Wire passing fixing die

The utility model discloses a threading fixing die, which comprises a base, a mounting seat, a fixing cylinder and a nylon plastic liner, the mounting seat is mounted at the upper end of the base, the mounting seat is connected with the base through a fixing bolt, a straightening machine is arranged at the discharge end of the mounting seat, the fixing cylinder is arranged at the feed end of the mounting seat, and the nylon plastic liner is arranged in the fixing cylinder. A through groove is formed in the position, located at the discharging end of the fixing cylinder, of the mounting base, a nylon plastic inner container is mounted on the inner side of the fixing cylinder, a conical hole is formed in the inner side of the nylon plastic inner container, a through hole is formed in one end of the conical hole, and a copper wire penetrates through the conical hole and the through hole. The nylon plastic inner container can assist copper wires to enter the straightening machine more easily, so that the straight