Die-casting die flange locating structure

The utility model discloses a die-casting die flange locating structure which comprises a die body. A flange hole is formed in the lower portion of the die body. A notch with an outward opening is formed below the flange hole. The notch is connected with the flange hole. The two side faces of the notch are tangent to the periphery face of the flange hole. The bottom ends of the two side faces of the notch are in transition connection with the bottom side of the die body through arc faces respectively. The positions of a flange and the flange hole can be aligned thorough the notch, and the flange hole in the die body and the flange of a die-casting machine can be assembled quickly. Meanwhile, the bottom ends of the two side faces of the notch are in transition connection with the bottom side of the die body through the arc faces respectively, assembling can be achieved easily, and during assembling, the opening of the notch in the die body cannot be abraded. Quick die assembling is achieved, die assembling time is shortened, and production efficiency is improved.