JPH09201878A - Optically shaped product and manufacture thereof - Google Patents
Optically shaped product and manufacture thereofInfo
- Publication number
- JPH09201878A JPH09201878A JP8013630A JP1363096A JPH09201878A JP H09201878 A JPH09201878 A JP H09201878A JP 8013630 A JP8013630 A JP 8013630A JP 1363096 A JP1363096 A JP 1363096A JP H09201878 A JPH09201878 A JP H09201878A
- Authority
- JP
- Japan
- Prior art keywords
- stereolithography
- curing
- photocurable resin
- reinforcing component
- cured product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光硬化樹脂を紫外
線レーザで硬化させ立体物を作成する光造形技術に関
し、特に射出成形に用いても成形品が高精度で得られる
高強度の型を作製できる光造形方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereolithography technique for curing a photocurable resin with an ultraviolet laser to produce a three-dimensional object, and particularly to a high-strength mold capable of obtaining a molded product with high accuracy even when used in injection molding. The present invention relates to a stereolithography method that can be manufactured.
【０００２】[0002]
【従来の技術】光造形装置、光造形方法は、特開昭５６
−１４４４７８号公報、特開昭６３−１４１７２４号公
報、特開平２−２２０３５号公報、特開平２−１７８０
２２号公報等に記載されているように、三次元ＣＡＤの
データから等高線データを作成し、そのデータに基づい
て容器内に光硬化樹脂あるいは硬化させて一層ずつ積み
重ねて所望の立体形状を作成するものである。複雑な構
造物を短時間で作成することのできる技術である。2. Description of the Related Art A stereolithography apparatus and a stereolithography method are disclosed in JP-A-56
-144478, JP-A-63-141724, JP-A-2-22035, JP-A2-1780
As described in Japanese Patent No. 22, etc., contour line data is created from three-dimensional CAD data, and based on the data, a photo-curing resin or a resin is cured in the container and stacked one by one to create a desired three-dimensional shape. It is a thing. It is a technology that can create complex structures in a short time.
【０００３】光造形で使用できる材料が光硬化樹脂に限
定されているため、造形物の強度、耐熱性に問題があっ
たが、材料の改善によりこの光造形技術で作成した造形
物を、射出成形用の型として利用する光造形直接型の技
術が日刊工業新聞平成６年６月９日号に記載されてい
る。Since the material that can be used for stereolithography is limited to photocurable resin, there is a problem in the strength and heat resistance of the stereolithography, but by improving the material, the stereolithography created by this stereolithography technique is injected. The technique of the direct photolithography mold used as a mold for molding is described in the June 9, 1994 issue of the Nikkan Kogyo Shimbun.
【０００４】[0004]
【発明が解決しようとする課題】しかし、材料特性が向
上したといえども所詮は光造形直接型は樹脂製であり、
従来の金型材料として用いられている金属の炭素鋼、ス
テンレス鋼やアルミニウム等と比較すると、射出成形等
に使用するには強度不足であり、造形型に薄い突起部が
あると、成形時に変形が発生したり、破損する等の問題
があった。その現象を図を用いて説明する。However, even though the material properties are improved, after all the stereolithography direct mold is made of resin,
Compared with conventional metal materials such as carbon steel, stainless steel, and aluminum, which are used as mold materials, the strength is insufficient for use in injection molding, etc., and if the molding die has thin protrusions, it will deform during molding. There were problems such as occurrence and damage. This phenomenon will be described with reference to the drawings.
【０００５】光造形で作製した光造形直接型の模式図を
図６（ａ）に示す。２１、２２は光造形で作成した造形
型で、造形型２１に突起部２１ａが存在している。２３
は造形型２１、２２囲まれた空間で成形される樹脂が充
填されるキャビティ、２４は充填された成形樹脂であ
る。FIG. 6 (a) shows a schematic view of a stereolithography direct mold produced by stereolithography. Numerals 21 and 22 are modeling dies created by stereolithography, and the modeling dies 21 have protrusions 21 a. 23
Is a cavity filled with a resin molded in the space surrounded by the molding dies 21 and 22, and 24 is a filled molding resin.
【０００６】この場合、射出成形機（図示せず）よりス
プル、ランナ、ゲート（いずれも図示せず）等を介し
て、溶融状態の成形樹脂２４がキャビティ２３内に充填
されると、造形型２１の突起部２１ａの部分が厚さが小
さくて強度が低いため、図６（ｂ）に示すような樹脂の
充填時の射出圧力により、突起部２１ａが変形して成形
品の形状がくずれて寸法精度が悪くなる。また、冷却工
程中の成形樹脂２４の収縮により、成形樹脂２４が突起
部２１ａに喰い付いて、突起部２１ａを破損させること
がある。In this case, when the injection molding machine (not shown) fills the cavity 23 with the molding resin 24 in a molten state via a sprue, a runner, a gate (all not shown), etc. Since the portion of the protrusion 21a of 21 has a small thickness and low strength, the protrusion 21a is deformed by the injection pressure at the time of filling the resin as shown in FIG. The dimensional accuracy becomes poor. Further, due to the shrinkage of the molding resin 24 during the cooling process, the molding resin 24 may bite the protrusion 21a and damage the protrusion 21a.
【０００７】本発明の目的は、成形品が高精度で得られ
ることのできる高強度の造形型およびそのための造形方
法を提供することにある。An object of the present invention is to provide a high-strength molding die capable of obtaining a molded product with high accuracy and a molding method therefor.
【０００８】[0008]
【課題を解決するための手段】本発明では、成形型を強
度不足を補うための強度の高い金属の補強部品と光硬化
樹脂の硬化物の複合構造の造形型とし、前記造形型部分
が完全に硬化する前に、硬化物部分と前記補強部品とを
嵌合させ、それらの境界面を密着させることにより達成
される。According to the present invention, a molding die is a molding die having a composite structure of a reinforcing member made of a metal having high strength for compensating for insufficient strength and a cured product of a photo-curing resin. This is achieved by fitting the cured product portion and the reinforcing component and closely adhering the boundary surfaces thereof before curing.
【０００９】金属補強部品と光硬化樹脂の硬化物の複合
構造の造形型とすることは、硬化物だけの造形型では強
度の低い部分の強度を補強板により強度を高くできるた
め、射出圧力による変形は小さくなり成形品の寸法精度
が向上するとともに、成形樹脂の収縮による喰い付きに
対する強度を確保することができ破損を防止することが
できる。The use of a molding structure having a composite structure of a metal reinforced component and a cured product of a photo-curing resin makes it possible to increase the strength of a portion having low strength with a reinforcing plate by means of the injection pressure because the strength of the portion having a low strength can be increased. The deformation is reduced, the dimensional accuracy of the molded product is improved, and the strength against biting due to shrinkage of the molding resin can be secured and damage can be prevented.
【００１０】[0010]
【発明の実施の形態】以下、本発明の造形方法および造
形物の一実施例を図により説明する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a modeling method and a modeled article according to the present invention will be described below with reference to the drawings.
【００１１】図１は本発明により作製した光造形型の構
造の一部分の一例を示した断面図である。１１、１２は
光造形で作製した造形型である。造形型１１には突起部
１１ａが存在している。１４は金属補強部品で、前記造
形型１１の突起部１１ａの内部に設けてある。FIG. 1 is a sectional view showing an example of a part of the structure of a stereolithography mold produced according to the present invention. Reference numerals 11 and 12 are modeling dies produced by stereolithography. The modeling die 11 has a protrusion 11a. Reference numeral 14 denotes a metal reinforcing component, which is provided inside the protrusion 11a of the modeling die 11.
【００１２】この図１に示す構造の光造形型を作製する
方法の一実施例を図２ないし図５に示す。図２で、１は
光造形装置、２は光硬化樹脂、３は光硬化樹脂１の入っ
た容器、４は容器２内を上下に動作することができるエ
レベータ装置、５はレーザ光源、６は容器２内の光硬化
樹脂２の上面（液面）２ａを動作するスキジ、７はエレ
ベータ装置４、レーザ光源５およびスキジ６の動作を制
御する制御装置である。An embodiment of a method for producing the stereolithography mold having the structure shown in FIG. 1 is shown in FIGS. In FIG. 2, 1 is a stereolithography device, 2 is a photocurable resin, 3 is a container containing the photocurable resin 1, 4 is an elevator device that can move up and down in the container 2, 5 is a laser light source, and 6 is A squeegee that operates the upper surface (liquid level) 2a of the photocurable resin 2 in the container 2, and 7 is a control device that controls the operations of the elevator device 4, the laser light source 5, and the squeegee 6.
【００１３】図２のように構成された光造形装置１での
造形物作製方法の動作の一例は次のようになる。まず三
次元ＣＡＤデータから作成した等高線データにより、各
積層面でのレーザ光５ａの照射位置制御データおよびエ
レベータ装置４の動作制御データが制御装置６に入力さ
れる。An example of the operation of the method for producing a model in the stereolithography apparatus 1 configured as shown in FIG. 2 is as follows. First, based on the contour line data created from the three-dimensional CAD data, the irradiation position control data of the laser beam 5a on each laminated surface and the operation control data of the elevator device 4 are input to the control device 6.
【００１４】そして光硬化樹脂２の液面２ａより一層の
厚さ分だけ制御装置７によりエレベータ装置４を下げ
る。そして制御装置７により光硬化樹脂２を硬化すべき
位置にレーザ光５ａを照射し、一層分の紫外線硬化樹脂
層をエレベータ装置４のベース上底面４ａに密着させ
る。Then, the elevator device 4 is lowered by the control device 7 by a thickness that is one layer thicker than the liquid surface 2a of the photocurable resin 2. Then, the control device 7 irradiates the position where the photocurable resin 2 should be cured with the laser beam 5a, and the ultraviolet curable resin layer for one layer is brought into close contact with the base upper bottom surface 4a of the elevator device 4.
【００１５】１層目が硬化したらエレベータ装置４をさ
らに一層の厚さ分下げて、１層目の上に未硬化樹脂を満
遍なくコートする。さらにスキジ６を動作させて、液面
２ａを安定化する。When the first layer is cured, the elevator device 4 is lowered by a thickness of one layer, and the uncured resin is evenly coated on the first layer. Further, the squeegee 6 is operated to stabilize the liquid surface 2a.
【００１６】そして２層目を同様に硬化させ、１層目の
上に密着させる。これを繰り返し行って、光硬化樹脂の
造形物１１を作製する。Then, the second layer is similarly cured and adhered onto the first layer. By repeating this, the photocurable resin shaped article 11 is manufactured.
【００１７】作製した硬化物１１には突起部１１ａがあ
り、その直近に空間１１ｂを設けて造形を行う。この空
間１１ｂの形状は予め三次元ＣＡＤデータで入力したも
のである。また、空間１１ｂは突起部１１ａのように厚
さが薄くて強度が小さい部分の直近に設ける。The manufactured cured product 11 has a protrusion 11a, and a space 11b is provided in the vicinity of the protrusion 11a for modeling. The shape of the space 11b is input in advance with three-dimensional CAD data. Further, the space 11b is provided in the immediate vicinity of a portion having a small thickness and a small strength such as the protrusion 11a.
【００１８】作製した造形物の形状は図３に示すように
なる。この状態では、造形物１１は半硬化状態であり、
完全には硬化していない。The shape of the manufactured model is as shown in FIG. In this state, the molded article 11 is in a semi-cured state,
Not fully cured.
【００１９】この状態で図４（ａ）に示すように、造形
物１１の空間１１ｂに補強部品１４を挿入する。その
後、図４（ｂ）に示すように紫外線ランプ１５により造
形物１１に紫外線１６を照射する。この時、造形物１１
の空間１１ｂの表面の未硬化樹脂が挿入した補強部品の
表面に密着して硬化される。従って、造形物１１と補強
部品１４が密着するため、容易にははずれない。In this state, as shown in FIG. 4A, the reinforcing component 14 is inserted into the space 11b of the modeled article 11. After that, as shown in FIG. 4B, the molded article 11 is irradiated with ultraviolet rays 16 by the ultraviolet lamp 15. At this time, the modeled object 11
The uncured resin on the surface of the space 11b adheres to the surface of the inserted reinforcing component and is cured. Therefore, the molded article 11 and the reinforcing component 14 come into close contact with each other and cannot be easily removed.
【００２０】以上により、図１に示すように強度の小さ
い突起部１１ａの直近に補強部品１４を挿入して強度が
向上した造形型１１を作製することができた。As described above, as shown in FIG. 1, the reinforcing component 14 was inserted in the immediate vicinity of the protruding portion 11a having a low strength, so that the molding die 11 having an improved strength could be manufactured.
【００２１】この造形型１１を用いた成形型の一実施例
を図５に示す。成形型３１は固定型３２と可動型３３で
構成されており、各々に上記の方法で作製した補強部品
を挿入して強度を高めた造形型１１Ａ、１１Ｂが組み込
まれている。ここでは、型の概略構造を示しており、造
形型１１Ａ、１１Ｂ内に挿入された補強部品の図示は省
略する。造形型１１Ａ、１１Ｂに挟まれた空間３３が成
形樹脂が充填されるキャビティである。FIG. 5 shows an embodiment of a molding die using this molding die 11. The molding die 31 is composed of a fixed die 32 and a movable die 33, and the molding dies 11A and 11B, in which the reinforcing parts produced by the above-mentioned method are inserted to enhance the strength, are incorporated therein. Here, the schematic structure of the mold is shown, and the illustration of the reinforcing component inserted into the molding dies 11A and 11B is omitted. The space 33 sandwiched between the molding dies 11A and 11B is a cavity filled with the molding resin.
【００２２】図示しない成形機から射出された樹脂がキ
ャビティ３３内に充填される。この時、造形型１１Ａ、
１１Ｂは補強部品で強度を高くしてあるため、射出圧力
での変形は小さく、破損しない。その後、キャビティ３
３内の樹脂が冷却されて樹脂の体積収縮が生じるが、射
出の時と同様に造形型１１Ａ、１１Ｂは補強部品で強度
を高くしてあるため、樹脂の収縮力での変形は小さく、
破損しない。A resin injected from a molding machine (not shown) is filled in the cavity 33. At this time, the molding die 11A,
Since 11B is a reinforcing component having high strength, it is not deformed by injection pressure and is not damaged. Then, cavity 3
Although the resin in 3 is cooled and the resin shrinks in volume, since the molding dies 11A and 11B are made of reinforcing parts to increase the strength as in the case of injection, the deformation due to the contracting force of the resin is small,
Does not break.
【００２３】以上のように、補強部品を挿入した造形型
を用いることにより、造形型の変形が小さくなり寸法精
度の向上した成形を得ることができた。また、型の破損
が生じることなく、この造形型を長期間使用することが
できた。As described above, by using the molding die in which the reinforcing component is inserted, the deformation of the molding die is reduced and the molding with improved dimensional accuracy can be obtained. In addition, the molding die could be used for a long period of time without damage to the die.
【００２４】本実施例では、強度小さい部分として突起
部を示したが、突起部でなくても形状を問わず強度が小
さい部分であれば、その直近に補強部品を挿入挿入して
強度を高めることにより同様の効果が得られる。In this embodiment, the protrusion is shown as a portion having a low strength, but if the portion is not a protrusion and has a small strength regardless of the shape, a reinforcing component is inserted and inserted in the vicinity thereof to enhance the strength. As a result, the same effect can be obtained.
【００２５】なお、補強部品１４の材質として、炭素
鋼、ステンレス鋼等の鉄材料やアルミニウム等の非鉄金
属材料を用いることができる。またセラミック等の非金
属であっても強度の大きい材質であってもよい。As the material of the reinforcing component 14, a ferrous material such as carbon steel or stainless steel or a non-ferrous metal material such as aluminum can be used. Further, it may be a non-metal such as ceramic or a material having high strength.
【００２６】また、光硬化樹脂２としてはウレタンアク
リレート系、エポキシアクリレート系の樹脂等や、それ
らに充填剤を添加したものを用いることができる。Further, as the photocurable resin 2, urethane acrylate-based or epoxy acrylate-based resin or the like, or those obtained by adding a filler to them can be used.
【００２７】[0027]
【発明の効果】本発明によれば、金属補強板と造形型の
複合構造にすることにより型の変形を小さくし、成形樹
脂の収縮による喰い付きに対する強度を大きくし型の破
損を防止することができたので、高精度の成形品を数多
く得ることができた。According to the present invention, a composite structure of a metal reinforcing plate and a molding die is used to reduce the deformation of the die, increase the strength against biting due to shrinkage of the molding resin, and prevent damage to the die. As a result, many high-precision molded products could be obtained.
【図１】本発明の光造形型構造の一実施例の断面図。FIG. 1 is a sectional view of an embodiment of a stereolithography structure of the present invention.
【図２】本発明の光造形型を作製する光造形装置の一実
施例を示す断面図。FIG. 2 is a cross-sectional view showing an embodiment of a stereolithography apparatus for manufacturing the stereolithography mold of the present invention.
【図３】本発明の光造形型構造の造形部分の一実施例を
示す断面図。FIG. 3 is a cross-sectional view showing an example of a modeling portion of the stereolithography structure of the present invention.
【図４】本発明の光造形型を作製する方法の一実施例の
断面図。FIG. 4 is a cross-sectional view of an example of a method for producing a stereolithography mold of the present invention.
【図５】本発明の光造形型を用いた成形型の一実施例の
断面図。FIG. 5 is a cross-sectional view of an example of a molding die that uses the stereolithography mold of the present invention.
【図６】従来の光造形型の型構造の一実施例とそれを用
いたときの成形時の状態を示す断面図。FIG. 6 is a cross-sectional view showing an example of a mold structure of a conventional stereolithography mold and a state at the time of molding when using the mold structure.
１…光造形装置、 ２…光硬化樹脂、 ３…容器、 ４…エレベータ装置、 ５…レーザ光源、 ６…スキジ、 ７…制御装置、 １１…光硬化樹脂硬化物、 １４…金属補強板。 DESCRIPTION OF SYMBOLS 1 ... Stereolithography apparatus, 2 ... Photocuring resin, 3 ... Container, 4 ... Elevator apparatus, 5 ... Laser light source, 6 ... Squeegee, 7 ... Control device, 11 ... Photocuring resin cured material, 14 ... Metal reinforcement plate.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｋ 105:24 (72)発明者 小澤 雅彦 神奈川県横浜市戸塚区吉田町292番地株式 会社日立製作所マルチメディアシステム開 発本部内 (72)発明者 遠藤 敏朗 神奈川県横浜市戸塚区吉田町292番地株式 会社日立製作所マルチメディアシステム開 発本部内 (72)発明者 村中 昌幸 東京都千代田区神田駿河台四丁目６番地株 式会社日立製作所内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location B29K 105: 24 (72) Inventor Masahiko Ozawa 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi, Ltd. Multimedia system development headquarters (72) Inventor Toshiro Endo 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa, Ltd. 6-chome, Hitachi, Ltd.
Claims (4)
層することにより立体物を作製する光造形において、前
記光硬化樹脂を硬化して作製する硬化物に、補強部品を
挿入する部分を設けて造形し、前記硬化物を完全に硬化
させる前に前記硬化物に補強部品を挿入し、その後に前
記硬化物を前記補強部品と密着させて硬化させて、造形
物を作製することを特徴とする光造形物の作製方法。1. In a stereolithography for producing a three-dimensional object by curing a photocurable resin with an ultraviolet laser and laminating the same, a cured product produced by curing the photocurable resin is provided with a portion for inserting a reinforcing component. Characterized by inserting a reinforcing component into the cured product before completely curing the cured product, and then curing the cured product by closely adhering to the reinforcing component to produce a molded product. A method for producing a stereolithography object.
層することにより作製する光造形物において、前記光硬
化樹脂を硬化した硬化物に、補強部品を密着挿入して作
製したことを特徴とする光造形物。2. An optical molding produced by curing a photocurable resin with an ultraviolet laser and laminating the photocurable resin, wherein a reinforcing component is closely inserted into the cured product obtained by curing the photocurable resin. Stereolithography that does.
が完全に硬化する前に、前記硬化物に前記補強部品を挿
入し、その後に前記硬化物を前記補強部品と密着させて
硬化させて作製したことを特徴とする光造形物。3. The stereolithography product according to claim 2, wherein the reinforcing component is inserted into the cured product before the cured product is completely cured, and then the cured product is brought into close contact with the reinforcing component to cure. A stereolithographic object characterized by being produced by
層することにより作製する光造形物において、前記光硬
化樹脂を硬化した硬化物に、補強部品を密着挿入して作
製した光造形物を成形品を賦形するキャビティ面に用い
たことを特徴とする成形型。4. A stereolithography product produced by curing a photocurable resin with an ultraviolet laser and stacking the photocurable resin. A photofabricated product produced by closely inserting a reinforcing component into the cured product obtained by curing the photocurable resin. A molding die characterized by being used for a cavity surface for shaping a molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8013630A JPH09201878A (en) | 1996-01-30 | 1996-01-30 | Optically shaped product and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8013630A JPH09201878A (en) | 1996-01-30 | 1996-01-30 | Optically shaped product and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09201878A true JPH09201878A (en) | 1997-08-05 |
Family
ID=11838565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8013630A Pending JPH09201878A (en) | 1996-01-30 | 1996-01-30 | Optically shaped product and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09201878A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017154486A (en) * | 2016-02-29 | 2017-09-07 | 株式会社ミマキエンジニアリング | Method for manufacturing three-dimensional molded object, three-dimensional object and molding apparatus |
| WO2017150196A1 (en) * | 2016-02-29 | 2017-09-08 | 株式会社ミマキエンジニアリング | Method for manufacturing three-dimensional molded object, three-dimensional molded object, and molding device |
| CN113334759A (en) * | 2021-06-03 | 2021-09-03 | 中国空间技术研究院 | Integrated additive manufacturing method for fiber reinforced truss structure and metal connecting piece |
-
1996
- 1996-01-30 JP JP8013630A patent/JPH09201878A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017154486A (en) * | 2016-02-29 | 2017-09-07 | 株式会社ミマキエンジニアリング | Method for manufacturing three-dimensional molded object, three-dimensional object and molding apparatus |
| WO2017150196A1 (en) * | 2016-02-29 | 2017-09-08 | 株式会社ミマキエンジニアリング | Method for manufacturing three-dimensional molded object, three-dimensional molded object, and molding device |
| US11718016B2 (en) | 2016-02-29 | 2023-08-08 | Mimaki Engineering Co., Ltd. | Three-dimensional object manufacturing method, three-dimensional object, and shaping device |
| CN113334759A (en) * | 2021-06-03 | 2021-09-03 | 中国空间技术研究院 | Integrated additive manufacturing method for fiber reinforced truss structure and metal connecting piece |
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