公开(公告)号：US4565512A

公开(公告)日：1986-01-21

申请号：US611747

申请日：1984-05-18

申请人： Peter R. Wills ,  Richard C. Cowley

发明人： Peter R. Wills ,  Richard C. Cowley

IPC分类号： B29C47/10 ,  B29C47/54 ,  B29C47/58 ,  B29C47/66 ,  B29C47/76 ,  B29C47/92 ,  B29C69/00 ,  B29K21/00 ,  B28B17/00

CPC分类号： B29C47/0066 ,  B29C47/1009 ,  B29C47/54 ,  B29C47/76 ,  B29C2793/0063 ,  B29C47/0009 ,  B29K2021/00 ,  Y10S425/243

摘要： The disclosure relates to a ram extruder including an extruder barrel having an extrusion die at one end and a hydraulic ram at the other end having a piston which is advanced along the barrel by the ram to displace material in the barrel through the extrusion die. To facilitate loading of the barrel a loading port is provided in the side of the barrel adjacent said other end of the barrel through which the barrel may be charged after retraction of the piston following an extrusion operation and a port closure device is provided to close the port after extrusion and evacuate air from the barrel prior to advancing the piston past the port to minimize the air contained in the barrel prior to the extrusion operation.

摘要翻译： 本公开涉及一种冲压式挤出机，其包括在一端具有挤出模头的挤出机筒，另一端具有液压压头，所述挤压机筒具有活塞，所述活塞通过所述冲头沿所述筒推进，以通过所述挤出模移置所述筒体中的材料。 为了便于装载筒体，在筒体的靠近筒体的另一端的侧面设置有装载口，在挤出操作之后，活塞缩回之后，筒体可以被装入，并且提供端口关闭装置以封闭 在挤出之前将空气从筒体排出，然后使活塞通过端口前进，以使在挤压操作之前容纳在桶中的空气最小化。

公开(公告)号：US4338073A

公开(公告)日：1982-07-06

申请号：US253153

申请日：1981-04-10

申请人： Aleksander Wielesiuk

发明人： Aleksander Wielesiuk

IPC分类号： B29C70/68 ,  B29C15/00

CPC分类号： B29C43/46 ,  B29C43/18 ,  B29K2105/258

摘要： The disclosure relates to an apparatus for applying a polymeric covering to a workpiece such as a cylindrical workpiece (10). In order to apply smooth surfaced coating firmly bonded to the workpiece in a single operation the workpiece is rotated in a lathe about an axis (11) and a rubber applying head is traversed parallel to the axis along the workpiece. The head has a freely rotatable tapered feed roller (19) forming a nip with the workpiece to apply polymeric material to the workpiece, a main roller (23) adjacent the feed roller and also forming a nip with the workpiece to pressurise and render plastic the rubber coating applied by the feed roller to masticate and compound the layer, a pressure surface (24) adjacent the main roller and incorporating a retractable plough (25) to dig into the rubber coating and release any entrapped air and a finish roller (26) to apply the required surface finish to the rubber coating. All the rollers are so angled in relation to the direction of travel of the head and the axis of rotation of the workpiece that they rotate automatically by engagement with the rubber layer on the workpiece to act on the rubber layer as the head is traversed along the workpiece.

摘要翻译： 本公开涉及一种将聚合物覆盖物施加到诸如圆柱形工件（10）的工件上的装置。 为了在单次操作中使工件平滑地贴合到工件上，使工件在车床周围绕轴线（11）旋转，并且橡胶施加头沿着工件平行于轴线移动。 头部具有可自由旋转的锥形进给辊（19），与工件形成辊隙以将聚合物材料施加到工件，邻近进料辊的主辊（23）并且还与工件形成压力以使塑料变形 通过进料辊施加的橡胶涂层以将层压缩和复合，邻近主辊的压力表面（24）并且包括可伸缩的犁（25）以挖入橡胶涂层并释放任何夹带的空气和精整辊（26） 将所需的表面光洁度应用于橡胶涂层。 所有的辊子相对于头部的行进方向和工件的旋转轴线成角度，它们通过与工件上的橡胶层接合而自动旋转，以当头部沿着 工件。