JP3093000B2 - Glass plate manufacturing equipment - Google Patents
Glass plate manufacturing equipmentInfo
- Publication number
- JP3093000B2 JP3093000B2 JP03286906A JP28690691A JP3093000B2 JP 3093000 B2 JP3093000 B2 JP 3093000B2 JP 03286906 A JP03286906 A JP 03286906A JP 28690691 A JP28690691 A JP 28690691A JP 3093000 B2 JP3093000 B2 JP 3093000B2
- Authority
- JP
- Japan
- Prior art keywords
- glass plate
- glass
- rollers
- plate
- roller shaft
- 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.)
- Expired - Lifetime
Links
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
- C03B17/068—Means for providing the drawing force, e.g. traction or draw rollers
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガラス板の製造装置に
係り、特にガラス板を引下げ或いは引き上げてガラス板
を製造する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a glass sheet, and more particularly to an apparatus for manufacturing a glass sheet by pulling down or pulling up a glass sheet.
【０００２】[0002]
【従来の技術】従来、ローラによりガラス板を挟持し搬
送するガラス板の製造装置としては、図９および図１０
に示すような装置がある（例えば、特開昭６４−８３５
１号公報参照）。2. Description of the Related Art Conventionally, as an apparatus for manufacturing a glass sheet for nipping and conveying a glass sheet by rollers, FIGS.
(For example, Japanese Patent Application Laid-Open No. 64-835).
No. 1).
【０００３】図９及び図１０において、１は耐熱レンガ
からなる炉壁で、炉内の上方には成形体２が設けられて
いる。この成形体２は、その頂部には溶融ガラス３を収
容する凹部２ａが形成され、その幅広の表裏面は下方に
向けて互いに近接してその横断面がほぼくさび形を呈す
る。この成形体２は、その表面は白金又は白金合金によ
り被覆され、その内部には耐火材（例えば発泡アルミナ
や電鋳レンガ等）が充填されている。In FIGS. 9 and 10, reference numeral 1 denotes a furnace wall made of a heat-resistant brick, and a molded body 2 is provided above the furnace. A concave portion 2a for accommodating the molten glass 3 is formed at the top of the molded body 2, and its wide front and back surfaces are close to each other downward and have a substantially wedge-shaped cross section. The surface of the molded body 2 is coated with platinum or a platinum alloy, and the inside thereof is filled with a refractory material (for example, foamed alumina or electroformed brick).
【０００４】成形体２の凹部２ａには、図９に示すよう
に水平に配置された溶融ガラスの供給管４が接続されて
いる。この溶融ガラス供給管４から凹部２ａに供給され
た溶融ガラス３は凹部２ａの上側のスリット状の開口か
ら溢れ、成形体２の下端部で合流する。合流した溶融ガ
ラス３はガラスの粘性が低い状態（温度の高い状態）で
成形されてガラス板８となり、回転するローラ５５〜５
７により挟持され搬送されて、ガラス板８が製造され
る。[0004] A supply pipe 4 for molten glass, which is horizontally arranged as shown in FIG. 9, is connected to the concave portion 2a of the molded body 2. The molten glass 3 supplied from the molten glass supply pipe 4 to the concave portion 2 a overflows from the slit-shaped opening on the upper side of the concave portion 2 a and joins at the lower end of the molded body 2. The merged molten glass 3 is formed in a state in which the viscosity of the glass is low (a state in which the temperature is high) to form a glass plate 8 and the rotating rollers 55 to 5
The glass plate 8 is manufactured by being pinched and transported by 7.
【０００５】成形体２の下方には少なくとも一対のロー
ラ５５ａ，５５ｂ；５６ａ，５６ｂ；５７ａ，５７ｂが
設けられ、それぞれのローラ軸９は駆動装置１２に接続
されている。なお、図９ではローラ５６ａ及び５７ａの
ローラ軸の一部及び駆動装置は省略してある。At least a pair of rollers 55a, 55b; 56a, 56b; 57a, 57b are provided below the molded body 2, and each roller shaft 9 is connected to the drive unit 12. In FIG. 9, a part of the roller shafts of the rollers 56a and 57a and a driving device are omitted.
【０００６】このとき使用するローラ５５〜５７は、図
９に示したように、ガラス板８の側縁部８ａ、８ｂより
わずかに内側に最大直径部分を有し、ガラス板８の中央
部に対応する部位では最少直径部分を有するものであ
る。したがって、各ローラ５５〜５７の最大直径部分で
ガラス板８を挟んで搬送し、ローラのその他の部分がガ
ラスと接触しない構造となっている。The rollers 55 to 57 used at this time have a maximum diameter portion slightly inside the side edges 8a and 8b of the glass plate 8 as shown in FIG. The corresponding portion has a minimum diameter portion. Therefore, the glass plate 8 is conveyed between the maximum diameter portions of the rollers 55 to 57, and the other portions of the rollers do not come into contact with the glass.
【０００７】[0007]
【発明が解決しようとする課題】前記ガラス板の製造装
置では、成形体２の凹部２ａの上側のスリット状の開口
から溢れた溶融ガラス３は粘性が低い状態（温度の高い
状態）で成形体２の下端部で合流し、ガラス板８が成形
されるため、ローラ５５〜５７でガラス板８を挟持して
搬送する段階でもガラス板の温度は、ガラスの種類にも
よるが、高いところでは６００℃以上になる。また、ガ
ラス板８に大きな熱歪みを与えないために、これらのロ
ーラ５５〜５７は炉壁１に囲まれ、ローラ付近の温度は
比較的高い状態に保たれている。そのため、ローラ５５
〜５７自身の温度が高くなり、ローラ軸９が変形すると
いう問題が生じる。In the apparatus for manufacturing a glass sheet, the molten glass 3 overflowing from the slit-shaped opening above the concave portion 2a of the molded body 2 has a low viscosity (high temperature). Since the glass plate 8 is formed at the lower end of the glass plate 2 and the glass plate 8 is formed, the temperature of the glass plate at the stage where the glass plate 8 is sandwiched and conveyed by the rollers 55 to 57 depends on the type of glass. It will be 600 ° C or higher. In order not to give a large thermal distortion to the glass plate 8, these rollers 55 to 57 are surrounded by the furnace wall 1, and the temperature around the rollers is kept relatively high. Therefore, the roller 55
To 57 itself, and the roller shaft 9 is deformed.
【０００８】そこで、ローラ軸９の変形を押えるため、
冷却媒体を例えば図９の矢印Ｙに示すように流してロー
ラ軸９を冷却する必要が生じる。冷却媒体としては液体
及びガスが考えられるが、単位時間当りのガラス板８の
製造量（引き抜き量）が少ない場合、つまり、ガラス板
の厚さが薄い場合やガラス板８の搬送速度が遅い場合
（例えば、ガラス板８の厚さが１．１ｍｍでガラス板８
の搬送速度が５０ｍ／ｈ以下の場合）、液体を用いると
ローラ軸９が冷却され過ぎ、その影響によりガラス板８
が必要以上に冷却され、熱歪みによりガラス板８が割れ
たりすることがあるので、冷却媒体としてはガスが用い
られていた。In order to suppress the deformation of the roller shaft 9,
For example, it is necessary to flow a cooling medium as shown by an arrow Y in FIG. 9 to cool the roller shaft 9. Liquid and gas can be considered as the cooling medium, but when the production amount (drawing amount) of the glass plate 8 per unit time is small, that is, when the thickness of the glass plate is thin or the conveyance speed of the glass plate 8 is low. (For example, when the thickness of the glass plate 8 is 1.1 mm and the glass plate 8
When the liquid is used, the roller shaft 9 is excessively cooled, and the influence of the liquid causes the glass plate 8 to be cooled.
Is cooled more than necessary, and the glass plate 8 may be broken due to thermal distortion. Therefore, a gas has been used as a cooling medium.
【０００９】ガスを冷却媒体とした場合でも、冷却媒体
がローラ軸９に入るときのガスの温度とローラ軸９から
出るときのガスの温度に差が生じ、この影響でガラス板
８の幅方向（図９の左右方向）に温度差が生じる。した
がってガラス板８に熱歪みが入り、ガラス板８の製造中
にガラス板８が湾曲したり、ガラス板８の変形が原因
で、ガラス板８がローラ５５〜５７の圧力を受けて割れ
たりするという欠点があった。Even when gas is used as the cooling medium, a difference occurs between the temperature of the gas when the cooling medium enters the roller shaft 9 and the temperature of the gas when the cooling medium exits the roller shaft 9. (The left-right direction in FIG. 9). Therefore, the glass plate 8 is subjected to thermal strain, and the glass plate 8 is bent during the manufacture of the glass plate 8, or the glass plate 8 is broken by the pressure of the rollers 55 to 57 due to the deformation of the glass plate 8. There was a disadvantage.
【００１０】したがって、本発明の目的は、上記欠点を
解決することであり、ローラ軸の冷却の影響をガラス板
に及ぼさないようなガラス板の製造装置を提供すること
である。Accordingly, an object of the present invention is to solve the above-mentioned drawbacks, and to provide an apparatus for manufacturing a glass sheet which does not exert an influence of cooling of a roller shaft on the glass sheet.
【００１１】[0011]
【課題を解決するための手段】本発明のガラス板の製造
装置は上記目的を達成するためになされたものであり、
炉内に設けられ、溶融ガラスを板状に成形してガラス板
とする成形体と、前記ガラス板を挟持し搬送する搬送手
段と、を備え、前記搬送手段は、ガラス板の各側縁部近
傍にそれぞれ設けられた一対のローラと、該ローラを保
持するローラ軸とを有し、該ローラ軸は片支持されてい
ることを特徴とする。The glass plate manufacturing apparatus of the present invention has been made to achieve the above object.
A molded body provided in a furnace and formed into a glass plate by forming molten glass into a plate shape, and a transport unit for sandwiching and transporting the glass plate, wherein the transport unit includes a side edge portion of the glass plate. It has a pair of rollers provided near each other, and a roller shaft for holding the rollers, wherein the roller shaft is supported in one piece.
【００１２】また、本発明においては、炉内には対流防
止板を設けることが好ましい。In the present invention, it is preferable to provide a convection prevention plate in the furnace.
【００１３】さらに、対流防止板はガラス板の適度な放
熱を促す材質であることが望ましく例えば、金属やセラ
ミックスを使用することができる。Further, the convection preventing plate is desirably made of a material which promotes appropriate heat radiation of the glass plate. For example, metal or ceramics can be used.
【００１４】[0014]
【作用】ガラスを搬送するためのローラをガラス板の側
縁部近傍に配置し、さらに該ローラを保持するローラ軸
を片支持しているので、炉壁内のローラを回転すること
によりガラス板を引下げ或いは引き上げて板ガラスを製
造しても、ローラの軸の冷却の影響を直接にはガラス板
に与にくく、特にガラス板の中央部には冷却の影響を及
ぼさない。A roller for conveying glass is arranged near the side edge of the glass plate, and a roller shaft for holding the roller is partially supported, so that the roller in the furnace wall is rotated to rotate the glass plate. Even if the sheet glass is manufactured by pulling down or pulling up, the influence of the cooling of the roller shaft is hardly exerted directly on the glass sheet, and the cooling effect is not particularly exerted on the central portion of the glass sheet.
【００１５】また、炉内に対流防止板を設けることによ
り、炉内に生じる熱対流を抑制することができる。ま
た、この対流防止板は、ガラス板からの熱を放射させる
放射板の作用も有する。Further, by providing a convection prevention plate in the furnace, thermal convection generated in the furnace can be suppressed. The convection prevention plate also has the function of a radiation plate for radiating heat from the glass plate.
【００１６】[0016]
【実施例】以下、本発明を実施例に基づいてさらに詳し
く説明するが、本発明はこれらの実施例に限定されるも
のではない。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.
【００１７】（実施例１）図１は本発明のガラス板の製
造装置の第１の実施例の正面断面図、図２は図１のＡ−
Ａ断面図である。(Embodiment 1) FIG. 1 is a front sectional view of a first embodiment of a glass sheet manufacturing apparatus according to the present invention, and FIG.
It is A sectional drawing.
【００１８】炉壁１は耐熱レンガからなり、炉内の上方
には成形体２が設けられている。この成形体２は、その
頂部には溶融ガラス３を収容する凹部２ａが形成され、
その幅広の表裏面２ｂ，２ｃは下方に向けて互いに近接
してその横断面がほぼくさび形を呈する。この成形体２
は、その表面は白金により被覆され、その内部には耐火
材（例えば発泡アルミナや電鋳レンガ等）が充填されて
いる。The furnace wall 1 is made of a heat-resistant brick, and a molded body 2 is provided above the furnace. The molded body 2 has a concave portion 2a for accommodating the molten glass 3 at the top thereof,
The wide front and back surfaces 2b and 2c are close to each other downward and have a substantially wedge-shaped cross section. This molded body 2
The surface is coated with platinum, and the inside is filled with a refractory material (for example, foamed alumina or electroformed brick).
【００１９】成形体２の凹部２ａは、溶融ガラス３の供
給管４に接続されている。The recess 2 a of the molded body 2 is connected to a supply pipe 4 for the molten glass 3.
【００２０】図１に示すように、成形体２の下方の正面
側には、複数個のローラ５〜７が設けられている。これ
らのローラは最上段の一対のローラ５ａ，５ｂ、２段目
の一対のローラ６ａ，６ｂ・・・最下段の一対のローラ
７ａ，７ｂというように複数段に渡り一対ずつ設けられ
ている。各段のローラ及びその関連部分はそれぞれ同じ
構成であるので、最上段のローラ５ａ，５ｂについての
み説明すると、各ローラ５ａ，５ｂは、従来のローラの
中央部分を切除して両側部分のみとして、ガラス板８の
側縁部８ａ，８ｂ近傍でのみガラス板８と接触するよう
な短いものである。すなわち、２つのローラ５ａ，５ｂ
は間隔をおいて配置され、各ローラ５ａ，５ｂは、ガラ
ス板８の中央側の端部５a1，５b1が自由端であり、反対
側の端部５a2，５b2がローラ軸９ａ，９ｂに固定されて
いる。このように、ローラ軸９ａ，９ｂは軸受１０ａ，
１０ｂに片支持されている。なお以上においては図１の
正面図に基づいてガラス板８の正面側に設けられている
ローラ等の構成について説明したが、図２に示すように
ローラ及びローラ軸は、ガラス板８の裏面側（図２の右
側）にも正面側と同様の配置で設けられている。また、
ローラ５ａ及び５ｃは、ガラス板８の側縁部８ａの近傍
でガラス板８を挟持している。同様にローラ５ｂ及び５
ｄも同様にガラス板８を挟持している。本実施例では、
ガラス板の裏面側のローラ５ｃ，５ｄのローラ軸９ｃ，
９ｄは軸受（図示せず）に片支持され、かつその端部が
モータ１２ａ，１２ｂに接続され、表面側のローラ５
ａ，５ｂのローラ軸９ａ，９ｂは、歯車１１ａ，１１ｂ
を介してモータ１２ａ，１２ｂに接続されている。As shown in FIG. 1, a plurality of rollers 5 to 7 are provided on the front side below the molded body 2. A pair of these rollers are provided over a plurality of stages, such as a pair of uppermost rollers 5a and 5b, a pair of second rollers 6a and 6b,..., And a pair of lowermost rollers 7a and 7b. Since the rollers at the respective stages and their related parts have the same configuration, only the uppermost rollers 5a and 5b will be described. Each of the rollers 5a and 5b is formed by cutting off the central part of the conventional roller and leaving only both side parts. It is short such that it contacts the glass plate 8 only in the vicinity of the side edges 8a and 8b of the glass plate 8. That is, the two rollers 5a, 5b
The rollers 5a, 5b are fixed at the ends 5a1, 5b1 on the center side of the glass plate 8, and the opposite ends 5a2, 5b2 are fixed to the roller shafts 9a, 9b. ing. Thus, the roller shafts 9a, 9b are connected to the bearings 10a,
It is supported on one side by 10b. In the above, the configuration of the rollers and the like provided on the front side of the glass plate 8 has been described based on the front view of FIG. 1. However, as shown in FIG. (The right side of FIG. 2) is also provided in the same arrangement as the front side. Also,
The rollers 5a and 5c sandwich the glass plate 8 near the side edge 8a of the glass plate 8. Similarly, rollers 5b and 5
Similarly, d sandwiches the glass plate 8. In this embodiment,
The roller shaft 9c of the rollers 5c and 5d on the back side of the glass plate,
9d is one-sided supported by a bearing (not shown), and its end is connected to the motors 12a and 12b.
The roller shafts 9a, 9b of the gears 11a, 11b
Are connected to the motors 12a and 12b.
【００２１】溶融ガラス３の供給管４から成形体２の凹
部２ａに、泡や異物を含まず、脈理のない均質な溶融ガ
ラス３が供給される。溶融ガラス３は凹部２ａの上側の
スリット状の開口から溢れ、分流して成形体２の表裏面
２ｂ，２ｃに沿って流下し、成形体２の下端部で合流す
る。合流した溶融ガラス３はガラスの粘性が低い状態
（温度の高い状態）、例えば７００℃で成形され、１枚
のガラス板８となり、ローラ５〜７によって挟持され、
例えば４０ｃｍ／ｍｉｎの速度で引下げられ、ガラス板
８が連続的に製造される。そして、ローラ５〜７の下方
の任意の位置で、例えばダイヤモンドカッター等によ
り、任意の長さに切断する。From the supply pipe 4 for the molten glass 3, a uniform molten glass 3 containing no bubbles or foreign matters and having no striae is supplied to the concave portion 2 a of the molded body 2. The molten glass 3 overflows from the slit-shaped opening on the upper side of the concave portion 2 a, splits, flows down along the front and back surfaces 2 b, 2 c of the molded body 2, and joins at the lower end of the molded body 2. The merged molten glass 3 is formed at a state where the viscosity of the glass is low (a state where the temperature is high), for example, 700 ° C., and becomes one glass plate 8, which is sandwiched by rollers 5 to 7.
For example, it is lowered at a speed of 40 cm / min, and the glass plate 8 is manufactured continuously. Then, at an arbitrary position below the rollers 5 to 7, the material is cut to an arbitrary length by, for example, a diamond cutter or the like.
【００２２】炉壁１内のローラ５〜７及びローラ軸９の
変形を防止するために、これらローラ５〜７及びローラ
軸９を冷却することができる。このため例えばパイプ状
のローラ軸９を用いて、パイプ内に冷却用のガスを流す
ことによりローラ軸９を冷却することができる。この場
合、パイプ内のガス通路の一端を閉じることができるの
で、ローラ軸９内に冷却用のガスを流してもガスはガラ
ス板８に触れることがない。したがって、冷却による影
響は直接にはガラス板８に及ばず、ガラス板８を急冷す
ることはない。また、各段のローラ（例えば最上段のロ
ーラ５ａとローラ５ｂ）はガラス板８の側縁部８ａ，８
ｂの近傍に設けられているので、ガラス板８の中央部を
含む主要部（有効幅）には冷却による影響を与えない。In order to prevent deformation of the rollers 5 to 7 and the roller shaft 9 in the furnace wall 1, the rollers 5 to 7 and the roller shaft 9 can be cooled. Therefore, for example, the roller shaft 9 can be cooled by using a pipe-shaped roller shaft 9 and flowing a cooling gas into the pipe. In this case, since one end of the gas passage in the pipe can be closed, the gas does not touch the glass plate 8 even if the cooling gas flows through the roller shaft 9. Therefore, the influence of the cooling does not directly affect the glass plate 8, and the glass plate 8 is not rapidly cooled. The rollers at each stage (for example, the uppermost roller 5a and the roller 5b) are connected to the side edges 8a, 8a of the glass plate 8.
Since it is provided in the vicinity of b, the main portion (effective width) including the central portion of the glass plate 8 is not affected by cooling.
【００２３】なお、ローラ５〜７の配置箇所をガラス板
８の側縁部８ａ，８ｂの近傍で、側縁部８ａ，８ｂより
わずかに内側とする理由は、ガラス板８の側縁部８ａ，
８ｂでは、中央部に比較してガラス板の厚みが厚くなる
ので、ガラス板８の側縁部８ａ，８ｂでガラス板８を挟
むとローラ５〜７が均一に摩耗せず、ガラス板８の搬送
速度も変化し、平面度に優れたガラス板８を製造できな
いからである。The reason for disposing the rollers 5 to 7 near the side edges 8a and 8b of the glass plate 8 and slightly inside the side edges 8a and 8b is that the side edges 8a and ,
8b, the thickness of the glass plate is larger than that of the central portion. Therefore, when the glass plate 8 is sandwiched between the side edges 8a and 8b of the glass plate 8, the rollers 5 to 7 do not wear uniformly, This is because the transfer speed also changes, and the glass plate 8 having excellent flatness cannot be manufactured.
【００２４】ローラ５〜７の材質としては、耐熱性があ
り、断熱性があり、ガラス板８を傷つけることが少ない
材料であればよく、例えばアスベストやセラミックファ
イバーを用いることができる。The material of the rollers 5 to 7 may be any material having heat resistance, heat insulation, and little damage to the glass plate 8. For example, asbestos or ceramic fiber can be used.
【００２５】以上説明した実施例の装置において、ロー
ラ軸９の外径を６０ｍｍ、内径を１０ｍｍとし、ローラ
５〜７の外径を１００ｍｍ、幅を５０ｍｍとし、ローラ
５〜７の中心部がガラス板８の側縁部８ａ，８ｂより約
８５ｍｍ内側でガラス板８と接触するように構成したも
のを用いて、中心部の厚さ１．１ｍｍのガラス板を製造
した。In the apparatus of the embodiment described above, the outer diameter of the roller shaft 9 is 60 mm, the inner diameter is 10 mm, the outer diameter of the rollers 5 to 7 is 100 mm, the width is 50 mm, and the center of the rollers 5 to 7 is glass. A glass plate having a thickness of 1.1 mm at the center portion was manufactured by using a material configured to be in contact with the glass plate 8 at a position approximately 85 mm inward from the side edges 8a and 8b of the plate 8.
【００２６】得られたガラスはガラス板の中央部分３０
０ｍｍ内での反り（ガラス板の中央部分３００ｍｍの両
端を結んだ線からの図２の左右方向のずれの量を３００
ｍｍで割った値）の最大値が、０．３％以下という、ガ
ラス板として優れたものであった。The glass obtained is the central part 30 of the glass plate.
2 warp within 0 mm (the amount of deviation in the left-right direction in FIG. 2 from the line connecting both ends of the central portion of the glass plate 300 mm is 300 mm).
(value divided by mm) was 0.3% or less, which was excellent as a glass plate.
【００２７】（実施例２）図３は本発明のガラス板の製
造装置の第２の実施例の正面断面図、図４は図３のＢ−
Ｂ断面図である。(Embodiment 2) FIG. 3 is a front sectional view of a second embodiment of the apparatus for manufacturing a glass sheet of the present invention, and FIG.
It is B sectional drawing.
【００２８】本実施例は、炉壁１内に対流防止板２０を
設けた点が第１の実施例と異なるのみで、他の点は同様
である。The present embodiment is different from the first embodiment only in that a convection preventing plate 20 is provided in the furnace wall 1, and the other points are the same.
【００２９】対流防止板２０は、成形体２と最上段のロ
ーラ５の間及び各段のローラ間すなわち最上段のローラ
５と２段目のローラ６の間、２段目のローラ６と３段目
のローラ（図示せず）の間・・・において、ガラス板８
の近傍でガラス板８の幅方向（図３の左右方向）に設け
られている。本実施例においては各対流防止板２０の図
３の左右方向の長さを、ローラ５ａ，５ｂの固定端側の
端面５a2，５b2間の距離とほぼ等しくしたものを用い
た。The convection prevention plate 20 is provided between the molded body 2 and the uppermost roller 5 and between the rollers of each stage, that is, between the uppermost roller 5 and the second roller 6 and the second stage rollers 6 and 3. Between the rollers (not shown) of the stage, the glass plate 8
Is provided in the width direction of the glass plate 8 (the left-right direction in FIG. 3). In this embodiment, the length of each convection prevention plate 20 in the left-right direction in FIG. 3 is substantially equal to the distance between the end surfaces 5a2 and 5b2 on the fixed end side of the rollers 5a and 5b.
【００３０】各対流防止板２０はそれぞれ４本の支持棒
２１により支持されており、各支持棒２１は炉壁１に図
４の左右方向に移動可能に設けられ、ガラス板８と対流
防止板２０との間の間隔を調節可能に構成されている。
これら対流防止板２０，２０により、炉壁１内の熱対流
を抑制し、ガラス板８の冷却を一様に行なうことができ
る。この対流防止板２０の材料は、対流を防止する作用
を有することが必要である。また、この対流防止板は、
ガラス板からの熱を放射させる放射板の作用も有し、こ
のため、対流防止板２０の材料は、熱を放出する作用を
も有する材料であることが好ましく、例えばステンレ
ス、アルミニウム等の金属製やＳｉＣ等のセラミックス
製の板等を用いることができる。本実施例においてはガ
ラス板８の正面側のみならず図４に示したようにガラス
板８の裏面側にも設けているが、ガラス板の厚さ、ガラ
ス板の搬送速度等の条件により、ガラス板８の冷却を比
較的早く行ないたい場合には、正面側のみ或いは裏面側
のみに設けることができる。なお、ガラス板８の有効幅
を大きくするためには対流防止板２０の水平方向の幅を
大きくした方がよい。Each convection prevention plate 20 is supported by four support rods 21. Each support rod 21 is provided on the furnace wall 1 so as to be movable in the left-right direction of FIG. 20 is adjustable.
By these convection preventing plates 20, 20, thermal convection in the furnace wall 1 can be suppressed, and the glass plate 8 can be uniformly cooled. It is necessary that the material of the convection preventing plate 20 has an action of preventing convection. Also, this convection prevention plate
It also has the function of a radiation plate that radiates heat from the glass plate, and therefore, the material of the convection prevention plate 20 is preferably a material that also has a function of releasing heat, for example, a metal material such as stainless steel or aluminum. And a plate made of ceramics such as SiC. In the present embodiment, it is provided not only on the front side of the glass sheet 8 but also on the back side of the glass sheet 8 as shown in FIG. 4, but depending on conditions such as the thickness of the glass sheet and the conveying speed of the glass sheet. If it is desired to cool the glass plate 8 relatively quickly, it can be provided only on the front side or only on the back side. In order to increase the effective width of the glass plate 8, it is preferable to increase the horizontal width of the convection prevention plate 20.
【００３１】本実施例において、対流防止板２０をステ
ンレス製とし、その幅を４５０ｍｍ、厚さを２ｍｍのも
のを用い、ガラス板８の中心から約１０ｍｍ離れた位置
に設け、他の条件は実施例１と同様にしてガラス板８を
製造した。In this embodiment, the convection preventing plate 20 is made of stainless steel, has a width of 450 mm and a thickness of 2 mm, and is provided at a position about 10 mm away from the center of the glass plate 8. A glass plate 8 was produced in the same manner as in Example 1.
【００３２】得られたガラス板は中央部分３００ｍｍ内
での反りの最大値が、０．１％以下という、実施例１よ
りもさらに優れたものであった。The obtained glass plate had a maximum value of the warpage within the central portion of 300 mm of 0.1% or less, which was even better than that of Example 1.
【００３３】（実施例３）図５は本発明のガラス板の製
造装置の第３の実施例の正面断面図、図６は図５のＣ−
Ｃ断面図である。(Embodiment 3) FIG. 5 is a front sectional view of a third embodiment of the apparatus for manufacturing a glass sheet of the present invention, and FIG.
It is C sectional drawing.
【００３４】本実施例は対流防止板の形状・配置が第２
の実施例と異なるのみで、その他は第１及び第２の実施
例と同様である。In this embodiment, the shape and arrangement of the convection preventing plate are
The third embodiment is different from the first and second embodiments except for the third embodiment.
【００３５】図５において、対流防止板３０は左右方向
の長さが、ローラ５ａ，５ｂの自由端側の端面５a1，５
b1間の間隔より短く構成されている。したがって各対流
防止板３０，３０を、高さ方向にわずかの隙間Ｇをもっ
て配置可能である。In FIG. 5, the length of the convection prevention plate 30 in the left-right direction is equal to the free end surfaces 5a1, 5a of the rollers 5a, 5b.
It is configured shorter than the interval between b1. Therefore, each convection preventing plate 30, 30 can be arranged with a slight gap G in the height direction.
【００３６】第２の実施例と同様に、各対流防止板３０
はそれぞれ４本の支持棒３１により支持されており、各
支持棒３１は炉壁１に図４の左右方向に移動可能に設け
られ、ガラス板８と対流防止板３０との間の間隔を調節
可能に構成されている。As in the second embodiment, each convection preventing plate 30
Are respectively supported by four support rods 31. Each support rod 31 is provided on the furnace wall 1 so as to be movable in the left-right direction in FIG. 4, and adjusts the distance between the glass plate 8 and the convection prevention plate 30. It is configured to be possible.
【００３７】対流防止板３０の材料については実施例２
の場合と同様に、対流を防止する作用を有し、さらに熱
を放出する作用を有する材料である。The material of the convection preventing plate 30 is described in the second embodiment.
As in the case of the above, the material has a function of preventing convection and a function of releasing heat.
【００３８】（実施例４）図７は本発明のガラス板の製
造装置の第４の実施例の正面断面図、図８は図７のＤ−
Ｄ断面図である。(Embodiment 4) FIG. 7 is a front sectional view of a fourth embodiment of the apparatus for manufacturing a glass sheet of the present invention, and FIG.
It is D sectional drawing.
【００３９】本実施例は対流防止板の形状・配置が第２
及び第３の実施例と異なるのみで、その他は第１〜第３
の実施例と同様である。In the present embodiment, the shape and arrangement of the convection prevention plate are the second.
And only the third embodiment is different from the first to third embodiments.
This is the same as the embodiment.
【００４０】図において、対流防止板４０は成形体２と
ローラ５ａ，５ｂの間及びローラ５ａ，５ｂとローラ５
ａ，５ｂの間の間にそれぞれ水平に設けられ、直接炉壁
１に支持されている。なおこの対流防止板４０は図８に
おいて炉壁１に対して左右方向に移動可能に支持するの
が好ましい。In the figure, a convection preventing plate 40 is provided between the compact 2 and the rollers 5a and 5b and between the rollers 5a and 5b and the rollers 5a and 5b.
a, 5b, each of which is horizontally provided and directly supported by the furnace wall 1. The convection prevention plate 40 is preferably supported so as to be movable in the left-right direction with respect to the furnace wall 1 in FIG.
【００４１】対流防止板４０の材料については対流防止
板に囲まれた部屋が各部屋ごとに独立しているので、断
熱性に優れたセラミックファイバー等が好ましい。With respect to the material of the convection prevention plate 40, since the rooms surrounded by the convection prevention plate are independent for each room, ceramic fiber or the like having excellent heat insulation is preferable.
【００４２】[0042]
【発明の効果】本発明のガラス板の製造装置によれば、
ローラ軸を冷却しても、その冷却ガスはガラス板を急冷
せず、かつ冷却媒体の温度差による熱歪みが生じないの
で、熱歪みによる割れが生じることもなく平面度に優
れ、反りの少ないガラス板を製造することができる。According to the apparatus for manufacturing a glass sheet of the present invention,
Even when the roller shaft is cooled, the cooling gas does not rapidly cool the glass plate and does not cause thermal distortion due to the temperature difference of the cooling medium. A glass plate can be manufactured.
【図１】本発明のガラス板の製造装置の第１の実施例の
部分断面正面図である。FIG. 1 is a partial sectional front view of a first embodiment of a glass sheet manufacturing apparatus of the present invention.
【図２】図１のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】本発明のガラス板の製造装置の第２の実施例の
部分断面正面図である。FIG. 3 is a partial sectional front view of a second embodiment of the apparatus for manufacturing a glass sheet of the present invention.
【図４】図３のＢ−Ｂ断面図である。FIG. 4 is a sectional view taken along line BB of FIG. 3;
【図５】本発明のガラス板の製造装置の第３の実施例の
部分断面正面図である。FIG. 5 is a partial sectional front view of a third embodiment of the apparatus for manufacturing a glass sheet of the present invention.
【図６】図５のＣ−Ｃ断面図である。FIG. 6 is a sectional view taken along the line CC of FIG. 5;
【図７】本発明のガラス板の製造装置の第４の実施例の
部分断面正面図である。FIG. 7 is a partial sectional front view of a fourth embodiment of the apparatus for manufacturing a glass sheet of the present invention.
【図８】図７のＤ−Ｄ断面図である。8 is a sectional view taken along the line DD of FIG. 7;
【図９】従来例のガラス板の製造装置の部分断面正面図
である。FIG. 9 is a partial cross-sectional front view of a conventional apparatus for manufacturing a glass plate.
【図１０】図９のＥ−Ｅ断面図である。FIG. 10 is a sectional view taken along line EE of FIG. 9;
１ 炉壁 ２ 成形体 ２ａ 凹部 ２ｂ，２ｃ 成形体の表裏面 ３ 溶融ガラス ４ 供給管 ５〜７（５ａ〜７ｃ） ローラ ８ ガラス板 ８ａ，８ｂ 側縁部 ９（９ａ，９ｂ） ローラ軸 １０（１０ａ，１０ｂ） 軸受 １１（１１ａ，１１ｂ） 歯車 １２（１２ａ，１２ｂ） モータ ２０，３０，４０ 対流防止板 ２１，３１，４１ 支持棒 DESCRIPTION OF SYMBOLS 1 Furnace wall 2 Molded body 2a Depression 2b, 2c Front and back of molded body 3 Molten glass 4 Supply pipe 5-7 (5a-7c) Roller 8 Glass plate 8a, 8b Side edge 9 (9a, 9b) Roller shaft 10 ( 10a, 10b) Bearing 11 (11a, 11b) Gear 12 (12a, 12b) Motor 20, 30, 40 Convection prevention plate 21, 31, 41 Support rod
───────────────────────────────────────────────────── フロントページの続き (72)発明者 遠藤 栄昭 東京都新宿区中落合２丁目７番５号 ホ ーヤ株式会社内 (72)発明者 星野 和彦 大阪府大阪市中央区道修町３丁目５番11 号 日本板硝子株式会社内 (56)参考文献 特開 平５−124827（ＪＰ，Ａ) 特開 平２−225326（ＪＰ，Ａ) 特開 昭64−8351（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C03B 17/06 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hideaki Endo 2-7-5 Nakaochiai, Shinjuku-ku, Tokyo Hoya Co., Ltd. (72) Inventor Kazuhiko Hoshino 3--5 Doshumachi, Chuo-ku, Osaka-shi, Osaka No. 11 Nippon Sheet Glass Co., Ltd. (56) References JP-A-5-124827 (JP, A) JP-A-2-225326 (JP, A) JP-A-64-8351 (JP, A) (58) Survey Field (Int.Cl. 7 , DB name) C03B 17/06
Claims (3)
形してガラス板とする成形体と、 前記ガラス板を挟持し搬送する搬送手段と、を備え、 前記搬送手段は、ガラス板の各側縁部近傍にそれぞれ設
けられた一対のローラと、該ローラを支持するローラ軸
とを有し、該ローラ軸は片支持されていることを特徴と
する、ガラス板の製造装置。1. A molded body provided in a furnace and formed into a glass plate by molding molten glass into a plate shape, and a conveying unit for sandwiching and conveying the glass plate, wherein the conveying unit includes a glass plate. A glass roller manufacturing apparatus, comprising: a pair of rollers provided in the vicinity of each side edge portion; and a roller shaft for supporting the rollers, wherein the roller shaft is partially supported.
徴とする請求項１記載のガラス板の製造装置。2. The glass sheet manufacturing apparatus according to claim 1, wherein a convection preventing plate is provided in the furnace.
ス製であることを特徴とする請求項２記載のガラス板の
製造装置。3. The apparatus according to claim 2, wherein the convection preventing plate is made of metal or ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03286906A JP3093000B2 (en) | 1991-10-31 | 1991-10-31 | Glass plate manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03286906A JP3093000B2 (en) | 1991-10-31 | 1991-10-31 | Glass plate manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05124826A JPH05124826A (en) | 1993-05-21 |
| JP3093000B2 true JP3093000B2 (en) | 2000-09-25 |
Family
ID=17710527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03286906A Expired - Lifetime JP3093000B2 (en) | 1991-10-31 | 1991-10-31 | Glass plate manufacturing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3093000B2 (en) |
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1991
- 1991-10-31 JP JP03286906A patent/JP3093000B2/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| JPH05124826A (en) | 1993-05-21 |
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