Layered compact spinning device and method

Abstract

The invention provides a layered compact spinning device and method. The device comprises a drafting mechanism, an output roller pair is mounted on the front side of the drafting mechanism, a negative pressure device is mounted between a lower front roller of the drafting mechanism and an output lower roller and adopts a hollow iron cylinder structure, a compacting belt winds around the output lower roller and the negative pressure device, holes are uniformly formed in the compacting belt, a front notch and a back notch are formed in the upward arc surface of the negative pressure device, front and back press parts are arranged at bottoms of the front and back notches, and the position of a fiber strand compacting surface can be adjusted by adjusting lateral positions of the front and back press parts. During spinning, drafted double fiber strands are subjected to primary self-twisting compaction and secondary double-twisting compaction, layered efficient compaction in Siro-spinning is realized, the compaction effect is improved, and the spun yarn quality is improved.

Description

technical field [0001] The invention relates to the field of spinning new technology, in particular to a layered compact spinning device and a spinning method. Background technique [0002] Ring spinning, which has a long history, is still the most important spun yarn production method at present. In this way, the fed fiber strips with a certain twist are drawn and slender, and finally twisted into the required spun yarn. However, the main problems of ring spinning are: due to the existence of the twisting triangle, on the one hand, the head and tail ends of the side fibers will not be easily wrapped into the yarn sliver to form hairiness; on the other hand, due to the tension between the side fibers and the center fiber The difference is large, and it is not easy to break at the same time when stretching, resulting in the inability to make full use of the strength of each single fiber and reduce the strength of the single yarn. [0003] In order to solve this problem, rese...

AI Technical Summary

Problems solved by technology

However, the main problems of ring spinning are: due to the existence of the twisting triangle, on the one hand, the head and tail ends of the side fibers will not be easily wrapped into the yarn sliver to form hairiness; on the other hand, due to the tension between the side fibers and the center fiber The difference is large, and it is not easy to break at the same time when stretching, resulting in the inability to make full use of the strength of each single fiber and reduce the strength of single yarn

However, this direct cohesion has a limited effect on the accumulation and compression of fiber strands, and at the same time, it cannot make the fiber strands have an initial twist before twisting, which is not conducive to improving the strength of the final yarn.

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