Automatic ultrasonic welding machine

The invention discloses an automatic ultrasonic welding machine which comprises a workbench, a feeding mechanism, a grabbing mechanism, a welding mechanism, a transferring mechanism, a detecting mechanism and a controller. The controller is installed on the upper portion of the workbench, and the feeding mechanism, the grabbing mechanism, the welding mechanism, the transferring mechanism and the detecting mechanism are controlled to work through the controller. The feeding mechanism comprises a feeding electric cylinder, a feeding disc set and a first distance sensor, the feeding disc set and the first distance sensor are connected with the feeding electric cylinder, the grabbing mechanism comprises a grabbing mechanical arm assembly and a linear moving assembly, the linear moving assembly is used for driving the mechanical arm assembly to move linearly, and the supporting plate assembly is matched with the ultrasonic welding assembly. The transfer assembly is used for transferring the supporting plate assemb