JP4097252B2

JP4097252B2 - Tube connecting method, tube attaching / detaching device, and fluid discharge device

Info

Publication number: JP4097252B2
Application number: JP2002275613A
Authority: JP
Inventors: 勝廣風間
Original assignee: 株式会社カザマ技研開発
Priority date: 2002-09-20
Filing date: 2002-09-20
Publication date: 2008-06-11
Anticipated expiration: 2022-09-20
Also published as: JP2004106151A

Description

【０００１】
【発明の属する技術分野】
本発明は、チューブ体、パイプ部材などの管状体製品を、他の部品や装置などに接続する技術にかかり、より詳細には、ビニル管などの比較的軟質なチューブ管と、金属・樹脂などの硬質で変形し難い材料からなる接続用部材を備える装置において、チューブ管と接続用部材とを効率的で確実に接続または離脱させる方法、およびそれに関連する装置に関するものである。
【０００２】
【従来の技術】
従来の技術に関係する特許文献としての例を挙げれば、特開2000-140717「二液混合式携帯用スプレーガン」、特開平7-247604「噴射による発泡ウレタンの施工方法及びその装置」、特開平7-232107「エアゾール組成物用の多液混合噴出装置」、特開平7-16504「スプレーガンおよび外部混合式２液塗装装置」がある。これらの発明は何れも、ノズルなどの先端開口部（噴出口）から、ウレタンなどの流体を噴出させるためのスプレー装置である。
【０００３】
本発明に関連する製品で、先の特許文献にも示されているものでは、発泡ウレタン吹き付け工具などのようなスプレー式吹き付け装置がある。この装置では、作業性や操作性の向上などのために、流体の吹出口となる先端開口部（噴出ノズル）に、延長接続用のビニル管など別の付属品をさらに取り付け、これらを連続一体的にして用いられる場合がよくある。
【０００４】
ところが、装置の流体吹出口(金属製)に、管状体(ビニル製)など別途付属品を取り付けることが、施工現場の状況などを考慮すると、容易にできないことが多くある。このような接続されるビニル管は、作業中に外れる危険がないように、嵌ると抜け出しにくいように、あまり柔らか過ぎることなくそれほど硬過ぎない軟質材が用いられ、寸法的にもしっかり嵌め合うようなものが用いられている。そのため、作業者が手動で嵌め合わせるのが難しく、嵌め合わせたとしても奥まで挿入されていない場合は、極めて脱落しやくなって危険である。また、しっかり挿入されて嵌め込まれたときには、こんどは外せなくなる心配がある。
【０００５】
【発明が解決しようとする課題】
本発明は、吹き付け装置の流体吹出口に、ビニル管など別途付属品を取り付けするにあたり、現状よく用いられているこの分野の装置や方法を、大きく発展改良させることに鑑みてなされたものであり、これら連結付属品の取り付け／取り外し作業を、より簡単で確実で個人差なく実施できる新規の接合技術を備える方法および関連装置を提供することを目的とする。
より具体的には、本発明は、例えば発泡ウレタンなどの吹き付け装置（スプレーガン）の先端に設けられた金属性の噴出ノズル部などに、ビニル管など接続管からなるチューブ体を取り付けたり取り外したりする接合／離脱技術において、より快適で使い易く安全におこなえる技術を提供することを目的とする。
【０００６】
【課題を解決するための手段】
前記課題を解決し、所望の目的を達成するために、本発明による管体接続方法、管体接続分離方法、管体着脱用装置および流体吐出装置は、つぎのようにして構成される。なお、ここで付された符号は、図面１(ａ)〜(ｄ)に付されたそれに一致する。
【０００７】
（１）チューブ体１０と連結体２０とを接続する管体接続方法であって、
チューブ体１０は、開口端部１１を有する外径Ｄ１内径ｄ１の円筒管であって、径拡大方向に膨張または変形が可能な材料からなり、
連結体２０は、変形しない材料からなる細長円柱形状の挿着部２１を備え、
この挿着部２１は外径Ｄ２を有し、チューブ体１０の内径ｄ１より大きく設定され、接続側にはチューブ体１０の開口端部１１との密着を可能とする挿着部端部２２を備え、さらに、内部を挿通して挿着部端部２０に通じる導通路２３を有しており、
チューブ体開口端部１１と挿着部端部２２とを密着させた状態で、チューブ体１０の所定箇所１２を閉塞させて、チューブ体１０の接続側内部の所定領域１３を気密状態とし、そこに導通路２３を経由して加圧気体を導入することによって、チューブ体開口端部１１と挿着部端部２２との密着を解除させ、そのとき、チューブ体１０または挿着部２１を図面左右方向に移動させて近づけ、チューブ体１０内に挿着部２１を挿着させて両者を接続する、管体接続方法とした。なお、ここでの加圧気体（圧縮空気など）の導入は、潤滑剤的な役割を果たして、両者の密着解除と、両者間の挿着(挿入)を極めて効率良くおこなうことができる。
【０００８】
（２）(１)の管体接続方法において、
チューブ体１０の径方向への変形や座屈を含むなんらかの動作を、拘束または制限するために、チューブ体１０の径方向外側に円筒状部材３０が配置設定される。この円筒状部材３０は、チューブ体の変形防止用ガイドとしての役割をする。またこのとき、チューブ体１０内に挿着部２１が挿着された後のチューブ体１０の外径をＤ１'とすれば、挿着部２１にかかわる位置における円筒状ガイド部３０の内径φは、Ｄ１'≦ φ として設定されるとよい。
【０００９】
（３）(１)または(２)の管体接続方法において、
チューブ体１０を気密にするには、チューブ体１０の外側よりチューブ体１０の所望部位１２を押圧変形（押圧部材４１による）させることにより、その部位１２を閉塞させる。
【００１０】
（４）(１)〜(３)のいずれかの管体接続方法によって接続された、チューブ体１０と連結体（挿着部２１）とを、互いに離脱(分離)させるための管体接続分離方法であって、
連結体２１が挿着されていないチューブ体１０の所定箇所１２'を閉塞させ、その所定箇所１２'と連結体２１とで形成されるチューブ体１０内の所定領域１５を気密状態とし、そこに導通路２３を経由して加圧気体を導入することによって、チューブ体１０と連結体２１との間を通気させて密着を解除させ、そのときチューブ体１０または連結体２１を移動させて両者を分離させる、ことを特徴とする管体接続分離方法とした。
【００１１】
（５）装置が備える突出型接続部２０にチューブ体１０を被着させるか、突出型接続部２０に既に被着されたチューブ体１０'を離脱させるか、するための管体着脱用装置４０であって、
チューブ体１０は、開口端部１１を有する外径Ｄ１内径ｄ１の円筒管であって、径拡大方向に膨張または変形が可能な材料からなり、
突出型接続部２０は、変形しない材料からなる細長円柱形状の突出管部２１を備え、
この突出管部２１は、その外径Ｄ２がチューブ体１０の内径ｄ１より大きく設定され、接続側にはチューブ体１０の開口端部１１との密着を可能とする管端部２２を備え、さらに、内部を挿通して管端部２２に通じる導通路２３を有し、
チューブ体１０開口端部１１と管端部２２とを密着させた状態、または突出管部２１外面にチューブ体１０’内面が既に被着されて密着された状態、のいずれかの状態において、チューブ体１０をチューブ体１０の所定箇所１２を外から押圧して閉塞させて、チューブ体１０の接続側内部の所定領域１３を気密状態とするチューブ体気密手段と、
気密状態の所定領域１３に導通路２３を経由して加圧気体を導入する加圧気体導入手段と、
チューブ体１０開口端部１１と管端部２２との密着状態、または突出管部２１外面とチューブ体１０’内面との密着状態のいずれかの状態が、加圧気体導入によって解除されたとき、チューブ体１０’または突出管部２１を移動させる移動手段と、を備え、
チューブ体１０の被着または離脱を行うよう装置構成される管体着脱用装置４０とした。
【００１２】
（６）(５)の管体着脱用装置において、
この装置は、チューブ体（１０、１０'）の径方向への変形または動作を制限するために、チューブ体（１０、１０'）の径方向の外側に配置された円筒状ガイド部３０を備える。
【００１３】
（７）流体を吐出するための流体吐出装置であって、
この装置は、流体吐出部２０とこれに被着接続されるチューブ体１０を備え、チューブ体１０は、開口端部１１を有する外径Ｄ１内径ｄ１の円筒管であって、径拡大方向に膨張または変形が可能な材料からなり、
流体吐出部２１は、変形しない材料からなる細長円柱形状の突出管部２２を備え、
この突出管部２２は、外径Ｄ２がチューブ体の内径ｄ１より大きく設定され、接続側にはチューブ体１０の開口端部１１との密着を可能とする管端部２２を備え、さらに、内部を挿通して管端部２２に通じる導通路２３を有し、
チューブ体１０開口端部１１と管端部２２との密着状態、または突出管部２１外面とチューブ体１０’内面との密着状態のいずれかの状態で、チューブ体１０の所定箇所（１２または１２'）を外から押圧して閉塞されて、チューブ体１０の接続側内部の所定領域（１３または１５）が気密状態とされる手段を備え、
この気密状態の所定領域（１３または１５）に導通路２３を経由して加圧気体が導入され、加圧気体導入によって前記いずれかの密着状態が解除されたとき、チューブ体（１０、１０'）または突出管部２１が移動され、チューブ体の被着または離脱を行うよう装置構成される、流体吐出装置とした。
【００１４】
【発明の実施の形態】
次に、図１および図２を参照して、本発明による実施の形態について詳細に説明する。ここでの図１は、本発明により構成された装置の主要部を断面によって示した構造説明図であり、また図２は、本発明の一実施の形態として発泡ウレタン噴出装置を示した図である。
図１における装置では、主要な構成部材として、接続用のチューブ体１０と、これに連結接続される挿着部２１を備える連結体２０と、また、管体着脱用装置４０とを含む。この管体着脱用装置４０は、チューブ体１０の接続または取り外しに用いられる付属の装置であって、チューブ体１０と一体的に構成されて連動する動作が可能である。そして、この管体着脱用装置４０は、チューブ体１０の径方向への変形や動作を、拘束または制限するために、チューブ体１０の径方向の外側に円筒状部材３０を備える。
【００１５】
これらの図１のうち、図１(ａ)は、チューブ体１０と連結体２０とが挿着接続される前の状況を、図１(ｂ)は、チューブ体１０の所定箇所１２が押圧されて閉塞された状況を、それぞれ示す。また、図１(ｃ)は、チューブ体１０内に連結体２０の挿着部２１が挿入されて接続がなされた後の状況であり、チューブ体１０と連結体２０とはより近づいた位置に移動されている。そして、図１(ｄ)は、図１(ｃ)に続いて所定箇所１２の押圧が解除されて、チューブ体１０の形状が元に戻された状況を示す。
【００１６】
まず、図１(ａ)に示されるように、接続されるチューブ体１０は、開口端部１１を有する外径Ｄ１で内径ｄ１の円筒管であって、径拡大方向に膨張または変形が可能なビニル樹脂などのような軟質な材料が使用される。
チューブ体１０と連結接続される連結体２０は、金属のような変形しない材料からなる細長円柱形状の挿着部２１を備えており、この挿着部２１がチューブ体１０に挿着されて接続がなされる。この挿着部２１は、その外径Ｄ２が、チューブ体１０の内径ｄ１より大きく設定されていて、その挿着部端部２２はここではテーパー面を有する円錐台形状となっている。接続される前には、挿着部２１端部はチューブ体１０の内に挿入されることはないので、チューブ体１０の開口端部１１との挿着部端部２２とは当接するのみであり、ここでは当接される面同士（ここでは線円形）の密着が可能である。このとき、連結接続されるチューブ体１０と挿着部２１とがより密着する方向に、力を加えておくとよい。
【００１７】
そして、これらの構成で肝要なことは、連結体２０の挿着部２１は、その内部中心を挿通して挿着部端部２０に通じる導通路２３を有する構造を有する点であり、この導通路２３を通して、装置内部またはその外部から気体／液体などの流体を導入することができる。よって、チューブ体１０開口端部１１と挿着部２１端部２２との当接／密着を行うことによって、この導通路２３を通して、チューブ体１０内部にも流体が導入できる。
【００１８】
図１(ｂ)において、チューブ体開口端部１１と挿着部端部２２とを、例えば左方向または右方向から押圧させるなどの手段により、両者の密着させた状態に保持する。ここでは、管体着脱用装置４０によって、チューブ体１０を保持させる構成として、チューブ体１０に連動するような動作をさせることが可能である。次に、チューブ体１０の所定箇所として、この図１では１２に示す箇所を選択し、そこを閉塞させる。所定箇所を閉塞させる手段としては、管体着脱用装置４０が具備する押圧手段を用いることとし、具体的構成としては、押圧部材４１を下方からピストン駆動させる等の手段により、チューブ体１０の所定箇所１２を外側から押圧する。
【００１９】
図１(ｂ)では、チューブ体１０は所定箇所１２が押圧されて閉塞され、接続側内部の所定領域１３は気密状態となる。その状態のまま、ここに導通路２３を経由して加圧気体を導入することによって、チューブ体開口端部１１と挿着部端部２２との密着を解除させる。密着の解除は、密着されていた円形線状形状の当接箇所の一部であっても全域であってもよいが、加圧気体の導入が潤滑剤的な役割を果たすことにより、加圧気体の導入チューブ体自体が図１左方向へ移動し易くなる、ことが実現される。密着が解除されたタイミングで、チューブ体１０または挿着部２１を接続する方向にすばやく移動させて、チューブ体１０内に挿着部２１を挿着させて両者を一体結合させる。両者の相対移動のためには、管体着脱用装置４０を、チューブ体１０と一体的に連動する構成とすることが可能で、チューブ体１０を保持した管体着脱用装置４０を図面左方向へ移動させればよい。
【００２０】
図１(ｃ)は、チューブ体１０と連結体２０とがより近づけられた移動後の状況を示し、チューブ体１０内に連結体２０の挿着部２１が挿入され、チューブ体１０を被着されて接続が終了した状況である。この図１(ｃ)では、押圧部材４１は、所定位置１２’において下方から上方にチューブ体１０を押圧していて閉鎖状態のままとなっている。そこで、つぎの図１(ｄ)においては、両者(２体)の接続が済んだら、今度は押圧部材４１を上方位置から元の位置に下げて、チューブ体１０内部を開放する必要があり、その状態を示している。チューブ体１０は弾力性があるので元のストレートな円管形状に戻る。
【００２１】
また、管体着脱用装置４０は円筒状部材３０を備えており、この円筒状部材３０(円筒状ガイド部)は、円筒形のチューブ体１０の外面を、接続側全面に渡って同心拡大径的に被う構成となっている。チューブ体１０と円筒状部材３０との配置関係は、図面左右方向にチューブ体１０が移動したときにも、同じ位置関係が維持されており、管体着脱用装置４０・円筒状部材３０・チューブ体１０は一体的に構成され、連動する動作を行う。
この円筒状部材３０の内径は、接続前のチューブ体１０の外径よりやや大きく設定がなされており、チューブ体１０の径方向への変形や座屈などを含むなんらかの動作を、拘束または制限することができる。そして、チューブ体１０内に挿着部２１が挿着された後の状態での拡大されたチューブ体１０の外径をＤ１'とすれば、挿着部にかかわる位置における円筒状部材３０の内径φは、Ｄ１'≦ φとして設定されるのがよい。
【００２２】
図１(ｄ)は、チューブ体１０内に連結体２０の挿着部２１が挿入され、チューブ体１０が被着されて接続が終了した後の状況を示しているが、つぎに、図１(ｄ)と(ｃ)とを用いて、挿着部２１からチューブ体１０を取り外す（離脱させる）ことについて、説明する。
図１(ｄ)のとおり、チューブ体１０の内面１０''と挿着部の外面２１'とは、密着した状態となっているので、チューブ体１０の所定箇所１２'を、前と同様にして外から押圧して閉塞させ、図１(ｃ)の状況に戻すと、チューブ体１０の接続側内部の所定領域１５は気密状態になる。そこで、この所定領域１５に導通路２３を経由して加圧気体を導入すると、チューブ体１０の内面１０''と挿着部２１の外面２１'との密着が、一部の面または全部の面において解除され、チューブ体１０と連結部２０(挿着部２１)とが分離し易い状態となる。その状態のまま、チューブ体１０と連結部２０(挿着部２１)とを図面左右の離れる方向に移動させることによって、チューブ体１０と連結部２０(挿着部２１)と分離してしまう。結果的には、初めの状態である図１(ｂ)→図１(ａ)となって、元に戻る。
【００２３】
さて図２は、本発明の一実施の形態である発泡ウレタン噴出装置を示す図であり、上面部・側面図・底面図の３図を含む。ここでの発泡ウレタン噴出装置は、チューブ体(図示せず)の、突出管部２１への被着または離脱を行うよう装置構成されており、本体装置Ａと付属装置Ｂとを含む。本体装置Ａはもともと発泡ウレタンを噴出するためのスプレー装置であるので、付属装置Ｂはチューブ体を本体装置Ａに接続するための装置として考えてもよい。
【００２４】
この本体装置Ａは、突出型接続部２０・突出管部２１・管端部２２・導通路２３・ハンドル部５０（支持部）を含み、また、付属装置Ｂは、管体着脱用装置４０・押圧部材４１・ガイド部材３０のほか、接続されるチューブ体(図示せず) を含んで構成される。この本体装置Ａにおいて、突出管部２１の中心軸を通る導通路２３は、発泡ウレタンを噴出するための通路として設計されていた導出路であるが、本発明ではこの導通路２３を、加圧気体を導入するための通路としても用いる。また、加圧気体としては圧縮空気を使用するのが一般的であり、安全で使い易いものであるが、他の気体でも可能である。
【００２５】
【発明の効果】
本発明は、吹き付け(注入)装置の流体吹出口(噴出口、ノズル)に連結される付属品の取り付け／取り外し作業を、確実で個人差なく実施できる新規な接合技術を提供したものであり、チューブ体などの付属品の接続と取外しは、従来よりも簡単な方法で効率良く実施できる。本発明を、例えば発泡ウレタンなどの吹き付け装置（スプレーガン）の先端に設けられた金属性の噴出ノズル部とビニル管との接続に用いた場合には、既設の噴出ノズル部を利用した圧縮空気の導入によって、不安定または良好ではない作業環境であっても、作業者がより簡便で確実にチューブ部材の取り付け／取り外しが可能となり、現場での接続技術が大きく向上できる。
【図面の簡単な説明】
【図１】本発明が適用された方法および装置を示すための断面による構造説明図であり、(ａ)はチューブ体１０と連結体２０とが接続される前の状況を、(ｂ)はチューブ体１０の所定箇所が押圧されて閉塞された状況を、(ｃ)はチューブ体１０内に連結体２０の挿着部２１が挿入された後の状況を、(ｄ)は(ｃ)に続いて所定箇所１２の押圧が解除されて、チューブ体１０の内部の閉鎖が開放され、形状が元に戻された状況、をそれぞれ説明する図である。
【図２】本発明の一実施の形態である発泡ウレタン噴出装置を示す図である。
【符号の説明】
１０チューブ体
１０' 接続後のチューブ体
１０'' チューブ体１０'の内面
Ｄ１チューブ体１０の外径
ｄ１チューブ体１０の内径
１１開口端部
１２、１２' 所定箇所
１３所定領域（接続用）
１５所定領域（接続解除用）
２０連結体（突出型接続部）
２１挿着部（突出管部、流体吐出部）
２１’ 挿着部（突出管部）の外面
Ｄ２挿着部（突出管部）の外径
２２挿着部端部（管端部）
２３導通路２３
３０円筒状部材（円筒状ガイド部）
４０管体着脱用装置
Ａ本体装置
Ｂ付属装置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for connecting a tubular body product such as a tube body or a pipe member to other parts or devices, and more specifically, a relatively soft tube tube such as a vinyl tube, a metal / resin, etc. The present invention relates to a method for connecting and disconnecting a tube tube and a connecting member efficiently and reliably, and an apparatus related thereto, in a device including a connecting member made of a hard and hardly deformable material.
[0002]
[Prior art]
Examples of patent documents related to the prior art include Japanese Patent Application Laid-Open No. 2000-140717 “Two-component mixed portable spray gun”, Japanese Patent Application Laid-Open No. 7-247604 “Method and apparatus for applying urethane foam by injection”, Kaihei 7-232107 “Multi-liquid mixing and jetting device for aerosol composition” and Japanese Patent Laid-Open No. 7-16504 “Spray gun and external mixing type two-liquid coating device” are available. Each of these inventions is a spray device for ejecting a fluid such as urethane from a tip opening (jet port) such as a nozzle.
[0003]
Among the products related to the present invention and shown in the above patent document, there is a spray-type spraying device such as a urethane foam spraying tool. In this device, for the purpose of improving workability and operability, another accessory such as a vinyl tube for extension connection is further attached to the tip opening (spout nozzle) that becomes the fluid outlet, and these are continuously integrated. It is often used as a result.
[0004]
However, it is often not easy to attach a separate accessory such as a tubular body (made of vinyl) to the fluid outlet of the apparatus (made of metal), considering the situation at the construction site. Such a connected vinyl tube is made of soft material that is not too soft and not too hard so that it does not come out easily when fitted so that it will not come off during work, so that it fits well in dimension. Is used. Therefore, it is difficult for the operator to manually fit, and even if fitted, if it is not inserted to the back, it is very easy to drop off and it is dangerous. Also, there is a concern that it will not be possible to remove it when it is firmly inserted.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the great development and improvement of devices and methods in this field that are often used in the present when attaching separate accessories such as vinyl pipes to the fluid outlet of the spraying device. It is an object of the present invention to provide a method and a related apparatus having a novel joining technique capable of performing the attaching / detaching operation of these connecting accessories more easily, reliably and without individual differences.
More specifically, in the present invention, for example, a tubular body made of a connecting pipe such as a vinyl pipe is attached to or detached from a metallic jet nozzle provided at the tip of a spraying device (spray gun) such as urethane foam. It is an object of the present invention to provide a technique that can be performed more comfortably, easily, and safely in the joining / detaching technique.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems and achieve a desired object, a tube connecting method, a tube connecting / separating method, a tube attaching / detaching device, and a fluid discharge device according to the present invention are configured as follows. In addition, the code | symbol attached | subjected here corresponds with it attached | subjected to drawing 1 (a)-(d).
[0007]
(1) A tube connecting method for connecting the tube body 10 and the connecting body 20,
The tube body 10 is a cylindrical tube having an outer diameter D1 and an inner diameter d1 having an open end portion 11, and is made of a material that can be expanded or deformed in the diameter expansion direction.
The connector 20 includes an elongated cylindrical insertion portion 21 made of a material that does not deform,
This insertion portion 21 has an outer diameter D2, is set larger than the inner diameter d1 of the tube body 10, and an insertion portion end portion 22 that enables close contact with the opening end portion 11 of the tube body 10 is provided on the connection side. Further comprising a conduction path 23 that passes through the interior and leads to the insertion portion end 20;
In a state where the tube body opening end portion 11 and the insertion portion end portion 22 are in close contact with each other, the predetermined portion 12 of the tube body 10 is closed to make the predetermined region 13 inside the connection side of the tube body 10 airtight. By introducing the pressurized gas through the conduction path 23, the close contact between the tube body opening end portion 11 and the insertion portion end portion 22 is released. At that time, the tube body 10 or the insertion portion 21 is shown in the drawing. It was set as the tube body connection method which moved to the left-right direction and approached, and inserted the insertion part 21 in the tube body 10, and connected both. Note that the introduction of pressurized gas (compressed air or the like) here plays a role of a lubricant, and it is possible to release both of them closely and to insert (insert) them between them very efficiently.
[0008]
(2) In the tube connection method of (1),
In order to restrict or limit any operation including deformation or buckling of the tube body 10 in the radial direction, the cylindrical member 30 is arranged and set on the radially outer side of the tube body 10. The cylindrical member 30 serves as a guide for preventing deformation of the tube body. At this time, if the outer diameter of the tube body 10 after the insertion portion 21 is inserted into the tube body 10 is D1 ′, the inner diameter φ of the cylindrical guide portion 30 at the position related to the insertion portion 21 is , D1 ′ ≦ φ may be set.
[0009]
(3) In the tube connection method of (1) or (2),
In order to make the tube body 10 airtight, the desired portion 12 of the tube body 10 is pressed and deformed (by the pressing member 41) from the outside of the tube body 10 to close the portion 12.
[0010]
(4) Tube body connection / separation for separating (separating) the tube body 10 and the coupling body (insertion portion 21) connected by the tube body connection method of any one of (1) to (3). A method,
A predetermined portion 12 ′ of the tube body 10 to which the connecting body 21 is not inserted is closed, and a predetermined region 15 in the tube body 10 formed by the predetermined portion 12 ′ and the connecting body 21 is made airtight, By introducing a pressurized gas via the conduction path 23, the tube body 10 and the coupling body 21 are vented to release the close contact, and then the tube body 10 or the coupling body 21 is moved to move both of them. It was set as the pipe body connection isolation | separation method characterized by making it isolate | separate.
[0011]
(5) A tube body attaching / detaching device 40 for attaching the tube body 10 to the protruding connection portion 20 provided in the apparatus or detaching the tube body 10 ′ already attached to the protruding connection portion 20. Because
The tube body 10 is a cylindrical tube having an outer diameter D1 and an inner diameter d1 having an open end portion 11, and is made of a material that can be expanded or deformed in the diameter expansion direction.
The protruding connection portion 20 includes an elongated cylindrical protruding tube portion 21 made of a material that does not deform,
The projecting tube portion 21 has an outer diameter D2 set to be larger than an inner diameter d1 of the tube body 10, and includes a tube end portion 22 on the connection side that enables close contact with the open end portion 11 of the tube body 10, , Having a conduction path 23 that passes through the interior and communicates with the pipe end 22.
In a state where the tube body 10 opening end portion 11 and the tube end portion 22 are in close contact with each other, or in a state where the inner surface of the tube body 10 ′ is already adhered and in close contact with the outer surface of the protruding tube portion 21, the tube A tube body hermetic means that presses and closes the predetermined portion 12 of the tube body 10 from the outside to close the predetermined region 13 inside the connection side of the tube body 10;
Pressurized gas introduction means for introducing a pressurized gas into the predetermined region 13 in an airtight state via the conduction path 23;
When the close contact state between the tube body 10 opening end portion 11 and the tube end portion 22 or the close contact state between the outer surface of the protruding tube portion 21 and the inner surface of the tube body 10 ′ is released by introduction of pressurized gas, Moving means for moving the tube body 10 ′ or the protruding tube portion 21,
The tube body attaching / detaching device 40 is configured so as to attach or detach the tube body 10.
[0012]
(6) In the tubular body attaching / detaching device of (5),
This device comprises a cylindrical guide part 30 arranged on the radially outer side of the tube body (10, 10 ') in order to limit the radial deformation or operation of the tube body (10, 10'). .
[0013]
(7) A fluid ejection device for ejecting fluid,
This apparatus includes a fluid discharge portion 20 and a tube body 10 attached and connected thereto. The tube body 10 is a cylindrical tube having an outer diameter D1 and an inner diameter d1 having an open end 11, and expands in the direction of increasing the diameter. Or made of a deformable material,
The fluid discharge portion 21 includes an elongated cylindrical protruding tube portion 22 made of a material that does not deform,
The projecting tube portion 22 has an outer diameter D2 set to be larger than the inner diameter d1 of the tube body, and includes a tube end portion 22 that enables close contact with the open end portion 11 of the tube body 10 on the connection side. And has a conduction path 23 that leads to the pipe end 22,
The tube body 10 has a predetermined position (12 or 12) in either a close contact state between the opening end portion 11 and the tube end portion 22 or a close contact state between the outer surface of the protruding tube portion 21 and the inner surface of the tube body 10 ′. ') Is pressed from outside to be closed, and a predetermined region (13 or 15) inside the connection side of the tube body 10 is provided with an airtight state,
When pressurized gas is introduced into the predetermined region (13 or 15) in the airtight state via the conduction path 23 and any one of the contact states is released by introducing the pressurized gas, the tube body (10, 10 ′) ) Or the projecting tube portion 21 is moved, and the fluid discharge device is configured such that the tube body is attached or detached.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment according to the present invention will be described in detail with reference to FIGS. Here, FIG. 1 is a structural explanatory view showing the main part of the apparatus constructed according to the present invention in section, and FIG. 2 is a diagram showing a foamed urethane jetting apparatus as one embodiment of the present invention. is there.
The apparatus in FIG. 1 includes a connecting tube body 10, a connecting body 20 including an insertion portion 21 connected and connected thereto, and a tube body attaching / detaching apparatus 40 as main components. The tube body attaching / detaching device 40 is an attached device used for connecting or removing the tube body 10, and is configured integrally with the tube body 10 and can operate in conjunction with the tube body 10. The tubular body attaching / detaching device 40 includes a cylindrical member 30 on the outer side in the radial direction of the tube body 10 in order to restrict or restrict the deformation or operation of the tube body 10 in the radial direction.
[0015]
Among these FIG. 1, FIG. 1 (a) shows the situation before the tube body 10 and the connecting body 20 are inserted and connected, and FIG. 1 (b) shows that the predetermined portion 12 of the tube body 10 is pressed. The situation of being blocked is shown respectively. FIG. 1C shows the situation after the insertion portion 21 of the coupling body 20 is inserted into the tube body 10 and the connection is made. The tube body 10 and the coupling body 20 are closer to each other. Has been moved. FIG. 1 (d) shows a situation where the pressing of the predetermined portion 12 is released following FIG. 1 (c) and the shape of the tube body 10 is restored.
[0016]
First, as shown in FIG. 1A, a tube body 10 to be connected is a cylindrical tube having an outer diameter D1 and an inner diameter d1 having an open end 11, and can be expanded or deformed in the direction of increasing the diameter. A soft material such as vinyl resin is used.
The connecting body 20 connected and connected to the tube body 10 includes an elongated cylindrical insertion portion 21 made of a material that does not deform such as metal, and the insertion portion 21 is inserted into the tube body 10 and connected. Is made. The insertion portion 21 has an outer diameter D2 set to be larger than the inner diameter d1 of the tube body 10, and the insertion portion end portion 22 has a truncated cone shape having a tapered surface here. Since the end of the insertion portion 21 is not inserted into the tube body 10 before being connected, the insertion portion end 22 and the opening end portion 11 of the tube body 10 only abut. In this case, the abutted surfaces (here, a circular shape) can be closely contacted. At this time, it is preferable to apply a force in a direction in which the tube body 10 to be connected and the insertion portion 21 are in close contact with each other.
[0017]
What is important in these configurations is that the insertion portion 21 of the connector 20 has a structure having a conduction path 23 that passes through the inner center thereof and communicates with the end portion 20 of the insertion portion. Through the passage 23, a fluid such as a gas / liquid can be introduced from inside or outside the device. Therefore, the fluid can be introduced into the tube body 10 through the conduction path 23 by bringing the tube body 10 opening end portion 11 and the insertion portion 21 end portion 22 into contact / contact.
[0018]
In FIG.1 (b), the tube body opening end part 11 and the insertion part edge part 22 are hold | maintained in the state which both contact | adhered by means, such as pressing from the left direction or the right direction, for example. Here, as a configuration in which the tube body 10 is held by the tube body attaching / detaching device 40, an operation that interlocks with the tube body 10 can be performed. Next, as a predetermined location of the tube body 10, a location indicated by 12 in FIG. 1 is selected and closed. As the means for closing the predetermined portion, the pressing means provided in the tube body attaching / detaching device 40 is used. As a specific configuration, the predetermined pressure of the tube body 10 is determined by means such as driving the pressing member 41 from below. The location 12 is pressed from the outside.
[0019]
In FIG.1 (b), the predetermined location 12 is pressed and the tube body 10 is obstruct | occluded, and the predetermined area | region 13 inside a connection side will be in an airtight state. In this state, the close contact between the tube body opening end portion 11 and the insertion portion end portion 22 is released by introducing pressurized gas through the conduction path 23. The release of the close contact may be a part or the entire contact portion of the contacted circular linear shape, but the pressurization of the pressurized gas plays a role as a lubricant. It is realized that the gas introduction tube body itself can easily move leftward in FIG. At the timing when the close contact is released, the tube body 10 or the insertion portion 21 is quickly moved in the connecting direction, and the insertion portion 21 is inserted into the tube body 10 to integrally couple them. For the relative movement of both, the tube body attaching / detaching device 40 can be configured to be integrated with the tube body 10, and the tube body attaching / detaching device 40 holding the tube body 10 is moved to the left in the drawing. Just move to.
[0020]
FIG. 1 (c) shows a situation after the movement in which the tube body 10 and the connection body 20 are brought closer to each other. The insertion portion 21 of the connection body 20 is inserted into the tube body 10, and the tube body 10 is attached. And the connection is terminated. In FIG. 1 (c), the pressing member 41 presses the tube body 10 from below to above at a predetermined position 12 ′ and remains in the closed state. Therefore, in FIG. 1D, after the connection between the two (two bodies) is completed, it is necessary to lower the pressing member 41 from the upper position to the original position to open the inside of the tube body 10. The state is shown. Since the tube body 10 is elastic, it returns to the original straight circular tube shape.
[0021]
The tubular body attaching / detaching device 40 includes a cylindrical member 30, and the cylindrical member 30 (cylindrical guide portion) has a concentric enlarged diameter over the entire connection side of the outer surface of the cylindrical tube body 10. It is configured to cover. As for the arrangement relationship between the tube body 10 and the cylindrical member 30, the same positional relationship is maintained even when the tube body 10 moves in the horizontal direction of the drawing, and the tube body attaching / detaching device 40, the cylindrical member 30, and the tube The body 10 is integrally formed and performs an interlocking operation.
The inner diameter of the cylindrical member 30 is set to be slightly larger than the outer diameter of the tube body 10 before connection, and restrains or restricts any operation including deformation of the tube body 10 in the radial direction and buckling. be able to. And if the outer diameter of the expanded tube body 10 in the state after the insertion part 21 is inserted in the tube body 10 is set to D1 ', the inner diameter of the cylindrical member 30 at the position related to the insertion part φ is preferably set as D1 ′ ≦ φ.
[0022]
FIG. 1D shows a situation after the insertion part 21 of the coupling body 20 is inserted into the tube body 10 and the tube body 10 is attached and the connection is completed. Using (d) and (c), the removal (detachment) of the tube body 10 from the insertion portion 21 will be described.
As shown in FIG. 1 (d), the inner surface 10 '' of the tube body 10 and the outer surface 21 'of the insertion portion are in close contact with each other. When the tube is pressed from the outside to close it and return to the state of FIG. 1C, the predetermined region 15 inside the connection side of the tube body 10 becomes airtight. Therefore, when the pressurized gas is introduced into the predetermined region 15 via the conduction path 23, the close contact between the inner surface 10 '' of the tube body 10 and the outer surface 21 'of the insertion portion 21 may be partly or entirely. The surface is released and the tube body 10 and the connecting portion 20 (insertion portion 21) are easily separated. The tube body 10 and the connection part 20 (insertion part 21) will be isolate | separated by moving the tube body 10 and the connection part 20 (insertion part 21) in the direction which leaves | separates the drawing left and right in that state. As a result, the initial state is changed from FIG. 1 (b) to FIG. 1 (a).
[0023]
FIG. 2 is a view showing a foamed urethane jetting apparatus according to an embodiment of the present invention, and includes three views: a top surface portion, a side view, and a bottom view. The urethane foam ejection device here is configured to attach or detach a tube body (not shown) to the protruding tube portion 21, and includes a main body device A and an accessory device B. Since the main device A is originally a spray device for ejecting urethane foam, the accessory device B may be considered as a device for connecting the tube body to the main device A.
[0024]
The main body device A includes a projecting connection portion 20, a projecting tube portion 21, a tube end portion 22, a conduction path 23, and a handle portion 50 (supporting portion), and the accessory device B includes a tube body attaching / detaching device 40. In addition to the pressing member 41 and the guide member 30, a tube body (not shown) to be connected is included. In this main unit A, the conduction path 23 passing through the central axis of the protruding pipe portion 21 is a lead-out path designed as a path for ejecting urethane foam. In the present invention, the conduction path 23 is pressurized. It is also used as a passage for introducing gas. In addition, it is common to use compressed air as the pressurized gas, which is safe and easy to use, but other gases are also possible.
[0025]
【The invention's effect】
The present invention provides a novel joining technique capable of performing attachment / detachment work of accessories connected to a fluid outlet (jet outlet, nozzle) of a spraying (injection) device reliably and without individual differences, Connection and removal of accessories such as a tube body can be efficiently performed by a simpler method than before. When the present invention is used for the connection between a metallic jet nozzle provided at the tip of a spraying device (spray gun) such as urethane foam and a vinyl pipe, compressed air using the existing jet nozzle With the introduction of the tube member, even in an unstable or unsatisfactory working environment, the operator can more easily and reliably attach / remove the tube member, and the connection technique in the field can be greatly improved.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a cross-sectional structural explanatory diagram illustrating a method and apparatus to which the present invention is applied, where (a) shows a situation before a tube body 10 and a connecting body 20 are connected, and (b) (C) shows the situation after the insertion part 21 of the connecting body 20 is inserted into the tube body 10, (d) shows the situation in which (c) is closed. Then, the press of the predetermined location 12 is cancelled | released, the inside of the tube body 10 is open | released, and it is a figure explaining the condition where the shape was returned to the original, respectively.
FIG. 2 is a view showing a urethane foam ejection device according to an embodiment of the present invention.
[Explanation of symbols]
10 Tube body 10 ′ Tube body 10 ″ after connection Internal surface D1 of tube body 10 ′ Outer diameter d1 of tube body 10 Inner diameter 11 of tube body 10 Open end 12, 12 ′ Predetermined portion 13 Predetermined region (for connection)
15 Predetermined area (for disconnection)
20 Linkage (protruding connection)
21 Insertion part (projection pipe part, fluid discharge part)
21 'outer surface D2 of insertion part (protruding pipe part) outer diameter 22 of insertion part (protruding pipe part) insertion part end part (pipe end part)
23 Conduction path 23
30 Cylindrical member (cylindrical guide)
40 Pipe body attaching / detaching apparatus A Main body apparatus B Attached apparatus

Claims

A tube connection method for connecting a tube body and a coupling body,
The tube body is a cylindrical tube having an outer diameter D1 inner diameter d1 having an open end, and is made of a material that can be expanded or deformed in the diameter expansion direction.
The coupling body includes an elongated cylindrical insertion portion made of a material that does not deform,
The insertion portion has an outer diameter D2 set to be larger than the inner diameter d1 of the tube body, and is provided with an insertion portion end portion that enables close contact with the opening end portion of the tube body on the connection side. And has a conduction path leading to the end of the insertion part,
In a state where the tube body opening end and the insertion portion end are in close contact with each other, a predetermined portion of the tube body is closed, and a predetermined region inside the connection side of the tube body is made airtight, and then passes through the conduction path. Then, by introducing the pressurized gas, the close contact between the opening end of the tube body and the end of the insertion portion is released, and at that time, the tube body or the insertion portion is moved to insert the insertion portion into the tube body. It is a tube connection method to connect both of them,
The tube body is provided with a cylindrical member that concentrically expands the outer surface of the tube body in order to constrain or limit radial deformation or movement.
On the outside of the cylindrical member, there is disposed a tube body attaching / detaching device comprising means for holding the tube body and means for pressing and deforming a predetermined portion of the tube body from the outside to close the portion.
The tube body attaching / detaching device, the cylindrical member, and the tube body are configured integrally and operate in conjunction with each other, so that the tube body attaching / detaching device / A tubular body connecting method characterized in that the same positional relationship is maintained for the arrangement of the three members of the cylindrical member and the tube body.

A tube body attaching / detaching device for attaching a tube body to a protruding connection part provided in the device or detaching the tube body attached to the protruding connection part,
The tube body is a cylindrical tube having an outer diameter D1 inner diameter d1 having an open end, and is made of a material that can be expanded or deformed in the diameter expansion direction.
The protruding connection portion includes an elongated cylindrical protruding tube portion made of a material that does not deform,
This projecting tube portion has an outer diameter D2 set to be larger than the inner diameter d1 of the tube body, and is provided with a tube end portion that enables close contact with the open end portion of the tube body on the connection side, Having a conduction path leading to the pipe end,
In a state where the tube body opening end and the tube end are in close contact with each other, or in a state where the tube body inner surface is already adhered to the outer surface of the projecting tube, the tube body is fixed to the tube body. A tube body hermetic means that presses and closes the location from the outside to make the predetermined region inside the connection side of the tube body airtight;
A pressurized gas introducing means for introducing a pressurized gas into the predetermined region in an airtight state via the conduction path;
When either the close contact state between the tube body opening end and the tube end portion or the close contact state between the outer surface of the protruding tube portion and the inner surface of the tube body is released by the introduction of pressurized gas, the tube body or the protruding tube portion And moving means for moving
It is a device for attaching and detaching a tube body configured to attach or detach a tube body,
The tube body is provided with a cylindrical guide portion that concentrically expands the outer surface of the tube body in order to constrain or limit radial deformation or movement.
On the outside of the cylindrical member, there is disposed a tube body attaching / detaching device comprising means for holding the tube body and means for pressing and deforming a predetermined portion of the tube body from the outside to close the portion.
The tube body attaching / detaching device, the cylindrical member, and the tube body are configured integrally and operate in conjunction with each other, so that the tube body attaching / detaching device / An apparatus for attaching and detaching a tube body, characterized in that the same positional relationship is maintained for the three members of the cylindrical member and the tube body.

A fluid ejection device for ejecting fluid,
This device comprises a fluid discharge part and a tube body attached and connected thereto,
The tube body is a cylindrical tube having an outer diameter D1 inner diameter d1 having an open end, and is made of a material that can be expanded or deformed in the diameter expansion direction.
The fluid discharge portion includes an elongated cylindrical protruding tube portion made of a material that does not deform,
This projecting tube portion has an outer diameter D2 set to be larger than the inner diameter d1 of the tube body, and is provided with a tube end portion that enables close contact with the open end portion of the tube body on the connection side, Having a conduction path leading to the pipe end,
In a state where the tube body open end and the tube end are in close contact with each other, or the protruding tube portion outer surface and the tube body inner surface are in close contact with each other, a predetermined portion of the tube body is pressed from outside to close the tube. A predetermined area inside the connection side of the body is provided with an airtight state,
When a pressurized gas is introduced into the predetermined region in the airtight state via the conduction path and the tightly closed state is released by introducing the pressurized gas, the tube body or the projecting tube portion is moved, and the tube body is moved. A fluid ejection device configured to perform deposition or removal;
The tube body is provided with a cylindrical guide portion that concentrically expands the outer surface of the tube body in order to constrain or limit radial deformation or movement.
On the outside of the cylindrical member, there is disposed a tube body attaching / detaching device comprising means for holding the tube body and means for pressing and deforming a predetermined portion of the tube body from the outside to close the portion.
The tube body attaching / detaching device, the cylindrical member, and the tube body are configured integrally and operate in conjunction with each other, so that the tube body attaching / detaching device / A fluid ejection device characterized in that the same positional relationship is maintained for the arrangement of the three members of the cylindrical member and the tube body.