For W.KCNC four-roller plate bending machine, the lifting of the lower roll and the side roll is operated by a motor and automatically measured by PLC control. The synchronization precision is also controlled by PLC. The upper roller is driven by an electromechanical gear box. After the gear is reversed and restored under the driving of the motor, the generator will drive the upper roller to rotate one by one. This machine has the advantages of high technology content, multi-function, high precision, convenient operation, etc. It is the ideal equipment for the manufacture of large and medium-sized rolls.