Patent ID: 6101803
Filing Date: 2000-08-15
Classification: D01H

Abstract:
A process for piecing a yarn end at a spinning station of an open-end rotor spinning machine, said spinning station comprising a feed roller for feeding a sliver, an opening roller for combing the sliver to single fibers, and a spinning rotor,said process comprising the following steps:stopping the feed roller after a yarn break has occurred, while the opening roller is still rotating,starting the feed roller for a short pre-feed time span to thereby present the end of the sliver in the form of a fiber beard to the rotating opening roller for the purpose of renewing the fiber beard,removing the single fibers combed from the fiber beard during the pre-feed time span as waste,reversing the feed roller so far back after completion of the pre-feed time that the fiber beard leaves an effective area of the opening roller,and re-activating the feed roller and performing the actual piecing.