环锭纺双向延伸胶圈超大牵伸装置纺纱工艺研究
2022-04-15 11:49:52   来源：   评论：0 点击：

  关键词：环锭纺；超大牵伸；双向延伸胶圈；变速点；重定量；后区牵伸；线密度；强力；毛羽
中图分类号：TS103.82⁺3           文献标志码：A          文章编号：1001-9634(2022)01-0007-04
 
收稿日期：2021-03-16
作者简介：张  静（1993—），女，贵州遵义人，在读硕士研究生，主要从事环锭纺细纱超大牵伸装置的研究。
   
Abstract:In order to improve the spinning effect of super-large drafting device with heavy weight per unit in spinning，the structure of the designed four-roller super-large drafting device with bi-directional extended apron for ring spinning is analyzed.The mechanism of the device is discussed from aspects of the distribution of variable speed points，the elastic and tight edge of the apron，spinning in heavy weight per unit and the elongation of the hook fiber.Through the experiment，the indexes of different linear density yarns spinning in common drafting device with small weight per unit and super-large drafting device with heavy weight per unit are compared，and the spinning effects of heavy weight per unit spinning of 21.1 tex yarns with different drafting distribution are compared.The results show that in spinning small linear density yarn of super-large drafting device with heavy weight per unit，the strength and evenness of the yarn are better than those of the common drafting device with small weight per unit，but the number of hairiness is increased.By changing the drafting match in the drafting zone，the spinning effect of small weight per unit can be achieved by heavy weight per unit feeding，and the production efficiency of spinning frame is improved.It is pointed out that the four-roller super-large drafting device with bi-directional extended apron can make the drafting ratio of the back zone increased effectively by 2～3 times without changing drafting ratio of front zone，and it has a good application prospect in the field of spinning yarn with small linear density.
Key Words:ring spinning；super-large drafting；bi-directional extended apron；speed change point；heavy weight per unit；back zone drafting；linear density；strength；hairiness
 
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