Automatic lead frame loading machine

Details Automatic lead frame loading machine Automatic lead frame loading machine

1982-03-25

1984-07-03

Spar, Robert J.

Material or article handling

Movable rack having superposed, charge-supporting elements,...

Rack moved vertically by elevating means

29743, 29827, 198403, 198434, 198689, 414763, 414783, B65G 106, B65G 2504

Patent

active

044576625

ABSTRACT:
Lead frames with semiconductor microcircuit chips bonded thereto are automatically rapidly precisely loaded onto loading frames for subsequent encapsulation of the chips. The lead frames are contained within magazines, each lead frame resting on a separate rack therewithin. An air-actuated piston causes a plurality of pusher bars to each eject a lead frame from each of a plurality of the magazines, horizontally disposed, onto a nest member which pivots to invert the lead frames ejected thereon onto the loading frame. The lead frames are precisely positioned on the nest member early in the pivot thereof when the lead frame are caused to slide downwardly on the smooth-surfaced nest member to thereby contact an abutment and to be retained in that precise position by vacuum until deposited on the loading frame.

REFERENCES:
patent: 1836690 (1931-12-01), Talbot
patent: 3753509 (1973-08-01), Kock
patent: 4194865 (1980-03-01), Bandoh
patent: 4278380 (1981-07-01), Guarino
patent: 4373846 (1983-02-01), Charbonnet

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