JPH01242427A - Device for molding optical element - Google Patents
Device for molding optical elementInfo
- Publication number
- JPH01242427A JPH01242427A JP7076588A JP7076588A JPH01242427A JP H01242427 A JPH01242427 A JP H01242427A JP 7076588 A JP7076588 A JP 7076588A JP 7076588 A JP7076588 A JP 7076588A JP H01242427 A JPH01242427 A JP H01242427A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- optical element
- molding
- rod
- pressing force
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 59
- 230000003287 optical effect Effects 0.000 title claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 abstract description 16
- 239000011810 insulating material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004575 stone Substances 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
- C03B11/16—Gearing or controlling mechanisms specially adapted for glass presses
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ガラス等の光学素材を加熱軟化させつつ成形
型により加圧成形する光学素子の成形装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a molding apparatus for optical elements that pressure-molds an optical material such as glass using a mold while heating and softening the material.
光学素材を加熱軟化させつつ一対の金型により加圧して
光学素子を成形する際に、光学素材に一定の圧力を加え
つつ行われている。加圧中に加圧力が変化すると、光学
素材の伸び、冷却状態が変動し、光学素子にアス、クセ
等が発生するとともに光学素子のレンズ面の曲率、肉厚
に誤差が生ずるおそれがあり、また、加圧成形毎に加圧
力が変動すると光学素子毎に曲率、肉厚が変化するおそ
れがあるからである。When molding an optical element by heating and softening the optical material and applying pressure using a pair of molds, the process is performed while applying a constant pressure to the optical material. If the pressurizing force changes during pressurization, the elongation of the optical material and the cooling state will change, causing spots and curls in the optical element, as well as errors in the curvature and thickness of the lens surface of the optical element. Further, if the pressure force changes each time the pressure molding is performed, the curvature and wall thickness of each optical element may change.
従来、一定の圧力に制御して光学素子を成形する装置と
しては、例えば特開昭６２−１１９１２９号公報、特開
昭６２−１６７２２７号公報に開示された成形装置が知
られている。Conventionally, as an apparatus for molding an optical element by controlling a constant pressure, for example, molding apparatuses disclosed in JP-A-62-119129 and JP-A-62-167227 are known.
特開昭６２−１１９１２９号公報の装置は、基台に立設
した支柱の上端に固定された固定板に摺動自在に嵌合さ
れたガイドとバネにより支持された上型と、支柱に摺動
自在に取付けたスライド板にモータを駆動手段として上
記上型と対向配置して固定された下型と、固定板とスラ
イド仮にそれぞれ取付けられ嵌合しつつ摺動可能な成形
室密閉用の内カバーと外カバーとを備え、モー久の回転
により下型を上昇させて上型を押圧してバネを圧縮し、
上下型間に配設した゛光学素材にバネの圧縮量に応じた
圧力を加えつつ光学素子を成形するもので、かかる圧力
の制御は加圧力を駆動手段の駆動軸に設けたロードセル
により検知し、モータの回転を制御することによりバネ
の圧縮量を調節して行われている。The device disclosed in Japanese Patent Application Laid-open No. 62-119129 consists of an upper die supported by a guide and a spring that is slidably fitted to a fixed plate fixed to the upper end of a column erected on a base, and an upper mold that slides on the column. A lower mold is fixed to a movably mounted slide plate facing the upper mold using a motor as a driving means, and an inner molding chamber sealing member is attached to the fixed plate and slides while being fitted together. It is equipped with a cover and an outer cover, and when the mokyu rotates, the lower mold is raised and the upper mold is pressed to compress the spring.
Optical elements are molded while applying pressure according to the amount of compression of the spring to the optical material placed between the upper and lower molds, and this pressure is controlled by detecting the applied force with a load cell installed on the drive shaft of the drive means. This is done by adjusting the amount of compression of the spring by controlling the rotation of the motor.
特開昭６２−１６７２２７号公報の装置は、上型と、基
台にポールリテーナを介して摺動自在に支持された保持
軸に固定され上型に対向配置された下型と、保持軸をガ
イドを介して進退動させるモータと、保持軸とモータ間
に配置された流体シリンダとを備え、モータの回転によ
り下型を上昇させて上型とにより光学素材に圧力を加え
て光学素子を成形するもので、かかる成形に際して、流
体シリンダの圧力制御により光学素材に加える圧力を一
定に保持しつつ光学素材の成形を行うものである。The device disclosed in Japanese Patent Application Laid-Open No. 62-167227 consists of an upper mold, a lower mold fixed to a holding shaft which is slidably supported on a base via a pole retainer and arranged opposite to the upper mold, and a holding shaft. Equipped with a motor that moves forward and backward via a guide, and a fluid cylinder placed between the holding shaft and the motor, the lower mold is raised by the rotation of the motor, and the optical element is molded by applying pressure to the optical material with the upper mold. During such molding, the optical material is molded while keeping the pressure applied to the optical material constant by controlling the pressure of the fluid cylinder.
上記特開昭６２−１１９１２９号公報の装置は、固定板
とガイド、内カバーと外カバーおよびスライド板と支柱
間の摺動抵抗がロードセルに検知され加圧力の精度に誤
差を生じる問題点があった。The device disclosed in JP-A No. 62-119129 has a problem in that the sliding resistance between the fixed plate and the guide, the inner cover and the outer cover, and the slide plate and the column is detected by the load cell, which causes an error in the accuracy of the pressurizing force. Ta.
さらに、ロードセルによる加圧力測定は常温にあっては
可能であるが、光学素材の加圧時にあっては温度が上界
するため測定精度が低下する問題点があった。Further, although pressure measurement using a load cell is possible at room temperature, there is a problem in that measurement accuracy decreases when the optical material is pressurized because the temperature reaches an upper limit.
また、特開昭６１−１６７２２７号公報の装置にあって
も、ボールリテーナと保持軸およびガイド間の摺動抵抗
により加圧力の精度に誤差を生じる問題点があった。Furthermore, the device disclosed in Japanese Patent Application Laid-Open No. 61-167227 also has the problem of causing errors in the accuracy of the pressing force due to sliding resistance between the ball retainer, the holding shaft, and the guide.
したがって、上記従来の装置にあっては、光学素材に対
する加圧力を正確に設定制御するのは困難で、加圧力の
再現性に問題があった。Therefore, in the conventional apparatus described above, it is difficult to accurately set and control the pressure applied to the optical material, and there is a problem in the reproducibility of the pressure applied.
そこで、本発明は、上記問題点に鑑みなされたものであ
って、成形中の圧力設定を正確に行なえ、かつ再現性良
く光学素子の成形を行なうことのできる光学素子の成形
装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an optical element molding apparatus that can accurately set pressure during molding and mold optical elements with good reproducibility. With the goal.
（課題を解決するための手段）
上記目的を達成するために、本発明に係る光学素子の成
形装置は、第１図に示すように、上下動自在に支持され
た成形型によりガラス素材２を加熱軟化させつつ光学素
材を押圧成形する光学素子の成形装置３において、上記
成形型１に加圧力を付与すべく上記成形型１と対向配置
された荷重受は棒４と、上記荷重受は棒４を支持するダ
イヤフラム５と、上記荷重受は棒４に取付けた荷重６と
より構成されている。(Means for Solving the Problems) In order to achieve the above object, an optical element molding apparatus according to the present invention, as shown in FIG. In an optical element molding apparatus 3 for press-molding an optical material while softening it by heating, a load receiver disposed opposite the mold 1 to apply pressure to the mold 1 is a rod 4; 4 and a load 6 attached to the rod 4.
上記構成の光学素子の成形装置３にあっては、第１図ａ
に示すように、成形室上壁７に受は皿８を介゛して支持
された荷重受は棒４に成形型１が上昇して接触し、さら
に成形型１が上昇して第１図すの状態となると、成形型
１の上型９に荷重受は捧４、荷重６および受は皿８の重
量合計骨が加圧力として作用し、上型９と下型１０間に
保持した光学素材２を加圧して光学素子を押圧成形する
。In the optical element molding apparatus 3 having the above configuration, FIG.
As shown in FIG. 1, the load receiver supported on the upper wall 7 of the molding chamber via the plate 8 comes into contact with the rod 4 as the mold 1 rises, and the mold 1 further rises until it comes into contact with the rod 4. In this state, the total weight of the load receiver 4, the load 6, and the receiver plate 8 acts on the upper die 9 of the mold 1 as a pressing force, and the optical fiber held between the upper die 9 and the lower die 10 acts as a pressing force. The material 2 is pressurized to form an optical element.
かかる加圧に際して、荷重受は捧４の押し上げ量はわず
かであるので、ダイヤフラム５の変形によって生ずる弾
性力により上型９に加わる加圧力は極わずかであるので
無視することができる。When this pressure is applied, the amount of push-up of the load receiver 4 is small, so the pressing force applied to the upper die 9 due to the elastic force generated by the deformation of the diaphragm 5 is extremely small and can be ignored.
以下、図面を用いて本発明の実施例を詳細に説明する。 Embodiments of the present invention will be described in detail below with reference to the drawings.
（第１実施例）
第２図は、本発明に係る光学素子の成形装置の第１実施
例を示す断面図である。(First Embodiment) FIG. 2 is a sectional view showing a first embodiment of an optical element molding apparatus according to the present invention.
図において２０で示すのは成形室で支柱２１により保持
されている。成形室２０内部には、成形室２０の土壁２
０ａ下面に断熱板２Ｉが固定され、断熱板２１はその中
心部に土壁２０ａに開口した穴２３と対応した穴が穿設
されている。断熱板２１の外周には円筒状のヒータ２４
は、その外周に断熱材２６が周設され、この断熱材２６
を介在して保持筒２５に保持されている。またヒータ２
４の内部は光学素子を加圧成形する成形型セント２８を
挿出入し得るように形成されるとともに、ヒータ２４の
上部には、成形型セントの上動を規制するストンバ２９
が設けられている。In the drawing, 20 indicates the molding chamber, which is held by supports 21. Inside the molding chamber 20, there is a clay wall 2 of the molding chamber 20.
A heat insulating board 2I is fixed to the lower surface of 0a, and a hole corresponding to the hole 23 opened in the earthen wall 20a is bored in the center of the heat insulating board 21. A cylindrical heater 24 is provided on the outer periphery of the heat insulating plate 21.
is provided with a heat insulating material 26 around its outer periphery, and this heat insulating material 26
It is held in the holding cylinder 25 with the holder interposed therebetween. Also heater 2
The inside of the heater 24 is formed so that a mold center 28 for press-molding an optical element can be inserted into and removed from the heater 24, and a stone bar 29 is provided above the heater 24 to restrict the upward movement of the mold center.
is provided.
上記穴２３には、成形型セット２８に加圧力を作用させ
る荷重受は棒３０が配置され、成形室２０の上壁２０ａ
とストッパ３１間に固定されたダイヤフラム３２と断熱
板２１とストッパ２９間に固定されたダイヤフラム３３
のそれぞれの中心部に支持されている。A rod 30 is disposed in the hole 23 as a load receiver for applying pressure to the mold set 28, and the upper wall 20a of the molding chamber 20
and a diaphragm 33 fixed between the heat insulating plate 21 and the stopper 29.
is supported at the center of each.
荷重受は捧３０の上部には受は皿３４が取付けられ、受
は皿３４の上面に荷重３５が載置されている。この荷重
受は棒３０は、不作用時に受は皿３４とストッパ３１と
が当接保持され、ダイヤフラム３２．３３に過度の力を
作用させないようになっている。A plate 34 is attached to the upper part of the load plate 30, and a load 35 is placed on the upper surface of the plate 34. When the load receiver bar 30 is not in operation, the plate 34 and the stopper 31 are held in contact with each other, so as not to apply excessive force to the diaphragms 32 and 33.
光学素子を加圧成形する成形型セット２日は、第３図に
示すように、円筒形のスリーブ３６と、スリーブ３６の
中空部３６ａに上型３７と下型３８が対向して摺動自在
に配置され、成形に際して上型３７と下型３８間にプリ
フォーム３９を配置し光学素子を加圧成形し得るように
なっている。As shown in FIG. 3, the mold set 2 for pressure molding the optical element includes a cylindrical sleeve 36, and an upper mold 37 and a lower mold 38 that face each other in a hollow part 36a of the sleeve 36 and can freely slide. During molding, a preform 39 is placed between an upper mold 37 and a lower mold 38 so that an optical element can be pressure molded.
４０は、成形型セット２８を成形室２０内で軸４１を介
して上下に移動させる駆動部で、成形室２０の下面２０
ｂに取付けられている。軸４１の上部には断熱材４３が
固定され、断熱材４３の上面中央にはスリーブ３６の中
空部３６ａと嵌合する突起４４が形成され、断熱材４３
上に成形型セント２８を載置し得るように形成されてい
る。さらに、軸４１のストロークは、下降時に断熱材４
３の下面と成形室２０の下面２０ｂに設けた台４６と当
接し、上昇時にスリーブ２８の上面がヒータ２４上部に
設けたストッパ２９と当接する範囲に設定されている。40 is a drive unit that moves the mold set 28 up and down within the molding chamber 20 via a shaft 41;
It is attached to b. A heat insulating material 43 is fixed to the upper part of the shaft 41, and a protrusion 44 that fits into the hollow part 36a of the sleeve 36 is formed at the center of the upper surface of the heat insulating material 43.
It is formed so that a mold cent 28 can be placed thereon. Furthermore, the stroke of the shaft 41 is such that the heat insulating material 4
The lower surface of the sleeve 28 contacts a stand 46 provided on the lower surface 20b of the molding chamber 20, and the upper surface of the sleeve 28 contacts a stopper 29 provided above the heater 24 when raised.
なお、図中４８で示すのは成形室に対して成形型セット
２８を搬出入するための開口部で、開口部４８はドア４
９により開放、閉塞されるように構成されている。５０
．５１は成形室２０内の雰囲気を不活性ガス雰囲気に置
換するためのパイプで、パイプ５０は真空ポンプ（図示
省略）に接続され、パイプ５１は不活性ガスボンベ（図
示省略）に接続されている。Note that 48 in the figure is an opening for carrying the mold set 28 into and out of the molding room, and the opening 48 is connected to the door 4.
It is configured to be opened and closed by 9. 50
．． A pipe 51 is used to replace the atmosphere in the molding chamber 20 with an inert gas atmosphere. The pipe 50 is connected to a vacuum pump (not shown), and the pipe 51 is connected to an inert gas cylinder (not shown).
次に、上記構成からなる本実施例の光学素子の成形装置
の動作について説明する。Next, the operation of the optical element molding apparatus of this embodiment having the above configuration will be explained.
まず、スリーブ３６の中空部３６ａ内に下型３８、プリ
フォーム３９．上型３７を順次落し込んで成形型セット
２８を組み立てるとともに、駆動部４０を作動させて軸
４１を下降させ成形室２０内の成形型セント２８を！３
！置する断熱材４３を台４６と当接する位置まで下降さ
せる。First, a lower mold 38, a preform 39. The upper mold 37 is dropped in order to assemble the mold set 28, and the drive unit 40 is activated to lower the shaft 41 to release the mold center 28 in the molding chamber 20! 3
! The heat insulating material 43 to be placed is lowered to a position where it contacts the stand 46.
次に、成形室２０のドア４９を開放し、開口部４８を介
して成形室２０内に成形型セット２８を搬入し、断熱材
４３に形設した突起４４とスリーブ３６の中空部３６ａ
とを嵌合しつつ成形型セント２８を断熱材４３上に載置
する。Next, the door 49 of the molding chamber 20 is opened, the mold set 28 is carried into the molding chamber 20 through the opening 48, and the protrusion 44 formed in the heat insulating material 43 and the hollow part 36a of the sleeve 36 are
The molding die 28 is placed on the heat insulating material 43 while being fitted together.
そして、ドア４９を閉して開口部４８を閉塞し、パイプ
５０を介して真空ポンプにより成形室２゜内の空気を排
気し、次にパイプ５１を介して不活性ガス、例えば窒素
ガスを送気し、成形室２ｏ内を不活性ガス雰囲気にする
。さらに、かかるガス置換作業中にヒータ２４に通電し
、ヒータ２４を加熱しておく。Then, the door 49 is closed to block the opening 48, the air inside the molding chamber 2° is exhausted through the pipe 50 by a vacuum pump, and then an inert gas such as nitrogen gas is sent through the pipe 51. The inside of the molding chamber 2o is made into an inert gas atmosphere. Further, during the gas replacement work, electricity is supplied to the heater 24 to heat the heater 24.
次に、駆動部４０を作動して軸４１を上昇させ、成形型
セット２８の上型３７が荷重受は棒３ｏと当接せずプリ
フォーム３９に荷重が作用してぃない状態で成形型セッ
ト２８をヒータ２４内に挿入し、成形型セント２日を所
定の温度まで加熱しプリフォーム３９を所要の粘度まで
軟化する。Next, the drive unit 40 is activated to raise the shaft 41, and the upper mold 37 of the mold set 28 is moved into the mold with the load receiver not in contact with the rod 3o and no load acting on the preform 39. The set 28 is inserted into the heater 24, and the mold 2 is heated to a predetermined temperature to soften the preform 39 to a desired viscosity.
その後、かかる温度を保持しっつ軸４１を上昇させて上
型３７を荷重受は棒３０に当て付け、さらに軸４１をス
リーブ３６がヒータ２４内のストッパー２９と当接する
まで上昇させる。ががる状態にあって成形型セット２８
は断熱材４３とストッパー２９間に固定されるとともに
、荷重受は棒３０が押し上げられて受は皿３４とストッ
パー３１が離れるので、プリフォーム３９に受は皿３４
、荷重３５等の一定の荷重により一定の圧力が加えられ
、プリフォーム３９は、上型３７と下型３８の各成形面
３７ａ、３８ａにより圧縮されつつ変形し成形面３７ａ
、３８ａの形状が反転される。Thereafter, while maintaining this temperature, the shaft 41 is raised to bring the upper mold 37 into contact with the load bearing rod 30, and the shaft 41 is further raised until the sleeve 36 contacts the stopper 29 in the heater 24. The mold set 28 is in a loose state.
is fixed between the heat insulating material 43 and the stopper 29, and the bar 30 of the load receiver is pushed up and the plate 34 and stopper 31 are separated, so that the plate 34 and the load receiver are fixed to the preform 39.
, a constant pressure is applied by a constant load such as the load 35, and the preform 39 is compressed and deformed by the molding surfaces 37a and 38a of the upper mold 37 and the lower mold 38, and the molding surface 37a
, 38a are inverted.
そして、反転が完予した時点で、ヒータ２４の温度を徐
々に下げて素材の流動が止まりプリフォーム３９の形状
が固定するまで徐冷を行なう。次に、この徐冷が終了し
た時点で、軸４１を下降させて断熱材４３と台４６とが
当接する位置まで成形型セット２８を下降する。そして
、ドア４９を開放して成形型セント２８を成形室２０内
より取り出し、成形型セット２８を分解して加圧成形さ
れた光学素子を取り出す。そして上記動作を繰り返して
順次光学素子を成形する。When the inversion is complete, the temperature of the heater 24 is gradually lowered to perform slow cooling until the flow of the material stops and the shape of the preform 39 is fixed. Next, when this slow cooling is completed, the shaft 41 is lowered to lower the mold set 28 to a position where the heat insulating material 43 and the stand 46 come into contact. Then, the door 49 is opened, the mold set 28 is taken out from the molding chamber 20, the mold set 28 is disassembled, and the pressure-molded optical element is taken out. The above operations are then repeated to sequentially mold optical elements.
本実施例によれば、荷重受は棒を介して所定の加圧力を
プリフォームに作用させるので、加熱成形時にあっても
所定の圧力を一定かつ正確に作用し得るとともに、圧力
の再現性を有して光学素子を成形できる。According to this embodiment, the load receiver applies a predetermined pressing force to the preform through the rod, so that the predetermined pressure can be applied constantly and accurately even during hot molding, and the reproducibility of the pressure can be improved. It is possible to mold an optical element using the same.
さらに、荷重受は棒の押し上げ量はわずかであるため、
荷重受は棒を支持するダイヤフラムの弾性力により型に
加わる加圧力は極わずかであるので無視し得るとともに
、このダイヤプラムにより荷重受は棒の可動部分を構成
しであるので、成形室のガス漏れ、往復動に伴って成形
室内にゴミ等が搬入することがなく、高精度の所要形状
を有する光学素子を成形できる。Furthermore, since the load receiver only pushes up the bar by a small amount,
The pressure force applied to the mold by the elastic force of the diaphragm supporting the bar is negligible and can be ignored, and since the load receiver constitutes a movable part of the bar due to the diaphragm, the gas in the molding chamber An optical element having a desired shape with high precision can be molded without leakage or dirt being introduced into the molding chamber due to reciprocating motion.
なお、プリフォームに対する荷重は、上記構成によらず
、エアシリンダ等のアクチュエータを用いて実施でき、
かかる構成にあっても上記と同様な作用、効果を得るこ
とができる。Note that the load on the preform can be applied using an actuator such as an air cylinder, regardless of the above configuration.
Even with such a configuration, the same actions and effects as described above can be obtained.
（第２実施例）
第４図は、本発明に係る光学素子の成形装置の第２実施
例を示す断面図である。(Second Embodiment) FIG. 4 is a sectional view showing a second embodiment of the optical element molding apparatus according to the present invention.
本実施例の光学素子の成形装置は、プリフォームに加圧
力を作用させる荷重部分の構成のみが異なり、その他の
構成は上記第１実施例と同一であるので、同一部分には
同一番号を付して、その説明を省略する。The optical element molding apparatus of this embodiment differs only in the configuration of the load portion that applies pressurizing force to the preform, and the other configurations are the same as in the first embodiment, so the same parts are designated by the same numbers. Therefore, the explanation thereof will be omitted.
すなわち、成形室２０の土壁２０ａの辺部に支持台６０
が固定され、テコ捧６１の一端６１ａがピン６２により
支持台６０に回動自在に軸支されるとともに、テコ棒６
１の他端６１ｂには重り６３の！！置部が形成されてい
る。Ｒ置部を有する他端６１ｂの下方には、テコ１６１
を支えるテコ棒ストンバ６４が土壁２０ａに固定されて
いる。That is, a support stand 60 is placed on the side of the clay wall 20a of the molding chamber 20.
is fixed, one end 61a of the lever 61 is rotatably supported on the support base 60 by a pin 62, and the lever 61 is
1 has a weight 63 on the other end 61b! ! A mounting part is formed. A lever 161 is provided below the other end 61b having the R placement part.
A lever rod 64 that supports the earth wall 20a is fixed to the earth wall 20a.
そして、このテコ棒６１の略中央部において、テコ捧６
１とダイヤフラム３２．３３に支持された荷重受は棒３
０の上端部が当接され、成形型セント２８の上昇により
上型３７にテコ棒６１を介して重り６３による圧力を作
用し得るように構成されている。なお、荷重受は棒３０
と成形型セット２８とが当接していない場合には、テコ
棒６１はテコ棒ストッパ６４に支えられ、荷重受は棒３
０を支持するダイヤフラム３２，３３に過度の荷重が作
用しないように構成されている。Then, at approximately the center of this lever bar 61, the lever bar 61
1 and the load receiver supported by diaphragms 32 and 33 is rod 3
The upper end of the mold 37 is brought into contact with the upper end of the mold 28, and pressure by the weight 63 can be applied to the upper mold 37 via the lever rod 61 when the mold center 28 is raised. In addition, the load receiver is rod 30.
When the mold set 28 is not in contact with the lever bar 61, the lever bar 61 is supported by the lever bar stopper 64, and the load receiver is held by the bar 3.
The structure is such that an excessive load is not applied to the diaphragms 32 and 33 that support 0.
上記構成の光学素子の成形装置の動作については、上記
第１実施例と同様であるので、その説明を省略する。The operation of the optical element molding apparatus having the above configuration is the same as that of the first embodiment, so the explanation thereof will be omitted.
本実施例によれば、テコの原理を応用しているので、プ
リフォームへの押圧力が拡大され、軽い重りにより大き
な押圧力を得ることができるとともに、上記第１実施例
と同様な作用、効果を奏することができる。なお、本実
施例にあっても、重りに換えてエアシリンダ等のアクチ
ュエータを用いてプリフォームに圧力を加えることがで
き、上記作用、効果と同様な作用、効果を得つつ実施で
きる。According to this embodiment, since the lever principle is applied, the pressing force on the preform is expanded, and a large pressing force can be obtained with a light weight, and the same effect as in the first embodiment is achieved. It can be effective. Also in this embodiment, pressure can be applied to the preform using an actuator such as an air cylinder instead of the weight, and the same operations and effects as those described above can be obtained.
〔発明の効果］
本発明の光学素子の成形装置によれば、重りにより加圧
力を設定しつつ成形できるので、精度が高く、かつ再現
性を有する。さらに、成形室内の気密性を加圧成形時に
あっても保持でき、ゴミ等の搬入を防止できるとともに
安定した加圧力を加えることができる。また、加圧力の
設定、制御が熱による影響を受けずに行うことができる
。[Effects of the Invention] According to the optical element molding apparatus of the present invention, molding can be performed while setting the pressing force using the weight, so the precision is high and the reproducibility is achieved. Furthermore, the airtightness within the molding chamber can be maintained even during pressure molding, making it possible to prevent dirt and the like from being carried in and to apply a stable pressing force. Further, the setting and control of the pressurizing force can be performed without being affected by heat.
したがって、高精度で、同一品質の光学素子を再現性良
く成形することができる。Therefore, optical elements of the same quality can be molded with high precision and good reproducibility.
第１図は本発明に係る光学素子の成形装置の要部を示し
、第１図ａは加圧前の状態を示す断面図、第１図すは加
圧時の状態を示す断面図、第２図は本発明に係る光学素
子の成形装置の第１実施例を示す断面図、第３図は成形
型セットの斜視図、第４図は本発明に係る光学素子の成
形装置の第２実施例を示す断面図である。
１・・・成形型
２・・・光学素材
３・・・光学素子の成形装置
４・・・荷重受は棒
５・・・ダイヤフラム
６・・・荷重
特許出願人 オリンパス光学工業株式会社代理人 弁
理士 奈 良 武第２図
特許庁長官 小 川 邦 夫 殿
１．事件の表示
昭和６３年 特 許 願 第７０７６５号２、発明の名
称
光学素子の成形装置
３、補正をする者
事件との関係 特許出願人
住 所 東京都渋谷区幡ケ谷２丁目４３番２号名 称
（０３７）オリンパス光学工業株式会社代表者 下
山 敏 部
４、代理人〒１０５
住 所 東京都港区浜松町２丁目２番１５号７、補正の
内容
（１）明細書第２頁第２行目の「伸び」との記載を、「
流動状態」と補正する。
（２）明細書第４頁第４行目の「加圧時Ｊとの記載を、
Ｆ成形時」と補正する。
（３）明細書第１０頁第１７行目の「完予」との記載を
、「完了」と補正する。1 shows the main parts of the optical element molding apparatus according to the present invention, FIG. 1a is a sectional view showing the state before pressurization, FIG. FIG. 2 is a sectional view showing a first embodiment of the optical element molding apparatus according to the present invention, FIG. 3 is a perspective view of a mold set, and FIG. 4 is a second embodiment of the optical element molding apparatus according to the present invention. It is a sectional view showing an example. 1... Molding mold 2... Optical material 3... Optical element molding device 4... Load receiver is rod 5... Diaphragm 6... Load Patent applicant Olympus Optical Industry Co., Ltd. Agent Patent attorney Takeshi Nara Figure 2 Director General of the Patent Office Kunio Ogawa 1. Indication of the case 1986 Patent Application No. 70765 2, Name of the invention Optical element molding device 3, Person making the amendment Relationship to the case Patent applicant address 2-43-2 Hatagaya, Shibuya-ku, Tokyo Name Name
(037) Representative of Olympus Optical Industry Co., Ltd.
Satoshi Yama, Department 4, Agent 105 Address: 2-2-15-7, Hamamatsucho, Minato-ku, Tokyo Contents of amendment (1) Changed the description of “elongation” in the second line of page 2 of the specification to “
``Fluid state''. (2) The description “J when pressurized” on page 4, line 4 of the specification,
Corrected as "F-forming". (3) The statement "Complete" on page 10, line 17 of the specification is amended to "Complete."
Claims (1)
熱軟化させつつ光学素子を押圧成形する光学素子の成形
装置において、上記成形型に加圧力を付与すべく上記成
形型と対向配置された荷重受け棒と、上記荷重受け棒を
支持するダイヤフラムと、上記荷重受け棒に取付けた荷
重とより構成したことを特徴とする光学素子の成形装置
。(1) In an optical element molding device for press-molding an optical element while heating and softening an optical material using a vertically movably supported mold, the mold is placed opposite to the mold to apply pressure to the mold. 1. An optical element molding device comprising: a load receiving rod; a diaphragm supporting the load receiving rod; and a load attached to the load receiving rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7076588A JPH01242427A (en) | 1988-03-24 | 1988-03-24 | Device for molding optical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7076588A JPH01242427A (en) | 1988-03-24 | 1988-03-24 | Device for molding optical element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01242427A true JPH01242427A (en) | 1989-09-27 |
Family
ID=13440934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7076588A Pending JPH01242427A (en) | 1988-03-24 | 1988-03-24 | Device for molding optical element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01242427A (en) |
-
1988
- 1988-03-24 JP JP7076588A patent/JPH01242427A/en active Pending
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