Apparatus for vacuum forming synthetic resin products

Details Apparatus for vacuum forming synthetic resin products Apparatus for vacuum forming synthetic resin products

1997-07-02

2000-05-02

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Serially arranged with preform reshaping means

425388, 264554, 264154, 264155, 264163, B29C 5132

Patent

active

060565314

ABSTRACT:
A vacuum forming apparatus has a first mold and a second mold, the first mold including a forming surface. The first mold has a hollow space defined therein and communicating with the forming surface through holes defined in the first mold. The hollow space is connected to a vacuum pump for developing a vacuum in the hollow space to attract a sheet against the forming surface through the holes. The second mold has a presser including a cylinder which displaces a cutter having a serrated trimming blade of the second mold. The presser has an upper groove which accommodates teeth of the serrated trimming blade. The first mold has a lower groove for receiving the teeth of the serrated trimming blade when it is displaced downwardly by the cylinder.

REFERENCES:
patent: 3802308 (1974-04-01), Davis, Jr.
patent: 4104349 (1978-08-01), Hillgenberg
patent: 4243456 (1981-01-01), Cesano
patent: 5188787 (1993-02-01), King et al.
patent: 5393474 (1995-02-01), Souders

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