Learn more about the Flexpipe system and its applications with Continous improvement, Kaizen Blitz, Lean Six Sigma, 5S and more.
How Ekanbans Optimize Your Material Replenishment Process
When companies think about Kanban, the image of a Kanban board and Kanban cue cards often come to mind. This simple lean manufacturing scheduling system summarizes workflow on a board, showing individual steps required to complete a given project, work, or operation.
The Kanban board is the repository for the Kanban cards. The board outlines a given manufacturing process or defines each stage of a product or project’s step-by-step process. The cards are then placed on the board outlining what tasks need completion.
Aerospace producibility board – Source: planview.com
Cards define what work has been requested, what is currently being worked on, and what work is completed. They represent what remains to be done before moving to the next process step. These cards are also used to outline different ideas and approaches to help move the process along.
The Origins of Kanban
In its simplest form, Kanban is a method of tracking manufacturing workflow or a project’s history. It is a highly effective scheduling method for lean manufacturing, helping to define how much inventory is needed to support current workloads.
Its origins can be traced back to Taiichi Ohno, who – along with Sakichi Toyoda and his son Kiichiro Toyoda – are responsible for developing the Toyota Production System (TPS) and its many lean and continuous improvement methodologies.
Toyota Production System Kanban board. Source: toyota-global.com
Like many lean methodologies emerging from Toyota, Kanban relies upon simple visual cues. The word Kanban is Japanese and literally translates to “card you can see.” It is considered the core tool for managing Just-in-Time (JIT) manufacturing, another lean pillar of TPS. Toyota introduced JIT and Kanban during the 1940s.
JIT is considered a pull system where customer demand is the driving force behind manufacturing. This customer demand essentially “pulls” products to be made, unlike the North American manufacturing processes at that time that relied on pushing products to the market to spur customers to buy those products.
Kanban is seen as an innovation in that it follows similar TPS guidelines; minimizing costs, eliminating waste, and shortening lead times is the best way to add value for customers.
Kanban in Today’s Business Environment
Companies still use Kanban boards and even post-it notes as a convenient replacement for the Kanban cards. Other companies have moved away from this manual process. They have instead adopted digital, SaaS, cloud-based, and mobile-optimized software solutions that provide granular data and up-to-the-instant feedback on workflow and production volumes.
This adoption of real-time platforms has given rise to multiple Ekanban (electronic Kanban) systems that are quickly replacing the visual cue systems of the past. These systems provide invaluable details to line-side operators, managers, project managers, employees, and technicians in manufacturing environments.
Having a system that tracks production data and a project’s progress in real-time is invaluable. It shortens the time it takes to make critical decisions and course corrections. It identifies areas of concern and provides pinpoint accuracy on issues that impact workflow. It allows companies to determine when inventory needs replenishment to keep up with demand.
Ekanban systems can be accessed from any laptop, mobile phone, or desktop with an internet or Wifi connection. This means designated employees can easily track production throughput no matter where or when they work. Employees no longer have to view the Kanban board to get a breakdown of production throughput, and nobody has to spend any time updating that board. Instead, everyone merely accesses the information on their own.
Simple, Scalable, and Modular EKanban Systems
One of the drawbacks for manufacturers is the cost of fully implementing an Ekanban system alongside its existing software, like Enterprise Resource Planning (ERP), Material Requirements Planning (MPR), and other production or inventory management systems. However, like Flexpipe’s tube and joint system, there are modular and scalable solutions that allow you to gradually introduce EKanban without breaking the bank.
Steute Technology’s NEXY Digital Shop Floor Solution is one of these modular and scalable systems. Rob Hargis of Steute USA outlines some simple ways the company’s Ekanban system works.
Watch Ian Johnson from Flexpipe and Rob Hargis of Steute USA outlining some simple ways the NEXY Digital Shop Floor Ekanban’s system is working.
1. What is the NEXY Digital Shop Floor Solution?
Simply put, NEXY is an industrial wireless solution that streamlines the inventory replenishment process by leveraging Steute Technology’s wireless sensor technology.
NEXY’s flow rack sensor is a robust, sturdy, and easy-to-install device that fits easily on any Flexpipe Flow Rack. It operates at 915 MHz, so it doesn’t interfere with other WiFi signals. This is especially important given the number of Wifi sources on today’s production floors.
The flow rack sensor easily snaps in pace on any roller and does away with operators using barcode/RFI scanners to register inventory at a given work cell.
2. What are the Main Benefits?
One common source of waste in manufacturing includes inventory replenishment. In a lean manufacturing work cell, this often involves an operator leaving the cell, walking to inventory, waiting to get the parts, consumables, or materials they need, and then walking back to their work cell. This is all wasted time.
The further the inventory is away from the lean cell, the longer the transit times and the more time is wasted. Some companies ignore this wasted time. However, calculating how often a given work cell needs replenishment each day, week, or month and how many cells are on the shop floor quickly amounts to a considerable amount of motion waste and non-value tasks.
Water Spider is the go-to person who can make the bridge between the lean cell and the supermarket.
In other instances, operators must go outside the cell to register the inventory with an RFID/barcode scanner. Again, depending on how often the replenishment occurs, this time quickly adds up. For cells with high inventory replenishment throughout the day, this wastes time and ultimately affects production throughput for a single cell.
Even companies that still use the manual Kanban processes on a Kanban board with Kanban cards can save considerable time and achieve significant cost reductions with NEXY. Operators can stay in the cell and focus on completing work tasks while NEXY operates behind the scenes.
No more time filling out Kanban cards or updating Kanban boards. No need for RFID/barcode scanners. No need to leave the work cell to replenish inventory. No more long transit times walking to and from inventory/stores.
No RFID/barcode scanners
No time wasted on inventory replenishment
No Wifi interference
No Noise (low sound always)
No more manual Kanban cards and Kanban Boards
“Everything is done behind the scenes. All the operator or employee has to do is focus on their work. They will never notice when inventory is replaced.”
3. Where is the Data Stored?
Once actuated, the flow rack sensor immediately sends wireless signals to Steute Technology’s access point. From there, the access point sends the data to the sensor bridge – a Programmable Logic Controller (PLC) housed in a cabinet on the shop floor.
The PLC then takes all the data and creates an Application Programming Interface (API), which can either be sent to a shop floor server or a cloud-based server. The wireless solution is 128-bit encrypted and works with multiple IT cyber-security protocols.
Wireless tilting sensor RF RW-NET
sWave.NET® wireless technology
eKanban software module
4. How Easy is it to get Started?
The simplicity of NEXY is that companies alone decide how much to buy and when. The system isn’t dependent upon immediate adoption across a company’s shop floor. Companies can start small, learn, improve, and then progress at their own pace adding new flow rack sensors and increasing scalability when they see fit.
“Getting up and running is easy. Customers who buy Flexpipe Flow Racks simply reach out to Flexpipe, and we’ll get involved… We start with a simple consultation to determine their needs and current process and then discuss their goals. After that, it’s simply a matter of doing what the customer asks.”
A Simple Solution to Ease Into Manufacturing 4.0
Nowadays, every manufacturer has heard of “manufacturing 4.0” or “industry 4.0.” Both are the same thing. They simply refer to The Fourth Industrial Revolution, the adoption of automated technologies, and their synchronization with digital data solutions and networks.
The first industrial revolution used water and steam to power machines and equipment. The second included improved communication with the telegraph and the installation of railway lines to transport materials and products. The third occurred during the 1950s with the early adoption of digital solutions that improved communication.
The fourth is simply a natural progression from the third; improved digital solutions linked to automated and robotic equipment ensure a steady stream of real-time data.
NEXY is the simplest way for a manufacturer to be introduced to this all-important fourth industrial revolution. This is especially the case for labor-intensive manufacturers who want to manage their transition at their own pace.
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Rob Hargis is a seasoned Brand Manager with the NEXY division of Steute Technologies, providing wireless eKanban, Andon, and AGV integrated sensor networks for manufacturing, assembly and industrial workflow processes in automotive, white goods, and other complex-assembly environments.
Modular, Scalable, and Affordable Material Handling with Flexpipe
Flexpipe is an innovator, supplier, and designer of modular and scalable steel tubes and joints that help companies reduce material handling costs. Based out of Montreal, the company provides multiple products, training, and insight to companies wanting to adopt lean manufacturing.
The company offers a full-service solution that includes its free software add-on SketchUp, multiple outlines and assembly designs, and design and cutting services to help companies build their own material handling structures and reduce costs.
If you would like to see how Flexpipe can help, contact us now.
5S Guide - A lean manufacturing tool
5S, a continuous improvement methodology widely recognized as a building block of lean manufacturing. 5S spearheaded the rise of just-in-time (JIT), a supply chain management and lean manufacturing process that minimizes waste while maximizing efficiencies.
Kaizen Event: Everything You Need to Know to Get Started
When manufacturers need to improve efficiencies, reduce costs, shorten lead times, and eliminate waste, they turn to the well-established continuous improvement methodology known as Kaizen. The word is Japanese for improvement, yet this one word means so much to those who adopt its principles. So, how does Kaizen work, its methodologies, and how does this relatively simple process eliminate waste and turn losses into profits? Read on to find out.
The Culture of Kaizen
[caption id="attachment_43072" align="aligncenter" width="564"] Source: Wikipedia: The Japanese word kaizen means 'change for better' (from 改 kai - change, revision; and 善 zen - virtue, goodness) with the inherent meaning of either 'continuous' or 'philosophy' in Japanese dictionaries and in everyday use.[/caption]
Kaizen is a mindset as much as it is a methodology. For Kaizen to truly succeed, a company’s entire workforce must be indoctrinated into its guiding principles. It is not part of a company’s culture; it is the culture. Managers, supervisors, office workers, and production employees must fully adopt Kaizen. The goal of kaizen is to eliminate every single form of waste. That waste can include overproduction, product defects, wasted movements, repetitive tasks, unnecessary approvals, redundant processes, machine downtime, excessive inventory, and idle time – to name a few.
[caption id="attachment_43076" align="alignnone" width="1920"] When employees or operators are in “waiting” mode, it represents a significant waste of time and does not bring any added value to the customer.[/caption]
Anything that inhibits, interrupts, delays, or stalls the natural flow of work is waste, and everyone’s responsibility – from managers to supervisors to shop floor employees – is to identify and eliminate that waste. Proper training is critical. A Kaizen workforce is one where all employees are involved in the continuous improvement process. Everyone is making suggestions and offering solutions. Everyone is doing what they can to eliminate waste, and everyone has a role in improving how work is performed.
The Kaizen Concept, Its Origin, and Foundations
Kaizen is an amalgamation of several different business concepts. No one person can lay claim to coming up with Kaizen. Kaizen is a mixture of statistical process control (SPC), statistical quality control (SQC), procedure optimization, and repeatability.
The Shewhart Cycle
[caption id="attachment_43084" align="alignnone" width="278"] Source: Wikipedia - Walter Andrew Shewhart was an American physicist, engineer and statistician, sometimes known as the father of statistical quality control and also related to the Shewhart cycle. [/caption]
While most immediately associate Kaizen with the Toyota Production System (TPS), its origins start with Walter Shewhart, an American engineer, physicist, statistician, and businessman who worked for Bell Labs during the 1930s. Shewhart ushered in the age of statistical process control. He believed that waste could only be eliminated after a process was controlled.
The Shewhart Cycle – commonly referred to as the PDCA Cycle – is a straightforward process widely viewed as Kaizen’s ancestor. PDCA stands for Plan, Do, Check and Act. Relatively simple, right? You plan something. You then enact the plan. You check the plan’s results and then act to make the plan better. This simple cause-effect methodology earned Shewhart the moniker of the “father of statistical quality control.”
Japan After the Second World War
Edward Deming was an American management consultant, engineer, professor, and statistician. Deming borrowed concepts from Shewhart and expanded upon them. For a while, the two worked together. Deming saw the PDCA Cycle/Shewhart Cycle as critical to creating better quality systems. He was instrumental in these concepts being adopted by the Japanese after the second world war. Deming’s teachings were better received by Japanese companies than by American companies. The United States had built a substantial industrial complex to support the war effort. Once the war ended, the US economy took off. With their large production floor layouts and installed equipment base, American businesses emphasized high production runs and high inventory counts.
[caption id="attachment_43093" align="alignnone" width="375"] Source: Wikipedia - William Edwards Deming (October 14, 1900 – December 20, 1993) was an American engineer, statistician, professor, author, lecturer, and management consultant. Educated initially as an electrical engineer and later specializing in mathematical physics, he helped develop the sampling techniques still used by the U.S. Department of the Census and the Bureau of Labor Statistics. He is also known as the father of the quality movement and was hugely influential in post-WWII Japan. He is most well-known for his theories of management.[/caption]
American businesses had little need for Deming’s lean philosophy. The Japanese, on the other hand, were rebuilding both their country and their industries. Japanese companies needed to focus on eliminating waste, minimal inventory counts, lean processes, simple concepts, and cost reduction.
The Introduction of Kaizen to Western Industries
One Japanese engineer who took Deming’s principles to the next level was Taiichi Ohno, who eventually developed the Toyota Production System (TPS) alongside Sakichi Toyoda and his son Kiichiro Toyoda. The TPS system was improved throughout the 1950s, 1960s, and 1970s.
[caption id="attachment_43097" align="alignnone" width="1920"] Source : Market Business News - Toyota's origins bring us back to these two men: Sakichi Toyoda (left) and his son Kiichiro Toyoda.[/caption]
Eventually, Masaaki Imai – a Japanese management consultant who studied TPS – introduced Kaizen to western businesses in 1985 when he wrote “Kaizen: The key to Japan's Competitive Success.” He would eventually establish the Kaizen Institute and use it to propagate the Kaizen message and teachings worldwide.
In the end, Kaizen became prominent because of Shewhart’s PDCA Cycle, Deming’s push for hands-on production employees, and Ohno’s TPS system. So, how does Kaizen work?
There are four types of Kaizen methodologies. These include Kaizen Teian, Kaizen Events, Kaikaku, and Kakushin. Each one is explained in detail below.
1. Kaizen Teian
Kaizen Teian refers to the daily improvements that every employee is responsible for. Every employee must always be trying to improve their work processes and workflow. More importantly, every day, all employees – including supervisors and managers – should be focused on eliminating the following eight forms of waste as defined by Kaizen.
Waiting: This includes any workers waiting to complete their work. It can be caused by a lack of material or semi-finished parts to work on, idle machines, or anything that causes a worker not to work.
Defects: This includes any defects in raw materials, work-in-process (WIP) parts, or finished goods. The entire process improves when each employee is constantly looking to catch defects.
Overproduction: This includes any lean work cell or machine that produces more than required.
Inventory: Holding excessive inventory counts leads to high financing costs, inventory damage, pilferage, and obsolescence.
Transport: A poorly designed production layout leads to long transport times of materials, WIP, and finished goods.
Excessive Motion: This includes employees who must perform redundant and unnecessary movements during work. Excessive movements make cycles times longer and affect throughput.
Misused Talent: This includes any employee who is not being used to their fullest. It can be an employee with a needed skillset that cannot use that skillset and expertise.
Overprocessing: Redundant and repetitive work processes and approvals lead to wasted time and bottlenecks.
2. Kaizen Events
While Kaizen Teian refers to the daily responsibilities of all employees, a Kaizen Event is a scheduled period where a specific work process or task is identified as needing improvement. Kaizen events are focused events where management, supervisors, and front-line employees work to improve a predetermined problem. Ultimately, Kaizen events involve more pre-planning, whereas Kaizen Teian is more about all employees’ daily responsibilities for improving workflow.
Kaikaku is complementary to Kaizen. When thinking of Kaikaku, think of those instances where a company initiates a complete redesign of processes or procedures. This is an event where a company adopts an entirely different way of doing things. An example is replacing labor-intensive and time-consuming work processes with automated processes like automated equipment and machinery. This move involves in-depth analysis and a willingness to ensure that all work cells can keep up with the increased throughput.
When thinking of Kakushin, think about a technology breakthrough that completely changes how work is performed. A Kakushin event is an about-face and complete change. It can best be described as the ultimate brainstorming session where a company charts a path toward a new culture and way of doing work. An example includes a plastic injection molding company modifying equipment to perform thixomolding magnesium alloys. It can consist of a company adopting additive printing or metal-injection molding (MIM) technology.
What You Need to be Ready and Best Practices
You can’t adopt a half-hearted attempt at Kaizen. It can’t be a flavor-of-the-month strategy. Adopting Kaizen requires a top-down and bottom-up mindset where the entire organization is committed to enacting Kaizen principles. So, what type of mindset and approach does your company need to make Kaizen a success?
Willingness to Adopt Continuous Improvement:
The entire purpose of Kaizen is continuous improvement. It’s not a one-time event. It’s not just something a company does monthly or quarterly. This is a 24/7 mindset that must be indoctrinated from the highest manager down to the front-line employee. The most significant difference between how North American companies view Kaizen compared to Japanese companies is the idea that Kaizen is a single event for American companies. This is entirely wrong. These companies plan a “Kaizen” event every quarter instead of fully adopting Kaizen every second, minute, and hour of the day.
Satisfied and Engaged Workforce:
Your employees must be motivated to change. This means they must be satisfied and buy into the Kaizen mindset. If your workforce isn’t motivated to improve things, then Kaizen is far less likely to improve.
Total Commitment to Kaizen Principles:
Again, Kaizen requires a company-wide, top-down, and bottom-up commitment to its principles. However, to succeed and become part of a company’s culture, the very top of an organization must push its principles downwards. Once that happens, the entire organization will fully adopt the Kaizen continuous improvement methodology.
Company-Wide Teamwork is Critical:
Companies must eliminate tribalism and silos. This continuous methodology can only work when teamwork is part of every employee’s mindset. An environment where departments or employees blame each other for lack of progress will never work. The mindset must always be focused on problem-solving. Fostering an environment where teamwork thrives is essential to making Kaizen work.
How to Sell Kaizen to Upper Management
C-level executives and management rarely make decisions based solely on assumptions. Guesswork is not something they adopt or embrace. They make decisions based on irrefutable facts, numbers, and scrutinized data. Selling Kaizen/lean principles to senior management is ultimately about providing them with that all-important data. It’s about giving them the numbers and evidence they need to pursue Kaizen. For this to succeed involves adopting the three-step process outlined below.
This three-step process involves defining the current waste as it exists right now. You can do this on a small scale with a single manufacturing work cell or workstation. The best way to do that is to demonstrate to senior management how the current causes of waste lower cycle times and production throughput. After this, you should clearly define the causes of waste and how it impacts cycle times.
The second step involves eliminating that waste. Once that’s done, your cycle times and production throughput should improve. This is the evidence you’ll need to provide to senior management. It’s the data that shows how eliminating waste increases throughput.
The third and final step is showing management the benefit of adopting these principles across the shop floor at every work cell. To learn more about gathering the data, you need to convince senior management to pursue Kaizen/Lean principles; read: How to Sell Continuous Improvement to Senior Management.
The goal of this approach is to set yourself up for success. Management makes decisions based on data. As a manufacturer, this means how much the company would improve – or produce more – if they adopted Kaizen. For other companies like distributors, it’s about showing how excess inventory erodes profit.
If you must sell a concept to upper management, focus your argument around solving a problem that matters most to them. Then, position yourself to succeed by showing how adopting Kaizen can eliminate or reduce the impact of that problem.
Tips and Tricks
There are a couple of tips and tricks you can adopt as you start your journey toward a fully-adopted Kaizen culture. These are outlined below.
Identify Motivated Employees: If you find yourself in a situation where not all employees are sold on the concept of Kaizen, then focus on those who are. Remember, adopting Kaizen can sometimes be a long and arduous process. Not everyone may be willing or ready to accept change. In most instances, a company’s workforce is resistant to change.
Start with Incremental Improvements: As the saying goes, Rome was not built in a day. Don’t assume that you’ll instantly change everyone’s mind. It does take a while for this continuous improvement methodology to take hold. When you first start to implement Kaizen, start by propagating simple and small successes. This will help get the ball rolling and show how simple improvements can have a significant impact.
Reward Employees: A continuous improvement mindset requires constant reinforcement. Acknowledge and reward employees who go the extra mile. Celebrate minor improvements and make sure all employees are recognized for their efforts. This will help empower those employees to make more improvements. It’s ultimately about building momentum and making change less confrontational and threatening. Once employees see how important it is to improve things and how it benefits them, they’ll be more inclined to pursue new improvements.
Document Everything: How companies capture their improvements is what makes Kaizen work. This means properly documenting and tracking each improvement. Remember, the goal is to improve processes and eliminate waste. You’ll be redefining how work is done and the processes that must be followed. This means documenting those changes and using simple step-by-step descriptions alongside images to convey how the new work process should be followed.
Examples of Successful Kaizen Events
You’ll never be wanting in terms of things to improve through Kaizen. Here are some examples of simple Kaizen improvements that provide stable returns. Lower Inventory Costs: You can reduce your inventory financing costs while eliminating the high costs of inventory obsolescence and damage. Isolating excess inventory on raw materials and spare parts will also help you maximize the square footage of your warehouse. Reduce Transit Times: Moving parts, materials, and WIP from one location or cell to the next takes time. Poor spacing and long distances increase that time and are, therefore, a waste. Minimizing the transit times to move WIP and materials is a simple way to reduce waste and increase throughput. This simple process creates continuous flow with minimal waste. Detailed Processes with Images: Employees need well-defined processes. In manufacturing environments, that means using high-quality images demonstrating the correct way to follow a given work process. Use images for each step of the process and always ask for feedback from employees on how it can be improved. Again, Kaizen is a 24/7 improvement process. Employees should constantly be looking to improve everything – as best defined by Kaizen Teian.
[caption id="attachment_36608" align="alignnone" width="1080"] The strength of the cart was increased by adding a second tube near the wheels.[/caption]
Improved Work Cell Layout: Simple changes like making it easier for operators to reach material without overexerting themselves lead to considerable savings in time while reducing absenteeism due to injury. Most motion improvements are made within the work cell, where employees must immediately access tools, materials, and WIP. Ergonomics: Making the workplace safer helps to reduce the incidence of worker injury. It also demonstrates an investment on the company’s part toward protecting its employees. This is the best way to show employees that you consider them your most important asset. This can include simplifying movements in work cells, using ergonomic and anti-fatigue matting, and establishing proper lifting procedures for employees.
[caption id="attachment_43145" align="alignnone" width="1920"] Building an ergonomic workstation reduces absenteeism and unnecessary movements.[/caption]
Flexpipe Inc: Making Kaizen Adoption a Much Simpler Process
Flexpipe Inc. is a Montreal-based designer, manufacturer, and integrator of a tube and joint system whose history goes back to the Toyota Production System. The company’s cut-to-length-and-assemble system makes building any material handling or standing structure easy. The company fully embraces Kaizen as a guiding principle, which is demonstrated by every customer the company works with. The tube and joint system empowers companies to build whatever structure – and change that structure – at a fraction of the costs and time of more permanent welded structures. To learn more about how this simple solution works, contact us now. To see how customers have used this scalable and modular system to reduce costs and eliminate waste, please go to Flexpipe Case Studies.
Using Flexpipe for Lean Manufacturing CabinetMakers
Implementing lean is a journey in itself. No company goes from 0 to 60 in record time when implementing lean principles. They learn, get better, learn some more and then improve some more. Each step of that journey is made easier when senior management is entirely on board and, in some cases, driving the lean journey.
ADOPTING LEAN MANUFACTURING
Regardless of your industry, some employees may be reluctant to change, while others may embrace it. For those who resist change, it’s often a question of personal comfort; we’ve always done it this way, so why change? However, with consistent training, constant feedback, daily upgrades, and commitment, you will achieve significant lean improvements using Flexpipe.
Flexpipe is a tool, but the employees drive the improvements
Here are just a few examples of lean improvements using Flexpipe products.
Source: MetCabinet About Us
[caption id="attachment_40677" align="alignnone" width="1280"] Look and feel Lean with clear floor lines.[/caption]
INCREASE PRODUCTION FLOOR SPACE BY REDUCING OVER-PRODUCTION
Several cabinet makers using Flexpipe can decrease over-production while dramatically reducing the square footage of their shop floor. This reduction in floor space saves the company money while making it easier to manage materials, quarantine defective products, collect scrap or refuse, and move semi-finished and finished goods between lean work cells.
We often come across Cabinet makers who have fully adopted batch production. Trying to make different types of products simultaneously, along with redundant work processes and poor material flow, often leads to WIP cabinets, drawers, trims, and sides strewn about the shop floor. We see this quite often. The solution to this issue is provided below
Learn about one-piece flow and how it could be put in place.
Make sure management and owners are on board with the new one-piece flow philosophy.
Be ready and open-minded to adjusting work tasks, departments, and different production and assembly activities.
[caption id="attachment_40681" align="alignnone" width="1280"] The Flexpipe cart holds a day’s worth of nailer boards for final cabinet assembly. Vertical bins for longer parts where different parts are clearly separated and labeled to save time as opposed to searching around aimlessly (nonvalue added). A measurement label is placed alongside the Flexpipe structure to quickly identify and measure parts (visual management).[/caption]
[caption id="attachment_40685" align="alignnone" width="1280"] Color-coded structures help operators and technicians immediately determine the urgency of customer orders. The blue drawer carts are for orders with standard lead times, while the red carts are for urgent or rush orders (visual management). All parts are labeled on the pipes with AL-TAG2 and a non-marking marker is put on the cart for identification.[/caption]
[caption id="attachment_40824" align="alignnone" width="1280"] Flexpipe modified 5S Takt board complete with work order instructions, layouts, and plans.[/caption]
This Flexpipe cart in the finishing department is used for cabinet frames, end panels, backs, shelves, etc. Each subcomponent and material is neatly placed in its appropriate slot, making it easy for operators to access a given piece when needed.
OPTIMIZE MACHINE UTILIZATION WITH EFFICIENT CHANGEOVERS
Companies invest a lot of money in automating their machinery and equipment. Unfortunately, these same companies often ignore the lean structures and material handling solutions critical to maintaining running equipment. They simply don’t invest enough time, energy, or money to ensure that their material handling structures are optimized.
Even the newest automation falls short if the structures around them aren’t properly organized. Not convinced? Take some time to investigate and measure your cutting machine’s productivity and efficiency. You’re likely to find there is far more downtime than you expected. Very often this is due to inefficient changeovers.
Review your loading and unloading procedures. Focus on ergonomics so that operators have easy access to tools and work instructions and never have to wait for one-at-a-time forklift deliveries of raw materials.
Have the next job (complete with material and work orders) ready well in advance to reduce waiting time.
Try to put as much as possible every day on casters to give you flexibility and reduce waiting time.
[caption id="attachment_40739" align="alignnone" width="1280"] Tape storage placed within the work cell allows for immediate replacement of consumables.[/caption]
A Flexpipe cart on the Homag Edgebander machine at Superior Cabinet. It applies matching edge tape of various colors to the sides of the melamine to match the finish on the top and bottom.Source: Superior Cabinet.
[caption id="attachment_40751" align="alignnone" width="1280"] Load or unload materials with a pallet stand on wheels to avoid waiting for a jigger or forklift (non-value added).[/caption]
[caption id="attachment_40755" align="alignnone" width="1280"] Flexpipe Manual cutting table with a 5S shadow board.[/caption]
USING WORKER CREATIVITY TO BUILD A LEAN CULTURE
You will never sustain a lean culture if you don’t engage, train, and spend on your employees. The woodworking industry has so many talented, hard-working, resourceful, and creative people. Unfortunately, there are often underutilized. This unused worker creativity is by far the biggest waste in the industry.
Several companies have highly-skilled and experienced employees who have decades of experience. While experience is important, it can sometimes lead to an unwillingness to adopt change. Again, the mindset becomes, “Why change anything when it has been working for 25 years?’’. Here are some guidelines to make sure all employees are speaking the same language.
Train workers, so they can name and spot the 8 most common causes of waste.
Get employees into a routine by holding a daily meeting where the agenda covers the previous day’s improvements and any KPI.
Engage workers and make them take part in small Kaizen events. This is a great opportunity to test out ideas, modify structures and learn from mistakes.
[caption id="attachment_40764" align="alignnone" width="1280"] Customized Flexpipe cart with multiple slots for easy access to materials.[/caption]
Rack design by Michael Kachur – Continuous Improvement Manager and certified Lean Champion at Superior Cabinets in Saskatoon, Canada.
[caption id="attachment_40829" align="alignnone" width="1280"] Customized Flexpipe structure holding bins and securing semi-finished cabinet glass frames.[/caption]
ELIMINATE WASTED TIME BY INCREASING ASSEMBLY PRODUCTIVITY
Within the woodworking industry, it’s common to devote money and resources to storage, trimming or cutting departments while the packaging department is left with too few resources or focus.
Assembly is a labor-intensive activity where small incremental changes can have a large impact. Most importantly, these changes don’t involve changing the layout of the shop floor.
Creating a custom-made lean work cell or workstation reduces unnecessary movement and excessive walking. When lean work cells are positioned near one another, it reduces transit time for work-in-process parts. 5S and ergonomics are critical requirements for these new lean work cells.
Get employee feedback on what they waste time on. It can be missing tools, instructions or having to walk long distances to move parts or get material.
Celebrate your accomplishments and improvements. Congratulate your employees and be proud of what you’ve accomplished.
Make these small Kaizen events a frequent occurrence.
Wood vs Flexpipe Tube and Joint System
Wood can still be used for cart surfaces or siding. However, your stations and carts should be made from Flexpipe – which is easy to adjust or modify. Flexpipe and wood are similar in price but Flexpipe is far more durable, versatile, and much stronger compared to wood. More importantly, it won’t rot or warp due to humidity and moisture.
[caption id="attachment_40768" align="alignnone" width="1280"] Wood carts can still be used for cart surfaces or siding but other structures should be designed with Flexpipe.[/caption]
Wood cart Feist Cabinets & Woodworks
ALUMINUM EXTRUSION VS FLEXPIPE TUBE AND JOINTS
You can save up to 50% with Flexpipe tubes and joints compared to aluminum material handling systems. Aluminum has the required precision for machines, equipment, and robotic integrations, but it’s far too costly for carts, racks, or workbenches. Another issue with aluminum is the tendency to have water stains over time. Flexpipe is easier for workers to use, far less expensive ($8 per 8 feet of pipe), is available in multiple colors, and will never stain.
STEEL VS FLEXPIPE TUBE AND JOINTS
Steel is a universal material with multiple applications. However, creating material handling equipment with steel requires welders and painters. Changing existing welded structures is even more costly and time-consuming.
With Flexpipe, there’s no need for welders or painters. There’s no need to spend an inordinate amount of time trying to modify an already welded structure. Anyone with a little creativity can cut or assemble pipe and joints in a fraction of the time and costs compared to welded structures.
You can quickly put in place improvements and change your Flexpipe structures every day as ideas and suggestions come forth. No need to scrap old, welded structures. No need to re-weld existing structures. The changes you make to a Flexpipe structure in the afternoon can have you up and running in the morning.
[caption id="attachment_40805" align="alignnone" width="1280"] Bare steel - exposed to the environment - will eventually corrode and rust. Flexpipe's products never corrode or rust and there is never any painting of a Flexpipe structure as the piping is available with multiple colors of plastic coating.[/caption]
SIMPLIFYING LEAN MANUFACTURING ADOPTION WITH FLEXPIPE'S MODULAR SYSTEM
Flexpipe is widely-recognized among North American manufacturers as a modular, scalable, easy-to-use, and inexpensive material handling solution. The company's free design extension for SketchUp allows manufacturers to custom-design and build their own tube and joint material handling structures. Customers rely upon Flexpipe's team for its design acumen, speed of response, and the company's cost-effective solutions.
If you would like to see how Flexpipe can help you adopt lean concepts while reducing your costs of material handling, then contact us now.
How to optimise material Flow with a Tugger Cart system?
When companies need to safely move loads, equipment, or machinery from one location to another, they often turn to tuggers. Some tuggers are simple hand-held carts or trolleys that allow operators and employees to drag, pull or tug raw materials, consumables, and finished goods. Other tuggers are heavy-industrial machines capable of pulling upwards of 100-plus metric tons.
How to Sell Continuous Improvement to Senior Management
Regardless of the company – or the industry – senior managers in manufacturing enterprises need to make decisions based on cold, hard, irrefutable facts. They need numbers. They need data. They need to ensure that their decision to move forward has a high probability of success.
Senior managers need this critical information to make a go/no-go decision on capital expenditures, hiring, expansion, machine and equipment repairs, or, more aptly, for pursuing continuous improvement projects.
Learn more about the three fundamental principles needed to convince senior managers to pursue continuous improvement initiatives and how Flexpipe structures are critical to that goal with insight from Leslie Pickering and Mark Zeilinger of Quadrant 5.
Pursuing Continuous Improvement Initiatives
In manufacturing environments, waste can take many forms. It can include work stoppages, human error, misaligned or out-of-tolerance parts, poorly assembled parts, machine downtime, redundant tasks, repetitive tasks, or any action or process that inhibits the natural flow of work.
Sometimes, reducing waste in manufacturing can be as simple as reducing the transit times to move work-in-process parts between cells. It could include revamping a workstation so that the assembly process is more seamless and the operator within the workstation has easier access to materials and tools.
Regardless of what approach is taken, these changes initially seem small. However, when repeated across all work cells, these small changes quickly add up until costs are reduced, quality is improved, and more finished goods are produced. Unfortunately, because these small steps seem so inconsequential, senior managers have difficulty viewing the benefits of adopting lean concepts.
As stated by Leslie, “Senior Managers are really good at developing global views – where they can see the end game or the end goal – but they often don’t take a sequential process to how those goals are achieved – what steps need to be taken sequentially to get there. Your job in continuous improvement is explaining the steps to achieve that goal.”
A Simple Three-Step Process
Ultimately, adopting continuous improvement initiatives can be summarized in three overriding steps. Leslie states, “1. This is what is currently happening. 2. This is what we’re trying to do, and 3. These will be the benefits of implementing lean.” So, does that mean you simply verbalize these issues to senior management, and they’ll quickly agree to pursue lean initiatives? No, it does not.
These three steps are merely guidelines. You must gather the hard facts that senior managers need to implement lean. Your goal includes gathering the data and defining the metrics that will help senior managers measure the return on investment (ROI) for enacting continuous improvement across the entire production floor.
Cycle Times and Throughput Volumes Are Key
All work operations or work tasks involved in making a product have a cycle time. Lowering cycle times means you’re manufacturing more products at a lower cost. The question senior managers want to be answered is whether the savings of implementing lean are higher than the cost of implementing lean.
In our example, we’re using a basic cycle diagram (below) showing the steps for manufacturing a product. Our basic cycle diagram defines each work process or manufacturing step involved in making a fictitious product.
For the sake of simplicity, we’ll assume that each of these “steps” represents a single work cell. Each cell has a specific cycle time for a given work operation –the time it takes an operator to complete a work task.
Each cell also has a throughput volume – that volume of semi-finished parts the cell completes before those parts move to the next chain in the process.
This exercise aims to gather data on how lean initiatives can 1) Lower cycle times, 2) Increase throughput, 3) Lower manufacturing costs, and 4) Shorten the lead time to get finished goods to customers.
At the end of the exercise, you’ll have the data you need to show senior management what was happening, what you changed and why, and how making similar changes across all cells will result in lower cycle times, increased throughput, and reduced costs – or to paraphrase Leslie “the benefits of implementing lean.”
Manufacturing / Cell Productivity Rate
While operators might be paid for an 8-hour shift, they do not work a total of 8 hours. You must account for two 15-minute breaks in the morning and afternoon and then lunch. In our example, we’ll assume it’s a one-hour lunch. That leaves 6.5 hours of actual available work time.
Now, nobody can work at 100% efficiency. People go to the bathroom, get called away, or are interrupted for valid reasons. We’ll assume that the operator works at 85% efficiency. This means that the work time is 5 hours and 35 minutes.
We’ll now use that 5 hours and 35 minutes when calculating the work cell’s throughput.
1.“This is What is Currently Happening.”
Every lean process has a beginning, and we’ll assume that beginning includes you focusing on an initial assessment of a single work cell. Start by assessing the cycle times for each work task in your chosen work cell.
Ensure the operator or employee of the cell understands that your goal is to help make their job easier.
Make them feel part of the process, and they will be more than willing to show you some of the issues they come across.
Ensure they understand that this exercise is not about timing them but capturing the causes of work stoppages.
Mark of Q5, “We’re always touching on the human element. How do you get people engaged? That’s where improvements happen. Nobody knows that piece of equipment or machinery better than the operator themselves. So, you really need their input. The approach is to create “an island of excellence,” something people can point to as an example. So, give people recognition – a pat on the back and make them feel part of the continuous improvement process.”
Work Cell #1
Unit of Measure
Cycle Time in Minutes converted to seconds
Set Up-Time Minutes
Conversion of Minutes to Seconds
Number of Work Operations
Conversion of Minutes to Seconds
Comments / Notes
Missing material (Operator had to search for material)
Missing assembly instruction
(Operator had to search for instructions)
Broken SawBlade / No replacement (Operator had to leave work cell and go to stores to get replacement blade)
No issues - clean work task
No issues - clean work task
Missing assembly instruction
(Operator had to search for instructions)
Missing tool (lack of tool placement caused delay)
No issues - clean work task
No issues - clean work task
Missing tool (lack of tool placement caused delay)
You’re going to create your own “island of excellence” by using these initial cycle times within the cell to show the issues the operator faces daily. You’ll also capture any reasons for delays or work stoppages.
In our example, the cycle times with no issues are done in five minutes or 300 seconds. We’ve converted it to seconds because even the smallest changes that save a couple of seconds can dramatically impact.
Now, the 5-minute cycle time may not be the optimized cycle time, but for this example, it’s the best cycle time this cell produces.
However, the average cycle time at the bottom is skewed by the operations (1,2,3,6,7, and 10) that encountered work stoppages. This means these work stoppages pushed the average cycle time to 9 minutes, 25 seconds, or 555 seconds.
There is no hard and fast rule about how many cycle times you should track. In our above example, we’ve tracked ten cycle times. We’ve converted those times from minutes to seconds to simplify how we calculate how much the work cell produces.
Deduct the 30-minute setup time from our manufacturing productivity rate of 5 hours and 35 minutes.
Take the remaining 5 hours and 5 minutes and convert them to seconds. This gives us 18,300 seconds of available work time.
Now, divide the 18,300 seconds by the cycle time in seconds, which is 555. This gives us a work cell throughput of 33 units.
The table below summarizes the data you’ve gathered from the work cell. Now, it’s more than likely that you already know what a given work cell produces. You may also know what the cycle times are. Plenty of MRP and ERP software solutions provide cycle time data.
However, no software can show you how to reduce the cycle times. It can only report them. It can only provide numbers. You need to see for yourself what causes work stoppages. Only then can you enact strategies to reduce those cycle times and increase throughput.
Average Cycle Time in Minutes
Average Cycle Time in Seconds
Total Number of Seconds (5 hours 5 minutes)
Work Cell Throughput
Work Cell #1
You now have data on a work cell that defines Leslie’s first statement: “This is what is currently happening.” You have a list of the most common delays encountered by the operator in the work cell. You know the causes of higher cycle times and can enact strategies to eliminate those causes.
2.“This Is What We’re Trying to do.”
One of your changes included making a modular and scalable Flexpipe tool storage rack. You then placed this rack immediately outside the work cell, so the operator no longer has to walk to inventory to get replacement saw blades.
Another change included making a Flexpipe workstation where all tools and consumables are easily located. You combined this new workstation with a modular flow rack so that replacement consumables and materials are always readily available.
Finally, you’ve created a modular Flexpipe work center where the operator can easily access assembly instructions.
Storage Rack: Machine Parts (Blades)
Modular Flow Rack
Modular Work Center with instructions
After making these changes, you revisit the work cell and take a new set of cycle times.
While there are still operations that encounter some delays, the overall benefit is that you have achieved more operations that meet the desired cycle time.
Work Cell #1
Unit of Measure
Cycle Time in Minutes converted to seconds
Set Up-Time Minutes
Conversion of Minutes to Seconds
Number of Work Operations
Conversion of Minutes to Seconds
Comments / Notes
No issues - clean work task
Misaligned part - small adjustment
No issues - clean work task
No issues - clean work task
No issues - clean work task
Replacement Tool needed - easily found - small delay
Replacement Tool needed - easily found - small delay
No issues - clean work task
No issues - clean work task
Broken Saw Blade - Replacement blade in material flow rack immediately outside work cell minimized replacement time.
A new workstation made locating replacement tools easier for the operator.
Placing a storage rack for replacement saw blades immediately cut down on the time the operator took to replace the blade.
Instead of a 25-minute cycle time or “delay,” the operator merely located the replacement blade and made a change that only took 14 minutes.
Ultimately, your average cycle time was lowered to 6 minutes and 57 seconds.
The lower cycle times mean the work cell increased its throughput by 41%, from 33 to 46 units.
Average Cycle Time in Minutes
Average Cycle Time in Seconds
Total Number of Seconds (5 hours 5 minutes)
Work Cell Throughput
Work Cell #1
3.“These Will be the Benefits of Implementing Lean.”
Increasing throughput in a work cell accomplishes nothing if the remaining work cells don’t make similar continuous improvement changes. All you’re doing is creating a backlog for the next cell in the process.
You’ve increased the cell’s throughput, but without making similar changes to the remaining work cells, it’s all for naught. At this point, you’ve gathered enough data to show how making small incremental changes can have a dramatic impact on a work cell’s throughput.
Senior managers often have little choice but to move forward on additional continuous improvement initiatives when presented with this data. It’s now very easy for them to see how repeating the process will lead to significant improvements and savings.
The costs of a Flexpipe structure include the cost of the materials and the time it takes your operators to assemble structures. That initial cost is minimal when compared to the constant returns of pursuing lean principles. The benefits of lean are forever.
As stated by Mark, “That’s what we love about Flexpipe. It’s really easy just to try something. There’s no downside whatsoever. Cut a pipe too short, and we’ll just use it elsewhere.”
Ultimately, the company would achieve the following benefits if you pursued similar continuous improvement initiatives with the remaining cells.
Increased Manufacturing Throughput: More parts are produced in a day, week, or month.
Reduced Costs: The company achieves lower manufacturing costs by increasing the number of finished parts produced within an 8-hour shift.
Shorter Lead Times: Reducing cycle times and increasing cell throughput means you’ve reduced the time it takes to provide finished goods to customers.
Improved Machine Utilization: There is nothing more costly for manufacturers than having idle machinery. In the example above, having consumables and spare parts for machinery immediately outside the work cell helped to reduce the time the machine was sitting idle.
Better Ergonomics and Safety: Poorly constructed work cells often include hazards that lead to human error and injuries. Worker injuries and absenteeism cost manufacturers $1,100.00 per day per worker. Take the number of missed days due to injury over a given year and use that amount as further justification for pursuing continuous improvement initiatives.
Cost-Effective Flexpipe Material Handling Solutions
Flexpipe is a Montreal-based supplier, designer, and integrator of modular, scalable tube and joint systems for material handling. The company’s customer-centric focus and proactive approach empower manufacturers to make their structures at a fraction of the cost compared to fixed material handling systems.
The company’s free design extension for SketchUp is easy to use and provides a complete assembly drawing, material cost breakdown, and bill of materials.
If you would like to see how Flexpipe can help on your next continuous improvement project, contact us now.
About our Lean expert - Leslie Pickering
Mr. Pickering holds a degree in Mechanical and Production Engineering. He brings 35 years of experience in international process improvement, manufacturing, and operations. He is a recognized Toyota Production System specialist and is highly regarded as a Subject Matter Expert in the areas of Lean Manufacturing.
About our Lean expert - Mark Zeilinger
Mr. Zeilinger holds a degree in Mechanical Engineering. He brings over 30 years of experience in manufacturing and operations. Mr. Zeilinger is a recognized Toyota Production System Specialist, who has implemented successful transformation methodologies across a wide variety of industries, including Packaging, Electronics, Construction, Plastics, Food, Automotive, and Aerospace.
Critical Steps to Choosing Material Handling Systems
Different types of material handling solutions, equipment, and machinery are used within supply chains to move, store, protect, control, and handle materials. The goal is to ensure that materials are readily available and that parts and finished goods are properly protected during transit to and from warehouses. Material handling is a critical component for manufacturers, warehousing, wholesalers/distributors, resellers, and retailers.
What is a Material Handling System?
A material handling system includes any equipment, vehicle, standing structure, storage unit, rack, or trolley involved in storing, transporting, and protecting materials, consumables, and finished goods. For manufacturers, a material handling system should be designed with short-range movements in mind. This means that production employees should be able to easily access and move raw materials, consumables, and work-in-process parts.
Why Is Material Handling Important?
Material handling is a critical component of protecting against damage to parts, raw materials, and consumables. This not only saves companies money but also improves final product quality by reducing defects. Material handling solutions should be part of a larger company-wide program to improve a company’s storage and handling practices. Only a proactive storage and handling process can protect against unforeseen and costly part damage.
Material Handling Systems Across a Supply Chain
Material handling solutions should simplify employee access to materials and parts so that the speed of work increases. Ideally, these systems should also be easy to modify and scalable to keep up with changing requirements. Across a given supply chain, material handling solutions are heavily relied upon as a means of meeting delivery requirements with minimal product defects.
1 . Production and Manufacturing
Material handling systems found in manufacturing include carts, flow racks, racks, tuggers, shelving, workbenches, workstations, boards, and other storage solutions. Each of these systems plays a critical role in supporting production employees by supplying them with the necessary tools, instruments, parts, instructions, and consumables to complete work orders.
2. Packaging and Transportation
Manufacturers typically ship their industrial finished goods on strapped pallets of corrugated cardboard containers. Corrugated containers and customized packaging are often used as a means of protecting materials from damage during transportation. They are also the most cost-effective way of transporting industrial finished goods. Strapped corrugated pallets help keep raw materials, consumables, and parts safe during transit.
3. Storage and Warehousing
The most common types of warehouse material handling systems include forklifts, lift trucks, hoisting equipment, shelving, pallets, pallet jacks, automated guided vehicles (AVG), and even robotic handling systems. Forklifts are the all-important vehicle in warehouse management. These are heavily relied upon to move corrugated and strapped pallets, while lift trucks can position pallets on high vertical shelves.
4. Wholesalers and Distributors
Wholesalers, distributors, and bulk resellers rely upon a combination of material handling solutions. Distributors typically use forklifts, lift trucks, and hoisting equipment to handle and store shipments. These are then broken down into smaller shipments which are then sent out to retailers. The focus is to minimize costs so incoming bulk shipments are often used as a means of lowering per-unit freight costs.
Large retailers with large warehouses typically rely upon forklifts and lift trucks in addition to large shelving and storage units as a means of controlling finished goods. Smaller retailers may simply require pallet jacks, commercial hand trucks, warehouse stock carts, or small utility carts.
Problems with a Fixed Structure Material Handling System
Most portions of the supply chain don’t necessarily require customized modular material handling systems. There are instances where wholesalers, distributors, and large retail chains benefit from modular shelving and storage systems. However, manufacturers and fabricators are more heavily reliant on modular material handling systems if they want to adopt lean manufacturing, improve efficiencies, and control costs.
Unfortunately, for manufacturers, there are several inherent problems associated with a fixed material handling system like utility carts, trolleys, stock carts, or fixed shelving structures. The first issue relates to how several of these material handling solutions have welded joints or are designed and pre-manufactured to specific dimensions.
[caption id="attachment_36625" align="alignnone" width="1080"] This too heavy cart with inadequate wheels was a real source of problem for the team in addition to being a danger to their safety.[/caption]
Making any kind of adjustment to their dimensions or structure is both labor-intensive and time-consuming. This means spending a considerable amount of time having maintenance make changes. These changes often involve cutting, machining, and welding. For companies without these in-house capabilities, it means sending these structures out to third-party subcontractors.
Not only are third-party subcontractors expensive, but they can have drastic consequences on a company’s production throughput. It’s not uncommon for subcontracting to add weeks or even months for modifications to fixed structure material handling systems.
Second, as part of any continuous improvement plan, it’s common for companies to change their warehouse or shop floor layout. They may do this to reduce transit times between workstations and work cells, maximize available space, make room for a new piece of machinery or equipment, or increase their warehouse and production space to keep up with rising demand.
Once these changes are made, fixed structure systems that were pre-manufactured to specific dimensions quickly become obsolete. Companies must either cover the high costs of repair and refurbishment or purchase an entirely new material handling system.
Third, fixed structure material handling systems are by their very nature and design incapable of being flexible. They can’t be adjusted without a costly overhaul, repair, and refurbishment. This makes fixed structure material handling systems extremely problematic for manufacturers, especially ones adopting a continuous improvement mindset.
What do Manufacturers Need?
Manufacturers who adopt lean manufacturing principles need to reduce manufacturing cycle times and reduce transit times to increase production throughput. Sometimes that requires the willingness and ability to customize material handling systems for new product lines or new projects. Unfortunately, that’s not possible with fixed structure material handling.
Manufacturers must optimize their material handling systems throughout the entire production process. This means properly handing and storing incoming raw materials, while also improving the accessibility of those materials and consumables in lean work cells. Next, they need to reduce the transit times for semi-finished parts to adjacent work cells. When the entire material handling process is optimized, the company reduces waste, lowers manufacturing cycle times, and encounters fewer production delays.
The Benefit of a Modular Material Handling System
A modular material handling system is one where employees can make immediate changes to the structure’s layout without encountering extensive delays. These solutions typically include modular piping and tube and joint systems that can quickly be cut, extended, and joined in a fraction of the time compared to a fixed/welded material handling structure. Sometimes these changes can take no more than a couple of minutes.
Unfortunately, adjusting fixed material handling systems typically involves a substantial amount of industrial cutting, machining, and welding which can take days and weeks to complete. Modular systems are cost-effective solutions that are easy to assemble and disassemble without having to worry about extended lost time.
Improving Material Handling for Manufacturers
There are two essential criteria for optimizing material handling across the entire shop floor. First, a material handling structure inside lean work cells should be designed for minimal worker movement. This means parts, tools, materials, consumables, and semi-finished parts are easily accessible to production employees from within their work cells.
Second, the material handling equipment outside the work cell should be just as functional and easy to use as those inside the work cell. This ensures that transit times to move work-in-process parts to the next lean work cell in the production process are minimized.
When both the inside and outside of all lean work cells have optimized material handling structures and material handling equipment, it has the cascading effect of lowering production cycle times across the entire shop floor. After all, a single delay from a production work cell causes the next cell in the chain to experience delays until eventually, every chain in the process is behind schedule.
What can we build with a Modular Material Handling System?
There is simply no shortage of modular material handling systems that companies can make on their own using pipe and tubing systems. These products are perfect complements to a company’s constantly changing manufacturing environment. Without these modular piping solutions, companies would be faced with the high costs and delays of fixing, repairing, refurbishing, and re-welding older material handling equipment, or worse, having to purchase new ones.
Modular and Scalable Flow Racks
Most often associated with inventory and warehousing, material handling flow racks can also be placed in, or immediately outside of, lean manufacturing work cells. Having materials, parts, and consumables stationed in flow racks adjacent to work cells eliminates wasted transit times for employees from the work cell to the warehouse and back again. In essence, these material handling flow racks can sometimes act as small inventory retainers so that employees don’t waste time walking long distances for the materials they need to finish a work order.
Flow racks have an inclined design which makes it easy for employees to access the materials and parts inside production bins. Modular material handling flow racks empowers manufacturers to make relatively quick adjustments to the flow rack to account for a larger bill of materials. This could involve disassembling a portion of the flow rack to add more levels to handle more bins, or widening the length of each rack.
Modular and Scalable Carts
Carts have a multi-purpose function as material handling equipment. First, they help warehouse employees manage, move and store incoming shipments while also helping to prepare outgoing shipments.
Second, they are often essential for moving semi-finished parts and assemblies to and from separate work cells on the shop floor. Sometimes those semi-finished parts can be quite large, wide, or long. Third, they are ideal solutions for moving multiple production bins, parts, and materials for different work orders to different shop floor locations.
While carts have multiple uses, a modular and scalable cart built with tube and joint systems expands those uses and benefits ten-fold. Manufacturers know that nothing is static or stationary on the shop floor for long. Being able to adjust a cart’s size, height and width isn’t a luxury – it’s a necessity. Modular piping solutions empower manufacturers to adjust to any change in requirement.
Modular and Scalable WorkStations
Workstations are the all-important building block of any lean manufacturing work cell. A poorly-made or badly-designed workstation leads to endless wasted time as employees search in vain for poorly-placed parts, tools, instructions, bins, materials, or work orders. All this wasted time reduces operational efficiency.
If the workstation isn’t designed or structured around 5S principles (Sort, Set in Order, Shine, Standardize, Sustain) or worse, is not movement-friendly, then it’s no longer a lean workstation.
As important as a clean workstation is, it’s nowhere near as important as being able to adjust the workstation with modular piping solutions. Invariably, the workstation’s design will need to be changed, or modified at some point, and a fixed structure workstation is extremely difficult to adjust without encountering wasted time and high costs.
Modular and Scalable Racks
Racks are critical for holding inventory within warehouses. Not only do racks help to protect inventory, but their loading capacity means they can hold inventory for long periods. A higher loading capacity means each level protects the inventory on that level and each subsequent level beneath it.
It would be great if you only needed one type of rack with perfectly spaced levels that never need to change, but that is rarely the case. This is why a modular and scalable rack is so important.
Tube and joint systems allow you to create a tailor-made rack with individual levels you can adjust. Since inventory costs are typically based on warehouse square footage, a modular rack system allows you to free up valuable warehouse space, thereby reducing warehousing and inventory costs.
There is nothing more costly or time-consuming than having to change a fixed warehouse racking system. Modular racking can be made to fit the exact size and space you need to store materials, parts, and finished goods and are scalable and adaptable to support any change.
Types of Materials used to build a handling system
There are material handling systems that are pre-manufactured to specific dimensions and made with different types of materials. Ultimately, understanding the pros and cons of these materials is needed to better understand if they are viable solutions for your handling needs.
Aluminum is a lightweight, high-strength, and durable material that often has strong corrosion resistance. It is often used in manufacturing material handling equipment provided the aluminum is properly taken care of. Unfortunately, that is often the problem with a material handling structure manufactured from aluminum. Should that aluminum get stretched – which will eventually happen – then the aluminum’s surface layer will oxidize and corrode.
It’s also not uncommon for aluminum to experience water staining with high magnesium-aluminum alloys staining the most. While this doesn’t necessarily degrade the material’s properties, it is an obvious eye-sore that is less than appealing. Just imagine customers seeing water stains on every single aluminum material handling system you have.
There are plenty of material handling systems that are welded. Unfortunately, these welded structures make the structure’s physical dimensions permanent. Any pre-manufactured or fixed material handling equipment is not easy to adjust or change. In fact, they aren’t designed or supposed to change.
These structures have a role to play for companies like distributors, retailers, or resellers who offer high volumes through a small number of product lines. If these product lines rarely change, then welded structures might work. Unfortunately, business change is commonplace, and welded structures aren’t just expensive to purchase – they’re expensive to fix and replace.
Standard Hardware Store Structures/Shelving:
An argument can be made for hardware store storage and shelving systems. They do play a role in inventory management. However, that role is extremely limited. It’s not uncommon for warehouses to have small shelves that hold small consumables like tape, hammers, nails, scissors, labels, etc. Unfortunately, that’s about it. These systems do not have sufficient load capacity on each shelf which means weight distribution across that shelf is very limited and extremely problematic.
While rarely used, some companies create material handling equipment, workbenches, and workstations out of wood. Unfortunately, this is neither a good material nor a stable material to withstand the heavy loads and repeated use so common in warehouses and production shop floors. Gradually, over time, wood rots, especially when it’s exposed to humidity. As the rot propagates, the wood degrades even further and becomes weaker until eventually, it cracks or breaks. Even in a temperature-controlled warehouse, wood shelving is not a long-term viable solution.
Modular Material Handling Solutions Check all the Boxes
Companies nowadays have multiple concerns. It’s not just about making a good product, building a brand, and keeping customers. While each of these is important, there are other issues today’s companies are starting to take more seriously. Fortunately, a modular material handling system can address all these issues and more.
Ergonomic and Safe Solution
Employee absences due to work injuries are extremely expensive. The typical manufacturer covers $1,000.00 of additional costs every day an employee is injured. When employers adopt ergonomic principles, it immediately has an impact on employee engagement. Their efficiency, productivity, and attendance all improve. In return, companies don’t have to cover as many costs for absences due to injury.
For many industries, a modular material handling system is part of their overall ergonomic strategy. These are the companies that will incorporate anti-fatigue matting solutions inside work cells to provide improved impact resistance for employees. When tube and joint solutions are used alongside anti-fatigue matting solutions, then companies can easily adjust and cut both to accommodate the other.
Modular material handling systems are relied upon because their surfaces, corners and the entire structure is clean, free of burs, and void of any sharp edges. This means modular handling systems are not only ergonomic but safe for use.
Inexpensive Solution Compared to Fixed Structures
Companies faced with modifying fixed structure material handling equipment incur substantial costs and delays. Changing or adjusting fixed material handling systems often involves a tremendous amount of labor-intensive and expensive work.
Simply put, modular piping solutions are easier and faster to assemble, require less expertise, and are nowhere near as expensive or take anywhere near as long as having to send fixed structures to subcontractors. These systems can easily be assembled in-house and adjusted in a fraction of the time compared to a fixed structure material handling system.
Easily Recycled – If needed
Modular handling systems aren’t just easier to work with. While having a system that’s easily customized and adaptable is a definite plus, another benefit includes the ease with which modular systems can be recycled. This is but another way for companies to showcase their environmental stewardship.
The piping and square piping is typically made from steel with a polyethylene coating or a highly-scratch-resistant paint coating. Roller tracks are made from steel or Polyvinyl chloride (PVC) plastic. Joints are also made of steel. Finally, the end caps, pipe connectors, and hinge brackets are either made of PVC or other highly-durable plastic. Ultimately, the result is a material handling solution that is scalable, adaptable, affordable, and recyclable.
Designed with Efficiency in Mind
Modular material handling solutions are designed with efficiency and lean concepts in mind. Companies providing these tube and joint systems are well-aware of how businesses need a scalable and modular solution. These structures can be assembled and disassembled in a fraction of the time when compared to other material handling solutions made from other materials. Ultimately, it’s about enabling companies to make their own changes and structures as they see fit.
Choosing the Right Solution
Choosing a material handling system comes down to defining the type of business you run, the customers you serve, and the market or industry you operate in. Manufacturers have an obvious benefit from using modular material handling systems. However, if you are a small retailer, then modular systems aren’t likely to add any benefits or efficiencies. If you’re a business that sells a few product lines and those product lines never change, then fixed structures might be a solution. However, if your business is constantly changing and continuously growing - and if you know first-hand that fixed structure material handling has not worked for you - then modular systems may just be what you need.
Why you should use AGVs on your assembly line
An automated guided vehicle (AGV) is a computer-controlled vehicle used to carry or tow materials in a manufacturing facility. In this video, Bruce Buscher, vice-president of Daifuku’s AGV group, explains why AGVs are a great solution for your assembly line and how you can integrate them with your material handling system.
Borrowing Lean Manufacturing Concepts from the Automotive Industry
Jerry Collins – a mechanical engineer with 28 years of experience in the automotive industry – uses the pre-production stage as the critical first step to managing future production costs. It’s during this pre-production stage that Jerry uses modular piping systems as a way to layout his production floor and design material handling systems. This reduces costs and makes it easier to modify those handling systems (if needed) once full-scale production starts.
LISTEN: Audio Interview Jerry Collins
In this interview, Society of Cost Engineers founder Jerry Collins explains to Flexpipe project manager Temie Fessa how modular material handling systems have helped him maximize efficiency and profits.
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Find out how any company in any industry can benefit from using tube and joint systems in the pre-production stage as a way to manage costs.
The Origins of Lean Manufacturing
Lean manufacturing can trace its roots back to Henry Ford’s infamous Model T assembly line and the Toyota Production System (TPS) of the early twentieth century. Sometimes referred to as “lean production” or “just-in-time manufacturing”, lean manufacturing focuses on increasing production throughput while controlling costs and minimizing waste.
With lean manufacturing, companies can increase production throughput without sacrificing their cash position or purchasing excessive inventory. Unfortunately, a large number of companies use some lean concepts while never fully implementing others.
Using Modular Piping for a Mocked Assembly Line
Instead of using lean manufacturing principles during the pre-production stage, several companies only adopt lean concepts long after production has started. Unfortunately, this puts them in a read-and-react position where unforeseen changes in product designs force them to make haphazard and extremely costly adjustments. However, Jerry took an entirely different approach.
[caption id="attachment_38531" align="alignnone" width="1000"] A production line simulation using cardboard boxes. Source: Robert Simonis[/caption]
Jerry and his team used modular piping solutions to create a mockup front axle and rear axle assembly line for General Motors. As stated by Jerry, “long before we purchased any equipment, we created a whole facility with modular piping and decided early on how our material handling systems would be structured.” This included using tube and joint systems to create mock machines and equipment in order to create a visual presentation of both on the shop floor.
They also used modular piping to create trolleys to test the transit times between work cells, all the while looking for any possible obstructions. They then created temporary structures in order to simulate how future material handling systems would be positioned beside work cells, equipment, and machinery.
Making Immediate Adjustments within Minutes – Not Days or Weeks
[caption id="attachment_38508" align="alignnone" width="1440"] A dedicated material handling shop will allows you to modify quickly and on spot structures that need adjustments[/caption]
Jerry and his team of engineers chose modular piping solutions during the preproduction stage because of how easily it was to make simple changes. Some of the changes they made to their mock layout took mere minutes, something that is completely impossible to achieve with fixed material handling systems. As Jerry stated, “companies need to plan their material handling systems early on so they can maintain and improve upon their profits margins later.”
Ultimately, the tube and joint solutions replaced all of their larger, fixed-structure material handling frames. According to Jerry, making a single adjustment to their older material handling structures involved sending their heavy-duty racks to “a third party for welding and adjustments which could take weeks and months, whereas if you have a product like Flexpipe, it can be done in an afternoon.”
For Jerry and his team, adopting modular piping systems during the pre-production stage ensured everybody was comfortable with using the solution once production began. So, what are the inherent benefits of using modular piping during the initial pre-production stage?
Adopting Lean Principles in the Pre-Production Stage
Adopting lean concepts in the pre-production stage by using tube and joint systems has three primary benefits. First, it amalgamates the costs associated with laying out the entire production floor for equipment and machinery, while totaling the costs for standing structures, workbenches, shelving, trolleys, flow racks, boards, etc.
This provides companies with a complete picture of their costs. It also allows companies to decide upon how much actual square footage they need for manufacturing. They can avoid the extra costs of leasing/buying too much production space, or conversely, avoid the high costs and delays that come from not having enough production space.
Second, using modular piping solutions in pre-production helps to simplify workflow. Companies have a much easier time choosing which modular piping solutions are needed for all their T-shaped, U-shaped, and S or Z-type work cells. This allows them to maximize the transit times between production work cells, equipment, machinery, and other standing structures. It also helps them choose ideal locations for inventory and part storage.
Third, by adopting tube and joint systems in the pre-production stage, employees are better able to make quick modifications to standing structures and material handling systems once production begins. No more waiting on welding or having to send out heavy-duty racks to third-party suppliers for modifications that may take weeks or months. Instead, with tube and joint systems, the employees can make the changes themselves.
Modular piping is a product designed with lean concepts in mind. Making changes to modular material handling systems is faster, simpler, and far less expensive when compared to fixed-structure systems.
Simple Steps to Using Modular Piping During Pre-production
Again, any company in any industry can use the same approach. It simply comes down to using the following four steps.
1. Use Spaghetti Diagrams to Define Workflow
Spaghetti diagrams allow you to map your workflow so that you have a visual presentation of how physical parts move between part storage, material handling systems, work cells, equipment, and machinery. The goal is to have a sequential process where the parts move naturally and employees aren’t required to walk extremely long distances to move those parts to the next chain in the process.
2. Gather Information About Machinery & Equipment
Defining the physical size of equipment and machinery is an important aspect of maximizing available shop floor space. You’ll need to define the physical dimensions of equipment and machines and visualize how they will be laid out on the shop floor.
3. Define the Number of Material Handling Systems
Once you’ve defined the areas of your shop floor occupied by machinery and equipment, it becomes easy to determine the number of material handling systems you’ll require. To help you in the design of those systems, Flexpipe has created the Flexpipe Creator Extension, an innovative software-based solution that allows you to simplify your designs.
4. Simulate Transit Times
By now, your shop floor should be mocked up with locations for equipment, machinery, standing structures, work cells, and material handling systems. A proactive final step involves simulating transit times between each of these structures to ensure that there is sufficient space for employees to move parts and that the distances they travel aren’t too far.
Flexpipe: Make it Work For You
Flexpipe is an industry leader in tube and joint systems with a strong North American footprint. Long recognized as an innovator, Flexpipe is well-known for its affordable modular piping solutions (30% less expensive) and its customer-centric approach to customer service and after-sales support.
Four Benefits of Karakuri in Lean Operations
The term Karakuri -or Karakuri Kaizen- is derived from the Japanese word meaning machinery or mechanical device used to assist a process with limited (or no) automated resources. Its origins come from the mechanical dolls in Japan that essentially helped lay the foundations of robotics.
Instead of being controlled by software or a computer, the basis of its functionality lies entirely in the overall design of the device. This can range from the simple use of gravity to the use of springs, weights, pendulums, etc.
Many facilities and operations are coming to the conclusion that mechanical automation is the only way to go, as Karakuri Kaizen can provide advantageous and relatively inexpensive solutions that can improve operational processes. This can be achieved by using the "Kaizen" approach, which is based on the idea that the "Kaizen" approach is the only way to improve productivity and reduce costs.
Example of the use of Karakuri in Lean Manufacturing
Karakuri is one of the many tools associated with Lean concepts and methodology. Using its fundamentals allows you to dive deeper into business process improvement, but from a cost reduction perspective - it will ultimately allow you to find innovative solutions with a smaller budget. This is why Karakuri Kaizen is commonly used in Lean Manufacturing. Consider this example:
Toyota had identified an inefficient process within its automotive assembly line in which operators were pushing their material/tool carts by hand. This was resulting in lost productivity and an overall extended production cycle time. So Toyota developed a Karakuri-style cart that can be mounted on the car's engine. Once a car is finished, a weight is released that allows the cart to move to the next vehicle. Toyota also incorporated a tray with parts placed on the fender that allows operators much easier access to materials and tools. Removing non-value-added steps as Toyota has done will progressively reduce process times and allow your operation to produce more, in less time.
Want to know all the ins and outs of building a karakuri structure? Esteban lived the experience and can tell us all about the trials and errors Here is his story.
Four benefits of Karakuri in Lean Manufacturing
Taking an approach like Toyota, one of the world's largest automakers, can provide substantial benefits to a facility attempting to move to a more Lean approach. Using Karakuri Kaizen can provide you with the elements necessary to maintain a competitive edge within your industry.
• Cost reduction - As mentioned throughout this article, Karakuri Kaizen enables significant cost reduction in a variety of ways. By reducing production cycle time and lowering automation and overall material costs as processes are optimized, operations will be able to reinvest in themselves more, as their bottom line will be positively impacted.
• Process improvement – In synergy with other Lean concepts, Karakuri reduces the overall cycle time by "automating" the process with a device, instead of relying on manual movement. Like the Toyota example, breaking down the process and locating non-value added steps will help determine which elements would benefit from innovative Karakuri solutions and structures.
• Quality improvement – Process improvement has a direct impact on product improvement. An inefficient production process increases the chances of manufacturing defects and potential errors, so process planning and establishing the most efficient route can only further improve product quality.
• The simplicity of maintenance – Automated systems lead to increased maintenance costs, especially for operations that are almost entirely dependent on their automation. This will usually result in the need for a 24/7 maintenance team in case the system fails - which it inevitably will. Karakuri devices are easy to maintain because of their simplicity and the materials they are made of, so managers don't have to spend a fortune on a new department and team to keep everything running well.
Karakuri Kaizen provides a beneficial foundation and framework that ensures your production system continues to optimize processes and operational flow. If you are looking to improve operational efficiency, Karakuri is an indispensable tool that will improve performance and enhance the bottom line.
The mechanisms used to make a karakuri
[caption id="attachment_37825" align="aligncenter" width="871"] Le système de levier est un mécanisme couramment utilisée.[/caption]
1- The lever is one of the most important inventions of karakuri style
The lever system is a commonly used structure, especially in simple devices. It allows for easy lifting of heavy objects, as it involves a bar moving on a fixed point (the fulcrum) when a force is applied to it.
2- Inclined planes
Inclines are everywhere - they are almost impossible to avoid. Sloping roads, hills and ramps are examples of inclines we encounter every day. The incline is a simple but effective way to transport an object on an elevated surface or to use gravity to your advantage to send an object down.
3- The winch
A winch is a device that creates or releases tension on a rope or wire to adjust its length, usually by means of a crank. Winches are commonly used in tugboats, fishing boats, cranes and even rescue helicopters.
4- The spring
The spring is another element frequently used in everyday life by many people. It can be found in a mattress, an enclosure and even in a mouse trap. Springs are made of steel and are available in a variety of designs, including the coil spring. Springs store mechanical energy and release it when a restraining force is removed. One can easily picture a spring when thinking of a retractable pen.
5- Magnetic energy
It is said that opposites attract - at least that is the case with magnets. Magnets allow for attraction or repulsion and are another commonly used karakuri-style structure, especially in refrigerators and freezers.
6- The pulley system
Like the other simple systems on this list, the pulley system was a revolutionary idea used in all types of industries. The pulley involves the use of a rope or cord around a rim, which allows for the transmission of energy and motion. It is especially useful when lifting heavy objects; in this regard, the more pulleys added to the system, the more weight is distributed among them, making it easier for the user.
7- Pascal's principle
In the visual below, Pascal's principle demonstrates that a force applied at one point to a liquid in a container is accompanied by equal pressure in all directions. F1 pushes down on A1 in a smaller, more condensed area, but this equal force and pressure will be exerted in A2 and up to F2, thus illustrating the principle.
This principle is widely used in many pieces of equipment such as hydraulic systems, car brakes, barber chairs and a variety of equipment.
The first steps with the Karakuri
Like many other facilities, you may be wondering where to start. Flexpipe offers innovative solutions to your process constraints and understands the importance of having the best equipment available for maximum production efficiency. Our project managers can help you generate ideas and assemblies for your Karakuri structure to take productivity and operational efficiency to the next level. Flexpipe offers innovative solutions to your process constraints and understands the importance of having the best equipment available for maximum production efficiency.Our project managers are able to help you generate ideas and assemblies for your Karakuri structure, to push productivity and operational efficiency to the next level.
You don't have to spend a small fortune to be operationally efficient. Karakuri structures are simple, innovative solutions that are a must for any team looking for cost-saving solutions. Reduce cycle time, improve processes and production quality by contacting Flexpipe for assistance in designing and building a Karakuri structure for your facility.