Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (08): 71-75.doi: 10.13475/j.fzxb.20201101605

• Textile Engineering • Previous Articles     Next Articles

Investigation on distribution of fiber accelerated points in drafting zone of ring spinner based on cut-weighing method

GUO Minghua, LIU Xinjin()   

  1. Key Laboratory of Eco-Textiles(Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
  • Received:2020-11-09 Revised:2021-03-31 Online:2021-08-15 Published:2021-08-24
  • Contact: LIU Xinjin E-mail:liuxinjin2006@163.com

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Abstract:

The distribution of fiber accelerated points in the drafting zone of the ring spinning frame was studied. 29.2, 22.4 and 18.2 tex cotton yarns were spun on the CCZ-X three-roller dual-zone drafting spinning frame, and corresponding quality distribution of the strands in the drafting zone were tested by equal length cutting and weighing method. The quality change distribution of the strands in the drafting zone of the ring spinning machine was used to characterize the distribution of accelerated points, and corresponding distribution lines of fiber accelerated point distribution in the drafting zone for the three yarns are obtained and analyzed. The results show that the equal length cutting and weighing method can obtain the position of the fiber accelerated point distribution in the drafting zone. In this experiment of fiber accelerated point distribution in the drafting zone, the fiber in the strands is found to be relatively concentrated at a distance of 20 mm from the front jaws of the front roller. With the increase of the draft ratio in the front zone, the position of the fiber accelerated point becomes unstable and disperse, and away from the front roller front clamp mouth.

Key words: drafting zone, distribution of accelerated points, equal length cutting and weighing method, mass distribution, spinning frame, yarn quality

CLC Number: 

  • TS131.9

Fig.1

Picture of CCZ-X spinning machine"

Fig.2

Drafting structure diagram of CCZ-X spinning machine"

Fig.3

Fiber quality distribution curve in draft zone"

Tab.1

Spinning parameters of 3 cotton yarns"

线密度/
tex		 牵伸倍数 捻系
数		 前区钳口
隔距/mm		 中心距
前区 后区
29.2 14.54 1.28 350 3.5 50 mm×50 mm
22.4 18.91 1.28 380 3.0 50 mm×50 mm
18.2 23.28 1.28 400 3.0 50 mm×50 mm

Tab.2

Quality distribution of 3 cotton yarns"

牵伸区 29.2 tex 22.4 tex 18.2 tex
距后罗
拉钳口
线距离/
mm		 纤维质
量/mg		 距后罗
拉钳口
线距离/
mm		 纤维质
量/mg		 距后罗
拉钳口
线距离/
mm		 纤维质
量/mg
5 2.4 5 2.4 5 2.6
10 2.4 10 2.4 10 2.6
15 2.3 15 2.5 15 2.4
20 2.3 20 2.5 20 2.4
后牵伸区 25 2.4 25 2.5 25 2.6
30 2.2 30 2.5 30 2.4
35 2.2 35 2.3 35 2.4
40 2.2 40 2.4 40 2.5
45 2.3 45 2.3 45 2.5
50 2.0 50 2.3 50 2.4
55 2.1 55 2.4 55 2.5
60 2.2 60 2.3 60 2.4
65 2.3 65 2.4 65 2.4
70 2.3 70 2.3 70 2.4
前牵伸区 75 2.3 75 2.2 75 2.5
80 2.0 80 1.9 80 1.9
85 1.6 85 1.4 85 1.3
90 1.2 90 0.9 90 1.1
95 0.5 95 0.4 95 0.4
100 0.2 100 0.2 100 0.1

Fig.4

Curves of fiber quality change in back drafting zone of 29.2 tex cotton yarn"

Fig.5

Curves of fiber quality change in front drafting zone of 29.2 tex cotton yarn"

Fig.6

Curves of fiber quality change in back drafting zone of 22.4 tex cotton yarn"

Fig.7

Curves of fiber quality change in front drafting zone of 22.4 tex cotton yarn"

Fig.8

Curves of fiber quality change in back drafting zone of 18.2 tex cotton yarn"

Fig.9

Curves of fiber quality change in front drafting zone of 18.2 tex cotton yarn"

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