The Development History Of Slitting Machine

The slitting machine is a pre-press and post-press equipment that slits 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, generate high temperature, shorten its life, and in severe cases, it would get stuck, causing the machine to be blocked, which brought serious consequences to production.
It seriously affected the production efficiency. Now it adopts dual frequency conversion motor control, so that when the diameter of the winding material increases, the frequency conversion motor control is used to keep the magnetic powder friction at a certain value. And no high temperature will occur.
The traditional control scheme of the slitting machine is to use a large motor to drive the winding and unwinding shaft, and a magnetic powder clutch is added to the winding and unwinding 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. The magnetic powder clutch and brake are a special automatic actuator that transmits torque through the magnetic powder filled in the working gap. Changing the magnetic current can change the magnetic state of the magnetic powder, thereby adjusting 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 to adjust the torque by adjusting the current to ensure that the tension remains constant during the winding process. The slitting machine is constantly developing from single motor control to dual motor and three motors, which is more stable and efficient when the machine speed is faster. The main feature of the slitting machine is that the magnetic powder clutch is used as a resistance device. Through system control, a DC voltage is output to control the resistance generated by the magnetic powder clutch. The main advantage is that it is a passive device and can control a smaller tension. Disadvantages: The speed cannot be high. When running at high speed, it is easy to cause high-speed friction of magnetic powder, generate high temperature, cause the magnetic powder clutch to heat up and shorten its life. A device used to cut a certain width of coil longitudinally with a tool and cut it into several narrower strips. After installing it in a unit device such as a calender or extruder, a gluing machine, etc., continuous strip cutting can be completed, often with a winding device. The strip cutting knife can be a flat blade knife and a round mouth knife. Paper processing machinery slitting machine series products: disc paper slitting machine, small disc paper slitting machine, roll paper slitting machine, high-speed slitting machine, etc.
Metal processing machinery slitting machine: strip steel slitting machine, copper plate slitting machine, aluminum plate slitting machine, stainless steel slitting machine, tinplate slitting machine, etc. [1]
Tension control
The magnetic powder brake of the slitting machine is installed on the unwinding group of the slitting machine, which is connected to the air shaft with a transmission part. The unwinding speed is controlled by controlling the torque of the magnetic powder brake. The magnetic powder brake is selected according to the size of the whole roll of material of the unwinding group of the slitting machine. The common specifications of the magnetic powder brake of the slitting machine are 12Nm, 25Nm, 50NM, 100Nm, 200Nm, and 400Nm. The main function of the magnetic powder brake of the slitting machine is to provide a balanced and stable torque. It can be used with the tension controller to adjust the torque, so that the unwinding work of the slitting machine and the efficiency and quality of the entire action can be improved.
The magnetic powder brake has precise and simple tension control, which can prevent the material of the unwinding group of the slitting machine from moving. The magnetic powder brake of the slitting machine adopts DC24V DC voltage, and the heat dissipation can be selected by natural cooling (air cooling) or by installing a fan for forced heat dissipation. When installing, please keep the magnetic powder brake of the slitting machine on the horizontal axis and the surrounding environment should not be too humid.
Equipment features: 1. Centralized panel operation, integrated circuit control. All parts of the machine are concentrated on the panel operation control. 2. Main functions of the panel: A. Spindle speed adjustment B. Rewinding length setting C. Unwinding tension adjustment D. Rewinding tension setting E. Start. Stop button. 3. The cutter adopts upper and lower circular knives. And the lower knife pad can be replaced according to different cutting widths, and the cutting width can be adjusted to achieve high-quality cutting quality.
Use environment
The machine should be installed in a place with appropriate temperature, dryness, ventilation, good light, and convenient operation.