Title:
METHOD FOR DETERMINING ACCUMULATION OF FOREIGN MATTER ON GREEN TIRE
Document Type and Number:
WIPO Patent Application WO/2017/208663
Kind Code:
A1
Abstract:
The present invention reliably and efficiently accumulates foreign matter on a green tire formed by a strip winding method. This method comprises: a raw data obtainment step Sa for creating three-dimensional raw data D0 of a surface 3 to be inspected, through rotation of a green tire T and through irradiation with sensor light 2L in an X direction by a two-dimensional displacement sensor 2; an averaging process step Sb for obtaining three-dimensional processed data D1 by performing an averaging process on the three-dimensional raw data D0; and an imaging step Sc for binarizing each distance data pieces z of the three-dimensional processed data D1 on the basis of a threshold value, and imaging three-dimensional processed data D2 which is resultant data of binarization. Widths Wx and Wy of a range K of the averaging process are set to be greater than a spiral pitch P of a rubber strip G and less than a width Gw of the rubber strip G.
Inventors:
ONIMATSU HIROYUKI (JP)
NAGAI KENICHI (JP)
NAGAI KENICHI (JP)
Application Number:
PCT/JP2017/015962
Publication Date:
December 07, 2017
Filing Date:
April 21, 2017
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
G01B11/30; B29D30/60; G01B11/24
Foreign References:
| JP2016099287A | 2016-05-30 | |||
| JP2014074590A | 2014-04-24 | |||
| JPH09220772A | 1997-08-26 | |||
| JP2005148049A | 2005-06-09 | |||
| JP2015229438A | 2015-12-21 | |||
| JP2010181320A | 2010-08-19 | |||
| US20150022634A1 | 2015-01-22 | |||
| JP2008284815A | 2008-11-27 | |||
| JP2015229438A | 2015-12-21 |
Other References:
See also references of EP 3454005A4
Attorney, Agent or Firm:
SUMITOMO Shintaro (JP)
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