| 摘要 |
<p>The invention relates to a method for operating a workstation of a textile machine producing cross-wound bobbins, the workstation being equipped with a winding device for winding a cross-wound bobbin and a suction nozzle, which can be driven by a single motor and to pick up a thread that has run onto the surface of the cross-wound bobbin after a winding interruption, is positioned in a thread end pick-up position, in which the mouth of the suction nozzle has a predetermined spacing from the surface of the cross-wound bobbin, and in which the suction nozzle, proceeding from a pivoting position detected by means of a sensor, is positioned by carrying out a predeterminable number of increments of a single drive in the thread end pick-up position. According to the invention it is provided that a calibration of the pivoting path (21) of the suction nozzle (24) takes place in that the suction nozzle (24) is firstly brought at least once by means of its single drive (15) with its suction head (24') to abut a defined reference point (38; 39), the exact position of which is known, in that the suction nozzle (24) is then pivoted back up to the position detected by means of a sensor, the number of increments required in this case being determined, in that the number of increments determined in this case is compared with a number of increments previously determined in the same manner deemed to be the reference value and in that, with the aid of this comparison, a correction variable is produced, which is taken into consideration in the subsequent positionings of the suction nozzle (24) in the thread end pick-up position.</p> |
