Glass manufacturing – Processes – With measuring – sensing – inspecting – indicating – or testing
Patent
1986-11-19
1988-02-09
Kellogg, Arthur
Glass manufacturing
Processes
With measuring, sensing, inspecting, indicating, or testing
65160, 65163, 65DIG13, C03B 716
Patent
active
047239778
ABSTRACT:
Method and apparatus for electronically controlling a servo motor drive for glass gob distribution apparatus, to provide accurate high speed motion of one or more scoops. At the set-up stage, the operator adjusts the scoop position with respect to each trough to align scoop and trough in a straight line. During automatic operation, upon receipt of a MOVE command a motion control computer provides digital output signals to move the scoops through a prescribed motion profile, such profile having suitable characteristics to move the scoops over various distances without vibration or overshoot. A digitalized cubic-parabolic-cubic (CPC) curve or similar cam profile is scaled to the amplitude and direction of the required motion, and the motion profile computer outputs command signals on a point-by-point basis over the time span of this stored motion profile. Such time span is designed to provide sufficient dwell time to allow the gobs to traverse the scoops. This motion sequence is reiterated for each successive receiving trough according to the prescribed firing order, using the prior target location to define the starting location of the succeeding scaled motion profile.
REFERENCES:
patent: 4461637 (1984-07-01), Jones et al.
patent: 4529429 (1985-07-01), Wood
patent: 4548637 (1986-10-01), Miller
patent: 4599101 (1986-07-01), Douglas et al.
patent: 4608074 (1986-08-01), Knoth et al.
Paper allegedly given at symposium in 1980 by Heye Glass, "Design Function and Control of the H 1-2 Machine"; See especially pp. 104-107, FIGS. 10,11.
Andersen Robert P.
Grant Marty J.
Peterson George T.
Emhart Industries Inc.
Kellogg Arthur
Moore Arthur B.
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