JPH01203234A - Device for forming optical element - Google Patents
Device for forming optical elementInfo
- Publication number
- JPH01203234A JPH01203234A JP2771188A JP2771188A JPH01203234A JP H01203234 A JPH01203234 A JP H01203234A JP 2771188 A JP2771188 A JP 2771188A JP 2771188 A JP2771188 A JP 2771188A JP H01203234 A JPH01203234 A JP H01203234A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- mold
- molding
- periphery
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 111
- 239000011521 glass Substances 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000006060 molten glass Substances 0.000 claims abstract description 16
- 238000000465 moulding Methods 0.000 claims description 62
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000047 product Substances 0.000 description 32
- 238000000034 method Methods 0.000 description 27
- 239000012530 fluid Substances 0.000 description 21
- 238000003825 pressing Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 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
- C03B11/06—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
- C03B2215/00—Press-moulding glass
- C03B2215/40—Product characteristics
- C03B2215/46—Lenses, e.g. bi-convex
- C03B2215/48—Convex-concave
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/76—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis
- C03B2215/77—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis with means to trim off excess material
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、プレス成形による光学素子の成形装置に関し
、より詳細には、プレス成形後において研削及び研摩等
の工程を経ることなしに表面精度及び重量精度の良好な
光学素子又はそのリヒートプレス用として好適するプリ
フォームの成形装置に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to an apparatus for molding optical elements by press molding, and more specifically, the present invention relates to an apparatus for molding optical elements by press molding, and more specifically, the present invention relates to a molding device for optical elements by press molding, and more specifically, it is possible to improve surface accuracy without going through processes such as grinding and polishing after press molding. The present invention also relates to an optical element with good weight accuracy or a preform molding apparatus suitable for reheat pressing thereof.
(従来の技術)
近(14、所定の表面精度をイ1する成形用型内Iこガ
ラス素材を収容してプレス成形することにより。(Prior Art) A glass material is housed in a mold and press-molded to achieve a predetermined surface accuracy.
研削及びω1摩等の後加工を不要とした高精度の光′?
素rを成形する方法が開発されている。High-precision light that eliminates the need for post-processing such as grinding and ω1 polishing'?
A method for molding raw material has been developed.
このプレス成形法には、一般にリヒートプレス法とダイ
レクトプレス法がある。This press molding method generally includes a reheat press method and a direct press method.
リヒートプレス法は、予め溶融固化したガラス材料の必
要1dを切断し、砂ずり等の方法により重量調整を施し
てガラス小塊とし、これを成形用型内に入れ、該ガラス
小塊と成形用型を同時に又は別々にプレス温度まで加熱
した後、プレス成形して成形用型に形成した光字機能面
を抑圧転写して光′?素子を成形する方法である。In the reheat press method, the necessary 1 d of glass material that has been melted and solidified in advance is cut, the weight is adjusted by a method such as sanding, and the resulting glass pellets are placed in a mold for molding. After heating the molds simultaneously or separately to the pressing temperature, press molding is performed and the optical character functional surface formed on the molding mold is suppressed and transferred to form the optical character. This is a method of molding elements.
−・方、ダイレクトプレス法は、溶融ガラス流出目より
流出若しくは押出される溶融ガラス流の必要i+tを切
断刃により切断し、これを成形用lす」内に直接落下さ
せるか又はシュートによって投入し、しかる後成形用型
を押圧して光′?素子を成形する方法である。- On the other hand, in the direct press method, the necessary amount of the molten glass flowing out or extruded from the molten glass outlet is cut by a cutting blade, and the cut is directly dropped into a molding container or thrown into a chute. After that, press the mold and light it. This is a method for molding elements.
又、上記のリヒートプレス法において、切断及び砂ずり
専のような生産性の低いに程を経ずに上記のダイレクト
プレス法における如く、溶融ガラスを成形用!す1に入
れてプレス成形し、最終製品に近似した形状のr・備成
形品(プリフォーム)を得たLで該プリフォームを最終
製品の形状及び面精度と同じか若しくはそれ以−Lに精
度の高い光′?機機能面41する成形用lす!に入れて
プレス成形を行なう方法がある。In addition, in the above-mentioned reheat press method, molten glass can be used for molding as in the above-mentioned direct press method, without going through the process of cutting and sanding, which has low productivity! 1 and press-form the preform into a shape similar to that of the final product. Highly accurate light′? For molding with 41 machine functions! There is a method of press-forming by placing it in a container.
(発明が解決しようとする問題点)
これらの成形方法により得られた光学素子は、良好な像
形成品質が得られるよう所定の面精度及び・r法精度が
要求され、又このためF記のいずれの方法においても最
終製品を得るためのプレス成形に供給されるガラス材料
は部分に重らt調整がなされていなければならない。(Problems to be Solved by the Invention) Optical elements obtained by these molding methods are required to have a certain surface accuracy and r-method accuracy in order to obtain good image forming quality, and for this reason, the In either method, the glass material fed to the press molding to obtain the final product must be partially weighted.
しかしながら、上記のガラス小塊を用いてプレス成形す
る方法では、ガラス小塊の重電調整を切断及び砂ずり等
により行なうため、成形品の表面に砂目が残留したり、
プレス成形前にガラス小塊を加熱する際、ガラスと加熱
用受皿との融着を防止するために塗布した離を済がプレ
ス時に成形品の表面に食い込んで該成形品の表面精度が
著しく悪化するという問題がある。However, in the above-mentioned method of press-molding using small glass lumps, since the heavy electrical adjustment of the glass small lumps is performed by cutting and sanding, grains may remain on the surface of the molded product.
When heating small glass lumps before press forming, the adhesive applied to prevent the glass and heating tray from fusing together bites into the surface of the molded product during pressing, significantly deteriorating the surface accuracy of the molded product. There is a problem with doing so.
又、直接溶融ガラスを用いてプレス成形する方法では、
切断刃による切断の際、成形品にシャーマークと称せら
れる切断痕が生じ、成形品の面精度が劣化するという問
題がある。又、このプレス成形法においては、成形品の
市に調整を溶融ガラス流の切断によって行なうため、こ
の溶融ガラス流の温度変化や切断タイミング或いはガラ
ス流の峯脈動等により成形品に重rl変動が生じ、所定
の寸法精度が得られないという問題点もある。In addition, in the method of press forming directly using molten glass,
When cutting with a cutting blade, cutting marks called shear marks are generated on the molded product, which causes a problem in that the surface precision of the molded product deteriorates. In addition, in this press molding method, the center of the molded product is adjusted by cutting the molten glass flow, so the molded product may be subject to weight rl fluctuations due to temperature changes in the molten glass flow, cutting timing, or pulsation of the glass flow. There is also the problem that predetermined dimensional accuracy cannot be obtained.
なお、特にシャーマークの発生を防1!ニジたプレス成
形法としては、特公昭41−9190号公報或いは特開
昭6 l −I 3252 :3号公報に記載されたも
のがある。In addition, it especially prevents the occurrence of shear marks! Examples of the press molding method include those described in Japanese Patent Publication No. 41-9190 and Japanese Patent Application Laid-Open No. 61-13252:3.
特公昭41−9190号公報に記載された成形方法では
、成形用型を溶融ガラスの流下方向に直角の方向に押圧
して型空所内に溶融ガラスを充填させてプレス成形する
方法であるが、成形用型の押1.F時に型空所内の余剰
ガラスが成形用型とこれに対向するアンビルとの間から
流出するという現象が生じる。この余剰ガラスは成形用
型の押If動作が進行するにイ゛rい、その流出抵抗を
増大するとともに成形用型により冷却されて粘性を増し
、これが成形用型とこれに対向するアンビル間で完全に
切取られないまま冷却されて成形品の外周にはみ出し部
分を形成する。このため、プレス成形後においてこのは
みIll L部分の破断及び破断面を仕」げる作業が必
要となる。又、溶融ガラス流の大きさが変動することに
より上記した成形品とはみ出し部分との間のガラス厚さ
が変動して成形品の厚さにバラツキが生じてしまい、重
量調整が高精度に行なえないという問題もある。In the molding method described in Japanese Patent Publication No. 41-9190, press molding is performed by pressing a mold in a direction perpendicular to the direction of flow of molten glass to fill the mold cavity with molten glass. Pressing the mold for molding 1. At the time of F, a phenomenon occurs in which excess glass in the mold cavity flows out from between the mold and the anvil facing the mold. As the pushing motion of the mold progresses, this excess glass increases its outflow resistance and is cooled by the mold, increasing its viscosity, and this increases the viscosity between the mold and the opposing anvil. It is cooled without being completely cut out, and a protruding portion is formed on the outer periphery of the molded product. For this reason, after press molding, it is necessary to break the IllL portion and to clean up the broken surface. Furthermore, due to variations in the size of the molten glass flow, the glass thickness between the above-mentioned molded product and the protruding portion changes, causing variations in the thickness of the molded product, making it difficult to adjust the weight with high precision. There is also the problem of not having one.
一方、特開昭61−13251:う号公報に記載された
成形方法では、成形品の精度は流動するガラス体を打抜
く前の該ガラス体の大きさ等に依存し、ており高精度の
寸法形状を有するロッド又はガラスシートが必要となる
。On the other hand, in the molding method described in JP-A No. 61-13251, the precision of the molded product depends on the size of the flowing glass body before punching it. A rod or glass sheet with dimensions and shape is required.
本発明者等は、ヒ述のような問題点を解決すべく、ガラ
ス流体を挟むように−・対の成形用型を対向配置すると
ともに該成形用型のキャビティを設定し、+i?J記ガ
ラス流体を前記成形用型でhいに押圧して被成形部を形
成した後、 +前記成形用型の外周に設けた切断部材に
よりmI記被成形部とその他の部分とを切断分離するこ
とを特徴とする光学素rの製造方法について既に提案し
である。In order to solve the problems mentioned above, the present inventors arranged a pair of molds facing each other so as to sandwich the glass fluid therebetween, and set the cavities of the molds to +i? After pressing the glass fluid J to the mold to form a molded part, + cutting and separating the molded part mI from other parts using a cutting member provided on the outer periphery of the mold. A method for manufacturing an optical element r characterized by the following has already been proposed.
この方法によるとガラス流体の切断跡を避けた状態で成
形品の機能面を形成するとともに成形用型の外周に設け
た切断部材により成形品の外周側面を高精度に形成する
ことができ、シャーマーク等の表面欠陥がなく、寸法精
度及び1iit精度がすこぶる良好な光学素子が得られ
る。According to this method, the functional surface of the molded product can be formed while avoiding cutting traces of the glass fluid, and the outer peripheral side of the molded product can be formed with high precision using the cutting member provided on the outer periphery of the mold. An optical element with excellent dimensional accuracy and 1iit accuracy without surface defects such as marks can be obtained.
本発明は、この種の製造方法に好適する装置に関するも
のであり、切断部材が成形用型に摺動する際に成形用型
の熱膨張に起因して発生するカジリを防1ヒするよう構
成された成形製(aを提供することを目的とする。The present invention relates to an apparatus suitable for this type of manufacturing method, and is configured to prevent galling caused by thermal expansion of the mold when the cutting member slides on the mold. The purpose is to provide a molded product (a).
このようなカジリが発生すると切断部材が成形用ノリ1
の外周で円滑に移動することができないばかりか、−は
なはだしくは切断部材が成形用型に食い付いてしまい切
断部材が全く移動できないといつ事態を招く。又、切断
部材が成形用型で摩耗して切断部材の刃先部が入れてし
まうと、切断後の成形品外周にも荒れが牛じたり切り粉
が付着し、好ましくない。If this kind of galling occurs, the cutting member will not adhere to the molding glue 1.
Not only is it impossible to move smoothly around the outer periphery of the cutting member, but even worse, the cutting member gets stuck in the mold and cannot be moved at all, which can lead to a situation. Moreover, if the cutting member is worn out by the mold and the cutting edge of the cutting member gets stuck, the outer periphery of the cut molded product will be roughened and chips will adhere, which is undesirable.
(問題点を解決するための手段)
子連した従来の問題点を解決するために、本発明の光学
素子の成形装置は、溶融したガラス素材をプレス成形す
る成形用型の外周に所定間隔を保って前記ガラス素材の
余剰部分を切断する切断部材を設け、前記切断部材の刃
頭部内周における前記成形用型と前記切断部材との所定
間隔を僅少空隙とし、前記切断部材内にO;1記空隙を
所定1tに保つように温度制御可能な加熱手段を配設し
たことを特徴とする。(Means for Solving the Problems) In order to solve the problems of the related art, the optical element molding apparatus of the present invention has a method of forming a predetermined interval on the outer periphery of a mold for press-molding a molten glass material. A cutting member is provided to cut the surplus portion of the glass material while maintaining the cutting member, and a predetermined gap is formed between the mold and the cutting member on the inner periphery of the blade head of the cutting member, and an O; 1. A heating means capable of temperature control is provided so as to maintain the gap at a predetermined value of 1 t.
(作 用)
このように構成された光学素子の成形装置において、成
形用型の外周にはこの型と所定間隔な保って1.IJ断
部材が設けられている。該切断部材は成形用型の外周に
沿って移動し成形用型により成形された成形品の余剰部
分を切断して成形品の外周形状を形成する。(Function) In the optical element molding apparatus configured as described above, the outer periphery of the mold is kept at a predetermined distance from the mold. An IJ cutting member is provided. The cutting member moves along the outer periphery of the mold and cuts the excess portion of the molded product formed by the mold to form the outer peripheral shape of the molded product.
さらに、このようなリノ断部材の先端付近を構成するメ
J頭部内周と成形用型との間には僅少空隙が設けられて
いる。ここで、l’、、;L!刀頭部は切断部材の先端
(メJ先部)のみを構成するものではなく1.3先端か
ら幾分かの幅を有しており、この幅は切断部材が成形品
外周の余剰部分を切断する移動動作中、該刃頭部が成形
用型から外れることのない程度に構成することが肝要で
ある。このような構成により、ガラス素材を成形する際
、該ガラス素材が成形用型と切断部材との空隙に侵入す
ることがなく、成形用型の外周を切断部材が移動する際
、該切断部材が成形用型に対してカジリ或は食い付きを
発生ずるようなことがない。Furthermore, a slight gap is provided between the inner periphery of the J head, which constitutes the vicinity of the tip of such a lino cutting member, and the mold. Here, l', ;L! The knife head does not constitute only the tip of the cutting member (MeJ tip), but has a certain width from the 1.3 tip. It is important that the blade head be constructed to such an extent that it will not come off from the mold during the cutting movement. With this configuration, when molding the glass material, the glass material does not enter the gap between the mold and the cutting member, and when the cutting member moves around the outer periphery of the mold, the cutting member There is no possibility of galling or sticking to the mold.
さらに、本発明においては、上記の刃頭部と成形用型と
の僅少空隙を初期の間隔に保つよう切断部材内に温度制
御可能な加熱手段が設けられている。−ト述のような僅
少空隙は、成形用型の加熱時において該成形用型が熱膨
張することにより容易に変動し、成形用型の外周を切断
部材が移動する際、該切断部材が成形用型に対してカジ
リ或は食い付きを発生するおそれがあるが、1−記加熱
手段により、切断部材をも加熱し熱膨張せしめることに
より、このようなカジリ或は食い付きを防1トすること
が口■能である。又、切断部材の熱膨張は上記の加熱手
段に設けた一度制御により調整することができる。該温
度制御を構成する手段として温度検出用の熱電対が適用
可能であるが、このような温度検出手段は、特に刃頭部
の温度制御が必要なことから、切断部材の先端近傍にま
で設けることが望ましい。Further, in the present invention, a temperature-controllable heating means is provided within the cutting member so as to maintain the slight gap between the blade head and the mold at the initial distance. - The small voids mentioned above easily fluctuate due to thermal expansion of the mold when the mold is heated, and when the cutting member moves around the outer periphery of the mold, the cutting member Although there is a possibility that galling or sticking may occur with respect to the cutting die, such galling or sticking can be prevented by heating the cutting member and thermally expanding it using the heating means described in 1-1. This is oral ability. Further, the thermal expansion of the cutting member can be adjusted by a one-time control provided on the heating means. A thermocouple for temperature detection can be applied as a means for configuring the temperature control, but such a temperature detection means is particularly necessary to control the temperature of the blade head, so it is necessary to provide it near the tip of the cutting member. This is desirable.
以りのような構成により、成形用型の熱膨張に影響され
ず、成形用型と切断部材の刃頭部との僅少空隙を初期の
間隔に保つことができ、切断部材のカジリ或は食い付き
を防1卜することができる。With the above configuration, it is possible to maintain a small gap between the mold and the blade head of the cutting member at the initial distance without being affected by the thermal expansion of the mold, thereby preventing galling or gouging of the cutting member. It is possible to prevent sticking.
(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。(Example) Examples of the present invention will be described below with reference to the drawings.
第1図は本発明の実施例装置の要部断面図である。第2
〜7図は第1図に示す装置の適用例を示す図であり、二
1−程順の作動状況が示しである。FIG. 1 is a sectional view of a main part of an apparatus according to an embodiment of the present invention. Second
7 are diagrams showing an example of application of the apparatus shown in FIG. 1, and show operating conditions in the order of steps 21-7.
まず、第1図に示すように、本実施例装置の1ミ要部は
、型部材6と切断部材7と加熱部材たる切断リング7と
加熱手段たるヒーター25と温度検出手段たる熱電対2
6とから成るものである。First, as shown in FIG. 1, the main parts of the apparatus of this embodiment include a mold member 6, a cutting member 7, a cutting ring 7 as a heating member, a heater 25 as a heating means, and a thermocouple 2 as a temperature detecting means.
It consists of 6.
切断リング7はJ□!部材6の外周に所定間隔を有して
設けられ、不図示の駆動手段により該型部材6の外周に
沿って移動可能とされている。型部材6には成形面6a
が設けられ、対向する型部材5の成形面5aと対向状態
にあり、プレス成形の際は、これらの成形面間にガラス
素材が供給されて人々の成形面が抑圧転写される。[−
記した切断リング7と型部材6との間隔は比較的太き(
てよい。Cutting ring 7 is J□! They are provided at predetermined intervals on the outer periphery of the mold member 6, and are movable along the outer periphery of the mold member 6 by a driving means (not shown). The mold member 6 has a molding surface 6a.
is provided and faces the molding surface 5a of the opposing mold member 5, and during press molding, a glass material is supplied between these molding surfaces to suppress and transfer the molding surface of the person. [-
The distance between the cutting ring 7 and the die member 6 shown is relatively large (
It's fine.
さらに、型部材6の外周と切断リング7の刃し0部7a
の内周は僅少な空隙24を有するように構成されている
。刃頭部7aの幅は切断リング7が型部材6の外周を移
動した際、該刃頭部が型部材6から外れない程度に構成
しである。空隙24の間隔は20μ〜5()μとするの
が好ましい。この空隙24が20μより小さく構成する
と、以下に示すように切断リング7を温度制御して熱膨
張を調整するのが困難であり、型部材6に対してカジリ
を生じやすくなる。空隙24を50μより大きく構成す
ると、プレス成形の際、ガラス素材がこの空隙に侵入し
やすくなり、かえって切断リング7の移動動作を妨げて
しまう。又、この場合、成形品にハリ等が牛じ、好まし
くない。Furthermore, the outer periphery of the mold member 6 and the cutting edge 0 part 7a of the cutting ring 7
The inner periphery is configured to have a small gap 24. The width of the blade head 7a is configured to such an extent that the blade head does not come off from the mold member 6 when the cutting ring 7 moves around the outer periphery of the mold member 6. The spacing between the voids 24 is preferably 20μ to 5()μ. If the gap 24 is configured to be smaller than 20 μm, it is difficult to control the temperature of the cutting ring 7 to adjust the thermal expansion as described below, and the mold member 6 is likely to be galled. If the gap 24 is configured to be larger than 50 μm, the glass material will easily enter the gap during press molding, and the movement of the cutting ring 7 will be hindered. Also, in this case, the molded product will have some stiffness, which is not desirable.
型部材6及び切断リング7に好適する材質としては、ス
ーパーアロイとして例えばWC1対熱金属として例えば
SUS、炭ふ工具鋼として例えばSKD、金属以外の耐
熱材として例えば5iC1A1□03等のセラミック及
びサーメット簿が挙げられ、使用雰囲気、必要温度及び
使用するガラス材によって適宜選定する。なお、切断リ
ングの方が型部材よりも耐摩耗性に優れる材質を選定す
ることが望ましい。Suitable materials for the mold member 6 and cutting ring 7 include super alloys such as WC1, heat-resistant metals such as SUS, carbon steel tool steels such as SKD, and heat-resistant materials other than metals such as ceramics and cermets such as 5iC1A1□03. are selected depending on the usage atmosphere, required temperature, and glass material used. Note that it is desirable to select a material for the cutting ring that has better wear resistance than the mold member.
14体例として、大気雰囲気中でガラス素材として5F
8(ゴブ温度=800℃)を成形した。型材としてSU
S、切断リング7の材料としてSKを使用し、型と切断
リングの空隙24を25〜30μ程度に填り、型部材6
を400℃、切断リング7を300℃に設定してプレス
成形を行なったところ、切断リング7と型部材6とのカ
ジリもなく、又成形品にパリも発生せず良好な成形結果
が得られた。As an example of 14 bodies, 5F as a glass material in an atmospheric atmosphere.
8 (gob temperature = 800°C) was molded. SU as mold material
S. Use SK as the material for the cutting ring 7, fill the gap 24 between the mold and the cutting ring to about 25 to 30μ, and mold the mold member 6.
When press molding was carried out with the temperature set at 400°C and the cutting ring 7 at 300°C, good molding results were obtained with no galling between the cutting ring 7 and the mold member 6, and no flashing in the molded product. Ta.
切断リング7内には温度検出用の熱電対26及び加熱用
のヒーター25が設けられている。これらの熱電対26
及びヒーター25は切断リング7の先端付近にまで設は
刃先部7a周辺の温度検出及び加熱ができるように構成
しである。成形装置の外部には、コントローラー28が
設けられ、該コントローラーは電力調節器28a、温度
調節器28bを備えである。ヒーター25は電力調節器
28aに接続され、熱電対26は温度調節2528bに
接続され、熱電対26で検出された測定値を出力制御信
号として電力調節器28aに送り、該電力調節器にて制
御されヒーター25により切断リング7が加熱される。A thermocouple 26 for temperature detection and a heater 25 for heating are provided inside the cutting ring 7. These thermocouples 26
The heater 25 is installed near the tip of the cutting ring 7 so as to detect and heat the temperature around the cutting edge 7a. A controller 28 is provided outside the molding apparatus, and the controller includes a power regulator 28a and a temperature regulator 28b. The heater 25 is connected to a power regulator 28a, the thermocouple 26 is connected to a temperature regulator 2528b, and the measured value detected by the thermocouple 26 is sent as an output control signal to the power regulator 28a, and the power regulator 28a controls the temperature. The cutting ring 7 is heated by the heater 25.
このような、温度制御手段を備えたヒーター25により
切断リング7も成形用型の熱膨張に応じて加熱し熱膨張
せしめられ、初期の空隙24の間隔が保たれる。The cutting ring 7 is also heated and thermally expanded in accordance with the thermal expansion of the mold by the heater 25 equipped with temperature control means, and the initial spacing of the gaps 24 is maintained.
31は型部材6を加熱するヒーターであり、このヒータ
ーには型温検出用の熱電対が内蔵され、上記した切断リ
ング7に設けられたようなコントローラーに接続され温
度制御が可能となっている。Reference numeral 31 denotes a heater that heats the mold member 6. This heater has a built-in thermocouple for detecting the mold temperature, and is connected to a controller such as the one provided in the cutting ring 7 described above, making it possible to control the temperature. .
第2図に示すプレス成形装置にL述した本実施例装置η
の型部材6及びカッター7等が設けられている。以ド、
このプレス成形装置について説明する。ただし、第2図
において切断リング7に内蔵したヒーター25及び熱電
対26は図示を省略しである。The present embodiment device η described in the press molding device shown in FIG.
A mold member 6, a cutter 7, etc. are provided. Below,
This press molding device will be explained. However, in FIG. 2, the heater 25 and thermocouple 26 built into the cutting ring 7 are not shown.
lは不図示の溶融炉から溶融ガラスを流出するノズルで
あり、このノズルからガラス流体2が流出している。4
はノズル1の下方に設けられ、不図示の駆動装置により
開閉動作を行なうことによりガラス流体2を切断する切
断刃である。1 is a nozzle through which molten glass flows out from a melting furnace (not shown), and a glass fluid 2 flows out from this nozzle. 4
is a cutting blade that is provided below the nozzle 1 and cuts the glass fluid 2 by opening and closing operations by a drive device (not shown).
本実施例に示すプレス成形装置nは、ガラス流体2がノ
ズルlから流F゛する形式のものに対して構成してあり
、l対の成形用型を構成する第1の型部材5と第2の型
部材6とがガラス流体2を略直角方向から挟むように7
7、いに対向した状態で配置しである。The press molding apparatus n shown in this embodiment is constructed to be of a type in which the glass fluid 2 flows from a nozzle l, and has a first mold member 5 and a second mold member constituting l pair of molding molds. 7 so that the mold members 6 of 2 sandwich the glass fluid 2 from substantially perpendicular directions.
7. It is placed facing each other.
°各型部材5.6は、上記したように、対向する夫々の
面に鏡面加工が施された成形部5a、6aを有している
。そして、第1の型部材5及び第2の型部材6は例えば
シリンダー等(不図示)の駆動源により1一方から流ド
するガラス流体2の流出方向に対して互いに略直角方向
に移動して抑圧動作が行なわれる。ただし、これら第1
及び第2の型部材5.6は別々に設けられた駆動源によ
り独立した開閉作動を行なうことができるにれら型部材
5.6の作動ストロークを調整して加圧成形時における
両者の間隔を設定することにより、5!i造すべき成形
品の肉厚を調整することができる。As described above, each mold member 5.6 has molded portions 5a, 6a whose opposing surfaces are mirror-finished. The first mold member 5 and the second mold member 6 are moved in directions substantially perpendicular to each other with respect to the outflow direction of the glass fluid 2 flowing from one side by a driving source such as a cylinder (not shown). A suppression action is performed. However, these first
The second mold member 5.6 can be opened and closed independently by a separately provided drive source, and the operating stroke of the mold member 5.6 can be adjusted to adjust the distance between the two mold members during pressure molding. By setting 5! The wall thickness of the molded product to be manufactured can be adjusted.
型部材6の外周には切断リング7に固着されて該切断リ
ング7を包囲するガイドブロック14が設けられ、この
ガイドブロック14は支持部材10に固定されている。A guide block 14 is provided on the outer periphery of the mold member 6 and is fixed to the cutting ring 7 to surround the cutting ring 7, and this guide block 14 is fixed to the support member 10.
又、型部材5の外周にもガイドブロック1:3が設けら
れていて該型部材5を包囲し、このガイドグロック+
3は支持部材11に支持されている。支持部材10.1
1は夫々シリンダー等の駆動源(不図示)に接続され、
該駆動源の駆動により各々独sVL/た動作で支持部材
10.11を作動する。支持部材10の作動によりガイ
ドブロック14に固着された切断リング7が第2の型部
材6の外周を第1の型部材5の方向に摺動しつつ往復移
動する。又、支持部材11の作動により第1の型部材5
が第2の型部材6の方向に往復移動する。Further, a guide block 1:3 is provided on the outer periphery of the mold member 5 and surrounds the mold member 5, and this guide block +
3 is supported by a support member 11. Support member 10.1
1 are each connected to a driving source (not shown) such as a cylinder,
The support members 10 and 11 are actuated by the drive source, respectively, by a single movement of sVL/. By the operation of the support member 10, the cutting ring 7 fixed to the guide block 14 reciprocates while sliding on the outer periphery of the second mold member 6 in the direction of the first mold member 5. Also, by the operation of the support member 11, the first mold member 5
moves back and forth in the direction of the second mold member 6.
又、ガイドブロック13にはガイドビン15がガイドブ
ロック14側に突出するよう固着され。Further, a guide bin 15 is fixed to the guide block 13 so as to protrude toward the guide block 14 side.
ガイドブロック14には1−記ガイドビン15に嵌合し
て摺動するガイド孔16が設けられている。The guide block 14 is provided with a guide hole 16 into which the guide bin 15 fits and slides.
ガイドプロッタ13.14が作動し汀いに接近するとガ
イドビン15がガイド孔16内で摺動しつつ移動して型
部材5,6の抑圧動作が案内される。When the guide plotters 13, 14 operate and approach the stagnation, the guide bin 15 slides within the guide hole 16 and guides the suppressing operation of the mold members 5, 6.
型部材5.6の人々の内部にはヒーター:SOl;31
が設けられていて、このヒーターにより型部材5.6が
所定温度まで加熱される。Inside the mold member 5.6 there is a heater: SOl; 31
is provided, and the mold member 5.6 is heated to a predetermined temperature by this heater.
又2ガイドブロツク13.14内には人々ヒルター32
.:S3及び熱電対34.35が設けられている。各ヒ
ーター32.33はガイドブロック13.14内で夫々
のガイドビン15及びガイド(Li2の相互のピッチが
所定間隔を保つよう均等に加熱し得るような位置に複数
設けられており、熱電対34.35による温度検)11
により外部に設けられたコントローラーにより温度制御
される。Also, inside the 2 guide blocks 13 and 14 are people Hilter 32.
.. :S3 and thermocouples 34.35 are provided. A plurality of heaters 32, 33 are provided within the guide block 13, 14 at positions where the respective guide bins 15 and guides (Li2) can be heated evenly so that the mutual pitches thereof maintain a predetermined interval. .35 temperature test) 11
The temperature is controlled by an external controller.
次に本装置の動作について第2〜7図及び第8図を用い
て説明する。Next, the operation of this apparatus will be explained using FIGS. 2 to 7 and FIG. 8.
第2〜7図は、本装置の各工程順における作動状態を示
す要部断面図であり、第8図は、本装置における作動部
、即ち第1の型部材5、第2の型部材6、切断刃4及び
切断リング7の谷部の作動タイミングを示すタイミング
チャートであり、横軸は時間1°を示1゜これら作動部
の作動タイミングは、各作動部を接続した不図示のコン
トローラーにより制御することができる。2 to 7 are main part sectional views showing the operating state of this device in each process order, and FIG. , is a timing chart showing the actuation timing of the troughs of the cutting blade 4 and the cutting ring 7, where the horizontal axis represents time 1°.The actuation timing of these actuating parts is determined by a controller (not shown) connected to each actuating part. can be controlled.
第2図はプレス成形向O1jの状態であり、ノズル1か
らはガラス流体2が流Fしている。このガラス流体2の
先端、即ち切断跡3が対向する各成形面5a、6aより
ド方に流下した時点で、第1の型部材5及び第2の型部
材6の抑圧動作を開始する。この抑圧動作において、ガ
イドビン15はガイド孔16内に嵌合するとともに摺動
し、型部材5.6に多少の軸ずれがあってもこれら型部
材5.6がガイド部材に案内されて軸ずれが矯IFされ
る。FIG. 2 shows a state in which the press molding direction is O1j, and the glass fluid 2 is flowing from the nozzle 1. When the tip of the glass fluid 2, that is, the cut mark 3, flows downward from the opposing molding surfaces 5a, 6a, the first mold member 5 and the second mold member 6 start to be suppressed. In this suppressing operation, the guide bin 15 fits into the guide hole 16 and slides, and even if the mold members 5.6 are slightly misaligned, the mold members 5.6 are guided by the guide member and the shaft is moved. The deviation is corrected by IF.
第8図においてT=0はこの両型部材5.6の作動開始
時期を示す。これら型部材5,6の作動開始時期は双方
において同時でよいが、型部材5.6のガラス流体2に
対する抑圧動作路r時期′「2は双方において同時か多
くとも±0.05sの、si差に収めるのが&rましい
。このl;差が大きいと1141部材5.6の片ノJの
みがガラス流体2に衝突して該ガラス流体2に横ブレが
牛じ々fましくない。その後、型部材5.6は、第3図
に示すように、ガラス流体2の被成形部21を押t−1
−したままの状態を所定時間保ち、この間被成形部21
の両表面に対して夫々の成形面521.6aによる押I
F転写が行なわれる。In FIG. 8, T=0 indicates the timing at which both mold members 5.6 start operating. The operation start timings of these mold members 5 and 6 may be the same for both, but the timing of the suppression operation path r' of the mold members 5 and 6 against the glass fluid 2 is the same or at most ±0.05 s. It is preferable to keep the difference within the range. If this difference is large, only one end J of the 1141 member 5.6 collides with the glass fluid 2, causing the glass fluid 2 to shake horizontally. Thereafter, the mold member 5.6 presses the molded portion 21 of the glass fluid 2 at t-1, as shown in FIG.
- Maintain this state for a predetermined period of time, during which time the part to be formed 21
Pressing I by the respective molding surfaces 521.6a against both surfaces of
F transfer is performed.
切断刃4の作動開始時期及び切断開始時期は、人々型部
材5.6の作動開始時期]゛=0と同時であってよいが
、この切断刃4によるガラス流体2の切断路1峙朋′1
゛1は型部材5.6がガラス流体2を保持すると同時か
少なくとも保持した後でなければならない。The operation start time and cutting start time of the cutting blade 4 may be at the same time as the operation start time of the human-shaped member 5. 1
1 must be at the same time as, or at least after, the mold member 5.6 retains the glass fluid 2.
その後、切断刃4は元の状態に復帰せしめられる。第8
図には、この切断刃4の復帰開始時期を1゛4とし、復
帰終了時期なT、として示しである。好ましくは、切断
刃4の作動開始時期1゛=0から復帰開始時期′「4ま
でに要する時間を0.3〜0.4sとする。Thereafter, the cutting blade 4 is returned to its original state. 8th
In the figure, the return start time of the cutting blade 4 is indicated as 1.4, and the return end time is indicated as T. Preferably, the time required from the operation start time 1'=0 of the cutting blade 4 to the return start time '4 is 0.3 to 0.4 seconds.
切断リング7の作動開始時期ゴ、は、第5図に示すよう
に、少なくとも切断リング7による被成形部21の外周
切断終了(1’ 3 ) +ii+に切断刃4によるガ
ラス流体2の切断が終7’(Tよ°)した状態となるよ
うにするのが好ましい。こうすることにより、切断リン
グ7の切断動作が終了した時点においてガラス流体2は
切断刃4により既に切り離された状態にあり、切断リン
グ7で切取られた切断片22は容易に第1の型部材5の
外部即ち環状溝40内に移動することができる。As shown in FIG. 5, the operation start timing of the cutting ring 7 is at least when the cutting ring 7 finishes cutting the outer periphery of the part to be formed 21 (1' 3 )+ii+, and the cutting blade 4 finishes cutting the glass fluid 2. It is preferable to set the angle 7' (T). By doing this, the glass fluid 2 is already cut off by the cutting blade 4 when the cutting operation of the cutting ring 7 is finished, and the cut piece 22 cut by the cutting ring 7 is easily attached to the first mold member. 5 into the external or annular groove 40.
かくして、切断リング7は第2の型部材6の外周に沿っ
て摺動しつつ被成形部21の外周を切断し、該被成形部
2Iの外周形状を形成する。In this way, the cutting ring 7 cuts the outer periphery of the molded part 21 while sliding along the outer periphery of the second mold member 6, thereby forming the outer peripheral shape of the molded part 2I.
その後、切断リング7は切断終了時(T3)の状態を維
持し、被成形部2Iの外周を保持したままその温度差に
より被成形部21を外周から冷却し、該被成形部21の
外周付近は粘度を増してその形状が定着する。Thereafter, the cutting ring 7 maintains the state at the end of cutting (T3), cools the molded part 21 from the outer periphery due to the temperature difference while holding the outer periphery of the molded part 2I, and cools the molded part 21 from the outer periphery near the outer periphery of the molded part 21. increases in viscosity and fixes its shape.
一方、型部材5.6による抑圧後、該型部材と被成形部
21の温度差により該被成形部21は両表面から冷却さ
れて粘度を増し、表面形状が安定化する。On the other hand, after being suppressed by the mold member 5.6, the molded part 21 is cooled from both surfaces due to the temperature difference between the mold member and the molded part 21, increasing its viscosity and stabilizing its surface shape.
次いで、第6図に小すように、ガイドブロック13を作
動させて第1の型部材5を元の状態に復ん)する。この
作動開始時期な゛「6とし、作動路r時期なT7とし、
切断リング7を元の状態に作動する開始時期を第1の型
部材5の復帰終了時期゛「7と同時かその終j′後とす
ると、切断リング7の作動開始111iにおいて被成形
部21は該切断リング7により保持された状態にあり、
自然に落下することがない。Next, as shown in FIG. 6, the guide block 13 is operated to return the first mold member 5 to its original state. The operation start time is set to 6, the operation path r period is set to T7,
If the start time of operating the cutting ring 7 to its original state is at the same time as the return end time of the first mold member 5 or after its end, the part to be formed 21 is being held by the cutting ring 7;
It will not fall naturally.
被成形部即ち成形品23の取り出しは、切断リング7の
復帰終了(’r”、l)と同時に行なう、、これは、周
知の吸着ハンド等を用いて行なうことができる。この取
出し作業の終了後、第2の型部材6を元の状態に復帰せ
しめる。第8図には5この第2の型部材6の復帰開始時
期をT、とし、復帰終了時期をTooとしである。The part to be formed, that is, the molded product 23, is taken out at the same time as the return of the cutting ring 7 is completed ('r'', l).This can be done using a well-known suction hand or the like. After that, the second mold member 6 is returned to its original state.In FIG. 8, the return start time of the second mold member 6 is T, and the return end time is Too.
なお、第7Mに示すように、成形品23の取出し時にお
いて、型部材6を型部材5の方向に押出ずことにより成
形品23を切断リング7の保持状態から解除して、成形
品23の取り出しを容易にするようにしてもよい。As shown in No. 7M, when taking out the molded product 23, the molded product 23 is released from the holding state of the cutting ring 7 by not pushing out the mold member 6 in the direction of the molded member 5, and the molded product 23 is removed. It may also be designed to facilitate removal.
以]二のような動作において、成形用型5.6によるプ
レス成形は、ガラス流体2の先端即ち切断跡3を除いた
部分に対して行なわれるため、得られた成形品23にシ
ャーマーク等の表面欠陥が生じない。In the second operation, the press molding by the molding die 5.6 is performed on the tip of the glass fluid 2, that is, the portion excluding the cut marks 3, so the resulting molded product 23 may have shear marks, etc. No surface defects occur.
型部材5.6により形成されるキャビティ容積は、夫々
の型部材に抑圧動作を行なわしめる不図示のシリンダー
のストロークにより設定することができる。即ち、設定
されたシリンダーのストロークによって、抑圧時におけ
る各型部材5.6間の最短接近幅が決まり、これが型部
材5.6の成形面間隔を規制する。The volume of the cavity formed by the mold parts 5.6 can be set by the stroke of a cylinder, not shown, which exerts a restraining action on the respective mold part. That is, the set stroke of the cylinder determines the shortest approach width between the mold members 5.6 during compression, which regulates the distance between the molding surfaces of the mold members 5.6.
又1本実施例においては、ガイドビン15とガイド孔1
6から構成されたガイド部材により型部材5.6の押l
E動作が案内され、これら型部材5.6の軸ずれが矯正
されるため、製造される成形品23は高精度の光軸を有
する光?素子とじて使用することができる。In addition, in this embodiment, the guide bin 15 and the guide hole 1
The mold member 5.6 is pushed by the guide member composed of 6.
Since the E motion is guided and the axis misalignment of these mold members 5 and 6 is corrected, the manufactured molded product 23 has a highly accurate optical axis. The device can be used together.
又、1〕記ヒーター32.3:3の加熱手段、これに温
度制御を行なうための熱電対34.35及び不図示のコ
ントローラーにより、熱膨張のバラツキによるガイド部
材組IIg間のピッチ変動がなくなり、これらガイド部
材の嵌合及び摺動動作は円滑に行なわれる。In addition, 1) The heating means of the heater 32.3:3, the thermocouple 34.35 for temperature control, and the controller (not shown) eliminate pitch fluctuations between the guide member sets IIg due to variations in thermal expansion. The fitting and sliding movements of these guide members are performed smoothly.
さらに、成形品23の表面形状及び性状は各型部材5.
6の夫々の成形面5a、6aにより決まる。成形品23
の外周形状は切断リング7の内周形状により決まり、該
切断リング7の切断動作と同時に成形品21の外周が形
成される。Furthermore, the surface shape and properties of the molded product 23 are determined by each mold member 5.
It is determined by the respective molding surfaces 5a and 6a of 6. Molded product 23
The outer circumferential shape of the molded product 21 is determined by the inner circumferential shape of the cutting ring 7, and the outer circumference of the molded product 21 is formed simultaneously with the cutting operation of the cutting ring 7.
なお、以1説明したプレス成形装置は、成形用累材たる
ガラス流体が下方に流下するノズルに対応して左右横方
向から押圧動作を行なう成形用型が用いであるが、本発
明はこのような流ド形式及び成形用型に限定されるもの
ではなく、例えば横方向或いは傾斜方向に供給されるガ
ラス流体に対して構成される成形用型を用いることもで
きる。The press molding apparatus described below uses a mold that performs pressing operations from left and right directions in response to a nozzle through which glass fluid, which is a molding material, flows downward. The present invention is not limited to a straight flow type and mold, but it is also possible to use a mold configured for glass fluid supplied laterally or obliquely, for example.
(発明の効果)
以1説明したように、本発明によれば、成形用型の熱膨
恨に噴ε背されず、成形用型と切断部材の刃頭部との僅
少空隙を初期の間隔に保つことができ、切断部材の成形
用型に対するカジリ或は食い付きを防1トシて円バ1な
成形動作を行なうことができる。(Effects of the Invention) As explained in 1, according to the present invention, the initial distance between the mold and the blade head of the cutting member is reduced, without being affected by the thermal expansion of the mold. It is possible to prevent the cutting member from galling or biting against the mold, and to perform a circular molding operation.
又、このような成形装置により得られた成形品の外周に
は荒れが生ぜず、パリ等の発生もない。Moreover, the outer periphery of the molded product obtained by such a molding apparatus is free from roughness and no occurrence of flakes or the like.
第1図は本発明の実施例を示すプレス成形装置i’1の
概略的斜視図である。第2図〜第7図は第1図に示す装
置の適用例を示す成形装置の要部断面図であり、同装置
の工程順の作動状態が示しである。第8図は第1図に示
すプレス成形装置の各作動部のタイミングチャートを示
す図である。
l・・・ノズル
2・・・ガラス流体
4・・・切断刃
5・・・第1の型its材
6・・・第2の型部材
7・・・切断リング
7a・・・刃頭部
21・・・被成形部
22・・・切断片
2コ3・・・成形品
24・・・僅少空隙
25・・・切断リング加熱用ヒーター
26・・・切断リング温度測定用熱電対27・・・切断
リングと成形用型との間隔32.33・・・ガイドブロ
ック内のヒーター代理人 弁理L 山 ド 穣 甲−
第2図
第3図
第4図
第5図
第6図
を
第7図FIG. 1 is a schematic perspective view of a press molding apparatus i'1 showing an embodiment of the present invention. FIGS. 2 to 7 are sectional views of essential parts of a molding apparatus showing an example of application of the apparatus shown in FIG. 1, and show the operating state of the apparatus in the order of steps. FIG. 8 is a diagram showing a timing chart of each operating section of the press molding apparatus shown in FIG. 1. l... Nozzle 2... Glass fluid 4... Cutting blade 5... First mold its material 6... Second mold member 7... Cutting ring 7a... Blade head 21 ... Molded part 22 ... Cut pieces 2 pieces 3 ... Molded product 24 ... Slight gap 25 ... Cutting ring heating heater 26 ... Cutting ring temperature measurement thermocouple 27 ... Distance between cutting ring and mold 32.33... Heater agent in guide block Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 and Figure 7
Claims (1)
所定間隔を保って前記ガラス素材の余剰部分を切断する
切断部材を設け、前記切断部材の刃頭部内周における前
記成形用型と前記切断部材との所定間隔を僅少空隙とし
、前記切断部材内に前記空隙を所定量に保つように温度
制御可能な加熱手段を配設したことを特徴とする光学素
子の成形装置。A cutting member for cutting the excess portion of the glass material at a predetermined interval is provided on the outer periphery of a mold for press-molding a molten glass material, and the cutting member is connected to the mold at the inner periphery of the blade head of the cutting member. 1. A molding apparatus for an optical element, characterized in that a predetermined distance between the cutting member and the member is a slight gap, and heating means capable of temperature control is disposed within the cutting member so as to maintain the gap at a predetermined amount.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2771188A JPH01203234A (en) | 1988-02-10 | 1988-02-10 | Device for forming optical element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2771188A JPH01203234A (en) | 1988-02-10 | 1988-02-10 | Device for forming optical element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01203234A true JPH01203234A (en) | 1989-08-16 |
Family
ID=12228583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2771188A Pending JPH01203234A (en) | 1988-02-10 | 1988-02-10 | Device for forming optical element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01203234A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5322541A (en) * | 1991-03-28 | 1994-06-21 | Matsushita Electric Industrial Co., Ltd. | Method of producing glass blank |
US5540746A (en) * | 1991-10-09 | 1996-07-30 | Sumitomo Heavy Industries, Ltd. | Glass forming apparatus |
-
1988
- 1988-02-10 JP JP2771188A patent/JPH01203234A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5322541A (en) * | 1991-03-28 | 1994-06-21 | Matsushita Electric Industrial Co., Ltd. | Method of producing glass blank |
US5540746A (en) * | 1991-10-09 | 1996-07-30 | Sumitomo Heavy Industries, Ltd. | Glass forming apparatus |
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