Die casting mold for forming inclined hole in cylinder block

Abstract

Disclosed herein is a die casting mold for forming an inclined hole in a cylinder block, in which a core pin forming the inclined hole is installed at a position that does not interfere with a sleeve used as a molten-metal injecting passage in the die casting mold.

1 . A die casting mold for forming an inclined hole in a cylinder block, which has a fixed mold, a movable mold movably mounted to the fixed mold, and a sleeve for injecting molten metal into the molds so as to manufacture the cylinder block through high-pressure casting, wherein the fixed mold includes a moving space comprising:
 a first space including a core pin for forming a flow passage in the cylinder block during casting; and   a second space including an actuator, wherein the first moving space is placed above the sleeve so as to avoid interference with the actuator and the sleeve.   
   
   
       2 . The die casting mold as defined in  claim 1 , wherein one side of the second space is defined to the left side of the sleeve and the other side of the second space is defined to the right side of the sleeve. 
   
   
       3 . The die casting mold as defined in  claim 2 , wherein the core pin is mounted to a movable member installed in the first space. 
   
   
       4 . The die casting mold as defined in  claim 3 , wherein the movable member of the first space reciprocates the actuators each of which is defined in each side of the second space. 
   
   
       5 . A die casting mold for forming an inclined hole in a cylinder block, which has a fixed mold, a movable mold movably mounted to the fixed mold, and a sleeve for injecting molten metal into the molds so as to manufacture the cylinder block through high-pressure casting, the die casting mold comprising:
 a moving space defined in the fixed mold, and having a first space defined above the sleeve so as to avoid interference with the sleeve and a second space defined on each of the left and right sides of the sleeve; and   an inclined-hole machining unit provided in the moving space, and forming an inclined flow passage in the cylinder block during casting, wherein the inclined-hole machining unit comprises:
 a movable member movably installed in the first space; 
 a core pin mounted to the movable member, and forming the flow passage in the cylinder block; and 
 an actuator provided on each side of the second space to reciprocate the movable member. 
   
   
   
       6 . The die casting mold as defined in  claim 5 , wherein the fixed mold comprises a guide hole to guide the insertion of the core pin. 
   
   
       7 . The die casting mold as defined in  claim 6 , wherein the guide hole receives a hollow pin-type bushing so as to prevent damage to material from the core pin. 
   
   
       8 . The die casting mold as defined in  claim 7 , wherein an inlet of the guide hole is provided with a hollow fastening member to prevent removal of the pin-type bushing. 
   
   
       9 . The die casting mold as defined in  claim 5 , further comprising a guide rod installed in the second space to guide movement of the movable member. 
   
   
       10 . The die casting mold as defined in  claim 9 , wherein a first end of the guide rod is connected to the actuator of the second space and a second end of the guide rod is installed in the first space along the moving direction of the movable member. 
   
   
       11 . The die casting mold as defined in  claim 10 , wherein the guide rod is installed to penetrate both ends of the movable member. 
   
   
       12 . The die casting mold as defined in  claim 11 , wherein the movable member has at each of its side ends a first through hole for mounting the guide rod, with a mounting bushing being installed in the first through hole to reduce friction between the first through hole and the guide rod. 
   
   
       13 . The die casting mold as defined in  claim 11 , wherein the movable member has in its center a second through hole for mounting the core pin, the core pin integrally has at its one end a flange which is seated and supported on an inlet of the second through hole, and a removal prevention plate is coupled to the back side of the flange to prevent the core pin from being removed from the second through hole. 
   
   
       14 . The die casting mold as defined in  claim 5 , wherein the actuator comprises a piston rod coupled to each of opposite ends of the movable-member to reciprocate the movable member in the first space. 
   
   
       15 . A vehicle comprising the die casting mold of  claim 1 . 
   
   
       16 . A vehicle comprising the die casting mold of  claim 5 .