A method of controlling a yarn compensating arm at a workstation of a spinning machine, wherein the yarn is initially withdrawn from an intermediate vacuum storage device. Before emptying the yarn from the storage device, the compensating arm is deflected past its working and into an out-of-the-working-range position, wherein the yarn is captured by the compensating arm and also deflected to the out-of-the-working-range position to form a non-working yarn reserve. The compensating arm is retained by a force at the out-of-the-working-range position while the yarn is emptied from the storage device. Upon being emptied from the intermediate vacuum storage device, the yarn exerts a tensile force on the compensating arm that overcomes the retaining force causing the compensating arm to return to its working range position.

A yarn return unit for returning a yarn into a delivery unit of a textile machine during a piecing process includes a yarn-guiding section configured to guide and position the yarn with respect to the delivery unit. A blowing unit generates an air flow for returning the yarn from the yarn-guiding section into the delivery unit, the blowing unit defining a flow direction of the air flow. The yarn-guiding section includes an open contour that defines an insertion area through which the yarn is inserted into the yarn-guiding section transversely to the flow direction of the air flow.

A method at a workstation of a spinning machine or winding machine supplies an auxiliary thread from a thread nozzle to a suction assigned to the workstation, the auxiliary thread stretched between the thread nozzle and the suction. The auxiliary thread is severed to form a thread section protruding into the suction and a thread section extending into the thread nozzle, wherein the thread section protruding into the suction is carried away by the suction. The thread section extending into the thread nozzle is grasped with a thread receiver such that the thread section extending into the thread nozzle extends between the thread nozzle and the thread receiver. The thread section extending into the thread nozzle is severed to form a thread section remaining in the thread nozzle and a thread section coming from the thread receiver. The thread section coming from the thread receiver is transferred to the suction of the workstation. The thread section coming from the thread receiver is grasped with a capture arrangement adjacent a tube at the workstation prior to starting a process of winding the thread section coming from the thread receiver onto the tube.

The invention relates to a maintenance device (13a-13e) for servicing adjacent work stations (11) of a textile machine (1), in particular a spinning machine, comprising an operating unit (2a-2e), which features at least one operating component (14) for servicing the work stations (11), and with a guide unit (9), by means of which the maintenance device (13) can be transported on a driving rail (3) along the work stations (11) and which defines a direction of travel (4) of the maintenance device (13). Thereby, the maintenance device (13) can be transported from a maintenance position (I), in which one of the work stations (11) can be serviced by the maintenance device (13a-13e), into an inspection position (II), in which the maintenance device (13a-13e) can be inspected. For the transport of the maintenance device (13a-13e) from the maintenance position (I) into the inspection position (II), the operating unit (2a-2e) can be pivoted with respect to the guide unit (9), and/or the at least one operating component (14) can be moved (in particular, can be pivoted) with respect to the operating unit (2a-2e).

With a method for controlling a piecing process for piecing up a yarn at a textile machine, in particular a spinning machine, by means of a piecing device, a multiple number of work steps as preparation for the actual piecing operation are carried out successively in a chronological sequence. In each case, a predetermined time period is allocated to the work steps. For at least one of the work steps, the predetermined time period can be varied, whereas the current time period of the work step is determined as a function of a yarn characteristic of the currently produced yarn and/or as a function of a utilization of the piecing device. A control unit is designed to operate the textile machine according to this method.

With a method for controlling a setting process for re-setting a yarn (G) at a textile machine, in particular a spinning machine (1), by means of a setting device (5), a multiple number of work steps as preparation for the actual setting operation are carried out successively in a chronological sequence. In each case, a predetermined time period is allocated to the work steps within which the respective work step is carried out. For at least one of the work steps, the predetermined time period can be varied, whereas the current time period of the at least one work step is determined as a function of a yarn characteristic (GC) of the currently produced yarn (G and/or as a function of a utilization of the setting device (5). A textile machine features a control unit (12), which is designed to operate the textile machine according to this method.

The invention relates to a method for the resumption of the spinning process on an air-jet spinning machine, in which after an interruption in the spinning process has occurred, yarn (5) is guided back to its working path behind a spinning nozzle (4), or the yarn is stopped in a controlled manner in the working path with the end of yarn behind the spinning nozzle, the end of yarn (5) being introduced to the outlet opening (41) of the spinning nozzle (4), whereupon the yarn (5) is transported by a reverse motion by means of the spinning nozzle (4) and a feeding device (3) of sliver (0) as far as to a guide channel (2) before the spinning nozzle (4), where on the yarn (5) in the guide channel (2) a spinning-in end of yarn is formed and the yarn (5) reserve starts to be created in an underpressure yarn storage device (73) in front of the winding device (9) of yarn. Before, simultaneously with or after the formation of the spinning-in end of yarn (5) the winding of the yarn (5) on the bobbin (90) is started, whereupon before the yarn (5) reserve from the underpressure yarn storage device (73) is used up, the yarn starts to be withdrawn (5) by the drawing-off mechanism (6), whereby following the start of the withdrawal of the yarn (5) the yarn is clamped by the rotating feeding device (3) of sliver (0) and the feed of new fibers through the drafting device (1) to the feeding device (3) of sliver (0) is started.