JPS63169513A - Coating film thickness measuring instrument - Google Patents
Coating film thickness measuring instrumentInfo
- Publication number
- JPS63169513A JPS63169513A JP216887A JP216887A JPS63169513A JP S63169513 A JPS63169513 A JP S63169513A JP 216887 A JP216887 A JP 216887A JP 216887 A JP216887 A JP 216887A JP S63169513 A JPS63169513 A JP S63169513A
- Authority
- JP
- Japan
- Prior art keywords
- distance
- coating film
- sensor
- measures
- distance sensor
- 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
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- 238000000576 coating method Methods 0.000 title claims abstract description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 239000000696 magnetic material Substances 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 2
- 239000003973 paint Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009675 coating thickness measurement Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、被塗物の表面に形成された乾燥前の濡れた状
態の塗膜の厚さを測定する装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for measuring the thickness of a wet coating film formed on the surface of an object to be coated before drying.
従来の技術及び発明が解決しようとする問題点例えば、
コンベアで搬送される被塗物に連続的に塗装を施す自動
塗装ラインにおいて、乾燥前の濡れ状態の塗膜の厚さを
知ることは、塗料吐出量を制御したり、補正塗装を行な
う上で重要なことであり、この濡れた塗膜の厚さを測定
する場合は、乾燥後の塗膜厚を測定する場合のように、
例えば。Problems to be solved by conventional techniques and inventions, for example,
In an automatic coating line that continuously applies coating to objects transported by a conveyor, knowing the thickness of the wet coating before drying is useful in controlling the amount of paint discharged and performing correction coating. It is important that when measuring the thickness of this wet film, as when measuring the dry film thickness,
for example.
鉄心入りのコイルを塗膜上に接触させ、コイルのインダ
クタンスの変化により被塗物の表面までの距離を取出し
て塗膜厚を測定する電磁膜厚計のような接触式の膜厚計
を使用することができないから、従来は、濡れ塗膜専用
として、偏心軸を利用したロータリ型、あるいは、歯形
の刻みで測定するくし型等のウェットゲージを用いてい
たが1輪あるいはくしの歯を塗膜中に押し込む構造であ
ることから、塗膜に大きな測定の痕跡が残る不具合があ
った。A contact-type film thickness meter such as an electromagnetic film thickness meter is used, which measures the film thickness by placing a coil with an iron core in contact with the coating and measuring the distance to the surface of the object to be coated based on changes in the coil's inductance. Conventionally, wet gauges such as a rotary type using an eccentric shaft or a comb type wet gauge that measures by the increments of the tooth profile were used exclusively for wet coating. Because it is a structure that is pushed into the film, there was a problem that large measurement marks remained on the coating film.
問題点を解決するための手段
上記の問題点を解決するための手段として、本発明の塗
膜厚測定装置は、被塗物の表面に形成された塗膜の表面
までの距離を測定する第1の距離センサと、前記被塗物
の表面までの距離を測定する第2の距離センサとを本体
に並設するとともに。Means for Solving the Problems As a means for solving the above-mentioned problems, the coating film thickness measuring device of the present invention has a method for measuring the distance to the surface of the coating film formed on the surface of the object to be coated. A first distance sensor and a second distance sensor for measuring the distance to the surface of the object to be coated are arranged in parallel on the main body.
前記第1と第2の距離センサの測定値の差を演算して表
示する演算表示装置を有する構成とした。The present invention is configured to include a calculation display device that calculates and displays the difference between the measured values of the first and second distance sensors.
発明の作用及び効果
本発明は上記構成になり、濡れ状態の塗膜が表面に形成
基れた被塗物に本体を対応させると、本体に並設したう
ちの第1の距離センサで塗膜の表面までの距離が測定さ
れるとともに、第2の距離センサで被塗物の表面までの
距離が測定され、演算表示装置により、第1と第2の距
離センサの測定値の差が演算されて、その演算値が塗膜
厚として表示されるのであって、塗膜に何ら接触させな
い構造であるから、測定の痕跡を全く残すことなく濡れ
状態の塗膜の厚さを測定することができ、しかも、その
塗膜厚が表示されるから、塗膜厚を簡単にかつ確実に認
識し得る効果がある。Functions and Effects of the Invention The present invention has the above configuration, and when the main body is brought into contact with an object to be coated on which a wet paint film is formed on the surface, the first distance sensor installed in parallel on the main body detects the paint film. The distance to the surface of the object to be coated is measured, the second distance sensor measures the distance to the surface of the object to be coated, and the calculation display device calculates the difference between the measured values of the first and second distance sensors. The calculated value is displayed as the coating film thickness, and since the structure does not allow any contact with the coating film, it is possible to measure the thickness of the wet coating film without leaving any traces of measurement. Moreover, since the coating film thickness is displayed, there is an effect that the coating film thickness can be easily and reliably recognized.
実施例 以下1本発明の一実施例を第1図に基づいて説明する。Example An embodiment of the present invention will be described below with reference to FIG.
図において、■は、測定装置本体であって、濡れた状態
の塗膜aを表面に形成した鉄等の磁性材料からなる被塗
物すの前方に対応して設置されるようになっており、こ
の本体1に、塗膜aの表面までの距離を測定する第1の
距離センサ3と、被塗物すの表面までの距離を測定する
第2の距離センサ4とが並んで取付けられており、第1
の距離センサ3は、光学的三角測距式の距離センサであ
って、発光素子からの投射光を塗膜aの表面で反射させ
て、その反射光を発光素子の側方に設けた位置検出素子
上にスポット光として受光させ、そのスポット光の位置
検出素子上の位置によって、距離センサ3から塗膜aの
表面までの距離を測定するようになっており、一方、第
2の距離センサ4は、電磁式の距離センサであって、鉄
心入りのコイルを、磁性材料からなる被塗物すに対応さ
せて、その対応距離に応じてコイルのインダクタンスが
変化するのを利用して、距離センサ4から被塗物すの表
面までの距離を測定するようになっており、この第1と
第2の距離センサ3,4に、夫々、各測定距離を電気的
な測定値として取出す検出回路5,6が接続され、各検
出回路5.6に、夫々の測定値を取出して保持するサン
プルホールド回路7.8が接続され、両サンプルホール
ド回路7.8に、夫々の保持値に基づいて演算を行なう
演算回路9が接続され、この演算回路9に演算結果を表
示する表示回路10が接続されている。In the figure, ■ is the main body of the measuring device, which is installed in front of the object to be coated, which is made of a magnetic material such as iron and has a wet coating film a formed on its surface. A first distance sensor 3 for measuring the distance to the surface of the coating film a and a second distance sensor 4 for measuring the distance to the surface of the object to be coated are attached to the main body 1 side by side. 1st
The distance sensor 3 is an optical triangulation type distance sensor, which reflects the projected light from the light emitting element on the surface of the coating film a, and uses the reflected light to detect the position provided on the side of the light emitting element. A spot light is received on the element, and the distance from the distance sensor 3 to the surface of the coating film a is measured based on the position of the spot light on the position detection element. is an electromagnetic distance sensor that uses a coil with an iron core to correspond to the object to be coated made of magnetic material, and the inductance of the coil changes according to the corresponding distance. 4 to the surface of the object to be coated, and the first and second distance sensors 3 and 4 each have a detection circuit 5 that extracts each measured distance as an electrical measurement value. , 6 are connected, and each detection circuit 5.6 is connected to a sample hold circuit 7.8 that extracts and holds each measured value. An arithmetic circuit 9 is connected to the arithmetic circuit 9, and a display circuit 10 is connected to the arithmetic circuit 9 to display the arithmetic results.
本実施例はこのような構造になり、第1の距離センサ3
で塗膜aの表面までの距離Aが測定されるとともに、第
2の距離センサ4で被塗物すの表面までの距離Bが測定
され、演算回路9において、測定値Bから測定値Aを引
く演算が行なわれて。This embodiment has such a structure, and the first distance sensor 3
The distance A to the surface of the coating film a is measured at , and the distance B to the surface of the object to be coated is measured by the second distance sensor 4.The arithmetic circuit 9 calculates the measured value A from the measured value B. A subtraction operation is performed.
その演算結果が塗膜aの厚さとして表示回路10で表示
される。The calculation result is displayed on the display circuit 10 as the thickness of the coating film a.
なお、被塗物すの表面までの距WaBを測定する第2の
距離センサ4には、被塗物が、アルミニウム、アルミニ
ウム合金、銅、磁性のないステンレス等の磁性材料以外
の金属材料の場合は、高周波電界によって金属表面に誘
起される渦電流の大きさで距離を測定する渦電流式の距
離センサを用いれば良く、また、プラスチック等の非金
属の場合は、超音波式の距離センサを用いれば良い。Note that the second distance sensor 4 that measures the distance WaB to the surface of the object to be coated is used when the object to be coated is a metal material other than a magnetic material such as aluminum, aluminum alloy, copper, or non-magnetic stainless steel. For this purpose, it is sufficient to use an eddy current type distance sensor that measures distance based on the magnitude of eddy current induced on the metal surface by a high frequency electric field, and for non-metallic materials such as plastic, an ultrasonic type distance sensor can be used. Just use it.
第2図は本発明の他の実施例を示し、第1図の実施例に
おいて、第1と第2の距離センサ3.4では、測定位置
が一致せずにずれていることから、例えば、被塗物すが
傾いた姿勢を取ったときに。FIG. 2 shows another embodiment of the present invention. In the embodiment of FIG. 1, the measurement positions of the first and second distance sensors 3.4 do not match and are shifted, so for example, When the object to be coated is in a tilted position.
塗膜厚の測定値に誤差が生じることになり、そこで、本
実施例では、塗膜aの表面までの距離を測定する第1の
距離センサ3を2個間隔をおいて取付けて、その中心に
被塗物すの表面までの距離を測定する第2の距離センサ
4を取付け、演算回路において、2つの第1の距離セン
サ3,3の測定値A1、A2の平均値を算出して、その
平均値を第2の距離センサ4の測定値Bから引き算し、
これによって塗膜aの厚さを測定するようになっており
、被塗物すが傾いていた場合にも、誤差を小さく抑えて
塗膜厚を測定することができる。This will cause an error in the measured value of the coating film thickness, so in this embodiment, two first distance sensors 3 for measuring the distance to the surface of the coating film a are installed at intervals, and the center A second distance sensor 4 for measuring the distance to the surface of the object to be coated is attached, and an arithmetic circuit calculates the average value of the measured values A1 and A2 of the two first distance sensors 3, 3. Subtract the average value from the measured value B of the second distance sensor 4,
This allows the thickness of the coating film a to be measured, and even if the object to be coated is tilted, the coating thickness can be measured with the error kept small.
また、上記とは逆に、第2の距離センサ4を2個配置し
て、その中心に第1の距離センサ3を配置する構造とし
ても良く、また、測定値の平均値を取る方の距離センサ
の数が多いほど、塗膜厚の測定誤差を小さく抑えること
ができる。In addition, contrary to the above, it is also possible to have a structure in which two second distance sensors 4 are arranged and the first distance sensor 3 is arranged in the center. The larger the number of sensors, the smaller the coating thickness measurement error can be.
第1図は本発明の一実施例の正面図及びブロック図、第
2図は他の実施例の正面図である。
a:塗膜 b:被塗物 1:本体 3:第1の距離セン
サ 4:第2の距離センサ 9:演算回路 10:表示
回路FIG. 1 is a front view and block diagram of one embodiment of the present invention, and FIG. 2 is a front view of another embodiment. a: Paint film b: Object to be coated 1: Main body 3: First distance sensor 4: Second distance sensor 9: Arithmetic circuit 10: Display circuit
Claims (1)
測定する第1の距離センサと、前記被塗物の表面までの
距離を測定する第2の距離センサとを本体に並設すると
ともに、前記第1と第2の距離センサの測定値の差を演
算して表示する演算表示装置を有することを特徴とする
塗膜厚測定装置 2 前記第1または第2の距離センサのいずれか一方を
複数個として、他方の距離センサが略中心となる位置に
配置するとともに、前記演算表示装置が、前記一方の距
離センサの測定値の平均値を算出して前記他方の距離セ
ンサの測定値との差を演算するようになつていることを
特徴とする特許請求の範囲第1項記載の塗膜厚測定装置[Claims] 1. A first distance sensor that measures the distance to the surface of the coating film formed on the surface of the object to be coated, and a second distance sensor that measures the distance to the surface of the object to be coated. Coating film thickness measuring device 2, characterized in that it has a calculation display device that calculates and displays the difference between the measured values of the first and second distance sensors. A plurality of one of the two distance sensors is disposed at a position where the other distance sensor is approximately at the center, and the calculation display device calculates the average value of the measured values of the one distance sensor. The coating thickness measuring device according to claim 1, wherein the device calculates the difference between the measured value of the other distance sensor and the measured value of the other distance sensor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP216887A JPS63169513A (en) | 1987-01-08 | 1987-01-08 | Coating film thickness measuring instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP216887A JPS63169513A (en) | 1987-01-08 | 1987-01-08 | Coating film thickness measuring instrument |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63169513A true JPS63169513A (en) | 1988-07-13 |
JPH0547042B2 JPH0547042B2 (en) | 1993-07-15 |
Family
ID=11521836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP216887A Granted JPS63169513A (en) | 1987-01-08 | 1987-01-08 | Coating film thickness measuring instrument |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63169513A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02176515A (en) * | 1988-12-28 | 1990-07-09 | Central Jidosha Kk | Paint film thickness measuring device |
EP0438360A2 (en) * | 1990-01-19 | 1991-07-24 | Mitsubishi Jukogyo Kabushiki Kaisha | Piston ring wear diagnosis device and procedure therefor |
JPH0682506U (en) * | 1993-04-28 | 1994-11-25 | 兼子興産株式会社 | Non-contact thickness gauge |
WO2006109129A1 (en) * | 2005-04-12 | 2006-10-19 | C & G S.P.A. | Device and method for measuring a thickness |
CN102482852A (en) * | 2009-08-31 | 2012-05-30 | 米其林研究和技术股份有限公司 | Method and apparatus for determining the depth of a metal feature in a rubber or elastomeric material |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58189505A (en) * | 1982-04-30 | 1983-11-05 | Hitachi Ltd | Coat thickness measuring meter |
JPS61254812A (en) * | 1985-05-08 | 1986-11-12 | Meisan Kk | Instrument for continuously measuring thickness of nonmagnetic sheet |
-
1987
- 1987-01-08 JP JP216887A patent/JPS63169513A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58189505A (en) * | 1982-04-30 | 1983-11-05 | Hitachi Ltd | Coat thickness measuring meter |
JPS61254812A (en) * | 1985-05-08 | 1986-11-12 | Meisan Kk | Instrument for continuously measuring thickness of nonmagnetic sheet |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02176515A (en) * | 1988-12-28 | 1990-07-09 | Central Jidosha Kk | Paint film thickness measuring device |
EP0438360A2 (en) * | 1990-01-19 | 1991-07-24 | Mitsubishi Jukogyo Kabushiki Kaisha | Piston ring wear diagnosis device and procedure therefor |
EP0438360A3 (en) * | 1990-01-19 | 1992-07-29 | Mitsubishi Jukogyo Kabushiki Kaisha | Piston ring wear diagnosis device and procedure therefor |
US5258930A (en) * | 1990-01-19 | 1993-11-02 | Mitsubishi Jukogyo Kabushiki Kaisha | Piston ring wear diagnostic device and procedure therefor |
JPH0682506U (en) * | 1993-04-28 | 1994-11-25 | 兼子興産株式会社 | Non-contact thickness gauge |
WO2006109129A1 (en) * | 2005-04-12 | 2006-10-19 | C & G S.P.A. | Device and method for measuring a thickness |
CN102482852A (en) * | 2009-08-31 | 2012-05-30 | 米其林研究和技术股份有限公司 | Method and apparatus for determining the depth of a metal feature in a rubber or elastomeric material |
JP2013503333A (en) * | 2009-08-31 | 2013-01-31 | ミシュラン ルシェルシュ エ テクニーク ソシエテ アノニム | Method and apparatus for determining the depth of a metal feature in a rubber or elastomeric material |
US8806930B2 (en) | 2009-08-31 | 2014-08-19 | Michelin Recherche Et Technique S.A. | Method and apparatus for determining the depth of a metal feature in a rubber or elastomeric material |
CN102482852B (en) * | 2009-08-31 | 2015-07-01 | 米其林研究和技术股份有限公司 | Method and apparatus for determining the depth of a metal feature in a rubber or elastomeric material |
Also Published As
Publication number | Publication date |
---|---|
JPH0547042B2 (en) | 1993-07-15 |
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