Novel venting plug apparatus

The utility model discloses a novel core vent device used for the condition that the narrow part of a mould core cavity can not be added with the core vent and solving the problem that local part of the sand core cannot be charged fully. The novel core vent device comprises a core vent main body and a core vent. Compared with the traditional design proposal of a core box, only the arrangement of the core vent on the core box is changed from the front fixed position type into the back movable position type in the novel core vent device. The novel core vent device has the advantages that the problems that the narrow part of the mould core cavity can not be added with the core vent and local part of the sand core cannot be charged fully are solved, thereby being adapted to the exhaust of the core box with the complicated technology requirement.