| 摘要 |
A device for casting a cylinder head of an internal combustion engine having a crankshaft and a plurality of cylinders, each of which having a plurality of ports for air intake and exhaust, wherein the device is provided with: a cast that includes an upper mold, a lower mold, and left and right molds that approach and move away from each other in a relative fashion so as to demarcate therein cavities that correspond to the outer shape of a cylinder head; and a port core that is supported inside the cavities and that includes a plurality of body parts having an outer shape that corresponds to the plurality of ports, and a plinth integrally molded with the plurality of body parts on the base end side of the plurality of body parts. The lower mold has air intake and exhaust hole formation surfaces that correspond to the air and exhaust holes on the combustion chamber side of the port, and a port core support surface that corresponds to the mounting surface to the cylinder block of the cylinder head. The left and right molds have a port-core-pressing surface that faces the port core support surface. The port core is supported inside the cavity by the distal end of the body parts being in contact with the air intake and exhaust hole formation surfaces, the lower surface of the plinth being in contact with the port core support surface, and the upper surface of the plinth being in contact with the port-core-pressing surface. |
