Die control speed rate conversion device for powder mold press

Details Die control speed rate conversion device for powder mold press Die control speed rate conversion device for powder mold press

1994-03-17

1996-12-03

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Mold motion or position control

425 78, 425352, 425355, 425415, B29C 4358, B30B 1102

Patent

active

055805868

ABSTRACT:
A die control speed rate conversion device for a powder mold press wherein the timing for oil release from a hydraulic circuit can be obtained by the angle signal (position signal) from a rotary encoder on the main axis of the press actuating synchronously with an upper punch, and the speed of descent of a die relative to an upper ram can be controlled at any rate ranging from 1:1 to 1:1/4 by a sevomotor controlled by the signal from a linear sensor detecting the movement of the upper ram.

REFERENCES:
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patent: 3868201 (1975-02-01), Jacobson et al.
patent: 4260346 (1981-04-01), Anderson, Jr. et al.
patent: 4370119 (1983-01-01), Watanabe
patent: 4379684 (1983-04-01), Katagiri et al.
patent: 4392800 (1983-07-01), Apuzzo
patent: 4460326 (1984-07-01), Croseck et al.
patent: 4923382 (1990-05-01), Klein
patent: 5043111 (1991-08-01), Hinzmann et al.

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