1.Principle of ultrasonic cutting
The principle of ultrasonic cutting machine is completely different from that of traditional cutting. The principle of ultrasonic cutting is to convert 50/60hz current into electric energy of 20, 30 or 40KHz through ultrasonic generator. Is converted to mechanical vibrations of the same frequency, which are then transmitted to the cutting tool through an amplitude modulator device that alters the amplitude. The cutting knife transfers the vibration energy received to the cutting surface of the workpiece to be cut. In this area, the vibration energy is used to cut the rubber material by activating the rubber molecular energy and opening the molecular chain. This is especially effective for cutting viscous and elastic materials, frozen materials such as food, rubber, etc., or objects for which pressure is inconvenient. Ultrasonic cutting has a great advantage, it is in the cutting at the same time, there is a fusion role in the cutting part. The cutting area is perfectly hemmed to prevent loose organization of the material being cut (e.g., textile material flying edge). The use of ultrasonic cutting machine can also be expanded, such as digging holes, shoveling, scraping, carving, and so on.
2. the basic structure and characteristics of ultrasonic cutting
Ultrasonic cutting machine is a kind of equipment which USES wave energy for cutting processing. Its biggest characteristic is that cutting does not use cutting edge. In other words, not the traditional cutting edge. Traditional cutting USES a tool with a sharp edge to press the material to be cut. When this pressure is concentrated at the edge, the pressure is so great that it exceeds the shear strength of the material being cut, and the molecular bonds of the material are pulled apart and cut off. Because the material is forced to open by a strong pressure, so the cutting tool edge should be very sharp, the material itself has to withstand a lot of pressure. The cutting effect is not good for soft and elastic materials, but more difficult for viscous materials.
The basic structure is ultrasonic transducer, lug rod, cutter (tool head), driving power. The ultrasonic drive power supply converts the mains electricity into high-frequency high-voltage ac current, which is transferred to the ultrasonic transducer. Ultrasonic transducers are actually equivalent to an energy conversion device, which can convert the input electrical energy into mechanical energy, namely ultrasonic wave. Its manifestation is that the transducer moves back and forth in the longitudinal direction. The frequency of the telescopic motion is equal to the frequency of the high frequency AC current supplied by the driving power. The function of the lug is to fix the whole ultrasonic vibration system and to amplify the output amplitude of the transducer. The cutter (tool head) on the one hand further amplifies the amplitude and focuses the ultrasonic wave. On the other hand, the output of ultrasonic wave, using similar cutting edge of the cutting knife, will be concentrated ultrasonic energy input to the cutting part of the material to be cut. Under the action of huge ultrasonic energy, the part instantly softens and melts, and its strength drops greatly. At this point, as long as the application of a small cutting force, you can achieve the purpose of cutting materials. Similar to conventional cutting, the basic components required are the cutting knife and cutting board, and the ultrasonic cutting machine also has two basic structures.
According to the different position of ultrasonic applying, we may as well divide it into ultrasonic cutter and ultrasonic cutting board cutting machine. Ultrasonic cutting machine is directly to the ultrasonic energy on the cutting knife, the knife will become a knife with ultrasonic. When cutting materials, materials are mainly softened and melted by ultrasonic energy, the cutting edge of the knife only plays the role of slit positioning, ultrasonic energy output and material separation. This cutting method is suitable for thick, thick, long and other inconvenient cutting material of cutting board. Ultrasonic cutting machine suitable for: such as rubber mixing machine output of raw rubber cutting, pipe cutting, cold meat, candy, chocolate, cutting, printing circuit board, industry, jewelry industry, plastic products processing, food processing, printing industry, automobile industry of natural fiber split () can be divided into fine lines synthetic fiber dig cut) multilayer circuit thin artificial resin enclosed paint (suitable for large area) all types of paper and bottom film of origin (China) or hand held cutting machine, etc.