Abstract: 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.

Abstract: A method for operating a work station of a textile machine that produces or rewinds yarn in a normal operation, wherein the normal operation is interrupted. The method includes performing at least one service step for restoring the normal operation, wherein a service result is specified for the service step. A standard service operation is carried out with a service device until the service result has been achieved or a predetermined number of failed attempts has been reached. When the predetermined number of failed standard service operation attempts has been reached, an extended service operation is carried out.

Abstract: A method optimizes production of a rotor spinning machine having a plurality of identical spinning units, with each spinning unit having a spinning rotor driven by a rotor drive at a rotor speed to produce yarn at a delivery speed. A permissible range with a minimum delivery speed and a maximum delivery speed for the delivery speed of the spinning units is specified. Operation of the spinning units is started with a starting delivery speed within the permissible range. Current production capacity of the spinning units or the rotor spinning machine is continuously calculated. Current delivery speed of the yarn is regulated as a function of the current production capacity in such a manner that a maximum production capacity is achieved. A rotor spinning machine in accordance with method is also provided.

Abstract: A spinning machine (1) features a multiple number of work stations (3) arranged side by side between two front-side ends (2) of the spinning machine (1) on at least one longitudinal side of the spinning machine (1), each of which features a multiple number of work elements for the production and winding of a yarn (31), whereas the work elements comprise at least one feed device (4), one spinning chamber (5), one draw-off device (6) and one winding device (7). The spinning machine (1) features drives for driving the work elements and a suction device (8) for generating negative pressure at the work stations (3). The suction device (8) includes at least one negative pressure source (9) and at least two negative pressure channels (10), which extends in the longitudinal direction of the spinning machine (1) only over one part of the work stations (3). Thereby, each work station (3) features an individual drive (11), in particular an individual electrical drive (11), for the draw-off device (6).

Abstract: A rotor spinning machine has a multiple number of work stations arranged side by side in the longitudinal direction of the rotor spinning machine between two front-side ends of the rotor spinning machine, each of which work stations has a multiple number of work elements for the production and winding of a yarn. The work elements comprise at least one feed device, one severing device, one spinning rotor along with one winding device. Furthermore, the rotor spinning machine has a suction device for producing a negative spinning pressure at the work stations.

Abstract: The present invention relates to a method for handling a yarn end (10) of a cross-wound bobbin (2) at a winding station (1) of a textile machine producing a cross-wound bobbin, whereas the cross-wound bobbin can be held and driven in a bobbin holder (3), a thread (6) is laid in a cross-wise manner on the cross-wound bobbin by means of a traverse device (5) and a suction nozzle (7; 12) is subjected to negative pressure and the thread end is sucked into the suction nozzle through a suction mouth (8; 13). In accordance with the invention, it is proposed that the suction mouth is moved relative to the suction nozzle, such that the distance between the suction mouth and the cross-wound bobbin is changed, in order to be able to find the thread end and/or to be stretched between the suction mouth and the cross-wound bobbin and that the stretched thread is moved to a unit (9) of the textile machine for further processing.

Abstract: 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.

Abstract: The present invention relates to a method for cleaning a textile machine (21) consisting of a multiple number of identical work stations (2), whereas a cleaning request is issued for a work station (2) and the work station (2) to be cleaned is approached and cleaned by a mobile cleaning device (1). In accordance with the invention, it is proposed that the cleaning request is issued depending on the events that have occurred at the respective work stations (2) since the last cleaning process.

Abstract: 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.

Abstract: The invention relates to a method for operating a spinning machine with a multiple number of spinning stations, whereas, in the normal case, the individual spinning stations are supplied with a fiber material and produce a yarn from this, whereas, upon the occurrence of predefined events, yarn production is interrupted at any or all spinning stations, whereas the spinning stations at which yarn production has been interrupted are, when required, spun in with the assistance of a spinning-in process in order to once again start up yarn production, and whereas the respective spinning-in is carried out with the assistance of handling tools with their own spinning machines.

Abstract: With a method for operating a spinning machine (1), with a multiple number of work stations (2) arranged next to each other, each work station (2), as a work element (3, 28, 4, 10, 16, 17, 18), features at least one spinning unit (3) with a spinning device (28), one winding device (4) and handling elements (10, 16, 17, 18) of their own work station for spinning back in the thread (F). If the spinning process is interrupted, a thread end (6) on the coil side is provided in a defined receiving position (A) at the work station (2). For spinning back in a thread (F), the thread end (6) on the coil side is cut to length by work elements (3, 28, 4, 10, 16, 17, 18) of the work station (2), in particular the handling elements (10, 16, 17, 18) of their own work station, received from the receiving position (A), prepared for spinning back in and spun in.

Abstract: A cleaning head (1) of a cleaning device (2) for cleaning a spinning rotor (3) featuring a fiber slide wall (4), a fiber collection groove (5) and an open edge (6) can, by means of a feed device of the cleaning device (2), be fed into a predetermined cleaning position (I) in the interior of the spinning rotor (3). The cleaning head (1) features at least one cleaning element formed as a scraper element (7), which is arranged on the cleaning head (1) in such a manner that, in the predetermined cleaning position (I) of the cleaning head (1), it is fed to the open edge (6) of the spinning rotor (3). A cleaning device (2) features a corresponding cleaning head (1) for cleaning a spinning rotor (3). With a method for cleaning a spinning rotor (3) by means of a cleaning device (2), which features such a cleaning head (1), after the feed of the cleaning head (1) into the cleaning position, the open edge (6) of the spinning rotor (3) is cleaned by means of a scraper element (7).

Abstract: A method interrupts yarn production on a spinning machine having at least one spinning point having an inlet for a fiber material and an outlet for the yarn made from the fiber material, and wherein the spinning machine comprises a delivery device for feeding the fiber material into the spinning point, a take-off device for drawing off the yarn out of the spinning point, a winding device for winding up the produced yarn, and a yarn monitoring unit for monitoring at least one yarn parameter. Yarn production is interrupted upon detecting a defined deviation of the monitored yarn parameter from a target value, upon changing bobbins at the winding device, and/or prior to switching off the spinning machine.

Abstract: A method is provided for interrupting yarn production on a spinning machine upon detecting a defined deviation of a monitored yarn parameter from a target value, upon changing bobbins at a winding device, and/or prior to switching off the spinning machine. The feed speeds of the delivery device, the take-off device, and the winding device are gradually reduced to a stop in order to interrupt the yarn production, wherein the reducing takes place such that an end of the produced yarn is located within the spinning point after the reducing is completed.

Abstract: The spinning station of a spinning machine includes a yarn end disposal means, arranged between the outlet of the spinning device and the winding device, and with the aid of which an end section of the produced yarn is separated from the rest of the yarn and eliminated. Furthermore, a process for removing an end section of a yarn at a spinning station of a spinning machine prior to the subsequent piecing process is proposed, wherein the end section is gripped, cut off, and subsequently eliminated from the area of the spinning station with the aid of a yarn end disposal means arranged between the outlet of the spinning device and the winding device.

Abstract: The invention relates to a method of operation for an air jet spinning machine, which is characterized in that the spinning process is interrupted when a yarn fault is detected, and subsequent to the interruption of the spinning process, a piecing process is initiated which is at least partly carried out by the spinning station and in which a number of yarn process and handling devices directly assigned to the spinning station are applied. Furthermore, an air jet spinning machine is proposed which permits such a piecing method.

Abstract: The method and corresponding device of yarn braking are provided by means of an attending device provided with a vacuum tube into which the end of the yarn is sucked in before commencement of braking. At drawing off from the vacuum tube, the yarn is braked between the braking surfaces of a stationary brake friction member and a moving brake friction member, which are arranged on the attending device displaceably to the track of the yarn. For generating the braking force, the moving brake friction member moves towards the stationary brake friction member and fits against it at a contact abscissa or a contact surface.

Abstract: The invention relates to a method of operation for an air jet spinning machine, which is characterized in that the spinning process is interrupted when a yarn fault (18) is detected, and subsequent to the interruption of the spinning process a piecing process is initiated which is at least partly carried out by the spinning station (2) and in which a number of yarn process and handling devices directly assigned to the spinning station (2) are applied. Furthermore, an air jet spinning machine is proposed which permits such a piecing method.

Abstract: The inventions relates to the method of yarn braking especially at renewal of spinning in a working position of an air jet spinning machine by means of attending a device provided with a vacuum tube (2), into which before commencement of braking there is the end of the yarn (100) sucked in, which at drawing off from the vacuum tube (2) is braked between the braking surfaces of a stationary brake friction member (50) and a moving brake friction member (30), which are arranged on the attending device displaceably to the track of the yarn (100), while for generating the braking force the moving brake friction member (30) moves towards the stationary brake friction member (50) and it fits against it at a contact abscissa (301) or a contact surface (302).

Abstract: A spinning machine has a spinning point, that includes a spinning device with an entry for a fibre material and an outlet for a produced yarn, as well as a feeding device for feeding the fibre material to the spinning device and a winding device for winding on the produced yarn. The spinning point includes a yarn end disposal means partly arranged between the outlet of the spinning device and the winding device, and with the aid of which an end section of the produced yarn is able to be separated from the rest of the yarn and eliminated. Furthermore, a process for removing an end section of a yarn at a spinning point of a spinning machine prior to the subsequent piecing process is proposed.