One-pieces Ultrasonic Cutting Tools  Strong Tensile Strength No Wire Loss

Introduction

Ultrasonic cutting machineuses ultrasonic energy for cutting processing. There is no need for a traditional cutting edge. Traditional cutting uses a knife with a sharp edge to press the material to be cut. This pressure is concentrated at the cutting edge, and the pressure is very large, exceeding the shear strength of the material being cut, and the molecular binding of the material is pulled apart and cut off. Because the material is pulled apart by strong pressure, the cutting edge of the cutting tool should be very sharp, and the material itself must withstand relatively large pressure. It is not good for cutting soft and elastic materials, and it is more difficult for viscous materials.Ultrasonic cutting also has a great advantage, that is, it can melt the cutting material while cutting. The cutting area is perfectly sealed to prevent loosening of the tissue of the material being cut (such as flashing of textile materials).So ultrasonic cutting is widly used in fabric, textile,Home textiles ,Non-woven,seat cushion, sound insulation cotton.

Parameter

Viscous materials such as rubber, solid chemical products, printed circuit boards, etc. are prone to sticky knives when cutting. Elastic materials such as frozen meat, candy, chocolate, fruits, cakes, etc. are prone to deformation during cutting and crush the surface of the material. Ultrasonic cutting tools use ultrasonic energy to heat and melt the material to be cut to achieve the purpose of cutting. Ultrasonic cutting does not require sharp cutting edges and does not require great pressure to easily cut the material without causing the material to be cut. Edge chipping, breakage and dregs. At the same time, because the knife surface is vibrating ultrasonically, the friction resistance is particularly small, and the material to be cut is not easy to stick to the blade, which can solve the above sticking problem. And while cutting, the cutting edge produces fusion to the cutting part, and the cutting surface is perfectly sealed while cutting, so as to avoid problems such as material flash. The traditional ultrasonic cutting tool is mainly composed of transducer, horn and blade. Fig. 1 is a schematic diagram of the blade structure in an existing ultrasonic cutting tool. As shown in Fig. 1, in order to make the blade vibrate uniformly and maintain a large amplitude at the cutting edge, the blade is designed into a wedge-shaped structure with upper and lower sides. However, the blade of this wedge-shaped structure should not be too long. If the blade is too long, the amplitude of the tip of the blade at both ends of the blade may be large while the amplitude of the middle of the blade is small, which makes the middle of the blade lose its function. Therefore, the existing ultrasonic cutting tool The cutting edge of the middle blade is usually designed to be short and cannot adapt to a variety of working conditions. The vibration shape of the blade with this wedge structure is longitudinal expansion and contraction. Although this vibration shape can obtain the maximum amplitude at the blade, there will be an obvious band-shaped nodal surface somewhere in the middle of the blade. The smaller the amplitude, the sticking phenomenon still exists near the blade pitch when cutting viscous materials As shown in Figure 2a, due to the existence of the blade wedge angle, it is difficult to ensure the same angle at both ends of the cut surface when cutting soft materials such as rubber. As shown in Figure 2b, when a wedge blade is used to cut thicker materials with a smaller cutting angle, when cutting to a deeper depth, the upper end of the wedge blade will interfere with the material and prevent the blade from continuing to cut. In order to make this wedge-shaped blade can be used continuously, it must be made of materials with better acoustic properties such as titanium alloy. However, titanium alloy is a typical difficult-to-process material. It is very difficult to process titanium alloy into a fixed wedge angle, and its processing cost and raw material cost are also high. In addition, considering the mechanical properties, the hardness of titanium alloy is not enough to cut harder materials, so the existing traditional ultrasonic cutting tool blades have a narrow processing range.