What is the principle of ultrasonic welding of mask machine?
The principle of multi-layer fusion of non-woven chemical fiber fabrics is to use the high-frequency friction between the contact surfaces to rapidly generate heat between molecules. Under the action of a certain pressure, many woven fabrics or fabrics or PVC films can be fused together. . The frequencies usually used for non-woven welding processing are 20KHz and 15KHz. . Ultrasonic energy penetrates the material to fuse it together. Generally, it is necessary to make tooth-like, mesh-like and strip-like patterns on the welding head, to form patterns on the surface of the fused product, and to fuse the multi-layer fabrics. Disposable flat masks and N95 masks are manufactured in this way, and the ear straps of the masks are also spot-welded with ultrasonic waves. Want to know more about mask machine and ultrasonic more knowledge and debugging video tutorial (flat mask machine and N95 mask machine).
Ultrasonic welding systems are generally used in automatic equipment, and cooperate with automatic devices to complete continuous welding or reciprocating welding. Ultrasonic welding systems generally include: ultrasonic generators, ultrasonic transducers, ultrasonic welding molds (welding heads), and related accessories, such as flanges for fixing and supporting transducers, connecting cables, etc.
Ultrasonic generator, also known as ultrasonic power supply and ultrasonic electric box, is an electronic circuit device that can provide high-frequency current, and can generate ultrasonic vibration energy with ultrasonic transducer. The principle of ultrasonic transducer is to use the inverse effect of piezoelectric ceramics and add appropriate high-frequency current to the transducer to generate mechanical vibration of the same frequency. Ultrasonic generator, ultrasonic transducer and ultrasonic welding head form a complete set of ultrasonic vibration device. The three components of the ultrasonic vibration device must reach resonance before they can work properly. Improper installation and connection, improper resonance frequency, and improper adjustment will cause system abnormalities, and in severe cases will damage the system. Want to know more about mask machine and ultrasonic more knowledge and debugging video tutorial (flat mask machine and N95 mask machine).
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