Low-pressure casting apparatus
First Claim
1. A low-pressure casting apparatus for casting molten metal into a casting mold, into which a large capacity of molten metal is to be cast, in addition to a casting mold of a small capacity, by pressurizing molten metal contained in a crucible, and by casting the molten metal through a stalk into the casting mold said casting apparatus comprising:
- a die base on which the mold 29 is mounted, at least two furnaces for holding molten metal, each having a crucible, the capacity of which crucible to accommodate the molten metal is smaller than that of said casting mold, into which a large capacity of molten metal is to be cast, and which crucible is disposed in the furnace, and a pressure chamber,at least two transport cars, which are equipped with elevator means for carrying and moving up and down each of the holding furnaces, and which can move each of the holding furnaces 16 and each of the elevator means to a position just under the casting mold,at least two stalks, mounted on the holding furnaces 16, for making each of the crucibles communicate with a cavity of the casting mold via a press-contacting mechanism,pressurized-gas supply means for supplying a pressurized gas to each pressure chamber of the holding furnaces, at least two connecting mechanisms, detachably mounted on the holding furnaces, for communicably connecting the supply means with the pressure chamber of their respective holding furnaces, andcommunication mechanisms for making the pressure chambers of the holding furnaces communicate with one another.
1 Assignment
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Accused Products
Abstract
A low-pressure casting apparatus is provided wherein molten metal can be precisely cast even into a casting mold of a comparatively small capacity, not to mention a casting mold into which a large capacity of molten metal is to be cast, and wherein the casting mold is accurately pressurized. The casting mold, into which a large capacity of molten metal is to be cast, can be cast by connecting at least two crucibles to the casting mold via at least two stalks and at least two connection mechanisms, and by connecting at least two molten-metal holding furnaces to the pressurized-gas supply means via at least two connecting mechanisms, after the pressure chambers of the holding furnaces are made to communicate with each other via the communication mechanisms. A casting mold of a relatively small capacity can also be cast by connecting one of the crucibles to the mold via one of the stalks and one of the connecting mechanisms, and by connecting one of the holding furnaces to the pressurized-gas supply means via one of the connecting mechanisms.
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Citations
4 Claims
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1. A low-pressure casting apparatus for casting molten metal into a casting mold, into which a large capacity of molten metal is to be cast, in addition to a casting mold of a small capacity, by pressurizing molten metal contained in a crucible, and by casting the molten metal through a stalk into the casting mold said casting apparatus comprising:
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a die base on which the mold 29 is mounted, at least two furnaces for holding molten metal, each having a crucible, the capacity of which crucible to accommodate the molten metal is smaller than that of said casting mold, into which a large capacity of molten metal is to be cast, and which crucible is disposed in the furnace, and a pressure chamber, at least two transport cars, which are equipped with elevator means for carrying and moving up and down each of the holding furnaces, and which can move each of the holding furnaces 16 and each of the elevator means to a position just under the casting mold, at least two stalks, mounted on the holding furnaces 16, for making each of the crucibles communicate with a cavity of the casting mold via a press-contacting mechanism, pressurized-gas supply means for supplying a pressurized gas to each pressure chamber of the holding furnaces, at least two connecting mechanisms, detachably mounted on the holding furnaces, for communicably connecting the supply means with the pressure chamber of their respective holding furnaces, and communication mechanisms for making the pressure chambers of the holding furnaces communicate with one another. - View Dependent Claims (2, 3, 4)
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Specification