Foundry sand molding apparatus

摘要

Foundry sand molding apparatus includes a head and table between which sand molds are squeezed. The head is rotatably indexable about a horizontal axis above the table, and carries different cope and drag squeeze boards selectively alignable with the table for producing different cope and drag sand molds on the same apparatus. The head has a sand supply passage therethrough and is rotatably indexable to a sand supply position with the passage vertically aligned with the table for supplying sand therethrough to a flask supported on the table. The head is rotatable in either of opposite directions from its sand supply position for selectively aligning either the cope or drag squeeze board with the table. Baffles extending across the sand supply passage perpendicular to one another are individually adjustable for adjusting the distribution of sand supplied through the passage. Pneumatically operated vibrators are associated with each squeeze board, and position responsive valve means is responsive to the position of the head for supplying air only to the vibrator associated with the squeeze board aligned with the table.