Plastic article or earthenware shaping or treating: apparatus – Mold opening and closing means and segmented female mold
Patent
1978-10-18
1981-06-16
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Mold opening and closing means and segmented female mold
4254512, 4254515, 4254519, 425589, 425590, 425593, 425595, 425DIG223, 425DIG221, B29F 100
Patent
active
042735246
ABSTRACT:
In a molding press having fixed and movable platens for mounting mold halves, the movable platen is connected through thrust rods and a thrust plate to the movable component of an hydraulic piston-cylinder platen drive unit the fixed component of which is attached to a fixed base. A high pressure piston-cylinder mold clamping unit of the pancake type interengages the movable platen and a pancake cylinder support plate mounted for movement along the thrust rods and arranged for abutment by the thrust plate. The pancake cylinder support plate and fixed base are joined together by toggle joints operated by a piston-cylinder locking unit supported pivotally on arms extending pivotally from the pancake cylinder support plate and fixed base. The drive unit thus is arranged in parallel with the series arrangement of the toggle joints and mold clamping unit.
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Flint, Jr. J. Howard
Hull Corporation
Olson Oliver D.
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