JP2008055620A - レーザ溶着構造体の製造方法 - Google Patents
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
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- 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
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- 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
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
- B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
- B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
- B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
- B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
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- 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
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
- B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
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- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/65—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool
- B29C66/652—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool moving the welding tool around the fixed article
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- 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
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- 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
- B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3425—Printed circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements
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Abstract
【解決手段】本発明は、ケース本体1aと蓋体1bとがレーザ溶着された配線基板収納ケースの製造方法において、リブ5bを有するケース本体1aと、リブ5bを介して蓋体1bとを接触させる接触工程と、レーザ光Lを蓋体1b側からリブ5bに照射してこのリブ5bを溶融させる溶融工程と、ケース本体1aと蓋体1bとを溶着させる溶着工程とを備えることを特徴とする。
【選択図】図4
Description
この製造方法では、図5(a)に示すように、まず、光透過性の樹脂からなる部材11aと、光吸収性の樹脂からなる部材11bとが相互に重ね合せられる。次に、図5(b)に示すように、部材11a側から部材11b側に向かってレーザ光Lが照射されると、部材11aを透過したレーザ光Lは、部材11bで吸収される。その結果、部材11bは発熱して溶融部12aを形成する。一方、部材11aは、図5(c)に示すように、部材11bから伝わった熱によって溶融部12bを形成する。そして、図5(d)に示すように、レーザ光Lの照射を中止することで溶融部12aと溶融部12bとが凝固すると、部材11aと部材11bとが凝固部13で相互に接合されたレーザ溶着構造体10が得られる。
したがって、従来のレーザ溶着構造体の製造方法(例えば、特許文献1参照)では、部材11aと部材11bとを接合しようとする部分にレーザ溶着を施したとしても、部材11aと部材11bとを確実に接合することが困難であった。
この製造方法では、レーザ光が照射されて突出部が溶融すると、第2部材と接触する突出部は、第2部材の表面形状に応じて変形することによって第2部材と密着する形状となる。つまり、突出部と第2部材との間に隙間が形成されることが回避されるので、第1部材と第2部材とは突出部を介して確実に接合されることとなる。
この製造方法では、突出部の幅よりも広い幅でレーザ光が突出部に照射されるので、突出部が良好に溶融する。その結果、突出部と第2部材との間に隙間が形成されることがより確実に回避されるので、第1部材と第2部材とは突出部を介してより確実に接合される。
この製造方法では、突出部と第2部材とを密着させるためのレーザ光の照射と、突出部と第2部材とをレーザ溶着させるためのレーザ光の照射とが別途に行われるので、突出部と第2部材とのレーザ溶着がより確実に行われて第1部材と第2部材とは突出部を介してより一層確実に接合される。
前記実施形態では、リブ5bがケース本体1aの開口7を環状に取り囲むように形成されているが、本発明はケース本体1aの上端面6で延びる1本のレール状のものであってもよい。また、前記実施形態では、リブ5bが開口7を環状に1重で取り囲むものについて説明したが、本発明はリブ5bが複数本並ぶものであってもよい。また、本発明は突出部がリブ5bに限定されるものではなく、例えば、突出部が断続的に連なるものであってもよい。
このような溶融工程および溶着工程におけるレーザ光Lの照射回数は、ケース本体1aおよび蓋体1bの材質、形状、ならびに大きさ(厚さ)に応じて接合状態が最良となるように適宜に設定することができる。ちなみに、溶着工程におけるレーザ光Lの照射回数が多すぎると接合部分における引張り伸び率が低下する傾向にある。また、溶着工程におけるレーザ光Lの照射回数を多くすると、接合部分の引張り強さ(破断強度)は向上するが、多すぎてもその照射回数に見合って引張り強さ(破断強度)が向上しない場合があるとともに、接合部分にボイドが形成される場合がある。そして、前記実施形態のように、ケース本体1aおよび蓋体1bが熱可塑性樹脂で形成されており、突出部がリブ5bである場合には、溶融工程におけるレーザ光Lの照射回数を1回に設定し、溶着工程における接合部5aへのレーザ光Lの照射回数を1回に設定することが望ましい。
1a ケース本体(第1部材)
1b 蓋体(第2部材)
5a 接合部(突出部)
5b リブ(突出部)
L レーザ光
Claims (4)
- 第1部材と第2部材とがレーザ溶着されたレーザ溶着構造体の製造方法において、
突出部を有する前記第1部材と、前記突出部を介して前記第2部材とを接触させる接触工程と、
レーザ光を前記第2部材側から前記突出部に照射してこの突出部を溶融させる溶融工程と、
前記第1部材と前記第2部材とを溶着させる溶着工程と、
を備えることを特徴とするレーザ溶着構造体の製造方法。 - 前記レーザ光の照射幅が、前記突出部の幅よりも広いことを特徴とする請求項1に記載のレーザ溶着構造体の製造方法。
- 前記溶着工程における前記第1部材と前記第2部材との溶着は、前記第2部材側から前記第1部材にレーザ光が照射されて行われ、この溶着工程におけるレーザ光の照射は、前記溶融工程におけるレーザ光の照射とは別途に行われることを特徴とする請求項1または請求項2に記載のレーザ溶着構造体の製造方法。
- 前記突出部が、前記第2部材に対向する前記第1部材の面上にレール状に形成されていることを特徴とする請求項1から請求項3のいずれか1項に記載のレーザ溶着構造体の製造方法。
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JP2021079635A (ja) * | 2019-11-20 | 2021-05-27 | ブランソン・ウルトラソニックス・コーポレーション | 樹脂材のレーザー溶着方法 |
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JP2004351730A (ja) * | 2003-05-29 | 2004-12-16 | Nissan Motor Co Ltd | 樹脂部品のレーザ溶着方法およびレーザ溶着装置 |
JP2005007665A (ja) * | 2003-06-17 | 2005-01-13 | Hamamatsu Photonics Kk | レーザ溶接方法およびレーザ溶接装置 |
JP2005028784A (ja) * | 2003-07-07 | 2005-02-03 | Hamamatsu Photonics Kk | レーザ溶接方法 |
JP2005288934A (ja) * | 2004-04-01 | 2005-10-20 | Denso Corp | 樹脂材のレーザ溶着方法 |
Cited By (2)
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JP2021079635A (ja) * | 2019-11-20 | 2021-05-27 | ブランソン・ウルトラソニックス・コーポレーション | 樹脂材のレーザー溶着方法 |
JP7373976B2 (ja) | 2019-11-20 | 2023-11-06 | ブランソン・ウルトラソニックス・コーポレーション | 樹脂材のレーザー溶着方法 |
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