JPH04162907A - Tension controller on inlet side of tandem mill - Google Patents

Tension controller on inlet side of tandem mill

Info

Publication number
JPH04162907A
JPH04162907A JP2286325A JP28632590A JPH04162907A JP H04162907 A JPH04162907 A JP H04162907A JP 2286325 A JP2286325 A JP 2286325A JP 28632590 A JP28632590 A JP 28632590A JP H04162907 A JPH04162907 A JP H04162907A
Authority
JP
Japan
Prior art keywords
tension
looper
deviation
tandem rolling
manipulated variable
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
JP2286325A
Other languages
Japanese (ja)
Inventor
Masanori Osako
大迫　政則
Tadashige Furuta
古田　忠重
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP2286325A priority Critical patent/JPH04162907A/en
Publication of JPH04162907A publication Critical patent/JPH04162907A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • 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
    • B21B37/48—Tension control; Compression control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

PURPOSE:To improve the quality of thickness by performing the constant control of tension on the inlet side so that the influence of tension fluctuation of material that is generated in a looper doesn't appear at a rolled stock on the inlet side of a tandem mill. CONSTITUTION:The tension controller on the inlet side of the tandem mill 5 is constituted so that the output of the looper 3 and tension on the inlet side of the mill 5 are controlled with 1st and 2nd tension control systems and, further, the tension deviation of the former is proportionally operated, manipulated variable that the deviation is made zero is determined and the manipulated variable of the later is corrected by this manipulated variable. In this way, even if both control systems are proportional/integral control systems, the control response of the later is quickened, influence that is affected to the rolled stock on the inlet side of the tandem mill by the tension fluctuation that is generated in the looper can be restrained and the quality of thickness control can be improved.

Description

【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） この発明は、入り側に圧延材を溜込むためのルーパーと
、圧延材に張力を作用させるためのブライドルロールと
を設置したタンデム圧延設備に係り、特に、タンデム圧
延機の入側張力を一定に保持するタンデム圧延機の入側
張力制御装置に関する。[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention includes a looper for accumulating rolled material on the entry side and a bridle roll for applying tension to the rolled material. The present invention relates to tandem rolling equipment, and particularly relates to an inlet tension control device for a tandem rolling mill that maintains the inlet tension of the tandem rolling mill constant.

（従来の技術） 第２図はこの種の従来のタンデム圧延機の入側張力制御
装置の構成を示すブロック図である。同図において、圧
延材１はペイオフリール２から巻き戻された後、ルーパ
ー３で溜込まれ、次いで、ブライドルロール４によって
張力が与えられてタンデム圧延機５で圧延される。ここ
で、ルーパー３はループカー駆動電動機６で駆動され、
このループカー駆動電動機６はループカー制御装置７に
よって制御される。また、ブライドルロール４はブライ
ドルロール駆動電動機８で駆動され、このブライドルロ
ール駆動電動機８はブライドルロール制御装置９によっ
て制御される。(Prior Art) FIG. 2 is a block diagram showing the configuration of an inlet tension control device for a conventional tandem rolling mill of this type. In the figure, a rolled material 1 is unwound from a payoff reel 2, collected in a looper 3, and then tensioned by a bridle roll 4 and rolled in a tandem rolling mill 5. Here, the looper 3 is driven by a loop car drive motor 6,
This loop car drive electric motor 6 is controlled by a loop car control device 7. Further, the bridle roll 4 is driven by a bridle roll drive motor 8, and this bridle roll drive motor 8 is controlled by a bridle roll control device 9.

一方、タンデム圧延機５の入側張力を制御するために、
ルーパー３とブライドルロール４との間、すなわち、ル
ーパー３の出側に張力検出器１０が設けられ、ブライド
ルロール４とタンデム圧延機５との間、すなわち、タン
デム圧延機５の入側にもう一つの張力検出器１１が設け
られている。このうち、張力検出器１０の張力検出値は
、ルーパー３の出側の圧延材１にかかる張力を設定する
張力基準部１２の張力目標値と合わせて減算器１３ａに
入力され、その偏差が張力補正部１３に加えられる。張
力補正部１３はこの張力偏差分を比例、積分演算し、ル
ープカー駆動電動機６の操作量としてループカー制御装
置７に加える。ループカー制御装置７はこの操作量に従
ってループカー駆動電動機６を制御する。これによって
、ルーパー３の出側の張力が張力基準部１２の張力目標
値になるように制御される。一方、張力検出器１１の張
力検出値は、タンデム圧延機５の入側の圧延材１にかが
る張力を設定する張力基準部１４の張力目標値と併せて
減算器１５ａに入力され、その偏差が張力補正部１５に
加えられる。張力補正部１５は偏差分を比例、積分演算
し、ブライドルロール駆動電動機８の操作量としブライ
ドルロール制御装置９に加える。ブライドルロール制御
装置９はこの操作量に従ってブライドルロール駆動電動
機８を制御する。これによって、タンデム圧延機５の入
側の張力が張力基準部１４の張力目標値になるように制
御される。On the other hand, in order to control the entry tension of the tandem rolling mill 5,
A tension detector 10 is provided between the looper 3 and the bridle roll 4, that is, on the exit side of the looper 3, and another tension detector is provided between the bridle roll 4 and the tandem rolling mill 5, that is, on the entry side of the tandem rolling mill 5. Two tension detectors 11 are provided. Among these, the tension detection value of the tension detector 10 is input to the subtractor 13a together with the tension target value of the tension reference section 12 that sets the tension applied to the rolled material 1 on the exit side of the looper 3, and the deviation is calculated as the tension. It is added to the correction section 13. The tension correction unit 13 performs proportional and integral calculations on this tension deviation, and applies the result to the loop car control device 7 as a manipulated variable for the loop car drive motor 6. The loop car control device 7 controls the loop car drive motor 6 according to this manipulated variable. As a result, the tension on the exit side of the looper 3 is controlled to be the tension target value of the tension reference section 12. On the other hand, the tension detection value of the tension detector 11 is input to the subtractor 15a together with the tension target value of the tension reference section 14 which sets the tension applied to the rolled material 1 on the entry side of the tandem rolling mill 5. The deviation is added to the tension correction section 15. The tension correction section 15 performs proportional and integral calculations on the deviation, and applies the result to the bridle roll control device 9 as the operation amount of the bridle roll drive motor 8 . The bridle roll control device 9 controls the bridle roll drive motor 8 according to this operation amount. Thereby, the tension on the inlet side of the tandem rolling mill 5 is controlled to be the tension target value of the tension reference section 14.

（発明が解決しようとする課題） 上述した従来のタンデム圧延機の入側張力制御装置は、
ルーパー３の出側張力を張力目標値に制御する第１の制
御系と、タンデム圧延機の入側張力を張力目標値に制御
する第２の張力制御系とで構成されている。しかるに、
これら二つの制御系はどちらも比例、積分処理をする張
力補正部を含んでおり、比例・積分制御系になっている
。(Problems to be Solved by the Invention) The entry tension control device of the conventional tandem rolling mill described above has the following problems:
It is comprised of a first control system that controls the exit side tension of the looper 3 to the tension target value, and a second tension control system that controls the input side tension of the tandem rolling mill to the tension target value. However,
These two control systems both include a tension correction section that performs proportional and integral processing, and are proportional and integral control systems.

このように、二つの制御系がどちらも比例・積分系であ
ると、応答速度の限界により板厚制御に悪影響を及ぼす
ことが分かった。すなわち、ルーパー３に張力変動があ
ると、第１の制御系かこれに応答するが、応答するまで
の張力変動がブライドルロール４にも影響を与える。こ
の影響を抑制するように第２の制御系が応答するが、こ
の制御系も比例・積分制御系であるため、タンデム圧延
機５の入側の張力に変動をもたらして板厚制御に悪影響
を及ぼす。In this way, it has been found that if the two control systems are both proportional/integral systems, the limit in response speed will have an adverse effect on plate thickness control. That is, when there is a tension variation in the looper 3, the first control system responds to this, but the tension variation until the response occurs also affects the bridle roll 4. The second control system responds to suppress this influence, but since this control system is also a proportional/integral control system, it causes fluctuations in the tension on the entry side of the tandem rolling mill 5, which adversely affects plate thickness control. affect

この発明は上記の問題点を解決するためになされたもの
で、ルーパーに発生した圧延材の張力変動の影響が、タ
ンデム圧延機の入側の圧延材に現れないようにして、好
適な板厚制御を実現することのできるタンデム圧延機の
入側張力制御装置を得ることを目的とする。This invention was made in order to solve the above problems, and it prevents the influence of the tension fluctuation of the rolled material generated in the looper from appearing on the rolled material on the entry side of the tandem rolling mill, and improves the thickness of the rolled material. The object of the present invention is to obtain an entrance tension control device for a tandem rolling mill that can realize control.

〔発明の構成〕[Structure of the invention]

（疎通を解決するための手段） 本発明は、タンデム圧延機の入側に圧延材を溜込むため
のルーパーを設置すると共に、このルーパーと前記タン
デム圧延機との間に、圧延材張力を作用させるためのブ
ライドルロールを設置したタンデム圧延設備において、
前記ルーパーおよびブライドルロール間の圧延材張力の
検出値と目標値との偏差を比例、積分演算してこの偏差
を零にする操作量を求め、この操作量に従って前記ルー
パーのループカー駆動電動機を制御する第１の張力制御
系と、前記ブライドルロールおよびタンデム圧延機間の
圧延材張力の検出値と目標値との偏差を比例、積分演算
してこの偏差を零にする操作量を求め、この操作量に従
ってブライドルロール駆動電動機を制御する第２の張力
制御系と、前記第１の張力制御系の圧延材張力の検出値
と目標値との偏差を比例演算してこの偏差を零にする操
作量を求め、この操作量によって前記第２の張力制御系
の操作量を補正する操作量補正系とを備えたことを特徴
とするものである。(Means for solving communication problems) The present invention provides a looper for storing rolled material on the inlet side of a tandem rolling mill, and applies tension of the rolled material between this looper and the tandem rolling mill. In tandem rolling equipment equipped with bridle rolls to
The deviation between the detected value and the target value of the rolling material tension between the looper and the bridle roll is computed proportionally and integrally to find a manipulated variable that makes this deviation zero, and the loop car drive motor of the looper is controlled in accordance with this manipulated variable. The deviation between the detected value and the target value of the tension of the rolled material between the first tension control system, the bridle roll and the tandem rolling mill is calculated proportionally and integrally to determine the operating amount that makes this deviation zero, and the operating amount is calculated. A second tension control system that controls the bridle roll drive motor according to the method, and a deviation between a detected value and a target value of the rolled material tension of the first tension control system are proportionally calculated, and an operation amount that makes this deviation zero is determined. and a manipulated variable correction system for correcting the manipulated variable of the second tension control system based on the manipulated variable.

（作　用） この発明においては、第１の張力制御系によってルーパ
ーの出側張力を制御すると共に、第２の張力制御系によ
ってタンデム圧延機の入側張力を制御し、さらに、第１
の張力制御系の張力偏差を比例演算してこの偏差を零に
する操作量を求め、この操作量によって第２の張力制御
系の操作量を補正するので、第１および第２の張力制御
系がどちらも比例・積分制御系であったとしても、第２
の張力制御系の制御応答が早められ、これによってルー
パーに発生した張力変動のタンデム圧延機入側の圧延材
に与える影響を抑えることができる。(Function) In the present invention, the first tension control system controls the exit tension of the looper, the second tension control system controls the entry tension of the tandem rolling mill, and the first tension control system controls the exit tension of the looper.
The tension deviation of the tension control system is calculated proportionally to find the manipulated variable that makes this deviation zero, and the manipulated variable of the second tension control system is corrected by this manipulated variable. Even if both are proportional/integral control systems, the second
The control response of the tension control system is accelerated, thereby suppressing the influence of tension fluctuations occurring in the looper on the rolled material on the entry side of the tandem rolling mill.

（実施例） 第１図はこの発明の一実施例の構成を示すブロック図で
あり、図中、第２図と同一の要素には同一の符号を付し
てその説明を省略する。(Embodiment) FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, the same elements as in FIG. 2 are given the same reference numerals, and the explanation thereof will be omitted.

ここでは、張力基準部１２と同様に、ルーパー３の出側
張力の目標値を設定する張力基準部１６と、この張力基
準部ＩＢの目標値を一方入力、張力検出器ＩＯで検出し
たルーパー３の出側張力の検出値を他方入力として張力
偏差を演算する減算器と、この減算器１５ａから出力さ
れた張力偏差を比例演算してブライドルロール駆動電動
機８の操作量を演算する張力補正部１７と、この張力補
正部１７から出力される操作量を張力補正部１５から出
力される操作量と加算して、補正された操作量をブライ
ドルロールに加える加算器９ａとを付加した構成になっ
ている。Here, similarly to the tension reference section 12, a tension reference section 16 that sets a target value of the output side tension of the looper 3, and a target value of this tension reference section IB are input to one side, and the looper 3 detected by the tension detector IO a subtracter that calculates a tension deviation using the detected value of the outlet side tension as the other input; and a tension correction unit 17 that calculates the operation amount of the bridle roll drive motor 8 by proportionally calculating the tension deviation output from the subtractor 15a. and an adder 9a that adds the manipulated variable output from the tension corrector 17 to the manipulated variable output from the tension corrector 15 and adds the corrected manipulated variable to the bridle roll. There is.

上記のように構成された本実施例の動作を、特に、第２
図に対して新たに要素を付加した部分を中心にして以下
に説明する。The operation of this embodiment configured as described above will be explained in particular in the second example.
A description will be given below, focusing on the part where new elements have been added to the diagram.

張力基準部１Ｂでルーパー３の出側張力の目標値を設定
する。この目標値は張力検出器１０の検出値と共に減算
器１７ａに加えられる。減算器Ｌ７ａはこれら張力の目
標値から張力検出器１０による検出値を減算して、張力
偏差を張力補正部１７に加える。A target value for the output side tension of the looper 3 is set in the tension reference section 1B. This target value is added to the subtracter 17a together with the detected value of the tension detector 10. The subtractor L7a subtracts the detected value by the tension detector 10 from these target tension values and adds the tension deviation to the tension correction section 17.

張力補正部１７はこの張力偏差を零にするための、ブラ
イドルロール駆動電動機８の操作量を比例演算によって
求める。この操作量は加算器９ａによって張力補正部１
５で演算された操作量に加えられ、その和がブライドル
ロール制御装置９に与えられる。The tension correction section 17 calculates the operation amount of the bridle roll drive motor 8 to make this tension deviation zero by proportional calculation. This operation amount is determined by the adder 9a in the tension correction section 1.
5 is added to the manipulated variable calculated in step 5, and the sum is given to the bridle roll control device 9.

この結果、ルーパー３によって生じた圧延材１の張力変
動分を抑えるための操作量が比例演算のみによって求め
られると共に、この操作量によってブライドルロール制
御装置９に加わる操作量を補正するので、比例・積分制
御系で問題となった応答遅れが改善され、好適な板厚制
御が可能となる。As a result, the operation amount for suppressing the tension fluctuation of the rolled material 1 caused by the looper 3 is obtained only by proportional calculation, and the operation amount applied to the bridle roll control device 9 is corrected by this operation amount. The response delay that was a problem with the integral control system has been improved, and suitable plate thickness control has become possible.

なお、上記実施例では、ルーパー３に対する制御系を構
成する張力基準部１２の他に、同様な張力目標値を設定
する張力基準部１６を設け、これによってブライドルロ
ール４に対する制御系の操作量補正系を構成したが、張
力基準部１６を除去してその代わりに張力基準部１２の
出力を減算器１７ａに加えるようにしても上述したと同
様な制御ができる。In addition, in the above embodiment, in addition to the tension reference section 12 configuring the control system for the looper 3, a tension reference section 16 for setting a similar tension target value is provided, thereby correcting the operation amount of the control system for the bridle roll 4. Although the system has been constructed, the same control as described above can be achieved even if the tension reference section 16 is removed and the output of the tension reference section 12 is applied to the subtracter 17a instead.

〔発明の効果〕〔Effect of the invention〕

以上の説明によって明らかなようにこの発明によれば、
ルーパー御系に張力変動が生じた場合でも、ブライドル
ロールの制御系の応答を速めることができ、比例・積分
制御系のみで対応でき難かったタンデム圧延機の入側張
力の一定制御が可能となり、これによって好適な板厚制
御が実現されると共に、圧延材の品質向上が図られる。As is clear from the above explanation, according to this invention,
Even when tension fluctuations occur in the looper control system, the response of the bridle roll control system can be sped up, making it possible to maintain constant control of the entry tension of tandem rolling mills, which was difficult to handle with only the proportional/integral control system. This achieves suitable plate thickness control and improves the quality of the rolled material.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの発明の一実施例の構成を示すブロック図、
第２図は従来のタンデム圧延機の入側張力制御装置の構
成を示すブロック図である。 ２・・・ペイオフリール、３・・・ルーパー、４・・・
ブライドルロール、５・・・タンデム圧延機、６・・・
ループカー駆動電動機、７・・・ループカー制御装置、
８・・・ブライドルロール駆動電動機、９・・・ブライ
ドルロール制御装置、１０．１１・・・張力検出器、１
２．１４．１８・・・張力基準部、１３．１５．１７・
・・張力補正部。 出願人代理人　　佐　　藤　　−雄FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 2 is a block diagram showing the configuration of an inlet tension control device of a conventional tandem rolling mill. 2... Payoff reel, 3... Looper, 4...
Bridle roll, 5...tandem rolling mill, 6...
Loop car drive electric motor, 7... loop car control device,
8... Bridle roll drive motor, 9... Bridle roll control device, 10.11... Tension detector, 1
2.14.18...Tension reference section, 13.15.17.
...Tension correction section. Applicant's agent Mr. Sato

Claims (1)

【特許請求の範囲】[Claims] タンデム圧延機の入側に圧延材を溜込むためのルーパー
を設置すると共に、このルーパーと前記タンデム圧延機
との間に、圧延材張力を作用させるためのブライドルロ
ールを設置したタンデム圧延設備において、前記ルーパ
ーおよびブライドルロール間の圧延材張力の検出値と目
標値との偏差を比例、積分演算してこの偏差を零にする
操作量を求め、この操作量に従って前記ルーパーのルー
プカー駆動電動機を制御する第１の張力制御系と、前記
ブライドルロールおよびタンデム圧延機間の圧延材張力
の検出値と目標値との偏差を比例、積分演算してこの偏
差を零にする操作量を求め、この操作量に従ってブライ
ドルロール駆動電動機を制御する第２の張力制御系と、
前記第１の張力制御系の圧延材張力の検出値と目標値と
の偏差を比例演算してこの偏差を零にする操作量を求め
、この操作量によって前記第２の張力制御系の操作量を
補正する操作量補正系とを備えたことを特徴とするタン
デム圧延機の入側張力制御装置。In tandem rolling equipment, a looper is installed on the entry side of the tandem rolling mill to collect the rolled material, and a bridle roll is installed between the looper and the tandem rolling mill to apply tension to the rolled material, The deviation between the detected value and the target value of the rolling material tension between the looper and the bridle roll is computed proportionally and integrally to find a manipulated variable that makes this deviation zero, and the loop car drive motor of the looper is controlled in accordance with this manipulated variable. The deviation between the detected value and the target value of the tension of the rolled material between the first tension control system, the bridle roll and the tandem rolling mill is calculated proportionally and integrally to determine the operating amount that makes this deviation zero, and the operating amount is calculated. a second tension control system that controls the bridle roll drive motor according to the
The deviation between the detected value of the rolled material tension of the first tension control system and the target value is calculated proportionally to determine the operating amount that makes this deviation zero, and this operating amount is used to control the operating amount of the second tension control system. An entry side tension control device for a tandem rolling mill, comprising a manipulated variable correction system for correcting.
JP2286325A 1990-10-24 1990-10-24 Tension controller on inlet side of tandem mill Pending JPH04162907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2286325A JPH04162907A (en) 1990-10-24 1990-10-24 Tension controller on inlet side of tandem mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2286325A JPH04162907A (en) 1990-10-24 1990-10-24 Tension controller on inlet side of tandem mill

Publications (1)

Publication Number Publication Date
JPH04162907A true JPH04162907A (en) 1992-06-08

Family

ID=17702927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2286325A Pending JPH04162907A (en) 1990-10-24 1990-10-24 Tension controller on inlet side of tandem mill

Country Status (1)

Country Link
JP (1) JPH04162907A (en)

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