Workpiece transfer hand
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United States of America Patent
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Oct 22, 2024
Grant Date -
N/A
app pub date -
Dec 14, 2021
filing date -
Dec 21, 2020
priority date (Note) -
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Abstract
A workpiece transfer hand includes a support plate and a suction unit on the upper surface of the plate. The upper surface of the plate has a recess whose bottom is formed with first and second pressure ports. The suction unit includes an elevator, elastic member, and first/second cylindrical members. The elevator, vertically movable in the recess along a stroke, has a vertical suction hole. The elastic member biases the elevator upward or downward. The first cylindrical member expands and contracts vertically, with its upper end connected to the elevator to surround the suction hole and its lower end connected to the bottom of the recess to surround the first pressure port. The second cylindrical member expands and contracts vertically, with its upper end connected to the elevator and its lower end connected to the bottom of the recess to surround the second pressure port.
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