Abstract: An open-end rotor spinning device comprising a spinning motor rotatable at high speed inside a rotor housing subjected to low pressure and closable by a covering element. A single motor-driven opening cylinder rotates in a opening cylinder housing. A fiber guiding channel (18) includes an output-side channel section extending in a channel plate adapter whose installation position in the covering element is specified by its position with regard to the spinning rotor, and an input-side channel section positioned inside the opening roller housing such that the center longitudinal axes of the channel sections are angled relative to one another. The operable spinning disposition of the input-side channel section (30) is selectively adjustable with regard to the output-side channel section (31) of the fiber guiding channel (18) to relatively displace their respective center longitudinal lines (32, 33) by angles (?, ?) to obtain optimal yarn-dynamic values.

Abstract: The invention relates to an open end spinning device comprising a single-motor driven spinning rotor whose cup is rotationally actuated in the rotor housing which is negatively pressurized and closed by a cover element during a spinning process. According to said invention, the rotor house (2) is embodied in the form of a central element which is fixable to the frame of a textile machine and connects the control (3) of the spinning rotor (21) to the carrier (4) for the cover element (6) provided with a fibre band releasing device (23).

Abstract: A fiber guide channel for pneumatic transport of individual fibers combed from a sliver by an opening cylinder of an open end spinning device for delivery to a spinning rotor. The fiber guide channel is arranged in a cover element for the rotor housing and the input side of the fiber guide channel is matched in its width to the mountings of the opening cylinder. The inlet and the outlet openings of the fiber guide channel have a slot-like shape and the maximum extension (B) of the inlet opening extends parallel to the axis of the opening cylinder. The maximum extension (L) of the outlet opening of the fiber guide channel is rotated about an imaginary center line of the fiber guide channel by 90°±15° relative to the maximum extension (B) of the inlet opening. The fiber guide channel has a substantially cylindrical zone Z, between the inlet and outlet openings, with the cross-section of the fiber guide channel constantly decreasing from the inlet opening to the zone Z.

Abstract: An opening roller assembly for an open-end spinning device of a textile machine, wherein an opening roller (12) is mounted on a bearing shaft (17) which is fixed in a bearing bracket (14) of an opening roller housing (11) in such a manner that the shaft can be easily removed. A drive (28) for rotating the opening roller is provided by a single electrical motor formed as an external rotor. A contact lead device (18) is mounted on the bearing shaft and includes leads (19) which are connected to the electrical motor, and a contact shoe housing (50) is provided which includes contact shoes or contact pins (21) which are connected to a power supply (27) of a corresponding textile machine and which can be selectively brought into contact with the leads (19) of the contact lead device (18).

Abstract: An open-end rotor spinning device comprising a spinning motor rotatable at high speed inside a rotor housing subjected to low pressure and closable by a covering element. A single motor-driven opening cylinder rotates in a opening cylinder housing. An at least two-part fiber guiding channel (18) includes an output-side channel section extending in a channel plate adapter whose installation position in the covering element is specified by its position with regard to the spinning rotor, and an input-side channel section positioned inside the opening roller housing such that the center longitudinal axes of the channel sections are angled relative to one another. The input-side channel section (30) is mounted to enable a limited movement with regard to the output-side channel section (31) of the fiber guiding channel (18).

Abstract: A fiber guide channel for pneumatic transport of individual fibers combed from a sliver by an opening cylinder of an open end spinning device for delivery to a spinning rotor. The fiber guide channel is arranged in a cover element for the rotor housing and the input side of the fiber guide channel is matched in its width to the mountings of the opening cylinder. The inlet and the outlet openings of the fiber guide channel have a slot-like shape and the maximum extension (B) of the inlet opening extends parallel to the axis of the opening cylinder. The maximum extension (L) of the outlet opening of the fiber guide channel is rotated about an imaginary center line of the fiber guide channel by 90°±15° relative to the maximum extension (B) of the inlet opening. The fiber guide channel has a substantially cylindrical zone Z, between the inlet and outlet openings, with the cross-section of the fiber guide channel constantly decreasing from the inlet opening to the zone Z.

Abstract: A feeding trough for a sliver opening device of an open-end spinning device, having a concave gripping area for conveying a sliver, lateral walls for guiding the sliver, and a concavely curved support surface for fixing a fiber tuft combed by an opening roller, wherein the feeding trough is pivotable around a shaft parallel to the axis of the opening roller. The feeding trough (8) is arranged in its working position with a gap width A of 0.7 to 1.5 mm between the support surface (13) and adjoining tips (20) of the opening roller set (3) at a combing-in point K, which is constantly reduced to a gap width B of ?0.5 mm over an angle area W in the direction of rotation of the opening roller (2) of at least 30°.

Abstract: The invention relates to an open end spinning device comprising a single-motor driven spinning rotor whose cup is rotationally actuated in the rotor housing which is negatively pressurized and closed by a cover element during a spinning process. According to said invention, the rotor house (2) is embodied in the form of a central element which is fixable to the frame of a textile machine and connects the control (3) of the spinning rotor (21) to the carrier (4) for the cover element (6) provided with a fibre band releasing device (23).

Abstract: An open-end spinning unit, which comprises a spinning rotor 1 that rotates during the spinning operation at a high rotational speed in a closed rotor housing 2. The spinning rotor is rotated by an individual electric motor drive 18 and supported in a smoothly running bearing assembly. When the drive is disconnected and the rotor housing is properly closed by a cover element 8, the spinning rotor is biased and rotated by an airflow resulting from a vacuum prevailing in the rotor housing and the motor drive operates as a generator. At least one of the electric quantities Pv, Gv which develop during the generator operation of the drive 18 is monitored, and upon exceeding a threshold value which can only be attained when the cover element is properly closed, a signal S is generated and processed in a control unit 30 to cause the cover element 8 on the rotor housing 2 to be locked, and thereafter the drive 18 is connected to its electrical supply to rotate the rotor at high speed.

Abstract: An opening roller assembly for an open-end spinning device of a textile machine, wherein an opening roller (12) is mounted on a bearing shaft (17) which is fixed in a bearing bracket (14) of an opening roller housing (11) in such a manner that the shaft can be easily removed. A drive (28) for rotating the opening roller is provided by a single electrical motor formed as an external rotor. A contact lead device (18) is mounted on the bearing shaft and includes leads (19) which are connected to the electrical motor, and a contact shoe housing (50) is provided which includes contact shoes or contact pins (21) which are connected to a power supply (27) of a corresponding textile machine and which can be selectively brought into contact with the leads (19) of the contact lead device (18).

Abstract: A channel plate adapter 24 is provided for an open-end spinning arrangement 1 having a spinning rotor 3 which turns at a high number of revolutions inside a rotor housing 2 chargable with an underpressure. The channel plate adapter 24 is made of a plastic material, defines the orifice area of a fiber guide conduit and a center through-bore 26 for a yarn withdrawal nozzle 27, and is adapted to be exchangeably arranged in a receiver 22 of a fiber channel plate 10 for closing the rotor housing during a spinning operation. The channel plate adapter (24) has a unitary one-piece clip-on closure (37) at inlet area of the through-bore (26) for centering and fixing the yarn withdrawal nozzle (27) in place.

Abstract: A method and an apparatus for operating an open-end spinning unit, which comprises a spinning rotor 1 that rotates during the spinning operation at a high rotational speed in a closed rotor housing 2. The spinning rotor is rotated by an individual electric motor drive 18 and supported in a smoothly running bearing assembly. When the drive is disconnected and the rotor housing is properly closed by a cover element 8, the spinning rotor is biased and rotated by an airflow resulting from a vacuum prevailing in the rotor housing and the motor drive operates as a generator. At least one of the electric quantities Pv, Gv which develop during the generator operation of the drive 18 is monitored, and upon exceeding a threshold value which can only be attained when the cover element is properly closed, a signal S is generated and processed in a control unit 30 to cause the cover element 8 on the rotor housing 2 to be locked, and thereafter the drive 18 of the spinning rotor 3 is released for a restart.

Abstract: A generally cylindrical opening roller unit of an open-end spinning device includes a unitary ring body having card clothing formed of at least one helical groove formed in the ring body, at least one helical ridge between courses of the groove, and saw teeth defined by transverse cuts on the ridge. The roller unit also includes an integrated annular collar that is at least codiametric with the teeth in order to protect the teeth. An integral transition area between the card clothing and the annular collars eliminates the problem of a tooth gap.

Abstract: A spinning device comprising a spinning box housing; a spinning rotor having a spinning cup on a rotor shaft; a cover element; a traveling belt acting tangentially on the rotor shaft; a rotor brake; a pivotable expander roller moveable within a maximum pivot angle via a pressure lever system connected to the brake gear of the rotor brake between an operative position when the spinning box is closed in an inoperative position wherein the expander roller is automatically lifted off the tangential belt and the rotor brake is applied to the rotor shaft when the spinning box is opened; a brake and locking lever having a locking recess in contact with an arresting roller arranged on the cover element; and an arrangement in the pressure lever system for absorbing shock-like forces acting on the expander roller and for preventing the forces from being transmitted to the brake and locking lever.

Abstract: A channel plate adapter 24 is provided for an open-end spinning arrangement 1 having a spinning rotor 3 which turns at a high number of revolutions inside a rotor housing 2 chargable with an underpressure. The channel plate adapter 24 is made of a plastic material, defines the orifice area of a fiber guide conduit and a center through-bore 26 for a yarn withdrawal nozzle 27, and is adapted to be exchangeably arranged in a receiver 22 of a fiber channel plate 10 for closing the rotor housing during a spinning operation. The channel plate adapter (24) has a unitary one-piece clip-on closure (37) at inlet area of the through-bore (26) for centering and fixing the yarn withdrawal nozzle (27) in place.

Abstract: An opening cylinder (1) for an open-end spinning device with a detachably fixed opening ring (2) which can be fixed by a torque-free rapid tension device (7) in a readily replaceable manner on a rotatably supported structural component of an opening cylinder (1) driven by an opening cylinder drive (4).

Abstract: A spinning device comprising a spinning box housing; a spinning rotor having a spinning cup on a rotor shaft; a cover element; a traveling belt acting tangentially on the rotor shaft; a rotor brake; a pivotable expander roller moveable within a maximum pivot angle via a pressure lever system connected to the brake gear of the rotor brake between an operative position when the spinning box is closed in an inoperative position wherein the expander roller is automatically lifted off the tangential belt and the rotor brake is applied to the rotor shaft when the spinning box is opened; a brake and locking lever having a locking recess in contact with an arresting roller arranged on the cover element; and an arrangement in the pressure lever system for absorbing shock-like forces acting on the expander roller and for preventing the forces from being transmitted to the brake and locking lever.

Abstract: An open-end spinning arrangement (1) comprises a stationary spinning box housing (2) arranged on a base frame of a textile machine for seating a high speed spinning rotor (7) in a vacuum-charged rotor housing (8), a sliver opening unit (4) connected to the spinning box housing (2) via a linear guide (3), and a cover element (23) for closing the rotor housing (8). The sliver opening unit (4) is releasably connected to a connecting bracket (30) of the linear guide (3), and an opening roller (12) driven by an individual motor and a sliver draw-in cylinder (14) driven by a step motor (15) are arranged inside the sliver opening unit (4).

Abstract: A generally cylindrical opening roller unit of an open-end spinning device includes a unitary ring body having card clothing formed of at least one helical groove formed in the rind body, at least one helical ridge between courses of the groove, and saw teeth defined by transverse cuts on the ridge. The roller unit also includes an integrated annular collar that is at least codiametric with the teeth in order to protect the teeth. An integral transition area between the card clothing and the annular collars eliminates the problem of a tooth gap.

Abstract: A brake (8) for a high speed open-end spinning rotor rotatably supported by its rotor shaft (2) in the bearing nip (3) of a support disk bearing (4). The rotor brake comprises tong arms that can be placed on the rotor shaft (2), each arm carrying a replaceable brake lining (16) on its end. The brake lining (16) is securely but removably fastened to the tong arm (9, 10) via a clamping plate (17) having a profiling (24) and loaded by a screw bolt (14).