JP3630834B2

JP3630834B2 - Method for mixing two or more kinds of resin raw material liquids and mixing apparatus therefor

Info

Publication number: JP3630834B2
Application number: JP07554196A
Authority: JP
Inventors: 明夫佐藤
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 1995-04-24
Filing date: 1996-03-29
Publication date: 2005-03-23
Anticipated expiration: 2016-03-29
Also published as: JPH0910666A

Description

【０００１】
【産業上の利用分野】
本発明は、反応することにより硬化する二種以上の樹脂原料液体を超音波振動を利用して混合する樹脂原料液体の混合法及びその混合装置の改良に関する。
【０００２】
【従来の技術】
従来から、超音波振動を利用して２種以上の液体を混合する混合法及びその混合装置として以下に記載するものが知られている。例えば、特公昭６２−５７３７４号公報には、混合槽としての乳化槽に貯溜された２種以上の液体に超音波伝送用固体ホーンの先端を浅く浸漬させ、超音波によるキャビテーション効果により乳化させることが開示され、特開昭５８−６７３２６号公報には、大気に連通した混合槽としての乳化槽に貯溜された２種以上の液体に超音波伝送用固体ホーンの先端を浅く浸漬させ、超音波によるキャビテーション効果により乳化させることが開示されている。また、特開昭６４−３８１３２号公報には、樹脂原料液体としての二液性の接着剤を混合槽としての収容槽に貯留し、超音波により混合することが開示され、特開平１−１１５４４４号公報には、混合槽としての円筒内で、分散相の液体と連続相の液体とを超音波を用いて混合することが開示され、特開平５−４９９９９号公報には、逆円錐形状の混合カップを準備し、混合カップ内の中央にコニカルホーンを配設し、樹脂原料液体の給送管としての導管の樹脂流出口を超音波伝送用固体ホーンの側肌面に臨ませ、接着剤としての樹脂原料液体を樹脂流出口から側肌面に放出させ、超音波伝送用固体ホーンの側肌面を伝わらせてその先端に導き、超音波伝送用固体ホーンに接する接着剤に回転運動を与えることにより撹拌混合を行うことが開示されている。また、特開平５−１６８８８９号公報には、混合槽としての案内管に超音波伝送用固体ホーンを設置し、超音波伝送用固体ホーンの先端面に向けて第１の液体と第２の液体とを放出させ、この第１の液体と第２の液体とに超音波振動を与えることにより第１の液体と第２の液体とを混合することが開示され、特開平６−５７２２９号公報には、２種以上の接着剤を混合槽としての撹拌槽に入れて機械的に撹拌しつつ超音波を当てて混合する撹拌混合法が開示されている。
【０００３】
このように、従来の超音波振動を用いた液体の混合法及びその混合装置は、２種以上の液体を混合槽内で混合する方式を採用している。
【０００４】
なお、超音波振動による混合ではないが、特開昭６１−１１８１２４号公報には、断面半円形状の混合部材を斜めに設置し、この混合部材に高粘性の液体と低粘性の液体とを供給し、振動機構により混合部材に６０サイクルの振動を与えて流下する液体を混合、撹拌することが開示され、特開平３−２１７２２３号公報には、流路部材を振動発生装置により共振振動させ、流路部材の流路内で着色剤、プラスチックス素材、添加剤等からなる成形材料の混合を図ることが開示されている。
【０００５】
【発明が解決しようとする課題】
ところで、二種以上の樹脂原料液体には反応することにより硬化するものがあるが、この二種以上の樹脂原料液体を混合槽内で混合することにすると、樹脂原料液体の混合に伴って硬化反応が進行し、反応することにより硬化する二種以上の樹脂原料液体を混合槽内に補給しつつ硬化反応の進行状態にある混合樹脂を混合槽から下流側に送給して吐出させる連続作業を長時間行う作業のような場合ならともかくも、短い時間間隔で断続的に作業を行うような場合には、その作業停止時間中にも硬化反応が混合槽内で進行するので、混合槽内に硬化した樹脂が付着する、混合槽内に存在する二種以上の樹脂原料液体の組成が変化する等の不具合が発生する。そこで、作業を中断または停止直後、あるいは作業開始直前に、毎回あるいは適当回数毎に、混合槽内を溶剤により洗浄しているが、溶剤の使用は、労働安全性の観点、環境汚染の観点から極力避けるべきである。また、洗浄直後すぐに作業を開始する場合には、溶剤が混入する懸念があり、樹脂原料液体の組成変動等を考慮して空吐出を行うことが必要となって、廃棄物処理の観点からも好ましくない。更に、洗浄装置等を準備しなければならないため、混合装置自体が大型化するという問題点もある。
【０００６】
そこで、本発明の目的は、混合槽を用いなくても反応により硬化する二種以上の液体を混合する混合法又はその混合装置を提供することにある。
【０００７】
【課題を解決するための手段】
本発明の請求項１、８に記載の二種以上の樹脂原料液体の混合法及びその混合装置は、反応することにより硬化する二種以上の樹脂原料液体を給送する各給送管の樹脂流出口と超音波伝送用固体ホーンの先端部とが互いに近接して位置し、被塗布体に形成された樹脂原料液体案内溝内でこれに沿って二種以上の樹脂原料液体を同時に流出させつつ各給送管の樹脂流出口を移動させ、前記超音波伝送用固体ホーンの先端部を前記被塗布体に流出された直後の樹脂原料液体に接触させつつ前記各給送管の樹脂流出口の移動に追従させつつ該樹脂原料液体に超音波振動を与えることにより各樹脂原料液体を混合することを特徴とする。
【００１０】
本発明の請求項２、９に記載の二種以上の樹脂原料液体の混合法及びその混合装置は、前記超音波伝送用固体ホーンの先端部が前記樹脂原料液体案内溝内に挿入されていることを特徴とする。
【００１１】
本発明の請求項３、１０に記載の二種以上の樹脂原料液体の混合法及びその混合装置は、反応することにより硬化する二種以上の樹脂原料液体を給送する各給送管の樹脂流出口が互いに離間して位置し、しかも、超音波伝送用固体ホーンの先端部が前記各樹脂流出口に対して離間して位置し、各樹脂流出口を移動させることにより二種以上の樹脂原料液体の一方を先行して被塗布体に形成された樹脂原料液体案内溝内でこれに沿って流出させると共に残余の樹脂原料液体を追従して流出させ、前記超音波伝送用固体ホーンの先端部を前記被塗布体に流出された樹脂原料液体に接触させつつかつ前記各給送管の樹脂流出口の移動に追従させつつ該樹脂原料液体に超音波振動を与えることにより各樹脂原料液体を混合することを特徴とする。
【００１２】
本発明の請求項４、１１に記載の二種以上の樹脂原料液体の混合法及びその混合装置は、前記二種以上の樹脂原料液体のうち少なくとも一種類の樹脂原料液体の前記被塗布体への供給量が前記他の種類の樹脂原料液体の前記被塗布体への供給量よりも多く、前記一種類の樹脂原料液体の上に載せて前記他の種類の樹脂原料液体が供給されることを特徴とする。
【００１３】
本発明の請求項５、１２に記載の二種以上の樹脂原料液体の混合法及びその混合装置は、前記二種以上の樹脂原料液体のうち少なくとも一種類の樹脂原料液体の前記被塗布体に対する付着力が他の種類の樹脂原料液体の前記被塗布体に対する付着よりも小さく、前記一種類の樹脂原料液体の上に載せて前記他の種類の樹脂原料液体が供給されることを特徴とする。
【００１４】
本発明の請求項６、１３に記載の二種以上の樹脂原料液体の混合法及びその混合装置は、前記一種類の樹脂原料液体の前記被塗布体への供給量が前記他の種類の樹脂原料液体の前記被塗布体への供給量よりも多いことを特徴とする。
【００１５】
本発明の請求項７、１４に記載の二種以上の樹脂原料液体の混合法及びその混合装置は、前記二種以上の樹脂原料液体の流速がほぼ等しいことを特徴とする。
【００１６】
本発明に係る二種以上の樹脂原料液体の混合法及びその混合装置によれば、二種以上の樹脂原料液体を樹脂原料液体案内溝に流出させた後、超音波伝送用固体ホーンにより二種以上の樹脂原料液体に超音波振動が与えられ、樹脂原料液体案内溝内で二種以上の樹脂原料液体の混合が行われる。従って、樹脂原料液体の混合槽が不要である。また、樹脂原料液体案内溝内で樹脂原料液体に超音波振動が与えられるので、被塗布体の溝外に樹脂原料液体が飛散するのを極力防止できる。
【００１７】
【発明の実施の形態】
本発明の二種以上の樹脂原料液体の混合法及びその混合装置の実施例を図１ないし図５を参照しつつ説明する。
【００１８】
（実施例１）
図１ないし図３は本発明に係わる樹脂原料液体の混合法及びその混合装置の一実施例を示し、図１において、１は電気音響変換器としての振動子、２は超音波伝送用固体ホーン、３は被塗布体としての成形品、４はその成形品３に形成された樹脂原料液体案内溝、５、６は給送管である。超音波伝送用固体ホーン２にはネジ穴が形成されて振動子１の機械端子１ａに溶接又はロー付け又はネジ接合により固着されている。超音波伝送用固体ホーン２の先端面２ａには加工工具を装着してもよいが、ここでは加工工具を用いないこととする。図１に示されている超音波伝送用固体ホーン２は、その側肌面２ｂの形状が指数関数形であるが、側肌面２ｂの形状は図２（イ）に示すように一様断面ステップ形、図２（ロ）に示すようにコニカル形、図２（ハ）に示すようにカテノイダル形のいずれであっても良い。成形品３は例えばＡＢＳ樹脂材料、ＰＣ材料を用いて作製される。
【００１９】
樹脂原料液体案内溝４は、この実施例では、その幅及び深さが３ｍｍとされている。給送管５、６は二種の樹脂原料液体７、８を給送するのに用いられる。樹脂原料液体７、８には、ここでは、株式会社イノアックコーポレーションの二液混合発泡硬化型ウレタン樹脂の反応途中液状流動タイプを用い、この二液混合発泡硬化型ウレタン樹脂の組成は、ポリオールとイソシアネートとから概略なり、ポリオールを主剤として１００重量部、イソシアネートを助剤として２０ないし３０重量部の割合で混合させることにする。この二液混合発泡硬化型ウレタン樹脂は、混合によりイソシアネートと水とが尿素結合することにより炭酸ガスを発生する泡化反応とイソシアネートとポリオールとのウレタン結合により硬化する重合反応とにより、発泡硬化するものである。その発泡倍率は、ここでは、約５倍である。なお、これらの樹脂原料液体に触媒、整泡剤、推進剤等を予め混入させておくか、これらの樹脂原料液体７、８の混合時に第３の液体として供給してもよい。
【００２０】
給送管６の内径は給送管５の内径よりも大きいものが用いられる。これは、ポリオールの供給量がイソシアネートの供給量に較べて多く、流速をほぼ等しくするためである。給送管５、６の各樹脂流出口５ａ、６ａは樹脂原料液体案内溝４内で互いに近接して位置され、二種以上の樹脂原料液体７、８が樹脂原料液体案内溝４に同時に流出される。給送管６によって給送される樹脂原料液体８（ポリオール）の供給量が多く、給送管５によって給送される樹脂原料液体７（イソシアネート）の供給量が少ないので、供給量の多い樹脂原料液体８の上に供給量の少ない樹脂原料液体７を載せて混合するのが混合をスムーズに行う観点から望ましい。また、樹脂原料液体８の成形品３に対する付着力は樹脂原料液体７の成形品３に対する付着力よりも小さいので、この観点からも樹脂原料液体８の上に樹脂原料液体７を載せて混合するのが望ましい。樹脂原料液体案内溝４に流出された直後の流出樹脂原料液体７、８の溝底４ａまでの深さは約２ｍｍである。超音波伝送用固体ホーン２の先端面２ａは溝底４ａから所定の高さ（溝底４ａから約１ｍｍの高さ）に位置され、超音波伝送用固体ホーン２の側肌面２ｂは溝壁４ｂに接触しないように溝壁４ｂから所定の間隔を開けて位置されている。振動子１には支持フランジ１ｃが設けられ、この支持フランジ１ｃには給送管５、６の先端部が固定されている。
【００２１】
給送管５、６の先端部５ａ、６ａは樹脂原料液体案内溝４に沿って成形品３に対して相対的に移送される。超音波伝送用固体ホーン２の先端部は樹脂流出口５ａ、６ａの進行方向に対してその直後に位置され、その超音波伝送用固体ホーン２の先端面２ａは樹脂原料液体案内溝４内に流出された樹脂原料液体７、８に接触されている。超音波伝送用固体ホーン２は樹脂原料液体案内溝４に沿って給送管５、６に追従され、樹脂原料液体７、８は樹脂原料液体案内溝４に流出すると同時かその直後に超音波振動が与えられ、樹脂原料液体案内溝４内で混合され、樹脂原料液体案内溝４に沿って発泡体が形成される。
【００２２】
なお、樹脂原料液体案内溝４の断面形状は図３（イ）に示すように角形状、図３（ロ）に示すように半円弧形状、図３（ハ）に示すようにＶ形状、図３（ニ）に示すように上面及び底面を面取りした形状、図３（ホ）に示すように底面を面取りした形状の何れであっても良い。
【００２３】
（実施例２）
図４は本発明に係わる二種以上の樹脂原料液体の混合法に適用する混合装置の模式図を示し、図５は本発明に係わる二種以上の樹脂原料液体の混合法に適用する混合装置の概略構成を示す斜視図であって、図４において、１１は統括制御装置、１２は温度調整装置、１３は温水、１４は第１の樹脂原料液体７を貯留する容器、１６は第２の樹脂原料液体８を貯留する容器、１８、１９は樹脂原料液体７、８をそれぞれ撹拌するモータ、２０は給送管５、６に樹脂原料液体７、８を給送する給送制御装置、２１は高周波電源制御装置、２２は移動制御装置、２３はＸ方向移動機構、２４はＹ方向移動機構、２５、２６は傘歯歯車（図５では平歯歯車）、２７は駆動モータである。統括制御装置１１は温度調整装置１２、給送制御装置２０、高周波電源制御装置２１、移動制御装置２２を総合的に制御する役割を果たす。
【００２４】
振動子１は高周波電源制御装置２１により所定の発振周波数及び振幅で超音波振動を発生し、給送制御装置２０はサーボモータ又はパルモータからなるマイクロギヤポンプを備え、統括制御装置１１の指令に基づき吐出のＯＮ・ＯＦＦ、吐出量、樹脂原料液体７、８の吐出比率の調整を行う。この発明の実施例では、樹脂原料液体８の吐出量は例えば２１０ｍｇ／ｓ、樹脂原料液体７の吐出量は例えば６０ｍｇ／ｓである。給送管５、６はその長さを極力短くすることが、内圧による内部容積の変動を避け、発泡率、樹脂原料液体硬化後の発泡体の寸法ばらつきを少なくするうえで望ましい。温度調整装置１２は樹脂原料液体７、８の温度変化による粘性、比重の変化を避ける観点から、かつ、反応速度を安定させる観点から、樹脂原料液体７、８の温度の一定化（例えば３０度ｃに保持する）を図るために用いられる。移動制御装置２２はＸ−Ｙ移動機構２３、２４を駆動制御する他、図５に示すように、駆動機構２８により超音波伝送用固体ホーン２を上下方向（Ｚ軸方向）に駆動制御する役割、給送管５、６に対する側肌面３ｂの周周り方向の位置（ｒ方向）を定める役割を果たす。
【００２５】
成形品３は、例えば図５に示すようなフランジ付円筒であり、樹脂原料液体案内溝４は円筒基部の周りに形成された環状溝からなる。成形品３は、Ｘ−Ｙ移動機構２３、２４に搭載されて、超音波伝送用固体ホーン２に対して相対的に移動され、その先端２ａが樹脂原料液体案内溝４に沿ってトレースされる。このＸ−Ｙ移動機構２３、２４は点から点までの位置決め精度が要求される通常の組立用のロボット移動制御機構と異なり、移動軌跡の精度、移動速度の精度が重要となるので、アーク溶接用ロボットと類似の機構を使用するのが望ましい。
【００２６】
（実施例３）
図６は本発明に係わる二種以上の樹脂原料液体の混合法及び混合装置の他の例を示し、超音波伝送用固体ホーン２の先端部と各給送管５、６の樹脂流出口５ａ、６ａとは成形品３の樹脂原料液体案内溝４内に位置され、各樹脂流出口５ａ、６ａは樹脂原料液体案内溝４の延びる方向に互いに離間されている。ここでは、一方の樹脂原料液体（ポリオール）８が先行して樹脂原料液体案内溝４に流出され、他方の樹脂原料液体（イソシアネート）７が後から樹脂原料液体案内溝４に流出される。樹脂原料液体案内溝４に流出された直後の流出樹脂原料液体７、８の溝底４ａまでの深さは約２ｍｍであり、超音波伝送用固体ホーン２の先端面２ａは溝底４ａからの高さは約１ｍｍであり、超音波伝送用固体ホーン２の先端部は樹脂原料液体案内溝４に沿う方向に給送管５に対して離間して設けられている。
【００２７】
各給送管５、６の樹脂流出口５ａ、６ａを該樹脂原料液体案内溝に沿って移動させることにより樹脂原料液体８が先行して樹脂原料液体案内溝４に流出され、樹脂原料液体７が樹脂原料液体案内溝４に追従して流出される。超音波伝送用固体ホーン２の先端部は、樹脂原料液体案内溝４に流出された樹脂原料液体７、８に接触され、この樹脂原料液体７、８に超音波振動を与えつつ樹脂原料液体案内溝４に沿って追従される。これにより各樹脂原料液体７、８が樹脂原料液体案内溝４内で混合され、樹脂原料液体案内溝４に沿って発泡体が形成される。
【００２８】
【発明の効果】
本発明に係わる二種以上の樹脂原料液体の混合法及びその混合装置は、以上説明した方法であるので、混合槽を用いなくても反応により硬化する二種以上の液体を混合でき、混合装置自体の小型化を図ることができるという効果を奏し、ひいては、環境汚染を極力回避でき、廃棄物処理の軽減化、労働安全性の向上を図ることができる。更に、樹脂原料液体案内溝内で樹脂原料液体に超音波振動が与えられるので、被塗布体の溝外に樹脂原料液体が飛散するのを極力防止できるという効果を奏する。従って、樹脂原料液体案内溝の近傍間近に、成形品の一部を構成する壁面が存在する場合、樹脂原料液体がその壁面に付着するのを防止でき、成形品のクリーニング作業の工数を低減できる。また、各樹脂原料液体が飛散することなく一定の量で確実に樹脂原料液体案内溝に供給されるので、各樹脂原料液体の比率の安定化を図ることができ、樹脂の硬化具合い（発泡樹脂の場合には発泡具合い）を安定化できる。
【図面の簡単な説明】
【図１】本発明に係わる二種以上の樹脂原料液体の混合法及び混合装置の一実施例の説明図である。
【図２】本発明に係わる二種以上の樹脂原料液体の混合法に使用する各種超音波伝送用固体ホーンの形状の説明図であって、（イ）は一様断面ステップ形、（ロ）は円錐形、（ハ）はカテノイダル形を示す。
【図３】成形品に形成した樹脂原料液体案内溝の断面形状を示す図であって、（イ）は角形状、（ロ）は半円弧形状、（ハ）はＶ形状、（ニ）は上面及び底面を面取りした形状、（ホ）は底面を面取りした形状を示す。
【図４】本発明に係わる二種以上の樹脂原料液体の混合法に適用する混合装置の模式図を示す。
【図５】本発明に係わる二種以上の樹脂原料液体の混合法に適用する混合装置の概略構成を示す斜視図である。
【図６】本発明に係わる二種以上の樹脂原料液体の混合法の他の実施例の説明図である。
【符号の説明】
２…超音波伝送用固体ホーン
２ａ…先端面
３…成形品（被塗布体）
４…樹脂原料液体案内溝
５、６…給送管
５ａ、６ａ…樹脂流出口
７、８…樹脂原料液体[0001]
[Industrial application fields]
The present invention relates to a resin raw material liquid mixing method in which two or more types of resin raw material liquids that are cured by reaction are mixed using ultrasonic vibration, and an improvement of the mixing apparatus.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a mixing method and a mixing apparatus for mixing two or more kinds of liquids using ultrasonic vibration are known. For example, in Japanese Examined Patent Publication No. 62-57374, the tip of a solid horn for ultrasonic transmission is immersed shallowly in two or more liquids stored in an emulsification tank as a mixing tank, and emulsified by a cavitation effect by ultrasonic waves. In Japanese Patent Application Laid-Open No. 58-67326, the tip of a solid horn for ultrasonic transmission is soaked shallowly in two or more liquids stored in an emulsification tank as a mixing tank communicating with the atmosphere. It is disclosed that the emulsification is caused by the cavitation effect. Japanese Patent Laid-Open No. 64-38132 discloses that a two-component adhesive as a resin raw material liquid is stored in a storage tank as a mixing tank and mixed by ultrasonic waves. Japanese Laid-Open Patent Publication No. 5-49999 discloses that a dispersed phase liquid and a continuous phase liquid are mixed using ultrasonic waves in a cylinder as a mixing tank. Prepare a mixing cup, place a conical horn in the center of the mixing cup, and let the resin outlet of the conduit as the feed pipe for the resin raw material liquid face the side skin surface of the ultrasonic transmission solid horn, adhesive The resin raw material liquid is discharged from the resin outlet to the side skin surface, is transmitted along the side skin surface of the ultrasonic transmission solid horn, is guided to the tip, and the adhesive contacting the ultrasonic transmission solid horn is rotated. Stirring and mixing can be It is. In Japanese Patent Laid-Open No. 5-1688889, a solid horn for ultrasonic transmission is installed in a guide tube serving as a mixing tank, and a first liquid and a second liquid are directed toward the front end surface of the solid horn for ultrasonic transmission. And mixing the first liquid and the second liquid by applying ultrasonic vibration to the first liquid and the second liquid is disclosed in JP-A-6-57229. Discloses a stirring and mixing method in which two or more kinds of adhesives are placed in a stirring tank as a mixing tank and mixed by applying ultrasonic waves while mechanically stirring.
[0003]
As described above, the conventional liquid mixing method using ultrasonic vibration and the mixing apparatus thereof employ a method of mixing two or more liquids in a mixing tank.
[0004]
In addition, although not mixing by ultrasonic vibration, in Japanese Patent Laid-Open No. 61-118124, a mixing member having a semicircular cross section is installed obliquely, and a high-viscosity liquid and a low-viscosity liquid are placed on the mixing member. Japanese Patent Application Laid-Open No. 3-217223 discloses that a flow path member is caused to resonate and vibrate by a vibration generator. In addition, it is disclosed that mixing of a molding material made of a colorant, a plastic material, an additive, or the like is attempted in the flow path of the flow path member.
[0005]
[Problems to be solved by the invention]
By the way, some of the two or more types of resin raw material liquids are cured by reacting. However, if these two or more types of resin raw material liquids are mixed in a mixing tank, they are cured as the resin raw material liquids are mixed. Continuous operation to feed and discharge the mixed resin in the progress of the curing reaction from the mixing tank to the downstream side while replenishing two or more kinds of resin raw material liquids that are cured by reacting and reacting in the mixing tank If the work is performed intermittently at short time intervals, the curing reaction proceeds in the mixing tank even during the work stoppage time. Such a problem occurs that the cured resin adheres to the liquid or the composition of two or more kinds of resin raw material liquids present in the mixing tank changes. Therefore, the inside of the mixing tank is cleaned with a solvent every time or at an appropriate number of times immediately after the operation is interrupted or stopped, or immediately before the start of the operation. The use of the solvent is from the viewpoint of occupational safety and environmental pollution. It should be avoided as much as possible. In addition, when starting work immediately after cleaning, there is a concern that the solvent may be mixed, and it is necessary to perform empty discharge in consideration of the composition variation of the resin raw material liquid, from the viewpoint of waste treatment. Is also not preferred. Further, since a cleaning device or the like must be prepared, there is a problem that the mixing device itself is increased in size.
[0006]
Then, the objective of this invention is providing the mixing method or its mixing device which mixes two or more types of liquids hardened | cured by reaction, without using a mixing tank.
[0007]
[Means for Solving the Problems]
The method of mixing two or more kinds of resin raw material liquids according to claims 1 and 8 of the present invention and the mixing apparatus thereof are a resin for each feed pipe that feeds two or more kinds of resin raw material liquids that are cured by reaction. The outlet and the tip of the ultrasonic transmission solid horn are positioned close to each other, and two or more kinds of resin raw material liquids are simultaneously flowed out along the resin raw material liquid guide groove formed in the coated body. While moving the resin outlet of each feeding pipe, the resin outlet of each of the feeding pipes is brought into contact with the resin raw material liquid immediately after flowing out of the solid body for ultrasonic transmission to the coated body. Each resin raw material liquid is mixed by applying ultrasonic vibration to the resin raw material liquid while following the movement of the resin.
[0010]
In the method for mixing two or more kinds of resin raw material liquids and the mixing apparatus according to claims 2 and 9 of the present invention, the tip of the solid horn for ultrasonic transmission is inserted into the resin raw material liquid guide groove. It is characterized by that.
[0011]
The method of mixing two or more kinds of resin raw material liquids according to claims 3 and 10 of the present invention and the mixing apparatus thereof are a resin for each feed pipe that feeds two or more kinds of resin raw material liquids that are cured by reaction. Two or more kinds of resins can be obtained by moving the resin outlets so that the outlets are positioned apart from each other, and the tip of the solid horn for ultrasonic transmission is positioned apart from the resin outlets. One end of the raw material liquid is caused to flow out along the resin raw material liquid guide groove formed on the coated body in advance and the remaining resin raw material liquid is allowed to flow out in accordance with the flow, and the tip of the ultrasonic transmission solid horn Each resin raw material liquid by applying ultrasonic vibration to the resin raw material liquid while contacting the resin raw material liquid that has flowed out to the coated body and following the movement of the resin outlet of each feeding pipe It is characterized by mixing.
[0012]
In the method for mixing two or more kinds of resin raw material liquids and the mixing apparatus thereof according to claims 4 and 11 of the present invention, at least one kind of resin raw material liquids among the two or more kinds of resin raw material liquids is applied to the object to be coated. The supply amount of the other type of resin raw material liquid is larger than the supply amount of the object to be coated, and the other type of resin raw material liquid is supplied on the one type of resin raw material liquid. It is characterized by.
[0013]
The method for mixing two or more types of resin raw material liquids and the mixing apparatus thereof according to claims 5 and 12 of the present invention are directed to at least one type of resin raw material liquid of the two or more types of resin raw material liquids to be applied. The adhesion force is smaller than the adhesion of the other type of resin raw material liquid to the coated body, and the other type of resin raw material liquid is supplied on the one type of resin raw material liquid. .
[0014]
In the method for mixing two or more types of resin raw material liquids and the mixing apparatus thereof according to claims 6 and 13 of the present invention, the amount of the one type of resin raw material liquid supplied to the coated body is the other type of resin. The amount of the raw material liquid is larger than the supply amount to the object to be coated.
[0015]
The mixing method and the mixing apparatus for two or more kinds of resin raw material liquids according to claims 7 and 14 of the present invention are characterized in that the flow rates of the two or more kinds of resin raw material liquids are substantially equal.
[0016]
According to the method for mixing two or more kinds of resin raw material liquids and the mixing apparatus thereof according to the present invention, after two or more kinds of resin raw material liquids flow out into the resin raw material liquid guide grooves, two kinds are used by the ultrasonic transmission solid horn. Ultrasonic vibration is applied to the above resin raw material liquid, and two or more kinds of resin raw material liquids are mixed in the resin raw material liquid guide groove. Therefore, the mixing tank of the resin raw material liquid is unnecessary. Moreover, since ultrasonic vibration is given to the resin raw material liquid in the resin raw material liquid guide groove, it is possible to prevent the resin raw material liquid from scattering outside the groove of the coated body as much as possible.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a method for mixing two or more kinds of resin raw material liquids and a mixing apparatus thereof according to the present invention will be described with reference to FIGS.
[0018]
(Example 1)
1 to 3 show an embodiment of a mixing method and a mixing apparatus for resin raw material liquid according to the present invention. In FIG. 1, 1 is a vibrator as an electroacoustic transducer, and 2 is a solid horn for ultrasonic transmission. Reference numeral 3 denotes a molded product as an object to be coated, 4 denotes a resin raw material liquid guide groove formed in the molded product 3, and 5 and 6 denote feeding pipes. The ultrasonic transmission solid horn 2 is formed with a screw hole and fixed to the mechanical terminal 1a of the vibrator 1 by welding, brazing, or screw joining. Although a processing tool may be attached to the front end surface 2a of the solid horn 2 for ultrasonic transmission, the processing tool is not used here. The solid horn 2 for ultrasonic transmission shown in FIG. 1 has an exponential shape on the side skin surface 2b, but the side skin surface 2b has a uniform cross section as shown in FIG. Any of a step shape, a conical shape as shown in FIG. 2B, and a catenoidal shape as shown in FIG. The molded product 3 is produced using, for example, an ABS resin material or a PC material.
[0019]
In this embodiment, the resin raw material liquid guide groove 4 has a width and a depth of 3 mm. The feed pipes 5 and 6 are used to feed two kinds of resin raw material liquids 7 and 8. Here, the resin raw material liquids 7 and 8 are liquid flow type in the middle of the reaction of the two-component mixed foam curable urethane resin of Inoac Corporation, and the composition of the two-component mixed foam curable urethane resin is polyol and isocyanate. And is mixed in a proportion of 100 to 30 parts by weight of polyol as a main component and 20 to 30 parts by weight of isocyanate as an auxiliary. This two-component mixed foam curable urethane resin is foam-cured by a foaming reaction that generates carbon dioxide gas by the urea bond between isocyanate and water by mixing and a polymerization reaction that is cured by the urethane bond between isocyanate and polyol. Is. The expansion ratio here is about 5 times. In addition, a catalyst, a foam stabilizer, a propellant, or the like may be mixed in advance in these resin raw material liquids, or may be supplied as a third liquid when these resin raw material liquids 7 and 8 are mixed.
[0020]
The inner diameter of the feeding pipe 6 is larger than the inner diameter of the feeding pipe 5. This is because the amount of polyol supplied is larger than the amount of isocyanate supplied, and the flow rates are almost equal. The resin outlets 5a and 6a of the feed pipes 5 and 6 are positioned close to each other in the resin raw material liquid guide groove 4, and two or more kinds of resin raw material liquids 7 and 8 flow out simultaneously into the resin raw material liquid guide groove 4. Is done. Resin having a large supply amount because the supply amount of the resin raw material liquid 8 (polyol) fed by the feed pipe 6 is large and the supply amount of the resin raw material liquid 7 (isocyanate) fed by the feed pipe 5 is small. It is desirable that the resin raw material liquid 7 with a small supply amount is placed on the raw material liquid 8 and mixed from the viewpoint of smooth mixing. Further, since the adhesive force of the resin raw material liquid 8 to the molded product 3 is smaller than the adhesive force of the resin raw material liquid 7 to the molded product 3, the resin raw material liquid 7 is placed on the resin raw material liquid 8 and mixed from this viewpoint. Is desirable. The depth to the groove bottom 4a of the outflow resin raw material liquids 7 and 8 immediately after flowing into the resin raw material liquid guide groove 4 is about 2 mm. The tip surface 2a of the ultrasonic transmission solid horn 2 is positioned at a predetermined height from the groove bottom 4a (a height of about 1 mm from the groove bottom 4a), and the side skin surface 2b of the ultrasonic transmission solid horn 2 is a groove wall. It is located at a predetermined interval from the groove wall 4b so as not to contact 4b. The vibrator 1 is provided with a support flange 1c, and the tips of the feed pipes 5 and 6 are fixed to the support flange 1c.
[0021]
The front ends 5 a and 6 a of the feed pipes 5 and 6 are transferred relative to the molded product 3 along the resin raw material liquid guide groove 4. The tip of the ultrasonic transmission solid horn 2 is positioned immediately after the traveling direction of the resin outlets 5a and 6a, and the tip surface 2a of the ultrasonic transmission solid horn 2 is in the resin raw material liquid guide groove 4. The resin raw material liquids 7 and 8 that have flowed out are in contact with each other. The ultrasonic transmission solid horn 2 follows the feed pipes 5 and 6 along the resin raw material liquid guide groove 4, and the resin raw material liquids 7 and 8 are ultrasonicated at the same time or immediately after flowing into the resin raw material liquid guide groove 4. Vibration is applied and mixed in the resin raw material liquid guide groove 4, and a foam is formed along the resin raw material liquid guide groove 4.
[0022]
The cross-sectional shape of the resin raw material liquid guide groove 4 is a square shape as shown in FIG. 3 (a), a semicircular shape as shown in FIG. 3 (b), a V shape as shown in FIG. As shown in FIG. 3 (d), the shape may be any of a shape with a chamfered upper surface and a bottom surface, and a shape with a chamfered bottom surface as shown in FIG.
[0023]
(Example 2)
FIG. 4 is a schematic view of a mixing apparatus applied to a mixing method of two or more kinds of resin raw material liquids according to the present invention, and FIG. 5 is a mixing apparatus applied to a mixing method of two or more kinds of resin raw material liquids according to the present invention. 4 is a perspective view showing the general configuration of FIG. 4, in which 11 is an overall control device, 12 is a temperature adjusting device, 13 is hot water, 14 is a container for storing the first resin raw material liquid 7, and 16 is a second A container for storing the resin raw material liquid 8, 18 and 19 are motors for stirring the resin raw material liquids 7 and 8, and 20 is a feed control device for feeding the resin raw material liquids 7 and 8 to the feed pipes 5 and 6, 21. Is a high frequency power supply control device, 22 is a movement control device, 23 is an X direction moving mechanism, 24 is a Y direction moving mechanism, 25 and 26 are bevel gears (spur gears in FIG. 5), and 27 is a drive motor. The overall control device 11 plays a role of comprehensively controlling the temperature adjustment device 12, the feeding control device 20, the high frequency power supply control device 21, and the movement control device 22.
[0024]
The vibrator 1 generates ultrasonic vibrations with a predetermined oscillation frequency and amplitude by a high frequency power supply control device 21, and the feed control device 20 includes a micro gear pump composed of a servo motor or a pal motor, and discharges based on a command from the overall control device 11. ON / OFF, the discharge amount, and the discharge ratio of the resin raw material liquids 7 and 8 are adjusted. In the embodiment of the present invention, the discharge amount of the resin raw material liquid 8 is, for example, 210 mg / s, and the discharge amount of the resin raw material liquid 7 is, for example, 60 mg / s. It is desirable to shorten the length of the feed pipes 5 and 6 as much as possible in order to avoid fluctuations in the internal volume due to internal pressure, and to reduce the foaming rate and the dimensional variation of the foam after the resin raw material liquid is cured. The temperature adjusting device 12 makes the temperature of the resin raw material liquids 7 and 8 constant (for example, 30 degrees) from the viewpoint of avoiding changes in viscosity and specific gravity due to temperature changes of the resin raw material liquids 7 and 8 and stabilizing the reaction rate. c). In addition to driving and controlling the XY moving mechanisms 23 and 24, the movement control device 22 also has a role of driving and controlling the ultrasonic transmission solid horn 2 in the vertical direction (Z-axis direction) as shown in FIG. , It plays a role of determining the position (r direction) in the circumferential direction of the side skin surface 3b with respect to the feeding pipes 5 and 6.
[0025]
The molded product 3 is a flanged cylinder as shown in FIG. 5, for example, and the resin raw material liquid guide groove 4 is formed of an annular groove formed around the cylindrical base. The molded product 3 is mounted on the XY moving mechanisms 23 and 24 and is moved relative to the ultrasonic transmission solid horn 2, and its tip 2 a is traced along the resin raw material liquid guide groove 4. . Unlike the normal assembly robot movement control mechanism that requires point-to-point positioning accuracy, the XY movement mechanisms 23 and 24 are important for the accuracy of the movement trajectory and the accuracy of the movement speed. It is desirable to use a mechanism similar to an industrial robot.
[0026]
(Example 3)
FIG. 6 shows another example of the mixing method and mixing apparatus for two or more kinds of resin raw material liquids according to the present invention, and the tip of the solid horn 2 for ultrasonic transmission and the resin outlets 5a of the feed pipes 5 and 6. , 6a are located in the resin raw material liquid guide groove 4 of the molded product 3, and the resin outlets 5a, 6a are separated from each other in the direction in which the resin raw material liquid guide groove 4 extends. Here, one resin raw material liquid (polyol) 8 flows out into the resin raw material liquid guide groove 4 first, and the other resin raw material liquid (isocyanate) 7 flows out into the resin raw material liquid guide groove 4 later. The depth to the groove bottom 4a of the spilled resin raw material liquids 7 and 8 immediately after flowing out to the resin raw material liquid guide groove 4 is about 2 mm, and the tip end surface 2a of the ultrasonic transmission solid horn 2 extends from the groove bottom 4a. The height is about 1 mm, and the tip of the ultrasonic transmission solid horn 2 is provided away from the feed pipe 5 in the direction along the resin raw material liquid guide groove 4.
[0027]
By moving the resin outlets 5a and 6a of the respective feed pipes 5 and 6 along the resin raw material liquid guide groove, the resin raw material liquid 8 flows out into the resin raw material liquid guide groove 4 in advance, and the resin raw material liquid 7 Flows out following the resin raw material liquid guide groove 4. The tip of the ultrasonic transmission solid horn 2 is brought into contact with the resin raw material liquids 7 and 8 that have flowed out into the resin raw material liquid guide groove 4, and the resin raw material liquid guides are given ultrasonic vibrations to the resin raw material liquids 7 and 8. Followed along the groove 4. As a result, the resin raw material liquids 7 and 8 are mixed in the resin raw material liquid guide groove 4, and a foam is formed along the resin raw material liquid guide groove 4.
[0028]
【The invention's effect】
Since the mixing method of two or more kinds of resin raw materials and the mixing apparatus thereof according to the present invention are the methods described above, two or more kinds of liquids cured by reaction can be mixed without using a mixing tank. As a result, it is possible to reduce the size of the device itself. As a result, environmental pollution can be avoided as much as possible, waste treatment can be reduced, and occupational safety can be improved. Furthermore, since the ultrasonic vibration is applied to the resin raw material liquid in the resin raw material liquid guide groove, it is possible to prevent the resin raw material liquid from scattering outside the groove of the coated body as much as possible. Therefore, when a wall surface that constitutes a part of the molded product exists near the resin raw material liquid guide groove, the resin raw material liquid can be prevented from adhering to the wall surface, and the number of man-hours for cleaning the molded product can be reduced. . In addition, since each resin raw material liquid is reliably supplied to the resin raw material liquid guide groove in a fixed amount without scattering, the ratio of each resin raw material liquid can be stabilized, and the resin curing condition (foamed resin) In this case, the foaming condition) can be stabilized.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an embodiment of a mixing method and a mixing apparatus for two or more kinds of resin raw material liquids according to the present invention.
FIGS. 2A and 2B are explanatory views of the shapes of various ultrasonic transmission solid horns used in the method of mixing two or more resin raw material liquids according to the present invention, wherein FIG. Indicates a conical shape, and (C) indicates a catenoidal shape.
FIG. 3 is a diagram showing a cross-sectional shape of a resin raw material liquid guide groove formed in a molded product, in which (A) is a square shape, (B) is a semicircular arc shape, (C) is a V shape, and (D) is A shape in which the top surface and the bottom surface are chamfered, and (e) indicates a shape in which the bottom surface is chamfered.
FIG. 4 is a schematic diagram of a mixing apparatus applied to a method for mixing two or more kinds of resin raw material liquids according to the present invention.
FIG. 5 is a perspective view showing a schematic configuration of a mixing apparatus applied to a method for mixing two or more kinds of resin raw material liquids according to the present invention.
FIG. 6 is an explanatory diagram of another embodiment of a method for mixing two or more kinds of resin raw material liquids according to the present invention.
[Explanation of symbols]
2 ... Solid horn 2a for ultrasonic transmission ... Tip surface 3 ... Molded product (object to be coated)
4 ... Resin raw material liquid guide grooves 5, 6 ... Feed pipes 5a, 6a ... Resin outlets 7, 8 ... Resin raw material liquid

Claims

The resin outlet of each feed pipe that feeds two or more kinds of resin raw material liquids that harden by reaction and the tip of the solid horn for ultrasonic transmission are located close to each other and formed on the object to be coated. In the resin raw material liquid guide groove, two or more kinds of resin raw material liquids are simultaneously flowed along the same while moving the resin outlet of each feeding pipe, and the tip of the ultrasonic transmission solid horn is coated. Two types of mixing each resin raw material liquid by applying ultrasonic vibration to the resin raw material liquid while following the movement of the resin outlet of each of the feeding pipes while contacting the resin raw material liquid immediately after flowing into the body The above mixing method of resin raw material liquid.

The method for mixing two or more kinds of resin raw material liquids according to claim 1 , wherein a tip of the solid horn for ultrasonic transmission is inserted into the resin raw material liquid guide groove.

Resin outlets of the feed pipes for feeding two or more kinds of resin raw material liquids that are cured by reacting are positioned apart from each other, and the tip of the ultrasonic transmission solid horn is the resin outlet By moving each resin outlet, one of the two or more kinds of resin raw material liquids flows in advance in the resin raw material liquid guide groove formed in the coated body in advance. The remaining resin raw material liquid is made to follow and flow out, and the tip of the solid horn for ultrasonic transmission is brought into contact with the resin raw material liquid flowed out to the coated body, and the resin outlet of each of the feeding pipes A method of mixing two or more kinds of resin raw material liquids, wherein the resin raw material liquids are mixed by applying ultrasonic vibration to the resin raw material liquids while following the movement of the resin.

Of the two or more kinds of resin raw material liquids, the supply amount of at least one kind of resin raw material liquid to the coated body is larger than the supply amount of the other types of resin raw material liquids to the coated body, 4. The method for mixing two or more kinds of resin raw material liquids according to claim 3 , wherein the other types of resin raw material liquids are supplied on top of different types of resin raw material liquids.

Of the two or more kinds of resin raw material liquids, the adhesion force of at least one kind of resin raw material liquid to the coated body is smaller than the adhesion of other types of resin raw material liquids to the coated body, and the one kind of resin raw material The method for mixing two or more kinds of resin raw material liquids according to claim 3 , wherein the other kinds of resin raw material liquids are supplied on a liquid.

6. The two types according to claim 5 , wherein a supply amount of the one type of resin raw material liquid to the coated body is larger than a supply amount of the other type of resin raw material liquid to the coated body. The above mixing method of resin raw material liquid.

The method for mixing two or more resin raw material liquids according to claim 3 , wherein the flow rates of the two or more resin raw material liquids are substantially equal.

The resin outlet of each feed pipe that feeds two or more kinds of resin raw material liquids that harden by reaction and the tip of the solid horn for ultrasonic transmission are located close to each other and formed on the object to be coated. In the resin raw material liquid guide groove, two or more kinds of resin raw material liquids are simultaneously flowed along the same while moving the resin outlet of each feeding pipe, and the tip of the ultrasonic transmission solid horn is coated. Each resin raw material liquid is mixed by applying ultrasonic vibration to the resin raw material liquid while being brought into contact with the resin raw material liquid immediately after flowing into the body and following the movement of the resin outlet of each of the feeding pipes. Mixing device for more than seed resin liquid.

The apparatus for mixing two or more kinds of resin raw material liquids according to claim 8, wherein a tip of the solid horn for ultrasonic transmission is inserted into the resin raw material liquid guide groove.

Resin outlets of the feed pipes for feeding two or more kinds of resin raw material liquids that are cured by reacting are positioned apart from each other, and the tip of the ultrasonic transmission solid horn is the resin outlet By moving each resin outlet, one of the two or more kinds of resin raw material liquids flows in advance in the resin raw material liquid guide groove formed in the coated body in advance. The remaining resin raw material liquid is made to follow and flow out, and the tip portion of the ultrasonic transmission solid horn is brought into contact with the resin raw material liquid flowed out to the coated body, and the resin outlet of each of the feeding pipes An apparatus for mixing two or more types of resin raw material liquids that mix each resin raw material liquid by applying ultrasonic vibration to the resin raw material liquid while following the above.

Of the two or more kinds of resin raw material liquids, the supply amount of at least one kind of resin raw material liquid to the coated body is larger than the supply amount of the other types of resin raw material liquids to the coated body, The apparatus for mixing two or more kinds of resin raw material liquids according to claim 10, wherein the other types of resin raw material liquids are supplied on the resin raw material liquids of different types.

Of the two or more kinds of resin raw material liquids, the adhesion force of at least one kind of resin raw material liquid to the coated body is smaller than the adhesion of other types of resin raw material liquids to the coated body, and the one kind of resin raw material The apparatus for mixing two or more types of resin raw material liquid according to claim 11 , wherein the other type of resin raw material liquid is supplied on a liquid.

13. The two types according to claim 12 , wherein a supply amount of the one type of resin raw material liquid to the coated body is larger than a supply amount of the other type of resin raw material liquid to the coated body. The above resin raw material liquid mixing apparatus.

The mixing device for two or more kinds of resin raw material liquids according to claim 10 , wherein the flow rates of the two or more kinds of resin raw material liquids are substantially equal.