To provide a die-casting die which has increased cooling efficiency by efficiently passing a cooling medium through the inner recessed part of a spool core, and can be highly efficiently cooled.
The die-casting die 10 includes: a plunger tip 45 advancing the inside of a cylindrical spool bush 40 and pressing a molten metal; a spool core 50 arranged in front of the spool bush 40, receiving the molten metal pressed by the plunger tip 45 at a colliding part 55 and introducing the molten metal into a runner 16; and cooling members 60, 62 for cooling the spool core 50 from the inside by passing the cooling medium through the inner recessed part 57 of the spool core 50. In the cooling members 60, 62, a flow passage provided at the internal region of the colliding part 55 of the spool core 50 is formed, and also, the recessed part is formed over almost the half-circumferential face at the internal region of a runner part 56 continuing to the colliding part 55.
MANDA KOTA
IMAI NORIO
TAKETO MITSUHISA
Hayashi Ichiyoshi
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