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Super-draft spinning method

A technology of ultra-large draft and draft zone, which is applied in the field of spinning, can solve problems such as the deterioration of linear density distribution, achieve the effect of increasing the draft ratio, increasing the draft ratio, and ensuring the quality of spinning

Active Publication Date: 2019-04-12
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since drafting is an important factor that causes uneven yarn, the larger the draft ratio, the greater the unevenness of the yarn. Under the premise of requirements, the corresponding spun yarn can be produced directly through the ultra-large multiple drafting of the fiber sliver
[0005] In addition, some researchers have increased the number of jaws to form two or more forward-extending rubber ring jaws to achieve fiber grip control. A very critical problem is: in the process of multi-stage co-direction series drafting of fiber strands, the drafting wave in the upstream drafting zone is superimposed on the downstream drafting zone, resulting in serious deterioration of the linear density distribution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A spinning method with super large draft: the twisted fiber slivers with a twist of 11.6 twist / m and a basis weight of 5g / 5m pass through the rear drafting zone, the middle drafting zone and the front drafting zone in sequence, respectively in the rear drafting zone drafting zone and front drafting zone adopt double apron drafting, and at the same time gather in the middle drafting zone and control its drafting multiple to 1 so that the drafting multiples of the rear drafting zone and the front drafting zone are 7 times and 61.5 times respectively , the total draft ratio of the rear draft zone, the middle draft zone and the front draft zone is 430.5 times;

[0056] The structure schematic diagram of the realization device of the spinning method of super large draft of the present invention is as follows: figure 1 As shown, wherein, the rear drafting zone is the area between the rear top roller 2 and the rear roller 1 arranged up and down and the first middle top roller ...

Embodiment 2

[0072] A kind of super-large draft spinning method, basically the same as embodiment 1, the difference is that the twist of the twisted fiber sliver is 8 twists / m, the weight is 30g / 5m, the drafting of the rear drafting zone and the front drafting zone The multiples are 7 times and 51.6 times respectively, and the total drafting multiples of the rear draft zone, middle draft zone and front draft zone are 361.2 times;

[0073] The linear speed of the front roller is 20325mm / min, and the linear speed of the first middle roller is the same as that of the second middle roller;

[0074] The distance between the double apron jaws in the rear drafting zone and the jaws of the rear roller 1 is 5 mm, and the length of the frictional force boundary in the rear drafting zone along the running direction of the twisted fiber strip is 5mm. 88.6% of the fiber strip length;

[0075] The distance between the double rubber ring jaws in the front drafting area and the front roller 17 jaws is 5mm,...

Embodiment 3

[0080] A kind of spinning method of super large draft, basically the same as embodiment 2, the difference is that the twist of the twisted fiber sliver is 15 twist / m, the weight is 15g / 5m, the drafting of the rear drafting zone and the front drafting zone The multiples are 5 times and 62 times respectively, and the total drafting multiples of the rear drafting zone, the middle drafting zone and the front drafting zone are 310 times;

[0081] The linear speed of the front roller is 36500mm / min, and the linear speed of the first middle roller is the same as that of the second middle roller;

[0082] The distance between the double apron jaws in the rear drafting zone and the jaws of the rear roller 1 is 10 mm, and the length of the friction force boundary in the rear drafting zone along the running direction of the twisted fiber strip is 10 mm. 80% of the fiber strip length;

[0083] The distance between the double rubber ring jaws in the front drafting area and the front rolle...

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Abstract

The invention relates to a super-draft spinning method. Twisted fiber ribbons sequentially pass through a rear draft region, a middle draft region and a front draft region; double-rubber-ring draft isrespectively adopted in the rear draft region and the front draft region, simultaneously, aggregation is carried out in the middle draft region and a draft multiple of the middle draft region is controlled into 1 to implement super draft; a free region is formed between a rear roller jaw and a double-rubber-ring jaw in the rear draft region; a free region is formed between a front roller jaw andthe double-rubber-ring jaw in the front draft region; the free regions mean regions which are not applied with friction; and a double-rubber-ring draft system mainly comprises an upper pin frame and alower pin rod which are arranged up and down and matched with each other, a tensioner arranged laterally below the lower pin rod, an upper rubber ring sleeving a middle leather roller and the upper pin frame, and a rear lower rubber ring sleeving a middle roller, the lower pin rod and the tensioner. The method disclosed by the invention implements super draft of yarns in the premise of ensuring yarn quality, and has very high popularization value.

Description

technical field [0001] The invention belongs to the technical field of spinning, and relates to a super-large draft spinning method, in particular to a super-large draft spinning method of bidirectionally extending apron jaws of a spinning machine. Background technique [0002] Ring spinning is a mechanical spinning method in which the spindle, steel ring and traveler are twisted and drawn by rollers. It is the most mature and widely used spinning method in the existing spinning technology. . [0003] Compared with other new spinning technologies, the disadvantage of ring spinning is that the process is longer. This is because the general process of spinning ordinary ring spinning is cotton blending→opening and cleaning→carding→drawing→roving→spinning, that is The uniform fiber slivers merged by the drawing frame must first be made into rovings through the roving process before they can be used by the spinning frame. If the fiber slivers are directly spun into spun yarns, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01H5/22D01H5/36D01H5/44D01H5/72
CPCD01H5/22D01H5/36D01H5/44D01H5/72
Inventor 汪军史倩倩秋黎凤倪远曾泳春张玉泽
Owner DONGHUA UNIV