摘要:
A spinning unit and method for detecting changes of position of a shaftless spinning rotor (1) of an open-end spinning machine in a cavity of an active magnetic bearing, in which the position of the spinning rotor (1) is detected by a system of sensors (A, B) and on basis of the detected changes in the position of the spinning rotor (1) is adjusted controlling of the active magnetic bearing in order to eliminate undesirable changes in the position of the spinning rotor (1) in the cavity of the active magnetic bearing. Continuously is detected radial shifting of the spinning rotor (1) and simultaneously is continuously detected inclination of the spinning rotor (1), whereupon according to the detected changes in the position of the spinning rotor (1) is determined shifting and/or inclination of the spinning rotor (1) which is used for subsequent adjustment of the controlling of position of the spinning rotor (1) in the active magnetic bearing, wherein both radial shifting and inclination of the spinning rotor are each detected by at least two pairs of sensors of the distance of monitored surface of the spinning rotor, the pairs of sensors for detecting radial shifting of the spinning rotor detect changes of distances of the cylindrical wall of the spinning rotor from the sensors. The sensors (A, B) of the position of the spinning rotor (1) are grouped into pairs, whereby two pairs of sensors (A1, A2) for detecting of radial shifting of the spinning rotor (1) are arranged on the opposite sides of the spinning rotor (1) against the cylindrical wall (10) of the spinning rotor (1) and at the same time another two pairs of sensors (B1, B2) for detecting of inclination of the spinning rotor (1) are arranged on the opposite sides of the spinning rotor (1) against the wall (11) of the spinning rotor (1), which is perpendicular to the rotation axis (OA) of the spinning rotor (1).
摘要:
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.
摘要翻译:一种用于操作开口纺纱单元的方法和装置,其包括在闭合转子壳体2中以高转速旋转的旋转转子1。 旋转转子由单独的电动机驱动器18旋转并支撑在平稳运行的轴承组件中。 当驱动器断开并且转子壳体被盖元件8适当地关闭时,旋转转子被由转子壳体中存在的真空引起的气流偏压和旋转,并且电动机驱动器作为发电机运行。 监视在驱动器18的发电机运行期间产生的电量P V V,V V V中的至少一个,并且超过仅能达到的阈值时 当盖元件正确关闭时,在控制单元30中产生并处理信号S,以使转子壳体2上的盖元件8被锁定,此后,旋转转子3的驱动器18被释放以重新启动 。
摘要:
An open-end spinning device 1 with a bearing arrangement for supporting a spinning rotor 3, which is seated so it can rotate at high turning frequency and is electrically insulated in relation to the housing of the spinning device and of the bearing. The static charge being created on the spinning rotor 3 during the spinning process is diverted to a grounded component of the spinning device 1 by means of an electrical conducting mechanism. The electrical conducting mechanism 40 is arranged in the area of the axial bearing 18.
摘要:
An OE spinning apparatus 1 with a spinning rotor 2 having a hollow shaft 26 supported radially in a wedge-like gap 25 of a support-disk bearing 4 and driven by an individual motor 9 comprising an armature 11 integrated into hollow shaft 26 at its end and a stator 10 fixed to spinning-box housing 12. Pressure roller 8 rotates about axis 24 angled acutely to rotor shaft 3 to urge rotor shaft 3 into the gap 25 and also in the direction of axial bearing 13, which may be a permanent magnet bearing or pneumatic bearing. Spinning apparatus 1 thereby has a high natural frequency, which makes possible very high rotor speeds.
摘要:
A supporting ring for a supporting ring bearing of the rotor of an open end rotor spinning machine for the optical control of a joining carriage and having at least one reflecting region on an otherwise substantially non-reflecting axial ring surface (2) of the supporting ring (1) facing a light source, wherein one or more cupped receptacles (6) are provided for in the ring surface (2) into which reflectors (3) can be inserted and secured, and wherein an interruption of a rotational motion of the supporting ring (1) about a rotational axis (4a) is optically recognized by the joining carriage to start a joining carriage execution procedure, is characterized in that the depth of a receptacle (6) is larger than the thickness of a reflector (3) which can be placed therein. In this fashion the disadvantages of conventional supporting rings having reflectors can be avoided and optimal reflection can easily be restored at any time after wear of individual reflectors.
摘要:
In the case of a shaft for an open-end spinning rotor, a supporting element arranged at a step bearing extends the shaft. The supporting element is arranged centrical to the axis of the shaft. The supporting element is affixed to the shaft by means of a separate holding part, which engages with the circumferential surface of the shaft to enable in a simple way, an exact axial and radial positioning of the supporting element on the shaft.
摘要:
A rotor disk for a spinning machine has a hub ring that includes a first carrier and a second carrier, with the hub ring being joined radially externally in a rotationally fixed manner to a thrust ring made of polymer material. The hub ring and the thrust ring are fastened together in a manner allowing them to be detached non-destructively. The first and the second carriers are constructed and are arranged in a mirror image.
摘要:
Bearing arrangement for an open-end spinning machine has a bearing block attached to bearing supports defined on the machine frame. A seat is defined in the bearing block for receipt of an axial bearing. An intermediate support structure member is removably attached to the bearing block and supporting ring bearings. The intermediate support structure is removable from the bearing block with the supporting ring bearings while the bearing block remains attached to the machine frame through bearing supports.
摘要:
A disk for use in a bearing assembly of an open end spinning machine having four disks arranged in two pairs and which operate at up to 15,000 RPM's while the rotor shaft turns at up to 125,000 RPM's. The disk pairs are arranged to form a wedge shaped gap supporting the shaft of a spinning rotor for rotation. Each disk comprises a metallic hub which mounts a synthetic ring. The synthetic ring has a spinning rotor contact surface comprising a shoulder arranged atop a helically disposed rib which extends around and across the contact surface. The shoulder imparts an axial thrust against the spinning rotor during operation of the spinning machine.
摘要:
An open-end spinning machine having a spinning rotor attached to a shaft is provided wherein the shaft of the spinning rotor is driven by driving means. The shaft of the spinning rotor is held in the nips of pairs of rearward and forward supporting disks. During spinning operations, an axial force is generated in the axial direction of the free end of the rotor shaft. The open-end spinning device further comprises a radial support surrounding at least a portion of the circumference of the rotor shaft and disposed at least in part in the area between the free end of the shaft and the area of the shaft acted upon by the rearward pair of disks.