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- Coil Feeding – The steel coil is loaded and fed into the forming line through the guiding system.
- Roll Forming – Multiple roller stations gradually bend the flat strip into the required Sigma profile.
- Punching – Connection holes are punched in-line according to the specified hole pattern.
- Cutting – The formed purlin is cut to the required length.
- Collection – Finished Sigma purlins are transferred to the output section for inspection and handling.
Sigma purlin roll fomer Description
| Item | Specification |
|---|---|
| Forming Process | Continuous Cold Roll Forming |
| Profile Type | Sigma Purlin / Customized Sigma Profile |
| Applicable Material | Steel Coil |
| Material Thickness | Customized According to Profile Design |
| Forming Stations | Configured According to Profile Structure |
| Punching System | Optional / Customized |
| Cutting System | Hydraulic or Customized Configuration |
| Drive System | Mechanical Transmission |
| Control System | PLC Control |
| Production Speed | Configured According to Profile and Process |
| Coil Feeding | Customized According to Coil Specifications |
Sigma Purlin Roll Fomer Features
One-stop Solution
The machine uses multiple roller stations to gradually bend the steel strip into the Sigma profile. Progressive forming reduces sudden deformation and allows the profile geometry to be controlled throughout the forming process.
Profile-Based Roller Tooling
Sigma purlins can differ in web width, flange dimensions, lip structure, and overall height. The roller tooling is therefore designed according to the target profile drawing rather than using a fixed configuration for every project.
In-Line Punching and Cutting
For purlins requiring bolt holes or connection openings, an in-line punching unit can be incorporated into the production line. The cutting section then separates the continuously formed profile according to the specified finished length.
Adjustable Production Configuration
The machine configuration can be matched to different steel grades, thicknesses, profile dimensions, and hole arrangements. Feeding, forming, punching, and cutting sections are selected according to the actual production requirements.
Profile & Machine Design Guide
Before designing the Sigma Purlin Roll Forming Machine, the following profile and production details should be confirmed:
- Profile Dimensions – Provide the Sigma purlin drawing with web width, flange dimensions, lip size, and overall height.
- Material Specification – Confirm the steel grade, coil width, material thickness, and other relevant material conditions.
- Hole Pattern – Specify hole diameter, spacing, position, and whether punching is required before or during forming.
- Profile Range – Confirm whether the machine will produce one Sigma purlin size or multiple sizes, as this affects tooling and changeover design.
- Finished Length – Define the required cutting length and dimensional tolerance for the finished purlins.Production
- Requirements – Provide expected production speed and operating requirements so the feeding, forming, punching, and cutting systems can be configured accordingly.
Is Punching Included in the Roll Forming Line?
Yes, an in-line punching system can be integrated into the Sigma Purlin Roll Forming Machine when the profile requires bolt holes or connection openings. The punching position, hole size, spacing, and pattern are configured according to the customer's profile drawing.
During continuous production, the steel strip is accurately positioned before punching and then enters the roll forming section for progressive shaping. This allows hole processing and profile forming to be coordinated within the same production line, reducing the need for separate punching operations.
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