Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (02): 63-68.doi: 10.13475/j.fzxb.20181100206

• Textile Engineering • Previous Articles     Next Articles

Comparative analysis of rotor spinning machines and yarn performance between conventional and dual-feed rotor spinning

SHI Qianqian1, AKANKWASA Nicholus Tayari1, LIN Huiting2, ZHANG Yuze1, WANG Jun1,3()   

  1. 1. College of Textiles, Donghua University, Shanghai 201620, China
    2. College of Textile and Apparel, Quanzhou Normal University, Quanzhou, Fujian 362000, China
    3. Key Laboratory of Textile Science & Technology, Ministry of Education, Shanghai 201620, China
  • Received:2018-10-31 Revised:2018-11-17 Online:2019-02-15 Published:2019-02-01
  • Contact: WANG Jun E-mail:junwang@dhu.edu.cn

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Abstract:

In view of conventional rotor spinning's limitation which can only spin the fiber raw materials with similar properties of pure spinning or blending because of single carding technique, it is difficult to produce the blending yarn with large difference in fiber properties. Based on the recent research of dual-feed and dual-comb rotor spinning technology, this paper briefly introduced the yarn forming mechanism of conventional rotor spinning and the characteristics of dual-feed rotor spinning technology, and did the comparative analysis of rotor spinning machines' structure in the two rotor spinning systems. By means of fluid dynamics numerical simulation and sample yarn spinning test, this paper further analyzed conventional rotor spinning and dual-feed rotor spinning comparatively from the two aspects of the airflow distribution inside the rotor, which includes the vortex, airflow velocity and pressure, and the yarn performance. The research result verifies the feasibility and superiority of the dual-feed rotor spinning.

Key words: dual-feed rotor spinning, conventional rotor spinning, numerical simulation, airflow distribution, yarn performance

CLC Number: 

  • TS111.8

Fig.1

Comparison chart of rotor spinning machine in two rotor spinning systems. (a) Conventional rotor spinning machine; (b) Dual-feed rotor spinning machine"

Fig.2

Geometric model chart of dual-feed rotor spinning machine"

Fig.3

Chart of stream traces and turbulent viscosity. (a) Flow simulation of dual-feed rotor spinning;(b) Flow simulation of conventional rotor spinning"

Fig.4

Velocity distribution at rotor groove. (a) y=2 mm, at different angles of rotor groove;(b) y=4 mm, at different angles of rotor groove;(c) section y=3 mm along X-axis"

Fig.5

Comparison of negative pressure inside rotor of two different rotor spinning systems"

Fig.6

Comparison of SEM images of yarns spun in two rotor spinning systems. (a) Dual-feed cross-sectional view;(b) Conventional spun yarn cross-sectional view; (c) Dual-feed longitudinal view; (d) Conventional longitudinal section"

Tab.1

Comparison of yarn tensile properties and hairiness index"

纱线线
密度/
tex		 棉/粘
胶纤维		 纺纱
器		 纱线
强度/
(cN·tex-1)		 断裂伸
长率/
%		 毛羽指数
(≥3 mm)/
mm
34 50/50 双喂给 12.43 9.62 3.78
传统型 10.43 9.23 5.10
34 70/30 双喂给 14.59 8.64 3.49
传统型 11.21 7.98 4.97
42 50/50 双喂给 13.66 10.09 7.66
传统型 10.93 9.80 11.0
42 70/30 双喂给 13.97 8.07 5.02
传统型 11.12 8.10 9.86

Tab.2

Comparison of yarn evenness performance"

线密
度/
tex		 棉/粘
胶纤维		 纺纱
器		 条干不
匀率/
%		 纱疵/(个·km-1)
细节
(-50%)		 粗节
(+50%)		 棉结
(+280%)
34 50/50 双喂给 16.47 4 10 7
传统型 18.20 7 9 8
34 70/30 双喂给 15.92 5 7 0
传统型 16.50 8 12 0
42 50/50 双喂给 17.21 3 9 12
传统型 17.88 4 6 15
42 70/30 双喂给 15.48 0 5 2
传统型 17.22 6 8 10
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