JP4955717B2 - Glass forming equipment - Google Patents

Glass forming equipment Download PDF

Info

Publication number
JP4955717B2
JP4955717B2 JP2009034698A JP2009034698A JP4955717B2 JP 4955717 B2 JP4955717 B2 JP 4955717B2 JP 2009034698 A JP2009034698 A JP 2009034698A JP 2009034698 A JP2009034698 A JP 2009034698A JP 4955717 B2 JP4955717 B2 JP 4955717B2
Authority
JP
Japan
Prior art keywords
pair
glass
vertical
molten glass
forming apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2009034698A
Other languages
Japanese (ja)
Other versions
JP2010189220A (en
Inventor
浩幸 苅谷
勝彦 森定
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.)
Avanstrate Inc
Original Assignee
Avanstrate Inc
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 Avanstrate Inc filed Critical Avanstrate Inc
Priority to JP2009034698A priority Critical patent/JP4955717B2/en
Priority to SG201000939-7A priority patent/SG164336A1/en
Priority to TW099104637A priority patent/TWI488817B/en
Priority to KR1020100014757A priority patent/KR101639816B1/en
Publication of JP2010189220A publication Critical patent/JP2010189220A/en
Application granted granted Critical
Publication of JP4955717B2 publication Critical patent/JP4955717B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/005—Controlling, regulating or measuring
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/068—Means for providing the drawing force, e.g. traction or draw rollers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Glass Melting And Manufacturing (AREA)

Description

本発明は、オーバーフローダウンドロー法により板ガラスを製造する際に用いられるガラス成形装置に関する。   The present invention relates to a glass forming apparatus used when producing plate glass by an overflow down draw method.

液晶ディスプレイやプラズマディスプレイなどのフラットパネルディスプレイ（以下、「ＦＰＤ」という。）のガラス基板には、厚さが例えば０．５〜０．７ｍｍと薄い板ガラスが用いられている。このＦＰＤガラス基板用の板ガラスはサイズが大きなものであり、例えば第１世代では３００×４００ｍｍであるが、第１０世代になると２８５０×３０５０ｍｍとなる。   As a glass substrate of a flat panel display (hereinafter referred to as “FPD”) such as a liquid crystal display or a plasma display, a thin plate glass having a thickness of, for example, 0.5 to 0.7 mm is used. The plate glass for the FPD glass substrate has a large size, for example, 300 × 400 mm in the first generation, but becomes 2850 × 3050 mm in the tenth generation.

このようなＦＰＤガラス基用板ガラスを製造するには、オーバーフローダウンドロー法が最もよく使用される。オーバーフローダウンドロー法では、溶融ガラスをガラス成形装置に通すことで帯状のガラスリボンが連続的に成形される。その際、ガラスリボンが下方へ引き下げられ、その引き下げ速度によって厚みの調整が行われる。その後、ガラスリボンが所定長さで切断されて、板ガラスが製造される。   The overflow downdraw method is most often used to manufacture such FPD glass-based plate glass. In the overflow downdraw method, a glass ribbon is continuously formed by passing molten glass through a glass forming apparatus. At that time, the glass ribbon is pulled downward, and the thickness is adjusted by the pulling speed. Then, a glass ribbon is cut | disconnected by predetermined length, and plate glass is manufactured.

例えば、特許文献１には、図６に示すようなガラス成形装置１０が記載されている。このガラス成形装置１０は、所方向に延びる断面楔状の本体１１と、本体１１の両側面１２に沿って流下する溶融ガラスの幅を規制する一対のガイド１２とを備えている。   For example, Patent Document 1 describes a glass forming apparatus 10 as shown in FIG. The glass forming apparatus 10 includes a main body 11 having a wedge-shaped cross section extending in a certain direction, and a pair of guides 12 for regulating the width of molten glass flowing down along both side surfaces 12 of the main body 11.

特開２００３−３１３０３４号公報JP 2003-313034 A

ガラス成形装置１０により成形されるガラスリボン１５は、図７（ａ）に示すように、幅方向の両端部である耳部１５ａに至るまで均一な厚みであることが好ましい。しかしながら、特許文献１に記載のガラス成形装置１０では、ガラス成形装置１０の先端部分（下端部分）の溶融ガラスの粘度が例えば５０，０００Ｐａ・ｓ（１，１００℃）程度である場合には、図７（ｂ）に示すように、耳部１５ａがガラスリボンの長手方向に波打ちながら二叉状に開いてしまうことがある。このように耳部１５ａが開いてしまうと、ガラスリボン１５の形状不良が生じたり、または割れの原因となって連続操業に支障をきたすおそれがある。   As shown in FIG. 7A, the glass ribbon 15 formed by the glass forming apparatus 10 preferably has a uniform thickness up to the ear portions 15a that are both ends in the width direction. However, in the glass forming apparatus 10 described in Patent Document 1, when the viscosity of the molten glass at the tip portion (lower end portion) of the glass forming apparatus 10 is, for example, about 50,000 Pa · s (1,100 ° C.), As shown in FIG.7 (b), the ear | edge part 15a may open in a bifurcated shape, wavy in the longitudinal direction of a glass ribbon. Thus, if the ear | edge part 15a opens, there exists a possibility that the shape defect of the glass ribbon 15 may arise or it may cause a crack, and may interfere with a continuous operation.

これを防止するためには、ガラス成形装置１０の先端部分の溶融ガラスの粘度を例えば４，０００Ｐａ・ｓ（１，２００℃）程度と低くして溶融ガラスの流動性を向上させることが効果的であるが、このように溶融ガラスの粘度を下げるために溶融ガラスの温度を上げてしまうと、主に耐火煉瓦で構成された高価なガラス成形装置１０の寿命が低下することになる。   In order to prevent this, it is effective to improve the fluidity of the molten glass by reducing the viscosity of the molten glass at the tip of the glass forming apparatus 10 to about 4,000 Pa · s (1,200 ° C.), for example. However, if the temperature of the molten glass is raised in order to lower the viscosity of the molten glass in this way, the lifetime of the expensive glass forming apparatus 10 mainly composed of refractory bricks is reduced.

本発明は、このような事情に鑑み、溶融ガラスの粘度が相対的に高くても耳部の形状が安定したガラスリボンを成形することができるガラス成形装置を提供することを目的とする。   In view of such circumstances, an object of the present invention is to provide a glass forming apparatus capable of forming a glass ribbon in which the shape of the ear portion is stable even when the viscosity of the molten glass is relatively high.

本発明の発明者は、前記目的を達成するためにガイドの形状に着目し、ガイドの形状を工夫することにより前記のような耳部の開きを抑制できるのではないかと考えた。すなわち、特許文献１に記載されたガラス成形装置１０では、図６に示すようにガイド１２が矩形状の輪郭を有しており、その下端部がフラットになっているので、溶融ガラスがガイドに接触した状態のまま本体から離れることになる。そこで、本発明の発明者は、これを改善することを思い付いた。   The inventor of the present invention pays attention to the shape of the guide in order to achieve the object, and thought that the opening of the ear portion as described above can be suppressed by devising the shape of the guide. That is, in the glass forming apparatus 10 described in Patent Document 1, since the guide 12 has a rectangular outline as shown in FIG. 6 and the lower end thereof is flat, the molten glass serves as the guide. It will leave the main body in contact. Thus, the inventor of the present invention has come up with an improvement.

本発明は、このような観点からなされたものであり、溶融ガラスが供給される供給溝が形成された上面、および前記供給溝から前記上面に沿って当該供給溝の両側に溢れ出し、前記上面の両端部から流れ落ちる溶融ガラスを誘導して融合させる一対の壁面を有する本体と、互いに対向するように前記本体から周囲に張り出し、前記一対の壁面に沿って流下する溶融ガラスの幅を規制する一対のガイドと、を備え、前記一対のガイドのそれぞれは、互いに対向する方向から見たときに、前記一対の壁面の下端部同士が交わって形成される稜線上の点を頂点とする、前記本体よりも大きな角度で下向きに尖った輪郭を有している、ガラス成形装置を提供する。 The present invention has been made from such a viewpoint, and an upper surface on which a supply groove to which molten glass is supplied is formed, and overflows from the supply groove to both sides of the supply groove along the upper surface. A body having a pair of wall surfaces for inducing and fusing the molten glass flowing down from both ends of the glass, and a pair for regulating the width of the molten glass projecting from the body so as to face each other and flowing down along the pair of wall surfaces Each of the pair of guides , the main body having a vertex on a ridge line formed by the lower ends of the pair of wall surfaces intersecting each other when viewed from a direction facing each other. A glass forming apparatus is provided having a downwardly sharpened profile at a larger angle .

前記の構成によれば、ガイドが下向きに尖った輪郭を有しており、その頂点が一対の壁面の下端部同士が交わって形成される稜線上に位置しているので、ガイドに接する部分の溶融ガラスは、ガイドとの接触量を減らしながら前記の稜線に向かって流れ、最終的には接触量がゼロになった状態で本体から離れるようになる。このため、溶融ガラスの粘度が相対的に高くても、耳部の形状が安定したガラスリボンを成形することができる。   According to the above configuration, the guide has a downwardly sharp outline, and the apex thereof is located on the ridge line formed by the lower ends of the pair of wall surfaces intersecting each other. The molten glass flows toward the ridge line while reducing the amount of contact with the guide, and finally leaves the main body in a state where the amount of contact becomes zero. For this reason, even if the viscosity of the molten glass is relatively high, a glass ribbon having a stable shape of the ear portion can be formed.

本発明の一実施形態に係る板ガラス成形装置を示す正面図である。It is a front view which shows the plate glass shaping | molding apparatus which concerns on one Embodiment of this invention. 図１の板ガラス成形装置を示す斜視図である。It is a perspective view which shows the plate glass shaping | molding apparatus of FIG. 図１の板ガラス成形装置の側面断面図である。It is side surface sectional drawing of the plate glass shaping | molding apparatus of FIG. （ａ）は図３の要部拡大図、（ｂ）は従来のガラス成形装置の要部拡大断面図である。(A) is a principal part enlarged view of FIG. 3, (b) is a principal part expanded sectional view of the conventional glass forming apparatus. （ａ）〜（ｃ）は変形例の板ガラス成形装置の側面断面図である。(A)-(c) is side surface sectional drawing of the plate glass shaping | molding apparatus of a modification. 従来のガラス成形装置を示す斜視図である。It is a perspective view which shows the conventional glass forming apparatus. （ａ）は正常な形状のガラスリボンの断面図、（ｂ）は耳部が形状不良となったガラスリボンの断面図である。(A) is sectional drawing of the glass ribbon of a normal shape, (b) is sectional drawing of the glass ribbon from which the ear | edge part became a shape defect.

以下、本発明を実施するための最良の形態について、図面を参照しながら説明する。なお、以下の説明は本発明の一例に関するものであり、本発明はこれらによって限定されるものではない。   The best mode for carrying out the present invention will be described below with reference to the drawings. The following description relates to an example of the present invention, and the present invention is not limited to these.

図１および図２に示すように、本発明の一実施形態に係るガラス成形装置１は、水平面上の一方向に延びる本体２と、この本体２に固定された一対のガイド３とを備えている。なお、本明細書では、説明の便宜のために、本体２の延びる方向（図１では左右方向）を前後方向、これと直交する水平方向を左右方向といい、特に図１の左側を前方、図１の右側を後方という。   As shown in FIGS. 1 and 2, a glass forming apparatus 1 according to an embodiment of the present invention includes a main body 2 extending in one direction on a horizontal plane and a pair of guides 3 fixed to the main body 2. Yes. In the present specification, for convenience of explanation, the direction in which the main body 2 extends (the left-right direction in FIG. 1) is referred to as the front-rear direction, and the horizontal direction perpendicular thereto is referred to as the left-right direction. The right side of FIG.

本体２は、下向きに尖る五角形楔状（幅狭のホームベース状）の断面形状となっており、水平面と平行な長方形状の上面２１と、この上面２１の左右方向の両端部から下方に向かう一対の壁面２３とを有している。なお、上面２１は、水平面と平行である必要はなく、例えば前方に向かって前下がりの傾斜面または曲面となっていてもよい。   The main body 2 has a pentagonal wedge-shaped (narrow home base shape) cross-sectional shape that is pointed downward, a rectangular upper surface 21 parallel to the horizontal surface, and a pair of downwards from both left and right ends of the upper surface 21. Wall surface 23. The upper surface 21 does not need to be parallel to the horizontal plane, and may be, for example, an inclined surface or a curved surface that descends forward toward the front.

上面２１には、前後方向に延びる供給溝２２が形成されている。この供給溝２２の長さは、上面２１の前後両端部を少し残す程度に設定されていて、供給溝２２の開口２２ａは上面２１よりも一回り小さな長方形状をなしている。また、供給溝２２の底面２２ｂは、前方に向かって上り勾配の傾斜面となっている。なお、底面２２ｂは前方に向かって湾曲しながら上る曲面となっていてもよい。また、供給溝２２は底面２２ｂを有する断面コ字状のものである必要はなく、例えば断面Ｖ字状のものであってもよい。   A supply groove 22 extending in the front-rear direction is formed on the upper surface 21. The length of the supply groove 22 is set such that the front and rear end portions of the upper surface 21 are slightly left, and the opening 22 a of the supply groove 22 has a rectangular shape that is slightly smaller than the upper surface 21. Further, the bottom surface 22b of the supply groove 22 is an inclined surface having an upward slope toward the front. The bottom surface 22b may be a curved surface that rises while curving forward. Further, the supply groove 22 does not need to have a U-shaped cross section having the bottom surface 22b, and may have, for example, a V-shaped cross section.

供給溝２２には、本体２の後方から図示しない供給管を通じて溶融ガラス５が供給されるようになっている。そして、図示しない供給管から供給溝２２内に溶融ガラス５が供給されると、溶融ガラス５は供給溝２２内を前方に向かって流れながら、供給溝２２から上面２１に沿って左右両側に溢れ出し、上面２１の左右両端部から流れ落ちるようになる。   The molten glass 5 is supplied to the supply groove 22 from the rear of the main body 2 through a supply pipe (not shown). When the molten glass 5 is supplied into the supply groove 22 from a supply pipe (not shown), the molten glass 5 overflows from the supply groove 22 to the left and right sides along the upper surface 21 while flowing forward in the supply groove 22. It flows out from the left and right ends of the upper surface 21.

一対の壁面２３は、上面２１の左右両端部から流れ落ちる溶融ガラス５を誘導して融合させるものであり、それらの下端部同士が交わることにより前後方向に延びる稜線２４が形成されている。具体的に、一対の壁面２３のそれぞれは、上面２１の左端部または右端部から垂直に垂れ下がる垂直面２３ａと、この垂直面２３ａの下端部から互いに近づくように内向きに傾斜する傾斜面２３ｂとからなっている。そして、上面２１の左右両端部から流れ落ちる溶融ガラス５は、それぞれ壁面２３に沿って流下し、稜線２４の下方で融合する。これにより帯状のガラスリボン５０が連続して成形される。   The pair of wall surfaces 23 guide and fuse the molten glass 5 flowing down from both left and right end portions of the upper surface 21, and a ridge line 24 extending in the front-rear direction is formed by their lower end portions intersecting each other. Specifically, each of the pair of wall surfaces 23 includes a vertical surface 23a that hangs vertically from the left end portion or the right end portion of the upper surface 21, and an inclined surface 23b inclined inward so as to approach each other from the lower end portion of the vertical surface 23a. It is made up of. And the molten glass 5 which flows down from the right and left both ends of the upper surface 21 flows down along the wall surface 23, and unites below the ridgeline 24. Thereby, the strip-shaped glass ribbon 50 is continuously formed.

一対のガイド３は、前後方向で互いに対向し、両壁面２３に沿って流下する溶融ガラス５の幅を規制する、前後方向に扁平な板状のものである。一対のガイド３は、それらの内側面（他方のガイド３側を向く面）３ａが供給溝２２の開口２２ａにおける前後方向の短辺と合致する位置に配置されている。また、一対のガイド３のそれぞれは、図３に示すように前後方向から見たときに、壁面２３同士が交わる稜線２４上の点を頂点とする、本体２よりも大きな角度で下向きに尖った輪郭を有している。すなわち、各ガイド３の下向きに尖る先端３３は、稜線２４上に位置している。本実施形態では、各ガイド３の輪郭は、上側の３辺が互いに垂直に交わり、下側の４辺が斜めを向く、左右対称な七角形状をなしている。
The pair of guides 3 are flat plate-like ones in the front-rear direction that face each other in the front-rear direction and restrict the width of the molten glass 5 that flows down along both wall surfaces 23. The pair of guides 3 are arranged at positions where their inner side surfaces (surfaces facing the other guide 3 side) 3 a coincide with the short sides in the front-rear direction of the opening 22 a of the supply groove 22. Each of the pair of guides 3 is pointed downward at a larger angle than the main body 2 with the point on the ridge line 24 where the wall surfaces 23 meet each other as a vertex when viewed from the front-rear direction as shown in FIG. It has a contour. That is, the tip 33 pointed downward in each guide 3 is located on the ridge line 24. In this embodiment, the outline of each guide 3 has a left-right symmetric heptagon shape in which the upper three sides intersect perpendicularly and the lower four sides are inclined.

より詳しくは、各ガイド３は、一対の壁面２３のそれぞれに沿って上下方向に延びる縦ガイド部３２と、本体２の上面２１上に位置し、縦ガイド部３２の上端部とつながる横ガイド部３１とを有している。さらに、縦ガイド部３２は、垂直面２３ａに沿う垂直部３２ａと、傾斜面２３ｂに沿う傾斜部３２ｂとを含んでいる。そして、傾斜部３２ｂの下部の所定領域（先端３３から当該傾斜部３２ｂの１／３程度）が稜線２４に向かって尖っていて、縦ガイド部３２ｂが下方に向かって先細りとなっている。   More specifically, each guide 3 includes a vertical guide portion 32 extending in the vertical direction along each of the pair of wall surfaces 23, and a horizontal guide portion located on the upper surface 21 of the main body 2 and connected to the upper end portion of the vertical guide portion 32. 31. Further, the vertical guide portion 32 includes a vertical portion 32a along the vertical surface 23a and an inclined portion 32b along the inclined surface 23b. And the predetermined area | region (about 1/3 of the said inclination part 32b from the front-end | tip 33) of the lower part of the inclination part 32b is sharpened toward the ridgeline 24, and the vertical guide part 32b is tapering downward.

次に、本実施形態のガラス成形装置１の作用を説明する。   Next, the operation of the glass forming apparatus 1 of the present embodiment will be described.

まず、比較のために、図６に示す従来のガラス成形装置１０の作用について、図４（ｂ）を参照して説明する。従来のガラス成形装置１０では、ガイド１２の下端部１２ａがフラットになっているので、溶融ガラスがガイド１２に接触した状態のまま本体１１から離れることになる。別の見方をすれば、ガイド１２に接する部分の溶融ガラスは、壁面１１ａだけでなくガイド１２を伝って流下するようになり、図４（ｂ）中に矢印ｂで示すように流下する方向が壁面１１ａに沿った方向ではなくそれから少し開いた方向になる。これにより、ガイド１２に接する部分の溶融ガラスの軌跡Ｌ2は、ガラス成形装置１０の中央部での軌跡Ｌ1よりも開いてしまう。 First, for comparison, the operation of the conventional glass forming apparatus 10 shown in FIG. 6 will be described with reference to FIG. In the conventional glass forming apparatus 10, since the lower end portion 12 a of the guide 12 is flat, the molten glass leaves the main body 11 while being in contact with the guide 12. From another viewpoint, the molten glass in the portion in contact with the guide 12 flows down not only through the wall surface 11a but also through the guide 12, and the direction of flowing down as shown by the arrow b in FIG. It is not a direction along the wall surface 11a but a direction slightly opened from it. Thus, the locus L 2 of the molten glass portion in contact with the guide 12, will open than the locus L 1 of the central portion of the glass forming apparatus 10.

これに対し、本実施形態のガラス成形装置１では、図４（ａ）に示すように、下向きに尖るガイド３の先端３３が稜線２４上に位置しているので、ガイドに接する部分の溶融ガラス５は、ガイド３との接触量を減らしながら稜線２４に向かって流れるようになる。すなわち、ガイド３に接する部分の溶融ガラス５は、ガイド３の傾斜部３２ｂを伝って流下することにより、図４（ａ）中に矢印ａで示すように稜線２４に向かって収束させられるようになる。そして、ガイド３に接する部分の溶融ガラス５は、最終的にはガイド３との接触量がゼロになった状態で本体２から離れる。このため、溶融ガラス５の粘度が例えば１００，０００Ｐａ・ｓ（１，０５０℃）程度と相対的に高くても、図７（ａ）に示すように耳部５０ａの形状が安定したガラスリボン５０を成形することができる。   On the other hand, in the glass forming apparatus 1 of the present embodiment, as shown in FIG. 4A, the tip 33 of the guide 3 that is pointed downward is positioned on the ridge line 24. 5 flows toward the ridgeline 24 while reducing the amount of contact with the guide 3. That is, the molten glass 5 in contact with the guide 3 flows down along the inclined portion 32b of the guide 3 so as to be converged toward the ridge line 24 as shown by an arrow a in FIG. Become. And the molten glass 5 of the part which contact | connects the guide 3 leaves | separates from the main body 2 in the state where the contact amount with the guide 3 became zero finally. For this reason, even if the viscosity of the molten glass 5 is relatively high, for example, about 100,000 Pa · s (1,050 ° C.), the glass ribbon 50 in which the shape of the ear portion 50a is stable as shown in FIG. Can be molded.

なお、前記実施形態では、前後方向から見たときのガイド３の輪郭が七角形状になっているが、ガイド３の輪郭は、稜線２４上の点を頂点とする下向きに尖ったものであればよく、特に限定されるものではない。例えば図５（ａ）に示すように、傾斜部３２ｂの全体が稜線２４に向かって尖っていて、ガイド３の輪郭が五角形状になっていてもよい。   In the above-described embodiment, the outline of the guide 3 when viewed from the front-rear direction is a heptagon. There is no particular limitation. For example, as shown in FIG. 5A, the entire inclined portion 32b may be sharpened toward the ridgeline 24, and the outline of the guide 3 may be a pentagon.

また、傾斜部３２ｂの下部または全体が稜線２４に向かって尖る形状は、鋭利な三角形状である必要はなく、例えば図５（ｂ）に示すように、外側の辺が円弧状を描いていてもよい。   Further, the shape in which the lower part or the whole of the inclined part 32b is pointed toward the ridge line 24 does not need to be a sharp triangular shape. For example, as shown in FIG. 5B, the outer side has an arc shape. Also good.

さらに、縦ガイド部３２ｂは、例えば図５（ｃ）に示すように、垂直部３２ａから傾斜部３２ｂにかけて連続する曲線を描きながら下方に向かって先細りとなっていてもよい。   Further, as shown in FIG. 5C, for example, the vertical guide portion 32b may be tapered downward while drawing a continuous curve from the vertical portion 32a to the inclined portion 32b.

また、ガイド部３は、前後方向に扁平な板状のものである必要はなく、内側面３ａのうち壁面２３と交わる部分が壁面２３と直交するものであればよい。例えば、ガイド部３は、図６に示す従来のガラス成形装置１０と同様に横ガイド部３１の中央部が外側に張り出す形状となっていてもよいし、あるいは外側面が外側に膨らむような三次元的な形状となっていてもよい。   Moreover, the guide part 3 does not need to be a flat plate-like thing in the front-back direction, and the part which cross | intersects the wall surface 23 among the inner surface 3a should just be orthogonal to the wall surface 23. FIG. For example, the guide portion 3 may have a shape in which the central portion of the lateral guide portion 31 projects outwards as in the conventional glass forming apparatus 10 shown in FIG. 6, or the outer surface swells outward. It may be a three-dimensional shape.

本発明は、ＦＰＤガラス基板用の板ガラスを製造する際に用いられるガラス成形装置に特に好適である。   The present invention is particularly suitable for a glass forming apparatus used when producing a plate glass for an FPD glass substrate.

１ ガラス成形装置
２ 本体
２１ 上面
２２ 供給溝
２３ 壁面
２３ａ 垂直面
２３ｂ 傾斜面
２４ 稜線
３ ガイド
３１ 横ガイド部
３２ 縦ガイド部
３２ａ 垂直部
３２ｂ 傾斜部
５ 溶融ガラス
５０ ガラスリボン
５０ａ 耳部 DESCRIPTION OF SYMBOLS 1 Glass forming apparatus 2 Main body 21 Upper surface 22 Supply groove 23 Wall surface 23a Vertical surface 23b Inclined surface 24 Ridge line 3 Guide 31 Horizontal guide part 32 Vertical guide part 32a Vertical part 32b Inclined part 5 Molten glass 50 Glass ribbon 50a Ear part

Claims (3)

溶融ガラスが供給される供給溝が形成された上面、および前記供給溝から前記上面に沿って当該供給溝の両側に溢れ出し、前記上面の両端部から流れ落ちる溶融ガラスを誘導して融合させる一対の壁面を有する本体と、
互いに対向するように前記本体から周囲に張り出し、前記一対の壁面に沿って流下する溶融ガラスの幅を規制する一対のガイドと、を備え、
前記一対のガイドのそれぞれは、互いに対向する方向から見たときに、前記一対の壁面の下端部同士が交わって形成される稜線上の点を頂点とする、前記本体よりも大きな角度で下向きに尖った輪郭を有している、ガラス成形装置。 A pair of upper surfaces formed with supply grooves to which molten glass is supplied, and a pair of molten glass that overflows from both sides of the supply grooves along the upper surface and flows from both ends of the upper surface to induce and fuse the molten glass. A body having a wall;
A pair of guides that project from the main body so as to face each other and regulate the width of the molten glass flowing down along the pair of wall surfaces,
Each of the pair of guides faces downward at a larger angle than the main body, with the point on the ridge line formed by the lower ends of the pair of wall surfaces intersecting each other when viewed from the opposite direction. A glass forming apparatus having a sharp outline. 前記一対のガイドのそれぞれは、前記一対の壁面のそれぞれに沿って上下方向に延びる縦ガイド部と、前記本体の前記上面上に位置し、前記縦ガイド部の上端部とつながる横ガイド部とを有し、前記縦ガイド部が下方に向かって先細りとなっている、請求項１に記載のガラス成形装置。   Each of the pair of guides includes a vertical guide portion extending in the vertical direction along each of the pair of wall surfaces, and a horizontal guide portion located on the upper surface of the main body and connected to the upper end portion of the vertical guide portion. The glass forming apparatus according to claim 1, wherein the vertical guide portion is tapered downward. 前記一対の壁面のそれぞれは、前記上面の端部から垂直に垂れ下がる垂直面と、この垂直面の下端部から傾斜する傾斜面とからなり、
前記縦ガイド部は、前記垂直面に沿う垂直部と、前記傾斜面に沿う傾斜部とを含み、前記傾斜部の下部の所定領域が前記稜線に向かって尖っている、請求項２に記載のガラス成形装置。 Each of the pair of wall surfaces is composed of a vertical surface that hangs vertically from an end portion of the upper surface, and an inclined surface that is inclined from a lower end portion of the vertical surface,
The vertical guide portion includes a vertical portion along the vertical surface and an inclined portion along the inclined surface, and a predetermined region below the inclined portion is pointed toward the ridgeline. Glass forming equipment.
JP2009034698A 2009-02-18 2009-02-18 Glass forming equipment Active JP4955717B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009034698A JP4955717B2 (en) 2009-02-18 2009-02-18 Glass forming equipment
SG201000939-7A SG164336A1 (en) 2009-02-18 2010-02-11 Glass forming device
TW099104637A TWI488817B (en) 2009-02-18 2010-02-12 Glass forming device
KR1020100014757A KR101639816B1 (en) 2009-02-18 2010-02-18 Glass forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009034698A JP4955717B2 (en) 2009-02-18 2009-02-18 Glass forming equipment

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2011129347A Division JP5405526B2 (en) 2011-06-09 2011-06-09 Sheet glass manufacturing method and glass forming apparatus

Publications (2)

Publication Number Publication Date
JP2010189220A JP2010189220A (en) 2010-09-02
JP4955717B2 true JP4955717B2 (en) 2012-06-20

Family

ID=42758517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009034698A Active JP4955717B2 (en) 2009-02-18 2009-02-18 Glass forming equipment

Country Status (4)

Country Link
JP (1) JP4955717B2 (en)
KR (1) KR101639816B1 (en)
SG (1) SG164336A1 (en)
TW (1) TWI488817B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013005409A1 (en) * 2011-07-01 2013-01-10 ＡｖａｎＳｔｒａｔｅ株式会社 Method for manufacturing glass sheet
JP2013216533A (en) * 2012-04-06 2013-10-24 Avanstrate Inc Method and apparatus for manufacturing glass sheet
JP6052624B2 (en) * 2012-08-24 2016-12-27 日本電気硝子株式会社 Sheet glass manufacturing apparatus and sheet glass manufacturing method
TW201439017A (en) * 2013-04-01 2014-10-16 Nippon Electric Glass Co Method of forming glass plate and device of forming glass plate
TW201718417A (en) * 2015-11-24 2017-06-01 康寧公司 Apparatus and method for forming a glass article

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09110443A (en) * 1995-10-24 1997-04-28 Nippon Electric Glass Co Ltd Apparatus for producing glass plate
JP4281107B2 (en) * 2003-04-16 2009-06-17 日本電気硝子株式会社 Sheet glass forming equipment
US20050268657A1 (en) * 2004-06-02 2005-12-08 Adamowicz John A Isopipe mass distribution for forming glass substrates
JP4655306B2 (en) * 2005-02-07 2011-03-23 日本電気硝子株式会社 Sheet glass forming apparatus and method
JP2006248855A (en) * 2005-03-11 2006-09-21 Nippon Electric Glass Co Ltd Formation apparatus for plate glass and method for forming plate glass
US20060236722A1 (en) * 2005-04-26 2006-10-26 Robert Delia Forming apparatus with extensions attached thereto used in a glass manufacturing system
JP5091396B2 (en) * 2005-10-24 2012-12-05 日本電気硝子株式会社 Refractory molded body equipped with sheet glass forming apparatus and sheet glass forming method
JP4673275B2 (en) * 2006-09-13 2011-04-20 田中貴金属工業株式会社 Method for producing sheet glass by fusion downdraw method
JP2009132595A (en) * 2007-10-29 2009-06-18 Nippon Electric Glass Co Ltd Refractory material for glass production, method for producing the same, glass melting furnace, and method for producing glass article
CN101279814B (en) * 2008-05-06 2010-06-02 陕西彩虹电子玻璃有限公司 Forming appliance for glass base plate of flat liquid crystal display
JP5005717B2 (en) * 2009-03-13 2012-08-22 ＡｖａｎＳｔｒａｔｅ株式会社 Glass plate manufacturing method and manufacturing apparatus

Also Published As

Publication number Publication date
JP2010189220A (en) 2010-09-02
SG164336A1 (en) 2010-09-29
TWI488817B (en) 2015-06-21
TW201034983A (en) 2010-10-01
KR101639816B1 (en) 2016-07-14
KR20100094423A (en) 2010-08-26

Similar Documents

Publication Publication Date Title
JP4955717B2 (en) Glass forming equipment
JP5105522B2 (en) Isopipe mass distribution for forming glass substrates
US10570046B2 (en) Method of manufacturing glass sheet
JP5724552B2 (en) Thin glass manufacturing equipment
JP6331148B2 (en) Sheet glass forming method and sheet glass forming apparatus
JP5405526B2 (en) Sheet glass manufacturing method and glass forming apparatus
JP4990229B2 (en) Sheet glass manufacturing apparatus and sheet glass manufacturing method
KR101266699B1 (en) Glass sheet production device, glass sheet production method, and molded body
JP6489783B2 (en) Glass substrate manufacturing method and glass substrate manufacturing apparatus
JP2013184877A (en) Apparatus and method for forming thin sheet glass
JP6044843B2 (en) Sheet glass molded body, sheet glass molded body manufacturing method, sheet glass manufacturing apparatus, and sheet glass manufacturing method
JP5850332B2 (en) Thin glass forming apparatus and method
US10377654B2 (en) Apparatus and method of manufacturing composite glass articles
JP7022304B2 (en) Glass article manufacturing equipment and manufacturing method
JP6691690B2 (en) Sheet glass manufacturing apparatus and manufacturing method thereof
KR101906642B1 (en) Isolator for use in separating glass sheets from a glass ribbon
JP2014189421A (en) Scribe line processing device, scribe line processing method, and method of manufacturing plate glass

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110408

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110412

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110609

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

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120313

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

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120315

R150 Certificate of patent or registration of utility model

Ref document number: 4955717

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

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

Free format text: PAYMENT UNTIL: 20150323

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250