Semiconductor slice prealignment system

Details Semiconductor slice prealignment system Semiconductor slice prealignment system

1975-12-24

1977-05-24

Love, John J.

Conveyors: power-driven

Conveyor for changing attitude of item relative to conveyed...

By conveying randomly faced items and turning items to...

198395, 198414, 302 2R, B65G 4724

Patent

active

040249441

ABSTRACT:
A system for the alignment and orientation of disc-like objects having transport means to move the object gently onto a turntable and against an arcuate resilient stop to a centered position on the turntable; an array of non-contact sensors is advanced toward the rotational axis of the turntable until one of the sensors detects the edge of the object; the turntable is rotated until the sensors detect an indexing flat on the object; the sensor arrays advance and the turntable rotated until the sensors indicate the desired alignment and orientation of the object has been achieved. Logic circuitry controls the sensor and turntable positions automatically in response to signals received from the sensors.

REFERENCES:
patent: 3289808 (1966-12-01), Simmons
patent: 3297134 (1967-01-01), Pastuszak
patent: 3312325 (1967-04-01), Beck et al.
patent: 3439792 (1969-04-01), Frank et al.
patent: 3603646 (1971-09-01), Leoff
patent: 3645581 (1972-02-01), Lasch, Jr. et al.
patent: 3812947 (1974-05-01), Nygaard
patent: 3820647 (1974-06-01), Waugh, Jr. et al.
patent: 3865254 (1975-02-01), Johannsmeir
patent: 3890508 (1975-06-01), Sharp
patent: 3930684 (1976-01-01), Lasch, Jr. et al.
patent: 3982627 (1976-09-01), Isohata
Vol. 14, No. 4, IBM Technical Disclosure Bulletin, p. 1021, Sept. 1971.
Vol. 18, No. 8, IBM Technical Disclosure Bulletin, pp. 2529-2530, Jan. 1976.

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