Rebar Binding Machine Wire-End Bending to Prevent Protrusion

The patent introduces a bending unit as an intermediary device between the gripping unit and the wire. This bending unit includes a bending member that actively bends the wire end portions toward the binding objects, ensuring reliable directional control. The bending member acts as a mediator that transforms the gripping action into controlled bending, solving the problem of unreliable wire direction without compromising workability.

The patent replaces the conventional mechanical twisting system with a dedicated bending mechanism. Instead of relying on the twisting action to control wire direction, the invention uses a separate bending unit with a bending member that specifically targets wire end portions. This mechanical substitution allows independent control of wire bending direction while maintaining the twisting function for binding.

The patent segments the wire treatment into two distinct functions: the main body of the wire performs the binding function through twisting, while the end portions are separately controlled by the bending unit. This segmentation allows the binding region to maintain its traditional twisted configuration for strength, while the end portions are independently bent to prevent projection and interference with work.

The bending unit performs preliminary bending action on the wire end portions before the twisting operation. By pre-bending the wire ends toward the binding objects, the invention ensures that subsequent twisting does not cause the distal ends to project beyond the twisted region, thereby preventing interference with work while maintaining binding effectiveness.