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Theoretical study of spinning triangle with raised part

机译：凸起三角形旋转的理论研究

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摘要

Spinning triangle is a critical region in the spinning process of staple yarn, the geometric and mechanical performances of which plays an important role in determining the physical performance of spun yams. Taking appropriate measures to influence the spinning triangle geometry and improve the qualities of yarn has greatly attracted interest of many researchers recently. In these modified ring spinning systems, the raised parts at spinning triangle are often existed, i.e. the fibers in the spinning triangle are not on the same plane, but a part of fibers is squeezed into the middle part of spinning triangle by the heavy twist. Therefore, in this paper, a new theoretical model of fiber tension distribution in the spinning triangle is proposed by considering the raised parts at spinning triangle based on the principle of minimum potential energy. The relationships between the fiber tension and the spinning triangle shapes are presented. Then, a theoretical model of the residual torque within a yarn due to the fiber tension was given correspondingly. Finally, as an application of the proposed method, Ne32 cotton yarns were taken as an example for the simulation. The fiber tension distributions in the spinning triangle and corresponding residual torque within a yarn were numerically simulated and the results were compared with those by earlier models, in which the fibers in the spinning triangle were assumed to be located on the same plane.
机译：三角纺纱是短纤纺纱过程中的关键区域，其几何和机械性能在决定纺纱的物理性能方面起着重要作用。采取适当的措施来影响纺纱三角形的几何形状并提高纱线的质量最近引起了许多研究人员的兴趣。在这些改进的环锭纺纱系统中，纺纱三角处经常存在凸起部分，即纺纱三角中的纤维不在同一平面上，但是一部分纤维由于剧烈的扭曲而被挤入纺纱三角的中间部分。因此，本文基于最小势能原理，通过考虑纺纱三角上的凸起部分，提出了纺纱三角中纤维张力分布的新理论模型。给出了纤维张力和纺丝三角形形状之间的关系。然后，相应地给出了由于纤维张力引起的纱线内残余转矩的理论模型。最后，以该方法的应用为例，以Ne32棉纱为例进行了仿真。对纺丝三角中的纤维张力分布和纱线中的相应残余扭矩进行了数值模拟，并将结果与​​早期模型的结果进行了比较，在早期模型中，纺丝三角中的纤维位于同一平面上。

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  • 来源
    《The Journal of the Textile Institute》 |2014年第5期|483-490|共8页
  • 作者

    Xinjin Liu; Xuzhong Su;

  • 作者单位

    School of Textile and Clothing, Jiangnan University, Wuxi, P.R. China,Key Laboratory of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, P.R. China;

    School of Textile and Clothing, Jiangnan University, Wuxi, P.R. China,Key Laboratory of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, P.R. China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ring spinning; spinning triangle; yarn torque; fiber tension; raised part;

    机译：环锭纺旋转三角形纱线扭矩纤维张力凸起部分;

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