JP5116535B2 - Laser welding method - Google Patents

Laser welding method Download PDF

Info

Publication number
JP5116535B2
JP5116535B2 JP2008094812A JP2008094812A JP5116535B2 JP 5116535 B2 JP5116535 B2 JP 5116535B2 JP 2008094812 A JP2008094812 A JP 2008094812A JP 2008094812 A JP2008094812 A JP 2008094812A JP 5116535 B2 JP5116535 B2 JP 5116535B2
Authority
JP
Japan
Prior art keywords
resin material
thermoplastic resin
laser beam
transparent
laser light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2008094812A
Other languages
Japanese (ja)
Other versions
JP2009248322A (en
Inventor
三紀彦 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Branson Ultrasonics Corp
Original Assignee
Branson Ultrasonics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Branson Ultrasonics Corp filed Critical Branson Ultrasonics Corp
Priority to JP2008094812A priority Critical patent/JP5116535B2/en
Publication of JP2009248322A publication Critical patent/JP2009248322A/en
Application granted granted Critical
Publication of JP5116535B2 publication Critical patent/JP5116535B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1687—Laser beams making use of light guides
    • B29C65/169—Laser beams making use of light guides being a part of the joined article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1687—Laser beams making use of light guides
    • B29C65/169—Laser beams making use of light guides being a part of the joined article
    • B29C65/1693—Laser beams making use of light guides being a part of the joined article in the form of a cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/733—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
    • B29C66/7334—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being glossy or matt, reflective or refractive
    • B29C66/73343—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being glossy or matt, reflective or refractive at least one of the parts to be joined being matt or refractive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/1696—Laser beams making use of masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0031—Refractive

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laser welding method which prevents a laser beam passed through a thermoplastic resin material having permeability with respect to the laser beam from reaching a part for avoiding the welding of the thermoplastic resin material having no permeability with respect to the laser beam and allows a high energy to absorb into a welding part by gathering the laser beam which enters the inside of the thermoplastic resin material having permeability with respect to the laser beam and is refracted, with a straight advancing laser beam. <P>SOLUTION: The laser beam 2 is entered into the surface at the incident side of the thermoplastic resin material 4 having permeability with respect to the laser beam by a projection 4A having a triangular cross section, and inclined surfaces 6, 6 for refracting the incident laser beam 2 to a desired direction are formed. The laser beam which enters the inside of the thermoplastic resin material 4 having the permeability with respect to the laser beam by the inclined surfaces 6, 6, and the laser beam 2 passing therethrough is refracted to be directed only to the welding part M. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、樹脂材のレーザー溶着方法に関するものである。   The present invention relates to a method for laser welding a resin material.

樹脂材同士を接合する方法の一つにレーザー溶着方法がある。それは、加熱源としてのレーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材とを重合し、レーザー光に対して透過性のある熱可塑性樹脂材側からレーザー光を照射して、これらの樹脂材の当接界面で吸収されるエネルギーにより相互に熱溶融させて溶着するものである。   One method for joining resin materials is a laser welding method. It is a thermoplastic resin that is transparent to laser light by polymerizing a thermoplastic resin material that is transparent to laser light as a heating source and a thermoplastic resin material that is not transparent to laser light. Laser light is irradiated from the resin material side, and is melted and welded to each other by the energy absorbed at the contact interface of these resin materials.

そしてまた、該レーザー溶着方法において、レーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材との間において非溶着部分を生じさせるようになす場合がある。   Further, in the laser welding method, a non-welded portion is generated between a thermoplastic resin material that is transmissive to laser light and a thermoplastic resin material that is not transmissive to laser light. There is a case.

斯かる場合において、従来は非溶着部分の位置におけるレーザー光に対して透過性のある熱可塑性樹脂材とレーザー光に対して透過性のない熱可塑性樹脂材の当接界面に空間Ｓを設け、この状態においてレーザー光を照射することによって行っていた。図１２は斯かる従来例の説明図であり、１００はレーザー光源、１０１はレーザー光、１０２は集光ガイドである。１０３はレーザー光に対して透過性のある熱可塑性樹脂材、１０４はレーザー光に対して透過性のない熱可塑性樹脂材であり、これらの非溶着部分の位置における当接界面には空間Ｓを設けている。   In such a case, conventionally, a space S is provided at the abutting interface between the thermoplastic resin material that is transparent to the laser beam and the thermoplastic resin material that is not transparent to the laser beam at the position of the non-welded portion, In this state, the laser beam was irradiated. FIG. 12 is an explanatory diagram of such a conventional example, in which 100 is a laser light source, 101 is a laser beam, and 102 is a condensing guide. 103 is a thermoplastic resin material that is transparent to laser light, and 104 is a thermoplastic resin material that is not transparent to laser light. A space S is formed at the contact interface at the position of these non-welded portions. Provided.

しかし、斯かる場合には、レーザー光に対して透過性のある熱可塑性樹脂材１０３に入射したレーザー光１０１が全て直進し、レーザー光に対して透過性のない熱可塑性樹脂材１０４の非溶着部分１０４ａにも到達することになる。そして該非溶着部分１０４ａの表面が熱によって溶けるという問題点がある。   However, in such a case, all of the laser light 101 that has entered the thermoplastic resin material 103 that is transparent to the laser light travels straight, and the non-welding of the thermoplastic resin material 104 that is not transparent to the laser light. The portion 104a is also reached. There is a problem that the surface of the non-welded portion 104a is melted by heat.

本発明は上記の点に鑑みなされたものであって、レーザー光に対して透過性のある熱可塑性樹脂材の入射側の表面に、レーザー光を入射させると共に入射したレーザー光を所望の方向に屈折させる傾斜面又は彎曲面を形成し、前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射したレーザー光を屈折及び反射させて溶着部分のみに向かわせるようになし、もってレーザー光に対して透過性のある熱可塑性樹脂材を透過したレーザー光がレーザー光に対して透過性のない熱可塑性樹脂材の溶着を避けたい部分に到達しないようにすると共に、レーザー光に対して透過性のある熱可塑性樹脂材内に入射した、屈折及び反射したレーザー光と直進したレーザー光とを集合させることにより、溶着部分に高エネルギーを吸収させることができるようになしたレーザー溶着方法を提供しようとするものである。 The present invention has been made in view of the above points. The laser beam is incident on the surface of the thermoplastic resin material that is transparent to the laser beam, and the incident laser beam is directed in a desired direction. deflect to form an inclined surface or curved surface, without to direct only the welding portions refraction and reflects the laser light incident on a transmissive thermoplastic resin material in respect to the laser beam, it has been laser Laser light that has passed through a thermoplastic resin material that is transparent to light is prevented from reaching the part where it is desired to avoid welding of a thermoplastic resin material that is not transparent to laser light. incident on a transmissive thermoplastic resin material within, by a set of a laser beam straight and refraction and reflected laser light, making it possible to absorb the high energy welding portion It is intended to provide a laser welding method no to so that.

而して、本発明の要旨とするところは、加熱源としてのレーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材とを重合し、レーザー光に対して透過性のある熱可塑性樹脂材側からレーザー光を照射して、これらの樹脂材の当接界面で吸収されるエネルギーにより相互に熱溶融させて融着するものであって、且つ前記レーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材との間において非溶着部分を生じさせるようになしたレーザー溶着方法において、前記レーザー光に対して透過性のある熱可塑性樹脂材の入射側の表面に、前記レーザー光を入射させると共に入射したレーザー光を所望の方向に屈折させる傾斜面又は彎曲面を形成し、前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射し、これを透過する前記レーザー光を屈折及び反射させて溶着部分のみに向かわせるようになしたレーザー溶着方法であって、前記レーザー光に対して透過性のある熱可塑性樹脂材の前記レーザー光に対して透過性のない熱可塑性樹脂材との当接面に、その非溶着部分の外側の位置において溶着部分を残して所要の高さの垂直壁面若しくは傾斜面又は彎曲面を設け、該垂直壁面若しくは傾斜面又は彎曲面をもって前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射し、屈折したレーザー光を全反射させ、該全反射したレーザー光を溶着部分のみに向かわせるようになしたことを特徴とするレーザー溶着方法にある。 Thus, the gist of the present invention is to polymerize a thermoplastic resin material that is transparent to laser light as a heating source and a thermoplastic resin material that is not transparent to laser light, A laser beam is irradiated from the thermoplastic resin material side that is transparent to the laser beam, and is melted and fused by energy absorbed by the contact interface of these resin materials, In the laser welding method, a non-welded portion is formed between the thermoplastic resin material that is transparent to the laser beam and the thermoplastic resin material that is not transparent to the laser beam. An inclined surface or curved surface is formed on the incident surface of the thermoplastic resin material that is transmissive to the laser beam, and the laser beam is incident and the incident laser beam is refracted in a desired direction. Incident on a transmissive thermoplastic resin material in respect over light, which a record Za welding method without to direct only the welding portions refraction and by reflecting the laser light passing through, On the contact surface of the thermoplastic resin material that is transparent to the laser light with the thermoplastic resin material that is not transparent to the laser light, leaving a welded portion at a position outside the non-welded portion. A vertical wall surface or inclined surface or a curved surface having a required height is provided, and the refracted laser light is incident on the vertical wall surface, the inclined surface, or the curved surface and enters the thermoplastic resin material that is transparent to the laser light. The laser welding method is characterized in that the laser beam is totally reflected, and the totally reflected laser light is directed only to the welded portion .

また、加熱源としてのレーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材とを重合し、レーザー光に対して透過性のある熱可塑性樹脂材側からレーザー光を照射して、これらの樹脂材の当接界面で吸収されるエネルギーにより相互に熱溶融させて融着するものであって、且つ前記レーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材との間において非溶着部分を生じさせるようになしたレーザー溶着方法において、前記レーザー光に対して透過性のある熱可塑性樹脂材の入射側の表面に、前記レーザー光を入射させると共に入射したレーザー光を所望の方向に屈折させる傾斜面又は彎曲面を形成し、前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射し、これを透過する前記レーザー光を屈折及び反射させて溶着部分のみに向かわせるようになしたレーザー溶着方法であって、前記レーザー光に対して透過性のある熱可塑性樹脂材の非溶着部分の位置の空間を傾斜面となし、該傾斜面により前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射し、屈折したレーザー光を全反射させ、且つ全反射したレーザー光を溶着部分に向かわせるようになしたことを特徴とするレーザー溶着方法をもその要旨とするものである。 In addition, a thermoplastic resin material that is transparent to laser light as a heating source and a thermoplastic resin material that is not transparent to laser light are polymerized to produce a thermoplastic material that is transparent to laser light. Laser light is irradiated from the resin material side and melted and fused with energy absorbed at the contact interface of these resin materials, and is transparent to the laser light. In a laser welding method in which a non-welded portion is formed between a thermoplastic resin material and a thermoplastic resin material that is not transparent to laser light, the thermoplastic material that is transparent to the laser light. An inclined surface or a curved surface is formed on the surface on the incident side of the resin material so that the laser beam is incident and the incident laser beam is refracted in a desired direction. A laser welding method in which the laser beam incident on the transparent resin material is refracted and reflected so as to be directed only to the welded portion, and is thermoplastic with transparency to the laser beam. A space at the position of the non-welded portion of the resin material is formed as an inclined surface, and the inclined surface enters the thermoplastic resin material that is transmissive to the laser light, totally reflects the refracted laser light, and The gist of the present invention is also a laser welding method characterized in that the reflected laser beam is directed toward the welded portion .

本発明は、上記の如くレーザー光に対して透過性のある熱可塑性樹脂材の入射側の表面に、前記レーザー光を入射させると共に入射したレーザー光を所望の方向に屈折させる傾斜面又は彎曲面を形成し、前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射し、これを透過する前記レーザー光を屈折及び反射させて溶着部分のみに向かわせるようになしたものであるから、レーザー光に対して透過性のある熱可塑性樹脂材を透過したレーザー光がレーザー光に対して透過性のない熱可塑性樹脂材の溶着を避けたい部分に到達しないようにすると共に、レーザー光に対して透過性のある熱可塑性樹脂材内に入射した、屈折及び反射したレーザー光と直進したレーザー光とを集合させることにより、溶着部分に高エネルギーを吸収させることができるものである。 The present invention provides an inclined surface or curved surface that causes the laser light to enter and refract the incident laser light in a desired direction on the surface of the thermoplastic resin material that is transparent to the laser light as described above. to form a, it enters the thermoplastic resin material in which a transparent to the laser beam, in which it was no so as to be refraction and by reflecting the laser light transmitted toward only the welding portion Therefore, the laser beam that has passed through the thermoplastic resin material that is transparent to the laser beam does not reach the portion where it is desired to avoid the welding of the thermoplastic resin material that is not transparent to the laser beam. incident on a transmissive thermoplastic resin material in hand, by a set of a laser beam straight and refraction and reflected laser light, thereby absorbing the high energy welding portion One in which it is bet.

以下、本発明に係るレーザー溶着方法を実施するための最良の形態について説明する。   Hereinafter, the best mode for carrying out the laser welding method according to the present invention will be described.

図１は本発明に係るレーザー溶着方法の基となる第１の基本構成例の説明図である。 Figure 1 is an illustration of a first basic configuration example underlying the laser welding method in accordance with the present invention.

図中、１、２は加熱源としてのレーザー光であり、１は後記レーザー光に対して透過性のある熱可塑性樹脂材を直進するレーザー光、２は屈折するレーザー光である。また、３は集光ガイドである。尚、レーザー光源については図示を省略している。而して、本構成例に係るレーザー溶着方法は、レーザー光に対して透過性のある熱可塑性樹脂材４と、レーザー光に対して透過性のない熱可塑性樹脂材５とを重合し、レーザー光に対して透過性のある熱可塑性樹脂材４側からレーザー光１、２を照射して、これらの熱可塑性樹脂材４、５の当接界面で吸収されるエネルギーにより相互に熱溶融させて融着するものであって、且つ前記レーザー光に対して透過性のある熱可塑性樹脂材４と、レーザー光に対して透過性のない熱可塑性樹脂材５との間において非溶着部分を生じさせるようになしたレーザー溶着方法である点においては従来のレーザー溶着方法と同様である。尚、Ｓは非溶着部分の位置におけるレーザー光に対して透過性のある熱可塑性樹脂材４とレーザー光に対して透過性のない熱可塑性樹脂材５の当接界面に設けた空間である。そして、本構成例において特徴とする点は、前記レーザー光に対して透過性のある熱可塑性樹脂材４の入射側の表面に、前記レーザー光２を入射させると共に入射したレーザー光２を所望の方向に屈折させる傾斜面６、６又は彎曲面（図示せず。）を形成し、前記レーザー光に対して透過性のある熱可塑性樹脂材４内に入射し、これを透過する前記レーザー光２を屈折させて溶着部分Ｍのみに向かわせるようになしたことにある。 In the figure, 1 and 2 are laser beams as heating sources, 1 is a laser beam that travels straight through a thermoplastic resin material that is transparent to the laser beam described later, and 2 is a refracting laser beam. Reference numeral 3 denotes a light collecting guide. Note that illustration of the laser light source is omitted. Thus, in the laser welding method according to this structural example , the thermoplastic resin material 4 that is transmissive to laser light and the thermoplastic resin material 5 that is not transmissive to laser light are polymerized to form a laser. Laser light 1 and 2 are irradiated from the side of the thermoplastic resin material 4 that is transparent to light, and the two are melted mutually by the energy absorbed at the contact interface between these thermoplastic resin materials 4 and 5. A non-welded portion is formed between the thermoplastic resin material 4 that is fused and transparent to the laser light and the thermoplastic resin material 5 that is not transparent to the laser light. It is the same as the conventional laser welding method in that the laser welding method is performed as described above. In addition, S is a space provided at the contact interface between the thermoplastic resin material 4 that is transmissive to the laser light and the thermoplastic resin material 5 that is not transmissive to the laser light at the position of the non-welded portion. A feature of the present structural example is that the laser light 2 is incident on the incident surface of the thermoplastic resin material 4 that is transmissive to the laser light, and the incident laser light 2 is desired. The laser light 2 that forms an inclined surface 6 or 6 or a curved surface (not shown) that is refracted in the direction, enters the thermoplastic resin material 4 that is transmissive to the laser light, and passes through this. Is refracted to be directed only to the welded portion M.

また、本構成例においては、前記傾斜面６、６は、非溶着部分の位置の空間Ｓの直上に位置させた断面三角形状の突起４Ａによって形成している。 Further, in the present configuration example , the inclined surfaces 6 and 6 are formed by the protrusion 4A having a triangular cross-section located immediately above the space S at the position of the non-welded portion.

また、本構成例において、前記傾斜面６、６の傾斜角度は、スネルの法則に従って算出決定された傾斜角度としている。ここで、斯かるスネルの法則について、図２を参照しつつ簡単に説明する。スネルの法則は、光線が平面（屈折率の異なる媒質の境界）に入射した場合の入射角と出射角（更に、媒質の屈折率）の関係を示す法則であり、図２に示すように、光線の入射角θ１、屈折角（出射角）θ２、反射角θ３、入射側媒質の屈折率ｎ１、出射側の屈折率ｎ２とすると、スネルの法則は、
ｎ１ｓｉｎθ１＝ｎ２ｓｉｎθ２
となる。但し、ｎ１＜ｎ２とする。 In the present configuration example , the inclination angles of the inclined surfaces 6 and 6 are inclination angles calculated and determined according to Snell's law. Here, the Snell's law will be briefly described with reference to FIG. Snell's law is a law showing the relationship between the incident angle and the outgoing angle (further, the refractive index of the medium) when a light ray is incident on a plane (boundary of a medium having a different refractive index). As shown in FIG. Assuming that the incident angle θ1, the refraction angle (emission angle) θ2, the reflection angle θ3, the refractive index n1 of the incident side medium, and the refractive index n2 on the outgoing side of the light ray, Snell's law is
n1sin θ1 = n2sin θ2
It becomes. However, n1 <n2.

次に、本構成例における屈折角の算出方法について具体例を挙げて説明する。
図３は空気からプラスチック（アクリル）にレーザー光が入射される場合の例である。 尚、図３において入射角：θ１、屈折角（出射角）：θ２とすると、スネルの法則より ｎ１×ｓｉｎθ１＝ｎ２×ｓｉｎθ２
となる。但し、ｎ１＜ｎ２の場合。
そこで、図３において空気の屈折率：ｎ１＝１．０、アクリルの屈折率：ｎ２＝１．４９、入射角：θ１＝６５〔°〕とすると、スネルの法則より１．０×ｓｉｎ６５＝１．４９×ｓｉｎθ２となる。そして斯かる式より最終的に屈折角（出射角）θ２≒３７．５〔°〕となる。 Next, a method for calculating the refraction angle in this configuration example will be described with a specific example.
FIG. 3 shows an example in which laser light is incident on plastic (acrylic) from the air. In FIG. 3, assuming that the incident angle is θ1 and the refraction angle (outgoing angle) is θ2, from Snell's law, n1 × sin θ1 = n2 × sin θ2.
It becomes. However, when n1 <n2.
Therefore, in FIG. 3, assuming that the refractive index of air is n1 = 1.0, the refractive index of acrylic is n2 = 1.49, and the incident angle is θ1 = 65 [°], 1.0 × sin65 = 1 according to Snell's law. 49 × sin θ2. From such an expression, the refraction angle (exit angle) θ2≈37.5 [°] is finally obtained.

次に、図４に示す他の例について説明する。図４に示す例は、空気からプラスチック（ポリカーボネート）にレーザー光が入射される場合の例である。
図４において空気の屈折率：ｎ１＝１．０、ポリカーボネートの屈折率：ｎ２＝１．５９、入射角：θ１＝５５〔°〕とすると、スネルの法則より１．０×ｓｉｎ５５＝１．５９×ｓｉｎθ２となる。そして斯かる式より最終的に屈折角（出射角）θ２≒３１．０〔°〕となる。 Next, another example shown in FIG. 4 will be described. The example shown in FIG. 4 is an example in which laser light is incident on plastic (polycarbonate) from air.
In FIG. 4, assuming that the refractive index of air is n1 = 1.0, the refractive index of polycarbonate is n2 = 1.59, and the incident angle is θ1 = 55 [°], 1.0 × sin55 = 1.59 according to Snell's law. Xsin θ2. From such an expression, the refraction angle (exit angle) θ2≈31.0 [°] is finally obtained.

次に、図５に示した本発明に係るレーザー溶着方法の基となる第２の基本構成例について説明する。
本構成例における前記第１の基本構成例との相違点は、前記第１の基本構成例においては傾斜面６、６を非溶着部分の位置の空間Ｓの直上に位置させた断面三角形状の突起４Ａによって形成しているのに対して、本構成例においては断面三角形状の凹部４Ｂによって形成している点にある。尚、その他の点においては前記第１の基本構成例と同様であるから、同一の部材には同一の符号を付して詳細な説明は省略する。 Next, a second basic configuration example as a basis of the laser welding method according to the present invention shown in FIG. 5 will be described.
Differences between the first basic configuration example of the present configuration example, the triangular cross-section was located directly above the space S at the position of the non-welded portion inclined surfaces 6,6 in the first basic configuration example In contrast to the projection 4A, the present configuration example is formed by a recess 4B having a triangular cross section. Since other points are the same as those of the first basic configuration example , the same members are denoted by the same reference numerals and detailed description thereof is omitted.

次に、図６に示した本発明に係るレーザー溶着方法の基となる第３の基本構成例について説明する。
本構成例における前記第１の基本構成例との相違点は、前記第１の基本構成例においては傾斜面６、６を断面三角形状の突起４Ａによって形成しているのに対して、本構成例においてはレーザー光に対して透過性のある熱可塑性樹脂材４の入射側の表面に段差４Ｃを設けることによって形成している点にある。そしてまた、本構成例における傾斜面６は平面としている。尚、その他の点においては前記第１の基本構成例と同様であるから、同一の部材には同一の符号を付して詳細な説明は省略する。 Next, a third basic configuration example as a basis of the laser welding method according to the present invention shown in FIG. 6 will be described.
Differences between the first basic configuration example of this configuration example is that the forms by a triangular cross section projection 4A inclined surfaces 6,6 in the first basic configuration example, the configuration In the example , the step is formed by providing a step 4C on the surface of the incident side of the thermoplastic resin material 4 that is transmissive to the laser beam. The inclined surface 6 in this configuration example is a flat surface. Since other points are the same as those of the first basic configuration example , the same members are denoted by the same reference numerals and detailed description thereof is omitted.

また、図７及び図８は、前記本発明の第３の基本構成例の変形例を示すものであり、図７は傾斜面６を凸形彎曲面とし、また図８は傾斜面６を凹形彎曲面としている場合である。尚、その他の点においては前記第３の基本構成例と同様であるから、同一の部材には同一の符号を付して詳細な説明は省略する。 7 and 8 show modifications of the third basic configuration example of the present invention. FIG. 7 shows the inclined surface 6 as a convex saddle surface, and FIG. 8 shows the inclined surface 6 as a concave. This is a case of a curved surface. Since the other points are the same as those of the third basic configuration example , the same members are denoted by the same reference numerals and detailed description thereof is omitted.

次に、図９に示した、上記基本構成例に基く本発明に係るレーザー溶着方法について説明する。
本構成例は、レーザー光に対して透過性のある熱可塑性樹脂材４の入射側の表面に、前記レーザー光２を入射させると共に入射したレーザー光２を所望の方向に屈折させる傾斜面６、６又は彎曲面（図示せず。）を形成し、前記レーザー光に対して透過性のある熱可塑性樹脂材４内に入射し、これを透過する前記レーザー光２を屈折及び反射させて溶着部分Ｍのみに向かわせるようになしたものである。また、本構成例においては、傾斜面６、６を、非溶着部分の位置の空間Ｓの直上に位置させた断面三角形状の突起４Ａによって形成している。 Next, as shown in FIG. 9 will be described about the laser welding how according to the present invention based on the above basic configuration example.
In this configuration example , an inclined surface 6 that causes the laser light 2 to enter and refract the incident laser light 2 in a desired direction on the incident-side surface of the thermoplastic resin material 4 that is transparent to the laser light. 6 or a curved surface (not shown) is formed, enters the thermoplastic resin material 4 that is transmissive to the laser light, and refracts and reflects the laser light 2 that passes through the thermoplastic resin material 4, thereby welding portions. it is that none to direct only to M. Further, in the present configuration example , the inclined surfaces 6 and 6 are formed by the projection 4A having a triangular cross-section located immediately above the space S at the position of the non-welded portion.

そして、本構成例は、斯かるものにおいて、前記レーザー光に対して透過性のある熱可塑性樹脂材４の前記レーザー光に対して透過性のない熱可塑性樹脂材５との当接面に、その非溶着部分の位置の空間Ｓの外側の位置において溶着部分Ｍを残して所要の高さの傾斜面４Ｄ、４Ｄを設け、該傾斜面４Ｄ、４Ｄをもって前記レーザー光に対して透過性のある熱可塑性樹脂材４内に入射し、屈折したレーザー光２を全反射させ、該全反射したレーザー光２を溶着部分Ｍのみに向かわせるようになしたものである。 The present configuration example, in which such, the contact surface between the thermoplastic resin material 5 no transparent to the laser light of a transmissive thermoplastic resin material 4 with respect to the laser beam, The inclined surfaces 4D and 4D having a required height are provided in the position outside the space S at the position of the non-welded portion, leaving the welded portion M, and the inclined surfaces 4D and 4D are transparent to the laser light. The laser beam 2 incident and refracted in the thermoplastic resin material 4 is totally reflected, and the totally reflected laser beam 2 is directed only to the welded portion M.

次に、図１０に示した前記図９の構成例の変形例について説明する。
本構成例は、傾斜面６、６を、非溶着部分の位置の空間Ｓの直上に位置させた断面三角形状の凹部４Ｂによって形成している点において前記図９の構成例と相違するものである。また、その他の点においては前記図９の構成例と同様であるから、同一の部材には同一の符号を付して詳細な説明は省略する。 Next, a modification of the configuration example of FIG. 9 shown in FIG. 10 will be described.
This configuration example is different from the configuration example of FIG. 9 in that the inclined surfaces 6 and 6 are formed by the concave section 4B having a triangular cross section positioned just above the space S at the position of the non-welded portion . is there. In other respects, the configuration is the same as that of the configuration example of FIG. 9 , and the same members are denoted by the same reference numerals and detailed description thereof is omitted.

次に、図１１に示した、上記基本構成例に基く本発明に係るレーザー溶着方法の他の構成例について説明する。
本構成例も前記図９及び図１０に示した構成例と同様に、レーザー光に対して透過性のある熱可塑性樹脂材４の入射側の表面に、前記レーザー光２を入射させると共に入射したレーザー光２を所望の方向に屈折させる傾斜面６、６又は彎曲面（図示せず。）を形成し、前記レーザー光に対して透過性のある熱可塑性樹脂材４内に入射し、これを透過する前記レーザー光２を屈折及び反射させて溶着部分Ｍのみに向かわせるようになしたものである。また、傾斜面６、６を、非溶着部分の位置の空間Ｓの直上に位置させた断面三角形状の突起４Ａによって形成していることも同様である。 Next, another configuration example of the laser welding method according to the present invention based on the basic configuration example shown in FIG. 11 will be described.
Similarly to the configuration examples shown in FIGS. 9 and 10, this configuration example also makes the laser beam 2 incident and incident on the surface on the incident side of the thermoplastic resin material 4 that is transmissive to the laser beam. An inclined surface 6 or 6 or a curved surface (not shown) that refracts the laser beam 2 in a desired direction is formed, and is incident on a thermoplastic resin material 4 that is transparent to the laser beam. the laser beam 2 transmitted through refraction and is reflected is obtained without to direct only the welded portion M. Similarly, the inclined surfaces 6 and 6 are formed by the protrusions 4A having a triangular cross section positioned directly above the space S at the position of the non-welded portion.

そして、本構成例は、斯かるものにおいて、前記レーザー光に対して透過性のある熱可塑性樹脂材４の非溶着部分の位置の空間Ｓを傾斜面となし、該傾斜面４Ｅにより前記レーザー光に対して透過性のある熱可塑性樹脂材４内に入射し、屈折したレーザー光２を全反射させ、且つ全反射したレーザー光２を溶着部分Ｍに向かわせるようになしたものである。 The present configuration example, in which such, the laser light space S at the position of the non-welded portions of the thermoplastic resin material 4 is transparent inclined surface and without, the inclined surface 4E to the laser beam In this case, the laser beam 2 is incident into the transmissive thermoplastic resin material 4 and is totally reflected, and the totally reflected laser beam 2 is directed to the welded portion M.

本発明に係るレーザー溶着方法の基となる第１の基本構成例の説明図である。It is an explanatory view of a first basic configuration example underlying the laser welding method in accordance with the present invention. スネルの法則の説明図である。It is explanatory drawing of Snell's law. 本発明における屈折角の算出方法の具体例を示す説明図である。It is explanatory drawing which shows the specific example of the calculation method of the refraction angle in this invention. 本発明における屈折角の算出方法の他の具体例を示す説明図である。It is explanatory drawing which shows the other specific example of the calculation method of the refraction angle in this invention. 本発明に係るレーザー溶着方法の基となる第２の基本構成例の説明図である。It is an explanatory view of a second basic configuration example of a group of laser welding method according to the present invention. 本発明に係るレーザー溶着方法の基となる第３の基本構成例の説明図である。It is an explanatory view of a third basic configuration example underlying the laser welding method in accordance with the present invention. 本発明に係るレーザー溶着方法の基となる第３の基本構成例の変形例の説明図である。It is an explanatory view of a modification of the third basic configuration example underlying the laser welding method in accordance with the present invention. 本発明に係るレーザー溶着方法の基となる第３の基本構成例の他の変形例の説明図である。It is an explanatory view of another modification of the third basic configuration example underlying the laser welding method in accordance with the present invention. 本発明に係るレーザー溶着方法の第１の構成例の説明図である。It is explanatory drawing of the 1st structural example of the laser welding method which concerns on this invention. 本発明に係るレーザー溶着方法の第１の構成例の変形例の説明図である。It is explanatory drawing of the modification of the 1st structural example of the laser welding method which concerns on this invention. 本発明に係るレーザー溶着方法の第２の構成例の説明図である。It is explanatory drawing of the 2nd structural example of the laser welding method which concerns on this invention. 従来のレーザー溶着方法の説明図である。It is explanatory drawing of the conventional laser welding method.

１、２ レーザー光
３ 集光ガイド
４ レーザー光に対して透過性のある熱可塑性樹脂材
４Ａ 断面三角形状の突起
４Ｂ 断面三角形状の凹部
４Ｃ 段差
４Ｄ 非溶着部分外側のレーザー光が全反射する傾斜面
４Ｅ 非溶着部分の位置の空間Ｓの傾斜面
５ レーザー光に対して透過性のない熱可塑性樹脂材
６ レーザー光を屈折させる傾斜面
Ｓ 非溶着部分の位置の空間
Ｍ 溶着部分

DESCRIPTION OF SYMBOLS 1, 2 Laser light 3 Condensing guide 4 Thermoplastic resin material which is transparent with respect to laser light 4A Triangular cross-sectional protrusion 4B Recessed triangular cross-section 4C Step 4D Inclination in which laser light outside the non-welded portion is totally reflected Surface 4E Inclined surface of the space S at the position of the non-welded portion 5 Thermoplastic resin material that does not transmit laser light 6 Inclined surface that refracts the laser light S Space at the position of the non-welded portion M Welded portion

Claims (2)

加熱源としてのレーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材とを重合し、レーザー光に対して透過性のある熱可塑性樹脂材側からレーザー光を照射して、これらの樹脂材の当接界面で吸収されるエネルギーにより相互に熱溶融させて融着するものであって、且つ前記レーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材との間において非溶着部分を生じさせるようになしたレーザー溶着方法において、
前記レーザー光に対して透過性のある熱可塑性樹脂材の入射側の表面に、前記レーザー光を入射させると共に入射したレーザー光を所望の方向に屈折させる傾斜面又は彎曲面を形成し、前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射し、これを透過する前記レーザー光を屈折及び反射させて溶着部分のみに向かわせるようになしたレーザー溶着方法であって、
前記レーザー光に対して透過性のある熱可塑性樹脂材の前記レーザー光に対して透過性のない熱可塑性樹脂材との当接面に、その非溶着部分の外側の位置において溶着部分を残して所要の高さの垂直壁面若しくは傾斜面又は彎曲面を設け、該垂直壁面若しくは傾斜面又は彎曲面をもって前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射し、屈折したレーザー光を全反射させ、該全反射したレーザー光を溶着部分のみに向かわせるようになしたことを特徴とするレーザー溶着方法。 A thermoplastic resin material that is transparent to laser light as a heating source is polymerized with a thermoplastic resin material that is transparent to laser light and a thermoplastic resin material that is not transparent to laser light. A thermoplastic that is irradiated with laser light from the side and melts and fuses with the energy absorbed at the contact interface of these resin materials, and is transparent to the laser light. In the laser welding method in which a non-welded portion is generated between the resin material and the thermoplastic resin material that is not transparent to the laser beam,
An inclined surface or a curved surface is formed on the incident-side surface of the thermoplastic resin material that is transmissive to the laser beam, and the laser beam is incident and the incident laser beam is refracted in a desired direction. incident on the thermoplastic resin material in which a transparent to light, which a record Za welding method without to direct only the welding portions refraction and by reflecting the laser light passing through,
On the contact surface of the thermoplastic resin material that is transparent to the laser light with the thermoplastic resin material that is not transparent to the laser light, leaving a welded portion at a position outside the non-welded portion. A vertical wall surface or inclined surface or a curved surface having a required height is provided, and the refracted laser light is incident on the vertical wall surface, the inclined surface, or the curved surface and enters the thermoplastic resin material that is transparent to the laser light. A laser welding method, wherein the laser beam is totally reflected, and the totally reflected laser beam is directed only to a welded portion. 加熱源としてのレーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材とを重合し、レーザー光に対して透過性のある熱可塑性樹脂材側からレーザー光を照射して、これらの樹脂材の当接界面で吸収されるエネルギーにより相互に熱溶融させて融着するものであって、且つ前記レーザー光に対して透過性のある熱可塑性樹脂材と、レーザー光に対して透過性のない熱可塑性樹脂材との間において非溶着部分を生じさせるようになしたレーザー溶着方法において、A thermoplastic resin material that is transparent to laser light as a heating source is polymerized with a thermoplastic resin material that is transparent to laser light and a thermoplastic resin material that is not transparent to laser light. A thermoplastic that is irradiated with laser light from the side and melts and fuses with the energy absorbed at the contact interface of these resin materials, and is transparent to the laser light. In the laser welding method in which a non-welded portion is generated between the resin material and the thermoplastic resin material that is not transparent to the laser beam,
前記レーザー光に対して透過性のある熱可塑性樹脂材の入射側の表面に、前記レーザー光を入射させると共に入射したレーザー光を所望の方向に屈折させる傾斜面又は彎曲面を形成し、前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射し、これを透過する前記レーザー光を屈折及び反射させて溶着部分のみに向かわせるようになしたレーザー溶着方法であって、An inclined surface or a curved surface is formed on the incident-side surface of the thermoplastic resin material that is transmissive to the laser beam, and the laser beam is incident and the incident laser beam is refracted in a desired direction. A laser welding method that enters a thermoplastic resin material that is transmissive to light, refracts and reflects the laser light that passes through the thermoplastic resin material, and directs it only to the welded portion,
前記レーザー光に対して透過性のある熱可塑性樹脂材の非溶着部分の位置の空間を傾斜面となし、該傾斜面により前記レーザー光に対して透過性のある熱可塑性樹脂材内に入射し、屈折したレーザー光を全反射させ、且つ全反射したレーザー光を溶着部分に向かわせるようになしたことを特徴とするレーザー溶着方法。The space at the position of the non-welded portion of the thermoplastic resin material that is transparent to the laser beam is formed as an inclined surface, and the inclined surface is incident on the thermoplastic resin material that is transparent to the laser beam. A laser welding method characterized in that the refracted laser beam is totally reflected and the totally reflected laser beam is directed to the welded portion.
JP2008094812A 2008-04-01 2008-04-01 Laser welding method Active JP5116535B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008094812A JP5116535B2 (en) 2008-04-01 2008-04-01 Laser welding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008094812A JP5116535B2 (en) 2008-04-01 2008-04-01 Laser welding method

Publications (2)

Publication Number Publication Date
JP2009248322A JP2009248322A (en) 2009-10-29
JP5116535B2 true JP5116535B2 (en) 2013-01-09

Family

ID=41309476

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008094812A Active JP5116535B2 (en) 2008-04-01 2008-04-01 Laser welding method

Country Status (1)

Country Link
JP (1) JP5116535B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5398485B2 (en) * 2009-11-18 2014-01-29 キヤノン株式会社 Liquid supply member, method for manufacturing liquid supply member, and method for manufacturing liquid discharge head
JP5911199B2 (en) * 2011-03-22 2016-04-27 株式会社小糸製作所 Welding method and welding apparatus
JP6014834B1 (en) * 2016-07-01 2016-10-26 精電舎電子工業株式会社 Laser welding method for light transmitting resin and laser welding apparatus for light transmitting resin

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001334578A (en) * 2000-05-26 2001-12-04 Matsushita Electric Works Ltd Method for welding resin by laser
JP4548713B2 (en) * 2003-08-19 2010-09-22 キヤノン株式会社 Ink jet recording head and manufacturing method thereof
JP4311158B2 (en) * 2003-10-14 2009-08-12 株式会社デンソー Resin molded product and manufacturing method thereof
JP4761516B2 (en) * 2005-06-10 2011-08-31 キヤノン株式会社 Inkjet recording head manufacturing method and resin member joining method

Also Published As

Publication number Publication date
JP2009248322A (en) 2009-10-29

Similar Documents

Publication Publication Date Title
JP4929308B2 (en) Optical sensor device
US9757896B2 (en) Method of laser welding of an automotive light
JP4311158B2 (en) Resin molded product and manufacturing method thereof
JP6351634B2 (en) Apparatus including optical device and reflector
JP2011253814A (en) Lighting module for headlamp of motor vehicle
US10065363B2 (en) Method of simultaneous laser welding of an automotive light and related automotive light
JP5911199B2 (en) Welding method and welding apparatus
JP5116535B2 (en) Laser welding method
JP4731040B2 (en) Laser welding method
EP3115678B1 (en) Method of making a vehicle light and related vehicle light
US6713713B1 (en) Lens to adapt laser intensity for uniform welding
JP2011161633A (en) Method for producing resin molding
JP4933277B2 (en) Lens fixing method and lens unit
JP2008307839A (en) Laser welding method
JP2013196891A (en) Method of manufacturing vehicle lamp
JP5149496B2 (en) Lens welding method
JP5547883B2 (en) Method of welding resin material
JP2015085645A (en) Welding structure and welding device
JP2013252667A (en) Resin part, photoelectronic sensor and method for manufacturing resin part
CN108031971B (en) Laser welding method for opaque plastics
JP6250289B2 (en) Optical surface determination method
JP3423420B2 (en) Point condensing lens and solar condensing device using the same
JP6315279B2 (en) Light guide plate
WO2024005191A1 (en) Light guide
CN110630983A (en) Lens and light-emitting component using same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110223

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20110928

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20110928

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110928

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120628

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120702

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120918

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20121010

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121016

R150 Certificate of patent or registration of utility model

Ref document number: 5116535

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151026

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250