Patent ID: 7654302
Filing Date: 2010-02-02
Classification: B22C

Abstract:
1. A method for molding an upper and a lower mold having no flask by using two pairs of an upper and a lower flask, which are horizontal and have intakes for foundry sand and of which each pair can alternately and intermittently rotate comprising: (1) a putting and holding process to put a match plate having a pattern in between an upper and a lower flask of one pair of two pairs of an upper and lower flask having intakes for foundry sand and being horizontal and to hold the match plate, (2) a defining process to define an upper and a lower molding space by inserting an upper and a lower squeeze means into openings of the pair of the upper and the lower flask having no match plate, (3) a rotating and moving process to rotate the pair of the upper and the lower flask and the match plate together with the upper and the lower squeeze means and cylinders to move the upper and lower squeeze means so that they are perpendicularly positioned, and to move them so that the intakes of the upper and the lower flask move upward, (4) a filling process to fill the upper and the lower molding space with the foundry sand through the intakes of the upper and the lower flask, (5) a squeezing process to squeeze the foundry sand in the upper and the lower molding space by causing the upper and the lower squeeze means to further approach each other, (6) a rotating process to rotate the pair of the upper and the lower flask and the match plate together with the upper and the lower squeeze means and cylinders to move the upper and lower squeeze means so that they are again horizontally positioned, (7) a removing process to remove the match plate disposed between the upper and the lower flask after separating the upper and the lower flask containing respectively an upper and a lower mold from the match plate, (8) a rotating process to alternately and intermittently rotate the pair of the upper and the lower flask containing the molds and the other pair of the upper and the lower flask from which molds made in a preceding process have been removed, (9) a matching process to match the upper and the lower flask containing the upper and the lower mold to each other, and (10) a removing process to remove the molds from the pair of the upper and the lower flask that are caused to match each other.