In all models of BIT’s PR4 4 roll plate rolling machines, the top and lower rolls are the main driving rollers, which provide torque for sheet rolling through their rotation; the position of the top roll is fixed, and the lower and side rolls can be moved up and down, the rotation of all rolls is hydraulically driven. The lifting and lowering of the lower and side rolls, as well as the overturning and resetting of the unloading bracket of the top roll, are all driven by the oil cylinder. Each rolls bearing body and oil cylinder are installed inside the equipment.
The rolling processing method of PR4 plate rolling machines allows the cylindrical ferrule to be made in one pass. Compared with the symmetrical 3-roll bending rolls, it can directly pre-bend the end of the plate without the aid of other equipment and molds, and the remaining straight edge is small. Compared with the asymmetric 3-roll bending machines, they can make cylindrical ferrules at one time. Bending the workpiece into a workpiece not only improves the efficiency and ensures the quality of the workpiece, but also has a simple process and convenient operation.