A Numerical and Experimental Study on the Effect of the Cone Angle of the Spindle in Murata Vortex Spinning Machine

Guo, Hui; An, Xianglong; Yu, Zehui; Yu, Chongwen

doi:10.1115/1.2844582

Cited by 23 publications

(20 citation statements)

References 10 publications

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“…With regard to yarn hairiness, it was observed that the yarn samples in counts of 20 Figure 11. Neps of carded yarns.…”

Section: 17mentioning

confidence: 99%

“…[4][5][6][7][8] Most of the studies regarding the vortex spinning system investigated the influences of processing parameters on the yarn structure and properties. 7,9,[12][13][14][15][16][17][18][19][20][21][22][23] From these studies, it can be concluded that when 100% cotton and cotton-rich blended yarns are produced, the yarn quality deteriorates considerably. 7,15,16,22,23 The range of the yarn count spinnable on the system is claimed by the machinery makers to be between 15-20 Ne and 50-60 Ne.…”

Section: Introductionmentioning

confidence: 99%

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The structure and properties of carded cotton vortex yarns

Erdumlu

Ozipek

Oxenham

2012

Textile Research Journal

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The properties and spinning limits of carded cotton vortex spun yarns were investigated through the progressive change in yarn count. The yarns were tested for structural and physical properties. Critical parameters were obtained, including the ratio of wrapper fibers to core fibers, proportion and average length of different structural classes in the yarn. The structural analysis revealed that the wrapper fibers constitute an increasing proportion of the fibers as the yarn becomes finer. Moreover, the proportion and average length of different structural classes in vortex spun yarns change with yarn count. The analysis of the data obtained from yarn testing showed that as the yarn becomes finer, the yarn becomes more uneven and the number of yarn imperfections markedly increase. On the other hand, the tensile properties of vortex spun yarns remain almost unchanged as the yarn gets finer.

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“…With regard to yarn hairiness, it was observed that the yarn samples in counts of 20 Figure 11. Neps of carded yarns.…”

Section: 17mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The structure and properties of carded cotton vortex yarns

Erdumlu

Ozipek

Oxenham

2012

Textile Research Journal

View full text Add to dashboard Cite

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“…Guo et al performed numerical simulation using computational fiuid dynamics of the airflow pattem inside the twisting system of vortex spinning to study the effect of spindle cone angle on the yam properties [7]. Based on the simulated results of the airflow pattem, only the possible dynamics of the fiber strand and yam were analyzed, while the direct data on the fiber/air two-phase flow were not obtained.…”

Section: Introductionmentioning

confidence: 99%

Designing the Spindle Parameters of Vortex Spinning by Modeling the Fiber/Air Two-Phase Flow

Pei

2014

Journal of Manufacturing Science and Engineering

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Vortex spinning is a novel technology which produces short-staple yarns by utilizing high-speed swirling airflow. The structure of the spindle piays an important role in vortex spinning in terms of its effect on the resuiting yarn properties, ln this paper, a twodimensionai fluid-structure interaction (FSI) modei for the fiber/air two-phase flow is presented to design the two spindle parameters-the spindle cone angle and spindle diameter by evaluating their effects on the fiber dynamics in the flow fleld inside the tnnsting system and the resulting yarn tenacity. The coupling between the fiber and airflow is solved and the motional characteristics of the fiber are obtained. It is found that the fiber moves downstream in a varying wavy shape and its spreaded trailing portion is then in a heiical motion to form the yarn. The results also show that the increase of the spindle cone angle has a negative effect on the tenacity of the produced vortex yarn. The increased spindle diameter gives rise to the decreased vortex yarn tenacity. The numericai results can provide an explanation for the experimental results reported by previous studies.

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“…Based on the characteristics of the flow field distribution, the possible rules of the fiber motion were discussed (Guo, An, Yu, & Yu, 2008;Pei & Yu, 2009). However, these numerical or theoretical researches only obtained the data of the single-phase airflow without the direct data of the fibers in the airflow and the interaction between the fibers and the airflow or the wall.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of fiber motion in the nozzle of Murata vortex spinning machine

Pei

2011

Journal of the Textile Institute

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In this paper, a two-dimensional model for rationally describing the physical and mechanical characteristics of a flexible fiber is presented. The arbitrary Lagrangian-Eulerian technique is adopted to solve the fluid-structure interaction between the fiber and the airflow in the nozzle of a Murata vortex spinning (MVS) machine. The contact problem arising between the fiber and the nozzle wall is also solved. The motion and deformation of the fiber in the airflow inside the MVS nozzle are successfully simulated. The results show that with the action of the airflow, the fiber shows helical movement with wave shape. During its downstream motion, the fiber contacts the inner wall of the spindle frequently. The trailing end of the fiber whirls within the nozzle chamber with great amplitude. The separation and wrapping motion of the fiber take place and twists are inserted into the fiber strand before the trailing end of the fiber enters the spindle entirely. The intensity of the twists inserted into the yarn can be evaluated by the amplitude and the frequency of the periodical rotation of the trailing end of the fiber.

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A Numerical and Experimental Study on the Effect of the Cone Angle of the Spindle in Murata Vortex Spinning Machine

Cited by 23 publications

References 10 publications

The structure and properties of carded cotton vortex yarns

The structure and properties of carded cotton vortex yarns

Designing the Spindle Parameters of Vortex Spinning by Modeling the Fiber/Air Two-Phase Flow

Numerical simulation of fiber motion in the nozzle of Murata vortex spinning machine

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