| 摘要 |
A cup-shaped article former has a hollow cylindrical redraw blankholder which moves from a rearward article feed position axially forwardly into a rearwardly opening cup-shaped article and positions the article against a redraw die ring maintaining a predetermined pressure thereon while a reciprocal ram moves forwardly internally of the blankholder and article engaging the article and carrying it forwardly between the blankholder and die ring in a drawing operation. The blankholder is moved forwardly and rearwardly between rearward article feed and forward article drawing positions and is maintained precisely positioned in the article drawing position by securement of the blankholder to a blankholder mounting frame secured to forward ends of spaced, reciprocal rods, the rods extending rearwardly of the former and being pivotally connected to upper ends of pivotal cam follower arms. The cam follower arms mount cam followers thereon engaged with cam surfaces of rotatable cams, the cam followers being maintained against the cam surfaces under constant pressure of retention air cylinders. A rearwardly compressible and forwardly expansible air cylinder is formed in the blankholder mounting frame for securing the blankholder to the blankholder mounting frame so as to exert a force against the cup-shaped article resisted by the cup-shaped article engagement against the redraw die ring during movement of the article from the blankholder through the die ring by the ram. A motion limiting mechanism is associated with the blankholder mounting frame air cylinder and the blankholder retaining the blankholder spaced from the die ring as the article leaves the blankholder and finally passes completely through the die ring.
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