ELECTRIC RESISTANCE LINE WELDING MACHINE AND ELECTRIC RESISTANCE SPOT WELDING MACHINE OF OVERLAPPED METALLIC SHEETS WITH INDUCTION HEATING AND SURFACE ROTATIONAL FRICTION HEATING

摘要

The present invention relates to an electric resistance line welding machine for overlapping metal plate material by induction heating and surface rotation friction, so that the first metal plate material and the second metal plate material layered therebetween are located, and the upper spot welding rod contacts the upper and lower parts of the metal plate material. And a lower spot welding rod, wherein in the electric resistance spot welding machine performing spot welding, the upper spot welding rod and the lower spot welding rod are respectively supplied with current from the first current supply unit and the spot welding electrode tip is coupled to one end. The spot welding support rod and the hollow are formed to accommodate the spot welding support rod inside, and generate frictional heat by rotating contact with the metal plate at one end, and a rotating friction plate is formed in which a hole is formed to move the spot welding electrode tip. A rotating friction rod and a hole are formed to move the rotating friction plate, and one end of the spot welding rod is in contact with the metal plate. Induction heating including an induction heating electrode tip and an induction coil positioned on the outside of the induction heating electrode tip to receive the induction heating electrode tip, and receiving an electric current from a second current supply unit to induction heating the electrode tip and the metal plate It includes a portion, and characterized in that it comprises a line welding moving portion to transfer the upper spot welding rod and the lower spot welding rod together to perform line welding.