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    Rotary twister element for frictional open-end spinning
    2.
    发明公开
    Rotary twister element for frictional open-end spinning 失效
    旋转纺丝元件的开放式摩擦纺纱。

    公开(公告)号：EP0234620A2

    公开(公告)日：1987-09-02

    申请号：EP87200135.9

    申请日：1987-01-29

    申请人： SAVIO S.p.A.

    发明人： Nerli, Giovanni ,  Grego, Francesco ,  Bottos, Roberto ,  Ferro, Francesco

    IPC分类号： D01H4/16

    CPC分类号： D01H4/06

    摘要： Rotary twister element suitable to keep under ten­sion the fibres during the twisting operation in a fric­tional open-end spinning process, constituted by a solid, hollow, reduced-thickness element (5) with perforated skirt (4), which is internally provided with a suction duct (7) defining a longitudinal slot (6), the edge of which, which constitutes the thread formation line, is suitably inclined relative­ly to the generatrix of the same solid, hollow element, as a function of the direction of rotation of the solid element, and of the direction of thread extraction. Also a screen (21) is provided for the air dragged by the rotation of the solid element, which may have a cylindrical shape, a cone frustum shape, or the shape of any other revolu­tion solid.

    Rotary twister element for frictional open-end spinning
    3.
    发明公开
    Rotary twister element for frictional open-end spinning 失效
    旋转TWISTER元件用于摩擦开放式旋转

    公开(公告)号：EP0234620A3

    公开(公告)日：1988-02-03

    申请号：EP87200135

    申请日：1987-01-29

    申请人： Officine Savio S.p.A.

    发明人： Nerli, Giovanni ,  Grego, Francesco ,  Bottos, Roberto ,  Ferro, Francesco

    IPC分类号： D01H01/135

    CPC分类号： D01H4/06

    摘要： Rotary twister element suitable to keep under ten­sion the fibres during the twisting operation in a fric­tional open-end spinning process, constituted by a solid, hollow, reduced-thickness element (5) with perforated skirt (4), which is internally provided with a suction duct (7) defining a longitudinal slot (6), the edge of which, which constitutes the thread formation line, is suitably inclined relative­ly to the generatrix of the same solid, hollow element, as a function of the direction of rotation of the solid element, and of the direction of thread extraction. Also a screen (21) is provided for the air dragged by the rotation of the solid element, which may have a cylindrical shape, a cone frustum shape, or the shape of any other revolu­tion solid.

    Friction open-end spinning process and device to practically embody it
    4.
    发明公开
    Friction open-end spinning process and device to practically embody it 失效
    摩擦开放式纺纱工艺和装置实际体现它

    公开(公告)号：EP0214686A2

    公开(公告)日：1987-03-18

    申请号：EP86201476.8

    申请日：1986-08-28

    申请人： SAVIO S.p.A.

    发明人： Nerli, Giovanni ,  Nesti, Solitario ,  Grego, Francesco ,  Bottos, Roberto ,  Ferro, Francesco

    IPC分类号： D01H4/04

    CPC分类号： D01H4/06

    摘要： Friction open-end spinning process, wherein the fibres of the feeding fibre sliver (3), once discretized, are sucked by a suction slot on a revolving twister element, provided with perforated surface (17), to feed the free of the yarn being formed, characterized in that the fibres are fed in direction parallel to the free end (29) of the yarn (23) be­ing formed, are kept under an adjustable tension throughout the twisting operation, and are subjected to a progressively increasing twist, from the open end of the end of the yarn being formed onwards.
    The device embodying the above process substantially uses as the twister element a revolving flat disc (13) provid­ed with perforations (17) arranged according to an annulus, which cooperates with a sucking slot (19), the edge of which, constituting the yarn formation line, is positioned ac­cording to a chord of said disc.

    摘要翻译： 摩擦开放式纺纱工艺，其中喂入纤维纱条（3）的纤维一旦离散后，被设置有穿孔表面（17）的旋转扭转元件上的抽吸槽吸入，以供纱线 其特征在于，纤维沿与形成的纱线（23）的自由端（29）平行的方向进给，在整个加捻过程中保持在可调节的张力下，并且受到来自 纱线末端的开口端向前形成。 体现上述过程的装置基本上用作一个旋转扁平盘（13），该旋转扁平盘设置有根据环形布置的穿孔（17），该穿孔与一个吸入槽（19）配合，该吸入槽的边缘构成纱线结构 线根据所述盘的弦来定位。