New Theories Of Feeding And Condensation About Friction Spinning

This paper mainly researches the theories of fiber feeding, condensation and yarn formation structure of tradition friction spinning system. Basing on these deep researches, the experiment designs and creates a better new fiber feeding channel. The study shows that the new fiber feeding channel has a better property of fiber control, also it can improve fiber condensation state, yarn formation structure and yarn formation quality. This paper has sevaral contents:First it gives a brief introduction of the history, the production application fields and the prospects of friction spinning. Also it discusses the technological features, advantages, disadvantages and improving methods of friction spinning system. It gives a deep study of fiber process and condensation state of friction spinning; it gives a penetrating analysis of fiber movement characters and regulations of fiber feeding and condensation process. According to these studies and analysis, the experiment designs a new fiber feeding channel which should has better fiber control properties and can improve fiber feeding and condensation state in theory.Testing traditional friction spinning system fiber feeding state flow field ,it educes the fiber feeding state flow field distributing influence to fiber quality .It introduces a method of measuring fiber feeding state flow field.Second we analyze fiber arrange state in the parallel board in theory,and analyzes the flow field distributing bases on fiber movement. Fiber state is connected with flow field in the parallel board. In the passage, we mainly use a newly method of measuring fiber feeding state flow field distributing PIV. It is an instantaneous technique flowing plane planar velocity field.The final contrasting different condition (different wind pressure, different parallel board altitude), it can get the best parameter.