Plastic article or earthenware shaping or treating: apparatus – Female mold including tamping means or means utilizing mold... – Including means imparting diverse motion
Patent
1974-01-24
1976-02-17
Shore, Ronald J.
Plastic article or earthenware shaping or treating: apparatus
Female mold including tamping means or means utilizing mold...
Including means imparting diverse motion
425435, B29C 504
Patent
active
039389286
ABSTRACT:
A rotary casting apparatus for molding hollow articles of synthetic plastic is described employing a plurality of hollow molds which are heated and rotated within a fixed oven. The molds and molded articles therein are cooled rapidly while they remain within the oven by injecting cool, moist air into such oven from an external blower fan and a sprayer which sprays water into the air inlet of such fan. Improved rotation and support means are provided for the molds, including a common tubular drive shaft which rotates all of the molds about a common axis and a plurality of rotor means for rotating each of the molds about another axis perpendicular to such common axis. The rotor means are coupled by bevel gears to a second drive shaft extending through the common drive shaft. Each of the molds is rotationally mounted on bearings which are supported on the common drive shaft. The bearings at the inner ends of the molds each include a tubular fixed shaft about which the mold is rotated by the rotor means and which also vents gas from such mold. A scraper ring of low adhesion material is attached to the fixed bearing shaft within each mold and spaced a predetermined distance from its inner surface to provide the molded article with a mounting flange portion of predetermined thickness and inner diameter.
REFERENCES:
patent: 3095260 (1963-06-01), Ferriot
patent: 3112529 (1963-12-01), Chupa
patent: 3233287 (1966-02-01), Blue et al.
patent: 3350745 (1967-11-01), Schott et al.
patent: 3796533 (1974-03-01), Vox
patent: 3810727 (1974-05-01), Pivar
patent: 3892272 (1974-07-01), Carillon et al.
Charvat R. J.
Shore Ronald J.
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