JP4695163B2

JP4695163B2 - Metal plate joining method, joining apparatus and hot rolling equipment

Info

Publication number: JP4695163B2
Application number: JP2008156137A
Authority: JP
Inventors: 健治堀井; 泰嗣芳村; 忠西野; 隆鴨志田; 貴義冨野; 文紀石川; 孝雄舟本; 隆益子; 健次郎成田; チョンゴンキム; ギチョルキム; チョンソブイ; ホァンギュホァン; ジョンシクイ; ジンヒキム
Original assignee: Hitachi Ltd; Posco Co Ltd
Current assignee: Hitachi Ltd; Posco Co Ltd
Priority date: 1999-12-14
Filing date: 2008-06-16
Publication date: 2011-06-08
Anticipated expiration: 2020-10-17
Also published as: JP2008213046A

Description

本発明は複数の金属板の接合装置、接合方法及び熱間圧延設備に係り、特に熱間圧延材を粗圧延機群及び仕上げ圧延機群にて圧延を行うに際し、短時間で熱間圧延材の接合を行い連続圧延を可能とする熱間圧延材の接合方法に関するものである。 The present invention relates to a joining apparatus, joining method, and hot rolling equipment for a plurality of metal plates, and in particular, when hot rolling material is rolled in a rough rolling mill group and a finishing rolling mill group, the hot rolled material is obtained in a short time. The present invention relates to a method for joining hot-rolled materials that enables continuous rolling.

金属板の熱間圧延設備で仕上げ圧延を連続化して生産性、品質の向上及び操業の自動化を実現しようとする要望は極めて強い。その鍵となる技術は、熱間圧延材(以下、バー材)の接合である。冷間圧延材の場合は、圧延材厚さが薄いため、溶接等により十分な強度を有する接合を施した連続圧延が可能である。しかし、熱間圧延材の場合は、厚さが厚く、また圧延材の温度が低下する前に圧延を終了させなければならないため、圧延速度(圧延材の送り速度)が冷間圧延機に比べ速く、溶接での接合が困難である。 There is a strong demand to achieve continuous improvement of productivity, quality and automation of operation by continuous rolling in a metal sheet hot rolling facility. The key technology is joining hot rolled materials (hereinafter referred to as bar materials). In the case of a cold-rolled material, since the rolled material thickness is thin, continuous rolling with sufficient strength by welding or the like is possible. However, in the case of hot rolled material, the rolling speed (rolling material feed rate) is higher than that of a cold rolling mill because the thickness is thick and the rolling must be finished before the temperature of the rolled material decreases. Fast and difficult to join by welding.

従来、バー材の接合方法として、電熱法、ガス加熱、溶削法及び摩擦法など多くの方式が提案されているが、いずれも接合に時間がかかりすぎるという欠点を有している。上述したように熱間圧延材の圧延速度が速いため、接合機を走行式にした場合は、バー材の接合が短時間に完了しないと接合機の走行距離が長くなり実現困難となる。また接合機を固定型にした場合は、バー材の厚みは通常２０〜５０mmと厚いため、バー材を蓄積するための巨大なルーパーが必要となる。従来のバー材接合の場合、接合前準備、押圧によるダレ、バリ除去などを含めて最短でも２０〜３０秒を要していた。 Conventionally, many methods such as an electric heating method, a gas heating method, a welding method, and a friction method have been proposed as methods for joining bar materials, but all have the disadvantage that it takes too much time for joining. As described above, since the rolling speed of the hot-rolled material is high, when the joining machine is a traveling type, if the joining of the bar material is not completed in a short time, the traveling distance of the joining machine becomes long and difficult to realize. Further, when the joining machine is a fixed type, the thickness of the bar material is usually as thick as 20 to 50 mm, so a huge looper for accumulating the bar material is required. In the case of conventional bar material joining, 20 to 30 seconds are required at the shortest including preparation before joining, sagging by pressing, and removal of burrs.

熱間圧延材の接合時間の短縮のための技術として、特許文献１に記載された技術が知られている。この技術は、先行圧延材と後行圧延材を重ねて、この２枚のバーを同時にせん断し、その過程で新生面同士で直接接触させ、強固な金属接合を得るというものである。 As a technique for shortening the joining time of the hot rolled material, a technique described in Patent Document 1 is known. In this technique, a preceding rolled material and a subsequent rolled material are overlapped, the two bars are sheared simultaneously, and the new surfaces are directly contacted in the process to obtain a strong metal joint.

特開平９−１７４１１７号公報JP 9-174117 A

特許文献１に記載された接合技術においては、一方にせん断刃とクランプ、他方に支持台を配置して、支持台とクランプとで重なり合った２枚のバーをクランプし、その状態でせん断刃を動作させて新生面同士を接合する。単純かつ短時間で接合を完了できるので、特に熱間圧延設備に好適な方式である。 In the joining technique described in Patent Document 1, a shearing blade and a clamp are arranged on one side, and a support base is arranged on the other side, two bars overlapped by the support base and the clamp are clamped, and the shearing blade is used in this state. Operate to join the new surfaces. Since joining can be completed simply and in a short time, this method is particularly suitable for hot rolling equipment.

しかし、接合された金属板の曲がりを最小としながら、短時間で十分な接合強度を得る上で改善すべき問題があった。また、支持台側が材料をクランプするために接合後に残るクロップ長が長くなる問題があった。また、支持台側に金属板が曲がるため耐材料通板性を低下させる問題があった。 However, there has been a problem to be improved in order to obtain sufficient bonding strength in a short time while minimizing the bending of the bonded metal plates. In addition, since the support side clamps the material, there is a problem that the crop length remaining after joining becomes long. In addition, since the metal plate is bent on the support base side, there is a problem in that the material resistance to passing through is lowered.

本発明の目的は、上記のような従来技術の問題点を克服し、十分な接合強度が得られ、かつクロップ長を短くできる金属板の接合法及び装置を提供することに有る。また、この接合方式をオンラインに適用でき、かつライン長を短縮できる熱間圧延設備を提供することに有る。 An object of the present invention is to provide a metal plate joining method and apparatus capable of overcoming the above-described problems of the prior art, obtaining sufficient joining strength, and shortening the crop length. Another object of the present invention is to provide a hot rolling facility that can apply this joining method online and reduce the line length.

上記目的を達成するため本発明は、金属板の接合予定部を重ね合わせ、この重ね合わせ部をはさんで金属板の両側にせん断刃を当て、重ね合わせ部を間に挟み込むように前記せん断刃を相対移動しながら、その剪断過程で生じる互いの剪断面の塑性流動変形を利用して前記重ね合わせ部に接合部を形成するようにした金属板の接合方法である。 In order to achieve the above object, the present invention provides a method for superimposing a joining portion of a metal plate, applying a shearing blade to both sides of the metal plate across the overlapping portion, and sandwiching the overlapping portion therebetween. Is a metal plate joining method in which a joining portion is formed in the overlapped portion by utilizing plastic flow deformation of each shearing surface generated in the shearing process while relatively moving.

本発明の接合方法では、対向するせん断刃による剪断過程で生じる剪断面に、互いに押し付け合うような押圧力を作用させている。この押圧力はせん断刃と材料の接触部の抵抗によって発生する。これにより、接合部に圧縮力を作用させて接合部の断面積を縮小し、接合強度を向上することができる。剪断面に前記押圧力を作用させた場合、接合部またはその接合面は金属板の厚み方向に対して傾斜する。この傾斜角は７５°以下とするのが良い。 In the joining method of the present invention, pressing forces that press against each other are applied to the shearing surfaces generated in the shearing process by the opposing shearing blades. This pressing force is generated by the resistance of the contact portion between the shear blade and the material. Thereby, compressive force is made to act on a junction part, the cross-sectional area of a junction part can be reduced, and joining strength can be improved. When the pressing force is applied to the shearing surface, the bonded portion or the bonded surface is inclined with respect to the thickness direction of the metal plate. This inclination angle is preferably 75 ° or less.

接合部を圧縮する押圧力の発生方法の一つにせん断刃をオーバーラップする方法がある。ここで、せん断刃のオーバーラップとは、せん断刃の刃先の移動軌跡の延長線が対向するせん断刃の刃先の内側になるように移動する方法である。上面から見ると、少なくとも接合完了時におけるせん断刃同士の一部が重なって見える。 One method for generating a pressing force to compress the joint is to overlap the shearing blades. Here, the overlap of the shearing blade is a method of moving so that the extension line of the moving locus of the cutting edge of the shearing blade is inside the cutting edge of the opposing shearing blade. When viewed from above, at least a part of the shearing blades appear to overlap each other when the joining is completed.

図２３に、複数のオーバーラップ例を示す。（ａ）は上下のせん断刃３，４が板厚方向に平行する場合で、上下のせん断刃の移動軌跡の延長線のギャップεがオーバーラップ量である。（ｂ），（ｃ）は上下のせん断刃３，４が板厚方向に斜めの移動軌跡の例で、傾斜が逆向きになっている。オーバーラップ量は金属板の長手方向に対して、０．１ｍｍ〜１５ｍｍの範囲とするのが良い。 FIG. 23 shows a plurality of overlapping examples. (A) is the case where the upper and lower shearing blades 3 and 4 are parallel to the plate thickness direction, and the gap ε of the extension line of the movement trajectory of the upper and lower shearing blades is the overlap amount. (B), (c) is an example of a moving locus in which the upper and lower shearing blades 3, 4 are slanted in the thickness direction, and the inclination is opposite. The overlap amount is preferably in the range of 0.1 mm to 15 mm with respect to the longitudinal direction of the metal plate.

いずれの場合も、移動軌跡に沿ったせん断刃の剪断過程で、剪断面同士を互いに押し付け合う押圧力が発生するので、接合前のハッチング部が接合後のハッチング部のように圧縮される。このとき、接合完了後の接合部または接合面（対向するせん断刃の刃先間を結んだ面）は、板厚方向に対して必ず斜めになる。 In either case, in the shearing process of the shearing blade along the movement trajectory, a pressing force pressing the shearing surfaces against each other is generated, so that the hatched part before joining is compressed like the hatched part after joining. At this time, the joined portion or joined surface after joining is completed (a surface connecting the blade edges of the opposing shearing blades) is always inclined with respect to the plate thickness direction.

接合部を圧縮する押圧力の発生方法としては、互いの移動軌跡の延長線がオーバーラップ量εで平行する場合（図２３）以外に、一方または両方の移動軌跡を斜めにして交差させてもよい。これによっても、接合部に圧縮力が作用し、また形成された接合部または接合面は斜めになる。 As a method of generating the pressing force for compressing the joint, in addition to the case where the extension lines of the movement trajectories are parallel to each other by the overlap amount ε (FIG. 23), one or both movement trajectories may be crossed obliquely. Good. Also by this, the compressive force acts on the joint portion, and the formed joint portion or joint surface is inclined.

本発明では、この押圧力を顕著に増大させる手段として、前記せん断刃の先端面に剪断力に抵抗する反発力、つまり前記押圧力と同様の押圧力を発生する突起部（抵抗）を設けている。この場合は、突起部による押圧力が大きいので、せん断刃が上又は下の一方で、他方は支持台となる構成でも、従来に比べると接合強度を向上できる。 In the present invention, as a means for remarkably increasing the pressing force, a repulsive force that resists the shearing force, that is, a protrusion (resistance) that generates a pressing force similar to the pressing force is provided on the tip surface of the shearing blade. Yes. In this case, since the pressing force by the protrusion is large, even when the shear blade is on the upper side or the lower side and the other is a support base, the bonding strength can be improved as compared with the conventional case.

前記突起部は、例えば前記金属板の厚み方向の頂きと板幅方向の幅をもつ三角柱状に形成される。また、前記突起部の前記剪断面に対向する面（突起部面）は、前記金属板の水平面に対してなす突起角（θ_D）が３０°以上、かつ前記刃先移動軌跡に平行な線と前記水平面のなす角度以下に形成するのが良い。 For example, the protrusion is formed in a triangular prism shape having a crest in the thickness direction of the metal plate and a width in the plate width direction. Further, a surface (projection surface) of the projection that faces the shear surface has a projection angle (θ _D ) formed with respect to the horizontal plane of the metal plate that is 30 ° or more and a line parallel to the blade tip movement locus. It is good to form below the angle which the said horizontal plane makes.

前記せん断刃の移動量（ストローク）は、前記剪断過程の塑性流動変形が有効に作用するとともに前記重ね合わせ部の全てが切断されることのない範囲とするのが望ましく、前記金属板の板厚の５０％〜１５０％の範囲となる。 The amount of movement (stroke) of the shearing blade is preferably within a range in which plastic flow deformation in the shearing process acts effectively and the entire overlapping portion is not cut, and the thickness of the metal plate Of 50% to 150%.

これによれば、前記剪断刃を押し込みながら剪断する際に、重ね合わされた金属板を完全には切断しないで接合することができるので、押込のためのエネルギーを低減できる。また、ストロークを板厚以上にすると、接合の結果として生じるクロップの連結が僅かまたは０になるので、後処理が容易になる。 According to this, when shearing while pushing the shearing blade, the stacked metal plates can be joined without being completely cut, so that the energy for pushing can be reduced. Further, if the stroke is greater than or equal to the plate thickness, the crop connection resulting from joining becomes slightly or zero, and post-processing becomes easy.

また、上下の剪断刃による剪断過程で、前記押圧力の発生に対応して、前記重ね合わせ部を挟み込むようにクランプ力を加える。このクランプ力によって、重ね合わせ部を保持し、押圧力による接合部の圧縮を有効に作用させる。 In addition, a clamping force is applied so as to sandwich the overlapping portion in response to the generation of the pressing force in the shearing process by the upper and lower shearing blades. By this clamping force, the overlapping portion is held, and compression of the joint portion by the pressing force is effectively applied.

本発明の上記した金属板の接合装置を、熱間圧延材を圧延する粗圧延機と仕上げ圧延機の間に適用した。前記接合装置は、前記先行バーと後行バーの接合予定部を重ね合わせる重ね合せ機構と、重ね合わせた両バーの上下から押し込んで剪断しながら接合する上下のせん断刃を持つ接合機構と、前記せん断刃に押し込みの動作を行わせるせん断刃駆動機構を設けている。 The above-described metal plate joining apparatus of the present invention was applied between a rough rolling mill for rolling a hot rolled material and a finish rolling mill. The joining device includes a superposition mechanism that superimposes the planned joining portions of the preceding bar and the succeeding bar, a joining mechanism that has upper and lower shearing blades that join while pushing and shearing from the top and bottom of both the superposed bars, A shearing blade driving mechanism is provided for causing the shearing blade to perform a pushing operation.

前記せん断刃は、前記バーの厚み方向に対して斜めになる刃先移動軌跡とほぼ一致した刃先角（θｘ）を有し、かつ前記せん断刃の先端面に押し込み時に前記バーにくい込む突起部を設けている。この突起部は、前記押圧力を増大させるとともに、バー移動への追従を容易にする。 The shearing blade has a cutting edge angle (θx) that substantially coincides with a cutting edge movement locus that is inclined with respect to the thickness direction of the bar, and is provided with a protrusion that is difficult to press the bar when pushed into the tip surface of the shearing blade. ing. This protrusion increases the pressing force and facilitates following the bar movement.

前記せん断刃駆動機構は、上下の前記せん断刃を所定の待機位置に待機させ、両バーの重ね合わせ部が前記接合機構に到達したときに前記せん断刃の押し込みを開始し、前記せん断刃が接合が完了する所定の押し込みストロークを移動した時に前記せん断刃を後退させて前記待機位置に戻すサイクリックな動作と、前記せん断刃が前記バーと接触している間はバー移動に従って前記せん断刃を移動させる同調動作とを行うように構成されている。 The shear blade drive mechanism causes the upper and lower shear blades to stand by at a predetermined standby position, and starts pushing the shear blade when the overlapping portion of both bars reaches the joining mechanism. When the predetermined pushing stroke is completed, the shearing blade is retracted to return to the standby position, and the shearing blade is moved according to the bar movement while the shearing blade is in contact with the bar. And a tuning operation to be performed.

本発明の接合方式は上下の前記せん断刃と大きな押圧力により、接合時間が十分に短いので、前記せん断刃による接合過程はバーの進行に同調しながら実現でき、スムーズな接合が可能になる。 In the joining method of the present invention, the joining time is sufficiently short due to the upper and lower shearing blades and a large pressing force, so that the joining process by the shearing blade can be realized while synchronizing with the progress of the bar, and smooth joining becomes possible.

また、前記重ね合せ機構は、先行バーの後端が所定位置に達したとき、後行バーの速度を上昇して両者を重ね、重ね合わせ部が所定長に達したときに後行バーの速度を元に戻すように構成されているので、ミル間の速度差にも対応できる。さらに、前記重ね合わせ部には先行バーまたは後行バーの少なくとも一方のオミット部が含まれるようにしている。これにより元もとオミット部として捨てられる部位が接合後のクロップとなるので、材料の歩留まりを向上できる。 Further, the superposition mechanism increases the speed of the succeeding bar when the trailing end of the preceding bar reaches a predetermined position and superimposes both, and the speed of the succeeding bar when the overlapping portion reaches a predetermined length. Since it is configured to restore the original value, it is possible to cope with a speed difference between mills. Further, the overlapping portion includes at least one of the preceding bar and the trailing bar. As a result, the portion originally discarded as the omit portion becomes a crop after joining, so that the yield of the material can be improved.

また、前記重ね合わせ部の前行程で前記重ね合わせ部となる先行バー及び後行バーの部位をデスケーリングすることで、熱間圧延材の不要な熱放散を回避できる。さらに、デスケーリング後、２０秒以内に重ね合わせを完了することで、デスケーリング後に成長する接合部のスケール厚さを圧延で破断に至らない厚さにすることができる。 In addition, unnecessary heat dissipation of the hot-rolled material can be avoided by descaling the portions of the preceding bar and the succeeding bar that become the overlapping portion in the previous stroke of the overlapping portion. Furthermore, by completing superposition within 20 seconds after descaling, the scale thickness of the joint that grows after descaling can be reduced to a thickness that does not cause fracture by rolling.

本発明の熱間圧延設備によれば、接合時間が短いのでバーとのスムーズな同調が容易で、接合機のオンライン組込によるバー材の連続化が可能になる。また、速度調整のためのルーパーを省略することができるなど、圧延ライン長を短縮できる。 According to the hot rolling equipment of the present invention, since the joining time is short, smooth synchronization with the bar is easy, and continuation of the bar material by online incorporation of the joining machine is possible. In addition, the length of the rolling line can be shortened, for example, the looper for speed adjustment can be omitted.

本発明の金属板の接合方法、接合装置によれば、金属板の厚み方向に対し両側から剪断刃を互いにラップさせて押し込む。さらに、剪断刃に突起部を設けているので、剪断過程で剪断面同士を互いに押し合う押圧力を発生させ、接合部が圧縮されて接合強度を向上でき、接合時間も短縮できる。また、上下から対向して剪断刃を相対移動させるので、接合時間が短縮できるのみならず、接合後の金属板の変形も防止できる。 According to the metal plate joining method and the joining apparatus of the present invention, the shearing blades are wrapped and pushed in from both sides in the thickness direction of the metal plate. Furthermore, since the protruding portion is provided on the shearing blade, a pressing force for pressing the shearing surfaces against each other is generated in the shearing process, the joining portion is compressed, the joining strength can be improved, and the joining time can be shortened. Further, since the shearing blade is moved relative to each other from above and below, not only the joining time can be shortened, but also deformation of the metal plate after joining can be prevented.

本発明によれば、粗圧延機と熱間圧延機の間に先行バーと後行バーをバーの進行に追従にしながら接合する上記の接合装置を組み込んだので、圧延材をオンラインで連続化できる熱間圧延設備を提供できる。また、バーの進行に追従できるコンパクトな構成、及びルーパーの省略可能などによりライン長を短縮できる。さらに、バーのオミット部を重ね合わせる機構により、接合後に捨てられる材料の無駄を低減できる。 According to the present invention, since the above joining device for joining the preceding bar and the succeeding bar while following the progress of the bar is incorporated between the rough rolling mill and the hot rolling mill, the rolled material can be continued online. Hot rolling equipment can be provided. Further, the line length can be shortened by a compact configuration capable of following the progress of the bar and the omission of the looper. Furthermore, the waste of the material thrown away after joining can be reduced by the mechanism of overlapping the omit portions of the bar.

本発明の金属板の接合装置の一実施例について図面を参照しながら詳細に説明する。接合対象の金属板は新たに加熱の必要がない熱間圧延材とする。図１は接合装置の基本構成を示す模式図で、接合開始位置の状態を示している。 An embodiment of a metal plate joining apparatus of the present invention will be described in detail with reference to the drawings. The metal plate to be joined is a hot rolled material that does not require any new heating. FIG. 1 is a schematic diagram showing the basic configuration of the joining apparatus, and shows the state of the joining start position.

熱間圧延材の上バー１と下バー２が重なり合った状態を、突起３０のある上刃物３と突起４０のある下刃物４が挟み込んでいる（突起３０，４０がバー表面に接触した状態）。上刃物３の突起３０、下刃物４の突起４０は互いに向い合う刃物端面の任意の位置（中央部など）の全幅方向に設けられた三角柱状の突起で、後述のように、刃物３，４の移動過程でせん断面同士を互いに押しつける押圧力を発生する。なお、突起３０，４０の突起高さはＬ４とする。 The state in which the upper bar 1 and the lower bar 2 of the hot-rolled material are overlapped is sandwiched between the upper blade 3 with the protrusions 30 and the lower blade 4 with the protrusions 40 (the state where the protrusions 30 and 40 are in contact with the bar surface). . The projections 30 of the upper cutter 3 and the projections 40 of the lower cutter 4 are triangular prism-shaped projections provided in the full width direction at arbitrary positions (center portion, etc.) of the cutter end faces facing each other, as will be described later. A pressing force is generated to press the shearing surfaces against each other during the movement process. The protrusion height of the protrusions 30 and 40 is L4.

上クランプ５、下クランプ６もそれぞれ上バー１及び下バー２に接触した状態となっている。上クランプ５は上クランプ支持装置７に、下クランプ６は下クランプ支持装置８により、任意に設定された油圧などで支えられる。上刃物３と上クランプ５と上クランプ支持装置７は上刃物集合体９として一体的に形成されている。また、下刃物４と下クランプ６と下クランプ支持装置８は下刃物集合体１０として一体的に形成されている。刃物３，４は図示していない外部から押込力Ｆ_Dを加えられて、押し込みストロークを動作する。また、上下クランプ５，６はクランプ支持力Ｆ_Tを加えられる。 The upper clamp 5 and the lower clamp 6 are also in contact with the upper bar 1 and the lower bar 2, respectively. The upper clamp 5 is supported by the upper clamp support device 7, and the lower clamp 6 is supported by the lower clamp support device 8 by an arbitrarily set hydraulic pressure or the like. The upper cutter 3, the upper clamp 5, and the upper clamp support device 7 are integrally formed as an upper cutter assembly 9. The lower cutter 4, the lower clamp 6, and the lower clamp support device 8 are integrally formed as a lower cutter assembly 10. Knives 3 and 4 is applied to push force F _D from the outside which is not shown, operates the push stroke. Further, the upper and lower clamp 5 and 6 is applied a clamping support force F _T.

上刃物集合体９及び下刃物集合体１０はハウジング１０１に取り付けられ、上刃物集合体９はハウジング１０１のポスト部１０１ａ，ｂに案内され、バー１，２の厚み方向に対して斜めに移動するように設けられている。上刃物集合体９及び下刃物集合体１０は図示の点Ａに対し、後述するリンク機構により、接近・離反できるように構成され、上バー１、下バー２を挟んで刃物集合体９，１０が互いに接近または離反される。 The upper blade assembly 9 and the lower blade assembly 10 are attached to the housing 101, and the upper blade assembly 9 is guided by the post portions 101a and 101b of the housing 101 and moves obliquely with respect to the thickness direction of the bars 1 and 2. It is provided as follows. The upper cutter assembly 9 and the lower cutter assembly 10 are configured so as to be able to approach and separate from a point A shown in the figure by a link mechanism described later, and the cutter assemblies 9, 10 with the upper bar 1 and the lower bar 2 interposed therebetween. Are approached or separated from each other.

上刃物集合体９の接合過程での移動は矢印方向となり、また、接合後は矢印と反対方向に動作して退避する。下刃物４と下クランプ６と下クランプ支持装置８も下刃物集合体１０として、上刃物集合体９と同様に構成されている。なお、下刃物４または上刃物３の一方のみが移動される構成とすることも可能である。また、上下クランプは厚み方向に移動し、上刃物３と下刃物４がその刃先角に沿って斜めに移動するようにしてもよい。 The movement of the upper cutter assembly 9 during the joining process is in the direction of the arrow, and after joining, the upper cutter assembly 9 moves in the direction opposite to the arrow and retracts. The lower cutter 4, the lower clamp 6, and the lower clamp support device 8 are also configured as the lower cutter assembly 10 in the same manner as the upper cutter assembly 9. It is also possible to adopt a configuration in which only one of the lower cutter 4 or the upper cutter 3 is moved. Further, the upper and lower clamps may move in the thickness direction, and the upper cutter 3 and the lower cutter 4 may be moved obliquely along the cutting edge angle.

図２は接合装置の接合完了状態を示す。上刃物３と下刃物４がバー１，２を剪断する過程で、バー１，２は互いの剪断面で接合されてバー連続体１３が形成される。接合動作の完了位置（Ｌ２）ではバー連続体１３が形成され、上クロップ１１と下クロップ１２が分離または分離し出している。この後、矢印方向に動作させて図１の開始位置（Ｌ１）方向に退避させる。上刃物３または下刃物４の先端面３２，４２がバー１、２に接触した位置、つまり突起部３０，４０がその高さＬ４だけバーにくい込んだ状態から接合完了位置まで移動する距離を押し込みストローク（Ｌ３＝Ｌ２−Ｌ１−Ｌ４）と呼ぶ。 FIG. 2 shows a joining completion state of the joining apparatus. In the process in which the upper cutter 3 and the lower cutter 4 shear the bars 1 and 2, the bars 1 and 2 are joined to each other at the shearing surface to form a bar continuous body 13. In the joining operation completion position (L2), the bar continuum 13 is formed, and the upper crop 11 and the lower crop 12 are separated or separated. Thereafter, the actuator is operated in the direction of the arrow and retracted in the direction of the start position (L1) in FIG. The position where the tip surfaces 32 and 42 of the upper cutter 3 or the lower cutter 4 are in contact with the bars 1 and 2, that is, the distance that the protrusions 30 and 40 move from the state where the bar is harder by the height L4 to the joining completion position is pushed in. It is called a stroke (L3 = L2-L1-L4).

上記のように、本実施例の接合装置は上バーと下バーの重ね合わせ部をはさむ両側の対向位置に刃物３，４を配置し、対向した刃物同士が重ね合わせ部を挟み込むように相対的に移動する機構を備えた。なお、重ね合わせ部は、刃物３，４の両外側に配置されるクランプ５，６の支持が可能となる長さを有している。また、接合過程の刃物の移動軌跡はバー厚み方向に対して傾斜角を持たせ、接合線が厚み方向に対して傾斜するようにした。さらに、バー面と接触する刃物面に三角柱状の突起を設け、移動過程で三角形の一面からせん断面同士を互いに押し付け合う押圧力を発生させるようにした。 As described above, in the joining device of this embodiment, the blades 3 and 4 are arranged at opposing positions on both sides of the overlapping portion of the upper bar and the lower bar, and the opposed blades sandwich the overlapping portion relative to each other. Equipped with a mechanism to move to. The overlapping portion has a length that enables support of the clamps 5 and 6 disposed on both outer sides of the blades 3 and 4. In addition, the movement trajectory of the blade in the joining process has an inclination angle with respect to the bar thickness direction so that the joining line is inclined with respect to the thickness direction. Furthermore, a triangular prism-shaped protrusion is provided on the blade surface that comes into contact with the bar surface, and a pressing force is generated to press the shearing surfaces against each other from one surface of the triangle during the movement process.

図３は刃物形状と接合完了状態での幾何学的関係を示す説明図である。突起３０，４０をもつ刃物３，４の動作は、矢印方向の刃先移動軌跡となる。ここで、θ_Dは刃物３，４の突起角、θ_Jは接合部傾斜角、θ_Xは刃先開き角と定義する。上刃物３は先端面３２をバー１に接触し、刃先開き角θ_Xによる側端面３１の傾斜とほぼ等しい傾斜方向、つまり矢印方向に移動される。下刃物４も同様である。ここで、θ_Xと矢印方向は完全に一致させる必要はなく、通常は数度の差がある。 FIG. 3 is an explanatory diagram showing the geometrical relationship between the shape of the blade and the completed state. The operation of the blades 3 and 4 having the protrusions 30 and 40 becomes a blade edge movement locus in the direction of the arrow. Here, θ _D is defined as the protrusion angle of the blades 3, 4, θ _J is defined as the joint inclination angle, and θ _X is defined as the blade edge opening angle. The upper blade 3 is brought into contact with the bar 1 at the front end surface 32 and is moved in the inclination direction substantially equal to the inclination of the side end surface 31 by the blade edge opening angle θ _X , that is, in the arrow direction. The same applies to the lower cutter 4. Here, θ _X and the direction of the arrow do not need to coincide completely, and there is usually a difference of several degrees.

押込力Ｆ_D及びクランプ支持力Ｆ_Tが加えられ、刃物３，４の刃先３３，４３が押し込まれ、バー材１，２が刃先開き角θ_Xに沿ってせん断され、互いのせん断面が塑性流動変形して接合される。このとき、刃先開き角θ_Xを９０°より大きくし、刃物を斜めに押し込む。 Added are pushing force F _D and the clamping support force F _T, the cutting edge 33, 43 of the cutter 3, 4 is pushed, the bar member 1, 2 is sheared along the edge open angle theta _X, shear plane of each other plastically It is deformed and joined. At this time, the blade edge opening angle θ _X is made larger than 90 °, and the blade is pushed obliquely.

さらに、本実施例では刃物３，４に突起３０，４０を設けているので、その突起角θ_Dで決まる突起面３４，４４の直角方向に押圧力Ｆ_Pが発生し、その水平分力がＦ_Hとなる。この水平力Ｆ_Hが圧縮部の圧縮力として作用し、水平力Ｆ_Hを支持する力としてクランプ支持力Ｆ_Tが加えられる。 Furthermore, since in this embodiment has a projection 30, 40 provided on the tool 3 and 4, the pressing force F _P is generated in the perpendicular direction of the projection surface 34, 44 which is determined by the projection angle theta _D, the horizontal force is F _H. This horizontal force F _H acts as a compression force of the compression portion, and a clamp support force _FT is applied as a force for supporting the horizontal force F _H.

ここで、クランプ力Ｆ_Tと水平力Ｆ_H及び突起角θ_Dの関係を説明する。上クランプ５と上クロップ１１との間の摩擦係数μ_T1、上クロップ１１とバー連結体１３との間の摩擦係数μ_T2、下刃物４とバー連結体１３との間の摩擦係数μ_Dとする。μ_T1及びμ_T2の小さい方をμ_Tとすると、Ｆ_HはＦ_Tとθ_Dの関数として（１）式のように記述できる。 Here, the relationship between the clamping force F _T , the horizontal force F _H, and the protrusion angle θ _D will be described. Friction coefficient between the upper clamp 5 and the upper crop 11 mu _T1, the friction coefficient mu _T2 between the upper crop 11 and a bar connecting member 13, and the friction coefficient mu _D between the lower tool 4 and a bar connecting member 13 To do. When a person mu small _T1 and mu _T2 and μ _T, F _H can be described as (1) as a function of F _T and theta _D.

Ｆ_H＝Ｆ_T(μ_T(１−sin2θ_D＋μ_Dsinθ_Dcosθ_D)＋μ_D)／(１−sin2θ_D) …（１）
図４は水平力の倍率Ｆ_H／Ｆ_Tと突起角θ_Dの関係を示す。この関係曲線はμ_T及びμ_Dを０．５としたもので、突起角θ_Dが３０°を超えるとＦ_Tに対する水平力Ｆ_Hの倍率が急上昇する。このことから、接合部を圧縮する水平力を高める場合、刃物３，４の突起角θ_Dを３０°以上にすることが望ましい。 F _H = F _T (μ _T (1-sin 2θ _D + μ _D sin θ _D cos θ _D ) + μ _D ) / (1-sin 2θ _D ) (1)
FIG. 4 shows the relationship between the horizontal force magnification F _H / F _T and the protrusion angle θ _D. This relationship curve is such that μ _T and μ _D are 0.5, and when the projection angle θ _D exceeds 30 °, the magnification of the horizontal force F _H with respect to F _T increases rapidly. Therefore, when the horizontal force for compressing the joint portion is increased, it is desirable that the projection angle θ _D of the blades 3 and 4 is 30 ° or more.

図５は刃物突起の突起角θ_Dの上限を説明する図である。先行バー２と下刃物４との関係を示し、刃物４の点線は突起部がバー２に接した状態、実線は突起がバーにくい込んだ状態を示している。バー２の板厚方向に対して斜めの刃先移動軌跡１００のように刃物４の刃先４３が移動するとき、図示のように突起部の突起角θ_Dが刃先移動軌跡１００に平行な線１００'の角度θより大きいと、空隙部ａが存在する。この空隙部ａは接合部に作用する圧縮力を開放するように作用するので、接合部の接合強度が低下する。 FIG. 5 is a diagram for explaining the upper limit of the projection angle θ _D of the blade projection. The relationship between the preceding bar 2 and the lower cutting tool 4 is shown. The dotted line of the cutting tool 4 indicates a state in which the protruding portion is in contact with the bar 2, and the solid line indicates a state in which the protruding portion is hard to be barred. When the blade edge 43 of the blade 4 moves like a blade edge movement locus 100 oblique to the plate thickness direction of the bar 2, a line 100 ′ in which the protrusion angle θ _D of the protrusion is parallel to the blade edge movement locus 100 as shown in the figure. When the angle θ is larger than the angle θ, the void portion a exists. Since this gap | interval part a acts so that the compressive force which acts on a junction part may be open | released, the joining strength of a junction part falls.

よって、空隙部ａを生じない角度θ、刃先移動軌跡に平行な角度が突起角θ_Dの上限となる。つまり、突起角θ_Dの範囲は、刃物がバー面に接触して押し込む刃面４２に対して３０°〜刃先移動軌跡に平行になる角度（本実施例では、接合部傾斜角θ_Jと同じになる）とするのが良い。 Therefore, the angle θ that does not generate the gap portion a and the angle parallel to the blade tip movement locus are the upper limit of the protrusion angle θ _D. In other words, the range of the projection angle θ _D is the same as the angle of inclination of the blade surface 42 that the blade comes into contact with and pushes against the bar surface from 30 ° to the blade tip movement locus (in this embodiment, the joint inclination angle θ _J). Is good).

図６は接合部傾斜角θ_Jと接合破断強度の関係を示す。図中の○印は接合部がその後の圧延で破断に至らない場合、×印は破断に至った場合で、接合部傾斜角θ_Jが大きいほど破断しやすいことを示している。最適な角度θ_Jは、刃物同士のラップ量、押し込みストローク量などの接合条件によって変化するが、傾斜角度θ_Jが大きいほど、すなわち接合面が斜めになるほど接合部の強度が高まる。要求される接合部破断強度が３．０kg／mm²程度の場合、圧延破断に至らない接合部傾斜角θ_Jは７５°以下である。 FIG. 6 shows the relationship between the joint inclination angle θ _J and the joint breaking strength. In the figure, a circle mark indicates that the joint portion does not break by subsequent rolling, and a cross mark indicates that the breakage occurs, and the larger the joint tilt angle θ _J is, the more easily the fracture occurs. The optimum angle θ _J varies depending on the joining conditions such as the amount of lap between blades and the amount of indentation stroke, but the strength of the joint increases as the tilt angle θ _J increases, that is, as the joint surface becomes oblique. When the required joint fracture strength is about 3.0 kg / mm ² , the joint inclination angle θ _J that does not lead to rolling fracture is 75 ° or less.

図７は刃先開き角θ_Xと接合部傾斜角θ_Jの関係を示す。図示のように、刃先開き角θ_Xを大きくすると接合部傾斜角θ_Jを小さくでき、接合部の破断強度が大きくなる。刃先開き角θ_Xが９０°以上であれば、接合部傾斜角θ_Jを容易に７５°以下にできる。 FIG. 7 shows the relationship between the blade edge opening angle θ _X and the joint inclination angle θ _J. As shown in the figure, when the blade opening angle θ _X is increased, the joint inclination angle θ _J can be reduced, and the breaking strength of the joint is increased. If the blade opening angle θ _X is 90 ° or more, the joint inclination angle θ _J can be easily made 75 ° or less.

ところで、図３における刃物３及び刃物４はオーバーラップがないと、刃先３３と刃先４３の刃先移動軌跡は同一線上となる。一方、オーバーラップ量が大きくなるほど接合部傾斜角θ_Jが小さくなる。図７における△印はオーバーラップが０．１mm、○印はオーバーラップが３mm、□印はオーバーラップが１０mmのときの値である。そこで、刃物３と刃物４の刃方向に直線的に相対移動し、かつ双方の刃先移動軌跡が相手の内側となるようにオーバーラップさせる。つまり、押し込まれた状態で、上刃物３の真上から見て下刃物４の一部と重なる配置にする。 By the way, if the blade 3 and the blade 4 in FIG. 3 do not overlap, the blade tip movement trajectory of the blade tip 33 and the blade tip 43 is on the same line. On the other hand, the joint inclination angle θ _J decreases as the overlap amount increases. In FIG. 7, Δ marks are values when the overlap is 0.1 mm, ○ marks are when the overlap is 3 mm, and □ marks are values when the overlap is 10 mm. Therefore, the blade 3 and the blade 4 are linearly moved relative to each other in the blade direction and overlapped so that the movement paths of the two blade edges are inside the counterpart. That is, it is arranged so as to overlap a part of the lower cutter 4 when viewed from directly above the upper cutter 3 in the pushed state.

図８はオーバーラップのある接合装置の模式図で、図１と同様の構成を省略的に示してある。（ａ）は接合開始直後で、刃物３，４の突起がバーに押し込まれ、刃面３２，４２がバー面に接触した状態、（ｂ）は押し込みストロークＬ３だけ移動した接合完了状態を示している。上刃物３と下刃物４の移動方向は同じで、歯先移動軌跡の延長線がε１だけオーバーラップするように配置されている。（ａ）の状態で、菱形状のハッチング部分は（ｂ）に至る接合過程で圧縮される。この圧縮された部分の反発力が接合部に圧縮力として作用する。このとき、刃物３，４の突起３０，４０による押圧力は接合部に作用する圧縮力を支えるように作用する。 FIG. 8 is a schematic view of an overlapping joining apparatus, and the same configuration as that in FIG. 1 is omitted. (A) is a state immediately after the start of joining, in which the projections of the blades 3 and 4 are pushed into the bar and the blade surfaces 32 and 42 are in contact with the bar surface. Yes. The movement directions of the upper cutter 3 and the lower cutter 4 are the same, and the extension lines of the tooth tip movement locus are arranged to overlap each other by ε1. In the state of (a), the diamond-shaped hatched portion is compressed in the joining process leading to (b). The repulsive force of this compressed part acts as a compressive force on the joint. At this time, the pressing force by the projections 30 and 40 of the blades 3 and 4 acts to support the compressive force acting on the joint.

このように、接合部に圧縮力が作用することで、結果的に接合強度が大きくなる。鉄系材料を接合する場合、一般的に必要とされる接合強度を得るためには、オーバーラップ部分が被接合金属板の長手方向に対して０.１mm以上であることが望ましい。なお、アルミ材などの柔らかい材料では、オーバーラップ量が０でも（オーバーラップ量＜０では、本発明の接合は不可となる）一定の接合強度は確保できる。一方、オーバーラップ量の上限は以下のようになる。 As described above, the compressive force acts on the joint, resulting in an increase in joint strength. When joining an iron-based material, in order to obtain generally required joining strength, it is desirable that the overlap portion is 0.1 mm or more with respect to the longitudinal direction of the metal plates to be joined. In addition, with a soft material such as an aluminum material, even if the overlap amount is 0 (when the overlap amount <0, the bonding according to the present invention is not possible), it is possible to ensure a certain bonding strength. On the other hand, the upper limit of the overlap amount is as follows.

図８（ａ）に示すハッチング部、つまり圧縮される面積は、オーバーラップ量が１５ｍｍ、バー厚みが３０ｍｍの場合に４５０ｍｍ²となる。一方、突起部で囲まれる面積はおよそ３０×３０×２＝１８００ｍｍ²であり、接合過程で４５０／１８００＝２５％の圧縮変形を接合部付近に生じさせたことになる。 The hatched portion shown in FIG. 8A, that is, the area to be compressed, becomes 450 mm ² when the overlap amount is 15 mm and the bar thickness is 30 mm. On the other hand, the area surrounded by the protrusions is approximately 30 × 30 × 2 = 1800 mm ² , and 450/1800 = 25% compressive deformation was caused in the vicinity of the joint in the joining process.

文献「板圧延の理論と実際」に掲載の応力−ひずみ曲線（図７．５）によれば、接合温度が８００〜１２００℃の高温では、２５％のひずみがあれば、そのときの圧縮応力はほぼ上限となる。また、オーバーラップ量を余り大きくすると、接合装置にかかる負荷が過大となり、刃物の刃先や突起部の耐摩耗性が低下する。従って、オーバーラップ量の上限は１５ｍｍとするのが望ましい。 According to the stress-strain curve (Fig. 7.5) published in the document "Theory and practice of plate rolling", if the joining temperature is 800-1200 ° C and there is a strain of 25%, the compressive stress at that time Is almost the upper limit. Further, if the overlap amount is excessively large, the load applied to the joining device becomes excessive, and the wear resistance of the cutting edge and the projection of the blade is lowered. Therefore, the upper limit of the overlap amount is desirably 15 mm.

ここで、突起３０，４０はバー１，２にくい込むときに、くい込んだ部分を圧縮し、この圧縮が接合部５０へ押圧力として作用する。よって、オーバーラップによる押圧力と相俟ってより接合強度を向上できる。 Here, when the protrusions 30 and 40 are inserted into the bars 1 and 2, the inserted portions are compressed, and this compression acts as a pressing force on the joint 50. Therefore, joint strength can be further improved in combination with the pressing force due to the overlap.

図９は刃物の押し込みストロークの説明図で、（ａ）は最小値、（ｂ）は最大値を示している。一般に、接合部の強度はほぼ母材強度に等しい。一方、接合部は接合後に圧延され巻取られるまでに破断しないことが必要条件で、そのためには母材の１／２程度の強度があれば十分である。接合部に母材の１／２程度の強度を持たせるために、押し込みストロークの最小値は母材厚ｔの１／２（０．５ｔ）、最大値は母材厚ｔの１．５ｔとなる。 FIG. 9 is an explanatory diagram of the pushing stroke of the cutter, where (a) shows the minimum value and (b) shows the maximum value. In general, the strength of the joint is approximately equal to the strength of the base material. On the other hand, it is a necessary condition that the joined portion is not broken before being rolled and wound after joining, and for that purpose, a strength of about ½ of the base material is sufficient. In order to give the joint part about half the strength of the base material, the minimum value of the pushing stroke is 1/2 (0.5 t) of the base material thickness t, and the maximum value is 1.5 t of the base material thickness t. Become.

図１０は他の実施例による接合装置の模式図で、図８（ａ）、（ｂ）の状態に対応して示している。図８との相違は、バー面に対して上刃物３は垂直に、下刃物４は斜めに移動し、かつ両者の移動軌跡の延長線が交差するように配置されている。（ａ）の状態で菱形状のハッチング部分は、（ｂ）に至る接合過程で圧縮されるので、オーバーラップを設けた場合と同様に、接合部には圧縮力が作用して接合面への押圧力が大きくなり、結果的に接合強度が大きくなる。 FIG. 10 is a schematic view of a joining apparatus according to another embodiment, corresponding to the states of FIGS. 8 (a) and 8 (b). The difference from FIG. 8 is that the upper cutter 3 is perpendicular to the bar surface, the lower cutter 4 is moved obliquely, and the extension lines of the movement trajectory of both intersect. In the state of (a), the rhombic hatched portion is compressed in the joining process leading to (b), and as in the case where an overlap is provided, a compressive force acts on the joined portion to The pressing force increases, and as a result, the bonding strength increases.

図１０の接合装置の変形例として、上刃物が斜めに移動、下刃物が垂直に移動してもよい。あるいは、両方が斜め移動しその角度が異なるようにしてもよい。つまり、上下刃物の移動軌跡の延長線が交差するように配置されていれば良い。 As a modification of the joining apparatus in FIG. 10, the upper cutter may move obliquely and the lower cutter may move vertically. Alternatively, both may be moved obliquely and the angles thereof may be different. That is, it only needs to be arranged so that the extension lines of the movement trajectories of the upper and lower cutters intersect.

上記した接合の結果、図３に示したように連結部材１３からはみ出たクロップ１１，１２が生成される。クロップの大部分は接合完了時に切断されているが、上述した接合方法における接合面は板厚方向にある角度を持った形状となるので、押し込みストローク量によってはクロップと接合部との連結部が残る。接合完了時にクロップを分断しやすくするためには、連結残部は板厚方向で５mm以下であるようにすることが好ましく、押し込みストロークは少なくとも板厚以上、好ましくは、板厚の１．２倍以上とするのがよい。なお、ストロークが板厚の１．２倍以上であれば、連結残厚みが小さくなると同時に、接合部の塑性流動変形率も大きくなるので接合強度も増加する。 As a result of the joining described above, the crops 11 and 12 protruding from the connecting member 13 are generated as shown in FIG. Most of the crop is cut when the joining is completed, but the joining surface in the joining method described above has a shape with a certain angle in the plate thickness direction, so the connecting part of the crop and the joining part may be depending on the amount of pushing stroke. Remain. In order to make it easy to divide the crop when joining is completed, it is preferable that the remaining portion of the connection is 5 mm or less in the thickness direction, and the pushing stroke is at least equal to or greater than the thickness, preferably 1.2 times the thickness. It is good to do. If the stroke is 1.2 times or more of the plate thickness, the remaining connection thickness is reduced, and at the same time, the plastic flow deformation rate of the joint is increased, so that the joint strength is also increased.

次に、上下刃物を上記の移動軌跡に従って移動させる刃物駆動機構の一例を説明する。図１１は刃物駆動機構の概略構成を示す。上刃物３、下刃物４は接合開始位置から接合完了位置を経由して接合開始位置に戻る。このとき、接合するバー材がライン速度で下流方向に進行しているので、この進行に同調させながら点線で示す上刃物軌跡、下刃物軌跡を移動する。なお、静止している金属板同士を接合する場合は、単に押し込みストロークを上下する刃物駆動機構でよい。 Next, an example of a blade drive mechanism that moves the upper and lower blades according to the movement trajectory will be described. FIG. 11 shows a schematic configuration of the blade driving mechanism. The upper cutter 3 and the lower cutter 4 return from the joining start position to the joining start position via the joining completion position. At this time, since the bar material to be joined advances in the downstream direction at the line speed, the upper cutter locus and the lower cutter locus shown by the dotted lines are moved while synchronizing with this progression. In addition, when joining the metal plates which are stationary, the blade drive mechanism which raises / lowers a pushing stroke may be sufficient.

主クランク軸はその中心Ａ（図１と同じ点Ａ）に対し２つの偏心軸をもつ。その上偏心軸は上刃物と、下偏心軸は下刃物とそれぞれリンクを介して連結され、主クランク軸の回転角に応じて上下刃物を上下（押し込みまたは後退）させる。また、主クランク軸と同調関係に係合される同調軸は、揺動レバーを介して上偏心軸のリンク、下偏心軸のリンクと連系し、上下刃物がバーに接触している間はバーの進行とほぼ等しい速度でバーの進行方向に刃物を移動させ、上下刃物がバーから離れると元の位置に戻す。 The main crankshaft has two eccentric shafts with respect to its center A (the same point A as in FIG. 1). In addition, the upper eccentric shaft is connected to the upper cutter and the lower eccentric shaft is connected to the lower cutter through links, respectively, and the upper and lower cutters are moved up and down (pressed or retracted) in accordance with the rotation angle of the main crankshaft. The tuning shaft engaged with the main crankshaft in a synchronized relationship is linked to the link of the upper eccentric shaft and the link of the lower eccentric shaft via the swing lever, while the upper and lower cutters are in contact with the bar. The blade is moved in the direction of travel of the bar at a speed approximately equal to the progress of the bar, and when the upper and lower blades are separated from the bar, they are returned to their original positions.

図１１（ａ）は接合開始以前の状態を示している。（ｂ）は接合完了時の状態を示し、横からみた上偏心軸と下偏心軸は同一線上となっている。このように、接合時の上下刃物をバーの進行速度に合わせているので、バー材に対する無理な引っ張りや圧縮がなく、スムーズな接合が可能になる。 FIG. 11A shows a state before the start of bonding. (B) shows the state at the time of completion of joining, and the upper eccentric shaft and the lower eccentric shaft viewed from the side are on the same line. As described above, since the upper and lower blades at the time of joining are matched to the traveling speed of the bar, there is no excessive tension or compression on the bar material, and smooth joining becomes possible.

この刃物駆動機構は、例えば「日立評論VOL.61 No.9(1979−9)」に掲載されている「日立ペンジュラム型フライングシャー」とほぼ同様な駆動機構によって構成されている。なお、刃物をバー材の移動に同調させるための同調機構は種々の変形が可能である。例えば、刃物の突起がバーに食い込んでから接合完了で引き離されるまではバーの移動に自然に追随させ、刃物を所定位置まで引き離したとき、バネ等によって元位置に復旧させるような構成も可能で、主クランク軸と必ずしも同調関係を持たなくてもよい。 This blade drive mechanism is constituted by a drive mechanism substantially similar to the “Hitachi pendulum type flying shear” published in “Hitachi review VOL.61 No.9 (1979-9)”, for example. The tuning mechanism for synchronizing the blade with the movement of the bar material can be variously modified. For example, it is possible to have a configuration in which the protrusion of the cutter bites into the bar until it is released after the joining is completed, and naturally follows the movement of the bar, and when the cutter is pulled to a predetermined position, it is restored to the original position by a spring or the like. The main crankshaft does not necessarily have a synchronized relationship.

また、特開平１０−３４２０３号の図５に開示されているドラム式、あるいは同号の図１５，１６に開示されている振り子式の駆動機構を用いて、バー材の移動速度に合わせて動作させ、せん断接合するような接合装置が可能である。 In addition, the drum type disclosed in FIG. 5 of JP-A-10-34203 or the pendulum type drive mechanism disclosed in FIGS. 15 and 16 of the same number is used to operate in accordance with the moving speed of the bar material. It is possible to use a joining apparatus that performs shearing joining.

図１２は接合装置の刃物の他の実施例を示す。図示のように、上刃物３、下刃物４に複数の突起を設けている。上下刃物の一方の突起のみを複数としてもよい。上述のように、突起は刃物のせん断方向と直角な方向に押圧力を発生して接合部を圧縮する作用をもつ。突起を複数設けると、１個の場合に比べて突起にかかる負荷が軽減されるので、突起部の耐摩耗性を向上できる。また、各突起の高さを小さくして、その分だけバーへの食い込みを減らせるので、接合後の連結部の品質が向上する。 FIG. 12 shows another embodiment of the cutter of the joining apparatus. As shown in the drawing, the upper cutter 3 and the lower cutter 4 are provided with a plurality of protrusions. Only one projection of the upper and lower cutters may be plural. As described above, the protrusion has a function of generating a pressing force in a direction perpendicular to the shearing direction of the blade and compressing the joint portion. When a plurality of protrusions are provided, the load applied to the protrusions is reduced as compared with the case of a single protrusion, so that the wear resistance of the protrusions can be improved. Moreover, since the height of each protrusion can be reduced and the amount of biting into the bar can be reduced accordingly, the quality of the connecting portion after joining is improved.

なお、複数の突起の形状や配置は必ずしも同じでなくてよく、例えば、後方の突起は幅方向に間歇的に配置したり、前方と後方で全幅方向をカバーするような配置も可能で、接合部に作用する圧縮力を効果的に支える構成であればよい。 The shape and arrangement of the plurality of protrusions do not necessarily have to be the same. For example, the rear protrusion can be arranged intermittently in the width direction, or can be arranged so as to cover the entire width direction in the front and rear. Any structure that effectively supports the compressive force acting on the portion may be used.

図１３は接合装置の刃物の更に他の実施例を示す。上刃物３、下刃物４は図１と同様に配置されているが、突起を持っていない。この場合、本発明の接合方法における接合面は板厚方向にある角度（θ_J）を持った形状となるので、接合部に発生する圧縮力は（１）式の関係（θ_D＝０）からバーと刃物の接触抵抗等によって発生する水平力Ｆ_Hによっても支えられる。従って、突起のある場合に比べて接合部に発生する圧縮力は低下するが、接合する材料の仕様や要求される破断強度によっては使用可能である。 FIG. 13 shows still another embodiment of the cutter of the joining apparatus. The upper cutter 3 and the lower cutter 4 are arranged in the same manner as in FIG. 1, but do not have protrusions. In this case, since the joining surface in the joining method of the present invention has a shape having an angle (θ _J ) in the plate thickness direction, the compressive force generated in the joining portion is expressed by the relationship (θ _D = 0) of equation (1). The horizontal force F _H generated by the contact resistance between the bar and the blade is also supported. Therefore, the compressive force generated at the joint is lower than when there is a protrusion, but it can be used depending on the specifications of the material to be joined and the required breaking strength.

次に、本発明の金属板接合方式を熱間圧延設備に適用した実施例を説明する。本実施例の熱間圧延設備には、特に先行バーと後行バーをライン上で重ねる重合せ機構と、その重ね合わせ部をライン上で接合する接合機が組み込まれる。 Next, an embodiment in which the metal plate joining method of the present invention is applied to a hot rolling facility will be described. In particular, the hot rolling equipment of this embodiment incorporates a superposition mechanism that superimposes the preceding bar and the succeeding bar on the line, and a joining machine that joins the overlapping part on the line.

図１４は一実施例による熱間設備の概略のライン構成を示す。粗圧延機２１と接合機２６の間に、金属板を巻取って速度を調節する中間コイラー２２、粗バーのオミット部をカットするクロップシャー２３、デスケラー２４、後行バー１と先行バー２の重合せ機構である昇降装置２５を、また接合機２６と仕上ミル２８の間にクロップ処理装置２７を設けている。 FIG. 14 shows a schematic line configuration of a hot facility according to an embodiment. An intermediate coiler 22 that winds a metal plate and adjusts the speed between the roughing mill 21 and the joining machine 26, a crop shear 23 that cuts the omit part of the coarse bar, a descaler 24, a trailing bar 1 and a leading bar 2. A lifting device 25 as a superposition mechanism is provided, and a crop processing device 27 is provided between the joining machine 26 and the finishing mill 28.

接合機２６はレール上を移動できる機構を備えてライン組み込みしてもよい。しかし、本熱間圧延設備には上記した本発明の接合装置を使用し、その接合時間が短いので、例えば図１１に示した刃物駆動機構を用いると、バー材の移動速度に合わせて動作させつつ、せん断接合するような構成が可能である。 The joining machine 26 may be incorporated in a line with a mechanism that can move on the rail. However, since the joining apparatus of the present invention described above is used for this hot rolling facility and the joining time is short, for example, when the blade driving mechanism shown in FIG. 11 is used, it is operated in accordance with the moving speed of the bar material. However, a configuration in which shear bonding is performed is possible.

これにより、粗圧延機２１と仕上げ圧延機２８の間に設置する圧延材の接合機２６は、熱間圧延材の送り速度に合わせて移動しながら接合を完了するように構成され、圧延材を撓ませて送り速度を調整するルーパーが不要になる。 Thereby, the rolling material joining machine 26 installed between the rough rolling mill 21 and the finish rolling mill 28 is configured to complete the joining while moving according to the feed speed of the hot rolled material, A looper that adjusts the feed rate by bending is unnecessary.

クロップシャー２３はバーの先端の不定形な形状部（オミット部）をカットする。バーを連続的に接合する場合においても、極端に異常な形状のオミット部をカットして、接合機２５やクロップ処理装置の処理に問題を生じないようにしている。 The crop shear 23 cuts an irregularly shaped portion (omit portion) at the tip of the bar. Even when the bars are continuously joined, an extremely abnormal omit portion is cut so as not to cause a problem in the processing of the joining machine 25 and the crop processing device.

本実施例のデスケラー２４は、後述のように昇降装置２５と一体的に構成され、バー材の重ね合わせる部分の少なくとも一部をデスケーリングしてから重ね合わせるようにしている。デスケーリングの方法としては、回転カッターや、ブローチなどの機械的な切削または研削、アセチレンガスバーナーの噴射など種々の手段があるが、短時間で効率のよい手段として高圧水の噴射を採用している。 The descaler 24 of the present embodiment is configured integrally with the lifting device 25 as described later, and at least a part of the overlapping portion of the bar material is descaled and then overlapped. There are various descaling methods such as rotating cutters, mechanical cutting or grinding such as broaches, and acetylene gas burner injection, but high-pressure water injection is adopted as an efficient means in a short time. Yes.

図１５は、スケール厚さと接合部破断強度の関係を示す。スケール厚さが薄い程接合部の破断強度が上がるので、スケールを極力少なくしてから重ね合わせることが好ましい。なお、デスケーリングは重ね合わせ面の全面に施す必要はなく、むしろ変形して接合面となる局所領域に限定して行うのが好ましい。 FIG. 15 shows the relationship between the scale thickness and the joint breaking strength. The thinner the scale thickness, the higher the breaking strength of the joint. Therefore, it is preferable to overlap after reducing the scale as much as possible. Note that descaling does not have to be performed on the entire overlapping surface, but is preferably performed only on a local region that is deformed to become a bonding surface.

図２４は、デスケーリング後の開放時間とスケール厚さの関係、また、図２５はデスケーリング後の開放時間、スケール厚さ及び接合部破断強度の関係を示すもので、図１５と図２４を一つにまとめたものである。上述のように接合部破断強度は接合部傾斜角θjに依存するが、θjが６０゜またはそれ以下のときに、開放時間を２０秒以下にすることで、圧延において破断に至らない接合部破断強度以上にすることができる。 FIG. 24 shows the relationship between the release time after descaling and the scale thickness, and FIG. 25 shows the relationship between the release time after descaling, the scale thickness, and the joint fracture strength. It is a one-piece. As described above, the joint fracture strength depends on the joint inclination angle θj, but when θj is 60 ° or less, the release time is set to 20 seconds or less, so that the joint fracture does not result in rolling. It can be higher than strength.

次に先行バーと後行バーの接合予定部を重ね合わせる昇降装置２５を説明する。昇降装置の機構を説明する前に、両バーの重ね合わされた領域とクロップ及び接合位置の関係を説明する。 Next, the elevating device 25 for superimposing the scheduled joining portions of the preceding bar and the succeeding bar will be described. Before explaining the mechanism of the lifting device, the relationship between the overlapping area of both bars, the crop and the joining position will be explained.

図１６は、バーの重ね合わせ部と接合位置の説明図である。（ａ）は後行材であるバー１のオミット部を、（ｂ）は先行材であるバー２のオミット部を示す。ただし、クロップシャー２３による整形またはその必要なしのオミット部である。上バー１の長さｎの部分、下バー２の長さｍの部分は板幅が狭く、もともとオミット部として捨てられる箇所である。 FIG. 16 is an explanatory diagram of the overlapping portion of the bar and the joining position. (A) shows the omit part of the bar 1 that is the following material, and (b) shows the omit part of the bar 2 that is the preceding material. However, it is an omit part that does not need to be shaped by the crop shear 23 or not. The length n of the upper bar 1 and the length m of the lower bar 2 have a narrow plate width and are originally discarded as an omit.

（ｃ）はバー１，２を重ねた状態を、（ｄ）は接合後の接合位置を示し、接合位置からはみ出た斜線部がクロップとなる。ここで、上バー１のｎ内及び下バー２のｍ内で、かつ両バーの板幅がほぼ同一となる部位が接合位置となるように、（ｃ）での重ね合わせを設定している。このように、重ね合わせ部をできるだけ両バーのオミット部とすることで、接合後のクロップの大半がオミット部となるので、バー材の歩留を向上することができる。 (C) shows a state in which the bars 1 and 2 are overlapped, (d) shows a joining position after joining, and a hatched portion protruding from the joining position becomes a crop. Here, the superposition in (c) is set so that the position within the n of the upper bar 1 and the m of the lower bar 2 and where the bar widths of both bars are substantially the same is the joining position. . In this way, by making the overlapping portion as close as possible to the both bars, most of the crop after joining becomes an odd portion, so the yield of the bar material can be improved.

図１７〜図２０を用いて、先行バーと後行バーの接合予定部を重ね合わせる昇降装置２５の構成と動作を説明する。図１７は一実施例による昇降装置の構成を示す。ライン上で、接合機２６の前に近接して配置される昇降装置２５は、上ローラセット１１１、昇降ローラセット１１２、テーブルローラセット１１３、ベース１１４及びリンク機構１１５から構成されている。なお、上ローラセット１１１とテーブルローラセット１１３に噴射型のデスケラー２４を設け、重ね合わせる面だけを、その直前でデスケーリングし、バーの他の部位からの熱を奪わないようにしている。 The configuration and operation of the lifting device 25 that superimposes the joining portions of the preceding bar and the succeeding bar will be described with reference to FIGS. FIG. 17 shows a configuration of a lifting device according to one embodiment. On the line, the elevating device 25 arranged close to the front of the bonding machine 26 includes an upper roller set 111, an elevating roller set 112, a table roller set 113, a base 114, and a link mechanism 115. In addition, an injection type descaler 24 is provided on the upper roller set 111 and the table roller set 113, and only the surface to be overlapped is descaled immediately before that so as not to take heat from other parts of the bar.

図１８は先行バー２の後端がテーブルローラセット１１３から離れ出した状態で、この状態を検知するとテーブルローラセット１１３は増速して後行バー１を早送りする。また、図１９に示すように昇降ローラセット１１２は予め下がった状態としてある。増速したバー１をバー２上に進行させ、図２０のように接合予定部を重ね合わせる。予定長さのバー材の重ね合わせが終了すると、後行バー１は元の速度に戻され、上ローラ１１１と再び上昇された昇降ローラ１１２とでバー１，２を支持する。このように重ねられた後行バー１と先行バー２は等速で進行して、接合機２６へと進行する。 FIG. 18 shows a state in which the rear end of the preceding bar 2 has moved away from the table roller set 113, and when this state is detected, the table roller set 113 increases in speed and rapidly feeds the subsequent bar 1. Moreover, as shown in FIG. 19, the raising / lowering roller set 112 has been lowered in advance. The accelerated bar 1 is advanced on the bar 2, and the joining portions are overlapped as shown in FIG. When the superposition of the bar material of the predetermined length is completed, the succeeding bar 1 is returned to the original speed, and the bars 1 and 2 are supported by the upper roller 111 and the lift roller 112 raised again. The succeeding bar 1 and the preceding bar 2 that are overlapped in this way proceed at a constant speed and proceed to the bonding machine 26.

バー１，２の重ね合わせ部が進入すると、接合機２６は接合処理を開始し、刃物３，４の各々をバー材の板厚以上のストローク量で斜めに押し込み、塑性流動変形を与えて接合する。上刃物３と下刃物４は重ね合わせ部の一部が十分に塑性流動変形できるように、ストローク量Ｌ３、接合部傾斜角θ_J、ラップ量ε１などが定められている。接合されたバーはクロップ処理装置２７でクロップを除去してから仕上圧延機２１に搬送される。 When the overlapping portion of the bars 1 and 2 enters, the joining machine 26 starts the joining process, and each of the blades 3 and 4 is obliquely pushed with a stroke amount equal to or greater than the plate thickness of the bar material, and is subjected to plastic flow deformation and joined. To do. The upper cutter 3 and the lower cutter 4 have a stroke amount L3, a joint inclination angle θ _J , a lap amount ε1, and the like so that a part of the overlapping portion can be sufficiently plastically flow-deformed. The joined bars are conveyed to the finishing mill 21 after the crop is removed by the crop processing device 27.

図２１にクロップ処理装置の構成を示す。（ａ）は上面図、（ｂ）は正面図である。バー１，２の接合の結果として生じるクロップ１１，１２は僅かの連結部により接合部付近の上部と下部に残る。この接合部がテーブルローラ１２５〜１２８により進行され、一方、チョッパ回転子支持部１３０，１３１に支持されている上チョッパ１２３と、同様に支持されている下チョッパ１２４とが回転して、それぞれ上クロップ１１、下クロップ１２に衝突すると、クロップはバーから分離される。この後、下クロップ１２は下ガイド１２２を滑って下用バケット１３３に落下する。上クロップ１１は上ストッパ１２９の傾斜を利用して、上用バケット１３２に落下する。なお、図２１のクロップ処理装置２７は説明の都合上から単機で示したが、接合機２６と近接配置して、接合完了後の直後にクロップを除去する構成とするのが良い。 FIG. 21 shows the configuration of the crop processing device. (A) is a top view, (b) is a front view. The crops 11 and 12 resulting from the joining of the bars 1 and 2 remain in the upper part and the lower part in the vicinity of the joining part due to a slight connection. The joining portion is advanced by the table rollers 125 to 128, while the upper chopper 123 supported by the chopper rotor support portions 130 and 131 and the lower chopper 124 supported in the same manner are rotated, respectively. When it collides with the crop 11 and the lower crop 12, the crop is separated from the bar. Thereafter, the lower crop 12 slides on the lower guide 122 and falls into the lower bucket 133. The upper crop 11 falls on the upper bucket 132 using the inclination of the upper stopper 129. Note that the crop processing device 27 of FIG. 21 is shown as a single machine for convenience of explanation, but it is preferable that the crop processing apparatus 27 be disposed close to the bonding machine 26 and remove the crop immediately after the bonding is completed.

クロップ分断は板厚が異なった金属板の接合、板幅が異なった材料の接合時に特に工夫を要する。異なった板厚を接合する場合には、押し込みストロークを厚い側の板厚に合わせて押し込みストロークを設定すると良い。こうすることで、厚い板のクロップは連結残部がほとんど無くなり、接合時に切断された状態となる。 Crop division requires special measures when joining metal plates with different plate thicknesses and joining materials with different plate widths. When joining different plate thicknesses, it is preferable to set the push-in stroke in accordance with the plate thickness on the thicker side. By doing so, the thick plate crop has almost no connection remaining and is cut at the time of joining.

このため、接合する板厚を検知または設定して、接合機２６の押し込みストローク量を自動または手動で調整できるストローク調整機構を設ける。また、幅の異なる金属板の接合の場合には、重ね合わせから接合までの過程において、幅をシャーにて切り揃えたり、特開平１０−０３４２０３号に開示されているように狭い材料側の刃物にバーガイドを用いる方法等がある。 For this reason, a stroke adjusting mechanism that can detect or set the plate thickness to be joined and automatically or manually adjust the pushing stroke amount of the joining machine 26 is provided. In the case of joining metal plates with different widths, the width is cut with a shear in the process from superposition to joining, or the blade on the narrow material side as disclosed in Japanese Patent Laid-Open No. 10-034203. For example, there is a method using a bar guide.

図２２は接合部の模式図で、（ａ）は接合完了時、（ｂ）は接合後の圧延完了時の接合線を示す。接合線alは、圧延後は圧下量に見合ってblのように延ばされる。このように圧延とともに傾斜が大きくなり、接合面積が増加するので、圧延スタンド間で作用する張力に対する耐破断性が高まる。特に、後段ほど圧延スタンド間の単位面積あたりの張力が高くなるので、圧延とともに接合面積が増加することは強度的に好ましい。 22A and 22B are schematic views of the joining portion, where FIG. 22A shows a joining line at the time of completion of joining, and FIG. 22B shows a joining line at the time of completion of rolling after joining. After the rolling, the joining line al is extended like bl according to the amount of reduction. As described above, since the inclination increases with rolling and the joining area increases, the resistance to breakage against the tension acting between the rolling stands increases. In particular, since the tension per unit area between the rolling stands becomes higher in the latter stage, it is preferable in terms of strength that the joining area increases with rolling.

本実施例の熱間圧延設備によれば、バー材の先端と後端をオンラインで接合することができるからバー材の連続化が可能で、接合のために新たに加熱エネルギーも必要としない。本接合方法は板厚方向に対し刃物を斜めに押し込む接合過程で、刃物の突起部により接合部に十分な押圧力を作用させて、破断強度の大きい固相拡散接合を実現できるので、圧延中に接合部が破断し、圧延ロール表面を傷つけることがない。 According to the hot rolling facility of the present embodiment, since the front and rear ends of the bar material can be joined online, the bar material can be continuous, and no additional heating energy is required for joining. This joining method is a joining process in which the blade is pushed obliquely with respect to the plate thickness direction, and a sufficient pressing force is applied to the joint by the projection of the blade, so that solid phase diffusion joining with high breaking strength can be realized. Therefore, the joint is not broken and the surface of the rolling roll is not damaged.

また、押し込み深さはバー材の板厚の５０％以上とすることで強固な接合ができるが、残材のクロップ分断を接合と同時に行うためには押し込み深さを板厚以上にするとよい。この場合、クロップ分断を省略することができる場合もある。 Further, although the indentation depth is 50% or more of the plate thickness of the bar material, strong joining can be performed. However, in order to perform the crop cutting of the remaining material at the same time as the joining, the indentation depth is preferably set to the plate thickness or more. In this case, crop division may be omitted.

また、接合時間は基本的には押し込み速度の大小に左右される。例えば１００mm／ｓ程度の押し込み速度が実現できるので、熱間圧延ラインの板速度に追従しながらの短時間の接合が可能になり、接合のために長いライン長を必要としない。さらに、ルーパーを省略することができるので、中間コイラーと仕上ミル間の距離を大幅に短縮できる。 Further, the joining time basically depends on the magnitude of the pushing speed. For example, since an indentation speed of about 100 mm / s can be realized, short-time joining is possible while following the plate speed of the hot rolling line, and a long line length is not required for joining. Furthermore, since the looper can be omitted, the distance between the intermediate coiler and the finishing mill can be greatly shortened.

本発明の一実施例による金属板の接合装置の基本構成を示す構成図。The block diagram which shows the basic composition of the joining apparatus of the metal plate by one Example of this invention. 図１の接合装置の接合完了状態を示す構成図。The block diagram which shows the joining completion state of the joining apparatus of FIG. 刃物（剪断刃）形状と接合完了状態での幾何学的関係を示す説明図。Explanatory drawing which shows the geometric relationship in a cutter (shearing blade) shape and joining completion state. 突起部の突起角θDと水平力の関係を示す特性図。The characteristic view which shows the relationship between protrusion angle (theta) D of a protrusion part, and horizontal force. 突起角の上限を示す説明図。Explanatory drawing which shows the upper limit of a protrusion angle. 接合部傾斜角θJと接合破断強度の関係を示す特性図。The characteristic view which shows the relationship between joining part inclination-angle (theta) J and joining breaking strength. 刃物刃先開き角θXと接合部傾斜角θJの関係を示す特性図。The characteristic view which shows the relationship between the blade edge opening angle θX and the joint inclination angle θJ. オーバーラップのある接合装置の模式図。The schematic diagram of the joining apparatus with an overlap. 刃物の押し込みストロークの説明図。Explanatory drawing of the pushing stroke of a blade. 他の実施例による接合装置の模式図。The schematic diagram of the joining apparatus by other Examples. 刃物駆動機構の概略構成図。The schematic block diagram of a blade drive mechanism. 他の例による刃物を備えた接合装置の模式図。The schematic diagram of the joining apparatus provided with the cutter by another example. さらに他の例による刃物を備えた接合装置の模式図。Furthermore, the schematic diagram of the joining apparatus provided with the cutter by another example. 一実施例による熱間圧延設備のライン構成図。The line block diagram of the hot rolling equipment by one Example. スケール厚さと接合部破断強度の関係を示す特性図。The characteristic view which shows the relationship between scale thickness and joint fracture strength. バーの重ね合わせ部と接合位置を示す説明図。Explanatory drawing which shows the overlapping part and joining position of a bar. 先行バーと後行バーを重ね合わせる昇降装置の構成図。The block diagram of the raising / lowering apparatus which superimposes a preceding bar and a succeeding bar. 昇降装置の重ね合わせ動作の開始状態を示す説明図。Explanatory drawing which shows the start state of the superimposition operation | movement of a raising / lowering apparatus. 昇降装置の重ね合わせ動作の中間状態を示す説明図。Explanatory drawing which shows the intermediate state of the overlapping operation | movement of a raising / lowering apparatus. 昇降装置の重ね合わせ動作の終了状態を示す説明図。Explanatory drawing which shows the completion | finish state of the superimposition operation | movement of a raising / lowering apparatus. クロップ処理装置の構成図。The block diagram of a crop processing apparatus. 接合部の接合後、圧延後を示す模式図。The schematic diagram which shows after rolling after joining of a junction part. 本発明の金属板接合方法の作用を示す説明図。Explanatory drawing which shows the effect | action of the metal plate joining method of this invention. デスケーリング後の開放時間とスケール厚さの関係を示す特性図。The characteristic view which shows the relationship between the open time after descaling, and scale thickness. デスケーリング後の開放時間、スケール厚さ及び接合部破断強度の関係を示す特性図。The characteristic view which shows the relationship between the open time after descaling, a scale thickness, and joint fracture strength.

符号の説明Explanation of symbols

１…上バー、２…下バー、３…上刃物、４…下刃物、５…上クランプ、６…下クランプ、７…上クランプ支持装置、８…下クランプ支持装置、９…上刃物集合体、１０…下刃物集合体、１１…上クロップ、１２…下クロップ、１３…バー連続体、２１…粗圧延機、２２…中間コイラー、２３…クロップシャー、２４…デスケーラー、２５…昇降装置、２６…接合機、２７…クロップ処理装置、２８…仕上げミル、３０，４０…突起部、３１，４１…側端面、３２，４２…先端面、３３，４３…刃先、３４，４４…突起面、５０…接合部、１００…刃先移動軌跡、１０１…ハウジング、１１１…上ローラセット、１１２…昇降ローラセット、１１３…テーブルローラセット、１１５…リンク機構。 DESCRIPTION OF SYMBOLS 1 ... Upper bar, 2 ... Lower bar, 3 ... Upper cutter, 4 ... Lower cutter, 5 ... Upper clamp, 6 ... Lower clamp, 7 ... Upper clamp support device, 8 ... Lower clamp support device, 9 ... Upper cutter assembly DESCRIPTION OF SYMBOLS 10 ... Lower cutter aggregate | assembly, 11 ... Upper crop, 12 ... Lower crop, 13 ... Bar continuum, 21 ... Rough rolling mill, 22 ... Intermediate coiler, 23 ... Crop shear, 24 ... Descaler, 25 ... Lifting device, 26 ... Joiner, 27 ... Crop processing device, 28 ... Finishing mill, 30, 40 ... Projection, 31, 41 ... Side end surface, 32, 42 ... End surface, 33, 43 ... Cutting edge, 34, 44 ... Projection surface, 50 DESCRIPTION OF SYMBOLS ... Joining part, 100 ... Cutting edge movement locus, 101 ... Housing, 111 ... Upper roller set, 112 ... Elevating roller set, 113 ... Table roller set, 115 ... Link mechanism.

Claims

重ね合わされた金属板の両側に所定形状のせん断刃を当てがい、重ね合わせ部を挟み込むように前記せん断刃を移動して前記金属板の剪断を行いながら、その剪断過程で生じる互いの剪断面の変形を利用して接合部を形成するようにした金属板の接合方法において、
前記接合部または接合面が前記金属板の厚み方向に対して、斜めに形成され、
一方のせん断刃の移動軌跡の延長線が他方のせん断刃の内側とオーバーラップするように、または前記延長線が互いに交差するように設定し、
接合後に設定された部材からはみ出てクロップとなる部分を、前記それぞれのせん断刃との間で支持するように配置される複数のクランプにより支持し、
前記せん断刃の移動に伴い、前記せん断刃に設けられた突起部が前記剪断面同士を互いに押し付けあう押圧力を発生するように前記金属板に食い込ませることを特徴とする金属板の接合方法。 A shear blade of a predetermined shape is applied to both sides of the overlapped metal plates, and the shear blades are moved so as to sandwich the overlapped portion to shear the metal plates. In the method of joining the metal plates that are designed to form the joint using deformation,
The joining portion or joining surface is formed obliquely with respect to the thickness direction of the metal plate,
Set so that the extension line of the moving trajectory of one shear blade overlaps the inside of the other shear blade, or the extension lines intersect each other,
Supporting the portion that is cropped out of the member set after joining, by a plurality of clamps arranged to support between the respective shear blades,
A method of joining metal plates, characterized in that, as the shear blade moves, a protrusion provided on the shear blade bites into the metal plates so as to generate a pressing force that presses the shear surfaces against each other.

請求項１において、前記接合部または接合面の傾斜角が７５°以下となる金属板の接合方法。 The metal plate joining method according to claim 1, wherein an inclination angle of the joint portion or the joint surface is 75 ° or less.

重ね合わされた金属板の両側の対向位置に所定形状のせん断刃を当てがい、重ね合わせ部を挟み込むように前記せん断刃を移動して前記金属板の剪断を行いながら、その剪断過程で生じる互いの剪断面の変形を利用して接合部を形成するようにした金属板の接合方法において、
前記剪断面同士を互いに押し付け合う押圧力が発生するように前記せん断刃の刃先の移動軌跡を設定し、
前記移動軌跡の延長線が互いに対抗するせん断刃の内側とオーバーラップするように、または前記延長線が互いに交差するように設定し、
接合後に接合された部材からはみ出てクロップとなる部分を、前記それぞれのせん断刃との間で支持するように配置される複数のクランプにより支持し、
前記せん断刃の移動に伴い、前記せん断刃に設けられた突起部が前記剪断面同士を互いに押し付けあう押圧力を発生するように前記金属板に食い込ませることを特徴とする金属板の接合方法。 A shearing blade having a predetermined shape is applied to opposite positions on both sides of the overlapped metal plates, and the shearing blade is moved so as to sandwich the overlapped portion to shear the metal plate. In the joining method of the metal plate which formed the joined part using the deformation of the shear surface,
Set the movement trajectory of the cutting edge of the shearing blade so that a pressing force pressing the shearing surfaces against each other is generated,
The extension line of the movement trajectory is set to overlap with the inside of the shearing blades facing each other, or the extension line is set to intersect each other,
Supporting the portion that is cropped out of the joined members after joining by a plurality of clamps arranged to support between the respective shear blades,
A method of joining metal plates, characterized in that, as the shear blade moves, a protrusion provided on the shear blade bites into the metal plates so as to generate a pressing force that presses the shear surfaces against each other.

請求項３において、前記移動軌跡の少なくとも一方は、前記金属板の厚み方向に対して斜めになるように設定することを特徴とする金属板の接合方法。 The metal plate joining method according to claim 3, wherein at least one of the movement trajectories is set to be inclined with respect to a thickness direction of the metal plate.

請求項４において、前記移動軌跡の延長線がオーバーラップするとき、前記金属板が鉄系材料の場合はオーバーラップ量を０．１ｍｍ〜１５ｍｍとする金属板の接合方法。 5. The method for joining metal plates according to claim 4, wherein when the extension line of the movement locus overlaps, the overlap amount is 0.1 mm to 15 mm when the metal plate is an iron-based material.

請求項３〜５のいずれか１項において、前記せん断刃の移動量（ストローク）は、前記金属板の板厚の５０％〜１５０％とすることを特徴とする金属板の接合方法。 The metal plate joining method according to any one of claims 3 to 5, wherein a moving amount (stroke) of the shearing blade is 50% to 150% of a plate thickness of the metal plate.

剪断過程で生じる互いの剪断面の変形を利用して接合部を形成するようにした金属板の接合装置において、
金属板の重ね合わせ部を挟んでその両側の対向位置に配置されたせん断刃と、
前記重ね合わせ部を支持するように前記それぞれのせん断刃の外側に、すなわち接合後に接合された部材からはみ出てクロップとなる部分を前記それぞれのせん断刃との間で支持するように前記それぞれのせん断刃の外側に配置されたクランプと、
前記せん断断刃の移動に伴い、前記剪断面同士を互いに押し付けあう押圧力を発生して剪断過程で前記金属板に食い込むように、前記せん断刃の少なくとも一方の前記金属板と接触する部位に設けられた突起部と、
前記重ね合わせ部が間に挟み込まれるように、かつ前記接合部が斜めに形成されるように、前記せん断刃が互いに対向するせん断刃の内側とオーバーラップする移動方向に、または移動方向の延長線が互いに交差するように相対移動させる移動機構を設けたことを特徴とする金属板の接合装置。 In the metal plate joining apparatus that forms the joint using the deformation of each other's shearing surface generated in the shearing process,
A shearing blade arranged at opposite positions on both sides of the overlapping portion of the metal plate,
The respective shear blades are supported outside the respective shear blades so as to support the overlapped portion, that is, the portions which are cropped out of the joined members after joining are supported between the respective shear blades. A clamp arranged outside the blade;
Along with the movement of the shear cutting blade, it is provided at a site that contacts at least one of the metal plates so as to generate a pressing force that presses the shear surfaces against each other and bites into the metal plate in the shearing process. Projected protrusions,
The shearing blade overlaps with the inner sides of the shearing blades facing each other so that the overlapping portion is sandwiched therebetween and the joint portion is formed obliquely, or an extension line of the moving direction An apparatus for joining metal plates, characterized in that a moving mechanism is provided for relative movement so as to cross each other.

請求項７において、前記突起部は、前記金属板の厚み方向の頂きと板幅方向の幅をもつ三角柱状に形成されていることを特徴とする金属板の接合装置。 8. The metal plate joining apparatus according to claim 7, wherein the protruding portion is formed in a triangular prism shape having a claw in the thickness direction of the metal plate and a width in the plate width direction.

請求項８において、前記突起部の前記剪断面に対向する面は、前記金属板の水平面に対してなす突起角（θ）が３０°以上、かつ前記せん断刃の移動方向に平行な線と前記水平面とのなす角度以下に形成されていることを特徴とする金属板の接合装置。 9. The surface of the protruding portion facing the shearing surface according to claim 8, wherein a protrusion angle (θ) formed with respect to a horizontal plane of the metal plate is 30 ° or more and the line parallel to the moving direction of the shearing blade An apparatus for joining metal plates, wherein the joining device is formed at an angle formed with a horizontal plane or less.

熱間圧延材を圧延する粗圧延機と仕上げ圧延機の間に、進行中の先行バーと後行バーを接続する接合装置を備えた熱間圧延設備において、
前記接合装置は、前記先行バーと後行バーの接合予定部を重ね合わせる重ね合せ機構と、重ね合わせた両バーの上下から押し込んで剪断しながら接合する上下のせん断刃を持つ接合機構と、前記せん断刃に押込力を加える剪断刃駆動機構を設け、
前記せん断刃は、金属板の重ね合わせ部を挟んでその両側の対向位置に配置されると共に、前記せん断断刃の移動に伴い、剪断面同士を互いに押し付けあう押圧力を発生して剪断過程で前記金属板に食い込むように、前記せん断刃の少なくとも一方の前記金属板と接触する部位に突起部を設け、
前記接合機構は、前記重ね合わせ部を支持するように前記それぞれのせん断刃の外側に、すなわち接合後に接合された部材からはみ出てクロップとなる部分を前記それぞれのせん断刃との間で支持するように前記それぞれのせん断刃の外側に配置されたクランプを設け、
前記剪断刃駆動機構は、前記重ね合わせ部が間に挟み込まれ、かつ前記接合部が斜めに形成されるように、前記せん断刃が互いに対向するせん断刃の内側とオーバーラップする移動方向に、または移動方向の延長線が互いに交差するように相対移動させる移動機構を設けたことを特徴とする熱間圧延設備。 In a hot rolling facility equipped with a joining device for connecting the preceding and succeeding bars in progress between the rough rolling mill and the finish rolling mill for rolling the hot rolled material,
The joining device includes a superposition mechanism that superimposes the planned joining portions of the preceding bar and the succeeding bar, a joining mechanism that has upper and lower shearing blades that join while pushing and shearing from the top and bottom of both the superposed bars, A shearing blade drive mechanism that applies pushing force to the shearing blade is provided.
The shear blades are disposed at opposite positions on both sides of the overlapping portion of the metal plates, and generate a pressing force that presses the shear surfaces against each other in accordance with the movement of the shear cutting blade. Providing a protrusion at a portion that contacts at least one of the metal plates of the shear blade so as to bite into the metal plate,
The joining mechanism is configured to support a portion that is outside the respective shearing blades so as to support the overlapped portion, that is, a portion that becomes a crop after being joined after joining, between the respective shearing blades. Provided with clamps arranged outside the respective shear blades,
The shearing blade driving mechanism is arranged in a moving direction in which the shearing blades overlap with the inner sides of the shearing blades facing each other, so that the overlapping portion is sandwiched therebetween and the joint portion is formed obliquely, or A hot rolling facility provided with a moving mechanism that moves relative to each other so that extension lines in the moving direction cross each other.

請求項１０において、前記剪断刃駆動機構は、上下の前記せん断刃を所定の待機位置に待機させ、両バーの重ね合わせ部が前記接合機構に到達したときに前記せん断刃の押し込みを開始し、前記せん断刃が接合完了までの押し込みストローク移動した時に前記せん断刃を後退させて前記待機位置に戻すサイクリックな動作と、前記せん断刃が前記バーと接触している間はバー移動に追従して前記せん断刃を移動させる同調動作とを行うように構成されていることを特徴とする熱間圧延設備。 In claim 10, the shear blade drive mechanism causes the upper and lower shear blades to wait in a predetermined standby position, and starts pushing the shear blade when the overlapping portion of both bars reaches the joining mechanism, A cyclic operation that retracts the shearing blade to return to the standby position when the pushing blade moves until the joining is completed, and follows the movement of the bar while the shearing blade is in contact with the bar. A hot rolling facility configured to perform a synchronous operation for moving the shear blade.