JP2002012431A5 - - Google Patents
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- JP2002012431A5 JP2002012431A5 JP2000193459A JP2000193459A JP2002012431A5 JP 2002012431 A5 JP2002012431 A5 JP 2002012431A5 JP 2000193459 A JP2000193459 A JP 2000193459A JP 2000193459 A JP2000193459 A JP 2000193459A JP 2002012431 A5 JP2002012431 A5 JP 2002012431A5
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【特許請求の範囲】
【請求項１】 上下の成形面とその外周側に位置する周面とで囲まれたキャビティを備え、該キャビティ内に配置された被成形素材を、前記上下の成形面を相対的に接近させることによりプレスしてプレス成形体を成形可能とするとともに、該キャビティの外に通じる通気路を有する成形型を用意する工程、
該キャビティ内に配置した軟化状態の該被成形素材を、該上下の成形面を相対的に接近させることにより、該上下の成形面および前記周面により被成形素材をプレスしてプレス成形体を成形する工程、
前記上型の成形面を前記プレス成形体から離す工程、
前記プレス成形体が所定温度になったときに、前記下型の成形面とプレス成形体との接触端部を含む空間に前記通気路から気体を流入させつつ、前記プレス成形体を前記下成形面から取り出す工程、
とを備えたプレス成形体の製造方法。
【請求項２】 前記プレス成形体を取り出す工程は、
前記プレス成形体がＴｇ−５０℃〜Ｔｇ℃の温度範囲のときに開始される請求項１に記載のプレス成形体の製造方法。
【請求項３】 前記軟化状態の被成形素材が、粘性が１０５．５〜１０８ポアズにあるガラスであり、前記成形型が、該ガラスが１０８ポアズから１０１２．５ポアズの粘度に達するに必要な温度に予熱されているときに、前記プレス成形が開始される請求項１又は２に記載のプレス成形体の製造方法。
【請求項４】 前記上下の成形面に離型薄膜が形成されている請求項１〜３の何れかに記載のプレス成形体の製造方法。
【請求項５】 前記通気路から前記空間に流入する気体が、非酸化性の気体である請求項１〜４の何れかに記載のプレス成形体の製造方法。
【請求項６】 前記通気路から前記空間に高圧ガスを流入させる請求項１〜５の何れかに記載のプレス成形体の製造方法。
【請求項７】 前記プレス成形体を取り出す工程は、
吸着パッドの吸着面によって前記成形型のキャビティを閉塞する工程、
前記吸着パッドによる前記キャビティ内の気体の吸引を行い、前記キャビティ内の前記プレス成形体を浮き上がらせ、これによって該プレス成形体を吸着する工程、
前記成形型に対し前記吸着パッドを上方に移動させて、前記成形型から前記プレス成形体を取り出す工程、
とを備えた請求項１〜６の何れかに記載のプレス成形体の製造方法。
【請求項８】 前記プレス成形体の外周面の厚み方向の幅が、１ｍｍ以上である請求項７に記載のプレス成形体の製造方法。
【請求項９】 前記プレス成形体を取り出す工程は、
吸着パッドの吸着面を前記プレス成形体の上面に接触させる工程、
前記吸着パッドによりプレス成形体を吸着する工程、
前記成形型に対し前記吸着パッドを上方に移動させて、前記成形型から前記プレス成形体を取り出す工程、
とを備えた請求項１〜６の何れかに記載のプレス成形体の製造方法。
【請求項１０】 前記プレス成形体の外周面の厚み方向の幅が、０．６ｍｍ以下である請求項９に記載のプレス成形体の製造方法。
【請求項１１】 前記上下の成形面が光学的機能面を形成するものであり、前記プレス成形体がガラス光学素子である請求項１〜１０の何れかに記載のプレス成形体の製造方法。
【請求項１２】 上下の成形面とその外周側に位置する周面とで囲まれたキャビティを備え、該キャビティ内に配置された被成形素材を、前記上下の成形面を相対的に接近させることによりプレスしてプレス成形体を成形可能とするとともに、該キャビティの外に通じる通気路を備えた成形型と、
該キャビティ内に配置した軟化状態の該被成形素材を、該上下の成形面を相対的に接近させることにより、該上下の成形面および前記周面により被成形素材をプレスしてプレス成形体を成形するプレス手段と、
前記上型の成形面を前記プレス成形体から離す分離手段と、
前記下型の成形面とプレス成形体との接触端部を含む空間に前記通気路から気体を流入させつつ、前記プレス成形体を吸着し前記下成形面から取り出すための吸着手段と、
を備えるプレス成形装置。
【請求項１３】 前記プレス成形体が、ガラス光学素子である請求項１２に記載のプレス成形装置。
【請求項１４】 前記通気路から前記空間に流入する気体が、非酸化性の気体である請求項１２又は１３に記載のプレス成形装置。
【請求項１５】 前記成形型は、
前記下成形面、前記周面及び前記通気路を備える下型と、
前記上成形面を備える上型と、
を備えた請求項１２〜１４の何れかに記載のプレス成形装置。
【請求項１６】 前記吸着手段は、
前記プレス成形体を吸着するための吸着面を備える吸着パッドと、
前記吸着パッドを上下方向に移動可能に支承する支持体と、
前記支持体を昇降させる昇降手段と、
を備えた請求項１２〜１５の何れかに記載のプレス成形装置。
【請求項１７】 前記吸着手段における吸着パッドが、前記プレス成形体の径よりも小径の吸着面を有し、これによって前記吸着面を前記キャビティ内の前記プレス成形体の上面に接触するようにした請求項１６に記載のプレス成形装置。
【請求項１８】 前記吸着手段における吸着パッドが、前記成形型のキャビティを閉塞可能な径の吸着面を有し、これによって、前記吸着面によって前記キャビティを閉塞するようにした請求項１６に記載のプレス成形装置。
[Claims]
1. A molding machine comprising: a cavity surrounded by upper and lower molding surfaces and a peripheral surface located on an outer peripheral side thereof, wherein a molding material disposed in the cavity is caused to relatively approach the upper and lower molding surfaces. A step of preparing a molding die having an air passage communicating with the outside of the cavity, while allowing the pressed molded body to be molded by pressing by the
By pressing the upper and lower molding surfaces relatively close to each other in the softened material to be molded placed in the cavity, the upper and lower molding surfaces and the peripheral surface press the molding material to form a press molded body. Molding process,
Separating the molding surface of the upper mold from the press molded body,
When the press-molded body has reached a predetermined temperature, the press-molded body is subjected to the lower molding while allowing gas to flow from the air passage into a space including a contact end portion between the molding surface of the lower mold and the press-molded body. The process of taking out from the surface,
A method for producing a press-formed body comprising:
2. The step of taking out the press-formed body,
The method for producing a press-formed body according to claim 1, wherein the method is started when the temperature of the press-formed body is in a temperature range of Tg-50C to TgC.
3. The softened material to be molded is a glass having a viscosity of 10 5.5 to 10 8 poise, and the molding die is configured to reduce the glass to a viscosity of 10 8 to 10 12.5 poise. The method for producing a press-formed body according to claim 1, wherein the press-forming is started when the press-forming is preheated to a temperature required to reach the temperature.
4. The method according to claim 1, wherein a release film is formed on the upper and lower molding surfaces.
5. The method according to claim 1, wherein the gas flowing into the space from the ventilation path is a non-oxidizing gas.
6. The method for producing a press-formed body according to claim 1, wherein a high-pressure gas flows into the space from the ventilation path.
7. The step of taking out the press-formed body,
Closing the cavity of the mold by the suction surface of the suction pad,
A step of sucking the gas in the cavity by the suction pad, causing the press-formed body in the cavity to float, and thereby adsorbing the press-formed body;
Moving the suction pad upward with respect to the molding die, and removing the press molded body from the molding die;
The method for producing a press-formed body according to any one of claims 1 to 6, comprising:
8. The method for producing a press-formed body according to claim 7, wherein the width of the outer peripheral surface of the press-formed body in the thickness direction is 1 mm or more.
9. The step of taking out the press-formed body,
Contacting the suction surface of the suction pad with the upper surface of the press-formed body,
A step of sucking the press-formed body by the suction pad,
Moving the suction pad upward with respect to the molding die, and removing the press molded body from the molding die;
The method for producing a press-formed body according to any one of claims 1 to 6, comprising:
10. The method for producing a press-formed body according to claim 9, wherein the width of the outer peripheral surface of the press-formed body in the thickness direction is 0.6 mm or less.
11. The method according to claim 1, wherein the upper and lower molding surfaces form an optically functional surface, and the press molding is a glass optical element.
12. A cavity surrounded by upper and lower molding surfaces and a peripheral surface located on an outer peripheral side thereof, and a material to be molded disposed in the cavity is brought closer to the upper and lower molding surfaces. thereby enabling molding of the pressed bodies and pressed by a mold having a vent passage communicating with the outside of said cavity,
By pressing the upper and lower molding surfaces relatively close to each other in the softened material to be molded placed in the cavity, the upper and lower molding surfaces and the peripheral surface press the molding material to form a press molded body. Press means for forming;
Separating means for separating the molding surface of the upper mold from the press molded body,
Suction means for adsorbing the press-molded body and removing it from the lower molding surface, while allowing gas to flow from the air passage into a space including a contact end portion between the molding surface of the lower mold and the press-molded body,
Press forming apparatus provided with.
13. The press forming apparatus according to claim 12, wherein the press formed body is a glass optical element.
14. The press molding apparatus according to claim 12, wherein the gas flowing into the space from the ventilation path is a non-oxidizing gas.
15. The molding die,
A lower mold including the lower molding surface, the peripheral surface and the ventilation path,
An upper mold having the upper molding surface,
The press molding apparatus according to any one of claims 12 to 14, comprising:
16. The suction means,
A suction pad having a suction surface for suctioning the press-formed body,
A support for supporting the suction pad movably in the vertical direction,
Lifting means for lifting and lowering the support,
The press molding device according to any one of claims 12 to 15, comprising:
17. The suction pad of the suction means has a suction surface having a diameter smaller than the diameter of the press-formed body so that the suction surface comes into contact with the upper surface of the press-formed body in the cavity. The press forming apparatus according to claim 16, wherein
18. The suction pad according to claim 16, wherein the suction pad of the suction means has a suction surface having a diameter capable of closing the cavity of the molding die, whereby the cavity is closed by the suction surface. Press molding equipment.
【０００１】
【発明の属する技術分野】
本発明は、ガラス等の被成形素材をプレスして、非球面レンズなどの高精度なプレス成形体を成形する精密プレス成形方法及び装置に関し、特に、プレス後に成形型に対するプレス成形体の剥離を容易にするための方法及び装置に関する。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention, the material to be formed of glass or the like by press relates precision press molding method and apparatus for forming a high-precision press-molded product, such as aspherical lenses, in particular, the separation of the pressed bodies against the mold after press A method and apparatus for facilitating.
【０００９】
【課題を解決するための手段】
本発明は、上下の成形面とその外周側に位置する周面とで囲まれたキャビティを備え、該キャビティ内に配置された被成形素材を、前記上下の成形面を相対的に接近させることによりプレスしてプレス成形体を成形可能とする成形型であって、該キャビティの外に通じる通気路を有する成形型を用意する工程と、該キャビティ内に配置した軟化状態の該被成形素材を、該上下の成形面を相対的に接近させることにより、該上下の成形面および前記周面により被成形素材をプレスしてプレス成形体を成形する工程と、前記上型の成形面を前記プレス成形体から離す工程と、前記下型の成形面とプレス成形体との接触端部を含む空間に前記通気路から気体を流入させつつ、前記プレス成形体を前記下成形面から取り出す工程とを備える。
[0009]
[Means for Solving the Problems]
The present invention includes a cavity surrounded by upper and lower molding surfaces and a peripheral surface located on the outer peripheral side thereof, and allows a material to be molded disposed in the cavity to relatively approach the upper and lower molding surfaces. a molded type which allows molding press molded product press by the steps of preparing a mold having a vent passage leading to the outside of the cavity, the該被molding material softened state of being disposed in the cavity A step of pressing a material to be molded by the upper and lower molding surfaces and the peripheral surface to form a press molded body by relatively bringing the upper and lower molding surfaces closer to each other; Separating the molded body from the molded body, and removing the press molded body from the lower molding surface while allowing gas to flow from the ventilation path into a space including a contact end portion between the molding surface of the lower mold and the press molded body. Prepare.
本発明のプレス成形は、例えばプレスの上軸及び／又は下軸を駆動して成形型を誘導加熱コイル内に配置した後、誘導加熱を行い、被成形材料が成形温度まで昇温した後、上軸及び／又は下軸を駆動して、さらに上型と下型をプレスすることにより行い得る。被成形ガラス素材は、成形型に供給した後に加熱軟化しても良いが、好ましくは予め加熱軟化した状態で成形型に供給する。加熱軟化した状態で供給する場合は、成形型を予め加熱しておくことが好ましい。特に本発明の成形方法においては、予め加熱軟化した被成形ガラス素材を成形型に供給する方法であって、成形型に供給される被成形ガラス素材の温度が成形型の温度より高いことが、表面欠陥等のないガラス光学素子を、比較的短いサイクル時間で製造できるという観点から好ましい。 Press molding of the present invention, for example, after driving the upper shaft and / or lower shaft of the press to arrange the mold in the induction heating coil, perform induction heating, after the material to be molded is heated to the molding temperature, It can be performed by driving the upper shaft and / or the lower shaft and further pressing the upper die and the lower die. The glass material to be molded may be heated and softened after being supplied to the molding die, but is preferably supplied to the molding die in a state where the glass material is heated and softened in advance. When supplying in a state of being heated and softened, it is preferable to heat the mold in advance. In particular, in the molding method of the present invention, a method of supplying a glass material to be molded which has been heated and softened in advance to a mold, wherein the temperature of the glass material to be supplied to the mold is higher than the temperature of the mold. It is preferable from the viewpoint that a glass optical element having no surface defect or the like can be manufactured in a relatively short cycle time.
この場合において、前記プレス成形体を取り出す工程は、吸着パッドの吸着面によって前記成形型のキャビティを閉塞する工程と、前記吸着パッドによる前記キャビティ内の気体の吸引を行い、前記キャビティ内の前記プレス成形体を浮き上がらせ、これによって該プレス成形体を吸着する工程と、前記成形型に対し前記吸着パッドを上方に移動させて、前記成形型から前記プレス成形体を取り出す工程を含んで構成することができる。この場合において、前記プレス成形体の外周面の厚み方向の幅が、１ｍｍ以上であることが好ましい。 In this case, the step of taking out the press-formed body includes the step of closing the cavity of the molding die with a suction surface of a suction pad and the suction of gas in the cavity by the suction pad. Lifting the molded body, thereby adsorbing the press molded body, and moving the suction pad upward with respect to the molding die to take out the press molded body from the molding die. Can be. In this case, the width in the thickness direction of the outer peripheral surface of the press-formed body is preferably 1 mm or more.
また、前記プレス成形体を取り出す工程は、吸着パッドの吸着面を前記プレス成形体の上面に接触させる工程と、前記吸着パッドによりプレス成形体を吸着する工程と、前記成形型に対し前記吸着パッドを上方に移動させて、前記成形型から前記プレス成形体を取り出す工程を含むことが好ましい。この場合において、前記プレス成形体の外周面の厚み方向の幅が、０．６ｍｍ以下であることが好ましい。 Further, the step of taking out the press-formed body includes a step of bringing a suction surface of a suction pad into contact with an upper surface of the press-formed body; a step of sucking the press-formed body by the suction pad; It is preferable to include a step of moving the press- formed body upward to take out the press- formed body from the forming die. In this case, the width in the thickness direction of the outer peripheral surface of the press-formed body is preferably 0.6 mm or less.
本発明は更に、成形型を用いたプレス成形装置に関する。本発明のプレス成形装置は、上下の成形面とその外周側に位置する周面とで囲まれたキャビティを備え、該キャビティ内に配置された被成形素材を、前記上下の成形面を相対的に接近させることによりプレスしてプレス成形体を成形可能とする成形型であって、該キャビティの外に通じる通気路を備えたものと、前記キャビティ内に配置した軟化状態の被成形素材を、該上下の成形面を相対的に接近させることにより、該上下の成形面および前記周面により被成形素材をプレスしてプレス成形体を成形する手段と、前記上型の成形面を前記プレス成形体から離す手段と、前記下型の成形面とプレス成形体との接触端部を含む空間に前記通気路から気体を流入させつつ、前記プレス成形体を前記下型成形面から取り出す手段とを備えて構成される。この場合において、前記プレス成形体は、ガラス光学素子であっても良い。さらに、プレス成形装置は、非酸化性雰囲気下に配置されているものでも良い。 The present invention further relates to a press molding apparatus using a mold. The press forming apparatus according to the present invention includes a cavity surrounded by upper and lower forming surfaces and a peripheral surface located on an outer peripheral side thereof, and a material to be formed disposed in the cavity is moved relative to the upper and lower forming surfaces. a mold which allows molding the pressed bodies are pressed by approaching to that with a vent passage leading to the outside of the cavity, the material to be formed in the softened state of being disposed within the cavity, Means for pressing a material to be formed by the upper and lower forming surfaces and the peripheral surface to form a press-formed body by relatively bringing the upper and lower forming surfaces closer to each other; Means for separating from the body, and means for taking out the press-formed body from the lower-mold forming surface while allowing gas to flow from the ventilation path into a space including a contact end portion between the forming surface of the lower mold and the press-formed body. Prepared and configured . In this case, the press-formed body may be a glass optical element. Further, the press forming apparatus may be arranged in a non-oxidizing atmosphere.
前記下型１４は、下成形面１４ａを上面に備える下型本体１４Ａと下型スリーブ１４Ｂとから構成される。下型本体１４Ａと下型スリーブ１４Ｂは、別に鋳造された後に一体にされる。下型スリーブ１４Ｂは、その上部に、該内周面に沿って成形周面１４ｂを備える。この成形型ユニット１０を組み立てた状態で、成形周面１４ｂを備えた下型スリーブ１４Ｂの上部は、上型スリーブ１２Ｂの内周側に嵌め入れられる。この下型１４の成形周面１４ｂ、下成形面１４ａ及び上型１２の上成形面１２ａによって、キャビティ１６が形成される。 The lower mold 14 includes a lower mold body 14A having a lower molding surface 14a on the upper surface and a lower mold sleeve 14B. The lower mold body 14A and the lower mold sleeve 14B are integrated after being separately cast. The lower sleeve 14B has a molding peripheral surface 14b on the upper part thereof along the inner peripheral surface. With the molding unit 10 assembled, the upper part of the lower sleeve 14B having the molding peripheral surface 14b is fitted into the inner peripheral side of the upper mold sleeve 12B. A cavity 16 is formed by the molding peripheral surface 14b of the lower die 14, the lower molding surface 14a, and the upper molding surface 12a of the upper die 12.
図５の工程（Ｃ）及び（Ｄ）は、プレス成形装置のプレスゾーンにおける工程を示している。工程（Ｃ）において、成形型ユニット１０は、上下のプレスヘッド４２、４４間に置かれ、工程（Ｄ）において上プレスヘッド４２が下降されることによって、上下型の成形面１２ａ及び１４ａ間で被成形ガラス素材Ｇがプレスされ、所望のガラス成形体Ｇが得られる。すなわち、前記上プレスヘッド４２の下降によって、下型１４に対し上型１２が下降されると、前記キャビティ１６内の被成形ガラス素材Ｇは押し潰され、各型の成形面に沿った形状のガラス成形体Ｇが得られる。この時、ガラス成形体Ｇの外周は成形周面１４ｂに至り、ここでガラス成形体Ｇの周囲が規定され、外周面が形成される。上プレスヘッド４２の下降は、上型スリーブ１２Ｂの下面が下型スリーブ１４Ｂの上面に突き当てられた位置で止められる。これによって成形されるガラス成形体Ｇの肉厚が一定となることが保証される。 Steps (C) and (D) in FIG. 5 show the steps in the press zone of the press forming apparatus. In the step (C), the molding die unit 10 is placed between the upper and lower press heads 42 and 44, and the upper press head 42 is lowered in the step (D), so that the upper and lower mold surfaces 12a and 14a are interposed. The glass material G to be molded is pressed to obtain a desired glass molded body G. That is, when the upper mold 12 is lowered with respect to the lower mold 14 by the lowering of the upper press head 42, the glass material G to be molded in the cavity 16 is crushed, and the shape of the glass material G along the molding surface of each mold is reduced. A glass molding G is obtained. At this time, the outer periphery of the glass molded body G reaches the molding peripheral surface 14b, where the periphery of the glass molded body G is defined, and the outer peripheral surface is formed. The lowering of the upper press head 42 is stopped at a position where the lower surface of the upper mold sleeve 12B abuts against the upper surface of the lower mold sleeve 14B. This thickness of the glass shaped material G to be shaped by is guaranteed to be constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000193459A JP4303404B2 (en) | 2000-06-27 | 2000-06-27 | Manufacturing method and apparatus for press-molded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000193459A JP4303404B2 (en) | 2000-06-27 | 2000-06-27 | Manufacturing method and apparatus for press-molded body |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005380598A Division JP2006143586A (en) | 2005-12-29 | 2005-12-29 | Method for drawing adsorber for formed body, method for drawing press formed body, and method for producing the same |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2002012431A JP2002012431A (en) | 2002-01-15 |
| JP2002012431A5 true JP2002012431A5 (en) | 2006-02-23 |
| JP4303404B2 JP4303404B2 (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000193459A Expired - Fee Related JP4303404B2 (en) | 2000-06-27 | 2000-06-27 | Manufacturing method and apparatus for press-molded body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4303404B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4780982B2 (en) * | 2005-03-14 | 2011-09-28 | Ｈｏｙａ株式会社 | Mold press molding apparatus and optical element manufacturing method |
| JP5021196B2 (en) * | 2005-09-29 | 2012-09-05 | Ｈｏｙａ株式会社 | Mold press mold, optical element manufacturing method, and concave meniscus lens |
| JP4790570B2 (en) * | 2006-11-14 | 2011-10-12 | オリンパス株式会社 | Optical element manufacturing method |
| JP4951394B2 (en) * | 2007-04-18 | 2012-06-13 | オリンパス株式会社 | Optical element molding method |
| JPWO2013172245A1 (en) | 2012-05-15 | 2016-01-12 | コニカミノルタ株式会社 | Method for producing glass molded body |
| JP6280335B2 (en) * | 2013-09-26 | 2018-02-14 | Hoya株式会社 | Adsorption device, transport device, and optical element manufacturing device |
| WO2023026446A1 (en) * | 2021-08-26 | 2023-03-02 | オリンパス株式会社 | Method for forming optical element and molds for forming optical element |
-
2000
- 2000-06-27 JP JP2000193459A patent/JP4303404B2/en not_active Expired - Fee Related
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