JP2003225946A - Laser bonding method and laser bonding device - Google Patents

Laser bonding method and laser bonding device

Info

Publication number
JP2003225946A
JP2003225946A JP2002024982A JP2002024982A JP2003225946A JP 2003225946 A JP2003225946 A JP 2003225946A JP 2002024982 A JP2002024982 A JP 2002024982A JP 2002024982 A JP2002024982 A JP 2002024982A JP 2003225946 A JP2003225946 A JP 2003225946A
Authority
JP
Japan
Prior art keywords
laser
joint
bonded
pressing
pressing jig
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002024982A
Other languages
Japanese (ja)
Inventor
Yasunori Kawamoto
保典 河本
Fumio Kasai
文男 河西
Yozo Iwai
洋三 祝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Priority to JP2002024982A priority Critical patent/JP2003225946A/en
Publication of JP2003225946A publication Critical patent/JP2003225946A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/169—Laser beams making use of light guides being a part of the joined article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/1635—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
    • B29C65/1638—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 focusing the laser beam on the interface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/8122—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 composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/863—Robotised, e.g. mounted on a robot arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91216—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods enabling contactless temperature measurements, e.g. using a pyrometer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91221—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—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
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—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
    • B29C66/45—Joining of substantially the whole surface of the 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
    • B29C66/71—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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7377—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73771—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being amorphous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7377—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73775—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being crystalline
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29K2909/00—Use of inorganic materials not provided for in groups B29K2803/00 - B29K2807/00, as mould material
    • B29K2909/08—Glass

Landscapes

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laser bonding method by which stable bonding can be achieved. <P>SOLUTION: This laser bonding method comprises a pressing step to press a joining component (11) which allows transmission of a laser beam to a component to be joined (12), using a pressing fixture (13), from right above the vicinity of a joining part (B) to be irradiated with a laser beam (L) and an irradiation step to irradiate the joining part (B) between the joining component (11) and the component to be joined (12) with a laser beam from the oblique side of the pressing fixture (13) under such a state that the joining component (11) and the component to be joined (12) are made to tightly adhere to each other in the pressing step. As the irradiation with the laser beam from the oblique side of the pressing fixture (13) can be achieved, it is possible to appropriately irradiate the joining part (B) with the laser beam, without being adversely affected by the contamination or the like of the pressing fixture (13). <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、レーザにより樹脂
部材を溶着等させるレーザ接着方法およびそれに用いら
れるレーザ接着装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser bonding method for welding resin members with a laser and a laser bonding apparatus used for the same.

【０００２】[0002]

【従来の技術】一体成形の困難な製品を製作したり容器
の密閉等を行う場合に、複数部材の接合が必要となる。
そして、接合強度の確保や低コスト化の観点から、ボル
ト、ナット等の締結具を使用しない、溶接や溶着等の接
着が行われることが多い。金属部材間の溶接はよく知ら
れているが、最近では、樹脂部材間の溶着が注目されて
いる。この樹脂部材間の溶着には、例えば、摩擦溶着と
レーザ溶着とがある。いずれも接合部を加熱溶融させて
溶着させる点で共通する。しかし、摩擦溶着は、摩擦熱
を利用するため、接合部材を密着させつつ相対運動させ
ることが必要となる。このため、両部材間の接合位置精
度を確保し難い。2. Description of the Related Art It is necessary to join a plurality of members when manufacturing a product which is difficult to integrally mold or sealing a container.
From the viewpoint of securing the joint strength and reducing the cost, bonding such as welding and welding is often performed without using fasteners such as bolts and nuts. Welding between metal members is well known, but recently, welding between resin members has attracted attention. The welding between the resin members includes, for example, friction welding and laser welding. All of them are common in that the joint is heated and melted to be welded. However, since friction welding uses frictional heat, it is necessary to move the joining members in close contact with each other. Therefore, it is difficult to ensure the accuracy of the joint position between the two members.

【０００３】これに対し、レーザ溶着の場合は、接合位
置精度を確保した状態で溶着させることができるため、
このような欠点がない。さらに、レーザ溶着の場合、接
合部へのレーザ照射が可能である限り、部材形状による
制約を受けず、接合自由度が大きいという利点を有す
る。このようなレーザ溶着方法に関して、例えば、特開
昭６０−２１４９３１号公報や特開昭６２−１４２０９
２号公報にその開示がある。いずれの場合も、レーザを
透過する透過性樹脂部材の直上から、レーザを吸収する
吸収性樹脂部材へ向けてレーザを照射し、両者の界面付
近で発熱、溶融させて、溶着させるものである。On the other hand, in the case of laser welding, the welding can be performed in a state where the accuracy of the joining position is ensured.
There are no such drawbacks. Further, in the case of laser welding, there is an advantage that the degree of freedom in joining is large without being restricted by the shape of the member as long as laser irradiation can be performed on the joining portion. Regarding such a laser welding method, for example, JP-A-60-214931 and JP-A-62-142009.
The disclosure is disclosed in Japanese Patent No. 2 publication. In either case, the laser is irradiated from directly above the transparent resin member that transmits the laser toward the absorptive resin member that absorbs the laser, and heat is generated and melted in the vicinity of the interface between the two to cause the welding.

【０００４】ここで、安定的に溶着を行うためには、そ
の接合部で両樹脂部材が確実に密着していることが望ま
れる。そのため、例えば、前記特開昭６２−１４２０９
２号公報では、図５に示すように、レーザ（Ｌ）を透過
するガラス板（５３：押圧治具）を用いて、透過性樹脂
部材（５１）を吸収性樹脂部材（５２）に押しつけつ
つ、そのガラス板越しに接合部（Ｂ）へレーザを照射し
て、溶着を行っている。Here, in order to perform stable welding, it is desired that both resin members are firmly adhered to each other at their joints. Therefore, for example, the above-mentioned Japanese Patent Laid-Open No. 62-14209.
In the publication No. 2, as shown in FIG. 5, a transparent resin member (51) is pressed against the absorptive resin member (52) using a glass plate (53: pressing jig) that transmits a laser (L). The welding is performed by irradiating the joint portion (B) with a laser through the glass plate.

【０００５】[0005]

【発明が解決しようとする課題】しかし、そのような押
圧治具越しにレーザを照射すると、押圧治具の汚れ等に
よりレーザが遮られ、効率的な溶着が妨げられ得る。ま
た、それを回避しようとすると、押圧治具の定期的な交
換や洗浄が別途必要となり、生産性の向上や低コスト化
が妨げられる。また、接合部を密着させる方法として、
接合部（Ｂ）の直上付近を押圧治具で直接的に押圧せ
ず、図６に示すように、その接合部の周囲を押圧治具
（６３）で間接的に押圧する方法も考えられる。こうし
て、接合部の直上からレーザ（Ｌ）を透過性樹脂部材
（６１）に向けて直接照射すれば、押圧治具によってレ
ーザが遮られるという問題は生じない。However, if the laser is irradiated through such a pressing jig, the laser may be blocked by stains on the pressing jig and the efficient welding may be hindered. Further, if it is attempted to avoid this, periodical replacement and cleaning of the pressing jig are separately required, which hinders improvement in productivity and cost reduction. In addition, as a method of bringing the joints into close contact,
A method in which the vicinity of the joint (B) is not directly pressed by the pressing jig but the periphery of the joint is indirectly pressed by the pressing jig (63) as shown in FIG. 6 is also conceivable. Thus, if the laser (L) is directly applied to the transparent resin member (61) from directly above the joining portion, the problem that the laser is blocked by the pressing jig does not occur.

【０００６】しかし、このような押圧方法では、接合部
を確実に密着させることが難しい。特に、剛性の低い樹
脂部材（例えば、樹脂の薄板）等を溶着する場合、接合
部が逆に浮き上がってしまい、安定した溶着を行い得な
い。本発明は、このような事情に鑑みて為されたもので
ある。つまり、接合部材間の接合部を確実に密着させつ
つ、安定した溶着等の接着を行なえるようにした、レー
ザ接着方法およびそれに適したレーザ接着装置を提供す
ることを目的とする。However, with such a pressing method, it is difficult to firmly bring the joint portion into close contact. In particular, when a resin member having low rigidity (for example, a thin resin plate) is welded, the joint part is lifted up, and stable welding cannot be performed. The present invention has been made in view of such circumstances. That is, it is an object of the present invention to provide a laser bonding method and a laser bonding apparatus suitable for the same, which are capable of performing stable bonding such as welding while reliably bonding the bonding portions between the bonding members.

【０００７】[0007]

【課題を解決するための手段】そこで、本発明者はこの
課題を解決すべく鋭意研究し、試行錯誤を重ねた結果、
レーザを押圧治具の斜め側方から照射することを思いつ
き、本発明を完成するに至った。 （レーザ接着方法）すなわち、本発明のレーザ接着方法
は、レーザを透過する接合体と該接合体が接合される被
接合体との間の接合部へ該接合体側から該レーザを照射
することにより、該接合部を加熱して該接合体と該被接
合体とを接着するレーザ接着方法において、前記レーザ
の照射される接合部近傍の直上から押圧治具により前記
接合体を前記被接合体へ押圧する押圧工程と、該押圧工
程により該接合部で該接合体と該被接合体とを密着させ
た状態で該押圧治具の斜め側方から該接合部へ前記レー
ザを照射する照射工程と、を備えることを特徴とする。
本発明のレーザ接着方法によれば、先ず、押圧工程で、
押圧治具により接合部近傍の直上から接合体を被接合体
に押圧する。これにより、接合体と被接合体とは、少な
くともその接合部で、確実に密着するようになる。Therefore, the present inventor has diligently studied to solve this problem, and as a result of repeated trial and error,
The present invention was completed by conceiving to irradiate the laser from an oblique side of the pressing jig. (Laser Bonding Method) That is, the laser bonding method of the present invention is to irradiate the laser beam from the side of the bonded body to the bonded portion between the laser-transmitted bonded body and the bonded body to which the bonded body is bonded. In the laser bonding method of heating the bonded portion and bonding the bonded body and the bonded body together, the bonded body is bonded to the bonded body by a pressing jig from immediately above the vicinity of the bonded area irradiated with the laser. A pressing step of pressing, and an irradiation step of irradiating the bonding portion from the oblique side of the pressing jig in a state where the bonding body and the body to be bonded are brought into close contact with each other at the bonding portion by the pressing step. , Are provided.
According to the laser bonding method of the present invention, first, in the pressing step,
The joint is pressed against the body to be joined from directly above the vicinity of the joint by the pressing jig. As a result, the joined body and the body to be joined are surely brought into close contact with each other at least at the joined portion.

【０００８】次に、照射工程では、その接合部における
密着性を保持した状態で、レーザを押圧治具の斜め側方
からその接合部に照射する。このため、レーザは、基本
的に押圧治具によって遮られることなく、押圧治具の汚
れ等の影響も受けないで、接合部に確実に到達する。そ
して、密着した接合部が確実に加熱されるようになる。
その結果、押圧治具の交換や洗浄等なしに、安定したレ
ーザ接着を行え、品質向上、歩留まり向上、生産性の向
上、低コスト化等の多くのメリットが得られる。Next, in the irradiation step, while maintaining the adhesiveness at the joint, the laser is irradiated to the joint from an oblique side of the pressing jig. Therefore, the laser is basically not blocked by the pressing jig, is not affected by the dirt of the pressing jig, and reliably reaches the joining portion. Then, the closely bonded joints are surely heated.
As a result, stable laser bonding can be performed without replacing the pressing jig or cleaning, and many advantages such as quality improvement, yield improvement, productivity improvement, and cost reduction can be obtained.

【０００９】（レーザ接着装置）本発明は、レーザ接着
方法以外にも、レーザ接着装置としても把握できる。す
なわち、本発明は、レーザを透過する接合体と該接合体
が接合される被接合体との間の接合部へ該接合体側から
該レーザを照射することにより、該接合部を加熱して該
接合体と該被接合体とを接着させるレーザ接着装置にお
いて、前記レーザの照射される接合部近傍の直上から押
圧治具により前記接合体を前記被接合体へ押圧する押圧
手段と、該押圧手段により該接合部で該接合体と該被接
合体とを密着させた状態で該押圧治具の斜め側方から該
接合部へ前記レーザを照射するレーザ照射手段と、を備
えることを特徴とするレーザ接着装置としても良い。(Laser Bonding Device) The present invention can be understood as a laser bonding device other than the laser bonding method. That is, the present invention irradiates the laser beam from the side of the bonded body to the bonded portion between the bonded body that transmits the laser and the bonded body to which the bonded body is bonded, thereby heating the bonded section and In a laser bonding apparatus for bonding a bonded body and the bonded body, a pressing unit that presses the bonded body against the bonded body with a pressing jig from immediately above a bonding portion irradiated with the laser, and the pressing unit. Laser irradiation means for irradiating the laser to the joint from an oblique side of the pressing jig in a state where the joint and the body to be joined are in close contact at the joint. It may be a laser bonding device.

【００１０】[0010]

【発明の実施の形態】次に、実施形態を挙げて本発明を
より詳しく説明する。なお、以下で述べる内容は、本発
明に係るレーザ接着方法のみらず、レーザ接着装置にも
適宜、該当するものである。 （１）接合体と被接合体 レーザ接着の中でも、特に、樹脂材のレーザ溶着が重
要である。そのため、接合体は、レーザを透過する透過
性樹脂部材であり、被接合体は、レーザを吸収する吸収
性樹脂部材であると好ましい。さらに、それらの一方ま
たは両方が熱可塑性樹脂材からなるとより好ましい。こ
の場合、透過性樹脂部材を透過したレーザは、吸収性樹
脂部材で吸収されて、両者の接合部（接合界面付近）で
発熱する。そして、熱可塑性樹脂からなる少なくとも一
方の樹脂部材が、その発熱により溶融する。そして、レ
ーザ照射の停止後（または通過後）の冷却によって、そ
の溶融した樹脂が凝固して、両樹脂部材が接着される。BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described in more detail with reference to embodiments. The contents described below are applicable not only to the laser bonding method according to the present invention but also to the laser bonding apparatus as appropriate. (1) Among the laser bonding of the bonded body and the bonded body, the laser welding of the resin material is particularly important. Therefore, it is preferable that the joined body is a transparent resin member that transmits the laser, and the joined body is an absorptive resin member that absorbs the laser. More preferably, one or both of them are made of a thermoplastic resin material. In this case, the laser that has passed through the transparent resin member is absorbed by the absorptive resin member and generates heat at the joint between them (near the joint interface). Then, at least one of the resin members made of the thermoplastic resin melts due to the heat generated. Then, by cooling after the laser irradiation is stopped (or after passing through), the melted resin is solidified and both resin members are bonded.

【００１１】このような透過性樹脂部材として、具体的
には、ポリプロピレン（ＰＰ）、ポリアミド（ＰＡ）、
ポリエチレン（ＰＥ）、ポリカーボネート（ＰＣ）、Ａ
ＢＳ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）等を用いることが
できる。また、吸収性樹脂部材には、上記樹脂に、レー
ザ吸収性を有する着色剤を添加したものを用いることが
できる。そのような着色剤として、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、透過性樹脂部材
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。As such a transparent resin member, specifically, polypropylene (PP), polyamide (PA),
Polyethylene (PE), Polycarbonate (PC), A
BS resin, polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), etc. can be used. Further, as the absorptive resin member, a resin obtained by adding a colorant having a laser absorptivity to the above resin can be used. As such a colorant, specifically, a carbon-based material such as carbon black or an inorganic colorant such as a complex oxide-based pigment can be used. A colorant that transmits laser may be added to the transparent resin member. Examples of such colorants include organic dyes such as anthraquinone-based, perylene-based, perinone-based, heterocyclic-based, disazo-based, and monoazo-based dyes.

【００１２】さらには、接合体や被接合体は、ガラス繊
維、金属繊維等の補強材を分散させた複合材料からなる
ものでも良い。また、透過性樹脂部材にレーザを透過す
る非晶質性の樹脂を使用し、吸収性樹脂部材にレーザを
吸収する晶質性樹脂を使用するようにしても良い。ま
た、接合部に黒色セラミック等のレーザ吸収材を介在さ
せれば、透過性樹脂部材同士でも溶着することができ
る。なお、本明細書でいうレーザの透過性やレーザの吸
収性は、相対的なものに過ぎないことを断っておく。Further, the bonded body or the bonded body may be made of a composite material in which a reinforcing material such as glass fiber or metal fiber is dispersed. Alternatively, an amorphous resin that transmits laser may be used for the transmissive resin member, and a crystalline resin that absorbs laser may be used for the absorptive resin member. Further, if a laser absorbing material such as black ceramic is interposed in the joint portion, the transparent resin members can be welded together. It should be noted that the laser transmissivity and the laser absorptivity referred to in this specification are merely relative.

【００１３】これまでは樹脂部材同士を接合する場合
について説明したが、接合体と被接合体とを共に樹脂と
する必要性はない。例えば、それらの組合わせとして、
ガラスと樹脂、樹脂と金属、ガラスと金属等、種々のも
のを考えることができる。また、それらの接着性（相
性）が悪いときには、両者の接合部に適当な接着剤を予
め介在させておけば良い。そして、その接着剤をレーザ
で加熱することによって、両者を接合すれば良い。Up to now, the case of joining the resin members to each other has been described, but it is not necessary to use the resin for both the joined body and the joined body. For example, as a combination of them,
Various things such as glass and resin, resin and metal, glass and metal, etc. can be considered. Further, when the adhesiveness (compatibility) between them is poor, it is sufficient to interpose an appropriate adhesive in advance at the joint portion between the two. Then, the adhesive may be heated with a laser to bond the two.

【００１４】なお、本発明に係るレーザの照射工程は、
接合部を溶融状態にする場合に限られない。勿論、熱可
塑性樹脂部材を溶着する場合であれば、接合部を加熱溶
融する必要がある。しかし、接合体と被接合体とを溶融
させずとも、例えば、接合部に介在させた接着剤等にレ
ーザ照射し、加熱することで、その接合部を活性化さ
せ、それらを接着させる場合もあり得る。The laser irradiation step according to the present invention is
It is not limited to the case where the bonded portion is in a molten state. Of course, in the case of welding a thermoplastic resin member, it is necessary to heat and melt the joint portion. However, even if the bonded body and the body to be bonded are not melted, for example, by irradiating the adhesive or the like interposed in the bonded portion with a laser and heating it to activate the bonded portion and bond them. possible.

【００１５】（２）レーザ レーザは、種々のものを使用できるが、接合体や被接
合体の材質、接合幅、生産性等を考慮して、波長や出力
等の適当なものを選択する必要がある。このようなレー
ザとして、例えば、各種ガスレーザ、半導体レーザ等を
用いることができる。代表的なものは、ＹＡＧレーザで
ある。使用する波長は、接合部材の材質により異なる
が、樹脂部材であれば、８０８〜１０６４ｎｍ程度であ
る。また、そのときの出力は、数〜数数百Ｗである。溶
着幅は、レーザの絞りにより変更できるが、通常は、１
〜５ｍｍである。また、レーザの焦点は、接合部に合わ
せると良い。もっとも、透過性樹脂部材と吸収性樹脂部
材とを溶着するような場合には、接合部より吸収性樹脂
部材側に深い位置にその焦点を合わせても良い。また、
その焦点位置の調整により、加熱幅の制御をも行い得
る。(2) Laser A variety of lasers can be used, but it is necessary to select an appropriate laser such as wavelength and output in consideration of the material of the bonded body or the bonded body, the bonding width, the productivity and the like. There is. As such a laser, for example, various gas lasers, semiconductor lasers, etc. can be used. A typical one is a YAG laser. The wavelength used depends on the material of the joining member, but is about 808 to 1064 nm for a resin member. The output at that time is several to several hundreds W. The welding width can be changed by squeezing the laser, but usually 1
~ 5 mm. Further, it is preferable that the laser focus be on the junction. However, in the case where the permeable resin member and the absorbent resin member are welded together, the focus may be set at a position deeper on the absorbent resin member side than the joint portion. Also,
The heating width can also be controlled by adjusting the focal position.

【００１６】レーザの照射角度は、押圧治具の端面形
状にも依るが、概ね、接合体の上面から４５°付近、ま
たはそれを中心とした３０°〜６０°程度であると好ま
しい。レーザの照射角度をあまり大きくすると（つま
り、押圧治具の側面に近づけると）、押圧治具によって
加圧されている接合部に焦点を合わせずらくなる。一
方、レーザの照射角度をあまり小さくすると（つまり、
接合体の上面に近づけると）、屈折の影響が大きくな
り、やはり、所望の接合部に焦点を合わせずらくなる。The laser irradiation angle depends on the shape of the end face of the pressing jig, but is preferably about 45 ° from the upper surface of the bonded body or about 30 ° to 60 ° centered on it. If the irradiation angle of the laser is too large (that is, if it is brought close to the side surface of the pressing jig), it becomes difficult to focus on the joint portion pressed by the pressing jig. On the other hand, if the laser irradiation angle is too small (that is,
When brought closer to the upper surface of the bonded body, the influence of refraction becomes large, and it becomes difficult to focus on a desired bonded portion.

【００１７】レーザ発生器で発生したレーザは、光フ
ァイバーを通り、レンズで集光されて、接合部に照射さ
れることが多い。その場合、本発明でいうレーザ照射手
段は、レーザ発生器、光ファイバーおよびレンズにより
構成される。接合部が線状に延在している場合や点在し
ている場合、レーザを接合体等に対して相対移動させる
必要も生じ得る。このとき、例えば、レーザ側を移動さ
せるなら、接合体と被接合体とを押圧治具を用いてテー
ブルに固定し、ロボットのアームに前記照射部を把持さ
せて、予め入力されたプログラムに従ってその照射部を
移動させるようにしても良い。In many cases, the laser generated by the laser generator passes through an optical fiber, is condensed by a lens, and is irradiated onto the joint. In that case, the laser irradiation means in the present invention comprises a laser generator, an optical fiber and a lens. When the joint portions extend linearly or are scattered, it may be necessary to move the laser relative to the joint body or the like. At this time, for example, when moving the laser side, the bonded body and the bonded body are fixed to the table using a pressing jig, the arm of the robot is made to grip the irradiation unit, and the irradiation unit is moved in accordance with a program input in advance. The irradiation unit may be moved.

【００１８】（３）押圧治具 本発明の場合、押圧治具の材質は問題ではない。押圧治
具は、金属製でも、ガラス製でも、樹脂製でも良い。も
っとも、接合部の接着状況を目視確認等する場合、押圧
治具に透明なガラスやアクリル板等を使用すると良い。
押圧治具の形状は、少なくとも接合部近傍を、その直上
から確実に押圧できるものである必要がある。逆にいえ
ば、そうである限り、押圧治具は、接合体の全体を押圧
するものでなくても良い。(3) Pressing jig In the present invention, the material of the pressing jig does not matter. The pressing jig may be made of metal, glass, or resin. However, when visually confirming the bonding state of the joint portion, it is preferable to use transparent glass, an acrylic plate, or the like for the pressing jig.
The shape of the pressing jig needs to be capable of reliably pressing at least the vicinity of the joint from directly above. Conversely, as long as it is so, the pressing jig does not have to press the entire bonded body.

【００１９】もっとも、レーザは、押圧治具の斜め側方
から照射されて接合部を加熱するため、押圧治具はそれ
に適した形状とすることが望ましい。例えば、押圧治具
のレーザ入射側の側面は、接合部から直上方向に延在す
る直立面とすると好ましい。また、レーザの照射位置や
角度等をある程度変更しても、レーザが押圧治具に干渉
しないように、押圧治具の接合体側（押圧治具と接合体
とが当接する面の外周側）に面取部を設けると、より好
ましい。なお、面取部は、レーザの照射角度に合わせた
平面状であっても良いし、円弧面または球面であっても
良い。However, since the laser is irradiated from the oblique side of the pressing jig to heat the bonding portion, it is desirable that the pressing jig has a shape suitable for it. For example, the side surface of the pressing jig on the laser incident side is preferably an upright surface that extends directly above from the joint. In addition, even if the irradiation position or angle of the laser is changed to some extent, the laser does not interfere with the pressing jig, so that the laser is not interfered with the pressing jig on the bonded body side (outer peripheral side of the surface where the pressing jig and the bonded body contact) It is more preferable to provide a chamfered portion. The chamfered portion may be a flat surface that matches the irradiation angle of the laser, or may be an arc surface or a spherical surface.

【００２０】（４）モニタリング レーザ接着を行う場合、完成品を観ても、その接合部の
接着状況を判定することは難しい。特に、接合体および
被接合体が、可視光に対して透明でない場合、その判定
は困難である。そこで、レーザ接着装置が、その接合部
の接着状況を観察する観察手段を備えると好ましい。こ
の観察手段は、例えば、接合部直上に延在する押圧治具
中のピンホールから取り出される赤外線を検出するフォ
トセンサと、そのフォトセンサから得られた信号を処理
して、赤外線温度を出力する処理装置とで構成すること
ができる。そして、その赤外線温度（履歴）に基づき、
接合部での接着が適切に行われたか否かを判断できる。
こうすれば、直接目視できなくても、より確実に接着状
況を判断することが可能となる。なお、その結果に基づ
いて、適宜手動で、または自動的に、レーザ出力等を調
整するようにすると好ましい。また、この温度計測は、
連続的に行っても良いし、適当な箇所で部分的に行って
も良いし、時間的なインターバルをおいて行っても良
い。(4) Monitoring When performing laser bonding, it is difficult to judge the bonding status of the joint even when the finished product is viewed. In particular, when the bonded body and the bonded body are not transparent to visible light, the determination is difficult. Therefore, it is preferable that the laser bonding apparatus includes an observation means for observing the bonding state of the bonded portion. This observing means processes, for example, a photosensor for detecting infrared rays taken out from a pinhole in a pressing jig extending right above the joint portion, a signal obtained from the photosensor, and outputs an infrared temperature. It can be configured with a processing device. Then, based on the infrared temperature (history),
It can be judged whether or not the bonding at the joint portion is properly performed.
By doing so, it becomes possible to more reliably judge the adhesion state without being directly visible. It is preferable to adjust the laser output and the like appropriately or automatically based on the result. Also, this temperature measurement is
It may be performed continuously, may be performed partially at an appropriate place, or may be performed at time intervals.

【００２１】[0021]

【実施例】次に、実施例を挙げて、本発明をより具体的
に説明する。本発明に係るレーザ接着方法の中でも、特
に、熱可塑性樹脂のレーザ溶着方法について以下に説明
する。 （第１実施例）先ず、溶着する樹脂部材として、無色透
明なＰＣ（ポリカーボネート）製の透過性樹脂板１１
（接合体、透過性樹脂部材）と、そのＰＣにカーボンブ
ラックを混練して成形した黒色の吸収性樹脂板１２（被
接合体、吸収性樹脂部材）とを用意した。なお、透過性
樹脂板１１と吸収性樹脂板１２とは共に、厚さ２ｍｍの
平板である。EXAMPLES Next, the present invention will be described more specifically with reference to examples. Among the laser bonding methods according to the present invention, a laser welding method for a thermoplastic resin will be described below. (First Embodiment) First, a transparent and transparent resin plate 11 made of PC (polycarbonate) is used as a resin member to be welded.
A (bonded body, permeable resin member) and a black absorbent resin plate 12 (bonded body, absorbent resin member) formed by kneading and molding carbon black into the PC were prepared. The transparent resin plate 11 and the absorbent resin plate 12 are both flat plates having a thickness of 2 mm.

【００２２】次に、透過性樹脂板１１を上側にしてそれ
らを積層し、テーブルＴ上に載置した。さらに、アルミ
ニウム合金材を切削加工して得た直方体状の押圧治具１
３を、その透過性樹脂板１１の上に載置した。そして、
その押圧治具１３の上面を油圧プレスＰで加圧し、透過
性樹脂板１１と吸収性樹脂板１２とをクランプすると共
に両者の接合面を密着させた（押圧工程）。ここで、本
実施例では、押圧治具１３がレーザ溶着する接合部Ｂの
直上を押圧している。これにより、その接合部Ｂにおけ
て、透過性樹脂板１１と吸収性樹脂板１２との間に浮き
上がりが生じることもなく、両者の接合面は密着する。
なお、透過性樹脂板１１と吸収性樹脂板１２との接合面
間の面圧は、０．３〜０．５ＭＰａ程度とした。Next, the transparent resin plate 11 was placed on the upper side, and they were stacked and placed on the table T. Furthermore, a rectangular parallelepiped pressing jig 1 obtained by cutting an aluminum alloy material
3 was placed on the transparent resin plate 11. And
The upper surface of the pressing jig 13 was pressed by the hydraulic press P to clamp the permeable resin plate 11 and the absorbent resin plate 12 and to bring the joint surfaces of both into close contact (pressing step). Here, in this embodiment, the pressing jig 13 presses directly above the joining portion B to be laser-welded. As a result, at the joint B, the permeable resin plate 11 and the absorptive resin plate 12 are not lifted, and the joint surfaces of the both are in close contact with each other.
The surface pressure between the joint surfaces of the permeable resin plate 11 and the absorbent resin plate 12 was set to about 0.3 to 0.5 MPa.

【００２３】次に、その押圧治具１３の斜め側方から、
レーザＬを照射した（照射工程）。ここでは、溶着する
樹脂に合わせて、波長：１０６４ｎｍ、出力：５ＷのＹ
ＡＧレーザを用いた。レーザＬの入射角は、透過性樹脂
板１１の上面から測定して約４５°とした。そして、透
過性樹脂板１１中におけるレーザＬの屈折を考慮しつ
つ、レーザＬの焦点が接合部Ｂに合うようにした。この
とき、光軸は勿論、光束の一部さえも、押圧治具１３の
側面に干渉しないように注意した。このようなレーザＬ
を照射する位置、角度、焦点等の調整は、レーザ照射部
１５により行った。このレーザ照射部１５は、レーザ発
生器（図示せず）から光ファイバー（図示せず）を介し
て供給されるレーザ光を集光すると共に、レーザＬの照
射方向等を調整するものである。Next, from the oblique side of the pressing jig 13,
Laser L was irradiated (irradiation step). Here, according to the resin to be welded, Y of wavelength: 1064 nm, output: 5 W
An AG laser was used. The incident angle of the laser L was about 45 ° measured from the upper surface of the transparent resin plate 11. Then, the focal point of the laser L is adjusted to the joint B while taking into consideration the refraction of the laser L in the transparent resin plate 11. At this time, care was taken so that not only the optical axis but also a part of the light flux did not interfere with the side surface of the pressing jig 13. Such a laser L
The laser irradiation unit 15 adjusted the position, angle, focus, etc. for irradiating the laser beam. The laser irradiation unit 15 collects laser light supplied from a laser generator (not shown) through an optical fiber (not shown) and adjusts the irradiation direction of the laser L and the like.

【００２４】さらに、このレーザ照射部１５は、工業用
ロボットのアーム（図示せず）に把持されており、工業
用ロボットのプログラムによって、その軌道が決定され
得る。そして、レーザ照射部１５の動きに伴うレーザＬ
の照射軌跡に沿って、透過性樹脂板１１と吸収性樹脂板
１２とが溶着され、所定形状の接合部Ｂが形成される。
なお、本実施例の場合、レーザ供給源を含めたレーザ照
射部１５が、本発明でいうレーザ照射手段に相当する。
また、上記押圧治具１３とそれに荷重を印可する油圧プ
レスＰとが本発明でいう押圧手段に相当する。Further, the laser irradiation unit 15 is held by an arm (not shown) of an industrial robot, and its trajectory can be determined by a program of the industrial robot. Then, the laser L accompanying the movement of the laser irradiation unit 15
The permeable resin plate 11 and the absorptive resin plate 12 are welded to each other along the irradiation locus to form a joint B having a predetermined shape.
In the case of this embodiment, the laser irradiation unit 15 including the laser supply source corresponds to the laser irradiation means in the present invention.
The pressing jig 13 and the hydraulic press P that applies a load thereto correspond to the pressing means in the present invention.

【００２５】（第２実施例）本実施例は、第１実施例の
押圧治具１３の形状を変更した押圧治具２３を用いてレ
ーザ溶着を行ったものである。その押圧治具２３を図２
に示す。なお、第１実施例と同じ部材には、同一の符号
を付して示した。押圧治具２３は、図２からも分かるよ
うに、レーザＬの入射角度に応じた平面上の面取部２３
ａを透過性樹脂板１１側に有する。また、押圧治具２３
の上面（つまり、受圧面）は、押圧治具１３よりも拡大
したものとなっている。これにより、押圧治具２３は、
広い受圧面で油圧プレスＰのプレス荷重を安定的に受け
つつも、レーザＬの光路を妨げることがないようになっ
ている。また、このような面取部は、比較的容易な面取
加工で形成されるため、既存の治具を有効に活用するこ
とも可能となる。さらに、装置の都合上、図１に示すよ
うな形状の押圧治具を使用できない場合でも、既存の治
具にそのような面取部を設ければ、本発明を容易に実施
できるようになる。(Second Embodiment) In this embodiment, laser welding is performed using a pressing jig 23 in which the shape of the pressing jig 13 of the first embodiment is changed. The pressing jig 23 is shown in FIG.
Shown in. The same members as those in the first embodiment are designated by the same reference numerals. As can be seen from FIG. 2, the pressing jig 23 has a chamfered portion 23 on a plane corresponding to the incident angle of the laser L.
a is provided on the transparent resin plate 11 side. In addition, the pressing jig 23
The upper surface (that is, the pressure receiving surface) is larger than the pressing jig 13. As a result, the pressing jig 23
The wide pressure receiving surface stably receives the pressing load of the hydraulic press P, but does not interfere with the optical path of the laser L. Further, since such a chamfered portion is formed by a relatively easy chamfering process, it is possible to effectively use an existing jig. Further, even if the pressing jig having the shape as shown in FIG. 1 cannot be used for the convenience of the apparatus, the present invention can be easily implemented by providing such a chamfered portion in the existing jig. .

【００２６】（第３実施例）さらに、本発明は、単なる
板上の樹脂板同士を溶着する以外に、２分割された蓋体
と容体とからなる容器の封止接合にも利用できる。例え
ば、図３に示すように、蓋体３１と容体３２とからなる
容器の、連続した方形環状の合わせ面（接合面）を順に
溶着して封止する場合にも本発明を利用できる。そのと
き、レーザＬの照射をその接合面に沿って一周させる
と、方形環状の溶着された接合部Ｂが形成されて、封止
された容器が得られる。このとき、押圧治具３３は、溶
着される環状の接合面部分さえ、直上付近から加圧して
いれば良い。従って、押圧治具３３は、図３に示すよう
に、接合面形状に応じた方形環状のものであっても良
い。なお、押圧治具３３の下面側周囲には、第２実施例
と同様の面取部３３ａを設けた。(Third Embodiment) Further, the present invention can be utilized for sealing and joining a container composed of a lid body and a container which are divided into two, in addition to simply welding resin plates on each other. For example, as shown in FIG. 3, the present invention can be applied to the case where a continuous rectangular annular mating surface (joining surface) of a container including a lid 31 and a container 32 is welded and sealed in order. At this time, when the irradiation of the laser L is circulated once along the joint surface, a square annular welded joint portion B is formed, and a sealed container is obtained. At this time, the pressing jig 33 only needs to press the welded annular joint surface portion from immediately above. Therefore, as shown in FIG. 3, the pressing jig 33 may be a rectangular ring shape according to the shape of the joint surface. A chamfered portion 33a similar to that of the second embodiment was provided around the lower surface of the pressing jig 33.

【００２７】（第４実施例）本実施例は、第２実施例の
レーザ溶着装置をベースに、溶着状況を観察するための
モニタリング装置（観察手段）を付加したものである。
なお、第１実施例と同じ部材には、同一の符号を付して
示した。モニタリング装置は、押圧治具４３に埋込んだ
フォトセンサ４６と、フォトセンサ４６から生成される
赤外線信号を処理し、レーザＬが照射されている接合部
Ｂの赤外線温度を表示する処理装置４７とからなる。こ
の赤外線温度を直接観察するか、または、その履歴を観
ることにより、接合部Ｂにおける溶着が正常に行われた
か否かを判断できる。(Fourth Embodiment) In this embodiment, a monitoring device (observation means) for observing the welding condition is added to the laser welding device of the second embodiment.
The same members as those in the first embodiment are designated by the same reference numerals. The monitoring device includes a photo sensor 46 embedded in the pressing jig 43, and a processing device 47 that processes an infrared signal generated by the photo sensor 46 and displays the infrared temperature of the joint B irradiated with the laser L. Consists of. By directly observing the infrared temperature or observing the history thereof, it can be judged whether or not the welding at the joint B is normally performed.

【００２８】なお、フォトセンサ４６は、接合部Ｂの直
上に搾設されたピンホール４３ｂから接合部Ｂの赤外線
が検出されるように配設されている。接合部Ｂの直上に
フォトセンサ４６を設けることで、より高感度の検出が
可能となるからである。また、図４では、観察手段を一
箇所しか示していないが、接合部Ｂの形状に応じて、複
数のフォトセンサ４６を配置するようにしても良い。The photosensor 46 is arranged so that the infrared rays of the joint B can be detected from the pinhole 43b squeezed directly above the joint B. This is because by providing the photosensor 46 just above the joint B, it is possible to perform detection with higher sensitivity. Although only one observation means is shown in FIG. 4, a plurality of photosensors 46 may be arranged according to the shape of the joint B.

【００２９】[0029]

【発明の効果】本発明によれば、先ず、接合体と被接合
体との接合部付近の直上を押圧治具で確実に加圧するこ
とにより、その接合部における密着性が高められる。次
に、その状態で、レーザが押圧治具の斜め側方からその
接合部に適切に照射されるため、接着不良等が防止さ
れ、安定した接着がなされる。そして、押圧治具の交換
や洗浄等の工数も削減でき、生産性の向上や低コスト化
等も図れる。According to the present invention, first, the pressure immediately above the joint between the joined body and the body to be joined is surely pressed by the pressing jig, so that the adhesion at the joint is enhanced. Next, in that state, the laser is appropriately applied to the joint portion from the oblique side of the pressing jig, so that defective adhesion is prevented and stable adhesion is achieved. Further, it is possible to reduce the number of man-hours such as replacement of the pressing jig and cleaning, and it is possible to improve productivity and reduce cost.

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

【図１】本発明に係る第１実施例を概念的に示す模式図
である。FIG. 1 is a schematic diagram conceptually showing a first embodiment according to the present invention.

【図２】本発明に係る第２実施例を概念的に示す模式図
である。FIG. 2 is a schematic diagram conceptually showing a second embodiment according to the present invention.

【図３】本発明に係る第３実施例を概念的に示す模式図
である。FIG. 3 is a schematic diagram conceptually showing a third embodiment according to the present invention.

【図４】本発明に係る第４実施例を概念的に示す模式図
である。FIG. 4 is a schematic diagram conceptually showing a fourth embodiment according to the present invention.

【図５】従来の樹脂溶着方法の概念的を示す模式図であ
る。FIG. 5 is a schematic view showing the concept of a conventional resin welding method.

【図６】本発明の完成前に検討した樹脂溶着方法の概念
的を示す模式図である。FIG. 6 is a schematic view showing the concept of the resin welding method examined before the completion of the present invention.

【符号の説明】[Explanation of symbols]

１１ 透過性樹脂板 １２ 吸収性樹脂板 １３ 押圧治具 Ｂ 接合部 Ｌ レーザ Ｔ テーブル Ｐ 油圧プレス 11 Transparent resin plate 12 Absorbent resin plate 13 Press jig B joint L laser T table P hydraulic press

───────────────────────────────────────────────────── フロントページの続き (72)発明者 祝 洋三 愛知県刈谷市昭和町１丁目１番地 株式会 社デンソー内 Ｆターム(参考） 3J001 FA02 GA06 GB01 HA02 JD11 KA01 KA23 4F211 AD05 TA01 TC01 TD11 TJ14 TJ21 TN27 TQ04    ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yozo             1-1, Showa-cho, Kariya city, Aichi stock market             Inside the company DENSO F-term (reference) 3J001 FA02 GA06 GB01 HA02 JD11                       KA01 KA23                 4F211 AD05 TA01 TC01 TD11 TJ14                       TJ21 TN27 TQ04

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】レーザを透過する接合体と該接合体が接合
される被接合体との間の接合部へ該接合体側から該レー
ザを照射することにより、該接合部を加熱して該接合体
と該被接合体とを接着するレーザ接着方法において、 前記レーザの照射される接合部近傍の直上から押圧治具
により前記接合体を前記被接合体へ押圧する押圧工程
と、 該押圧工程により該接合部で該接合体と該被接合体とを
密着させた状態で該押圧治具の斜め側方から該接合部へ
前記レーザを照射する照射工程と、 を備えることを特徴とするレーザ接着方法。1. A laser beam is irradiated from the side of the bonded body to a bonded portion between a bonded body which transmits a laser and a bonded body to which the bonded body is bonded, whereby the bonded portion is heated to bond the bonded body. In a laser bonding method for bonding a body and a body to be bonded, a pressing step of pressing the body to be bonded to the body to be bonded with a pressing jig from immediately above the vicinity of the laser-irradiated joint part, An irradiation step of irradiating the laser to the joint from an oblique side of the pressing jig in a state where the joint and the body to be joined are closely adhered to each other at the joint. Method. 【請求項２】前記押圧治具は、前記接合体側に前記レー
ザとの干渉を防止するための面取部を有する請求項１記
載のレーザ接着方法。2. The laser bonding method according to claim 1, wherein the pressing jig has a chamfered portion on the bonded body side for preventing interference with the laser. 【請求項３】前記接合体は、レーザを透過する透過性樹
脂部材であり、 前記被接合体は、レーザを吸収する吸収性樹脂部材であ
る請求項１記載のレーザ接着方法。3. The laser bonding method according to claim 1, wherein the bonded body is a transparent resin member that transmits a laser, and the bonded body is an absorptive resin member that absorbs a laser. 【請求項４】前記接合体と前記被接合体との少なくとも
一方は熱可塑性樹脂であり、 前記照射工程は、該熱可塑性樹脂を前記接合部で加熱溶
融させる工程である請求項１または３に記載のレーザ接
着方法。4. At least one of the joined body and the body to be joined is a thermoplastic resin, and the irradiation step is a step of heating and melting the thermoplastic resin at the joint portion. The laser bonding method described. 【請求項５】レーザを透過する接合体と該接合体が接合
される被接合体との間の接合部へ該接合体側から該レー
ザを照射することにより、該接合部を加熱して該接合体
と該被接合体とを接着させるレーザ接着装置において、 前記レーザの照射される接合部近傍の直上から押圧治具
により前記接合体を前記被接合体へ押圧する押圧手段
と、 該押圧手段により該接合部で該接合体と該被接合体とを
密着させた状態で該押圧治具の斜め側方から該接合部へ
前記レーザを照射するレーザ照射手段と、 を備えることを特徴とするレーザ接着装置。5. The joint is heated by irradiating the joint between a laser-permeable joint and a body to which the joint is joined from the joint side to heat the joint. In a laser bonding apparatus for bonding a body and the body to be bonded, a pressing means for pressing the body to be bonded to the body with a pressing jig from directly above the vicinity of the laser-irradiated joint, and the pressing means. A laser irradiating means for irradiating the laser to the joint from an oblique side of the pressing jig in a state where the joint and the body to be joined are closely adhered at the joint. Adhesive device. 【請求項６】さらに、前記接合部の接着状況を観察する
観察手段を備える請求項５記載のレーザ接着装置。6. The laser bonding apparatus according to claim 5, further comprising an observing means for observing a bonding state of the joint portion.
JP2002024982A 2002-02-01 2002-02-01 Laser bonding method and laser bonding device Pending JP2003225946A (en)

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