In the slitter, the unwinding device plays an important role in the whole slitting and cutting operation. If the unwinding device fails, a lot of effects will be caused. Experts have explained the common failures and the maintenance methods of the unwinding device as follows, hoping it can be useful.
For the unwinding device, once the unwinding head can not expand or contract, it can not be used to unwind normally, which is the most troublesome. The cause of this problem can mainly divided into two aspects. On the one hand, it is maybe because the unwinding device's hydraulic pressure tightens and the output circuit of the solenoid valve fails, so that the electromagnet can not operate normally. For this reason, it is necessary to check the circuit diagram and exam whether the output fuses of the solenoid valve are burned or not, if they are damaged, replace them in time.
On the other hand, it is because the oil pressure of the tightener of the unwinding head is so small that the tension mechanism wears, which makes the tension piece loose and can not function normally. It can be seen from this point that the hydraulic oil in the equipment must be replaced regularly to maintain a good consistency, and we should also strengthen the maintenance of the unwinding head to avoid the occurrence of the problem.