Abstract

Controlling the acceleration points of floating fibers has a profound influence on yarn properties. To analyze the mechanism of a novel drafting device in ring spinning machine on the fiber movement, this paper comparatively analyzes the acceleration point distributions and corresponding yarn properties between the novel drafting devices and the traditional roller drafting device by means of the simulation and experiments. Both results of simulation and experiments prove that the novel drafting device of A-2 can significantly reduce the dispersion of the acceleration points due to its improved and extended friction filed. Besides, the experimental results show that the novel drafting system of A-2 obtains improved yarn evenness and breaking strength, which achieves the advanced level of Uster statistics. This lays the foundation for the research and the development of the novel drafting systems.

摘要

控制漂浮纤维的加速点对纱线性能有深远影响。为了分析环锭纺纱机中新型牵伸装置在纤维运动方面的机理，通过仿真和实验比较分析了新型牵伸装置与传统罗拉牵伸装置之间的加速点分布及相应的纱线性能。仿真和实验结果均证明，新型A-2牵伸装置由于改善了摩擦力并延长了摩擦力，因此可以显着减小加速点的分散。实验结果表明，新型的A-2牵伸系统提高了纱线的均匀度和断裂强度，达到了乌斯特统计的先进水平。