JP3577982B2

JP3577982B2 - Bending regulating member, auxiliary member and device of pipe bender

Info

Publication number: JP3577982B2
Application number: JP06485999A
Authority: JP
Inventors: 一男森田
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1999-03-11
Filing date: 1999-03-11
Publication date: 2004-10-20
Anticipated expiration: 2019-03-11
Also published as: JP2000263142A

Description

【０００１】
【発明の属する技術分野】
本発明は、パイプベンダーの曲げ規定部材、補助部材及び装置に関し、詳しくは、パイプを曲げ加工する場合に、パイプを押し当てている曲げ規定部材からパイプが浮き上がって、いわゆる腰折れが生じるのを確実に防止しようとする技術に係るものである。
【０００２】
【従来の技術】
従来、図１１に示すように、パイプベンダー装置において、例えば電線を挿通する電線管Ｐ１を曲げる場合に、パイプを曲げる所定角度に湾曲した溝１を形成したベンディングシュウー２ａをピボットシュウー９，９等にて固定された電線管Ｐ１に押圧して曲げ加工をおこなうのである。
【０００３】
【発明が解決しようとする課題】
ところで、曲げ規定部材２としてのベンディングシュウー２ａは扇形であり、このようなベンディングシュウー２ａを用いて電線管Ｐ１を曲げると、電線管Ｐ１がベンディングシュウー２ａから浮き上がり、腰折れが生じる場合がある。この現象はベンディングシュウー２ａが古くなって溝１が磨耗してシュウー幅が広がるにしたがって顕著になる。
【０００４】
本発明はこのような問題に鑑みてなされたものであり、パイプを曲げ加工する場合に、パイプを押し当てている曲げ規定部材からパイプが浮き上がって、腰折れが生じるのを確実に防止することができるパイプベンダーの曲げ規定部材、曲げ補助部材及び装置を提供することを課題とするものである。
【０００５】
【課題を解決するための手段】
請求項１においては、対向する上下フレーム１２、１１間に左右に間隔をへだててピボットシュー９、９を保持し、上下フレーム１２、１１間にパイプＰを曲げる所定角度に湾曲した溝１を形成した曲げ規定部材２を移動自在に保持し、曲げ規定部材２を駆動移動させてピボットシュー９、９にて受けられているパイプＰを曲げ加工するパイプベンダーにおける曲げ規定部材であって、曲げ規定部材２に対向してパイプＰを押さえてパイプＰが曲げられる際の腰折れを防止する補助部材４を曲げ規定部材２に対して一定の距離を保って取付ける取付け部５を備えていることを特徴とするものである。このような構成によれば、曲げ規定部材２に対向して補助部材４を取付け部５を介して取付けることで、補助部材４によってパイプＰが曲げ規定部材２から浮上するのを防止することができ、曲げ規定部材２の溝１にパイプＰを挿入して曲げ加工をおこなうパイプベンダー装置において、所定角度に曲げ加工ができる。
【０００６】
請求項２においては、取付け部５の幅Ｗは、パイプＰの径に対応して設定される溝１を備えた曲げ規定部材２の幅とは無関係に、一定にしていることを特徴とするものである。このような構成によれば、取付け部５の幅がパイプＰの径に応じて変更される場合においては、補助部材４も幅が異なるものを種々用意するか、あるいは、異なる取付け部５の幅に対応できる複雑な構造にしなければならないが、パイプＰの径に対応して設定される溝１を備えた曲げ規定部材２の幅とは無関係に、取付け部５の幅Ｗが一定になっていて、補助部材４を複数用意したり、複雑な構造にする必要がない。
【０００７】
請求項３においては、対向する上下フレーム１２、１１間に左右に間隔をへだててピボットシュー９、９を保持し、上下フレーム１２、１１間にパイプＰを曲げる所定角度に湾曲した溝１を形成した曲げ規定部材２を移動自在に保持し、曲げ規定部材２を駆動移動させてピボットシュー９、９にて受けられているパイプＰを曲げ加工するパイプベンダーにおける上記曲げ規定部材２に付設する補助部材４であって、曲げ規定部材２の取付け部５に取付けられる被取付け部材１０と、曲げ規定部材２と対向してパイプＰに当接する当接凹部６を形成した補助当て具３と、補助当て具３をパイプＰに当接した状態で曲げ規定部材２に対して一定の距離を保って被取付け部材１０に固定する固定手段７を備えていることを特徴とするものである。このような構成によれば、曲げ規定部材２の取付け部５に被取付け部材１０を取付け、補助当て具３を固定手段７にて被取付け部材１０に固定して曲げ規定部材２に対向させることができ、補助当て具３によってパイプＰが曲げ規定部材２から浮上するのを防止することができ、曲げ規定部材２の溝１にパイプＰを挿入して曲げ加工をおこなうパイプベンダー装置において、所定角度に曲げ加工ができる。
【０００８】
請求項４においては、当接凹部６は、その凹面の全体又は少なくとも２箇所で当接する形状にしてあることを特徴とするものである。このような構成によれば、当接凹部６の凹面の全体又は少なくとも２箇所においてパイプＰを押さえることができ、当接凹部６においてパイプＰを確実に押さえることができ、パイプＰが曲げ規定部材２から浮上するのを、一層、防止することができる。
【０００９】
請求項５においては、当接凹部６は、凹み程度を異ならせて補助当て具３の周方向に複数形成してあることを特徴とするものである。このような構成によれば、パイプＰの径の変動に容易に対処することができ、パイプＰの径が変更される度に補助当て具３を取り換えなくてよい。
【００１０】
請求項６においては、補助当て具３は、軸芯Ｘ回りに回動位置を変更可能にしていることを特徴とするものである。このような構成によれば、補助当て具３を軸芯Ｘの回りに回動させることで、パイプＰの径の変更に対処することができ、パイプＰの径の変更時の作業性を高めることができる。
【００１１】
請求項７においては、補助当て具３は、紐状体８にて固定側に連結されていることを特徴とするものである。このような構成によれば、補助当て具３の紛失を防止することができる。
【００１２】
請求項８においては、対向する上下フレーム１２、１１間に左右に間隔をへだててピボットシュー９、９を保持し、上下フレーム１２、１１間にパイプＰを曲げる所定角度に湾曲した溝１を形成した曲げ規定部材２を移動自在に保持し、曲げ規定部材２を駆動移動させてピボットシュー９、９にて受けられているパイプＰを曲げ加工するパイプベンダー装置であって、パイプＰを曲げる所定角度に湾曲した溝１を固定されたパイプＰに押し当ててパイプＰの曲げ具合を規定する曲げ規定部材２と、曲げ規定部材２に対して一定の距離を保って取付けられて曲げ規定部材２と対向する箇所においてパイプＰに当接してパイプＰの腰折れを防止する補助部材４を備えていることを特徴とするものである。このような構成によれば、補助部材４が曲げ規定部材２に対向してパイプＰが曲げ規定部材２から浮上するのを防止することができ、曲げ規定部材２の溝１にパイプＰを挿入して曲げ加工をおこなうパイプベンダー装置において、所定角度に曲げ加工ができる。
【００１３】
【発明の実施の形態】
以下、本発明の実施の形態を説明する。図１は正面図、図２は側面図、図３は補助部材を示し、同図（ａ）は側面図、同図（ｂ）は正面図、同図（ｃ）は平面図、図４は補助当て具を示し、同図（ａ）は側面図、同図（ｂ）は平面図、図９（ａ）（ｂ）（ｃ）は動作を示す斜視図である。
【００１４】
パイプベンダー装置Ａは、下フレーム１１に対して上フレーム１２がピン１７の回りに開閉自在に設けられ、上下フレーム１１，１２間に左右のピボットシュー９，９を位置変更自在に保持し、上下フレーム１１，１２間に移動自在に保持された曲げ規定部材２であるベンディングシュー２ｆを油圧シリンダー１４にて駆動移動することで例えばパイプＰである電線配管を所定の角度に曲げ加工をおこなうものである。この場合、パイプＰが曲げ規定部材２から浮上して腰折れされるのを防止するようにしている。以下、詳述する。
【００１５】
図５に示すように、曲げ規定部材２にはパイプＰを曲げる所定角度に湾曲した溝１を形成している。溝１は電線配管の呼び径（例えば、５４用の曲げ規定部材２ｂ、４２用の曲げ規定部材２ｃ、３６用の曲げ規定部材２ｄ及び２８用の曲げ規定部材２ｃ等）のものに対応する溝幅にしてあり、曲げ規定部材２は溝幅が異なる多種類のものが用意される。曲げ規定部材２に補助部材４が取付けられて曲げ規定部材２と対向する箇所においてパイプＰを押さえてパイプＰの腰折れを防止するようにしている。
【００１６】
多数の曲げ規定部材２には両側部にわたって取付け部５を形成していて、全ての曲げ規定部材２の取付け部５の幅Ｗは、パイプＰの径に対応して設定される溝１を備えた曲げ規定部材２の幅とは無関係に、一定にしている。しかして、取付け部５の幅ＷがパイプＰの径に応じて変更される場合においては、補助当て具３も幅が異なるものを種々用意するか、あるいは、異なる取付け部５の幅に対応できる複雑な構造にしなければならないが、パイプＰの径に対応して設定される溝１を備えた曲げ規定部材２の幅とは無関係に、取付け部５の幅Ｗが一定になっていて、補助部材４を複数用意したり、複雑な構造にする必要がないのである。
【００１７】
図３に示すように、補助部材４は、コ字状の被取付け部材１０と補助当て具３とハンドル１５とから構成され、被取付け部材１０を曲げ規定部材２の取付け部５に合致させ、ピン１３を被取付け部材１０及び曲げ規定部材２に貫通して取付けることができるようにしている。補助当て具３は四角形の角型材の各角面部に当接凹部６を形成したものである。当接凹部６は、呼び径が、例えば５４用、４２用、３６用及び２８用のものであり、呼び径のものに応じて表示がされている［図４（ｂ）参照］。各々の当接凹部６には押さえ凹部１６が形成されていて、被取付け部材１０にねじ込まれたハンドル１５の先端部が嵌入されて補助当て具３のパイプＰの径に応じて選択された当接凹部６をパイプＰに当接させることができるようにしている。補助当て具３をパイプＰに当接した状態で被取付け部材１０に固定する構成を固定手段７と総称するが、その構成は種々設計変更可能である。図１０は他の実施の形態を示して、補助当て具３に一つの当接凹部６を形成したものである。以下、動作を説明する。
【００１８】
曲げ規定部材２を油圧シリンダー１４の先端に取付ける。パイプＰの曲げる位置を曲げ規定部材２溝１の中央に嵌め込む。コ字状の被取付け部材１０を曲げ規定部材２の孔にピン１３を通して取付ける。補助当て具３をパイプＰに当てがって、ハンドル１５を回して補助当て具３をパイプＰに押し付ける。下フレーム１１の所定の位置にピボットシュー９，９を取付ける。上フレーム１２を閉じてピボットシュー９，９を固定する。油圧ポンプ（図示せず）を稼働させて油圧シリンダー１４のシリンダーロッドを押出してパイプＰを曲げる。所定の曲げ角度（９０度以下）に曲がれば、油圧シリンダー１４を後退させる。ハンドル１５を逆に回して補助当て具３のパイプＰへの当たりを緩める。被取付け部材１０を曲げ規定部材２から外す。パイプＰを曲げ規定部材２から外す。
【００１９】
このように、本発明の曲げ規定部材２においては、曲げ規定部材２に対向してパイプＰを押さえてパイプＰが曲げられる際の腰折れを防止する補助部材４を取着する取付け部５を備えていることによって曲げ規定部材２に対向して補助部材４を取付け部５において取付けることで、補助部材４の補助当て具３がパイプＰに押さえて曲げ規定部材２から浮上するのを防止することができ、所定角度に曲げ加工ができるのである。
【００２０】
この場合、取付け部５の幅Ｗは、パイプＰの径に対応して設定される溝１を備えた曲げ規定部材２の幅とは無関係に、一定になっていて、補助部材４を複数用意したり、複雑な構造にする必要がなくてよいものである。
【００２１】
又、本発明の補助部材４においては、曲げ規定部材２の取付け部５に取付けられる被取付け部材１０と、曲げ規定部材２と対向してパイプＰに当接する当接凹部６を形成した補助当て具３と、補助当て具３をパイプＰに当接した状態で被取付け部材１０に固定する固定手段７を備えているのであり、曲げ規定部材２の取付け部５に被取付け部材１０を取付け、補助当て具３を固定手段７にて被取付け部材１０に固定して曲げ規定部材２に対向させることで、補助当て具３によってパイプＰが曲げ規定部材２から浮上するのを防止することができ、所定角度に曲げ加工ができるものである。
【００２２】
この場合、当接凹部６は、２箇所で当接する形状にしてあって、当接凹部６の凹面の全体又は少なくとも２箇所においてパイプＰを押さえるのであり、当接凹部６においてパイプＰを確実に押さえることができ、パイプＰが曲げ規定部材２から浮上するのを、一層、防止することができるのである。具体的には、当接凹部６の角度θは、９０〜１２０度として、パイプＰの断面の９０〜１２０度あたりの２点を加圧する構造としている。因みに、曲げるパイプＰを１点で押すとパイプＰが湾曲された場合に、パイプＰが偏平になり補助当て具３とパイプＰと間に隙間ができて加圧力が０になり、隙間の分だけパイプＰが浮き上がって腰折れの原因となり、腰折れ防止の役目を果たさない。しかして、当接凹部６の角度θを９０〜１２０度の位置はパイプＰを曲げた場合でも寸法変化がほとんどなく、パイプＰの浮き上がりを確実に防止することができる。
【００２３】
更に、当接凹部６は、凹み程度を異ならせて補助当て具３の周方向に複数形成してあって、パイプＰの径の変動に容易に対処することができ、パイプＰの径が変更される度に補助当て具３を取り換えなくてよいものである。
【００２４】
しかも、補助当て具３は、そのセンターである軸芯Ｘ回りに回動位置を変更可能にしていて、補助当て具３を軸芯Ｘの回りに回動させることで、パイプＰの径の変更に対処することができ、パイプＰの径の変更時の作業性を高めることができるものである。この場合、補助当て具３は、紐状体８にて固定側であるハンドル１５に連結されていて、補助当て具３の紛失を防止することができるものである。
【００２５】
以上のように、本発明のパイプベンダー装置Ａは、パイプＰを曲げる所定角度に湾曲した溝１を固定されたパイプＰに押し当ててパイプＰの曲げ具合を規定する曲げ規定部材２と、曲げ規定部材２に取付けられて曲げ規定部材２と対向する箇所においてパイプＰに当接してパイプＰの腰折れを防止する補助部材４を備えているのであり、補助部材４が曲げ規定部材２に対向してパイプＰが曲げ規定部材２から浮上するのを防止することができ、曲げ規定部材２の溝１にパイプＰを挿入して曲げ加工をおこなうパイプベンダー装置において、所定角度に曲げ加工ができるものである。
【００２６】
【発明の効果】
請求項１においては、対向する上下フレーム間に左右に間隔をへだててピボットシューを保持し、上下フレーム間にパイプを曲げる所定角度に湾曲した溝を形成した曲げ規定部材を移動自在に保持し、曲げ規定部材を駆動移動させてピボットシューにて受けられているパイプを曲げ加工するパイプベンダーにおける曲げ規定部材であって、曲げ規定部材に対向してパイプを押さえてパイプが曲げられる際の腰折れを防止する補助部材を曲げ規定部材に対して一定の距離を保って取付ける取付け部を備えているから、曲げ規定部材に対向して補助部材を取付け部を介して取付けることで、補助部材によってパイプが曲げ規定部材から浮上するのを防止することができ、曲げ規定部材の溝にパイプを挿入して曲げ加工をおこなうパイプベンダー装置において、所定角度に曲げ加工ができるという利点がある。
【００２７】
請求項２においては、取付け部の幅は、パイプの径に対応して設定される溝を備えた曲げ規定部材の幅とは無関係に、一定にしているから、請求項１の効果に加えて、取付け部の幅がパイプの径に応じて変更される場合においては、補助部材も幅が異なるものを種々用意するか、あるいは、異なる取付け部の幅に対応できる複雑な構造にしなければならないが、パイプの径に対応して設定される溝を備えた曲げ規定部材の幅とは無関係に、取付け部の幅が一定になっていて、補助部材を複数用意したり、複雑な構造にする必要がないという利点がある。
【００２８】
請求項３においては、対向する上下フレーム間に左右に間隔をへだててピボットシューを保持し、上下フレーム間にパイプを曲げる所定角度に湾曲した溝を形成した曲げ規定部材を移動自在に保持し、曲げ規定部材を駆動移動させてピボットシューにて受けられているパイプを曲げ加工するパイプベンダーにおける上記曲げ規定部材に付設する補助部材であって、曲げ規定部材の取付け部に取付けられる被取付け部材と、曲げ規定部材と対向してパイプに当接する当接凹部を形成した補助当て具と、補助当て具をパイプに当接した状態で曲げ規定部材に対して一定の距離を保って被取付け部材に固定する固定手段を備えているから、曲げ規定部材の取付け部に被取付け部材を取付け、補助当て具を固定手段にて被取付け部材に固定して曲げ規定部材に対向させることができ、補助当て具によってパイプが曲げ規定部材から浮上するのを防止することができ、曲げ規定部材の溝にパイプを挿入して曲げ加工をおこなうパイプベンダー装置において、所定角度に曲げ加工ができるという利点がある。
【００２９】
請求項４においては、当接凹部は、その凹面の全体又は少なくとも２箇所で当接する形状にしてあるから、請求項３の効果に加えて、当接凹部の凹面の全体又は少なくとも２箇所においてパイプを押さえることができ、当接凹部においてパイプを確実に押さえることができ、パイプが曲げ規定部材から浮上するのを、一層、防止することができるという利点がある。
【００３０】
請求項５においては、当接凹部は、凹み程度を異ならせて補助当て具の周方向に複数形成してあるから、請求項３又は４記載の効果に加えて、パイプの径の変動に容易に対処することができ、パイプの径が変更される度に補助当て具を取り換えなくてよいという利点がある。
【００３１】
請求項６においては、補助当て具は、軸芯回りに回動位置を変更可能にしているから、請求項５の効果に加えて、補助当て具を軸芯の回りに回動させることで、パイプの径の変更に対処することができ、パイプの径の変更時の作業性を高めることができるという利点がある。
【００３２】
請求項７においては、補助当て具は、紐状体にて固定側に連結されているから、請求項６の効果に加えて、補助当て具の紛失を防止することができるという利点がある。
【００３３】
請求項８においては、対向する上下フレーム間に左右に間隔をへだててピボットシューを保持し、上下フレーム間にパイプを曲げる所定角度に湾曲した溝を形成した曲げ規定部材を移動自在に保持し、曲げ規定部材を駆動移動させてピボットシューにて受けられているパイプを曲げ加工するパイプベンダー装置であって、パイプを曲げる所定角度に湾曲した溝を固定されたパイプに押し当ててパイプの曲げ具合を規定する曲げ規定部材と、曲げ規定部材に対して一定の距離を保って取付けられて曲げ規定部材と対向する箇所においてパイプに当接してパイプの腰折れを防止する補助部材を備えているから、補助部材が曲げ規定部材に対向してパイプが曲げ規定部材から浮上するのを防止することができ、曲げ規定部材の溝にパイプを挿入して曲げ加工をおこなうパイプベンダー装置において、所定角度に曲げ加工ができるという利点がある。
【図面の簡単な説明】
【図１】本発明の実施の一形態を示す正面図である。
【図２】同上の側面図である。
【図３】同上の補助部材を示し、（ａ）は側面図、（ｂ）は正面図、（ｃ）は平面図である。
【図４】同上の補助当て具を示し、（ａ）は側面図、（ｂ）は平面図である。
【図５】同上のベンディングシュウーを示し、（ａ）は平面図、（ｂ）は正面図、（ｃ）は側面図、（ｄ）は底面図である。
【図６】同上の概略側面図である。
【図７】（ａ）は概略平面図、（ｂ）は概略正面図である。
【図８】（ａ）乃至（ｄ）は異なる呼び径のパイプを曲げる場合の概略側面図である。
【図９】（ａ）（ｂ）（ｃ）は同上の動作を示す斜視図、（ｄ）は呼び径の異なるベンディングシューの斜視図である。
【図１０】同上の他の実施の形態の概略側面図である。
【図１１】従来例のベンディングシュウーを示し、（ａ）は平面図、（ｂ）は正面図、（ｃ）は側面図、（ｄ）は底面図である。
【符号の説明】
１溝
２曲げ規定部材
３補助当て具
４補助部材
５取付け部
６当接凹部
７固定手段
８紐状体
Ｐパイプ
Ｗ溝幅
Ｘ軸芯[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bending regulating member, an auxiliary member, and an apparatus of a pipe bender, and more specifically, when bending a pipe, ensures that the pipe rises from the bending regulating member pressing the pipe, and that a so-called waist break occurs. This is related to the technology to be prevented.
[0002]
[Prior art]
Conventionally, as shown in FIG. 11, in a pipe bender device, for example, when bending a conduit P1 through which an electric wire is inserted, a bending shoe 2a having a groove 1 curved at a predetermined angle to bend the pipe is pivoted with a shoe 9, 9, etc. The bending is performed by pressing the conduit tube P1 fixed at.
[0003]
[Problems to be solved by the invention]
By the way, the bending shoe 2a as the bending regulating member 2 is fan-shaped, and when the conduit P1 is bent using such a bending shoe 2a, the conduit P1 may rise from the bending shoe 2a, and the hip may be broken. This phenomenon becomes more pronounced as the bending shoe 2a becomes older and the groove 1 wears out and the shoe width increases.
[0004]
The present invention has been made in view of such a problem, and when bending a pipe, it is possible to surely prevent the pipe from being lifted from the bending defining member pressing the pipe and causing a hip break. It is an object of the present invention to provide a bending regulating member, a bending assisting member, and a device for a pipe bender that can be formed.
[0005]
[Means for Solving the Problems]
In the first aspect, the pivot shoes 9, 9 are held with a space left and right between the opposed upper and lower frames 12, 11, and the groove 1 curved at a predetermined angle for bending the pipe P is formed between the upper and lower frames 12, 11. A bending bender in a pipe bender for bending the pipe P received by the pivot shoes 9, 9 by movably holding the bent bending baffle 2 and drivingly moving the bending brace 2; It is characterized in that it has a mounting portion 5 for mounting the auxiliary member 4 for holding the pipe P opposite to the member 2 and preventing a break when the pipe P is bent, while maintaining a fixed distance to the bending defining member 2. It is assumed that. According to such a configuration, the auxiliary member 4 is attached to the bending defining member 2 via the attaching portion 5 so as to prevent the pipe P from floating from the bending defining member 2 by the auxiliary member 4. The bending can be performed at a predetermined angle in a pipe bender device that performs bending by inserting the pipe P into the groove 1 of the bending defining member 2.
[0006]
According to a second aspect of the present invention, the width W of the mounting portion 5 is constant irrespective of the width of the bending defining member 2 having the groove 1 set corresponding to the diameter of the pipe P. Things. According to such a configuration, when the width of the mounting portion 5 is changed according to the diameter of the pipe P, the auxiliary member 4 may be prepared with various widths, or the width of the mounting portion 5 may be different. However, the width W of the mounting portion 5 is constant irrespective of the width of the bending defining member 2 having the groove 1 set in accordance with the diameter of the pipe P. Therefore, there is no need to prepare a plurality of auxiliary members 4 or make the structure complicated.
[0007]
According to the third aspect, the pivot shoes 9, 9 are held between the opposed upper and lower frames 12, 11 with an interval left and right, and a groove 1 curved at a predetermined angle for bending the pipe P is formed between the upper and lower frames 12, 11. The bending brace member 2 is movably held, and the bending brace member 2 is driven to move to bend the pipe P received by the pivot shoes 9, 9. A member 4 to be attached to the attachment portion 5 of the bending defining member 2, an auxiliary abutment 3 having a contact concave portion 6 which is opposed to the bending defining member 2 and abuts on the pipe P; A fixing means 7 is provided for fixing the abutment 3 to the attached member 10 while keeping a certain distance from the bending defining member 2 in a state in which the abutment 3 is in contact with the pipe P. According to such a configuration, the mounting member 10 is attached to the mounting portion 5 of the bending defining member 2, and the auxiliary patch 3 is fixed to the mounting member 10 by the fixing means 7 to face the bending defining member 2. The pipe P can be prevented from floating from the bending defining member 2 by the auxiliary applicator 3, and the pipe P is inserted into the groove 1 of the bending defining member 2 to perform a bending process. Can be bent to an angle.
[0008]
According to a fourth aspect of the present invention, the contact recess 6 has a shape that contacts the entire concave surface or at least two locations. According to such a configuration, the pipe P can be pressed on the entire concave surface of the contact recess 6 or at least two places, and the pipe P can be reliably pressed in the contact recess 6, and the pipe P is bent. 2 can be further prevented from rising.
[0009]
According to a fifth aspect of the present invention, a plurality of contact recesses 6 are formed in the circumferential direction of the auxiliary patch 3 with different degrees of recess. According to such a configuration, it is possible to easily cope with a change in the diameter of the pipe P, and it is not necessary to replace the auxiliary patch 3 every time the diameter of the pipe P is changed.
[0010]
According to a sixth aspect of the present invention, the auxiliary abutment 3 is capable of changing its rotational position about the axis X. According to such a configuration, by rotating the auxiliary applicator 3 about the axis X, it is possible to cope with a change in the diameter of the pipe P, and to improve the workability when the diameter of the pipe P is changed. be able to.
[0011]
According to a seventh aspect, the auxiliary patch 3 is connected to the fixed side by a string-shaped body 8. According to such a configuration, loss of the auxiliary patch 3 can be prevented.
[0012]
In the eighth aspect, the pivot shoes 9, 9 are held between the opposing upper and lower frames 12, 11 with an interval left and right, and the groove 1 curved at a predetermined angle for bending the pipe P is formed between the upper and lower frames 12, 11. A pipe bender device which movably holds the bent bending member 2 and drives and moves the bending member 2 to bend the pipe P received by the pivot shoes 9, 9. A bending defining member 2 for pressing a groove 1 curved at an angle against a fixed pipe P to define a bending degree of the pipe P, and a bending defining member 2 attached to the bending defining member 2 with a predetermined distance therebetween. And an auxiliary member 4 for abutting against the pipe P at a position facing the pipe P to prevent the pipe P from breaking. According to such a configuration, it is possible to prevent the pipe P from floating from the bending defining member 2 with the auxiliary member 4 facing the bending defining member 2, and insert the pipe P into the groove 1 of the bending defining member 2. In a pipe bender device that performs a bending process, a bending process can be performed at a predetermined angle.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described. 1 is a front view, FIG. 2 is a side view, and FIG. 3 shows an auxiliary member. FIG. 1 (a) is a side view, FIG. 1 (b) is a front view, FIG. 9A is a side view, FIG. 9B is a plan view, and FIGS. 9A, 9B, and 9C are perspective views showing operations.
[0014]
In a pipe bender device A, an upper frame 12 is provided to be openable and closable around a pin 17 with respect to a lower frame 11, and left and right pivot shoes 9, 9 are held between upper and lower frames 11, 12 so as to be changeable in position. A bending cylinder 2f, which is a bending defining member 2 movably held between the frames 11 and 12, is driven and moved by a hydraulic cylinder 14 to bend an electric wire pipe such as a pipe P to a predetermined angle. is there. In this case, the pipe P is prevented from rising from the bending defining member 2 and being bent. The details will be described below.
[0015]
As shown in FIG. 5, a groove 1 curved at a predetermined angle for bending the pipe P is formed in the bending defining member 2. The groove 1 is a groove corresponding to the nominal diameter of the electric wire pipe (for example, the bending defining member 2b for 54, the bending defining member 2c for 42, the bending defining member 2d for 36, the bending defining member 2c for 28, etc.). The bending defining member 2 is prepared in various types having different groove widths. The auxiliary member 4 is attached to the bending defining member 2 and presses the pipe P at a position facing the bending defining member 2 to prevent the pipe P from breaking.
[0016]
The mounting portions 5 are formed on both sides of the plurality of bending defining members 2, and the widths W of the mounting portions 5 of all the bending defining members 2 are provided with grooves 1 set corresponding to the diameter of the pipe P. Irrespective of the width of the bending defining member 2, it is constant. In the case where the width W of the mounting portion 5 is changed in accordance with the diameter of the pipe P, the auxiliary abutment 3 may be prepared with various widths or may be adapted to different widths of the mounting portion 5. Although the structure must be complicated, the width W of the mounting portion 5 is constant irrespective of the width of the bending defining member 2 having the groove 1 set corresponding to the diameter of the pipe P, There is no need to prepare a plurality of members 4 or to make the structure complicated.
[0017]
As shown in FIG. 3, the auxiliary member 4 includes a U-shaped attached member 10, an auxiliary patch 3, and a handle 15. The attached member 10 matches the attachment portion 5 of the bending defining member 2. The pin 13 can be attached to the attached member 10 and the bending defining member 2 by penetrating it. The auxiliary patch 3 is formed by forming a contact concave portion 6 on each square surface of a square rectangular member. The contact recesses 6 have a nominal diameter of, for example, 54, 42, 36, and 28, and are displayed according to the nominal diameter [see FIG. 4B]. A holding recess 16 is formed in each of the contact recesses 6, and the tip of a handle 15 screwed into the attached member 10 is fitted into the holding recess 16, and the contact is selected according to the diameter of the pipe P of the auxiliary patch 3. The contact recess 6 can be brought into contact with the pipe P. A configuration in which the auxiliary abutment 3 is fixed to the attached member 10 in a state in which the auxiliary abutment 3 is in contact with the pipe P is generically referred to as a fixing means 7, but the configuration can be variously changed. FIG. 10 shows another embodiment, in which one contact recess 6 is formed in the auxiliary patch 3. Hereinafter, the operation will be described.
[0018]
The bending regulating member 2 is attached to the tip of the hydraulic cylinder 14. The bending position of the pipe P is fitted into the center of the groove 1 of the bending defining member 2. The U-shaped attachment member 10 is attached to the hole of the bending defining member 2 through the pin 13. The auxiliary patch 3 is applied to the pipe P, and the handle 15 is turned to press the auxiliary patch 3 against the pipe P. The pivot shoes 9, 9 are attached to predetermined positions of the lower frame 11. The upper frame 12 is closed and the pivot shoes 9, 9 are fixed. The hydraulic pump (not shown) is operated to push out the cylinder rod of the hydraulic cylinder 14 to bend the pipe P. When the hydraulic cylinder 14 is bent at a predetermined bending angle (90 degrees or less), the hydraulic cylinder 14 is retracted. By turning the handle 15 in the reverse direction, the contact of the auxiliary patch 3 with the pipe P is loosened. The attached member 10 is removed from the bending defining member 2. Remove the pipe P from the bending defining member 2.
[0019]
As described above, the bending defining member 2 of the present invention includes the attaching portion 5 for attaching the auxiliary member 4 for preventing the hip P from bending when the pipe P is bent by pressing the pipe P facing the bending defining member 2. As a result, the auxiliary member 4 is attached to the attachment portion 5 so as to face the bending defining member 2, thereby preventing the auxiliary patch 3 of the auxiliary member 4 from rising up from the bending defining member 2 by pressing the pipe against the pipe P. And bend at a predetermined angle.
[0020]
In this case, the width W of the mounting portion 5 is constant irrespective of the width of the bending defining member 2 having the groove 1 set corresponding to the diameter of the pipe P, and a plurality of auxiliary members 4 are prepared. Or a complicated structure.
[0021]
In addition, in the auxiliary member 4 of the present invention, the attached member 10 attached to the attachment portion 5 of the bending defining member 2 and the auxiliary contact 6 formed with the contact concave portion 6 which is opposed to the bending defining member 2 and abuts on the pipe P. The fixture 3 and the fixing means 7 for fixing the auxiliary patch 3 to the attachment member 10 in contact with the pipe P are provided. The attachment member 10 is attached to the attachment portion 5 of the bending defining member 2. By fixing the auxiliary patch 3 to the attached member 10 by the fixing means 7 and facing the bending defining member 2, it is possible to prevent the pipe P from floating from the bending defining member 2 by the auxiliary patch 3. Can be bent at a predetermined angle.
[0022]
In this case, the contact recess 6 is shaped to contact at two places, and the pipe P is pressed on the entire concave surface of the contact recess 6 or at least two places. Thus, the pipe P can be further prevented from floating from the bending defining member 2. Specifically, the angle θ of the contact recess 6 is set to 90 to 120 degrees, and two points per 90 to 120 degrees of the cross section of the pipe P are pressed. By the way, when the pipe P to be bent is pushed at one point, and the pipe P is bent, the pipe P becomes flat and a gap is formed between the auxiliary patch 3 and the pipe P, and the pressing force becomes zero, and the amount of the gap is reduced. Only the pipe P rises up, causing a break in the waist, and does not play the role of preventing the break in the waist. Thus, when the angle .theta. Of the contact recess 6 is 90 to 120 degrees, there is almost no dimensional change even when the pipe P is bent, and the floating of the pipe P can be reliably prevented.
[0023]
Further, a plurality of the contact recesses 6 are formed in the circumferential direction of the auxiliary patch 3 with different degrees of recess, so that it is possible to easily cope with a change in the diameter of the pipe P, and the diameter of the pipe P is changed. It is not necessary to replace the auxiliary patch 3 each time it is performed.
[0024]
In addition, the rotation position of the auxiliary patch 3 around the axis X which is the center thereof can be changed. By rotating the auxiliary patch 3 around the axis X, the diameter of the pipe P can be changed. And the workability when the diameter of the pipe P is changed can be improved. In this case, the auxiliary applicator 3 is connected to the handle 15 on the fixed side by the string-shaped body 8 and can prevent the auxiliary applier 3 from being lost.
[0025]
As described above, the pipe bender device A according to the present invention includes the bending defining member 2 that presses the groove 1 curved at a predetermined angle for bending the pipe P against the fixed pipe P to define the bending degree of the pipe P, An auxiliary member 4 is attached to the defining member 2 and abuts on the pipe P at a location facing the bending defining member 2 to prevent the pipe P from breaking. The auxiliary member 4 faces the bending defining member 2. A pipe bender that inserts the pipe P into the groove 1 of the bending defining member 2 to perform bending by inserting the pipe P into the groove 1 of the bending defining member 2. It is.
[0026]
【The invention's effect】
In claim 1, a pivot shoe is held with a space left and right between opposed upper and lower frames, and a bending defining member having a groove curved at a predetermined angle for bending a pipe between the upper and lower frames is movably held, A bending member in a pipe bender that drives and bends a bending member to bend a pipe received by a pivot shoe, and suppresses hip break when the pipe is bent by pressing the pipe against the bending member. Since the mounting part for attaching the auxiliary member for preventing the bending member to the bending defining member at a fixed distance is provided, by attaching the auxiliary member to the bending defining member via the mounting part, the pipe is formed by the auxiliary member. A pipe bender device that can prevent floating from the bending member and inserts a pipe into the groove of the bending member to perform bending. In, there is an advantage in that it is bent at a predetermined angle.
[0027]
According to the second aspect, the width of the attachment portion is constant irrespective of the width of the bending defining member having the groove set corresponding to the diameter of the pipe. In the case where the width of the mounting portion is changed according to the diameter of the pipe, it is necessary to prepare various auxiliary members having different widths, or to use a complicated structure capable of accommodating different widths of the mounting portion. , Regardless of the width of the bending member with grooves set according to the diameter of the pipe, the width of the mounting part is constant, it is necessary to prepare a plurality of auxiliary members or make the structure complicated There is no advantage.
[0028]
In claim 3, a pivot shoe is held between the opposing upper and lower frames with an interval left and right, and a bending regulating member having a groove curved at a predetermined angle for bending a pipe between the upper and lower frames is movably held, An auxiliary member attached to the bending member in the pipe bender for bending the pipe received by the pivot shoe by driving the bending member so as to be attached to the mounting portion of the bending member; An auxiliary patch having a contact recess formed in contact with the pipe in opposition to the bending regulating member, and a fixed distance to the bending regulating member in a state where the auxiliary patch is in contact with the pipe to the attached member. Since fixing means for fixing is provided, the member to be mounted is attached to the mounting portion of the bending defining member, and the auxiliary patch is fixed to the member to be mounted by the fixing means, and the bending rule The pipe can be opposed to the member, the pipe can be prevented from floating from the bending member by the auxiliary patch, and the pipe can be bent by inserting the pipe into the groove of the bending member to perform the bending. There is an advantage that bending can be performed.
[0029]
According to claim 4, the contact recess is formed in such a shape that it abuts on the entire concave surface or at least two places. Therefore, in addition to the effect of claim 3, pipes are provided on the entire concave surface of the contact recess or at least two places. And the pipe can be reliably pressed in the contact concave portion, and the pipe can be further prevented from floating from the bending defining member.
[0030]
In the fifth aspect, a plurality of contact recesses are formed in the circumferential direction of the auxiliary patch with different degrees of depression, so that in addition to the effect of the third or fourth aspect, it is easy to change the diameter of the pipe. And there is an advantage that it is not necessary to replace the auxiliary patch every time the diameter of the pipe is changed.
[0031]
According to claim 6, since the auxiliary patch can change the rotation position about the axis, in addition to the effect of claim 5, by rotating the auxiliary patch about the axis, There is an advantage that it is possible to cope with a change in the diameter of the pipe, and it is possible to enhance workability when changing the diameter of the pipe.
[0032]
According to the seventh aspect, since the auxiliary patch is connected to the fixed side by the cord-like body, in addition to the effect of the sixth aspect, there is an advantage that the auxiliary patch can be prevented from being lost.
[0033]
In claim 8, a pivot shoe is held between the opposing upper and lower frames with an interval left and right, and a bending regulating member having a groove curved at a predetermined angle for bending a pipe between the upper and lower frames is movably held, A pipe bender apparatus for bending a pipe received by a pivot shoe by driving and moving a bending regulating member, wherein a groove bent at a predetermined angle for bending the pipe is pressed against a fixed pipe to bend the pipe. Since a bending defining member that defines the following is provided, an auxiliary member that is attached to the bending defining member at a fixed distance and that abuts on the pipe at a position opposed to the bending defining member to prevent the pipe from breaking down is provided. The auxiliary member can prevent the pipe from rising from the bending defining member in opposition to the bending defining member, and insert the pipe into the groove of the bending defining member. In tube bending apparatus for performing the down processing, there is the advantage that it is bent at a predetermined angle.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention.
FIG. 2 is a side view of the same.
3A and 3B show the auxiliary member of the above, wherein FIG. 3A is a side view, FIG. 3B is a front view, and FIG. 3C is a plan view.
FIGS. 4A and 4B show the auxiliary patch according to the first embodiment, wherein FIG. 4A is a side view and FIG.
5A and 5B show the bending shoe of the above, wherein FIG. 5A is a plan view, FIG. 5B is a front view, FIG. 5C is a side view, and FIG.
FIG. 6 is a schematic side view of the same.
7A is a schematic plan view, and FIG. 7B is a schematic front view.
8 (a) to 8 (d) are schematic side views when bending pipes having different nominal diameters.
9 (a), 9 (b) and 9 (c) are perspective views showing the same operation, and FIG. 9 (d) is a perspective view of bending shoes having different nominal diameters.
FIG. 10 is a schematic side view of another embodiment of the above.
11 (a) is a plan view, FIG. 11 (b) is a front view, FIG. 11 (c) is a side view, and FIG. 11 (d) is a bottom view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Groove 2 Bending regulating member 3 Auxiliary applicator 4 Auxiliary member 5 Attaching section 6 Contact recess 7 Fixing means 8 String P pipe W Groove width X Axis

Claims

A pivot shoe is held between the opposing upper and lower frames with a gap left and right, a bending regulating member having a groove curved at a predetermined angle for bending a pipe between the upper and lower frames is movably held, and the bending regulating member is driven and moved. A bending member in a pipe bender for bending a pipe received by a pivot shoe , and bending an auxiliary member that prevents the pipe from bending when the pipe is bent by pressing the pipe against the bending member. A bending member for a pipe bender, comprising: a mounting portion that is mounted at a predetermined distance from the specifying member.

2. The bending member according to claim 1, wherein the width of the attachment portion is set to correspond to the diameter of the pipe and is constant irrespective of the width of the bending member having the groove.

A pivot shoe is held between the opposing upper and lower frames with a gap left and right, a bending regulating member having a groove curved at a predetermined angle for bending a pipe between the upper and lower frames is movably held, and the bending regulating member is driven and moved. An auxiliary member attached to the bending defining member of the pipe bender for bending a pipe received by the pivot shoe, the member being attached to the mounting portion of the bending defining member; And a fixing means for fixing the auxiliary patch to a member to be attached while keeping the auxiliary patch at a fixed distance with respect to the bending member in a state in which the auxiliary patch is in contact with the pipe. An auxiliary member for a pipe bender, comprising:

The auxiliary member for a pipe bender according to claim 3, wherein the contact concave portion has a shape in which the concave portion is in contact with the entire concave surface or at least two positions.

5. The auxiliary member for a pipe bender according to claim 3, wherein a plurality of contact concave portions are formed in the circumferential direction of the auxiliary patch with different degrees of depression.

The auxiliary member for a pipe bender according to claim 5, wherein the auxiliary abutment is configured to be capable of changing a rotation position around the axis.

7. The auxiliary member for a pipe bender according to claim 6, wherein the auxiliary abutment is connected to the fixed side by a cord-like body.

A pivot shoe is held between the opposing upper and lower frames with a gap left and right, a bending regulating member having a groove curved at a predetermined angle for bending a pipe between the upper and lower frames is movably held, and the bending regulating member is driven and moved. A pipe bender device for bending a pipe received by a pivot shoe to press a groove curved at a predetermined angle to bend the pipe against a fixed pipe to define a bending degree of the pipe. A pipe bender device, comprising: an auxiliary member that is attached to the bending defining member at a fixed distance and that abuts on the pipe at a position facing the bending defining member to prevent the pipe from breaking. .