Conveyors: power-driven – Conveyor section – Reciprocating conveying surface
Reexamination Certificate
2000-07-03
2002-04-23
Gordon, Stephen T. (Department: 3612)
Conveyors: power-driven
Conveyor section
Reciprocating conveying surface
C198S468400, C414S797000, C414S752100, C901S016000, C901S017000
Reexamination Certificate
active
06374996
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a circuit board carrier, and more particularly to a carrier which carries circuit boards in a manner of simple harmony motion in order to achieve a stable conveyance without shaking.
2. Description of the Prior Art
A conventional circuit board carrier
1
, as shown in
FIG. 1
, is primarily operated in a manner that the circuit boards (P) is sucked by a sucking device
11
which is controlled by a pneumatic cylinder
12
to shift the circuit boards (P) between a conveyor
2
and a holder
3
. Due to the short conveyance distance, a smooth motion can't, however, be achieved to set the sucking device
11
in position even if a most precise pneumatic cylinder
12
is used. A momentary deceleration in reaching a certain point will shake the whole machine so that the precision will greatly influenced.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide a circuit board carrier which has a sucking device disposed under a sliding base above which a pair of sliding rod and sliding piece are disposed vertically to the sliding direction. The sliding piece includes a sliding seat on which a pivot sleeve is mounted. The pivot sleeve is attached with a turning arm which is driven by a motor in order to bring the sucking device to make a simple harmony motion with the sliding base. Accordingly, a stability can be achieved in carrying the circuit boards.
REFERENCES:
patent: 3587888 (1971-06-01), Warren
patent: 3865253 (1975-02-01), Haely
patent: 4370092 (1983-01-01), Healy
Engle Patricia
Gordon Stephen T.
Rosenberg , Klein & Lee
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