Method for producing non-elastic force composite yarn and device used by the method

Abstract

The invention discloses a method used for producing inelastic core-spun yarn and a device adopted with the method, which comprises a plurality of steps of unwinding the yarn used as core-spun yarn from the large silk rolls to small silk rolls, positioning the small silk rolls on the spinning frame, and guiding the yarn after unwound to the front roller drafting zone joining and twisting with the outer wrapping fibre guided to the zone forming the core-spun yarn. The surfaces of the small silk rolls always possess a constant linear speed when the yarn used as core-spun yarn is unwound from the large silk rolls to the small silk rolls, and the core-spun yarn is wound on the small silk rolls reciprocatingly swinging as a helical line with a swing distance of 40 to 50mm. The invention has the advantages of offering the well formed silk rolls for the production of the inelastic core-spun yarn on the spinning frame, making the traveling route of the core-spun yarn on the spinning frame shorten, avoiding the phenomena of the hollow yarn of finished product caused by the end breaking of winding, convenience for the production of the inelastic core-spun yarn, and reducing the labor intensity of operators.

Description

technical field [0001] The invention relates to a yarn production method, in particular to a method for producing a non-elastic core-spun yarn for producing a core-spun yarn and a device used in the method. Background technique [0002] At present, the core-spun yarns produced in the textile industry are divided into elastic core-spun yarns and non-elastic core-spun yarns, and these two core-spun yarns have their own unique spinning methods and devices. Among them, the elastic core-spun yarn is stretched and thinned by 3.0 to 4.8 times on the device for producing elastic core-spun yarn, and then wrapped with fiber strands by the spinning machine to form a yarn. Among them, spandex and other elastic fibers are used. The silk yarn roll is a small package, which can be directly placed on the spinning frame and actively fed into the drafting area of ​​the roller through the active unwinding method, so the production tension is easy to control, and the produced core-spun yarn has...

AI Technical Summary

Problems solved by technology

The non-elastic core-spun yarn is a core-spun yarn with various non-elastic yarns such as polyester filament and nylon filament as the yarn core, and the outer layer is covered with short fibers such as cotton. Due to polyester filament, vinylon filament, All kinds of non-elastic yarns such as nylon filament are in large packages and large clusters. Therefore, in the production method of non-elastic core-spun yarn, it is not possible to adopt a positive unwinding method like elastic core-spun yarn. The wire frame is installed on the top of the spinning frame, and the silk cluster or yarn cluster of the large package is placed on the wire frame, and the filament or yarn is unwound from the large package in a passive form and passes through a tension frame, and then fed The non-elastic core-spun yarn is produced by wrapping the drafting area of ​​the front roller of the spun yarn with the short fiber strands of the outer layer to form a yarn. The non-elastic core-spun yarn is produced by using this method of silk clusters or yarn clusters in large packages. Or the route of the yarn is long, so the stability of the movement is difficult to control, and it is prone to winding, and there are more broken ends, resulting in more hollow yarn defects in the finished yarn; The time is small and difficult to control, resulting in inconsistent tension after wrapping, resulting in poor wrapping and many exposed core defects; and the large package silk reel runs for a long time in the workshop, and flying flowers are easy to enter the tension frame with the filament or yarn, causing the tension frame The accumulation of flying flowers hinders the movement of filaments or yarns, causing the tension of filaments or yarns to increase, resulting in broken ends

However, the device used to produce non-elastic core-spun yarn by this method is very difficult for the operator to operate because the wire rack is installed on the top of the spinning frame, and the operator’s labor intensity is increased, and the large package The silk clusters or yarn clusters cannot be actively unwound, and the unwinding tension and draft ratio are not easy to control, which affects the quality of non-elastic core-spun yarn

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