JP2013226595A - Method and apparatus for continuously straightening steel sheet - Google Patents

Method and apparatus for continuously straightening steel sheet Download PDF

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JP2013226595A
JP2013226595A JP2013043885A JP2013043885A JP2013226595A JP 2013226595 A JP2013226595 A JP 2013226595A JP 2013043885 A JP2013043885 A JP 2013043885A JP 2013043885 A JP2013043885 A JP 2013043885A JP 2013226595 A JP2013226595 A JP 2013226595A
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steel plate
steel
stop
straightening machine
steel sheet
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JP6089798B2 (en
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Yukinori Saito
幸典 齋藤
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Jfe Steel Corp
Jfeスチール株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for continuously straightening steel sheets that can reduce a time interval, i.e., straightening pitch, required for straightening one steel sheet out of a plurality of steel sheets in a set to improve productivity, i.e., throughput per unit time, by simultaneously starting the conveyance of the plurality of steel sheets as a set, and straightening the steel sheets at a plurality of paths while continuously feeding them into a roll straightener.SOLUTION: In straightening steel sheets S at a plurality of paths by a roll straightener 12, a plurality of steel sheets S, e.g., two steel sheets Sa, Sb, are set as a pair to simultaneously start conveyance, and are continuously straightened at the plurality of paths by the roll straightener 12 while being reciprocated and conveyed. Specifically, front and rear face stop position reference sensors 18, 20 are installed at front and rear face conveyance tables 14, 16 respectively, and a controller 24 controls the conveyance of the steel sheets Sa, Sb based on sheet thickness information and draft setting sameness/difference of the steel sheets Sa, Sb and the detected results of the sensors 18, 20.

Description

本発明は、複数の鋼板、例えば、厚鋼板を連続的にロール矯正機(ロールレベラ)に送り込みながら矯正する鋼板の連続矯正方法及び装置に関するものである。   The present invention relates to a method and an apparatus for continuously correcting a plurality of steel plates, for example, steel plates that are straightened while being fed into a roll straightening machine (roll leveler).
従来より、熱間圧延等の工程を経て製造された鋼板、例えば厚鋼板は、圧延における鋼板の温度分布や圧延での伸び変形の不均一により、反りや平坦度不良等の形状不良が発生することがある。鋼板内部に残留応力や平坦度不良が生じた場合には、鋼板をロール矯正機によって矯正することが行われている。
このように、鋼板をロール矯正機によって矯正する際には、通常、複数パスを要することが多い(例えば、特許文献1参照)。
鋼板を複数パスで矯正する場合には、ロール矯正機の前後面の搬送テーブルを1枚の鋼板のみで占有し、その鋼板を往復搬送しながらロール矯正機での矯正が行われている(例えば、特許文献2参照)。
また、複数の鋼板を一組にして複数パスで矯正する場合にも、複数の鋼板をロール矯正機に送り込む時点では、これらの複数の鋼板を個別に搬送することが行われている(例えば、特許文献3参照)。
Conventionally, steel plates manufactured through processes such as hot rolling, for example, thick steel plates, suffer from shape defects such as warpage and poor flatness due to uneven temperature distribution of the steel plates in rolling and uneven elongation deformation in rolling. Sometimes. When residual stress or flatness failure occurs in the steel plate, the steel plate is corrected by a roll straightening machine.
Thus, when correcting a steel plate with a roll straightening machine, a plurality of passes are usually required (see, for example, Patent Document 1).
When the steel plate is corrected by a plurality of passes, the conveyance table on the front and rear surfaces of the roll straightening machine is occupied by only one steel plate, and correction by the roll straightening machine is performed while reciprocating the steel plate (for example, , See Patent Document 2).
In addition, even when correcting a plurality of steel plates as a set by a plurality of passes, at the time when the plurality of steel plates are fed into a roll straightening machine, the plurality of steel plates are individually conveyed (for example, (See Patent Document 3).
特開2005−288510号公報JP 2005-288510 A 特開昭59−209423号公報JP 59-209423 A 特開2008−100260号公報JP 2008-100260 A
しかしながら、上記特許文献1及び2に記載のように、ロール矯正機の前後面の搬送テーブルを1枚の鋼板のみで占有し、その鋼板を往復搬送しながら1枚ずつロール矯正機で矯正を行うのでは、ある鋼板の矯正開始から次の鋼板の矯正開始までの時間間隔(矯正ピッチ)が長くなり、生産性(単位時間当りの処理量)を低下させてしまうという問題がある。
上記特許文献3に記載のように、複数の鋼板を一組にして複数パスで矯正することで、上記特許文献1及び2に記載の場合よりも、矯正ピッチを短縮でき、生産性を向上させることができるが、複数の鋼板をロール矯正機に送り込む時点では、これら複数の鋼板が、個別に搬送されるので、矯正ピッチの短縮及び生産性の向上には、限界があった。
However, as described in Patent Documents 1 and 2, the conveyance table on the front and rear surfaces of the roll straightening machine is occupied by only one steel sheet, and correction is performed by the roll straightening machine one by one while reciprocating the steel sheet. Therefore, there is a problem that the time interval (correction pitch) from the start of correction of one steel plate to the start of correction of the next steel plate becomes long, and the productivity (processing amount per unit time) is lowered.
As described in Patent Document 3, the correction pitch can be shortened and the productivity can be improved by correcting a plurality of steel plates as a set with a plurality of passes, as compared with the case described in Patent Documents 1 and 2. However, at the time when a plurality of steel plates are fed to a roll straightening machine, the plurality of steel plates are individually conveyed, so there is a limit to shortening the correction pitch and improving productivity.
本発明は、上記のような事情に鑑みてなされたものであり、鋼板をロール矯正機によって複数パスで矯正するに際して、複数枚の鋼板を一組にして同時に搬送し、連続的に、即ち、先行して矯正する鋼板とこれに続いて後行して矯正する鋼板とで圧下率の設定が異なる場合には、1枚の鋼板をロール矯正機で矯正している間、ロール矯正機の前面又は後面で待機させておき、先行する鋼板の矯正終了後直ちに後行する鋼板をロール矯正機に送り込みながら矯正することで、圧下率の設定が同一である場合には、先行する鋼板の矯正終了を待たずに連続して後行する鋼板をロール矯正機に送り込みながら矯正することで、一組の複数枚の鋼板の1枚当たりの矯正に要する時間間隔、即ち矯正ピッチをさらに短縮して生産性、即ち単位時間当りの処理量の向上をさらに図ることができる鋼板の連続矯正方法及び装置を提供することを目的とするものである。   The present invention has been made in view of the circumstances as described above, and when correcting a steel sheet in a plurality of passes by a roll straightener, a plurality of steel sheets are transported simultaneously as a set, continuously, that is, When the rolling reduction setting is different between the steel sheet to be corrected in advance and the steel sheet to be corrected subsequently, the front of the roll straightening machine is used while one sheet is being straightened by the roll straightening machine. Or, if the setting of the rolling reduction is the same by keeping the waiting on the rear surface and correcting the steel sheet that follows immediately after finishing the correction of the preceding steel sheet to the roll straightener, the correction of the preceding steel sheet is completed. Produced by further shortening the time interval required for correction per sheet of a set of multiple steel sheets, that is, the correction pitch, by making corrections while feeding subsequent steel sheets to the roll straightener without waiting for I.e. per unit time It is an object to provide a continuous correction method and apparatus of the steel sheet can be further improved physical quantities.
上記課題を解決するために、本発明の第1の態様の鋼板の連続矯正方法は、鋼板をロール矯正機によって複数パスで矯正するに際し、複数枚の鋼板を一組にして同時に搬送を開始し、前記一組の前記複数の鋼板を一組にして往復搬送しながら連続して矯正することを特徴とする。   In order to solve the above problems, the method for continuously correcting a steel sheet according to the first aspect of the present invention starts to convey a set of a plurality of steel sheets at the same time when the steel sheet is corrected by a roll straightener in a plurality of passes. The set of the plurality of steel plates is set as a set and continuously corrected while being reciprocated.
ここで、前記一組の前記複数の鋼板に対する矯正の圧下設定が同一である場合には、前記ロール矯正機において先に矯正を開始する先行の鋼板を矯正中に、同時に、前記先行の鋼板に続いて矯正を開始する後行の鋼板を矯正することが好ましい。
また、前記ロール矯正機の前面の搬送テーブルにおいて、前記一組の各鋼板が一時停止する際の基準となる停止基準位置に前面停止位置基準センサを設置し、各鋼板の板厚情報及び前記前面停止位置基準センサの検知結果に基づいて、各鋼板の搬送を制御することが好ましい。
さらに、前記ロール矯正機の後面の搬送テーブルにおいて、前記一組の各鋼板が一時停止する際の基準となる停止基準位置に後面停止位置基準センサを設置し、各鋼板の板厚情報と前記後面停止位置基準センサの検知結果に基づいて、各鋼板の搬送を制御することが好ましい。
Here, when the rolling reduction setting for the set of the plurality of steel plates is the same, during the correction of the preceding steel plate that starts the correction first in the roll straightening machine, at the same time, the preceding steel plate Subsequently, it is preferable to correct a subsequent steel plate that starts correction.
In addition, in the transport table on the front surface of the roll straightening machine, a front stop position reference sensor is installed at a stop reference position that serves as a reference when each set of steel plates is temporarily stopped. It is preferable to control the conveyance of each steel plate based on the detection result of the stop position reference sensor.
Furthermore, in the conveyance table on the rear surface of the roll straightening machine, a rear surface stop position reference sensor is installed at a stop reference position that serves as a reference when the set of each steel plate is temporarily stopped, and the thickness information of each steel plate and the rear surface It is preferable to control the conveyance of each steel plate based on the detection result of the stop position reference sensor.
また、前記ロール矯正機において先に矯正を開始する前記先行の鋼板と前記先行の鋼板に続いて矯正を開始する前記後行の鋼板とについて、矯正の圧下設定が同一である場合には、前記先行の鋼板に続いて前記後行の鋼板が前記前面停止位置基準センサで検知されても、前記後行の鋼板を前記前面の搬送テーブルの前記停止基準位置で一時停止させることなく、前記先行の鋼板が前記ロール矯正機による矯正を受けて前記ロール矯正機を抜ける前に、前記後行の鋼板を前記ロール矯正機に送り込むこととし、前記先行の鋼板と前記後行の鋼板とについて、矯正の圧下設定が異なる場合には、前記先行の鋼板に続いて前記後行の鋼板が前記前面停止位置基準センサで検知された時点で、前記後行の鋼板を前記前面の搬送テーブルの前記停止基準位置で一時停止させ、前記先行の鋼板が前記ロール矯正機による矯正を受けて前記ロール矯正機を抜け、前記後面の搬送テーブル上に移動し、かつ前記後行の鋼板に対する前記ロール矯正機の圧下設定が完了した時点で、前記前面の搬送テーブル上で一時停止していた前記後行の鋼板を前記ロール矯正機に送り込むことが好ましい。   In the roll straightener, the preceding steel plate that starts correction first and the subsequent steel plate that starts correction following the preceding steel plate, when the correction reduction setting is the same, Even if the succeeding steel plate is detected by the front stop position reference sensor following the preceding steel plate, the succeeding steel plate is temporarily stopped at the stop reference position of the front transfer table without stopping the preceding steel plate. Before the steel sheet is corrected by the roll straightening machine and leaves the roll straightening machine, the subsequent steel sheet is fed into the roll straightening machine, and the preceding steel sheet and the following steel sheet are corrected. When the reduction setting is different, the subsequent steel plate is detected by the front stop position reference sensor after the preceding steel plate, and the subsequent steel plate is moved to the stop reference of the front transport table. The preceding steel plate is corrected by the roll straightening machine, passes through the roll straightening machine, moves onto the rear conveyance table, and the roll straightening machine reduces the following steel plate. When the setting is completed, it is preferable to feed the succeeding steel plate that has been temporarily stopped on the front conveyance table to the roll straightening machine.
また、前記ロール矯正機の前記前面の搬送テーブルに板厚測定手段を設置して、該板厚測定手段によって各鋼板の板厚を確認することが好ましい。   Moreover, it is preferable to install plate thickness measuring means on the front conveying table of the roll straightening machine and to check the plate thickness of each steel plate by the plate thickness measuring means.
また、上記課題を解決するために、本発明の第2の態様の鋼板の連続矯正装置は、鋼板を矯正するロール矯正機と、前記ロール矯正機の前面に配置され、前記ロール矯正機において矯正されている鋼板の後に矯正が開始される少なくとも1枚の鋼板を搬送する、又は停止させておく前面の搬送テーブルと、前記ロール矯正機の後面に配置され、前記ロール矯正機において先に矯正された少なくとも1枚の鋼板を搬送する、又は停止させておく後面の搬送テーブルと、複数枚の鋼板を一組にして、前記ロール矯正機、並びに前記前面の搬送テーブル及び/又は前記後面の搬送テーブルで同時に往復搬送しながら鋼板を前記ロール矯正機によって複数パスで連続して矯正するように、前記ロール矯正機、前記前面の搬送テーブル及び前記後面の搬送テーブルによる各鋼板の搬送を制御するコントローラとを有し、前記コントローラは、前記ロール矯正機、並びに前記前面の搬送テーブル及び/又は前記後面の搬送テーブルにおいて、前記一組の前記複数の鋼板の搬送を同時に開始するように制御することを特徴とする。   Moreover, in order to solve the said subject, the continuous correction apparatus of the steel plate of the 2nd aspect of this invention is arrange | positioned in the front of the roll straightening machine which corrects a steel plate, and the said roll straightening machine, and corrects in the said roll straightening machine It is arranged on the rear surface of the roll straightening machine and the front straightening table that conveys or stops at least one steel sheet to be straightened after the steel sheet being straightened, and is straightened first in the roll straightening machine. Further, a rear conveyance table for conveying or stopping at least one steel plate, and a plurality of steel plates as a set, the roll straightening machine, and the front conveyance table and / or the rear conveyance table. The roll straightener, the front transport table, and the rear transport so that the steel sheet is continuously straightened in multiple passes by the roll straightener while reciprocally transporting at the same time. A controller for controlling the conveyance of each steel plate by a table, wherein the controller conveys the set of the plurality of steel plates in the roll straightener and the front conveyance table and / or the rear conveyance table. Are controlled to start simultaneously.
ここで、前記コントローラは、前記一組の前記複数の鋼板に対する矯正の圧下設定が同一である場合には、前記ロール矯正機において先に矯正を開始する先行の鋼板を矯正中に、同時に、前記先行の鋼板に続いて矯正を開始する後行の鋼板を矯正するように制御することが好ましい。
また、本発明の第2の態様は、さらに、前記前面の搬送テーブルの、前記一組の各鋼板が一時停止する際の基準となる停止基準位置に設置された前面停止位置基準センサを有
し、前記コントローラは、前記一組の各鋼板の板厚情報及び前記前面停止位置基準センサの検知結果に基づいて、各鋼板の搬送を制御することが好ましい。
また、本発明の第2の態様は、さらに、前記後面の搬送テーブルの、前記一組の各鋼板が一時停止する際の基準となる停止基準位置に設置された後面停止位置基準センサを有
し、前記コントローラは、前記一組の各鋼板の板厚情報及び前記後面停止位置基準センサの検知結果に基づいて、各鋼板の搬送を制御することが好ましい。
Here, when the reduction setting of the correction for the set of the plurality of steel plates is the same, the controller simultaneously corrects the preceding steel plate that starts the correction first in the roll straightening machine. It is preferable to perform control so as to straighten the subsequent steel plate that starts the straightening following the preceding steel plate.
In addition, the second aspect of the present invention further includes a front stop position reference sensor installed at a stop reference position serving as a reference when the set of each steel plate temporarily stops on the front transfer table. The controller preferably controls the conveyance of each steel plate based on the thickness information of each set of each steel plate and the detection result of the front stop position reference sensor.
Further, the second aspect of the present invention further includes a rear surface stop position reference sensor installed at a stop reference position serving as a reference when the set of steel plates temporarily stops on the rear surface transfer table. The controller preferably controls the conveyance of each steel plate based on the thickness information of each set of each steel plate and the detection result of the rear surface stop position reference sensor.
また、前記コントローラは、前記ロール矯正機において先に矯正を開始する前記先行の鋼板と前記先行の鋼板に続いて矯正を開始する前記後行の鋼板とについて、矯正の圧下設定が同一である場合には、前記先行の鋼板に続いて前記後行の鋼板が前記前面停止位置基準センサで検知されたことを示す検知結果を受けても、前記後行の鋼板を前記前面の搬送テーブルの前記停止基準位置で一時停止させることなく、前記先行の鋼板が前記ロール矯正機による矯正を受けて前記ロール矯正機を抜ける前に、前記後行の鋼板を前記ロール矯正機に送り込むように制御し、前記先行の鋼板と前記後行の鋼板とについて、矯正の圧下設定が異なる場合には、前記先行の鋼板に続いて前記後行の鋼板が前記前面停止位置基準センサで検知されたことを示す検知結果を受けて、前記後行の鋼板を前記前面の搬送テーブルの前記停止基準位置で一時停止させ、前記先行の鋼板が前記ロール矯正機による矯正を受けて前記ロール矯正機を抜け、前記後面の搬送テーブル上に移動したことを示す情報、及び前記後行の鋼板に対する前記ロール矯正機の圧下設定が完了したことを示す情報を受けて、前記前面の搬送テーブル上で一時停止していた前記後行の鋼板を前記ロール矯正機に送り込むように制御することが好ましい。   In addition, the controller is configured such that the rolling reduction setting is the same for the preceding steel plate that starts correction first in the roll straightening machine and the subsequent steel plate that starts correction following the preceding steel plate. In the case of receiving the detection result indicating that the succeeding steel plate is detected by the front stop position reference sensor following the preceding steel plate, the succeeding steel plate is moved to the stop of the front conveying table. Without stopping temporarily at a reference position, before the preceding steel plate undergoes correction by the roll straightener and exits the roll straightener, the subsequent steel plate is controlled to be fed into the roll straightener, When the rolling reduction setting for the preceding steel plate and the following steel plate is different, it indicates that the following steel plate is detected by the front stop position reference sensor following the preceding steel plate. In response to the knowledge result, the subsequent steel plate is temporarily stopped at the stop reference position of the front transfer table, the preceding steel plate is corrected by the roll straightening machine and passes through the roll straightening machine, and the rear surface In response to the information indicating that it has moved onto the transport table and the information indicating that the reduction setting of the roll straightener for the subsequent steel plate has been completed, It is preferable to control the subsequent steel plate to be fed into the roll straightening machine.
また、本発明の第2の態様は、さらに、前記ロール矯正機の前記前面の搬送テーブルに設置された板厚測定手段を有し、前記コントローラは、前記板厚測定手段によって各鋼板の板厚を確認することが好ましい。   Further, the second aspect of the present invention further includes a plate thickness measuring means installed on the front conveying table of the roll straightening machine, and the controller is configured to measure the plate thickness of each steel plate by the plate thickness measuring means. It is preferable to confirm.
本発明によれば、複数枚の鋼板を一組として往復搬送しながらロール矯正機によって複数パスで連続して矯正するようにしているので、一組の複数枚の鋼板の1枚当たりの矯正に要する時間間隔、即ち矯正ピッチを短縮して生産性、即ち単位時間当りの処理量の向上を可能にすることができる。   According to the present invention, since a plurality of steel sheets are reciprocally conveyed as a set and are continuously corrected in a plurality of passes by a roll straightening machine, it is possible to correct one set of a plurality of steel sheets per sheet. The required time interval, that is, the correction pitch can be shortened to improve the productivity, that is, the throughput per unit time.
本発明の一実施形態に係る鋼板の連続矯正装置の一例の構成を示す模式的断面図である。It is a typical sectional view showing the composition of an example of the continuous correction device of the steel plate concerning one embodiment of the present invention. 本発明の鋼板の連続矯正方法の最初のパスの矯正手順の一実施例を示すフローチャートである。It is a flowchart which shows one Example of the correction procedure of the first pass of the continuous correction method of the steel plate of this invention. (a)〜(e)は、図1に示す鋼板の連続矯正装置における鋼板の搬送及び矯正の順序を模式的に示す断面図である。(A)-(e) is sectional drawing which shows typically the order of conveyance and correction of the steel plate in the continuous correction apparatus of the steel plate shown in FIG.
本発明に係る鋼板の連続矯正方法及び装置を添付の図面に示す好適実施形態に基づいて詳細に説明する。
図1は、本発明の一実施形態に係る鋼板の連続矯正装置の一実施例の構成を示す模式的断面図である。
A method and apparatus for continuously correcting a steel sheet according to the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings.
FIG. 1 is a schematic cross-sectional view showing the configuration of an example of a continuous correction apparatus for steel sheets according to an embodiment of the present invention.
同図に示す鋼板の連続矯正装置(以下、ロール矯正設備という)10は、複数枚の鋼板Sを一組にして往復搬送しながら連続して矯正するためのもので、鋼板Sを複数パスで矯正するロール矯正機12と、ロール矯正機12の前面に配置された前面搬送テーブル14と、ロール矯正機12の後面に配置された後面搬送テーブル16と、前面搬送テーブル14の、鋼板Sの停止基準位置に設置された前面停止位置基準センサ18と、後面搬送テーブル16における、鋼板Sが一時停止する際の基準となる停止基準位置に設置された後面停止位置基準センサ20と、前面搬送テーブル14に設置された板厚測定器(平坦度計)22と、ロール矯正機12、前面の搬送テーブル14及び後面の搬送テーブル16による各鋼板Sの搬送を制御するコントローラ24と、を有する。
なお、ここでは、ロール矯正機12の前面とは、矢印aで示す鋼板Sの搬送方向の上流側であり、鋼板Sを複数パスで矯正する場合の最初のパス(又は奇数パス目)を開始する側のことを言う。一方、ロール矯正機12の後面とは、鋼板Sの搬送方向aの下流側で、鋼板Sを複数パスで矯正する場合の偶数パス目を開始する側のことを言う。また、ここでは、上流及び下流は、鋼板Sの搬送方向aに対して定義するものとする。
A steel sheet continuous straightening device (hereinafter referred to as roll straightening equipment) 10 shown in FIG. 1 is used to continuously straighten a plurality of steel sheets S while reciprocating them. Stop of the steel sheet S of the roll straightening machine 12 to be corrected, the front conveyance table 14 disposed on the front surface of the roll straightening machine 12, the rear conveyance table 16 disposed on the rear surface of the roll straightening machine 12, and the front conveyance table 14. The front stop position reference sensor 18 installed at the reference position, the rear stop position reference sensor 20 installed at the stop reference position serving as a reference when the steel sheet S temporarily stops in the rear transfer table 16, and the front transfer table 14. A plate thickness measuring device (flatness meter) 22 installed in the machine, a roll straightening machine 12, a front conveyance table 14, and a rear conveyance table 16 are used to control conveyance of each steel sheet S. It has a roller 24.
Here, the front surface of the roll straightening machine 12 is the upstream side in the conveying direction of the steel sheet S indicated by the arrow a, and the first pass (or odd-numbered pass) when the steel sheet S is straightened by a plurality of passes is started. Say the side to do. On the other hand, the rear surface of the roll straightening machine 12 is the downstream side of the conveying direction a of the steel sheet S and the side where the even-numbered pass is started when the steel sheet S is corrected by a plurality of passes. Here, upstream and downstream are defined with respect to the conveying direction a of the steel sheet S.
ロール矯正機12は、互いに千鳥状に配置された、複数、図示例では4つの上矯正ロール26a〜26dと、複数、図示例では5つの下矯正ロール28a〜28eとを有し、その間に被矯正材となる鋼板を通して繰返し曲げ加工を与えるものである。各上矯正ロール26a〜26dの下端及び各下矯正ロール28a〜28eの上端(頂点)は、それぞれ、同一平面内に位置し、鋼板Sの搬送方向aのパスラインbに平行になっている。
ロール矯正機12は、図示ないが、さらに、公知のロール矯正機と同様に、上矯正ロール26a〜26dをそれぞれ支持する上バックアップロールと、この上バックアップロールを軸受けを介して取り付けるための上フレームと、上フレームに取り付けられ、上フレーム、上バックアップロールを介して上矯正ロール26a〜26dによる鋼板Sの圧下率(又は圧下量)を調整する圧下装置、例えば鋼板の入側圧下率を調整する入側圧下装置及び鋼板の出側圧下率を調整する出側圧下装置と、下矯正ロール28a〜28eをそれぞれ支持する下バックアップロールと、この下バックアップロールを軸受けを介して取り付けるための下フレームと、を有する。
The roll straightening machine 12 has a plurality of, in the illustrated example, four upper straightening rolls 26a to 26d, and a plurality of, in the illustrated example, five lower straightening rolls 28a to 28e, which are arranged in a staggered manner with each other. A bending process is given repeatedly through a steel plate as a straightening material. The lower ends of the upper correction rolls 26a to 26d and the upper ends (vertices) of the lower correction rolls 28a to 28e are located in the same plane and are parallel to the pass line b in the conveying direction a of the steel sheet S.
Although not shown, the roll straightening machine 12 further has an upper backup roll for supporting the upper straightening rolls 26a to 26d, and an upper frame for mounting the upper backup roll via a bearing, similarly to known roll straightening machines. And a reduction device that adjusts the reduction rate (or reduction amount) of the steel sheet S by the upper correction rolls 26a to 26d via the upper frame and the upper backup roll, for example, adjusting the entry side reduction rate of the steel sheet. An entry-side reduction device, an exit-side reduction device that adjusts the exit-side reduction rate of the steel sheet, a lower backup roll that supports the lower correction rolls 28a to 28e, and a lower frame for attaching the lower backup roll via a bearing Have.
ロール矯正機12では、このような構成により、矯正すべき鋼板Sの矯正を開始する前に、コントローラ24によって、矯正対象のこの鋼板Sの予め送られてきている板厚、板幅及び鋼種等の情報に応じて、ロール矯正機12において圧下率の設定(圧下設定ともいう)が行われる。これらの圧下率の設定は、鋼板Sの板厚、板幅及び鋼種に応じた所定の圧下率が設定されるが、上矯正ロール26a〜26dと下矯正ロール28a〜28eとの各々の組み合わせ毎に行われるのが好ましい。
本発明においては、前後の鋼板Sの板厚の差が大きいと、圧下率の設定に時間がかかるので、複数枚の鋼板Sを一組にする場合、鋼板Sの板厚が近いものを一組にするのが好ましいが、板厚の差が他の鋼板Sと大きく異なるものは1枚の鋼板Sのみを一組としても良く、一組にする鋼板Sの枚数には特に制限を設ける必要はない。
なお、本発明においては、複数枚の鋼板Sを一組にして連続矯正を行うので、コントローラ24による一組の複数枚の鋼板Sの矯正のための圧下率(矯正の圧下設定)が各鋼板Sで異なる場合には、各鋼板の矯正を開始する前に、各鋼板の圧下設定を行う必要があるが、矯正のための圧下率(矯正の圧下設定)が各鋼板Sで同一である場合には、圧下設定を行わずに、各鋼板Sをそのまま連続して矯正する。このような場合には、最初に先行して矯正を行う先行の鋼板Sに対しては、予め圧下設定を行うようにするのが好ましい。
In the roll straightening machine 12, with such a configuration, before starting the correction of the steel sheet S to be corrected, the controller 24 sends the plate thickness, the sheet width, the steel type, and the like of the steel sheet S to be corrected in advance. In accordance with this information, the roll straightening machine 12 sets the reduction ratio (also referred to as reduction setting). As for the setting of these rolling reduction ratios, predetermined rolling reduction ratios are set according to the plate thickness, sheet width, and steel type of the steel sheet S. For each combination of the upper straightening rolls 26a to 26d and the lower straightening rolls 28a to 28e. It is preferable to be performed.
In the present invention, if the difference between the thicknesses of the front and rear steel plates S is large, it takes time to set the reduction ratio. Therefore, when a plurality of steel plates S are combined, one steel plate S with a similar thickness is used. It is preferable to make a set, but if the difference in plate thickness is greatly different from other steel plates S, only one steel plate S may be set as one set, and the number of steel plates S to be set in particular needs to be limited. There is no.
In the present invention, since a plurality of steel plates S are set as a set and continuous correction is performed, the reduction rate (correction reduction setting) for correcting a set of the plurality of steel plates S by the controller 24 is set for each steel plate. In the case where S is different, it is necessary to set the reduction of each steel plate before starting the correction of each steel plate, but the reduction rate for correction (the reduction setting for correction) is the same for each steel plate S. In this case, the steel plates S are continuously corrected as they are without setting the reduction. In such a case, it is preferable to perform the reduction setting in advance for the preceding steel sheet S to be corrected first in advance.
図示例のロール矯正機12では、通常、鋼板の下面が通過するラインであるパスラインbに沿った搬送方向aの1パス目において大きな圧下率で強圧下し、次いで、搬送方向aと逆方向(戻り方向)cの2パス目において小さな圧下率で弱圧下して、1往復の2パスで鋼板Sの残留応力を除去し、反り等の形状を平坦に整えることが行われているが、さらに、搬送方向aの3パス目以降、奇数パス目及びその逆方向cの偶数パス目において徐々に圧下率を小さくして圧下することを繰り返しても良い。なお、3パス目以降の奇数パス目、例えば3パス目や5パス目等において、反り等が許容範囲となり、鋼板Sの矯正が完了していると判断される場合には、その逆方向cの偶数パス目、例えば4パス目や6パス目等を省略してもよい。   In the roll straightening machine 12 in the illustrated example, the sheet is generally strongly reduced at a large reduction rate in the first pass in the conveyance direction a along the pass line b that is a line through which the lower surface of the steel plate passes, and then reverse to the conveyance direction a. (Return direction) In the second pass of c, it is reduced by a small reduction rate, the residual stress of the steel sheet S is removed by one reciprocating two passes, and the shape such as warping is made flat. Further, after the third pass in the transport direction a, the reduction may be repeated by gradually reducing the reduction rate in the odd pass and the even pass in the opposite direction c. In the odd-numbered pass after the third pass, for example, the third pass, the fifth pass, and the like, when it is determined that the warp or the like is within an allowable range and the correction of the steel sheet S is completed, the reverse direction c The even-numbered pass, for example, the fourth pass and the sixth pass may be omitted.
前面搬送テーブル14は、複数、図示例では10本のテーブルローラ30からなり、コントローラ24の制御の下、図示しないクレーン等により載置された、あるいは、さらに上流から搬送された、ロール矯正機12で矯正されるべき鋼板Sを搬送方向aに搬送したり、停止させたり、ロール矯正機12において1以上のパスで矯正された鋼板Sを搬送方向aと逆方向cに搬送したり、停止させたりするためのものである。
前面搬送テーブル14は、一組をなす複数の鋼板Sを、奇数パス目で、1枚ずつ順次ロール矯正機12に送り込み、偶数パス目で、1枚ずつ順次ロール矯正機12から受け取るもので、一組をなす全ての鋼板Sの矯正が完了したら、これらの一組をなす全ての鋼板Sは図示しないクレーン等により前面搬送テーブル14上から移動される。なお、前述のように、奇数パス目で矯正が完了した場合には、それに続く偶数パス目を省略することができる。この場合、鋼板Sは、後面搬送テーブル16上から、図示しないクレーンなどにより移動され、あるいは、さらに下流へ搬送される。
The front conveyance table 14 includes a plurality of, in the illustrated example, ten table rollers 30, and is placed by a crane or the like (not shown) under the control of the controller 24 or further conveyed from the upstream. The steel sheet S to be straightened is transported in the transport direction a, stopped, the steel sheet S corrected in one or more passes in the roll straightening machine 12 is transported in the direction c opposite to the transport direction a, or stopped. It is for doing.
The front transfer table 14 is a set of a plurality of steel plates S that are sequentially fed to the roll straightening machine 12 one by one in the odd-numbered pass, and are sequentially received from the roll straightening machine 12 one by one in the even-numbered pass. When correction of all the steel plates S forming one set is completed, all the steel plates S forming one set are moved from the front conveyance table 14 by a crane or the like (not shown). As described above, when correction is completed in the odd-numbered pass, the subsequent even-numbered pass can be omitted. In this case, the steel sheet S is moved from the rear conveyance table 16 by a crane (not shown) or is further conveyed downstream.
具体的には、前面搬送テーブル14は、例えば、コントローラ24の制御の下、最初のパス、又は、奇数パス目においては、矯正されるべき鋼板Sを搬送方向aに搬送し、圧下率が設定されている場合にそのまま、圧下率が未設定の場合には後述するように搬送を停止して圧下率設定後、ロール矯正機12に送り込み、先行する鋼板Saがロール矯正機12で矯正されている間、この鋼板Saの後に矯正が開始される後行の鋼板Sbを搬送方向aに搬送し、コントローラ24による圧下設定が異なる場合には、その後行の鋼板Sbを一時停止する際の基準となる停止基準位置Paに停止させ、コントローラ24による圧下設定が同一である場合には、後行の鋼板Sbを停止基準位置Paに停止させること無く、そのまま搬送方向aに連続搬送してロール矯正機12に送り込む。ここで、停止基準位置Paは、奇数パス目において矯正されるべき鋼板Sを停止させる際に、その下流側先端が停止する位置であり、前面搬送テーブル14上の、ロール矯正機12に近接した所定の位置である。なお、偶数パス目において矯正され、ロール矯正機12を抜けた鋼板Sを停止基準位置Paで一時停止させるようにしても良い。
一方、前面搬送テーブル14は、例えば、コントローラ24の制御の下、戻りのパス、即ち偶数パス目においては、ロール矯正機12から、往復パスで矯正されて、逆方向cに抜けた鋼板Sを、コントローラ24による圧下設定が異なる場合には、必要に応じて、逆方向cに搬送し、後行の鋼板Sがロール矯正機12で矯正されている間、その下流側先端が停止基準位置Paに来るように停止させる。一方、コントローラ24による圧下設定が同一である場合には、ロール矯正機12から逆方向cに抜けた鋼板Sを停止基準位置Paに停止させることなく搬送しても良い。
Specifically, the front transfer table 14 transfers, for example, the steel plate S to be corrected in the transfer direction a in the first pass or the odd pass under the control of the controller 24, and the reduction rate is set. If the rolling reduction rate is not set as it is, the conveyance is stopped and the rolling reduction rate is set as described later, and then sent to the roll straightening machine 12, and the preceding steel plate Sa is straightened by the roll straightening machine 12. When the subsequent steel plate Sb after the steel plate Sa is started to be corrected is transported in the transport direction a and the reduction setting by the controller 24 is different, the reference when the subsequent steel plate Sb is temporarily stopped When the reduction setting by the controller 24 is the same, the subsequent steel plate Sb is continuously transported in the transport direction a without being stopped at the stop reference position Pa. Fed to the roll straightening machine 12 Te. Here, the stop reference position Pa is a position where the downstream end of the steel sheet S to be corrected in the odd-numbered pass stops, and is close to the roll straightening machine 12 on the front conveyance table 14. It is a predetermined position. Note that the steel sheet S that has been corrected in the even-numbered pass and passed through the roll straightening machine 12 may be temporarily stopped at the stop reference position Pa.
On the other hand, the front transfer table 14 is, for example, the steel plate S that has been corrected by the reciprocating path from the roll straightening machine 12 and removed in the reverse direction c from the roll straightener 12 under the control of the controller 24. When the reduction setting by the controller 24 is different, it is conveyed in the reverse direction c as necessary, and while the succeeding steel sheet S is being corrected by the roll straightening machine 12, the downstream tip thereof is the stop reference position Pa. Stop to come on. On the other hand, when the reduction setting by the controller 24 is the same, the steel sheet S that has come out of the roll straightening machine 12 in the reverse direction c may be transported without stopping at the stop reference position Pa.
なお、前面搬送テーブル14は、2枚以上の鋼板Sを同時に搬送するものでも良いのはもちろんである。
また、奇数パス目では、コントローラ24の制御の下、先行する鋼板Sがロール矯正機12で矯正されている間に、前面搬送テーブル14が2枚以上の後行の鋼板Sを同時に搬送する場合、コントローラ24による圧下設定が異なる場合には、前面搬送テーブル14は、ロール矯正機12に最も近い1枚の後行の鋼板Sを停止基準位置Paに停止させ、その後に続く1枚以上の後行の鋼板Sを、その時点の位置で停止させて、停止した2枚以上の後行の鋼板Sの間に、衝突しないように、所定の間隔を空けておくのが好ましい。これに対し、コントローラ24による圧下設定が同一である場合には、前面搬送テーブル14は、ロール矯正機12に最も近い1枚の後行の鋼板Sを停止基準位置Paに停止させることなく搬送して、ロール矯正機12に送り込み、2枚以上の後行の鋼板Sを同時に搬送することを続けても良い。
また、偶数パス目では、コントローラ24の制御の下、前面搬送テーブル14が2枚以上の後行の鋼板Sを同時に搬送する場合、ロール矯正機12を抜けた矯正済鋼板Sを受け取り、必要に応じて、逆方向cに搬送して、停止基準位置Paに停止させ、その上流側にある先行する1枚以上の鋼板Sを、その時点の位置で停止させ、停止した2枚以上の先行する鋼板Sの間に所定の間隔を空けておくのが好ましい。これに対し、コントローラ24による圧下設定が同一である場合には、前面搬送テーブル14は、矯正済鋼板Sを停止基準位置Paに停止させることなく、2枚以上の後行の鋼板Sを同時に搬送することを続けとも良い。
Needless to say, the front transfer table 14 may transfer two or more steel plates S simultaneously.
Further, in the odd-numbered pass, when the front steel plate S is simultaneously being corrected by the roll straightener 12 under the control of the controller 24, the front transfer table 14 simultaneously transfers two or more subsequent steel plates S. When the reduction setting by the controller 24 is different, the front conveyance table 14 stops the one succeeding steel plate S closest to the roll straightening machine 12 at the stop reference position Pa, and the subsequent one or more subsequent sheets. It is preferable that the row steel plates S are stopped at the position at that time, and a predetermined interval is provided so as not to collide between the stopped two or more succeeding steel plates S. On the other hand, when the reduction setting by the controller 24 is the same, the front conveyance table 14 conveys one subsequent steel plate S closest to the roll straightening machine 12 without stopping at the stop reference position Pa. Then, the sheet may be fed into the roll straightening machine 12 and continued to carry two or more subsequent steel plates S at the same time.
In the even-numbered pass, under the control of the controller 24, when the front conveyance table 14 simultaneously conveys two or more subsequent steel plates S, the corrected steel plates S that have passed through the roll straightening machine 12 are received and necessary. Accordingly, the sheet is conveyed in the reverse direction c, stopped at the stop reference position Pa, and one or more preceding steel plates S on the upstream side are stopped at the position at that time, and two or more preceding sheets stopped are stopped. It is preferable to leave a predetermined interval between the steel plates S. On the other hand, when the reduction setting by the controller 24 is the same, the front conveyance table 14 conveys two or more subsequent steel plates S simultaneously without stopping the corrected steel plates S at the stop reference position Pa. You can continue to do.
一方、後面搬送テーブル16は、複数、図示例では10本のテーブルローラ30からなり、基本的に、前面搬送テーブル14と基本的に同様の構成及び機能を有するもので、コントローラ24の制御の下、矯正済鋼板Sを搬送方向aに搬送して、停止させ、また、矯正済鋼板Sを逆方向cに搬送して、停止させたりするためのものである。
後面搬送テーブル16は、一組をなす複数の鋼板Sを、奇数パス目で、1枚ずつ順次ロール矯正機12から受け取り、全ての鋼板Sを受け取った後に、偶数パス目で、1枚ずつ順次全てのロール矯正機12に送り込む。
On the other hand, the rear conveyance table 16 is composed of a plurality of, in the illustrated example, ten table rollers 30, and basically has the same configuration and functions as the front conveyance table 14, and is controlled under the control of the controller 24. The straightened steel sheet S is transported in the transport direction a and stopped, and the straightened steel sheet S is transported in the reverse direction c and stopped.
The rear transfer table 16 sequentially receives a set of a plurality of steel plates S from the roll straightening machine 12 one by one in the odd-numbered pass, and sequentially receives all the steel plates S one by one in the even-numbered pass. Feed to all roll straightening machines 12.
具体的には、後面搬送テーブル16は、例えば、コントローラ24の制御の下、最初のパス、又は、奇数パス目においては、ロール矯正機12で矯正され、ロール矯正機12を抜けた先行の鋼板Sを受け取り、先行の鋼板Sと後行の鋼板はSで、コントローラ24による圧下設定が異なる場合には、必要に応じて、搬送方向aに搬送して、受け取った先行の鋼板Sを一時停止させる際の基準となる停止基準位置Pbに停止させ、後行の鋼板Sがロール矯正機12で矯正されている間、その位置に停止させておく。ここで、停止基準位置Pbは、奇数パス目においてロール矯正機12を抜けた矯正済鋼板Sを一時停止させる際に、前述の矯正済鋼板Sの上流側端部が停止する位置であり、後面搬送テーブル16上の、ロール矯正機12に近接した所定の位置であると共に、偶数パス目において、ロール矯正機12に送り込む前に、鋼板Sを停止させる際に、その上流側端部が停止する位置でもある。
また、後面搬送テーブル16は、同様に、圧下設定が異なる場合には、コントローラ24の制御の下、奇数パス目において、後行の鋼板Sbがロール矯正機12を抜ける前に、停止基準位置Pbに停止していた先行の鋼板Saを搬送方向aに搬送して、衝突しないように、所定の間隔を空けて、ロール矯正機12を抜けた後行の鋼板Sbを受け取り、同様に、停止基準位置Pbに停止させておき、一組をなす全ての鋼板Sを受け取るまで、順次矯正済鋼板Sの停止基準位置Pbへの停止及び搬送を繰り返す。こうして、後面搬送テーブル16は、2枚以上の鋼板Sを、同時に搬送し、それぞれ所定の間隔を空けて停止させる。
Specifically, the rear conveyance table 16 is, for example, a preceding steel plate that has been corrected by the roll straightening machine 12 and passed through the roll straightening machine 12 in the first pass or the odd pass under the control of the controller 24. S is received, and the preceding steel plate S and the succeeding steel plate are S, and when the reduction setting by the controller 24 is different, if necessary, the steel plate is transported in the transport direction a and the received preceding steel plate S is temporarily stopped. It is stopped at the stop reference position Pb which is a reference when the sheet is moved, and is stopped at that position while the succeeding steel sheet S is being corrected by the roll straightening machine 12. Here, the stop reference position Pb is a position where the upstream end of the corrected steel sheet S stops when the corrected steel sheet S that has passed through the roll straightening machine 12 is temporarily stopped in the odd-numbered pass. When the steel sheet S is stopped before being fed into the roll straightening machine 12 in the even-numbered path, the upstream end thereof is stopped at a predetermined position on the transport table 16 close to the roll straightening machine 12. It is also a position.
Similarly, in the case where the reduction setting is different, the rear transfer table 16 has a stop reference position Pb before the succeeding steel plate Sb exits the roll straightening machine 12 in the odd-numbered pass under the control of the controller 24. The preceding steel plate Sa that has been stopped at the time is transported in the transport direction a, and the subsequent steel plate Sb that has passed through the roll straightening machine 12 is received at a predetermined interval so as not to collide. It stops at the position Pb, and the stop and the conveyance to the stop reference position Pb of the corrected steel plate S are sequentially repeated until all the steel plates S forming a set are received. In this way, the rear conveyance table 16 conveys two or more steel plates S at the same time, and stops them at predetermined intervals.
また、後面搬送テーブル16は、同様に、圧下設定が異なる場合には、コントローラ24の制御の下、一組をなす全ての鋼板Sを受け取った後に、偶数パス目で、停止基準位置Pbに停止している矯正済鋼板Sを、その圧下率を設定後、逆方向cに搬送して、ロール矯正機12に送り込むと共に、送り込まれた矯正済鋼板Sが再度矯正されている間に、後続の全ての矯正済鋼板Sをさらに逆方向cに搬送して、次の矯正済鋼板Sの上流側端部が停止基準位置Pbに来たときに、後続の全ての矯正済鋼板Sをその位置で所定の間隔を空けて停止させる。
後面搬送テーブル16は、圧下設定が異なる場合には、コントローラ24の制御の下、一組をなす全ての矯正済鋼板Sがロール矯正機12に送り込まれるまで、1枚ずつ順次矯正済鋼板Sのロール矯正機12への送り込み、並びに後続の矯正済鋼板Sの逆方向cへの搬送及び停止基準位置Pbや所定間隔を空けた位置への停止を繰り返す。
なお、上述したように、先行の鋼板Sと後行の鋼板はSで、コントローラ24による圧下設定が異なる場合には、後面搬送テーブル16は、奇数パス目においてロール矯正機12を抜けた矯正済鋼板S、及び、偶数パス目においてロール矯正機12に送り込む前の鋼板Sを停止基準位置Pbに停止させるが、圧下設定が同一である場合には、後面搬送テーブル16は、奇数パス目においても、偶数パス目においても、鋼板Sを、停止基準位置Pbに停止させることなく、そのまま搬送させるのが良い。
なお、奇数パス目で矯正が完了した場合には、それに続く偶数パス目を省略することができる。この場合、鋼板Sは、後面搬送テーブル16上から、図示しないクレーンなどにより移動され、あるいは、さらに下流へ搬送される。
また、前面搬送テーブル14及び後面搬送テーブル16において、前後2枚の鋼板Sの間に空ける所定の間隔は、停止する時や搬送が開始された時に、前後2枚の鋼板Sが衝突しない間隔であれば、どのような間隔でも良いが、例えば1mや1.5mであれば良い。
Similarly, when the reduction setting is different, the rear transfer table 16 stops at the stop reference position Pb in the even-numbered pass after receiving all the steel plates S forming a set under the control of the controller 24. The straightened steel sheet S that has been set is transported in the reverse direction c after setting the rolling reduction ratio, and sent to the roll straightening machine 12, while the straightened steel sheet S that has been fed is being straightened again, When all the corrected steel plates S are further conveyed in the reverse direction c and the upstream end of the next corrected steel plate S comes to the stop reference position Pb, all the subsequent corrected steel plates S are moved at that position. Stop at a predetermined interval.
When the reduction setting is different, the rear transfer table 16 is controlled by the controller 24 until the set of all the corrected steel sheets S are fed to the roll straightening machine 12 one by one. The feeding to the roll straightening machine 12, the subsequent conveyance of the straightened steel sheet S in the reverse direction c, and the stop at the stop reference position Pb or a position with a predetermined interval are repeated.
Note that, as described above, when the preceding steel plate S and the succeeding steel plate are S and the reduction setting by the controller 24 is different, the rear conveyance table 16 has been corrected through the roll straightening machine 12 in the odd-numbered pass. The steel plate S and the steel plate S before being fed into the roll straightening machine 12 in the even-numbered pass are stopped at the stop reference position Pb. However, when the reduction setting is the same, the rear conveyance table 16 is also used in the odd-numbered pass. Even in the even-numbered pass, the steel plate S is preferably conveyed as it is without stopping at the stop reference position Pb.
When correction is completed in the odd-numbered pass, the subsequent even-numbered pass can be omitted. In this case, the steel sheet S is moved from the rear conveyance table 16 by a crane (not shown) or is further conveyed downstream.
Moreover, in the front conveyance table 14 and the rear conveyance table 16, the predetermined space | interval which vacates between the front and back two steel plates S is a space | interval which the front and back two steel plates S do not collide when stopping or conveyance is started. Any interval may be used as long as it is present, but it may be, for example, 1 m or 1.5 m.
前面停止位置基準センサ18は、鋼板Sの下流側端部(先端)が一時停止する際の基準となる位置である停止基準位置Paに来たことを検出するための位置センサであり、前面搬送テーブル14上の停止基準位置Paに設置される。後面停止位置基準センサ20は、鋼板Sの上流側端部(後端)が一時停止する際の基準となる位置である停止基準位置Pbに来たことを検出するための位置センサであり、後面搬送テーブル16上の停止基準位置Pbに設置される。
なお、前面停止位置基準センサ18及び後面停止位置基準センサ20は、鋼板Sの一方の端部がそれぞれ停止基準位置Pa及びPbに来たことを検出できればどのようなものでも良いが、例えば、発光受光素子からなるフォトインタラプタや光電管等の鋼板Sの光の遮断/通過を検出する光学センサや光電素子を用いたセンサ等が好ましく、例えば、受光状態でオフ、遮光状態でオンとなるセンサ等を用いることができる。前面停止位置基準センサ18及び後面停止位置基準センサ20の検出結果は、コントローラ24に送信され、前面搬送テーブル14及び後面搬送テーブル16における鋼板Sの搬送・停止の制御、並びにロール矯正機12における鋼板Sの矯正・搬送の制御に用いられる。
The front stop position reference sensor 18 is a position sensor for detecting that the downstream end (tip) of the steel sheet S has reached the stop reference position Pa, which is a reference position when the steel plate S is temporarily stopped. It is installed at the stop reference position Pa on the table 14. The rear surface stop position reference sensor 20 is a position sensor for detecting that the upstream end (rear end) of the steel sheet S has reached the stop reference position Pb, which is a reference position when the steel plate S is temporarily stopped. It is installed at the stop reference position Pb on the transport table 16.
The front stop position reference sensor 18 and the rear stop position reference sensor 20 may be anything as long as it can detect that one end of the steel sheet S has reached the stop reference positions Pa and Pb, respectively. An optical sensor that detects light blocking / passing of the light of the steel sheet S such as a photo interrupter or a photoelectric tube made of a light receiving element, a sensor using a photoelectric element, etc. are preferable. Can be used. The detection results of the front stop position reference sensor 18 and the rear stop position reference sensor 20 are transmitted to the controller 24 to control the conveyance / stop of the steel sheet S in the front conveyance table 14 and the rear conveyance table 16, and the steel sheet in the roll straightening machine 12. Used for S correction / conveyance control.
また、前面停止位置基準センサ18と後面停止位置基準センサ20の個数及びその設置位置も、搬送される種々の鋼板Sを全て検知することができる個数や位置であれば特に制限的ではなく、例えば停止基準位置Pa及びPbにおいてパスラインbと直交する鋼板Sの幅方向の中心に1個設置するのが好ましいが、中心に限定されず、その幅方向の1直線上のどの位置に設置しても良いし、その幅方向の1直線に沿って複数個設置しても良い。また、前面停止位置基準センサ18において、鋼板Sの位置、即ち下流側端部及び上流側端部の位置が検出(検知)された後、鋼板Sの搬送及び停止は、搬送速度も含めてコントローラ24で制御されるので、後面搬送テーブル16上における鋼板Sの停止位置、停止基準位置Pbに停止している鋼板Sの上流側端部の位置を算出することができる。このため、後面停止位置基準センサ20は設置しなくても良いが、位置検出の精度や、前面搬送テーブル14、後面搬送テーブル16及びロール矯正機12等の搬送設備等の搬送不良やトラブル等の観点から設置した方が好ましい。   Further, the number of front stop position reference sensors 18 and the rear stop position reference sensors 20 and their installation positions are not particularly limited as long as they can detect all the various steel plates S being conveyed. Although it is preferable to install one piece at the center in the width direction of the steel sheet S orthogonal to the pass line b at the stop reference positions Pa and Pb, the position is not limited to the center, and it is installed at any position on one straight line in the width direction. Alternatively, a plurality may be provided along one straight line in the width direction. In addition, after the front stop position reference sensor 18 detects (detects) the position of the steel sheet S, that is, the positions of the downstream end and the upstream end, the transport and stop of the steel sheet S including the transport speed are performed by the controller. 24, the stop position of the steel sheet S on the rear conveyance table 16 and the position of the upstream end of the steel sheet S stopped at the stop reference position Pb can be calculated. For this reason, the rear surface stop position reference sensor 20 does not need to be installed, but the position detection accuracy, the conveyance failure such as the front conveyance table 14, the rear conveyance table 16, and the roll correction machine 12, etc., troubles, etc. It is preferable to install from the viewpoint.
板厚測定器22は、前面搬送テーブル14に設置され、矯正する前に矯正対象の鋼板Sの板厚を測定し、コントローラ24において、予め上位計算機(図示せず)から送られてきている矯正対象の各鋼板Sの板厚情報と一致するか否かのを確認し、測定された板厚と予め送られてきている板厚情報とが異なる場合に、板厚情報に基づいて圧下設定されたロール矯正機12に、特に、上矯正ロール26a〜26dと下矯正ロール28a〜28eとの間に異常噛込みを発生させたり、設備損傷等が発生したりすることを事前に回避し、防止するためのものである。
本発明では、板厚測定器22は、鋼板Sの板厚が概略測定できれば、どのようなものでも良く、特に制限はないが、図示例のように、上下に複数のレーザ距離計等からなる平坦度計22a,22bの一部を板厚測定器22と兼用としても良い。
The plate thickness measuring device 22 is installed on the front transfer table 14 and measures the plate thickness of the steel plate S to be corrected before correction. The correction is sent in advance from the host computer (not shown) in the controller 24. It is checked whether or not it matches the plate thickness information of each target steel plate S, and when the measured plate thickness is different from the plate thickness information sent in advance, the reduction is set based on the plate thickness information. In particular, the roll straightening machine 12 avoids in advance and prevents the occurrence of abnormal biting between the upper straightening rolls 26a to 26d and the lower straightening rolls 28a to 28e or the occurrence of equipment damage. Is to do.
In the present invention, the plate thickness measuring device 22 may be anything as long as the plate thickness of the steel plate S can be roughly measured, and is not particularly limited. However, as shown in the illustrated example, the plate thickness measuring device 22 includes a plurality of laser distance meters and the like. A part of the flatness meters 22a and 22b may be shared with the plate thickness measuring device 22.
なお、ここでは、各パスでの矯正実績を把握するために、レーザ距離計を、搬送方向aと直交する鋼板Sの板幅方向に必要数だけ複数個略等間隔に配置した平坦度計22a及び22bが、それぞれ鋼板Sの搬送路の表面側及び裏面側に設置されており、それぞれ鋼板Sの表面及び裏面の平坦度を計測している。平坦度計22a,22bは、それぞれ複数のレーザ距離計から射出され、それぞれ鋼板Sの表面及び裏面で反射されたレーザ光で測定することにより、平坦度計22a,22bと鋼板Sの表面、裏面との距離を測定し、反射面である鋼板Sの表面及び裏面の平坦度を計測することができるものである。これらの平坦度計22a,22bは、それぞれ鋼板Sの幅方向の同一の1直線に沿って複数個設置するのが好ましい。   Here, in order to grasp the correction results in each pass, a flatness meter 22a in which a plurality of laser distance meters are arranged at substantially equal intervals in the plate width direction of the steel plate S orthogonal to the transport direction a. And 22b are respectively installed on the front surface side and the back surface side of the conveying path of the steel sheet S, and measure the flatness of the front surface and the back surface of the steel sheet S, respectively. The flatness meters 22a and 22b are respectively emitted from a plurality of laser distance meters, and measured by laser beams reflected on the front and back surfaces of the steel plate S, respectively, so that the flatness meters 22a and 22b and the front and back surfaces of the steel plate S are measured. , And the flatness of the front and back surfaces of the steel sheet S, which is a reflection surface, can be measured. It is preferable to install a plurality of these flatness meters 22a and 22b along the same straight line in the width direction of the steel sheet S.
そこで、本発明では、これらの平坦度計22a,22bを構成するレーザ距離計の中のいくつかのレーザ距離計を、互いに鋼板Sの表面側と裏面側で対応させて配置し、板厚測定器22として兼用することができる。
例えば、鋼板Sの裏側の平坦度計22bで鋼板Sの平坦度を計測する場合には、平坦度計22bを構成するレーザ距離計は、平坦度の計測に必要な個数を設置するのがよい。また、例えば、鋼板Sの表側の平坦度計22aを鋼板Sの板厚を測定するために板厚測定器22として兼用する場合には、平坦度計22aを構成するレーザ距離計の個数は平坦度計22bを構成するレーザ距離計の個数より少なくても良いが、設置する位置は、平坦度計22bを構成するレーザ距離計の設置位置に対応する位置とするのが好ましい。
Therefore, in the present invention, several laser distance meters in the laser distance meters constituting these flatness meters 22a and 22b are arranged in correspondence with each other on the front surface side and the back surface side of the steel sheet S, thereby measuring the plate thickness. It can also be used as the container 22.
For example, when the flatness of the steel plate S is measured by the flatness meter 22b on the back side of the steel plate S, the laser distance meters constituting the flatness meter 22b should be installed in the number necessary for measuring the flatness. . For example, when the flatness meter 22a on the front side of the steel plate S is also used as the plate thickness measuring device 22 for measuring the thickness of the steel plate S, the number of laser distance meters constituting the flatness meter 22a is flat. Although the number may be smaller than the number of laser distance meters constituting the dynamometer 22b, the position to be installed is preferably a position corresponding to the installation position of the laser distance meters constituting the flatness meter 22b.
なお、板厚測定器22は必ずしも設ける必要はないが、図示しないクレーン等によって、鋼板Sを前面搬送テーブル14上に載置する際に、誤って、2枚の鋼板Sを重ねて載置したり、異なる板厚の鋼板Sを載置したり、載置する順序を間違えて載置したりすることは起こり得るので、異常噛込みや設備損傷等の発生防止などの安全性の面から設置した方が好ましい。なお、平坦度計22a,22bによる鋼板Sの表裏面の平坦度測定と板厚測定器22による鋼板Sの板厚測定は、鋼板の搬送中に連続的に実行される。   Although the plate thickness measuring device 22 is not necessarily provided, when the steel plate S is placed on the front transfer table 14 by a crane or the like (not shown), the two steel plates S are mistakenly placed. It is possible to place the steel plates S with different thicknesses or to place them in the wrong order, so it is installed from the viewpoint of safety such as prevention of abnormal biting and equipment damage. Is preferable. In addition, the flatness measurement of the front and back surfaces of the steel sheet S by the flatness meters 22a and 22b and the thickness measurement of the steel sheet S by the plate thickness measuring device 22 are continuously executed during conveyance of the steel sheets.
そして、この実施形態においては、上記のように構成されたロール矯正設備10を用いて、複数の鋼板Sを一組にして往復搬送しながら複数パスで矯正しているが、その際に、コントローラ24は、上記計算機から送られてきた各鋼板Sの板厚情報等や、前面及び後面の停止位置基準センサ18及び20の検知結果を受け取り、これらの情報や検知結果に基づいて、ロール矯正機12、前面搬送テーブル14及び後面搬送テーブル16における各鋼板Sの搬送を制御するものである。なお、コントローラ24は、このような制御ができれば、どのような制御装置であっても良い。
本発明に係る鋼板の連続矯正装置(ロール矯正設備)は、基本的に以上のように構成される。
In this embodiment, the roll straightening equipment 10 configured as described above is used to correct a plurality of passes while reciprocating and transporting a plurality of steel plates S as a set. 24 receives the sheet thickness information of each steel sheet S sent from the computer and the detection results of the front and rear stop position reference sensors 18 and 20, and based on these information and detection results, roll corrector 12, the conveyance of each steel plate S in the front conveyance table 14 and the rear conveyance table 16 is controlled. The controller 24 may be any control device as long as such control is possible.
The steel sheet continuous straightening apparatus (roll straightening equipment) according to the present invention is basically configured as described above.
以下に、図2及び図3を参照して、本発明の鋼板の連続矯正方法について説明する。
図2は、本発明の鋼板の連続矯正方法の最初のパス、1パス目の矯正手順の一実施例を示すフローチャートであり、図3(a)〜(e)は、図1に示す鋼板の連続矯正装置(ロール矯正設備)における鋼板の搬送及び矯正の順序を模式的に示す断面図である。
なお、ここでは、代表例として、2枚の鋼板Sa、Sbを一組とした場合について説明する。なお、ロール矯正設備10には、鋼板Sa、鋼板Sbの順で搬送されてきたものとしている。したがって、奇数パス目(上流側から下流側に向かうパス)では、鋼板Saが先行材、鋼板Sbが後行材となり、偶数パス目(下流側から上流側に向かうパス)では、鋼板Sbが先行材、鋼板Saが後行材となる。
Below, with reference to FIG.2 and FIG.3, the continuous correction method of the steel plate of this invention is demonstrated.
FIG. 2 is a flowchart showing an embodiment of the first pass and the first pass correction procedure of the steel sheet continuous straightening method of the present invention, and FIGS. 3 (a) to 3 (e) are drawings of the steel plate shown in FIG. It is sectional drawing which shows typically the order of conveyance and correction of the steel plate in a continuous straightening apparatus (roll straightening equipment).
Here, as a representative example, a case where two steel plates Sa and Sb are set as one set will be described. It is assumed that the steel sheet Sa and the steel sheet Sb have been conveyed to the roll straightening equipment 10 in this order. Therefore, in the odd-numbered pass (pass from the upstream side to the downstream side), the steel plate Sa is the leading material and the steel plate Sb is the trailing material, and in the even-numbered pass (the path from the downstream side to the upstream side), the steel plate Sb is the leading material. The material, the steel plate Sa, becomes the succeeding material.
まず、ステップS10において、前面搬送テーブル14の入り側付近に設置された図示しないクレーン等を使用して、図3(a)に示すように、前面搬送テーブル14上に鋼板Saを載置し、前面搬送テーブル14を駆動してテーブルローラ30を回転駆動させて鋼板Sを搬送し前進させて停止させる。続いて、同様にして、鋼板Sbを所定間隔を開けて前面搬送テーブル14上に載置して前面搬送テーブル14を駆動して2つの鋼板Sa及びSbを同時に搬送開始させる。この時、圧下設定に要する時間を極力短縮するために、鋼板Saの板厚に対してできるだけ近い板厚を有する鋼板Sbを組み合わせる。
ステップS12において、板厚測定器22によって搬送中の鋼板Saの板厚を測定し、上位計算機(図示せず)から送られてきた鋼板Saの板厚情報と一致していることを確認する。ここで、搬送中の鋼板Saの測定板厚と鋼板Saの板厚情報との一致確認は、後述するステップS14の鋼板Saの一時停止中に行われても良い。なお、偶数パス目では、鋼板Saと鋼板Sbの搬送方向が逆転するので、本ステップは不要である。
First, in step S10, using a crane or the like (not shown) installed near the entrance side of the front transfer table 14, as shown in FIG. 3A, the steel plate Sa is placed on the front transfer table 14, The front conveying table 14 is driven to rotate the table roller 30, and the steel sheet S is conveyed and advanced to stop. Subsequently, similarly, the steel plate Sb is placed on the front transfer table 14 at a predetermined interval, and the front transfer table 14 is driven to start the transfer of the two steel plates Sa and Sb simultaneously. At this time, in order to shorten the time required for the reduction setting as much as possible, a steel plate Sb having a plate thickness as close as possible to the plate thickness of the steel plate Sa is combined.
In step S12, the plate thickness measuring device 22 measures the plate thickness of the steel plate Sa being conveyed, and confirms that it matches the plate thickness information of the steel plate Sa sent from the host computer (not shown). Here, the coincidence confirmation between the measured plate thickness of the steel plate Sa being conveyed and the plate thickness information of the steel plate Sa may be performed during a temporary stop of the steel plate Sa in step S14 described later. In the even-numbered pass, the transport direction of the steel plate Sa and the steel plate Sb is reversed, so this step is unnecessary.
次に、ステップS14において、鋼板Saの下流側端部(先端部)が通過して前面停止位置基準センサ18がオン(ON)となり、鋼板Saの先端部を検出したら、図3(b)に示すように、鋼板Saと鋼板Sbをそれぞれの位置で一時停止させる。ここで、鋼板Saは、停止基準位置Paで停止する。
次に、ステップS16において、停止中に、鋼板Saに対するロール矯正機12の圧下設定を行う。次いで、圧下設定が完了したら、ステップS18において、前面搬送テーブル14を駆動して鋼板Saと鋼板Sbを同時に搬送し、鋼板Saをロール矯正機12に送り込み、鋼板Saの1パス目の矯正を行う。なお、既に、停止基準位置Paでの鋼板Saの停止時点で、鋼板Saに対するロール矯正機12の圧下設定が完了している場合には、停止後直ちに、若しくは停止せずにそのまま、連続して鋼板Saをロール矯正機12に送り込んでも良い。
Next, in step S14, when the downstream end portion (tip portion) of the steel plate Sa passes and the front stop position reference sensor 18 is turned on (ON), and the tip portion of the steel plate Sa is detected, FIG. As shown, the steel plate Sa and the steel plate Sb are temporarily stopped at the respective positions. Here, the steel plate Sa stops at the stop reference position Pa.
Next, in step S <b> 16, the roll straightening machine 12 is set to be pressed with respect to the steel sheet Sa during the stop. Next, when the reduction setting is completed, in step S18, the front conveyance table 14 is driven to convey the steel plate Sa and the steel plate Sb at the same time, and the steel plate Sa is fed to the roll straightening machine 12 to correct the first pass of the steel plate Sa. . In addition, when the reduction setting of the roll straightening machine 12 with respect to the steel plate Sa has already been completed at the time of stopping the steel plate Sa at the stop reference position Pa, it is continuously performed immediately after the stop or without stopping. The steel plate Sa may be fed into the roll straightening machine 12.
次に、ステップS20において、前面搬送テーブル14を駆動して、鋼板Saをロール矯正機12に送り込むのと同時に、鋼板Sbを搬送して前進させ、搬送中の鋼板Sbの板厚を板厚測定器22によって測定し、上位計算機(図示せず)から送られてきた鋼板Sbの板厚情報と一致していることを確認する。ここで、搬送中の鋼板Sbの測定板厚と鋼板Sbの板厚情報との一致確認は、後述するステップS22の鋼板Sbの一時停止中に行われても良い。なお、偶数パス目では、鋼板Saと鋼板Sbの搬送方向が逆転するので、本ステップは不要である。
次に、ステップS21において、先行の鋼板Saと後行の鋼板はSbとで、コントローラ24による圧下設定が同一であるか否かの判定を行う。
判定の結果、コントローラ24による圧下設定が同一である場合には、ステップS20の板厚測定に引き続き、前面搬送テーブル14が駆動されて鋼板Sbが前進された結果、鋼板Sbの先端部が通過して前面停止位置基準センサ18がオン(ON)となり、鋼板Sbの先端部が検出されても、前面搬送テーブル14は、鋼板Sbを停止基準位置Paに停止させることなく連続して搬送して、後述するステップS28に移行し、鋼板Sbをロール矯正機12に送り込む。
一方、判定の結果、コントローラ24による圧下設定が異なる場合には、ステップS22に移行する。
次に、ステップS22においては、ステップS20の板厚測定に引き続き、前面搬送テーブル14が駆動されて鋼板Sbが前進された結果、鋼板Sbの先端部が通過して前面停止位置基準センサ18がオン(ON)となり、鋼板Sbの先端部を検出したら、図3(c)に示すように、鋼板Sbをその位置で一時停止させる。ここで、鋼板Sbは、停止基準位置Paで停止する。
Next, in step S20, the front transport table 14 is driven to feed the steel plate Sa to the roll straightening machine 12, and at the same time, the steel plate Sb is transported and advanced, and the thickness of the steel plate Sb being transported is measured. It is measured by the instrument 22 and it is confirmed that it matches the plate thickness information of the steel plate Sb sent from the host computer (not shown). Here, the coincidence confirmation between the measured plate thickness of the steel plate Sb being conveyed and the plate thickness information of the steel plate Sb may be performed during a temporary stop of the steel plate Sb in step S22 described later. In the even-numbered pass, the transport direction of the steel plate Sa and the steel plate Sb is reversed, so this step is unnecessary.
Next, in step S21, it is determined whether the rolling reduction setting by the controller 24 is the same for the preceding steel plate Sa and the subsequent steel plate Sb.
If the reduction setting by the controller 24 is the same as a result of the determination, following the plate thickness measurement in step S20, the front conveyance table 14 is driven and the steel plate Sb is advanced, so that the tip of the steel plate Sb passes. Even if the front stop position reference sensor 18 is turned on (ON) and the front end portion of the steel plate Sb is detected, the front transfer table 14 continuously conveys the steel plate Sb without stopping at the stop reference position Pa. The process proceeds to step S28 described later, and the steel plate Sb is fed into the roll straightening machine 12.
On the other hand, as a result of the determination, if the reduction setting by the controller 24 is different, the process proceeds to step S22.
Next, in step S22, following the plate thickness measurement in step S20, the front conveyance table 14 is driven and the steel plate Sb is advanced. As a result, the front end portion of the steel plate Sb passes and the front stop position reference sensor 18 is turned on. (ON) When the tip of the steel plate Sb is detected, the steel plate Sb is temporarily stopped at that position as shown in FIG. Here, the steel plate Sb stops at the stop reference position Pa.
次いで、ステップS24において、ロール矯正機12を抜け、後面搬送テーブル3上に移動された鋼板Saは、後面搬送テーブル16の駆動によって搬送方向aに搬送される。その後、鋼板Saの上流側端部(後端部)が通過して後面停止位置基準センサ20がオフ(OFF)となり、鋼板Saの後端部を検出したら、図3(d)に示すように、鋼板Saをその位置、即ち停止基準位置Pbで一時停止させる。
次に、ステップS26において、鋼板Sの停止中に、鋼板Sbに対するロール矯正機12の圧下設定を行う。次いで、圧下設定が完了したら、ステップS28に移行する。
次に、鋼板Sbの圧下設定が鋼板Saと同一である場合や、鋼板Sbの圧下設定が完了している場合には、ステップS28において、前面搬送テーブル14を駆動して鋼板Sbを搬送し、鋼板Sbをロール矯正機12に送り込み、鋼板Sbの1パス目の矯正を行う。即ち、鋼板Sbの圧下設定が鋼板Saと異なり、既に、停止基準位置Paでの鋼板Sbの停止時点で、鋼板Sbに対するロール矯正機12の圧下設定が完了している場合には、停止後直ちに、若しくは停止せずにそのまま、連続して鋼板Sbをロール矯正機12に送り込んでも良い。
なお、上述したように、先行の鋼板Saと後行の鋼板はSbとで、コントローラ24による圧下設定が同一である場合には、前面停止位置基準センサ18で鋼板Sbの先端部が検知された場合であっても、前面搬送テーブル14は、鋼板Sbを停止基準位置Paに停止させることなく連続して搬送するので、ステップS28において、鋼板Sbをロール矯正機12に送り込み、鋼板Sbの矯正を、鋼板Saの矯正に連続して行う。このため、先行して矯正される鋼板Saがロール矯正機12を抜け、後面搬送テーブル3上に移動されて、後面搬送テーブル3によって搬送され、後面停止位置基準センサ20によって鋼板Sbの後端部が検出されても、後面搬送テーブル3は、鋼板Saを停止基準位置Pbで停止させること無く搬送するのが良い。
Next, in step S <b> 24, the steel plate Sa that has passed through the roll straightening machine 12 and moved onto the rear conveyance table 3 is conveyed in the conveyance direction a by driving the rear conveyance table 16. Thereafter, when the upstream end (rear end) of the steel plate Sa passes and the rear surface stop position reference sensor 20 is turned off (OFF) and the rear end of the steel plate Sa is detected, as shown in FIG. The steel plate Sa is temporarily stopped at the position, that is, the stop reference position Pb.
Next, in step S26, while the steel sheet S is stopped, the roll straightening machine 12 is set to be reduced with respect to the steel sheet Sb. Next, when the reduction setting is completed, the process proceeds to step S28.
Next, when the reduction setting of the steel plate Sb is the same as that of the steel plate Sa, or when the reduction setting of the steel plate Sb is completed, in step S28, the front conveyance table 14 is driven to convey the steel plate Sb. The steel plate Sb is fed into the roll straightening machine 12 to correct the first pass of the steel plate Sb. That is, when the rolling setting of the steel sheet Sb is different from that of the steel sheet Sa, and the rolling setting of the roll straightening machine 12 with respect to the steel sheet Sb has already been completed when the steel sheet Sb is stopped at the stop reference position Pa, immediately after the stop. Alternatively, the steel sheet Sb may be continuously fed to the roll straightening machine 12 without stopping.
As described above, when the rolling reduction setting by the controller 24 is the same for the preceding steel plate Sa and the subsequent steel plate Sb, the front end position of the steel plate Sb is detected by the front stop position reference sensor 18. Even in this case, the front conveyance table 14 continuously conveys the steel plate Sb without stopping at the stop reference position Pa. Therefore, in step S28, the steel plate Sb is fed into the roll straightening machine 12 to correct the steel plate Sb. Then, it is continuously performed for the correction of the steel plate Sa. For this reason, the steel plate Sa to be corrected in advance passes through the roll straightening machine 12, is moved onto the rear conveyance table 3, is conveyed by the rear conveyance table 3, and the rear end portion of the steel plate Sb by the rear surface stop position reference sensor 20. Even if is detected, the rear surface transport table 3 may transport the steel plate Sa without stopping at the stop reference position Pb.
そして、ステップS28に続くステップS30において、圧下設定が同一である場合には、例えば、鋼板Sbがロール矯正機12で矯正されている間も、鋼板Saを後面搬送テーブル16で下流側に搬送し続け、圧下設定が異なる場合には、ロール矯正機12で矯正されている鋼板Sbが鋼板Saに所定間隔、例えば1.0mまで近づいてきたら、後面搬送テーブル16を駆動して鋼板Saをさらに下流側に搬送すると共に、ロール矯正機12を抜け、後面搬送テーブル3上に移動された鋼板Sbは、搬送方向aに搬送される。その後、鋼板Sbの後端部が通過して後面停止位置基準センサ20がオフ(OFF)となり、鋼板Sbの後端部を検出した時点で、図3(e)に示すように、鋼板Sa及び鋼板Sbをそれぞれの位置で一時停止させる。即ち、鋼板Sa及び鋼板Sbは、ロール矯正機12に対して後面停止位置基準センサ20の外側にそれぞれ一時停止する。これによって、1パス目の矯正が終了となる。   In step S30 following step S28, if the reduction setting is the same, for example, the steel plate Sa is conveyed downstream by the rear conveyance table 16 while the steel plate Sb is being corrected by the roll straightening machine 12. If the reduction setting is different, when the steel plate Sb straightened by the roll straightening machine 12 approaches the steel plate Sa to a predetermined interval, for example, 1.0 m, the rear transport table 16 is driven to move the steel plate Sa further downstream. The steel plate Sb that has been transported to the side and passed through the roll straightening machine 12 and moved onto the rear transport table 3 is transported in the transport direction a. Thereafter, when the rear end portion of the steel plate Sb passes and the rear surface stop position reference sensor 20 is turned off (OFF) and the rear end portion of the steel plate Sb is detected, as shown in FIG. The steel plate Sb is temporarily stopped at each position. That is, the steel plate Sa and the steel plate Sb are temporarily stopped outside the rear surface stop position reference sensor 20 with respect to the roll straightening machine 12. As a result, the correction for the first pass is completed.
なお、図3(e)に示す鋼板Sa及び鋼板Sbは、ステップS10を説明するための図3(a)に示す鋼板Sb及び鋼板Saと、それぞれロール矯正機12に対する後面及び前面停止位置基準センサ20及び18の外側にそれぞれ停止している点では同様である。
したがって、2パス目の鋼板Sb及び鋼板Saの矯正は、上述した1パス目のステップS10〜S30の各手順に基づいて行えば良いので、詳細な説明は省略する。しかし、2パス目の鋼板Sb及び鋼板Saの搬送方向は、1パス目の鋼板Saと鋼板Sbの搬送方向aと逆転し、その逆方向cとなり、鋼板Sbが先行材、鋼板Saが後行材となるので、各ステップの説明において、鋼板Saと鋼板Sbとを互いに入れ替え、また、前面搬送テーブル14と後面搬送テーブル16とを互いに入れ替え、前面停止位置基準センサ18と後面停止位置基準センサ20とを互いに入れ替える必要がある。
The steel plate Sa and the steel plate Sb shown in FIG. 3 (e) are the steel plate Sb and the steel plate Sa shown in FIG. 3 (a) for explaining step S10, and the rear and front stop position reference sensors for the roll straightening machine 12, respectively. It is the same in that it stops outside 20 and 18, respectively.
Accordingly, the correction of the steel plate Sb and the steel plate Sa in the second pass may be performed based on the procedures of steps S10 to S30 in the first pass described above, and detailed description thereof is omitted. However, the conveyance direction of the steel plate Sb and the steel plate Sa in the second pass is reversed to the conveyance direction a of the steel plate Sa and the steel plate Sb in the first pass and becomes the opposite direction c. The steel plate Sb is the preceding material and the steel plate Sa is the following. In the description of each step, the steel plate Sa and the steel plate Sb are interchanged with each other, and the front conveyance table 14 and the rear conveyance table 16 are interchanged with each other, and the front stop position reference sensor 18 and the rear stop position reference sensor 20 are replaced. Must be replaced with each other.
なお、3パス目以降の矯正が繰り返される場合には、奇数パス目の矯正を、1パス目のステップS10〜S30の各手順に基づいて、偶数パス目の矯正を2パス目の矯正の各ステップの各手順に基づいて行えば良い。
そして、予め設定された回数の往復パスが終了すると、再び前面搬送テーブル14付近に設置されたクレーン(図示せず)等を使用して、鋼板Sa、鋼板Sbが前面搬送テーブル14上から移動され、次工程に供される。ここで、奇数パス目で矯正が完了した場合には、それに続く偶数パス目を省略することができる。この場合、鋼板Sは、後面搬送テーブル16上から、図示しないクレーンなどにより移動され、あるいは、さらに下流へ搬送される。
In addition, when the correction after the third pass is repeated, the correction of the odd-numbered pass is performed based on each procedure of steps S10 to S30 of the first pass, and the correction of the even-numbered pass is changed to each of the correction of the second pass. What is necessary is just to perform based on each procedure of a step.
When the preset number of round-trip passes is completed, the steel plate Sa and the steel plate Sb are moved from the front conveyance table 14 again using a crane (not shown) or the like installed near the front conveyance table 14 again. To be used in the next step. Here, when the correction is completed in the odd-numbered pass, the subsequent even-numbered pass can be omitted. In this case, the steel sheet S is moved from the rear conveyance table 16 by a crane (not shown) or is further conveyed downstream.
なお、図2に示す鋼板の連続矯正方法では、ステップS21において、先行の鋼板Saと後行の鋼板はSbとで、コントローラ24による圧下設定が同一であるか否かの判定を行い、その判定結果に基づいて、必要なステップを行っているが、本発明はこれに限定されず、予め圧下設定が異なることが既知の1組の鋼板を矯正する場合には、ステップS20に引き続いてステップ22〜30を連続して行って良いし、予め圧下設定が同一であることが既知の1組の鋼板を矯正する場合には、ステップS20に引き続いてステップ28〜30を連続して行って良い。   In the continuous correction method for a steel plate shown in FIG. 2, in step S21, it is determined whether the rolling reduction setting by the controller 24 is the same between the preceding steel plate Sa and the subsequent steel plate Sb. Although the necessary steps are performed based on the results, the present invention is not limited to this, and when correcting a set of steel plates known to have different reduction settings in advance, step 22 follows step S20. ˜30 may be performed continuously, or when correcting a set of steel plates whose reduction setting is known to be the same in advance, steps 28-30 may be performed continuously following step S20.
以上が、2枚の鋼板Sa、Sbを一組とした場合の手順であるが、搬送される鋼板Sの長さに対して前面及び後面搬送テーブル14及び16の長さに十分余裕がある場合には、3枚以上の鋼板Sを一組とした場合でも上記と同様の手順によって行えばよい。即ち、一組とする鋼板Sの枚数は、それらの鋼板Sの長さと前面及び後面搬送テーブル14及び16の長さに応じて適宜設定すればよい。
但し、その際に、鋼板Sの板厚が同一でない板厚の差が大きい鋼板が混在している場合には、各鋼板Sのパス回数が同じになるようにロール矯正機12の圧下設定をそれぞれの鋼板について個別に行うか、あるいは、パス回数が少なくてすむ鋼板Sには矯正を行わないパス(空パス)を設けて各鋼板Sのパス回数が同じになるようにしても良い。
The above is the procedure when two steel plates Sa and Sb are combined, but the front and rear transport tables 14 and 16 have a sufficient margin with respect to the length of the steel plate S to be transported. In the case where three or more steel plates S are combined, the same procedure as described above may be used. That is, the number of the steel plates S to be set may be set as appropriate according to the length of the steel plates S and the lengths of the front and rear transport tables 14 and 16.
However, in that case, if there are mixed steel plates with a large difference in plate thickness where the thicknesses of the steel plates S are not the same, the roll straightening machine 12 is set to have the same rolling number so that the number of passes of each steel plate S is the same. It is possible to perform each of the steel plates individually or to provide a pass (empty pass) in which correction is not performed on the steel plate S that requires fewer passes so that the number of passes of each steel plate S is the same.
以上述べたように、この実施形態においては、例えば、2枚の鋼板Sa、Sbを一組にして往復搬送しながらロール矯正機12によって矯正するようにしているので、矯正ピッチ、即ち、鋼板Saの矯正開始から鋼板Sbの矯正開始までの間隔が短縮され、生産性を向上させることができる。特に、先行して矯正される先行の鋼板S(Sa)とその後に続いて矯正される後行の鋼板S(Sb)とのコントローラ24による圧下設定が同一である場合には、圧下設定のために、後行の鋼板S(Sb)を停止基準位置PaやPbで停止させる必要が無く、先行の鋼板S(Sa)と後行の鋼板S(Sb)とを連続して矯正することができるので、矯正ピッチをさらに短縮することができ、生産性をさらに向上させることができる。
本発明の鋼板の連続矯正方法は、基本的に以上のように構成される。
As described above, in this embodiment, for example, the two steel plates Sa and Sb are corrected together by the roll straightening machine 12 while reciprocating and transporting, so that the correction pitch, that is, the steel plate Sa. The interval from the start of straightening to the start of straightening of the steel sheet Sb is shortened, and productivity can be improved. In particular, when the rolling reduction setting by the controller 24 is the same for the preceding steel plate S (Sa) to be corrected in advance and the subsequent steel plate S (Sb) to be subsequently corrected, for the rolling reduction setting. In addition, it is not necessary to stop the subsequent steel plate S (Sb) at the stop reference position Pa or Pb, and the preceding steel plate S (Sa) and the subsequent steel plate S (Sb) can be corrected continuously. Therefore, the correction pitch can be further shortened, and the productivity can be further improved.
The steel sheet continuous straightening method of the present invention is basically configured as described above.
以上、本発明の鋼板の連続矯正方法及び装置について実施形態及び実施例を挙げて詳細に説明したが、本発明は上記実施形態及び実施例に限定されず、本発明の主旨を逸脱しない範囲において、種々の改良や変更をしてもよいのはもちろんである。   As mentioned above, although the embodiment and the Example were given and demonstrated in detail about the continuous correction method and apparatus of the steel plate of this invention, this invention is not limited to the said embodiment and Example, In the range which does not deviate from the main point of this invention. Of course, various improvements and changes may be made.
10 鋼板の連続矯正装置(ロール矯正設備)
12 ロール矯正機
14 前面搬送テーブル
16 後面搬送テーブル
18 前面停止位置基準センサ
20 後面停止位置基準センサ
22 板厚測定器
22a、22b 平坦度計
24 コントローラ
26a〜26d 上矯正ロール
28a〜28e 下矯正ロール
30 テーブルローラ
S、Sa、Sb 鋼板
10 Steel sheet continuous straightening equipment (roll straightening equipment)
DESCRIPTION OF SYMBOLS 12 Roll straightening machine 14 Front conveyance table 16 Rear conveyance table 18 Front stop position reference sensor 20 Rear stop position reference sensor 22 Plate thickness measuring device 22a, 22b Flatness meter 24 Controller 26a-26d Upper correction roll 28a-28e Lower correction roll 30 Table roller S, Sa, Sb Steel plate

Claims (12)

  1. 鋼板をロール矯正機によって複数パスで矯正するに際し、複数枚の鋼板を一組にして同時に搬送を開始し、前記一組の前記複数の鋼板を一組にして往復搬送しながら連続して矯正することを特徴とする鋼板の連続矯正方法。   When correcting a steel sheet in multiple passes with a roll straightener, a set of a plurality of steel sheets is started at the same time, and transport is started simultaneously, and the set of the plurality of steel sheets is set as a set and continuously corrected while reciprocating. A method for continuously correcting a steel sheet.
  2. 前記一組の前記複数の鋼板に対する矯正の圧下設定が同一である場合には、前記ロール矯正機において先に矯正を開始する先行の鋼板を矯正中に、同時に、前記先行の鋼板に続いて矯正を開始する後行の鋼板を矯正することを特徴とする請求項1に記載の鋼板の連続矯正方法。   When the rolling reduction setting for the set of the plurality of steel plates is the same, during the correction of the preceding steel plate that starts the correction first in the roll straightening machine, at the same time, following the preceding steel plate The continuous steel plate correction method according to claim 1, wherein a subsequent steel plate that starts the process is straightened.
  3. 前記ロール矯正機の前面の搬送テーブルにおいて、前記一組の各鋼板が一時停止する際の基準となる停止基準位置に前面停止位置基準センサを設置し、各鋼板の板厚情報及び前記前面停止位置基準センサの検知結果に基づいて、各鋼板の搬送を制御することを特徴とする請求項1または2に記載の鋼板の連続矯正方法。   In the transport table on the front surface of the roll straightening machine, a front stop position reference sensor is installed at a stop reference position, which is a reference when each set of steel plates is temporarily stopped. The method for continuously correcting steel sheets according to claim 1 or 2, wherein the conveyance of each steel sheet is controlled based on a detection result of a reference sensor.
  4. 前記ロール矯正機の後面の搬送テーブルにおいて、前記一組の各鋼板が一時停止する際の基準となる停止基準位置に後面停止位置基準センサを設置し、各鋼板の板厚情報と前記後面停止位置基準センサの検知結果に基づいて、各鋼板の搬送を制御することを特徴とする請求項3に記載の鋼板の連続矯正方法。   In the transport table on the rear surface of the roll straightening machine, a rear surface stop position reference sensor is installed at a stop reference position that is a reference when the set of each steel plate is temporarily stopped, and the thickness information of each steel plate and the rear surface stop position The steel sheet continuous correction method according to claim 3, wherein the conveyance of each steel sheet is controlled based on the detection result of the reference sensor.
  5. 前記ロール矯正機において先に矯正を開始する前記先行の鋼板と前記先行の鋼板に続いて矯正を開始する前記後行の鋼板とについて、矯正の圧下設定が同一である場合には、
    前記先行の鋼板に続いて前記後行の鋼板が前記前面停止位置基準センサで検知されても、前記後行の鋼板を前記前面の搬送テーブルの前記停止基準位置で一時停止させることなく、前記先行の鋼板が前記ロール矯正機による矯正を受けて前記ロール矯正機を抜ける前に、前記後行の鋼板を前記ロール矯正機に送り込むこととし、
    前記先行の鋼板と前記後行の鋼板とについて、矯正の圧下設定が異なる場合には、
    前記先行の鋼板に続いて前記後行の鋼板が前記前面停止位置基準センサで検知された時点で、前記後行の鋼板を前記前面の搬送テーブルの前記停止基準位置で一時停止させ、
    前記先行の鋼板が前記ロール矯正機による矯正を受けて前記ロール矯正機を抜け、前記後面の搬送テーブル上に移動し、かつ前記後行の鋼板に対する前記ロール矯正機の圧下設定が完了した時点で、前記前面の搬送テーブル上で一時停止していた前記後行の鋼板を前記ロール矯正機に送り込むことを特徴とする請求項3または4に記載の鋼板の連続矯正方法。
    In the roll straightening machine, the preceding steel plate that starts correction first and the subsequent steel plate that starts correction following the preceding steel plate, when the correction reduction setting is the same,
    Even if the succeeding steel plate is detected by the front stop position reference sensor following the preceding steel plate, the preceding steel plate is temporarily stopped at the stop reference position of the front transfer table without stopping the preceding steel plate. Before the steel sheet is subjected to correction by the roll straightening machine and exits the roll straightening machine, the subsequent steel sheet is fed into the roll straightening machine,
    For the preceding steel plate and the following steel plate, if the reduction setting for correction is different,
    When the subsequent steel plate is detected by the front stop position reference sensor following the preceding steel plate, the subsequent steel plate is temporarily stopped at the stop reference position of the front transfer table,
    When the preceding steel plate is corrected by the roll straightening machine, passes through the roll straightening machine, moves onto the rear conveyance table, and when the roll straightening setting of the roll straightening machine with respect to the subsequent steel plate is completed. The method of continuously correcting a steel sheet according to claim 3 or 4, wherein the succeeding steel sheet that has been temporarily stopped on the front conveying table is fed to the roll straightening machine.
  6. 前記ロール矯正機の前記前面の搬送テーブルに板厚測定手段を設置して、この板厚測定手段によって各鋼板の板厚を確認することを特徴とする請求項3〜5のいずれか1項に記載の鋼板の連続矯正方法。   The plate thickness measuring means is installed on the transport table on the front surface of the roll straightening machine, and the plate thickness of each steel plate is confirmed by the plate thickness measuring means. The continuous correction method of the steel plate as described.
  7. 鋼板を矯正するロール矯正機と、
    前記ロール矯正機の前面に配置され、前記ロール矯正機において矯正されている鋼板の後に矯正が開始される少なくとも1枚の鋼板を搬送する、又は停止させておく前面の搬送テーブルと、
    前記ロール矯正機の後面に配置され、前記ロール矯正機において先に矯正された少なくとも1枚の鋼板を搬送する、又は停止させておく後面の搬送テーブルと、
    複数枚の鋼板を一組にして、前記ロール矯正機、並びに前記前面の搬送テーブル及び/又は前記後面の搬送テーブルで同時に往復搬送しながら鋼板を前記ロール矯正機によって複数パスで連続して矯正するように、前記ロール矯正機、前記前面の搬送テーブル及び前記後面の搬送テーブルによる各鋼板の搬送を制御するコントローラとを有し、
    前記コントローラは、前記ロール矯正機、並びに前記前面の搬送テーブル及び/又は前記後面の搬送テーブルにおいて、前記一組の前記複数の鋼板の搬送を同時に開始するように制御することを特徴とする鋼板の連続矯正装置。
    A roll straightening machine to straighten the steel sheet;
    A front conveying table that is arranged on the front surface of the roll straightening machine and conveys or stops at least one steel sheet whose straightening is started after the steel sheet being straightened in the roll straightening machine;
    A transport table on the rear surface that is disposed on the rear surface of the roll straightener and transports or stops at least one steel plate that has been straightened in the roll straightener;
    A set of a plurality of steel plates, and continuously reciprocating the steel plates in a plurality of passes by the roll straightener while simultaneously reciprocating the roll straightener and / or the front carrying table and / or the rear carrying table. And a controller for controlling the conveyance of each steel sheet by the roll straightening machine, the front conveyance table and the rear conveyance table,
    The controller controls the steel sheet straightener and the front transport table and / or the rear transport table to simultaneously start transporting the set of the plurality of steel sheets. Continuous straightening device.
  8. 前記コントローラは、前記一組の前記複数の鋼板に対する矯正の圧下設定が同一である場合には、前記ロール矯正機において先に矯正を開始する先行の鋼板を矯正中に、同時に、前記先行の鋼板に続いて矯正を開始する後行の鋼板を矯正するように制御することを特徴とする請求項7に記載の鋼板の連続矯正装置。   The controller is configured to simultaneously correct the preceding steel plate while straightening the preceding steel plate that starts the correction first in the roll straightening machine when the set reduction of the plurality of steel plates is the same. The continuous steel sheet straightening device according to claim 7, wherein control is performed so as to straighten a succeeding steel sheet that starts straightening.
  9. さらに、前記前面の搬送テーブルの、前記一組の各鋼板が一時停止する際の基準となる停止基準位置に設置された前面停止位置基準センサを有し、
    前記コントローラは、前記一組の各鋼板の板厚情報及び前記前面停止位置基準センサの検知結果に基づいて、各鋼板の搬送を制御する請求項7または8に記載の鋼板の連続矯正装置。
    Furthermore, the front transfer table has a front stop position reference sensor installed at a stop reference position that becomes a reference when each set of steel plates temporarily stops,
    The steel sheet continuous correction device according to claim 7 or 8, wherein the controller controls the conveyance of each steel sheet based on the thickness information of the set of each steel sheet and the detection result of the front stop position reference sensor.
  10. さらに、前記後面の搬送テーブルの、前記一組の各鋼板が一時停止する際の基準となる停止基準位置に設置された後面停止位置基準センサを有し、
    前記コントローラは、前記一組の各鋼板の板厚情報及び前記後面停止位置基準センサの検知結果に基づいて、各鋼板の搬送を制御する請求項9に記載の鋼板の連続矯正装置。
    Furthermore, it has a rear surface stop position reference sensor installed at a stop reference position that becomes a reference when each set of steel plates of the rear surface of the transfer table is temporarily stopped,
    The steel sheet continuous correction device according to claim 9, wherein the controller controls the conveyance of each steel sheet based on the plate thickness information of each set of each steel sheet and the detection result of the rear surface stop position reference sensor.
  11. 前記コントローラは、前記ロール矯正機において先に矯正を開始する前記先行の鋼板と前記先行の鋼板に続いて矯正を開始する前記後行の鋼板とについて、矯正の圧下設定が同一である場合には、前記先行の鋼板に続いて前記後行の鋼板が前記前面停止位置基準センサで検知されたことを示す検知結果を受けても、前記後行の鋼板を前記前面の搬送テーブルの前記停止基準位置で一時停止させることなく、前記先行の鋼板が前記ロール矯正機による矯正を受けて前記ロール矯正機を抜ける前に、前記後行の鋼板を前記ロール矯正機に送り込むように制御し、前記先行の鋼板と前記後行の鋼板とについて、矯正の圧下設定が異なる場合には、前記先行の鋼板に続いて前記後行の鋼板が前記前面停止位置基準センサで検知されたことを示す検知結果を受けて、前記後行の鋼板を前記前面の搬送テーブルの前記停止基準位置で一時停止させ、
    前記先行の鋼板が前記ロール矯正機による矯正を受けて前記ロール矯正機を抜け、前記後面の搬送テーブル上に移動したことを示す情報、及び前記後行の鋼板に対する前記ロール矯正機の圧下設定が完了したことを示す情報を受けて、前記前面の搬送テーブル上で一時停止していた前記後行の鋼板を前記ロール矯正機に送り込むように制御することを特徴とする請求項9または10に記載の鋼板の連続矯正装置。
    When the controller has the same rolling reduction setting for the preceding steel plate that starts correction first and the subsequent steel plate that starts correction following the preceding steel plate in the roll straightening machine, Even if the detection result indicating that the succeeding steel plate is detected by the front stop position reference sensor following the preceding steel plate, the succeeding steel plate is moved to the stop reference position of the front transfer table. Before the preceding steel sheet is subjected to correction by the roll straightening machine and exits the roll straightening machine without being temporarily stopped at, and is controlled to send the subsequent steel sheet to the roll straightening machine, When the rolling reduction setting for the steel sheet and the succeeding steel sheet are different, a detection result indicating that the succeeding steel sheet is detected by the front stop position reference sensor following the preceding steel sheet. Receiving, temporarily stopped the steel plate of the rear row in the stop reference position of the front surface of the transfer table,
    Information indicating that the preceding steel sheet has been corrected by the roll straightening machine, passed through the roll straightening machine, and moved onto the transport table on the rear surface, and the roll straightening setting of the roll straightening machine with respect to the subsequent steel sheet is 11. The apparatus according to claim 9 or 10, wherein information indicating completion is received and control is performed so that the subsequent steel plate that has been temporarily stopped on the front conveyance table is fed to the roll straightening machine. Steel sheet straightening device.
  12. さらに、前記ロール矯正機の前記前面の搬送テーブルに設置された板厚測定手段を有し、
    前記コントローラは、前記板厚測定手段によって各鋼板の板厚を確認することを特徴とする請求項9〜11のいずれか1項に記載の鋼板の連続矯正装置。
    Furthermore, it has a plate thickness measuring means installed on the front conveying table of the roll straightening machine,
    The said controller checks the plate | board thickness of each steel plate by the said plate | board thickness measurement means, The continuous correction apparatus of the steel plate of any one of Claims 9-11 characterized by the above-mentioned.
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* Cited by examiner, † Cited by third party
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JP2003326302A (en) * 2002-05-15 2003-11-18 Jfe Steel Kk Method and device for manufacturing thick steel plate
JP2008100260A (en) * 2006-10-19 2008-05-01 Jfe Steel Kk Method of continuously straightening steel sheet

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003326302A (en) * 2002-05-15 2003-11-18 Jfe Steel Kk Method and device for manufacturing thick steel plate
JP2008100260A (en) * 2006-10-19 2008-05-01 Jfe Steel Kk Method of continuously straightening steel sheet

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