What exactly does the automatic slitter do? This article will give you a popular introduction:
The traditional control scheme of the slitter is to use a large motor to drive the rewinding and unwinding shaft. A magnetic powder clutch is added to the rewinding and unwinding shaft. The resistance of the magnetic powder clutch is controlled by adjusting the current of the magnetic powder clutch to control the surface tension of the material . Magnetic powder clutch and brake is a special kind of automatic actuator. It transfers torque through the magnetic powder filled in the working gap. Changing the excitation current can change the magnetic state of the magnetic powder, and then adjust the transmitted torque.
        It can be used for stepless speed regulation from zero to synchronous speed. It is suitable for high-speed segment fine-tuning and medium and small power speed regulation systems. It is also used in the unwinding or rewinding tension control system to adjust the torque by adjusting the current to ensure that the tension remains constant during the winding process.
        The main feature of the slitter is that the magnetic powder clutch acts as a resistance device. Through system control, it outputs a DC voltage to control the resistance generated by the magnetic powder clutch. The main advantage is that it is a passive device that can control less tension.

        The main disadvantage is that the speed cannot be high, and it is easy to cause high-speed friction of the magnetic powder during high-speed operation, resulting in high temperature, causing the magnetic powder clutch to heat up and shorten its life.