Apparatus for opening and closing mold halves

Details Apparatus for opening and closing mold halves Apparatus for opening and closing mold halves

1988-09-01

1989-04-18

Chiesa, Richard L.

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...

74 99A, 74107, 264535, 264538, 425534, 425540, 425541, B29C 4956

Patent

active

048222755

ABSTRACT:
An arrangement for opening and closing mold halves of a blow mold is disclosed. The blow mold generally forms part of a stretching and blowing machine for blow-molding hollow bodies from thermoplastic plastics materials.
The mold halves are coupled to driven rocker arms, which are driven by driving rocker arms of a four-link gear, the pivot of the four-link gear being disposed immediately at the end of the common pivotal axis of the mold halves.
The driving rocker arm of the four-link gear is formed by cylinders, which are provided with cam tracks on their external curved surfaces in which rollers mounted on a sliding cam controller travel.

REFERENCES:
patent: 2715751 (1955-08-01), Weber
patent: 2989198 (1961-06-01), Bradley
patent: 3059482 (1962-10-01), Petzoldt
patent: 3596315 (1971-08-01), Yoshikawa et al.
patent: 4036925 (1977-07-01), Kauffman et al.
patent: 4140468 (1979-02-01), Duga
patent: 4350322 (1982-09-01), Mueller
patent: 4593573 (1986-06-01), Bond

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