40khz Piezoelectric Ultrasonic Spot Welding Transducer For Ultrasonic Plastic Welding Machine

40khz Piezoelectric Ultrasonic Spot Welding Transducer For Ultrasonic Plastic Welding Machine

The principle of Ultrasonic welding transducer is similar to that of cleaning the transducer. It also applies prestress to offset the expansion stress of piezoelectric ceramics to achieve high frequency vibration with large amplitude. Due to the high instantaneous power required for welding transducers, they have high requirements for materials and processes, and are classified as high-power acoustic energy transducers. Usually, a high-power and large-amplitude vibration system is composed of a horn and a working head to complete ultrasonic welding of materials such as plastic and metal.

Ultrasonic welding is to generate high-frequency friction and heat on the contact gap surface of the welded object under pressure through the ultrasonic vibration generated by the transducer, so as to achieve the purpose of thermal fusion welding.

The Ultrasonic welding transducer is a high-power transducer working in gaps or pulses, and its power is generally calculated by the instantaneous peak power.

Product installation matters

Precautions for installing transducers from our company:

Select appropriate materials and adjust the hardness process to process and produce the variable amplitude pole and working head.
When installing the amplitude converter or working head, it is necessary to pay attention to frequency matching and apply sound conductive adhesive at the joint.
Use solvents such as acetone to clean the joined surface during installation
Establish an impedance control process for the bonding process to reduce the bonding impedance of the oscillator and improve its electro-acoustic conversion efficiency.
Pay attention to improving the insulation measures of the oscillator electrode after installation.

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