Abstract: The invention relates to a rotor spinning machine and to a method for operating a rotor spinning machine with a control device, an open-end rotor spinning device and a supply unit feeding at least two fiber slivers into the open-end rotor spinning device, which supply unit has an opening roller for opening fiber slivers and a feed apparatus with a first and a second feed roller, which can be operated independently of one another by means of the control device, for a first fiber sliver and a second fiber sliver.

Abstract: The invention relates to a spinning means for a work station of a textile machine having a plurality of work stations, comprising a first spinning means identification for identifying and/or authenticating the spinning means at a work station. Furthermore, the invention relates to a textile machine having a plurality of work stations and a method for operating the same, wherein the work stations have replaceable spinning means, each having a first spinning means identification. In order to provide a spinning means that has a particularly forgery-proof spinning means identification, it is provided that the first spinning means identification is formed by at least one specific, sensor-detectable material property of a spinning means material and/or a coating applied to the spinning means material.

Abstract: A drafting system for a spinning machine, which drafting system has a drafting system unit, and to such a drafting system unit, having at least one weighting arm, which can be pivoted between an operating position and an open position by a repositioning device. In order to provide a drafting system and a drafting system unit for a drafting system for a spinning machine, the drafting system unit having a particularly simple design and permitting user-friendly operation, it is provided that the at least one weighting arm is connected to a retaining rod for conjoint rotation, which retaining rod is mounted on a retaining rod holder for rotation about the longitudinal axis of the retaining rod by the repositioning device.

Abstract: A textile machine producing cross-wound packages with a plurality of identical workstations which are arranged in the area of the longitudinal sides of the textile machine and each of which has a winding device, and equipped with a tube supply device which includes a central tube magazine and at least one tube conveyor belt installed in the area of the longitudinal sides of the machine, in which case a cross-wound package can be removed, if necessary, from the winding device of the relevant workstation on the textile machine producing cross-wound packages and can be transferred to a cross-wound package transport device running the length of the machine, and an empty tube provided on the tube conveyor belt of the tube supply device can be inserted by means of a tube gripper into the winding device of the relevant workstation.

Abstract: Method for monitoring a textile machine having a plurality of workstations and a textile machine having a plurality of workstations, the textile machine having: a textile machine control unit, designed to capture different production figures of the individual workstations and to check whether the production figures exceed specified limit values; an input unit for inputting the limit values and selecting at least one production figure to be checked out of the set of production figures to be checked; and an indicating unit. The indicating unit has a plurality of signal units, which are arranged on the textile machine control unit and/or the workstations in question, are associated with the individual workstations and are designed in such a way that the result of the check of the at least one selected production figure to be checked for exceeding the allocated, specified limit value is indicated by different light signals.

Abstract: A process for operating an air-jet spinning device such that after a spinning interruption the yarn end of the spun yarn accumulated on a take-up package is picked up by a suction nozzle and transferred to a yarn end preparation device. The yarn end is processed in the yarn end preparation device and is then transferred to a first area of an outlet opening of the spinning cone, the yarn end is pneumatically transported to a second area of an inlet opening of the spinning cone and is positioned there within the air-jet spinning device at a distance in front of the inlet opening, the drafting system of the relevant workstation is raised and the sliver is conveyed through a sliver guide of the nozzle block into the second area of the inlet opening of the spinning cone and there spun onto the prepared yarn end of the spun yarn.

Abstract: A yarn guide channel for arrangement between a spinning device and a winding device of a spinning machine producing a take-up package in which a yarn guide channel forms a passage channel for a yarn running between the spinning device and the winding device. The yarn guide channel has a plurality of pneumatically engageable channel sections coupled to each other, having at least a first channel section, a second channel section and a channel connection section disposed between the first and second channel sections, in which the channel connection section has a mouth for supplying compressed air into the yarn guide channel for generating a pneumatic overpressure in the first channel section associated with a pneumatic suction effect in the second channel section.

Abstract: A spinning device, for a ring spinning or ring twisting machine, having a spinning spindle for holding a yarn tube such that the yarn tube is oriented coaxial with a spindle axis, a spinning ring for guiding, on the outside thereof, a yarn to be wound on the yarn tube, the spinning ring being arranged coaxial with the spindle axis, and a spinning-ring guiding unit arranged coaxial with the spindle axis, wherein the spinning ring is floatingly fixed at the spinning-ring guiding unit in the spindle-axis direction. In order to provide a spinning device and a spinning machine having a spinning device which allow a spinning process to be reliably performed without limitation of the spindle speed and without use of a ring traveller, a balloon limiter tube is arranged coaxial with the spindle axis such that the yarn is guided on an inner face of the balloon limiter tube.

Abstract: A textile machine for producing cross-wound packages, the machine being equipped with a plurality of workstations arranged next to one another on both longitudinal sides of the machine and having a cross-wound package transport apparatus. The cross-wound package transport apparatus has a first transport device, arranged between the two rows of workstations for conveying cross-wound packages, and a handling apparatus for moving cross-wound packages from the first transport device to the second transport device. The handling apparatus is arranged between the end regions of the first transport device.

Abstract: A method for monitoring air flows required for handling a thread and/or fiber band in a spinning machine, and to a spinning machine unit. At least one air flow-generating source is connected to an air flow duct. An air volume flow measuring unit is connected to an evaluation device for data transmission. The air volume flow is measured by the air volume flow measuring unit and the measurement result is transmitted to the evaluation device. The number of productive and/or non-productive spinning positions is detected. An air volume flow target value is determined by the evaluation device. The air volume flow target value is compared with actual value of the measured air volume flow by the evaluation device, the evaluation device making an evaluation on the basis of the comparison as to whether there is an unacceptable deviation between the actual value and the air volume flow target value.

Abstract: A method for optimizing the operation of a spinning machine with regard to quality and productivity is provided. An apparatus, comprising a control device and the spinning machine is provided. A yarn having specified yarn properties is produced, a quality parameter of the yarn is sensed during the spinning operation, a parameter for setting the production speed is specified, the quality parameter and the parameter for setting the production speed are evaluated, and the production speed is set in dependence on a target variable, the target variable comprising the quality parameter.

Abstract: The invention relates to a vibration-damping apparatus (18) for a winding device (4) of a textile machine (1), which textile machine produces cross-wound packages (5), the vibration-damping apparatus being provided for reducing the vibrations that occur at the pivotably mounted package cradle (8) during the winding operation of the textile machine (1). According to the invention, in order to obtain a vibration-damping apparatus which is unproblematic both with regard to safety and with regard to contamination and which also always ensures a vibrationally relatively stable state of the package cradle, the vibration damper is in the form of a friction damper (20) having friction forces of different intensity depending on the working direction, the friction forces acting as the cross-wound package (5) lifts off during the winding operation being greater than the friction forces acting during the return of the cross-wound package (5).

Abstract: The invention relates to a device (1) for individualizing fibers of a supplied fiber sliver end and to a spinning device (2) comprising such a device (1). The device (1) comprises a first hollow body section, to which pressure can be applied and which comprises an inlet channel segment (3) for receiving and guiding a supplied fiber sliver end together with a fluid in the direction of an unraveling channel segment (6) arranged downstream thereof, and the unraveling channel segment (6), which communicates with the inlet channel segment (3) and is arranged downstream thereof, for unraveling the fiber sliver end supplied together with the fluid into individual fibers. The unraveling channel segment (6) forms an annular channel (10) which communicates with the inlet channel segment (3).

Abstract: The invention relates to a shaft bearing for mounting a spinning rotor of a rotor spinning machine, with a double-row rolling bearing, which comprises two rolling-body rows that roll on their inner side without an inner ring, on two inner bearing races arranged at a distance from one another on a rotor shaft, and on their outer side on outer bearing races of two separate outer rings. According to the invention, the outer rings are mounted resiliently in a shaft bearing housing so as to provide a shaft bearing for mounting a spinning rotor of a rotor spinning machine with high reliability, even at rotational speeds of more than 110,000 revolutions per minute, which shaft bearing also allows trouble-free operation of a rotor spinning machine equipped with the shaft bearing.

Abstract: A compactor device for compacting a sliver that is drawn by a drafting system of a textile machine is provided. In accordance with the invention, it is envisaged that the compactor device is designed as a channel compactor and has a guide channel, designed in the shape of a screw in the running direction of the sliver, wherein the entry opening of the guide channel is widest horizontally and the exit opening of the guide channel is arranged rotated at least 30° with respect to the entry opening.

Abstract: Fibre band opening device for an open-end spinning device having a feed tray, a fibre band pull-in cylinder, and an opening roller having an opening roller clothing, the tips of which lie on a circular cylindrical surface, a support surface for fixing a fibre tuft, which is processed by the opening roller by combining, the distance of which support surface from the circular cylindrical surface is tapered in the fibre transport direction to a minimum distance, and a transition area having a convex curvature between the clamping surface and the support surface. The support surface has a distance of between 4 and 8 millimetres from the circular cylindrical surface at the beginning of the support surface with respect to the fibre transport direction, and the minimum distance of the support surface from the circular cylindrical surface is less than 1.5 millimetres.

Abstract: A service unit is provided as well as a method for controlling a service unit performing various service activities at one workstation on a textile machine having several workstations, in which case the service activities and movement orders to be carried out by the service unit are prioritized by a controller unit. In order to provide a method for controlling a service unit performing various service activities and movement orders as well as a service unit with a controller device for carrying out movement orders and service orders, which enable adjustment and maintenance work to be carried out quickly on the service unit, there is provision for avoidance maneuvers and parking orders to be carried out with the highest priority and manually set service activities and movement orders to be carried out with high priority.

Abstract: A textile machine producing take-up packages, comprising a storage area for wound take-up packages, a detecting element for measuring the weight of each take-up package to be placed on the tray, a summing element for adding up the measured weights of the take-up packages to be placed on the storage area, and an output element for outputting an output signal if the sum of the measured weights of the take-up packages exceeds a predefined threshold value.

Abstract: A textile machine with a plurality of similar workstations as well as display means and a central control device, wherein the display means is connected to the central control device and/or a workstation control device. The textile machine comprises a display means, which is designed as an LED light bar, a section of the LED light bar is assigned respectively to a workstation, and the LED light bar displays the respectively produced yarn batch and/or operating states of the respective workstation.

Abstract: A textile machine for producing cross-wound packages, comprising a plurality of workstations, each of which has at least one pneumatic consumer, and comprising a suction system which has at least one vacuum source to which the pneumatic consumers of the workstations are connected via a machine-length vacuum duct arranged in the region of the central axis between two rows of workstations. In order to modify such a textile machine producing cross-wound packages in such a way that it is ensured that the required minimum spinning vacuum is always available at all workstations of the textile machine during spinning operation, according to the invention the textile machine producing cross-wound packages has, in addition to the vacuum duct, a machine-length bypass duct which is also installed in the region of the central axis and is arranged above chain ducts for service units.