摘要
为探究大牵伸条件下,牵伸倍数的提高和牵伸分配对成纱条干的影响,提出变速点分布实验方法,通过纤维变速点分布的变化,分析成纱条干不匀。以9.7 tex棉纱为例,对比环锭细纱机与超大牵伸细纱机前区变速点分布曲线,在超大牵伸细纱机上以线密度1 000 tex粗纱分别纺制9.7、7.3、6.5 tex棉纱,并以9.7 tex棉纱为例,探讨不同牵伸倍数分配时,前区变速点分布曲线。结果表明:超大牵伸细纱机较环锭细纱机变速点分布更集中、稳定、前移,成纱条干更优;随牵伸倍数增大,变速点分布分散,成纱条干变差;纺9.7 tex棉纱,后区、中区牵伸为1.1、1.3时,前区变速点分布更集中前移,成纱条干最优。
In order to explore the effect of the enhancement of the drafting multiple and the collocations of drafting multiple on yarn unevenness,the experiment of the accelerated-point distribution is presented.The yarn evenness is analyzed by the change of fibers accelerated-point distribution.Firstly,9.7 tex cotton yarn was taken as example,and the accelerated-point distribution of the front draft zone of ring spinning frame and super high drafting ring spinning frame were compared.Then,9.7 tex,7.3 tex and6.5 tex cotton yarns were spun on the super high drafting ring spinning frame with the heavy weight1 000 tex of the roving.Lastly,9.7 tex cotton yarn was taken as example,under the different collocations of drafting multiple,the accelerated-point distribution of the front draft zone was explored.The results indicate that the accelerated-point distribution of the super high drafting ring spinning frame is more centralized and stable and fronted than ring spinning frame,and the yarn evenness is better.And along with the increasing of the drafting multiple,the accelerated-point distribution is more dispersed and the yarn evenness is worse.Moreover,9.7 tex cotton yarn is spun on 1.1 back draft and 1.3intermediate draft,the accelerated-point distribution of the front draft zone is the most centralized and fronted,and the yarn evenness is the best.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2016年第8期32-36,58,共6页
Journal of Textile Research
基金
纺织服装产业河南省协同创新项目(hnfz14002)
江苏省自然科学基金项目(BK2012254)
江苏省产学研项目(BY2014023-13
BY2012051
BY2013015-24)
江苏省科技成果转化项目(BA2014080)
广东省产学研项目(2013B090600038)
关键词
变速点分布
超大牵伸
成纱条干
牵伸倍数分配
accelerated-point distribution
super high drafting
yarn evenness
collocation of drafting multiple
