Automatic molten metal injector
AssigneeShin-Ei Die Casting Ind. Co., Ltd.
InventorYukihisa Choshi
Life of this patent
Estimating the term…
Abstract
An automatic molten metal injector is provided which has no rotary frictional parts and is thus durable. The injector has a furnace holding a molten metal to a predetermined level and having a first port. A fixed sleeve is provided in the furnace so as to be submerged in the molten metal and has a second port communicating with the first port. A slide sleeve having a side wall formed with a third port and a closed bottom wall is received in the fixed sleeve so as to be vertically slidable between a raised position in which the third port communicates with the second port, and a lowered position in which the third port communicates with the interior of the furnace. A piston is vertically slidably received in the slide sleeve. A drive unit individually or simultaneously raises and lowers the slide sleeve and the piston.
Claims7
An automatic molten metal injector comprising:
- a furnace for holding a molten metal, said furnace having a first port;
- a fixed sleeve provided in said furnace so as to be submerged in the molten metal, said fixed sleeve having a second port communicating with said first port;
- a slide sleeve having a side wall formed with a third port and a closed bottom, said slide sleeve being received in said fixed sleeve so as to be vertically slidable between a raised position in which said third port communicates with said second port, and a lowered position in which said third port communicates with an interior of said furnace;
- a piston vertically slidably received in said slide sleeve;
- and
- a drive unit for selectively individually and simultaneously raising and lowering said slide sleeve and said piston.
Dependencies are inferred from the claim text.