JPH0445460B2 - - Google Patents
Info
- Publication number
- JPH0445460B2 JPH0445460B2 JP3540288A JP3540288A JPH0445460B2 JP H0445460 B2 JPH0445460 B2 JP H0445460B2 JP 3540288 A JP3540288 A JP 3540288A JP 3540288 A JP3540288 A JP 3540288A JP H0445460 B2 JPH0445460 B2 JP H0445460B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- cutting
- molding
- glass
- molded product
- 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
Links
- 238000005520 cutting process Methods 0.000 claims description 103
- 238000000465 moulding Methods 0.000 claims description 64
- 239000011521 glass Substances 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 28
- 230000003287 optical effect Effects 0.000 claims description 21
- 239000006060 molten glass Substances 0.000 claims description 12
- 239000000047 product Substances 0.000 description 34
- 238000000034 method Methods 0.000 description 25
- 239000012530 fluid Substances 0.000 description 23
- 238000003825 pressing Methods 0.000 description 16
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- -1 SiC Chemical class 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 206010049040 Weight fluctuation Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000006082 mold release agent Substances 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
- 239000000843 powder Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910000601 superalloy Inorganic materials 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
- C03B2215/70—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)
- Moulds For Moulding Plastics Or The Like (AREA)
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オームの成形装置
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 apparatus for molding an optical element with good weight accuracy or a preform suitable for reheat pressing thereof.
（従来の技術）
近年、所定の表面精度を有する成形用型内にガ
ラス素材を収容してプレス成形することにより、
研削及び研摩等の後加工を不要とした高精度の光
学素子を成形する方法が開発されている。(Prior art) In recent years, by press-molding a glass material in a mold with a predetermined surface precision,
Methods have been developed for molding high-precision optical elements that do not require post-processing such as grinding and polishing.
このプレス成形法には、一般にリヒートプレス
法を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
材料の必要量を切断し、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学機能面を押圧転写して
光学素子を成形する方法である。 In the reheat press method, the necessary amount of glass material that has been melted and solidified in advance is cut, the weight is adjusted using methods such as sanding, and the resulting glass pellets are placed in a mold for molding. This is a method of molding an optical element by heating the molds simultaneously or separately to a pressing temperature, and then pressing and transferring the optical functional surface formed on the mold by press molding.
一方、ダイレクトプレス法は、溶融ガラス流出
口より流出若しくは押出される溶融ガラス流の必
要量を切断刃により切断し、これを成形用型内に
直接落下させるか又はシユートによつて投入し、
しかる後成形用型を押圧して光学素子を成形する
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 mold or introduced by a chute.
This method then presses a mold to mold the optical element.
又、上記のリヒートプレス法において、切断及
び砂ずり等のような生産性の低い工程を経ずに上
記のダイレクトプレス法における如く、溶融ガラ
スを成形用型に入れてプレス成形し、最終製品に
近似した形状の予備成形品（プリフオーム）を得
た上で該プリフオ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上に精度の高い光学機
能面を有する成形用型に入れてプレス成形を行な
う方法がある。 In addition, in the above reheat press method, molten glass is put into a mold and press-formed into a final product, as in the above direct press method, without going through low productivity steps such as cutting and sanding. After obtaining a preform with a similar shape, press molding is performed by placing the preform into a mold having an optical functional surface with the same or higher precision than the shape and surface precision of the final product. There is a way.
（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
び寸法精度が要求され、又このため上記のいずれ
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十分に重量調整がな
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
A certain level of surface accuracy and dimensional accuracy are required to obtain good image formation quality, and for this reason, in any of the above methods, the glass material supplied for press forming to obtain the final product must be sufficiently weight-adjusted. must be done.
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、ガラス小塊の重量調整を切
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型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 forming using small glass lumps, the weight of the glass lumps is adjusted by cutting, sanding, etc., so grit remains on the surface of the molded product, and the glass small lumps are removed before press forming. When heating the lump, there is a problem in that the mold release agent applied to prevent the glass and the heating tray from fusing together bites into the surface of the molded product during pressing, significantly deteriorating the surface precision of the molded product.
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、成形品にシヤー
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、成形品の重量調整を溶融ガラ
ス流の切断によつて行なうため、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
脈動等により成形品に重量変動が生じ、所定の寸
法精度が得られないという問題点もある。 Further, in the method of directly press-molding using molten glass, there is a problem that cutting marks called shear marks are generated on the molded product when cutting with a cutting blade, and the surface precision of the molded product is deteriorated. In addition, in this press molding method, the weight of the molded product is adjusted by cutting the molten glass flow, so weight fluctuations may occur in the molded product due to temperature changes in the molten glass flow, cutting timing, pulsation of the glass flow, etc. However, there is also the problem that a predetermined dimensional accuracy cannot be obtained.
なお、特にシヤーマークの発生を防止したプレ
ス成形法としては、特公昭41−9190号公報或いは
特開昭61−132523号公報に記載されたものがあ
る。 In addition, as a press molding method which particularly prevents the occurrence of shear marks, there is a method described in Japanese Patent Publication No. 41-9190 or Japanese Patent Application Laid-open No. 132523/1983.
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、成形用型の押圧時
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圧動作が進
行するに伴い、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
てこのはみ出し部分の破断及び破断面を仕上げる
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. When the mold is pressed, 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 pressing operation of the mold progresses, this excess glass increases its outflow resistance and is cooled by the mold, increasing its viscosity, until it is completely cut off between the mold and the opposing anvil. The molded product is cooled without being completely wet, and a protruding portion is formed on the outer periphery of the molded product. Therefore, after press forming, it is necessary to break the protruding portion and finish the broken surface. Further, due to variations in the size of the molten glass flow, the thickness of the glass between the above-mentioned molded product and the protruding portion varies, resulting in variations in the thickness of the molded product. There is also the problem that weight adjustment cannot be performed with high precision.
一方、特開昭61−132523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ツド又はガラスシー
トが必要となる。 On the other hand, in the molding method described in JP-A No. 61-132523, the precision of the molded product depends on the size of the flowing glass body before punching it, and highly accurate dimensions and shapes can be produced. A rod or glass sheet is required.
本発明者等は、上述のような問題点を解決すべ
く、ガラス流体を狭むように一対の成形用型を対
向配置するとともに該成形用型のキヤビテイを設
定し、前記ガラス流体を前記成形用型で互いに押
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前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
子の製造方法について既に提案してある。 In order to solve the above-mentioned problems, the present inventors arranged a pair of molds facing each other so as to narrow the glass fluid, and set a cavity of the mold, so that the glass fluid could be poured into the mold. A method for manufacturing an optical element has already been described, which comprises forming a molded part by pressing each other together, and then cutting and separating the molded part and other parts using a cutting member provided on the outer periphery of the mold. I have suggested it.
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、シヤーマーク
等の表面欠陥がなく、寸法精度及び重量精度がす
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 cut marks of the glass fluid, and the outer peripheral side surface of the molded product can be formed with high precision using the cutting member provided on the outer periphery of the mold, and shear marks can be formed. An optical element with excellent dimensional accuracy and weight accuracy can be obtained without surface defects such as .
本発明は、この種の製造方法に好適する装置を
提供するものである。 The present invention provides an apparatus suitable for this type of manufacturing method.
この種の装置においては、成形用型が加熱され
て熱膨張すると、切断部材が成形用型の外周で摺
動する際カジリを起こして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全く移動できないとい
う事態を招くおそれがある。又、切断部材が成形
用型で摩耗して切断部材の刃が荒れてしまうと切
断後の成形品外周にも荒れが生じたり、或は切り
粉が付着し好ましくない。 In this type of device, if the mold is heated and thermally expanded, the cutting member will not only jam when sliding on the outer periphery of the mold, making it impossible to move smoothly, but also the cutting member will not move smoothly. There is a risk that it will get stuck in the mold and cannot be moved at all. Furthermore, if the blade of the cutting member becomes rough due to abrasion in the mold, the outer periphery of the cut molded product may become rough or chips may adhere to it, which is undesirable.
さらに、この種の装置においては、切断部材及
び成形用型の材料を選定する際、耐熱性或は耐摩
耗性等の条件が厳しく要請されるため、好適する
材料が極めて限定される。 Furthermore, in this type of device, when selecting materials for the cutting member and the molding die, conditions such as heat resistance and abrasion resistance are strictly required, so suitable materials are extremely limited.
本発明は上記のような事情に鑑みて成されたも
ので、成形用型の熱膨張によるカジリ等の発生を
防止し、切断部材及び成形用型に用いる材料選択
の幅を拡大し得る光学素子の成形装置を提供する
ことを目的とする。 The present invention has been made in view of the above-mentioned circumstances, and provides an optical element that can prevent the occurrence of galling due to thermal expansion of a mold and expand the range of material selection for cutting members and molds. The purpose of the present invention is to provide a molding device.
（問題点を解決するための手段）
上述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と該成形用型の外周に
所定間隔を保つて設けられた前記ガラス素材の余
剰部分を切断する切断部材とを有する光学素子の
成形装置において、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、前記切断部材と前記成形用型と
の空隙に前記刃頭部内周における空隙を所定量に
保つ保持部材を前記成形装置の基体に保持した状
態で介装したことを特徴とす。(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, the optical element molding apparatus of the present invention includes a mold for press-molding a molten glass material and an outer periphery of the mold. In the optical element molding apparatus, the optical element molding apparatus includes a cutting member for cutting the surplus portion of the glass material, which is provided at a predetermined interval between the molding die and the cutting member at the inner periphery of the blade head of the cutting member. The predetermined interval is a slight gap, and a holding member is interposed in the gap between the cutting member and the mold to keep the gap at the inner periphery of the blade head at a predetermined amount while being held on the base of the forming device. Features.
（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を保
つて切断部材が設けられている。該切断部材は成
形用型の外周に沿つ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, a cutting member is provided on the outer periphery of the mold at a predetermined distance from the mold. 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、このような切断部材の先端付近を構成
する刃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、上記刃頭部は切断部材
の先端（刃先部）のみを構成するものではなく、
該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
程度に構成されたものである。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
を発生するようなことがない。 Furthermore, a slight gap is provided between the inner periphery of the blade head constituting the vicinity of the tip of such a cutting member and the mold. Here, the blade head does not constitute only the tip (blade tip) of the cutting member;
It has a certain width from the tip, and this width is configured to such an extent that the blade head does not come off from the mold during the moving operation of the cutting member to cut the excess portion of the outer periphery of the molded product. It is something that 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 occurrence of galling or sticking against the mold.
さらに、本発明においては、上記の刃頭部内周
と成形用型との僅少空隙を一定の間隔に保つよう
上述した切断部材と成形用型との間隙に保持部材
を挿着してある。この保持部材は、成形装置の基
体に保持された状態にあり、切断部材の移動方向
に対しては移動しない。又、該保持部材は切断部
材と成形用型に対して摺動可能に接触した状態に
ある。ただし、切断部材と成形用型のいずれか一
方に固定した状態にあつてもよい。 Further, in the present invention, a holding member is inserted into the gap between the cutting member and the mold to maintain a small gap between the inner periphery of the blade head and the mold at a constant distance. This holding member is held by the base of the molding device and does not move in the direction of movement of the cutting member. The holding member is also in slidable contact with the cutting member and the mold. However, it may be fixed to either the cutting member or the mold.
上記の刃頭部内周における空隙の間隔は20μ〜
50μとするのが好ましい。この空隙を20μより小
さく構成すると成形用型に対して接触しやすくな
る。空隙を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、かえつ
て切断部材の移動動作を妨げてしまう。又、この
場合、空隙に侵入したガラス素材が冷却されて成
形品にバリ等が生じ好ましくない。 The gap between the gaps on the inner periphery of the blade head above is 20μ~
It is preferable to set it to 50μ. If this gap is configured to be smaller than 20μ, it will be easier to contact the mold. If the gap is configured to be larger than 50 μm, the glass material will enter the gap during press molding, and the movement of the cutting member will be hindered. Further, in this case, the glass material that has entered the gap is cooled and burrs are generated on the molded product, which is not preferable.
また、上記保持部材として、FC25のような摩
耗しやすいが高温での滑りをよくするような材料
を用いるか、或は耐摩耗性に優れるTiN被覆、
酸化アルミニウム、セラミツク材を使用した被覆
を施すことによつて成形用型或は切断部材との摺
動性を円滑にしてある。 In addition, for the above-mentioned holding member, a material such as FC25 that is easily worn but has good sliding properties at high temperatures may be used, or a TiN coating with excellent wear resistance may be used.
By applying a coating using aluminum oxide or ceramic material, smooth sliding performance with the mold or cutting member is achieved.
（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
り切断部材たる切断リングが設けられた成形用型
の周辺が示してある。第２〜７図は第１図に示す
装置の適用例を示す図であり、工程順の作動状況
が示してある。 FIG. 1 is a sectional view of a main part of an apparatus according to an embodiment of the present invention, showing the periphery of a mold in which a cutting ring serving as a cutting member is provided. FIGS. 2 to 7 are diagrams showing examples of application of the apparatus shown in FIG. 1, and show operating conditions in the order of steps.
まず、第１図に示すように、本実施例装置の主
要部は、型部材６と切断部材たる切断リング７と
から成り、切断リング７は型部材６の外周に所定
の間隔を有する間隙４２を有して設けられ、不図
示の駆動手段により該型部材６の外周に沿つて移
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夫々の成形面が押圧転写
される。上記した切断リング７と型部材６との間
隙４２は比較的大きくてよい。 First, as shown in FIG. 1, the main parts of the apparatus of this embodiment include a mold member 6 and a cutting ring 7 which is a cutting member. The mold member 6 is movable along the outer periphery of the mold member 6 by a drive means (not shown). The mold member 6 is provided with a molding surface 6a, and the molding surface 6a of the opposing mold member 5 is provided, facing the molding surface 5a of the opposing mold member 5. During press molding, these molding surfaces A glass material is supplied in between, and each molding surface is pressed and transferred. The gap 42 between the cutting ring 7 and the mold member 6 described above may be relatively large.
また、型部材６の外周と切断リング７の刃頭部
７ａの内周は僅少な間隙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てある。間隙２４の間
隔は20μ〜50μとするのが好ましい。この空隙２
４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。間隙２４を50μより大きく構成する
と、プレス成形の際、ガラス素材がこの間隙に侵
入しやすくなり、かえつて切断リング７の移動動
作を妨げてしまう。又、この場合、成形品にバリ
等が生じ、好ましくない。 Further, the outer periphery of the mold member 6 and the inner periphery of the blade head 7a of the cutting ring 7 are configured to have a small gap 24. The width of the blade head 7a is such that when the cutting ring 7 moves around the outer periphery of the mold member 6, the blade head 7a
It is configured to the extent that it does not deviate from the above. The distance between the gaps 24 is preferably 20μ to 50μ. This gap 2
4 is smaller than 20μ, it is difficult to control the temperature of the cutting ring 7 to adjust its thermal expansion, as shown below, and the mold member 6 is likely to be galled. If the gap 24 is configured to be larger than 50μ, the glass material will easily enter the gap during press molding, and the movement of the cutting ring 7 will be hindered. Moreover, in this case, burrs etc. occur on the molded product, which is not preferable.
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WC、対熱金
属として例えばSUS、炭素工具鋼として例えば
SKD、金属以外の耐熱材として例えばSiC、
Al2O3等のセラミツク及びサーメツト等が挙げら
れ、使用雰囲気、必要温度及び使用するガラス材
によつて適宜選定する。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 alloy such as WC, heat-resistant metal such as SUS, and carbon tool steel such as SUS.
SKD, heat-resistant materials other than metals such as SiC,
Examples include ceramics such as Al 2 O 3 and cermets, and are appropriately selected depending on the operating 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.
さらに本実施例装置においては、上記型部材６
と切断リング７との間隙４２に保持部材４０が介
装されている。この保持部材４０は切断リング７
の刃頭部７ａの内周と型部材６の外周との間隙２
４を初期状態の間隔に保持するために設けられた
もので、上述のように型部材６と切断リング７と
の間隙４２に介装されるとともに該装置の基体と
して機能する支持部材１０に固定されている。こ
の固定方法は、例えば図示したように、支持部材
１０に対してボルト締結４１により行なうことが
できる。保持部材４０と型部材６とは摺動可能な
状態にあり、保持部材４０と切断リング７とは図
示のように固定状態にしてもよい。 Furthermore, in the apparatus of this embodiment, the mold member 6
A holding member 40 is interposed in a gap 42 between the cutting ring 7 and the cutting ring 7. This holding member 40 is the cutting ring 7
Gap 2 between the inner periphery of the blade head 7a and the outer periphery of the mold member 6
4 in the initial state, and as mentioned above, it is inserted in the gap 42 between the mold member 6 and the cutting ring 7, and is fixed to the support member 10, which functions as the base of the device. has been done. This fixing method can be performed, for example, by bolting 41 to the support member 10 as shown. The holding member 40 and the mold member 6 may be in a slidable state, and the holding member 40 and the cutting ring 7 may be in a fixed state as shown.
上記保持部材として、FC25のような摩耗しや
すいが高温での滑りをよくするような材料を用い
るか、或は耐摩耗性に優れるTiN被覆、酸化ア
ルミニウム、セラミツク材を使用した被覆を施す
ことによつて成形用型或は切断部材との摺動性を
円滑にしてある。 For the above-mentioned retaining member, it is recommended to use a material such as FC25 that is easily worn but has good sliding properties at high temperatures, or coated with TiN coating, aluminum oxide, or ceramic material that has excellent wear resistance. Therefore, the sliding property between the mold and the cutting member is smooth.
なお、保持部材４０は上記の材料により一層構
造とするばかりか、構成する各々の材料、又これ
に接触する材料により二層構造としてもよい。 The holding member 40 may not only have a single-layer structure made of the above-mentioned materials, but may also have a two-layer structure made of each of the constituent materials and the material that comes into contact with it.
３１は型部材６に内設されたヒーターであり、
このヒーターには型温検出用の熱電対が内蔵さ
れ、不図示のコントローラーに接続され温度制御
が可能になつている。 31 is a heater installed inside the mold member 6;
This heater has a built-in thermocouple for detecting mold temperature, and is connected to a controller (not shown) to enable temperature control.
上述のような保持部材４０により切断リング７
の刃頭部７ａの内周と型部材６との空隙２４は初
期の間隔を保持し、プレス成形の際切断リング７
と型部材６とは互いに摩耗することなく移動する
ことができる。 The cutting ring 7 is held by the holding member 40 as described above.
The gap 24 between the inner periphery of the blade head 7a and the mold member 6 maintains the initial distance, and the cutting ring 7
The mold member 6 and the mold member 6 can be moved without wearing each other.
なお、上記のように、保持部材４０の材料とし
て耐摩耗性に優れるFC25を使用した場合、プレ
ス成形の際の摺動によつて生じた粉は型部材６と
切断リング７との間隙４２に滞留するか、或は刃
先部７ｂとは反対方向の型部材６と切断リング７
との隙間４４から排出され成形品の外周に付着し
たりするおそれはない。 As mentioned above, when FC25, which has excellent wear resistance, is used as the material for the holding member 40, the powder generated by sliding during press molding is trapped in the gap 42 between the mold member 6 and the cutting ring 7. The mold member 6 and the cutting ring 7 stay in place or in the direction opposite to the cutting edge 7b.
There is no risk that the material will be discharged from the gap 44 between the molded product and adhere to the outer periphery of the molded product.
第２図に示すプレス成形装置に上述した型部材
６及びカツター７等の適用例が示してある。 An example of application of the mold member 6, cutter 7, etc. described above is shown in the press molding apparatus shown in FIG.
以下、この第２〜７図を用いて本実施例装置の
作動について説明する。 Hereinafter, the operation of the apparatus of this embodiment will be explained using FIGS. 2 to 7.
１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。 Reference numeral 1 denotes a nozzle through which molten glass flows out from a melting furnace (not shown), and a glass fluid 2 flows out from this nozzle. Reference numeral 4 denotes 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).
本実施例に示すガラス成形装置は、ガラス流体
２がノズル１から流下する形式のものに対して構
成してあり、１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
角方向から狭むように互いに対向した状態で配置
してある。 The glass forming apparatus shown in this embodiment is configured for a type in which glass fluid 2 flows down from a nozzle 1, and includes a first mold member 5 and a second mold member constituting a pair of molds. The members 6 are arranged to face each other so as to narrow the glass fluid 2 from a substantially right angle direction.
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面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
動源により上方から流下するガラス流体２の流出
方向に対して互いに略直角方向に移動して押圧動
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
立した開閉動作を行なうことができる。 As described above, each of the mold members 5 and 6 has molding surfaces 5a and 6a whose opposing surfaces are mirror-finished.
have. Then, the first mold member 5 and the second
The mold members 6 are moved in directions substantially perpendicular to each other with respect to the outflow direction of the glass fluid 2 flowing down from above by a driving source such as a cylinder (not shown), and a pressing operation is performed. However, these first and second mold members 5 and 6 can be opened and closed independently by separately provided drive sources.
これら型部材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、製造すべき成形品の肉厚を調整すること
ができる。 By adjusting the operating strokes of these mold members 5 and 6 and setting the distance between them during pressure molding, the 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ツク１４が
設けられ、このガイドブロツク１４は支持部材１
０に固定されている。又、型部材５の外周にもガ
イドブロツク１３が設けられていて該型部材５を
包囲し、このガイドブロツク１３は支持部材１１
に支持されている。支持部材１０，１１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立した動作で支持部材１
０，１１を作動する。支持部材１０の作動により
ガイドブロツク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。 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.
Fixed to 0. Further, a guide block 13 is provided on the outer periphery of the mold member 5 to surround the mold member 5, and this guide block 13 is connected to the support member 11.
is supported by The support members 10 and 11 are each connected to a drive source (not shown) such as a cylinder, and each of the support members 1 is operated independently by the drive of the drive source.
Activate 0,11. 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. Moreover, the first mold member 5 reciprocates in the direction of the second mold member 6 by the operation of the support member 11 .
又、ガイドブロツク１３にはガイドピン１５が
ガイドブロツク１４側に突出するよう固着され、
ガイドブロツク１４には上記ガイドピン１５に嵌
合して摺動するガイド孔１６が設けられている。
ガイドブロツク１３，１４が作動し互いに接近す
るとガイドピン１５がガイド孔１６内で摺動しつ
つ移動して型部材５，６の押圧動作が案内され
る。 Further, a guide pin 15 is fixed to the guide block 13 so as to protrude toward the guide block 14 side.
The guide block 14 is provided with a guide hole 16 into which the guide pin 15 slides.
When the guide blocks 13 and 14 operate and approach each other, the guide pin 15 slides within the guide hole 16 and guides the pressing operation of the mold members 5 and 6.
型部材５，６の夫々の内部にはヒーター３０，
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。 A heater 30 is provided inside each of the mold members 5 and 6.
31 is provided, and the mold members 5 and 6 are heated to a predetermined temperature by this heater.
又、ガイドブロツク１３，１４内には夫々ヒー
ター３２，３３及び熱電対３４，３５が設けられ
ている。各ヒーター３２，３３はガイドブロツク
１３，１４内で夫々のガイドピン１５及びガイド
孔１６の相互のピツ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による温度検出により外部に設
けられたコントローラーにより温度制御される。 Further, heaters 32, 33 and thermocouples 34, 35 are provided in the guide blocks 13, 14, respectively. A plurality of heaters 32 and 33 are provided in the guide blocks 13 and 14 at positions where the respective guide pins 15 and guide holes 16 can be evenly heated so as to keep a predetermined distance between them.
The temperature is controlled by an external controller based on temperature detection by thermocouples 34 and 35.
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 device is shown in Figures 2 to 7 and 8.
This will be explained using figures.
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の各部の作動
タイミングを示すタイミングチヤートであり、横
軸は時間Ｔを示す。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 the order of each process, and FIG. , is a timing chart showing the operation timing of each part of the cutting blade 4 and the cutting ring 7, and the horizontal axis shows time T. The operation timing of these actuating parts can be controlled by a controller (not shown) connected to each actuating part.
第２図はプレス成形直前の状態であり、ノズル
１からはガラス流体２が流下している。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より下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の押圧動作を開始す
る。この押圧動作において、ガイドピン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つてもこれら型部材
５，６がガイド部材に案内されて軸ずれが矯正さ
れる。 FIG. 2 shows the state immediately before press molding, with glass fluid 2 flowing down from nozzle 1. When the tip of the glass fluid 2, that is, the cutting mark 3, flows downward from the opposing molding surfaces 5a, 6a, the pressing operation of the first mold member 5 and the second mold member 6 is started. In this pressing operation, the guide pin 15 fits into the guide hole 16 and slides, so that even if the mold members 5, 6 are slightly misaligned, the mold members 5, 6 are guided by the guide member and the shafts of the mold members 5, 6 are guided by the guide member. The deviation is corrected.
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に対する押圧動作終了時期
T2は双方において同時か多くとも±0.05sの誤差
に収めるのが好ましい。この誤差が大きいと型部
材５，６の片方のみがガラス流体２に衝突して該
ガラス流体２に横ブレが生じ好ましくない。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を押圧したままの状態を
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５ａ，６ａによる押圧転写が行
なわれる。 In FIG. 8, T=0 indicates the timing at which both mold members 5 and 6 start operating. The operation start timings of these mold members 5 and 6 may be the same on both sides, but the timing of the end of the pressing operation of the mold members 5 and 6 against the glass fluid 2
It is preferable that T 2 be at the same time or within an error of ±0.05 s on both sides. If this error is large, only one of the mold members 5 and 6 collides with the glass fluid 2, causing lateral wobbling of the glass fluid 2, which is undesirable. Thereafter, as shown in FIG. 3, the mold members 5 and 6 keep pressing the molded part 21 of the glass fluid 2 for a predetermined period of time, and during this time, the mold members 5 and 6 press the molded part 21 on both surfaces of the molded part 21. Pressure transfer is performed using surfaces 5a and 6a.
切断刃４の作動開始時期及び切断開始時期は、
夫々型部材５，６の作動開始時期Ｔ＝０と同時で
あつてよいが、この切断刃４によるガラス流体２
の切断終了時期T4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 are as follows.
The glass fluid 2 by the cutting blade 4 may be at the same time as the operation start time T=0 of the mold members 5 and 6, respectively.
The cutting end timing T4 must be at the same time as the mold members 5 and 6 hold the glass fluid 2, or at least after the mold members 5 and 6 hold 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
T4とし、復帰終了時期をT5として示してある。
好ましくは、切断刃４の作動開始時期Ｔ＝０から
復帰開始時期T4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. Figure 8 shows the timing at which the cutting blade 4 starts returning.
T 4 is indicated, and the return end time is indicated as T 5 .
Preferably, the time required from the operation start time T=0 of the cutting blade 4 to the return start time T4 is set to 0.3 to 0.4 seconds.
切断リング７の作動開始時期T1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（T3）前に切断刃４に
よるガラス流体２の切断が終了（T2）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５０内に移動することができる。 As shown in FIG. 5, the operation start timing T 1 of the cutting ring 7 is determined at least when the cutting blade 4 finishes cutting the glass fluid 2 (T 3 ) before the cutting ring 7 finishes cutting the outer periphery of the part to be formed 21 (T 3 ). T 2 ). By doing so, when the cutting operation of the cutting ring 7 is completed, the glass fluid 2 has already been cut off by the cutting blade 4, and the cut piece 22 cut by the cutting ring 7 is easily attached to the first mold member. 5 or into the annular groove 50.
かくして、切断リング７は第２の型部材６の外
周に沿つて摺動しつつ被成形部２１の外周を切断
し、該被成形部２１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 21.
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２１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 (T 3 ), cools the molded part 21 from the outer periphery due to the temperature difference while holding the outer periphery of the molded part 21, and cools the molded part 21 from the outer periphery. The viscosity increases in the vicinity and the shape becomes fixed.
一方、型部材５，６による押圧後、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 pressed by the mold members 5 and 6, the molded part 21 is cooled from both surfaces due to the temperature difference between the mold members and the molded part 21, increasing its viscosity and stabilizing its surface shape.
次いで、第６図に示すように、ガイドブロツク
１３を作動させて第１の型部材５を元の状態に復
帰する。この作動開始時期をT6とし、作動終了
時期を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
T7と同時かその終了後とすると、切断リング７
の作動開始前において被成形部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. This operation start time is T6 , the operation end time is T7 , and the start time for returning the cutting ring 7 to its original state is the return end time of the first mold member 5.
At the same time as T 7 or after its completion, cutting ring 7
Before the start of the operation, the part to be formed 21 is held by the cutting ring 7 and does not fall off 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（T8）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、この第
２の型部材６の復帰開始時期をT9とし、復帰終
了時期をT10としてある。 The part to be molded, that is, the molded product 23 is taken out at the same time as the return of the cutting ring 7 is completed (T 8 ). This can be done using a known suction hand or the like. After this removal work is completed, the second mold member 6
to return to its original state. In FIG. 8, the return start time of the second mold member 6 is indicated as T9 , and the return end time is indicated as T10 .
なお、第７図に示すように、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
すことにより成形品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 FIG. 7, when taking out the molded product 23, the molded product 23 is released from the state held by the cutting ring 7 by pushing out the mold member 6 in the direction of the mold member 5, and the molded product 23 is removed. It may be arranged to make it easier to take out.
以上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にシヤーマーク等の表面欠陥が生
じない。 In the above-described operation, press molding by the molding dies 5 and 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 has surface defects such as shear marks. does not occur.
型部材５，６により形成されるキヤビテイ容量
は、夫々の型部材に押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
ークによつて、押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 cavity capacity formed by the mold members 5 and 6 can be set by the stroke of a cylinder (not shown) that presses each mold member. That is, the set stroke of the cylinder determines the shortest approach width between the mold members 5 and 6 during pressing, and this regulates the distance between the molding surfaces of the mold members 5 and 6.
又、本実施例においては、ガイドピン１５とガ
イド孔１６から構成されたガイド部材により型部
材５，６の押圧動作が案内され、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学素子として
使用することができる。 In addition, in this embodiment, the pressing operation of the mold members 5 and 6 is guided by the guide member composed of the guide pin 15 and the guide hole 16, and the axis misalignment of these mold members 5 and 6 is corrected, so that the manufacturing process is improved. The molded product 23 can be used as an optical element having a highly accurate optical axis.
又、上記ヒーター３２，３３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相互間のピツチ変動がなくな
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。 Furthermore, the heating means of the heaters 32 and 33, the thermocouples 34 and 35 for temperature control, and a controller (not shown) eliminate pitch fluctuations between the guide members due to variations in thermal expansion, and the guide members Fitting and sliding operations occur 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２３の外周が形成される。 Further, the surface shape and properties of the molded product 23 are determined by the molding surfaces 5a, 6a of the mold members 5, 6, respectively. The outer peripheral shape of the molded product 23 is determined by the inner peripheral shape of the cutting ring 7, and the outer periphery of the molded product 23 is formed simultaneously with the cutting operation of the cutting ring 7.
なお、以上説明したプレス成形装置は、成形用
素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
が用いてあるが、本発明はこのような流下形式及
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。 Note that the press molding apparatus described above uses a mold that performs pressing operations from the left and right directions in response to the nozzle through which the glass fluid, which is the molding material, flows downward. The type and mold are not limited; for example, molds configured for transversely or obliquely supplied glass fluid may also be used.
（発明の効果）
以上説明したように、本発明によれば、成形用
型と切断部材の刃頭部との僅少空隙を所定の間隔
に保つことにより、切断部材の成形用型に対する
カジリ或は食い付きを防止して円滑なプレス成形
動作を行なうことができる。(Effects of the Invention) As explained above, according to the present invention, by maintaining a small gap between the mold and the blade head of the cutting member at a predetermined interval, the cutting member is prevented from galling or collapsing against the mold. It is possible to prevent jamming and perform smooth press forming operations.
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、バリ等の発生もない。 Moreover, the outer periphery of the molded product obtained by such a molding apparatus is free from roughness and no burrs or the like.
さらに、成形用型と切断部材が直接接触して摺
動することがないから、これらの成形用型或は切
断部材の材料に従来のような厳しい条件が課せら
れず材料の選定が容易になる。 Furthermore, since the molding die and the cutting member do not come into direct contact and slide, the selection of materials is facilitated because strict conditions are not imposed on the material of the molding die or the cutting member as in the past. .
第１図は本発明の実施例を示すプレス成形装置
の要部断面図である。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断面図であ
り、同装置の工程順の作動状態が示してある。第
８図は第１図に示すプレス成形装置の各作動部の
タイミングチヤートを示す図である。
１…ノズル、２…ガラス流体、４…切断刃、５
…第１の型部材、６…第２の型部材、７…切断リ
ング、７ａ…刃頭部、７ｂ…刃先部、２１…被成
形部、２２…切断片、２３…成形品、２４…僅少
空隙、４０…保持部材、４２…切断リングと成形
用型との間隙。
FIG. 1 is a sectional view of a main part of a press molding apparatus showing an embodiment of the present invention. FIGS. 2 to 7 are sectional views of a molding apparatus showing an example of application of the apparatus shown in FIG. 1, showing 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. 1... Nozzle, 2... Glass fluid, 4... Cutting blade, 5
...First die member, 6...Second die member, 7...Cutting ring, 7a...Blade head, 7b...Blade tip, 21...Part to be formed, 22...Cut piece, 23...Molded product, 24...Small amount Gap, 40... Holding member, 42... Gap between the cutting ring and the mold.
Claims (1)
型と該成形用型の外周に所定間隔を保つて設けら
れた前記ガラス素材の余剰部分を切断する切断部
材とを有する光学素子の成形装置において、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
断部材と前記成形用型との間隙に前記刃頭部内周
における空隙を所定量に保つ保持部材を前記成形
装置の基体に保持した状態で挿着したことを特徴
とする光学素子の成形装置。1. An optical element molding apparatus comprising a mold for press-molding a molten glass material, and a cutting member provided at a predetermined interval on the outer periphery of the mold for cutting an excess portion of the glass material. A predetermined gap between the molding die and the cutting member on the inner periphery of the blade head of the cutting member is a slight gap, and a gap between the cutting member and the molding die on the inner periphery of the blade head is a predetermined amount. A molding device for an optical element, characterized in that a holding member for holding the molding device is inserted into the base body of the molding device in a held state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3540288A JPH01212239A (en) | 1988-02-19 | 1988-02-19 | Device for molding optical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3540288A JPH01212239A (en) | 1988-02-19 | 1988-02-19 | Device for molding optical element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01212239A JPH01212239A (en) | 1989-08-25 |
| JPH0445460B2 true JPH0445460B2 (en) | 1992-07-24 |
Family
ID=12440915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3540288A Granted JPH01212239A (en) | 1988-02-19 | 1988-02-19 | Device for molding optical element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01212239A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5275637A (en) * | 1990-01-31 | 1994-01-04 | Canon Kabushiki Kaisha | Method of manufacturing a glass optical part |
| US5322541A (en) * | 1991-03-28 | 1994-06-21 | Matsushita Electric Industrial Co., Ltd. | Method of producing glass blank |
-
1988
- 1988-02-19 JP JP3540288A patent/JPH01212239A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01212239A (en) | 1989-08-25 |
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