Uniform anti-eccentricity injection mold

The invention relates to the related technical field of injection molds, in particular to a uniform anti-eccentricity injection mold which comprises a lower mold structure and an upper grinding structure, and each of the lower mold structure and the upper grinding structure comprises a first-stage mold body and a second-stage mold body; the first-stage mold body is provided with a first-stage main air inlet cavity, a second-stage main air inlet cavity, a first-stage secondary air inlet cavity, a second-stage secondary air inlet cavity and a first-stage piston groove. The first-stage piston is movably mounted in the first-stage piston groove, and the limiting assemblies are arranged in the limiting piece mounting grooves in the two sides of the first-stage piston groove, so that the first-stage piston is limited through the limiting assemblies, and the air supply equipment continuously pressurizes the first-stage piston, so that when the limiting assemblies are loosened, the first-stage piston is stopped; and