JP2018034314A - Fine shape transfer molding method and fine shape transfer molding die - Google Patents

Fine shape transfer molding method and fine shape transfer molding die Download PDF

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JP2018034314A
JP2018034314A JP2016166620A JP2016166620A JP2018034314A JP 2018034314 A JP2018034314 A JP 2018034314A JP 2016166620 A JP2016166620 A JP 2016166620A JP 2016166620 A JP2016166620 A JP 2016166620A JP 2018034314 A JP2018034314 A JP 2018034314A
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cavity
fine shape
space
shape transfer
transfer molding
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橋本　将臣
Masaomi Hashimoto
将臣 橋本
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Enplas Corp
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Enplas Corp
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Priority to PCT/JP2017/029849 priority patent/WO2018043191A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To transfer a fine shape to the surface of a molded part at high precision and high efficiency without causing foaming on the surface of the molded part.SOLUTION: A part of a cavity 6 is composed of the tip 11b of a cavity frame 11. The cavity frame 11 slide-moves between a position composing a part of the cavity 6 and an evacuation position far from the cavity 6 along a guide hole 12 formed at a die body 3. The space 12 of the guide hole 12 produced by the movement of the cavity frame 11 to the evacuation position is connected to an external fluid feed apparatus 21 for plasticization by flow passages 18, 20. A molded article 8 in the cavity 6 is plasticized with a fluid for plasticization at which the face confronted with the space 12a of the guide hole 12 is introduced into the space 12a. The tip 11b of the cavity frame 11 is pressed on the plasticized surface of the molded article 8, and the fine shape of the tip 11b of the cavity frame 11 is transferred thereto.SELECTED DRAWING: Figure 1

Description

この発明は、樹脂成形品の表面を可塑化用流体で可塑化し、その可塑化用流体で可塑化した部分に、微細形状を高精度に且つ高効率で転写することを可能にする微細形状転写成形方法、及び微細形状転写成形金型に関するものである。   This invention is a fine shape transfer that makes it possible to plasticize the surface of a resin molded product with a plasticizing fluid and to transfer the fine shape with high accuracy and high efficiency to the plasticized portion of the plasticized fluid. The present invention relates to a molding method and a fine shape transfer molding die.

従来から、キャビティ内の樹脂とキャビティ面との間に可塑化用流体としての二酸化炭素を注入し、樹脂の表面を可塑化して、転写性を高めるようにした射出成形方法が知られている。   2. Description of the Related Art Conventionally, an injection molding method is known in which carbon dioxide as a plasticizing fluid is injected between a resin in a cavity and a cavity surface to plasticize the surface of the resin to improve transferability.

（第１従来技術）
例えば、図１９に示す射出成形方法は、２３０℃に加熱したバレル１００内の溶融樹脂を４０℃に設定した金型１０１のキャビティ１０２内にスクリュー１０３で充填した後、スクリュー１０３を完全に停止（１．５秒間停止状態を保持）させ、このスクリュー１０３の停止時間内に、圧力が１０ＭＰａの二酸化炭素をキャビティ１０２の内面と溶融樹脂との間に二酸化炭素注入装置１０４によって注入し、キャビティ１０２内の樹脂のスキン層を軟化させる（可塑化させる）ようになっている。その後、図１９に示す射出成形方法は、バレル１００内の溶融樹脂をスクリュー１０３でキャビティ１０２内に押し込み、キャビティ１０２内の樹脂圧力を高め、キャビティ１０２内の樹脂の軟化したスキン層をキャビティ１０２の内面に密着させるようになっている。その結果、図１９に示す射出成形方法によれば、転写性及び光沢性に優れた射出成形品が成形される（特許文献１参照）。 (First prior art)
For example, in the injection molding method shown in FIG. 19, after the molten resin in the barrel 100 heated to 230 ° C. is filled into the cavity 102 of the mold 101 set to 40 ° C. with the screw 103, the screw 103 is completely stopped ( During the stop time of the screw 103, carbon dioxide having a pressure of 10 MPa is injected between the inner surface of the cavity 102 and the molten resin by the carbon dioxide injection device 104. The resin skin layer is softened (plasticized). After that, in the injection molding method shown in FIG. 19, the molten resin in the barrel 100 is pushed into the cavity 102 with the screw 103, the resin pressure in the cavity 102 is increased, and the softened skin layer of the resin in the cavity 102 is formed in the cavity 102. It comes to adhere to the inner surface. As a result, according to the injection molding method shown in FIG. 19, an injection molded product excellent in transferability and glossiness is molded (see Patent Document 1).

しかしながら、この第１従来技術に係る射出成形方法は、キャビティ１０２の溶融樹脂が保圧・冷却される前に、高圧（１０ＭＰａ）の二酸化炭素を４０℃に設定した金型１０１のキャビティ１０２内に注入するため、キャビティ１０２内の二酸化炭素が超臨界状態になり、可塑化されたスキン層が発泡する虞がある。そのため、第１従来技術に係る射出成形方法は、レンズや導光板等の光学素子の成形に利用できないという不具合を有している。   However, in the injection molding method according to the first prior art, before the molten resin in the cavity 102 is held and cooled, the high pressure (10 MPa) carbon dioxide is set in the cavity 102 of the mold 101 set to 40 ° C. Because of the injection, carbon dioxide in the cavity 102 becomes supercritical, and the plasticized skin layer may foam. Therefore, the injection molding method according to the first prior art has a problem that it cannot be used for molding optical elements such as lenses and light guide plates.

（第２従来技術）
図２０は、第１従来技術のような不具合を解決することが期待される形状転写方法を示すものである。この図２０に示す形状転写方法は、ベース部１１０の上に樹脂板１１１を置く工程と（図２０（ａ））、圧力容器１１２を樹脂板１１１に押し付けることによって圧力容器１１２と樹脂板１１１とで密閉空間１１３を構成すると共に樹脂板１１１の一部（単に樹脂（１１１）と略称する）が密閉空間１１３に配置される工程と（図２０（ｂ））、気体の二酸化炭素１１４ａを導入バルブ１１９Ａを介して密閉空間１１３内に導入し、樹脂（１１１）の表面を液体の二酸化炭素１１４ｂで浸す工程と（図２０（ｃ））、を有している。この図２０に示す形状転写方法は、この図２０（ａ）〜（ｃ）の一連の工程により、樹脂（１１１）の表面が可塑化し、金型１１５の形状を樹脂（１１１）の可塑化した表面に転写できる状態になる。なお、密閉空間１１３内に導入された気体の二酸化炭素１１４ａは、一部が液化して気液混合状態になり、樹脂（１１１）の表面を液体の二酸化炭素１１４ｂが覆う状態になっている。 (Second conventional technology)
FIG. 20 shows a shape transfer method expected to solve the problem as in the first prior art. The shape transfer method shown in FIG. 20 includes a step of placing the resin plate 111 on the base portion 110 (FIG. 20A), and the pressure vessel 112 and the resin plate 111 by pressing the pressure vessel 112 against the resin plate 111. And a step in which a part of the resin plate 111 (simply abbreviated as resin (111)) is disposed in the sealed space 113 (FIG. 20B), and gaseous carbon dioxide 114a is introduced into the valve. 119A is introduced into the sealed space 113, and the surface of the resin (111) is immersed in liquid carbon dioxide 114b (FIG. 20 (c)). In the shape transfer method shown in FIG. 20, the surface of the resin (111) is plasticized by the series of steps of FIGS. 20 (a) to (c), and the shape of the mold 115 is plasticized by the resin (111). It can be transferred to the surface. Part of the gaseous carbon dioxide 114a introduced into the sealed space 113 is liquefied to be in a gas-liquid mixed state, and the liquid carbon dioxide 114b covers the surface of the resin (111).

その後、図２０に示す形状転写方法は、ピストン１１６を下げ、金型１１５を樹脂（１１１）の可塑化した表面に押し当てる工程と（図２０（ｄ））、ピストン１１６を戻す工程と（図２０（ｅ））、密閉空間１１３内の二酸化炭素（１１４ａ，１１４ｂ）を排気バルブ１１９Ｂを介して排気する工程と（図２０（ｆ））、圧力容器１１２を樹脂板１１１から離す工程と（図２０（ｇ））、を順に実施するようになっている。その結果、この図２０に示す形状転写方法は、超臨界状態の二酸化炭素を使用して樹脂の表面を可塑化した場合のような発泡の虞がなく、樹脂板１１１の表面に金型１１５の形状を転写することが可能になる（特許文献２参照）。   After that, the shape transfer method shown in FIG. 20 includes a step of lowering the piston 116 and pressing the mold 115 against the plasticized surface of the resin (111) (FIG. 20D), and a step of returning the piston 116 (FIG. 20 (e)), a step of exhausting carbon dioxide (114a, 114b) in the sealed space 113 through the exhaust valve 119B (FIG. 20 (f)), and a step of separating the pressure vessel 112 from the resin plate 111 (FIG. 20 (g)) in order. As a result, in the shape transfer method shown in FIG. 20, there is no risk of foaming as in the case where the surface of the resin is plasticized using carbon dioxide in a supercritical state. The shape can be transferred (see Patent Document 2).

特開２００６−３３５０１１号公報JP 2006-335011 A 特開２０１４−１８８９５０号公報JP 2014-188950 A

しかしながら、図２０に示す第２従来技術に係る形状転写方法は、樹脂板１１１を別の場所（別の成形装置）で予め成形し（第１の成形プロセスを実施し）、その成形後の樹脂板１１１を使用して、図２０（ａ）〜（ｇ）の一連の工程を実施し（第２の成形プロセスを実施し）、樹脂板１１１の表面の一部に金型１１５の形状を転写するようになっているため、射出成形と比較し、生産効率が低下し、生産コストが高くなるという不具合を有している。   However, in the shape transfer method according to the second prior art shown in FIG. 20, the resin plate 111 is previously molded in another place (another molding apparatus) (the first molding process is performed), and the resin after the molding is performed. 20A to 20G are performed using the plate 111 (the second molding process is performed), and the shape of the mold 115 is transferred to a part of the surface of the resin plate 111. Therefore, as compared with the injection molding, the production efficiency is lowered and the production cost is increased.

また、図２０に示す第２従来技術に係る形状転写方法は、別の場所で成形された樹脂板１１１をベース部１１０の上に置くようになっているため、樹脂板１１１をベース部１１０の上に置く際の組み付け誤差が生じ、金型１１５の形状を樹脂板１１１の所定位置に高精度に転写するのが難しいという問題を有している。   In the shape transfer method according to the second prior art shown in FIG. 20, the resin plate 111 molded in another place is placed on the base portion 110. Assembling errors occur when placed on top, and it is difficult to transfer the shape of the mold 115 to a predetermined position of the resin plate 111 with high accuracy.

そこで、本発明は、成形品の表面が発泡するのを抑え、微細形状を成形品の表面に高精度に且つ高効率に転写することを可能にする微細形状転写成形方法、及び微細形状転写成形金型の提供を目的とする。   Accordingly, the present invention provides a fine shape transfer molding method and a fine shape transfer molding that can suppress the foaming of the surface of the molded product and transfer the fine shape to the surface of the molded product with high accuracy and high efficiency. The purpose is to provide molds.

本発明に係る微細形状転写成形方法は、
（１）．金型１のキャビティ６内に溶融樹脂を射出し、キャビティ６内の溶融樹脂を保圧した状態で冷却して成形品８を形作る第１工程と、
（２）．前記第１工程の終了後に、前記金型１内に移動可能に配置され且つ前記キャビティ６の一部を構成するキャビティ駒１１を前記キャビティ６の前記成形品８から離れた退避位置へ移動させる第２工程と、
（３）．前記キャビティ駒１１が移動して生じた前記金型１内の空間１２ａに可塑化用流体を導入する第３工程と、
（４）．前記可塑化用流体が導入された前記空間１２ａに対向する前記成形品８の表面を、前記可塑化用流体で可塑化する第４工程と、
（５）．前記第４工程の終了後に、前記退避位置の前記キャビティ駒１１を前記キャビティ６内の前記成形品８へ向けて移動させ、前記キャビティ駒１１の先端１１ｂを前記キャビティ６内の前記成形品８の可塑化した表面に押し当て、前記キャビティ駒１１の先端１１ｂに形成された微細形状を前記成形品８の可塑化した表面に転写する第５工程と、
を備えたことを特徴としている。 The fine shape transfer molding method according to the present invention comprises:
(1). A first step of injecting a molten resin into the cavity 6 of the mold 1 and cooling the molten resin in the cavity 6 in a pressure-holding state to form a molded article 8;
(2). After the completion of the first step, a cavity piece 11 that is movably disposed in the mold 1 and that constitutes a part of the cavity 6 is moved to a retracted position away from the molded product 8 of the cavity 6. Two steps,
(3). A third step of introducing a plasticizing fluid into the space 12a in the mold 1 generated by the movement of the cavity piece 11;
(4). A fourth step of plasticizing the surface of the molded article 8 facing the space 12a into which the plasticizing fluid is introduced with the plasticizing fluid;
(5). After completion of the fourth step, the cavity piece 11 in the retracted position is moved toward the molded product 8 in the cavity 6, and the tip 11 b of the cavity piece 11 is moved to the molded product 8 in the cavity 6. A fifth step of pressing against the plasticized surface and transferring the fine shape formed at the tip 11b of the cavity piece 11 to the plasticized surface of the molded article 8,
It is characterized by having.

また、本発明に係る微細形状転写成形方法は、
（１）．金型１のキャビティ６内に溶融樹脂を射出し、キャビティ６内の溶融樹脂を保圧した状態で冷却して成形品８を形作る第１工程と、
（２）．前記第１工程の終了後に、前記金型１内に移動可能に配置され且つ前記キャビティ６の一部を構成するキャビティ駒１１を前記キャビティ６の前記成形品８から離れた退避位置へ移動させる第２工程と、
（３）．前記キャビティ駒１１が移動して生じた前記金型１内の空間１２ａに気体を導入する第３工程と、
（４）．前記気体が導入された前記空間１２ａに対向する前記成形品８の表面を、前記気体を圧縮して生じた可塑化用流体で可塑化する第４工程と、
（５）．前記第４工程の終了後に、前記退避位置の前記キャビティ駒１１を前記キャビティ６内の前記成形品８へ向けて移動させ、前記キャビティ駒１１の先端１１ｂを前記キャビティ６内の前記成形品８の可塑化した表面に押し当て、前記キャビティ駒１１の先端１１ｂに形成された微細形状を前記成形品８の可塑化した表面に転写する第５工程と、
を備えたことを特徴としている。 In addition, the fine shape transfer molding method according to the present invention,
(1). A first step of injecting a molten resin into the cavity 6 of the mold 1 and cooling the molten resin in the cavity 6 in a pressure-holding state to form a molded article 8;
(2). After the completion of the first step, a cavity piece 11 that is movably disposed in the mold 1 and that constitutes a part of the cavity 6 is moved to a retracted position away from the molded product 8 of the cavity 6. Two steps,
(3). A third step of introducing gas into the space 12a in the mold 1 generated by the movement of the cavity piece 11;
(4). A fourth step of plasticizing the surface of the molded product 8 facing the space 12a into which the gas is introduced with a plasticizing fluid generated by compressing the gas;
(5). After completion of the fourth step, the cavity piece 11 in the retracted position is moved toward the molded product 8 in the cavity 6, and the tip 11 b of the cavity piece 11 is moved to the molded product 8 in the cavity 6. A fifth step of pressing against the plasticized surface and transferring the fine shape formed at the tip 11b of the cavity piece 11 to the plasticized surface of the molded article 8,
It is characterized by having.

また、本発明は、キャビティ６内の成形品８の表面に微細形状を転写する微細形状転写成形金型１に関するものである。この発明において、前記キャビティ６は、一部がキャビティ駒１１の先端１１ｂで構成される。また、前記キャビティ駒１１は、前記キャビティ６の一部を構成する位置と前記キャビティ６から離れた退避位置との間を金型本体３に形成されたガイド穴１２に沿ってスライド移動できるようになっている。また、前記キャビティ駒１１が前記退避位置に移動することによって生じた前記ガイド穴１２の空間１２ａは、外部の可塑化用流体供給装置２１に流路１８，２０で接続され、前記可塑化用流体供給装置２１から可塑化用流体が供給される。また、前記キャビティ６内の前記成形品８は、前記ガイド穴１２の空間１２ａに対向する面が前記ガイド穴１２の空間１２ａ内に導入された前記可塑化用流体で可塑化される。また、前記成形品８の可塑化された表面には、前記キャビティ駒１１の先端１１ｂが押し付けられて、前記キャビティ駒１１の先端１１ｂの微細形状が転写されるようになっている。   The present invention also relates to a fine shape transfer mold 1 for transferring a fine shape to the surface of a molded product 8 in a cavity 6. In the present invention, a part of the cavity 6 is constituted by the tip 11 b of the cavity piece 11. Further, the cavity piece 11 is slidable along a guide hole 12 formed in the mold body 3 between a position constituting a part of the cavity 6 and a retracted position away from the cavity 6. It has become. The space 12a of the guide hole 12 generated by the movement of the cavity piece 11 to the retracted position is connected to an external plasticizing fluid supply device 21 through flow paths 18 and 20, and the plasticizing fluid A plasticizing fluid is supplied from the supply device 21. The molded product 8 in the cavity 6 is plasticized by the plasticizing fluid introduced into the space 12 a of the guide hole 12 at a surface facing the space 12 a of the guide hole 12. Further, the tip 11b of the cavity piece 11 is pressed against the plasticized surface of the molded article 8, and the fine shape of the tip 11b of the cavity piece 11 is transferred.

また、本発明は、キャビティ６内の成形品８の表面に微細形状を転写する微細形状転写成形金型１に関するものである。この発明において、前記キャビティ６は、一部がキャビティ駒１１の先端１１ｂで構成される。また、前記キャビティ駒１１は、前記キャビティ６の一部を構成する位置と前記キャビティ６から離れた退避位置との間を金型本体３に形成されたガイド穴１２に沿ってスライド移動できるようになっている。また、前記キャビティ駒１１が前記退避位置に移動することによって生じた前記ガイド穴１２の空間１２ａは、外部の気体供給装置に流路１８，２０で接続され、前記気体供給装置２１Ａから気体が供給される。また、前記キャビティ６内の前記成形品８は、前記ガイド穴１２の空間１２ａに対向する面が前記ガイド穴１２の空間１２ａ内に導入された前記気体を前記キャビティ駒１１で圧縮することにより生じた可塑化用流体で可塑化される。また、前記成形品８の可塑化された表面には、前記キャビティ駒１１の先端１１ｂが押し付けられて、前記キャビティ駒１１の先端１１ｂの微細形状が転写されるようになっている。   The present invention also relates to a fine shape transfer mold 1 for transferring a fine shape to the surface of a molded product 8 in a cavity 6. In the present invention, a part of the cavity 6 is constituted by the tip 11 b of the cavity piece 11. Further, the cavity piece 11 is slidable along a guide hole 12 formed in the mold body 3 between a position constituting a part of the cavity 6 and a retracted position away from the cavity 6. It has become. The space 12a of the guide hole 12 generated by moving the cavity piece 11 to the retracted position is connected to an external gas supply device by flow paths 18 and 20, and gas is supplied from the gas supply device 21A. Is done. Further, the molded product 8 in the cavity 6 is generated by compressing the gas introduced into the space 12 a of the guide hole 12 by the cavity piece 11 with the surface facing the space 12 a of the guide hole 12. Plasticized with a plasticizing fluid. Further, the tip 11b of the cavity piece 11 is pressed against the plasticized surface of the molded article 8, and the fine shape of the tip 11b of the cavity piece 11 is transferred.

本発明は、成形品の表面が発泡するのを抑えることができ、微細形状を成形品の表面に高精度に且つ高効率に転写することができる。   The present invention can suppress foaming of the surface of a molded product, and can transfer a fine shape onto the surface of the molded product with high accuracy and high efficiency.

本発明の第１実施形態に係る微細形状転写成形金型を示す図であり、本発明に係る微細形状転写成形方法を実施するために使用される微細形状転写成形金型の縦断面図である。It is a figure which shows the fine shape transcription | transfer mold which concerns on 1st Embodiment of this invention, and is a longitudinal cross-sectional view of the fine shape transcription | transfer mold used in order to implement the fine shape transcription | transfer molding method which concerns on this invention. . 第１実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の１の第１工程から第４工程までを時系列で示す図である。It is a figure which shows the 1st process to the 4th process of 1 of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 1st Embodiment in time series. 第１実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の１の第５工程から成形品の取り出しまでを時系列で示す図である。It is a figure which shows from the 5th process 1 of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 1st Embodiment to taking-out of a molded article in time series. 第１実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の２の第１工程から第４工程までを時系列で示す図である。It is a figure which shows the 2nd 1st process to the 4th process of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 1st Embodiment in time series. 第１実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の２の第５工程から成形品の取り出しまでを時系列で示す図である。It is a figure which shows from the 5th process 2 of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 1st Embodiment to taking-out of a molded product in time series. 第１実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の３の第１工程から第４工程までを時系列で示す図である。It is a figure which shows from the 1st process of 3 of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 1st Embodiment to the 4th process in time series. 第１実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の３の第５工程から成形品の取り出しまでを時系列で示す図である。It is a figure which shows from the 5th process of 3 of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 1st Embodiment to taking-out of a molded article in time series. 第１実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の４の第１工程から第４工程までを時系列で示す図である。It is a figure which shows from the 1st process of the 4th of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 1st Embodiment to the 4th process in time series. 第１実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の４の第５工程から成形品の取り出しまでを時系列で示す図である。It is a figure which shows from the 5th process of 4th of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 1st Embodiment to taking-out of a molded article in time series. 本発明の第２実施形態に係る微細形状転写成形金型を示す図であり、本発明に係る微細形状転写成形方法を実施するために使用される微細形状転写成形金型の縦断面図である。It is a figure which shows the fine shape transfer molding die concerning 2nd Embodiment of this invention, and is a longitudinal cross-sectional view of the fine shape transfer molding die used in order to implement the fine shape transfer molding method which concerns on this invention. . 第２実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の１の第１工程から第４工程までを時系列で示す図である。It is a figure which shows the 1st process to the 4th process of 1 of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 2nd Embodiment in time series. 第２実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の１の第５工程から成形品の取り出しまでを時系列で示す図である。It is a figure which shows from the 5th process 1 of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 2nd Embodiment to taking-out of a molded article in time series. 第２実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の２の第１工程から第４工程までを時系列で示す図である。It is a figure which shows the 2nd 1st process to the 4th process of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 2nd Embodiment in time series. 第２実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の２の第５工程から成形品の取り出しまでを時系列で示す図である。It is a figure which shows from the 5th process of 2 of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 2nd Embodiment to taking-out of a molded article in time series. 第２実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の３の第１工程から第４工程までを時系列で示す図である。It is a figure which shows the 3rd 1st process to 4th process of the fine shape transfer molding method using the fine shape transfer molding die concerning 2nd Embodiment in time series. 第２実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の３の第５工程から成形品の取り出しまでを時系列で示す図である。It is a figure which shows from the 5th process of 3 of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 2nd Embodiment to taking-out of a molded article in time series. 第２実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の４の第１工程から第４工程までを時系列で示す図である。It is a figure which shows from the 1st process of the 4th of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 2nd Embodiment to the 4th process in time series. 第２実施形態に係る微細形状転写成形金型を使用した微細形状転写成形方法の４の第５工程から成形品の取り出しまでを時系列で示す図である。It is a figure which shows from the 5th process of 4th of the fine shape transfer molding method using the fine shape transfer molding die which concerns on 2nd Embodiment to taking-out of a molded article in time series. 第１従来技術に係る射出成形方法を説明するための図である。It is a figure for demonstrating the injection molding method which concerns on a 1st prior art. 第２従来技術に係る形状形成方法を説明するための図である。It is a figure for demonstrating the shape formation method which concerns on a 2nd prior art.

以下、本発明の実施形態を図面に基づき詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

［第１実施形態］
（微細形状転写成形金型）
図１は、本発明の第１実施形態に係る微細形状転写成形金型１を示す図であり、本発明に係る微細形状転写成形方法を実施するために使用される微細形状転写成形金型１の縦断面図である。 [First Embodiment]
(Fine shape transfer mold)
FIG. 1 is a view showing a fine shape transfer molding die 1 according to the first embodiment of the present invention, and is used for carrying out the fine shape transfer molding method 1 according to the present invention. FIG.

図１に示すように、本実施形態に係る微細形状転写成形金型１は、可動側金型２の金型本体３で、且つ金型本体３の固定側金型４に対向する面（型合わせ面）５側に、キャビティ６が形成されている。このキャビティ６は、縦断面形状が矩形形状の凹所であり、キャビティ内面７が成形品８の外観に転写されるようになっている。また、キャビティ６は、溶融樹脂を射出するゲート１０（例えば、サイドゲート）が開口し、キャビティ駒１１のガイド穴１２が開口すると共に、エジェクタピン１３のガイド穴１４が開口している。なお、溶融樹脂は、熱可塑性樹脂であり、例えば、アクリル樹脂、ポリカーボネート（ＰＣ）、ポリ塩化ビニル（ＰＶＣ）、ＡＢＳ樹脂等である。   As shown in FIG. 1, a fine shape transfer molding die 1 according to the present embodiment is a die body 3 of a movable side mold 2 and a surface (die mold) facing the fixed side mold 4 of the mold body 3. A cavity 6 is formed on the mating surface 5 side. The cavity 6 is a recess having a rectangular cross section, and the cavity inner surface 7 is transferred to the appearance of the molded product 8. In the cavity 6, a gate 10 (for example, a side gate) for injecting molten resin is opened, a guide hole 12 in the cavity piece 11 is opened, and a guide hole 14 in the ejector pin 13 is opened. The molten resin is a thermoplastic resin, such as an acrylic resin, polycarbonate (PC), polyvinyl chloride (PVC), or ABS resin.

キャビティ駒１１は、頭部１１ａが第１駆動プレート１５に固定され、第１駆動プレート１５が操作ロッド１６を介して図外の駆動手段（例えば、油圧シリンダ）によって作動させられることにより、可動側金型２の金型本体３に形成されたガイド穴１２内をスライド移動する。そして、キャビティ駒１１は、先端１１ｂがキャビティ内面７の一部を構成する位置（射出成形位置）から第１駆動プレート１５が可動側金型基板１７の近傍に位置するまで、ガイド穴１２内をスライド移動できるようになっている。ここで、第１駆動プレート１５が可動側金型基板１７の近傍に位置し、内部流路（連通穴）１８がガイド穴１２の空間１２ａに開口するキャビティ駒１１の位置を、キャビティ駒１１の退避位置とする。そして、キャビティ駒１１は、退避位置にある場合、先端１１ｂがキャビティ６から十分に離れており、先端１１ｂとキャビティ６との間のガイド穴１２内に空間１２ａが形成されるようになっている。   The cavity piece 11 has a head 11 a fixed to the first drive plate 15, and the first drive plate 15 is actuated by a drive means (for example, a hydraulic cylinder) (not shown) via the operation rod 16. The inside of the guide hole 12 formed in the mold body 3 of the mold 2 is slid and moved. The cavity piece 11 passes through the guide hole 12 from the position (injection molding position) where the tip 11b constitutes a part of the cavity inner surface 7 until the first drive plate 15 is located in the vicinity of the movable mold substrate 17. The slide can be moved. Here, the position of the cavity piece 11 where the first drive plate 15 is located in the vicinity of the movable mold substrate 17 and the internal flow path (communication hole) 18 opens into the space 12 a of the guide hole 12 is Set to the retracted position. When the cavity piece 11 is in the retracted position, the tip 11b is sufficiently separated from the cavity 6, and a space 12a is formed in the guide hole 12 between the tip 11b and the cavity 6. .

可動側金型２の金型本体３に形成されたガイド穴１２は、キャビティ駒１１が退避位置にある場合、空間１２ａが金型本体３に形成された内部流路１８に接続され、その内部流路１８に接続された外部流路２０を介して可塑化用流体供給装置２１（又は、気体供給装置２１Ａ）に接続されるようになっている。外部流路２０は、途中に流路切換弁２２が配置されている。この流路切換弁２２は、可塑化用流体供給装置２１から送り出された可塑化用流体（液体の二酸化炭素若しくは超臨界状態の二酸化炭素）、若しくは気体供給装置２１Ａから送り出された気体（二酸化炭素）をガイド穴１２の空間１２ａに導入するか、又はガイド穴１２の空間１２ａに導入された可塑化用流体若しくは気体をガイド穴１２の空間１２ａから排出することを可能にする。なお、可塑化用流体供給装置２１は、可塑化用流体が液体二酸化炭素（液体の二酸化炭素）の場合、液体二酸化炭素が充填された容器と、この容器内の液体二酸化炭素を外部流路２０へ送り出すポンプとで構成される。また、可塑化用流体供給装置２１は、可塑化用流体が超臨界二酸化炭素（超臨界状態の二酸化炭素）の場合、二酸化炭素ガスが充填されたガスボンベと、超臨界二酸化炭素供給装置（例えば、株式会社タクミナ製のＳＣＦ−６００型）とで構成される。また、気体供給装置２１Ａは、気体の二酸化炭素（二酸化炭素ガス）が充填されたガスボンベであり、可塑化用流体供給装置２１に代えて使用される。   When the cavity piece 11 is in the retracted position, the guide hole 12 formed in the mold body 3 of the movable mold 2 is connected to the internal flow path 18 formed in the mold body 3, The plasticizing fluid supply device 21 (or the gas supply device 21A) is connected via an external flow channel 20 connected to the flow channel 18. The external flow path 20 is provided with a flow path switching valve 22 in the middle. The flow path switching valve 22 is a plasticizing fluid (liquid carbon dioxide or supercritical carbon dioxide) delivered from the plasticizing fluid supply device 21 or a gas (carbon dioxide delivered from the gas supply device 21A). ) Is introduced into the space 12 a of the guide hole 12, or the plasticizing fluid or gas introduced into the space 12 a of the guide hole 12 can be discharged from the space 12 a of the guide hole 12. When the plasticizing fluid is liquid carbon dioxide (liquid carbon dioxide), the plasticizing fluid supply apparatus 21 removes the liquid carbon dioxide in the container filled with the liquid carbon dioxide and the external flow path 20. It is composed of a pump that feeds out. Further, when the plasticizing fluid is supercritical carbon dioxide (supercritical carbon dioxide), the plasticizing fluid supply device 21 includes a gas cylinder filled with carbon dioxide gas, and a supercritical carbon dioxide supply device (for example, SCF-600 type manufactured by Takumina Co., Ltd.). The gas supply device 21 </ b> A is a gas cylinder filled with gaseous carbon dioxide (carbon dioxide gas), and is used in place of the plasticizing fluid supply device 21.

また、可動側金型２の金型本体３には、キャビティ６内に出し入れされるエジェクタピン１３が配置されている。このエジェクタピン１３は、頭部１３ａが第２駆動プレート２３に固定され、第２駆動プレート２３が図外の駆動手段（例えば、油圧シリンダ）によって作動させられることによって、先端１３ｂがキャビティ内面７の一部を構成する位置から、先端１３ｂがキャビティ６内の成形品８をキャビティ６外へ押し出す位置まで、ガイド穴１４に沿って移動させられる。   An ejector pin 13 that is inserted into and removed from the cavity 6 is disposed in the mold body 3 of the movable mold 2. The ejector pin 13 has a head 13 a fixed to the second drive plate 23, and the second drive plate 23 is actuated by drive means (for example, a hydraulic cylinder) (not shown), so that the tip 13 b is formed on the cavity inner surface 7. The tip 13b is moved along the guide hole 14 from a position constituting a part to a position where the tip 13b pushes the molded product 8 in the cavity 6 out of the cavity 6.

また、本実施形態に係る微細形状転写成形金型１は、可動側金型２及び固定側金型４が射出成形される樹脂材料のガラス転移温度以下の温度に管理され、加熱冷却制御が行われるようになっていない。また、本実施形態に係る微細形状転写成形金型１は、可塑化用流体が液体二酸化炭素の場合、可動側金型２及び固定側金型４が３１℃以下に温度管理される。   In addition, the fine shape transfer molding die 1 according to the present embodiment is controlled to a temperature not higher than the glass transition temperature of the resin material on which the movable side die 2 and the fixed side die 4 are injection-molded, and heating / cooling control is performed. It is not supposed to be. In the fine shape transfer molding die 1 according to this embodiment, when the plasticizing fluid is liquid carbon dioxide, the temperature of the movable side die 2 and the fixed side die 4 is controlled to 31 ° C. or lower.

（微細形状転写成形方法の１）
図２（ａ）〜（ｆ）及び図３（ａ）〜（ｄ）は、本実施形態に係る微細形状転写成形金型１を使用した微細形状転写成形方法の１の工程から成形品８の取り出しまでを時系列で示す図である。この微細形状転写成形方法の１は、可塑化用流体として、液体二酸化炭素、又は超臨界二酸化炭素が使用される。 (1 of fine shape transfer molding method)
2 (a) to 2 (f) and FIGS. 3 (a) to 3 (d) are drawings of the molded product 8 from step 1 of the fine shape transfer molding method using the fine shape transfer molding die 1 according to the present embodiment. It is a figure which shows until extraction in time series. In this fine shape transfer molding method, liquid carbon dioxide or supercritical carbon dioxide is used as a plasticizing fluid.

この微細形状転写成形方法の１において、第１工程は、型締めをした（可動側金型２と固定側金型４の型合わせ面５を突き合わせた）後に（図２（ａ））、キャビティ駒１１をガイド穴１２に沿って射出成形位置まで移動させ（図２（ｂ））、溶融樹脂（熱可塑性樹脂材料）を図外のゲートからキャビティ６内に射出し、キャビティ６内を保圧した後、キャビティ６内の樹脂を冷却して、成形品８を形作る（図２（ｃ））。なお、本実施形態において、射出成形に使用される樹脂材料は、熱可塑性樹脂材料（例えば、アクリル樹脂、ポリカーボネート（ＰＣ）、ポリ塩化ビニル（ＰＶＣ）、ＡＢＳ樹脂等）である。   In this fine shape transfer molding method 1, the first step is to perform cavity clamping after the mold is clamped (the mold-matching surfaces 5 of the movable mold 2 and the fixed mold 4 are abutted) (FIG. 2A). The piece 11 is moved along the guide hole 12 to the injection molding position (FIG. 2B), molten resin (thermoplastic resin material) is injected into the cavity 6 from a gate not shown in the figure, and the pressure in the cavity 6 is maintained. After that, the resin in the cavity 6 is cooled to form the molded product 8 (FIG. 2C). In this embodiment, the resin material used for injection molding is a thermoplastic resin material (for example, acrylic resin, polycarbonate (PC), polyvinyl chloride (PVC), ABS resin, etc.).

第２工程は、第１工程の終了後に、射出成形位置のキャビティ駒１１を、キャビティ６内の成形品８から離れた退避位置に移動させる（図２（ｄ））。   In the second step, after completion of the first step, the cavity piece 11 at the injection molding position is moved to a retracted position away from the molded product 8 in the cavity 6 (FIG. 2 (d)).

第３工程は、流路切換弁２２を作動させ、キャビティ駒１１が退避位置に移動して生じたガイド穴１２の空間１２ａと可塑化用流体供給装置２１とを流路（内部流路１８及び外部流路２０）を介して接続し、ガイド穴１２の空間１２ａに可塑化用流体２４を導入する（図２（ｅ））。   In the third step, the flow path switching valve 22 is operated to move the space 12a of the guide hole 12 generated by the cavity piece 11 to the retracted position and the plasticizing fluid supply device 21 through the flow paths (internal flow path 18 and The plasticizing fluid 24 is introduced into the space 12a of the guide hole 12 by connecting via the external flow path 20) (FIG. 2 (e)).

第４工程は、可塑化用流体２４が導入されたガイド穴１２の空間１２ａに対向する成形品８の表面を、ガイド穴１２の空間１２ａ内の可塑化用流体２４で可塑化する（図２（ｆ））。   In the fourth step, the surface of the molded product 8 facing the space 12a of the guide hole 12 into which the plasticizing fluid 24 is introduced is plasticized with the plasticizing fluid 24 in the space 12a of the guide hole 12 (FIG. 2). (F)).

第５工程は、第４工程終了後に、退避位置のキャビティ駒１１をキャビティ６内の成形品８に向けて移動させ、キャビティ駒１１の先端１１ｂをキャビティ６内の成形品８の可塑化された表面に押し当て、キャビティ駒１１の先端１１ｂに形成された微細形状を成形品８の可塑化された表面に転写する（図３（ａ））。これにより、成形品８への微細形状転写成形が完了する。   In the fifth step, after completion of the fourth step, the cavity piece 11 in the retracted position is moved toward the molded product 8 in the cavity 6, and the tip 11 b of the cavity piece 11 is plasticized of the molded product 8 in the cavity 6. The fine shape formed at the tip 11b of the cavity piece 11 is transferred to the plasticized surface of the molded product 8 by pressing against the surface (FIG. 3 (a)). Thereby, the fine shape transfer molding to the molded product 8 is completed.

次に、第５工程終了後、キャビティ駒１１は、退避位置に移動させられる（図３（ｂ））。   Next, after completion of the fifth step, the cavity piece 11 is moved to the retracted position (FIG. 3B).

次に、キャビティ駒１１が退避位置に移動して生じたガイド穴１２の空間１２ａは、流路切換弁２２によって大気開放され、内部の可塑化用流体２４が排出される（図３（ｂ）、図３（ｃ））。   Next, the space 12a of the guide hole 12 generated by moving the cavity piece 11 to the retracted position is opened to the atmosphere by the flow path switching valve 22, and the internal plasticizing fluid 24 is discharged (FIG. 3B). FIG. 3 (c)).

次に、キャビティ駒１１及びエジェクタピン１３は、微細形状転写成形金型１が型開きした後（可動側金型２が固定側金型４から離れた後）、先端１１ｂ，１３ｂがキャビティ６内に押し込まれ、キャビティ６内の成形品８をキャビティ６外に押し出す（図３（ｄ））。これにより、微細形状が転写された成形品８は、微細形状転写成形金型１から取り出される。   Next, the cavity piece 11 and the ejector pin 13 are arranged so that the tips 11b and 13b are inside the cavity 6 after the fine shape transfer molding die 1 is opened (after the movable die 2 is separated from the fixed die 4). The molded product 8 in the cavity 6 is pushed out of the cavity 6 (FIG. 3D). Thereby, the molded product 8 to which the fine shape is transferred is taken out from the fine shape transfer molding die 1.

以上のような本実施形態に係る微細形状転写成形方法の１によれば、通常の射出成形（充填、保圧、冷却）後に、キャビティ６内の成形品８の表面を可塑化用流体で可塑化し、その可塑化した成形品８の表面にキャビティ駒１１の先端１１ｂを押し付け、キャビティ駒１１の先端１１ｂの微細形状を成形品８の表面に転写するため、射出成形のプロセス（ワンプロセス）で微細形状の転写成形が可能になる。その結果、本実施形態に係る微細形状転写成形方法の１は、第１の成形プロセスと第２の成形プロセスとで樹脂板１１１の表面に微細形状を転写する従来技術と比較し（図２０参照）、微細形状を成形品の表面に高精度に且つ高効率に転写することが可能になると共に、生産の自動化を可能にし、生産コストを低減することが可能になる。   According to the fine shape transfer molding method 1 according to the present embodiment as described above, the surface of the molded product 8 in the cavity 6 is plasticized with a plasticizing fluid after normal injection molding (filling, holding pressure, cooling). In order to press the tip 11b of the cavity piece 11 against the surface of the plasticized molded product 8 and transfer the fine shape of the tip 11b of the cavity piece 11 to the surface of the molded product 8, an injection molding process (one process) Fine shape transfer molding becomes possible. As a result, the fine shape transfer molding method 1 according to the present embodiment is compared with the conventional technique in which the fine shape is transferred to the surface of the resin plate 111 by the first molding process and the second molding process (see FIG. 20). ), It is possible to transfer the fine shape onto the surface of the molded product with high accuracy and high efficiency, and it is possible to automate the production and reduce the production cost.

また、本実施形態に係る微細形状転写成形方法の１は、通常の射出成形で成形された成形品の表面を可塑化用流体で可塑化するようになっており、高温の溶融樹脂に可塑化用流体を含浸させるようになっていないため、可塑化用流体の排気時等における減圧時に、成形品の表面に気泡（発泡現象）が生じにくい。その結果、本実施形態に係る微細形状転写成形方法の１は、気泡の発生に起因する品質低下を防止でき、高品質で高精度の光学素子を生産することが可能になる。   Further, in the fine shape transfer molding method 1 according to the present embodiment, the surface of a molded product molded by normal injection molding is plasticized with a plasticizing fluid, and plasticized into a high-temperature molten resin. Since the working fluid is not impregnated, bubbles (foaming phenomenon) are unlikely to occur on the surface of the molded product during decompression of the plasticizing fluid during exhaust. As a result, the fine shape transfer molding method 1 according to the present embodiment can prevent deterioration in quality due to the generation of bubbles, and can produce a high-quality and high-precision optical element.

また、本実施形態に係る微細形状転写成形方法の１は、金型の加熱冷却制御が不要になるため、金型に複雑な温度調節回路を設置する必要がなく、金型構造を簡単化することが可能になる。   In addition, in the fine shape transfer molding method 1 according to the present embodiment, since heating and cooling control of the mold is unnecessary, it is not necessary to install a complicated temperature control circuit in the mold, and the mold structure is simplified. It becomes possible.

（微細形状転写成形方法の２）
図４（ａ）〜（ｆ）及び図５（ａ）〜（ｄ）は、本実施形態に係る微細形状転写成形金型１を使用した微細形状転写成形方法の２の工程から成形品８の取り出しまでを時系列で示す図である。この微細形状転写成形方法の２は、可塑化用流体として、二酸化炭素ガスを圧縮することにより生じる液体の二酸化炭素が使用される。なお、この微細形状転写成形方法の２の説明は、微細形状転写成形方法の１の説明と重複する部分を適宜省略し、微細形状転写成形方法の１と相違する部分を詳述する。 (2 of micro shape transfer molding method)
4 (a) to 4 (f) and FIGS. 5 (a) to 5 (d) show the molded product 8 from the second step of the fine shape transfer molding method using the fine shape transfer molding die 1 according to this embodiment. It is a figure which shows until extraction in time series. In the fine shape transfer molding method 2, liquid carbon dioxide generated by compressing carbon dioxide gas is used as a plasticizing fluid. In addition, in the description of 2 of the fine shape transfer molding method, a portion overlapping with the description of 1 of the fine shape transfer molding method is omitted as appropriate, and a portion different from 1 of the fine shape transfer molding method will be described in detail.

この微細形状転写成形方法の２において、第１工程は、図４（ａ）〜（ｃ）で表してあり、図２（ａ）〜（ｃ）までと同様である。   In the fine shape transfer molding method 2, the first step is represented by FIGS. 4A to 4C and is the same as FIGS. 2A to 2C.

第２工程は、図４（ｄ）で表してあり、図２（ｄ）と同様である。   The second step is shown in FIG. 4 (d) and is the same as FIG. 2 (d).

第３工程は、流路切換弁２２を作動させ、キャビティ駒１１が退避位置に移動して生じたガイド穴１２の空間１２ａと気体供給装置２１Ａとを流路（内部流路１８及び外部流路２０）を介して接続し、ガイド穴１２の空間１２ａに二酸化炭素ガス２４ａを導入する（図４（ｅ））。   In the third step, the flow path switching valve 22 is operated to move the space 12a of the guide hole 12 generated by the movement of the cavity piece 11 to the retracted position and the gas supply device 21A through the flow path (the internal flow path 18 and the external flow path). 20), carbon dioxide gas 24a is introduced into the space 12a of the guide hole 12 (FIG. 4E).

第４工程は、ガイド穴１２の空間１２ａに導入された二酸化炭素ガス２４ａをキャビティ駒１１で圧縮し（等温圧縮し）、二酸化炭素ガス２４ａの一部を液化し（気液混合状態にし）、二酸化炭素ガス２４ａが導入されたガイド穴１２の空間１２ａに対向する成形品８の表面を、液化した二酸化炭素（液体の二酸化炭素）で可塑化する（図４（ｆ））。   In the fourth step, the carbon dioxide gas 24a introduced into the space 12a of the guide hole 12 is compressed by the cavity piece 11 (isothermally compressed), and a part of the carbon dioxide gas 24a is liquefied (in a gas-liquid mixed state), The surface of the molded product 8 facing the space 12a of the guide hole 12 into which the carbon dioxide gas 24a has been introduced is plasticized with liquefied carbon dioxide (liquid carbon dioxide) (FIG. 4 (f)).

第５工程は、第４工程終了後に、キャビティ駒１１をキャビティ６内の成形品８に向けて移動させ、キャビティ駒１１の先端１１ｂをキャビティ６内の成形品８の可塑化された表面に押し当て、キャビティ駒１１の先端１１ｂに形成された微細形状を成形品８の可塑化された表面に転写する（図５（ａ））。これにより、成形品８への微細形状転写成形が完了する。   In the fifth step, after completion of the fourth step, the cavity piece 11 is moved toward the molded product 8 in the cavity 6, and the tip 11 b of the cavity piece 11 is pushed against the plasticized surface of the molded product 8 in the cavity 6. The fine shape formed on the tip 11b of the cavity piece 11 is transferred to the plasticized surface of the molded product 8 (FIG. 5A). Thereby, the fine shape transfer molding to the molded product 8 is completed.

次に、第５工程終了後、キャビティ駒１１は、退避位置に移動させられる（図５（ｂ））。   Next, after completion of the fifth step, the cavity piece 11 is moved to the retracted position (FIG. 5B).

次に、キャビティ駒１１が退避位置に移動して生じたガイド穴１２の空間１２ａは、流路切換弁２２によって大気開放され、内部の二酸化炭素ガス２４ａが排出される（図５（ｂ）、図５（ｃ））。   Next, the space 12a of the guide hole 12 generated by moving the cavity piece 11 to the retracted position is opened to the atmosphere by the flow path switching valve 22, and the internal carbon dioxide gas 24a is discharged (FIG. 5B). FIG. 5 (c)).

次に、キャビティ駒１１及びエジェクタピン１３は、微細形状転写成形金型１が型開きした後（可動側金型２が固定側金型４から離れた後）、先端１１ｂ，１３ｂがキャビティ６内に押し込まれ、キャビティ６内の成形品８をキャビティ６外に押し出す（図５（ｄ））。これにより、微細形状が転写された成形品８は、微細形状転写成形金型１から取り出される。   Next, the cavity piece 11 and the ejector pin 13 are arranged so that the tips 11b and 13b are inside the cavity 6 after the fine shape transfer molding die 1 is opened (after the movable die 2 is separated from the fixed die 4). The molded product 8 in the cavity 6 is pushed out of the cavity 6 (FIG. 5D). Thereby, the molded product 8 to which the fine shape is transferred is taken out from the fine shape transfer molding die 1.

以上のような微細形状転写成形方法の２によれば、上述の微細形状転写成形方法の１と同様の効果を得ることができる。   According to 2 of the fine shape transfer molding method as described above, the same effect as that of 1 of the fine shape transfer molding method described above can be obtained.

（微細形状転写成形方法の３）
図６（ａ）〜（ｆ）及び図７（ａ）〜（ｄ）は、本実施形態に係る微細形状転写成形金型１を使用した微細形状転写成形方法の３の工程から成形品の取り出しまでを時系列で示す図である。この微細形状転写成形方法の３は、可塑化用流体として、液体二酸化炭素、又は超臨界二酸化炭素が使用される。なお、この微細形状転写成形方法の３の説明は、微細形状転写成形方法の１の説明と重複する部分を適宜省略し、微細形状転写成形方法の１と相違する部分を詳述する。 (3 of fine shape transfer molding method)
6 (a) to 6 (f) and FIGS. 7 (a) to 7 (d) are views of taking out a molded product from step 3 of the fine shape transfer molding method using the fine shape transfer molding die 1 according to the present embodiment. It is a figure which shows until in time series. In this fine shape transfer molding method 3, liquid carbon dioxide or supercritical carbon dioxide is used as a plasticizing fluid. In the description of 3 of the fine shape transfer molding method, a portion overlapping with the description of 1 of the fine shape transfer molding method is omitted as appropriate, and a portion different from 1 of the fine shape transfer molding method will be described in detail.

この微細形状転写成形方法の３において、第１工程は、図６（ａ）〜（ｃ）で表してあり、図２（ａ）〜（ｃ）までと同様である。   In 3 of this fine shape transfer molding method, the first step is represented by FIGS. 6A to 6C and is the same as FIGS. 2A to 2C.

第２工程は、図６（ｄ）で表してあり、図２（ｄ）と同様である。   The second step is shown in FIG. 6 (d) and is the same as FIG. 2 (d).

第３工程は、図６（ｅ）で表してあり、図２（ｅ）と同様である。   The third step is shown in FIG. 6 (e) and is the same as FIG. 2 (e).

第４工程は、図６（ｆ）で表してあり、図２（ｆ）と同様に、成形品の表面を可塑化する。   A 4th process is represented by FIG.6 (f), and plasticizes the surface of a molded article similarly to FIG.2 (f).

次に、第４工程の終了後、ガイド穴１２の空間１２ａは、流路切換弁２２によって大気開放され、内部の可塑化用流体２４が排出される（図７（ａ））。   Next, after the end of the fourth step, the space 12a of the guide hole 12 is opened to the atmosphere by the flow path switching valve 22, and the plasticizing fluid 24 inside is discharged (FIG. 7A).

第５工程は、第４工程が終了し、ガイド穴１２の空間１２ａ内の可塑化用流体２４が排出された後に、キャビティ駒１１をキャビティ６内の成形品８に向けて移動させ、キャビティ駒１１の先端１１ｂをキャビティ６内の成形品８の可塑化された表面に押し当て、キャビティ駒１１の先端１１ｂに形成された微細形状を成形品８の可塑化された表面に転写する（図７（ｂ））。これにより、成形品８への微細形状転写成形が完了する。   In the fifth step, after the fourth step is finished and the plasticizing fluid 24 in the space 12a of the guide hole 12 is discharged, the cavity piece 11 is moved toward the molded product 8 in the cavity 6, and the cavity piece 11 is pressed against the plasticized surface of the molded product 8 in the cavity 6, and the fine shape formed at the distal end 11b of the cavity piece 11 is transferred to the plasticized surface of the molded product 8 (FIG. 7). (B)). Thereby, the fine shape transfer molding to the molded product 8 is completed.

次に、第５工程終了後、キャビティ駒１１は、退避位置に移動させられる（図７（ｃ））。   Next, after completion of the fifth step, the cavity piece 11 is moved to the retracted position (FIG. 7C).

次に、キャビティ駒１１及びエジェクタピン１３は、微細形状転写成形金型１が型開きした後（可動側金型２が固定側金型４から離れた後）、先端１１ｂ，１３ｂがキャビティ６内に押し込まれ、キャビティ６内の成形品８をキャビティ６外に押し出す（図７（ｄ））。これにより、微細形状が転写された成形品８は、微細形状転写成形金型１から取り出される。   Next, the cavity piece 11 and the ejector pin 13 are arranged so that the tips 11b and 13b are inside the cavity 6 after the fine shape transfer molding die 1 is opened (after the movable die 2 is separated from the fixed die 4). The molded product 8 in the cavity 6 is pushed out of the cavity 6 (FIG. 7D). Thereby, the molded product 8 to which the fine shape is transferred is taken out from the fine shape transfer molding die 1.

以上のような微細形状転写成形方法の３によれば、上述の微細形状転写成形方法の１と同様の効果を得ることができる。   According to the fine shape transfer molding method 3 as described above, the same effect as that of the fine shape transfer molding method 1 described above can be obtained.

（微細形状転写成形方法の４）
図８（ａ）〜（ｆ）及び図９（ａ）〜（ｄ）は、本実施形態に係る微細形状転写成形金型１を使用した微細形状転写成形方法の４の工程から成形品の取り出しまでを時系列で示す図である。この微細形状転写成形方法の４は、可塑化用流体として、二酸化炭素ガスを圧縮することにより生じる液体の二酸化炭素が使用される。なお、この微細形状転写成形方法の４の説明は、微細形状転写成形方法の１の説明と重複する部分を適宜省略し、微細形状転写成形方法の１と相違する部分を詳述する。 (4 of fine shape transfer molding method)
8 (a) to 8 (f) and FIGS. 9 (a) to 9 (d) are drawings for taking out a molded product from the four steps of the fine shape transfer molding method using the fine shape transfer molding die 1 according to the present embodiment. It is a figure which shows until in time series. In the fine shape transfer molding method 4, liquid carbon dioxide generated by compressing carbon dioxide gas is used as a plasticizing fluid. In the description of 4 of the fine shape transfer molding method, a portion overlapping with the description of 1 of the fine shape transfer molding method is omitted as appropriate, and a portion different from 1 of the fine shape transfer molding method will be described in detail.

この微細形状転写成形方法の４において、第１工程は、図８（ａ）〜（ｃ）で表してあり、図２（ａ）〜（ｃ）までと同様である。   In this fine shape transfer molding method 4, the first step is represented by FIGS. 8A to 8C and is the same as FIGS. 2A to 2C.

第２工程は、図８（ｄ）で表してあり、図２（ｄ）と同様である。   The second step is shown in FIG. 8D and is the same as FIG.

第３工程は、図８（ｅ）で表してあり、流路切換弁２２を作動させ、キャビティ駒１１が退避位置に移動して生じたガイド穴１２の空間１２ａと気体供給装置２１Ａとを流路（内部流路１８及び外部流路２０）を介して接続し、ガイド穴１２の空間１２ａに二酸化炭素ガス２４ａを導入する。   The third step is shown in FIG. 8 (e), in which the flow path switching valve 22 is actuated to flow the space 12a of the guide hole 12 and the gas supply device 21A generated by moving the cavity piece 11 to the retracted position. The carbon dioxide gas 24a is introduced into the space 12a of the guide hole 12 by connecting through the passages (the internal flow path 18 and the external flow path 20).

第４工程は、ガイド穴１２の空間１２ａに導入された二酸化炭素ガス２４ａをキャビティ駒１１で圧縮し（等温圧縮し）、二酸化炭素ガス２４ａの一部を液化し（気液混合状態にし）、二酸化炭素ガス２４ａが導入されたガイド穴１２の空間１２ａに対向する成形品８の表面を、液化した二酸化炭素（液体の二酸化炭素）で可塑化する（図８（ｆ））。   In the fourth step, the carbon dioxide gas 24a introduced into the space 12a of the guide hole 12 is compressed by the cavity piece 11 (isothermally compressed), and a part of the carbon dioxide gas 24a is liquefied (in a gas-liquid mixed state), The surface of the molded product 8 facing the space 12a of the guide hole 12 into which the carbon dioxide gas 24a has been introduced is plasticized with liquefied carbon dioxide (liquid carbon dioxide) (FIG. 8 (f)).

次に、第４工程の終了後、ガイド穴１２の空間１２ａは、流路切換弁２２によって大気開放され、内部の二酸化炭素ガス２４ａが排出される（図９（ａ））。   Next, after completion of the fourth step, the space 12a of the guide hole 12 is opened to the atmosphere by the flow path switching valve 22, and the internal carbon dioxide gas 24a is discharged (FIG. 9A).

第５工程は、第４工程が終了し、ガイド穴１２の空間１２ａ内の二酸化炭素ガス２４ａが排出された後に、キャビティ駒１１をキャビティ６内の成形品８に向けて移動させ、キャビティ駒１１の先端１１ｂをキャビティ６内の成形品８の可塑化された表面に押し当て、キャビティ駒１１の先端１１ｂに形成された微細形状を成形品８の可塑化された表面に転写する（図９（ｂ））。これにより、成形品８への微細形状転写成形が完了する。   In the fifth step, after the fourth step is finished and the carbon dioxide gas 24a in the space 12a of the guide hole 12 is exhausted, the cavity piece 11 is moved toward the molded product 8 in the cavity 6, and the cavity piece 11 The tip 11b is pressed against the plasticized surface of the molded product 8 in the cavity 6, and the fine shape formed at the tip 11b of the cavity piece 11 is transferred to the plasticized surface of the molded product 8 (FIG. 9 ( b)). Thereby, the fine shape transfer molding to the molded product 8 is completed.

次に、第５工程終了後、キャビティ駒１１は、退避位置に移動させられる（図９（ｃ））。   Next, after completion of the fifth step, the cavity piece 11 is moved to the retracted position (FIG. 9C).

次に、キャビティ駒１１及びエジェクタピン１３は、微細形状転写成形金型１が型開きした後（可動側金型２が固定側金型４から離れた後）、先端１１ｂ，１３ｂがキャビティ６内に押し込まれ、キャビティ６内の成形品８をキャビティ６外に押し出す（図９（ｄ））。これにより、微細形状が転写された成形品８は、微細形状転写成形金型１から取り出される。   Next, the cavity piece 11 and the ejector pin 13 are arranged so that the tips 11b and 13b are inside the cavity 6 after the fine shape transfer molding die 1 is opened (after the movable die 2 is separated from the fixed die 4). The molded product 8 in the cavity 6 is pushed out of the cavity 6 (FIG. 9D). Thereby, the molded product 8 to which the fine shape is transferred is taken out from the fine shape transfer molding die 1.

以上のような微細形状転写成形方法の４によれば、上述の微細形状転写成形方法の１と同様の効果を得ることができる。   According to 4 of the fine shape transfer molding method as described above, the same effect as that of the fine shape transfer molding method 1 described above can be obtained.

［第２実施形態］
（微細形状転写成形金型）
図１０は、本発明の第２実施形態に係る微細形状転写成形金型１を示す図であり、本発明に係る微細形状転写成形方法を実施するために使用される微細形状転写成形金型１の縦断面図である。なお、本実施形態に係る微細形状転写成形金型１は、固定側金型４の構成の一部が第１実施形態に係る微細形状転写成形金型１の固定側金型４の構成と相違するが、他の構成が第１実施形態に係る微細形状転写成形金型１と同様であるため、第１実施形態に係る微細形状転写成形金型１に対応する構成部分に同一符号を付し、第１実施形態に係る微細形状転写成形金型１の説明と重複する説明を適宜省略する。 [Second Embodiment]
(Fine shape transfer mold)
FIG. 10 is a view showing a fine shape transfer molding die 1 according to the second embodiment of the present invention, and is used for carrying out the fine shape transfer molding method 1 according to the present invention. FIG. In the fine shape transfer molding die 1 according to the present embodiment, a part of the configuration of the fixed side die 4 is different from the configuration of the fixed side die 4 of the fine shape transfer molding die 1 according to the first embodiment. However, since the other configuration is the same as that of the fine shape transfer mold 1 according to the first embodiment, the same reference numerals are given to the components corresponding to the fine shape transfer mold 1 according to the first embodiment. The description overlapping with the description of the fine shape transfer molding die 1 according to the first embodiment will be omitted as appropriate.

図１０に示すように、本実施形態に係る微細形状転写成形金型１は、可動側金型２の金型本体３で、且つ金型本体３の固定側金型４に対向する面（型合わせ面）５側に、キャビティ６が形成されている。このキャビティ６は、縦断面形状が矩形形状の凹所であり、キャビティ内面７が成形品８の外観に転写されるようになっている。また、キャビティ６は、溶融樹脂（熱可塑性樹脂材料）を射出するゲート１０（例えば、サイドゲート）が開口し、第１のキャビティ駒１１の第１のガイド穴１２が開口すると共に、エジェクタピン１３のガイド穴１４が開口している。また、キャビティ６は、固定側金型４側に配置された第２のキャビティ駒２５の第２のガイド穴２６が開口している。   As shown in FIG. 10, the fine shape transfer molding die 1 according to the present embodiment is a die body 3 of a movable side mold 2 and a surface (mold) facing the fixed side mold 4 of the mold body 3. A cavity 6 is formed on the mating surface 5 side. The cavity 6 is a recess having a rectangular cross section, and the cavity inner surface 7 is transferred to the appearance of the molded product 8. In the cavity 6, a gate 10 (for example, a side gate) for injecting molten resin (thermoplastic resin material) is opened, a first guide hole 12 of the first cavity piece 11 is opened, and an ejector pin 13 is opened. The guide hole 14 is opened. The cavity 6 has a second guide hole 26 of a second cavity piece 25 arranged on the fixed mold 4 side.

第１のキャビティ駒１１は、頭部１１ａが第１駆動プレート１５に固定され、第１駆動プレート１５が操作ロッド１６を介して図外の駆動手段（例えば、油圧シリンダ）によって作動させられることにより、可動側金型２の金型本体３に形成された第１のガイド穴１２内をスライド移動する。そして、第１のキャビティ駒１１は、先端１１ｂがキャビティ内面７の一部を構成する位置（射出成形位置）から第１駆動プレート１５が可動側金型基板１７の近傍に位置するまで、第１のガイド穴１２内をスライド移動できるようになっている。ここで、第１駆動プレート１５が可動側金型基板１７の近傍に位置し、第１の内部流路（連通穴）１８がガイド穴１２の空間１２ａに開口するキャビティ駒１１の位置を、キャビティ駒１１の退避位置とする。そして、キャビティ駒１１は、退避位置にある場合、先端１１ｂがキャビティ６から十分に離れており、先端１１ｂとキャビティ６との間のガイド穴１２内に空間１２ａが形成されるようになっている。   As for the 1st cavity piece 11, the head 11a is fixed to the 1st drive plate 15, and the 1st drive plate 15 is operated by the drive means (for example, hydraulic cylinder) outside a figure via the operation rod 16. Then, it slides in the first guide hole 12 formed in the mold body 3 of the movable mold 2. The first cavity piece 11 is in a first position until the first drive plate 15 is positioned in the vicinity of the movable mold substrate 17 from the position (injection molding position) where the tip 11b constitutes a part of the cavity inner surface 7. The guide hole 12 can be slid and moved. Here, the position of the cavity piece 11 where the first drive plate 15 is located in the vicinity of the movable mold substrate 17 and the first internal flow path (communication hole) 18 opens into the space 12a of the guide hole 12 is defined as the cavity. The retreat position of the piece 11 is assumed. When the cavity piece 11 is in the retracted position, the tip 11b is sufficiently separated from the cavity 6, and a space 12a is formed in the guide hole 12 between the tip 11b and the cavity 6. .

可動側金型２の金型本体３に形成された第１のガイド穴１２は、第１のキャビティ駒１１が退避位置にある場合、空間１２ａが金型本体３に形成された第１の内部流路１８に接続され、その第１の内部流路１８に接続された外部流路２０を介して可塑化用流体供給装置２１（又は、気体供給装置２１Ａ）に接続されるようになっている。外部流路２０は、途中に流路切換弁２２が配置されている。   The first guide hole 12 formed in the mold main body 3 of the movable mold 2 has a first inner space 12a formed in the mold main body 3 when the first cavity piece 11 is in the retracted position. It is connected to the flow path 18 and is connected to the plasticizing fluid supply device 21 (or the gas supply device 21A) via the external flow path 20 connected to the first internal flow path 18. . The external flow path 20 is provided with a flow path switching valve 22 in the middle.

第２のキャビティ駒２５は、先端２５ｂがキャビティ内面７の一部を構成できるようになっており、後端の傾斜面２５ａがカム２７の傾斜面２７ａに図示しないばねで常時付勢され、第２のガイド穴２６内をカム２７によってスライド移動させられるようになっている。そして、第２のキャビティ駒２５は、射出成形時において、先端２５ｂがキャビティ内面７の一部を構成する位置（射出成形位置）に前進して保持される。また、第２のキャビティ駒２５は、固定側金型４の金型本体２８に形成された第２の内部流路（連通穴）３０が第２のガイド穴２６の空間２６ａに開口する位置（退避位置）までカム２７によって後退させられるようになっている。   The second cavity piece 25 has a tip 25b that can constitute a part of the cavity inner surface 7, and an inclined surface 25a at the rear end is always urged by an unillustrated spring on the inclined surface 27a of the cam 27, The second guide hole 26 can be slid by a cam 27. And the 2nd cavity piece 25 advances and is hold | maintained to the position (injection molding position) where the front-end | tip 25b comprises a part of cavity inner surface 7 at the time of injection molding. Further, the second cavity piece 25 has a position where a second internal flow path (communication hole) 30 formed in the mold body 28 of the fixed-side mold 4 opens into the space 26 a of the second guide hole 26 ( The cam 27 can be moved back to the retracted position.

カム２７は、油圧シリンダ３１の操作ロッド３２に固定されており、固定側金型４の金型本体２８に形成されたカム収容穴３３内を油圧シリンダ３１によってスライド移動させられるようになっている。   The cam 27 is fixed to the operation rod 32 of the hydraulic cylinder 31, and can be slid by the hydraulic cylinder 31 in the cam housing hole 33 formed in the mold body 28 of the stationary mold 4. .

固定側金型４の金型本体２８に形成された第２の内部流路３０は、流路切換弁２２と第１の内部流路１８とを接続する外部流路２０に分岐路３４を介して接続されている。   The second internal flow path 30 formed in the mold body 28 of the fixed-side mold 4 is connected to the external flow path 20 that connects the flow path switching valve 22 and the first internal flow path 18 via the branch path 34. Connected.

流路切換弁２２は、可塑化用流体供給装置２１から送り出された可塑化用流体（液体の二酸化炭素若しくは超臨界状態の二酸化炭素）、若しくは気体供給装置２１Ａから送り出された気体（二酸化炭素）を第１のガイド穴１２の空間１２ａ及び第２のガイド穴２６の空間２６ａに導入するか、又は第１のガイド穴１２の空間１２ａ及び第２のガイド穴２６の空間２６ａに導入された可塑化用流体若しくは気体を第１のガイド穴１２の空間１２ａ及び第２のガイド穴２６の空間２６ａから排出することを可能にする。   The flow path switching valve 22 is a plasticizing fluid (liquid carbon dioxide or supercritical carbon dioxide) sent from the plasticizing fluid supply device 21 or a gas (carbon dioxide) sent from the gas supply device 21A. Is introduced into the space 12a of the first guide hole 12 and the space 26a of the second guide hole 26, or the plastic is introduced into the space 12a of the first guide hole 12 and the space 26a of the second guide hole 26. It is possible to discharge the forming fluid or gas from the space 12 a of the first guide hole 12 and the space 26 a of the second guide hole 26.

また、可動側金型２の金型本体３には、キャビティ６内に出し入れされるエジェクタピン１３が配置されている。このエジェクタピン１３は、頭部１３ａが第２駆動プレート２３に固定され、第２駆動プレート２３が図外の駆動手段によって作動させられることによって、先端１３ｂがキャビティ内面７の一部を構成する位置から、先端１３ｂがキャビティ６内の成形品８をキャビティ６外へ押し出す位置まで、ガイド穴１４に沿って移動させられる。   An ejector pin 13 that is inserted into and removed from the cavity 6 is disposed in the mold body 3 of the movable mold 2. The ejector pin 13 is such that the head 13a is fixed to the second drive plate 23, and the second drive plate 23 is operated by drive means (not shown) so that the tip 13b constitutes a part of the cavity inner surface 7. The tip 13b is moved along the guide hole 14 until the tip 13b pushes the molded product 8 in the cavity 6 out of the cavity 6.

また、本実施形態に係る微細形状転写成形金型１は、可動側金型２及び固定側金型４が射出成形される樹脂材料のガラス転移温度以下の温度に管理され、加熱冷却制御が行われるようになっていない。また、本実施形態に係る微細形状転写成形金型１は、可塑化用流体が液体二酸化炭素の場合、可動側金型２及び固定側金型４が３１℃以下に温度管理される。   In addition, the fine shape transfer molding die 1 according to the present embodiment is controlled to a temperature not higher than the glass transition temperature of the resin material on which the movable side die 2 and the fixed side die 4 are injection-molded, and heating / cooling control is performed. It is not supposed to be. In the fine shape transfer molding die 1 according to this embodiment, when the plasticizing fluid is liquid carbon dioxide, the temperature of the movable side die 2 and the fixed side die 4 is controlled to 31 ° C. or lower.

（微細形状転写成形方法の１）
図１１（ａ）〜（ｆ）及び図１２（ａ）〜（ｄ）は、本実施形態に係る微細形状転写成形金型１を使用した微細形状転写成形方法の１の工程から成形品の取り出しまでを時系列で示す図である。この微細形状転写成形方法の１は、可塑化用流体として、液体二酸化炭素、又は超臨界二酸化炭素が使用される。 (1 of fine shape transfer molding method)
11 (a) to 11 (f) and FIGS. 12 (a) to 12 (d) are drawings for taking out a molded product from step 1 of the fine shape transfer molding method using the fine shape transfer molding die 1 according to this embodiment. It is a figure which shows until in time series. In this fine shape transfer molding method, liquid carbon dioxide or supercritical carbon dioxide is used as a plasticizing fluid.

この微細形状転写成形方法の１において、第１工程は、型締めした（可動側金型２と固定側金型４の型合わせ面５を突き合わせた）後に（図１１（ａ））、第１のキャビティ駒１１を第１のガイド穴１２に沿って射出成形位置まで移動させると共に、第２のキャビティ駒２５を第２のガイド穴２６に沿って射出成形位置まで移動させ（図１１（ｂ））、溶融樹脂（熱可塑性樹脂材料）を図外のゲートからキャビティ６内に射出し、キャビティ６内を保圧した後、キャビティ６内の樹脂を冷却して、成形品８を形作る（図１１（ｃ））。   In 1 of this fine shape transfer molding method, the first step is to clamp the mold (the movable side mold 2 and the fixed side mold 4 are abutted against each other) (FIG. 11A), The cavity piece 11 is moved along the first guide hole 12 to the injection molding position, and the second cavity piece 25 is moved along the second guide hole 26 to the injection molding position (FIG. 11B). ), A molten resin (thermoplastic resin material) is injected into the cavity 6 from a gate (not shown), and the pressure in the cavity 6 is maintained, and then the resin in the cavity 6 is cooled to form a molded product 8 (FIG. 11). (C)).

第２工程は、第１工程の終了後に、射出成形位置の第１のキャビティ駒１１及び第２のキャビティ駒２５を、キャビティ６内の成形品８から離れた退避位置に移動させる（図１１（ｄ））。   In the second step, after the completion of the first step, the first cavity piece 11 and the second cavity piece 25 at the injection molding position are moved to a retracted position away from the molded product 8 in the cavity 6 (FIG. 11 ( d)).

第３工程は、流路切換弁２２を作動させ、第１のキャビティ駒１１が退避位置に移動して生じた第１のガイド穴１２の空間１２ａと可塑化用流体供給装置２１とを流路（第１の内部流路１８及び外部流路２０）を介して接続し、第１のガイド穴１２の空間１２ａに可塑化用流体２４を導入すると共に、第２のキャビティ駒２５が退避位置に移動して生じた第２のガイド穴２６の空間２６ａと可塑化用流体供給装置２１とを流路（第２の内部流路３０、分岐路３４及び外部流路２０）を介して接続し、第２のガイド穴２６の空間２６ａに可塑化用流体２４を導入する（図１１（ｅ））。   In the third step, the flow path switching valve 22 is operated to move the first cavity hole 11 to the retracted position and the flow path between the space 12a of the first guide hole 12 and the plasticizing fluid supply device 21. (The first internal flow path 18 and the external flow path 20) are connected, the plasticizing fluid 24 is introduced into the space 12a of the first guide hole 12, and the second cavity piece 25 is in the retracted position. The space 26a of the second guide hole 26 generated by the movement and the plasticizing fluid supply device 21 are connected via flow paths (second internal flow path 30, branch path 34, and external flow path 20), The plasticizing fluid 24 is introduced into the space 26a of the second guide hole 26 (FIG. 11E).

第４工程は、可塑化用流体２４が導入された第１のガイド穴１２の空間１２ａに対向する成形品８の表面及び可塑化用流体２４が導入された第２のガイド穴２６の空間２６ａに対向する成形品８の表面を、第１のガイド穴１２の空間内の可塑化用流体２４及び第２のガイド穴２６の空間２６ａ内の可塑化用流体２４で可塑化する（図１１（ｆ））。   In the fourth step, the surface of the molded product 8 facing the space 12a of the first guide hole 12 into which the plasticizing fluid 24 is introduced and the space 26a of the second guide hole 26 into which the plasticizing fluid 24 is introduced. 11 is plasticized with the plasticizing fluid 24 in the space of the first guide hole 12 and the plasticizing fluid 24 in the space 26a of the second guide hole 26 (FIG. 11 ( f)).

第５工程は、第４工程終了後に、退避位置の第１のキャビティ駒１１及び第２のキャビティ駒２５をキャビティ６内の成形品８に向けて移動させ、第１のキャビティ駒１１の先端１１ｂ及び第２のキャビティ駒２５の先端２５ｂをキャビティ６内の成形品８の可塑化された表面に押し当て、第１のキャビティ駒１１の先端１１ｂ及び第２のキャビティ駒２５の先端２５ｂに形成された微細形状を成形品８の可塑化された表面に転写する（図１２（ａ））。これにより、成形品８への微細形状転写成形が完了する。   In the fifth step, after completion of the fourth step, the first cavity piece 11 and the second cavity piece 25 in the retracted position are moved toward the molded product 8 in the cavity 6, and the tip 11b of the first cavity piece 11 is moved. And the tip 25b of the second cavity piece 25 is pressed against the plasticized surface of the molded product 8 in the cavity 6 to form the tip 11b of the first cavity piece 11 and the tip 25b of the second cavity piece 25. The fine shape is transferred to the plasticized surface of the molded product 8 (FIG. 12A). Thereby, the fine shape transfer molding to the molded product 8 is completed.

次に、第５工程終了後、第１のキャビティ駒１１及び第２のキャビティ駒２５は、退避位置に移動させられる（図１２（ｂ））。   Next, after completion of the fifth step, the first cavity piece 11 and the second cavity piece 25 are moved to the retracted position (FIG. 12B).

次に、第１のキャビティ駒１１及び第２のキャビティ駒２５が退避位置に移動して生じた第１のガイド穴１２の空間１２ａ及び第２のガイド穴２６の空間２６ａは、流路切換弁２２によって大気開放され、内部の可塑化用流体２４が排出される（図１２（ｃ））。   Next, the space 12a of the first guide hole 12 and the space 26a of the second guide hole 26, which are generated when the first cavity piece 11 and the second cavity piece 25 are moved to the retracted positions, 22 is opened to the atmosphere, and the plasticizing fluid 24 inside is discharged (FIG. 12C).

次に、第１のキャビティ駒１１及びエジェクタピン１３は、微細形状転写成形金型１が型開きした後（可動側金型２が固定側金型４から離れた後）、先端１１ｂ，１３ｂがキャビティ６内に押し込まれ、キャビティ６内の成形品８をキャビティ６外に押し出す（図１２（ｄ））。これにより、微細形状が転写された成形品８は、微細形状転写成形金型１から取り出される。   Next, the first cavity piece 11 and the ejector pin 13 have the tips 11b and 13b after the fine shape transfer mold 1 is opened (after the movable mold 2 is separated from the fixed mold 4). The molded product 8 in the cavity 6 is pushed out of the cavity 6 by being pushed into the cavity 6 (FIG. 12D). Thereby, the molded product 8 to which the fine shape is transferred is taken out from the fine shape transfer molding die 1.

以上のような本実施形態に係る微細形状転写成形方法の１によれば、第１実施形態に係る微細形状転写成形方法の１と同様の効果を得ることができる。また、本実施形態に係る微細形状転写成形方法の１によれば、微細形状を成形品の表裏に同時に転写することが可能になる。   According to the fine shape transfer molding method 1 according to the present embodiment as described above, the same effects as those of the fine shape transfer molding method 1 according to the first embodiment can be obtained. Further, according to the fine shape transfer molding method 1 according to the present embodiment, it is possible to simultaneously transfer the fine shape to the front and back of the molded product.

（微細形状転写成形方法の２）
図１３（ａ）〜（ｆ）及び図１４（ａ）〜（ｄ）は、本実施形態に係る微細形状転写成形金型１を使用した微細形状転写成形方法の２の工程から成形品の取り出しまでを時系列で示す図である。この微細形状転写成形方法の２は、可塑化用流体として、二酸化炭素ガスを圧縮することにより生じる液体の二酸化炭素が使用される。なお、この微細形状転写成形方法の２の説明は、微細形状転写成形方法の１の説明と重複する部分を適宜省略し、微細形状転写成形方法の１と相違する部分を詳述する。 (2 of micro shape transfer molding method)
13 (a) to 13 (f) and FIGS. 14 (a) to 14 (d) are drawings for taking out a molded product from the second step of the fine shape transfer molding method using the fine shape transfer molding die 1 according to this embodiment. It is a figure which shows until in time series. In the fine shape transfer molding method 2, liquid carbon dioxide generated by compressing carbon dioxide gas is used as a plasticizing fluid. In addition, in the description of 2 of the fine shape transfer molding method, a portion overlapping with the description of 1 of the fine shape transfer molding method is omitted as appropriate, and a portion different from 1 of the fine shape transfer molding method will be described in detail.

この微細形状転写成形方法の２において、第１工程は、図１３（ａ）〜（ｃ）で表してあり、図１１（ａ）〜（ｃ）までと同様である。   In this fine shape transfer molding method 2, the first step is shown in FIGS. 13A to 13C and is the same as FIGS. 11A to 11C.

第２工程は、図１３（ｄ）で表してあり、図１１（ｄ）と同様である。   The second step is shown in FIG. 13 (d) and is the same as FIG. 11 (d).

第３工程は、流路切換弁２２を作動させ、第１のキャビティ駒１１が退避位置に移動して生じた第１のガイド穴１２の空間１２ａと気体供給装置２１Ａとを流路（第１の内部流路１８及び外部流路２０）を介して接続すると共に、第２のキャビティ駒２５が退避位置に移動して生じた第２のガイド穴２６の空間２６ａと気体供給装置２１Ａとを流路（第２の内部流路３０、分岐路３４、及び外部流路２０）を介して接続し、第１のガイド穴１２の空間１２ａ及び第２のガイド穴２６の空間２６ａに二酸化炭素ガス２４ａを導入する（図１３（ｅ））。   In the third step, the flow path switching valve 22 is operated, and the first cavity 12 is moved to the retracted position, and the flow path (first flow path) is formed between the space 12a of the first guide hole 12 and the gas supply device 21A. Are connected through the internal flow path 18 and the external flow path 20), and the second cavity hole 25 is moved to the retracted position and flows through the space 26a of the second guide hole 26 and the gas supply device 21A. The carbon dioxide gas 24a is connected to the space 12a of the first guide hole 12 and the space 26a of the second guide hole 26 by being connected via a path (second internal flow path 30, branching path 34, and external flow path 20). Is introduced (FIG. 13E).

第４工程は、第１のガイド穴１２の空間１２ａに導入された二酸化炭素ガス２４ａを第１のキャビティ駒１１で圧縮する（等温圧縮する）と共に、第２のガイド穴２６の空間２６ａに導入された二酸化炭素ガス２４ａを第２のキャビティ駒２５で圧縮し（等温圧縮し）、二酸化炭素ガス２４ａの一部を液化し（気液混合状態にし）、二酸化炭素ガス２４ａが導入された第１のガイド穴１２の空間１２ａ及び第２のガイド穴２６の空間２６ａに対向する成形品８の表面を、液化した二酸化炭素（液体の二酸化炭素）で可塑化する（図１３（ｆ））。   In the fourth step, the carbon dioxide gas 24a introduced into the space 12a of the first guide hole 12 is compressed (isothermally compressed) by the first cavity piece 11 and introduced into the space 26a of the second guide hole 26. The carbon dioxide gas 24a thus compressed is compressed (isothermally compressed) by the second cavity piece 25, a part of the carbon dioxide gas 24a is liquefied (in a gas-liquid mixed state), and the first carbon dioxide gas 24a is introduced. The surface of the molded product 8 facing the space 12a of the guide hole 12 and the space 26a of the second guide hole 26 is plasticized with liquefied carbon dioxide (liquid carbon dioxide) (FIG. 13 (f)).

第５工程は、第４工程終了後に、第１のキャビティ駒１１及び第２のキャビティ駒２５をキャビティ６内の成形品８に向けて移動させ、第１のキャビティ駒１１の先端１１ｂ及び第２のキャビティ駒２５の先端２５ｂをキャビティ６内の成形品８の可塑化された表面に押し当て、第１のキャビティ駒１１の先端１１ｂ及び第２のキャビティ駒２５の先端２５ｂに形成された微細形状を成形品８の可塑化された表面に転写する（図１４（ａ））。これにより、成形品８への微細形状転写成形が完了する。   In the fifth step, after completion of the fourth step, the first cavity piece 11 and the second cavity piece 25 are moved toward the molded product 8 in the cavity 6, and the tip 11 b and the second cavity piece 11 of the first cavity piece 11 are moved. The tip 25b of the cavity piece 25 is pressed against the plasticized surface of the molded product 8 in the cavity 6, and the fine shape formed on the tip 11b of the first cavity piece 11 and the tip 25b of the second cavity piece 25 is formed. Is transferred to the plasticized surface of the molded product 8 (FIG. 14A). Thereby, the fine shape transfer molding to the molded product 8 is completed.

次に、第５工程終了後、第１のキャビティ駒１１及び第２のキャビティ駒２５は、退避位置に移動させられる（図１４（ｂ））。   Next, after completion of the fifth step, the first cavity piece 11 and the second cavity piece 25 are moved to the retracted position (FIG. 14B).

次に、第１のキャビティ駒１１が退避位置に移動して生じた第１のガイド穴１２の空間１２ａ及び第２のキャビティ駒２５が退避位置に移動して生じた第２のガイド穴２６の空間２６ａは、流路切換弁２２によって大気開放され、内部の二酸化炭素ガス２４ａが排出される（図１４（ｃ））。   Next, the space 12a of the first guide hole 12 generated by moving the first cavity piece 11 to the retracted position and the second guide hole 26 generated by moving the second cavity piece 25 to the retracted position. The space 26a is opened to the atmosphere by the flow path switching valve 22, and the internal carbon dioxide gas 24a is discharged (FIG. 14 (c)).

次に、第１のキャビティ駒１１及びエジェクタピン１３は、微細形状転写成形金型１が型開きした後（可動側金型２が固定側金型４から離れた後）、先端１１ｂ，１３ｂがキャビティ６内に押し込まれ、キャビティ６内の成形品８をキャビティ６外に押し出す（図１４（ｄ））。これにより、微細形状が転写された成形品８は、微細形状転写成形金型１から取り出される。   Next, the first cavity piece 11 and the ejector pin 13 have the tips 11b and 13b after the fine shape transfer mold 1 is opened (after the movable mold 2 is separated from the fixed mold 4). It is pushed into the cavity 6 and the molded product 8 in the cavity 6 is pushed out of the cavity 6 (FIG. 14D). Thereby, the molded product 8 to which the fine shape is transferred is taken out from the fine shape transfer molding die 1.

以上のような本実施形態に係る微細形状転写成形方法の２によれば、上述の本実施形態に係る微細形状転写成形方法の１と同様の効果を得ることができる。   According to 2 of the fine shape transfer molding method according to this embodiment as described above, the same effect as that of 1 of the fine shape transfer molding method according to this embodiment described above can be obtained.

（微細形状転写成形方法の３）
図１５（ａ）〜（ｆ）及び図１６（ａ）〜（ｄ）は、本実施形態に係る微細形状転写成形金型１を使用した微細形状転写成形方法の３の工程から成形品の取り出しまでを時系列で示す図である。この微細形状転写成形方法の３は、可塑化用流体として、液体二酸化炭素、又は超臨界二酸化炭素が使用される。なお、この微細形状転写成形方法の３の説明は、微細形状転写成形方法の１の説明と重複する部分を適宜省略し、微細形状転写成形方法の１と相違する部分を詳述する。 (3 of fine shape transfer molding method)
15 (a) to 15 (f) and FIGS. 16 (a) to 16 (d) are drawings for taking out a molded product from step 3 of the fine shape transfer molding method using the fine shape transfer molding die 1 according to the present embodiment. It is a figure which shows until in time series. In this fine shape transfer molding method 3, liquid carbon dioxide or supercritical carbon dioxide is used as a plasticizing fluid. In the description of 3 of the fine shape transfer molding method, a portion overlapping with the description of 1 of the fine shape transfer molding method is omitted as appropriate, and a portion different from 1 of the fine shape transfer molding method will be described in detail.

この微細形状転写成形方法の３において、第１工程は、図１５（ａ）〜（ｃ）で表してあり、図１１（ａ）〜（ｃ）までと同様である。   In this fine shape transfer molding method 3, the first step is represented by FIGS. 15A to 15C, and is the same as FIGS. 11A to 11C.

第２工程は、図１５（ｄ）で表してあり、図１１（ｄ）と同様である。   The second step is shown in FIG. 15 (d) and is the same as FIG. 11 (d).

第３工程は、図１５（ｅ）で表してあり、図１１（ｅ）と同様である。   The third step is shown in FIG. 15 (e) and is the same as FIG. 11 (e).

第４工程は、図１５（ｆ）で表してあり、図１１（ｆ）と同様に、成形品８の表面を可塑化する。   The fourth step is shown in FIG. 15 (f), and the surface of the molded product 8 is plasticized as in FIG. 11 (f).

次に、第４工程の終了後、第１のガイド穴１２の空間１２ａ及び第２のガイド穴２６の空間２６ａは、流路切換弁２２によって大気開放され、内部の可塑化用流体２４が排出される（図１６（ａ））。   Next, after completion of the fourth step, the space 12a of the first guide hole 12 and the space 26a of the second guide hole 26 are opened to the atmosphere by the flow path switching valve 22, and the plasticizing fluid 24 inside is discharged. (FIG. 16A).

第５工程は、第４工程が終了し、第１のガイド穴１２の空間１２ａ内及び第２のガイド穴２６の空間２６ａ内の可塑化用流体２４が排出された後に、第１のキャビティ駒１１及び第２のキャビティ駒２５をキャビティ６内の成形品８に向けて移動させ、第１のキャビティ駒１１の先端１１ｂ及び第２のキャビティ駒２５の先端２５ｂをキャビティ６内の成形品８の可塑化された表面に押し当て、第１のキャビティ駒１１の先端１１ｂ及び第２のキャビティ駒２５の先端２５ｂに形成された微細形状を成形品８の可塑化された表面に転写する（図１６（ｂ））。これにより、成形品８への微細形状転写成形が完了する。   In the fifth step, after the fourth step is finished and the plasticizing fluid 24 in the space 12a of the first guide hole 12 and the space 26a of the second guide hole 26 is discharged, the first cavity piece 11 and the second cavity piece 25 are moved toward the molded product 8 in the cavity 6, and the tip 11 b of the first cavity piece 11 and the tip 25 b of the second cavity piece 25 are moved to the molded product 8 in the cavity 6. The fine shape formed on the tip 11b of the first cavity piece 11 and the tip 25b of the second cavity piece 25 is transferred to the plasticized surface of the molded article 8 by pressing against the plasticized surface (FIG. 16). (B)). Thereby, the fine shape transfer molding to the molded product 8 is completed.

次に、第５工程終了後、第１のキャビティ駒１１及び第２のキャビティ駒２５は、退避位置に移動させられる（図１６（ｃ））。   Next, after completion of the fifth step, the first cavity piece 11 and the second cavity piece 25 are moved to the retracted position (FIG. 16C).

次に、第１のキャビティ駒１１及びエジェクタピン１３は、微細形状転写成形金型１が型開きした後（可動側金型２が固定側金型４から離れた後）、先端１１ｂ，１３ｂがキャビティ６内に押し込まれ、キャビティ６内の成形品８をキャビティ６外に押し出す（図１６（ｄ））。これにより、微細形状が転写された成形品８は、微細形状転写成形金型１から取り出される。   Next, the first cavity piece 11 and the ejector pin 13 have the tips 11b and 13b after the fine shape transfer mold 1 is opened (after the movable mold 2 is separated from the fixed mold 4). The molded product 8 in the cavity 6 is pushed out of the cavity 6 by being pushed into the cavity 6 (FIG. 16D). Thereby, the molded product 8 to which the fine shape is transferred is taken out from the fine shape transfer molding die 1.

以上のような本実施形態に係る微細形状転写成形方法の３によれば、上述の本実施形態に係る微細形状転写成形方法の１と同様の効果を得ることができる。   According to 3 of the fine shape transfer molding method according to this embodiment as described above, the same effect as that of 1 of the fine shape transfer molding method according to this embodiment described above can be obtained.

（微細形状転写成形方法の４）
図１７（ａ）〜（ｆ）及び図１８（ａ）〜（ｄ）は、本実施形態に係る微細形状転写成形金型１を使用した微細形状転写成形方法の４の工程から成形品の取り出しまでを時系列で示す図である。この微細形状転写成形方法の４は、可塑化用流体として、二酸化炭素ガスを圧縮することにより生じる液体の二酸化炭素が使用される。なお、この微細形状転写成形方法の４の説明は、微細形状転写成形方法の１の説明と重複する部分を適宜省略し、微細形状転写成形方法の１と相違する部分を詳述する。 (4 of fine shape transfer molding method)
17 (a) to 17 (f) and FIGS. 18 (a) to 18 (d) are drawings of a molded product from the four steps of the fine shape transfer molding method using the fine shape transfer molding die 1 according to the present embodiment. It is a figure which shows until in time series. In the fine shape transfer molding method 4, liquid carbon dioxide generated by compressing carbon dioxide gas is used as a plasticizing fluid. In the description of 4 of the fine shape transfer molding method, a portion overlapping with the description of 1 of the fine shape transfer molding method is omitted as appropriate, and a portion different from 1 of the fine shape transfer molding method will be described in detail.

この微細形状転写成形方法の４において、第１工程は、図１７（ａ）〜（ｃ）で表してあり、図１１（ａ）〜（ｃ）までと同様である。   In 4 of this fine shape transfer molding method, the first step is represented by FIGS. 17A to 17C and is the same as FIGS. 11A to 11C.

第２工程は、図１７（ｄ）で表してあり、図１１（ｄ）と同様である。   The second step is shown in FIG. 17 (d) and is the same as FIG. 11 (d).

第３工程は、図１７（ｅ）で表してあり、流路切換弁２２を作動させ、第１のキャビティ駒１１が退避位置に移動して生じた第１のガイド穴１２の空間１２ａと気体供給装置２１Ａとを流路（第１の内部流路１８及び外部流路２０）を介して接続すると共に、第２のキャビティ駒２５が退避位置に移動して生じた第２のガイド穴２６の空間２６ａと気体供給装置２１Ａとを流路（第２の内部流路３０、分岐路３４、及び外部流路２０）を介して接続し、第１のガイド穴１２の空間１２ａ及び第２のガイド穴２６の空間２６ａに二酸化炭素ガス２４ａを導入する。   The third step is shown in FIG. 17 (e), and the flow path switching valve 22 is actuated to move the first cavity piece 11 to the retracted position and the space 12 a of the first guide hole 12 and the gas. The second guide hole 26 generated when the second cavity piece 25 is moved to the retracted position is connected to the supply device 21A via the flow path (the first internal flow path 18 and the external flow path 20). The space 26a and the gas supply device 21A are connected via a flow path (second internal flow path 30, branching path 34, and external flow path 20), and the space 12a of the first guide hole 12 and the second guide are connected. Carbon dioxide gas 24 a is introduced into the space 26 a of the hole 26.

第４工程は、第１のガイド穴１２の空間１２ａに導入された二酸化炭素ガス２４ａを第１のキャビティ駒１１で圧縮する（等温圧縮する）と共に、第２のガイド穴２６の空間２６ａに導入された二酸化炭素ガス２４ａを第２のキャビティ駒２５で圧縮し（等温圧縮し）、二酸化炭素ガス２４ａの一部を液化し（気液混合状態にし）、二酸化炭素ガス２４ａが導入された第１のガイド穴１２の空間１２ａ及び第２のガイド穴２６の空間２６ａに対向する成形品８の表面を、液化した二酸化炭素（液体の二酸化炭素）で可塑化する（図１７（ｆ））。   In the fourth step, the carbon dioxide gas 24a introduced into the space 12a of the first guide hole 12 is compressed (isothermally compressed) by the first cavity piece 11 and introduced into the space 26a of the second guide hole 26. The carbon dioxide gas 24a thus compressed is compressed (isothermally compressed) by the second cavity piece 25, a part of the carbon dioxide gas 24a is liquefied (in a gas-liquid mixed state), and the first carbon dioxide gas 24a is introduced. The surface of the molded product 8 facing the space 12a of the guide hole 12 and the space 26a of the second guide hole 26 is plasticized with liquefied carbon dioxide (liquid carbon dioxide) (FIG. 17 (f)).

次に、第４工程の終了後、第１のキャビティ駒１１が退避位置に移動して生じた第１のガイド穴１２の空間１２ａ及び第２のキャビティ駒２５が退避位置に移動して生じた第２のガイド穴２６の空間２６ａは、流路切換弁２２によって大気開放され、内部の二酸化炭素ガス２４ａが排出される（図１８（ａ））。   Next, after the completion of the fourth step, the space 12a of the first guide hole 12 and the second cavity piece 25 generated by moving the first cavity piece 11 to the retracted position are moved to the retracted position. The space 26a of the second guide hole 26 is opened to the atmosphere by the flow path switching valve 22, and the internal carbon dioxide gas 24a is discharged (FIG. 18 (a)).

第５工程は、第４工程が終了し、第１のガイド穴１２の空間１２ａ内及び第２のガイド穴２６の空間２６ａ内の二酸化炭素ガス２４ａが排出された後に、第１のキャビティ駒１１及び第２のキャビティ駒２５をキャビティ６内の成形品８に向けて移動させ、第１のキャビティ駒１１の先端１１ｂ及び第２のキャビティ駒２５の先端２５ｂをキャビティ６内の成形品８の可塑化された表面に押し当て、第１のキャビティ駒１１の先端１１ｂ及び第２のキャビティ駒２５の先端２５ｂに形成された微細形状を成形品８の可塑化された表面に転写する（図１８（ｂ））。これにより、成形品８への微細形状転写成形が完了する。   In the fifth step, after the fourth step is finished and the carbon dioxide gas 24a in the space 12a of the first guide hole 12 and the space 26a of the second guide hole 26 is discharged, the first cavity piece 11 And the second cavity piece 25 is moved toward the molded product 8 in the cavity 6, and the tip 11 b of the first cavity piece 11 and the tip 25 b of the second cavity piece 25 are plasticized of the molded product 8 in the cavity 6. The fine shape formed on the tip 11b of the first cavity piece 11 and the tip 25b of the second cavity piece 25 is transferred to the plasticized surface of the molded product 8 (FIG. 18 ( b)). Thereby, the fine shape transfer molding to the molded product 8 is completed.

次に、第５工程終了後、第１のキャビティ駒１１及び第２のキャビティ駒２５は、退避位置に移動させられる（図１８（ｃ））。   Next, after the fifth step, the first cavity piece 11 and the second cavity piece 25 are moved to the retracted position (FIG. 18C).

次に、第１のキャビティ駒１１及びエジェクタピン１３は、微細形状転写成形金型１が型開きした後（可動側金型２が固定側金型４から離れた後）、先端１１ｂ，１３ｂがキャビティ６内に押し込まれ、キャビティ６内の成形品８をキャビティ６外に押し出す（図１８（ｄ））。これにより、微細形状が転写された成形品８は、微細形状転写成形金型１から取り出される。   Next, the first cavity piece 11 and the ejector pin 13 have the tips 11b and 13b after the fine shape transfer mold 1 is opened (after the movable mold 2 is separated from the fixed mold 4). The molded product 8 in the cavity 6 is pushed out of the cavity 6 by being pushed into the cavity 6 (FIG. 18D). Thereby, the molded product 8 to which the fine shape is transferred is taken out from the fine shape transfer molding die 1.

以上のような本実施形態に係る微細形状転写成形方法の４によれば、上述の本実施形態に係る微細形状転写成形方法の１と同様の効果を得ることができる。   According to 4 of the fine shape transfer molding method according to this embodiment as described above, the same effect as that of 1 of the fine shape transfer molding method according to this embodiment described above can be obtained.

なお、本実施形態に係る微細形状転写成形金型１は、可動側金型２に配置したキャビティ駒１１と固定側金型４に配置したキャビティ駒２５とによって、成形品８の２箇所に微細形状を転写するようになっているが、成形品８の３箇所以上の複数箇所に微細形状を転写できるようにしてもよい。   Note that the fine shape transfer molding die 1 according to the present embodiment is minutely formed at two locations on the molded product 8 by the cavity piece 11 arranged on the movable die 2 and the cavity piece 25 arranged on the fixed die 4. Although the shape is transferred, the fine shape may be transferred to a plurality of three or more locations of the molded product 8.

［第１実施形態及び第２実施形態の変形例］
本発明に係る微細形状転写成形方法及び微細形状転写成形金型１は、可塑化用流体として、液体の二酸化炭素及び超臨界状態の二酸化炭素の他に、液化エタン、液化プロパン、超臨界エタン、超臨界プロパン等が使用される。また、本発明に係る微細形状転写成形方法及び微細形状転写成形金型１は、気体として、二酸化炭素ガスの他に、エタンガス、プロパンガス等が使用される。 [Modifications of First Embodiment and Second Embodiment]
The fine shape transfer molding method and the fine shape transfer molding die 1 according to the present invention include, as a plasticizing fluid, in addition to liquid carbon dioxide and supercritical carbon dioxide, liquefied ethane, liquefied propane, supercritical ethane, Supercritical propane or the like is used. In addition, the fine shape transfer molding method and the fine shape transfer molding die 1 according to the present invention use ethane gas, propane gas, or the like in addition to carbon dioxide gas as a gas.

１……微細形状転写成形金型（金型）、３……金型本体、６……キャビティ、８……成形品、１１……キャビティ駒、１１ｂ……先端、１２……ガイド穴、１２ａ……空間、１８……内部流路、２０……外部流路、２１……可塑化用流体供給装置、２１Ａ……気体供給装置、２４……可塑化用流体、２４ａ……気体   DESCRIPTION OF SYMBOLS 1 ... Fine shape transfer molding die (mold), 3 ... Mold body, 6 ... Cavity, 8 ... Molded product, 11 ... Cavity piece, 11b ... Tip, 12 ... Guide hole, 12a ... Space, 18 ... Internal flow path, 20 ... External flow path, 21 ... Plasticizing fluid supply device, 21A ... Gas supply device, 24 ... Plasticizing fluid, 24a ... Gas

Claims (11)

金型のキャビティ内に溶融樹脂を射出し、キャビティ内の溶融樹脂を保圧した状態で冷却して成形品を形作る第１工程と、
前記第１工程の終了後に、前記金型内に移動可能に配置され且つ前記キャビティの一部を構成するキャビティ駒を前記キャビティの前記成形品から離れた退避位置へ移動させる第２工程と、
前記キャビティ駒が移動して生じた前記金型内の空間に可塑化用流体を導入する第３工程と、
前記可塑化用流体が導入された前記空間に対向する前記成形品の表面を、前記可塑化用流体で可塑化する第４工程と、
前記第４工程の終了後に、前記退避位置の前記キャビティ駒を前記キャビティ内の前記成形品へ向けて移動させ、前記キャビティ駒の先端を前記キャビティ内の前記成形品の可塑化した表面に押し当て、前記キャビティ駒の先端に形成された微細形状を前記成形品の可塑化した表面に転写する第５工程と、
を備えたことを特徴とする微細形状転写成形方法。 A first step of injecting molten resin into the cavity of the mold, cooling the molten resin in the cavity while holding the shape, and forming a molded product;
A second step of moving a cavity piece, which is movably disposed in the mold and forms a part of the cavity, to a retracted position away from the molded product of the cavity after the completion of the first step;
A third step of introducing a plasticizing fluid into a space in the mold generated by the movement of the cavity piece;
A fourth step of plasticizing the surface of the molded article facing the space into which the plasticizing fluid is introduced with the plasticizing fluid;
After the completion of the fourth step, the cavity piece in the retracted position is moved toward the molded product in the cavity, and the tip of the cavity piece is pressed against the plasticized surface of the molded product in the cavity, A fifth step of transferring the fine shape formed at the tip of the cavity piece to the plasticized surface of the molded article;
A fine shape transfer molding method comprising: 前記第４工程と前記第５工程との間において、前記空間内の前記可塑化用流体を排出する、
ことを特徴とする請求項１に記載の微細形状転写成形方法。 Discharging the plasticizing fluid in the space between the fourth step and the fifth step;
The fine shape transfer molding method according to claim 1. 前記第５工程終了後に、前記空間内の前記可塑化用流体を排出する、
ことを特徴とする請求項１に記載の微細形状転写成形方法。 After the fifth step, the plasticizing fluid in the space is discharged.
The fine shape transfer molding method according to claim 1. 前記可塑化用流体が液体の二酸化炭素である、
ことを特徴とする請求項１乃至３のいずれかに記載の微細形状転写成形方法。 The plasticizing fluid is liquid carbon dioxide;
The fine shape transfer molding method according to any one of claims 1 to 3. 前記可塑化用流体が超臨界状態の二酸化炭素である、
ことを特徴とする請求項１乃至３のいずれかに記載の微細形状転写成形方法。 The plasticizing fluid is carbon dioxide in a supercritical state,
The fine shape transfer molding method according to any one of claims 1 to 3. 金型のキャビティ内に溶融樹脂を射出し、キャビティ内の溶融樹脂を保圧した状態で冷却して成形品を形作る第１工程と、
前記第１工程の終了後に、前記金型内に移動可能に配置され且つ前記キャビティの一部を構成するキャビティ駒を前記キャビティの前記成形品から離れた退避位置へ移動させる第２工程と、
前記キャビティ駒が移動して生じた前記金型内の空間に気体を導入する第３工程と、
前記気体が導入された前記空間に対向する前記成形品の表面を、前記気体を圧縮して生じた可塑化用流体で可塑化する第４工程と、
前記第４工程の終了後に、前記退避位置の前記キャビティ駒を前記キャビティ内の前記成形品へ向けて移動させ、前記キャビティ駒の先端を前記キャビティ内の前記成形品の可塑化した表面に押し当て、前記キャビティ駒の先端に形成された微細形状を前記成形品の可塑化した表面に転写する第５工程と、
を備えたことを特徴とする微細形状転写成形方法。 A first step of injecting molten resin into the cavity of the mold, cooling the molten resin in the cavity while holding the shape, and forming a molded product;
A second step of moving a cavity piece, which is movably disposed in the mold and forms a part of the cavity, to a retracted position away from the molded product of the cavity after the completion of the first step;
A third step of introducing gas into the space in the mold generated by the movement of the cavity piece;
A fourth step of plasticizing the surface of the molded article facing the space into which the gas has been introduced with a plasticizing fluid generated by compressing the gas;
After the completion of the fourth step, the cavity piece in the retracted position is moved toward the molded product in the cavity, and the tip of the cavity piece is pressed against the plasticized surface of the molded product in the cavity, A fifth step of transferring the fine shape formed at the tip of the cavity piece to the plasticized surface of the molded article;
A fine shape transfer molding method comprising: 前記気体が二酸化炭素であり、前記空間内に導入した前記気体の二酸化炭素を前記キャビティ駒で圧縮して前記可塑化用流体としての液体の二酸化炭素にし、前記液体の二酸化炭素で前記成形品の表面を可塑化する、
ことを特徴とする請求項６に記載の微細形状転写成形方法。 The gas is carbon dioxide, and the gaseous carbon dioxide introduced into the space is compressed by the cavity piece into liquid carbon dioxide as the plasticizing fluid, and the liquid carbon dioxide Plasticizing the surface,
The fine shape transfer molding method according to claim 6. キャビティ内の成形品の表面に微細形状を転写する微細形状転写成形金型であって、
前記キャビティは、一部がキャビティ駒の先端で構成され、
前記キャビティ駒は、前記キャビティの一部を構成する位置と前記キャビティから離れた退避位置との間を金型本体に形成されたガイド穴に沿ってスライド移動できるようになっており、
前記キャビティ駒が前記退避位置に移動することによって生じた前記ガイド穴の空間は、外部の可塑化用流体供給装置に流路で接続され、前記可塑化用流体供給装置から可塑化用流体が供給され、
前記キャビティ内の前記成形品は、前記ガイド穴の空間に対向する面が前記ガイド穴の空間内に導入された前記可塑化用流体で可塑化され、
前記成形品の可塑化された表面には、前記キャビティ駒の先端が押し付けられて、前記キャビティ駒の先端の微細形状が転写される、
ことを特徴とする微細形状転写成形金型。 A fine shape transfer mold that transfers the fine shape to the surface of the molded product in the cavity,
The cavity is partially composed of the tip of a cavity piece,
The cavity piece is configured to be slidable along a guide hole formed in the mold body between a position constituting a part of the cavity and a retracted position away from the cavity.
The space of the guide hole generated by moving the cavity piece to the retracted position is connected to an external plasticizing fluid supply device by a flow path, and the plasticizing fluid is supplied from the plasticizing fluid supply device. And
The molded product in the cavity is plasticized with the plasticizing fluid having a surface facing the space of the guide hole introduced into the space of the guide hole,
On the plasticized surface of the molded product, the tip of the cavity piece is pressed, and the fine shape of the tip of the cavity piece is transferred,
This is a fine shape transfer mold. 前記流路の途中には、前記ガイド穴の空間に前記可塑化用流体供給装置から可塑化用流体を導入するか、又は前記ガイド穴の空間内に導入された前記可塑化用流体を前記ガイド穴の空間から排出することを可能にする流路切換弁が配置された、
ことを特徴とする請求項８に記載の微細形状転写成形金型。 In the middle of the flow path, the plasticizing fluid is introduced from the plasticizing fluid supply device into the space of the guide hole, or the plasticizing fluid introduced into the space of the guide hole is introduced into the guide. A flow path switching valve that allows discharge from the hole space is arranged,
The fine shape transfer molding die according to claim 8. キャビティ内の成形品の表面に微細形状を転写する微細形状転写成形金型であって、
前記キャビティは、一部がキャビティ駒の先端で構成され、
前記キャビティ駒は、前記キャビティの一部を構成する位置と前記キャビティから離れた退避位置との間を金型本体に形成されたガイド穴に沿ってスライド移動できるようになっており、
前記キャビティ駒が前記退避位置に移動することによって生じた前記ガイド穴の空間は、外部の気体供給装置に流路で接続され、前記気体供給装置から気体が供給され、
前記キャビティ内の前記成形品は、前記ガイド穴の空間に対向する面が前記ガイド穴の空間内に導入された前記気体を前記キャビティ駒で圧縮することにより生じた可塑化用流体で可塑化され、
前記成形品の可塑化された表面には、前記キャビティ駒の先端が押し付けられて、前記キャビティ駒の先端の微細形状が転写される、
ことを特徴とする微細形状転写成形金型。 A fine shape transfer mold that transfers the fine shape to the surface of the molded product in the cavity,
The cavity is partially composed of the tip of a cavity piece,
The cavity piece is configured to be slidable along a guide hole formed in the mold body between a position constituting a part of the cavity and a retracted position away from the cavity.
The space of the guide hole generated by moving the cavity piece to the retracted position is connected to an external gas supply device through a flow path, and gas is supplied from the gas supply device.
The molded product in the cavity is plasticized with a plasticizing fluid generated by compressing the gas introduced into the space of the guide hole with the surface facing the space of the guide hole by the cavity piece. ,
On the plasticized surface of the molded product, the tip of the cavity piece is pressed, and the fine shape of the tip of the cavity piece is transferred,
This is a fine shape transfer mold. 前記流路の途中には、前記ガイド穴の空間に前記気体供給装置から前記気体を導入するか、又は前記ガイド穴の空間内に導入された前記気体を前記ガイド穴の空間から排出することを可能にする流路切換弁が配置された、
ことを特徴とする請求項１０に記載の微細形状転写成形金型。 In the middle of the flow path, the gas is introduced from the gas supply device into the space of the guide hole, or the gas introduced into the space of the guide hole is discharged from the space of the guide hole. The flow path switching valve that enables is arranged,
The fine shape transfer molding die according to claim 10.
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