US 12,325,202 B2
Method and system for inspecting quality of tire member
Mitsuo Tsuji, Kanagawa (JP); Yuichiro Hisada, Kanagawa (JP); Satoshi Onodera, Kanagawa (JP); Atsushi Iwai, Shiga (JP); Kousuke Shimada, Tokyo (JP); Takeshi Yokoji, Tokyo (JP); and Kenta Ishii, Tokyo (JP)
Assigned to The Yokohama Rubber Co., LTD., Tokyo (JP)
Appl. No. 18/850,911
Filed by The Yokohama Rubber Co., LTD., Kanagawa (JP)
PCT Filed Dec. 26, 2022, PCT No. PCT/JP2022/047868
§ 371(c)(1), (2) Date Sep. 25, 2024,
PCT Pub. No. WO2023/188646, PCT Pub. Date Oct. 5, 2023.
Claims priority of application No. 2022-059703 (JP), filed on Mar. 31, 2022.
Prior Publication US 2025/0108576 A1, Apr. 3, 2025
Int. Cl. G01N 23/04 (2018.01); B29D 30/00 (2006.01); G01N 23/083 (2018.01); G01N 23/18 (2018.01)
CPC B29D 30/0061 (2013.01) [G01N 23/04 (2013.01); G01N 23/083 (2013.01); G01N 23/185 (2013.01); B29D 30/0016 (2013.01); B29D 2030/0066 (2013.01); G01N 2223/645 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A quality inspection method for a tire member for determining predetermined quality of a tire member that is elongated and that is formed by bonding a plurality of types of constituent members, the quality inspection method comprising:
continuously performing a process of applying X-rays to a predetermined length range of the tire member from a top surface side of the tire member while conveying the tire member in a longitudinal direction to acquire image data based on X-ray transmittance of the predetermined length range;
acquiring the image data of the predetermined length range continuous without gaps in the longitudinal direction; and
determining, based on contrast in each piece of the image data acquired, a magnitude of variation in the predetermined quality of the tire member in the longitudinal direction.