Patent ID: 10688586

Abstract:
A welding torch includes first to third wire passages, a wire detection space, and a wire detecting device. The first wire passage has a first wire inlet port allowing a first welding wire to enter thereto and a first wire outlet port allowing the first welding wire to be output therefrom. The second wire passage has a second wire inlet port allowing a second welding wire to enter thereto and a second wire outlet port allowing the second welding wire to be output therefrom. The third wire passage has a third wire inlet port allowing a portion of the first welding wire output from the first wire outlet port and a portion of the second welding wire output from the second wire outlet port to enter thereto, and a third wire outlet port allowing the portion of the first welding wire and the portion of the second welding wire to be output therefrom. The wire detection space is connected to the first and second wire outlet ports and the third wire inlet port. The wire detection space allows the portions of the first and second welding wire to pass through the wire detection space. The wire detecting device is configured to detect the portion of the first welding wire and the portion of the second welding wire in the wire detection space. The welding torch can switch between the welding wires with a simple structure.