Article For Multiple Core Stacking And Method Thereof

Abstract

Disclosed is a mold for casting multiple castings in sand including a flaskless mold and a core assembly. The core assembly is within the flaskless mold with the sand surrounding the core assembly. The core assembly can have a central axis, a plurality of window cores and at least two splitter cores. The plurality of window cores and the at least two splitter cores are alternately stacked to form a plurality of casting cavities along the central axis. In some instances, two of the plurality of window cores are mirror-image oriented with respect to each other along the central axis and two of the plurality of window cores are oriented the same with respect to each other along the central axis. At least one of the at least two splitter cores can be a thin splitter core that separates two casting cavities that are spaced apart and mirror-image oriented with respect to each other and one of the at least two splitter cores can be a thick splitter core that separates two casting cavities that are spaced apart from and oriented the same with respect to each other along the central axis.

1 . A mold for forming multiple castings in sand, said mold comprising:
 a mold made from sand;   a core assembly positioned in said sand, said core assembly having:
 a central axis; and 
 a plurality of cores stacked to form a plurality of casting cavities along said central axis. 
   
   
   
       2 . The mold of  claim 1 , wherein said plurality of cores is a plurality of a first set of cores and a plurality of a second set of cores. 
   
   
       3 . The mold of  claim 2 , wherein said plurality of said first set of cores and said plurality of said second set of cores are alternately stacked to form said plurality of casting cavities along said central axis. 
   
   
       4 . The mold of  claim 3 , wherein two of said plurality of said first set of cores are mirror-image oriented to each other along said central axis. 
   
   
       5 . The mold of  claim 3 , wherein two of said plurality of said first set of cores are oriented the same to each other along said central axis. 
   
   
       6 . The mold of  claim 3 , wherein all of said plurality of said first set of cores are spaced apart and oriented the same to each other along said central axis. 
   
   
       7 . The mold of  claim 3 , wherein all of said plurality of said second set of cores are spaced apart and oriented the same to each other along said central axis. 
   
   
       8 . The mold of  claim 7 , wherein said plurality of said second set of cores each separate two casting cavities spaced apart from and oriented the same to each other along said central axis. 
   
   
       9 . The mold of  claim 8 , wherein an outer surface of said plurality of said first set cores and said plurality of said second set of cores forms a continuous draft line on said core assembly. 
   
   
       10 . The mold of  claim 3 , wherein at least one of said plurality of said second set of cores is a thin splitter core separating two casting cavities spaced apart and mirror-image oriented to each other along said central axis. 
   
   
       11 . The mold of  claim 10 , wherein at least one of said plurality of said second set of cores is a thick splitter core separating two casting cavities spaced apart from and oriented the same to each other along said central axis. 
   
   
       12 . The mold of  claim 2 , wherein said plurality of said first set of cores are window cores. 
   
   
       13 . The mold of  claim 2 , wherein said plurality of said second set of cores are splitter cores. 
   
   
       14 . A method for making a mold for multiple castings in sand, the method including the steps:
 providing a flaskless mold, the flaskless mold having a ram portion and a swing portion;   providing a plurality of cores:   stacking the plurality of cores along a central axis to form a core assembly with a plurality of casting cavities;   placing the sand within the ram portion and the swing portion of the flask;   forming a core assembly cavity within the ram portion and the swing portion;   placing the core assembly between the ram portion and the swing portion of the flaskless mold; and   enclosing the core assembly between the ram portion and the swing portion of the flaskless mold to form a mold for multiple castings in sand.   
   
   
       15 . The method of  claim 14 , wherein the plurality of cores includes a plurality of a first set of cores and a plurality of a second set of cores. 
   
   
       16 . The method of  claim 15 , wherein two of the plurality of first set of cores are mirror-image oriented to each other along the central axis. 
   
   
       17 . The method of  claim 15 , wherein two of the plurality of first set of cores are oriented the same to each other along the central axis. 
   
   
       18 . The method of  claim 15 , wherein the plurality of first set of cores are window cores. 
   
   
       19 . The method of  claim 15 , wherein the plurality of second set of cores are splitter cores. 
   
   
       20 . A method for making a mold for multiple castings in sand, the method including the steps:
 providing a flask, the flask having a cope portion and a drag portion;   providing a core assembly, the core assembly further including.
 a central axis; 
 a plurality of window cores and at least two splitter cores, said plurality of window cores and said at least two splitter cores alternately stacked to provide a plurality of casting cavities along the central axis; 
   providing sand within the cope portion and the drag portion of the flask;   placing the core assembly between the cope portion and the drag portion of the flask; and   enclosing the core assembly between the cope portion and the drag portion of the flask to form a multiple casting mold.