Air passage core manufacturing method and air passage core manufacturing equipment

Abstract

The invention discloses an air passage core manufacturing method and air passage core manufacturing equipment. The air passage core manufacturing equipment utilizes a hot core box core shooter to manufacture an air passage core, and meanwhile, a side pulling mechanism is arranged on one side or two sides of a core box of the hot core box core shooter. The side pulling insert of the side pulling mechanism replaces precoated sand to fill the inner cavity of the air inlet pipe of the to-be-formed air passage core, the side pulling mechanism can carry out one-way emptying or two-way emptying on the to-be-formed air passage core in the length direction, uncured precoated sand does not need to be overturned and poured out in a vibration mode, an on-site noise is reduced, meanwhile, the wall thickness of the air inlet pipe of the air passage core is uniform after the air inlet pipe is emptied, the heating state of the air passage core is optimized, the forming precision of the inner cavity of the air inlet pipe of the air passage core is improved, and the forming precision of the air passage core is also improved.

Description

technical field [0001] The invention relates to the technical field of casting equipment, in particular to an airway core-making method and airway core-making equipment. Background technique [0002] Airway cores are sand cores that form the intake passages from the cylinder head into the engine block. [0003] In the prior art, the airway core is made by the coated sand shell core method. The coated sand shell core method is to fill the coated sand into the heated metal core box and keep it for a certain period of time so that the The coated sand forms a plastic shell with a certain thickness along the inner wall of the core box, then pours out the excess coated sand, continues heating for a certain period of time, opens the core box and ejects the shell core to obtain the airway core. [0004] The airway core is produced by the coated sand shell core method. The coated sand in the core box is gradually solidified from the outside to the inside, and the inside cannot be cu...

AI Technical Summary

Problems solved by technology

[0004] The airway core is produced by the coated sand shell core method. The coated sand in the core box is gradually solidified from the outside to the inside, and the inside cannot be cured. It is still a loose coated sand, which needs to be turned over and poured out by vibration. Coated sand affects the forming accuracy of the airway core, and at the same time there is a lot of noise on site

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