Troubleshooting between the automatic paper machine and the tension control

It is judged whether the tension of the zero-speed automatic paper machine is normal, and it is mainly observed whether the fluctuation of the floating roller is obvious. During the printing process, the fluctuation of the floating roller is small, and the output voltage of the tension controller is relatively stable, indicating that the tension of the zero-speed automatic paper machine is stable, otherwise the tension control of the zero-speed automatic paper machine is faulty. The faults related to tension control are mainly manifested in the following aspects.

1. The tension is too small during the printing process, and the tension regulating valve is adjusted to the maximum and still has no effect.

To eliminate this failure, the following aspects should be checked.

(1) Check if the zero position of the tension potentiometer is correct.

(2) Check if the maximum output voltage of the tension controller reaches 9.5V.

(3) Check the brake lining for mechanical failure.

2. When printing large paper rolls, the tension floating roller fluctuates up and down

(1) If this happens only when the upper or lower roll is running, it is caused by a mechanical failure of the upper or lower roll brake lining. The upper paper roll, the lower paper roll brake solenoid, and the brake lining should be replaced.

(2) If this occurs during both the upper and lower rolls, the tension potential should be checked first.

Whether the zero position of the device is correct, and then check whether there is mechanical wear on the upper and lower roll brake linings.

3. When the paper roll is not much, the tension floating roller fluctuates up and down.

This fault is generally caused by the brake solenoid and the brake lining. If the brake lining is not resolved after cleaning, the brake solenoid or brake lining must be replaced.