Method for realizing first twist difference of multiple strands on two-for-one twister

Abstract

The invention provides a method for realizing first twist difference of multiple strands on a two-for-one twister, and the method comprises the steps of using at least two strands; pre-twisting the strand whose first twist is larger in the same direction and balancing the first twist difference through step-by-step first twisting; pre-twisting the strand whose first twist is smaller in the opposite direction to balance the twist difference. The method comprises the steps of comprising strand A and strand B, wherein strand A's first twist is a and strand B's first twist is b. Assuming a>b, the twisting is as follows: performing first twist a-b to strand A to balance the twist difference; performing the first twist b to strand A and strand B at the same time and then merging; then performing retwist through a two-for-one twister so as to realize the first twist difference. Multiple strands are retwisted on the two-for-one twister that realizes first twist difference. Compared with retwisting by the ring spinning method, the production efficiency is raised; the quality can be improved; and the loss can be reduced.

Description

technical field [0001] The invention relates to a twisting technology, in particular to a method for realizing differentiation of primary twists of multi-strand yarns on a two-for-one twister. Background technique [0002] When a conventional two-for-one twister twists multi-strand yarns, it is generally divided into two steps. Step ①: Multi-strand yarns are initially twisted and plyed at the same time; Step 2: Double-twisted the ply-twisted yarns after plying; Since the initial twist of the multi-twisted yarn is carried out simultaneously on the two-for-one twister, the initial twist is the same. However, under special conditions, especially for composite multi-strand twisted yarns, it is required to differentiate the first twist of each strand, so it cannot be realized by conventional two-for-one twisting machine twisting method. Contents of the invention [0003] Aiming at the deficiency of the existing technology, the present invention provides a method for realizing ...

AI Technical Summary

Problems solved by technology

However, under special conditions, especially for composite multi-strand twisted yarns, it is required to differentiate the primary twist of each strand, so it cannot be achieved by conventional two-for-one twisting machine twisting method.

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