Studies on package winding with modified traverse blades. Part I: Modification of existing system

Abstract

Yarn traversing with counter rotating blades is a well-established method of traversing the yarn, employed on several commercial winding machines. This method is mainly suitable for shorter traverse strokes and does not have positive control on yarn during traversing (especially at traverse extremes) as compared to other traversing systems. Moreover, yarn may be subjected to greater abrasion with traversing elements. This may lead to deficiencies such as lack of precision in yarn lay during package build-up that may be reflected in terms of poor package appearance. In this study, the blade profile of the existing yarn traversing mechanism employed on an assembly precision winder has been modified. Three modified blade profiles have been developed with the intention of improving control over yarn during traversing as well as at yarn transfer at traverse extremes from one blade to the other. Packages were built successfully with modified blade profiles. This paper summarizes developmental work of improving profiles of the original design of counter rotating blades to achieve the aforementioned intentions.