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Method and device for regulating yarn linear density and blending ratio by three-component synchronous drafting

A technology of linear density and blending ratio, which is applied to drafting equipment, yarns, spinning machines, etc., can solve the problems of poor pattern reproducibility and the inability to randomly adjust the yarn blending ratio online

Active Publication Date: 2018-10-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 yarn cannot be adjusted randomly online; the blending ratio (color mixing ratio) cannot be adjusted while adjusting the thickness of the yarn The change
[0007] ③ The reproducibility of the pattern is poor

Method used

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  • Method and device for regulating yarn linear density and blending ratio by three-component synchronous drafting
  • Method and device for regulating yarn linear density and blending ratio by three-component synchronous drafting
  • Method and device for regulating yarn linear density and blending ratio by three-component synchronous drafting

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Embodiment Construction

[0067] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0068] Such as Figure 1-5 As shown, a method for regulating yarn linear density and blending ratio by three-component synchronous drafting specifically includes:

[0069] 1) The drafting and twisting system includes a primary drafting unit and a secondary drafting unit arranged in front and rear;

[0070] 2) The primary drafting unit includes a combined rear roller 11 and a middle roller 3; the combined rear roller 11 has three rotational degrees of freedom, including the first rear roller 5, the second rear roller 7 and the second rear roller arranged side by side on the same rear roller shaft. The third rear roller 9; the secondary drafting unit includes the front roller 1 and the middle roller 3. 4 is the top roller corresponding to the middle roller 3, and 6, 8, 10 are the three top rollers corresponding to the three rear rollers. 2 is the top ro...

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Abstract

The invention discloses a three-ingredient asynchronous / synchronous draft yarn linear density and blending ratio regulating and controlling method and device. A drafting and twisting system comprises a primary drafting unit and a secondary drafting unit arranged at the front and back; the primary drafting unit comprises a combined rear roller and an intermediate roller; the secondary drafting unit comprises a front roller and an intermediate roller; the rotating speed of a first rear roller, a second rear roller and / or a third rear roller on the combined rear roller is increased and reduced based on the reference linear speed of a reference line segment to dynamically regulate the linear density and / or blending ratio of the i segment of yarn Y online. The little yarn, bunchy yarn and big-belly yarn produced by the method and device are more uniform and precise in color blending, through controlling the intermediate roller to rotate in a constant set speed, the blending effect is more stable, and the color difference between different batches of yarns is not obvious.

Description

technical field [0001] The invention relates to the field of spinning in textile engineering, in particular to a method and device for regulating yarn linear density and blending ratio by three-component synchronous two-stage drafting. Background technique [0002] Yarn is an elongated fiber assembly formed by twisting fibers in parallel orientation. When the fibers are not evenly distributed in the length direction of the yarn, its linear density (or appearance) will increase a dynamic linear density (dynamic thickness) on the basis of the reference linear density (reference thickness), resulting in the yarn line Density (or thickness) changes. According to the size of this uneven distribution, it can be classified into slub yarn, dot yarn, etc., or collectively referred to as fancy yarn with linear density change. If the blending ratio can be changed while the linear density of the yarn is changed, fancy yarns with variable linear density and color can be formed. We defi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/04D01H5/22D01H13/32
Inventor 薛元王鸿博周建郭明瑞
Owner JIANGNAN UNIV
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