| 摘要 |
An assembly and method of operation of forming hollow foundry products such as shell molds from a granular material utilizing a substantially automated structure including a mold box assembly having at least two box sections pivotally mounted and supported on a frame wherein each box section has a gas permeable pattern with a preconfigured working surface mounted therein. Each box section is oriented to pivot about a vertically oriented separating plane into and out of sealing engagement with one another so as to expose the interior of the mold box assembly to a catalyst gas, under pressure and in direct communication through the pattern sections with the binder coated sand or granular material in a manner which will cause formation of a core or mold of a predetermined thickness which, during its formation, is disposed directly contiguous the working surface of the pattern section. Automatic removal of the formed product is accomplished upon separation of the box sections away from the vertically oriented separating plane substantially concurrently to removal, and transfer of the unused granular material for reuse during subsequent cycles of operation of the subject structure.
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