JPH04280820A - Glass gob, production of glass gob and production device therefor - Google Patents
Glass gob, production of glass gob and production device thereforInfo
- Publication number
- JPH04280820A JPH04280820A JP4331491A JP4331491A JPH04280820A JP H04280820 A JPH04280820 A JP H04280820A JP 4331491 A JP4331491 A JP 4331491A JP 4331491 A JP4331491 A JP 4331491A JP H04280820 A JPH04280820 A JP H04280820A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- molten glass
- molten
- gob
- glass member
- 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.)
- Granted
Links
- 239000011521 glass Substances 0.000 title claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000006060 molten glass Substances 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000005357 flat glass Substances 0.000 claims description 62
- 239000000463 material Substances 0.000 abstract description 13
- 238000000465 moulding Methods 0.000 abstract description 10
- 230000003287 optical effect Effects 0.000 abstract description 6
- 238000005498 polishing Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 15
- 230000003746 surface roughness Effects 0.000 description 10
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000005304 optical glass Substances 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 2
- 238000007496 glass forming Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/14—Pressing laminated glass articles or glass with metal inserts or enclosures, e.g. wires, bubbles, coloured parts
-
- 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
- C03B7/10—Cutting-off or severing the glass flow with the aid of knives or scissors or non-contacting cutting means, e.g. a gas jet; Construction of the blades used
- C03B7/12—Cutting-off or severing a free-hanging glass stream, e.g. by the combination of gravity and surface tension forces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Glass Compositions (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、光学機器に使用される
高精度光学ガラス素子をガラス成形法により成形するた
めの成形用ガラスゴブ並びにその製造方法及び製造装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding glass gob for molding high-precision optical glass elements used in optical equipment by a glass molding method, and a manufacturing method and manufacturing apparatus thereof.
【０００２】0002
【従来の技術】光学機器に使用される高精度光学ガラス
素子をガラス成形法により成形するための成形用ガラス
ゴブは、例えば特公平２ー５００５９号公報に記載され
ているように、その面粗度についてかなり厳しい制約が
ある。これは、成形金型は例え鏡面に仕上げられていた
としても、ガラスゴブも一定以上の面粗度が達成されて
いなければ、成形してできたレンズの表面品質が不十分
なものとなるからである。2. Description of the Related Art Glass gobs for forming high-precision optical glass elements used in optical instruments by the glass forming method are known for their surface roughness, as described in, for example, Japanese Patent Publication No. 2-50059. There are quite strict restrictions on this. This is because even if the molding die has a mirror finish, if the glass gob does not have a certain level of surface roughness, the surface quality of the molded lens will be insufficient. be.
【０００３】また、成形用ガラスゴブの形状についても
、光学ガラス素子の最終の形状にできるだけ近いことが
望まれる。これは、ガラスゴブの形状にばらつきがなく
均一なことが、成形プロセスを安定させ高精度な光学素
子を製造するためには欠くことのできない条件であるか
らである。It is also desired that the shape of the glass gob for molding be as close as possible to the final shape of the optical glass element. This is because the shape of the glass gob is uniform without variation, which is an indispensable condition for stabilizing the molding process and manufacturing a highly accurate optical element.
【０００４】この様な高精度な面粗度並びに均一な形状
のガラスゴブを得るために、従来、ガラスゴブの仕上げ
は、研磨加工で行なっていた。In order to obtain glass gobs with such highly accurate surface roughness and uniform shape, glass gobs have conventionally been finished by polishing.
【０００５】[0005]
【発明が解決しようとする課題】上記の通り、従来では
、ガラスの成形に用いるガラスゴブの作成においては、
研磨加工を必要とするために、ガラス成形法のコスト上
の課題となっている。[Problems to be Solved by the Invention] As mentioned above, conventionally, in the production of glass gobs used for glass molding,
Because it requires polishing, it poses a cost problem for glass forming methods.
【０００６】また、ガラスゴブには、研磨加工における
研磨剤が埋没して残存していることがあり、通常の洗浄
ではこの研磨剤が取りきれない場合がある。このように
研磨剤が残っているガラスを成形型で加熱加圧し成形す
ると、得られる成形レンズは不良品となるのみならず、
成形型が致命的な損傷を受け、金型寿命の低下の原因と
なっている。[0006] Furthermore, abrasives from polishing may remain embedded in the glass gob, and this abrasives may not be completely removed by normal cleaning. If glass with residual abrasive is heated and pressed in a mold to form it, the resulting molded lens will not only be defective, but also
The mold is fatally damaged, causing a reduction in mold life.
【０００７】本発明は上記の欠点を解消でき、超精密な
光学素子の成形に用いることのできるガラスゴブ並びに
ガラスゴブの製造方法及び製造装置を提供することを目
的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a glass gob, a glass gob manufacturing method, and a manufacturing apparatus that can eliminate the above-mentioned drawbacks and can be used for molding ultra-precise optical elements.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、溶融ガラスをガラス部材で受けてガラ
スゴブを得るものである。また、この時、必要に応じて
、ガラス部材を、滴下する溶融ガラスに対して相対的に
移動させるものである。[Means for Solving the Problems] In order to solve the above problems, the present invention provides a glass gob by receiving molten glass with a glass member. Moreover, at this time, the glass member is moved relative to the dripping molten glass as necessary.
【０００９】[0009]
【作用】溶融ガラスをガラス部材に受けることで、溶融
ガラスの持つ熱量によりガラス部材表面は溶融ガラスと
密着して、両者は一体となってガラスゴブが形成される
。この時、溶融ガラスの、ガラス部材と接触しない面は
空気と接する自由面であり、その形状は表面張力との釣
合によって形が決定されるが、面粗度、欠陥、研磨剤の
ような異物付着がまったく無い良好な面となる。[Operation] By receiving the molten glass on the glass member, the surface of the glass member comes into close contact with the molten glass due to the amount of heat possessed by the molten glass, and the two are integrated to form a glass gob. At this time, the surface of the molten glass that does not come into contact with the glass member is a free surface that comes into contact with the air, and its shape is determined by the balance with the surface tension. This results in a good surface with no foreign matter adhering to it.
【００１０】また、ガラス部材を滴下する溶融ガラスに
対して相対的に移動させることで、上記の自由面形状を
制御でき、凹形状、凸形状等のガラスゴブが得られるの
である。Furthermore, by moving the glass member relative to the dropping molten glass, the shape of the free surface can be controlled, and glass gobs with concave or convex shapes can be obtained.
【００１１】[0011]
【実施例】以下本発明の実施例について図面を参照しな
がら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.
【００１２】図１において、１は板状ガラス部材である
。板状ガラス部材１は、鏡面でありさえすれば多少うね
りが有っても良いことから、本実施例では、応力割断法
により平板状に加工したものである。もちろん、従来の
平面研磨法で加工したものを用いることも可能である。In FIG. 1, 1 is a plate glass member. Since the plate glass member 1 may have some undulations as long as it has a mirror surface, in this example, it is processed into a flat plate shape by a stress cleaving method. Of course, it is also possible to use a material processed by a conventional surface polishing method.
【００１３】図１（ａ）に示す様に、板状ガラス部材１
と同種のガラスの溶融炉（図示せず）に連結されたノズ
ル１１の下に、板状ガラス部材１を設置する。図示して
いないヒーターでノズル１１の温度を最適温度に保持す
ると、同図（ｂ）に示すように、溶融ガラス２がノズル
１１より流れ出す。この場合、ノズル温度とノズル寸法
を選ぶことにより溶融ガラス２の重量は一定にコントロ
ールできる。As shown in FIG. 1(a), a sheet glass member 1
A plate glass member 1 is installed under a nozzle 11 connected to a melting furnace (not shown) for the same type of glass. When the temperature of the nozzle 11 is maintained at an optimum temperature by a heater (not shown), the molten glass 2 flows out from the nozzle 11, as shown in FIG. In this case, the weight of the molten glass 2 can be controlled to be constant by selecting the nozzle temperature and nozzle dimensions.
【００１４】板状ガラス部材１上に落下した溶融ガラス
２は、その熱量で板状ガラス部材１の上表面を溶融させ
て板状ガラス部材１と一体になると共に、その上面の空
気と接する自由面２ａは、表面張力により凸面形状とな
る。結局、本実施例では、図１（ｃ）に示すような平凸
ガラスゴブ３ができる。The molten glass 2 that has fallen onto the plate glass member 1 uses its heat to melt the upper surface of the plate glass member 1 and become integrated with the plate glass member 1, and is free to come in contact with the air on the upper surface. The surface 2a has a convex shape due to surface tension. In the end, in this example, a plano-convex glass gob 3 as shown in FIG. 1(c) is produced.
【００１５】このようにして得られた凸面２ａは非常に
面粗度の良好な面である。また、凸面の形状はばらつき
がなく一定である。また、板状ガラス部材１は、応力割
断により作成されているので、その下面１ａもきわめて
良好な面粗度を有する。即ち、光学機能面となる１ａ、
２ａは、共に優れた面粗度を有する。The convex surface 2a thus obtained has very good surface roughness. Further, the shape of the convex surface is constant without variation. Moreover, since the plate glass member 1 is created by stress cutting, its lower surface 1a also has an extremely good surface roughness. That is, 1a, which is the optical functional surface,
2a both have excellent surface roughness.
【００１６】上記実施例では、片面側が凸な平凸ガラス
ゴブが得られたが、両面が凸な両凸ガラスゴブを得るに
は、図１（ｃ）に示す平凸ガラスゴブ３を反転し、図２
に示す様にすれば図２（ｃ）に示すような両凸ガラスゴ
ブ４が得られる。In the above embodiment, a plano-convex glass gob with a convex surface on one side was obtained, but in order to obtain a biconvex glass gob with a convex surface on both sides, the plano-convex glass gob 3 shown in FIG.
By doing as shown in FIG. 2, a biconvex glass gob 4 as shown in FIG. 2(c) can be obtained.
【００１７】他の実施例を示す図３について説明する。
図１に比べて板状ガラス部材１の厚さを薄くするかある
いは溶融ガラス２の重量を多くすることにより、溶融ガ
ラス２の熱量が大きく板状ガラス部材１の表面のみなら
ず、その内部、下面まで軟化させ、図３（ｃ）のような
両凸ガラスゴブ５が得られる。このようにして得られた
凸面は非常に面粗度の良好な面である。また、凸面の形
状はばらつきがなく一定である。FIG. 3 showing another embodiment will be explained. By making the thickness of the plate glass member 1 thinner or increasing the weight of the molten glass 2 compared to FIG. By softening down to the lower surface, a biconvex glass gob 5 as shown in FIG. 3(c) is obtained. The convex surface thus obtained has very good surface roughness. Further, the shape of the convex surface is constant without variation.
【００１８】さらに他の実施例を示す図４について説明
する。板状ガラス部材１は、板状ガラス部材保持具２１
上に置かれている。板状ガラス部材保持具２１は、溶融
ガラスのノズル１１に対して移動可能な板状ガラス部材
移動装置２２上に載置されている。本実施例では、移動
装置２２は、ノズル１１から一定距離だけ離れた軸２３
を回転中心軸として回転するものである。FIG. 4 showing still another embodiment will be explained. The plate glass member 1 is attached to a plate glass member holder 21
placed on top. The plate glass member holder 21 is placed on a plate glass member moving device 22 that is movable relative to the molten glass nozzle 11. In this embodiment, the moving device 22 is arranged on a shaft 23 that is a certain distance away from the nozzle 11.
It rotates with the center axis of rotation.
【００１９】図４（ａ）で示すように、板状ガラス部材
と同種のガラスの溶融炉（図示せず）と連通するノズル
１１の下に、板状ガラス部材移動装置２２を設置する。
図示しないヒーターでノズル温度を最適温度に保持する
と、溶融ガラス２がノズル１１より流出する。ノズル温
度とノズル寸法を選ぶことにより溶融ガラス２の流出量
は一定にコントロールできる。As shown in FIG. 4(a), a plate glass member moving device 22 is installed under the nozzle 11 communicating with a melting furnace (not shown) for glass of the same type as the plate glass member. When the nozzle temperature is maintained at an optimum temperature using a heater (not shown), the molten glass 2 flows out from the nozzle 11. By selecting the nozzle temperature and nozzle dimensions, the flow rate of the molten glass 2 can be controlled to be constant.
【００２０】図４（ｂ）に示す様に、板状ガラス部材移
動装置２２を軸２３の周りに回転させる。板状ガラス部
材１上に流出した溶融ガラス２は、板状ガラス部材１の
外周部において、表面張力により自由面である凸面を形
成し、その熱量でガラス部材１の上表面を溶融させてガ
ラス部材１と一体になる。結局、図４（ｃ）のような外
周部が凸面で全体としては凹面形状のガラスゴブが得ら
れる。As shown in FIG. 4(b), the plate glass member moving device 22 is rotated around an axis 23. As shown in FIG. The molten glass 2 that has flowed onto the sheet glass member 1 forms a convex surface, which is a free surface, at the outer periphery of the sheet glass member 1 due to surface tension, and the upper surface of the glass member 1 is melted by the amount of heat, thereby forming a glass. It becomes integral with member 1. As a result, a glass gob with a convex outer circumference and a concave overall shape as shown in FIG. 4(c) is obtained.
【００２１】図３の場合と同様に、板状ガラス部材１の
厚さを薄くするかあるいは溶融ガラス２の重量を多くす
ることにより、溶融ガラス２の熱量が大きく板状ガラス
部材１の表面のみならず内部、下面まで軟化させると、
図４（ｃ）のように下面も外周部が凸面で全体としては
凹形状の両凹ガラスゴブ６が得られる。あるいは図２の
場合のように、板状ガラス部材を反転して同様のことを
行っても両凹ガラスゴブ６が得られる。このようにして
得られた凹面は非常に面粗度の良好な面である。また、
凹面の形状はばらつきがなく一定である。As in the case of FIG. 3, by reducing the thickness of the plate glass member 1 or increasing the weight of the molten glass 2, the amount of heat of the molten glass 2 is large and only the surface of the plate glass member 1 is heated. If you soften it to the inside and bottom surface,
As shown in FIG. 4(c), a double-concave glass gob 6 having a concave shape as a whole and a convex outer peripheral portion of the lower surface is obtained. Alternatively, as in the case of FIG. 2, the double-concave glass gob 6 can be obtained by inverting the sheet glass member and performing the same process. The concave surface thus obtained has very good surface roughness. Also,
The shape of the concave surface is constant without variation.
【００２２】他の実施例を示す図５について説明する。
図１〜図４ではいずれも軸対称な形状のガラスゴブの製
造方法の実施例について述べた。図５では、軸対称では
ない形状として、ｆθレンズを成形するためのガラスゴ
ブの実施例について述べる。FIG. 5 showing another embodiment will be explained. In FIGS. 1 to 4, embodiments of the method for manufacturing a glass gob having an axially symmetrical shape have been described. In FIG. 5, an example of a glass gob for forming an fθ lens will be described as a shape that is not axially symmetrical.
【００２３】図５には図示していないが、図４と同様に
板状ガラス部材１は、溶融ガラスのノズル１１に対して
移動可能なテーブル上に載置された板状ガラス部材保持
具に置かれている。板状ガラス部材１は直方体の形状を
している。図５（ａ）で示すように、ガラスの溶融炉（
図示せず）と連通するノズル１１の下に板状ガラス部材
移動装置を設置する。Although not shown in FIG. 5, similarly to FIG. 4, the plate glass member 1 is placed on a plate glass member holder placed on a table movable relative to the molten glass nozzle 11. It has been placed. The plate glass member 1 has a rectangular parallelepiped shape. As shown in Figure 5(a), a glass melting furnace (
A sheet glass member moving device is installed under the nozzle 11 communicating with the glass plate (not shown).
【００２４】図示しないヒーターでノズル温度を最適温
度に保持すると溶融ガラス２がノズル１１より流出する
。ノズル温度とノズル寸法を選ぶことにより溶融ガラス
２の流出量は一定にコントロールできる。板状ガラス部
材移動装置で前記板状ガラス部材１を矢印の方向に直線
運動を行う。板状ガラス部材１上に流出した溶融ガラス
２は、その熱量で板状ガラス部材１の上面の表面を溶融
させてガラス部材１と一体になると共に、その上面の空
気と接する自由面は表面張力により凸面形状になる。When the nozzle temperature is maintained at an optimum temperature using a heater (not shown), the molten glass 2 flows out from the nozzle 11. By selecting the nozzle temperature and nozzle dimensions, the flow rate of the molten glass 2 can be controlled to be constant. A plate glass member moving device linearly moves the plate glass member 1 in the direction of the arrow. The molten glass 2 that has flowed onto the plate glass member 1 uses its heat to melt the upper surface of the plate glass member 1 and become integrated with the glass member 1, and the free surface of the upper surface in contact with the air is affected by surface tension. This results in a convex shape.
【００２５】板状ガラス部材移動装置の矢印の方向の直
線運動の速度を板状ガラス部材１の中央部で遅くするよ
うに制御すれば、溶融ガラス２により板状ガラス部材１
上には、その長手方向において凸面が形成される。図１
に示す実施例の場合のように、板状ガラス部材１を反転
して反対面に溶融ガラスを滴下する。この場合、板状ガ
ラス部材移動装置の矢印の方向の直線運動の速度を、板
状ガラス部材１の中央部で速くするように制御すれば、
ガラス部材１上には図示の如く凹面形状を形成でき、片
凸片凹の長尺ガラスゴブ７が得られる。このようにして
得られた両面は非常に面粗度の良好な面である。また、
両面の形状はばらつきがなく一定である。If the speed of linear movement of the plate glass member moving device in the direction of the arrow is controlled to be slow at the center of the plate glass member 1, the molten glass 2 can move the plate glass member 1 more slowly.
A convex surface is formed on the top in its longitudinal direction. Figure 1
As in the case of the embodiment shown in , the plate glass member 1 is turned over and molten glass is dropped onto the opposite surface. In this case, if the speed of the linear movement of the sheet glass member moving device in the direction of the arrow is controlled to be faster at the center of the sheet glass member 1,
A concave shape can be formed on the glass member 1 as shown in the figure, and a long glass gob 7 having a concave and convex shape can be obtained. Both surfaces thus obtained have very good surface roughness. Also,
The shapes on both sides are constant without variation.
【００２６】[0026]
【発明の効果】以上のように、本発明はまず、ガラス材
料で板状の部材を作り、その部材で同種の溶融ガラスを
受け、滑らかな表面を持った最終形状に近い成形用ガラ
スゴブを得る手段を用いるものであるため、ガラスゴブ
作成のための研磨を必要とせずコスト低減に効果がある
のみならず、異物付着の無い面粗度が良好な状態に仕上
げることができ、異物付着による金型表面への傷をつけ
ることもなくなり金型寿命の改善ができる。[Effects of the Invention] As described above, the present invention first makes a plate-shaped member from a glass material, receives molten glass of the same type with the member, and obtains a molding glass gob with a smooth surface close to the final shape. Since it uses a method, it is not only effective in reducing costs as there is no need for polishing to create glass gobs, but it is also possible to finish the surface with good surface roughness without adhesion of foreign matter, and prevent molds from adhesion of foreign matter. There will be no scratches on the surface and the life of the mold can be improved.
【図面の簡単な説明】[Brief explanation of the drawing]
【図１】（ａ）は、本発明の第１の実施例において、溶
融ガラスがノズルより滴下し始めた状態図。
（ｂ）は、一定量の溶融ガラスがノズルより滴下した状
態図。
（ｃ）は、滴下した溶融ガラスと板状ガラス部材とで、
平凸ガラスゴブが形成された状態図。FIG. 1(a) is a state diagram in which molten glass begins to drip from a nozzle in a first embodiment of the present invention. (b) is a state diagram in which a certain amount of molten glass is dripped from a nozzle. (c) is the dropped molten glass and the plate glass member,
A state diagram showing the formation of a plano-convex glass gob.
【図２】（ａ）は、本発明の第２の実施例において、溶
融ガラスがノズルより滴下し始めた状態図。
（ｂ）は、一定量の溶融ガラスがノズルより滴下した状
態図。
（ｃ）は、滴下した溶融ガラスと平凸ガラスゴブとで、
両凸ガラスゴブが形成された状態図。FIG. 2(a) is a diagram showing a state in which molten glass begins to drip from a nozzle in the second embodiment of the present invention. (b) is a state diagram in which a certain amount of molten glass is dripped from a nozzle. (c) shows the dropped molten glass and the plano-convex glass gob.
A state diagram in which a biconvex glass gob is formed.
【図３】（ａ）は、本発明の第３の実施例において、溶
融ガラスがノズルより滴下し始めた状態図。
（ｂ）は、一定量の溶融ガラスがノズルより滴下した状
態図。
（ｃ）は、滴下した溶融ガラスと板状ガラス部材とで、
両凸ガラスゴブが形成された状態図。FIG. 3(a) is a state diagram in which molten glass begins to drip from a nozzle in the third embodiment of the present invention. (b) is a state diagram in which a certain amount of molten glass is dripped from a nozzle. (c) is the dropped molten glass and the plate glass member,
A state diagram in which a biconvex glass gob is formed.
【図４】（ａ）は、本発明の第４の実施例において、溶
融ガラスが板状ガラス部材の外周部に、ノズルより滴下
し始めた状態図。
（ｂ）は、板状ガラス部材を回転しつつ、その外周部に
溶融ガラスを連続供給している状態図。
（ｃ）は、滴下した溶融ガラスと板状ガラス部材とで、
両凹ガラスゴブが形成された状態図。FIG. 4(a) is a diagram showing a state in which molten glass begins to drip from a nozzle onto the outer circumference of a sheet glass member in the fourth embodiment of the present invention. (b) is a state diagram in which molten glass is continuously supplied to the outer peripheral portion of the plate glass member while rotating the plate glass member. (c) is the dropped molten glass and the plate glass member,
A diagram showing a state in which a double-concave glass gob is formed.
【図５】（ａ）は、本発明の第５の実施例において、板
状ガラス部材の一面に長手方向に溶融ガラスを供給する
状態図。
（ｂ）は、板状ガラス部材の他面に長手方向に凹のガラ
スゴブの製造状態図。
（ｃ）は、片面凸、片面凹で軸非対称な形状のガラスゴ
ブが形成された状態図。FIG. 5(a) is a diagram showing a state in which molten glass is supplied to one surface of a sheet glass member in the longitudinal direction in the fifth embodiment of the present invention. (b) is a manufacturing state diagram of a glass gob which is concave in the longitudinal direction on the other surface of the sheet glass member. (c) is a state diagram in which a glass gob having an axially asymmetrical shape with one side convex and one side concave is formed.
１ 板状ガラス部材 ２ 溶融ガラス ３ 平凸ガラスゴブ ４ 両凸ガラスゴブ ５ 両凸ガラスゴブ ６ 両凹ガラスゴブ ７ 長尺ガラスゴブ １１ ノズル ２１ 板状ガラス部材保持具 ２２ 板状ガラス部材移動装置 1 Plate glass member 2. Molten glass 3. Flat convex glass gob 4 Double-convex glass gob 5 Double-convex glass gob 6 Double concave glass gob 7 Long glass gob 11 Nozzle 21 Plate glass member holder 22 Plate glass member moving device
Claims (7)
と同種の溶融ガラスを供給して形成したガラスゴブ。1. A glass gob formed by supplying a sheet glass member with molten glass of the same type as the sheet glass member.
部材と同種の溶融ガラスを供給する工程と、前記溶融ガ
ラスの熱量で前記板状ガラス部材と前記溶融ガラスとを
一体化する工程からなるガラスゴブの製造方法。2. A step of supplying molten glass of the same type as the sheet glass member onto the sheet glass member, and a step of integrating the sheet glass member and the molten glass using the heat of the molten glass. A method for manufacturing glass gobs.
製作されていることを特徴とする請求項２記載のガラス
ゴブの製造方法。3. The method for manufacturing a glass gob according to claim 2, wherein the sheet glass member is manufactured by a stress fracturing method.
部材と同種の溶融ガラスを供給する工程と、前記溶融ガ
ラスの熱量で前記板状ガラス部材と前記溶融ガラスとを
一体化する工程が、前記板状ガラス部材の両面で実施さ
れるガラスゴブの製造方法。4. A step of supplying molten glass of the same type as the sheet glass member onto the sheet glass member, and a step of integrating the sheet glass member and the molten glass using the heat of the molten glass. . A method for manufacturing a glass gob, which is carried out on both sides of the plate glass member.
るノズルとの間に相対的移動を与えつつ、前記板状ガラ
ス部材に溶融ガラスを供給することを特徴とする請求項
２記載のガラスゴブの製造方法5. The glass gob according to claim 2, wherein molten glass is supplied to the plate glass member while giving relative movement between the plate glass member and a nozzle for supplying the molten glass. Production method
板状ガラス部材と同種の溶融ガラスの供給手段とからな
るガラスゴブの製造装置6. A glass gob manufacturing apparatus comprising means for holding a plate glass member and means for supplying molten glass of the same type as the plate glass member.
板状ガラス部材と同種の溶融ガラスの供給手段に対して
移動可能なテーブル上に保持し可動する請求項６記載の
ガラスゴブの製造装置7. The glass gob manufacturing apparatus according to claim 6, wherein the means for holding the plate glass member is held on a table movable relative to the supply means for molten glass of the same type as the plate glass member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4331491A JPH0764568B2 (en) | 1991-03-08 | 1991-03-08 | Glass gob and method and apparatus for manufacturing glass gob |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4331491A JPH0764568B2 (en) | 1991-03-08 | 1991-03-08 | Glass gob and method and apparatus for manufacturing glass gob |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04280820A true JPH04280820A (en) | 1992-10-06 |
| JPH0764568B2 JPH0764568B2 (en) | 1995-07-12 |
Family
ID=12660347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4331491A Expired - Fee Related JPH0764568B2 (en) | 1991-03-08 | 1991-03-08 | Glass gob and method and apparatus for manufacturing glass gob |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0764568B2 (en) |
-
1991
- 1991-03-08 JP JP4331491A patent/JPH0764568B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0764568B2 (en) | 1995-07-12 |
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