Rotary vacuum blow-molding machine

Details Rotary vacuum blow-molding machine Rotary vacuum blow-molding machine

1986-11-03

1988-03-15

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Plural female molds and means to shape parison at each...

425388, 4254051, B29C 5110, B29C 5136

Patent

active

047310120

ABSTRACT:
A continuous molding machine comprises a rotatable wheel that carries a plurality of fixed dies, each of which is aligned with an axially movable die within a peripheral surface to form pairs of molding dies. A strip of uncured material is movable between each pair of molding dies at a molding station. As the wheel rotates each pair of molding dies through a molding station, the molding dies are closed upon the uncured material to form a molded article. A shoe is fixedly-mounted adjacent the molding station and is slidable with respect to the peripheral surface of the rotating wheel to communicate with passages which lead from the peripheral surface of the rotating wheel to the insides of the molding dies. During die closing, vacuum is applied to the shoe to remove air from the molding dies.

REFERENCES:
patent: 2943354 (1960-07-01), Gora
patent: 3008181 (1961-11-01), Fitz et al.
patent: 3079633 (1963-03-01), Fitz
patent: 3280431 (1966-10-01), Fitz
patent: 3640666 (1972-02-01), Jope et al.
patent: 3651190 (1972-03-01), Fitz
patent: 4605368 (1986-08-01), Helmer et al.

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