Straightening device on cold header

The utility model discloses a straightening device on a cold header, and relates to the technical field of cold headers, the straightening device comprises a supporting table, one side of the supporting table is fixedly connected with a supporting plate, the outer wall of the supporting plate is provided with a shaft rod groove and a movable groove, the bottom of the supporting table is fixedly connected with a supporting frame, and one side of the supporting frame is provided with a lead screw motor; the output end of the lead screw motor is fixedly connected with a lead screw through a coupler, the outer wall of the lead screw is in threaded connection with a sliding table, and the top of the sliding table is fixedly connected with a supporting pipe. The screw rod motor drives the screw rod, the sliding table and the supporting pipe to move in the horizontal direction, so that the fixing rod and the straightening wheel sets are driven to be used for distance adjustment, workers do not need to manually adjus