Method and a device for embossing heat exchanger plates

Metal deforming – Process – Deforming sheet metal

Patent

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Details

72382, 72385, 72414, 72465, 291573R, B21D 5302

Patent

active

044346433

ABSTRACT:
The invention relates to a method of embossing heat exchanger plates in several steps by a pressing tool, in that after a portion of the sheet blank has been embossed a subsequent portion of the blank is embossed, after this has been positioned and fixed in place between the punch and the die of the press. The positioning and clamping takes place in such a manner that a groove with zigzag extension pressed at the preceding embossing step in the sheet is caused to engage between a groove and, respectively, a bead arranged in the punch and the die which prior to the embossing are moved against each other and inside of the plane of the punch and, respectively, die by spring force.

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patent: 2438837 (1948-03-01), Archer et al.
patent: 2948325 (1960-08-01), Welindt
patent: 3307387 (1967-03-01), Lacey, Jr. et al.
patent: 3319452 (1967-05-01), Rethwish et al.
patent: 3748889 (1973-07-01), Miller et al.
patent: 3762206 (1973-10-01), Wright et al.
patent: 3824664 (1974-07-01), Seeff
patent: 3892119 (1975-07-01), Miller et al.
patent: 4022050 (1977-05-01), Davis et al.

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