Low Frequency Ultrasonic Welding Transducer For Ultrasonic Hair Curler Welding Equipment

Low Frequency Ultrasonic Welding Transducer For Ultrasonic Hair Curler Welding Equipment

The ultrasonic transducer is the core component of a welding machine, mainly composed of two parts: a vibrator and an amplitude modulator. Its function is to convert electrical energy into mechanical energy through the simple harmonic vibration of the vibrator itself and drive the entire transducer to resonate under the excitation of electrical signals. The transducer oscillator adopts a sandwich structure, consisting of pre-stressed bolts that clamp the front and rear drive blocks, piezoelectric chips, and electrode plates. The front drive block and amplitude modulator are assembled through connecting screws.

When a voltage is applied to the two poles of a piezoelectric chip, due to the inverse piezoelectric effect of the piezoelectric ceramic material, the piezoelectric chip undergoes deformation in the thickness direction (i.e. the axial direction of the transducer), which is repeatedly stretched and compressed under the action of alternating current to convert electrical energy into mechanical energy. Under the action of alternating current, the oscillator undergoes periodic stretching and compression deformation at the resonant frequency, which also drives the amplitude modulator to resonate. In this way, the oscillator and the amplitude modulator each become a simple harmonic vibration unit. The oscillator is excited by the electrical signal, and then the amplitude modulator is excited, causing both to resonate. While each resonant unit outputs axial amplitude, it also undergoes periodic deformation in the radial direction. At both ends of the unit, the axial deformation is maximum, while the radial deformation is minimum, while the position of the intermediate node is opposite. The structural gain of the resonant unit is directly proportional to the mass ratio at both ends of the node. The amplitude generated by the ultrasonic transducer depends not only on the structural gains of the oscillator and amplitude modulator, but also on the applied voltage. The output amplitude affects the output power of the ultrasonic transducer. The larger the amplitude, the higher the voltage, and the higher the output power.

Low Frequency Ultrasonic Welding Transducer For Ultrasonic Hair Curler Welding Equipment

标签：Low Frequency Ultrasonic Welding Transducer, Ultrasonic Welding Transducer For Ultrasonic Hair Curler Welding Equipment