公开(公告)号：DE3313918A1

公开(公告)日：1983-10-27

申请号：DE3313918

申请日：1983-04-16

Applicant: BASF AG

Inventor： KROEBL KARL DIPL ING DR ,  SCHMELZE GERHARD DIPL ING ,  SCHOLL KARL HEINZ DIPL ING DR ,  HAGEN KARL DIPL ING DR

IPC: B06B1/02 ,  B29C65/00 ,  B29C65/08 ,  B29C27/08

Abstract: Process for open and closed loop control of the melting and bonding process during the jointing (welding, riveting, embedding, flanging, tamping) of mouldings of reinforced or unreinforced thermoplastics as well as during the embedding process of components of a non-thermoplastic nature in reinforced or unreinforced thermoplastic materials by means of ultrasonic energy, in which the electrical power converted in an ultrasonic converter during the jointing process is continually measured and its variation over time is compared with a preset empirically determined master function, the positive or negative deviations resulting from this comparison effecting the process of movement of the sonotrode in such a manner that differences between the preset master curve and the determined power curve become a minimum, by which means an optimum oscillation coupling between sonotrode and joint part is achieved and optimum, reproducible joint results are thus obtained.