Pneumatic riveting machine

automatic

The ultrasonic riveting makes possible an interlocking bonding of two thermoplastics or of thermoplastics with dissimilar materials, e. g. thermoset materials or metals. In this process the sonotrode serves as a re-forming tool. It determines the forming of the riveting pin. During the holding time (cooling phase) the sonotrode serves also as fixation stamp, thus the melted material cools down under pressure. solid and seamless fitting joint by overcoming the return elasticity of the plastic material short process times low-stress bondings quick thermal drain via the cold sonotrode; the sonotrode simultaneously serves as fixation stamp also deeper areas of a plastic component can be reached with the riveting sonotrodes reproducible bolding technology; dissimilar materials can be riveted use of basic sonotrodes with screw-in riveting sonotrodes; thus several riveting steps are possible with one head no connection elements Disadvantages of ultrasonic riveting: Long process times and short cycle sequences lead to warming up of the riveting sonotrode. Here the sonotrode tip should be ventilated. Electronic components are very sensitive against ultrasonic waves. It can lead to destruction of the elements. If the parts to be riveted have thin walls, the visible side can show shiny spots and imprints If the parts to be riveted have thin walls and also in case of hooks or clips the ultrasonic waves can lead to fissuring