JP2004009122A - Outlet side guide of hot-rolling coiler pinch roll - Google Patents

Outlet side guide of hot-rolling coiler pinch roll Download PDF

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Publication number
JP2004009122A
JP2004009122A JP2002168977A JP2002168977A JP2004009122A JP 2004009122 A JP2004009122 A JP 2004009122A JP 2002168977 A JP2002168977 A JP 2002168977A JP 2002168977 A JP2002168977 A JP 2002168977A JP 2004009122 A JP2004009122 A JP 2004009122A
Authority
JP
Japan
Prior art keywords
pinch roll
guide
hot
steel strip
outlet side
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
Application number
JP2002168977A
Other languages
Japanese (ja)
Inventor
Tsuneaki Kataoka
片岡 経明
Masatoshi Oshita
大下 正利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Priority to JP2002168977A priority Critical patent/JP2004009122A/en
Publication of JP2004009122A publication Critical patent/JP2004009122A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To prevent a tip of a steel strip from being hit and bent by an outlet side guide of a hot-rolling coiler pinch roll. <P>SOLUTION: A hollow part 1a is provided in a guide body 1 of an outlet side guide provided on an outlet side of a hot-rolling coiler pinch roll, an opening part to allow a movable skid 2 to be advanced/retracted along the line direction is formed in an upper face side of the hollow part 1a, and the movable skid 2 is advanced/retracted to/from the guide body 1 by a cylinder 5 for advancement/retraction disposed in the hollow part 1a of the guide body 1. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【産業上の利用分野】
この発明は、熱延鋼帯を巻き取るコイラ−の前面に配置されているピンチロ−ルの出側ガイドに関する。
【0002】
【従来の技術】
熱延鋼帯を圧延する熱間圧延ラインには、熱間仕上圧延機で圧延された鋼帯をコイルに巻き取るためのコイラ−が、直列に2基以上設置されているのが一般的である。そして、それぞれのコイラ−の前面には、鋼帯を挟み込んでコイラ−に導くピンチロ−ルと、ピンチロ−ルの入側ガイドおよび出側ガイドが設けられている。
【0003】
No.1コイラ−(一番前面側のコイラ−)で鋼帯を巻き取るときには、図3(a)に示すように、進行してきた鋼帯21をピンチロ−ル22aおよび22bで挟み込みつつ回転して、鋼帯21をコイラ−に送り込む。ピンチロ−ルのうち、下ピンチロ−ル22bは、通常ロ−ル上面の高さがパスラインと同じ高さとなるように、軸芯が一定の高さに保持されているが、上ピンチロ−ル22aは、鋼帯21をNo.1コイラ−に送り込むときには、軸芯がAの位置からBの位置に移動する。この結果、パスライン上を水平に進行していた鋼帯21の進行方向が、斜め下方(コイラ−の方向)に変更される。
【0004】
このとき、ピンチロ−ルの出側に配置された出側ガイド23は、回転軸23aの周りに矢印のように反時計回りに回転し、その先端部が上ピンチロ−ル22aに近接して、上ピンチロ−ル2aとの隙間を無くして、鋼帯21がNo.2コイラ−側に行かないようにガイドする。なお、図において、黒塗り部23bは出側ガイド23に設けたスキッド(3本程度の凸条部で構成される)であり、上ピンチロ−ル2aとの隙間を極力小さくするためのものである。また、符号24は入側ガイドである。
【0005】
一方、No.2コイラ−で鋼帯を巻き取るときには、図3(b)に示すように、上ピンチロ−ル22aを軸芯の位置を前記Aの位置まで上昇させて、下ピンチロ−ル22bとの間に鋼帯21の通過できる隙間を作るとともに、出側ガイド23を回転軸23aの周りに矢印のように時計回りに回転させ、スキッド23bの上面を下ピンチロ−ル22bの上面の高さまで下げ、出側ガイド23が鋼帯21の通板をじゃましないようにする。
【0006】
【発明が解決しようとする課題】
上述した従来の熱延コイラ−のピンチロ−ル出側ガイドには、次のような問題点がある。
【0007】
下ピンチロ−ルの上面の高さまで下げられた出側ガイドのスキッドの先端部と、下ピンチロ−ルのロ−ル周面との間には、図4に示したように、窪んだ部分25ができる。これは、スキッド23bの先端部分の形状が上ピンチロ−ル22aの周面に沿うように形成した上に凹の曲面であり、下ピンチロ−ル22bの上に凸の曲面とは合わないこと、また、下ピンチロ−ル22bの径が上ピンチロ−ル22aの径よりも小さく、スキッド23bの先端と下ピンチロ−ル22bの周面との間に隙間ができるからである。
【0008】
そして、そのような窪んだ部分25があると、鋼帯21の先端部21aが上下にばたつきやすい薄物の場合には、入側ガイド24に当たった先端部21aは、図の▲1▼の状態から▲2▼の状態のように二重に折れ曲がり、その二重に折れ曲がった先端部21aが、▲3▼のように前記窪み部25に突き当たり、さらに▲4▼のように三重に折れ曲がることになる。
【0009】
このように窪み部25があると、鋼帯21の先端が二重から三重に折れ曲がったり、二重に折れ曲がっていなくても、先端が窪み部25に突き当たって、その部分を不良品として切除するので、鋼帯の製造歩留が低下する。
【0010】
この発明は、従来技術の上述のような問題点を解消するためになされたものであり、出側ガイドに鋼帯の先端部が当たらないので、コブルが発生しない熱延コイラ−ピンチロ−ルの出側ガイドを提供することを目的としている。
【0011】
【課題を解決するための手段】
この発明に係る熱延コイラ−ピンチロ−ルの出側ガイドは、熱延コイラ−ピンチロ−ルの出側に設けられる出側ガイドにおいて、該出側ガイドのガイド本体に中空部を設けるとともに、該中空部の上面側に、可動スキッドをライン方向に沿って前後進させるための開口部を設け、前記ガイド本体の中空部に配置した前後進用シリンダ−により、前記可動スキッドをガイド本体から出し入れ可能にしたものである。
【0012】
この発明に係る熱延コイラ−ピンチロ−ルの出側ガイドにおいては、出側ガイドに設けられるスキッドを、出側ガイド本体から切り離して、鋼帯の搬送ライン方向に沿って前後進可能に構成しているので、出側ガイドよりも後流側に設置されたコイラ−で鋼帯を巻き取るときに、前記スキッドを下ピンチロ−ルに近づくように移動させ、下ピンチロ−ルとスキッドの先端との間に形成される窪みを小さくすることができる。
【0013】
したがって、窪みの部分に鋼帯の先端が当たることが少なくなり、コブルの発生を低減することができる。
【0014】
【発明の実施の形態】
本発明の実施の形態を図面を参照して説明する。図1は本発明の熱延コイラ−ピンチロ−ルの出側ガイドの説明図であり、(a)は出側ガイドの平面図、(b)は出側ガイドの側面図である。
【0015】
この出側ガイドは、出側ガイド本体1と、出側ガイド本体1の中空部1aの上面側に設けた溝状開口部1bを介して、中空部1aに出し入れ可能である3本の可動スキッド2と、3本の可動スキッド2を支持する支持部材3と、支持部材3に可動スキッド2と直交して設けた連結棒4と、連結棒4の両端部にシリンダ−ロッド5aが接続された2個のスキッド前後進用シリンダ−5とから構成されている。
【0016】
この出側ガイドにおいては、No.1コイラ−で巻き取るときには、可動スキッド2は図1(b)に示すように、出側ガイド本体1の中空部1aに格納されている。
【0017】
No.2コイラ−で巻き取るときには、図2に示すように、スキッド前後進用シリンダ−5により、可動スキッド2の支持部材3を、出側ガイド本体1の中空部1aの下面1cに沿って前進させ、可動スキッド2を出側ガイド本体1から突出させるとともに、下ピンチロ−ル22bに近接させて、窪み部6を極力小さくし、鋼帯1をトラブルなしに直進させるようにする。なお、図2中符号7は、支持部材3の前後進を容易にするためのトラニオンである。
【0018】
【発明の効果】
本発明により、コブルの発生が減少するので、鋼帯の圧延歩留が向上する。
【図面の簡単な説明】
【図1】本発明の熱延コイラ−ピンチロ−ルの出側ガイドの説明図であり、(a)は出側ガイドの平面図、(b)は出側ガイドの側面図である。
【図2】本発明の熱延コイラ−ピンチロ−ルの出側ガイドにおいて、可動スキッドを前進させた状態を示す図である。
【図3】従来の熱延コイラ−ピンチロ−ルと出側ガイドとの位置関係を示す図であり、(a)はNo.1コイラ−で巻き取るとき、(b)はNo.2コイラ−で巻き取るときを示す。
【図4】コブル発生のメカニズムを示す図である。
【符号の説明】
1 出側ガイド本体
1a 中空部
1b 溝状開口部
1c 中空部の下面
2 可動スキッド
3 支持部材
4 連結棒
5 スキッド前後進用シリンダ−
5a シリンダ−ロッド
6 窪み部
7 トラニオン
[0001]
[Industrial applications]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pinch roll exit guide disposed in front of a coiler for winding a hot-rolled steel strip.
[0002]
[Prior art]
A hot rolling line for rolling a hot-rolled steel strip is generally provided with two or more coilers in series for winding a steel strip rolled by a hot finish rolling mill into a coil. is there. On the front surface of each coiler, there are provided a pinch roll for sandwiching the steel strip and leading to the coiler, and a pinch roll entrance guide and a pinch roll exit guide.
[0003]
No. When the steel strip is wound by one coiler (the foremost coiler), as shown in FIG. 3A, the steel strip 21 which has been advanced is rotated while being pinched by pinch rolls 22a and 22b. The steel strip 21 is fed into the coiler. Of the pinch rolls, the lower pinch roll 22b has a shaft center maintained at a constant height so that the height of the roll upper surface is generally the same as the height of the pass line. No. 22a designates the steel strip 21 as No. 22a. When feeding into one coiler, the axis moves from the position A to the position B. As a result, the traveling direction of the steel strip 21 traveling horizontally on the pass line is changed obliquely downward (direction of the coiler).
[0004]
At this time, the exit guide 23 disposed on the exit side of the pinch roll rotates counterclockwise around the rotation shaft 23a as shown by an arrow, and its tip is close to the upper pinch roll 22a. The gap between the upper pinch roll 2a and the steel strip 21 is removed. Guide so as not to go to the 2 coilers side. In the drawing, a black portion 23b is a skid (constituted by about three convex portions) provided on the exit side guide 23, and is for minimizing a gap with the upper pinch roll 2a. is there. Reference numeral 24 denotes an entrance guide.
[0005]
On the other hand, No. When the steel strip is wound by a two-coiler, as shown in FIG. 3 (b), the position of the upper pinch roll 22a is raised to the position A, and the upper pinch roll 22a is interposed between the upper pinch roll 22a and the lower pinch roll 22b. While making a gap through which the steel strip 21 can pass, the exit guide 23 is rotated clockwise around the rotation shaft 23a as shown by an arrow, and the upper surface of the skid 23b is lowered to the height of the upper surface of the lower pinch roll 22b, and The side guide 23 does not interfere with the passing of the steel strip 21.
[0006]
[Problems to be solved by the invention]
The above-mentioned conventional pinch roll exit side guide of the hot rolled coiler has the following problems.
[0007]
As shown in FIG. 4, a recessed portion 25 is provided between the leading end of the skid of the exit guide lowered to the height of the upper surface of the lower pinch roll and the roll peripheral surface of the lower pinch roll. Can be. This is an upper concave surface formed so that the shape of the tip portion of the skid 23b follows the peripheral surface of the upper pinch roll 22a, and does not match the convex surface above the lower pinch roll 22b. Also, the diameter of the lower pinch roll 22b is smaller than the diameter of the upper pinch roll 22a, and a gap is formed between the tip of the skid 23b and the peripheral surface of the lower pinch roll 22b.
[0008]
If such a depressed portion 25 is present, if the tip portion 21a of the steel strip 21 is a thin object that easily flaps up and down, the tip portion 21a hitting the entry side guide 24 is in the state of (1) in the figure. From the double bent as shown in (2), and the double bent tip 21a strikes the recess 25 as shown in (3), and further bends three times as shown in (4). Become.
[0009]
When the recess 25 is provided, even if the tip of the steel strip 21 is bent from double to triple or not double, the tip abuts the recess 25 and the portion is cut off as a defective product. Therefore, the production yield of the steel strip decreases.
[0010]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the prior art, and a hot-rolled coiler-pinch roll in which no cobbles are generated because the leading end of the steel strip does not hit the exit guide. It is intended to provide an exit guide.
[0011]
[Means for Solving the Problems]
The outlet guide of the hot-rolled coiler pinch roll according to the present invention is an outlet guide provided on the outlet side of the hot-rolled coiler pinch roll, wherein a hollow portion is provided in a guide main body of the outlet guide. An opening for moving the movable skid forward and backward along the line direction is provided on the upper surface side of the hollow portion, and the movable skid can be taken in and out of the guide body by a forward / backward moving cylinder disposed in the hollow portion of the guide body. It was made.
[0012]
In the exit guide of the hot-rolled coiler pinch roll according to the present invention, the skid provided on the exit guide is separated from the exit guide main body so as to be able to move forward and backward along the steel strip conveying line direction. When the steel strip is wound by a coiler installed downstream of the exit guide, the skid is moved so as to approach the lower pinch roll, and the lower pinch roll and the tip of the skid are moved. The recess formed between them can be reduced.
[0013]
Therefore, the tip of the steel strip is less likely to hit the recessed portion, and the occurrence of cobbles can be reduced.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of an outlet guide of a hot-rolled coiler pinch roll according to the present invention. FIG. 1 (a) is a plan view of the outlet guide, and FIG. 1 (b) is a side view of the outlet guide.
[0015]
The movable guide has three movable skids which can be moved into and out of the hollow portion 1a through a groove-shaped opening portion 1b provided on the upper surface side of the hollow portion 1a of the discharge side guide body 1. 2, a supporting member 3 for supporting three movable skids 2, a connecting rod 4 provided on the supporting member 3 at right angles to the movable skid 2, and a cylinder-rod 5a connected to both ends of the connecting rod 4. It comprises two skid forward / backward moving cylinders-5.
[0016]
In this exit guide, no. When wound by one coiler, the movable skid 2 is stored in the hollow portion 1a of the delivery-side guide body 1, as shown in FIG.
[0017]
No. As shown in FIG. 2, when winding with a two-coiler, the support member 3 of the movable skid 2 is moved forward along the lower surface 1 c of the hollow portion 1 a of the exit-side guide body 1 by the skid forward / reverse cylinder 5. The movable skid 2 is made to protrude from the exit side guide main body 1 and is brought close to the lower pinch roll 22b so as to make the recess 6 as small as possible so that the steel strip 1 can travel straight without trouble. Reference numeral 7 in FIG. 2 denotes a trunnion for facilitating the forward and backward movement of the support member 3.
[0018]
【The invention's effect】
According to the present invention, since the occurrence of cobbles is reduced, the rolling yield of the steel strip is improved.
[Brief description of the drawings]
FIG. 1 is an explanatory view of an outlet guide of a hot-rolled coiler pinch roll according to the present invention, wherein (a) is a plan view of the outlet guide and (b) is a side view of the outlet guide.
FIG. 2 is a view showing a state in which a movable skid is advanced in an exit guide of a hot-rolled coiler pinch roll according to the present invention.
FIG. 3 is a diagram showing a positional relationship between a conventional hot-rolled coiler pinch roll and a delivery guide; (B) is No. 1 when wound up by one coiler. This shows the case of winding with two coilers.
FIG. 4 is a diagram showing a mechanism of occurrence of cobbles.
[Explanation of symbols]
DESCRIPTION OF REFERENCE NUMERALS 1 Outgoing guide body 1a Hollow portion 1b Groove-shaped opening 1c Lower surface of hollow portion 2 Movable skid 3 Support member 4 Connecting rod 5 Skid forward / backward cylinder
5a Cylinder-rod 6 Depression 7 Trunnion

Claims (1)

熱延コイラ−ピンチロ−ルの出側に設けられる出側ガイドにおいて、該出側ガイドのガイド本体に中空部を設けるとともに、該中空部の上面側に、可動スキッドをライン方向に沿って前後進させるための開口部を設け、前記ガイド本体の中空部に配置した前後進用シリンダ−により、前記可動スキッドをガイド本体から出し入れ可能にしたことを特徴とする熱延コイラ−ピンチロ−ルの出側ガイド。In the exit guide provided on the exit side of the hot rolling coiler pinch roll, a hollow portion is provided in the guide body of the exit guide, and a movable skid is moved forward and backward along the line direction on the upper surface side of the hollow portion. Wherein the movable skid can be taken in and out of the guide body by a forward / backward moving cylinder disposed in a hollow portion of the guide body. guide.
JP2002168977A 2002-06-10 2002-06-10 Outlet side guide of hot-rolling coiler pinch roll Pending JP2004009122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002168977A JP2004009122A (en) 2002-06-10 2002-06-10 Outlet side guide of hot-rolling coiler pinch roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002168977A JP2004009122A (en) 2002-06-10 2002-06-10 Outlet side guide of hot-rolling coiler pinch roll

Publications (1)

Publication Number Publication Date
JP2004009122A true JP2004009122A (en) 2004-01-15

Family

ID=30435739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002168977A Pending JP2004009122A (en) 2002-06-10 2002-06-10 Outlet side guide of hot-rolling coiler pinch roll

Country Status (1)

Country Link
JP (1) JP2004009122A (en)

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