A device for piecing a thread at a workstation of a textile machine includes a suction nozzle configured to pick up a thread end of the thread from a bobbin, the suction nozzle including an entry opening for the thread. A feeder unit is movable with respect to the suction nozzle and includes a cover element configured to close the entry opening in a first position (I) of the feeder unit and to unblock the entry opening in a second position (II) of the feeder unit. The cover element includes a thread-guiding element having an open contour.

In a method for cleaning a spinning rotor (4) of a spinning device (1) of an open-end spinning machine, at least one cleaning measure (RM) is carried out on the spinning rotor (4) with the aid of a pneumatic and/or a mechanical cleaning device (7), wherein settings (E), with the aid of which the at least one cleaning measure (RM) is carried out, are predefined by a control unit (24) of the open-end spinning machine. Various parameter (P) are stored in a memory bank (25). Moreover, previously empirically determined settings (E) for carrying out the cleaning measure (RM), which are suitable for the particular parameters (P), and/or rules (R) for determining settings (E) which are suitable for the particular parameters (P) are stored. The settings (E) for carrying out the at least one cleaning measure (RM) are automatically determined by the control unit (24) with the aid of the memory bank (25) depending on presently given parameters (P). In the case of an open-end spinning machine comprising at least one spinning device (1) including a spinning rotor (4), comprising at least one cleaning device (7), and comprising a control unit (24), the control unit (24) is designed for carrying out the described method.

In a method for cleaning a spinning rotor (4) of a spinning device (1) of an open-end spinning machine, at least one cleaning measure (RM) is carried out on the spinning rotor (4) with the aid of a pneumatic and/or a mechanical cleaning device (7), wherein settings (E), with the aid of which the at least one cleaning measure (RM) is carried out, are predefined by a control unit (24) of the open-end spinning machine. Various parameter (P) are stored in a memory bank (25). Moreover, previously empirically determined settings (E) for carrying out the cleaning measure (RM), which are suitable for the particular parameters (P), and/or rules (R) for determining settings (E) which are suitable for the particular parameters (P) are stored. The settings (E) for carrying out the at least one cleaning measure (RM) are automatically determined by the control unit (24) with the aid of the memory bank (25) depending on presently given parameters (P). In the case of an open-end spinning machine comprising at least one spinning device (1) including a spinning rotor (4), comprising at least one cleaning device (7), and comprising a control unit (24), the control unit (24) is designed for carrying out the described method.

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.

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 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.

A drafting device for a textile machine, in particular an air-jet spinning machine, wherein the drafting device can have a plurality of roller pairs which can be driven differently from one another. The roller pairs can be designed and arranged to guide a sliver between a top roller and a bottom roller of the roller pairs during their rotational operation in order to stretch the sliver. The drafting device can be designed and configured to carry out a piecing process after the sliver has been severed in the drafting device. In order to optimize a spinning process, it is provided that the drafting device is designed and configured to engage at least two roller pairs via their drive in a defined manner during the piecing process.

A drafting device for a textile machine, in particular an air-jet spinning machine, wherein the drafting device can have a plurality of roller pairs which can be driven differently from one another. The roller pairs can be designed and arranged to guide a sliver between a top roller and a bottom roller of the roller pairs during their rotational operation in order to stretch the sliver. The drafting device can be designed and configured to carry out a piecing process after the sliver has been severed in the drafting device. In order to optimize a spinning process, it is provided that the drafting device is designed and configured to engage at least two roller pairs via their drive in a defined manner during the piecing process.

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.

A spinning station of a spinning machine for producing a thread from a sliver. A thread end is taken up by a take-up device and transferred to a preparation device downstream from a vortex chamber of the spinning device, the thread end is subsequently treated in the preparation device and then transferred to the vortex chamber, a drafting system for supplying a sliver to the vortex chamber is powered up, wherein an exit roller pair of the drafting system is accelerated to a predetermined draw-off speed, and the sliver is spun onto the thread end in the vortex chamber and a draw-off device for drawing off the thread spun in the vortex chamber is powered up and accelerated up to the draw-off speed. The speed of the exit roller pair and/or of the draw-off device increases non-linearly and/or approaches the predetermined draw-off speed non-linearly around the end of powering up.