Importance

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Abstract

The invention provides a compact and easily movable workpiece stacking apparatus which uses only an electric source as a power source. A workpiece stacking apparatus includes lift bars on which workpieces are stackable and a lift bar drive apparatus which drives the lift bars in the upward and downward directions. The lift bar drive apparatus includes a support pillar which guides the lift bars in the upward and downward directions, a first sprocket, a second sprocket disposed below the first sprocket and guided movably in the upward and downward directions, a roller chain of which one end is fixed to the lift bars and extended from the lift bars to be engaged with the teeth of the first and second sprockets and the other end is fixed so as to hang the second sprocket, and an electric motor which drives and rotates the first sprocket.

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First Claim