JP4390120B2 - Wind molding corner structure and molding method - Google Patents

Wind molding corner structure and molding method Download PDF

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Publication number
JP4390120B2
JP4390120B2 JP2000121254A JP2000121254A JP4390120B2 JP 4390120 B2 JP4390120 B2 JP 4390120B2 JP 2000121254 A JP2000121254 A JP 2000121254A JP 2000121254 A JP2000121254 A JP 2000121254A JP 4390120 B2 JP4390120 B2 JP 4390120B2
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molding
corner portion
joining
wind
members
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JP2001301040A (en
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実律 大石
浩二 大屋
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Inoac Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/324—Avoiding burr formation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/524—Joining profiled elements
    • B29C66/5243—Joining profiled elements for forming corner connections, e.g. for making window frames or V-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
    • B29L2031/265—Packings, Gaskets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、ウィンドモールディングのコーナー部の構造とその成形方法に関し、特にはコーナー部が３次元的に曲がったウィンドガラスに装着されるウィンドモールディングのコーナー部の構造とその成形方法に関する。
【０００２】
【従来の技術】
図１２に示すように、自動車ＭのフロントウィンドガラスＷ、リアウィンドガラス等の周囲には、車体パネルＰとウィンドガラスＷとの間隙をシールするためにウィンドモールディング７０が装着されている。このモールディング７０は、図１３に示すように、ポリ塩化ビニル（ＰＶＣ）等の合成樹脂材料から所定断面形状に押出成形された複数の略直線状のモール部材７１，８１を接合したものからなる。前記モール部材７１，８１は、意匠側となる装飾部７２，８２の裏側に脚部７３，８３が突設され、さらに該脚部７３，８３の側面に突条７４，８４が突出形成され、該突条７４，８４と前記装飾部７２，８２との間でガラス嵌着溝７５，８５が形成されている。図示の符号７６，８６は前記脚部７３，８３の剛性を高めるために該脚部７３，８３内に埋設された金属製芯材であり、また符号７７は前記脚部７３の突条７４とは反対側の側面に形成されたシール用リップである。前記シール用リップ７７と装飾部７２の間の脚部７３側面はレインガータ用の凹溝となっている。なお、図示の例では、前記モール部材７１，８１は、異形断面形状となっており、図の右側のモール部材８１にはシール用リップ及びレインガータ用の凹溝が形成されていない。
【０００３】
このようなモールディング７０は、コーナー部Ｗｃを有するウィンドガラスＷの周囲に一連に装着するため、前記略直線状の少なくとも二つ以上のモール部材７１，８１を所定長及び所定角度で切断し、その端部同士を接合することによってコーナー部７０Ｃが形成され、それによって一連にされている。
【０００４】
従来、前記モール部材７１，８１の接合は、一般に熱溶着方法によってなされている。この接合方法においては、まず、二つの合成樹脂製モール部材７１，８１の接合予定端部７１ａ，８１ａを、モール部材の長手方向に対して斜めに切断し、次いで、図１４の（Ａ）に示すように、前記相互に接合するモール部材７１，８１の接合予定端部７１ａ，８１ａを互いに対向する一対の金属製の保持型９１，９５でそれぞれ保持し、これをヒーターＨに近接させることによって、前記接合予定端部７１ａ，８１ａを加熱して溶融させる。
【０００５】
前記保持型９１，９５は、モール部材を接合してコーナー部のあるモールディングを形成した際に内周側（ウィンドガラス周縁に当接する側）となる内側半分を保持する内側用型９２，９６と、外周側（窓枠周縁に当接する側）を保持する外側用型９３，９７とからなり、この内側用型９２，９６と外側用型９３，９７間にモール部材７１，８１の保持孔９４，９８が形成されている。この保持孔９４，９８は保持型９１，９５の相互に対向する対向面９１ａ，９５ａに対し所定の角度で形成されており、モール部材７１，８１を接合予定端部７１ａ，８１ａ先端が僅かに保持型９１，９５から突出した状態で挟持できるようになっている。
【０００６】
そして、前記加熱によってモール部材７１，８１の接合予定端部７１ａ，８１ａが軟化、溶融したところで、図１４の（Ｂ）のように、対向する一対の保持型９１，９５を近接させてモール部材７１，８１の接合予定端部７１ａ，８１ａの切断面（端面）７１ｂ，８１ｂ同士を圧接することによって、図１３に示したモールディング７０のコーナー部７０Ｃを接合形成する。
【０００７】
ところで、上記モールディング７０が装着されるウィンドガラスＷには、図１５に示すようなコーナー部Ｗｃ付近が３次元的に曲げられたもの、すなわち、コーナー部Ｗｃ付近が裏方向（ガラスＷの厚み方向）Ｘにも曲げられたものが使用されることが多い。
【０００８】
しかしながら、上記のモールディング７０のコーナー部（接合部）７０Ｃにおいては、該コーナー部７０Ｃをガラス嵌着溝側（ウィンドガラス側）から見た状態を示す図１６から理解されるように、前記二つのモール部材７１，８１の接合予定端部７１ａ，８１ａの溶着角度、すなわち各接合予定端部７１ａ，８１ａの切断面７１ｂ，８１ｂのガラス嵌着溝７５，８５に対する角度γ１，γ２が略直角となっている。そのため、当該モールディング７０のコーナー部７０Ｃでは、図１７に示すように、ガラス面Ｗａと各モール部材７１，８１の装飾部７２，８２とが平行とならず、見栄えが悪くなるとともに、各モール部材７１，８１のガラス嵌着溝７５，８５とウィンドガラスＷの嵌着性、つまりモールディング７０とウィンドガラスＷとの装着性が悪いといった問題がある。また、前記モールディング７０のコーナー部７０ＣをウィンドガラスＷのコーナー部Ｗｃに無理やり装着した場合には、当該モールディング７０のコーナー部７０においてガラス嵌着溝７５，８５の開口側が拡がるといった、所謂口開き現象が発生するおそれがあり、外観上好ましくない。
【０００９】
【発明が解決しようとする課題】
この発明は前記の点に鑑みなされたもので、コーナー部が３次元的に曲がったウィンドガラスに見栄え良く、かつ装着性良好に装着できるウィンドモールディングのコーナー部の構造及びその成形方法を提供するものである。
【００１０】
【課題を解決するための手段】
請求項１の発明は、装飾部の裏側に脚部が突設され、該脚部の側面に前記装飾部裏面との間でガラス嵌着溝を形成する突条が突出形成された二つの合成樹脂製モール部材の接合予定端部が、モール部材の長手方向に対して斜めに切断され、その切断面同士が合わされて接合されることにより構成されるウィンドモールディングのコーナー部において、前記各接合予定端部の切断面のそれぞれがモール部材の意匠面側から裏側に向かって各モール部材の内方へ傾斜して前記切断面のガラス嵌着溝に対する角度が当該ウィンドモールのコーナー部を装着するウィンドガラスのコーナー部における裏方向への曲げ角度と等しくされ、それらの切断面同士が圧着されるようにして二つのモール部材が接合されていることを特徴とするウィンドモールディングのコーナー部の構造に係る。
【００１１】
また、請求項２の発明は、請求項１において、二つのモール部材の接合位置の意匠面が曲面形状に賦形されていることを特徴とする。
【００１２】
さらに、請求項３の発明は、装飾部の裏側に脚部が突設され、該脚部の側面に前記装飾部裏面との間でガラス嵌着溝を形成する突条が突出形成された二つの合成樹脂製モール部材の接合予定端部を、モール部材の長手方向に対して斜めに切断する切断工程と、一対の保持型に前記二つのモール部材の接合予定端部をそれぞれ保持し、該二つのモール部材の接合予定端部を溶融した後、前記一対の保持型を近接させて各接合予定端部の切断面同士を圧着することにより接合する溶融接合工程とを有するウィンドモールディングのコーナー部の成形方法において、前記切断工程の際に、前記各接合予定端部の切断面がモール部材の意匠面側から裏側に向かってモール部材の内方へ傾斜して前記切断面のガラス嵌着溝に対する角度が当該ウィンドモールのコーナー部を装着するウィンドガラスのコーナー部における裏方向への曲げ角度と等しくなるように、各接合予定端部を切断し、前記溶融接合工程の際に、前記切断面同士が面接触するように二つのモール部材の接合予定端部を圧着して接合することを特徴とするウィンドモールディングのコーナー部の成形方法に係る。
【００１３】
またさらに、請求項４の発明は、請求項３において、一対の保持型が、モール部材の接合予定端部の装飾部側形状に対応した型面が形成されたキャビティ型と、モール部材の接合予定端部の突条側を押圧する押圧型とをそれぞれ備え、前記一対のキャビティ型の型面のパーティング部が、該キャビティ型間を閉じたときに曲面形状を構成するように形成され、溶融接合工程の際に、前記キャビティ型の型面のパーティング部の曲面形状部分に各モール部材の接合予定端部の装飾部表面を追従させた状態で、モール部材の溶融及び接合を行い、該モール部材の接合位置の意匠面を曲面形状に賦形することを特徴とする。
【００１４】
【発明の実施の形態】
以下添付の図面に従ってこの発明を詳細に説明する。
図１はこの発明の一実施例に係るウィンドモールディングのコーナー部付近を示す斜視図、図２は同ウィンドモールディングのコーナー部付近をガラス嵌着溝側から見た図、図３は同ウィンドモールディングの使用状態を示す平面図、図４は図３のｂ−ｂ線に沿って切断した断面図、図５は同ウィンドモールディングのコーナー部の成形方法の一例において用いられる成形装置を示す図、図６は同成形方法において二つのモール部材の端部を切断した状態を示す断面図、図７は同じく二つのモール部材の端部を成形装置により保持して加熱する際を示す断面図、図８は図７のｅ−ｅ線に沿って切断した断面図、図９は同じく二つのモール部材の端部を接合する際を示す断面図、図１０は図９のｆ−ｆ線に沿って切断した断面図、図１１は他の実施例に係るウィンドモールディングのコーナー部付近をガラス嵌着溝側から見た図である。
【００１５】
図１ないし図３に示すこの発明の一実施例に係るウィンドモールディング１０は、先の従来技術の欄で図１５及び図１６を用いて説明したコーナー部Ｗｃが３次元的に曲がったウィンドガラスＷの周囲に装着されるものである。このウィンドモールディング１０は、所定断面形状に押出成形された二つの合成樹脂製モール部材１１，２１の接合予定端部１１ａ，２１ａ同士を、所定コーナー角度φ（図３参照）で接合することにより形成されたコーナー部１０Ｃを有している。なお、図２は、同モールディング１０のコーナー部１０Ｃ付近をガラス嵌着溝側から見た状態、つまり図１の矢印ａ方向から見た図である。
【００１６】
前記合成樹脂製モール部材１１，２１は、ポリ塩化ビニル（ＰＶＣ）等の合成樹脂材料からなり、意匠面を構成する装飾部１２，２２と、その裏側に突設された脚部１３，２３とを有している。また、前記脚部１３，２３には、該脚部１３，２３の剛性を高めるための金属製芯材１４，２４が埋設されているとともに、ウィンドガラス側の側面には突条１５，２５が突出形成され、この突条１５，２５表面と装飾部１２，２２裏面との間でウィンドガラスＷに嵌着するためのガラス嵌着溝１６，２６が形成されている。前記ガラス嵌着溝１６，２６の幅はウィンドガラスＷの厚みを考慮して定められる。
【００１７】
なお、図示の例では、二つのモール部材１１，２１は異形断面形状となっており、図の左側のモール部材１１には、脚部１３の突条１５とは反対側の側面にリップ１７が形成され、右側のモール部材２１は前記のようなリップが形成されていない。前記リップ１７は、モール部材１１をウィンドガラスＷの周囲に装着する際、図４に示すように車体パネルＰの立ち面Ｐａに圧接することによって、リップ１７の先端側が装飾部１２側に曲がり、前記立ち面Ｐａと脚部１３間をシールし、リップ１７と装飾部１２間の脚部１３側面にレインガータ用凹溝を形成するものである。また、図示の例では、右側のモール部材２１の突条２５の方が左側のモール部材１１の突条１５よりも長くなっている。勿論、本発明は、上記の如く二つのモール部材１１，２１が異形断面形状となる場合に限らず、両モール部材が同一断面形状となる場合にも適用することができる。図３中の符号Ｇはモール部材１１とウィンドガラスＷ及び車体パネルＰとを接着するための接着剤である。
【００１８】
そして、前記二つのモール部材１１，２１の接合予定端部１１ａ，２１ａが、モール部材の長手方向に対して斜めに切断され、その切断面１１ｂ，２１ｂ同士が合わされて接合（溶着）されることによって、前記コーナー角度φのモールディング１０のコーナー部１０Ｃが構成されている。
【００１９】
ところで、この発明に係るモールディング１０のコーナー部１０Ｃにおいては、図２から理解されるように、前記各接合予定端部１１ａ，２１ａの切断面１１ｂ，２１ｂが意匠面（装飾部表面１２ｓ，２２ｓ）側から裏側（突条裏面１５ｓ，２５ｓ側）に向かって各モール部材１１，２１の内方（図の矢印Ｙ１，Ｙ２方向）へ傾斜し、それらの切断面１１ｂ，２１ｂ同士が圧着されるようにして二つのモール部材１１，２１が接合されている。そのため、前記モール部材１１，２１の溶着面、つまり前記切断面１１ｂ，２１ｂのガラス嵌着溝１６，２６に対する角度（溶着角度）α１，α２は、ともに９０°より大となる。前記角度α１，α２は、ウィンドガラスＷのコーナー部Ｗｃにおける裏方向への曲げ角度θ１，θ２（図１６参照）と同じになるように定められる。このように構成すれば、当該モールディング１０のコーナー部（接合部）１０Ｃ、つまり二つのモール部材１１，２１の接合位置Ｚ及びその周縁において、装飾部１２，２２及びガラス嵌着溝１６，２６が、ウィンドガラスＷのコーナー部Ｗｃのガラス面Ｗａと略平行となるので、見栄えが良くなり、しかも、当該モールディング１０のコーナー部１０ＣをウィンドガラスＷのコーナー部Ｗｃにスムーズかつ確実に追従させることができ、両者の装着性（嵌着性）が従来に比し飛躍的に向上する。加えて、モールディング１０のウィンドガラスＷへの装着時に、従来のようにモール部材１１，２１に余分な応力が作用せず、ガラス嵌着溝８５の開口側が拡がるといった、所謂口開き現象が発生するのを防ぐことができる。
【００２０】
ここで、図１１に本発明の他の実施例として示したモールディング５０のコーナー部５０Ｃの如く、二つのモール部材１１，２１の接合予定端部１１ａ，２１ａの切断面１１ｂ，２１ｂを傾斜させ、そのまま何らの処置も施さずに両モール部材１１，２１を接合した場合には、二つのモール部材１１，２１の接合位置における意匠面に突出部（尖り部）Ｔが現出するのを避けられない。そこで、図１ないし図３に示した実施例では、請求項２に規定した発明のように、二つのモール部材１１，２１の接合位置の意匠面（装飾部１２，２２の表面１２ｓ，２２ｓ）が曲面形状（アール形状）Ｒに賦形されている。このようにすれば、前記接合位置における意匠面の突出を解消することができ、より一層外観が良好となる。
【００２１】
以下に、ここで開示されたウィンドモールディングのコーナー部の成形方法の一例について、図１ないし図３に示したモールディング１０のコーナー部１０Ｃを図５の各図に示した成形装置３０を用いて成形する場合を例にして詳述する。前記成形装置３０について説明すると、該成形装置３０は、分割及び結合可能な一対の保持型３１，４１で構成される。なお、図５において、（Ａ）は開状態の成形装置３０を示す斜視図、（Ｂ）は閉状態の成形装置３０を（Ａ）の矢印ｃ方向から見た図、（Ｃ）は閉状態の成形装置３０を（Ａ）のｄ−ｄ線に沿って切断した断面図である。また、図の右側の保持型３１は前記リップ１７を有しているモール部材１１を保持するものであり、他方、図の左側の保持型４１は前記リップがないモール部材２１を保持するものである。
【００２２】
前記保持型３１，４１は、前記モール部材１１，２１の接合予定端部１１ａ，２１ａの装飾部側形状に対応した型面３３，４３が溝状に形成されたキャビティ型３２，４２と、接合予定端部１１ａ，２１ａの突条側を押圧する押圧型３５，４５とをそれぞれ備えている。ここで、前記キャビティ型３２，４２の型面３３，４３は、キャビティ型３２，４２の相互に対向する対向面３４，４４に対し所定の加工角度ω１，ω２で形成されている。なお、前記角度ω１，ω２は、上記モールディング１０のコーナー部１０Ｃのコーナー角度φを考慮して、具体的にはω１＋ω２＝φの関係が成り立つように定められる。また、前記キャビティ型３２，４２の型面３３，４３は、図５の（Ｂ）から理解されるように、両モール部材の接合位置付近が収容されるパーティング部３３ｐ，４３ｐに近づくにしたがって深くなるように傾斜している。その傾斜の角度β１，β２は、上記ウィンドガラスＷのコーナー部Ｗｃの裏方向への曲げ角度θ１，θ２（図１６参照）と同じになるように定められる。このようにキャビティ型３２，４２の型面３３，４３を形成すれば、該型面３３，４３上に各モール部材１１，２１の接合予定端部１１ａ，２１ａを載置したときに、該接合予定端部１１ａ，２１ａの切断面１１ｂ，２１ｂが互いに平行となり、後述の溶融接合工程の際に、前記切断面１１ｂ，２１ｂ同士が容易に面接触するようになる。また、前記キャビティ型３２，４２の型面３３，４３は、図５の（Ｃ）から理解されるように、キャビティ型３２，４２間を閉じたときに、当該型面３３，４３のパーティング部３３ｐ，４３ｐ及びその周縁部分が滑らかな曲面形状Ｑを構成するように形成されている。
【００２３】
当該モールディングのコーナー部の成形方法は、切断工程と溶融接合工程とを有している。まず、切断工程では、図６に示すように、所定長に押出成形された少なくとも二つの合成樹脂製モール部材１１，２１の接合予定端部１１ａ，２１ａを、カッター等の適宜切削治具により、モール部材の長手方向に対して斜めに切断する。このとき、図示するように、前記各接合予定端部１１ａ，２１ａの切断面１１ｂ，２１ｂが意匠面（装飾部表面１２ｓ，２２ｓ）側から裏面（突条裏面１５ｓ，２５ｓ）側に向かってモール部材１１，２１の内方へ傾斜するようにする。
【００２４】
次の溶融接合工程では、まず、図７及び図８に示すように、前記互いに対向して当接する一対の保持型３１，４１の、キャビティ型３２，４２の型面３３，４３上に前記二つのモール部材１１，２１の接合予定端部１１ａ，２１ａをそれぞれ載置した後、各保持型３１，４１におけるキャビティ型３２，４２と押圧型３５，４５との閉型を行って、それぞれ対応するキャビティ型３２，４２と押圧型３５，４５との間で各モール部材１１，２１の接合予定端部１１ａ，２１ａをそれぞれ挟持して保持する。この際、各接合予定端部１１ａ，２１ａの切断面１１ｂ，２１ｂが互いに離れた平行な状態になり、かつ各接合予定端部１１ａ，２１ａがキャビティ型３２，４２の対向面３４，４４から僅かに突出するようにする。
【００２５】
次いで、前記モール部材１１，２１の接合予定端部１１ａ，２１ａを、前記一対の保持型３１，４１に保持した状態で、ヒーターＨに近接させて加熱軟化し、溶融させる。なお、この加熱温度は、モール部材１１，２１の材質等を考慮して適宜定められる。
【００２６】
そして、前記加熱により、モール部材１１，２１の接合予定端部１１ａ，２１ａが軟化、溶融したところで、図９及び図１０のように、対向する保持型３１，４１を近接させて、各接合予定端部１１ａ，２１ａの切断面１１ｂ，２１ｂ同士を圧着して、当該二つのモール部材１１，２１を接合一体化する。ここで、この接合（溶着）は、前記各接合予定端部１１ａ，２１ａの切断面１１ｂ，２１ｂ同士が面接触するようになされる。また、当該接合は、前記キャビティ型３２，４２の型面３３，４３の曲面形状部分Ｑに各モール部材１１，２１の接合位置及びその周縁の装飾部表面１２ｓ，２２ｓを追従させて行い、それによって、前記装飾部表面１２ｓ，２２ｓ（意匠面）を接合位置で滑らかな曲面形状Ｒに賦形する。
【００２７】
その後、閉型していた成形装置３０を開いて製品を脱型し、上記溶融接合工程時にモール部材１１，２１の接合位置周囲に生じた余剰樹脂（バリ）を切除すれば、図１に示したモールディング１０のコーナー部１０Ｃが得られる。なお、相対する保持型３１，４１（キャビティ型３２，４２）の対向面３４，４４の型面（開口）３３，４３周縁に沿って刃部（図示せず）を突設し、その刃部により上述のモール部材の接合と同時に前記余剰樹脂を切断除去するようにしても良い。
【００２８】
【発明の効果】
以上図示し説明したように、請求項１の発明におけるウィンドモールディングのコーナー部の構造によれば、相対する二つのモール部材の接合予定端部の切断面が意匠面側から裏側に向かって各モール部材の内方へそれぞれ傾斜して前記切断面のガラス嵌着溝に対する角度が当該ウィンドモールのコーナー部を装着するウィンドガラスのコーナー部における裏方向への曲げ角度と等しくされ、それらの切断面同士が圧着されて二つのモール部材が接合されているため、モールディングのウィンドガラスへの装着後において、該モールディングのコーナー部の装飾部及びガラス嵌着溝が、ウィンドガラスの３次元的に曲げられたコーナー部のガラス面と殆ど平行となって見栄えが極めて良い。また、当該ウィンドモールディングのコーナー部をウィンドガラスのコーナー部にスムーズかつ確実に追従させることができ、両者の装着性が従来に比し飛躍的に向上する。加えて、請求項２の発明のように、モール部材の接合位置の意匠面が曲面形状に賦形されれば、前記モール部材の接合位置の意匠面における突出部の現出を避けることができ、より一層外観が良好となる。
【００２９】
さらに、請求項３及び４に記載した成形方法の発明によれば、上記の如くコーナー部が３次元的に曲がったウィンドガラスに見栄え良く、かつ装着性良好に装着できるウィンドモールディングのコーナー部を極めて容易に成形することができる。しかも、当該成形方法に用いる装置の構造も簡単で、経済的である。また特に、請求項４の発明によれば、前記請求項２に規定したモール部材の接合位置の意匠面が曲面形状となったウィンドモールディングのコーナー部も至って簡単に成形することができる。
【図面の簡単な説明】
【図１】 この発明の一実施例に係るウィンドモールディングのコーナー部付近を示す斜視図である。
【図２】 同ウィンドモールディングのコーナー部付近をガラス嵌着溝側から見た図である。
【図３】 同ウィンドモールディングの使用状態を示す平面図である。
【図４】 図３のｂ−ｂ線に沿って切断した断面図である。
【図５】 同ウィンドモールディングのコーナー部の成形方法の一例において用いられる成形装置を示す図である。
【図６】 同成形方法において二つのモール部材の端部を切断した状態を示す断面図である。
【図７】 同じく二つのモール部材の端部を成形装置により保持して加熱する際を示す断面図である。
【図８】 図７のｅ−ｅ線に沿って切断した断面図である。
【図９】 同じく二つのモール部材の端部を接合する際を示す断面図である。
【図１０】 図９のｆ−ｆ線に沿って切断した断面図である。
【図１１】 他の実施例に係るウィンドモールディングのコーナー部付近をガラス嵌着溝側から見た図である。
【図１２】 一般的な自動車のフロントウィンドを示す斜視図である。
【図１３】 従来のウィンドモールディングのコーナー部付近を示す斜視図である。
【図１４】 従来におけるウィンドモールディングの成形方法の一例を示す断面図である。
【図１５】 コーナー部が３次元的に曲がったウィンドガラスを示す部分斜視図である。
【図１６】 従来のウィンドモールディングのコーナー部付近をガラス嵌着溝側から見た図である。
【図１７】 同ウィンドモールディングの使用状態を示す断面図である。
【符号の説明】
１０ ウィンドモールディング
１０Ｃ ウィンドモールディングのコーナー部
１１，２１ モール部材
１１ａ，２１ａ 接合予定端部
１１ｂ，２１ｂ 接合予定端部の切断面
１２，２２ モール部材の装飾部
１２ｓ，２２ｓ モール部材の装飾部表面（意匠面）
１３，２３ モール部材の脚部
１５，２５ モール部材の突条
１６，２６ モール部材のガラス嵌着溝
３０ 成形装置
３１，４１ 保持型
３２，４２ キャビティ型
３３，４３ キャビティ型の型面
３３ｐ，４３ｐ キャビティ型の型面のパーティング部
３５，４５ 押圧型
Ｒ モール部材の接合位置における意匠面の滑らかな曲面形状
Ｗ ウィンドガラス
Ｗｃ ウィンドガラスのコーナー部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a corner portion of a wind molding and a molding method thereof, and more particularly to a structure of a corner portion of a window molding mounted on a wind glass having a corner portion bent three-dimensionally and a molding method thereof.
[0002]
[Prior art]
As shown in FIG. 12, a wind molding 70 is mounted around the front window glass W, rear window glass, and the like of the automobile M to seal the gap between the vehicle body panel P and the window glass W. As shown in FIG. 13, the molding 70 is formed by joining a plurality of substantially linear molding members 71, 81 extruded from a synthetic resin material such as polyvinyl chloride (PVC) into a predetermined cross-sectional shape. The molding members 71 and 81 have leg portions 73 and 83 projecting on the back side of the decorative portions 72 and 82 on the design side, and projecting ridges 74 and 84 projecting on the side surfaces of the leg portions 73 and 83, respectively. Glass fitting grooves 75 and 85 are formed between the protrusions 74 and 84 and the decorative portions 72 and 82. Reference numerals 76 and 86 are metal cores embedded in the legs 73 and 83 in order to increase the rigidity of the legs 73 and 83, and reference numeral 77 is a protrusion 74 of the leg 73. Is a sealing lip formed on the opposite side surface. A side surface of the leg 73 between the sealing lip 77 and the decorative portion 72 is a concave groove for rain gutter. In the illustrated example, the molding members 71 and 81 have an irregular cross-sectional shape, and the molding member 81 on the right side of the drawing is not formed with a sealing lip and a concave groove for rain gutter.
[0003]
Since such a molding 70 is attached in series around the window glass W having the corner portion Wc, the at least two molding members 71 and 81 having a substantially straight shape are cut at a predetermined length and a predetermined angle. The corner portions 70C are formed by joining the end portions, thereby forming a series.
[0004]
Conventionally, the molding members 71 and 81 are generally joined by a heat welding method. In this joining method, first, the joining planned end portions 71a and 81a of the two synthetic resin molding members 71 and 81 are cut obliquely with respect to the longitudinal direction of the molding member, and then in FIG. As shown in the figure, by connecting the planned joining end portions 71a, 81a of the molding members 71, 81 to each other with a pair of metal holding dies 91, 95 facing each other and bringing them close to the heater H, The joining end portions 71a and 81a are heated and melted.
[0005]
The holding molds 91 and 95 are inner molds 92 and 96 that hold inner halves that are inner peripheral sides (sides that come into contact with the periphery of the window glass) when moldings having corner portions are formed by joining molding members. The outer molds 93 and 97 that hold the outer peripheral side (the side that comes into contact with the peripheral edge of the window frame), and the holding holes 94 of the molding members 71 and 81 between the inner molds 92 and 96 and the outer molds 93 and 97. , 98 are formed. The holding holes 94 and 98 are formed at a predetermined angle with respect to the opposing surfaces 91a and 95a of the holding molds 91 and 95, and the tips of the molding members 71 and 81 are slightly connected to the ends 71a and 81a. The holding molds 91 and 95 can be held in a protruding state.
[0006]
When the planned joining end portions 71a and 81a of the molding members 71 and 81 are softened and melted by the heating, a pair of holding molds 91 and 95 facing each other are brought close to each other as shown in FIG. By joining the cut surfaces (end surfaces) 71b and 81b of the planned joining end portions 71a and 81a of the 71 and 81, the corner portion 70C of the molding 70 shown in FIG. 13 is joined and formed.
[0007]
By the way, the windshield W to which the molding 70 is mounted has a three-dimensionally bent portion near the corner portion Wc as shown in FIG. 15, that is, the corner portion Wc portion is in the reverse direction (the thickness direction of the glass W). ) X is often bent.
[0008]
However, in the corner portion (joint portion) 70C of the molding 70, as can be understood from FIG. 16 showing the corner portion 70C viewed from the glass fitting groove side (wind glass side), the two The welding angles of the planned joining end portions 71a and 81a of the molding members 71 and 81, that is, the angles γ1 and γ2 of the cut surfaces 71b and 81b of the planned joining end portions 71a and 81a with respect to the glass fitting grooves 75 and 85 are substantially perpendicular. ing. Therefore, in the corner portion 70C of the molding 70, as shown in FIG. 17, the glass surface Wa and the decorative portions 72 and 82 of the molding members 71 and 81 are not parallel, and the appearance is deteriorated. There is a problem that the fitting properties between the glass fitting grooves 75 and 85 of the glass plates 71 and 81 and the window glass W, that is, the fitting properties between the molding 70 and the window glass W are poor. Further, when the corner portion 70C of the molding 70 is forcibly attached to the corner portion Wc of the window glass W, the so-called opening phenomenon in which the opening side of the glass fitting grooves 75 and 85 expands in the corner portion 70 of the molding 70. May occur, which is not preferable in appearance.
[0009]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and provides a structure of a corner portion of a wind molding that can be mounted on a wind glass having a corner portion that is three-dimensionally bent and has a good mounting property, and a molding method thereof. It is.
[0010]
[Means for Solving the Problems]
According to the first aspect of the present invention, there are two composites in which a leg portion projects from the back side of the decorative portion, and a protrusion that forms a glass fitting groove is formed between the leg portion and the back surface of the decorative portion. In the corner portion of the window molding formed by joining the planned end portions of the resin molding member obliquely with respect to the longitudinal direction of the molding member and joining the cut surfaces to each other, Each of the cut surfaces of the end portion is inclined inward of each molding member from the design surface side to the back side of the molding member, and the angle of the cutting surface with respect to the glass fitting groove is attached to the corner portion of the window molding. It is equal to the bending angle of the back direction at the corner portion of the glass, window molding des that as between those of the cut surface is pressed, characterized in that two molding members are joined According to the structure of the corners of the ring.
[0011]
The invention of claim 2 is characterized in that, in claim 1, the design surface at the joining position of the two molding members is shaped into a curved surface .
[0012]
Further, according to the invention of claim 3, a leg is projected on the back side of the decorative portion, and a protrusion that forms a glass fitting groove is formed on the side surface of the leg portion so as to project from the back surface of the decorative portion. A cutting step of cutting the joining end portions of the two synthetic resin molding members obliquely with respect to the longitudinal direction of the molding member, and holding the joining end portions of the two molding members in a pair of holding molds, A corner portion of a window molding having a melting and joining step of joining the two molding members by melting the joining end portions of the two molding members and then bringing the pair of holding dies close to each other and crimping the cut surfaces of the joining end portions. In the molding method, in the cutting step, the cut surfaces of the respective joining planned end portions are inclined inward of the molding member from the design surface side to the back side of the molding member, and the glass fitting grooves of the cutting surface The angle relative to To be equal to the bending angle of the back direction at the corner portion of the window glass mounting the corner portion of the Le, and cutting each predetermined joining end, during the fusion bonding step, the cut surfaces with each other in surface contact As described above, the present invention relates to a method for forming a corner portion of a window molding, characterized in that bonding end portions of two molding members are bonded by pressure bonding.
[0013]
Furthermore, the invention of claim 4 is the bonding of the molding member according to claim 3, wherein the pair of holding molds is a cavity mold in which a mold surface corresponding to the decorative portion side shape of the joining end portion of the molding member is formed, and the molding member. Each having a pressing die that presses the projected ridge side of the planned end, and the parting portions of the mold surfaces of the pair of cavity molds are formed so as to form a curved surface shape when the cavity molds are closed, In the melt-bonding step, the molding member is melted and joined in a state in which the decorative part surface of the joining planned end part of each molding member follows the curved surface shape part of the parting part of the mold surface of the cavity mold, The design surface at the joining position of the molding member is shaped into a curved surface .
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view showing the vicinity of a corner portion of a wind molding according to an embodiment of the present invention, FIG. 2 is a view of the vicinity of the corner portion of the wind molding as viewed from the glass fitting groove side, and FIG. FIG. 4 is a cross-sectional view taken along line bb in FIG. 3, FIG. 5 is a diagram showing a molding apparatus used in an example of a method for molding a corner portion of the wind molding, and FIG. FIG. 7 is a cross-sectional view showing a state in which the ends of two molding members are cut in the molding method, FIG. 7 is a cross-sectional view showing the case where the ends of the two molding members are similarly held and heated by a molding apparatus, and FIG. FIG. 9 is a cross-sectional view taken along the line ee in FIG. 7, FIG. 9 is a cross-sectional view showing when the ends of the two molding members are joined, and FIG. 10 is a cross-sectional view taken along the line ff in FIG. Sectional view, FIG. Near the corner portion of the window molding according to 施例 a view as seen from the glass fitting groove side.
[0015]
The wind molding 10 according to one embodiment of the present invention shown in FIGS. 1 to 3 includes a wind glass W in which the corner portion Wc described with reference to FIGS. 15 and 16 in the prior art section is bent three-dimensionally. It is to be installed around The window molding 10 is formed by joining the planned joining ends 11a and 21a of two synthetic resin molding members 11 and 21 extruded to have a predetermined cross-sectional shape at a predetermined corner angle φ (see FIG. 3). The corner portion 10C is made. 2 is a view of the vicinity of the corner portion 10C of the molding 10 as seen from the glass fitting groove side, that is, as seen from the direction of arrow a in FIG.
[0016]
The synthetic resin molding members 11 and 21 are made of a synthetic resin material such as polyvinyl chloride (PVC), and include decorative portions 12 and 22 constituting a design surface, and leg portions 13 and 23 projecting on the back side thereof. have. In addition, metal legs 14 and 24 for increasing the rigidity of the legs 13 and 23 are embedded in the legs 13 and 23, and the ridges 15 and 25 are provided on the side surface on the wind glass side. The glass fitting grooves 16 and 26 for fitting to the wind glass W are formed between the surface of the protrusions 15 and 25 and the back surface of the decorative portions 12 and 22. The width of the glass fitting grooves 16 and 26 is determined in consideration of the thickness of the window glass W.
[0017]
In the example shown in the figure, the two molding members 11 and 21 have an irregular cross-sectional shape, and the molding member 11 on the left side of the figure has a lip 17 on the side surface opposite to the protrusion 15 of the leg portion 13. The right molding member 21 is not formed with the lip as described above. When the molding member 11 is mounted around the window glass W, the lip 17 is brought into pressure contact with the standing surface Pa of the vehicle body panel P as shown in FIG. The gap between the standing surface Pa and the leg portion 13 is sealed, and a concave groove for rain gutter is formed on the side surface of the leg portion 13 between the lip 17 and the decorative portion 12. In the illustrated example, the ridge 25 of the right molding member 21 is longer than the ridge 15 of the left molding member 11. Of course, the present invention is not limited to the case where the two molding members 11 and 21 have an irregular cross-sectional shape as described above, but can also be applied to a case where both molding members have the same cross-sectional shape. The code | symbol G in FIG. 3 is the adhesive agent for adhere | attaching the molding member 11, the window glass W, and the vehicle body panel P. In FIG.
[0018]
And the joining plan end parts 11a and 21a of the two molding members 11 and 21 are cut obliquely with respect to the longitudinal direction of the molding member, and the cut surfaces 11b and 21b are joined and joined (welded). Thus, the corner portion 10C of the molding 10 having the corner angle φ is formed.
[0019]
Incidentally, in the corner portion 10C of the molding 10 according to the present invention, as can be understood from FIG. 2, the cut surfaces 11b, 21b of the respective planned joining end portions 11a, 21a are designed surfaces (decorative portion surfaces 12s, 22s). Inclined inward (in the direction of arrows Y1 and Y2 in the figure) of the molding members 11 and 21 from the side toward the back side (projection back surfaces 15s and 25s side) so that the cut surfaces 11b and 21b are pressure-bonded to each other. Thus, the two molding members 11 and 21 are joined. Therefore, the welding surfaces of the molding members 11 and 21, that is, the angles (welding angles) α1 and α2 of the cut surfaces 11b and 21b with respect to the glass fitting grooves 16 and 26 are both greater than 90 °. The angles α1 and α2 are determined to be the same as the bending angles θ1 and θ2 (see FIG. 16) in the reverse direction at the corner portion Wc of the windshield W. If comprised in this way, in the corner part (joining part) 10C of the said molding 10, ie, the joining position Z of the two molding members 11 and 21, and its periphery, the decoration parts 12 and 22 and the glass fitting grooves 16 and 26 are formed. In addition, since it is substantially parallel to the glass surface Wa of the corner portion Wc of the window glass W, the appearance is improved, and the corner portion 10C of the molding 10 can smoothly and reliably follow the corner portion Wc of the window glass W. It is possible to improve both of the mountability (fitness) dramatically compared to the conventional one. In addition, when the molding 10 is mounted on the window glass W, a so-called opening phenomenon occurs in which excessive stress does not act on the molding members 11 and 21 and the opening side of the glass fitting groove 85 expands as in the prior art. Can be prevented.
[0020]
Here, like the corner portion 50C of the molding 50 shown in FIG. 11 as another embodiment of the present invention, the cut surfaces 11b and 21b of the joint end portions 11a and 21a of the two molding members 11 and 21 are inclined, When both molding members 11 and 21 are joined without taking any measures as they are, it is possible to avoid the protruding portion (pointed portion) T from appearing on the design surface at the joining position of the two molding members 11 and 21. Absent. Therefore, in the embodiment shown in FIGS. 1 to 3, as in the invention defined in claim 2, the design surface (the surfaces 12 s and 22 s of the decorative portions 12 and 22) at the joining position of the two molding members 11 and 21. Is shaped into a curved surface shape (R shape) R. If it does in this way, the protrusion of the design surface in the said joining position can be eliminated, and an external appearance will become still better.
[0021]
Hereinafter, as an example of the method for forming the corner portion of the wind molding disclosed herein, the corner portion 10C of the molding 10 shown in FIGS. 1 to 3 is formed using the molding apparatus 30 shown in each drawing of FIG. This will be described in detail by taking as an example. The molding apparatus 30 will be described. The molding apparatus 30 includes a pair of holding molds 31 and 41 that can be divided and combined. 5, (A) is a perspective view showing the molding device 30 in the open state, (B) is a view of the molding device 30 in the closed state as viewed from the direction of arrow c in (A), and (C) is in the closed state. It is sectional drawing which cut | disconnected the shaping | molding apparatus 30 of 5 along the dd line | wire of (A). Further, the holding mold 31 on the right side in the figure holds the molding member 11 having the lip 17, while the holding mold 41 on the left side in the figure holds the molding member 21 without the lip. is there.
[0022]
The holding molds 31 and 41 are joined to cavity molds 32 and 42 in which mold surfaces 33 and 43 corresponding to the decorative part side shapes of the joining end portions 11a and 21a of the molding members 11 and 21 are formed in a groove shape. There are provided pressing dies 35 and 45 for pressing the projected ends of the planned ends 11a and 21a, respectively. Here, the mold surfaces 33 and 43 of the cavity molds 32 and 42 are formed at predetermined processing angles ω1 and ω2 with respect to the opposed surfaces 34 and 44 of the cavity molds 32 and 42 facing each other. The angles ω1 and ω2 are determined in consideration of the corner angle φ of the corner portion 10C of the molding 10 so as to satisfy the relationship of ω1 + ω2 = φ. Further, as can be understood from FIG. 5B, the mold surfaces 33 and 43 of the cavity molds 32 and 42 approach the parting portions 33p and 43p in which the vicinity of the joining position of both molding members is accommodated. It is inclined to be deep. The inclination angles β1 and β2 are determined to be the same as the bending angles θ1 and θ2 (see FIG. 16) in the reverse direction of the corner portion Wc of the window glass W. If the mold surfaces 33 and 43 of the cavity molds 32 and 42 are formed in this way, when the expected joining end portions 11a and 21a of the molding members 11 and 21 are placed on the mold surfaces 33 and 43, the bonding is performed. The cut surfaces 11b and 21b of the planned end portions 11a and 21a are parallel to each other, and the cut surfaces 11b and 21b come into surface contact with each other easily in the later-described melt bonding process. Further, as understood from FIG. 5C, the mold surfaces 33 and 43 of the cavity molds 32 and 42 are parted when the cavity molds 32 and 42 are closed. The portions 33p and 43p and the peripheral portion thereof are formed to form a smooth curved surface shape Q.
[0023]
The molding method of the corner portion of the molding has a cutting process and a melt bonding process. First, in the cutting step, as shown in FIG. 6, the joint end portions 11 a and 21 a of at least two synthetic resin molding members 11 and 21 extruded to a predetermined length are appropriately cut with a cutting tool such as a cutter. Cut obliquely with respect to the longitudinal direction of the molding member. At this time, as shown in the drawing, the cut surfaces 11b, 21b of the respective joining planned end portions 11a, 21a are molded from the design surface (decorative portion surface 12s, 22s) side toward the back surface (projection back surface 15s, 25s) side. The members 11 and 21 are inclined inward.
[0024]
In the next melt-bonding step, first, as shown in FIGS. 7 and 8, the pair of holding dies 31 and 41 that are in contact with each other are placed on the mold surfaces 33 and 43 of the cavity dies 32 and 42, respectively. After mounting the planned joining end portions 11a and 21a of the two molding members 11 and 21, respectively, the cavity molds 32 and 42 and the pressing molds 35 and 45 in the holding molds 31 and 41 are closed to correspond to each other. Between the cavity molds 32 and 42 and the pressing molds 35 and 45, the joint end portions 11a and 21a of the molding members 11 and 21 are sandwiched and held, respectively. At this time, the cut surfaces 11b and 21b of the respective joining end portions 11a and 21a are in a parallel state apart from each other, and the respective joining end portions 11a and 21a are slightly from the facing surfaces 34 and 44 of the cavity molds 32 and 42, respectively. To protrude.
[0025]
Next, the joining end portions 11a and 21a of the molding members 11 and 21 are held in the pair of holding dies 31 and 41 and are brought close to the heater H to be softened by heating and melted. The heating temperature is appropriately determined in consideration of the material of the molding members 11 and 21 and the like.
[0026]
Then, when the planned joining end portions 11a and 21a of the molding members 11 and 21 are softened and melted by the heating, the holding molds 31 and 41 facing each other are brought close to each other as shown in FIGS. The cut surfaces 11b and 21b of the end portions 11a and 21a are pressed together to join and integrate the two molding members 11 and 21. Here, this joining (welding) is performed such that the cut surfaces 11b and 21b of the respective planned joining end portions 11a and 21a are in surface contact with each other. In addition, the joining is performed by causing the molding positions 33 and 43 of the cavity molds 32 and 42 to follow the curved portions Q of the molding members 11 and 21 and the decorative surface 12s and 22s at the periphery thereof. Thus, the decorative surface 12s, 22s (design surface) is shaped into a smooth curved surface shape R at the joining position.
[0027]
Then, if the molding apparatus 30 which has been closed is opened, the product is removed from the mold, and excess resin (burrs) generated around the joining position of the molding members 11 and 21 during the melt joining process is cut out as shown in FIG. A corner portion 10C of the molding 10 is obtained. A blade portion (not shown) is projected along the periphery of the mold surfaces (openings) 33 and 43 of the opposed surfaces 34 and 44 of the opposed holding dies 31 and 41 (cavity dies 32 and 42), and the blade portions. Thus, the excess resin may be cut and removed simultaneously with the joining of the molding member.
[0028]
【The invention's effect】
As illustrated and described above, according to the structure of the corner portion of the wind molding in the invention of claim 1, the cut surfaces of the joining end portions of the two opposing molding members face each molding from the design surface side to the back side. The angle of the cut surface with respect to the glass fitting groove inclined to the inside of each member is equal to the bending angle in the reverse direction at the corner portion of the wind glass to which the corner portion of the wind molding is attached, and the cut surfaces are Since the two molding members are bonded to each other, after the molding is attached to the wind glass, the decorative portion and the glass fitting groove at the corner of the molding are bent three-dimensionally in the wind glass. The appearance is very good because it is almost parallel to the glass surface of the corner. Moreover, the corner part of the said window molding can be made to follow the corner part of a wind glass smoothly and reliably, and the mounting | wearing property of both improves dramatically compared with the past. In addition, if the design surface at the joining position of the molding member is shaped into a curved surface as in the invention of claim 2, the appearance of the protruding portion on the design surface at the joining position of the molding member can be avoided. The appearance is further improved.
[0029]
Further, according to the invention of the molding method described in claims 3 and 4, the corner portion of the window molding that can be mounted with good appearance and good mounting property on the wind glass having the corner portion bent three-dimensionally as described above is extremely provided. It can be easily molded. In addition, the structure of the apparatus used for the molding method is simple and economical. In particular, according to the invention of claim 4, the corner portion of the wind molding in which the design surface of the joining position of the molding member defined in claim 2 has a curved shape can be easily formed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the vicinity of a corner portion of a wind molding according to an embodiment of the present invention.
FIG. 2 is a view of the vicinity of a corner portion of the same wind molding as viewed from the glass fitting groove side.
FIG. 3 is a plan view showing a usage state of the wind molding.
4 is a cross-sectional view taken along the line bb in FIG. 3. FIG.
FIG. 5 is a view showing a forming apparatus used in an example of a method for forming a corner portion of the same wind molding.
FIG. 6 is a cross-sectional view showing a state in which ends of two molding members are cut in the molding method.
FIG. 7 is a cross-sectional view showing a case where the ends of two molding members are similarly held and heated by a molding apparatus.
8 is a cross-sectional view taken along line ee of FIG.
FIG. 9 is a cross-sectional view showing a case where the ends of two molding members are joined together.
10 is a cross-sectional view taken along line ff of FIG.
FIG. 11 is a view of the vicinity of a corner portion of a wind molding according to another embodiment when viewed from the glass fitting groove side.
FIG. 12 is a perspective view showing a front window of a general automobile.
FIG. 13 is a perspective view showing the vicinity of a corner portion of a conventional wind molding.
FIG. 14 is a cross-sectional view showing an example of a conventional molding method for wind molding.
FIG. 15 is a partial perspective view showing a window glass having a corner portion bent three-dimensionally.
FIG. 16 is a view of the vicinity of a corner portion of a conventional wind molding as viewed from the glass fitting groove side.
FIG. 17 is a sectional view showing a usage state of the same wind molding.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Wind molding 10C Corner part of wind molding 11, 21 Mold member 11a, 21a Joining end part 11b, 21b Cut surface of joining joining end part 12, 22 Decoration part of molding member 12s, 22s Decoration part surface (design) surface)
13, 23 Mold member legs 15, 25 Mold member protrusion 16, 26 Mold member glass fitting groove 30 Molding device 31, 41 Holding mold 32, 42 Cavity mold 33, 43 Cavity mold surface 33p, 43p Cavity mold parting part 35,45 Pressing type R Smooth curved surface shape of the design surface at the joining position of molding member W Wind glass Wc Corner part of wind glass

Claims (4)

装飾部の裏側に脚部が突設され、該脚部の側面に前記装飾部裏面との間でガラス嵌着溝を形成する突条が突出形成された二つの合成樹脂製モール部材の接合予定端部が、モール部材の長手方向に対して斜めに切断され、その切断面同士が合わされて接合されることにより構成されるウィンドモールディングのコーナー部において、
前記各接合予定端部の切断面（１１ｂ、２１ｂ）のそれぞれがモール部材の意匠面側から裏側に向かって各モール部材の内方へ傾斜して前記切断面（１１ｂ、２１ｂ）のガラス嵌着溝（１６、２６）に対する角度（α１、α２）が当該ウィンドモールのコーナー部を装着するウィンドガラスのコーナー部における裏方向への曲げ角度（θ１、θ２）と等しくされ、それらの切断面同士が圧着されるようにして二つのモール部材が接合されていることを特徴とするウィンドモールディングのコーナー部の構造。Legs projecting on the back side of the decorative part, and two synthetic resin molding members scheduled to protrude on the side of the leg part to form a glass fitting groove between the decorative part back surface In the corner portion of the window molding, the end portion is cut obliquely with respect to the longitudinal direction of the molding member and the cut surfaces are joined and joined together.
Each of the cut surfaces (11b, 21b) of each of the planned joining end portions is inclined inward of each molding member from the design surface side to the back side of the molding member, and the glass fitting of the cutting surfaces (11b, 21b) is performed. The angles (α1, α2) with respect to the grooves (16, 26) are made equal to the bending angles (θ1, θ2) in the reverse direction at the corners of the windshield on which the corners of the wind molding are mounted, and the cut surfaces thereof are A structure of a corner portion of a window molding, wherein two molding members are joined so as to be crimped. 二つのモール部材の接合位置の意匠面が曲面形状に賦形されていることを特徴とする請求項１に記載のウィンドモールディングのコーナー部の構造。The structure of the corner portion of the wind molding according to claim 1, wherein the design surface of the joining position of the two molding members is shaped into a curved surface . 装飾部の裏側に脚部が突設され、該脚部の側面に前記装飾部裏面との間でガラス嵌着溝を形成する突条が突出形成された二つの合成樹脂製モール部材の接合予定端部を、モール部材の長手方向に対して斜めに切断する切断工程と、一対の保持型に前記二つのモール部材の接合予定端部をそれぞれ保持し、該二つのモール部材の接合予定端部を溶融した後、前記一対の保持型を近接させて各接合予定端部の切断面同士を圧着することにより接合する溶融接合工程とを有するウィンドモールディングのコーナー部の成形方法において、
前記切断工程の際に、前記各接合予定端部の切断面（１１ｂ、２１ｂ）がモール部材の意匠面側から裏側に向かってモール部材の内方へ傾斜して前記切断面（１１ｂ、２１ｂ）のガラス嵌着溝（１６、２６）に対する角度（α１、α２）が当該ウィンドモールのコーナー部を装着するウィンドガラスのコーナー部における裏方向への曲げ角度（θ１、θ２）と等しくなるように、各接合予定端部を切断し、前記溶融接合工程の際に、前記切断面同士が面接触するように二つのモール部材の接合予定端部を圧着して接合することを特徴とするウィンドモールディングのコーナー部の成形方法。Legs projecting on the back side of the decorative part, and two synthetic resin molding members scheduled to protrude on the side of the leg part to form a glass fitting groove between the decorative part back surface A cutting step of cutting the end portion obliquely with respect to the longitudinal direction of the molding member, and holding the joint end portions of the two molding members to the pair of holding molds, respectively, In the molding method of the corner portion of the window molding having a melting and joining step of joining by cutting the cut surfaces of the respective joining planned end portions by bringing the pair of holding dies close to each other,
During the cutting step, the cut surfaces (11b, 21b) of the respective joining planned end portions are inclined inwardly of the molding member from the design surface side to the back side of the molding member and the cutting surfaces (11b, 21b). The angle (α1, α2) with respect to the glass fitting groove (16, 26) is equal to the bending angle (θ1, θ2) in the reverse direction at the corner portion of the wind glass on which the corner portion of the window molding is mounted . A wind molding characterized in that each joint end is cut, and in the melt-bonding step, the joint end of the two molding members is crimped and joined so that the cut surfaces are in surface contact with each other. Corner part molding method. 一対の保持型が、モール部材の接合予定端部の装飾部側形状に対応した型面が形成されたキャビティ型と、モール部材の接合予定端部の突条側を押圧する押圧型とをそれぞれ備え、前記一対のキャビティ型の型面のパーティング部が、該キャビティ型間を閉じたときに曲面形状を構成するように形成され、
溶融接合工程の際に、前記キャビティ型の型面のパーティング部の曲面形状部分に各モール部材の接合予定端部の装飾部表面を追従させた状態で、モール部材の溶融及び接合を行い、該モール部材の接合位置の意匠面を曲面形状に賦形することを特徴とする請求項３に記載のウィンドモールディングのコーナー部の成形方法。A pair of holding molds each include a cavity mold in which a mold surface corresponding to the shape of the decorative part at the end of the molding member to be bonded is formed, and a pressing mold that presses the protruding side of the end of the molding member to be bonded. And the parting portions of the mold surfaces of the pair of cavity molds are formed to form a curved shape when the cavity molds are closed,
In the melt-bonding step, the molding member is melted and joined in a state in which the decorative part surface of the joining planned end part of each molding member follows the curved surface shape part of the parting part of the mold surface of the cavity mold, 4. The method of forming a corner portion of a wind molding according to claim 3, wherein the design surface of the molding member joining position is shaped into a curved surface .
JP2000121254A 2000-04-21 2000-04-21 Wind molding corner structure and molding method Expired - Fee Related JP4390120B2 (en)

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