Steel bar binding device

The utility model provides a reinforcing steel bar binding device, which relates to the field of reinforcing steel bar binding, and comprises a support, a steel bar binding device and a steel bar binding device, the bundling gun is arranged at the head end of the containing cavity; and the bundling wire disc is rotatably arranged in the containing cavity and is located behind the bundling gun in the feeding direction of the bundling wire. According to the strapping gun, the support provides a containing space for the strapping gun and the strapping wire disc, the strapping wire disc is arranged behind the strapping gun in the feeding direction of the strapping wires, the strapping wire disc can provide sufficient strapping wires for the strapping gun, the capacity of the strapping wires is improved, the defect that the capacity of a strapping wire bin of the strapping gun is insufficient is overcome, and the strapping gun is convenient to use. The strapping gun can continuously work for a long time in the usi