Mold for molding hollow bricks by means of a press

Details Mold for molding hollow bricks by means of a press Mold for molding hollow bricks by means of a press

1979-07-02

1981-06-02

Parrish, John

Plastic article or earthenware shaping or treating: apparatus

Press forming apparatus having opposed press members

Male shaping member and female mold

B29C 300

Patent

active

042708931

ABSTRACT:
Mold for molding hollow bricks by means of a press, comprises at least one punch affixed to the movable crosspiece of the press. A die is provided with at least one cavity for containing the material to be pressed and is engageable by the punch during the pressing step. At least one counterpunch constitutes the bottom of the die cavity and is movable between a position where it rests on the press base and a position where it ejects the molded brick. The die is supported in a yielding manner vertically with respect to the press base. Rod-like elements adapted for forming the holes through the bricks are rigid with the die. The rod-like elements penetrate the counterpunch and the cavity and are further adapted for inserting themselves in respective seats in the punches during the pressing step.

REFERENCES:
patent: 2209404 (1940-07-01), Lassman
patent: 3041701 (1962-07-01), Gates
patent: 3775032 (1973-11-01), Smith et al.
patent: 3802818 (1974-04-01), Watanabe
patent: 4128376 (1978-12-01), Albertazzi

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