Foundry sand blowing apparatus
AssigneeMazda Motor Corporation
InventorsYutaka Sakoda, Akira Tumoto, Shigetoshi Nakano, Fujio Fujii
Life of this patent
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Abstract
A foundry sand blowing apparatus for blowing foundry sand into a mold in forming a die such as a core for use in shell mold process or the like comprises a foundry sand storage tank provided with an eject pin. The eject pin is movable between an ejecting position in which it projects outside the storage tank through a sand discharge port provided in the tank to be aligned with the sand blowing port of the mold and a retracted position in which it is retracted from the sand blowing port into the tank. The tank is further provided with an eject pin driving mechanism for moving the eject pin to the ejecting position to eject the product away from the mold and to the retracted position.
Claims15
A foundry sand blowing apparatus for blowing foundry sand stored in a sand storage tank into a cavity of a mold through a sand discharge port formed in the sand storage tank wherein the improvement comprises an eject pin provided in the sand storage tank to be movable between a retracted position in which it is retracted in the sand storage tank and an ejecting position in which the lower end portion of the eject pin projects outside the sand storage tank through the sand discharge port, and an eject pin driving means for moving the eject pin between the retracted position and the ejecting position.
Dependencies are inferred from the claim text.