Abstract: An open-end spinning device of a rotor spinning machine has a spinning rotor with a rotor cup, in which fiber material is spun, and with a rotor shaft through which the spinning rotor is driven. A bearing is arranged in a contactless way with a drive to drive the spinning rotor. A rotor housing is provided in which the rotor cup is arranged and which is impinged with spinning negative pressure (pSU) during spinning operation through a negative pressure channel. A drive housing is provided in which the rotor shaft of the spinning rotor extends, and in which the drive and the bearing of the spinning rotor are arranged. The rotor housing and the drive housing are arranged spaced apart from one another in the open-end spinning device in the axial direction of the rotor shaft. In a method to operate such an open-end spinning device, the rotor housing is impinged with spinning negative pressure (pSU) during the spinning operation.

Abstract: A mounting carrier (3) for an opening roller (1) of an open-end spinning device features at least one part of a screw cap (8) comprising multiple positions, by means of which the mounting carrier (3) can be detachably fastened to a base body (2) of the opening roller (1) firmly connected to a drive shaft (6). Furthermore, the mounting carrier (3) features at least one part of a securing device (7). The securing device (7) includes a cover element (15) connected to the mounting carrier (3), by means of which at least one of the positions of the screw cap (8) can be indicated, and/or by means of which the mounting carrier (3) can be secured against unintentional detachment from the base body (2).

Abstract: The invention refers to an opening cylinder for an open-end spinning device with a core piece and a tooth-set carrier capable of rotating around a common rotating axis and detachably connected to one another by means of a quick-locking mechanism. The quick-locking mechanism is executed as a turn-lock fastener, so that the tooth-set carrier is detachably connected to it by means of a rotational movement around the rotational axis relative to the core piece.

Abstract: In an open-end spinning device (1) of a rotor spinning machine (2) having a spinning rotor (3) with a rotor cup (4), in which fiber material (6) can be spun, and with a rotor shaft (5) through which the spinning rotor (1) can be driven, and a bearing (13) preferably arranged in a contactless way, with a drive, especially an individual drive (14), to drive the spinning rotor (3), with a rotor housing (15), in which the rotor cup (4) of the spinning rotor (3) is arranged and which is impinged with spinning negative pressure (pSU) during spinning operation through a negative pressure channel (16) of the open-end spinning device (1), and with a drive housing (17), in which the rotor shaft of the spinning rotor extends, and in which the drive and the bearing (13) of the spinning rotors are arranged, the rotor housing (15) and the drive housing (17) are arranged spaced apart from one another in the open-end spinning device (1) in axial direction of the rotor shaft (5).

Abstract: The invention relates to an opening roller (1) for an open-end spinning device with a base body (2) that is detachably connected to a mountings carrier (3) by means of a screw cap (8), whereas the mountings carrier (3) for connecting to the base body (2) in respect of this is rotatable around an axis of rotation (A) from a disengaged position into an engaged position and, from this, further into an end-layer locking position. In accordance with the invention, the screw cap (8) includes at least one securing element (23), which prevents the mountings carrier (3) from, during operation, moving in respect of the base body (2) from the engaged position into the disengaged position.

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: A thread draw-off nozzle (1) for an open-end spinning device has a draw-off nozzle funnel (6) that contains a yarn deflection zone (3) for deflecting a yarn (5) produced during the yarn draw-off process. The draw-off nozzle funnel (6) has a two-part design, an external part (6a) containing a first area (3a) of the yarn deflection zone (3) and an internal part (6b) containing a second area (3b) of the yarn deflection zone (3). Both parts (6a, 6b) are made of different materials and/or have different coatings at least in the areas (3a, 3b) of the yarn deflection zone (3) or only one of the two parts (6a, 6b) has a coating.

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 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: A thread draw-off nozzle (1) for an open-end spinning device with a draw-off nozzle funnel (6) that contains a yarn deflection zone (3) for deflecting a yarn (5) produced during the yarn draw-off process. The draw-off nozzle funnel (6) has a two-part design, an external part (6a) containing a first area (3a) of the yarn deflection zone (3) and an internal part (6b) containing a second area (3b) of the yarn deflection zone (3). Both parts (6a, 6b) are made of different materials and/or have different coatings at least in the areas (3a, 3b) of the yarn deflection zone (3) or only one of the two parts (6a, 6b) has a coating.

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: 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: 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: The invention is relative to opening devices for spinning machines, especially open-end spinning machines, that are provided with garniture [fitting, trimming, clothing, set] wires (3) or garniture rings (11) for individualizing fibers of a supplied sliver. The opening device in accordance with the invention is characterized in that the garniture wires (3) are pre-bent in accordance with the geometry of the carrier ring (2), that the garniture rings (11) 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 or (13) 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 (12) located underneath it.

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: 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: 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.