| 摘要 |
PURPOSE: A gas exhaust apparatus for a cylinder head is provided to compulsorily exhaust the gas generated by burning an oil passage core to the outside by assembling an oil passage core within an upper mold and arranging a core mounting unit on the oil passage core. CONSTITUTION: A gas exhaust apparatus for a cylinder head comprises a water jacket core(800), an oil passage core(700), an automatic pressing device(300), a vacuum pump(200), and a core mounting unit(100). The water jacket core is arranged between an upper mold(600) and a lower mold(500). The automatic pressing device charges the molten metal by pressurizing the air to a molten metal injection port(900) installed under the lower mold after combining upper and lower molds. The vacuum pump exhausts the casting gas generated by burning the oil passage core to the outside when casting the cylinder head. The core mounting unit is arranged in the upper part where the upper mold and the core are contacted by passing through the upper mold. Passage units(112,114) connected to the oil passage core are formed inside the core mounting unit. Conduit pipes(120,130) connected with the vacuum pump are formed at one side of the core mounting unit.
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