Injection molding machine with limiting structure

The utility model discloses an injection molding machine with a limiting structure, which comprises a workbench, a turntable assembly is arranged in the workbench, the turntable assembly comprises a gearbox, a rotating shaft, a gear and a disc, a disc positioning assembly is arranged on the outer side of the rotating shaft in the workbench, a guide limiting assembly is arranged at the upper end of the workbench, and the guide limiting assembly is arranged on the outer side of the rotating shaft. The guide limiting assembly comprises a guide rail and a sliding block, and an injection molding machine is arranged on the sliding block. The cambered surface positioning groove, the guide positioning assembly, the injection molding machine and the forming mold are used in cooperation, the guide positioning assembly is used for conducting contact positioning on the cambered surface positioning groove, when the first mold and the second mold are aligned, the positioning ball is aligned with the cambered surface positi