JPH0614989Y2 - Mold for sheet molding compound - Google Patents
Mold for sheet molding compoundInfo
- Publication number
- JPH0614989Y2 JPH0614989Y2 JP9372688U JP9372688U JPH0614989Y2 JP H0614989 Y2 JPH0614989 Y2 JP H0614989Y2 JP 9372688 U JP9372688 U JP 9372688U JP 9372688 U JP9372688 U JP 9372688U JP H0614989 Y2 JPH0614989 Y2 JP H0614989Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molding
- breathable
- sheet
- breathable 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 - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、シート状の複合成形材料であるシートモール
ディングコンパウンドの成形に使用する型に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a mold used for molding a sheet molding compound which is a sheet-shaped composite molding material.
近時、シート状の複合成形材料であるシートモールディ
ングコンパウンド（Sheet Molding Compound）と呼ばれ
る材料（以下ＳＭＣという）を用いて各種の成形品が製
作されるようになつた。Recently, various molded products have been manufactured using a material called sheet molding compound (hereinafter referred to as SMC) which is a sheet-shaped composite molding material.
この材料の基材は、一般に不飽和ポリエステルやエポキ
シ、ビニールエステル等の熱硬化性樹脂が多く用いら
れ、強化材としてガラス繊維が中心となつている。In general, a thermosetting resin such as unsaturated polyester, epoxy, or vinyl ester is often used as a base material of this material, and glass fiber is mainly used as a reinforcing material.
ＳＭＣは、プリプレグと称する、未硬化の生シートを、
予め１４０〜１５０℃に加熱した金型の上に置いて圧縮
成形する固有の成形法によるものであるため、製品に次
のような問題を内蔵している。SMC is an uncured green sheet called prepreg,
Since it is based on a unique molding method in which it is placed on a mold heated in advance to 140 to 150 ° C. and compression molded, the product has the following problems.
(1)プリプレグを金型上で積層して成形するため、未硬
化の樹脂が硬化する際に発生するスチレンガス、プリプ
レグ自身に含まれた空気及び積層時に巻き込まれた空気
等が、成形時に逃げ切れずに製品内に取り残される。こ
の残存ガスが成形品の表面近くに存在すると、塗装、焼
付時にピンホールや膨れが発生するおそれがある。(1) Since the prepreg is laminated and molded on the mold, styrene gas generated when the uncured resin is cured, air contained in the prepreg itself, air entrapped during lamination, etc. escapes during molding. Without being left in the product. If this residual gas exists near the surface of the molded product, pinholes and swelling may occur during coating and baking.
(2)残存ガスによるものとは別に、成形品の表面にはピ
ット、ポロシティと呼ばれる微細な穴が多く発生する。(2) Apart from the residual gas, many fine holes called pits and porosities are formed on the surface of the molded product.
上記の問題点を解決する手段として、特公表昭６０−５
０１１５３号公報には、成形型内を真空ポンプで低圧に
吸引することでスチレンガスや空気を除去する真空脱気
法が提案されている。As a means for solving the above problems, Japanese Patent Publication Sho-60-5
Japanese Patent No. 01153 proposes a vacuum degassing method in which styrene gas and air are removed by sucking the inside of a molding die at a low pressure with a vacuum pump.
しかし、この真空脱気法では、脱気の実行時間が金型キ
ャビティに隙間が有る間だけであり、成形金型が完全に
閉じた後は真空脱気が不可能となる。ＳＭＣ成形では、
成形金型が完全に閉じた後も、未硬化のＳＭＣからガス
が依然として発生している。また、シール構造が不可欠
であるため成形金型が大型化し、パッキンの耐久性も要
求される。However, in this vacuum degassing method, degassing is performed only when the mold cavity has a gap, and vacuum degassing is impossible after the molding die is completely closed. In SMC molding,
Even after the molding die is completely closed, gas is still generated from the uncured SMC. Further, since the sealing structure is indispensable, the molding die becomes large and the durability of the packing is required.
本考案は、前記の課題を解決し、成形開始から終了まで
連続して脱気が可能であり、また、成形型を簡易な構成
で効率良く脱気機能を確保することができるシートモー
ルディングコンパウンドの成形型を提供することを目的
とするものである。The present invention solves the above-mentioned problems, and is capable of continuously performing degassing from the start to the end of molding, and a sheet molding compound capable of efficiently securing the degassing function with a simple structure of the molding die. It is intended to provide a molding die.
本考案は、分割金型の一方の型の一部を多孔質材料を圧
縮成形した通気性材料とこの通気性材料を支持する通気
孔を有する台座で形成した通気性型とし、この通気性型
を切換弁を介して真空吸引装置と圧縮空気給送装置に接
続したシートモールディングコンパウンドの成形型であ
る。According to the present invention, a part of one of the split molds is made of a breathable material formed by compressing and molding a porous material and a pedestal having a vent hole for supporting the breathable material. Is a mold for a sheet molding compound in which a vacuum suction device and a compressed air feeding device are connected via a switching valve.
シートモールディングコンパウンドの生シート材料を金
型のキャビティ内に装填し、分割金型を完全に閉じ、成
形品が硬化するまで通気孔を有する台座で支持された通
気性材料を通して生シート材料から発生するガスや空気
を脱気し、生シート材料が硬化し成形された後分割金型
を開く際に、通気性材料を通してキャビティ内に圧縮空
気を送気することにより、成形品を離型する。The raw sheet material of the sheet molding compound is loaded into the cavity of the mold, the split mold is completely closed and generated from the raw sheet material through the breathable material supported by the pedestal with the vents until the molded part is cured When the split sheet mold is opened after the raw sheet material is hardened and molded by degassing gas and air, the molded product is released by sending compressed air into the cavity through the breathable material.
多孔質材料を圧縮成形した通気性材料を使用したので、
成形時に型の一部を形成する通気性型の通気性材料にヘ
タリが全く生じない。Since we used a breathable material that was compression molded porous material,
No settling occurs in the breathable material of the breathable mold which forms part of the mold during molding.
本考案の実施例を図面について説明する。 An embodiment of the present invention will be described with reference to the drawings.
第１図は一実施例の断面を示すもので金型が閉じた状態
を示している。FIG. 1 shows a cross section of one embodiment and shows a state in which the mold is closed.
この実施例は、リブのない平板の成形品を成形する場合
で、キャビ型１には、平板状のキャビティ１ａが形成さ
れる。コア型２には、ガイドピン５が固定され、キャビ
型１との間にスペーサーリング６を配設して、両型１，
２を閉じたときに、キャビティ１ａの厚さを所定の寸法
に保つようになつている。In this embodiment, a flat plate-shaped molded product having no ribs is formed, and a flat plate-shaped cavity 1a is formed in the cavity mold 1. A guide pin 5 is fixed to the core mold 2, and a spacer ring 6 is arranged between the core mold 2 and the mold 1, so that
When the 2 is closed, the thickness of the cavity 1a is kept at a predetermined dimension.
コア型２には、後に詳記する通気性多孔質材料とそれを
支持する台座で形成した複数の通気性材料型３をキャッ
プ４で位置決めして配置し、その表面にガラスマット９
を載せる。通気性材料型３の裏面のコア型２内には、縦
通気孔７と横通気孔８が設けてある。On the core mold 2, a plurality of breathable material molds 3 formed of a breathable porous material and a pedestal supporting the breathable porous material, which will be described in detail later, are positioned by a cap 4, and the glass mat 9 is placed on the surface thereof.
Put. A vertical ventilation hole 7 and a horizontal ventilation hole 8 are provided in the core mold 2 on the back surface of the breathable material mold 3.
第２図は成形装置の全体の斜視図で、横通気孔８は、接
続栓１１、切換弁１２を介して真空タンク１３及び圧縮
空気タンク１４に接続される。真空タンク１３及び圧縮
空気タンク１４は、それぞれ真空ポンプ１５及びコンプ
レッサー１６に接続されている。FIG. 2 is a perspective view of the entire molding apparatus. The lateral vent holes 8 are connected to the vacuum tank 13 and the compressed air tank 14 via the connection plug 11 and the switching valve 12. The vacuum tank 13 and the compressed air tank 14 are connected to a vacuum pump 15 and a compressor 16, respectively.
第３図に通気性型３の拡大図を示す。同図(A)は通気性
型３を含む断面を示し、同図(B)は台座の平面図であ
る。FIG. 3 shows an enlarged view of the breathable mold 3. The figure (A) shows the cross section including the breathable mold 3, and the figure (B) is a plan view of the pedestal.
台座３ｂはスチール製の截頭円錐形体に多数の通気孔３
ｃを設けたもので、コア型２上にキャップ４で位置決め
して配置され、その底面の通気孔３ｃは縦通気孔７に連
通する。The pedestal 3b has a frustoconical shape made of steel and a large number of ventilation holes 3
c is provided and positioned on the core mold 2 by the cap 4, and the ventilation hole 3c on the bottom surface thereof communicates with the vertical ventilation hole 7.
この台座３ｂに載せる通気性材料３ａは、次のようにし
て成形したものである。The breathable material 3a placed on the pedestal 3b is molded as follows.
市販のニッケル−クローム系の多孔質材料である商品名
「セルメット」（住友電気工業株式会社製、品番＃２、
セル数１１〜１７個／インチ）の厚さ１０mmのシートを
４〜５枚重ね、圧縮応力１０kg／cm2で９０％押しつぶ
し、４〜５mmの厚さに成形する。この「セルメット」を
押しつぶして成形した通気性材料３ａは、通常の多孔質
材料に比べて、耐ヘタリ性に優れたものとなる。Trade name "Celmet", which is a commercially available nickel-chrome porous material (manufactured by Sumitomo Electric Industries, Ltd., product number # 2,
4 to 5 sheets of 10 mm thick having 11 to 17 cells / inch are stacked and crushed by 90% with a compressive stress of 10 kg / cm 2 to form a thickness of 4 to 5 mm. The breathable material 3a obtained by crushing and molding the "Celmet" has excellent fatigue resistance as compared with the usual porous material.
次に、この成形型を用いたＳＭＣの成形に付いて説明す
る。Next, SMC molding using this molding die will be described.
プリプレグと称する未硬化の生シートを、予め１４０〜
１５０℃に加熱した金型のキャビティ１ａ内に入れ、切
換弁１２を真空タンク１３側に切り換え、キャビティ１
ａ内を脱気しながらキャビ型１とコア型２を圧縮する。An uncured green sheet called a prepreg is pre-filled with 140-
It is put in the cavity 1a of the mold heated to 150 ° C., the switching valve 12 is switched to the vacuum tank 13 side, and the cavity 1
While degassing the inside of a, the mold 1 and the core mold 2 are compressed.
生シートから発生しキャビティ１ａ内に溜ったガスや空
気は、ガラスマット９とコア型２の微細間隙を通り、通
気性材料３ａ、台座３ｂの通気孔３ｃ、縦通気孔７、横
通気孔８、接続栓１１、切換弁１２を介し、真空タンク
１３に吸引される。この場合に、第３図(A)の拡大断面
図に示すように、ガラスマット９が通気性材料３ａを覆
っているので、ＳＭＣが通気性材料３ａの多孔質材料内
に侵入することが防止できる。キャビ型１がスペーサー
６に当り、金型が完全に閉じ、ＳＭＣが硬化した後、型
開きを行う。この離型時には、切換弁１２を圧縮空気タ
ンク１４側に切り換え、予めコンプレツサー１６で圧縮
空気タンク１４に貯蔵した圧縮空気を横通気孔８、縦通
気孔７を介し、通気性材料型３から噴出させる。ガラス
マット９は圧縮空気により押され、成形品１０に付着し
たままコア型２から離れる。Gas and air generated from the green sheet and accumulated in the cavity 1a pass through the fine gap between the glass mat 9 and the core mold 2, and the breathable material 3a, the vent holes 3c of the pedestal 3b, the vertical vent holes 7, and the lateral vent holes 8 are formed. It is sucked into the vacuum tank 13 via the connection plug 11 and the switching valve 12. In this case, as shown in the enlarged cross-sectional view of FIG. 3 (A), since the glass mat 9 covers the breathable material 3a, SMC is prevented from entering the porous material of the breathable material 3a. it can. The mold 1 is brought into contact with the spacer 6, the mold is completely closed, the SMC is cured, and then the mold is opened. At the time of this mold release, the switching valve 12 is switched to the compressed air tank 14 side, and the compressed air previously stored in the compressed air tank 14 by the compressor 16 is ejected from the breathable material mold 3 through the horizontal ventilation holes 8 and the vertical ventilation holes 7. Let The glass mat 9 is pushed by the compressed air and leaves the core mold 2 while being attached to the molded product 10.
このガラスマット９は、成形時にＳＭＣ材料が通気性材
料型３の多孔質材料内に侵入することを防止するだけで
なく、離型後も成形品側に付着しているので、自動車用
外板等で断熱性が必要な成形品の場合には、断熱効果を
目的として意図的に必要箇所に貼着するようにすること
も可能である。This glass mat 9 not only prevents the SMC material from entering the porous material of the air-permeable material mold 3 during molding, but also adheres to the molded product side even after the mold release, so that the outer panel for automobiles In the case of a molded product requiring heat insulating properties, etc., it is possible to intentionally adhere the product to a necessary place for the purpose of heat insulating effect.
以上のとおり、通気性材料型３を市販の多孔質材料を圧
縮成形したシート３ａとこれを支持する通気孔を有する
台座３ｂとで形成したので、この型を用いた成形時に通
気性材料３ａにヘタリを生ずることなく、効率良く脱気
機能を確保することができる。As described above, the breathable material mold 3 is formed by the sheet 3a obtained by compression-molding a commercially available porous material and the pedestal 3b having the vent holes for supporting the same. Therefore, the breathable material 3a can be formed at the time of molding using this mold. The degassing function can be efficiently ensured without causing the settling.
なお、本実施例では、通気性材料型３をコア型２に設置
したものを示したが、キャビ型１に設けるようにするこ
ともできる。In this embodiment, the breathable material mold 3 is provided in the core mold 2, but it may be provided in the mold mold 1.
次に、この型を用いた成形品のピンホール及び表面の平
滑性の試験の結果を、第１表と第２表に示す。Next, Tables 1 and 2 show the results of the test of the smoothness of the pinhole and the surface of the molded product using this mold.
（試験の条件） 試験材料：旭ファイバーグラス株式会社製 ＳＭＣ Ｚ１４５０ Ｓ１ 金型温度：キャビ型 １５０℃ コア型 １４０〜１４５℃ 成形圧力：８０kg／cm2 チャージ率：４９％（１４cm×１４cm） （ピンホールの比較） 大ピンホールＰ１：直径０．５mm以上 小ピンホールＰ２：直径０．５mm未満とする。(Test conditions) Test material: Asahi Fiber Glass Co., Ltd. SMC Z1450 S1 Mold temperature: Cavity type 150 ° C Core type 140-145 ° C Molding pressure: 80 kg / cm 2 Charge rate: 49% (14 cm x 14 cm) (Pin) Comparison of holes) Large pinhole P 1 : diameter 0.5 mm or more small pinhole P 2 : diameter less than 0.5 mm.
（考案の効果） 本考案は、通気性材料型を多孔質材料を圧縮成形したシ
ートとこれを支持する通気孔を有する台座とで形成した
ので、この型を用いた成形時に通気性材料にヘタリを生
ずることなく、効率良く脱気機能を確保できると共に、
高価な多孔質材料の使用量を減少でき、経済性に優れた
型が得られる。 (Effects of the Invention) According to the present invention, the breathable material mold is formed by the sheet formed by compression-molding the porous material and the pedestal having the vent holes to support the sheet. It is possible to efficiently secure the degassing function without causing
The amount of expensive porous material used can be reduced, and a mold with excellent economic efficiency can be obtained.
第１図は本考案の一実施例を示す断面図、第２図は成形
装置全体を示す斜視図、第３図(A)は第１図の部分拡大
断面図、第３図(B)は通気性材料型の台座を示す平面図
である。 １：キャビ型、１ａ：キャビティ、２：コア型 ３：通気性材料型、３ａ：通気性材料 ３ｂ：台座、３ｃ：通気孔 ４：キャップ、５：ガイドピン ６：スペーサーリング、７：縦通気孔 ８：横通気孔、９：ガラスマット １０：成形品1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a perspective view showing the entire molding apparatus, FIG. 3 (A) is a partially enlarged sectional view of FIG. 1, and FIG. 3 (B) is It is a top view which shows the base of a breathable material type. 1: Cavity type, 1a: Cavity, 2: Core type 3: Breathable material type, 3a: Breathable material 3b: Pedestal, 3c: Vent hole 4: Cap, 5: Guide pin 6: Spacer ring, 7: Vertical passage Porosity 8: Lateral ventilation hole, 9: Glass matte 10: Molded product
Claims (1)
圧縮成形した通気性材料と該通気性材料を支持する通気
孔を有する台座で形成した通気性型とし、該通気性型を
切換弁を介して真空吸引装置と圧縮空気給送装置に接続
したことを特徴とするシートモールディングコンパウン
ドの成形型。1. A breathable mold comprising a part of one of the split molds made of a breathable material obtained by compression-molding a porous material and a pedestal having a vent hole for supporting the breathable material. A mold for a sheet molding compound, wherein the mold is connected to a vacuum suction device and a compressed air feeding device via a switching valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9372688U JPH0614989Y2 (en) | 1988-07-15 | 1988-07-15 | Mold for sheet molding compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9372688U JPH0614989Y2 (en) | 1988-07-15 | 1988-07-15 | Mold for sheet molding compound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0215316U JPH0215316U (en) | 1990-01-31 |
| JPH0614989Y2 true JPH0614989Y2 (en) | 1994-04-20 |
Family
ID=31318200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9372688U Expired - Lifetime JPH0614989Y2 (en) | 1988-07-15 | 1988-07-15 | Mold for sheet molding compound |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0614989Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010052271A (en) * | 2008-08-28 | 2010-03-11 | Mitsubishi Electric Corp | Apparatus and method for manufacturing fiber-reinforced resin molding |
| JP2012521912A (en) * | 2009-03-30 | 2012-09-20 | サン−ゴバン グラス フランス | Molding process, molding equipment and use of plastic parts where the insert is held in place by suction |
| JP2013032014A (en) * | 2012-10-01 | 2013-02-14 | Mitsubishi Electric Corp | Apparatus for manufacturing fiber-reinforced resin molding |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012166355A (en) * | 2011-02-10 | 2012-09-06 | Aica Kogyo Co Ltd | Composite plate, and manufacturing method thereof |
-
1988
- 1988-07-15 JP JP9372688U patent/JPH0614989Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010052271A (en) * | 2008-08-28 | 2010-03-11 | Mitsubishi Electric Corp | Apparatus and method for manufacturing fiber-reinforced resin molding |
| JP2012521912A (en) * | 2009-03-30 | 2012-09-20 | サン−ゴバン グラス フランス | Molding process, molding equipment and use of plastic parts where the insert is held in place by suction |
| JP2013032014A (en) * | 2012-10-01 | 2013-02-14 | Mitsubishi Electric Corp | Apparatus for manufacturing fiber-reinforced resin molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0215316U (en) | 1990-01-31 |
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