JP2001071384A - Laser welding method for resin members - Google Patents
Laser welding method for resin membersInfo
- Publication number
- JP2001071384A JP2001071384A JP24697799A JP24697799A JP2001071384A JP 2001071384 A JP2001071384 A JP 2001071384A JP 24697799 A JP24697799 A JP 24697799A JP 24697799 A JP24697799 A JP 24697799A JP 2001071384 A JP2001071384 A JP 2001071384A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- resin member
- laser
- laser light
- members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—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
- 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
- B29C65/02—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
- 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
- B29C66/70—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
- B29C66/731—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 intensive physical properties of the material of the parts to be joined
- B29C66/7311—Thermal properties
- B29C66/73115—Melting point
- B29C66/73116—Melting point of different melting point, i.e. the melting point of one of the parts to be joined being different from the melting point of the other part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1606—Ultraviolet [UV] radiation, e.g. by ultraviolet excimer lasers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
- B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1687—Laser beams making use of light guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/733—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
- B29C66/7332—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being coloured
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/002—Coloured
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0026—Transparent
- B29K2995/0027—Transparent for light outside the visible spectrum
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Thermal Sciences (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
(57)【要約】
【課題】 樹脂部材の接合において樹脂部材同士を強固
に接合させるとともにその樹脂部材の色調に差が生じる
ことなく接合させることができる接合方法を提供するこ
と。
【解決手段】 本発明の樹脂部材のレーザー溶着方法
は、レーザー光に対して非吸収性の第一樹脂部材１と、
レーザー光に対して吸収性の第二樹脂部材２とを重ね合
わせ、重ね合わせ部に第一樹脂部材１側からレーザー光
３を照射して溶着させる樹脂部材のレーザー溶着方法に
おいて、第一樹脂部材１は第一樹脂と第一樹脂に分散し
たレーザー光に対して非吸収性の着色料とからなり、第
二樹脂部材２は第二樹脂と第二樹脂に分散したレーザー
光に対して吸収性の着色料とからなることことを特徴と
する。本発明の樹脂部材のレーザー溶着方法は、ともに
着色料で着色した樹脂部材を溶着させるため、接合され
た樹脂部材の見た目の違和感が生じなくなる。
(57) Abstract: To provide a joining method capable of firmly joining resin members together in joining resin members without causing a difference in color tone of the resin members. SOLUTION: The laser welding method of the resin member of the present invention comprises: a first resin member 1 which is non-absorbable to laser light;
In a laser welding method for a resin member, the first resin member is overlapped with a second resin member 2 that absorbs a laser beam, and the overlapping portion is irradiated with a laser beam 3 from the first resin member 1 side to be welded. Reference numeral 1 denotes a first resin and a colorant that is non-absorbable with respect to the laser light dispersed in the first resin. The second resin member 2 is capable of absorbing the laser light dispersed in the second resin and the second resin. And a coloring agent. In the method of laser welding a resin member according to the present invention, the resin members colored with a colorant are both welded, so that the appearance of the joined resin members does not become unnatural.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、レーザー光を照射
して樹脂部材を溶着させるレーザー溶着方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser welding method for welding a resin member by irradiating a laser beam.
【０００２】[0002]
【従来の技術】従来、樹脂部材同士を接合する方法とし
て、熱を加えて溶着する物理的接合方法、接着剤等を用
いて接合する化学的接合方法、あるいはレーザー光を用
いて溶着するレーザー溶着方法等の接合方法が知られて
いる。2. Description of the Related Art Conventionally, as a method of joining resin members, a physical joining method of applying heat and welding, a chemical joining method of joining using an adhesive or the like, or a laser welding of welding using a laser beam. A joining method such as a method is known.
【０００３】物理的接合方法は、接合しようとする樹脂
部材の接合面で、メタルメッシュ等の発熱体を発熱さ
せ、この接合面を溶融させるとともに、樹脂部材を圧接
した状態で冷却、硬化させて接合させる方法である。In the physical joining method, a heating element such as a metal mesh is heated at a joining surface of a resin member to be joined, the joining surface is melted, and the resin member is cooled and hardened in a pressed state. It is a method of joining.
【０００４】また、化学的接合方法は、樹脂部材の接合
面に、ホットメルト等の接着剤を介在させ、一方の樹脂
部材表面から高周波あるいは超音波を付与することで接
着剤を加熱、溶融させた後に、樹脂部材を圧接し、冷
却、硬化させることで接合させる方法である。Further, in the chemical bonding method, an adhesive such as hot melt is interposed on a bonding surface of a resin member, and high frequency or ultrasonic waves are applied from one resin member surface to heat and melt the adhesive. Then, the resin members are pressed into contact with each other, cooled, and cured to join them.
【０００５】また、レーザー溶着方法は、たとえば、特
開昭６０−２１４９３１号に開示されているように、レ
ーザー光に対して非吸収性の樹脂部材と、レーザー光に
対して吸収性の樹脂部材とを当接させて溶着させる溶着
方法である。詳しくは、非吸収性の樹脂部材側からレー
ザー光を接合面に照射して、接合面を形成する吸収性を
示す樹脂部材をレーザー光のエネルギーで溶融させ接合
する方法である。Further, as disclosed in, for example, Japanese Patent Application Laid-Open No. 60-214931, a laser welding method includes a resin member that does not absorb laser light and a resin member that absorbs laser light. Are brought into contact with each other for welding. More specifically, a method of irradiating a bonding surface with a laser beam from a non-absorbing resin member side and melting the bonding resin member forming the bonding surface with the energy of the laser beam and bonding.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
物理的接合方法は、同種の樹脂部材同士は十分に強固に
接合させることができるが、種類の異なる樹脂部材を接
合する際には樹脂材料同士の溶融温度が異なり、さらに
お互いの相溶性の問題もあり、強固な接合が困難となっ
ていた。However, in the above-described physical joining method, resin members of the same kind can be joined sufficiently firmly, but when joining resin members of different types, the resin materials are joined together. Have different melting temperatures, and there is also a problem of mutual compatibility.
【０００７】また、化学的接合方法においても、同種の
樹脂部材同士は十分に強固に接合させることができる
が、種類の異なる樹脂部材同士の接合には同様に問題を
有していた。すなわち、異なる樹脂部材同士の接合に
は、樹脂材料の材質によっては接着剤の接着力が低下す
るという問題を有していた。Further, in the chemical bonding method, resin members of the same kind can be sufficiently firmly bonded to each other, but there is a similar problem in bonding resin members of different types. In other words, joining different resin members has a problem that the adhesive strength of the adhesive is reduced depending on the material of the resin material.
【０００８】さらに、特開昭６０−２１４９３１号に記
載のレーザー溶着方法は、同種あるいは異なる種類の樹
脂部材の接合においてその接合力は十分であるが、接合
される樹脂部材がレーザー光に対して吸収性を有するも
のと吸収性を有さないものの２種類となるため、その色
調に差が生じ、接合された樹脂部材の使用用途に限界が
あった。具体的には、レーザー光に対して非吸収性の樹
脂材料は白色あるいは透明のレーザー光透過色であり、
吸収性の部材は黒色系のレーザー光吸収色であるため、
見た目の違和感を生じるようになっていた。すなわち、
このような異なる色の樹脂材料を接合すると、見た目の
接合力が弱く感じられるとともに、接合部が目立つとい
う問題を有していた。Further, in the laser welding method described in Japanese Patent Application Laid-Open No. Sho 60-214931, the joining force of a resin member of the same type or different type is sufficient, but the resin member to be joined is Since there are two types, those having absorptivity and those having no absorptivity, there is a difference in the color tone, and there is a limit to the use of the joined resin members. Specifically, the resin material that does not absorb laser light is a white or transparent laser light transmission color,
Since the absorptive member is a black laser light absorbing color,
It seemed to make me look strange. That is,
When resin materials of such different colors are joined, there is a problem that the apparent joining strength is weak and the joining portion is conspicuous.
【０００９】本発明は、上記実状を鑑みてなされたもの
であり、樹脂部材の接合において樹脂部材同士を強固に
接合させるとともにその樹脂部材の色調に差が生じるこ
となく接合させることができる接合方法を提供すること
を課題とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and is a joining method capable of firmly joining resin members in joining resin members and joining the resin members without causing a difference in color tone. The task is to provide
【００１０】[0010]
【課題を解決する手段】上記課題を解決するために本発
明者等は、異なる種類の樹脂部材の接合においても強固
に接合できるレーザー光を用いた接合方法について検討
を重ねた結果、レーザー光を吸収しない樹脂部材にレー
ザー光を吸収しない染料を配合してこのレーザー光を吸
収しない樹脂部材側からレーザー光を照射することで、
樹脂部材同士の接合部の見た目に違和感を生じさせるこ
となく強固に接合できることを見出した。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have repeatedly studied a joining method using a laser beam which can firmly join even different types of resin members. By blending a dye that does not absorb laser light into a resin member that does not absorb and irradiating laser light from the resin member side that does not absorb this laser light,
It has been found that the resin members can be firmly joined without causing a sense of incongruity in appearance.
【００１１】すなわち、本発明の樹脂の接合方法は、レ
ーザー光に対して非吸収性の第一樹脂部材と、レーザー
光に対して吸収性の第二樹脂部材とを重ね合わせ、重ね
合わせ部に第一樹脂部材側からレーザー光を照射して溶
着させる樹脂部材のレーザー溶着方法において、第一樹
脂部材は第一樹脂と該第一樹脂に分散したレーザー光に
対して非吸収性の着色料とからなり、該第二樹脂部材は
第二樹脂と該第二樹脂に分散したレーザー光に対して吸
収性の着色料とからなることを特徴とする。That is, according to the resin bonding method of the present invention, a first resin member that is non-absorbable with respect to laser light and a second resin member that is capable of absorbing laser light are superimposed on each other. In the laser welding method of a resin member that is irradiated by welding a laser beam from the first resin member side, the first resin member is a first resin and a colorant that is non-absorbing with respect to the laser light dispersed in the first resin. Wherein the second resin member comprises a second resin and a colorant that absorbs laser light dispersed in the second resin.
【００１２】本発明の樹脂部材のレーザー溶着方法は、
レーザー光が接合面で不均一なエネルギ分布を持った加
熱、溶融が行われることにより、樹脂部材同士が接合部
において互いに絡み合った接合部となるため、接合力が
強くなる。さらに、第一樹脂部材をレーザー光に対して
非吸収性の着色料で着色するため、同色同士の樹脂を接
合することができるようになり、接合された樹脂部材の
見た目もよくなる。The laser welding method for a resin member according to the present invention comprises:
When the laser beam is heated and melted with non-uniform energy distribution on the bonding surface, the resin members become entangled with each other at the bonding portion, so that the bonding force increases. Furthermore, since the first resin member is colored with a coloring agent that is non-absorbable with respect to laser light, resins of the same color can be joined, and the appearance of the joined resin members also improves.
【００１３】[0013]
【発明の実施の形態】本発明の樹脂部材のレーザー溶着
方法は、レーザー光に対して非吸収性の第一樹脂部材
と、レーザー光に対して吸収性の第二樹脂部材と、を重
ね合わせた状態で、第一樹脂部材側からレーザー光を照
射して溶着させる溶着方法である。BEST MODE FOR CARRYING OUT THE INVENTION In the laser welding method of a resin member according to the present invention, a first resin member which does not absorb laser light and a second resin member which absorbs laser light are overlapped. This is a welding method of irradiating a laser beam from the first resin member side in the state of being welded.
【００１４】第一樹脂部材は、第一樹脂と、第一樹脂を
着色するレーザー光に対して非吸収性の着色料と、から
なる。The first resin member includes a first resin, and a coloring agent that is non-absorbable with respect to a laser beam for coloring the first resin.
【００１５】第一樹脂部材は、レーザー光に対して非吸
収性の着色料で着色される。第一樹脂部材を着色する着
色料は、レーザー光に対して非吸収性である。このた
め、レーザー光が照射されたとき、第一樹脂部材は、レ
ーザー光を吸収することなく透過させることができる。[0015] The first resin member is colored with a colorant that is non-absorbable with respect to laser light. The coloring agent for coloring the first resin member is non-absorbable to laser light. For this reason, when the laser light is irradiated, the first resin member can transmit the laser light without absorbing it.
【００１６】第一樹脂部材を形成する第一樹脂として
は、レーザー光に対して十分な吸収性を示さない樹脂で
あればどのような種類の樹脂を用いてもよい。たとえ
ば、ポリアミド、ポリプロピレン、スチレン−アクリロ
ニトリル共重合体をあげることができる。As the first resin forming the first resin member, any type of resin may be used as long as the resin does not exhibit sufficient absorptivity to laser light. For example, polyamide, polypropylene, and styrene-acrylonitrile copolymer can be used.
【００１７】ここで、十分な吸収性とは、レーザー光を
受けた部分がレーザー光を吸収し、その部分が溶融する
ような吸収性をいう。したがって、十分な吸収性を示さ
ないとは、たとえばわずかなレーザー光の吸収があって
も、大部分が透過し、その部分の樹脂が溶融しない吸収
性をいう。Here, "sufficient absorptivity" refers to absorptivity such that a portion that has received the laser beam absorbs the laser beam and the portion melts. Therefore, "not exhibiting sufficient absorptivity" means, for example, an absorptivity in which even if a small amount of laser light is absorbed, most of the light is transmitted and the resin in that portion is not melted.
【００１８】第一樹脂部材に着色する着色料としては、
レーザー光に対して十分な吸収性を示さない非吸収性を
示すものであればよい。詳しくは、着色される樹脂およ
び着色する色により異なるが、たとえば、アンスラキノ
ン系染料、ペリレン系、ペリノン系、複素環系、ジスア
ゾ系、モノアゾ系等の有機系染料をあげることができ
る。また、これらの染料を混合させて用いるてもよい。As a coloring agent for coloring the first resin member,
Any material may be used as long as it exhibits non-absorptivity that does not exhibit sufficient absorptivity to laser light. Specifically, although it depends on the resin to be colored and the color to be colored, examples thereof include organic dyes such as anthraquinone-based dyes, perylene-based, perinone-based, heterocyclic-based, disazo-based and monoazo-based dyes. Further, these dyes may be mixed and used.
【００１９】ここで、第一樹脂部材は、照射されるレー
ザー光に対して９５％以上の透過率を有することが好ま
しい。９５％以上の高い透過率を有することで、照射さ
れたレーザー光は、効率よくエネルギーが溶着に使用さ
れる。Here, it is preferable that the first resin member has a transmittance of 95% or more to the irradiated laser beam. By having a high transmittance of 95% or more, energy of the irradiated laser light is efficiently used for welding.
【００２０】第二樹脂部材は、第二樹脂と、レーザー光
に対して吸収性を有する着色料と、からなる。The second resin member comprises a second resin and a coloring agent having absorptivity to laser light.
【００２１】第二樹脂部材は、レーザー光に対して吸収
性を有する着色料で着色される。このため、レーザー光
が照射されたとき、レーザー光が吸収され、第二樹脂部
材を溶融する。すなわち、すなわち、本発明のレーザー
溶着方法においては、第一樹脂部材を透過したレーザー
光を吸収し、第二樹脂部材自身および当接する第一樹脂
部材を溶融させ、接合する。The second resin member is colored with a coloring agent having absorptivity to laser light. Therefore, when the laser light is applied, the laser light is absorbed and the second resin member is melted. That is, in the laser welding method of the present invention, the laser light transmitted through the first resin member is absorbed, and the second resin member itself and the abutting first resin member are melted and joined.
【００２２】第二樹脂部材を形成する第二樹脂として
は、レーザー光に対して十分な吸収性を示す樹脂であれ
ばどのような種類の樹脂を用いてもよい。たとえば、ポ
リアミド、ポリプロピレン、スチレン−アクリロニトリ
ル共重合体等の樹脂にカーボンブラック等の補助剤を添
加してなる樹脂や、これらの樹脂をガラス繊維、カーボ
ン繊維で強化した樹脂等をあげることができる。As the second resin forming the second resin member, any type of resin may be used as long as the resin has a sufficient absorbance to laser light. For example, resins obtained by adding an auxiliary agent such as carbon black to resins such as polyamide, polypropylene, and styrene-acrylonitrile copolymer, and resins obtained by reinforcing these resins with glass fibers and carbon fibers can be used.
【００２３】また、上記以外の成分、たとえば、ガラ
ス、シリカ、タルク、炭酸カルシウム等の無機または有
機物よりなるフィラー、帯電防止剤、耐候安定剤、ワッ
クス等の慣用の添加物の１種以上を本発明の目的を損な
わない範囲で樹脂成分中に含有させることができる。Further, one or more components other than those described above, for example, fillers made of inorganic or organic substances such as glass, silica, talc, calcium carbonate and the like, antistatic agents, weather stabilizers, waxes and the like, are used. It can be contained in the resin component within a range that does not impair the object of the invention.
【００２４】第二樹脂部材を着色する着色料としては、
たとえば、前述の補助剤として用いられるグラファイト
等の炭素系材料、複合酸化物系顔料等の無機系着色料を
あげることができる。As a coloring agent for coloring the second resin member,
For example, a carbon-based material such as graphite and an inorganic colorant such as a composite oxide-based pigment used as the above-mentioned auxiliary agent can be used.
【００２５】また、レーザー光に対して、十分な吸収性
を示すものであれば、有機系着色材を用いてもよい。こ
のような着色材として、たとえば、銅フタロジアニン系
顔料等をあげることができる。Further, an organic coloring material may be used as long as it shows a sufficient absorptivity to laser light. As such a coloring material, for example, a copper phthalodianine-based pigment or the like can be given.
【００２６】第二樹脂部材は、照射されるレーザー光に
対して５％以下の透過率を有することが好ましい。透過
率が５％を超えて大きくなると、照射されたレーザー光
が透過することにより第二樹脂部材に吸収されるレーザ
ー光のエネルギーが減少するとともに、レーザー光のエ
ネルギーのロスが生じるようになるためである。It is preferable that the second resin member has a transmittance of 5% or less with respect to the irradiated laser beam. If the transmittance exceeds 5%, the energy of the laser light absorbed by the second resin member by transmitting the irradiated laser light decreases, and energy loss of the laser light occurs. It is.
【００２７】本発明のレーザー溶着方法に用いられるレ
ーザー光としては、ガラス：ネオジム3+レーザー、ＹＡ
Ｇ：ネオジム3+レーザー、ルビーレーザー、ヘリウム−
ネオンレーザー、クリプトンレーザー、アルゴンレーザ
ー、Ｈ2レーザー、Ｎ2レーザー、半導体レーザー等のレ
ーザー光をあげることができる。より好ましいレーザー
としては、ＹＡＧ：ネオジム3+レーザーである。The laser beam used in the laser welding method of the present invention is glass: neodymium 3+ laser, YA
G: Neodymium 3+ laser, ruby laser, helium-
Examples include laser light such as a neon laser, a krypton laser, an argon laser, an H 2 laser, an N 2 laser, and a semiconductor laser. A more preferred laser is a YAG: Neodymium 3+ laser.
【００２８】レーザー光の波長は、接合される樹脂材料
により異なるため一概に決定できないが、１０６０ｎｍ
以下であることが好ましい。波長が１０６０ｎｍを超え
ると、接合面を互いに溶融させることが困難となる。Although the wavelength of the laser beam differs depending on the resin material to be joined, it cannot be determined unconditionally.
The following is preferred. When the wavelength exceeds 1060 nm, it is difficult to melt the bonding surfaces.
【００２９】また、レーザー光の出力は、５〜３０Ｗで
あることが好ましい。レーザー光の出力が５Ｗ未満で
は、出力が低く樹脂材料の接合面を互いに溶融させるこ
とが困難となり、３０Ｗを超えると、出力が過剰となり
樹脂材料が蒸発したり、変質するという問題が生じるよ
うになる。The output of the laser beam is preferably 5 to 30 W. When the output of the laser beam is less than 5 W, the output is low and it becomes difficult to melt the joining surfaces of the resin materials. When the output exceeds 30 W, the output becomes excessive and the resin material evaporates or deteriorates. Become.
【００３０】本発明のレーザー溶着方法は、第一樹脂部
材と第二樹脂部材を重ね合わせた状態で、この重ね合わ
せ部に第一樹脂部材側からレーザー光を照射すること
で、レーザー光に対して非吸収性の第一樹脂部をレーザ
ー光が透過する。透過したレーザー光は、第二樹脂部材
表面に到達し、エネルギとして蓄積される。この蓄積さ
れたエネルギ分布は、レーザー光があらかじめ持ってい
たエネルギ分布に対して第一樹脂部材の透過の際の散乱
によって、不均一なエネルギ分布となる。そして、接合
面においては、不均一なエネルギ分布を持った加熱、溶
融が行われるため、第一樹脂部材および第二樹脂部材が
互いに絡み合った状態の接合部が生じ、得られる接合体
の接合部が強固になる。According to the laser welding method of the present invention, a laser beam is irradiated from the first resin member side to the overlapped portion in a state where the first resin member and the second resin member are overlapped. The laser beam is transmitted through the non-absorbing first resin portion. The transmitted laser beam reaches the surface of the second resin member and is stored as energy. This accumulated energy distribution becomes non-uniform energy distribution due to scattering at the time of transmission through the first resin member with respect to the energy distribution previously held by the laser beam. Then, on the joint surface, since heating and melting with non-uniform energy distribution are performed, a joint portion in which the first resin member and the second resin member are entangled with each other is generated, and the joint portion of the obtained joint body is obtained. Becomes stronger.
【００３１】[0031]
【実施例】以下、実施例を用いて本発明を説明する。The present invention will be described below with reference to examples.
【００３２】本発明の実施例として、実際に樹脂部材を
レーザー溶着して接合した。As an example of the present invention, a resin member was actually welded by laser welding.
【００３３】本実施例は、図１に示されるＹＡＧ：ネオ
ジムレーザー装置を用いて、板状に形成された第一樹脂
部材１と第二樹脂部材２とをレーザー溶着した。このと
き、レーザー溶着に用いられたレーザー光は、波長が１
０６０ｎｍ、出力が３０Ｗであった。In this embodiment, the first resin member 1 and the second resin member 2 formed in a plate shape were laser-welded using the YAG: Neodymium laser device shown in FIG. At this time, the laser beam used for laser welding has a wavelength of 1
060 nm and the output was 30 W.
【００３４】なお、ＹＡＧ：ネオジムレーザー装置は、
図１に示されるように、レーザー発生装置５により発生
したレーザー光を光ファイバ６を用いてレーザー集光レ
ンズ４に伝達し、このレーザー集光レンズ４から樹脂部
材１、２の当接部にレーザー光を照射する装置である。Incidentally, the YAG: neodymium laser device is
As shown in FIG. 1, a laser beam generated by a laser generator 5 is transmitted to a laser condenser lens 4 using an optical fiber 6, and the laser light is transmitted from the laser condenser lens 4 to a contact portion between the resin members 1 and 2. It is a device that irradiates laser light.
【００３５】第一樹脂部材１は、黒色有機系染料により
着色されたポリプロピレン樹脂よりなり、ＹＡＧレーザ
ーの透過率は９８％であった。ここで、第一樹脂部材を
着色する黒色有機系染料としては、アンスラキノン系緑
色染料（Ｃ．Ｉ．Ｓｏｌｖｅｎｔ Ｇｒｅｅｎ ３）を
５６．９ｗｔ％、アンスラキノン系赤色染料（Ｃ．Ｉ．
Ｓｏｌｖｅｎｔ Ｒｅｄ ２２）を４３．１ｗｔ％の割
合で混合した染料が用いられた。The first resin member 1 was made of a polypropylene resin colored with a black organic dye, and the transmittance of the YAG laser was 98%. Here, as the black organic dye for coloring the first resin member, 56.9 wt% of an anthraquinone green dye (CI Solvent Green 3) and 56.9 wt% of an anthraquinone red dye (CI.
Solvent Red 22) was used at a ratio of 43.1 wt%.
【００３６】また、第二樹脂部材２は、カーボンブラッ
クで黒色に着色したポリプロピレン樹脂よりなり、ＹＡ
Ｇレーザーの透過率は０％、すなわちレーザー光に対し
て吸収性を示した。The second resin member 2 is made of a polypropylene resin colored black with carbon black.
The transmittance of the G laser was 0%, that is, it exhibited absorptivity to laser light.
【００３７】本実施例のレーザー溶着は、まず、第一樹
脂部材１を第二樹脂部材２に重ね合わせた状態で、レー
ザー溶着装置に配置した。このとき、第一樹脂部材１お
よび第二樹脂部材２は、機械的クランプ装置により圧接
した状態で保持された。その後、この第一樹脂部材１お
よび第二樹脂部材２の重ね合わされた部分に第一樹脂部
材１側からＹＡＧレーザー光を２〜３秒間、照射した。
この照射により第一樹脂部材１と第二樹脂部材２との当
接面部において、溶融、硬化が生じ、溶着した。In the laser welding of this embodiment, first, the first resin member 1 was placed on the laser welding device in a state of being superimposed on the second resin member 2. At this time, the first resin member 1 and the second resin member 2 were held in a state of being pressed by the mechanical clamping device. Thereafter, a YAG laser beam was irradiated from the first resin member 1 side to the overlapped portion of the first resin member 1 and the second resin member 2 for 2 to 3 seconds.
Due to this irradiation, melting and hardening occurred at the contact surface between the first resin member 1 and the second resin member 2 and were welded.
【００３８】以下、本実施例のレーザー溶着における溶
着機構を説明する。Hereinafter, a welding mechanism in laser welding according to the present embodiment will be described.
【００３９】まず、第一樹脂部材と第二樹脂部材の重ね
合わせ部にレーザー光が第一樹脂部材側から照射され
る。照射されたＹＡＧレーザー光は、第一樹脂部材を透
過する。このとき、レーザー光は、その照射方向に対し
て直進するのではなく、単結晶構造を持たない樹脂部材
中においては、散乱した状態で進行する。その後、第一
樹脂部材を透過したレーザー光は、第二樹脂部材との当
接面に到達する。第二樹脂部材は、レーザー光の透過率
が０％であり、到達したレーザー光を吸収し、この吸収
したエネルギーにより溶融が生じる。このとき、レーザ
ー光は、第一樹脂部材を透過する際に散乱が生じている
ため、第二樹脂部材２との当接面に到達したときにも、
偏りが生じている。この不均一なレーザー光による不均
一な加熱、溶融が圧接した状態で行われることで、第一
樹脂部材と第二樹脂部材の当接面に絡み合った接合部を
生じるようになる。First, a laser beam is irradiated from the first resin member side to the overlapping portion of the first resin member and the second resin member. The irradiated YAG laser beam passes through the first resin member. At this time, the laser beam does not travel straight in the irradiation direction, but travels in a scattered state in the resin member having no single crystal structure. Thereafter, the laser light transmitted through the first resin member reaches a contact surface with the second resin member. The second resin member has a laser beam transmittance of 0%, absorbs the reached laser beam, and is melted by the absorbed energy. At this time, since the laser light is scattered when transmitting through the first resin member, even when the laser light reaches the contact surface with the second resin member 2,
There is a bias. When the non-uniform heating and melting by the non-uniform laser light are performed in a pressure-contact state, a joined portion entangled with the contact surface between the first resin member and the second resin member is generated.
【００４０】本実施例において溶着された第一樹脂部材
および第二樹脂部材の接合部は、図２に示されるように
互いに絡み合った状態で溶着しているため、強固な接合
状態を形成し、高い接合強度および耐圧強度を有してい
る。In the present embodiment, since the welded portions of the first resin member and the second resin member welded in a state of being entangled with each other as shown in FIG. 2, a strong bonding state is formed. It has high bonding strength and pressure resistance.
【００４１】さらに、本実施例においては、第一樹脂部
材および第二樹脂部材が同色の黒色に着色されているた
め、溶着部が確認しにくくなっている。さらに、同色の
樹脂部材同士を溶着しているため、異色の樹脂部材の溶
着時に生じていた見た目の違和感も生じなくなってい
た。Further, in this embodiment, since the first resin member and the second resin member are colored in the same color black, it is difficult to confirm the welded portion. Further, since the resin members of the same color are welded to each other, the appearance of unnaturalness caused when the resin members of different colors are welded to each other does not occur.
【００４２】[0042]
【発明の効果】本発明の樹脂部材のレーザー溶着方法
は、着色された樹脂部材をレーザー溶着により高い接合
強度で接合することができる。このため、溶着される樹
脂部材を同色にすることができ、見た目の違和感が無く
なるとともに、溶着部が目立たなくなる効果を有する。According to the laser welding method for a resin member of the present invention, a colored resin member can be bonded by laser welding with high bonding strength. For this reason, the resin members to be welded can be made the same color, and there is an effect that the uncomfortable feeling is eliminated and the welded portions are not noticeable.
【図１】 実施例に用いられたＹＡＧレーザー照射装置
を示した図である。FIG. 1 is a diagram showing a YAG laser irradiation device used in an example.
【図２】 実施例において接合された樹脂部材の接合部
を示した図である。FIG. 2 is a view showing a joint portion of resin members joined in the embodiment.
１…第一樹脂部材 ２…第二樹脂部材 ３…レーザー光 ４…レーザー集光レ
ンズ ５…レーザー発生装置 ６…光ファイバーDESCRIPTION OF SYMBOLS 1 ... First resin member 2 ... Second resin member 3 ... Laser beam 4 ... Laser focusing lens 5 ... Laser generator 6 ... Optical fiber
───────────────────────────────────────────────────── フロントページの続き (72)発明者 浅川 久紀 東京都中央区日本橋馬喰町一丁目７番６号 大日精化工業株式会社内 Ｆターム(参考） 4F211 AA11 AB12 AB18 AC03 AD05 TA01 TC02 TD11 TN27 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kuki Asakawa 1-7-6, Bakurocho, Nihonbashi, Chuo-ku, Tokyo Dainichi Seika Kogyo Co., Ltd. F-term (reference) 4F211 AA11 AB12 AB18 AC03 AD05 TA01 TC02 TD11 TN27
Claims (1)
部材と、レーザー光に対して吸収性の第二樹脂部材とを
重ね合わせ、重ね合わせ部に該第一樹脂部材側からレー
ザー光を照射して溶着させる樹脂部材のレーザー溶着方
法において、 該第一樹脂部材は第一樹脂と該第一樹脂に分散したレー
ザー光に対して非吸収性の着色料とからなり、該第二樹
脂部材は第二樹脂と該第二樹脂に分散したレーザー光に
対して吸収性の着色料とからなることを特徴とする樹脂
部材のレーザー溶着方法。A first resin member which does not absorb laser light and a second resin member which absorbs laser light are overlapped with each other; Wherein the first resin member comprises a first resin and a colorant that is non-absorbable with respect to laser light dispersed in the first resin. A method for laser welding a resin member, wherein the member comprises a second resin and a colorant that absorbs laser light dispersed in the second resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24697799A JP2001071384A (en) | 1999-09-01 | 1999-09-01 | Laser welding method for resin members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24697799A JP2001071384A (en) | 1999-09-01 | 1999-09-01 | Laser welding method for resin members |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001071384A true JP2001071384A (en) | 2001-03-21 |
Family
ID=17156543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24697799A Pending JP2001071384A (en) | 1999-09-01 | 1999-09-01 | Laser welding method for resin members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001071384A (en) |
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