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1. 发明授权

US3925132A Method of forming circumferentially extending ribs on a rotating shell 失效
标题翻译：在旋转壳体上形成循环延伸RIBS的方法
公开(公告)号：US3925132A
公开(公告)日：1975-12-09
申请号：US28863872
申请日：1972-09-13
申请人： OWENS CORNING FIBERGLASS CORP
发明人： BARTLOW DAVID H , JONES BERNARD HOWARD , PEARSON LEE E
IPC分类号： B29C53/58 , B32B17/04
CPC分类号： B29C53/583 , Y10T156/1028 , Y10T428/1314
摘要： A method of forming ribs on a revolving shell in generally parallel circumferentially extending relationship. Each rib is built over a strip form having a cross section that is an isoceles trapezoid that is positioned with the base or wide parallel side against the shell, and the narrow parallel side forming the crown. A strip of glass fiber mat wetted with resin is carried by a band of individually tensioned strands which are attached to the revolving shell, and are wrapped therearound by the revolving shell. The band of strands is divided into three groups, the center of which is positioned over the crown and the outside groups of which are positioned over the inclined surfaces of the strip form. As the revolving shell pulls the individually tensioned strands over the rib, the outside groups pull the mat strip against the inclined sides of the rib form, and thereafter slide down the inclined surfaces of the mat to smooth out wrinkles. Finally the outside groups come to rest over the portions of the shell on opposite sides of the rib form to anchor to mat firmly in engagement with the shell and in tight engagement with the rib form. The materials are preferably fed to the underside of the revolving shell so that the strands may also carry the mat and the rib form to the surface of the revolving shell.

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