Title:
PINHOLE INSPECTION DEVICE FOR CAN BODY
Document Type and Number:
WIPO Patent Application WO/2014/045890
Kind Code:
A1
Abstract:
The present invention is a pinhole inspection device for a can body, the device being provided with: a rotating plate having an aperture passing therethrough; a movable plate provided on a fixed frame side to face the rotating plate; a can body holding member for supporting a barrel part of the can body; a light detector for detecting light leaking into the can body; and a light source for applying light to the outer peripheral surface of the can body, and the device being characterized in that the movable plate is provided with a ring plate on the front surface of a piston member having a through-hole in the center thereof with a joint member interposed therebetween, a shielding member produced from an annular member formed concentrically with the through-hole is provided in the ring plate, and the shielding member is brought into sliding contact with the rotating plate by a pressurization mechanism. Consequently, disturbance light can be effectively prevented from reaching the light detector side from a gap between the movable plate and the rotating plate, the gap being caused by external force, the surface states of a sealing ring plate and a sliding ring plate, or the like.
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Inventors:
KOUJI YASUHIRO (JP)
SEO TOMOKI (JP)
ISHII YUUMA (JP)
SEO TOMOKI (JP)
ISHII YUUMA (JP)
Application Number:
PCT/JP2013/073981
Publication Date:
March 27, 2014
Filing Date:
September 05, 2013
Export Citation:
Assignee:
TOYO SEIKAN KAISHA LTD (JP)
International Classes:
G01N21/90
Foreign References:
| JP2003075360A | 2003-03-12 | |||
| JPH06109661A | 1994-04-22 | |||
| JPS577545A | 1982-01-14 | |||
| JP2009025131A | 2009-02-05 | |||
| JP2004317356A | 2004-11-11 | |||
| JP2002365230A | 2002-12-18 | |||
| JP4715988B2 | 2011-07-06 | |||
| JP2002365230A | 2002-12-18 | |||
| JP4230269B2 | 2009-02-25 |
Other References:
See also references of EP 2899536A4
Attorney, Agent or Firm:
OSHIRO Shigenobu et al. (JP)
Oshiro Shigenobu (JP)
Oshiro Shigenobu (JP)
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