Dual core forming machine

Abstract

A machine for production of cores for use in castings includes a platform for supporting two core boxes and a split filler head having dual discharge channels for simultaneously injecting core sand into two core boxes and for simultaneously applying curing gas to core sand injected the two into core boxes.

1 . A core forming machine for simultaneously forming a plurality of cores for use in a casting process, the core forming machine comprising: 
 a core box support platform having an upper surface and having a center position and first and second opposite ends;    a first pressure application unit disposed adjacent the first opposite end;    a second pressure application unit disposed adjacent the second opposite end;    a first core box for forming a first core and disposed adjacent the first pressure application unit;    a second core box for forming a second core and disposed adjacent the second pressure application unit;    said pressure application units operable to apply forces to the first and second core boxes for urging the first and second core boxes toward each other.    
     
     
         2 . The core forming machine in accordance with  claim 1  wherein the first and second core boxes each comprise an upper surface and a filler opening in each upper surface and wherein the core forming machine further comprises a sand magazine movable to a position adjacent the first and the second core boxes for simultaneously depositing core sand in the first and second core boxes.  
     
     
         3 . The core forming machine in accordance with  claim 2  and further comprising a split filler head disposed between the sand magazine and the first and second core boxes, the filler head having a first discharge channel for depositing core sand in the filler opening of the first core box and a second discharge channel for depositing core sand in the filler opening of the second core box.  
     
     
         4 . The core forming machine in accordance with  claim 1  wherein the first and second core boxes each comprise an upper surface and a filler opening in each upper surface and wherein the core forming machine further comprises a gas magazine movable to a position adjacent the core boxes for simultaneously injecting a curing gas in the first and second core boxes.  
     
     
         5 . The core forming machine in accordance with  claim 4  and further comprising a split filler head disposed between the gas magazine and the first and second core boxes, the split filler head having a first discharge channel for directing a curing gas into the filler opening of the first core box and a second discharge channel for directing a curing gas into the filler opening of the second core box.  
     
     
         6 . The core box forming machine in accordance with  claim 1  and further comprising an upstanding post disposed between the first the second core boxes.  
     
     
         7 . The core box forming machine in accordance with  claim 6  wherein the upstanding post is mounted to the support platform.  
     
     
         8 . The core box forming machine in accordance with  claim 3  and further comprising an upstanding post disposed between the first and the second core boxes.  
     
     
         9 . The core box forming machine in accordance with  claim 8  wherein the upstanding post is mounted to the support platform.