Material or article handling – Vertically swinging load support – Grab
Patent
1990-03-16
1991-12-24
Spar, Robert J.
Material or article handling
Vertically swinging load support
Grab
269 57, 269 61, 901 6, 901 8, 414225, B66C 1300
Patent
active
050747410
ABSTRACT:
The invention relates to a manipulator for positioning workpieces with respect to an industrial robot (4) by which the work pieces, one after the other, are to be processed. The manipulator (2) comprises at least two fixture supports (26,27) each having fixture members for holding a respective work piece, a holder (16) for the fixture supports, movably suspended for moving one of said fixture supports from a loading position, in which exchange of a work piece held in said fixture members may take place, towards an operative position within the operating range of the robot, while simultaneously moving another one of said fixtures from the operative position towards the loading position. A turning servo motor (32) common to the fixture supports is drivingly engageable with a fixture support (26) held in the operative position so as to be able to rotate said fixture support, e.g. as controlled by a control system coordinating the operation of the motor with the operational movements of the robot in order to render various surface portions and parts of the work piece accessible to an implement handled by the robot. Coupling structures (30,38,40) are arranged for drivingly coupling said motor (32) to said holder (16) when the motor is out of engagement with any fixture support so as to enable use of the motor (32) as a driving structure for said holder (16) during the operative movements thereof.
REFERENCES:
patent: 3799006 (1974-03-01), Keller
patent: 4666363 (1987-05-01), Johansson
patent: 4741078 (1988-05-01), Kimura
Spar Robert J.
Torsteknik AB
Underwood Donald W.
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