Method and apparatus for machining single ring spun yarn

Abstract

The present invention provides a processing method of a low-torque single-strand ring spinning yarn and an apparatus thereof. The device comprises a ring spinner, a false twister between a pair of front rolls and travellers of the ring spinner for controlling and adjusting the arrangement structure and stress distribution of fiber bundles in the single-strand yarn so as to produce the single-strand yarns with controlled residual torque including torque-free state; a driving means coupled with the false twister for driving the false twister and controlling the transmission ratio between the false twister and a spindle of the ring spinner in real time so as to realize a special transmission motion between the spindle of the ring spinner and the false twister, reduce a yarn breakage rate during an over spinning stage, and improve the spinnability of the single-strand yarn; and the device also comprises a yarn guide device disposed between the false twister and the travellers of the ring spinner. According to the method and the apparatus of the invention, the low-torque single-strand ring spinning yarns can be made with low twist, less hairiness, uniform strand, good hand feeling and especial controlled residual torque including torque-free state.

Description

technical field [0001] The invention belongs to the field of fiber yarn processing methods and equipment, and further relates to a single-strand ring-spun yarn processing method, which enables the internal torque of the yarn to be balanced. Background technique [0002] Twisting is an important part of short fiber spinning. During this period, the yarn will generate a large amount of residual torque, which will have a great impact on the quality of subsequent products. For example, in knitted fabrics, due to the change in the internal torsional stress of the yarn, the loops of the fabric will rotate and release the internal torsional stress. As a result, one end of it will lift and protrude from the surface of the fabric, while the other end will stay inside the fabric. This deformation of the loops will increase the curvature of the fabric; and produce a deformation like the rib effect which is much to be avoided. [0003] At present, there are two main methods to solve t...

AI Technical Summary

Problems solved by technology

In "Journal of Textile Research" Vol.62, No.1, 1992, Sawhey et al proposed a method for processing ring-spun cotton shell / polyester core torque-free yarn, but the machines and processes involved in both are relatively complicated

In "Journal of Textile Research" Vol.57, No.1, 1997, Tao Xiaoming and others used the core-shell layer structure of the rotor yarn to process the torque-free single-ply yarn, but this technology is not suitable for ring Spindle Yarn

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