Conveyors: power-driven – With means to facilitate working – treating – or inspecting... – Means to convey a palleted load back and forth between an...
Patent
1993-06-11
1994-11-29
Valenza, Joseph E.
Conveyors: power-driven
With means to facilitate working, treating, or inspecting...
Means to convey a palleted load back and forth between an...
198378, 29 33P, B65G 3700
Patent
active
053681509
ABSTRACT:
A pallet exchange apparatus has a bed and an arm assembly supported on the bed to be rotatable between a workpiece loading-and-unloading station and workpiece machining station. A pair of cylindrical holes are formed at both ends of the arm assembly for receiving the pallets. The apparatus is further provided with driving means for rotating the arm assembly, a turntable rotatably mounted on the bed at a position corresponding to the workpiece machining station, first engagement portions formed at the ends of the arm assembly, second engagement portions formed on the pallets so as to be engaged with the first engagement portions for preventing the rotation of the pallets, and a moving device disposed on the turntable for moving the pallet located at the workpiece machining station in the vertical direction. When the pallet is lowered by the moving device, the pallet is separated from the turntable and the second engagement portion of the pallet is engaged with the first engagement portion. When the pallet is raised, the pallet is thrust against the turntable and the second engagement portion is disengaged from the second engagement portion.
REFERENCES:
patent: 1833417 (1931-11-01), Drake
patent: 4318465 (1982-03-01), Calvert et al.
patent: 4564101 (1986-01-01), Nagel
patent: 4797052 (1989-01-01), Ohta et al.
patent: 4934031 (1990-06-01), Maeda et al.
patent: 5099980 (1992-03-01), Babel
Hattori Yasuhiro
Hirano Hidekazu
Hoshino Yukio
Okada Yasuhiro
Toyoda Koki Kabushiki Kaisha
Valenza Joseph E.
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