JP2002337236A - 樹脂部材の溶着方法 - Google Patents
樹脂部材の溶着方法Info
- Publication number
- JP2002337236A JP2002337236A JP2001142891A JP2001142891A JP2002337236A JP 2002337236 A JP2002337236 A JP 2002337236A JP 2001142891 A JP2001142891 A JP 2001142891A JP 2001142891 A JP2001142891 A JP 2001142891A JP 2002337236 A JP2002337236 A JP 2002337236A
- Authority
- JP
- Japan
- Prior art keywords
- resin member
- laser beam
- rib
- members
- 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.)
- Pending
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
- 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
- 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
- B29C65/1677—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
- 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
- B29C65/1687—Laser beams making use of light guides
-
- 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
- B29C65/1687—Laser beams making use of light guides
- B29C65/169—Laser beams making use of light guides being a part of the joined article
-
- 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
-
- 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
- B29C66/114—Single butt 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
- B29C66/70—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
-
- 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with 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
- 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
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
-
- 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
-
- 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
- B29C66/90—Measuring or controlling the joining process
- B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
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- 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
部材と非樹脂部材との溶着状況を溶着時にリアルタイム
に把握し管理することができ、後検査を不要とした溶着
方法を提供する。 【解決手段】 レーザ光透過性部材と、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
部材を相互に溶着する際に、少なくとも両部材間の前記
接合部となる部分のいずれか一方にリブを設け、このリ
ブが潰れない程度の力で両部材を加圧してリブが挿入さ
れた両部材の高さを測定しておき、次にレーザ光をレー
ザ光透過性部材側からリブを透過してレーザ光吸収性樹
脂部材に入射させ、前記接合部を溶融させてリブをレー
ザ光吸収性樹脂部材に溶け込ませ、このときのリブの高
さの減少量から溶着状態を管理する。
Description
樹脂部材同士、或いは樹脂部材以外の部材を接合する方
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、特公平5
−42336号公報、特開昭62−74630号公報、
特開昭62−74631号公報等に提案されている。こ
れらの方法はいずれも、レーザ光の透過率が高い樹脂部
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、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。
樹脂部材同士の接合状態を把握する手段についての開示
がない。即ち、溶着による樹脂部材同士の接合状況が良
好であるかどうかを検査する直接的な手段がないため、
実際には一定の加圧力による接合保証をしている。した
がって、例えばレーザ出力の低下や、焦点位置、加工位
置のずれが生じた場合には接合不良を検出することがで
きないため、後検査によって不良品を見つける必要があ
った。しかし後検査は、引っ張り試験や水槽内への浸漬
による確認試験等、手間の掛かるものであり、これらの
検査工程が製品のコストアップに繋がっている。
材同士あるいは樹脂部材と非樹脂部材との溶着状況を、
溶着時にリアルタイムに把握し、管理することができる
ため、後検査を必要としない樹脂部材の溶着方法を提供
することである。
め、本発明の樹脂部材の溶着方法は、レーザ光透過性部
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部材を相互に溶着する方法であっ
て、少なくとも両部材間の前記接合部となる部分のいず
れか一方にリブを設け、このリブが潰れない程度の力で
両部材を加圧してリブを挟む両部材の高さを測定してお
き、次にレーザ光をレーザ光透過性部材側からリブを透
過してレーザ光吸収性樹脂部材に照射し、前記接合部を
溶融させてリブをレーザ光吸収性樹脂部材に溶け込ま
せ、このときの前記リブの高さの減少量から溶着状態を
管理する。
ーンにほぼ合わせ、レーザ光吸収性樹脂部材に近づくほ
ど狭くなるよう、角度を設けて形成されていることが好
ましい。
図面に基づいて説明する。図1は本発明のリブ付き樹脂
部材を使用して樹脂部材同士を溶着する方法の一例を示
す断面図である。
けられていて、レーザ光吸収性樹脂部材3がレーザ光透
過性樹脂部材1とリブ2を介して重ね合わされている。
レーザ光4は凸レンズ5によって集光され、レーザ光透
過性樹脂部材1およびリブ2を順次透過してリブ2とレ
ーザ光吸収性樹脂部材3とが接触する接合部6に照射さ
れている。
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、レーザ光透過性樹脂部材1を構成する樹脂
としては、使用するレーザ光4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。さら
に、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4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。この観
点から、レーザ光吸収性樹脂部材3としては、上述の各
樹脂に、レーザ光4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。
は、奥行き方向(紙面垂直方向)に同じ高さで延長され
ている。図示例ではリブ2はレーザ光透過性樹脂部材1
とともに一体成型されているため、レーザ光透過性樹脂
部材1と同じ材料でできている。リブ2はレーザ光吸収
性樹脂部材3と一体成形することもできる。
説明する。先ずレーザ光透過性樹脂部材1のリブ2を内
側に向けて、レーザ光吸収性樹脂部材3と対峙させる。
次に、レーザ光透過性樹脂部材1のリブ2部分と、レー
ザ光吸収性樹脂部材3の溶着させたい部位とを位置合わ
せし(ここが接合部となる)、両部材を固定する。
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。
材をプレスにセットし、リブ2が潰れない程度に加圧し
てそのときの高さを測定しておく。即ち、このときの高
さは両部材の高さとリブ2の高さとを合計したものであ
る。
れ、レーザ光透過性樹脂部材およびリブ2を順次透過し
てレーザ光吸収性樹脂部材3に入射される。レーザ光照
射設備としては、例えばレーザヘッド(図示せず)を配
置し、NC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4は、レーザヘッ
ドの移動により、本図の手前側から奥行き方向に向かっ
て順次レーザ光吸収性樹脂部材3の接合部6を溶融して
ゆく。
したレーザ光吸収性樹脂部材3に溶け込むため、リブの
高さは図2に示すように、当初測定しておいた高さより
も減少してゆく。リブ2の溶け込みに伴う高さの減少量
と、溶着強度との相関係数を前もって求めておき、高さ
が所定の値になったときを溶着終了時とする。
しない場合には、位置ずれなどの不具合が考えられるの
で、接合不良のアラームを出す。この結果、後検査が不
要になる。
中するため、従来の平板同士の溶着に比較して、少ない
レーザ出力で溶着を行うことができる利点もある。
て樹脂部材同士を溶着する方法の他の例を示す断面図で
ある。図3において、リブ2の幅は、レーザ光の集光パ
ターンにほぼ合わせ、レーザ光吸収性樹脂部材3に近づ
くほど狭くなるよう角度(テーパー)を設けて形成され
ている。
に到達するレーザ光4は、すべてリブ2を通過してくる
ため、レーザ光強度の減衰率が一定となる。この結果、
接合部6を照射するレーザ光4の強度が均一となり、溶
着強度がばらつくことがない。また、接合部6に到達す
るまでに吸収されるレーザエネルギーの計算が容易とな
るため、出力予想をたてることができるようになる。
であれば樹脂部材同士でなくとも接合することができ
る。例えばレーザ光透過性部材としてガラス板を使用
し、熱可塑性樹脂と溶着させることも可能である。
レーザ光を利用して2つの部材を接合する際に、両部材
の間に熱可塑性樹脂からなるリブを挿入するため、この
リブのレーザ光吸収性樹脂部材への溶け込み度合いによ
る両部材の高さの減少量から、容易に溶着状況を把握
し、管理することができる。また、リブに応力が集中す
るため、従来の平板同士の溶着に比較して、少ないレー
ザ出力で溶着を行うことができる利点もある。
にほぼ合わせ、レーザ光吸収性樹脂部材に近づくほど狭
くなるよう角度(テーパー)を設けて形成すれば、レー
ザ光強度の減衰率が一定となる。この結果、接合部を照
射するレーザ光の強度が均一となり溶着強度がばらつく
ことがない。また、接合部に到達するまでに吸収される
レーザエネルギーの計算が容易となるため、出力予想を
たてることも可能である。
るいは樹脂部材と非樹脂部材とをレーザ光で確実に溶着
させることができるため、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・電子部品の製
造に有用である。
同士を溶着する方法の一例を示す断面図
吸収性樹脂部材、4…レーザ光、5…凸レンズ、6…接
合部。
Claims (2)
- 【請求項1】 レーザ光透過性部材と、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
部材を相互に溶着する方法であって、少なくとも両部材
間の前記接合部のいずれか一方にリブを設け、このリブ
が潰れない程度の力で両部材を加圧してリブが挿入され
た両部材の高さを測定しておき、次にレーザ光を、前記
レーザ光透過性部材側からリブを透過してレーザ光吸収
性樹脂部材に入射させ、前記接合部を溶融させてリブを
レーザ光吸収性樹脂部材に溶け込ませ、このときの前記
リブの高さの減少量から溶着状態を管理することを特徴
とする樹脂部材の溶着方法。 - 【請求項2】 請求項1に記載の樹脂部材の溶着方法に
おいて、前記リブの幅は、レーザ光の集光パターンにほ
ぼ合わせ、前記レーザ光吸収性樹脂部材に近づくほど狭
くなるよう、角度を設けて形成されていることを特徴と
する樹脂部材の溶着方法。
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JP2004231174A (ja) * | 2003-01-28 | 2004-08-19 | Ti Group Automotive Systems Llc | 燃料タンク |
EP1762368A1 (en) | 2005-09-01 | 2007-03-14 | Orient Chemical Industries, Ltd. | Laser ray transmitting colored resin composition and related art |
JP2007210203A (ja) * | 2006-02-09 | 2007-08-23 | Ube Ind Ltd | レーザー溶着方法およびレーザー溶着された樹脂部材 |
WO2008090737A1 (ja) * | 2007-01-25 | 2008-07-31 | Star Micronics Co., Ltd. | ダイヤフラムポンプ |
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TWI392581B (zh) * | 2005-11-24 | 2013-04-11 | Evonik Degussa Gmbh | 利用電磁輻射的熔接方法 |
JP2007210203A (ja) * | 2006-02-09 | 2007-08-23 | Ube Ind Ltd | レーザー溶着方法およびレーザー溶着された樹脂部材 |
WO2008090737A1 (ja) * | 2007-01-25 | 2008-07-31 | Star Micronics Co., Ltd. | ダイヤフラムポンプ |
WO2008090738A1 (ja) * | 2007-01-25 | 2008-07-31 | Takasago Electric, Inc. | ダイヤフラムポンプ |
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JP2010064741A (ja) * | 2008-09-12 | 2010-03-25 | Jenoptik Automatisierungstechnik Gmbh | 発射通路を備えたエアバッグカバーおよびエアバッグカバーを製造する方法並びに装置 |
JP2011005705A (ja) * | 2009-06-24 | 2011-01-13 | Panasonic Electric Works Co Ltd | 樹脂材のレーザー溶着方法 |
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WO2016098843A1 (ja) * | 2014-12-19 | 2016-06-23 | オムロン株式会社 | レーザ溶着方法および接合構造体 |
JP2016117184A (ja) * | 2014-12-19 | 2016-06-30 | オムロン株式会社 | レーザ溶着方法および接合構造体 |
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