JP5481049B2 - レーザを用いた部材の接合方法 - Google Patents
レーザを用いた部材の接合方法 Download PDFInfo
- Publication number
- JP5481049B2 JP5481049B2 JP2008231679A JP2008231679A JP5481049B2 JP 5481049 B2 JP5481049 B2 JP 5481049B2 JP 2008231679 A JP2008231679 A JP 2008231679A JP 2008231679 A JP2008231679 A JP 2008231679A JP 5481049 B2 JP5481049 B2 JP 5481049B2
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- laser
- laser beam
- boundary surface
- joining
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- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0026—Transparent
- B29K2995/0027—Transparent for light outside the visible spectrum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
長谷川達也,他,「レーザによる熱可塑性プラスチックのラップ接合」,日本機械学会論文集(C編),日本機械学会発行,2001年9月,第67巻,第611号,pp.2997−3001
以上
Claims (3)
- 波長が800〜1200nmのレーザ光を透過する同種あるいは異種の熱可塑性樹脂材料で形成された3つ以上の部材を互いに密着状態で重ね合わせて、該3つ以上の部材に該レーザ光を照射することにより該3つ以上の部材間を接合させる接合方法であって、前記密着状態は、接合強度が飽和する所定の押え圧以上をかけることにより維持されており、前記3つ以上の部材がそれぞれ接触する境界面の少なくとも一方が、予め該レーザ光を吸収可能なように凹凸状態にされており、該レーザ光の照射により、該境界面における該レーザ光の吸収によって両部材をそれぞれ溶融あるいは軟化させることによって各部材間を接合させると共に、該接合部分を該レーザ光を透過させる状態に変化させ、該接合部分を透過したレーザ光により、次の境界面においても両部材間を接合させると共に、該接合部分を該レーザ光を透過させる状態に変化させ、以降これを繰り返すことにより、一回のレーザ光照射によって該3つ以上の部材の各境界面に接合を形成させることを特徴とするレーザを用いた部材の接合方法。
- 前記接合部分を全て透過した、あるいは接合形成が不十分なことにより十分に透過してこないレーザ光を光検知手段によって検知することにより、前記3つ以上の部材間の接合が形成されたか否か、及びその過程を認識できるようにしたことを特徴とする請求項1に記載のレーザを用いた部材の接合方法。
- 前記3つ以上の部材がそれぞれ接触する前記境界面における、前記レーザ光に対する部材固有の透過率及び部材固有の熱物性値である密度、比熱、熱伝導率に応じて、該境界面の凹凸状態で決まる該レーザ光の吸収率と、該レーザ光の該境界面におけるレーザ強度と、該レーザ光の照射時間との組み合わせの制御により、適正な接合形成を可能にしたことを特徴とする請求項1又は2に記載のレーザを用いた部材の接合方法。
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