PURPOSE: To prevent the breakage of a molten metal supplying pipe caused by thermal expansion by arranging a fitting shaft for connecting a molten metal connecting block to a fitting stay and a die connecting hole on almost the same horizontal line, at the time of pouring the molten metal into the die from the molten metal supplying pipe communicated with a molten metal holding furnace.

CONSTITUTION: A bracket 8 is arranged facing the die casting machine A side from the molten metal holding furnace B. The molten metal supplying connecting block D formed with the die connecting hole 14 connected to a pipe connecting hole 11 for connecting the molten metal supplying pipe C and to a runner hole 12 of die cavity 2 is fitted freely oscillatably back and forth to the bracket 8 through the fitting stay 16. At the same time, the fitting shaft 30 connecting the molten metal supplying block D to the fitting stay 16 and the die connecting hole 14 are arranged on almost the same horizontal line. Further, the molten metal connecting block D is energized toward the stay 16 side with a tension spring 23 and the molten metal supplying pipe C is elastically held between the pipe connecting hole 11 of the molten metal supplying connecting block D and a molten metal supplying hole 6 in the molten metal holding furnace.