Praktische Beispiele aus dem industriellen Einsatz
KL-4-A1.1
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Color control of grooves on MDF plates Grooves on MDF plates should be color controlled. In case of failure the MDF background color can be seen. |
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Optical control of electrical contacts on a partly plastic covered stamping part In the error case the electrical contacts of a stamping part can be slightly covered with a thin plastic film. This should be detected with an optical system. |
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Differentiation between single-colored and two-colored cables During the coiling process of cables it has to be checked, whether monochromatic or dichromatic cables will be winded. At this the cables will be transported with a speed of 15 m/s and the cable will be turned 360° in 0.5 seconds around the axis. This turn around its axis can be used for color control. The smallest diameter of the cables is Ø 1.35 mm and the biggest diameter is around Ø 3mm. To produce a two-colored cable, a single-colored cable is used and a line with a width of approximately 0.8mm will be painted onto the cable, hence a white light spot with a diameter of Ø 0.7mm is used for color control. |
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Super fast detection of holographic reference marks in the printing industry One of the properties of holographic marks is the direct back reflection of collimated, parallel light under a certain angle. For most of the holographic marks this angle is equal to 45° and the collimated beam is directed perpendicular to the transport direction of the printed foil. This behavior of direct back reflection can be observed on transparent as well as on metalized holographic foils. |
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