Title:
DEFECT INSPECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/093372
Kind Code:
A1
Abstract:
Disclosed is a defect inspection device that can precisely detect defects on the load surface of a pipe that has a load surface inclined away from the pipe end and defects in an inspection region between screw threads. Said defect inspection device, which can also detect defects on the outer surface of a lip section, is characterized by the provision of: a first light source (2); a first imaging means (3) which images the outer surface of a lip section (102) by receiving reflected light emitted from the first light source and reflected off the outer surface of said lip section; a second light source (7); a second imaging means (8) that images a load surface (103) by receiving reflected light emitted from the second light source and reflected off the load surface; a third light source (9); a third imaging means (10) that images an inspection region (106) between screw threads by receiving reflected light emitted from the third light source and reflected off said inspection region; and an inspection means that performs image processing on images taken by the first through third imaging means in order to detect defects on the outer surface of the lip section, on the load surface, and in the inspection region between screw threads.
Inventors:
ANAYAMA KAZUTAKA (JP)
SUZUMA TOSHIYUKI (JP)
NAKAO YOSHIYUKI (JP)
IKEDA MASAMI (JP)
SAKAI KENTA (JP)
SUZUMA TOSHIYUKI (JP)
NAKAO YOSHIYUKI (JP)
IKEDA MASAMI (JP)
SAKAI KENTA (JP)
Application Number:
PCT/JP2011/051583
Publication Date:
August 04, 2011
Filing Date:
January 27, 2011
Export Citation:
Assignee:
SUMITOMO METAL IND (JP)
ANAYAMA KAZUTAKA (JP)
SUZUMA TOSHIYUKI (JP)
NAKAO YOSHIYUKI (JP)
IKEDA MASAMI (JP)
SAKAI KENTA (JP)
ANAYAMA KAZUTAKA (JP)
SUZUMA TOSHIYUKI (JP)
NAKAO YOSHIYUKI (JP)
IKEDA MASAMI (JP)
SAKAI KENTA (JP)
International Classes:
G01N21/952
Domestic Patent References:
| WO2009119713A1 | 2009-10-01 |
Foreign References:
| JP2007010393A | 2007-01-18 | |||
| JP2005181001A | 2005-07-07 | |||
| JPH03135753A | 1991-06-10 | |||
| JPS63191007A | 1988-08-08 | |||
| JPS6269113A | 1987-03-30 | |||
| JPS61225610A | 1986-10-07 | |||
| JPS60250235A | 1985-12-10 | |||
| JP2010210292A | 2010-09-24 | |||
| JP2010038554A | 2010-02-18 |
Other References:
See also references of EP 2530457A4
None
None
Attorney, Agent or Firm:
OHNAKA Minoru (JP)
Minoru Onaka (JP)
Minoru Onaka (JP)
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Claims: