Cutting – Processes – Blanking
Patent
1991-11-08
1992-10-06
Yost, Frank T.
Cutting
Processes
Blanking
83564, 83566, 83698, 83733, 83856, 834114, 72446, 72462, 72481, 100233, B26D 300
Patent
active
051522047
ABSTRACT:
An improvement is made to a die cutting press and to the method of die cutting in a press by providing two opposing and oppositely driven clamping bars which move together to clamp the die board and to accurately position the clamped die board at a predetermined location within the press. The press is operated to determine the adequacy of the cut produced by the die in sheet material fed into the press. If the cut is unsatisfactory, the opposing clamp bars are quickly driven apart thereby releasing the die board. The die board can be removed from the press and then manipulated or modified to cure any imperfection in the cut. The modified die board is then reinserted into the press and accurately repositioned at the predetermined location within the press by driving the opposing clamping bars towards each other against the die board. The drive mechanism of the clamping bars insures that when the die board is securely clamped, the die board will always be accurately repositioned in the same press at exactly the location assumed by the die board when it was inserted. The opposing moving clamps automatically move the die board to the predetermined position without the need for measurement, registration or concern for variations in tolerances within a jig.
REFERENCES:
patent: 3079846 (1963-03-01), Ford
patent: 3589230 (1971-06-01), Neuman
patent: 3782166 (1974-01-01), Whistler, Jr. et al.
patent: 4274332 (1981-06-01), Nakamura
patent: 4602497 (1986-07-01), Wallis
patent: 4698894 (1987-10-01), Lingaraju et al.
Jones Eugenia A.
Yost Frank T.
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