JPH04295706A - Method for measuring inside and outside diameters of tire - Google Patents

Method for measuring inside and outside diameters of tire

Info

Publication number
JPH04295706A
JPH04295706A JP6173991A JP6173991A JPH04295706A JP H04295706 A JPH04295706 A JP H04295706A JP 6173991 A JP6173991 A JP 6173991A JP 6173991 A JP6173991 A JP 6173991A JP H04295706 A JPH04295706 A JP H04295706A
Authority
JP
Japan
Prior art keywords
tire
inner diameter
outer diameter
diameter
measurement
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.)
Granted
Application number
JP6173991A
Other languages
Japanese (ja)
Other versions
JP2979262B2 (en
Inventor
Takeshi Yonezawa
猛 米沢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP3061739A priority Critical patent/JP2979262B2/en
Publication of JPH04295706A publication Critical patent/JPH04295706A/en
Application granted granted Critical
Publication of JP2979262B2 publication Critical patent/JP2979262B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To measure the in side diameter or the outside diameter of a tire accurately in a short time with an inexpensive apparatus. CONSTITUTION:When an inside diameter (r) or an outside diameter R of a tire W is measured, the area of the square inscribed with the inside diameter (r) or the outside diameter R of the tire W is obtained by operation. The inside diameter (r) or the out diameter R of the tire W is obtained by utilizing a numerical expression which is geometrically set based on the area. Thus, the highly precise measurement can be performed accurately in a short time without using a complicated device.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】この発明は、タイヤの内,外径測
定方法に係わり、更に詳しくは成形されたタイヤの内径
または外径を短時間に正確に測定することが出来るタイ
ヤの内,外径測定方法に関するものである。
[Field of Industrial Application] The present invention relates to a method for measuring the inner and outer diameters of tires, and more specifically, the present invention relates to a method for measuring the inner and outer diameters of tires, and more specifically, the present invention relates to a method for measuring the inner and outer diameters of tires, and more specifically, the invention relates to a method for measuring the inner and outer diameters of tires, and more particularly, the invention relates to a method for measuring the inner and outer diameters of tires. The present invention relates to a diameter measurement method.

【0002】0002

【従来の技術】近年、成形された種々のサイズのタイヤ
をロット別に自動的に仕分けるために、タイヤの内径ま
たは外径を測定するための装置が必要となってきた。そ
こで、従来では図4に示すように、タイヤの搬送路に発
光ダイオードアーレイ1a,1bを上下に配設し、この
間にタイヤWを通すことにより内径または外径を測定す
る装置、また図5に示すように搬送路の下部に螢光燈2
を配設すると共に、その上方にイメージセンサーカメラ
3を配設し、その間をタイヤWを通すことにより内径ま
たは外径を測定する装置が知られている。
2. Description of the Related Art In recent years, in order to automatically sort molded tires of various sizes into lots, a device for measuring the inner diameter or outer diameter of tires has become necessary. Therefore, conventionally, as shown in FIG. 4, light emitting diode arrays 1a and 1b are disposed vertically on the tire conveyance path, and a device is used to measure the inner diameter or outer diameter by passing the tire W between them. There is a fluorescent light 2 at the bottom of the transport path as shown.
An apparatus is known in which an image sensor camera 3 is disposed above the tire W, and the tire W is passed between the two to measure the inner diameter or outer diameter.

【0003】0003

【発明が解決しようとする問題点】然しながら、発光ダ
イオードアーレイ1a,1bを使用する装置は、発光ダ
イオードアーレイ1a,1bが高価であるため、装置全
体として高価となる問題があり、またイメージセンサー
カメラ3を使用した装置は、タイヤWを垂直方向から測
定せず、視野が末拡がり状となるため、正確な測定を行
うことが出来ないと言う問題があった。
[Problems to be Solved by the Invention] However, the device using the light emitting diode arrays 1a and 1b has the problem that the device as a whole becomes expensive because the light emitting diode arrays 1a and 1b are expensive, and the image sensor camera The device using No. 3 does not measure the tire W from the vertical direction and has a wide field of view, so there is a problem that accurate measurements cannot be made.

【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、安価な装置によりタイヤの内径また
は外径を短時間に正確に測定することが出来るタイヤの
内,外径測定方法を提供することを目的とするものであ
る。
[0004] The present invention was devised in view of the above-mentioned problems in the prior art, and is a method for measuring the inner and outer diameters of tires that can accurately measure the inner and outer diameters of tires in a short period of time using an inexpensive device. The purpose is to provide a method.

【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、コンべヤー上を一定の速度で搬送されて来
る測定タイヤの外径端部または内径端部の複数箇所を、
測定タイヤの搬送方向と直交する方向に一定の幅(P)
で設置された2個一対の光電検出器と、この光電検出器
に対して搬送方向に所定の長さ(L)で設置された複数
組の光電検出器とにより検出し、前記測定タイヤの搬送
速度(v)と、複数組の光電検出器の測定時間(t)と
から内径(h),(i)または外径(H),(I)の距
離を演算により求め、この内径(h),(i)または外
径の距離(H),(I)と、前記光電検出器の幅(P)
及び長さ(L)とで、タイヤの内径に内接する四角形の
面積(Sa)及び外径に内接する四角形の面積(Sb)
を演算により求め、この各々の面積から、幾何学的に設
定されている数式、即ち
[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention detects a plurality of locations on the outer diameter end or inner diameter end of a tire to be measured that is being conveyed at a constant speed on a conveyor.
Constant width (P) in the direction perpendicular to the conveyance direction of the measurement tire
A pair of photoelectric detectors installed at Calculate the distance between the inner diameter (h), (i) or the outer diameter (H), (I) from the velocity (v) and the measurement time (t) of multiple sets of photoelectric detectors, and calculate the inner diameter (h). , (i) or the outer diameter distance (H), (I) and the width (P) of the photoelectric detector.
and the length (L), the area of the rectangle inscribed in the inner diameter of the tire (Sa) and the area of the rectangle inscribed in the outer diameter (Sb)
is obtained by calculation, and from the area of each, a mathematical formula set geometrically, that is,

【0006】 を利用してタイヤの内径または外径を演算して求めるこ
とを要旨とするものである。
[0006]The gist of this method is to calculate and obtain the inner diameter or outer diameter of a tire using the following.

【0007】[0007]

【発明の作用】この発明は上記のように構成され、タイ
ヤの内径または外径を測定する場合、タイヤの内径また
は外径に内接する四角形の面積を演算により求め、この
面積から更に幾何学的に設定されている数式を利用する
ことによりタイヤの内径または外径を求めるようにする
ことで、従来のような複雑な装置を使用することなく、
しかも正確に短時間に精度の高い測定を行うことが出来
るものである。
Effect of the Invention The present invention is constructed as described above, and when measuring the inner diameter or outer diameter of a tire, the area of a rectangle inscribed in the inner diameter or outer diameter of the tire is calculated, and from this area, further geometric measurements are performed. By calculating the inner or outer diameter of a tire by using the formula set in
Moreover, it is possible to carry out highly accurate measurements accurately and in a short period of time.

【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
の内径または外径の測定装置の全体斜視図を示し、4は
成形されたタイヤWを搬送するローラコンべヤー、5は
ローラコンべヤー4を跨ぐように設置された門型フレー
ムを示し、この門型フレーム5には、ローラコンべヤー
4上を一定の速度(v)で搬送されて来るタイヤWの内
径(r)または外径(R)を測定するための複数の光電
管等から成る検出装置6が設置されている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an overall perspective view of an apparatus for measuring the inner diameter or outer diameter of a tire according to the present invention, in which 4 is a roller conveyor for conveying a formed tire W, and 5 is installed so as to straddle the roller conveyor 4. The gate-shaped frame 5 is equipped with a frame for measuring the inner diameter (r) or outer diameter (R) of the tire W being conveyed at a constant speed (v) on the roller conveyor 4. A detection device 6 consisting of a plurality of phototubes and the like is installed.

【0009】前記検出装置6は、測定タイヤWの搬送方
向Yと直交する方向に一定の幅(P)で設置された2個
一対の光電検出器7a,7bと、この光電検出器7a,
7bに対して搬送方向に所定の長さ(L)で平行に設置
された一組の光電検出器7c,7dとにより構成され、
この光電検出器7a,7b及び7c,7dと対応するロ
ーラコンべヤー4の下部には、反射板8a,8bが設置
されている。
The detection device 6 includes a pair of photoelectric detectors 7a, 7b installed with a constant width (P) in a direction perpendicular to the conveyance direction Y of the measurement tire W, and the photoelectric detectors 7a, 7b.
A pair of photoelectric detectors 7c and 7d are installed parallel to 7b with a predetermined length (L) in the transport direction,
Reflection plates 8a, 8b are installed at the lower part of the roller conveyor 4 corresponding to the photoelectric detectors 7a, 7b, 7c, 7d.

【0010】次に、上記のような測定装置を使用して、
タイヤWの内径(r)または外径(R)を測定する方法
について説明する。まず測定の条件として、タイヤWの
測定の内径(h)または(i)に対して、光電検出器7
a,7bと、光電検出器7c,7dとの距離(L)が大
きい場合について測定する。タイヤWの内径(r)を測
定する場合には、ローラコンべヤー4上を一定の速度(
v)で搬送されて来る測定タイヤWが、光電検出器7a
と7bの位置にくると光軸を順次遮光し、そしてタイヤ
Wの中空部が移動して来るまで光軸を遮光し続け、この
時、図2に示す光電検出器7a,7bの信号チャートが
立ち上がりる。次に、内径の中空部が移動してくると、
光軸は反射板8a,8bまで到達し、内径(r)の測定
を開始し、次のタイヤ本体が移動してくるまでの測定を
続け、一方光電検出器7a,7bと平行に配設された光
電検出器7c,7dが同様にして内径(r)の測定を開
始する。
Next, using the above measuring device,
A method of measuring the inner diameter (r) or outer diameter (R) of the tire W will be explained. First, as a measurement condition, for the inner diameter (h) or (i) of the tire W, the photoelectric detector 7
The measurement is performed when the distance (L) between a, 7b and the photoelectric detectors 7c, 7d is large. When measuring the inner diameter (r) of the tire W, the roller conveyor 4 is moved at a constant speed (
The measurement tire W conveyed by the photoelectric detector 7a
When the optical axis reaches the position 7b, the optical axis is successively blocked, and the optical axis continues to be blocked until the hollow part of the tire W moves. At this time, the signal chart of the photoelectric detectors 7a and 7b shown in FIG. Stand up. Next, when the hollow part of the inner diameter moves,
The optical axis reaches the reflectors 8a and 8b, starts measuring the inner diameter (r), and continues measuring until the next tire body moves. The photoelectric detectors 7c and 7d start measuring the inner diameter (r) in the same manner.

【0011】先に測定を開始した光電検出器7a,7b
の内径の測定が終了し、次いで後の光電検出器7c,7
dの内径の測定が終了した段階で、光電検出器7aと7
c及び光電検出器7b,,7dとの測定時間t1 ,t
2を検出し、この測定時間t1 ,t2と、前記測定タ
イヤの搬送速度(v)及び光電検出器7a,7bと、光
電検出器7c,7dとの距離(L)とから、以下の式に
より、図3に示すタイヤWの内径(h)または(i)を
演算により求める。
Photoelectric detectors 7a and 7b that started measurement first
After completing the measurement of the inner diameter of the photoelectric detectors 7c and 7,
When the measurement of the inner diameter of d is completed, the photoelectric detectors 7a and 7
measurement time t1, t with photoelectric detectors 7b, 7d
2 is detected, and from the measurement times t1 and t2, the transport speed (v) of the measurement tire, and the distance (L) between the photoelectric detectors 7a, 7b and the photoelectric detectors 7c, 7d, the following formula is used. , the inner diameter (h) or (i) of the tire W shown in FIG. 3 is calculated.

【0012】内径(h)=t1 ・v+L  ・・・(
1)内径(i)=t2・v+L  ・・・(2)測定タ
イヤWの搬送速度(v)は、 搬送速度(v)=(L/t3 +L/t4 )/2図3
に示すタイヤWの内径部分に内接する台形部分の面積(
Sa)は、
[0012] Inner diameter (h) = t1 ・v+L ... (
1) Inner diameter (i) = t2・v+L... (2) Conveyance speed (v) of the measurement tire W is Conveyance speed (v) = (L/t3 +L/t4)/2Figure 3
The area of the trapezoidal part inscribed in the inner diameter part of the tire W shown in (
Sa) is

【0013】[0013]

【0014】以上のような幾何学的に設定されている数
式を利用して、タイヤWの内径部分に内接する台形部分
の面積(Sa)を求めることにより、タイヤ内径(r)
を求めることが出来るのである。次に、同様にしてタイ
ヤWの外径(R)を求める場合には、光電検出器7a,
7b及び光電検出器7c,7dにより、測定時間t1 
,t2を検出し、この測定時間t1 ,t2と、前記測
定タイヤの搬送速度(v)とから、以下の式により、図
3に示すタイヤWの外径(H)または(I)を演算によ
り求める。
[0014]Using the mathematical formulas set geometrically as described above, by finding the area (Sa) of the trapezoidal part inscribed in the inner diameter part of the tire W, the inner diameter (r) of the tire can be determined.
It is possible to find. Next, when obtaining the outer diameter (R) of the tire W in the same manner, the photoelectric detector 7a,
7b and photoelectric detectors 7c and 7d, measurement time t1
, t2 are detected, and the outer diameter (H) or (I) of the tire W shown in FIG. demand.

【0015】 外径(H)=h+2(t3 −t1 )v・・・(3)
外径(I)=i+2(t4 −t2 )v・・・(4)
図3に示すタイヤWの外径部分に内接する台形部分の面
積(Sb)は、
Outer diameter (H)=h+2(t3-t1)v...(3)
Outer diameter (I) = i + 2 (t4 - t2) v... (4)
The area (Sb) of the trapezoidal part inscribed in the outer diameter part of the tire W shown in FIG.

【0016】[0016]

【0017】以上のような幾何学的に設定されている数
式を利用して、タイヤWの内径部分に内接する台形部分
の面積(Sb)を求めることにより、タイヤ外径(R)
を求めることが出来るのである。この発明は、上記のよ
うにタイヤWの内径(r)または外径(R)を測定する
場合、タイヤWの内径(r)または外径(R)に内接す
る四角形の面積を演算により求め、この面積から更に幾
何学的に設定されている数式を利用することによりタイ
ヤWの内径(r)または外径(R)を求めるようにする
ことで、従来のような複雑な装置を使用することなく、
しかも正確に短時間に精度の高い測定を行うことが出来
るものである。
[0017]Using the mathematical formulas set geometrically above, by finding the area (Sb) of the trapezoidal part inscribed in the inner diameter part of the tire W, the tire outer diameter (R) can be determined.
It is possible to find. When measuring the inner diameter (r) or outer diameter (R) of the tire W as described above, this invention calculates the area of a rectangle inscribed in the inner diameter (r) or outer diameter (R) of the tire W, By calculating the inner diameter (r) or outer diameter (R) of the tire W from this area by using a mathematical formula set geometrically, it is possible to use a complicated device like the conventional one. Without,
Moreover, it is possible to carry out highly accurate measurements accurately and in a short period of time.

【0018】[0018]

【発明の効果】この発明は、上記のようにコンべヤー上
を一定の速度で搬送されて来る測定タイヤの外径端部ま
たは内径端部の複数箇所を、測定タイヤの搬送方向と直
交する方向に一定の幅で設置された2個一対の光電検出
器と、この光電検出器に対して搬送方向に所定の長さで
平行に設置された複数組の光電検出器とにより検出し、
前記測定タイヤの搬送速度と、複数組の光電検出器の測
定時間とから内径または外径の距離を演算により求め、
この内径または外径の距離と、前記光電検出器の幅及び
長さとで、タイヤの内径に内接する四角形の面積及び外
径に内接する四角形の面積を演算により求め、この各々
の面積から、幾何学的に設定されている数式を利用して
タイヤの内径及び外径を演算して求めるので、安価な装
置によりタイヤの内径または外径を短時間に正確に測定
することが出来、またタイヤをセンターリングする必要
もないので作業性を向上させることが出来る効果がある
[Effects of the Invention] As described above, the present invention enables the measurement tire to be transported at a constant speed on a conveyor at a plurality of locations on the outer diameter end or the inner diameter end thereof, so as to be perpendicular to the conveyance direction of the measurement tire. Detection is performed by a pair of photoelectric detectors installed with a fixed width in the direction, and a plurality of sets of photoelectric detectors installed parallel to the photoelectric detectors with a predetermined length in the transport direction,
Calculating the distance of the inner diameter or outer diameter from the conveyance speed of the measurement tire and the measurement time of the plurality of sets of photoelectric detectors,
Using this distance between the inner diameter or outer diameter and the width and length of the photoelectric detector, calculate the area of a rectangle inscribed in the inner diameter of the tire and the area of a rectangle inscribed in the outer diameter of the tire, and from these respective areas, calculate the geometric Since the inner and outer diameters of the tire are calculated using scientifically established mathematical formulas, the inner and outer diameters of the tire can be measured quickly and accurately using inexpensive equipment. There is no need for centering, which has the effect of improving work efficiency.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】この発明を実施したタイヤの内径または外径の
測定装置の全体斜視図である。
FIG. 1 is an overall perspective view of an apparatus for measuring the inner diameter or outer diameter of a tire according to the present invention.

【図2】光電検出器の信号チャートを示す説明図である
FIG. 2 is an explanatory diagram showing a signal chart of a photoelectric detector.

【図3】測定タイヤの内径,外径を示す説明図である。FIG. 3 is an explanatory diagram showing the inner diameter and outer diameter of the tire to be measured.

【図4】従来のタイヤの内径または外径の測定装置の説
明図である。
FIG. 4 is an explanatory diagram of a conventional tire inner diameter or outer diameter measuring device.

【図5】従来のタイヤの内径または外径の測定装置の説
明図である。
FIG. 5 is an explanatory diagram of a conventional tire inner diameter or outer diameter measuring device.

【符号の説明】[Explanation of symbols]

4  ローラコンべヤー              
5  門型フレーム6  検出装置         
       7a,7b,7c,7d  光電検出器 W  タイヤ                   
     r  タイヤ内径R  タイヤ外径
4 Roller conveyor
5 Gate-shaped frame 6 Detection device
7a, 7b, 7c, 7d Photoelectric detector W Tire
r Tire inner diameter R Tire outer diameter

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  コンべヤー上を一定の速度で搬送され
て来る測定タイヤの外径端部または内径端部の複数箇所
を、測定タイヤの搬送方向と直交する方向に一定の幅で
設置された2個一対の光電検出器と、この光電検出器に
対して搬送方向に所定の長さで平行に設置された複数組
の光電検出器とにより検出し、前記測定タイヤの搬送速
度と、複数組の光電検出器の測定時間とから内径または
外径の距離を演算により求め、この内径または外径の距
離と、前記光電検出器の幅及び長さとで、タイヤの内径
に内接する四角形の面積及び外径に内接する四角形の面
積を演算により求め、この各々の面積から、幾何学的に
設定されている数式を利用してタイヤの内径及び外径を
演算して求めることを特徴とするタイヤの内,外径測定
方法。
Claim 1: A plurality of locations on the outer diameter end or inner diameter end of the measurement tire being transported at a constant speed on a conveyor are installed with a constant width in a direction orthogonal to the transport direction of the measurement tire. A pair of photoelectric detectors and a plurality of sets of photoelectric detectors installed parallel to the photoelectric detectors at a predetermined length in the conveyance direction are used to detect the conveyance speed of the measurement tire and a plurality of photoelectric detectors. Calculate the distance of the inner diameter or outer diameter from the measurement time of the set of photoelectric detectors, and calculate the area of the rectangle inscribed in the inner diameter of the tire by the distance of the inner diameter or outer diameter and the width and length of the photoelectric detector. and the area of a rectangle inscribed in the outer diameter by calculation, and from each area, the inner diameter and outer diameter of the tire are calculated by using mathematical formulas set geometrically. Outer diameter measurement method.
JP3061739A 1991-03-26 1991-03-26 Tire inner and outer diameter measuring method Expired - Fee Related JP2979262B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3061739A JP2979262B2 (en) 1991-03-26 1991-03-26 Tire inner and outer diameter measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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WO2004085958A1 (en) * 2003-03-21 2004-10-07 Durr Production Systems, Inc. Workpiece configuration detection system and method
CN103460011A (en) * 2011-04-07 2013-12-18 株式会社神户制钢所 Loading device for tire testing machine
JP2015004680A (en) * 2013-06-21 2015-01-08 シュタインビフラー オプトテヒニク ゲーエムベーハー Tire tester, tire testing facility, and tire testing method
WO2015041082A1 (en) * 2013-09-18 2015-03-26 株式会社シーパーツ Tire management system, tire data collecting device, and tire data collecting method
CN110332898A (en) * 2019-08-19 2019-10-15 苏州光图智能科技有限公司 The detection system and method for wheel hub internal diameter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004085958A1 (en) * 2003-03-21 2004-10-07 Durr Production Systems, Inc. Workpiece configuration detection system and method
US7248373B2 (en) 2003-03-21 2007-07-24 Durr Systems, Inc Workpiece configuration detection system and method
CN103460011A (en) * 2011-04-07 2013-12-18 株式会社神户制钢所 Loading device for tire testing machine
EP2696188A1 (en) * 2011-04-07 2014-02-12 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Loading device for tire testing machine
EP2696188A4 (en) * 2011-04-07 2014-09-10 Kobe Steel Ltd Loading device for tire testing machine
US8950250B2 (en) 2011-04-07 2015-02-10 Kobe Steel, Ltd. Loading device for tire testing machine
JP2015004680A (en) * 2013-06-21 2015-01-08 シュタインビフラー オプトテヒニク ゲーエムベーハー Tire tester, tire testing facility, and tire testing method
WO2015041082A1 (en) * 2013-09-18 2015-03-26 株式会社シーパーツ Tire management system, tire data collecting device, and tire data collecting method
JPWO2015041082A1 (en) * 2013-09-18 2017-03-02 株式会社シーパーツ Tire management system, tire data collection device, and tire data collection method.
CN110332898A (en) * 2019-08-19 2019-10-15 苏州光图智能科技有限公司 The detection system and method for wheel hub internal diameter

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