Patent ID: 7032303
Filing Date: 2006-04-25
Classification: H05K,Y10T

Abstract:
1. A method of sequentially mounting a plurality of electric components on a printed-wiring board, the method comprising the steps of: supporting, with a rotatable body rotatably supported by a movable member which is movable to an arbitrary position on a movement plane perpendicular to an axis line of the rotatable body, a plurality of suction nozzles such that the suction nozzles are provided along a circle whose center is located on the axis line of the rotatable body and such that each of the suction nozzles is not rotatable relative to the rotatable body and is movable relative to the body in a direction parallel to the axis line of the body, supporting, with a board supporting device, the printed-wiring board such that the printed-wiring board extends parallel to the movement plane, sucking and holding the electric components with respective ends of the suction nozzles supported by the rotatable body, simultaneously taking, with an image taking device, respective images of the electric components held by the suction nozzles, so as to obtain a taken image of an electric component held by each of the suction nozzles, processing the taken image of the electric component held by said each of the suction nozzles, to determine at least one position error of the electric component held by said each suction nozzle, sequentially positioning, while owing to a combination of the rotation of the rotatable body and the movement of the movable member and eliminating said at least one position error, the respective electric components sucked and held by the suction nozzles, at respective positions opposed to respective predetermined locations on the printed-wiring board supported by the board supporting device, such that at least two of the plurality of electric components thus positioned take different rotation positions, rotating, independently from the rotation of the rotatable body, an engaging member common to the plurality of suction nozzles, to a position corresponding to one of the suction nozzles that holds one of the plurality of electric components that is to be mounted next, and moving, in said direction parallel to the axis line of the rotatable body, the engaging member to engage said one suction nozzle, so that said one suction nozzle is moved toward the board supporting device and the electric component held by said one suction nozzle is mounted on the printed-wiring board.