The double robot ultrasonic welding machine can change the mold, adopts XYZ three-axis mechanical arm, and the base plate adopts rotary table, which can rotate 180 degrees horizontally. When welding products, another product can be taken and placed. Servo electric drive, screw 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.