Ultrasonic Welding Design For Plastics. Longitudinal vibrations in frequencies of 20 kHz 30 kHz and 35 kHz with tool amplitudes between 5 µm and 50 µm are introduced into the plastic materials under the action of force. Creating heat then melting.
When designing plastic parts to be assembled by ultrasonic welding engineers have several options. Through careful part design this vibratory mechanical energy is directed to limited points of contact between the two parts. In ultrasonic plastic welding a vibratory motion at the horn face amplitude is transferred to the part.
For example ultrasonic welding is used to make electrical connections on computer circuit boards and assemble electronic components such as transformers electric motors and capacitors.
The ultrasonic welding process converts electrical energy into mechanical vibrations. Ultrasonic Plastic Joining Technical Information PW-3 Part Design for Ultrasonic Welding Ultrasonic energy has been used to join thermo - plastics for over 35 years. One common reason is because its not feasible to mold the pieces as one unitary part. In ultrasonic plastic welding a vibratory motion at the horn face amplitude is transferred to the part.