The door panel four axis double mechanical arm ultrasonic welding machine adopts XYZ three axis double mechanical arm, which can change the mold, and the bottom plate can rotate at a certain angle to realize the welding of solder joints at different angles. Servo electric drive. The equipment has high precision, simple operation and short welding cycle. The ultrasonic welding unit has depth mode and time mode, and adopts the ultrasonic system imported from Europe.