A spinning machine for producing low-twist yarn

Abstract

A spinning machine for producing low-twisted yarn, including a ring spinning machine and a false twist device, the false twist device is placed between the output roller pair and the yarn guide hook of the ring spinning machine, and the output roller pair is fed Two rovings are fed in, and the two rovings are synthesized into one yarn through the output roller pair before the false twisting device, and the false twisting device is placed directly above the yarn guide hook and fixed. The invention has the advantages of simple structure of the spinning device, convenient and low-cost transformation of the existing ring spinning machine, and the produced yarn has low torque and good quality.

Description

technical field [0001] The invention belongs to the field of fiber yarn spinning, in particular to a low-torque ring-spun yarn spinning device, which enables the yarn to maintain a stable low torque. Background technique [0002] Existing twisting is an important part of short fiber spinning. During twisting, the yarn will generate a large amount of residual torque, which will have a great influence 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 rib effect which is much to be avoided. [0003] At present, there are two main methods to reduce the residual torque of yarn: permanen...

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Problems solved by technology

[0007] In order to obtain low-torque ring-spun yarn, it is necessary to improve the existing ring-spun spinning method and spinning device, and there have been many studies on this, trying to achieve the goal with the traditional method of reducing the residual torque of the yarn, such as the Chinese patent Document CN1453401A discloses a single-ply torque-free ring-spun yarn processing method and equipment, which proposes to obtain a torque-free yarn on a traditional ring spinning machine through the above-mentioned physical method of reducing the residual torque of the yarn, and the structure is improved. The place is mainly to set the yarn splitting device 5 and the false twisting device 2 between the output roller pair and the yarn guide hook of the existing ring spinning device, see image 3 , Figure 4 and Figure 5 , but the structure of the yarn splitting device and false twisting device provided by it is very complicated, which is inconvenient to manufacture and use; especially the groove rotation movement of the yarn splitting device will repeatedly cut the yarn triangular area, so that the strength of the yarn In addition, the set false twist device also needs to follow the up and down movement of the ring bar, which not only makes the whole spinning device very complicated, but also the yarn cannot get a stable false twist effect, and the spinning effect is poor. Poor, high cost, not suitable for the actual needs of transforming existing industrial production ring spinning machines

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