Method of mounting electronic component

• US 8,186,047 B2
• Filed: 05/01/2009
• Issued: 05/29/2012
• 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: Aoki, Akira, Kameda, Makio, Seto, Katsuyuki, Fukushima, Hideaki, Fukushima, Yoshihara
• Primary Examiner(s): Nguyen, Donghai D.
• Application Number:
  US12/434,500
• Publication Number:
  US 20090211086A1
• Time in Patent Office: 1,124 Days
• Field of Search: 356/621, 356/638, 29832-834, 297/09, 297/21
• US Class Current: 29/833
• 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:

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

detecting postures of the electronic components held by the suction nozzles of the mounting head;

releasing one of the electronic components that is held by one of the suction nozzles of the mounting head and judged improper as a result of the detecting;

taking, after the releasing of said one of the electronic components held by one of the suction nozzles of the mounting head, images of electronic components that are held by the suction nozzles of the mounting head and judged proper as the result of the detecting using a component recognition camera;

performing a recognition processing to the images taken by the component recognition camera;

releasing another of the electronic components that is held by another of the suction nozzles of the mounting head and judged improper as a result of the recognition processing;

mounting on a printed board electronic components that are held by the suction nozzles of the mounting head and judged proper as the result of the recognition processing after the releasing of said another of the improper electronic components held by another of the suction nozzles of the mounting head; and

after the mounting the electronic components, repeating the steps of the picking up of the electronic components, the detecting of the postures, the taking of the images and the performing of the recognition, wherein the electronic components judged proper by the detecting and the recognition processing are mounted on the printed board for a second time and the electronic components judged improper by the detecting or the recognition processing are released after the second mounting.