Fundamental Investigations to increase the strength of thermoplastic-metal mixed joints by combining the mechanical joining and hot-melt adhesiv bonding

该提案的目的是开发一种新的工艺技术，用于连接不同和不相容的材料。目前，还没有一步(连接部件的一次夹紧)组合热熔粘接和紧固的机器可用。因此，有必要对该系统技术进行设计和实现。在该项目的第一阶段，购买了所需的伺服液压主轴驱动的紧固机和扭转式超声波焊接机。它们以前分别用于使用扭转超声波执行各自的连接过程、紧固和热熔接。有了这些独立的技术，已经取得了卓越的优势。在所要求的创建期内，现在将在一台机器上合并单一进程。为组合提供了带有同心模具的圆形喇叭。除了熔化热塑性材料(热熔胶)外，喇叭还用作紧固过程中的压紧装置。

The aim of the proposal is the development of a new process technology for joining dissimilar and incompatible materials. Currently, there are no machines for combined hot-melt bonding and clinching in one-step (one clamping of the joining components) available. It is necessary to design and build this system technology. In the first founding period of this project, the required clinching machine with servo-hydraulic spindle drive and a torsional ultrasonic-welding machine were purchased. These were used previously to perform the respective joining processes clinching and hot-melt bonding by using torsional ultrasonic separately. With these separated technologies excellent strengths were already achieved. During the requested founding period, the single processes will now be combined in one machine. A circular horn with a concentric die is provided for the combination. In addition to the melting of the thermoplastic material (hot-melt adhesive), the horn is also used as holding-down device for the clinching process.