OPTICAL INSPECTION DEVICE FOR ON-LINE INSPECTION OF WELD OR SOLDERED SEAMS

摘要

The invention concerns an inspection device for the on-line inspection of components (1, 2) joined by weld or soldered seams (3). A guide unit (4-7) is used to keep the joined components (1, 2) at a constant distance from a sensor unit (8a, 8b) arranged on at least one side, preferably both, of the components (1, 2). This sensor unit (8a, 8b) is part of an inspection device which also includes an evaluation unit. At least one sensor unit (8a) includes a seam-searching unit (11), a 2-D sensor (12), a flaw recognition unit (13) and, generally, a 3-D seam profile sensor (14). Depending on the position of the seam (3) as determined by the seam searching unit (11), the 2-D seam sensor, flaw recognition unit (13) and 3-D seam profile sensor are positioned on the seam centre. In the event of a flaw being found by the 2-D sensor (12) with the aid of the evaluation unit, a flaw recognition unit is activated and analyses the flaw site using the light-section procedure. The 3-D seam profile sensor also uses the light-section procedure, combined with light-beam triangulation. The measurements thus obtained can be used for statistical process control (SPC) and/or for controlling both the soldering and welding process and the plant.