JPH08187521A - Manufacture for u-type bend pipe with comparatively large curvature - Google Patents
Manufacture for u-type bend pipe with comparatively large curvatureInfo
- Publication number
- JPH08187521A JPH08187521A JP6340997A JP34099794A JPH08187521A JP H08187521 A JPH08187521 A JP H08187521A JP 6340997 A JP6340997 A JP 6340997A JP 34099794 A JP34099794 A JP 34099794A JP H08187521 A JPH08187521 A JP H08187521A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- bending
- large curvature
- thin metal
- metal rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、管材を屈曲して実施す
る比較的曲率の大きいＵ形ベンド管の製法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a U-shaped bend pipe having a relatively large curvature, which is implemented by bending a pipe material.
【０００２】[0002]
【従来の技術】管材を屈曲してＵ形ベンド管を製造する
ことは従来より行われているが、その曲率が管材径に対
し過度に大きい場合は通常のパイプベンダーでは品質の
良好な状態に製造できないのであって、このため従来で
は例えば、管材の中に砂などを入れて全体を加熱し、こ
れを適当な曲げ具により任意な曲率で曲げるようにする
などしている。2. Description of the Related Art It has been conventionally practiced to bend a pipe material to manufacture a U-shaped bend pipe. However, when the curvature is excessively large with respect to the diameter of the pipe material, a normal pipe bender produces good quality. Since it cannot be manufactured, conventionally, for example, sand or the like is put in a pipe material to heat the whole, and this is bent with an arbitrary curvature by an appropriate bending tool.
【０００３】[0003]
【発明が解決しようとする課題】上記したような従来
の、管材の曲げによる比較的曲率の大きいＵ形ベンド管
の製法では曲げ処理された後の屈曲部が偏平化したり、
屈曲部の曲げ半径内側部に皺が生じたり、若しくは管壁
の厚さに偏りが生じるなどの問題が未だ十分に解消され
ず、その修正処理に多くの手間が必要となったり、或い
はそのような問題は解消されるにはされても製造に多く
の手間が必要となるなどして不経済なものとなっている
のである。In the above-mentioned conventional method of manufacturing a U-shaped bend pipe having a relatively large curvature due to bending of a pipe material, a bent portion after bending is flattened,
Problems such as wrinkles on the inside of the bending radius of the bending portion or unevenness in the thickness of the tube wall have not yet been sufficiently solved, and a lot of trouble is required for the correction process, or such Even if such problems are solved, it requires a lot of labor for manufacturing, which is uneconomical.
【０００４】本発明は斯かる事情の下、管材の曲げ処理
によることを前提として、品質のよい比較的曲率の大き
いＵ形ベンド管を経済的かつ能率的に得ることを目的と
する。[0004] Under such circumstances, an object of the present invention is to economically and efficiently obtain a high-quality, relatively large-curvature U-shaped bend pipe on the premise that the pipe material is bent.
【０００５】[0005]
【課題を解決するための手段及び作用】上記目的を達成
するため本発明に係る比較的曲率の大きいＵ形ベンド管
の製法においては、管材の内方に金属細棒を密状に差込
み、続いてこの状態の管材をプレス機及び曲げ型の使用
によりＵ形に屈曲し、その後、管材を加熱してこの管材
から金属細棒を抜き取るように実施することを特徴とす
る。In order to achieve the above object, in a method of manufacturing a U-shaped bend pipe having a relatively large curvature according to the present invention, a thin metal rod is densely inserted inside a pipe material. It is characterized in that the tube in the leverage state is bent into a U-shape by using a press machine and a bending die, and thereafter, the tube is heated to extract a thin metal rod from the tube.
【０００６】本発明によれば、管材は従来同様に屈曲時
に偏平化しようとするが、管材内の金属細棒群がこれに
効果的に抵抗し、管材は殆ど偏平化するものとならな
い。また金属細棒の抜き取りのさい管材の外面側を加熱
することは管材からの金属細棒の抜け出しを円滑とな
す。さらに金属細棒は管材から抜き取られる過程で管材
の不規則な変形を修正するように作用する。According to the present invention, the pipe material tends to be flattened when bent as in the conventional case, but the thin metal rod group in the pipe material effectively resists this and the pipe material hardly flattens. Heating the outer surface side of the tube at the time of pulling out the thin metal rod facilitates the removal of the thin metal rod from the tube. In addition, the metal rod acts to correct irregular deformation of the tubing during its removal from the tubing.
【０００７】上記した本発明において、鋼線に銅メッキ
した金属細棒を使用すると、その銅成分が管材と金属細
棒の摩擦、或いは金属細棒同志のそれを小さくなし、そ
の抜き取りを容易となす。In the above-mentioned present invention, when a metal thin rod plated with copper on a steel wire is used, the copper component makes the friction between the tube material and the metal thin rod or that between the metal thin rods small, so that the extraction is easy. Eggplant
【０００８】また管材を支持するための一対のローラ
と、これらローラに関連した位置の縦線上をプレス機で
上下動される押し型とを形成し、各ローラの周面の周方
向部位及び、押し型の円弧状先端面の円弧方向部位に前
記管材の直径に適合した円弧状断面となされた案内溝を
設けたものとした曲げ型を使用すれば、管材は曲げ型の
案内作用により偏平化を抑制されつつ迅速にＵ形に屈曲
される。In addition, a pair of rollers for supporting the tube material and a pressing die which is moved up and down by a press machine on a vertical line at a position related to the rollers are formed, and a circumferential portion of a circumferential surface of each roller and If a bending die having a guide groove having an arc-shaped cross section adapted to the diameter of the tube material is provided in the arc-shaped portion of the arc-shaped tip surface of the pressing die, the tube material is flattened by the guiding action of the bending die. And is quickly bent into a U-shape while being suppressed.
【０００９】さらに、特定直径の透孔を具備したリング
部材に引張部材を固着したものとした引抜き具を使用す
ると、管材の内方に差し込まれた金属細棒群が前記透孔
及び別途に用意された楔形打込み棒を介してリング部材
に強固に固定されると共に、引張部材を介して強力な引
張力を付与されて管材から簡易に抜き取られるものとな
る。Further, when a puller is used in which a tension member is fixed to a ring member having a through hole having a specific diameter, a group of fine metal rods inserted into the inside of the tube is prepared separately from the through hole and the separately provided. In addition to being firmly fixed to the ring member via the wedge-shaped driving rod thus formed, a strong pulling force is applied through the pulling member, and the tube is easily extracted from the tube.
【００１０】[0010]
【実施例】以下、図１〜図６を参照しつつ本発明の一実
施例を説明する。先ず長尺の鋼管を切断するなどして図
１に示すような適当長さの管材１を形成し、一方では銅
メッキされた番線をこの管材１の寸法よりも僅かに長い
程度に切断するなどして適当長さの金属細棒２を形成す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, a tube 1 having an appropriate length as shown in FIG. 1 is formed by cutting a long steel tube or the like, while a copper-plated wire is cut to a length slightly longer than the dimension of the tube 1. Thus, a metal rod 2 having an appropriate length is formed.
【００１１】そして、この金属細棒２を同図に示すよう
に管材１の内方へ手作業により密状に差し込む。このさ
い金属細棒群２・・・の一端部分は管材１の一端から適
当長さ（例えば１０ｃｍ程度）張り出した状態となす。Then, the thin metal rod 2 is manually and densely inserted into the tube 1 as shown in FIG. One end of the thin metal rod group 2... Protrudes from the one end of the tube 1 by an appropriate length (for example, about 10 cm).
【００１２】続いて、金属細棒２の挿入された管材１を
図２に示すようなプレス機３及び曲げ型４の使用により
Ｕ形に屈曲するのであり、具体的には次のようにする。Subsequently, the tube 1 into which the thin metal rod 2 is inserted is bent into a U-shape by using a press machine 3 and a bending mold 4 as shown in FIG. .
【００１３】即ち、曲げ型４は固定部分ａに軸着された
一対のローラ５、５と、これらローラ５、５に関連した
位置の縦線上をプレス機３で上下動される押し型６とか
らなり、各ローラ５の周面の周方向部位及び、押し型６
の円弧状先端面の円弧方向部位に管材１の直径に適合し
た円弧状断面となされた案内溝５ａ、６ａ（図３参照）
を設けたものとなす。That is, the bending die 4 includes a pair of rollers 5, 5 mounted on the fixed portion a, and a pressing die 6 moved up and down by the press machine 3 on a vertical line at a position related to these rollers 5, 5. And a peripheral portion of the peripheral surface of each roller 5 and a pressing die 6
Guide grooves 5a, 6a having an arc-shaped cross section adapted to the diameter of the tube material 1 at the arc-shaped portion of the arc-shaped tip face (see FIG. 3).
Shall be provided.
【００１４】そして一対のローラ５、５の案内溝５ａ、
５ａ上に、金属細棒２の挿入された管材１を載せ、一方
ではプレス機３の出力端３ａに固定された押し型６を降
下作動させてこれの案内溝６ａを管材１の上部に嵌合さ
せ、さらに降下作動させて管材１を押し曲げるようにす
る。このさい押し型６は一挙に降下させず管材１の水平
位置を適当に変化させつつ徐々に降下させるなどしてそ
の曲がりをゆっくりと大きくなし、最終的に図２に仮想
線ｋで示すようにＵ形に曲げた状態となす。The guide grooves 5a of the pair of rollers 5, 5
The tube 1 into which the metal rod 2 is inserted is placed on the tube 5a, while the pressing die 6 fixed to the output end 3a of the press machine 3 is moved down to fit the guide groove 6a of the tube into the upper part of the tube 1. Then, the tube 1 is pushed and bent by lowering operation. The pushing die 6 is not lowered all at once, and is gradually lowered while appropriately changing the horizontal position of the pipe material 1, so that the bending is gradually increased and finally, as shown by a virtual line k in FIG. It is bent into a U shape.
【００１５】この曲げ加工中、管材１の曲がり部分は偏
平化しようとするが、この部分に密状に詰まった金属細
棒群２・・・がこれに強力に抵抗するほか、ローラ５、
５及び押し型６の案内溝５ａ、６ａも管材１表面と密状
に接してその偏平化の阻止作用を補助するものとなり、
管材１は殆ど偏平化するものとならない。During the bending process, the bent portion of the tube material 1 tends to be flattened, but the group of fine metal rods 2... Densely packed in this portion strongly resists this.
The guide grooves 5a and 6a of the pressing die 5 and the pressing die 6 are also in close contact with the surface of the tube material 1 to assist the flattening action thereof,
The tube 1 hardly flattens.
【００１６】かくしてＵ形に曲げられた管材１及び金属
細棒２は図４に示すような形態のものとなる。Thus, the pipe material 1 and the thin metal rod 2 which are bent in the U shape have a form as shown in FIG.
【００１７】上記した管材１の曲げ加工中、管材１の曲
がり半径の内外位置の差によってその曲がり方向の長さ
が異ったものとなることから、金属細棒２は管材１の曲
がり変形中に他の金属細棒２との間に滑りを生じ、これ
が原因で金属細棒２の端部で形成された端面２ａは図４
に示すような斜状となる。このさいの金属細棒２相互間
の滑りは管材１の曲がり変形を容易となす上で寄与する
ものとなる。During the bending of the tube 1, the length of the tube 1 in the bending direction varies depending on the difference between the inside and outside positions of the bending radius of the tube 1. Therefore, the thin metal rod 2 is bent during the bending of the tube 1. As shown in FIG. 4, an end surface 2a formed at the end of the thin metal rod 2 is caused to slide between the thin metal rod 2 and the other end.
It becomes oblique as shown in FIG. The sliding between the thin metal rods 2 at this time contributes to facilitate bending deformation of the tube material 1.
【００１８】この後、管材１から、適宜な用具を使用し
て金属細棒２を抜き取るのであるが、具体的には次のよ
うになす。Thereafter, the thin metal rod 2 is extracted from the tube material 1 using an appropriate tool. Specifically, the following is performed.
【００１９】即ち、図５に示すように板部材７に特定幅
の切欠溝７ａを設けたものを適宜な作業面上に固定部材
８などを介して起立状に固定する。That is, as shown in FIG. 5, a plate member 7 provided with a notch groove 7a of a specific width is fixed in an upright state on a suitable work surface via a fixing member 8 or the like.
【００２０】そして、一方では特定直径となされた透孔
９ａを具備したリング部材９を形成し、これにＵ形棒と
なされた引張部材１０を固着したものとした引抜き具を
形成する。On the other hand, on the other hand, a ring member 9 having a through hole 9a having a specific diameter is formed, and a pulling member in which a tension member 10 formed as a U-shaped bar is fixed thereto is formed.
【００２１】斯かる準備の後、図４に示した状態の管材
１の金属細棒群２・・・を前記切欠溝７ａ内へ上方から
嵌挿して管材１の一端面１ａを板部材７の一方の面に当
接させた状態となす。After such preparation, the group of thin metal rods 2 of the tube 1 in the state shown in FIG. 4 is inserted into the cutout groove 7a from above and the one end face 1a of the tube 1 is It is in a state of being in contact with one surface.
【００２２】続いて、この状態の金属細棒群２・・・に
リング部材９を外嵌し、この状態を保持して楔形打込み
矢ｗを金属細棒群２・・・の端面２ａに金属細棒２と沿
った方向へ打ち込む。これにより金属細棒群２・・・は
矢ｗの楔作用でその外径が拡大されてリング部材９の透
孔９ａ周面に強力に押しつけられ、抜出し不可能に固定
された状態となる。Subsequently, the ring member 9 is externally fitted to the thin metal rod group 2 ... In this state, and in this state, the wedge-shaped driving arrow w is applied to the end face 2a of the thin metal rod group 2. Drive in the direction along the thin rod 2. Thereby, the outer diameter of the group of thin metal rods 2... Is enlarged by the wedge action of the arrow w, and is strongly pressed against the peripheral surface of the through hole 9 a of the ring member 9, so that the metal rod group 2 is fixed so as not to be pulled out.
【００２３】続いて、管材１の曲がり部分の外表面をガ
スバーナなどで加熱しながら引張部材１０にチェーンブ
ロックｂなどで適当な引張力を付与する。これにより金
属細線２が管材１を通じて加熱され、その表面が銅成分
の作用により滑り易くなり、金属細線２は管材１から円
滑に抜け出るものとなる。この抜け出る過程で、金属細
線群２・・・は加熱により軟らかくなっている管材１の
不規則な変形を修正するという重要な作用を奏するもの
となる。Subsequently, an appropriate tensile force is applied to the tension member 10 by a chain block b or the like while heating the outer surface of the bent portion of the tube material 1 with a gas burner or the like. As a result, the thin metal wire 2 is heated through the tube 1, and its surface becomes slippery due to the action of the copper component, so that the thin metal wire 2 comes out of the tube 1 smoothly. In the process of coming out, the group of fine metal wires 2 has an important effect of correcting irregular deformation of the tube material 1 which has been softened by heating.
【００２４】かくして得られたＵ形の管材１は不要長さ
部分を切除され、続いて各端面を適宜に面取り処理され
て図６に示すようなＵ形ベンド管となされる。The U-shaped tube 1 thus obtained is cut off at an unnecessary length, and each end face is appropriately chamfered to form a U-shaped bend tube as shown in FIG.
【００２５】なお、抜き取られた金属細棒２は管材１の
曲がり部分の内方に位置していた末端部分を切り除かれ
た後に再び使用に供される。このさい金属細棒２の余分
長さが大きい程、再使用し得る回数が増すものとなる。The extracted thin metal rod 2 is used again after the end portion located inside the bent portion of the tube material 1 is cut off. In this case, as the extra length of the thin metal rod 2 is larger, the number of reusable times increases.
【００２６】[0026]
【発明の効果】上記した本発明によれば、管材を偏平部
分や皺などを生じさせないで簡便に曲げることができ、
これにより外観が奇麗で壁厚に偏りのない比較的曲率の
大きいＵ形ベンド管を安価かつ能率的に生産し得るので
ある。According to the present invention described above, the tube can be easily bent without causing a flat portion or wrinkles.
As a result, a U-shaped bend tube having a beautiful appearance and a relatively large curvature without uneven wall thickness can be produced inexpensively and efficiently.
【００２７】請求項２に記載したようにすれば、銅メッ
キが金属細線の外表面の滑りを良くするため管材からの
金属細線の抜き取りが容易に行える。According to the second aspect of the present invention, the copper plating improves the sliding of the outer surface of the thin metal wire, so that the thin metal wire can be easily extracted from the pipe material.
【００２８】請求項３に記載したようにすれば、ローラ
や押し型の案内作用により、管材の偏平化を抑制しつつ
その曲げ処理を迅速に行うことができる。According to the third aspect of the present invention, the bending operation can be rapidly performed while suppressing the flattening of the tube material by the guide action of the roller and the pressing die.
【００２９】請求項４に記載したようにすれば、複雑な
機械を必要とすることなく金属細線を管材から簡便に抜
き取ることができるのである。According to the fourth aspect, the thin metal wire can be easily extracted from the tube material without requiring a complicated machine.
【図１】本発明に係る金属細線の挿入された管材を示す
図である。FIG. 1 is a view showing a tube material into which a thin metal wire according to the present invention is inserted.
【図２】本発明に係り、プレス機及び曲げ型を使用して
管材を曲げる様子を示す説明図である。FIG. 2 is an explanatory view showing a state in which a pipe is bent using a press and a bending die according to the present invention.
【図３】本発明に係り、曲げ型と管材の関係を示す図で
ある。FIG. 3 is a diagram showing a relationship between a bending die and a pipe material according to the present invention.
【図４】本発明に係り、曲げ処理された後の管材を示す
図である。FIG. 4 is a view showing a tube material after a bending process according to the present invention.
【図５】本発明に係り、管材から金属細棒を抜き取る様
子を示す説明図である。FIG. 5 is an explanatory view showing a state in which a thin metal rod is extracted from a pipe according to the present invention.
【図６】本発明により製造されたＵ形ベンド管を示す図
である。FIG. 6 shows a U-shaped bend tube manufactured according to the present invention.
１ 管材 ２ 金属細棒 ３ プレス機 ４ 曲げ型 ５ ローラ ５ａ 案内溝 ６ 押し型 ６ａ 案内溝 ９ リング部材 ９ａ 透孔 １０ 引張部材 DESCRIPTION OF SYMBOLS 1 Tube material 2 Thin metal rod 3 Press machine 4 Bending mold 5 Roller 5a Guide groove 6 Push mold 6a Guide groove 9 Ring member 9a Through hole 10 Tensile member
Claims (4)
続いてこの管材をプレス機及び曲げ型の使用によりＵ形
に屈曲し、その後、管材を加熱して同管材から金属細棒
を抜き取るように実施することを特徴とする比較的曲率
の大きいＵ形ベンド管の製法。Claims: 1. A metal rod is densely inserted inside a tube,
Subsequently, the pipe material is bent into a U shape by using a press machine and a bending die, and then the pipe material is heated to extract a thin metal rod from the pipe material, which is a U-shape having a relatively large curvature. Bend tube manufacturing method.
して実施することを特徴とする請求項１記載の比較的曲
率の大きいＵ形ベンド管の製法。2. The method for producing a U-shaped bend pipe having a relatively large curvature according to claim 1, wherein the thin metal rod is formed by plating a steel wire with copper.
これらローラと関連した位置の縦線上をプレス機で上下
動される押し型とからなり、各ローラの周面の周方向部
位及び、押し型の円弧状先端面の円弧方向部位に前記管
材の直径に適合した円弧状断面となされた案内溝を設け
たものとした曲げ型を使用して実施することを特徴とす
る請求項１又は２記載の比較的曲率の大きいＵ形ベンド
管の製法。3. A pair of rollers for supporting a tube,
A press die which is moved up and down on a vertical line at a position related to these rollers by a press machine. 3. The method for producing a U-shaped bend pipe having a relatively large curvature according to claim 1, wherein the bending is performed using a bending die having a guide groove having an arc-shaped cross section adapted to the above.
グ部材に引張部材を固着したものとした引抜き具を使用
して実施することを特徴とする請求項１、２又は３記載
の比較的曲率の大きいＵ形ベンド管の製法。4. The comparative device according to claim 1, wherein the pulling tool is implemented by using a pull member in which a tension member is fixed to a ring member having a through hole having a specific diameter. Manufacturing method of U-shaped bend tube with large curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6340997A JP2623074B2 (en) | 1994-12-30 | 1994-12-30 | Manufacturing method of U-shaped bend tube with relatively large curvature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6340997A JP2623074B2 (en) | 1994-12-30 | 1994-12-30 | Manufacturing method of U-shaped bend tube with relatively large curvature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08187521A true JPH08187521A (en) | 1996-07-23 |
| JP2623074B2 JP2623074B2 (en) | 1997-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6340997A Expired - Lifetime JP2623074B2 (en) | 1994-12-30 | 1994-12-30 | Manufacturing method of U-shaped bend tube with relatively large curvature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2623074B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020082708A (en) * | 2001-04-25 | 2002-10-31 | 현대자동차주식회사 | Bending mold |
| JP2003062435A (en) * | 2001-08-24 | 2003-03-04 | Toray Ind Inc | Method and apparatus for manufacturing hollow fiber membrane module |
| CN102513459A (en) * | 2011-12-20 | 2012-06-27 | 渤海造船厂集团有限公司 | Dimension correcting die for openings of large-aperture U-shaped tubes |
| CN106964705A (en) * | 2017-05-25 | 2017-07-21 | 安徽江淮汽车集团股份有限公司 | Pipe beam bending mould |
| CN107511414A (en) * | 2017-08-29 | 2017-12-26 | 张家港凯航通力船用设备有限公司 | A kind of square steel bending press |
-
1994
- 1994-12-30 JP JP6340997A patent/JP2623074B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020082708A (en) * | 2001-04-25 | 2002-10-31 | 현대자동차주식회사 | Bending mold |
| JP2003062435A (en) * | 2001-08-24 | 2003-03-04 | Toray Ind Inc | Method and apparatus for manufacturing hollow fiber membrane module |
| CN102513459A (en) * | 2011-12-20 | 2012-06-27 | 渤海造船厂集团有限公司 | Dimension correcting die for openings of large-aperture U-shaped tubes |
| CN106964705A (en) * | 2017-05-25 | 2017-07-21 | 安徽江淮汽车集团股份有限公司 | Pipe beam bending mould |
| CN107511414A (en) * | 2017-08-29 | 2017-12-26 | 张家港凯航通力船用设备有限公司 | A kind of square steel bending press |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2623074B2 (en) | 1997-06-25 |
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