If the ultrasonic welding effect is not strong, and welded parts are easily separated, you’d better to concern below reasons.
1. Plastic part material
Normally, before welding, we need to analyze plastic parts, like the material, size, welding line design and product welding requirements, and then select the suitable ultrasonic welding equipment of the product. Nowadays, in order to meet the requirements of hardness, fire resistance and other properties, other materials are added into the raw materials in the process, which also affect the welding fastness. For example, add glass fiber to PC, it will affect the firmness of the whole welding.
2. Choose a reasonable design of ultrasonic machine
Try to know more about the relevant information of the equipment before purchasing. Choose a more precise column frame to prevent the machine from tilting back. It seems like for an ultrasonic welding machine, only the ultrasonic generator is very important, but actually in addition to the ultrasonic generator, the welding machine frame is also very important for the welding effect. If the machine design is unreasonable, perhaps it will make the machine till back, and affect the welding fastness of the product. Because if the frame is not precise enough, it is difficult to adjust the balance position of the grinding tool when adjusting the mold, so the welding products may not be welded well.
3 Machine power is very important
Normally, after getting your product details, ultrasonic welder factory will recommend suitable frequency and power machine to you based on your requirement, and higher power, higher cost. When buying machines, many buyers do not care more about the machine properties and only see the appearance and price of products, so they will choose cheap machines. In this situation, they will Ignore the long-term usage of the machine. If the ultrasonic power is not enough, It will also lead to poor welding effect. It is very important to buy a suitable power machine.
4. The ultrasonic welding parameter setting
The Improper ultrasonic welding parameters, like delay time, welding time, pressure cooling time amplitude, and different kinds of triggered mode, welding modes, cylinder rise (fall) speed, also have a great impact on the welding effect and production efficiency. It is better to reset the welding parameters, like to increase the welding time.
5. Unstable air compressor
In many factory workshops, the production environment air pressure is unstable, during working hours, multiple equipment is used at the same time, which will lead to the phenomenon of air pressure instability. In this case, an independent air compressor can be added to supply pressure to the ultrasonic welding machine to ensure the stability of air pressure and ensure the good welding effect.
Post time: Mar-30-2022