Direct production of cable, for use e.g. in pneumatic tires, uses spindle, cabling head and turning unit and has friction-free path for one base thread into turning unit

摘要

In direct production of a cable, using a torsion spindle, cabling head and turning unit, from a first, ball-forming base thread (F1) and a second thread (F2) unwound from bobbin(s) located in a can above the spindle, on leaving the can the second thread reaches its inlet track (P1b) into the turning unit (12b) without passing through the eyelets or other friction-inducing guiding devices. Direct cable production from two component threads (F1, F2) uses a torsion spindle, penetrated at one end by the first base thread (F1), which projects radially at the plate level, turns and forms a ball. The second thread is unwound from bobbin(s) located in a can above the spindle and passes through a braking device. The threads are combined using a cabling head, rotated by the first thread, in which the threads are advanced and their tensions are equalized by passage through a turning unit having two tracks in which the threads are wound separately. The novel feature is that on leaving the can the second thread reaches its inlet track (P1b) into the turning unit (12b) without passing through the eyelets or other friction-inducing guiding devices. An independent claim is included for corresponding cabling apparatus, having a head with two turning units (12a, 12b), each having two tracks (P1a, P1b, P2a, P2b) in the form of a channel for winding the base threads (F1, F2). The tracks are formed by separate pulleys and synchronously mechanically connected. The units are located either side of the axis of the cabling head, on axes parallel to each other and perpendicular to the head axis. The base of the channel of at least one of the pulleys (P1b) is tangential to the head.