Drawing apparatus in the bedplate of a press
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United States of America Patent
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-
Sep 7, 1993
Grant Date -
N/A
app pub date -
Apr 14, 1992
filing date -
Apr 20, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drawing apparatus pressure pins acting upon the metal sheet holder in the bottom part of the tool are selected, has additional pressure cylinders fastened in the pressure cheek between the actual drawing apparatus acting upon a pressure cheek and the pressure pins. These additional pressure cylinders are individually controllable via valves from a pressure pipe. As a result, a precise influence is made on the drawing conditions of various sheet metal parts and their ejector movement from the bottom part of the tool.
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