Electronic component mounting method

• US 7,721,424 B2
• Filed: 01/27/2006
• Issued: 05/25/2010
• Est. Priority Date: 01/28/2005
• Status: Active Grant

• Current Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Original Assignee: Hitachi High-Tech Instruments Co., Ltd. (Hitachi, Ltd.)
• Inventors: Fukushima, Yoshiharu, Kameda, Makio, Seto, Katsuyuki, Fukushima, Hideaki, Aoki, Akira
• Primary Examiner(s): Nguyen; Donghai D.
• Application Number:
  US11/340,866
• Publication Number:
  US 20060185162A1
• Time in Patent Office: 1,579 Days
• Field of Search: 29832-834, 297/09, 297/21, 297/39, 297/40, 297/43, 356/621, 356/638
• US Class Current: 29/834
• CPC Class Codes: H05K 13/0452 Mounting machines or lines comprising a plurality of tools for guiding different components to the same mounting place H05K13/0406, H05K13/041 take precedence
• CPC Class Codes: H05K 13/0853 Determination of transport trajectories inside mounting machines
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.
• CPC Class Codes: Y10T 29/49131 by utilizing optical sighting device
• CPC Class Codes: Y10T 29/49133 with component orienting
• CPC Class Codes: Y10T 29/53039 with control means energized in response to activator stimulated by condition sensor
• CPC Class Codes: Y10T 29/53178 Chip component
• CPC Class Codes: Y10T 29/53191 Means to apply vacuum directly to position or hold work part

Abstract

The invention is directed to prevention of interference of an operation of mounting proper electronic components and improvement of usability without reduction of a manufacturing speed of printed boards. Suction states of electronic components held by suction by suction nozzles are detected by a line sensor unit. When the detection result shows that there is an improper electronic component, the improper electronic component is disposed of, and after the disposal a component recognition camera takes images of electronic components judged proper as a result of the detection and a recognition processing device performs a recognition process. When the recognition result shows that there is an improper electronic component, the improper electronic component is disposed of, and after the disposal only electronic components judged proper as a result of the recognition are mounted on a printed board.

Claims

1. A method of mounting an electronic component, comprising:

providing a stationary component recognition camera;

picking up a plurality of electronic components from a component feeding unit by suction using a plurality of suction nozzles of a mounting head;

moving the mounting head having the electronic components held from the component feeding unit the suction nozzles by the stationary component recognition camera;

taking images of the electronic components held by the suction nozzles using the stationary component recognition camera;

performing a recognition processing on the images taken by the stationary component recognition camera;

releasing one of the electronic components that is judged improper as a result of the recognition processing; and

mounting on a printed board the electronic components that are judged proper as the result of the recognition processing after the releasing of the improper electronic component,

wherein the mounting of the electronic components that are judged proper is performed after the releasing of the electronic component judged improper without repeating, before the mounting of the electronic components, the step of picking up of electronic components to supplement the released electronic component.