Device for piecing a thread in a spinning rotor of an open-end spinning device

摘要

Introducing/removing device (30) of the end of the thread (F) for an automatic service trolley (C) for spinning units of open-end spinning machines comprising a moving structure (31), capable of taking a gripping member (32) into various working positions and equipped with a gripping member (32) consisting of a pair of parallel motorised rollers (32a,32b) pressed against each other according to their generatrices, equipped with actuation in commanded and controlled rotation in the two directions, to introduce and re-extract the end of the thread (F) in the rotor.