What are the possible reasons for the unstable welding of ultrasonic welding machine?

First, the air pressure problem

After the sale of many ultrasonic welder manufacturers, due to the unstable air pressure in the customer's factory workshop, resulting in improper welding problems. Air pressure instability is also an important factor leading to ultrasonic welding failure. In the first place. New machines are subjected to rigorous internal tests before they go out. Make sure there is no problem before normal shipment. However, when the customer uses the machine. There will be all kinds of welding problems, because before buying the machine, it is usual to take samples to test the machine, to make sure that there are no problems with the machine proofing test before shipment. So, when we come into contact with customers, why do we have problems with poor welding? The ultrasonic generator has been tested and debugged repeatedly, and no problems have been found. So what's the problem?

After a long time of observation, it was found that the unstable air pressure in the customer's factory was the cause of the unstable air pressure. Only when the machine is in normal use at the end of the work, there will be no improper welding phenomenon. During normal working hours, the problem resurfaced. Therefore, we believe that the unstable air pressure affects the normal welding of ultrasonic welder. Because many of the devices that use natural gas will be operating at the same time, the pressure will be reduced when the gas is too far away. The solution is to replace larger cylinders with smaller ones, or to add a separate air compressor to provide air for the ultrasonic plastic welder.

Two, the rack production is not accurate enough

Ultrasonic welding machine seems to be a kind of equipment with no difficulties other than ultrasonic system. In fact, this is a wrong view. Although the ultrasonic generator is the core part of the ultrasonic welding machine, the frame of the plastic welding machine also has some problems except the ultrasonic generator parts. If the frame design is not reasonable, machining is not accurate, in the process of use is very likely. It directly affects the welding pass rate of your product. If the machine design is not reasonable, it will also affect the welding fastness of the product. In addition, if the machining is inaccurate and rough, the balance position of the mold cannot be found when the mold is replaced, which may also lead to the welding of the product. The solution is to directly replace the better rack, try to do a good job of purchasing before buying the machine, understand the relevant information of the equipment.

Three, ultrasonic power is insufficient

Insufficient power of ultrasonic generator is also a factor leading to poor welding. Considering that many Ir will choose the cheap machine when buying the machine however, it is ignored, other products are processed and used in the later stage of the machine, if the ultrasonic power is not large enough to weld the product in the welding field range will also lead to poor welding. The solution is to buy high-power plastic welding machine as far as possible to ensure subsequent use.

Four, the plastic material problem

There are many plastic materials that can be welded with ultrasound. If other materials are added to the material of ultrasonic welder, the welding fastness will also be affected. For example, adding glass fiber to a PC can affect the overall welding fastness. Solutions. Use a single - thermoplastic material. The above is the common improper welding problems of ultrasonic plastic welding machine, but other problems can also lead to, these are relatively invisible problems, do not pay attention to it is difficult to find.

Five, ultrasonic welding machine welding instability reasons

Products in welding production, the stability of ultrasonic welding machine is very important, stability is related to the welding rate of products up to standard, poor stability of ultrasonic welding out of the product defect rate is high, for the enterprise is very large loss.

Six, ultrasonic welding machine welding instability reasons are as follows:

1: ultrasonic transducer and ultrasonic electrical box of the two core configuration quality is not up to standard.

2: Check whether the voltage is stable.

3: Check whether the pressure is stable.

4: check whether the ultrasonic mold frequency deviates.

5. Material reasons, such as PC, PE, PVC, PA, POM, PMM, are not easy to weld, resulting in unstable effect of the welded products.

6: ultrasonic welding machine caused by failure, can be contacted with the ultrasonic welding machine manufacturer, detect the specific cause of failure.