JP2018039218A - Method for producing reinforcing fiber base material - Google Patents
Method for producing reinforcing fiber base material Download PDFInfo
- Publication number
- JP2018039218A JP2018039218A JP2016176381A JP2016176381A JP2018039218A JP 2018039218 A JP2018039218 A JP 2018039218A JP 2016176381 A JP2016176381 A JP 2016176381A JP 2016176381 A JP2016176381 A JP 2016176381A JP 2018039218 A JP2018039218 A JP 2018039218A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing fiber
- jig
- fiber bundle
- bundle layer
- reinforcing
- 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
Abstract
Description
本発明は、強化繊維基材の製造方法に関する。 The present invention relates to a method for producing a reinforcing fiber substrate.
生産性に優れた繊維強化プラスチック（Ｆｉｂｅｒ Ｒｅｉｎｆｏｒｃｅｄ Ｐｌａｓｔｉｃｓ：ＦＲＰ）の成形方法として、ドライの強化繊維布帛からなる基材積層体を成形型内に配置し、マトリックス樹脂を型内に注入し強化繊維基材積層体内に含浸させ、樹脂を硬化させた後、成形品を脱型させる、いわゆるＲＴＭ成形方法が知られている。そして、比較的大型の成形品や肉厚の成形品を製造する場合には、効率のよい成形方法として、先に強化繊維基材積層体（例えば、複数枚の強化繊維基材）を所定形状に賦形して、ＦＲＰの成形前躯体である強化繊維基材積層体のプリフォームを作製し、そのプリフォームを成形型内に配置して、マトリックス樹脂を型内に注入し、基材に含浸した樹脂を硬化させる成形方法が採用されている。このようなＲＴＭ成形に用いられる強化繊維布帛として、主に織物基材やＮＣＦ（ノンクリンプファブリック）基材が用いられることが多い。これらの基材は織機もしくは経編機により、量産に適したロール形態で生産されており、前記のプリフォームを製造する場合には、前記強化繊維布帛をロールから必要量引き出し、所望の形状に裁断、積層するなどされる。 Productivity excellent fiber reinforced plastic: As molding method (F iber R einforced P lastics FRP ), substrate laminate of reinforcing fiber cloths dry place in a mold, injecting a matrix resin into the mold There is known a so-called RTM molding method in which a reinforcing fiber base laminate is impregnated and a resin is cured, and then a molded product is demolded. And when manufacturing a comparatively large molded product or a thick molded product, as an efficient molding method, a reinforcing fiber base laminate (for example, a plurality of reinforcing fiber bases) is first formed into a predetermined shape. To form a preform of a reinforcing fiber substrate laminate, which is a pre-molding body of FRP, place the preform in a mold, and inject the matrix resin into the mold, A molding method for curing the impregnated resin is employed. As the reinforcing fiber fabric used for such RTM molding, a woven fabric base or an NCF (non-crimp fabric) base is often used. These base materials are produced in a roll form suitable for mass production by a loom or a warp knitting machine. When the preform is produced, a necessary amount of the reinforcing fiber fabric is drawn from the roll to obtain a desired shape. Cutting, laminating, etc.
ところが、このようにロールから必要量の基材を引き出して製品に対応する形状に裁断する方法では、製品形状を切り出した後に余る強化繊維布帛の端材が多く、強化繊維の廃棄量が増加し、コスト上昇の一因になるという問題があった。 However, in the method of drawing a necessary amount of the substrate from the roll and cutting it into a shape corresponding to the product in this way, there are many end materials of the reinforcing fiber fabric remaining after the product shape is cut out, and the waste amount of the reinforcing fibers increases. There was a problem that it contributed to the cost increase.
そこで、ロールから裁断するのではなく、必要箇所に強化繊維束を順次配置していくことで廃棄量を大幅に低減させる、ファイバープレイスメント法が注目されている。 In view of this, a fiber placement method has been attracting attention in which the amount of waste is significantly reduced by sequentially arranging reinforcing fiber bundles at necessary locations instead of cutting from a roll.
例えば、特許文献１などでは、ロボットハンドに取り付けたヘッドがタック性を有する強化繊維束を３次元形状型に直接貼り付ける方法が開示されている。この方法においては、強化繊維束を所望の量だけ型に貼り付けることができるため、強化繊維の廃棄量を大幅に低減できるほか、直接３次元型に貼り付けるため、プリフォーム作製工程が不要になるという利点がある。しかし、型形状に沿わせて貼り付けるため、形状が複雑になるほど速度が遅くなり、複雑な形状を有しながらも高い生産性を求められる自動車部材等の生産には用いることが困難である。 For example, Patent Document 1 discloses a method in which a reinforcing fiber bundle whose head attached to a robot hand has tackiness is directly attached to a three-dimensional shape mold. In this method, since a desired amount of reinforcing fiber bundles can be attached to the mold, the amount of reinforcing fibers discarded can be greatly reduced, and since the direct attachment to a three-dimensional mold does not require a preform manufacturing process. There is an advantage of becoming. However, since it sticks along the shape of the mold, the speed becomes slower as the shape becomes more complicated, and it is difficult to use it for the production of automobile members and the like that require high productivity while having a complicated shape.
また、特許文献２などでは、ヘッドが基布の上に強化繊維束を配置すると同時に縫い付けることで２次元の製品形状シートを作製する、いわゆるＴＦＰ（テイラードファイバープレイスメント）法が開示されている。この方法においては、一般的に強化繊維を平面上に配置していく手法であるため、前述の３次元型に直接配置するような方法に比べて配置速度が速い点が利点である。しかしながら、原理的に強化繊維束をステッチ糸で縫い付けるために基布が必要となり、後工程まで基布が混入してしまう制約がある。また、強化繊維束の配置とステッチ糸による基布への縫い付けを同時に行うため、縫い付け速度が律速になる可能性も考えられる。 Patent Document 2 discloses a so-called TFP (tailored fiber placement) method in which a head arranges a reinforcing fiber bundle on a base fabric and sews at the same time to produce a two-dimensional product shape sheet. . Since this method is generally a method of arranging reinforcing fibers on a plane, it is advantageous in that the arrangement speed is faster than the method of arranging the reinforcing fibers directly in the above-described three-dimensional type. However, in principle, a base fabric is required to sew the reinforcing fiber bundle with the stitch thread, and there is a restriction that the base fabric is mixed until a subsequent process. Moreover, since the arrangement of the reinforcing fiber bundle and the sewing to the base fabric with the stitch yarn are performed at the same time, there is a possibility that the sewing speed becomes rate-limiting.
さらに、特許文献３では、ファイバープレイスメントヘッドにより強化繊維束を平面状に配置した後、熱可塑性樹脂繊維をバインダとして接着し、前記強化繊維束を一体化し強化繊維布帛を作製する方法が開示されている。上記方法は、強化繊維を平面上に配置していくものであるため、前述の３次元型に直接配置するような方法に比べて強化繊維の配置速度が速く、さらにＴＦＰ法のように基布を製品内に残さない利点がある。しかし、上記手法では熱可塑性樹脂繊維をバインダとして一体化しているため、隣り合う強化繊維束同士は両者にまたがり存在するバインダの接着力のみに依存することから、強化繊維布帛の形態が不安定になり、賦形の際に強化繊維布帛を構成する強化繊維束の間に亀裂が生じやすく、局所的に強化繊維の密度が著しく低下する部分が発生して、力学物性が低下するという課題を有する。 Further, Patent Document 3 discloses a method of arranging a reinforcing fiber bundle in a planar shape by a fiber placement head, and then bonding a thermoplastic resin fiber as a binder and integrating the reinforcing fiber bundle to produce a reinforcing fiber fabric. ing. In the above method, the reinforcing fibers are arranged on a flat surface. Therefore, the arrangement speed of the reinforcing fibers is faster than the method of arranging the reinforcing fibers directly on the three-dimensional mold described above, and the base fabric as in the TFP method. There is an advantage not to leave in the product. However, in the above method, since the thermoplastic resin fibers are integrated as a binder, the adjacent reinforcing fiber bundles depend only on the adhesive force of the binder existing across both, so the form of the reinforcing fiber fabric is unstable. Thus, there is a problem that cracks are likely to occur between the reinforcing fiber bundles constituting the reinforcing fiber fabric at the time of shaping, and a portion in which the density of the reinforcing fibers is remarkably reduced occurs, resulting in a decrease in mechanical properties.
上記のように、いわゆるファイバープレイスメント法は、所望の箇所に強化繊維束を順次配置していくため、強化繊維の廃棄量を大幅に低減させることが可能である。特に、平面形状に配置する場合には、強化繊維の配置速度を高くすることができるため、生産性にも優れている。しかし、平面上に強化繊維束を配置した後にバインダを用いて一体化した場合には、後工程の賦形時に、織物基材やＮＣＦ基材のように基材としての形態（特に、ＮＣＦ基材の場合においては繊維配向や繊維間隔等）を保ちつつ、型の形状に沿って変形することが困難であった。 As described above, since the so-called fiber placement method sequentially arranges the reinforcing fiber bundles at desired locations, it is possible to greatly reduce the discard amount of the reinforcing fibers. In particular, when arranged in a planar shape, the arrangement speed of the reinforcing fibers can be increased, so that the productivity is excellent. However, when the reinforcing fiber bundle is arranged on a flat surface and integrated using a binder, the shape as a base material (particularly the NCF group) is formed at the time of shaping in a post process, such as a textile base material or an NCF base material. In the case of materials, it was difficult to deform along the shape of the mold while maintaining fiber orientation, fiber spacing, and the like.
そこで本発明の課題は、上記のような従来技術の現状に鑑み、強化繊維の廃棄量を大幅に低減でき、なおかつ賦形時に基材としての形態を保ちつつ型の形状に沿って変形することが可能な、生産性に優れた強化繊維基材の製造方法を提供することにある。 Therefore, in view of the current state of the prior art as described above, the object of the present invention is to greatly reduce the discard amount of reinforcing fibers, and to deform along the shape of the mold while maintaining the form as a base material during shaping. An object of the present invention is to provide a method for producing a reinforced fiber base material that is capable of achieving high productivity.
本発明はかかる課題を解決するために以下の構成を採るものである。すなわち、
（１）強化繊維束を一方向に引き揃えた強化繊維束層を少なくとも１層有し、前記強化繊維束が補助糸により一体化された強化繊維基材の製造方法であって、ａ−１）またはａ−２）いずれかの工程を経た後、ｂ）〜ｅ）の工程を有する強化繊維基材の製造方法。
ａ−１）一方向に引き揃うように強化繊維束を所定位置に配置し、前記強化繊維束を保持させた少なくとも１層の強化繊維束層を、開口部を有する第１の治具の表面上に配置する繊維配置工程
ａ−２）開口部を有する第１の治具の所定位置に、一方向に引き揃うように強化繊維束を配置した強化繊維束層を少なくとも１層形成する繊維配置工程、
ｂ）前記強化繊維束層を挟み込むように、開口部を有する第２の治具を設置する設置工程
ｃ）前記第１の治具および前記第２の治具に挟み込み圧力もしくは張力を付与して前記強化繊維束層を把持する把持工程
ｄ）前記第１の治具および／または前記第２の治具の開口部から前記強化繊維束層を前記補助糸で一体化する一体化工程
ｅ）前記第１の治具および前記第２の治具を取り外す取り外し工程
（２）前記強化繊維束層が２層からなる、（１）に記載の強化繊維基材の製造方法。
（３）前記ａ−１）工程において、静電吸着可能な架台上に前記強化繊維束層を静電吸着させる、（１）または（２）に記載の強化繊維基材の製造方法。
（４）前記ａ−２）工程において、静電吸着可能な架台上に前記第１の治具を配置し、前記強化繊維束層を静電吸着させる、（１）または（２）に記載の強化繊維基材の製造方法。
（５）前記第１の治具および／または前記第２の治具に、複数の開口部を有する、（１）〜（４）のいずれかに記載の強化繊維基材の製造方法。
（６）前記開口部のうち、縫合エリアの幅が２．５ｍｍ以上３００ｍｍ以下である、（１）〜（５）のいずれかに記載の強化繊維基材の製造方法。
The present invention adopts the following configuration in order to solve such a problem. That is,
(1) A method for producing a reinforcing fiber base having at least one reinforcing fiber bundle layer in which reinforcing fiber bundles are aligned in one direction, wherein the reinforcing fiber bundle is integrated with an auxiliary yarn, comprising: a-1 ) Or a-2) A method for producing a reinforcing fiber substrate having steps b) to e) after passing through any step.
a-1) A surface of a first jig having an opening, at least one reinforcing fiber bundle layer in which reinforcing fiber bundles are arranged at predetermined positions so as to be aligned in one direction and the reinforcing fiber bundles are held. Fiber placement step a-2) to be placed on top Fiber placement for forming at least one reinforcing fiber bundle layer in which reinforcing fiber bundles are arranged so as to be aligned in one direction at a predetermined position of a first jig having an opening. Process,
b) Installation step of installing a second jig having an opening so as to sandwich the reinforcing fiber bundle layer c) Applying sandwiching pressure or tension to the first jig and the second jig A gripping step of gripping the reinforcing fiber bundle layer d) an integration step of integrating the reinforcing fiber bundle layer with the auxiliary thread from the opening of the first jig and / or the second jig e) Removal step of removing the first jig and the second jig (2) The method for producing a reinforcing fiber substrate according to (1), wherein the reinforcing fiber bundle layer is composed of two layers.
(3) The method for producing a reinforcing fiber base according to (1) or (2), wherein in the step a-1), the reinforcing fiber bundle layer is electrostatically adsorbed on a stand that can be electrostatically adsorbed.
(4) In the step a-2), the first jig is placed on a gantry that can be electrostatically attracted, and the reinforcing fiber bundle layer is electrostatically attracted. (1) or (2) A method for producing a reinforcing fiber substrate.
(5) The method for producing a reinforcing fiber base according to any one of (1) to (4), wherein the first jig and / or the second jig have a plurality of openings.
(6) The manufacturing method of the reinforced fiber base material in any one of (1)-(5) whose width | variety of a stitching | suture area is 2.5 mm or more and 300 mm or less among the said opening parts.
このように、本発明に係る強化繊維基材の製造方法によれば、強化繊維の廃棄量を大幅に低減でき、なおかつ賦形時に基材としての形態を保ちつつ型の形状に沿って変形することが可能な、生産性と賦形性に優れた強化繊維基材を製造することができる。 As described above, according to the method for producing a reinforcing fiber base material according to the present invention, the waste amount of the reinforcing fiber can be greatly reduced, and the shape as a base material is deformed while maintaining the form as the base material during shaping. It is possible to manufacture a reinforcing fiber base material that is excellent in productivity and shapeability.
本発明の強化繊維基材の製造方法は、強化繊維束を配置する繊維配置工程、配置した強化繊維束を第１の治具および第２の治具で挟まれた状態にする設置工程、第１の治具および第２の治具を固定する把持工程、補助糸で強化繊維束のみを一体化させる一体化工程、さらに、第１の治具および第２の治具を取り外す取り外し工程から構成される。以下に、本発明の望ましい実施の形態について、図面を参照しながら説明する。なお、本発明が図面に記載された発明に限定されるものではない。 The method for producing a reinforcing fiber base according to the present invention includes a fiber arranging step of arranging a reinforcing fiber bundle, an installation step of placing the arranged reinforcing fiber bundle between the first jig and the second jig, A gripping process for fixing the jig 1 and the second jig, an integration process for integrating only the reinforcing fiber bundle with the auxiliary thread, and a removal process for removing the first jig and the second jig. Is done. Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the invention described in the drawings.
＜繊維配置工程＞
図１は本発明に係る強化繊維基材の製造工程の１つである繊維配置工程の一実施態様を表す。クリール１１５から引き出された強化繊維束１１４は、ファイバープレイスメントヘッド１１３により、架台１１２の上に一方向に引き揃うように配置され、強化繊維束層１１６が少なくとも１層以上形成される。形成された強化繊維束層１１６は搬送装置１１７により第１の治具１１０上に配置される。
<Fiber placement process>
FIG. 1 shows an embodiment of a fiber placement process which is one of the manufacturing processes of a reinforcing fiber base according to the present invention. The reinforcing fiber bundles 114 drawn from the creels 115 are arranged by the fiber placement head 113 so as to be aligned in one direction on the gantry 112, and at least one reinforcing fiber bundle layer 116 is formed. The formed reinforcing fiber bundle layer 116 is placed on the first jig 110 by the transport device 117.
ここで、用いる強化繊維の種類は限定しないが、例えば炭素繊維、ガラス繊維、アラミド繊維、金属繊維などが挙げられ、特に軽量化の効果が高いことから炭素繊維が好ましい。また、強化繊維束として、複数種の強化繊維から構成される強化繊維束を用いることもできる。 Here, the type of reinforcing fiber to be used is not limited, but examples thereof include carbon fiber, glass fiber, aramid fiber, metal fiber, and the like, and carbon fiber is particularly preferable because of its high light weight effect. A reinforcing fiber bundle composed of a plurality of types of reinforcing fibers can also be used as the reinforcing fiber bundle.
強化繊維束１１４を構成する強化繊維の単糸数は特に限定しないが、強化繊維束を配置するのに特段の時間を要することがないため生産性を低下させることがなく、かつ、例えば曲線に沿って強化繊維束を配置する際に、曲線の端部から繊維がはみ出して余分に配置することがないことから、３０００本〜６００００本が好ましく、１００００本〜６００００本がより好ましい。 また、強化繊維束１１４は、例えば、事前にサイジング処理、開繊処理、バインダ付与等の前処理を施した強化繊維束を用いることもできる。例えば、強化繊維束の集束性を向上させ、毛羽の発生を抑制させるのに、サイジング処理を用いることができる。また、前記強化繊維束の厚みと幅の比（アスペクト比）を調整して、後工程のプリフォーム工程、ＲＴＭ成形工程の条件に適したアスペクト比に設定するには、開繊処理を用いることができる。さらに、強化繊維布帛の層間を予備付着しプリフォームを作製することを可能なものにするため、バインダ付与等の前処理を用いることができる。 The number of single yarns of the reinforcing fibers constituting the reinforcing fiber bundle 114 is not particularly limited, but it does not take a special time to arrange the reinforcing fiber bundle, so that the productivity is not lowered and, for example, along a curve When the reinforcing fiber bundle is arranged, the fibers do not protrude from the end of the curve and are not arranged excessively, preferably 3000 to 60000, more preferably 10,000 to 60000. Further, as the reinforcing fiber bundle 114, for example, a reinforcing fiber bundle that has been subjected to pretreatments such as sizing treatment, fiber opening treatment, and binder application in advance can also be used. For example, a sizing process can be used to improve the convergence of the reinforcing fiber bundle and suppress the generation of fluff. In addition, in order to adjust the ratio of the thickness and width (aspect ratio) of the reinforcing fiber bundle to set the aspect ratio suitable for the conditions of the subsequent preform process and the RTM molding process, use a fiber opening process. Can do. Furthermore, in order to make it possible to preliminarily adhere between the layers of the reinforcing fiber fabric to produce a preform, a pretreatment such as applying a binder can be used.
強化繊維束層は少なくとも１層以上形成されていればその積層数は特に限定はないが、強化繊維束層が２層であると、一体化して得られる強化繊維基材の強化繊維の拘束が強すぎないため、強化繊維がほどよく動くことから型追従性に優れ、かつ強化繊維の拘束が弱すぎないため、強化繊維が動きすぎることがなく所望の配向から大きくずれることもないため、特に好ましい。 The number of layers of the reinforcing fiber bundle layer is not particularly limited as long as at least one reinforcing fiber bundle layer is formed. However, when the reinforcing fiber bundle layer is two layers, the reinforcing fibers of the reinforcing fiber base obtained as a result of being constrained Since it is not too strong, the reinforcing fiber moves moderately, so it is excellent in mold followability, and the constraint of the reinforcing fiber is not too weak, so that the reinforcing fiber does not move too much and does not deviate greatly from the desired orientation. preferable.
ファイバープレイスメントヘッド１１３は、強化繊維束１１４を所定の長さにカットする機構と、所定の位置に配置する機構を有するものであって、この所定の位置に配置する機構として、所定の箇所に強化繊維束を押し付けるローラおよびその加圧機構を用いてもよい。さらに、強化繊維束１１４としてバインダ等が付着しているものを使用する場合には、これを軟化・溶融させる加熱機構を有していてもよい。 The fiber placement head 113 has a mechanism that cuts the reinforcing fiber bundle 114 into a predetermined length and a mechanism that arranges the reinforcing fiber bundle 114 at a predetermined position. You may use the roller which presses a reinforcement fiber bundle, and its pressurization mechanism. Furthermore, when using what the binder etc. have adhered as the reinforcing fiber bundle 114, you may have a heating mechanism which softens and melts this.
架台１１２は所定の箇所に配置された強化繊維束１１４を保持する機構を有することが好ましい。保持機構としては、配置時には保持機能の発動と解除が容易である機構が好ましく、例えば架台表面上に静電気力を発生させて強化繊維束を吸着させる静電吸着機構や、架台表面上に負圧を発生させて強化繊維を吸着させる真空吸引機構が挙げられるが、この限りではない。特に、架台表面全体に対して、均一に吸着効果を発生させることが容易である静電吸着機構は端部の繊維であっても安定して吸着できるため、より好ましい。 The gantry 112 preferably has a mechanism for holding the reinforcing fiber bundle 114 arranged at a predetermined location. As the holding mechanism, a mechanism that easily activates and releases the holding function at the time of arrangement is preferable. For example, an electrostatic adsorption mechanism that generates an electrostatic force on the surface of the gantry to attract the reinforcing fiber bundle, or a negative pressure on the surface of the gantry. However, the vacuum suction mechanism that adsorbs the reinforced fiber by generating the above is not limited thereto. In particular, an electrostatic adsorption mechanism that can easily generate an adsorption effect uniformly on the entire surface of the gantry is more preferable because even an end fiber can be stably adsorbed.
搬送装置１１７は、一方向に引き揃うように配置された強化繊維束層１１６の形態を保持したまま第１の治具１１０上に搬送できる機構を有していればよく、例えば前述した静電吸着機構を有するロボットハンドが挙げられるが、この限りではない。 The transport device 117 only needs to have a mechanism capable of transporting onto the first jig 110 while maintaining the form of the reinforcing fiber bundle layer 116 arranged so as to be aligned in one direction. A robot hand having a suction mechanism may be mentioned, but this is not restrictive.
図２は本発明に係る強化繊維布帛の製造工程の１つである繊維配置工程の別の実施態様を表す。クリール１２５より引き出された強化繊維束１２４は、ファイバープレイスメントヘッド１２３により、架台１２２に設置された第１の治具１２０の上に一方向に引き揃うように配置され、強化繊維束層１２６が少なくとも１層以上形成される。架台１２２上には、前述の実施態様と同様の強化繊維束１２４を保持する機構を有していてもよい。 FIG. 2 shows another embodiment of the fiber placement process which is one of the manufacturing processes of the reinforcing fiber fabric according to the present invention. The reinforcing fiber bundle 124 drawn out from the creel 125 is arranged so as to be aligned in one direction on the first jig 120 installed on the gantry 122 by the fiber placement head 123, and the reinforcing fiber bundle layer 126 is formed. At least one layer is formed. On the gantry 122, a mechanism for holding the reinforcing fiber bundle 124 similar to the above-described embodiment may be provided.
＜設置工程＞
図３は本発明に係る強化繊維布帛の製造工程の１つである設置工程の一実施態様を表す。第１の治具１３０の上に配置された強化繊維束層１３６を挟み込むように、第２の治具１３８を設置する。
<Installation process>
FIG. 3 shows one embodiment of an installation process which is one of the manufacturing processes of the reinforcing fiber fabric according to the present invention. The second jig 138 is installed so as to sandwich the reinforcing fiber bundle layer 136 disposed on the first jig 130.
ここで前記第１の治具１３０および前記第２の治具１３８はそれぞれ複数の開口部１３１を有しており、それぞれの開口部が前記強化繊維束層１３６を介してそれぞれの開口部が重なりあうように設置する。 Here, each of the first jig 130 and the second jig 138 has a plurality of openings 131, and the openings overlap each other via the reinforcing fiber bundle layer 136. Install to meet.
前記第１の治具１３０および前記第２の治具１３８は、後の把持工程時や運搬時に前記強化繊維束層１３６の強化繊維が乱れることなく挟み込めるだけの剛性があればその材質に限定はなく、例えば鉄やアルミニウムといった金属や、アクリルや塩化ビニルといった樹脂が挙げられるがこの限りではない。 The first jig 130 and the second jig 138 are limited to the materials as long as the first jig 130 and the second jig 138 have a rigidity sufficient to sandwich the reinforcing fibers of the reinforcing fiber bundle layer 136 without being disturbed during a subsequent gripping process or transportation. For example, metals such as iron and aluminum, and resins such as acrylic and vinyl chloride are not limited thereto.
前記開口部１３１の形状は特に限定はないが、後の一体化工程で強化繊維束層を効率よく縫合するには、開口部のうち、縫合エリアの幅は一定であることが望ましい。例えば縫合エリアの幅Ｗが一定であれば、開口部の形状は図７（ａ）のように矩形状であったり、端部が半円状であっても良いし、図７（ｂ）のように曲線状であってもよい。 The shape of the opening 131 is not particularly limited. However, in order to efficiently sew the reinforcing fiber bundle layer in the subsequent integration step, it is desirable that the width of the stitching area is constant in the opening. For example, if the width W of the stitching area is constant, the shape of the opening may be rectangular as shown in FIG. 7A, the end may be semicircular, or the shape shown in FIG. It may be curved.
また、前記開口部１３１の幅Ｗは２．５ｍｍ以上３００ｍｍ以下であることが好ましく、さらに、５ｍｍ以上１００ｍｍ以下がより好ましい。前記開口部１３１の幅Ｗが２．５ｍｍ未満である場合、一体化工程で補助糸縫合ヘッドの針が第１の治具１３０および／または第２の治具１３８と干渉するおそれがあるだけでなく、前記強化繊維束１３６を十分に縫合できない。また、前記開口部１３１の幅Ｗが３００ｍｍよりも大きい場合、開口部が大きすぎるために後の把持工程で強化繊維束層を十分に把持することができず、一体化工程で縫合時に強化繊維の乱れが生じやすくなる。それに対し、特に、５ｍｍ以上１００ｍｍ以下とすることで、前記の強化繊維束を十分に保持しつつ、さらに、一体化工程の際、補助糸縫合ヘッドの針の干渉や縫合不十分といった問題を発生させることがない。 The width W of the opening 131 is preferably 2.5 mm to 300 mm, and more preferably 5 mm to 100 mm. When the width W of the opening 131 is less than 2.5 mm, the needle of the auxiliary thread stitching head may interfere with the first jig 130 and / or the second jig 138 in the integration process. The reinforcing fiber bundle 136 cannot be sufficiently sewn. In addition, when the width W of the opening 131 is larger than 300 mm, the opening is too large, so that the reinforcing fiber bundle layer cannot be sufficiently gripped in the subsequent gripping process, and the reinforcing fiber is sewn during the integration process. Disturbance tends to occur. On the other hand, in particular, when the thickness is 5 mm or more and 100 mm or less, the above-mentioned reinforcing fiber bundle is sufficiently retained, and further, problems such as needle interference of the auxiliary thread stitching head and insufficient suturing occur during the integration process. I will not let you.
隣り合う前記開口部１３１同士の距離間Ｌは２．５ｍｍ以上５０ｍｍ以下であることが好ましく、さらに、２．５ｍｍ以上１０ｍｍ以下がより好ましい。隣り合う前記開口部１３１同士の距離間Ｌが２．５ｍｍ未満であると、作製した強化繊維布帛の縫合密度が高くなりすぎて、縫合糸が賦形時の強化繊維の変形を阻害するため、十分な賦形性が得られない。隣り合う前記開口部１３１同士の距離間Ｌが５０ｍｍよりも大きいと、作製した強化繊維布帛の縫合密度が小さくなりすぎて、強化繊維布帛としての形態保持性に劣る。それに対し、特に、２．５ｍｍ以上１０ｍｍ以下とすることで、縫合密度が最適となるように強化繊維束層を縫合することが可能となる。 The distance L between the adjacent openings 131 is preferably 2.5 mm or more and 50 mm or less, and more preferably 2.5 mm or more and 10 mm or less. When the distance L between the adjacent openings 131 is less than 2.5 mm, the suture density of the produced reinforcing fiber fabric is too high, and the suture impedes deformation of the reinforcing fibers during shaping. Sufficient formability cannot be obtained. When the distance L between the adjacent openings 131 is larger than 50 mm, the stitched density of the produced reinforcing fiber cloth becomes too small, and the form retaining property as the reinforcing fiber cloth is inferior. On the other hand, the reinforcing fiber bundle layer can be stitched so that the stitching density is optimal by setting the thickness to 2.5 mm or more and 10 mm or less.
＜把持工程＞
図４は本発明に係る強化繊維布帛の製造工程の１つである把持工程の一実施態様を表す。把持機構１４９を第１の治具１４０と第２の治具１４８に取り付けることにより、前記第１の治具１４０と前記第２の治具１４８とに挟み込み圧力もしくは張力を付与する。これにより、前記把持機構１４９により前記第１の治具１４０、前記第２の治具１４８および強化繊維束層１４６は一体として扱え、運搬することができる。
<Gripping process>
FIG. 4 shows an embodiment of a gripping process which is one of the manufacturing processes of the reinforcing fiber fabric according to the present invention. By attaching the gripping mechanism 149 to the first jig 140 and the second jig 148, the gripping mechanism 149 is sandwiched between the first jig 140 and the second jig 148 to apply pressure or tension. Accordingly, the first jig 140, the second jig 148, and the reinforcing fiber bundle layer 146 can be handled and transported together by the gripping mechanism 149.
前記把持機構１４９は、前記第１の治具１４０と前記第２の治具１４８とに挟まれた前記強化繊維束層１４６の強化繊維が乱れないように保持され、かつ開口部１４１が少なくとも一部重なる箇所に干渉しなければ、その把持機構は限定されず、例えばクランプや万力、ベルトローラーのように機械的な機構で挟み込んでもよいし、電磁気力を用いた機構で挟み込んでもよい。 The gripping mechanism 149 is held so that the reinforcing fibers of the reinforcing fiber bundle layer 146 sandwiched between the first jig 140 and the second jig 148 are not disturbed, and at least one opening 141 is provided. The gripping mechanism is not limited as long as the overlapping portions do not interfere with each other. For example, the gripping mechanism may be sandwiched by a mechanical mechanism such as a clamp, a vise, or a belt roller, or may be sandwiched by a mechanism using electromagnetic force.
＜一体化工程＞
図５は本発明に係る強化繊維布帛の製造工程の１つである一体化工程の一実施態様を表す。補助糸縫合ヘッド１５２により、第１の治具１５０、第２の治具１５８が有する開口部１５１に補助糸１５７を縫合することで強化繊維束層１５６を一体化する。
<Integration process>
FIG. 5 shows one embodiment of an integration process which is one of the manufacturing processes of the reinforcing fiber fabric according to the present invention. The reinforcing fiber bundle layer 156 is integrated by stitching the auxiliary thread 157 into the opening 151 of the first jig 150 and the second jig 158 by the auxiliary thread stitching head 152.
前記補助糸縫合ヘッド１５２は、前記開口部１５１を貫通することで強化繊維束層を縫合・一体化するため、貫通時に縫合針に強化繊維が引きずられて強化繊維乱れが生じやすいが、本発明では前記強化繊維束層１５６が前記第１の治具１５０と前記第２の治具１５８とに挟まれて挟み込み圧力もしくは張力を付与されているため、繊維乱れを生じることなく強化繊維束層を縫合・一体化することができる。 Since the auxiliary thread stitching head 152 sews and integrates the reinforcing fiber bundle layer by penetrating the opening 151, the reinforcing fibers are easily dragged to the suturing needle at the time of penetrating. Then, since the reinforcing fiber bundle layer 156 is sandwiched between the first jig 150 and the second jig 158 and applied with a sandwiching pressure or tension, the reinforcing fiber bundle layer is formed without causing fiber disturbance. Can be stitched and integrated.
補助糸１５７の材質は特に限定されず、例えば、ポリエチレン、ポリアミド、ポリプロピレン、ポリエステル、ポリフェニレンサルファイド、ポリエーテルサルホン、無機繊維（例えば炭素繊維、ガラス繊維、金属繊維）、あるいはこれらの混紡等が挙げられるが、この限りではない。 The material of the auxiliary yarn 157 is not particularly limited, and examples thereof include polyethylene, polyamide, polypropylene, polyester, polyphenylene sulfide, polyether sulfone, inorganic fibers (for example, carbon fiber, glass fiber, metal fiber), and blended fibers thereof. This is not the case.
補助糸１５７の縫合パターンは特に限定されず、例えば鎖編、１／１トリコット編、あるいは鎖編と１／１トリコット編を複合した変則１／１トリコット編等が挙げられるが、この限りではない。 The sewing pattern of the auxiliary yarn 157 is not particularly limited, and examples thereof include a chain knitting, a 1/1 tricot knitting, or an irregular 1/1 tricot knitting in which a chain knitting and a 1/1 tricot knitting are combined. .
補助糸１５７のピッチｐは、２．５ｍｍ以上１０ｍｍ以下が好ましい。前記ピッチｐが２．５ｍｍ未満の場合、作製した強化繊維布帛の縫合密度が高くなりすぎて、縫合糸が賦形時の強化繊維の変形を阻害するため、十分な賦形性が得られない。前記ピッチｐが１０ｍｍよりも大きい場合、作製した強化繊維布帛の縫合密度が小さくなりすぎて、強化繊維布帛としての形態保持性に劣る。 The pitch p of the auxiliary yarn 157 is preferably 2.5 mm or more and 10 mm or less. When the pitch p is less than 2.5 mm, the stitching density of the produced reinforcing fiber fabric is too high, and the suture thread inhibits deformation of the reinforcing fiber at the time of shaping, so that sufficient shaping property cannot be obtained. . When the pitch p is larger than 10 mm, the stitched density of the produced reinforcing fiber cloth becomes too small, and the form retaining property as the reinforcing fiber cloth is inferior.
補助糸１５７同士の間隔ｔは、５ｍｍ以上５０ｍｍ以下が好ましい。前記補助糸１５７同士の間隔ｗが２．５ｍｍ未満の場合、作製した強化繊維布帛の縫合密度が高くなりすぎて、縫合糸が賦形時の強化繊維の変形を阻害するため、十分な賦形性が得られない。前記補助糸１５７同士の間隔ｗが５０ｍｍよりも大きい場合、作製した強化繊維布帛の縫合密度が小さくなりすぎて、強化繊維布帛としての形態保持性に劣る。 The interval t between the auxiliary yarns 157 is preferably 5 mm or more and 50 mm or less. When the spacing w between the auxiliary yarns 157 is less than 2.5 mm, the stitching density of the produced reinforcing fiber fabric becomes too high, and the suturing yarn hinders deformation of the reinforcing fiber at the time of shaping. Sex cannot be obtained. When the interval w between the auxiliary yarns 157 is larger than 50 mm, the suture density of the produced reinforcing fiber cloth becomes too small, and the form retainability as the reinforcing fiber cloth is inferior.
縫合パターンの一例を図８に示す。図８（ａ）は縫合パターンが鎖編の場合の、図８（ｂ）は縫合パターンが１／１トリコット編の場合の補助糸１８７のピッチｐおよび補助糸１８７同士の間隔ｔを表している。このような縫合パターンを採用することにより、強化繊維束同士が相互に離散することなく、また縫合された後も十分な賦形性を有する強化繊維布帛とすることができる。 An example of the stitching pattern is shown in FIG. 8A shows the pitch p of the auxiliary yarn 187 and the interval t between the auxiliary yarns 187 when the sewing pattern is a chain knitting, and FIG. 8B shows the pitch p of the auxiliary yarn 187 when the sewing pattern is a 1/1 tricot knitting. . By adopting such a stitching pattern, the reinforcing fiber bundles can be made into a reinforcing fiber fabric having sufficient formability without being separated from each other and stitched.
＜取り外し工程＞
図６は本発明に係る強化繊維布帛の製造工程の１つである取り外し工程の一実施態様を表す。第１の治具１６０、第２の治具１６８、把持機構１６９を取り外すことにより、強化繊維束層１６６が補助糸により一体化された強化繊維布帛２００が得られる。
<Removal process>
FIG. 6 shows one embodiment of the removing step which is one of the manufacturing steps of the reinforcing fiber fabric according to the present invention. By removing the first jig 160, the second jig 168, and the gripping mechanism 169, the reinforcing fiber fabric 200 in which the reinforcing fiber bundle layer 166 is integrated with the auxiliary yarn is obtained.
以下に、本発明の実施例について説明する。 Examples of the present invention will be described below.
（実施例１）
＜強化繊維＞
強化繊維束として、東レ株式会社製炭素繊維“トレカ”（登録商標）Ｔ７００Ｓを使用した。本実施例においては、強化繊維束の幅が１０ｍｍ、強化繊維束の単糸数が１２０００本の強化繊維束を使用した。
Example 1
<Reinforcing fiber>
As the reinforcing fiber bundle, carbon fiber “Torayca” (registered trademark) T700S manufactured by Toray Industries, Inc. was used. In this example, a reinforcing fiber bundle having a reinforcing fiber bundle width of 10 mm and a reinforcing fiber bundle having 12,000 single yarns was used.
＜第１の治具および第２の治具＞
第１の治具および第２の治具は、矩形形状の開口部を２０か所有するアクリル板（サイズ：５００ｍｍ四方、厚み：１ｍｍ）を用いた。開口部は幅１０ｍｍ、長さ４００ｍｍ、隣り合う開口部同士の距離間は１０ｍｍとした。
<First jig and second jig>
As the first jig and the second jig, an acrylic plate (size: 500 mm square, thickness: 1 mm) having 20 rectangular openings was used. The openings were 10 mm wide, 400 mm long, and the distance between adjacent openings was 10 mm.
＜繊維配置工程＞
静電吸着機構を有する架台を準備し、ファイバープレイスメントヘッドを用いて架台上に強化繊維束を一方向に隙間なく引き揃え、４００ｍｍ四方の強化繊維束層を２層作製した。
<Fiber placement process>
A gantry having an electrostatic adsorption mechanism was prepared, and the reinforcing fiber bundles were aligned on the gantry without gaps on the gantry using a fiber placement head to produce two 400 mm square reinforcing fiber bundle layers.
次に、静電吸着機構を有したロボットハンドを用いて強化繊維束層をそれぞれ吸着・運搬し、それぞれの強化繊維束層の配向角度差が９０°となるように、別の架台上に準備した第１の治具の上に配置・積層した。 Next, the reinforcing fiber bundle layer is sucked and transported by using a robot hand having an electrostatic adsorption mechanism, and prepared on another stand so that the orientation angle difference of each reinforcing fiber bundle layer becomes 90 °. The first jig was placed and laminated.
＜設置工程＞
積層した強化繊維束層を介して、第１の治具と第２の治具それぞれの開口部の位置が一致するように、第２の治具を積層した強化繊維束層の上に設置した。
<Installation process>
The second jig was placed on the laminated reinforcing fiber bundle layer through the laminated reinforcing fiber bundle layer so that the positions of the openings of the first jig and the second jig coincided with each other. .
＜把持工程＞
第１の治具および第２の治具の外周に沿った、対向する外端部を、磁力で固定する機構を有する固定治具（幅：５ｍｍ、長さ：４００ｍｍ、厚み：５ｍｍ）で挟み込むことにより、第１の治具、第２の治具および強化繊維束層を把持した。
<Gripping process>
The opposing outer end portions along the outer circumferences of the first jig and the second jig are sandwiched by a fixing jig (width: 5 mm, length: 400 mm, thickness: 5 mm) having a mechanism for fixing by magnetic force. Thus, the first jig, the second jig, and the reinforcing fiber bundle layer were gripped.
＜一体化工程＞
把持工程にて把持された第１の治具および第２の治具の開口部に、補助糸縫合ヘッドを用いて強化繊維束層を縫合・一体化した。補助糸にはポリエステル繊維（繊度：３０ｄｔｅｘ）を用い、縫合パターンは鎖編（ピッチｐ：５ｍｍ、補助糸同士の間隔ｔ：５ｍｍ）とした。
<Integration process>
The reinforcing fiber bundle layer was sutured and integrated into the openings of the first jig and the second jig held in the holding step by using an auxiliary thread sewing head. Polyester fibers (fineness: 30 dtex) were used for the auxiliary yarns, and the stitch pattern was a chain knitting (pitch p: 5 mm, spacing t between auxiliary yarns: 5 mm).
＜取り外し工程＞
固定治具を取り外し、縫合・一体化された強化繊維布帛を得た。強化繊維布帛を用いてアルミニウム製半球型（直径：１２０ｍｍ、高さ：６０ｍｍ）に賦形を試みた結果、強化繊維布帛は強化繊維束間に割れが生じることなく、型形状に沿った良好な賦形性能が確認できた。
<Removal process>
The fixing jig was removed to obtain a reinforced fiber fabric that was sewn and integrated. As a result of trying to form an aluminum hemispherical mold (diameter: 120 mm, height: 60 mm) using the reinforcing fiber cloth, the reinforcing fiber cloth is good in conformity with the mold shape without causing cracks between the reinforcing fiber bundles. The shaping performance was confirmed.
（実施例２）
＜強化繊維＞
強化繊維束として、Ｚｏｌｔｅｋ社製炭素繊維“Ｐａｎｅｘ３５”を使用した。本実施例においては、強化繊維束の幅が２５ｍｍ、強化繊維束の単糸数が５００００本の強化繊維束を使用した。
(Example 2)
<Reinforcing fiber>
As the reinforcing fiber bundle, carbon fiber “Panex 35” manufactured by Zoltek was used. In this example, a reinforcing fiber bundle having a reinforcing fiber bundle width of 25 mm and a reinforcing fiber bundle number of 50,000 was used.
＜第１の治具および第２の治具＞
第１の治具および第２の治具は、矩形形状の開口部を４か所有するアクリル板（サイズ：５００ｍｍ四方、厚み：１ｍｍ）を用いた。開口部は幅１００ｍｍ、長さ４５０ｍｍ、隣り合う開口部同士の距離間は１０ｍｍとした。
<First jig and second jig>
As the first jig and the second jig, acrylic plates (size: 500 mm square, thickness: 1 mm) having four rectangular openings were used. The opening was 100 mm wide, 450 mm long, and the distance between adjacent openings was 10 mm.
＜繊維配置工程＞
静電吸着機構を有する架台を準備し、ファイバープレイスメントヘッドを用いて前記架台上に前記強化繊維束を一方向に隙間なく引き揃え、４５０ｍｍ四方の強化繊維束層を２層作製した。
<Fiber placement process>
A gantry having an electrostatic adsorption mechanism was prepared, and the reinforcing fiber bundles were aligned on the gantry without gaps on the gantry using a fiber placement head, and two 450 mm square reinforcing fiber bundle layers were produced.
次に、静電吸着機構を有したロボットハンドを用いて前記強化繊維束層をそれぞれ吸着・運搬し、それぞれの強化繊維束層の配向角度差が１２０°となるように、別の架台上に準備した第１の治具の上に配置・積層した。 Next, each of the reinforcing fiber bundle layers is adsorbed and transported using a robot hand having an electrostatic adsorption mechanism, and placed on another gantry so that the orientation angle difference of each reinforcing fiber bundle layer becomes 120 °. It arrange | positioned and laminated | stacked on the prepared 1st jig | tool.
＜設置工程＞
積層した強化繊維束層を介して、第１の治具と第２の治具それぞれの開口部の位置が一致するように、第２の治具を積層した強化繊維束層の上に設置した。
<Installation process>
The second jig was placed on the laminated reinforcing fiber bundle layer through the laminated reinforcing fiber bundle layer so that the positions of the openings of the first jig and the second jig coincided with each other. .
＜把持工程＞
第１の治具および第２の治具の外周に沿った、対向する外端部を、磁力で固定する機構を有する固定治具（幅：５ｍｍ、長さ：４５０ｍｍ、厚み：５ｍｍ）で挟み込むことにより、第１の治具、第２の治具および強化繊維束層を把持した。
<Gripping process>
The opposing outer end portions along the outer circumferences of the first jig and the second jig are sandwiched by a fixing jig (width: 5 mm, length: 450 mm, thickness: 5 mm) having a mechanism for fixing by magnetic force. Thus, the first jig, the second jig, and the reinforcing fiber bundle layer were gripped.
＜一体化工程＞
把持工程にて把持された第１の治具および第２の治具の開口部に、補助糸縫合ヘッドを用いて強化繊維束層を縫合・一体化した。補助糸にはポリエステル繊維（繊度：３０ｄｔｅｘ）を用い、縫合パターンは１／１トリコット編（ピッチｐ：５ｍｍ、補助糸同士の間隔ｔ：１０ｍｍ）とした。
<Integration process>
The reinforcing fiber bundle layer was sutured and integrated into the openings of the first jig and the second jig held in the holding step by using an auxiliary thread sewing head. Polyester fibers (fineness: 30 dtex) were used for the auxiliary yarns, and the stitch pattern was a 1/1 tricot knitting (pitch p: 5 mm, spacing t between auxiliary yarns: 10 mm).
＜取り外し工程＞
固定治具を取り外し、縫合・一体化された強化繊維布帛を得た。強化繊維布帛を用いてアルミニウム製半球型（直径：１２０ｍｍ、高さ：６０ｍｍ）に賦形を試みた結果、強化繊維布帛は強化繊維束間に割れが生じることなく、型形状に沿った良好な賦形性能が確認された。
<Removal process>
The fixing jig was removed to obtain a reinforced fiber fabric that was sewn and integrated. As a result of trying to form an aluminum hemispherical mold (diameter: 120 mm, height: 60 mm) using the reinforcing fiber cloth, the reinforcing fiber cloth is good in conformity with the mold shape without causing cracks between the reinforcing fiber bundles. The shaping performance was confirmed.
（実施例３）
本実施例においては、実施例１と同様の強化繊維束、第１の治具、第２の治具を用いた。
(Example 3)
In this example, the same reinforcing fiber bundle, first jig, and second jig as in Example 1 were used.
＜繊維配置工程＞
静電吸着機構を有する架台と、その上に第１の治具を準備し、ファイバープレイスメントヘッドを用いて第１の治具上に強化繊維束を一方向に隙間なく引き揃え、４００ｍｍ四方の強化繊維束層を１層作製した。
<Fiber placement process>
A base having an electrostatic adsorption mechanism and a first jig are prepared on the base, and the fiber bundle head is used to align the reinforcing fiber bundle on the first jig without any gaps. One reinforcing fiber bundle layer was produced.
＜設置工程＞
実施例１と同様に、強化繊維束層を介して、第１の治具と第２の治具それぞれの開口部の位置が一致するように、第２の治具を強化繊維束層の上に設置した。
<Installation process>
As in Example 1, the second jig is placed on the reinforcing fiber bundle layer so that the positions of the openings of the first jig and the second jig coincide with each other through the reinforcing fiber bundle layer. Installed.
＜把持工程＞
第１の治具および第２の治具の外周に沿った、対向する外端部を、磁力で固定する機構を有する固定治具（幅：５ｍｍ、長さ：４００ｍｍ、厚み：５ｍｍ）で挟み込むことにより、第１の治具、第２の治具および強化繊維束層を把持した。
<Gripping process>
The opposing outer end portions along the outer circumferences of the first jig and the second jig are sandwiched by a fixing jig (width: 5 mm, length: 400 mm, thickness: 5 mm) having a mechanism for fixing by magnetic force. Thus, the first jig, the second jig, and the reinforcing fiber bundle layer were gripped.
＜一体化工程＞
実施例１と同様に、把持工程にて把持された第１の治具および第２の治具の開口部に補助糸縫合ヘッドを用いて、強化繊維束層を縫合・一体化した。補助糸にはポリエステル繊維（繊度：３０ｄｔｅｘ）を用い、縫合パターンは鎖編み（ピッチｐ：５ｍｍ、補助糸同士の間隔ｔ：５ｍｍ）とした。
<Integration process>
In the same manner as in Example 1, the reinforcing fiber bundle layer was sutured and integrated into the openings of the first jig and the second jig held in the holding process by using an auxiliary thread sewing head. Polyester fibers (fineness: 30 dtex) were used for the auxiliary yarns, and the stitch pattern was chain knitting (pitch p: 5 mm, spacing t between auxiliary yarns: 5 mm).
＜取り外し工程＞
実施例１と同様に、第１の治具、第２の治具および強化繊維束層を把持している固定治具を取り外し、縫合・一体化された強化繊維布帛を得た。強化繊維布帛を用いてアルミニウム製半球型（直径：１２０ｍｍ、高さ：６０ｍｍ）に賦形を試みた結果、強化繊維布帛は強化繊維束間に割れが生じることなく、型形状に沿った良好な賦形性能が確認された。
<Removal process>
In the same manner as in Example 1, the first jig, the second jig, and the fixing jig holding the reinforcing fiber bundle layer were removed to obtain a reinforced fiber fabric that was sewn and integrated. As a result of trying to form an aluminum hemispherical mold (diameter: 120 mm, height: 60 mm) using the reinforcing fiber cloth, the reinforcing fiber cloth is good in conformity with the mold shape without causing cracks between the reinforcing fiber bundles. The shaping performance was confirmed.
（比較例１）
本比較例においては、第１の治具、第２の治具を用いなかった以外は実施例１と同様にして繊維配置工程まで実施した。
(Comparative Example 1)
In this comparative example, the fiber placement process was performed in the same manner as in Example 1 except that the first jig and the second jig were not used.
＜一体化工程＞
繊維配置工程で積層された強化繊維束層に補助糸縫合ヘッドを用いて強化繊維束層の縫合を試みたが、縫合針を強化繊維束層に貫通させる際に、強化繊維束の一部が縫合針に引きずられて乱れ、強化繊維束層を縫合・一体化することができなかった。
<Integration process>
Although an attempt was made to sew the reinforcing fiber bundle layer using the auxiliary thread stitching head to the reinforcing fiber bundle layer laminated in the fiber placement step, when the suture needle was passed through the reinforcing fiber bundle layer, a part of the reinforcing fiber bundle was The reinforcing fiber bundle layer could not be sutured and integrated by being dragged and disturbed by the suture needle.
（比較例２）
本比較例においては、第１の治具、第２の治具を用いなかった以外は実施例３と同様にして繊維配置工程まで実施した。一体化工程では、強化繊維束層を補助糸で縫合・一体化する方法ではなく、強化繊維束層に樹脂バインダ（エポキシ樹脂製）を散布・一体化する方法を用いた。
(Comparative Example 2)
In this comparative example, the fiber placement process was performed in the same manner as in Example 3 except that the first jig and the second jig were not used. In the integration step, a method of spraying and integrating a resin binder (made of epoxy resin) on the reinforcing fiber bundle layer was used instead of a method of stitching and integrating the reinforcing fiber bundle layer with an auxiliary thread.
＜一体化工程＞
樹脂バインダとして用いるエポキシ樹脂を樹脂タンク内で２００℃に加熱した後、樹脂散布装置を用いて強化繊維束層の片面に６ｇ／ｍ２の目付けで散布し、１００℃の鉄板で加圧・含浸して、強化繊維束層を一体化し、強化繊維布帛を得た。強化繊維布帛を用いて半球型に賦形を試みた結果、強化繊維布帛は強化繊維束間に割れが生じ、強化繊維布帛が形態を保持できず、良好な賦形性を得られなかった。
<Integration process>
After the epoxy resin used as a resin binder is heated to 200 ° C in a resin tank, it is sprayed with a weight of 6 g / m 2 on one side of the reinforcing fiber bundle layer using a resin spraying device, and pressurized and impregnated with a 100 ° C iron plate Then, the reinforcing fiber bundle layer was integrated to obtain a reinforcing fiber fabric. As a result of attempting to form a hemispherical shape using the reinforcing fiber fabric, the reinforcing fiber fabric was cracked between the reinforcing fiber bundles, and the reinforcing fiber fabric could not retain its form, and good shapeability could not be obtained.
１１０、１２０、１３０、１４０、１５０、１６０ 第１の治具
１１１、１２１、１３１、１４１、１５１、１６１、１７１ 開口部
１１２、１２２ 架台
１１３、１２３ ファイバープレイスメントヘッド
１１４、１２４、１８４ 強化繊維束
１１５、１２５ クリール
１１６、１２６、１３６、１４６、１５６ 強化繊維束層
１１７ 搬送装置
１１８ Ｘ軸リニアガイド
１１９ Ｙ軸リニアガイド
１３８、１４８、１５８、１６８ 第２の治具
１４９、１５９、１６９ 把持機構
１５２ 補助糸縫合ヘッド
１５７、１６７、１８７ 補助糸
１７０ 第１の治具または第２の治具
２００ 強化繊維布帛
110, 120, 130, 140, 150, 160 First jig 111, 121, 131, 141, 151, 161, 171 Opening 112, 122 Base 113, 123 Fiber placement head 114, 124, 184 Reinforced fiber bundle 115, 125 Creel 116, 126, 136, 146, 156 Reinforced fiber bundle layer 117 Conveying device 118 X-axis linear guide 119 Y-axis linear guide 138, 148, 158, 168 Second jig 149, 159, 169 Holding mechanism 152 Auxiliary thread stitching heads 157, 167, 187 Auxiliary thread 170 First jig or second jig 200 Reinforcing fiber fabric
Claims (6)
ａ−１）一方向に引き揃うように強化繊維束を所定位置に配置し、前記強化繊維束を保持させた少なくとも１層の強化繊維束層を、開口部を有する第１の治具の表面上に配置する繊維配置工程
ａ−２）開口部を有する第１の治具の所定位置に、一方向に引き揃うように強化繊維束を配置した強化繊維束層を少なくとも１層形成する繊維配置工程
ｂ）前記強化繊維束層を挟み込むように、開口部を有する第２の治具を設置する設置工程
ｃ）前記第１の治具および前記第２の治具に挟み込み圧力もしくは張力を付与して前記強化繊維束層を把持する把持工程
ｄ）前記第１の治具および／または前記第２の治具の開口部から前記強化繊維束層を前記補助糸で一体化する一体化工程
ｅ）前記第１の治具および前記第２の治具を取り外す取り外し工程 A method for producing a reinforced fiber base material comprising at least one reinforced fiber bundle layer in which reinforced fiber bundles are aligned in one direction, wherein the reinforced fiber bundle is integrated with an auxiliary yarn, comprising: a-1) or a -2) The manufacturing method of the reinforced fiber base material which has the process of b) -e) after passing through any process.
a-1) A surface of a first jig having an opening, at least one reinforcing fiber bundle layer in which reinforcing fiber bundles are arranged at predetermined positions so as to be aligned in one direction and the reinforcing fiber bundles are held. Fiber placement step a-2) to be placed on top Fiber placement for forming at least one reinforcing fiber bundle layer in which reinforcing fiber bundles are arranged so as to be aligned in one direction at a predetermined position of a first jig having an opening. Step b) Installation step of installing a second jig having an opening so as to sandwich the reinforcing fiber bundle layer c) A sandwiching pressure or tension is applied to the first jig and the second jig. Gripping step of gripping the reinforcing fiber bundle layer d) Integration step of integrating the reinforcing fiber bundle layer with the auxiliary thread from the opening of the first jig and / or the second jig e) Removal step of removing the first jig and the second jig
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016176381A JP2018039218A (en) | 2016-09-09 | 2016-09-09 | Method for producing reinforcing fiber base material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016176381A JP2018039218A (en) | 2016-09-09 | 2016-09-09 | Method for producing reinforcing fiber base material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2018039218A true JP2018039218A (en) | 2018-03-15 |
Family
ID=61624821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016176381A Pending JP2018039218A (en) | 2016-09-09 | 2016-09-09 | Method for producing reinforcing fiber base material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2018039218A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900015180A1 (en) * | 2019-08-28 | 2021-02-28 | Lorenzo Coppini | A method and a system for the creation of a non-woven fabric |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014100911A (en) * | 2012-10-25 | 2014-06-05 | Toray Ind Inc | Preform and production method of the same |
| JP2017159652A (en) * | 2016-03-02 | 2017-09-14 | 東レ株式会社 | Reinforced fiber laminated sheet and fiber-reinforced resin molded body |
| JP6439528B2 (en) * | 2015-03-23 | 2018-12-19 | 東レ株式会社 | Method for producing reinforcing fiber substrate |
-
2016
- 2016-09-09 JP JP2016176381A patent/JP2018039218A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014100911A (en) * | 2012-10-25 | 2014-06-05 | Toray Ind Inc | Preform and production method of the same |
| JP6439528B2 (en) * | 2015-03-23 | 2018-12-19 | 東レ株式会社 | Method for producing reinforcing fiber substrate |
| JP2017159652A (en) * | 2016-03-02 | 2017-09-14 | 東レ株式会社 | Reinforced fiber laminated sheet and fiber-reinforced resin molded body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900015180A1 (en) * | 2019-08-28 | 2021-02-28 | Lorenzo Coppini | A method and a system for the creation of a non-woven fabric |
| WO2021038488A1 (en) * | 2019-08-28 | 2021-03-04 | Coppini Lorenzo | Method and system for creating a non-woven fabric |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2401740C2 (en) | Method of producing one- or multilayer fibrous workpiece in compliance with tfp-process | |
| RU2388599C2 (en) | Device to produce fibrous workpiece with random geometry of surface using tfp-technologies | |
| JP6699752B2 (en) | Reinforcement base material for composite material, composite material, and method for manufacturing reinforcement base material for composite material | |
| CN107428033B (en) | Sheet-like reinforcing fiber base material, preform, and fiber-reinforced resin molded article | |
| JP6946666B2 (en) | Reinforced fiber laminated sheet and fiber reinforced resin molded product | |
| JP6109145B2 (en) | An apparatus and method for producing a fiber preform, which is a preform in particular for producing a fiber-reinforced plastic member | |
| KR101688717B1 (en) | Reinforced thermoplastic resin sheet material and process for producing the same | |
| JP6439528B2 (en) | Method for producing reinforcing fiber substrate | |
| JP2015030959A (en) | Woven fabric, and fiber bundle and fiber-reinforced composite material for composing woven fabric | |
| JP7087337B2 (en) | Reinforced fiber base material, reinforcing fiber laminate and fiber reinforced resin | |
| JP2009019201A (en) | Molding material, preform and fiber-reinforced resin | |
| JP6938987B2 (en) | Method for manufacturing reinforcing fiber base material, manufacturing method for reinforcing fiber preform, and manufacturing method for fiber reinforced composite material molded product | |
| JP2018039218A (en) | Method for producing reinforcing fiber base material | |
| JP2015040348A (en) | Woven fabric base material, method for weaving the same, and weaving machine | |
| KR20180080950A (en) | Planar element with partially fixing special line, manufacturing apparatus and manufacturing method | |
| JP2017065066A (en) | Method and device for manufacturing preform | |
| US20190070829A1 (en) | Reinforced fiber laminate sheet, fiber-reinforced resin molded body, and method of manufacturing reinforced fiber laminate sheet | |
| JP7467840B2 (en) | Reinforced fiber substrate, reinforced fiber laminate, and fiber reinforced resin | |
| CN109923254B (en) | Reinforcing base material for composite material, and method for producing reinforcing base material for composite material | |
| JP2006002302A (en) | Carbon fiber laminated cloth | |
| US20240059046A1 (en) | Reinforcing fiber base material for resin transfer molding, method of producing same, reinforcing fiber laminate for resin transfer molding, and fiber-reinforced plastic | |
| JP2005023469A (en) | Bias-reinforced fiber sheet | |
| JP2018165420A (en) | Fiber-reinforced sheet | |
| JP2018165045A (en) | Reinforced fiber laminate sheet and method of producing resin molding | |
| JP2017155391A (en) | Base material for fiber-reinforced plastic, multilayered base material for fiber-reinforced plastic, preform for fiber-reinforced plastic, and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190822 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A132 Effective date: 20200811 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200812 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20210302 |