JP6959709B2 - Resin panel parts and their manufacturing methods - Google Patents

Resin panel parts and their manufacturing methods Download PDF

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JP6959709B2
JP6959709B2 JP2017187848A JP2017187848A JP6959709B2 JP 6959709 B2 JP6959709 B2 JP 6959709B2 JP 2017187848 A JP2017187848 A JP 2017187848A JP 2017187848 A JP2017187848 A JP 2017187848A JP 6959709 B2 JP6959709 B2 JP 6959709B2
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panel
decorative member
molding
resin
decorative
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JP2019059213A (en
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真 永井
拓郎 東
隆史 大月
翼 沖野
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Daihatsu Motor Co Ltd
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Description

本発明は、樹脂パネル部品及びその製造方法に関する。 The present invention relates to resin panel parts and a method for manufacturing the same.

自動車のインストルメントパネル等の樹脂パネル部品は、見た目の高級感を高めるために様々な工夫がなされている。例えば、下記の特許文献１では、インストルメントパネルの意匠面に線状の加飾部材を設けた構成が示されている。この加飾部材は、インストルメントパネルのパネル本体とは別体に形成された後、パネル本体に取り付けられる。 Resin panel parts such as automobile instrument panels have been devised in various ways to enhance their appearance. For example, Patent Document 1 below shows a configuration in which a linear decorative member is provided on the design surface of an instrument panel. This decorative member is formed separately from the panel body of the instrument panel and then attached to the panel body.

特開２０１６−２１０３１４号公報Japanese Unexamined Patent Publication No. 2016-210314

しかし、上記の場合、パネル本体と加飾部材とをそれぞれ形成する工程や、加飾部材をパネル本体に取り付ける工程が必要となるため、工数が増え、製造コストが高くなる。特に、極細の加飾部材を設ける場合、上記のようにパネル本体と加飾部材とを別部品で形成すると、加飾部材自体の形成や、加飾部材をパネル本体に正確に取り付ける作業が非常に困難になるため、製造コストがさらに高くなる。 However, in the above case, since a step of forming the panel main body and the decorative member and a step of attaching the decorative member to the panel main body are required, the number of man-hours increases and the manufacturing cost increases. In particular, when an extra-fine decorative member is provided, if the panel body and the decorative member are formed as separate parts as described above, the work of forming the decorative member itself and accurately attaching the decorative member to the panel body is extremely difficult. The manufacturing cost is even higher because of the difficulty.

上記のような問題は、インストルメントパネルに限らず、樹脂パネル部品の意匠面に加飾線を設ける場合に同様に生じ得る。 The above-mentioned problems are not limited to the instrument panel, and may occur similarly when the decorative line is provided on the design surface of the resin panel component.

そこで、本発明は、加飾線を有する樹脂パネルの製造を容易化して、製造コストを低減することを目的とする。 Therefore, an object of the present invention is to facilitate the production of a resin panel having a decorative wire and reduce the production cost.

前記課題を解決するために、本発明は、意匠面を有するパネル本体と、前記意匠面に沿って連続的に延びる加飾線を有する加飾部材とを備え、前記パネル本体を一次成形体、前記加飾部材を二次成形体とした多色成形品からなる樹脂パネル部品を提供する。 In order to solve the above problems, the present invention includes a panel main body having a design surface and a decorative member having a decorative line extending continuously along the design surface, and the panel main body is a primary molded body. Provided is a resin panel component made of a multicolor molded product in which the decorative member is a secondary molded body.

また、前記課題を解決するために、本発明は、意匠面を有するパネル本体と、前記意匠面に沿って連続的に延びる加飾線を有する加飾部材とを備えた樹脂パネル部品の製造方法であって、一方の金型と他方の金型とを型締めして第１キャビティを形成し、前記第１キャビティに樹脂を射出することにより前記パネル本体を成形する工程と、前記一方の金型に設けられたスライド型を前記他方の金型から離反させることにより第２キャビティを形成し、前記第２キャビティに、前記パネル本体の樹脂とは異なる樹脂を射出することにより、前記加飾部材を成形する工程とを有する樹脂パネル部品の製造方法を提供する。 Further, in order to solve the above problems, the present invention provides a method for manufacturing a resin panel component including a panel main body having a design surface and a decorative member having a decorative line extending continuously along the design surface. The step of molding the panel body by molding one mold and the other mold to form a first cavity and injecting resin into the first cavity, and the one mold. A second cavity is formed by separating the slide mold provided on the mold from the other mold, and a resin different from the resin of the panel body is injected into the second cavity to form the decorative member. Provided is a method for manufacturing a resin panel part having a step of molding.

上記のように、パネル本体と加飾部材とを多色成形で一体に形成することで、これらを別個に形成する作業や、加飾部材をパネル本体に取り付ける作業が不要となる。これにより、加飾線を有する樹脂パネル部品の製造工数が削減され、製造コストの低減が図られる。 As described above, by integrally forming the panel main body and the decorative member by multicolor molding, the work of forming them separately and the work of attaching the decorative member to the panel main body become unnecessary. As a result, the man-hours for manufacturing the resin panel part having the decorative wire can be reduced, and the manufacturing cost can be reduced.

上記のようにパネル本体と加飾部材とを多色成形する際、加飾部材を一次成形体として先に形成すると、後から射出されたパネル本体の樹脂が加飾部材に接触することで、加飾部材に変形や溶融が生じるおそれがある。特に、加飾部材が極細である場合、このような不具合が生じるおそれが高い。そこで、本発明では、上記のようにパネル本体を一次成形体とし、加飾部材を二次成形体とすることで、加飾部材が極細の場合でも、パネル本体を成形するために射出された樹脂による加飾部材の変形や溶融を回避できる。 When the panel body and the decorative member are multicolored as described above, if the decorative member is first formed as a primary molded body, the resin of the panel body ejected later comes into contact with the decorative member. The decorative member may be deformed or melted. In particular, when the decorative member is extremely fine, there is a high possibility that such a problem will occur. Therefore, in the present invention, by using the panel main body as the primary molded body and the decorative member as the secondary molded body as described above, injection is performed to mold the panel main body even when the decorative member is extremely fine. It is possible to avoid deformation and melting of the decorative member due to the resin.

上記の樹脂パネル部品において、加飾部材は、パネル本体の裏面に固定された固定部と、加飾線を有する本体部とを備えることが好ましい。このように、加飾部材に設けた固定部をパネル本体の裏面に固定することで、加飾線の形状に関わらず（例えば加飾線が極細であっても）、パネル本体と加飾部材との固定面積を確保できるため、両者を強固に固定することができる。 In the above resin panel parts, it is preferable that the decorative member includes a fixed portion fixed to the back surface of the panel main body and a main body portion having a decorative line. By fixing the fixing portion provided on the decorative member to the back surface of the panel body in this way, regardless of the shape of the decorative line (for example, even if the decorative line is extremely fine), the panel body and the decorative member Since a fixed area with and can be secured, both can be firmly fixed.

上記の樹脂パネル部品において、加飾部材の本体部の、樹脂パネル部品の厚さ方向（意匠面と直交する方向。以下、「パネル厚さ方向」と言う。）の肉厚が大きい場合、本体部のパネル厚さ方向の成形収縮量及びそのバラつきが大きくなる。加飾線の延在方向で、本体部の成形収縮量のバラつきが大きくなると、加飾線が長手方向で波打って見た目が悪くなってしまう。そこで、本体部の裏面に、加飾線の延在方向に延びる溝を形成すれば、加飾部材の本体部のパネル厚さ方向の肉厚が低減され、本体部の成形収縮が抑えられるため、加飾線の見た目の悪化を防止できる。 In the above resin panel parts, when the wall thickness of the main body of the decorative member in the thickness direction of the resin panel parts (direction orthogonal to the design surface; hereinafter referred to as "panel thickness direction") is large, the main body The amount of molding shrinkage in the panel thickness direction of the portion and its variation become large. If the amount of molding shrinkage of the main body increases in the extending direction of the decorative wire, the decorative wire undulates in the longitudinal direction and looks bad. Therefore, if a groove extending in the extending direction of the decorative line is formed on the back surface of the main body, the wall thickness of the main body of the decorative member in the panel thickness direction is reduced, and the molding shrinkage of the main body is suppressed. , It is possible to prevent the appearance of the decorative line from deteriorating.

上記の樹脂パネル部品は、例えば、パネル本体が、加飾線の延在方向に延びるスリットを有し、加飾部材が、パネル本体のスリットを裏面側から覆う略平板状をなした構成とすることができる。この場合、加飾部材のうち、パネル本体のスリットから意匠面側に露出した部分が加飾線となる。このように、加飾部材を略平板状とすることで、加飾部材を成形する第２キャビティの形状も略平板状の単純な形状となるため、第２キャビティに樹脂が確実に充填されやすくなり、加飾部材の成形精度が向上する。 The resin panel component described above has, for example, a structure in which the panel main body has a slit extending in the extending direction of the decorative line, and the decorative member has a substantially flat plate shape that covers the slit of the panel main body from the back surface side. be able to. In this case, of the decorative members, the portion exposed from the slit of the panel body to the design surface side becomes the decorative line. By forming the decorative member into a substantially flat plate shape in this way, the shape of the second cavity for molding the decorative member also becomes a simple shape having a substantially flat plate shape, so that the resin can be reliably filled in the second cavity. As a result, the molding accuracy of the decorative member is improved.

以上のように、加飾線を有する樹脂パネル部品を多色成形で形成することにより、樹脂パネル部品の製造が容易化されるため、製造コストを低減することができる。 As described above, by forming the resin panel parts having the decorative lines by multicolor molding, the production of the resin panel parts is facilitated, so that the manufacturing cost can be reduced.

樹脂パネル部品（インストルメントパネル）の斜視図である。It is a perspective view of a resin panel component (instrument panel). （Ａ）は、図１のＸ−Ｘ断面図であり、（Ｂ）はＡ図のＹ−Ｙ断面図である。(A) is a cross-sectional view taken along the line XX of FIG. 1, and (B) is a cross-sectional view taken along the line YY of FIG. （Ａ）及び（Ｂ）は、樹脂パネル部品のパネル本体及び加飾部材を二色成形で形成する手順を示す断面図である。(A) and (B) are cross-sectional views showing a procedure for forming a panel body and a decorative member of a resin panel component by two-color molding. （Ａ）〜（Ｃ）は、他の実施形態に係る樹脂パネル部品のパネル本体及び加飾部材を二色成形で形成する手順を示す断面図である。(A) to (C) are cross-sectional views showing a procedure for forming a panel body and a decorative member of a resin panel component according to another embodiment by two-color molding. さらに他の実施形態に係る樹脂パネル部品の断面図である。It is sectional drawing of the resin panel part which concerns on still another Embodiment. （Ａ）及び（Ｂ）は、図５に示す樹脂パネル部品のパネル本体及び加飾部材を二色成形で形成する手順を示す断面図である。(A) and (B) are cross-sectional views showing a procedure for forming a panel body and a decorative member of the resin panel component shown in FIG. 5 by two-color molding.

以下、本発明の実施形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１に、本実施形態に係る樹脂パネル部品としての自動車のインストルメントパネル１を示す。インストルメントパネル１は、意匠面１０ａを有するパネル本体１０と、意匠面１０ａに沿って連続的に延びる加飾線２０ａを有する加飾部材２０とを一体に備える。図示例では、加飾線２０ａが車幅方向に沿って略直線状に延びている。パネル本体１０と加飾部材２０とは異なる樹脂で形成される。尚、「異なる樹脂」とは、色、光沢、質感等の見た目が異なる樹脂であり、ベース樹脂が異なるものの他、ベース樹脂が同じであっても、添加する材料の種類や配合比を異ならせることで色等を異ならせたものを含む。 FIG. 1 shows an automobile instrument panel 1 as a resin panel component according to the present embodiment. The instrument panel 1 integrally includes a panel body 10 having a design surface 10a and a decoration member 20 having a decoration line 20a continuously extending along the design surface 10a. In the illustrated example, the decorative line 20a extends substantially linearly along the vehicle width direction. The panel body 10 and the decorative member 20 are made of different resins. The "different resins" are resins having different appearances such as color, luster, and texture, and in addition to those having different base resins, even if the base resins are the same, the types and compounding ratios of the materials to be added are different. Including those with different colors.

パネル本体１０は、計器やオーディオ等を取り付ける貫通孔や凹部等を有する正面部１２と、貫通孔を有さない平滑な上面部１３とを備える。図示例では、正面部１２の上端付近に、車幅方向に延びる加飾線２０ａを備えた加飾部材２０が設けられる。加飾線２０ａを設ける場所これに限らず、例えば上面部１３や、正面部１２と上面部１３との境界に設けてもよい。 The panel body 10 includes a front portion 12 having through holes, recesses, and the like for attaching an instrument, audio, and the like, and a smooth upper surface portion 13 having no through holes. In the illustrated example, a decoration member 20 having a decoration line 20a extending in the vehicle width direction is provided near the upper end of the front portion 12. Place where the decorative line 20a is provided Not limited to this, for example, it may be provided at the upper surface portion 13 or at the boundary between the front surface portion 12 and the upper surface portion 13.

以下、図２を用いて加飾部材２０の構成を説明するが、加飾部材２０の説明にあたっては、便宜上、加飾線２０ａの延在方向｛図２（Ｂ）の左右方向｝を「長手方向」、パネル本体１０の意匠面１０ａと直交する方向（図２の上下方向）を「パネル厚さ方向」、長手方向及びパネル厚さ方向の双方と直交する方向｛図２（Ａ）の左右方向｝を「幅方向」と言う。また、パネル厚さ方向で車内空間側（意匠面１０ａ側）を「表側」、その反対側を「裏側」と言う。 Hereinafter, the configuration of the decorative member 20 will be described with reference to FIG. 2. However, in the description of the decorative member 20, the extending direction of the decorative line 20a {the left-right direction of FIG. 2 (B)} is set to "longitudinal direction" for convenience. "Direction", the direction orthogonal to the design surface 10a of the panel body 10 (vertical direction in FIG. 2) is the "panel thickness direction", and the direction orthogonal to both the longitudinal direction and the panel thickness direction {left and right in FIG. 2 (A). Direction} is called "width direction". Further, in the panel thickness direction, the vehicle interior space side (design surface 10a side) is referred to as "front side", and the opposite side is referred to as "back side".

図２（Ａ）に示すように、加飾部材２０は、パネル本体１０の裏面１０ｂに固定された固定部２１と、加飾線２０ａが設けられた本体部２２とを有する。図示例では、本体部２２の幅方向両側に固定部２１が設けられる。具体的には、本体部２２が、表側に凸を成した曲面状を成し、本体部２２のパネル厚さ方向裏側の端部から幅方向外側に向けて、平板状の固定部２１が延びている。このように、加飾部材２０に設けた固定部２１をパネル本体１０に固着することで、加飾線２０ａの形状や大きさ等に関わらず、加飾部材２０とパネル本体１０との固定面積を確保することができるため、両者を強固に固定することができる。 As shown in FIG. 2A, the decorative member 20 has a fixing portion 21 fixed to the back surface 10b of the panel main body 10 and a main body portion 22 provided with a decorative line 20a. In the illustrated example, fixing portions 21 are provided on both sides of the main body portion 22 in the width direction. Specifically, the main body portion 22 has a curved surface shape that is convex on the front side, and the flat plate-shaped fixing portion 21 extends outward in the width direction from the end portion on the back side in the panel thickness direction of the main body portion 22. ing. By fixing the fixing portion 21 provided on the decorative member 20 to the panel body 10 in this way, the fixed area between the decorative member 20 and the panel body 10 is fixed regardless of the shape and size of the decorative line 20a. Can be secured, so that both can be firmly fixed.

本実施形態では、パネル本体１０に、長手方向に延びるスリット１１が設けられ、このスリット１１の内周に本体部２２が入り込んでいる。パネル本体１０のスリット１１の内面と加飾部材２０の本体部２２の幅方向両側の側面とは密着しており、図示例では、これらの面が、パネル厚さ方向で表側に行くにつれて加飾線２０ａの幅方向中央側（互いに接近する側）に傾斜している。加飾部材２０の本体部２２の表側の面のうち、スリット１１から露出した領域が加飾線２０ａとなる。図示例の加飾線２０ａは、表側に凸を成した曲面で構成され、その幅方向両側に意匠面１０ａが隙間なく隣接している。本実施形態では、図２（Ｂ）に示すように、加飾線２０ａが、長手方向（車幅方向）に沿って略直線状に連続して延びる。加飾線２０ａの頂部（表側の端部）は、長手方向全域で、幅方向両側に隣接する意匠面１０ａよりも表側に突出している。 In the present embodiment, the panel main body 10 is provided with a slit 11 extending in the longitudinal direction, and the main body portion 22 is inserted into the inner circumference of the slit 11. The inner surface of the slit 11 of the panel main body 10 and the side surfaces of the main body portion 22 of the decorative member 20 on both sides in the width direction are in close contact with each other. The line 20a is inclined toward the center side in the width direction (the side approaching each other). Of the front surface of the main body 22 of the decorative member 20, the region exposed from the slit 11 is the decorative line 20a. The decorative line 20a in the illustrated example is formed of a curved surface having a convex shape on the front side, and the design surfaces 10a are adjacent to each other on both sides in the width direction without a gap. In the present embodiment, as shown in FIG. 2B, the decorative line 20a extends continuously in a substantially straight line along the longitudinal direction (vehicle width direction). The top portion (front end) of the decorative line 20a projects to the front side from the design surface 10a adjacent to both sides in the width direction over the entire length direction.

加飾部材２０の表側の面と裏側の面とは同一形状を成している。具体的に、本体部２２の表側の面と裏側の面は、同一形状の曲面で構成される。その結果、本体部２２の裏側の面に、長手方向に延びる溝２３が設けられる。固定部２１の表側の面と裏側の面は、パネル厚さ方向と直交する平坦面で構成される。 The front surface and the back surface of the decorative member 20 have the same shape. Specifically, the front surface and the back surface of the main body 22 are formed of curved surfaces having the same shape. As a result, a groove 23 extending in the longitudinal direction is provided on the back surface of the main body 22. The front side surface and the back side surface of the fixing portion 21 are composed of flat surfaces orthogonal to the panel thickness direction.

上記のインストルメントパネル１は、パネル本体１０を一次成形体、加飾部材２０を二次成形体とする多色成形（二色成形）により形成される。以下、上記のインストルメントパネル１の製造方法を説明する。 The instrument panel 1 is formed by multicolor molding (two-color molding) in which the panel body 10 is a primary molded body and the decorative member 20 is a secondary molded body. Hereinafter, a method for manufacturing the above instrument panel 1 will be described.

インストルメントパネル１は、図３に示す金型を用いて形成される。この金型は、可動型３０と、固定型４０とを備える。可動型３０は、可動型本体３１と、スライド型３２とを備える。スライド型３２は、可動型本体３１に対してスライド可能であり、図示例では、パネル厚さ方向（図中上下方向）にスライド可能とされる。 The instrument panel 1 is formed by using the mold shown in FIG. This mold includes a movable mold 30 and a fixed mold 40. The movable type 30 includes a movable type main body 31 and a slide type 32. The slide type 32 is slidable with respect to the movable main body 31, and in the illustrated example, the slide type 32 is slidable in the panel thickness direction (vertical direction in the drawing).

固定型４０には、長手方向に延びる凹曲面状の第１成形面４０ａと、第１成形面４０ａの全周を囲み、パネル本体１０の意匠面１０ａを成形する第２成形面４０ｂとが設けられる。可動型３０の可動型本体３１は、スライド型３２の全周を囲み、パネル本体１０の裏面１０ｂを成形する成形面３１ａを有する。スライド型３２には、長手方向に延びる凸曲面状の第１成形面３２ａと、第１成形面３２ａの幅方向両側に設けられ、パネル本体１０のスリット１１の内面を成形する第２成形面３２ｂと、第２成形面３２ｂの幅方向外側に設けられ、パネル本体１０の裏面１０ｂを成形する第３成形面３２ｃとが設けられる。図示例では、スライド型３２の一対の第２成形面３２ｂが、パネル厚さ方向表側（図中上方）に行くにつれて幅方向内側に傾斜し、第１成形面３２ａと滑らかに連続している。 The fixed mold 40 is provided with a concave curved first forming surface 40a extending in the longitudinal direction and a second forming surface 40b that surrounds the entire circumference of the first forming surface 40a and forms the design surface 10a of the panel body 10. Be done. The movable main body 31 of the movable mold 30 has a molding surface 31a that surrounds the entire circumference of the slide mold 32 and forms the back surface 10b of the panel main body 10. The slide mold 32 is provided with a convex curved first forming surface 32a extending in the longitudinal direction and both sides of the first forming surface 32a in the width direction to form the inner surface of the slit 11 of the panel body 10. And a third molding surface 32c, which is provided on the outer side of the second molding surface 32b in the width direction and forms the back surface 10b of the panel body 10. In the illustrated example, the pair of second forming surfaces 32b of the slide type 32 are inclined inward in the width direction toward the front side (upper side in the drawing) in the panel thickness direction, and are smoothly continuous with the first forming surface 32a.

まず、図３（Ａ）に示すように、可動型３０と固定型４０とを型締めする。具体的には、可動型本体３１を固定型４０に当接させると共に、スライド型３２の第１成形面３２ａを固定型４０の第１成形面４０ａに嵌合させる。これにより、固定型４０の第２成形面４０ｂと、可動型本体３１の成形面３１ａと、スライド型３２の第２成形面３２ｂ及び第３成形面３２ｃとで、第１キャビティ５１が形成される。この第１キャビティ５１に樹脂を射出することにより、パネル本体１０が成形される。 First, as shown in FIG. 3A, the movable mold 30 and the fixed mold 40 are molded. Specifically, the movable main body 31 is brought into contact with the fixed mold 40, and the first molding surface 32a of the slide mold 32 is fitted to the first molding surface 40a of the fixed mold 40. As a result, the first cavity 51 is formed by the second molding surface 40b of the fixed mold 40, the molding surface 31a of the movable main body 31, and the second molding surface 32b and the third molding surface 32c of the slide mold 32. .. The panel body 10 is molded by injecting resin into the first cavity 51.

パネル本体１０の樹脂が固化したら、可動型本体３１と固定型４０とを当接させた状態で、図３（Ｂ）に示すように、スライド型３２を固定型４０から離反する側（図中下方）に後退させる。これにより、固定型４０の第１成形面４０ａと、パネル本体１０のスリット１１の内面及び裏面１０ｂと、スライド型３２の第１〜第３成形面３２ａ〜３２ｃとで第２キャビティ５２が形成される。この第２キャビティ５２に、パネル本体１０の樹脂とは異なる樹脂を射出することにより、加飾部材２０が成形されると共に、加飾部材２０とパネル本体１０とが一体化される。 After the resin of the panel body 10 has solidified, the slide mold 32 is separated from the fixed mold 40 as shown in FIG. 3B in a state where the movable main body 31 and the fixed mold 40 are in contact with each other (in the figure). Retreat to (down). As a result, the second cavity 52 is formed by the first molding surface 40a of the fixed mold 40, the inner and back surfaces 10b of the slit 11 of the panel body 10, and the first to third molding surfaces 32a to 32c of the slide mold 32. NS. By injecting a resin different from the resin of the panel main body 10 into the second cavity 52, the decorative member 20 is molded, and the decorative member 20 and the panel main body 10 are integrated.

このように、加飾線２０ａを有する樹脂パネル部品（インストルメントパネル１）を二色成形で形成することにより、加飾部材２０とパネル本体１０とを別個に形成する工程や、加飾部材２０をパネル本体１０に取り付ける工程が不要となるため、製造が容易化される。また、加飾線２０ａの幅は、金型の形状（具体的には、固定型４０の第１成形面４０ａの幅方向寸法）を変更することで、自由に設定することができる。従って、従来のように加飾部材を別部品で設ける場合には困難であった極細（例えば７ｍｍ以下、特に５ｍｍ以下）の加飾線２０ａでも、容易に形成することができる。尚、製造の都合上、加飾線２０ａの幅は、平面に設ける場合は１ｍｍ以上、曲面に設ける場合は２ｍｍ以上であることが好ましい。 In this way, the process of separately forming the decorative member 20 and the panel body 10 by forming the resin panel component (instrument panel 1) having the decorative wire 20a by two-color molding, and the decorative member 20 Is not required to be attached to the panel body 10, so that the production is facilitated. Further, the width of the decorative line 20a can be freely set by changing the shape of the mold (specifically, the width direction dimension of the first molding surface 40a of the fixed mold 40). Therefore, even an extra-fine (for example, 7 mm or less, particularly 5 mm or less) decorative wire 20a, which was difficult when the decorative member is provided as a separate part as in the conventional case, can be easily formed. For convenience of manufacture, the width of the decorative line 20a is preferably 1 mm or more when it is provided on a flat surface and 2 mm or more when it is provided on a curved surface.

また、上記のように、パネル本体１０を一次成形体として先に成形した後、加飾部材２０を二次成形体としてパネル本体１０と一体に成形することで、パネル本体１０を成形するための溶融樹脂により、体積の小さい加飾部材２０が変形、溶融する事態を回避できるため、加飾部材２０に設けられた加飾線２０ａの寸法精度が高められる。 Further, as described above, after the panel body 10 is first molded as the primary molded body, the decorative member 20 is integrally molded with the panel body 10 as the secondary molded body to form the panel body 10. Since the molten resin can prevent the decorative member 20 having a small volume from being deformed and melted, the dimensional accuracy of the decorative wire 20a provided on the decorative member 20 is improved.

また、本実施形態では、加飾部材２０の本体部２２の裏側の面に、長手方向に延びる溝２３が設けられているため、その分、本体部２２のパネル厚さ方向の肉厚が低減されている。これにより、加飾部材２０の本体部２２の成形収縮が抑えられるため、本体部２２の寸法精度が高められ、加飾線２０ａが長手方向で波打つ事態を防止して美観を向上させることができる。 Further, in the present embodiment, since the groove 23 extending in the longitudinal direction is provided on the back surface of the main body portion 22 of the decorative member 20, the wall thickness of the main body portion 22 in the panel thickness direction is reduced by that amount. Has been done. As a result, the molding shrinkage of the main body portion 22 of the decorative member 20 is suppressed, so that the dimensional accuracy of the main body portion 22 is improved, the situation where the decorative line 20a undulates in the longitudinal direction can be prevented, and the aesthetic appearance can be improved. ..

本発明は上記の実施形態に限られない。以下、本発明の他の実施形態を説明するが、上記の実施形態と同様の点については、説明を省略する。 The present invention is not limited to the above embodiments. Hereinafter, other embodiments of the present invention will be described, but the same points as those of the above-described embodiments will be omitted.

図４に示す実施形態は、主にスライド型３２の第２成形面３２ｂの形状が、上記の実施形態と異なる。具体的には、スライド型３２の第２成形面３２ｂ、及びこの面で成形されるパネル本体１０のスリット１１の内面が、スライド型３２のスライド方向（パネル厚さ方向）と平行になっている。 In the embodiment shown in FIG. 4, the shape of the second molding surface 32b of the slide type 32 is different from that of the above embodiment. Specifically, the second molding surface 32b of the slide mold 32 and the inner surface of the slit 11 of the panel body 10 molded on this surface are parallel to the slide direction (panel thickness direction) of the slide mold 32. ..

この実施形態では、まず、図４（Ａ）に示すように、可動型３０と固定型４０を型締めし、スライド型３２の第１成形面３２ａを固定型４０の第１成形面４０ａに嵌合させることで第１キャビティ５１を形成し、この第１キャビティ５１に樹脂を射出してパネル本体１０を成形する。そして、パネル本体１０の樹脂が固化したら、図４（Ｂ）に示すように、スライド型３２を固定型４０から離反する側（図中下方）にスライドさせる。このとき、スライド型３２の第２成形面３２ｂとパネル本体１０のスリット１１の内面とがスライド方向と平行であるため、これらが摺動する。このスライド型３２とパネル本体１０との摺動部Ｐにより、加飾部材２０の固定部２１を成形する空間５２ａと、加飾部材２０の本体部２２を成形する空間５２ｂとが分断されるため、第２キャビティが形成されない。その後、スライド型３２をさらにスライドさせることで、図４（Ｃ）に示すように、スライド型３２の第２成形面３２ｂがパネル本体１０のスリット１１の内面から離反し、加飾部材２０の固定部２１を成形する空間５２ａと本体部２２を成形する空間５２ｂとが連通して第２キャビティ５２が形成される。この第２キャビティ５２に樹脂を射出することで、加飾部材２０が成形される。 In this embodiment, first, as shown in FIG. 4A, the movable mold 30 and the fixed mold 40 are molded, and the first molding surface 32a of the slide mold 32 is fitted into the first molding surface 40a of the fixed mold 40. The first cavity 51 is formed by the combination, and the resin is injected into the first cavity 51 to form the panel body 10. Then, when the resin of the panel body 10 is solidified, as shown in FIG. 4 (B), the slide mold 32 is slid to the side (lower in the figure) away from the fixed mold 40. At this time, since the second molding surface 32b of the slide mold 32 and the inner surface of the slit 11 of the panel body 10 are parallel to the slide direction, they slide. The sliding portion P between the slide mold 32 and the panel main body 10 divides the space 52a for molding the fixing portion 21 of the decorative member 20 and the space 52b for molding the main body portion 22 of the decorative member 20. , The second cavity is not formed. After that, by further sliding the slide mold 32, as shown in FIG. 4C, the second molding surface 32b of the slide mold 32 is separated from the inner surface of the slit 11 of the panel body 10, and the decorative member 20 is fixed. The space 52a for molding the portion 21 and the space 52b for molding the main body 22 communicate with each other to form the second cavity 52. By injecting resin into the second cavity 52, the decorative member 20 is molded.

このように、図４に示す実施形態では、第２キャビティ５２を形成するために、スライド型３２を大きくスライドさせる必要があるため、加飾部材２０のパネル厚さ方向の肉厚が大きくなり、成形収縮量が大きくなる。特に、加飾部材２０の本体部２２のパネル厚さ方向の肉厚Ｔ２｛図４（Ｃ）参照｝が大きくなって成形収縮量が大きくなることにより、加飾線２０ａの寸法精度が悪くなり、見た目が悪化するおそれがある。 As described above, in the embodiment shown in FIG. 4, since it is necessary to slide the slide mold 32 greatly in order to form the second cavity 52, the wall thickness of the decorative member 20 in the panel thickness direction becomes large. The amount of molding shrinkage increases. In particular, the dimensional accuracy of the decorative line 20a deteriorates due to the increase in the wall thickness T2 {see FIG. 4 (C)} of the main body 22 of the decorative member 20 in the panel thickness direction and the increase in the amount of molding shrinkage. , The appearance may deteriorate.

これに対し、図３に示す実施形態では、スライド型３２の第２成形面３２ｂ及びこの面で成形されるパネル本体１０の端面（スリット１１の内面）が、スライド型３２のスライド方向（パネル厚さ方向）に対して傾斜しているため、スライド型３２を少しスライドさせるだけでこれらの面が離反し、加飾部材２０の本体部２２を成形する空間と、加飾部材２０の固定部２１を成形する空間とが連通して第２キャビティ５２が形成される。この場合、図４に示す実施形態と比べて、スライド型３２のスライド量が小さくて済むため、加飾部材２０のパネル厚さ方向の肉厚、特に本体部２２のパネル厚さ方向の肉厚Ｔ１｛図３（Ｂ）参照｝が抑えられ、本体部２２の成形収縮量を抑えて加飾線２０ａの寸法精度を高めることができる。 On the other hand, in the embodiment shown in FIG. 3, the second molding surface 32b of the slide mold 32 and the end surface (inner surface of the slit 11) of the panel body 10 molded on this surface are in the slide direction (panel thickness) of the slide mold 32. Since it is inclined with respect to the vertical direction), these surfaces are separated from each other just by sliding the slide mold 32 a little, and the space for forming the main body 22 of the decorative member 20 and the fixing portion 21 of the decorative member 20 are formed. The second cavity 52 is formed by communicating with the space for forming the second cavity 52. In this case, since the slide amount of the slide type 32 can be smaller than that of the embodiment shown in FIG. 4, the wall thickness of the decorative member 20 in the panel thickness direction, particularly the wall thickness of the main body 22 in the panel thickness direction. T1 {see FIG. 3B} can be suppressed, the amount of molding shrinkage of the main body 22 can be suppressed, and the dimensional accuracy of the decorative line 20a can be improved.

図５に示す実施形態では、加飾部材２０が略平板状を成している点で、上記の実施形態と異なる。加飾部材２０のうち、パネル本体１０の裏面１０ｂに固定された部分が固定部２１となり、パネル本体１０のスリット１１を裏側から覆う領域が本体部２２となる。図示例では、本体部２２の幅方向両側に固定部２１が設けられ、本体部２２の表側の面がスリット１１から露出して加飾線２０ａを構成する。 The embodiment shown in FIG. 5 is different from the above embodiment in that the decorative member 20 has a substantially flat plate shape. Of the decorative member 20, the portion fixed to the back surface 10b of the panel main body 10 is the fixing portion 21, and the region covering the slit 11 of the panel main body 10 from the back side is the main body portion 22. In the illustrated example, fixing portions 21 are provided on both sides of the main body portion 22 in the width direction, and the front surface of the main body portion 22 is exposed from the slit 11 to form the decorative line 20a.

このインストルメントパネル１は、図６に示す金型を用いて成形される。固定型４０は、加飾線２０ａを成形する平坦な第１成形面４０ａと、パネル本体１０の意匠面１０ａを成形する第２成形面４０ｂと、パネル本体１０のスリット１１の内面を成形する第３成形面４０ｃとを有する。可動型本体３１及びスライド型３２は、それぞれ平坦な成形面３１ａ、３２ｄを有する。尚、固定型４０の第１成形面４０ａ及びこれとパネル厚さ方向で対向するスライド型３２の成形面３２ｄに、互いに嵌合する凹凸を設けてもよい。 The instrument panel 1 is molded using the mold shown in FIG. The fixed mold 40 has a flat first forming surface 40a for forming the decorative wire 20a, a second forming surface 40b for forming the design surface 10a of the panel body 10, and a second forming surface for forming the inner surface of the slit 11 of the panel body 10. It has 3 molding surfaces 40c. The movable main body 31 and the slide mold 32 have flat molding surfaces 31a and 32d, respectively. The first molding surface 40a of the fixed mold 40 and the molding surface 32d of the slide mold 32 facing the first molding surface 40a in the panel thickness direction may be provided with irregularities that fit each other.

まず、図６（Ａ）に示すように、可動型３０と固定型４０とを型締めした状態で、固定型４０の第１成形面４０ａをスライド型３２の成形面３２ｄに当接させる。これにより、固定型４０の第２成形面４０ｂ及び第３成形面４０ｃと、可動型本体３１の成形面３１ａと、スライド型３２の成形面３２ａとで第１キャビティ５１を形成する。この第１キャビティ５１に樹脂を射出することでパネル本体１０を成形する。 First, as shown in FIG. 6A, the first molding surface 40a of the fixed mold 40 is brought into contact with the molding surface 32d of the slide mold 32 in a state where the movable mold 30 and the fixed mold 40 are molded. As a result, the first cavity 51 is formed by the second molding surface 40b and the third molding surface 40c of the fixed mold 40, the molding surface 31a of the movable mold main body 31, and the molding surface 32a of the slide mold 32. The panel body 10 is molded by injecting resin into the first cavity 51.

次に、図６（Ｂ）に示すように、スライド型３２をスライドさせて固定型４０から離反させる。これにより、固定型４０の第１成形面４０ａと、パネル本体１０の裏面１０ｂと、スライド型３２の成形面３２ｄとで、第２キャビティ５２が形成される。この第２キャビティ５２に樹脂を射出することで、略平板状の加飾部材２０を成形する。 Next, as shown in FIG. 6B, the slide mold 32 is slid to separate from the fixed mold 40. As a result, the second cavity 52 is formed by the first molding surface 40a of the fixed mold 40, the back surface 10b of the panel body 10, and the molding surface 32d of the slide mold 32. By injecting resin into the second cavity 52, a substantially flat plate-shaped decorative member 20 is formed.

本実施形態のように、加飾部材２０、すなわち第２キャビティ５２が略平板状であることで、第２キャビティ５２に樹脂が充填されやすくなるため、加飾部材２０の成形性、ひいては加飾線２０ａの寸法精度が高められる。特に、加飾線２０ａの幅が極細である場合、本実施形態のように加飾部材２０の形状を単純化することで、加飾線２０ａを精度よく成形することができる。 Since the decorative member 20, that is, the second cavity 52 has a substantially flat plate shape as in the present embodiment, the resin can be easily filled in the second cavity 52, so that the moldability of the decorative member 20 and the decoration can be achieved. The dimensional accuracy of the wire 20a is improved. In particular, when the width of the decorative wire 20a is extremely narrow, the decorative wire 20a can be accurately formed by simplifying the shape of the decorative member 20 as in the present embodiment.

また、上記の実施形態では、加飾線２０ａの全周が意匠面１０ａで囲まれているが、加飾線２０ａをパネル本体１０の端部に設けてもよく、例えば、パネル本体１０のうち、オーディオ等を取り付けるための貫通孔の縁に沿って加飾線２０ａを設けてもよい。 Further, in the above embodiment, the entire circumference of the decorative line 20a is surrounded by the design surface 10a, but the decorative line 20a may be provided at the end of the panel main body 10, for example, of the panel main body 10. , The decorative line 20a may be provided along the edge of the through hole for attaching audio or the like.

また、本発明は、インストルメントパネルに限らず、意匠面に加飾線が設けられた樹脂パネル部品であれば用途や形状を問わずに適用可能である。 Further, the present invention is not limited to the instrument panel, and can be applied to any resin panel component having a decorative line on the design surface regardless of the application or shape.

１ インストルメントパネル（樹脂パネル部品）
１０ パネル本体
１０ａ 意匠面
１１ スリット
２０ 加飾部材
２０ａ 加飾線
２１ 固定部
２２ 本体部
２３ 溝
３０ 可動型
３２ スライド型
４０ 固定型 1 Instrument panel (resin panel parts)
10 Panel body 10a Design surface 11 Slit 20 Decorative member 20a Decorative line 21 Fixed part 22 Main body 23 Groove 30 Movable type 32 Slide type 40 Fixed type

Claims (3)

意匠面及びスリットを有するパネル本体と、
前記意匠面に沿って連続的に延びる加飾線を有し、前記パネル本体のスリットの内周に入り込んだ加飾部材とを備え、
前記パネル本体を一次成形体、前記加飾部材を二次成形体とした多色成形品からなり、
前記パネル本体のスリットの内面及びこの面に密着した前記加飾部材の幅方向両側の側面が、パネル厚さ方向表側に行くにつれて前記スリットの幅方向中央側に傾斜した樹脂パネル部品。 Panel body with design surface and slits,
It has a decorative line that extends continuously along the design surface, and includes a decorative member that has entered the inner circumference of the slit of the panel body.
It is composed of a multicolor molded product in which the panel body is a primary molded body and the decorative member is a secondary molded body.
A resin panel component in which the inner surface of the slit of the panel body and the side surfaces of the decorative member in close contact with the surface on both sides in the width direction are inclined toward the center side in the width direction of the slit as it goes to the front side in the panel thickness direction. 前記加飾部材が、前記パネル本体の裏面に固定された固定部と、前記加飾線を有する本体部とを備えた請求項１に記載の樹脂パネル部品。 The resin panel component according to claim 1, wherein the decorative member includes a fixing portion fixed to the back surface of the panel main body and a main body portion having the decorative wire. 意匠面及びスリットを有するパネル本体と、
前記意匠面に沿って連続的に延びる加飾線を有し、前記パネル本体のスリットの内周に入り込んだ加飾部材とを備えた樹脂パネル部品の製造方法であって、
一方の金型と他方の金型とを型締めして第１キャビティを形成し、前記第１キャビティに樹脂を射出することにより前記パネル本体を成形する工程と、
前記一方の金型に設けられたスライド型を前記他方の金型から離反させることにより第２キャビティを形成し、前記第２キャビティに、前記パネル本体の樹脂とは異なる樹脂を射出することにより、前記加飾部材を成形する工程とを有し、
前記パネル本体のスリットの内面及びこの面を成形する前記スライド型の成形面が、パネル厚さ方向表側に行くにつれて前記スリットの幅方向中央側に傾斜した樹脂パネル部品の製造方法。 Panel body with design surface and slits,
A method for manufacturing a resin panel component, which has a decorative line extending continuously along the design surface and includes a decorative member that has entered the inner circumference of a slit of the panel body.
A step of molding the panel body by molding one mold and the other mold to form a first cavity and injecting resin into the first cavity.
A second cavity is formed by separating the slide mold provided on the one mold from the other mold, and a resin different from the resin of the panel body is injected into the second cavity. It has a step of molding the decorative member.
A method for manufacturing a resin panel component in which the inner surface of the slit of the panel body and the slide-type molding surface for molding the surface are inclined toward the center side in the width direction of the slit as the molding surface of the slide type is inclined toward the front side in the panel thickness direction.
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