Ultrasonic welding device

The invention discloses an ultrasonic welding device which comprises an operation table, a Z-axis mounting plate and an ultrasonic welding machine, the Z-axis mounting plate is perpendicularly arranged on the upper portion of the operation table, and the ultrasonic welding device further comprises an air pressure system, a servo system and a pseudo soldering detection system which are matched with the ultrasonic welding machine. The air pressure system and the pseudo soldering detection system are arranged on one side of the Z-axis mounting plate, the air pressure system is used for driving the ultrasonic welding mechanism to linearly move up and down, and the servo system drives a workpiece to be welded to move between the ultrasonic welding machine and the pseudo soldering detection system. And the ultrasonic welding machine, the air pressure system, the servo system and the pseudo soldering detection system are respectively connected with an external welding control terminal. Welding slag can be guided to