System for cutting roving in a spinning machine
    1.
    发明授权
    System for cutting roving in a spinning machine 失效
    旋转机切割系统

    公开(公告)号:US5117621A

    公开(公告)日:1992-06-02

    申请号:US584749

    申请日:1990-09-18

    CPC分类号: D01H7/32 D01H7/50 D01H9/16

    摘要: A spinning apparatus winds a strand onto a yarn package by relatively rotating a flyer and the yarn package about an upright axis so as to wind the strand in a succession of turns around the package by a flyer finger movable axially relative to the package. Each successive layer of turns is shorter than the preceding one so that the finished package has an axially upwardly tapered upper end. After substantially completely forming the package the rotation is generally stopped to leave the flyer in a position with the finger below the upper end of the last layer of turns formed on the package. Then the package and finger are relatively axially moved until the finger is generally at the upper end of the first layer of turns formed on the package. The flyer and package are then relatively rotated forward, that is in the same direction as when the package was being formed, through at least one half revolution about the axis so as to form a loop of the strand around the upper package end. Slack is then created in the strand upstream of the package and the finger is moved downward below the level of the upper end of the outer layer. Finally the strand is cut below the level of the upper end of the outer layer.

    摘要翻译: 纺纱设备通过相对旋转飞轮和围绕垂直轴线的纱线包装将纱线卷绕到纱线卷装上,以便通过可相对于包装件轴向移动的飞翼指卷将卷绕在包装周围的一连串匝中缠绕。 每个连续的匝数比前一个更短,使得成品包装具有轴向向上倾斜的上端。 在基本上完全形成包装之后,通常停止旋转以使飞翼离开手指在形成在包装上的最后一匝的上端下方的位置。 然后包装和手指相对轴向移动,直到手指通常位于形成在包装上的第一层匝的上端。 然后将传单和包装相对于相对于当包装形成的方向相同的方向旋转,通过围绕轴的至少一个半圈,以便围绕上包装端部形成股线的环。 然后在包装上游的股线中产生松弛,并且手指向下移动到外层的上端的水平面以下。 最后,将绞线切割到外层的上端的水平面以下。