Mold with size adjusting function

The invention discloses a mold with a size adjusting function. The mold comprises a mold body; the mold body is provided with a mold base; an upper cover plate is arranged at the upper end of the moldbase; the lower end of the upper cover plate is connected with the mold base through a hydraulic rod; a groove is formed in the upper end of the mold base; a pressing block matched with the groove isfixedly mounted at the lower end of the upper cover plate; a cavity is formed in the mold base; a pushing cylinder is mounted on the inner wall of the mold base; one side of the pushing cylinder is connected with multiple pushing air rods; one ends of the pushing air rods are fixedly connected with a cavity separation plate; one end of the cavity separation plate is connected with an extension port; and a mark is arranged on one side of the mold base. The mold with the size adjusting function has the characteristics of adjustable sizes and wide application range; the sizes are changed throughthe pushing cylinder added