Straightening box for metal wire machining

The utility model relates to the technical field of metal wire processing, and discloses a straightening box for metal wire processing, which comprises a main body mechanism, a straightening mechanism and a heating mechanism, the straightening mechanism is positioned on the front side of the main body mechanism, and the heating mechanism is positioned at the top end of the main body mechanism; the main body mechanism comprises a straightening box, an air cylinder is fixedly connected to the top end of the straightening box, a sliding rod is fixedly connected to the output end of the air cylinder, a mounting plate is fixedly connected to the bottom end of the sliding rod, and a guide rod is fixedly connected to the inner wall of the straightening box. By arranging the air cylinder, the air cylinder is specifically started, the lower sliding rod is driven by the air cylinder to drive the mounting plate to move downwards, meanwhile, the mounting plate slides on the surface of the guide rod, and the telescopic ro