The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 2001
Filed:
Mar. 05, 1999
Kazuo Arikado, Fukuoka, JP;
Teruaki Kasai, Fukuoka, JP;
Shinji Sasaguri, Fukuoka, JP;
Norifumi Eguchi, Saga, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a mounting apparatus for mounting conductive ball where a conductive ball,is picked up by vacuum to a suction hole,formed in the bottom of a suction head,for mounting on a workpiece, a reference wave form that represents the amount of light detected at a light detector,when a suction head,is sucking a conductive ball,rightly in the normal state is compared with a wave form detected at the light detector,when actually mounting the conductive ball; also a reference wave form detected at the light detector,when there is no conductive ball,at all on the suction head,is compared with a wave form detected at the light detector,after mounting of the conductive ball is finished. Through the above described processing, errors in the light interruption that stem from a tilted suction head,and machining errors during processing of suction holes,are eliminated, and the existence, or non-existence, of the conductive ball,is detected at a high accuracy level.