Method of and an apparatus for processing a lead frame

Details Method of and an apparatus for processing a lead frame Method of and an apparatus for processing a lead frame

1993-04-09

1994-12-13

Hearn, Brian F.

Fishing, trapping, and vermin destroying

437214, 437217, 437220, 437211, H01L 2160

Patent

active

053729722

ABSTRACT:
Improved transportation accuracy of a lead frame and reduced transportation time is attained. On the both sides of a heat block (1), rails (3a) equipped with a vertical drive mechanism are provided. By rotation of a screw shaft (7), a lead frame (4) is moved from front side to rear side of the heat block (1) along guide rails (3b) and the movable rails (3a) while holding the lead frame (4) by a clamp (5c) which has freedom of horizontal and vertical movements. During this transportation, a sensor (8) detects the position of the lead frame (4). A frame presser member (2) is mounted above the heat block (1) and equipped with a vertical drive mechanism for pressing the lead frame (4) against the heat block (1). The lead frame (4) is fed to a predetermined point by one motion of the clamp (5c) while firmly held by the clamp (5c) without frictionally contacting the heat block (1).

REFERENCES:
patent: 3887996 (1975-06-01), Hartleroad et al.
patent: 5183724 (1993-02-01), Johnson
patent: 5186719 (1993-02-01), Egashira et al.
patent: 5264002 (1993-11-01), Egashira et al.

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