JPS63134219A - Manufacture and device for fiber-reinforced molded body - Google Patents
Manufacture and device for fiber-reinforced molded bodyInfo
- Publication number
- JPS63134219A JPS63134219A JP61281476A JP28147686A JPS63134219A JP S63134219 A JPS63134219 A JP S63134219A JP 61281476 A JP61281476 A JP 61281476A JP 28147686 A JP28147686 A JP 28147686A JP S63134219 A JPS63134219 A JP S63134219A
- Authority
- JP
- Japan
- Prior art keywords
- holes
- mold
- cross
- sectional area
- short fibers
- 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 description 6
- 239000000835 fiber Substances 0.000 claims abstract description 34
- 238000000465 moulding Methods 0.000 claims abstract description 14
- 239000012778 molding material Substances 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 12
- 238000010137 moulding (plastic) Methods 0.000 claims description 5
- 239000012779 reinforcing material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 230000003014 reinforcing effect Effects 0.000 abstract 3
- 239000000919 ceramic Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 229910010293 ceramic material Inorganic materials 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- -1 whiskers Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000011226 reinforced ceramic Substances 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、一方向に配向された短繊維等を含有する繊維
強化成形体の製法および該製法に使用する成形装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a fiber-reinforced molded article containing short fibers or the like oriented in one direction, and a molding apparatus used in the manufacturing method.
［従来の技術およびその問題点］
セラミック用の成形体の場合を従来例として記述すると
、セラミック用の粉体材料中に、短繊維やウィスカー（
以下、短繊維等と略称する）を分散して含有するセラミ
ック材料成形体を得る方法として、■あらかじめセラミ
ック粉体に短繊維等を分散させておき、冷間等圧圧縮成
形法（ＣＩＰ）等の従来の加圧成形法で成形体を得る方
法、■あらかじめセラミック粉体に短繊維等を分散させ
ておき、成形体を作らずにそのままホットプレス型に入
れて加圧焼成する方法、および■セラミック粉体と短繊
維等を溶媒中で混合ろ過して薄板状成形体を得る方法、
などが従来知られている。[Prior art and its problems] To describe the case of a molded body for ceramics as a conventional example, short fibers and whiskers (
As a method for obtaining a ceramic material molded body containing dispersed short fibers, etc. (hereinafter abbreviated as short fibers, etc.), A method of obtaining a molded body using the conventional pressure molding method, ■ A method of dispersing short fibers, etc. in ceramic powder in advance, and placing it in a hot press mold as it is without making a molded body and pressure-sintering it, and ■ A method of obtaining a thin plate-shaped compact by mixing and filtering ceramic powder and short fibers in a solvent,
etc. are conventionally known.
上記■の方法では短繊維等は３次元的に分散し、そして
■および■の方法では短繊維等は若干２次元的に配向す
るが、短繊維等を一方向に配向させることはできない。In method (1) above, short fibers, etc. are dispersed three-dimensionally, and in methods (2) and (2), short fibers, etc. are slightly oriented two-dimensionally, but short fibers, etc. cannot be oriented in one direction.
これらの短繊維強化セラミック材料成形体を焼成しても
、強度、靭性などの向上は不十分である。Even if these short fiber-reinforced ceramic material compacts are fired, improvements in strength, toughness, etc. are insufficient.
一方、押出成形に於いて、成形材料が押出方向にある程
度配向する現象が知られている。しかしながら、短繊維
を含むセラミック原料粉体を、第３図に示すような従来
の型３′を有する押出成形装置１′を用いて押出成形を
行うと、該粉体は成形体の表面よりも中心部で速く動き
、この速度勾配のために表面付近の短繊維等は押出し軸
にある程度平行に配向するが、中心部はランダムな配向
になる。短繊維の配向性を押出し方向に少しでも改善し
ようとすると、必然的に押出型が長大なものとなり、し
かも芯部分の配向はあまり改善されない。On the other hand, in extrusion molding, a phenomenon is known in which the molding material is oriented to some extent in the extrusion direction. However, when a ceramic raw material powder containing short fibers is extruded using an extrusion molding apparatus 1' having a conventional die 3' as shown in FIG. It moves quickly in the center, and due to this velocity gradient, the short fibers near the surface are oriented to some extent parallel to the extrusion axis, but the center is randomly oriented. If the orientation of short fibers is to be improved even slightly in the extrusion direction, the extrusion die will inevitably become long and long, and the orientation of the core portion will not be improved much.
上記の問題点は、セラミック原料以外の可塑性成形材料
２例えば繊維材料を分散混和して含有するセメント系湿
式混和物および熱可塑性樹脂熔融物等についても、まっ
たく同様である。The above-mentioned problems are exactly the same with plastic molding materials 2 other than ceramic raw materials, such as cement-based wet mixtures and thermoplastic resin melts containing dispersed fiber materials.
従って、本発明の目的は、短繊維等が一方向に配向され
た繊維強化成形体を得るための簡単かつ便利な成形方法
、およびそれに使用する装置を提供することにある。Therefore, an object of the present invention is to provide a simple and convenient molding method for obtaining a fiber-reinforced molded article in which short fibers and the like are oriented in one direction, and an apparatus used therein.
［問題点を解決するための手段］
本発明によって、繊維強化有効Ｍの短繊維等を分散混和
した可塑性成形材料１０を押出機２の型取付口２１から
、多数個の貫通穴３ａを有する第一の型３へ押出し、得
られた多数個の棒状押出成形体を、所望の成形体の断面
と実質的に同じ断面を有する、第二の型４の押出口４ａ
内に押出すことにより、該棒状押出成形体を束ね合わせ
て集合一体化しそして該成形体の形状に成形することか
ら本質的になり、好ましくは上記の型取付口２１の断面
積および貫通穴３＆の断面積および数は下記の式を満た
すことを特徴とする、繊維強化成形体の製造法が提供さ
れる：
貫通穴平均径（ｒ）／型取付口径（Ｄ）＝約ｏ、ｏｏｓ
〜約 ０．２ （１）貫通穴長（１）／貫通穴平均
径（ｒ）
＝約１〜約８０ （２）
貫通穴の数（ｎ）
＝｛成形体断面積／貫通穴平均 断面積（σ））Ｘ（約
０．５〜約３０） （３）。[Means for Solving the Problems] According to the present invention, the plastic molding material 10 in which fiber-reinforced effective M short fibers, etc. are dispersed and mixed is passed through the mold attachment port 21 of the extruder 2 into a mold having a large number of through holes 3a. A large number of rod-shaped extruded molded bodies obtained by extrusion into the first mold 3 are passed through the extrusion port 4a of the second mold 4, which has substantially the same cross section as the desired molded body.
By extruding the rod-shaped extrusion molded body into a bundle, the rod-shaped extrusion molded body is bundled together and formed into the shape of the molded body. Provided is a method for producing a fiber-reinforced molded body, characterized in that the cross-sectional area and number of the through-holes satisfy the following formula: average diameter of through holes (r)/mold attachment diameter (D) = approximately o, oos
~ Approximately 0.2 (1) Through hole length (1) / Average diameter of through holes (r) = Approximately 1 to approximately 80 (2) Number of through holes (n) = {Cross-sectional area of compact / Average cross-sectional area of through holes (σ))X (about 0.5 to about 30) (3).
上記の可塑性成形材料としては、代表的に、セラミック
用粉体原料の湿式混和物、セメント系材料の湿式混和物
、熱可塑性樹脂の加熱溶融物等の押出成形可能な材料が
例示される。The above-mentioned plastic molding materials are typically extrudable materials such as wet mixtures of powder raw materials for ceramics, wet mixtures of cementitious materials, and heated melts of thermoplastic resins.
上記の方法は、（イ）押出機２と、（ロ）一端を該押出
機の型取付口２１に取付けた多数個の貫通穴３ａを有す
る第一の型３と、（ハ）第一の型３の多数個の貫通穴３
ａに連結しそして押出方向に先細の絞り部４１と所望の
成形体断面と実質的に同じ断面を有する成形部４２とを
備えた押出口４ａを有する、第二の型４とから本質的に
成り、好ましくは上記の型取付口２１の断面積および貫
通穴３ａの断面積および数は上記の式（＋）〜（３）を
満たすことを特徴とする、成形装置を用いて実施し得る
。The above method includes (a) an extruder 2, (b) a first mold 3 having a plurality of through holes 3a whose one end is attached to the mold attachment port 21 of the extruder, and (c) a first mold. Multiple through holes 3 in mold 3
a and having an extrusion opening 4a with a constriction part 41 tapering in the extrusion direction and a forming part 42 having substantially the same cross-section as the desired compact cross-section. The molding can be carried out using a molding apparatus preferably characterized in that the cross-sectional area of the mold attachment port 21 and the cross-sectional area and number of the through holes 3a satisfy the above formulas (+) to (3).
なお、上記の第一の型３および第二の型４の形状をリン
グ状構造とすることによって、パイプ状等の中空成形体
も容易に成形できる。Note that by forming the first mold 3 and the second mold 4 into a ring-shaped structure, a hollow molded body such as a pipe shape can be easily molded.
上記の押出機は通常シリンダー状でありそして型取付口
は一般に円筒状であり、上記の型取付口径（Ｄ）は、型
取甘口面積を円面積として計算した値である。同様に上
記の貫通穴３ａは一般に円形の断面を有する管状形であ
り、貫通穴平均径（ｒ）は貫通穴断面積を円断面積とし
て計算した値である。従って、該型取付口および／また
は貫通穴の断面が円形状でない場合には、上記の径比（
ｒ）／（Ｄ）等の寸法は容易に換算可能である。The above-mentioned extruder is usually cylindrical, and the mold installation opening is generally cylindrical, and the above-mentioned mold installation opening diameter (D) is a value calculated by taking the sweet area of the mold as a circular area. Similarly, the above-mentioned through-hole 3a generally has a tubular shape with a circular cross section, and the average diameter (r) of the through-hole is a value calculated by assuming that the cross-sectional area of the through-hole is a circular cross-sectional area. Therefore, if the cross section of the mold attachment port and/or through hole is not circular, the above diameter ratio (
Dimensions such as r)/(D) can be easily converted.
一般的に、上記のセラミック系またはセメント系成形材
料には、あらかじめ該乾燥材料に、短繊維等を分散混合
しそして湿式混練したものを使用する。樹脂系材料の場
合には、溶融樹脂と混和した短繊維等からなる材料が使
用できる。ここで短繊維等とは繊維、ウィスカーおよび
これらの混合物を意味し、押出成形可能な長さの繊維等
（通常は長さ約５センチメートル以下、代表的には約３
センヂメートル以下）である。セラミック材料成形体等
の焼成すべき成形体用の繊維としては、該セラミック材
料等の焼結または焼成温度にて耐熱性である無機質材料
または金属材料の短繊維および／またはウィスカーが使
用される。例えば、この分散混合物に水またはエタノー
ルなどの溶剤を加え、必要に応じて粘剤あるいは可塑剤
、潤滑剤などの添加剤を加えて成形用の材料を調製する
。Generally, the above-mentioned ceramic or cement-based molding material is prepared by dispersing and mixing short fibers in the dry material and then wet-kneading the mixture. In the case of a resin-based material, a material made of short fibers mixed with a molten resin can be used. Here, short fibers, etc. mean fibers, whiskers, and mixtures thereof, and include fibers, etc. of a length that can be extruded (usually about 5 cm or less in length, typically about 3 cm in length).
centimeter or less). As fibers for a molded body to be fired, such as a ceramic material molded body, short fibers and/or whiskers of an inorganic material or a metal material that are heat resistant at the sintering or firing temperature of the ceramic material etc. are used. For example, a solvent such as water or ethanol is added to this dispersion mixture, and if necessary, additives such as a viscosity agent, a plasticizer, and a lubricant are added to prepare a material for molding.
上記の第一の型３で、貫通大長（１）／貫通穴平均径（
ｒ）の比が大きいほど短繊維等の配向度は良くなるが、
加工上の制限があり、短繊維等の径およびアスペクト比
、ならびに型取付口径にも影響される。貫通穴の平均径
（ｒ）は通常的１〜５ ＩＮ、長さく１）は通常約１０
〜５０ススである。In the first type 3 above, large through length (1)/average through hole diameter (
The higher the ratio of r), the better the orientation of short fibers, etc.
There are processing limitations, and it is also affected by the diameter and aspect ratio of short fibers, etc., and the mold installation diameter. The average diameter (r) of the through hole is usually 1 to 5 IN, and the length 1) is usually about 10 IN.
~50 soot.
貫通穴の数（ｎ）は、成形体断面積（Ａ）／貫通穴断面
積面積（σ）の約１．２倍以上であるのが好ましい。な
お、上記の成形体断面積（Ａ）とは、第二の型４からの
押出時の成形体の断面積である。The number of through holes (n) is preferably about 1.2 times or more the cross-sectional area of the molded body (A)/the cross-sectional area of the through holes (σ). Note that the above-mentioned cross-sectional area of the molded body (A) is the cross-sectional area of the molded body when extruded from the second mold 4.
第二の型４において、押出口４の絞り部４１の入口は第
一の型３の多数個の貫通穴３ａの出口全体と接続する大
きさである。そして成形部４２は成形体の断面とほぼ同
じ断面を有し、長さは約１．５ｃｍ以上である。In the second die 4, the inlet of the constricted portion 41 of the extrusion port 4 is sized to connect with all the outlets of the multiple through holes 3a of the first die 3. The molded portion 42 has a cross section that is substantially the same as the cross section of the molded body, and has a length of about 1.5 cm or more.
なお、本発明において、押出機のシリンダー内にプラン
ジャー（ピストン）２３を有する成形機および射出成形
用金型を使用すれば、成形材料の移動方向に強化用繊維
が実質的に配向した射出成形物が得られる。In addition, in the present invention, if a molding machine and an injection molding mold having a plunger (piston) 23 in the cylinder of the extruder are used, injection molding in which reinforcing fibers are substantially oriented in the direction of movement of the molding material can be performed. You can get things.
［作用コ
押出機２から押出された成形材料１０は第一の型３の多
数個の貫通穴３ａに入り、ここでスパゲッテー状の棒状
成形体となる。この貫通穴で成形材料中の短ｔａ維等は
押出方向に配向される。次に該スパゲッテー状成形体は
第二の型４の絞り部４１および成形部４２で束ね合わさ
れ一体化しそして所望の成形体に成形される。[Operation] The molding material 10 extruded from the extruder 2 enters the multiple through holes 3a of the first mold 3, where it becomes a spaghetti-like rod-shaped molded product. In this through hole, short ta fibers in the molding material are oriented in the extrusion direction. Next, the spaghetti-like molded body is bundled and integrated by the constricting part 41 and the forming part 42 of the second mold 4, and then molded into a desired molded body.
［具体的態様］
本発明を、添付の図面を参照しながらセラミック用原料
を用いる態様について説明する。他の可塑性材料につい
ても、同様にして本発明が適用できる。[Specific Embodiments] The present invention will be described with reference to the accompanying drawings regarding embodiments in which ceramic raw materials are used. The present invention can be similarly applied to other plastic materials.
第１図は、本発明の方法に使用される押出成形装置ｌを
示す。押出機２はシリンダー２２とスクリュー（または
プランジャー）２３とから成り、該シリンダーの内径（
Ｄ）は６ｃｍである。該押出機に接続された第一の型３
は、穴径（ｒ）０．２ｃｍ、長さく１）４ｃｘの一定の
太さの管状の貫通穴３ａを７０個有する。該貫通穴３ａ
は等間隔で押出方向から見て円形状に配置されている。FIG. 1 shows an extrusion molding apparatus l used in the method of the invention. The extruder 2 consists of a cylinder 22 and a screw (or plunger) 23, and the inner diameter of the cylinder (
D) is 6 cm. A first mold 3 connected to the extruder
has 70 tubular through holes 3a with a constant diameter (r) of 0.2 cm and a length of 1) 4 cx. The through hole 3a
are arranged at equal intervals in a circular shape when viewed from the extrusion direction.
該第−の型３に接続された第二の型４は、円錐台形状の
絞り部４１と円筒状の成形部４２から成る押出口４ａを
有する。成形部４２の内径（Ｒ）は１．５Ｃ１１、長さ
くＬ）は３ｃｍである。上記の装置１を用いて、セラミ
ック用粉体と短繊維とを分散混合しそして湿式混練した
ものからなるはい土から、径１．５ｃｍの円柱状のセラ
ミック用成形体が得られる。 第２図は、押出成形装置
の別の態様を示すもので、第一の型から第二の型へのは
い土の流れを滑らかにするように改良された型３．４を
有する。型３の貫通穴３ａは出口に向かって若干細くな
った管状で、押出し軸方向に向いている。The second mold 4 connected to the second mold 3 has an extrusion port 4 a consisting of a truncated cone-shaped constricted portion 41 and a cylindrical molded portion 42 . The inner diameter (R) of the molded part 42 is 1.5C11, and the length L) is 3 cm. Using the above-mentioned apparatus 1, a cylindrical ceramic molded body with a diameter of 1.5 cm is obtained from potting soil made by dispersing and mixing ceramic powder and short fibers and wet-kneading them. FIG. 2 shows another embodiment of the extrusion apparatus, having a mold 3.4 modified to smooth the flow of the soil from the first mold to the second mold. The through hole 3a of the mold 3 has a tubular shape that becomes slightly narrower toward the exit, and is oriented in the direction of the extrusion axis.
［発明の効果］
本発明によると、■短繊維等が一方向に配向された繊維
強化成形体が容易に得られる、■押出型がコンパクトと
なる、■得られる繊維強化成形体中の短繊維等の配向性
が優れているため、強度および靭性に優れた製品が得ら
れる。[Effects of the Invention] According to the present invention, it is possible to easily obtain a fiber-reinforced molded product in which short fibers are oriented in one direction, ■ the extrusion mold becomes compact, and ■ the short fibers in the obtained fiber-reinforced molded product are Because of its excellent orientation, products with excellent strength and toughness can be obtained.
第１図は、本発明の押出成形装置の概略縦断面図であり
：第２図は、本発明の他の態様の押出成形装置の概略縦
断面図であり：そして第３図は、従来の押出成形装置の
概略縦断面図である。
１．１’・・・押出成形装置、 ２．２′・・・押出機
、３′・・・従来の型、 ２Ｉ・・・型取付
口、３・・・第一の型、 ３ａ・・・貫通穴
、４・・・第二の型、 ４ａ・・・押出口、
４１・・・絞り部、 ４２・・・成形部、
ＩＯ・・・可塑性成形材料。FIG. 1 is a schematic vertical cross-sectional view of an extrusion molding apparatus of the present invention; FIG. 2 is a schematic vertical cross-sectional view of an extrusion molding apparatus of another embodiment of the present invention; and FIG. FIG. 2 is a schematic vertical cross-sectional view of an extrusion molding device. 1.1'... Extrusion molding device, 2.2'... Extruder, 3'... Conventional mold, 2I... Mold attachment opening, 3... First mold, 3a...・Through hole, 4... second mold, 4a... extrusion port,
41... Squeezing part, 42... Molding part,
IO...Plastic molding material.
Claims (3)
化材料を分散混和した可塑性成形材料を押出機の型取付
口から、多数個の貫通穴を有する第一の型へ押出し、得
られた多数個の棒状押出成形体を、第一の型に連結され
た、所望の成形体の断面と実質的に同じ断面を有する第
二の型の押出口内に押出すことにより、該棒状押出成形
体を束ね合わせて集合一体化して成形することを特徴と
する、該短繊維および／またはウィスカーが実質的に一
方向に配向した繊維強化成形体の製造法。(1) A plastic molding material in which an effective amount of reinforcing material selected from short fibers and whiskers is dispersed and mixed is extruded from the mold attachment port of an extruder into a first mold having a large number of through holes. By extruding the rod-shaped extruded molded bodies into the extrusion opening of a second mold connected to the first mold and having a cross section substantially the same as that of the desired molded body, the rod-shaped extruded molded bodies are extruded. A method for producing a fiber-reinforced molded article in which the short fibers and/or whiskers are substantially oriented in one direction, the method comprising bundling and integrally molding the short fibers and/or whiskers.
穴の断面積および数の関係が下記の式（１）、（２）、
（３）によって定義される、特許請求の範囲第１項の成
形体の製造法： 貫通穴平均径（ｒ）／型取付口径（Ｄ） ＝０．００５〜０．２・・・（１） 貫通穴長（ｌ）／貫通穴平均径（ｒ） ＝１〜８０・・・（２） 貫通穴の数（ｎ） ＝｛成形体断面積／貫通穴平均断面積（σ）｝×（０．
５〜３０）・・・（３）。(2) The relationship between the cross-sectional area of the mold attachment port of the extruder and the cross-sectional area and number of through holes of the first mold is expressed by the following formulas (1) and (2).
(3) A method for producing a molded article according to claim 1: Average diameter of through holes (r)/mold attachment diameter (D) = 0.005 to 0.2...(1) Through hole length (l) / average diameter of through holes (r) = 1 to 80... (2) Number of through holes (n) = {cross-sectional area of compact / average cross-sectional area of through holes (σ)} x (0 ．．
5-30)...(3).
付けた多数個の貫通穴を有する第一の型と、（ハ）第一
の型の多数個の貫通穴に連結し、そして押出方向に先細
の絞り部と所望の成形体断面と実質的に同じ断面を有す
る成形部とを備えた押出口を有する第二の型とから本質
的に成り、上記の型取付口の断面積および貫通穴の断面
積および数は下記の式（１）、（２）、（３）を満たす
ことを特徴とする、繊維強化成形体製造用の成形装置：
貫通穴平均径（ｒ）／型取付口径（Ｄ） ＝０．００５〜０．２・・・（１） 貫通穴長（ｌ）／貫通穴平均径（ｒ） ＝１〜８０・・・（２） 貫通穴の数（ｎ） ＝｛成形体断面積／貫通穴平均断面積（σ）｝×（０．
５〜３０）・・・（３）。(3) (a) an extruder; (b) a first mold having a large number of through holes attached to the mold attachment port of the extruder; and (c) a large number of through holes in the first mold. a second die having an extrusion opening having a constriction section tapering in the extrusion direction and a forming section having substantially the same cross-section as the desired compact cross-section; A molding device for producing a fiber-reinforced molded body, characterized in that the cross-sectional area of the mouth and the cross-sectional area and number of through holes satisfy the following formulas (1), (2), and (3):
Through hole average diameter (r) / mold attachment diameter (D) = 0.005 to 0.2... (1) Through hole length (l) / through hole average diameter (r) = 1 to 80... ( 2) Number of through holes (n) = {cross-sectional area of molded body/average cross-sectional area of through holes (σ)}×(0.
5-30)...(3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61281476A JPS63134219A (en) | 1986-11-25 | 1986-11-25 | Manufacture and device for fiber-reinforced molded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61281476A JPS63134219A (en) | 1986-11-25 | 1986-11-25 | Manufacture and device for fiber-reinforced molded body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63134219A true JPS63134219A (en) | 1988-06-06 |
Family
ID=17639709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61281476A Pending JPS63134219A (en) | 1986-11-25 | 1986-11-25 | Manufacture and device for fiber-reinforced molded body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63134219A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010269590A (en) * | 2009-04-20 | 2010-12-02 | Sumitomo Chemical Co Ltd | Method of manufacturing extrusion molding, and extrusion molding device |
| JP2017206728A (en) * | 2016-05-17 | 2017-11-24 | 株式会社明菱 | Molding material, molding device and manufacturing method of molded body |
| JP6472590B1 (en) * | 2017-09-04 | 2019-02-20 | 大塚化学株式会社 | Model and manufacturing method thereof |
| WO2019044864A1 (en) * | 2017-09-04 | 2019-03-07 | 大塚化学株式会社 | Shaped article and method for producing same |
| JP2019199077A (en) * | 2018-05-17 | 2019-11-21 | ザ・ボーイング・カンパニーＴｈｅＢｏｅｉｎｇ Ｃｏｍｐａｎｙ | Method and apparatus for consolidating a bulk molding compound |
| JP7004880B1 (en) * | 2020-06-29 | 2022-01-21 | 大塚化学株式会社 | Modeled object and its manufacturing method |
| JP2022539921A (en) * | 2019-11-18 | 2022-09-14 | スージョウ カンロニクス エレクトロニック テクノロジー カンパニー リミテッド | Single-cavity multi-flow channel used in extrusion molding equipment for oriented array of graphene fibers |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4934570A (en) * | 1972-08-01 | 1974-03-30 |
-
1986
- 1986-11-25 JP JP61281476A patent/JPS63134219A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4934570A (en) * | 1972-08-01 | 1974-03-30 |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010269590A (en) * | 2009-04-20 | 2010-12-02 | Sumitomo Chemical Co Ltd | Method of manufacturing extrusion molding, and extrusion molding device |
| JP2017206728A (en) * | 2016-05-17 | 2017-11-24 | 株式会社明菱 | Molding material, molding device and manufacturing method of molded body |
| JP6472590B1 (en) * | 2017-09-04 | 2019-02-20 | 大塚化学株式会社 | Model and manufacturing method thereof |
| WO2019044864A1 (en) * | 2017-09-04 | 2019-03-07 | 大塚化学株式会社 | Shaped article and method for producing same |
| CN110997762A (en) * | 2017-09-04 | 2020-04-10 | 大塚化学株式会社 | Shaped object and method for producing same |
| KR20200049766A (en) * | 2017-09-04 | 2020-05-08 | 오츠카 가가쿠 가부시키가이샤 | Sculpture and its manufacturing method |
| CN110997762B (en) * | 2017-09-04 | 2022-11-29 | 大塚化学株式会社 | Shaped object and method for producing same |
| JP2019199077A (en) * | 2018-05-17 | 2019-11-21 | ザ・ボーイング・カンパニーＴｈｅＢｏｅｉｎｇ Ｃｏｍｐａｎｙ | Method and apparatus for consolidating a bulk molding compound |
| JP2022539921A (en) * | 2019-11-18 | 2022-09-14 | スージョウ カンロニクス エレクトロニック テクノロジー カンパニー リミテッド | Single-cavity multi-flow channel used in extrusion molding equipment for oriented array of graphene fibers |
| JP7004880B1 (en) * | 2020-06-29 | 2022-01-21 | 大塚化学株式会社 | Modeled object and its manufacturing method |
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