JP3857003B2

JP3857003B2 - Support structure for resin molded parts with vibration welding

Info

Publication number: JP3857003B2
Application number: JP33329999A
Authority: JP
Inventors: 政弘橋口; 義明中川; 正訓西野; 俊郎川東
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1999-11-24
Filing date: 1999-11-24
Publication date: 2006-12-13
Anticipated expiration: 2019-11-24
Also published as: JP2001150550A

Description

【０００１】
【発明の属する技術分野】
本発明は、第１と第２の樹脂成形品を振動溶着手法で製作する際に、振動側の樹脂成形品の振動溶着する部分を、振動溶着機の支持治具に支持する構造に関する。
【０００２】
【従来の技術】
樹脂成形品相互を突合せ、一方を固定側とし、他方を振動側とし、樹脂成形品相互の突合せ部分を治具で押え、振動溶着するようにした振動溶着法は、従来から実用に供されている。
溶着部相互を突き合せ、各溶着部の上面及び下面に治具を当てがい、各溶着部を上下から押圧して圧接して挟持し、一方の治具を振動させ、溶着する際、振動側の樹脂部材を振動させることで、振動側の溶着部が固定側に対してズレたりする虞がある。
この結果、振動溶着した部分に溶着不良が発生し、剥がれたり、剥がれ易くなったりして所定の溶着強度が得られなかったり、又溶着位置が溶着面でズレたりし、溶着部の位置精度が不良となる場合がある。
【０００３】
従来の▲１▼実開平６−２９２９１号公報の技術は上記したズレの防止対策として好ましい。
上記▲１▼は、スピーカーボックスのような合成樹脂成形品の組立構造に係り、ここで開示されている構成は、溶着する一対の樹脂製の部材の周縁部の夫々に、溶着部分である取付代を設け、一方の部材の取付代の上面には、外側部、両側部に高さが等しいリブを、該上面を囲橈するように設けて深穴状部分を形成し、他方の部材の取付代は平坦とする。
一方の部材の平坦な取付代の下面に一方の治具の先端部を当てがい、他方の部材の取付代の均等な高さのリブにより囲まれた深穴状部分内に、他方の治具を挿入し、該治具の先端部を深穴状部分の上底に当てがい、取付代を押圧しつつ、振動溶着するものである。
【０００４】
又従来の▲２▼特開平１１−３４１６９号公報の技術も、上記したズレの防止対策として好ましい。
上記▲２▼は、振動溶着装置及び振動溶着方法に係り、ここで開示されている構成は、一対の樹脂部材の周縁部に溶着部を設け、一方の溶着部の突き合せ面に凹溝を設け、一方の溶着部の突き合せ面に凸部を設け、これ等の溶着部の凹溝と凸部を係合し、溶着部の外面（一方の上面及び他方の外底面）にリブを設け、上下に配置した治具の先端部をリブに係合して押圧し、振動溶着するものである。
【０００５】
【発明が解決しようとする課題】
以上の▲１▼の従来技術は、治具が振動する際、深穴状のリブ内に治具が挿入されているので、治具とリブとが係合し、位置ズレは防止することができ、従って、溶着不良の防止及び位置精度の確保の点で好ましい。
しかしながら、リブは外側部、両側部が等しい高さで突出量が大きく、深穴状なので、この側の樹脂部材を治具に係合する際、又離脱する際、治具を備える型へのセットのストローク、離型のストロークが必然的に大きくなる。
特に、樹脂成形部材からなるパネル状のインストルメントパネルの裏面に、少なくとも一部に凹状部あるいは空洞部を備える樹脂部材を振動溶着方法で溶着する場合には、インストルメントパネル及び裏面の樹脂部材は長大であり、上記した不具合は顕著となる。
この結果、振動溶着機の外形が大きくなり、又型の上下動機構が大型する虞があり、又作業上においては、溶着製品の取り出しが難しくなる虞がある。
【０００６】
上記▲２▼の従来技術は、裏面に少なくとも一部に凹状あるいは空洞部を有するダクトを備える車両のインストルメントパネルの溶着においては、上記▲１▼と同様の不具合があり、又この結果、上記▲１▼と同様に振動溶着機の外形が大きくなり、又型の上下動機構が大型化する虞があり、又作業上においては、溶着製品の取り出しが難しくなる虞がある。
又上下の樹脂部材の夫々の溶着部に、夫々リブを設ける必要があるので、溶着部の構造が複雑化し、裏面に少なくとも一部に凹状部或いは空洞部を有するダクトを内装する車両のインストルメントパネルのように、溶着した二部材の一方が表面に現れ、且つ表面形状の美観が要求される樹脂製品では、採用し難い。
【０００７】
本発明は、裏面に少なくとも一部に凹状部或いは空洞部を有するダクトを内装した車両のインストルメントパネルのような樹脂成形品を振動溶着する際に、型で支持される固定側の樹脂部材に対し、振動溶着機に治具を介して支持される振動側の樹脂部材の支持部を、振動する治具に対して位置ズレを起こすことなく係合して確実に支持し、溶着部の溶着強度を所定のものに保持し、且つ位置精度を正確に保持することを可能とした振動溶着する樹脂成形品の支持構造を提供することを目的とする。
特に本発明は、支持治具で振動側の溶着部（支持部）を係合支持しつつ、振動方向への係合支持を確実に行わせ、溶着後における固定側の型の上下方向のストロークを可及的に小さくし、又治具からの溶着品の取り出しストロークを最少とし、取出機構の簡素化を図り、溶着品の抜き、取り出し作業を容易化することを可能とした振動溶着する樹脂成形品の支持構造を提供することを目的とする。
【０００８】
【課題を解決するための手段】
上記課題を解決するために請求項１は、第１の樹脂成形品と、第２の樹脂成形品とからなり、第１あるいは第２の樹脂成形品のどちらかに、振動溶着機の支持治具で支持する複数の取付脚部を備え、一方の樹脂成形品を振動させて他方の樹脂成形品に前記取付脚部を溶着するようにした樹脂成形品であって、前記どちらかの樹脂成形品に設けた取付脚部の端面に振動方向と直交する溶着用凸部を設け、前記取付脚部の少なくとも一部（８）の端面であって、前記支持具側の方向には、前記支持治具と係合するリブ（８４）を設け、
前記リブ（８４）は、振動方向且つ樹脂製品の取出し方向に直交する方向に設けた補強用リブ（８６）と、振動方向に対し直交する方向且つ樹脂製品の取出し方向に設けられ、該補強用リブ（８６）よりも長いズレ防止用リブ（８５）とで構成したことを特徴とする。
【０００９】
請求項１では、一方の樹脂成形品の溶着部である取付脚部（８）に設けたリブ８４）に、振動溶着機の支持治具が係合し、長いズレ防止用リブ（８５）で、振動する支持治具を振動方向に係合するので、取付脚部は支持治具に対して振動時にスリップしたり、ズレたりすることがなく、第１の樹脂成形品と、第２の樹脂成形品とを、正確に、所定の強度を保持して、位置精度を高精度に保持して振動溶着することができる。
又振動方向に補強用リブ（８６）を設けたので、ズレ防止用リブを含むリブ（８５）の剛性を高めることができ、補強用リブ（８６）は、ズレ防止用リブ（８５）よりも短く、突出量が小さいので、前記リブ（８４）付き取付脚部（８）を有する樹脂成形品の振動溶着機へのセットが容易であり、溶着後における溶着品の上方への取り出しストロークも小さなもので足り、溶着品の取出作業が容易であり、溶着品の取出機構も簡素なもので足り、トータルとして振動溶着機の小型化をも図ることができる。
更に、取付脚部（８）は、二つの樹脂成形品の一方のみに設けたので、他方の溶着部にリブが突出することがなく、外観性を必要とする裏面に少なくとも一部に凹状部あるいは空洞部を有したダクトを内装したインストルメントパネルのような樹脂成形品の振動溶着に好ましい。
【００１０】
【発明の実施の形態】
本発明の実施の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。
図１は、振動溶着する第２の樹脂成形品の平面図である。
本実施の形態では、パネル状の第１の樹脂成形品は車両のインストルメントパネルであり、第２の樹脂成形品はインストルメントパネルの裏面に溶着されるエアコンダクトである。
【００１１】
図１は、第２の樹脂成形品であるエアコンダクト１の平面図で、該エアコンダクト１を実線で表し、これの上面に溶着される第１の樹脂成形品であるインストルメントパネル１０を鎖線で表した。
エアコンダクト１は、ポリプロピレン、ＡＢＳ、ポリカーボネイト（ＰＣ）、ＰＥ、ナイロン等の熱可塑性樹脂で、例えば、射出成形やブロー成形等の手法で成形され、左右方向に長さが長く、上下方向の長さが短い。
エアコンダクト１には、インストルメントパネル１０と溶着することで、後に中央部のエアコンダクトを形成する中央部の凹部２、これの左右に、上下に設けられ、インストルメントパネル１０と溶着することで、後に上下に区画される左右のエアコンダクトを形成する左右、上下の凹部３，３、４，４、上部に長さ方向に設けられ、インストルメントパネル１０と溶着することで、後に長いスロット状のデフロスタ用の吹出し口を形成する左右の凹部５，５等を備える。又エアコンダクト１には、一部に空洞部を設けている。
【００１２】
以上では凹部として説明したが、前記したエアコンダクトに形成した凹部２，３，４及び５の夫々を、空洞部として形成したダクトとし、取付脚部を介してインストルメントパネルに振動溶着しても良いことは勿論である。又前記したエアコンダクトに形成した凹部２，３，４及び５の内のいずれか１箇所、或いは複数箇所を空洞部とし、１箇所あるいは複数箇所を凹部として形成したダクトとし、取付脚部を介してインストルメントパネルに振動溶着しても良いことも勿論である。
【００１３】
以上のエアコンダクト１の図の左側端部には、インストルメントパネル１０の接合面と溶着する溶着部を構成する取付脚部６を長さ方向の外側に突出するように、一体に設ける。
又上記した上部の凹部２，３，４，５の周辺部には、同様の取付脚部７…（…は複数を表す。以下同じ）を一体に設ける。取付脚部７…は、部位によって長短がある。
【００１４】
実施の形態では、右側の下部の凹部４の右側端部の図の下方への屈曲部４ａは、左側のものよりも下方に延長して形成され、延長部４ｂの基部で、屈曲部４ａとの境界部の外側に、外側方に突出する取付脚部８を一体に設ける。
該取付脚部８は、図１の平面図で明らかなように、他の取付脚部６，７…に比較し面積が小さい。従って、溶着面積が小さい。
【００１５】
ところで、鎖線で示したインストルメントパネル１０の裏面に配置したエアコンダクト１は、取付脚部６，７…，８をインストルメントパネル１０裏面の接合面に突き当て、インストルメントパネル１０を固定側とし、エンコンダクト１を振動機にセットし、エンコンダクト１を図の矢印(a)で示す左右方向に振動させ、振動溶着するものである。
【００１６】
図２は、図１の２−２線断面図である。
取付脚部７は、上方に膨出した断面が略々逆Ｕ字形で、エアコンダクト１の基板１ａと一体に設けられ、上方の膨出した取付脚部７の中央部には、上方に凸部７ａを一体に設け、凸部７ａの上端面がインストルメントパネル１０の裏面に接合面に当接する。
取付脚部７の下面を振動機の支持治具２８…で支持し、紙面表裏方向にエアコンダクト１を支持治具２８…を介して振動させ、インストルメントパネル１０を固定側とし、エアコンダクト１のこの部分をインストルメントパネル１０に振動溶着する。
【００１７】
図３は、図１の３−３線断面図である。
取付脚部８は、前記したように一方の凹部４の屈曲部４ａと延長部４ｂとの境界部の外側方に突出するように一体に設けられ、凹部４のこの部分の上端部に外側方に屈曲して突出するように設けられている。
取付脚部８は、起立した壁片４ｃの上端部から、実施の形態では直角に外方に延びる頂片部８１を備え、頂片部８１の上面の中央部にインストルメントパネル１０裏面の接合面と当接する凸部８２を備え、凸部８２の上端面８３がインストルメントパネル１０裏面の接合面と当接する。
【００１８】
上記した取付脚部８は、図で明示したように断面が略々逆Ｕ字形で、図１で明示したように、上下方向の長さが、他の取付脚部に比較して短い。
取付脚部８の逆Ｕ字形の部分に振動溶着機の支持治具の先端部を係合し、該取付脚部８の下面を該支持治具で支持し、図の矢印(a)で示す左右方向にエアコンダクト１を支持治具２８を介して振動させ、インストルメントパネル１０を固定側とし、エアコンダクト１のこの部分をインストルメントパネル１０に振動溶着する。
【００１９】
図４は、上記した取付脚部８の斜視図である。
取付脚部８は、頂片部８１にリブ８４を備え、リブ８４は、頂片部８１の外端部から略々直角に垂下したズレ防止用リブ８５と、該ズレ防止用リブ８５の両側と、壁片４ｃの上部と、頂片部８１の両側とを一体に繋ぐ左右の補強用リブ８６，８６とからなり、これ等のリブ８５，８６，８６は、取付脚部８の上記した部分に一体に形成する。
ズレ防止用リブ８５は、振動方向に対して直交する方向に設けられ、且つ図６の左右方向であるインストルメントパネル（樹脂製品）の抜き出し方向（取り出し方向）と一致する向きに設けられ、又補強用リブ８６，８６は、振動方向に設ける。
【００２０】
図５は、図４の５−５線断面図である。
取付脚部８の外端部を屈曲して垂下するように設けたズレ防止用リブ８５は、下方への突出長さをＨとし、振動溶着機の支持治具２８の上端部を壁片４ｃの外面４ｃ´と、該リブ８５の裏面８５ａとの間で係合保持するに必要且つ充分の長さとする。
又壁片４ｃの外面４ｃ´の頂部４ｄと、該リブ８５の裏面８５ａとの間隔は、支持治具２８の上端部が略々密に係合し、支持治具２８の矢印(a)で示す振動方向に対して、支持治具２８との係合を確実化するような間隔とする。
【００２１】
図６は、図４の６−６線断面図である。
取付脚部８の両側に設けた補強用リブ８６，８６は、前記したズレ防止用リブ８５よりも下方への突出長さＨ１が短く、実施の形態では、ズレ防止用リブ８５の高さＨに対し１／２、或いは１／２以下が好ましい。
補強用リブ８６，８６の下方への突出長さは、該リブ８６，８６を設けた方向が、振動方向であり、振動時におけるズレ防止作用を行なわないので、なるべく下方への突出量を小さくし、ズレ防止用リブ８５，８５を含むリブ８４の強度を所定に保持し得る程度の長さで良い。
従って、振動方向の補強用リブ８６，８６の深さが浅いものとし、支持治具２８からインストルメントパネル１０、エアコンダクト１の溶着品を上方に持上げて支持治具２８との係合を解除し、図の左右方向に抜き出す（取り出す）際、上方への持上げストロークが最少となる突出量とする。又支持治具２８に係合、セットする際に、容易に取付脚部８の係合、セットが可能な突出量とする。
【００２２】
取付脚部８に以上のようにリブ８４を設けたが、その理由は、取付脚部８の溶着面積は小さく、従って、振動溶着機の支持治具２８で、下方からインストルメントパネル１０の裏面に押圧支持しても、ズレが発生する可能性があり、この結果、溶着不良の可能性、溶着位置のズレが発生する可能性があるためであり、他の取付脚部に、このような不具合が発生する可能性がある場合には、他の取付脚部にもこのようなリブを設けても良くこのようなリブを設ける取付脚部は、実施に形態のように１ヵ所とは限らない。
【００２３】
図７は、溶着溶着機の主要部の外観斜視図である。
振動溶着機２０は、前後及び左右に対しては固定で、上下動する上部ブロック２１と、後述する下部ブロック２５とからなる。
上部ブロック２１は、インストルメントパネル１０を保持する上型２２、該上型２２を支持する支持枠２３、支持枠２３を上下動させる図示しないシリンダを備え、該シリンダと支持枠２３とは、ロッド２４で連結されている。
下部ブロック２５は、固定の基台２６、該基台２６上に載置され、エアコンダクト１を長さ方向（図１の左右方向）に振動させる振動台２７、エアコンダクト１の取付脚部を下面から支持する起立配置された支持治具２８…からなり、支持治具２８…は、取付脚部の位置に合せて複数のピースに分割されて設置されている。
【００２４】
図８〜図１０は、溶着工程を示す模式的な作用図である。
図８は、第１工程を示す図である。
基台２６にはガイドポスト２９…を四隅に起立設置し、上部ブロック２１の基枠２３の下部周辺部を係合し、上部ブロック２１の上下動を保障する。
図の左側に断面で示した部分は振動溶着機２０の外壁３０で、外壁３０内に振動溶着機２０は設置されており、外壁３０には、セット及び取り出しのための窓３１が設けられている。
【００２５】
先ず、上型２２は上昇しており、これの下面にインストルメントパネル１０をセットし、吸着、保持する。図において、２２ａ…は吸着用の抜気通路である。
これにより、上型２２の型下面にインストルメントパネル１０を保持する。
エアコンダクト１は、下部ブロック２５の振動台２７上に起立設置された前記した取付脚部６，７，８の下面に、支持治具２８…の上端部を当て、支持する。
この状態を図８で示した。
【００２６】
前記した取付脚部８においては、図４〜図６で示したように、振動溶着機の支持治具２８の上端部２８ａが、取付脚部８のズレ防止用リブ８５と壁片４ｃとの間に係合し、矢印(a)で示した振動方向に確実に係合する。
支持治具２８の上端部２８ａの左右には、前記した補強用リブ８６，８６が臨む。
支持治具２８の上端面２８ｂは、頂片部８１ａに当接する。
以上のように、取付脚部８においては、支持治具２８が、振動方向に対して係合する。
【００２７】
以上のように上型２２でインストルメントパネル１０を吸着保持し、振動台２７の支持治具２８…上にエアコンダクト１をセットして取付脚部６，７，８を支持した後、図８の矢印(b)で示すように上型２２を下降し、インストルメントパネル１０の裏面（下面）にエアコンダクト１を重ね、インストルメントパネル１０裏面の接合面とエアコンダクト１の取付脚部６，７，８の接合面である凸部とを突き合せる。
この状態を図９で示した。
【００２８】
図９は第１工程を示す図である。
図９のように、インストルメントパネル１０とエアコンダクト１とを上型２２と振動台２７の支持治具２８…間に挟持した後、振動台２７を振動させる。振動方向は、図９においては、紙面の表裏方向である。
振動による摩擦熱で、凸部を含む取付脚部６，７，８とインストルメントパネル１０裏面の接合面とは溶着する。
これにより、インストルメントパネル１０の裏面にエアコンダクト１は溶着され、一体化され、インストルメントパネル１０の裏面に「最中」状にエアコン通路が形成され、又一部の空胴部によりエアコンダクトが形成されることとなる。
【００２９】
ところで、上記した取付脚部８は、図９の紙面の表方向に配置されており、図４、図５に示すように、支持治具２８の上端部２８ａが、長さＨのズレ防止用リブ８５及び壁片４ｃの上端部間に位置しており、振動方向(a)は該リブ８５及び壁片４ｃで拘束され、振動方向に対し、取付脚部８の支持治具２８と取付脚部８との接触面にズレが発生することがない。
従って、取付脚部８の溶着面積が小さくても、支持治具２８と取付脚部８との間にズレが発生せず、支持治具２８の振動と一体に取付脚部８が振動し、インストルメントパネル１０の裏面の所定の接合面に取付脚部８は溶着不良を起こすことなく、又位置ズレを起こすことなく、適正の位置に必要とする溶着強度を確保しつつ溶着することができる。
【００３０】
図１０は、第３工程を示す図である。
インストルメントパネル１０とエアコンダクト１とを上記したように振動溶着してインストルメントパネル組立体４０を形成し、爾後、上型２２を上昇させる。
爾後、図１０では図示しない払い出し用のプッシュロッド等で、インストルメントパネル組立体４０を支持治具２８…から上方に持上げ、図の矢印(c)のように図の左方向に引き出し、窓３１から外に取り出す。
【００３１】
図１１及び図１２は、取付脚部を支持治具２８から抜き出す作用図である。図は前記した図６の方向から見た図である。
図１１で示すように、インストルメントパネル組立体４０のエアコンダクト取付脚部８を有する部分の周辺部をプッシュロッド３１を矢印(d)方向に上昇させ、これにより取付脚部８は矢印(e)で示すように上昇する。
【００３２】
図１２は、プッシュロッド３１を上昇させ、取付脚部８の両側の補強用リブ８６，８６の下端部が支持治具２８の上端面２８ｂから外れ、係合が解除された状態を示す。
爾後、この部分においては、支持治具２８から取付脚部８が外れ、矢印(f)方向に取付脚部８を含むインストルメントパネル組立体４０を取り出すことができる。
【００３３】
図４、図５に示した下方への突出量が大きいズレ防止用リブ８５は、図５の紙面表裏方向である取り出し方向に対指向しており、取り出し方向に対してはズレ防止用リブ８５は、障害とならない。
このため、取付脚部８のプッシュロッド３１による持上げ量は、突出量が小さい補強用リブ８６，８６の高さと凸部が溶着で圧潰した高さＨ２を超える高さＨ３で足りることとなる。
従って、取付脚部８の取り出しに際しての持上げ高さは小さくてすむこととなる。
この結果、溶着終了後のインストルメントパネル組立体４０の振動溶着機からの取り出しに際し、取付脚部８の部分の持上げ量が小さいので、インストルメントパネル組立体４０の端部の支持治具２８からの取り出し性が良く、又支持治具２８への取付脚部８の上からのセットも容易となる。
従って、インストルメントパネル組立体４０のセット、取り出し作業は容易なものとなる。
【００３４】
尚、実施の形態で示した取付脚部６，７，８を、インストルメントパネルパネル１０に一体に設けても良く、又エアコンダクト１を固定し、インストルメントパネル１０を振動させて振動溶着させても良い。
又インストルメントパネルのみでなく、樹脂材であるバンパー等の車両の内外装の部品や機能部品、あるいは比較的大きな建材等の振動溶着に、本発明は適用することができる。
【００３５】
【発明の効果】
本発明は上記構成により次の効果を発揮する。
請求項１は、第１の樹脂成形品と、第２の樹脂成形品とからなり、第１あるいは第２の樹脂成形品のどちらかに、振動溶着機の支持治具で支持する複数の取付脚部を備え、一方の樹脂成形品を振動させて他方の樹脂成形品に取付脚部を溶着するようにした樹脂成形品であって、どちらかの樹脂成形品に設けた取付脚部の端面に振動方向と直交する溶着用凸部を設け、取付脚部の少なくとも一部（８）の端面であって、前記支持具側の方向には、前記支持治具と係合するリブ（８４）を設け、リブ（８４）は、振動方向且つ樹脂製品の取出し方向に直交する方向に設けた補強用リブ（８６）と、振動方向に対し直交する方向且つ樹脂製品の取出し方向に設けられ、該補強用リブ（８６）よりも長いズレ防止用リブ（８５）とで構成した。
【００３６】
請求項１では、振動溶着機の支持治具で支持される一方の樹脂成形品の溶着部を構成する取付脚部（８）にリブ（８４）を設け、該リブ（８４）を振動溶着機の支持治具に係合する際、長いズレ防止用リブ（８５）で、振動する支持治具を振動方向に係合する。これにより、他方の樹脂成形品の溶着部と溶着する該取付脚部（８）は、支持治具に対して、振動時にスリップしたり、ズレたりすることがない。
従って、他方の樹脂成形品に対して正確に、一方の樹脂成形品を、所定の強度を保持し、位置精度を高精度に保持して、振動溶着することができる。
又振動方向に対し直交する方向且つ樹脂製品の取り出し方向に設けられたズレ防止用リブ（８５）に対して、振動方向且つ樹脂製品の取り出し方向に直交する方向に設けた補強用リブ（８６）を設けたので、ズレ防止用リブ（８５）の強度、剛性に高いものが得られる。
【００３７】
又一方の樹脂成形品の取付脚部（８）には、ズレ防止用リブ（８５）とともに振動方向と平行に補強用リブ（８６）を設けたので、ズレ防止用リブ（８５）を含むリブ（８４）全体の剛性を高めることができる。
そして、補強用リブ（８６）は、ズレ防止用リブ（８５）よりも短く、突出量が小さいので、車両のインストルメントパネルのエアコンダクト形成用の樹脂成形品のように、長さが長い一方の樹脂成形品を持上げて振動溶着機へセットする際、セットが容易である。又溶着後における溶着品の上方への取り出しに際し、持上げストロークも小さなもので足り、溶着品の取出作業が容易となる。
又これにより、溶着品を持上げて取り出すシリンダ等もストロークが小さなもので足りることとなり、小容量のシリンダや簡素な持上げ機構で足りることとなり、取出機構も簡素なものですみ、他方の樹脂成形品の保持を行う上型等の固定側の支持部材の上下方向のストロークも小さくてすみ、トータルとして振動溶着機の小型化をも図ることができる。
【００３８】
更に、取付脚部は、２つの樹脂成形品の一方のみに設けたので、他方の樹脂成形品の溶着部にリブが突出することがなく、特に外観性が重要な要素となる裏面にエアコンダクトを内装したインストルメントパネルのような樹脂成形品の振動溶着部を構成する取付脚部が突出することがなく、好ましい。
【図面の簡単な説明】
【図１】振動溶着する第２の樹脂成形品の平面図
【図２】図１の２−２線断面図
【図３】図１の３−３線断面図
【図４】取付脚部の斜視図
【図５】図４の５−５線断面図
【図６】図４の６−６線断面図
【図７】溶着機の主要部の外観斜視図
【図８】溶着工程を示す作用図の模式的縦断面図で、第１工程を示す図
【図９】溶着工程を示す作用図の模式的縦断面図で、第２工程を示す図
【図１０】溶着工程を示す作用図の模式的縦断面図で、第３工程を示す図
【図１１】ズレ防止用リブを有する取付脚部を支持治具から抜き出す作用図で、第１段階の図
【図１２】ズレ防止用リブを有する取付脚部を支持治具から抜き出す作用図で、第２段階の図
【符号の説明】
１…第２の樹脂成形品であるエアコンダクト、２，３，４…凹部、８…取付脚部、８３…凸部、８４…リブ、８５…ズレ防止用リブ、８６…補強用リブ、１０…第１の樹脂成形品であるインストルメントパネル、２０…振動機、２８…支持治具。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for supporting a vibration welding portion of a vibration-side resin molded product on a support jig of a vibration welding machine when manufacturing first and second resin molded products by a vibration welding technique.
[0002]
[Prior art]
The vibration welding method in which resin molded products are butted together, one side is fixed, the other is on the vibration side, and the butted portion between the resin molded products is pressed with a jig and vibration welded has been put to practical use. Yes.
Weld each other, put jigs on the upper and lower surfaces of each welded part, press and hold each welded part from above and below, and vibrate one of the jigs. When the resin member is vibrated, there is a possibility that the welded portion on the vibration side is displaced from the fixed side.
As a result, welding failure occurs in the vibration welded part, peeling or becoming easy to peel off and a predetermined welding strength cannot be obtained, or the welding position is shifted on the welding surface, and the position accuracy of the welded part is increased. It may become defective.
[0003]
The conventional technique of (1) Japanese Utility Model Laid-Open No. 6-29291 is preferable as a measure for preventing the above-described deviation.
The above {circle around (1)} relates to an assembly structure of a synthetic resin molded product such as a speaker box, and the structure disclosed here is an attachment that is a welded portion on each of the peripheral portions of a pair of resin members to be welded. A rib is formed on the upper surface of the mounting allowance of one member on the outer side and on both sides so as to surround the upper surface to form a deep hole-shaped portion, and The mounting allowance is flat.
Place the tip of one jig on the lower surface of the flat mounting allowance of one member, and place the other jig in the deep hole-shaped part surrounded by ribs of equal height of the mounting allowance of the other member Is inserted, and the tip of the jig is applied to the upper bottom of the deep hole portion, and vibration welding is performed while pressing the mounting allowance.
[0004]
Further, the conventional technique (2) of Japanese Patent Laid-Open No. 11-34169 is also preferable as a measure for preventing the above-described deviation.
The above (2) relates to a vibration welding apparatus and a vibration welding method, and the configuration disclosed here is provided with a welded portion on the peripheral edge of a pair of resin members, and a concave groove on the butted surface of one welded portion. Providing a convex portion on the butting surface of one welded portion, engaging the concave groove and convex portion of these welded portions, and providing ribs on the outer surface (one upper surface and the other outer bottom surface) of the welded portion The tip portions of the jigs arranged above and below are engaged with the ribs and pressed, and vibration welding is performed.
[0005]
[Problems to be solved by the invention]
In the prior art (1), since the jig is inserted into the deep hole-shaped rib when the jig vibrates, the jig and the rib can be engaged with each other to prevent displacement. Therefore, it is preferable in terms of prevention of poor welding and ensuring positional accuracy.
However, the ribs have the same height on both the outer side and both sides, and have a large amount of protrusion, and are deep hole-like, so when engaging or disengaging the resin member on this side, The set stroke and the release stroke are inevitably increased.
In particular, when a resin member having at least a concave portion or a hollow portion is welded to the back surface of a panel-shaped instrument panel made of a resin molded member by a vibration welding method, the instrument panel and the resin member on the back surface are It is very long and the above-mentioned problems become remarkable.
As a result, there is a possibility that the outer shape of the vibration welding machine becomes large, the vertical movement mechanism of the mold becomes large, and it is difficult to take out the welded product in operation.
[0006]
The prior art (2) has the same problem as the above (1) in welding a vehicle instrument panel having a duct having a concave or hollow part at least partially on the back surface. As in the case of (1), there is a possibility that the outer shape of the vibration welding machine will be large, the vertical movement mechanism of the mold may be enlarged, and it is difficult to take out the welded product in the work.
Also, since it is necessary to provide ribs in the respective welded portions of the upper and lower resin members, the structure of the welded portion is complicated, and the vehicle instrument is provided with a duct having a concave or hollow portion at least partially on the back surface. Like a panel, it is difficult to adopt in a resin product in which one of the two welded members appears on the surface and the appearance of the surface shape is required.
[0007]
The present invention provides a resin member on a fixed side supported by a mold when vibration-welding a resin molded product such as an instrument panel of a vehicle having a duct having a concave portion or a hollow portion at least partially on the back surface. On the other hand, the support part of the vibration side resin member supported by the vibration welding machine via a jig is securely supported by engaging the vibrating jig without causing a positional shift, and the welding part is welded. It is an object of the present invention to provide a support structure for a resin-molded product that is welded by vibration and capable of maintaining strength at a predetermined level and accurately maintaining positional accuracy.
In particular, the present invention makes it possible to reliably support the engagement in the vibration direction while engaging and supporting the welding portion (support portion) on the vibration side with the support jig, and the vertical stroke of the mold on the fixed side after welding. Vibration welding resin that minimizes the welding stroke, minimizes the removal stroke of the welded product from the jig, simplifies the removal mechanism, and facilitates the removal and removal of the welded product. It aims at providing the support structure of a molded article.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, claim 1 is composed of a first resin molded product and a second resin molded product, and either of the first or second resin molded product is supported by a vibration welding machine. A resin molded product comprising a plurality of mounting legs supported by a tool, wherein one of the resin molded products is vibrated and the mounting leg is welded to the other resin molded product. A welding convex portion orthogonal to the vibration direction is provided on the end surface of the mounting leg portion provided in the product, and is the end surface of at least a part (8) of the mounting leg portion in the direction toward the support device. Provide a rib (84) to engage with the jig,
The rib (84) is in the vibration direction And in a direction perpendicular to the direction of taking out the resin product The reinforcing rib (86) provided and the direction orthogonal to the vibration direction And in the direction of taking out resin products And a rib (85) for preventing misalignment longer than the reinforcing rib (86).
[0009]
In claim 1, the support jig of the vibration welding machine is engaged with the rib 84 provided on the mounting leg portion (8) which is the welded portion of one resin molded product, and the long misalignment prevention rib (85) is used. Since the vibrating support jig is engaged in the vibration direction, the mounting leg portion does not slip or shift with respect to the support jig during vibration, and the first resin molded product and the second resin The molded product can be vibration welded accurately while maintaining a predetermined strength and maintaining a high positional accuracy.
Further, since the reinforcing rib (86) is provided in the vibration direction, the rigidity of the rib (85) including the deviation preventing rib can be increased, and the reinforcing rib (86) is more than the deviation preventing rib (85). Since it is short and the protruding amount is small, it is easy to set the resin molded product having the mounting legs (8) with the ribs (84) to the vibration welding machine, and the take-up stroke of the welded product after welding is also small. It is sufficient to remove the welded product, and a simple mechanism for removing the welded product is sufficient, and the vibration welding machine can be downsized as a whole.
Furthermore, since the mounting leg (8) is provided on only one of the two resin molded products, the rib does not protrude from the other welded portion, and at least part of the concave portion is formed on the back surface that requires appearance. Alternatively, it is preferable for vibration welding of a resin molded product such as an instrument panel in which a duct having a hollow portion is provided.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a plan view of a second resin molded product to be welded by vibration.
In the present embodiment, the panel-shaped first resin molded product is an instrument panel of a vehicle, and the second resin molded product is an air conditioner duct welded to the back surface of the instrument panel.
[0011]
FIG. 1 is a plan view of an air conditioner duct 1 that is a second resin molded product. The air conditioner duct 1 is represented by a solid line, and an instrument panel 10 that is a first resin molded product welded to the upper surface of the air conditioner duct 1 is shown by a chain line. Expressed in
The air conditioner duct 1 is a thermoplastic resin such as polypropylene, ABS, polycarbonate (PC), PE, nylon, etc., and is formed by a method such as injection molding or blow molding, and is long in the left-right direction and long in the vertical direction. Is short.
The air conditioner duct 1 is welded to the instrument panel 10 so that it will be provided on the left and right sides of the central recess 2 which will later form the center air conditioner duct, and welded to the instrument panel 10. The left and right, upper and lower recesses 3, 3, 4, 4 that form the left and right air-conditioning ducts that are divided into upper and lower portions are provided in the length direction at the top and are welded to the instrument panel 10 to form a long slot later. Left and right recesses 5 and 5 forming a blowout port for the defroster. The air conditioner duct 1 is partially provided with a hollow portion.
[0012]
In the above description, the concave portion is described. However, each of the concave portions 2, 3, 4 and 5 formed in the air-conditioner duct is a duct formed as a hollow portion, and even if vibration welding is performed on the instrument panel via the mounting leg portion. Of course it is good. Further, any one or a plurality of the recesses 2, 3, 4 and 5 formed in the air-conditioner duct is a hollow part, and one or a plurality of parts are formed as a recess, and the mounting leg part is interposed. Of course, vibration welding may be performed on the instrument panel.
[0013]
At the left end of the air-conditioner duct 1 shown in the drawing, an attachment leg portion 6 constituting a welded portion to be welded to the joint surface of the instrument panel 10 is integrally provided so as to protrude outward in the length direction.
In addition, the same mounting leg 7 (... represents a plurality, the same applies hereinafter) is integrally provided in the periphery of the upper recesses 2, 3, 4 and 5 described above. The mounting legs 7 have a length depending on the part.
[0014]
In the embodiment, a bent portion 4a in the lower side of the right end portion of the concave portion 4 on the right side is formed to extend downward from the left side, and at the base of the extended portion 4b, A mounting leg portion 8 that protrudes outward is integrally provided outside the boundary portion.
As is apparent from the plan view of FIG. 1, the mounting leg 8 has a smaller area than the other mounting legs 6, 7. Therefore, the welding area is small.
[0015]
By the way, the air-conditioner duct 1 arrange | positioned on the back surface of the instrument panel 10 shown with the chain line abuts the attachment leg part 6,7 ..., 8 on the joining surface of the instrument panel 10 back surface, and makes the instrument panel 10 a fixed side. The enconduct 1 is set on a vibrator, and the enconduct 1 is vibrated in the left-right direction indicated by an arrow (a) in the figure to perform vibration welding.
[0016]
2 is a cross-sectional view taken along line 2-2 of FIG.
The mounting leg portion 7 has a substantially inverted U-shaped cross section, and is provided integrally with the substrate 1a of the air-conditioner duct 1. The mounting leg portion 7 protrudes upward at the center of the mounting leg portion 7 that protrudes upward. The part 7a is provided integrally, and the upper end surface of the convex part 7a abuts the joining surface on the back surface of the instrument panel 10.
The lower surface of the mounting leg portion 7 is supported by a support jig 28 of the vibrator, and the air conditioner duct 1 is vibrated through the support jig 28 in the front and back direction of the paper, the instrument panel 10 is set as a fixed side, and the air conditioner duct 1 This part is vibration welded to the instrument panel 10.
[0017]
3 is a cross-sectional view taken along line 3-3 of FIG.
As described above, the mounting leg portion 8 is integrally provided so as to protrude outward from the boundary portion between the bent portion 4a and the extension portion 4b of one of the concave portions 4, and is formed outwardly at the upper end portion of this portion of the concave portion 4. It is provided so that it may bend and protrude.
The mounting leg portion 8 includes a top piece portion 81 that extends outward at a right angle from the upper end portion of the upright wall piece 4c in the embodiment, and the rear surface of the instrument panel 10 is joined to the center portion of the top surface of the top piece portion 81. A convex portion 82 that abuts the surface is provided, and an upper end surface 83 of the convex portion 82 abuts a joint surface on the back surface of the instrument panel 10.
[0018]
The mounting leg 8 described above has a substantially inverted U-shaped cross section as clearly shown in the drawing, and the vertical length is shorter than other mounting legs as clearly shown in FIG.
The tip of the support jig of the vibration welding machine is engaged with the inverted U-shaped portion of the mounting leg 8 and the lower surface of the mounting leg 8 is supported by the support jig, as indicated by the arrow (a) in the figure. The air-conditioner duct 1 is vibrated in the left-right direction via the support jig 28, and the instrument panel 10 is fixed, and this portion of the air-conditioner duct 1 is vibration welded to the instrument panel 10.
[0019]
FIG. 4 is a perspective view of the mounting leg 8 described above.
The mounting leg portion 8 includes a rib 84 on the top piece portion 81, and the rib 84 includes a deviation prevention rib 85 that hangs at a substantially right angle from the outer end portion of the top piece portion 81, and both sides of the deviation prevention rib 85. And left and right reinforcing ribs 86, 86 that integrally connect the upper portion of the wall piece 4 c and both sides of the top piece portion 81, and these ribs 85, 86, 86 are described above of the mounting leg portion 8. It is formed integrally with the part.
The deviation preventing rib 85 is provided in a direction orthogonal to the vibration direction, And it is provided in a direction that coincides with the extraction direction (extraction direction) of the instrument panel (resin product) that is the left-right direction in FIG. The reinforcing ribs 86 are provided in the vibration direction.
[0020]
5 is a cross-sectional view taken along line 5-5 of FIG.
The misalignment prevention rib 85 provided so that the outer end portion of the mounting leg portion 8 bends and hangs down has a downward projecting length H, and the upper end portion of the support jig 28 of the vibration welding machine is the wall piece 4c. The outer surface 4 c ′ and the rear surface 85 a of the rib 85 have a length necessary and sufficient for engaging and holding.
The distance between the top 4d of the outer surface 4c 'of the wall piece 4c and the back surface 85a of the rib 85 is such that the upper end of the support jig 28 is engaged almost closely, and the arrow (a) of the support jig 28 The spacing is such that the engagement with the support jig 28 is ensured with respect to the vibration direction shown.
[0021]
6 is a cross-sectional view taken along line 6-6 of FIG.
The reinforcing ribs 86, 86 provided on both sides of the mounting leg portion 8 have a protruding length H <b> 1 that is lower than the above-described deviation preventing rib 85, and in the embodiment, the height H of the deviation preventing rib 85. However, 1/2 or less than 1/2 is preferable.
The downward protruding length of the reinforcing ribs 86, 86 is that the direction in which the ribs 86, 86 are provided is the vibration direction, and does not prevent the displacement at the time of vibration. Ribs for preventing misalignment 85 , 85 The rib 84 may have a length that can maintain the strength of the rib 84 at a predetermined level.
Accordingly, the reinforcing ribs 86 and 86 in the vibration direction are shallow, and the instrument panel 10 and the air-conditioner duct 1 are lifted upward from the support jig 28 to release the engagement with the support jig 28. And When extracting (removing) in the horizontal direction of the figure The amount of protrusion is such that the upward lifting stroke is minimized. Further, when engaging and setting the support jig 28, the amount of protrusion is such that the mounting leg 8 can be easily engaged and set.
[0022]
The rib 84 is provided on the mounting leg portion 8 as described above, because the welding area of the mounting leg portion 8 is small, and therefore the back surface of the instrument panel 10 from below is supported by the support jig 28 of the vibration welding machine. Even if it is pressed and supported, there is a possibility that displacement will occur, and as a result, there is a possibility of welding failure and displacement of the welding position may occur. If there is a possibility of malfunction, such mounting ribs may be provided with such ribs, and the mounting legs provided with such ribs are not limited to one place as in the embodiment. Absent.
[0023]
FIG. 7 is an external perspective view of the main part of the welding welder.
The vibration welding machine 20 is composed of an upper block 21 that is fixed to the front and rear and the left and right and moves up and down, and a lower block 25 that will be described later.
The upper block 21 includes an upper mold 22 that holds the instrument panel 10, a support frame 23 that supports the upper mold 22, and a cylinder (not shown) that moves the support frame 23 up and down. 24.
The lower block 25 is mounted on a fixed base 26, a vibration base 27 that vibrates the air conditioner duct 1 in the length direction (left and right direction in FIG. 1), and mounting legs of the air conditioner duct 1. The support jigs 28 are arranged upright and supported from the lower surface, and the support jigs 28 are divided into a plurality of pieces according to the positions of the mounting legs.
[0024]
8 to 10 are schematic operation diagrams showing the welding process.
FIG. 8 is a diagram showing the first step.
Guide posts 29 are vertically installed on the base 26 at the four corners, and the lower peripheral portion of the base frame 23 of the upper block 21 is engaged to ensure vertical movement of the upper block 21.
The portion shown in the cross section on the left side of the figure is the outer wall 30 of the vibration welding machine 20, and the vibration welding machine 20 is installed in the outer wall 30, and the outer wall 30 is provided with a window 31 for setting and removal. Yes.
[0025]
First, the upper die 22 is raised, and the instrument panel 10 is set on the lower surface of the upper die 22 and is sucked and held. In the figure, 22a ... is an extraction vent passage for adsorption.
Thereby, the instrument panel 10 is held on the lower surface of the upper mold 22.
The air conditioner duct 1 supports the upper end portions of the support jigs 28 on the lower surfaces of the mounting leg portions 6, 7, and 8 installed upright on the vibration table 27 of the lower block 25.
This state is shown in FIG.
[0026]
In the mounting leg portion 8 described above, as shown in FIGS. 4 to 6, the upper end portion 28a of the support jig 28 of the vibration welding machine is formed between the rib 85 for preventing the displacement of the mounting leg portion 8 and the wall piece 4c. Engage in between and securely engage in the vibration direction indicated by arrow (a).
The reinforcing ribs 86 and 86 face the left and right of the upper end portion 28a of the support jig 28, respectively.
The upper end surface 28b of the support jig 28 contacts the top piece portion 81a.
As described above, in the mounting leg portion 8, the support jig 28 is engaged with the vibration direction.
[0027]
As described above, the instrument panel 10 is sucked and held by the upper mold 22, the air-conditioner duct 1 is set on the support jigs 28 of the vibration table 27, and the mounting legs 6, 7, 8 are supported. As shown by the arrow (b), the upper die 22 is lowered, the air conditioner duct 1 is overlaid on the back surface (lower surface) of the instrument panel 10, and the joint surface of the back surface of the instrument panel 10 and the mounting legs 6 of the air conditioner duct 1 are attached. The convex part which is the joint surface of 7 and 8 is faced | matched.
This state is shown in FIG.
[0028]
FIG. 9 shows the first step.
As shown in FIG. 9, after the instrument panel 10 and the air conditioner duct 1 are sandwiched between the upper mold 22 and the support jigs 28 of the vibration table 27, the vibration table 27 is vibrated. The vibration direction is the front and back direction of the paper surface in FIG.
Due to the frictional heat due to vibration, the mounting legs 6, 7, 8 including the convex portions and the joint surface of the back surface of the instrument panel 10 are welded.
Thereby, the air-conditioner duct 1 is welded and integrated on the back surface of the instrument panel 10, an air-conditioner passage is formed in the middle of the back surface of the instrument panel 10, and the air-conditioner duct is formed by a part of the cavity. Will be formed.
[0029]
By the way, the mounting leg portion 8 described above is arranged in the front direction of the paper surface of FIG. 9, and the upper end portion 28 a of the support jig 28 is for preventing the deviation of the length H as shown in FIGS. 4 and 5. Located between the rib 85 and the upper end of the wall piece 4c, the vibration direction (a) is constrained by the rib 85 and the wall piece 4c, and the support jig 28 and the attachment leg of the attachment leg 8 with respect to the vibration direction. No deviation occurs on the contact surface with the portion 8.
Therefore, even if the welding area of the mounting leg 8 is small, no deviation occurs between the support jig 28 and the mounting leg 8, and the mounting leg 8 vibrates integrally with the vibration of the support jig 28. The mounting leg 8 can be welded to a predetermined joint surface on the back surface of the instrument panel 10 while ensuring the welding strength required at an appropriate position without causing poor welding and without causing a displacement. .
[0030]
FIG. 10 is a diagram illustrating the third step.
The instrument panel 10 and the air conditioner duct 1 are vibrated and welded as described above to form the instrument panel assembly 40, and then the upper mold 22 is raised.
Thereafter, the instrument panel assembly 40 is lifted upward from the support jig 28 with a push-out push rod or the like (not shown in FIG. 10), pulled out to the left in the figure as indicated by an arrow (c), and the window 31 Take it out from.
[0031]
FIG. 11 and FIG. 12 are operation diagrams for extracting the mounting leg portion from the support jig 28. The figure is a view seen from the direction of FIG.
As shown in FIG. 11, the push rod 31 is raised in the direction of the arrow (d) around the portion of the instrument panel assembly 40 having the air conditioning duct mounting leg 8, whereby the mounting leg 8 is moved to the arrow (e ) As shown by).
[0032]
FIG. 12 shows a state in which the push rod 31 is raised and the lower ends of the reinforcing ribs 86 on both sides of the mounting leg 8 are disengaged from the upper end surface 28b of the support jig 28 and the engagement is released.
Thereafter, in this portion, the mounting leg portion 8 is detached from the support jig 28, and the instrument panel assembly 40 including the mounting leg portion 8 can be taken out in the direction of arrow (f).
[0033]
4 and 5 is directed to the take-out direction 85, which is the front and back direction of the paper surface of FIG. 5, and is provided with respect to the take-off direction. Does not become an obstacle.
For this reason, the lifting amount of the mounting leg 8 by the push rod 31 is sufficient by the height H3 exceeding the height of the reinforcing ribs 86, 86 having a small protruding amount and the height H2 in which the convex portion is crushed by welding.
Accordingly, the lifting height when the mounting leg portion 8 is taken out can be small.
As a result, when the instrument panel assembly 40 is removed from the vibration welding machine after the end of welding, the lifting amount of the mounting leg portion 8 is small, so that the support jig 28 at the end of the instrument panel assembly 40 is removed. The take-out property is good, and the setting from the top of the mounting leg 8 to the support jig 28 becomes easy.
Therefore, the instrument panel assembly 40 can be set and removed easily.
[0034]
The mounting legs 6, 7, and 8 shown in the embodiment may be provided integrally with the instrument panel panel 10, and the air-conditioner duct 1 is fixed and the instrument panel 10 is vibrated and vibration welded. May be.
The present invention can be applied not only to the instrument panel but also to vibration welding of interior and exterior parts and functional parts of a vehicle such as a bumper that is a resin material, or a relatively large building material.
[0035]
【The invention's effect】
The present invention exhibits the following effects by the above configuration.
Claim 1 consists of a first resin molded product and a second resin molded product, and a plurality of attachments supported by either the first or second resin molded product with a support jig of a vibration welding machine An end surface of a mounting leg portion provided on one of the resin molded products, comprising a leg portion, wherein one resin molded product is vibrated and the mounting leg portion is welded to the other resin molded product. A rib (84) that engages with the support jig in the direction of the support tool in the end surface of at least a part (8) of the mounting leg portion. The rib (84) is in the vibration direction And in a direction perpendicular to the direction of taking out the resin product The reinforcing rib (86) provided and the direction orthogonal to the vibration direction And in the direction of taking out resin products Provided, and a rib for preventing misalignment (85) longer than the reinforcing rib (86).
[0036]
In Claim 1, the rib (84) is provided in the attachment leg part (8) which comprises the welding part of one resin molded product supported with the support jig of a vibration welding machine, and this rib (84) is provided with a vibration welding machine. When the support jig is engaged, the long support rib (85) is used to engage the vibrating support jig in the vibration direction. Thereby, this attachment leg part (8) welded with the welding part of the other resin molded product does not slip or shift | deviate with respect to a support jig at the time of vibration.
Therefore, it is possible to perform vibration welding with respect to the other resin molded product accurately, with one resin molded product maintaining a predetermined strength and high positional accuracy.
or Provided in the direction orthogonal to the vibration direction and in the direction of taking out the resin product For the rib for preventing misalignment (85) Provided in the direction of vibration and perpendicular to the direction of taking out the resin product Since the reinforcing rib (86) is provided, the rib preventing rib (85) having high strength and rigidity can be obtained.
[0037]
The mounting leg (8) of one of the resin molded products is provided with the rib for preventing misalignment (85) and the reinforcing rib (86) in parallel with the vibration direction, so that the rib including the misalignment preventing rib (85) is provided. (84) The overall rigidity can be increased.
The reinforcing rib (86) is shorter than the misalignment preventing rib (85) and has a small protruding amount. Therefore, the reinforcing rib (86) has a long length like a resin molded product for forming an air conditioner duct of a vehicle instrument panel. When the resin molded product is lifted and set in the vibration welding machine, setting is easy. Further, when taking out the welded product after welding, a small lifting stroke is sufficient, and the work for taking out the welded product becomes easy.
As a result, the cylinder that lifts and takes out the welded product needs only a small stroke, and a small-capacity cylinder and a simple lifting mechanism are sufficient, and the take-out mechanism is also simple. The vertical stroke of the support member on the fixed side such as the upper mold that holds the upper portion can be reduced, and the vibration welding machine can be downsized as a whole.
[0038]
Furthermore, since the mounting leg portion is provided on only one of the two resin molded products, the rib does not protrude from the welded portion of the other resin molded product, and the air conditioner duct is provided on the back surface, which is a particularly important element in appearance. It is preferable that the mounting leg portion constituting the vibration welded portion of the resin molded product such as an instrument panel in which is mounted does not protrude.
[Brief description of the drawings]
FIG. 1 is a plan view of a second resin molded product to be welded by vibration.
2 is a sectional view taken along line 2-2 of FIG.
3 is a cross-sectional view taken along line 3-3 in FIG.
FIG. 4 is a perspective view of a mounting leg portion.
5 is a cross-sectional view taken along line 5-5 of FIG.
6 is a sectional view taken along line 6-6 in FIG.
FIG. 7 is an external perspective view of the main part of the welding machine.
FIG. 8 is a schematic longitudinal sectional view of an action diagram showing a welding process, showing a first process.
FIG. 9 is a schematic longitudinal sectional view of an action diagram showing a welding process, showing a second process.
FIG. 10 is a schematic longitudinal sectional view of an action diagram showing a welding process, showing a third process.
FIG. 11 is an operation diagram for extracting the mounting leg portion having the deviation preventing rib from the support jig, and is a diagram of the first stage.
FIG. 12 is an operation diagram for extracting the mounting leg portion having the rib for preventing misalignment from the support jig, and is a second stage diagram.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Air-conditioner duct which is a 2nd resin molded product, 2, 3, 4 ... Concave part, 8 ... Mounting leg part, 83 ... Convex part, 84 ... Rib, 85 ... Rib for prevention of displacement, 86 ... Rib for reinforcement, 10 ... an instrument panel as a first resin molded product, 20 ... a vibrator, 28 ... a support jig.

Claims

A first resin molded product and a second resin molded product, each of the first or second resin molded product is provided with a plurality of mounting legs supported by a vibration welding machine support jig, A resin molded product that vibrates one resin molded product and welds the mounting leg to the other resin molded product,
Providing a welding convex part orthogonal to the vibration direction on the end face of the mounting leg provided in either resin molded product,
A rib (84) that engages with the support jig is provided in an end surface of at least a part (8) of the mounting leg portion in the direction toward the support,
The rib (84) includes a vibration direction and a reinforcing rib provided in a direction perpendicular to the extraction direction of the resin product (86), provided in the take-out direction of the direction and the resin product perpendicular to the vibration direction, for reinforcing It was composed of a rib (85) for preventing misalignment longer than the rib (86).
A support structure for a resin molded product that is vibration welded.