Tail lamp ultrasonic welding device

The utility model discloses a tail lamp ultrasonic welding device, and relates to the technical field of tail lamp machining. A hydraulic cylinder is fixed on one side of the workbench; a mounting frame is fixed on an output shaft of the hydraulic cylinder; a positioning plate is fixed at one end of the mounting frame; a positioning rod is fixed on the upper surface of the workbench; a plurality of protection rods are fixed to one end of the supporting rod, protection blocks are fixed to one ends of the protection rods, a mounting groove is formed in one side of the supporting rod, a plurality of fixing grooves are formed in the two sides of the supporting rod at equal intervals, a mounting rod is slidably connected to the inner wall of the mounting groove, and first springs are fixed to the two sides of the mounting rod. Through the effect of the supporting rod, the length and the angle of the mounting rod can be flexibly adjusted, compared with a traditional fixed support, tail lamp covers of different mode