Maintainable device for prolonging ejection stroke of injection mold

The utility model provides a maintainable injection mold ejection stroke extending device which comprises a bottom support, a lower mold, an upper mold, an upper side connecting plate, a side edge positioning frame structure, a storage frame, a storage pipe and a detachable extending top frame structure, and the lower mold is installed on the upper portion of the bottom support; an upper die is arranged at the upper part of the lower die; an upper side connecting plate is mounted at the upper part of the upper die through a bolt; side edge positioning frame structures are mounted on the left sides and the right sides of the lower mold and the upper mold respectively; a storage frame is embedded into the inner side of the lower mold; storage pipes are embedded into the left side and the right side of the upper portion of the lower die respectively. The ejection block is attached to the inner wall of the storage pipe, so that materials can be prevented from flowing down from the storage pipe during use, and the