Abstract: A method for operating a spindle (2) of a two-for-one twisting or cabling machine which has an adjustable balloon-yarn-guide-eye (9), wherein for the operation of the spindle (2) under production conditions, the balloon-yarn-guide-eye (9) is adjusted, on the basis of a measured value (i) correlating with the energy consumption of the spindle drive (3), to a first operating position (AP1), in which a position-dependent minimum of the energy consumption of the spindle drive (3) is reached.

Abstract: A yarn withdrawal nozzle 13 for an open-end rotor spinning device 1 with at least two ferromagnetic projections for magnetically coupling to permanent magnets 31 arranged in depressions of a holder in the cover element 8 of a rotor housing 2, wherein the ferromagnetic projections correspond in their arrangement and dimensions to the depressions 30 in the holder. The ferromagnetic projections are formed directly in the yarn withdrawal nozzle 13 made from a non-magnetic material.

Abstract: A spinning rotor (3) for an open-end spinning device (1) operating in particular at high rotor speeds with a rotor cup (26), having a rotor bottom (6) and an opening (30) and having an annular wall section (31) designed as a fiber sliding wall. The rotor cup (26) in the transitional area between the rotor bottom (6) and the annular wall section (31) has a support collar (9) pointing away from the opening (30) of the rotor cup (26).

Abstract: A method for operating a spindle (2) of a two-for-one twisting or cabling machine, in which an outer yarn (5) is drawn off a first feed package (7) and the spindle (2) rotates in a yarn balloon (B), wherein the spindle (2) comprises a device (6) for influencing the balloon yarn tension of an outer yarn (5), which is connected to a control circuit (18), and has a spindle pot (19) for receiving a second feed package (15), a yarn deflection device (20), a balancing system (9) for forming a twisting or cabling point as well as a spooling and winding device (12). The drive of the yarn balloon (B) is performed via a fixed throw-off point (21) on the yarn deflection device (20).

Abstract: A device for determining the diameter of a yarn balloon (B) formed by a running yarn at a workstation (1) of a textile machine wherein the workstation (1) is provided with a mechanical, contact scanning sensor (22), which is designed and arranged so that during the operation of the workstation (1) it is positioned by a yarn forming the thread balloon (B) in an operating position dependent on the diameter of a thread balloon (B), and a sensor device (24) is provided which detects the operating position (BS) of the scanning sensor (22).

Abstract: A yarn traversing device (11) for a spooling device (4) of a textile machine producing cross-wound bobbins (1) comprises a yarn guide (25), which is connected by an endless tensioning means designed as a toothed belt (30) to a single drive (34), wherein the toothed belt (30) rotates in a largely closed housing (23) of the yarn traversing device (11) and is guided by guide wheels (31 or 32) arranged laterally next to a traversing area (B) and a drive wheel (41) connected to the electric motor single drive (34). The guide wheels (31 or 32) each have a smooth running surface (33), which is largely resistant to dirt, over which the toothed belt (30) runs with its toothing (38).

Abstract: A method for continuously processing a thread-like material with a plurality of method steps and a device for carrying out the method, wherein a feed mechanism (10), a treating (35) and depositing device (36), a transporting device (14), a thermosetting mechanism (32) and a length compensating mechanism (37) are arranged in a common closed system (5) and the closed system (5) differs from the surroundings in its interior by at least one first physical property and sub-systems (31, 32, 33, 35, 36, 37) that are shielded from one another are present within the system (5) for the various method steps, to which sub-systems supply mechanisms (25, 26, 27) are connected, which produce at least partially different temperatures in the sub-systems (31, 32, 33, 35, 36, 37) as the second physical property.

Abstract: A device for shaping at least one thread-like material (1), which is formed in a forming unit and is deposited on a transporting device (6) for the subsequent thermosetting process, wherein a retaining means (4, 14, 15, 22) and a drivable, curved depositing tube (5) are arranged one after the other in the thread transporting direction.

Abstract: An open-end spinning rotor (1), comprising a rotor shaft (2), a rotor cup (3) and a coupling device (4) with a receiving element (5) connected to the rotor shaft (2) and an axle element (6) connected to the rotor cup (3). The coupling device (4) comprises three clamping bodies (7, 8, 9), arranged between a contour (10) of the receiving element and a contour (11) of the axle element. The contour of the receiving element, the contour of the axle element and the clamping bodies are configured such that by driving the rotor shaft, a relative rotational movement is produced between the receiving element and the clamping bodies and the axle element, in that owing to the relative rotational movement, the clamping bodies are clamped between the contour of the axle element and the contour of the receiving element to non-positively transmit a drive torque.

Abstract: A yarn treatment chamber for thermal treatment of a running yarn, with a center zone, in which a pressurized hot, gaseous or vaporous medium acts on the yarn, and end zones on both sides of the center zone, in which a cooling, gaseous medium is active. The end zones have a yarn inlet or outlet openings with a yarn sluice, which seals the associated end zone and the yarn treatment chamber. The yarn inlet and outlet openings (2, 3) are arranged such that the yarn (14) must change direction, and the yarn treatment chamber (21 has yarn deflection means (12) to guide the yarn (14) between the yarn inlet and outlet openings (2, 3). Both the yarn sluice (23A) and the yarn sluice (23B) are accessible without problems to operating staff at an ergonomically favorable height below the yarn deflection means (12) of the yarn treatment chamber (21).

Abstract: A method for operating an open-end rotor spinning machine having a plurality of workstations, usually a large number, each including a spinning device with a rotor housing, to which negative pressure can be applied, in which a spinning rotor (23) revolves at a high rotational speed, to produce a yarn, as well as a winding device to produce a cross-wound bobbin (18), wherein the connection of the workstations to a central negative pressure supply can be selectively switched off. The application of negative pressure to the rotor housing is limited to the spinning devices which are producing yarn as well as the spinning devices which are repiecing.

Abstract: A rotor bearing comprising at least one support disc pair, which is comprised of two support discs (40, 41, 42, 43), which are arranged in such a way that they form a wedge gap, and a spinning rotor (3) with a rotor shaft (4), which is mounted in the wedge gap. The invention is to provide a support disc bearing that is easy to produce. For this purpose, a rolling bearing (45) is arranged in the base body (44) of the support discs (40, 41, 42, 43) and the rolling bearings (45) are in each case applied on a fixed bearing bolt (50, 51, 52, 53). The invention furthermore relates to the support disc (40, 41, 42, 43) and a method for producing the support disc (40, 41, 42, 43).

Abstract: A method for operating an open-end rotor spinning machine having a plurality of workstations, usually a large number, each including a spinning device with a rotor housing, to which negative pressure can be applied, in which a spinning rotor (23) revolves at a high rotational speed, to produce a yarn, as well as a winding device to produce a cross-wound bobbin (18), wherein the connection of the workstations to a central negative pressure supply can be selectively switched off. The application of negative pressure to the rotor housing is limited to the spinning devices which are producing yarn as well as the spinning devices which are repiecing.

Abstract: A yarn sluice for sealing a pressurized yarn treating chamber in which a traveling yarn is thermally treated, comprises yarn guide elements in the region of a yarn inlet and outlet openings of the treating chamber forming a yarn guide channel sealed by the traveling yarn during operation. At least one of the guide elements is positionable for adaptation to the mean thickness of the traveling yarn in various predetermined positions. Means is provided for temporary adaptation of the yarn guide channel to yarn defects. At least one of the guide elements (26, 27) is steplessly adjustably mounted for adaption to the mean thickness of the traveling yarn (14). A sealing element (28), which can be placed on the first and the second yarn guide element (26, 27), extends along the yarn guide channel (25), for closing it and for reacting resiliently to defects in the traveling yarn (14).

Abstract: An open-end spinning rotor (1), comprising a rotor shaft (4), a rotor cup (2) and a coupling device (3) releasably connecting the rotor shaft (4) and rotor cup (2). The coupling device (3) has locking bodies (6), arranged in a holding element (5) and lock the rotor cup (2) and the rotor shaft (4) in the axial direction under centrifugal force during operation of the open-end spinning rotor (1). A resilient element (7) is associated with the locking bodies (6) and cooperates with the locking bodies (6) such that the locking bodies (6) also lock the rotor cup (2) to the rotor shaft (4) in the axial direction at a standstill. The holding element (5) is configured as a pin which is formed such that it produces a positive shaft-hub connection between the rotor shaft (4) and rotor cup (2) in conjunction with a correspondingly formed hub (8).