JPH02162026A - Forming process of composite laminate - Google Patents
Forming process of composite laminateInfo
- Publication number
- JPH02162026A JPH02162026A JP63318168A JP31816888A JPH02162026A JP H02162026 A JPH02162026 A JP H02162026A JP 63318168 A JP63318168 A JP 63318168A JP 31816888 A JP31816888 A JP 31816888A JP H02162026 A JPH02162026 A JP H02162026A
- Authority
- JP
- Japan
- Prior art keywords
- flat part
- laminate
- flat portion
- call plate
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 10
- 238000010030 laminating Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract 2
- 239000010408 film Substances 0.000 claims description 16
- 239000003245 coal Substances 0.000 claims description 14
- 239000013039 cover film Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000001723 curing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 8
- 239000012141 concentrate Substances 0.000 abstract 1
- 238000003475 lamination Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000000569 greater omentum Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は複合材積層板の成形方法に係り、特に積層板の
成形時に、積層枚数の多い平坦部分の平面度を充分に確
保できるようにした複合材積層板の成形方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for forming a composite laminate, and in particular, to a method for forming a laminate to ensure sufficient flatness in a flat portion where a large number of laminates are laminated. The present invention relates to a method for forming a composite laminate.
第５図及び第６図は従来の複合材積層板の成形方法を示
す断面図である（例えば、特公昭５９−４２６２１号公
報参照）。5 and 6 are cross-sectional views showing a conventional method for forming a composite material laminate (see, for example, Japanese Patent Publication No. 59-42621).
先ず、第５図に示すように、材料としてのプリプレグ２
１．２１・・・２１を複数枚重ね合せて、積層品２２と
する。符号Ａで示す部分は成形後に相手部品（図示せず
）への取付面となる平坦部分であり、この平坦部分Ａの
積層枚数は他の部分の積層枚数より多くなっている。２
３は積層治具である。First, as shown in Fig. 5, prepreg 2 as a material is prepared.
1. A plurality of sheets of 21...21 are stacked to form a laminate 22. The part indicated by the symbol A is a flat part that becomes a mounting surface to a mating part (not shown) after molding, and the number of laminated sheets in this flat part A is greater than the number of laminated sheets in other parts. 2
3 is a lamination jig.
次に、第６図に示すように、真空用フィルム２４を被せ
、このフィルム２４と積層治具２３との隙間を閉じるよ
うに、その周囲をシール材２５でシールする。その後、
フィルム２４とプリプレグ２１．２１・・・２１との間
の空間２６内を真空引きして整形し、さらに、これらを
オートクレープ（図示せず）の中に入れ、ここで加圧し
、加熱し、硬化させる。Next, as shown in FIG. 6, a vacuum film 24 is placed over the film 24, and the periphery thereof is sealed with a sealing material 25 so as to close the gap between the film 24 and the lamination jig 23. after that,
The inside of the space 26 between the film 24 and the prepregs 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, etc. Let it harden.
ところで、プリプレグ２１．２１・・・２１は加熱され
ると樹脂の粘度が低下するので柔らかくなる。By the way, when the prepregs 21, 21, . . . 21 are heated, the viscosity of the resin decreases and thus becomes soft.
そのため加圧されると、第７図に示すように、平坦部分
Ａの隅部ａ、ａが圧力で変形して、平坦部分Ａが太鼓状
になり、平面度が充分に確保できなくなる。Therefore, when pressure is applied, the corners a, a of the flat portion A are deformed by the pressure, as shown in FIG. 7, and the flat portion A becomes drum-shaped, making it impossible to ensure sufficient flatness.
すなわち、第８図に示すように、平坦部分Ａの隅部ａに
は積層部の上面すと側面Ｃとに掛かる圧力が複合されて
掛かるからである。この平坦部分Ａは成形後に相手部品
（図示せず）への取付面となる部分であるから、その平
面度を確保することは極めて重要である。That is, as shown in FIG. 8, the pressures applied to the top and side surfaces C of the laminated portion are combined and applied to the corner a of the flat portion A. Since this flat portion A becomes a mounting surface to a mating part (not shown) after molding, it is extremely important to ensure its flatness.
そこで、本発明の目的は、上述した従来の技術が有する
問題点を解消し、積層板の成形時に、積層枚数の多い平
坦部分の平面度を充分に確保できるようにした複合材積
層板の成形方法を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to form a composite laminate, which solves the problems of the above-mentioned conventional techniques and makes it possible to sufficiently ensure the flatness of the flat portion where a large number of laminated sheets are formed when forming the laminate. The purpose is to provide a method.
［課題を解決するための手段〕
上記目的を達成するために、本発明は、平面度の要求さ
れる平坦部分を備える複合材積層板の成形方法において
、プリプレグを積層して平板部分を形成し、この平板部
分の上にプリプレグを積層して平坦部分を形成し、この
平坦部分の上に該平坦部分の端面の傾斜角とほぼ同一の
傾斜角を備えるコールプレートを離型フィルムにより覆
って載せ、その上に真空用の覆いフィルムを被せ、この
覆いフィルムの内側を真空引きし、その後、加圧し、加
熱して硬化させることを特徴とするものである。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method for forming a composite laminate having a flat portion requiring flatness, in which prepregs are laminated to form a flat portion. , a prepreg is laminated on this flat plate part to form a flat part, and a coal plate having an inclination angle that is approximately the same as the inclination angle of the end face of the flat part is placed on this flat part while being covered with a release film. This is characterized in that a vacuum cover film is placed thereon, the inside of the cover film is evacuated, and then pressure is applied and heat is applied to cure the film.
本発明によれば、覆いフィルムを被せる前の段階で、プ
リプレグを積層してなる平坦部分の上面に、離型フィル
ムにより覆われたコールプレートを載せるので、硬化時
には、このコールプレートが平坦部分の隅部に無理な圧
力が掛からないよう保護し、硬化後には、このコールプ
レートを平坦部分から取外すだけで、平坦部分の平面度
を充分に確保できる。また、このコールプレートは離型
フィルムにより覆われているので、これを平坦部分から
剥がすのは極めて簡単である。According to the present invention, a coal plate covered with a release film is placed on the top surface of a flat part formed by laminating prepregs before being covered with a cover film, so that during curing, this coal plate covers the flat part. By protecting the corners from excessive pressure and removing the coal plate from the flat portion after curing, the flatness of the flat portion can be sufficiently ensured. Moreover, since this coal plate is covered with a release film, it is extremely easy to peel it off from the flat part.
以下、本発明による複合材積層板の成形方法の一実施例
を第１図乃至第４図を参照して説明する。Hereinafter, one embodiment of the method for forming a composite material laminate according to the present invention will be described with reference to FIGS. 1 to 4.
第１図はプリプレグ１．１・・・１を複数枚積層してな
る積層品２の−ｒ＜面図であり、第２図及び第３図はそ
れぞれ第１図の■−■断面、■−■断面図である。FIG. 1 is a -r< cross-sectional view of a laminate 2 formed by laminating a plurality of prepregs 1.1...1, and FIGS. 2 and 3 are a cross-sectional view taken along −■ It is a sectional view.
第２図及び第３図において、プリプレグ１，１・・・１
を複数枚積層してなる積層品２は、積層治具３の上に載
置されている。この積層品２は、先ず、プリプレグ１．
１・・・１を複数枚積層して平板部分Ｂを形成し、この
平板部分Ｂの上にプリプレグ１゜１・・・１を複数枚積
層して平坦部分Ａを形成してなる。この平坦部分Ａは成
形後に相手部品（図示せず）への取付面等になる部分で
あり、その平面度には厳しい精度が要求される。In FIGS. 2 and 3, prepregs 1, 1...1
A laminated product 2 formed by laminating a plurality of sheets is placed on a lamination jig 3. This laminate 2 is first made of prepreg 1.
A flat plate portion B is formed by laminating a plurality of prepregs 1.1...1, and a flat portion A is formed by laminating a plurality of prepregs 1.1. This flat portion A serves as a mounting surface for a mating part (not shown) after molding, and strict accuracy is required for its flatness.
この積層品２の外周には該積層品２の端面を揃える治具
５が配設され、この治具５の上には、該積層品２を覆う
ように真空用の覆いフィルム６が被せられる。また、こ
の覆いフィルム６と上記積層治具３との間には、両者の
隙間を塞ぐようにシール材７が配設される。これらは従
来の構成と同じである。A jig 5 for aligning the end faces of the laminate 2 is disposed around the outer periphery of the laminate 2, and a vacuum covering film 6 is placed on top of the jig 5 to cover the laminate 2. . Further, a sealing material 7 is disposed between the cover film 6 and the lamination jig 3 so as to close the gap therebetween. These are the same as the conventional configuration.
しかして、本実施例によれば、真空用の覆いフィルム６
を被せる前の段階において、厳しい精度で平面度が要求
される平坦部分Ａの上面に、プリプレグを積層してなる
コールプレート８が載せられる。このコールプレート８
は平坦部分Ａの隅部ａ、ａに対して無理な力が掛からな
いように、その揃えられた端面が傾斜面となるよう階段
状に積層されている。また、このときコールプレート８
の周りには離型性に優れるＭ型フィルム９が被せられて
いる。According to this embodiment, the vacuum cover film 6
Before covering the plate, a caul plate 8 made of laminated prepreg is placed on the upper surface of the flat portion A, which requires flatness with strict precision. This call plate 8
are laminated in a stepwise manner so that the aligned end surfaces become inclined surfaces so that no unreasonable force is applied to the corners a, a of the flat portion A. Also, at this time, the call plate 8
An M-type film 9 having excellent mold releasability is placed around it.
このコールプレート８の素材としては、積層品２と同一
の素材からなるプリプレグでなくても良く、テープ材あ
るいはファブリック材等であっても良い。The material of this coal plate 8 does not have to be prepreg made of the same material as the laminate 2, but may be a tape material, a fabric material, or the like.
次に、本実施例の作用を説明する。Next, the operation of this embodiment will be explained.
積層品２の平坦部分への上面に、離型フィルム９で包ん
だコールプレート８を載せ、その上に、覆いフィルム６
を被せ、この覆いフィルム６の内側の空間１０（第２図
、第３図）内を真空引きすると、第４図に示すように、
これら全体に圧力が掛かり、いわゆる予備成形が行われ
る。次いで、これら全体をオートクレーブ（図示せず）
の中に入れて、加圧、加熱すると、この積層品２は完全
に硬化される。A coal plate 8 wrapped with a release film 9 is placed on the upper surface of the flat part of the laminate 2, and a cover film 6 is placed on top of it.
When the space 10 (Figs. 2 and 3) inside the cover film 6 is evacuated, as shown in Fig. 4,
Pressure is applied to all of these to perform so-called preforming. The whole was then autoclaved (not shown).
The laminate 2 is completely cured by placing it in a container, pressurizing it, and heating it.
このとき、本実施例によれば、積層品２の部分Ａの隅部
ａ−に無理な力が掛かることはない。At this time, according to this embodiment, no excessive force is applied to the corner a- of the portion A of the laminate 2.
なぜならば、第４図に示すように、コールプレート８の
端面の傾斜角は、積層品２の平坦部分Ａの端面における
傾斜角θとほぼ同一の傾斜角で形成されており、かつコ
ールプレート８の上面の隅部には圧力が集中しないよう
丸みＲが付けられており、したがって、平坦部分Ａの隅
部ａに対して、さらにはコールプレート８の上面の隅部
Ｒに対して均一な圧力が負荷されることになるからであ
る。This is because, as shown in FIG. 4, the inclination angle of the end face of the coal plate 8 is approximately the same as the inclination angle θ of the end face of the flat portion A of the laminate 2, and The corners of the top surface are rounded to avoid concentration of pressure, so that uniform pressure is applied to the corner a of the flat portion A and furthermore to the corner R of the top surface of the call plate 8. This is because it will be loaded.
そして、硬化が完了したらオートクレーブ（図示せず）
から出して、覆いフィルム６を剥がして、その後、コー
ルプレート８を取り外す。このとき、コールプレート８
は離型フィルム９で覆われているので、簡単に積層品２
の平坦部分Ａから引き剥がすことができる。これを剥が
した後の積層品２の平坦部分Ａの形状にあっては、充分
な平面度を確保することができる。Then, once curing is complete, autoclave (not shown)
The cover film 6 is peeled off, and the coal plate 8 is then removed. At this time, the coal plate 8
is covered with a release film 9, so it is easy to remove the laminated product 2.
It can be peeled off from the flat part A. After this is peeled off, the shape of the flat portion A of the laminate 2 can ensure sufficient flatness.
これによれば、積層品２の平坦部分Ａの上にコールプレ
ート８を載せるだけで、充分な平面度を確保できるとい
う効果が得られる。なお、このコールプレート８は使い
捨てで良い。According to this, it is possible to obtain the effect that sufficient flatness can be ensured simply by placing the call plate 8 on the flat portion A of the laminate 2. Note that this coal plate 8 may be disposable.
以上の説明から明らかなように、本発明によれば、プリ
プレグを積層して平板部分を形成し、この平板部分の上
にプリプレグを積層して平坦部分を形成し、この平坦部
分の上に該平坦部分の端面の傾斜角とほぼ同一の傾斜角
を備えるコールプレートを離型フィルムにより覆って載
せ、その上に真空用の覆いフィルムを被せ、この覆いフ
ィルムの内側を真空引きし、その後、加圧し、加熱して
硬化させるようにしたから、成形時には、平坦部分の隅
部がコールプレートにより保護され、全体的に均一に圧
力が掛かり、平坦部分における充分な平面度が確保され
る。As is clear from the above description, according to the present invention, prepregs are laminated to form a flat plate part, prepregs are laminated on this flat plate part to form a flat part, and prepregs are laminated on top of this flat part to form a flat part. A coal plate with an inclination angle that is almost the same as the inclination angle of the end face of the flat part is placed covered with a release film, a cover film for vacuum is placed on top of it, the inside of this cover film is evacuated, and then processed. Since the material is pressed and cured by heating, the corners of the flat portion are protected by the call plate during molding, and pressure is applied uniformly throughout, ensuring sufficient flatness in the flat portion.
第１図は本発明による複合材積層板の成形方法の一実施
例を示す平面図、第２図は第１図のｎ−■断面図、第３
図は第１図の■−■断面図、第４図は平坦部分の隅部を
示す断面図、第５図乃至第７図はそれぞれ従来の複合材
積層板の成形方法を示す断面図、′５５８図は従来の平
坦部分の隅部を示す断面図である。
１・・・プリプレグ、２・・・積層品、６・・・覆いフ
ィルム、７・・・シール材、８・・・コールプレート、
９・・・離型フィルム、Ａ・・・平坦部分、Ｂ・・・平
板部分、ａ・・・隅部。
馬４図
為８図
為５図
昆６図
出願人代理人 佐 藤 −雄
為７図FIG. 1 is a plan view showing an embodiment of the method for forming a composite material laminate according to the present invention, FIG.
The figure is a sectional view taken along the line ■--■ of Fig. 1, Fig. 4 is a sectional view showing a corner of a flat part, and Figs. 5 to 7 are sectional views showing a conventional method of forming a composite material laminate. Figure 558 is a sectional view showing a corner of a conventional flat portion. DESCRIPTION OF SYMBOLS 1... Prepreg, 2... Laminated product, 6... Covering film, 7... Sealing material, 8... Coal plate,
9... Release film, A... Flat portion, B... Flat plate portion, a... Corner. Horse 4 Design 8 Design 5 Kun 6 Applicant's agent Sato - Yuwei 7
Claims (1)
形方法において、プリプレグを積層して平板部分を形成
し、この平板部分の上にプリプレグを積層して平坦部分
を形成し、この平坦部分の上に該平坦部分の端面の傾斜
角とほぼ同一の傾斜角を備えるコールプレートを離型フ
ィルムにより覆って載せ、その上に真空用の覆いフィル
ムを被せ、この覆いフィルムの内側を真空引きし、その
後、加圧し、加熱して硬化させることを特徴とする複合
材積層板の成形方法。In a method for forming a composite laminate having a flat portion that requires flatness, prepreg is laminated to form a flat portion, prepreg is laminated on top of this flat portion to form a flat portion, and the flat portion is formed by laminating prepreg to form a flat portion. A coal plate having an inclination angle that is almost the same as the inclination angle of the end face of the flat part is placed on top of the molding plate, covered with a release film, and a cover film for vacuum is placed on top of it, and the inside of this cover film is evacuated. A method for forming a composite laminate, which comprises: , followed by applying pressure, heating and curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318168A JP2656590B2 (en) | 1988-12-16 | 1988-12-16 | Method of forming composite laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318168A JP2656590B2 (en) | 1988-12-16 | 1988-12-16 | Method of forming composite laminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02162026A true JPH02162026A (en) | 1990-06-21 |
| JP2656590B2 JP2656590B2 (en) | 1997-09-24 |
Family
ID=18096232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63318168A Expired - Fee Related JP2656590B2 (en) | 1988-12-16 | 1988-12-16 | Method of forming composite laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2656590B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0904929A1 (en) * | 1997-09-25 | 1999-03-31 | The Boeing Company | Method for forming a caul plate during moulding of a part |
| EP3248763B1 (en) * | 2016-05-13 | 2021-01-20 | Bell Helicopter Textron Inc. | Method of constructing composite structures without tooling dams |
-
1988
- 1988-12-16 JP JP63318168A patent/JP2656590B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0904929A1 (en) * | 1997-09-25 | 1999-03-31 | The Boeing Company | Method for forming a caul plate during moulding of a part |
| EP3248763B1 (en) * | 2016-05-13 | 2021-01-20 | Bell Helicopter Textron Inc. | Method of constructing composite structures without tooling dams |
| US11020910B2 (en) | 2016-05-13 | 2021-06-01 | Bell Helicopter Textron Inc. | System and method of constructing composite structures without tooling dams |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2656590B2 (en) | 1997-09-24 |
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