Patent ID: 7007738
Filing Date: 2006-03-07
Classification: B22C,B22D

Abstract:
1. Vertical shell molding machine, of the type including a molding chamber fed by the corresponding sand hopper and closed by a displaceable and swiveling front plate and by a rear plate provided on the end of an extraction piston, that compact the sand by applying opposing pressures, cyclically producing shells forming two half-molds that are placed on a baseplate and then, with the aid of the extraction piston, are, placed against each other and aligned to form a row of shells on a shell conveyor system, determining molds that move along the various working stations of the installation, characterized in that the shell is carried by the piston to an intermediate station interlinked with the shell conveyor system, the shell is deposited and placed against the last shell of the row such that the displacement of the row of shells is not performed by pushing the last shell expelled by the extraction piston against the previously obtained shells, and the shell is carried with the other shells step by step by the conveyor system, with a complete independence of the movement of the shell pushed by the piston and the movement of said shell after it is incorporated into the row of shells, said intermediate station being defined by protrusions of the baseplate, defining a comb-like structure, which when the shell is removed by the conveyor system are interlinked with the rails of a loping transport train, which rails are provided with an upward/downward and a forward/backward motion, and with which collaborate other rails that can only move in an upward/downward sense which move synchronically in each cycle to collect the shell, advance it one step and support the row formed.