Abstract: An opening cylinder for an open-end spinning device has a core piece over which the opening cylinder is fastened on a drive shaft and a tooth-set carrier supporting the tooth-set. The tooth set-carrier is fastened to the core piece by a clip connection in the axial direction. Additionally, the opening cylinder has a device for the form-fitting connection of the core piece and tooth-set carrier in the circumferential direction with a projecting part and a corresponding recess. The tooth-set carrier is fastened with a clip connection to a core piece of the opening cylinder in the axial direction. The tooth-set carrier has a projecting part for the form-fitting connection with the core piece in circumferential direction.

Abstract: An open-end spinning device (1) with a spinning rotor (2) whose shaft end (11) is supported by an aerostatic axial bearing (10) with an air gap (18) located between a bearing plate (17) of the axial bearing (10) and the shaft end (11). The aerostatic axial bearing (10) comprises a bearing plate (17) and a throttle device (19) made from a porous graphite material placed before the bearing plate (17). The throttle device (19) is an stamped pressed, tablet-shaped molding with largely homogenous porosity. In a process for manufacturing an aerostatic axial bearing (10) for a spinning rotor (2) of an open-end spinning device (1), a throttle device (19) made from a porous graphite material is placed before the axial bearing (10). The throttle device (19) is stamped pressed in a press tool as a tablet-shaped molding.

Abstract: A disintegrator apparatus for textile machines is provided that includes a plurality of teeth at a tooth spacing (LZ) of no greater than about 20 mm and preferably less than about 12 mm. The teeth generally include two sections. A first section is located at a tooth apex and exhibits a positive or at least a vertical forward rake (WB). A second section is at an incline, falling in the direction of movement of the operative equipment. The separation distance between the apex of the tooth and a tangential joining point of the vertical tangent creates a transition zone between the first and second sections and forms a technologically effective tooth height (Ht). The ratio of the technologically effective tooth height to the spacing between teeth no greater than about 1.

Abstract: The invention is relative to opening devices for spinning machines, especially open-end spinning machines, that are provided with clothing wires or rings for separating fibers of a supplied sliver. The opening device is characterized in that the clothing wires are pre-bent in accordance with the geometry of a carrier ring, or the clothing rings have the desired geometry of the finished part, and that the particular workpiece surfaces have an at least two-coating construction in which an outer coating is a hard-substance coating. The hard-substance coating consists entirely or partially of especially hard hard-substance components and rests on a substrate layer located underneath it.

Abstract: The invention relates to an open-end spinning machine with a plurality of spinnboxes and rotors (2) arranged in them, in which each spinnbox comprises, among other things, a cover (1) arranged on a front side of the particular associated rotor (2). At least one limitation device (7) for limiting the rotor movement in the direction of the longitudinal axis of the rotor onto the cover (1) is provided, which limitation device (7) covers a circular segment of a possible circular contact area between rotor (2) and cover (1).

Abstract: A device is disclosed, comprising a microwave resonator, for or on a spinner preparation machine with drawing gear (2) for drawing fiber material (FB), in particular a carding, drawing or combing machine, whereby the resonator (30) is embodied for connection to a measuring device (16) for measuring the strip density (mass per unit length) or the strip thickness and/or the dampness of the fiber material (FB), continuously passing through the resonator chamber (31). Said device is characterized in that the resonator (30) is integrated in a functional group (20; 120; 220; 320; 420) of the spinner preparation machine which is typical for the machine. A spinner preparation machine, in particular a carding, drawing or combing machine, is further disclosed which comprises a corresponding device.

Abstract: The invention relates to a method for the maintenance of a plurality of processing stations (13) of a textile machine (10), whereby at least one first maintenance unit (14a-d) can travel alongside the processing stations (13) in order to service and/or control the processing stations (13). The maintenance unit (14a-d) may be moved into an optimized readiness position when none of the processing stations (13) needs to be serviced and/or controlled by the maintenance unit. Alternatively, the direction of travel in which the maintenance unit (14a-d) is to travel to the next processing station (13) in need of service is determined, whereby the direction of travel depends on the totality of processing stations in need of maintenance.

Abstract: The invention uses microwaves in the spinning industry in order to determine the band mass of an elongated, substantially non-twisted fiber structure. In addition, a method for measuring the sliver mass from the frequency detuning and the damping of resonance signals of a microwave sensor while taking into consideration the moisture of the fiber structure with a computer is suggested. Likewise, a corresponding spinning preparation machine and a laboratory device for measuring the sliver mass are part of the invention. Lastly, a method and a spinning preparation machine for recognizing foreign matter in a moved fiber structure with the aid of microwaves is suggested.

Abstract: For the piecing of a yarn in an spinning device, various computation formulas are stored in a control device into which calculated values as well as special data converted into numerical values relating in particular to the fiber material, the yarn and the spinning element are first entered to compute and select settings for operations relevant to the piecing process. A feeding device feeding a fiber sliver to the spinning device is first brought to a high pre-feeding speed by means of such pre-programmed values and converted data. From this pre-feeding speed, the feeding speed is greatly decelerated in steps to its piecing feeding speed in coordination with the release of the yarn to be fed back into the spinning element.

Abstract: An exchangeable component of a textile machine with a surface coating or a treated surface within which color elements are embedded is provided. The color elements in the surrounding area of the coating or the treatment, upon radiation by a light of a first wave length or of a first spectral range of wave lengths, emit a light of a second predetermined wave length or a second predetermined spectral range of wave lengths. Furthermore, a detection apparatus is provided with a source of illumination for the radiation of such a component and for the detection of the emitted light.

Abstract: A procedure and apparatus for start-up spinning of a thread in an open-end spinning apparatus is provided. A first and second auxiliary roll-pair are presentable within a thread course during start up spinning. A source of a suction air stream within the spinning apparatus is positioned below the first and second roll-pairs. The source of suction air stream creates a suction flow of air to induce the thread end into the spinning apparatus for start up spinning. A control center is in communication with the first and second roll-pairs, so that the control center controls them. A thread storage unit is positioned between the first and second roll-pairs proximal to the course of the thread. The thread storage unit is in communication with the control center so that the thread storage unit is activated to store and release the thread during start up spinning.

Abstract: The invention relates to a method for the control of the travel movement of at least one service unit at a rotor-spinning machine, whereby the service unit services and/or controls an operating zone assigned to it containing a plurality of processing stations of the textile machine. The service unit is moved in the direction of its assigned operating zone when the detected position is located outside the assigned operating zone. In addition, the size of the operating zones is determined as a function of the workload of the service units and/or of the work efficiency of the service units.

Abstract: Different improvements of a spinning preparation machine are proposed to measure the fiber sliver thickness or the fiber sliver cross-section of at least one fiber sliver by means of one or several microwave sensors. One improvement is characterized by compressing means and special mechanical guiding elements that can be installed before, after and/or in the microwave sensor. It is also proposed to install a pair of conveyor rollers after a microwave sensor that can be designed in particular as an input roller pair of the subsequent drafting equipment. Furthermore, proposals are made for the calibration of the (at least one) microwave sensor.

Abstract: A sawtooth wire to be laid in a groove of a shredding-element-carrier of a disintegrating roll of an open-end spinning apparatus is brought into a shape, which essentially represents that shape, which the sawtooth wire is to assume on the shredding-element carrier. The sawtooth wire is preshaped on a dummy body, the circumference of which predominately conforms to that of the shredding-element carrier, or the sawtooth wire is directly preshaped on the shredding-element carrier of the disintegrating roll. The preshaped sawtooth wire is subsequently hardened, preferably inductively with the aid of a high frequency alternating current with a frequency of more than 1000 kHz. In this manner, a disintegrating roll is made, the abrasion resistant shredding element of which, after the preshaping, i.e., after is securement on the shredding-element carrier, is a hardened shredding element.

Abstract: The invention concerns a textile machine (10) with a multiplicity of workstations (41a-d), one electronic device (42) per workstation, a central machine control (20, 22), a machine bus (25) for communication between the machine control and each or possibly a group (30a-d) of electronic device(s) and a sensor apparatus (43) for each workstation. A central evaluation unit (24) is provided for the assessment of sensor data from the sensor apparatuses (44), whereby the sensor data embraces continually measured characteristic values and/or the quality or signal data derived therefrom. The central evaluation unit (24) is connected by means of a first communication connection (23, 23?) with the machine control (20, 22) or so connected by the machine bus (25).

Abstract: The invention concerns a cleaning apparatus for the cleaning of a spin rotor of a spinning station leaning head which can be insertably presented to the spin rotor and on which cleaning head are placed at least two scraper elements. In accord with the invention, the at least two scraper elements are pneumatically extendable, wherein the position of the two scraper elements are so secured on the outer circumference of the cleaning head, that the sum of the contact forces which are exerted from the scraper element in the radial direction onto the rotor is zero, or practically zero.

Abstract: The invention relates to a textile machine with at least one first service unit capable of traveling along a guide rail alongside a plurality of processing stations of the textile machine, and with a control system for the control of the travel movement of the service unit. The control system can determine data on travel path delimitations, predetermined return points and/or obstacles available, and the control system controls the travel movement as a function of the data of the travel path delimitations, the predetermined return points and/or the obstacles.

Abstract: An exchangeable insert is proposed as auxiliary equipment for a housing of a disintegrating apparatus of an open-end spinning apparatus. The insert is adaptable, so that the disintegrator roll housing can be made to conform to various spinning conditions. In a partial zone, in accord with this proposition, the insert replaces a circumferential wall of the disintegrator roll housing, wherein the insert extends itself into to a zone of a contamination separation opening of the disintegrator roll housing. Its extension in the axial direction is so chosen, that it, at least partially, forms a portion of the circumferential wall of the disintegrator in the area of the contamination separation opening.

Abstract: A method and device for the evaluation of signals of a sensor, in particular of a microwave sensor, is proposed for the detection of the thickness, mass, density and/or moisture of at least one fiber sliver moving relative to the sensor on drafting equipment. A high-frequency unit assigned to the sensor produces a number of first digital signals in digital form of the current state of the (at least one) fiber sliver. The method according to the invention is characterized in that a second digital signal, representing the current sliver thickness or sliver mass of the (at least one) fiber sliver and which is then used to control the drafting equipment and/or to judge the fiber sliver quality, is formed according to an algorithm from the first digital signals made available. In addition a suitable device for the evaluation of the signals of a sensor is proposed.

Abstract: The invention concerns an apparatus for the optimization of the regulation adjustment of a machine in spinning preparation, in particular a regulated draw frame, a carding machine, or a combing machine, to which one or more fiber bands are continually fed. The apparatus has at least one sensor which is positioned ahead of the feed end of a draw frame machine for the purpose of capturing the values of band thicknesses of one or more of the entering fiber bands. The apparatus also has at least one delivery end sensor located at the delivery end of the draw frame machine for the purpose of capturing the values of the band thickness of the produced fiber band of a first draw frame operational mode. The apparatus also includes a microprocessor for the comparing of the captured values of the at least one delivery end sensor to those of at least a second draw frame operational mode, whereby the second draw frame operational mode does not represent the normal operational mode of the draw frame machine.