Device for pressing sheet material

Details Device for pressing sheet material Device for pressing sheet material

1989-12-28

1991-11-26

Jones, David

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

72 63, 72465, 294211, B21D 2212, B21D 2600

Patent

active

050673360

ABSTRACT:
Device for pressing sheet material blanks, in particular sheet metal blanks (10), comprising a cushion (2) composed of an elastic material disposed in a retaining box (1), an arrangement for performing the sheet blank constituted by an outer slide carrying an upper blank holder (6), and an arrangement for finally forming the sheet blank constituted by a central slide acting on a punch (8), the device further comprising a lower blank blank holder constituted by an element (3) for supporting and maintaining at least a portion of the sheet blank (10), placed directly on the elastic cushion (2) and cooperative with the upper blank holder (6) for gripping the sheet blank in at least localized region of the blank.

REFERENCES:
patent: 2422883 (1947-06-01), Bruderlin
patent: 2719500 (1955-10-01), Kraybill
patent: 2783728 (1957-03-01), Hoffmann
patent: 3382690 (1968-05-01), Achler et al.
patent: 3533256 (1970-10-01), Hurek et al.
patent: 3748889 (1973-07-01), Miller et al.
patent: 4770015 (1988-09-01), de Smet
patent: 4833903 (1989-05-01), DeSmet

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