Automatic chain welding machine reference to overseas advanced technology to design products and the successful development of the second power-law with resistance welding low-carbon alloy lifting chain, from chain link conveyor, rotating to, welding, upsetting the top, deburring, etc. 19 Action composition, through the cam, electric control, pneumatic and other institutions to implement the action, a high degree of automation can be carried out manually, point moving, semi-automatic and fully automatic, action, stable and reliable operation and maintenance convenient and complete fault protection.