PROCESS AND DEVICE FOR PIECING THREADS ON AN OPEN-END FRICTION SPINNING DEVICE

PCT No. PCT/DE86/00234 Sec. 371 Date Jan. 5, 1987 Sec. 102(e) Date Jan. 5, 1987 PCT Filed Jun. 5, 1986 PCT Pub. No. WO87/00214 PCT Pub. Date Jan. 15, 1987.To piece up to a spinning station consisting of two friction spinning elements (101) driven in the same direction and forming a nip, a thread 30 is conveyed to the nip so that said thread 30 reaches the thread forming zone (104) with its free thread end first. Feeding of the fibers into the nip is controlled so that the thread end (300) comes into contact with the fibers simultaneously with its reaching the thread forming zone (104). The friction spinning elements (101) are covered by a cover (130) which incorporates a fiber feeding channel (24). The cover, in addition to the fiber feeding channel (24), is equipped with a thread insertion slit (14) extending essentially in the longitudinal direction of the friction spinning elements (101). The thread insertion slit (14) extends from the outside of the cover (130) up to its inside, and from the end on the draw-off side up to the outlet end (240) on the side away from the drawoff. A thread holding device ( 7) which holds the thread (30) essentially parallel to the thread insertion slit (14) is installed outside the nip. The thread holding device (7) holds the thread (30) away from the nip, at the end of the friction spinning elements (101) closest to the draw-off for as long as the thread end (30) has not reached the nip.