Method and apparatus for manufacturing metallic parts by fine die casting
AssigneeTakata Corporation
InventorKaname Kono
Life of this patent
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Abstract
An injection molding system includes a feeder in which a metal is melted and a first chamber into which a desired amount of melted metal is introduced. A piston in a second chamber first retracts to create suction, assisting in drawing in the melted metal into the second chamber from the first chamber and evacuating gas. A ram then pushes some melted metal remaining in the first chamber into the second chamber, forcing out gas present in the second chamber. The piston then injects the melted metal out of the second chamber into a mold. The melted metal is preferably maintained in a liquid state throughout the system.
Claims28
A method of injecting melted material into a mold, comprising:
- introducing the melted material into a first chamber;
- allowing at least a portion of the melted material to pass through said first chamber into a second chamber, wherein said allowing step comprises creating a suction in the second chamber to draw the portion of the melted material from the first chamber into the second chamber;
- pushing at least a portion of the melted material remaining in the first chamber into said second chamber;
- and
- injecting the melted material from the second chamber into the mold.
Dependencies are inferred from the claim text.