JP2002331588A - レーザ溶着方法 - Google Patents
レーザ溶着方法Info
- Publication number
- JP2002331588A JP2002331588A JP2001142236A JP2001142236A JP2002331588A JP 2002331588 A JP2002331588 A JP 2002331588A JP 2001142236 A JP2001142236 A JP 2001142236A JP 2001142236 A JP2001142236 A JP 2001142236A JP 2002331588 A JP2002331588 A JP 2002331588A
- Authority
- JP
- Japan
- Prior art keywords
- laser
- laser beam
- resin member
- resin
- laser light
- 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.)
- Granted
Links
Classifications
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1629—Laser beams characterised by the way of heating the interface
- B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1629—Laser beams characterised by the way of heating the interface
- B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1629—Laser beams characterised by the way of heating the interface
- B29C65/1664—Laser beams characterised by the way of heating the interface making use of several radiators
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1629—Laser beams characterised by the way of heating the interface
- B29C65/1664—Laser beams characterised by the way of heating the interface making use of several radiators
- B29C65/1667—Laser beams characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous laser welding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1677—Laser beams making use of an absorber or impact modifier
-
- 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- 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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
-
- 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
- B29C66/7392—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 thermoplastic
- B29C66/73921—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 thermoplastic characterised by the materials of both parts being thermoplastics
-
- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
- B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
- B29C65/1622—Far infrared radiation [FIR], e.g. by FIR lasers
-
- 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
- B29C66/71—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 composition of the plastics material of the parts to be joined
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Laser Beam Processing (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
に焼けや溶融等の不具合が生ずることがなく、溶着時間
の短縮も可能なレーザ溶着方法を提供する。 【解決手段】 レーザ光透過性樹脂部材1と、レーザ光
吸収性樹脂部材2とを重ね合わせ、レーザ光透過性樹脂
部材を通して接合部にレーザ光3を照射し、該接合部を
溶融せしめて両樹脂部材を相互に溶着する際に、前記レ
ーザ光を、2方向またはそれ以上の多方向から該接合部
に集光されるように照射してレーザ溶着を行う。
Description
て、透過側の樹脂表面に悪影響を与えることなく、短時
間で樹脂部材同士を接合するレーザ溶着方法に関する。
を利用して樹脂部材同士の接着を行う方法が、特開昭6
2−62734号公報、特開昭62−74630号公
報、特開昭62−74631号公報または特公平5−4
2336号公報等に提案されている。
樹脂部材とレーザ光の吸収率が高い樹脂部材とを重ね合
わせ、この重ね合わせ(接合)部分にレーザ光を透過す
る樹脂部材の側から照射し、レーザ光を吸収する樹脂部
材の一部を溶融せしめることで樹脂部材同士を接合する
ものである。また、前記特公平5−42336号公報で
は、樹脂部材を加熱する代わりに樹脂部材間に介在せし
めた接着剤をレーザ光で加熱することで樹脂部材同士を
接合する方法も提案されている。
ってレーザ溶着を行う場合、生産効率を上げるためにレ
ーザ出力を高くすると、レーザ光透過性樹脂部材の表面
に焼けや溶融等の不具合が生じて製品の品質低下を招
く。その理由は、レーザ光透過性が高い樹脂であっても
僅かにレーザ光を吸収するため、レーザ密度が高いとエ
ネルギー吸収量が増加するためである。
ても、レーザ光は、透過性樹脂部材に入射するまでの空
中通過時の吸収や拡散、透過性樹脂部材表面での反射、
透過性樹脂部材中への吸収や拡散、吸収性樹脂表面での
反射等により減衰されるため、部材が厚い場合等には溶
着に必要なエネルギーが十分に得られない場合がある。
この場合にもレーザ出力を上げざるを得ないため、やは
りレーザ光透過性樹脂部材の表面に焼けや溶融等の不具
合が生じる。
のレーザを照射しても樹脂部材に焼けや溶融等の不具合
が生ずることがなく、溶着時間の短縮も可能なレーザ溶
着方法を提供することを目的とする。
着方法は、レーザ光透過性樹脂部材と、レーザ光吸収性
樹脂部材とを重ね合わせ、レーザ光透過性樹脂部材を通
して接合部にレーザ光を照射し、該接合部を溶融せしめ
て両樹脂部材を相互に溶着する方法であって、前記レー
ザ光を、2方向またはそれ以上の多方向から該接合部に
集光されるように照射する。前記2方向またはそれ以上
の多方向から照射されるレーザ光は、レーザ光同士が相
互に重ならない状態でレーザ光透過性樹脂部材へ入射さ
れることが好ましい。
図面に基づいて説明する。図1は本発明のレーザ溶着方
法の一例を示す斜視図、図2は断面図である。図に示す
ように、レーザ光透過性樹脂部材1とレーザ光吸収性樹
脂部材2とが重ね合わされ、2方向からのレーザ光3a
および3bが互いに重ならない状態で、レーザ光透過性
樹脂部材1の表面に入射されている。なおレーザ光3a
および3bは、図示されない凸レンズでそれぞれ接合面
4に集光するようにコントロールされている。
部材1へのレーザの入射エネルギー密度は、従来の1箇
所からの入射エネルギー(W)の密度の半分で済む。つ
まりレーザ光3aおよび3bの入射エネルギーをそれぞ
れW/2に減らしても、接合面4に集光されたときのエ
ネルギー量は、従来の1箇所からの入射の場合と変わら
ないため良好な溶着を行うことができる。
射と同じ量のレーザ光を2箇所から入射すれば2Wのエ
ネルギー量を接合面4に供給することができるため、短
時間で溶着を終了することができる。
特にないが、半導体レーザ、YAGレーザを光源とした
遠近赤外領域、可視光領域等各種波長のものを使用する
ことができる。またレーザ光は複数の光源を使用する
か、または単一光源のレーザ光を光ファイバで複数に分
岐して使用することができる。
としては、使用するレーザ光3a、3bの波長領域にお
けるレーザ光吸収率が低いものほど好ましく、ポリエチ
レンテレフタレート(PET)、ポリブチレンテレフタ
レート等のポリエステル樹脂、ポリエチレン、ポリプロ
ピレン等のポリオレフィン樹脂、ポリアミド樹脂、塩化
ビニル樹脂、フッ素樹脂等から適宜選択することができ
る。また、上記各種樹脂中に、レーザ光を吸収しない
か、または吸収しにくい、例えばガラス繊維、ナイロン
繊維等の強化材を添加した繊維強化樹脂も好ましく使用
することができる。
は、使用するレーザ光3a、3bの波長領域におけるレ
ーザ光吸収率が高い官能基を有する樹脂を使用すること
もできるが、溶着時におけるレーザ光透過性樹脂部材1
との接着性を考慮すると、できるだけ使用するレーザ光
透過性樹脂部材1と同じ組成の樹脂あるいは組成が異な
っていても相溶性の高い樹脂を採用することが好まし
い。したがって、レーザ光吸収性樹脂部材2としては、
上述の各樹脂に、レーザ光3a、3bの波長領域におけ
るレーザ光吸収率が高い添加物、たとえばカーボンブラ
ック他の各種着色顔料を配合したものを使用することが
好ましい。
性樹脂部材2とは十分に位置合わせを行った後になるべ
く隙間がないように加圧・密着させて固定する。両部材
の固定方法としては、ガラス板等のレーザ光透過性材料
で両部材を挟む方法、レーザ光透過性の袋状樹脂シート
に両部材を入れ、袋内を抜気して固定する方法等があ
る。
しては、例えばレーザヘッド(図示せず)を配置し、N
C制御により3次元空間で自由に移動させることができ
ることが好ましい。レーザ光3a、3bは、レーザヘッ
ドの移動により、図の手前側から奥行き方向(紙面垂直
方法)に向かって順次レーザ光吸収性樹脂部材2の接合
部4を溶融してゆく。
レーザ光を2方向またはそれ以上の多方向から該接合部
に集光されるように照射するため、接合部に集光された
際には比較的高出力となるレーザ光を照射しても、それ
ぞれのレーザ光の出力が低いため樹脂部材に焼けや溶融
等の不具合が生ずることがない。また、このような不具
合が生ずることがないため、接合部には従来よりも強い
レーザ光を集光させることができ、その結果、溶着時間
を短縮することもできる。
をレーザ光で迅速に溶着させることができ、樹脂の損傷
もないため、例えばインストルメントパネル等の自動車
部品、電池ケース等の電気・電子部品を好適に製造でき
る。
部材、3a、3b…レーザ光、4…接合面。
Claims (2)
- 【請求項1】 レーザ光透過性樹脂部材と、レーザ光吸
収性樹脂部材とを重ね合わせ、レーザ光透過性樹脂部材
を通して接合部にレーザ光を照射し、該接合部を溶融せ
しめて両樹脂部材を相互に溶着する方法であって、前記
レーザ光を、2方向またはそれ以上の多方向から該接合
部に集光されるように照射することを特徴とするレーザ
溶着方法。 - 【請求項2】 請求項1に記載のレーザ溶着方法におい
て、前記2方向またはそれ以上の多方向から照射される
レーザ光は、レーザ光同士が相互に重ならない状態でレ
ーザ光透過性樹脂部材へ入射されることを特徴とするレ
ーザ溶着方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001142236A JP4731040B2 (ja) | 2001-05-11 | 2001-05-11 | レーザ溶着方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001142236A JP4731040B2 (ja) | 2001-05-11 | 2001-05-11 | レーザ溶着方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2002331588A true JP2002331588A (ja) | 2002-11-19 |
JP4731040B2 JP4731040B2 (ja) | 2011-07-20 |
Family
ID=18988576
Family Applications (1)
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JP2005231308A (ja) * | 2004-02-23 | 2005-09-02 | Denso Corp | 樹脂材のレーザ溶着方法 |
JP2006512221A (ja) * | 2002-12-27 | 2006-04-13 | ラーザークイップメント アーゲー | 熱可塑性プラスチック成形品を溶接、特に3次元成形品を輪郭溶接するための方法と装置 |
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JP2007182003A (ja) * | 2006-01-10 | 2007-07-19 | Stanley Electric Co Ltd | 樹脂材のレーザー溶着方法 |
JP2009255163A (ja) * | 2008-03-28 | 2009-11-05 | Sumitomo Electric Ind Ltd | レーザ加工方法 |
JP2009291039A (ja) * | 2008-05-30 | 2009-12-10 | Canon Inc | 電磁駆動装置及び製造方法 |
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