公开(公告)号：US4060445A

公开(公告)日：1977-11-29

申请号：US607325

申请日：1975-08-25

申请人： Staley J. Houck ,  Michael W. Smith

发明人： Staley J. Houck ,  Michael W. Smith

IPC分类号： B29D30/24 ,  B29H17/16 ,  B29H17/22

CPC分类号： B29D30/247 ,  B29D2030/2635 ,  B29D2030/3214 ,  B29D2030/3228 ,  Y10T279/1029

摘要： A simple low cost building drum, free of axially movable parts for building tires and cylindrical articles having inextensible beads of given diameter therein but spaced axially any selected distance apart, has a single axially and circumferentially continuous radial expandable membrane overlying a thick-walled cylinder of deformable rubbery material the full axial length of which is expandable radially to wrap the membrane against beads placed about the drum and to divide the membrane into a non-inflatable center section and two inflatable end sections each axially outboard of a respective bead. The thick-walled cylinder is expanded radially by inflating an axially extending cylindrical sleeve within control members in the form of four semi-cylindrical strips which prevent bulging outward of the central portion of the thick-walled cylinder and which engage cylindrical flanges of a pair of end rings spaced along the drum's center shaft.

摘要翻译： 一个简单的低成本的成型鼓，没有用于建造轮胎的轴向可移动部件和具有给定直径的不可伸展的珠粒并且在轴向间隔开任意选定的距离的圆柱形制品，具有单个轴向和周向连续的径向可膨胀膜，其覆盖厚壁圆柱体 可变形的橡胶材料，其全部轴向长度可径向扩张，以将膜包裹在围绕滚筒周围的珠子上，并将膜分成不可膨胀的中心部分和两个各自的珠的轴向外侧的可充气端部。 厚壁圆柱体通过使四个半圆柱形的形式的控制构件内的轴向延伸的圆柱形套筒膨胀而径向膨胀，该圆柱形套筒防止膨胀在厚壁圆柱体的中心部分的外侧并与一对 端环与鼓的中心轴间隔开。