Paying close attention to the smoothness of the equipment channels, improving the operation level, and doing a good job in cleaning are also crucial to reducing yarn hairiness.
Strengthen equipment management and maintain good mechanical condition
Steel cleaning channel before spinning, carding The smoothness and degree of wear of the coiler, thick bell, cotton collector and other components of the cotton machine; the yarn guide rod, bell mouth, collector, yarn guide hook, yarn separation plate, etc. of the spun yarn have burrs and grooves: The yarn detection rod, tension disk, and grooved drum electric cleaning yarn guide tiles are worn and grooved, the safety cover is improperly positioned and scratches the yarn, and the oil tank automatic stop device fails, etc., which will cause damage to the yarn and increase friction, resulting in hairiness. Increase. In addition, the pre-spinning can is deformed, the edge of the can mouth is not smooth, and the coil track is improperly shifted, causing the sliver to stick to each other; the spinning spindle is not vertical, the steel ring plate is not level, the steel ring is loose, the leaf plate is not straight, the yarn guide hook, the steel ring The spindle is not concentric; the winding yarn insertion spindle is skewed, etc., which will increase the yarn hairiness. Therefore, in actual production, we must strengthen equipment management, strictly inspect equipment, and conscientiously carry out the “three no’s” activities (i.e., no blockage, no foreign matter, and no burrs) in equipment channels to ensure that the yarn channels are smooth and clean: pay attention to equipment maintenance, and discover problems in a timely manner Repair and keeping the machine in good condition is an important measure to reduce hairiness.
Strengthen operation and operation management
(1) Each spinning process should be divided into semi-finished products and finished products. Protective measures should be taken during transportation and storage. Such as cotton roll wrapping cloth, sliver covering cloth, roving cone yarn covering plastic bag, etc., improve the transportation method of bobbin yarn and cone yarn, and strive to reduce damage and friction to the yarn during transportation and storage.
(2) Strengthen operational management and standardize operational behavior. It is strictly forbidden to make high strips to avoid hair and lint caused by slivers and rovings during storage and transportation: The lathe operator should carefully implement the wrapping and splicing operation method to improve the quality of the wrapping and splicing; when wrapping, the movements should be standardized and be careful not to touch. For wool slivers and rovings, the winding stopper must be spliced quickly and the yarn must be placed accurately. It is strictly forbidden to cut the grooved cylinder with a knife to cause burr damage to the thread.
(3) The cleaning cycle and method of the workshop’s overhead, machine and floor cannot be neglected. Cleaning operating procedures should be strictly implemented, especially the cleaning work of machine channels should be strengthened to prevent Flying flowers accumulate on the roof panel and the surface of the roving on the roving frame: it is strictly forbidden to beat when cleaning the machine, which will cause the flying flowers to transfer. It is also not allowed to use a brush to beat the spinning section to reduce the attachment of flying flowers and prevent artificial hairiness.
(4) During the production process, production scheduling management should be strengthened. In line with the principle of “first made, first used”, we rationally arrange the reserve quantity of products in process, firstly to reduce costs, and secondly, to reduce the attachment of foreign flying flowers, etc., and reduce the hairiness of the finished yarn. In the spinning process, attention should be paid to the reasonable arrangement of varieties and machines, and changes should be avoided as much as possible between varieties with extremely large count differences. Because when turning low-count yarn to high-count yarn, if the steel ring is not replaced, the track of the steel ring will be severely worn when spinning low-count yarn, which is extremely detrimental to spinning high-count yarn, and hairiness will be generated in large quantities. </p
