Printing machine stepping and not feeding paper is a common fault in printing machine work. What is the reason for the printing machine to step and not feed paper, and how to solve it?
First of all, we must first understand the working principle of the stepper motor of the printing machine. Stepper motor is a kind of induction motor. Its working principle is to use electronic circuit to transform direct current into time-sharing power supply. Multi-phase sequential control current. Use this current to supply power to stepper motor, and stepper motor can work normally. The driver is a time-sharing power supply for the stepper motor, a multi-phase sequential controller. The stepper motor in the printing machine controls the paper feeding. Once the stepper motor fails, it may cause problems with the paper feeding of the printing machine. When the printing machine is stepping and not feeding paper, we can proceed from these three points to check and troubleshoot.
1. The stepper motor is faulty. The entire paper feeding process of the printing machine is driven by a stepping motor. When the stepping motor fails, such as a damaged main board, a sensor failure, etc., the printing machine will have the problem of stepping and not feeding the paper. At this time, the motor needs to be inspected, maintained or replaced.
2. The paper feeding system of the printing machine is abnormal. Under normal circumstances, when the paper feeding platform of the printing machine has debris blocking the paper, the printing machine will not feed the paper; in addition, when the paper feeder of the printing machine fails and does not work, it will also cause the printing machine to feed abnormally. . At this point, it is necessary to check the lower paper feeding system, clean up abnormal links and replace faulty parts.
3. The pinch roller problem. There is a component in the printing machine called "pressing wheel", which is used to ensure that the printing machine is smooth and not skewed. However, when the pressure roller does not rotate or the pressure is too tight, the printing machine will not run smoothly, or even the paper will not feed. At this point, test to see if there is any problem with the pressure roller, and adjust or replace it in time.
