The slitting machine is a pre-press and post-press equipment that cuts a large roll of paper, film, non-woven fabric, aluminum foil, mica tape and other thin materials into small rolls of different widths. It is often used in papermaking machinery and printing and packaging machinery.
In the past, the speed of the magnetic powder clutch of the slitting machine could not be high, because it was easy to cause high-speed friction of the magnetic powder during operation, resulting in high temperature and shortening its life.
Seriously affect the production efficiency. Now it is controlled by double frequency conversion motor, so that when the diameter of the winding material becomes larger, the magnetic powder friction is kept at a certain value through the control of the frequency conversion motor. without high temperature.
The traditional control scheme of the slitting machine is to use a large motor to drive the shaft of the rewinding and unwinding, and a magnetic powder clutch is added to the reeling and unwinding shaft to control the resistance generated by adjusting the current of the magnetic powder clutch to control the surface tension of the material. . Magnetic powder clutches and brakes are special automatic actuators. They transmit torque through magnetic powder filled in the working gap. Changing the magnetic 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, suitable for fine-tuning of high-speed section and speed regulation system of medium and small power. It is also used for the unwinding or rewinding tension control system that adjusts the torque by adjusting the current to ensure that the tension remains constant during the winding process.
The slitting machine continues to develop from single-motor control to double-motor and three-motor control, which is more stable and efficient under the condition of faster machine speed.
