Methods and apparatus for positioning an article laterally on a

Details Methods and apparatus for positioning an article laterally on a Methods and apparatus for positioning an article laterally on a

1976-11-18

1978-01-24

Werner, Frank E.

Conveyors: power-driven

Conveyor system for arranging or rearranging stream of items

By laterally or vertically moving successive items in...

29587, 198345, 214152, B65G 3500

Patent

active

040699242

ABSTRACT:
Subassemblies, comprising an integrated circuit bonded to a conductor pattern on a small ceramic substrate, are automatically bonded to lead frames. In carrying out this operation, each subassembly is placed on a support and precisely positioned thereon. Rollers are symmetrically disposed about the centerline of a resiliently mounted roller support or yoke. The minimum distance between opposite rollers is less than the distance across the subassembly and the centerline is coincident with the position desired on the support. The yoke and rollers are advanced toward the subassembly to contact it and shift it on the support until opposite rollers contact opposite sides of the subassembly. At that time the assembly is positioned and the advancement of the rollers stops. Vacuum is applied to maintain the position of the subassembly on the support for bonding.

REFERENCES:
patent: 3221374 (1965-12-01), Fornes
patent: 3355856 (1967-12-01), Randrup
patent: 3472356 (1969-10-01), Reppert
Western Electric Technical Digest No. 40-Oct. 1975, p. 7; "Mechanism for Centering Substrates," Cross, et al.

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