Electronic component mounting system having a vacuum suction head with a magnetic sensor for locating an electronic component with a magnet mark

Claim 1

An electronic component mounting system for locating and mounting electronic components on a printed circuit board (10) comprising: a vacuum fastener (4) for suction of an electronic component, which component is carried on a tape; a carrier (3) which carries said vacuum fastener (4) and moves between a picking up position and a mounting position; an image sensor responsive to the image of said electronic component after being sucked and as being held by said vacuum fastener (4) to provide a location signal responsive to location of the component; an image signal processor (7) for providing an error signal according to the comparison of said location signal to a standard signal representing a standard location for the component; an NC numerical control device (8) connected to said signal processor for providing a correction signal for correcting the relative relation between the printed circuit board (10) and the electronic component (2); an XY table controlled in its XY movement by said NC control device and carrying the printed circuit board (10) on which an electronic component is mounted, the relative position between said electronic component and said printed circuit board being adjusted according to outputs of said NC control device (8); and said electronic component having a magnetic mark at a predetermined location, said vacuum fastener having a magnetic sensor so that the electronic component is picked by the vacuum fastener at a predetermined location by coinciding the magnetic sensor with the magnetic mark for preprocessing to locate the electronic component.