Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Mold motion or position control
Patent
1984-08-29
1986-06-10
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Mold motion or position control
264 405, 425590, B29C 4564, B29C 4576
Patent
active
045940657
ABSTRACT:
A control arrangement for moving tools brings these tools quickly into a desired position smoothly and without shock. The arrangement comprises means for preadjusting the required displacement so that the whole displacement path corresponding to the movement sweep of the tool is first determined. A calculation member (4) converts a given delay of the tool movement into a value corresponding to the speed of movement. An integrator (6) derives from the calculated speed value as a function of time a required position value. Upon movement of the tool the means for preadjusting the required displacement are continuously readjusted and the adjusted value for the drive (25) is determined by means of a comparison with the position value supplied by the actual displacement pick-up device (8).
REFERENCES:
patent: 3616495 (1971-11-01), Lemelson
patent: 3647309 (1972-03-01), Thompson
patent: 3825386 (1974-04-01), Bello
patent: 3859400 (1975-01-01), Ma
patent: 4131596 (1978-12-01), Allen
patent: 4230442 (1980-10-01), Reese et al.
patent: 4377377 (1983-03-01), Arends et al.
Langlois Jacques A. E.
Liebetraut Klaus A.
Franzblau Bernard
Heitbrink Timothy W.
Mayer Robert T.
U.S. Philips Corporation
Woo Jay H.
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