公开(公告)号：US5616350A

公开(公告)日：1997-04-01

申请号：US419306

申请日：1995-04-10

申请人： Siegfried R. Wissmann ,  Herschel Reaves

发明人： Siegfried R. Wissmann ,  Herschel Reaves

IPC分类号： B29C47/70 ,  B29C47/10 ,  B29C47/26

CPC分类号： B29C47/0816 ,  B29C47/70 ,  B29C47/0009 ,  Y10T137/8782

摘要： The present invention provides a dual flow divider for use on an extruder. The flow divider is configured to separate the melt stream received from the extruder at a central entry into two flow channels, the respective channels being formed as nearly to identical (mirror image) as is practically possible. The relative flow in the respective channels can be varied by rotating a diverter valve that extends to a position adjacent the central entry of the flow divider, i.e., where the flow begins to divide. The flow channels and control end of the diverter valve are specially configured to avoid any shape or surface conditions that would impose heat-generating restrictions to material flow, and/or allow areas of stagnation in the flow stream. More specifically, the flow channels are machined to provide smooth, streamlined transitions at all points along the flow path. The surfaces of the flow channels which intersect with the diverter valve do so at a sharp edge; this geometry blends the surfaces of the channels and valve while also serving as a "wiper" when the valve is rotated.

摘要翻译： 本发明提供一种用于挤出机的双流分隔器。 分流器构造成将在中心入口处的从挤出机接收的熔体流分离成两个流动通道，各个通道形成为几乎相同（镜像），实际上可能。 可以通过旋转延伸到与分流器的中心入口相邻的位置，即流动开始分开的位置的转向阀来改变相应通道中的相对流动。 分流阀的流动通道和控制端被特别地构造成避免了将对材料流动施加发热限制的任何形状或表面条件，和/或允许流动流中停滞的区域。 更具体地，流动通道被加工以在沿着流动路径的所有点处提供平滑的，流线型的过渡。 与分流阀相交的流道的表面在锋利的边缘进行; 这种几何形状混合了通道和阀门的表面，同时当阀门旋转时也作为“刮水器”。