Inner locating pin device capable of locating accurately

The utility model relates to the technical field of casting, and specifically discloses an inner locating pin device capable of locating accurately. The inner locating pin device capable of locating accurately comprises an upper case and a lower case; and the inner locating pin is characterized in that the locating grooves of the upper case and the lower case are respectively embedded with locating bushes, and a locating pin is arranged between the locating bushes of the upper case and lower case. In comparison with the prior art, the added locating bushes are sleeved on the locating pin of the mold in advance, after modeling, the locating bushes are left in the casting mold to form a locating hole, the locating bushes are added in the upper and lower cases, the locating bushes are embedded in a sand mold, a guide contact face in the case closing process is changed skillfully, the original contact between the sand molds is changed into the contact between metals, strength is increased, and dislocation is avoi