JPH0618233A - Tire inspecting method - Google Patents
Tire inspecting methodInfo
- Publication number
- JPH0618233A JPH0618233A JP4097705A JP9770592A JPH0618233A JP H0618233 A JPH0618233 A JP H0618233A JP 4097705 A JP4097705 A JP 4097705A JP 9770592 A JP9770592 A JP 9770592A JP H0618233 A JPH0618233 A JP H0618233A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- inspection
- factor
- internal pressure
- image reading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Image Analysis (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Image Processing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、タイヤ検査方法に係
わり、更に詳しくは成形されたタイヤの対称性及び真円
性、例えば、偏肉したタイヤの検査を人手を介すること
なく自動的に、しかも精度良く行うことが出来るタイヤ
検査方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire inspection method, and more specifically, to the symmetry and roundness of a molded tire, for example, an inspection of a tire having an uneven thickness is automatically performed without human intervention. Moreover, the present invention relates to a tire inspection method that can be performed with high accuracy.
【０００２】[0002]
【従来の技術】従来、成形されたタイヤの特定な故障検
査（例えばタイヤ構成部材の剥離）を検査する方法とし
ては、接触式のセンサーを使用したり、レーザー等組合
せを使用して距離や表面硬さを検出する方法等、各種の
検出方法が提案されている。ところで、一般に成形不良
による断面肉厚が不均一な、所謂、偏肉タイヤは、構造
的に非対称な形状となり、このようなタイヤは走行中に
偏摩耗が発生して不慮の事故の原因となるが、このよう
な偏肉タイヤを機械的に検査する方法は、未だ提案され
ておらず、例えば検査タイヤをインフレートしない状態
で、タイヤのセンターラインとモールドのラインとが一
致しているか否かを目視により判断する方法、また検査
タイヤをインフレートした状態でマスターゲージ等を当
てて目視により判断する方法等が行われていた。2. Description of the Related Art Conventionally, as a method for inspecting a specific failure inspection of a molded tire (for example, peeling of a tire constituent member), a contact type sensor is used or a combination such as a laser is used to measure a distance and a surface. Various detection methods such as a method for detecting hardness have been proposed. By the way, generally, a so-called uneven thickness tire having a non-uniform cross-section wall thickness due to defective molding has a structurally asymmetric shape, and such a tire causes uneven wear during running, which causes an unexpected accident. However, a method of mechanically inspecting such an uneven thickness tire has not been proposed yet, and for example, whether or not the center line of the tire and the line of the mold coincide with each other without inflating the inspected tire. There has been performed a method of visually observing, and a method of visually observing the tire by applying a master gauge or the like in an inflated state.
【０００３】[0003]
【発明が解決しようとする問題点】然しながら、従来の
検査方法は、人手及び目視による検査であるため、常に
正確で精度の高い検査をすることが難しく、また検査タ
イヤに検査装置等を接触させた状態で検査するため、検
査タイヤの表面に傷等を付ける恐れがあり、製品の品質
を損なうと言う問題があった。However, since the conventional inspection method is a manual and visual inspection, it is difficult to perform an accurate and highly accurate inspection at all times, and an inspection device or the like is brought into contact with the inspection tire. Since the inspection is carried out in such a state, there is a problem that the surface of the inspected tire may be scratched and the quality of the product is impaired.
【０００４】この発明は、かかる従来の課題に着目して
案出されたもので、無接触状態で検査タイヤの検査を行
うことが出来ると共に、人手を介することなく自動的
に、しかも精度良く行うことが出来るタイヤ検査方法を
提供することを目的とするものである。The present invention has been devised in view of the above-mentioned conventional problems. It is possible to inspect an inspected tire in a non-contact state, and to perform the inspection automatically and accurately without human intervention. It is an object of the present invention to provide a tire inspection method that can be performed.
【０００５】[0005]
【課題を解決するための手段】この発明は上記目的を達
成するため、タイヤ把持・回転装置上に検査タイヤをセ
ットし、この検査タイヤのトレッド部またはサイド部の
検査対象位置に対応して少なくとも１ヵ所に画像読取り
装置を設置し、前記検査タイヤを回転させながら画像読
取り装置でタイヤを読み取り、中央演算処理装置に入力
してタイヤの輪郭を抽出して比較演算する際、タイヤの
内圧要因と測定対象要因とを選択すると共に組合せ、検
査タイヤの対称性または形状の相似性の判定を行うこと
を要旨とするものである。In order to achieve the above object, the present invention sets an inspection tire on a tire gripping / rotating device, and at least corresponds to the inspection target position of the tread portion or side portion of the inspection tire. When an image reading device is installed in one place, the tire is read by the image reading device while rotating the inspection tire, and the tire contour is extracted by inputting it to the central processing unit for comparison calculation. The gist of the invention is to select and combine the factors to be measured and determine the symmetry or shape similarity of the inspection tire.
【０００６】前記タイヤの内圧要因として、同一内圧及
び異なる内圧にし、また前記タイヤの測定対象要因とし
て、タイヤ上下半分づつ対称性を同一周上点、またはタ
イヤ周上の１点を基点として他の周上点の形状の相似性
の度合いとするものである。[0006] As the internal pressure factor of the tire, the same internal pressure and different internal pressure are set, and as the measurement target factor of the tire, the symmetry of the upper and lower halves of the tire is on the same circumference point, or one point on the tire circumference is another point. It is the degree of similarity of the shapes of the points on the circumference.
【０００７】[0007]
【発明の作用】この発明は上記のように構成され、タイ
ヤ把持・回転装置上にセットした検査タイヤをインフレ
ートし、同一内圧または異なる内圧のもとで、検査タイ
ヤを回転させながらトレッド部またはサイド部の輪郭線
を画像読取り装置で読み取って抽出した後に画像処理を
行い、タイヤ周上の１点を基点として等分周される各点
との差により相似性の度合いを比較するか、または同一
周上点で上下の対称性の度合いを比較判定し、人手を介
することなく常に精度の高い検査を行うものである。The present invention is configured as described above, and inflates the inspection tire set on the tire gripping / rotating device, and rotates the inspection tire under the same internal pressure or different internal pressure, or the tread portion or Image processing is performed after the contour line of the side portion is read by an image reading device and extracted, and the degree of similarity is compared by the difference with each point equally divided from one point on the tire circumference, or The degree of vertical symmetry is compared and determined at points on the same circumference, and highly accurate inspection is always performed without manual intervention.
【０００８】[0008]
【発明の実施例】以下、添付図面に基づき、この発明の
実施例を説明する。図１は、この発明を実施したタイヤ
検査装置の概略構成図、図２はタイヤ検査装置の電気的
構成図を示し、１は検査タイヤＷを把持，回転するタイ
ヤ把持・回転装置を示し、前記タイヤ把持・回転装置１
の近傍には、検査タイヤＷのトレッド部Ｗt またはサイ
ド部Ｗs の検査対象位置に対応して少なくとも１ヵ所に
テレビカメラやタイヤプロファイル抽出用レーザーライ
ンマーカー等の画像読取り装置２ａまたは２ｂ，２ｃ
と、照明装置３が設置されている。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of a tire inspection device embodying the present invention, FIG. 2 is an electrical configuration diagram of the tire inspection device, and 1 is a tire gripping / rotating device that grips and rotates an inspection tire W. Tire gripping / rotating device 1
In the vicinity of, the image reading device 2a or 2b, 2c such as a TV camera or a laser line marker for tire profile extraction is provided at least at one position corresponding to the inspection target position of the tread portion Wt or the side portion Ws of the inspection tire W.
And the lighting device 3 is installed.
【０００９】前記タイヤ把持・回転装置１は、シャフト
４を介して駆動モータ等の回転駆動装置５が設けられ、
またタイヤ把持・回転装置１の図示しないチャッキング
装置には、検査タイヤＷに圧縮された空気を供給する圧
力ポンプ等の圧力供給源６が接続されている。前記画像
読取り装置２ａ，２ｂ，２ｃ，照明装置３，回転駆動装
置５，圧力供給源６は、中央演算処理装置７に接続され
ている。The tire gripping / rotating device 1 is provided with a rotary drive device 5 such as a drive motor via a shaft 4.
A pressure supply source 6 such as a pressure pump for supplying compressed air to the inspection tire W is connected to a chucking device (not shown) of the tire gripping / rotating device 1. The image reading devices 2a, 2b, 2c, the lighting device 3, the rotation driving device 5, and the pressure supply source 6 are connected to a central processing unit 7.
【００１０】前記中央演算処理装置７の正面には、画像
読取り装置２ａ，２ｂ，２ｃで抽出した検査タイヤＷの
画像及び検査結果等を表示する表示装置８と、その前面
の操作盤９は、キーボード１０とが設けられ、キーボー
ド１０を操作することにより、検査タイヤＷに高圧力ま
たは低圧力を切換える圧力切換えスイッチ機能と、検査
タイヤＷのトレッド部Ｗt またはサイド部Ｗs の画像を
取り入れる画像読取り装置２ａ，２ｂ，２ｃの画像処理
切換えスイッチの機能、及び検査タイヤＷの測定対象要
因としてのタイヤ周上の１点を基点として等分周される
各点との差により相似性の度合いを比較するか、または
同一周上点で上下の対称性の度合いを比較判定するかを
選択するためのスイッチの機能を持たせている。On the front surface of the central processing unit 7, a display device 8 for displaying an image of the inspection tire W extracted by the image reading devices 2a, 2b, 2c and inspection results, and an operation panel 9 in front of the display device 8 are provided. A keyboard 10 is provided, and by operating the keyboard 10, a pressure changeover switch function for switching high pressure or low pressure to the inspection tire W, and an image reading device for taking in an image of the tread portion Wt or the side portion Ws of the inspection tire W are provided. The degree of similarity is compared by the function of the image processing changeover switches 2a, 2b, 2c and the difference from each point equally divided from one point on the tire circumference as a measurement target factor of the inspection tire W. Alternatively, a switch function is provided for selecting whether or not to compare and determine the degree of vertical symmetry at the same circumference point.
【００１１】また、前記タイヤ検査装置の電気的構成図
を説明すると、タイヤ検査装置は、中央演算処理装置７
（以下、ＣＰＵと言う）によって制御される。前記ＣＰ
Ｕ７には、画像読取り装置２ａ，２ｂ，２ｃ，照明装置
３，回転駆動装置５，圧力供給源６，キーボード１０等
が入出力インタ・フェイス１１を介して接続されてい
る。ＣＰＵ７は、検査タイヤＷのトレッド部Ｗt または
サイド部Ｗs の対称性及び真円性，または形状の相似性
の判定処理を行うもので、そのプログラム及び各種デー
タを記憶するメモリ１２を備えている。Explaining the electrical configuration of the tire inspection device, the tire inspection device is composed of a central processing unit 7
(Hereinafter, referred to as CPU). CP
Image reading devices 2a, 2b, 2c, a lighting device 3, a rotation driving device 5, a pressure supply source 6, a keyboard 10 and the like are connected to U7 via an input / output interface 11. The CPU 7 determines the symmetry and roundness of the tread portion Wt or the side portion Ws of the inspection tire W, or the shape similarity, and includes a memory 12 that stores the program and various data.
【００１２】次に、この発明のタイヤ検査方法について
説明する。このタイヤ検査方法については、各種の要因
を選択または組合せて行うことが出来、その具体的方法
を項目別に説明する。 （Ａ）．検査タイヤＷのトレッド部Ｗt の対称性の検査
方法。 図１に示すタイヤ把持・回転装置１上に検査タイヤＷを
セットして、図示しないチャッキング装置で検査タイヤ
Ｗをチャッキングする。次に、検査対象とするトレッド
部Ｗt に対応した画像読取り装置２ａをＣＰＵ７のキー
ボード１０を操作して選択し、また検査タイヤＷの内圧
要因、即ち、検査タイヤＷに供給する圧力を高圧か、ま
たは低圧かをＣＰＵ７のキーボード１０を操作して選択
する。Next, the tire inspection method of the present invention will be described. This tire inspection method can be performed by selecting or combining various factors, and the specific method will be described item by item. (A). A method of inspecting the symmetry of the tread portion Wt of the inspection tire W. The inspection tire W is set on the tire gripping / rotating device 1 shown in FIG. 1, and the inspection tire W is chucked by a chucking device (not shown). Next, the image reading device 2a corresponding to the tread portion Wt to be inspected is selected by operating the keyboard 10 of the CPU 7, and the internal pressure factor of the inspection tire W, that is, the pressure supplied to the inspection tire W is high. Alternatively, the low voltage is selected by operating the keyboard 10 of the CPU 7.
【００１３】更に、検査タイヤＷの測定対象要因とし
て、タイヤ周上の１点を基点として等分周される各点と
の差により形状の相似性の度合いを比較するか、または
同一周上点で上下の対称性の度合いを比較判定するか
を、ＣＰＵ７のキーボード１０を操作して選択する。こ
のような設定を行った後、照明装置３で検査タイヤＷに
照明を当て、更に回転駆動装置５で検査タイヤＷをセッ
トしたタイヤ把持・回転装置１を所定の回転数で回転さ
せながら前記画像読取り装置２ａで検査タイヤＷの輪郭
を読み取り、これをＣＰＵ７に入力してタイヤの輪郭を
抽出して、表示装置８に表示させ前記設定した内圧要因
及び測定対象要因に基づき比較演算する。Further, as a factor to be measured of the inspection tire W, the degree of shape similarity is compared by a difference from each point equally divided from one point on the tire circumference, or a point on the same circumference is compared. The keyboard 10 of the CPU 7 is operated to select whether to compare and determine the degree of vertical symmetry. After such settings are made, the illumination device 3 illuminates the inspection tire W, and the rotation driving device 5 sets the inspection tire W on the tire gripping / rotating device 1 while rotating the tire gripping / rotating device 1 at a predetermined rotational speed. The reading device 2a reads the contour of the inspection tire W, inputs this to the CPU 7, extracts the contour of the tire, displays it on the display device 8 and performs comparison calculation based on the set internal pressure factor and measurement factor.
【００１４】例えば、検査対象とするトレッド部Ｗt の
対称性を検査する場合には、検査タイヤＷに高圧または
低圧のいずれかの圧力を供給して抽出した輪郭線を中心
から反転させて上下部分を重ね、その差により対称性を
比較判定し、タイヤ周上の１点を基点として等分周され
る各点との差により形状の相似性の度合いを比較する場
合には、上記のように画像読取り装置２ａでトレッド部
Ｗt を読み取りながらＣＰＵ７の表示装置８に抽出表示
させ、タイヤ周上の基点と、等分周される各点とを重ね
て、その差により検査タイヤの形状の相似性の度合いを
比較判定する。For example, when the symmetry of the tread portion Wt to be inspected is to be inspected, either the high pressure or the low pressure is supplied to the inspection tire W to invert the extracted contour line from the center and the upper and lower parts thereof are inverted. When the symmetry is compared and judged based on the difference, and the degree of shape similarity is compared based on the difference with each point equally divided from one point on the tire circumference, as described above, While the tread portion Wt is being read by the image reading device 2a, the tread portion Wt is extracted and displayed on the display device 8 of the CPU 7, the base point on the tire circumference and each equally divided point are overlapped, and the difference in shape causes the similarity of the shape of the tire to be inspected. The degree of is compared and judged.
【００１５】また、同様な検査において高圧力を検査タ
イヤＷに供給し、同様な方法によってタイヤ周上の基点
と、等分周される各点とを重ねて、その差により検査タ
イヤの形状の相似性の度合いを比較判定することも可能
であり、更に内圧要因を変化させながら同一周上点で上
下の対称性の度合いの異なる圧力間の差を比較判定する
ことも可能である。Further, in the same inspection, a high pressure is supplied to the inspection tire W, and a base point on the tire circumference and each equally-divided point are overlapped by the same method, and the shape of the inspection tire is determined by the difference. It is also possible to compare and determine the degree of similarity, and it is also possible to compare and determine the difference between pressures having different vertical symmetry degrees at the same circumferential point while changing the internal pressure factor.
【００１６】また、上記のような内圧要因及び測定対象
要因を任意に選択組合せて検査することも可能である。 （Ｂ）．検査タイヤＷのサイド部Ｗs の対称性の検査方
法。 図１に示すタイヤ把持・回転装置１上に検査タイヤＷを
セットして、図示しないチャッキング装置で検査タイヤ
Ｗをチャッキングする。次に、検査対象とするサイド部
Ｗs に対応した画像読取り装置２ｂ及び２ｃ（テレビカ
メラ及びタイヤプロファイル抽出用レーザーラインマー
カー）をＣＰＵ７のキーボード１０を操作して選択し、
また検査タイヤＷの内圧要因、即ち、検査タイヤＷに供
給する圧力を高圧か、または低圧かをＣＰＵ７のキーボ
ード１０を操作して選択する。It is also possible to inspect by optionally selecting and combining the internal pressure factor and the measurement target factor as described above. (B). A method for inspecting the symmetry of the side portion Ws of the inspection tire W. The inspection tire W is set on the tire gripping / rotating device 1 shown in FIG. 1, and the inspection tire W is chucked by a chucking device (not shown). Next, the image reading devices 2b and 2c (TV camera and laser line marker for tire profile extraction) corresponding to the side portion Ws to be inspected are selected by operating the keyboard 10 of the CPU 7,
Further, the internal pressure factor of the inspection tire W, that is, whether the pressure supplied to the inspection tire W is high pressure or low pressure is selected by operating the keyboard 10 of the CPU 7.
【００１７】更に、検査タイヤＷの測定対象要因とし
て、タイヤ周上の１点を基点として等分周される各点と
の差により形状の相似性の度合いを比較するか、または
同一周上点で上下の対称性の度合いを比較判定するか
を、ＣＰＵ７のキーボード１０を操作して選択する。こ
のような設定を行った後、回転駆動装置５で検査タイヤ
Ｗをセットしたタイヤ把持・回転装置１を所定の回転数
で回転させながら前記画像読取り装置２ｂ及び２ｃで検
査タイヤＷのサイド部の輪郭を読み取り、これをＣＰＵ
７に入力してタイヤの輪郭を抽出し、表示装置８に表示
させ前記設定した内圧要因及び測定対象要因に基づき比
較演算する。Further, as a factor to be measured for the inspection tire W, the degree of shape similarity is compared by the difference between each point equally divided from one point on the tire circumference as a base point, or points on the same circumference are compared. The keyboard 10 of the CPU 7 is operated to select whether to compare and determine the degree of vertical symmetry. After such setting, while rotating the tire gripping / rotating device 1 on which the inspection tire W is set by the rotation driving device 5 at a predetermined rotation speed, the image reading devices 2b and 2c are used to detect the side portion of the inspection tire W. The contour is read and this is read by the CPU
7, the tire contour is extracted, displayed on the display device 8 and compared and calculated based on the set internal pressure factor and measurement target factor.
【００１８】例えば、検査対象とするサイド部Ｗs の対
称性を検査する場合に、検査タイヤＷに高圧または低圧
のいずれか圧力を供給し、画像読取り装置２ｂによって
抽出された図１の上側からのタイヤプロファイル輪郭線
に、画像読取り装置２ｃによって抽出された図１の下側
からのタイヤプロファイル輪郭線を反転させて重ね合わ
せ、その差により対称性を比較判定し、タイヤ周上の１
点を基点として等分周される各点との差により形状の相
似性の度合いを比較する場合には、上記のように上下比
較の場合は、画像読取り装置２ｂでサイド部Ｗs を読み
取りながらＣＰＵ７の表示装置８に抽出表示させ、タイ
ヤ周上の基点と、等分周される各点とを重ねて、その差
により検査タイヤの形状の相似性の度合いを比較判定す
る。なお、下側比較の場合には、画像読取り装置２ｃに
よって上記と同様な操作により比較判定を行うものであ
る。For example, when inspecting the symmetry of the side portion Ws to be inspected, either high pressure or low pressure is supplied to the inspection tire W, and the image is read from the upper side of FIG. 1 extracted by the image reading device 2b. The tire profile contour line from the lower side of FIG. 1 extracted by the image reading device 2c is inverted and superposed on the tire profile contour line, and the symmetry is compared and determined based on the difference between the tire profile contour line and the tire profile contour line.
When comparing the degree of similarity of shapes based on the difference from each point that is equally divided with the point as the base point, in the case of top-bottom comparison as described above, the CPU 7 while reading the side portion Ws by the image reading device 2b. The reference point on the tire circumference is overlapped with each of the points equally divided, and the degree of similarity of the shape of the inspected tire is compared and determined by the difference. In the case of the lower side comparison, the image reading device 2c performs the comparison determination by the same operation as described above.
【００１９】また、同様な検査において高圧力を検査タ
イヤＷに供給し、同様な方法によってタイヤ周上の基点
と、等分周される各点とを重ねて、その差により検査タ
イヤの形状の相似性の度合いを比較判定することが可能
であり、更に内圧要因を変化させながら同一周上点で上
下の対称性の度合いの異なる圧力間の差を比較判定する
ことも可能である。Further, in the same inspection, a high pressure is supplied to the inspection tire W, and a base point on the tire circumference and each equally divided point are overlapped by the same method, and the difference in the shape of the inspection tire is determined by the difference. It is possible to compare and determine the degree of similarity, and it is also possible to compare and determine the difference between pressures having different degrees of vertical symmetry at the same circumferential point while changing the internal pressure factor.
【００２０】また、上記のような内圧要因及び測定対象
要因を任意に選択組合せて検査することも可能である。
以上のように、この発明の実施例では、タイヤ把持・回
転装置１上にセットした検査タイヤＷをインフレート
し、同一内圧または異なる内圧のもとで、検査タイヤ１
を回転させながらトレッド部またはサイド部の輪郭線を
画像読取り装置２ａまたは２ｂ，２ｃで読み取って抽出
した後、ＣＰＵ７により画像処理を行い、タイヤ周上の
１点を基点として等分周される各点との差により形状の
相似性の度合いを比較するか、または同一周上点で上下
の対称性の度合いを比較判定し、人手を介することなく
常に精度の高い検査を行うものである。It is also possible to inspect by optionally selecting and combining the internal pressure factor and the measurement target factor as described above.
As described above, in the embodiment of the present invention, the inspection tire W set on the tire gripping / rotating device 1 is inflated, and the inspection tire 1 is subjected to the same internal pressure or different internal pressure.
After the contour line of the tread portion or the side portion is read and extracted by the image reading device 2a or 2b, 2c while rotating, the image processing is performed by the CPU 7, and each point is equally divided from one point on the tire circumference as a base point. The degree of similarity of shapes is compared based on the difference between points, or the degree of vertical symmetry is compared and determined at points on the same circumference, and inspection is always performed with high accuracy without human intervention.
【００２１】なお、検査目的によっては、画像読取り装
置の配設数は、適宜選択することが可能であり、また画
像読取り装置を多軸の自由度を有するカメラ移動装置上
に設置すれば１台でも可能である。Depending on the purpose of inspection, the number of image reading devices can be appropriately selected, and if the image reading device is installed on a camera moving device having multi-axis freedom, one image reading device is provided. But it is possible.
【００２２】[0022]
【発明の効果】この発明は、上記のようにタイヤ把持・
回転装置上に検査タイヤをセットし、この検査タイヤの
トレッド部またはサイド部の検査対象位置に対応して少
なくとも１ヵ所に画像読取り装置を設置し、前記検査タ
イヤを回転させながら画像読取り装置でタイヤを読み取
り、中央演算処理装置に入力してタイヤの輪郭を抽出し
て比較演算する際、タイヤの内圧要因と測定対象要因と
を選択すると共に組合せ、検査タイヤの対称性または形
状の相似性の判定を行うので、非接触状態で検査タイヤ
の検査を行うことが出来ると共に、人手を介することな
く自動的に、しかも精度良く行うことが出来、更に非接
触状態で検査することが可能であるので、検査タイヤに
傷等を付けることなく検査でき、商品の品質を損なうこ
となく検査出来る効果がある。As described above, the present invention is useful for gripping a tire.
An inspection tire is set on a rotating device, an image reading device is installed in at least one position corresponding to the inspection target position of the tread portion or side portion of the inspection tire, and the tire is read by the image reading device while rotating the inspection tire. Reading, inputting to the central processing unit, extracting the contour of the tire and performing comparison calculation, select and combine the internal pressure factor of the tire and the measurement target factor, and determine the symmetry or shape similarity of the inspection tire Since it is possible to perform the inspection of the tire to be inspected in a non-contact state, the inspection can be performed automatically and accurately without human intervention, and it is possible to inspect in a non-contact state. The inspection tire can be inspected without scratches and the like, and there is an effect that it can be inspected without impairing the quality of the product.
【図１】この発明を実施したタイヤ検査装置の概略構成
図である。FIG. 1 is a schematic configuration diagram of a tire inspection device embodying the present invention.
【図２】この発明を実施したタイヤ検査装置の電気的構
成図である。FIG. 2 is an electrical configuration diagram of a tire inspection device embodying the present invention.
１ タイヤ把持・回転装置 ２ａ，２ｂ，２ｃ 画
像読取り装置 ３ 照明装置 ４ シャ
フト ５ 回転駆動装置 ６ 圧力
供給源 ７ 中央演算処理装置 ８ 表示
装置 ９ 操作盤 １０ キー
ボード １１ 入出力インタ・フェイス １２ メ
モリ Ｗ 検査タイヤ Ｗt トレ
ッド部 Ｗs サイド部1 Tire gripping / rotating device 2a, 2b, 2c Image reading device 3 Illumination device 4 Shaft 5 Rotation drive device 6 Pressure supply source 7 Central processing unit 8 Display device 9 Operation panel 10 Keyboard 11 Input / output interface 12 Memory W inspection Tire Wt Tread part Ws side part
Claims (5)
ットし、この検査タイヤのトレッド部またはサイド部の
検査対象位置に対応して少なくとも１ヵ所に画像読取り
装置を設置し、前記検査タイヤを回転させながら画像読
取り装置でタイヤを読み取り、中央演算処理装置に入力
してタイヤの輪郭を抽出して比較演算する際、タイヤの
内圧要因と測定対象要因とを選択すると共に組合せ、検
査タイヤの対称性または形状の相似性の判定を行うこと
を特徴とするタイヤ検査方法。1. An inspection tire is set on a tire gripping / rotating device, and an image reading device is installed at at least one position corresponding to an inspection target position of a tread portion or a side portion of the inspection tire, and the inspection tire is rotated. While reading the tire with the image reading device and inputting it to the central processing unit to extract the contour of the tire for comparison calculation, select and combine the internal pressure factor of the tire and the measurement target factor, and symmetry of the inspection tire Alternatively, a tire inspection method is characterized by determining the similarity of shapes.
ヤを同一内圧のもとでインフレートし、検査判定を行う
請求項１に記載のタイヤ検査方法。2. The tire inspection method according to claim 1, wherein as a factor of the internal pressure of the tire, an inspection tire is inflated under the same internal pressure to make an inspection determination.
ヤを異なる内圧のもとでインフレートし、検査判定を行
う請求項１に記載のタイヤ検査方法。3. The tire inspection method according to claim 1, wherein an inspection tire is inflated under different internal pressures as an internal pressure factor of the tire to make an inspection determination.
下半分づつの対称性を同一周上点で比較判定を行う請求
項１に記載のタイヤ検査方法。4. The tire inspection method according to claim 1, wherein as a factor to be measured for the tire, the symmetry of each of the upper and lower halves of the tire is compared and determined at points on the same circumference.
上の１点を基点として他の周上点の相似性の度合いの比
較判定を行う請求項１に記載のタイヤ検査方法。5. The tire inspection method according to claim 1, wherein one factor on the tire circumference is used as a factor to be measured for the tire, and the degree of similarity of other circumferential points is compared and determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4097705A JPH0618233A (en) | 1992-04-17 | 1992-04-17 | Tire inspecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4097705A JPH0618233A (en) | 1992-04-17 | 1992-04-17 | Tire inspecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0618233A true JPH0618233A (en) | 1994-01-25 |
Family
ID=14199340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4097705A Pending JPH0618233A (en) | 1992-04-17 | 1992-04-17 | Tire inspecting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0618233A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998034090A1 (en) * | 1997-02-03 | 1998-08-06 | Buerger Joachim | Method and device for measuring the pattern depth on a tyre |
| JP2001249012A (en) * | 1999-12-28 | 2001-09-14 | Bridgestone Corp | Inspection method and device for appearance shape of specimen |
| JP2002116012A (en) * | 2000-10-06 | 2002-04-19 | Sumitomo Rubber Ind Ltd | Measuring method for dynamic profile of tire |
| US6417918B1 (en) * | 1999-09-22 | 2002-07-09 | Bridgestone Corporation | Tire Inspecting method and apparatus |
| US6667799B2 (en) * | 2001-09-03 | 2003-12-23 | Kabushiki Kaisha Bridgestone | Method and apparatus for inspecting an extruded tread |
| JP2006300727A (en) * | 2005-04-20 | 2006-11-02 | Yokohama Rubber Co Ltd:The | Tire failure detection method and device |
| JP2009250740A (en) * | 2008-04-04 | 2009-10-29 | Bridgestone Corp | Image synthesizing method and visual inspecting device of tire |
| KR101299571B1 (en) * | 2012-07-06 | 2013-08-23 | 세반코주식회사 | Irregularity inspection method for tire |
-
1992
- 1992-04-17 JP JP4097705A patent/JPH0618233A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998034090A1 (en) * | 1997-02-03 | 1998-08-06 | Buerger Joachim | Method and device for measuring the pattern depth on a tyre |
| US6417918B1 (en) * | 1999-09-22 | 2002-07-09 | Bridgestone Corporation | Tire Inspecting method and apparatus |
| JP2001249012A (en) * | 1999-12-28 | 2001-09-14 | Bridgestone Corp | Inspection method and device for appearance shape of specimen |
| JP2002116012A (en) * | 2000-10-06 | 2002-04-19 | Sumitomo Rubber Ind Ltd | Measuring method for dynamic profile of tire |
| JP4673479B2 (en) * | 2000-10-06 | 2011-04-20 | 住友ゴム工業株式会社 | Tire dynamic profile measurement method |
| US6667799B2 (en) * | 2001-09-03 | 2003-12-23 | Kabushiki Kaisha Bridgestone | Method and apparatus for inspecting an extruded tread |
| JP2006300727A (en) * | 2005-04-20 | 2006-11-02 | Yokohama Rubber Co Ltd:The | Tire failure detection method and device |
| JP4561455B2 (en) * | 2005-04-20 | 2010-10-13 | 横浜ゴム株式会社 | Tire failure detection method and apparatus |
| JP2009250740A (en) * | 2008-04-04 | 2009-10-29 | Bridgestone Corp | Image synthesizing method and visual inspecting device of tire |
| KR101299571B1 (en) * | 2012-07-06 | 2013-08-23 | 세반코주식회사 | Irregularity inspection method for tire |
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