JPH11268067A - Manufacture of fiber reinforced plastic molding and mold thereof - Google Patents

Manufacture of fiber reinforced plastic molding and mold thereof

Info

Publication number
JPH11268067A
JPH11268067A JP10079099A JP7909998A JPH11268067A JP H11268067 A JPH11268067 A JP H11268067A JP 10079099 A JP10079099 A JP 10079099A JP 7909998 A JP7909998 A JP 7909998A JP H11268067 A JPH11268067 A JP H11268067A
Authority
JP
Japan
Prior art keywords
pressing force
fiber
reinforced plastic
plastic molded
resin
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
Application number
JP10079099A
Other languages
Japanese (ja)
Other versions
JP3528582B2 (en
Inventor
Naoto Ikegawa
直人 池川
Satoru Yamauchi
哲 山内
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP07909998A priority Critical patent/JP3528582B2/en
Publication of JPH11268067A publication Critical patent/JPH11268067A/en
Application granted granted Critical
Publication of JP3528582B2 publication Critical patent/JP3528582B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B29C43/32—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
    • 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
    • B29C2043/3649—Inflatable bladders using gas or fluid and related details
    • 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
    • B29C2043/3655—Pressure transmitters, e.g. caul plates; pressure pads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/769—Sanitary equipment
    • B29L2031/7692—Baths

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent the deformation of a forming mold due to the cure shrinkage of a resin layer by a method wherein a counter pressing force for negating a resin pressing force, which is applied on the outer surface of a convexedly bent part due to the cure shrinkage of the resin layer, is applied on the inner surface of the convex surface part. SOLUTION: In an inner space 9, a reinforcing means 5 for applying a counter pressing force for negating a resin pressing force to the inner surface of a convexedly bent part 1 is provided. This reinforcing means 5 consists of a pressing bag 6, the outer surface of which abuts against and supports the inner surface of the convexedly bent part 1 through its expansion and a fluid supplying device 7 for pouring a fluid 17 in the pressing bag 6 for expansion. The pressing bag 6 is made of a rubber air bag, for example, and arranged in the inner space 9. Further, the fluid supplying device is composed of a pump, for example, and arranged outside the inner space 9. As the fluid 17, air is generally used and water, oil or the like may be employed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、ハンドレイアップ
法やスプレイアップ法によって成形される繊維強化プラ
スチック成形品の製造方法に関し、特に、浴槽などの容
器形状の繊維強化プラスチック成形品の製造方法及びそ
の成形型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fiber-reinforced plastic molded article formed by a hand lay-up method or a spray-up method, and more particularly to a method for producing a fiber-reinforced plastic molded article in a container shape such as a bathtub. It relates to the mold.

【０００２】[0002]

【従来の技術】従来、図９に示すように、浴槽などの容
器形状の繊維強化プラスチック成形品の製造方法は、凸
状屈曲部１を外方に有する成形型２の外面に樹脂層３を
積層し、この樹脂層３を硬化させた後に離型して行われ
る。成形型２は、繊維強化プラスチック成形品４の表面
側を成形する上向きに凸状屈曲部１を有する雄型２２
と、繊維強化プラスチック成形品４の裏面側を成形する
下向きに凹部を有する雌型２３と、枠型１５とから構成
されている。ここで、雄型２２はガラスマット層やガラ
スクロス層を多数積層したＦＲＰ型であり、全体に亘っ
てその厚みは略均等に形成されている。また、雄型２２
の凸状屈曲部１の内空間９には複数の補強部材２１が縦
横に固定されている。2. Description of the Related Art Conventionally, as shown in FIG. 9, a method for producing a fiber-reinforced plastic molded article in the shape of a container such as a bathtub is based on a method in which a resin layer 3 is formed on the outer surface of a mold 2 having a convex bent portion 1 on the outside. Lamination is performed after the resin layer 3 is cured and the mold is released. The molding die 2 has a male mold 22 having an upwardly convex bent portion 1 for molding the surface side of the fiber-reinforced plastic molded product 4.
And a female mold 23 having a downward concave portion for molding the back side of the fiber-reinforced plastic molded product 4, and a frame mold 15. Here, the male mold 22 is an FRP type in which a large number of glass mat layers and glass cloth layers are laminated, and the thickness thereof is substantially uniform over the entirety. In addition, male mold 22
A plurality of reinforcing members 21 are fixed vertically and horizontally in the inner space 9 of the convex bending portion 1 of FIG.

【０００３】このような繊維強化プラスチック成形品の
製造方法では、樹脂層３が硬化収縮して雄型２２の凸状
屈曲部１を内方に押圧する樹脂押圧力が加えられても、
補強部材２１によって支え、凸状屈曲部１が内方に撓ま
ないように形成されている。In such a method of manufacturing a fiber-reinforced plastic molded product, even if the resin layer 3 is cured and shrunk and a resin pressing force for pressing the convex bent portion 1 of the male mold 22 inward is applied,
It is supported by the reinforcing member 21 and is formed so that the convex bending portion 1 does not bend inward.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、上記従
来の繊維強化プラスチック成形品の製造方法及びその成
形型２においては、凸状屈曲部１内面に当接している補
強部材２１が熱膨張などによって凸状屈曲部１内面を外
方に押圧し、雄型２２表面にクラックが発生したり、雄
型２２が割れたりするなどの問題がある。However, in the above-mentioned conventional method for manufacturing a fiber-reinforced plastic molded product and the molding die 2, the reinforcing member 21 in contact with the inner surface of the convex bent portion 1 is convex due to thermal expansion or the like. There is a problem in that the inner surface of the bent portion 1 is pressed outwardly to cause cracks on the surface of the male mold 22 and that the male mold 22 is broken.

【０００５】本発明は、上記事由に鑑みてなしたもの
で、その目的とするところは、樹脂層の硬化収縮による
成形型の変形を防止するとともに、成形型にクラックが
発生したり、割れたりすることがない繊維強化プラスチ
ック成形品の製造方法及びその成形型を提供することに
ある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent deformation of a molding die due to curing shrinkage of a resin layer, and to cause cracks or cracks in the molding die. An object of the present invention is to provide a method for producing a fiber-reinforced plastic molded article and a molding die for the same.

【０００６】[0006]

【課題を解決するための手段】上記目的を達成するため
に、請求項１記載の発明は、外方に凸状屈曲部１を有す
る成形型２の外面に樹脂層３を積層し、この樹脂層３を
硬化させた後に離型して行われる繊維強化プラスチック
成形品の製造方法において、樹脂層３の硬化収縮によっ
て凸状屈曲部１外面に加えられる樹脂押圧力に対抗し、
この樹脂押圧力を打ち消すような対抗押圧力を凸状屈曲
部１内面に加えることを特徴として構成している。In order to achieve the above object, according to the first aspect of the present invention, a resin layer 3 is laminated on an outer surface of a molding die 2 having an outwardly protruding bent portion 1, In a method for producing a fiber-reinforced plastic molded product, which is performed after the layer 3 is cured and released from the mold, the resin layer 3 resists resin pressing force applied to the outer surface of the convex bending portion 1 by curing shrinkage of the resin layer 3,
It is characterized in that an opposing pressing force for canceling the resin pressing force is applied to the inner surface of the convex bending portion 1.

【０００７】このような繊維強化プラスチック成形品の
製造方法では、成形型２の外面に積層された樹脂層３の
硬化収縮によって成形型２の外面に加えられる樹脂押圧
力に対抗して、樹脂押圧力を打ち消すような対抗押圧力
を凸状屈曲部１内面に加えているため、樹脂押圧力と対
抗押圧力とが釣り合い、凸状屈曲部１に加えられる樹脂
押圧力を見かけ上なくすことができ、樹脂押圧力によっ
て凸状屈曲部１が内面下方へ膨らむように変形すること
を防止している。In such a method for manufacturing a fiber-reinforced plastic molded product, the resin pressing force applied to the outer surface of the molding die 2 by the curing shrinkage of the resin layer 3 laminated on the outer surface of the molding die 2 is reduced. Since the opposing pressing force for canceling the pressure is applied to the inner surface of the convex bending portion 1, the resin pressing force and the opposing pressing force are balanced, and the resin pressing force applied to the convex bending portion 1 can be apparently eliminated. This prevents the convex bent portion 1 from being deformed so as to expand downward on the inner surface due to the resin pressing force.

【０００８】また、請求項２記載の発明は、請求項１記
載の発明において、樹脂押圧力の大きさ変化に応じて対
抗押圧力の大きさを変化させることを特徴として構成し
ている。The invention according to claim 2 is characterized in that, in the invention according to claim 1, the magnitude of the opposing pressing force is changed according to the change in the magnitude of the resin pressing force.

【０００９】このような繊維強化プラスチック成形品の
製造方法では、製造工程の各段階で順に硬化収縮率の異
なる樹脂層３が積層されて樹脂押圧力が大きさが経時変
化しても、この樹脂押圧力変化に応じて対抗押圧力の大
きさを変化させているため、製造工程全体にわたって、
凸状屈曲部１に加えられる樹脂押圧力を見かけ上なくす
ことができる。In such a method for producing a fiber-reinforced plastic molded article, even if the resin layers 3 having different curing shrinkage rates are sequentially laminated at each stage of the production process and the magnitude of the resin pressing force changes with time, this resin Since the magnitude of the opposing pressing force is changed according to the change in the pressing force, throughout the manufacturing process,
The resin pressing force applied to the convex bending portion 1 can be apparently eliminated.

【００１０】また、請求項３記載の発明は、凸状屈曲部
１を含む外面に樹脂層３が積層されて繊維強化プラスチ
ック成形品４が形成される繊維強化プラスチック成形品
４の成形型２において、樹脂層３の硬化収縮によって凸
状屈曲部１外面に加えられる樹脂押圧力に対抗し、この
樹脂押圧力を打ち消すように凸状屈曲部１内面を支持す
る補強手段５を具備してなることを特徴として構成して
いる。Further, the invention according to claim 3 provides a molding die 2 for a fiber-reinforced plastic molded product 4 in which a resin layer 3 is laminated on an outer surface including a convex bent portion 1 to form a fiber-reinforced plastic molded product 4. And reinforcing means 5 for supporting the inner surface of the convex bent portion 1 so as to oppose the resin pressing force applied to the outer surface of the convex bent portion 1 by the curing shrinkage of the resin layer 3 and cancel the resin pressing force. The feature is constituted.

【００１１】このような繊維強化プラスチック成形品４
の成形型２では、成形型２の外面に積層された樹脂層３
の硬化収縮によって成形型２の外面に加えられる樹脂押
圧力に対抗して、補強手段５が樹脂押圧力を打ち消すよ
うな対抗押圧力を凸状屈曲部１内面に加えているため、
樹脂押圧力と対抗押圧力とが釣り合い、凸状屈曲部１に
加えられる樹脂押圧力を見かけ上なくすことができ、樹
脂押圧力によって凸状屈曲部１が内面側へ膨らむように
変形することを防止している。Such a fiber-reinforced plastic molded product 4
In the molding die 2, the resin layer 3 laminated on the outer surface of the molding die 2
The reinforcing means 5 applies an opposing pressing force against the resin pressing force applied to the outer surface of the molding die 2 due to the curing shrinkage to the inner surface of the convex bending portion 1 so as to cancel the resin pressing force.
The resin pressing force and the opposing pressing force are balanced, and the resin pressing force applied to the convex bending portion 1 can be apparently eliminated, and the resin pressing force deforms the convex bending portion 1 so as to expand toward the inner surface side. Preventing.

【００１２】また、請求項４記載の発明は、請求項３記
載の発明において、膨張によりその外面が凸状屈曲部１
内面に当接して支持する押圧袋６と、この押圧袋６に流
体１７を注入して膨張させる流体供給装置７とから補強
手段５を形成してなることを特徴として構成している。According to a fourth aspect of the present invention, in the third aspect of the present invention, the outer surface thereof has a convex bent portion 1 due to expansion.
It is characterized in that the reinforcing means 5 is formed by a pressing bag 6 which is in contact with and supports the inner surface, and a fluid supply device 7 which injects and expands a fluid 17 into the pressing bag 6.

【００１３】このような繊維強化プラスチック成形品４
の成形型２では、補強手段５の流体供給装置７から流体
１７が押圧袋６内に供給されて押圧袋６が膨張し、押圧
袋６外面が凸状屈曲部１内面を押圧して対抗押圧力を形
成している。Such a fiber-reinforced plastic molded product 4
In the molding die 2, the fluid 17 is supplied from the fluid supply device 7 of the reinforcing means 5 into the pressing bag 6, the pressing bag 6 expands, and the outer surface of the pressing bag 6 presses the inner surface of the convex bent portion 1 to counteract the pressing. Building pressure.

【００１４】また、請求項５記載の発明は、請求項３記
載の発明において、樹脂押圧力を打ち消すように凸状屈
曲部１内面を支持するように、充填材８を凸状屈曲部１
の内空間９に充填して補強手段５を形成してなることを
特徴として構成している。According to a fifth aspect of the present invention, in the third aspect of the invention, the filler 8 is provided so as to support the inner surface of the convex bent portion 1 so as to cancel the resin pressing force.
And the reinforcing means 5 is formed by filling the inner space 9.

【００１５】このような繊維強化プラスチック成形品４
の成形型２では、凸状屈曲部１の内空間９に充填された
充填材８によって、樹脂押圧力を打ち消すように凸状屈
曲部１内面を支持しているため、樹脂押圧力によって凸
状屈曲部１が内面側へ膨らむように変形することを防止
している。Such a fiber-reinforced plastic molded product 4
In the molding die 2, the inner surface of the convex bending portion 1 is supported by the filler 8 filled in the inner space 9 of the convex bending portion 1 so as to cancel the resin pressing force. The bent portion 1 is prevented from being deformed so as to expand toward the inner surface.

【００１６】また、請求項６記載の発明は、請求項５記
載の発明において、無収縮材１０により充填材８を形成
してなることを特徴として構成している。The invention according to claim 6 is characterized in that, in the invention according to claim 5, the filler 8 is formed by the non-shrinkable material 10.

【００１７】このような繊維強化プラスチック成形品４
の成形型２では、凸状屈曲部１の内空間９に充填された
無収縮材１０が収縮せずに、凸状屈曲部１内面を支持し
ているため、樹脂押圧力によって凸状屈曲部１が内面側
へ膨らむように変形することを防止している。Such a fiber-reinforced plastic molded product 4
Since the non-shrinkable material 10 filled in the inner space 9 of the convex bending portion 1 does not shrink and supports the inner surface of the convex bending portion 1 in the molding die 2, the convex bending portion is pressed by the resin pressing force. 1 is prevented from deforming so as to bulge inward.

【００１８】また、請求項７記載の発明は、請求項５記
載の発明において、温度変化によって膨縮自在の発泡材
１１により充填材８を形成してなることを特徴として構
成している。Further, the invention according to claim 7 is characterized in that, in the invention according to claim 5, the filler 8 is formed of a foam material 11 which can be expanded and contracted by a change in temperature.

【００１９】このような繊維強化プラスチック成形品４
の成形型２では、周囲温度を上げて繊維強化プラスチッ
ク成形品４を硬化させる際に、この温度上昇により発泡
材１１が膨張して凸状屈曲部１の内空間９を満たし、凸
状屈曲部１内面を支持しているため、樹脂押圧力によっ
て凸状屈曲部１が内面側へ膨らむように変形することを
防止している。Such a fiber-reinforced plastic molded product 4
When the ambient temperature is raised and the fiber-reinforced plastic molded product 4 is cured, the temperature rise causes the foam material 11 to expand and fill the inner space 9 of the convex bent portion 1, thereby forming the convex bent portion 1. Since the inner surface 1 is supported, the convex bending portion 1 is prevented from being deformed so as to expand toward the inner surface side due to the resin pressing force.

【００２０】また、請求項８記載の発明は、請求項５乃
至７記載の発明において、凸状屈曲部１の内空間９に空
間補助部材１２を設け、この空間補助部材１２外面と凸
状屈曲部１内面との間に充填材８又は発泡材１１を設け
てなることを特徴として構成している。The invention according to claim 8 is the invention according to claims 5 to 7, wherein a space auxiliary member 12 is provided in the inner space 9 of the convex bending portion 1, and the outer surface of the space auxiliary member 12 is formed in a convex shape. It is characterized in that a filler 8 or a foam material 11 is provided between itself and the inner surface of the part 1.

【００２１】このような繊維強化プラスチック成形品４
の成形型２では、凸状屈曲部１の内空間９の大部分を空
間補助部材１２に占めさせ、残りの凸状屈曲部１内面近
傍の狭い空間に充填材８や発泡材１１が存在させること
ができるため、充填材８や発泡材１１の少量とすること
ができ、製造コストが低減できる。Such a fiber-reinforced plastic molded product 4
In the molding die 2, the space assisting member 12 occupies most of the inner space 9 of the convex bending portion 1, and the filler 8 and the foam material 11 are present in the narrow space near the inner surface of the remaining convex bending portion 1. Therefore, the amount of the filler 8 or the foamed material 11 can be reduced, and the manufacturing cost can be reduced.

【００２２】[0022]

【発明の実施の形態】以下、本発明の実施形態の繊維強
化プラスチック成形品の製造方法及びその成形型を図１
乃至図８に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for manufacturing a fiber-reinforced plastic molded product according to an embodiment of the present invention and a molding die thereof are shown in FIG.
A description will be given based on FIGS.

【００２３】図１は、本発明の実施形態の繊維強化プラ
スチック成形品の製造方法を示す要部の縦断面図であ
り、（ａ）は成形前、（ｂ）、（ｃ）は樹脂層３の形成
工程、（ｄ）は硬化工程、（ｅ）は離型工程、（ｆ）は
成形後である。また、図２は、同上の繊維強化プラスチ
ック成形品の製造方法に用いる成形型の平面図である。
また、図３は、同上の繊維強化プラスチック成形品の製
造方法において、対抗押圧力の経時変化を示すグラフ図
である。FIG. 1 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded product according to an embodiment of the present invention, wherein (a) is before molding, (b) and (c) are resin layers 3. (D) is a curing step, (e) is a release step, and (f) is after molding. FIG. 2 is a plan view of a molding die used in the method for producing a fiber-reinforced plastic molded product according to the first embodiment.
FIG. 3 is a graph showing the change over time of the opposing pressing force in the method for producing a fiber-reinforced plastic molded product according to the first embodiment.

【００２４】図１乃至図３に示すように、この繊維強化
プラスチック成形品の製造方法は、浴槽などの容器形状
の成形品４を製造する方法であり、使用される成形型２
が外方に凸状屈曲部１を有している。成形型２の外面に
樹脂層３を積層し、この樹脂層３を硬化させた後に離型
を行なっている。このとき、樹脂層３の硬化収縮によっ
て凸状屈曲部１外面に加えられる樹脂押圧力に対抗し、
この樹脂押圧力を打ち消すような対抗押圧力を凸状屈曲
部１内面に加えている。As shown in FIGS. 1 to 3, this method of producing a fiber-reinforced plastic molded product is a method of producing a container-shaped molded product 4 such as a bathtub.
Have a convex bent portion 1 outward. The resin layer 3 is laminated on the outer surface of the molding die 2, and after the resin layer 3 is cured, the mold is released. At this time, the resin layer 3 opposes the resin pressing force applied to the outer surface of the convex bending portion 1 due to the curing shrinkage of the resin layer 3,
An opposing pressing force that counteracts the resin pressing force is applied to the inner surface of the convex bending portion 1.

【００２５】この繊維強化プラスチック成形品４は、浴
槽及び床部を一体に成形して得られるものである。成形
型２は、樹脂層３が積層される外面側にビニルエステル
樹脂などからなるゲルコートと、内面側に補強繊維束及
びビニルエステル樹脂などからなる裏側層とから形成さ
れ、全体に亘ってその厚みは略均等に形成されている。
ゲルコートの厚みは０．３〜０．８ｍｍ、裏側層の厚み
は１０ｍｍを目安として形成されている。補強繊維束
は、ガラス繊維からなるサーフェスマット層、ガラスマ
ット層及びガラスクロス層などを多数積層して形成され
ている。The fiber-reinforced plastic molded product 4 is obtained by integrally molding a bathtub and a floor. The molding die 2 is formed from a gel coat made of vinyl ester resin or the like on the outer surface on which the resin layer 3 is laminated, and a back layer made of a reinforcing fiber bundle and a vinyl ester resin on the inner surface, and has an overall thickness. Are formed substantially uniformly.
The thickness of the gel coat is about 0.3 to 0.8 mm, and the thickness of the back side layer is about 10 mm. The reinforcing fiber bundle is formed by laminating many surface mat layers, glass mat layers, glass cloth layers, and the like made of glass fibers.

【００２６】また、成形型２は、浴槽部を形成する下側
平坦部２ａと、下側平坦部２ａの内側端縁に一体に立設
された立ち上げ部２ｂと、立ち上げ部２ｂの上端縁に一
体に略水平方向に曲折されて床部を形成する上側平坦部
２ｃとから構成されている。下側平坦部２ａは、枠型１
５上に密着して支持固定され、枠型１５端部に立設され
た支持部材１６上に上側平坦部２ｃの外側端部が支持固
定されている。立ち上げ部２ｂと上側平坦部２ｃとから
上向きの凸状屈曲部１を形成しており、上側平坦部２ｃ
と枠型１５との間に内空間９を形成している。なお、枠
型１５や支持部材１６として、ベニア板、単板、アング
ル、パイプなどが用いられる。The molding die 2 includes a lower flat portion 2a forming a bathtub portion, a rising portion 2b integrally formed on the inner edge of the lower flat portion 2a, and an upper end of the rising portion 2b. And an upper flat portion 2c which is bent in a substantially horizontal direction integrally with the edge to form a floor portion. The lower flat portion 2a is
The outer end of the upper flat portion 2c is supported and fixed on a support member 16 erected at the end of the frame mold 15 in close contact with and fixed on the frame 5. An upward convex bending portion 1 is formed from the rising portion 2b and the upper flat portion 2c, and the upper flat portion 2c is formed.
An inner space 9 is formed between the inner space 9 and the frame mold 15. Note that a veneer, a veneer, an angle, a pipe, or the like is used as the frame mold 15 or the support member 16.

【００２７】内空間９には、樹脂押圧力を打ち消すよう
な対抗押圧力を凸状屈曲部１内面に加えるための補強手
段５が配設されている。この補強手段５は、膨張により
その外面が凸状屈曲部１内面に当接して支持する押圧袋
６と、この押圧袋６に流体１７を注入して膨張させる流
体供給装置７とから構成されている。押圧袋６は、例え
ばゴム製のエアバッグから形成され内空間９内に配設さ
れている。また、流体供給装置７は、例えばポンプから
形成され、内空間９外に配設されている。流体１７とし
ては、エアーが一般的に用いられるが、水、オイルなど
を用いてもよい。この押圧袋６と流体供給装置７は流体
供給パイプ１４により連結され、流体供給装置７から排
出される流体１７を流体供給パイプ１４を経由して押圧
袋６内に供給できるとともに、押圧袋６内の流体１７を
流体供給パイプ１４を経由して流体供給装置７に吸引し
て排出できるようになっている。押圧袋６の圧力は押圧
袋６内の流体１７の量によって決定され、この流体１７
の量を自在に変化させることによって圧力の大きさを自
在に調整できる。また、押圧袋６は、膨張したときに少
なくとも内空間９を満たす大きさにまで達することがで
きるような大きさや耐強度を有するように形成されてい
る。The inner space 9 is provided with a reinforcing means 5 for applying an opposing pressing force for canceling the resin pressing force to the inner surface of the convex bending portion 1. The reinforcing means 5 includes a pressing bag 6 whose outer surface is in contact with and supports the inner surface of the convex bending portion 1 by expansion, and a fluid supply device 7 for injecting a fluid 17 into the pressing bag 6 and expanding the same. I have. The pressing bag 6 is formed of, for example, a rubber airbag, and is disposed in the inner space 9. The fluid supply device 7 is formed of, for example, a pump and is disposed outside the inner space 9. Air is generally used as the fluid 17, but water, oil, or the like may be used. The pressure bag 6 and the fluid supply device 7 are connected by a fluid supply pipe 14, and the fluid 17 discharged from the fluid supply device 7 can be supplied into the pressure bag 6 via the fluid supply pipe 14. The fluid 17 can be sucked and discharged to the fluid supply device 7 via the fluid supply pipe 14. The pressure of the pressure bladder 6 is determined by the amount of the fluid 17 in the pressure bladder 6.
By freely changing the amount of the pressure, the magnitude of the pressure can be freely adjusted. The pressure bag 6 is formed so as to have a size and strength that can reach at least a size that fills the inner space 9 when inflated.

【００２８】このような成形型２を用い、以下のように
して繊維強化プラスチック成形品４を形成する。Using such a molding die 2, a fiber-reinforced plastic molded product 4 is formed as follows.

【００２９】まず、枠型１５及び支持部材１６上に成形
型２をボルトなどにより機械的に一体に固定する。この
とき、流体供給装置７の操作により押圧袋６を凸状屈曲
部１内面に接しない大きさに設定し、成形型２に圧力が
加わらない状態にしておく。First, the molding die 2 is mechanically and integrally fixed on the frame die 15 and the support member 16 with bolts or the like. At this time, the size of the pressing bag 6 is set so as not to be in contact with the inner surface of the convex bending portion 1 by operating the fluid supply device 7, and the pressure is not applied to the molding die 2.

【００３０】次に、樹脂層３のゲルコート３ａを形成す
る工程において、不飽和ポリエステル樹脂及び顔料を主
成分とするゲルコート樹脂を成形型２表面に略均一に吹
き付けてのゲルコート３ａを形成する。そして、ゲルコ
ート３ａ表面を指触して指紋が残る程度までゲルコート
３ａを硬化させる。なお、ゲルコート３ａの厚みは０．
３ｍｍ〜０．５ｍｍを目安として形成される。Next, in the step of forming the gel coat 3a of the resin layer 3, a gel coat resin mainly composed of an unsaturated polyester resin and a pigment is sprayed on the surface of the mold 2 substantially uniformly to form a gel coat 3a. Then, the gel coat 3a is cured by touching the surface of the gel coat 3a until the fingerprint remains. In addition, the thickness of the gel coat 3a is 0.1.
It is formed with 3 mm to 0.5 mm as a guide.

【００３１】このとき、ゲルコート３ａは、自然硬化に
より少し収縮し、成形型２外面に樹脂押圧力が加わる。
したがって、この樹脂押圧力によって成形型２が変形し
ないように、樹脂押圧力に対抗して打ち消すような大き
さの対抗押圧力を凸状屈曲部１内面に加える。この対抗
押圧力は、流体供給装置７の操作により押圧袋６に流体
１７を供給して内空間９いっぱいに膨張させることによ
り発生でき、押圧袋６外面が凸状屈曲部１内面を押圧す
る圧力すなわち対抗押圧力を樹脂押圧力に略等しい大き
さになるよう設定する。At this time, the gel coat 3a slightly shrinks due to natural curing, and a resin pressing force is applied to the outer surface of the mold 2.
Therefore, in order to prevent the molding die 2 from being deformed by the resin pressing force, an opposing pressing force of a magnitude that counteracts the resin pressing force is applied to the inner surface of the convex bent portion 1. This opposing pressing force can be generated by supplying the fluid 17 to the pressing bag 6 by operating the fluid supply device 7 and expanding the inside of the inner space 9, and the outer surface of the pressing bag 6 presses the inner surface of the convex bent portion 1. That is, the opposing pressing force is set to be substantially equal to the resin pressing force.

【００３２】この場合の樹脂押圧力Ｐ１の大きさは、Ｐ
１＝Ｆ１／Ｓで表される。F１は、ゲルコート３ａが成
形型２を押す力を示し、（１）式により算出される。 Ｆ１＝ゲルコート３ａの弾性率×ゲルコート３ａの収縮率×凸状屈曲部１の上側 平坦部２ｃ長さ×ゲルコート３ａの厚み・・・（１） また、Ｓは、凸状屈曲部１の上側平坦部２ｃ表面積を示
す。ここにおいて、ゲルコート３ａの弾性率を２８００
ＭＰａ、ゲルコート３ａの収縮率を８．０％、凸状屈曲
部１の上側平坦部２ｃ長さを８００ｍｍ、ゲルコート３
ａの厚みを０．３ｍｍ、凸状屈曲部１の上側平坦部２ｃ
表面積を１６００×５５０ｍｍ2とすると、Ｆ１＝５．
３７６ｋｇｆとなり、Ｐ１＝０．００６ｋｇｆ／ｍｍ2
となる。したがって、対抗押圧力の大きさＱ１も、Ｑ１
＝０．００６ｋｇｆ／ｍｍ2となる。In this case, the magnitude of the resin pressing force P1 is P
1 = F1 / S F1 indicates the force by which the gel coat 3a pushes the molding die 2, and is calculated by equation (1). F1 = elastic modulus of gel coat 3a × shrinkage rate of gel coat 3a × upper side of convex bent portion 1 length of flat portion 2c × thickness of gel coat 3a (1) Further, S is flat upper side of convex bent portion 1. The surface area of the portion 2c is shown. Here, the elastic modulus of the gel coat 3a is 2800
MPa, the shrinkage of the gel coat 3a is 8.0%, the length of the upper flat portion 2c of the convex bending portion 1 is 800 mm, and the gel coat 3 is
a of 0.3 mm, upper flat portion 2c of convex bending portion 1
If the surface area is 1600 × 550 mm 2 , F1 = 5.
376 kgf, P1 = 0.006 kgf / mm 2
Becomes Therefore, the magnitude Q1 of the opposing pressing force is also Q1
= 0.006 kgf / mm 2 .

【００３３】さらに、樹脂層３のラミネート３ｂを形成
する工程において、ガラスロービングから導出される長
尺状の補強繊維束を次々に５〜１５ｍｍに切断するとと
もに、切断された多数の補強繊維束をスプレーガンより
噴出される熱硬化性樹脂により一体として、ゲルコート
３ａ表面に略均一に吹き付けてラミネート３ｂを形成す
る。なお、ラミネート３ｂの厚みは１ｍｍ、ラミネート
３ｂ内の補強繊維束の含有率は重量比２５〜３０％を目
安として形成される。Further, in the step of forming the laminate 3b of the resin layer 3, the long reinforcing fiber bundles led out of the glass roving are cut one after another into 5 to 15 mm, and a large number of cut reinforcing fiber bundles are cut. The laminate 3b is formed by spraying the surface of the gel coat 3a almost uniformly with a thermosetting resin sprayed from a spray gun. The thickness of the laminate 3b is 1 mm, and the content of the reinforcing fiber bundle in the laminate 3b is formed with a weight ratio of 25 to 30% as a guide.

【００３４】このとき、ゲルコート３ａと同様に、ラミ
ネート３ｂが自然硬化により少し収縮し、成形型２外面
に樹脂押圧力が加わる。したがって、この樹脂押圧力に
よって成形型２が変形しないように、ゲルコート３ａと
同様の方法で、樹脂押圧力に対抗して打ち消すような大
きさの対抗押圧力を凸状屈曲部１内面に加える。At this time, similarly to the gel coat 3a, the laminate 3b slightly shrinks due to natural curing, and a resin pressing force is applied to the outer surface of the mold 2. Therefore, in order to prevent the molding die 2 from being deformed by the resin pressing force, a counter pressing force of a magnitude that counteracts the resin pressing force is applied to the inner surface of the convex bending portion 1 in the same manner as the gel coat 3a.

【００３５】この場合の樹脂押圧力Ｐ２の大きさは、ゲ
ルコート３ａによる樹脂押圧力Ｐ１と同様に算出され
る。すなわち、ラミネート３ｂの収縮率を０．２％、ラ
ミネート３ｂの弾性率は７０００ＭＰａとすると、ラミ
ネート３ｂが成形型２を押す力Ｆ２＝７００×０．００
２×８００×１＝１．１２０ｋｇｆとなり、Ｐ２＝０．
００１３ｋｇｆ／ｍｍ2となる。したがって、対抗押圧
力の大きさＱ２も、Ｑ２＝０．００１３ｋｇｆ／ｍｍ2
となる。The magnitude of the resin pressing force P2 in this case is calculated in the same manner as the resin pressing force P1 by the gel coat 3a. That is, assuming that the contraction rate of the laminate 3b is 0.2% and the elastic modulus of the laminate 3b is 7000 MPa, the force F2 of pressing the mold 3 on the mold 2 is F2 = 700 × 0.00.
2 × 800 × 1 = 1.120 kgf, and P2 = 0.
0013 kgf / mm 2 . Therefore, the magnitude Q2 of the opposing pressing force is also Q2 = 0.0013 kgf / mm 2
Becomes

【００３６】なお、ラミネート３ｂを硬化させた後、ス
プレーガンより噴出される熱硬化性樹脂をラミネート３
ｂ表面に略均一に吹き付けてバック層を形成して硬化さ
せるばあいもある。After the laminate 3b is cured, the thermosetting resin ejected from the spray gun is applied to the laminate 3b.
There is a case where the back layer is formed by spraying the surface substantially uniformly to the surface b and then cured.

【００３７】また、補強繊維束として、ガラス繊維、炭
素繊維、ボロン繊維、アルミナ繊維などの無機繊維や、
ポリアミド繊維、ビニロン繊維、アクリル繊維などの有
機繊維が用いられる。また、熱硬化性樹脂として、不飽
和ポリエステル樹脂、ビニルエステル樹脂、エポキシ樹
脂などが用いられる。As the reinforcing fiber bundle, inorganic fibers such as glass fiber, carbon fiber, boron fiber and alumina fiber;
Organic fibers such as polyamide fiber, vinylon fiber and acrylic fiber are used. As the thermosetting resin, an unsaturated polyester resin, a vinyl ester resin, an epoxy resin, or the like is used.

【００３８】そして、硬化工程において、内部温度が６
０℃程度の熱風循環式加熱炉の中に、ゲルコート３ａ及
びラミネート３ｂが積層された成形型２を５分間程度に
投入してゲルコート３ａ及びラミネート３ｂを完全に熱
硬化させる。In the curing step, the internal temperature is 6
The mold 2 on which the gel coat 3a and the laminate 3b are laminated is put into a hot air circulation type heating furnace at about 0 ° C. for about 5 minutes to completely thermally cure the gel coat 3a and the laminate 3b.

【００３９】このとき、樹脂押圧力Ｐ３は、ゲルコート
３ａ及びラミネート３ｂの各樹脂押圧力の和、すなわち
Ｐ３＝Ｐ１＋Ｐ２で表される。上記条件においては、Ｐ
３＝Ｐ１＋Ｐ２＝０．００６＋０．００１３＝０．００
７３ｋｇｆ／ｍｍ2となる。したがって、対抗押圧力の
大きさＱ３も、Ｑ３＝０．００７３ｋｇｆ／ｍｍ2とな
る。At this time, the resin pressing force P3 is represented by the sum of the resin pressing forces of the gel coat 3a and the laminate 3b, that is, P3 = P1 + P2. Under the above conditions, P
3 = P1 + P2 = 0.006 + 0.0013 = 0.00
73 kgf / mm 2 . Therefore, the magnitude Q3 of the opposing pressing force is also Q3 = 0.0073 kgf / mm 2 .

【００４０】さらに、離型工程において、熱風循環式加
熱炉の中からゲルコート３ａ及びラミネート３ｂが積層
された成形型２を取り出し、成形型２とゲルコート３ａ
との間にバールなどの離型治具を差し込み、こじ起こす
ようにして成形型２から繊維強化プラスチック成形品４
を離型する。Further, in the releasing step, the mold 2 on which the gel coat 3a and the laminate 3b are laminated is taken out of the hot air circulation type heating furnace, and the mold 2 and the gel coat 3a are removed.
Between the molding die 2 and the fiber-reinforced plastic molded product 4
Release the mold.

【００４１】このとき、離型が完全に行われるまで成形
型２に繊維強化プラスチック成形品４の樹脂押圧力Ｐ３
が加わるため、完全離型するまで対抗押圧力Ｑ３を持続
させ、離型後に流体供給装置７を操作し、押圧袋６内の
流体１７を除去して除圧を行う。At this time, the resin pressing force P3 of the fiber-reinforced plastic molded product 4 is applied to the molding die 2 until the release is completely performed.
Therefore, the opposing pressing force Q3 is maintained until the mold is completely released, and after the mold is released, the fluid supply device 7 is operated to remove the fluid 17 in the pressure bag 6 and depressurize.

【００４２】このような繊維強化プラスチック成形品の
製造方法では、成形型２の外面に積層された樹脂層３の
硬化収縮によって成形型２の外面に加えられる樹脂押圧
力に対抗して、樹脂押圧力を打ち消すような対抗押圧力
を凸状屈曲部１内面に加えているため、樹脂押圧力と対
抗押圧力とが釣り合い、凸状屈曲部１に加えられる樹脂
押圧力を見かけ上なくすことができ、樹脂押圧力によっ
て凸状屈曲部１が内面下方へ膨らむように変形すること
を防止している。In such a method for producing a fiber-reinforced plastic molded product, the resin pressing force applied to the outer surface of the molding die 2 by the curing shrinkage of the resin layer 3 laminated on the outer surface of the molding die 2 is reduced. Since the opposing pressing force for canceling the pressure is applied to the inner surface of the convex bending portion 1, the resin pressing force and the opposing pressing force are balanced, and the resin pressing force applied to the convex bending portion 1 can be apparently eliminated. This prevents the convex bent portion 1 from being deformed so as to expand downward on the inner surface due to the resin pressing force.

【００４３】また、製造工程の各段階で順に硬化収縮率
の異なる樹脂層３が積層されて樹脂押圧力が大きさが経
時変化しても、この樹脂押圧力変化に応じて対抗押圧力
の大きさを変化させているため、製造工程全体にわたっ
て、凸状屈曲部１に加えられる樹脂押圧力を見かけ上な
くすことができる。Further, even if the resin pressing force varies with time due to the resin layers 3 having different curing shrinkage ratios being sequentially laminated at each stage of the manufacturing process, the magnitude of the opposing pressing force varies according to the change in the resin pressing force. Since the height is changed, the resin pressing force applied to the convex bending portion 1 can be apparently eliminated throughout the manufacturing process.

【００４４】図４は、同上と異なる繊維強化プラスチッ
ク成形品の製造方法を示す要部の縦断面図である。FIG. 4 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded product different from the above.

【００４５】図４に示すように、この繊維強化プラスチ
ック成形品の製造方法は、同上の製造方法と略同様の方
法である。異なる点は、補強手段５が、樹脂押圧力を打
ち消すように凸状屈曲部１内面を支持するように、凸状
屈曲部１の内空間９に充填された充填材８から形成され
ていることである。そして、充填材８としては、主剤に
収縮抑制剤、架橋剤、充填剤、補強材、硬化剤及び離型
剤を混合して形成された無収縮材１０を用いている。例
えば、主剤として液状の不飽和ポリエステル、収縮抑制
剤としてポリエチレン、架橋剤としてビニルモノマー、
充填剤として炭酸カルシウム、補強材としてガラス繊維
を用いる。実施例としては、７％の硬化収縮率を有する
不飽和ポリエステルを主剤として、線膨張係数１．５×
１０−４／℃のポリエチレンを３．５％混入させたもの
を用いる。As shown in FIG. 4, the method for producing the fiber-reinforced plastic molded article is substantially the same as the above-described production method. The difference is that the reinforcing means 5 is formed from a filler 8 filled in the inner space 9 of the convex bending portion 1 so as to support the inner surface of the convex bending portion 1 so as to cancel the resin pressing force. It is. As the filler 8, a non-shrink material 10 formed by mixing a shrinkage inhibitor, a crosslinking agent, a filler, a reinforcing material, a curing agent, and a release agent with a main component is used. For example, a liquid unsaturated polyester as a main component, polyethylene as a shrinkage inhibitor, a vinyl monomer as a crosslinking agent,
Calcium carbonate is used as a filler, and glass fiber is used as a reinforcing material. As an example, an unsaturated polyester having a curing shrinkage of 7% was used as a main component, and a linear expansion coefficient was 1.5 ×.
What mixed the polyethylene of 10-4 / degreeC with 3.5% is used.

【００４６】このような繊維強化プラスチック成形品の
製造方法では、硬化工程において、無収縮材１０のポリ
エチレンが溶融膨張して不飽和ポリエステルの硬化収縮
を補い、無収縮材１０の収縮率を０にしている。凸状屈
曲部１の内空間９に充填された無収縮材１０が収縮せず
に、凸状屈曲部１内面を支持しているため、樹脂押圧力
によって凸状屈曲部１が内面側へ膨らむように変形する
ことを防止している。In such a method for producing a fiber-reinforced plastic molded product, in the curing step, the polyethylene of the non-shrinkable material 10 melts and expands to compensate for the curing shrinkage of the unsaturated polyester, and the shrinkage of the non-shrinkable material 10 is reduced to zero. ing. Since the non-shrinkable material 10 filled in the inner space 9 of the convex bending portion 1 does not shrink and supports the inner surface of the convex bending portion 1, the convex bending portion 1 expands to the inner surface side by the resin pressing force. To prevent deformation.

【００４７】なお、収縮抑制剤として、ポリスチレン、
ポリ酢酸ビニル共重合体、ポリカプロラクトン、ポリメ
タクリル酸メチルなどを用いてもよい。As a shrinkage inhibitor, polystyrene,
Polyvinyl acetate copolymer, polycaprolactone, polymethyl methacrylate and the like may be used.

【００４８】図５は、同上と異なる繊維強化プラスチッ
ク成形品の製造方法を示す要部の縦断面図であり、
（ａ）は成形前であり、（ｂ）は硬化工程である。FIG. 5 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded article different from the above.
(A) is before molding, and (b) is a curing step.

【００４９】図５に示すように、この繊維強化プラスチ
ック成形品の製造方法は、同上の製造方法と略同様の方
法である。異なる点は、充填材８が、温度変化によって
膨縮自在の発泡材１１により形成されていることであ
る。この場合、発泡材１１としては、常温では未発泡状
態を維持し、所定の温度以上に昇温すると発泡して体積
膨張を起こす性質のものを用いる。As shown in FIG. 5, the method for producing this fiber-reinforced plastic molded product is substantially the same as the above-described production method. The difference is that the filler 8 is formed of a foam material 11 which can be expanded and contracted by a change in temperature. In this case, as the foam material 11, a material that maintains an unfoamed state at room temperature, foams when heated to a predetermined temperature or more, and causes volume expansion is used.

【００５０】このような性質を有する発泡材１１は、例
えば、ポリエチレン樹脂が５０％、エポキシ樹脂が４５
％混合された主剤に発泡剤及び架橋剤を５％混入して形
成する。そして、この材料から射出成形により１０００
×５００×３５０ｍｍ3直方体形状に成形した発泡材１
１を凸状屈曲部１内面に貼り付けた状態で成形を行う。
硬化工程において、内部温度が６０℃程度の熱風循環式
加熱炉の中に、ゲルコート３ａ、ラミネート３ｂ及び発
泡材１１を有する成形型２を５分間程度に投入した場
合、発泡材１１は４倍程度に体積膨張を起こして凸状屈
曲部１の内空間９に充満する。The foam material 11 having such properties is, for example, 50% polyethylene resin and 45% epoxy resin.
The mixture is formed by mixing 5% of a foaming agent and a cross-linking agent into the mixed base material. And, by injection molding from this material, 1000
× 500 × 350mm 3 foamed material 1 shaped into a rectangular parallelepiped
Molding is performed in a state in which 1 is attached to the inner surface of the convex bending portion 1.
In the curing step, when the mold 2 having the gel coat 3a, the laminate 3b and the foam material 11 is put into a hot air circulation type heating furnace having an internal temperature of about 60 ° C. for about 5 minutes, the foam material 11 is about four times larger. Then, the inner space 9 of the convex bending portion 1 is filled by volume expansion.

【００５１】このような繊維強化プラスチック成形品の
製造方法では、硬化工程時に発泡材１１が膨縮して凸状
屈曲部１内面を支持しているため、樹脂押圧力によって
凸状屈曲部１が内面側へ膨らむように変形することを防
止している。また、発泡材１１は非常に軽量であるた
め、持ち運び易く、作業性に優れている。In such a method for producing a fiber-reinforced plastic molded product, since the foam material 11 expands and contracts during the curing step to support the inner surface of the convex bent portion 1, the convex bent portion 1 is pressed by the resin. Deformation so as to swell toward the inner surface is prevented. Further, since the foam material 11 is very lightweight, it is easy to carry and excellent in workability.

【００５２】図６は、同上と異なる繊維強化プラスチッ
ク成形品の製造方法を示す要部の縦断面図である。FIG. 6 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded product different from the above.

【００５３】図６に示すように、この繊維強化プラスチ
ック成形品の製造方法は、同上の製造方法と略同様の方
法である。異なる点は、凸状屈曲部１の内空間９に空間
補助部材１２を設け、この空間補助部材１２外面と凸状
屈曲部１内面との間に充填材８又は発泡材１１を設けて
いることである。空間補助部材１２としては、安価で剛
性の高い材料を用い、凸状屈曲部１内面に接しない程度
の大きさの内空間９の形状に合わせた大きさに形成され
ている。例えば、空間補助部材１２として、比重が０．
６、曲げ強さが３５０ｋｇｆ／ｃｍ2、吸水率が４０％
の中庸パーティクルボードを、１５００×７００×４０
０ｍｍの大きさに形成したものを用いる。そして、あら
かじめ凸状屈曲部１内面に略均一に発泡材１１が貼着さ
れた成形型２の内空間９に空間補助部材１２を挿入し、
成形型２を熱風循環式加熱炉内に投入して硬化工程を行
う。As shown in FIG. 6, the method of manufacturing the fiber-reinforced plastic molded article is substantially the same as the above-described manufacturing method. The difference is that the space assisting member 12 is provided in the inner space 9 of the convex bending portion 1, and the filler 8 or the foam material 11 is provided between the outer surface of the space assisting member 12 and the inner surface of the convex bending portion 1. It is. The space assisting member 12 is formed of a material that is inexpensive and has high rigidity, and is formed in a size corresponding to the shape of the inner space 9 having such a size that the inner space 9 does not touch the inner surface of the convex bent portion 1. For example, the specific gravity of the space assisting member 12 is set to 0.1.
6, the bending strength of 350 kgf / cm 2, water absorption of 40%
Medium particle board of 1500 × 700 × 40
One formed to a size of 0 mm is used. Then, the space assisting member 12 is inserted into the inner space 9 of the molding die 2 in which the foam material 11 is pasted on the inner surface of the convex bending portion 1 substantially uniformly,
The molding die 2 is put into a hot-air circulation heating furnace to perform a curing step.

【００５４】このような繊維強化プラスチック成形品４
の成形型２では、熱風循環式加熱炉内の発泡材１１が体
積膨張を起こして凸状屈曲部１内面と空間補助部材１２
との間の隙間に充満し、凸状屈曲部１内面を支持してい
るため、樹脂押圧力によって凸状屈曲部１が内面側へ膨
らむように変形することを防止している。また、凸状屈
曲部１の内空間９の大部分を空間補助部材１２に占めさ
せ、残りの凸状屈曲部１内面近傍の狭い空間に充填材８
や発泡材１１を存在させることができるため、発泡材１
１などの充填材８を少量とすることができ、製造コスト
が低減できる。Such a fiber-reinforced plastic molded product 4
In the molding die 2, the foam material 11 in the hot air circulation type heating furnace undergoes volume expansion, and the inner surface of the convex bent portion 1 and the space auxiliary member 12
Is filled and the inner surface of the convex bending portion 1 is supported, so that the convex bending portion 1 is prevented from being deformed so as to expand toward the inner surface side due to the resin pressing force. Further, the space assisting member 12 occupies most of the inner space 9 of the convex bent portion 1, and the filler 8 fills the remaining narrow space near the inner surface of the convex bent portion 1.
And foam material 11 can be present,
The amount of the filler 8 such as 1 can be reduced, and the manufacturing cost can be reduced.

【００５５】図７は、同上と異なる繊維強化プラスチッ
ク成形品の製造方法を示す要部の縦断面図であり、
（ａ）は成形前であり、（ｂ）硬化工程である。FIG. 7 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded product different from the above.
(A) is before molding and (b) is a curing step.

【００５６】図７に示すように、この繊維強化プラスチ
ック成形品の製造方法は、同上の製造方法と略同様の方
法である。異なる点は、形状記憶効果を利用するアクチ
ュエータ装置２０から補強手段５を構成したことであ
る。As shown in FIG. 7, the method for producing this fiber-reinforced plastic molded product is substantially the same as the above-described production method. The difference is that the reinforcing means 5 is constituted by the actuator device 20 utilizing the shape memory effect.

【００５７】形状記憶効果とは、ある形状の試料を臨界
温度よりも高い温度から臨界温度よりも低い温度に急冷
して低温相を形成し、これを変形させた後再び加熱を行
い、臨界温度を超えると逆変態が起こり、形状が回復す
る現象をいう。The shape memory effect means that a sample of a certain shape is rapidly cooled from a temperature higher than the critical temperature to a temperature lower than the critical temperature to form a low-temperature phase. When it exceeds, it means a phenomenon that reverse transformation occurs and the shape recovers.

【００５８】アクチュエータ装置２０は、凸状屈曲部１
の角部内面を押圧する円弧状の押圧片２０ａと、この押
圧片２０ａの一端部に一端が固定され、他端が不動状態
に固定された形状記憶効果を有するＴｉＮｉ合金からな
る形状記憶コイルバネ２０ｂと、押圧片２０ａの他端部
に一端が固定され、他端が不動状態に固定されたバイア
スコイルバネ２０ｃと、押圧片２０ａを両バネの引張り
力によりシーソーのように揺動する揺動軸２０ｄとから
構成されている。形状記憶コイルバネ２０ｂの臨界温度
が６０℃よりも小さものを用いる。常温時、形状記憶コ
イルバネ２０ｂが伸びた状態で、押圧片２０ａは凸状屈
曲部１内面に当接していない。The actuator device 20 includes the convex bent portion 1
And a shape memory coil spring 20b made of a TiNi alloy having a shape memory effect in which one end is fixed to one end of the pressing piece 20a and the other end is fixed in an immobile state. And a bias coil spring 20c having one end fixed to the other end of the pressing piece 20a and the other end fixed in an immobile state, and a swing shaft 20d for swinging the pressing piece 20a like a seesaw by the tensile force of both springs. It is composed of A shape memory coil spring having a critical temperature lower than 60 ° C. is used. At normal temperature, with the shape memory coil spring 20b extended, the pressing piece 20a is not in contact with the inner surface of the convex bending portion 1.

【００５９】このようなアクチュエータ装置２０では、
硬化工程において、熱風循環式加熱炉内の温度が形状記
憶コイルバネ２０ｂの臨界温度よりも高い６０℃になる
ため、形状記憶効果によって形状記憶コイルバネ２０ｂ
が変形して縮み、形状記憶コイルバネ２０ｂに引張られ
てシーソー状に支持された押圧片２０ａが傾き、バイア
スコイルバネ２０ｃ側の押圧片２０ａ端部が凸状屈曲部
１内面に当接して成形型２を支持する。この押圧片２０
ａの支持による圧力が繊維強化プラスチック成形品４の
硬化収縮による樹脂押圧力を打ち消すため、樹脂押圧力
によって凸状屈曲部１が内面側へ膨らむように変形する
ことを防止している。In such an actuator device 20,
In the curing step, the temperature in the hot air circulating heating furnace becomes 60 ° C., which is higher than the critical temperature of the shape memory coil spring 20b.
The pressing piece 20a, which is pulled by the shape memory coil spring 20b and supported in a seesaw shape, tilts, and the end of the pressing piece 20a on the side of the bias coil spring 20c abuts on the inner surface of the convex bending portion 1 to form the molding die 2. I support. This pressing piece 20
Since the pressure due to the support of “a” negates the resin pressing force caused by the curing shrinkage of the fiber-reinforced plastic molded product 4, the convex bending portion 1 is prevented from being deformed so as to expand toward the inner surface side due to the resin pressing force.

【００６０】なお、形状記憶コイルバネ２０ｂの材料と
して、ＴｉＮｉ合金以外にＣｕＺｎＡｌ合金などの銅系
金属材料や、ポリウレタン、トランス−１．４−ポリイ
ソプレン、スチレンブタジエン共重合体などの樹脂系材
料がある。上記樹脂系材料の臨界温度はそれぞれ、−３
０〜７０℃、６７℃、６０℃である。As the material of the shape memory coil spring 20b, besides TiNi alloy, there are copper-based metal materials such as CuZnAl alloy, and resin-based materials such as polyurethane, trans-1.4-polyisoprene, and styrene-butadiene copolymer. . The critical temperatures of the above resin materials are respectively -3
0 to 70 ° C, 67 ° C, and 60 ° C.

【００６１】図８は、同上と異なる繊維強化プラスチッ
ク成形品の製造方法を示す要部の縦断面図である。FIG. 8 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded product different from the above.

【００６２】図８に示すように、この繊維強化プラスチ
ック成形品の製造方法は、同上の製造方法と略同様の方
法である。異なる点は、離型工程において、離型治具１
８のバールの先端を繊維強化プラスチック成形品４と成
形型２との間に差し込み、てこの原理で繊維強化プラス
チック成形品４ををこじ起こときに、バールによる成形
型２への押圧力に対向してバール挿入位置の成形型２下
面にバール対向押圧力を加えることである。例えば、枠
型１５の枠材１５ａの間にバール対向押圧力を発生する
圧力負荷装置１９を配設する。そして、接触面積５００
ｍｍ2のバールによって成形型２へ加わる力を５０ｋｇ
とすると、バールの押圧力は０．１ｋｇｆ／ｍｍ2とな
るので、圧力負荷装置１９を操作してバール対向押圧力
を０．１ｋｇｆ／ｍｍ2に設定する。As shown in FIG. 8, the method for producing this fiber-reinforced plastic molded product is substantially the same as the above-mentioned production method. The difference is that the release jig 1
8 is inserted between the fiber-reinforced plastic molded product 4 and the molding die 2 to oppose the pressing force to the molding die 2 by the bar when the fiber-reinforced plastic molded product 4 is prying up by the leverage principle. Then, a crowbar opposing pressing force is applied to the lower surface of the molding die 2 at the crowbar insertion position. For example, a pressure load device 19 that generates a crowbar opposing pressing force is disposed between the frame members 15a of the frame die 15. And a contact area of 500
50 kg of force applied to the mold 2 by a bar of mm 2
When the pressing force of the bar since the 0.1 kgf / mm 2, to set the bar counter pressure to 0.1 kgf / mm 2 by operating the pressure loading device 19.

【００６３】このような繊維強化プラスチック成形品の
製造方法では、バールによる離型動作によって、成形型
２上面に加わる押圧力と成形型２下面に加えるバール対
向押圧力とが釣り合うため、バールのこじ起こしによる
成形型２の変形を防止している。In such a method of manufacturing a fiber-reinforced plastic molded product, the pressing force applied to the upper surface of the molding die 2 and the opposing pressing force applied to the lower surface of the molding die 2 are balanced by the release operation using the burl. The deformation of the mold 2 due to the raising is prevented.

【００６４】[0064]

【発明の効果】請求項１記載の発明では、成形型の外面
に積層された樹脂層の硬化収縮によって成形型の外面に
加えられる樹脂押圧力に対抗して、樹脂押圧力を打ち消
すような対抗押圧力を凸状屈曲部内面に加えているた
め、樹脂押圧力と対抗押圧力とが釣り合い、凸状屈曲部
に加えられる樹脂押圧力を見かけ上なくすことができ、
樹脂押圧力によって凸状屈曲部が内面下方へ膨らむよう
に変形することを防止している。したがって、樹脂層の
硬化収縮による成形型の変形を防止するとともに、成形
型にクラックが発生したり、割れたりすることがなく、
成形型の寿命が向上している。According to the first aspect of the present invention, the resin pressing force applied to the outer surface of the mold by the curing shrinkage of the resin layer laminated on the outer surface of the mold is counteracted to cancel the resin pressing force. Since the pressing force is applied to the inner surface of the convex bending portion, the resin pressing force and the opposing pressing force are balanced, and the resin pressing force applied to the convex bending portion can be apparently eliminated.
The convex bending portion is prevented from being deformed so as to expand downward on the inner surface due to the resin pressing force. Therefore, while preventing deformation of the mold due to curing shrinkage of the resin layer, the mold does not crack or break,
The life of the mold has been improved.

【００６５】また、請求項２記載の発明では、製造工程
の各段階で順に硬化収縮率の異なる樹脂層が積層されて
樹脂押圧力が大きさが経時変化しても、この樹脂押圧力
変化に応じて対抗押圧力の大きさを変化させているた
め、製造工程全体にわたって、凸状屈曲部に加えられる
樹脂押圧力を見かけ上なくすことができる。Further, according to the second aspect of the present invention, even if resin layers having different curing shrinkage rates are sequentially laminated at each stage of the manufacturing process and the magnitude of the resin pressing force changes with time, the change in the resin pressing force does not change. Since the magnitude of the opposing pressing force is changed accordingly, the resin pressing force applied to the convex bending portion can be apparently eliminated throughout the manufacturing process.

【００６６】また、請求項３記載の発明では、成形型の
外面に積層された樹脂層の硬化収縮によって成形型の外
面に加えられる樹脂押圧力に対抗して、補強手段が樹脂
押圧力を打ち消すような対抗押圧力を凸状屈曲部内面に
加えているため、樹脂押圧力と対抗押圧力とが釣り合
い、凸状屈曲部に加えられる樹脂押圧力を見かけ上なく
すことができ、樹脂押圧力によって凸状屈曲部が内面側
へ膨らむように変形することを防止している。According to the third aspect of the present invention, the reinforcing means cancels the resin pressing force against the resin pressing force applied to the outer surface of the mold by the curing shrinkage of the resin layer laminated on the outer surface of the mold. Since such an opposing pressing force is applied to the inner surface of the convex bending portion, the resin pressing force and the opposing pressing force are balanced, and the resin pressing force applied to the convex bending portion can be apparently eliminated. The convex bent portion is prevented from being deformed so as to expand toward the inner surface side.

【００６７】また、請求項４記載の発明では、補強手段
の流体供給装置から流体が押圧袋内に供給されて押圧袋
が膨張し、押圧袋外面が凸状屈曲部内面を押圧して対抗
押圧力を形成しているため、凸状屈曲部内面に均等に対
抗押圧力を加えることができる。According to the fourth aspect of the present invention, the fluid is supplied from the fluid supply device of the reinforcing means into the pressure bag, the pressure bag expands, and the outer surface of the pressure bag presses the inner surface of the convex bent portion to push against the pressure bag. Since the pressure is formed, the opposing pressing force can be evenly applied to the inner surface of the convex bending portion.

【００６８】また、請求項５記載の発明では、凸状屈曲
部の内空間に充填された充填材によって、樹脂押圧力を
打ち消すように凸状屈曲部内面を支持しているため、凸
状屈曲部内面に均等に対抗押圧力を加えることができる
とともに、補強手段の構造が簡単である。According to the fifth aspect of the present invention, since the inner surface of the convex bent portion is supported by the filler filling the inner space of the convex bent portion so as to cancel the resin pressing force, the convex bent portion is formed. The opposing pressing force can be evenly applied to the inner surface of the portion, and the structure of the reinforcing means is simple.

【００６９】また、請求項６記載の発明では、凸状屈曲
部の内空間に充填された無収縮材が収縮せずに、凸状屈
曲部内面を支持しているため、対抗押圧力を形成する充
填材を簡単に形成できる。According to the sixth aspect of the present invention, since the non-shrinkable material filled in the inner space of the convex bent portion does not shrink and supports the inner surface of the convex bent portion, the opposing pressing force is formed. Filling material can be easily formed.

【００７０】また、請求項７記載の発明では、周囲温度
を上げて繊維強化プラスチック成形品を硬化させる際
に、この温度上昇により発泡材が膨張して凸状屈曲部の
内空間を満たし、凸状屈曲部内面を支持しているため、
対抗押圧力を形成する充填材を簡単に形成できる。ま
た、発泡材は非常に軽量であるため、持ち運び易く、作
業性に優れている。According to the seventh aspect of the present invention, when the ambient temperature is raised to cure the fiber-reinforced plastic molded product, the temperature rise causes the foam material to expand and fill the inner space of the convex bent portion, and Because it supports the inner surface of the bend,
It is possible to easily form the filler material that forms the opposing pressing force. Further, since the foam material is very lightweight, it is easy to carry and excellent in workability.

【００７１】また、請求項８記載の発明では、凸状屈曲
部の内空間の大部分を空間補助部材に占めさせ、残りの
凸状屈曲部内面近傍の狭い空間に充填材や発泡材が存在
させることができるため、充填材や発泡材の少量とする
ことができ、製造コストが低減できる。According to the eighth aspect of the present invention, most of the inner space of the convex bent portion is occupied by the space assisting member, and the filler or the foam material exists in the narrow space near the inner surface of the remaining convex bent portion. Therefore, the amount of the filler or the foamed material can be reduced, and the manufacturing cost can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施形態の繊維強化プラスチック成形
品の製造方法を示す要部の縦断面図であり、（ａ）は成
形前、（ｂ）、（ｃ）は樹脂層の形成工程、（ｄ）は硬
化工程、（ｅ）は離型工程、（ｆ）は成形後である。FIG. 1 is a longitudinal sectional view of a main part showing a method for manufacturing a fiber-reinforced plastic molded product according to an embodiment of the present invention, wherein (a) is before molding, (b) and (c) are resin layer forming steps, (D) is a curing step, (e) is a release step, and (f) is after molding.

【図２】同上の繊維強化プラスチック成形品の製造方法
に用いる成形型の平面図である。FIG. 2 is a plan view of a molding die used in the method for producing a fiber-reinforced plastic molded product according to the first embodiment.

【図３】同上の繊維強化プラスチック成形品の製造方法
において、対抗押圧力の経時変化を示すグラフ図であ
る。FIG. 3 is a graph showing a change over time of a pressing force in the method for producing a fiber-reinforced plastic molded product according to the first embodiment.

【図４】同上と異なる繊維強化プラスチック成形品の製
造方法を示す要部の縦断面図である。FIG. 4 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded product different from the above.

【図５】同上と異なる繊維強化プラスチック成形品の製
造方法を示す要部の縦断面図であり、（ａ）は成形前で
あり、（ｂ）は硬化工程である。FIG. 5 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded product different from the above, in which (a) is before molding and (b) is a curing step.

【図６】同上と異なる繊維強化プラスチック成形品の製
造方法を示す要部の縦断面図である。FIG. 6 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded product different from the above.

【図７】同上と異なる繊維強化プラスチック成形品の製
造方法を示す要部の縦断面図であり、（ａ）は成形前で
あり、（ｂ）硬化工程である。FIG. 7 is a longitudinal sectional view of a main part showing a method for producing a fiber-reinforced plastic molded product different from the above, in which (a) is before molding and (b) is a curing step.

【図８】同上と異なる繊維強化プラスチック成形品の製
造方法を示す要部の縦断面図である。FIG. 8 is a longitudinal sectional view of a main part showing a method of manufacturing a fiber-reinforced plastic molded product different from the above.

【図９】従来の繊維強化プラスチック成形品の製造方法
を示す要部の縦断面図である。FIG. 9 is a longitudinal sectional view of a main part showing a conventional method for producing a fiber-reinforced plastic molded product.

【符号の説明】[Explanation of symbols]

１ 凸状屈曲部 ２ 成形型 ２ａ 下側平坦部 ２ｂ 立ち上げ部 ２ｃ 上側平坦部 ３ 樹脂層 ３ａ ゲルコート ３ｂ ラミネート ４ 繊維強化プラスチック成形品４ ５ 補強手段 ６ 押圧袋 ７ 流体供給装置 ８ 充填材 ９ 内空間 １０ 無収縮材 １１ 発泡材 １２ 空間補助部材 １４ 流体供給パイプ １５ 枠型 １５ａ 枠材 １６ 支持部材 １７ 流体 １８ 離型治具 １９ 圧力負荷装置 ２０ アクチュエータ装置 ２０ａ 押圧片 ２０ｂ 形状記憶コイルバネ ２０ｃ バイアスコイルバネ ２０ｄ 揺動軸 ２１ 補強部材 ２２ 雄型 ２３ 雌型 DESCRIPTION OF SYMBOLS 1 Convex bending part 2 Mold 2a Lower flat part 2b Rise part 2c Upper flat part 3 Resin layer 3a Gel coat 3b Laminate 4 Fiber reinforced plastic molded article 4 5 Reinforcement means 6 Press bag 7 Fluid supply device 8 Filler 9 Inside Space 10 Non-shrink material 11 Foam material 12 Space auxiliary member 14 Fluid supply pipe 15 Frame type 15a Frame material 16 Support member 17 Fluid 18 Release jig 19 Pressure load device 20 Actuator device 20a Pressing piece 20b Shape memory coil spring 20c Bias coil spring 20d Oscillating shaft 21 Reinforcing member 22 Male type 23 Female type

フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２９Ｌ 22:00 Continued on the front page (51) Int.Cl. 6 Identification code FI B29L 22:00

Claims (8)

【特許請求の範囲】[Claims] 【請求項１】 外方に凸状屈曲部を有する成形型の外面
に樹脂層を積層し、この樹脂層を硬化させた後に離型し
て行われる繊維強化プラスチック成形品の製造方法にお
いて、樹脂層の硬化収縮によって凸状屈曲部外面に加え
られる樹脂押圧力に対抗し、この樹脂押圧力を打ち消す
ような対抗押圧力を凸状屈曲部内面に加えることを特徴
とする繊維強化プラスチック成形品の製造方法。1. A method for producing a fiber-reinforced plastic molded product, comprising: laminating a resin layer on an outer surface of a mold having an outwardly convex bent portion, curing the resin layer, and releasing the resin layer. A fiber-reinforced plastic molded product characterized in that it opposes the resin pressing force applied to the outer surface of the convex bending portion due to the curing shrinkage of the layer, and applies an opposing pressing force to the inner surface of the convex bending portion to cancel the resin pressing force. Production method. 【請求項２】 樹脂押圧力の大きさ変化に応じて対抗押
圧力の大きさを変化させることを特徴とする請求項１記
載の繊維強化プラスチック成形品の製造方法。2. The method for producing a fiber-reinforced plastic molded product according to claim 1, wherein the magnitude of the opposing pressing force is changed according to the change in the resin pressing force. 【請求項３】 凸状屈曲部を含む外面に樹脂層が積層さ
れて繊維強化プラスチック成形品が形成される繊維強化
プラスチック成形品の成形型において、樹脂層の硬化収
縮によって凸状屈曲部外面に加えられる樹脂押圧力に対
抗し、この樹脂押圧力を打ち消すように凸状屈曲部内面
を支持する補強手段を具備してなることを特徴とする繊
維強化プラスチック成形品の成形型。3. A fiber-reinforced plastic molded product in which a resin layer is laminated on an outer surface including a convex bent portion to form a fiber-reinforced plastic molded product, wherein the resin layer hardens and shrinks to form an outer surface of the convex bent portion. A molding die for a fiber-reinforced plastic molded article, comprising reinforcing means for supporting an inner surface of a convex bent portion so as to oppose an applied resin pressing force and cancel the resin pressing force. 【請求項４】 膨張によりその外面が凸状屈曲部内面に
当接して支持する押圧袋と、この押圧袋に流体を注入し
て膨張させる流体供給装置とから補強手段を形成してな
ることを特徴とする請求項３記載の繊維強化プラスチッ
ク成形品の成形型。4. A pressurizing bag, the outer surface of which is in contact with an inner surface of a convex bent portion by expansion to support the pressurizing bag, and a fluid supply device for injecting a fluid into the pressurizing bag to expand the pressurizing bag. The molding die for a fiber-reinforced plastic molded product according to claim 3. 【請求項５】 樹脂押圧力を打ち消すように凸状屈曲部
内面を支持するように、充填材を凸状屈曲部の内空間に
充填して補強手段を形成してなることを特徴とする請求
項３記載の繊維強化プラスチック成形品の成形型。5. A reinforcing means formed by filling a filling material into an inner space of the convex bent portion so as to support the inner surface of the convex bent portion so as to cancel the resin pressing force. Item 6. A molding die of the fiber-reinforced plastic molded product according to Item 3. 【請求項６】 無収縮材により充填材を形成してなるこ
とを特徴とする請求項５記載の繊維強化プラスチック成
形品の成形型。6. The molding die for a fiber-reinforced plastic molded product according to claim 5, wherein the filler is formed of a non-shrinkable material. 【請求項７】 温度変化によって膨縮自在の発泡材によ
り充填材を形成してなることを特徴とする請求項５記載
の繊維強化プラスチック成形品の成形型。7. The molding die for a fiber-reinforced plastic molded product according to claim 5, wherein the filler is formed of a foam material which can be expanded and contracted by a change in temperature. 【請求項８】 凸状屈曲部の内空間に空間補助部材を設
け、この空間補助部材外面と凸状屈曲部内面との間に充
填材を設けてなることを特徴とする請求項５乃至７記載
の繊維強化プラスチック成形品の成形型。8. A space assisting member is provided in an inner space of the convex bending portion, and a filler is provided between an outer surface of the space assisting member and an inner surface of the convex bending portion. A molding die of the fiber-reinforced plastic molded product described in the above.
JP07909998A 1998-03-26 1998-03-26 Method for producing fiber-reinforced plastic molded product and molding die thereof Expired - Fee Related JP3528582B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP07909998A JP3528582B2 (en) 1998-03-26 1998-03-26 Method for producing fiber-reinforced plastic molded product and molding die thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP07909998A JP3528582B2 (en) 1998-03-26 1998-03-26 Method for producing fiber-reinforced plastic molded product and molding die thereof

Publications (2)

Publication Number Publication Date
JPH11268067A true JPH11268067A (en) 1999-10-05
JP3528582B2 JP3528582B2 (en) 2004-05-17

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007003011A1 (en) * 2005-07-05 2007-01-11 Quickstep Technologies Pty Ltd Composite component production using fluid density and pressure
US8002926B2 (en) 2005-03-22 2011-08-23 Quickstep Technologies Pty Ltd. Composite tube production
WO2013075694A1 (en) * 2011-11-22 2013-05-30 Premium Aerotec Gmbh Forming a profiled prepreg component
US8580176B2 (en) 2001-01-25 2013-11-12 Quickstep Technology Pty Ltd. Method of producing composite or bonded metal components
US8741092B2 (en) 2000-03-03 2014-06-03 Quickstep Technologies Pty Ltd. Production, forming, bonding, joining and repair systems for composite and metal components
CN109940837A (en) * 2019-04-15 2019-06-28 泉州市泉港区新联鑫通工业设计有限公司 A kind of liftout attachment of plastic mould

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8741092B2 (en) 2000-03-03 2014-06-03 Quickstep Technologies Pty Ltd. Production, forming, bonding, joining and repair systems for composite and metal components
US8580176B2 (en) 2001-01-25 2013-11-12 Quickstep Technology Pty Ltd. Method of producing composite or bonded metal components
US8002926B2 (en) 2005-03-22 2011-08-23 Quickstep Technologies Pty Ltd. Composite tube production
WO2007003011A1 (en) * 2005-07-05 2007-01-11 Quickstep Technologies Pty Ltd Composite component production using fluid density and pressure
WO2013075694A1 (en) * 2011-11-22 2013-05-30 Premium Aerotec Gmbh Forming a profiled prepreg component
EP2782747B1 (en) * 2011-11-22 2016-04-27 Premium AEROTEC GmbH Deforming a profiled prepreg component
US10737415B2 (en) 2011-11-22 2020-08-11 Premium Aerotec Gmbh Forming a profiled prepreg component
CN109940837A (en) * 2019-04-15 2019-06-28 泉州市泉港区新联鑫通工业设计有限公司 A kind of liftout attachment of plastic mould

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