JPH11129029A - Looper roll control method - Google Patents

Looper roll control method

Info

Publication number
JPH11129029A
JPH11129029A JP29556197A JP29556197A JPH11129029A JP H11129029 A JPH11129029 A JP H11129029A JP 29556197 A JP29556197 A JP 29556197A JP 29556197 A JP29556197 A JP 29556197A JP H11129029 A JPH11129029 A JP H11129029A
Authority
JP
Japan
Prior art keywords
looper
speed
section
roll
steel sheet
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.)
Granted
Application number
JP29556197A
Other languages
Japanese (ja)
Other versions
JP3722179B2 (en
Inventor
Akio Yuzuriha
顕夫 杠
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.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric 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 Yaskawa Electric Corp filed Critical Yaskawa Electric Corp
Priority to JP29556197A priority Critical patent/JP3722179B2/en
Publication of JPH11129029A publication Critical patent/JPH11129029A/en
Application granted granted Critical
Publication of JP3722179B2 publication Critical patent/JP3722179B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To accomplish an exchange of the looper roll synchronous position in a given time even when the looper exit section speed is varied in such a way as to be increased or the like. SOLUTION: In the looper roll control method wherein the looper roll synchronous position is changed from PS1 to PS2 for the steel plate accumulation looper in a steel plate processing line, a speed of a steel plate 10 at the looper exit section is monitored during the time the looper synchronous position being changed, and an inlet section speed of the looper is determined based on the monitored speed so that a difference of speeds at the inlet section and the exit section is made constant.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、鋼板処理ラインに
おける鋼板蓄積用ルーパのルーパロール同期位置を切り
替えるルーパロール制御方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a looper roll control method for switching a looper roll synchronous position of a steel sheet storage looper in a steel sheet processing line.

【0002】[0002]

【従来の技術】図3は従来のルーパ装置1の構成を示す
図である。図3に示されるように、ルーパ装置1は、入
側セクションの鋼板10の通板速度と中央セクションの
鋼板10の通板速度との差、または中央セクションの鋼
板10の通板速度と出側セクションの鋼板10の通板速
度との差を吸収するために、ルーパロール1aを支持す
るルーパキャリッジが可動する。すなわち、鉄鋼プロセ
スラインにおいて、中央セクションは、鋼板10を一定
速度で通板することが要求されるが、中央セクションの
入出側に位置する入側セクション及び出側セクション
は、鋼板の処理上、鋼板の通板速度が変動する。そこ
で、ルーパ装置1により、中央セクションと入側セクシ
ョン及び出側セクションとの通板速度の差を吸収してい
る。従来のルーパ装置1において、ルーパ入側鋼板残長
が十分に長い場合には、ルーパロール1aをルーパロー
ル同期位置PSに設定する。一方、ルーパ入側鋼板残長
が所定の値以下になったときは、ルーパロール1aを移
動してルーパロール同期位置PSを切り替えている。
2. Description of the Related Art FIG. 3 is a diagram showing a configuration of a conventional looper device 1. As shown in FIG. As shown in FIG. 3, the looper device 1 is configured to control the difference between the passing speed of the steel sheet 10 in the entry section and the passing speed of the steel sheet 10 in the central section, or the passing speed of the steel sheet 10 in the central section and the exit side. The looper carriage that supports the looper roll 1a moves to absorb the difference between the section steel sheet 10 and the passing speed. That is, in the steel process line, the central section is required to pass the steel sheet 10 at a constant speed, but the entrance section and the exit section located on the entrance / exit side of the central section are required to process the steel sheet. The passing speed of the sheet fluctuates. Thus, the looper device 1 absorbs the difference in the passing speed between the center section, the entry section, and the exit section. In the conventional looper device 1, the looper entry side steel remaining length if long enough, set the looper roll 1a to looper roll synchronization position P S. On the other hand, when the looper inlet side steel remaining length is equal to or less than a predetermined value, it switches the looper roll synchronization position P S by moving the looper roll 1a.

【0003】[0003]

【発明が解決しようとする課題】ところで、上述した従
来のルーパ装置にあっては、次のような問題点があっ
た。即ち、ルーパロールの同期位置を変更している間
は、ルーパ入側セクションは最大速度に固定されている
ため、ルーパ出側セクションの速度が増加した場合は、
ルーパ入側、出側の速度差が減少してルーパに蓄積され
ていく鋼板の長さが低下してしまう。ルーパロールを同
期位置に切替えるための時間は、ルーパに蓄積されてい
く鋼板の長さに依存するため、上述のように鋼板の蓄積
長さが変わると、切替え時間も変わってしまうという問
題がある。そこで本発明は、ルーパ出側セクション速度
に増加などの変動があった場合でも、ルーパロールの同
期位置の切替えを一定時間で完了することができるルー
パロール制御方法を提供することを目的とす。
The above-mentioned conventional looper device has the following problems. In other words, while the synchronous position of the looper roll is being changed, the looper entry section is fixed at the maximum speed, so if the speed of the looper exit section increases,
The speed difference between the looper entrance side and the exit side decreases, and the length of the steel sheet accumulated in the looper decreases. Since the time for switching the looper roll to the synchronous position depends on the length of the steel sheet accumulated in the looper, there is a problem that if the accumulation length of the steel sheet changes as described above, the switching time also changes. Therefore, an object of the present invention is to provide a looper roll control method capable of completing the switching of the synchronous position of the looper roll in a fixed time even when there is a fluctuation such as an increase in the looper exit section speed.

【0004】[0004]

【課題を解決するための手段】上記目的達成のため、本
発明によるルーパロール制御方法は、鋼板処理ラインに
おける鋼板蓄積用ルーパのルーパロール同期位置を切替
えるルーパロール制御方法において、ルーパロール同期
位置切替え中に、ルーパ出側セクションの鋼板の速度を
監視し、この速度に基づいて、ルーパ入側セクションと
出側セクションの速度の差が一定になるように、前記ル
ーパ入側セクションの速度を決定するものである。この
方法によれば、ルーパ出側ライン速度の変動に応じてル
ーパ入側ライン速度を変化させるので、ルーパに蓄積さ
れる鋼板の長さが常に一定に保たれる。よって、ルーパ
ロールの同期位置切替えを一定時間内に完了することが
できる。
In order to achieve the above object, a looper roll control method according to the present invention is directed to a looper roll control method for switching a looper roll synchronous position of a steel sheet storage looper in a steel sheet processing line. The speed of the steel sheet in the exit section is monitored, and the speed of the looper entry section is determined based on the speed so that the difference between the speeds of the looper entry section and the exit section is constant. According to this method, the length of the steel sheet stored in the looper is always kept constant because the line speed of the looper entrance side is changed according to the fluctuation of the line speed of the looper exit side. Therefore, the switching of the synchronous position of the looper roll can be completed within a certain time.

【0005】[0005]

【発明の実施の形態】以下、本発明の実施の形態を、図
面例と共に説明する。図1は本発明によるルーパロール
制御方法による実施の形態であるルーパ装置2の概略構
成図であり、図2はルーパ装置2の入側セクション速度
とルーパロール位置の切替えを示すタイミングチャート
であり、以下の式(1)〜式(3)に基づいて制御され
る。 l1=LH−LL =1/2VE・(2t1−(2VE/α)) …(1) t1=(LH−LL)/VE+VE/α …(2) l2=VE・t1+VE 2/2α …(3) l1:ルーパロール同期位置切り替え時の鋼板蓄積長さ t1:ルーパロール同期位置切り替え時の所要時間 l2:ルーパロール同期位置切り替え時からの入側鋼板
払い出し長さ LH:ルーパの長端同期位置 LL:ルーパの短端同期位置 VE :ルーパ出側速度−ルーパ入側速度 α:ルーパロール加減速率 図1に示されるように、通常ライン運転中(中央セクシ
ョンの速度と入側セクション及び出側セクションの速度
とが同期している間)は、ルーパロール2aはルーパロ
ール同期位置PS1に設定されている。以下、ルーパロー
ル同期位置切替えについて説明する。先ず、(1)式に
より、ルーパロール2aの切替え時にルーパ装置2に蓄
積される鋼板長さ(ルーパロール同期位置切り替え時の
鋼板蓄積長さ)l1を求める。次いで、(2)式、
(3)式により、ルーパロール同期位置切り替え時から
の入側鋼板払い出し長さl2を求める。そして、l1とl
2との和から必要ルーパ入側残長を求め、ルーパ入側残
長が必要ルーパ入側残長以下になったときに、時刻T1
から時刻T2にかけてルーパロール同期位置をPS1から
S2に切り替える。さらに、時刻T3 において、ルーパ
入側を停止させるために減速が開始される。さらに、本
願発明では、ルーパロール同期位置がPS1からPS2に切
り替わる時刻T1から時刻T2において、ルーパ出側セク
ションの速度を監視し、この速度に基づいて、ルーパ入
側セクションと出側セクションの速度の差が一定になる
ように、ルーパ入側セクションの速度を決定している。
すなわち、ルーパロール同期位置切替え中に、ルーパ出
側セクションの速度がΔVだけ増加した場合は、ルーパ
入側セクション速度も同様に過度的にΔV増加させて速
度VE で鋼板10を通板させる。これにより、ルーパ入
側速度とルーパ出側速度との差を常に一定にすることが
できるため、ルーパ2に蓄積される鋼板の長さも常に一
定となる。従って、ルーパ出側セクションの速度が変動
した場合でも、一定時間内にルーパロール同期位置切替
えを完了することができる。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a looper device 2 which is an embodiment according to a looper roll control method according to the present invention, and FIG. 2 is a timing chart showing switching between the entrance section speed of the looper device 2 and the looper roll position. Control is performed based on equations (1) to (3). l 1 = L H -L L = 1 / V E · (2t 1- (2 V E / α)) (1) t 1 = (L H -L L ) / V E + V E / α (2) l 2 = V E · t 1 + V E 2 / 2α (3) l 1 : accumulation length of steel sheet at the time of switching the looper roll synchronous position t 1 : time required at the time of switching the looper roll synchronous position l 2 : from the time of switching the looper roll synchronous position of the ingress steel payout length L H: length end synchronization position of the looper L L: looper short end synchronization position V E: looper exit-side speed - looper inlet-side velocity alpha: as shown in looper roll acceleration and deceleration rates Figure 1, During normal line operation (while the speed of the center section is synchronized with the speeds of the entry section and the exit section), the looper roll 2a is set to the looper roll synchronization position PS1 . Hereinafter, the looper roll synchronous position switching will be described. First, (1) by equation steel sheet length stored in the looper device 2 at the time of switching the looper roll 2a (looper roll synchronous position steel accumulation length of time of switching) Request l 1. Then, equation (2),
(3) by equation obtains the input side steel payout length l 2 from the time looper roll synchronization position switch. And l 1 and l
The required looper entry-side remaining length is calculated from the sum of 2 and when the looper entry-side remaining length falls below the required looper entry-side remaining length, time T 1
Switch to P S2 of the looper roll synchronization position toward time T 2, from the P S1. Further, at time T 3, the deceleration is initiated to stop the looper entry side. Furthermore, in the present invention, at time T 2, from time T 1 to looper roll synchronization position is switched from P S1 to P S2, monitors the speed of the looper exit-side section, on the basis of this speed, the looper entrance-side section and the exit-side section The speed of the looper entrance section is determined so that the speed difference between the loopers becomes constant.
That is, while switching looper roll synchronization position, if the speed of the looper exit-side section increases by [Delta] V, thereby Tsuban the steel sheet 10 at a speed V E and looper inlet side section rate likewise transiently increased [Delta] V. As a result, the difference between the looper entrance side speed and the looper exit side speed can always be kept constant, so that the length of the steel plate accumulated in the looper 2 is always kept constant. Therefore, even when the speed of the looper exit side section changes, the looper roll synchronous position switching can be completed within a certain time.

【0006】[0006]

【発明の効果】以上説明したように、本発明によれば、
ルーパ入側、出側の鋼板の通板速度の差を一定にしてい
るので、ルーパ出側セクションの速度が変動した場合で
も、ルーパに蓄積される鋼板の長さを一定にすることが
できる。従って、ルーパロール同期位置切替え一定時間
内に完了することができる。
As described above, according to the present invention,
Since the difference between the passing speeds of the steel sheet on the looper entrance side and the exit side is kept constant, the length of the steel sheet accumulated in the looper can be kept constant even when the speed of the looper exit section changes. Therefore, the looper roll synchronous position switching can be completed within a fixed time.

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

【図1】本発明に係るルーパロール制御方法による実施
の形態であるルーパ装置の概略構成図である。
FIG. 1 is a schematic configuration diagram of a looper device which is an embodiment according to a looper roll control method according to the present invention.

【図2】ルーパ装置の入側セクション速度とルーパロー
ル位置の切替えを示すタイミングチャートルーパであ
る。
FIG. 2 is a timing chart looper showing switching between an entrance section speed and a looper roll position of a looper device.

【図3】従来のルーパ装置の概略構成図である。FIG. 3 is a schematic configuration diagram of a conventional looper device.

【符号の説明】[Explanation of symbols]

2 ルーパ装置 2a ルーパロール PS1、PS2 ルーパロール同期位置2 Looper device 2a Looper roll P S1 , P S2 Looper roll synchronous position

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 鋼板処理ラインにおける鋼板蓄積用ルー
パのルーパロール同期位置を切替えるルーパロール制御
方法において、 ルーパロール同期位置切替え中に、 ルーパ出側セクションの鋼板の速度を監視し、 この速度に基づいて、ルーパ入側セクションと出側セク
ションの速度の差が一定になるように、前記ルーパ入側
セクションの速度を決定することを特徴とするルーパロ
ール制御方法。
1. A looper roll control method for switching a looper roll synchronous position of a steel sheet accumulating looper in a steel sheet processing line, wherein during the looper roll synchronous position switching, a speed of a steel sheet in a looper exit section is monitored, and based on the speed, the looper is controlled. A looper roll control method, wherein the speed of the looper inlet section is determined so that the difference in speed between the inlet section and the outlet section is constant.
【請求項2】 さらに、前記ルーパ入側セクションの減
速開始前に、前記ルーパロール同期位置を切り替えるこ
とを含む請求項1記載のルーパロール制御方法。
2. The looper roll control method according to claim 1, further comprising switching the looper roll synchronous position before starting to decelerate the looper entry section.
JP29556197A 1997-10-28 1997-10-28 Looper roll control method Expired - Fee Related JP3722179B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29556197A JP3722179B2 (en) 1997-10-28 1997-10-28 Looper roll control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29556197A JP3722179B2 (en) 1997-10-28 1997-10-28 Looper roll control method

Publications (2)

Publication Number Publication Date
JPH11129029A true JPH11129029A (en) 1999-05-18
JP3722179B2 JP3722179B2 (en) 2005-11-30

Family

ID=17822244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29556197A Expired - Fee Related JP3722179B2 (en) 1997-10-28 1997-10-28 Looper roll control method

Country Status (1)

Country Link
JP (1) JP3722179B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113751516A (en) * 2020-06-05 2021-12-07 上海梅山钢铁股份有限公司 Method for rapidly threading inlet loop

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113751516A (en) * 2020-06-05 2021-12-07 上海梅山钢铁股份有限公司 Method for rapidly threading inlet loop

Also Published As

Publication number Publication date
JP3722179B2 (en) 2005-11-30

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