Ultrasonic cutting machine is a kind of equipment that uses wave energy to cut. Its characteristic is that cutting without cutting edge. In other words, we don't need traditional advantages. Traditionally, cutting tools use sharp edges to suppress the material to be cut. When the pressure is concentrated on the edge, the pressure is very large and exceeds the shear strength of the material being cut. When the molecular bonds of a substance are pulled apart, it is severed. Since the material is pulled apart by strong pressure, the cutting edge of the tool should be very sharp, and the material itself should bear greater pressure. The cutting effect of soft elastic materials is not good, and the cutting of viscous materials is more difficult.
The basic composition of an ultrasonic cutting machine is an ultrasonic sensor, a horn, a cutting knife (knife head) and a driving force. The ultrasonic drive power converts municipal power into high-frequency and high-voltage alternating current and transmits it to the ultrasonic sensor. The ultrasonic sensor is actually equivalent to an energy conversion device, which can convert the input electrical energy into mechanical energy, which is ultrasonic. Its performance is the longitudinal reciprocating movement of the sensor. The frequency of the telescopic movement 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 amplify the output amplitude of the sensor. On the one hand, the tool (cutter head) further amplifies the amplitude and focuses on the ultrasound. On the other hand, the ultrasonic output uses a cutting edge similar to the cutting tool to concentrate the ultrasonic energy on the cutting part of the material to be cut. Under the action of huge ultrasonic energy, the part instantly softens and melts, and the intensity 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 conventional cutting, the basic components required are a cutting knife and a cutting board. The ultrasonic cutting machine has two basic structures. According to the different positions of ultrasonic, we can also divide it into ultrasonic knife and ultrasonic anvil knife.
An ultrasonic cutter is a cutter that directly loads ultrasonic energy onto the cutter, and it is a cutter with ultrasonic waves. When cutting the material, the material is softened and melted mainly by ultrasonic waves. The cutting edge of the tool only plays the role of welding seam positioning, ultrasonic energy output and material separation. This cutting method is suitable for cutting materials that are thick, thick, and long, which are not easy to set up. Such as raw rubber slices, cutting tubes, frozen meat, candy, chocolate slices, printed circuit boards, hand-held cutting machines, etc.
The basic structure of the ultrasonic anvil cutting machine is similar to that of the ultrasonic knife cutting machine, except that the output part of the ultrasonic wave is not a knife, but a standard ultrasonic plane mold. Here, the mold is equivalent to the anvil. It is just an anvil for ultrasonic vibration. The cutting knife is still traditional and in any shape, but it reduces the requirement for sharp edges and greatly extends the service life of the cutting knife.