Multifunctional infinite rotation TIG welding machine head

The utility model provides a multifunctional infinite rotation TIG welding machine head, and relates to the technical field of welding equipment. The multifunctional infinite rotation TIG welding head comprises a supporting seat, a welding gun, a rotation assembly, a first arc voltage tracking assembly, a second arc voltage tracking assembly, a sliding ring assembly, a transition seat and a wire feeding assembly, the rotation assembly comprises an outer gear ring crossed roller bearing, the supporting seat is connected with an inner ring of the outer gear ring crossed roller bearing, and the transition seat is connected with an outer gear ring. The first arc voltage tracking assembly is installed on the transition base and is in driving connection with the second arc voltage tracking assembly, the second arc voltage tracking assembly is in driving connection with the welding gun, and the wire feeding assembly is located between the rotation assembly and the transition base and connected with the transition ba