JP6067610B2 - Laser welding equipment - Google Patents

Laser welding equipment Download PDF

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JP6067610B2
JP6067610B2 JP2014059879A JP2014059879A JP6067610B2 JP 6067610 B2 JP6067610 B2 JP 6067610B2 JP 2014059879 A JP2014059879 A JP 2014059879A JP 2014059879 A JP2014059879 A JP 2014059879A JP 6067610 B2 JP6067610 B2 JP 6067610B2
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resin material
laser
light
laser light
pressing member
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JP2015182284A (en
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加藤　三紀彦
三紀彦 加藤
貴志 池田
貴志 池田
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Branson Ultrasonics Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1664—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
    • B29C65/14—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
    • B29C66/01—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
    • B29C66/50—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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81266—Optical properties, e.g. transparency, reflectivity
    • B29C66/81267—Transparent to electromagnetic radiation, e.g. to visible light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81266—Optical properties, e.g. transparency, reflectivity
    • B29C66/81268—Reflective to electromagnetic radiation, e.g. to visible light

Description

本発明は、樹脂材のレーザー溶着装置に関するものである。   The present invention relates to a laser welding apparatus for resin materials.

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 resin material 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 side, and the heat 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樹脂材と、レーザー光に対して透過性のない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 may be generated between a resin material that is transmissive to laser light and a resin material that is not transmissive to laser light.

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樹脂材の上面に、レーザー光の不透過層を形成し、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。   In such a case, conventionally, a laser beam impervious layer is formed on the upper surface of the resin material that is transparent to the laser beam at the position of the non-welded portion, and the laser beam is irradiated in this state. It was.

しかし、斯かる場合には、レーザー光の照射前に、所定の材料の接着、塗布等によってレーザー光の不透過層を形成し、そしてまたレーザー光の照射が終了した後で該レーザー光の不透過層を除去しなければならず、これらの処理に多大な手間がかかる。   However, in such a case, a laser light opaque layer is formed by adhesion or coating of a predetermined material before the laser light irradiation, and the laser light is not irradiated after the laser light irradiation is completed. The transmissive layer must be removed, and these processes are time consuming.

斯かる点を解決すべく、本発明者は先に特開２００８−３０７８３９号公報に示すレーザー溶着方法を案出した。図２は該レーザー溶着方法を説明するものである。該図２において、１００はレーザー光１０１を出力する光源、１０２はレーザー光１０１を透過する樹脂材１０３とレーザー光１０１を透過しない樹脂材１０４とからなり、それら樹脂材１０３、１０４の間において非溶着部分１０５が存在する加工樹脂材、１０６は前記樹脂材１０３、１０４を密着させるべくレーザー光１０１を透過する樹脂材１０３上に載せた、レーザー光１０１に対して透過性のある材料からなる集光ガイドを兼ねる押圧部材であり、レーザー光１０１を押圧部材１０６を介して加工樹脂材１０２に照射することで樹脂材１０３、１０４同士をそれらの非溶着部分１０５以外において溶着するものである。そしてまた、前記集光ガイドを兼ねる押圧部材１０６には、その下面にテーパー形の凹部１０７を設け、該テーパー形の凹部１０７を非溶着部分１０５に位置せしめてなるものである。   In order to solve such a problem, the present inventor previously devised a laser welding method disclosed in Japanese Patent Application Laid-Open No. 2008-307839. FIG. 2 illustrates the laser welding method. In FIG. 2, reference numeral 100 denotes a light source that outputs laser light 101, and reference numeral 102 includes a resin material 103 that transmits the laser light 101 and a resin material 104 that does not transmit the laser light 101. A processed resin material 106 on which the welded portion 105 exists, 106 is a collection made of a material that is transmissive to the laser beam 101 and is placed on the resin material 103 that transmits the laser beam 101 so that the resin materials 103 and 104 are in close contact with each other. This is a pressing member that also serves as a light guide, and the processed resin material 102 is irradiated with the laser beam 101 through the pressing member 106 so that the resin materials 103 and 104 are welded at portions other than the non-welded portions 105. Further, the pressing member 106 also serving as the light collecting guide is provided with a tapered recess 107 on the lower surface thereof, and the tapered recess 107 is positioned at the non-welded portion 105.

而して、斯かるレーザー溶着方法は、テーパー形の凹部１０７をもってレーザー光１０１を反射させ、これが非溶着部分１０５から逸れるようになして、レーザー光１０１に対して透過性のある樹脂材１０３とレーザー光に対して透過性のない樹脂材１０４との間において非溶着部分１０５を生ずるようになし、而も集光ガイドを兼ねる押圧部材１０６は単に載せ或いは取り去るといった簡単な操作で済み、加えて集光ガイドを兼ねる押圧部材１０６のテーパー形の凹部１０７によって反射せしめられたレーザー光１０１と直進したレーザー光１０１とが集合された部分は、高エネルギーの吸収によって溶着が早く、接合作業の能率を大幅に向上させることができ、更に集光ガイドを兼ねる押圧部材１０６に加圧パレットとしての作用をもなさしめることにより、重合した樹脂材同士を溶着時において隙間を生じないように充分に加圧することができるようになすことができるものである。もって従来のレーザー溶着方法の問題点を悉く解決することができるものである。   Thus, in such a laser welding method, the laser beam 101 is reflected by the tapered concave portion 107 so that the laser beam 101 is deviated from the non-welded portion 105, and the resin material 103 that is transparent to the laser beam 101 is used. A non-welded portion 105 is formed between the resin material 104 that is not transmissive to the laser beam, and the pressing member 106 that also serves as a light condensing guide can be simply mounted or removed. The portion where the laser beam 101 reflected by the tapered concave portion 107 of the pressing member 106 that also serves as a condensing guide and the laser beam 101 that has traveled straightly gather is fast welded due to high energy absorption, and the efficiency of the joining operation is increased. The pressing member 106, which also serves as a condensing guide, can function as a pressure pallet. By caulking, in which the polymerized resin material together can be made to be able to pressure sufficient pressure so as not to cause a gap during welding. Thus, the problems of the conventional laser welding method can be solved.

然るに、斯かるレーザー溶着方法には、次の如き問題点もあることが判明した。第１の問題点は、図３に示す通りであり、隣接する非溶着部分１０５、１０５が極めて近い位置にあることから、これに対応してテーパー形の凹部１０７、１０７が互いに極めて近い位置関係になる場合である。この場合には、隣接する一方のテーパー形の凹部１０７によって反射せしめられたレーザー光１０１が隣接する他方のテーパー形の凹部１０７内に通り抜け、非溶着部分１０５に照射されてしまうことになる。   However, it has been found that this laser welding method has the following problems. The first problem is as shown in FIG. 3, and since the adjacent non-welded portions 105 and 105 are located very close to each other, the tapered recesses 107 and 107 are correspondingly close to each other. This is the case. In this case, the laser beam 101 reflected by the one adjacent tapered concave portion 107 passes through the other adjacent tapered concave portion 107 and is irradiated to the non-welded portion 105.

また、第２の問題点は、図４に示す通りであり、加工樹脂材１０２における非溶着部分１０５の面積が大きく、且つ集光ガイドを兼ねる押圧部材１０６の厚みに規制がある場合である。このように集光ガイドを兼ねる押圧部材１０６の厚みを充分にとれない場合には、テーパー形の凹部１０７における頂部が切欠された状態となり、この部分からレーザー光１０１が入り込んで非溶着部分１０５に照射されてしまうことになる。 The second problem is as shown in FIG. 4, a large area of the non-welded portion 105 in the processing resin material 102, and is a case where there is a restriction on the Thickness of the pressing member 106 serving as a condensing guide . In such a case where not sufficiently take the Thickness of the pressing member 106 serving as a light guide is a state in which the top portion of the recess 107 of the taper shape is notched, unwelded portion 105 enters the laser beam 101 from this portion Will be irradiated.

本発明は、本発明者が先に案出した上記レーザー溶着方法の問題点を解決し、非溶着部分が存在する加工樹脂材を、複数の非溶着部分の相互位置や非溶着部分の大きさといった制約要因に対して柔軟に対応して溶着することができるようになしたレーザー溶着装置を提供しようとするものである。   The present invention solves the problems of the laser welding method previously devised by the present inventor, the processed resin material having non-welded portions, the mutual position of the non-welded portions and the size of the non-welded portions. It is an object of the present invention to provide a laser welding apparatus that can flexibly cope with such a limiting factor.

而して、本発明の要旨とするところは、レーザー光を出力する光源と、レーザー光を透過する樹脂材とレーザー光を透過しない樹脂材からなり、それら樹脂材の間において非溶着部分が存在する加工樹脂材と、前記樹脂材同士を密着させるべくレーザー光を透過する樹脂材上に載せた、レーザー光に対して透過性のある材料からなる押圧部材とからなり、レーザー光を押圧部材を介して加工樹脂材に照射することで樹脂材同士をそれらの非溶着部分以外において溶着するレーザー溶着装置において、
前記押圧部材の内部における前記加工樹脂材の非溶着部分をカバーする位置に、三次元レーザー彫刻によりレーザー光を拡散反射又は極度に減衰せしめる光遮蔽層を形成したことを特徴とするレーザー溶着装置にある。 Thus, the gist of the present invention consists of a light source that outputs laser light, a resin material that transmits laser light, and a resin material that does not transmit laser light, and there is a non-welded portion between the resin materials. And a pressing member made of a material that is transmissive to the laser light and placed on the resin material that transmits the laser light so that the resin materials are brought into close contact with each other. In a laser welding apparatus that welds resin materials to each other except their non-welded portions by irradiating the processed resin material through
A position covering the non-welded portion of the processing resin material definitive in the inner portion of the pressing member, laser welding, characterized in that the formation of the light-shielding layer allowed to diffuse reflection or extremely attenuate the laser beam by the three-dimensional laser engraving In the device.

本発明は上記の如き構成であり、押圧部材の内部における加工樹脂材の非溶着部分をカバーする位置に、三次元レーザー彫刻によりレーザー光を拡散反射又は極度に減衰せしめる光遮蔽層を設けたものであるから、隣接する非溶着部分が互いに極めて近い位置関係にある場合にあっても、光遮蔽層によりレーザー光を拡散反射させて非溶着部分から逸れさせ、もって隣接する相互の非溶着部分にレーザー光が照射されることがなく、また、光遮蔽層はレーザー光を拡散反射させることによりその通過を遮断するものであり、本発明者が先に案出したレーザー溶着方法におけるが如く光の斜め下方への反射屈折を利用して非溶着部分への照射を避けるようにするものではないから、押圧部材の厚みは全く関係がなく、非溶着部分の面積が大きい場合には、光遮蔽層の面積をそれに応じて大きくすることで容易に対応することができることになるものである。また、本発明者が先に案出したレーザー溶着方法においては、押圧部材のテーパー形の凹部の部分によって加工樹脂材に対する押圧部材の加圧面積の欠落が生じるが、本発明によれば押圧部材に加圧面積の欠落が生じることはなく、全体的に加工樹脂材上に載ることになるから、全体的に充分に安定した加圧を行うことができるものである。 The present invention is a structure described above in a position to cover a non-welded portion of the definitive on the inner portion of the pressing member processing resin material, provided with a light shielding layer allowed to diffuse reflection or extremely attenuate the laser beam by the three-dimensional laser engraving Therefore, even when adjacent non-welded portions are in a very close positional relationship with each other, the light shielding layer diffuses and reflects the laser beam to deviate from the non-welded portions, thereby adjacent non-welded portions. The portion is not irradiated with laser light, and the light shielding layer blocks the passage of the laser light by diffusively reflecting it, as in the laser welding method previously devised by the present inventor. since not intended to avoid irradiation by using a catadioptric of diagonally downward light to the non-welded portion, thickness of the pressing member without any relation, a large area of the non-welded parts The case is made that the area of the light-shielding layer can be easily handled by increasing accordingly. Also, in the laser welding method of the present inventor has devised earlier, but lack of pressure area of the pressing member with respect to the processing resin material by the portion of the tapered shape of the concave portion of the pressing member occurs, pressing according to the present invention There is no loss of the pressurization area in the member, and the whole is placed on the processed resin material, so that sufficiently stable pressurization can be performed as a whole.

また、光遮蔽層を三次元レーザー彫刻により形成してなるから、非溶着部分が複数であり且つそれらが相互に近接した位置にある場合にあっても、また非溶着部分の面積が大きい場合であっても、それら各場合に対応して容易に光遮蔽層を形成することができるものである。且つまた非溶着部分の平面形状が複雑なものであったとしても、光遮蔽層を容易にこれに対応させることができるものである。 Further, since the light-shielding layer obtained by forming a three-dimensional laser engraving, also unwelded part is more and they are there when in the position close to each other, and in case the area of the non-welded portion is greater Even if it exists, a light shielding layer can be formed easily corresponding to each of those cases. Moreover, even if the planar shape of the non-welded portion is complicated, the light shielding layer can be easily accommodated.

本発明の実施形態に係るレーザー溶着装置の説明図である。It is explanatory drawing of the laser welding apparatus which concerns on embodiment of this invention. 本発明者が先に案出したレーザー溶着方法の説明図である。It is explanatory drawing of the laser welding method which this inventor devised previously. 本発明者が先に案出したレーザー溶着方法における問題点の説明図である。It is explanatory drawing of the problem in the laser welding method which this inventor devised previously. 本発明者が先に案出したレーザー溶着方法における他の問題点の説明図である。It is explanatory drawing of the other problem in the laser welding method which this inventor devised previously.

以下、本発明を実施するための形態について、図面を参照して説明する。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

図中、１はレーザー光２を出力する光源、３はレーザー光２を透過する樹脂材４とレーザー光２を透過しない樹脂材５とからなり、それら樹脂材４、５の間において非溶着部分６が存在する加工樹脂材である。   In the figure, reference numeral 1 denotes a light source that outputs laser light 2, and 3 denotes a resin material 4 that transmits the laser light 2 and a resin material 5 that does not transmit the laser light 2, and a non-welded portion between the resin materials 4 and 5. 6 is a processed resin material.

７はレーザー光２に対して透過性のある材料からなり、前記樹脂材４、５同士を密着させるべくレーザー光２を透過する樹脂材４上に載せた押圧部材である。   Reference numeral 7 denotes a pressing member that is made of a material that is transparent to the laser light 2 and is placed on the resin material 4 that transmits the laser light 2 so that the resin materials 4 and 5 are in close contact with each other.

そして、本レーザー溶着装置は、本発明者が先に案出したレーザー溶着方法と同様に、レーザー光２を前記押圧部材７を介して前記加工樹脂材３に照射することにより、樹脂材４、５同士をそれらの非溶着部分６以外において溶着するものである。   And this laser welding apparatus irradiates the processed resin material 3 with the laser beam 2 through the pressing member 7 in the same manner as the laser welding method previously devised by the present inventor. 5 is welded except for those non-welded portions 6.

そしてまた、本実施形態に係るレーザー溶着装置においては、前記押圧部材７の内部における前記加工樹脂材３の非溶着部分６をカバーする位置に、レーザー光２を拡散反射する光遮蔽層８を設けている。 In the laser welding apparatus according to this embodiment, a light shielding layer 8 that diffuses and reflects the laser light 2 is provided at a position covering the non-welded portion 6 of the processed resin material 3 inside the pressing member 7. It is .

また、前記光遮蔽層８は、三次元レーザー彫刻により形成している。尚、斯かる三次元レーザー彫刻は、公知の三次元レーザー彫刻装置により行なえばよい。 The light shielding layer 8 is formed by three- dimensional laser engraving. Such three- dimensional laser engraving may be performed by a known three- dimensional laser engraving apparatus.

本実施形態は上記の如くであり、押圧部材７の内部における加工樹脂材３の非溶着部分６をカバーする位置に、三次元レーザー彫刻によりレーザー光２を拡散反射せしめる光遮蔽層８を設けたものであるから、隣接する非溶着部分６、６が互いに極めて近い位置関係にある場合にあっても、光遮蔽層８、８によりレーザー光２を拡散反射させて非溶着部分６、６から逸れさせ、もって隣接する相互の非溶着部分６、６にレーザー光２が照射されることがなく、また、光遮蔽層８はレーザー光２を拡散反射させることによりその通過を遮断するものであり、本発明者が先に案出したレーザー溶着方法におけるが如く光の斜め下方への反射屈折を利用して非溶着部分への照射を避けるようにするものではないから、押圧部材７の厚みは全く関係がなく、非溶着部分６の面積が大きい場合には、光遮蔽層８の面積をそれに応じて大きくすることで容易に対応することができることになるものである。また、光遮蔽層８がレーザー光２を極度に減衰させるものである場合にも、同様に上記問題点を解決することができるものである。また、本発明者が先に案出したレーザー溶着方法においては押圧部材のテーパー形の凹部の部分によって加工樹脂材に対する押圧部材の加圧面積の欠落が生じるが、本発明によれば押圧部材７に加圧面積の欠落が生じることはなく、全体的に加工樹脂材３上に載ることになるから、全体的に充分に安定した加圧を行うことができるものである。 The present embodiment is as described above, and the light shielding layer 8 that diffusely reflects the laser light 2 by three-dimensional laser engraving is provided at a position covering the non-welded portion 6 of the processed resin material 3 inside the pressing member 7. Therefore, even when the adjacent non-welded portions 6 and 6 are in a very close positional relationship, the light shielding layers 8 and 8 diffuse and reflect the laser beam 2 to deviate from the non-welded portions 6 and 6. Thus, the laser beam 2 is not irradiated to the adjacent non-welded portions 6, 6, and the light shielding layer 8 blocks the passage by diffusing and reflecting the laser beam 2, since the present inventors is not intended to avoid irradiation by using a catadioptric of diagonally downward of the light as if definitive laser welding method devised earlier to the non-welded portion, thickness of the pressing member 7 No relationship at all Ku, when the area of the non-welded portion 6 is large, is made to the area of the light shielding layer 8 can be easily handled by increasing accordingly. Further, even when the light shielding layer 8 is one that extremely attenuates the laser light 2, the above problem can be solved in the same manner. Further, in the laser welding method previously devised by the present inventor, the pressing member 7 has a pressing area against the processed resin material due to the tapered concave portion of the pressing member. In this case, there is no loss of the pressurization area, and the whole is placed on the processed resin material 3, so that the pressurization can be performed sufficiently stably as a whole.

また、光遮蔽層８を三次元レーザー彫刻により形成してなるから、非溶着部分６が複数であり且つそれらが相互に近接した位置にある場合にあっても、また非溶着部分６の面積が大きい場合であっても、それら各場合に対応して容易に光遮蔽層８を形成することができるものである。且つまた非溶着部分６の平面形状が複雑なものであったとしても、光遮蔽層８を容易にこれに対応させることができるものである。 Further, since the light-shielding layer 8 is formed by forming a three-dimensional laser engraving, also unwelded portion 6 is more and they are there when in the position close to each other and the area of the non-welded portion 6 Even if it is large, the light shielding layer 8 can be easily formed corresponding to each case. Moreover, even if the planar shape of the non-welded portion 6 is complicated, the light shielding layer 8 can be easily adapted to this.

また、本発明に係るレーザー溶着装置は、それ自体上記の如き課題を有し且つ該課題を解決することができるものであるが、本発明者が先に案出した特開２００８−３０７８３９号のレーザー溶着方法と混用して実施することも可能であり、その場合においては双方の溶着方法の利点を活かすことで相乗効果を期待することができるものである。   Further, the laser welding apparatus according to the present invention itself has the above-mentioned problems and can solve the problems. However, the present inventor previously proposed Japanese Patent Application Laid-Open No. 2008-307839. It is also possible to carry out a mixture with a laser welding method. In that case, a synergistic effect can be expected by taking advantage of the advantages of both welding methods.

１ 光源
２ レーザー光
３ 加工樹脂材
４ レーザー光を透過する樹脂材
５ レーザー光を透過しない樹脂材
６ 非溶着部分
７ 押圧部材
８ 光遮蔽層
DESCRIPTION OF SYMBOLS 1 Light source 2 Laser light 3 Processing resin material 4 Resin material which permeate | transmits laser light 5 Resin material which permeate | transmits laser light 6 Non-welding part 7 Pressing member 8 Light shielding layer

Claims (1)

レーザー光を出力する光源と、レーザー光を透過する樹脂材とレーザー光を透過しない樹脂材からなり、それら樹脂材の間において非溶着部分が存在する加工樹脂材と、前記樹脂材同士を密着させるべくレーザー光を透過する樹脂材上に載せた、レーザー光に対して透過性のある材料からなる押圧部材とからなり、レーザー光を押圧部材を介して加工樹脂材に照射することで樹脂材同士をそれらの非溶着部分以外において溶着するレーザー溶着装置において、
前記押圧部材の内部における前記加工樹脂材の非溶着部分をカバーする位置に、三次元レーザー彫刻によりレーザー光を拡散反射又は極度に減衰せしめる光遮蔽層を形成したことを特徴とするレーザー溶着装置。
A light source that outputs laser light, a resin material that transmits laser light, and a resin material that does not transmit laser light, and a processed resin material in which a non-welded portion exists between the resin materials and the resin materials are in close contact with each other It consists of a pressing member made of a material that is transparent to laser light and placed on a resin material that transmits laser light as much as possible. By irradiating the processed resin material with laser light through the pressing member, the resin materials In a laser welding apparatus for welding other than those non-welded parts,
A position covering the non-welded portion of the processing resin material definitive in the inner portion of the pressing member, laser welding, characterized in that the formation of the light-shielding layer allowed to diffuse reflection or extremely attenuate the laser beam by the three-dimensional laser engraving apparatus.
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