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JP3978620B2 - Steel strip direction change device - Google Patents
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JP3978620B2 - Steel strip direction change device - Google Patents

Steel strip direction change device Download PDF

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Publication number
JP3978620B2
JP3978620B2 JP10982896A JP10982896A JP3978620B2 JP 3978620 B2 JP3978620 B2 JP 3978620B2 JP 10982896 A JP10982896 A JP 10982896A JP 10982896 A JP10982896 A JP 10982896A JP 3978620 B2 JP3978620 B2 JP 3978620B2
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Japan
Prior art keywords
steel strip
cover
guide surface
strip
fluid
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JP10982896A
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Japanese (ja)
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JPH09295026A (en
Inventor
陽俊 山下
忠明 八角
健爾 飯住
一光 三本竹
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JFE Steel Corp
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JFE Steel Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/30Orientation, displacement, position of the handled material
    • B65H2301/34Modifying, selecting, changing direction of displacement
    • B65H2301/342Modifying, selecting, changing direction of displacement with change of plane of displacement
    • B65H2301/3423Modifying, selecting, changing direction of displacement with change of plane of displacement by travelling an angled curved path section for overturning and changing feeding direction

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  • Advancing Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、鋼帯等の帯状材に複数の処理を連続して行う場合等に使用される帯状材進行方向変更装置に関し、特に、帯状材を筒体内からの噴出流体によって浮上させながら非接触で案内するものに関する。
【0002】
【従来の技術】
鋼帯に複数の処理を連続して行う際等には、設備全体のレイアウト上の問題等から処理装置間で鋼帯の進行方向を変更する場合があり、その際に使用される帯状材進行方向変更装置としては、例えば、特開平4−55254号公報に記載されているものがある。
【0003】
この装置は、図5および6に示すように、筒状フロータ1aの半円状の周面に鋼帯面を対向させる螺旋帯状部2aを設けて、この螺旋帯状部2aに多数の流体噴出口22,22aを貫通させたものであり、筒状フロータ1a内に導入した流体をこの流体噴出口22から鋼帯面に向けて噴出させて、螺旋帯状部2aを進行通路として鋼帯Sを浮上状態で案内する。
【0004】
また、筒状フロータ1aには、進行通路の幅WK を鋼帯Sの板幅に応じた幅にするために、螺旋帯状部2aの幅方向外形線に沿った形状の一対のサイドプレート5が立設されている。このサイドプレート5は、筒状フロータ1aに外嵌可能な内径の筒体31の一端に形成され、この筒体31が、非進行通路となる螺旋帯状部の流体噴出口22aを塞ぐカバーとなっている。
【0005】
このサイドプレートは、鋼帯端部とサイドプレートとの間から流出する流体の圧損を大きくすることにより鋼帯の浮上量を増加させ、また、鋼帯の端部がサイドプレートに近づくと、圧損がより大きくなって、逆に鋼帯を押し戻す力が働く、すなわちセンタリングフォースが発生し、鋼帯の蛇行や斜行を防止するなどの作用を有している。また、前記カバーは、螺旋帯状部の非進行通路となる部分から流体を無駄に噴出させないことを目的にして設置されている。
【0006】
【発明が解決しようとする課題】
しかしながら、このようなサイドプレートを有する帯状材進行方向変更装置では、板厚の厚い鋼帯(剛性の高い帯状材)を螺旋状に曲げながら通板すると、図7に示すように、鋼帯Sが円筒体1の周面に沿わずに蛇行するようになるため、鋼帯Sの幅方向端部がサイドプレートに接触して、鋼帯Sに疵が発生する恐れがある。
【0007】
これを防止するため本発明者等は、カバーを筒体内に設け、このカバーで内側から案内面両端の流体噴出口を塞ぐとともに、進行通路の幅を鋼帯の板幅に応じた幅にすることを提案した(特願平8−40088号明細書参照)。しかしながら、この装置は、サイドプレートを有するものと比較して前述のセンタリングフォースが働かないため鋼帯の蛇行量が大きく、鋼帯の幅方向端部が、カバーにより流体噴出口が塞がれた位置にまで達して、振動したり折れたりする恐れがある。
【0008】
本発明は、このような点に着目してなされたものであり、流体の噴出によって帯状材を浮上状態で案内しながらその進行方向を変更する帯状材進行方向変更装置において、板厚の厚い鋼帯のように蛇行しやすい帯状材であっても、幅方向端部に疵や振動や折れを発生させないようにすることを課題とする。
【0009】
【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、鋼帯の面を対向させる案内面を筒体の周面に軸方向に所定幅で設け、この案内面は螺旋帯状に形成され、前記案内面に、筒体内から鋼帯の面に向けて流体を噴出させる多数の流体噴出口を設け、この流体噴出口から噴出する流体によって、鋼帯を案内面から浮上状態で筒体の軸方向と交差する方向に案内することで、その進行方向を変更する鋼帯進行方向変更装置において、前記案内面の幅方向両端側の流体噴出口を覆うカバーを筒体内に設けるとともに、前記カバーを筒体の軸方向に移動可能とする移動手段と、前記カバーの前記軸方向の位置を検出するカバー位置検出手段と、前記鋼帯の幅方向端部を検出する鋼帯端部位置検出手段と、前記カバー位置検出手段によるカバー位置検出値および前記鋼帯端部位置検出手段による鋼帯端部位置検出値に基づいて、前記鋼帯の幅方向各端部とカバーの案内面側端部との間に所定の間隔が開くように前記移動手段の移動量を制御する移動量制御手段と、を備え、前記鋼帯端部位置検出手段は、鋼帯の案内面への入側および出側に設けた鋼帯端部位置検出装置と、当該各検出装置による検出値に基づいて鋼帯端部位置を算出する鋼帯端部位置算出手段とを備えたことを特徴とする鋼帯進行方向変更装置を提供する。
【0011】
【発明の実施の形態】
以下、本発明の実施形態について図面に基づいて説明する。
図1は、本発明の一実施形態に相当する帯状材進行方向変更装置を示す概略斜視図であり、図2はこの装置と帯状材との配置を示す概略側面図であり、図3はこの装置の部分断面図である。
【0012】
これらの図に示すように、鋼帯Sの面を対向させる案内面2は、円筒体1の一方の半円周面11の軸方向中心部分に、この軸を中心とする同じ二本の螺旋を幅方向の外形線21として、軸方向に所定幅WA (案内される鋼帯Sの幅WS より十分に大きな寸法)で設けられている。この案内面2の全面には、等間隔で貫通穴(流体噴出口)22が設けられている。このような案内面2は、例えば、円筒体1の二本の外形線21の間に相当する部分をパンチングメタルで形成すること等によって形成される。
【0013】
この円筒体1内の案内面2の幅方向両端側には、半円周面11に内嵌される曲面を外周面とし、幅方向両端の外形線が案内面2の螺旋状の外形線21と同じに形成された板状のカバー3が設けてある。このカバー3は、図3に示すように、案内面2の幅方向両端側の貫通穴22を塞いで、流体噴出幅(進行通路幅)WK を、鋼帯Sの幅WS に応じた(案内面2の幅WA より小さい)幅とするためのものであり、例えば、薄板を、外周面が半円周面11に内嵌される曲面となるように曲げ加工した後、螺旋状の外形線21で所定幅の帯状に切断することによって形成される。
【0014】
このカバー3は、また、円筒体1内の所定位置にシリンダ部41が固定された油圧シリンダ4によって円筒体1の軸方向に移動可能となっている。油圧シリンダ4のシリンダ部41は、例えば、円筒体1の内面から突設させたブラケットに固定され、ロッド部42の先端はカバー3の幅方向端面(案内面とは反対側の端面)に固定されて、油圧シリンダ4の進退によって当該端面が押し引きされることにより、カバー3により案内面2を塞ぐ幅が変化するようになっている。また、油圧シリンダ4の進退範囲の設定により、カバー3の案内面2側の端面は、円筒体1の軸方向で案内面2より外側には位置しないようになっている。
【0015】
また、円筒体1内には、図示されない流体導入装置によって所定の圧力で流体が導入され、導入された流体が、円筒体1内から貫通穴22を通して鋼帯Sの面に向けて噴出されるようになっている。この噴出流体により、鋼帯Sは案内面2に沿って円筒体1から浮上状態で案内されて進むため、その進行方向が変更される。
【0016】
一方、鋼帯Sの案内面2への入側および出側には、鋼帯Sの幅方向各端部の位置を検出する帯状材端部位置検出装置5(5L,5R)が設置されている。この帯状材端部位置検出装置5としては、例えば、鋼帯Sを挟んで対向配置される投光器5aと受光器5bとで構成されるもの(図2参照)を使用することができる。この帯状材端部位置検出装置5L,5Rによって、案内面2に入る直前の鋼帯Sの幅方向端面位置LI と案内面2から出た直後の鋼帯Sの幅方向端面位置LO が、左右各端部について検出される。これらの位置LI ,LO (L)は図3に示すように、例えば、円筒体1の軸方向で案内面2より外側となる所定点BR を基準点として、この点BR からの距離として検出される。
【0017】
また、円筒体1内には、カバー3の案内面2側の幅方向端面位置Kを、案内面2の鋼帯進行方向の中心部において検出するカバー位置検出器6が、左右それぞれのカバー3について設置されている。このカバー位置検出器6としては、例えば、カバー3の移動に伴ってゼンマイ状に巻かれたワイヤーの巻き戻し長さが変化する構造のアナログ位置検出器を使用することができ、また、油圧シリンダ4に位置センサーが付いている場合には、これを利用することもできる。なお、ここでは、この位置Kも、前記位置LI ,LO と同じ基準点BR からの距離として検出されるようになっている。
【0018】
これらの位置検出値LI ,LO ,Kは、左端右端についてそれぞれ、図4にブロック図で示すように、例えばマイクロコンピュータからなる制御装置7に入力され、この制御装置7内で所定の演算処理がなされて、圧力指令値に相当する電流値IP が油圧シリンダ4に出力されるようになっている。
【0019】
入側に設置された帯状材端部位置検出装置5R(5L)からの位置検出値LI および入側に設置された帯状材端部位置検出装置5R(5L)からの位置検出値LO は、制御装置7の帯状材端部位置演算器71に入力され、この帯状材端部位置演算器71は、両検出値LI ,LO の平均値を帯状材端部位置L(=(LI +LO )/2)として算出する。算出された帯状材端部位置Lは加減算器72に入力される。
【0020】
加減算器72には、この帯状材端部位置算出値Lとともに、帯状材−カバー間隔設定器8から設定値Aが入力されるようになっており、この加減算器72で、帯状材端部位置算出値Lから設定値Aを減じることによって、鋼帯Sの端面位置とカバー3の端面位置との間隔が設定値Aとなるためのカバー3の端面位置(目標値)K0 を算出する。算出された端面位置K0 は加減算器73に入力される。なお、帯状材−カバー間隔設定器8は、鋼帯Sの板幅や板厚、材質などに応じて、鋼帯Sの幅方向端面位置とカバー3の案内面2側の端面位置との間隔として適切な値Aを例えば人間が選択して、制御装置7の加減算器72に入力するものである。
【0021】
加減算器73には、この端面位置K0 とともに、カバー位置検出器6からの位置検出値K(現時点でのカバー3の端面位置)が入力されるようになっており、この加減算器73で、端面位置K0 から位置検出値Kを減じることによって、鋼帯Sの端面位置とカバー3の端面位置との間隔が設定値Aとなるために必要なカバー3の移動量ΔKを算出する。
【0022】
算出されたカバー移動量ΔKはPI制御演算器74に入力されて、所定の比例積分動作信号f(ΔK)に変換され、この値が圧力制御装置75に入力される。この圧力制御装置75は、油圧シリンダ4の移動量を前記信号f(ΔK)に相当する量とするための電流指令値IP を算出して、この電流指令値IP を油圧シリンダ4に出力する。これにより、油圧シリンダ4の進退量はそのままカバー3の移動量となってカバー3が移動する。
【0023】
なお、この制御装置7では、カバー端面位置の検出値Kが加減算器73にフィードバックされて、この値Kが目標値K0 になるまで訂正動作を繰り返すフィードバック制御がなされるようになっている。また、前述のように、カバー3の案内面2側の端面は、円筒体1の軸方向で案内面2より外側には位置しないようになっているため、前記目標値K0 が当該位置に設定された場合には、例えばエラー信号が出力されるようになっている。
【0024】
この制御装置7のうち、加減算器72,73、PI制御演算器74、および圧力制御器75が、本発明の移動量制御手段に相当する。
これにより、鋼帯Sの幅方向端面位置とカバー3の案内面2側の端面位置との間隔は設定値Aに保持されるようになる。
【0025】
したがって、左右のカバー3間隔に相当する進行通路幅WK からの噴出流体(例えば空気等の気体や液体)により、鋼帯Sは案内面2に沿って円筒体1から浮上状態で案内されて進み、その進行方向が変更されるが、この時、鋼帯Sの幅方向端面位置とカバー3の案内面2側の端面位置との間隔が設定値Aに保持されるため、鋼帯Sの幅方向端部が、カバー3により流体噴出口22が塞がれた位置にまで達することがない。これにより、鋼帯Sが蛇行した場合でも、その幅方向端部が振動したり折れたりすることが防止され、疵の発生も防止される。また、板幅方向の浮上量も均一になって蛇行量自体も減少する。
【0026】
なお、前記実施形態では、帯状材端部位置検出装置5L,5Rを鋼帯Sの案内面2への入側と出側の両方に設置して、各検出装置による検出値LI ,LO の平均値(案内面2の鋼帯進行方向の中心部での値)を帯状材端部位置Lとしているため、図7に示すように、鋼帯Sがねじれて案内面2に沿わないような場合でも、帯状材端部位置Lが正確に検出される。また、帯状材端部位置検出装置5L,5Rを、案内面2の鋼帯進行方向の中心部ではなく入側と出側に設置することによって、検出装置と鋼帯Sとの接触を避けることができる。
【0027】
また、前記実施形態では、前記目標値K0 が円筒体1の軸方向で案内面2より外側となる位置に設定された場合には、例えばエラー信号が出力されるようになっているため、油圧シリンダ4に無理な負荷がかからない。
【0028】
また、前記実施形態では、カバー位置検出器6として、カバー3の案内面2側の幅方向端面位置Kを検出するものを使用しているが、これに限定されず、カバー3の幅方向(円筒体1の軸方向)での位置が特定され、結果として案内面2側の幅方向端面位置が得られるものであればよい。
【0029】
【発明の効果】
以上説明したように、本発明の帯状材進行方向変更装置によれば、通板される帯状材の幅方向各端部と筒体内部に配置されたカバーの案内面側端部との間に所定の間隔が開くように制御されるため、帯状材の幅方向端部が、カバーにより流体噴出口が塞がれた位置にまで達することがなくなり、帯状材が蛇行した場合でも、その幅方向端部が振動したり折れたりすることが防止され、疵の発生も防止される。
【図面の簡単な説明】
【図1】本発明の帯状材進行方向変更装置の一実施形態を示す概略斜視図である。
【図2】図1の帯状材進行方向変更装置と帯状材との配置を示す概略側面図である。
【図3】図1の帯状材進行方向変更装置の部分断面図である。
【図4】図1の帯状材進行方向変更装置で行われる制御方法を示すブロック図である。
【図5】帯状材進行方向変更装置の従来例を示す正面図である。
【図6】図5の帯状材進行方向変更装置の部分断面図である。
【図7】帯状材進行方向変更装置で、鋼帯が円筒面に沿わずに蛇行し、ねじれている状態を示す斜視図である。
【符号の説明】
1 円筒体
2 案内面
3 カバー
4 油圧シリンダ(移動手段)
5(5R,5L)
帯状材端部位置検出装置(帯状材端部位置検出手段)
6 カバー位置検出器(カバー位置検出手段)
7 制御装置(移動量制御手段)
11 半円周面
22 貫通穴(流体噴出口)
71 帯状材端部位置演算器
(帯状材端部位置検出手段、帯状材端部位置算出手段)
S 鋼帯(帯状材)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strip material advancing direction changing device used when continuously performing a plurality of treatments on a strip material such as a steel strip, and in particular, non-contacting while the strip material is levitated by a jet fluid from a cylinder. It relates to what is guided in.
[0002]
[Prior art]
When performing multiple treatments on a steel strip continuously, the traveling direction of the steel strip may be changed between processing equipment due to problems in the layout of the entire equipment, etc. An example of the direction changing device is described in JP-A-4-55254.
[0003]
As shown in FIGS. 5 and 6, this device is provided with a spiral belt-like portion 2 a that opposes the steel strip surface to the semicircular circumferential surface of the cylindrical floater 1 a, and a number of fluid jets are provided in the spiral belt-like portion 2 a. The fluid introduced into the cylindrical floater 1a is ejected from the fluid jet port 22 toward the steel strip surface, and the steel strip S is floated using the spiral strip portion 2a as the traveling passage. Guide in state.
[0004]
Further, in the cylindrical floater 1a, in order to make the width W K of the advancing passage according to the plate width of the steel strip S, a pair of side plates 5 having a shape along the widthwise outline of the spiral strip portion 2a. Is erected. The side plate 5 is formed at one end of a cylindrical body 31 having an inner diameter that can be externally fitted to the cylindrical floater 1a, and the cylindrical body 31 serves as a cover that closes the fluid ejection port 22a of the spiral belt-shaped portion serving as a non-traveling passage. ing.
[0005]
This side plate increases the flying height of the steel strip by increasing the pressure loss of the fluid flowing out between the end of the steel strip and the side plate, and when the end of the steel strip approaches the side plate, However, the force of pushing back the steel strip works, that is, a centering force is generated, and the steel strip has an action of preventing meandering and skewing. Further, the cover is installed for the purpose of preventing the fluid from being unnecessarily ejected from the portion of the spiral belt portion that becomes the non-traveling passage.
[0006]
[Problems to be solved by the invention]
However, in the belt-shaped material advancing direction changing device having such a side plate, when a thick steel strip (a highly rigid strip-shaped material) is passed through while being spirally bent, as shown in FIG. However, since the end of the steel strip S in the width direction contacts the side plate, wrinkles may occur in the steel strip S.
[0007]
In order to prevent this, the present inventors provided a cover in the cylinder, and the cover closed the fluid jets at both ends of the guide surface from the inside, and the width of the traveling passage was made to be a width corresponding to the width of the steel strip. (See Japanese Patent Application No. 8-40088). However, this device has a large amount of meandering of the steel strip because the above-mentioned centering force does not work as compared with a device having a side plate, and the fluid ejection port is blocked by the cover at the end in the width direction of the steel strip. There is a risk of reaching the position and vibrating or breaking.
[0008]
The present invention has been made paying attention to such points, and in a strip material advancing direction changing device that changes the advancing direction while guiding the strip material in a floating state by jetting of fluid, steel having a large plate thickness It is an object of the present invention to prevent wrinkles, vibrations, and folds from occurring at the end in the width direction even with a band-like material that is easy to meander like a band.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a guide surface with a predetermined width in the axial direction on the circumferential surface of the cylindrical body, the guide surface being opposed to the surface of the steel strip , and the guide surface is formed in a spiral band shape. A large number of fluid jets for ejecting fluid from the cylinder body toward the surface of the steel strip are provided, and the fluid jetted from the fluid jet port intersects the axial direction of the cylinder in a state where the steel strip is levitated from the guide surface. In the steel strip traveling direction changing device that changes the traveling direction by guiding in the direction, a cover that covers the fluid jets on both ends in the width direction of the guide surface is provided in the tubular body, and the cover is attached to the shaft of the tubular body. a moving means to be movable in a direction, a cover position detecting means for detecting the axial position of the cover, a strip edge position detector for detecting a widthwise end portion of the steel strip, the cover position covering position detection value and the by the detection means Based on the strip edge position values detected by belt edge position detecting means, the moving means to open a predetermined distance between the widthwise each end a guide surface side end portion of the cover of the steel strip comprising a moving amount control means for controlling the amount of movement, and the steel strip edge position detection means includes a strip edge position detecting device provided in the entry side and the delivery side of the guide surface of the steel strip, the respective based on the value detected by the detector to provide a steel strip traveling direction changing apparatus characterized by comprising a strip edge position calculating means for calculating the strip edge position.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view showing a strip material traveling direction changing device corresponding to an embodiment of the present invention, FIG. 2 is a schematic side view showing the arrangement of this device and the strip material, and FIG. It is a fragmentary sectional view of an apparatus.
[0012]
As shown in these drawings, the guide surface 2 that opposes the surface of the steel strip S is formed in the same two spirals centered on this axis at the center portion in the axial direction of one semicircular circumferential surface 11 of the cylindrical body 1. Is provided with a predetermined width W A (a dimension sufficiently larger than the width W S of the steel strip S to be guided) in the axial direction. Through holes (fluid jets) 22 are provided on the entire surface of the guide surface 2 at equal intervals. Such a guide surface 2 is formed by, for example, forming a portion corresponding to the space between the two outlines 21 of the cylindrical body 1 with a punching metal.
[0013]
On both ends in the width direction of the guide surface 2 in the cylindrical body 1, curved surfaces fitted in the semicircular circumferential surface 11 are outer peripheral surfaces, and the outer contour lines at both ends in the width direction are spiral outer contour lines 21 of the guide surface 2. The plate-shaped cover 3 formed in the same manner as is provided. As shown in FIG. 3, the cover 3 closes the through holes 22 at both ends in the width direction of the guide surface 2, and the fluid ejection width (traveling passage width) W K corresponds to the width W S of the steel strip S. is for the width (width W a less than the guide surface 2), for example, after the sheet was bent and so the outer circumferential surface is curved to be fitted in the semicircular surface 11, spiral The outer shape line 21 is cut into a band having a predetermined width.
[0014]
The cover 3 is movable in the axial direction of the cylindrical body 1 by a hydraulic cylinder 4 having a cylinder portion 41 fixed at a predetermined position in the cylindrical body 1. The cylinder portion 41 of the hydraulic cylinder 4 is fixed to, for example, a bracket protruding from the inner surface of the cylindrical body 1, and the tip of the rod portion 42 is fixed to the end surface in the width direction of the cover 3 (end surface opposite to the guide surface). Then, the end face is pushed and pulled by the advance and retreat of the hydraulic cylinder 4, so that the width for closing the guide face 2 by the cover 3 is changed. Further, by setting the advance / retreat range of the hydraulic cylinder 4, the end surface on the guide surface 2 side of the cover 3 is not positioned outside the guide surface 2 in the axial direction of the cylindrical body 1.
[0015]
A fluid is introduced into the cylindrical body 1 at a predetermined pressure by a fluid introduction device (not shown), and the introduced fluid is ejected from the cylindrical body 1 through the through hole 22 toward the surface of the steel strip S. It is like that. Since the steel strip S is guided and floated from the cylindrical body 1 along the guide surface 2 by the ejected fluid, the traveling direction thereof is changed.
[0016]
On the other hand, on the entry side and the exit side of the steel strip S with respect to the guide surface 2, strip-shaped material end position detection devices 5 (5L, 5R) for detecting the positions of the respective end portions in the width direction of the steel strip S are installed. Yes. As this strip | belt-shaped material edge part position detection apparatus 5, what is comprised by the light projector 5a and the light receiver 5b which are opposingly arranged on both sides of the steel strip S (refer FIG. 2) can be used, for example. By these strip-like material end position detecting devices 5L and 5R, the width direction end face position L I of the steel strip S immediately before entering the guide surface 2 and the width direction end face position L O of the steel strip S just after coming out of the guide surface 2 are obtained. , It is detected for each of the left and right ends. These positions L I, L O (L), as shown in FIG. 3, for example, as a reference point a predetermined point B R of from the guide surface 2 the outer side in the axial direction of the cylindrical body 1, from the point B R Detected as distance.
[0017]
Further, in the cylindrical body 1, cover position detectors 6 for detecting the width direction end face position K on the guide surface 2 side of the cover 3 at the center of the guide surface 2 in the steel strip traveling direction are respectively provided on the left and right covers 3. Is installed. As the cover position detector 6, for example, an analog position detector having a structure in which the unwinding length of the wire wound in a spiral shape as the cover 3 moves can be used. If 4 has a position sensor, this can be used. Here, the position K is also adapted to be detected as the distance from the position L I, L O to the same reference point B R.
[0018]
These position detection values L I , L O , and K are respectively input to the control device 7 composed of a microcomputer, for example, as shown in the block diagram of FIG. Processing is performed, and a current value I P corresponding to the pressure command value is output to the hydraulic cylinder 4.
[0019]
The position detection value L I from the strip material end position detection device 5R (5L) installed on the entry side and the position detection value L O from the strip material end position detection device 5R (5L) installed on the entry side are The strip material end position calculator 71 of the control device 7 inputs the average value of the detected values L I and L O to the strip material end position L (= (L I + L O ) / 2). The calculated strip-like material end position L is input to the adder / subtractor 72.
[0020]
The adder / subtractor 72 is supplied with a set value A from the strip material-cover interval setting unit 8 together with the calculated strip material end position value L, and the adder / subtractor 72 receives the strip material end position position. By subtracting the set value A from the calculated value L, the end face position (target value) K 0 of the cover 3 for the interval between the end face position of the steel strip S and the end face position of the cover 3 to be the set value A is calculated. The calculated end face position K 0 is input to the adder / subtractor 73. The strip-cover-cover interval setting unit 8 is configured to determine the interval between the end surface position in the width direction of the steel strip S and the end surface position on the guide surface 2 side of the cover 3 according to the plate width, plate thickness, material, and the like of the steel strip S. For example, an appropriate value A is selected by a human and input to the adder / subtractor 72 of the control device 7.
[0021]
The adder / subtractor 73 receives the position detection value K (the end face position of the cover 3 at the present time) from the cover position detector 6 together with the end face position K 0 . By subtracting the position detection value K from the end face position K 0, the amount of movement ΔK of the cover 3 necessary for the interval between the end face position of the steel strip S and the end face position of the cover 3 to be the set value A is calculated.
[0022]
The calculated cover movement amount ΔK is input to the PI control computing unit 74 and converted into a predetermined proportional integration operation signal f (ΔK), and this value is input to the pressure control device 75. The pressure control device 75 calculates a current command value I P for setting the movement amount of the hydraulic cylinder 4 to an amount corresponding to the signal f (ΔK), and outputs the current command value I P to the hydraulic cylinder 4. To do. Thereby, the advance / retreat amount of the hydraulic cylinder 4 becomes the amount of movement of the cover 3 as it is, and the cover 3 moves.
[0023]
In the controller 7, and the detection value K of the cover end surface position is fed back to the adder-subtracter 73, the value K is adapted to feedback control to repeat the correcting operation until the target value K 0 is made. Further, as described above, since the end surface of the cover 3 on the guide surface 2 side is not positioned outside the guide surface 2 in the axial direction of the cylindrical body 1, the target value K 0 is set at the position. When set, for example, an error signal is output.
[0024]
Of the controller 7, the adders / subtracters 72, 73, the PI control calculator 74, and the pressure controller 75 correspond to the movement amount control means of the present invention.
Thereby, the space | interval of the width direction end surface position of the steel strip S and the end surface position by the side of the guide surface 2 of the cover 3 comes to be hold | maintained to the setting value A. FIG.
[0025]
Therefore, the steel strip S is guided in a floating state along the guide surface 2 from the cylindrical body 1 by the fluid ejected from the traveling passage width W K corresponding to the distance between the left and right covers 3 (for example, gas or liquid such as air). The travel direction is changed, but at this time, the distance between the end surface position in the width direction of the steel strip S and the end surface position on the guide surface 2 side of the cover 3 is maintained at the set value A. The end in the width direction does not reach the position where the fluid ejection port 22 is blocked by the cover 3. Thereby, even when the steel strip S meanders, it is prevented that the width direction edge part vibrates or bends, and the generation | occurrence | production of a flaw is also prevented. Further, the flying height in the plate width direction becomes uniform, and the meandering amount itself decreases.
[0026]
In the above-described embodiment, the strip material end position detection devices 5L and 5R are installed on both the entrance side and the exit side of the steel strip S with respect to the guide surface 2, and the detection values L I and L O of the detection devices are detected. Since the average value (the value at the center portion of the guide surface 2 in the traveling direction of the steel strip) is the strip end position L, the steel strip S is not twisted and does not follow the guide surface 2 as shown in FIG. Even in such a case, the end position L of the belt-like material is accurately detected. Further, the contact between the detecting device and the steel strip S is avoided by installing the strip-like material end position detecting devices 5L and 5R on the entrance side and the exit side instead of the central portion of the guide surface 2 in the steel strip traveling direction. Can do.
[0027]
In the above embodiment, when the target value K 0 is set at a position outside the guide surface 2 in the axial direction of the cylindrical body 1, for example, an error signal is output. An excessive load is not applied to the hydraulic cylinder 4.
[0028]
Moreover, in the said embodiment, although the thing which detects the width direction end surface position K by the side of the guide surface 2 of the cover 3 is used as the cover position detector 6, it is not limited to this, The width direction ( Any position may be used as long as the position in the axial direction of the cylindrical body 1 is specified and the position of the end face in the width direction on the guide surface 2 side can be obtained as a result.
[0029]
【The invention's effect】
As described above, according to the belt-shaped material advancing direction changing device of the present invention, between the widthwise ends of the belt-shaped material to be passed through and the guide surface side end of the cover disposed inside the cylindrical body. Since the predetermined interval is controlled so that the end of the strip in the width direction does not reach the position where the fluid ejection port is blocked by the cover, even if the strip is meandering, The ends are prevented from vibrating or breaking, and wrinkles are prevented from occurring.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an embodiment of a strip material traveling direction changing device of the present invention.
FIG. 2 is a schematic side view showing the arrangement of the strip material traveling direction changing device and the strip material of FIG. 1;
3 is a partial cross-sectional view of the belt-shaped material advancing direction changing device of FIG. 1;
4 is a block diagram illustrating a control method performed by the belt-shaped material traveling direction changing device of FIG. 1;
FIG. 5 is a front view showing a conventional example of a strip material traveling direction changing device.
6 is a partial cross-sectional view of the belt-shaped material advancing direction changing device of FIG.
FIG. 7 is a perspective view showing a state in which the steel strip meanders without twisting along the cylindrical surface and is twisted by the belt-shaped material advancing direction changing device.
[Explanation of symbols]
1 Cylindrical body 2 Guide surface 3 Cover 4 Hydraulic cylinder (moving means)
5 (5R, 5L)
Band-shaped material edge position detection device (band-shaped material edge position detection means)
6 Cover position detector (Cover position detection means)
7. Control device (movement amount control means)
11 Semicircular surface 22 Through hole (fluid outlet)
71 Band material edge position calculator (band material edge position detection means, band material edge position calculation means)
S Steel strip (band material)

Claims (1)

鋼帯の面を対向させる案内面を筒体の周面に軸方向に所定幅で設け、この案内面は螺旋帯状に形成され、前記案内面に、筒体内から鋼帯の面に向けて流体を噴出させる複数の流体噴出口を設け、この流体噴出口から噴出する流体によって、鋼帯を案内面から浮上状態で筒体の軸方向と交差する方向に案内することで、その進行方向を変更する鋼帯進行方向変更装置において、
前記案内面の幅方向両端側の流体噴出口を覆うカバーを筒体内に設けるとともに、前記カバーを筒体の軸方向に移動可能とする移動手段と、前記カバーの前記軸方向の位置を検出するカバー位置検出手段と、前記鋼帯の幅方向端部を検出する鋼帯端部位置検出手段と、前記カバー位置検出手段によるカバー位置検出値および前記鋼帯端部位置検出手段による鋼帯端部位置検出値に基づいて、前記鋼帯の幅方向各端部とカバーの案内面側端部との間に所定の間隔が開くように前記移動手段の移動量を制御する移動量制御手段と、を備え、
前記鋼帯端部位置検出手段は、鋼帯の案内面への入側および出側に設けた鋼帯端部位置検出装置と、当該各検出装置による検出値に基づいて鋼帯端部位置を算出する鋼帯端部位置算出手段とを備えたことを特徴とする鋼帯進行方向変更装置。
A guide surface that opposes the surface of the steel strip is provided on the peripheral surface of the cylinder with a predetermined width in the axial direction. The guide surface is formed in a spiral band shape, and fluid is flowed from the cylinder to the surface of the steel strip on the guide surface. The fluid direction is changed by guiding the steel strip in a floating state from the guide surface in the direction intersecting the axial direction of the cylinder by the fluid ejected from the fluid ejection port. In the steel strip traveling direction changing device,
Covers for covering the fluid jet outlets at both ends in the width direction of the guide surface are provided in the cylinder, and moving means for allowing the cover to move in the axial direction of the cylinder, and detecting the position of the cover in the axial direction. a cover position detecting means, a strip edge position detector for detecting a widthwise end portion of the steel strip, the strip ends by cover position detection value and the steel strip edge position detecting means by said cover position detecting means Based on the position detection value, a moving amount control means for controlling the moving amount of the moving means so that a predetermined interval is opened between each width direction end of the steel strip and the guide surface side end of the cover; With
The steel strip edge position detection means includes a strip edge position detecting device provided in the entry side and the delivery side of the guide surface of the steel strip, the steel strip edge position based on a value detected by the respective detection devices A steel strip traveling direction changing device comprising a steel strip end position calculating means for calculating.
JP10982896A 1996-04-30 1996-04-30 Steel strip direction change device Expired - Fee Related JP3978620B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10982896A JP3978620B2 (en) 1996-04-30 1996-04-30 Steel strip direction change device

Publications (2)

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JPH09295026A JPH09295026A (en) 1997-11-18
JP3978620B2 true JP3978620B2 (en) 2007-09-19

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