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A method for differentiating the primary twist of multi-strand yarns on a two-for-one twister

A double twisting machine and differentiated technology, which is applied in the field of realizing the differentiation of the primary twist of multi-strand wires, can solve problems such as inability to achieve, and achieve the effects of improving production efficiency, simplifying the twisting process, and reducing losses

Active Publication Date: 2019-06-25
GITI RADIAL TIRE (ANHUI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • A method for differentiating the primary twist of multi-strand yarns on a two-for-one twister
  • A method for differentiating the primary twist of multi-strand yarns on a two-for-one twister
  • A method for differentiating the primary twist of multi-strand yarns on a two-for-one twister

Examples

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Embodiment 1

[0022] Example 1, such as image 3 Shown, the present invention is to realize the primary twist differentiation of multi-strand twisted yarn on the two-for-one twisting machine with high production efficiency, according to the primary twist difference of each strand in the multi-strand twisted yarn, the strands with difference in primary twist The twist is applied separately, referred to as pre-twisting, to balance the difference in the initial twist between it and other strands, and then use the general twisting technology of the two-for-one twister to perform twisting.

[0023] A method for realizing differential primary twist of multi-strand yarns on a two-for-one twister, the method is: at least two strands, adopting pretwist in the same direction for strands with large initial twist, and balancing the difference in primary twist with stepwise primary twist; For strands with small initial twist, reverse twist and pretwist are used to balance the difference in twist.

[00...

Embodiment 2

[0028] Embodiment 2, the difference between this embodiment and Embodiment 1 is that this embodiment includes A strands, B strands and C strands, wherein the twist of A strands is a, and the primary twist of B strands and C strands For b, assuming a>b, the twisting method is as follows:

[0029] (1) Add primary twist a-b to strand A to balance twist difference;

[0030] (2) Add initial twist b to A, B, C fibers at the same time, and ply;

[0031] (3) Use the two-for-one twister for double twisting, so as to realize the difference in the initial twist.

[0032] Beneficial effects of the present invention: the twisting of multi-strand twisted yarns with differentiated initial twists on the two-for-one twisting machine simplifies the twisting process, improves production efficiency, and is beneficial to quality improvement and loss reduce.

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01H1/10D02G3/28
CPCD01H1/10D02G3/28
Inventor 赵燚
Owner GITI RADIAL TIRE (ANHUI) CO LTD
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