JP2685553B2 - Composite material molding method - Google Patents
Composite material molding methodInfo
- Publication number
- JP2685553B2 JP2685553B2 JP63318166A JP31816688A JP2685553B2 JP 2685553 B2 JP2685553 B2 JP 2685553B2 JP 63318166 A JP63318166 A JP 63318166A JP 31816688 A JP31816688 A JP 31816688A JP 2685553 B2 JP2685553 B2 JP 2685553B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- pressure
- pressure plate
- bag film
- laminated body
- 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.)
- Expired - Fee Related
Links
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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
- B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/20—Making multilayered or multicoloured articles
- B29C43/203—Making multilayered articles
-
- 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
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/546—Measures for feeding or distributing the matrix material in the reinforcing structure
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
- B29C2043/3644—Vacuum bags; Details thereof, e.g. fixing or clamping
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
- B29C2043/3657—Bags, bleeder sheets or cauls for isostatic pressing additional materials, e.g. permeable bleeder or breather sheets, cloths, blankets
-
- 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
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は複合材の成形方法に係り、特に積層された素
材間に気泡を残存させないようにした複合材の成形方法
に関する。Description: TECHNICAL FIELD The present invention relates to a composite material molding method, and more particularly to a composite material molding method in which bubbles are prevented from remaining between laminated materials.
一般に、複合材の成形方法としては、特開昭59−2272
2号公報に開示されるように、プリプレグの素材を積層
し、これを極微多孔性のフィルムシート、通気材料性の
シート、及び密閉材料性のシートで順に覆い、これらシ
ートの内側を真空引きし、オートクレーブ内に入れ、加
圧、加熱して硬化させ、これにより積層された素材間に
気泡を残存させないように成形する方法が知られてい
る。Generally, as a method of molding a composite material, Japanese Patent Laid-Open No. 59-2272
As disclosed in Japanese Patent Publication No. 2, the prepreg material is laminated, which is sequentially covered with a microporous film sheet, a breathable material sheet, and a sealing material sheet, and the inside of these sheets is evacuated. There is known a method in which the material is placed in an autoclave, and is pressed and heated to be cured so that air bubbles do not remain between the laminated materials.
この成形方法によれば、積層された素材間の気泡は該
積層体の周縁部から排出されることになる。しかしなが
ら、この周縁部は成形時に上述した各種シートの周縁部
により押し潰される格好になるので、気泡の脱出口が塞
がり、素材を積層する工程で含まれた素材間の気泡が排
出され難くなり、気泡を完全に排出させることができな
いという問題がある。According to this molding method, the bubbles between the stacked materials are discharged from the peripheral portion of the stacked body. However, since this peripheral portion is shaped to be crushed by the peripheral portions of the various sheets described above at the time of molding, the outlet of bubbles is blocked, and it becomes difficult to discharge bubbles between the materials included in the step of stacking the materials, There is a problem that bubbles cannot be completely discharged.
ところで、「応用機械工学」第84頁（昭和60年１月１
日発行）に、これを解決するための手段としての、加圧
シートを使用した真空バッグ成形硬化方法が開示されて
いる。しかしながら、このように加圧シートを使用して
も気泡を完全に排出させることはできないという問題が
ある。By the way, "Applied Mechanical Engineering" page 84 (January 1, 1985 1
(Issued daily), a vacuum bag molding and curing method using a pressure sheet is disclosed as a means for solving this. However, there is a problem in that it is not possible to completely discharge the bubbles even if the pressure sheet is used.
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、積層する工程で含まれた素材間の気
泡を完全に排出させることができる複合材の成形方法を
提供することにある。Therefore, an object of the present invention is to provide a method for molding a composite material that solves the problems of the above-mentioned conventional techniques and can completely discharge the bubbles between the materials included in the laminating step. is there.
上記目的を達成するために、本発明は、治具の上に載
せられたプリプレグの積層体の上に真空バッグフィルム
を被せ、この真空バッグフィルムの内側を真空吸引した
後、加圧し、加熱して硬化させるようにした複合材の成
形方法において；上記積層体と上記真空バッグフィルム
との間に中央部が凹んだ曲面形からなる弾性変形自在の
加圧板を凹部を上に向けて介装し、真空バッグフィルム
の内側を真空吸引するに際して、初期の段階では該加圧
板の中央部を介して積層体の中央部に真空圧力が負荷さ
れ、時間の経過とともに、徐々に加圧板が平坦状に弾性
変形して真空圧力が該加圧板の周辺部迄および加圧板全
体を介して積層体の全域に負荷されるようにしたことを
特徴とするものであり、 また、他の発明は、上記真空バッグフィルムの内側を
真空吸引するに際して、真空圧力を、初期の段階では小
さく、時間の経過とともに徐々に増大させるようにした
ことを特徴とするものである。In order to achieve the above object, the present invention covers a vacuum bag film on a laminate of prepregs placed on a jig, and after vacuum suction of the inside of the vacuum bag film, pressurizing and heating. In the method of molding a composite material, the elastically deformable pressure plate having a curved central portion is inserted between the laminate and the vacuum bag film with the concave portion facing upward. During vacuum suction of the inside of the vacuum bag film, vacuum pressure is applied to the center of the laminate through the center of the pressure plate in the initial stage, and the pressure plate gradually becomes flat with the passage of time. Another feature of the invention is that the vacuum pressure is elastically deformed so that the vacuum pressure is applied to the peripheral portion of the pressure plate and to the entire region of the laminate through the entire pressure plate. Inside the bag film When vacuum suctioning the, the vacuum pressure is small at the initial stage and gradually increased with the passage of time.
本発明によれば、真空バッグフィルムの内側を真空吸
引するに際し、初期の段階では、加圧板の凹部を介して
積層体の中央部に真空圧力が負荷され、よって、この部
分に含まれている気泡は徐々に積層体の端に移動して行
き、時間の経過とともに、加圧板が平坦状に弾性変形し
て、この加圧板を介して負荷される真空圧力は徐々に周
辺部にまで及ぶようになり、よって、積層体に含まれて
いる気泡は積層体の外部に完全に排出されることにな
る。According to the present invention, when vacuum suctioning the inside of the vacuum bag film, in the initial stage, vacuum pressure is applied to the central portion of the laminate through the concave portion of the pressure plate, and thus the vacuum bag film is included in this portion. The bubbles gradually move to the edge of the laminated body, and over time, the pressure plate elastically deforms into a flat shape, and the vacuum pressure applied via this pressure plate gradually extends to the peripheral portion. Therefore, the bubbles contained in the laminated body are completely discharged to the outside of the laminated body.
以下、本発明による複合材の成形方法の一実施例を添
附図面を参照して説明する。An embodiment of the method for molding a composite material according to the present invention will be described below with reference to the accompanying drawings.
第１図において、１は治具を示している。この治具１
の上には離型フィルム２が載せられ、この離型フィルム
２の上にはプリプレグを積層してなる積層体３が載せら
れ、この積層体３の上にはさらに離型フィルム４が載せ
られている。この積層体３の外周には該積層体３の端面
を揃えるダム５が配設されている。In FIG. 1, reference numeral 1 indicates a jig. This jig 1
A release film 2 is placed on the release film 2, a laminate 3 made by laminating prepregs is placed on the release film 2, and a release film 4 is further placed on the laminate 3. ing. A dam 5 for arranging the end faces of the laminated body 3 is arranged on the outer periphery of the laminated body 3.
また、その上には、積層体３、及びダム５までを完全
に覆う通気材料性のブリーザ６が載せられ、その上に
は、真空バッグフィルム７が被せられている。この真空
バッグフィルム７と上記治具１との間には、両者の隙間
を塞ぐ耐熱シーラント８が介装されている。Further, a breather material breather 6 that completely covers the laminated body 3 and the dam 5 is placed thereon, and a vacuum bag film 7 is covered thereon. A heat-resistant sealant 8 is interposed between the vacuum bag film 7 and the jig 1 to close the gap between them.
そして、本実施例によれば、離型フィルム４とブリー
ザ６との間に、第４図に示すように、特殊形状をした弾
性変形自在の加圧板９が凹分を上に向けて介装されてい
る。この加圧板９はピンフォーミング成形法（シットピ
ーニングにて成形する方法）等により成形されており、
第５図及び第６図からも明らかなように、中央が適度に
凹んだ曲面形になっている。Further, according to this embodiment, as shown in FIG. 4, an elastically deformable pressure plate 9 having a special shape is interposed between the release film 4 and the breather 6 with the concave portion facing upward. Has been done. The pressure plate 9 is formed by a pin forming method (a method of forming by sit peening) or the like,
As is clear from FIG. 5 and FIG. 6, the center is a curved surface with an appropriate depression.
次に、本実施例の作用を第１図乃至第３図を参照して
説明する。Next, the operation of this embodiment will be described with reference to FIGS.
第１図に示すように、積層体３、加圧板９、ブリーザ
６及び真空バッグフィルム７を順に重ねたのち、真空バ
ッグフィルム７の内側の空間10内を真空引きする。する
と初期の段階では、同図から明らかなように、積層体３
の中央部に、加圧板９の中央部の凹んだ部分を介して真
空圧力が負荷される。これにより、積層体３内部の中央
部に含まれている気泡ａは順に端部に移動を開始する。As shown in FIG. 1, after stacking the laminate 3, the pressure plate 9, the breather 6 and the vacuum bag film 7 in this order, the inside of the vacuum bag film 7 is evacuated. Then, in the initial stage, as is clear from the figure, the laminated body 3
Vacuum pressure is applied to the central portion of the pressure plate 9 through the concave portion of the central portion of the pressure plate 9. As a result, the bubbles a contained in the central portion inside the stacked body 3 sequentially start moving to the end portions.
真空圧力が増大してくると、第２図に示すように、圧
力板９は次第に変形して平坦状になってくる。これによ
り、積層体３に負荷される真空圧力は中央部だけでな
く、その周辺部にまで及ぶようになり、積層体３内部に
含まれている気泡ａはさらに端部に移動する。As the vacuum pressure increases, the pressure plate 9 gradually deforms and becomes flat as shown in FIG. As a result, the vacuum pressure applied to the laminated body 3 reaches not only the central portion but also the peripheral portion thereof, and the bubbles a contained in the laminated body 3 further move to the ends.
そして、真空圧力がさらに増大してくると、遂には、
第３図に示すように、圧力板９は全くの平坦状になり、
積層体３に負荷される真空圧力は該積層体３の全域に及
ぼされ、積層体３内部に含まれている気泡ａは端部から
完全に排出される。And when the vacuum pressure increases further, finally,
As shown in FIG. 3, the pressure plate 9 becomes completely flat,
The vacuum pressure applied to the laminated body 3 is applied to the entire area of the laminated body 3, and the bubbles a contained in the inside of the laminated body 3 are completely discharged from the ends.
ここで、加圧板９の大きさ、板厚、中央部の凹みに関
する曲率等は、最大真空圧力が加圧板９に負荷されたと
き、それが変形して、第３図に示すように、完全に平坦
状になるよう設定される。例えば、同図において、−76
0mmHgの真空圧力を負荷したとき、Ａ点に対しては約1Kg
/cm2、Ｂ点及びＣ点に対しては約0.5Kg/cm2程度の加圧
力が負荷されるよう設定される。Here, when the maximum vacuum pressure is applied to the pressure plate 9, the pressure plate 9 has a size, a plate thickness, a curvature related to the depression, and the like, which are completely deformed as shown in FIG. Is set to be flat. For example, in the figure, -76
When a vacuum pressure of 0 mmHg is applied, about 1 kg for point A
The pressure is set to about 0.5 kg / cm 2 for the points / cm 2 , B and C.
このように構成すれば、真空バッグフィルム７の内側
の空間10内を真空引きするに際し、真空圧力が積層体３
の中央部から徐々に端に向かって負荷されて行くので、
積層体３内部に含まれている気泡ａは順に端部に移動し
て行くことになり、よって遂には完全に積層体３の外に
排出されるので、内部に残存することがなくなる。した
がって、いわゆるボイドレスの複合材を成形することが
でき、作業者の熟練度に影響されないで、常に高品質の
安定した複合材を得ることができる。According to this structure, when the space 10 inside the vacuum bag film 7 is evacuated, the vacuum pressure is applied to the laminate 3
Since the load gradually goes from the central part of the
The bubbles a contained in the laminated body 3 sequentially move to the end portions, and are finally completely discharged to the outside of the laminated body 3, so that they do not remain inside. Therefore, a so-called voidless composite material can be molded, and a stable high-quality composite material can always be obtained without being affected by the skill level of the operator.
第７図は湾曲した積層体３を成形する他の実施例を示
している。治具１は湾曲して成形されており、この治具
１の上には積層体３が載せられ、この積層体３の上には
加圧板９、ブリーザ６、及び真空バッグフィルム７が順
に載せられている。これによっても、上記と同様に加圧
板９を介して真空圧力は順に積層体３の端に向かって負
荷されて行く。よって、該積層体３の内部に含まれてい
る気泡ａを完全に外部に排出することができる。FIG. 7 shows another embodiment for forming the curved laminated body 3. The jig 1 is formed in a curved shape, and the laminated body 3 is placed on the jig 1, and the pressure plate 9, the breather 6, and the vacuum bag film 7 are placed on the laminated body 3 in this order. Has been. Also by this, the vacuum pressure is sequentially applied toward the end of the laminated body 3 via the pressure plate 9 similarly to the above. Therefore, the bubbles a contained in the laminate 3 can be completely discharged to the outside.
また、第８図及び第９図は他の実施例を示している。
ここで、第８図はオートクレーブ工程における代表的な
180℃硬化型の硬化サイクルを示し、第９図は第８図の
中で符号IXで示した範囲を示している。積層体３は図示
のような過程を経て硬化される。8 and 9 show another embodiment.
Here, FIG. 8 shows a typical autoclave process.
A 180 ° C. curing type curing cycle is shown, and FIG. 9 shows the range indicated by reference numeral IX in FIG. The laminated body 3 is cured through the process shown in the figure.
さらに、この実施例によれば、第９図に示すように、
段階的に真空圧力が負荷される。例えば、ステップＡで
は−190mmHgの真空圧力、ステップＢでは−380mmHgの真
空圧力、ステップＣでは−570mmHgの真空圧力、ステッ
プＤでは−760mmHgの真空圧力が負荷される。なお、ス
テップＡ乃至Ｃではホールド時間５分、ステップＤでは
ホールド時間５分以上に設定されている。Further, according to this embodiment, as shown in FIG.
Vacuum pressure is applied in stages. For example, a vacuum pressure of -190 mmHg is applied in step A, a vacuum pressure of -380 mmHg is applied in step B, a vacuum pressure of -570 mmHg is applied in step C, and a vacuum pressure of -760 mmHg is applied in step D. The hold time is set to 5 minutes in steps A to C, and the hold time is set to 5 minutes or more in step D.
この実施例では、上記の実施例と同様に加圧板９を使
用するわけであるが、これら各ステップＡ乃至Ｄを第１
図乃至第３図の場合と比較すると、段階的に真空圧力を
増大させる構成になっている点で異なっている。すなわ
ち、第１図乃至第３図の場合にあっては、真空開始時に
一気に最大真空圧力にまで到達させてしまうが、この実
施例の場合にあっては段階的に真空圧力を増大させる構
成になっている。したがって、第１図から第３図に至る
までの時間、すなわち脱気に要する時間を充分に長くす
ることができ、より完全に気泡ａを排出させることが可
能になる。In this embodiment, the pressure plate 9 is used as in the above-mentioned embodiment, but these steps A to D are performed first.
Compared with the case of FIGS. 3 to 3, it is different in that the vacuum pressure is increased stepwise. That is, in the case of FIG. 1 to FIG. 3, the maximum vacuum pressure is suddenly reached to the maximum vacuum pressure at the time of starting the vacuum, but in the case of this embodiment, the vacuum pressure is increased stepwise. Has become. Therefore, the time from FIG. 1 to FIG. 3, that is, the time required for degassing can be made sufficiently long, and the bubbles a can be discharged more completely.
ステップＡはいわゆる第１図の段階に相当し、気泡ａ
は徐々に積層体３の端に向かって移動を開始し、ステッ
プＢ、Ｃはいわゆる第２図の段階に相当し、気泡ａはさ
らに積層体３の端に向かって移動し、ステップＤはいわ
ゆる第３図の段階に相当し、これにより気泡ａは積層体
３の端から完全に脱出する。Step A corresponds to the so-called stage of FIG.
Starts to move gradually toward the end of the laminated body 3, steps B and C correspond to the so-called stage of FIG. 2, the bubbles a further move toward the end of the laminated body 3, and step D is so-called. This corresponds to the stage of FIG. 3, whereby the bubble a completely escapes from the end of the laminate 3.
このように単に加圧板９を介在させるだけでなく、真
空圧力条件を段階的に設定するようにしたから、積層体
３から気泡ａをより確実に排出させることができ、した
がって、積層体３の大きさに左右されることなく、常に
安定した高品質の成形品を得ることができるという効果
が得られる。As described above, not only the pressurizing plate 9 is interposed, but the vacuum pressure condition is set stepwise, so that the bubbles a can be more surely discharged from the laminated body 3, and therefore the laminated body 3 It is possible to obtain a stable and high-quality molded product without depending on the size.
以上の説明から明らかなように、本発明によれば、中
央が凹んだ曲面形からなる弾性変形自在の加圧板を凹部
を上にして使用し、真空吸引するに際して、積層体の中
央部から周辺部に向けて徐々に真空圧力が負荷されるよ
うにしたから、積層体の内部に含まれている気泡は中央
から端に向けて押出される格好になり、その端から完全
に排出される。また、他の発明によれば、真空吸引する
に際して、徐々に真空圧力を増大させるようにしたか
ら、負荷される真空圧力が積層体の中央部から周辺部に
向けて移動する時間が長くなり、より完全に気泡を排出
させることができる。As is clear from the above description, according to the present invention, an elastically deformable pressure plate having a curved central surface with a concave center is used with the concave part facing upward, and when vacuum suction is performed, the central part of the laminate is surrounded by the peripheral part. Since the vacuum pressure is gradually applied toward the portion, the bubbles contained in the inside of the laminated body are in the form of being extruded from the center toward the end, and are completely discharged from the end. Further, according to another invention, when vacuum suction is performed, the vacuum pressure is gradually increased, so that the time period during which the applied vacuum pressure moves from the central portion to the peripheral portion of the laminated body becomes long, The bubbles can be discharged more completely.
第１図乃至第３図はそれぞれ本発明による複合材の成形
方法の一実施例を示す断面図、第４図は同じく加圧板を
示す平面図、第５図は第４図のＶ−Ｖ断面図、第６図は
第４図のVI−VI断面図、第７図は他の実施例を示す断面
図、第８図はオートクレーブ工程における硬化サイクル
を示す線図、第９図は第８図の範囲IXを拡大して示す線
図である。 １……治具、３……積層体、６……ブリーザ、７……真
空バッグフィルム、９……加圧板。1 to 3 are sectional views showing an embodiment of the method for molding a composite material according to the present invention, FIG. 4 is a plan view showing the same pressing plate, and FIG. 5 is a sectional view taken along line VV of FIG. Fig. 6, Fig. 6 is a sectional view taken along line VI-VI in Fig. 4, Fig. 7 is a sectional view showing another embodiment, Fig. 8 is a diagram showing a curing cycle in an autoclave process, and Fig. 9 is Fig. 8. It is a diagram which expands and shows the range IX of. 1 ... Jig, 3 ... Laminated body, 6 ... Breather, 7 ... Vacuum bag film, 9 ... Pressure plate.
Claims (2)
の上に真空バッグフィルムを被せ、この真空バッグフィ
ルムの内側を真空吸引した後、加圧し、加熱して硬化さ
せるようにした複合材の成形方法において；上記積層体
と上記真空バッグフィルムとの間に中央部が凹んだ曲面
形からなる弾性変形自在の加圧板を凹部を上に向けて介
装し、真空バッグフィルムの内側を真空吸引するに際し
て、初期の段階では該加圧板の中央部を介して積層体の
中央部に真空圧力が負荷され、時間の経過とともに、徐
々に加圧板が平坦状に弾性変形して真空圧力が該加圧板
の周辺部を介して積層体の全域に負荷されるようにした
ことを特徴とする複合材の成形方法。1. A composite in which a vacuum bag film is covered on a laminate of prepregs placed on a jig, the inside of the vacuum bag film is vacuum-sucked, and then pressurized and heated to cure. In the method for forming a material, an elastically deformable pressure plate having a curved central surface with a recessed central portion is interposed between the laminate and the vacuum bag film, with the recess facing upward, and the inside of the vacuum bag film is fixed. At the initial stage of vacuum suction, vacuum pressure is applied to the central portion of the laminated body through the central portion of the pressure plate, and with the passage of time, the pressure plate gradually elastically deforms into a flat shape and the vacuum pressure is reduced. A method for molding a composite material, wherein the whole area of the laminate is loaded via the peripheral portion of the pressure plate.
するに際して、真空圧力を、初期の段階では小さく、時
間の経過とともに徐々に増大させるようにしたことを特
徴とする請求項１記載の複合材の成形方法。2. The composite material according to claim 1, wherein when the inside of the vacuum bag film is vacuum-sucked, the vacuum pressure is small in the initial stage and gradually increased with the passage of time. Molding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318166A JP2685553B2 (en) | 1988-12-16 | 1988-12-16 | Composite material molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318166A JP2685553B2 (en) | 1988-12-16 | 1988-12-16 | Composite material molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02162016A JPH02162016A (en) | 1990-06-21 |
| JP2685553B2 true JP2685553B2 (en) | 1997-12-03 |
Family
ID=18096210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63318166A Expired - Fee Related JP2685553B2 (en) | 1988-12-16 | 1988-12-16 | Composite material molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2685553B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2804412B2 (en) * | 1992-01-30 | 1998-09-24 | 日機装 株式会社 | Method of manufacturing lattice structure |
| US6290895B1 (en) * | 1997-10-14 | 2001-09-18 | General Electric Company | Selectively flexible caul and method of use |
| GB9828368D0 (en) * | 1998-12-22 | 1999-02-17 | British Aerospace | Forming reinforcing components |
| EP1074369B1 (en) * | 1999-08-04 | 2005-10-05 | Conception et Développement Michelin S.A. | Method for manufacturing highly stressed composite pieces |
| US7306450B2 (en) * | 2004-09-29 | 2007-12-11 | The Boeing Company | Apparatuses, systems, and methods for manufacturing composite parts |
| EP2145751A1 (en) * | 2008-07-18 | 2010-01-20 | Euro-Composites S.A. | Method for producing a hollow body from fibre compound plastic |
| GB0816114D0 (en) | 2008-09-04 | 2008-10-15 | Airbus Uk Ltd | Assembling and shaping laminate panel |
| JP5550537B2 (en) * | 2010-12-08 | 2014-07-16 | 三菱重工業株式会社 | Composite manufacturing method |
| EP2660031B1 (en) | 2010-12-27 | 2020-03-25 | Kawasaki Jukogyo Kabushiki Kaisha | Molding jig and molding method |
| DE102015014512B4 (en) * | 2015-11-11 | 2017-05-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and device for the consolidation of impregnated fiber composite structures |
-
1988
- 1988-12-16 JP JP63318166A patent/JP2685553B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02162016A (en) | 1990-06-21 |
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