Fully Automatic C Purlin Roll Forming Machine

The Fully Automatic C Purlin Roll Forming Machine converts cold-rolled and galvanized steel coil into structural C-section purlins through a continuous cold-roll forming process. This automated continuous sequence eliminates manual material handling between operations, ensuring high dimensional consistency and structural integrity. Engineered for steel structure fabrication, industrial warehouse construction, agricultural buildings, and commercial roofing systems.

Fast Stepless Changeover: PLC-driven automatic sizing reduces size setup times from hours to under 5 minutes.
Coating Protection: Optimized roller surface geometry prevents scratching or flaking on pre-painted or zinc-galvanized sheet surfaces.
In-Line Punch Integration: Eliminates off-line layout and drilling costs while maintaining an accuracy of plus or minus 0.5 mm.
Closed-Loop Encoder Control: Precise cut-to-length operation minimizes material waste and scrap ends.
Industrial Structural Durability: Heavy-wall structural steel base and vacuum heat-treated rollers ensure a long equipment lifecycle under multi-shift operation.

Commercial & Industrial Warehouses: Roof purlins, wall girts, and door frame trimmers.
Industrial Workshops: Long-span framing members for high-bay manufacturing facilities.
Agricultural Structures: Structural supports for greenhouses, livestock housing, and storage sheds.
Mezzanine Flooring: Floor joist networks in modular multi-story steel structures.

Hydraulic Decoiler
Heavy-duty expandable mandrel decoiler supporting 5-ton to 10-ton coil capacity. Features pneumatic snubbing arms and automatic loop control for smooth strip payoff.

Leveling and Feeding Unit
Multi-roll precision leveling system eliminates coil set and longitudinal curvature before material reaches the punching and forming stations.

Inline Hydraulic Punching Unit
Dual-cylinder/multi-die hydraulic system capable of web and flange hole punching. Hole size, spacing, and matrix patterns are configured directly via the PLC interface.

Progressive Roll Forming Mill
Heavy-duty side stands housing precision-machined GCr15/Cr12 rollers. Bending is distributed evenly across passes to eliminate internal material strain.

Hydraulic Cut-Off Unit
Post-forming hydraulic shear blade shaped to the C-purlin contour, delivering clean, burr-free cuts without profile deformation.

PLC Control Cabinet
Centralized control housing the PLC, frequency inverters, and low-voltage protection equipment. Integrated touchscreen provides real-time system diagnostics and job batch management.

Run-Out Table
Non-marking roller conveyor or automatic stacking unit (6 m–12 m length options) for efficient unloading.

The integrated hydraulic punching assembly executes flexible connection hole configurations on demand during continuous feed:
Punching Configurations: Single holes, elongated slots, dual-web patterns, and flange attachment points.
Position Control: Encoder-linked hydraulic firing guarantees longitudinal hole positioning accuracy within ±1.0 mm.
Data Input: Punching positions are programmed alongside profile cut-length parameters within the touchscreen interface.

Parameter Entry: Operator inputs target purlin length, total order quantity, and hole coordinates.
Real-Time Tracking: High-resolution encoder provides feedback to the PLC core.
Hydraulic Shearing: Upon reaching target length, the line briefly pauses or synchronizes to shear the section using Cr12MoV die-matched blades.

Every machine undergoes comprehensive factory testing prior to international shipment:
Component Precision Processing: Heavy structural frames CNC-milled; main shafts induction hardened, precision ground, and dynamically balanced.
Pre-Shipment Trial Production: Minimum 8-hour continuous test using client-specified raw material grades and thicknesses.
Inspection Protocol: Full dimensional verification of finished C-purlins against engineering drawings, including web height, flange squareness, lip angles, hole centers, and cut length tolerances.

12–24 Months Quality Warranty: Complete coverage for mechanical and electrical parts under standard operating conditions.
Remote Diagnostics: Internet-enabled PLC modules allow immediate online troubleshooting and software updates by factory software engineers.
On-Site Installation: Technical engineers available for overseas factory setup, line calibration, and operator training.

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