Metal deforming – By plural tool-couples
Patent
1977-11-28
1979-07-10
Larson, Lowell A.
Metal deforming
By plural tool-couples
72421, 72462, 83698, B21J 1302
Patent
active
041603729
ABSTRACT:
A transfer press having a plurality of generally linearly spaced die stations, a transfer mechanism for successively advancing blanks or partially stamped parts from one station to the next each cycle of the press and quick change upper and lower die plates mounted in fixtures attached to the press slide and bed or bolster, respectively. Each of the die sets includes a plurality of die fixtures having extendible and retractable clamps which open to permit a die plate to be slid therein and approximately located by means of locating ears on the die plate which contact the forward surface of the respective fixture or by contacting locating blocks at the rear of the fixture. When the clamps are retracted, the die plates are pulled downwardly and are accurately located by means of a plurality of locating pins which engage corresponding apertures in the plates. The clamps lock the plates in their final operative positions for the successive stamping operations. In order to minimize the distance between adjacent fixtures, which is of the utmost importance if the advantages of a transfer system are to be realized, a single clamp mechanism engages the facing edges of each adjacent pair of fixtures.
REFERENCES:
patent: 3079817 (1963-03-01), Sanford
patent: 3104574 (1963-09-01), Andersen
patent: 3111895 (1963-11-01), Kraft
patent: 3327575 (1967-06-01), Duffee
patent: 3422657 (1969-01-01), Grombka
patent: 3435655 (1969-04-01), Akikazu
patent: 3881343 (1975-05-01), Ducate
patent: 3995470 (1976-12-01), Kamelander
Bergman Roland J.
Fortman Richard F.
Meyer Richard J.
Crosby Gene P.
Hoffman John F.
Jeffers Albert L.
Larson Lowell A.
The Minster Machine Company
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