WO2018003133A1 - Dispositif de soudage au laser pour résine transmettant la lumière et procédé de soudage au laser pour résine transmettant la lumière - Google Patents

Dispositif de soudage au laser pour résine transmettant la lumière et procédé de soudage au laser pour résine transmettant la lumière Download PDF

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Publication number
WO2018003133A1
WO2018003133A1 PCT/JP2016/080713 JP2016080713W WO2018003133A1 WO 2018003133 A1 WO2018003133 A1 WO 2018003133A1 JP 2016080713 W JP2016080713 W JP 2016080713W WO 2018003133 A1 WO2018003133 A1 WO 2018003133A1
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WIPO (PCT)
Prior art keywords
resin material
laser beam
reflecting
laser
jig
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Application number
PCT/JP2016/080713
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English (en)
Japanese (ja)
Inventor
渡辺　公彦
裕樹 鬼頭
Original Assignee
精電舎電子工業株式会社
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Publication of WO2018003133A1 publication Critical patent/WO2018003133A1/fr

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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
    • B29C66/51—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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • 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
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
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    • 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
    • B29C65/1641—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 making use of a reflector on the opposite side, e.g. a polished mandrel or a mirror
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
    • B29C65/1658—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning once, e.g. contour laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B29C65/1667—Laser beams characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous laser 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
    • B29C65/1687—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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/245—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool the heat transfer being achieved contactless, e.g. by radiation
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • 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
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    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
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    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • 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
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    • 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
    • B29C66/50—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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/81266—Optical properties, e.g. transparency, reflectivity
    • B29C66/81268—Reflective to electromagnetic radiation, e.g. to visible light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • 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
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • B29C66/91231—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 joining tool
    • 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
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • 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
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02245—Abrading, e.g. grinding, sanding, sandblasting or scraping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7316—Surface properties
    • B29C66/73161—Roughness or rugosity
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/865—Independently movable welding apparatus, e.g. on wheels
    • B29C66/8652—Independently movable welding apparatus, e.g. on wheels being pushed by hand or being self-propelling
    • B29C66/86531—Independently movable welding apparatus, e.g. on wheels being pushed by hand or being self-propelling being guided
    • B29C66/86533—Independently movable welding apparatus, e.g. on wheels being pushed by hand or being self-propelling being guided by rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/004—Bent tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/753—Medical equipment; Accessories therefor
    • B29L2031/7542—Catheters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/753—Medical equipment; Accessories therefor
    • B29L2031/7542—Catheters
    • B29L2031/7543—Balloon catheters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/753—Medical equipment; Accessories therefor
    • B29L2031/7546—Surgical equipment
    • B29L2031/7548—Cannulas

Definitions

  • the present invention relates to a laser welding apparatus and a laser welding method for irradiating two or more light transmissive resins with laser light to weld these resins, and in particular, hollows such as a cylindrical or tubular shape that are light transmissive resins.
  • the present invention relates to a laser welding method.
  • a hollow first resin material such as a cylinder or a tube, which is a light-transmitting resin
  • a hollow resin material such as a tube or a tube inserted into the first resin material or a rod
  • the outer peripheral surface of the lower half of the first resin material 1 is subjected to reflection treatment with the second resin material 2 inserted into the first resin material 1 as shown in FIGS. 26A and 26B.
  • the laser beam 6 is applied to the first resin material 1 and the second resin material 2 placed on the recess groove 3a from the laser beam irradiation means 5 as shown in FIG. Irradiate.
  • the laser beam 6 that has passed through the first resin material 1 and the second resin material 2 is reflected by the surface of the recess groove 3a, and the first resin material 1 and the second resin material 2 are passed and reflected. repeat.
  • the laser beam 6 is absorbed by the first resin material 1 and the second resin material 2, and the first resin material 1 and the second resin material 2 generate heat and are welded to each other.
  • the energy of the laser light source is not sufficiently utilized, and a high-power laser output device is required.
  • laser welding limited to the laser beam irradiation range can be performed, it has been difficult to continuously and uniformly weld a long tubular light-transmitting resin material such as a pipe over a long range.
  • the temperature of the reflecting jig was not constant, and the welding quality such as laser welding strength was not uniform. It took time for the reflecting jig to radiate heat and return to a constant temperature, and the laser welding cycle time was long, resulting in poor productivity.
  • a first resin material and a second resin material are surrounded by a non-contact reflective surface, and laser light is emitted from the opening of the reflective surface.
  • a method of welding the first resin material and the second resin material is also known.
  • the tube wall of the tube part is constructed from at least two material layers 100, 200 having different heat absorption characteristics, and one of these layers has at least a partial area with excellent heat absorption characteristics for laser radiation. In preparation.
  • the tube portion is surrounded by the mirror 300 in a non-contact manner. When the laser beam 600 from the laser irradiation means 500 is reflected by the mirror 300 and repeatedly irradiates the tube portion, heat is generated. Is done.
  • the tubular part 110 and the absorbing plastic part 210 are welded by irradiating with a laser beam 610.
  • the tubular part 110 and the absorbing plastic part 210 are surrounded in a non-contact manner by the cylindrical mirror 310, and the cylindrical mirror 310 reflects the dispersed laser light 610 and transmits the dispersed laser light to the tubular part 110 and the absorbing plastic part 210. Recirculate.
  • the cylindrical mirror 310 is shaped so that the laser light continues to be re-reflected and finally incident from all directions around the tubular part 110 and the absorbing plastic part 210 to which the laser light is welded. have. When the reflection of the laser beam is repeated, the tubular part 110 and the absorbing plastic part 210 are welded.
  • the first resin material 120 and the second resin material 220 shown in FIG. 30 are sandwiched between a pair of mirrors 320 and 330, and the first resin material 120 and the second resin material 220 are obliquely viewed.
  • a method of welding the first resin material 120 and the second resin material 220 by irradiating laser light is known.
  • the reflection of laser light in the depth direction on the paper surface of the first resin material 1 and the second resin material 2 perpendicular to the cross section of FIG. And said problem was not solved (for example, refer patent document 4).
  • laser welding can only be performed in a product-by-product manner.
  • the present invention uses the energy of the laser light source by using a new technology for reflecting the laser light in the short direction (cross-sectional direction) and the long direction (axial direction) of the first resin material and the second resin material. It is an object of the present invention to provide a problem solving means that can improve laser welding and enable laser welding with a small output laser output means. And it aims at solving various conventional incidental problems based on such problem solving means. That is, it is possible to uniformly weld a certain range length in the longitudinal direction of a long light transmitting resin material, stabilize the temperature of the reflecting jig and the reflecting lid, and improve the welding quality such as laser welding strength. Lasers that can be used in mass production, such as making it possible to cool the reflecting jig in a short time, shortening the cycle time of laser welding, and improving productivity. An object is to provide a welding method and a laser welding apparatus.
  • a laser welding apparatus is a laser apparatus in which a light-transmissive first resin material and a second resin material are brought into contact with each other, and these first and second resin materials are laser-welded.
  • the first resin with a light irradiation means and a cross-sectional shape corresponding to the outer peripheral shape of the first resin material, the surface forming a reflective surface for reflecting laser light, and the second resin material in contact with the first resin
  • a reflection jig having a recess groove on which a material can be placed and can be received; and a wall portion on both sides above the recess groove, the surface of which forms a reflection surface that reflects laser light, and the reflection jig And a reflecting surface having a laser beam passage hole through which the laser beam generated by the laser beam irradiating means is passed and mounted on the wall portion.
  • the laser beam generated by the laser beam irradiating means is a laser beam of a reflective lid attached on the wall.
  • Laser light that has passed through the first resin material and the second resin material by being irradiated from the passage hole toward the first resin material placed in the concave groove with the second resin material in contact therewith Is configured to heat and weld the first resin material and the second resin material while repeatedly reflecting the concave groove, the wall, and the reflective surface of the reflective lid.
  • the laser beam is repeatedly directed toward the first resin material and the second resin material between the concave groove and the reflection surface of the reflection jig and the reflection surface of the reflection lid.
  • the reflecting surface of the reflecting lid is made spherical so that the laser beam is reflected so as to be concentrated near the center of the laser beam irradiation in the longitudinal direction, or the reflecting surface of the reflecting lid is made to have a cylindrical surface and an inclined surface.
  • the laser beam is concentrated in a certain length range near the center of the laser beam irradiation in the longitudinal direction.
  • the laser beam irradiation means is placed on the reflection lid so that it can move along the reflection jig.
  • the laser welding apparatus of the present invention is provided with a temperature control means and a temperature sensor in the reflection jig or the reflection lid, and the laser beam output level or the reflection treatment of the reflection lid depends on the temperature detected by the reflection jig or the reflection lid. Controls the moving speed of the tool.
  • the temperature of the reflecting jig, the reflecting lid, the first resin material, and the second resin material is controlled so that laser welding is performed within a certain temperature range. It solves the problem that enables uniform welding quality.
  • a cooling means is provided in the reflecting jig or the reflecting lid, and the cooling means is controlled by the temperature detected from the reflecting jig or the reflecting lid, so that the reflecting jig or the reflecting lid is controlled. To cool down.
  • the present invention makes it possible to supply a laser welding apparatus in which laser light is repeatedly reflected between a reflection jig and a reflection lid to improve the use of energy of a laser light source, and a continuous light-transmitting resin material is continuously provided.
  • Laser welding equipment that can be uniformly welded can be supplied, laser welding equipment with improved uniformity of laser welding quality can be supplied by controlling the temperature, and the temperature cycle of laser welding can be shortened by cooling means Can supply laser welding equipment with improved laser welding productivity.
  • FIG. 1 is a cross-sectional view of a main part of a laser welding apparatus according to a first embodiment of the present invention.
  • the principal part sectional drawing in alignment with the longitudinal direction of the resin material to be welded which showed the locus
  • 1 is an external perspective view of a laser welding apparatus according to a first embodiment of the present invention.
  • Sectional drawing which shows the 1st modification of the laser welding apparatus of Embodiment 1 of this invention, and added the locus
  • Sectional drawing which shows the 2nd modification of the laser welding apparatus of Embodiment 1 of this invention, and added the locus
  • the external appearance perspective view which showed the 3rd modification of the laser welding apparatus of Embodiment 1 of this invention.
  • the top view which showed the 4th modification of the laser welding apparatus of Embodiment 1 of this invention.
  • the principal part sectional drawing which showed the 5th modification of the laser welding apparatus of Embodiment 1 of this invention.
  • FIG. 9A The figure which added the locus
  • Sectional drawing which shows the 2nd modification of the laser welding apparatus of Embodiment 3 of this invention, and added the locus
  • Sectional drawing which shows the 3rd modification of the laser welding apparatus of Embodiment 3 of this invention, and added the locus
  • the principal part sectional drawing which shows the locus
  • Sectional drawing which shows the laser welding apparatus of Embodiment 6 of this invention, and added the locus
  • Sectional drawing which shows the laser welding apparatus of Embodiment 7 of this invention, and added the locus
  • the principal part sectional drawing which added the locus
  • the other principal part laser welding apparatus is shown and principal part sectional drawing of the apparatus.
  • the conventional laser welding apparatus is shown, and the principal part sectional drawing of the apparatus is shown.
  • FIG. 1 shows a laser welding apparatus according to Embodiment 1 of the present invention.
  • the positional relationship among a first resin material 1, a second resin material 2, a reflecting jig 3, a reflecting lid 4, and a laser beam irradiation means 5 is shown. It is the principal part sectional drawing shown. However, a control device and a power supply device for outputting laser light are not shown.
  • the tubular first resin material 1 and the second resin material 2 to be welded are in a state where the second resin material 2 is inserted into the first resin material 1 and in contact with each other. 3 in the recess groove 3a.
  • the cross-sectional shape of the concave groove 3 a that receives the resin material of the reflecting jig 3 is a semicircular shape that is in close contact with the outer periphery of the lower half of the first resin material 1, and is in contact with the outer periphery of the first resin material 1.
  • the material of the reflecting jig 3 is a metal material that reflects laser light, such as aluminum.
  • the surfaces of the concave groove 3a of the reflecting jig 3 and the inclined surfaces 3b and 3c of the wall (W) are mirror surfaces and reflect the laser light.
  • a method of making the surface of the concave groove 3a and the inclined surfaces 3b, 3c into a mirror surface a method of mirror polishing the surface of the aluminum block, a method of applying a mirror tape (T) in which the surface is an aluminum foil and an adhesive is applied to the back surface, There are a method of metal plating the surface, a method of metal vapor deposition on the surface, a method of coating the surface, and the like.
  • T mirror tape
  • thin mirror tapes (T 1 , T 2 ) of aluminum that reflect laser light are respectively applied to the concave grooves 3a of the reflecting jig 3, the inclined surfaces 3b, 3c of the wall (W), and the surface of the reflecting lid 4.
  • the figure shows the aluminum foil surface attached.
  • the thickness of the mirror tape (T 1 , T 2 ) is shown to be thicker than the actual one for understanding the invention.
  • the outer peripheral surface of the lower half from the center of the tubular first resin material 1 is in close contact with the concave groove 3 a of the reflecting jig 3.
  • the outer peripheral surface of the upper half of the first resin material 1 faces the reflective lid 4 with the space 3d interposed therebetween.
  • the reflection lid 4 is detachably mounted with the reflection surface 4a facing down.
  • the reflecting surface 4a is made of a spherical surface that connects the tips of the slopes 3b and 3c of the wall (W) of the reflecting jig 3 in an arch shape.
  • the surface of the reflecting surface 4a is a mirror surface.
  • a thin aluminum mirror surface tape (T 1 ) that reflects laser light is attached with the aluminum foil surface facing up. It is shown.
  • the center O 1 of the spherical surface of the reflecting surface 4 a of the reflecting lid 4 is matched with the center O 2 of the tubular first resin material 1 and the second resin material 2.
  • the distances from the center O 2 of the outer peripheral surfaces of the tubular first resin material 1 and the second resin material 2 are indicated as radii R 1 and R 2 , respectively, and the reflecting surfaces are spherical.
  • the distance from 4a and the center O 1 is shown as radius R 3 .
  • the locus of the laser beam 6 when the laser beam is output from the laser beam irradiation means 5 of FIG. 1 is indicated by a one-dot chain line.
  • a laser beam passage hole 4 b is formed at the upper center of the reflection lid 4.
  • the laser beam irradiation means 5 is placed on the reflection lid 4 so that the laser beam 6 is irradiated toward the first resin material 1 and the second resin material 2 through the laser beam passage hole 4b.
  • the diameter D of the laser beam passage hole 4b is exaggeratedly large in FIGS. 1 and 2, but actually, the size and material of the first resin material 1 and the second resin material 2, and laser beam irradiation. It is determined by the output of the means 5 or the like.
  • the laser light 6 generated by the laser light irradiation means 5 is applied to the first resin material 1 and the second resin material 2 placed in the concave groove 3 a of the reflection jig 3.
  • the laser beam 6 generated by the laser beam irradiation means 5 passes through the first resin material 1 and the second resin material 2 as the laser beam 6 a and is reflected by the concave groove 3 a of the reflection jig 3. Then, the laser beams 6b and 6c are sequentially refracted to reach the reflecting surface 4a of the reflecting lid 4, and reflected by the reflecting surface 4a of the reflecting lid 4, and again, the concave groove 3a and the wall (W) of the reflecting jig 3 are reflected. Heading to slopes 3b and 3c. The laser beam 6 is reflected by the concave groove 3a of the reflecting jig 3, the slopes 3b and 3c of the wall (W), and the reflecting surface 4a of the reflecting lid 4.
  • the reflecting jig 3 and the reflecting lid 4 in FIG. 1 are formed by cutting an aluminum block, have a certain heat capacity, generate heat by absorbing the laser beam 6, and retain heat, and are radiated from the outer surface.
  • the The first resin material 1 and the second resin material 2 generate heat by absorbing the laser light in a proportion corresponding to the transmittance (or absorption rate) of the laser light. Further, if the surface roughness of the contact surface between the first resin material 1 and the second resin material 2 is rough, the laser beam is slightly on the contact surface between the first resin material 1 and the second resin material 2. Heat is reflected from the gap. And the 1st resin material 1 and the 2nd resin material 2 fuse
  • the contact surfaces of the first resin material 1 and the second resin material 2 are preferably roughened in advance.
  • a roughening method for example, one of the contact surfaces of the first resin material 1 and the second resin material 2 is finely uneven with sandpaper, or a metal knurl with a texture is pressed to make fine unevenness, What is necessary is just to give a fine unevenness with a shaping
  • the laser light is surely reflected and generated in a small gap of fine irregularities on the contact surface of the first resin material 1 and the second resin material 2, and solidifies and welds when the irradiation of the laser light is finished. If the laser beam is irradiated once, so much heat generation cannot be expected, but in the present invention, the laser beam passes many times due to the repeated reflection of the laser beam.
  • the first resin material 1 and the second resin material 2 each absorb laser light and generate heat. If there are very fine irregularities on the contact surfaces of the first resin material 1 and the second resin material 2, they are repeatedly reflected on the contact surfaces with very fine irregularities and generate heat.
  • FIG. 3 is a cross-sectional view of the first embodiment of the present invention cut along the longitudinal direction of the tubular first resin material 1. Since the first resin material 1 and the second resin material 2 have a length in the longitudinal direction, isolation walls 4c and 4d are provided at both ends in the longitudinal direction of the reflecting lid 4 (left and right ends in FIG. 4). .
  • the isolation walls 4c and 4d occupy a space from the lower surface of the reflective lid 4 to the outer peripheral surface of the upper half of the first resin material 1, and the outer periphery of the upper half of the reflective lid 4 and the first resin material 1
  • the space 3d facing the surface is separated in the longitudinal direction so that the heat and the laser beam 6 do not escape to the outside.
  • the inner surfaces of the separating walls 4c and 4d connected to the reflecting surface 4a are mirror surfaces.
  • FIG. 3 shows that, like the reflecting surface 4a, a thin mirror tape (T 1 ) made of aluminum is attached to the inner surfaces of the separating walls 4c and 4d with the aluminum foil surface facing up.
  • the laser light 6 transmitted through the first resin material 1 and the second resin material 2 out of the laser light 6 generated by the laser light irradiation means 5 is reflected by the concave groove 3 a of the reflection jig 3.
  • the locus when it goes to the outside just below the laser beam transmission hole 4b is shown by a one-dot chain line.
  • the spherical reflecting surface 4a is formed on the reflecting lid 4, even if the first resin material 1 and the second resin material 2 are long in the longitudinal direction, the laser beam 6 is irradiated with the laser beam. Collect in the center of the irradiation range.
  • FIG. 4 is an external perspective view of the laser device according to the first embodiment of the present invention. 2 to 4, the laser light 6 from the laser light irradiation means 5 irradiated toward the first resin material 1 and the second resin material 2 is reflected by the reflection jig.
  • the concave portion 3a, the slopes 3b and 3c of the wall (W) and the reflecting surface 4a of the reflecting lid 4 are repeatedly reflected, but the first resin material does not diffuse outward from the center of the irradiation range of the laser beam 6. It is understood that the longitudinal directions of the first and second resin materials 2 also gather at the center of the irradiation range of the laser light 6.
  • the laser welding apparatus of the present invention repeatedly reflects the laser beam 6 output from the laser beam irradiation means 5 and repeatedly irradiates the first resin material 1 and the second resin material 2 with the laser beam. ing. And the utilization of the energy of a laser light source as the energy of laser welding is improved, and the subject of realizing laser welding required with a low-power laser welding apparatus is solved.
  • the laser welding apparatus of the present invention a laser welding apparatus that laser welds the first resin material 1 and the second resin material 2 that are light transmissive resins has been described.
  • the laser beam has a high transmittance, and most of the laser beam is transmitted and a part of the laser beam is absorbed. Therefore, a certain amount of laser beam is transmitted, but a certain amount of laser beam is absorbed. It can also be applied to those with a relatively low rate.
  • Center O 2 of the center O 1 and the first resin member 1 and the second resin material 2 of the spherical reflecting surface 4a of the reflective lid 4 described above may be shifted in the vertical direction. If move the center O 1 of the spherical reflecting surface 4a upward, the light reflection of the laser beam is gathered upward.
  • the first resin material 1 and the second resin material 2 have long cross sections as in the first modification of the laser welding apparatus of the first embodiment shown in FIG. Sometimes, the center O 1 of the spherical surface is moved upward, and the reflected light of the laser light is collected at the upper and lower centers of the first resin material 1 and the second resin material 2 to average the heat generation temperature as a whole. Can do.
  • the center O 1 of the spherical surface is moved downward, the reflected light of the laser light gathers below the first resin material 1 and the second resin material 2.
  • the center O 1 of the spherical surface is moved downward, and the first resin material 1 and the second resin material
  • the reflected light of the laser beam can be collected at the upper and lower centers of 2 to average the heat generation temperature as a whole.
  • the method of shifting the center O 1 of the spherical surface of the reflecting surface 4a of the reflecting lid 4 may be set so as to be empirically optimized from the actual laser welding result.
  • FIG. 6 shows a cross-sectional view of the main part showing the locus of the laser beam during the laser beam irradiation of the second modification of the first embodiment of the present invention.
  • the portion 3A of the reflecting jig 3 cut out of the aluminum block is made the height of the recessed groove 3a, that is, the lower half of the first resin material 1 in contact with the recessed groove 3a.
  • the reflecting lid 4P is also made of plastic, and a mirror surface tape (T 1 ) for reflecting laser light is pasted on the surface.
  • the reflecting jig 3 and the reflecting lid 4 in FIG. 1 are formed by cutting an aluminum block, have a certain heat capacity, generate heat by absorbing the laser beam 6, and retain heat, and are radiated from the outer surface. This is as already explained.
  • the portion 3A below the concave groove 3a is directly irradiated with laser light from the laser light irradiation means 5 and becomes high temperature.
  • the wall portion (W), which is the portion 3P above the concave groove 3a, and the reflective lid 4P receive the laser light reflected once or more. Therefore, if the heat is dissipated in the same manner as the portion 3A below the concave groove 3a, a temperature difference is generated.
  • the portion 3A of the reflecting jig 3 cut out of the aluminum block is made to be the height of the concave groove 3a, that is, the first resin material 1 that comes into contact with the concave groove 3a.
  • the wall portion (W) 3P above the concave groove 3a is made of synthetic resin (plastic), and a mirror surface tape (T 2 ) for reflecting laser light is pasted on the surface It is said.
  • the reflection lid 4P is also made of synthetic resin, and a mirror tape (T 1 ) for reflecting laser light is pasted on the surface.
  • the wall (W) made of the plastic part 3P and the reflective lid 4P dissipate the heat transferred from the recessed groove 3a of the aluminum block 3A and the heat of the laser light irradiated as reflected light.
  • the temperature is kept so as to be difficult, and the first resin material 1 and the second resin material 2 are entirely surrounded by substantially the same temperature so that the heat generation temperature is averaged as a whole.
  • FIG. 7 shows a third modification of the laser welding apparatus according to the first embodiment of the present invention used when the first resin material 1 and the second resin material 2 have a long tubular shape in the longitudinal direction.
  • the first resin material 1 and the second resin material 2 are placed on the concave groove 3 a of the reflection jig 3 whose length in the longitudinal direction is increased.
  • the laser beam irradiation means 5 is placed on the reflection lid 4 so that the reflection lid 4 can be moved in the direction indicated by the white arrow (M) in the center of FIG.
  • the reflecting lid 4 is moved in the direction indicated by the white arrow (M) in the center of FIG.
  • the laser light 6 is moved along the length of the first resin material 1 and the second resin material 2 in accordance with the movement of the reflecting lid 4. Irradiate by moving sequentially in the long direction. Since the laser beam 6 repeats reflection within a certain range under the reflecting lid 4, the laser beam 6 generates heat sequentially in the range irradiated with the laser beam 6 of the first resin material 1 and the second resin material 2, and continuously. Laser welded.
  • FIG. 8 is a plan view of the case where the first resin material 1 and the second resin material 2 are laser-welded in a shape bent in the longitudinal direction, and a reflecting jig 3 having a shape bent in the longitudinal direction; A first resin material 1 and a second resin material 2 which are placed in the concave groove 3a of the reflecting jig 3 and bent in the longitudinal direction are shown.
  • the first resin material 1 and the second resin material 2 there is a quadrangular reflection lid 4, and the laser beam irradiation means 5 is integrally attached to the reflection lid 4.
  • white arrows M1 to M3
  • the laser light 6 (not shown in FIG. 8) is sent to the first resin material 1 and the second resin material according to the movement of the reflecting lid 4.
  • the long range of 2 in the longitudinal direction is sequentially moved and irradiated. Since the laser beam 6 is repeatedly reflected within a certain range under the reflecting lid 4, the laser irradiated range of the first resin material 1 and the second resin material 2 sequentially generates heat, and the first resin material 1.
  • the second resin material 2 is continuously laser welded while being bent in the longitudinal direction. In this way, the problem of enabling the supply of a laser welding apparatus capable of continuously welding a long light transmitting resin material is solved.
  • 9A and 9B show a fifth modification of Embodiment 1 of the present invention.
  • 9A and 9B the shape of the concave groove 3a which is the reflection surface of the reflection jig 3 is changed.
  • the lower outer peripheral surface of the first resin material 1, that is, the bottom surface of the concave groove 3a having an arcuate cross section is in contact with the slopes 3b and 3c of the wall (W).
  • the surfaces of the concave groove 3a and the inclined surfaces 3b and 3c of the reflecting jig 3 are mirror-polished finished surfaces, that is, mirror-reflecting surfaces to which no mirror tape is attached.
  • Embodiment 2 of the present invention is a laser welding apparatus in which temperature control means and cooling means for the reflection jig 3 and the reflection lid 4 are added to Embodiment 1 of the present invention.
  • portions corresponding to the respective portions of the first embodiment and performing the same functions are denoted by the same reference numerals and description thereof is omitted.
  • first resin material 1 what is equivalent to the tubular first resin material 1 and fulfills the function of the first resin material 1 is indicated as “first resin material 1” even if it has a flat plate shape.
  • Embodiment 2 will be described with reference to the drawings.
  • FIG. 10 shows a schematic configuration of the laser welding apparatus according to the second embodiment of the present invention.
  • the first resin material 1 and the second resin material 2 are placed in the recess groove 3 a of the reflection jig 3, and the pair of inclined surfaces 3 b and 3 c of the reflection jig 3 are arranged on the outer peripheral surface below the first resin material 1.
  • a reflective lid 4 is placed on the reflective jig 3 with the reflective surface 4a facing down.
  • the reflecting surface 4a is made of a curved surface such as a spherical surface or a cylindrical surface connecting the upper end edges of the inclined surfaces 3b and 3c of the reflecting jig 3 in an arch shape.
  • a laser beam irradiation means 5 is placed on the upper center of the reflection lid 4.
  • a laser beam passage hole 4b is opened at the place where the laser beam irradiation means 5 of the reflecting lid 4 is placed.
  • the laser beam 6 generated by the laser beam irradiation means 5 is irradiated to the first resin material 1 and the second resin material 2 placed in the concave groove 3a of the reflection jig 3 from the laser beam passage hole 4b.
  • a temperature sensor (thermocouple) 7 indicated by black dots in FIG. 10 is embedded in the reflecting jig 3
  • a temperature sensor (thermocouple) 8 is embedded in the reflecting lid 4. .
  • the temperature sensors 7 and 8 are connected to the temperature control means 9.
  • the temperature control means 9 performs on / off control or feedback control on the output of the laser light irradiation means 5 based on the measurement result temperatures of the temperature sensors 7 and 8 to keep the temperature of the reflecting jig 3 and the reflecting lid 4 within a certain range. ing.
  • the temperature sensors 7 and 8 do not directly measure the temperatures of the first resin material 1 and the second resin material 2, the temperature changes of the first resin material 1 and the second resin material 2.
  • the first resin material 1 and the second resin material 2 that are transparent to laser light are set to target temperatures according to the material and size that are actually used.
  • the surface temperature of the first resin material 1 may be directly measured by a non-contact temperature sensor that detects the temperature from infrared information.
  • the structure of the laser welding apparatus using a non-contact temperature sensor is later mentioned using FIG.
  • the temperature of the reflecting jig 3 and the reflecting lid 4 is controlled within a predetermined temperature range to improve the uniformity of the laser welding quality. The problem of enabling supply of a laser welding apparatus is solved.
  • cooling cavities 3 e and 3 f are opened in the reflecting jig 3, and cooling nozzles 10 and 11 for blowing a coolant such as air at room temperature or lower are attached.
  • the cooling cavities 3e and 3f communicate with the outside of the reflecting jig 3, and the coolant sprayed from the cooling nozzles 10 and 11 takes the heat of the reflecting jig 3 together with the heat of the reflecting jig 3. Released to the outside.
  • a cooling nozzle 12 that blows a coolant such as air at room temperature or lower toward the space 3 d below the reflective lid 4 is attached to the reflective lid 4.
  • the space 3d communicates with the outside of the reflecting lid 4, and the coolant sprayed from the cooling nozzle 12 takes the heat of the space 3d and is released to the outside of the reflecting lid 4 together with the heat.
  • the cooling nozzles 10, 11, and 12 are supplied with a coolant such as air at room temperature or lower from the cooling means 13.
  • the cooling means 13 is connected to the temperature control means 9.
  • the temperature control unit 9 controls the cooling unit 13 based on the measurement result temperatures of the temperature sensors (thermocouples) 7 and 8 to control the supply temperature and supply amount of the coolant from the cooling nozzles 10, 11, and 12.
  • the temperature of the reflecting jig 3 and the reflecting lid 4 is cooled within a predetermined temperature range.
  • the second embodiment of the present invention is a laser welding apparatus in which the temperature control means 9 and the cooling means 13 for the reflecting jig 3 and the reflecting lid 4 are added to the first embodiment of the present invention.
  • the cooling nozzles 10, 11 and 12 and the cooling means 13 are further added, after the laser welding is finished, the reflecting jig 3 and the reflecting lid 4 are cooled by the cooling means 13 to shorten the temperature cycle of the laser welding work. This solves the problem of improving the productivity of laser welding.
  • the temperature sensors 7 and 8 are embedded in the reflecting jig 3 and the reflecting lid 4, respectively, and the temperature is controlled by detecting both temperatures. Also good. Also, the cooling nozzles 10, 11, and 12 may be configured to use any one cooling nozzle.
  • Embodiment 3 of the present invention is a laser welding apparatus for laser welding a flat second resin material in the same manner as a flat first resin material that transmits laser light.
  • FIG. 11 shows a schematic configuration of a laser welding apparatus according to Embodiment 3 of the present invention.
  • the flat plate-like first resin material 1 and second resin material 2 are placed in the recess groove 3a of the reflection jig 3 in a state where they are in contact with each other, and a pair of wall portions (W) of the reflection jig 3 are placed.
  • the slopes 3b and 3c are provided so as to open upward from the outer peripheral surface of the first resin material 1, and a reflective lid 4 is mounted on the reflective jig 3 with the reflective surface 4a facing down. Is placed.
  • the reflecting surface 4a is made of a curved surface such as a spherical surface or a cylindrical surface connecting the upper end edges of the inclined surfaces 3b and 3c of the wall portion (W) of the reflecting jig 3.
  • a laser beam irradiation means 5 is placed on the upper center of the reflection lid 4.
  • a laser beam passage hole 4b is opened at the place where the laser beam irradiation means 5 of the reflecting lid 4 is placed.
  • the laser light 6 generated by the laser light irradiation means 5 is applied to the first resin material 1 and the second resin material 2 placed in the concave groove 3 a of the reflection jig 3.
  • the configuration is basically the same as that of the first embodiment of the present invention, but is characterized in that the first resin material and the second resin material to be laser-welded are flat.
  • the recessed groove 3a of the reflecting jig 3 has a recessed groove shape corresponding to the bottom surface 1a and the side surface 1b of the first resin material 1 having a rectangular cross section.
  • the first resin material 1 and the second resin material 2 generate heat by absorbing the laser light at a rate corresponding to the absorption rate of the laser light. Further, if the surface roughness of the contact surfaces of the first resin material 1 and the second resin material 2 is rough, the laser light is reflected by a slight gap between the contact surfaces and generates heat. Then, the first resin material 1 and the second resin material 2 are melted at the contact surfaces, and thereafter, irradiation with the laser light is finished, solidified, and welded.
  • the shape of the concave groove of the reflection jig the same as the shape of the outer periphery of the flat plate-like first resin material, laser welding of the flat plate-like first resin material that transmits laser light and the second resin material I can do it.
  • the laser beam 6 is surely welded when it is irradiated with a pressure applied to the contact surfaces of the flat first resin material 1 and the second resin material 2. Therefore, a pressure is applied to the contact surface of the flat plate-like second resin material 2 in the same manner as the flat plate-like first resin material 1. That is, the pressure applied between the reflecting jig 3 and the reflecting lid 4 is made of a material that transmits laser light more than both the first resin material 1 and the second resin material 2, for example, a bent glass plate.
  • the member 50 is sandwiched and the pressurizing member 50 presses the first resin material 1 and the second resin material 2 against the concave groove 3a of the reflecting jig 3 to apply pressure.
  • First and second modifications of Embodiment 3 12 and 13 show first and second modifications of the third embodiment of the present invention.
  • slopes 3 b and 3 c of the wall (W) are provided so as to open upward from both end edges of the bottom surface of the first resin material 1.
  • slopes 3 b and 3 c of the wall (W) are provided so as to open upward from both end edges of the upper surface of the second resin material 2.
  • the slopes 3b and 3c of the wall (W) are formed according to the material and size of the first resin material 1 and the second resin material 2 and the output of the laser beam output means. Laser welding quality such as laser welding strength can be ensured by selecting either the position shown in FIG. 12 or FIG. In FIGS.
  • a mirror tape (T 2 ) is applied to the surface of the pressurizing member 50, and the laser is applied to the surface of the pressurizing member 50 on the slopes 3 b and 3 c of the wall (W) of the reflecting jig 3.
  • the light 6 is reflected.
  • FIG. 14 shows a third modification of the third embodiment of the present invention.
  • the balloon catheter or catheter tube that is the first resin material or the second resin material is made of a thermoplastic polymer material that is opaque to red light and near infrared light, that is, absorbs red light and near infrared light.
  • the pressurizing member 51A that applies pressure to the first resin material and the second resin material is made of a material that transmits near-infrared laser light and absorbs far-infrared laser light, such as silicon ( A silicon rubber rubber is used which is made opaque by absorbing far-infrared laser light, and a thick quadrilateral plate-shaped pressurizing member 51A is surrounded by an aluminum frame 51B. Supporting structure. This is because it is easier to make the plate-shaped pressurizing member 51A and the frame 51B as separate parts, and strength can be obtained.
  • the first laser light irradiation means 5 ⁇ / b> A that outputs near-infrared laser light and the second laser light irradiation means 5 ⁇ / b> B that outputs far-infrared laser light are mounted on the reflection lid 4.
  • the first laser beam irradiation means 5A is, for example, a semiconductor laser, and the wavelength of the laser beam is in the range of 700 nm to 1200 nm, preferably 800 nm to 1000 nm.
  • the second laser light irradiation means 5B is, for example, a CO2 laser and irradiates far-infrared laser light.
  • the wavelength of the laser beam is 10640 nm, for example.
  • the first laser beam irradiation means 5A outputs a near infrared laser beam Ra, irradiates the pressurizing member 51A, the second resin material 2, and the first resin material 1, and reflects the near infrared laser beam Ra to the reflection jig.
  • the first resin material 1, the second resin material 2, and the pressurizing member 51 ⁇ / b> A are irradiated again and reflected by the reflection surface 4 a of the reflective lid, and the first resin material 1 is reflected again. 1 and the 2nd resin material 2 are heated, and both are welded.
  • the second laser light irradiation means 5B outputs a far-infrared laser and irradiates the pressurizing member 51A to generate heat.
  • the pressurizing member 51A When this pressurizing member 51A generates heat, the upper outer peripheral surface of the second resin member 2 is warmed by the heat of the pressurizing member 51A. Therefore, the first and second resin members are surrounded by the recess groove 3a, the wall (W), and the pressurizing member 51A of the reflecting jig 3 that have risen in temperature to a certain temperature range. Repeated irradiation generates heat and welds.
  • the laser beam irradiation means 5B that outputs a far-infrared laser is used as needed.
  • the curved surface serving as the reflecting surface of the reflecting lid 14 is formed by the cylindrical surface 14e and a pair of inclined surfaces 14f and 14f in the longitudinal direction.
  • the reflection lid 14 is placed on the reflection jig 3.
  • the reflection lid 14 is formed by a cylindrical surface 14e and a pair of inclined surfaces 14f and 14f in the longitudinal direction.
  • a laser beam passage hole 14 b is formed on the upper surface of the reflection lid 14.
  • Isolation walls 14 c and 14 d are provided at both ends in the longitudinal direction of the lower surface of the reflection lid 14 so as to fill a gap around the upper surface of the first resin material 1.
  • the light beam of the laser beam 6 is stopped by a built-in aperture lens (optical lens) 5 a, and the first resin material 1 is formed from a laser beam passage hole 14 b in which the thin laser beam 6 is opened on the upper surface of the reflecting lid 14. And the second resin material 2 is irradiated so as to spread again.
  • the laser beam 6 passes through the laser beam passage hole 14 b formed in the upper surface of the reflection lid 14, it spreads on the upper surface of the first resin material 1 and penetrates the first resin material 1 and the second resin material 2.
  • the light is reflected by the reflecting surface of the concave groove 3a of the reflecting jig 3.
  • the laser beam 6 reflected by the concave groove 3a again passes through the first resin material 1 and the second resin material 2, is reflected by the reflecting surface 14a of the reflecting lid 14, and is reflected by the first resin material 1 and the second resin material 2.
  • the resin material 2 is repeatedly irradiated.
  • FIG. 16 is a cross-sectional view taken along the longitudinal direction of the first resin material 1 of the laser welding apparatus according to Embodiment 4 of the present invention.
  • Separation walls 14c and 14d are provided at both ends of the reflection lid 14 in the longitudinal direction.
  • the isolation walls 14 c and 14 d have a shape extending from the lower surface of the reflecting lid 14 to the outer peripheral surface of the upper half of the first resin material 1.
  • a pair of inclined surfaces 14f and 14f extend obliquely upward from the upper ends of the isolation walls 14c and 14d, and the central portion of the reflecting lid 14 is a cylindrical surface 14e along the longitudinal direction.
  • the inner surfaces of the isolation walls 14c and 14d, the pair of inclined surfaces 14f and 14f, and the cylindrical surface 14e are mirror surfaces, and heat and laser light do not escape from the space 3d facing the outer peripheral surface of the upper half of the first resin material 1. I am doing so.
  • the laser beam guiding portion is provided above the reflecting lid so that the laser beam 6 does not leak from between the laser beam irradiation means 5 and the laser beam passage hole 14b of the reflecting lid. 14 g was formed.
  • the laser light transmitted through the first resin material 1 and the second resin material 2 out of the laser light 6 generated by the laser light irradiation means 5 is reflected on the reflection surface of the concave groove 3 a of the reflection jig 3.
  • the trajectory when reflected toward the outside with respect to the center of the laser light irradiation range is shown.
  • the laser light transmitted through the first resin material 1 and the second resin material 2 is reflected by the concave groove 3a of the reflecting jig 3 and goes outward with respect to the center of the irradiation range, After passing through the resin material 1 and the second resin material 2, the reflection lid 14 moves toward the center of the irradiation range.
  • the isolation walls 14c and 14d, the pair of inclined surfaces 14f and 14f, and the cylindrical surface 14e are formed on the reflection lid 14, the first resin material 1 and the second resin material 2 are long. Even if it is long in the direction, the laser beam irradiation is directed toward the center of the laser beam irradiation range under the reflecting lid 14.
  • the laser light 6 is concentrated on specific portions of the first resin material 1 and the second resin material 2. Instead, the reflection is repeated within a certain length in the longitudinal direction. Within a certain range in the longitudinal direction, the temperature of the first resin material 1 and the second resin material 2 is heated within the certain temperature range. Therefore, the reflecting surface of the reflecting lid 14 can be welded in a wide range in the longitudinal direction by combining the inclined surfaces 14f and 14f at both ends and the central cylindrical surface. (Modification of Embodiment 4) In FIG. 17, the laser welding apparatus of the modification of Embodiment 4 was shown.
  • a pair of traveling wheels 19 sandwiching the side surface of the reflecting jig 3 and a driving wheel 18 driven by a driving motor 17 are attached to the reflecting lid 14 like a self-propelled monorail.
  • the driving motor 17 advances in one direction along the reflecting jig 3 when the driving motor 17 is rotated in one direction. Rotate in the opposite direction and go in the opposite direction. Therefore, by proceeding in combination with forward rotation and reversal, for example, it is possible to advance forward and backward little by little, for example, 2 mm forward and 1 mm backward, 2 mm forward and 1 mm backward again. If the advancement and retreat are repeated and the advancement is made little by little, the first resin material 1 and the second resin material 2 are moved while maintaining a constant temperature in a long range in the longitudinal direction, and are continuously uniform in the longitudinal direction. Can be laser welded.
  • FIG. 5 A fifth embodiment of the present invention is shown in FIG.
  • the laser welding apparatus according to the fifth embodiment of the present invention is a laser welding apparatus in which temperature control and drive control of the drive motor 17 are further added to the configuration of the fourth embodiment of the invention.
  • the temperature of the reflection jig 3 and the reflection lid 14 is detected by using the contact temperature sensors 27 and 28, and the temperature of the reflection jig 3 and the reflection lid 14 is detected, and the reflection lid 14 is attached to the reflection jig 3. It can be moved in the longitudinal direction.
  • the contact-type temperature sensor 28 is used to detect the temperature of the reflective lid 14.
  • the temperature detection of the reflective lid 14 may be a type in which a thermocouple is embedded.
  • the temperature data detected by the temperature sensors 27 and 28 is transmitted to the temperature control means 20a.
  • the temperature control unit 20 a controls the drive control unit 20 b of the drive motor 17 to move the drive motor 17 and move the reflection lid 14 in the longitudinal direction along the side surface of the reflection jig 3.
  • the laser beam irradiation means 5 attached to the reflection lid 14 also moves in the longitudinal direction along the side surface of the reflection jig 3 simultaneously with the reflection lid 14.
  • the operation procedure of the laser welding apparatus of Embodiment 5 of this invention was shown as a flowchart.
  • the laser welding apparatus according to the fifth embodiment of the present invention starts (1) laser light irradiation and traveling at the laser light output level and traveling speed set as initial values. (2) Perform laser beam irradiation and forward travel with initial value setting up to the first predetermined distance (L 1 ). Next, (3) traveling backward by a predetermined distance. Repeat (4) and (2) forward travel and (3) reverse travel. Proceeding to a second predetermined distance (L 2), to change the advancing speed of the laser beam output level, performing driving the laser light irradiation.
  • step ST1 when the operator uses the laser welding apparatus to set the initial values of the laser light output level and the traveling speed (step ST1), the laser welding apparatus starts the laser light output and traveling (step ST2). . After a predetermined time elapses, it is confirmed whether or not the first predetermined distance (L 1 ) has been moved (step ST3). If “No”, the laser beam output and running are continued, and if “Yes”, “predetermined distance ⁇ 1 / n (n is an arbitrary integer)” is moved backward (step ST4).
  • step ST5 it is confirmed whether or not the temperature of the reflecting jig 3 and the reflecting lid 14 is within a predetermined range. If “No”, it is determined whether or not the temperature of the reflecting jig 3 and the reflecting lid 14 is in an abnormal temperature range (step ST10). If “Yes”, the second predetermined distance (L 2 ). It is confirmed whether or not it has moved (step ST6). If “No”, that is, if the second predetermined distance (L 2 ) has not been moved, the process returns to step ST3, and steps ST4 (retreat), ST5 (temperature confirmation), and ST6 (movement distance confirmation) are repeated.
  • step ST6 If “Yes”, that is, the second predetermined distance (L 2 ) is moved in step ST6, the laser light output level, the traveling speed, and n are changed (step ST7). Then, the laser beam output and running are continued, and after a predetermined time has passed, it is confirmed whether or not the third predetermined distance (L 3 ) has been moved (step ST8). If “No”, that is, if the third predetermined distance (L 3 ) has not been moved, the process returns to step ST3 (movement distance confirmation), and steps ST4 (retraction), ST5 (temperature confirmation), ST6 (movement distance confirmation), ST7. The procedure of (changing the laser beam output level, traveling speed, and n) is repeated. If “Yes”, that is, the third predetermined distance (L 3 ) is moved in step ST8, the laser beam output and traveling are stopped (step ST9).
  • step ST5 temperature check
  • the determination in step ST5 is “No”
  • the determination result is “Yes”, that is, the abnormal temperature range, the laser light output level, the traveling speed, and n are set so that the abnormal temperature range returns to the normal temperature range.
  • step ST7 the laser beam output and running are continued.
  • the determination result in step ST10 is “No”, that is, if it is not in the abnormal temperature range, the laser light output level, the traveling speed, and n are not changed and the laser light output and traveling are continued.
  • the fifth embodiment is a laser welding apparatus that combines temperature control and drive control of the drive motor 17.
  • the temperatures of the reflection jig 3 and the reflection lid 14 are measured, and the reflection jig 3 and the reflection lid 14 are measured.
  • the reflecting lid 14 is moved in the longitudinal direction on the reflecting jig 3 in accordance with the temperature of the reflecting jig 3, and the space surrounded by the reflecting jig 3 and the reflecting lid 14 is moved at a predetermined temperature.
  • the first resin material 1 and the second resin material 2 are continuously and uniformly welded in the longitudinal direction.
  • FIG. 19 shows an example that can be used universally by appropriately inputting the first, second, and third predetermined distances (L 1 , L 2 , L 3 ). Of course, any other flow diagram may be used.
  • Embodiment 6 A sixth embodiment of the present invention is shown in FIG.
  • the laser welding apparatus according to the sixth embodiment of the present invention adds a cooling means 29 to the configuration of the fifth embodiment of the present invention, and combines the temperature control means 20a, the drive control means 20b of the drive motor 17 and the cooling means 29 with laser welding. Device.
  • two cooling grooves 3g and 3h for blowing and cooling a coolant such as air having a temperature below room temperature extend in the longitudinal direction.
  • the tips of the cooling nozzles 10 and 11 are attached to the lower arm portion of the reflecting jig 3 toward the cooling grooves 3g and 3h.
  • the cooling nozzle 12 is also attached to the reflection lid 14.
  • the cooling nozzles 10, 11, and 12 are connected to the cooling means 29, and the cooling means 29 sends a cooling material such as air having a temperature below room temperature to each of the cooling nozzles 10, 11, and 12 to cool the reflecting jig 3.
  • the coolant can be supplied to the grooves 3g and 3h and the space below the reflecting lid 14.
  • Other configurations are the same as those shown in FIG. In FIG. In FIG.
  • the operation procedure of FIG. 21 is as follows: (1) Laser light irradiation and running are started at the laser light output level and traveling speed set as initial values. (2) Perform laser beam irradiation and travel with an initial value set up to the first predetermined distance (L 1 ). Next, (3) return by a predetermined distance. (4), (2) and (3) are repeated, and when traveling to the second predetermined distance (L 2 ), the laser light output level and the traveling speed are changed, and laser light irradiation and traveling are performed.
  • the operation procedure of FIG. 21 determines whether or not the temperature of the reflection jig 3 and the reflection lid 14 in step ST10 of the operation procedure of FIG. 19 already described is in an abnormal temperature range (step ST10).
  • the cooling means 29 is operated, and an operation (step ST11) in which the cooling nozzle blows out a coolant such as air at room temperature or lower is added.
  • the reflecting jig and the reflecting lid are forcibly cooled by the cooling means so as to quickly return to the normal temperature range.
  • the operation procedure of FIG. 21 will be described in detail as follows.
  • step ST1 when the operator uses the laser welding device to set the initial values of the laser light output level and the traveling speed (step ST1), the laser welding device starts running with the laser light output (step ST2). . After a predetermined time elapses, it is confirmed whether or not the first predetermined distance (L 1 ) has been moved (step ST3). If “No”, the laser beam output and running are continued, and if “Yes”, “predetermined distance ⁇ 1 / n” is moved backward (step ST4). Then, it is confirmed whether or not the temperature of the jig is within a predetermined range (step ST5).
  • step ST10 If “No”, it is determined whether or not the temperature of the jig is in an abnormal temperature range (step ST10), and if “Yes”, whether or not the second predetermined distance (L 2 ) has been moved. Is confirmed (step ST6). If “No”, that is, if the second predetermined distance (L 2 ) has not been moved, the process returns to step ST3, and steps ST4 (retreat), ST5 (temperature confirmation), and ST6 (movement distance confirmation) are repeated. If “Yes”, that is, the second predetermined distance (L 2 ) is moved in step ST6, the laser light output level, the traveling speed, and n are changed (step ST7).
  • step ST8 it is confirmed whether or not the third predetermined distance (L 3 ) has been moved. If “No”, that is, if the third predetermined distance (L 3 ) has not been moved, the process returns to step ST3, and steps ST4 (retreat), ST5 (temperature confirmation), ST6 (movement distance confirmation), ST7 (laser beam output level) , Change the traveling speed and n). If “Yes”, that is, the third predetermined distance (L 3 ) is moved in step ST8, the laser beam output and traveling are stopped (step ST9).
  • step ST10 it is determined whether or not the temperature of the jig is in an abnormal temperature range. If the result is “Yes”, that is, an abnormal temperature range, the cooling means is operated so as to return from the abnormal temperature range to the normal temperature range, and the cooling nozzle blows out a coolant such as air at room temperature or lower. (Step ST11). Then, returning to step ST5, the cooling operation of step ST11 is repeated until “Yes” in the determination of step ST5, that is, until the temperature of the jig falls within a predetermined range. If the determination result of step ST10 is “No”, that is, it is not in the abnormal temperature range, the process proceeds to step 8 as in the flowchart of FIG.
  • step ST1 “setting of laser beam output level and initial value of traveling speed” in step ST1 is set to “temperature of laser reflecting jig 3 and reflecting lid 4”. If “automatically set based on the optimal initial value” is repeated, the same laser welding operation can be repeated by repeating the flowchart of FIG. Further, after step ST9, if the cooling means is operated and the cooling nozzle blows out a coolant such as air at room temperature or lower, step ST12 of “cooling by the cooling means” is added. The temperature of the reflective lid 4 can be returned to room temperature in a short time.
  • Embodiment 7 of the present invention is characterized in that the surface temperature of the first resin material 1 is directly measured by a non-contact temperature sensor that detects the temperature from infrared information or the like.
  • FIG. 22 shows a cross-sectional view of the main part of the laser welding apparatus according to the seventh embodiment of the present invention. In FIG. 22, a non-contact temperature sensor 38 is attached to the reflective lid 14, and the infrared temperature information on the surface of the first resin material 1 is directly read by the non-contact temperature sensor 38 in a non-contact manner.
  • the temperature is detected by embedding the thermocouples 7 and 8 in the reflecting jig 3 and the reflecting lid 4, respectively. This indirectly measured the temperature of the first resin material 1 and the second resin material 2.
  • the non-contact temperature sensor 38 directly reads the infrared temperature information on the surface of the first resin material 1 in a non-contact manner. Therefore, the surface temperature of the first resin material 1 can be controlled quickly and accurately.
  • the reflecting jig 3 and the reflecting lid 14 which are separate parts which are originally separated are used in an overlapping manner, both are disassembled and the non-contact temperature sensor 38 is disassembled. It is easy to maintain a clean surface. Since other structures are the same as those in the first to seventh embodiments, the description thereof is omitted.
  • FIG. 23 is a cross-sectional view of the main part of the laser welding apparatus according to the sixth embodiment of the present invention.
  • a thin spherical plate is used as the reflective lid 24.
  • the reflecting lid 4 is shown by cutting an aluminum block into a predetermined shape or connecting a slope and a cylindrical surface.
  • a thin aluminum flat plate is used. Is used to make a spherical plate by plastic deformation and a reflective lid 24 having a lower surface as a mirror surface.
  • the material of the reflection lid 24 may be a plastic plate instead of a thin aluminum plate, and a mirror surface tape (T) with a laser beam transmitting hole may be attached to the surface of the plastic plate. Since other structures are the same as those in the first to seventh embodiments, the description thereof is omitted.
  • the reflective lid 44 is made of a resin material that is transparent to laser light, and the reflective surface 44a is formed on the lower surface of the reflective lid 44. In the range through which the laser beam output from the light irradiating means 5 passes, a portion of the laser beam transmitting hole 44H where the reflecting surface 44a is not formed is formed. This is because, even if the reflective lid 44 is a laser beam transmitting resin material as a whole and does not have a breathable hole, if there is a portion through which the laser beam passes optically, that portion is optically It functions as a laser beam passage hole. Since there is no air permeable hole in the reflection lid 44, there is an advantage that heat does not escape from the space above the first resin material 1 to the outside. It has been described that the laser beam passage hole may be a hole through which laser beam is optically transmitted.
  • the first resin material 1 and the second resin material 2 are irradiated with the laser beam 6 by the reflection lid 44 having a laser beam passage hole 44H that optically transmits the laser beam.
  • This is a laser welding apparatus.
  • Laser light is irradiated on the reflective lid 44 without making a breathable laser light passage hole, and heat does not escape from the space above the first resin material 1 to the outside.
  • the second resin material 2 can be welded.
  • the laser light irradiation means 5 is attached to the reflecting jig 3, and the laser light 6 is sent to the first resin material by the reflecting lid 34 having no air-permeable holes.
  • the first resin material 1 is a laser welding apparatus that irradiates the first and second resin materials 2.
  • the first resin material 1 is a so-called reflection furnace type laser welding apparatus that irradiates laser light from a laser light passage hole 3 h provided in the reflection jig 3 without opening a laser light passage hole in the reflection lid 34.
  • the second resin material 2 can be welded.
  • first resin material 1 and the second resin material 2 are tubular resin materials or plate-shaped resin materials.
  • Laser welding of the first resin material 1 and the second resin material 2 having a short cylindrical shape, or the first resin material 1 having a cylindrical or tubular shape and the second resin material having a solid rod shape 2 and laser welding of the block-shaped first resin material 1 and the second resin material 2 can be applied.
  • the present invention provides a hollow first resin material such as a cylinder or a tube, and a hollow second resin material such as a tube or a tube inserted into the first resin material or a solid second such as a rod.
  • a hollow first resin material such as a cylinder or a tube
  • a hollow second resin material such as a tube or a tube inserted into the first resin material or a solid second such as a rod.
  • the resin material can also be applied to the laser welding of the block-shaped first resin material 1 and the second resin material 2.
  • various light-transmitting resin materials can be welded by irradiating with laser light.

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

Abstract

[Problème] Dans le dispositif de soudage au laser classique, sans moyen de sortie laser à rendement élevé, le soudage ne peut pas être effectué correctement, le soudage continu d'un long matériau de résine transmettant la lumière ne peut pas non plus être réalisé correctement, la qualité de soudage n'est pas uniforme, et le rendement est faible. Selon la solution de l'invention, à l'aide d'un gabarit réfléchissant (3) muni d'une rainure en creux (3a) présentant une forme de section transversale correspondant à la forme périphérique externe d'un premier matériau de résine et des parties (3b, 3c) de paroi formées au-dessus des deux côtés de la rainure en creux, la rainure en creux (3a) et les parties (3b, 3c) de paroi présentant chacune des faces réfléchissantes, dont les surfaces réfléchissent la lumière laser, un premier matériau de résine (1) et un deuxième matériau de résine (2) pour transmettre la lumière laser sont montés dans la rainure en creux, un couvercle réfléchissant (4) présentant une face réfléchissante (4a) orientée vers la rainure en creux du gabarit réfléchissant est monté sur le gabarit réfléchissant, la lumière laser est irradiée vers la rainure en creux par un moyen d'irradiation (5) de lumière laser, la lumière laser passant à travers le premier matériau de résine et le deuxième matériau de résine est réfléchie de manière répétée entre des faces réfléchissantes de la rainure en creux et des parties de paroi du gabarit réfléchissant et du couvercle réfléchissant et le premier matériau de résine et le deuxième matériau de résine sont chauffés et soudés.
PCT/JP2016/080713 2016-07-01 2016-10-17 Dispositif de soudage au laser pour résine transmettant la lumière et procédé de soudage au laser pour résine transmettant la lumière WO2018003133A1 (fr)

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JP2016131669A JP6014834B1 (ja) 2016-07-01 2016-07-01 光透過性樹脂のレーザ溶着方法および光透過性樹脂のレーザ溶着装置

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WO2020163363A1 (fr) * 2019-02-05 2020-08-13 Dukane Ias, Llc Système et procédé de soudage au laser d'éléments tubulaires à l'aide d'un réflecteur optique fixe unitaire à surfaces réfléchissantes multiples, et dispositif médical
JP2022128431A (ja) * 2021-02-22 2022-09-01 デューケイン アイエーエス エルエルシー 複数個の反射部分を用いワークピースのアクセス不能エリアにレーザビームを到達させてそのワークピースをレーザ熔接するシステム及び方法
CN116727998A (zh) * 2023-08-14 2023-09-12 河北宾宏石化设备有限公司 一种斜三通管件定位焊接设备
DE102022109123A1 (de) 2022-04-13 2023-10-19 Tox Pressotechnik Gmbh & Co. Kg Fügevorrichtung
US11819940B2 (en) 2019-02-05 2023-11-21 Dukane Ias, Llc Systems and methods for laser-welding a workpiece with a laser beam that reaches inaccessible areas of the workpiece using multiple reflecting parts
US11931823B2 (en) 2019-02-05 2024-03-19 Dukane Ias, Llc Systems and methods for laser-welding a workpiece with a laser beam that reaches inaccessible areas of the workpiece using multiple reflecting parts

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JP2011143653A (ja) * 2010-01-15 2011-07-28 Nitto Denko Corp 樹脂部材のレーザー接合方法

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JP2009248322A (ja) * 2008-04-01 2009-10-29 Ito Yoshihiko レーザー溶着方法
JP2011143653A (ja) * 2010-01-15 2011-07-28 Nitto Denko Corp 樹脂部材のレーザー接合方法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020163363A1 (fr) * 2019-02-05 2020-08-13 Dukane Ias, Llc Système et procédé de soudage au laser d'éléments tubulaires à l'aide d'un réflecteur optique fixe unitaire à surfaces réfléchissantes multiples, et dispositif médical
US10926355B2 (en) 2019-02-05 2021-02-23 Dukane Ias, Llc Systems and methods for laser-welding tubular components using a single, fixed optical reflector with multiple reflecting surfaces
US11819940B2 (en) 2019-02-05 2023-11-21 Dukane Ias, Llc Systems and methods for laser-welding a workpiece with a laser beam that reaches inaccessible areas of the workpiece using multiple reflecting parts
US11931823B2 (en) 2019-02-05 2024-03-19 Dukane Ias, Llc Systems and methods for laser-welding a workpiece with a laser beam that reaches inaccessible areas of the workpiece using multiple reflecting parts
JP2022128431A (ja) * 2021-02-22 2022-09-01 デューケイン アイエーエス エルエルシー 複数個の反射部分を用いワークピースのアクセス不能エリアにレーザビームを到達させてそのワークピースをレーザ熔接するシステム及び方法
DE102022109123A1 (de) 2022-04-13 2023-10-19 Tox Pressotechnik Gmbh & Co. Kg Fügevorrichtung
CN116727998A (zh) * 2023-08-14 2023-09-12 河北宾宏石化设备有限公司 一种斜三通管件定位焊接设备
CN116727998B (zh) * 2023-08-14 2023-10-13 河北宾宏石化设备有限公司 一种斜三通管件定位焊接设备

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