Method and apparatus for performing an open-end spinning operation
    1.
    发明授权
    Method and apparatus for performing an open-end spinning operation 失效
    用于执行开放式纺纱操作的方法和装置

    公开(公告)号:US3601969A

    公开(公告)日:1971-08-31

    申请号:US3601969D

    申请日:1969-01-27

    CPC classification number: D01H4/50

    Abstract: A method and apparatus for operating a yarn in an open end spinning system utilizing pneumatic suction force and a centrifugal force due to a high speed rotation of the spinning rotor at a time of stopping or restarting the spinning operation. Tension of the spinning yarn delivered from the rotor is detected. By positively insertion of the yarn into the rotor when a yarn tension below a predetermined value is detected, an upstream yarn end is maintained in the rotor without any contact with fibers accumulated upon the inside wall of the rotor during abnormal rotation of the rotor. The mentioned contact is revived when a normal rotation is recovered. Combination of a mechanical insertion mechanism with a pneumatic insertion mechanism assures further preferable result in the yarn piecing operation.

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