Clamping mechanism of steel bar bender

The utility model relates to the field of steel bar benders, and discloses a steel bar bender clamping mechanism which comprises steel bar bending equipment, a machining disc is rotatably mounted in the middle of the upper surface of the steel bar bending equipment, and a limiting support is fixedly mounted at the position, close to the machining disc, of the upper surface of the steel bar bending equipment. A fixing frame is welded to the top of one side of the steel bar bending equipment, a containing sliding groove is formed in the upper surface of the fixing frame, a hydraulic cylinder is installed on the edge of the top end of the fixing frame, a movable part is installed at the position where one end of the hydraulic cylinder extends into the containing sliding groove, and connecting blocks are symmetrically welded to the upper surface of the movable part through the containing sliding groove. According to the steel bar bending device, the movable support is matched with the fixed support to support a b