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1. 发明授权

US5678440A Screw conveyors, augers and flighting for use therein 失效
标题翻译：螺旋输送机，螺旋推运器和飞行用于其中
公开(公告)号：US5678440A
公开(公告)日：1997-10-21
申请号：US699188
申请日：1996-08-19
申请人： Michael Douglas Hamilton
发明人： Michael Douglas Hamilton
IPC分类号： B21D11/06 , B21H3/12 , B65G33/26 , B21D11/14 , B21D31/00
CPC分类号： B65G33/265 , B21D11/06 , B21H3/12
摘要： In a continuous screw conveyor or auger, the rotatable screw member (12) comprises a helical radial blade (28) (known as "flighting") which is preferably carried on a central driving shaft (26). The flighting (28) is formed by rolling a rectangular metal strip of uniform thickness between a pair of opposed, preferably offset, conical rolls (56, 58). In contrast to prior art rolls which have similar unstepped conical rolling surfaces, and produce a helical blade of which the radial thickness reduce progressively from the inner helical edge (30) of the blade to the outer helical edge (32), the present invention provides on at least one of those rolls (58) a stepped conical rolling surface (94) formed so as to exert less rolling pressure on an outer portion of the helical blade (28) being formed, thereby to produce a blade in which the outer portion is of a thickness (preferably uniform) which is no less than and preferably greater than that of an inner part of the blade lying immediately radially inwards thereof.
摘要翻译：在连续的螺旋输送机或螺旋推运器中，可旋转螺杆构件（12）包括优选地承载在中心驱动轴（26）上的螺旋形径向叶片（28）（称为“排出”）。飞行（28）通过在一对相对的，优选偏移的圆锥形辊（56,58）之间滚动均匀厚度的矩形金属条来形成。与现有技术的辊相比，其具有类似的非冲压锥形滚动表面，并且产生径向厚度从叶片的内螺旋边缘（30）逐渐减小到外螺旋边缘（32）的螺旋叶片，本发明提供在这些辊（58）中的至少一个辊（58）上形成有形成为在所形成的螺旋叶片（28）的外部部分施加较少的压力的阶梯状的锥形滚动面（94），从而产生叶片，其中外部具有厚度（优选均匀的），其不小于并且优选地大于直接位于其内侧的叶片的内部部分的厚度。

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