How Does a Purlin Roll Forming Machine Work

If you plan to invest in an automatic purlin machine, it is necessary to understand how purlin machine works clearly. A purlin roll forming machine is a fully automated production line that turns raw steel coils into finished C purlin and Z purlin profiles through a continuous cold forming process.

The whole working process is automatic, from coil loading to finished purlin output, with almost no manual intervention. Below is the complete working principle step by step.

Step 1: Uncoiling

The whole process starts with the uncoiler. Workers place the galvanized steel coil or carbon steel coil on the automatic uncoiler. The machine releases the steel sheet steadily at a constant speed, avoiding material deviation and shaking.

Step 2: Leveling and Feeding

After uncoiling, the steel sheet enters the leveling device. It flattens curved or deformed steel sheet to ensure flat feeding, which is the key to high-precision forming. Then the sheet is automatically fed into the roll forming station.

Step 3: Multi-Roll Forming

This is the core part of the purlin roll forming machine. Dozens of groups of high-precision forming rollers bend the steel sheet gradually step by step, until the flat steel sheet is formed into standard C shape or Z shape. The rollers are made of high-quality alloy steel, wear-resistant and long service life, ensuring the purlin size stays accurate.

Step 4: Hydraulic Punching

According to customer’s drawing requirements, the machine automatically punches mounting holes on the purlin. The hydraulic punching system works fast and the hole position is precise, convenient for later installation and connection of steel structures.

Step 5: Fixed-Length Hydraulic Cutting

When the purlin reaches the set length, the system automatically stops feeding, and the hydraulic cutting device cuts the profile smoothly. No burrs on the cutting surface, no deformation of the purlin body.

Step 6: Finished Product Output

After cutting, the finished C purlin or Z purlin slides to the output table automatically. Workers only need to stack and store the finished products. One person can manage the entire production line easily.

Features of Automatic Purlin Machine

• PLC intelligent control, easy to set size and length
• Whole process automatic running, save labor cost
• Stable operation, low noise and low failure rate
• High output speed, suitable for mass production
• Support custom size, hole spacing and thickness

Final Summary

The working principle of the purlin roll forming machine is simple but efficient: uncoiling → leveling → forming → punching → cutting → output. It greatly improves production efficiency and product quality for steel structure factories.

If you are looking for a reliable automatic purlin machine, we can provide standard models and customized solutions. Contact us to get detailed machine parameters and factory price.