Apparatus for forming the edge of containers of synthetic thermo

Details Apparatus for forming the edge of containers of synthetic thermo Apparatus for forming the edge of containers of synthetic thermo

1990-10-17

1992-06-02

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

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

Including both heating and cooling means

425397, 425398, 4254031, 425423, B29C 5300

Patent

active

051182777

ABSTRACT:
An apparatus for forming the edge of containers of synthetic thermoplastic material which are open at the top and terminate in an outer flange which is arched upwards from the top and then extends downwards. The apparatus includes an edge moulding unit having four groups of three female moulds and the same number of male moulds, a rotating plate for the female moulds designed to rotate step-by-step to cyclically carry each group of moulds from a charging position, through a moulding position to a discharge position and a cooling position. A feed device having one or more groups of parallel heated screw-threaded rotating rollers are provided, each engaging a portion of the flanges of a sequence of containers in order to heat them and transfer the same from a stock of containers to the charging position. Compressed-air-nozzles are arranged to cause the container to move from the feed device to a female mould.

REFERENCES:
patent: 3183291 (1965-05-01), Miller et al.
patent: 3271503 (1966-09-01), Shelby
patent: 3339005 (1967-08-01), Brown et al.
patent: 3358331 (1967-12-01), Weber
patent: 3548457 (1970-12-01), Kulig
patent: 3579737 (1971-05-01), Gerber
patent: 3632274 (1972-11-01), Gillespie
patent: 3914102 (1975-10-01), Brown
patent: 3920373 (1975-11-01), Brown
patent: 4132319 (1979-01-01), Padovani
patent: 4391768 (1983-07-01), Arends et al.

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