The spray gun is fixed on AutoFlex100, which can move up and down, forward and backward, left and right, and rotate up and down. It can memorize the spray angle and position of the workpiece and realize automatic groove spraying. It adopts the latest digital positioning system and PLC control to ensure stable and reliable lifting. The main control touch screen can display the lifting speed and program multiple working programs. It can also be controlled by an independent touch screen/tablet or mobile phone. The operating system software is user-friendly through simple graphics and Chinese and English analysis.