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    Screw piston feed device
    3.
    发明授权
    Screw piston feed device 失效
    螺丝活塞送料装置

    公开(公告)号：US3726309A

    公开(公告)日：1973-04-10

    申请号：US3726309D

    申请日：1971-02-03

    申请人： BATTENFELD GEB

    发明人： NEUBERT W

    IPC分类号： B29C45/52 ,  F16K15/00 ,  F16K17/00

    CPC分类号： B29C45/52 ,  Y10T137/7904

    摘要： The invention relates to non-return valves for screw pistons devices for extrusion moulding of plastic material, in which the material is in a first mode conveyed by the rotary movement and extrusion of the material takes place in a second mode by the axial movement of the screw; a non-return valve is provided which allows the material to pass during the first mode to the front end of the screw and in the second mode closes to prevent the compositions from being driven back down the screw, the valve being formed as a ring around the screw which rings is allowed limited axial movement but substantially no rotational movement, the valve ring when open, allowing a passage for the material between it and the screw shaft and when closing the ring moves relatively back on the screw shaft to seat on the shaft and close the passage.

    摘要翻译： 本发明涉及用于塑料材料挤出成型的螺杆活塞装置的止回阀，其中材料处于通过旋转运动传送的第一模式，并且材料的挤出通过轴向运动而以第二模式进行 拧; 提供了止回阀，其允许材料在第一模式期间通过到螺杆的前端，并且在第二模式中关闭以防止组合物被驱动回到螺杆上，阀形成为围绕环 允许环的螺钉被限制为轴向运动，但是基本上没有旋转运动，阀环在打开时允许在其与螺杆轴之间的材料的通道，并且当关闭环时，相对地在螺杆轴上向后移动以安置在轴上 并关闭通道。