Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including shaping means comprising fluid pressure contacting...
Patent
1976-01-22
1976-11-30
Husar, Francis S.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including shaping means comprising fluid pressure contacting...
425DIG208, 425DIG213, 425DIG232, B29C 1700, B29D 2303
Patent
active
039946550
ABSTRACT:
A molding machine into which nested stacks of preforms or parisons at ambient temperatures are loaded, which denests and applies the preforms individually onto complementary shaped mandrels in the machine. The preforms are made of a thermoplastic material, such as polystyrene, and the mandrels of the molding machine are internally heated to heat each parison as the machine is intermittently rotated. The mandrels are circumferentially mounted about a carriage in the machine and the carriage rotates about a horizontal axis. When viewing the machine at the side at which the carriage rotates in a counterclockwise direction, the preforms are individually applied to the mandrels at the 3 o'clock position by a loading mechanism. From the 3 o'clock position around and to the 6 o'clock position each preform is being heated on its mandrel. At the 70'clock position a split mold closes about the preform and air under pressure is directed through the mandrel to cause the heated preform to expand to the mold configuration and be cooled upon engagement with the mold walls. A pick-off mechanism at the 4 o'clock position removes the finished reformed article from each mandrel and releases the finished article from the machine to container filling lines.
REFERENCES:
patent: 3058150 (1962-10-01), Makowski
patent: 3680763 (1972-08-01), Ludder
patent: 3737275 (1973-06-01), Kontz
patent: 3770860 (1973-04-01), Amberg et al.
patent: 3773457 (1973-11-01), Badoux et al.
Baer Martin A.
Diener Walter C.
Edwards Bryant
Jorgensen Arne R.
Beart R. W.
Benno E. L.
Hampilos Gus T.
Husar Francis S.
Illinois Tool Works Inc.
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