JPH04201243A - Preformable core material and resin molding method - Google Patents
Preformable core material and resin molding methodInfo
- Publication number
- JPH04201243A JPH04201243A JP2333057A JP33305790A JPH04201243A JP H04201243 A JPH04201243 A JP H04201243A JP 2333057 A JP2333057 A JP 2333057A JP 33305790 A JP33305790 A JP 33305790A JP H04201243 A JPH04201243 A JP H04201243A
- Authority
- JP
- Japan
- Prior art keywords
- core material
- molding method
- nonwoven fabric
- resin
- resin molding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Moulding By Coating Moulds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は自動車に部品に用いられる強化プラスチック製
品の樹脂成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a resin molding method for reinforced plastic products used as parts in automobiles.
（従来の技術）
近年、自動車には強化プラスチック製品が多数使用され
ている。以下、第２図を参照して自動車に用いられる段
部か多い強化プラスチック製品の樹脂成形方法について
説明する。(Prior Art) In recent years, many reinforced plastic products have been used in automobiles. Hereinafter, a resin molding method for a reinforced plastic product with many steps used in automobiles will be explained with reference to FIG.
第２図は例えば、自動車に用いられるリッド（ふた）°
の樹脂成形方法について説明する。まず、第２図（Ａ）
に示すように発泡不織布（心材）１１を同図（Ｂ）に示
すように段部が多い成形型１２に入れて、同図（Ｃ）に
示すように締め上げた後、樹脂を注入して上記発泡不織
布１１に樹脂を含侵させていた。この樹脂の注入はＲＴ
Ｍ（Ｒｅｓｉｎ ｔｒａｎｓｆｅｒ ｍｏｌｄｉｎｇ）
により行われていた。Figure 2 shows, for example, a lid used in a car.
The resin molding method will be explained. First, Figure 2 (A)
As shown in the figure, a foamed nonwoven fabric (core material) 11 is placed in a mold 12 with many steps as shown in the figure (B), and after tightening as shown in the figure (C), resin is injected. The foamed nonwoven fabric 11 was impregnated with resin. The injection of this resin is RT
M (Resin transfer molding)
It was carried out by
（発明が解決しようとする課題）
上記の工程により成形された製品は成形型１２の段部が
多いために、型を締め上げたときに発泡不織布（心材）
１１の周辺が中心方向に引っ張られるため、樹脂を注入
後の製品の周辺部には発泡不織布１１がない箇所が存在
してしまい、強度的に問題が発生していた。(Problem to be solved by the invention) Since the product molded by the above process has many stepped parts in the mold 12, when the mold is tightened, the foamed nonwoven fabric (core material)
Since the periphery of the foamed nonwoven fabric 11 is pulled toward the center, there are areas where the foamed nonwoven fabric 11 is not present at the periphery of the product after the resin has been injected, resulting in a strength problem.
さらに、発泡不織布１１を成形型１２にセットするのに
も時間かかかり、ＲＴＭのサイクルタイムも長くなって
いた。Furthermore, it took time to set the foamed nonwoven fabric 11 in the mold 12, and the RTM cycle time also became long.
本発明は上記の点に鑑みてなされたもので、その目的は
ＲＴＭにより成形される強化プラスチック製品の強度を
均一とじ、しかもＲＴＭのサイクルタイムも短くするこ
とができる樹脂成形方法を提供することにある。The present invention has been made in view of the above points, and its purpose is to provide a resin molding method that can uniformly bind the strength of reinforced plastic products molded by RTM and shorten the RTM cycle time. be.
［発明の構成］
（課題を解決するための手段）
請求項第１項によれば、芯材に金網部材が埋設されてい
ることを特徴とする予備成形可能な芯材が提供される。[Structure of the Invention] (Means for Solving the Problems) According to claim 1, there is provided a preformable core material characterized in that a wire mesh member is embedded in the core material.
請求項第２項によれば、金網部材が埋設された芯材を圧
搾して予め芯材の型を作る第１の工程と、この第１の工
程で作られた芯材の不要部分を裁断する第２の工程と、
この第２の工程で作られた芯材を樹脂を注入する第２の
金型に入れて芯材に樹脂を含侵させる第３の工程とから
なる樹脂成形方法が提供される。According to claim 2, a first step of compressing the core material in which the wire mesh member is embedded to form a shape of the core material in advance, and cutting unnecessary portions of the core material made in this first step. A second step of
A resin molding method is provided which includes a third step in which the core material produced in the second step is placed in a second mold into which resin is injected and the core material is impregnated with resin.
（作用）
請求項第１項によれば、発泡不織布に金属製ネットを埋
設しておくことにより、圧搾により予備成形される。(Function) According to claim 1, by embedding a metal net in the foamed nonwoven fabric, the fabric is preformed by compression.
請求項第２項によれば、第１の工程及び第２の工程で芯
材を予め第２の金型と同一形状としておき、第３の工程
で芯材に樹脂を含侵さている。According to claim 2, the core material is previously made into the same shape as the second mold in the first step and the second step, and the core material is impregnated with resin in the third step.
（実施例）
以下図面を参照して本発明の一実施例について説明する
。第１図（Ａ）は予備成形可能な芯材を示す断面図であ
る。第１図（Ａ）において２１は芯材として用いられる
発泡不織布である。この発泡不織布２１はポリエステル
繊維２２及び球状微粒子（マイクロバルーン）２３によ
り構成される。さらに、この発泡不織布２１内に金網２
４が埋設されている。(Example) An example of the present invention will be described below with reference to the drawings. FIG. 1(A) is a sectional view showing a core material that can be preformed. In FIG. 1(A), 21 is a foamed nonwoven fabric used as a core material. This foamed nonwoven fabric 21 is composed of polyester fibers 22 and spherical fine particles (microballoons) 23. Furthermore, a wire mesh 2 is placed inside this foamed nonwoven fabric 21.
4 are buried.
そして、第１図（Ａ）に示すように金網２４が埋設され
た発泡不織布２１をＲＴＭに使用する第２の金型とほぼ
同一の形状を有する第１の金型（図示しない）で圧搾し
同図（Ｂ）に示すように、第２の金型と段部形状か同一
形状を有する発泡不織布２１を予め成形する。Then, as shown in FIG. 1(A), the foamed nonwoven fabric 21 with the wire mesh 24 embedded therein is compressed with a first mold (not shown) having almost the same shape as the second mold used for RTM. As shown in FIG. 3B, a foamed nonwoven fabric 21 having a step shape or the same shape as the second mold is molded in advance.
次に、同図（Ｃ）に示すように、第２の金型の外枠２５
に合うように上記発泡不織布２１を裁断する。Next, as shown in the same figure (C), the outer frame 25 of the second mold is
The foamed nonwoven fabric 21 is cut to fit.
この結果、金網２４か埋設された発泡不織布２１は第２
の金型と外枠も同一形状となる。As a result, the foamed nonwoven fabric 21 buried in the wire mesh 24 is
The mold and outer frame also have the same shape.
そして、金網２４か埋設された発泡不織布２１に第２の
金型に入れ、ＲＴＭにより樹脂を注入する。これにより
、樹脂が発泡不織布２１内に含侵し、強化プラスチック
製品が成形される。Then, the wire mesh 24 or the foamed nonwoven fabric 21 embedded therein is placed in a second mold, and resin is injected by RTM. As a result, the resin is impregnated into the foamed nonwoven fabric 21, and a reinforced plastic product is molded.
このようにして成形された強化プラスチック製品内には
発泡不織布２１が均一に存在しているので、製品の強度
を向上させることができる。Since the foamed nonwoven fabric 21 is uniformly present in the reinforced plastic product molded in this manner, the strength of the product can be improved.
さらに、第１図（Ａ）に示すような金網２４が埋設され
た発泡不織布２１を帯状に構成しておき、同図（Ｃ）の
裁断を流れ作業で行うことにより、ＲＴＭでの樹脂の注
入のライフタイムを従来より短くすることができる。Furthermore, by configuring the foamed nonwoven fabric 21 in which the wire mesh 24 is embedded as shown in FIG. 1(A) into a band shape and cutting it as shown in FIG. life time can be made shorter than before.
［発明の効果］
以上詳述したように本発明によれば、ＲＴＭにより成形
される強化プラスチック製品の強度を均一とし、しかも
ＲＴＭのサイクルタイムも短くすることかできる樹脂成
形方法を提供することができる。[Effects of the Invention] As detailed above, according to the present invention, it is possible to provide a resin molding method that can make the strength of reinforced plastic products molded by RTM uniform and shorten the RTM cycle time. can.
第１図は本発明の一実施例に係わる予備成形可能な芯材
及び樹脂成形方法を示す図、第２図は従来の樹脂成形方
法を示す図である。
２１・・・発泡不織布、２２・・・ポリエステル繊維、
２３・・・球状微粒子、２４・・・金網。
出願人代理人 弁理士 鈴江 武彦
（Ａ）
（Ｂ）
第１図
（Ａ）
（Ｂ）
（Ｃ）
第２図FIG. 1 is a diagram showing a preformable core material and a resin molding method according to an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional resin molding method. 21... Foamed nonwoven fabric, 22... Polyester fiber,
23... Spherical fine particles, 24... Wire mesh. Applicant's agent Patent attorney Takehiko Suzue (A) (B) Figure 1 (A) (B) (C) Figure 2
Claims (2)
る予備成形可能な芯材。(1) A core material that can be preformed, characterized in that a wire mesh member is embedded in the core material.
型を作る第１の工程と、この第１の工程で作られた芯材
の不要部分を裁断する第２の工程と、この第２の工程で
作られた芯材を樹脂を注入する上記第１の金型と同一の
形状を有する第２の金型に入れて芯材に樹脂を含侵させ
る第３の工程とからなる樹脂成形方法。(2) A first step of compressing the core material in which the wire mesh member is embedded to make a shape of the core material in advance, and a second step of cutting out unnecessary parts of the core material made in the first step. and a third step in which the core material made in this second step is placed in a second mold having the same shape as the first mold in which resin is injected, and the core material is impregnated with resin. A resin molding method consisting of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2333057A JPH04201243A (en) | 1990-11-29 | 1990-11-29 | Preformable core material and resin molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2333057A JPH04201243A (en) | 1990-11-29 | 1990-11-29 | Preformable core material and resin molding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04201243A true JPH04201243A (en) | 1992-07-22 |
Family
ID=18261786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2333057A Pending JPH04201243A (en) | 1990-11-29 | 1990-11-29 | Preformable core material and resin molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04201243A (en) |
-
1990
- 1990-11-29 JP JP2333057A patent/JPH04201243A/en active Pending
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