JP2002225140A - Method for inspecting joint - Google Patents

Method for inspecting joint

Info

Publication number
JP2002225140A
JP2002225140A JP2001020913A JP2001020913A JP2002225140A JP 2002225140 A JP2002225140 A JP 2002225140A JP 2001020913 A JP2001020913 A JP 2001020913A JP 2001020913 A JP2001020913 A JP 2001020913A JP 2002225140 A JP2002225140 A JP 2002225140A
Authority
JP
Japan
Prior art keywords
members
resin
laser
laser beam
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2001020913A
Other languages
Japanese (ja)
Other versions
JP4587575B2 (en
Inventor
Yoshiaki Nakagawa
義明 中川
Masahiro Hashiguchi
政弘 橋口
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.)
Honda Motor Co Ltd
Original Assignee
Honda 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP2001020913A priority Critical patent/JP4587575B2/en
Publication of JP2002225140A publication Critical patent/JP2002225140A/en
Application granted granted Critical
Publication of JP4587575B2 publication Critical patent/JP4587575B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B29C66/90—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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91221—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—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
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/301—Three-dimensional joints, i.e. the joined area being substantially non-flat
    • 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
    • B29C66/50—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
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • 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
    • B29C66/50—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
    • B29C66/61—Joining from or joining on the inside
    • 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
    • B29C66/50—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
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81266—Optical properties, e.g. transparency, reflectivity
    • B29C66/81267—Transparent to electromagnetic radiation, e.g. to visible light
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81455—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being a fluid inflatable bag or bladder, a diaphragm or a vacuum bag for applying isostatic pressure
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91218—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods using colour change, e.g. using separate colour indicators
    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • 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
    • B29C66/50—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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3008—Instrument panels

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To easily inspect the acceptability of a joint achieved between two members joined together using laser rays. SOLUTION: A resin member (an instrument panel) 3 showing a high laser rays absorbance and a resin member (a tact) 4 showing a high laser rays transmittance are joined together in succession while a laser head 5 is moved. Next, when the resin members 3 and 4 are heated by the laser rays, the heat is conducted to a temperature-sensitive sheet 2 under the resin members 3 and 4, which in turn becomes discolored along the moving scan track of the laser rays. Further, it is inspected whether there is a cut spot in the discolored part of the spot to be discolored remains colored and it is judged whether the joint is acceptable according to the results of the inspection.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明はレーザ光を利用して
２つの部材を接合した場合に、当該部材同士が接合され
たか否かを検査する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for inspecting whether two members have been joined when two members are joined by using a laser beam.

【０００２】[0002]

【従来の技術】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、レーザ光を透過する樹脂の側から樹脂を重ねた部分
にレーザ光を照射し、レーザ光を吸収する樹脂の一部を
溶融せしめることで、樹脂部材同士を接合する方法を本
出願人は提案した（特公平５−４２３３６号公報）。ま
た、同公報では、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した。2. Description of the Related Art A resin that transmits laser light (has a high transmittance) and a resin that absorbs laser light (has a high absorptance) are superposed on each other. The present applicant has proposed a method of joining resin members by irradiating light and melting a part of the resin that absorbs laser light (Japanese Patent Publication No. 5-42336). In addition, this publication also proposed a method of joining resin members by heating the adhesive interposed between the resin members with a laser beam instead of heating the resin members.

【０００３】[0003]

【発明が解決しようとする課題】上記方法によれば、複
雑形状の樹脂部品或いは接合個所が極めて狭い樹脂部品
同士の接合であっても、容易に行うことができる。しか
しながら、樹脂部品の全数について樹脂部品同士が接合
したか否かを検査するのは、現実問題として極めて困難
であり、抜き取りの破壊検査を行っている。抜き取りの
破壊検査を行う場合、検査対象となる樹脂部品は破壊さ
れることになるので、その分コストアップにつながる。
また、全数検査対象としないため信頼性の面でも問題が
ある。According to the above-mentioned method, it is possible to easily join even a resin part having a complicated shape or a resin part having an extremely narrow joint. However, it is extremely difficult as a practical problem to inspect whether or not the resin parts have been joined to each other with respect to all of the resin parts. In the case of performing the sampling destructive inspection, the resin component to be inspected is destroyed, which leads to an increase in cost.
In addition, there is also a problem in terms of reliability because not 100% inspection is performed.

【０００４】[0004]

【課題を解決するための手段】上記課題を解決するた
め、本発明に係る接合検査方法は、互いに重ね合わせた
２つの部材のうちの一方の部材側からレーザ光を照射
し、当該一方の部材を透過したレーザ光を他方の部材又
は接着剤に吸収せしめ、レーザ光を吸収した他方の部材
又は接着剤を加熱せしめて接合することを前提としたも
のである。具体的には感温性シートの上に２つの部材を
重ねてセットし、レーザ溶接後に当該感温性シートの変
色によって接合されているか否かを判断する。互いに接
合される部材としては樹脂部材に限らず、レーザ光を透
過するガラスなども考えられる。In order to solve the above-mentioned problems, a bonding inspection method according to the present invention irradiates a laser beam from one member side of two members which are overlapped with each other. It is assumed that the laser light transmitted through the laser beam is absorbed by the other member or the adhesive, and the other member or the adhesive that has absorbed the laser light is heated and joined. Specifically, two members are set on the temperature-sensitive sheet in a superimposed manner, and after laser welding, it is determined whether or not the two sheets are joined by discoloration of the temperature-sensitive sheet. The members to be joined to each other are not limited to resin members, and glass or the like that transmits laser light may be used.

【０００５】上記の構成とすることで、接合後に部材を
払い出すと下に残った感温性シートの熱を受けた部分が
変色している。この変色した部分の長さ、形状により２
つの部材が確実に接合されているか否かを判断すること
ができる。[0005] With the above configuration, when the members are dispensed after joining, the heat-sensitive portion of the remaining temperature-sensitive sheet that has received heat is discolored. Depending on the length and shape of this discolored part, 2
It can be determined whether the two members are securely joined.

【０００６】感温性シートとしては、例えばベース材料
にポリエチレン、ポリプロピレン、ポリ塩化ビニル、エ
ラストマー若しくはゴムを使用し、このベース材料に感
温性塗料を混ぜたものを用いる。また、感温性シートと
して可逆反応性を呈するものを選定することで、繰り返
し使用することができるので好ましい。As the temperature-sensitive sheet, for example, polyethylene, polypropylene, polyvinyl chloride, elastomer or rubber is used as a base material, and a base material mixed with a temperature-sensitive paint is used. In addition, it is preferable to select a thermosensitive sheet that exhibits reversible reactivity, since it can be used repeatedly.

【０００７】また、感温性シートとしては変色点が３５
℃〜４５℃の範囲にあるものを選定することが好まし
い。変色点が３５℃未満ではレーザ光以外の環境温度の
変化によって簡単に変色してしまい、また変色点が４５
℃を超えると、十分な接合がなされているにも拘わらず
変色しないことになる。[0007] The temperature-sensitive sheet has a discoloration point of 35.
It is preferable to select a material in the range of ° C to 45 ° C. If the discoloration point is lower than 35 ° C., the color is easily discolored due to a change in environmental temperature other than the laser beam.
If the temperature exceeds ℃, discoloration will not occur despite sufficient bonding.

【０００８】また、レーザ溶接を行うに当たって２つの
部材同士を固定しておく手段は任意であるが、２つの部
材をレーザ光透過性を有するシートで覆い、シートと部
材との間の空気を抜くことで２つの部材を固定する手段
を採用すれば、固定治具が不要となるので、レーザ光を
照射するレーザヘッドが移動する際に固定治具に干渉す
ることを防げる。Means for fixing the two members to each other in performing the laser welding is optional, but the two members are covered with a sheet having a laser beam transmitting property, and the air between the sheets is evacuated. Thus, if a means for fixing the two members is employed, a fixing jig is not required, so that interference with the fixing jig when the laser head for irradiating the laser beam moves can be prevented.

【０００９】[0009]

【発明の実施の形態】以下に本発明の実施の形態を添付
図面に基づいて説明する。図１は受け冶具に感温性シー
トをセットする状態を示す斜視図、図２は感温性シート
の上に２つの部材をセットする状態を示す斜視図、図３
は２つの部材をレーザ溶接している状態を示す図、図４
はレーザ溶接後の感温性シートの平面図である。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a state in which a temperature-sensitive sheet is set on a receiving jig, FIG. 2 is a perspective view showing a state in which two members are set on a temperature-sensitive sheet, and FIG.
FIG. 4 shows a state in which two members are laser-welded, and FIG.
FIG. 3 is a plan view of the temperature-sensitive sheet after laser welding.

【００１０】先ず、２つの部材の接合手順を説明する
と、図１に示すように、受け台1上に感温性シート２を
セットする。感温性シート２の大きさは受け台1の上面
全面を覆う大きさでもよいが、レーザ光の走査範囲をカ
バーできる大きさであればよい。First, the joining procedure of the two members will be described. As shown in FIG. 1, a temperature-sensitive sheet 2 is set on a cradle 1. The size of the temperature-sensitive sheet 2 may be a size that covers the entire upper surface of the receiving table 1, but may be any size that can cover the scanning range of the laser beam.

【００１１】次いで図２に示すように、感温性シート２
上に樹脂部材であるインストルメントパネル３とダクト
４を重ねてセットする。本実施例の場合、インストルメ
ントパネル３はレーザ光の吸収率が高い材料からなり、
ダクト４はレーザ光の透過率が高い材料からなる。Next, as shown in FIG.
The instrument panel 3 as a resin member and the duct 4 are set on top of each other. In the case of the present embodiment, the instrument panel 3 is made of a material having a high laser light absorption rate,
The duct 4 is made of a material having a high laser beam transmittance.

【００１２】この後図３に示すように、レーザヘッド５
から接合部に向けてレーザ光（ＹＡＧ）を照射する。す
ると、ダクト４はレーザ光を透過するため、照射された
レーザ光の殆どがインストルメントパネル３に到達し、
インストルメントパネル３に吸収され発熱し、この熱に
よってインストルメントパネル３とダクト４の一部が溶
融し、インストルメントパネル３とダクト４とが接合さ
れる。Thereafter, as shown in FIG.
Irradiates a laser beam (YAG) toward the bonding portion from above. Then, since the duct 4 transmits the laser light, most of the irradiated laser light reaches the instrument panel 3,
The instrument panel 3 absorbs heat and generates heat, and this heat causes a part of the instrument panel 3 and the duct 4 to melt, thereby joining the instrument panel 3 and the duct 4.

【００１３】尚、インストルメントパネル３とダクト４
との間にレーザ光を吸収して溶融する接着剤を介在せし
めてもよい。このようにすると、インストルメントパネ
ル３がレーザ光を吸収しない材料であっても接合でき
る。The instrument panel 3 and the duct 4
An adhesive that absorbs and melts the laser beam may be interposed between them. In this way, even if the instrument panel 3 is made of a material that does not absorb laser light, it can be joined.

【００１４】前記レーザヘッド５はＮＣ制御により３次
元空間で任意の位置に移動可能とされ、移動しつつ連続
して樹脂部材同士を接合する。そして、レーザ光によっ
てインストルメントパネル３が加熱せしめられるとその
熱はその下の感温性シート２にも伝わり、レーザ光の移
動軌跡に沿って変色する。この変色は図４に示すよう
に、接合後に樹脂部材を受け治具1から取り除いた際に
目視により確認できる。そこで、変色した部分に切断さ
れた個所がないか、変色すべき個所が変色していないか
否か等を検査して接合の適、不適を判断する。The laser head 5 can be moved to an arbitrary position in a three-dimensional space by NC control, and continuously joins resin members while moving. Then, when the instrument panel 3 is heated by the laser light, the heat is transmitted to the temperature-sensitive sheet 2 thereunder, and the color changes along the movement locus of the laser light. This discoloration can be visually confirmed when the resin member is removed from the jig 1 after joining as shown in FIG. Therefore, it is determined whether or not there is a cut portion in the discolored portion, whether or not a portion to be discolored has not been discolored, and the like, to judge whether or not the joining is appropriate.

【００１５】ところで、２つの樹脂部材をレーザ溶接す
る場合には、何らかの手段によって樹脂部材同士を固定
しておく必要がある。一般的な固定治具を用いると、当
該固定治具にレーザヘッド５が干渉するおそれがある。
これを解消するため、図５に示す別実施例が考えられ
る。When two resin members are laser-welded, it is necessary to fix the resin members by some means. If a general fixing jig is used, the laser head 5 may interfere with the fixing jig.
In order to solve this, another embodiment shown in FIG. 5 can be considered.

【００１６】図５に示す別実施例にあっては、インスト
ルメントパネル３とダクト４をレーザ光透過性シート６
で覆い、レーザ光透過性シート６と樹脂部材３、４との
間の空気を吸引口7から抜くことで樹脂部材３、４を固
定し、次いで前記レーザ光透過性シート６側からレーザ
光を照射し、レーザ光透過性シート６及びダクト４を透
過したレーザ光をインストルメントパネル３で吸収して
接合するようにしている。In another embodiment shown in FIG. 5, the instrument panel 3 and the duct 4
And the air between the laser light transmitting sheet 6 and the resin members 3, 4 is removed from the suction port 7 to fix the resin members 3, 4. The laser beam that has been irradiated and transmitted through the laser light transmitting sheet 6 and the duct 4 is absorbed by the instrument panel 3 and joined.

【００１７】なお、実施例にあっては接合対象として樹
脂部材を示したが、樹脂部材でなくともレーザ光を透過
する特性を有する部材であれば本発明を適用できる。Although a resin member is shown as an object to be joined in the embodiment, the present invention can be applied to any member having a characteristic of transmitting laser light even if it is not a resin member.

【００１８】[0018]

【発明の効果】以上に説明したように本発明によれば、
レーザ光を利用して部材同士を接合する際に、予め部材
の下に感温性シートを敷くようにしたので、接合後に部
材を払い出すと、その下に残った感温性シートの熱を受
けた部分が変色しているので、当該変色した部分の長
さ、形状、幅などを調べることで、接合の適、不適を即
座に判断することができる。According to the present invention as described above,
When joining members using laser light, a temperature-sensitive sheet was laid under the member in advance, so when the members were dispensed after joining, the heat of the temperature-sensitive sheet remaining under the member was removed. Since the received portion is discolored, by examining the length, shape, width, and the like of the discolored portion, it is possible to immediately determine whether the joining is appropriate or inappropriate.

【００１９】また、本発明によれば、抜き取りの破壊検
査ではなく、全数の非破壊検査であるので、信頼性が向
上するとともにコスト的にも有利となる。更に、感温性
シートとして可逆反応性のものを選定すれば、繰り返し
使用することができ、また変色点が３５℃〜４５℃のも
のを選定すれば、環境温度等の影響を受けず且つ正確に
検査することができる。Further, according to the present invention, since not all the non-destructive inspections but the destructive inspections are carried out, the reliability is improved and the cost is advantageous. Furthermore, if a reversible reactive sheet is selected as the thermosensitive sheet, it can be used repeatedly. If a discoloration point of 35 ° C. to 45 ° C. is selected, the sheet will not be affected by environmental temperature and the like and will be accurate. Can be inspected.

【図面の簡単な説明】[Brief description of the drawings]

【図１】受け冶具に感温性シートをセットする状態を示
す斜視図。FIG. 1 is a perspective view showing a state in which a thermosensitive sheet is set on a receiving jig.

【図２】感温性シートの上に２つの樹脂部材をセットす
る状態を示す斜視図。FIG. 2 is a perspective view showing a state where two resin members are set on a thermosensitive sheet.

【図３】２つの樹脂部材をレーザ溶接している状態を示
す図。FIG. 3 is a diagram showing a state where two resin members are laser-welded.

【図４】レーザ溶接後の感温性シートの平面図。FIG. 4 is a plan view of a thermosensitive sheet after laser welding.

【図５】別実施例を示す図。FIG. 5 is a view showing another embodiment.

【符号の説明】[Explanation of symbols]

１…受け台、２…感温性シート、３…インストルメント
パネル、４…ダクト、５…レーザヘッド、６…レーザ光
透過性シート、７…吸引口。DESCRIPTION OF SYMBOLS 1 ... Receiving stand, 2 ... Temperature sensitive sheet, 3 ... Instrument panel, 4 ... Duct, 5 ... Laser head, 6 ... Laser light transmissive sheet, 7 ... Suction port.

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4E068 BA00 BF00 CA14 CA17 CC00 CJ09 DB10 4F211 TA03 TC01 TD11 TN27 TN45 TN58 TW39  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4E068 BA00 BF00 CA14 CA17 CC00 CJ09 DB10 4F211 TA03 TC01 TD11 TN27 TN45 TN58 TW39

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 ２つの部材を重ね、一方の部材側からレ
ーザ光を照射し、当該一方の部材を透過したレーザ光を
他方の部材又は接着剤に吸収せしめ、レーザ光を吸収し
た他方の部材又は接着剤を加熱せしめて接合する方法を
適用した２つの部材が、接合されているか否かを検査す
る方法であって、この検査方法は感温性シートの上に２
つの部材を重ねてセットし、レーザ溶接後に当該感温性
シートの変色によって接合されているか否かを判断する
ことを特徴とする接合検査方法。1. A method in which two members are overlapped, a laser beam is irradiated from one member side, and the laser beam transmitted through the one member is absorbed by another member or an adhesive, and the other member absorbs the laser beam. Alternatively, it is a method of inspecting whether or not two members to which the method of joining by heating the adhesive has been applied are joined.
A joining inspection method comprising: setting two members to be overlapped with each other; and determining whether the thermosensitive sheets are joined by laser discoloration after laser welding. 【請求項２】 請求項１に記載の接合検査方法におい
て、前記２つの部材のうちの少なくとも一方は樹脂部材
であることを特徴とする接合検査方法。2. The bonding inspection method according to claim 1, wherein at least one of the two members is a resin member. 【請求項３】 請求項１に記載の接合検査方法におい
て、前記感温性シートは変色点が３５℃〜４５℃の範囲
にあることを特徴とする接合検査方法。3. The bonding inspection method according to claim 1, wherein the thermosensitive sheet has a discoloration point in a range of 35 ° C. to 45 ° C. 【請求項４】 請求項１に記載の樹脂検査方法におい
て、前記２つの部材をレーザ光透過性を有するシートで
覆い、シートと樹脂部材との間の空気を抜くことで２つ
の樹脂部材を固定した状態でレーザ光を接合部に照射す
ることを特徴とする接合検査方法。4. The resin inspection method according to claim 1, wherein the two members are covered with a sheet having a laser beam transmitting property, and the two resin members are fixed by releasing air between the sheet and the resin member. A bonding inspection method comprising: irradiating a laser beam to a bonding portion in a state where the bonding is performed.
JP2001020913A 2001-01-30 2001-01-30 Bonding inspection method Expired - Fee Related JP4587575B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005305985A (en) * 2004-03-22 2005-11-04 Fine Device:Kk Joining method of tubular materials, jointing method of tubular material and saddle, and laser jointing device
JP2008114420A (en) * 2006-11-01 2008-05-22 Hamamatsu Photonics Kk Laser welding method, laser welding apparatus and manufacturing method of resin product
WO2017067538A1 (en) * 2015-10-22 2017-04-27 Jenoptik Automatisierungstechnik Gmbh Welding assembly and method for producing a welding assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0722196U (en) * 1993-09-30 1995-04-21 日本ゼオン株式会社 Electric fusion tube fitting with temperature display
JPH07186331A (en) * 1993-12-27 1995-07-25 Bridgestone Corp Production of laminate
JPH07185849A (en) * 1993-11-30 1995-07-25 Elpatronic Ag Method and laser welding device for effecting process control and/or quality control upon laser butt welding of plate
JPH0985477A (en) * 1995-09-22 1997-03-31 Araco Corp Laser beam welding equipment
JPH10185066A (en) * 1996-12-18 1998-07-14 Tokyo Gas Co Ltd Electric fusion coupling and fusion confirming method
JPH11138291A (en) * 1997-11-06 1999-05-25 Honda Motor Co Ltd Welding quality judging device in welding equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0722196U (en) * 1993-09-30 1995-04-21 日本ゼオン株式会社 Electric fusion tube fitting with temperature display
JPH07185849A (en) * 1993-11-30 1995-07-25 Elpatronic Ag Method and laser welding device for effecting process control and/or quality control upon laser butt welding of plate
JPH07186331A (en) * 1993-12-27 1995-07-25 Bridgestone Corp Production of laminate
JPH0985477A (en) * 1995-09-22 1997-03-31 Araco Corp Laser beam welding equipment
JPH10185066A (en) * 1996-12-18 1998-07-14 Tokyo Gas Co Ltd Electric fusion coupling and fusion confirming method
JPH11138291A (en) * 1997-11-06 1999-05-25 Honda Motor Co Ltd Welding quality judging device in welding equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005305985A (en) * 2004-03-22 2005-11-04 Fine Device:Kk Joining method of tubular materials, jointing method of tubular material and saddle, and laser jointing device
JP2008114420A (en) * 2006-11-01 2008-05-22 Hamamatsu Photonics Kk Laser welding method, laser welding apparatus and manufacturing method of resin product
WO2017067538A1 (en) * 2015-10-22 2017-04-27 Jenoptik Automatisierungstechnik Gmbh Welding assembly and method for producing a welding assembly
CN108367505A (en) * 2015-10-22 2018-08-03 詹诺普蒂克自动化技术有限公司 Melting welding component and method for manufacturing melting welding component
CN108367505B (en) * 2015-10-22 2020-06-19 詹诺普蒂克自动化技术有限公司 Fusion welding component and method for manufacturing a fusion welding component
US11453177B2 (en) 2015-10-22 2022-09-27 JENOPTIK Automatisierngstechnik GmbH Welding assembly and method for producing a welding assembly

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