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US 3,981,671 AGranted
Liquid reaction molding press
AssigneeCincinnati Milacron Inc.
InventorBobbie Lee Edwards
Life of this patent
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AssigneeCincinnati Milacron Inc.
InventorBobbie Lee Edwards
Estimating the term…
A clamp for holding together the portions of a mold used in molding solid objects from a reacting liquid such as polyurethane has a C-shaped frame which is pivotally mounted on a pedestal to swing through an arc. The C-shaped frame of the clamp consists of an integral structure having an upper jaw connected by a column to a lower jaw. The frame supports a bed, crown and platen. The bed and crown are each a plate-like member that is mounted to pivot relative to one of the jaws. The platen is mounted preferably on the bed or lower one of such members. The mold portions are mounted on the crown and platen with the parts being arranged to move so that the mold portion engage and disengage. The invention also includes a method of molding wherein the mold portions are engaged and disengaged by a process that involves pivoting at least one and preferably both of the portions relative to the C-shaped frame.
A clamp for mounting mating parts of a mold in the mold cavity of which may be reacted an organic liquid molding to form a solid molded object comprising:
A clamp according to claaim 10, wherein second power means for reciprocating includes a hydraulic piston and cylinder secured to said bed with the platen moving portion being secured to said platen.
Dependencies are inferred from the claim text.