Ultrasonic Welding Clamp Force

Ultrasonic welding allows two pieces of material (e.g. plastic) to be welded together using high frequency vibrations. The result is a clean welding process, producing uniform and tight welds. This clean welding process is ideal for medical equipment, toys, semiconductors and consumer electronics. One of the keys to a clean weld is the proper application of clamping force. Too little force results in an incomplete weld, too much force results in deformed products. Incorporating an in-line load cell with the welding system allows the ultrasonic welder to deliver the correct amount of contact force to each part.

How it works :

An LCB/LCF series load cell is mounted between the converter and the actuator that move the assembly.
A damper is placed between the converter and the LCB/LCF series load cell to minimize the effects of high speed vibration from the load cell.
Once the parts are clamped during assembly, the force transducer measures the force of the weld and how well the force is maintained.
The IAA and IDA100 amplify and transmit the force signal to the PLC for clamping force control.
In addition, the IDA100 allows the force transducer output to be recorded and monitored with SENSIT™ software.
The data generated with SENSIT™ can then be used of traceability operations.