Clamping mechanism in an injection molding machine
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United States of America Patent
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-
Jan 1, 1991
Grant Date -
N/A
app pub date -
Oct 27, 1988
filing date -
Feb 27, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A clamping mechanism which includes a cylinder and a piston. The diameter of the piston is less than the internal diameter of a rear chamber of the cylinder such that fluid flows around the piston when the piston moves from an open position to an intermediate position. The diameter of the piston is equal to the internal diameter of a front chamber of the piston such that fluid cannot flow around the piston when the piston moves from the intermediate position to a closed position. To prevent cavitation within the cylinder, fluid is charged to the cylinder in accordance with the movement of the piston.
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