JP4824200B2

JP4824200B2 - Interior lining component for automobile having decoration member, method for integrally molding the same, and apparatus therefor

Info

Publication number: JP4824200B2
Application number: JP2001164146A
Authority: JP
Inventors: 浩之池上
Original assignee: TS Tech Co Ltd
Current assignee: TS Tech Co Ltd
Priority date: 2001-05-31
Filing date: 2001-05-31
Publication date: 2011-11-30
Anticipated expiration: 2021-05-31
Also published as: JP2002355844A

Description

【０００１】
【発明の属する技術分野】
本発明は加飾部材を備えた自動車用内装ライニング部品及びそれを一体成形する方法及びその装置に係り、特に、加飾部材の縁と基材等の表面材との間の間隙を狭く見せて外観商品性の向上を図った加飾部材を備えた自動車用内装ライニング部品及びそれを一体成形する方法及びその装置の改良に関する。
【０００２】
【従来の技術】
従来から、成形樹脂の一部に他の部材からなる加飾部材を一体成形する技術が知られている。例えば加飾部材を用いた成形樹脂の例としては、ドアトリム等の自動車用内装ライニング部品や、その他成形された樹脂に部分的な加飾部材を用いたものが知られている。
【０００３】
これらの加飾部材は、予め成形金型に装着した後で溶融樹脂を注入して、成形樹脂と加飾部材とを一体成形している。
具体的には、図４で示すように、熱可塑性樹脂等からなる基材１１１に、真空成形等で表皮材１１２を貼り合わせて表面材本体１１０を形成し、圧着型１３０側へセットする。一方、布等の加飾部材１２０は、プリフォ−ム若しくは真空引きにより金型１４０に対して位置決めしてセットする。そして、成型金型１３０及び１４０を型締めして表面材本体１１０へ加飾部材１２０を接合固定する。
【０００４】
このように予め成形された表面材本体１１０に加飾部材１２０を接合固定する場合には、加飾部材１２０を金型１４０の木目込みバー１５０に沿わせて加飾部材１２０の端縁処理を行っているので、加飾部材１２０が装着された後、表面材本体１１０の溝部に隙間ができることになる。そのため、加飾部材１２０の端縁部の見切りラインのずれが発生し、見栄えが悪くなるという不都合がある。また、加飾部材１２０と表面材本体１１０との接合のために、接着剤を用いており、この接合のための接着剤を、表面材本体１１０の表面に塗布するようにしているが、端縁部処理のための溝部内に接着剤の塗布が困難で、接着性の点でも問題が残るという不都合があった。
【０００５】
このため、図５で示すように、圧着下型２１５の上側に基材となる樹脂を、溶融した状態で配置し、圧着上型２１４と圧着下型２１５とによる圧着成形によって表面材（この例ではドアトリム）が成形されると同時に、木目込み部（木目込みバ−）２１６によって表面材２１３の木目込みを行う技術が提案されている（例えば特開平５−１６１６３号公報参照）。つまり、圧着上型２１４には、木目込み部２１６（木目込みバ−）が突設され、そして、圧着下型２１５には、木目込みを行うための溝部２１７，２１７と、基材となる樹脂（例えばポリプロピレン）を、溶融状態で射出するための樹脂射出用ゲ−ト２１８，２１８，２１８が相互に所定間隔を存して形成されている。そして、樹脂射出ゲ−ト２１８，２１８，２１８より、基材の成形に必要な所定量の樹脂２１９，２１９，２１９が射出され、圧着下型２１５の上側に、基材となる樹脂２１９が溶融した状態で配置されるようにしている。なお、符号２１３は２層構造体であり、この２層構造体（加飾部材）２１３は表皮材２１１の表面側の所定位置に、接着剤などを介して布部材２１２を貼り合わせている。
【０００６】
【発明が解決しようとする課題】
しかし、上述のような成形と同時に加飾部材を接合する技術は、表面材と加飾部材との境界部分に溝部を形成し、この溝部に木目込みバーによって加飾部材の縁を木目込むように構成しているために、図６で示すように、加飾部材Ｋが起毛部Ｋ１或いはクッション層Ｋ２を備えている場合、木目込み部（木目込みバー）２１６によって加飾部材Ｋの起毛部Ｋ１や加飾部材Ｋのクッション層Ｋ２が潰れてしまい、溝部２１７が外観に現れてしまう（溝ができてしまう）という不都合がある。
【０００７】
これを避けるため、溝を狭くして商品性を向上させようとすると、図７で示すように、金型の木目込みバー２１６自体を図７（イ）の状態から図７（ロ）のように、細くする必要があるが、このように木目込みバー２１６を細くすると、図７（ハ）で示すように、木目込みバー２１６が折れたり、破損するおそれがある。また、この木目込みバー２１６と溝部２１７との調整は、非常に困難であり、加飾部材Ｋの材質を代えるなどの対案を必要とし、例えば、布地に高価なウレタンをラミネートした加飾部材等を使用する必要があった。このように高価なウレタンをラミネートした加飾部材であっても、図８で示すように、溝部２１７の幅を若干狭くすることは可能であっても、加飾部材Ｋの起毛部Ｋ１や加飾部材Ｋのクッション層Ｋ２が潰れてしまうことは避けることが困難であった。
【０００８】
本発明の目的は、木目込みバーを備えた型はそのままにして、木目込みバーの強度を確保した太さとしているにも拘わらず、溝を露見させない加飾部材を備えた自動車用内装ライニング部品及びそれを一体成形する方法及びその装置を提供することにある。
本発明の他の目的は、木目込みバーと溝部との調整を不要とし、製品の商品性の向上を行うことが可能な加飾部材を備えた自動車用内装ライニング部品及びそれを一体成形する方法及びその装置を提供することにある。
【０００９】
前記課題は、本発明の自動車用内装ライニング部品に加飾部材を一体成形する方法によれば、上下又は左右方向に型開きする金型内に、少なくとも起毛又はクッション層を備えた加飾部材を配置して樹脂を注入して表面材とし、該表面材の一部に前記加飾部材を一体成形する、自動車用内装ライニング部品に加飾部材を一体成形する方法において、前記加飾部材側に位置する金型に突出して形成された前記加飾部材の縁に対応した木目込みバーと、前記木目込みバーに対応して溝部が形成された表面材側に位置する金型とで、少なくとも前記溝部近傍の表面材の樹脂温度が他の部位の樹脂温度より高い状態で、前記加飾部材の縁を前記木目込みバーによって、前記表面材の溝部に木目込み、前記溝部近傍の樹脂温度が他の部位の樹脂温度より高い状態は、前記表面材の溝部の、前記木目込みバーとの間で前記加飾部材を挟む側の立ち壁部位の樹脂肉厚を、他の部位の樹脂肉厚よりも大きくすることにより達成し、前記加飾部材の縁を前記表面材の溝部に木目込む際には、前記木目込みバーと前記溝部との間で前記加飾部材を厚み方向に圧縮し、前記金型を型開きして前記木目込みバーを前記溝部から引き抜き、圧縮された前記加飾部材の厚みを前記溝部近傍の表面材からの熱にて復元させることによって解決される。
【００１０】
以上のように、溝部近傍の表面材の樹脂温度が他の部位の樹脂温度より高い状態で、前記加飾部材の縁を前記木目込みバーによって、前記表面材の溝部に木目込むので、起毛、クッション層を備えた加飾部材は、木目込みバーによって表面材の溝部に木目込まれても、樹脂温度が高いために、クッション層、起毛部分が復元して、溝一杯に広がり、溝部の露見を防止することが可能となる。
【００１１】
また、前記課題は、本発明の自動車用内装ライニング部品に加飾部材を一体成形する装置によれば、上下又は左右方向に型開きする金型内に、少なくとも起毛又はクッション層を備えた加飾部材を配置して樹脂を注入して表面材とし、該表面材の一部に前記加飾部材を一体成形する、自動車用内装ライニング部品に加飾部材を一体成形する装置において、前記加飾部材側に位置する金型には、前記加飾部材の縁に対応した木目込みバーが突出して形成され、前記木目込みバーに対応して溝部が形成された表面材側に位置する金型から構成されるものであって、前記表面材側に位置する金型のうち、前記溝部の、前記木目込みバーとの間で前記加飾部材を挟む側の立ち壁部位に相当するキャビティ部位のみを、型締め時において他のキャビティ部位より大きな空間部として形成したことにより解決される。
【００１２】
前記課題は、本発明の自動車用内装ライニング部品によれば、少なくとも起毛又はクッション層を備えた加飾部材の縁側を表面材の溝部に木目込んで前記加飾部材と表面材を一体成形してなる自動車用内装ライニング部品において、前記表面材の溝部のうち、金型に形成された木目込みバーによって前記加飾部材の縁側を表面材の溝部に木目込む際に前記木目込みバーとの間で前記加飾部材を挟む側の立ち壁部位の樹脂肉厚を他の部位の樹脂肉厚より大きくしてなることを特徴とする加飾部材を一体成形してなること、により解決される。
【００１３】
このように表面材の溝部の、木目込みバーとの間で加飾部材を挟む側の立ち壁部位を厚肉に形成することにより、溝部近傍の樹脂温度が他の部位の樹脂温度より高い状態とすることが可能となり、従来の木目込みバー側の金型はそのままにして、上記立ち壁部だけを肉厚にするだけで済み、安価な構成とすることが可能となる。
【００１４】
【発明の実施の形態】
以下、本発明の一実施の形態を図面に基づいて説明する。なお、以下に説明する部材，配置等は本発明を限定するものでなく、本発明の趣旨の範囲内で種々改変することができるものである。
【００１５】
図１乃至図３は本発明の一実施例を示すものであり、図１は自動車用内装ライニング部品に加飾部材を一体成形した状態を示す概略斜視図、図２は製造装置の金型を型締めした状態を示す部分断面図、図３は製造装置の金型を型開きした状態を示す部分断面図である。
【００１６】
本発明の自動車用内装ライニング部品Ｓは、少なくとも起毛又はクッション層を備えた加飾部材の縁側を表面材の溝部に木目込んで前記加飾部材と表面材を一体成形してなる自動車用内装ライニング部品である。そして表面材（基材）１０の溝部１１の立ち壁部位１２の樹脂肉厚を他の部位より大きくしている。表面材（基材）１０としてポリプロピレン（ｐｐ）を用いており、加飾部材２０として起毛２１ａを備えたファブリック２１と、このファブリック２１と表皮材２２とから構成され、表皮材２２にはクッション層２３が設けられている。このように加飾部材２０としては、少なくとも起毛２１ａ又はクッション層２３を備えている必要がある。一般に、起毛２１ａは表面側であり、クッション層２３は表皮材２２に積層されて裏側に接合される。
【００１７】
金型３０，４０としては、上下方向に型開きする金型、左右方向に型開きする金型のいずれの金型を用いても良いが、このような金型３０，４０を用いて、型締めしたときに、金型内に、加飾部材２０を配置して樹脂を注入して表面材１０とし、この表面材１０の一部に加飾部材２０を一体成形する自動車用内装ライニング部品Ｓに加飾部材２０を一体成形する装置である。
【００１８】
この装置には不図示のゲートが設けられ、このゲートは、表面材（基材）となる樹脂（例えばポリプロピレン）を、溶融状態で射出するもので、相互に所定間隔をおいて形成されている。ゲートは射出成形機から供給される溶融樹脂を金型３０，４０で形成されるキャビティ内へ供給するようになっている。また、加飾部材２０の配置は、樹脂供給側の金型に対向する金型に保持するように構成してもよい。図５で示す従来例のように、金型の両側で保持するように構成してもよい。
【００１９】
本例の加飾部材２０側に位置する金型４０には、加飾部材２０の縁２０ａに対応した木目込みバー４１が突出して形成されている。この木目込みバー４１の構成は従来技術と同様に構成することができる。
【００２０】
一方、表面材１０側に位置する他の金型３０は、木目込みバー４１に対応して凹部３１が形成されている。そして、表面材１０側に位置する金型３０で、加飾部材２０が押し込まれる溝部１１の立ち壁部１２に相当するキャビティ部位３２を、型締め時において他のキャビティ部位より大きな空間を持ったキャビティ部位３２として形成したものである。
【００２１】
つまり、従来は、表面材１０の厚さの２倍に、表面材１０に形成される溝部１１の幅を加算したものがキャビティ部位であったが、本発明では、加飾部材２０が配設される側のキャビティ部位３２が、表面材１０の厚さの２倍＋ｔに、表面材１０に形成される溝部１１の幅を加算した空間部が形成されているものである。
したがって、加飾部材２０が押し込まれる表面材１０の立ち壁部１２が他の部位よりも厚肉（図３の厚さｔだけ肉厚）に形成されることになる。
【００２２】
そして、自動車用内装ライニング部品に加飾部材を一体成形する方法は、次のように行う。すなわち、樹脂射出ゲ−トから、表面材（基材）１０の成形に必要な所定量の樹脂が射出され、表面材１０側の金型３０上に、樹脂が溶融した状態で配置される。このとき、加飾部材２０側の金型４０は、成形予備高さまで下降している。
【００２３】
そして、図２で示すように、加飾部材２０側に位置する金型４０に突出して形成された木目込みバー４１と、この木目込みバー４１に対応して形成された凹部３１が形成された金型３０を型締めして、表面材１０を形成すると共に、加飾部材２０を表面材１０の溝部１１へ木目込みする。
【００２４】
そして表面材１０となる樹脂が固化し、この表面材１０と加飾部材２０が一体に成形され接合される。このとき、金型３０，４０のクリアランスが略一定であるので、成形時に供給される、表面材（基材）１０となる樹脂の樹脂圧（例えば３０Ｋｇ／ｃｍ^２）により、加飾部材２０が若干圧縮された状態となる。
【００２５】
成形終了後、図３に示すように、金型４０を上昇させ、木目込みバー４１を表面材１０の溝部１１から引き抜くと、加飾部材２０の復元力により、溝部１１の隙間が埋められるが、このとき、立ち壁部１２が他の部位より厚肉として成形されるため、この部分だけ他の部分より熱を持った状態となり、起毛２１ａやクッション層２３を膨出させて、より復元させることができ、表面材１０の溝部１１全体に膨らみ、溝部１１を隠蔽し、見栄えが向上する。
【００２６】
以上のように構成すると、樹脂による表面材１０の成形と、加飾部材２０の成形と、加飾部材２０の木目込みを同時に行うことができるので、設備および工程の削減が図れ、特に溝部１１における加飾部材２０の復元力が大きくでき、木目込みのために必要な溝部１１における隙間を隠蔽することができるので、見切りラインのズレを吸収でき、木目込み部の見栄えがより向上する。また、上記溝部１１における隙間が埋められるので、溝部１１の幅を従来に比して広くすることができ、加飾部材２０の表面材１０に対する位置決め精度を緩和することが可能となる。
【００２７】
【発明の効果】
上述したように、本発明によれば、表面材（基材）側の溝の立ち壁部を肉厚にすることにより、樹脂の熱が下がりずらくなり、加飾部材の表皮のクッション層は布地の毛がつぶれなくなる。
このように、本発明の加飾部材を備えた自動車用内装ライニング部品及びそれを一体成形する方法及びその装置によれば、木目込みバーを備えた型はそのままにして、木目込みバーの強度を確保した太さとしているにも拘わらず、溝を露見させなることなく、また同時に、木目込みバーと溝部との調整を不要とし、製品の商品性の向上を行うことが可能となる。
【図面の簡単な説明】
【図１】自動車用内装ライニング部品に加飾部材を一体成形した状態を示す概略斜視図である。
【図２】製造装置の金型を型締めした状態を示す部分断面図である。
【図３】製造装置の金型を型開きした状態を示す部分断面図である。
【図４】従来方法の説明図である。
【図５】従来方法の説明図である。
【図６】従来方法の説明図である。
【図７】木目込みバーを細くしたときの破損例を示す説明図である。
【図８】従来方法の説明図である。
【符号の説明】
１０表面材（基材）
１１溝部
１２立ち壁部
２０加飾部材
２０ａ縁
２１ファブリック
２１ａ起毛
２２表皮材
２３クッション層
３０，４０金型
３２キャビティ部位
４１木目込みバー４１[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an interior lining part for an automobile provided with a decorative member, a method for integrally molding the same, and an apparatus therefor, and in particular, shows a narrow gap between the edge of the decorative member and a surface material such as a base material. The present invention relates to an automotive interior lining part provided with a decorative member for improving appearance merchantability, a method for integrally molding the same, and an improvement of the apparatus.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a technique for integrally molding a decorative member made of another member on a part of a molded resin is known. For example, as an example of a molded resin using a decorative member, an interior lining part for an automobile such as a door trim, or a resin using a partially decorated member for a molded resin is known.
[0003]
These decorating members are integrally molded with the molding resin and the decorating member by injecting molten resin after being mounted in a molding die in advance.
Specifically, as shown in FIG. 4, a surface material body 110 is formed by bonding a skin material 112 to a base material 111 made of a thermoplastic resin or the like by vacuum forming or the like, and is set on the crimping die 130 side. On the other hand, the decorative member 120 such as cloth is positioned and set with respect to the mold 140 by preforming or vacuuming. Then, the molds 130 and 140 are clamped, and the decorative member 120 is bonded and fixed to the surface material body 110.
[0004]
When the decorative member 120 is bonded and fixed to the preformed surface material main body 110 in this way, the edge of the decorative member 120 is processed along the graining bar 150 of the mold 140 with the decorative member 120. Therefore, after the decorative member 120 is mounted, a gap is formed in the groove portion of the surface material main body 110. For this reason, there is a disadvantage in that the parting line of the edge portion of the decorative member 120 is shifted and the appearance is deteriorated. In addition, an adhesive is used for joining the decorative member 120 and the surface material body 110, and the adhesive for this joining is applied to the surface of the surface material body 110. There is a problem that it is difficult to apply an adhesive in the groove for edge processing, and there remains a problem in terms of adhesion.
[0005]
For this reason, as shown in FIG. 5, a resin serving as a base material is disposed in a molten state on the upper side of the press-fit lower mold 215, and a surface material (this example) is obtained by press-forming with a press-fit upper mold 214 and a press-fit lower mold 215. In this case, a technique has been proposed in which the surface material 213 is textured by the textured portion (wood textured bar) 216 at the same time as the door trim is formed (see, for example, JP-A-5-16163). In other words, the upper crimping die 214 is provided with a grained portion 216 (wood graining bar), and the lower crimping die 215 is provided with grooves 217 and 217 for graining and a resin (for example, polypropylene). ), The resin injection gates 218, 218, 218 for injection in a molten state are formed at predetermined intervals. Then, a predetermined amount of resin 219, 219, 219 required for molding the base material is injected from the resin injection gates 218, 218, 218, and the resin 219 serving as the base material is melted on the upper side of the press-fit lower mold 215. It is arranged so that Reference numeral 213 denotes a two-layer structure, and the two-layer structure (decorative member) 213 has a cloth member 212 bonded to a predetermined position on the surface side of the skin material 211 via an adhesive or the like.
[0006]
[Problems to be solved by the invention]
However, the technique for joining the decorative member simultaneously with the molding as described above is to form a groove at the boundary portion between the surface material and the decorative member, and so that the edge of the decorative member is cut into the groove with a wood grain bar. 6, when the decorative member K is provided with the raised portion K1 or the cushion layer K2, as shown in FIG. 6, the raised portion K1 and the decorative portion K1 of the decorative member K are added by the wood texture portion (wood texture bar) 216. There is an inconvenience that the cushion layer K2 of the decorative member K is crushed and the groove 217 appears on the appearance (a groove is formed).
[0007]
In order to avoid this, when trying to improve the merchantability by narrowing the groove, as shown in FIG. 7, the mold wood bar 216 itself is changed from the state of FIG. 7 (a) to FIG. 7 (b). However, if the wood grain bar 216 is thinned as described above, the wood grain bar 216 may be broken or broken as shown in FIG. In addition, the adjustment of the grained bar 216 and the groove portion 217 is very difficult and requires a counter measure such as changing the material of the decorative member K. For example, a decorative member obtained by laminating expensive urethane on a fabric is used. Had to be used. Even in such a decorative member laminated with expensive urethane, as shown in FIG. 8, even if the width of the groove 217 can be slightly reduced, It was difficult to avoid the cushion layer K2 of the decorative member K from being crushed.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide an interior lining part for an automobile having a decorative member that does not expose a groove, although the mold with the grained bar is left intact and the thickness of the grained bar is secured. It is an object of the present invention to provide a method and an apparatus for integrally molding a mold.
Another object of the present invention is to provide an interior lining component for an automobile having a decorative member that does not require adjustment of a grained bar and a groove and can improve the product quality of a product, and a method for integrally molding the same. It is to provide such a device.
[0009]
According to the method of integrally molding a decorative member on an interior lining part for automobiles of the present invention, the above-mentioned problem is that a decorative member provided with at least a raised or cushion layer in a mold that opens in the vertical or horizontal direction. In the method of integrally forming a decorative member on an interior lining part for an automobile, in which the decorative member is integrally formed on a part of the surface material by arranging and injecting a resin to form a surface material, on the decorative member side At least in the vicinity of the groove, at least in the vicinity of the groove portion, the wood-engraved bar corresponding to the edge of the decorative member formed projecting on the located mold, and the mold located on the surface material side corresponding to the wood-encased bar. In the state where the resin temperature of the surface material is higher than the resin temperature of the other part, the edge of the decorative member is wooded into the groove part of the surface material by the wood grain bar, and the resin temperature in the vicinity of the groove part is the resin of the other part Than temperature This state is achieved by making the resin wall thickness of the standing wall part on the side of the surface material groove between which the decorative member is sandwiched between the groove part of the surface material larger than the resin wall thickness of other parts. When the edge of the decorating member is grained into the groove portion of the surface material, the decorating member is compressed in the thickness direction between the wood embedding bar and the groove portion, the mold is opened, and the mold is opened. This is solved by pulling out the wood bar from the groove and restoring the compressed thickness of the decorative member by heat from the surface material near the groove .
[0010]
As described above, since the resin temperature of the surface material in the vicinity of the groove is higher than the resin temperature of other parts, the edge of the decorative member is textured into the groove of the surface material by the wood texture bar, so that the brushed and cushioned Even if the decorative member with a layer is cut into the groove of the surface material by the wood bar, the cushioning layer and the raised part are restored due to the high resin temperature, spreading to the groove and preventing the exposure of the groove It becomes possible to do.
[0011]
Further, according to the apparatus for integrally molding a decorative member on an automobile interior lining component of the present invention, the subject is a decoration provided with at least a brushed or cushion layer in a mold that opens in the vertical or horizontal direction. In the apparatus for integrally forming a decorative member in an interior lining part for an automobile, the decorative member is formed by injecting a resin by injecting a resin into a surface material and integrally forming the decorative member on a part of the surface material. The metal mold located on the side is formed of a metal mold located on the surface material side in which a grained bar corresponding to the edge of the decorative member is projected and formed with a groove corresponding to the grained bar. be those, among the molds located on the surface material side of the groove, only a cavity portion corresponding to the standing wall portion position of the side sandwiching the decorative member between said Kimekomi bar, clamping Other cavities in time It is solved by forming a larger space than position.
[0012]
According to the automotive interior lining component of the present invention, the subject is formed by integrally molding the decorative member and the surface material by embedding the edge side of the decorative member provided with at least a raised or cushion layer into the groove portion of the surface material. In the interior lining part for an automobile, the edge of the decorative member is grained into the groove of the surface material by the grained bar formed in the mold among the grooves of the surface material. This is solved by integrally forming a decorative member characterized in that the resin wall thickness of the standing wall portion on the side sandwiching the decorative member is made larger than the resin wall thickness of the other portion.
[0013]
Of the groove of the thus surface material, by forming a standing wall portion position of the side sandwiching a decorative member thicker, resin temperature of the grooves near the higher resin temperature of other sites state between Kimekomi bar Therefore, it is only necessary to increase the thickness of only the above-mentioned standing wall portion while leaving the conventional mold on the wood grain bar side as it is, and it is possible to obtain an inexpensive configuration.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The members, arrangements, and the like described below are not intended to limit the present invention and can be variously modified within the scope of the gist of the present invention.
[0015]
1 to 3 show an embodiment of the present invention. FIG. 1 is a schematic perspective view showing a state in which a decorative member is integrally formed with an interior lining part for an automobile. FIG. 2 shows a mold of a manufacturing apparatus. FIG. 3 is a partial cross-sectional view showing a state in which the mold of the manufacturing apparatus is opened.
[0016]
The automotive interior lining component S of the present invention is an automotive interior lining formed by integrally molding the decorative member and the surface material by embedding the edge side of the decorative member having at least a raised or cushion layer into the groove portion of the surface material. It is a part. And the resin thickness of the standing wall part 12 of the groove part 11 of the surface material (base material) 10 is made larger than other parts. Polypropylene (pp) is used as the surface material (base material) 10, and it is composed of a fabric 21 having raised hairs 21 a as the decorative member 20, and the fabric 21 and the skin material 22. The skin material 22 has a cushion layer. 23 is provided. As described above, the decorative member 20 needs to include at least the raised portions 21a or the cushion layer 23. In general, the raised portions 21a are on the front side, and the cushion layer 23 is laminated on the skin material 22 and joined to the back side.
[0017]
As the molds 30 and 40, any of a mold that opens in the vertical direction and a mold that opens in the left and right direction may be used. When tightened, the decorative member 20 is placed in the mold, and resin is injected into the surface material 10, and the interior member lining part S for automobile is integrally formed with a part of the surface material 10. It is the apparatus which integrally molds the decorating member 20.
[0018]
This apparatus is provided with a gate (not shown), and this gate is for injecting a resin (for example, polypropylene) as a surface material (base material) in a molten state, and is formed at a predetermined interval from each other. . The gate supplies molten resin supplied from an injection molding machine into a cavity formed by the molds 30 and 40. Moreover, you may comprise the arrangement | positioning of the decorating member 20 so that it may hold | maintain to the metal mold | die facing the metal mold | die at the side of resin supply. You may comprise so that it may hold | maintain on both sides of a metal mold | die like the prior art example shown in FIG.
[0019]
A wood grain bar 41 corresponding to the edge 20a of the decorating member 20 is formed on the mold 40 located on the decorating member 20 side in this example so as to protrude. The configuration of the wood grain bar 41 can be configured in the same manner as in the prior art.
[0020]
On the other hand, the other mold 30 located on the surface material 10 side has a recess 31 corresponding to the grained bar 41. And the cavity part 32 equivalent to the standing wall part 12 of the groove part 11 into which the decorating member 20 is pushed is provided with a larger space than other cavity parts at the time of mold clamping in the mold 30 located on the surface material 10 side. The cavity portion 32 is formed.
[0021]
That is, conventionally, the cavity portion is obtained by adding the width of the groove 11 formed in the surface material 10 to twice the thickness of the surface material 10, but in the present invention, the decorative member 20 is disposed. The cavity portion 32 on the side to be formed has a space portion obtained by adding the width of the groove portion 11 formed in the surface material 10 to twice the thickness of the surface material 10 + t.
Therefore, the standing wall portion 12 of the surface material 10 into which the decorating member 20 is pushed is formed thicker than other portions (thickness t in FIG. 3).
[0022]
And the method of integrally forming a decorating member on an automobile interior lining component is performed as follows. That is, a predetermined amount of resin necessary for molding the surface material (base material) 10 is injected from the resin injection gate, and placed on the mold 30 on the surface material 10 side in a molten state. At this time, the mold 40 on the decorative member 20 side is lowered to the preliminary molding height.
[0023]
And as shown in FIG. 2, the metal mold | die in which the recessed part 31 formed corresponding to this grained bar 41 and the grained bar 41 which protruded and formed in the metal mold | die 40 located in the decorating member 20 side was formed 30 is clamped to form the surface material 10, and the decorative member 20 is grained into the groove 11 of the surface material 10.
[0024]
And the resin used as the surface material 10 is solidified, and this surface material 10 and the decorating member 20 are integrally molded and joined. At this time, since the clearances of the molds 30 and 40 are substantially constant, the decorative member 20 is supplied by the resin pressure (for example, 30 Kg / cm ² ) of the resin to be the surface material (base material) 10 supplied at the time of molding. It is in a slightly compressed state.
[0025]
After the molding, as shown in FIG. 3, when the mold 40 is raised and the wood grain bar 41 is pulled out from the groove 11 of the surface material 10, the restoring force of the decorative member 20 fills the gap of the groove 11. At this time, since the standing wall portion 12 is formed to be thicker than other portions, only this portion has a heat from the other portions, and the raised portions 21a and the cushion layer 23 are bulged to be further restored. It swells to the whole groove part 11 of the surface material 10, conceals the groove part 11, and an appearance improves.
[0026]
If comprised as mentioned above, since shaping | molding of the surface material 10 by resin, shaping | molding of the decorating member 20, and graining of the decorating member 20 can be performed simultaneously, reduction of an installation and a process can be aimed at, especially in the groove part 11 Since the restoring force of the decorating member 20 can be increased and the gap in the groove 11 necessary for embedding the wood can be concealed, the shift of the parting line can be absorbed, and the appearance of the embossed portion can be further improved. Moreover, since the clearance gap in the said groove part 11 is filled, the width | variety of the groove part 11 can be enlarged compared with the past, and it becomes possible to ease the positioning accuracy with respect to the surface material 10 of the decorating member 20. FIG.
[0027]
【The invention's effect】
As described above, according to the present invention, by making the standing wall portion of the groove on the surface material (base material) side thick, the heat of the resin is less likely to decrease, and the cushion layer of the skin of the decorative member is The fabric hair will not be crushed.
Thus, according to the interior lining part for automobiles equipped with the decorative member of the present invention and the method and apparatus for integrally molding the interior lining part, the mold provided with the graining bar is left as it is, and the strength of the graining bar is ensured. In spite of the thickness, it is possible to improve the merchantability of the product without exposing the groove and, at the same time, eliminating the need to adjust the graining bar and the groove.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a state in which a decorative member is integrally formed with an interior lining part for an automobile.
FIG. 2 is a partial cross-sectional view showing a state in which a mold of a manufacturing apparatus is clamped.
FIG. 3 is a partial cross-sectional view showing a state in which the mold of the manufacturing apparatus is opened.
FIG. 4 is an explanatory diagram of a conventional method.
FIG. 5 is an explanatory diagram of a conventional method.
FIG. 6 is an explanatory diagram of a conventional method.
FIG. 7 is an explanatory diagram showing an example of breakage when a wood grain bar is thinned;
FIG. 8 is an explanatory diagram of a conventional method.
[Explanation of symbols]
10 Surface material (base material)
DESCRIPTION OF SYMBOLS 11 Groove part 12 Standing wall part 20 Decorating member 20a Edge 21 Fabric 21a Raising 22 Skin material 23 Cushion layers 30 and 40 Mold 32 Cavity part 41 Wood grain bar 41

Claims

上下又は左右方向に型開きする金型内に、少なくとも起毛又はクッション層を備えた加飾部材を配置して樹脂を注入して表面材とし、該表面材の一部に前記加飾部材を一体成形する、自動車用内装ライニング部品に加飾部材を一体成形する方法において、
前記加飾部材側に位置する金型に突出して形成された前記加飾部材の縁に対応した木目込みバーと、前記木目込みバーに対応して溝部が形成された表面材側に位置する金型とで、少なくとも前記溝部近傍の表面材の樹脂温度が他の部位の樹脂温度より高い状態で、前記加飾部材の縁を前記木目込みバーによって、前記表面材の溝部に木目込み、
前記溝部近傍の樹脂温度が他の部位の樹脂温度より高い状態は、前記表面材の溝部の、前記木目込みバーとの間で前記加飾部材を挟む側の立ち壁部位の樹脂肉厚を、他の部位の樹脂肉厚よりも大きくすることにより達成し、
前記加飾部材の縁を前記表面材の溝部に木目込む際には、前記木目込みバーと前記溝部との間で前記加飾部材を厚み方向に圧縮し、
前記金型を型開きして前記木目込みバーを前記溝部から引き抜き、圧縮された前記加飾部材の厚みを前記溝部近傍の表面材からの熱にて復元させることを特徴とする自動車用内装ライニング部品に加飾部材を一体成形する方法。A decorative member having at least a raised or cushion layer is placed in a mold that opens and closes in the vertical and horizontal directions, and a resin is injected to form a surface material. The decorative member is integrated with a part of the surface material. In the method of integrally molding the decorative member to the automotive interior lining part to be molded,
A grained bar corresponding to the edge of the decorative member formed protruding from the mold located on the decorative member side, and a mold located on the surface material side formed with a groove corresponding to the grained bar; Then, at least in the state where the resin temperature of the surface material near the groove is higher than the resin temperature of the other part, the edge of the decorative member is grained into the groove of the surface material by the wood grain bar,
The state where the resin temperature in the vicinity of the groove is higher than the resin temperature in the other part is that the resin wall thickness of the standing wall part on the side where the decorative member is sandwiched between the groove part of the surface material and the wood grain bar, etc. Achieved by making it larger than the resin wall thickness of
When graining the edge of the decorative member into the groove portion of the surface material, the decorative member is compressed in the thickness direction between the wood texture bar and the groove portion,
Opening the mold, pulling out the wood bar from the groove, and restoring the compressed thickness of the decorative member by heat from the surface material in the vicinity of the groove. A method of integrally molding a decorative member.

上下又は左右方向に型開きする金型内に、少なくとも起毛又はクッション層を備えた加飾部材を配置して樹脂を注入して表面材とし、該表面材の一部に前記加飾部材を一体成形する、自動車用内装ライニング部品に加飾部材を一体成形する装置において、
前記加飾部材側に位置する金型には、前記加飾部材の縁に対応した木目込みバーが突出して形成され、前記木目込みバーに対応して溝部が形成された表面材側に位置する金型から構成されるものであって、前記表面材側に位置する金型のうち、前記溝部の、前記木目込みバーとの間で前記加飾部材を挟む側の立ち壁部位に相当するキャビティ部位のみを、型締め時において他のキャビティ部位より大きな空間部として形成したことを特徴とする自動車用内装ライニング部品に加飾部材を一体成形する装置。A decorative member having at least a raised or cushion layer is placed in a mold that opens and closes in the vertical and horizontal directions, and a resin is injected to form a surface material. The decorative member is integrated with a part of the surface material. In an apparatus for integrally molding a decorative member to an automotive interior lining component to be molded,
The metal mold located on the decorative member side is formed by protruding a grained bar corresponding to the edge of the decorative member, and a mold located on the surface material side formed with a groove corresponding to the grained bar. Among the molds located on the surface material side, only the cavity portion corresponding to the standing wall portion on the side of the groove portion sandwiching the decorating member between the grooved bar An apparatus for integrally molding a decorative member to an interior lining part for an automobile, characterized in that it is formed as a larger space than other cavity parts during mold clamping.

少なくとも起毛又はクッション層を備えた加飾部材の縁側を表面材の溝部に木目込んで前記加飾部材と表面材を一体成形してなる自動車用内装ライニング部品において、前記表面材の溝部のうち、金型に形成された木目込みバーによって前記加飾部材の縁側を表面材の溝部に木目込む際に前記木目込みバーとの間で前記加飾部材を挟む側の立ち壁部位の樹脂肉厚を他の部位の樹脂肉厚より大きくしてなることを特徴とする加飾部材を一体成形してなる自動車用内装ライニング部品。 In an automotive interior lining part formed by integrally molding the decorative member and the surface material by embedding the edge side of the decorative member provided with at least a brushed or cushion layer into the groove portion of the surface material, among the groove portions of the surface material, When the edge side of the decorative member is put into the groove portion of the surface material by the wood-embedding bar formed on the mold, the resin wall thickness of the standing wall portion on the side sandwiching the decoration member between the wood-embedding bar is changed to another An automotive interior lining part formed by integrally molding a decorative member characterized by being larger than the resin thickness of the part.