Robot cell

• manual insertion of the injection moulded parts into the format unit
• manual positioning of the fleece and clamping down
• The ultrasonic welding process starts automatically when the safety circuit is closed.
• manual removal after the welding process

Ultrasonic welding is a process for connecting thermoplastic synthetics. The ultrasonic frequency is generated by a high-frequency generator. This converts the mains voltage and the operating frequency. The high-frequency current is transmitted to an ultrasonic transducer (the so called piezzo converter). The piezzo converter converts the electrical vibrations into high-frequency mechanical vibrations. The vibrations are transferred to the workpiece (fleece/injection moulded part) under pressure, whereby the plastic is plasticised by molecular and interfacial friction.