须条内纤维头端分布对纺纱牵伸过程的影响

Influence of the Fiber-End Distribution on the Spinning Drafting Process

为了讨论纺纱牵伸区内纤维分布形式的规律,利用离散理论建立了一个牵伸改进模型。通过分析须条内纤维头端间隔及其分布对牵伸区内各类纤维分布的影响情况,阐述了输出条干不匀的产生机理。研究结果表明,纤维头端间隔及其分布形式对须条的牵伸过程有显著性的影响,牵伸区内各类纤维分布的波动是产生条干不匀的原因,其中快速浮游纤维根数及其占比是导致条干不匀增大的最主要因素,需要在牵伸过程中重点控制。

In order to study the fiber distribution in the spinning drafting zone, an improved drafting model was set up based on the discrete theory. The mechanism of output unevenness was illustrated by analyzing the effect of fiber end interval and distribution on the different fiber distributions in the drafting zone. The results indicate that the interval and distribution of fiber end have a significant influence on the drafting process. The fluctuation of different fiber distributions is the reason of output unevenness, the number as well as the ratio of fast-floating fiber is the major factor on the increasing of unevenness, which should be controlled tightly during the drafting process.