01
Irregular operation, tighten the spindle nut enough, and then tap with gravity The spindle holder is used to correct the spindle level or the spindle to the ring center.
For DFG2 type, D12 series, and D32 series spindles, due to the large gap between the spindle outer ring and the rib hole, the design is based on the center of the steel ring as the positioning datum. It is not advisable to tighten the spindle nut sufficiently and then use gravity to knock the spindle holder to adjust the level of the spindle or the center of the spindle to the ring. Such an operation is laborious and not conducive to the adjustment of the spindle. The level is easy to move and the spindle is easily damaged. Rib or spindle surface.
Standardize the operation. When knocking the spindle holder, use a steel chisel and aim it at the side of the spindle holder at an angle of 20 to 25 degrees. Do not hit the spindle holder nut or below. Do not use a pipe to insert a wrench into the spindle holder to increase the strength arm to tighten the spindle nut. These practices can easily cause the spindle holder to crack or break and be damaged. The tightening torque of the spindle nut is 80N.m
02
Irregular operation, add spindle oil while inserting the spindle into the spindle holder.
D32 series spindles are widely used in cotton spinning mills. Due to their special structure, the spindle oil cannot easily enter the narrow inner cavity of the spindle holder (between the layers of the vibration-absorbing coil spring) when refueling. The gap is only 0.2mm). If the spindle is inserted into the spindle holder while adding oil, the spindle oil will overflow, leaving a great hidden danger for the spindle to be short of oil.
Standardize the operation, add spindle oil at a slow pace, 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 was not inserted after being pulled out In the original spindle holder or when replacing a bad spindle or a bad spindle holder, the entire set will not be replaced together.
After the spindle has been run, the upper and lower pairs of friction have been run-in. If it is not inserted into the original spindle holder or the complete set is not replaced together, it will wear again. In this way, it is easy to produce 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, not completely pulling out the spindle for operation 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.
Standardize the operation and refill the oil after completely pulling out the spindle.
05
Irregular operation, the spindle was pulled out during equipment maintenance After taking it out, place it upside down in the gap of the drafting part or place it diagonally on the machine platform.
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.
Standardize the 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 steel wire after pulling out the spindle lock up.
Standardize the operation. In order to facilitate the alignment of the horizontal spindle and the correction spindle to the center of the ring, the replacement of the traveler (especially when prying off the traveler) should be done 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, spindle cleaning and replacement (repair) After oiling and 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.
Standardize the operation. After cleaning the spindle and changing (replenishing) oil, raise the steel ring to the highest position before starting the machine. Both sides of the machine should be covered 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 splash on the surface of the ring plate, beam, spindle base, etc.
08
Irregular operation, the new spindle was not installed on the car Follow the cleaning and oil changing procedures, and wait for 2 to 3 months before cleaning and oil changing.
Standardize the operation. The wear of the new spindle is severe during the running-in period, which 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 (10-12kr/min) for 8 hours and then run it at normal spindle speed. 1 to 3 days, perform the first cleaning and oil change. After 7 days of operation, perform the second cleaning and oil change. After 15 to 20 days of operation, 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. It is wrong to clean and change the oil only once after 2 to 3 months of use.
09
Irregular operation, using spindles as tools (such as pry bar, punch).
Doing this will only cause the spindle to bend, damage the tip and be scrapped.
Standardize operations and 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.
Standardize the operation. To clean up oil spills or splashes, just wipe them with a cloth.
11
Irregular operation, the spindle has been used for many years and has never been done Check to correct for bends.
Standard operation: During the six months to one year of use of the spindle, the spindle should be inspected and corrected for bending. Before correcting the bending, check the condition of the spindle first. If there are grooves, bald spots, or scratches, they should be discarded and scrapped. To correct the bending of the spindle, place both ends of the spindle on a 60-degree 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 bend is out of tolerance, use a small pry bar to press down at the highest point of the bend until it meets the quality requirements. The alignment part should be careful to avoid contact with the spindle tip, the upper taper part of the spindle (that is, the contact point of the bobbin “eye”) 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, causing numbness and shaking of the head.
12
Irregular operation and no wiping of stains during equipment maintenance Insert the spindle into the spindle holder to remove the flying particles, waste wire and impurities adhering to the lower taper part of the spindle.
It is very important to clean the surface of the spindle and the inner cavity of the spindle holder. Any foreign matter entering the spindle holder will affect the lubrication effect, function and service life of the spindle.
Standardize the operation. Use a lint-free cloth to wipe away the flying particles, waste wire and impurities adhered to the lower cone part of the spindle, and then insert the spindle into the spindle holder.
13
Irregular operation, the equipment maintenance machine was parked overnight When the spindle is not inserted into the spindle holder, the bearing hole part of the spindle holder is not covered with cloth or plastic film.
For standard operation, if the machine needs to be parked overnight, when the spindle is not inserted into the spindle holder, a 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 and failure to clean the spindle plate hole for a long time The oil inside is flying and accumulating dirt.
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 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”.
Standardize the operation. The appropriate spindle belt tension should be around 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 .
Standardize the operation and carefully position the spindle reel rack at the height, front and rear, and left and right.
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 spindle arc groove. 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 lower part of the spindle plate, causing the spindle belt to impact the spindle vibration, and also cause the lower part of the spindle belt to be worn out prematurely; floating upward will cause the spindle to float upward. , causing abnormal wear on the spindle taper part, which is very harmful.
Front and rear positions: The spindle disk 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.
Left and right position: 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 of the spindle belt surrounding the four spindles as close to the same 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, you must pay great attention to it and perform the operation carefully and standardly. You cannot just turn the spindle on the spindle belt plate. one-sided approach.
The basic work of equipment must focus on standardization, implementation and perseverance to achieve actual results. Spindles are key spinning components. During use, irregular operations must be abandoned and standard operations must be followed to reduce end breaks, hairiness, yarn defects and material consumption, thereby achieving the goals of improving product quality, reducing costs and increasing efficiency. </p
