Device for welding a tube with an absorber strip in the manufacture of solar collectors comprises a drive wheel which feeds the tube to an ultrasound welding device having a rotating

摘要

Device for welding a tube with an absorber strip comprises a drive wheel (26) which feeds the tube to an ultrasound welding device having a rotating sonotrode having a plate-like head for conveying ultrasound welding energy to the tube. The tube is fed between two pressure elements (22, 24) rotating about parallel axes (28, 30) and the drive wheel rotating vertically to the parallel axes so that the tube can be transported along the sonotrode head. Preferred Features: The drive wheel has an exchangeable insert (34) and two half plates (36, 38) between which the tube runs.