Core Advantages of Automatic Conversion C-Type Roll Forming Machine

1. One-click profile switching, maximum production flexibility

The automatic conversion C-type roll forming machine is a fully automatic cold forming equipment designed for producing C-shaped steel purlins—core load-bearing components in modern steel structure buildings. Its defining feature is the ability to switch between different profile sizes and types (typically C and Z) with a single button on the PLC touch screen, without disassembling forming rollers or replacing molds manually. Changeover time can be as fast as 1-5 minutes, replacing two separate single-profile machines and cutting equipment investment by up to 50%.

2. Stepless size adjustment across full specification range

Unlike traditional machines that require manual roller changes or spacer adjustments for each different size, this machine supports stepless adjustment of web height, flange width, and lip length within a broad range—typically C: 80-300mm, Z: 80-300mm. The infinite-size cutting system automatically adapts to different dimensions without changing blades. This versatility allows manufacturers to respond instantly to diverse order requirements without lengthy downtime.

3. High precision and consistent quality

Driven by high-precision servo motors and imported encoder positioning, the machine controls product size tolerance within ±0.5mm. Forming rollers are made of high-grade materials such as 45# carbon steel, GCr15, or Cr12MoV, with precision grinding and hard chrome plating (HRC 58-62), offering excellent wear resistance and long service life. The main frame adopts thickened high-strength welded steel with overall annealing treatment, ensuring zero deformation even under long-term high-load operation. Finished purlins feature smooth surfaces, no burrs or distortion, and fully comply with international steel structure building standards.

4. Significant material and cost savings

The cold roll forming process utilizes galvanized steel coil continuously with virtually no scrap between cuts, achieving material utilization rates over 98% when equipped with pre-cut systems. The machine integrates decoiling, leveling, punching (web and flange holes), roll forming, and hydraulic cutting into one continuous line, eliminating secondary handling and reducing waste. With pre-punching capability on both web and flange sides, no separate punching equipment is required.

5. Reduced labor and operational costs

· Labor cost: Full automation from coil feeding to finished stacking allows a single operator to supervise the entire line; unmanned production reduces manual labor input by up to 70%.

· Energy cost: Main motor power is typically 22-30kW with hydraulic power of 4-15kW. Cold forming at room temperature consumes far less electricity than hot-rolled or press-brake methods.

· Maintenance cost: Modular design and standard components make servicing quick and affordable. Key electrical components use international premium brands (Siemens, Schneider, Delta) for stable, long-term running.

6. Compact integrated design and high efficiency

The machine integrates decoiling, leveling, feeding, roll forming (typically 13-20 forming stations), punching, and hydraulic cutting into a single production line. Overall dimensions are approximately 10,500-11,800mm in length, 1,400-1,850mm in width. Production speed ranges from 8-25m/min (up to 30m/min with servo drives) for 24-hour uninterrupted production, with overall efficiency over 60% higher than semi-automatic models.

Product parameters

Preparation Before Production

1. Comprehensive safety inspection

· Check the main frame, transmission components (chains, gears, couplings, gearboxes) for tightness, wear, and proper lubrication.

· Ensure no foreign objects (tools, scraps, debris) remain between the forming rollers.

· Test the emergency stop button, foot switches, and safety guards. Confirm that all safety interlocks and limit switches are functional.

· Verify that electrical connections are secure and grounding is reliable (standard voltage: 380V/50Hz/3 phases).

2. Raw material preparation

· Select the correct galvanized steel coil, PPGI, or PPGL according to the production plan. Confirm material thickness (typically 1.0–3.0mm for C purlins), width, and coating type.

· Load the coil onto the hydraulic or manual decoiler, adjust the expansion mandrel to hold the coil securely, and ensure the coil is free from damage, scratches, or deformation.

· If multiple coils with different thicknesses or widths are used, clearly organize and label them to avoid mix-ups.

3. Equipment configuration and debugging (most critical step)

· Select target profile: On the PLC touch screen, select the desired profile type (C or Z) and input the target dimensions (web height, flange width, lip length) within the machine's range (typically 80-300mm).

· Automatic adjustment: The machine automatically adjusts roller gaps, forming widths, and lip angles to the programmed specification via servo motor control and screw-driven mechanisms. No manual roller changing or spacer adjustment is required.

· Set punching parameters: Configure the punching unit for web and/or flange hole patterns at the correct spacing and location.

· Configure PLC cutting parameters: On the touch screen, set the cutting length, production quantity, punching interval (if any), and forming speed (recommend starting at 5-8m/min for trial runs).

· Run a dry cycle: Jog the machine without material to confirm smooth operation of all rollers, feeders, and hydraulic cylinders, and verify that sensors and limit switches respond correctly.

4. Trial run with material

· Thread the coil end through the feeding guide, leveling unit (typically 4-over-3 or similar roller configuration), and roller stands.

· Run the machine at low speed for the first 1-2 meters, checking for straightness, hole alignment, and cut accuracy.

· Take a sample piece and measure: web height, flange width, lip length, hole positions, and overall squareness. Check surface quality for scratches or coating damage.

· Adjust parameters via the touch screen as necessary until the sample meets all quality standards.

· Only after approval should full-speed production commence (8-25m/min or higher).

5. Personnel preparation and safety precautions

· Only trained operators who are familiar with the machine's operation and emergency procedures are permitted to run it.

· Wear appropriate PPE: safety gloves, goggles, hearing protection, and steel-toe boots. Avoid loose clothing or jewelry near moving parts.

· Keep the work area clean and organized—remove oil spills, scrap strips, and obstacles. Barricade the decoiler area during coil loading/unloading to prevent accidental access.

· Never touch the forming rollers or moving strip while the machine is running. Immediately press the emergency stop if any abnormal noise, vibration, or misfeed occurs.

· Ensure fire extinguishers and first-aid kits are readily available in the production area.

· The machine typically comes with a 1-2 year warranty and includes professional installation, debugging, and training services.