Five advantages of ultrasonic cutting knife
Ultrasonic cutting knife, also known as ultrasonic cutting machine, is an ultrasonic equipment specially used for cutting, and it is one of the important categories of ultrasonic applications. The cutting knife uses ultrasonic energy to heat and melt the material to be cut locally, thereby achieving the purpose of cutting the material. Its characteristic is that it does not use a traditional cutting edge.
The principle of ultrasonic cutting is completely different from traditional cutting. Ultrasonic cutting uses the energy of ultrasonic waves 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 a sharp edge, nor does it require a lot of pressure, and will not cause chipping or damage to the material being cut. At the same time, because the cutting knife is vibrating ultrasonically, the frictional resistance is particularly small, and the material to be cut is not easy to stick to the blade.
Advantages of ultrasonic cutting knife:
1. Wide range: all kinds of textile materials can be ultrasonically cut. For example, natural fibers, synthetic fibers, woven fabrics, non-woven fabrics and knitted fabrics including aromatic polyphthalamide fibers, carbon fibers and glass fibers can all be ultrasonically cut.
2. No pollution: When ultrasonic cutting, the equipment is only heated to about 50 ℃, no smoke or odor will be generated, and the danger of injury and fire during cutting is also eliminated.
3. High reliability: When the ultrasonic generator is working, it will produce electromagnetic vibration of 20-40KHZ, and it will be transformed into mechanical vibration through piezoelectric ceramics. This oscillation is transmitted to the ultrasonic cutting knife and the material to be cut, and generates heat from the inside, and then mechanically divides the material. Contrary to high-temperature cutting, ultrasonic uses mainly mechanical energy instead of thermal energy, which has little wear on the ultrasonic cutting knife.
4. The cutting is neat: the cutting edge is very neat, and the warp and weft of the fabric will not shift or fall out. Cotton and viscose fabrics can be cut at speeds up to 10 m/min on stenters and cylindrical fabric slitting machines. When non-thermoplastic materials are cut, the edges of the fibers will be fused after processing or entering the ultrasonic working area.
5. Traditional comparison: Compared with cold cutting, when the thermoplastic material is cut using ultrasonic cutting, the edges of the cut will fuse together. Compared with thermal cutting, the use of ultrasonic cutting can make the edges of the cut fabric very soft, avoiding melt shrinkage and excessive edge thickening. Since the ultrasonic is heated from the inside of the fabric rather than from the outside, it will not make the fabric yellow.
