JP2005144514A - Apparatus for bending shape steel - Google Patents

Apparatus for bending shape steel Download PDF

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JP2005144514A
JP2005144514A JP2003387964A JP2003387964A JP2005144514A JP 2005144514 A JP2005144514 A JP 2005144514A JP 2003387964 A JP2003387964 A JP 2003387964A JP 2003387964 A JP2003387964 A JP 2003387964A JP 2005144514 A JP2005144514 A JP 2005144514A
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shape steel
rotating arm
endless chain
steel
bending apparatus
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Takashi Sango
剛史 三五
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Abstract

<P>PROBLEM TO BE SOLVED: To simply change the curvature in a shape steel for bending. <P>SOLUTION: The tip end part of the shape steel 1 supported with a supporting rollers 6 is held with a guide mechanism 10 and a clamp 35 arranged at the tip part of a rotating arm 30 sandwiches the shape steel 1 and is fixed to the shape steel 1. While locally heating the tip end portion of the shape steel 1 with a heating part 40A in a high frequency induction heating device 40, the shape steel 1 is pushed to the axial direction with a conveying claw 5 fixed to an endless chain 3. In this way, the shape steel 1 is bent with the curvature according to the length L of the rotating arm 30. Therein, the rotating arm 30 is constituted by inserting so as to be slide-free to three pieces of arms 30A, 30B, 30C, and since a supporting base 25 as the rotating supported point of the rotating arm 30 is guided so as to be slide-free along a guide rail 20, the length of the rotating arm 30 can be adjusted by extending/shrinking the rotating arm 30. In this way, the curvature of the shape steel 1 can simply be changed by changing the length of the rotating arm 30. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、高周波誘導加熱装置により加熱して曲げ加工する形鋼曲げ加工装置に関する。   The present invention relates to a shape steel bending apparatus that is heated and bent by a high-frequency induction heating apparatus.

従来、この種の装置として例えば特許文献１には、高周波誘導加熱装置により形鋼を局部的に加熱し、シリンダなどの駆動手段により、パイプを軸方向に押し出すことにより、パイプの先端を挟持する回動アームが支点を中心に回動し、その回動アームの長さに応じた曲率で曲げ加工するパイプの熱間曲げ方法が開示されている。
特開昭５６−１１４５３３号公報 Conventionally, as a device of this type, for example, in Patent Document 1, a steel plate is locally heated by a high-frequency induction heating device, and a pipe is pushed out in an axial direction by a driving means such as a cylinder, thereby pinching the tip of the pipe. A hot bending method of a pipe is disclosed in which a rotating arm rotates about a fulcrum and is bent with a curvature corresponding to the length of the rotating arm.
JP-A-56-114533

上記のように構成されるパイプの熱間曲げ方法においては、回動アームの支点が固定されているため、回動アームの長さに応じたパイプの曲率でしか曲げ加工することができなかった。   In the hot bending method of the pipe configured as described above, since the fulcrum of the rotating arm is fixed, it can be bent only with the curvature of the pipe according to the length of the rotating arm. .

そこで、本発明は、このような問題を解決して、曲げ加工する形鋼の曲率を簡単に変更することが可能な形鋼曲げ加工装置を提供することを目的とする。   Then, an object of this invention is to solve such a problem and to provide the shape steel bending apparatus which can change the curvature of the shape steel to be bent easily.

前述の課題を解決するため、本発明の請求項１発明は、形鋼を高周波誘導加熱装置により加熱して曲げ加工する形鋼曲げ加工装置であって、前記形鋼を搬送する搬送装置と、この搬送装置で搬送される前記形鋼を案内保持するガイド機構と、案内レールにスライド自在に案内される支持ベースと、この支持ベースに回動自在に枢着して前記ガイド機構で保持される前記形鋼の先端を挟持する回動アームと、を備えた形鋼曲げ加工装置であって、前記回動アームを長さ調整可能に設けたことを特徴とする。   In order to solve the above-mentioned problems, the invention of claim 1 of the present invention is a shape steel bending apparatus for heating and bending a shape steel by a high frequency induction heating apparatus, and a conveying apparatus for conveying the shape steel, A guide mechanism for guiding and holding the shape steel transported by the transport device, a support base slidably guided by the guide rail, and pivotally attached to the support base and held by the guide mechanism A shape steel bending apparatus comprising: a turning arm for sandwiching a tip of the shape steel, wherein the turning arm is provided so as to be adjustable in length.

この請求項１の構成によれば、回動アームを伸縮すると、回動アームの支点となる支持ベースが案内レールに沿って移動し、回動アームの長さに応じて曲げ加工される形鋼の曲率の変更が可能である。   According to this configuration, when the rotating arm is extended and contracted, the support base serving as the fulcrum of the rotating arm moves along the guide rail and is bent according to the length of the rotating arm. The curvature of can be changed.

本発明の請求項２発明は、請求項１記載の形鋼曲げ加工装置において、前記回動アームが複数のアームで構成され、これら各アームをスライド自在に嵌め合わせて構成したことを特徴とする。   According to a second aspect of the present invention, in the shape steel bending apparatus according to the first aspect, the rotating arm is composed of a plurality of arms, and the arms are slidably fitted together. .

この請求項２の構成によれば、アームをスライドさせることによって回動アームが伸縮する。これにより、回動アームの長さに応じて曲げ加工される形鋼の曲率の変更が可能である。   According to the configuration of the second aspect, the rotating arm expands and contracts by sliding the arm. Thereby, the curvature of the shape steel bent according to the length of the rotating arm can be changed.

本発明の請求項３発明は、請求項１記載の形鋼曲げ加工装置において、前記搬送装置が、無端状チェーンと、この無端状チェーンを回転駆動する駆動装置と、前記無端状チェーンに固定して前記形鋼に係止する搬送爪とから成ることを特徴とする。   According to a third aspect of the present invention, in the shape steel bending apparatus according to the first aspect, the conveying device is fixed to the endless chain, a drive device that rotationally drives the endless chain, and the endless chain. And a conveying claw that is locked to the shape steel.

この請求項３の構成によれば、無端状チェーンを回転駆動すると、無端状チェーンに固定した搬送爪により、形鋼が軸方向に押し出される。   According to the third aspect of the present invention, when the endless chain is rotationally driven, the shape steel is pushed out in the axial direction by the conveying claw fixed to the endless chain.

本発明の請求項４発明は、請求項１記載の形鋼曲げ加工装置において、前記ガイド機構が、前記形鋼を支持する支持ローラと、この支持ローラに対して上下動可能に設けた上部押えローラと、前記形鋼の左右側から挟持するとともに、形鋼に対して左右方向に移動可能に設けた左右一対の側部ローラとを備えたことを特徴とする。   According to a fourth aspect of the present invention, in the structural steel bending apparatus according to the first aspect, the guide mechanism includes a support roller that supports the structural steel, and an upper presser provided so as to be vertically movable with respect to the support roller. It is characterized by comprising a roller and a pair of left and right side rollers provided so as to be sandwiched from the left and right sides of the shape steel and movable in the left-right direction with respect to the shape steel.

この請求項４の構成によれば、上部押えローラと側部ローラは可動するから、形鋼の大きさに応じて上部押えローラと側部ローラの位置が調整可能となる。   According to the fourth aspect of the present invention, since the upper presser roller and the side roller are movable, the positions of the upper presser roller and the side roller can be adjusted according to the size of the shape steel.

請求項１の発明によれば、形鋼を高周波誘導加熱装置により加熱して曲げ加工する形鋼曲げ加工装置であって、前記形鋼を搬送する搬送装置と、この搬送装置で搬送される前記形鋼を案内保持するガイド機構と、案内レールにスライド自在に案内される支持ベースと、この支持ベースに回動自在に枢着して前記ガイド機構で保持される前記形鋼の先端を挟持する回動アームと、を備えた形鋼曲げ加工装置であって、前記回動アームを長さ調整可能に設けたものであるから、回動アームの長さを可変することによって、形鋼の曲率を簡単に変更することができる。   According to invention of Claim 1, it is the shape steel bending apparatus which heats and shapes a shape steel with a high frequency induction heating apparatus, Comprising: The conveyance apparatus which conveys the said shape steel, The said conveyance apparatus A guide mechanism that guides and holds the shape steel, a support base that is slidably guided by the guide rail, and pivotally pivoted on the support base so as to sandwich the tip of the shape steel that is held by the guide mechanism. And a pivoting arm, wherein the pivoting arm is provided so that the length of the pivoting arm can be adjusted. Therefore, by changing the length of the pivoting arm, the curvature of the section steel can be changed. Can be easily changed.

本発明の請求項２発明は、請求項１記載の形鋼曲げ加工装置において、前記回動アームが複数のアームで構成され、これら各アームをスライド自在に嵌め合わせて構成したものであるから、アームをスライドさせて形鋼の曲率を簡単に変更することができる。   The invention according to claim 2 of the present invention is the shaped steel bending apparatus according to claim 1, wherein the rotating arm is constituted by a plurality of arms, and each of the arms is slidably fitted. The curvature of the shape steel can be easily changed by sliding the arm.

本発明の請求項３発明は、請求項１記載の形鋼曲げ加工装置において、前記搬送装置が、無端状チェーンと、この無端状チェーンを回転駆動する駆動装置と、前記無端状チェーンに固定して前記形鋼に係止する搬送爪とから成るものであるから、形鋼に搬送爪に引っ掛けて無端状チェーンの回転により形鋼を搬送することにより、サイズの異なる形鋼であっても形鋼を安定的に搬送することができる。   According to a third aspect of the present invention, in the shape steel bending apparatus according to the first aspect, the conveying device is fixed to the endless chain, a drive device that rotationally drives the endless chain, and the endless chain. Therefore, even if the shape steels are of different sizes, they can be hooked onto the shape claw and conveyed by rotating the endless chain. Steel can be conveyed stably.

本発明の請求項４発明は、請求項１記載の形鋼曲げ加工装置において、前記ガイド機構が、前記形鋼を支持する支持ローラと、この支持ローラに対して上下動可能に設けた上部押えローラと、前記形鋼の左右側から挟持するとともに、形鋼に対して左右方向に移動可能に設けた左右一対の側部ローラとを備えたものであるから、上部押えローラと側部ローラの位置を調整することでサイズの異なる形鋼であっても安定的に保持することができる。   According to a fourth aspect of the present invention, in the structural steel bending apparatus according to the first aspect, the guide mechanism includes a support roller that supports the structural steel, and an upper presser provided so as to be vertically movable with respect to the support roller. The roller includes a pair of left and right side rollers that are sandwiched from the left and right sides of the shape steel and are movable in the left-right direction with respect to the shape steel. By adjusting the position, shape steels of different sizes can be stably held.

以下、本考案の実施例を図１〜図３を参照して説明する。図１に示すように、本実施の形態の曲げ加工装置は、形鋼１を搬送する搬送装置２と、この搬送装置２で搬送される形鋼１を案内保持するガイド機構10と、案内レール20にスライド自在に案内される支持ベース25と、この支持ベース25に回動自在に枢着して前記ガイド機構10で保持される形鋼１の先端を挟持する回動アーム30とを備えた概略構成となっている。   Embodiments of the present invention will be described below with reference to FIGS. As shown in FIG. 1, a bending apparatus according to the present embodiment includes a conveying device 2 that conveys a section steel 1, a guide mechanism 10 that guides and holds the shape steel 1 conveyed by the conveying device 2, and a guide rail. And a support base 25 slidably guided by 20 and a pivot arm 30 pivotally attached to the support base 25 and holding the tip of the shape steel 1 held by the guide mechanism 10. It has a schematic configuration.

前記搬送装置２は、図２に示すように、無端状チェーン３と、この無端状チェーン３の駆動装置たる駆動モータ４と、前記無端状チェーン３に固定する搬送爪５とからなり、支持ローラ６で支持される形鋼１の下端に搬送爪５に引っ掛け、無端状チェーン３の回転により形鋼１を軸方向に押し出して搬送するようにしている。   As shown in FIG. 2, the transport device 2 includes an endless chain 3, a drive motor 4 that is a drive device for the endless chain 3, and a transport claw 5 that is fixed to the endless chain 3. 6, the bottom end of the shape steel 1 supported by 6 is hooked on the conveying claw 5, and the endless chain 3 is rotated to push the shape steel 1 in the axial direction for conveyance.

前記ガイド機構10は、図３に示すように、高周波誘導加熱装置40の加熱部40Ａに近接して、曲げ加工される形鋼１の変動を規制するように保持するものであって、前記支持ローラ６に対して上下動自在に設けた上部押えローラ11と、千鳥状に配した左右方向に移動可能に設けた左右押えローラ12,13とからなる。これら各押えローラ11,12,13を組み付けるフレーム（図示しない）には、それぞれ螺子杆15Ａ,15Ｂに架設され、この螺子杆15Ａ,15Ｂにそれぞれ螺着された取付座16に前記各押えローラ11,12,13が枢着されている。また、一方の螺子杆15Ａには図示しないモータなどが連結されるとともに、その螺子杆15Ａの回転を連結ベルト17によって伝達している。これにより、ハンドルなどより、一方の螺子杆15Ａを回転されるとともに、その螺子杆15Ａの回転を連結ベルト17を介して他方の螺子杆15Ｂに伝達することにより、螺子杆15Ａ,15Ｂに螺着された取付座16に枢着した各押えローラ11,12,13が移動するようになっている。なお、図中、41は高周波誘導加熱装置の整合器、42は変成器である。   As shown in FIG. 3, the guide mechanism 10 is provided in the vicinity of the heating unit 40A of the high-frequency induction heating device 40 so as to restrict the fluctuation of the shape steel 1 to be bent. It comprises an upper presser roller 11 provided so as to be movable up and down with respect to the roller 6 and left and right presser rollers 12 and 13 provided in a zigzag manner so as to be movable in the left and right directions. Frames (not shown) for assembling these presser rollers 11, 12, and 13 are respectively installed on screw rods 15A and 15B. , 12,13 are pivotally attached. Further, a motor (not shown) or the like is connected to one screw rod 15A, and the rotation of the screw rod 15A is transmitted by a connecting belt 17. As a result, one screw rod 15A is rotated by a handle or the like, and the rotation of the screw rod 15A is transmitted to the other screw rod 15B via the connecting belt 17, thereby being screwed to the screw rods 15A and 15B. Each presser roller 11, 12, 13 pivotally attached to the mounting seat 16 is moved. In the figure, 41 is a matching unit of the high-frequency induction heating device, and 42 is a transformer.

前記回動アーム30は複数のアーム、本実施例においては、３本のアーム30Ａ,30Ｂ,30Ｃをスライド自在に嵌め合わせて構成され、その先端のアーム30Ｃに形鋼１の先端を挟み付けるクランプ35を設けている。   The rotary arm 30 is composed of a plurality of arms, in the present embodiment, three arms 30A, 30B, 30C, which are slidably fitted together, and a clamp that clamps the tip of the section steel 1 to the arm 30C at the tip. 35 is provided.

以上のように構成される本実施例の曲げ加工装置によれば、支持ローラ６で支持される形鋼１の先端をガイド機構10により保持するとともに、回動アーム30の先端に設けたクランプ35を形鋼１の先端に挟み付けて固定する。そして、高周波誘導加熱装置40の加熱部40Ａで形鋼１の先端部分を局部的に加熱しながら、駆動モータ４により無端状チェーン３を回転させて、無端状チェーン３に固定する搬送爪５と係止する形鋼１を軸方向に押し出す。これにより、形鋼１の先端に固定した回動アーム30が支持ベース25を支点として回動し、回動アーム30の長さＬに応じた曲率で形鋼１が曲げ加工される。すなわち、形鋼１の曲率は回動アーム30の長さＬによって決定されるが、回動アーム30が、３本のアーム30Ａ,30Ｂ,30Ｃをスライド自在に嵌め合わせて構成されるとともに、回動アーム30の回動支点となる支持ベース25が案内レール20に沿ってスライド自在に案内されているから、回動アーム30を伸縮させることによって回動アーム30の長さ調整が可能となる。これにより、回動アーム30の長さを変えて形鋼１の曲率を簡単に変更することができる。   According to the bending apparatus of the present embodiment configured as described above, the tip of the structural steel 1 supported by the support roller 6 is held by the guide mechanism 10, and the clamp 35 provided at the tip of the rotating arm 30 is provided. Is clamped to the tip of the section steel 1 and fixed. A conveying claw 5 for fixing the endless chain 3 to the endless chain 3 by rotating the endless chain 3 by the drive motor 4 while locally heating the tip of the section steel 1 by the heating unit 40A of the high frequency induction heating device 40; The structural steel 1 to be locked is pushed out in the axial direction. Thereby, the turning arm 30 fixed to the front end of the shape steel 1 is turned about the support base 25, and the shape steel 1 is bent with a curvature corresponding to the length L of the turning arm 30. In other words, the curvature of the section 1 is determined by the length L of the rotating arm 30, but the rotating arm 30 is configured by slidably fitting the three arms 30A, 30B, 30C, and rotating. Since the support base 25 serving as a pivot point of the movable arm 30 is slidably guided along the guide rail 20, the length of the pivot arm 30 can be adjusted by extending and retracting the pivot arm 30. Thereby, the curvature of the shaped steel 1 can be easily changed by changing the length of the rotating arm 30.

また、高周波誘導加熱装置40の加熱部40Ａに近接して形鋼１の動きを規制するガイド機構10は、上部押えローラ11と、左右押えローラ12,13とからなり、上部押えローラ11が支持ローラ６に対して上下動自在であり、かつ、左右押えローラ12,13が左右方向に移動可能に設けられているから、サイズの異なる形鋼１を曲げ加工する際、その形鋼１のサイズに応じて調整可能であり、種々異なるサイズの異なる形鋼１を安定した状態で保持することが可能である。さらに、形鋼１を搬送する搬送装置２が、無端状チェーン３に固定する搬送爪５を形鋼１の下端に引っ掛け、無端状チェーン３の回転により押し出ように構成されているから、サイズの異なる形鋼１を安定的に搬送することが可能となる。すなわち、例えば、シリンダ等で形鋼１を押し出す場合、形鋼１の長さに応じてシリンダの位置を変えるなどの対策が必要であるが、無端状チェーン３に固定する搬送爪５を形鋼１の下端に引っ掛け、無端状チェーン３の回転により押し出す構成であれば、形鋼１の後端部が無端状チェーン３上に位置すれば、形鋼１を押し出すことが可能であるから、形鋼１の長さの制約を受けにくい。   The guide mechanism 10 that restricts the movement of the shape steel 1 in the vicinity of the heating unit 40A of the high-frequency induction heating device 40 includes an upper presser roller 11 and left and right presser rollers 12 and 13, which are supported by the upper presser roller 11. Since the left and right presser rollers 12 and 13 are provided so as to be movable in the left and right directions with respect to the roller 6, when bending the section steel 1 having a different size, the size of the section steel 1 The different shape steels 1 having different sizes can be held in a stable state. Furthermore, since the conveying device 2 that conveys the shaped steel 1 is configured so that the conveying claw 5 fixed to the endless chain 3 is hooked on the lower end of the shaped steel 1 and pushed out by the rotation of the endless chain 3. It is possible to stably convey the shape steels 1 having different sizes. That is, for example, when the shape steel 1 is pushed out by a cylinder or the like, it is necessary to take measures such as changing the position of the cylinder according to the length of the shape steel 1, but the shape of the conveying claw 5 to be fixed to the endless chain 3 If the rear end of the structural steel 1 is positioned on the endless chain 3, the structural steel 1 can be extruded if it is hooked on the lower end of 1 and pushed out by rotation of the endless chain 3. Difficult to be restricted by the length of steel 1.

以上、本発明の実施例を詳述したが、本発明は、前記実施例に限定されるものではなく、本発明の要旨の範囲内で種々の変形実施が可能である。例えば、搬送装置の例として無端状チェーンと、この無端状チェーンに固定する搬送爪で構成した例を示したが、必ずしもこの構成に限定されるものではなく、各種の搬送装置を用いることができる。また、ガイド機構を構成する上部押えローラ11と、左右押えローラ12,13を可動させる機構なども適宜選定すればよい。   As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, as an example of the transport device, an example of an endless chain and a transport claw fixed to the endless chain has been shown. However, the present invention is not necessarily limited to this configuration, and various transport devices can be used. . Further, a mechanism for moving the upper presser roller 11 constituting the guide mechanism and the left and right presser rollers 12 and 13 may be appropriately selected.

本発明の曲げ加工装置の概略を示す平面図である。It is a top view which shows the outline of the bending apparatus of this invention. 同上曲げ加工装置における搬送装置を示す斜視図である。It is a perspective view which shows the conveying apparatus in a bending processing apparatus same as the above. 同上曲げ加工装置におけるガイド機能を示す斜視図である。It is a perspective view which shows the guide function in a bending processing apparatus same as the above.

符号の説明Explanation of symbols

１ 形鋼
２ 搬送装置
３ 無端状チェーン
４ 駆動モータ（駆動手段）
５ 搬送爪
６ 支持ローラ
10 ガイド機構
11 上部押えローラ
12,13 左右押えローラ
20 案内レール
25 支持ベース
30 回動アーム
30Ａ,30Ｂ,30Ｃ アーム
40 高周波誘導加熱装置 DESCRIPTION OF SYMBOLS 1 Shape steel 2 Conveying device 3 Endless chain 4 Drive motor (drive means)
5 Transport claw 6 Support roller
10 Guide mechanism
11 Upper presser roller
12,13 Left and right presser rollers
20 Guide rail
25 Support base
30 Rotating arm
30A, 30B, 30C arm
40 High frequency induction heating device

Claims (4)

形鋼を高周波誘導加熱装置により加熱して曲げ加工する形鋼曲げ加工装置であって、前記形鋼を搬送する搬送装置と、この搬送装置で搬送される前記形鋼を案内保持するガイド機構と、案内レールにスライド自在に案内される支持ベースと、この支持ベースに回動自在に枢着して前記ガイド機構で保持される前記形鋼の先端を挟持する回動アームとを備えた形鋼曲げ加工装置であって、前記回動アームを長さ調整可能に設けたことを特徴とする形鋼曲げ加工装置。   A shape steel bending apparatus that heats and shapes a shape steel by a high frequency induction heating device, the conveyance device conveying the shape steel, and a guide mechanism for guiding and holding the shape steel conveyed by the conveyance device A shape steel comprising a support base that is slidably guided by a guide rail, and a pivot arm pivotally attached to the support base and holding a tip of the shape steel held by the guide mechanism It is a bending apparatus, The shape steel bending apparatus characterized by providing the said rotation arm so that length adjustment is possible. 前記回動アームが複数のアームで構成され、これら各アームをスライド自在に嵌め合わせて構成したことを特徴とする請求項１記載の形鋼曲げ加工装置。 The shape steel bending apparatus according to claim 1, wherein the rotating arm includes a plurality of arms, and the arms are slidably fitted together. 前記搬送装置が、無端状チェーンと、この無端状チェーンを回転駆動する駆動装置と、前記無端状チェーンに固定して前記形鋼に係止する搬送爪とから成ることを特徴とする請求項１記載の形鋼曲げ加工装置。 The said conveying apparatus consists of an endless chain, the drive device which rotationally drives this endless chain, and the conveyance nail | claw fixed to the said endless chain, and latching to the said shape steel. Shaped steel bending machine as described. 前記ガイド機構が、前記形鋼を支持する支持ローラと、この支持ローラに対して上下動可能に設けた上部押えローラと、左右方向に移動可能に設けた左右押えローラとを備えたことを特徴とする請求項１記載の形鋼曲げ加工装置。 The guide mechanism includes a support roller that supports the shape steel, an upper presser roller that can be moved up and down with respect to the support roller, and a left and right presser roller that is movable in the left-right direction. The shape steel bending apparatus according to claim 1.
JP2003387964A 2003-11-18 2003-11-18 Apparatus for bending shape steel Pending JP2005144514A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100941366B1 (en) 2009-04-20 2010-02-10 (주)케이티중공업 Method for manufacturing drum for heat recovery steam generator using frequency-heat-treatment
CN101987331A (en) * 2009-07-31 2011-03-23 江苏申港锅炉有限公司 Large-diameter small-bending radius medium frequency pipe bender
CN102847764A (en) * 2011-06-28 2013-01-02 第一高周波工业株式会社 Bending processing device for metal tube
KR101372504B1 (en) * 2013-11-07 2014-03-11 정희채 High frequency bending device for section shape steel
KR101604613B1 (en) 2014-01-10 2016-03-18 두산중공업 주식회사 Bent Pipe Bending Apparatus and Method of Bending
CN106404555A (en) * 2016-11-04 2017-02-15 中国建材检验认证集团江苏有限公司 Rebar repeated bending tester
CN107983808A (en) * 2017-11-29 2018-05-04 无锡市汇鼎金属制管有限公司 A kind of metal tube processing molding machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100941366B1 (en) 2009-04-20 2010-02-10 (주)케이티중공업 Method for manufacturing drum for heat recovery steam generator using frequency-heat-treatment
CN101987331A (en) * 2009-07-31 2011-03-23 江苏申港锅炉有限公司 Large-diameter small-bending radius medium frequency pipe bender
CN102847764A (en) * 2011-06-28 2013-01-02 第一高周波工业株式会社 Bending processing device for metal tube
KR101372504B1 (en) * 2013-11-07 2014-03-11 정희채 High frequency bending device for section shape steel
KR101604613B1 (en) 2014-01-10 2016-03-18 두산중공업 주식회사 Bent Pipe Bending Apparatus and Method of Bending
CN106404555A (en) * 2016-11-04 2017-02-15 中国建材检验认证集团江苏有限公司 Rebar repeated bending tester
CN106404555B (en) * 2016-11-04 2023-08-11 中国建材检验认证集团江苏有限公司 Repeated bending test machine for reinforcing steel bars
CN107983808A (en) * 2017-11-29 2018-05-04 无锡市汇鼎金属制管有限公司 A kind of metal tube processing molding machine

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