What are the factors that affect the hairiness of winding yarn?

What are the factors that affect the hairiness of winding yarn

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The winding process is to wind a small package of bobbin through a coning machine and under a certain tension into a large package. When the mechanical condition of the winding machine is poor, the process is imperfect, and the operation is poor, the spinning The number of hairiness of the yarn after being sorted by the winding machine will not decrease, but will increase. The author discussed the influence of factors such as the mechanical state of the winding machine, process parameters, workshop temperature and humidity, and new winding machine winding equipment on the hairiness of the winding yarn, in order to provide affirmation for enterprises to reduce the hairiness of the winding yarn. reference basis.

The influence of the structure and mechanical state of the winding machine on winding hairiness

The influence of groove type on winding hairiness
At present, the commonly used trough drums in domestic winding machines include metal trough drums and bakelite trough drums: ① Bakelite trough drums have poor wear resistance. During use, the surface is easily grooved and rubs the spinning yarn, resulting in The number of hairiness increases; when spinning yarn containing chemical fiber components, it is easy to generate a large amount of static electricity, resulting in an increase in hairiness, and the impact on pure wool chemical fiber yarn is even more prominent. ② The surface of the metal groove barrel has been specially treated and has good wear resistance. The longer the service period, the smoother the surface. It also has the function of removing static electricity, which has a certain effect on reducing winding hairiness. The newly emerged superplastic alloy grooved drum can significantly reduce winding hairiness because it adopts new metal materials, which are high in strength, light in weight, and have excellent electrical conductivity. The static electricity and frictional heat generated during winding can be effectively released. , which is beneficial to reducing the hairiness of spinning yarns.
​The influence of the cleanliness of winding channel components on winding hairiness
　The winding channel of domestic winding machines such as 1332M and GA014MD has a tension frame S plate, a magnetic column, a yarn clearer detection head, a yarn guide sleeve, a powerful bowl and a probe element.
The tension bowl can maintain stable rotation during normal spinning to reduce the resistance to the spinning yarn, which is beneficial to reducing the hairiness of the winding spinning yarn. If the inner hole of the tension bowl is worn enlarged or skewed, it will cause the spinning The tension bowl remains stationary during line operation, causing greater frictional resistance to the spinning yarn, resulting in an increase in hairiness of the winding yarn. Therefore, the wear of the tension bowl must be strictly checked during production to ensure its smooth rotation, which is beneficial to reducing damage to the yarn. The unfavorable friction of spinning yarn reduces the hairiness of spinning yarn.
The self-stop box probe on the traditional winding machine has poor wear resistance. When the spinning yarn is running, the surface is easily grooved, causing white lines to run and increasing the hairiness of the winding yarn. The use of alumina probes with excellent wear resistance can reduce the friction resistance of spinning yarns and reduce the hairiness of spinning yarns.
The self-stop device of the 1332M type winding machine also has a certain impact on the hairiness of the spinning yarn. The normal self-stop device will jump up immediately when the spinning yarn is broken, and break away from the high-speed running trough drum, thus avoiding the risk of the package yarn and the trough. Barrel friction. If the self-stop device fails and the spinning yarn breaks, the package yarn cannot jump up immediately and keeps running on the high-speed drum, which seriously wears the spinning yarn on the surface of the package yarn and greatly increases the hairiness of the winding yarn. Therefore, it is necessary to Ensure the sensitivity of the auto-stop device and reduce winding hairiness.
The amount of oil in the automatic stop device box of the winding machine controls the falling speed of the package. When the amount of oil is sufficient, the package will fall smoothly and maintain a certain buffer. This will reduce the friction between the package and the grooved drum and make the winding The hairiness decreases. When the self-stop box is short of oil, the descending speed of the package yarn will be accelerated, causing the friction between the package yarn and the grooved barrel to increase, causing serious damage to the spinning yarn and causing an increase in winding hairiness; therefore, it is necessary to ensure The amount of oil is sufficient to reduce winding hairiness.
When the winding machine adjusts the angle of the bobbin, it is required that the tapered tube and the grooved tube are in close contact to ensure smooth operation of the package and reduce the frictional resistance between the package yarn and the grooved tube. If the angle of the bobbin deviates, that is, the angles of the tapered tube and the grooved tube are inconsistent, and the two cannot be in close contact, a large gap will occur between the big end or small end of the tapered tube and the grooved tube, which will cause bobbin jumping. , and will increase the friction between the yarn and the grooved drum, resulting in an increase in winding hairiness. When the compression spring of the spindle tube fails or the inner hole of the tapered tube is enlarged, the cooperation between the two is loose, which will cause longitudinal slippage between the package yarn and the grooved tube, causing the friction force on the spinning yarn to increase, resulting in winding Hairiness increases sharply; therefore, during production, it is necessary to promptly check the aperture of the tapered tube and the compression spring of the spindle tube to ensure proper coordination between the tapered tube and the spindle tube, and the sensitive operation of the package to reduce winding hairiness.
The yarn guide S-piece on traditional winding machines also has a certain impact on winding hairiness. During winding, the spinning yarn passes through the plastic and metal guide S-piece for a long time, and the guide S-piece will groove, thereby scratching and destroying the structure of the spinning yarn. , turning short hairiness into long hairiness, and the ceramic yarn guide sheet has good wear resistance and is not prone to grooves and static electricity.
​The influence of other factors on winding hairiness
The winding machine model and the yarn path during winding also have a certain impact on winding hairiness. Production practice has proved that the winding hairiness of the 1332M type winding machine is less than that of various automatic winding machines. The reason is that the winding speed of the latter is higher than that of the former, and the yarn path and yarn path enveloping angle of the spinning yarn are Large, therefore, its yarn path hairiness is also higher.

　�High. In production, basic operating methods must be strictly implemented and the spinning channel cleaning work must be done well. In terms of equipment management, it is necessary to strictly implement the technical standards and quality standards of the equipment to ensure that there are no grooves, burrs, etc. in the passages. The machine operators must clean the machines well to prevent sticking, entanglement, hanging, and blockage in the spinning channels. to reduce damage to the yarn structure.