Metal founding – Including means to directly apply magnetic force to work or...
Patent
1978-10-27
1980-04-22
Baldwin, Robert D.
Metal founding
Including means to directly apply magnetic force to work or...
164213, 164241, B22C 704
Patent
active
041990200
ABSTRACT:
Mold forming apparatus including a pattern device which is composed of pattern plates adapted to be operatively fitted into a pattern plate carrier is operated with the pattern device shifted between a lifting station, at which a formed mold may be removed from the patterns of the pattern plates, and an exchange station where the pattern plates may be separated from the pattern plate carrier for appropriate treatment thereof. The pattern plate carrier is formed in a generally box-like configuration with a bottom member having openings extending therethrough through which extraction pins of a lifting device may extend in order to raise and lower the pattern plates from the pattern plate carrier at the exchange station. A vacuum system is provided which will tend to hold the pattern plate carrier upon a bearing member of the apparatus and which will also tend to hold the pattern plate upon the pattern plate carrier while the finished mold is removed therefrom. An additional compressed air system operates to introduce air at the interface between the molds and the pattern plates in order to facilitate the separation thereof.
REFERENCES:
patent: 195070 (1877-09-01), Aikin et al.
patent: 2672664 (1954-03-01), Sudziarski
patent: 3587144 (1971-06-01), Mechling
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