JP6102840B2 - Method and apparatus for managing film removal width of laminated steel sheet - Google Patents
Method and apparatus for managing film removal width of laminated steel sheet Download PDFInfo
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- 229910000576 Laminated steel Inorganic materials 0.000 title claims description 53
- 238000000034 method Methods 0.000 title claims description 6
- 230000007547 defect Effects 0.000 claims description 106
- 229910000831 Steel Inorganic materials 0.000 claims description 39
- 239000010959 steel Substances 0.000 claims description 39
- 238000001514 detection method Methods 0.000 claims description 37
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 230000002950 deficient Effects 0.000 claims description 9
- 238000007726 management method Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 7
- 238000002679 ablation Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 4
- 239000005001 laminate film Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 201000004384 Alopecia Diseases 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000003676 hair loss Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Description
本発明は、ラミネート鋼板製造ラインにおいて、ラミネートフィルム（以降、フィルムとも称する）が貼られていない鋼板幅であるフィルム除け幅を求めてフィルム貼付位置の公差判定および欠陥マーク検出を行うラミネート鋼板のフィルム除け幅管理方法および装置に関するものである。 The present invention relates to a laminated steel sheet film for determining tolerance of a film application position and detecting a defect mark by obtaining a film removal width which is a steel sheet width to which a laminated film (hereinafter also referred to as a film) is not attached in a laminated steel sheet production line. The present invention relates to a width management method and apparatus.
従来、熱間圧延や冷間圧延を行った鋼板には、ヘゲやロール疵等の疵、さらにピンホール等といった種々の欠陥部（以下、欠陥部と称する）が存在し、これらの欠陥部を全てなくして鋼板を製造することは困難である。そこで、鋼材メーカーでは、除去しきれなかった、鋼板に存在する欠陥部の長手位置情報をデータシート等の紙情報や電子データとして需要者に提供し、需要者にて欠陥部の除去を行ってもらっている。 Conventionally, steel sheets that have been hot-rolled or cold-rolled have various defect portions (hereinafter referred to as defect portions) such as wrinkles such as baldness and roll flaws, and pinholes, and these defect portions. It is difficult to manufacture a steel plate without all of the above. Therefore, the steel material manufacturer provides the customer with the longitudinal position information of the defective part that exists in the steel sheet, which could not be removed, as paper information such as data sheets or electronic data, and the customer removes the defective part. I have received it.
鋼板の表面にフィルムを貼ったラミネート鋼板を製造する上では、製造のために各種の製造プロセスが存在する。ラミネートフィルムを貼る前後の各種製造プロセスにおいては、鋼板表面の性状が異なり、検出すべき欠陥もそれぞれ異なる。そのため、各種製造プロセスの中央区間や出側区間といった各区間にそれぞれ各欠陥を検出する為の検査装置を配置し、鋼板の表裏の両面に存在する疵やピンホール等の欠陥を各区間で検出している。 In manufacturing a laminated steel sheet in which a film is attached to the surface of the steel sheet, various manufacturing processes exist for manufacturing. In various manufacturing processes before and after laminating the laminate film, the properties of the steel sheet surface are different, and the defects to be detected are also different. Therefore, an inspection device is installed in each section such as the central section and the outgoing section of various manufacturing processes to detect defects such as wrinkles and pinholes on both sides of the steel sheet in each section. doing.
ラミネート鋼板製造ラインでは、各区間で検出された欠陥情報をもとに、鋼板の欠陥部にマーキングを行っている。そして、需要者へ提供するラミネート鋼板を所定の長さに切断する切断ラインでは、欠陥マーキング検出装置が設置されており、切断された鋼板のうち、欠陥マークが付された鋼板を除去するようにしている。 In the laminated steel plate production line, marking is performed on the defective portion of the steel plate based on the defect information detected in each section. In the cutting line for cutting the laminated steel sheet to be provided to the customer to a predetermined length, a defect marking detection device is installed, and the steel sheet with the defect mark is removed from the cut steel sheet. ing.
各種製造プロセスの欠陥検出位置に欠陥マーキングを行うには、各区間のそれぞれに欠陥マーキング装置を配置し、中央区間の欠陥検出信号は中央区間の欠陥マーキング装置へ、出側区間の欠陥検出信号は出側区間の欠陥マーキング装置へ送出している。 In order to perform defect marking at the defect detection position in various manufacturing processes, a defect marking device is arranged in each section, the defect detection signal in the center section is sent to the defect marking device in the center section, and the defect detection signal in the exit section is It is sent to the defect marking device in the exit section.
欠陥の種類によっては、需要者の欠陥部に対する選別対応が異なることがあるため、例えば欠陥マーキングの一例として、欠陥種に応じてドットパターンを変化させ、「軽欠陥マーク」「重欠陥マーク」の２種のマークを印字するようにしている。そして、需要者では、ドットパターンの面積を検出し、しきい値に差を設定することで、「軽欠陥マーク」「重欠陥マーク」の２種のマークの判別を行なっている。 Depending on the type of defect, the customer's sorting response to the defective part may differ. For example, as an example of defect marking, the dot pattern is changed according to the defect type, and the “light defect mark” and “heavy defect mark” Two types of marks are printed. The consumer detects the area of the dot pattern and sets a difference in the threshold value, thereby discriminating two types of marks, “light defect mark” and “heavy defect mark”.
例えば、特許文献１に開示の技術においては、欠陥マーキング制御装置は、欠陥検査装置からの欠陥検出信号と、ライン制御装置の速度信号に基づいて、各区間に設置されている欠陥マーキング装置へマーキング指令を送出する。そして、欠陥マーキング装置は、欠陥検出箇所に欠陥部の存在を表示する欠陥マーキングを行う。そして、欠陥位置収集装置は、欠陥検査装置の欠陥検出信号とライン制御装置の速度信号に基づいて、鋼板に存在する欠陥マークについて製品コイル単位に長手位置管理を行う。 For example, in the technique disclosed in Patent Document 1, the defect marking control apparatus performs marking on the defect marking apparatus installed in each section based on the defect detection signal from the defect inspection apparatus and the speed signal of the line control apparatus. Send a command. Then, the defect marking device performs defect marking that displays the presence of a defective portion at a defect detection location. And a defect position collection apparatus performs longitudinal position management for every product coil about the defect mark which exists in a steel plate based on the defect detection signal of a defect inspection apparatus, and the speed signal of a line control apparatus.
しかしながら、特許文献１に記載の技術を、ラミネート鋼板製造ラインに適用し、欠陥検出箇所へ欠陥マーキングを行う場合には、以下の問題点がある。 However, when the technique described in Patent Document 1 is applied to a laminated steel sheet production line and defect marking is performed on a defect detection location, there are the following problems.
ラミネート鋼板製造ラインの出側にＣＣＤカメラを設置し、フィルムと鋼板の輝度差と、鋼板エッジ部と鋼板が存在しない部分との輝度差を検出することで、フィルムが貼られていない部分の幅であるフィルム除け幅を求め、これにより鋼板に貼られたフィルムが決められた貼付位置範囲に入っているかどうかのフィルム貼付位置の公差判定を行う。 Install a CCD camera on the exit side of the laminated steel sheet production line, and detect the difference in brightness between the film and the steel sheet, and the difference in brightness between the steel sheet edge and the part where the steel sheet does not exist. The film affixing width is obtained, and the tolerance of the film affixing position is determined as to whether or not the film affixed to the steel sheet is within the determined affixing position range.
しかしながら、マーキングした欠陥マークがフィルムエッジ部にかかる場合には、欠陥マークと鋼板の輝度差を検出してしまい、フィルム除け幅を誤検出（図３を参照して後述）することによる正しいフィルム貼付位置の公差判定ができないという問題点がある。 However, when the marked defect mark is applied to the film edge portion, a difference in luminance between the defect mark and the steel plate is detected, and a correct film sticking by erroneously detecting the film removal width (described later with reference to FIG. 3). There is a problem that the tolerance of the position cannot be determined.
本発明は、上記問題に鑑みてなされたものであって、ラミネート鋼板に付された欠陥マークがフィルムエッジ部にかかる場合であっても、フィルム除け幅の誤検出を回避し正しいフィルム貼付位置の公差判定および欠陥マーク検出をすることができる、ラミネート鋼板のフィルム除け幅管理方法および装置を提供することを課題とする。 The present invention has been made in view of the above problems, and even when a defect mark attached to a laminated steel sheet is applied to the film edge portion, it is possible to avoid erroneous detection of the film removal width and to correct the film application position. It is an object of the present invention to provide a method and an apparatus for managing a film removal width of a laminated steel sheet, which can perform tolerance determination and defect mark detection.
上記課題は、以下の発明によって解決できる。
［１］ラミネート鋼板製造ラインにおいて、欠陥マークを付したラミネート鋼板を幅方向に撮像した画像に基づいてフィルムが貼られていない部分の幅であるフィルム除け幅を求めてフィルム貼付位置の公差判定および欠陥マーク検出を行う、ラミネート鋼板のフィルム除け幅管理方法であって、
前記画像の輝度分布から前記ラミネート鋼板の幅方向両端の一端側および他端側のフィルム除け幅Ｌｍｏ、Ｌｍｄをそれぞれ求め、
鋼板幅Ｌｓおよびフィルム幅Ｌｆから、（Ｌｓ−Ｌｆ）／２との計算で求まる端部幅Ｌｇと、予め設定した所定の許容値αによって、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合には、欠陥マーク検出と判定し、以下のフィルム貼付位置の公差判定を行わず、
また逆に、「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしていない場合には、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≦Ｌｇ−α」の条件を共に満たしている場合に、または、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≦Ｌｇ−α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合に、フィルム貼付位置の公差判定不合格と判定することを特徴とするラミネート鋼板のフィルム除け幅管理方法。
The above problems can be solved by the following invention.
[1] In a laminated steel sheet production line, a film affixing position tolerance determination is performed by obtaining a film ablation width that is a width of a portion where a film is not affixed based on an image obtained by imaging a laminated steel sheet with a defect mark in a width direction; Defect mark detection, a method for managing the width of a laminated steel sheet film,
From the luminance distribution of the image, obtain the film removal widths Lmo and Lmd on one end side and the other end side of the both ends in the width direction of the laminated steel sheet,
From the steel plate width Ls and the film width Lf, the end width Lg obtained by calculation of (Ls−Lf) / 2 and a predetermined allowable value α set in advance,
The Lmo and Lmd are
When both the conditions of “Lmo ≧ Lg + α” and “Lmd ≧ Lg + α” are satisfied, it is determined that a defect mark has been detected, and the following tolerance determination of the film application position is not performed.
Conversely, if both the conditions of “Lmo ≧ Lg + α” and “Lmd ≧ Lg + α” are not satisfied,
The Lmo and Lmd are
When both the conditions of “Lmo ≧ Lg + α” and “Lmd ≦ Lg−α” are satisfied, or
The Lmo and Lmd are
A film removal width management method for laminated steel sheets, characterized in that, when both of the conditions of “Lmo ≦ Lg−α” and “Lmd ≧ Lg + α” are satisfied, it is determined that the tolerance determination of the film application position is failed.
［２］ラミネート鋼板製造ラインにおいて、欠陥マークを付したラミネート鋼板を幅方向に撮像した画像に基づいてフィルムが貼られていない部分の幅であるフィルム除け幅を求めてフィルム貼付位置の公差判定および欠陥マーク検出を行う、ラミネート鋼板のフィルム除け幅管理装置であって、
鋼板の表裏の両面にフィルムを貼付するフィルム貼付装置と、
フィルム貼付したラミネート鋼板の欠陥部を検出する欠陥検出装置と、
欠陥検出信号とラミネート鋼板速度信号に基づいてマーキング指令を送出する欠陥マーキング制御装置と、
マーキング指令を受け、欠陥を検出した長手位置箇所へ欠陥部分を表示する欠陥マークをマーキングする欠陥マーキング装置と、
ラミネート鋼板を幅方向に撮像するＣＣＤカメラと、
撮像した画像を画像処理し、ラミネート鋼板幅方向におけるフィルム除け幅を検出し、ラミネート鋼板全長にわたるフィルム貼付位置の公差判定および欠陥マーク検出を行う画像判定装置とを具備し、
該画像判定装置では、
前記画像の輝度分布から前記ラミネート鋼板の幅方向両端の一端側および他端側のフィルム除け幅Ｌｍｏ、Ｌｍｄをそれぞれ求め、
鋼板幅Ｌｓおよびフィルム幅Ｌｆから、（Ｌｓ−Ｌｆ）／２との計算で求まる端部幅Ｌｇと、予め設定した所定の許容値αによって、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合には、欠陥マーク検出と判定し、以下のフィルム貼付位置の公差判定を行わず、
また逆に、「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしていない場合には、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≦Ｌｇ−α」の条件を共に満たしている場合に、または、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≦Ｌｇ−α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合に、フィルム貼付位置の公差判定不合格と判定するプログラムを有することを特徴とするラミネート鋼板のフィルム除け幅管理装置。
[2] In a laminated steel sheet production line, a film affixing position tolerance determination is performed by obtaining a film ablation width, which is a width of a portion where no film is affixed, based on an image obtained by imaging a laminated steel sheet with a defect mark in the width direction; It is a film removal width management device for laminated steel sheets that performs defect mark detection,
A film sticking device for sticking films on both sides of the steel sheet;
A defect detection device for detecting a defective portion of a laminated steel sheet with a film attached thereto;
A defect marking control device for sending a marking command based on the defect detection signal and the laminated steel plate speed signal;
A defect marking device that receives a marking command and marks a defect mark that displays a defective portion at a longitudinal position where a defect is detected;
A CCD camera for imaging a laminated steel sheet in the width direction;
Image processing is performed on the captured image, and a film removal width in the laminated steel sheet width direction is detected, and an image determination apparatus that performs tolerance determination and defect mark detection of a film sticking position over the entire length of the laminated steel sheet,
In the image determination apparatus,
From the luminance distribution of the image, obtain the film removal widths Lmo and Lmd on one end side and the other end side of the both ends in the width direction of the laminated steel sheet,
From the steel plate width Ls and the film width Lf, the end width Lg obtained by calculation of (Ls−Lf) / 2 and a predetermined allowable value α set in advance,
The Lmo and Lmd are
When both the conditions of “Lmo ≧ Lg + α” and “Lmd ≧ Lg + α” are satisfied, it is determined that a defect mark has been detected, and the following tolerance determination of the film application position is not performed.
Conversely, if both the conditions of “Lmo ≧ Lg + α” and “Lmd ≧ Lg + α” are not satisfied,
The Lmo and Lmd are
When both the conditions of “Lmo ≧ Lg + α” and “Lmd ≦ Lg−α” are satisfied, or
The Lmo and Lmd are
A film removal width management device for laminated steel sheets, characterized by having a program for judging that the tolerance judgment of the film sticking position is failed when both of the conditions of “Lmo ≦ Lg−α” and “Lmd ≧ Lg + α” are satisfied. .
本発明によれば、フィルム除け幅に基づく独自のロジックにより、ラミネート鋼板に付された欠陥マークがフィルムエッジ部にかかる場合であっても、フィルム除け幅の誤検出を回避ようにしたので、正しいフィルム貼付位置の公差判定および欠陥マーク検出をすることができる。 According to the present invention, by the unique logic based on the film removal width, even when the defect mark attached to the laminated steel plate is applied to the film edge portion, the erroneous detection of the film removal width is avoided. It is possible to determine the tolerance of the film application position and detect the defect mark.
以下、図面を参照して、本発明を実施するための形態について説明する。図１は、ラミネート鋼板製造ラインの構成例を示す図である。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of a laminated steel sheet production line.
図中、１はフィルム貼付装置、２はクエンチゾーン、３は欠陥検出装置、４は欠陥マーキング制御装置、５は欠陥マーキング装置、６はＣＣＤカメラ、７は画像判定装置、および８は鋼板をそれぞれ表す。 In the figure, 1 is a film sticking device, 2 is a quench zone, 3 is a defect detection device, 4 is a defect marking control device, 5 is a defect marking device, 6 is a CCD camera, 7 is an image determination device, and 8 is a steel plate. Represent.
鋼板８は、フィルム貼付装置１にて表裏の両面にフィルムが貼付けられ、クエンチゾーン２で冷却された後、欠陥検出装置３にて表裏の両面に存在する疵やピンホール等の欠陥部が検出される。そして、欠陥検出信号が、欠陥検出装置３から欠陥マーキング制御装置４へと送出される。 The steel sheet 8 is affixed to both front and back surfaces by the film sticking device 1 and cooled in the quench zone 2 and then the defect detection device 3 detects defects such as wrinkles and pinholes present on both front and back surfaces. Is done. Then, a defect detection signal is sent from the defect detection device 3 to the defect marking control device 4.
欠陥マーキング制御装置４では、欠陥検出信号とライン制御装置（図示せず）の速度信号に基づいて、欠陥マーキング装置５へマーキング指令を送出する。そして、マーキング指令を受けた欠陥マーキング装置５では、欠陥を検出した長手位置へ欠陥部分を表示する欠陥マークを、鋼板８の端縁部分に例えばドットパターンとしてマーキングする。 The defect marking control device 4 sends a marking command to the defect marking device 5 based on a defect detection signal and a speed signal from a line control device (not shown). Then, in the defect marking device 5 that has received the marking command, the defect mark that displays the defect portion at the longitudinal position where the defect is detected is marked on the edge portion of the steel plate 8 as a dot pattern, for example.
ラミネート鋼板製造ラインの下流に設置されたＣＣＤカメラ６では、搬送されてきたラミネート鋼板を幅方向に撮像する。撮像された画像は、画像判定装置７に送られる。 The CCD camera 6 installed downstream of the laminated steel sheet production line images the conveyed laminated steel sheet in the width direction. The captured image is sent to the image determination device 7.
画像判定装置７では、フィルム貼付位置を管理するため、送られた画像を画像処理し、ラミネート鋼板幅方向におけるフィルムが貼付されていないフィルム除け幅を検出し、ラミネート鋼板全長にわたるフィルム貼付位置の公差判定および欠陥マーク検出をラミネート鋼板全長にわたり行う。 In the image determination device 7, in order to manage the film sticking position, the sent image is image-processed, the width of the laminated steel sheet in the width direction of the laminated steel sheet is detected, and the tolerance of the film sticking position over the entire length of the laminated steel sheet is detected. Judgment and defect mark detection are performed over the entire length of the laminated steel sheet.
図２は、従来のフィルム除け幅の検出を説明する図である。また、図３は、欠陥マークがフィルムエッジ部にかかった場合のフィルム除け幅の検出を説明する図である。 FIG. 2 is a diagram for explaining detection of a conventional film removal width. FIG. 3 is a diagram for explaining detection of the film removal width when the defect mark is applied to the film edge portion.
図中、８は鋼板、９はラミネートフィルム、１０は欠陥マーク、Ｌｓは鋼板幅、およびＬｆはラミネートフィルム幅をそれぞれ表す。 In the figure, 8 is a steel plate, 9 is a laminate film, 10 is a defect mark, Ls is a steel plate width, and Lf is a laminate film width.
図２は、ラミネートフィルム９が貼付された鋼板８をＣＣＤカメラで幅方向に撮像し、撮像された画像の輝度分布を示している。鋼板８とラミネートフィルム９との輝度差からフィルムが貼られていない鋼板幅すなわちフィルム除け幅Ｌｍｏを求める。そして、求めたフィルム除け幅Ｌｍｏによって、フィルムが決められた貼付位置範囲に入っているかどうかのフィルム貼付位置の公差判定を行う。 FIG. 2 shows the luminance distribution of an image obtained by imaging the steel plate 8 with the laminate film 9 attached thereto in the width direction with a CCD camera. From the brightness difference between the steel plate 8 and the laminate film 9, the width of the steel plate on which no film is applied, that is, the film removal width Lmo is obtained. Then, based on the obtained film removal width Lmo, the tolerance of the film sticking position is determined as to whether or not the film is in the predetermined sticking position range.
鋼板８とラミネートフィルム９のそれぞれの幅中心位置が一致している条件での、鋼板幅方向の両端にフィルムが貼られていない端部幅Ｌｇは、鋼板幅Ｌｓおよびフィルム幅Ｌｆとすれば、以下に示す式のようになる。 When the width center positions of the steel plate 8 and the laminated film 9 are the same, the end width Lg where no film is applied to both ends in the steel plate width direction is the steel plate width Ls and the film width Lf. It becomes like the following formula.
Ｌｇ＝（Ｌｓ−Ｌｆ）／２
上記端部幅Ｌｇは、鋼板の中心位置に合わせてラミネートフィルムの中心が理想的に貼付された場合であって、実際は鋼板やフィルムの蛇行などによって貼付ずれが生じている。
Lg = (Ls−Lf) / 2
The end width Lg is a case where the center of the laminate film is ideally attached in accordance with the center position of the steel plate, and in reality, the attachment deviation occurs due to meandering of the steel plate or film.
そこで、フィルム貼付位置の公差判定は、計算した端部幅Ｌｇに所定の許容幅±αを設けて行う。すなわち、画像処理によって求めたフィルム除け幅Ｌｍｏが、端部幅Ｌｇ±αの範囲内にあれば、フィルム貼付位置の公差判定合格（フィルム除け幅ＯＫ）とし、これ以外ではフィルム貼付位置の公差判定不合格（フィルム除け幅ＮＧ）と判定する。 Therefore, the tolerance determination of the film application position is performed by providing a predetermined allowable width ± α to the calculated end width Lg. That is, if the film removal width Lmo obtained by the image processing is within the range of the end width Lg ± α, the film application position tolerance determination pass (film removal width OK) is obtained. Otherwise, the film application position tolerance determination is performed. It is determined as a failure (film removal width NG).
これに対して、図３のようにＣＣＤカメラの検出視野で欠陥マーク１０がフィルム９のエッジ部にかかった場合には、撮像された画像の輝度分布は欠陥マーク１０部分の輝度が高くなり、この輝度分布から求めたフィルム除け幅Ｌｍｏは図２で示したフィルム除け幅より大きくなってしまう。これにより、上述のフィルム貼付位置の公差判定で誤判定が生じてしまうため、本発明を想到するに至った。 On the other hand, when the defect mark 10 is applied to the edge portion of the film 9 in the detection field of view of the CCD camera as shown in FIG. 3, the luminance distribution of the captured image has a high luminance at the defect mark 10 portion. The film removal width Lmo obtained from this luminance distribution is larger than the film removal width shown in FIG. As a result, an erroneous determination occurs in the above-described tolerance determination of the film application position, and the present invention has been conceived.
図４は、本発明におけるフィルム貼付位置の公差判定を説明する図である。幅方向右側にフィルムが蛇行した場合の様子を示したものであり、鋼板幅方向の両端のＯＰ（オペレータ）側、およびＤＲ（駆動ドライブ）側のフィルム除け幅をそれぞれＬｍｏ、Ｌｍｄと検出している。 FIG. 4 is a diagram for explaining the tolerance determination of the film application position in the present invention. This shows the situation when the film meanders on the right side in the width direction. The film removal widths on the OP (operator) side and DR (drive drive) side at both ends in the steel sheet width direction are detected as Lmo and Lmd, respectively. Yes.
この場合、フィルム貼付位置の公差判定不合格（フィルム除け幅ＮＧ）として、「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≦Ｌｇ−α」の２つの条件を満たしている場合とする。すなわち、ＯＰ側のフィルム除け幅Ｌｍｏが端部幅Ｌｇに片側許容値αを足したＬｇ＋α以上であり、かつ、ＤＲ側のフィルム除け幅Ｌｍｄが端部幅Ｌｇから片側許容値αを引いたＬｇ−α以下である場合にフィルム貼付位置の公差判定不合格（フィルム除け幅ＮＧ）とし、これ以外の場合にはフィルム貼付位置の公差判定合格（フィルム除け幅ＯＫ）とする（フィルム貼付位置の公差判定Ａ）ものである。 In this case, it is assumed that tolerance determination failure (film removal width NG) of the film application position satisfies two conditions of “Lmo ≧ Lg + α” and “Lmd ≦ Lg−α”. That is, the OP-side film removal width Lmo is equal to or larger than Lg + α obtained by adding the one-side allowable value α to the end portion width Lg, and the DR-side film removal width Lmd is obtained by subtracting the one-side allowable value α from the end portion width Lg. If it is −α or less, the tolerance judgment of the film application position is rejected (film removal width NG), otherwise the tolerance judgment of the film application position is passed (film removal width OK) (the tolerance of the film application position) Judgment A).
また、図４と反対側に幅方向左側にフィルムが蛇行した場合のフィルム貼付位置の公差判定不合格（フィルム除け幅ＮＧ）として、「Ｌｍｏ≦Ｌｇ−α」と「Ｌｍｄ≧Ｌｇ＋α」の２つの条件を満たしている場合とする。すなわち、ＯＰ側のフィルム除け幅ＬｍｏがＬｇ−α以下であり、かつ、ＤＲ側のフィルム除け幅ＬｍｄがＬｇ＋α以上である場合にフィルム貼付位置の公差判定不合格（フィルム除け幅ＮＧ）とし、これ以外の場合にはフィルム貼付位置の公差判定合格（フィルム除け幅ＯＫ）とする（フィルム貼付位置の公差判定Ｂ）ものである。 In addition, when the film meanders on the left side in the width direction on the opposite side of FIG. 4, two tolerances of “Lmo ≦ Lg−α” and “Lmd ≧ Lg + α” are given as the film attachment position tolerance determination failure (film removal width NG). Assume that the conditions are met. That is, when the OP-side film removal width Lmo is Lg−α or less and the DR-side film removal width Lmd is Lg + α or more, the film application position tolerance determination failure (film removal width NG) In other cases, the tolerance determination pass (film removal width OK) of the film application position is set (tolerance determination B of film application position).
上記、フィルム貼付位置の公差判定ＡおよびＢにより、フィルム除け幅をラミネート鋼板全長にわたる管理を行う。これにより、フィルム貼付位置の公差判定における誤判定を１％以下に改善することができた。 Based on the above-described tolerance determinations A and B of the film application position, the film removal width is managed over the entire length of the laminated steel sheet. Thereby, the misjudgment in the tolerance judgment of a film sticking position could be improved to 1% or less.
また、本発明では、上記フィルム貼付位置の公差判定とともに、欠陥マーク検出判定も行う。図５は、本発明における欠陥マーク検出判定を説明する図である。図３に示したように、欠陥マークがＯＰ・ＤＲ側の両側にマーキングされていることにより、画像に基づくフィルム除け幅は欠陥マークが無いときと比べて大きく検出されることから、下記のロジックとする。 Moreover, in this invention, defect mark detection determination is also performed with the tolerance determination of the said film sticking position. FIG. 5 is a diagram for explaining defect mark detection determination in the present invention. As shown in FIG. 3, since the defect mark is marked on both sides of the OP / DR side, the film removal width based on the image is detected larger than when there is no defect mark. And
ＯＰ側の「Ｌｍｏ≧Ｌｇ＋α」とＤＲ側の「Ｌｍｄ≧Ｌｇ＋α」のＡＮＤ条件にて、欠陥マーク検出と判定する。この欠陥マーク検出判定により、欠陥マーク印字実績についてもラミネート鋼板全長にわたる管理を行うことができる。 It is determined that a defect mark has been detected under an AND condition of “Lmo ≧ Lg + α” on the OP side and “Lmd ≧ Lg + α” on the DR side. By this defect mark detection determination, the defect mark printing results can be managed over the entire length of the laminated steel sheet.
また、全体フローとしては、先ず、欠陥マークの検出を行い、欠陥マーク検出と判定された場合には、上記フィルム貼付位置の公差判定を行わず、欠陥マーク検出と判定されなかった場合にのみ、上記フィルム貼付位置の公差判定を行うものとする。 In addition, as an overall flow, first, the defect mark is detected, and when it is determined that the defect mark is detected, the tolerance determination of the film sticking position is not performed, and only when the defect mark is not detected, Assume that the tolerance of the film application position is determined.
なお、本発明は、ラミネート鋼板製造ラインへの適用に限られるものでなく、ラミネートフィルムを貼付する製造するラインであれば鋼板以外にも適用可能である。 In addition, this invention is not restricted to the application to a laminated steel plate manufacturing line, If it is the line which manufactures by sticking a laminate film, it can apply to other than a steel plate.
１ フィルム貼付装置
２ クエンチゾーン
３ 欠陥検出装置
４ 欠陥マーキング制御装置
５ 欠陥マーキング装置
６ ＣＣＤカメラ
７ 画像判定装置
８ 鋼板
９ ラミネートフィルム
１０ 欠陥マーク
Ｌｓ 鋼板幅
Ｌｆ ラミネートフィルム幅
DESCRIPTION OF SYMBOLS 1 Film sticking apparatus 2 Quench zone 3 Defect detection apparatus 4 Defect marking control apparatus 5 Defect marking apparatus 6 CCD camera 7 Image determination apparatus 8 Steel plate 9 Laminate film 10 Defect mark Ls Steel plate width Lf Laminate film width
Claims (2)
前記画像の輝度分布から前記ラミネート鋼板の幅方向両端の一端側および他端側のフィルム除け幅Ｌｍｏ、Ｌｍｄをそれぞれ求め、
鋼板幅Ｌｓおよびフィルム幅Ｌｆから、（Ｌｓ−Ｌｆ）／２との計算で求まる端部幅Ｌｇと、予め設定した所定の許容値αによって、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合には、欠陥マーク検出と判定し、以下のフィルム貼付位置の公差判定を行わず、
上記欠陥マーク検出と判定しなかった場合には、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≦Ｌｇ−α」の条件を共に満たしている場合に、または、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≦Ｌｇ−α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合に、フィルム貼付位置の公差判定不合格と判定し、
上記「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≦Ｌｇ−α」の条件を共に満たしている場合以外、または、上記「Ｌｍｏ≦Ｌｇ−α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合以外には、フィルム貼付位置の公差判定合格と判定することを特徴とするラミネート鋼板のフィルム除け幅管理方法。 In the laminated steel sheet production line, the film ablation width, which is the width of the part where the film is not applied, is determined based on the image obtained by imaging the laminated steel sheet with the defect mark in the width direction, and the tolerance determination of the film application position and the defect mark detection are performed. A method for managing the width of a laminated steel sheet film,
From the luminance distribution of the image, obtain the film removal widths Lmo and Lmd on one end side and the other end side of the both ends in the width direction of the laminated steel sheet,
From the steel plate width Ls and the film width Lf, the end width Lg obtained by calculation of (Ls−Lf) / 2 and a predetermined allowable value α set in advance,
The Lmo and Lmd are
When both the conditions of “Lmo ≧ Lg + α” and “Lmd ≧ Lg + α” are satisfied, it is determined that a defect mark has been detected, and the following tolerance determination of the film application position is not performed.
If it is not determined that the defect mark is detected ,
The Lmo and Lmd are
When both the conditions of “Lmo ≧ Lg + α” and “Lmd ≦ Lg−α” are satisfied, or
The Lmo and Lmd are
When both the conditions of “Lmo ≦ Lg−α” and “Lmd ≧ Lg + α” are satisfied, it is determined that the tolerance determination of the film application position is failed ,
Except when both of the above conditions of “Lmo ≧ Lg + α” and “Lmd ≦ Lg−α” are satisfied, or when both of the above conditions of “Lmo ≦ Lg−α” and “Lmd ≧ Lg + α” are satisfied Is a film removal width management method for laminated steel sheets, characterized in that it is determined that the tolerance determination of the film application position is acceptable .
鋼板の表裏の両面にフィルムを貼付するフィルム貼付装置と、
フィルム貼付したラミネート鋼板の欠陥部を検出する欠陥検出装置と、
欠陥検出信号とラミネート鋼板速度信号に基づいてマーキング指令を送出する欠陥マーキング制御装置と、
マーキング指令を受け、フィルム貼付したラミネート鋼板の欠陥を検出した長手位置へ欠陥部分を表示する欠陥マークをマーキングする欠陥マーキング装置と、
ラミネート鋼板を幅方向に撮像するＣＣＤカメラと、
撮像した画像を画像処理し、ラミネート鋼板幅方向におけるフィルム除け幅を検出し、ラミネート鋼板全長にわたるフィルム貼付位置の公差判定および欠陥マーク検出を行う画像判定装置とを具備し、
該画像判定装置では、
前記画像の輝度分布から前記ラミネート鋼板の幅方向両端の一端側および他端側のフィルム除け幅Ｌｍｏ、Ｌｍｄをそれぞれ求め、
鋼板幅Ｌｓおよびフィルム幅Ｌｆから、（Ｌｓ−Ｌｆ）／２との計算で求まる端部幅Ｌｇと、予め設定した所定の許容値αによって、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合には、欠陥マーク検出と判定し、以下のフィルム貼付位置の公差判定を行わず、
上記欠陥マーク検出と判定しなかった場合には、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≦Ｌｇ−α」の条件を共に満たしている場合に、または、
前記ＬｍｏとＬｍｄが、
「Ｌｍｏ≦Ｌｇ−α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合に、フィルム貼付位置の公差判定不合格と判定し、
上記「Ｌｍｏ≧Ｌｇ＋α」と「Ｌｍｄ≦Ｌｇ−α」の条件を共に満たしている場合以外、または、上記「Ｌｍｏ≦Ｌｇ−α」と「Ｌｍｄ≧Ｌｇ＋α」の条件を共に満たしている場合以外には、フィルム貼付位置の公差判定合格と判定するプログラムを有することを特徴とするラミネート鋼板のフィルム除け幅管理装置。 In the laminated steel sheet production line, the film ablation width, which is the width of the part where the film is not applied, is determined based on the image obtained by imaging the laminated steel sheet with the defect mark in the width direction, and the tolerance determination of the film application position and the defect mark detection are performed. It is a laminated steel strip film removal width management device,
A film sticking device for sticking films on both sides of the steel sheet;
A defect detection device for detecting a defective portion of a laminated steel sheet with a film attached thereto;
A defect marking control device for sending a marking command based on the defect detection signal and the laminated steel plate speed signal;
Receiving the marking command, a defect marking device for marking defective mark for displaying a longitudinal position defect to location of the defect has been detected in the laminated steel sheet film application,
A CCD camera for imaging a laminated steel sheet in the width direction;
Image processing is performed on the captured image, and a film removal width in the laminated steel sheet width direction is detected, and an image determination apparatus that performs tolerance determination and defect mark detection of a film sticking position over the entire length of the laminated steel sheet,
In the image determination apparatus,
From the luminance distribution of the image, obtain the film removal widths Lmo and Lmd on one end side and the other end side of the both ends in the width direction of the laminated steel sheet,
From the steel plate width Ls and the film width Lf, the end width Lg obtained by calculation of (Ls−Lf) / 2 and a predetermined allowable value α set in advance,
The Lmo and Lmd are
When both the conditions of “Lmo ≧ Lg + α” and “Lmd ≧ Lg + α” are satisfied, it is determined that a defect mark has been detected, and the following tolerance determination of the film application position is not performed.
If it is not determined that the defect mark is detected ,
The Lmo and Lmd are
When both the conditions of “Lmo ≧ Lg + α” and “Lmd ≦ Lg−α” are satisfied, or
The Lmo and Lmd are
When both the conditions of “Lmo ≦ Lg−α” and “Lmd ≧ Lg + α” are satisfied, it is determined that the tolerance determination of the film application position is failed ,
Except when both of the above conditions of “Lmo ≧ Lg + α” and “Lmd ≦ Lg−α” are satisfied, or when both of the above conditions of “Lmo ≦ Lg−α” and “Lmd ≧ Lg + α” are satisfied the width management device except film laminated steel sheet characterized by having a program to determine the tolerance judgment passing the film sticking position.
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