a combing method

A combing and fiber technology, applied in the field of spinning, can solve the problems of fiber damage, time-consuming and labor-intensive, etc., and achieve the effect of reducing fiber breakage, reducing short-lint rate, and avoiding fiber damage

Active Publication Date: 2020-06-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the time-consuming and labor-intensive method for determining the length of the dead zone in the prior art, and the defect that the combing process is likely to cause serious damage to the fibers. The present invention is mainly based on the actual situation of the hooks of the fibers in the combed cotton layer , by calculating the appropriate length of the carding dead zone, and then obtained a combing method that can reduce the proportion of fibers being carded and ensure the carding effect

Method used

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Embodiment 1

[0057] A combing method, the average fiber length in the combed cotton layer is 26mm, and the distribution histogram is as follows Figure 5 , the average fiber fineness is 0.17tex, and the histogram of fineness distribution is as follows Figure 6 , the average straightness of the fibers is 0.7, the number of fibers in the cross-section of the cotton layer is 1000, the process parameters are: the working angle of the tooth piece is 48°, the tooth density of the top comb is 150 teeth / 100mm, the tooth tip angle is 18°, the cylinder tooth surface The central angle is 60°, the total number of teeth in the cylinder is 15,000 teeth, and the average tooth density of the cylinder is 22 teeth / cm 2 , the cotton feeding length is 5.2mm, the noil distance is 10mm, and the dead zone length is 7.8mm.

[0058] After combing, the number of neps in the yarn of the cotton layer is reduced by 65% ​​compared with that before combing, the short-lint rate of the combed sliver is 7.5%, the proport...

Embodiment 2

[0066] A kind of combing method, the average length of the fiber in the combed cotton layer is 29mm, the average fiber fineness is 0.16tex, the average straightness of the fiber is 0.72, the process parameters are: the working angle of the teeth is 50 °, the top comb The tooth density is 180 teeth / 100mm, the tooth tip angle is 19°, the central angle of the cylinder tooth surface is 62°, the total number of teeth in the cylinder is 15600 teeth, and the average tooth density of the cylinder is 26 teeth / cm 2 , the cotton feeding length is 4mm, the noil distance is 8mm, and the dead zone length is 8.12mm. After combing, the number of neps in the yarn of the cotton layer decreased by 68% compared with that before combing, the short-lint rate of the combed sliver was 7.6%, and the proportion of broken fibers was 3%.

Embodiment 3

[0068] A kind of combing method, the average length of the fiber in the combed cotton layer is 32mm, the average fiber fineness is 0.167tex, the average straightness of the fiber is 0.74, the process parameters are: the working angle of the teeth is 55 °, the top comb The tooth density is 200 teeth / 100mm, the tooth tip angle is 20°, the central angle of the cylinder tooth surface is 68°, the total number of teeth in the cylinder is 16000 teeth, and the average tooth density of the cylinder is 29 teeth / cm 2 , the cotton feeding length is 4.8mm, the noil distance is 9mm, and the dead zone length is 8.32mm. After combing, the number of neps in the yarn of the cotton layer decreased by 64% compared with that before combing, the short-lint rate of the combed sliver was 7.4%, and the proportion of broken fibers was 3.5%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a combing method. The dead zone length a meets the formula a=l*(1-eta*), wherein l represents the average fiber length, eta* represents the hook average straightness coefficient of fiber in a cotton layer fed for combing, the average fiber length l is obtained by conducting calculation after fiber grouping, and the hook average straightness coefficient of the fiber in thecotton layer fed for combing is obtained by adding colored fiber in cotton combing feeding, measuring the straightness coefficient of the colored fiber after the processes of cotton combing, pre-drawing and lap doubling and then conducting averaging. The combing method can solve the problems that in the prior art, a method for determining the dead zone length consumes much time and labor and easily causes serious damage to fiber in the combing process; by calculating the appropriate combing dead zone length according to the actual hook condition of the fiber in the cotton layer fed for combing, the combing effect is guranateed while the fiber damage is reduced.

Description

technical field [0001] The invention belongs to the technical field of spinning and relates to a combing method, in particular to a method for improving combing and carding effects and reducing fiber damage by reasonably setting the length of a combing cylinder carding dead zone. Background technique [0002] Combing is one of the important processes in the spinning process to improve yarn quality. Combing can straighten, parallelize and separate fibers, improve fiber uniformity, improve yarn evenness and strength, and improve uneven strength. The cylinder is the main part to remove the short fibers, neps and impurities in the small rolls. During the cylinder carding process, the nipper holds the fiber, and the cylinder combs one end of the fiber. When carding, the longer the length of the whiskers outside the jaws, the higher the noil rate and the better the carding effect. [0003] When combing in the cylinder, there is a section of whiskers outside the jaw line that has ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01G19/00
Inventor 曹巧丽钱希茜郁崇文杨建平张斌
Owner DONGHUA UNIV
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