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Principle of Ultrasonic Sewing rotary horn

The working principle of the ultrasonic seamless sewing machine is that the ultrasonic drive power supply converts the mains power into a 35HZ high-frequency high-voltage alternating current and transmits it to the ultrasonic transducer. The ultrasonic transducer is actually equivalent to an energy conversion device, which can convert the input electrical energy into mechanical energy, that is, ultrasonic waves. Its performance is that the transducer moves back and forth in the longitudinal direction. The frequency of the telescopic movement is equal to the frequency of the alternating current provided by the drive power supply, that is, 35kHZ, and the displacement of the telescopic movement is about several microns. The role of the horn is to fix the entire ultrasonic vibration system, and to amplify the output amplitude of the transducer and transmit it to the welding head. On the one hand, the horn further amplifies the amplitude, on the other hand, it converts the longitudinal stretching vibration into radial stretching vibration. The whole machine manufacturer only needs to match the ultrasonic core components with the frame, pressure rollers, auxiliary structures and control components, and it is a complete ultrasonic cutting and sewing machine.

The cloth is heated and melted under the action of ultrasonic waves, and two or more layers of cloth are bonded together to achieve the purpose of sewing cloth. If the pressure wheel is replaced with a knife wheel, a perfect cutting and edge banding machine is formed. The fabric is cut and the cut edge is sealed with hot melt. It has the characteristics of fast welding and cutting speed, high precision, beautiful weld seam, small size, low energy consumption, and no noise. It represents the development direction of ultrasonic cutting and sewing machines. It is precisely because of the many advantages of the ultrasonic seamless sewing machine core that there are high technical requirements for the design calculation, material selection, structural design, processing and manufacturing, detection and adjustment of the ultrasonic vibration system.

Flat view

The core technology of the ultrasonic seamless sewing system is to use the disc-shaped welding head for seam welding, which skillfully converts the longitudinal vibration of the transducer into the radial vibration of the disc-shaped welding head radiating 360° outward along the diameter direction. And different from the traditional lace machine, the traditional lace machine is generally composed of a flat tool head and a roller with a pattern. Since the tool head is stationary, it is easy to cause deformation and wrinkling of fabrics such as cloth during work, while seam welding Type seamless sewing equipment uses two discs to vibrate to sew fabrics, which solves this problem well. This not only greatly reduces the volume of the vibration system itself, but also greatly reduces the installation size, the whole machine is beautiful, the volume is reduced, and the weight is also greatly reduced.

Advantages of ultrasonic sewing machine

◆High stability: During ultrasonic seamless sewing, the rotation of welding roller and pressure roller is completely synchronized, there is no difference in speed and angle, and the fabric will not be stretched or deformed, and the precision is extremely high. Due to the hot-melt effect, no needles and threads are needed, the product has increased water resistance, is lighter in weight, and is easier to fold.

◆Synchronous welding and cutting: Ultrasonic seamless sewing equipment is not only suitable for continuous sewing, but also can cut textiles while welding to realize automatic edge banding.

◆No heat radiation: During ultrasonic sewing, the energy penetrates the material layer for welding without heat radiation. During the continuous sewing process, the heat will not be transferred to the product, which is especially beneficial for the packaging of heat-sensitive products.

◆Controllable welding: Welding roller and pressure roller pull the cloth, ultrasonic welding cloth. The size and embossing of the weld can be changed by changing the pressure roller, which is more flexible and convenient to use.

◆Wide range of uses: All thermoplastic (softened after heating) fabrics, special tapes, and films can be welded by ultrasonic seamless sewing equipment, and the rollers are made of hardened steel to prolong the service life.

ultrasonic sewing machine


Post time:May-06-2023

Post time: 05-06-2023
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