JP2662300B2 - Manufacturing method and apparatus for glass molded product - Google Patents

Manufacturing method and apparatus for glass molded product

Info

Publication number
JP2662300B2
JP2662300B2 JP27817389A JP27817389A JP2662300B2 JP 2662300 B2 JP2662300 B2 JP 2662300B2 JP 27817389 A JP27817389 A JP 27817389A JP 27817389 A JP27817389 A JP 27817389A JP 2662300 B2 JP2662300 B2 JP 2662300B2
Authority
JP
Japan
Prior art keywords
molten glass
molded product
molding
sleeve
glass
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
JP27817389A
Other languages
Japanese (ja)
Other versions
JPH03141126A (en
Inventor
弘 伊藤
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.)
Olympus Corp
Original Assignee
Olympus 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 Olympus Corp filed Critical Olympus Corp
Priority to JP27817389A priority Critical patent/JP2662300B2/en
Publication of JPH03141126A publication Critical patent/JPH03141126A/en
Application granted granted Critical
Publication of JP2662300B2 publication Critical patent/JP2662300B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • C03B11/12—Cooling, heating, or insulating the plunger, the mould, or the glass-pressing machine; cooling or heating of the glass in the mould
    • 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
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/70—Horizontal or inclined press axis

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)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ガラス成形品の製造方法および装置に係る
ものであり、特に研削、研磨加工を必要としない高精度
なガラス成形品の製造方法および装置に関する。Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for producing a glass molded product, and particularly to a method for producing a highly accurate glass molded product which does not require grinding and polishing. And equipment.

〔従来の技術〕[Conventional technology]

最近、ガラス素材を加熱し押圧形成だけで、研削，研
磨加工を必要としない高い形状精度と表面品質を有する
ガラス成形品（プレスレンズ）の製造方法が確立されつ
つある。Recently, a method of manufacturing a glass molded product (press lens) having high shape accuracy and surface quality which does not require grinding and polishing by heating and pressing the glass material alone is being established.

かかる製造方法としては、すでに実用化されているダ
イレクトプレス方式を応用した製造方法が考えられる。
この方法は、第３図a,b,cにて示すごとく、図示を省略
しているガラス溶融炉のオリフィス31より10〜103ボア
ズの粘度で溶融ガラスを32を流出させ、この溶融ガラス
32を一対の板状シャー33,34にて切断して溶融ガラス塊
（以下ゴブと称する）35をガラス転移点温度以下の比較
的低温の下型36,胴型37にて受けとめるとともに上型
（図示省略）を介し押圧成形してガラス成形品を製造す
る方法である。As such a manufacturing method, a manufacturing method using a direct press method which has already been put to practical use can be considered.
This method, FIG. 3 a, b, as shown by c, drained 32 molten glass viscosity orifice 31 from 10 to 10 3 Boaz glass melting furnace which is not shown, the molten glass
32 is cut by a pair of plate shears 33 and 34 and a molten glass lump (hereinafter referred to as a gob) 35 is received by a lower mold 36 and a lower mold 37 having a relatively low temperature below the glass transition point temperature, and an upper mold ( This is a method of producing a glass molded product by press-molding via a not-shown illustration).

上記ダイレクトプレス方式によりガラス成形品の製造
方法によれば、溶融ガラスをそのまま金型に受けて成形
できるという利点があるが、この方式の場合には、第３
図a,cにて示すごとく、一対の板状シャー33,34にて切断
する際にゴブ35の上下部にシャーマーク38と称される空
気の小泡が不可避的に巻き込まれるという極めて大きな
欠点があった。そのために、成形後のガラス成形品の機
能面にシャーマーク38が消えずに残り、かかる理由から
ダイレクトプレス方式は多くの利点を有しながらも、後
加工が不必要なガラス成形品の製造方法として顧みられ
なかった。According to the method for producing a glass molded product by the direct press method, there is an advantage that the molten glass can be directly received in a mold and molded, but in this method, the third method is used.
As shown in FIGS. A and c, an extremely large drawback that small bubbles of air called shear marks 38 are inevitably caught in the upper and lower portions of the gob 35 when cutting with the pair of plate-shaped shears 33 and 34. was there. For this reason, the shear mark 38 remains on the functional surface of the molded glass article after molding, and for this reason, the direct press method has many advantages, but a method of manufacturing a glass molded article that does not require post-processing. Was not respected.

従って、例えば、特公昭61−32263号公報に開示され
るような、研削および研磨加工により表面粗さの向上し
たプリフォームを成形する方法が一般に用いられてい
る。Therefore, for example, a method of forming a preform having improved surface roughness by grinding and polishing as disclosed in Japanese Patent Publication No. 32263/1986 is generally used.

また、前記ダイレクトプレス方式の欠点を解決すべ
く、以下の様な発明が開示されている。Further, the following inventions are disclosed in order to solve the drawbacks of the direct press system.

例えば、特開昭63−248727号公報記載の発明において
は、リング状の胴型シャーと成形型によりオリフィスか
ら流出させた溶融ガラスの下端部に存在するシャーマー
ク部分が含まれないように切断した後、前記胴型シャー
内の成形型と前記成形型とで成形し、成形されたガラス
成形品の外周部のみシャーマークが生じ、機能面にはシ
ャーマークを全く生じさせない方法が提案されている。For example, in the invention described in Japanese Patent Application Laid-Open No. 63-248727, a ring-shaped barrel shear and a mold were cut so as not to include a shear mark portion present at the lower end of the molten glass discharged from the orifice. Thereafter, a method has been proposed in which a shaping mark is formed only on the outer peripheral portion of the formed glass molded product, and a shading mark is not generated on the functional surface at all, using a shaping mold and the shaping mold in the shaping mold. .

〔発明が解決しようとする課題〕[Problems to be solved by the invention]

しかるに、前記従来技術には以下の様な問題がある。 However, the conventional technique has the following problems.

特公昭61−32263号公報記載の発明については、溶融
ガラス直接成形してガラス成形品を得る前記ダイレクト
プレス方式による製造方法に比較して工程が複雑化し、
高価なガラス成形品になるという問題を有している。For the invention described in JP-B-61-32263, the process becomes complicated as compared with the production method by the direct press method of directly molding a molten glass to obtain a glass molded product,
There is a problem that it becomes an expensive glass molded product.

また、特開昭63−248727号公報記載の発明について
は、前記ダイレクトプレス方式としたことで、製造コス
トの低減は図られるものの、胴型シャーは溶融ガラスと
の融着を避けるためにガラスの転移点温度以下の比較的
低温領域に保持しなければならない。一方、成形型の温
度は成形品の面精度を向上させるためにガラスの転移点
温度あるいはそれ以上の温度領域とする必要がある。こ
のため、胴型シャーと成形型の温度制御機構が複雑とな
り、機械コストの増大や品質の劣化をもたらす。また、
溶融ガラスの下端部に存在するシャーマーク部分を成形
毎に切断して捨てるために、溶融ガラスの無駄が生じ
る。Also, with respect to the invention described in JP-A-63-248727, although the production cost is reduced by adopting the direct press method, the body-type shear is formed of glass in order to avoid fusion with molten glass. It must be kept in a relatively low temperature region below the transition temperature. On the other hand, the temperature of the mold needs to be in a temperature range of a glass transition temperature or higher in order to improve the surface accuracy of a molded product. For this reason, the temperature control mechanism of the body shear and the molding die becomes complicated, resulting in an increase in machine cost and deterioration in quality. Also,
Since the shear mark portion existing at the lower end of the molten glass is cut and discarded at each molding, waste of the molten glass occurs.

因って、本発明は上記従来技術の問題点に鑑み開発さ
れたもので、シャーマークをガラス成形品の機能面に生
じさせず溶融ガラスを成形毎に捨てる無駄を廃し、後加
工を必要としない高精度のガラス成形品が製造できるダ
イレクトプレス方式を採用することにより、工程を大幅
に簡素化するとともに短時間成形を可能としたことで製
造コストが大幅に削減できるガラス成形品の製造方法お
よび装置の提供を目的とする。Therefore, the present invention was developed in view of the above-mentioned problems of the prior art, and eliminates the waste of discarding molten glass every molding without forming a shear mark on the functional surface of a glass molded product, and requires post-processing. By adopting a direct press method that can produce high-precision glass molded products that do not greatly simplify the process and enable molding in a short time, the production method of glass molded products that can greatly reduce the production cost and The purpose is to provide the device.

〔課題を解決するための手段〕[Means for solving the problem]

本発明は、一対の成形型を滑動自在に嵌挿したスリー
ブ上側面に溶融ガラス塊投入口を設け、該溶融ガラス塊
投入口上方に位置するオリフィスからの溶融ガラス塊を
前記成形型間に投入した後、該成形型と溶融ガラス塊と
をスリーブ内で移送し、前記溶融ガラス塊投入口を避け
て押圧成形を行う。また、上側面に溶融ガラス塊投入口
を設けたスリーブと、該スリーブに嵌挿された滑動自在
な一対の成形型と、該成形型を移送しかつ加圧する加圧
手段と、前記溶融ガラス塊投入口上方に配設されたオリ
フィスと、該オリフィスと前記溶融ガラス塊投入口の間
に設けオリフィスからの溶融ガラスを切断する切断手段
とからなるものである。The present invention provides a molten glass lump input port on an upper side surface of a sleeve in which a pair of molding dies is slidably inserted, and a molten glass lump from an orifice located above the molten glass lump insertion port is injected between the molding dies. After that, the molding die and the molten glass lump are transferred in the sleeve, and press molding is performed avoiding the molten glass lump inlet. A sleeve provided with a molten glass lump input port on an upper surface thereof, a pair of slidable molding dies fitted into the sleeve, pressure means for transferring and pressing the molding dies; The orifice is disposed above the inlet, and cutting means is provided between the orifice and the molten glass lump inlet to cut molten glass from the orifice.

〔作用〕[Action]

本発明によるガラス成形品の製造方法及び装置によれ
ば、ダイレクトプレス方式により成形を行う際、シャー
マークをガラス成形品の機能面（成形面の有口径）に生
じさせず、溶融ガラスを成形毎に捨てる無駄を無くすこ
とができる。ADVANTAGE OF THE INVENTION According to the manufacturing method and apparatus of the glass molded product by this invention, when shape | molding by a direct press method, a shear mark does not generate | occur | produce on the functional surface (aperture diameter of a molding surface) of a glass molded product, Waste can be eliminated.

〔実施例〕〔Example〕

以下、本発明によるガラス成形品の製造方法および装
置の実施例について図面を参照しながら詳細に説明す
る。Hereinafter, embodiments of a method and an apparatus for manufacturing a glass molded product according to the present invention will be described in detail with reference to the drawings.

（第１実施例） 第１図a,bは、本発明のガラス成形品の製造方法に用
いる装置の第１実施例を示し、第１図ａは縦断側面図、
第１図ｂは要部の断面図である。First Embodiment FIGS. 1a and 1b show a first embodiment of an apparatus used for a method for manufacturing a glass molded product of the present invention, and FIG.
FIG. 1b is a sectional view of a main part.

溶融ガラス１を収納したルツボ２の外側面には加熱ヒ
ーター３が設けられている。このルツボ２の中央下部に
はオリフィス４が設けられ、中央にはオリフィス４から
の溶融ガラス１流出量を調節するプランジャー５が設け
られている。オリフィス４の下方には溶融ガラス１を切
断するシャー６が配設されている。A heater 3 is provided on the outer surface of the crucible 2 containing the molten glass 1. An orifice 4 is provided at the lower center of the crucible 2, and a plunger 5 for adjusting the amount of molten glass 1 flowing out of the orifice 4 is provided at the center. Below the orifice 4, a shear 6 for cutting the molten glass 1 is provided.

８は円筒状のスリーブで、このスリーブ８はシャー６
の下方に設けられ、上側面には溶融ガラス塊７の投入口
8aが設けられており、投入口8aが前記オリフィス４の真
下に位置するように配置されている。また、スリーブ８
の内径は所望のガラス成形品外径値と等しい内径値に構
成され、スリーブ８の内部には一対の成形型9,10が滑動
自在に嵌挿されている。成形型9,10はSiC、超硬合金等
の耐熱性材料で形成され、その成形面9a,10aは所定の形
状に鏡面加工された後、溶融ガラスとの融着を防止する
窒化クロム（CrN）や窒化ホウ素（BN）等の窒化物コー
ティングが施されている。また、スリーブ８の内周面8b
にも成形面9a,10aと同様の窒化物コーティングが施され
ている。Reference numeral 8 denotes a cylindrical sleeve.
Is provided at the lower side, and on the upper side is an inlet for molten glass lump 7
The orifice 8a is provided so that the inlet 8a is located directly below the orifice 4. Also, sleeve 8
Has an inner diameter equal to the desired outer diameter of the glass molded product, and a pair of molding dies 9 and 10 are slidably fitted inside the sleeve 8. The molding dies 9 and 10 are formed of a heat-resistant material such as SiC or cemented carbide, and the molding surfaces 9a and 10a are mirror-finished to a predetermined shape, and then are subjected to chromium nitride (CrN) for preventing fusion with molten glass. ) And boron nitride (BN). Also, the inner peripheral surface 8b of the sleeve 8
Also, the same nitride coating as the molding surfaces 9a and 10a is applied.

スリーブ８と成形型9,10の嵌挿クリアランスおよび成
形型9,10の嵌挿部の長さはガラス成形品における成形面
同志の傾きが所望の値となるような寸法に構成されてい
る。スリーブ８の一方の端面には押し当て部11が固接さ
れている。押し当て部11の中央部には穴11aが貫通し、
穴11aをプッシュロッド12が図示を省略した駆動源によ
り出入自在に構成されている。スリーブ８の外周面には
スリーブ８、成形型9,10および溶融ガラス塊７の温度を
自在に制御できるヒータ13が設けられている。The clearance between the sleeve 8 and the molding dies 9 and 10 and the length of the insertion part of the molding dies 9 and 10 are set to dimensions such that the inclination of the molding surfaces of the glass molded product becomes a desired value. A pressing portion 11 is fixedly connected to one end surface of the sleeve 8. Hole 11a penetrates through the center of pressing part 11,
The push rod 12 is configured to be able to enter and exit the hole 11a by a driving source (not shown). On the outer peripheral surface of the sleeve 8, a heater 13 capable of freely controlling the temperatures of the sleeve 8, the molds 9, 10 and the molten glass lump 7 is provided.

14はプレスロッドで、このプレスロッド14は図示を省
略したエアシリンダー等の駆動源により成形型９の端面
部に当接し、成形型9,10および溶融ガラス塊７を移送す
るとともに、溶融ガラス塊７を加圧できるように構成さ
れている。Reference numeral 14 denotes a press rod. The press rod 14 is brought into contact with the end face of the molding die 9 by a driving source such as an air cylinder (not shown) to transfer the molding dies 9 and 10 and the molten glass 7 can be pressurized.

以上の構成から成る装置を用いてのガラス成形品の製
造は、まずルツボ２に設けられた加熱ヒータ３により溶
融ガラス１を10〜103ポアズの粘度にし、オリフィス４
から所定量流出させ、シャー６にて切断し、成形型９お
よび10間に溶融ガラス塊７を投入する。この時、溶融ガ
ラス塊７の切断により生ずるシャーマーク7aは溶融ガラ
ス塊７の上方部に位置し、前回の切断により生じたシャ
ーマーク7bは下方部に位置しており、成形型9,10の成形
面9a,10aには接触しない。この投入時における成形型9,
10の温度は溶融ガラス塊７との融着を防止するため、ガ
ラス転移点温度以下の比較的低温領域に保持することが
望ましい。In the manufacture of a glass molded product using the apparatus having the above-described configuration, first, the molten glass 1 is made to have a viscosity of 10 to 10 3 poise by the heater 3 provided in the crucible 2, and the orifice 4 is formed.
A predetermined amount is discharged from the mold, cut by a shear 6, and a molten glass lump 7 is put between molding dies 9 and 10. At this time, the shear mark 7a generated by the cutting of the molten glass lump 7 is located above the molten glass lump 7 and the shear mark 7b generated by the previous cutting is positioned below the lump 7 It does not contact the molding surfaces 9a, 10a. The mold 9,
The temperature of 10 is desirably maintained in a relatively low temperature range below the glass transition temperature in order to prevent fusion with the molten glass lump 7.

次に、プレスロッド14を成形型９の端面部に当接さ
せ、成形型9,10および溶融ガラス塊７をプレスロッド14
によりスリーブ８内の右方に移送し押し当て面11に成形
型10の端面部を当接させる。この移送により、溶融ガラ
ス塊７の投入口９を避けた位置で、プレスロッド14によ
り所定の圧力を溶融ガラス塊７に加圧し押圧成形を行
う。この時の押圧成形条件は、例えば、ヒータ13を制御
してガラスの屈伏点（粘度で1010.5ポアズ）の温度と
し、圧力を20kg/cm2として完全に成形が完了するまで保
持した後、ガラスの徐冷温度付近まで冷却する。この
後、プッシュロッド12を成形型10の端面部に当接し、左
方向に駆動させることでスリーブ８内よりガラス成形品
15を取り出す。Next, the press rod 14 is brought into contact with the end face of the molding die 9, and the molding dies 9, 10 and the molten glass block 7 are pressed into the press rod 14.
As a result, the end face of the molding die 10 is moved to the right in the sleeve 8 and brought into contact with the pressing surface 11. By this transfer, a predetermined pressure is applied to the molten glass lump 7 by the press rod 14 at a position avoiding the inlet 9 of the molten glass lump 7 to perform press molding. The pressing conditions at this time include, for example, controlling the heater 13 to a temperature of the sag point (viscosity of 10 10.5 poise) of the glass, maintaining the pressure at 20 kg / cm 2 until the molding is completed, and then pressing the glass. Cool to near the slow cooling temperature. Thereafter, the push rod 12 is brought into contact with the end face of the molding die 10 and is driven to the left, so that the glass molded product comes out of the sleeve 8.
Take out 15.

本実施例によれば、研削，研磨加工が一切不要な高精
度のガラス成形品15を、ルツボ２のオリフィス４から流
出する溶融ガラス１切断すると同時にプレス成形すると
いう極限まで簡素化された工程で、短時間かつ経済的に
製造できるものである。According to the present embodiment, a highly simplified glass molded product 15 that does not require any grinding or polishing processing is cut into the molten glass 1 flowing out of the orifice 4 of the crucible 2 and simultaneously press-molded. It can be manufactured in a short time and economically.

また、溶融ガラス塊７に生ずるシャーマーク7a,7bを
ガラス成形品15の外周部に位置させた状態で押圧成形が
行われることにより、ガラス成形品15の外周部にのみシ
ャーマーク7a,7bが発生し、その機能面にはシャーマー
ク7a,7bが全く発生しない。従って、機能面が完全な鏡
面を有するガラス成形品15を製造することができる。Further, since the pressing is performed in a state where the shear marks 7a and 7b generated in the molten glass lump 7 are positioned on the outer peripheral portion of the glass molded product 15, the shear marks 7a and 7b are formed only on the outer peripheral portion of the glass molded product 15. And no shear marks 7a and 7b are generated on the functional surface. Therefore, it is possible to manufacture a glass molded product 15 having a completely mirror surface with a functional surface.

さらに、スリーブ８により成形型9,10の成形面9a,10a
の傾きがおさえられた状態で成形される上、ガラス成形
品15の外周面がスリーブ８の内周面8bで規制されて成形
を完了するので、芯取り加工の必要がなく、偏芯のない
ガラス成形品15を製造することができる。Further, the molding surfaces 9a, 10a of the molding dies 9, 10 are formed by the sleeve 8.
Of the glass molded product 15 is regulated by the inner peripheral surface 8b of the sleeve 8, and the molding is completed. Therefore, there is no need for centering and no eccentricity. The glass molded product 15 can be manufactured.

尚、本実施例では成形の加圧をプレスロッド14により
行ったが、溶融ガラス塊７を成形型9,10間に投入した
後、スリーブ８全体を鉛直方向にたてられるように構成
し、成形型９の自重により溶融ガラス塊７を移送すると
ともに押圧成形を行うこともできる。In the present embodiment, the pressurizing is performed by the press rod 14. However, after the molten glass lump 7 is put between the molds 9 and 10, the whole sleeve 8 is configured to be set up vertically. The molten glass lump 7 can be transferred by the own weight of the molding die 9 and press molding can be performed.

（第２実施例） 第２図は、本発明のガラス成形品の製造方法に用いる
装置の第２実施例を示す一部を断面した正面図である。(Second Embodiment) FIG. 2 is a partially cutaway front view showing a second embodiment of the apparatus used in the method for producing a glass molded product of the present invention.

本実施例に示されるガラス成形品の装置は、前記第１
実施例におけるスリーブ８を、回転軸16に対し対称位置
に、例えば６個回転可能に設けて構成した点が異なり、
他の構成は同一の構成から成るもので、他の構成につい
ては同一番号を付してその説明を省略する。The apparatus of the glass molded product shown in the present embodiment is the first
The difference is that the sleeve 8 in the embodiment is provided symmetrically with respect to the rotation shaft 16, for example, so as to be rotatable six times.
The other components have the same configuration, and the other components have the same reference numerals and description thereof will be omitted.

オリフィス４の下方に位置するシャー６の下方には、
回転軸16に対し対称位置に、たとえば６個のスリーブ８
が固定具17により連結され回転可能に設けられている。
そして、回転軸16が回転し、スリーブ８がオリフィス４
の真下に位置した時、スリーブ８に設けられた溶融ガラ
ス塊７の投入口8aが上方に位置するように構成されてい
る。Below the shear 6 located below the orifice 4,
For example, six sleeves 8 are provided at symmetric positions with respect to the rotation axis 16.
Are connected by a fixture 17 so as to be rotatable.
Then, the rotating shaft 16 rotates, and the sleeve 8
Is located just below the opening 8a of the molten glass lump 7 provided on the sleeve 8 so as to be located above.

以上の構成から成る装置を用いての製造方法は前記第
１実施例と同様であるが、一つの成形が終了すると、回
転軸27が回転し、次のスリーブ８がオリフィス４の真下
に位置し、次の成形工程に入る。The manufacturing method using the apparatus having the above-described configuration is the same as that of the first embodiment. However, when one molding is completed, the rotating shaft 27 rotates, and the next sleeve 8 is positioned directly below the orifice 4. Then, the next molding step is started.

本実施例によれば、連続した成形を行うことが可能と
なり、前記第１実施例と同様な効果が得られるととも
に、更に生産性の向上を図ることができる。According to the present embodiment, continuous molding can be performed, and the same effects as those of the first embodiment can be obtained, and the productivity can be further improved.

〔発明の効果〕〔The invention's effect〕

以上のように、本発明によれば、研削，研摩加工が一
切不要の高精度なガラス成形品を短時間かつ経済的に製
造することができるものである。As described above, according to the present invention, a high-precision glass molded product that does not require any grinding or polishing can be manufactured in a short time and economically.

【図面の簡単な説明】[Brief description of the drawings]

第１図a,bは、本発明によるガラス成形品の製造に用い
る装置の第１実施例を示し、第１図ａは縦断側面図、第
１図ｂは要部の断面図、第２図は同第２実施例を示す一
部を断面した正面図、第３図a,b,cは従来例を示し、第
３図ａは側面図、第３図ｂは斜視図、第３図ｃは断面図
である。 １……溶融ガラス ２……ルツボ 3,13……ヒータ ４……オリフィス ５……プランジャー ６……シャー ７……溶融ガラス塊 7a,7b……シャーマーク ８……スリーブ 8a……投入口 8b……内周面 9,10……成形型 9a,10a……成形面 11……押し当て部 12……プッシュロッド 14……プレスロッド 15……ガラス成形品 16……回転軸 17……固定具1a and 1b show a first embodiment of an apparatus used for producing a glass molded product according to the present invention. FIG. 1a is a longitudinal side view, FIG. 1b is a sectional view of a main part, FIG. Fig. 3 is a front view of a part of the second embodiment, Figs. 3a, 3b and 3c show a conventional example, Fig. 3a is a side view, Fig. 3b is a perspective view, and Fig. 3c. Is a sectional view. 1 ... molten glass 2 ... crucible 3, 13 ... heater 4 ... orifice 5 ... plunger 6 ... shear 7 ... molten glass lump 7a, 7b ... shear mark 8 ... sleeve 8a ... inlet 8b Inner peripheral surface 9,10 Molding die 9a, 10a Molding surface 11 Pressing part 12 Push rod 14 Press rod 15 Glass molded product 16 Rotating shaft 17 Fixture

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】一対の成形型を滑動自在に嵌挿したスリー
ブ上側面に溶融ガラス塊投入口を設け、該溶融ガラス塊
投入口上方に位置するオリフィスからの溶融ガラス塊を
前記成形型間に投入した後、該成形型と溶融ガラス塊と
をスリーブ内で移送し、前記溶融ガラス塊投入口を避け
て押圧成形を行うことを特徴とするガラス成形品の製造
方法。1. A molten glass lump input port is provided on an upper surface of a sleeve in which a pair of molding dies are slidably inserted, and a molten glass lump from an orifice located above the molten glass lump input port is interposed between the molding dies. A method for producing a glass molded product, comprising: transferring the mold and the molten glass lump in a sleeve after being charged, and performing press molding while avoiding the molten glass lump inlet. 【請求項２】上側面に溶融ガラス塊投入口を設けたスリ
ーブと、該スリーブに嵌挿された滑動自在な一対の成形
型と、該成形型を移送しかつ加圧する加圧手段と、前記
溶融ガラス塊投入口上方に配設されたオリフィスと、該
オリフィスと前記溶融ガラス塊投入口との間に設けオリ
フィスからの溶融ガラスを切断する切断手段とからなる
ガラス成形品の製造装置。2. A sleeve provided with a molten glass lump inlet on an upper surface thereof, a pair of slidable molding dies fitted into the sleeve, a pressing means for transferring and pressing the molding dies, An apparatus for manufacturing a glass molded product, comprising: an orifice disposed above a molten glass lump input port; and cutting means provided between the orifice and the molten glass lump input port to cut molten glass from the orifice.
JP27817389A 1989-10-25 1989-10-25 Manufacturing method and apparatus for glass molded product Expired - Fee Related JP2662300B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27817389A JP2662300B2 (en) 1989-10-25 1989-10-25 Manufacturing method and apparatus for glass molded product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27817389A JP2662300B2 (en) 1989-10-25 1989-10-25 Manufacturing method and apparatus for glass molded product

Publications (2)

Publication Number Publication Date
JPH03141126A JPH03141126A (en) 1991-06-17
JP2662300B2 true JP2662300B2 (en) 1997-10-08

Family

ID=17593609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27817389A Expired - Fee Related JP2662300B2 (en) 1989-10-25 1989-10-25 Manufacturing method and apparatus for glass molded product

Country Status (1)

Country Link
JP (1) JP2662300B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6106035B2 (en) * 2012-06-29 2017-03-29 Hoya株式会社 Glass lump manufacturing apparatus, glass lump manufacturing method, glass molded product manufacturing method, and optical element manufacturing method
CN114933406B (en) * 2022-06-16 2023-11-10 山东力诺特种玻璃股份有限公司 Feeding machine for eliminating glass gob shear mark and method for eliminating shear mark

Also Published As

Publication number Publication date
JPH03141126A (en) 1991-06-17

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