Abstract: A cleaning head (1) of a cleaning device (2) for cleaning a spinning rotor (3) featuring a fiber slide wall (4), a fiber collection groove (5) and an open edge (6) can, by means of a feed device of the cleaning device (2), be fed into a predetermined cleaning position (I) in the interior of the spinning rotor (3). The cleaning head (1) features at least one cleaning element formed as a scraper element (7), which is arranged on the cleaning head (1) in such a manner that, in the predetermined cleaning position (I) of the cleaning head (1), it is fed to the open edge (6) of the spinning rotor (3). A cleaning device (2) features a corresponding cleaning head (1) for cleaning a spinning rotor (3). With a method for cleaning a spinning rotor (3) by means of a cleaning device (2), which features such a cleaning head (1), after the feed of the cleaning head (1) into the cleaning position, the open edge (6) of the spinning rotor (3) is cleaned by means of a scraper element (7).

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: 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: 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: A spinning rotor of an open-end spinning device is slowed down for piecing to a low rotational piecing speed and is then accelerated to the operating speed. For this purpose, the spinning rotor or an element in driving connection with it is presented a drive transmission device from a service unit by means of which the spinning rotor can be switched from normal production speed to a reduced piecing speed and back. In this process, the drive transmission device can be driven either by a driving apparatus installed on the service unit or by a drive belt extending within spinning machine. The driving apparatus mounted on the service unit is connected to a control device for the control of the evolution of the rotational speed of the spinning rotor. The spinning rotor is driven according to a rotational speed course controlled by means of a program applied by the control device during the time when its rotational speed deviates from its operating speed.

Abstract: The invention concerns exchangeable machine components (20, 30, 40, 50) of a spinning machine in a spinning works, upon each, in accord with the invention, a corresponding identification recognition symbol (21, 31, 41, 51) is placed, in such a manner that said symbol is in a location of simple accessibility for reading. By means of sensors (22, 32, 42, 52) the identification recognition symbol (21, 31, 41, 51) is automatically detectable, and stored so that the configuration of a spinning station can be immediately called up. The configuration data are thus available for a monitoring and service system, such as, for instance, a remote diagnostic system.

Abstract: Between first, the roll body (10) and the fittings carrier (11) and second, the drive shaft (2) is provided a releasable, particularly a clip or latch type connection apparatus (3). This connection apparatus (3) possesses on one of these two disintegrator roll components (10, 11) a studlike element (30) and on the other of these two disintegrator components (11, 10) a stud acceptor (31) oriented parallel to the disintegrator roll axis. The said stud acceptor possesses a narrowed passage on its end which is proximal to the fittings carrier (11). By means of this narrowed passage, the stud acceptor (31) and/or the studlike element (30) acts elastically in the transverse direction.

Abstract: The invention concerns an open-end spinning apparatus with a spin-rotor (1), the shaft (3) of which is supported by an aerostatic, radial bearing (5) with an air gap (9) between the bearing assembly and the shaft (3) and the invention further concerns the aerostatic bearing for this purpose. In accord with the invention, the open-end spinning apparatus is thereby improved, in that the construction material for the bearing surface of the spin-rotor (1) and/or the bearing surface of the radial bearing (5) is polyimide or Aramid. In spite of possibly occurring bearing surface contacts, the operating life of the radial bearing is substantially increased by the use of these materials.

Abstract: The invention relates to an opening cylinder (2) of an open-end spinning device as well as a fiber sliver opening apparatus with such an opening cylinder. In at least one lateral area (6) of the opening cylinder (2) a sealing surface for an air gap seal (12) is formed. According to the invention the opening cylinder (2) has an air passage (14) in at least the one lateral area (6), the output side of the air passage lying within the sealing surface or adjoining the sealing surface directly and the input side of which being at a shorter distance from the rotational axis of the opening cylinder (3) than the output side. During the operation of the fiber sliver opening apparatus, air is conveyed through the passages (14) to the air gap (12) of the air gap seal arrangement or conveyed past it, so that the entry of air and pollutants into the air gap (12) is counteracted.

Abstract: A spinning rotor 30 of an open-end spinning device 3 is slowed down for piecing to a low rotational piecing speed and is then accelerated to the operating speed. For this purpose the spinning rotor 30 or an element in drive connection with it is presented from a service unit 2 a drive transmission device 7 by means of which the spinning rotor 30 can be switched from normal production speed to a reduced piecing speed and back. In this process the drive transmission device 7 can be driven either by a driving apparatus 20 installed on the service unit 2 or by a drive belt 12 extending alongside the rotor spinning machine 1. The driving apparatus 20 mounted on the service unit 2 is connected for control to a control device 5 for the control of the evolution of the rotational speed of the spinning rotor 30 which is driven according to a rotational speed course controlled by means of a program applied by the control device 5 during the time when its rotational speed deviates from its operating speed.

Abstract: The invention concerns a thread guide tube with a passage for the guidance of a thread exiting the thread forming zone of a spinning machine. The tube possessing a first section which is proximal to the thread forming zone, and a second section which is remote from the thread forming zone. The thread guide tube has a separation so that the thread guide tube is separable and is comprised of at least two parts.

Abstract: A winding process for winding yarn into a cross-wound bobbin in the textile machine includes depositing the yarn on a bobbin in a transversing stroke by a transversing movement of a yarn guide. The process includes intermittently decreasing the traversing stroke from a maximum value to a minimum value and then increasing the value of the traversing stroke from the minimum value back to a relatively constant maximum value and holding the stroke at the maximum value for a predetermined period of time. The traversing frequency of the yarn guide is decreased to a relatively constant minimum value substantially simultaneously with the increasing of the traversing stroke from the minimum value back to the relatively constant maximum value. The traversing frequency is maintained at the constant minimum value for a predetermined period of time. The traversing frequency of the yarn guide is then increased from the constant minimum value after the predetermined period of time.

Abstract: A paraffin coating device of a textile machine which has a fixed paraffin body to coat a yarn running with paraffin is provided with a compact unit supporting the essential parts of the paraffin treatment apparatus and which can be easily removed from the paraffin treatment apparatus for maintenance purposes in order to facilitate handling and to improve even application of paraffin on the yarn.

Abstract: The invention relates to a yarn guidance rod and to a device for the laying of a yarn on a cross-wound bobbin in a textile machine. A plurality of winding stations installed next to each other is serviced by a yarn guidance rod made of a carbon fiber reinforced plastic which can be moved back and forth. The yarn guidance rod is provided with a sheathing. The yarn guidance rod has segments made of a highly heat-expandable material in order to achieve heat compensation as compared with the textile machine.

Abstract: A yarn draw-off device for use with a spinning machine includes a pressure roller and a rotatably driven draw-off shaft. The pressure roller is in contact with the draw-off shaft and is rotatably driven by the shaft. An adjustable mounting device is provided for the pressure roller. The pressure roller is rotatably mounted on the mounting device. The mounting device is selectively movable relative to the draw-off shaft so as to vary the contact pressure between the pressure roller and the draw-off shaft.

Abstract: The invention relates to a yarn guidance rod 1 and to a device for the laying of a yarn on a cross-wound bobbin in a textile machine 8.A plurality of winding stations installed next to each other is serviced by a yarn guidance rod made of a carbon fiber reinforced plastic which can be moved back and forth. The yarn guidance rod 1 is provided with a sheathing 3. The yarn guidance rod 1 has segments made of a highly heat-expandable material in order to achieve heat compensation.

Abstract: A winding device, in particular for conical bobbins, including; a rotatable friction roller which rotates a bobbin through friction. The friction roller consists of several rotatable elements installed next to each other which are mounted on a shaft. One of the elements is connected non-rotatably with the shaft, the other elements of the friction roller are freely rotatable on the shaft and are connected to each other by a differential gear transmission. The differential gear transmission is in the form of a friction wheel transmission. The axes of the friction wheel transmission are at a perpendicular to the shaft.

Abstract: A process and apparatus for the control of a yarn storage mechanism on a spinning mill machine is proposed. When yarns are wound up it may occur, e.g. in forming conical bobbins, that more yarn is delivered than is wound up. The yarn which is briefly in excess is here taken up in form of a yarn loop by a compensator arm which intervenes transversely in the course of the yarn and is mounted so as to be capable of swivelling. According to the invention it is proposed that the compensator arm be subjected to the force of a spring which acts upon it increasingly as the yarn loop decreases, and in that the force of an additional elastic element acts upon the compensator arm as further excursion occurs.

Abstract: A belt drive variable gear transmission system is provided. The system includes a drive disk which has a peripheral running surface for engagement with a drive belt. The peripheral running surface of the drive disk may include a toothed profile. A drive belt is included having a V-shaped profile with angled flanks in a relatively flat inner peripheral surface for engagement with the peripheral running surface of the drive disk. A tension roller is provided in running contact with the drive belt and is movable so as to vary tension on the drive belt thereby varying the transmission ratio of the system. The system further includes a spring washer disengagement disk. The disengagement disk includes two halves which are movably spaced from each other by means of a spring device. The disk halves include angled surfaces in running contact with the angled flanks of the drive belt.

Abstract: An open-end spinning device with a fiber feeding channel which extends from a housing with a rotating opening roller to a spinning element. The fiber feeding channel comprises two channel sections which can be moved towards each other and can be brought into alignment with each other. The first channel section is located in an insert of the housing and is capable of axial movement in the housing. The insert is urged by an elastic element in the direction of the second channel section and is covered by a screen on its end towards the interior of the housing, at least on the downstream side (with reference to the rotational direction of the opening roller). A seal is located between the insert and the housing.