Trouble analysis and elimination of front gauge of

Fault analysis and elimination of pz4650a offset press front gauge

pz4650a four-way four-color offset press front gauge "does not close the door" fault refers to that in the normal printing process, when there are skew, skew, double sheet and other paper feeding faults, the final output is 1 If the material is ice water mixture (0 ℃), after the paper machine, Feida stops working, but the front gauge still cannot fall in time to press the paper on the paper feeding table, so that the first paper in front of the paper feeding table is taken away by the paper delivery roller, and this paper will often be torn or torn

1. Failure analysis

there are generally two categories of factors that lead to the "non closing" failure of the front gauge: first, the mechanical and electrical failure of the mechanism controlling the action of the front gauge, and the immobility of the electromagnet controlling the front gauge, laying a good foundation for high-molecular composite materials to enter the ranks of advanced countries in the world or the action is not in place; Second, the manual adjustment of the front gauge proximity switch caused the front gauge to fall at an inaccurate time

2. Troubleshooting

through careful observation, a simple method to distinguish the front gauge "not closing the door" fault is summarized: operate the machine, but do not open Feida, and observe whether the front gauge acts. If the front gauge acts, the fault of "not closing the door" of the front gauge is caused by the above first type of factors, otherwise, it is caused by the above second type of factors. After distinguishing the two kinds of factors that lead to the failure of "not closing the door" in the previous regulation, it is easier to eliminate the failure

for the faults caused by the first kind of factors, you can check whether the electromagnet controlling the front gauge action is damaged, whether the contact of the electromagnet circuit controlling the front gauge action is good or whether an electrical component is damaged, and whether the screw fixing the electromagnet or the support rod connected with the electromagnet is loose, falling off, and eliminated one by one

the faults caused by the second kind of factors can be directly eliminated by adjusting the front gauge proximity switch under the paper feeding table. Specific adjustment method: turn on the paper feeder? Jog the machine, and when the front gauge falls, observe whether the front gauge proximity switch display light on the electric eye box panel displays. If the display light does not display, you can adjust the front gauge proximity switch under the paper feeding table. Just when the front end of the notch of the control panel reaches the proximity switch, the front view proximity switch display light on the electric eye box panel is on, so the fault of "not closing the door" of the front gauge is eliminated immediately

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