Energy storage fixed spot welding machine

The utility model provides an energy storage fixed spot welding machine which comprises a machine body, a multi-section type welding air cylinder, an upper welding head, a workbench and a lower welding head, the multi-section type welding air cylinder comprises a plurality of air cylinders and a guide mechanism, each air cylinder comprises a cylinder barrel and a piston rod, the cylinder barrels of every two adjacent air cylinders are fixedly connected, and the piston rods of every two adjacent air cylinders are fixedly connected. The guide mechanism comprises a columnar outer cover and a main shaft movably arranged in the columnar outer cover, the main shaft is in driving connection with the upper welding head, the columnar outer cover is fixedly connected to the bottom of a cylinder barrel of the cylinder body on the bottommost layer of the multi-section welding cylinder, and the main shaft is fixedly connected to a piston rod of the cylinder body on the bottommost layer of the multi-section welding cylinde