JP5194507B2 - Thick steel plate end shear and thick steel plate shearing method - Google Patents

Thick steel plate end shear and thick steel plate shearing method Download PDF

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JP5194507B2
JP5194507B2 JP2007079217A JP2007079217A JP5194507B2 JP 5194507 B2 JP5194507 B2 JP 5194507B2 JP 2007079217 A JP2007079217 A JP 2007079217A JP 2007079217 A JP2007079217 A JP 2007079217A JP 5194507 B2 JP5194507 B2 JP 5194507B2
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thick steel
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直一 山村
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JFE Steel Corp
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Description

本発明は、幅方向に2分割された厚鋼板を、剪断ライン上で、同時に長手方向を指示された長さに切断するときの剪断精度の向上方法に関するものである。   The present invention relates to a method for improving shear accuracy when a steel plate divided into two in the width direction is simultaneously cut on a shear line to a specified length in the longitudinal direction.

厚鋼板は、スラブを所定の厚・幅・長さに熱間にて仕上げ圧延後、板厚４０ｍｍ以下の鋼板は、搬送ライン上で剪断機によって、所定の幅と長さに剪断されて、一枚の厚鋼板製品に仕上げられて製品ヤードに搬送される。   Thick steel plates are hot rolled to a predetermined thickness, width and length of the slab, and then steel plates with a thickness of 40 mm or less are sheared to a predetermined width and length by a shearing machine on the transport line, Finished into a single sheet steel product and transported to the product yard.

そこで、寸法精度が高い、厚鋼板製品を得るための剪断精度向上策が色々検討されている。例えば、特許文献１には、厚鋼板先端からメジャリングロールで厚鋼板移送量を計測し、その移送量が所定値に達した時に切断マークをマーキングし、該切断マーク位置で切断する技術が開示されている。   Therefore, various measures for improving the shearing accuracy for obtaining a thick steel plate product with high dimensional accuracy are being studied. For example, Patent Document 1 discloses a technique of measuring a thick steel plate transfer amount from a leading end of a thick steel plate with a measuring roll, marking a cut mark when the transfer amount reaches a predetermined value, and cutting at the cut mark position. Has been.

特許文献２には、レーザドップラ速度計と測長ロールとを使用し、且つ被測定材の先端を検出する複数の厚鋼板先端検出センサを所定間隔で、厚鋼板幅方向に設け、目標剪断長さに最も近い先端検出器による検出値に、目標剪断長さと検出値の差分をレーザドップラ速度計ないし測長ロールで求め、その合計を測長値とする、測長距離に応じて発生する誤差を削減する技術が開示されている。   In Patent Document 2, a plurality of thick steel plate tip detection sensors that use a laser Doppler velocimeter and a length measuring roll and detect the tip of a material to be measured are provided at predetermined intervals in the thickness direction of the thick steel plate, and a target shear length is provided. The difference between the target shear length and the detected value is detected by a laser Doppler velocimeter or length measuring roll, and the total is the measured value, and the error that occurs according to the measured distance. A technique for reducing the above is disclosed.

特許文献３には、剪断実績を高精度に測長する平面形状計を用いた技術が開示されている。   Patent Document 3 discloses a technique using a planar shape meter that measures the shear performance with high accuracy.

上述した、技術はいずれも一枚の厚鋼板についての剪断精度の向上策であり、幅方向に２分割された厚鋼板を同時に切断する場合の剪断精度については開示されていない。   All of the above-described techniques are measures for improving the shearing accuracy of a single thick steel plate, and the shearing accuracy in the case of simultaneously cutting a thick steel plate divided into two in the width direction is not disclosed.

厚鋼板の剪断においては図４に示すように、厚鋼板幅方向の分割切断と厚鋼板長手方向の切断は、ライン上異なる剪断機４、５で切断される。厚鋼板幅方向の分割切断はサイドシヤー４によって、厚鋼板長手方向切断はエンドシヤー５によって行われ、圧延機から搬送されてきた厚鋼板は、サイドシヤー４によって厚鋼板幅方向に分割切断される。本分割は通常、２分割切断がメインである。   In shearing a thick steel plate, as shown in FIG. 4, split cutting in the thick steel plate width direction and cutting in the long steel plate longitudinal direction are performed by different shearing machines 4 and 5 on the line. Divided cutting in the width direction of the thick steel plate is performed by the side shear 4 and cutting in the longitudinal direction of the thick steel plate is performed by the end shear 5, and the thick steel plate conveyed from the rolling mill is divided and cut in the width direction of the thick steel plate by the side shear 4. The main division is usually two-division cutting.

鋼板幅方向に２分割された厚鋼板は２枚が平行して、長手方向切断のために，エンドシヤー５に搬送される。この場合、サイドシヤー４切断直後は、２枚の厚鋼板１、２には長手方向にずれは発生していなくても、ライン３を搬送中に搬送ロールの摩耗等や厚鋼板の加速、減速時の厚鋼板と搬送ロール間にスリップが生じることにより、エンドシヤー５到達時に２枚の厚鋼板１、２には長手方向にずれが発生する場合がある。   Two thick steel plates divided in two in the steel plate width direction are parallel to each other and conveyed to the end shear 5 for longitudinal cutting. In this case, immediately after the side shear 4 is cut, even if the two thick steel plates 1 and 2 are not displaced in the longitudinal direction, the conveyance roll is worn during the transportation of the line 3, and the thick steel plate is accelerated or decelerated. As a result of slip between the thick steel plates and the transport rolls, the two thick steel plates 1 and 2 may be displaced in the longitudinal direction when the end shear 5 is reached.

図４に示すように、エンドシヤー５においては、平行に並んだ２枚の厚鋼板１、２は剪断能率向上のため、同時に先端部が切断される。この場合、片方の厚鋼板２（S側厚鋼板）の先端部が長手方向にずれていると、２枚の厚鋼板の切断位置を合わせるために、ずれ量相当分は、歩留まりロスとして切り落とさざるを得ず、片方の厚鋼板２（S側厚鋼板）に長さ不足が発生する可能性がある。   As shown in FIG. 4, in the end shear 5, the two thick steel plates 1 and 2 aligned in parallel are cut at the same time at the same time in order to improve the shear efficiency. In this case, if the tip of one thick steel plate 2 (S-side thick steel plate) is shifted in the longitudinal direction, the amount corresponding to the shift amount is not cut off as a yield loss in order to match the cutting positions of the two thick steel plates. Insufficient length may occur in one steel plate 2 (S-side steel plate).

このような、長さ不足を回避するために、ずれ量相当分を考慮した余長を付加した厚鋼板歩留まりの設計を行わざる得なくなり、厚鋼板歩留まりの低下を招いていた。
特開昭５２−１４３５８１号公報 特開平１０−１９５４６号公報 特開平１１−４４５１６号公報 In order to avoid such a shortage of length, it has been necessary to design a thick steel plate yield to which a surplus length considering the amount corresponding to the deviation amount is added, resulting in a reduction in the thick steel plate yield.
JP-A-52-143581 Japanese Patent Laid-Open No. 10-19546 Japanese Patent Laid-Open No. 11-44516

本発明は、上述した厚鋼板先端部のズレを解消し、剪断歩留ロスを低減するエンドシヤー搬送ラインおよび厚鋼板の剪断方法を提供することを課題とする。   It is an object of the present invention to provide an end shear transfer line and a thick steel plate shearing method that eliminate the above-described misalignment of the thick steel plate tip and reduce shear yield loss.

本発明のエンドシヤー搬送ラインおよび厚鋼板の剪断方法は、以下の特徴を有する。   The end shear conveying line and the thick steel plate shearing method of the present invention have the following characteristics.

第一の発明は、幅方向に２分割された厚鋼板を搬送する搬送ライン上に設置され、前記２分割された厚鋼板の各々の先端部を揃えて剪断するエンドシヤーであって、搬送ライン上に直交配置された前記厚鋼板の各先端部を検知する厚鋼板先端検出センサと、前記厚鋼板の各々の移動距離を計測する測長計と、前記厚鋼板の各々の先端部のずれ量を計算記憶する測長演算装置と、前記厚鋼板の各々の先端部のずれ量を解消するための鋼板上昇下降装置であるアライニングマグネットとを備えたことを特徴とする厚鋼板のエンドシヤーである。 A first invention is an end shear that is installed on a conveying line that conveys a thick steel plate divided in two in the width direction, and that shears the tip ends of the two divided thick steel plates in a uniform manner. A thick steel plate tip detection sensor that detects each front end portion of the thick steel plate arranged orthogonally to the thick steel plate, a length meter that measures each moving distance of the thick steel plate, and a deviation amount of each front end portion of the thick steel plate is calculated. A steel plate end shear comprising: a length measuring calculation device for storing; and an aligning magnet that is a steel plate ascending / descending device for eliminating a deviation amount of each tip of the steel plate .

第二の発明は、前記測長計はレーザドップラ速度計または測長ロールであり、前記厚鋼板先端検出センサは光センサであることを特徴とする第一の発明に記載の厚鋼板のエンドシヤーである。 A second invention is the thick steel plate end shear according to the first invention, wherein the length meter is a laser Doppler velocimeter or a length measuring roll, and the thick steel plate tip detection sensor is an optical sensor. .

第三の発明は、幅方向に２分割された厚鋼板の先端部を揃えて切断する厚鋼板の剪断方法であって、２分割された各厚鋼板の先端部を検知して先端部の搬送ライン上の移動距離を計測する工程と、前記計測された移動距離から２枚の厚鋼板の先端部のずれ量を算出する工程と、２枚の厚鋼板のうちの後行厚鋼板を搬送ライン上に持ち上げる工程と、先行厚鋼板を前記ずれ量分搬送ライン上で後退させる工程と、後行厚鋼板を搬送ライン上に戻して、その先端部の搬送方向の位置を先行厚鋼板の先端部の位置と一致させる工程と、先端部の位置を一致させた２枚の厚鋼板の先端部を剪断する工程とからなることを特徴とする厚鋼板の剪断方法である。   The third invention is a thick steel plate shearing method in which the front ends of the thick steel plates divided in two in the width direction are aligned and cut, and the front end of each thick steel plate divided into two is detected and conveyed. A step of measuring a moving distance on the line, a step of calculating a deviation amount of a tip portion of the two thick steel plates from the measured moving distance, and a conveying line for a trailing thick steel plate of the two thick steel plates A step of lifting up, a step of retracting the preceding thick steel plate on the conveying line by the amount of deviation, and returning the succeeding thick steel plate onto the conveying line, and the position of the leading end in the conveying direction is set to the leading end of the preceding thick steel plate And a step of shearing the tip portions of the two thick steel plates having the same tip position, and a shearing method for the thick steel plate.

第四の発明は、幅方向に２分割された厚鋼板の先端部を揃えて切断する厚鋼板の剪断方法であって、２分割された各厚鋼板の先端部を検知して先端部の搬送ライン上の移動距離を計測する工程と、前記計測された移動距離から２枚の厚鋼板の先端部のずれ量を算出する工程と、２枚の厚鋼板のうちの先行厚鋼板を搬送ライン上に持ち上げる工程と、後行厚鋼板を前記ずれ量分搬送ライン上で前進させる工程と、先行厚鋼板を搬送ライン上に戻して、その先端部の搬送方向の位置を後行厚鋼板の先端部の位置と一致させる工程と、先端部の位置を一致させた２枚の厚鋼板の先端部を剪断する工程とからなることを特徴とする厚鋼板の剪断方法である。   A fourth invention is a thick steel plate shearing method in which the front ends of the thick steel plates divided into two in the width direction are aligned and cut, and the front end of each thick steel plate divided into two is detected and conveyed. A step of measuring the moving distance on the line, a step of calculating a deviation amount of the tip of the two thick steel plates from the measured moving distance, and a preceding thick steel plate of the two thick steel plates on the conveying line And a step of advancing the succeeding thick steel plate on the transport line by the amount of deviation, returning the preceding thick steel plate to the transport line, and setting the position of the leading end in the transport direction to the leading end of the succeeding thick steel plate And a step of shearing the tip portions of the two thick steel plates having the same tip position, and a shearing method for the thick steel plate.

本発明によれば、測長計と厚鋼板先端検出センサと測長演算装置とによって、併走する厚鋼板の先端部のずれ量が迅速に算出できるので、歩留ロスの少ないエンドシヤーでの厚鋼板の切断が可能となる。   According to the present invention, since the amount of deviation of the tip portion of the thick steel plate running side by side can be quickly calculated by the length meter, the thick steel plate tip detection sensor, and the length measurement calculation device, the thickness of the thick steel plate at the end shear with low yield loss can be calculated. Cutting is possible.

以下本発明の実施の形態を図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the drawings.

上述した図４に示すように、サイドシヤー４で１枚の厚鋼板がN側、S側の２枚の厚鋼板に分割された厚鋼板１、２は、分割直後は、２枚の厚鋼板の先端部は、ほぼ揃っていても、エンドシヤー５に到達時には、２枚の厚鋼板１、２の先端部にずれが生じる場合がある。   As shown in FIG. 4 described above, the thick steel plates 1 and 2 in which one thick steel plate is divided into two thick steel plates on the N side and the S side by the side shear 4 are the two thick steel plates immediately after the division. Even when the tips are substantially aligned, the tips of the two thick steel plates 1 and 2 may be displaced when reaching the end shear 5.

１．エンドシヤーの設備について
上述した場合において、本発明の厚鋼板の剪断方法を図１及び図２に示す。エンドシヤー５の上流側に測長計９と厚鋼板先端検出センサ６を設け、測長演算装置１０を備える。 1. About the equipment of an end shear In the case mentioned above, the shearing method of the thick steel plate of this invention is shown in FIG.1 and FIG.2. A length measuring meter 9 and a thick steel plate tip detection sensor 6 are provided upstream of the end shear 5, and a length measuring calculation device 10 is provided.

測長計９は、厚鋼板の移動に伴い回転する測長ロールを厚鋼板に接触させ、その回転に応じてパルスを発生する発信器のパルスをカウントし、厚鋼板の移動距離を算出する接触式の測長方法が一般的であるが、さらに精度を高める場合は、光のドップラ効果を用いたレーザドップラ速度計により、鋼板の速度を測定し、これを測定時間で積分することによって、厚鋼板の移動距離を算出する非接触式の測長方法であってもよい。   The length measuring device 9 is a contact type that contacts a thick steel plate that rotates with the movement of the thick steel plate, counts the pulses of a transmitter that generates a pulse in accordance with the rotation, and calculates the moving distance of the thick steel plate. In order to further improve the accuracy, the steel plate speed is measured with a laser Doppler velocimeter using the optical Doppler effect, and this is integrated with the measurement time. It is also possible to use a non-contact type length measuring method for calculating the moving distance.

厚鋼板先端検出センサ６は、光センサを用いる。投光機（図示せず）からの光が遮断された時に搬送されてきた厚鋼板１、２の先端部を検出する。本実施の形態ではN側に厚鋼板１が、S側に厚鋼板２が位置するので、光センサは各厚鋼板に対応する位置に、厚鋼板１、２の搬送方向に直交して最低各１個設置する。   The thick steel plate tip detection sensor 6 uses an optical sensor. The front ends of the thick steel plates 1 and 2 that have been transported when light from a projector (not shown) is blocked are detected. In the present embodiment, since the thick steel plate 1 is located on the N side and the thick steel plate 2 is located on the S side, the optical sensor is positioned at a position corresponding to each thick steel plate at least each perpendicular to the conveying direction of the thick steel plates 1 and 2. Install one.

厚鋼板先端検出センサ６と測長計９との距離は予め測定しておき、厚鋼板の先端を検出した時点でその値が測長値に反映されるようにする。   The distance between the thick steel plate tip detection sensor 6 and the length meter 9 is measured in advance, and the value is reflected in the measured value when the tip of the thick steel plate is detected.

測長演算装置１０では、厚鋼板１と２の先端が厚鋼板先端検出センサ６を通過した時点で、厚鋼板１の先端部と厚鋼板２の先端部の距離差（ずれ量）が計算され記憶される。本発明では、図１に示すように、先行する厚鋼板を、搬送ラインＳ側に位置する厚鋼板２とし、後行する厚鋼板を、搬送ラインＮ側に位置する厚鋼板１とする。なお、搬送ラインＳ側、Ｎ側は、ライン幅方向位置を識別するために、搬送ラインの置かれた方位からつけた呼称であり他意はない。   In the length measurement computing device 10, when the leading ends of the thick steel plates 1 and 2 pass the thick steel plate leading end detection sensor 6, the distance difference (deviation amount) between the leading end of the thick steel plate 1 and the leading end of the thick steel plate 2 is calculated. Remembered. In the present invention, as shown in FIG. 1, the preceding thick steel plate is the thick steel plate 2 positioned on the transport line S side, and the subsequent thick steel plate is the thick steel plate 1 positioned on the transport line N side. In addition, the conveyance line S side and the N side are names given from the direction in which the conveyance line is placed in order to identify the position in the line width direction, and have no meaning.

アライニングマグネット７は、搬送ラインのＮ側、Ｓ側に設置され、厚鋼板１と２が厚鋼板先端検出センサ６を通過した後、エンドシヤー５の手前で停止した時点で、Ｎ側のアライニングマグネット７が上昇して、後行する厚鋼板１を搬送ラインから切り離すための装置である。   The aligning magnet 7 is installed on the N side and the S side of the transport line, and when the thick steel plates 1 and 2 pass through the thick steel plate leading end detection sensor 6 and stop before the end shear 5, the aligning magnet 7 is arranged on the N side. This is a device for separating the subsequent thick steel plate 1 from the conveying line by raising the magnet 7.

次いで、図２に示すように搬送ラインのテーブルロールを逆回転して、先行する厚鋼板２を厚鋼板１と厚鋼板２との距離差（ずれ量）分後退させて停止する。そして、厚鋼板１を持ち上げていたＮ側のアライニングマグネット７が下降して厚鋼板１を搬送ライン上に置くことにより厚鋼板１と厚鋼板２の先端部が揃うこととなる。   Next, as shown in FIG. 2, the table roll of the conveying line is reversely rotated, and the preceding thick steel plate 2 is moved backward by the distance difference (deviation amount) between the thick steel plate 1 and the thick steel plate 2 and stopped. Then, the N-side aligning magnet 7 that has lifted the thick steel plate 1 descends and places the thick steel plate 1 on the transport line, so that the leading ends of the thick steel plate 1 and the thick steel plate 2 are aligned.

以上、先行するＳ側の厚鋼板を後退させる場合について説明したが、本発明は、上述したケースに限定されるものではなく、Ｓ側の厚鋼板を持ち上げて、Ｎ側の厚鋼板１を前進させて両厚鋼板の先端部を揃える場合も設備的には同じであり、同様の効果を得ることができる。   As described above, the case where the preceding S-side thick steel plate is retracted has been described, but the present invention is not limited to the above-described case, and the S-side thick steel plate is lifted to advance the N-side thick steel plate 1. In the case where the tips of both thick steel plates are aligned, the same equipment is used and the same effect can be obtained.


２．エンドシヤー設備の作用について
幅方向に２分割された厚鋼板の先端揃えは、測長計９で計測された厚鋼板１と厚鋼板２の厚鋼板長さ方向距離を、測長演算装置１０で時間関数として把握して、厚鋼板１と厚鋼板２との距離差（ずれ量）を計算して、該距離差分を補正することにより行う。以下にその補正方法を図３に示すフロー図を用いて説明する。
2. About the action of the end shear equipment The tip alignment of the thick steel plates divided into two in the width direction is the time function of the length direction distance between the thick steel plate 1 and the thick steel plate 2 measured by the length measuring meter 9 by the length measuring device 10. This is performed by calculating the distance difference (deviation amount) between the thick steel plate 1 and the thick steel plate 2 and correcting the distance difference. The correction method will be described below with reference to the flowchart shown in FIG.

Ｓ１：厚鋼板先端部の検知と移動距離の計測
搬送ラインのＮ側、Ｓ側を併走する厚鋼板１と厚鋼板２が厚鋼板先端検出センサ６を通過すると、測長計９が起動し、各厚鋼板の移動距離を計測開始する。該移動距離は、時間関数として計測される。 S1: Detection of the tip of the thick steel plate and measurement of the moving distance When the thick steel plate 1 and the thick steel plate 2 running along the N side and the S side of the transport line pass through the thick steel plate tip detection sensor 6, the length measuring device 9 is activated, Start measuring the moving distance of thick steel plate. The travel distance is measured as a time function.

Ｓ２：厚鋼板先端部ずれ量算出
ステップ１で計測された厚鋼板１と厚鋼板２の移動距離は測長演算装置１０に送られ時間関数として記憶され、その計算結果から、後行厚鋼板１の先行厚鋼板２からの距離差（ずれ量）を決定する。 S2: Thick Steel Plate Tip Deviation Amount Calculation The moving distance between the thick steel plate 1 and the thick steel plate 2 measured in Step 1 is sent to the length measuring device 10 and stored as a time function. The distance difference (deviation amount) from the preceding thick steel plate 2 is determined.

Ｓ３：後行厚鋼板の上昇
後行厚鋼板１と先行厚鋼板２の先端部を揃える作業として、後行厚鋼板１を搬送ラインから切り離すために、アライニングマグネット７によって、後行厚鋼板１を搬送ライン上に保持する。 S3: Raising the trailing thick steel plate As an operation of aligning the leading end portions of the trailing thick steel plate 1 and the preceding thick steel plate 2, the trailing thick steel plate 1 is separated by the aligning magnet 7 in order to separate the trailing thick steel plate 1 from the conveying line. Is held on the transfer line.

Ｓ４：先行厚鋼板の後退
後行厚鋼板１が搬送ライン上に保持されたら、搬送ラインのテーブルロールを逆回転して、先行厚鋼板２を後行厚鋼板１と先行厚鋼板２との距離差（ずれ量）分後退させて停止する。 S4: Retreat of the preceding thick steel plate When the succeeding thick steel plate 1 is held on the transport line, the table roll of the transport line is reversely rotated, and the distance between the succeeding thick steel plate 1 and the preceding thick steel plate 2 is changed. Move backward by the difference (deviation amount) and stop.

Ｓ５：先行/後行厚鋼板の先端位置合わせ
搬送ライン上に保持されていた後行厚鋼板１を、Ｎ側のアライニングマグネット７を下降させて、搬送ライン上に戻す。これにより、先行厚鋼板２と後行厚鋼板１との先端合わせ作業は完了する。 S5: Alignment of the leading / following thick steel plate tips The trailing thick steel plate 1 held on the transport line is lowered on the N-side aligning magnet 7 and returned to the transport line. Thereby, the tip alignment work of the preceding thick steel plate 2 and the subsequent thick steel plate 1 is completed.

以上、先行するＳ側の厚鋼板を後退させる場合の作用について説明したが、本発明は、上述したケースに限定されるものではなく、Ｓ側の厚鋼板を持ち上げて、Ｎ側の厚鋼板１を前進させて両厚鋼板の先端部を揃える場合も同様の効果を得ることができる。   As mentioned above, although the effect | action at the time of retreating the preceding S side thick steel plate was demonstrated, this invention is not limited to the case mentioned above, the S side thick steel plate is lifted and the N side thick steel plate 1 is raised. The same effect can be obtained when the front ends of both thick steel plates are aligned by advancing.

一般構造用鋼ＳＳ４００を使って、板厚６〜４０ｍｍ、板幅１０００〜２５００ｍｍ、板長さ６０００〜２６０００ｍｍに剪断を行った。切断枚数は１〜１５枚である。   Using general structural steel SS400, shearing was performed to a plate thickness of 6 to 40 mm, a plate width of 1000 to 2500 mm, and a plate length of 6000 to 26000 mm. The number of cuts is 1 to 15.

サイドシヤー４で鋼板幅方向に２分割された厚鋼板をエンドシヤー前に搬送した。
厚鋼板先端検出センサ６、アライニングマグネット７、８、測長計９、測長演算装置１０の配置は図１の通りに設置した。 The thick steel plate divided into two in the steel plate width direction by the side shear 4 was conveyed before the end shear.
The arrangement of the thick steel plate tip detection sensor 6, the aligning magnets 7 and 8, the length measuring device 9 and the length measuring operation device 10 was installed as shown in FIG.

図２の両厚鋼板の先端部を揃えるまでの一連の作業は、全て自動で行った。
厚鋼板先端部のずれ量は従来平均が７０ｍｍ（５０〜１００ｍｍ）であったが本発明方法を適用することにより１０ｍｍ以下となった。 A series of operations up to aligning the tips of both thick steel plates in FIG. 2 were all performed automatically.
The deviation amount of the front end of the thick steel plate was 70 mm (50 to 100 mm) in the conventional average, but became 10 mm or less by applying the method of the present invention.

重量がｔｏｎ単位の厚鋼板を搬送ライン上で移動させて、２枚の厚鋼板の先端部を揃える作業であり、ずれ量を完全にゼロとすることは、むつかしかったが、剪断歩留ロスは従来０．４％であったものが０．１％に向上した。
平均中板長１６０００ｍｍ、幅方向２分割比率５０％とすると厚鋼板１枚当たりの歩留ロスは０．１５％に向上した。
更に、一連の作業を自動化することによって、剪断時間は、自動化しなかった場合に比べて５秒短縮できた。 It was an operation to move the thick steel plate with the weight of ton on the transport line and align the tips of the two thick steel plates. It was difficult to make the shift amount completely zero, but the shear yield loss was What used to be 0.4% has improved to 0.1%.
When the average middle plate length was 16000 mm and the width direction split ratio was 50%, the yield loss per thick steel plate was improved to 0.15%.
Furthermore, by automating a series of operations, the shearing time could be shortened by 5 seconds compared to the case where it was not automated.

２以上の鋼材、特にH形鋼、鋼矢板等の条鋼材を平行搬送する場合に本発明は適用できる。   The present invention can be applied to the case where two or more steel materials, in particular, steel bars such as H-shaped steel and steel sheet piles are conveyed in parallel.

本発明の厚鋼板停止状態を説明する図である。It is a figure explaining the thick steel plate stop state of this invention. 本発明の厚鋼板先端部を揃えた状態を説明する図である。It is a figure explaining the state which prepared the thick steel plate front-end | tip part of this invention. 厚鋼板の剪断方法を説明するフロー図である。It is a flowchart explaining the shearing method of a thick steel plate. サイドシヤーからエンドシヤーへの厚鋼板搬送状態を説明する図である。It is a figure explaining the steel plate conveyance state from a side shear to an end shear. 従来の厚鋼板剪断状態を説明する図である。It is a figure explaining the conventional thick steel plate shear state.

符号の説明Explanation of symbols

１ 厚鋼板１（N側厚鋼板）
２ 厚鋼板２（S側厚鋼板）
３ 搬送ライン
４ サイドシヤー
５ エンドシヤー
６ 厚鋼板先端検出センサ
７ アライニングマグネット（N側）
８ アライニングマグネット（S側）
９ 測長計
１０ 測長演算装置 1 Thick steel plate 1 (N side thick steel plate)
2 Thick steel plate 2 (S side thick steel plate)
3 Transport line 4 Side shear 5 End shear 6 Thick steel plate tip detection sensor 7 Aligning magnet (N side)
8 Aligning magnet (S side)
9 Length meter 10 Length measuring device

Claims (4)

幅方向に２分割された厚鋼板を搬送する搬送ライン上に設置され、前記２分割された厚鋼板の各々の先端部を揃えて剪断するエンドシヤーであって、搬送ライン上に直交配置された前記厚鋼板の各先端部を検知する厚鋼板先端検出センサと、前記厚鋼板の各々の移動距離を計測する測長計と、前記厚鋼板の各々の先端部のずれ量を計算記憶する測長演算装置と、前記厚鋼板の各々の先端部のずれ量を解消するための鋼板上昇下降装置であるアライニングマグネットとを備えたことを特徴とする厚鋼板のエンドシヤー。 An end shear that is installed on a conveying line that conveys a thick steel plate divided into two in the width direction, and that shears the tip ends of the two divided thick steel plates in a uniform manner, and arranged orthogonally on the conveying line Thick steel plate front end detection sensor for detecting each front end portion of the thick steel plate , a length meter for measuring each moving distance of the thick steel plate, and a length measurement calculation device for calculating and storing a deviation amount of each front end portion of the thick steel plate And an aligning magnet which is a steel plate ascending / descending device for eliminating the amount of deviation of the tip of each thick steel plate . 前記測長計はレーザドップラ速度計または測長ロールであり、前記厚鋼板先端検出センサは光センサであることを特徴とする請求項1記載の厚鋼板のエンドシヤー。 2. The thick steel plate end shear according to claim 1, wherein the length meter is a laser Doppler velocimeter or a length measuring roll, and the thick steel plate tip detection sensor is an optical sensor. 幅方向に２分割された厚鋼板の先端部を揃えて切断する厚鋼板の剪断方法であって、２分割された各厚鋼板の先端部を検知して先端部の搬送ライン上の移動距離を計測する工程と、前記計測された移動距離から２枚の厚鋼板の先端部のずれ量を算出する工程と、２枚の厚鋼板のうちの後行厚鋼板を搬送ライン上に持ち上げる工程と、先行厚鋼板を前記ずれ量分搬送ライン上で後退させる工程と、後行厚鋼板を搬送ライン上に戻して、その先端部の搬送方向の位置を先行厚鋼板の先端部の位置と一致させる工程と、先端部の位置を一致させた２枚の厚鋼板の先端部を剪断する工程とからなることを特徴とする厚鋼板の剪断方法。   A method of shearing a thick steel plate in which the front ends of the thick steel plates divided into two in the width direction are aligned and cut, and the front end of each of the two thick steel plates is detected and the moving distance of the front end on the transport line is determined. A step of measuring, a step of calculating the amount of deviation of the tip portion of the two thick steel plates from the measured moving distance, a step of lifting the subsequent thick steel plate out of the two thick steel plates onto the conveyance line, A step of retracting the preceding thick steel plate on the conveying line by the amount of deviation, and a step of returning the succeeding thick steel plate on the conveying line to match the position of the leading end in the conveying direction with the position of the leading end of the preceding thick steel plate And a step of shearing the tip portions of the two thick steel plates having the tip positions coincided with each other. 幅方向に２分割された厚鋼板の先端部を揃えて切断する厚鋼板の剪断方法であって、２分割された各厚鋼板の先端部を検知して先端部の搬送ライン上の移動距離を計測する工程と、前記計測された移動距離から２枚の厚鋼板の先端部のずれ量を算出する工程と、２枚の厚鋼板のうちの先行厚鋼板を搬送ライン上に持ち上げる工程と、後行厚鋼板を前記ずれ量分搬送ライン上で前進させる工程と、先行厚鋼板を搬送ライン上に戻して、その先端部の搬送方向の位置を後行厚鋼板の先端部の位置と一致させる工程と、先端部の位置を一致させた２枚の厚鋼板の先端部を剪断する工程とからなることを特徴とする厚鋼板の剪断方法。   A method of shearing a thick steel plate in which the front ends of the thick steel plates divided into two in the width direction are aligned and cut, and the front end of each of the two thick steel plates is detected and the moving distance of the front end on the transport line is determined. A step of measuring, a step of calculating the amount of deviation of the tip portion of the two thick steel plates from the measured moving distance, a step of lifting the preceding thick steel plate of the two thick steel plates onto the conveying line, and A step of advancing the row thick steel plate on the conveyance line by the amount of deviation, and a step of returning the preceding thick steel plate to the conveyance line and matching the position of the leading end portion in the conveyance direction with the position of the leading end portion of the subsequent thick steel plate And a step of shearing the tip portions of the two thick steel plates having the tip positions coincided with each other.
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