Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including shaping means comprising fluid pressure contacting...
Patent
1995-10-19
1998-02-24
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including shaping means comprising fluid pressure contacting...
4254031, 425437, 425DIG60, B29C 5110
Patent
active
057209928
ABSTRACT:
A thermoforming apparatus having a plurality of dies for forming a plurality of thin walled plastic articles in combination with an improved movable extractor plate assembly for moving an extractor plate between the plurality of dies of the thermoforming apparatus to remove formed articles is described. The movable extractor plate assembly includes an extractor plate having a vacuum chamber connected to the outlet end of a vacuum source and having at the inlet end of the vacuum source a pressure control valve and a vent valve between the vacuum source and pressure control valve. The assembly permits the control of pressure to the vacuum chamber to provide holding contact of articles formed onto the extractor plate without deformation of the thin walled articles. Additionally, the assembly permits the injection of air pressure into the vacuum chamber upon closing of the vacuum source to facilitate release of the formed articles from the extractor plate.
REFERENCES:
patent: 3161915 (1964-12-01), Thiel
patent: 3773457 (1973-11-01), Badoux et al.
patent: 3867088 (1975-02-01), Brown et al.
patent: 4560339 (1985-12-01), Padovani
patent: 4872826 (1989-10-01), Padovani
patent: 5308237 (1994-05-01), Kieran
patent: 5453237 (1995-09-01), Padovani
patent: 5591463 (1997-01-01), Padovani
Schwartz Iurie A.
Trafalgar House Company
Woo Jay H.
LandOfFree
Movable extractor plate assembly for rapidly removing articles f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Movable extractor plate assembly for rapidly removing articles f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Movable extractor plate assembly for rapidly removing articles f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1873759