A casting mold device includes a lower die and an upper die capable of being attached to or detached from the lower die and is configured to produce a cylinder head having spark plug mounting portions. In particular, the casting mold device includes: i) a plurality of core pin assemblies mounted in the upper die to form the spark plug mounting portions and having cooling air flow paths formed therein, ii) a cooling unit installed on the upper die and including cooling air inlet portions and cooling air outlet portions respectively connected to the cooling air flow paths of the core pin assemblies, and iii) a sealing unit coupled to the cooling unit and the upper die to seal portions between the core pin assemblies and the cooling unit.

A casting mold device includes a lower die and an upper die capable of being attached to or detached from the lower die and is configured to produce a cylinder head having spark plug mounting portions. In particular, the casting mold device includes: i) a plurality of core pin assemblies mounted in the upper die to form the spark plug mounting portions and having cooling air flow paths formed therein, ii) a cooling unit installed on the upper die and including cooling air inlet portions and cooling air outlet portions respectively connected to the cooling air flow paths of the core pin assemblies, and iii) a sealing unit coupled to the cooling unit and the upper die to seal portions between the core pin assemblies and the cooling unit.

A die-casting mold includes a first mold insert located on a side of a fixed die, and a second mold insert located on a side of a movable die. The first mold insert includes first through-holes filled with a melted metal material to be used to mold heat sink pins. The second mold insert includes second through-holes usable to discharge gas in a molding space. At least one of a first facing surface and a second facing surface includes recessed grooves communicated with the first and second through-holes when the first and second mold inserts are located in place, and the recessed grooves prevent the melted metal material from passing therethrough but allow the gas to pass therethrough. As seen in a die moving direction, the first through-holes do not overlap at least a portion of the second through-holes.

A die-casting mold includes a first mold insert located on a side of a fixed die, and a second mold insert located on a side of a movable die. The first mold insert includes first through-holes filled with a melted metal material to be used to mold heat sink pins. The second mold insert includes second through-holes usable to discharge gas in a molding space. At least one of a first facing surface and a second facing surface includes recessed grooves communicated with the first and second through-holes when the first and second mold inserts are located in place, and the recessed grooves prevent the melted metal material from passing therethrough but allow the gas to pass therethrough. As seen in a die moving direction, the first through-holes do not overlap at least a portion of the second through-holes.