PROBLEM TO BE SOLVED: To provide a position specification method capable of specifying a position of a joining part in a tire inspection image.SOLUTION: A position specification method according to the present invention includes the steps of: measuring a surface or inner structure of a tire, and acquiring an image representing the measured tire surface or inner structure by spreading it in the tire circumferential direction, as an inspection image; specifying a position of a marker provided at a position on a prescribed tire circumference on the tire surface, on the inspection image; acquiring, from storage means, information of a circumferential position of a joining part located on the tire circumference, the joining part as a part where a member constituting an annular body is joined in the tire circumferential direction, and information of the position of the marker located on the tire circumference, as information known when molding the tire; and specifying the position of the joining part on the inspection image, with the position of the marker specified on the inspection image defined as the reference, using the information of the circumferential position of the joining part and the information of the marker position.SELECTED DRAWING: Figure 1

    【課題】タイヤの検査画像において繋ぎ合わせ部の位置を特定することができる位置特定方法を提供する。【解決手段】本発明の位置特定方法は、タイヤの表面または内部構造を測定し、測定されたタイヤの表面または内部構造をタイヤ周方向に展開して表す画像を検査画像として取得するステップと、タイヤの表面の所定のタイヤ周上の位置に設けられたマーカの位置を、検査画像上で特定するステップと、タイヤの成形時に既知である情報として、環状体を構成する部材がタイヤ周方向に繋ぎ合わされた部分である繋ぎ合わせ部のタイヤ周上における周上位置の情報、およびマーカのタイヤ周上の位置の情報、を記憶手段から取得するステップと、検査画像上で特定されたマーカの位置を基準として、繋ぎ合わせ部の周上位置の情報およびマーカの位置の情報を用いて、検査画像上で繋ぎ合わせ部の位置を特定するステップと、を備える。【選択図】図1


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    Title :

    POSITION SPECIFICATION METHOD, POSITION SPECIFICATION DEVICE, TIRE INSPECTION METHOD, TIRE INSPECTION DEVICE, AND TIRE MANUFACTURING METHOD


    Additional title:

    位置特定方法、位置特定装置、タイヤの検査方法、タイヤ検査装置、およびタイヤの製造方法


    Contributors:

    Publication date :

    2018-03-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B60C VEHICLE TYRES , Fahrzeugreifen / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES




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