Injection molding apparatus and injection molding method

Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under...

Reexamination Certificate

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Details

C425S450100, C425S412000, C425S441000, C425S542000, C425S405100, C425SDIG053, C425SDIG024, C425SDIG024

Reexamination Certificate

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07104781

ABSTRACT:
An injection molding apparatus has a die having a fixed mold and a moveable mold disposed to face with each other. A frame structure is detachably provided on the outer surfaces of the fixed mold and the moveable mold, that is, opposite to the surface of the cavity defined by the fixed mold and the moveable mold. Each frame that constitutes the frame structure has a shape that can be combined together. One of frames provided on the fixed mold or the moveable mold is fixed thereto in a die clamping direction or a direction perpendicular thereto. The frame is fixed to the fixed mold of the die, leaving a predetermined gap in the direction perpendicular to that for fixing the frame structure to the die. The pressurizing mechanism that applies a pressing force in the direction other than for fixing the frame structure to the die. The hydraulic control mechanism is employed as the pressurizing mechanism.

REFERENCES:
patent: 5252269 (1993-10-01), Hara et al.
patent: 5281376 (1994-01-01), Hara et al.
patent: 5700415 (1997-12-01), Hiroki et al.
patent: 5980809 (1999-11-01), Crain et al.
patent: 6416315 (2002-07-01), Ciccone
patent: B-6-28886 (1994-04-01), None
patent: B-6-67582 (1994-08-01), None

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