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    Method and a device for removing the faulty yarn portion from a work station of an open-ending spinning machine
    1.
    发明授权
    Method and a device for removing the faulty yarn portion from a work station of an open-ending spinning machine 有权

    公开(公告)号：US10415158B2

    公开(公告)日：2019-09-17

    申请号：US15089830

    申请日：2016-04-04

    申请人： Rieter CZ s.r.o.

    发明人： Jiri Stancl ,  Vladimir Skrivanek ,  Ladislav Hajek

    IPC分类号： D01H4/48 ,  D01H15/00

    摘要： A method and device are provided for removing a faulty yarn portion at a work station of an open-end spinning machine after the work station is stopped in a controlled manner, particularly after a defect of the spun yarn is detected by a quality sensor. Prior to a request to connect a suction nozzle of the work station for sucking off of the faulty yarn portion, the value of a vacuum in a central channel of the vacuum system of the open-end spinning machine is determined and evaluated. The suction nozzle is connected to the central vacuum channel only after the current capacity of the vacuum source detected is sufficient, or only after a sufficiently high vacuum is achieved.

    Method for detecting changes of position of shaftless spinning rotor of open-end spinning machine in cavity of active magnetic bearing and spinning unit of open-end spinning machine with active magnetic bearing for bearing shaftless spinning rotor
    2.
    发明授权
    Method for detecting changes of position of shaftless spinning rotor of open-end spinning machine in cavity of active magnetic bearing and spinning unit of open-end spinning machine with active magnetic bearing for bearing shaftless spinning rotor 有权

    公开(公告)号：US09689658B2

    公开(公告)日：2017-06-27

    申请号：US14200305

    申请日：2014-03-07

    申请人： Milan Moravec ,  Miroslav Stusak ,  Jiri Sloupensky

    发明人： Milan Moravec ,  Miroslav Stusak ,  Jiri Sloupensky

    IPC分类号： G01B7/14 ,  D01H4/12 ,  F16C32/04 ,  D01H4/44

    CPC分类号： G01B7/14 ,  D01H4/12 ,  D01H4/44 ,  F16C32/0446 ,  F16C32/0451 ,  F16C2340/18

    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).

    Magnetic bearing, shaft and shaft monitoring for a spinning rotor of an open-end spinning machine
    5.
    发明授权
    Magnetic bearing, shaft and shaft monitoring for a spinning rotor of an open-end spinning machine 有权

    公开(公告)号：US09964147B2

    公开(公告)日：2018-05-08

    申请号：US14675148

    申请日：2015-03-31

    申请人： Rieter CZ s.r.o.

    发明人： Milan Moravec ,  Jiri Sloupensky ,  Siegfried Silber ,  Andreas Josef Pröll ,  Peter Dirnberger

    IPC分类号： F16C32/04

    CPC分类号： F16C32/048 ,  D01H4/12 ,  F16C32/0465 ,  F16C32/047 ,  F16C32/0487 ,  F16C2340/18

    摘要： A magnetic bearing for the mounting of a shaft, in particular for a spinning rotor of an open-end spinning device, features several pole shanks of a stator for the active radial magnetic mounting of the shaft in two degrees of freedom, which in each case are surrounded by a coil and are radially arranged to each other, in such a manner that they define an opening for the shaft. In the area of the opening, the pole shanks are connected to each other. For the passive axial mounting of the shaft, at least one permanent magnet is arranged between the coils and the opening. The invention also includes a shaft for mounting with at least one corresponding magnetic bearing. The shaft is a composite component, which at least partially consists of non-ferromagnetic material. In the area of the radial and axial mounting, a component made of a ferromagnetic material is arranged. A shaft mounting is also provided and features, for the passive axial mounting of one degree of freedom of the shaft and for the active radial mounting of two degrees of freedom of the shaft, at least one, preferably two, corresponding magnetic bearings.

    Drum inter-storage of yarn at an operating unit of a textile machine and method of control for
    7.
    发明授权
    Drum inter-storage of yarn at an operating unit of a textile machine and method of control for 有权
    在纺织机械的操作单元处的纱线的存储辊和控制方法

    公开(公告)号：US09403656B2

    公开(公告)日：2016-08-02

    申请号：US13940402

    申请日：2013-07-12

    申请人： Rieter CZ s.r.o.

    发明人： Jiri Sloupensky ,  Vladimir Kluson ,  Evzen Pilar

    IPC分类号： B65H59/18 ,  B65H51/22 ,  D01H13/10

    CPC分类号： D01H13/10 ,  B65H51/22 ,  B65H59/18 ,  B65H2701/31 ,  D01H13/104 ,  D01H13/108

    摘要： A drum inter-storage of yarn for a textile machine includes a driven rotary drum (10) with a compensatory rotary arm (103). The rotary drum (10) is coupled with a first drive formed by an electric motor, and a compensatory rotary arm (103) is coupled with a second drive formed by an electric motor, whereby both motors are connected to a control device. The invention also relates to a method of controlling the drum inter-storage (1) of yarn at an operating unit of a textile machine.

    摘要翻译： 用于纺织机的纱线的卷筒存储器包括具有补偿旋转臂（103）的从动旋转滚筒（10）。 旋转鼓（10）与由电动机形成的第一驱动器联接，并且补偿旋转臂（103）与由电动机形成的第二驱动器联接，由此两个电动机连接到控制装置。 本发明还涉及一种在纺织机械的操作单元处控制纱线的卷筒存储（1）的方法。

    METHOD OF CONTACTLESS OPTICAL DETECTION OF YARN AT A WORKSTATION OF A YARN MANUFACTURING TEXTILE MACHINE, AN OPTICAL SENSOR OF YARN AND A TEXTILE MACHINE
    8.
    发明申请
    METHOD OF CONTACTLESS OPTICAL DETECTION OF YARN AT A WORKSTATION OF A YARN MANUFACTURING TEXTILE MACHINE, AN OPTICAL SENSOR OF YARN AND A TEXTILE MACHINE 有权

    公开(公告)号：US20220162778A1

    公开(公告)日：2022-05-26

    申请号：US17599102

    申请日：2020-03-27

    申请人： Rieter CZ s.r.o.

    发明人： Pavel Kousalik ,  Zdenek Beran

    IPC分类号： D01H13/16 ,  D01H13/20 ,  D01H13/22 ,  D01H13/18 ,  B65H63/032

    摘要： A method is provided for contactless optical detection of yarn at a workstation of a textile machine in which the yarn moves in a sensing slot between a source of radiation and an optical sensor having at least one row of radiation sensitive elements, whereby shading of the individual radiation sensitive elements by yarn moving through the sensing slot is monitored and a state of the yarn is evaluated on a basis of the monitoring. The method monitors and evaluates a position of the yarn in the sensing slot or a time course of the position of the yarn in the sensing slot. A change is detected in the position or in the time course of the position of the yarn in the sensing slot corresponding to a yarn break before an end of the yarn break passes through the sensing slot. When the yarn break is sensed, a stop signal is generated for the workstation.