The first factor that causes the ultrasonic welding to be weak-the air pressure problem

   Many ultrasonic welding machine manufacturers are troubled by the unstable air pressure in the customer's factory workshop after selling the machine. Instability of air pressure is also an important factor leading to weak ultrasonic welding. First, the new machine will go through strict internal testing before leaving the factory, and it will be shipped normally after it is determined that there is no problem. However, as soon as the machine is used by the customer, there will be various problems of weak welding, because before the purchase of the machine, samples are usually taken over to test the machine, and the machine will be shipped only after it is confirmed that the machine has no problems with the proofing test. So why does the problem of weak welding appear when we arrive at the customer? The ultrasonic generator has been tested and debugged repeatedly and no problem is found. So where is the problem?

After a long period of observation, it turned out that it was caused by the unstable air pressure in the workshop of the customer. Only when the machine was off work, the machine was used normally and there was no weak welding phenomenon. The problem reappeared during normal work, so we judged it to be The unstable air pressure affects the normal welding of the ultrasonic welding machine. Because many equipments that use air during normal work are working at the same time and the air path is too far, the pressure will decrease accordingly. The solution, if it is a large machine welding smaller products, you can try to replace a smaller cylinder, or add an independent air compressor to supply air to the ultrasonic plastic welding machine.

   The third factor leading to weak ultrasonic welding-insufficient ultrasonic power

    Insufficient ultrasonic generator power is also a factor that leads to weak welding. Considering that many factories choose cheap machines when purchasing machines, one thing that is ignored is the processing and use of other products in the later stage of the machine. The ultrasonic power is not large enough and the area of welding products exceeds If the welding range is exceeded, the welding will be weak. The solution is to buy a plastic welding machine with high power as much as possible to ensure subsequent use.

    The fourth factor leading to weak ultrasonic welding-the problem of the plastic material itself

    There are many plastic materials that can be welded by ultrasonic welding. If other materials are added to the material that can be welded by ultrasonic welding machine, it will also affect the welding fastness. For example, adding glass fiber to PC will affect the whole welding fastness. The solution is to use a single thermoplastic material. The above are the common problems of weak welding of ultrasonic plastic welding machines, but there are other problems caused by them. These are relatively invisible problems, and it is difficult to find if you don't pay attention.

    The second factor that causes the ultrasonic welding to be weak-the frame is not precise enough

  The ultrasonic welding machine seems to be a device with no difficulty except the ultrasonic system. In fact, this is a wrong view. Although the ultrasonic generator is the core part of the ultrasonic welding machine, in addition to the generator part, there is also the plastic welding machine frame. If the design of a frame is not reasonable enough and the processing is not precise enough, it is likely to directly affect the welding pass rate of your product during use. If the machine design is unreasonable, it will also affect the welding of the product. For fastness, and if the processing is not precise and rough, it is impossible to find the best balance position of the mold when changing the mold, so it may also cause the welding product to fail to be welded. The solution is to directly replace a better rack, try to do a good job of buying before purchasing the machine, and understand the relevant information of the equipment.