JPH07136717A - Method for controlling take-up machine - Google Patents

Method for controlling take-up machine

Info

Publication number
JPH07136717A
JPH07136717A JP30856393A JP30856393A JPH07136717A JP H07136717 A JPH07136717 A JP H07136717A JP 30856393 A JP30856393 A JP 30856393A JP 30856393 A JP30856393 A JP 30856393A JP H07136717 A JPH07136717 A JP H07136717A
Authority
JP
Japan
Prior art keywords
mandrel
strip
pressure
winding
force
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
JP30856393A
Other languages
Japanese (ja)
Other versions
JP2868401B2 (en
Inventor
Toru Kondo
透 近藤
Koji Noguchi
浩嗣 野口
Hironobu Tanaka
宏信 田中
Hiroyuki Yoshida
裕之 吉田
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP30856393A priority Critical patent/JP2868401B2/en
Publication of JPH07136717A publication Critical patent/JPH07136717A/en
Application granted granted Critical
Publication of JP2868401B2 publication Critical patent/JP2868401B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

PURPOSE:To prevent generation of surface flaws such as a topmark when a strip finished by rolling is taken up. CONSTITUTION:A hydraulic pressure by which a mandrel 1 is expanded is <=the specific deformation resistance of a strip shown by below mentioned formula when the strip is continuously taken up by the mandrel 1 which is applied with an expanding force in the radial direction by a hydraulic means 5. The formular is: the value of hydraulic pressure by which the mandrel is expanded <= the deformation resistance of the strip. Thus, reduce of quality and yield caused by surface flaws such as the topmark is prevented and high quality product coils are obtained.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、仕上げ圧延されたス
トリップを連続的に巻き取る巻取り機の制御方法に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a winding machine for continuously winding a finish-rolled strip.

【0002】[0002]

【従来の技術】仕上げ圧延されたストリップを連続的に
巻き取る巻取り機の制御方法に関しては、例えば特開平
1−224115号公報においては、油圧手段により径
方向に拡大する拡大力が付与されたマンドレルにより、
ストリップを連続的に巻取りつつ巻取られたコイルの巻
数を検出して残り巻数を把握し、これに基づき巻取り後
期におけるコイルの巻締まり力の低下を把握し、次いで
油圧手段のシリンダに通じる回路を減圧弁を有する減圧
回路に切替え、減圧弁で停止されたポンプ圧力をコイル
の残り巻数に基づいて別の回路に導き、ポンプ圧力が所
定の設定圧力以下に低下するまで圧油を逃がすようにし
た手段が開示されている。
2. Description of the Related Art As for a control method of a winder for continuously winding a finish-rolled strip, for example, in Japanese Patent Laid-Open No. 1-224115, an expanding force for expanding in the radial direction is applied by hydraulic means. By the mandrel,
While winding the strip continuously, the number of turns of the coil wound is detected to grasp the remaining number of turns, and based on this, the decrease in coil tightening force in the latter half of the winding is grasped, and then to the cylinder of hydraulic means. Switch the circuit to a pressure reducing circuit that has a pressure reducing valve, and guide the pump pressure stopped by the pressure reducing valve to another circuit based on the remaining number of turns of the coil so that the pressure oil will escape until the pump pressure drops below a specified set pressure. This means is disclosed.

【0003】[0003]

【発明が解決しようとする課題】しかしながら従来の巻
取り方法においては、巻き取り張力による巻締り力でマ
ンドレルを縮小させようとする力が巻き取り中に生じ
て、マンドレル径を拡大させている油圧回路の圧力が上
昇する。
However, in the conventional winding method, a force for reducing the mandrel by the winding tightening force due to the winding tension is generated during winding, and the hydraulic pressure for expanding the mandrel diameter is increased. The circuit pressure rises.

【0004】そのためマンドレルの拡大力は上昇し、巻
き取られたストリップの先端部が重なり合った段差部分
に圧縮力がはたらき、トップマークと呼ばれる表面疵が
生じて品質および歩留の低下を招くという問題点があっ
た。
Therefore, the expanding force of the mandrel increases, the compressive force acts on the step portion where the tips of the wound strips overlap each other, and surface defects called top marks occur, resulting in deterioration of quality and yield. There was a point.

【0005】この問題の一例を具体的に説明すると、図
1に示すように、ストリップSがマンドレル1上にコイ
ル状に巻き取られている。図1のAの部分を拡大して示
した図2で明らかなように、マンドレル1に巻取られて
いるストリップSの先端部2の上に重なって巻き取られ
ているストリップSには巻取り張力が作用し、これによ
り巻締り力による圧縮力が発生し、この反力としてマン
ドレルの拡大力が発生する。
A concrete example of this problem will be described. As shown in FIG. 1, a strip S is wound on a mandrel 1 in a coil shape. As is apparent from FIG. 2 which is an enlarged view of the portion A of FIG. 1, the strip S wound on the mandrel 1 is wound up on the tip S 2 of the strip S wound on the mandrel 1. Tension acts, whereby a compressive force due to the winding tightening force is generated, and as a reaction force, a mandrel expanding force is generated.

【0006】本発明はこの事情に鑑みなされたもので、
巻き取り中におけるストリップ表面疵(トップマーク)
の発生を防止する巻取り機の制御方法を提供する。
The present invention has been made in view of this situation.
Strip surface flaw during winding (top mark)
Provided is a method for controlling a winder, which prevents the occurrence of the above-mentioned problem.

【0007】[0007]

【課題を解決するための手段】この発明に係る巻取り機
の制御方法は、液圧手段により径方向に拡大する拡大力
が付与されたマンドレルによりストリップを連続的に巻
取るに際し、マンドレルを拡大して液圧系統の圧力をス
トリップの変形抵抗力以下となる所定の拡大力とするこ
とを特徴とする巻取り機の制御方法である。
SUMMARY OF THE INVENTION A winding machine control method according to the present invention enlarges a mandrel when continuously winding a strip by a mandrel to which an expanding force that expands in a radial direction is applied by hydraulic means. Then, the control method for the winding machine is characterized in that the pressure of the hydraulic system is set to a predetermined expansion force that is less than or equal to the deformation resistance of the strip.

【0008】[0008]

【作用】この発明に係る巻取り機の制御方法において
は、巻き取り初期の段階でポンプからシリンダに圧油を
供給し、マンドレル径を拡大としてストリップの巻取り
を始める。
In the winding machine control method according to the present invention, pressure oil is supplied from the pump to the cylinder at the initial stage of winding, and the mandrel diameter is increased to start winding the strip.

【0009】ストリップの巻取りが始まると、ストリッ
プの巻取り張力による巻締り力でマンドレルを拡大して
いる液圧系統の圧力が上昇し、これがマンドレルの拡大
力となる。
When the winding of the strip is started, the winding tightening force due to the winding tension of the strip increases the pressure of the hydraulic system expanding the mandrel, and this becomes the expanding force of the mandrel.

【0010】このマンドレル拡大力を例えば液圧手段の
拡大回路内に設けた圧力検出器で検出し、下記の(1)
式に従って求めたマンドレル拡大圧力値以下となるよう
に、液圧手段の拡大回路内の圧力を制御する。
This mandrel expanding force is detected by, for example, a pressure detector provided in the expanding circuit of the hydraulic means, and the following (1)
The pressure in the expansion circuit of the hydraulic means is controlled so as to be equal to or lower than the mandrel expansion pressure value obtained according to the formula.

【0011】[0011]

【数1】 液圧マンドレル拡大圧力値≦ストリップ変形抵抗力 ………(1)[Equation 1] Hydraulic mandrel expansion pressure value ≤ Strip deformation resistance ………… (1)

【0012】[0012]

【実施例】以下添付の図面を参照して、本発明の実施例
について具体的に説明する。
Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

【0013】ストリップの変形抵抗力及びマンドレルの
拡大力は上記の(1)式に基づいて求めると次の通りで
ある。
The deformation resistance of the strip and the expanding force of the mandrel are as follows when calculated based on the above equation (1).

【0014】[0014]

【数2】ストリップの変形抵抗力= 2Kg/mm2 マンドレルの拡大力 =65Kg/cm2 [Formula 2] Strip deformation resistance = 2 Kg / mm 2 Mandrel expanding force = 65 Kg / cm 2

【0015】図3は、本発明を実施するに好適なマンド
レル1の一例の内部を示す図面であり、ウェッジ3を軸
方向に摺動させることで、長手方向に4枚に分割された
セグメント4を軸直角方向に移動させてマンドレルの径
を変化させる。
FIG. 3 is a view showing the inside of an example of a mandrel 1 suitable for carrying out the present invention. By sliding the wedge 3 in the axial direction, the segment 4 divided into four pieces in the longitudinal direction is shown. Change the mandrel diameter by moving in the direction perpendicular to the axis.

【0016】ウェッジ3は油圧シリンダー5に連結され
ており、油圧シリンダー5にポンプ11からサーボ弁8
を介して圧油を供給することで摺動する。ポンプ11か
らの圧油は、減圧弁10により任意の圧力に減圧(例え
ば180kg/cm2 から100kg/cm2 に減圧)
されている。
The wedge 3 is connected to the hydraulic cylinder 5, and the hydraulic cylinder 5 is connected to the wedge cylinder 3 from the pump 11 to the servo valve 8.
It slides by supplying pressure oil via. The pressure oil from the pump 11 is reduced to an arbitrary pressure by the pressure reducing valve 10 (for example, from 180 kg / cm 2 to 100 kg / cm 2 ).
Has been done.

【0017】ストリップの巻取りに際しては、予め油圧
シリンダー5のロッド側ポート6に圧油を供給してマン
ドレル1を拡大しておき、拡大停止後もこれを維持して
ストリップを巻き始め、ストリップとマンドレルの間の
摩擦力を増大させて安定した巻き取りを行う。
When winding the strip, the mandrel 1 is expanded by supplying pressure oil to the rod side port 6 of the hydraulic cylinder 5 in advance, and after the expansion is stopped, the mandrel 1 is maintained to start winding the strip. Stable winding is performed by increasing the frictional force between the mandrels.

【0018】このとき、油圧シリンダー5のロッド側ポ
ート6の圧力を圧力検出器7で検出し、この圧力をフィ
ードバック制御する回路9を設け、この圧力変化に応じ
てサーボ弁8の開度を調整し、油圧シリンダー5のロッ
ド側ポート6の圧力を所定の圧力(65kg/cm2
となるように制御する。この制御はマンドレル1の拡大
停止から巻き終わりまで実施する。
At this time, a pressure detector 7 detects the pressure of the rod side port 6 of the hydraulic cylinder 5, and a circuit 9 for feedback controlling this pressure is provided, and the opening degree of the servo valve 8 is adjusted according to this pressure change. The pressure of the rod side port 6 of the hydraulic cylinder 5 to a predetermined pressure (65 kg / cm 2 )
Control so that. This control is carried out from the expansion stop of the mandrel 1 to the end of winding.

【0019】更にストリップ巻取り中にマンドレルの拡
大力を連続的に変更制御が必要な場合は、マンドレル1
の拡大の圧力をフィードバック制御する回路9におい
て、逐次前記(1)式に基づいてマンドレルの拡大圧力
値を演算し、その圧力となるように制御すれば良い。
Further, when it is necessary to continuously change the expanding force of the mandrel during winding the strip, the mandrel 1
In the circuit 9 for feedback controlling the expansion pressure of No. 2, the expansion pressure value of the mandrel may be sequentially calculated based on the equation (1), and the mandrel expansion pressure may be controlled to be that pressure.

【0020】またサーボ弁8を有しないマンドレル1の
拡大回路においては、減圧弁10の圧力設定値を(1)
式に基づいて演算したマンドレルの拡大圧力値に設定す
ればよい。
In the enlarged circuit of the mandrel 1 which does not have the servo valve 8, the pressure setting value of the pressure reducing valve 10 is set to (1).
It may be set to the mandrel expanded pressure value calculated based on the equation.

【0021】[0021]

【発明の効果】以上説明したように本発明は、液圧手段
により拡大力が付与されたマンドレルによりストリップ
を巻取るに際し、マンドレルを拡大して液圧系統の圧力
をストリップの変形抵抗力以下となる所定の拡大力とす
ることにより、巻き取り張力によってマンドレルを縮小
させようとする力による液圧回路の圧力上昇を防止する
ことが可能であり、巻き取られたストリップの先端部が
重なり合った部分に押しつけられる力を低減できて、ト
ップマーク等の表面疵による品質および歩留の低下を防
止することができ、良質な製品コイルを得ることができ
る。
As described above, according to the present invention, when the strip is wound by the mandrel to which the expanding force is applied by the hydraulic means, the mandrel is expanded to reduce the pressure of the hydraulic system to the deformation resistance of the strip or less. It is possible to prevent the pressure rise of the hydraulic circuit due to the force to shrink the mandrel due to the winding tension by setting the predetermined expansion force, and the tip end of the wound strip overlaps. It is possible to reduce the force to be pressed against, to prevent deterioration of quality and yield due to surface defects such as top marks, and to obtain a good quality product coil.

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

【図1】従来の一般的なストリップの巻取り状態を示す
側面図である。
FIG. 1 is a side view showing a conventional general strip winding state.

【図2】図1のA部詳細図である。FIG. 2 is a detailed view of part A of FIG.

【図3】本発明を実施するに好適なマンドレル内部とそ
の制御系統の一例を示す図面である。
FIG. 3 is a drawing showing an example of the inside of a mandrel and its control system suitable for implementing the present invention.

【符号の説明】[Explanation of symbols]

S ストリップ 1 マンドレル 2 ストリップの先端部 3 ウェッジ 4 セグメント 5 油圧シリンダー 6 ロッド側ポート 7 圧力検出器 8 サーボ弁 9 フィードバック制御回路 10 減圧弁 11 ポンプ S strip 1 mandrel 2 strip tip 3 wedge 4 segment 5 hydraulic cylinder 6 rod side port 7 pressure detector 8 servo valve 9 feedback control circuit 10 pressure reducing valve 11 pump

───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉田 裕之 大分県大分市大字西ノ洲1 新日本製鐵株 式会社大分製鐵所内内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroyuki Yoshida 1 Nishinosu, Oita City, Oita Prefecture Nippon Steel Co., Ltd. Inside Oita Works

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 液圧手段により径方向に拡大する拡大力
が付与されたマンドレルによりストリップを連続的に巻
取るに際し、マンドレルを拡大して液圧系統の圧力をス
トリップの変形抵抗力以下となる所定の拡大力とするこ
とを特徴とする巻取り機の制御方法。
1. When continuously winding a strip by a mandrel to which an expanding force that expands in the radial direction is applied by a hydraulic means, the mandrel is expanded so that the pressure of the hydraulic system becomes equal to or less than the deformation resistance of the strip. A method of controlling a winding machine, which is characterized by setting a predetermined expansion force.
JP30856393A 1993-11-16 1993-11-16 Winding machine control method Expired - Lifetime JP2868401B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30856393A JP2868401B2 (en) 1993-11-16 1993-11-16 Winding machine control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30856393A JP2868401B2 (en) 1993-11-16 1993-11-16 Winding machine control method

Publications (2)

Publication Number Publication Date
JPH07136717A true JPH07136717A (en) 1995-05-30
JP2868401B2 JP2868401B2 (en) 1999-03-10

Family

ID=17982533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30856393A Expired - Lifetime JP2868401B2 (en) 1993-11-16 1993-11-16 Winding machine control method

Country Status (1)

Country Link
JP (1) JP2868401B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100851496B1 (en) * 2002-05-29 2008-08-08 주식회사 포스코 Apparatus for preventing the inner end of coil from recoiling
US9662697B2 (en) 2012-11-28 2017-05-30 Toshiba Mitsubishi-Electric Industrial Systems Corporation Take-up device for strip

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100851496B1 (en) * 2002-05-29 2008-08-08 주식회사 포스코 Apparatus for preventing the inner end of coil from recoiling
US9662697B2 (en) 2012-11-28 2017-05-30 Toshiba Mitsubishi-Electric Industrial Systems Corporation Take-up device for strip

Also Published As

Publication number Publication date
JP2868401B2 (en) 1999-03-10

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