Rollforming is a bending process in which a sheet or strip material change the shape plastically along. Coupled rolls mould sheet materials in succession of transitions till materials reach required shape.
Rollforming machines are composed of the following main units:
Rollforming cell is an essential element of rollforming system. Its purpose is through rotating shafts and profiled rolls onto them, to set certain form to the lodged metal strip at a given stage of technological process. They also impel the partially shaped profile to the next stage of the rollforming process. The profiled rollers may be coated with hard chromium to work with PVC sheet.
Cutting device is intended to cut the finished profile to a certain size. It must be mounted after the straightening device. Matrix must be mounted after straightening head in such a way as to be the profile to be able to pass freely through it when the swage (поансона) is in starting position. Cutting device consists of a matrix with hydraulic cylinder – piston which is connected to a swage. Cylinder is connected through hose-pipes, distributors and nozzles to a hydraulic aggregate (electric motor and pump).
Technological process managed by microcontroller (PLC) and operator console(HMI).
Main propulsion system with frequency inverter-allows smooth start-up and speed management.
- Material loading on low speed.
- Manual mode – control of individual units by operator console (HMI).
- Automatic mode – management with predefined size and quantity, without human intervention.