Slitting machine whose main function is to large max-width='100%' width rolls of film (aluminum film, plastic film, paper, etc.), slitting into small diameter and small max-width='100%' width of the applicable rolls of the machine. Slitting machine seems simple, in fact, is very complex. The formation and control of tension in the slitting process is one of the keys to the quality of the finished reel. Generally, the speed is relatively fast and the control accuracy is required to be high, of which tension control is the core of its control. Tension control is the ability to durably control the tension of the raw material as it is conveyed through the machine. This control must remain effective for any operating speed of the machine, including machine acceleration, deceleration and uniform speed. It should have the ability to ensure that the slit material is not broken, even in an emergency stop situation. The stability of the tension control is directly related to the quality of the slit product. If the tension is not enough, the raw material in the operation of the drift, there will be slitting rewinding after the finished paper wrinkled phenomenon; if the tension is too large, the raw material is easy to be pulled off, so that the slitting rewinding after the increase in the number of finished paper guillotine.

    Factors affecting the stability of tension

    Tension fluctuations and changes in the factors tend to be more complex, the main factors affecting the following aspects.

First, the machine's lifting speed changes will inevitably cause changes in the tension of the machine.

Second, the slitting machine in the process of winding and unwinding, winding and unwinding diameter is constantly changing, changes in diameter will inevitably cause changes in raw material tension. Unwinding in the case of constant braking torque, the diameter decreases, the tension will increase. And winding is the opposite, if the winding torque is unchanged, with the winding diameter increases, the tension will decrease. This is the main factor in the operation of the raw material tension changes.

Third, changes in the tightness of the raw material rolls at the same time will cause changes in the tension of the machine.

Fourth, the unevenness of the slitting raw material material. Such as fluctuations in material elasticity, material thickness along the max-width='100%' width, length direction changes, etc., the quality of the roll of material eccentricity, as well as the production environment temperature, humidity changes will also affect the tension fluctuations of the machine.

Fifth, the slitter's transmission mechanism (such as guide rollers, floating rollers, spreading rollers, etc.) there is an imbalance and air pressure instability and other factors.