Lead frame unloading tool having sliding blocks

Details Lead frame unloading tool having sliding blocks Lead frame unloading tool having sliding blocks

1996-12-13

1999-09-28

Merritt, Karen B.

Material or article handling

Apparatus for moving intersupporting articles into, within,...

Unstacking apparatus

414900, 294 65, B66C 100

Patent

active

059576545

ABSTRACT:
A lead frame unloading apparatus includes a pair of opposing plate members, one of which has a long horizontal slit. The opposing plate members define a central space where one or more sliding blocks are located, each of the sliding blocks having a vertical through hole at its center. A picker penetrates through the vertical hole within each respective sliding block, each picker is immobilized when it contacts a lead frame for pickup thereby allowing the sliding block to move vertically up and down on the immobilized pickers, each of the pickers having a vacuum suction device at one end thereof, and a vacuum screw at the other end thereof. The vacuum screw has a hollow projection connected to a vacuum supplier. A spring is disposed beneath respective of the one or more sliding blocks, with the spring being fitted to an outside of the vacuum suction device. Spring stoppers support the springs and fastening devices fasten the one or more sliding blocks to the opposing plate members. The one or more sliding blocks are horizontally movable within the central space between the two opposing plate members by loosening the fastening devices.

REFERENCES:
patent: 3860280 (1975-01-01), Karlsson
patent: 4685714 (1987-08-01), Hoke
patent: 5284413 (1994-02-01), Wilkinson et al.
patent: 5575376 (1996-11-01), Colamussi
patent: 5653575 (1997-08-01), Park et al.
patent: 5685589 (1997-11-01), Kikuchi et al.

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