Running the slitting semi-finished product on the slitting machine is a process of unwinding and rewinding. This process includes two parts: the machine's operating speed control and tension control. If the processing accuracy of the detection roller is poor during operation, the tension of the aluminum foil cannot be guaranteed. stability, which in turn affects product quality.
What is the attenuation and tension compensation of the rewinding and unwinding tension of the slitting machine? It is generally believed that keeping the tension of the aluminum foil constant when the aluminum foil is unwound is beneficial to the quality of the finished aluminum foil. In fact, the best way for the slitting machine is to increase the tension of the aluminum foil according to a certain rule with the increase of the diameter or weight of the material roll, and the smaller the diameter and weight, the smaller the tension value will be.
Since there are automatic tension control and manual tension control in the slitting operation, the manual tension control part of the slitting machine needs to be continuously adjusted by the operator according to the diameter and weight of the master roll.
The difference is that the automatic tension control system has a pre-set tension attenuation value, which will attenuate according to the change of the material roll during the operation of the slitter. However, when setting the automatic tension operation, the initial tension should be set first, and then the tension attenuation value should be set.
Taking the attenuation value at the unwinding place of the slitting machine for aluminum foil as an example, the setting principle is: the attenuation value of the tension of the aluminum foil (%) is equal to the tension at the end of winding of each roll of aluminum foil minus the initial tension and then divided by the initial tension to obtain the quotient Multiply by 100%.
In addition, when setting the automatic tension value for the slitting machine, it should not be too large, otherwise the surface hardness of the aluminum foil winding will be high, and edge warping will easily occur, but the tension should not be too small, too small will easily cause the rewinding body to be too loose Run sideways irregularly.
Therefore, it can be seen that during the operation of the slitting machine on the aluminum foil, the quality of its winding and unwinding is mainly affected by the change of the tension of the aluminum foil. It can be seen that the reasonable control of the tension of the winding and unwinding control system is the key to the quality.
