JP7314451B2 - Sheet Laser Welding Apparatus, Sheet Laser Welding Method, Sheet Laser Welded Structure, Polyimide Sheet Laser Welding Apparatus, Polyimide Sheet Laser Welding Method, Polyimide Sheet Laser Welded Structure - Google Patents

Sheet Laser Welding Apparatus, Sheet Laser Welding Method, Sheet Laser Welded Structure, Polyimide Sheet Laser Welding Apparatus, Polyimide Sheet Laser Welding Method, Polyimide Sheet Laser Welded Structure Download PDF

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JP7314451B2
JP7314451B2 JP2021566704A JP2021566704A JP7314451B2 JP 7314451 B2 JP7314451 B2 JP 7314451B2 JP 2021566704 A JP2021566704 A JP 2021566704A JP 2021566704 A JP2021566704 A JP 2021566704A JP 7314451 B2 JP7314451 B2 JP 7314451B2
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sheet
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support member
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JPWO2021130993A1 (en
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裕樹 鬼頭
公彦 渡辺
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Seidensha Electronics Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14Joining 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
    • B29C65/16Laser beams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24Joining 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

Description

本開示は、シートのレーザ溶着装置、シートのレーザ溶着方法、シートをレーザ溶着した構造物、に係り、特に、ポリイミドシートのレーザ溶着装置、ポリイミドシートのレーザ溶着方法、ポリイミドシートをレーザ溶着した構造物に関する。 The present disclosure relates to a laser welding apparatus for sheets, a method for laser welding sheets, and a structure obtained by laser welding sheets, and more particularly, to a laser welding apparatus for polyimide sheets, a method for laser welding polyimide sheets, and a structure obtained by laser welding polyimide sheets.

芳香族ポリイミドシート(以下、「ポリイミドシート」と略す)は、機械的強度と耐熱性に優れ、更に宇宙空間で使用する場合の耐放射線に優れており、人工衛星用のハニカムコア、耐熱性密封袋、その他の構造物への利用が検討されてきた。 Aromatic polyimide sheets (hereinafter abbreviated as "polyimide sheets") have excellent mechanical strength and heat resistance, and are also excellent in radiation resistance when used in outer space.

従来、ポリイミドシートを用いてハニカムコアやその他の構造物を作るには、ポリイミドシート同士を接着剤で接着する方法が提案されていた。しかし、ポリイミドシートの各層間に耐熱性の接着剤を塗布した積層体を積層方向に圧着・加熱した状態で一定時間保持する時間のかかる作業が必要であった。接着剤の重量が人工衛星の軽量化を阻害していた。また、耐熱製密封袋を作るには信頼性の高い接着作業を必要としていた(例えば、特許文献1、2を参照)。 Conventionally, in order to make a honeycomb core or other structures using polyimide sheets, a method of adhering polyimide sheets together with an adhesive has been proposed. However, it was necessary to perform a time-consuming work of keeping the laminated body, in which a heat-resistant adhesive was applied between the layers of the polyimide sheets, pressed and heated in the lamination direction for a certain period of time. The weight of the adhesive hinders efforts to reduce the weight of satellites. In addition, a highly reliable bonding operation is required to produce a heat-resistant hermetic bag (see Patent Documents 1 and 2, for example).

一方、接着剤を用いないでポリイミドシート同士を一体にして所定の強度の実用的構造物をつくる方法は確立されていなかった。一つの方法として、接着剤を用いずにプラスチックシートを加熱して一体に溶着する方法はあるが、ポリイミドシートは溶着に適する温度範囲が狭く、加熱途中でポリイミドシートが熱で変形したり、炭化したり、高温になった部分が溶けて孔があいたりする。 On the other hand, no method has been established for forming a practical structure with a predetermined strength by integrating polyimide sheets without using an adhesive. As one method, there is a method of heating plastic sheets to weld them together without using an adhesive, but the temperature range suitable for welding is narrow for polyimide sheets, and during heating, the polyimide sheets are deformed by heat, carbonized, and high-temperature parts melt and form holes.

例えば、従来のレーザ溶着方法によりレーザ光線をポリイミドシートに直接照射しても、(1)レーザ光線の吸収が悪い。(2)発熱が鈍い。(3)温度が上がるとレーザ光線を吸収しやすくなるが、吸収し始めると急に温度が上がる。(4)急に温度が上がって熱変形する。(5)炭化する。(6)孔が開く。(7)変化が急激である。(8)温度コントロールがきかない、という諸課題があった。従来のレーザ溶着方法で最適な溶着条件を探しても、これら複数の課題すべてを同時に解決するのは困難と言われていた。 For example, even if a polyimide sheet is directly irradiated with a laser beam by a conventional laser welding method, (1) the absorption of the laser beam is poor. (2) Heat generation is dull. (3) When the temperature rises, it becomes easier to absorb the laser beam, but when the absorption starts, the temperature rises suddenly. (4) The temperature suddenly rises and thermal deformation occurs. (5) Carbonize. (6) A hole opens. (7) The change is abrupt. (8) There were various problems that temperature control was not effective. It was said that it would be difficult to solve all of these multiple problems at the same time, even if the optimal welding conditions were searched for using conventional laser welding methods.

特開平1-228832号公報JP-A-1-228832 特開2016-13667号公報JP 2016-13667 A

本開示は、接着剤を用いないでシート同士を溶着する、シートのレーザ溶着装置、シートのレーザ溶着方法、シートをレーザ溶着した構造物、を提供することを課題とし、特に、接着剤を用いないでポリイミドシート同士を溶着する、シートのレーザ溶着装置、シートのレーザ溶着方法、シートをレーザ溶着した構造物、を提供することを課題としている。 An object of the present disclosure is to provide a sheet laser welding apparatus, a sheet laser welding method, and a structure in which sheets are laser-welded, which weld sheets together without using an adhesive. In particular, an object is to provide a sheet laser welding apparatus, a sheet laser welding method, and a structure in which sheets are laser-welded, in which polyimide sheets are welded together without using an adhesive.

より具体的には、シート同士を溶着する際に、シートが熱変形せず、炭化せず、高温部分が溶けて孔があかない、密封性(水密性)に優れた溶着ができる、安定的な溶着作業ができる、シートのレーザ溶着装置、シートのレーザ溶着方法、シートをレーザ溶着した構造物、を提供することを課題としている。 More specifically, it is an object of the present invention to provide a sheet laser welding apparatus, a sheet laser welding method, and a structure in which sheets are laser-welded, in which the sheets are not thermally deformed or carbonized when the sheets are welded to each other, the high-temperature portions are not melted and holes are not formed, welding can be performed with excellent sealing performance (watertightness), and stable welding work can be performed.

更に本開示は、接着剤なしでレーザ溶着したポリイミドシートを用いた構造物を提供すること、例えば軽量化した人工衛星等の構造物を提供すること、耐熱性密封袋を提供すること、を課題としている。 Furthermore, the present disclosure aims to provide a structure using a polyimide sheet laser-welded without an adhesive, for example, to provide a structure such as a lightweight artificial satellite, and to provide a heat-resistant sealed bag.

本開示は、シートを局所的に支持するとともに、局所的に支持しているシートの部分を集中的に加熱してレーザ溶着する、言い換えれば、熱と圧力を局所的に支持しているシートの部分に集中してレーザ溶着することにより、シートの熱変形、炭化、孔あき、密封性の確保、という諸課題を解決している。 The present disclosure solves various problems such as thermal deformation, carbonization, perforation, and sealing of the sheet by locally supporting the sheet and laser welding the locally supported sheet portion by heating intensively, in other words, by concentrating the heat and pressure on the locally supporting sheet portion and performing the laser welding.

課題を解決するための手段としては、シートの下面を線状領域または点状領域で局所的に支持する支持部材と、シートの上面を覆う発熱部材と、発熱部材をシートに押圧する押圧部と、発熱部材にレーザ光線を照射して発熱させるレーザ光線照射部と、制御部と、を有し、シートの上面の第1の領域を発熱部材で覆い、前記第1の領域と対向する前記シートの下面の第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、押圧部で発熱部材をシートの上面に押圧して密着させた状態で、制御部により、レーザ光線照射部から発熱部材にレーザ光線を照射して発熱させ、発熱部材で発生させた熱をシートの上面から下面へ、そして支持部材の線状領域または点状領域に向けて、伝えている。このことにより、局所的に支持しているシートの部分を集中的に加熱して溶着している。 課題を解決するための手段としては、シートの下面を線状領域または点状領域で局所的に支持する支持部材と、シートの上面を覆う発熱部材と、発熱部材をシートに押圧する押圧部と、発熱部材にレーザ光線を照射して発熱させるレーザ光線照射部と、制御部と、を有し、シートの上面の第1の領域を発熱部材で覆い、前記第1の領域と対向する前記シートの下面の第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、押圧部で発熱部材をシートの上面に押圧して密着させた状態で、制御部により、レーザ光線照射部から発熱部材にレーザ光線を照射して発熱させ、発熱部材で発生させた熱をシートの上面から下面へ、そして支持部材の線状領域または点状領域に向けて、伝えている。 As a result, the portion of the sheet that is locally supported is intensively heated and welded.

本開示は更に、支持部材を加熱する加熱部を設け、レーザ光線照射部からレーザ光線を照射して発熱部材で生じた熱を支持部材の線状領域または点状領域で支持したシート部分に伝えるとともに、加熱部で支持部材を加熱して生じた熱を支持部材の線状領域または点状領域で支持したシート部分へ伝えることにより、局所的に支持しているシートの部分を集中的に加熱して溶着している。 The present disclosure further provides a heating unit that heats the support member, irradiates a laser beam from the laser beam irradiation unit, generates heat in the heat generating member, and transfers the heat generated by the heat generating member to the sheet portion supported by the linear regions or the dot regions of the support member.

本開示は更に、シートのレーザ光線照射部に、レーザ光線照射位置を移動させるレーザ光線照射位置移動部を設け、レーザ光線照射位置を、シートを支持部材の線状領域が支持している支持位置に沿って移動させるように構成し、発熱部材で生じた熱を支持部材の線状領域に向けて伝えることにより、局所的に支持しているシートの部分を集中的に加熱して溶着するとともに、レーザ光線照射位置を移動させ、シートを支持部材の線状領域に沿った一定範囲を溶着している。 According to the present disclosure, a laser beam irradiation position moving unit for moving the laser beam irradiation position is provided in the laser beam irradiation part of the sheet, and the laser beam irradiation position is moved along the support position where the sheet is supported by the linear regions of the support member. By transferring the heat generated by the heat-generating member toward the linear regions of the support member, the part of the sheet that is locally supported is intensively heated and welded, and the laser beam irradiation position is moved to weld the sheet in a certain range along the linear regions of the support member. are

本開示は更に、レーザ光線照射部のレーザ光線照射位置を移動させるレーザ光線照射位置移動部を設け、更に、加熱部を移動させる加熱位置移動部を設け、レーザ光線照射位置と加熱部の加熱位置を、シートを支持している支持部材の線状領域に沿って移動させるように構成し、発熱部材と支持部材で生じた熱により、局所的に支持しているシートの部分を集中的に加熱して溶着するとともに、レーザ光線照射位置と加熱部の加熱位置を移動させ、シートを支持部材の線状領域に沿った一定範囲を溶着している。 The present disclosure further includes a laser beam irradiation position moving unit for moving the laser beam irradiation position of the laser beam irradiation unit, and a heating position moving unit for moving the heating unit. The laser beam irradiation position and the heating position of the heating unit are configured to be moved along a linear region of the support member supporting the sheet. It welds a certain range along the shape area.

本開示は、支持部材で局所的に支持した部分を溶着して耐熱性密封袋を溶着している。 According to the present disclosure, the portion locally supported by the support member is welded to weld the heat-resistant sealed bag.

本開示は、シートを局所的に支持するとともに、局所的に支持しているシートの部分を集中的に加熱してレーザ溶着することにより、接着剤を用いないでシート同士を溶着する、シートのレーザ溶着装置、シートのレーザ溶着方法、シートをレーザ溶着した構造物、を提供する。特に、接着剤を用いないでポリイミドシート同士を溶着する、シートのレーザ溶着装置、シートのレーザ溶着方法、シートをレーザ溶着した構造物、を提供できる効果がある。 The present disclosure provides a sheet laser welding apparatus, a sheet laser welding method, and a structure in which sheets are laser-welded, which locally support a sheet and weld the sheets together without using an adhesive by intensively heating and laser-welding the locally supported portion of the sheet. In particular, there is an effect that it is possible to provide a sheet laser welding apparatus, a sheet laser welding method, and a structure obtained by laser welding sheets that weld polyimide sheets to each other without using an adhesive.

本開示によれば、シートが、急激に発熱しない、熱で変形しない、炭化しない、高温部分が溶けて孔が開かない、密封性に優れた溶着ができる、安定的な溶着作業ができる、シートのレーザ溶着装置およびシートのレーザ溶着方法を提供できる効果がある。 According to the present disclosure, it is possible to provide a sheet laser welding apparatus and a sheet laser welding method in which the sheet does not generate heat rapidly, is not deformed by heat, is not carbonized, does not melt at high temperature portions and does not open holes, can perform welding with excellent sealing performance, and can perform stable welding work.

また本開示によれば、接着剤なしでレーザ溶着したポリイミドシートを用いた構造物を提供すること、例えば軽量化した人工衛星等の構造物を提供すること、耐熱性密封袋を提供すること、ができる効果がある。 Further, according to the present disclosure, it is possible to provide a structure using a polyimide sheet laser-welded without an adhesive, for example, to provide a structure such as a lightweight artificial satellite, and to provide a heat-resistant sealed bag.

本発明の第一実施形態に係るレーザ溶着装置の原理的な構成を示した概略構成図。1 is a schematic configuration diagram showing the principle configuration of a laser welding device according to a first embodiment of the present invention; FIG. (a)~(f)本発明の第一実施形態に係るレーザ溶着方法の作業手順を示した遷移図。(a) to (f) transition diagrams showing work procedures of the laser welding method according to the first embodiment of the present invention. 本発明の第一実施形態の変形例に係るレーザ溶着装置の原理的な構成を示した概略構成図Schematic configuration diagram showing the principle configuration of a laser welding apparatus according to a modification of the first embodiment of the present invention. 本発明の第二実施形態に係るレーザ溶着装置の原理的な構成を示した概略構成図。FIG. 2 is a schematic configuration diagram showing the principle configuration of a laser welding device according to a second embodiment of the present invention; (a)~(f)本発明の第二実施形態に係るレーザ溶着方法の作業手順を示した遷移図。(a) to (f) transition diagrams showing work procedures of the laser welding method according to the second embodiment of the present invention. (a)本発明の第二実施形態の第一変形例に係るレーザ溶着装置の原理的な構成を示した概略構成図、(b)本発明の第二実施形態の第二変形例に係るレーザ溶着装置の原理的な構成を示した概略構成図。(a) A schematic configuration diagram showing the principle configuration of the laser welding device according to the first modification of the second embodiment of the present invention, (b) A schematic configuration diagram showing the principle configuration of the laser welding device according to the second modification of the second embodiment of the present invention. 本発明の第二実施形態の第三変形例に係るレーザ溶着装置の原理的な構成を示した正面図。The front view which showed the principle structure of the laser welding apparatus which concerns on the 3rd modification of 2nd embodiment of this invention. 本発明の第三実施形態に係るレーザ溶着装置の原理的な構成を示した概略構成図。FIG. 5 is a schematic configuration diagram showing the principle configuration of a laser welding device according to a third embodiment of the present invention; 本発明の第三実施形態に係るレーザ溶着装置の要部を示した斜視図。The perspective view which showed the principal part of the laser welding apparatus which concerns on 3rd embodiment of this invention. 本発明の第三実施形態に係るレーザ溶着装置の発熱部材と支持部材の温度が上昇し始めたときの状態を示した斜視図。FIG. 11 is a perspective view showing a state when temperatures of a heat-generating member and a support member of the laser welding device according to the third embodiment of the present invention start to rise; 本発明の第三実施形態に係るレーザ溶着装置の発熱部材と支持部材とこれらに挟まれたシートの温度が所定温度以上になり、発熱部材と支持部材まで連なる高温領域ができた状態を示した斜視図。FIG. 11 is a perspective view showing a state in which the temperature of the heat generating member, the support member, and the sheet sandwiched between them of the laser welding apparatus according to the third embodiment of the present invention reaches a predetermined temperature or higher, and a high-temperature region extending to the heat generating member and the support member is created. 本発明の第四実施形態に係るレーザ溶着装置の発熱温度測定部と支持温度測定部を付けたときの構成を示した図。The figure which showed the structure when the heating temperature measurement part and support temperature measurement part of the laser welding apparatus based on 4th embodiment of this invention are attached. 本発明の第四実施形態に係るレーザ溶着方法の溶着動作のフロー図。FIG. 11 is a flowchart of welding operation of a laser welding method according to a fourth embodiment of the present invention; 本発明の第四実施形態に係るレーザ溶着方法の溶着動作に速度調節動作を加えたときのフロー図。FIG. 11 is a flow diagram when a speed adjusting operation is added to the welding operation of the laser welding method according to the fourth embodiment of the present invention; 本発明の第四実施形態の第一の変形例にかかるハーフミラーを用いたレーザ溶着装置の支持部材と発熱部材の温度を測定する手段を付けたときの構成を示した図。The figure which showed the structure when the means to measure the temperature of the support member and heat-generating member of the laser welding apparatus using the half mirror concerning the 1st modification of 4th embodiment of this invention is attached. 本発明の第四実施形態の第二の変形例にかかるレーザ溶着装置のシートの溶着対象範囲の温度を測定する手段を付けたときのレーザ溶着装置の構成を示した図。FIG. 11 is a diagram showing the configuration of a laser welding apparatus according to a second modification of the fourth embodiment of the present invention when a means for measuring the temperature of a welding target range of sheets is provided; 本発明の第五実施形態に係るレーザ溶着装置の発熱部材と支持部材に熱を発生させる手段としてレーザ光線照射部を用いたときの断面図。FIG. 11 is a cross-sectional view of a laser welding apparatus according to a fifth embodiment of the present invention when a laser beam irradiation unit is used as means for generating heat in a heat generating member and a supporting member; 本発明の第五実施形態に係るレーザ溶着装置の斜視図。The perspective view of the laser welding apparatus which concerns on 5th embodiment of this invention. 本発明の第五実施形態の第一の変形例に係るレーザ溶着装置の発熱部材と支持部材の肉厚を薄くしたときの図。FIG. 11 is a view of the laser welding apparatus according to the first modified example of the fifth embodiment of the present invention when the thickness of the heat generating member and the supporting member is reduced; 本発明の第五実施形態の第二の変形例に係るレーザ溶着装置で、発熱部材と支持部材の外周面を断熱材で囲んだときの図。FIG. 11 is a view of the laser welding apparatus according to the second modification of the fifth embodiment of the present invention, in which the outer peripheral surfaces of the heat-generating member and the support member are surrounded by a heat insulating material; 本発明の第六実施形態に係るレーザ溶着装置で、三枚のシートを溶着するときの図。FIG. 11 is a diagram of when three sheets are welded by the laser welding apparatus according to the sixth embodiment of the present invention; 本発明の第七実施形態に係るレーザ溶着装置で、シートの端面を突き合せ溶着しているときの図。FIG. 11 is a diagram of the laser welding apparatus according to the seventh embodiment of the present invention when the end faces of sheets are butt-welded; 本発明の第八実施形態に係るレーザ溶着装置で溶着している状態を示した外観斜視図。FIG. 11 is an external perspective view showing a state of welding by a laser welding apparatus according to an eighth embodiment of the present invention; 本発明の第八実施形態に係るレーザ溶着装置で溶着している状態を示した平面図。FIG. 11 is a plan view showing a state of welding by a laser welding apparatus according to an eighth embodiment of the present invention; 本発明の第八実施形態に係るレーザ溶着装置で溶着したシートの平面図。FIG. 11 is a plan view of sheets welded by a laser welding apparatus according to an eighth embodiment of the present invention; 本発明の第八実施形態に係るレーザ溶着装置で溶着したシートの斜視図。FIG. 11 is a perspective view of a sheet welded by a laser welding apparatus according to an eighth embodiment of the present invention; 本発明の第八実施形態に係るレーザ溶着装置で溶着した耐熱性密封袋の平面図。FIG. 11 is a plan view of a heat-resistant sealed bag welded by a laser welding apparatus according to an eighth embodiment of the present invention; 本発明の第八実施形態に係るレーザ溶着装置で溶着した耐熱性密封袋の斜視図。FIG. 11 is a perspective view of a heat-resistant sealed bag welded by a laser welding device according to an eighth embodiment of the present invention;

発明者は、芳香族ポリイミドシートのようにレーザ溶着することが困難とされてきたシートについて、シートを局所的に支持するとともに、局所的に支持しているシートの部分を集中的に加熱してレーザ溶着するレーザ溶着装置、レーザ溶着方法、そしてシートをレーザ溶着した構造物の発明を完成した。 The inventor has completed the invention of a laser welding apparatus, a laser welding method, and a structure in which the sheets are laser-welded by locally supporting the sheet such as the aromatic polyimide sheet, which has been considered difficult to be laser-welded, and by intensively heating the portion of the locally supported sheet for laser welding.

本開示により、シートを急激に発熱させず、熱変形させず、炭化させず、孔を開けず、密封性に優れた溶着ができる。以下、本発明の第一実施形態から第八実施形態までと、それらの変形例について説明する。 According to the present disclosure, the sheet can be welded with excellent sealing performance without causing sudden heat generation, thermal deformation, carbonization, or perforation. Hereinafter, the first to eighth embodiments of the present invention and modifications thereof will be described.

(第一実施形態)
図1に、本発明の第一実施形態に係るレーザ溶着装置の原理的な概略構成図を示した。本発明の第一実施形態では、上下に重ねた芳香族ポリイミドのシート1、2を下側(一側)のシート1の下面(一側面)に支持部材3を当てて局所的に支持し、シート1、2の局所的に支持している部分を上側(他側)のシート2の上面(他側面)に乗せた発熱部材4で発生させた熱により加熱し、溶着している。
(First embodiment)
FIG. 1 shows a principled schematic configuration diagram of a laser welding apparatus according to a first embodiment of the present invention. In the first embodiment of the present invention, vertically stacked aromatic polyimide sheets 1 and 2 are locally supported by applying a support member 3 to the lower surface (one side surface) of the lower (one side) sheet 1, and the locally supported portion of the sheets 1 and 2 is heated by heat generated by a heat generating member 4 placed on the upper surface (other side surface) of the upper (other side) sheet 2 and welded.

詳しく説明すると、図1で、支持部材3は、円柱の柱体であり、柱体がシート1と線状に接する母線とその近傍を線状領域3aとして、上下に重ねたシート1、2のシート1の下面を支持している。 More specifically, in FIG. 1, the support member 3 is a columnar body, and supports the lower surface of the sheet 1 of the sheets 1 and 2 stacked vertically with the generatrix where the columnar body is in linear contact with the sheet 1 and the vicinity thereof as a linear region 3a.

本開示の効果を確認した装置構成としては、支持部材3の材質をステンレス鋼として、直径1mm程度の棒状ものを用いた。支持部材3の下には、厚さ10mm程度のアルミニュウム板10を台座として配置した。 As the apparatus configuration for confirming the effects of the present disclosure, the support member 3 is made of stainless steel and has a rod shape with a diameter of about 1 mm. An aluminum plate 10 having a thickness of about 10 mm was arranged as a pedestal under the support member 3 .

上下に重ねたシート1、2の上には、溶着対象範囲、つまり、支持部材3で局所的に支持したシート1、2の部分を覆うように、上側のシート2の上面に発熱部材4を置いている。発熱部材4は、0.3mm程度の厚さのステンレス鋼シートを用いた。図1で、発熱部材4の大きさは大きく描いているが、線状領域3aの長さと幅をカバーする程度の大きさにした。 On the vertically stacked sheets 1 and 2, a heat generating member 4 is placed on the upper surface of the upper sheet 2 so as to cover the range to be welded, that is, the parts of the sheets 1 and 2 locally supported by the support member 3. A stainless steel sheet having a thickness of about 0.3 mm was used as the heat generating member 4 . Although the size of the heat generating member 4 is drawn large in FIG. 1, it is made large enough to cover the length and width of the linear region 3a.

発熱部材4の上には、押圧部として厚さ5mm程度の透明ガラス板5を載せた。透明ガラス板5は後述するレーザ光線6aを透過する。なお、図示しない他の押圧部を用いて、透明ガラス板5を発熱部材4に所定の押圧力で押圧した。 A transparent glass plate 5 having a thickness of about 5 mm was placed on the heating member 4 as a pressing portion. The transparent glass plate 5 transmits a laser beam 6a, which will be described later. The transparent glass plate 5 was pressed against the heat generating member 4 with a predetermined pressing force using another pressing portion (not shown).

押圧部としての透明ガラス板5の上方には、レーザ光線照射部6を配置している。レーザ光線照射部6からは、近赤外のレーザ光線6aを集光して発熱部材4に照射している。レーザ光線照射部6のレーザ光線照射制御は、制御部7が行う。なお、レーザ光線6aは、近赤外のレーザ光を照射し、発熱部材4を発熱させるとともに、発熱部材4の材質に応じて最適なレーザ光線を用いる。 A laser beam irradiation unit 6 is arranged above the transparent glass plate 5 as a pressing unit. A near-infrared laser beam 6 a is condensed from the laser beam irradiation unit 6 and irradiated to the heat-generating member 4 . The laser beam irradiation control of the laser beam irradiation unit 6 is performed by the control unit 7 . The laser beam 6a irradiates a near-infrared laser beam to heat the heat-generating member 4, and an optimum laser beam is used according to the material of the heat-generating member 4. FIG.

発明理解のために、図2(a)~(f)では、本発明の第一実施形態のレーザ溶着作業手順を遷移図として示した。なお、発熱部材4の内、発熱している範囲がイメージとして把握できるように、交差した細線(ハッチング)を付けた範囲を発熱範囲(H)として、符号「H」で図示した。 For better understanding of the invention, FIGS. 2(a) to 2(f) show transition diagrams of the laser welding operation procedure of the first embodiment of the present invention. In order to visualize the heat-generating range of the heat-generating member 4, the range with crossed thin lines (hatching) is designated as the heat-generating range (H) and indicated by the symbol "H".

図2(a)では、重ねたシート1、2を、シート1の下面に、支持部材3の最上部の線状領域3aを当接して支持している。図2(a)では、押圧部である透明ガラス板5と発熱部材4が、シート1、2に向けて一体的に下降する直前の位置関係を示した。 In FIG. 2A, the stacked sheets 1 and 2 are supported by contacting the lower surface of the sheet 1 with the uppermost linear region 3a of the support member 3. In FIG. FIG. 2(a) shows the positional relationship immediately before the transparent glass plate 5, which is the pressing portion, and the heat-generating member 4 integrally descend toward the sheets 1 and 2. FIG.

図2(b)では、シート1、2を発熱部材4と支持部材3で挟んだ状態で、制御部7がレーザ光線照射部6でレーザ光線6aを発熱部材4に照射して、発熱部材4の発熱が始まった状態を示している。発熱部材4の上部に小さい発熱範囲Hが出来ている。 FIG. 2B shows a state where the sheets 1 and 2 are sandwiched between the heat-generating member 4 and the support member 3, and the control unit 7 irradiates the heat-generating member 4 with a laser beam 6a from the laser beam irradiation unit 6, and heat generation of the heat-generating member 4 is started. A small heat-generating range H is formed in the upper portion of the heat-generating member 4 .

図2(c)では、レーザ光線照射部6からレーザ光線6aを発熱部材4に照射し続けることにより、発熱範囲Hが下方に拡大してシート2からシート1に達した状態を示した。図2(c)の状態は、発熱部材4の熱がシート2からシート1に伝わり始めた状態である。 FIG. 2(c) shows a state in which the heat generation range H expands downward and reaches from the sheet 2 to the sheet 1 by continuously irradiating the heat generating member 4 with the laser beam 6a from the laser beam irradiation unit 6. FIG. The state of FIG. 2(c) is a state in which the heat of the heat-generating member 4 has started to be transmitted from the sheet 2 to the sheet 1. As shown in FIG.

図2(d)では、発熱部材4からの熱が、シート1、2を突き抜けて支持部材3に伝わり、発熱範囲Hはシート1、2から支持部材3内部に達している。シート1、2が接している面の内、支持部材3で局所的に支持されている部分に対応する部分(溶着部分K)が発熱部材4からの熱で溶融し溶着する。 In FIG. 2D, heat from the heat generating member 4 passes through the sheets 1 and 2 and is transmitted to the support member 3, and the heat generation range H reaches the interior of the support member 3 from the sheets 1 and 2. In FIG. Of the surfaces where the sheets 1 and 2 are in contact, the portion (welded portion K) corresponding to the portion locally supported by the support member 3 is melted and welded by the heat from the heat generating member 4 .

図2(e)では、制御部7がレーザ光線照射部6のレーザ光線照射を止めたとき、発熱部材4の発熱が止まり、溶融していたシート1、2の局所的に支持されている部分が冷却し、溶着部分Kが固化するときの状態を示した。 FIG. 2(e) shows a state in which when the control unit 7 stops the laser beam irradiation of the laser beam irradiation unit 6, the heat generation of the heat generating member 4 stops, the locally supported portions of the sheets 1 and 2 that have been melted cool, and the welded portion K solidifies.

なお、シート1、2の局所的に支持されている部分が溶着されて溶着部分Kとなるので、支持部材3の線状領域3aの曲率半径等の形状により、溶着部分Kの幅を1mm以下の細い溶着幅にすることもできる。 Since the locally supported portions of the sheets 1 and 2 are welded to form the welded portion K, the width of the welded portion K can be set to a narrow weld width of 1 mm or less depending on the shape such as the curvature radius of the linear region 3a of the support member 3.

図2(f)では、シート1、2から発熱部材4と支持部材3を、それぞれ上下に離した状態を示している。このようにして、ポリイミドシートのシート1、2を溶着している。 FIG. 2(f) shows a state in which the heat-generating member 4 and the support member 3 are separated from the sheets 1 and 2 vertically. Thus, the sheets 1 and 2 of the polyimide sheets are welded together.

上述の通り、本実施形態では、シート1、2を支持部材3の線状領域3aで局所的に支持し、レーザ光線照射部6のレーザ光線6aを発熱部材4に集中して照射し、発熱部材4で生じた熱を、支持部材3の線状領域3aで局所的に支持している部分に流して、シート1、2を発熱・溶融して溶着している。 As described above, in this embodiment, the sheets 1 and 2 are locally supported by the linear regions 3a of the support member 3, the laser beam 6a of the laser beam irradiation unit 6 is focused on the heat generating member 4, and the heat generated by the heat generating member 4 is directed to the portion locally supported by the linear regions 3a of the support member 3, thereby heating and melting the sheets 1 and 2 for welding.

本実施形態に係るシートのレーザ溶着装置と、シートのレーザ溶着方法では、シート1の下面を線状領域3aで支持する支持部材3と、シート2の上面を覆う発熱部材4と、発熱部材4をシート2に押圧する透明ガラス板5と、発熱部材4にレーザ光線6aを照射して発熱させるレーザ光線照射部6と、制御部7と、を用い、シート1の下面を支持部材3の線状領域3aで局所的に支持し、シート2の上面を発熱部材4で覆い、透明ガラス板5で発熱部材4をシート2の上面に押圧して密着させた状態で、制御部7により、レーザ光線照射部6から発熱部材4にレーザ光線6aを照射して発熱させ、発熱部材4で生じた熱を支持部材3の線状領域3aに向けて伝えることにより、シート1、2の局所的に支持している部分を加熱して溶着する制御をしている。 In the sheet laser welding apparatus and sheet laser welding method according to the present embodiment, the support member 3 that supports the lower surface of the sheet 1 with the linear regions 3a, the heat generating member 4 that covers the upper surface of the sheet 2, the transparent glass plate 5 that presses the heat generating member 4 against the sheet 2, the laser beam irradiation unit 6 that irradiates the heat generating member 4 with the laser beam 6a to generate heat, and the control unit 7 are used. In a state in which the heat generating member 4 is pressed against the upper surface of the sheet 2 by the transparent glass plate 5 and brought into close contact with the upper surface of the sheet 2, the controller 7 irradiates the heat generating member 4 with a laser beam 6a from the laser beam irradiation unit 6 to generate heat.

本実施形態では、シート1、2を局所的に支持して、レーザ光線照射部6のレーザ光線6aを発熱部材4に照射して、レーザ光線6aを一定量、一定速度で所定量まで供給することにより、発熱部材4で発生した熱を支持部材3の線状領域3aに向けてシート1、2の局所的に支持した部分に流している。この熱でシート1、2の局所的に支持した部分は発熱し、溶融して、溶着する。 In the present embodiment, the sheets 1 and 2 are locally supported, the heat generating member 4 is irradiated with the laser beam 6a of the laser beam irradiation unit 6, and the laser beam 6a is supplied at a constant amount and at a constant speed up to a predetermined amount. This heat causes the locally supported portions of the sheets 1 and 2 to generate heat, melt, and weld.

このように、レーザ光線6aを一定量、一定速度で所定量まで供給することで、シート1、2が溶着するのに必要な熱量で溶着するので、シート1、2を急激に発熱させず、熱変形させず、炭化させず、孔を開けない、という安定的な溶着を行っている。 By supplying the laser beam 6a in a constant amount at a constant speed up to a predetermined amount in this manner, the sheets 1 and 2 are fused with the amount of heat required to fuse the sheets 1 and 2. Therefore, the sheets 1 and 2 are not rapidly heated, thermally deformed, carbonized, or perforated, thereby achieving stable welding.

従来のレーザ溶着技術では、炭化し、孔が開き、きれいな溶着ができないとされていたポリイミドシートの溶着を、熱変形させず、炭化させず、孔を開けず、溶着することを本実施形態は可能とした。 In the conventional laser welding technique, it was said that the polyimide sheets were carbonized, had holes, and could not be welded cleanly. However, the present embodiment has made it possible to weld polyimide sheets without thermal deformation, carbonization, or holes.

そして、接着剤なしで溶着したポリイミドシートを用いた構造物を提供することで、例えば人工衛星等の構造物の軽量化を実現することが可能にした。
なお、本発明の第一実施形態の支持部材3は、局所的な加熱を可能とするものであれば、その他の柱体、例えば角柱であっても良い。角柱の角の部分、つまり稜線部分はシートに線状に接するので本開示の支持部材として用いることが出来る。なお、線状領域が真っすぐな直線でなく、屈折した直線や曲線でできた線状領域であっても良い。
By providing a structure using a polyimide sheet welded without an adhesive, it has become possible to reduce the weight of structures such as artificial satellites.
Note that the support member 3 of the first embodiment of the present invention may be any other columnar body, such as a square column, as long as it enables local heating. The corner portions of the prism, that is, the ridge line portions are linearly in contact with the sheet and can be used as the support member of the present disclosure. Note that the linear region may be a linear region made up of bent straight lines or curved lines instead of a straight straight line.

(第一実施形態の変形例)
図3に、本発明の第一実施形態の変形例に係るレーザ溶着装置の原理的な概略構成図を示した。本発明の第一実施形態の変形例では、支持部材30の形状を変えている。
(Modification of first embodiment)
FIG. 3 shows a principled schematic configuration diagram of a laser welding apparatus according to a modification of the first embodiment of the present invention. In a modification of the first embodiment of the invention, the shape of the support member 30 is changed.

本発明の第一実施形態の支持部材3は、図1のように、短い円柱の軸を水平(シート1、2と平行)にした形であった。シート1の下面に接する母線は直線であり、直線とその近傍という線状領域3aでシート1を支持していた。円柱の軸方向の長さを短くして薄い円板にすれば、シート1の下面に接する線状領域の長さは短くなり、点状領域に近づくが、支持部材3を薄い円板にすると、強度が弱くなるという問題があった。 The support member 3 of the first embodiment of the present invention was in the form of a short cylinder whose axis was horizontal (parallel to the sheets 1 and 2), as shown in FIG. A generatrix in contact with the lower surface of the sheet 1 is a straight line, and the sheet 1 is supported by a linear region 3a consisting of the straight line and its vicinity. If the length of the cylinder in the axial direction is shortened to form a thin disc, the length of the linear region in contact with the lower surface of the sheet 1 is shortened and approaches the point-like region, but if the support member 3 is made of a thin disc, there is a problem that the strength is weakened.

第一実施形態の変形例では、図3に示したように、支持部材30の形を、短い円柱の周面の直径を軸方向(厚さ方向)の中央で最大にした形、つまり2つの円錐の底面同士を合わせた形状、例えとしては、算盤珠(そろばんだま)のような形にしている。シート1の下面に接する領域30aが小さくなっても、支持部材30自体は一定の厚みがある。そのため、支持部材30としての一定の強度を保った状態で、周面の直径が最大の所でシート1の下面を支持できる。支持部材30は、シート1の下面を、点とその近傍という点状領域30aでシート1の下面を支持している。レーザ光線6aの照射により発熱部材4で生じた熱は、シート1の下面を支持している支持部材30の点状領域30aに集中するので、シート1、2は、発熱部材4からの熱により、効率よく発熱し、溶融し、溶着する。 In a modification of the first embodiment, as shown in FIG. 3, the shape of the support member 30 is a shape in which the diameter of the peripheral surface of a short cylinder is maximized at the center in the axial direction (thickness direction), that is, a shape in which the bottoms of two cones are put together, for example, a shape like an abacus. Even if the area 30a in contact with the lower surface of the sheet 1 is reduced, the support member 30 itself has a constant thickness. Therefore, the lower surface of the seat 1 can be supported at the point where the diameter of the peripheral surface is maximum while maintaining a certain strength as the support member 30 . The support member 30 supports the lower surface of the seat 1 in a dotted region 30a, which is a point and its vicinity. The heat generated by the heat generating member 4 due to the irradiation of the laser beam 6a is concentrated on the dotted regions 30a of the support member 30 supporting the lower surface of the sheet 1, so that the sheets 1 and 2 are efficiently heated, melted and welded by the heat from the heat generating member 4.

本発明の第一実施形態の変形例では、レーザ光線照射部6のレーザ光線6aを照射して発熱部材4で生じた熱を、シート1、2の支持部材30の点状領域30aで局所的に支持した部分に集中させて流すことができる。これにより、レーザ光線を一定量、一定速度で所定量まで供給することで、シート1、2が溶着するのに必要な熱量で溶着するので、シート1、2が急激に発熱しないように、シート1、2の支持部材30の点状領域30aで局所的に支持した部分が熱変形せず、炭化せず、孔を開けず、安定的に溶着される。 In the modified example of the first embodiment of the present invention, the heat generated by the heat-generating member 4 by irradiating the laser beam 6a of the laser beam irradiation unit 6 can be concentrated and flowed to the portion locally supported by the dotted region 30a of the support member 30 of the sheets 1 and 2. As a result, the sheets 1 and 2 are welded with the amount of heat required for welding by supplying a constant amount of laser beams at a constant speed up to a predetermined amount, so that the sheets 1 and 2 are stably welded without thermally deforming, carbonizing, or perforating the parts locally supported by the dot-like regions 30a of the support member 30 so that the sheets 1 and 2 do not rapidly heat up.

(第二実施形態)
図4に、本発明の第二実施形態に係るレーザ溶着装置の原理的な概略構成図を示した。第二実施形態では、支持部材3を加熱する加熱部11を更に設け、加熱部11により支持部材3を加熱し、支持部材3で生じた熱を支持部材3の線状領域3aからシート1、2に伝えている。
(Second embodiment)
FIG. 4 shows a principled schematic configuration diagram of a laser welding apparatus according to a second embodiment of the present invention. In the second embodiment, a heating unit 11 that heats the support member 3 is further provided, the support member 3 is heated by the heating unit 11, and the heat generated in the support member 3 is transferred from the linear region 3a of the support member 3 to the sheets 1 and 2.

すなわち、図4では、制御部7に接続した加熱部11をアルミニュウム板10の下に配置し、制御部7による制御のもと、加熱部11でアルミニュウム板10を加熱し、アルミニュウム板10の上の支持部材3を加熱するようにしている。 That is, in FIG. 4, the heating unit 11 connected to the control unit 7 is arranged under the aluminum plate 10, and under the control of the control unit 7, the heating unit 11 heats the aluminum plate 10, and the support member 3 on the aluminum plate 10 is heated.

このことにより、発熱部材4からの熱と、支持部材3からの熱がシート1、2の局所的に支持している部分に伝わり、シート1、2の局所的に支持している部分は溶融する。その後、制御部7で、レーザ光線照射部6のレーザ光線照射を止め、シート1、2から発熱部材4と支持部材3を離すと、溶融していたシート1、2の局所的に支持している部分は冷却、固化し、溶着を完成する。 As a result, the heat from the heat generating member 4 and the heat from the support member 3 are transmitted to the locally supported portions of the sheets 1 and 2, and the locally supported portions of the sheets 1 and 2 are melted. Thereafter, when the laser beam irradiation of the laser beam irradiation part 6 is stopped by the control part 7 and the heat generating member 4 and the support member 3 are separated from the sheets 1 and 2, the locally supported parts of the sheets 1 and 2 which have been melted are cooled and solidified to complete the welding.

なお、加熱部11としては、通電加熱装置、電磁誘導加熱装置、輻射加熱装置、レーザ光線照射加熱装置など、各種の加熱方法を用いることが出来る。加熱部11にレーザ光線照射加熱装置を用いた例は、後述する。 As the heating unit 11, various heating methods such as an electric heating device, an electromagnetic induction heating device, a radiation heating device, and a laser beam irradiation heating device can be used. An example using a laser beam irradiation heating device for the heating unit 11 will be described later.

図5(a)~(f)では、本発明の第二実施形態の発明理解のため、支持部材3と発熱部材4の加熱を始めるタイミングを同時にしたときのレーザ溶着作業手順を遷移図として示した。 In FIGS. 5A to 5F, for the purpose of understanding the second embodiment of the present invention, the laser welding work procedure when the timing of starting the heating of the support member 3 and the heat generating member 4 is set at the same time is shown as a transition diagram.

図5(a)では、加熱部11の上にアルミニュウム板10を載せ、アルミニュウム板10の上に支持部材3を載せ、支持部材3の線状領域3aをシート1の下面に当接して支持し、押圧部である透明ガラス板5と発熱部材4を、シート1、2に向けて一体的に下降させる直前の位置関係を示した。 5A shows the positional relationship immediately before the aluminum plate 10 is placed on the heating portion 11, the support member 3 is placed on the aluminum plate 10, the linear region 3a of the support member 3 is in contact with the lower surface of the sheet 1 and supported, and the transparent glass plate 5 and the heat generating member 4, which are the pressing portion, are integrally lowered toward the sheets 1 and 2.

図5(b)では、発熱部材4と支持部材3の発熱が始まった状態を示した。発熱部材4は第一実施形態と同様にレーザ光線照射部6からのレーザ光線6aにより発熱し始め、支持部材3は加熱部11により発熱し始める。発熱している範囲がイメージとして把握できるように、交差した細線(ハッチング)を付けた範囲を発熱範囲(H)として図示した。 FIG. 5B shows a state in which heat generation of the heat generating member 4 and the support member 3 has started. The heat-generating member 4 begins to generate heat by the laser beam 6a from the laser beam irradiation unit 6, and the support member 3 begins to generate heat by the heating unit 11, as in the first embodiment. A range with thin crossed lines (hatched) is shown as a heat generation range (H) so that the heat generation range can be grasped as an image.

図5(c)では、発熱部材4と支持部材3の熱がそれぞれシート1、2に伝わり始めた状態を示した。図5(d)では、発熱部材4からの熱と、支持部材3からの熱とがシート1、2の局所的に支持した部分に伝わり、シート1、2の局所的に支持された部分が溶融する状態を示した。図5(e)では、発熱部材4と支持部材3の発熱を止め、局所的に支持した部分(溶着部分K)が冷却し、固化していく状態を示した。図5(f)では、シート1、2から発熱部材4と支持部材3を、それぞれ上下に離した状態を示した。このようにして、ポリイミドシートのシート1、2を溶着している。 FIG. 5(c) shows a state in which the heat from the heat-generating member 4 and the support member 3 has started to be transmitted to the sheets 1 and 2, respectively. FIG. 5D shows a state in which the heat from the heat generating member 4 and the heat from the support member 3 are transmitted to the locally supported portions of the sheets 1 and 2, and the locally supported portions of the sheets 1 and 2 are melted. FIG. 5(e) shows a state in which heat generation of the heat generating member 4 and the support member 3 is stopped, and the locally supported portion (welded portion K) is cooled and solidified. FIG. 5(f) shows a state in which the heat-generating member 4 and the support member 3 are separated from the sheets 1 and 2, respectively. Thus, the sheets 1 and 2 of the polyimide sheets are welded together.

第二実施形態では、支持部材3を加熱する加熱部11を更に設け、発熱部材4の熱に加えて、加熱部11により加熱した支持部材3で生じた熱を支持部材3の線状領域3aからシート1、2に伝えている。そのため、シート1、2の局所的に支持された部分は、発熱部材4からの熱と支持部材3からの熱により、効率よく発熱し、溶融し、溶着する。そして、第一実施形態と同じく、シート1、2の局所的に支持した部分が熱変形せず、炭化せず、孔を開けず、安定的に溶着される。 In the second embodiment, a heating unit 11 that heats the support member 3 is further provided, and in addition to the heat of the heat generating member 4, the heat generated by the support member 3 heated by the heating unit 11 is transmitted from the linear region 3a of the support member 3 to the sheets 1 and 2. Therefore, the locally supported portions of the sheets 1 and 2 are efficiently heated, melted, and welded by the heat from the heat generating member 4 and the heat from the support member 3 . As in the first embodiment, the locally supported portions of the sheets 1 and 2 are not thermally deformed, carbonized, or perforated, and are stably welded.

(第二実施形態の第一変形例)
図6(a)に、本発明の第二実施形態の第一変形例に係るレーザ溶着装置の概略構成図を示した。本発明の第二実施形態の第一変形例では、支持部材31として、断面が半円である半円柱にしている。支持部材31の上の母線は直線であり、線状領域31aでシート1の下面を支えている。支持部材31の下側は、平面なので、面接触しているアルミニュウム板10を経由して、加熱部11の熱が迅速に伝わる。支持部材31が早く加熱される利点がある。
(First modification of the second embodiment)
FIG. 6(a) shows a schematic configuration diagram of a laser welding apparatus according to a first modification of the second embodiment of the present invention. In the first modified example of the second embodiment of the present invention, the support member 31 is a semicircular column having a semicircular cross section. The generatrix on the support member 31 is straight, and supports the lower surface of the seat 1 in the linear region 31a. Since the lower side of the support member 31 is flat, the heat of the heating part 11 is rapidly transmitted via the aluminum plate 10 which is in surface contact with the support member 31 . There is an advantage that the support member 31 is heated quickly.

(第二実施形態の第二変形例)
図6(b)に、本発明の第二実施形態の第二変形例に係るレーザ溶着装置の概略構成図を示した。本発明の第二実施形態の説明では、支持部材32として、断面がほぼ三角形である三角柱にしている。支持部材32の上の母線は直線であり、線状領域32aでシート1の下面を支えている。支持部材32の下側は、平面なので、面接触しているアルミニュウム板10を経由して、加熱部11の熱が迅速に伝わる。支持部材32が早く加熱される利点がある。
(Second modification of the second embodiment)
FIG. 6(b) shows a schematic configuration diagram of a laser welding apparatus according to a second modification of the second embodiment of the present invention. In the description of the second embodiment of the present invention, the support member 32 is a triangular prism having a substantially triangular cross section. The generatrix on the support member 32 is straight, and supports the lower surface of the seat 1 in the linear region 32a. Since the lower side of the support member 32 is flat, the heat of the heating part 11 is rapidly transmitted via the aluminum plate 10 which is in surface contact with the support member 32 . There is an advantage that the support member 32 is heated quickly.

(第二実施形態の第三変形例)
図7に、本発明の第二実施形態の第三変形例に係るレーザ溶着装置の原理的な概略構成図を示した。本発明の第二実施形態の説明では、支持部材3としてステンレス製の短い円柱、半円柱、三角柱を用いた例を説明したが、本発明の第二実施形態の第三変形例では、支持部材33としてステンレス製の球体を用いて、シート1、2を球体の最上部の点状領域33aで支持している。局所的に支持している部分を小さな点(スポット)として溶着出来る。
(Third Modification of Second Embodiment)
FIG. 7 shows a principled schematic configuration diagram of a laser welding apparatus according to a third modification of the second embodiment of the present invention. In the description of the second embodiment of the present invention, an example of using a stainless steel short cylinder, a semi-cylindrical column, or a triangular prism as the support member 3 was described, but in the third modification of the second embodiment of the present invention, a stainless steel sphere is used as the support member 33, and the sheets 1 and 2 are supported by the dotted regions 33a at the top of the sphere. Locally supported parts can be welded as small spots (spots).

必要により、球体の代わりに三角錐や円錐のような錐体を支持部材としても良い。錐体を支持部材とすれば、シート1の下面を点状領域で支持できるからであり、レーザ光線によるスポット溶着ができるからである。 If necessary, a cone such as a triangular pyramid or a cone may be used as the support member instead of the sphere. This is because if the cone is used as the support member, the lower surface of the sheet 1 can be supported in a dotted area, and spot welding can be performed by a laser beam.

シート1、2の局所的に支持された部分は、発熱部材4からの熱と支持部材3からの熱により、効率よく発熱し、溶融し、溶着する。そして、第一実施形態と同じく、シート1、2の局所的に支持した部分が熱変形せず、炭化せず、孔を開けず、安定的に溶着される。 The locally supported portions of the sheets 1 and 2 are efficiently heated, melted, and welded by the heat from the heat-generating member 4 and the heat from the support member 3 . As in the first embodiment, the locally supported portions of the sheets 1 and 2 are not thermally deformed, carbonized, or perforated, and are stably welded.

(第三実施形態)
先に説明した第一実施形態と第二実施形態では、支持部材で局所的に支持している部分のシートを溶着しているが、溶着する位置は変わらない。支持部材の線状領域、あるいは点状領域で局所的に支持している点状領域部分または短い線状領域部分のシートをスポット的に溶着するにとどまっていた。
(Third embodiment)
In the first embodiment and the second embodiment described above, the sheet is welded at the portion locally supported by the support member, but the welding position does not change. It was limited to spot-welding the sheet of the linear region of the support member, or the dotted region portion or the short linear region portion locally supported by the dotted region.

第三実施形態では、シート1、2を溶着部分が連続した長い線状になるようにしている。すなわち、第三実施形態では、シート1、2を支持部材34で局所的に支持している部分(線状領域34a)に沿って所定方向にレーザ光線照射部6を移動自在に構成している。レーザ光線6aを照射する局所的に支持している部分が移動するので、シート1、2を線状に溶着する長さが長く延長される。そのため、発熱部材4からの熱と、支持部材34からの熱とがシート1、2の内部に支持部材34である長尺の円柱の長手方向に移動していくので、溶着範囲が連続的につながり、シート1、2を長さの長い線状に溶着する。 In the third embodiment, the sheets 1 and 2 are made to have a continuous long line of welded portions. That is, in the third embodiment, the laser beam irradiation unit 6 is configured to be movable in a predetermined direction along the portion (linear region 34a) where the sheets 1 and 2 are locally supported by the support member 34. FIG. Since the locally supported portion irradiated with the laser beam 6a moves, the length of linearly welding the sheets 1 and 2 is elongated. Therefore, the heat from the heat generating member 4 and the heat from the support member 34 are transferred into the sheets 1 and 2 in the longitudinal direction of the long cylinder which is the support member 34, so that the welding range is continuously connected and the sheets 1 and 2 are welded in a long linear shape.

図8に、本発明の第三実施形態に係るレーザ溶着装置の原理的な概略構成図を示した。図8では、支持部材34を長尺の円柱、すなわち「棒材」にしている。また、発熱部材4と透明ガラス板5の長さは、支持部材34に対応した長さにしている。 FIG. 8 shows a principled schematic configuration diagram of a laser welding apparatus according to a third embodiment of the present invention. In FIG. 8, the support member 34 is an elongated cylinder, ie, a "bar". Also, the lengths of the heat generating member 4 and the transparent glass plate 5 are made to correspond to the length of the support member 34 .

図9は、本発明の第三実施形態に係るレーザ溶着装置の要部の斜視図である。図9では、想像線で示した側面視コの字状の移動フレーム50(レーザ光線照射位置移動部)を新たに用い、移動フレーム50の上部にレーザ光線照射部6を、下部に加熱部11とアルミニュウム板10を取り付け、移動フレーム50を支持部材34の長手方向にシート1、2に対して相対的に移動自在にしている。移動フレーム50の移動に伴い、レーザ光線照射部6と、加熱部11が支持部材34の長手方向に移動する。そのため、支持部材34で支持されたシート1、2の内、発熱部材4からの熱と、支持部材34からの熱が付与されて溶着される部分、つまり局部的に支持され、加熱、溶着される部分が、支持部材34の長手方向に連続的に移動する。移動フレーム50の移動速度を、シート1、2を連続溶着するのに必要な速度にすると、レーザ光線を一定量、一定速度で所定量供給することで、シート1、2が溶着するのに必要な熱量で溶着することができる。シート1、2は急激に発熱せず、溶着部分が熱変形せず、炭化せず、孔が開かない溶着を連続的にする。溶着する点状領域あるいは線状領域が連続的につながり、シート1、2の局所的に支持した部分を連続した長さの長い線状に溶着する。 FIG. 9 is a perspective view of essential parts of a laser welding apparatus according to a third embodiment of the present invention. In FIG. 9, a moving frame 50 (laser beam irradiation position moving part) having a U-shaped side view shown by an imaginary line is newly used, and the laser beam irradiation part 6 is attached to the upper part of the moving frame 50, and the heating part 11 and the aluminum plate 10 are attached to the lower part of the moving frame 50, so that the moving frame 50 can be moved relative to the seats 1 and 2 in the longitudinal direction of the support member 34. As the moving frame 50 moves, the laser beam irradiation section 6 and the heating section 11 move in the longitudinal direction of the support member 34 . Therefore, of the sheets 1 and 2 supported by the support member 34, the portion to be welded by applying the heat from the heat generating member 4 and the heat from the support member 34, that is, the portion to be locally supported, heated and welded moves continuously in the longitudinal direction of the support member 34. When the movement speed of the moving frame 50 is set to a speed necessary for continuously welding the sheets 1 and 2, the sheets 1 and 2 can be welded with a heat amount necessary for welding by supplying a predetermined amount of laser beam at a constant speed. The sheets 1 and 2 do not rapidly heat up, the welded portions are not thermally deformed, carbonized, and are continuously welded without opening holes. The dotted areas or linear areas to be welded are continuously connected, and the locally supported portions of the sheets 1 and 2 are welded in continuous long lines.

その他の構成は、第一実施形態のレーザ溶着装置の構成と同じなので、同一部分に同一符号を付して、説明を省略する。 Since other configurations are the same as those of the laser welding apparatus of the first embodiment, the same parts are denoted by the same reference numerals, and descriptions thereof are omitted.

図10では、発熱部材4と支持部材34の発熱が始まった状態を示した。図11では、発熱部材4からの熱と、支持部材34からの熱とがシート1、2の局所的に支持した部分に伝わり、シート1、2の局所的に支持した部分が溶融する状態を示した。 FIG. 10 shows a state in which heat generation of the heat generating member 4 and the support member 34 has started. FIG. 11 shows a state in which the heat from the heat generating member 4 and the heat from the support member 34 are transmitted to the locally supported portions of the sheets 1 and 2, and the locally supported portions of the sheets 1 and 2 are melted.

図11の状態のように、発熱部材4からの熱と、支持部材34からの熱でシート1、2の局所的に支持した部分を溶融させている状態で、移動フレーム50を支持部材34の軸方向に移動することで、シート1、2の局所的に支持した部分を連続した線状に溶着する。 As shown in FIG. 11, the locally supported portions of the sheets 1 and 2 are melted by the heat from the heat generating member 4 and the heat from the support member 34, and the locally supported portions of the sheets 1 and 2 are welded in a continuous line by moving the moving frame 50 in the axial direction of the support member 34.

なお上記の説明では、レーザ光線照射位置移動部として、移動フレーム50にレーザ光線照射部6と、加熱部11とアルミニュウム板10を取り付け、支持部材34の長手方向に移動する例を示したが、レーザ光線照射部6については、レーザ光線6aを反射するミラーを取り付け、ミラー角度を動かしてレーザ光線6aを照射する位置を移動させるなど、他の方法を用いてレーザ光線照射位置を移動しても良い。 In the above description, as the laser beam irradiation position moving unit, an example is shown in which the laser beam irradiation unit 6, the heating unit 11, and the aluminum plate 10 are attached to the moving frame 50 and moved in the longitudinal direction of the support member 34. However, the laser beam irradiation position of the laser beam irradiation unit 6 may be moved using other methods, such as attaching a mirror that reflects the laser beam 6a and moving the position of the laser beam 6a by changing the mirror angle.

(第四実施形態)
図12に、本発明の第四実施形態に係るレーザ溶着方法の原理を示した。本発明の第四実施形態では、発熱部材4と支持部材34の両方の温度を測定する発熱温度測定部20、支持温度測定部21と支持部材34と発熱部材4の両方の温度を制御する温度制御部25を設けている。
(Fourth embodiment)
FIG. 12 shows the principle of the laser welding method according to the fourth embodiment of the present invention. In the fourth embodiment of the present invention, a heat generation temperature measurement unit 20 for measuring the temperatures of both the heat generating member 4 and the support member 34, and a support temperature measurement unit 21 and a temperature control unit 25 for controlling the temperatures of both the support member 34 and the heat generation member 4 are provided.

発熱温度測定部20、支持温度測定部21は、非接触式温度計で発熱部材4、支持部材34それぞれから放射される赤外線を検出し、発熱部材4、支持部材34の温度を検出する。発熱部材4、支持部材34の温度情報は、温度制御部25に集められ、温度制御部25からの温度制御情報を得た制御部7が、発熱部材4を発熱させるレーザ光線照射部6と、発熱部材4を発熱させる加熱部のそれぞれの発熱量を制御する。 The exothermic temperature measurement unit 20 and the support temperature measurement unit 21 detect infrared rays radiated from the exothermic member 4 and the support member 34 with non-contact thermometers, respectively, and detect the temperature of the exothermic member 4 and the support member 34 . The temperature information of the heat-generating member 4 and the support member 34 is collected in the temperature control unit 25, and the control unit 7, which has obtained the temperature control information from the temperature control unit 25, controls the amount of heat generated by the laser beam irradiation unit 6 that heats the heat-generating member 4 and the heating unit that heats the heat-generating member 4.

図13に、本発明の第四実施形態に係るレーザ溶着方法の動作手順の一例をフロー図として示した。まず、重ねたシート1、2のシート1の下面に、支持部材34の、線状領域34aを当てて局所的に支持した状態で、シート2の上面に平板状の発熱部材4を置き、透明ガラス板5で発熱部材4を押圧し、発熱部材4と支持部材34でシート1、2を局所的に所定の圧力で密着させる(ステップST1)。レーザ溶着装置の図示しない溶着動作開始スイッチを入れて、制御部7による溶着動作を開始する(ステップST2)。 FIG. 13 shows an example of the operation procedure of the laser welding method according to the fourth embodiment of the present invention as a flow chart. First, the linear region 34a of the support member 34 is applied to the lower surface of the sheet 1 of the stacked sheets 1 and 2 to locally support them, and the flat heat-generating member 4 is placed on the upper surface of the sheet 2. The heat-generating member 4 is pressed by the transparent glass plate 5, and the heat-generating member 4 and the support member 34 locally adhere the sheets 1 and 2 together with a predetermined pressure (step ST1). A welding operation start switch (not shown) of the laser welding apparatus is turned on to start the welding operation by the controller 7 (step ST2).

そして、本実施形態のレーザ溶着装置のレーザ光線照射部6と加熱部11を起動して、レーザ光線照射部6からレーザ光線6aを発熱部材4に照射し、発熱部材4で熱を発生させる。発熱部材4の厚さは、0.3mm程度であり、レーザ光線6aを受けると一定の面積に広がり、発生した熱をシート2の上面から、シート1、2の局所的に支持した部分に伝える。加熱部11は、通電加熱により発熱し、熱はアルミニュウム板10を介して、支持部材34の線状領域34aの熱を、シート1の下面からシート1、2の局所的に支持した部分に伝える。そして、レーザ光線照射部6と加熱部11を所定の移動速度(mm/秒)で支持部材34に沿って移動させ、局所的に支持したシート1、2の部分を加熱する(ステップST3)。 Then, the laser beam irradiation unit 6 and the heating unit 11 of the laser welding apparatus of the present embodiment are activated, and the laser beam irradiation unit 6 irradiates the heat generating member 4 with the laser beam 6a, thereby causing the heat generating member 4 to generate heat. The heat generating member 4 has a thickness of about 0.3 mm, spreads over a certain area when receiving the laser beam 6a, and transfers the generated heat from the upper surface of the sheet 2 to the locally supported portions of the sheets 1 and 2. The heating portion 11 generates heat by electric heating, and the heat is transferred from the lower surface of the sheet 1 to the locally supported portions of the sheets 1 and 2 via the aluminum plate 10 in the linear regions 34a of the support member 34. Then, the laser beam irradiation unit 6 and the heating unit 11 are moved along the support member 34 at a predetermined moving speed (mm/sec) to heat the locally supported portions of the sheets 1 and 2 (step ST3).

発熱温度測定部20により検出した発熱部材4の温度(T1)と支持温度測定部21により検出した支持部材34の温度(T4)がそれぞれ、予め定めた温度(基準T1aとT4a)、例えばポリイミドシートであれば、ポリイミドの融点温度(565℃)を基準として比較し(ステップST4)、基準に対して一定範囲より低いときは加熱量を増やし(ステップST5)、基準に対して一定範囲より高いときは加熱量を減らし(ステップST6)、図示しない空気吹付部により冷却空気をシート1、2に吹き付ける(ステップST19)。融点温度を基準に一定範囲内であるときは、加熱を継続する(ステップST7)。融点温度を基準に一定範囲内の温度で、所定時間加熱した時は、加熱完了であるか否かの判断をする(ステップST8)。加熱が完了していないときはステップST4に戻り(ステップST8のNO)、加熱を継続する。加熱を完了したときは(ステップST8のYES)、加熱を止め、発熱部材4と支持部材34のシート1、2への密着を解除する(ステップST9)。発熱部材4と支持部材34の温度が、ポリイミドの融点温度を基準に一定範囲より小さくなれば、ブザーを鳴らして溶着作業を終了する(ステップST11)。なお、融点温度を基準とした一定範囲とは、ポリイミドシートが熱変形しない、炭化しない、孔が開かない、温度範囲である。 The temperature (T1) of the heat generating member 4 detected by the heat generation temperature measuring unit 20 and the temperature (T4) of the supporting member 34 detected by the supporting temperature measuring unit 21 are compared with predetermined temperatures (references T1a and T4a), for example, the melting point temperature (565°C) of polyimide in the case of a polyimide sheet (step ST4). Cooling air is blown onto the sheets 1 and 2 by the blowing unit (step ST19). When the temperature is within a certain range based on the melting point temperature, heating is continued (step ST7). When heating is performed for a predetermined time at a temperature within a certain range based on the melting point temperature, it is determined whether or not the heating is completed (step ST8). When the heating is not completed, the process returns to step ST4 (NO in step ST8) to continue heating. When the heating is completed (YES in step ST8), the heating is stopped, and the heat generating member 4 and the support member 34 are released from the sheets 1 and 2 (step ST9). When the temperatures of the heat-generating member 4 and the support member 34 fall below a certain range based on the melting point of polyimide, a buzzer sounds and the welding operation ends (step ST11). The fixed range based on the melting point temperature is a temperature range in which the polyimide sheet is not thermally deformed, carbonized, or perforated.

上記では、レーザ光線照射部の移動速度(mm/秒)を所定の一定値とした場合を説明した。動作制御のフローに含まれる上記の温度調節に、移動速度調節を組み合わせて制御するようにしてもよい。例えば、図13のフロー図は、図14のようになる。図14では、ステップST4で発熱部材4の温度(T1)と支持部材34の温度(T4)をそれぞれ基準と比較し、温度(T1、T4)が基準に対して一定範囲より低いときは移動速度(mm/秒)を減速し(ステップST20)、温度(T1、T4)が基準に対して一定範囲より高いときは移動速度(mm/秒)を増速する(ステップST21)、という動作ステップを追加しておいて、必要により移動速度(mm/秒)を可変するようにしても良い。 In the above description, a case where the moving speed (mm/sec) of the laser beam irradiation unit is set to a predetermined constant value has been described. The movement speed adjustment may be combined with the temperature adjustment included in the operation control flow. For example, the flow diagram of FIG. 13 becomes as shown in FIG. In FIG. 14, in step ST4, the temperature (T1) of the heat-generating member 4 and the temperature (T4) of the support member 34 are each compared with the reference, and when the temperatures (T1, T4) are lower than a certain range relative to the reference, the movement speed (mm/sec) is reduced (step ST20), and when the temperatures (T1, T4) are higher than the reference, the movement speed (mm/sec) is increased (step ST21). may be made variable.

(第四実施形態の第一変形例)
図15に、本発明の第四実施形態の第一変形例にかかるレーザ溶着装置の支持部材34と発熱部材4の温度を測定する手段である支持温度測定部21と発熱温度測定部22を付けたときの構成を示した。
(First Modification of Fourth Embodiment)
FIG. 15 shows the configuration of the laser welding apparatus according to the first modified example of the fourth embodiment of the present invention when the supporting temperature measuring section 21 and the heat generating temperature measuring section 22, which are means for measuring the temperatures of the supporting member 34 and the heat generating member 4, are attached.

本発明の第二施形態の第一の変形例にかかるレーザ溶着装置では、レーザ光線照射部6のレーザ光線6aを水平方向に出力した後、ハーフミラー6bで90度進行方向を変え、発熱部材4を照射して発熱させている。発熱部材4の温度を測定する発熱温度測定部22は、発熱部材4の上方にあって、ハーフミラー6bを透過して到達する発熱部材4からの熱線をキャッチして温度検出している。発熱部材4の厚さは薄いので、発熱部材4から上方に向かう熱線がハーフミラー6bを透過するのをキャッチすることで、より正確な温度検出ができる。 In the laser welding apparatus according to the first modification of the second embodiment of the present invention, after the laser beam 6a of the laser beam irradiation unit 6 is output in the horizontal direction, the traveling direction is changed by 90 degrees with the half mirror 6b, and the heating member 4 is irradiated with the laser beam to generate heat. A heat generation temperature measuring unit 22 for measuring the temperature of the heat generating member 4 is located above the heat generating member 4 and detects the temperature by catching heat rays from the heat generating member 4 that reach through the half mirror 6b. Since the thickness of the heat-generating member 4 is thin, more accurate temperature detection can be achieved by catching the heat rays traveling upward from the heat-generating member 4 through the half mirror 6b.

支持温度測定部21で支持部材34からの熱線をキャッチして温度を検出しているのは図12の本発明の第四実施形態と同じである。 It is the same as the fourth embodiment of the present invention shown in FIG. 12 that the supporting temperature measuring part 21 catches the heat rays from the supporting member 34 to detect the temperature.

第四実施形態の第一変形例として、発熱部材4の温度を測定する経路22aとレーザ光線照射経路を同軸に配置したときのレーザ溶着装置の構成を説明した。 As the first modified example of the fourth embodiment, the configuration of the laser welding apparatus when the path 22a for measuring the temperature of the heat generating member 4 and the laser beam irradiation path are coaxially arranged has been described.

(第四実施形態の第二変形例)
図16に、本発明の第四実施形態の第二変形例にかかるレーザ溶着装置のシート1、2の溶着対象範囲の温度を測定するシート温度測定部23を付けたときの構成を示した。
(Second Modification of Fourth Embodiment)
FIG. 16 shows the configuration of the laser welding apparatus according to the second modified example of the fourth embodiment of the present invention when a sheet temperature measuring section 23 for measuring the temperature of the welding target range of the sheets 1 and 2 is attached.

本発明の第四実施形態の第二変形例では、シート温度測定部23の検出ターゲットを、支持部材34で局所的に支持したシート1、2の重なり部分にしている。本発明の第四実施形態の第二変形例では、一つのシート温度測定部23でレーザ溶着装置の局所的に支持したシート1、2の重なり部分の温度制御をすることができる。 In the second modification of the fourth embodiment of the present invention, the detection target of the seat temperature measuring section 23 is the overlapping portion of the seats 1 and 2 locally supported by the support member 34 . In the second modification of the fourth embodiment of the present invention, one sheet temperature measuring unit 23 can control the temperature of the overlapped portion of the locally supported sheets 1 and 2 of the laser welding apparatus.

(第五実施形態)
図17に、本発明の第五実施形態に係るレーザ溶着方法の原理を示した。本発明の第五実施形態に係るレーザ溶着方法では、発熱部材4で熱を発生させるための手段としてレーザ光線照射部6を用いるとともに、支持部材34で熱を発生させるための加熱部としても別のレーザ光線照射部60を用いて、発熱部材4と支持部材34で挟んだ状態で、二以上のシート1、2を発熱部材4と支持部材34で発生するそれぞれの熱を用いて溶着するように構成している。
(Fifth embodiment)
FIG. 17 shows the principle of the laser welding method according to the fifth embodiment of the present invention. In the laser welding method according to the fifth embodiment of the present invention, the laser beam irradiation unit 6 is used as a means for generating heat in the heat generating member 4, and another laser beam irradiation unit 60 is used as a heating unit for generating heat in the support member 34, so that two or more sheets 1 and 2 are welded using the respective heat generated by the heat generating member 4 and the support member 34 while being sandwiched between the heat generation member 4 and the support member 34.

図18に、本発明の第五実施形態に係るレーザ溶着方法の原理を示した斜視図を示した。支持部材34は、ステンレス製の円柱(ステンレス棒)であり、円柱の母線が線状領域34aとしてシート1の下面を支持している。支持部材34の下には、透明ガラス板5Dを配置している。そして、透明ガラス板5Dの下方には、レーザ光線照射部60を配置して、レーザ光線照射部60からレーザ光線60aを支持部材34に照射して発熱させ、支持部材34の上の線状領域34aからシート1の下面に熱を伝えるようにしている。 FIG. 18 shows a perspective view showing the principle of the laser welding method according to the fifth embodiment of the present invention. The support member 34 is a stainless steel column (stainless steel bar), and the generatrix of the column supports the lower surface of the sheet 1 as a linear region 34a. A transparent glass plate 5</b>D is arranged under the support member 34 . A laser beam irradiation unit 60 is arranged below the transparent glass plate 5D, and a laser beam 60a is irradiated from the laser beam irradiation unit 60 to the support member 34 to generate heat, and the heat is transferred from the linear region 34a on the support member 34 to the lower surface of the sheet 1.

(第五実施形態の第一の変形例)
図19に、本発明の第五実施形態の第一の変形例に係るレーザ溶着方法の原理を示した。本発明の第五実施形態の第一の変形例では、発熱部材40と支持部材35のそれぞれがシート1、2と当接する部分の裏側に空間部40Air、35Airを形成して肉厚を薄くしている。シート1、2と当接する部分の熱容量を小さくすると、同じレーザ光線照射量でも早く昇温するので、レーザ光線照射量を有効に使うことができる。
(First Modification of Fifth Embodiment)
FIG. 19 shows the principle of the laser welding method according to the first modification of the fifth embodiment of the present invention. In the first modification of the fifth embodiment of the present invention, space portions 40Air and 35Air are formed on the back sides of portions of the heating member 40 and the support member 35 that contact the sheets 1 and 2, respectively, to reduce the thickness. If the heat capacity of the portion in contact with the sheets 1 and 2 is reduced, the temperature rises quickly even with the same amount of laser beam irradiation, so the laser beam irradiation amount can be used effectively.

(第五実施形態の第二の変形例)
図20に、本発明の第五実施形態に係るレーザ溶着装置の第二の変形例で、発熱部材41と支持部材36の外周側面を断熱材70U、70Dで囲んだ構成を示した。発熱部材41と支持部材36で発生した熱は、それぞれ断熱材70U、70Dで囲まれているため、熱量が蓄積されて早く昇温するため、レーザ光線照射量を有効に使うことができる。
(Second Modification of Fifth Embodiment)
FIG. 20 shows a second modification of the laser welding apparatus according to the fifth embodiment of the present invention, in which the outer peripheral side surfaces of the heat generating member 41 and the support member 36 are surrounded by heat insulating materials 70U and 70D. Since the heat generated by the heat generating member 41 and the support member 36 is surrounded by the heat insulating materials 70U and 70D, respectively, the amount of heat is accumulated and the temperature rises quickly, so the laser beam irradiation amount can be used effectively.

(第六実施形態)
図21に、本発明の第四実施形態に係るレーザ溶着方法の原理を示した。本発明の第六実施形態では、発熱部材4と支持部材37の間に三枚のシート1a、1b、2を挟み、三枚のシート1a、1b、2を一度に溶着する構成を示した。第六実施形態では、シートの溶着は、一対のシートだけでなく、三枚を超えるシートの溶着が可能であることを示した。
(Sixth embodiment)
FIG. 21 shows the principle of the laser welding method according to the fourth embodiment of the present invention. In the sixth embodiment of the present invention, three sheets 1a, 1b, 2 are sandwiched between the heat-generating member 4 and the support member 37, and the three sheets 1a, 1b, 2 are welded together. In the sixth embodiment, the welding of sheets was shown to be possible not only for a pair of sheets, but also for welding more than three sheets.

(第七実施形態)
図22に、本発明の第七実施形態に係るレーザ溶着方法の原理を示した。本発明の第七実施形態では、シート2a、2bの端面を突き合せ、シート2a、2bの突き合せ面の上に発熱部材4を載せ、シート2a、2bの突き合せ面の下にステンレスシート製の発熱シート42を配置して、その下を支持部材39で支持している。
(Seventh embodiment)
FIG. 22 shows the principle of the laser welding method according to the seventh embodiment of the invention. In the seventh embodiment of the present invention, the end faces of the sheets 2a and 2b are butted together, the heat generating member 4 is placed on the butted surfaces of the sheets 2a and 2b, the heat generating sheet 42 made of stainless steel is placed under the butted surfaces of the sheets 2a and 2b, and the support member 39 is supported thereunder.

これは、シート2a、2bの突き合せ面の下を直接支持部材39の線状領域39aで支えると、シート2a、2bの突き合せ面が離れてしまうので、シート2a、2bの突き合せ面の下をステンレスシート製の発熱シート42の平面を当てて、突き合せ面が離れないようにしているためである。 This is because if the lower surfaces of the sheets 2a and 2b butted against each other are directly supported by the linear region 39a of the support member 39, the butted surfaces of the sheets 2a and 2b separate from each other.

なお、同様の効果を得る方法として、支持部材39の線状領域39aの線の太さを太くして「一定の太さのある線状領域」としても良いし、支持部材39とステンレスシート製の発熱シート42を一体化しても良い。 As a method for obtaining the same effect, the line thickness of the linear region 39a of the support member 39 may be increased to form a "linear region having a constant thickness", or the support member 39 and the heat generating sheet 42 made of a stainless steel sheet may be integrated.

発熱部材4と支持部材39で発生した熱は、シート2a、2bの突き合せ合せ面を加熱し、溶融させる。その後、発熱部材4と支持部材39で熱の発生を止めると、支持部材39で支持されているシート2a、2bの突き合せ面は、冷却、固化して、溶着される。 The heat generated by the heating member 4 and the support member 39 heats and melts the mating surfaces of the sheets 2a and 2b. Thereafter, when heat generation is stopped by the heat generating member 4 and the support member 39, the abutting surfaces of the sheets 2a and 2b supported by the support member 39 are cooled, solidified, and welded.

第七実施形態では、ポリイミドシートなどのシートを突き合せ溶着することが出来ることを説明した。 In the seventh embodiment, it was described that sheets such as polyimide sheets can be butt welded.

(第八実施形態)
図23に、本発明の第八実施形態に係るレーザ溶着装置で溶着している状態を外観斜視図で示した。
(Eighth embodiment)
FIG. 23 is an external perspective view showing a state of welding by the laser welding apparatus according to the eighth embodiment of the present invention.

第一実施形態から第七実施形態では、支持部材として主として円柱を水平にした状態で、所定位置に固定して、あるいは、支持部材としての円柱の軸に沿って、円柱の長手方向に直線状に溶着する実施例を説明した。 In the first to seventh embodiments, examples were described in which a column as a support member was mainly horizontally placed and fixed at a predetermined position, or welded linearly in the longitudinal direction of the column along the axis of the column as the support member.

本発明の第八実施形態では、支持部材3としての円柱をシート1、2に対して軸回りに転動する動作をさせて、直線でない任意の形に溶着する実施例を説明する。 In the eighth embodiment of the present invention, an example will be described in which a cylinder as a support member 3 is rolled around its axis with respect to the sheets 1 and 2 and welded in an arbitrary shape other than a straight line.

本発明の第八実施形態では、支持部材39としての円柱を回転自在に支持し、図示しない転動駆動手段で時計方向回転、あるいは反時計方向に回転させ、支持部材39としての円柱の表面がシート1の下面を転動して、支持位置を移動できるようにしている。 In the eighth embodiment of the present invention, a cylinder as the support member 39 is rotatably supported and rotated clockwise or counterclockwise by a rolling driving means (not shown), so that the surface of the cylinder as the support member 39 rolls on the lower surface of the seat 1 to move the support position.

また、レーザ光線照射部6も、支持部材39としての円柱の転動動作に連動して、円柱の軸方向(図24のY方向)の移動(Y1、Y2)、と、円柱の軸に対して直角方向(図24のX方向)の移動(X1、X2)ができるようにしている。つまり、レーザ光線照射部6は、発熱部材4と支持部材39でシート1、2を挟んだ形で、任意の形状の軌跡で移動することができる。 In addition, the laser beam irradiation unit 6 is also interlocked with the rolling motion of the cylinder serving as the support member 39, so that it can move (Y1, Y2) in the axial direction (Y direction in FIG. 24) of the cylinder and move (X1, X2) in the direction (X direction in FIG. 24) perpendicular to the axis of the cylinder. In other words, the laser beam irradiation unit 6 can move along a trajectory of any shape with the sheets 1 and 2 sandwiched between the heating member 4 and the support member 39 .

例えば図24では本発明の第八実施形態に係るレーザ溶着装置によりシートを五角形の軌跡でレーザ光線照射位置を移動させた平面図を示しており、図24のように2枚のシート1、2を溶着して五角形の溶着部分を作ることができる。図24では、五角形の溶着部分の溶着強度増加と密封性(水密性)向上のため、内側と中央と外側に五角形の溶着部分K1、K2を作っている。 For example, FIG. 24 shows a plan view in which the laser beam irradiation position is moved along a pentagonal trajectory by the laser welding apparatus according to the eighth embodiment of the present invention. As shown in FIG. 24, two sheets 1 and 2 can be welded to form a pentagonal welded portion. In FIG. 24, pentagonal welded portions K1 and K2 are formed on the inside, the center, and the outside in order to increase the welding strength of the pentagonal welded portion and improve the sealing performance (watertightness).

その後、図24に示したシート1、2から溶着した五角形の袋(S)の周囲(W)を切り取れば、図25、図26のように、五角形の袋(S)ができる。他に、四角形、六角形、七角形、八角形など任意の多角形の袋や円形の袋を作ることができる。 After that, by cutting the perimeter (W) of the pentagonal bag (S) welded from the sheets 1 and 2 shown in FIG. 24, the pentagonal bag (S) is obtained as shown in FIGS. In addition, it is possible to make any polygonal bag such as square, hexagon, heptagon, octagon, or circular bag.

また、図27、図28のように、レーザ溶着する際に、五角形の袋(Sa)部分に内容物入れるための通路(P)を形成すれば、通路(P)から五角形の袋部分に高温の内容物を収納できる。つまり、ポリイミドシートを用いた耐熱性密封袋を作ることができる。 Also, as shown in FIGS. 27 and 28, if a passage (P) for putting contents into the pentagonal bag (Sa) is formed during laser welding, high-temperature contents can be stored from the passage (P) into the pentagonal bag. In other words, a heat-resistant hermetic bag can be made using a polyimide sheet.

以上説明したとおり、本開示は、ポリイミドシートなどのシートを溶着できる、新しいレーザ溶着方法とレーザ溶着装置を実現している。 As described above, the present disclosure realizes a new laser welding method and laser welding apparatus capable of welding sheets such as polyimide sheets.

本開示は、シートの材料がレーザ光線の吸収が悪い。そのため、発熱が鈍い。温度が上がるとレーザ光線を吸収しやすくなるが、吸収し始めると急に温度が上がる。急に温度が上がると炭化してしまう。孔が開く。レーザ光線を照射したときシートの変化が急激に起きる。そのため、温度コントロールがきかない。と言う、ポリイミドシートのようなシートを溶着するのに適用することが出来る。 The present disclosure indicates that the material of the sheet has poor absorption of laser light. Therefore, heat generation is slow. As the temperature rises, it becomes easier to absorb the laser beam, but when it begins to absorb, the temperature rises suddenly. If the temperature rises suddenly, it will carbonize. holes open. When the laser beam is applied, the sheet changes abruptly. Therefore, temperature control is not effective. It can be applied to weld sheets such as polyimide sheets.

1 第一のシート
2 第二のシート
3 支持部材
3a 線状領域
4 発熱部材
5 透明ガラス板
6、60 レーザ光線照射部
6a、60a レーザ光線
6b レーザ光線半反射ミラー(レーザ光線ハーフミラー)
7 制御部
20、22 発熱温度測定部
21 支持温度測定部
23 シート温度測定部
25 温度制御部
70U、70D 断熱材
REFERENCE SIGNS LIST 1 first sheet 2 second sheet 3 support member 3a linear region 4 heat generating member 5 transparent glass plate 6, 60 laser beam irradiation unit 6a, 60a laser beam 6b laser beam semi-reflecting mirror (laser beam half mirror)
7 control unit 20, 22 heat generation temperature measurement unit 21 support temperature measurement unit 23 seat temperature measurement unit 25 temperature control unit 70U, 70D heat insulating material

Claims (22)

シートの下面を線状領域で支持する線状領域支持部材と、
前記シートの上面を覆う発熱部材と、
前記発熱部材を前記シートに押圧する押圧部と、
前記発熱部材にレーザ光線を照射して発熱させるレーザ光線照射部と、
制御部と、を有し、
前記シートの上面の第1の領域を前記発熱部材で覆い、前記第1の領域と対向する前記シートの下面の第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、前記押圧部で前記発熱部材を前記シートの上面に押圧して密着させた状態で、
前記制御部により、前記レーザ光線照射部から前記発熱部材にレーザ光線を照射して発熱させ、前記発熱部材で生じた熱を前記線状領域支持部材の線状領域に向けて伝えることにより、前記シートを加熱して溶着する制御をするように構成した、ことを特徴とするシートのレーザ溶着装置。
a linear area support member that supports the lower surface of the sheet in linear areas;
a heat-generating member covering the upper surface of the sheet;
a pressing portion that presses the heat generating member against the sheet;
a laser beam irradiation unit that irradiates the heat generating member with a laser beam to generate heat;
a control unit;
A first area of the upper surface of the sheet is covered with the heat generating member, an arbitrary position of a second area of the lower surface of the sheet facing the first area is supported by the linear area of the linear area support member, and the heat generating member is pressed against the upper surface of the sheet by the pressing portion so as to be in close contact,
The sheet laser welding apparatus is characterized in that the sheet laser welding apparatus is configured such that the controller controls heating and welding of the sheet by irradiating the heat-generating member with a laser beam from the laser beam irradiation unit to generate heat, and transferring the heat generated by the heat-generating member toward the linear regions of the linear region support member.
請求項1のシートのレーザ溶着装置に、更に、前記線状領域支持部材を加熱する加熱部を設け、
前記シートの上面の前記第1の領域を前記発熱部材で覆い、前記シートの下面の前記第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、前記押圧部で前記発熱部材を前記シートの上面に押圧して密着させた状態で、
前記制御部により、前記レーザ光線照射部から前記発熱部材にレーザ光線を照射して発熱させ、前記発熱部材で生じた熱を前記線状領域支持部材の線状領域に向けて伝えるとともに、
前記加熱部で前記線状領域支持部材の線状領域を発熱させ、線状領域で生じた熱を前記シートへ伝えることにより、前記シートを加熱して溶着する制御をするように構成した、ことを特徴とするシートのレーザ溶着装置。
The sheet laser welding apparatus according to claim 1 is further provided with a heating unit for heating the linear region support member,
The first area on the upper surface of the sheet is covered with the heat-generating member, an arbitrary position of the second area on the lower surface of the sheet is supported by the linear area of the linear area support member, and the heat-generating member is pressed against the upper surface of the sheet by the pressing portion so as to be in close contact with the upper surface of the sheet.
The controller causes the heat-generating member to generate heat by irradiating the heat-generating member with a laser beam from the laser beam irradiation unit, and transmits the heat generated by the heat-generating member toward the linear region of the linear region support member,
The sheet laser welding apparatus is characterized in that the heating section heats the linear regions of the linear region support member and transfers the heat generated in the linear regions to the sheet, thereby heating and welding the sheet.
請求項1のシートのレーザ光線照射部に、レーザ光線照射位置を移動させるレーザ光線照射位置移動部を設け、
前記レーザ光線照射位置を、前記シートを前記線状領域支持部材の線状領域が支持している支持位置に沿って移動させるように構成し、
前記シートの上面の前記第1の領域を前記発熱部材で覆い、前記シートの下面の前記第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、前記押圧部で前記発熱部材を前記シートの上面に押圧した状態で、
前記制御部により、前記レーザ光線照射部から前記発熱部材にレーザ光線を照射して発熱させ、前記発熱部材で生じた熱を前記線状領域支持部材の線状領域に向けて伝えることにより前記シートを加熱して溶着するとともに、
前記レーザ光線照射位置を移動させ、前記シートを前記線状領域支持部材の線状領域に沿った一定範囲を溶着する制御をするように構成した、ことを特徴とするシートのレーザ溶着装置。
A laser beam irradiation position moving part for moving the laser beam irradiation position is provided in the laser beam irradiation part of the sheet of claim 1,
The laser beam irradiation position is configured to move the sheet along a support position supported by the linear regions of the linear region support member,
The first area on the upper surface of the sheet is covered with the heat generating member, an arbitrary position of the second area on the lower surface of the sheet is supported by the linear area of the linear area support member, and the pressing portion presses the heat generating member against the upper surface of the sheet,
The control unit irradiates the heat-generating member with a laser beam from the laser beam irradiation unit to generate heat, and transfers the heat generated by the heat-generating member toward the linear regions of the linear region support member to heat and weld the sheet,
A sheet laser welding apparatus characterized in that the laser beam irradiation position is moved and the sheet is controlled to weld a certain range along the linear region of the linear region support member.
請求項2のシートのレーザ溶着装置に、レーザ光線照射部のレーザ光線照射位置を移動させるレーザ光線照射位置移動部を設け、
更に、加熱部を移動させる加熱位置移動部を設け、
前記レーザ光線照射位置と前記加熱部による加熱位置を、前記シートを前記線状領域支持部材の線状領域が支持している支持位置に沿って移動させるように構成し、
前記シートの上面の前記第1の領域を前記発熱部材で覆い、前記シートの下面の前記第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、前記押圧部で前記発熱部材を前記シートの上面に押圧して密着させた状態で、
前記制御部により、前記レーザ光線照射部から前記発熱部材にレーザ光線を照射して発熱させて前記発熱部材で生じた熱を前記線状領域支持部材の線状領域に向けて伝え、前記加熱部で前記線状領域支持部材の線状領域を発熱させて線状領域で生じた熱を前記シートへ伝え、前記シートを加熱して溶着するとともに、
前記レーザ光線照射位置と加熱部の加熱位置を移動させ、前記シートを前記線状領域支持部材の線状領域に沿った一定範囲を溶着する制御をするように構成した、ことを特徴とするシートのレーザ溶着装置。
The sheet laser welding apparatus according to claim 2 is provided with a laser beam irradiation position moving unit for moving the laser beam irradiation position of the laser beam irradiation unit,
Furthermore, a heating position moving unit for moving the heating unit is provided,
The laser beam irradiation position and the heating position by the heating unit are configured to move the sheet along the support position supported by the linear region of the linear region support member,
The first area on the upper surface of the sheet is covered with the heat-generating member, an arbitrary position of the second area on the lower surface of the sheet is supported by the linear area of the linear area support member, and the heat-generating member is pressed against the upper surface of the sheet by the pressing portion so as to be in close contact with the upper surface of the sheet.
The controller causes the heat-generating member to generate heat by irradiating the heat-generating member with a laser beam from the laser beam irradiation unit to transmit the heat generated by the heat-generating member toward the linear regions of the linear region support member, and the heating unit heats the linear region of the linear region support member and transmits the heat generated in the linear region to the sheet, thereby heating and welding the sheet.
A sheet laser welding apparatus characterized in that the laser beam irradiation position and the heating position of the heating unit are moved, and the sheet is controlled to weld a certain range along the linear region of the linear region support member.
シートの下面を線状領域で支持する前記線状領域支持部材に代えて、シートの下面の前記第2の領域の任意の位置を点状領域で支持する点状領域支持部材を用いたことを特徴とする請求項1から4のいずれかに記載のシートのレーザ溶着装置。 5. The laser welding apparatus for sheets according to claim 1, wherein a point-like area supporting member supporting an arbitrary position of the second area of the bottom surface of the sheet is used instead of the linear area-supporting member that supports the lower surface of the sheet in a linear area. シートの下面を線状領域で支持する線状領域支持部材と、
前記シートの上面を覆う発熱部材と、
前記発熱部材を前記シートに押圧する押圧部と、
前記発熱部材にレーザ光線を照射して発熱させるレーザ光線照射部と、
制御部と、を有するレーザ溶着装置を用いて、
前記シートの上面の第1の領域を前記発熱部材で覆い、前記第1の領域と対向する前記シートの下面の第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、前記押圧部で前記発熱部材を前記シートの上面に押圧して密着させた状態で、
前記制御部により、前記レーザ光線照射部から前記発熱部材にレーザ光線を照射して発熱させ、前記発熱部材で生じた熱を前記シートから前記線状領域支持部材の線状領域に向けて伝え、前記シートを加熱して溶着するようにした、ことを特徴とするシートのレーザ溶着方法。
a linear area support member that supports the lower surface of the sheet in linear areas;
a heat-generating member covering the upper surface of the sheet;
a pressing portion that presses the heat generating member against the sheet;
a laser beam irradiation unit that irradiates the heat generating member with a laser beam to generate heat;
Using a laser welding device having a control unit,
A first area of the upper surface of the sheet is covered with the heat generating member, an arbitrary position of a second area of the lower surface of the sheet facing the first area is supported by the linear area of the linear area support member, and the heat generating member is pressed against the upper surface of the sheet by the pressing portion so as to be in close contact,
A laser welding method for sheets, wherein the controller irradiates the heat-generating member with a laser beam from the laser beam irradiation unit to generate heat, transfers the heat generated by the heat-generating member from the sheet to the linear regions of the linear region support member, and heats and welds the sheet.
請求項6のシートのレーザ溶着装置に、更に、前記線状領域支持部材を加熱する加熱部を設け、
前記シートの上面の前記第1の領域を前記発熱部材で覆い、前記シートの下面の前記第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、前記押圧部で前記発熱部材を前記シートの上面に押圧して密着させた状態で、
前記制御部により、前記レーザ光線照射部から前記発熱部材にレーザ光線を照射して発熱させ、前記発熱部材で生じた熱を前記線状領域支持部材の線状領域に向けて伝えるとともに、
前記加熱部で前記線状領域支持部材の線状領域を発熱させ、線状領域で生じた熱を前記シートへ伝えることにより、前記シートを加熱して溶着するようにした、ことを特徴とするシートのレーザ溶着方法。
The sheet laser welding apparatus according to claim 6 is further provided with a heating unit for heating the linear region support member,
The first area on the upper surface of the sheet is covered with the heat-generating member, an arbitrary position of the second area on the lower surface of the sheet is supported by the linear area of the linear area support member, and the heat-generating member is pressed against the upper surface of the sheet by the pressing portion so as to be in close contact with the upper surface of the sheet.
The controller causes the heat-generating member to generate heat by irradiating the heat-generating member with a laser beam from the laser beam irradiation unit, and transmits the heat generated by the heat-generating member toward the linear region of the linear region support member,
A laser welding method for sheets, wherein the linear regions of the linear region supporting member are heated by the heating unit, and the heat generated in the linear regions is transferred to the sheet to heat and weld the sheet.
請求項のシートのレーザ光線照射部に、レーザ光線照射位置を移動させるレーザ光線照射位置移動部を設け、
前記レーザ光線照射位置を、前記シートを前記線状領域支持部材の線状領域が支持している支持位置に沿って移動させるように構成したレーザ溶着装置を用いて、
前記シートの上面の前記第1の領域を前記発熱部材で覆い、前記シートの下面の前記第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、前記押圧部で前記発熱部材を前記シートの上面に押圧して密着させた状態で、
前記制御部により、前記レーザ光線照射部から前記発熱部材にレーザ光線を照射して発熱させ、前記発熱部材で生じた熱を前記線状領域支持部材の線状領域に向けて伝えることにより前記シートを加熱して溶着するとともに、
前記レーザ光線照射位置を移動させ、前記シートを前記線状領域支持部材の線状領域に沿った一定範囲を溶着する制御をするように構成した、ことを特徴とするシートのレーザ溶着方法。
A laser beam irradiation position moving part for moving the laser beam irradiation position is provided in the laser beam irradiation part of the sheet of claim 6 ,
Using a laser welding device configured to move the laser beam irradiation position along the support position where the sheet is supported by the linear regions of the linear region support member,
The first area on the upper surface of the sheet is covered with the heat-generating member, an arbitrary position of the second area on the lower surface of the sheet is supported by the linear area of the linear area support member, and the heat-generating member is pressed against the upper surface of the sheet by the pressing portion so as to be in close contact with the upper surface of the sheet.
The control unit irradiates the heat-generating member with a laser beam from the laser beam irradiation unit to generate heat, and transfers the heat generated by the heat-generating member toward the linear regions of the linear region support member to heat and weld the sheet,
A laser welding method for sheets, characterized in that the laser beam irradiation position is moved and the sheet is controlled to be welded in a certain range along the linear regions of the linear region support member.
請求項のシートのレーザ溶着装置に、レーザ光線照射部のレーザ光線照射位置を移動させるレーザ光線照射位置移動部を設け、
更に、加熱部を移動させる加熱位置移動部を設け、
前記レーザ光線照射位置と前記加熱部による加熱位置を、前記シートを前記線状領域支持部材の線状領域が支持している支持位置に沿って移動させるように構成したレーザ溶着装置を用いて、
前記シートの上面を前記第1の領域を前記発熱部材で覆い、前記シートの下面の前記第2の領域の任意の位置を前記線状領域支持部材の線状領域で支持し、前記押圧部で前記発熱部材を前記シートの上面に押圧して密着させた状態で、
前記制御部により、前記レーザ光線照射部から前記発熱部材にレーザ光線を照射して発熱させて前記発熱部材で生じた熱を前記線状領域支持部材の線状領域に向けて伝え、前記加熱部で前記線状領域支持部材の線状領域を発熱させて線状領域で生じた熱を前記シートへ伝え、前記シートを加熱して溶着するとともに、
前記レーザ光線照射位置と加熱部の加熱位置を移動させ、前記シートを前記線状領域支持部材の線状領域に沿った一定範囲を溶着する制御をするように構成した、ことを特徴とするシートのレーザ溶着方法。
The sheet laser welding apparatus according to claim 7 is provided with a laser beam irradiation position moving unit for moving the laser beam irradiation position of the laser beam irradiation unit,
Furthermore, a heating position moving unit for moving the heating unit is provided,
Using a laser welding device configured to move the laser beam irradiation position and the heating position by the heating unit along the support position where the sheet is supported by the linear regions of the linear region support member,
The first area of the upper surface of the sheet is covered with the heat-generating member, an arbitrary position of the second area of the lower surface of the sheet is supported by the linear area of the linear area support member, and the heat-generating member is pressed against the upper surface of the sheet by the pressing portion so as to be in close contact with the upper surface of the sheet.
The controller causes the heat-generating member to generate heat by irradiating the heat-generating member with a laser beam from the laser beam irradiation unit to transmit the heat generated by the heat-generating member toward the linear regions of the linear region support member, and the heating unit heats the linear region of the linear region support member and transmits the heat generated in the linear region to the sheet, thereby heating and welding the sheet.
A sheet laser welding method characterized in that the laser beam irradiation position and the heating position of the heating unit are moved, and the sheet is controlled to weld a certain range along the linear region of the linear region support member.
シートの下面を線状領域で支持する前記線状領域支持部材に代えて、シートの下面の前記第2の領域の任意の位置を点状領域で支持する点状領域支持部材を用いたレーザ溶着装置でレーザ溶着を行うようにしたことを特徴とする請求項6から9のいずれかに記載のシートのレーザ溶着方法。 10. The laser welding method for sheets according to any one of claims 6 to 9, wherein the laser welding is performed by a laser welding apparatus using a point-like area support member that supports an arbitrary position of the second area of the bottom surface of the sheet in a point-like area instead of the linear area support member that supports the lower surface of the sheet in a linear area. 請求項6から10のいずれかに記載のシートのレーザ溶着方法を用いて、芳香族ポリイミドシートを溶着するようにした、ことを特徴とするポリイミドシートのレーザ溶着方法。 A laser welding method for polyimide sheets, wherein the laser welding method for sheets according to any one of claims 6 to 10 is used to weld an aromatic polyimide sheet. 前記線状領域支持部材を柱体として、シートの下面を線状に接して支持する柱体の母線の近傍を前記線状領域支持部材の線状領域とした、ことを特徴とする請求項1から5のいずれかに記載のシートのレーザ溶着装置。 6. The laser welding apparatus for sheets according to claim 1, wherein the linear region supporting member is a columnar body, and the linear region of the linear region supporting member is in the vicinity of the generatrix of the columnar body that linearly contacts and supports the lower surface of the sheet. 前記発熱部材を平板とした、ことを特徴とする請求項1から5のいずれかに記載のシートのレーザ溶着装置。 6. The sheet laser welding apparatus according to claim 1, wherein said heat generating member is a flat plate. 前記加熱部として通電加熱部を用いたことを特徴とする請求項2または4に記載のシートのレーザ溶着装置。 5. The sheet laser welding apparatus according to claim 2, wherein an electric heating unit is used as the heating unit. 前記加熱部として熱線照射部を用いたことを特徴とする請求項2または4に記載のシートのレーザ溶着装置。 5. The sheet laser welding apparatus according to claim 2, wherein a heat ray irradiation unit is used as the heating unit. 前記加熱部として前記レーザ光線照射部とは別のレーザ光線照射部を用いたことを特徴とする請求項2または4に記載のシートのレーザ溶着装置。 5. The sheet laser welding apparatus according to claim 2, wherein a laser beam irradiation unit different from the laser beam irradiation unit is used as the heating unit. 更に、前記発熱部材の温度を測定する発熱温度測定部を設け、
当該発熱温度測定部からの発熱温度情報を前記制御部にフィードバックして、溶着動作を行うように構成したことを特徴とする請求項1から4のいずれかに記載のシートのレーザ溶着装置。
Furthermore, a heat generation temperature measuring unit for measuring the temperature of the heat generating member is provided,
5. The laser welding apparatus for sheets according to claim 1, wherein heat generation temperature information from said heat generation temperature measuring section is fed back to said control section to perform a welding operation.
更にシートの温度を測定するシート温度測定部を有し、
当該シート温度測定部からのシート温度情報を前記制御部にフィードバックして、溶着動作を行うように構成したことを特徴とする請求項1から4のいずれかに記載のシートのレーザ溶着装置。
Furthermore, it has a seat temperature measuring unit for measuring the temperature of the seat,
5. The laser welding apparatus for sheets according to claim 1, wherein sheet temperature information from said sheet temperature measuring section is fed back to said control section to perform a welding operation.
更に、前記線状領域支持部材の温度を測定する支持温度測定部を設け、
当該支持温度測定部からの支持温度情報を前記制御部にフィードバックして、溶着動作を行うように構成したことを特徴とする請求項2または4に記載のシートのレーザ溶着装置。
Furthermore, a support temperature measuring unit for measuring the temperature of the linear area support member is provided,
5. The sheet laser welding apparatus according to claim 2, wherein support temperature information from said support temperature measurement unit is fed back to said control unit to perform a welding operation.
前記発熱部材と線状領域支持部材の一方または両方の周囲を断熱部材で囲んだことを特徴とする請求項2または4に記載のシートのレーザ溶着装置。 5. The sheet laser welding apparatus according to claim 2, wherein one or both of the heat generating member and the linear region supporting member are surrounded by a heat insulating member. 袋型の溶着部分を形成することにより耐熱性密封袋を溶着する請求項3から5のいずれかに記載のシートのレーザ溶着装置。 6. The laser welding apparatus for sheets according to claim 3, wherein the heat-resistant sealed bag is welded by forming a bag-shaped welded portion. 請求項1から5及び12から21のいずれかに記載のシートのレーザ溶着装置を用いて、芳香族ポリイミドシートを溶着するようにした、ことを特徴とするポリイミドシートのレーザ溶着装置。
22. A laser welding apparatus for polyimide sheets, wherein the laser welding apparatus for sheets according to any one of claims 1 to 5 and 12 to 21 is used to weld an aromatic polyimide sheet.
JP2021566704A 2019-12-26 2019-12-26 Sheet Laser Welding Apparatus, Sheet Laser Welding Method, Sheet Laser Welded Structure, Polyimide Sheet Laser Welding Apparatus, Polyimide Sheet Laser Welding Method, Polyimide Sheet Laser Welded Structure Active JP7314451B2 (en)

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