Study on the model of semi-open-end twist in compact spinning with lattice apron

Abstract

The twist mechanism of the fiber strand in the condensing zone in compact spinning is complex. This paper proposes a dynamic model to evaluate the additional twist of the fiber strands. Based on the flow simulation in the condensing zone, the fiber trajectory in the suction slot was simulated and obtained. Several spinning parameters such as suction slot angle, suction slot width, negative pressure, and shape of suction slot, were varied to show their effects on the additional twist. The simulation results indicated that by increasing the suction slot angle from 5° to 10° the additional twist increased significantly. Higher negative pressure also leads to an increase in the additional twist. The suction slot width has a greater effect on the fiber trajectory than on the additional twist. An arc-shape suction slot increased the additional twist compared with a linear-shape one. An experimental test conducted revealed a precise agreement with the simulation results.

Keywords

compact spinning semi-open-end twist suction slot lattice apron numerical simulation

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References

Yang

Cheng

Chen

, et al. Mechanical modeling of an arc-shaped suction slot for compact spinning and analysis of additional twists. Textile Res J 2017; 88(21): 2499–2505.

Yang

Wang

, et al. Mechanical analysis on constant cross-section segment of fiber band in condensing zone during compact spinning. J Textile Inst 2012; 103(2): 117–123.

Gao

Liu

, et al. Numerical simulation of a three-dimensional flow field in compact spinning with a perforated drum: Effect of a guiding device. Textile Res J 2013; 83(19): 2093–2108.

Han

Wei

Xue

, et al. Numerical simulation and analysis of airflow in the condensing zone of compact-siro spinning. Textile Res J 2015; 85(14): 1506–1519.

Liu

. Numerical simulation of the three-dimensional flow field in four pneumatic compact spinning using the Finite Element Method. Textile Res J 2015; 85(16): 1712–1719.

Cheng

. A study of compact spun yarns. Textile Res J 2003; 73(4): 345–349.

Göktepe

Yilmaz

Göktepe

. A comparison of compact yarn properties produced on different systems. Textile Res J 2006; 76(3): 226–234.

Krifa

Ethridge

. Compact spinning effect on cotton yarn quality: Interactions with fiber characteristics. Textile Res J 2006; 76(5): 388–399.

Yilmaz

Usal

. A comparison of compact-jet, compact, and conventional ring-spun yarns. Textile Res J 2011; 81(5): 459–470.

10.

Altas

Kadoglu

. Comparison of conventional ring, mechanical compact and pneumatic compact yarn spinning systems. J Eng Fiber Fabr 2012; 7(1): 87–100.

11.

Gunaydin

Soydan

Palamutcu

. Evaluation of cotton fibre properties in compact yarn spinning processes and investigation of fibre and yarn properties. Fibres Text East Eur 2018; 26(3): 23–34.

12.

Yang

Wang

Yang

. Motion analysis of fiber band in compact field of compact spinning. J Donghua Univ 2006; 23: 144–147.

13.

Haleem

Gordon

Liu

, et al. Dynamic analysis of spinning triangle geometry part 1: Validation of methodology. J Textile Inst 2019; 110(5): 660–670.

14.

Hua

Tao

Cheng

, et al. Effects of geometry of ring spinning triangle on yarn torque part I: Analysis of fiber tension distribution. Textile Res J 2007; 77(11): 853–863.

15.

Gao

Liu

, et al. Theoretical study of fiber tension distribution at the spinning triangle. Textile Res J 2013; 83(16): 1728–1739.

16.

Yang J. Study on compact mechanism of pneumatic compact spinning with lattice apron. Doctoral dissertation, Donghua University, Shanghai, China, 2011.