JP2005104819A - Method and apparatus for cutting laminated glass - Google Patents

Method and apparatus for cutting laminated glass Download PDF

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JP2005104819A
JP2005104819A JP2004028370A JP2004028370A JP2005104819A JP 2005104819 A JP2005104819 A JP 2005104819A JP 2004028370 A JP2004028370 A JP 2004028370A JP 2004028370 A JP2004028370 A JP 2004028370A JP 2005104819 A JP2005104819 A JP 2005104819A
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laminated glass
cutting
wavelength region
glass
laser
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Masaaki Furusawa
正明 古沢
Satoshi Jibiki
聡 地引
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Nippon Sheet Glass Co Ltd
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Nippon Sheet Glass Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/1099—After-treatment of the layered product, e.g. cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for cutting laminated glass which enable the laminated glass to efficiently be cut into a prescribed size. <P>SOLUTION: In the cutting method, the laminated glass 10 is set on the glass cutting apparatus 20 and a YAG laser oscillation unit for irradiating an intermediate film comprising film-like polyvinyl butylal (PVB) with laser beam having 1,064 nm wave length (λ) and 15 J/cm<SP>2</SP>energy density is moved in the X direction or the Y direction (biaxial direction) at a speed of 300 mm/sec until the temperature of the intermediate film reaches equal to or above the vaporization temperature and a wheel cutter is moved at the same speed in the same direction as that of the YAG laser oscillation unit to press the outside surface of the glass. In this stage, a vertical crack is produced on the outside surface of the glass and then the laminated glass 10 is broken manually to be cut. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、合せガラスの切断方法及び合せガラス切断装置に関する。   The present invention relates to a method for cutting laminated glass and a laminated glass cutting apparatus.

従来、互いに対向する一対の板ガラス１１，１２と、板ガラス１１，１２間に介装された中間膜１５とを備える合せガラス１０（図１）は合せガラス切断機により以下のように切断される。即ち、図１２のフローチャートに示すように、合せガラス切断機の一対の吸盤により合せガラス１０を水平に固定し（ステップＳ１２０１）、板ガラス１１，１２の各外側面１３，１４に一対の吸盤間で切れ目（垂直クラック）を入れるべく（ガラススクライビング）、ホイールカッターを外側面１３，１４上に所定の押圧力で押圧し（ステップＳ１２０２）、合せガラス１０を板ガラス１２側からと板ガラス１１側から順に人手により押圧すること（機械的な曲げ応力）により外側面１３，１４に発生した垂直クラックを伸展させて板ガラス１１，１２を夫々分割し（ステップＳ１２０３）、次いで切断部における中間膜１５が軟らかくなるまで合せガラス１０を板ガラス１２側から赤外線ヒータ等の加熱器によって加熱し（ステップＳ１２０４）、さらに、一対の吸盤の間隔を広げることにより加熱された中間膜１５を水平方向（図１３におけるＸ方向）に延伸した状態で（ステップＳ１２０５）、外側面１３，１４における切れ目に沿って中間膜１５を人手によりカッターで切断する（ステップＳ１２０６）（例えば、特許文献１）。   Conventionally, a laminated glass 10 (FIG. 1) including a pair of plate glasses 11 and 12 facing each other and an intermediate film 15 interposed between the plate glasses 11 and 12 is cut as follows by a laminated glass cutting machine. That is, as shown in the flowchart of FIG. 12, the laminated glass 10 is horizontally fixed by a pair of suction cups of a laminated glass cutting machine (step S1201), and the outer side surfaces 13 and 14 of the plate glasses 11 and 12 are placed between the pair of suction cups. In order to make a cut (vertical crack) (glass scribing), the wheel cutter is pressed onto the outer surfaces 13 and 14 with a predetermined pressing force (step S1202), and the laminated glass 10 is manually manned from the plate glass 12 side and the plate glass 11 side in order. By pressing (mechanical bending stress), the vertical cracks generated on the outer surfaces 13 and 14 are extended to divide the glass plates 11 and 12 respectively (step S1203), and then the intermediate film 15 in the cut portion is softened. The laminated glass 10 is heated from the plate glass 12 side by a heater such as an infrared heater (step S1). 04) Further, the intermediate film 15 heated by widening the distance between the pair of suction cups is stretched in the horizontal direction (X direction in FIG. 13) (step S1205), and along the cuts in the outer side surfaces 13 and 14. The intermediate film 15 is manually cut with a cutter (step S1206) (for example, Patent Document 1).

上述した合せガラスの切断方法（ステップＳ１２０１〜ステップＳ１２０６）により、例えば、図１３に示すような切断パターンで合せガラス１０を切断して所望の大きさの合せガラスｌ，ｍ，ｎを得ようとする場合、合せガラス１０に切れ目ａを入れて、合せガラス１０をｂ部とｃ部とに切断し、ｂ部を９０°回転し、切れ目ｄ，ｅ（切断方向はＹ方向）を入れて、ｂ部をｆ部，ｇ部，ｈ部に切断し、ｆ部，ｇ部，ｈ部を夫々９０°回転し、切れ目ｉ，ｊ，ｋ（切断方向はＹ方向）を入れる。   By the above-described method for cutting laminated glass (steps S1201 to S1206), for example, the laminated glass 10 is cut with a cutting pattern as shown in FIG. 13 to obtain laminated glass l, m, n having a desired size. When doing, put the cut a in the laminated glass 10, cut the laminated glass 10 into b part and c part, rotate b part 90 degrees, put the cut d, e (cutting direction is Y direction), The b part is cut into f part, g part, and h part, and the f part, g part, and h part are rotated by 90 °, respectively, and cuts i, j, and k (the cutting direction is the Y direction) are made.

また、板ガラスをレーザにより切断するガラスレーザ切断が既に公知となっている（例えば、特許文献２及び３）。
特開平７−６９６６３号公報 特表平８−５０９９４７号公報 特開平９−１２３２７号公報 Moreover, the glass laser cutting which cut | disconnects plate glass with a laser is already well-known (for example, patent document 2 and 3).
JP 7-69663 A Japanese National Patent Publication No. 8-509947 JP-A-9-12327

しかしながら、従来の合せガラスの切断方法では、工程（ステップＳ１２０１〜ステップＳ１２０６）が多く切断効率が悪いと共に、中間膜１５をＸ方向に延伸する必要があるので、合せガラス１０をＹ方向（一軸）でしか切断することができず、例えば図１３においては端板ｏ，ｐ，ｑが残り、切断歩留りが悪いという問題があった。さらに、従来の合せガラスの切断方法では、切断した合せガラス１０を回転する必要があると共に、中間膜１５が軟らかくなるまで合せガラス１０を加熱する必要があるので、合せガラス１０の切断に長い時間を要し、切断効率が悪いという問題があった。   However, in the conventional method for cutting laminated glass, there are many steps (steps S1201 to S1206), the cutting efficiency is poor, and the intermediate film 15 needs to be stretched in the X direction. Therefore, the laminated glass 10 is moved in the Y direction (uniaxial). For example, in FIG. 13, there is a problem that the end plates o, p, q remain and the cutting yield is poor. Furthermore, in the conventional method for cutting laminated glass, it is necessary to rotate the cut laminated glass 10 and to heat the laminated glass 10 until the intermediate film 15 becomes soft. There was a problem that cutting efficiency was bad.

加えて、従来の合せガラスの切断方法では、ガラス切断面におけるクラックの存在、貼り合わされた状態での分割（ステップＳ１２０３）、中間膜の加熱（ステップＳ１２０４）、中間膜の伸展（ステップＳ１２０５）により、合せガラスの切断面の品質が低下するという問題があった。   In addition, in the conventional method for cutting laminated glass, the presence of cracks in the glass cut surface, division in the bonded state (step S1203), heating of the intermediate film (step S1204), and extension of the intermediate film (step S1205) There was a problem that the quality of the cut surface of the laminated glass was lowered.

本発明の目的は、効率良く所定の大きさに切断することができる合せガラスの切断方法及び合せガラス切断装置を提供することにある。   An object of the present invention is to provide a laminated glass cutting method and a laminated glass cutting apparatus that can efficiently cut into a predetermined size.

上述の目的を達成するために、請求項１記載の合せガラスの切断方法は、互いに対向する一対の板ガラスと、前記一対の板ガラスの間に介装された中間膜とを備える合せガラスの切断方法において、前記中間膜が蒸発温度以上になるまで前記中間膜に所定波長領域のレーザ光を照射するレーザ照射ステップと、前記板ガラスの外側面に切れ目を入れるべくカッターを前記板ガラスの外側面上に所定の押圧力で押圧する押圧ステップとを備えることを特徴とする。   In order to achieve the above-mentioned object, the method for cutting laminated glass according to claim 1 is a method for cutting laminated glass comprising a pair of plate glasses facing each other and an intermediate film interposed between the pair of plate glasses. A laser irradiation step of irradiating the intermediate film with laser light in a predetermined wavelength region until the intermediate film reaches an evaporation temperature or higher, and a cutter is provided on the outer surface of the plate glass so as to make a cut in the outer surface of the plate glass. And a pressing step of pressing with the pressing force.

請求項２記載の合せガラスの切断方法は、請求項１記載の合せガラスの切断方法におい
て、前記レーザ照射ステップと前記押圧ステップはほぼ同時に行われることを特徴とする。 The method for cutting laminated glass according to claim 2 is characterized in that in the method for cutting laminated glass according to claim 1, the laser irradiation step and the pressing step are performed substantially simultaneously.

請求項３記載の合せガラスの切断方法は、請求項１又は２記載の合せガラスの切断方法において、前記板ガラスが所定温度になるまで前記板ガラスに他の所定波長領域のレーザ光を照射する他のレーザ照射ステップとをさらに備えることを特徴とする。   The method for cutting laminated glass according to claim 3 is the method for cutting laminated glass according to claim 1 or 2, wherein the plate glass is irradiated with laser light in another predetermined wavelength region until the plate glass reaches a predetermined temperature. And a laser irradiation step.

請求項４記載の合せガラスの切断方法は、請求項３記載の合せガラスの切断方法において、前記所定温度は前記板ガラスの軟化点以下であることを特徴とする。   The method for cutting laminated glass according to claim 4 is the method for cutting laminated glass according to claim 3, wherein the predetermined temperature is equal to or lower than a softening point of the plate glass.

請求項５記載の合せガラスの切断方法は、請求項１乃至４のいずれか１項に記載の合せガラスの切断方法において、前記レーザ照射ステップと前記他のレーザ照射ステップはほぼ同時に行われることを特徴とする。   The method for cutting laminated glass according to claim 5 is the method for cutting laminated glass according to any one of claims 1 to 4, wherein the laser irradiation step and the other laser irradiation step are performed substantially simultaneously. Features.

請求項６記載の合せガラスの切断方法は、請求項１乃至５のいずれか１項に記載の合せガラスの切断方法において、前記所定波長領域は紫外線波長領域であることを特徴とする。   The method for cutting laminated glass according to claim 6 is the method for cutting laminated glass according to any one of claims 1 to 5, wherein the predetermined wavelength region is an ultraviolet wavelength region.

請求項７記載の合せガラスの切断方法は、請求項６記載の合せガラスの切断方法において、前記紫外線波長領域は３１０〜４１０ｎｍであることを特徴とする。   The method for cutting laminated glass according to claim 7 is the method for cutting laminated glass according to claim 6, wherein the ultraviolet wavelength region is 310 to 410 nm.

請求項８記載の合せガラスの切断方法は、請求項３乃至７のいずれか１項に記載の合せガラスの切断方法において、前記他の所定波長領域は赤外線波長領域であることを特徴とする。   The method for cutting laminated glass according to claim 8 is the method for cutting laminated glass according to any one of claims 3 to 7, wherein the other predetermined wavelength region is an infrared wavelength region.

請求項９記載の合せガラスの切断方法は、請求項８記載の合せガラスの切断方法において、前記赤外線波長領域は１０００〜１０６００ｎｍであることを特徴とする。   The method for cutting laminated glass according to claim 9 is the method for cutting laminated glass according to claim 8, wherein the infrared wavelength region is 1000 to 10600 nm.

請求項１０記載の合せガラスの切断方法は、請求項６乃至９のいずれか１項に記載の合せガラスの切断方法において、前記紫外線波長領域のレーザ光のエネルギ密度は、５〜２５Ｊ／ｃｍ２であることを特徴とする。 The laminated glass cutting method according to claim 10 is the laminated glass cutting method according to any one of claims 6 to 9, wherein the energy density of the laser light in the ultraviolet wavelength region is 5 to 25 J / cm 2. It is characterized by being.

請求項１１記載の合せガラスの切断方法は、請求項８乃至１０のいずれか１項に記載の合せガラスの切断方法において、前記赤外線波長領域のレーザ光のエネルギ密度は、 ３００〜２０００Ｗ／ｃｍ２であることを特徴とする。 The method for cutting laminated glass according to claim 11 is the method for cutting laminated glass according to any one of claims 8 to 10, wherein the energy density of the laser light in the infrared wavelength region is 300 to 2000 W / cm 2. It is characterized by being.

請求項１２記載の合せガラス切断装置は、互いに対向する一対の板ガラスと、前記一対の板ガラスの間に介装された中間膜とを備える合せガラスを切断する合せガラス切断装置において、前記中間膜に所定波長領域のレーザ光を切断線上に沿って照射するレーザ照射手段と、前記板ガラスの外側面に前記切断線上に沿って切れ目を入れる切れ目形成手段とを備えることを特徴とする。   The laminated glass cutting device according to claim 12, wherein the laminated glass cutting device cuts a laminated glass comprising a pair of plate glasses opposed to each other and an intermediate film interposed between the pair of plate glasses. Laser irradiation means for irradiating laser light of a predetermined wavelength region along a cutting line, and a cut forming means for making a cut along the cutting line on the outer surface of the plate glass.

請求項１３記載の合せガラス切断装置は、請求項１２記載の合せガラス切断装置において、前記レーザ照射手段及び前記切れ目形成手段は同時に作動して、前記レーザ光の照射及び前記切れ目の形成を連続して行うことを特徴とする。   The laminated glass cutting device according to claim 13 is the laminated glass cutting device according to claim 12, wherein the laser irradiation means and the cut forming means operate simultaneously to continuously perform the irradiation of the laser light and the formation of the cut. It is characterized by performing.

請求項１４記載の合せガラス切断装置は、請求項１２又は１３記載の合せガラス切断装置において、前記レーザ照射手段は、前記中間膜との距離を焦点距離とするレンズを有することを特徴とする。   A laminated glass cutting apparatus according to a fourteenth aspect is the laminated glass cutting apparatus according to the twelfth or thirteenth aspect, characterized in that the laser irradiation means includes a lens whose focal distance is the distance from the intermediate film.

請求項１５記載の合せガラス切断装置は、請求項１２乃至１４のいずれか1項に記載の合せガラス切断装置において、前記板ガラスの外側面における前記切断線上に沿った切れ目に他の所定波長領域のレーザ光を照射する他のレーザ照射手段とを備えることを特徴とする。   The laminated glass cutting device according to claim 15 is the laminated glass cutting device according to any one of claims 12 to 14, wherein the other predetermined wavelength region is cut along the cutting line on the outer surface of the plate glass. And other laser irradiation means for irradiating the laser beam.

請求項１６記載の合せガラス切断装置は、請求項１５記載の合せガラス切断装置において、前記他のレーザ照射手段は、前記板ガラスの表面に前記他の所定波長領域のレーザ光を照射するための他のレンズを有することを特徴とする。   The laminated glass cutting device according to claim 16 is the laminated glass cutting device according to claim 15, wherein the other laser irradiating means irradiates the surface of the plate glass with laser light of the other predetermined wavelength region. It has the lens of this.

請求項１７記載の合せガラス切断装置は、請求項１５又は１６記載の合せガラス切断装置において、前記所定波長領域のレーザ光と前記他の所定波長領域のレーザ光を前記合せガラスに対して走査する走査手段をさらに備えることを特徴とする。   The laminated glass cutting device according to claim 17 is the laminated glass cutting device according to claim 15 or 16, wherein the laminated glass is scanned with the laser light of the predetermined wavelength region and the laser light of the other predetermined wavelength region. It further comprises scanning means.

請求項１８記載の合せガラス切断装置は、請求項１５乃至１７のいずれか１項に記載の合せガラス切断装置において、前記レーザ照射手段及び前記他のレーザ照射手段手段は同時に作動して、前記中間膜へのレーザ光の照射及び前記切れ目へのレーザ光の照射を連続して行うことを特徴とする。   The laminated glass cutting device according to claim 18 is the laminated glass cutting device according to any one of claims 15 to 17, wherein the laser irradiation means and the other laser irradiation means are operated simultaneously, and Irradiation of the laser beam onto the film and irradiation of the laser beam onto the cut are continuously performed.

以上詳細に説明したように、請求項１記載の合せガラスの切断方法によれば、中間膜が蒸発温度以上になるまで中間膜に所定波長領域のレーザ光を照射するので、中間膜を延伸しないで中間膜を切断することができ、もって合せガラスを２軸切りによって、効率良く所定の大きさに切断することができる。   As described above in detail, according to the method for cutting laminated glass according to claim 1, the intermediate film is irradiated with laser light in a predetermined wavelength region until the intermediate film reaches the evaporation temperature or higher, so the intermediate film is not stretched. Thus, the intermediate film can be cut, and the laminated glass can be efficiently cut into a predetermined size by biaxial cutting.

請求項２記載の合せガラスの切断方法によれば、レーザ照射ステップと押圧ステップはほぼ同時に行われるので、切断時間を短くすることができる。   According to the method for cutting laminated glass according to claim 2, the laser irradiation step and the pressing step are performed almost simultaneously, so that the cutting time can be shortened.

請求項３記載の合せガラスの切断方法によれば、板ガラスが他の所定温度になるまで板ガラスに他の所定波長領域のレーザ光を照射するので、熱応力切断によりガラスを切断することができ、もって圧縮破壊層やクラックのない良好な切断面を得ることができる。   According to the method for cutting laminated glass according to claim 3, since the plate glass is irradiated with laser light of another predetermined wavelength region until the plate glass reaches another predetermined temperature, the glass can be cut by thermal stress cutting. Therefore, a good cut surface free from a compression fracture layer and cracks can be obtained.

請求項４記載の合せガラスの切断方法によれば、所定温度が板ガラスの軟化点以下であるので、板ガラスが軟化するのを防止することができる。   According to the method for cutting laminated glass according to claim 4, since the predetermined temperature is equal to or lower than the softening point of the plate glass, the plate glass can be prevented from being softened.

請求項５記載の合せガラスの切断方法によれば、レーザ照射ステップと他のレーザ照射ステップはほぼ同時に行われるので、切断時間を短くすることができる。   According to the method for cutting laminated glass according to claim 5, since the laser irradiation step and the other laser irradiation steps are performed almost simultaneously, the cutting time can be shortened.

請求項７記載の合せガラスの切断方法によれば、紫外線波長領域は３１０〜４１０ｎｍであるので、中間膜のレーザ光吸収率をガラスのレーザ光吸収率よりも大きくすることができる。   According to the method for cutting laminated glass according to the seventh aspect, since the ultraviolet wavelength region is 310 to 410 nm, the laser light absorption rate of the intermediate film can be made larger than the laser light absorption rate of the glass.

請求項９記載の合せガラスの切断方法によれば、赤外線波長領域は１０００〜１０６００ｎｍであるので、ガラスのレーザ光吸収率を大きくすることができると共に、発振効率向上及び低コストを実現することができる。   According to the method for cutting a laminated glass according to claim 9, since the infrared wavelength region is 1000 to 10600 nm, the laser light absorption rate of the glass can be increased, and the oscillation efficiency can be improved and the cost can be reduced. it can.

請求項１０記載の合せガラスの切断方法によれば、所定波長領域のレーザ光のエネルギ密度は、５〜２５Ｊ／ｃｍ２であるので、ガラス表面にダメージを与えることなく、中間膜をより効率よく蒸発温度以上に加熱することができ、もって切断時間をさらに確実に短くすることができる。 According to the method for cutting laminated glass according to claim 10, since the energy density of the laser beam in the predetermined wavelength region is 5 to 25 J / cm 2 , the intermediate film can be more efficiently formed without damaging the glass surface. It can heat up more than evaporation temperature, and can shorten cutting time still more reliably.

請求項１１記載の合せガラスの切断方法によれば、他の所定波長領域のレーザ光のエネルギ密度は、３００〜２０００Ｗ／ｃｍ２であるので、ガラスを所定温度以下に加熱でき、熱応力をより効率よく発生させることにより、ガラス切断を確実に短時間で行うことができる。 According to the method for cutting laminated glass according to claim 11, since the energy density of the laser light in the other predetermined wavelength region is 300 to 2000 W / cm 2 , the glass can be heated to a predetermined temperature or less, and the thermal stress is further increased. By efficiently generating the glass, the glass can be reliably cut in a short time.

請求項１２記載の合せガラス切断装置によれば、中間膜に所定波長領域のレーザ光を切断線上に沿って照射して、板ガラスの外側面に切断線上に沿って切れ目を入れるので、合せガラスを精度良く切断することができる。   According to the laminated glass cutting device of claim 12, the intermediate film is irradiated with laser light of a predetermined wavelength region along the cutting line, and a cut is made along the cutting line on the outer surface of the plate glass. It can be cut with high accuracy.

請求項１３記載の合せガラス切断装置によれば、レーザ照射手段及び切れ目形成手段は同時に作動して、レーザ光の照射及び切れ目の形成を連続して行うので、切断時間を短くすることができる。   According to the laminated glass cutting apparatus of the thirteenth aspect, the laser irradiation means and the cut forming means operate simultaneously to continuously perform the laser light irradiation and the cut formation, so that the cutting time can be shortened.

請求項１４記載の合せガラス切断装置によれば、レーザ照射手段は、中間膜との距離を焦点距離とするレンズを有するので、ガラスの表面におけるレーザ光のエネルギー密度を中間膜におけるレーザ光のエネルギー密度よりも小さくすることができ、もってガラス表面にダメージを与えることを防止することができる。   According to the laminated glass cutting device of claim 14, since the laser irradiation means has a lens whose focal length is the distance from the intermediate film, the energy density of the laser light on the glass surface is set to the energy of the laser light in the intermediate film. The density can be made smaller than the density, thereby preventing the glass surface from being damaged.

請求項１５記載の合せガラス切断装置によれば、板ガラスの外側面における切断線上に沿った切れ目に他の所定波長領域のレーザ光を照射するので、熱応力切断によりガラスを切断することができ、もって圧縮破壊層やクラックのない良好な切断面を得ることができる。   According to the laminated glass cutting device of claim 15, since the laser beam in the other predetermined wavelength region is irradiated to the cut along the cutting line on the outer surface of the plate glass, the glass can be cut by thermal stress cutting, Therefore, a good cut surface free from a compression fracture layer and cracks can be obtained.

請求項１６記載の合せガラス切断装置によれば、他のレーザ照射手段は、板ガラスの表面に他の所定波長領域のレーザ光を照射するための他のレンズを有するので、中間膜におけるレーザ光のエネルギー密度をガラスの表面におけるレーザ光のエネルギー密度よりも小さくすることができ、もって中間膜にダメージを与えることを防止することができる。   According to the laminated glass cutting device of the sixteenth aspect, since the other laser irradiation means has the other lens for irradiating the surface of the plate glass with the laser beam of another predetermined wavelength region, The energy density can be made smaller than the energy density of the laser beam on the surface of the glass, so that the intermediate film can be prevented from being damaged.

請求項１７記載の合せガラス切断装置によれば、所定波長領域のレーザ光と他の所定波長領域のレーザ光を合せガラスに対して走査する走査手段をさらに備えるので、確実にレーザ光を切断線上に沿って照射することができる。   According to the laminated glass cutting device of the seventeenth aspect of the present invention, the laminated glass cutting device further includes scanning means for scanning the laminated glass with the laser light of the predetermined wavelength region and the laser light of the other predetermined wavelength region. It can irradiate along.

請求項１８記載の合せガラス切断装置によれば、レーザ照射手段及び他のレーザ照射手段手段は同時に作動して、中間膜へのレーザ光の照射及び切れ目へのレーザ光の照射を連続して行うので、切断時間を短くすることができる。   According to the laminated glass cutting device of claim 18, the laser irradiation means and the other laser irradiation means are operated simultaneously to continuously irradiate the intermediate film with the laser beam and irradiate the cut with the laser beam. Therefore, the cutting time can be shortened.

以下、本発明の実施の形態を図面を参照しながら詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１は、本発明の第１及び第２の実施の形態に係る合せガラスの切断方法によって切断すべき合せガラスを示す図である。   FIG. 1 is a view showing a laminated glass to be cut by the laminated glass cutting method according to the first and second embodiments of the present invention.

図１において、合せガラス１０は、互いに対向する一対の板ガラス１１，１２と、一対の板ガラス１１，１２の間に介装された中間膜１５とから成る。   In FIG. 1, a laminated glass 10 includes a pair of plate glasses 11 and 12 facing each other and an intermediate film 15 interposed between the pair of plate glasses 11 and 12.

板ガラス１１，１２は厚さが３ｍｍのフロート板ガラスで構成されており、中間膜１５は厚さが１ｍｍのフィルム状ＰＶＢ（ポリビニルブチラル）で構成されている。   The plate glasses 11 and 12 are made of a float plate glass having a thickness of 3 mm, and the intermediate film 15 is made of a film-like PVB (polyvinyl butyral) having a thickness of 1 mm.

図２は、本発明の第１の実施の形態に係る合せガラスの切断方法を実行する合せガラス切断装置の正面図であり、図３は図２の合せガラス切断装置の平面図である。   FIG. 2 is a front view of a laminated glass cutting device that executes the method for cutting laminated glass according to the first embodiment of the present invention, and FIG. 3 is a plan view of the laminated glass cutting device of FIG.

図２及び図３において、合せガラス切断装置２０は、合せガラス１０を水平に載置する一対の合せガラス載置部材２１と、水平に保持された合せガラス１０を介して対向するように配置された２つの合せガラス切断部Ａを備える。   2 and 3, the laminated glass cutting device 20 is disposed so as to face a pair of laminated glass placing members 21 for placing the laminated glass 10 horizontally through the laminated glass 10 held horizontally. Two laminated glass cutting portions A are provided.

これらの合せガラス切断部Ａは、Ｘ方向に配列された一対のねじ２２と、一対のねじ２２に夫々螺合する一対のボールねじナット２３と、一対のボールねじナット２３を両端で回転自在に保持するブリッジフレーム２４と、ブリッジフレーム２４の両端に夫々取付けられ、一対のボールねじナット２３を同期してベルト駆動する一対のモータ２５とを備える。   These laminated glass cutting parts A have a pair of screws 22 arranged in the X direction, a pair of ball screw nuts 23 respectively screwed to the pair of screws 22, and a pair of ball screw nuts 23 that are rotatable at both ends. A bridge frame 24 to be held and a pair of motors 25 attached to both ends of the bridge frame 24 and driving the belt in synchronization with the pair of ball screw nuts 23 are provided.

合せガラス切断部Ａは、また、ブリッジフレーム２４の上にＹ方向に配列されたねじ２６と、このねじ２６に螺合するボールねじナット２７と、ボールねじナット２７を回転自在に保持するカッターヘッド２８と、カッターヘッド２８よりもガラス切断時における位置が先行するようにカッターヘッド２８の周辺に取付けられたレーザ照射部としてのＹＡＧレーザ発振装置５０と、カッターヘッド２８及びＹＡＧレーザ発振装置５０を鉛直軸の周りに旋回自在に保持するカッターヘッド保持機構３１と、カッターヘッド２８に取付けられ、ボールねじナット２７をベルト駆動するモータ２９とを備える。   The laminated glass cutting part A also includes a screw 26 arranged in the Y direction on the bridge frame 24, a ball screw nut 27 screwed into the screw 26, and a cutter head that rotatably holds the ball screw nut 27. 28, a YAG laser oscillation device 50 as a laser irradiating unit attached to the periphery of the cutter head 28 so that the position at the time of glass cutting precedes the cutter head 28, and the cutter head 28 and the YAG laser oscillation device 50 are vertically arranged. A cutter head holding mechanism 31 that holds the shaft rotatably is provided, and a motor 29 that is attached to the cutter head 28 and drives the ball screw nut 27 as a belt.

カッターヘッド２８は、図４に示すように、合せガラス１０に切れ目を入れる砥石製のホイールカッター４０（図５）（切れ目形成手段）と、ホイールカッター４０を合せガラス１０の外側面１３，１４に所定の押圧力で押圧する空気圧シリンダ装置４１と、ホイールカッター４０を動力伝達機構４３を介して回転駆動するホイールカッター電動モータ４２とを有する。   As shown in FIG. 4, the cutter head 28 includes a wheel cutter 40 (FIG. 5) (cut forming means) made of a grindstone for making a cut in the laminated glass 10, and the wheel cutter 40 on the outer surfaces 13 and 14 of the laminated glass 10. A pneumatic cylinder device 41 that presses with a predetermined pressing force and a wheel cutter electric motor 42 that rotates the wheel cutter 40 via a power transmission mechanism 43 are provided.

合せガラス切断部Ａは、さらに、一対のモータ２５、モータ２９、空気圧シリンダ装置４１、カッターヘッド保持機構３１、及びホイールカッター電動モータ４２に夫々接続され、予め記憶したプログラムにより一対のモータ２５、モータ２９、空気圧シリンダ装置４１、カッターヘッド保持機構３１、及びホイールカッター電動モータ４２を夫々作動制御する制御装置３０を備える。   The laminated glass cutting part A is further connected to a pair of motors 25, a motor 29, a pneumatic cylinder device 41, a cutter head holding mechanism 31, and a wheel cutter electric motor 42, respectively. 29, a pneumatic cylinder device 41, a cutter head holding mechanism 31, and a control device 30 for controlling the operation of the wheel cutter electric motor 42, respectively.

上記合せガラス切断装置２０は、以下のように作動する。   The laminated glass cutting device 20 operates as follows.

制御装置３０の制御により一対のモータ２５が同期して作動することによって一対のボールねじナット２３は同期して回転して、ブリッジフレーム２４の両端は同じく同期してＸ方向に移動し、同時に、制御装置３０の制御によりモータ２９が作動することによりボールねじナット２７が回転して、カッターヘッド２８はＹ方向に移動する。また、制御装置３０の制御によりホイールカッター電動モータ４２が作動してホイールカッター４０を回転駆動する。切れ目１を付すべき部位にカッターヘッド２８が移動すると、制御装置３０は空気圧シリンダ装置４１を作動させてホイールカッター４０を下降させ合せガラス１０の外側面１３，１４に所定の押圧力で押圧する。これにより、合せガラス１０の外側面１３，１４には切れ目１を付すべき形状に沿って切れ目が入る。   The pair of motors 25 are operated synchronously under the control of the control device 30, whereby the pair of ball screw nuts 23 are rotated synchronously, and both ends of the bridge frame 24 are also moved in the X direction synchronously, The ball screw nut 27 is rotated by the operation of the motor 29 under the control of the control device 30, and the cutter head 28 moves in the Y direction. Further, the wheel cutter electric motor 42 is operated by the control of the control device 30 to drive the wheel cutter 40 to rotate. When the cutter head 28 moves to the site where the cut 1 is to be made, the control device 30 operates the pneumatic cylinder device 41 to lower the wheel cutter 40 and press it against the outer surfaces 13 and 14 of the laminated glass 10 with a predetermined pressing force. As a result, the outer surfaces 13 and 14 of the laminated glass 10 are cut along the shape to be cut.

以下、本発明の第１の実施の形態に係る合せガラスの切断方法を説明する。   Hereinafter, the cutting method of the laminated glass which concerns on the 1st Embodiment of this invention is demonstrated.

図６は、本発明の第１の実施の形態に係る合せガラスの切断方法を示すフローチャートである。   FIG. 6 is a flowchart showing a method for cutting laminated glass according to the first embodiment of the present invention.

図６において、まず、合せガラス１０を合せガラス切断装置２０にセットし（ステップＳ６０１）、フィルム状ＰＶＢ（ポリビニルブチラル）で構成された中間膜１５の蒸発温度以上になるまで、中間膜１５に波長（λ）が３５５ｎｍ、エネルギ密度が１５Ｊ／ｃｍ２、出力１６Ｗ、パルスエネルギ４００μＪ／パルス、パルス幅１２ｎｓ、繰り返しパルプ数４０ｋＨｚのレーザ光を照射するＹＡＧレーザ発振装置５０をＸ方向又はＹ方向（２軸方向）に速度３００ｍｍ／secで移動させ（ステップＳ６０２）、ホイールカッター４０が外側面１３，１４を押圧するようにＹＡＧレーザ発振装置５０と同方向、同速度速度３００ｍｍ／secで移動させる（ステップＳ６０３）。ステップＳ６０３において、外側面１３，１４に垂直クラックが発生する。その後、人手で合せガラス１０を割り、合せガラス１０を切断する。 In FIG. 6, first, the laminated glass 10 is set in the laminated glass cutting device 20 (step S601). A YAG laser oscillation device 50 that irradiates a laser beam having a wavelength (λ) of 355 nm, an energy density of 15 J / cm 2 , an output of 16 W, a pulse energy of 400 μJ / pulse, a pulse width of 12 ns, and a repetition pulp number of 40 kHz is set in the X direction or the Y direction ( It is moved at a speed of 300 mm / sec (biaxial direction) (step S602), and is moved at the same speed and speed of 300 mm / sec as the YAG laser oscillation device 50 so that the wheel cutter 40 presses the outer surfaces 13 and 14 ( Step S603). In step S <b> 603, vertical cracks are generated on the outer surfaces 13 and 14. Thereafter, the laminated glass 10 is manually split and the laminated glass 10 is cut.

本第１の実施の形態によれば、中間膜１５が蒸発温度以上になるまで中間膜１５にレーザ光を照射するので、中間膜１５を延伸しないで中間膜１５を切断することができ、もって合せガラス１０を２軸（Ｘ方向、Ｙ方向）切りによって、従来約７０％（図１３）であった切断歩留りを約８５％（図７）にすることができる。   According to the first embodiment, since the intermediate film 15 is irradiated with the laser beam until the intermediate film 15 reaches the evaporation temperature or higher, the intermediate film 15 can be cut without stretching the intermediate film 15. By cutting the laminated glass 10 biaxially (X direction, Y direction), the cutting yield, which was conventionally about 70% (FIG. 13), can be reduced to about 85% (FIG. 7).

本第１の実施の形態では、レーザ照射ステップと押圧ステップをほぼ同時に行っているが、これに限定されるものではなく、レーザ照射ステップ後に押圧ステップを行ってもよく、又は、押圧ステップ後にレーザ照射ステップを行ってもよい。   In the first embodiment, the laser irradiation step and the pressing step are performed almost simultaneously. However, the present invention is not limited to this, and the pressing step may be performed after the laser irradiation step, or the laser is performed after the pressing step. An irradiation step may be performed.

本第１の実施の形態では、ホイールカッター４０をガラス面上１３，１４に押圧しているが、ホイールカッター４０に限定されるものではなく、ガラス面１３，１４に切れ目１を入れることができるものであれば、何であってもよい。   In this 1st Embodiment, although the wheel cutter 40 is pressed on the glass surfaces 13 and 14, it is not limited to the wheel cutter 40, The cut | interruption 1 can be made into the glass surfaces 13 and 14. FIG. Anything can be used.

本第１の実施の形態では、ホイールカッター４０をＹＡＧレーザ発振装置５０と同速度で走らせているが、これに限定されるものではない。   In the first embodiment, the wheel cutter 40 is run at the same speed as the YAG laser oscillation device 50, but the present invention is not limited to this.

本第１の実施の形態では、板ガラス１１，１２は厚さが３ｍｍであるが、これに限定されるものではなく、他の厚さ、例えば２〜１９ｍｍの板ガラスであってもよい。   In the first embodiment, the plate glasses 11 and 12 have a thickness of 3 mm. However, the thickness is not limited to this, and may be a plate glass having another thickness, for example, 2 to 19 mm.

本第１の実施の形態では、板ガラス１１，１２はフロート板ガラスで構成されているが、これに限定されるものではなく、例えば、型板ガラス、表面処理により光を拡散させる機能を付与したすりガラス、又は、強化ガラスや、熱線吸収・紫外線吸収・熱線反射等の機能を付与した板ガラスや、それらとの組み合わせであってもよい。   In the first embodiment, the plate glasses 11 and 12 are made of float plate glass, but are not limited thereto, for example, template glass, frosted glass imparted with a function of diffusing light by surface treatment, Alternatively, tempered glass, plate glass provided with functions such as heat ray absorption, ultraviolet ray absorption, and heat ray reflection, or a combination thereof may be used.

また、板ガラス１１，１２の組成については、ソーダ珪酸ガラス（ソーダ石灰シリカガラス）や、ホウ珪酸ガラスや、アルミノ珪酸ガラスや、各種結晶化ガラスであってもよい。   Moreover, about the composition of plate glass 11 and 12, soda silicate glass (soda lime silica glass), borosilicate glass, aluminosilicate glass, and various crystallized glass may be sufficient.

本第１の実施の形態では、中間膜１５は厚さが１ｍｍのフィルム状ＰＶＢ（ポリビニルブチラル）で構成されているが、これに限定されるものではなく、他の厚さ、例えば０．３８〜２．２９ｍｍの中間膜１５であってもよく、また、中間膜１５を板ガラス１１，１２に接着することができるのであれば、形状、及び材料は何であってもよい。   In the first embodiment, the intermediate film 15 is made of film-like PVB (polyvinyl butyral) having a thickness of 1 mm. However, the present invention is not limited to this, and other thicknesses, for example, 0. The intermediate film 15 having a thickness of 38 to 2.29 mm may be used, and any shape and material may be used as long as the intermediate film 15 can be bonded to the glass plates 11 and 12.

本第１の実施の形態では、レーザ照射部がＹＡＧレーザ発振装置５０のみで構成され、ＹＡＧレーザ発振装置５０から出射されたレーザ光が合せガラス１０に直接照射されているが、これに限定されるものではなく、図８に示すように、レーザ照射部がＹＡＧレーザ発振装置５０と、ミラー８１と、レンズ８２とで構成されていてもよい。ここで、レンズ８２は、中間膜１５との距離を焦点距離（例えば１００ｍｍ）とするものが用いられる。これにより、レーザ光の焦点を中間膜１５に合わせることができる。レーザ光の焦点が中間膜１５に合っている場合、ＹＡＧレーザ発振装置５０から出射されたエネルギ密度が５〜２５Ｊ／ｃｍ２のレーザ光は、中間膜におけるエネルギ密度が５〜１２．７Ｊ／ｃｍ２となるのに対し、ガラス１１の表面におけるエネルギ密度が０．７〜１．３Ｊ／ｃｍ２と小さくなり、ガラス１１の表面にダメージを与えるのを防止することができる。 In the first embodiment, the laser irradiation unit is configured only by the YAG laser oscillation device 50, and the laser light emitted from the YAG laser oscillation device 50 is directly irradiated on the laminated glass 10. However, the present invention is not limited to this. Instead, as shown in FIG. 8, the laser irradiation unit may be composed of a YAG laser oscillation device 50, a mirror 81, and a lens 82. Here, a lens having a focal length (for example, 100 mm) as the distance from the intermediate film 15 is used as the lens 82. As a result, the laser beam can be focused on the intermediate film 15. When the laser beam is focused on the intermediate film 15, the laser beam having an energy density of 5 to 25 J / cm 2 emitted from the YAG laser oscillation device 50 has an energy density of 5 to 12.7 J / cm 2 in the intermediate film. whereas the 2, can be an energy density at the surface of the glass 11 is reduced and 0.7~1.3J / cm 2, to prevent the damage to the surface of the glass 11.

本第１の実施の形態では、ＹＡＧレーザ発振装置５０を用いているが、これに限定されるものではなく、例えばＹＶＯ４レーザ発振装置を用いてもよい。 In the first embodiment, the YAG laser oscillation device 50 is used. However, the present invention is not limited to this. For example, a YVO 4 laser oscillation device may be used.

本第１の実施の形態では、ＹＡＧレーザ発振装置５０及びホイールカッター４０をＸ方向又はＹ方向（２軸方向）に速度３００ｍｍ／secで移動させているが、ＹＡＧレーザ発振装置５０及びホイールカッター４０を固定して合せガラス１０をＸ方向又はＹ方向（２軸方向）に移動させてもよく、移動速度も３００ｍｍ／secに限定されるものではない。   In the first embodiment, the YAG laser oscillation device 50 and the wheel cutter 40 are moved in the X direction or the Y direction (biaxial direction) at a speed of 300 mm / sec. And the laminated glass 10 may be moved in the X direction or the Y direction (biaxial direction), and the moving speed is not limited to 300 mm / sec.

次に、本発明の第２の実施の形態に係る合せガラスの切断方法について説明する。   Next, a method for cutting a laminated glass according to the second embodiment of the present invention will be described.

図９は、本発明の第２の実施の形態に係る合せガラスの切断方法を実行する合せガラス切断装置の斜視図である。   FIG. 9 is a perspective view of a laminated glass cutting device that executes the method for cutting laminated glass according to the second embodiment of the present invention.

図９において、合せガラス切断装置９０は、合せガラス１０を上に載置して矢印方向に所定速度で移動させる不図示の載置台と、紫外線波長領域（波長３５５ｎｍ）のレーザ光を出力６Ｗで発振するＹＡＧレーザ発振装置９１（レーザ照射手段）と、ＹＡＧレーザ発振装置９１から出射されたレーザ光を反射するミラー９８と、反射されたレーザ光が中間膜１５の厚み中心付近を焦点として照射されるように設けられた焦点距離ｆが１００ｍｍの集光レンズ９２（レンズ）と、合せガラス１０に切れ目を入れるＷＣ（タングステンカーバイト）製のホイールカッター９３（切れ目形成手段）と、ホイールカッター９３を合せガラス１０の外側面１３，１４に所定の押圧力で押圧する空気圧シリンダ装置９４と、赤外線波長領域（波長１０６００ｎｍ）のレーザ光を出力１００Ｗで発振する炭酸ガスレーザ発振装置９５（他のレーザ照射手段）と、炭酸ガスレーザ発振装置９５から出射されたレーザ光の切断効率を上げるビームエキスパンダ９６と、レーザ光を反射するミラー９９と、反射されたレーザ光が板ガラス１１，１２面上で２５×１ｍｍの楕円状Ｚを形成して照射されるように設けられたシリンドリカルレンズ９７（他のレンズ）とを備える。   In FIG. 9, a laminated glass cutting device 90 places a laminated glass 10 on top and moves a laser beam in an ultraviolet wavelength region (wavelength 355 nm) with an output of 6 W, which is not shown in the drawing and moves in a direction indicated by an arrow. The YAG laser oscillation device 91 (laser irradiation means) that oscillates, the mirror 98 that reflects the laser light emitted from the YAG laser oscillation device 91, and the reflected laser light are irradiated around the thickness center of the intermediate film 15 as a focal point. A condensing lens 92 (lens) having a focal length f of 100 mm, a wheel cutter 93 (cut forming means) made of WC (tungsten carbide) for cutting the laminated glass 10, and a wheel cutter 93. A pneumatic cylinder device 94 that presses the outer surfaces 13 and 14 of the laminated glass 10 with a predetermined pressing force, and an infrared wavelength region (wavelength 1060). nm), a carbon dioxide laser oscillation device 95 (other laser irradiation means) that oscillates the laser light at an output of 100 W, a beam expander 96 that increases the cutting efficiency of the laser light emitted from the carbon dioxide laser oscillation device 95, and a laser beam It includes a reflecting mirror 99 and a cylindrical lens 97 (other lens) provided so that the reflected laser light is irradiated with a 25 × 1 mm elliptical Z formed on the surfaces of the glass plates 11 and 12.

合せガラス１０は可視光波長領域において高い透過率を有する（図１０におけるＳ）。また、板ガラス１１，１２（図１０におけるＴ）と中間膜１５とは可視光波長領域においてほぼ同じ光学特性を示す（図１０におけるＵ）。従って、可視光波長領域のレーザ光によって合せガラス１０の加工を行うのは不適切である。そこで、合せガラス１０の加工を可視光波長領域以外の領域のレーザ光によって行うのが好ましい。具体的には、紫外線波長領域のレーザ光によって中間膜１５の加工を行い、波長領域３００ｎｍ以下又は赤外線波長領域のレーザ光によって板ガラス１１，１２の加工を行うのが好ましい。   Laminated glass 10 has a high transmittance in the visible light wavelength region (S in FIG. 10). Further, the glass plates 11 and 12 (T in FIG. 10) and the intermediate film 15 exhibit substantially the same optical characteristics in the visible light wavelength region (U in FIG. 10). Therefore, it is inappropriate to process the laminated glass 10 with laser light in the visible wavelength region. Therefore, it is preferable to process the laminated glass 10 with laser light in a region other than the visible light wavelength region. Specifically, it is preferable to process the intermediate film 15 with laser light in the ultraviolet wavelength region and to process the plate glasses 11 and 12 with laser light in the wavelength region of 300 nm or less or the infrared wavelength region.

中間膜１５の加工において、紫外線波長領域のレーザ光のうちでも、板ガラス１１，１２のレーザ光吸収率よりも中間膜１５のレーザ光吸収率が大きくなる波長領域３１０〜４１０ｎｍのレーザ光が好ましく、さらには、板ガラス１１，１２のレーザ光吸収率と中間膜１５のレーザ光吸収率との差がレーザ光全体の５０％以上となる波長領域３３０〜３９５ｎｍのレーザ光がより好ましく、中間膜１５の加工のみを効率よく行うことができる。   In the processing of the intermediate film 15, among the laser light in the ultraviolet wavelength region, laser light in a wavelength region of 310 to 410 nm in which the laser light absorption rate of the intermediate film 15 is larger than the laser light absorption rate of the plate glasses 11 and 12 is preferable. Furthermore, a laser beam having a wavelength region of 330 to 395 nm in which the difference between the laser beam absorption rate of the plate glasses 11 and 12 and the laser beam absorption rate of the intermediate film 15 is 50% or more of the entire laser beam is more preferable. Only processing can be performed efficiently.

なお、波長領域３００ｎｍ以下の紫外線波長領域のレーザ光又は赤外線波長領域のレーザ光では板ガラス１１，１２の吸収率が高くなってレーザ光のエネルギは板ガラス１１，１２に吸収されてしまうので、中間膜１５の加工に適さない。   In the case of laser light in the ultraviolet wavelength region or wavelength region of 300 nm or less or in the infrared wavelength region, the absorptivity of the glass plates 11 and 12 is increased and the energy of the laser light is absorbed by the glass plates 11 and 12. Not suitable for 15 processing.

一方、板ガラス１１，１２の加工において、赤外線波長領域のレーザ光が適しており、赤外線波長領域のレーザ光のうちでも、波長領域１０００〜１０６００ｎｍのレーザ光がより適している。これは、波長領域３００ｎｍ以下の紫外線波長領域のレーザ光（例えば、４倍波ＹＡＧレーザ（波長２６６ｎｍ）、ＫｒＦエキシマレーザ（波長２５５ｎｍ））が、赤外線波長領域のレーザ光（例えば、基本波ＹＡＧレーザ（波長１０６４ｎｍ）、炭酸ガスレーザ（波長１０６００ｎｍ））と比較して、発振効率が低いと共に、それを発振する装置も高額だからである。   On the other hand, in the processing of the plate glasses 11 and 12, laser light in the infrared wavelength region is suitable, and among laser light in the infrared wavelength region, laser light in the wavelength region of 1000 to 10600 nm is more suitable. This is because laser light in an ultraviolet wavelength region having a wavelength region of 300 nm or less (for example, a fourth harmonic YAG laser (wavelength 266 nm), a KrF excimer laser (wavelength 255 nm)) is converted into a laser beam in an infrared wavelength region (for example, a fundamental wave YAG laser). This is because the oscillation efficiency is low and the device for oscillating it is expensive as compared with the carbon dioxide laser (wavelength 10600 nm).

ＹＡＧレーザ発振装置９１は、波長３５５ｎｍのレーザ光を出力する。この出力されたレーザ光は、ミラー９８によって反射され、次いで、集光レンズ９２を透過し、中間膜の厚み中心付近に焦点を結ぶように照射される。   The YAG laser oscillation device 91 outputs laser light having a wavelength of 355 nm. This output laser light is reflected by the mirror 98, then passes through the condenser lens 92, and is irradiated so as to focus on the vicinity of the thickness center of the intermediate film.

炭酸ガスレーザ発振装置９５は、波長１０６００ｎｍのレーザ光を出力する。この出力されたレーザ光は、切断効率を上げるためにビームエキスパンダ９６によって拡大される。この拡大されたレーザ光は、ミラー９９により反射され、次いで、シリンドリカルレンズ９７を透過し、板ガラス１１，１２面上で２５×１ｍｍの楕円状（図９におけるＺ）が形成されるように照射される。板ガラス１１，１２に波長１０６００ｎｍのレーザ光を照射する際、板ガラス１１，１２の温度が軟化点を越えない範囲に制御され、板ガラス１１，１２に発生する熱応力によって、予めホイールカッター９３によってガラスに形成された切れ目（亀裂）が伸展してガラスが切断される。   The carbon dioxide laser oscillation device 95 outputs laser light having a wavelength of 10600 nm. The output laser light is expanded by the beam expander 96 in order to increase the cutting efficiency. This expanded laser beam is reflected by the mirror 99, then passes through the cylindrical lens 97, and is irradiated so as to form an ellipse of 25 × 1 mm (Z in FIG. 9) on the surface of the plate glass 11 and 12. The When irradiating the plate glasses 11 and 12 with a laser beam having a wavelength of 10600 nm, the temperature of the plate glasses 11 and 12 is controlled within a range that does not exceed the softening point. The formed cut (crack) is extended and the glass is cut.

以下、本発明の第２の実施の形態に係る合せガラスの切断方法を説明する。   Hereinafter, a method for cutting laminated glass according to the second embodiment of the present invention will be described.

図１１は、本発明の第２の実施の形態に係る切断方法を示すフローチャートである。   FIG. 11 is a flowchart showing a cutting method according to the second embodiment of the present invention.

図１１において、まず、合せガラス１０を合せガラス切断装置９０にセットし（ステップＳ１１０１）、ホイールカッター９３が外側面１３，１４を押圧するようにして板ガラスの端部に小さな切れ目（亀裂）を形成する（ステップＳ１１０２）。次に、波長３５５ｎｍのレーザ光を中間膜１５に、波長１０６００ｎｍのレーザ光を板ガラス１１，１２に、レーザビームが同時且つ連続的に切断線上を走査するように照射する（ステップＳ１１０３）。この照射により、波長３５５ｎｍのレーザ光により中間膜が切断され、波長１０６００ｎｍのレーザ光により外側面１３，１４に形成された亀裂が伸展する。その亀裂の伸展により形成された連続的な亀裂に沿って、その連続的な亀裂が形成された板ガラス１１，１２面の反対面から押圧し（ステップＳ１１０４）、合せガラス１０を切断する。   In FIG. 11, first, the laminated glass 10 is set in the laminated glass cutting device 90 (step S1101), and a small break (crack) is formed at the edge of the sheet glass so that the wheel cutter 93 presses the outer side surfaces 13 and 14. (Step S1102). Next, a laser beam having a wavelength of 355 nm is irradiated on the intermediate film 15 and a laser beam having a wavelength of 10600 nm is irradiated on the glass plates 11 and 12 so that the laser beam scans the cutting line simultaneously and continuously (step S1103). By this irradiation, the intermediate film is cut by the laser beam having a wavelength of 355 nm, and cracks formed on the outer surfaces 13 and 14 are extended by the laser beam having a wavelength of 10600 nm. Along the continuous crack formed by the extension of the crack, the laminated glass 10 is cut by pressing from the opposite surface of the plate glass 11 and 12 surface where the continuous crack is formed (step S1104).

本第２の実施の形態によれば、ガラスカッタによる機械切断ではなく、熱応力切断によりガラスを切断するので、圧縮破壊層やクラックのない良好な切断面を得ることができる。   According to the second embodiment, since the glass is cut by thermal stress cutting rather than mechanical cutting by a glass cutter, a good cut surface free from a compression fracture layer and cracks can be obtained.

本第２の実施の形態では、紫外線波長領域のレーザ照射と赤外線波長領域のレーザ照射を同時且つ連続的に行っているが、これに限定されるものではなく、紫外線波長領域のレーザ光の照射後に赤外線波長領域のレーザ光を照射してもよく、また、赤外線波長領域のレーザ光の照射後に紫外線波長領域のレーザ光を照射してもよい。   In the second embodiment, laser irradiation in the ultraviolet wavelength region and laser irradiation in the infrared wavelength region are performed simultaneously and continuously. However, the present invention is not limited to this, and laser light irradiation in the ultraviolet wavelength region is performed. The laser beam in the infrared wavelength region may be irradiated later, and the laser beam in the ultraviolet wavelength region may be irradiated after the laser beam irradiation in the infrared wavelength region.

本第２の実施の形態では、レーザ照射手段としてＹＡＧレーザ発振装置９１を用い、他のレーザ照射手段として炭酸ガスレーザ発振装置９５を用いているが、これに限定されるものではない。   In the second embodiment, the YAG laser oscillation device 91 is used as the laser irradiation means and the carbon dioxide laser oscillation device 95 is used as the other laser irradiation means, but the present invention is not limited to this.

本発明の実施の形態に係る合せガラスの切断方法によって切断すべき合せガラスを示す図である。It is a figure which shows the laminated glass which should be cut | disconnected by the cutting method of the laminated glass which concerns on embodiment of this invention. 本発明の第１の実施の形態に係る合せガラスの切断方法を実行する合せガラス切断装置の正面図である。It is a front view of the laminated glass cutting device which performs the cutting method of the laminated glass which concerns on the 1st Embodiment of this invention. 図２の合せガラス切断装置２０の平面図である。It is a top view of the laminated glass cutting device 20 of FIG. 図２のカッターヘッド２８の正面図である。It is a front view of the cutter head 28 of FIG. 図４のホイールカッター４０の部分切欠き斜視図である。FIG. 5 is a partially cutaway perspective view of the wheel cutter 40 of FIG. 4. 本発明の第１の実施の形態に係る合せガラスの切断方法を示すフローチャートである。It is a flowchart which shows the cutting method of the laminated glass which concerns on the 1st Embodiment of this invention. 図６の切断方法で切断される合せガラス１０の切断パターンの一例を示す図である。It is a figure which shows an example of the cutting pattern of the laminated glass 10 cut | disconnected by the cutting method of FIG. 図２の合せガラス切断装置２０におけるレーザ照射部の変形例を示す模式図である。It is a schematic diagram which shows the modification of the laser irradiation part in the laminated glass cutting device 20 of FIG. 本発明の第２の実施の形態に係る合せガラスの切断方法を実行する合せガラス切断装置の斜視図である。It is a perspective view of the laminated glass cutting device which performs the cutting method of the laminated glass which concerns on the 2nd Embodiment of this invention. 図１の合せガラス１０及び図１における板ガラス１１，１２の分光特性を示すグラフである。It is a graph which shows the spectral characteristics of the laminated glass 10 of FIG. 1, and the plate glass 11 and 12 in FIG. 本発明の第２の実施の形態に係る合せガラスの切断方法を示すフローチャートである。It is a flowchart which shows the cutting method of the laminated glass which concerns on the 2nd Embodiment of this invention. 従来の合せガラスの切断方法を示すフローチャートである。It is a flowchart which shows the cutting method of the conventional laminated glass. 従来の切断方法で切断される合せガラスの切断パターンの一例を示す図である。It is a figure which shows an example of the cutting pattern of the laminated glass cut | disconnected by the conventional cutting method.

符号の説明Explanation of symbols

１０ 合せガラス
１１ 板ガラス
１２ 板ガラス
１３ 外側面
１４ 外側面
１５ 中間膜
２０ 合せガラス切断装置
４０ ホイールカッター
５０ ＹＡＧレーザ発振装置 DESCRIPTION OF SYMBOLS 10 Laminated glass 11 Plate glass 12 Plate glass 13 Outer side surface 14 Outer side surface 15 Intermediate film 20 Laminated glass cutting device 40 Wheel cutter 50 YAG laser oscillation device

Claims (18)

互いに対向する一対の板ガラスと、前記一対の板ガラスの間に介装された中間膜とを備える合せガラスの切断方法において、前記中間膜が蒸発温度以上になるまで前記中間膜に所定波長領域のレーザ光を照射するレーザ照射ステップと、前記板ガラスの外側面に切れ目を入れるべくカッターを前記板ガラスの外側面上に所定の押圧力で押圧する押圧ステップとを備えることを特徴とする合せガラスの切断方法。   In a method for cutting a laminated glass comprising a pair of plate glasses opposed to each other and an intermediate film interposed between the pair of plate glasses, a laser having a predetermined wavelength region is applied to the intermediate film until the intermediate film reaches an evaporation temperature or higher. A method for cutting laminated glass, comprising: a laser irradiation step for irradiating light; and a pressing step for pressing a cutter on the outer surface of the plate glass with a predetermined pressing force so as to make a cut in the outer surface of the plate glass. . 前記レーザ照射ステップと前記押圧ステップはほぼ同時に行われることを特徴とする請求項１記載の合せガラスの切断方法。   The method for cutting laminated glass according to claim 1, wherein the laser irradiation step and the pressing step are performed substantially simultaneously. 前記板ガラスが所定温度になるまで前記板ガラスに他の所定波長領域のレーザ光を照射する他のレーザ照射ステップとをさらに備えることを特徴とする請求項１又は２記載の合せガラスの切断方法。   The method for cutting laminated glass according to claim 1, further comprising: another laser irradiation step of irradiating the plate glass with laser light of another predetermined wavelength region until the plate glass reaches a predetermined temperature. 前記所定温度は前記板ガラスの軟化点以下であることを特徴とする請求項３記載の合せガラスの切断方法。   The method for cutting laminated glass according to claim 3, wherein the predetermined temperature is equal to or lower than a softening point of the plate glass. 前記レーザ照射ステップと前記他のレーザ照射ステップはほぼ同時に行われることを特徴とする請求項１乃至４のいずれか１項に記載の合せガラスの切断方法。   The method for cutting laminated glass according to any one of claims 1 to 4, wherein the laser irradiation step and the other laser irradiation step are performed substantially simultaneously. 前記所定波長領域は紫外線波長領域であることを特徴とする請求項１乃至５のいずれか１項に記載の合せガラスの切断方法。   The method for cutting laminated glass according to any one of claims 1 to 5, wherein the predetermined wavelength region is an ultraviolet wavelength region. 前記紫外線波長領域は３１０〜４１０ｎｍであることを特徴とする請求項６記載の合せガラスの切断方法。   The method for cutting laminated glass according to claim 6, wherein the ultraviolet wavelength region is 310 to 410 nm. 前記他の所定波長領域は赤外線波長領域であることを特徴とする請求項３乃至７記載の合せガラスの切断方法。   8. The method for cutting laminated glass according to claim 3, wherein the other predetermined wavelength region is an infrared wavelength region. 前記赤外線波長領域は１０００〜１０６００ｎｍであることを特徴とする請求項８記載の合せガラスの切断方法。   The method for cutting laminated glass according to claim 8, wherein the infrared wavelength region is 1000 to 10600 nm. 前記紫外線波長領域のレーザ光のエネルギ密度は、５〜２５Ｊ／ｃｍ２であることを特徴とする請求項６乃至９のいずれか１項に記載の合せガラスの切断方法。 Energy density of the laser beam of the ultraviolet wavelength region, the cutting method of the laminated glass according to any one of claims 6-9, characterized in that a 5~25J / cm 2. 前記赤外線波長領域のレーザ光のエネルギ密度は、３００〜２０００Ｗ／ｃｍ２であることを特徴とする請求項８乃至１０のいずれか１項に記載の合せガラスの切断方法。 11. The method for cutting laminated glass according to claim 8, wherein the energy density of the laser light in the infrared wavelength region is 300 to 2000 W / cm 2 . 互いに対向する一対の板ガラスと、前記一対の板ガラスの間に介装された中間膜とを備える合せガラスを切断する合せガラス切断装置において、前記中間膜に所定波長領域のレーザ光を切断線上に沿って照射するレーザ照射手段と、前記板ガラスの外側面に前記切断線上に沿って切れ目を入れる切れ目形成手段とを備えることを特徴とする合せガラス切断装置。   In a laminated glass cutting apparatus for cutting a laminated glass comprising a pair of plate glasses facing each other and an intermediate film interposed between the pair of plate glasses, laser light in a predetermined wavelength region is applied to the intermediate film along a cutting line. A laminated glass cutting apparatus, comprising: a laser irradiation means for irradiating; and a cut forming means for making a cut along the cutting line on an outer surface of the plate glass. 前記レーザ照射手段及び前記切れ目形成手段は同時に作動して、前記レーザ光の照射及び前記切れ目の形成を連続して行うことを特徴とする請求項１２記載の合せガラス切断装置。   13. The laminated glass cutting device according to claim 12, wherein the laser irradiation unit and the cut forming unit operate simultaneously to continuously perform the irradiation of the laser light and the formation of the cut. 前記レーザ照射手段は、前記中間膜との距離を焦点距離とするレンズを有することを特徴とする請求項１２又は１３記載の合せガラス切断装置。   The laminated glass cutting apparatus according to claim 12 or 13, wherein the laser irradiation means includes a lens having a focal length that is a distance from the intermediate film. 前記板ガラスの外側面における前記切断線上に沿った切れ目に他の所定波長領域のレーザ光を照射する他のレーザ照射手段とを備えることを特徴とする請求項１２乃至１４のいずれか１項に記載の合せガラス切断装置。   15. The apparatus according to claim 12, further comprising: another laser irradiation unit that irradiates a laser beam having another predetermined wavelength region at a cut along the cutting line on the outer surface of the plate glass. Laminated glass cutting device. 前記他のレーザ照射手段は、前記板ガラスの表面に前記他の所定波長領域のレーザ光を照射するための他のレンズを有することを特徴とする請求項１５記載の合せガラス切断装置。   16. The laminated glass cutting device according to claim 15, wherein the other laser irradiation means includes another lens for irradiating the surface of the plate glass with the laser beam having the other predetermined wavelength region. 前記所定波長領域のレーザ光と前記他の所定波長領域のレーザ光を前記合せガラスに対して走査する走査手段をさらに備えることを特徴とする請求項１５又は１６記載の合せガラス切断装置。   The laminated glass cutting device according to claim 15 or 16, further comprising a scanning unit that scans the laminated glass with the laser light of the predetermined wavelength region and the laser light of the other predetermined wavelength region. 前記レーザ照射手段及び前記他のレーザ照射手段手段は同時に作動して、前記中間膜へのレーザ光の照射及び前記切れ目へのレーザ光の照射を連続して行うことを特徴とする請求項１５乃至１７のいずれか１項に記載の合せガラス切断装置。   16. The laser irradiation unit and the other laser irradiation unit are operated simultaneously to continuously irradiate the intermediate film with laser light and irradiate the cut with laser light. The laminated glass cutting device according to any one of 17.
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