The invention relates to a production device for reinforcement cage frameworks, in particular to a limiting mechanism for the reinforcement cage frameworks. The limiting mechanism for the reinforcement cage frameworks comprises feeding rails arranged on the two sides of a reinforcement cage seam welder, supports are arranged on the feeding rails, and rotary discs coaxial with the reinforcement cage seam welder are rotatably connected to the supports; positioning holes used for positioning reinforcements are formed in the peripheries of the rotary discs around the axes of the rotary discs, the axis of the reinforcement cage seam welder is fixedly provided with a feeding core shaft rod, and feeding thread sleeves connected with the feeding core shaft rod are arranged at the axes of the rotary discs; the feeding rails are each of a magnetic structure, containing holes are formed in the horizontal contacting surfaces of feeding limiting blocks and the feeding rails and are internally provided with rolling balls, and pre-tightening springs are arranged between the rolling balls and the bottom surfaces of the containing holes; and electromagnetic switches are arranged on the bottom surfaces of the containing holes. The limiting mechanism for the reinforcement cage frameworks has the beneficial effects that the coaxiality of the reinforcement cage frameworks can be effectively improved, and deformation of the reinforcement cage frameworks in the welding process is avoided.