公开(公告)号：US4580757A

公开(公告)日：1986-04-08

申请号：US663936

申请日：1984-10-23

申请人： Herbert Dobhan ,  Elmar Kaiser ,  Bruno Schemmel ,  Hilmar Leuner ,  Werner Schneider ,  Manfred Brandenstein ,  Oskar Bretscher

发明人： Herbert Dobhan ,  Elmar Kaiser ,  Bruno Schemmel ,  Hilmar Leuner ,  Werner Schneider ,  Manfred Brandenstein ,  Oskar Bretscher

IPC分类号： B60B27/02 ,  B29C45/14 ,  B29C45/26 ,  B29C45/27 ,  B29C45/38 ,  B29K105/20 ,  B29L31/32 ,  B60B33/00 ,  F16C13/00 ,  B29C33/00 ,  B29C33/76

CPC分类号： F16C13/006 ,  B29C45/1459 ,  B29C45/2616 ,  B29C45/2701 ,  B60B33/0028 ,  F16C35/067 ,  B29C2045/2714 ,  B29C45/14311 ,  B29C45/2708 ,  F16C19/08

摘要： Apparatus for making a molded plastic roller with embedded bearings. The roller is formed directly on a bearing or the like by injecting plastic into a mold by way of an umbrella sprue. The tool parts are arranged so that the shearing surface, formed after shearing off of the sprue residue when the mold is opened, is located on the outer surface of the inner collar portion. The molding tool comprises two tool parts for forming the outer surfaces of the rolling body, at least one tool part having a molding portion for forming an annular recess in the roller, and a cylindrical tool part inserted in the bearing, or the like and having a mushroom-shaped head. A back taper of the molding portion for forming the annular recess and the edge of the head together define an annular clearance through which plastic material is injected. The head has a planar surface which covers the bearing or the like and serves as the molding surface for the sides of the inner collar portion, and a spherical surface for defining the umbrella sprue.

摘要翻译： 用于制造具有嵌入式轴承的模制塑料辊的装置。 滚筒通过伞形浇口将塑料注入模具中直接形成在轴承等上。 工具部件被布置成使得当打开模具时剪切出浇道残渣后形成的剪切表面位于内圈部分的外表面上。 成形工具包括用于形成滚动体的外表面的两个工具部件，至少一个具有用于在辊中形成环形凹部的模制部分的工具部分和插入到轴承等中的圆柱形工具部件，并且具有 一个蘑菇形的头。 用于形成环形凹部和头部边缘的模制部分的后锥形限定了注射塑性材料的环形间隙。 头部具有覆盖轴承等的平面，用作内圈部的侧面的成型面，以及用于形成伞形浇口的球面。