In the process of using the ultrasonic welding machine, you will inevitably encounter some failure phenomena. The following editor will lead you to understand the common failure phenomena of the ultrasonic welding machine and the solutions.

1. When the generator sends out an overload alarm, it should be checked according to the following steps:

1. Sometimes there may be situations where the no-load test is normal but not working properly. It may be that the internal sound energy components such as the welding head have changed, resulting in poor sound energy transmission. Here is a relatively simple judgment method: hand touch method. The amplitude of the normal working welding head or horn surface is very uniform when it is working, and the hand feels velvety and smooth. When the sound energy is not transmitted smoothly, there will be a feeling of bubbles or burrs on the hand. It is necessary to use the elimination method to eliminate problematic parts. The same situation can occur when the generator is abnormal, because normally, the input waveform of the transducer should be detected as a smooth sine wave. This phenomenon can also occur when there are spikes or abnormal waveforms on the sine wave. At this time, another pruned acoustic energy component can be used to replace it for identification.

2. Ultrasonic no-load test. If the working current is normal, it may be that the ultrasonic welding head has contacted objects that should not be touched or the parameter adjustment between the ultrasonic welding head and the welding seat has failed.

3. When the ultrasonic no-load test is abnormal, first observe whether the ultrasonic welding head has cracks and whether the installation is firm, and then remove the welding head and perform no-load test again to rule out whether there is a problem with the transducer + horn, step by step To exclude. After eliminating the possibility of failure of the transducer + horn, replace the new welding head for judgment.

2. Ultrasonic fever is abnormal

Ultrasonic welding heads will have a certain degree of heat during work, which is caused by the loss of mechanical energy of the material itself and the heat conduction of ultrasonic objects. The standard for judging whether the heat of the ultrasonic welding head is normal is that when there is no load (that is, without touching the workpiece), the ultrasonic wave should be continuously emitted for more than half an hour, and the temperature should not exceed 50-70℃. If the heat is experienced, it proves that the ultrasonic welding head is damaged or the material is not good. Qualified and need to be replaced.

3. The howling is abnormal when using ultrasonic products

When whistling occurs when the ultrasonic welding head is working, the following reasons should be analyzed:

1. Whether the welding head is in contact with objects that should not be in contact.

2. Whether the installation screws are loose

3. Whether the welding head has cracks