Bush injection mold

The invention discloses a bush injection mold. A plurality of groups of molding inserts which can move back and forth, are sequentially arranged, and are in sliding fit on a lower mold plate are arranged in a lower mold frame, wherein each group of molding inserts comprise a left insert and a right insert; the left inserts and the right inserts are attached with each other to form a plurality of product molding cavities; the lower mold plate is provided with positioning columns which are used for positioning a product aluminum core in each product molding cavity; all left inserts on the plurality of molding inserts are linked in the same direction; all right inserts are linked in the same direction; the bush injection mold also comprises a product iron ring clamping clamp; the combined clamping clamp is used for placing iron rings once, and can be accurately and stably put into a mold cavity by matching with the positioning columns on the lower mold plate; meanwhile, the aluminum cores can be prevented from colliding with the metal iron rings; the clamping clamp is taken down after the iron cores are placed, so that accurate positioning of the iron rings and the aluminum cores can be effectively ensured; mass placement is achieved; the production process cycle is shortened; the mold discharge speed is increased; and mass production is achieved.