发明名称 |
VISUAL INSPECTION METHOD OF METALLIC CAN END SEAMING, VISUAL INSPECTION METHOD OF METALLIC CAN, VISUAL INSPECTION DEVICE OF METALLIC CAN END SEAMING, AND INSPECTION DEVICE OF CONTAINER OPENING |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a visual inspection method of a metallic can end seaming capable of accurately measuring seam thickness of a seam-fastening part of a can over the entire circumference thereof. <P>SOLUTION: A visual inspection method of a metallic can end seaming using a visual inspection device includes: capturing a reflection image of both ends of an upper ends of a seam-fastening part with illumination light from a ring illumination device 2 disposed above the seam-fastening part by a camera 4 disposed to be coaxial with the center of the ring illumination device 2; converting an input image into a digital multi-gradation image; obtaining a double ring-shaped image of the both sides of the upper edge of the seam-fastening part; measuring the ring widths of the outer end and inner end of the double ring at a proper interval over the entire circumference thereof radially from the center of the ring-shaped image; and thus determining, when the dimension of each ring width is outside a threshold range of predetermined upper and lower limits, that the can is defective. <P>COPYRIGHT: (C)2012,JPO&INPIT |
申请公布号 |
JP2012159320(A) |
申请公布日期 |
2012.08.23 |
申请号 |
JP20110017430 |
申请日期 |
2011.01.31 |
申请人 |
HITACHI INFORMATION & CONTROL SOLUTIONS LTD |
发明人 |
FUJITA HIDEKI;KOFUNE KUNITOMO;ISHIKAWA KIYOSHI |
分类号 |
G01B11/02;G01B11/24;G01B11/30;G01N21/90 |
主分类号 |
G01B11/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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