公开(公告)号：US3940965A

公开(公告)日：1976-03-02

申请号：US555918

申请日：1975-03-06

申请人： Eugene W. Sivachenko ,  Howard G. Pratt

发明人： Eugene W. Sivachenko ,  Howard G. Pratt

IPC分类号： B21D13/04 ,  B21C37/12 ,  B21D5/06

CPC分类号： B21C37/121 ,  B21C37/126

摘要： A corrugated pipe forming apparatus and method in which flat sheet metal is passed through a plurality of first and second opposite roller pairs and deformed into a corrugated sheet. Lateral lips are formed parallel to the edges of the sheet and extend generally perpendicular to the sheet over the full length thereof. A pipe rolling machine helically deforms the corrugated sheet and folds the lip into a mechanical lock seam defining Pittsburgh lock of predetermined dimensions and tolerances. To maintain such dimensions and tolerances the width of the lips is adjusted by simultaneously moving one roll of each set in identical increments towards and away from the other roll of each set to thereby correspondingly change the depth of the corrugations and the width of the lips. The sheet can be moved laterally to maintain the lips of equal width. Corrugating stations of the device are defined by opposed corrugating rollers with the upper rollers held on a first frame and the lower rollers held on a second frame. Each frame includes opposite and rigid sides interconnected by fixed rigid axles. Opposed upper and lower rollers are journaled at their respective ends about each of the respective axles.

摘要翻译： 一种波纹管形成装置和方法，其中平板金属穿过多个第一和第二相对辊对并变形成波纹片。 横向唇缘平行于片材的边缘形成，并且在其整个长度上大致垂直于片材延伸。 管道轧制机使波纹板螺旋形变形并将唇缘折叠成限定具有预定尺寸和公差的匹兹堡锁的机械锁缝。 为了保持这样的尺寸和公差，通过同时以相同的增量朝向和远离每个组的另一个辊移动每组的一个辊来调整唇部的宽度，从而相应地改变波纹的深度和唇部的宽度。 片材可以横向移动以保持相等宽度的嘴唇。 装置的瓦楞站由相对的瓦楞辊定义，上辊保持在第一框架上，下辊保持在第二框架上。 每个框架包括由固定的刚性轴相互连接的相对且刚性的侧面。 相对的上下辊在它们各自的端部围绕每个相应的轴轴颈。