JPS63159036A - Manufacture of fiber reinforced plastic cylindrical body - Google Patents
Manufacture of fiber reinforced plastic cylindrical bodyInfo
- Publication number
- JPS63159036A JPS63159036A JP61310026A JP31002686A JPS63159036A JP S63159036 A JPS63159036 A JP S63159036A JP 61310026 A JP61310026 A JP 61310026A JP 31002686 A JP31002686 A JP 31002686A JP S63159036 A JPS63159036 A JP S63159036A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- cylindrical
- fiber layer
- pores
- cylindrical 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 229920002430 Fibre-reinforced plastic Polymers 0.000 title claims description 5
- 239000011151 fibre-reinforced plastic Substances 0.000 title claims description 5
- 239000000835 fiber Substances 0.000 claims abstract description 34
- 239000011148 porous material Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 7
- 239000011800 void material Substances 0.000 claims description 6
- 239000003190 viscoelastic substance Substances 0.000 claims description 3
- 230000002950 deficient Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000009730 filament winding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、繊維強化プラスチックス製円筒体の製造方
法、詳しくはベローズ付き円筒体、即ち周壁に凹凸を有
する円筒体を製造する方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a cylindrical body made of fiber-reinforced plastics, specifically a method for manufacturing a cylindrical body with bellows, that is, a cylindrical body having irregularities on the peripheral wall. It is.
従来、第１図に示すような周壁に凹凸を有する繊維強化
プラスチックス（以下ＦＲＰという）製の円筒体は、円
筒成形内型上に、フィラメントワインディング法によっ
て樹脂を含浸させた連続繊維を巻付けて巻付は繊維層を
形成した後、この巻付は繊維層上に外面成形用の外型を
被せて加圧し、その後全体を硬化成形する方法で製造さ
れている。Conventionally, a cylindrical body made of fiber reinforced plastics (hereinafter referred to as FRP) with an uneven peripheral wall as shown in Fig. 1 has been produced by winding continuous fibers impregnated with resin on the inner mold of a cylindrical mold using the filament winding method. Wrapping is performed by forming a fiber layer, placing an outer mold for molding the outer surface on the fiber layer, applying pressure, and then curing and molding the entire fiber layer.
ところで、従来、上記外型は、粘弾性体から成る円筒型
と、この円筒体の外側に空隙部をあけて設けられた外筒
とによって構成され、外型を巻付は繊維層に被せる際に
は、上記空隙部を減圧状態にして円筒型の径を広げ、巻
付は繊維層を加圧する際には、上記空隙部の減圧状態を
解除して円筒型を巻付は繊維層に密着させるようにして
いる。By the way, conventionally, the above-mentioned outer mold is composed of a cylindrical shape made of a viscoelastic material and an outer cylinder provided with a gap on the outside of the cylindrical body, and the outer mold is wound when the fiber layer is covered with the outer mold. To do this, the diameter of the cylindrical mold is expanded by reducing the pressure in the void, and when wrapping the fiber layer, the vacuum state in the void is released and the cylindrical shape is tightly wrapped around the fiber layer. I try to let them do it.
しかしながら、上記円筒型を巻付は繊維層に密着させる
際に、円筒型の内面と巻付は繊維層の外面との間にミク
ロボイド、即ち小気泡が浸入し、このミクロボイドのた
めに成形した円筒体の外観が不良となると共に、表面の
欠陥によって機械的強度が低下するという問題があった
。However, when the above-mentioned cylindrical mold is brought into close contact with the wrapped fiber layer, microvoids, that is, small air bubbles, infiltrate between the inner surface of the cylindrical mold and the outer surface of the wrapped fiber layer. There were problems in that the appearance of the body was poor and the mechanical strength was reduced due to surface defects.
そこで、この発明は、円筒体の表面にミクロボイドによ
る欠陥が生じないＦＲＰ製円筒体の製造方法を提供しよ
うとするものである。Therefore, the present invention aims to provide a method for manufacturing an FRP cylinder in which defects due to microvoids do not occur on the surface of the cylinder.
この発明は、上記の問題点を解決するために、上記のよ
うなＦＲＰ製円筒体の製造方法において、外型を構成す
る円筒型に細孔を設けたものである。In order to solve the above-mentioned problems, the present invention provides a method for manufacturing a cylindrical body made of FRP as described above, in which pores are provided in the cylindrical mold constituting the outer mold.
このように外型の円筒型に細孔が存在すると、円筒型を
巻付は繊維層に密着させる際に、円筒型と巻付は繊維層
間に混入するミクロボイドは円筒型の細孔から抜出すの
で、成形された巻付は繊維層の表面にミクロボイドによ
る欠陥が生じない。If there are pores in the cylindrical shape of the outer mold, when the cylindrical shape is brought into close contact with the fiber layer of the cylindrical shape and the wrapped fiber layer, the microvoids that are mixed between the cylindrical shape and the fiber layer are extracted through the pores of the cylindrical shape. Therefore, the formed winding does not have defects due to microvoids on the surface of the fiber layer.
以下、この発明の実施例を、第１図に示すような円筒部
２の途中にベローズ部３を有する円筒体１の製造を例に
とって説明する。Embodiments of the present invention will be described below, taking as an example the manufacture of a cylindrical body 1 having a bellows part 3 in the middle of the cylindrical part 2 as shown in FIG.
上記円筒体１の内面を成形する内型４は、第２図に示す
ように、円筒部２を成形する円筒型５とベローズ部３を
成形する凹凸型６とに分割されている。The inner mold 4 for molding the inner surface of the cylindrical body 1 is divided into a cylindrical mold 5 for molding the cylindrical portion 2 and an uneven mold 6 for molding the bellows portion 3, as shown in FIG.
上記円筒体１を製造する場合、まず、第３図に示すよう
に、上記内型４に、合成樹脂製のｍ１ｉ７を被せた後、
フィラメントワインディング法により、第４図に示すよ
うに、樹脂を含浸させた連続繊維を巻付けて巻付は繊維
層８を形成する。上記内型４上に、薄膜７を被せるのは
、内型４が分割型になっているため、金型の接合面間へ
樹脂が流れ込まないようにするためである。When manufacturing the cylindrical body 1, first, as shown in FIG. 3, after covering the inner mold 4 with m1i7 made of synthetic resin,
By the filament winding method, as shown in FIG. 4, continuous fibers impregnated with resin are wound to form a fiber layer 8. The reason for covering the inner mold 4 with the thin film 7 is to prevent the resin from flowing between the joint surfaces of the molds since the inner mold 4 is a split mold.
この後、巻付は繊維層８の外面に、円筒体１の外面成形
用の外型９を被せて、巻付は繊維層８を加圧成形する。Thereafter, the outer surface of the fibrous layer 8 is covered with an outer mold 9 for forming the outer surface of the cylindrical body 1, and the fibrous layer 8 is pressure-molded.
上記外型９は、ゴム等の粘弾性体からなる円筒型１０と
、この円筒型１０の外側に所定の空隙部１１をあけて設
けられる外筒１２とによって構成されている。上記円筒
型１０には、半径方向に円筒型１０を貫通する細孔１３
が形成されている。この細孔１３の大きさは、上記空隙
部１１を減圧状態にした際に、細孔１３からリ一りが生
じても、円筒型１０の内径が拡大する程度のものとする
。また、この細孔１３は、円筒型１０の全面に設けても
よいが、特に、円筒体１のベローズ部３の谷部を形成す
る部分に設けることが有効である。上記円筒型１０の両
端には、外向きのフランジ１４が突設され、このフラン
ジ１４を外筒１２の内面の両側に設けた環状リプ１６と
締付リング１６とによって挾み付けることにより、円筒
型１０と外筒１２とが組立てられる。上記外筒１２には
、加圧又は減圧用の穴１７が設けられている。The outer mold 9 includes a cylindrical mold 10 made of a viscoelastic material such as rubber, and an outer cylinder 12 provided outside the cylindrical mold 10 with a predetermined gap 11 therebetween. The cylindrical mold 10 has pores 13 that penetrate the cylindrical mold 10 in the radial direction.
is formed. The size of the pores 13 is such that the inner diameter of the cylindrical mold 10 is expanded even if the pores 13 are refilled when the void 11 is brought into a reduced pressure state. Although the pores 13 may be provided on the entire surface of the cylindrical mold 10, it is particularly effective to provide them in the portion forming the valley of the bellows portion 3 of the cylindrical body 1. At both ends of the cylindrical mold 10, outward flanges 14 are protruded, and by sandwiching the flanges 14 between an annular lip 16 and a tightening ring 16 provided on both sides of the inner surface of the outer cylinder 12, the cylindrical The mold 10 and the outer cylinder 12 are assembled. The outer cylinder 12 is provided with a hole 17 for pressurization or depressurization.
上記外筒１２の穴１７から空隙部１１の空気を吸い出し
て空隙部１１内を減圧状態にすると、粘弾性体から成る
円筒型１０が大気との圧力差で外方に向けて拡大する。When the air in the cavity 11 is sucked out through the hole 17 of the outer cylinder 12 to reduce the pressure inside the cavity 11, the cylindrical shape 10 made of a viscoelastic body expands outward due to the pressure difference with the atmosphere.
このようにして円筒型１０の内径を拡大させた状態で外
型９を巻付は繊維層８上に嵌め、次いで空隙部１１の減
圧状態を解いて、逆に加圧し、円筒型１０を巻付は繊維
層８に圧接させて全体を加熱成形する。この円筒型１０
を巻付は繊維Ｊ！８に圧接させた際に、円筒型１０と巻
付は繊維層８間に残る気泡は円筒型１０の細孔１３から
抜は出し、巻付は繊維層８の表面にミクロボイドが生じ
ない。With the inner diameter of the cylindrical mold 10 expanded in this way, the outer mold 9 is fitted onto the fiber layer 8, and then the reduced pressure in the cavity 11 is released and pressure is applied in reverse, and the cylindrical mold 10 is wound. The attachment is brought into pressure contact with the fiber layer 8 and the whole is heated and molded. This cylindrical type 10
Wrapping is fiber J! When the fibrous layer 8 is brought into pressure contact with the cylindrical mold 10, air bubbles remaining between the cylindrical mold 10 and the fiber layer 8 are extracted from the pores 13 of the cylindrical mold 10, and microvoids are not generated on the surface of the fibrous layer 8 when the fiber layer 8 is wound.
次いで、マトリックス樹脂が硬化した後に、空隙部１１
を再減圧して、内型５を抜き出して、内型６から成形さ
れた巻付は繊維層８を脱型する。Next, after the matrix resin is cured, the void portion 11 is
The pressure is reduced again, the inner mold 5 is taken out, and the wrapping formed from the inner mold 6 removes the fiber layer 8 from the mold.
この発明は、以上のとおりであるから、表面にミクロボ
イドによる欠陥のない外観が良好なベローズ付のＦＲＰ
製の円筒体を製造することができるという効果がある。As described above, the present invention provides an FRP with a bellows having a good appearance without defects caused by microvoids on the surface.
This has the effect that it is possible to manufacture a cylindrical body made of
【図面の簡単な説明】
第１図はこの発明の製造方法によって製造しようとする
繊維強化プラスチックス製の円筒体の一例を示す正面図
、第２図は内型の概略図、第３図は内型に薄膜を被せた
状態の概略図、第４図は第３図の薄膜上に繊維を巻付け
て巻付は繊維層を形成した状態を示す概略図、第５図は
第４図の巻付は繊維層の外面に外型を被せた状態を示す
概略図である。
１・・・・・・円筒体、４・・・・・・内型、８・・・
・・・巻付は繊維層、Ｓ・・・・・・外型、１０・・・
・・・円筒型、１１・・・・・・空隙部、１２・・・・
・・外筒、１３・・・・・・細孔。
特許出願人 住友電気工業株式会社
同 代理人 鎌 １） 文 二
Ｎ ′Ｓ[Brief Description of the Drawings] Fig. 1 is a front view showing an example of a cylindrical body made of fiber reinforced plastics to be manufactured by the manufacturing method of the present invention, Fig. 2 is a schematic diagram of the inner mold, and Fig. 3 is a Figure 4 is a schematic diagram showing a state in which a thin film is covered with the inner mold. Figure 4 is a schematic diagram showing a state in which fibers are wound around the thin film in Figure 3 to form a fiber layer. Wrapping is a schematic diagram showing a state in which the outer surface of the fiber layer is covered with an outer mold. 1... Cylindrical body, 4... Inner mold, 8...
... Wrapping is fiber layer, S ... Outer shape, 10 ...
...Cylindrical shape, 11...Void part, 12...
... Outer tube, 13... Pore. Patent applicant Sumitomo Electric Industries, Ltd. Agent Kama 1) Text 2N'S
Claims (1)
けて巻付け繊維層を形成した後、この巻付け繊維層上に
、細孔を有する粘弾性体から成る円筒型と、この円筒型
の外側に空隙部をあけて設けられた外筒とによって構成
された外型を、上記空隙部を減圧状態にして被せ、この
後上記空隙部の減圧状態を解除して上記円筒型を巻付け
繊維層に密着せしめ、この状態下で巻付け繊維層を硬化
成形することを特徴とする繊維強化プラスチックス製円
筒体の製造方法。After forming a wrapped fiber layer by winding continuous fibers impregnated with resin on the inner mold for cylindrical molding, a cylindrical mold made of a viscoelastic material having pores and this An outer mold formed by an outer cylinder provided with a cavity on the outside of the cylindrical mold is placed over the cylindrical mold with the cavity in a reduced pressure state, and then the reduced pressure in the void is released and the cylindrical mold is closed. A method for manufacturing a cylindrical body made of fiber-reinforced plastics, characterized by bringing the fiber into close contact with a wrapped fiber layer, and curing and molding the wrapped fiber layer under this condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61310026A JPS63159036A (en) | 1986-12-23 | 1986-12-23 | Manufacture of fiber reinforced plastic cylindrical body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61310026A JPS63159036A (en) | 1986-12-23 | 1986-12-23 | Manufacture of fiber reinforced plastic cylindrical body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63159036A true JPS63159036A (en) | 1988-07-01 |
Family
ID=18000263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61310026A Pending JPS63159036A (en) | 1986-12-23 | 1986-12-23 | Manufacture of fiber reinforced plastic cylindrical body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63159036A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007297917A (en) * | 2007-08-24 | 2007-11-15 | Toppan Printing Co Ltd | Decorative member |
-
1986
- 1986-12-23 JP JP61310026A patent/JPS63159036A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007297917A (en) * | 2007-08-24 | 2007-11-15 | Toppan Printing Co Ltd | Decorative member |
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