| 摘要 |
A pickup head (2) for an automatic component assembly machine comprises several pipettes (1) placed next to each other for retaining components (3) at the sucking nozzles of the pipettes. An image of the component is captured by means of a video camera (7) and a lens system (5) to be used in an automatic evaluation (7') of the positions of the components on the pipettes (1). This image is composed by superposing successive images, which are captured of only one component (3) at a time. With a suitable movement of the pickup head (2) between the capturing of the successive images the reproductions of the individual components can be packed closely in the composed image. This results in that the lens system (5) can be adjusted for a larger magnification than if only one image had been captured of all the components (3) at the same time. Thereby a more accurate determination of the positions of the components can be achieved in the evaluation. |
