Kind of irregular operation of the spindle, have you ever committed?

　Preface: Spindle is one of the main components for twisting and winding on spinning machine, which is a combination of slender rotary shaft with two points of support. Spindles are found on roving machines, spinning machines and twisting machines.

　　As we all know, it is customary to express the equipment size and production capacity of a spinning mill in terms of the number of spindles, and irregular spindle operation has a direct impact on the production capacity of the corresponding process, very much so for spinning spindles.

　　Example 1

　　Irregular operation, after tightening the spindle seat nut, then hitting the spindle seat by gravity to correct the spindle level or spindle to steel collar center.

　　DFG2 type, D12 series, D32 series spindle, due to the large gap between the outer ring of the spindle holder and the hole of the dragon bar, is designed to take the center of the steel collar as the positioning reference, it is not suitable to tighten the spindle holder nut enough and then use gravity to knock the spindle holder to correct the level of the spindle or the center of the spindle to the steel collar, such operation is not only laborious but also not conducive to the adjustment of the spindle in the center, the level is easy to move, and also simple to damage the surface of the dragon bar or the spindle holder.

　　Standard operation: When knocking the spindle seat, apply steel chisel, align the side of the spindle seat to knock 20 degrees to 25 degrees, and do not knock the nut of the spindle seat and the following parts, and do not use the pipe set into the wrench to increase the force arm to tighten the nut of the spindle seat, these practices are very likely to cause damage to the spindle seat by hidden crack or fracture. The tightening torque of the spindle seat nut is 80N.m.

　　Example 2

　　The spindle is inserted into the spindle holder while adding spindle oil.

　　D32 series spindle is used a lot in cotton textile factory, because of its structure, it is not easy for oil to enter the narrow cavity of spindle seat (the gap between the layers of vibration-absorbing coil spring is only 0.2mm), if the spindle is inserted into the spindle seat while adding oil, it will make the oil overflow and leave a great hidden danger to the spindle lacking oil.

　　Standard operation: Adding spindle oil should be done slowly, not too fast, and not to miss the oil! Leakage of oil will surely burn out the spindle. Wait for 1h to refill oil after adding spindle oil, and then insert the spindle into the spindle holder.

　　Example 3

　　When the spindle is pulled out, it is not inserted into the original spindle holder, or when the bad spindle or bad spindle holder is replaced, the whole set is not replaced together.

　　If the spindle is not inserted into the original spindle seat or not replaced with the whole set, the spindle will be worn out again after the operation.

　　Example 4

　　Irregular operation, not completely pulling out the spindle to make up oil.

　　If the spindle is not completely pulled out for oiling, the oil cannot be directly added to the roller of the upper bearing, so it cannot play a good role in oiling. If this operation is carried out for a long time, it is easy to bend the spindle rod disc joint and damage the upper bearing.

　　Standard operation: oiling is carried out after the spindle is completely pulled out.

　　Example 5

　　If the spindle is pulled out and placed upside down in the gap of the drawing part or placed diagonally on the machine during maintenance, the spindle will be damaged.

　　If the spindle is placed upside down or tilted on the machine, the spindle oil attached to the lower cone of the spindle will flow backwards and accumulate in the hole of the spindle plate. When the spindle is inserted into the spindle holder, the spindle oil will flow onto the surface of the spindle holder or the dragon bar, or drip on the ground, causing the ground to be polluted by the driving flying oil and even producing oiled yarn.

　　Standard operation: After the spindle is pulled out, it should be placed vertically on the special car for spindle (with oil storage tray under it). Before inserting the spindle into the spindle holder, the lower cone of the spindle should be wiped with a lint-free cloth to clean the adhering flecks, filaments and impurities.

　　Example 6

　　Not standard operation, the spindle is pulled out and the wire ring is changed.

　　Standard operation: To facilitate the level of the spindle and correct the spindle to the center of the steel collar, exchange (especially when prying down the wire ring) the wire ring should be carried out before the spindle is pulled out, in order to prevent the wire ring from falling into the spindle seat after driving wear spindle.

　　Example 7

　　Irregular operation: Before driving after spindle cleaning and oil change, the steel collar plate is not raised to a high position, and both sides of the machine are not covered with cloth.

　　Standard operation: Before driving after spindle cleaning and oil change, the steel collar is raised to a high position, and both sides of the machine are covered with cloth to prevent the flying oil (mist) from affecting the neighboring machines after driving. Stop the machine after 20min of driving, and then wipe off the oil splash on the surface of the steel collar plate, dragon bar and spindle seat with clean cloth.

　　Example 8

　　Irregular operation: The new spindle is not cleaned and oiled according to the cleaning and oiling procedure when it is put on the machine, and then cleaned and oiled after 2~3 months of use.

　　Standard operation: The wear of new spindle is intense during the break-in period, and it will definitely produce tiny particles, which will definitely intensify the wear of spindle if not removed in time. The following work should be done according to the new spindle cleaning oil procedure.

　　After 1h of initial refueling, check the oil level, lubricate the upper bearing roller, insert the spindle and run at low speed (10-12kr/min) for 8h, then run at normal spindle speed for 1~3 days, carry out the second cleaning and oil change, after 7 days of running, carry out the second cleaning and oil change; after 15~20 days of running, carry out the third cleaning and oil change, then turn to the normal cleaning and oil change cycle.

　　After 3 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, so that the hazard of initial wear can be reduced to a low level and the new spindle can be smoothly and well transitioned to the stable period into the normal wear state, which can effectively prolong the service life of the spindle and lay the foundation for the normal spindle maintenance work in the future. It is not right to do an oil change only after 2~3 months of use.

　　Example 9

　　The spindle is used as a tool (e.g. pry bar, punch) without standard operation.

　　This will only cause the spindle bending spindle tip damage and scrap.

　　Standardized operation: good working habits should be developed.

　　Example 10

　　Using talcum powder to absorb oil spills and oil splashes on the surface of the machine parts such as the spindle bar and spindle seat without standard operation.

　　This is an extremely wrong practice! Using talcum powder to absorb oil spill or oil splash is extremely harmful. The air vortex generated by the spindle when adjusting the rotation will easily bring talc into the spindle seat (equal to adding abrasive), resulting in serious contamination of spindle oil, accelerated variation of physical and chemical properties of spindle oil, increased vibration of spindle, and severe wear of spindle.

　　Standard operation: the removal of oil spill or oil splash, available wipe cloth wipe clean.

　　Example 11

　　Not standard operation, the spindle is used for many years without checking and correcting the bending.

　　Standard operation: check and correct the bending of the spindle during the period from half year to one year of use. Before correcting the bending, check the state of the spindle, if there is groove, baldness or wear out, it should be scrapped. To correct the bending of the spindle, put the two ends of the spindle on the flat plate of 60 degrees on the V-iron (one end has the positioning of the support) and check the measurement with the percentage table.

　　If the bending exceeds the difference, use a small pry bar in the high point of the bending force downward pressure, until it meets the quality requirements. The straightening part should be avoided and the spindle tip, the cone part on the spindle (i.e. the contact of the "eye of heaven" of the tube) and the contact part of the upper bearing. If the spindle disc is eccentric and needs to be corrected, do not pry the hole of the spindle disc, otherwise it will easily cause the loosening of the combination of the spindle and the spindle disc and produce a shaking head.

　　Example 12

　　If the operation is not standardized, the spindle is inserted into the spindle holder without wiping the flecks, filaments and impurities adhering to the lower cone of the spindle during maintenance.

　　It is particularly important to clean the spindle surface and the cavity of the spindle holder. Any foreign matter entering the spindle holder will affect the lubrication effect and the function and service life of the spindle.

　　Standard operation: wipe off the splinters, filaments and impurities adhering to the lower cone part of the spindle with a lint-free cloth and insert the spindle into the spindle holder.

　　Example 13

　　Irregular operation, when the spindle is not inserted into the spindle holder when the machine is stopped overnight for maintenance, the bearing hole of the spindle holder is not covered with a cloth or plastic film.

　　Standard operation: For machines that need to stop 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 from falling into the spindle holder and affecting the lubrication effect and even wearing out the spindle; at the same time, it can also reduce or prevent the flying flowers from flying to the neighboring machines to produce yarn defects when doing cleaning work.

　　Example 14

　　The oil fleck accumulation in the hole of the spindle disc is not cleared for a long time due to irregular operation.

　　The presence of these oil fleck accumulations will undoubtedly increase the spindle rotation resistance, causing a decrease in spindle speed, an increase in twist unevenness, a decrease in yarn strength and quality variation due to large spindle differences.

　　Standard operation: The oil fleck accumulation in the spindle bore must be thoroughly removed in combination with the spindle correction bending work.

　　Example 15

　　Inconsistent spindle tension due to irregular operation.

　　The tension of the spindle belt should be the same for the whole car. If the spindle tension is too large, it will aggravate the radial load of the bearing on the spindle and make the spindle more worn and shorten the service life of the spindle; if the spindle tension is too small, it will simply lose speed and cause large difference of spindle speed and high rate of uneven yarn twist. There should be no "dead spindle".

　　Standard operation: The suitable spindle tension should be about 8N. Use the spring to hook the spindle belt (the middle part of the two spindles) and pull the spindle belt straightly. When the spindle belt tray frame is just swinging forward, check the red reading on the spring scale, that is, the tension of the spindle belt.

　　Example 16

　　If the operation is not standardized, the working position of spindle belt is not normal.

　　Standard operation: Position the spindle belt tray frame carefully in high and low, front and back, left and right.

　　High and low position: When the spindle plate frame is vertical, the top surface of the spindle plate should be on the same level with the center line of the circular groove of the spindle plate. If the horizontal position of the spindle belt is too high or too low, it will cause the spindle belt not to be centered; if it sinks, it will rub the lower side of the spindle disk and cause the spindle belt to impact the vibration of the spindle, which will also make the lower side of the spindle belt wear out prematurely; if it floats, it will cause the spindle to float upward, which will cause the spindle cone part to produce abnormal wear and tear, which is very harmful.

　　Front and rear position: the spindle belt disk frame should not touch any machine parts after pushing forward and backward, and the front and rear swing is natural and sensitive without tight rolling, and the swing angle is basically the same.

　　Left and right position: the spindle belt should not rub with the spindle belt tray bracket or the side of the spindle belt tray during the rotation. In order to make the spindle belt close to the same amount of the 4 spindles, so as to reduce the unevenness of twist, the position of the spindle belt tray frame should be to the left, so as not to touch the spindle belt when driving.

　　When adjusting the spindle belt and spindle rotating part of the work, we must pay great attention to it and make sure to operate it carefully and standardize the operation, not just the one-sided approach that the spindle belt can be done by rotating the spindle on the spindle belt plate.

　　The basic work of the equipment is to focus on the standard, valuable in the implementation, persistent, only to see effective. Spindle is the key spinning parts, in the use of the process to shake off the irregular operation, according to the standard operation to do, in order to achieve the reduction of broken head, feather, yarn defects and material consumption, so as to achieve the purpose of improving product quality, reducing costs and increasing efficiency.