JPH0465659A - Outward shape inspecting method for hot member - Google Patents
Outward shape inspecting method for hot memberInfo
- Publication number
- JPH0465659A JPH0465659A JP17792790A JP17792790A JPH0465659A JP H0465659 A JPH0465659 A JP H0465659A JP 17792790 A JP17792790 A JP 17792790A JP 17792790 A JP17792790 A JP 17792790A JP H0465659 A JPH0465659 A JP H0465659A
- Authority
- JP
- Japan
- Prior art keywords
- light
- tube
- projector
- hot state
- reflected
- 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
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は鋳鉄管等の検査工程において熱間状態にある部
材の外観の検査に用いられる熱間部材の外観検査方法に
関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for inspecting the appearance of a hot member used for inspecting the appearance of a member in a hot state during an inspection process for cast iron pipes and the like.
従来の技術
従来、鋳鉄管等の検査工程においては、部材の表面に一
側から投光器で検査光を照射し、部材の表面において反
射した反射光を赤外線フィルターを介して受光器で受光
することにより、熱間状態の部材の表面から発せられる
不要な波長の光を除去し、肉眼では視認することができ
ない熱間状態にある部材の外観の検査を行っている。Conventional technology In the past, in the inspection process for cast iron pipes, etc., inspection light was irradiated onto the surface of the member from one side using a projector, and the reflected light reflected from the surface of the member was received by a light receiver via an infrared filter. , unnecessary wavelengths of light emitted from the surface of hot components are removed, and the appearance of hot components that cannot be seen with the naked eye is inspected.
発明が解決しようとする課題
しかし、上記した従来の構成によれば、赤外線フィルタ
ーを用いることにより、必要な波長の光までも弱められ
、受光器における感度が低下する問題があった。Problems to be Solved by the Invention However, according to the above-described conventional configuration, there was a problem in that the use of an infrared filter weakened even the light of a necessary wavelength, resulting in a decrease in sensitivity in the light receiver.
本発明は上記課題を解決するもので、赤外線フィルター
を用いることなく部材の表面を検査することができる熱
間部材の外観検査方法を提供することを目的とする。The present invention solves the above-mentioned problems, and an object of the present invention is to provide a method for inspecting the appearance of a hot member, by which the surface of the member can be inspected without using an infrared filter.
課題を解決するための手段
上記課題を解決するために本発明は、熱間状態の部材の
表面に一側から集光レンズを通して投光器の光を照射し
、部材の表面において反射された反射光を他側に設けた
受光器で受光する構成としたものである。Means for Solving the Problems In order to solve the above problems, the present invention irradiates the surface of a hot member with light from a projector from one side through a condensing lens, and collects the reflected light reflected on the surface of the member. The structure is such that the light is received by a light receiver provided on the other side.
作用
上記した構成により、投光器の光は集光レンズを通るこ
とによって集束され、強い光となって熱間杖態の部材の
表面に照射される。このため、投光器から照射される光
が熱間状態の部材の表面から発せられる赤外線より優り
、熱間状態の部材の表面が冷間状態の表面のように映え
る。そして、上述した状態の光が部材の表面から反射光
として反射するので、従来のように赤外線フィルターを
用いて不要な波長の光を除去する必要がなくなり、受光
器に受光される光の強さは受光器における感度を満たす
に十分なものとなる。Operation With the above-described configuration, the light from the projector is focused by passing through the condenser lens, and is irradiated onto the surface of the hot wand-shaped member as a strong light. Therefore, the light emitted from the projector is superior to the infrared rays emitted from the surface of the member in the hot state, and the surface of the member in the hot state looks like the surface in the cold state. Since the light in the above-mentioned state is reflected from the surface of the member as reflected light, there is no need to remove unnecessary wavelengths of light using an infrared filter as in the past, and the intensity of the light received by the receiver is reduced. is sufficient to satisfy the sensitivity of the photoreceiver.
実施例
以下本発明の一実施例を図面に基づいて説明する。第１
図において、管１は鋳鉄管等で熱間状態にある。そして
、管１の上方には管軸心方向の一側に位置して投光器２
が配置されており、投光器２はハロゲンランプを用いて
いる。また、投光器２は管軸心方向に沿った斜め下方に
向けて光を投光するように設けられており、投光器２の
前方には集光レンズ３が配置されている。さらに、管１
の上方には管軸心方向の他側に位置して受光器４が配置
されており、受光器４は管１の表面で反射する投光器２
からの反射光を受光するように管軸心方向に沿った斜め
下方に向いている。EXAMPLE An example of the present invention will be described below based on the drawings. 1st
In the figure, the pipe 1 is a cast iron pipe or the like and is in a hot state. Above the tube 1, a projector 2 is located on one side in the direction of the tube axis.
are arranged, and the projector 2 uses a halogen lamp. Further, the projector 2 is provided so as to project light obliquely downward along the tube axis direction, and a condenser lens 3 is disposed in front of the projector 2. Furthermore, tube 1
A light receiver 4 is arranged above the other side in the tube axis direction, and the light receiver 4 is connected to a light emitter 2 that is reflected by the surface of the tube 1.
The tube is oriented diagonally downward along the axis of the tube so as to receive reflected light from the tube.
以下、上記構成における作用について説明する。Hereinafter, the effects of the above configuration will be explained.
投光器２から投光する光を集光レンズ３を通して管１の
表面に照射し、管１の表面で反射した反射光を受光器４
で受光する。このとき、投光器２の光は集光レンズ３を
通ることによって集束され、強い光となって熱間状態の
管１の表面に照射される。このため、投光器２から照射
されるハロゲンランプの光が熱間状態の管１の表面から
発せられる赤外線より優り、熱間状態の管１の表面が冷
間状態の表面のように映えり、肉眼においても視認可能
な状態となる。そして、上述した状態の光が管１の表面
から反射光として反射するので、従来の−ように赤外線
フィルターを用いて不要な波長の光を除去する必要がな
くなり、受光器４に受光される光の強さは受光器４にお
ける感度を満たすに十分なものとなる。The light emitted from the projector 2 is irradiated onto the surface of the tube 1 through the condensing lens 3, and the reflected light reflected from the surface of the tube 1 is sent to the receiver 4.
receives light. At this time, the light from the projector 2 is focused by passing through the condenser lens 3, and is irradiated to the surface of the tube 1 in the hot state as a strong light. Therefore, the light from the halogen lamp emitted from the floodlight 2 is superior to the infrared rays emitted from the surface of the tube 1 in the hot state, and the surface of the tube 1 in the hot state looks like the surface in the cold state, and to the naked eye. It becomes visible even in . Since the light in the above-mentioned state is reflected as reflected light from the surface of the tube 1, there is no need to remove unnecessary wavelength light using an infrared filter as in the conventional method, and the light received by the light receiver 4 is The intensity is sufficient to satisfy the sensitivity of the photoreceiver 4.
発明の効果
以上述べたように本発明によれば、投光器の光を集光レ
ンズを通して熱間状態の部材の表面に照射することによ
り、投光器から照射される光が熱間状態の部材の表面か
ら発せられる赤外線より優り、熱間状態の部材の表面が
冷間状態の表面のように映えさせることができ、従来の
ように赤外線フィルターを用いて不要な波長の光を除去
する必要がなくなり、受光器に受光される光の強さを十
分なものとすることできる。Effects of the Invention As described above, according to the present invention, the light emitted from the projector is directed from the surface of the member in the hot state by irradiating the surface of the member in the hot state with the light from the projector through the condensing lens. It is superior to the emitted infrared rays, and can make the surface of a hot component look like a cold surface, eliminating the need to remove unnecessary wavelengths of light using an infrared filter as in the past. The intensity of the light received by the vessel can be made sufficient.
第１図は本発明の一実施例を示す全体構成図である。
１・・・管、２・・・投光器、３・・・集光レンズ、４
・・・受光器。FIG. 1 is an overall configuration diagram showing an embodiment of the present invention. 1... tube, 2... floodlight, 3... condensing lens, 4
...Receiver.
Claims (1)
て投光器の光を照射し、部材の表面において反射された
反射光を他側に設けた受光器で受光することを特徴とす
る熱間部材の外観検査方法。1. Heat treatment characterized by irradiating the surface of a hot component with light from a projector from one side through a condensing lens, and receiving the reflected light from the surface of the component with a light receiver provided on the other side. Appearance inspection method for intermediate parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17792790A JPH0465659A (en) | 1990-07-05 | 1990-07-05 | Outward shape inspecting method for hot member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17792790A JPH0465659A (en) | 1990-07-05 | 1990-07-05 | Outward shape inspecting method for hot member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0465659A true JPH0465659A (en) | 1992-03-02 |
Family
ID=16039502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17792790A Pending JPH0465659A (en) | 1990-07-05 | 1990-07-05 | Outward shape inspecting method for hot member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0465659A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5892937A (en) * | 1981-11-30 | 1983-06-02 | Yoshio Ueshima | Automatic inspecting device for surface flaw |
-
1990
- 1990-07-05 JP JP17792790A patent/JPH0465659A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5892937A (en) * | 1981-11-30 | 1983-06-02 | Yoshio Ueshima | Automatic inspecting device for surface flaw |
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