Apparatus for removing and storing semiconductor device trays

Details Apparatus for removing and storing semiconductor device trays Apparatus for removing and storing semiconductor device trays

1998-04-16

1999-05-25

Krizek, Janice L.

Material or article handling

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

Unstacking apparatus

221222, 221297, 4147953, B65G 5906

Patent

active

059064722

ABSTRACT:
A tray removing apparatus is provided which is capable of automatically removing trays loaded with ICs to be tested from a tray storage container open only at its bottom and delivering the trays to an IC testing apparatus, and a tray storing apparatus is also provided which is capable of storing trays loaded with tested ICs into the tray storage container. Stacked trays KST taken out of the tray storage container KAS are supported by first engagement hooks 12A, and an elevator 14 is brought into abutment against the bottom of the stacked trays. In such condition, the first engagement hooks are released from their engagement with the stacked trays and second engagement hooks 12B disposed at an elevation lower than the first engagement hooks by one tray thickness are moved to the engaged position. The elevator is lowered to support the stacked trays by the second engagement hooks, and in this condition the first engagement hooks are moved into engagement with the second lowermost one of the stacked trays while the second engagement hooks are moved to the non-engaged position, and then the elevator is lowered to take out only the lowermost one of the stacked trays.

REFERENCES:
patent: 4715501 (1987-12-01), Sato et al.
patent: 4897019 (1990-01-01), Lemaire et al.
patent: 4971514 (1990-11-01), Hunter

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