Heat sink manufacturing device and manufacturing method

Abstract

It is an object of the present invention to provide a device and method for manufacturing a heat sink that has a base and heat radiating fins of various shapes and has prescribed strength, high heat-radiating efficiency, and whose base and heat-radiating fins are formed integrally. A heat sink manufacturing device according to the present invention includes a die casting machine which has the cavity for a base and heat-radiating fins, and which includes a fixed mold, a movable mold that can move in the vertical or up-down direction, and a slide mold that can move in the horizontal direction.

What is claimed is:  
     
         1 . A heat sink manufacturing device comprising: 
 a die casting machine which has a cavity for forming a heat sink including a base and heat-radiating fins, and which includes a fixed mold, a movable mold that can move in a first direction, and a slide mold that can move in a second direction that is substantially perpendicular to said first direction.    
     
     
         2 . The manufacturing device as described in  claim 1 , wherein 
 said first direction is an up-down direction, and said second direction is the horizontal direction.    
     
     
         3 . The heat sink manufacturing device as described in  claim 2 , wherein 
 said base is formed by said fixed mold and said movable mold that can move in the up-down direction, and    said heat-radiating fins are formed by said fixed mold, said movable mold that can move in the up-down direction, and said slide mold.    
     
     
         4 . The heat sink manufacturing device as described in  claim 2 , wherein said slide mold has at least two parts that extend in the horizontal direction and are separate from each other.  
     
     
         5 . The heat sink manufacturing device as described in  claim 4 , wherein said parts that extend in the horizontal direction and are separate from each other are parts of polygonal cylinder shape.  
     
     
         6 . The heat sink manufacturing device as described in  claim 4 , wherein said parts that extend in the horizontal direction and are separate from each other include at least two curved parts.  
     
     
         7 . The heat sink manufacturing device as described in  claim 4 , wherein said slide mold has a lattice shape in a vertical cross-section thereof.  
     
     
         8 . The heat sink manufacturing device as described in  claim 4 , wherein said slide mold in a vertical direction thereof has multiple parallel waveform shapes.  
     
     
         9 . The heat sink manufacturing device as described in  claim 4 , wherein said heat sink has a heat pipe.  
     
     
         10 . A heat sink manufacturing method comprising the steps of: 
 providing a die casting machine which has a cavity for a heat sink to be formed, said cavity consisting of a first cavity for a base and a second cavity for heat-radiating fins, of the heat sink, and said die casting machine including a fixed mold, a movable mold that can move in a first direction, and a slide mold that can move in a second direction that is substantially perpendicular to said first direction;    arranging molds of said die casting machine such that said first cavity for the base is formed by said fixed mold and said movable mold that can move in the up-down direction, and said second cavity for the heat-radiating fins is formed by said fixed mold, said movable mold that can move in the up-down direction, and said slide mold;    injecting molten metal into said cavities and cooling said metal to the prescribed temperature; and    moving said movable mold up-down and moving said slide mold in the horizontal direction, to thereby manufacture the heat sink.    
     
     
         11 . The manufacturing method as described in  claim 10 , wherein 
 said first direction is the up-down direction, and said second direction is the horizontal direction.    
     
     
         12 . The heat sink manufacturing method as described in  claim 11 , wherein said slide mold is prepared to have at least two parts that extend in the horizontal direction and are separate from each other.  
     
     
         13 . The heat sink manufacturing method as described in  claim 12 , wherein said parts that extend in the horizontal direction and are separate from each other are parts of polygonal cylinder shape.  
     
     
         14 . The heat sink manufacturing method as described in  claim 12 , wherein said parts that extend in the horizontal direction and are separate from each other include at least two curved parts.  
     
     
         15 . The heat sink manufacturing method as described in  claim 12 , wherein said slide mold is a lattice shape in a vertical cross-section thereof.  
     
     
         16 . The heat sink manufacturing method as described in  claim 12 , wherein said slide mold has multiple parallel waveform shapes in a vertical direction thereof.  
     
     
         17 . The heat sink manufacturing method as described in  claim 10 , wherein said heat sink is made to have a heat pipe.  
     
     
         18 . The heat sink manufacturing method as described in  claim 11 , wherein first, said movable mold is moved up-down, and next, said slide mold is moved in the horizontal direction.  
     
     
         19 . The heat sink manufacturing method as described in  claim 11 , wherein first said slide mold is moved in the horizontal direction, and next, said movable mold is moved up-down.