JP2008212950A - Apparatus for manufacturing spiral steel pipe - Google Patents

Apparatus for manufacturing spiral steel pipe Download PDF

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JP2008212950A
JP2008212950A JP2007049889A JP2007049889A JP2008212950A JP 2008212950 A JP2008212950 A JP 2008212950A JP 2007049889 A JP2007049889 A JP 2007049889A JP 2007049889 A JP2007049889 A JP 2007049889A JP 2008212950 A JP2008212950 A JP 2008212950A
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steel material
strip
shaped steel
rolling
steel pipe
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Masanori Mochizuki
正典 望月
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ISEL Co Ltd
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ISEL Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/126—Supply, or operations combined with supply, of strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/122—Making tubes or metal hoses with helically arranged seams with welded or soldered seams

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a spiral steel pipe, which apparatus can suppress a zigzag motion of a steel band supplied into a forming machine, and also can excellently and quickly carry out the edge preparation for both edges of the steel band without relying upon the cutting method. <P>SOLUTION: In the apparatus for manufacturing the spiral steel pipe, a rolling type edge preparation machine 3 for supplying the steel band 5 into the forming machine 4 while carrying out the edge preparation by rolling both edge portions of the steel band 5 is arranged on the inlet side of the forming machine 4 for forming the steel band 5 into the spiral pipe 50. The rolling type edge preparation machine 3 has a pair of edge pinch rollers 30a, 30b for gripping the steel band 5. Rolling portions 31 are formed on both end portions of the edge pinch rollers 30a, 30b so as to enlarge outward in a tapered shape. Both end portions of the steel band 5 in the direction of the width are held by the rolling portions 31 in the positioned state, and the edge preparation are carried out on the both end portions. Therefore, the steel band 5 is supplied into the forming machine 4 while carrying out the edge preparation on the edge portions in the state that the zigzag motion in the direction of the width is suppressed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、連続した帯状鋼材を螺旋状に成形造管してスパイラル鋼管を製造するスパイラル鋼管の製造装置に関する。   The present invention relates to a spiral steel pipe manufacturing apparatus for manufacturing a spiral steel pipe by forming and forming a continuous strip-shaped steel material in a spiral shape.

この種スパイラル鋼管の製造装置では、図５を参照して、アンコイラー５０６でコイルＣから巻きほどかれた帯状鋼材５０２は、レベラー５０７で平坦化され、開先加工機５０５で幅方向端部の両エッジ部が開先加工された後、一対のピンチローラー５０３で成形機５０１に送り込まれる。そして、成形機５０１では、帯状鋼材５０２を螺旋状に成形造管しながらエッジ部の継ぎ目を溶接してスパイラル鋼管５２０に仕上げられる。このような製造装置において、帯状鋼材５０２が幅方向に蛇行すると、溶接時の開先間隔や開先加工機５０５での開先加工精度等にバラツキが生じて品質の良いスパイラル鋼管５２０の製造が困難となる。   In this type of spiral steel pipe manufacturing apparatus, referring to FIG. 5, a strip steel material 502 unwound from a coil C by an uncoiler 506 is flattened by a leveler 507, and both ends of the width direction end by a groove processing machine 505. After the edge portion is grooved, the pair of pinch rollers 503 are fed into the molding machine 501. Then, in the forming machine 501, the strip-shaped steel material 502 is spirally formed and piped, and the seam of the edge portion is welded to finish the spiral steel pipe 520. In such a manufacturing apparatus, when the strip-shaped steel material 502 meanders in the width direction, the groove interval at the time of welding, the groove processing accuracy in the groove processing machine 505 and the like are varied, and the manufacture of a high-quality spiral steel pipe 520 is possible. It becomes difficult.

そのため、従来は、成形機５０１の入り側の適宜箇所において帯状鋼材５０２の幅方向端部を押し付ける押し付けサイドガイドローラー５０４を設置して、帯状鋼材５０２の幅方向の蛇行を抑制させていた。なお、開先加工機５０５は、切削により帯状鋼材５０２の両エッジ部を所定の開先角度に削り取るカッターで構成される。
特開平５−１３８２４１号公報 特開平６−４７４３３号公報 Therefore, conventionally, a pressing side guide roller 504 that presses the end in the width direction of the strip-shaped steel material 502 at an appropriate location on the entry side of the molding machine 501 is installed to suppress meandering in the width direction of the strip-shaped steel material 502. The groove processing machine 505 is constituted by a cutter that cuts both edge portions of the strip-shaped steel material 502 to a predetermined groove angle by cutting.
Japanese Patent Laid-Open No. 5-138241 Japanese Patent Laid-Open No. 6-47433

しかしながら、帯状鋼材５０２が蛇行することにより上記押し付けサイドガイドローラー５０４に強く押し付けられると、帯状鋼材５０２の端部が押し付けられて変形することがあった。このように帯状鋼材５０２の端部が変形すると、開先加工機５０５での切削による両エッジ部の開先形状にバラツキが生じたり、帯状鋼材５０５の幅寸法に変動が生じて、その後の溶接で不具合が発生する。   However, when the strip steel material 502 meanders and is strongly pressed against the pressing side guide roller 504, the end of the strip steel material 502 may be pressed and deformed. When the end portion of the strip-shaped steel material 502 is deformed in this manner, the groove shape of both edge portions due to cutting by the groove processing machine 505 is varied, or the width dimension of the strip-shaped steel material 505 is changed, and the subsequent welding is performed. Trouble occurs.

また、上記開先加工機５０５は、カッターにより切削加工を行うため、開先加工速度が遅く成形機５０１への帯状鋼材５０２の送り込み速度を速くすることが困難であった。さらには開先加工機５０５から飛散する切削粉が帯状鋼材５０２に付着して溶接不良を生じさせたり、また、ピンチローラー５０３、押し付けサイドガイドローラー５０４等にも切削粉が付着して帯状鋼板５０２の送り込みにズレを生じさせる等の問題があった。   Further, since the groove processing machine 505 performs cutting with a cutter, the groove processing speed is slow, and it is difficult to increase the feeding speed of the strip steel material 502 to the forming machine 501. Further, the cutting powder scattered from the groove processing machine 505 adheres to the belt-shaped steel material 502 to cause poor welding, or the cutting powder adheres to the pinch roller 503, the pressing side guide roller 504, etc. There was a problem such as causing a shift in feeding.

本発明は、上記事情に鑑み、成形機への送り込み時の帯状鋼材の蛇行を抑止すると同時に、切削によらず帯状鋼材の両エッジの開先加工を良好に且つ速く行えるスパイラル鋼管製造装置を提供することを課題とする。   In view of the above circumstances, the present invention provides a spiral steel pipe manufacturing apparatus capable of suppressing the meandering of a strip steel material during feeding to a molding machine, and at the same time, performing the groove processing of both edges of the strip steel material satisfactorily and quickly without cutting. The task is to do.

（１）本発明に係るスパイラル鋼管の製造装置は、
連続した帯状鋼材からスパイラル鋼管を製造する装置であって、
帯状鋼材を螺旋状に成形造管しながら継ぎ目を溶接する成形機の入り側において、帯状鋼材の両エッジ部を圧延により開先加工しながら該帯状鋼材を上記成形機に送り込む圧延式開先加工手段を設置したことを特徴とする。
上記圧延式開先加工手段によれば、帯状鋼材の両エッジ部の開先加工を圧延により行うので、帯状鋼材は、幅方向に強固に位置決めされる。これにより、帯状鋼材の幅方向の蛇行が抑止される。すなわち、従来装置のような、帯状鋼材の蛇行を抑制させるための押し付けサイドガイドローラーを特別に配置しなくても、帯状鋼材の蛇行を抑止できる。従って、帯状鋼材は、上記圧延式開先加工手段によって幅方向の蛇行が抑止された状態でエッジ部に開先加工されながら成形機に送り込まれる。
また、圧延により帯状鋼材の開先加工を行うので、切削粉が発生せず、切削粉の飛散に起因するトラブルが無くなり、しかも、開先加工速度を切削の場合よりも速くすることができる。 (1) A spiral steel pipe manufacturing apparatus according to the present invention comprises:
An apparatus for producing a spiral steel pipe from a continuous strip-shaped steel material,
Rolling-type groove processing that feeds the band-shaped steel material to the forming machine while forming a groove on both edges of the band-shaped steel material by rolling at the entrance side of the forming machine that welds the seam while forming and forming the band-shaped steel material spirally. It is characterized by installing means.
According to the rolling groove processing means, since the groove processing of both edge portions of the strip steel material is performed by rolling, the strip steel material is firmly positioned in the width direction. Thereby, the meandering of the strip | belt-shaped steel materials in the width direction is suppressed. That is, the meandering of the strip-shaped steel material can be suppressed without specially arranging the pressing side guide roller for suppressing the meandering of the strip-shaped steel material as in the conventional device. Accordingly, the strip-shaped steel material is fed into the forming machine while being grooved at the edge portion in a state where meandering in the width direction is suppressed by the rolling-type groove processing means.
Further, since the groove processing of the strip steel material is performed by rolling, cutting powder is not generated, trouble caused by scattering of the cutting powder is eliminated, and the groove processing speed can be made faster than that in the case of cutting.

（２）上記圧延式開先加工手段は、帯状鋼材を挟持する一対の開先ピンチローラーを備え、少なくとも一方の開先ピンチローラーの両端部には、外側へ向けてテーパ状に大径となって帯状鋼材の両エッジ部を圧延する圧延部が形成されているものでもよい。
これにより、上記開先ピンチローラー両端部の圧延部によって帯状鋼材の幅方向両端部が位置決め状態に保持され、且つ圧延により帯状鋼材のエッジ部に良好な開先が施される。 (2) The rolling-type groove processing means includes a pair of groove pinch rollers that sandwich the belt-shaped steel material, and at both ends of at least one groove pinch roller, the diameter increases in a tapered manner toward the outside. The rolling part which rolls both the edge parts of a strip-shaped steel material may be formed.
Thereby, the width direction both ends of a strip steel material are hold | maintained in the positioning state by the rolling part of the said groove pinch roller both ends, and a favorable groove | channel is given to the edge part of a strip steel material by rolling.

（３）上記成形機の入り側に設置される設備が同一のフレーム上に配設され、該フレームは、上記成形機へ送り込む帯状鋼材の進入角度を変更できるように揺動自在に設置されていてもよい。
スパイラル鋼管の管径は、成形機への帯状鋼材の進入角度および帯状鋼材幅によって決定される。従って、上記フレームを揺動させることで、成形機へ送り込む帯状鋼材の進入角度を容易に調整でき、簡単にスパイラル鋼管の管径を設定できる。 (3) The equipment installed on the entrance side of the molding machine is disposed on the same frame, and the frame is installed so as to be swingable so that the entrance angle of the strip steel material fed into the molding machine can be changed. May be.
The pipe diameter of the spiral steel pipe is determined by the approach angle of the strip steel material to the molding machine and the strip steel material width. Therefore, by swinging the frame, it is possible to easily adjust the approach angle of the strip steel material fed into the molding machine, and to easily set the pipe diameter of the spiral steel pipe.

（４）上記成形機の入り側には、コイルから帯状鋼材を巻きほどくアンコイラーと、該アンコイラーから供給される帯状鋼材を平坦化するレベラーと、該レベラーから帯状鋼材が供給される上記圧延式開先加工手段とが設置され、上記アンコイラーは、帯状鋼材が略Ｕ字形状の軌跡を描いて上記レベラーに供給されるように配置されていてもよい。
これにより、アンコイラーとレベラーとを直線的に並設する場合に比べて、成形機の入り側に設置される設備の長さを短く設定でき、本スパイラル鋼管製造装置の設置スペースを小さくすることができる。 (4) On the entry side of the molding machine, an uncoiler that unwinds the strip-shaped steel material from the coil, a leveler that flattens the strip-shaped steel material supplied from the uncoiler, and the rolling type opening that is supplied with the strip-shaped steel material from the leveler. A pre-processing means may be installed, and the uncoiler may be arranged such that the strip-shaped steel material is supplied to the leveler in a substantially U-shaped locus.
As a result, the length of equipment installed on the entrance side of the molding machine can be set shorter compared to the case where the uncoiler and leveler are arranged side by side, and the installation space of the spiral steel pipe manufacturing apparatus can be reduced. it can.

本発明によれば、帯状鋼材は、圧延式開先加工手段によって幅方向の蛇行が抑止された状態でエッジ部に開先加工されながら成形機に送り込まれるので、スパイラル鋼管の溶接品質および生産性の向上を図ることができる。また、従来装置のような特別の押し付けサイドガイドローラーを配置しなくても帯状鋼材の蛇行を抑止でき、その分シンプルに装置を構成することができる。   According to the present invention, the strip-shaped steel material is fed to the forming machine while being grooved at the edge portion in a state in which the meandering in the width direction is suppressed by the rolling-type groove processing means, so that the welding quality and productivity of the spiral steel pipe Can be improved. Further, meandering of the strip-shaped steel material can be suppressed without arranging a special pressing side guide roller as in the conventional apparatus, and the apparatus can be simply configured correspondingly.

以下に、本発明の実施形態を添付図面を参照しながら説明する。
図１、図２に示すように、本実施の形態によるスパイラル鋼管の製造装置は、アンコイラー１、レベラー２、圧延式開先加工機（圧延式開先加工手段）３、成形機４がこの順に配設されている。このスパイラル鋼管の製造装置では、アンコイラー１でコイル１０から巻きほどかれた帯状鋼材５は、上下に設置された複数のローラーを有するレベラー２に通されて平坦化される。そして、平坦化された帯状鋼材５は、圧延式開先加工機３で挟持された状態で幅方向端部の両エッジ部が圧延により開先加工されながら成形機４に送り込まれる。成形機４は、外面成形ローラー４１と内面成形ローラー４２とが配設され、また、内面溶接トーチ４３と外面溶接トーチ４４とが備えられている。この成形機４では、所定の進入角度で送り込まれた帯状鋼材５を、外面および内面の各成形ローラー４１，４２によって螺旋状に成形造管しながら帯状鋼材５のエッジ部の継ぎ目を内面溶接と外面溶接とを順次に行って、スパイラル鋼管５０に仕上げられる。なお、このスパイラル鋼管の製造装置には、送りローラー７ａ，７ｂ，７ｃが配置されている。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the spiral steel pipe manufacturing apparatus according to the present embodiment includes an uncoiler 1, a leveler 2, a rolling groove processing machine (rolling groove processing means) 3, and a forming machine 4 in this order. It is arranged. In this spiral steel pipe manufacturing apparatus, the strip-shaped steel material 5 unwound from the coil 10 by the uncoiler 1 is passed through a leveler 2 having a plurality of rollers installed up and down and flattened. Then, the flattened strip-shaped steel material 5 is fed into the forming machine 4 while the edge portions in the width direction are grooved by rolling while being sandwiched by the rolling type groove processing machine 3. The molding machine 4 includes an outer surface forming roller 41 and an inner surface forming roller 42, and further includes an inner surface welding torch 43 and an outer surface welding torch 44. In this molding machine 4, the band-shaped steel material 5 fed at a predetermined approach angle is formed into a spiral shape by the forming rollers 41 and 42 on the outer surface and the inner surface, and the seam of the edge portion of the band-shaped steel material 5 is welded to the inner surface. Outer surface welding is sequentially performed to finish the spiral steel pipe 50. In addition, feed rollers 7a, 7b, and 7c are arranged in this spiral steel pipe manufacturing apparatus.

また、上記のアンコイラー１、レベラー２、圧延式開先加工機３、送りローラー７ａ，７ｂ，７ｃ等の成形機４の入り側に設置される設備は、同一のフレーム６上に設置されている。そして、このフレーム６は、成形機４の位置で回動可能に支持され、アンコイラー１を配置する外側コーナー部にアクチュエータ６０が取り付けられており、このアクチュエータ６０の進退駆動によって揺動される（図２参照）。スパイラル鋼管５０の管径は、下記関係式で示されるように、成形機４への帯状鋼材５の進入角度θおよび帯状鋼材５の幅によって決定される。   The equipment installed on the entrance side of the molding machine 4 such as the above-described uncoiler 1, leveler 2, rolling groove processing machine 3, feed rollers 7a, 7b, and 7c is installed on the same frame 6. . The frame 6 is rotatably supported at the position of the molding machine 4, and an actuator 60 is attached to an outer corner portion where the uncoiler 1 is disposed. 2). The pipe diameter of the spiral steel pipe 50 is determined by the approach angle θ of the strip-shaped steel material 5 to the molding machine 4 and the width of the strip-shaped steel material 5 as shown by the following relational expression.

Figure 2008212950
Figure 2008212950

従って、上記アクチュエータ６０によってフレーム６を揺動させることで、成形機４へ送り込む帯状鋼材５の進入角度を容易に調整することができ、簡単にスパイラル鋼管５０の管径を設定できる。   Therefore, by swinging the frame 6 by the actuator 60, the entry angle of the strip-shaped steel material 5 fed into the molding machine 4 can be easily adjusted, and the diameter of the spiral steel pipe 50 can be easily set.

上記アンコイラー１は、スタンド１１、コイル１０の支持アーム１２、コイル１０の押さえアーム１３、コイル１０から巻きほどかれた帯状鋼材５を受け留める受けアーム１４を備えている。支持アーム１２および押さえアーム１３には、一端をスタンド１１に取り付けたアクチュエータ１５，１６が連結されており、コイル１０の外径に応じて揺動自在に構成されている。押さえアーム１３の先端には、コイル１０上部を押さえる押さえローラー１３ａが取り付けられている。また、アンコイラー１は、帯状鋼材５が略Ｕ字形状の軌跡を描いて上記レベラー２に供給されるようにレベラー２側に寄った上方に配置されている。これにより、アンコイラー１とレベラー２とを直線的に並設する場合に比べて、成形機４の入り側に設置される設備の長さを短く配置でき、本スパイラル鋼管製造装置の設置スペースを小さくすることができる。   The uncoiler 1 includes a stand 11, a support arm 12 for the coil 10, a pressing arm 13 for the coil 10, and a receiving arm 14 for receiving the strip-shaped steel material 5 unwound from the coil 10. Actuators 15 and 16 having one ends attached to the stand 11 are connected to the support arm 12 and the pressing arm 13, and are configured to be swingable according to the outer diameter of the coil 10. A pressing roller 13 a that holds the upper part of the coil 10 is attached to the tip of the pressing arm 13. The uncoiler 1 is disposed above the leveler 2 so that the strip-shaped steel material 5 is supplied to the leveler 2 while drawing a substantially U-shaped trajectory. Thereby, compared with the case where the uncoiler 1 and the leveler 2 are arranged in parallel, the length of the equipment installed on the entrance side of the molding machine 4 can be shortened, and the installation space of the spiral steel pipe manufacturing apparatus can be reduced. can do.

上記圧延式開先加工機３は、図３（ａ）に示すように、帯状鋼材５を挟持する一対の開先ピンチローラー３０ａ，３０ｂを備え、各開先ピンチローラー３０ａ，３０ｂの両端部には、外側へ向けてテーパ状に大径となった圧延部３１が形成されている。この圧延部３１での圧延により帯状鋼材５の両エッジ部に開先５１が形成される。同時に、各圧延部３１で帯状鋼材５の両エッジ部を圧延することで帯状鋼材５の幅方向両端部が位置決め状態に保持され、帯状鋼材５の幅方向の蛇行が抑止される。これにより、上記圧延式開先加工機３の前側あるいは後側には、従来装置のような特別の押し付けサイドガイドローラー５０４（図５参照）を配置しなくても、帯状鋼材５の蛇行を抑止できる。なお、成形機４においては、図３（ｂ）に示すように、開先５１が形成されたエッジ部の継ぎ目に内面溶接Ｙ１および外面溶接Ｙ２が行われる。また、上記圧延部３１のテーパ状の角度は、図３（ａ）に示すものでは、４５度に設定されているが、溶接時の開先幅や帯状鋼材５の厚み等によって適宜に設定される。   As shown in FIG. 3A, the rolling type groove processing machine 3 includes a pair of groove pinch rollers 30a and 30b that sandwich the strip-shaped steel material 5, and is provided at both ends of each groove pinch roller 30a and 30b. Is formed with a rolled portion 31 having a tapered diameter toward the outside. Grooves 51 are formed at both edge portions of the strip steel material 5 by rolling at the rolling portion 31. At the same time, by rolling both edge portions of the strip-shaped steel material 5 at each rolling section 31, both end portions in the width direction of the strip-shaped steel material 5 are held in the positioning state, and meandering in the width direction of the strip-shaped steel material 5 is suppressed. Thereby, the meandering of the strip-shaped steel material 5 is suppressed without arranging a special pressing side guide roller 504 (see FIG. 5) as in the conventional apparatus on the front side or the rear side of the rolling type groove processing machine 3. it can. In the molding machine 4, as shown in FIG. 3B, the inner surface welding Y1 and the outer surface welding Y2 are performed at the joint of the edge portion where the groove 51 is formed. Moreover, although the taper-shaped angle of the said rolling part 31 is set to 45 degree | times in what is shown to Fig.3 (a), it sets suitably by the groove width at the time of welding, the thickness of the strip | belt-shaped steel materials 5, etc. The

そして、上記開先ピンチローラー３０ａ，３０ｂの一方または両方を回転駆動させると、帯状鋼材５を幅方向に位置決めした状態で両エッジ部の開先加工を行いながら成形機４に送り込むことができる。   Then, when one or both of the groove pinch rollers 30a and 30b are driven to rotate, the grooved steel material 5 can be fed into the molding machine 4 while performing groove processing on both edge portions in a state where the belt-shaped steel material 5 is positioned in the width direction.

また、上記構成の圧延式開先加工機３では、切削によらず圧延により帯状鋼材５の両エッジ部の開先加工を行うので、切削粉が発生せず、切削粉の飛散に起因するトラブルが無くなり、しかも、開先加工速度を切削の場合よりも速くすることができる。   Moreover, in the rolling type beveling machine 3 having the above-described configuration, since both the edge portions of the strip-shaped steel material 5 are grooved by rolling regardless of cutting, no cutting powder is generated, and trouble caused by scattering of cutting powder. In addition, the groove working speed can be made faster than in the case of cutting.

以上のように、本実施の形態によるスパイラル鋼管の製造装置によれば、帯状鋼材５は、圧延式開先加工機３によって幅方向の蛇行が抑止された状態でエッジ部に開先加工されながら成形機４に送り込まれるので、スパイラル鋼管５０の溶接品質および生産性の向上を図ることができる。また、従来装置のような特別の押し付けサイドガイドローラー５０４を配置しなくても帯状鋼材５の蛇行を抑止でき、その分シンプルに装置を構成することができる。   As described above, according to the spiral steel pipe manufacturing apparatus according to the present embodiment, the strip-shaped steel material 5 is grooved at the edge portion in a state in which the meandering in the width direction is suppressed by the rolling type groove processing machine 3. Since it is sent to the molding machine 4, the welding quality and productivity of the spiral steel pipe 50 can be improved. Further, meandering of the strip-shaped steel material 5 can be suppressed without arranging a special pressing side guide roller 504 as in the conventional apparatus, and the apparatus can be simply configured accordingly.

なお、本発明は、上記実施の形態に限らず、適宜設計変更を施すことが可能である。
例えば、一対の開先ピンチローラーは、一方のローラー３０ａ（３０ｂ）が帯状鋼材５の両エッジ部を圧延により開先加工する圧延部３１を形成するもので、他方のローラー３０ｃは円筒状のものでもよい（図４（ａ）参照）。この場合、帯状鋼材５の一面側のエッジ部に開先５１が形成される（図４（ｂ）参照）。
また、開先ピンチローラー３０ａ，３０ｂの圧延部３１におけるテーパ形状は、凸状または凹状に湾曲して形成されていてもよい。 Note that the present invention is not limited to the above-described embodiment, and design changes can be made as appropriate.
For example, in the pair of groove pinch rollers, one roller 30a (30b) forms a rolling part 31 in which both edge parts of the strip-shaped steel material 5 are grooved by rolling, and the other roller 30c is cylindrical. Alternatively, see FIG. 4 (a). In this case, a groove 51 is formed at the edge portion on the one surface side of the strip-shaped steel material 5 (see FIG. 4B).
Moreover, the taper shape in the rolling part 31 of the groove pinch rollers 30a and 30b may be formed to be curved in a convex shape or a concave shape.

実施の形態によるスパイラル鋼管の製造装置の全体構成を示す側面図である。It is a side view which shows the whole structure of the manufacturing apparatus of the spiral steel pipe by embodiment. 実施の形態によるスパイラル鋼管の製造装置の全体構成を示す上面図である。It is a top view which shows the whole structure of the manufacturing apparatus of the spiral steel pipe by embodiment. 圧延式開先加工機における一対の開先ピンチローラーを示す平面図である。It is a top view which shows a pair of groove pinch roller in a rolling type groove processing machine. 圧延式開先加工機における一対の開先ピンチローラーの他の例を示す平面図である。It is a top view which shows the other example of a pair of groove pinch roller in a rolling type groove processing machine. 従来のスパイラル鋼管の製造装置の概略構成を示す上面図である。It is a top view which shows schematic structure of the manufacturing apparatus of the conventional spiral steel pipe.

符号の説明Explanation of symbols

１ アンコイラー
２ レベラー
３ 圧延式開先加工機（圧延式開先加工手段）
４ 成形機
５ 帯状鋼材
６ フレーム
１０ コイル
３０ａ，３０ｂ 開先ピンチローラー
３１ 圧延部
３２ ローラー面
５０ スパイラル鋼管
５１ 開先 1 Uncoiler 2 Leveler 3 Rolling groove processing machine (Rolling groove processing means)
4 Forming Machine 5 Strip Steel 6 Frame 10 Coil 30a, 30b Groove Pinch Roller 31 Rolling Section 32 Roller Surface 50 Spiral Steel Pipe 51 Groove

Claims (4)

連続した帯状鋼材からスパイラル鋼管を製造する装置であって、
帯状鋼材を螺旋状に成形造管しながら継ぎ目を溶接する成形機の入り側において、帯状鋼材の両エッジ部を圧延により開先加工しながら該帯状鋼材を上記成形機に送り込む圧延式開先加工手段を設置したことを特徴とするスパイラル鋼管の製造装置。 An apparatus for producing a spiral steel pipe from a continuous strip-shaped steel material,
Rolling-type groove processing that feeds the band-shaped steel material to the forming machine while forming a groove on both edges of the band-shaped steel material by rolling at the entrance side of the forming machine that welds the seam while forming and forming the band-shaped steel material spirally. An apparatus for producing a spiral steel pipe, characterized in that means are installed. 請求項１に記載のスパイラル鋼管の製造装置において、
上記圧延式開先加工手段は、帯状鋼材を挟持する一対の開先ピンチローラーを備え、少なくとも一方の開先ピンチローラーの両端部には、外側へ向けてテーパ状に大径となって帯状鋼材の両エッジ部を圧延する圧延部が形成されているスパイラル鋼管の製造装置。 In the manufacturing apparatus of the spiral steel pipe according to claim 1,
The rolling-type groove processing means includes a pair of groove pinch rollers for sandwiching the belt-shaped steel material, and at both ends of at least one groove pinch roller, a belt-shaped steel material having a large diameter tapered outward. The manufacturing apparatus of the spiral steel pipe in which the rolling part which rolls both edge parts of this is formed. 請求項１または２に記載のスパイラル鋼管の製造装置において、
上記成形機の入り側に設置される設備が同一のフレーム上に配設され、該フレームは、上記成形機へ送り込む帯状鋼材の進入角度を変更できるように揺動自在に設置されているスパイラル鋼管の製造装置。 In the manufacturing apparatus of the spiral steel pipe according to claim 1 or 2,
Equipment installed on the entrance side of the molding machine is disposed on the same frame, and the frame is installed in a swingable manner so as to be able to change the angle of entry of the strip steel material fed into the molding machine Manufacturing equipment. 請求項１ないし３のいずれかに記載のスパイラル鋼管の製造装置において、
上記成形機の入り側には、コイルから帯状鋼材を巻きほどくアンコイラーと、該アンコイラーから供給される帯状鋼材を平坦化するレベラーと、該レベラーから帯状鋼材が供給される上記圧延式開先加工手段とが設置され、上記アンコイラーは、帯状鋼材が略Ｕ字形状の軌跡を描いて上記レベラーに供給されるように配置されているスパイラル鋼管の製造装置。 In the spiral steel pipe manufacturing apparatus according to any one of claims 1 to 3,
On the entrance side of the molding machine, an uncoiler that unwinds the strip-shaped steel material from the coil, a leveler that flattens the strip-shaped steel material supplied from the uncoiler, and the rolling type groove processing means that the strip-shaped steel material is supplied from the leveler The uncoiler is an apparatus for manufacturing a spiral steel pipe in which a strip-shaped steel material is disposed so as to draw a substantially U-shaped trajectory and be supplied to the leveler.
JP2007049889A 2007-02-28 2007-02-28 Apparatus for manufacturing spiral steel pipe Pending JP2008212950A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61126923A (en) * 1984-11-22 1986-06-14 Nippon Kokan Kk <Nkk> Method and device for production of spiral steel pipe
JPH02205206A (en) * 1989-02-01 1990-08-15 Sumitomo Metal Ind Ltd Production of electric resistance welded steel pipe
JPH05161915A (en) * 1991-11-20 1993-06-29 Nippon Steel Corp Manufacture of spirally welded pipe
JPH11333516A (en) * 1998-05-22 1999-12-07 Mitsubishi Heavy Ind Ltd Device for forming spiral steel pipe
JP2003164909A (en) * 2001-11-28 2003-06-10 Kawasaki Steel Corp Method for manufacturing seam welded steel pipe
JP2004148337A (en) * 2002-10-29 2004-05-27 Jfe Steel Kk Method for forming joined part of welded steel pipe and apparatus for producing the welded steel pipe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61126923A (en) * 1984-11-22 1986-06-14 Nippon Kokan Kk <Nkk> Method and device for production of spiral steel pipe
JPH02205206A (en) * 1989-02-01 1990-08-15 Sumitomo Metal Ind Ltd Production of electric resistance welded steel pipe
JPH05161915A (en) * 1991-11-20 1993-06-29 Nippon Steel Corp Manufacture of spirally welded pipe
JPH11333516A (en) * 1998-05-22 1999-12-07 Mitsubishi Heavy Ind Ltd Device for forming spiral steel pipe
JP2003164909A (en) * 2001-11-28 2003-06-10 Kawasaki Steel Corp Method for manufacturing seam welded steel pipe
JP2004148337A (en) * 2002-10-29 2004-05-27 Jfe Steel Kk Method for forming joined part of welded steel pipe and apparatus for producing the welded steel pipe

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