JPH0428769B2 - - Google Patents
Info
- Publication number
- JPH0428769B2 JPH0428769B2 JP18954087A JP18954087A JPH0428769B2 JP H0428769 B2 JPH0428769 B2 JP H0428769B2 JP 18954087 A JP18954087 A JP 18954087A JP 18954087 A JP18954087 A JP 18954087A JP H0428769 B2 JPH0428769 B2 JP H0428769B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molded body
- rubber cylinder
- fiber
- body material
- 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
Links
- 239000000835 fiber Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000012783 reinforcing fiber Substances 0.000 claims description 4
- 230000037303 wrinkles Effects 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
- B30B5/02—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of a flexible element, e.g. diaphragm, urged by fluid pressure
Description
【発明の詳細な説明】
Ａ 発明の目的
(1) 産業上の利用分野
本発明は金属製部材等を繊維強化する場合に用
いられる強化用筒状繊維成形体の成形方法、特
に、通気性筒状成形型の外周面に、強化用繊維お
よび無機バインダを付着させて成形体素材を得、
次いで前記成形体素材を前記成形型に押圧して繊
維体積率を決定する成形方法の改良に関する。Detailed Description of the Invention A. Purpose of the Invention (1) Industrial Field of Application The present invention relates to a method for forming a reinforcing cylindrical fiber molded body used for fiber-reinforcing metal members, etc. Reinforcing fibers and an inorganic binder are attached to the outer peripheral surface of a shaped mold to obtain a molded body material.
Next, the present invention relates to an improvement in a molding method in which the fiber volume fraction is determined by pressing the molded body material into the mold.
(2) 従来の技術
従来、前記繊維体積率の決定に当つては、自由
状態にて成形型よりも大径のラバー筒を用い、そ
のラバー筒の外周側に加圧気体を供給して成形体
素材をラバー筒を介して成形型に押圧するといつ
た手法が採用されている。(2) Conventional technology Conventionally, when determining the fiber volume fraction, a rubber tube with a diameter larger than that of the mold was used in a free state, and pressurized gas was supplied to the outer circumference of the rubber tube to form the mold. The method used is to press the body material into a mold through a rubber tube.
(3) 発明が解決しようとする問題点
しかしながら前記手法によると、ラバー筒に皺
を生じ易く、その皺が成形体素材の表面に転写さ
れて不良品を発生するという問題がある。(3) Problems to be Solved by the Invention However, according to the above-mentioned method, there is a problem that wrinkles are easily generated in the rubber cylinder, and the wrinkles are transferred to the surface of the molded body material, resulting in defective products.
本発明は前記問題を解決することのできる前記
成形方法を提供することを目的とする。 An object of the present invention is to provide the above-mentioned molding method that can solve the above-mentioned problems.
Ｂ 発明の構成
(1) 問題点を解決するための手段
本発明は、通気性筒状成形型の外周面に、強化
用繊維および無機バインダを付着させて成形体素
材を得、次いで前記成形体素材を前記成形型に押
圧して繊維体積率を決定する強化用筒状繊維成形
体の成形方法において、自由状態にて前記成形型
よりも小径のラバー筒を、半径方向外方に吸引し
て前記成形型よりも大径に拡張し、前記ラバー筒
内に前記成形体素材を持つ前記成形型を設置した
後、該ラバー筒を縮径させながら該ラバー筒に半
径方向内方への加圧力を付与して前記成形体素材
を前記成形型に押圧することを特徴とする。B. Structure of the Invention (1) Means for Solving Problems The present invention provides a molded body material by attaching reinforcing fibers and an inorganic binder to the outer peripheral surface of an air-permeable cylindrical mold, and then In a method for forming a reinforcing cylindrical fiber molded body in which the material is pressed against the mold to determine the fiber volume fraction, a rubber cylinder having a smaller diameter than the mold is sucked radially outward in a free state. After the mold is expanded to a larger diameter than the mold and has the molded body material inside the rubber cylinder, a radially inward pressing force is applied to the rubber cylinder while reducing the diameter of the rubber cylinder. is applied to press the molded body material against the mold.
(2) 作用
前記のように拡径状態のラバー筒を縮径しなが
ら、そのラバー筒を介し加圧力を付与して成形体
素材を成形型に押圧すると、ラバー筒に皺を発生
することがなく、したがつて皺のない健全な繊維
成形体を得ることができる。(2) Effect If the diameter of the expanded rubber cylinder is reduced as described above, and a pressurizing force is applied through the rubber cylinder to press the molded material into the mold, wrinkles may occur in the rubber cylinder. Therefore, a healthy fiber molded article without wrinkles can be obtained.
(3) 実施例
第１図は強化用筒状繊維成形体１を示し、その
繊維成形体１は、強化用繊維としての長さ25〜
1000μｍのセラミツク繊維、例えばアルミナ繊維
を、無機バインダとしての５％シリカゾルにより
部分的に結合したもので、マトリツクスが浸入し
得る無数の空〓を有する。(3) Example Figure 1 shows a reinforcing cylindrical fiber molded body 1, and the fiber molded body 1 has a length of 25 to 25 mm as reinforcing fibers.
It is made by partially bonding 1000 μm ceramic fibers, such as alumina fibers, with 5% silica sol as an inorganic binder, and has numerous voids into which the matrix can penetrate.
この繊維成形体１は、例えばアルミニウム合金
製シリンダブロツクの鋳造時においてアルミニウ
ム合金マトリツクスと複合して繊維強化複合シリ
ンダスリーブを得るために用いられる。 This fiber molded body 1 is used, for example, in order to obtain a fiber-reinforced composite cylinder sleeve by combining it with an aluminum alloy matrix when casting an aluminum alloy cylinder block.
次に第２図により前記繊維成形体１の製造方法
について説明する。 Next, a method for manufacturing the fiber molded body 1 will be explained with reference to FIG.
第２図ａに示すように、シエル砂（粒度
AFS35）を用いて通気性を有する筒状成形型２
を形成する。この成形型２はシエル砂より構成さ
れているので、350〜400℃に高温加熱されると崩
壊するという物性を有する。 As shown in Figure 2a, shell sand (grain size
Air permeable cylindrical mold 2 using AFS35)
form. Since the mold 2 is made of shell sand, it has the property of collapsing when heated to a high temperature of 350 to 400°C.
第２図ｂに示すように、成形型２の両端開口部
にそれぞれホルダ31，32を接着、ボルト締め等に
より取付けてそれら開口部を密封する。 As shown in FIG. 2b, holders 3 1 and 3 2 are attached to the openings at both ends of the mold 2 by gluing, bolting, etc., and the openings are sealed.
第２図ｃに示すように、アルミナ繊維およびシ
リカゾルを含む成形材料の水溶液４中に成形型２
を浸漬し、真空ポンプ５により成形型２内に20〜
60cmＨｇの吸引作用を施して成形材料を成形型２
外周面に所定の厚さに付着させ、成形体素材６を
得る。 As shown in FIG. 2c, a mold 2 is placed in an aqueous solution 4 of a molding material containing alumina fibers and silica sol.
immersed into the mold 2 using the vacuum pump 5.
Applying suction at 60cmHg, the molding material is transferred to mold 2.
The molded body material 6 is obtained by attaching it to the outer peripheral surface to a predetermined thickness.
第２図ｄに示すように、成形型２を、後述する
ラバープレス７に設置して、成形体素材６を成形
型２に押圧し、これにより繊維成形体１の成形を
終了すると共にその繊維体積率を決定する。 As shown in FIG. 2d, the mold 2 is installed in a rubber press 7, which will be described later, and the molded body material 6 is pressed against the mold 2, thereby completing the molding of the fiber molded body 1 and the fibers thereof. Determine the volume fraction.
第２図ｅに示すように、成形型２より両ホルダ
31，32を取外す。 As shown in Figure 2e, both holders are removed from the mold 2.
Remove 3 1 and 3 2 .
第２図ｆに示すように、成形型２を乾燥炉８内
に設置し、繊維成形体１に120℃にて１時間の乾
燥処理を施して水分を蒸発除去する。 As shown in FIG. 2f, the mold 2 is placed in a drying oven 8, and the fiber molded body 1 is subjected to a drying process at 120° C. for 1 hour to evaporate and remove moisture.
第２図ｇに示すように、成形型２を焼成炉９内
に設置し、成形型２に350〜400℃にて１時間の崩
壊処理を施す。この崩壊処理により成形型２は完
全に崩壊する。 As shown in FIG. 2g, the mold 2 is placed in a firing furnace 9, and the mold 2 is subjected to a disintegration treatment at 350 to 400° C. for 1 hour. This collapse process completely collapses the mold 2.
第２図ｈに示すように、今度は繊維成形体１の
みを焼成炉９内に設置し、繊維成形体１に800℃
にて１時間の焼成処理を施してアルミナ繊維相互
をシリカゾルにより部分的に結合する。 As shown in FIG.
A firing treatment was performed for 1 hour to partially bond the alumina fibers to each other with silica sol.
第３図はラバープレス７および繊維成形体１の
成形工程を示す。 FIG. 3 shows the rubber press 7 and the molding process of the fiber molded body 1.
ラバープレス７は、断面凹弧状をなす内周面を
持つ筒体１０と、その筒体１０の下部開口を閉鎖
すべく、筒体１０に取付けられた底板１１と、筒
体１０の上部開口に着脱自在な蓋板１２と、下端
ビード部１３ａを筒体１０および底板１１間に挟
着され、また上端ビード部１３ｂを筒体１０およ
び環状押え板１４間に挟着されたラバー筒１３と
を有し、筒体１０に形成された２個の連通孔１５
１，１５2は加圧ポンプ１６および真空ポンプ１７
にそれぞれ接続される。 The rubber press 7 includes a cylindrical body 10 having an inner peripheral surface having a concave arc shape in cross section, a bottom plate 11 attached to the cylindrical body 10 to close the bottom opening of the cylindrical body 10, and an upper opening of the cylindrical body 10. A removable lid plate 12, a rubber cylinder 13 having a lower end bead portion 13a sandwiched between the cylindrical body 10 and the bottom plate 11, and an upper end bead portion 13b sandwiched between the cylindrical body 10 and an annular retaining plate 14. and two communicating holes 15 formed in the cylindrical body 10.
1 , 15 2 is a pressure pump 16 and a vacuum pump 17
are connected to each.
前記ラバー筒１３は、自由状態にて前記成形型
２よりも小径に形成されており、したがつてラバ
ー筒１３の上、下端ビード部１３ｂ，１３ａは拡
径状態にて筒体１０に取付けられている。その結
果、ラバー筒１０内を蓋板１２の気孔１８を通じ
て大気に連通し、またラバー筒１３外周面と筒体
１０内周面との間の気圧室Ｃを大気に連通した状
態では、ラバー筒１３の中間部は第３図ａに示す
ようにくびれている。 The rubber cylinder 13 is formed to have a smaller diameter than the mold 2 in its free state, and therefore the upper and lower bead portions 13b and 13a of the rubber cylinder 13 are attached to the cylinder body 10 in an enlarged diameter state. ing. As a result, when the inside of the rubber cylinder 10 is communicated with the atmosphere through the pores 18 of the cover plate 12, and the pressure chamber C between the outer peripheral surface of the rubber cylinder 13 and the inner peripheral surface of the cylinder body 10 is communicated with the atmosphere, the rubber cylinder The middle part of 13 is constricted as shown in Figure 3a.
繊維成形体１の成形作業に当つては、第３図ｂ
に示すように真空ポンプ１７を作動して気圧室Ｃ
内を減圧し、これによりラバー筒１３を半径方向
外方に吸引して筒体１０内周面に付着させ成形型
２よりも大径に拡張する。そして蓋板１２を外
し、成形体素材６を持つ成形型２を底板１１上に
立ててラバー筒１３内に設置し、再び蓋板１２を
閉じてそれと底板１１間にホルダ３1，３2を介し
成形型２を挟着する。 For the molding work of the fiber molded body 1, see Fig. 3b.
As shown in the figure, operate the vacuum pump 17 to open the pressure chamber C.
The pressure inside is reduced, thereby sucking the rubber cylinder 13 outward in the radial direction, causing it to adhere to the inner peripheral surface of the cylinder body 10 and expanding to a diameter larger than that of the mold 2. Then, the lid plate 12 is removed, the mold 2 holding the molded body material 6 is placed on the bottom plate 11 and placed inside the rubber tube 13, the lid plate 12 is closed again, and the holders 3 1 and 3 2 are placed between it and the bottom plate 11. The intervening mold 2 is sandwiched.
第３図ｃに示すように、真空ポンプ１７を不作
動にした後気圧室Ｃを大気に開放し、次いで加圧
ポンプ１６を作動して気圧室Ｃに加圧気体を導入
する。 As shown in FIG. 3c, after the vacuum pump 17 is deactivated, the pressure chamber C is opened to the atmosphere, and then the pressure pump 16 is activated to introduce pressurized gas into the pressure chamber C.
これによりラバー筒１３を縮径させながら、そ
のラバー筒１３を介して半径方向内方への加圧力
が成形体素材６に作用するので、その成形体素材
６が成形型２に押圧されて繊維成形体１が得ら
れ、同時のその繊維体積率（Vf）が決定される。 As a result, while reducing the diameter of the rubber tube 13, a radially inward pressing force is applied to the molded body material 6 through the rubber tube 13, so that the molded body material 6 is pressed against the mold 2 and fibers are formed. A molded body 1 is obtained and its fiber volume fraction (Vf) is determined at the same time.
前記のように拡径状態のラバー筒１３を縮径さ
せながら、そのラバー筒１３を介して成形体素材
６を成形型２に押圧すると、ラバー筒１３に皺を
発生することがなく、したがつて皺のない健全な
繊維成形体１を得ることができる。 When the molded body material 6 is pressed against the mold 2 through the rubber tube 13 while reducing the diameter of the rubber tube 13 in the expanded diameter state as described above, the rubber tube 13 does not wrinkle. A healthy fiber molded article 1 without wrinkles can be obtained.
成形型２の取出し時には、第３図ｂに示すよう
にラバー筒１３を再び半径方向外方へ吸引する。 When the mold 2 is taken out, the rubber tube 13 is sucked radially outward again as shown in FIG. 3b.
第４図は加圧ポンプ１６による加圧力と繊維成
形体１の繊維体積率との関係を示す。例えば、第
２図ｃ工程で得られる成形体素材６の繊維体積率
は５〜10％であるが、この成形体素材６に第３図
の成形工程を施し、その際加圧ポンプ１６による
加圧力を18Kg／cm2に設定すると、繊維体積率25％
の繊維成形体１を得ることができる。 FIG. 4 shows the relationship between the pressure applied by the pressure pump 16 and the fiber volume fraction of the fiber molded body 1. For example, the fiber volume percentage of the molded body material 6 obtained in step c in FIG. When the pressure is set to 18Kg/ cm2 , the fiber volume percentage is 25%.
A fiber molded body 1 of 1 can be obtained.
Ｃ 発明の効果
本発明によれば、前記特定構成のラバー筒を用
いることによつて皺のない健全な繊維成形体を安
定して得ることができる。C. Effects of the Invention According to the present invention, by using the rubber cylinder having the specific configuration, a wrinkle-free and healthy fiber molded article can be stably obtained.
第１図は繊維成形体の斜視図、第２図は繊維成
形体の製造工程説明図、第３図は繊維成形体の成
形工程説明図、第４図は加圧力と繊維体積率との
関係を示すグラフである。
１……繊維成形体、２……成形型、６……成形
体素材、１３……ラバー筒、１６……加圧ポン
プ、１７……真空ポンプ。
Figure 1 is a perspective view of the fiber molded body, Figure 2 is an explanatory diagram of the manufacturing process of the fiber molded body, Figure 3 is an explanatory diagram of the molding process of the fiber molded body, and Figure 4 is the relationship between pressing force and fiber volume fraction. This is a graph showing. DESCRIPTION OF SYMBOLS 1... Fiber molded body, 2... Molding die, 6... Molded body material, 13... Rubber tube, 16... Pressure pump, 17... Vacuum pump.
Claims (1)
よび無機バインダを付着させて成形体素材を得、
次いで前記成形体素材を前記成形型に押圧して繊
維体積率を決定する強化用筒状繊維成形体の成形
方法において、自由状態にて前記成形型よりも小
径のラバー筒を、半径方向外方に吸引して前記成
形型よりも大径に拡張し、前記ラバー筒内に前記
成形体素材を持つ前記成形型を設置した後、該ラ
バー筒を縮径させながら該ラバー筒に半径方向内
方への加圧力を付与して前記成形体素材を前記成
形型に押圧することを特徴とする強化用筒状繊維
成形体の成形方法。1. Obtain a molded body material by attaching reinforcing fibers and an inorganic binder to the outer peripheral surface of a breathable cylindrical mold,
Next, in the method for forming a reinforcing cylindrical fiber molded body in which the fiber volume fraction is determined by pressing the molded body material into the mold, a rubber cylinder having a diameter smaller than that of the mold is pressed radially outward in a free state. After the rubber cylinder is expanded to a larger diameter than the mold, and the mold with the molded body material is installed in the rubber cylinder, the rubber cylinder is contracted in diameter and expanded inward in the radial direction. A method for molding a reinforcing cylindrical fiber molded body, comprising pressing the molded body material against the mold by applying pressure to the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18954087A JPS6431941A (en) | 1987-07-29 | 1987-07-29 | Molding method for cylindrical fibrous preformed body for reinforcing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18954087A JPS6431941A (en) | 1987-07-29 | 1987-07-29 | Molding method for cylindrical fibrous preformed body for reinforcing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6431941A JPS6431941A (en) | 1989-02-02 |
| JPH0428769B2 true JPH0428769B2 (en) | 1992-05-15 |
Family
ID=16243018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18954087A Granted JPS6431941A (en) | 1987-07-29 | 1987-07-29 | Molding method for cylindrical fibrous preformed body for reinforcing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6431941A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268849A (en) * | 2011-07-15 | 2011-12-07 | 佛山市绿源纤维模塑科技有限公司 | Device and method for producing pulp molding products of cylinders |
-
1987
- 1987-07-29 JP JP18954087A patent/JPS6431941A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6431941A (en) | 1989-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |