PRESS MACHINE AND PRESSING METHOD
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United States of America Patent
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Issued Date -
Aug 6, 2015
app pub date -
Jan 13, 2015
filing date -
Jan 31, 2014
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A press machine includes a lower die having a step portion for forming a bent portion on a side surface, a pad portion supported by a spring and disposed adjacent to the lower die in the horizontal direction, being movable upward and downward, an upper die disposed opposing the pad portion in the vertical direction, and a regulation portion. When the upper die moves downward and presses a steel plate between the upper die and the pad portion to form a bent portion in an edge portion of the steel plate, the regulation portion moves together with the upper die and regulates the motion of the edge portion of the steel plate protruding from the lower die in the horizontal direction, thereby preventing a wrinkle from forming in the edge portion of the steel plate.
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