How Automated Purlin Stacking Changed the Industry

From Manual Handling to Automated Stacking of Long, Heavy Purlins

As purlin rollforming technology became faster and manufacturers began producing longer and heavier structural components, one part of the production process became increasingly difficult to manage:

What happens after the purlin leaves the rollformer?

For years, operators were responsible for manually catching, moving, aligning and stacking finished purlins. As part lengths increased and production speeds accelerated, this became more than a labor issue. It became a productivity and safety challenge.

The development of automated purlin stacking systems changed the way manufacturers could approach the entire production process.

Longer Purlins Created a New Challenge

Modern purlin rollforming lines can produce parts in lengths that can be difficult for operators to handle manually.

A long C or Z purlin is not only awkward to move—it can also be heavy, flexible and difficult to control.

As production speeds increased, operators had to work faster to keep up with the rollformer.

The traditional process often required employees to:

• Catch the finished purlin

• Move it away from the line

• Align it with previous parts

• Build the bundle

• Keep the stack organized

• Repeatedly handle long steel components

As part lengths and production speeds increased, the physical demands on the operator increased as well.

The result was a growing disconnect between the speed of modern rollforming equipment and the ability of people to safely handle the finished product manually.

Automation Changed the Operator's Job

Automated stacking changed the operator's role from manually handling every purlin to monitoring and managing the production system.

Instead of physically catching and stacking each part, the operator can focus on:

• Setting up production

• Monitoring the line

• Managing coils

• Verifying production parameters

• Monitoring bundle sizes

• Managing finished bundles

• Responding to alarms or machine conditions

This is an important shift.

The operator is no longer the material-handling system.

The machine takes over the repetitive physical work while the operator manages the process.

Safety Became Just as Important as Productivity

The development of automated stacking wasn't simply about producing parts faster.

It also addressed the increasing physical demands placed on operators.

Long steel purlins can be difficult to control manually, particularly when production speeds are high. Repeated lifting, pulling, pushing and repositioning of material can create unnecessary ergonomic risks.

Automated stacking reduces the amount of direct operator interaction with moving finished parts.

This can help create a safer production environment while also making the operation less physically demanding.

For manufacturers producing long and heavy purlins, this can be one of the most important advantages of automation.

ASC's Patented Purlin Stacking System

ASC Machine Tools developed a patented C/Z Purlin Stacker specifically to address the challenges associated with automatically handling finished purlins.

The ASC system is protected by U.S. Patent No. 10,196,218 B2 and was designed for high-volume purlin production.

The system automatically receives finished C, Z and other structural profiles and organizes them into bundles without requiring the operator to manually handle each part.

ASC's standard system is designed for Cee, U, Zee purlins and Eave Struts, with configurations available for long parts and different production requirements.

Designed for Today's Purlin Lengths

Modern purlin production is no longer limited to short structural components.

ASC's patented stacking system is available in configurations for long parts, with standard stacker lengths ranging from 20 to 60 feet, with custom lengths available for specific applications.

The system can also handle a broad range of C and Z purlin sizes, including configurations for web widths up to 24 inches.

This allows the stacking system to keep pace with modern purlin production rather than becoming the bottleneck at the end of the rollforming line.

High-Speed Production Requires High-Speed Stacking

A rollforming line can only achieve its full production potential if the downstream equipment can keep up.

ASC's high-speed purlin lines can operate at speeds up to 300 FPM, depending on the application and configuration. The patented C/Z stacking system is designed to integrate with these high-speed production systems.

The stacker can achieve typical cycle times of approximately 5–9 seconds, with even faster cycles possible depending on part length, profile, material thickness and line speed.

This is critical because a high-speed rollformer paired with a slow or manually operated stacking process simply moves the bottleneck downstream.

From Individual Parts to Finished Bundles

One of the major advantages of automated stacking is that the machine doesn't simply move the parts. It organizes them.

The ASC stacking system can be configured with side-transfer conveyors and staging areas that allow finished bundles to be moved away from the primary production area. The staging system can accommodate multiple bundles, helping maintain continuous production.

This creates a more complete production flow:

Coil → Punching → Rollforming → Cutoff → Stacking → Bundle Staging

The operator can monitor the process rather than physically performing each step.

Automation Also Improves Production Consistency

Manual stacking can produce variations in bundle alignment and organization.

An automated system follows a programmed sequence for each part.

ASC's touchscreen control system provides operators with setup information, while the integrated Part Library can provide information such as bundle sizes, dimensions and weight.

This helps turn stacking from a manual task into a repeatable manufacturing process.

The Bigger Change: Designing the Whole Line Around Automation

Automated stacking is part of a much larger evolution in purlin manufacturing.

Modern lines can integrate:

Automated Coil Handling

↓

Servo Feeding

↓

Automated Punching

↓

High-Speed Rollforming

↓

Flying Cutoff

↓

Automated Stacking

↓

Bundle Staging

The result is an integrated production system rather than a rollformer with people performing manual operations around it.

ASC's TKR-X and high-speed purlin lines are designed with multiple levels of automation, while the patented C/Z Purlin Stacker can be integrated into new or existing purlin rollforming lines.

Automation Is Changing What Operators Do

The most important impact of automated stacking may not be the machine itself.

It is the change in the operator's job.

The operator no longer needs to spend the production shift:

Catching → Lifting → Pulling → Aligning → Stacking

Instead, the operator can focus on:

Monitoring → Controlling → Inspecting → Managing → Optimizing

That is a fundamental change in how purlin manufacturing can be organized.

The Future of Purlin Production

As purlins become longer, heavier and more complex, manufacturers will continue to look for ways to automate the physical handling of finished products.

The next generation of purlin production isn't simply about making the rollformer faster.

It is about creating a production system in which:

The machine forms the part. The machine cuts the part. The machine stacks the part.The operator manages the process.

ASC's patented C/Z Purlin Stacking System was developed to help make that transition possible.

Less Manual Handling. Greater Safety. Higher Productivity.

Automated purlin stacking isn't just an accessory to the rollformer—it is a critical part of the modern purlin production system.