Listening to voice faults

As we all know, failure is one of the unfavorable factors that affect production, and severely affects the quality of printed products. In order to reduce failures and improve work efficiency, in addition to normal maintenance and maintenance of the equipment, the operator must have a certain ability to distinguish. Some faults can be identified by sound, and the position, degree, and cause of the fault can be judged by abnormal sounds so that timely measures can be taken and handled accordingly. Here are some examples of the common fault sounds:

1. The paper nozzle makes a slipping "click"

This is caused by the serious wear of the suction nozzle during long-term use and the smooth suction surface, or the air path is not smooth, and the suction is too small. It may be because the paper is thick, slippery, or sticky. According to the situation. Generally have the following methods: 1 rubber sleeve on the nozzle; 2 the suction surface with a saw blade or sandpaper like a scratch, increase the friction; 3 cleaning Feida, sparse ventilation; 4 remove the air pump fouling; 5 Paper related processing.

2. The suction nozzles of both sides of the paper suction nozzles appear

May be caused by the following reasons: First, improper adjustment, suction hole is not correct; Second, the piston fixed screw automatically moves out, resulting in two nozzle angle changes, and paper is not parallel; Third, the air path is blocked, or wind pump air volume small. Sometimes this can happen if the paper is not blown by the blower or the paper is pressed by the presser foot or the paper is blocked by the brush. According to the situation.

3. The drum part emits "drums" during printing

This sound may be caused by loose plate screws on the plate version. This sound is often heard when the two pull screws in the middle of the clamp loosen. Stop tightening the screws.

4. The upper part of the machine makes a "click" sound, the faster the sound, the louder the sound

This is due to the fact that the ink is too viscous, sticky paper powder, and too much paper, which accumulate on the ink roller. Clean the ink roller and wipe the paper with the cloth.

5. Dispenser suction nozzle emits empty "Judg" sound

This is purely a sucker hole. A small screwdriver can be inserted into the suction hole, and the suction hole can be straightened to make it consistent with the nozzle connecting rod.

6. The motor vibrates

Once this sound appears, it indicates that the motor shaft and rake are seriously worn. Should stop immediately, find an electrician and maintenance personnel to deal with.

7. The “click” of the knocking shield inside the shroud

This is a resonance phenomenon that occurs when the machine is in operation. This causes the swinging springs of the oscillating teeth to swing violently. When the shroud is adjusted, the speed can be adjusted appropriately and the sound disappears.

8. Tooth squeaking at the place of the teeth

If this sound occurs continuously after power on, the machine can be shut down and then try to open. This sound occurs and the tooth does not pick up the paper, causing the paper inertia to enter the drum. This is a problem with the tilt shaft. Stopped by hand to move the pendulum shaft head feels shaking, indicating that the pendulum shaft wear is serious, there is a gap between the sleeve. Replace and repair it.

9. Electromagnetic iron absorption has a continuous "click" sound, but the paper stack does not rise

There are many reasons for this, such as electrical problems, disconnection of the electromagnetic iron core, or turning up of a mechanical part, etc., which can cause this malfunction and deal with symptoms.

10. Feida's part suddenly appeared a harsh "click" sound.

This sound is most easily discernible, that is, the mouthpiece is disconnected from the blowpipe, and the operator simply inserts the mouthpiece into the blowpipe.

11. Kai Fei Da Electromagnet does not absorb sound

Stack the paper and try to open Feida. If the above situation occurs again, it means that the stroke switch on the presser foot is broken and you can replace it. If it is a bad contact, handle it separately.

12. When the operation is on, the motor screams and the machine does not turn

Explain that the brakes are working. You can reverse the point of the machine, and then move it and it will be normal.