28KHZ 800W Handheld Ultrasonic Welding System Transducer For Plastic Ultrasonic Welder Machine

28KHZ 800W Handheld Ultrasonic Welding System Transducer For Plastic Ultrasonic Welder Machine

When the transducer of the ultrasonic welding machine applies voltage to the two poles of the piezoelectric chip, due to the reverse piezoelectric effect of the piezoelectric ceramic material, the piezoelectric chip will deform in the thickness direction (that is, the axial direction of the transducer). The deformation will stretch and compress repeatedly under the action of the 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 resonance unit is proportional to the mass ratio at both ends of the node. The amplitude generated by the ultrasonic transducer depends on the structural gain of the vibrator and the amplitude modulator, and also on the applied voltage. The output amplitude affects the output power of the ultrasonic transducer. The greater the amplitude, the higher the voltage, and the higher the output power.

Type	Full-length（mm）	Joint Bolt（mm）	Frequency（KHz）	Resonance Impedance（Ω）	Capacity（pF）	Input Power （W）
PU-UWT30500 P8	77	M10×1.5	30	5	5500	500
PU-UWT28200 P4	92.1	M10×1	28	20	3000	200
PU-UWT28100 P8	91	M8×1	28	25	2200	100
PU-UWT28250 P8	94	1/2-20 UNF	28	20	4000	250
PU-UWT35100 P8	71	M8×1	35	25	2200	100
PU-UWT38100 P8	66	M8×1.25	38	40	1200	100
PU-UWT38200 P4	65	M8×1	38	14	3300	200