JP3375839B2 - Detector for convexity defects on the surface of electroplated steel strip - Google Patents
Detector for convexity defects on the surface of electroplated steel stripInfo
- Publication number
- JP3375839B2 JP3375839B2 JP30632796A JP30632796A JP3375839B2 JP 3375839 B2 JP3375839 B2 JP 3375839B2 JP 30632796 A JP30632796 A JP 30632796A JP 30632796 A JP30632796 A JP 30632796A JP 3375839 B2 JP3375839 B2 JP 3375839B2
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- plated steel
- convex defect
- convex
- defect
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明装置は、電気めっき鋼
帯表面の凸部欠陥検出装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting a convex defect on the surface of an electroplated steel strip.
【０００２】[0002]
【従来の技術】電気めっき鋼帯表面の凸部欠陥検出とし
ては、被検査材の全幅に亘って光学的に走査した走査信
号を分析して得た欠陥信号を記憶し、これを静止画像と
して表示するとともに、欠陥部を判定することが特公昭
６３−４３６８５号公報に開示されている。また、光学
的に走査する手段としてレーザー光を用いることが知ら
れている。2. Description of the Related Art To detect a convex defect on an electroplated steel strip surface, a defect signal obtained by analyzing a scanning signal optically scanned over the entire width of a material to be inspected is stored and used as a still image. Japanese Patent Publication No. 63-43685 discloses displaying and determining the defective portion. It is also known to use laser light as a means for optically scanning.
【０００３】[0003]
【発明が解決しようとする課題】上記のごとく、光学的
に走査して電気めっき鋼帯表面の凸部欠陥を検出する
と、例えば電気めっきとして錫、クロム等のめっき金属
を鋼帯に連続めっきに際しては、電極の一部にめっき金
属がめっきされて堆積し、これが剥離してめっきライン
を通板中のめっき鋼帯表面に搬送ロール（シンクロール
等）によって押し付けられて付着する凸部欠陥が発生す
ることがある。このようにめっき鋼帯表面に付着しため
っき金属は、めっき鋼帯にめっきと同一のものであり、
光沢差がほとんどないことから、誤検出、未査検出ある
いは過検出によって正確な検出が困難である。従って、
めっき鋼帯（板）の加工製品の品質を劣化させることに
なる等の課題がある。本発明装置は、このような課題を
有利に解決するためなされたものであり、上記のごと
き、めっき金属の付着等のめっき鋼帯表面の凸部欠陥を
正確に検出する装置を提供することを目的とするもので
ある。As described above, when a convex defect on the surface of the electroplated steel strip is detected optically by scanning, for example, electroplating is performed when continuously plating a steel strip with a plating metal such as tin or chromium. Is a deposit of plating metal that is deposited on a part of the electrode, peels off, and is pressed by the transport roll (sink roll, etc.) onto the surface of the plated steel strip in the plating line to cause a convex defect. I have something to do. The plating metal adhered to the surface of the plated steel strip in this way is the same as the plating on the plated steel strip.
Since there is almost no difference in gloss, accurate detection is difficult due to erroneous detection, unchecked detection or over detection. Therefore,
There are problems such as deterioration of the quality of processed products of plated steel strips (plates). The device of the present invention has been made in order to advantageously solve such a problem, and as described above, to provide a device for accurately detecting the convex defects of the plated steel strip surface such as the adhesion of the plating metal. It is intended.
【０００４】[0004]
【課題を解決するための手段】本発明装置の特徴とする
ところは、通板めっき鋼帯全幅に亘って凸部欠陥検出端
をめっき鋼帯に間隙部を保持するとともに、めっき鋼帯
通板方向へ回動自在に懸吊り配置し、該凸部欠陥検出端
とめっき鋼帯搬送ロール間に通電回路を構成し、該通電
回路に凸部欠陥表示器を接続したことを特徴とする電気
めっき鋼帯表面の凸部欠陥検出装置である。A feature of the present invention is that a convex defect detection end is held in a plated steel strip over the entire width of the plated steel strip and a gap is held in the plated steel strip. The electroplating is characterized by arranging so as to be rotatable in the direction of rotation, forming an energizing circuit between the convex defect detecting end and the plated steel strip transport roll, and connecting a convex defect indicator to the energizing circuit. It is a convex defect detection device on the surface of a steel strip.
【０００５】[0005]
【発明の実施の形態】上記のごとく、凸部欠陥検出端を
めっき鋼帯に間隙部を保持し、かつめっき鋼帯通板方向
へ回動自在に配置することによって、めっき鋼帯表面に
めっき金属する等の凸部欠陥が発生すると、この凸部欠
陥がめっき鋼帯の通板により、間隙部で凸部欠陥検出端
に接触すると、この凸部欠陥検出端とめっき鋼帯搬送ロ
ール間に構成した通電回路が結線して通電され、この通
電回路に接続した凸部欠陥表示器へ凸部欠陥信号として
入力し表示し、めっき鋼帯表面の凸部欠陥を検出するも
のである。また、凸部欠陥検出端をめっき鋼帯通板方向
へ回動自在懸吊りする保持棒と凸部欠陥表示器間に通電
回路を構成し、上記のごとくめっき鋼帯凸部欠陥が凸部
欠陥検出端に接触して、凸部欠陥検出端がめっき鋼帯通
板方向へ振れることによって、回動する保持棒に付設し
たレバー（接触型スイッチ）が作動し、電気回路を結線
して凸部欠陥表示器へ検出凸部欠陥として表示する。BEST MODE FOR CARRYING OUT THE INVENTION As described above, the convex defect detection end is plated on the surface of the plated steel strip by holding the gap in the plated steel strip and rotatably arranging in the direction of passage of the plated steel strip. When a convex defect such as metal occurs, this convex defect contacts the convex defect detection end in the gap due to the passage of the plated steel strip, and between this convex defect detection end and the plated steel strip transport roll. The configured energizing circuit is connected and energized, and a convex defect signal connected to this energizing circuit is input and displayed as a convex defect signal to detect a convex defect on the surface of the plated steel strip. In addition, an energization circuit is configured between the holding rod that hangs the convex defect detection end rotatably in the plated steel strip threading direction and the convex defect indicator. By contacting the detection end, and the convex defect detection end swinging in the direction of the plated steel strip passing plate, the lever (contact type switch) attached to the rotating holding rod operates, connecting the electric circuit and connecting the convex part. It is displayed on the defect display as a detected convex defect.
【０００６】しかして上記のごとき、凸部欠陥検出端と
めっき鋼帯との間隙部は、検出すべきめっき鋼帯表面凸
部欠陥の凸部高さより、低い間隙部に保持するごとく、
凸部欠陥検出端の上部を回動自在な保持棒に装着して、
凸部欠陥検出端を回動自在に配置することによって、め
っき鋼帯表面凸部欠陥を確実に検出するとともに、この
ように 凸部欠陥検出端を回動自在に配置することによ
り、めっき鋼帯表面凸部と接触したときに回動して、凸
部欠陥検出端の摩耗、破損等を防止することができる。However, as described above, the gap between the convex defect detection end and the plated steel strip is maintained at a lower gap than the convex height of the convex defect on the surface of the plated steel strip to be detected.
Attach the upper part of the convex defect detection end to the rotatable holding rod,
By arranging the convex defect detection end rotatably, the convex defect on the surface of the plated steel strip can be reliably detected, and by arranging the convex defect detection end rotatably in this way, the plated steel strip It is possible to prevent the abrasion and breakage of the convex defect detection end by rotating when it comes into contact with the surface convex portion.
【０００７】前記のごとく、めっき鋼帯表面凸部欠陥と
凸部欠陥検出端が接触することによって、通電回路へ通
電され、この通電回路に接続した凸部欠陥表示器へ凸部
欠陥信号として入力して表示するとともにプリントアウ
トして、めっき後のめっき鋼帯をコイル状に巻き取っ
た、めっき鋼帯コイルに凸部欠陥有りをプリントアウト
表示する。かくして後工程での定尺に剪断するとき、凸
部欠陥を除去する。また、コイル出荷する場合は、需要
家で加工するとき除去する等によって、めっき鋼帯加工
製品の品質劣化を防止するとともに、製品歩留りの低下
を防止する。更に、上記のごとき凸部欠陥表示器ととも
に、凸部欠陥位置検出器を通電回路に接続して、凸部欠
陥がめっき鋼帯のどの位置に発生しているかを凸部欠陥
表示器へ表示するとともに、プリントアウトしてめっき
鋼帯コイルに表示することによって、より正確にめっき
鋼帯加工時に凸部欠陥を除去することができ、必要に応
じて凸部欠陥位置検出器を通電回路に接続するものであ
る。As described above, when the convex defect on the surface of the plated steel strip and the convex defect detecting end are brought into contact with each other, electricity is supplied to the energizing circuit and is inputted as a convex defect signal to the convex defect indicator connected to this energizing circuit. Is displayed and printed out, and the plated steel strip after plating is wound up in a coil shape, and the presence of a convex defect on the plated steel strip coil is printed out and displayed. Thus, when the post-process is sheared to a fixed length, the convex defects are removed. Further, when the coil is shipped, the quality of the plated steel strip processed product is prevented from being deteriorated by removing the coil when it is processed by a customer, and the product yield is prevented from being lowered. Further, together with the convex defect indicator as described above, a convex defect position detector is connected to the energizing circuit to display on the convex defect indicator where the convex defect occurs in the plated steel strip. At the same time, by printing out and displaying it on the plated steel strip coil, it is possible to more accurately remove the convex defect during processing of the plated steel strip, and connect the convex defect position detector to the energizing circuit as necessary. It is a thing.
【０００８】このような凸部欠陥位置検出器としては、
例えば連続電気めっきラインおいては、鋼帯コイルを巻
き戻してめっきラインへ通板し、先行鋼帯コイルが巻き
戻されると、新たな鋼帯コイル先端と先行鋼帯コイル後
端を重ね合わせ電気抵抗溶接により溶接接続して連続的
にめっきを施すものであり、このように溶接接続する溶
接器と上記凸部欠陥位置検出器を連係せしめて、溶接接
続部のめっきライン入側通過後の通板速度からめっき鋼
帯表面の凸部欠陥検出時点の溶接部からの位置を算出
し、上記凸部欠陥表示器へ導入して表示するとともに、
プリントアウトする。また、上記のごとき凸部欠陥検出
端をめっき鋼帯巾方向に区分し、めっき鋼帯巾方向の凸
部欠陥位置を正確に検出することができる。As such a convex defect position detector,
For example, in a continuous electroplating line, the steel strip coil is unwound and passed through the plating line, and when the preceding steel strip coil is unwound, a new steel strip coil front end and a preceding steel strip coil rear end are superposed. Resistance welding is used to perform continuous welding and plating is performed.The welder that is connected by welding in this way and the above-mentioned convex defect position detector are linked so that the welding connection can be performed after passing through the plating line entry side. Calculating the position from the weld at the time of detecting a convex defect on the plated steel strip surface from the plate speed, and introducing and displaying it on the convex defect indicator,
Print out. Further, the convex defect detection end as described above is divided in the plated steel strip width direction, and the position of the convex defect in the plated steel strip width direction can be accurately detected.
【０００９】このように検出するめっき鋼帯表面の凸部
欠陥としては、前記のごときめっき金属の付着、搬送ロ
ール等に付着した異物により、めっき鋼帯に形成される
凸部疵、上記のごときめっき鋼帯溶接接続部の重ね合わ
せ部等の凸部欠陥を正確に検出することができる。The convex defects on the surface of the plated steel strip thus detected include the convex defects formed on the plated steel strip due to the adhesion of the plating metal as described above and the foreign substances adhering to the transport rolls and the like. It is possible to accurately detect a convex defect such as a superposed portion of the welded joint of the plated steel strip.
【００１０】[0010]
【実施例】次に、本発明装置の実施例を挙げる。
実施例１
図１、図２及び図３において、保持枠１、１ａに保持棒
２を搬送ロール３巾方向ほぼ全幅に固設し、不導体板４
（ベークライト板等）の下端部に導体板５（ステンレス
板等）からなる凸部欠陥検出端６をベアリング７を介し
て、保持棒２にめっき鋼帯８の通板方向へ回動自在に懸
吊りする。このような凸部欠陥検出端６は、めっき鋼帯
８の巾方向全幅に亘って、めっき鋼帯８表面と間隙部９
を保持する。かくして、めっき後の通板めっき鋼帯８表
面の凸部欠陥１０が凸部欠陥検出端６の下端部５に接触
すると、凸部欠陥検出端６と搬送ロール３間に構成した
通電回路１１が結線され、この通電回路１１に接続した
凸部欠陥表示器１２へ凸部欠陥信号として入力し、凸部
欠陥１０有りを表示するとともにプリントアウトする。
このように、めっき鋼帯８の通板移動により、めっき鋼
帯８凸部欠陥１０が凸部欠陥検出端６に接触すると、凸
部欠陥検出端６は、めっき鋼帯８通板方向に保持棒２を
中心に回動して、めっき鋼帯８凸部欠陥１０の通過後ス
トッパー１３によって振れ止めして速やかに垂直位置に
復帰させ、直ちに検出体制をとるものである。EXAMPLES Next, examples of the apparatus of the present invention will be described. Embodiment 1 In FIG. 1, FIG. 2 and FIG. 3, a holding bar 2 is fixed to a holding frame 1 or 1 a in the widthwise direction of a conveying roll 3 and a non-conductive plate 4 is provided.
A convex defect detection end 6 made of a conductor plate 5 (stainless steel plate or the like) is attached to a lower end portion of a (bakelite plate or the like) via a bearing 7 so as to be rotatably attached to the holding rod 2 in the plate passing direction of the plated steel strip 8. Hang. The protrusion defect detection end 6 as described above extends over the entire width of the plated steel strip 8 in the width direction and the gap 9 and the surface of the plated steel strip 8.
Hold. Thus, when the convex defect 10 on the surface of the plated steel strip 8 after plating comes into contact with the lower end 5 of the convex defect detecting end 6, the energizing circuit 11 configured between the convex defect detecting end 6 and the transport roll 3 is formed. It is connected and is input as a convex defect signal to the convex defect indicator 12 connected to this energizing circuit 11, and the presence of the convex defect 10 is displayed and printed out.
As described above, when the plated steel strip 8 convex portion defect 10 comes into contact with the convex portion defect detection end 6 due to the movement of the plated steel strip 8 through the strip, the convex portion defect detection end 6 is held in the plated steel strip 8 strip passing direction. The rod 2 is rotated around the center, and after passing through the defects 10 of the plated steel strip 8 protrusions, the stopper 13 prevents the rods from swaying to quickly return to the vertical position, and the detection system is immediately taken.
【００１１】実施例２
図４に示すごとく、通板めっき鋼帯８の凸部欠陥１０が
凸部欠陥検出端６に接触して、保持棒２を中心にめっき
鋼帯８通板方向へ回動して振れ、保持棒２に付設したレ
バー１４が凸部欠陥検出端６の保持棒２と凸部欠陥表示
器１２間に構成した通電回路１１のスイッチ１５に接触
し、通電回路１１が結線されて凸部欠陥表示器１２へ凸
部欠陥信号として入力し、凸部欠陥１０有りを表示する
とともにプリントアウトする。Example 2 As shown in FIG. 4, the convex defect 10 of the strip-plated steel strip 8 contacts the convex defect detection end 6, and the holding rod 2 is rotated in the direction of stripping the plated steel strip 8. The lever 14 attached to the holding rod 2 comes into contact with the switch 15 of the energizing circuit 11 formed between the holding rod 2 of the convex defect detecting end 6 and the convex defect indicator 12, and the energizing circuit 11 is connected. Then, the convex defect signal is input to the convex defect indicator 12 to display the presence of the convex defect 10 and print it out.
【００１２】図５に示すごとく、通電回路１１に凸部欠
陥位置検出器１６を介して、凸部欠陥表示器１２を接続
し、この凸部欠陥位置検出器１６へ電気めっきライン入
側の鋼帯接続溶接器１７から溶接信号を入力して、通板
速度からめっき鋼帯８の凸部欠陥１０を検出したとき、
めっき鋼帯８長手方向溶接部からどの位置に凸部欠陥１
０が発生したかを凸部欠陥表示器１２へ表示するととも
にプリントアウトする。As shown in FIG. 5, the convex defect display 12 is connected to the energizing circuit 11 via the convex defect position detector 16, and the steel on the entry side of the electroplating line is connected to the convex defect position detector 16. When a welding signal is input from the strip connection welder 17 and a convex portion defect 10 of the plated steel strip 8 is detected from the strip running speed,
Defects of convex portion 1 at which position from the welded portion in the longitudinal direction of the plated steel strip 8
Whether or not 0 has occurred is displayed on the convex defect display 12 and printed out.
【００１３】[0013]
【発明の効果】本発明装置によれば、電気めっき鋼帯の
凸部欠陥を正確に検出することができ、電気めっき鋼帯
（板）加工製品の品質を向上するとともに、歩留りを高
めることができる等の優れた効果が得られるAccording to the apparatus of the present invention, it is possible to accurately detect the convex defects of the electroplated steel strip, improve the quality of the electroplated steel strip (plate) processed product, and increase the yield. Excellent effects such as being able to be obtained
【図１】本発明装置の実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the device of the present invention.
【図２】本発明装置の実施例を示す要部正面図である。FIG. 2 is a front view of an essential part showing an embodiment of the device of the present invention.
【図３】本発明装置の実施例を示す要部側面図である。FIG. 3 is a side view of essential parts showing an embodiment of the device of the present invention.
【図４】本発明装置の実施例を示す要部側面図である。FIG. 4 is a side view of essential parts showing an embodiment of the device of the present invention.
【図５】本発明装置の実施例を示す要部側面図である。FIG. 5 is a side view of essential parts showing an embodiment of the device of the present invention.
２ 保持棒 ３ 搬送ロール ６ 凸部欠陥検出端 ８ めっき鋼帯 ９ 間隙部 １１ 通電回路 １２ 凸部欠陥表示器 １６ 凸部欠陥位置検出器 2 holding rod 3 transport rolls 6 Convex defect detection end 8 plated steel strip 9 Gap 11 energizing circuit 12 Projection defect indicator 16 Convex defect position detector
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 27/00 - 27/24 G01N 19/08 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) G01N 27/00-27/24 G01N 19/08
Claims (2)
出端をめっき鋼帯に間隙部を保持するとともに、めっき
鋼帯通板方向へ回動自在に懸吊り配置し、該凸部欠陥検
出端とめっき鋼帯搬送ロール間に通電回路を構成し、該
通電回路に凸部欠陥表示器を接続したことを特徴とする
電気めっき鋼帯表面の凸部欠陥検出装置。1. A plate defect-detecting end over the entire width of the strip-plated steel strip is held in the strip-plated steel strip so as to hold a gap, and is rotatably suspended in the strip-plated steel strip direction. A convex defect detecting device on the surface of an electroplated steel strip, wherein an energizing circuit is formed between the defect detecting end and the plated steel strip transport roll, and a convex defect indicator is connected to the energizing circuit.
し、該凸部欠陥位置検出器には電気めっきライン入側の
鋼帯接続溶接機から溶接信号を入力したことを特徴とす
る請求項１に記載の電気めっき鋼帯表面の凸部欠陥検出
装置。 2. A convex defect position detector is provided in the energizing circuit.
However, the convex defect position detector is
The welding signal is input from the steel strip connection welding machine.
Detection of convex defects on the surface of the electroplated steel strip according to claim 1.
apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30632796A JP3375839B2 (en) | 1996-11-18 | 1996-11-18 | Detector for convexity defects on the surface of electroplated steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30632796A JP3375839B2 (en) | 1996-11-18 | 1996-11-18 | Detector for convexity defects on the surface of electroplated steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10148625A JPH10148625A (en) | 1998-06-02 |
| JP3375839B2 true JP3375839B2 (en) | 2003-02-10 |
Family
ID=17955781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30632796A Expired - Fee Related JP3375839B2 (en) | 1996-11-18 | 1996-11-18 | Detector for convexity defects on the surface of electroplated steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3375839B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850551A (en) * | 2016-07-06 | 2018-03-27 | 金烈 | Defect detection device |
-
1996
- 1996-11-18 JP JP30632796A patent/JP3375839B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10148625A (en) | 1998-06-02 |
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