JP2005035069A - Member joining device and member joining method - Google Patents

Member joining device and member joining method Download PDF

Info

Publication number
JP2005035069A
JP2005035069A JP2003198258A JP2003198258A JP2005035069A JP 2005035069 A JP2005035069 A JP 2005035069A JP 2003198258 A JP2003198258 A JP 2003198258A JP 2003198258 A JP2003198258 A JP 2003198258A JP 2005035069 A JP2005035069 A JP 2005035069A
Authority
JP
Japan
Prior art keywords
laser beam
members
laser light
irradiated
pressure
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
Application number
JP2003198258A
Other languages
Japanese (ja)
Inventor
Kazuyoshi Takada
和義 高田
Yuji Sakagami
祐治 阪上
Yoshiki Muto
宜樹 武藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP2003198258A priority Critical patent/JP2005035069A/en
Publication of JP2005035069A publication Critical patent/JP2005035069A/en
Pending legal-status Critical Current

Links

Images

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
    • B29C66/80—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
    • B29C65/1629—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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • 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
    • B29C66/922—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9221—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force or the mechanical power
    • B29C66/92211—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force or the mechanical power with special measurement means or methods
    • 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
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • 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
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • 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
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/168—Laser beams making use of an absorber or impact modifier placed at the interface
    • 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
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the 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
    • B29C66/70—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Fluid Mechanics (AREA)
  • Laser Beam Processing (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Lasers (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a member joining device capable of preventing joining failure. <P>SOLUTION: This member joining device is constituted so that a laser beam transmittable first member 50 and a laser beam absorbent second member 60 are superposed one upon another to be irradiated with a laser beam 21 on the side of the first member 50 and the laser beam 21 passed through the first member 50 is absorbed by the second member 60 to heat the second member 60 to join two members 50 and 60 at a welding part 70. The member joining device is equipped with a placing stand 10 on which the first and second members 50 and 60 superposed one upon another are placed, a laser beam irradiator 20 for irradiating two members 50 and 60 with the laser beam 21, a fixing cylinder 30 for pressing two members 50 and 60 placed on the placing stand 10 to fix them and a control device 40 for controlling the laser beam irradiator 20. The control device 40 controls the laser beam irradiator 20 so as to change the output of the laser beam 21, the scanning speed of the laser beam 21, the spot diameter of the laser beam 21 and the like based on a detected surface pressure by a pressure sensor 15 and changes the energy of the emitted laser beam 21 so as to ensure the desired joining strength of the first and second members 50 and 60. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【技術分野】
本発明は、レーザ光により部材を接合する部材接合装置及びその部材接合方法に関する。
【０００２】
【背景技術】
レーザ光を透過する（透過率が高い）樹脂とレーザ光を吸収する（吸収率が高い）樹脂とを重ね合わせて載置台に載置し、レーザ光を透過する樹脂側から樹脂を重ね合わせた部分にレーザ光を照射し、レーザ光を吸収する樹脂の一部を溶融させることで、これら樹脂部材同士を接合する方法が知られている（例えば、特許文献１参照）。
【０００３】
この接合方法では、例えば、曲面状に形成された載置台に対して、２つの樹脂部材を撓らせて重ね合わせて、エアシリンダ等の固定用シリンダにより当該樹脂部材を押し付けて固定した状態でレーザ光を照射して接合したり、或いは、重ね合わせた樹脂部材をレーザ光透過性シートで覆い、当該シートから空気を吸引して、２つの樹脂部材を密着させて固定した状態でレーザ光を照射して接合が行われる（例えば、特許文献２参照）。
【０００４】
しかしながら、レーザ光を透過する樹脂部材及び／又はレーザ光を吸収する樹脂部材が、例えば、凹状又は凸状に変形していたり、反りが生じていたり、或いは、当該樹脂部材の重ね合わせの際の作業上のバラツキ等により、重ね合わせた２つの樹脂部材同士の間や樹脂部材と載置台との間に隙間が生じ、密着度が不均一となっている場合があり、このような状態で、上記のような接合方法によりレーザ光を照射して接合すると、当該接合部における強度が一定にならず、接合不良を生じるおそれがある。
【０００５】
これに対し、このような接合不良を検出する方法として、感温性シートの上に前記２つの樹脂部材を重ね合わせた状態でレーザ光の照射し、当該感温性シートの変色の有無によって当該接合部の接合の良否を判断する方法が知られている（例えば、特許文献２参照）。
【０００６】
しかしながら、このような方法では、レーザ光の照射による接合後に、即ち、事後的にしか接合不良個所を検出することが出来ず、当該接合不良の対処は、２つの樹脂部材を改めて載置し、再度レーザ光を照射して接合し直す必要があり、生産効率が良いとは言い難い。
【０００７】
【特許文献１】
特開昭６２−１４２０９２号公報
【特許文献２】
特開２００２−２２５１４０号公報
【０００８】
【発明の開示】
本発明は、レーザ光により部材を接合する部材接合装置及びその部材接合方法に関し、特に、接合不良を未然に防止することが可能な部材接合装置及び部材接合方法を提供することを目的とする。
【０００９】
上記目的を達成するために、本発明によれば、２つの部材を重ね合わせ、一方の部材側からレーザ光を照射し、前記一方の部材を透過したレーザ光を他方の部材又は前記２つの部材の間に介在する接着剤に吸収させて加熱させることにより、前記一方の部材と前記他方の部材とを接合する部材接合装置であって、前記他方の部材が載置される載置面と、前記２つの部材を前記載置面に固定する固定手段と、レーザ光を照射すると共に、前記載置面に対して相対的に移動可能なレーザ光照射手段と、を少なくとも備えており、前記載置面には、前記２つの部材に印加されている圧力を検出する圧力検出手段が設けられている部材接合装置が提供される。
【００１０】
本発明では、載置面に２つの部材を重ね合わせ、固定手段で固定した状態で、一方の部材側からレーザ光を照射し、前記一方の部材を透過したレーザ光を他方の部材又は前記２つの部材の間に介在する接着剤に吸収させて加熱させることにより、前記一方の部材と前記他方の部材とを接合する部材接合装置において、載置された２つの部材に印加されている圧力（面圧）が不均一であると、当該部材の密着性に欠け、接合不良が発生する事実に基づいて、前記２つの部材が載置される載置面に圧力検出手段を設け、当該圧力検出手段により、前記２つの部材に印可されている圧力を検出し、当該検出された圧力に基づいて接合対象部の密着性を判断する。これにより、レーザ光を照射する前に接合の良否を判断することが出来、接合不良を未然に防止することが可能となる。
【００１１】
特に上記発明においては限定されないが、前記レーザ光照射手段を制御する制御手段をさらに備え、前記圧力検出手段が検出した圧力に基づいて、照射するレーザ光のエネルギーを変化させるように、前記制御手段が前記レーザ光照射手段を制御することが好ましい。
【００１２】
また、上記目的を達成するために、本発明によれば、２つの部材を重ね合わせて載置面に載置し、一方の部材側からレーザ光を照射しながら走査して、前記一方の部材を透過したレーザ光を、他方の部材又は前記２つの部材の間に介在する接着剤に吸収させて加熱させることにより、前記一方の部材と前記他方の部材とを接合する部材接合方法であって、前記２つの部材を重ね合わせて前記載置面に載置するステップと、前記２つの部材を前記載置面に固定するステップと、前記２つの部材に印加されている圧力を検出するステップと、前記検出された圧力に基づいて、照射するレーザ光のエネルギーを変化させながら、前記２つの部材にレーザ光を照射するステップと、を備えた部材接合方法が提供される。
【００１３】
本発明では、圧力検出手段による検出結果に基づいて、照射するレーザ光のエネルギーを変化させることにより、２つの部材の密着度に応じて、レーザ光照射による接合対象部の加熱の程度を加減し、接合強度を調整することが出来るので、安定した接合強度を効率的に確保することが可能となる。
【００１４】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。
【００１５】
図１は本発明の実施形態に係る部材接合装置の全体構成を示す概略図、図２は本発明の実施形態に係る部材接合装置に樹脂部材を載置した状態を示す断面図、図３は本発明の実施形態に係る部材接合装置に樹脂部材を固定した状態を示す断面図、図４は図３の固定状態において検出された圧力と照射されるレーザ光のエネルギーとの関係の一例を示す図である。
【００１６】
本発明の実施形態に係る部材接合装置１は、図１に示すように、第１の部材５０と第２の部材６０とを重ね合わせ、第１の部材５０側からレーザ光２１を照射し、当該第１の部材５０を通過したレーザ光２１を第２の部材６０に吸収させて加熱することにより、第２の部材６０の一部を溶融させて、２つの部材５０、６０を溶着部７０で接合する装置であり、重ね合わせた第１及び第２の部材５０、６０が載置される載置台１０と、２つの部材５０、６０にレーザ光２１を照射するレーザ光照射機２０（レーザ光照射手段）と、前記載置台１０に載置された２つの部材５０、６０を押し付けて固定する、例えば、エアシリンダ等を有する固定用シリンダ３０（固定手段）と、レーザ光照射機２０を制御する制御装置４０（制御手段）と、を備えている。
【００１７】
本実施形態の部材接合装置１により接合される第１の部材５０を構成する材料としては、レーザ光を透過する染料で着色された合成樹脂を用いることが出来る。これに対し、当該部材接合装置１により接合される第２の部材６０を構成する材料としては、レーザ光を吸収するようにカーボンブラックで着色された合成樹脂を用いることが出来る。
【００１８】
本実施形態の部材接合装置１の載置台１０は、その上面に第２の部材６０が載置される載置面と、先端部が載置面から上方に若干突出するように載置台１０の内部に埋め込まれた３つの圧力センサ１５と、を有しており、当該圧力センサ１５は、所定の区域ＡＲ１、ＡＲ２（図２及び図３参照）における第１及び第２の部材５０、６０に印加される圧力（面圧）をそれぞれ検出可能なように配置されている。
【００１９】
本実施形態の部材接合装置１のレーザ光照射機２０は、載置台１０に載置された２つの部材５０、６０に対して、第１の部材５０側からレーザ光２１（ＹＡＧ）を照射するレーザヘッド２２を有しており、当該レーザヘッド２２は、載置台１０に対して相対的に移動可能に、例えばＸ−Ｙレール等に支持され、当該載置台１０に対して実質的に平行な平面方向に走査可能となっている。
【００２０】
図１に示すように、本実施形態の部材接合装置１では、載置台１０の上に第１及び第２の部材５０、６０が載置され、固定用シリンダ３０により当該２つの部材５０、６０を固定した状態で、レーザ光照射機２０のレーザヘッド２２から第１の部材５０側に向けてレーザ光２１を照射しながら、当該レーザヘッド２２を走査させ、第１の部材５０を通過したレーザ光２１を第２の部材６０に吸収させて加熱することにより、第２の部材６０の一部が溶融し、溶着部７０で第１の部材５０と第２の部材６０とが接合される。
【００２１】
本実施形態の部材接合装置１の制御装置４０は、図１に示すように、載置台１０に埋め込まれた各圧力センサ１５と、レーザ光照射機２０とにそれぞれ接続されており、当該制御装置４０は、各圧力センサ１５により検出された圧力に基づいて、例えば、レーザ光照射機２０におけるレーザ光２１の出力［Ｗ］、レーザヘッド２２の走査速度［ｍｍ／ｓｅｃ］、及び、レーザ光２１のスポット径等を変化させるように制御して、照射されるレーザ光２１のエネルギー［Ｊ／ｍｍ］を変化させることが可能となっている。
【００２２】
以下に作用について説明する。
【００２３】
図２に示すように、先ず、部材接合装置１の載置台１０の上に、レーザ光吸収性の合成樹脂から構成される第２の部材６０を載置し、さらにその上に、レーザ光透過性の合成樹脂から構成される第１の部材５０を載置する。本実施形態においては、第１の部材５０は、その一部が凸状に変形しており、載置台１０の上に載置された状態で、第１の部材５０と第２の部材６０との間には、隙間８０が形成されている。
【００２４】
次に、図３に示すように、固定用シリンダ３０が駆動して、重ね合わせた状態の第１及び第２の部材５０、６０を上方から載置台１０に押し付けて固定し、載置台１０に設けられた３つの圧力センサ１５が２つの部材５０、６０の各区域ＡＲ１、ＡＲ２における面圧をそれぞれ検出する。
【００２５】
この圧力センサ１５による面圧の検出において、固定用シリンダ３０による押し付けの前に隙間８０が形成されていた箇所の下方に位置する圧力センサ１５（図２及び図３において中央に位置する圧力センサ１５）は、同図の第１の区域ＡＲ１の面圧を検出し、同図において左右側にそれぞれ位置する２つの圧力センサは、同図の第２の区域ＡＲ２の面圧をそれぞれ検出するが、本実施形態では、上述のように固定用シリンダ３０による固定前の第１の区域ＡＲ１に隙間部８０が形成されていたことから、第１の区域ＡＲ１の面圧が第２の区域ＡＲ２の面圧より小さく検出される（［ＡＲ１の面圧］＜［ＡＲ２の面圧］）。
【００２６】
次に、図１に示すように、レーザ光照射機２０のレーザヘッド２２がレーザ光２１を照射しながら、載置台１０の載置面に対して実質的に平行な方向に沿って移動して走査して、溶着部７０で第１の部材５０と第２の部材６０とを接合する。
【００２７】
この際、図４に示すように、制御装置４０が、各圧力センサ１５による面圧の検出結果に基づいて、例えば、レーザ光２１の出力、レーザヘッド２２の走査速度、及び、レーザ光２１のスポット径等を変化させるようにレーザ光照射機２０を制御して、２つの部材５０、６０の所望する接合強度が確保されるように、検出された面圧に基づいて、照射するレーザ光２１のエネルギーを変化させる。
【００２８】
より具体的には、隙間部８０が形成されていた第１の区域ＡＲ１は、第２の区域ＡＲ２と比較して面圧が低く、密着性に欠けているので、当該区域ＡＲ１に照射するレーザ光２１の出力を高くするように、制御装置４０はレーザ光照射機２０を制御し、当該照射するレーザ光２１のエネルギーを高くして、溶着部７０の溶着強度が弱くならないようにする。
【００２９】
これに対し、第１の区域ＡＲ１より面圧が低い第２の区域ＡＲ２を接合する場合には、当該区域を照射するレーザ光２１の出力を、第１の区域ＡＲ１を照射するレーザ光２１の出力より低くするように制御装置４０がレーザ光照射機２０を制御して、当該照射するレーザ光２１のエネルギーを低くする。
【００３０】
さらに、例えば、第１の部材５０が凹状に変形したような第１及び第２の区域ＡＲ１、ＡＲ２より面圧が高い区域が存在する場合には、当該区域に照射するレーザ光２１の出力を、第２の区域ＡＲ２に照射するレーザ光２１の出力よりさらに低くするように、制御装置４０がレーザ光照射機２０を制御して、当該照射するレーザ光２１のエネルギーをさらに低くする。
【００３１】
なお、照射するレーザ光２１のエネルギーの調整は、当該レーザ光２１の出力の調整だけでなく、レーザヘッド２２の走査速度を可変させることにより行われても良い。例えば、圧力センサ１５により検出された面圧が低い区域を接合する場合には、レーザヘッド２２の走査速度を遅くし、これに対し、圧力センサ１５により検出された面圧が高い区域を接合する場合には、レーザヘッド２２の走査速度を速くして、検出された面圧に応じて、照射するレーザ光２１のエネルギーを調整する。また、照射するレーザ光２１のエネルギーの調整は、レーザ光２１の出力とレーザヘッド２２の走査速度との両方を可変させることにより行われても良い。
【００３２】
さらに、レーザ光２１のスポット径を可変させることにより、照射するレーザ光２１のエネルギーを調整しても良い。例えば、圧力センサ１５により検出された面圧が低い区域を接合する場合には、レーザ光２１を集光させて当該スポット径を小さくして、照射するレーザ光２１のエネルギーを高くし、これに対し、圧力センサ１５により検出された面圧が高い区域を接合する場合には、当該スポット径を大きくして、照射するレーザ光２１のエネルギーを低くする。
【００３３】
以上のように、本実施形態では、部材接合装置において第１及び第２の部材が載置される載置面に圧力センサを設け、当該圧力センサにより、第１及び第２の部材に印可されている圧力を検出し、当該検出された圧力に基づいて接合対象部の密着性を判断することにより、レーザ光を照射する前に接合の良否を判断することが出来、接合不良を未然に防止することが可能となる。
【００３４】
また、本実施形態では、圧力センサによる検出結果に基づいて、照射するレーザ光のエネルギーを変化させることにより、第１及び第２の部材の密着度に応じて、レーザ光照射による接合対象部の加熱の程度を加減し、接合強度を調整することが出来るので、安定した接合強度を効率的に確保することが可能となる。
【００３５】
なお、以上説明した実施形態は、本発明の理解を容易にするために記載されたものであって、本発明を限定するために記載されたものではない。したがって、上記の実施形態に開示された各要素は、本発明の技術的範囲に属する全ての設計変更や均等物をも含む趣旨である。
【００３６】
例えば、上記の実施形態では、３つの圧力センサを用いて部材接合装置を構成するように説明したが、本発明においては特にこれに限定されず、１、２又は３つ以上の圧力センサを載置台に設けて部材接合装置を構成するようにしても良い。
【００３７】
また、例えば、上述の実施形態では、被接合体をレーザ光を透過する合成樹脂から成る第１の部材と、レーザ光を吸収する合成樹脂から成る第２の部材とから構成されるものとして説明したが、本発明においては特にこれに限定されず、例えば、第１及び第２の部材のいずれにもレーザ光を透過する樹脂部材やガラス部材等を用い、これら部材間にレーザ光を吸収する接着剤を介在させて接合されるような被接合体であっても良い。
【図面の簡単な説明】
【図１】図１は、本発明の実施形態に係る部材接合装置の全体構成を示す概略図である。
【図２】図２は、本発明の実施形態に係る部材接合装置に樹脂部材を載置した状態を示す断面図である。
【図３】図３は、本発明の実施形態に係る部材接合装置に樹脂部材を固定した状態を示す断面図である。
【図４】図４は、図３の固定状態において検出された圧力と照射されるレーザ光のエネルギーとの関係の一例を示す図である。
【符号の説明】
１…部材接合装置
１０…載置台
１５…圧力センサ
２０…レーザ光照射機
２１…レーザ光
２２…レーザ光照射ヘッド
３０…固定用シリンダ
４０…制御装置
５０…第１の部材
６０…第２の部材
７０…溶着部
８０…隙間
ＡＲ１…第１の区域
ＡＲ２…第２の区域[0001]
【Technical field】
The present invention relates to a member bonding apparatus and a member bonding method for bonding members by laser light.
[0002]
[Background]
A resin that transmits laser light (high transmittance) and a resin that absorbs laser light (high absorption) are placed on the mounting table, and the resin is stacked from the resin side that transmits laser light. A method of joining these resin members by irradiating the part with laser light and melting a part of the resin that absorbs the laser light is known (for example, see Patent Document 1).
[0003]
In this joining method, for example, in a state where two resin members are bent and stacked on a mounting table formed in a curved surface, and the resin member is pressed and fixed by a fixing cylinder such as an air cylinder. Laser light is applied in a state where the resin members are joined by irradiating with laser light, or the overlapped resin members are covered with a laser light transmissive sheet, air is sucked from the sheets, and the two resin members are adhered and fixed. Irradiation is performed for bonding (see, for example, Patent Document 2).
[0004]
However, the resin member that transmits the laser beam and / or the resin member that absorbs the laser beam is deformed into a concave shape or a convex shape, warped, or overlapped with the resin member. Due to work variations and the like, there may be a gap between two superimposed resin members or between the resin member and the mounting table, and the degree of adhesion may be uneven. When the laser beam is irradiated and bonded by the bonding method as described above, the strength at the bonding portion is not constant, and there is a possibility that bonding failure may occur.
[0005]
On the other hand, as a method of detecting such a bonding failure, laser light is irradiated in a state where the two resin members are superimposed on the temperature-sensitive sheet, and the temperature-sensitive sheet is subjected to the presence or absence of discoloration. There is known a method for judging whether or not the joining portion is joined (see, for example, Patent Document 2).
[0006]
However, in such a method, after joining by laser light irradiation, that is, the joint failure location can be detected only after the fact, the countermeasure for the joint failure is to place two resin members again, It is necessary to irradiate the laser beam again and join again, and it is difficult to say that the production efficiency is good.
[0007]
[Patent Document 1]
JP-A-62-142092 [Patent Document 2]
Japanese Patent Laid-Open No. 2002-225140
DISCLOSURE OF THE INVENTION
The present invention relates to a member bonding apparatus and a member bonding method for bonding members by laser light, and in particular, an object of the present invention is to provide a member bonding apparatus and a member bonding method that can prevent bonding failure.
[0009]
In order to achieve the above object, according to the present invention, two members are overlapped, laser light is irradiated from one member side, and laser light transmitted through the one member is transmitted to the other member or the two members. A member joining device that joins the one member and the other member by absorbing and heating the adhesive interposed therebetween, and a placement surface on which the other member is placed; The apparatus includes at least a fixing unit that fixes the two members to the mounting surface, and a laser beam irradiation unit that irradiates laser light and is relatively movable with respect to the mounting surface. A member joining apparatus provided with pressure detecting means for detecting the pressure applied to the two members is provided on the mounting surface.
[0010]
In the present invention, in a state where two members are superposed on the mounting surface and fixed by the fixing means, laser light is irradiated from one member side, and the laser light transmitted through the one member is transmitted to the other member or the two members. In a member joining apparatus that joins the one member and the other member by absorbing and heating the adhesive interposed between the two members, the pressure applied to the two placed members ( If the surface pressure) is non-uniform, pressure detection means is provided on the mounting surface on which the two members are mounted based on the fact that the adhesion of the member is insufficient and poor bonding occurs. The means detects the pressure applied to the two members, and determines the adhesion of the joining target portion based on the detected pressure. As a result, it is possible to determine whether or not the bonding is good before irradiating the laser beam, and it is possible to prevent a bonding failure.
[0011]
Although not particularly limited in the above invention, the control means further includes control means for controlling the laser light irradiation means, and the control means is configured to change the energy of the laser light to be irradiated based on the pressure detected by the pressure detection means. However, it is preferable to control the laser beam irradiation means.
[0012]
Further, in order to achieve the above object, according to the present invention, two members are overlapped and placed on a placement surface, and scanning is performed while irradiating laser light from one member side, and the one member is placed. A member joining method for joining the one member and the other member by absorbing and heating the laser beam transmitted through the other member or an adhesive interposed between the two members. A step of superposing the two members on the mounting surface, a step of fixing the two members to the mounting surface, and a step of detecting a pressure applied to the two members. And irradiating the two members with laser light while changing the energy of the laser light to be irradiated based on the detected pressure.
[0013]
In the present invention, by changing the energy of the laser beam to be irradiated based on the detection result by the pressure detection means, the degree of heating of the bonding target portion by the laser beam irradiation is adjusted according to the degree of adhesion between the two members. Since the bonding strength can be adjusted, a stable bonding strength can be efficiently ensured.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
FIG. 1 is a schematic view showing an overall configuration of a member joining apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view showing a state where a resin member is placed on the member joining apparatus according to an embodiment of the present invention, and FIG. Sectional drawing which shows the state which fixed the resin member to the member joining apparatus which concerns on embodiment of this invention, FIG. 4 shows an example of the relationship between the pressure detected in the fixed state of FIG. 3, and the energy of the irradiated laser beam. FIG.
[0016]
As shown in FIG. 1, the member joining apparatus 1 according to the embodiment of the present invention superimposes the first member 50 and the second member 60, irradiates the laser beam 21 from the first member 50 side, The laser beam 21 that has passed through the first member 50 is absorbed by the second member 60 and heated, so that a part of the second member 60 is melted and the two members 50 and 60 are welded. And a laser beam irradiator 20 (laser) that irradiates the two members 50 and 60 with the laser beam 21. A light irradiation means), a fixing cylinder 30 (fixing means) having an air cylinder or the like, for example, and fixing the two members 50 and 60 placed on the mounting table 10 by pressing, and the laser light irradiation machine 20 A control device 40 (control means) for controlling To have.
[0017]
As a material constituting the first member 50 to be joined by the member joining apparatus 1 of the present embodiment, a synthetic resin colored with a dye that transmits laser light can be used. On the other hand, as a material constituting the second member 60 to be joined by the member joining apparatus 1, a synthetic resin colored with carbon black so as to absorb laser light can be used.
[0018]
The mounting table 10 of the member joining apparatus 1 according to the present embodiment has a mounting surface on which the second member 60 is mounted, and a mounting surface 10 so that the tip portion slightly protrudes upward from the mounting surface. Three pressure sensors 15 embedded therein, and the pressure sensor 15 includes first and second members 50 in predetermined areas AR 1 and AR 2 (see FIGS. 2 and 3), It arrange | positions so that the pressure (surface pressure) applied to 60 can each be detected.
[0019]
The laser beam irradiation machine 20 of the member bonding apparatus 1 according to the present embodiment irradiates the two members 50 and 60 mounted on the mounting table 10 with the laser beam 21 (YAG) from the first member 50 side. A laser head 22 is provided, and the laser head 22 is supported by, for example, an XY rail so as to be relatively movable with respect to the mounting table 10, and is substantially parallel to the mounting table 10. Scanning in the plane direction is possible.
[0020]
As shown in FIG. 1, in the member joining apparatus 1 of the present embodiment, the first and second members 50 and 60 are placed on the placing table 10, and the two members 50 and 60 are fixed by the fixing cylinder 30. In a state where the laser beam is fixed, the laser head 22 is scanned while irradiating the laser beam 21 from the laser head 22 of the laser beam irradiator 20 toward the first member 50, and the laser beam that has passed through the first member 50. By absorbing the light 21 by the second member 60 and heating, a part of the second member 60 is melted, and the first member 50 and the second member 60 are joined at the weld portion 70.
[0021]
As shown in FIG. 1, the control device 40 of the member joining apparatus 1 according to the present embodiment is connected to each pressure sensor 15 embedded in the mounting table 10 and the laser beam irradiation machine 20. Reference numeral 40 denotes, based on the pressure detected by each pressure sensor 15, for example, the output [W] of the laser beam 21 in the laser beam irradiator 20, the scanning speed [mm / sec] of the laser head 22, and the laser beam 21. It is possible to change the energy [J / mm] of the irradiated laser beam 21 by controlling so as to change the spot diameter or the like.
[0022]
The operation will be described below.
[0023]
As shown in FIG. 2, first, a second member 60 made of a laser light-absorbing synthetic resin is placed on the mounting table 10 of the member joining apparatus 1, and further, a laser beam is transmitted thereon. A first member 50 made of a synthetic resin is placed. In the present embodiment, a part of the first member 50 is deformed into a convex shape, and the first member 50 and the second member 60 are mounted on the mounting table 10. A gap 80 is formed between them.
[0024]
Next, as shown in FIG. 3, the fixing cylinder 30 is driven, and the first and second members 50 and 60 in an overlapped state are pressed against the mounting table 10 from above and fixed to the mounting table 10. The three pressure sensors 15 provided detect the surface pressures in the areas AR 1 and AR 2 of the two members 50 and 60, respectively.
[0025]
In the detection of the surface pressure by the pressure sensor 15, the pressure sensor 15 located below the portion where the gap 80 was formed before being pressed by the fixing cylinder 30 (the pressure sensor 15 located in the center in FIGS. 2 and 3). ) Detects the surface pressure of the first area AR 1 in the figure, and the two pressure sensors located on the left and right sides in the figure respectively detect the surface pressure of the second area AR 2 in the figure. but in the present embodiment, since the gap portion 80 is formed in the first area AR 1 before fixing by the fixing cylinder 30 as described above, the first surface pressure area AR 1 is the second It is detected to be smaller than the surface pressure of the area AR 2 ([surface pressure of AR 1 ] <[surface pressure of AR 2 ]).
[0026]
Next, as shown in FIG. 1, the laser head 22 of the laser beam irradiation machine 20 moves along a direction substantially parallel to the mounting surface of the mounting table 10 while irradiating the laser beam 21. It scans and the 1st member 50 and the 2nd member 60 are joined by the welding part 70. FIG.
[0027]
At this time, as shown in FIG. 4, the control device 40, for example, outputs the laser light 21, the scanning speed of the laser head 22, and the laser light 21 based on the detection result of the surface pressure by each pressure sensor 15. The laser beam irradiation device 20 is controlled so as to change the spot diameter and the like, and the laser beam 21 to be irradiated is irradiated based on the detected surface pressure so that the desired bonding strength between the two members 50 and 60 is ensured. To change the energy.
[0028]
More specifically, the first area AR 1 of the gap portion 80 has been formed, the second region AR 2 and lower surface pressure compared, since the lack of adhesion, to the area AR 1 The control device 40 controls the laser beam irradiator 20 so as to increase the output of the irradiated laser beam 21 so as to increase the energy of the irradiated laser beam 21 so that the welding strength of the welded portion 70 does not become weak. To do.
[0029]
In contrast, when the surface pressure than the first zone AR 1 are bonded a lower second zone AR 2 the output of the laser beam 21 for irradiating the area, the laser is irradiated first areas AR 1 The control device 40 controls the laser beam irradiator 20 so as to make it lower than the output of the light 21, and lowers the energy of the laser beam 21 to be irradiated.
[0030]
Further, for example, when there is an area having a higher surface pressure than the first and second areas AR 1 and AR 2 where the first member 50 is deformed into a concave shape, the laser beam 21 irradiated to the area output, so as to further lower than the output of the laser beam 21 for irradiating the second zone AR 2, the control unit 40 controls the laser beam irradiation apparatus 20, further reducing the energy of the laser beam 21 to the irradiation .
[0031]
The adjustment of the energy of the laser beam 21 to be irradiated may be performed not only by adjusting the output of the laser beam 21 but also by changing the scanning speed of the laser head 22. For example, when joining an area where the surface pressure detected by the pressure sensor 15 is low, the scanning speed of the laser head 22 is slowed, whereas an area where the surface pressure detected by the pressure sensor 15 is high is joined. In this case, the scanning speed of the laser head 22 is increased, and the energy of the laser beam 21 to be irradiated is adjusted according to the detected surface pressure. Further, the adjustment of the energy of the laser beam 21 to be irradiated may be performed by changing both the output of the laser beam 21 and the scanning speed of the laser head 22.
[0032]
Furthermore, the energy of the irradiated laser beam 21 may be adjusted by changing the spot diameter of the laser beam 21. For example, when joining an area where the surface pressure detected by the pressure sensor 15 is low, the laser beam 21 is condensed to reduce the spot diameter, and the energy of the irradiated laser beam 21 is increased. On the other hand, when joining the area where the surface pressure detected by the pressure sensor 15 is high, the spot diameter is increased and the energy of the laser beam 21 to be irradiated is decreased.
[0033]
As described above, in this embodiment, a pressure sensor is provided on the mounting surface on which the first and second members are mounted in the member bonding apparatus, and the pressure sensor applies the first and second members. By detecting the pressure that is being welded and judging the adhesion of the parts to be joined based on the detected pressure, it is possible to judge whether the joining is good or not before irradiating the laser beam, thus preventing poor joining in advance. It becomes possible to do.
[0034]
Further, in the present embodiment, the energy of the laser beam to be irradiated is changed based on the detection result by the pressure sensor, so that the bonding target portion by the laser beam irradiation is changed according to the adhesion degree of the first and second members. Since the degree of heating can be adjusted to adjust the bonding strength, a stable bonding strength can be efficiently ensured.
[0035]
The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.
[0036]
For example, in the above-described embodiment, the member joining apparatus is configured using three pressure sensors. However, the present invention is not particularly limited to this, and one, two, or three or more pressure sensors are mounted. You may make it comprise in a mounting base and comprise a member joining apparatus.
[0037]
Further, for example, in the above-described embodiment, it is assumed that the object to be joined is composed of a first member made of a synthetic resin that transmits laser light and a second member made of a synthetic resin that absorbs laser light. However, the present invention is not particularly limited to this. For example, a resin member or a glass member that transmits laser light is used for both the first and second members, and the laser light is absorbed between these members. An object to be bonded may be bonded with an adhesive interposed therebetween.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an overall configuration of a member joining apparatus according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a state in which a resin member is placed on the member joining apparatus according to the embodiment of the present invention.
FIG. 3 is a cross-sectional view showing a state in which a resin member is fixed to the member joining apparatus according to the embodiment of the present invention.
4 is a diagram showing an example of the relationship between the pressure detected in the fixed state of FIG. 3 and the energy of the irradiated laser beam.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Member joining apparatus 10 ... Mounting stand 15 ... Pressure sensor 20 ... Laser beam irradiation machine 21 ... Laser beam 22 ... Laser beam irradiation head 30 ... Fixing cylinder 40 ... Control device 50 ... 1st member 60 ... 2nd member 70 ... Welding part 80 ... Gap AR 1 ... First area AR 2 ... Second area

Claims (5)

２つの部材を重ね合わせ、一方の部材側からレーザ光を照射し、前記一方の部材を透過したレーザ光を他方の部材又は前記２つの部材の間に介在する接着剤に吸収させて加熱させることにより、前記一方の部材と前記他方の部材とを接合する部材接合装置であって、
前記他方の部材が載置される載置面と、
前記２つの部材を前記載置面に固定する固定手段と、
レーザ光を照射すると共に、前記載置面に対して相対的に移動可能なレーザ光照射手段と、を少なくとも備えており、
前記載置面には、前記２つの部材に印加されている圧力を検出する圧力検出手段が設けられている部材接合装置。Two members are overlapped, laser light is irradiated from one member side, and the laser light transmitted through the one member is absorbed by the other member or an adhesive interposed between the two members and heated. A member joining apparatus for joining the one member and the other member,
A mounting surface on which the other member is mounted;
Fixing means for fixing the two members to the mounting surface;
A laser beam irradiating means that irradiates the laser beam and is relatively movable with respect to the mounting surface;
A member joining apparatus, wherein the placement surface is provided with pressure detecting means for detecting pressure applied to the two members. 前記レーザ光照射手段を制御する制御手段をさらに備え、
前記圧力検出手段が検出した圧力に基づいて、照射するレーザ光のエネルギーを変化させるように、前記制御手段が前記レーザ光照射手段を制御する請求項１記載の部材接合装置。A control means for controlling the laser light irradiation means;
2. The member joining apparatus according to claim 1, wherein the control means controls the laser light irradiation means so as to change the energy of the laser light to be irradiated based on the pressure detected by the pressure detection means. 前記制御手段は、照射するレーザ光の出力、前記載置面に対する前記レーザ光照射手段の相対移動速度、又は、照射するレーザ光のスポット径の少なくとも一つを制御することにより、照射するレーザ光のエネルギーを変化させる請求項２記載の部材接合装置。The control means irradiates laser light by controlling at least one of the output of the laser light to be irradiated, the relative movement speed of the laser light irradiation means with respect to the mounting surface, or the spot diameter of the laser light to be irradiated. The member joining apparatus according to claim 2 which changes energy of. ２つの部材を重ね合わせて載置面に載置し、一方の部材側からレーザ光を照射しながら走査して、前記一方の部材を透過したレーザ光を、他方の部材又は前記２つの部材の間に介在する接着剤に吸収させて加熱させることにより、前記一方の部材と前記他方の部材とを接合する部材接合方法であって、
前記２つの部材を重ね合わせて前記載置面に載置するステップと、
前記２つの部材を前記載置面に固定するステップと、
前記２つの部材に印加されている圧力を検出するステップと、
前記検出された圧力に基づいて、照射するレーザ光のエネルギーを変化させながら、前記２つの部材にレーザ光を照射するステップと、を備えた部材接合方法。Two members are overlapped and placed on the placement surface, scanned while irradiating laser light from one member side, and the laser light transmitted through the one member is transmitted to the other member or the two members. It is a member joining method for joining the one member and the other member by absorbing and heating the adhesive interposed therebetween,
Placing the two members on the mounting surface in a superimposed manner;
Fixing the two members to the mounting surface;
Detecting a pressure applied to the two members;
Irradiating the two members with laser light while changing the energy of the laser light to be irradiated based on the detected pressure. 前記２つの部材にレーザ光を照射するステップにおいて、
前記２つの部材に照射するレーザ光の出力、照射するレーザ光の走査速度、又は、照射するレーザ光のスポット径の少なくとも一つを制御することにより、照射するレーザ光のエネルギーを変化させる請求項４記載の部材接合方法。In the step of irradiating the two members with laser light,
The energy of the irradiated laser beam is changed by controlling at least one of an output of the laser beam irradiated to the two members, a scanning speed of the irradiated laser beam, or a spot diameter of the irradiated laser beam. 4. The member joining method according to 4.
JP2003198258A 2003-07-17 2003-07-17 Member joining device and member joining method Pending JP2005035069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003198258A JP2005035069A (en) 2003-07-17 2003-07-17 Member joining device and member joining method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003198258A JP2005035069A (en) 2003-07-17 2003-07-17 Member joining device and member joining method

Publications (1)

Publication Number Publication Date
JP2005035069A true JP2005035069A (en) 2005-02-10

Family

ID=34208087

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003198258A Pending JP2005035069A (en) 2003-07-17 2003-07-17 Member joining device and member joining method

Country Status (1)

Country Link
JP (1) JP2005035069A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008132981A1 (en) * 2007-04-25 2008-11-06 Hamamatsu Photonics K.K. Method of welding resin and resin welding apparatus
JP2009143217A (en) * 2007-11-20 2009-07-02 Ube Ind Ltd Control method of laser beam irradiation condition and laser weld processing method
KR100955564B1 (en) * 2007-11-19 2010-04-30 미쓰비시덴키 가부시키가이샤 Welding method and welding apparatus for resin member
JP2011126237A (en) * 2009-12-21 2011-06-30 Japan Polypropylene Corp Laser welding method of resin material and welding resin molded article
CN102189684A (en) * 2011-04-29 2011-09-21 广州市光机电技术研究院 Device and method for welding plastic materials in laser transmission manner
JP7470913B2 (en) 2020-09-16 2024-04-19 パナソニックＩｐマネジメント株式会社 Laser welding equipment and laser processing equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008132981A1 (en) * 2007-04-25 2008-11-06 Hamamatsu Photonics K.K. Method of welding resin and resin welding apparatus
JP2008272955A (en) * 2007-04-25 2008-11-13 Hamamatsu Photonics Kk Resin welding method and resin welding apparatus
KR100955564B1 (en) * 2007-11-19 2010-04-30 미쓰비시덴키 가부시키가이샤 Welding method and welding apparatus for resin member
JP2009143217A (en) * 2007-11-20 2009-07-02 Ube Ind Ltd Control method of laser beam irradiation condition and laser weld processing method
JP2011126237A (en) * 2009-12-21 2011-06-30 Japan Polypropylene Corp Laser welding method of resin material and welding resin molded article
CN102189684A (en) * 2011-04-29 2011-09-21 广州市光机电技术研究院 Device and method for welding plastic materials in laser transmission manner
JP7470913B2 (en) 2020-09-16 2024-04-19 パナソニックＩｐマネジメント株式会社 Laser welding equipment and laser processing equipment

Similar Documents

Publication Publication Date Title
JP3913435B2 (en) Manufacturing method of vehicular lamp
JP5502082B2 (en) Method for producing composite materials by transmission laser welding
US7345258B2 (en) Beam welding apparatus and beam welding method
JP4572118B2 (en) Method and apparatus for trajectory welding thermoplastic moldings
JP4202836B2 (en) Laser welding method and laser welding apparatus
JP2005088585A (en) Method and apparatus for joining components by laser beam
JP2005246692A (en) Laser welding method of resin material
JP4553296B2 (en) A method for manufacturing a vehicular lamp and an apparatus for manufacturing a vehicular lamp.
CN110814518A (en) Laser plastic welding fixture and laser welding method
JP2006205515A (en) Method and apparatus for coating joint of resin-coated steel pipe
JP2005035069A (en) Member joining device and member joining method
JP2008030113A (en) Joining method of different metals
JP2002331588A (en) Laser welding method
JP2009291943A (en) Method for producing sheet junction body
JP4374526B2 (en) Method and apparatus for joining different materials
JP2004050513A (en) Method for joining resin films
JP2003225946A (en) Laser bonding method and laser bonding device
CN104999661B (en) A kind of laser synchronization welding procedure and device
KR20110090767A (en) Method for laser welding resin members and laser welded body of resin members
JP2005001172A (en) Laser processing method
JP4202853B2 (en) Laser welding method
JP3827070B2 (en) Laser multi-layer bonding method for resin members
JP7470913B2 (en) Laser welding equipment and laser processing equipment
JP2019001150A (en) Laser welding method and laser welding device for welding workpieces
JP4089440B2 (en) Method of joining thermoplastic resin by laser