Abstract: For an improvement of the coating of disintegrator rolls, an accessory wire in the area of a tooth base is coated with a reduced quantity of hard material granulate as compared to the coating on the tooth. With the proposed coating, the advantage is gained that a precoated accessory wire, without damaging the coating, can subsequently be wound on an accessory wire carrier.

Abstract: A disintegrator roll for use in a textile spinning machine, such as an open-end spinning machine, includes a roll body releasably mounted onto a drive shaft. A fittings carrier with associated fittings is releasably mounted on the roll body. A releasable connection apparatus is operably disposed between either the fittings carrier and the roll body or the roll body and the drive shaft. The connection apparatus is actuated by an axial force applied generally parallel to the drive shaft.

Abstract: For the design of an opening cylinder (1) for an open-end spinning device where the opening cylinder (1) has a face (11), it is proposed that the base body (12) of the opening cylinder (1) be located on the end of a shaft (2) away from the bearing (21), whereby an axial distance (9) exists between the base body (12) and the bearing (21). To expose the gap (22) for maintenance purposes, the clothing holder (3) is designed so as to be removable in the axial direction across the bearing (21), whereby the face (11) towards the bearing (21) is formed on the clothing holder (3).

Abstract: In an arrangement for application in open-end rotor spinning, an opening roller is housed in a swivel housing. The swivel housing can, together with the assembled opening roller, be removed from the arrangement for open-end rotor spinning when the machine is in operation. The opening roller, due to its mass, continues to rotate after it has been separated from the tangential belt which drives it. A locking device is provided which prevents the removal of the swivel housing when the opening roller is rotating. This results in the opening roller being at a standstill when the swivel housing is removed. The risk of injury caused by a still rotating opening roller is eliminated.

Abstract: A rotor shaft of an open-end spinning rotor is provided with a peg-like shaft end having a reduced diameter. The shaft end has a front-end supporting surface which can be arranged to a step bearing, said supporting surface being provided with a wear-resistant insert. The reduced diameter of the peg-like shaft end is at least 0.68 times the diameter of the rotor shaft. In addition, the reduced diameter of the shaft end measures at least 0.82 times the length of the peg-like shaft end.

Abstract: The invention relates to a friction roller and to a support for the driving of a bobbin on a textile machine, whereby the friction roller drives the bobbin by means of friction on its outer circumference. A support is installed on the friction roller and is provided with a friction coating. The support is made in several parts and consists of curved sections. Each of the sections reaches around the friction roller by more than 180°.

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: The invention concerns an arrangement of service positions for maintenance apparatus, which can travel on a guide rail along a multiplicity of similar workstations on a first side of a textile machine, wherein a maintenance apparatus in a first service position at the elevation of a machine framing of the textile machine can be pivoted away from, or transversely withdrawn from the guide rail. Per side of the textile machine, at least two maintenance apparatuses are exclusively assigned thereto, whereby the guide rail on the first side, at least at one end of the textile machine, is elongated beyond the textile machine and a second service position is placed on the elongated guide rail. In this way, it becomes possible, with a large number of workstations to assure the shortest possible duration of a standstill, wherein in the case of a failure or preventive unkeep of one maintenance apparatus, another maintenance apparatus can serve a workstation in a short time.

Abstract: The invention relates to a method and an apparatus to monitor a yarn piecing joint on a spinning machine with a plurality of piecing stations to which a piecing robot equipped with a yarn piecing apparatus with adjustable yarn piecing speed can be presented, whereby each spinning station or the piecing robot is provided with a yarn monitoring apparatus to monitor the yarn quality. The piecing robot and the yarn monitoring apparatus of the spinning station are connected via a communication system through which the piecing parameters of the piecing robot are transmitted to the yarn monitoring apparatus.

Abstract: The invention concerns an exchangeable component (3) of a textile machine with a surface coating (18a) or a treated surface, wherein invented color elements are embedded, so that the color elements, that is to say, the surrounding area of the coating (18a) or the treatment, upon radiation by with light of a first wave length or of a spectral range of wave lengths (102), emit light of a second predetermined wave length (103) or a second predetermined spectral range of wave lengths. Furthermore, a detection apparatus (142, 143) is provided with a source of illumination for the radiation of such a component (3) and for the detection of the emitted light (103).

Abstract: The present invention relates to a cleaning device of a rotor spinning unit with at least one cleaning head and an extensible device to extend and retract the cleaning head. The cleaning head is replaceable and connected to the extensible device.

Abstract: To improve the known step bearings for the support of open-end spinning rotors, it is proposed to design the bearing body with a machine-side support and a rest for the spinning rotor. According to the invention, a flat bearing surface constituting one end of the bearing body is provided as the rest for the spinning rotor. The flat bearing surface is preferably designed as a bearing plate of an aerostatic step bearing capable of being subjected to compressed air.

Abstract: A method for the evaluation of signals of a sensor (3, 4), 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 (2) moving relative to the sensor (3, 4) on drafting equipment (1), whereby a high-frequency unit (13) assigned to the sensor (3, 4) produces a number of first digital signals in digital form on the current state of the (at least one) fiber sliver (2). The method according to the invention is characterized in that a second digital signal, representing the current sliver thickness or the sliver mass of the (at least one) fiber sliver (2) and which is then used to control the drafting equipment (1) 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 (3, 4) is proposed.

Abstract: The invention concerns an open-end spinning apparatus with a spin-rotor, the shaft of which is supported by an aerostatic, radial bearing with an air gap between the bearing assembly and the shaft. The construction material for the bearing surface of the spin-rotor and/or the bearing surface of the radial bearing is polyimide or aramid.

Abstract: The invention concerns an apparatus for the optimization of the regulation adjustment of a machine in a spinning works, in particular a regulated draw frame (1), a carding machine, or a combing machine, to which one or more fiber bands (2) are continually fed. The said apparatus has at least one sensor (3) which is positioned ahead of the feed end of the draw frame for the purpose of capturing the values of band thicknesses of one or more of the entering fiber bands (2) and has at least one sensor (30) located at the delivery end of the draw frame for the purpose of capturing the values of the band thickness of the produced fiber band (2′) in a first draw frame machine as well as the same function in at least a second, defined draw frame machine, whereby the second draw frame machine does not represent the normal operation of the draw frame machine.

Abstract: Proposed is a support disk bearing for an open-end spinning rotor. The support disk possesses a body, which, on its circumferential surface, is designed to receive a cover layer. The cover layer is comprised of rubber, in particular nitrile rubber (NBR). In an advantageously favorable formulation, the cover layer contains an additive for the reduction of its electrical resistance.

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.

Abstract: For the design of an opening cylinder (1) for an open-end spinning device where the opening cylinder (1) has a face (11), it is proposed that the base body (12) of the opening cylinder (1) be located on the end of a shaft (2) away from the bearing (21), whereby an axial distance (9) exists between the base body (12) and the bearing (21). To bare the (22) for maintenance purposes, the clothing holder (3) is designed so as to be removable in axial direction across the bearing (21), whereby the face (11) towards the bearing (21) is formed on the clothing holder (3).

Abstract: During the pneumatic holding of a yarn spun from fibers, the intensity of the air stream holding the yarn is changed to adapt to the prevailing working conditions. Such a change in intensity of this air stream can take place here in adaptation to different work phases and/or to the character of the held yarn. In order to reduce the intensity of the air stream, a secondary air stream may be fed to it at a point which is not reached by the yarn held by the air stream, or the cross-section of a pneumatic device conveying the air stream is changed. The pneumatic device is associated with an air control device which influences the intensity of the air stream and is connected to a control device which can be adjusted or programmed to take various working conditions into account. By means of the air control device an opening can be controlled through which the line can be connected to the atmosphere surrounding it.

Abstract: In open-end spinning and in coordination with predetermined operating phases, a yarn suction pipe by means of which a yarn extending from a bobbin is to be received temporarily is brought successively into different operating planes. The yarn suction pipe is imparted a defined operational movement as a function of the operating planes occupied and in coordination with the current operating phase. The operating positions of the yarn suction pipe that can be moved into at least two operating planes are defined in such a manner that when the yarn suction pipe is in its operating position in a first operating plane, a yarn extending from the bobbin pressing on a winding roller to the yarn suction pipe crosses the traversing range of the yarn traversing guide. However, the yarn is outside the traversing range of this yarn traversing guide when the yarn suction pipe assumes its operating position in an additional operating plane.