JPH0455088B2 - - Google Patents
Info
- Publication number
- JPH0455088B2 JPH0455088B2 JP59165235A JP16523584A JPH0455088B2 JP H0455088 B2 JPH0455088 B2 JP H0455088B2 JP 59165235 A JP59165235 A JP 59165235A JP 16523584 A JP16523584 A JP 16523584A JP H0455088 B2 JPH0455088 B2 JP H0455088B2
- Authority
- JP
- Japan
- Prior art keywords
- product
- mold
- sheet
- long
- sheets
- 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 - Lifetime
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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/302—Details of the edges of fibre composites, e.g. edge finishing or means to avoid delamination
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/304—In-plane lamination by juxtaposing or interleaving of plies, e.g. scarf joining
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、長繊維が配合されたプリプレグシー
トの積層材を使用して凹凸部を有するFRP部品
を製造する方法に関し、例えば自動車におけるエ
ンジンマウントメンバ等の製造に利用されるもの
である。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for manufacturing FRP parts having uneven parts using a laminated material of prepreg sheets containing long fibers, such as engine mounts in automobiles. It is used for manufacturing members, etc.
（従来技術）
近年の自動車においては、車体の軽量化、高強
度化が強く要請されており、そのため各種部品に
FRP（ガラス繊維強化プラスチツク）を使用する
ことが試みられている。ところで、このFRP部
品の製造には、例えば特公昭54−35232号公報に
開示されているように、予めガラス繊維等に熱硬
化性樹脂を含浸させてシート状に成形したプリプ
レグシートと称せられる成形素材を用い、これを
熱プレス成形する方法が一般に採用されている。
これは、先ず製品のボリユームに応じて予め適当
な大きさに切断したプリプレグシートの積層材を
下型上にセツトし、然る後、これを上型及び下型
によつて加熱しながらプレスすることにより該シ
ート中の樹脂分を軟化させ、これにより上記積層
材を一体化して所要形状の製品を得るものであ
る。(Prior art) In recent years, there has been a strong demand for lighter and stronger car bodies for automobiles.
Attempts have been made to use FRP (glass fiber reinforced plastic). By the way, in order to manufacture these FRP parts, as disclosed in Japanese Patent Publication No. 54-35232, a method called a prepreg sheet is used, which is made by impregnating glass fiber or the like with a thermosetting resin and forming it into a sheet shape. A commonly used method is to use a raw material and heat press mold it.
First, a laminate of prepreg sheets cut to an appropriate size according to the volume of the product is set on a lower mold, and then this is heated and pressed by an upper mold and a lower mold. By doing so, the resin content in the sheet is softened, thereby integrating the above-mentioned laminated materials to obtain a product having a desired shape.
一方、製品強度を向上させるため、プリプレグ
シートにはガラス長繊維（連続ガラス繊維）が配
合されることがあるが、この種のプリプレグシー
トを用いて例えばエンジンマウントメンバ等の凹
凸部を有するFRP部品を製造する場合、上記の
ような従来の方法によれば次のような問題が生じ
る。即ち、第７図に示すように、成形用に上型Ａ
及び下型Ｂには製品の凹凸部を成形するための凹
部A1，A2及び凸部B1，B2が形成されるが、該凸
部B1，B2の近傍では下型Ｂ上へのプリプレグシ
ートＣ……Ｃのセツト時に該シートＣ……Ｃが未
だ十分に軟化していないため下型Ｂに密接せず、
該シートＣ……Ｃと下型Ｂとの間に隙間a1，a2が
生じた状態となる。そのため、この状態で型合せ
した場合、上記プリプレグシートＣ……Ｃの両端
部が上型Ａ及び下型Ｂにおける上記凹凸部A1，
A2，B1，B2によつて拘束されると共に、上記隙
間a1，a2が削減するように下型Ｂに沿つて押し付
けられるため、該シートＣ……Ｃないし該シート
Ｃ……Ｃ中のガラス長繊維に製品長手方向（図面
上、左右方向）の張力が作用することになる。そ
して、このようにガラス長繊維が引張られた状態
で、上記両型Ａ，Ｂの加熱及び加圧によりプリプ
レグシートＣ……Ｃ中の樹脂が次第に軟化して流
動性を有するようになると、該樹脂のガラス長繊
維に対する拘束が解かれるため、該長繊維は自ら
の収縮力によつて製品長手方向に最短距離を通過
するように移動し、その結果、第８図に示すよう
に上記下型Ｂの凸部B1（B2）の頂部付近ではガラ
ス長繊維Ｄが下型Ｂ側に寄り集つた状態となり、
製品の厚さ方向上方部に長繊維Ｄが存在しない樹
脂リツチ部分E1が生じることになる。また、第
９図に示すように型内の端部においては上記ガラ
ス長繊維Ｄが型の凹凸に沿つて移動した分だけ該
長繊維の長さが足りなくなり、そのため、製品の
端部においてもその長手方向に該長繊維Ｄが存在
しない樹脂リツチ部分E2が生じる。そして、製
品にこのような樹脂リツチ部分E1，E2が存在す
ると、その部分の強度が弱くなつて部分的に割れ
が生じたり、最悪の場合は製品が破損したりする
ことになる。 On the other hand, in order to improve product strength, long glass fibers (continuous glass fibers) are sometimes blended into prepreg sheets, but this type of prepreg sheet can be used to produce FRP parts with uneven parts, such as engine mount members. When manufacturing, the following problems arise according to the conventional method as described above. That is, as shown in FIG.
Concave portions A 1 , A 2 and convex portions B 1 , B 2 are formed on the lower die B for molding the uneven portion of the product, but in the vicinity of the convex portions B 1 and B 2 , the upper die of the lower die B is formed. When setting the prepreg sheet C...C to the lower mold B, the sheet C...C does not come into close contact with the lower mold B because it has not yet been sufficiently softened.
Gaps a 1 and a 2 are created between the sheet C...C and the lower mold B. Therefore, when the molds are matched in this state, both ends of the prepreg sheet C...C are the uneven parts A 1 ,
Since it is restrained by A 2 , B 1 , and B 2 and is pressed along the lower die B so as to reduce the gaps a 1 and a 2 , the sheet C...C or the sheet C... Tension is applied to the long glass fibers in C in the longitudinal direction of the product (in the horizontal direction in the drawing). With the long glass fibers being stretched in this way, the resin in the prepreg sheet C...C gradually softens and becomes fluid due to the heating and pressurization of both molds A and B. Since the restraint of the resin on the long glass fibers is released, the long fibers move by their own contraction force to pass the shortest distance in the longitudinal direction of the product, and as a result, as shown in FIG. Near the top of the convex portion B 1 (B 2 ) of B, the long glass fibers D are gathered toward the lower mold B side,
A resin-rich portion E1 in which the long fibers D do not exist is formed in the upper part of the product in the thickness direction. Moreover, as shown in FIG. 9, at the end of the mold, the length of the long glass fiber D becomes insufficient as the long fiber D moves along the unevenness of the mold, so that the length of the long fiber D becomes insufficient at the end of the product. A resin-rich portion E2 in which the long fibers D do not exist is formed in the longitudinal direction. If such resin-rich parts E 1 and E 2 are present in the product, the strength of the parts will be weakened and cracks will occur locally, or in the worst case, the product will be damaged.
また、上記のようにしてガラス長繊維が引張ら
れた状態でプレス成形された場合、上記樹脂によ
る長繊維に対する拘束が解かれた後においても該
長繊維に作用する張力は完全には解消されず、つ
まり、該張力が完全に解消される以前に樹脂が硬
化し、そのため、この長繊維に作用する張力によ
つて製品に変形（反り）が生じることになる。 Furthermore, when the long glass fibers are press-molded under tension as described above, even after the restraint on the long fibers by the resin is released, the tension acting on the long fibers is not completely resolved. In other words, the resin hardens before the tension is completely resolved, and the tension acting on the long fibers causes deformation (warp) in the product.
（発明の目的）
本発明は、ガラス長繊維が配合されたプリプレ
グシートのプレス加工時における上記のような問
題に対処するもので、この種のプリプレグシート
を用いて凹凸部を有するFRP部品ないし製品を
成形する場合において、上記凹凸部に生じ易いガ
ラス長繊維の偏在化を防止すると共に、製品端部
にも該長繊維が存在するようにし、もつて製品強
度の向上を図ることを目的とする。また、これに
加えて本発明においては、ガラス長繊維に大きな
張力が作用しないようにすることにより、製品の
長さ方向の変形を防止する。(Objective of the Invention) The present invention addresses the above-mentioned problems during press processing of a prepreg sheet containing long glass fibers, and uses this type of prepreg sheet to produce FRP parts or products having uneven parts. When molding, the purpose is to prevent uneven distribution of long glass fibers that tend to occur in the uneven portions, and also to ensure that the long fibers are present at the edges of the product, thereby improving the strength of the product. . In addition, in the present invention, deformation in the length direction of the product is prevented by preventing large tension from acting on the long glass fibers.
（発明の構成）
上記目的達成のため、本発明に係るFRP部品
の製造方法は次のように構成したことを特徴とす
る。(Structure of the Invention) In order to achieve the above object, the method for manufacturing an FRP component according to the present invention is characterized by having the following structure.
即ち、長繊維を配合したプリプレグシートを用
いて凹凸部を有する部品を熱プレス成形する方法
において、成形金型における上記凹凸部に対応す
る凹凸部付近でオーバーラツプするように予め分
断しておいたシートをプレス成形後も該シート中
の長繊維が該凹凸部の頂部付近で重複するように
余分に重複させて積層し、然る後、その上から熱
プレス成形する。 That is, in a method of hot press molding a component having an uneven part using a prepreg sheet containing long fibers, the sheet is divided in advance so as to overlap near the uneven part corresponding to the above-mentioned uneven part in a molding die. After press-forming, the long fibers in the sheet are laminated with extra overlap so that they overlap near the tops of the uneven portions, and then hot-press molding is performed from above.
このような方法によれば、金型の凹凸部付近で
オーバーラツプされたプリプレグシートが、該金
型によるプレス時にオーバーラツプ部の寸法が小
さくなるように互いに反対方向にずれながら上記
凹凸部に沿うこととなるため、プリプレグシート
ないし該シート中の長繊維に作用する張力が上記
シートのずれによつて解消されると共に、該シー
トの端部が金型の端部から離れることもない。そ
のため、加熱成形後においても、製品端部にも長
繊維が存在するようになると共に、上記金型の凹
凸部の頂部付近で互いに逆方向に延びる長繊維が
重複して存在することとなる。これにより、製品
の凹凸部や端部における長繊維の不在ないし樹脂
リツチ部分の発生が防止されると共に、該長繊維
に張力が作用することによる製品の長さ方向の変
形が防止されることになる。 According to such a method, the prepreg sheets overlapped near the uneven portion of the mold are shifted in opposite directions along the uneven portion so that the dimensions of the overlapped portion become smaller when pressed by the mold. Therefore, the tension acting on the prepreg sheet or the long fibers in the sheet is eliminated by the sheet displacement, and the end of the sheet does not separate from the end of the mold. Therefore, even after thermoforming, long fibers are present at the ends of the product, and long fibers extending in opposite directions are present overlappingly near the top of the uneven portion of the mold. This prevents the absence of long fibers or the occurrence of resin-rich portions in uneven parts and edges of the product, and also prevents deformation in the length direction of the product due to tension acting on the long fibers. Become.
（実施例） 以下、本発明の実施例について説明する。(Example) Examples of the present invention will be described below.
この実施例は、第１図に示すような両端部X1，
X2の近傍に凸部X3，X4を有する製品（エンジン
マウントメンバ）Ｘを製作する場合に関するもの
であつて、そのプレス成形用の金型は、第２図に
示すように上型１及び下型２とで構成され、該上
型１及び下型２には上記凸部X3，X4を成形すべ
く凹部１ａ，１ｂ及び凸部２ａ，２ｂが夫々形成
されている。そして、この上型１及び下型２によ
つて上記製品Ｘをプレス成形するのであるが、そ
の場合、成形素材としては、長繊維を含むガラス
繊維に熱硬化性樹脂を含浸させてシート状に形成
したプリプレグシートを使用する。このプリプレ
グシートは、上記下型２における凸部２ａ，２ｂ
付近でオーバーラツプさせた状態で該型２内に収
まるように、予め上記製品Ｘないし下型２（又は
上型１）の形状に合せて適当な長さに分断してお
いたものであつて、この実施例においては、下型
２の両端部２ｃ，２ｄに夫々セツトされる短いシ
ート３，３，４，４と、中央部にセツトされる長
いシート５，５とに分断されている。 In this embodiment, both ends X 1 ,
This is related to the case of manufacturing a product (engine mount member) X having convex portions X 3 and and a lower mold 2, and the upper mold 1 and the lower mold 2 are formed with recesses 1a, 1b and projections 2a, 2b, respectively, for forming the projections X3 , X4 . Then, the product Use the formed prepreg sheet. This prepreg sheet has convex portions 2a and 2b in the lower mold 2.
It is cut into suitable lengths in advance according to the shape of the product In this embodiment, the lower mold 2 is divided into short sheets 3, 3, 4, 4, which are set at both ends 2c, 2d, respectively, and long sheets 5, 5, which are set in the center.
然して、下型２上に上記各シート３，３，４，
４，５，５を載置するのであるが、この時、左右
両端部の各シート３，３，４，４と中央のシート
５，５とが上記下型２における凸部２ａ，２ｂの
頂部付近で交互にオーバーラツプするようにセツ
トする。ここで、上記シート３，３，４，４，
５，５の各オーバーラツプ部Ｙ，Y′の寸法L0，
L0′は下型２の凸部２ａ，２ｂの形状や大きさに
応じて加減され、またシートの枚数も製品の厚み
等に応じて増減される。 Therefore, each of the above-mentioned sheets 3, 3, 4,
At this time, the sheets 3, 3, 4, 4 at both left and right ends and the central sheets 5, 5 are placed on the tops of the convex portions 2a, 2b of the lower mold 2. Set so that they overlap alternately in the vicinity. Here, the above sheets 3, 3, 4, 4,
Dimensions L 0 of each overlap part Y and Y' of 5 and 5,
L 0 ' is adjusted depending on the shape and size of the convex portions 2a, 2b of the lower mold 2, and the number of sheets is also increased or decreased depending on the thickness of the product.
上記のようにしてプリプレグシート３，３，
４，４，５，５を下型２上にセツトした後、上型
１を下方を移動させて、該上型１及び下型２によ
り加熱しながら上記各シート３，３，４，４，
５，５を熱プレスする。これにより、上記各シー
ト３，３，４，４，５，５を構成する合成樹脂は
プレスに伴う熱及び圧力によつて軟化して型内を
流動し、その結果、第３，４図に示すように、該
型内の空間が該樹脂６によつて充填されるのであ
る。 Prepreg sheets 3, 3,
After setting the sheets 3, 4, 5, and 5 on the lower mold 2, the upper mold 1 is moved downward, and the sheets 3, 3, 4, 4, and 4 are heated by the upper mold 1 and the lower mold 2, respectively.
5. Heat press 5. As a result, the synthetic resin constituting each of the sheets 3, 3, 4, 4, 5, and 5 is softened by the heat and pressure associated with the pressing and flows inside the mold, and as a result, as shown in Figures 3 and 4. As shown, the space within the mold is filled with the resin 6.
然して、この型合せ時における当初において
は、上記各シート３，３，４，４，５，５が型面
に沿うように上型１によつて下型２に押し付けら
れるため、該シートないしその中に含まれるガラ
ス長繊維に製品長手方向の張力が作用すると共
に、樹脂による拘束が解かれた時に該長繊維が上
記張力を解消させるように自ら収縮しようとす
る。そして、このようにガラス長繊維が収縮する
と、上記凸部２ａ，２ｂの頂部付近に該長繊維の
偏在化が生じたり、或いは型内の端部で該長繊維
が存在しなくなつたりする可能性が生じる。しか
し、各プリプレグシート３，３，４，４，５，５
は上記したように下型２の凸部２ａ，２ｂ付近で
予め分断された上で十分にオーバーラツプされて
おり、そのため型合せ時においては該シートのオ
ーバーラツプ部Ｙ，Y′の寸法L0，L0′が小さくな
るように互いに反対方向に、つまり上記張力を解
消させる方向にずれながら型面に沿うようにな
る。その結果、上記樹脂６の軟化後には、第３図
に示すように、各シート３，３（４，４）及び
５，５に含まれていたガラス長繊維７及び８が上
記下型２の凸部２ａ（２ｂ）の頂部付近において、
そのオーバーラツプ部Ｚの寸法L1が上記シート
のオーバーラツプ部Ｙ（Y′）の寸法L0（Lp′）より
も小さくなつた状態で、重複して存在することと
なる。これにより、製品Ｘの凸部X3，X4におけ
る樹脂リツチ部分の発生が防止され、該凸部X3，
X4の強度が向上することになる。 However, at the beginning of this mold matching, each sheet 3, 3, 4, 4, 5, 5 is pressed against the lower mold 2 by the upper mold 1 along the mold surface, so that the sheets or their Tension in the longitudinal direction of the product acts on the long glass fibers contained therein, and when the resin restraint is released, the long fibers tend to contract by themselves so as to eliminate the tension. When the long glass fibers shrink in this way, the long fibers may become unevenly distributed near the tops of the convex portions 2a and 2b, or the long fibers may no longer exist at the ends of the mold. Gender arises. However, each prepreg sheet 3, 3, 4, 4, 5, 5
As mentioned above, the sheets are divided in advance near the convex portions 2a and 2b of the lower die 2 and are sufficiently overlapped, so that the dimensions L 0 and L of the overlapped portions Y and Y' of the sheets are 0 ' becomes smaller, so that they are deviated along the mold surface in opposite directions, that is, in a direction that eliminates the above-mentioned tension. As a result, after the resin 6 is softened, the long glass fibers 7 and 8 contained in the sheets 3, 3 (4, 4) and 5, 5 are transferred to the lower mold 2, as shown in FIG. Near the top of the convex portion 2a (2b),
The overlapping portion Z has a dimension L 1 smaller than the dimension L 0 (L p ′) of the overlapping portion Y (Y′) of the sheet, so that they overlap. This prevents the occurrence of resin-rich portions in the convex portions X 3 and X 4 of the product X, and
The strength of X 4 will be improved.
また、上記したように型合せ時に下型２ａ，２
ｂ付近で生じる上記各プリプレグシート３，３，
４，４，５，５のずれによつて端部のシート３，
３，４，４が中央側に寄せられることがなくなる
と共に、これらのシート中のガラス長繊維７，８
に張力が作用しなくなり、そのため合成樹脂の拘
束が解かれた後においても該シート中のガラス長
繊維７，８が収縮しないようになる。これによ
り、成形後における製品の長手方向の変形が防止
されると共に、第４図に示すように、型内の端部
（製品Ｘの端部X1ないしX2となる部分）において
もガラス長繊維７（８）が存在するようになつて
上記凸部X3，X4と同様に強度が向上することに
なる。 In addition, as mentioned above, during mold matching, the lower molds 2a, 2
Each of the above prepreg sheets 3, 3, which occurs near b
Due to the misalignment of 4, 4, 5, 5, the end sheet 3,
3, 4, 4 are no longer gathered to the center side, and the long glass fibers 7, 8 in these sheets
As a result, the long glass fibers 7 and 8 in the sheet do not shrink even after the restraint of the synthetic resin is released. This prevents deformation of the product in the longitudinal direction after molding, and also reduces the glass length at the ends within the mold (the portions that become ends X 1 and X 2 of product X), as shown in Figure 4. Due to the presence of fibers 7 (8), the strength is improved in the same manner as in the above-mentioned convex portions X 3 and X 4 .
次に、本発明の効果を確認するために行つた実
験について簡単に説明する。 Next, an experiment conducted to confirm the effects of the present invention will be briefly described.
第５図に示すように、製品Ｘ（エンジンマウン
トメンバ）の両端を固定した状態で、該製品Ｘに
おける一方の凸部X3に上方から荷重Ｐを加え、
その荷重点における下方への変位量を測定した。
その結果、第６図のグラフに示すように、本発明
に係る製品Ｘは、従来方法による製品X′（凸部に
樹脂リツチ部分が存在する製品）に比較して、同
一荷重に対する変位量が小さく即ち剛性が大幅に
高くなつていると共に、印加し得る最大荷重も約
100Kg大きくなつており、このように強度が著し
く向上していることが確認された。尚、この実験
で使用した製品Ｘ，X′は、いずれもガラス長繊
維を50wt％、ガラス短繊維を10wt％夫々含むも
のである。 As shown in Fig. 5, with both ends of the product X (engine mount member) fixed, a load P is applied from above to one convex portion X3 of the product
The amount of downward displacement at the loading point was measured.
As a result, as shown in the graph of FIG. 6, the product X according to the present invention has a smaller amount of displacement under the same load than the product It is small, meaning its rigidity is significantly higher, and the maximum load that can be applied is approximately
It is 100Kg larger, and it was confirmed that the strength has improved significantly. The products X and X' used in this experiment both contained 50 wt% of long glass fibers and 10 wt% of short glass fibers.
（発明の効果）
以上のように本発明によれば、ガラス長繊維が
配合されたプリプレグシートを用いて凹凸部を有
する部品ないし製品を成形する場合において、該
凹凸部に生じ易いガラス長繊維の偏在化が防止さ
れると共に、製品端部にも該長繊維が存在するよ
うになり、その結果、製品の強度が向上し或いは
樹脂リツチ部における割れ等が防止されることに
なる。また、本発明によれば、成形後にガラス長
繊維に対して大きな張力が作用しなくなり、その
結果、製品完成後の変形（反り）が防止される。(Effects of the Invention) As described above, according to the present invention, when a prepreg sheet containing long glass fibers is used to mold a part or product having uneven portions, the long glass fibers that are likely to form in the uneven portions are Uneven distribution is prevented, and the long fibers are also present at the ends of the product, resulting in improved strength of the product and prevention of cracks in resin-rich areas. Further, according to the present invention, no large tension is applied to the long glass fibers after molding, and as a result, deformation (warpage) after the product is completed is prevented.
第１図は本発明方法の実施例によつて製作され
た製品の１例を示す斜視図、第２図は該実施例に
おいて下型上にプリプレグシートをセツトした状
態を示す概略断面図、第３，４図は熱プレス時に
おける下型の凸部周辺及び端部周辺を夫々示す拡
大断面図、第５図は製品強度を確認するために行
つた実験についての説明図、第６図は該実験によ
つて得られた製品強度の特性を従来例と比較して
示すグラフ、第７図は従来におけるFRP部品の
製造方法を説明するために用いた概略断面図、第
８，９図は同じくその問題点を説明するために用
いた要部拡大断面図である。
１，２……成形金型（上型、下型）、１ａ，１
ｂ，２ａ，２ｂ……凹凸部、３，４，５……プリ
プレグシート、７，８……長繊維、Ｘ……部品
（製品）、X3，X4……凹凸部（凸部）。
FIG. 1 is a perspective view showing an example of a product manufactured by an embodiment of the method of the present invention, FIG. Figures 3 and 4 are enlarged cross-sectional views showing the area around the protrusion and end of the lower die during hot pressing, Figure 5 is an explanatory diagram of an experiment conducted to confirm the strength of the product, and Figure 6 is the A graph showing the product strength characteristics obtained through experiments in comparison with conventional examples. Figure 7 is a schematic cross-sectional view used to explain the conventional manufacturing method of FRP parts. Figures 8 and 9 are the same. FIG. 2 is an enlarged sectional view of a main part used to explain the problem. 1, 2...Molding mold (upper mold, lower mold), 1a, 1
b, 2a, 2b... Uneven portion, 3, 4, 5... Prepreg sheet, 7, 8... Long fiber, X... Part (product), X 3 , X 4 ... Uneven portion (convex portion).
Claims (1)
凹凸部を有する部品を熱プレス成形する方法であ
つて、成形金型における上記凹凸部に対応する凹
凸部付近で上記シートを分断すると共に、プレス
成形後も該シート中の長繊維が該凹凸部の頂部付
近で重複するように予め余分に重複させて積層
し、然る後、その上から熱プレス成形するように
したことを特徴とするFRP部品の製造方法。1 A method of hot press molding parts having uneven parts using a prepreg sheet containing long fibers, in which the sheet is divided near the uneven parts corresponding to the uneven parts in the molding die, and after press forming. Also, an FRP part characterized in that the long fibers in the sheet are overlapped in advance so that they overlap near the tops of the uneven parts, and then hot press molded from above. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59165235A JPS6143540A (en) | 1984-08-06 | 1984-08-06 | Manufacture of frp parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59165235A JPS6143540A (en) | 1984-08-06 | 1984-08-06 | Manufacture of frp parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6143540A JPS6143540A (en) | 1986-03-03 |
| JPH0455088B2 true JPH0455088B2 (en) | 1992-09-02 |
Family
ID=15808423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59165235A Granted JPS6143540A (en) | 1984-08-06 | 1984-08-06 | Manufacture of frp parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6143540A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI488729B (en) * | 2011-11-17 | 2015-06-21 | Advanced Int Multitech Co Ltd | A hot press die for manufacturing a fiber reinforced housing with an angle of inclination and a method for manufacturing the same |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2156943A4 (en) * | 2007-04-30 | 2013-11-27 | Airbus Operations Sl | Complex geometries made from composite material and method for forming said geometries |
| ES2338084B1 (en) * | 2008-10-30 | 2011-03-14 | Airbus Operations, S.L. | MANUFACTURING METHOD OF A COMPLEX GEOMETRY PANEL IN PREIMPREGNATED COMPOSITE MATERIAL. |
| JP5713568B2 (en) * | 2010-02-10 | 2015-05-07 | 三菱航空機株式会社 | Manufacturing method of structural material, structural material |
| CN103101200B (en) * | 2011-11-11 | 2015-07-08 | 明安国际企业股份有限公司 | Method of manufacturing fiber reinforced product with positioning mechanism |
| CN103465436B (en) * | 2012-06-08 | 2015-11-04 | 明安国际企业股份有限公司 | Method for manufacturing fiber-reinforced product with bonding mechanism |
| AU2013204015B1 (en) * | 2013-04-11 | 2014-03-13 | Carbon Revolution Pty Ltd | Face to rim connection for a composite wheel |
| DE102013223835A1 (en) * | 2013-09-05 | 2015-03-05 | Johnson Controls Components Gmbh & Co. Kg | Composite component, in particular for a vehicle seat, and vehicle seat |
| US10639854B2 (en) | 2016-02-08 | 2020-05-05 | Bell Helicopter Textron Inc. | Composite wing structure and methods of manufacture |
| US10513324B2 (en) * | 2016-02-08 | 2019-12-24 | Bell Helicopter Textron Inc. | Composite rib assembly |
-
1984
- 1984-08-06 JP JP59165235A patent/JPS6143540A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI488729B (en) * | 2011-11-17 | 2015-06-21 | Advanced Int Multitech Co Ltd | A hot press die for manufacturing a fiber reinforced housing with an angle of inclination and a method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6143540A (en) | 1986-03-03 |
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