JPH0360564B2 - - Google Patents
Info
- Publication number
- JPH0360564B2 JPH0360564B2 JP58131377A JP13137783A JPH0360564B2 JP H0360564 B2 JPH0360564 B2 JP H0360564B2 JP 58131377 A JP58131377 A JP 58131377A JP 13137783 A JP13137783 A JP 13137783A JP H0360564 B2 JPH0360564 B2 JP H0360564B2
- Authority
- JP
- Japan
- Prior art keywords
- rolled material
- meandering
- detector
- signal
- rolling mill
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 73
- 238000005096 rolling process Methods 0.000 claims description 44
- 238000012937 correction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Description
【発明の詳細な説明】 本発明は、圧延機の蛇行制御装置に関する。[Detailed description of the invention] The present invention relates to a meandering control device for a rolling mill.
圧延作業に於いて、圧延中の条件によつては圧
延材がロールの中央に留ることができずに第１図
に示すごとく圧延の進行とともにロール端部の方
へ移動してしまう現象がよく知られており、該現
象は蛇行と呼ばれている。 In rolling operations, depending on the conditions during rolling, the rolled material may not be able to stay in the center of the rolls, but may move toward the ends of the rolls as rolling progresses, as shown in Figure 1. This phenomenon is well known and is called meandering.
ここで、圧延材の蛇行について簡単に説明する
と、第１図は何等かの原因で圧延材２がワークロ
ール４の中央から右側へ寄つてしまつた状態を示
すのもので、このような場合圧延力は左右アンバ
ランスとなり、ロールギヤツプは右側のキヤツプ
の方が左側よりも広くなる。ところで、ワークロ
ール４の周速は左右で一様であるにも拘わらず右
側の方のギヤツプが広いので、単位時間当たりの
圧延材２の前積流量は右側の方が大きくなる。
又、入側での圧延材２の厚さが左右対称であると
すれば、より大きい体積流量の側では圧延材２が
より早く引込まれることになる。この結果圧延材
２は右側へ寄つてゆき、ロールギヤツプの左右差
が助長され更に急速に右端へ近付いてゆき、蛇行
という現象が起る。 Here, to briefly explain the meandering of the rolled material, Fig. 1 shows a state where the rolled material 2 has moved to the right side from the center of the work roll 4 for some reason. The force becomes unbalanced between the left and right sides, and the roll gap is wider on the right side than on the left side. By the way, although the circumferential speed of the work roll 4 is uniform on the left and right sides, the gap on the right side is wider, so the prevolume flow rate of the rolled material 2 per unit time is larger on the right side.
Furthermore, if the thickness of the rolled material 2 on the entry side is symmetrical, the rolled material 2 will be drawn in faster on the side with a larger volumetric flow rate. As a result, the rolled material 2 moves to the right side, the difference between the left and right roll gaps is amplified, and the rolled material 2 rapidly approaches the right end, resulting in a meandering phenomenon.
上記した蛇行が起ると安定した圧延を行なえず
甚しい場合には圧延不可能となる。従つて、安定
した圧延を行ない圧延の稼働率を向上させる為蛇
行制御は不可欠である。蛇行制御に於いて、理想
的には圧延材２の幅方向の中心と圧延機１の左右
中心とが一致するよう制御されることが望まし
い。しかし、現実には圧延材２の安定する通板位
置が機械の癖などにより常に圧延機１中心と一致
していると限らない。その為、両者に差がある場
合、強引に圧延材２を圧延機１中心にまで戻そう
として左右のロールギヤツプを操作すると、圧延
材２にシワなどの形状不良が生じたり、甚だしい
時は、圧延材２が２重に重なつてワークロール４
間に噛み込み、ワークロール４の表面を損傷する
絞り込み等の事故が発生し、圧延作業に支障を来
す虞れがあつた。 If the meandering described above occurs, stable rolling cannot be performed, and in severe cases, rolling becomes impossible. Therefore, meandering control is essential in order to perform stable rolling and improve the rolling operation rate. In the meandering control, ideally it is desirable that the widthwise center of the rolled material 2 and the lateral center of the rolling mill 1 coincide with each other. However, in reality, the stable passing position of the rolled material 2 does not always coincide with the center of the rolling mill 1 due to the peculiarities of the machine. Therefore, if there is a difference between the two, if you try to forcibly return the rolled material 2 to the center of the rolling mill 1 by operating the left and right roll gaps, the rolled material 2 may develop wrinkles or other shape defects, or in extreme cases, the rolling material 2 may The material 2 is doubled and the work roll 4 is rolled.
Accidents such as squeezing, which could cause damage to the surface of the work roll 4, could occur, and the rolling operation could be hindered.
特に、第２図に示すような連続ミルでは設備費
の点から、例えば、上流スタンドC1，C2，C3，
C4の圧下装置４１を電動式、下流スタンドC5，
C6の圧下装置４２を油圧式としている場合が多
く、この場合応答性の速い油圧式圧下装置４２で
しか蛇行制御は実施できない。このような連続ミ
ルの場合、圧延材２の蛇行制御は上流側の通板位
置にならつた位置を目標としなければならず、一
般にこの位置は圧延機１中心と一致しない。その
為、これらのスタンドC5，C6で、入側に圧延材
２の蛇行量を検出する蛇行検出器１３を設け、そ
の信号を基に圧下装置４２を操作して圧延機１の
左右中心と圧延材２の幅方向中心とを一致させる
ように蛇行制御を行なうと、前述と同様の不具合
を生じる虞れがあつた。 In particular, in the case of a continuous mill as shown in Fig. 2, from the point of view of equipment costs, for example, upstream stands C 1 , C 2 , C 3 ,
The lowering device 41 of C 4 is electrically operated, and the downstream stand C 5 ,
In many cases, the C 6 rolling down device 42 is of a hydraulic type, and in this case, meandering control can only be performed by the hydraulic rolling down device 42 with quick response. In the case of such a continuous mill, the meandering control of the rolled material 2 must be aimed at a position parallel to the upstream sheet passing position, and generally this position does not coincide with the center of the rolling mill 1. Therefore, in these stands C 5 and C 6 , a meandering detector 13 is installed on the entry side to detect the amount of meandering of the rolled material 2, and based on the signal, the rolling device 42 is operated to align the left and right center of the rolling mill 1. If the meandering control is performed so that the widthwise center of the rolled material 2 and the widthwise center of the rolled material 2 coincide with each other, there is a risk that the same problem as described above will occur.
本発明は斯かる実情を鑑みなしたもので、圧延
材が蛇行制御を行う圧延機を通過後、圧延材の通
板位置が安定する時点でその時の圧延材の幅方向
位置を記憶し、それを蛇行制御の目標位置として
以降の制御を行うことにより、急激なロールギヤ
ツプの変更による圧延材の形状不良を防止して安
定な圧延を可能とした蛇行制御装置を提供するこ
とを目的としている。 The present invention has been developed in view of the above circumstances, and after the rolled material passes through a rolling mill that performs meandering control, at the time when the passing position of the rolled material becomes stable, the current position in the width direction of the rolled material is memorized, and the current position in the width direction of the rolled material is stored. The object of the present invention is to provide a meandering control device that prevents defects in the shape of the rolled material due to sudden changes in roll gap and enables stable rolling by performing subsequent control with the target position of meandering control.
以下図面を参照しつつ本発明の実施例を説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第３図〜第６図は本発明の実施例の基本構成図
であり、図中１は圧延機、２は圧延材、３はロー
ドセルを示す。 3 to 6 are basic configuration diagrams of an embodiment of the present invention, in which 1 indicates a rolling mill, 2 indicates a rolled material, and 3 indicates a load cell.
ロードセル３はワークロール４、バツクアツプ
ロール５が受ける荷重を検出するものであり、ロ
ードセル３により検出された荷重は、例えば1000
トンの時にロードセル３の出力が電圧で10ボルト
となるというような換算率で電圧信号６に変換さ
れる。 The load cell 3 detects the load applied to the work roll 4 and the backup roll 5, and the load detected by the load cell 3 is, for example, 1000.
It is converted into a voltage signal 6 at a conversion rate such that the output of the load cell 3 becomes 10 volts when the voltage is 10 volts.
この電圧信号６は比較器７に入力されるが、比
較器７には予め設定信号８が入力されている。こ
の設定信号８と先の信号６とを比較することによ
り、圧延機１に圧延材２が噛み込んだことを検知
する。 This voltage signal 6 is input to a comparator 7, and a setting signal 8 is input to the comparator 7 in advance. By comparing this setting signal 8 and the previous signal 6, it is detected that the rolled material 2 is caught in the rolling mill 1.
具体的には、圧延機１に圧延材２が噛み込むと
荷重が発生するが、それは最大荷重1000トンの圧
延機では最低でも数10トン以上の値となるので、
それより少し小さい値、例えば50トン相当の電圧
0.5ボルトなどを設定信号８として比較器７に予
めセツトしておく。 Specifically, when the rolled material 2 gets caught in the rolling mill 1, a load is generated, and in a rolling mill with a maximum load of 1000 tons, the load is at least several tens of tons or more.
A slightly smaller value, for example, a voltage equivalent to 50 tons
A value such as 0.5 volt is set in advance in the comparator 7 as a setting signal 8.
荷重が発生し、相当する電圧信号６が設定信号
８の値を越えると、信号１０が比較器７から出力
され、タイミング回路９へ入力される。 When a load occurs and the corresponding voltage signal 6 exceeds the value of the set signal 8, a signal 10 is output from the comparator 7 and input to the timing circuit 9.
信号１０は、例えばタイミング回路９中の接点
（図示せず）を閉じるためのもので、タイミング
回路９の図示しない接点が閉じると、タイミング
回路９は圧延材２の幅方向位置が安定するタイミ
ングを計るべく予め回路中に設定されている一定
の時間の後に記憶回路１２を作動する電気信号１
１を出力する。この電気信号により記憶回路１２
が働くような構成となつている。 The signal 10 is, for example, for closing a contact (not shown) in the timing circuit 9. When the contact (not shown) of the timing circuit 9 is closed, the timing circuit 9 determines the timing at which the widthwise position of the rolled material 2 is stabilized. an electrical signal 1 which activates a memory circuit 12 after a certain time period preset in the circuit to be measured;
Outputs 1. This electrical signal causes the memory circuit 12 to
The configuration is such that it works.
このように圧延材２の幅方向位置が安定するタ
イミングを計る理由は、例えば、連続ミルの場
合、噛み込んだ圧延材２が下流側の次のスタンド
に噛み込み、スタンド間のルーパ２１（第２図参
照）が立ち上がつてスタンド間の張力が確立しな
いと通板位置が安定しないからであり、特に、板
厚の薄い圧延材の場合には、次々と下流側のスタ
ンドを通過して最後に最出側にある巻き取り機に
巻かれるまで通板位置が安定しないことがあるか
らである。 The reason why the timing for stabilizing the widthwise position of the rolled material 2 is determined is that, for example, in the case of a continuous mill, the rolled material 2 that has been bitten gets caught in the next stand on the downstream side, and the looper 21 (the looper 21 between the stands) This is because the threading position will not be stable unless the tension between the stands is established by the stand-up (see Figure 2).Especially in the case of thin rolled material, the material passes through the stands on the downstream side one after another. This is because the threading position may not be stabilized until the sheet is finally wound by the winder on the outermost side.
１３は圧延機１の入側に設けられた蛇行検出器
であつて、圧延材２の幅端位置を検出して圧延材
２の幅方向の位置を検出し得るものであり、本実
施例では、蛇行検出器１３として、圧延材２の輻
射光を検出して材料の幅方向両端のエツジ位置を
求める光学式検出器を用いている。 Reference numeral 13 denotes a meandering detector provided on the entrance side of the rolling mill 1, which can detect the position of the width end of the rolled material 2 to detect the position of the rolled material 2 in the width direction. As the meandering detector 13, an optical detector is used which detects the radiation light of the rolled material 2 and determines the edge positions at both ends of the material in the width direction.
すなわち、第４図に示すように、圧延材２の輻
射光を、幅方向左右（以下、便宜上、紙面に向つ
て右側を作業側、左側を駆動側と呼ぶ）に機械中
心０から等間隔に２台設置した蛇行検出器１３の
受光素子群２５で検出し、以下の原理で圧延材２
の幅方向の移動量を求める。 That is, as shown in FIG. 4, the radiant light of the rolled material 2 is distributed from the machine center 0 to the left and right in the width direction (hereinafter, for convenience, the right side will be referred to as the working side and the left side will be referred to as the driving side) from the machine center 0. It is detected by the light receiving element group 25 of the two meandering detectors 13 installed, and the rolled material 2 is detected by the following principle.
Find the amount of movement in the width direction.
熱間圧延される圧延材２の温度は大体750度か
ら1000度程度であり、その発する輻射光はレンズ
２６を通して板幅方向に多数配置された受光素子
群２５に導かれる。受光した素子には光エネルギ
に応じた電荷が蓄積され、この電荷を素子群２５
から順次読みだし、電荷量に対応した電気信号を
出力することにより、第５図及び第６図に示すよ
うな映像信号２４を得る。 The temperature of the hot-rolled material 2 is approximately 750 to 1000 degrees, and the emitted radiation light is guided through a lens 26 to a group of light receiving elements 25 arranged in large numbers in the width direction of the material. A charge corresponding to the light energy is accumulated in the element that receives the light, and this charge is transferred to the element group 25.
By sequentially reading the signals from 1 and 2 and outputting electric signals corresponding to the amount of charge, a video signal 24 as shown in FIGS. 5 and 6 is obtained.
この映像信号２４に於いて、信号が立ち上がつ
ている部分が圧延材２の幅方向左右のエツジ位置
で、この部分の受光素子群２５での位置は知るこ
とができるので、次のようにして視野中の圧延材
２端部の長さを求めることができる。 In this video signal 24, the portion where the signal rises is the left and right edge position in the width direction of the rolled material 2, and the position of this portion in the light receiving element group 25 can be known, so do the following: The length of the two ends of the rolled material within the field of view can be determined by
いま、添字Ｗ、Ｄで作業側、駆動側を表すと、
第４図に於いて圧延材２の幅方向のエツジ位置
dW，dDは、
dW＝XW−CW …(1)
dD＝XD−CD …(2)
となる。 Now, if the subscripts W and D represent the working side and the driving side,
In Fig. 4, the edge position in the width direction of the rolled material 2
d W and d D are as follows: d W =X W −C W …(1) d D =X D −C D …(2).
ここで、CW，CDは蛇行検出器１３の視野長
LW，LDの1/2の長さ、XW，XDは蛇行検出器１３
で検出された圧延材２の端部長さである。受光素
子群２５の総素子数をＮ個とすると、
αW＝LW／Ｎ …(3)
αD＝LD／Ｎ …(4)
が検出器１３の分解能となる。 Here, C W and C D are the field of view lengths of the meandering detector 13
L W , 1/2 length of L D , X W , X D are meandering detector 13
This is the end length of the rolled material 2 detected in . When the total number of elements in the light receiving element group 25 is N, the resolution of the detector 13 is α W =L W /N (3) α D =L D /N (4).
従つて、圧延材２のXW，XDの部分から輻射光
を受光した受光素子数がNW，NDと求められる
と、XW，XDは、
XW＝NW×αW …(5)
XD＝ND×αD …(6)
となる。 Therefore, when the number of light-receiving elements that receive radiation from the portions X W and X D of the rolled material 2 is determined as N W and N D , X W and X D are expressed as: X W = N W × α W ... (5) X D = N D × α D …(6).
NW，NDは先の映像信号２４の立ち上がり部分
から求められる。 N W and N D are obtained from the rising portion of the video signal 24 above.
以上の式(1)〜(6)を用いて圧延材２の中心Ｐの機
械中心０からの横ずれ量（蛇行量）△Ｘは、
△Ｘ＝（XW−XD）／２ …(7)
と求められる。 Using the above formulas (1) to (6), the amount of lateral deviation (meandering amount) △X of the center P of the rolled material 2 from the machine center 0 is calculated as follows: △X = (X W - X D ) / 2 ... (7 ) is required.
上記蛇行量△Ｘを求める演算処理は前記映像信
号２４を基に第３図の演算器２３にて行われ、そ
の出力２０は例えば、圧延材２が50mmワークサイ
ド側へずれたときに10ボルト、反対のドライブサ
イドに50mmずれた時は−10ボルト出力する等と符
号を決めて、前記記憶回路１２と加算器１４へ入
力されている。更に、加算器１４には前記記憶回
路１２の出力１９も入力されており、加算器１４
で蛇行検出器１３の出力２０と比較演算され、偏
差１６が求められるように構成されている。 The arithmetic processing for determining the meandering amount ΔX is performed by the arithmetic unit 23 shown in FIG. 3 based on the video signal 24, and the output 20 is, for example, 10 volts when the rolled material 2 shifts 50 mm toward the work side. , when the voltage is shifted by 50 mm to the opposite drive side, -10 volts are output. Furthermore, the output 19 of the storage circuit 12 is also input to the adder 14, and the adder 14
The configuration is such that the output 20 of the meandering detector 13 is compared with the output 20 of the meandering detector 13, and the deviation 16 is obtained.
加算器１４の出力１６は蛇行制御調節器１５へ
入力され、ここで偏差１６に応じて左右の圧下修
正信号１７，１８が演算される。 The output 16 of the adder 14 is input to a meandering control regulator 15, where left and right reduction correction signals 17, 18 are calculated according to the deviation 16.
この圧下修正信号１７，１８は、先に圧延材２
の蛇行の説明のところで述べたものと逆の原理で
蛇行を修正するため、圧延材２が蛇行した（寄つ
ていく）方向のロールギヤツプを狭くし、反対側
を同量だけ広くするように符号と量を蛇行調節器
１５で決められて加算アンプ２７，２８に各々入
力される。 These rolling correction signals 17 and 18 are applied to the rolled material 2 first.
In order to correct meandering using the opposite principle to that described in the explanation of meandering, the roll gap in the direction in which the rolled material 2 meandered (approached) was narrowed, and the opposite side was widened by the same amount. The amount is determined by the meandering adjuster 15 and input to summing amplifiers 27 and 28, respectively.
加算アンプ２７，２８には、上下ワークロール
４間の幅方向左右のロールギヤツプを調節する圧
下装置である油圧シリンダ２９，３０に取付けら
れてこれらのピストンの動きを検出する変化検出
器３１，３２からの変位信号３３，３４も入力さ
れており、加算アンプ２７，２８で前記圧下修正
信号１７，１８と実際の油圧シリンダ２９，３０
のピストンの変位信号３３，３４との比較が行わ
れ、その差により出力される信号３５，３６で前
記油圧シリンダ２９，３０に圧油を給排するサー
ボ弁３７，３８が調整され、圧延材２が蛇行した
側のロールギヤツプが自動的に狭くなり、反対側
が同量だけ広くなるように制御される。このた
め、先の蛇行の説明のところで述べたことと逆の
現象で蛇行が修正される。 The summing amplifiers 27 and 28 are connected to change detectors 31 and 32 that are attached to hydraulic cylinders 29 and 30, which are lowering devices that adjust the left and right roll gap in the width direction between the upper and lower work rolls 4, and detect the movement of these pistons. displacement signals 33 and 34 are also input, and addition amplifiers 27 and 28 combine the reduction correction signals 17 and 18 with the actual hydraulic cylinders 29 and 30
The servo valves 37 and 38 for supplying and discharging pressure oil to and from the hydraulic cylinders 29 and 30 are adjusted based on the signals 35 and 36 output based on the difference between the displacement signals 33 and 34 of the piston. The roll gap on the side where 2 meandered is automatically narrowed, and the roll gap on the opposite side is controlled to be widened by the same amount. Therefore, the meandering is corrected by a phenomenon opposite to that described in the explanation of the meandering above.
次に作動を説明する。 Next, the operation will be explained.
圧延材２が移走し、その先端が圧延機１に噛込
まれると、噛み込みによる圧下力の変動がロード
セル３に検出され、圧下力変動は信号６として比
較器７に入力される。比較器７では設定信号８と
荷重信号６とを比較し、荷重信号６が設定信号８
より大きい値であつた場合に圧延材２の噛み込み
があつてとして、信号１０をタイミング発生回路
９へ出力する。タイミング発生回路９では該信号
１０を受けて、圧延材２が安定する一定時間後に
タイミング信号１１を記憶回路１２へ入力する。
記憶回路１２へは蛇行検出器１３により検出され
た圧延材２の幅方向の位置、即ち蛇行量が信号２
０として入力されており、タイミング信号１１が
入力されると、この入力時の圧延材２の位置が記
憶回路１２に記憶され、記憶された圧延材２の位
置が蛇行制御の目標値信号１９として加算器１４
へ入力される。蛇行検出器１３からの信号２０は
加算器１４にも直接入力されており、加算器１４
では目標値である記憶回路１２からの信号１９
と、時々刻々と蛇行検出器１３で検出される圧延
材２の幅方向のずれ量、すなわち蛇行量である信
号２０とが比較演算され、その偏差１６が蛇行制
御調節器１５へ入力される。 When the rolled material 2 is moved and its tip is bitten by the rolling mill 1, the load cell 3 detects the variation in rolling force due to the biting, and the rolling force variation is inputted as a signal 6 to the comparator 7. The comparator 7 compares the setting signal 8 and the load signal 6, and the load signal 6 is the setting signal 8.
If the value is larger, it is assumed that the rolled material 2 is jammed, and a signal 10 is output to the timing generation circuit 9. The timing generation circuit 9 receives the signal 10 and inputs the timing signal 11 to the storage circuit 12 after a certain period of time when the rolled material 2 is stabilized.
The storage circuit 12 receives a signal 2 indicating the widthwise position of the rolled material 2 detected by the meandering detector 13, that is, the amount of meandering.
0, and when the timing signal 11 is input, the position of the rolled material 2 at the time of this input is stored in the memory circuit 12, and the stored position of the rolled material 2 is used as the target value signal 19 for meandering control. Adder 14
is input to. The signal 20 from the meandering detector 13 is also directly input to the adder 14;
Now, the signal 19 from the memory circuit 12 which is the target value
The deviation amount in the width direction of the rolled material 2 detected by the meandering detector 13 from time to time, that is, the signal 20 representing the meandering amount, is compared and calculated, and the deviation 16 is inputted to the meandering control regulator 15.
而して、蛇行制御調節器１５の出力信号１７，
１８を基に油圧シリンダ２９，３０に圧油を給排
するサーボ弁３７，３８が先に述べたように調整
され、左右のロールギヤツプが調整されて圧延材
２の幅方向位置が先の記憶回路１２の出力１９と
一致するように制御される。このようにして、圧
延材２は圧延中、圧延機１に噛み込んだ後の適当
な時点の幅方向の位置を常時維持するように制御
される。 Thus, the output signal 17 of the meandering control regulator 15,
Based on 18, the servo valves 37 and 38 for supplying and discharging pressure oil to the hydraulic cylinders 29 and 30 are adjusted as described above, the left and right roll gaps are adjusted, and the widthwise position of the rolled material 2 is adjusted to the previous memory circuit. 12 is controlled to match the output 19 of 12. In this way, the rolled material 2 is controlled to always maintain the widthwise position at an appropriate point after being bitten by the rolling mill 1 during rolling.
以上述べた如く本実施例では蛇行制御の目標値
を圧延材２が圧延機１に噛み込んだ後の幅方向位
置が安定した時点の通板位置とするので、圧延に
支障を来たさない蛇行制御が可能である。 As described above, in this embodiment, the target value of the meandering control is set to the strip passing position at the time when the widthwise position of the rolled material 2 is stabilized after it has bitten into the rolling mill 1, so that rolling is not hindered. Meandering control is possible.
尚上記実施例では圧延材の噛み込みをロードセ
ルによつて検知したが、ホツトメタルデイテクタ
等圧延材の噛み込みを直接或いは間接に検知し得
るものであればどのような検知手段を用いても良
い。 In the above embodiments, the jamming of the rolled material was detected using a load cell, but any detection means that can directly or indirectly detect the jamming of the rolled material, such as a hot metal detector, may be used. good.
また、上記実施例では、熱間圧延材の輻射光を
検知する方式の蛇行検出器の例を示したが、第７
図に示すように検出器１３′と反対側に圧延材２
を挟んで光源３９を置き、圧延材２が光源を遮光
する位置を検出して幅端位置を求め演算器４０に
より蛇行量を求めるタイプの検出器や、圧延機入
側の圧延材をはさんで幅方向に自由に移動可能な
押えロールを設け、圧延材が左右に動くことによ
り生じるロール変位の左右差を求めることにより
蛇行を検出する機械式の検出器なども適用でき
る。 Further, in the above embodiment, an example of a meandering detector that detects radiation light from a hot rolled material was shown, but the seventh embodiment
As shown in the figure, the rolled material 2 is located on the opposite side of the detector 13'.
A detector of the type that places the light source 39 across the rolled material 2, detects the position where the rolled material 2 blocks the light source, determines the width end position, and calculates the meandering amount using the calculator 40, or a type of detector that sandwiches the rolled material on the entrance side of the rolling machine. A mechanical detector that detects meandering by providing a presser roll that can freely move in the width direction and determining the left-right difference in roll displacement caused by the left-right movement of the rolled material can also be applied.
また、圧延材の蛇行量は、上記実施例では圧延
機の機械中心から測つているが、圧延材の片側の
一定点（例えば、テーブルローラ端を基準にする
など）から測るなど、本発明の要旨を逸脱しない
範囲で種々変更できることは言うまでもない。 In addition, although the meandering amount of the rolled material is measured from the center of the rolling mill in the above embodiment, it may be measured from a fixed point on one side of the rolled material (for example, using the end of the table roller as a reference). It goes without saying that various changes can be made without departing from the gist.
以上に述べた如く本発明によれば、圧延材の圧
延機に噛み込んだ後の幅方向位置が安定した時点
の通板位置を圧延機入側に設けた検出器で検出し
て記憶し、その記憶した信号を当該スタンドのみ
の圧下装置に蛇行制御の目標値として与え得るの
で、急激な位置修正による圧延材の形状不良や絞
り込み等を発生することなくリアルタイムで修正
して安定した蛇行制御を行うことができる。 As described above, according to the present invention, the passing position at the time when the widthwise position of the rolled material after it has been bitten by the rolling mill is stabilized is detected and memorized by a detector provided on the entry side of the rolling mill, The stored signal can be given to the rolling device of the stand alone as the target value for meandering control, so corrections can be made in real time and stable meandering control can be achieved without causing defects in the shape of the rolled material or narrowing due to sudden positional changes. It can be carried out.
第１図は蛇行のメカニズムを示す為の説明図、
第２図は連続ミルの構成の一例図、第３図は本発
明の実施例のブロツク図、第４図は蛇行検出器の
一例を示す概略図、第５図、第６図は第４図の蛇
行検出器により出力される映像信号を示すグラ
フ、第７図は蛇行検出器の別の例を示す概略図で
ある。
１は圧延器、２は圧延材、３はロードセル、７
は比較器、９はタイミング回路、１２は記憶回
路、１３は蛇行検出器、１４は加算器、１５は蛇
行制御調節器を示す。
Figure 1 is an explanatory diagram to show the meandering mechanism.
Fig. 2 is an example of the configuration of a continuous mill, Fig. 3 is a block diagram of an embodiment of the present invention, Fig. 4 is a schematic diagram showing an example of a meandering detector, Figs. 5 and 6 are Fig. 4. FIG. 7 is a schematic diagram showing another example of the meandering detector. 1 is a rolling machine, 2 is a rolled material, 3 is a load cell, 7
9 is a comparator, 9 is a timing circuit, 12 is a storage circuit, 13 is a meandering detector, 14 is an adder, and 15 is a meandering control adjuster.
Claims (1)
検出器の信号を基に、圧延機の作業側、駆動側の
ロールギヤツプを調節して蛇行を修正する蛇行制
御装置に於いて、前記検出器を圧延機の入側に設
け、圧延材の該圧延機への噛み込みを直接、或い
は間接的に検出する検出器と、該検出器の信号を
受けて予め設定された所定時間後に出力するタイ
ミング回路と、該タイミング回路の信号を受けて
前記蛇行検出器の出力信号を記憶する記憶回路
と、該記憶回路の出力と前記蛇行検出器の出力と
を比較演算する演算器と、該演算器の出力信号を
基に圧下修正信号を演算する蛇行制御調節器とを
設けたことを特徴とする圧延機の蛇行制御装置。1. In a meandering control device that is provided with a detector that detects the amount of meandering of a rolled material, and corrects meandering by adjusting the roll gap on the working side and drive side of the rolling mill based on the signal from the detector, A detector is installed on the inlet side of the rolling mill, and a detector that directly or indirectly detects whether the rolled material is caught in the rolling mill, and a detector that receives a signal from the detector and outputs it after a preset time. a timing circuit; a storage circuit that receives a signal from the timing circuit and stores an output signal of the meandering detector; an arithmetic unit that compares the output of the storage circuit with the output of the meandering detector; and the arithmetic unit. 1. A meandering control device for a rolling mill, comprising: a meandering control regulator that calculates a reduction correction signal based on an output signal of the rolling mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58131377A JPS6024213A (en) | 1983-07-19 | 1983-07-19 | Control device of meandering in rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58131377A JPS6024213A (en) | 1983-07-19 | 1983-07-19 | Control device of meandering in rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6024213A JPS6024213A (en) | 1985-02-06 |
| JPH0360564B2 true JPH0360564B2 (en) | 1991-09-17 |
Family
ID=15056516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58131377A Granted JPS6024213A (en) | 1983-07-19 | 1983-07-19 | Control device of meandering in rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6024213A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4829662A (en) * | 1971-08-23 | 1973-04-19 | ||
| JPS5633114A (en) * | 1979-08-22 | 1981-04-03 | Nippon Steel Corp | Controlling method for rolling reduction in rolling mill |
-
1983
- 1983-07-19 JP JP58131377A patent/JPS6024213A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4829662A (en) * | 1971-08-23 | 1973-04-19 | ||
| JPS5633114A (en) * | 1979-08-22 | 1981-04-03 | Nippon Steel Corp | Controlling method for rolling reduction in rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6024213A (en) | 1985-02-06 |
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