Patent ID: 6079195
Filing Date: 2000-06-27
Classification: D01H

Abstract:
A procedure for re-equipping and simultaneously modernizing an open-end rotor spinning machine, said machine comprising:a plurality of spinning stations,a doffing arrangement movable in relation to the spinning stations, said doffing arrangement having devices for exchanging a full bobbin for an empty yarn-winding tube,means for interrupting the spinning process of a spinning station for the purpose of a doffing operation,and at least one piecing arrangement movable relative to the spinning stations and designed to piece a starting yarn at the spinning station after yarn-winding tube doffing operations with a new empty tube being exchanged for a full tube, which starting yarn is already connected to the empty yarn-winding tube,said procedure comprising replacing the piecing arrangement with a new piecing arrangement which is designed to accommodate piecing at a new empty tube which does not have a starting yarn connected thereto subsequently to connect a newly spun yarn to the empty yarn-winding tube.