| 摘要 |
Ultrasound welding of thin-walled pipes with metal foil, fig. 1, concerns a method to join both components without changing the pipe's (1) circular profile or the structure of the material it consists of.Through use of ultrasound vibrations, the material's molecules are caused to engage with one another. So that the pipe (1) retains its circular profile, it is positioned and fixed between two horizontally pinching clamps (10) which in their upper peripheral edge have tracks in which the pipe (1) runs and is enclosed, except for slit A between the upper periphery of the clamps. Slit A exposes part of the pipe against which surface the metal foil (2) is pressed by a so-called sonotrode from which ultrasound vibrations are transferred to the welding zone. Through continual feeding through the welding unit both materials are joined together and controlled by automatic detection of correct sonotrode pressure and by a feed rate that is adapted to the material and the ultrasound frequency that has been set.<IMAGE> |
