JPS61229487A - レ−ザビ−ムによるガラス切断方法 - Google Patents

レ−ザビ−ムによるガラス切断方法

Info

Publication number
JPS61229487A
JPS61229487A JP60069014A JP6901485A JPS61229487A JP S61229487 A JPS61229487 A JP S61229487A JP 60069014 A JP60069014 A JP 60069014A JP 6901485 A JP6901485 A JP 6901485A JP S61229487 A JPS61229487 A JP S61229487A
Authority
JP
Japan
Prior art keywords
laser beam
glass
cut
moil
cutting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP60069014A
Other languages
English (en)
Japanese (ja)
Inventor
Takao Minagawa
皆川　多可夫
Shigeo Shiono
塩野　繁男
Junichi Nishibashi
西橋　淳一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SASAKI GLASS KK
Hitachi Ltd
Original Assignee
SASAKI GLASS KK
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SASAKI GLASS KK, Hitachi Ltd filed Critical SASAKI GLASS KK
Priority to JP60069014A priority Critical patent/JPS61229487A/ja
Priority to US06/810,187 priority patent/US4682003A/en
Priority to BE2/60892A priority patent/BE903908A/fr
Priority to IT23379/85A priority patent/IT1200499B/it
Priority to DE19853546001 priority patent/DE3546001A1/de
Priority to FR858519245A priority patent/FR2579974B1/fr
Priority to GB08607322A priority patent/GB2173186B/en
Publication of JPS61229487A publication Critical patent/JPS61229487A/ja
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
    • C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
    • C03B29/06—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with horizontal displacement of the products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • B23K26/3568—Modifying rugosity
    • B23K26/3576—Diminishing rugosity, e.g. grinding; Polishing; Smoothing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B21/00—Severing glass sheets, tubes or rods while still plastic
    • C03B21/06—Severing glass sheets, tubes or rods while still plastic by flashing-off, burning-off or fusing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Laser Beam Processing (AREA)
JP60069014A 1985-04-03 1985-04-03 レ−ザビ−ムによるガラス切断方法 Pending JPS61229487A (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP60069014A JPS61229487A (ja) 1985-04-03 1985-04-03 レ−ザビ−ムによるガラス切断方法
US06/810,187 US4682003A (en) 1985-04-03 1985-12-18 Laser beam glass cutting
BE2/60892A BE903908A (fr) 1985-04-03 1985-12-20 Procede de decoupage du verre au moyen d'un faisceau laser.
IT23379/85A IT1200499B (it) 1985-04-03 1985-12-24 Procedimento per il taglio di vetro mediante raggio laser
DE19853546001 DE3546001A1 (de) 1985-04-03 1985-12-24 Glasschneiden mit laserstrahlen
FR858519245A FR2579974B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1985-04-03 1985-12-26
GB08607322A GB2173186B (en) 1985-04-03 1986-03-25 Laser beam glass cutting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60069014A JPS61229487A (ja) 1985-04-03 1985-04-03 レ−ザビ−ムによるガラス切断方法

Publications (1)

Publication Number Publication Date
JPS61229487A true JPS61229487A (ja) 1986-10-13

Family

ID=13390309

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60069014A Pending JPS61229487A (ja) 1985-04-03 1985-04-03 レ−ザビ−ムによるガラス切断方法

Country Status (7)

Country Link
US (1) US4682003A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS61229487A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE903908A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3546001A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2579974B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2173186B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1200499B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6479031A (en) * 1987-09-19 1989-03-24 Ishizuka Glass Method for cutting moil by laser beam
WO2011037167A1 (ja) * 2009-09-24 2011-03-31 株式会社Ｉｈｉ検査計測 脆性ワークの切断方法及び切断装置
JP2012519136A (ja) * 2009-02-27 2012-08-23 コーニング インコーポレイテッド ガラスリボン上の領域を成形する方法
JP2012527400A (ja) * 2009-05-21 2012-11-08 コーニング インコーポレイテッド 脆性材料シートの分割方法
JP2015502898A (ja) * 2011-10-07 2015-01-29 ショット アクチエンゲゼルシャフトＳｃｈｏｔｔ ＡＧ 縁部が特殊に形成された薄手ガラスを切断する方法
TWI491574B (zh) * 2011-02-10 2015-07-11 Ihi Inspection & Instrumentation Co Ltd 脆性工件之切斷方法及切斷裝置
JP2017529311A (ja) * 2014-07-11 2017-10-05 コーニング インコーポレイテッド ガラス物品内にパルスレーザで穿孔を生じさせることによるガラス切断システムおよび方法

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305106C2 (de) * 1993-02-19 1995-02-02 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Schneiden eines spröden Körpers mit Laserstrahlung
DE4305107C2 (de) * 1993-02-19 1995-02-23 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Schneiden eines spröden Körpers mit Laserstrahlung
WO1994022778A1 (de) * 1993-04-02 1994-10-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum schneiden von hohlglas
US5387776A (en) * 1993-05-11 1995-02-07 General Electric Company Method of separation of pieces from super hard material by partial laser cut and pressure cleavage
DE4320895C2 (de) * 1993-06-24 1997-06-12 Deutsche Forsch Luft Raumfahrt Verfahren und Vorrichtung zum Einbringen einer Ausnehmung in einen Glaskörper
US5564272A (en) * 1994-07-29 1996-10-15 Thiokol Corporation Slotted hybrid pressure vessel
DE4434648A1 (de) * 1994-09-28 1996-04-04 Glaswerke H U Kl Ritzenhoff Gm Verfahren zum Absprengen einer Glaskuppe von einem dünnwandigen geblasenen Glas
US5742026A (en) * 1995-06-26 1998-04-21 Corning Incorporated Processes for polishing glass and glass-ceramic surfaces using excimer laser radiation
DE19601032C1 (de) * 1996-01-13 1997-04-10 Univ Schiller Jena Vorrichtung zur Materialbearbeitung mit Laserstrahlung
DE19609199A1 (de) 1996-03-09 1997-09-11 Vetter & Co Apotheker Verfahren zur Bearbeitung von Werkstücken aus festen Materialien sowie Vorrichtung zur Durchführung des Verfahrens
IT1284082B1 (it) * 1996-06-27 1998-05-08 Calp Spa Metodo e dispositivo per il taglio mediante un raggio laser di articoli cavi in vetro
DE19735357A1 (de) * 1997-08-14 1999-02-18 Linde Ag Verfahren zum Laserschneiden von Glas
SE9703425D0 (sv) * 1997-09-23 1997-09-23 Pharmacia & Upjohn Ab Prefilled ampooules and manufacture thereof
US6087624A (en) * 1998-05-18 2000-07-11 Lear Corporation Programmable fiber chopper and method therefor
US5983676A (en) * 1998-05-18 1999-11-16 Lear Corporation Laser fiber chopper
US6252197B1 (en) 1998-12-01 2001-06-26 Accudyne Display And Semiconductor Systems, Inc. Method and apparatus for separating non-metallic substrates utilizing a supplemental mechanical force applicator
US6259058B1 (en) 1998-12-01 2001-07-10 Accudyne Display And Semiconductor Systems, Inc. Apparatus for separating non-metallic substrates
US6420678B1 (en) 1998-12-01 2002-07-16 Brian L. Hoekstra Method for separating non-metallic substrates
US6297869B1 (en) * 1998-12-04 2001-10-02 Samsung Electronics Co., Ltd. Substrate and a liquid crystal display panel capable of being cut by using a laser and a method for manufacturing the same
DE19904978A1 (de) * 1999-02-06 2000-08-10 Vetter & Co Apotheker Verfahren zur Herstellung von Zylinderrohrabschnitten aus vorzugsweise aus Glas bestehenden Rohren und Vorrichtung zur Durchführung des Verfahrens
KR100606955B1 (ko) * 1999-09-21 2006-07-31 엘지.필립스 엘시디 주식회사 레이저 절단장치 및 그것에 의한 유리기판 절단방법
ES2304987T3 (es) 1999-11-24 2008-11-01 Applied Photonics, Inc. Metodo y aparato para separar materiales no metalicos.
DE10013688B4 (de) * 2000-03-21 2004-05-13 Leica Microsystems Nussloch Gmbh Verwendung eines Verfahren zur Herstellung einer, aus anorganischem Glas bestehenden Schnittstreckerplatte
DE10013693B4 (de) * 2000-03-21 2004-12-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung einer aus anorganischem Glas bestehenden Schnittstreckerplatte
JP4659300B2 (ja) * 2000-09-13 2011-03-30 浜松ホトニクス株式会社 レーザ加工方法及び半導体チップの製造方法
DE10047850A1 (de) * 2000-09-27 2002-04-25 Schott Rohrglas Gmbh Verfahren und Vorrichtung zum Ablängen von Glasrohren
US20020170318A1 (en) * 2001-04-02 2002-11-21 Andreas Gartner Brief summary of the invention
KR100701013B1 (ko) * 2001-05-21 2007-03-29 삼성전자주식회사 레이저 빔을 이용한 비금속 기판의 절단방법 및 장치
US6521862B1 (en) 2001-10-09 2003-02-18 International Business Machines Corporation Apparatus and method for improving chamfer quality of disk edge surfaces with laser treatment
TWI326626B (en) * 2002-03-12 2010-07-01 Hamamatsu Photonics Kk Laser processing method
WO2003076119A1 (en) 2002-03-12 2003-09-18 Hamamatsu Photonics K.K. Method of cutting processed object
WO2003077295A1 (en) 2002-03-12 2003-09-18 Hamamatsu Photonics K.K. Method for dicing substrate
TWI520269B (zh) 2002-12-03 2016-02-01 Hamamatsu Photonics Kk Cutting method of semiconductor substrate
FR2852250B1 (fr) * 2003-03-11 2009-07-24 Jean Luc Jouvin Fourreau de protection pour canule, un ensemble d'injection comportant un tel fourreau et aiguille equipee d'un tel fourreau
DE60315515T2 (de) * 2003-03-12 2007-12-13 Hamamatsu Photonics K.K., Hamamatsu Laserstrahlbearbeitungsverfahren
US20070039990A1 (en) * 2005-05-06 2007-02-22 Kemmerer Marvin W Impact induced crack propagation in a brittle material
BE1016686A3 (fr) * 2005-07-18 2007-04-03 Georges Cuvelier Installation pour la realisation d'operations de mise en forme de pieces en verre ou en cristal.
DE102005057125A1 (de) * 2005-11-30 2007-06-06 Füller Glastechnologie Vertriebs-Gmbh Verfahren zum Herstellen von Glasgegenständen, insbesondere Verschlußkörpern aus Glas, sowie Vorrichtung, Anlage und deren Verwendung
DE102005061833B4 (de) * 2005-12-23 2010-03-18 Zwiesel Kristallglas Aktiengesellschaft Vorrichtung und Verfahren zum Abtrennen einer Blaskappe
US20080041833A1 (en) * 2006-08-21 2008-02-21 Nicholas Dominic Cavallaro Thermal tensioning during thermal edge finishing
CN101646524A (zh) * 2007-02-23 2010-02-10 康宁股份有限公司 热边缘精整
DE102007012146B4 (de) * 2007-03-12 2012-11-29 Lzh Laserzentrum Hannover E.V. Vorrichtung und Verfahren zur Umformung von Bauteilen aus unter Wärmeeinfluß verformbaren Materialien, insbesondere aus Glas
DE102008011808B4 (de) * 2008-02-29 2012-11-15 Zwiesel Kristallglas Aktiengesellschaft Verfahren und Vorrichtung zum Entfernen der Glasformnähte mit Polieren der Nahtstellen sowie dadurch bearbeitetes Glasprodukt
PT2108625E (pt) * 2008-04-09 2013-04-08 Zwiesel Kristallglas Ag Processo para a produção de estruturas em relevo ou embutidas em corpos ocos, de um modo preferido em vidro
US8539795B2 (en) 2009-05-13 2013-09-24 Corning Incorporated Methods for cutting a fragile material
RU2426700C2 (ru) * 2009-09-18 2011-08-20 Владимир Степанович Кондратенко Способ притупления острых кромок изделий
CN101700957B (zh) * 2009-10-30 2012-06-27 武汉理工大学 消除玻璃边缘微裂纹提高玻璃强度的方法
CN102060438B (zh) * 2009-11-17 2013-03-27 郅健斌 一种太阳能玻璃管激光快速切割装置
DE102010011207A1 (de) 2010-03-09 2011-09-15 B. Braun Melsungen Ag Vorrichtung zum Schneiden von im Verbund vorliegenden miteinander verbundenen Kunststofferzeugnissen für den medizinischen Bereich
DE102011006738B4 (de) 2011-04-04 2016-07-21 Tu Bergakademie Freiberg Verfahren zum vollständigen Vereinzeln von Hohlglas und Herstellungsverfahren für einen Glashohlkörper oder Behälterglas
US9120179B2 (en) * 2012-09-20 2015-09-01 Apple Inc. Multi-step cutting process
US9844833B2 (en) 2014-01-30 2017-12-19 Apple Inc. System and method for laser cutting sapphire using multiple gas media
US10639746B1 (en) 2014-06-20 2020-05-05 Apple Inc. Ceramic-based components having laser-etched markings
US10144107B2 (en) 2015-09-30 2018-12-04 Apple Inc. Ultrasonic polishing systems and methods of polishing brittle components for electronic devices
CN105436716B (zh) * 2015-12-16 2017-06-16 重庆嘉威特节能玻璃有限公司 一种可快速冷却的玻璃激光打孔机
CN108483893A (zh) * 2018-05-18 2018-09-04 承德汇彩玻璃器皿有限公司 一种激光爆口机
CN112783264B (zh) 2019-11-11 2025-02-11 苹果公司 包括纹理化陶瓷盖的生物识别按键
US11113494B2 (en) 2019-11-11 2021-09-07 Apple Inc. Biometric key including a textured ceramic cover
DE102020100051A1 (de) * 2020-01-03 2021-07-08 Schott Ag Verfahren zur Bearbeitung sprödharter Materialien
CN111468842A (zh) * 2020-05-28 2020-07-31 宁波飞图自动技术有限公司 一种包装容器辅助检测的切割方法及设备

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250975B (de) * 1967-09-28 N V Vereenigde Glasfabrieken (United Glassworks), Schiedam (Niederlande) Verfahren zum Abtrennen der Blaskappe von hohlen Rotationskörpern aus Glas und Vorrichtung zur Durchfuhrung des Verfahrens
US3188190A (en) * 1957-11-15 1965-06-08 Union Carbide Corp Method for fire polishing
US3107161A (en) * 1958-03-03 1963-10-15 Owens Illinois Glass Co Method of fire finishing glass tumblers
CH415980A (de) * 1960-08-13 1966-06-30 Ver Glasfab Verfahren zum Abschmelzen einer Blaskappe von einem gläsernen Umwälzkörper und Vorrichtung zur Durchführung des Verfahrens
DE1235531B (de) * 1963-01-07 1967-03-02 Putsch & Co H Abschmelzmaschine fuer Hohlglasgegenstaende mit einem rotierenden Kranz von radial verstellbaren Brennerduesen
US3510287A (en) * 1967-01-03 1970-05-05 Owens Illinois Inc Moil severing method and apparatus
US3511626A (en) * 1967-08-02 1970-05-12 Corning Glass Works Process for the prevention of adhered glass
CH495529A (de) * 1968-08-22 1970-08-31 Merz & Benteli Ag Verfahren zur Herstellung rohrförmiger, radioaktiver Lichtquellen
US3711908A (en) * 1970-08-27 1973-01-23 Ibm Method for forming small diameter tips on sintered material cathodes
US3839005A (en) * 1971-05-06 1974-10-01 Owens Illinois Inc Laser beam severing of a rotating article
GB1484724A (en) * 1974-05-21 1977-09-01 Jobling & Co James A Cutting glass tubing
US3885943A (en) * 1974-07-01 1975-05-27 Ford Motor Co Method of cutting glass with a laser
DE2700487B2 (de) * 1977-01-07 1980-07-31 Emil 8372 Zwiesel Ilk Abspreng- und Schleifautomat für Gläser
FR2415609A1 (fr) * 1978-01-25 1979-08-24 Saint Gobain Rebrulage et trempe d'articles en gobeleterie
US4467168A (en) * 1981-04-01 1984-08-21 Creative Glassworks International Method of cutting glass with a laser and an article made therewith
JPS57177896A (en) * 1981-04-27 1982-11-01 Toshiba Corp Cutter for tubular body by laser beam
US4468534A (en) * 1982-09-30 1984-08-28 Boddicker Franc W Method and device for cutting glass

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6479031A (en) * 1987-09-19 1989-03-24 Ishizuka Glass Method for cutting moil by laser beam
JP2012519136A (ja) * 2009-02-27 2012-08-23 コーニング インコーポレイテッド ガラスリボン上の領域を成形する方法
JP2012527400A (ja) * 2009-05-21 2012-11-08 コーニング インコーポレイテッド 脆性材料シートの分割方法
WO2011037167A1 (ja) * 2009-09-24 2011-03-31 株式会社Ｉｈｉ検査計測 脆性ワークの切断方法及び切断装置
CN102612499A (zh) * 2009-09-24 2012-07-25 株式会社Ihi检查计测 脆性工件的切割方法及切割装置
JP5731983B2 (ja) * 2009-09-24 2015-06-10 株式会社Ｉｈｉ検査計測 脆性ワークの切断方法及び切断装置
CN102612499B (zh) * 2009-09-24 2016-08-17 株式会社Ihi检查计测 脆性工件的切割方法及切割装置
TWI491574B (zh) * 2011-02-10 2015-07-11 Ihi Inspection & Instrumentation Co Ltd 脆性工件之切斷方法及切斷裝置
JP2015502898A (ja) * 2011-10-07 2015-01-29 ショット アクチエンゲゼルシャフトＳｃｈｏｔｔ ＡＧ 縁部が特殊に形成された薄手ガラスを切断する方法
JP2017529311A (ja) * 2014-07-11 2017-10-05 コーニング インコーポレイテッド ガラス物品内にパルスレーザで穿孔を生じさせることによるガラス切断システムおよび方法

Also Published As

Publication number Publication date
US4682003A (en) 1987-07-21
GB2173186B (en) 1988-07-13
FR2579974A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1986-10-10
GB2173186A (en) 1986-10-08
FR2579974B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-02-14
DE3546001A1 (de) 1986-10-16
IT1200499B (it) 1989-01-18
IT8523379A0 (it) 1985-12-24
BE903908A (fr) 1986-04-16
GB8607322D0 (en) 1986-04-30

Similar Documents

Publication Publication Date Title
JPS61229487A (ja) レ−ザビ−ムによるガラス切断方法
JP5756574B2 (ja) ガラスリボンを低エネルギーで分割する方法
TWI747817B (zh) 玻璃製品與包含其之記憶體碟及雷射處理玻璃工件的方法
US6259058B1 (en) Apparatus for separating non-metallic substrates
US6420678B1 (en) Method for separating non-metallic substrates
US6211488B1 (en) Method and apparatus for separating non-metallic substrates utilizing a laser initiated scribe
US6787732B1 (en) Method for laser-scribing brittle substrates and apparatus therefor
CN105906193B (zh) 用于成形玻璃体的装置和方法
TW490348B (en) Method and arrangement for cutting a flat workpiece made of brittle material
TW201605568A (zh) 藉由將脈衝雷射穿孔誘導進玻璃製品來進行玻璃切割的系統及方法
CN1105618C (zh) 用激光切割空心玻璃制品的方法和设备
JP2002510271A (ja) ガラス製品の溶断方法
JP2003512943A (ja) 脆性材料より成る工作物を迅速に切断するための方法及び装置
TW201938377A (zh) 由疊層玻璃管件製成的玻璃製品以及將疊層玻璃管件轉換成玻璃製品的系統及方法
JP2003520682A (ja) 脆い材料から作られた平らな加工物を切断するための方法及び装置
CN107108317A (zh) 用于对玻璃制品的边缘进行密封的方法和设备
US7002101B2 (en) Method and installation for laser cutting out glass pieces
JPH04182322A (ja) 石英部材の溶接方法および装置
JPWO2004002705A1 (ja) 脆性材料基板のスクライブ装置及びスクライブ方法
WO2004014625A1 (ja) 脆性材料基板のスクライブ方法およびスクライブ装置
CN113500297A (zh) 一种激光抛光方法及激光抛光设备
CN116568644A (zh) 陶瓷切割方法及装置
JP2798208B2 (ja) ガラスゴブの成形方法
AU631948B2 (en) Method for heating glass body
JP3220499B2 (ja) 軟化ガラスの供給方法および装置