集聚纱的分层结构与集聚机制
|
摘要
为解释集聚纺存在的附加捻度现象而与经典非自由端加捻理论相悖的问题,提出了集聚须条具有表层自由端纤维和主体非自由端纤维的分层结构。采用超景深三维数码显微镜观测集聚纱与环锭纱退捻后存在的差异,证明集聚区须条分层结构设想的合理性。对集聚区须条进行取样并在显微镜下观察发现,存在自由端纤维对非自由端纤维包缠加捻的现象。据此提出集聚纺半自由端加捻模型,即负压通过网格圈对主体非自由端纤维起到吸附作用,而负压与集聚槽配合使表层自由端纤维对主体纤维进行加捻作用,形成集聚须条的分层结构从而产生了附加捻度,为集聚机制的阐述提供理论依据。
In order to explain the additional twist phenomenon of the compacted spinning and the contradiction with the classical non-open end twisting theory, the core structure of the open-end fibers and non-open-end fibers of the main body was proposed. The three-dimensional digital microscope was used to observe the structural differences between the compact spun yarn and the ring spun yarn after the untwisting, which indicated that the core structure of the fibers in the condensing area is reasonable. The fibers samples in the condensing area were observed using the microscope, and a phenomenon in which the non-open-end fibers were wrapped by the open-end fibers was found. Hereby, the semi-open end twisting model of the fibers in condensing zone was established, that is, the negative pressure acts on the non-open end fiber of the main body via the lattice apron, the negative pressure and the collecting groove in combination to apply the open end fibers twisting effect on the main fibers. The formation of the core structure of condensing fibers results in the additional twist, which provides a theoretical basis for the condensing mechanism..
In order to explain the additional twist phenomenon of the compacted spinning and the contradiction with the classical non-open end twisting theory, the core structure of the open-end fibers and non-open-end fibers of the main body was proposed. The three-dimensional digital microscope was used to observe the structural differences between the compact spun yarn and the ring spun yarn after the untwisting, which indicated that the core structure of the fibers in the condensing area is reasonable. The fibers samples in the condensing area were observed using the microscope, and a phenomenon in which the non-open-end fibers were wrapped by the open-end fibers was found. Hereby, the semi-open end twisting model of the fibers in condensing zone was established, that is, the negative pressure acts on the non-open end fiber of the main body via the lattice apron, the negative pressure and the collecting groove in combination to apply the open end fibers twisting effect on the main fibers. The formation of the core structure of condensing fibers results in the additional twist, which provides a theoretical basis for the condensing mechanism..
引文
[1] 杨兴, 汪军, 杨建平. 集聚纺集聚区须条的运动分析 [J]. 东华大学学报(自然科学版), 2003, 29(5): 1-4.YANG Xing, WANG Jun, YANG Jianping. Analysis of the movement mechanism of the stranded strips in compact field of compact spinning [J]. Journal of Donghua University (Natural Science Edition), 2003, 29(5): 1-4.
[2] XING Y, WANG J, YANG J P. Motion analysis of fiber band in compact field of compact spinning [J]. Journal of Donghua University(English Edition), 2006, 23(1): 144-147.
[3] 马健, 徐伯俊. 附加捻度对亚麻棉混纺紧密纱性能的影响 [J]. 棉纺织技术, 2007, 35(11): 1-5.MA Jian, XU Bojun. Influence of additional twist on flax cotton blended compact yarn property [J]. Journal of Cotton Textile Technology, 2007, 35(11): 1-5.
[4] WANG J, YANG J P, BU H G, et al. Mechanical analysis on changing cross-sectional segment of fibre band in condensing zone in compact spinning [J]. Journal of the Textile Institute Proceedings & Abstracts, 2009, 100(5): 451-456.
[5] YANG J, WANG J, BU H, et al. Mechanical analysis on constant cross-section segment of fiber band in condensing zone during compact spinning[J]. Journal of the Textile Institute, 2012, 103(2): 117-123.
[6] 周水平. 棉型集聚纺集聚机理研究 [D]. 上海:东华大学, 2005:3-26.ZHOU Shuiping. The study of compact mechanism on cotton compact spinning [D].Shanghai: Donghua University, 2005:3-26.
[7] 周水平, 汪军, 杨建平. 集聚纺集聚区须条等截面部分的力学分析 [J]. 东华大学学报(自然科学版), 2005, 31(3): 10-14.ZHOU Shuiping, WANG Jun, YANG Jianping. Mechanical analysis of changeless section fiber band in compact field of compact spinning [J]. Journal of Donghua University (Natural Science Edition), 2005, 31(3): 10-14.
[8] 周水平, 汪军, 杨建平. 集聚纺集聚区须条变截面部分的力学分析[J]. 东华大学学报(自然科学版), 2005, 31(2): 20-23.ZHOU Shuiping, WANG Jun, YANG Jianping. Mechanical analysis of change section fiber band in compact field of compact spinning [J]. Journal of Donghua University (Natural Science Edition), 2005, 31(2): 20-33.
[9] 杨建平. 网格圈负压式集聚纺集聚机理研究 [D]. 上海:东华大学, 2011:26-30.YANG Jianping. Study on condensing mechanism of pneumatic compact spinning with lattice apron [D]. Shanghai: Donghua University, 2011:26-30.
[10] 杨建平, 傅婷, 汪军. 网格圈负压式集聚纺集聚区须条半自由端加捻机制 [J]. 纺织学报, 2011, 32(10): 37-41.YANG Jianping, FU Ting, WANG Jun. Semi-open-end twisting mechanism of fiber strand in condensing zone in pneumatic compact spinning with lattice apron [J]. Journal of Textile Resarch, 2011, 32(10): 37-41.
[11] 陆宗源. 从立达集聚纺导流器的演变分析集聚纺纱原理 [J]. 棉纺织技术, 2016, 44(4): 75-79.LU Zongyuan. Condensed spinning principle analyses based on the flow guider evolution of Rieter condensed spinning [J]. Journal of Cotton Textile Technology, 2016, 44(4): 75-79.
[2] XING Y, WANG J, YANG J P. Motion analysis of fiber band in compact field of compact spinning [J]. Journal of Donghua University(English Edition), 2006, 23(1): 144-147.
[3] 马健, 徐伯俊. 附加捻度对亚麻棉混纺紧密纱性能的影响 [J]. 棉纺织技术, 2007, 35(11): 1-5.MA Jian, XU Bojun. Influence of additional twist on flax cotton blended compact yarn property [J]. Journal of Cotton Textile Technology, 2007, 35(11): 1-5.
[4] WANG J, YANG J P, BU H G, et al. Mechanical analysis on changing cross-sectional segment of fibre band in condensing zone in compact spinning [J]. Journal of the Textile Institute Proceedings & Abstracts, 2009, 100(5): 451-456.
[5] YANG J, WANG J, BU H, et al. Mechanical analysis on constant cross-section segment of fiber band in condensing zone during compact spinning[J]. Journal of the Textile Institute, 2012, 103(2): 117-123.
[6] 周水平. 棉型集聚纺集聚机理研究 [D]. 上海:东华大学, 2005:3-26.ZHOU Shuiping. The study of compact mechanism on cotton compact spinning [D].Shanghai: Donghua University, 2005:3-26.
[7] 周水平, 汪军, 杨建平. 集聚纺集聚区须条等截面部分的力学分析 [J]. 东华大学学报(自然科学版), 2005, 31(3): 10-14.ZHOU Shuiping, WANG Jun, YANG Jianping. Mechanical analysis of changeless section fiber band in compact field of compact spinning [J]. Journal of Donghua University (Natural Science Edition), 2005, 31(3): 10-14.
[8] 周水平, 汪军, 杨建平. 集聚纺集聚区须条变截面部分的力学分析[J]. 东华大学学报(自然科学版), 2005, 31(2): 20-23.ZHOU Shuiping, WANG Jun, YANG Jianping. Mechanical analysis of change section fiber band in compact field of compact spinning [J]. Journal of Donghua University (Natural Science Edition), 2005, 31(2): 20-33.
[9] 杨建平. 网格圈负压式集聚纺集聚机理研究 [D]. 上海:东华大学, 2011:26-30.YANG Jianping. Study on condensing mechanism of pneumatic compact spinning with lattice apron [D]. Shanghai: Donghua University, 2011:26-30.
[10] 杨建平, 傅婷, 汪军. 网格圈负压式集聚纺集聚区须条半自由端加捻机制 [J]. 纺织学报, 2011, 32(10): 37-41.YANG Jianping, FU Ting, WANG Jun. Semi-open-end twisting mechanism of fiber strand in condensing zone in pneumatic compact spinning with lattice apron [J]. Journal of Textile Resarch, 2011, 32(10): 37-41.
[11] 陆宗源. 从立达集聚纺导流器的演变分析集聚纺纱原理 [J]. 棉纺织技术, 2016, 44(4): 75-79.LU Zongyuan. Condensed spinning principle analyses based on the flow guider evolution of Rieter condensed spinning [J]. Journal of Cotton Textile Technology, 2016, 44(4): 75-79.