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The air splicer is a new type of equipment for connecting yarns in processes such as winding in the textile industry. It can replace traditional weaving knots and self-tightening knotters to obtain high-quality crepe yarn without knots, which has significant economic and social benefits for improving yarn and fabric quality and production efficiency.
The use of the FC305 oscillating air splicer is mainly to adjust the three process parameters of the air splicer: one is the splicing time, that is, the splicing time of the splicing and twisting of the joint is completed; The length, that is, the stacking length of the yarn, is adjusted by changing the stroke length of the two sides of the yarn to change the length and thickness of the joint; the third is the amount of jetting, that is, by adjusting the amount of the jet to a certain extent Different withdrawal effects.
The splicer puts two yarns, namely the bobbin and the bobbin, into a double-sided cross state, and puts into the splicing cavity to open the working gas path, and the two ends of the yarn are respectively clamped by the gripper and the gripper. Cut the waste yarn and close the cover. At this time, the retracting gas path is opened, and the yarn end of the yarn is sucked into the retracting oscillator. Under the action of the high-pressure airflow, the oscillating plate generates high-frequency oscillation, and the yarn is violently dialed in the oscillator to make the yarn retreat. At the same time, the floating fibers at the end of the yarn are blown away by the high-speed air stream. The yarn end of the flawless yarn exits the untwisting oscillator by the drawing action, and the two untwisting yarn ends are overlapped in the splicing cavity, and the high pressure airflow is sprayed in the splicing cavity, and then the two yarn ends are mixed and twisted. At this time, the splicing process is reset, and the spliced ​​yarn is withdrawn from the splicing chamber, that is, a splicing operation procedure is completed.
In the unloading mode, the FC309 air compressor uses the serrated vibrating piece in the untwisting pipe to comb the yarn from the top to the bottom by the powerful rotating air flow opposite to the yarn loosening line. Open fully and then splicing the joint through the splicing chamber. The degree of yarn head unwinding effect directly affects the quality appearance and strength of the yarn joint. If the excessive amount of sputum is excessive, the yarn in the splicing area will be too fine and the strength will be low; if the sputum is bad, the sputum area will be too small, the strength will be low, and the hairiness at both ends will be large. Only a good sputum effect can guarantee high quality. Good appearance and splicing effect.
The main reason for the poor quality of the CJ13 special (FDY50D) non-elastic cotton-coated polyester filament core-spun yarn developed by our company is that the surface of the polyester filament is relatively slippery, the cohesive force is poor, and the friction coefficient is small, which is not conducive to the splicing. When the length of the cotton fiber is different, the cohesion is strong and the friction coefficient is large, which facilitates the splicing. In view of the good retreat of cotton fiber during the untwisting and the poor retreat of the polyester filament, our company used the FC305 air splicer joint to have the above problems to varying degrees, thus affecting the product quality. Therefore, in order to ensure the quality of the yarn, our company adopted the FC309 strong airflow retractable tubular air splicer produced by Shanghai Shunfang Industry and Trade Development Co., Ltd. We conducted a comparison test between FC305 and FC309 splicers. The technical parameter data showed that the FC309 type splicer retains a strong R value of 76% after splicing, which is better than FC305 type, and the splicing strength coefficient of variation FC309 is 14.1. % is also superior to the FC305 type, indicating that the FC309 type has good splicing effect and the splicing is stable. By adjusting the data of the splicing time and the air compression pressure, the retention of the strong R value after the FC309 type air splicer is spliced ​​is obviously improved, and the coefficient of variation is further improved, and the comparative advantage with the FC305 type is more prominent. This solution solves the problem of our company's non-elastic core yarn joints and ensures the yarn quality.
The performance of new fiber materials depends on the choice of the splicing technology of the new yarn. The FC309 air-rotating air splicer developed by Shanghai Xingfang Industry & Trade Development Co., Ltd. adopts the powerful cyclone untwisting method, which is helpful for the untwisting of high-twisting yarns. The strength of the splicing is stable. It is suitable for cotton, cotton, polyester and wool. , chemical fiber, blended and cellulose fibers (viscose, Tencel, Modal, soy fiber, bamboo fiber), single yarn no knot connection. The FC309 air splicer has found the best splicing technical measures by optimizing the technical parameters of the splicer selection, ensuring the quality of the yarn and recommending it.
Non-elastic core-spun yarn yam knotting technology
With the increasing competition in the textile market, Shandong Shengxian Feitai Textile Group Co., Ltd. has increased its research and development efforts in response to market conditions, and has successively developed and produced many new products, such as slub yarn, soy protein fiber yarn, and bamboo fiber. Special fibers such as core yarns increase the added value of the products. In particular, the recently developed CJ13 special (FDY50D) non-elastic cotton-coated polyester filament core-spun yarn has been approved by users, but there is a problem of joint strength and fiber coating after splicing. For this reason, the technical personnel of the company have carried out technical research and achieved good results. Now we have some experience and suggestions on the application of the air compressor in the non-elastic core-spun yarn yarn knotting technology.