Molding tool

Details Molding tool Molding tool

1982-02-11

1983-05-17

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...

425388, 425405R, 425398, B29C 1700

Patent

active

043838154

ABSTRACT:
A molding tool for making articles by deep-drawing a heated thermoplastic foil includes a matrix having an inner wall face defining an opening, a mold defining a mold cavity aligned with the opening, and a depressor movably received in the opening of the matrix for clamping marginal portions of the foil during molding operation. A heat conducting sleeve is immobilized in the opening and surrounds the depressor. The outer face of the sleeve and portions of the inner wall face of the matrix define an annular chamber which surrounds the sleeve. A seal is provided between the matrix and the sleeve for rendering the annular chamber fluid tight. Channels are provided in the matrix for introducing a coolant into the annular chamber.

REFERENCES:
patent: 3173174 (1965-03-01), Edwards
patent: 3261055 (1966-07-01), Dart
patent: 3268960 (1966-08-01), Morton
patent: 3427687 (1969-02-01), Miller
patent: 3800682 (1974-04-01), Gournelle
patent: 4105736 (1978-08-01), Podovani

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