Mold molding apparatus, mold quality evaluation apparatus, and mold quality evaluation method

Abstract

A casting mold molding device, a casting mold quality evaluation device, and a casting mold quality evaluation method that are capable of evaluating the quality of a molded green sand mold without measuring a green sand mold by using a casting mold strength gauge each time a green sand mold is molded in one flask. The device includes a green sand mold molding sensor that, during molding of a green sand mold, measures a pressure value applied to a joining section between green sand introduced into a casting mold molding space and a squeeze board or squeeze feet; and a casting mold quality evaluation device that evaluates the quality of a molded green sand mold from the pressure value.

1 . A casting mold molding device comprising:
 a green sand mold molding sensor that, during molding of a green sand mold, measures a pressure value applied to a contact section between a squeeze board or squeeze feet and green sand introduced into a casting mold molding space; and   a casting mold quality evaluation device that evaluates the quality of a molded green sand mold from the pressure value.   
     
     
         2 . The casting mold molding device according to  claim 1 , wherein the casting mold quality evaluation device comprises a casting mold strength calculation unit that calculates the casting mold strength of a green sand mold from the pressure value on the basis of a relationship between the pressure value and the casting mold strength of a green sand mold for which the pressure value was measured. 
     
     
         3 . The casting mold molding device according to  claim 2 , wherein the casting mold quality evaluation device comprises a casting mold quality determination unit that determines the quality of the molded green sand mold from the calculated casting mold strength on the basis of a predetermined threshold value. 
     
     
         4 . The casting mold molding device according to  claim 2 , wherein the casting mold strength calculation unit calculates the casting mold strength of a green sand mold for which the casting mold strength has not been measured. 
     
     
         5 . The casting mold molding device according to  claim 2 , wherein the casting mold quality evaluation device further comprises a display means that displays the relationship, calculated by the casting mold strength calculation unit, between the pressure value and the casting mold strength of a green sand mold for which the pressure value was measured. 
     
     
         6 . The casting mold molding device according to  claim 1 , wherein the casting mold quality evaluation device further comprises a recording means that records pressure value data, casting mold strength data associated with pressure values, calculation results of casting mold strength, and determination results of casting mold quality which were produced during molding of the green sand mold. 
     
     
         7 . The casting mold molding device according to  claim 1 , wherein transmission of a pressure value from the green sand mold molding sensor to the casting mold quality evaluation device is carried out via wireless communication. 
     
     
         8 . The casting mold molding device according to  claim 1 , wherein the casting mold molding device is a flaskless molding machine or a flask molding machine. 
     
     
         9 . The casting mold molding device according to  claim 1 , wherein the squeeze board is configured to be rectangular, an arrangement of the squeeze feet is configured to be rectangular, a plurality of the green sand mold molding sensors are provided, and these pressure sensors are embedded in the four corners of the squeeze board or in the squeeze feet at the four corners. 
     
     
         10 . A casting mold quality evaluation device, which evaluates, during molding of a green sand mold, the quality of a molded green sand mold from a pressure value applied to a contact section between a squeeze board or squeeze feet and green sand introduced into a casting mold molding space. 
     
     
         11 . The casting mold quality evaluation device according to  claim 10 , comprising a casting mold strength calculation unit that calculates the casting mold strength of a green sand mold from the pressure value on the basis of a relationship between the pressure value and the casting mold strength of a green sand mold for which the pressure value was measured. 
     
     
         12 . The casting mold quality evaluation device according to  claim 11 , comprising a casting mold quality determination unit that determines the quality of a molded green sand mold from the calculated casting mold strength on the basis of a predetermined threshold value. 
     
     
         13 . A casting mold quality evaluation method, comprising:
 measuring, during molding of a green sand mold, a pressure value applied to a contact section between a squeeze board or squeeze feet and green sand introduced into a casting mold molding space; and   evaluating the quality of a molded green sand mold from the pressure value.   
     
     
         14 . The casting mold quality evaluation method according to  claim 13 , wherein the evaluating the quality of a green sand mold comprises calculating the casting mold strength of a green sand mold from the pressure value on the basis of a relationship between the pressure value and the casting mold strength of a green sand mold for which the pressure value was measured. 
     
     
         15 . The casting mold quality evaluation method according to  claim 14 , wherein the evaluating the quality of a green sand mold comprises determining the quality of a molded green sand mold from the calculated casting mold strength on the basis of a predetermined threshold value.