Patent ID: 7806161
Filing Date: 2010-10-05
Classification: B22C,B22D

Abstract:
1. A process for making sand molds, placing the molds in a mold string, double indexing the molds and pouring two castings simultaneously using a sand molding machine, the process comprising: providing a first mold by blowing sand into a mold chamber and squeezing the sand with a lateral squeeze head and a swingable squeeze head; pushing the first mold to an end of a mold string using the lateral squeeze head; providing a second mold by placing sand into a mold chamber and squeezing the sand with a lateral squeeze head and a swingable squeeze head; pushing the second mold adjacent to the first mold at the end of the mold string using the lateral squeeze head; indexing the first mold and second mold a distance of two mold widths using the lateral squeeze head in a single stroke, a mold retention device, a mold hold down and a mold string conveyor; and pouring molten metal into two mold cavities that are at least partially within the first and second mold while two additional molds are being made and pushed to the end of the mold string.