The portable ultrasonic fabric cutting knife loads ultrasonic energy directly onto the cutting knife, and the cutting knife becomes a cutting knife with ultrasonic waves. When cutting the material, the material is softened and melted mainly by ultrasonic energy, and the blade of the cutter acts as a positioning slit, outputting ultrasonic energy and separating the material.
Ultrasonic cutting knife, also known as ultrasonic cutting machine, is a kind of ultrasonic equipment specially used for cutting, and it is one of the important categories of ultrasonic applications. The principle of ultrasonic cutting is completely different from traditional cutting. Ultrasonic cutting uses the energy of an ultrasonic transducer to heat and melt a part of the material to be cut, so as to achieve the purpose of cutting the material. Therefore, ultrasonic cutting does not require sharp edges, nor does it require great pressure, and does not cause chipping or cracking of the material being cut. At the same time, since the cutting knife is ultrasonically vibrated, the frictional resistance is very small, and the material to be cut is not easy to adhere to the blade. This is especially effective for cutting viscous and elastic materials, frozen materials (such as food, rubber, etc.) or objects that are inconvenient to apply pressure.
Another important advantage of ultrasonic cutting is that it has fusion in the cut part during cutting, and the cut part is completely sealed without causing flash of the textile material. The use of ultrasonic cutting knife can also be expanded, such as digging holes, shoveling, scraping paint, carving and so on.
The basic composition of an ultrasonic cutting knife is an ultrasonic transducer, a horn, a knife head (knife body) and a driving power supply. The ultrasonic drive power converts the mains power into high-frequency and high-voltage alternating current and outputs it to the ultrasonic transducer. The ultrasonic transducer is actually equivalent to an energy conversion device, which can convert the input electrical energy into mechanical energy, namely ultrasonic waves. Its performance is that the transducer stretches back and forth in the longitudinal direction. The frequency of the telescopic movement is equal to the frequency of the high-frequency alternating current provided by the driving power supply. The role of the horn is to fix the entire ultrasonic vibration system, and the other is to adjust the output amplitude of the transducer. On the one hand, the tool head (tool body) amplifies the amplitude and focuses the ultrasound. On the other hand, it outputs ultrasonic waves and uses a similar cutting edge of the cutter to concentrate the ultrasonic energy into the cutting part of the material to be cut. Under the action of huge ultrasonic energy, the part immediately softens and melts, and its strength is greatly reduced. At this point, as long as a small cutting force is applied, the purpose of cutting can be achieved.