Textile machine with a service unit and collision preventing method

摘要

An open-end spinning machine (10) has a rail (15, 16) mounted maintenance unit (14a, 14b) which passes a series of work stations. The first maintenance unit has a detector (23) which locates an obstruction (14a. 14b, 26) in one direction of its path. The detector esp. emits a signal specifying the distance remaining to the obstruction. A second detector (24) operating in a single direction identifies the distance remaining to a further obstruction (14a. 14b, 26). Also claimed is an associated operating control process in which at least one of the two obstacle signals identifies the presence of and distance to an obstacle. In a preferred embodiment the system has a third obstacle detector. The non-contact obstacle detectors are linked to an emergency stop system.