To improve the pouring yield in the casting, and to facilitate the assembly and disassembly of a mold by loading the mold in which a lower die, a body die, and an upper die are set in an outer sleeve on a rotary table, and traveling a pouring device on a rail arranged on the upper part of the line.

An outer sleeve 21 of a mold 2 is loaded so as to be agreed with the axis of rotation of a rotary table 1. The outer sleeve 21 is cylindrical, and its lower part is covered with a bottom plate 211. A lower die 22, a body die 23, and an upper die 24 are stacked in the outer sleeve 21, and tightened to the outer sleeve 21 at an upper part of the outer sleeve by a cotter pin 25. A ladle is loaded on a pouring device, and the pouring device traveled on a rail, and stopped at a first casting device of the line of the casting device. When the rotation of the mold 2 is stationary, the ladle of the pouring device is inclined and the molten metal poured into the mold 2 from an upper mouth of the upper die 24. The heat insulation material is charged from an heat insulation material charging device to a part from the upper mouth of the mold 2 to a riser part.