JPH04149035A - Lens forming device - Google Patents
Lens forming deviceInfo
- Publication number
- JPH04149035A JPH04149035A JP26848990A JP26848990A JPH04149035A JP H04149035 A JPH04149035 A JP H04149035A JP 26848990 A JP26848990 A JP 26848990A JP 26848990 A JP26848990 A JP 26848990A JP H04149035 A JPH04149035 A JP H04149035A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- glass material
- optical glass
- heat insulating
- insulating cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 51
- 239000005304 optical glass Substances 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000000465 moulding Methods 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 abstract description 6
- 239000011261 inert gas Substances 0.000 abstract description 4
- 239000011521 glass Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C03B11/12—Cooling, heating, or insulating the plunger, the mould, or the glass-pressing machine; cooling or heating of the glass in the mould
- C03B11/122—Heating
-
- 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
- C03B2215/72—Barrel presses or equivalent, e.g. of the ring mould type
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、光学ガラス素材をプレス手段によってレンズ
を成形するレンズ成形装置に関し、特にこの成形時に光
学ガラス素材を均一に加熱することができるようにした
レンズ成形装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lens molding device that molds an optical glass material into a lens by pressing means, and in particular, a lens molding device that is capable of uniformly heating the optical glass material during this molding. This invention relates to a lens molding device.
［従来の技術１
近年においては、光学ガラスレンズは、従来の研削、研
磨による加工を行う方式のほかに、溶融した光学ガラス
を成形型によって、直接プレス成形する方式や、予め最
終形状に近似した形状にプリフォームした光学ガラス素
材を成形型内で軟化させてプレス成形する方式が用いら
れるようになってきている。これら各方式のうち、省力
生産。[Conventional technology 1] In recent years, optical glass lenses have been produced by not only the conventional methods of grinding and polishing, but also methods of directly press-forming molten optical glass using a mold, and methods of forming optical glass lenses in advance to approximate the final shape. A method in which a preformed optical glass material is softened in a mold and then press-molded has come into use. Among these methods, labor-saving production.
自動化等の観点からは、プレス成形方式が有利であり、
特に、プリフォームした光学ガラス素材を用いてプレス
成形する方式は、処理が簡単である等の観点から今後最
も有望視されている。From the point of view of automation, press forming method is advantageous,
In particular, a method of press molding using a preformed optical glass material is considered to be the most promising in the future from the viewpoint of ease of processing.
ここで、プレス方式によってプリフォームガラス素材か
らのレンズの成形を行うには、通常、このガラス素材を
成形型に装填した状態で、雰囲気置換、加熱、プレス、
冷却の各工程を経させることが必要である。In order to mold a lens from a preform glass material using the press method, the glass material is usually loaded into a mold, and then the glass material is replaced with an atmosphere, heated, pressed, etc.
It is necessary to pass through each step of cooling.
雰囲気置換は、プリフォーム型の成形面表面に酸化被膜
が析出するのを防止するために、少なくとも型の成形面
上及びその近くを例えば窒素ガス等からなる不活性ガス
雰囲気に置換させるものである。このようにして雰囲気
置換した成形型を加熱チャンバ内で、その全体を加熱し
てこの型内に装填されたガラス素材を均一な状態に軟化
させる。然る後に、成形型に加圧力を加えてプレスする
ことによって、そのガラス素材を成形加工して、成形品
を冷却して型から取り出される。Atmosphere replacement is to replace at least the molding surface of the mold and its vicinity with an inert gas atmosphere consisting of, for example, nitrogen gas, in order to prevent the precipitation of an oxide film on the molding surface of the preform mold. . The entire mold, whose atmosphere has been replaced in this way, is heated in a heating chamber to uniformly soften the glass material loaded into the mold. Thereafter, the glass material is molded by applying pressure to the mold and pressing, and the molded product is cooled and removed from the mold.
成形型としては、通常、固定の下型と、該下型に近接・
離間する方向に昇降変位可能な上型と、この上型の昇降
動作をガイドする胴型とから構成され、下型と上型との
間にガラス素材が装填される成形部が区画形成される。The mold usually includes a fixed lower mold and a mold that is close to the lower mold.
It is composed of an upper mold that can be moved up and down in the direction of separation, and a body mold that guides the raising and lowering movement of the upper mold, and a molding section into which a glass material is loaded is formed between the lower mold and the upper mold. .
この成形型は搬送用プレート上に設置されて、前述した
各工程に順次搬送されるようになっている。また、この
搬送用プレートとしては、加熱チャンバ内において設置
されたヒータからの熱を型に伝導してガラス素材を効率
的に加熱するために、熱伝導性の極めて良好な版材で形
成されている。This mold is placed on a conveyance plate and is conveyed sequentially to each of the above-mentioned steps. In addition, this transport plate is made of a plate material with extremely good thermal conductivity in order to efficiently heat the glass material by conducting the heat from the heater installed in the heating chamber to the mold. There is.
［発明か解決しようとする課題］
前述したプリフォームガラス素材を用いて成形を行うに
当って、最も重要な条件のひとつとしては、ガラス累月
の全体か均一な状態に加熱されることである。このため
に、単にガラス素材だけでな（、成形型全体を加熱して
、成形型及びガラス素材が共に同じ温度状態となるよう
にしている。[Problem to be solved by the invention] When performing molding using the preform glass material mentioned above, one of the most important conditions is that the entire glass plate be heated to a uniform state. . For this purpose, not only the glass material (but also the entire mold) is heated so that both the mold and the glass material are at the same temperature.
従って、ガラス素材の成形型としては、−鍜に、熱伝導
率の高い部祠、例えば炭化タングステン等が好適に用い
られる。Therefore, as a mold made of glass material, a material having high thermal conductivity, such as tungsten carbide, is preferably used for the head.
ところで、前述したガラス素材の加熱を行うための加熱
チャンバはある程度の空間を有するものであり、この空
間内においては、たとえどのように多くのヒータを配設
したとしても、チャンバ全体を均一な温度状態に保持す
るのは困難であり、このチャンバ内に熱の偏在が生じる
。成形型はこの加熱チャンバ内に露出した状態となって
いるので、このチャンバ内における熱の偏在の影響で、
成形型には部分的な温度差が生じることになる。By the way, the heating chamber for heating the glass material mentioned above has a certain amount of space, and no matter how many heaters are installed within this space, the entire chamber cannot be kept at a uniform temperature. This is difficult to maintain and causes uneven distribution of heat within this chamber. Since the mold is exposed in this heating chamber, due to the uneven distribution of heat in this chamber,
Local temperature differences will occur in the mold.
そして、このような温度差が生じると、ガラス素材の不
均一加熱の原因となり、成形時に歪等が生じて品質の低
下を来す等の欠点がある。When such a temperature difference occurs, it causes non-uniform heating of the glass material, which causes distortion during molding, resulting in a deterioration in quality.
本発明は斜上の点に鑑みてなされたものであって、その
目的とするところは、ガラス素材全体を極めて均一な状
態に加熱することができるようにしたレンズ成形装置を
提供することにある。The present invention has been made in view of the above-mentioned problem, and its purpose is to provide a lens forming apparatus that can heat the entire glass material in an extremely uniform state. .
［課題を解決するための手段１
前述した目的を達成するために、本発明は、成形型の搬
送ブしノート上に、成形型における胴型に対して所定の
間隙をもって囲繞する断熱筒を配置する構成としたこと
をその特徴とするものである。[Means for Solving the Problems 1] In order to achieve the above-mentioned object, the present invention arranges a heat insulating tube that surrounds the body of the mold with a predetermined gap on the conveyor belt of the mold. Its feature is that it has a structure that allows
（作用１
このように構成することによって、断熱筒の内部は加熱
チャンバ内において極めて小さな小室を区画形成される
ことになる。従って、この小室の内部に位置する成形型
、特にそのうちのガラス素材が装填されている部位の温
度分布はほぼ均一な状態となる。この結果、このガラス
素材はその全体が均一に加熱されることになり、成形精
度を著しく向上させることができる。(Effect 1 With this configuration, the inside of the heat insulating tube is divided into extremely small chambers within the heating chamber. Therefore, the mold located inside this chamber, especially the glass material of the mold, is The temperature distribution in the loaded area becomes almost uniform.As a result, the entire glass material is heated uniformly, and the molding accuracy can be significantly improved.
そして、断熱筒内に形成される小室の温度をさらに均一
化し、しかもより効率的に加熱するには、成形型の移動
に支障を来たさない範囲で、上型に可及的に近接した位
置に配置するようにすればよい。In order to further equalize the temperature of the small chamber formed inside the heat insulating cylinder and to heat it more efficiently, it is necessary to move the chamber as close as possible to the upper mold without interfering with the movement of the mold. All you have to do is place it in the correct position.
［実施例１
以下、本発明の実施例を図面に基づいて詳細に説明する
。[Embodiment 1] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
まず、第３図にレンズ成形装置全体の概略構成を示す。First, FIG. 3 shows a schematic configuration of the entire lens molding apparatus.
図中において、１はワークセット部、２は雰囲気置換部
、３は加熱部、４はプレス部、５は冷却部、６は製品取
り出し部をそれぞれ示す。In the figure, 1 is a work setting section, 2 is an atmosphere replacement section, 3 is a heating section, 4 is a press section, 5 is a cooling section, and 6 is a product take-out section.
プリフォームされた光学ガラス素材１０は、第１図及び
第２図に示したレンズ成形ユニットに装填されるように
なっている。このレンズ成形ユニットは、方形板材から
なる搬送プレート１）と、該搬送プレート１）上に設置
した成形型１２とから構成されている。ここで、搬送プ
レート１）は、加熱部３及びプレス部４に設置されてい
るヒータ（図示せず）からの熱を効率的に成形型１２に
伝達することができるようにするために、熱伝導率の高
い部材で形成されている。この搬送プレート１）を適宜
の搬送方式、例えば無端搬送路に沿って搬送させたり、
または駒送りする等によってワークセット部１から順次
各部を経て製品取り出し部６にまで搬送されるようにな
っている。The preformed optical glass material 10 is loaded into a lens molding unit shown in FIGS. 1 and 2. This lens molding unit is composed of a conveyor plate 1) made of a rectangular plate, and a mold 12 installed on the conveyor plate 1). Here, the conveyor plate 1) is configured to provide heat so that heat from heaters (not shown) installed in the heating section 3 and the press section 4 can be efficiently transferred to the mold 12. It is made of a material with high conductivity. This conveyance plate 1) is conveyed by an appropriate conveyance method, for example, along an endless conveyance path,
Alternatively, the work piece is conveyed from the work setting section 1 through each section sequentially to the product take-out section 6 by frame feeding or the like.
成形型１２は、搬送プレート１）に固定的に設置した下
型１２ａと、該下型１２ａに対して近接・離間する方向
に昇降変位可能な上型１．２ｂ及びこの上型１２ｂをガ
イドする胴型１２ｃとからなり、光学ガラス素材ｌＯは
下型１２ａと上型１２ｂとの間に形成される成形部１３
内に装填される。従って、この成形型１２と搬送プレー
ト１）とにより成形型ユニッｊ・が構成される。The mold 12 guides a lower mold 12a that is fixedly installed on the conveyor plate 1), an upper mold 1.2b that can be moved up and down in directions toward and away from the lower mold 12a, and this upper mold 12b. The optical glass material IO has a molding part 13 formed between the lower mold 12a and the upper mold 12b.
loaded inside. Therefore, this mold 12 and the conveyor plate 1) constitute a mold unit j.
而して、レンズ成形を行う時、特にその加熱及びプレス
時に光学ガラス素材の表面に酸化被膜が形成されること
がないようにするために、加熱部３、プレス部４及び冷
却部５内は不活性ガス雰囲気下に置かれている。In order to prevent the formation of an oxide film on the surface of the optical glass material during lens molding, especially during heating and pressing, the inside of the heating section 3, press section 4, and cooling section 5 is placed under an inert gas atmosphere.
光学ガラス素材セット部１において、搬送プレートｌｌ
上に設けた成形型１２の成形部１３内に光学ガラス素材
１０を装填して、まず雰囲気置換部２に送り込み、この
光学ガラス素材ｌＯが装填されている成形部１３がら空
気を排出して、不活性ガス雰囲気と置換させる。次に、
この成形型ユニットを搬送して、加熱部３に送り込んで
、この加熱部３を構成する加熱チャンバ内で光学ガラス
素材１０を所定の温度にまで加熱して、それを軟化させ
る。然る後に、プレス部４に搬送して、該ブしス部４内
で、上型１２ｂを押圧することによって、軟化した光学
ガラス素材１０をプレス成形する。そして、プレス成形
が完了した後には、上型１２ｂを光学ガラス素材１０か
ら離間させて、冷却部５で冷却し、製品取り出し部６に
移行させて、成形品を成形型１２から取り出される。In the optical glass material setting section 1, the transport plate ll
The optical glass material 10 is loaded into the molding part 13 of the mold 12 provided above, and first sent to the atmosphere replacement part 2, and the air is discharged from the molding part 13 loaded with the optical glass material IO. Replace with inert gas atmosphere. next,
This mold unit is transported and fed into the heating section 3, and the optical glass material 10 is heated to a predetermined temperature within a heating chamber constituting the heating section 3 to soften it. Thereafter, the softened optical glass material 10 is transferred to the press section 4 and pressed against the upper die 12b within the press section 4, thereby press-molding the softened optical glass material 10. After the press molding is completed, the upper mold 12b is separated from the optical glass material 10, cooled in the cooling section 5, moved to the product take-out section 6, and the molded product is taken out from the mold 12.
ここで、前述した光学ガラス素材１０の成形を行うに当
って、加熱部３において光学ガラス素材１０を所定の温
度となるように加熱し、しかもこの加熱は光学ガラス素
材１０全体が均一な温度となるように制御することが必
要である。設定湯度より高すぎたり、低すぎたりしても
品質の安定を図ることができず、また、加熱が不均一に
なっていると、形状等に歪が生じて、品質が低下するこ
とになる。Here, when molding the optical glass material 10 described above, the optical glass material 10 is heated in the heating section 3 to a predetermined temperature, and this heating is performed so that the entire optical glass material 10 is at a uniform temperature. It is necessary to control so that If the hot water temperature is too high or too low, it will not be possible to stabilize the quality, and if the heating is uneven, the shape will be distorted and the quality will deteriorate. Become.
そこで、この光学ガラス素材１０の均一加熱を可能なら
しめるために、搬送プレート１）には、胴型１２ｃの外
側に、この胴型１２ｃを囲繞するように断熱筒１４が設
けられている。この断熱筒１４は、ステンレスやセラミ
ックス等のように断熱性の良好な部材から構成されてお
り、該断熱筒１４は胴型１２ｃに対して例えば１ｍｍ以
下というように、極く僅かな間隙１５を置いて配置され
ている。そして、この間隙１５を全体にわたって均一な
状態に保持し、断熱筒１４と胴型１２ｃとが接触しない
ようにするために、断熱筒１４の下端部には内向きの段
部１４ａが形成されて、該段部１４ａを胴型１２ｃの外
面に密嵌させることによって、この断熱筒１４と胴型１
２ｃとの間の調芯な行うようにしている。これによって
、成形型１２は極めて小さな小室内に配置された状態ど
なっている。Therefore, in order to enable uniform heating of the optical glass material 10, a heat insulating cylinder 14 is provided on the outer side of the barrel mold 12c so as to surround the barrel mold 12c. The heat insulating cylinder 14 is made of a material with good heat insulation properties such as stainless steel or ceramics, and the heat insulating cylinder 14 has an extremely small gap 15 of, for example, 1 mm or less, with respect to the body 12c. It is placed and placed. In order to keep this gap 15 uniform throughout and to prevent contact between the heat insulating cylinder 14 and the body mold 12c, an inward step 14a is formed at the lower end of the heat insulating cylinder 14. By closely fitting the stepped portion 14a to the outer surface of the body mold 12c, the heat insulating cylinder 14 and the body mold 1
I try to do alignment between the two. As a result, the mold 12 is placed in an extremely small chamber.
従って、比較的広い加熱部３のチャンバ内において、た
とえこのチャンバの内部に温度の偏在があるとしても、
断熱筒１４によって区画形成されて、内部に成形型１２
が収容されている小室は、断熱筒１４及びこの断熱筒１
４と胴型１２ｃとの間に介在する気体によって熱が外部
に放散するのが防止されることになって、この小室の均
一な温度状態に保たれることになり、光学ガラス素材１
０はその全体が均一に加熱されることになり、それをプ
レスしてレンズを成形したときに、このレンズに歪等が
発生することはない。Therefore, even if the temperature is unevenly distributed within the relatively wide chamber of the heating section 3,
It is partitioned by a heat insulating cylinder 14 and has a mold 12 inside.
The small chamber in which the heat insulating cylinder 14 and this insulating cylinder 1 are housed
The gas interposed between the optical glass material 1 and the body mold 12c prevents heat from dissipating to the outside, thereby maintaining a uniform temperature state in this small chamber.
0 means that the entire surface is heated uniformly, and when a lens is formed by pressing it, no distortion or the like occurs in the lens.
さらに、前述した加熱部３においては、上部ヒータ１６
が設けられている。この上部ヒータ１６は成形型１２が
通過する際に干渉しない範囲で上型１２ｂに可及的に近
接する位置、例えば上型１２ｂの上面より約１．ｍｍ乃
至それ以下の間隔を置いた上方位置に配設することかで
きるように、昇降自在に設けられている。Furthermore, in the heating section 3 described above, the upper heater 16
is provided. The upper heater 16 is located at a position as close as possible to the upper mold 12b without interfering with the mold 12 when it passes, for example, about 1 inch from the upper surface of the upper mold 12b. It is provided so that it can be raised and lowered so that it can be placed at an upper position with an interval of mm or less.
従って、成形型１２が直接接触している搬送プレート１
）によって、この成形型１２を下方から加熱し、また上
部ヒータ１６によって該成形型１２の上方の直近位置か
ら成形型１２を加熱することができるようになり、しか
もこれら上下の熱源からの熱は、その間に設けられてい
る断熱筒１４の外に逃げることがないので、光学ガラス
素材１０を極めて効率的に、しかもその全体を均一に加
熱することができて、さらにレンズ成形品の品質の向上
を図ることができるようになる。Therefore, the conveying plate 1 with which the mold 12 is in direct contact
), the mold 12 can be heated from below, and the upper heater 16 can heat the mold 12 from a position immediately above the mold 12, and the heat from these upper and lower heat sources is Since there is no escape to the outside of the heat insulating cylinder 14 provided between them, the optical glass material 10 can be heated extremely efficiently and uniformly over its entirety, further improving the quality of the lens molded product. You will be able to aim for
［発明の効果１
以上説明したように、本発明は、成形型の胴型の外側に
、この胴型に対して所定の間隙をもって囲繞する断熱筒
を設ける構成としたので、成形型の配設部を外部から熱
的に遮断された極（小さな小室とすることができ、ガラ
ス素材の全体を極めて均一な状態に加熱することができ
るようになる。[Advantageous Effects of the Invention 1] As explained above, the present invention has a structure in which a heat insulating cylinder is provided outside the body of the mold, surrounding the body with a predetermined gap, so that the arrangement of the mold is easy. The area can be made into a pole (small chamber) that is thermally isolated from the outside, making it possible to heat the entire glass material in an extremely uniform state.
図面は本発明の一実施例を示すものであって、第１図は
レンズ成形ユニットの全体構成を示す外観図、第２図は
第１図の断面図、第３図はレンズ成形装置の概略構成を
示す説明図である。
１；光学ガラス素材セット部、２：雰囲気置換部、３：
加熱部、４ニブレス部、５：冷却部、６：製品取り出し
部、１０：光学ガラス素材、１）：ｔｌｌｉｌ送プレー
ト、１２：成形型、１２ａ：下型、１２ｂ：上型、１２
ｃ：胴型、１３：成形部、１４．断熱筒、１５：間隙、
１６二上部ヒータ。
第
図The drawings show one embodiment of the present invention, in which Fig. 1 is an external view showing the overall configuration of a lens molding unit, Fig. 2 is a sectional view of Fig. 1, and Fig. 3 is a schematic diagram of the lens molding apparatus. FIG. 2 is an explanatory diagram showing the configuration. 1; Optical glass material setting section, 2: Atmosphere replacement section, 3:
Heating section, 4 nibless sections, 5: Cooling section, 6: Product take-out section, 10: Optical glass material, 1): Tllil feeding plate, 12: Molding mold, 12a: Lower mold, 12b: Upper mold, 12
c: body mold, 13: molding part, 14. Insulating tube, 15: gap,
16 Two upper heaters. Diagram
Claims (2)
有する搬送プレート上に設置し、前記上型と下型との間
に装填された光学ガラス素材を加熱軟化させて、加圧し
てレンズ成形を行うものにおいて、前記搬送プレート上
に、前記胴型に対して所定の間隙をもって囲繞する断熱
筒を配置する構成としたことを特徴とするレンズ成形装
置。(1) A mold including an upper mold, a lower mold, and a body mold is placed on a thermally conductive conveying plate, and the optical glass material loaded between the upper mold and the lower mold is heated and softened. . A lens molding apparatus which performs lens molding by applying pressure, characterized in that a heat insulating cylinder is disposed on the conveying plate and surrounds the body mold with a predetermined gap.
僅かに隙間を置いて対面する位置となるように上部ヒー
タを配設する構成としたことを特徴とする請求項（１）
記載のレンズ成形装置。(2) Claim (1) characterized in that the upper heater is disposed in the heating chamber at a position facing the upper die of the mold with a slight gap therebetween.
The lens molding device described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2268489A JP2836230B2 (en) | 1990-10-08 | 1990-10-08 | Lens molding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2268489A JP2836230B2 (en) | 1990-10-08 | 1990-10-08 | Lens molding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04149035A true JPH04149035A (en) | 1992-05-22 |
| JP2836230B2 JP2836230B2 (en) | 1998-12-14 |
Family
ID=17459208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2268489A Expired - Lifetime JP2836230B2 (en) | 1990-10-08 | 1990-10-08 | Lens molding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2836230B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006282439A (en) * | 2005-03-31 | 2006-10-19 | Hoya Corp | Mold press apparatus and method for manufacturing mold press product |
| CN108609838A (en) * | 2018-08-09 | 2018-10-02 | 湖北扬子江光电仪器有限公司 | A kind of optical glass device precise compression molding softening furnace and optical glass device production system |
-
1990
- 1990-10-08 JP JP2268489A patent/JP2836230B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006282439A (en) * | 2005-03-31 | 2006-10-19 | Hoya Corp | Mold press apparatus and method for manufacturing mold press product |
| CN108609838A (en) * | 2018-08-09 | 2018-10-02 | 湖北扬子江光电仪器有限公司 | A kind of optical glass device precise compression molding softening furnace and optical glass device production system |
| CN108609838B (en) * | 2018-08-09 | 2023-11-21 | 湖北扬子江光电仪器有限公司 | Precise profiling softening furnace for optical glass element and optical glass element production system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2836230B2 (en) | 1998-12-14 |
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