JP4396823B2 - Resin welding equipment - Google Patents

Resin welding equipment Download PDF

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Publication number
JP4396823B2
JP4396823B2 JP2004056324A JP2004056324A JP4396823B2 JP 4396823 B2 JP4396823 B2 JP 4396823B2 JP 2004056324 A JP2004056324 A JP 2004056324A JP 2004056324 A JP2004056324 A JP 2004056324A JP 4396823 B2 JP4396823 B2 JP 4396823B2
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Japan
Prior art keywords
resin material
laser
laser beam
permeable
hollow portion
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JP2005246633A (en
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洋三 祝
保典 河本
毅 早河
文男 河西
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Denso Corp
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Denso Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—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
    • 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
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1664—Laser beams characterised by the way of heating the interface making use of several radiators
    • 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
    • B29C66/01—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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12443—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue having the tongue substantially in the middle
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • B29C66/12464—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered being V-shaped
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • 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
    • B29C66/14—Particular design of joint configurations particular design of the joint cross-sections the joint having the same thickness as the thickness 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
    • B29C66/50—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
    • B29C66/547—Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes
    • 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
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin welding apparatus capable of applying high load to a resin material and capable of stabilizing the focus position of a laser beam to obtain a joined product in a well joined state. <P>SOLUTION: The resin welding apparatus is constituted so that a transmissive resin material having transmissivity with respect to a laser beam being a heating source and a non-transmissive resin material having no transmissivity with respect to a laser beam are superposed one upon another and the joined parts of the transmissive resin material and the non-transmissive resin material are heated and melted to be integrally bonded, and equipped with a pressing tool for pressing the transmissive resin material and the non-transmissive resin material from the outside in a superposed state not only to form a hollow part but also to closely bond the joined parts and a laser head constituted so as to be movable in the hollow part so as to irradiate the joined parts with the laser beam from the inside of the hollow part. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

本発明は、樹脂溶接装置に関し、詳しくは、重ね合わせた樹脂材の接合面を加熱源としてのレーザ光により加熱溶融させて、両者を一体的に接合する樹脂溶接装置に関する。   The present invention relates to a resin welding apparatus, and more particularly, to a resin welding apparatus that heats and melts a joining surface of superposed resin materials with a laser beam as a heating source and integrally joins them.

近年、軽量化及び低コスト化等の観点より、自動車部品等、各種分野の部品を樹脂化して樹脂成形品とすることが頻繁に行われている。また、樹脂成形品の高生産性化等の観点より、樹脂成形品を予め複数に分割して成形し、これらの分割成形品を互いに接合する手段が採られることが多い。   In recent years, from the viewpoints of weight reduction and cost reduction, it has been frequently performed to resin parts of various fields such as automobile parts to form resin molded products. Further, from the viewpoint of increasing the productivity of resin molded products, it is often the case that a resin molded product is divided into a plurality of parts and molded, and these divided molded products are joined together.

樹脂材同士の接合方法として、従来よりレーザ溶着方法が利用されている。例えば、特許文献１には、レーザ光に対して透過性のある透過性樹脂材と、該レーザ光に対して透過性のない非透過性樹脂材とを重ね合わせた後、該透過性樹脂材側からレーザ光を照射することにより、透過性樹脂材と非透過性樹脂材との接合面を加熱溶融させて両者を一体的に接合するレーザ溶着方法が開示されている。   As a method for joining resin materials, a laser welding method has been conventionally used. For example, in Patent Document 1, a transparent resin material that is transparent to laser light and a non-transparent resin material that is not transparent to the laser light are overlapped, and then the transparent resin material is used. A laser welding method is disclosed in which laser light is irradiated from the side to heat and melt the joint surface between the transmissive resin material and the non-permeable resin material, thereby integrally joining the two.

このレーザ溶着方法では、透過性樹脂材内を透過したレーザ光が非透過性樹脂材の接合面に到達して吸収され、この接合面に吸収されたレーザ光がエネルギーとして蓄積される。その結果、非透過性樹脂材の接合面が加熱溶融されるとともに、この非透過性樹脂材の接合面からの熱伝達により透過性樹脂材の接合面が加熱溶融される。この状態で、透過性樹脂材の接合面及び非透過性樹脂材の接合面同士を圧着させれば、両者を一体的に接合することができる。   In this laser welding method, the laser light transmitted through the transmissive resin material reaches the bonding surface of the non-transmissive resin material and is absorbed, and the laser light absorbed by this bonding surface is accumulated as energy. As a result, the bonding surface of the non-permeable resin material is heated and melted, and the bonding surface of the transparent resin material is heated and melted by heat transfer from the bonding surface of the non-permeable resin material. In this state, if the bonding surface of the permeable resin material and the bonding surface of the non-permeable resin material are pressure-bonded to each other, they can be bonded together.

特開昭６０−２１４９３１号公報JP-A-60-214931 特開平７−１１８７８３号公報Japanese Patent Laid-Open No. 7-118783 特開平８−３９２７７号公報JP-A-8-39277

上記レーザ溶着方法を実現する樹脂溶接装置では、溶接時に治具によって接合部が加圧されるが、例えば図４に示すように、接合部にレーザ光を照射するために、治具が、レーザ光に対して透過性のあるガラスや透明樹脂（ポリカーボネイト、アクリルなど）等の材料から構成されることが多い。しかしながら、このようなガラス等で構成された治具は、樹脂材のソリやヒケ等により接合部に生じる隙間を矯正させる程度の高荷重を加えるには、剛性が十分でない。また、治具を透過するレーザ光が屈折するため、レーザ光の焦点を接合部の位置で安定させることが困難である。これらの要因により、接合品の接合状態が不良となるという問題がある。   In the resin welding apparatus that realizes the laser welding method, the joint is pressurized by a jig during welding. For example, as shown in FIG. 4, in order to irradiate the joint with laser light, the jig is a laser. It is often made of a material such as glass or transparent resin (polycarbonate, acrylic, etc.) that is transparent to light. However, such a jig made of glass or the like does not have sufficient rigidity to apply a high load that corrects a gap generated in the joint due to warping or sinking of the resin material. Further, since the laser beam that passes through the jig is refracted, it is difficult to stabilize the focal point of the laser beam at the position of the joint. Due to these factors, there is a problem that the bonded state of the bonded product becomes defective.

本発明は、上記問題に鑑みてなされたものであり、樹脂材に高荷重を加えること、及びレーザ光の焦点位置を安定させることが可能で、ひいては良好な接合状態の接合品を得ることが可能な樹脂溶接装置を提供することを目的とする。   The present invention has been made in view of the above problems, and can apply a high load to the resin material and stabilize the focal position of the laser beam, and thus obtain a bonded product in a good bonded state. An object of the present invention is to provide a possible resin welding apparatus.

課題を解決するための手段・発明の効果Means for solving the problems / effects of the invention

上記課題を解決するため、本発明の樹脂溶接装置では、
加熱源としてのレーザ光に対して透過性のある透過性樹脂材と、該レーザ光に対して透過性のない非透過性樹脂材とを重ね合わせた後、該レーザ光を照射することにより、該透過性樹脂材と該非透過性樹脂材との接合部を加熱溶融させて両者を一体的に接合する樹脂溶接装置であって、
前記透過性樹脂材及び前記非透過性樹脂材は、筒状体を周方向に分割して形成され、それらを重ね合わせた状態で中空部と複数の接合部を形成するものであり、
前記複数の接合部を密着させるため、前記透過性樹脂材及び前記非透過性樹脂材を外側から押圧する押圧治具と、
前記複数の接合部のそれぞれに対して前記中空部内から前記レーザ光を同時に照射するため、該中空部内を軸方向に移動可能に構成されたレーザヘッドを備えることを特徴とする。
In order to solve the above problems, in the resin welding apparatus of the present invention,
By superposing a transparent resin material that is transparent to laser light as a heating source and a non-transmissive resin material that is not transparent to the laser light, and then irradiating the laser light, A resin welding device that heats and melts a joint between the permeable resin material and the non-permeable resin material and integrally joins the two,
The permeable resin material and the non-permeable resin material are formed by dividing a cylindrical body in the circumferential direction, and form a hollow portion and a plurality of joint portions in a state in which they are overlapped,
A pressing jig for pressing the permeable resin material and the non-permeable resin material from the outside in order to bring the plurality of joints into close contact;
In order to simultaneously irradiate each of the plurality of joints with the laser beam from the inside of the hollow portion, a laser head configured to be movable in the axial direction within the hollow portion is provided.

上記本発明によると、重ね合わせた状態で中空部を形成する透過性樹脂材及び非透過性樹脂材に対し、外側から押圧治具によって押圧した状態で、中空部内からレーザ光を接合部に照射する。このように構成することで、樹脂材が有するソリやヒケ等によって接合部に生じる隙間を良好に矯正することが可能であるとともに、レーザ光を接合部に直接照射することができるため、レーザ光の焦点位置を安定させ易くなる。これによって、良好な接合状態の接合品を得ることが可能となる。さらには、中空部内からレーザ光を照射することから、接合品の外側表面における樹脂バリの発生を抑制することが可能となる。   According to the present invention, a laser beam is irradiated from the inside of the hollow portion to the permeable resin material and the non-permeable resin material that form the hollow portion in a stacked state while being pressed from the outside by a pressing jig. To do. With this configuration, it is possible to satisfactorily correct the gap generated in the joint due to warpage or sink marks of the resin material, and it is possible to directly irradiate the joint with laser light. It becomes easy to stabilize the focal position of the. This makes it possible to obtain a bonded product in a good bonded state. Furthermore, since the laser beam is irradiated from the inside of the hollow portion, it is possible to suppress the occurrence of resin burrs on the outer surface of the joined product.

以下、本発明の実施の形態を図に基づいて説明する。図１は、本発明に係る樹脂溶接装置１の概略構成図である。樹脂溶接装置１は、重ね合わせた状態、すなわち接合されるべき状態で中空部ＨＬを形成する透過性樹脂材Ａと非透過性樹脂材Ｂとを溶接するために、２つの樹脂材Ａ，Ｂを外側から押圧して接合部ＣＰを密着させる押圧治具３と、中空部ＨＬ内を移動可能に構成され、中空部ＨＬ内から接合部ＣＰに対してレーザ光ＬＢを照射するレーザヘッド５と、を備える。なお、透過性樹脂材Ａ及び非透過性樹脂材Ｂの外側とは、中空部ＨＬを内側として、それに対する外側を意味する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a resin welding apparatus 1 according to the present invention. In order to weld the permeable resin material A and the non-permeable resin material B that form the hollow portion HL in a superposed state, that is, a state to be joined, the resin welding apparatus 1 has two resin materials A and B. A pressing jig 3 that presses the outer portion from the outside to closely contact the joint portion CP, and a laser head 5 that is configured to be movable in the hollow portion HL and that irradiates the joint portion CP with the laser beam LB from the hollow portion HL; . In addition, the outer side of the permeable resin material A and the non-permeable resin material B means the outer side with respect to the hollow portion HL as the inner side.

上記樹脂溶接装置１を用いて、透過性樹脂材Ａと非透過性樹脂材Ｂとを溶接する工程は、以下の通りである。２つの樹脂材Ａ，Ｂは、接合部ＣＰを密着させるように外側から押圧治具３により押圧され、その状態で、中空部ＨＬ内に配されたレーザヘッド５から加熱源としてのレーザ光ＬＢが照射される。照射されたレーザ光ＬＢは透過性樹脂材Ａ内を透過して非透過性樹脂材Ｂ側の接合部ＣＰに到達し、吸収される。この非透過性樹脂材Ｂ側の接合部ＣＰに吸収されたレーザ光ＬＢがエネルギーとして蓄積される結果、非透過性樹脂材Ｂ側の接合部ＣＰが加熱溶融されるとともに、この非透過性樹脂材Ｂ側の接合部ＣＰからの熱伝達により透過性樹脂材Ａ側の接合部ＣＰが加熱溶融される。これによって、両者を一体的に接合することができる。   The process of welding the permeable resin material A and the non-permeable resin material B using the resin welding apparatus 1 is as follows. The two resin materials A and B are pressed by the pressing jig 3 from the outside so as to bring the bonding portion CP into close contact, and in this state, the laser light LB as a heating source from the laser head 5 disposed in the hollow portion HL. Is irradiated. The irradiated laser beam LB passes through the transmissive resin material A, reaches the joint CP on the non-transmissive resin material B side, and is absorbed. As a result of the laser light LB absorbed in the joint CP on the non-permeable resin material B side being accumulated as energy, the joint CP on the non-permeable resin material B side is heated and melted, and the non-permeable resin By the heat transfer from the joint portion CP on the material B side, the joint portion CP on the transparent resin material A side is heated and melted. Thereby, both can be joined integrally.

上記樹脂溶接装置１では、透過性樹脂材Ａと非透過性樹脂材Ｂとが形成する中空部ＨＬ内から接合部ＣＰに対してレーザ光ＬＢの照射を行うため、これらの樹脂材Ａ，Ｂを外側で押圧する押圧治具３の材質は何ら限定されることはない。すなわち、押圧治具３は、レーザ光ＬＢを透過させることがないため、ガラスや透明樹脂（ポリカーボネイト、アクリルなど）等の材料を用いる必要はなく、剛性の高い材料（例えば、ガラス材料よりも剛性の高い材料）にて構成することができる。これにより、樹脂材Ａ，Ｂが有するソリやヒケ等によって接合部ＣＰに隙間が生じる場合であっても、押圧治具３に高荷重を加えることができ、そのような隙間を矯正して溶接を行うことが可能となる。また、治具等を透過させずにレーザ光ＬＢを接合部ＣＰに照射することが可能であるため、レーザ光ＬＢの焦点位置を安定させ易いという利点もある。さらには、接合部ＣＰに対して中空部ＨＬ内からレーザ光ＬＢを照射することから、接合品（接合後の樹脂材Ａ，Ｂ）の外側表面における樹脂バリの発生を抑制することが可能となる。   In the resin welding apparatus 1, since the laser beam LB is irradiated to the joint portion CP from the inside of the hollow portion HL formed by the permeable resin material A and the non-permeable resin material B, these resin materials A, B The material of the pressing jig 3 that presses the outside is not limited. That is, since the pressing jig 3 does not transmit the laser beam LB, it is not necessary to use a material such as glass or transparent resin (polycarbonate, acrylic, etc.), and a material having higher rigidity (for example, a material that is more rigid than a glass material). High material). As a result, even when a gap occurs in the joint CP due to warpage or sink marks of the resin materials A and B, a high load can be applied to the pressing jig 3, and the gap is corrected and welded. Can be performed. In addition, since it is possible to irradiate the joint CP with the laser beam LB without passing through a jig or the like, there is also an advantage that the focal position of the laser beam LB can be easily stabilized. Furthermore, since the laser beam LB is irradiated from the hollow portion HL to the joint portion CP, it is possible to suppress the occurrence of resin burrs on the outer surface of the joined product (resin materials A and B after joining). Become.

上記透過性樹脂材Ａの種類としては、熱可塑性を有し、加熱源としてのレーザ光ＬＢを所定の透過率以上で透過させ得るものであれば特には限定されない。例えば、ナイロン６（ＰＡ６）やナイロン６，６（ＰＡ６６）等のポリアミド（ＰＡ）、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、スチレン−アクリロニトリル共重合体、ポリカーボネート（ＰＣ）、ＡＢＳ樹脂、ポリブチレンテレフタレート（ＰＢＴ）、ポリフェニレンサルファイド（ＰＰＳ）、ポリエチレンテレフタレート（ＰＥＴ）、ポリスチレン、アクリル（ＰＭＭＥ）等を挙げることができる。なお、必要に応じて、ガラス繊維、カーボン繊維等の補強繊維を添加したものを用いてもよい。   The kind of the transmissive resin material A is not particularly limited as long as it has thermoplasticity and can transmit the laser beam LB as a heating source at a predetermined transmittance or more. For example, polyamide (PA) such as nylon 6 (PA6) and nylon 6,6 (PA66), polyethylene (PE), polypropylene (PP), styrene-acrylonitrile copolymer, polycarbonate (PC), ABS resin, polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polyethylene terephthalate (PET), polystyrene, acrylic (PMME), and the like. In addition, you may use what added reinforcement fibers, such as glass fiber and carbon fiber, as needed.

上記非透過性樹脂材Ｂの種類としては、熱可塑性を有し、加熱源としてのレーザ光ＬＢを透過させずに吸収しうるものであれば特に限定されない。例えば、上記透過性樹脂に、カーボンブラック、染料や顔料等の所定の着色材（レーザ吸収性を有する着色剤）を混入したものを挙げることができる。そのような着色剤としては、具体的には、カーボンブラック等の炭素系材料、複合酸化物系顔料等の無機系着色料を用いることができる。なお、透過性樹脂材に、レーザを透過する着色剤を添加しても良い。そのような着色剤として、例えば、アンスラキノン系、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等がある。また、必要に応じて、ガラス繊維やカーボン繊維等の補強繊維を添加したものを用いてもよい。なお、本明細書でいうレーザの透過性及び非透過性は、相対的なものに過ぎないことを断っておく。   The type of the non-permeable resin material B is not particularly limited as long as it has thermoplasticity and can absorb the laser beam LB as a heating source without transmitting it. For example, what mixed predetermined | prescribed coloring materials (coloring agent which has laser absorptivity), such as carbon black, dye, and a pigment, can be mentioned to the said transparent resin. Specific examples of such a colorant include carbon-based materials such as carbon black and inorganic colorants such as composite oxide pigments. Note that a colorant that transmits laser may be added to the transparent resin material. Examples of such a colorant include organic dyes such as anthraquinone, perylene, perinone, heterocyclic, disazo, and monoazo. Moreover, you may use what added reinforcement fibers, such as glass fiber and carbon fiber, as needed. It should be noted that the laser transmission and non-transmission in this specification are only relative.

透過性樹脂材Ａ及び非透過性樹脂材Ｂは、重ね合わせた状態、すなわち接合されるべき状態で中空部ＨＬを形成する。また、後述するレーザヘッド５を中空部ＨＬ内に挿入させることが可能な挿入部分を有する。例えば、透過性樹脂材Ａ及び非透過性樹脂材Ｂを、重ね合わせた状態で少なくとも一端が開放された中空形状となるようにすることができる。図２は、図１の樹脂溶接装置１の斜視図（押圧治具３を破線で示している）である。なお、図の透過性樹脂材Ａ及び非透過性樹脂材Ｂは、重ね合わせた状態で、両端が開放された中空形状（筒状）となっている。   The permeable resin material A and the non-permeable resin material B form the hollow portion HL in an overlapped state, that is, a state to be joined. Moreover, it has the insertion part which can insert the laser head 5 mentioned later into the hollow part HL. For example, the permeable resin material A and the non-permeable resin material B can be made to have a hollow shape in which at least one end is opened in an overlapped state. FIG. 2 is a perspective view of the resin welding apparatus 1 of FIG. 1 (the pressing jig 3 is indicated by a broken line). In addition, the permeable resin material A and the non-permeable resin material B shown in the figure have a hollow shape (cylindrical shape) in which both ends are opened in an overlapped state.

透過性樹脂材Ａと非透過性樹脂材Ｂとが接合される接合部ＣＰの形態としては、例えば図１に示すように、互い違いとなるように厚さを減じたそれぞれの端部を突き合わせた接合形態とすることができる。このような接合形態とすることで、接触面積を確保することができる。なお、この場合、レーザ光ＬＢは中空部ＨＬ内から照射されるので、接合部ＣＰは、内側を透過性樹脂材Ａ、外側を非透過性樹脂材Ｂとする。また、例えば図３に示すように、一方の端面に突起部を設け、他方の端面を該突起部と嵌合する形状、若しくは該突起部を食い込ませる平坦な形状として、両者を突き合わせた接合形態とすることもできる。樹脂材Ａ，Ｂは、それぞれ接合端を突き合わせる方向（図中の方向Ｐ）に押圧されるので、このような接合形態は、接合部ＣＰに生じる隙間を矯正しやすいという利点がある。なお、この場合、突起部にレーザ光ＬＢを照射するため、非透過性樹脂材Ｂ側の端面に突起部を設ける。   As the form of the joint portion CP where the permeable resin material A and the non-permeable resin material B are joined, for example, as shown in FIG. It can be set as a joining form. By setting it as such a joining form, a contact area is securable. In this case, since the laser beam LB is irradiated from the inside of the hollow portion HL, the bonding portion CP has a transparent resin material A on the inside and a non-permeable resin material B on the outside. Further, as shown in FIG. 3, for example, a protrusion is provided on one end face, and the other end face is fitted to the protrusion, or a flat shape to bite the protrusion, and the two are joined together. It can also be. Since the resin materials A and B are pressed in the direction in which the joining ends are abutted (direction P in the drawing), such a joining form has an advantage that it is easy to correct a gap generated in the joining portion CP. In this case, in order to irradiate the projecting portion with the laser beam LB, the projecting portion is provided on the end surface on the non-transparent resin material B side.

透過性樹脂材Ａ及び非透過性樹脂材Ｂは、押圧治具３によって外側から押圧されて、接合部ＣＰが密着させられる。詳しくは、押圧治具３は、透過性樹脂材Ａの外側表面を保持して押圧する第一押圧部材３１と、非透過性樹脂材Ｂの外側表面を保持して押圧する第二押圧部材３２とを有する。そして、それぞれの押圧部材３１，３２に対し、樹脂材Ａ，Ｂの接合端を突き合わせる方向（図中の方向Ｐ）に荷重を加えることによって、樹脂材Ａ，Ｂを押圧し、接合部ＣＰに生じる隙間を矯正する。また、押圧治具３は、後述するレーザヘッド５を中空部ＨＬ内に挿入させるため、樹脂材Ａ，Ｂが有する上述の挿入部分を露出させる形状とされている。なお、レーザ光ＬＢの照射は中空体ＨＬ内より行われるため、押圧治具３には、ガラス材料等を用いる必要はなく、接合部ＣＰに生じる隙間を矯正させる程度の高荷重を加えることが可能な高剛性の材料を用いることができる。具体的には、押圧治具３は、ガラス材料よりも剛性の高い材料、例えば金属等にて構成することができる。または、ガラス材料等を従来よりも厚くした押圧治具３を用いることも可能である。従来の樹脂溶接装置（図４参照）では、高荷重を加えるために治具３０を厚くした場合、治具３０を透過するレーザ光ＬＢの屈折により、レーザ光ＬＢの焦点位置を接合部ＣＰに安定させることが大変困難となる。しかしながら、本発明の樹脂溶接装置１では、中空体ＨＬ内から接合部ＣＰにレーザ光ＬＢを照射するため、押圧治具３の厚さに関しても何ら限定されることはない。   The permeable resin material A and the non-permeable resin material B are pressed from the outside by the pressing jig 3 so that the joint portion CP is brought into close contact therewith. Specifically, the pressing jig 3 holds the first pressing member 31 that holds and presses the outer surface of the permeable resin material A, and the second pressing member 32 that holds and presses the outer surface of the non-permeable resin material B. And have. Then, by applying a load in the direction in which the joining ends of the resin materials A and B are abutted against the respective pressing members 31 and 32 (direction P in the drawing), the resin materials A and B are pressed, and the joint portion CP is obtained. Correct gaps that occur in The pressing jig 3 has a shape that exposes the above-described insertion portions of the resin materials A and B in order to insert a laser head 5 to be described later into the hollow portion HL. Since the irradiation with the laser beam LB is performed from the inside of the hollow body HL, it is not necessary to use a glass material or the like for the pressing jig 3, and it is possible to apply a high load enough to correct the gap generated in the joint CP. Possible high rigidity materials can be used. Specifically, the pressing jig 3 can be made of a material having higher rigidity than the glass material, such as a metal. Alternatively, it is possible to use a pressing jig 3 in which a glass material or the like is made thicker than before. In the conventional resin welding apparatus (see FIG. 4), when the jig 30 is thickened to apply a high load, the refraction of the laser light LB that passes through the jig 30 causes the focal position of the laser light LB to reach the joint CP. It becomes very difficult to stabilize. However, in the resin welding apparatus 1 of the present invention, the laser beam LB is irradiated from the inside of the hollow body HL to the joint portion CP, and therefore the thickness of the pressing jig 3 is not limited at all.

レーザヘッド５から照射される加熱源としてのレーザ光ＬＢの種類としては、レーザ光を透過させる透過性樹脂材Ａの吸収スペクトルや肉厚（レーザ光の透過距離）等との関係で、透過性樹脂材Ａ内での透過率が所定値以上となるような波長を有するものが適宜選定される。例えば、ＹＡＧ：Ｎｄ３＋レーザ（レーザ光の波長：１０６０ｎｍ）や半導体（ダイオード）レーザ（レーザ光の波長：５００〜１０００ｎｍ）を用いることができる。なお、レーザの出力、焦点位置、溶着幅や加工速度（移動速度）等の照射条件は、透過性樹脂材Ａ及び非透過性樹脂材Ｂの種類等に応じて適宜設定可能である。 The kind of the laser beam LB as a heating source irradiated from the laser head 5 is transmissive according to the absorption spectrum, thickness (laser beam transmission distance), etc. of the transmissive resin material A that transmits the laser beam. A material having a wavelength such that the transmittance in the resin material A is a predetermined value or more is appropriately selected. For example, a YAG: Nd 3+ laser (laser light wavelength: 1060 nm) or a semiconductor (diode) laser (laser light wavelength: 500 to 1000 nm) can be used. Irradiation conditions such as laser output, focal position, welding width and processing speed (moving speed) can be set as appropriate according to the type of transmissive resin material A and non-permeable resin material B.

上記レーザヘッド５は、例えば、レーザ発生器で発生したレーザ光ＬＢを、光ファイバーを通し、レンズで集光して、接合部ＣＰに向かって照射するものとすることができる。若しくは、励起光を光ファイバー内で増幅させるファイバーレーザを用いることもできる。このような引き回しが容易なファイバーを用いた形態は、レーザヘッド５を中空部ＨＬ内で移動可能に構成するのに好適である。   For example, the laser head 5 may be configured to irradiate the laser beam LB generated by the laser generator through the optical fiber, collect the light with a lens, and irradiate the joint CP. Alternatively, a fiber laser that amplifies the excitation light in the optical fiber can be used. Such a configuration using a fiber that can be easily routed is suitable for configuring the laser head 5 to be movable in the hollow portion HL.

レーザ光ＬＢの出力は、例えば、数〜数数百Ｗとすることができる。溶着幅は絞りにより変更できるが、通常は１〜５ｍｍとすることができる。レーザの焦点位置は、接合部ＣＰに合わせると良い。また、接合部ＣＰより非透過性樹脂材Ｂ側の深い位置にその焦点を合わせても良い。なお、その焦点位置の調整により、溶着幅の制御をも行い得る。   The output of the laser beam LB can be set to several to several hundreds W, for example. Although the welding width can be changed by drawing, it can usually be set to 1 to 5 mm. The focal position of the laser is preferably adjusted to the junction CP. Further, the focus may be adjusted to a position deeper on the non-permeable resin material B side than the joint portion CP. The welding width can also be controlled by adjusting the focal position.

レーザヘッド５を中空部ＨＬ内にて移動可能に構成するには、レーザヘッド５を、例えば、中空部ＨＬ内に挿入された周知の内視鏡に配設することで実現できる。内視鏡は、挿入部分を中空部ＨＬ内で自在に移動させることが可能であるため、レーザ光ＬＢの照射を全ての接合部ＣＰに渡って行うことができる。また、観察窓を有することから、該観察窓から得られる中空部ＨＬ内の画像によって接合部ＣＰの位置を確認し、それに基づいてレーザ光ＬＢの照射位置を合わせることも可能である。また、予め入力されたプログラムに従ってレーザヘッド５を移動させるようにすることも可能である。また、溶接中にはガス等の異物が発生するので、そのような異物からレーザヘッド５を保護するために、レーザヘッド５を覆う保護ガラスや、異物を吸引する吸引手段等を設けることもできる。   In order to configure the laser head 5 to be movable in the hollow portion HL, the laser head 5 can be realized, for example, by disposing it in a known endoscope inserted in the hollow portion HL. Since the endoscope can freely move the insertion portion within the hollow portion HL, the laser beam LB can be irradiated over all the joint portions CP. Moreover, since it has an observation window, it is also possible to confirm the position of the joint portion CP by an image in the hollow portion HL obtained from the observation window, and to adjust the irradiation position of the laser beam LB based on the position. It is also possible to move the laser head 5 in accordance with a program input in advance. Further, since foreign matter such as gas is generated during welding, in order to protect the laser head 5 from such foreign matter, a protective glass covering the laser head 5, a suction means for sucking the foreign matter, or the like can be provided. .

レーザヘッド５は、図１及び２に示すよう、複数のレーザ光ＬＢを照射するように構成することができる。２つの樹脂材Ａ，Ｂが中空部ＨＬを形成する場合、接合部ＣＰは複数存在するので（例えば、図のように中空部ＨＬの両端に）、そのそれぞれにレーザ光ＬＢを照射するように構成することができる。例えば、本実施形態では、図２に示すように、筒状の２つの樹脂材Ａ，Ｂの軸方向にレーザヘッド５を移動させ、該軸方向と直行する方向へレーザ光ＬＢを照射している。   The laser head 5 can be configured to irradiate a plurality of laser beams LB as shown in FIGS. When the two resin materials A and B form the hollow portion HL, there are a plurality of joint portions CP (for example, at both ends of the hollow portion HL as shown in the figure), so that each of them is irradiated with the laser beam LB. Can be configured. For example, in this embodiment, as shown in FIG. 2, the laser head 5 is moved in the axial direction of two cylindrical resin materials A and B, and the laser beam LB is irradiated in a direction perpendicular to the axial direction. Yes.

以上、本発明の実施形態を示したが、これはあくまで例示であり、本発明は、その趣旨を逸脱しない範囲で、当事者の知識に基づき種々の改良ないし変形を加えた態様でも実施可能であることはいうまでもない。   As mentioned above, although embodiment of this invention was shown, this is an illustration to the last, and this invention can be implemented also in the aspect which added the various improvement thru | or deformation | transformation based on the knowledge of the party within the range which does not deviate from the meaning. Needless to say.

本発明に係る樹脂溶接装置１の概略構成図Schematic configuration diagram of a resin welding apparatus 1 according to the present invention 本発明に係る樹脂溶接装置１を立体的に表した概略構成図The schematic block diagram which represented the resin welding apparatus 1 which concerns on this invention in three dimensions 本発明に係る樹脂溶接装置１の概略構成図Schematic configuration diagram of a resin welding apparatus 1 according to the present invention 従来の樹脂溶接装置１０の概略構成図Schematic configuration diagram of a conventional resin welding apparatus 10

符号の説明Explanation of symbols

１ 樹脂溶接装置
３ 押圧治具
５ レーザヘッド
７ 内視鏡
Ａ 透過性樹脂材
Ｂ 非透過性樹脂材
ＣＰ 接合部
ＬＢ レーザ光 DESCRIPTION OF SYMBOLS 1 Resin welding apparatus 3 Pressing jig 5 Laser head 7 Endoscope A Transparent resin material B Non-permeable resin material CP Joint part LB Laser beam

Claims (3)

加熱源としてのレーザ光に対して透過性のある透過性樹脂材と、該レーザ光に対して透過性のない非透過性樹脂材とを重ね合わせた後、該レーザ光を照射することにより、該透過性樹脂材と該非透過性樹脂材との接合部を加熱溶融させて両者を一体的に接合する樹脂溶接装置であって、
前記透過性樹脂材及び前記非透過性樹脂材は、筒状体を周方向に分割して形成され、それらを重ね合わせた状態で中空部と複数の接合部を形成するものであり、
前記複数の接合部を密着させるため、前記透過性樹脂材及び前記非透過性樹脂材を外側から押圧する押圧治具と、
前記複数の接合部のそれぞれに対して前記中空部内から前記レーザ光を同時に照射するため、該中空部内を軸方向に移動可能に構成されたレーザヘッドを備えることを特徴とする樹脂溶接装置。 By superposing a transparent resin material that is transparent to laser light as a heating source and a non-transmissive resin material that is not transparent to the laser light, and then irradiating the laser light, A resin welding device that heats and melts a joint between the permeable resin material and the non-permeable resin material and integrally joins the two,
The permeable resin material and the non-permeable resin material are formed by dividing a cylindrical body in the circumferential direction, and form a hollow portion and a plurality of joint portions in a state in which they are overlapped,
A pressing jig for pressing the permeable resin material and the non-permeable resin material from the outside in order to bring the plurality of joints into close contact;
A resin welding apparatus comprising: a laser head configured to be movable in the axial direction in the hollow portion in order to simultaneously irradiate each of the plurality of joint portions with the laser light from the hollow portion. 前記押圧治具は、ガラス材料よりも剛性の高い材料にて構成されてなることを特徴とする請求項１に記載の樹脂溶接装置。   The resin welding apparatus according to claim 1, wherein the pressing jig is made of a material having higher rigidity than a glass material. 前記レーザヘッドは、前記中空部内に挿入された内視鏡に配設されてなることを特徴とする請求項１または２に記載の樹脂溶接装置。   The resin welding apparatus according to claim 1 or 2, wherein the laser head is disposed in an endoscope inserted into the hollow portion.
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