公开(公告)号：US4358263A

公开(公告)日：1982-11-09

申请号：US286522

申请日：1981-07-24

申请人： Motoatsu Shiraishi ,  Tatsushi Matsuda ,  Masao Sano

发明人： Motoatsu Shiraishi ,  Tatsushi Matsuda ,  Masao Sano

IPC分类号： B21D24/04 ,  B21D22/02 ,  B21D22/06 ,  B21D24/06 ,  B21D24/16 ,  B21D43/00 ,  B21D45/04 ,  B29C17/00

CPC分类号： B21D43/26 ,  B21D22/02 ,  B21D22/06 ,  Y10S425/048

摘要： A press of improved moldability and operation efficiency, including an upper movable die having a concave bottom surface, a lower, stationary arc having a convex top surface conforming to the concave bottom surface of the upper die, a blank holder arranged around the lower die for vertical sliding movement, and a blank support lever arm pivotally mounted on top of the blank holder. The blank holder is normally held raised by cushion means in such a position that its top surface is lower than the crest of the convex top surface of the lower die. The blank support lever arm is normally biased to a horizontal position to support a blank in a horizontal position in co-operation with the crest of the lower die and is tilted down by the upper die in downstroke movement out of its path, allowing the blank to be pressed down.

摘要翻译： 具有改进的成形性和操作效率的压制机，包括具有凹形底表面的上可动模具，具有与上模具的凹下底表面相符的凸顶表面的下静止弧，围绕下模设置的坯件保持架 垂直滑动运动，以及可旋转地安装在坯料支架顶部上的空白支撑杆臂。 通常通过缓冲装置将坯料保持器升高到其顶面低于下模的凸顶表面的顶部的位置。 空白支撑杆臂通常被偏压到水平位置，以在与下模的顶部配合的同时支撑位于水平位置的坯料，并且在下行程移动下方的上模向下倾斜超出其路径，允许空白 被压下