Schubert & Salzer

Schubert & Salzer Maschinenfabrik Aktiengesellschaft

Rieter Ingolstadt Spinnereimaschinenbau Ag

Schubert & Salzer Maschinenfabrik Akitengesellschaft

Eberhard Grimm

Gerd Husges

Eugen Hini

Edmund Schuller

Erich Bock

Hans Landwehrkamp

Rudolf Oexler

Peter Artzt

Gerhard Egbers

Heinz Muller

Rupert Karl

Erwin Braun

Kurt Beitzinger

Kurt Inderst

Franz Schreyer

The present invention relates to a bearing for an open-end spinning rotor. The latter is driven at its rotor shaft by means of a tangential belt in a predetermined direction and is supported in a nip which is formed by at least two bearing disks capable of being driven by the rotor shaft. A bearing disk (at least one) leads in relation to the drive direction of the tangential belt rotating into the nip, and another bearing disk (at least one) trails in relation to the drive direction of the tangential belt rotating out of the nip. The axis of the bearing disk (at least one) rotating into the nip is at a specified distance from the plane which goes through the rotor shafts of the spinning rotors of several adjoining open-end spinning devices. This distance is being smaller than the distance between the axis of the bearing disk (at least one) rotating out of the nip and the rotor shaft plane. A plane going through the axes of the bearing disks forms an acute angle between 5&deg; and 15&deg; with the plane going through the axes of the spinning rotors.

Bearing for a spinning rotor

A bearing setup is provided for the supporting disks of an open-end spinning machine, the supporting disks being supportively fixed on the ends of a shaft extending through a bearing sleeve of a supporting disk bearing. The bearing setup includes a fastening system configured with the bearing sleeve so that the supporting disk bearing can be readily and easily removed from the pillow block of the spinning machine without disassembly of the pillow block from the machine frame. The fastening system may include a threaded bore defined in the axial sleeve for engagement with a threaded screw member extending through the pillow block.

Bearing setup for an open-end spinning rotor

Step bearing for the shaft of a spinning rotor

The instant invention relates to an open-end spinning device in which the spinning rotor is mounted on the drive shaft. The bearing and braking means are designed so that the spinning rotor can also be operated and braked securely at high rotational speeds. This is achieved by installing the braking means between the open end of the spinning rotor and the rotor shaft bearing system.

Open-end spinning device

In an open-end spinning device with a spinning rotor a compressed air conduit is provided for directing an air current upon the inner surface of the spinning rotor. This compressed air conduit is connected through a stop valve to a source of compressed air. The compressed air conduit is provided with a pressure control device which can be pre-set to at least two pressure levels. The pressure control device has parallel conduits of which one conduit is provided with a pressure reduction device for the low pressure. During the preparation of the piecing operation, compressed air, at high pressure, is fed into the spinning rotor to clean said spinning rotor. Subsequently, but before the start of fiber feeding into the spinning rotor, the compressed air is reduced to a lower pressure value and is finally switched off before the yarn is fed back into the spinning rotor. The invention includes the process for restarting the open-end spinning device. Both the process and the device may be manually or automatically operated.

Open-end spinning machine and process for the start-up of such a device

The invention relates to an open-end rotor-spinning device with a rotor shaft which is mounted and driven in the wedge-shaped gap between supporting disks and to the free end of which is assigned an axial bearing. A simplified mounting, which also allows the supporting disks to be removed and exchanged while the machine is in operation, is provided because the rotor shaft (1) is mounted at two bearing points, of which one is formed by supporting disks (2, 3) arranged in the vicinity of the spinning rotor (10) and the second is a bearing (5) which absorbs axial and radial forces and which receives the free end (11) of the rotor shaft (1). An increase in the operating speed of the spinning rotor (10) without an increase in the running speed of the drive means (6) is achieved as a result of a reduction of the diameter of the rotor shaft (1) in the region of the drive means.

Open-end rotor-spinning device

In an open-end rotor spinning machine having a plurality of spinning stations located next to one another, each spinning station has a spinning rotor (40) which is arranged in a housing (1) and has a drive spindle (42) extending transversely to the machine longitudinal direction. This drive spindle (42) is mounted in the gusset portion of a supporting disk bearing (44). The supporting disk bearing (44) is supported by the housing (1) which accommodates the spinning rotor (40) and which is mounted on a swivelling axis (10). The spinning rotor (40) is driven by a drive belt (43) extending in the machine longitudinal direction. The housing (1) can be swivelled away from this drive belt (43) to such an extent that the housing (1) can be removed from its receptacle on the machine side.

Open-end spinning machine

Process and device for starting spinning on an open-end spinning

An apparatus and method for stopping operation of an open-end spinning machine is disclosed whereby the rotor shaft 1 of the spinning rotor and the shafts 30, 40 of the support rollers 3, 4 are rapidly but gently stopped by applying a braking force to the shafts of the support rollers after the rotor shaft is braked. Preferably a single force is shared and applied in timed sequence for braking the rotor shaft and the support roller shafts. The apparatus for carrying out the method includes a pivotable lever 7 which is pivotable about an axis 70 and carries a support 73 having a brake lining which receives the rotor shaft 1. A belt lifting roller 72 is carried on the pivotable lever which lifts a tangential belt 5 off of the rotor shaft 1 to thus stop the drive of the spinning rotor. The support 73 is elastically carried on the lever 7 by means of a U-shaped spring 74. A pair of brake jaws 80, 81 are carried on a common mounting piece 8 about a fulcrum 80 which can be pressed against the shafts 30, 40 of the support rollers 3, 4 after the shaft 1 has been pressed onto a stop 6 by means of engagement with the support and brake 73. Good guiding of the support 73 and uniform seating of its brake lining on the shaft 1 is achieved by the U-shaped configuration of spring 74. The common mounting 8 of the brake jaws moves in a pendulum fashion on the lever 7 whereby the brake jaws are self-centering and exert a uniform pressure on the shafts of the support rollers.

Process and apparatus for stopping an open-end spinning apparatus

Apparatus for sealing a rotor housing of an open-end spinning machine is disclosed wherein the housing is under a reduced-pressure and includes a bore through which a rotor shaft of the spinning rotor extends. The apparatus includes a mounting carried by the rotor housing for floatingly mounting a sealing washer relative to the bore of the housing and a counter-surface carried adjacent the reduced-pressure side of the housing against which the sealing washer is abutted and maintained by the reduced pressure in the housing.

Apparatus for sealing a rotor housing of an open-end spinning machine

A method and apparatus for the elimination of an irregularity in a yarn being produced on an open end spinning machine and drawn off therefrom by a pair of draw-off rollers and wound on a bobbin. The yarn is deflected into an N-shaped run so that a knotting mechanism can knot the parallel portion of the yarn together so as to remove the irregularity in the yarn. Yarn guides are provided on the knotting mechanism for displacing an oblique portion of the yarn out of the knotting mechanism when in use.

Method and mechanism for elimination of an irregularity in a yarn

A winding apparatus including a winding roll driving a bobbin and a yarn reservoir arranged between a yarn supply point and the winding roll. The state of filling of the reservoir is monitored by a monitoring device which generates a signal for controlling the speed of the winding roll. Interposed between a driven drive shaft and the winding roll are a pair of intermediate wheels which are selectively brought into engagement with the drive shaft and the winding roll responsive to predetermined states of filling of yarn on the reservoir that is sensed by the monitoring device so as to either drive the winding roll at speed higher or lower than the delivery speed at the yarn delivery point. A brake lever is operably connected to a mechanism which supports the intermediate wheels and is brought into contact with the winding roll when both the intermediate wheels are out of engagement with the shaft and winding roll for stopping the winding roll.

Winding apparatus

An open-end spinning apparatus having a fiber conveying path between a fibrous material feed device and a spinning compartment. A trash separating device which includes an aperture and a dividing edge is provided for removing trash from the fibrous material as it is conveyed along the conveying path extending around an opening roller. A collection chamber is provided for receiving the trash from the trash separating device. Interposed between the trash separating device and collection chamber is an auxiliary chamber. A first aperture extends through a wall of the auxiliary chamber through which a stream of air flows for being introduced into the fiber conveying path. A second aperture is provided in an opposed wall of the auxiliary chamber through which a smaller stream of air is removed from the auxiliary chamber along with small particles of fly and trash. A controllable closing member is disposed between the auxiliary chamber and the trash collection chamber which is closed when air is used for removing the trash collected in the trash collecting chamber.

Open-end spinning apparatus

An open-end spinning device wherein yarn is produced in a spinning compartment and withdrawn therefrom by yarn-withdrawal rollers and a winding device. The yarn storage device is interposed between the yarn-withdrawal rollers and the winding device. A knock-off motion is positioned between the spinning compartment and the yarn withdrawal rollers for producing a signal responsive to changes in tension in the yarn. THe yarn storage device includes a roller storage which is driven in a forward direction for accumulating a supply of yarn that is to be fed to the winding device. The roller storage can also be rotated in a reverse direction for withdrawing yarn therefrom during a piecing operation. A yarn gripper is provided for gripping the yarn upon a change in tension in the yarn.

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Ingolstadt, Germany

Eberhard Grimm