JPH0989545A - Device for measuring length of plate of slitter line - Google Patents

Device for measuring length of plate of slitter line

Info

Publication number
JPH0989545A
JPH0989545A JP24892095A JP24892095A JPH0989545A JP H0989545 A JPH0989545 A JP H0989545A JP 24892095 A JP24892095 A JP 24892095A JP 24892095 A JP24892095 A JP 24892095A JP H0989545 A JPH0989545 A JP H0989545A
Authority
JP
Japan
Prior art keywords
roll
analog
plate
roll diameter
steel plate
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
JP24892095A
Other languages
Japanese (ja)
Inventor
Tomohide Abe
智秀 阿部
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP24892095A priority Critical patent/JPH0989545A/en
Publication of JPH0989545A publication Critical patent/JPH0989545A/en
Pending legal-status Critical Current

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  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for holding length measurement data using an auxiliary power supply during power interruption. SOLUTION: An analog computing circuit which sets the initial diameter D0 of a roll on which the steel plate of a slitter line is wound, before the steel plate is drawn out, sets the plate thickness θ, and detects the current roll diameter D while the steel plate is being drawn out of the roll, and which consists of amplifiers 1, 4 with a gain of -√π, a squaring multiplier 2, pentapole inverted amplifiers 3, 6 and a divider 7 to perform the operation of (D0 <2> -D<2> )π/ϕ, detects the overall length of the steel plate drawn out of the roll. Since this measuring device is of an analog type, even in the event of a power failure the overall length data is immediately output from the computing circuit on power restoration. Since the slitter line does not require the overall length data during power interruption, the length measuring device can be said to be of an outage-guaranteed type that operates by restoring power.

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、停電時に測長デー
タを予備電源などで保持する必要のない、アナログ方式
のスリッタラインの板材の測長装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an analog slitter line plate length measuring device which does not require holding of length measurement data by a standby power source or the like in the event of a power failure.

【0002】[0002]

【従来の技術】現在、スリッタラインのロールから巻き
出した鉄板の測長には、鉄板を駆動する駆動電動機のパ
ルスピックアップ等からの制御用のフィードバック信
号、即ち、ディジタルデータを用いた測長装置を使用し
ている。この方式によれば、1回転中、どのくらい回転
したかが演算でき、高精度に鉄板の測長が可能となる。
2. Description of the Related Art At present, for measuring the length of an iron plate unrolled from a slitter line roll, a length measuring device using a feedback signal for control from a pulse pickup of a driving motor for driving the iron plate, that is, digital data is used. Are using. According to this method, it is possible to calculate how much rotation has been performed during one rotation, and it is possible to measure the length of the iron plate with high accuracy.

【0003】[0003]

【発明が解決しようとする課題】ところで、上記測長装
置はデータをディジタル処理をしているので、停電時に
カウンタ等を予備電源などでデータが消えないように保
持しておく必要がある。
By the way, since the length measuring device digitally processes the data, it is necessary to hold a counter or the like by a standby power source so that the data will not be lost when a power failure occurs.

【0004】また、既存のスリッタライン設備をリプレ
ースする場合、駆動電動機は既存のものの性能のままで
良いために、駆動電動機を更新することをしないことが
ある。この駆動電動機制御用のフィードバック信号には
アナログの直流電圧を出力する発電機が使用されている
ので、駆動電動機がどのくらい回転したからという詳細
なデータが得られず、上記ディジタル方式の測長装置は
を使えないという問題がある。
When replacing the existing slitter line equipment, the drive motor may not be updated because the drive motor may have the same performance as the existing one. Since a generator that outputs an analog DC voltage is used for the feedback signal for controlling the drive motor, detailed data on how much the drive motor has rotated cannot be obtained. There is a problem that you cannot use.

【0005】本発明は、従来のこのような問題点を解決
すべくなされたものであり、その目的とするところは、
停電時に測長データを予備電源などで保持する必要のな
い、アナログ方式のスリッタラインの板材の測長装置を
提供することにある。
The present invention has been made to solve the above-mentioned conventional problems, and the purpose thereof is to:
An object of the present invention is to provide an analog slitter line plate length measuring device that does not need to hold length measurement data by a standby power source or the like in the event of a power failure.

【0006】[0006]

【課題を解決するための手段】本発明のスリッタライン
の材料の測長装置は、スリッタラインの板材が巻かれた
ロールの板材を巻き出す前の初期ロール径を設定するア
ナログ初期ロール径設定器と、板材の板厚を設定するア
ナログ板厚設定器と、ロールから鉄板を巻き出している
ときの現在ロール径を検出するアナログロール径検出器
と、初期ロール径設定器からの初期ロール径D0と板厚
設定器からの板厚γ及びロール径検出器からの現在ロー
ル径Dから巻き出した板材の全長を(D0 2−D2)π/
γの演算で求めるアナログ演算回路で構成した。
SUMMARY OF THE INVENTION A slitter line material length measuring device according to the present invention is an analog initial roll diameter setting device for setting an initial roll diameter before unwinding a roll of a roll on which a slitter line plate is wound. , An analog plate thickness setting device that sets the plate thickness of the plate material, an analog roll diameter detector that detects the current roll diameter when the iron plate is being unwound from the roll, and an initial roll diameter D from the initial roll diameter setting device. 0 , the plate thickness γ from the plate thickness setting device, and the total length of the plate material unwound from the current roll diameter D from the roll diameter detector is (D 0 2 −D 2 ) π /
It is composed of an analog arithmetic circuit obtained by calculating γ.

【0007】[0007]

【発明の実施の形態】通常、スリッタラインのアンコイ
ラの周辺設備として、ロール径検出器が設置されてお
り、この検出器の信号を使って、ロール径が大きけれ
ば、ゆっくりアンコイラの電動機を回転させ、ロール径
が小さければ速く回転するように演算して、アンコイラ
の電動機の速度指令を与えている。
BEST MODE FOR CARRYING OUT THE INVENTION Usually, a roll diameter detector is installed as peripheral equipment of an uncoiler in a slitter line, and if the roll diameter is large, the motor of the uncoiler is slowly rotated by using the signal of this detector. , If the roll diameter is small, it is calculated to rotate faster, and the speed command of the uncoiler electric motor is given.

【0008】本発明は、このロール径検出器の検出精度
の良いものを使用することにより、ロールから巻き出さ
れた鉄板の全長をアナログ演算により検出するものであ
る。
The present invention detects the total length of the iron plate unwound from the roll by analog calculation by using a roll diameter detector having a high detection accuracy.

【0009】まず、図1を参照して測長の演算式につい
て説明する。D0はロールAから鉄板を巻き出す前の初
期ロール半径、DはロールAから鉄板を巻き出している
ときの現在ロール半径、γは鉄板の板厚を示す。初期ロ
ール直径2D0から現在ロール直径2Dへ鉄板を巻き出
した時、図1のxの中間点がロールの径とみなすことが
できる(理由は後述)。図1のRを2D0から2Dへ巻
き出した時の仮想のロール半径とすると、
First, an arithmetic expression for length measurement will be described with reference to FIG. D 0 is the initial roll radius before unrolling the iron plate from roll A, D is the current roll radius when unrolling the iron plate from roll A, and γ is the plate thickness of the iron plate. When the iron plate is unwound from the initial roll diameter 2D 0 to the current roll diameter 2D, the midpoint of x in FIG. 1 can be regarded as the roll diameter (the reason will be described later). When R in FIG. 1 is a virtual roll radius when unrolled from 2D 0 to 2D,

【0010】[0010]

【数1】 [Equation 1]

【0011】その時のコイル円周の長さは、The length of the coil circumference at that time is

【0012】[0012]

【数2】 円周の長さ=2πR=π(D0+D) …(2) 2D0から2Dへ巻き出した時の回転量は、[Number 2] circumferential length = 2πR = π (D 0 + D) ... (2) rotation amount when unwound from 2D 0 to 2D are

【0013】[0013]

【数3】 (Equation 3)

【0014】2D0から2Dへ巻き出した時の全長は、The total length when unrolled from 2D 0 to 2D is

【0015】[0015]

【数4】 [Equation 4]

【0016】となる。この(4)式を用いて全長を演算
する。演算に必要な板厚γ、初期ロール半径D0は、回
転式設定数字表示(例えば、3桁)付きの手動可変抵抗
器で精密に設定できるものを使用する。
[0016] The total length is calculated using this equation (4). The plate thickness γ and the initial roll radius D 0 required for the calculation are those which can be precisely set by a manual variable resistor with a rotary setting numeral display (for example, 3 digits).

【0017】図2は上記(4)式を演算するアナログ演
算回路の1例を示すものである。1は初期ロール半径設
定用可変抵抗器で設定された信号−D0を増幅するゲイ
ン−√πのアンプ、2はアンプ1からの信号を自乗して
πD0 2の信号をうる乗算器、3は乗算器2からの信号の
極性を変えるゲイン−1のアンプ、4はロール径検出器
で検出された現在ロール径の信号Dを増幅するゲイン−
√πのアンプ、5はアンプ4からの信号を自乗してπD
2の信号をうる乗算器、6はアンプ3を乗算器5からの
信号の差を増幅するゲイン−1のアンプ、7はアンプ6
からの信号π(D0 2−D2)を板厚設定用可変抵抗器で
設定された信号γで除算して求める全長(D0 2−D2
π/γの信号を出力するアナログ除算器である。
FIG. 2 shows an example of an analog arithmetic circuit for calculating the above equation (4). 1 is an amplifier with a gain of −√π that amplifies the signal −D 0 set by the variable resistor for setting the initial roll radius, 2 is a multiplier that squares the signal from the amplifier 1 to obtain a signal of πD 0 2 , 3 Is a gain-1 amplifier for changing the polarity of the signal from the multiplier 2, and 4 is a gain-amplifying the current roll diameter signal D detected by the roll diameter detector.
√π amplifier, 5 squares the signal from amplifier 4 and πD
2 is a multiplier for obtaining a signal, 6 is an amplifier having a gain of -1, which amplifies the difference between signals from the multiplier 5, and 7 is an amplifier 6
The total length (D 0 2 -D 2 ) obtained by dividing the signal π (D 0 2 -D 2 ) from the product by the signal γ set by the plate thickness setting variable resistor.
It is an analog divider that outputs a π / γ signal.

【0018】以上のように構成されているので、可変抵
抗器でD0,γを設定し、ロール径検出器からのDを取
り込むことにより、ロールから引き出した鉄板の全長を
検出することができる。
With the above construction, the total length of the iron plate pulled out from the roll can be detected by setting D 0 and γ with the variable resistor and taking in D from the roll diameter detector. .

【0019】なお、アナログ演算回路は(4)式を演算
できるものであればよく、図2の回路に限定されるもの
ではない。また、測長対象物も鉄板に限定されるもので
ない。
The analog arithmetic circuit is not limited to the circuit shown in FIG. 2 as long as it can calculate the equation (4). The object to be measured is not limited to the iron plate.

【0020】上記Rがロールの半径と見做ことができる
理由を説明する。本来は、ロール1回転毎の鉄板の長さ
の総和はロール直径の2D0から2Dへ巻き出した時の
長さとなる。
The reason why R can be regarded as the radius of the roll will be described. Originally, the total length of the iron plate per one rotation of the roll is the length when unrolled from the roll diameter of 2D 0 to 2D.

【0021】例えば、n回転した時のロール半径は、For example, the roll radius when rotating n times is

【0022】[0022]

【数5】 Rn=D0−γn …(5) となり、直径が2D0から2Dになったときに回転した
ならば、それまで巻き出した鉄板の長さは、
Equation 5] Rn = D 0 -γ n ... ( 5) next, if the diameter is rotated when it becomes the 2D 0 to 2D, the length of the iron plate unrolled before,

【0023】[0023]

【数6】 (Equation 6)

【0024】(6)式より、直径D0とDの中間点が仮
想のロール半径と見なすことができる。
From the equation (6), the midpoint between the diameters D 0 and D can be regarded as the virtual roll radius.

【0025】[0025]

【発明の効果】本発明は、上述のとおり構成されている
ので、次に記載する効果を奏する。
Since the present invention is configured as described above, it has the following effects.

【0026】(1)スリッタラインに設置されているア
ナログ電圧を出力するロール径検出器を利用することが
できる。
(1) A roll diameter detector installed on the slitter line for outputting an analog voltage can be used.

【0027】(2)ロール径検出器とアナログ演算回路
で構成されているので、ディジタル回路のように停電時
にカウンタデータを保持する必要がない。
(2) Since it is composed of the roll diameter detector and the analog operation circuit, it is not necessary to hold the counter data at the time of power failure unlike the digital circuit.

【0028】(3)鉄板の測長値をディジタルで表示す
る場合、測長はアナログで行っているので、表示機器の
み予備電源で保持しておけばよい。
(3) When the length measurement value of the iron plate is digitally displayed, since the length measurement is performed in analog, only the display device needs to be held by the standby power supply.

【0029】(4)アナログによる測長方式であるの
で、停電しても復電するとロール径を検出して演算で測
長値が出力する。したがって復電で動作する停電保障を
有するシステムといえる。
(4) Since the length measurement system is analog, when the power is restored even after a power failure, the roll diameter is detected and the length measurement value is output by calculation. Therefore, it can be said that the system has a power failure guarantee that operates on power recovery.

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

【図1】ロールの寸法説明図。FIG. 1 is an explanatory diagram of roll dimensions.

【図2】実施の態様にかかるアナログ演算回路例を示す
ブロック図。
FIG. 2 is a block diagram showing an example of an analog arithmetic circuit according to an embodiment.

【符号の説明】[Explanation of symbols]

A…ロール D0…初期ロール半径 D…現在ロール半径 γ…鉄板の板厚 R…仮想ロール半径 1,4…ゲイン−√πのアンプ 2,5…自乗乗算器 3…極性反転用アンプ 6…減算器 7…除算器。A ... Roll D 0 ... Initial roll radius D ... Current roll radius γ ... Iron plate thickness R ... Virtual roll radius 1, 4 ... Gain-√π amplifier 2, 5 ... Square multiplier 3 ... Polarity inversion amplifier 6 ... Subtractor 7 ... Divider.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 スリッタラインの板材が巻かれたロール
の板材を巻き出す前の初期ロール径を設定するアナログ
初期ロール径設定器と、 板材の板厚を設定するアナログ板厚設定器と、 ロールから鉄板を巻き出しているときの現在ロール径を
検出するアナログロール径検出器と、 初期ロール径設定器からの初期ロール径と板厚設定器か
らの板厚及びロール径検出器からの現在ロール径から巻
き出した板材の全長を演算するアナログ演算回路とから
なることを特徴としたスリッタラインの板材の測長装
置。
1. An analog initial roll diameter setting device for setting an initial roll diameter before unwinding a plate material of a roll on which a slitter line plate material is wound, an analog plate thickness setting device for setting a plate thickness of the plate material, and a roll. Analog roll diameter detector that detects the current roll diameter when the steel plate is being unwound from the roll, and the initial roll diameter from the initial roll diameter setter, the thickness from the thickness setter, and the current roll from the roll diameter detector. A slitter line plate length measuring device comprising an analog calculation circuit for calculating the total length of a plate rolled out from the diameter.
JP24892095A 1995-09-27 1995-09-27 Device for measuring length of plate of slitter line Pending JPH0989545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24892095A JPH0989545A (en) 1995-09-27 1995-09-27 Device for measuring length of plate of slitter line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24892095A JPH0989545A (en) 1995-09-27 1995-09-27 Device for measuring length of plate of slitter line

Publications (1)

Publication Number Publication Date
JPH0989545A true JPH0989545A (en) 1997-04-04

Family

ID=17185392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24892095A Pending JPH0989545A (en) 1995-09-27 1995-09-27 Device for measuring length of plate of slitter line

Country Status (1)

Country Link
JP (1) JPH0989545A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140115672A (en) * 2013-03-21 2014-10-01 삼성에스디아이 주식회사 A device for measuring a length of electrode plate
CN104477687A (en) * 2014-11-26 2015-04-01 攀钢集团攀枝花钢钒有限公司 Method for inhibiting continuous hot-dip galvanizing and aluminizing unit coiling overflow edge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140115672A (en) * 2013-03-21 2014-10-01 삼성에스디아이 주식회사 A device for measuring a length of electrode plate
US9476702B2 (en) 2013-03-21 2016-10-25 Samsung Sdi Co., Ltd. Device for measuring length of electrode plate
CN104477687A (en) * 2014-11-26 2015-04-01 攀钢集团攀枝花钢钒有限公司 Method for inhibiting continuous hot-dip galvanizing and aluminizing unit coiling overflow edge

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