All ultrasonic welding systems are composed of the same basic parts.
1. A press puts the two parts to be assembled under pressure like air cylinder.
2. A nest or anvil where the parts are placed upon enables the high frequency vibration to be directed to the interfaces.
3. An ultrasonic stack is composed of a converter or piezoelectric transducer, an optional booster and a Horn.
All the three elements of the stack are specifically tuned to resonate at the same exact ultrasonic frequency (Typically 20, 30, 35 or 40 kHz)
4.Converter: converts the electrical signal into a mechanical vibration.
5. A booster modifies the amplitude of the vibration. It is also used in standard systems to clamp the stack in the press.
6. A horn applies the mechanical vibration to the parts to be welded.
7. An electronic ultrasonic generator (US: Power supply) delivers a high power AC signal with frequency matching the resonance frequency of the stack.
8. A controller controls the movement of the press and the delivery of the ultrasonic energy.
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