Basic structure and characteristics of ultrasonic cutting machine
Ultrasonic cutting machine is a kind of equipment that uses wave energy for cutting processing. Its characteristic is that cutting without cutting edge. In other words, it does not require traditional edges. Traditional cutting is to press the cutting material with a sharp edge. This pressure is concentrated on the edge, and the pressure is great. If the shear strength of the material being cut is exceeded, the molecular bonds of the material will be pulled apart and severed. Since the material is pulled hard by the strong pressure, the cutting edge of the tool should be very sharp, and the material itself should withstand greater pressure. The cutting effect of soft elastic materials is not good, and the cutting of viscous materials is more difficult. The basic structure of an ultrasonic cutting machine is an ultrasonic transducer, a horn, a cutter (cutter head), and a driving power supply. The ultrasonic driving power supply converts the power into a high frequency and high voltage alternating current and transmits it to the ultrasonic transducer. In fact, the ultrasonic transducer is equivalent to an energy converter, which can convert the input electrical energy into mechanical energy, namely ultrasonic waves. Its expression is that the transducer moves back and forth in the longitudinal direction. The frequency of the stretching motion is equal to the frequency of the high frequency AC current provided by the driving power supply. The role of the horn is to fix the entire ultrasonic vibration system and to amplify the output amplitude of the transducer. On the one hand, the tool (cutter head) further amplifies the amplitude and focuses the ultrasound. On the other hand, the ultrasonic wave is output, and the ultrasonic energy is concentrated to the cutting part of the material to be cut using the cutting edge similar to the cutting knife. Under the action of huge ultrasonic energy, the part instantly softens and melts, and its strength is greatly reduced. At this time, as long as a small cutting force is applied, the purpose of cutting materials can be achieved. Similar to traditional cutting, the basic components required are the tool and anvil. The ultrasonic cutting machine also has two basic structures. According to different parts of ultrasonic application, it can be divided into ultrasonic cutting machine and ultrasonic anvil cutting machine. The ultrasonic cutting machine directly loads the ultrasonic energy onto the cutting machine, making the cutting machine an ultrasonic cutting machine. When cutting the material, the material is softened and melted by ultrasonic energy. The cutting edge of the tool only plays the role of weld positioning, ultrasonic energy output and material separation. This cutting method is suitable for cutting thick, thick and long materials, and it is not convenient to install anvils. Such as raw rubber cutting, pipe cutting, frozen meat, candy, chocolate cutting, printed circuit board, or handheld cutting machine. The basic structure of the ultrasonic cutting machine is similar to that of the ultrasonic cutting machine. Here, the mold is equivalent to the anvil. But this is an ultrasonic vibration anvil. The cutting knife is still traditional and can be of any shape, but the requirement for sharp cutting edge is reduced, and the life of the knife is greatly extended. In many cases, due to the effect of ultrasound, traditional cutting blades also allow great changes. *Usually, the cutter is converted into a cylindrical wheel with a raised pattern, usually called a flower wheel. The protruding part is equivalent to the cutting edge of the cutter, and the cut material passes between the flower wheel and the ultrasonic anvil. This combination can cut endless patterns with low cost and high efficiency. This cutting method is suitable for cutting all kinds of trademarks, clothing lace, cloth cutting, decorative bead cutting, natural fiber, synthetic fiber, non-woven fabric, artificial resin, paper, film cutting, slitting and other boards.