A method of preparing a workplace for renewal of spinning on a jet spinning machine and the jet spinning machine for its implementation

摘要

The yarn (5), after spinning interruption, is led back to the working path behind the spinning jet (4) or the yarn (5) is controllably stopped in the working path with the end of the yarn (5) behind the spinning jet (4). The end of the yarn (5) is fed into the outlet opening (41) of the spinning jet (4), whereupon the yarn (5) is transported, using the backward motion, by the spinning jet (4) and the fibre feeding device (3) to the guide channel (2) in front of the spinning jet (4), whereupon, on the yarn (5) in the guide channel (2), there is formed spinning end of the yarn (5) and, simultaneously, forming a stock of the yarn in the vacuum container (73) of the yarn (5) in front of the winding device (9) of the yarn (5) is started. The backward motion of the yarn (5) to the guide channel (2) is conducted by means of the reversible movement of the towing device (6) of the yarn (5) of the workplace. The jet spinning machine comprises, at each workplace, the drafting mechanism (1) of the strand (0) of fibres, which is, with its outlet (11), assigned to the inlet (30) of the fibre feeding device (3), which is, with its outlet (31), assigned to the inlet (40) of the fibres into the spinning jet (4). The space between the outlet (11) of the drafting mechanism (1) of the strand (0) of fibres and the inlet (30) of the feeding device (3) of the strand (0) is assigned with the mouth (22) of the guide channel (2), which is, at a distance form its mouth (22), provided with the device (20) for preparing the spinning end of the yarn. The workplace is equipped with means for the reverse unwinding of the yarn (5) against the direction in which the yarn (5) is moved during its formation. The workplace is further provided with means for a controlled backward shift of the formed spinning end of the yarn (5) through the guide channel (2) into the defined position behind the device (20) for preparation of the spinning end of the yarn.