Adjustable wrenches and small hook head wrenches should be used. The adjustable wrench can effectively fix the clamping position of the horn, and the hook head wrench can clamp the 2 holes on the ultrasonic welding head. In the actual work, some employees use the pliers to load and unload the welding head, which is not correct. It is easy to hurt the surface of the horn or welding head. If the force is not well controlled, it is easy to break the screw or cause damage to the screw teeth. At present, ultrasonic welding machines on the market have a common law: when the direction of the horn is vertical downward, the counterclockwise direction is tight, the clockwise direction is loose, when installing the mold, the contact surface of the horn and the mold must be wiped clean with alcohol, be sure to tighten, otherwise it will cause the mold loose in the process of use, Causes the ultrasonic generator current to be large and burns out the accessories or screw slip teeth. To keep in mind.