经编纱线张力补偿装置的工作机制
|
摘要
为获得理想状态的经纱张力,通过改变张力弹簧的规格及其安装密度,对织造过程中的纱线动态张力进行测试,探讨不同补偿作用下的经纱张力波动规律,进而研究补偿装置的补偿机制。结果表明:张力补偿装置的使用可补偿纱线张力波动,并且随着补偿装置弹性系数的增大,纱线动态张力的峰值增大;纱线张力波动过大会导致断纱,影响生产效率;弹性系数并非越小越合适,较小的纱线张力会导致纱线张力波动加剧,易产生垫纱困难,导致布面产生漏针等疵点,理想补偿装置的弹性系数应当存在一个合适的范围。
In order to obtain ideal warp tension dynamics, by regulating the tension spring and its tightness settings, based on investigations carried out on the dynamics of yarn tension during the knitting process, analysis of the warp tension patterns under different compensations, as well as a study of the operation mechanism of the compensation device was carried out. Results show that the use of tension compensation device can compensate for yarn tension fluctuation. However,with the increase in the elasticity coefficient of the compensation device, the peak value of yarn dynamic tension also increases leading to excessive yarn tension variation resulting in yarn breakages which in turns adversely impacts production efficiency. However, it cannot be taken that the lower the elasticity coefficiency the better, as lower yarn tension leads to volatility in yarn tension, leading to production defects such as drop stitches on fabric surfaces. The elastic coefficient of an ideal compensation device, therefore, needs optimum adjustment to ensure efficient production.
In order to obtain ideal warp tension dynamics, by regulating the tension spring and its tightness settings, based on investigations carried out on the dynamics of yarn tension during the knitting process, analysis of the warp tension patterns under different compensations, as well as a study of the operation mechanism of the compensation device was carried out. Results show that the use of tension compensation device can compensate for yarn tension fluctuation. However,with the increase in the elasticity coefficient of the compensation device, the peak value of yarn dynamic tension also increases leading to excessive yarn tension variation resulting in yarn breakages which in turns adversely impacts production efficiency. However, it cannot be taken that the lower the elasticity coefficiency the better, as lower yarn tension leads to volatility in yarn tension, leading to production defects such as drop stitches on fabric surfaces. The elastic coefficient of an ideal compensation device, therefore, needs optimum adjustment to ensure efficient production.
引文
[1] 张灵婕,缪旭红.经编纱线张力补偿技术进展[J].纺织导报,2016(5):64-66.ZHANG Lingjie,MIAO Xuhong. The progress of warp tension compensation technology in warp knitting[J]. China Textile Leader,2016(5):64-66.
[2] 宗平生.经编送经研究[J].针织工业,1980(1):23-29.ZONG Pingsheng. Warp let-off mechanism study[J]. Knitting Industries,1980(1):23-29.
[3] 徐雷麟,胡企贤.纱路张力补偿系统特性分析[J].华东纺织工学院学报,1984(2):1-11.XU Leilin,HU Qixian. Characteristic analysis of yarn tension compensation system[J]. Journal of Huadong Textile Industry University,1984(2):1-11.
[4] 陈红霞,蒋高明.经编机经纱动态张力数字化测试[J].针织工业,2004(6):35-38,23.CHEN Hongxia,JIANG Gaoming. The dynamic tension digital test of warp knitting machine[J].Knitting Industries,2004(6):35-38,23.
[5] 夏风林,刘苏,张琦,等.电子送经系统的滞后响应[J]. 纺织学报,2014,35(1):122-126.XIA Fenglin,LIU Su, ZHANG Qi,et al. Time-delay analysis of electronic let-off system on warp knitting machine[J]. Journal of Textile Research,2014,35(1):122-126.
[6] 王俊科,夏风林,张琦,等.经编机启停过程中的闭环送经控制特性[J]. 纺织导报,2017(2):67-69.WANG Junke,XIA Fenglin,ZHANG Qi,et al. The characteristics of closed-loop control of let-off system during start/stop of warp-knitting machine[J]. China Textile Leader,2017(2):67-69.
[7] MIKOLAJCZYK Z. Model of the feeding process of anisotropic warp knitted fabrics[J].Fibres and Textiles in Eastern Europe,2003,11(2): 58-62.
[8] METZKES K,SCHMIDT R,MÄRTIN J,et al.Simulation of the yarn transportation dynamics in a warp knitting machine[J]. Textile Research Journal,2013,83(12): 1251-1262.
[9] KOO Y S. Yarn tension variation on the needle during the knitting process[J].Textile Research Journal,2004,74(74): 314-317.
[10] 夏风林,葛明桥,蒋高明.高速经编机梳栉横移运动的优化设计[J].纺织学报,2009,30(5):118-121.XIA Fenglin, GE Mingqiao, JIANG Gaoming. Optimal design of transverse motion of the comb in high speed warp knitting machine[J]. Journal of Textile Research, 2009,30(5):118-121.
[11] LIU X, MIAO X. Analysis of yarn tension based on yarn demand variation on a tricot knitting machine[J]. Textile Research Journal, 2016,87(4):487-497.
[12] 冯勋伟.经编机经纱张力分析及合理上机条件探讨[J].纺织学报,1989,10(7):25-28.FENG Xunwei. Analysis of warp tension of warp knitting machine an ddiscussion of reasonable operating conditions[J]. Journal of Textile Research,1989,10(7):25-28.
[13] 陈跃华,冯勋伟,姜艺.编织重经织物时经纱张力分析[J].中国纺织大学学报,1996,22(6):88-93.CHEN Yuehua,FENG Xunwei,JIANG Yi. Analysis of warp tension in woven fabric[J]. Journal of China Textile University,1996,22(6):88-93.
[14] 汤振民.经编工艺中减少经纱张力波动的研究[J].国外纺织技术,1985(14):8-11.TANG Zhenmin. Study on reducing the tension fluctuation of warp yarn in warp knitting[J]. Textile Technology Overseas,1985(14):8-11.
[15] 张灵婕,缪旭红,蒋高明,等.经编张力补偿装置对经纱张力的影响[J].纺织学报,2016,37(11):126-129.ZHANG Lingjie,MIAO Xuhong,JIANG Gaoming,et al. Influence of warp knitting tension compensation device on warp tension[J] Journal of Textile Research,2016,37(11):126-129.
[2] 宗平生.经编送经研究[J].针织工业,1980(1):23-29.ZONG Pingsheng. Warp let-off mechanism study[J]. Knitting Industries,1980(1):23-29.
[3] 徐雷麟,胡企贤.纱路张力补偿系统特性分析[J].华东纺织工学院学报,1984(2):1-11.XU Leilin,HU Qixian. Characteristic analysis of yarn tension compensation system[J]. Journal of Huadong Textile Industry University,1984(2):1-11.
[4] 陈红霞,蒋高明.经编机经纱动态张力数字化测试[J].针织工业,2004(6):35-38,23.CHEN Hongxia,JIANG Gaoming. The dynamic tension digital test of warp knitting machine[J].Knitting Industries,2004(6):35-38,23.
[5] 夏风林,刘苏,张琦,等.电子送经系统的滞后响应[J]. 纺织学报,2014,35(1):122-126.XIA Fenglin,LIU Su, ZHANG Qi,et al. Time-delay analysis of electronic let-off system on warp knitting machine[J]. Journal of Textile Research,2014,35(1):122-126.
[6] 王俊科,夏风林,张琦,等.经编机启停过程中的闭环送经控制特性[J]. 纺织导报,2017(2):67-69.WANG Junke,XIA Fenglin,ZHANG Qi,et al. The characteristics of closed-loop control of let-off system during start/stop of warp-knitting machine[J]. China Textile Leader,2017(2):67-69.
[7] MIKOLAJCZYK Z. Model of the feeding process of anisotropic warp knitted fabrics[J].Fibres and Textiles in Eastern Europe,2003,11(2): 58-62.
[8] METZKES K,SCHMIDT R,MÄRTIN J,et al.Simulation of the yarn transportation dynamics in a warp knitting machine[J]. Textile Research Journal,2013,83(12): 1251-1262.
[9] KOO Y S. Yarn tension variation on the needle during the knitting process[J].Textile Research Journal,2004,74(74): 314-317.
[10] 夏风林,葛明桥,蒋高明.高速经编机梳栉横移运动的优化设计[J].纺织学报,2009,30(5):118-121.XIA Fenglin, GE Mingqiao, JIANG Gaoming. Optimal design of transverse motion of the comb in high speed warp knitting machine[J]. Journal of Textile Research, 2009,30(5):118-121.
[11] LIU X, MIAO X. Analysis of yarn tension based on yarn demand variation on a tricot knitting machine[J]. Textile Research Journal, 2016,87(4):487-497.
[12] 冯勋伟.经编机经纱张力分析及合理上机条件探讨[J].纺织学报,1989,10(7):25-28.FENG Xunwei. Analysis of warp tension of warp knitting machine an ddiscussion of reasonable operating conditions[J]. Journal of Textile Research,1989,10(7):25-28.
[13] 陈跃华,冯勋伟,姜艺.编织重经织物时经纱张力分析[J].中国纺织大学学报,1996,22(6):88-93.CHEN Yuehua,FENG Xunwei,JIANG Yi. Analysis of warp tension in woven fabric[J]. Journal of China Textile University,1996,22(6):88-93.
[14] 汤振民.经编工艺中减少经纱张力波动的研究[J].国外纺织技术,1985(14):8-11.TANG Zhenmin. Study on reducing the tension fluctuation of warp yarn in warp knitting[J]. Textile Technology Overseas,1985(14):8-11.
[15] 张灵婕,缪旭红,蒋高明,等.经编张力补偿装置对经纱张力的影响[J].纺织学报,2016,37(11):126-129.ZHANG Lingjie,MIAO Xuhong,JIANG Gaoming,et al. Influence of warp knitting tension compensation device on warp tension[J] Journal of Textile Research,2016,37(11):126-129.