JP2002225140A - Method for inspecting joint - Google Patents
Method for inspecting jointInfo
- 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
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
Description
【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.
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)
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.
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.
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.
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.
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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 |
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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 |
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