Cold bending forming machines are plastic forming machines that use sequentially arranged multi-pass forming rollers to apply pressure to metal sheets, strips, or pipes at room temperature, causing plastic deformation to obtain profiles with specific cross-sections. They offer advantages such as high material utilization, high production efficiency, high product precision, and low energy consumption.
Roller-type cold bending forming machines are the main and most common type. Their working principle involves using a series of specific rollers to progressively bend and shape metal strips laterally. They are suitable for large-scale production, producing high-precision and stable-quality products.
The structural components of a roller-type cold bending forming machine include: an uncoiler, responsible for unwinding the metal coil for production; a leveler, which eliminates unevenness and internal stress in the sheet metal to ensure forming quality; a forming machine, the core component, which shapes the material using rollers; a cutting device, which cuts the steel to the required length; and a control system, which precisely regulates each part to ensure normal equipment operation and stable product quality.
In addition to standard roll forming machines, there are also specialized production lines designed for specific products, including C-shaped/Z-shaped steel forming machines, steel decking (floor decking) production lines, guardrail forming machines, photovoltaic bracket forming machines, cable tray forming machines, warehouse racking forming machines, corrugated pipe forming machines, automotive beam/profile forming machines, and roof/wall panel forming machines.
The development of cold bending forming technology can be roughly divided into three stages. In recent years, new cold bending forming processes have emerged, such as four-roll forming, flexible cold bending forming, CAT forming, and "roll punching" hole processing. Simultaneously, to improve precision and automation, intelligent functions such as high-precision cold bending forming machines, eccentric adjustment gap mechanisms, servo motor cutting, remote operation and maintenance, and automatic conversion of CAD drawings have appeared.
