Clamping structure and method for clamping the mold unit of a mo

Details Clamping structure and method for clamping the mold unit of a mo Clamping structure and method for clamping the mold unit of a mo

1985-02-19

1986-09-23

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

2643288, 26432811, 425574, 425576, 425589, 4254519, B29C 4506, B29C 4577

Patent

active

046134751

ABSTRACT:
A method and apparatus for reducing the ram pressure normally required to seal the mold of an injection mold apparatus. A movable mold section is rigidly secured to a flat plate-like carriage member mounted for reciprocal movement relative to a stationary mold section. A plate unit is supported between the carriage member and the ram in a floating and axially aligned relation, with the movable mold section located within the perimetric confines of the carriage member and the plate unit. On linear extension of the ram to initially abutingly engage the plate unit and carriage member the movable mold section is moved into engagement with the stationary mold section whereby the ram clamping force is distributed uniformly in a pyramidal pattern from the ram to the perimetric portions of the mold sections to seal the mold.

REFERENCES:
patent: 3986805 (1976-10-01), Haines
patent: 4238181 (1980-12-01), Dannels et al.

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