Press frame
AssigneeAida Engineering, Ltd.
InventorMitsuo Sato
Life of this patent
Estimating the term…
Abstract
During press operation, the die gap is adjusted by adjustment members extending between the crown and the bed of the press, which adjustment members act in direction to move the two parts apart. The adjustment members have a hydraulic fluid piston-cylinder means therein, and the distance between the dies is adjusted by expanding or contracting the adjustment members in the axial direction by supplying hydraulic fluid pressure thereto, thereby improving the operation of the press, and making it quite easy to deal with die gap variation during operation of the press and to restore the press to normal operation after a so-called "sticking" condition occurs.
Claims6
In combination, a press frame having a bed, a crown spaced above the bed, connecting means between the crown and the bed supporting the crown on the bed and holding the crown in position relative to the bed, die means on said press frame having upper and lower dies which have a die gap between them when moved to the closest point to each other during operation of the press, and at least one adjustment part extending between the crown and the bed and piston-cylinder means for exerting a force on said adjustment part, which force is transmitted by said adjustment part to said crown for exerting a force on the crown to extend the connecting means and thereby adjust the die gap.
Dependencies are inferred from the claim text.