[go: up one dir, main page]

JP3707818B2 - Molten glass flow control device and glass product manufacturing method - Google Patents

Molten glass flow control device and glass product manufacturing method Download PDF

Info

Publication number
JP3707818B2
JP3707818B2 JP02486995A JP2486995A JP3707818B2 JP 3707818 B2 JP3707818 B2 JP 3707818B2 JP 02486995 A JP02486995 A JP 02486995A JP 2486995 A JP2486995 A JP 2486995A JP 3707818 B2 JP3707818 B2 JP 3707818B2
Authority
JP
Japan
Prior art keywords
tip
molten glass
pipe
tip portion
single flange
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 - Fee Related
Application number
JP02486995A
Other languages
Japanese (ja)
Other versions
JPH08217463A (en
Inventor
和雄 田中
寛 福島
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.)
Hoya Corp
Original Assignee
Hoya Corp
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 Hoya Corp filed Critical Hoya Corp
Priority to JP02486995A priority Critical patent/JP3707818B2/en
Publication of JPH08217463A publication Critical patent/JPH08217463A/en
Application granted granted Critical
Publication of JP3707818B2 publication Critical patent/JP3707818B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • 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
    • C03B7/08—Feeder spouts, e.g. gob feeders
    • C03B7/094—Means for heating, cooling or insulation
    • C03B7/096—Means for heating, cooling or insulation for heating
    • C03B7/098—Means for heating, cooling or insulation for heating electric

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Flow Control (AREA)

Description

【０００１】
【産業上の利用分野】
本発明は溶融ガラスを成形型に供給するときに流量を調節するための溶融ガラスの流量調節装置及びガラス製品の製造方法に関し、特に加熱調整によって流量を調節する機能を有する溶融ガラスの流量調節装置及びガラス製品の製造方法に関する。
【０００２】
【従来の技術】
従来、溶融ガラスの流量調節装置では、白金等の導電性の高い金属で形成されたパイプを使用して、溶融ガラス槽内の光学用の溶融ガラスを成形型に供給するようにしている。この場合、パイプに適度な電流を流してパイプ全体を加熱することにより、パイプ内の溶融ガラスの流量を調節するようにしている。
【０００３】
しかし、パイプの先端部は、空気に触れやすい場所なので、流動する溶融ガラスの温度が低下しやすい。このため、パイプの先端部では、溶融ガラスの一部が失透（結晶化）して、パイプの内側で固まってしまい、その結果、溶融ガラスの通路が狭くなって流量が低下するという問題が生じる。
【０００４】
このような欠点をなくす技術として、特公平４−２７１７４号で示されている流量調節装置がある。
図２はこの従来の流量調節装置の構成を示す図である。この流量調節装置では、パイプ２１の下側部２１ｂを、保温材２２で保護される上側部２１ａよりも径を細くすることによって、電気抵抗を高めている。ここで、交流電源２４によってパイプ２１に電流を流すと、下側部２１ｂの方が上側部２１ａよりも発熱量が多くなり、先端部２１ｃにおける溶融ガラス２３の失透が防止される。
【０００５】
【発明が解決しようとする課題】
しかし、このような技術では、パイプ形状は設計された寸法で固定されているため、下側部２１ｂと上側部２１ａの発熱量の比率は固定され、状況に応じて微調整を行うことができない。このため、溶融ガラス２３の流量と失透防止とのバランスがうまくとれないという問題点があった。
【０００６】
本発明はこのような点に鑑みてなされたものであり、溶融ガラスの流量を最適な状態に保持しながら、パイプ先端部分の失透を確実に防止することができる溶融ガラスの流量調節装置を提供することを目的とする。
【０００７】
【課題を解決するための手段】
本発明では上記課題を解決するために、溶融ガラスを成形型に供給するときに流量を調節するための溶融ガラスの流量調節装置において、溶融ガラス槽と連結され前記溶融ガラスを前記成形型に導くパイプと、前記パイプの先端部を除く大部分を加熱するメイン加熱手段と、前記メイン加熱手段とは独立して前記パイプの前記先端部を加熱する先端部加熱手段と、を有し、前記先端部加熱手段は、電源と、前記パイプの前記先端部の外周に取り付けられた単一のフランジ部と、前記単一のフランジ部に連結された一対の通電部材と、を有し、前記一対の通電部材に前記電源が接続され、前記電源から供給される電流を前記単一のフランジ部を含む前記一対の通電部材間に流して前記先端部を加熱することを特徴とする溶融ガラスの流量調節装置が提供される。
【０００８】
【作用】
メイン加熱手段は、パイプの先端部以外の大部分を加熱し、全体の流量を調節する。一方、先端部加熱手段は、先端部を独立して加熱し、先端部での溶融ガラスの失透を防止する。
【０００９】
これによって、溶融ガラスの流量を最適な状態に保持しながら、パイプ先端部分の失透を確実に防止することができる。
【００１０】
【実施例】
以下、本発明の一実施例を図面に基づいて説明する。
図１は本実施例の溶融ガラスの流量調節装置の構成を示す断面図である。溶融ガラスの流量調節装置１は、パイプ２を中心として構成されている。パイプ２は、白金またはパラジウム等の導電性の高い金属で形成されている。あるいは、これらの金属を含む合金でもよい。パイプ２の下側部３は、本体部２ａとは別体に形成されたものであり、パイプ２と同様に白金またはパラジウム等で形成されている。パイプ２は、図示されていない溶融ガラス槽と接続されており、この溶融ガラス槽からの光学用の溶融ガラス４を、下方に設置された図示されていない成形型に供給する。また、パイプ２の本体部２ａは、図示されていない保温材で覆われている。
【００１１】
パイプ２の下側部３は、その先端部３ａにフランジ部３ｂが形成されている。このフランジ部３ｂは、水平面に対してほぼ４５°上方に向くように形成されている。また、下側部３には、本体部２ａとの接合部付近にフランジ部３ｃが形成されている。このフランジ部３ｃは、フランジ部３ｂと同様に、水平面に対してほぼ４５°上方に向くように形成されている。これらフランジ部３ｂおよび３ｃは、先端部３ａ全体を旋盤加工することにより形成されている。
【００１２】
下側部３のフランジ部３ｃには、導電性を有する連結部材５が接合されている。連結部材５の本体部５ａは、ほぼ円筒状に形成されており、その下側縁端部がフランジ部３ｃの縁端部とろう付け等によって接合されている。また、連結部材５の本体部５ａには、通電部材５ｂの一端が接合されている。この通電部材５ｂの他端は、交流電源６と接続されている。また、パイプ２の上側端部付近には、通電部材５ｃの一端が接合されている。この通電部材５ｃの他端は、交流電源６と接続されている。交流電源６は、通電部材５ｂおよび５ｃを介して、パイプ２の本体部２ａに交流電流を供給する。なお、交流電源６の出力は、図示されていない制御回路等によって所望値に可変制御される。
【００１３】
一方、下側部３の先端側のフランジ部３ｂには、導電性を有する連結部材７が接合されている。連結部材７の本体部７ａは、その下側縁端部がフランジ部３ｂの縁端部と同じ径の円形になっており、ろう付け等によってフランジ部３ｂと接合されている。また、連結部材７の本体部７ａの図面左右端には、それぞれ水平方向に延びる通電部材７ｂ，７ｃが一体に形成されている。これら通電部材７ｂ，７ｃは、交流電源８と接続されている。交流電源８は、通電部材７ｂ，７ｃおよびフランジ部３ｂを介して、パイプ２の下側部３の先端部３ａに交流電流を供給する。なお、交流電源８の出力は、図示されていない制御回路等によって所望値に可変制御される。
【００１４】
このような構成の溶融ガラスの流量調節装置１は、交流電源６の出力を制御することにより、パイプ２の本体部２ａの大部分に例えば２００Ａ程度の電流を供給する。これにより、本体部２ａは、例えば１０００°Ｃに加熱保持される。この温度を維持させることにより、パイプ２内を流れる溶融ガラス４は、安定した粘度となり、最適な流量に保持される。
【００１５】
一方、下側部３では、交流電源８の出力を制御することにより、先端部３ａのみに例えば２００Ａ程度の電流を供給する。これにより、先端部３ａは、本体部２ａと同じ１０００°Ｃに加熱保持される。通常、先端部３ａは、保温材に覆われておらず、また、空気に触れやすい状態にあるため、本体部２ａよりも温度が低下しやすい。このため、先端部３ａ付近では、溶融ガラス４の温度が低下し、長時間の使用により失透して先端部３ａの内側に固着するおそれがある。しかし、本実施例のように、先端部３ａを本体部２ａとは独立して加熱することにより、先端部３ａ付近での失透を極力防止することができる。また、その一方で、溶融ガラス４全体の流量は、交流電源６の電流制御によって最適な状態に維持できる。
【００１６】
さらに、微少量の失透が長時間の作業で蓄積し、それを除去する必要が生じた場合には、先端部３ａのみを失透除去用の高温度（１１００°Ｃ程度）にする。このとき、パイプ２の本体部２ａ側は高温度にする必要がない。このため、溶融ガラス４の流量にほとんど影響を与えないので、失透除去後の作業復帰が短時間となる。
【００１７】
本願発明者の実験では、失透の除去のサイクルは、例えば従来の流量調節装置では４時間に１回の割合で必要だったものが、本実施例の装置では３日に１回でよくなった。さらに、その失透除去作業の時間も、従来が約５分必要だったものが、本実施例では１分程度で済むようになった。
【００１８】
また、本実施例では、先端部３ａに上方を向くフランジ部３ｂを形成し、そのフランジ部３ｂを介して電流供給用の連結部材７を接続するようにしたので、下方に向かう溶融ガラス４が連結部材７側に伝わるのを防止することができる。
【００２０】
また、本実施例では、加熱用の電源として、交流電源６，８を使用したが、都合により直流電源を使用してもよい。
【００２１】
【発明の効果】
以上説明したように本発明では、メイン加熱手段により、パイプの先端部以外の大部分を加熱して全体の流量を調節する一方、先端部加熱手段により、先端部を独立して加熱して先端部での溶融ガラスの失透を防止するようにしたので、溶融ガラスの流量を最適な状態に保持しながら、パイプ先端部分の失透を確実に防止することができる。
【００２２】
また、万一失透が起こっても、失透の起こる先端部のみを加熱すればよいので、溶融ガラスの流量にほとんど影響を与えない。したがって、失透の除去作業の時間が短縮される。
【図面の簡単な説明】
【図１】本実施例の溶融ガラスの流量調節装置の構成を示す断面図である。
【図２】従来の流量調節装置の構成を示す図である。
【符号の説明】
１ 溶融ガラスの流量調節装置
２ パイプ
２ａ 本体部
３ 下側部
３ａ 先端部
３ｂ フランジ部
４ 溶融ガラス
６，８ 交流電源
７ 連結部材[0001]
[Industrial application fields]
The present invention is the flow rate of molten glass having a function of adjusting the flow rate relates to a manufacturing method of the flow rate control instrumentation 置及 beauty glassware molten glass for regulating the flow rate when supplying the molten glass into a mold, in particular by heating adjustment a method for manufacturing a regulation instrumentation 置及 beauty glass products.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a molten glass flow rate control device uses a pipe made of a highly conductive metal such as platinum to supply molten glass for optics in a molten glass tank to a mold. In this case, the flow rate of the molten glass in the pipe is adjusted by supplying an appropriate current to the pipe to heat the entire pipe.
[0003]
However, since the tip portion of the pipe is easily exposed to air, the temperature of the flowing molten glass tends to decrease. For this reason, at the tip of the pipe, a part of the molten glass is devitrified (crystallized) and hardens inside the pipe, resulting in a problem that the passage of the molten glass becomes narrow and the flow rate decreases. Arise.
[0004]
As a technique for eliminating such drawbacks, there is a flow rate adjusting device shown in Japanese Patent Publication No. 4-27174.
FIG. 2 is a diagram showing the configuration of this conventional flow rate adjusting device. In this flow control device, the electric resistance is increased by making the lower side portion 21 b of the pipe 21 thinner than the upper side portion 21 a protected by the heat insulating material 22. Here, when a current is passed through the pipe 21 by the AC power source 24, the lower side portion 21b generates more heat than the upper side portion 21a, and the devitrification of the molten glass 23 at the tip end portion 21c is prevented.
[0005]
[Problems to be solved by the invention]
However, in such a technique, since the pipe shape is fixed at the designed dimension, the ratio of the calorific value of the lower side portion 21b and the upper side portion 21a is fixed, and fine adjustment cannot be performed according to the situation. . Therefore, there is a problem that the balance between the flow rate of the molten glass 23 and the prevention of devitrification cannot be well balanced.
[0006]
The present invention has been made in view of the above points, and a molten glass flow rate adjusting device capable of reliably preventing devitrification of a pipe tip portion while maintaining an optimal flow rate of the molten glass. The purpose is to provide.
[0007]
[Means for Solving the Problems]
In the present invention, in order to solve the above-mentioned problem, in a molten glass flow rate adjusting device for adjusting a flow rate when molten glass is supplied to a mold, the molten glass is connected to a molten glass tank to guide the molten glass to the mold. comprises a pipe, a main heating means for heating the most except for the tip portion of the pipe, and a pressurized heat tip heating means said distal end portion of the pipe independently of the main heating means, the The tip portion heating means includes a power source, a single flange portion attached to the outer periphery of the tip portion of the pipe, and a pair of current-carrying members connected to the single flange portion, is the power in the current-carrying member of the connection, the molten glass, wherein the benzalkonium to heat the tip to flow between the pair of conducting members the current supplied containing said single flange portion from said power supply Flow control equipment There is provided.
[0008]
[Action]
The main heating means heats most of the pipe other than the tip and adjusts the overall flow rate. On the other hand, the tip portion heating means heats the tip portion independently and prevents devitrification of the molten glass at the tip portion.
[0009]
Thereby, devitrification of the pipe tip can be reliably prevented while maintaining the flow rate of the molten glass in an optimum state.
[0010]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing the configuration of the molten glass flow rate adjusting device of this embodiment. The molten glass flow rate adjusting device 1 is configured around a pipe 2. The pipe 2 is made of a highly conductive metal such as platinum or palladium. Alternatively, an alloy containing these metals may be used. The lower side portion 3 of the pipe 2 is formed separately from the main body portion 2a, and is formed of platinum, palladium, or the like, similar to the pipe 2. The pipe 2 is connected to a molten glass tank (not shown), and supplies the optical molten glass 4 from the molten glass tank to a molding die (not shown) installed below. Moreover, the main-body part 2a of the pipe 2 is covered with the heat insulating material which is not shown in figure.
[0011]
The lower portion 3 of the pipe 2 has a flange portion 3b formed at a tip portion 3a thereof. The flange portion 3b is formed so as to face approximately 45 ° upward with respect to the horizontal plane. Further, a flange portion 3c is formed in the lower side portion 3 in the vicinity of the joint portion with the main body portion 2a. Like the flange portion 3b, the flange portion 3c is formed so as to face upward by approximately 45 ° with respect to the horizontal plane. These flange portions 3b and 3c are formed by lathing the entire tip portion 3a.
[0012]
A conductive connecting member 5 is joined to the flange portion 3 c of the lower side portion 3. The main body 5a of the connecting member 5 is formed in a substantially cylindrical shape, and its lower edge is joined to the edge of the flange 3c by brazing or the like. Further, one end of the energizing member 5 b is joined to the main body portion 5 a of the connecting member 5. The other end of the energization member 5b is connected to the AC power source 6. Further, one end of the energizing member 5 c is joined near the upper end of the pipe 2. The other end of the energizing member 5c is connected to the AC power source 6. The AC power supply 6 supplies an AC current to the main body 2a of the pipe 2 via the energizing members 5b and 5c. The output of the AC power supply 6 is variably controlled to a desired value by a control circuit (not shown).
[0013]
On the other hand, a conductive connecting member 7 is joined to the flange portion 3 b on the distal end side of the lower side portion 3. The main body portion 7a of the connecting member 7 has a lower edge that is circular with the same diameter as the edge of the flange 3b, and is joined to the flange 3b by brazing or the like. Further, current-carrying members 7b and 7c extending in the horizontal direction are integrally formed at the left and right ends of the main body portion 7a of the connecting member 7, respectively. These energizing members 7 b and 7 c are connected to an AC power source 8. The AC power supply 8 supplies an AC current to the distal end portion 3a of the lower side portion 3 of the pipe 2 via the energizing members 7b and 7c and the flange portion 3b. The output of the AC power supply 8 is variably controlled to a desired value by a control circuit not shown.
[0014]
The molten glass flow rate adjusting device 1 having such a configuration supplies a current of, for example, about 200 A to most of the main body portion 2 a of the pipe 2 by controlling the output of the AC power source 6. Thereby, the main-body part 2a is heat-held at 1000 degreeC, for example. By maintaining this temperature, the molten glass 4 flowing in the pipe 2 has a stable viscosity and is maintained at an optimum flow rate.
[0015]
On the other hand, in the lower side portion 3, by controlling the output of the AC power supply 8, a current of about 200 A, for example, is supplied only to the tip portion 3a. Thereby, the front-end | tip part 3a is heated and hold | maintained at the same 1000 degreeC as the main-body part 2a. Usually, the tip portion 3a is not covered with a heat insulating material and is in a state where it can easily come into contact with air, so that the temperature tends to be lower than that of the main body portion 2a. For this reason, in the vicinity of the tip 3a, the temperature of the molten glass 4 is lowered, and there is a possibility that the glass will be devitrified due to long-term use and fixed inside the tip 3a. However, devitrification near the tip 3a can be prevented as much as possible by heating the tip 3a independently of the main body 2a as in the present embodiment. On the other hand, the flow rate of the entire molten glass 4 can be maintained in an optimum state by current control of the AC power source 6.
[0016]
Furthermore, when a very small amount of devitrification accumulates over a long period of time and needs to be removed, only the tip 3a is brought to a high temperature for removing devitrification (about 1100 ° C.). At this time, the main body 2a side of the pipe 2 does not need to be at a high temperature. For this reason, since it hardly affects the flow rate of the molten glass 4, the work return after the devitrification removal is short.
[0017]
In the experiments of the present inventor, the cycle of removing devitrification was required once every 4 hours in the conventional flow rate adjusting device, for example, but once in 3 days in the device of this embodiment. It was. Further, the devitrification removing operation takes about 1 minute in the present embodiment, which was about 5 minutes in the prior art.
[0018]
In the present embodiment, the flange portion 3b facing upward is formed at the tip portion 3a, and the connecting member 7 for supplying current is connected via the flange portion 3b. Transmission to the connecting member 7 side can be prevented.
[0020]
In this embodiment, the AC power sources 6 and 8 are used as the power source for heating, but a DC power source may be used for convenience.
[0021]
【The invention's effect】
As described above, in the present invention, the main heating means heats most of the pipe other than the tip part to adjust the overall flow rate, while the tip part heating means independently heats the tip part by the tip heating part. Since devitrification of the molten glass at the portion is prevented, devitrification of the tip portion of the pipe can be reliably prevented while maintaining the flow rate of the molten glass at an optimum state.
[0022]
In addition, even if devitrification occurs, it is only necessary to heat the tip portion where devitrification occurs, so that the flow rate of the molten glass is hardly affected. Therefore, the time for removing devitrification is shortened.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a molten glass flow rate adjusting device according to the present embodiment.
FIG. 2 is a diagram showing a configuration of a conventional flow rate adjusting device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Flow control apparatus 2 of molten glass Pipe 2a Main body part 3 Lower side part 3a Tip part 3b Flange part 4 Molten glass 6, 8 AC power supply 7 Connecting member

Claims (4)

溶融ガラスを成形型に供給するときに流量を調節するための溶融ガラスの流量調節装置において、
溶融ガラス槽と連結され前記溶融ガラスを前記成形型に導くパイプと、
前記パイプの先端部を除く大部分を加熱するメイン加熱手段と、
前記メイン加熱手段とは独立して前記パイプの前記先端部を加熱する先端部加熱手段と、
を有し、
前記先端部加熱手段は、電源と、前記パイプの前記先端部の外周に取り付けられた単一のフランジ部と、前記単一のフランジ部に連結された一対の通電部材と、を有し、前記一対の通電部材に前記電源が接続され、前記電源から供給される電流を前記単一のフランジ部を含む前記一対の通電部材間に流して前記先端部を加熱することを特徴とする溶融ガラスの流量調節装置。In a molten glass flow rate adjusting device for adjusting the flow rate when supplying molten glass to a mold,
A pipe connected to a molten glass tank and guiding the molten glass to the mold,
Main heating means for heating most of the pipe excluding the tip,
A pressurized heat tip heating means said distal end portion of the pipe independently of the main heating means,
Have
The tip portion heating means includes a power source, a single flange portion attached to the outer periphery of the tip portion of the pipe, and a pair of current-carrying members connected to the single flange portion, It said power supply is connected to a pair of conducting members, melting characterized by the Turkey to heat the tip by applying a current to be supplied between the pair of conducting members, including the single flange portion from said power supply Glass flow control device. 前記パイプは、前記先端部に、前記先端部のみに電流を供給するための前記単一のフランジ部が形成されており、
前記単一のフランジ部は、前記先端部から前記成形型に向かう前記溶融ガラスが前記先端部から前記単一のフランジ部の方に伝わらないよう、径が前記先端部から前記溶融ガラスの上流側に向かって徐々に大きくなる形状を有していることを特徴とする請求項１記載の溶融ガラスの流量調節装置。In the pipe, the single flange portion for supplying a current only to the tip portion is formed at the tip portion ,
The single flange portion has a diameter upstream from the tip portion so that the molten glass from the tip portion toward the mold does not travel from the tip portion toward the single flange portion. The apparatus for adjusting a flow rate of molten glass according to claim 1 , wherein the apparatus has a shape that gradually increases toward the surface. 溶融ガラスを溶融ガラス槽と連結されたパイプに導き、成形型に流すことによりガラス製品を製造するガラス製品の製造方法において、In a glass product manufacturing method for manufacturing a glass product by guiding a molten glass to a pipe connected to a molten glass tank and flowing it into a mold,
前記溶融ガラス槽と連結され前記溶融ガラスを前記成形型に導く前記パイプと、前記パイプの先端部を除く大部分を加熱するメイン加熱手段と、前記メイン加熱手段とは独立して前記パイプの前記先端部を加熱する先端部加熱手段と、を有し、前記先端部加熱手段は、電源と、前記パイプの前記先端部の外周に取り付けられた単一のフランジ部と、前記単一のフランジ部に連結された一対の通電部材と、を有し、前記一対の通電部材に前記電源が接続され、前記電源から供給される電流を前記単一のフランジ部を含む前記一対の通電部材間に流して前記先端部を加熱する溶融ガラスの流量調節装置を用い、  The pipe that is connected to the molten glass tank and guides the molten glass to the mold, a main heating means that heats most of the pipe except for the tip, and the main heating means is independent of the main heating means. A tip portion heating means for heating the tip portion, wherein the tip portion heating means includes a power source, a single flange portion attached to an outer periphery of the tip portion of the pipe, and the single flange portion. A pair of current-carrying members coupled to each other, the power source is connected to the pair of current-carrying members, and a current supplied from the power source is passed between the pair of current-carrying members including the single flange portion. Using a molten glass flow rate adjusting device that heats the tip portion,
前記パイプの前記先端部と前記先端部以外の略全体とを独立して加熱し、前記先端部の加熱を前記一対の通電部材および前記単一のフランジ部を介して前記先端部のみに電流を供給して行うことを特徴とするガラス製品の製造方法。  The tip of the pipe and substantially the whole other than the tip are heated independently, and the current of the tip is heated only to the tip via the pair of energizing members and the single flange. A method for producing a glass product, characterized by being performed by supplying. 前記パイプは、前記先端部に形成された前記単一のフランジ部を備え、The pipe includes the single flange portion formed at the tip portion,
前記単一のフランジ部は、前記先端部から前記成形型に向かう前記溶融ガラスが前記先端部から前記単一のフランジ部の方に伝わらないよう、径が前記先端部から前記溶融ガラスの上流側に向かって徐々に大きくなる形状を有し、  The single flange portion has a diameter upstream from the tip portion so that the molten glass from the tip portion toward the mold does not travel from the tip portion toward the single flange portion. Has a shape that gradually increases toward
前記一対の通電部材および前記単一のフランジ部を介して前記先端部のみに電流を供給することを特徴とする請求項３記載のガラス製品の製造方法。  The method for producing a glass product according to claim 3, wherein a current is supplied only to the tip portion through the pair of energizing members and the single flange portion.
JP02486995A 1995-02-14 1995-02-14 Molten glass flow control device and glass product manufacturing method Expired - Fee Related JP3707818B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP02486995A JP3707818B2 (en) 1995-02-14 1995-02-14 Molten glass flow control device and glass product manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02486995A JP3707818B2 (en) 1995-02-14 1995-02-14 Molten glass flow control device and glass product manufacturing method

Publications (2)

Publication Number Publication Date
JPH08217463A JPH08217463A (en) 1996-08-27
JP3707818B2 true JP3707818B2 (en) 2005-10-19

Family

ID=12150222

Family Applications (1)

Application Number Title Priority Date Filing Date
JP02486995A Expired - Fee Related JP3707818B2 (en) 1995-02-14 1995-02-14 Molten glass flow control device and glass product manufacturing method

Country Status (1)

Country Link
JP (1) JP3707818B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948634B4 (en) * 1999-10-01 2005-02-03 Reeßing, Friedrich, Dr.rer.nat. Conditioner for molten glass with optimized electrical heating and improved thermal homogeneity of the glass
DE10108831C1 (en) 2001-02-23 2002-06-13 Omg Ag & Co Kg Electrically heated feed nozzle for a glass melt used in the glass industry for melting and molding special glass comprises a cylindrical heating ring arranged coaxially around a cylindrical end piece made from platinum group metal material

Also Published As

Publication number Publication date
JPH08217463A (en) 1996-08-27

Similar Documents

Publication Publication Date Title
US5994659A (en) Method and apparatus for welding with preheated filler material
JPS6297773A (en) Method and device for controlling temperature of continuously fed wire
JP2012501082A (en) Method of soldering contact wires to solar cells
WO2018200237A1 (en) Fusion draw apparatus and method of making a glass ribbon
JP3707818B2 (en) Molten glass flow control device and glass product manufacturing method
US6010741A (en) Apparatus and method for controlling the coating thickness of an optical glass fiber
JP5743081B2 (en) Heat control method and apparatus for hot wire welding
US6427492B1 (en) Bushing including a terminal ear
ES2135194T3 (en) PROCEDURE AND DEVICE FOR THE MANUFACTURE OF ELECTRODE THREAD FOR ELECTROEROSION.
EP0748773A3 (en) Method for controlling the heating of a glass-melting tank furnace
SE511463C2 (en) Method of arc welding with melting electrode
TW357137B (en) Method and apparatus for controlling heating and cooling in segments of a fiber glass bushing
JP2011051007A (en) Ultrasonic soldering device
JPS6072684A (en) Tig arc welding torch
US4285711A (en) Method and apparatus for the production of glass fibres
JP3046694B2 (en) Molten glass outflow equipment
JPH0427174B2 (en)
JP2010227947A (en) Arc welding apparatus, welding robot and arc welding method
CN115667161A (en) Improved slot drawing process
JPS6011235A (en) Method and device for forming glass plate
JPS62153137A (en) How to draw optical fiber
JPH04187372A (en) Thermal press adhesion tool
JPH10115721A (en) Drawing device for plastic optical fiber
JP2662089B2 (en) Soldering equipment
KR100232594B1 (en) Bump equalization device of semiconductor chip and bump equalization method using same

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040921

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040928

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20041126

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20050510

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050707

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20050713

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: 20050802

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050802

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

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

Free format text: PAYMENT UNTIL: 20080812

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20090812

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20100812

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20110812

Year of fee payment: 6

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

Free format text: PAYMENT UNTIL: 20110812

Year of fee payment: 6

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

Free format text: PAYMENT UNTIL: 20120812

Year of fee payment: 7

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

Free format text: PAYMENT UNTIL: 20120812

Year of fee payment: 7

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

Free format text: PAYMENT UNTIL: 20130812

Year of fee payment: 8

LAPS Cancellation because of no payment of annual fees