JPH05124827A - Device for producing glass plate and production of glass plate - Google Patents
Device for producing glass plate and production of glass plateInfo
- Publication number
- JPH05124827A JPH05124827A JP28690891A JP28690891A JPH05124827A JP H05124827 A JPH05124827 A JP H05124827A JP 28690891 A JP28690891 A JP 28690891A JP 28690891 A JP28690891 A JP 28690891A JP H05124827 A JPH05124827 A JP H05124827A
- Authority
- JP
- Japan
- Prior art keywords
- glass plate
- glass
- molded body
- cooler
- plate
- 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
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
- C03B17/064—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
- 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
- C03B17/067—Forming glass sheets combined with thermal conditioning of the sheets
-
- 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
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)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガラス板の製造装置及
び製造方法に係わり、特に垂直方向下方へガラス板を引
下げるガラス板の製造装置及び製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass plate manufacturing apparatus and manufacturing method, and more particularly to a glass plate manufacturing apparatus and manufacturing method for pulling a glass plate downward in a vertical direction.
【０００２】[0002]
【従来の技術】ガラス板を製造する方法として、ガラス
板を垂直下方へ引き抜くダウンドロー方式が知られてい
る。ダウンドロー方式の場合には、下端部において近接
した表裏面を有するくさび状の成形体の頂部に、溶融ガ
ラスを供給し、成形体の表裏面に分流させ、次いで成形
体の下端部で合流させ、そして冷却しながら引張りロー
ラでガラスを下方に引下げることによってガラス板の成
形を行なう。2. Description of the Related Art As a method for manufacturing a glass plate, a downdraw system is known in which the glass plate is pulled vertically downward. In the case of the down draw method, the molten glass is supplied to the top of the wedge-shaped molded product having the front and back surfaces that are close to each other at the lower end, and the molten glass is split into the front and back surfaces of the molded product, and then merged at the lower end of the molded product. Then, the glass plate is formed by pulling the glass downward with a pulling roller while cooling.
【０００３】しかし、上述のようなガラス板の製造方法
では、ガラスが成形体から離れると同時に表面張力によ
りガラス板の幅が収縮する。その結果、ガラス板の両側
縁部に膨らみ（玉縁）が生じるので、この玉縁を切捨
て、中央部分（例えば厚さが所定値±０．１ｍｍの範囲
内におさまる部分）のみを実用に供することとなる。上
記した収縮が大きいと、切り捨てられる両側縁部を除い
た中央部分が小さくなり、効率が悪くなる。However, in the glass plate manufacturing method as described above, the width of the glass plate shrinks due to the surface tension at the same time as the glass leaves the molded body. As a result, bulges (ball edges) occur on both side edges of the glass plate, so these ball edges are discarded, and only the central portion (for example, the portion where the thickness falls within a predetermined value ± 0.1 mm) is put to practical use. It will be. If the above-mentioned contraction is large, the central portion except for the cut-off side edges becomes small, resulting in poor efficiency.
【０００４】この欠点を解決する手段として、特公昭３
８ー１７８２０号公報に記載されたようなものが提案さ
れている。これは成形体の下方の炉壁近くにクーラーを
設けて、ガラス板が成形体から離れた時にガラス板を冷
却し、かつ成形体の下端部の下方すぐ近くに設けられた
ぎざ付き輪によってガラス板の両側縁部を挟持するもの
である。このような構成によって、ガラスの粘性を上
げ、ガラス板の幅が収縮するのを防止しようとするもの
である。As a means for solving this drawback, Japanese Patent Publication No. 3
The one described in Japanese Patent Publication No. 8-17820 has been proposed. This is because a cooler is provided near the furnace wall below the molded body to cool the glass sheet when it separates from the molded body, and a glass is provided by a knurled ring provided immediately below the lower end of the molded body. It holds both side edges of the plate. With such a structure, it is intended to increase the viscosity of the glass and prevent the width of the glass plate from shrinking.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、特公昭
３８ー１７８２０号公報記載のものは、クーラーをガラ
ス板の幅全体に渡って設けているので、ガラス板の全幅
が冷却される。このようにガラス板の中央部も冷却する
と、急冷による熱歪のため反り品質を悪化させるので好
ましくない。However, in the one disclosed in Japanese Patent Publication No. 38-17820, since the cooler is provided over the entire width of the glass plate, the entire width of the glass plate is cooled. If the central portion of the glass plate is also cooled in this manner, the warp quality is deteriorated due to thermal strain due to rapid cooling, which is not preferable.
【０００６】また、このクーラーはガラス板から離れて
炉壁の近くに設けられているので冷却効率が低い。クー
ラーをガラス板の近傍に設けようとしても、上記の構成
ではガラス板を挟持するぎざ付き輪が障害となって余り
近くに設けることができない。このためガラス板の収縮
を十分に押えることができず、両側縁部に膨らみが生じ
てしまう。Further, since this cooler is provided near the furnace wall apart from the glass plate, the cooling efficiency is low. Even if the cooler is to be provided near the glass plate, it cannot be provided too close in the above configuration because the knurled wheel that holds the glass plate interferes. For this reason, the shrinkage of the glass plate cannot be sufficiently suppressed, and bulges occur on both side edge portions.
【０００７】したがって、本発明の目的は、成形される
ガラス板の幅を大きくして厚みの均一な部分を大きくと
ることができ、かつ、反り品質の良好なガラス板を製造
することができるガラス板の製造装置及び製造方法を提
供することにある。Therefore, an object of the present invention is to increase the width of a glass sheet to be formed so that a portion having a uniform thickness can be increased and to produce a glass sheet having good warp quality. An object is to provide a plate manufacturing apparatus and a manufacturing method.
【０００８】[0008]
【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、下端部において近接した幅広の表裏面を有し溶
融ガラスを板状に成形してガラス板とする成形体と、こ
の成形体と上下方向に間隔をおいて配置され、冷却され
たガラス板を引下げる引張りローラと、前記成形体と前
記引張りローラの間の、前記ガラス板の両側縁部近傍の
位置に、前記ガラス板と空間を介して設けられた冷却器
と、を備えることを特徴とする。本発明によればこの冷
却装置は、冷媒を通すものが好ましい。DISCLOSURE OF THE INVENTION A glass sheet manufacturing apparatus of the present invention is a molded article having a wide front and back surfaces which are close to each other at a lower end portion thereof and is formed into a glass sheet by shaping a molten glass into a plate shape. A pulling roller that is arranged at an interval in the vertical direction from the body and pulls down the cooled glass plate, and between the molded body and the pulling roller, at a position near both side edges of the glass plate, the glass plate And a cooler provided via a space. According to the invention, this cooling device is preferably one which allows a cooling medium to pass through.
【０００９】本発明のガラス板の製造方法は、下端部に
おいて近接した幅広の表裏面を有する成形体の頂部に溶
融ガラスを供給し、供給された溶融ガラスを前記成形体
の表裏面に分流させ、前記成形体の下端部で合流させて
ガラス板とし、このガラスを引張りローラで引下げ、前
記成形体と前記引張りローラの間の前記ガラス板の両側
縁部近傍の位置に、前記ガラス板と空間を介して設けら
れた冷却器によって、前記ガラス板の両側縁部を冷却す
ることによりガラス板を製造することを特徴とする。In the method for producing a glass sheet of the present invention, molten glass is supplied to the top of a molded product having wide front and back surfaces that are close to each other at the lower end, and the supplied molten glass is split into the front and back surfaces of the molded product. , A glass plate is merged at the lower end of the molded body, the glass is pulled down by a pulling roller, the glass plate and the space between the molded body and the pulling roller in the vicinity of both side edges of the glass plate. The glass plate is manufactured by cooling both side edges of the glass plate with a cooler provided through the glass plate.
【００１０】[0010]
【作用】成形体の頂部に供給された溶融ガラスは、成形
体の表裏面に分流し、成形体の下端部で合流して一枚の
ガラス板となる。このとき冷却器は、ガラス板の両側縁
部を冷却し、その粘度を上げるので、成形体から離れた
ガラス板の内方への縮みが防止される。The molten glass supplied to the top of the molded body is split into the front and back surfaces of the molded body, and merges at the lower end of the molded body to form a single glass plate. At this time, the cooler cools both side edges of the glass plate and increases its viscosity, so that the glass plate is prevented from contracting inwardly away from the molded body.
【００１１】[0011]
【実施例】以下、実施例に基づき本発明を詳細に説明す
るが、本発明はこれに限定されるものではない。EXAMPLES The present invention will be described in detail below based on examples, but the present invention is not limited thereto.
【００１２】図１〜図３は本願発明のガラス板の製造装
置の一実施例を示す。図１はその側面断面図、図２は図
１のＡ−Ａ線断面図、図３は図１のＢ−Ｂ線断面図であ
る。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の頂部には溶融ガ
ラス３を収容する凹部２ａが形成され、幅広の表裏面２
ｂ，２ｃは下方に向けて互いに近接して横断面がほぼく
さび形を呈する。この成形体２の表面は白金又は白金合
金により被覆され、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。1 to 3 show one embodiment of the glass plate manufacturing apparatus of the present invention. 1 is a side sectional view thereof, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a sectional view taken along the line BB of FIG. The furnace wall 1 is made of 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 on the top of the molded body 2 and has a wide front and back surface 2
The b and 2c are close to each other in the downward direction 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 is filled with a refractory material (for example, foamed alumina or electroformed brick).
【００１３】成形体２の凹部２ａは、溶融ガラスの供給
管（図示せず）に接続されている。４はガラス板で、成
形体２の下方で幅広に形成され、側縁部４ａ，４ｂを有
する。The recess 2a of the molded body 2 is connected to a molten glass supply pipe (not shown). 4 is a glass plate, which is formed wide below the molded body 2 and has side edge portions 4a and 4b.
【００１４】成形体２の形状は例えば頂部のやや下方の
最大の厚みが約１５０ｍｍ、高さが約２５０ｍｍとなる
ように形成されている。なおこの成形体２の形状、大き
さは、ガラスの粘性、成形しようとするガラス板の板
厚、幅、および製造量等に応じ、適宜選択する。The shape of the molded body 2 is formed such that the maximum thickness slightly below the top is about 150 mm and the height is about 250 mm. The shape and size of the molded body 2 are appropriately selected depending on the viscosity of the glass, the thickness and width of the glass plate to be molded, the production amount, and the like.
【００１５】冷却器５は、成形体２の下端部のすぐ下方
の、ガラス板４の両側縁部４ａ，４ｂ近傍の位置に、こ
のガラス板４と空間を介して設けられている。また、こ
の冷却器５は図３に示すように、ガラス板４の両側縁部
４ａ，４ｂを挟むようにし左右２個ずつ合計４個設けら
れている。冷却器５はステンレス製で、図２により説明
すると縦５０ｍｍ、横７０ｍｍ、奥行き１５ｍｍの箱型
になるように形成されている。冷却器５の内部は空洞で
あり、冷媒供給孔６及び冷媒排出孔７が設けられてい
る。これらの冷媒供給孔６及び冷媒排出孔７は、各々ス
テンレス製の冷媒供給管８及び冷媒排出管９に接続され
ている。これら冷媒供給管８及び冷媒排出管９は各冷却
器５を所定の位置に支持する役割も果たしている。The cooler 5 is provided at a position immediately below the lower end of the molded body 2 and in the vicinity of both side edges 4a and 4b of the glass plate 4 via the glass plate 4 and a space. Further, as shown in FIG. 3, four coolers 5 are provided in total, two on each of the left and right sides so as to sandwich both side edge portions 4a and 4b of the glass plate 4. The cooler 5 is made of stainless steel and has a box shape with a length of 50 mm, a width of 70 mm, and a depth of 15 mm, which will be described with reference to FIG. The inside of the cooler 5 is hollow, and a coolant supply hole 6 and a coolant discharge hole 7 are provided therein. The coolant supply hole 6 and the coolant discharge hole 7 are connected to a coolant supply pipe 8 and a coolant discharge pipe 9 made of stainless steel, respectively. The refrigerant supply pipe 8 and the refrigerant discharge pipe 9 also play a role of supporting each cooler 5 at a predetermined position.
【００１６】本実施例では冷却器５はガラス板からの距
離が例えば１０〜２０ｍｍとなるように設定支持されて
いる。In this embodiment, the cooler 5 is set and supported so that the distance from the glass plate is, for example, 10 to 20 mm.
【００１７】冷却器５の内部を通る冷媒１０は、冷却器
５、冷媒供給管８および冷媒排出管９を所定の温度に冷
却し得るものならば何でもよく、水や油等の液体でも、
空気や窒素ガス等の気体或いは噴霧状の水を含んだ空気
でもよい。熱容量の大きいものが好ましく、入手の容易
さを考慮すれば水が最も好ましい。本実施例では２５〜
３０℃の水を使用し、約１０ｍｌ／ｍｉｎで循環させ
た。The refrigerant 10 passing through the inside of the cooler 5 may be anything as long as it can cool the cooler 5, the refrigerant supply pipe 8 and the refrigerant discharge pipe 9 to a predetermined temperature, and liquid such as water or oil,
It may be air or a gas such as nitrogen gas or air containing water in the form of spray. Water having a large heat capacity is preferable, and water is most preferable in consideration of availability. In this embodiment, 25 to
Water at 30 ° C. was used and circulated at about 10 ml / min.
【００１８】さらに、冷却器５の下方の適当な位置に
は、各一対の引張りローラ１１（１１ａ，１１ａ，１１
ｂ，１１ｂ，１１ｃ，１１ｃ，１１ｄ，１１ｄ）が合計
４組上下方向に間隔をおいて配置されている。各引張り
ローラ１１（１１ａ，１１ｂ，１１ｃ，１１ｄ）の回転
軸１２（１２ａ，１２ｂ，１２ｃ，１２ｄ）は図示しな
い駆動手段により、図１に示すように回転させられ、成
形されたガラス板４を連続的に引下げる。Further, at a proper position below the cooler 5, a pair of pulling rollers 11 (11a, 11a, 11) are provided.
b, 11b, 11c, 11c, 11d, 11d), a total of four sets are arranged at intervals in the vertical direction. The rotating shaft 12 (12a, 12b, 12c, 12d) of each pulling roller 11 (11a, 11b, 11c, 11d) is rotated as shown in FIG. Pull down continuously.
【００１９】次に以上のように構成されたガラス板の製
造装置を使用してガラス板を製造する方法を説明する。
溶融ガラスの供給管（図示せず）から成形体２の凹部２
ａ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２
ｂ，２ｃに沿って流下し、成形体２の下端部で合流し、
１枚のガラス板４となり、引張りローラ１１によって４
０ｃｍ／ｍｉｎの速度で引下げられる。Next, a method of manufacturing a glass plate using the glass plate manufacturing apparatus configured as described above will be described.
From the molten glass supply pipe (not shown) to the recess 2 of the molded body 2.
A homogeneous molten glass 3 containing no bubbles and foreign matters and having no striae is supplied to a. The molten glass 3 overflows from the slit-shaped opening on the upper side of the concave portion 2a and is diverted to form the front and back surfaces 2 of the molded body 2.
b, 2c, and join at the lower end of the molded body 2,
It becomes one glass plate 4 and is pulled by the pulling roller 11.
It is pulled down at a speed of 0 cm / min.
【００２０】ガラスが成形体から離れる際に、冷却器５
によってガラス板４の両側縁部４ａ，４ｂを冷却してそ
の粘度を上昇させるので、従来のようにガラス板４の側
縁部４ａ，４ｂに表面張力による膨らみ（玉縁）が形成
されてガラス板４が内方に縮むのを防ぐことができる。When the glass leaves the compact, the cooler 5
Since the both side edges 4a, 4b of the glass plate 4 are cooled by the glass plate 4 to increase its viscosity, a bulge (ball edge) due to surface tension is formed on the side edges 4a, 4b of the glass plate 4 as in the prior art. It is possible to prevent the plate 4 from shrinking inward.
【００２１】このようにして得られたガラス板は、幅方
向中央部の厚みが１．１ｍｍ、厚みが１．１±０．１ｍ
ｍの範囲におさまる幅（有効幅）は約３００ｍｍであっ
た。比較のため、冷却器５を取り除き、他は同様の条件
でガラス板を製造したところ、厚みが１．１±０．１ｍ
ｍの範囲に納まる幅は約２４０ｍｍであった。このよう
に、本実施例では、冷却器を設けたことにより、成形さ
れるガラス板の厚みが１．１±０．１ｍｍの範囲に納ま
る平坦な部分を約６０ｍｍ大きくすることができた。The glass plate thus obtained had a thickness of 1.1 mm at the center in the width direction and a thickness of 1.1 ± 0.1 m.
The width (effective width) within the range of m was about 300 mm. For comparison, when the glass plate was manufactured under the same conditions except that the cooler 5 was removed, the thickness was 1.1 ± 0.1 m.
The width within the range of m was about 240 mm. As described above, in this example, by providing the cooler, the flat portion where the thickness of the glass sheet to be molded was within the range of 1.1 ± 0.1 mm could be increased by about 60 mm.
【００２２】本実施例では、冷却器５はガラスと離れて
設けられているために、冷却器５や冷媒供給管８および
冷媒排出孔７等を、熱変形しない程度の十分低い温度に
保持することができた。In this embodiment, since the cooler 5 is provided separately from the glass, the cooler 5, the refrigerant supply pipe 8, the refrigerant discharge hole 7 and the like are kept at a sufficiently low temperature so as not to be thermally deformed. I was able to do it.
【００２３】また、反り品質（ガラス板の有効幅（図２
の左右方向）内での両端を結んだ線からのガラス板の高
さ方向（図３の上下方向）のずれの量の最大値を有効幅
の長さで割った値をいう）は０．１％程度と、ガラス板
として優れたものであった。なお、ガラス板４の側縁部
４ａ，４ｂに対する冷却能力は、冷却器５の形状（特に
ガラス板４の流れの方向の長さ）やガラス板４との間の
距離を選択することにより調節できる。すなわち、ガラ
ス板４の流れの方向の長さを長くすればするほど、ガラ
ス板４との間の距離を小さくすればするほど、冷却器５
の冷却能力は向上する。この冷却器５の冷却能力を、ガ
ラスの粘性、成形しようとするガラス板の板厚、幅、製
造量、ガラス板の温度等に合わせて適宜最適のものを選
択することにより、例えばガラスを急冷することによる
亀裂が生じるようなことは避けられる。The warp quality (effective width of the glass plate (see FIG. 2
In the horizontal direction) is a value obtained by dividing the maximum value of the amount of deviation in the height direction (vertical direction in FIG. 3) of the glass plate from the line connecting both ends) by the effective width. It was about 1%, which was excellent as a glass plate. The cooling capacity for the side edge portions 4a and 4b of the glass plate 4 is adjusted by selecting the shape of the cooler 5 (in particular, the length of the glass plate 4 in the flow direction) and the distance between the glass plate 4 and the cooler 5. it can. That is, the longer the length of the glass plate 4 in the flow direction is, and the smaller the distance between the glass plate 4 and the glass plate 4 is, the cooler 5 is provided.
The cooling capacity of is improved. The cooling capacity of the cooler 5 is appropriately selected according to the viscosity of the glass, the thickness of the glass plate to be formed, the width, the production amount, the temperature of the glass plate, etc. It is possible to avoid the occurrence of cracks by doing.
【００２４】図４は本発明に用いる冷却器の変形例を示
す。この変形例が図１に示した実施例に用いる冷却器５
と異なるのは、その形状のみであり、他は同一である。
すなわち、図において冷却器１５はガラス板４の側縁部
４ａ，４ｂの形状に沿うように湾曲した形状のものであ
り、冷媒供給孔１６、冷媒排出孔１７を設けられてい
る。冷媒供給孔１６は冷媒供給管１８に接続され、冷媒
排出孔１７は冷媒排出管１９に接続されている。FIG. 4 shows a modification of the cooler used in the present invention. This modification is a cooler 5 used in the embodiment shown in FIG.
The only difference is with the shape, and the others are the same.
That is, in the figure, the cooler 15 has a curved shape along the shapes of the side edge portions 4 a and 4 b of the glass plate 4, and is provided with a refrigerant supply hole 16 and a refrigerant discharge hole 17. The coolant supply hole 16 is connected to the coolant supply pipe 18, and the coolant discharge hole 17 is connected to the coolant discharge pipe 19.
【００２５】図５は本発明に用いる冷却器の他の変形例
を示す。図において、１個の冷却器２５がガラス板４の
一方の側縁部４ａ，４ｂの上下を覆う形状とされてい
る。冷却器２５は冷媒供給孔２６、冷媒排出孔２７を設
けられ、冷媒供給孔２６は冷媒供給管２８に接続され、
冷媒排出孔２７は冷媒排出管２９に接続されている。こ
の変形例の場合、冷却器５はガラス板４の両側縁部４
ａ，４ｂに各々１個ずつ、全部で２個だけとすることが
できる。FIG. 5 shows another modification of the cooler used in the present invention. In the figure, one cooler 25 has a shape that covers the upper and lower sides of one side edge 4a, 4b of the glass plate 4. The cooler 25 is provided with a coolant supply hole 26 and a coolant discharge hole 27, the coolant supply hole 26 is connected to a coolant supply pipe 28,
The refrigerant discharge hole 27 is connected to the refrigerant discharge pipe 29. In the case of this modification, the cooler 5 includes the both side edge portions 4 of the glass plate 4.
It is possible to use one for each of a and 4b, and only two in total.
【００２６】[0026]
【発明の効果】本発明においては、成形体と引張りロー
ラの間の、ガラス板の両側縁部近傍の位置に、ガラス板
と空間を介して冷却器を設け、これによりガラス板の両
側縁部を効果的に冷却するようにしたため、ガラス板の
厚みの均一な部分を大きくし、かつ反り品質を良好にす
ることができる。According to the present invention, a cooler is provided between the molded body and the pulling roller in the vicinity of both side edges of the glass plate through the glass plate and the space, whereby both side edges of the glass plate are provided. Since the glass plate is cooled effectively, it is possible to increase the portion of the glass plate having a uniform thickness and to improve the warp quality.
【図１】本発明に係るガラス板の製造装置の一実施例を
示す側面断面図である。FIG. 1 is a side sectional view showing an embodiment of a glass plate manufacturing apparatus according to the present invention.
【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along the line AA of FIG.
【図３】図１のＢ−Ｂ線断面図である。FIG. 3 is a sectional view taken along line BB of FIG.
【図４】本発明に係るガラス板の製造装置に用いる冷却
器の変形例を示す図である。FIG. 4 is a view showing a modified example of the cooler used in the glass plate manufacturing apparatus according to the present invention.
【図５】本発明に係るガラス板の製造装置に用いる冷却
器の他の変形例を示す図である。FIG. 5 is a diagram showing another modification of the cooler used in the glass plate manufacturing apparatus according to the present invention.
１ 炉壁 ２ 成形体 ２ａ 凹部 ２ｂ，２ｃ 表裏面 ３ 溶融ガラス ４ ガラス板 ４ａ，４ｂ 側縁部 ５，１５，２５ 冷却器 ６ 冷媒供給孔 ７ 冷媒排出孔 ８ 冷媒供給管 ９ 冷媒排出管 １０ 冷媒 １１（１１ａ，１１ｂ，１１ｃ，１１ｄ） 引張りロー
ラ １２（１２ａ，１２ｂ，１２ｃ，１２ｄ） 回転軸DESCRIPTION OF SYMBOLS 1 Furnace wall 2 Molded body 2a Recesses 2b, 2c Front and back surfaces 3 Molten glass 4 Glass plates 4a, 4b Side edge portions 5, 15, 25 Cooler 6 Refrigerant supply hole 7 Refrigerant discharge hole 8 Refrigerant supply pipe 9 Refrigerant discharge pipe 10 Refrigerant 11 (11a, 11b, 11c, 11d) Pulling roller 12 (12a, 12b, 12c, 12d) Rotating shaft
───────────────────────────────────────────────────── フロントページの続き (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 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Hoshino 3-5-11 Doshomachi, Chuo-ku, Osaka-shi, Osaka Inside Nippon Sheet Glass Co., Ltd.
Claims (3)
有し溶融ガラスを板状に成形してガラス板とする成形体
と、 この成形体と上下方向に間隔をおいて配置され、ガラス
板を引下げる引張りローラと、 前記成形体と前記引張りローラの間の、前記ガラス板の
両側縁部近傍の位置に、前記ガラス板と空間を介して設
けられた冷却器と、 を備えることを特徴とするガラス板の製造装置。1. A molded body which has a wide front and back surfaces which are close to each other at a lower end portion thereof, and is formed into a glass plate by molding molten glass into a glass plate, and a glass plate which is vertically spaced from the molded body. A pulling roller for pulling down the glass plate, and a cooler provided between the molded body and the pulling roller at a position near both side edges of the glass plate via the glass plate and a space. Glass plate manufacturing equipment.
を特徴とする請求項１記載のガラス板の製造装置。2. The apparatus for manufacturing a glass plate according to claim 1, wherein the cooling device is one through which a refrigerant passes.
有する成形体の頂部に溶融ガラスを供給し、 供給された溶融ガラスを前記成形体の表裏面に分流さ
せ、前記成形体の下端部で合流させてガラス板とし、こ
のガラス板を引張りローラで引下げ、 前記成形体と前記引張りローラの間の前記ガラス板の両
側縁部近傍の位置に、前記ガラス板と空間を介して設け
られた冷却器によって、前記ガラス板の両側縁部を冷却
することを特徴とする、ガラス板の製造方法。3. A molten glass is supplied to the top of a molded body having wide front and back surfaces that are close to each other at the lower end, the supplied molten glass is diverted to the front and back surfaces of the molded body, and at the lower end of the molded body. A glass plate is obtained by merging the glass plates, and the glass plates are pulled down by a pulling roller, and cooling is provided at a position near both side edges of the glass plate between the molded body and the pulling roller via the glass plate and a space. A method for manufacturing a glass sheet, characterized in that both side edges of the glass sheet are cooled by a vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28690891A JPH05124827A (en) | 1991-10-31 | 1991-10-31 | Device for producing glass plate and production of glass plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28690891A JPH05124827A (en) | 1991-10-31 | 1991-10-31 | Device for producing glass plate and production of glass plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05124827A true JPH05124827A (en) | 1993-05-21 |
Family
ID=17710551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28690891A Pending JPH05124827A (en) | 1991-10-31 | 1991-10-31 | Device for producing glass plate and production of glass plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05124827A (en) |
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-
1991
- 1991-10-31 JP JP28690891A patent/JPH05124827A/en active Pending
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Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20001030 |