Vacuum forming machine

Details Vacuum forming machine Vacuum forming machine

1980-02-26

1981-02-24

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Including shaping means comprising fluid pressure contacting...

425398, 425DIG48, B29C 1703

Patent

active

042525187

ABSTRACT:
A vacuum forming machine has a machine frame and a forming station which includes a tensioning device for clamping a thermoplastic sheet blank to be deformed into an article, a bridge and a positive mold carried thereby. The bridge is vertically displaceable together with the positive mold between an inoperative position in which the positive mold is spaced from a location where the blank is clamped by the tensioning device and an operative position in which the positive mold is in an operative, contacting relationship with the blank. The positive mold is vertically displaceable with respect to the bridge between the operative position and a transfer position in which the article formed on the positive mold is transferred therefrom.

REFERENCES:
patent: 1671577 (1928-05-01), Gluckin et al.
patent: 3341893 (1967-09-01), Edwards
patent: 3461504 (1969-08-01), Becker et al.
patent: 3465071 (1969-09-01), Edwards
patent: 3837782 (1974-09-01), Meissner et al.
patent: 3880561 (1975-04-01), Terro
patent: 3964237 (1976-06-01), Johansen
patent: 4008029 (1977-02-01), Shokite
patent: 4137030 (1979-01-01), Sanson

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