JPS6128804A - Detecting method of diameter of coil - Google Patents

Detecting method of diameter of coil

Info

Publication number
JPS6128804A
JPS6128804A JP14764884A JP14764884A JPS6128804A JP S6128804 A JPS6128804 A JP S6128804A JP 14764884 A JP14764884 A JP 14764884A JP 14764884 A JP14764884 A JP 14764884A JP S6128804 A JPS6128804 A JP S6128804A
Authority
JP
Japan
Prior art keywords
coil
diameter
coil diameter
distance detector
unit
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
JP14764884A
Other languages
Japanese (ja)
Inventor
Tadao Nakayama
忠雄 中山
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP14764884A priority Critical patent/JPS6128804A/en
Publication of JPS6128804A publication Critical patent/JPS6128804A/en
Pending legal-status Critical Current

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  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

PURPOSE:To enable the detection of the diameter of a coil even when it is large, by a method wherein the diameter of the coil is detected by a non-contact type distance detector made to face the coil and it is compensated by a value obtained by sampling the output of the distance detector by means of a pulse generator which takes out the number of revolution of a reel. CONSTITUTION:A drive motor 3 axially coupled to a pulse generator 4 which inputs a pulse P1 to a counter 5 is provided, while a pulse generator 7 which inputs a pulse P2 to a counter 8 is coupled axially to a deflector roll 6. Moreover, a non-contact type distance detector 9 is supported opposite to a coil 2 by a detection driving unit 10 which is reciprocated straight by a position controlling unit 11. The outputs N1 and N2 from the counters 5 and 8 are received by a coil-diameter computing unit 13, while the position of a drive shaft 10A is controlled by the unit 11, and the outputs of a detected coil diameter computing unit 14 and the unit 13 are received by a coil-diameter compensating unit 16, whereby a coil diameter signal is generated. By this method, the diameter of the coil 2 can be detected with high precision.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は、圧延ライン等におけるテンションリール上
の変化するコイル径を非接触で検出する方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for non-contact detecting a changing coil diameter on a tension reel in a rolling line or the like.

〔従来技術〕[Prior art]

張力制御を行う圧延ラインでは、テンションリールのコ
イル径の変化に従ってリール駆動電動機のトルクを変化
させる必要があので、コイル径を□正確に検出しなくて
はならい。
In a rolling line that performs tension control, it is necessary to change the torque of the reel drive motor according to changes in the coil diameter of the tension reel, so the coil diameter must be detected accurately.

このコイル径の検出方法としては、タッチロールを用い
て直接検出する方法が簡単であるが、該方法による場合
は圧延材表面に接触痕や圧痕が生じ品質・歩留りが低下
すると云う欠点がある。渦電流型の距離検出器を用いれ
ば非接触でコイル径を検出することができるので上記の
ような欠点を無くすことができるが、該距離検出器は磁
気を利用するものである為に測定可能範囲が小さので、
大型コイルとなる場合には実用できないと云う問題があ
る。
A simple method for detecting the coil diameter is to directly detect it using a touch roll, but this method has the disadvantage that contact marks and impressions are formed on the surface of the rolled material, resulting in a decrease in quality and yield. If an eddy current type distance detector is used, the coil diameter can be detected without contact, which eliminates the above disadvantages, but since the distance detector uses magnetism, it can be measured. Since the range is small,
There is a problem in that it cannot be put to practical use in the case of large coils.

更に、近年、デフレクタ−ロールを利用してストリップ
速度とリール回転数から演算によりコイル径を検出する
方法が開発されているが、ロールスリップ等によるスト
リップ速度の検出誤差がコイル径検出精度を低下させる
と云う欠点があった。
Furthermore, in recent years, a method has been developed to detect the coil diameter by calculating the stripping speed and reel rotation speed using a deflector roll, but detection errors in the stripping speed due to roll slip etc. reduce the accuracy of coil diameter detection. There was a drawback.

〔発明の目的と構成〕[Purpose and structure of the invention]

本発明は、上記した欠点を除去する為になされたもので
、テンションリールの回転数とストリップ速度から該テ
ンションリール上のコイルのコイル径を演算して出力す
るコイル径演算装置によりコイル径検出する場合におい
て、テンションリール上のコイルに対し該コイル半径方
向移動可能に非接触式距離検出器を対向配置して該非接
触式距離検出器を演算により求めたコイル径の値を位置
基準として位置制御し、他方、上記テンションリールの
回転数を取出すパルス発生器の出力パルス数が所定値に
達する毎に上記非接触式距離検出器の出力をサンプリン
グして該サンプリン値により、上記演算により求めたコ
イル径の値を補正する構成とすることにより、大径コイ
ルであっても検出可能で、従来に比して高精度にコイル
径を検出することができるコイル径の検出方法を提供す
ることを目的とする。
The present invention has been made to eliminate the above-mentioned drawbacks, and detects the coil diameter using a coil diameter calculation device that calculates and outputs the coil diameter of the coil on the tension reel from the rotation speed and stripping speed of the tension reel. In this case, a non-contact distance detector is arranged opposite to the coil on the tension reel so as to be movable in the radial direction of the coil, and the position of the non-contact distance detector is controlled using the value of the coil diameter determined by calculation as a position reference. , On the other hand, every time the output pulse number of the pulse generator that extracts the rotation speed of the tension reel reaches a predetermined value, the output of the non-contact distance detector is sampled, and the coil diameter determined by the above calculation is determined based on the sampled value. The purpose of this invention is to provide a coil diameter detection method that can detect even large-diameter coils by correcting the value of do.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の一実施例を図面を参照して説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

図において、1は圧延ラインのテンションリール(巻戻
し側、リール径:dl)、2はこのリールに巻回された
圧延材のコイル(最大コイル径:Rmax)、3はリー
ル駆動モータであって、図示しない速度制御装置により
トルク一定に制御されている。4はリール駆動モータ3
に軸結されたパルス発生器であって、その出力パルスP
1は計数器5に入力される。計数器5はテンションリー
ル1の回転数N1を出力する他、テンションリール1の
1回転毎にパルスを発生すると共に1回転当たりのパル
ス数nを送出する。6はデフレクタロールロール径:d
2)、7はこのデフレクタロールに軸結されたパルス発
生器であって、その出力パルスP2は計数器8に入力さ
れる。9は非接触式距離検出器であって、検出器駆動装
置10の駆動軸に支持されてコイル2の表面に対向して
おり、該表面に対する対向間距離gに比例するコイル径
検出信号f (r)を発生する。検出器駆動装置10は
直線往復動装置であって、位置制御装置11が出力する
駆動信号を受けて該駆動信号の大きさに対応する変位量
だけ距離検出器9をコイル2の半径方向に駆動する。
In the figure, 1 is the tension reel of the rolling line (unwinding side, reel diameter: dl), 2 is the coil of the rolled material wound on this reel (maximum coil diameter: Rmax), and 3 is the reel drive motor. The torque is controlled to be constant by a speed control device (not shown). 4 is reel drive motor 3
a pulse generator, the output pulse P of which is
1 is input to the counter 5. The counter 5 not only outputs the number of revolutions N1 of the tension reel 1, but also generates a pulse every time the tension reel 1 rotates, and also sends out the number of pulses n per revolution. 6 is deflector roll roll diameter: d
2), 7 is a pulse generator connected to the deflector roll, and its output pulse P2 is input to a counter 8. Reference numeral 9 denotes a non-contact distance detector, which is supported by the drive shaft of the detector drive device 10 and faces the surface of the coil 2, and outputs a coil diameter detection signal f ( r). The detector drive device 10 is a linear reciprocating device that receives a drive signal output from the position control device 11 and drives the distance detector 9 in the radial direction of the coil 2 by a displacement amount corresponding to the magnitude of the drive signal. do.

この検出器駆動装置10には位置検出器12が接続され
ており、該位置検出器12は駆動軸10Aの基準位置(
距離検出器9の先端位置)からの正逆移動量Xに比例し
た検出器位置信号r (x)を発生する。13はコイル
径演算装置であって、計数器5の出力(回転数)Nlと
計数器8の出力(回転数)N2を受け、下記式に基づき
コイル径R(t)を演算してコイル径演算信号R(t)
を出力する。
A position detector 12 is connected to this detector drive device 10, and the position detector 12 is located at a reference position (
A detector position signal r (x) proportional to the amount of forward/reverse movement X from the tip position of the distance detector 9 is generated. 13 is a coil diameter calculation device which receives the output (rotation speed) Nl of the counter 5 and the output (rotation speed) N2 of the counter 8, calculates the coil diameter R(t) based on the following formula, and calculates the coil diameter. Calculated signal R(t)
Output.

R(tl =π・V/N1・・・・・・・・・(1)V
=N2・π・d・・・・・・・・・(2)このコイル径
演算装置13が出力するコイル径演算信号R(tlは位
置基準信号として位置検出器12が出力する検出器位置
信号f fX)と比較され両者の偏差εが位置制御装置
11に入力され、位置制御装置11は該偏差εが零にな
るように検出器駆動装置10の駆動軸10Aの位置を制
御する。
R(tl = π・V/N1・・・・・・・・・(1)V
=N2・π・d (2) Coil diameter calculation signal R output by this coil diameter calculation device 13 (tl is a detector position signal output by the position detector 12 as a position reference signal f fX), and the deviation ε between the two is input to the position control device 11, and the position control device 11 controls the position of the drive shaft 10A of the detector drive device 10 so that the deviation ε becomes zero.

14は検出コイル径演算装置であって、距離検出器9が
出力するコイル径検出信号f (r)をサンプリングし
てサンプリング値を系の安定性を得るため所定周期で平
均した値をコイル径補正信号−f (r)として出力す
る。このサンプリング時点tは測定条件設定器15によ
って決定され、該測定条件設定器15は計数器5が出力
するテンションリール1回転毎のパルス毎にサンプリン
グ指令Sを送出する。16はコイル径補正装置であって
、コイル径演算装置13の出力R(t)と検出コイル径
演算装置14の出力f (r)を同時に読出して下記式
の演算を行い、補正されたコイル径信号Rを発生する。
14 is a detection coil diameter calculating device which samples the coil diameter detection signal f (r) outputted by the distance detector 9 and averages the sampled value at a predetermined period to obtain system stability and corrects the coil diameter. Output as signal -f (r). This sampling time point t is determined by the measurement condition setting device 15, and the measurement condition setting device 15 sends out a sampling command S for each pulse output by the counter 5 for each rotation of the tension reel. 16 is a coil diameter correction device which simultaneously reads out the output R(t) of the coil diameter calculation device 13 and the output f(r) of the detected coil diameter calculation device 14, calculates the following formula, and calculates the corrected coil diameter. Generates signal R.

R=R(G+f(r)−−・−−・−・・−・=(3)
この読出しタイミングは条件設定器15により決定され
、該条件設定器15はと前記1回転当たりのパルス数n
から得られる回転角度と予め設定されている圧延条件か
ら上記タイミング、図のB点がA点に達した時点を決定
して出力旦を出す。
R=R(G+f(r)−−・−−・−・・−・=(3)
This readout timing is determined by a condition setter 15, and the condition setter 15 includes the number of pulses per rotation n.
From the rotation angle obtained from the rotation angle and the preset rolling conditions, the above timing, the point when point B reaches point A in the figure, is determined and the output date is determined.

この構成においては、コイル2の巻戻しが進み、コイル
径がΔRだけ減少すると、位置制御装置11に、 ε= R(t) −f (x)・・・・・・・・・・(
4)が入力され、検出器駆動装置lOは偏差εをOとす
る方向に距離検出器9をΔXだけ変位させる。
In this configuration, when the unwinding of the coil 2 progresses and the coil diameter decreases by ΔR, the position control device 11 receives the following information: ε= R(t) −f (x) (
4) is input, and the detector driving device lO displaces the distance detector 9 by ΔX in the direction that makes the deviation ε O.

ストリップとデフレクタロール6間にスリップがない場
合には、距離検出器9のコイル径検出信号f (r)従
ってコイル径補正信号1辺はコイル径演算装置13のコ
イル径演算信号R(t)に等しくなるが、上記スリップ
があると、f (r)キR(t)、となるので、コイル
径補正装置16は両者の差分を演算してコイル径演算値
R(t)を補正し、正確なコイル径補正信号Rを出力す
る。
When there is no slip between the strip and the deflector roll 6, the coil diameter detection signal f(r) of the distance detector 9 is the same as the coil diameter correction signal 1 side of the coil diameter calculation signal R(t) of the coil diameter calculation device 13. However, if there is the above-mentioned slip, f(r)×R(t), so the coil diameter correction device 16 calculates the difference between the two and corrects the calculated coil diameter value R(t), thereby making it accurate. A coil diameter correction signal R is output.

上記実施例では、巻戻し側のテンションリール上のコイ
ルにってい説明したが、巻取り側のテンションリールの
場合についても同様である。
Although the above embodiment has been described with reference to the coil on the tension reel on the unwinding side, the same applies to the tension reel on the winding side.

〔発明の効果〕〔Effect of the invention〕

本発明は以上説明した通り、非接触式距離検出器をコイ
ルに対しコイル半径方向変位可能に対向配置して該距離
検出器を演算により求めたコイル径を位置基準信号とし
て位置制御しつつ動作させ、上記距離検出器の出力を用
いて上記演算により求めたコイル径を補正する構成とし
たことにより、上記演算によるコイル径に前記したロー
ルスリップ等に起因する検出誤差があっても、正確な値
のコイル径に修正することができるので、該コイル径を
用いて張力制御を行えば従来に比して精度を高ることが
できる他、距離検出器はコイル径の変化に追随して変位
するのでコイル径が大なる場合でも実用することができ
、しかもコイル径の検出は比接触で行われるので、品質
や歩留りの低下を招く危険は全くない。
As explained above, in the present invention, a non-contact distance detector is arranged opposite to a coil so as to be displaceable in the radial direction of the coil, and the distance detector is operated while controlling the position using the calculated coil diameter as a position reference signal. By using the output of the distance detector to correct the coil diameter determined by the above calculation, even if there is a detection error due to the roll slip etc. mentioned above in the coil diameter calculated by the above calculation, an accurate value can be obtained. Since the coil diameter can be corrected to , if tension control is performed using the coil diameter, accuracy can be increased compared to conventional methods, and the distance detector will be displaced to follow changes in the coil diameter. Therefore, it can be put to practical use even when the coil diameter is large, and since the coil diameter is detected by specific contact, there is no risk of deterioration in quality or yield.

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

図は本発明の一実施を示すブロック図である。 1−テンションリール、2−コイル、3−リール駆動装
置、4.7−・−パルス発生器、5.8−針数器、6−
テンションリール、9−非接触式距離検出器、10−・
−検出器駆動装置、11−位置制御装置、12位置検出
器、13−・イル径演算装置         (,1
4−検出コイル径演算装置、15−条件設定器、16−
・−コイルi補正装置。
The figure is a block diagram showing one implementation of the invention. 1-Tension reel, 2-Coil, 3-Reel drive device, 4.7--Pulse generator, 5.8-Stitch counter, 6-
Tension reel, 9-non-contact distance detector, 10-.
-Detector drive device, 11-Position control device, 12-Position detector, 13-・Ile diameter calculation device (,1
4-detection coil diameter calculation device, 15-condition setting device, 16-
-Coil i correction device.

Claims (1)

【特許請求の範囲】[Claims] (1)テンションリールの回転数と、デフレクタロール
を介して検出したストリップ速度から該テンションリー
ル上のコイルのコイル径を演算して出力するコイル径演
算装置によりコイル径を検出する場合において、テンシ
ョンリール上のコイルに対し該コイル半径方向移動可能
に非接触式距離検出器を対向配置して該非接触式距離検
出器を上記コイル径演算装置が出力するコイル径信号を
位置基準信号として位置制御し、他方、上記テンション
リールの回転数を取出すパルス発生器の出力パルス数が
所定値に達する毎に上記非接触式距離検出器の出力をサ
ンプリングして該サンプリン値により上記コイル径演算
装置の出力を補正することを特徴とするコイル径検出方
法。
(1) In the case where the coil diameter is detected by a coil diameter calculation device that calculates and outputs the coil diameter of the coil on the tension reel from the rotation speed of the tension reel and the stripping speed detected via the deflector roll, the tension reel A non-contact distance detector is arranged opposite to the upper coil so as to be movable in the radial direction of the coil, and the position of the non-contact distance detector is controlled using a coil diameter signal outputted by the coil diameter calculation device as a position reference signal, On the other hand, every time the number of output pulses of a pulse generator that extracts the rotational speed of the tension reel reaches a predetermined value, the output of the non-contact distance detector is sampled, and the output of the coil diameter calculation device is corrected based on the sampled value. A coil diameter detection method characterized by:
JP14764884A 1984-07-18 1984-07-18 Detecting method of diameter of coil Pending JPS6128804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14764884A JPS6128804A (en) 1984-07-18 1984-07-18 Detecting method of diameter of coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14764884A JPS6128804A (en) 1984-07-18 1984-07-18 Detecting method of diameter of coil

Publications (1)

Publication Number Publication Date
JPS6128804A true JPS6128804A (en) 1986-02-08

Family

ID=15435096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14764884A Pending JPS6128804A (en) 1984-07-18 1984-07-18 Detecting method of diameter of coil

Country Status (1)

Country Link
JP (1) JPS6128804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63112275U (en) * 1987-01-16 1988-07-19

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63112275U (en) * 1987-01-16 1988-07-19
JPH0526315Y2 (en) * 1987-01-16 1993-07-02

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