Five-component synchronous two-stage drafting and spinning method for colorful slub or dot yarn

Abstract

The invention discloses a five-component two-stage drafting colorful bunchy yarn and dot yarn spinning method. The method specially comprises a drafting and twisting system which comprises a first-stage drafting unit and a second-stage drafting unit, and the first-stage drafting unit and the second-stage drafting unit are arranged front and back; the first-stage drafting unit comprises a combined rear roller and a middle roller; the second-stage drafting unit comprises a front roller and the middle roller; the speed Vq of the front roller and the speed Vz of the middle roller are kept constant, only the rotating speed of the combined rear roller is adjusted, and the density and / or blending ratio of yarn can be adjusted at the same time. Dot yarn, bunchy yarn and big-belly yarn produced through the method and a device are evener and more accurate in color mixing, it is guaranteed that the blending effect is more stable by controlling the middle roller to rotate at constant set speed, and chromatic aberration has no obvious change even though yarn is from different batches.

Description

technical field [0001] The invention relates to the field of spinning in textile engineering, in particular to a method and a device for spinning colorful slubs or dotted yarns based on five-component secondary drafting. Background technique [0002] Yarn is an elongated fiber aggregate formed by twisting the fibers in parallel orientation. When fibers are unevenly distributed along the length of the yarn, their linear density or apparent thickness changes. According to the size of this uneven distribution, it can be classified into slub yarn, pot belly yarn, dot yarn, etc., which can be collectively referred to as fancy yarns with varying linear density. If the linear density of the yarn can also be changed while the blending ratio can be changed, fancy yarns with varying linear density and color can be formed. We define this type of yarn as colorful variable density yarn, which can be divided into For colorful slub yarn, colorful pot belly yarn, colorful dot yarn. [00...

AI Technical Summary

Problems solved by technology

[0005] ① When two different raw materials (or different colors) of roving are used as the main and auxiliary yarn strands, the blending ratio (color mixing ratio) of the slub yarn cannot be randomly adjusted; the five-component method has not been used to produce slub yarn, pot belly yarn, The method of dot yarn equal variable linear density yarn

[0007] ③The problem of uneven blending and yarn color matching can not achieve the expected purpose

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