METHOD FOR PREPARING A WORKSTATION FOR THE RESUMPTION OF THE SPINNING PROCESS ON AN AIR-JET SPINNING MACHINE AND AN AIR-JET SPINNING MACHINE FOR PERFORMING THE METHOD

摘要

The invention relates to a method for preparing a workstation for the resumption of the spinning process on an air-jet spinning machine, in which after an interruption of spinning, the yarn (5) is guided back into its working path behind a spinning nozzle (4), or the yarn (5) is stopped in controlled manner in its working path with the end of yarn (5) situated behind the spinning nozzle (4), the end of yarn (5) is introduced into an outlet opening (41) of the spinning nozzle (4), whereupon the yarn (5) is transported by the reverse motion with the aid of the spinning nozzle (4) and a feeding device (3) of fibers as far as to a guide channel (2) in front of the spinning nozzle (4), whereupon a spinning-in end of yarn (5) is formed on the yarn (5) in the guide channel (2) and simultaneously the formation of yarn reserve is started in an underpressure yarn storage device (73) in front of a winding device (9) of yarn (5). The reverse motion of the yarn (5) to the guide channel (2) is performed by the reverse motion of a drawing-off mechanism (6) of yarn (5) of the workstation. The invention also relates to an air-jet spinning machine with means for preparing a workstation for the resumption of the spinning process, whereby each workstation of the air-jet spinning machine comprises a drafting mechanism (1) of sliver (0), which is with its outlet (11) aligned with an inlet (30) of a feeding device (3) of fibers, which is with its outlet (31) aligned with an entry (40) of fibers to the spinning nozzle (4), whereby the space between the outlet (11) of the drafting mechanism (1) of sliver (0) of fibers and the inlet (30) of the feeding device (3) of sliver (0) is aligned with an exit portion (22) of a guide channel (2), which is at a certain distance from its exit portion (22) provided with a device (20) for the preparation of the spinning-in end of yarn and the workstation is provided with means for the unwinding of the yarn (5) against the direction in which the yarn (5) moves upon its formation. The workstation is provided with means for controlled reverse displacement of the formed spinning-in end of yarn (5) through the guide channel (2) to a defined position behind the device (20) for the preparation of the spinning-in end of yarn.