The spindle is one of the main components for twisting and winding on the spinning machine. The condition of the spindle is closely related to yarn quality, power consumption, environmental noise, etc. What are the common problems with spindles and how to solve them?
NO.1 Spindle tip wear
The wear of the spindle mainly occurs at the spindle tip and bearing gear. The wear of the spindle tip is characterized by grooves on the gourd head and lower cone. When the spindle bottom and the spindle tip are not on the same axis, the spindle rod moves and causes sliding wear of side contact. If the upper bearing is short of oil, the bearing gear will wear faster. Normal bearing gear wear reduces the accuracy, increases the fitting clearance, and intensifies the vibration. Generally, under certain load conditions, the degree of wear of the spindle depends on the material, hardness, geometric accuracy and roughness of the spindle rod, spindle bottom, and bearings. In addition, the quality of the bobbin also has a great influence on the vibration of the spindle, especially at high speeds.
The oil used in the spindle can not only lubricate the machine parts, but also dampen and eliminate shock, affecting power consumption. Lubricating the spindle regularly and ensuring sufficient oil can delay wear of the spindle tip. The recommended oil brands are total loss system oil L~AN10 national standard number GB443, bearing lubricating oil (spindle lubricating oil) L-FC10, L-FD10, L-FD10 is the best); lubricating oil should be in the original packaging product. The bobbin must be made by a manufacturer with good quality and stability; the correct use and maintenance of the spindle can slow down the wear of the spindle and extend the service life of the spindle.
NO.2 Breaking spindle rod
The doffing impact of the trolley, crack defects in the spindle rod itself, improper quenching of the material, etc. will all cause the spindle rod to break. Not using a trolley or reducing the number of times the trolley is used can reduce rod breakage. Since the occurrence of spindle rods with cracks in the material or the spindle rod itself is extremely low, it can generally be avoided as long as you select carefully before getting on the car.
NO.3 Broken spindle foot, oil leakage or oil leakage from the spindle foot
Incorrect installation method, not installing or knocking the spindle foot flange as required during alignment, or tightening the strength arm to tighten the nut will cause the spindle foot to break; the spindle foot caused by casting is loose in material, not fine in structure, or has cracks or cracks in itself. Defects such as pores and blisters may lead to broken spindle legs and oil leakage or seepage from the spindle legs.
Troubleshooting method: The spindle is installed in the rib hole of the spinning machine, which requires accurate positioning, reliable fastening, and difficulty in moving around. Install the spindle foot correctly, and the tightening torque should not be greater than 80 N·m; oil leakage and oil leakage from the spindle foot should be discovered and dealt with in time to prevent yarn contamination.
NO.4 Crooked Spindle
Use a spindle level to make a vertical level for each spindle on the dragon rib. In order to prevent horizontal changes, when doing the leveling, each fastening bolt must be tightened to 70%, and the leveling gasket must use a thin copper sheet to prevent Deformation. After the level of each place is qualified, all fastening bolts should be 100% tightened; at the same time, the spinning machine components in use should be regularly calibrated (or steel rings) for concentricity.
NO.5 The pole plate moves up
Generally, the needle roller falls off due to lack of oil, or the bearing wear causes the gap to become larger. At this time, the spindle should be properly maintained and maintained to ensure sufficient oil.
NO.6 Rod plate sinks
When the spindle was running together in the early stage, the tiny abrasive particles produced by wear were not removed in time, causing the cone-type spindle bottom to wear or be drilled through; and the flat-bottom type gasket to fall off. Do not drive at high speed during the running-in period of the new spindle; the oil change and cleaning procedures for the new spindle should be carefully implemented, and the abrasive particles in the lubricating oil should be removed in time.
There are two main factors that affect the operation of the spindle curve: one is the control part, whether the spindle speed curve is confirmed to be written into the program. Whether there is a communication failure between the PLC and the analog module, and whether the analog output changes synchronously with the setting curve. The other is the output part, whether the system programs of the frequency converter are running normally and whether the hardware is damaged. Whether the minimum operating frequency is set too high or whether other parameter settings match.
NO.7 Big head shake
The bearing seat is deformed or broken due to external force of the rod disc; early wear of the rod disc.
Troubleshooting methods: Use high-quality bobbin; maintain and maintain the spindle properly; ensure bearing lubrication.
NO.8 The spindle shakes its head
If you find an oscillating spindle, you can check it in the following order: Check to see if the oil level in the spindle holder is normal; pull to see if the spindle belt is too tight, and whether the spindle rod-disk joint is floating up from the spindle holder; listen to Listen to see if there is any abnormal noise when the spindle is running, causing the spindle to jump violently up and down (generally caused by dry friction caused by severe lack of oil); take a look to see if the spindle belt is in the middle of the spindle plate, and whether the spindle belt is rubbing against the upper and lower sides of the spindle plate. In addition, the reasons causing the spindle to shake include: the spindle rod is bent, the spindle plate is eccentric, the lower cone or the spindle tip is worn; the upper bearing cage of the spindle is worn; the upper bearing seat is loose and falls, causing the lower edge of the spindle rod plate to rub against the spindle seat flange surface; the connection between the spindle rod and the spindle plate is loose or the upper cone of the spindle is not in close contact with the “sky eye” of the bobbin; debris falls into the inner cavity of the spindle holder; the spindle belt slips out of the spindle plate, causing the spindle to jump; the spindle is wrapped with yarn residue ; There are errors in the coaxiality of the upper and lower supports, etc.
NO.9 The tablet loses elasticity
The elastic lower support spindle bladder is mainly used for YD4000 series spindles. The loss of elasticity of the spindle bladder is mainly caused by poor oil quality and dirt.
Troubleshooting method: Use high-quality lubricating oil and check the oil level regularly.temperature and replenish oil regularly.
NO.10 Spindle vibration
When the spindle reel frame is in the vertical position, 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 rod plate. 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 and sink, and rub the lower part of the spindle rod 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; the spindle belt will float, causing the spindle to rise. Jumping, the napping spindle belt is damaged due to the upper part, which not only affects the quality of the yarn and increases the breakage, but also causes abnormal wear of the lower taper part of the spindle, resulting in damage to the spindle, which is extremely harmful.
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