JP7005081B1 - 接合体及び接合体の製造方法 - Google Patents
接合体及び接合体の製造方法 Download PDFInfo
- Publication number
- JP7005081B1 JP7005081B1 JP2021529353A JP2021529353A JP7005081B1 JP 7005081 B1 JP7005081 B1 JP 7005081B1 JP 2021529353 A JP2021529353 A JP 2021529353A JP 2021529353 A JP2021529353 A JP 2021529353A JP 7005081 B1 JP7005081 B1 JP 7005081B1
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- JP
- Japan
- Prior art keywords
- joint surface
- metal
- protrusions
- synthetic resin
- bonded body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/26—Alloys of Nickel and Cobalt and Chromium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
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Abstract
Description
以下、本発明の第1実施形態について図面を参照して説明する。なお、図面では、説明のために部材の大きさなどが誇張されて書かれている場合がある。
まず、本実施形態の接合体10について説明する。この接合体10は、図1に示すように、金属からなる第1部材(以下、「金属部材」ということがもある)30と、熱可塑性樹脂からなる第2部材(以下、「合成樹脂部材」ということもある)20とを備える。金属部材30はその表面にアンカ部34が形成された第1接合面(以下、「金属接合面」ということがある)32を有している。合成樹脂部材20はその表面に第2接合面(以下、「樹脂接合面」ということがある)22を有している。接合体10は、金属接合面32に樹脂接合面22を接合して金属部材30及び合成樹脂部材20を一体化したものである。
合成樹脂部材20は、熱可塑性樹脂をブロック状、板状、又は線状等の所定形状に成形した部材である。また、合成樹脂部材20は、熱可塑性樹脂の塗膜や、熱可塑性樹脂製の接着剤からなる接着層であってもよい。合成樹脂部材20を構成する熱可塑性樹脂として、具体例を挙げると、ポリプロピレン樹脂(PP樹脂)、ポリアセタール樹脂(POM樹脂)、ポリフェニレンサルファイド樹脂(PPS樹脂)、ポリエーテルエーテルケトン樹脂(PEEK)、アクリロニトリル/ブタジエン/スチレン樹脂(ABS樹脂)、ポリエチレン樹脂(PE樹脂)、ポリブチレンテレフタレート樹脂(PBT樹脂)、ナイロン66等(PA66)のポリアミド樹脂(PA樹脂)、エポキシ樹脂、液晶ポリマー(LCP樹脂)、変性ポリフェニレンエーテル樹脂(変性PPE)、リアクター型軟質ポリプロピレン系樹脂(メタロセン系リアクター型TPO樹脂)、ペルフルオロアルコキシフッ素樹脂(PFA)、エチレン・四フッ化エチレン共重合体(ETFE)などである。また、合成樹脂部材20は、上記のような熱可塑性樹脂に炭素繊維が配合された炭素繊維強化熱可塑性樹脂(CFRTP)や、上記のような熱可塑性樹脂にガラス繊維、タルクなどの補強材や難燃化材や劣化防止剤やエラストマー成分などが配合されたものでもよい。
金属部材30は、金属をブロック状、板状、又は線状等の所定形状に成形した部材である。金属部材30を構成する金属としては、特に限定されず種々の金属を用いることができる。例えば、金属部材30を構成する金属として銅(Cu)、鉄(Fe)、アルミニウム(Al)、チタン(Ti)、ニッケル(Ni)、クロム(Cr)等を用いることができる。また、金属部材30は、銅合金、鉄合金(鉄鋼材)、アルミニウム合金、ステンレス、チタン合金、ニッケル合金、クロム合金等の2種以上の金属からなる合金から構成されてもよい。
金属接合面32に形成されたアンカ部34は、図2~図3に示すように、金属接合面32から突出する突起35を複数備える。複数の突起35は、所定方向(以下、この方向を第1方向という)Xに沿って並んで設けられている。
次に、接合体10の製造方法について説明する。
アンカ形成工程では、金属部材30のうち合成樹脂部材20が接合される金属接合面32に、下記式(1)で表される係数Rが0.1以上1.0以下を満たすパルス状のレーザ光を第1方向Xへ移動(走査)させながら照射することが好ましい。
接合工程では、金属部材30及び合成樹脂部材20を加熱することで、合成樹脂部材20の樹脂接合面22側を軟化させる軟化工程を実行する。その後、樹脂接合面22を複数の突起35に接触させながら合成樹脂部材20を金属部材30へ加圧することで、複数の突起35を合成樹脂部材20に入り込ませて金属接合面32を樹脂接合面22に加圧しながら接触させる加圧工程を実行する。これにより、金属接合面32に樹脂接合面22が接合された接合体10が得られる。本実施形態では、図5及び図6に示すような接合装置50を用いて軟化工程及び加圧工程を行い、接合体10を製造する。
2(R-COOH)+MeO=2(R-COO)-Me+H2O↑・・・(2)
なお、式(2)中、Rは合成樹脂部材20を構成する熱可塑性樹脂の主鎖、Meは金属部材30を構成する金属である。
本実施形態の接合体10では、アンカ部34を構成する複数の突起35の第2方向Yの両側にアンダーカット部35cが設けられているため、合成樹脂部材20と金属部材30との接合強度を高めることができる。
次に本発明の第2実施形態について図7及び図8に参照して説明する。なお、第1実施形態と同一の構成のものについては同一の符号を付し、その構成の説明を省略する。
本発明は上記した実施形態に限定されない。上記の各実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。
以下、本発明の実施例及び比較例1,2を説明する。なお、本発明は、実施例に限定されるものではない。
・合成樹脂部材:サスティール(登録商標)SGX120
・金属部材の寸法:18mm×45mm×1.6mm
・合成樹脂部材の寸法:10mm×40mm×3.0mm
・金属部材と合成樹脂部材との接合面積:10mm×5mm
評価方法は次の通りである。
金属接合面にアンカ部を形成した実施例及び比較例1,2の金属部材について、合成樹脂部材を接合していない状態でアンカ部のSEM観察を行った。図9~図11は、実施例の金属部材の平面図及び断面図を示し、図9において符号Xは第1方向を示し、レーザ光を走査した方向、符号Yは第2方向を示す。
JIS K 6850に規定された試験方法のうち、金属部材の寸法、合成樹脂部材の寸法、合成樹脂部材と金属部材との接合面積を上記の通りに変更し、その他の条件を同規格に準じて、引張試験機(島津製作所、オートグラフ AGX-V)を用い、引張速度10mm/min、測定温度25℃で測定した。なお、実施例及び比較例1,2の試験片をそれぞれ4個ずつ作製し、4個の測定値の平均値をそれぞれの接合強度とした。
Claims (11)
- アンカ部が設けられた第1接合面を有する第1部材と、第2接合面を有する第2部材とを備え、前記第1接合面に前記第2接合面を接合した接合体において、
前記アンカ部は、前記第1接合面から突出し、第1方向に沿って並んで設けられた複数の突起を備え、
前記複数の突起は、
前記第1接合面から突出し前記第1方向に沿って延びる凸条部と、前記凸条部の上部に設けられ前記凸条部より前記第1方向に垂直な方向である第2方向へ広がった膨張部と、前記凸条部の前記第2方向の両側に設けられたアンダーカット部を有し、
頂部を含む前記第1方向に沿った断面形状が、前記第1接合面側において前記第1方向に沿った長さが最も長くなるように、前記第1接合面に近づくほど前記第1方向に広がる形状をなしている接合体。 - 前記第1方向に隣接する前記複数の突起の前記凸条部が繋がっている請求項1に記載の接合体。
- 前記複数の突起の頂部を含む前記第1方向に沿った断面が、頂部から前記第1接合面に近づくほど前記第1方向の長さが長くなる形状をなしている請求項1又は2に記載の接合体。
- 前記第2部材は前記第2接合面に前記第1方向に沿って延びる溝を備え、前記溝に前記複数の突起が嵌まっている請求項1~3のいずれか1項に記載の接合体。
- 前記溝に充填された第3部材を備える請求項4に記載の接合体。
- 前記第1部材が、前記第2部材より硬度が高い請求項1~5のいずれか1項に記載の接合体。
- 前記アンカ部の表面に金属酸化物が設けられている請求項1~6のいずれか1項に記載の接合体。
- アンカ部が設けられた第1部材の第1接合面に第2部材の第2接合面を接合した接合体の製造方法において、
前記第1接合面から突出し、複数の突起を有する前記アンカ部を形成するアンカ形成工程と、
前記アンカ形成工程後、前記第2部材を前記複数の突起に接触させながら加圧して、前記複数の突起を前記第2部材に入り込ませて前記第1接合面を前記第2接合面に接触させる接合工程とを備え、
前記アンカ形成工程は、前記第1接合面に対してパルスレーザ光を第1方向へ走査しながら照射することで、前記第1方向に垂直な方向である第2方向の両側にアンダーカット部を有し、頂部を含む前記第1方向に沿った断面形状が、前記第1接合面側において前記第1方向に沿った長さが最も長くなるように、前記第1接合面に近づくほど前記第1方向に広がる形状をなしている複数の突起を、前記第1方向に沿って並べて設ける接合体の製造方法。 - 前記接合工程が、前記第2部材の前記第2接合面側を軟化させる軟化工程を備える請求項8に記載の接合体の製造方法。
- 前記第2接合面に前記第1方向に沿って延びる溝を形成する溝形成工程を備え、
前記接合工程において前記溝に前記複数の突起を嵌める請求項8に記載の接合体の製造方法。 - 前記溝形成工程が、前記溝に第3部材を充填する工程を備え、前記接合工程が、前記第3部材を軟化させる軟化工程を備える請求項10に記載の接合体の製造方法。
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