JPH06123606A - Detection of overlap part of striplike materials - Google Patents
Detection of overlap part of striplike materialsInfo
- Publication number
- JPH06123606A JPH06123606A JP4271624A JP27162492A JPH06123606A JP H06123606 A JPH06123606 A JP H06123606A JP 4271624 A JP4271624 A JP 4271624A JP 27162492 A JP27162492 A JP 27162492A JP H06123606 A JPH06123606 A JP H06123606A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- strips
- distance
- plate thickness
- line
- 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
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、たとえば金属ストリッ
プやシート状プラスチックあるいは紙などが連続的に処
理されるプロセスラインにおいて溶接などで接続される
帯状材の重ね合わせ部の検出方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting overlapping portions of strip-shaped members which are connected by welding or the like in a process line where metal strips, sheet-shaped plastics, papers, etc. are continuously processed.
【０００２】[0002]
【従来の技術】ここで、鉄鋼の圧延プロセスラインを例
にして説明する。ストリップを連続的に処理するプロセ
スラインでは、先行するストリップの後端部と後行する
ストリップの先端部を重ね合わせて、たとえばナローラ
ップシームウエルダやスポットウエルダによって溶接接
続がなされ、連続処理がなされている。そして、処理設
備ごとにその溶接点が検出されて、その溶接部の位置で
たとえばピンチロールの速度を落とすとか、あるいはロ
ールギャップを加減するなどの処置がとられるのであ
る。2. Description of the Related Art Here, a steel rolling process line will be described as an example. In a process line for continuously processing strips, the trailing end of the preceding strip and the leading end of the trailing strip are overlapped, and weld connection is made by, for example, a narrow lap seam welder or spot welder, and continuous treatment is performed. There is. Then, the welding point is detected for each processing facility, and at the position of the welding portion, for example, the speed of the pinch roll is reduced, or the roll gap is adjusted.
【０００３】このような溶接点の検出する方法として
は、溶接部の付近にパンチャを用いてたとえば10mmφ程
度の穴を明けて（たとえば実開平１−159920号公報参
照）、その穴部を光電的に検出する手段とか、あるいは
溶接部の磁性の変化を検出する方法や、Ｘ線厚み計ある
いはγ線厚み計などの板厚計を利用して厚み変化位置を
溶接点と認識する方法などがある。As a method of detecting such a welding point, a puncher is used in the vicinity of the welded portion to form a hole of, for example, about 10 mmφ (see, for example, Japanese Utility Model Laid-Open No. 1-159920), and the hole is photoelectrically converted. Means for detecting the change in magnetism of the welded portion, and a method for recognizing the thickness change position as a welding point by using a plate thickness gauge such as an X-ray thickness gauge or a γ-ray thickness gauge. .
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記し
たような従来の溶接点検出方法にはそれぞれ欠点があ
る。すなわち、穴明方式の場合は高価なパンチャや光電
式検出器をプロセスラインに複数台取付ける必要がある
から不経済である。また、磁性変化を検出する方法は信
頼性に欠けて実用的ではない。さらに、板厚計を利用す
る方法は設備費が高価になり、かつ作業者の安全衛生面
にも配慮する必要がある。However, each of the conventional welding point detecting methods described above has drawbacks. That is, the drilling method is uneconomical because it is necessary to attach a plurality of expensive punchers and photoelectric detectors to the process line. Further, the method of detecting the magnetic change is not practical because of lack of reliability. Furthermore, the method of using a plate thickness meter requires high equipment costs, and it is necessary to consider the safety and health of workers.
【０００５】本発明は、上記のような従来技術の有する
課題を解決すべくしてなされたものであって、安価で精
度よく溶接点を検出し得る帯状材の重ね合わせ部の検出
方法を提供することを目的とする。The present invention has been made in order to solve the problems of the prior art as described above, and provides a method for detecting an overlapping portion of strip-shaped members which is inexpensive and can detect a welding point with high accuracy. The purpose is to
【０００６】[0006]
【課題を解決するための手段】本発明は、帯状材が連続
的に処理されるプロセスラインにおいて、先行材の後端
部と後行材の先端部とを重ね合わせて接続した位置を検
出する方法であって、前記ラインの上面から前記帯状材
の進行方向に所定の間隔をおいて上表面までの距離を測
定する工程と、得られた２つの測定値を用いて前記帯状
材の板厚を演算する工程と、得られた板厚の演算値の大
きさから前記帯状材の重ね合わせ部位置を判定する工程
と、からなることを特徴とする帯状材の重ね合わせ部の
検出方法である。SUMMARY OF THE INVENTION The present invention detects a position where a trailing end of a preceding material and a leading end of a following material are overlapped and connected to each other in a process line in which a belt-shaped material is continuously processed. A method of measuring a distance from an upper surface of the line to an upper surface at a predetermined interval in a traveling direction of the strip, and a plate thickness of the strip using the obtained two measured values. And a step of determining the overlapping portion position of the strip-shaped material from the magnitude of the calculated value of the obtained plate thickness, which is a method of detecting the overlapping portion of the strip-shaped material. .
【０００７】なお、前記ラインの下面から前記帯状材の
進行方向に所定の間隔をおいて前記帯状材の下表面まで
の距離を測定するようにしてもよい。The distance from the lower surface of the line to the lower surface of the strip may be measured at a predetermined interval in the traveling direction of the strip.
【０００８】[0008]
【作 用】本発明によれば、ラインの上方または下方
で、帯状材の進行方向に所定の間隔で配置した２台の距
離計を用いて帯状材までの距離を測定し、簡単な演算手
段を用いて判定するようにしたので、帯状材のばたつき
などによる変位量の変化の影響を受けることなく、正確
に帯状材の重ね合わせ部を検出することができる。[Operation] According to the present invention, the distance to the strip is measured by using two distance meters arranged above or below the line at a predetermined interval in the traveling direction of the strip, and a simple calculation means is provided. Since the determination is made by using, it is possible to accurately detect the overlapping portion of the strip-shaped members without being affected by the change in the displacement amount due to the flapping of the strip-shaped members.
【０００９】[0009]
【実施例】以下に、本発明の実施例について、図面を参
照して詳しく説明する。図１は、本発明に係る圧延プロ
セスラインにおける一実施例を示す流れ図である。図に
おいて、１は先行ストリップ、２は後行ストリップ、３
はこれらのストリップ１，２を搬送する搬送ローラ、４
はライン上面の上流側に取付けられてストリップの上表
面までの距離を測定するたとえばレーザ変位計などの第
１の距離計、５はライン上面に第１の距離計４から間隔
がＬとされる上流側に設置されてストリップの上表面ま
での距離を測定するやはり反射式レーザ変位計などの第
２の距離計、６は板厚演算器、７は段差比較器、８は重
ね合わせ部判定回路、９はタイマ設定器である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a flow chart showing an embodiment in a rolling process line according to the present invention. In the figure, 1 is a leading strip, 2 is a trailing strip, and 3
Is a transport roller for transporting these strips 1, 2.
Is a first distance meter, such as a laser displacement meter, which is mounted on the upstream side of the upper surface of the line and measures the distance to the upper surface of the strip. 5 is a distance L from the first distance meter 4 on the upper surface of the line. A second distance meter, such as a reflection laser displacement meter, which is installed on the upstream side and measures the distance to the upper surface of the strip, 6 is a plate thickness calculator, 7 is a step difference comparator, and 8 is a superposition section determination circuit. , 9 are timer setters.
【００１０】このように構成された重ね合わせ部検出装
置の動作について、以下に説明する。ここで、先行スト
リップ１の板厚をｔ1 (mm)とし、後行ストリップ２の板
厚をｔ2 (mm)とする。また第１の距離計４と第２の距離
計５との間の取付け間隔をＬ(mm)とし、第１の距離計４
によるストリップ上表面までの測定距離をｘ1 (mm)、第
２の距離計５によるストリップ上表面までの測定距離を
ｘ2 (mm)とする。The operation of the superposition portion detecting device having the above-mentioned structure will be described below. Here, the plate thickness of the leading strip 1 is t 1 (mm), and the plate thickness of the trailing strip 2 is t 2 (mm). Further, the mounting distance between the first distance meter 4 and the second distance meter 5 is L (mm), and the first distance meter 4
The distance measured to the upper surface of the strip by x is 1 mm, and the distance measured to the upper surface of the strip by the second distance meter 5 is x 2 mm.
【００１１】まず、第１の距離計４と第２の距離計５で
同時にストリップまでの距離を測定して板厚演算器６に
入力させる。そして、この板厚演算器６において、スト
リップの重ね合わせ部における段差量Δｔ(mm)は下記
(1) 式で求められる。 Δｔ＝ｘ2 −ｘ1 ─────(1) 段差比較器７において、この段差量Δｔが所定の範囲内
にあるかどうかを下記(2) 式により判別する。First, the distances to the strips are simultaneously measured by the first distance meter 4 and the second distance meter 5 and are input to the plate thickness calculator 6. Then, in the plate thickness calculator 6, the step amount Δt (mm) at the overlapping portion of the strip is
It is calculated by the equation (1). Δt = x 2 −x 1 ────── (1) In the step difference comparator 7, it is judged by the following equation (2) whether or not this step difference Δt is within a predetermined range.
【００１２】 αｔ1 ＜Δｔ＜βｔ1 ─────(2) ここで、α，βは板厚のばらつきを考慮した係数であ
り、それぞれたとえば ０＜α＜１ ─────(3) １＜β＜1.5 ─────(4) の範囲で任意に設定される。Αt 1 <Δt <βt 1 ─────── (2) Here, α and β are coefficients in consideration of variations in plate thickness, for example, 0 <α <1 ───── (3 ) 1 <β <1.5 ────── (4) It is set arbitrarily.
【００１３】つぎに、重ね合わせ部判定回路８におい
て、段差比較器７での比較結果から得られた重ね合わせ
部の位置の妥当性を判断する。すなわち、重ね合わせ部
判定回路８には、タイマ設定器９によって下記(5) 式に
よって求められた必要デレー時間ｔd が設定される。 ｔd ＝γＬ／ｖ ─────(5) ここで、ｖはライン速度（m/min)であり、γは係数であ
る。なお、このγは、 0.5 ＜γ＜１ ─────(6) の範囲での任意の値とされる。Next, the superposition part determination circuit 8 judges the validity of the position of the superposition part obtained from the comparison result of the step difference comparator 7. That is, the necessary delay time t d obtained by the equation (5) below is set by the timer setting unit 9 in the superposition unit determination circuit 8. t d = γL / v ────── (5) Here, v is the line speed (m / min), and γ is a coefficient. This γ is an arbitrary value within the range of 0.5 <γ <1 ────── (6).
【００１４】そして、重ね合わせ部判定回路８におい
て、第２の距離計５で測定されたストリップの位置を、
その後ｔd の時間だけ遅れたタイミングで第１の距離計
４によって再測定する。これによって、もし第２の距離
計５での測定時にストリップにばたつきがあっても、第
１の距離計４での測定値によって相殺することができる
から、正確に重ね合わせ部の位置を判定することができ
る。その判定結果、重ね合わせ部であることを出力す
る。The position of the strip measured by the second rangefinder 5 in the superposition section determination circuit 8 is
After that, the measurement is performed again by the first rangefinder 4 at a timing delayed by the time t d . With this, even if the strip flutters during the measurement with the second distance meter 5, it can be canceled by the measurement value with the first distance meter 4, so that the position of the overlapping portion can be accurately determined. be able to. As a result of the determination, it is output that it is the superposition unit.
【００１５】なお、上記実施例において、第１の距離計
４と第２の距離計５をライン上部に設置するとして説明
したが、本発明はこれに限定されるものではなく、環境
条件がよければラインの下方に取付けるようにしても同
様の作用効果が得られる。また、上記実施例における板
厚演算器６や段差比較器７，重ね合わせ部判定回路８
は、それぞれ独立した単体機器として説明したが、たと
えば小型コンピュータなどを用いるようにすれば、さら
にコンパクトに構成することが可能である。In the above embodiment, the first range finder 4 and the second range finder 5 are installed above the line, but the present invention is not limited to this, and environmental conditions can be avoided. Even if it is installed below the line, the same effect can be obtained. Further, the plate thickness calculator 6, the step comparator 7, and the overlapping portion determination circuit 8 in the above embodiment
Have been described as independent individual devices, but can be made more compact by using, for example, a small computer.
【００１６】さらに、上記実施例は圧延プロセスライン
に適用するとして説明したが、本発明はこれに限るもの
ではなく、たとえばシート状プラスチックあるいは紙な
どが連続的に処理されるプロセスラインに適用し得るこ
とはいうまでもない。Further, although the above embodiment has been described as being applied to a rolling process line, the present invention is not limited to this, and can be applied to a process line in which, for example, sheet plastic or paper is continuously processed. Needless to say.
【００１７】[0017]
【発明の効果】以上説明したように、本発明によれば、
２台の距離計を用いることによって、簡単な機器構成で
帯状材の重ね合わせ部を正確に検出することができるか
ら、設備費の節減ならびに装置の信頼性の向上などの効
果を奏する。As described above, according to the present invention,
By using the two rangefinders, the overlapping portion of the band-shaped members can be accurately detected with a simple device configuration, and thus there are effects such as a reduction in equipment cost and an improvement in device reliability.
【図１】本発明に係る圧延プロセスラインにおける一実
施例を示す流れ図である。FIG. 1 is a flow chart showing an embodiment of a rolling process line according to the present invention.
１ 先行ストリップ ２ 後行ストリップ ３ 搬送ローラ ４ 第１の距離計 ５ 第２の距離計 ６ 板厚演算器 ７ 段差比較器 ８ 重ね合わせ部判定回路 ９ タイム設定器 10 重ね合わせ部位置表示器 1 Leading Strip 2 Trailing Strip 3 Conveying Roller 4 First Distance Meter 5 Second Distance Meter 6 Plate Thickness Calculator 7 Step Difference Comparator 8 Overlay Judgment Circuit 9 Time Setting Device 10 Overlay Position Indicator
───────────────────────────────────────────────────── フロントページの続き (72)発明者 千田 敏之 千葉県千葉市中央区川崎町１番地 川崎製 鉄株式会社千葉製鉄所内 (72)発明者 縄田 雄次 千葉県千葉市中央区川崎町１番地 川崎製 鉄株式会社千葉製鉄所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toshiyuki Senda, 1 Kawasaki-machi, Chuo-ku, Chiba-shi, Chiba Kawasaki Steel Co., Ltd. Chiba Works (72) Yuji Nawata 1 Kawasaki-cho, Chuo-ku, Chiba Chiba Prefecture Kawasaki Chiba Steel Works, Ltd.
Claims (2)
ラインにおいて、先行材の後端部と後行材の先端部とを
重ね合わせて接続した位置を検出する方法であって、前
記ラインの上面から前記帯状材の進行方向に所定の間隔
をおいて上表面までの距離を測定する工程と、得られた
２つの測定値を用いて前記帯状材の板厚を演算する工程
と、得られた板厚の演算値の大きさから前記帯状材の重
ね合わせ部位置を判定する工程と、からなることを特徴
とする帯状材の重ね合わせ部の検出方法。1. A method for detecting a position where a trailing end portion of a preceding material and a leading end portion of a following material are overlapped and connected to each other in a process line in which a strip-shaped material is continuously processed, the method comprising: The step of measuring the distance from the upper surface to the upper surface at a predetermined distance in the traveling direction of the strip, and the step of calculating the plate thickness of the strip using the two obtained measurement values. And a step of determining the position of the overlapping portion of the band-shaped material from the magnitude of the calculated value of the plate thickness, the method for detecting the overlapping portion of the band-shaped material.
行方向に所定の間隔をおいて前記帯状材の下表面までの
距離を測定することを特徴とする請求項１記載の帯状材
の重ね合わせ部の検出方法。2. The superposition of strips according to claim 1, wherein the distance from the lower surface of the line to the lower surface of the strips is measured at a predetermined interval in the traveling direction of the strips. Part detection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4271624A JPH06123606A (en) | 1992-10-09 | 1992-10-09 | Detection of overlap part of striplike materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4271624A JPH06123606A (en) | 1992-10-09 | 1992-10-09 | Detection of overlap part of striplike materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06123606A true JPH06123606A (en) | 1994-05-06 |
Family
ID=17502672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4271624A Pending JPH06123606A (en) | 1992-10-09 | 1992-10-09 | Detection of overlap part of striplike materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06123606A (en) |
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-
1992
- 1992-10-09 JP JP4271624A patent/JPH06123606A/en active Pending
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| JP2020504038A (en) * | 2017-01-18 | 2020-02-06 | パックサイズ，エルエルシー | Converter with folding detection mechanism |
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| US11305903B2 (en) | 2018-04-05 | 2022-04-19 | Avercon BVBA | Box template folding process and mechanisms |
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