The spindle is one of the main parts for twisting and winding on the spinning machine. Irregular operation of the spindle has a direct impact on the production capacity of the corresponding process, especially the spinning spindle. Here are 16 common cases of irregular operations.
01
Irregular operation : After tightening the spindle holder nut, use gravity to knock the spindle holder to correct the spindle level or the spindle to the center of the ring.
Standard operation: When tapping the spindle holder, use a steel chisel and aim it at the side of the spindle holder at an angle of 20° to 25°. Do not tap the spindle holder nut or below. Do not use a pipe to insert a wrench into the spindle base to increase the strength arm to tighten the spindle nut. These practices can easily cause the spindle base to crack or break and be damaged. The tightening torque of the spindle nut is 80N·m.
02
Irregular operation : Insert the spindle into the spindle holder while adding spindle oil.
Standard operation: When adding spindle oil, the rhythm should be slow, don’t do it too hastily, and don’t miss the oil! Leaking oil will definitely burn the spindle. After adding the spindle oil, wait 1 hour before replenishing the oil, and then insert the spindle into the spindle holder.
03
Irregular operation : The spindle is not inserted into the original spindle holder after being pulled out, or when replacing a bad spindle or bad spindle holder, the entire set is not replaced together.
After the spindle has been run, the upper and lower pairs of friction pairs have been run-in. If they are not inserted into the original spindle holder or the complete set is not replaced together, they will have to be worn again, which will easily cause spindle numbness. If you shake your hand or shake your head, the vibration range will be large, causing new wear and tear.
04
Irregular operation : Do not completely pull out the spindle to replenish oil.
If the spindle is not completely pulled out for oil replenishment, the oil cannot be directly added to the rollers of the upper bearing, and good oil replenishment cannot be achieved. If you operate like this for a long time, the spindle rod-disk combination may easily bend and the upper bearing may be damaged.
05
Irregular operation : During equipment maintenance, pull out the spindle and place it upside down in the gap of the drafting part or place it diagonally on the machine table.
If the spindle is placed upside down or tilted on the machine table, the spindle oil attached to the lower cone part of the spindle will flow back and accumulate in the spindle plate hole. When the spindle is inserted into the spindle holder, the spindle oil will flow to the surface of the spindle holder or dragon ribs, or drip on the ground, causing oil to fly and pollute the ground when driving, and even produce oily yarn.
Standard operation: After the spindle is pulled out, it should be placed vertically on the special spindle car (with an oil storage tray underneath). Before the spindle is inserted into the spindle holder, the lower cone part of the spindle should be wiped with a lint-free cloth to remove the adhered flying particles, waste yarn and impurities.
06
Irregular operation : Replace the traveler after pulling out the spindle.
Standard operation: In order to facilitate the leveling of the spindle and the correction of the spindle to the center of the ring, the replacement of the traveler (especially when prying off the traveler) should be carried out before the spindle is pulled out. Prevent the wire ring from falling into the spindle holder to prevent the spindle from being worn after driving.
07
Irregular operation : After cleaning the spindle and changing (replenishing) oil before starting the machine, the ring plate should not be raised to the highest position, and there is no need to cover both sides of the machine with cloth.
Standard operation: After cleaning the spindle and changing (replenishing) the oil, before starting the machine, raise the steel ring to the highest position, and cover both sides of the machine with cloth to prevent it from flying after driving. Oil (mist) affects adjacent machines to produce oily yarn. Stop the machine after driving for 20 minutes, and then use a clean cloth to wipe away the oil stains on the surface of the ring plate, beams, spindle base, etc.
08
Irregular operation : The new spindle was not cleaned and changed according to the cleaning and oil changing procedures when it was put into the car. Please wait for 2 to 3 months before cleaning and changing the oil.
Standard operation: The new spindle wears violently during the running-in period, and it will inevitably produce tiny particles. If these tiny particles are not removed in time, it will inevitably aggravate the wear and tear of the spindle. wear and tear. The following work should be done according to the new spindle cleaning oil procedure.
Add oil 1 hour after the initial refueling, check the oil level, and lubricate the upper bearing roller. After inserting the spindle, run it at low speed (10kr/min~12kr/min) for 8 hours and then the spindle will be normal. After running for 1d to 3d at high speed, perform the first cleaning and oil change. After 7d of operation, perform the second cleaning and oil change. After running for 15d to 20d, perform the third cleaning and oil change, and then switch to the normal cleaning and oil change cycle.
After three times of timely and effective initial maintenance, cleaning and oil change, the abrasive particles produced by the initial operation of the spindle can be basically removed, minimizing the harm of initial wear and ensuring that the new spindle is stable and smooth. A good transition to the stable period and normal wear and tear can effectively extend the service life of the spindle and lay the foundation for normal spindle maintenance in the future.
09
Irregular operation : Use the spindle as a tool (such as a pry bar, punch). This approach will only cause the spindle to bend, damage the tip and be scrapped.
Standardize operations: Develop good working habits.
10
Irregular operation : Use talcum powder to absorb oil spills and splashes on the surface of dragon ribs, spindle holders and other parts.
This is an extremely wrong approach! Using talcum powder to absorb oil spills or splashes can be extremely harmful. The air vortex generated when the spindle is adjusting its rotation can easily bring talcum powder into the spindle holder (which is equivalent to adding abrasive), resulting in serious contamination of the spindle oil, accelerated variation of the physical and chemical properties of the spindle oil, increased spindle vibration, and serious wear and tear of the spindle.
Standard operation: To clean up oil spills or splashes, just wipe them with a cloth.
11
���Standard operation: The spindle has been used for many years and has never been inspected or corrected for bending.
Standard operation: Use the spindle for 0.5a~1a, and check and correct the bending of the spindle. Before correcting the bending, check the condition of the spindle first. If there are grooves, bald spots, or scratches, they should be scrapped. To correct the bending of the spindle, place both ends of the spindle on a 60° V-shaped iron on a flat plate (one end has a backer for positioning) and use a dial indicator to check and measure.
If the bending is out of tolerance, use a small pry bar to press down at the highest point of the bending until it meets the quality requirements. Pay attention to the alignment part to avoid contact with the spindle tip, the upper taper part of the spindle and the upper bearing. When the spindle plate is eccentric and needs to be corrected, do not pry the spindle plate hole, otherwise it will easily cause the combination of the spindle and the spindle plate to loosen, resulting in numb hands or shaking of the head.
12
Irregular operation : During equipment maintenance, insert the spindle into the spindle holder without wiping away the flying particles, waste wire, and impurities adhering to the lower taper part of the spindle.
Standard operation: Use a lint-free cloth to wipe away the flying particles, waste fibers and impurities adhered to the lower cone part of the spindle, and then insert the spindle into the spindle holder.
13
Irregular operation : When the equipment maintenance machine is parked overnight and the spindle is not inserted into the spindle holder, the bearing hole of the spindle holder is not covered with cloth or plastic film.
Standard operation: For machines that need to be parked overnight, when the spindle is not inserted into the spindle holder, special cloth or plastic film should be used to cover the bearing hole of the spindle holder to prevent dust, flying flowers, and debris. Objects falling into the spindle holder will cause the oil quality to change, affect the lubrication effect and even wear the spindle; at the same time, it can also reduce or prevent yarn defects caused by flying particles flying to adjacent machines during cleaning work.
14
Irregular operation : The oil dust and dirt accumulated in the hole of the spindle plate are not removed for a long time.
The existence of these oil flying particles and fouling will undoubtedly increase the rotational resistance of the spindle, causing the spindle speed to decrease, the twist unevenness to increase, the yarn strength to decrease, and the spindle difference to increase. Quality variation.
Standard operation: It must be combined with the correction and bending work of the spindle to completely remove the oil dust and scale in the spindle plate hole.
15
Irregular operation : The spindle belt tension is inconsistent.
The belt tension of the entire car should be consistent. If the tension of the spindle belt is too high, it will increase the radial load on the bearing on the spindle, which will easily increase the wear of the spindle and shorten the service life of the spindle. If the tension of the spindle belt is too small, it will easily stall, resulting in a large difference in spindle speed and high uneven twist rate of the yarn. There should be no “dead ingot belt”.
Standard operation: The appropriate spindle belt tension should be about 8N. You can use a spring to hook the spindle belt (in the middle of the two spindles) and pull the spindle belt straight. When the spindle tape frame just swings forward, check the red reading on the spring scale, which is the tension of the spindle tape.
16
Irregular operation : The working position of the spindle belt is abnormal.
Standard operation: Carefully position the spindle reel rack at the height, front and rear, and left and right.
a) High and low position: When the spindle reel frame is in a vertical state, the top surface of the spindle reel should be on the same horizontal plane as the center line of the arc groove of the spindle reel. If the horizontal position of the spindle belt is too high or too low, it will cause the spindle belt to be out of center; it will sink and rub the bottom of the spindle plate, causing the spindle belt to impact the spindle and vibrate, and also cause the lower part of the spindle belt to wear out prematurely; floating will cause the spindle to float upward. , causing abnormal wear on the spindle taper part, which is very harmful.
b) Front and rear positions: The spindle reel frame should not touch any machine parts after being pushed forward and backward. The front and back swings are natural and flexible without tight rolling, and the swing angles are basically the same.
c) Left and right positions: The spindle belt should not rub against the spindle reel bracket or the side of the spindle reel during rotation. In order to make the arc surrounding the four spindles by the spindle belt as close as possible to reduce uneven twist, the position of the spindle belt tray should be as close to the left as possible, so as to not touch the spindle belt when driving.
When adjusting the spindle belt and the rotating part of the spindle, extreme attention must be paid to it, and the operation must be carried out carefully and standardizedly.
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