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 paper-making 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 would easily cause high-speed friction of the magnetic powder during operation, resulting in high temperature, shortening its life, and in severe cases, it would jam, blocking the operation of the machine, and bringing serious consequences to production.
Seriously affect the production efficiency. At present, it adopts double frequency conversion motor control, which makes the magnetic powder friction at a certain value by the frequency conversion motor control when the diameter of the winding material becomes larger. Without high temperature.
The traditional control scheme of the slitting machine is to use a large motor to drive the rewinding and unwinding shaft. A magnetic powder clutch is added to the rewinding and rewinding shaft. The resistance generated by 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 are a kind of special automatic actuators, which transmit torque through the 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 high-speed fine-tuning and medium and small power speed regulation systems. It is also used in 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 has continuously developed from single motor control to dual motors and three motors, which is more stable and efficient under the condition of faster machine speed.
The main feature of the slitting machine is that the magnetic powder clutch acts as a resistance device, which is controlled by the system to output 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 a small tension.
Disadvantages: The speed cannot be high, and high-speed operation will easily cause high-speed friction of the magnetic powder, resulting in high temperature, causing the magnetic powder clutch to heat up and shorten its life. It is a device used to cut a certain width of the coil longitudinally with a cutter and cut it into several narrower sub-rolls. After it is installed in a calender, extruder, glue spreader and other unit devices, continuous cutting can be completed, often with a winding device. The slitting knife can be a flat knife and a round knife.
The slitting machine series products of paper processing machinery: disc slitting machine, small disc slitting machine, web slitting machine, high-speed slitting machine, etc.
Metal processing machinery slitting machine: strip slitting machine, copper plate slitting machine, aluminum plate slitting machine, stainless steel slitting machine, tinplate slitting machine, etc.