JP2006137066A - Manufacturing method of metal-like decorative part, manufacturing method of resin molded product and mold for molding metal-like decorative part - Google Patents
Manufacturing method of metal-like decorative part, manufacturing method of resin molded product and mold for molding metal-like decorative part Download PDFInfo
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- JP2006137066A JP2006137066A JP2004327911A JP2004327911A JP2006137066A JP 2006137066 A JP2006137066 A JP 2006137066A JP 2004327911 A JP2004327911 A JP 2004327911A JP 2004327911 A JP2004327911 A JP 2004327911A JP 2006137066 A JP2006137066 A JP 2006137066A
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- 238000000465 moulding Methods 0.000 title claims abstract description 184
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 56
- 229920005989 resin Polymers 0.000 title claims abstract description 22
- 239000011347 resin Substances 0.000 title claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 82
- 229910052751 metal Inorganic materials 0.000 claims description 87
- 239000002184 metal Substances 0.000 claims description 87
- 230000000873 masking effect Effects 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229920005992 thermoplastic resin Polymers 0.000 claims description 14
- 238000007493 shaping process Methods 0.000 claims description 13
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 12
- 229920003051 synthetic elastomer Polymers 0.000 claims description 10
- 239000005061 synthetic rubber Substances 0.000 claims description 10
- 150000001336 alkenes Chemical class 0.000 claims description 9
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000005034 decoration Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 25
- 239000010410 layer Substances 0.000 description 49
- 239000001055 blue pigment Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000007650 screen-printing Methods 0.000 description 6
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 5
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 5
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 5
- 229920006352 transparent thermoplastic Polymers 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012994 photoredox catalyst Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polyacryl Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
本発明は、複数の熱可塑性樹脂層と金属層とを積層して備えた金属調成形シートを、加熱したシート成形型に密着させて3次元構造の金属調装飾部品に成形する金属調装飾部品の製造方法、及び、その金属調装飾部品を用いた樹脂成形品の製造方法、及び、それら製造方法に用いられる金属調装飾部品成形金型に関する。 The present invention relates to a metal-like decorative part that forms a metal-like decorative part having a three-dimensional structure by closely attaching a metal-like molded sheet provided with a plurality of thermoplastic resin layers and metal layers to a heated sheet molding die. The present invention relates to a manufacturing method of the above, a manufacturing method of a resin molded product using the metallic decorative component, and a metallic decorative component molding die used in the manufacturing method.
近年、樹脂成形品を金属調に装飾する場合には、メッキを施す代わりに金属調成形シートが用いられるようになってきている(例えば、特許文献1参照)。具体的には、図18に示した樹脂成形品1の上面を金属調に装飾するためには、図19に示すように、その樹脂成形品1の上面に対応した凹凸形状を有するシート成形型2を加熱し、その上に金属調成形シート3を敷設してから、図20に示すように、シート成形型2の上面を密閉型5で覆う。そして、シート成形型2に形成されたガス排出孔2Aを通して、金属調成形シート3とシート成形型2との間のガスを吸引しつつ、密閉型5に形成されたガスチャージ孔5Aを通して、密閉型5とシート成形型2との間のガス充填空間5Bに圧縮ガスを充填する。これにより金属調成形シート3がシート成形型2に密着し、金属調成形シート3から3次元構造の金属調装飾部品4が成形される。そして、金属調成形シート3から金属調装飾部品4を切り出し、その金属調装飾部品4を用いて樹脂成形品1をインサート形成する。これにより、図18に示すように樹脂成形品1の上面が金属調装飾部品4によって覆われ、金属調に装飾される。
しかしながら、上述した従来の金属調装飾部品の製造方法では、図19に示すように金属調成形シート3の一部がシート成形型2の凹凸形状の凸部の間に張られた状態で、前記したガスの吸引とチャージとを行って金属調成形シート3全体を略同時にシート成形型2に密着させるので、シート成形型2のうち凹凸の高低が急激に変化する部分において、金属調成形シート3が局所的に塑性変形し(深絞りされ)、肉厚が薄くなる。このため、図18に示すように金属調装飾部品4の一部に金属調の光沢が損なわれた光沢低下部4Aが発生する場合があった。 However, in the above-described conventional method for manufacturing a metallic tone decorative part, as shown in FIG. 19, in a state where a part of the metallic tone forming sheet 3 is stretched between the convex and concave portions of the sheet molding die 2, Since the entire metal-molded sheet 3 is brought into close contact with the sheet-molding mold 2 almost simultaneously with the suction and charging of the gas, the metal-molded sheet 3 is formed in the portion of the sheet-molding mold 2 where the level of the unevenness changes rapidly. Is locally plastically deformed (deep drawing), and the wall thickness is reduced. For this reason, as shown in FIG. 18, there is a case where a gloss reduction portion 4A in which the metallic luster is impaired is generated in a part of the metallic decorative component 4.
本発明は、上記事情に鑑みてなされたもので、金属調成形シートを金属調装飾部品に成形しても、金属調の光沢を良好に保持することが可能な金属調装飾部品の製造方法、樹脂成形品の製造方法、及び、金属調装飾部品成形金型の提供を目的とする。 The present invention was made in view of the above circumstances, and a method for producing a metallic decorative component capable of maintaining a good metallic gloss even when a metallic decorative sheet is molded into a metallic decorative component, The object is to provide a method for producing a resin molded product and a metal-like decorative part molding die.
上記目的を達成するためになされた請求項1の発明に係る金属調装飾部品(29)の製造方法は、複数の熱可塑性樹脂層(11,14)と金属層(13)とを積層して備えた金属調成形シート(10)を、加熱したシート成形型(72)に密着させて、3次元構造の金属調装飾部品(29)に成形する金属調装飾部品(29)の製造方法において、シート成形型(72)に金属調成形シート(10)を対向配置するシート配置工程と、成形補助型(71)により金属調成形シート(10)の一部をシート成形型(72)に向けて押圧し、金属調成形シート(10)をシート成形型(72)の凹凸形状に概ね倣って変形させるシート押圧工程と、金属調成形シート(10)をシート成形型(72)の凹凸形状に概ね倣って変形させた状態で、それら金属調成形シート(10)とシート成形型(72)との間のガスを吸引して金属調成形シート(10)をシート成形型(72)に密着させるシート密着工程とを行うところに特徴を有する。 In order to achieve the above object, a method for producing a metallic decorative part (29) according to the invention of claim 1 comprises laminating a plurality of thermoplastic resin layers (11, 14) and a metal layer (13). In the method for producing a metal-like decorative part (29) in which the provided metal-like molded sheet (10) is closely attached to a heated sheet-forming mold (72) to form a metal-like decorative part (29) having a three-dimensional structure. A sheet disposing step of disposing the metal-formed sheet (10) opposite to the sheet-forming mold (72), and a part of the metal-formed sheet (10) is directed to the sheet-forming mold (72) by the forming auxiliary mold (71). A sheet pressing step of pressing and deforming the metal-like formed sheet (10) substantially following the uneven shape of the sheet-forming mold (72); and the metal-formed sheet (10) substantially in the uneven shape of the sheet-forming mold (72). In a state of being copied and deformed, And a sheet adhering step for sucking a gas between the metal-formed sheet (10) and the sheet-forming mold (72) to bring the metal-formed sheet (10) into close contact with the sheet-forming mold (72). Have
請求項2の発明は、請求項1に記載の金属調装飾部品(29)の製造方法において、成形補助型(71)に複数の押圧部(80X,80Y)を設けておき、それら押圧部(80X,80Y)によって金属調成形シート(10)を押圧するタイミングを異ならせたところに特徴を有する。 A second aspect of the present invention is the method for manufacturing a metallic decorative part (29) according to the first aspect, wherein a plurality of pressing portions (80X, 80Y) are provided in the forming auxiliary mold (71), and the pressing portions ( 80X, 80Y) is characterized in that the timing of pressing the metal-formed sheet (10) is varied.
請求項3の発明は、請求項2に記載の金属調装飾部品(29)の製造方法において、複数の押圧部(80X,80Y)は、金属調成形シート(10)のうち金属調装飾部品(29)の中央部になる部分を先に押圧してから、その中央部になる部分の外側部分を押圧するところに特徴を有する。 According to a third aspect of the present invention, in the method for producing a metallic decorative component (29) according to the second aspect, the plurality of pressing portions (80X, 80Y) are made of a metallic decorative component (10) of the metallic molded sheet (10). 29) It is characterized in that after pressing the portion that becomes the central portion first, the outer portion of the portion that becomes the central portion is pressed.
請求項4の発明は、請求項2又は3に記載の金属調装飾部品(29)の製造方法において、成形補助型(71)のうち押圧部(80X,80Y)の横隣にガイド部(80A)を設けておき、シート押圧工程では、ガイド部(80A)を、シート成形型(72)に備えた凸部(73A)に対して、金属調成形シート(10)の厚さより大きなクリアランス(C)を介する位置に配置してから、押圧部(80X,80Y)にて金属調成形シート(10)を押圧するところに特徴を有する。 According to a fourth aspect of the present invention, there is provided the method for producing a metallic decorative component (29) according to the second or third aspect, wherein the guide portion (80A) is next to the pressing portion (80X, 80Y) of the auxiliary molding die (71). ), And in the sheet pressing step, the guide portion (80A) has a clearance (C greater than the thickness of the metallic tone forming sheet (10) with respect to the convex portion (73A) provided in the sheet forming die (72). ), And the metal shaped sheet (10) is pressed by the pressing portions (80X, 80Y).
請求項5の発明は、請求項1乃至4の何れかに記載の金属調装飾部品(29)の製造方法において、成形補助型(71)とシート成形型(72)とを最も接近させたときに、それら成形補助型(71)及びシート成形型(72)における金属調装飾部品(29)を成形する部分の間に、金属調成形シート(10)の厚さより大きなクリアランス(C)を介在させるところに特徴を有する。 According to a fifth aspect of the present invention, in the method for manufacturing a metallic decorative component (29) according to any one of the first to fourth aspects, the auxiliary molding die (71) and the sheet molding die (72) are brought closest to each other. Further, a clearance (C) larger than the thickness of the metal-molded sheet (10) is interposed between the molding auxiliary mold (71) and the portion of the sheet mold (72) where the metal-shaped decorative part (29) is molded. However, it has characteristics.
請求項6の発明は、請求項5に記載の金属調装飾部品(29)の製造方法において、金属調成形シート(10)の厚さをtとし、クリアランスをCとすると、t+0.2[mm]≦C≦t+1.0[mm]、であるところに特徴を有する。 According to a sixth aspect of the present invention, in the method for manufacturing a metallic decorative component (29) according to the fifth aspect, t + 0.2 [mm] where t is the thickness of the metallic molded sheet (10) and C is the clearance. ] ≦ C ≦ t + 1.0 [mm].
請求項7の発明は、請求項1乃至6の何れかに記載の金属調装飾部品(29)の製造方法において、成形補助型(71)のうち少なくとも金属調成形シート(10)に当接する部分を、オレフィン系又はウレタン系の合成ゴムで形成したところに特徴を有する。 A seventh aspect of the present invention is the method for producing a metallic decorative component (29) according to any one of the first to sixth aspects, wherein at least a portion of the auxiliary molding die (71) that is in contact with the metallic molded sheet (10). Is made of an olefin-based or urethane-based synthetic rubber.
請求項8の発明は、請求項1乃至6の何れかに記載の金属調装飾部品(29)の製造方法において、成形補助型(71)を、アルミ又は鉄で形成すると共に少なくとも金属調成形シート(10)に当接する部分に表面磨きを施しておき、さらに、成形補助型(71)の温度を50〜90度に設定するところに特徴を有する。 The invention according to claim 8 is the method for producing a metallic decorative component (29) according to any one of claims 1 to 6, wherein the forming auxiliary mold (71) is made of aluminum or iron and at least a metallic adjusted sheet. Surface polishing is applied to the portion that contacts (10), and the temperature of the auxiliary molding die (71) is set to 50 to 90 degrees.
請求項9の発明は、請求項1乃至8の何れかに記載の金属調装飾部品(29)の製造方法において、金属調装飾部品(29)の表面に剥離可能なマスキングフィルム(23)を積層しておくところに特徴を有する。 The invention of claim 9 is the method for producing a metallic decorative component (29) according to any one of claims 1 to 8, wherein a peelable masking film (23) is laminated on the surface of the metallic decorative component (29). It has the characteristics in place.
請求項10の発明は、請求項1乃至9の何れかに記載の金属調装飾部品(29)の製造方法において、シート配置工程の前に、金属調成形シート(10)を加熱して軟化させるシート軟化工程を行うところに特徴を有する。 A tenth aspect of the present invention is the method for producing a metallic decorative component (29) according to any one of the first to ninth aspects, wherein the metallic molded sheet (10) is heated and softened before the sheet arranging step. It is characterized in that the sheet softening process is performed.
請求項11の発明は、請求項1乃至10の何れかに記載の金属調装飾部品(29)の製造方法において、シート密着工程では、金属調成形シート(10)とシート成形型(72)との間のガスを吸引し、かつ、金属調成形シート(10)に対してシート成形型(72)と反対側に圧縮ガスによる圧力を付与して、金属調成形シート(10)をシート成形型(72)に密着させるところに特徴を有する。 The invention of claim 11 is the method for producing a metallic decorative component (29) according to any one of claims 1 to 10, wherein in the sheet adhering step, a metallic molded sheet (10) and a sheet molding die (72) And the pressure by compressed gas is applied to the opposite side of the sheet mold (72) to the metal-molded sheet (10), and the metal-molded sheet (10) is formed into a sheet mold (72) has a feature in close contact.
請求項12の発明に係る樹脂成形品(50)の製造方法は、請求項1乃至11の何れかに記載の金属調装飾部品(29)の製造方法にて製造した金属調装飾部品(29)を用いて、樹脂成形品(50)をインサート成形するところに特徴を有する。 A method for producing a resin molded product (50) according to the invention of claim 12 is a metal-like decorative part (29) produced by the method for producing a metal-like decorative part (29) according to any one of claims 1 to 11. It is characterized in that the resin molded product (50) is insert-molded using
請求項13の発明に係る金属調装飾部品成形金型(70)は、複数の熱可塑性樹脂層(11,14)と金属層(13)とを積層して備えた金属調成形シート(10)を、3次元構造の金属調装飾部品(29)に成形するための金属調装飾部品成形金型(70)において、金属調装飾部品(29)を形取ったシート成形型(72)と、シート成形型(72)に敷設された状態の金属調成形シート(10)の一部をシート成形型(72)に向けて押圧し、金属調成形シート(10)をシート成形型(72)の凹凸形状に概ね倣って変形させるための成形補助型(71)と、金属調成形シート(10)をシート成形型(72)の凹凸形状に概ね倣って変形させた状態で、それら金属調成形シート(10)とシート成形型(72)との間のガスを吸引するガス吸引部(73C,74C,78,78P)とを備えたところに特徴を有する。 A metal-tone decorative part molding die (70) according to the invention of claim 13 is provided with a metal-tone molded sheet (10) comprising a plurality of laminated thermoplastic resin layers (11, 14) and a metal layer (13). A metal-like decorative part molding die (70) for molding a metal-like decorative part (29) having a three-dimensional structure, and a sheet-molding die (72) formed from the metal-like decorative part (29), and a sheet A part of the metal-molded sheet (10) laid on the mold (72) is pressed against the sheet-mold (72), and the metal-molded sheet (10) is uneven on the sheet mold (72). In a state in which the forming auxiliary die (71) for deforming substantially following the shape and the metal-like formed sheet (10) are deformed substantially following the uneven shape of the sheet-forming die (72), these metal-like formed sheets ( 10) and the gas between the sheet mold (72) is sucked It has a characteristic that the gas suction part (73C, 74C, 78,78P) at which a.
請求項14の発明は、請求項13に記載の金属調装飾部品成形金型(70)において、成形補助型(71)には、互いに異なるタイミングで金属調成形シート(10)を押圧する複数の押圧部(80X,80Y)が備えられたところに特徴を有する。 The invention according to claim 14 is the metal decorative part molding die (70) according to claim 13, wherein the molding auxiliary mold (71) is provided with a plurality of pressing metal molding sheets (10) at different timings. It is characterized in that the pressing portion (80X, 80Y) is provided.
請求項15の発明は、請求項14に記載の金属調装飾部品成形金型(70)において、複数の押圧部(80X,80Y)は、金属調成形シート(10)のうち金属調装飾部品(29)の中央部になる部分を押圧してから、その中央部になる部分の外側部分を押圧するように構成されたところに特徴を有する。 According to a fifteenth aspect of the present invention, in the metal tone decorative part molding die (70) according to the fourteenth aspect, the plurality of pressing portions (80X, 80Y) are formed of a metal tone decorative part (10) of the metal tone molded sheet (10). 29) It is characterized in that it is configured to press the portion that becomes the central portion and then press the outer portion of the portion that becomes the central portion.
請求項16の発明は、請求項14又は15に記載の金属調装飾部品成形金型(70)において、成形補助型(71)のうち押圧部(80X,80Y)の横隣に設けられ、押圧部(80X,80Y)が金属調成形シート(10)を押圧する前に、シート成形型(72)に備えた凸部(73A)の先端との間に金属調成形シート(10)の厚さより大きなクリアランス(C)を介して対向配置されるガイド部(80A)を備えたところに特徴を有する。 A sixteenth aspect of the present invention is the metallic decorative part molding die (70) according to the fourteenth or fifteenth aspect, wherein the molding auxiliary mold (71) is provided next to the pressing portion (80X, 80Y) and pressed. Before the portion (80X, 80Y) presses the metal-molded sheet (10), the thickness of the metal-molded sheet (10) is between the convex part (73A) provided in the sheet mold (72). It has a feature in that it is provided with a guide portion (80A) arranged to face each other with a large clearance (C).
請求項17の発明は、請求項13乃至16の何れかに記載の金属調装飾部品成形金型(70)において、成形補助型(71)とシート成形型(72)とを最も接近させたときに、それら成形補助型(71)及びシート成形型(72)における金属調装飾部品(29)を成形する部分の間に、金属調成形シート(10)の厚さより大きなクリアランス(C)が介在するように構成したところに特徴を有する。 According to a seventeenth aspect of the present invention, in the metallic decorative part molding die (70) according to any one of the thirteenth to sixteenth aspects, the molding auxiliary mold (71) and the sheet molding mold (72) are brought closest to each other. Further, a clearance (C) larger than the thickness of the metal-molded sheet (10) is interposed between the molding auxiliary mold (71) and the portion of the sheet mold (72) where the metal-shaped decorative part (29) is molded. It has the characteristic in the place comprised in this way.
請求項18の発明は、請求項17に記載の金属調装飾部品成形金型(70)において、金属調成形シート(10)の厚さをtとし、クリアランスをCとすると、t+0.2[mm]≦C≦t+1.0[mm]、であるところに特徴を有する。 According to the eighteenth aspect of the present invention, in the metallic decorative part molding die (70) according to the seventeenth aspect, t + 0.2 [mm] where the thickness of the metallic molded sheet (10) is t and the clearance is C. ] ≦ C ≦ t + 1.0 [mm].
請求項19の発明は、請求項13乃至18の何れかに記載の金属調装飾部品成形金型(70)において、成形補助型(71)のうち少なくとも金属調成形シート(10)に当接する部分を、オレフィン系又はウレタン系の合成ゴムで形成したところに特徴を有する。 A nineteenth aspect of the present invention is the metallic decorative part molding die (70) according to any one of the thirteenth to eighteenth aspects of the present invention, wherein a portion of the auxiliary molding die (71) that abuts at least the metallic molded sheet (10). Is made of an olefin-based or urethane-based synthetic rubber.
請求項20の発明は、請求項13乃至18の何れかに記載の金属調装飾部品成形金型(70)において、成形補助型(71)をアルミ又は鉄で形成しかつ成形補助型(71)の少なくとも金属調成形シート(10)に当接する部分に表面磨きを施したところに特徴を有する。 According to a twentieth aspect of the present invention, in the metallic decorative part molding die (70) according to any one of the thirteenth to eighteenth aspects, the molding auxiliary mold (71) is made of aluminum or iron and the molding auxiliary mold (71). This is characterized in that surface polishing is applied to at least a portion that contacts the metal-like molded sheet (10).
請求項21の発明は、請求項13乃至20の何れかに記載の金属調装飾部品成形金型(70)において、成形補助型(71)及びシート成形型(72)における金属調装飾部品(29)を成形する部分を囲みかつ成形補助型(71)とシート成形型(72)との間に密閉された圧縮ガス充填空間(70L)を形成するための囲壁(75A)と、ガス吸引部(73C,74C,78,78P)がガスを吸引したときに、圧縮ガス充填空間(70L)に圧縮ガスを供給するためのガス供給部(75C)とを備えたところに特徴を有する。 A twenty-first aspect of the present invention is the metallic decorative part molding die (70) according to any one of the thirteenth to twentieth aspects, wherein the metallic decorative part (29) in the auxiliary molding die (71) and the sheet molding die (72) is provided. ) And a surrounding wall (75A) for forming a sealed compressed gas filling space (70L) between the auxiliary molding die (71) and the sheet molding die (72), and a gas suction portion ( 73C, 74C, 78, 78P) is characterized in that it has a gas supply part (75C) for supplying compressed gas to the compressed gas filling space (70L) when the gas is sucked.
[請求項1,12及び13の発明]
請求項1の金属調装飾部品(29)の製造方法及び請求項13の金属調装飾部品成形金型(70)によれば、金属調成形シート(10)を全体的にシート成形型(72)に密着させる前に、成形補助型(71)により金属調成形シート(10)の一部を押圧して、金属調成形シート(10)をシート成形型(72)の凹凸形状に概ね倣って変形させる。このとき、シート成形型(72)のうち凹凸の高低が急激に変化する部分に向けて金属調成形シート(10)が押圧されても、金属調成形シート(10)が全体的にシート成形型(72)に密着させる前であるから、金属調成形シート(10)の全体或いは金属調成形シート(10)の弛んだ部分がシート成形型(72)における凹凸の高低が急激に変化する部分に押し込まれ、金属調成形シート(10)の局所的な塑性変形が緩和される。そして、金属調成形シート(10)が凹凸形状に概ね倣って変形した状態で、金属調成形シート(10)とシート成形型(72)との間のガスが吸引され、金属調成形シート(10)が全体的にシート成形型(72)に密着するので、金属調成形シート(10)の肉厚が従来のように局所的に薄くなることが防がれる。これにより、金属調成形シート(10)を金属調装飾部品(29)に成形しても金属調の光沢を良好に保持することが可能になる。
[Inventions of Claims 1, 12, and 13]
According to the manufacturing method of the metallic decorative component (29) of claim 1 and the metallic decorative component molding die (70) of claim 13, the metallic decorative sheet (10) is entirely formed into a sheet molding die (72). Before the metal mold forming sheet (10) is pressed, a part of the metal-molded sheet (10) is pressed by the molding auxiliary mold (71), and the metal-molded sheet (10) is deformed substantially following the uneven shape of the sheet mold (72). Let At this time, even if the metal tone forming sheet (10) is pressed toward the portion of the sheet forming die (72) where the level of the unevenness changes rapidly, the metal tone forming sheet (10) is entirely formed by the sheet forming die. Since it is before making it closely_contact | adhere to (72), the loose part of the whole metal tone forming sheet (10) or the metal tone forming sheet (10) becomes the part where the level of the unevenness | corrugation in a sheet forming die (72) changes rapidly. It is pushed in and the local plastic deformation of the metallic tone-formed sheet (10) is alleviated. Then, in a state where the metal tone forming sheet (10) is deformed substantially following the concavo-convex shape, the gas between the metal tone forming sheet (10) and the sheet forming die (72) is sucked, and the metal tone forming sheet (10). ) Are in close contact with the sheet mold (72) as a whole, so that the thickness of the metal-molded sheet (10) is prevented from being locally reduced as in the prior art. As a result, even when the metal tone molded sheet (10) is molded into the metal tone decorative part (29), the metal tone gloss can be maintained well.
また、本発明に係る金属調装飾部品(29)の製造方法にて製造した金属調装飾部品(29)を用いて樹脂成形品(50)をインサート成形するので、金属調装飾部品(29)の表面の金属調の光沢を良好に保持することが可能になる(請求項12の発明)。 Moreover, since the resin-molded product (50) is insert-molded using the metallic decorative component (29) manufactured by the manufacturing method of the metallic decorative component (29) according to the present invention, the metallic decorative component (29) It is possible to maintain the metallic gloss of the surface well (the invention of claim 12).
[請求項2,3,14及び15の発明]
請求項2の金属調装飾部品(29)の製造方法及び請求項14の金属調装飾部品成形金型(70)によれば、成形補助型(71)に設けた複数の押圧部(80X,80Y)が、それぞれ金属調成形シート(10)を押圧するタイミングを異ならせたことで、金属調成形シート(10)のうち比較的変形させ難い部分を先に押圧してから比較的変形させ易い部分を押圧することが可能になり、シート成形型(72)に備えた複数の凹凸部分に略均等に金属調成形シート(10)を分配することができる。
[Inventions of Claims 2, 3, 14, and 15]
According to the manufacturing method of the metallic decorative component (29) of claim 2 and the metallic decorative component molding die (70) of claim 14, the plurality of pressing portions (80X, 80Y) provided in the auxiliary molding die (71). ) Have different timings for pressing the metal-molded sheet (10), respectively, so that the portion that is relatively difficult to deform is pressed first in the metal-molded sheet (10) and then relatively easy to deform. Can be pressed, and the metal-molded sheet (10) can be distributed substantially evenly to the plurality of uneven portions provided in the sheet mold (72).
また、金属調成形シート(10)のうち金属調装飾部品(29)になる部分より外側は最終的に除去されるので、請求項3の金属調装飾部品(29)の製造方法及び請求項15の金属調装飾部品成形金型(70)を使用した場合のように、金属調装飾部品(29)の形状に応じて、金属調装飾部品(29)の中央部になる部分を押圧してからその外側部分を押圧することにより、金属調成形シート(10)のうち最終的に除去される部分が金属調装飾部品(29)になる側に効率よく引き込まれ、シート成形型(72)に備えた複数の凹凸部分に略均等に金属調成形シート(10)を分配することができる。 Further, since the outer side of the metallic tone-formed sheet (10) is finally removed from the portion that becomes the metallic tone decorative part (29), the manufacturing method of the metallic tone decorative part (29) according to claim 3 and claim 15 As in the case of using the metal-like decorative part molding die (70), the central part of the metal-like decorative part (29) is pressed according to the shape of the metal-like decorative part (29). By pressing the outer portion, the portion finally removed of the metallic tone-formed sheet (10) is efficiently drawn to the side that becomes the metallic tone decorative part (29), and is prepared for the sheet molding die (72). In addition, the metal-molded sheet (10) can be distributed substantially evenly to the plurality of uneven portions.
[請求項4及び16の発明]
請求項4の金属調装飾部品(29)の製造方法及び請求項16の金属調装飾部品成形金型(70)によれば、ガイド部(80A)とシート成形型(72)における凸部(73A)との間のクリアランス(C)内に金属調成形シート(10)が収まり、押圧部(80X,80Y)が金属調成形シート(10)を押圧したときに、金属調成形シート(10)が凸部(73A)から浮き上がることを防止することが可能になる。これにより、金属調成形シート(10)を凸部(73A)及びその近傍の形状に概ね倣わせて変形させることができる。
[Inventions of Claims 4 and 16]
According to the manufacturing method of the metallic decorative component (29) of claim 4 and the metallic decorative component molding die (70) of claim 16, the guide portion (80A) and the convex portion (73A) in the sheet molding die (72). ) Is placed in the clearance (C) between the metal-formed sheet (10) and the metal-formed sheet (10) is pressed when the pressing portions (80X, 80Y) press the metal-formed sheet (10). It is possible to prevent the protrusion (73A) from floating. Thereby, a metal tone-forming sheet | seat (10) can be deform | transformed in general following the convex part (73A) and the shape of its vicinity.
[請求項5,6,17及び18の発明]
請求項5の金属調装飾部品(29)の製造方法及び請求項17の金属調装飾部品成形金型(70)によれば、成形補助型(71)とシート成形型(72)との間にクリアランス(C)を設けたことにより、成形補助型(71)とシート成形型(72)との間で金属調成形シート(10)が押し潰されることが防がれる。また、クリアランス(C)を設けたことで、成形補助型(71)とシート成形型(72)との間に、金属調成形シート(10)が挟持されなくなるので、シート成形型(72)と金属調成形シート(10)との間のガスを吸引した際に、金属調成形シート(10)全体を変形させることができる。ここでクリアランス(C)は、請求項6及び請求項18の発明のように、金属調成形シート(10)の厚さをtとし、クリアランスをCとすると、t+0.2[mm]≦C≦t+1.0[mm]、であることが好ましい。
[Inventions of Claims 5, 6, 17 and 18]
According to the manufacturing method of the metallic decorative component (29) of claim 5 and the metallic decorative component molding die (70) of claim 17, between the molding auxiliary mold (71) and the sheet molding mold (72). By providing the clearance (C), it is possible to prevent the metallic tone forming sheet (10) from being crushed between the auxiliary forming die (71) and the sheet forming die (72). Also, since the clearance (C) is provided, the metal-molded sheet (10) is not sandwiched between the forming auxiliary mold (71) and the sheet forming mold (72). When the gas between the metallic tone forming sheet (10) is sucked, the entire metallic tone forming sheet (10) can be deformed. Here, the clearance (C) is t + 0.2 [mm] ≦ C ≦, where t is the thickness of the metal-molded sheet (10) and C is the clearance, as in the inventions of claims 6 and 18. It is preferable that t + 1.0 [mm].
[請求項7及び19の発明]
請求項7の金属調装飾部品(29)の製造方法及び請求項19の金属調装飾部品成形金型(70)のように、成形補助型(71)のうち少なくとも金属調成形シート(10)に当接する部分を、オレフィン系又はウレタン系の合成ゴムで形成することで、成形補助型(71)が金属調成形シート(10)に当接したときに金属調成形シート(10)に傷が発生することを防ぐことができる。また、オレフィン系又はウレタン系の合成ゴムは断熱性に優れるので、金属調成形シート(10)から成形補助型(71)に熱が逃げることも防がれる。
[Inventions of Claims 7 and 19]
As in the manufacturing method of the metallic decorative component (29) of claim 7 and the metallic decorative component molding die (70) of claim 19, at least the metallic decorative sheet (10) of the auxiliary molding die (71). By forming the abutting part with an olefin-based or urethane-based synthetic rubber, the metal-forming sheet (10) is scratched when the forming auxiliary mold (71) contacts the metal-forming sheet (10). Can be prevented. Further, since the olefin-based or urethane-based synthetic rubber is excellent in heat insulation, it is also possible to prevent heat from escaping from the metal-like molded sheet (10) to the molding auxiliary mold (71).
[請求項8及び20の発明]
請求項8の金属調装飾部品(29)の製造方法及び請求項20の金属調装飾部品成形金型(70)のように、成形補助型(71)を、アルミ又は鉄で形成すると共に表面磨きを施すことで、成形補助型(71)が金属調成形シート(10)に当接したときに金属調成形シート(10)に傷が発生することを防ぐことができる。また、成形補助型(71)の温度を50〜90度に設定することで、金属調成形シート(10)から成形補助型(71)に熱が逃げることを防ぐこともできる。
[Inventions of Claims 8 and 20]
As in the manufacturing method of the metallic decorative component (29) of claim 8 and the metallic decorative component molding die (70) of claim 20, the auxiliary molding die (71) is formed of aluminum or iron and polished. By applying the above, it is possible to prevent the metal-like shaped sheet (10) from being damaged when the auxiliary molding die (71) comes into contact with the metal-like shaped sheet (10). Moreover, it can also prevent that a heat | fever escapes from a metal tone-forming sheet | seat (10) to the shaping | molding auxiliary die (71) by setting the temperature of an auxiliary shaping | molding die (71) to 50-90 degree | times.
[請求項9の発明]
請求項9の金属調装飾部品(29)の製造方法によれば、金属調成形シート(10)の表面にマスキングフィルム(23)を備えているので、最終的にマスキングフィルム(23)を剥離することで、安定した表面装飾美を有する金属調装飾部品(29)を提供することができる。
[Invention of claim 9]
According to the method for producing a metallic decorative component (29) of claim 9, since the masking film (23) is provided on the surface of the metallic molded sheet (10), the masking film (23) is finally peeled off. Thus, a metallic decorative component (29) having a stable surface decoration can be provided.
[請求項10の発明]
請求項10の金属調装飾部品(29)の製造方法によれば、予め金属調成形シート(10)を加熱して軟化させておいてから、シート成形型(72)に金属調成形シート(10)を対向配置するので、金属調成形シート(10)を容易かつ迅速にシート成形型(72)の凹凸形状に概ね倣った形状に変形させることができる。
[Invention of Claim 10]
According to the manufacturing method of the metallic decorative component (29) of claim 10, the metallic molded sheet (10) is heated and softened in advance, and then the metallic molded sheet (10) is placed on the sheet molding die (72). ) Are arranged opposite to each other, the metal tone-formed sheet (10) can be easily and quickly deformed into a shape generally following the uneven shape of the sheet forming die (72).
[請求項11及び21の発明]
請求項11の金属調装飾部品(29)の製造方法及び請求項20の金属調装飾部品成形金型(70)によれば、金属調成形シート(10)とシート成形型(72)との間のガスを吸引し、かつ、金属調成形シート(10)に対してシート成形型(72)と反対側に圧縮ガスによる圧力を付与することにより、ガスの吸引のみを行う場合より確実に金属調成形シート(10)をシート成形型(72)に密着させることが可能になる。
[Inventions of Claims 11 and 21]
According to the manufacturing method of the metallic decorative component (29) of claim 11 and the metallic decorative component molding die (70) of claim 20, between the metallic molded sheet (10) and the sheet molding die (72). And by applying a pressure by compressed gas on the opposite side of the sheet mold (72) to the metal-molded sheet (10), it is more reliable than the case where only the gas is sucked. The molded sheet (10) can be brought into close contact with the sheet mold (72).
[第1実施形態]
以下、本発明の一実施形態を図1〜図11に基づいて説明する。本実施形態の金属調成形シート10は、図1に示すように、例えば、熱可塑性樹脂層11と、接着剤層12と、金属層13と、透明な熱可塑性樹脂層14と、プライマー層18と、青色顔料インク層15と、透明な耐候性インク層16と、剥離層22と、マスキングフィルム23を順番に積層して構成されている。
[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the metal-like molded sheet 10 of the present embodiment includes, for example, a thermoplastic resin layer 11, an adhesive layer 12, a metal layer 13, a transparent thermoplastic resin layer 14, and a primer layer 18. And a blue pigment ink layer 15, a transparent weather-resistant ink layer 16, a release layer 22, and a masking film 23.
熱可塑性樹脂層11は、例えばABS(アクリロニトリル−ブタジエン−スチレン樹脂)製のフィルムで構成されている。この熱可塑性樹脂層11の厚さは、例えば、50〜1500μmになっている。そして、この熱可塑性樹脂層11の一面にウレタン系又はアクリル系の接着剤を、例えば1〜20μmの厚さとなるように塗布して接着剤層12が形成されている。 The thermoplastic resin layer 11 is made of, for example, an ABS (acrylonitrile-butadiene-styrene resin) film. The thickness of this thermoplastic resin layer 11 is 50-1500 micrometers, for example. An adhesive layer 12 is formed on one surface of the thermoplastic resin layer 11 by applying a urethane or acrylic adhesive to a thickness of, for example, 1 to 20 μm.
なお、熱可塑性樹脂層11は、ABS以外に、ポリ塩化ビニル系、ポリオレフィン系、ポリスチレン系、ポリアクリル系、ポリウレタン系、ポリアミド系、ポリカーボネート系等の熱可塑性樹脂に適宜変更してもよい。 In addition to the ABS, the thermoplastic resin layer 11 may be appropriately changed to a thermoplastic resin such as polyvinyl chloride, polyolefin, polystyrene, polyacryl, polyurethane, polyamide, or polycarbonate.
透明な熱可塑性樹脂層14は、例えばPET(ポリエチレンテレフタレート)製のフィルムで構成されており、その厚さは、例えば25〜300μmになっている。また、透明な熱可塑性樹脂層14の表裏の一方の面に、例えば、インジウムを5〜300nmの厚さとなるように蒸着させて金属層13が形成され、これら透明な熱可塑性樹脂層14と金属層13とにより金属蒸着フィルム21が構成されている。そして、金属蒸着フィルム21のうち金属層13側を前記した接着剤層12に密着させ、これにより金属層13が1対の熱可塑性樹脂層11,14に挟まれた所謂ラミネート構造になっている。また、透明な熱可塑性樹脂層14のうち金属層13と反対側の面には、塗料の固着強度を高めるための下塗り剤が塗布されてプライマー層18が形成されている。 The transparent thermoplastic resin layer 14 is made of, for example, a film made of PET (polyethylene terephthalate), and has a thickness of, for example, 25 to 300 μm. Moreover, for example, indium is vapor-deposited so as to have a thickness of 5 to 300 nm on one surface of the front and back surfaces of the transparent thermoplastic resin layer 14, and the metal layer 13 is formed. The layer 13 constitutes a metal vapor deposition film 21. Then, the metal layer 13 side of the metal vapor-deposited film 21 is brought into close contact with the above-described adhesive layer 12, thereby forming a so-called laminate structure in which the metal layer 13 is sandwiched between a pair of thermoplastic resin layers 11 and 14. . Further, a primer layer 18 is formed on the surface of the transparent thermoplastic resin layer 14 opposite to the metal layer 13 by applying a primer for increasing the adhesion strength of the paint.
青色顔料インク層15は、一般に使用されている工業用の青色顔料を含んだウレタン系又はアクリル系のインクを、透明な熱可塑性樹脂層14のうちプライマー層18を備えた面にスクリーン印刷することで形成されている。また、耐候性インク層16は、一般に使用されているウレタン系又はアクリル系の耐候性インクを、青色顔料インク層15に重ねてスクリーン印刷することで形成されている。 The blue pigment ink layer 15 is obtained by screen-printing a commonly used urethane-based or acrylic-based ink containing an industrial blue pigment on the surface of the transparent thermoplastic resin layer 14 provided with the primer layer 18. It is formed with. The weather resistant ink layer 16 is formed by screen-printing a commonly used urethane or acrylic weather resistant ink on the blue pigment ink layer 15.
ここで、青色顔料インク層15及び耐候性インク層16の各厚さは、5〜8μmとなっており、従って、青色顔料インク層15と耐候性インク層16とを合わせた厚さは、10〜16μmとなっている。青色顔料インク層15及び耐候性インク層16の各厚さは、スクリーン印刷に用いるスクリーンのメッシュ数により調節することができる。具体的には、150〜350メッシュのスクリーンを用いることで、1回のスクリーン印刷で厚さ5〜8μmの青色顔料インク層15及び耐候性インク層16を形成することができる。 Here, each thickness of the blue pigment ink layer 15 and the weather-resistant ink layer 16 is 5 to 8 μm. Therefore, the total thickness of the blue pigment ink layer 15 and the weather-resistant ink layer 16 is 10 It is ˜16 μm. Each thickness of the blue pigment ink layer 15 and the weather-resistant ink layer 16 can be adjusted by the number of meshes of the screen used for screen printing. Specifically, by using a screen of 150 to 350 mesh, the blue pigment ink layer 15 and the weather resistant ink layer 16 having a thickness of 5 to 8 μm can be formed by one screen printing.
なお、目的の厚さに応じて、150〜350メッシュのスクリーンを使い分けてスクリーン印刷を行うことが好ましい。また、スクリーン印刷を複数回行って、青色顔料インク層15及び耐候性インク層16の厚さを調節してもよい。 Note that it is preferable to perform screen printing using a 150 to 350 mesh screen depending on the target thickness. Further, the thickness of the blue pigment ink layer 15 and the weather resistant ink layer 16 may be adjusted by performing screen printing a plurality of times.
マスキングフィルム23は、例えばポリエステル系の樹脂を厚さ25〜300μmのフィルム状に形成してなる。また、マスキングフィルム23の一方の面には例えばエッチング処理が施され、そこにアクリル系粘着剤を塗布することで剥離層22が形成されている。そして、この剥離層22が耐候性インク層16に密着している。これにより、耐候性インク層16から、剥離層22と共にマスキングフィルム23が剥離可能となっている。 The masking film 23 is formed, for example, by forming a polyester resin into a film shape having a thickness of 25 to 300 μm. In addition, one surface of the masking film 23 is subjected to, for example, an etching process, and the release layer 22 is formed by applying an acrylic pressure-sensitive adhesive thereto. The release layer 22 is in close contact with the weather-resistant ink layer 16. Thereby, the masking film 23 can be peeled from the weather-resistant ink layer 16 together with the peeling layer 22.
このように構成された金属調成形シート10を用いて製造された樹脂成形品として、例えば図2に示した自動車のホイール部品50が挙げられる。このホイール部品50は、円形基部51に複数の係止爪53を一体形成してなる。詳細には、図3に示すように円形基部51は、全体として周縁部から中心部に向かって徐々に図3の上方側に膨らむように湾曲しており、円形基部51の周縁部からは図3の下方側に向かって周壁52が突出している。そして、その周壁52の下端から前記した複数の係止爪53が張り出し、これら係止爪53が図示しないアルミホイールの中央に形成された孔に挿入されて固定される。 An example of a resin molded product manufactured using the metal-like molded sheet 10 configured as described above is an automobile wheel part 50 shown in FIG. The wheel component 50 is formed by integrally forming a plurality of locking claws 53 on a circular base 51. Specifically, as shown in FIG. 3, the circular base 51 is curved so as to gradually swell upward from the peripheral edge toward the center as shown in FIG. 3. The peripheral wall 52 protrudes toward the lower side of 3. The plurality of locking claws 53 project from the lower end of the peripheral wall 52, and these locking claws 53 are inserted into a hole formed at the center of an aluminum wheel (not shown) and fixed.
ホイール部品50の表面50Aには、その周縁部からリング部54が上方に***している。また、表面50Aの中央には、文字「P」(図2参照)を形取ったエンブレム部55が上方に***している。そして、ホイール部品50は、全体として熱可塑性樹脂(例えば、ABS、変性PPE、PC、PC+ABS、PP、PA等)で構成されており、円形基部51の表面全体に金属調成形シート10を用いた装飾が施されている。 On the surface 50 </ b> A of the wheel component 50, a ring portion 54 protrudes upward from its peripheral edge. Further, an emblem portion 55 shaped like a letter “P” (see FIG. 2) is raised upward in the center of the surface 50A. The wheel component 50 is composed of a thermoplastic resin (for example, ABS, modified PPE, PC, PC + ABS, PP, PA, etc.) as a whole, and the metal-molded sheet 10 is used for the entire surface of the circular base 51. Decorated.
このホイール部品50を製造するためには、金属調成形シート10から3次元構造の金属調装飾部品29(図3参照)を成形し、この金属調装飾部品29を用いてホイール部品50をインサート成形する。図4〜図9には、金属調成形シート10から金属調装飾部品29を成形するための金属調装飾部品成形金型70が示されている。金属調装飾部品成形金型70は、成形補助型71とシート成形型72とを上下方向に対向配置して備え、シート成形型72に対して成形補助型71が上下動することで、金属調装飾部品成形金型70の型開き及び型閉じが行われる。 In order to manufacture the wheel part 50, a metal-like decorative part 29 (see FIG. 3) having a three-dimensional structure is formed from the metal-like molded sheet 10, and the wheel part 50 is insert-molded using the metal-like decorative part 29. To do. FIGS. 4 to 9 show a metal tone decorative part molding die 70 for molding the metal tone decorative part 29 from the metal tone molded sheet 10. The metal-like decorative part molding die 70 includes a molding auxiliary die 71 and a sheet molding die 72 arranged so as to be opposed to each other in the vertical direction. Opening and closing of the decorative part molding die 70 are performed.
シート成形型72は、下側基部74と複数の成形凹凸部73(図4〜図7には、1つの成形凹凸部73のみが示されている)とを備えてなり、下側基部74の平坦な上面から成形凹凸部73が扁平円台状をなして突出している。成形凹凸部73のうち下側基部74の上面からの突出部分は、ホイール部品50の円形基部51に対応している。具体的には、成形凹凸部73の上面周縁部からは、ホイール部品50のリング部54を成形するためのリング成形凸部73Bが突出している。また、成形凹凸部73の上面中央には、ホイール部品50のエンブレム部55に対応して文字「P」(図2参照)を形取ったエンブレム成形凸部73Aが突出している。そして、図4〜図7には、文字「P」における上側の環状部に囲まれた部分が、第1の成形凹部73Xとして示されると共に、エンブレム成形凸部73Aとリング成形凸部73Bとの間が、第2の成形凹部73Yとして示されている。 The sheet molding die 72 includes a lower base portion 74 and a plurality of molding uneven portions 73 (only one forming uneven portion 73 is shown in FIGS. 4 to 7). The molding uneven part 73 protrudes from the flat upper surface in a flat disk shape. A protruding portion from the upper surface of the lower base 74 in the molding uneven portion 73 corresponds to the circular base 51 of the wheel component 50. Specifically, a ring forming convex part 73 </ b> B for forming the ring part 54 of the wheel component 50 protrudes from the upper surface peripheral part of the forming uneven part 73. Further, at the center of the upper surface of the molding uneven portion 73, an emblem molding convex portion 73 </ b> A having a letter “P” (see FIG. 2) corresponding to the emblem portion 55 of the wheel component 50 protrudes. 4 to 7, the portion surrounded by the upper annular portion in the letter “P” is shown as the first molding concave portion 73X, and the emblem molding convex portion 73A and the ring molding convex portion 73B. The space is shown as the second molding recess 73Y.
また、成形凹凸部73には、所定複数箇所にガス排出孔73Cが形成され、これらガス排出孔73Cが下側基部74に形成されたガス排出孔74Cに連通し、そのガス排出孔74Cが例えばパイプ78Pを介して吸引ポンプ78に接続されている。 In addition, gas discharge holes 73C are formed at a plurality of predetermined positions in the formed uneven portion 73, and these gas discharge holes 73C communicate with the gas discharge holes 74C formed in the lower base 74, and the gas discharge holes 74C are, for example, It is connected to a suction pump 78 via a pipe 78P.
成形補助型71は、上側基台75と複数の押圧凹凸部76(図4〜図7には1つの押圧凹凸部76のみが示されている)とからなる。上側基台75には、下面が開放しかつ成形凹凸部73を受容可能な下向凹所75Lが形成されている。その下向凹所75Lを囲む囲壁75Aは、下側基部74の上面周縁に接合可能となっている。また、囲壁75Aの下面には、全周に亘ってOリング溝75Mが形成され、そこにOリング75Dが装着されている。 The molding auxiliary mold 71 includes an upper base 75 and a plurality of pressing uneven portions 76 (only one pressing uneven portion 76 is shown in FIGS. 4 to 7). The upper base 75 is formed with a downward recess 75 </ b> L having an open lower surface and capable of receiving the molding uneven portion 73. The surrounding wall 75 </ b> A surrounding the downward recess 75 </ b> L can be joined to the periphery of the upper surface of the lower base 74. Further, an O-ring groove 75M is formed on the entire lower surface of the surrounding wall 75A, and an O-ring 75D is attached thereto.
成形補助型71の押圧凹凸部76は、下向凹所75Lの奥側上面に配置されて、シート成形型72の成形凹凸部73に対向している。押圧凹凸部76は、例えば、JIS A硬度30〜90度のオレフィン系又はウレタン系の合成ゴムで構成され、成形凹凸部73の凹凸を概ね反転させた形状になっている。具体的には、成形凹凸部73の第1の成形凹部73Xに向かって突出した第1の押圧部76Xと、成形凹凸部73の第2の成形凹部73Yに向かって突出した第2の押圧部76Yとを備えると共に、成形凹凸部73のエンブレム成形凸部73Aと対応した部分を陥没させた凸部受容部76Aが形成されている。 The pressing uneven portion 76 of the auxiliary forming die 71 is disposed on the upper surface on the back side of the downward recess 75 </ b> L and faces the forming uneven portion 73 of the sheet forming die 72. The pressing uneven portion 76 is made of, for example, an olefin-based or urethane-based synthetic rubber having a JIS A hardness of 30 to 90 degrees, and has a shape in which the unevenness of the formed uneven portion 73 is substantially reversed. Specifically, the first pressing portion 76X protruding toward the first molding recess 73X of the molding uneven portion 73 and the second pressing portion protruding toward the second molding recess 73Y of the molding uneven portion 73. 76Y, and a convex portion receiving portion 76A in which a portion corresponding to the emblem molding convex portion 73A of the molded concave and convex portion 73 is depressed is formed.
そして、図6に示したように成形補助型71の上側基台75がシート成形型72の下側基部74に金属調成形シート10を介して接合され、金属調装飾部品成形金型70が閉じた状態になると、押圧凹凸部76の第1及び第2の押圧部76X,76Yが、成形凹凸部73の第1及び第2の成形凹部73X,73Yに突入し、かつ、押圧凹凸部76の凸部受容部76Aに、成形凹凸部73のエンブレム成形凸部73Aが受容される。このとき、成形凹凸部73と押圧凹凸部76との間には、図8に示すように、金属調成形シート10の厚さよりも大きなクリアランスCが形成されるようになっている。より具体的には、成形凹凸部73と押圧凹凸部76との間のクリアランスCは、マスキングフィルム23を含めた金属調成形シート10の全体の厚さをtとすると、金属調装飾部品成形金型70の型閉じ方向(図8の上下方向)におけるクリアランスCの寸法Cは、
t+0.2[mm]≦C≦t+1.0[mm]
、となるように設定されている。
Then, as shown in FIG. 6, the upper base 75 of the auxiliary molding die 71 is joined to the lower base 74 of the sheet molding die 72 via the metal-like molded sheet 10, and the metal-like decorative part molding die 70 is closed. In this state, the first and second pressing portions 76X and 76Y of the pressing uneven portion 76 enter the first and second forming concave portions 73X and 73Y of the forming uneven portion 73, and the pressing uneven portion 76 The emblem molding convex portion 73A of the molding concavo-convex portion 73 is received by the convex portion receiving portion 76A. At this time, a clearance C larger than the thickness of the metal-molded sheet 10 is formed between the formed uneven portion 73 and the pressed uneven portion 76 as shown in FIG. More specifically, the clearance C between the formed uneven portion 73 and the pressed uneven portion 76 is a metal-like decorative part molding metal, where t is the total thickness of the metal-like formed sheet 10 including the masking film 23. The dimension C of the clearance C in the mold closing direction (vertical direction in FIG. 8) of the mold 70 is
t + 0.2 [mm] ≦ C ≦ t + 1.0 [mm]
, Is set to be.
金属調装飾部品成形金型70の構成は以上であり、この金属調装飾部品成形金型70を用いて以下のようにして金属調成形シート10から金属調装飾部品29が成形される。金属調成形シート10のうちマスキングフィルム23を備えた側を上側に向けて、その金属調成形シート10の縁部をクランプ77(図4参照)にて把持して略水平状態に保持する。この状態において、本発明に係るシート軟化工程を行う。即ち、ヒーター(図示せず)で金属調成形シート10の両面を加熱して軟化させる。 The configuration of the metallic decorative component molding die 70 is as described above, and the metallic decorative component 29 is molded from the metallic molded sheet 10 using the metallic decorative component molding die 70 as follows. With the side of the metal tone forming sheet 10 provided with the masking film 23 facing upward, the edge of the metal tone forming sheet 10 is held by a clamp 77 (see FIG. 4) and held in a substantially horizontal state. In this state, the sheet softening process according to the present invention is performed. That is, both surfaces of the metallic tone-formed sheet 10 are heated and softened by a heater (not shown).
次いで、本発明に係るシート配置工程を行う。即ち、図4に示すように、金属調装飾部品成形金型70を型開き状態にして成形補助型71とシート成形型72との間に金属調成形シート10を配置する。なお、クランプ77は、成形補助型71とシート成形型72との間から側方に外れた位置に配置する。そして、シート成形型72を加熱した状態にして、クランプ77,77を下方に移動し、図5に示すようにシート成形型72の上面に金属調成形シート10を押し付ける。これにより、金属調成形シート10は、シート成形型72のエンブレム成形凸部73A及びリング成形凸部73Bの上端部に部分的に当接して、それらエンブレム成形凸部73A及びリング成形凸部73Bの間で張られ、第1及び第2の成形凹部73X,73Yの底面から浮いた状態になる、 Subsequently, the sheet | seat arrangement | positioning process which concerns on this invention is performed. That is, as shown in FIG. 4, the metal-like decorative sheet 10 is placed between the auxiliary molding die 71 and the sheet-forming die 72 with the metal-like decorative part molding die 70 in an open state. The clamp 77 is disposed at a position that is laterally disengaged from between the forming auxiliary mold 71 and the sheet forming mold 72. Then, the sheet forming mold 72 is heated, the clamps 77 and 77 are moved downward, and the metal tone forming sheet 10 is pressed against the upper surface of the sheet forming mold 72 as shown in FIG. As a result, the metallic tone forming sheet 10 partially abuts on the upper end portions of the emblem forming convex portion 73A and the ring forming convex portion 73B of the sheet forming die 72, and the emblem forming convex portion 73A and the ring forming convex portion 73B. Between the first and second molding recesses 73X and 73Y,
この状態で、本発明に係るシート押圧工程を行う。そのために、成形補助型71をシート成形型72に向けて降下させていく。すると、その過程で成形補助型71における押圧凹凸部76の第1と第2の押圧部76X,76Yとが金属調成形シート10に当接する。そして、成形補助型71をさらに降下すると、第1の押圧部76Xが金属調成形シート10を成形凹凸部73の第1の成形凹部73X内に押し込み、第2の押圧部76Yが金属調成形シート10を成形凹凸部73の第2の成形凹部73Y内に押し込む。このとき、未だ金属調成形シート10全体はシート成形型72に密着していないので、金属調成形シート10全体が略均等に引っ張られる。特に、金属調成形シート10のうちリング成形凸部73Bに当接した部分とクランプ77との間で弛んでいる部分が引っ張られる。これにより、金属調成形シート10のうち第1と第2の押圧部76X,76Yが当接した部分が局所的に変形することが防がれる。 In this state, the sheet pressing step according to the present invention is performed. For this purpose, the forming auxiliary mold 71 is lowered toward the sheet forming mold 72. Then, in the process, the first and second pressing portions 76 </ b> X and 76 </ b> Y of the pressing concavo-convex portion 76 in the auxiliary molding die 71 come into contact with the metallic tone forming sheet 10. Then, when the forming auxiliary die 71 is further lowered, the first pressing portion 76X pushes the metal tone forming sheet 10 into the first forming recess 73X of the forming uneven portion 73, and the second pressing portion 76Y becomes the metal tone forming sheet. 10 is pushed into the second molding recess 73 </ b> Y of the molding uneven part 73. At this time, since the entire metal tone forming sheet 10 is not yet in close contact with the sheet forming die 72, the entire metal tone forming sheet 10 is pulled substantially evenly. In particular, the slack portion between the portion in contact with the ring forming convex portion 73 </ b> B and the clamp 77 in the metal tone forming sheet 10 is pulled. Thereby, it can prevent that the part which the 1st and 2nd press part 76X, 76Y contact | abutted among the metal tone-forming sheets 10 deform | transforms locally.
成形補助型71がさらに降下すると、金属調成形シート10のうち金属調装飾部品29になる部分の外側部分が、成形補助型71の囲壁75Aとシート成形型72の上面周縁部との間に挟まれ、金属調装飾部品成形金型70が型閉じ状態になる。このとき、成形補助型71の押圧凹凸部76とシート成形型72の成形凹凸部73とは、図8に示すように金属調成形シート10の厚さより大きなクリアランスCを介して離れているので、金属調成形シート10が、押圧凹凸部76と成形凹凸部73との間で押し潰されて局所的に金属調成形シート10が圧延されることもない。また、押圧凹凸部76は合成ゴム製であるので、金属製とした場合に比べて弾性が高く、金属調成形シート10に傷が付くことが防止される。その上、金属調成形シート10の表面はマスキングフィルム23にて覆われているので、仮に金属調成形シート10に傷が付いたとしても、金属調装飾部品29が完成した後にマスキングフィルム23を剥離することで、その傷がマスキングフィルム23と共に除去される。また、オレフィン系又はウレタン系の合成ゴムは断熱性に優れているので、金属調成形シート10から成形補助型71に熱が逃げることも防がれる。 When the forming auxiliary die 71 is further lowered, the outer portion of the metal forming sheet 10 that becomes the metallic decorative component 29 is sandwiched between the surrounding wall 75A of the forming auxiliary die 71 and the upper peripheral edge of the sheet forming die 72. As a result, the metallic decorative part molding die 70 is closed. At this time, since the pressing uneven portion 76 of the forming auxiliary mold 71 and the forming uneven portion 73 of the sheet forming die 72 are separated via a clearance C larger than the thickness of the metal tone forming sheet 10 as shown in FIG. The metallic tone-formed sheet 10 is not crushed between the pressing unevenness portion 76 and the forming unevenness portion 73, and the metallic tone-forming sheet 10 is not locally rolled. Further, since the pressing uneven portion 76 is made of synthetic rubber, it has higher elasticity than that made of metal and prevents the metal-like molded sheet 10 from being damaged. In addition, since the surface of the metal-like molded sheet 10 is covered with the masking film 23, even if the metal-like molded sheet 10 is damaged, the masking film 23 is peeled off after the metal-like decorative component 29 is completed. Thus, the scratch is removed together with the masking film 23. Further, since the olefin-based or urethane-based synthetic rubber is excellent in heat insulation, it is also possible to prevent heat from escaping from the metallic tone forming sheet 10 to the forming auxiliary mold 71.
金属調装飾部品成形金型70が型閉じ状態になると、図6に示すように、成形補助型71の下向凹所75Lがシート成形型72によって塞がれて、成形補助型71とシート成形型72との間に圧縮ガス充填空間70Lが形成される。この状態で本発明に係るシート密着工程を行う。そのためには、吸引ポンプ78を起動して成形補助型71と金属調成形シート10との間のガスを吸引すると共に、上側基台75に形成されたガスチャージ孔75Cから圧縮ガス充填空間70L内に圧縮ガスをチャージする。これにより、図7に示すように、金属調成形シート10がシート成形型72の上面に密着する。このとき、金属調成形シート10は、予めシート押圧工程においてシート成形型72の凹凸に概ね倣った形状に変形させてあるので、シート密着工程における金属調成形シート10の変形量は僅かである。具体的には、シート成形型72において凹凸の高低が急激に変化する部分である、エンブレム成形凸部73A及び第1の成形凹部73Xにおいては、シート密着工程を行う前は、図8に示すように、金属調成形シート10はエンブレム成形凸部73Aの上面に当接しかつ第1の成形凹部73Xの内側面及び底面から浮いた状態になっている。そして、シート密着工程を行うと、図9に示すように、金属調成形シート10が僅かに変形して、第1の成形凹部73Xの内側面及び底面に密着する。ここで、金属調成形シート10は、成形補助型71とシート成形型72との間にクリアランスCを設けたことで、成形補助型71とシート成形型72との間で比較的自由に伸びる。即ち、金属調成形シート10の広範囲が伸び代となり、シート密着高低においても金属調成形シート10の肉厚が局所的に薄くなることが防がれる。 When the metallic decorative part molding die 70 is in the closed state, as shown in FIG. 6, the downward recess 75L of the molding auxiliary mold 71 is closed by the sheet molding mold 72, and the molding auxiliary mold 71 and the sheet molding are formed. A compressed gas filling space 70 </ b> L is formed between the mold 72. In this state, the sheet contact process according to the present invention is performed. For this purpose, the suction pump 78 is activated to suck the gas between the auxiliary molding die 71 and the metallic tone forming sheet 10, and from the gas charge hole 75C formed in the upper base 75 into the compressed gas filling space 70L. Charge with compressed gas. Thereby, as shown in FIG. 7, the metallic tone forming sheet 10 is in close contact with the upper surface of the sheet forming die 72. At this time, since the metal-formed sheet 10 has been deformed in advance in a shape substantially following the irregularities of the sheet-forming mold 72 in the sheet pressing process, the amount of deformation of the metal-formed sheet 10 in the sheet contact process is small. Specifically, in the emblem molding convex portion 73A and the first molding concave portion 73X, which are portions where the level of the unevenness in the sheet molding die 72 changes abruptly, as shown in FIG. In addition, the metallic tone forming sheet 10 is in contact with the upper surface of the emblem forming convex portion 73A and is floating from the inner side surface and the bottom surface of the first forming concave portion 73X. And if a sheet | seat contact | adherence process is performed, as shown in FIG. 9, the metal tone shaping | molding sheet | seat 10 will deform | transform slightly, and will closely_contact | adhere to the inner surface and bottom face of the 1st shaping | molding recessed part 73X. Here, the metallic tone-formed sheet 10 extends relatively freely between the forming auxiliary mold 71 and the sheet forming mold 72 by providing the clearance C between the forming auxiliary mold 71 and the sheet forming mold 72. That is, the wide range of the metal-like molded sheet 10 becomes an extension allowance, and it is possible to prevent the thickness of the metal-like molded sheet 10 from being locally reduced even when the sheet adhesion is high or low.
シート密着工程が終了したら、シート成形型72を冷却し、金属調成形シート10が硬化したところで金属調成形シート10を金属調装飾部品成形金型70から取り外す。金属調装飾部品成形金型70から取り出された金属調成形シート10は、図10に示すように、平坦部10Aから金属調装飾部品29に相当する複数のドーム部10Bを***させた構造をなしている。そして、各ドーム部10Bを平坦部10Aから切り離すことで、ドーム部10Bが金属調装飾部品29となる。以上で金属調装飾部品29の製造工程が終了する。 When the sheet adhering step is completed, the sheet forming die 72 is cooled, and when the metal tone forming sheet 10 is cured, the metal tone forming sheet 10 is removed from the metal tone decorative part molding die 70. The metal tone forming sheet 10 taken out from the metal tone decorative part molding die 70 has a structure in which a plurality of dome parts 10B corresponding to the metal tone decorative part 29 are raised from the flat part 10A as shown in FIG. ing. And each dome part 10B is cut | disconnected from 10A of flat parts, and the dome part 10B becomes the metallic decoration component 29. FIG. This completes the manufacturing process of the metallic decorative component 29.
このようにして製造された金属調装飾部品29を用いて、ホイール部品50をインサート成形する。図11には、インサート成形を行うための射出成形金型60が示されている。射出成形金型60は、例えば、上型61と下型62と、スライド金型66,67とを備えてなる。上型61の下面には、金属調装飾部品29の形状に対応して窪んだ上型凹所63が形成されている。また、下型62にはその上型凹所63に向かって突出した丘陵部64が形成されると共に、丘陵部64を側方から挟むようにして1対のスライド金型66,67が対向配置されている。 The wheel part 50 is insert-molded using the metallic decorative part 29 manufactured in this way. FIG. 11 shows an injection mold 60 for performing insert molding. The injection mold 60 includes, for example, an upper mold 61, a lower mold 62, and slide molds 66 and 67. On the lower surface of the upper mold 61, an upper mold recess 63 is formed which is depressed corresponding to the shape of the metallic decorative component 29. Further, the lower mold 62 is formed with a hill portion 64 protruding toward the upper mold recess 63, and a pair of slide molds 66 and 67 are arranged opposite to each other so as to sandwich the hill portion 64 from the side. Yes.
ホイール部品50をインサート成形するには、射出成形金型60を型開きして、金属調装飾部品29を上型凹所63に嵌合固定する。そして、射出成形金型60を閉じて、下型62の丘陵部64を金属調装飾部品29の内側に突入させ、金属調装飾部品29と丘陵部64との間に略均一な厚さの成形空間(図示せず)を形成すると共に、丘陵部64の側面に、1対のスライド金型66,67を突き合わせて係止爪成形空間68を形成する。この状態で下型62に備えたゲート部69からそれら成形空間に溶融樹脂を充填する。そして、射出成形金型60を冷却して溶融樹脂が固化してから射出成形金型60の型開きを行う。これにより、図2及び図3に示すように、ホイール部品50における表面50Aが、金属調成形シート10によって覆われることで、金属調の装飾が施された状態になり、ホイール部品50の製造工程が終了する。 In order to insert-mold the wheel part 50, the injection mold 60 is opened and the metallic decorative part 29 is fitted and fixed to the upper mold recess 63. Then, the injection mold 60 is closed, and the hill part 64 of the lower mold 62 is plunged into the metal-like decorative part 29, and molding with a substantially uniform thickness is performed between the metal-like decorative part 29 and the hill part 64. A space (not shown) is formed, and a pair of slide molds 66 and 67 are abutted on the side surface of the hill portion 64 to form a locking claw forming space 68. In this state, molten resin is filled into the molding space from the gate portion 69 provided in the lower mold 62. The injection mold 60 is opened after the injection mold 60 is cooled and the molten resin is solidified. As a result, as shown in FIGS. 2 and 3, the surface 50 </ b> A of the wheel component 50 is covered with the metal-like molded sheet 10, so that a metal-like decoration is applied, and the manufacturing process of the wheel component 50 is performed. Ends.
ホイール部品50は、図示しないホイールに組み付けられ、例えば、そのホイールを備えた車両が購入者に渡される前にマスキングフィルム23を金属調成形シート10から剥離する。なお、金属調成形シート10からマスキングフィルム23を剥がすためには、例えば、粘着シートをホイール部品50の表面50Aに押し付けた後に引き離せばよい。 The wheel component 50 is assembled to a wheel (not shown), and, for example, the masking film 23 is peeled off from the metal-molded sheet 10 before a vehicle equipped with the wheel is delivered to the purchaser. In order to peel off the masking film 23 from the metal-like molded sheet 10, for example, the pressure-sensitive adhesive sheet may be pressed after being pressed against the surface 50 </ b> A of the wheel component 50.
このように本実施形態の金属調装飾部品29の製造方法及び金属調装飾部品成形金型70によれば、金属調成形シート10を全体的にシート成形型72に密着させる前に、成形補助型71により金属調成形シート10の一部を押圧して、金属調成形シート10をシート成形型72の凹凸形状に概ね倣って変形させるので、このとき、シート成形型72のうち凹凸の高低が急激に変化する部分に向けて金属調成形シート10が押圧されても、金属調成形シート10の全体或いは金属調成形シート10の弛んだ部分が、シート成形型72における凹凸の高低が急激に変化する部分に押し込まれ、金属調成形シート10の局所的な塑性変形が緩和される。そして、金属調成形シート10が凹凸形状に概ね倣って変形した状態で、金属調成形シート10とシート成形型72との間のガスが吸引され、金属調成形シート10が全体的にシート成形型72に密着するので、金属調成形シート10の肉厚が従来のように局所的に薄くなることが防がれる。これにより、金属調成形シート10を金属調装飾部品29に成形しても金属調の光沢を良好に保持することが可能になる。また、このようにして製造された金属調装飾部品29を用いてホイール部品50をインサート成形するので、ホイール部品50の金属調の光沢を良好に保持することが可能になる。さらに、金属調成形シート10の表面にマスキングフィルム23を備えているので、最終的にマスキングフィルム23を剥離することで、安定した表面装飾美を有する金属調装飾部品29を提供することができる。 As described above, according to the manufacturing method of the metallic tone decorative part 29 and the metallic tone decorative part molding die 70 of the present embodiment, the molding auxiliary mold is formed before the metallic tone molded sheet 10 is entirely adhered to the sheet molding die 72. 71, a part of the metallic tone forming sheet 10 is pressed to deform the metallic tone forming sheet 10 substantially following the concave and convex shape of the sheet forming die 72. Even if the metal-molded sheet 10 is pressed toward the portion that changes, the overall roughness of the metal-molded sheet 10 or the slack portion of the metal-molded sheet 10 changes rapidly in the unevenness of the sheet mold 72. It is pushed into the part, and local plastic deformation of the metallic tone-formed sheet 10 is alleviated. Then, in a state where the metal tone forming sheet 10 is deformed substantially following the concavo-convex shape, the gas between the metal tone forming sheet 10 and the sheet forming die 72 is sucked, and the metal tone forming sheet 10 is wholly the sheet forming die. Since it adheres to 72, it is prevented that the thickness of the metallic tone-formed sheet 10 is locally reduced as in the prior art. As a result, even when the metal-like molded sheet 10 is molded into the metal-like decorative part 29, it is possible to maintain a good metallic tone gloss. In addition, since the wheel part 50 is insert-molded using the metallic decorative part 29 manufactured in this way, the metallic gloss of the wheel part 50 can be maintained well. Furthermore, since the masking film 23 is provided on the surface of the metal-like molded sheet 10, the metal-like decorative component 29 having a stable surface decoration can be provided by finally peeling the masking film 23.
[第2実施形態]
本実施形態は、図12〜図17に示されており、成形補助型71に備えた押圧凹凸部80の構成が、第1実施形態の成形補助型71に備えた押圧凹凸部76とは異なる。以下、第1実施形態と異なる構成に関してのみ説明し、第1実施形態と同じ構成に関しては、同一符号を付して重複した説明は省略する。
[Second Embodiment]
This embodiment is shown in FIG. 12 to FIG. 17, and the configuration of the pressing uneven portion 80 provided in the forming auxiliary mold 71 is different from the pressing uneven portion 76 provided in the forming auxiliary mold 71 of the first embodiment. . Hereinafter, only the configuration different from that of the first embodiment will be described, and the same configuration as that of the first embodiment will be denoted by the same reference numerals and redundant description will be omitted.
図12に示すように、本実施形態の成形補助型71に備えた押圧凹凸部80は、上側基台75に固定された固定部80Zとその固定部80Zに対して上下方向に直動する第1及び第2の押圧部80X,80Yとを備えてなる。第1の押圧部80Xの下端部は、第1実施形態の第1の押圧部76Xと同じ形状をなし、シート成形型72に備えた第1の成形凹部73Xに対向している。この第1の押圧部80Xの上端部には、例えば、第1の油圧シリンダ81の直動ロッドが連結されている。 As shown in FIG. 12, the pressing uneven portion 80 provided in the auxiliary molding die 71 of the present embodiment is a fixed portion 80Z fixed to the upper base 75 and a first moving in the vertical direction relative to the fixed portion 80Z. The first and second pressing portions 80X and 80Y are provided. The lower end portion of the first pressing portion 80X has the same shape as the first pressing portion 76X of the first embodiment, and faces the first molding concave portion 73X provided in the sheet molding die 72. For example, a linear motion rod of the first hydraulic cylinder 81 is connected to the upper end portion of the first pressing portion 80X.
また、第2の押圧部80Yの下端部は、第1実施形態の第2の押圧部76Yと同じ形状をなし、シート成形型72に備えた第2の成形凹部73Yに対向している。この第2の押圧部80Yの上端部には、例えば、第2の油圧シリンダ82の直動ロッドが連結されている。これら第1と第2の油圧シリンダ81,82は、別々のタイミングで駆動されるようになっている。そして、第1及び第2の油圧シリンダ81,82の駆動により、図16に示すように、第1及び第2の押圧部80X,80Yが下端位置まで移動すると、押圧凹凸部80の下面全体が、シート成形型72の凹凸形状を概ね反転させた凹凸形状になる。また、本実施形態では、固定部80Zのうちシート成形型72のエンブレム成形凸部73Aと対向する部分が、本発明に係るガイド部80Aになっている。 Further, the lower end portion of the second pressing portion 80Y has the same shape as the second pressing portion 76Y of the first embodiment, and faces the second forming recess 73Y provided in the sheet forming die 72. For example, a direct acting rod of the second hydraulic cylinder 82 is connected to the upper end of the second pressing portion 80Y. These first and second hydraulic cylinders 81 and 82 are driven at different timings. When the first and second pressing portions 80X and 80Y are moved to the lower end position as shown in FIG. 16 by driving the first and second hydraulic cylinders 81 and 82, the entire lower surface of the pressing uneven portion 80 is moved. The concavo-convex shape of the sheet forming die 72 is generally reversed. Moreover, in this embodiment, the part which opposes the emblem shaping | molding convex part 73A of the sheet | seat shaping | molding die 72 among the fixing | fixed part 80Z is the guide part 80A which concerns on this invention.
本実施形態の金属調装飾部品成形金型70の構成は以上である。この金属調装飾部品成形金型70を用いて金属調成形シート10から金属調装飾部品29を成形する金属調装飾部品29の製造方法について以下説明する。 The configuration of the metallic decorative part molding die 70 of the present embodiment is as described above. A method for manufacturing the metallic decorative component 29 for forming the metallic decorative component 29 from the metallic molded sheet 10 using the metallic decorative component molding die 70 will be described below.
第1実施形態の場合と同様にシート配置工程を行う(図12及び図13参照)。そして押圧凹凸部80のうち第1及び第2の押圧部80X,80Yを固定部80Zより上方に引き上げた状態にして、成形補助型71を降下させ、成形補助型71の囲壁75Aを金属調成形シート10を介してシート成形型72の上面周縁部に当接させる。すると、図14に示すようにガイド部80Aがエンブレム成形凸部73Aとの間にクリアランスCを介した位置に配置される。 The sheet arrangement process is performed in the same manner as in the first embodiment (see FIGS. 12 and 13). Then, the first and second pressing portions 80X and 80Y of the pressing uneven portion 80 are pulled up above the fixed portion 80Z, the forming auxiliary mold 71 is lowered, and the surrounding wall 75A of the forming auxiliary mold 71 is metal-molded. The sheet is brought into contact with the peripheral edge of the upper surface of the sheet forming mold 72 through the sheet 10. Then, as shown in FIG. 14, the guide portion 80A is arranged at a position via the clearance C between the guide portion 80A and the emblem forming convex portion 73A.
この状態でシート押圧工程を行う。本実施形態のシード押圧工程では、先ずは第1の押圧部80Xを降下させる。そして、図15に示すように、第1の押圧部80Xが第1の成形凹部73Xの底面との間にクリアランスCを介して対向する位置まで移動したら第1の押圧部80Xを停止し、次いで、第2の押圧部80Yを降下させる。そして、図16に示すように、第2の押圧部80Yが第2の成形凹部73Yの底面との間にクリアランスCを介して対向する位置まで移動したら第2の押圧部80Yを停止する。 In this state, the sheet pressing step is performed. In the seed pressing step of this embodiment, first, the first pressing portion 80X is lowered. And as shown in FIG. 15, if the 1st press part 80X moves to the position which opposes via the clearance C between the bottom face of the 1st shaping | molding recessed part 73X, the 1st press part 80X will be stopped, and then Then, the second pressing portion 80Y is lowered. And as shown in FIG. 16, if the 2nd press part 80Y moves to the position which opposes via the clearance C between the bottom face of the 2nd shaping | molding recessed part 73Y, the 2nd press part 80Y will be stopped.
このように第2の押圧部80Yにより第2の押圧部80Yが先に金属調成形シート10を押圧することで、金属調装飾部品29の中央部になる部分が先に押圧されてからその外側部分が押圧されることになる。これにより、金属調成形シート10のうち金属調装飾部品29になる部分より外側の最終的に除去される部分が、金属調装飾部品29になる側に効率よく引っ張られて、シート成形型72に備えた複数の凹凸部分に略均等に金属調成形シート10を分配することができる。 In this way, the second pressing portion 80Y first presses the metallic tone forming sheet 10 by the second pressing portion 80Y, so that the portion that becomes the central portion of the metallic tone decorative component 29 is pressed first before the outer side thereof. The part will be pressed. As a result, the part of the metal-like molded sheet 10 that is finally removed outside the part that becomes the metal-like decorative part 29 is efficiently pulled toward the side that becomes the metal-like decorative part 29, and the sheet-forming mold 72 The metal tone molded sheet 10 can be distributed substantially evenly to the plurality of uneven portions provided.
また、ガイド部80Aとシート成形型72におけるエンブレム成形凸部73Aとの間のクリアランスC内に金属調成形シート10が収まっているので、第1及び第2の押圧部80X,80Yが金属調成形シート10を押圧したときに、金属調成形シート10がエンブレム成形凸部73Aから浮き上がることを防止することが可能になる。しかも、金属調成形シート10が伸ばされる際には、クリアランスC内で金属調成形シート10が比較的自由に伸ばされる。これにより、金属調成形シート10をエンブレム成形凸部73A及びその近傍の形状に概ね倣わせて変形させることができる。このようにしてシート押圧工程が終了したら、第1実施形態と同様にシート密着工程を行う(図17参照)。 In addition, since the metal tone forming sheet 10 is contained in the clearance C between the guide portion 80A and the emblem forming convex portion 73A of the sheet forming die 72, the first and second pressing portions 80X and 80Y are metal tone forming. When the sheet 10 is pressed, it is possible to prevent the metallic tone forming sheet 10 from floating from the emblem forming convex portion 73A. In addition, when the metallic tone forming sheet 10 is stretched, the metallic tone forming sheet 10 is stretched relatively freely within the clearance C. Thereby, the metal tone-molded sheet 10 can be deformed substantially following the shape of the emblem-shaped convex portion 73A and the vicinity thereof. When the sheet pressing step is completed in this way, the sheet contact step is performed as in the first embodiment (see FIG. 17).
このように本実施形態の金属調装飾部品29の製造方法及び金属調装飾部品成形金型70によれば、成形補助型71の第1及び第2の押圧部80X,80Yが金属調成形シート10を押圧するタイミングを異ならせたことで、金属調成形シート10のうち比較的変形させ難い部分を先に押圧してから比較的変形させ易い部分を押圧することが可能になり、シート成形型72に備えた複数の凹凸部分に略均等に金属調成形シート10を分配することができる。 As described above, according to the manufacturing method of the metallic decorative component 29 and the metallic decorative component molding die 70 of the present embodiment, the first and second pressing portions 80X and 80Y of the auxiliary molding die 71 are the metallic molded sheet 10. By making the timing of pressing different, it becomes possible to press the portion that is relatively difficult to deform first in the metal tone molded sheet 10 and then press the portion that is relatively easy to deform. The metal tone-formed sheet 10 can be distributed substantially evenly to the plurality of uneven portions provided in the above.
[他の実施形態]
本発明は、前記実施形態に限定されるものではなく、例えば、以下に説明するような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.
(1)前記第1実施形態の金属調装飾部品成形金型70は、成形補助型71がシート成形型72に対して降下する構成になっていたが、シート成形型72が成形補助型71に対して上昇する構成としてもよい。この場合、金属調成形シート10を保持したクランプ77,77を一定位置に維持しておき、シート成形型72の上昇過程で、金属調成形シート10がシート成形型72の上面に押し付けられるようにしてもよい。 (1) The metallic decorative part molding die 70 according to the first embodiment has a configuration in which the molding auxiliary mold 71 is lowered with respect to the sheet molding mold 72, but the sheet molding mold 72 is changed to the molding auxiliary mold 71. It is good also as a structure which raises with respect to it. In this case, the clamps 77 and 77 holding the metal-forming sheet 10 are maintained at fixed positions so that the metal-forming sheet 10 is pressed against the upper surface of the sheet-forming mold 72 in the ascending process of the sheet-forming mold 72. May be.
(2)また、前記第1実施形態では、成形補助型71を上側、シート成形型72を下側に配置していたが、その逆に、成形補助型71を下側、シート成形型72を上側に配置してもよい。さらに、成形補助型71とシート成形型72とが水平方向で対向するように配置してもよい。 (2) In the first embodiment, the forming auxiliary mold 71 is disposed on the upper side and the sheet forming mold 72 is disposed on the lower side. Conversely, the forming auxiliary mold 71 is disposed on the lower side and the sheet forming mold 72 is disposed on the lower side. It may be arranged on the upper side. Furthermore, you may arrange | position so that the shaping | molding auxiliary die 71 and the sheet | seat shaping die 72 may oppose in a horizontal direction.
(3)前記第1実施形態の成形補助型71における押圧凹凸部76は、オレフィン系又はウレタン系の合成ゴム製であったが、成形補助型71の押圧凹凸部76をアルミ又は鉄で形成し、その表面に例えば#1000以上の表面磨きを施した構成にしてもよい。この構成によっても、成形補助型71が金属調成形シート10に当接したときに金属調成形シート10に傷が発生することを防ぐことができる。また、押圧凹凸部76をアルミ又は鉄で形成した場合は、その押圧凹凸部76の温度は50〜90度に設定し、金属調成形シート10から押圧凹凸部76に熱が逃げることを防ぐことが好ましい。 (3) The pressing uneven portion 76 in the auxiliary molding die 71 of the first embodiment is made of an olefin-based or urethane-based synthetic rubber, but the pressing uneven portion 76 of the auxiliary forming die 71 is made of aluminum or iron. For example, the surface may be polished by # 1000 or more. Also with this configuration, it is possible to prevent the metal tone forming sheet 10 from being damaged when the forming auxiliary die 71 contacts the metal tone forming sheet 10. Moreover, when the press uneven | corrugated | grooved part 76 is formed with aluminum or iron, the temperature of the press uneven | corrugated part 76 is set to 50-90 degree | times, and it prevents that heat escapes from the metal tone-forming sheet 10 to the press uneven | corrugated part 76. Is preferred.
(4)前記第1及び第2実施形態の金属調成形シート10は、表面にマスキングフィルム23を備えていたが、マスキングフィルム23を有しない金属調成形シート10で金属調装飾部品29を成形してもよい。 (4) Although the metal tone molded sheet 10 of the first and second embodiments has the masking film 23 on the surface, the metal tone decorative component 29 is molded with the metal tone molded sheet 10 that does not have the masking film 23. May be.
(5)前記第1及び第2実施形態の製造方法におけるシート密着工程では、金属調成形シート10とシート成形型72との間のガスを吸引しつつ、圧縮ガス充填空間70Lに圧縮ガスをチャージしていたが、圧縮ガスのチャージを行わずに、ガスの吸引だけで金属調成形シート10をシート成形型72に密着させてもよい。 (5) In the sheet contact step in the manufacturing methods of the first and second embodiments, the compressed gas is charged into the compressed gas filling space 70L while sucking the gas between the metal-formed sheet 10 and the sheet mold 72. However, the metal-molded sheet 10 may be brought into close contact with the sheet forming die 72 only by gas suction without charging the compressed gas.
10 金属調成形シート
11,14 熱可塑性樹脂層
13 金属層
29 金属調装飾部品
50 ホイール部品
70 金属調装飾部品成形金型
70L 圧縮ガス充填空間
71 成形補助型
72 シート成形型
73 成形凹凸部
73A エンブレム成形凸部
73B リング成形凸部
73C,74C ガス排出孔(ガス吸引部)
75A 囲壁
75C ガスチャージ孔(ガスチャージ部)
76X,80X 第1の押圧部
76Y,80Y 第2の押圧部
78 吸引ポンプ(ガス吸引部)
78P パイプ(ガス吸引部)
80A ガイド部
C クリアランス
DESCRIPTION OF SYMBOLS 10 Metal-like molded sheet 11,14 Thermoplastic resin layer 13 Metal layer 29 Metal-like decorative part 50 Wheel part 70 Metal-like decorative part molding die 70L Compressed gas filling space 71 Molding auxiliary mold 72 Sheet molding die 73 Molding uneven part 73A Emblem Molding convex part 73B Ring molding convex part 73C, 74C Gas discharge hole (gas suction part)
75A Enclosure 75C Gas charge hole (gas charge part)
76X, 80X 1st press part 76Y, 80Y 2nd press part 78 Suction pump (gas suction part)
78P pipe (gas suction part)
80A Guide part C Clearance
Claims (21)
前記シート成形型(72)に前記金属調成形シート(10)を対向配置するシート配置工程と、
成形補助型(71)により前記金属調成形シート(10)の一部を前記シート成形型(72)に向けて押圧し、前記金属調成形シート(10)を前記シート成形型(72)の凹凸形状に概ね倣って変形させるシート押圧工程と、
前記金属調成形シート(10)を前記シート成形型(72)の凹凸形状に概ね倣って変形させた状態で、それら金属調成形シート(10)と前記シート成形型(72)との間のガスを吸引して前記金属調成形シート(10)を前記シート成形型(72)に密着させるシート密着工程とを行うことを特徴とする金属調装飾部品(29)の製造方法。 A metal-like molded sheet (10) comprising a plurality of laminated thermoplastic resin layers (11, 14) and a metal layer (13) is brought into close contact with a heated sheet molding die (72) to form a three-dimensional structure. In the method for producing a metal-like decorative part (29) to be molded into the metal-like decorative part (29),
A sheet disposing step of opposingly disposing the metal-molded sheet (10) on the sheet mold (72);
A part of the metal-molded sheet (10) is pressed toward the sheet-molding mold (72) by the molding auxiliary mold (71), and the metal-molded sheet (10) is uneven in the sheet-molding mold (72). A sheet pressing step for deforming generally following the shape;
The gas between the metal-formed sheet (10) and the sheet-forming mold (72) in a state in which the metal-formed sheet (10) is deformed substantially following the uneven shape of the sheet-forming mold (72). A method for producing a metallic decorative component (29), wherein a sheet adhering step of sucking the metal-adjusted sheet (10) into close contact with the sheet forming die (72) is performed.
t+0.2[mm]≦C≦t+1.0[mm]
、であることを特徴とする請求項5に記載の金属調装飾部品(29)の製造方法。 When the thickness of the metal-like molded sheet (10) is t and the clearance is C,
t + 0.2 [mm] ≦ C ≦ t + 1.0 [mm]
The method for producing a metallic decorative part (29) according to claim 5, characterized in that:
前記金属調装飾部品(29)を形取ったシート成形型(72)と、
前記シート成形型(72)に敷設された状態の前記金属調成形シート(10)の一部を前記シート成形型(72)に向けて押圧し、前記金属調成形シート(10)を前記シート成形型(72)の凹凸形状に概ね倣って変形させるための成形補助型(71)と、
前記金属調成形シート(10)を前記シート成形型(72)の凹凸形状に概ね倣って変形させた状態で、それら金属調成形シート(10)とシート成形型(72)との間のガスを吸引するガス吸引部(73C,74C,78,78P)とを備えたことを特徴とする金属調装飾部品成形金型(70)。 Metal for molding a metal-like molded sheet (10) comprising a plurality of thermoplastic resin layers (11, 14) and a metal layer (13) laminated into a three-dimensional metal-like decorative part (29) In the decorative part molding die (70),
A sheet molding die (72) shaped from the metallic decorative part (29);
A part of the metallic tone forming sheet (10) laid on the sheet forming die (72) is pressed toward the sheet forming die (72), and the metallic tone forming sheet (10) is formed into the sheet. A molding auxiliary mold (71) for generally following and deforming the concave-convex shape of the mold (72);
In a state where the metal-like shaped sheet (10) is deformed substantially following the uneven shape of the sheet-shaped mold (72), the gas between the metal-like shaped sheet (10) and the sheet-shaped mold (72) is discharged. A metallic decorative part molding die (70), comprising a gas suction part (73C, 74C, 78, 78P) for suctioning.
t+0.2[mm]≦C≦t+1.0[mm]
、であることを特徴とする請求項17に記載の金属調装飾部品成形金型(70)。 When the thickness of the metal-like molded sheet (10) is t and the clearance is C,
t + 0.2 [mm] ≦ C ≦ t + 1.0 [mm]
18. Metallic decorative part molding die (70) according to claim 17, characterized in that
前記ガス吸引部(73C,74C,78,78P)がガスを吸引したときに、前記圧縮ガス充填空間(70L)に圧縮ガスを供給するためのガス供給部(75C)とを備えたことを特徴とする請求項13乃至20の何れかに記載の金属調装飾部品成形金型(70)。 Surrounding a portion of the forming auxiliary mold (71) and the sheet forming mold (72) where the metallic decorative part (29) is formed and between the forming auxiliary mold (71) and the sheet forming mold (72). A surrounding wall (75A) for forming a sealed compressed gas filling space (70L);
A gas supply unit (75C) for supplying compressed gas to the compressed gas filling space (70L) when the gas suction unit (73C, 74C, 78, 78P) sucks gas. 21. A metallic decorative part molding die (70) according to any one of claims 13 to 20.
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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LAPS | Cancellation because of no payment of annual fees |