An open-end spinning machine having a plurality of workstations, each workstation has a spinning apparatus for producing a thread, a thread draw-off device for drawing off the thread from the spinning apparatus, a storage nozzle, a winding apparatus for producing a cross-wound bobbin, and a suction nozzle, to which negative pressure can be applied. The open-end spinning machine is equipped with at least one service unit, serving a plurality of the workstations and has an auxiliary-thread delivery device for delivering an auxiliary thread and an auxiliary-thread draw-off, which are used in a piecing process at a workstation to be served. The auxiliary-thread draw-off can be operated in such a way that the auxiliary-thread draw-off speed of the auxiliary-thread draw-off for drawing off the pieced auxiliary thread has a speed offset, which takes into account the thread draw-off speed of the thread draw-off device and at least one additional correction factor.

A method is provided for determining a functional status at a workstation of a textile machine that includes a plurality of the workstations, wherein each workstation includes at least one drive associated with a treatment device configured at the workstation to treat a fiber material. The method includes measuring a load variable of the drive and determining the functional status of the treatment device based on the measured load variable.

The invention relates to a method for operating a textile machine (1) with a multiple number of similar work stations (2), whereas, with the assistance of work stations (2) during the normal operation of the same, yarn is produced or is rewound by a delivery coil onto a receiver coil, and whereas normal operation is initiated at the individual work stations (2) after a stop of the textile machine (1), or is interrupted at certain time intervals by a service operation in the form of a spinning-in process, a sleeve changing process or a yarn joining process. In accordance with the invention, it is proposed that

at least one of the specified service operations is divided into several partial sequences, and that a pending partial sequence is carried out independently of the other partial sequences of the corresponding service operation, if the required energy resources for carrying out the pending partial sequence are available. In addition, the invention relates to a textile machine.

The invention relates to a method for operating a textile machine (1) with a multiple number of similar work stations (2), whereas, with the assistance of work stations (2) during the normal operation of the same, yarn is produced or is rewound by a delivery coil onto a receiver coil, and whereas normal operation is initiated at the individual work stations (2) after a stop of the textile machine (1), or is interrupted at certain time intervals by a service operation in the form of a spinning-in process, a sleeve changing process or a yarn joining process. In accordance with the invention, it is proposed that

at least one of the specified service operations is divided into several partial sequences, and that a pending partial sequence is carried out independently of the other partial sequences of the corresponding service operation, if the required energy resources for carrying out the pending partial sequence are available. In addition, the invention relates to a textile machine.

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 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 device (1) for drawing in and intermediately storing a thread (2), comprising a suction chamber (3), wherein the suction chamber (3) includes an entry opening (8) and an exit opening (9), which define a direction of flow, wherein negative pressure can be applied to the exit opening (9) in order to generate an air flow (4). Moreover, the device comprises a depositing surface (5) arranged in the suction chamber (3), on which the thread (2) can be intermediately stored, and a flow element (6) arranged in the suction chamber (3), with the aid of which the air flow (4) can be directed through the suction chamber (3). The suction chamber (3) is divided into a first region (14) and a second region (15) with the aid of the depositing surface (5) and the flow element (6) is displaceable between a first position, in which the air flow (4) is guided through the depositing surface (5) and through the second region (15), and a second position, in which the air flow (4) is guided past the depositing surface (5) through the first region (14). A textile machine comprising a plurality of workstations arranged next to one another in the longitudinal direction of the textile machine is characterized in that the workstations each comprise such a device. In a corresponding method for drawing in and intermediately storing a thread (2), the thread (2) is sucked into the suction chamber (3) with the aid of an air flow (4) and is intermediately stored on a depositing surface (5) arranged in the suction chamber (3). The air flow (4) is directed through the suction chamber (3) with the aid of the flow element (6). The suction chamber (3) is subdivided into a first region (14) and a second region (15) with the aid of the depositing surface (5) and the flow element (6) is displaced between the described positions.

A device (1) for drawing in and intermediately storing a thread (2), comprising a suction chamber (3), wherein the suction chamber (3) includes an entry opening (8) and an exit opening (9), which define a direction of flow, wherein negative pressure can be applied to the exit opening (9) in order to generate an air flow (4). Moreover, the device comprises a depositing surface (5) arranged in the suction chamber (3), on which the thread (2) can be intermediately stored, and a flow element (6) arranged in the suction chamber (3), with the aid of which the air flow (4) can be directed through the suction chamber (3). The suction chamber (3) is divided into a first region (14) and a second region (15) with the aid of the depositing surface (5) and the flow element (6) is displaceable between a first position, in which the air flow (4) is guided through the depositing surface (5) and through the second region (15), and a second position, in which the air flow (4) is guided past the depositing surface (5) through the first region (14). A textile machine comprising a plurality of workstations arranged next to one another in the longitudinal direction of the textile machine is characterized in that the workstations each comprise such a device. In a corresponding method for drawing in and intermediately storing a thread (2), the thread (2) is sucked into the suction chamber (3) with the aid of an air flow (4) and is intermediately stored on a depositing surface (5) arranged in the suction chamber (3). The air flow (4) is directed through the suction chamber (3) with the aid of the flow element (6). The suction chamber (3) is subdivided into a first region (14) and a second region (15) with the aid of the depositing surface (5) and the flow element (6) is displaced between the described positions.

A winding station of a textile machine for producing cross-wound bobbins includes a base unit, a cover unit, and a bobbin holder configured to hold the cross-wound bobbin. A traversing device is configured to lay a thread in a crosswise manner on the cross-wound bobbin. A thread finding device is configured to find a thread end on the cross-wound bobbin. The base unit at least partially covers the cover unit, and the cover unit is movable with respect to the base unit between a working position for laying the thread and seeking the thread end and a cleaning position for cleaning the winding station. At least portions of the thread finding device are configured on the cover unit. A method is also provided for operating the winding station.

An open-end spinning machine and control method are provided for cleaning a spinning rotor of a spinning device in which at least one cleaning measure is carried out on the spinning rotor with the aid of a pneumatic or a mechanical cleaning device. With a control unit associated with the open-end spinning machine, settings are specified for the cleaning device to carry out the cleaning measure, wherein the settings are empirically determined based on one or more operational parameters of the spinning rotor. Operational parameters are stored in a memory bank associated with the control unit. The specific settings for carrying out the cleaning measure for a particular spinning rotor are automatically determined by reference to the operational parameters stored in the memory bank that are applicable to the particular spinning rotor.