High Speed Paper Core Roll Converting Machine

What is an Auto Spiral Perforated Tube Rolling Machine?

It is a sophisticated, automated industrial machine designed to produce long, continuous tubes with perforated patterns from a coiled metal strip. The process integrates two key functions:

1. Spiral Forming & Welding: It forms a flat strip into a continuous spiral (helical) tube and welds the overlapping edges.

2. Perforation: It punches a precise pattern of holes (perforations) into the metal strip before or during the tube-forming process.

How It Works (Typical Process Flow)

1. Decoiling & Straightening: A coiled metal strip (stainless steel, carbon steel, aluminum, etc.) is loaded and automatically fed into a straightening unit.

2. Perforation (In-line): The straightened strip passes through a high-precision servo-driven punching unit. This unit, using a custom-designed punch and die, stamps the desired hole pattern (round, square, slot, decorative, etc.) onto the strip.

3. Forming: The perforated strip is then progressively formed by a series of rolls. The edges are curled to create the helical lock-seam or prepared for welding.

4. Welding: The overlapping spiral seams are welded together using TIG (for high-quality, oxidation-free welds) or HF (High-Frequency) contact welding (for high speed). This creates a strong, continuous tube.

5. Sizing & Cutting: The tube passes through sizing rolls to achieve perfect roundness and diameter. Finally, an automated flying cut-off saw or cutter cuts the tube to pre-set lengths without stopping the production line.

6. Control & Collection: The entire process is monitored by a PLC and HMI (Human-Machine Interface). Finished tubes are collected on a rack or conveyor.

Key Components of the Machine

• Uncoiler & Straightener: Holds and feeds the master coil.

• Servo Punching Unit: The heart of perforation, with a heavy-duty press, punch, die, and servo for synchronization.

• Forming Station: A series of hardened steel rolls arranged in a cage frame to gradually shape the strip.

• Welding System: TIG or HF welding apparatus with wire feeder (if needed).

• Sizing Station: Precision rolls to calibrate the tube diameter.

• Flying Cut-Off Unit: Servo-driven saw or cutter.

• PLC Control Cabinet & HMI: For automated operation and parameter setting.

• Exit Conveyor / Racking System.

Advantages & Features

• High Efficiency: Produces finished perforated tubes in a single, continuous automated process.

• Design Flexibility: Hole pattern, tube diameter (from ~20mm to over 1000mm), material thickness (typically 0.5mm to 4.0mm), and pitch are easily adjustable.

• Consistent Quality: Automation ensures uniform perforation and weld quality along the entire tube length.

• Material Savings: Uses coiled strip, minimizing waste compared to perforating pre-made tubes.

• Long Lengths: Can produce tubes significantly longer than typical mill lengths.