| 摘要 |
PURPOSE:To obtain many castings with one casting machine by pouring a molten metal into cavities through the respective sprue pipes corresponding to the number of the cavities, sealing the molten metal by rotation or linear movement of the sprue pipes and retaining the pressure by using the liners provided to the wall surfaces of dies. CONSTITUTION:Sprue pipes 11 of the number corresponding to the number of cavities are connected to forming dies 1, 2 and after a molten metal 12 is poured into the dies 1, 2 through the pouring holes 13 of the pipes 11, the pipes 11 are rotated 90 deg. to seal the molten metal 12 in the dies 1, 2. The horizontal liner 3 and drag liner 4 disposed to the wall surfaces of the dies 1, 2 are pressed to retain the pressure of the molten metal 12. Water is passed through cooling holes 8 in order to solidify the molten metal 12 packed in a gate 7 then the solidified castings are removed from the dies 1, 2 by ejector pins 10 after the pipes 11 are separated. The many castings are thus cast with the less number of the casting machine. |
