The Principle of Ultrasonic Sewing Machine

The working principle of ultrasonic seamless sewing machine is that the ultrasonic driving power supply converts the mains power into high-frequency and high-voltage AC power of 35HZ, which is transmitted to the ultrasonic transducer. Ultrasonic transducers are actually equivalent to energy conversion devices that can convert input electrical energy into mechanical energy, namely ultrasonic waves. Its performance is that the transducer performs forward and backward expansion and contraction movements in the longitudinal direction. The frequency of the telescopic motion is equal to the frequency of the AC current provided by the driving power supply, which is 35kHz, and the displacement of the telescopic motion is about a few micrometers. The function of the amplitude lever is to fix the entire ultrasonic vibration system and amplify the output amplitude of the transducer, which is transmitted to the welding head. On the one hand, the amplitude lever further amplifies the amplitude, and on the other hand, it converts longitudinal stretching vibration into radial stretching vibration. As long as the manufacturer of the whole machine matches the ultrasonic core components with the frame, pressure wheel, auxiliary structure, and control components, it is a complete ultrasonic cutting and sewing machine.

The fabric is heated and melted under the action of ultrasound, and two or more layers of fabric are bonded together to achieve the purpose of sewing the fabric. If the pressure is rotated into a blade wheel, a perfect cutting and edge sealing machine is formed, which cuts the fabric and seals the cut edges 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. Represents the development direction of ultrasonic cutting sewing machines. It is precisely because the ultrasonic seamless sewing machine movement has many advantages that there are high technical requirements for the design calculation, material selection, structural design, processing and manufacturing, testing and adjustment of the ultrasonic vibration system. So far, apart from our company, no other unit in China has truly engaged in the research and development of this product.