Apparatus for manufacturing mold parts

Details Apparatus for manufacturing mold parts Apparatus for manufacturing mold parts

1979-09-17

1981-03-10

Baldwin, Robert D.

Metal founding

Means to shape a forming surface

Including means for compacting particulate fluent mold...

164212, B22C 1508

Patent

active

042548160

ABSTRACT:
An apparatus for fabricating boxless casting mold parts. During a first step the sand is pre-compacted in mold boxes or flasks by means of a pressure or compaction plate of a pressure or compaction device to form a casting mold part. Press or pressure punches are displaceably mounted in the pressure plate. By means of a pressurized fluid medium, introduced into a hollow chamber or space of the pressure or compaction device, the press or pressure punches are activated and, during a second step, cause a post-compaction of the casting mold part. There is thus produced an approximately uniform compaction of the casting mold part. The lower part of the pressure or compaction device is structured as the pressure or compaction plate serving for pre-compaction. This compaction plate is provided with recesses which receive the press punches which are arranged in spaced relationship from one another such that, after the compaction operation, there is formed a coherent ejection and standing or support surface of the mold part which is interrupted by recesses or depressions.

REFERENCES:
patent: 356856 (1887-02-01), Tasker
patent: 1846306 (1932-02-01), Bunting et al.

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