Uneven twisting of double-twisted yarn often occurs in the first few spindles or the last few spindles at the front of the machine. It is caused by the looseness and tight edges of the dragon belt. As for other Uneven twist occurs.
The first is to check whether there is any foreign matter stuck to the spindle wheel,
The second is to check whether there is accumulated waste on the brake,
The third is to check whether the spindle plate plug has accumulated flowers,
The fourth is to check whether the pneumatic brake valve is running in with the spindle wheel,
Five The uneven twist of individual spindles is caused by reasons such as the tension wheel being damaged and not functioning.
To reduce the uneven twisting of the double twisting machine, you should pay attention to the following points:
1. Ensure that the tension of the dragon belt is moderate
2. Remove the accumulation at the bottom of the spindle in time
3. Replace the dragon belt in time after wear
4. Monitor spindle speed and incorporate it into cycle management. Slow-speed spindles should be repaired or replaced in a timely manner
5. Ensure consistent bobbin quality properties and reduce uneven twist caused by bobbin quality
6. Try not to use plastic pipes. Plastic pipes have strong twist due to small friction coefficient and unsynchronized speed
7. Clean the machine and yarn channel.
Machine maintenance is an indispensable part of daily production. The quality of machine maintenance directly affects the quality of the product, so the content and standards of maintenance are very important.
The following are the parts of the two-for-one twisting machine that need to be checked frequently:
1 Spindle part
Check the flexibility of the spindle operation: ①. Remove the spindle; ②. Grasp the stationary plate and gently turn the rotating plate to check whether the rotation is flexible? Is there any abnormal noise? Is it lack of oil?
If abnormal spindles are found, handle them in the following order:
① Pull out the stationary disk (yarn pot binding agent) with force to separate the static disk and the wire clamping disk.
② Check whether there is waste wire wrapped around the spindle bearing. If so, remove it and check the flexibility of the bearing.
③ If there is no yarn winding, but the bearing is not flexible in rotation; or if the bearing is still not flexible in rotation after removing the yarn, you need to use a special clamp to remove the bearing and replace it with a new bearing.
④ Use a special clamp to hold the inner ring of the bearing and press the bearing in.
⑤ After putting the apron on the bearing again, press in the static plate.
If the spindle foot is short of oil, refill it immediately.
2 Dragon belt part
Check whether the dragon belt makes any abnormal noise, whether it moves up and down, whether it is wrapped with yarn, and whether it is stained with oil. If the dragon belt makes abnormal noise, it means that its operation is abnormal, or the yarn is wound. Check whether the tangential belt touches the lowest part of the guide. If it does, adjust the height of the tensioning guide pulley, starting from the side of the drive pulley. When twisting to the right, the synchronous belt rotates clockwise, so when adjusting, start checking from the driving belt pulley and check one week clockwise. The movement of the dragon belt up and down is also caused by the poor height position of the tensioning guide wheel. If there is yarn wrapped on the dragon belt, if it is a small amount, it can be processed when the machine is stopped. If it is a large amount, it needs to be processed immediately, otherwise the dragon belt will slip and make abnormal noise. When the tangential belt is seriously polluted, the spindle speed will decrease, the tangential belt will slip and make abnormal sounds. Therefore, the tangential belt should be removed and cleaned with neutral detergent.
3 Tensioning guide wheel
When the tangential belt is driven, the tensioning guide wheel passes through the outside of the tensioning guide wheel and the inside of the tangential belt. Its function is to maintain the tension of the dragon belt and ensure that the transmission does not slip. When adjusting the tensioning guide wheel, make sure that the tensioning guide wheel rotates flexibly. If the tensioning guide wheel does not rotate flexibly, the dragon belt will be worn. At the same time, ensure that the tensioning guide wheel transmission is stable. If the dragon belt is too high at this time, it needs to be adjusted downward. The steps are as follows: ① Loosen the fastening screw; ② Loosen the left lifting screw, and then unscrew the right lifting screw; ③ Tighten the fastening screw. Generally, the adjustment range of the nylon belt is very small. Try to keep the position of the nylon belt on each tensioner wheel the same.
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