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Method and device for five-component asynchronous and synchronous drafting regulation and control of yarn linear density and blended ratio

A technology of linear density and blending ratio, used in drafting equipment, spinning machines, textiles and papermaking, etc., can solve the problems of poor pattern reproducibility and inability to randomly adjust the yarn blending ratio online.

Active Publication Date: 2015-07-22
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 five-component asynchronous and synchronous drafting regulation and control of yarn linear density and blended ratio
  • Method and device for five-component asynchronous and synchronous drafting regulation and control of yarn linear density and blended ratio
  • Method and device for five-component asynchronous and synchronous drafting regulation and control of yarn linear density and blended ratio

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Effect test

Embodiment 1

[0076] A method for regulating yarn linear density and blending ratio by five-component synchronous drafting, specifically comprising:

[0077] 1) if Figure 1-4 As shown, the drafting and twisting system includes a primary drafting unit and a secondary drafting unit arranged before and after;

[0078] 2) The primary drafting unit includes combined rear rollers and middle rollers; the combined rear rollers have five rotational degrees of freedom, which include the first rear roller, the second rear roller, and the third rear roller arranged side by side on the same rear roller shaft , the fourth rear roller and the fifth rear roller; the first rear roller, the second rear roller, the third rear roller, the fourth rear roller and the fifth rear roller respectively at speed V h1 , V h2 , V h3 , V h4 and V h5 movement; middle roller at speed V z The speed rotation; the two-level synchronous drafting unit includes the front roller and the middle roller; the front roller is a...

Embodiment 2

[0133] A device for spinning colorful slub and dotted yarns based on five-component two-stage drafting includes a control system and an actuator. mechanism; the secondary drafting mechanism includes a primary drafting unit and a secondary drafting unit;

[0134] Such as figure 1 and 2 As shown, the first-stage drafting unit includes a combined rear roller 15 and a middle roller 3; the combined rear roller 15 has five rotational degrees of freedom, and includes the first rear roller 6 and the second rear roller arranged side by side on the same rear roller shaft 20 8. The third rear roller 10, the fourth rear roller 12 and the fifth rear roller 14; 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, 5, 7, 9, 11 and 13 are five top rollers corresponding to five back rollers. 2 is the top roller corresponding to the front roller 1.

[0135] Such as figure 2 As shown, there is a 5-degree-o...

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Abstract

The invention discloses a method for five-component asynchronous and synchronous drafting regulation and control of yarn linear density and blended ratio. The method is characterized in that a drafting and twisting system comprises a first-grade drafting unit and a second-grade drafting unit which are arranged in a front-back mode, the first-grade drafting unit comprises a combined rear roller and a middle roller, the second-grade drafting unit comprises a front roller and the middle roller, and based on the standard linear speed of the standard line segment, on-line dynamic adjustment of the yarn linear density or / and the blended ratio of yarn Y on i segment can be achieved by increasing or decreasing the rotating speed of a first rear roller, a second rear roller, a third rear roller, a fourth rear roller and / or a fifth rear roller of the rear roller. By means of the method and device, the produced the color mixture of dotted yarn, bunchy yarn and big-belly yarn is evener and more accurate, the middle roller is controlled to rotate in a constant preset speed, it is guaranteed that the blending effect is more stable, and even for the yarn of different batches, obvious changes of color difference do not occur.

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 Applications(China)
IPC IPC(8): D01H5/36
CPCD01H5/36
Inventor 高卫东薛元郭明瑞王鸿博
Owner JIANGNAN UNIV
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