The invention relates to a corrugated sheet automatic welding machine, wherein it comprises a frame and a movable cart at the bottom of frame; the frame has a walking system with long axle and short axle while the long axle drives motor and the short axle executes motor; the long axle and the long axle drive motor are connected by gear and tooth bar; the rotation axle of short axle drive motor is connected to the short axle via gear; the welding seam track system comprises a horizontal track executor, a vertical track executor; the welding gun swinger comprises a base, an arc rotation disc, a welding gun clamper, a welding gun clamper fixer and a motor driver; the control system comprises a main control tank, a control panel, an input module, a micro processing module, a storage module, a power module, a welding swinger executing module, a walking system executing module, and a welding seam track module. Said welding machine can weld when the welding gun is always at best position, to realize automatic welding, with uniform welding seam. |