JPH06270254A - Production of fiber reinforced thermoplastic resin molded product - Google Patents
Production of fiber reinforced thermoplastic resin molded productInfo
- Publication number
- JPH06270254A JPH06270254A JP5059122A JP5912293A JPH06270254A JP H06270254 A JPH06270254 A JP H06270254A JP 5059122 A JP5059122 A JP 5059122A JP 5912293 A JP5912293 A JP 5912293A JP H06270254 A JPH06270254 A JP H06270254A
- Authority
- JP
- Japan
- Prior art keywords
- partial
- mold
- materials
- thermoplastic resin
- pressure
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、中空の繊維強化熱可塑
性樹脂成形品の製造方法に関し、特に繊維強化熱可塑性
樹脂からなる複数の部分材を接合した際に、接合部位の
表面が連続かつ平滑となり、なおかつ接合部位の機械的
強度にも優れた成形品を得ることができるようにした製
造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a hollow fiber-reinforced thermoplastic resin molded article, and in particular, when a plurality of partial materials made of fiber-reinforced thermoplastic resin are bonded, the surfaces of the bonding sites are continuous and continuous. The present invention relates to a manufacturing method which makes it possible to obtain a molded product which is smooth and which is excellent in mechanical strength of a bonded portion.
【０００２】[0002]
【従来の技術】ゴルフクラブヘッド（以後ヘッドと略記
する）などの中空品の製造方法として、繊維強化熱可塑
性樹脂プリプレグを用いてそのヘッドを２以上に分割し
た概略形状を有する部分材を成形し、その部分材を仮組
み立てした状態で成形型内に収めて、内圧を印加しつつ
加熱成形する方法が本発明者らによって提案されている
（特願平３−１４０４６３）。図６及び図７は、そのよ
うなヘッドの製造方法の一例を示す図であり、図６は部
分材の形状の例を示す斜視図、図７はその部分材を成形
型内に挿入した状態を示す説明図である。図中符号１１
は部分材であり、その部分材１１は、フェース面１２に
平行な面でヘッドを２分割した概略形状を有するフェー
ス側部分材１とバック側部分材２の２個からなってい
る。そのバック側部分材２のソール面１３には、貫通孔
１５が設けられている。また、これらの部分材１１は、
シート状の繊維強化熱可塑性樹脂プリプレグを、深しぼ
りによって成形して形成されている。2. Description of the Related Art As a method for manufacturing a hollow article such as a golf club head (hereinafter abbreviated as a head), a fiber reinforced thermoplastic resin prepreg is used to mold a partial material having a general shape obtained by dividing the head into two or more parts. The inventors of the present invention have proposed a method in which the partial materials are temporarily assembled and housed in a molding die, and heat molding is performed while applying an internal pressure (Japanese Patent Application No. 3-140463). 6 and 7 are views showing an example of a method of manufacturing such a head, FIG. 6 is a perspective view showing an example of the shape of a partial material, and FIG. 7 is a state in which the partial material is inserted into a molding die. FIG. Reference numeral 11 in the figure
Is a partial material, and the partial material 11 is composed of two parts, a face-side partial material 1 and a back-side partial material 2, each of which has a schematic shape in which the head is divided into two parts on a plane parallel to the face surface 12. The sole surface 13 of the back side member 2 is provided with a through hole 15. Moreover, these partial materials 11 are
A sheet-shaped fiber-reinforced thermoplastic resin prepreg is formed by deep drawing.
【０００３】次いで、これらの部分材１１を仮組み立て
した状態で、図７に示すように成形型３内に収める。こ
の成形型３は、その内壁がヘッドの外面形状をなしてい
る中空体であって、その壁面の前記部分材１１の貫通孔
１５に当たる位置に貫通孔１６が設けられている。ま
た、部分材１１の内側にはシリコーン樹脂などからなる
カバーバルーン１８を挿入し、このカバーバルーン１８
の口部は、部分材１１の貫通孔１５及び成形型３の貫通
孔１６を挿通して図示しない加圧装置に接続されてお
り、この加圧装置から加圧媒体をカバーバルーン１８内
部に導入し、部分材１１を内側から加圧できるように構
成されている。さらに、このように構成された成形型３
は、図示しない真空加熱装置内に収められている。Next, these partial members 11 are temporarily assembled and then housed in a molding die 3 as shown in FIG. The molding die 3 is a hollow body whose inner wall forms the outer surface of the head, and a through hole 16 is provided at a position on the wall surface that abuts the through hole 15 of the partial material 11. Further, a cover balloon 18 made of a silicone resin or the like is inserted inside the partial material 11, and the cover balloon 18
Is connected to a pressurizing device (not shown) through the through hole 15 of the partial material 11 and the through hole 16 of the mold 3, and the pressurizing medium is introduced into the cover balloon 18 from this pressurizing device. However, the partial material 11 can be pressed from the inside. Further, the molding die 3 configured in this way
Are housed in a vacuum heating device (not shown).
【０００４】この状態で、真空加熱装置内を排気して、
部分材１１と成形型３との間隙を減圧し、カバーバルー
ン１８内に窒素ガス等の加圧媒体を導入して内圧を印加
するとともに加熱する。部分材１１は、この加熱によっ
て再び溶融状態となるとともに、前記排気ならびに加圧
によって、その内方から外方に向けて加圧されることに
なり、成形型３の内面形状に沿った形状に賦型される。
さらに、成形型３を冷却した後、加圧及び減圧状態を解
除してカバーバルーン１８を抜取り、成形型３を脱型す
れば、ヘッド形状を有する中空成形体が得られる。In this state, the vacuum heating device is evacuated,
The gap between the partial material 11 and the molding die 3 is decompressed, and a pressurized medium such as nitrogen gas is introduced into the cover balloon 18 to apply an internal pressure and to heat it. The partial material 11 is brought into a molten state again by this heating, and is pressurized from the inside to the outside by the exhaust and pressurization, so that the shape of the partial material 11 conforms to the inner surface shape of the molding die 3. Be imprinted.
Further, after cooling the molding die 3, the pressurizing and depressurizing states are released, the cover balloon 18 is pulled out, and the molding die 3 is demolded to obtain a hollow molding having a head shape.
【０００５】このような方法によって中空成形品を製造
することにより、連続かつ平滑な成形面が得られるとい
う改善が見られた。しかし、ある程度の強度を維持する
ためには、図８に例を示すように、各部分材の接合部
は、その端面をテーパ状に削る、段部を形成する、ある
いは切り込みを入れる等して重なり部分を設ける必要が
あった。そのために、各部分材の接合端面を例えば図８
のように加工するという手間のかかる工程が不可欠であ
った。しかも、このような方法で接合した成形体の強度
が十分でないこともあった。この強度的な問題を解決す
るため、接合部に同質の材料からなる補強片を添えて成
形する試みもなされており、大きな強度を得ることはで
きたが、上記の工程に、さらに補強片を添接するという
工程が加えられたことになり、工程の簡略化という面で
は問題を残していた。By producing a hollow molded article by such a method, an improvement that a continuous and smooth molding surface can be obtained was observed. However, in order to maintain a certain level of strength, as shown in the example of FIG. 8, the joint portion of each part material is formed by cutting the end face into a taper shape, forming a step portion, or making a notch. It was necessary to provide an overlapping part. For that purpose, the joint end faces of the respective partial materials are, for example, as shown in FIG.
The laborious process of processing like this was essential. Moreover, the strength of the molded product joined by such a method may not be sufficient. In order to solve this strength problem, an attempt has been made to attach a reinforcing piece made of a material of the same quality to the joint, and a large amount of strength could be obtained. Since the step of splicing was added, there was a problem in terms of simplification of the step.
【０００６】[0006]
【発明が解決しようとする課題】従って、本発明におけ
る課題は、２個以上の部分材に内圧を印加しながら加熱
成形する繊維強化熱可塑性樹脂形状物の製造方法におい
て、工程が簡単であり、なおかつ各部分材の接合部で十
分な強度が保てるような製造方法を提供することにあ
る。SUMMARY OF THE INVENTION Accordingly, the object of the present invention is to simplify the steps in the method for producing a fiber-reinforced thermoplastic resin shaped article in which two or more partial materials are heat-formed while applying an internal pressure. Further, it is to provide a manufacturing method capable of maintaining sufficient strength at the joint portion of each of the partial materials.
【０００７】[0007]
【課題を解決するための手段】かかる課題は、繊維強化
熱可塑性樹脂からなる複数の部分材を接合して中空の成
形品を製造する際に、前記複数の部分材同志を、嵌合し
た状態で成形型内に収め、内圧を印加しつつ加熱して接
合一体化することを特徴とする繊維強化熱可塑性樹脂成
形品の製造方法によって解決できる。[Means for Solving the Problems] The problem is that when a plurality of partial materials made of fiber reinforced thermoplastic resin are joined to manufacture a hollow molded article, the plurality of partial materials are fitted together. It can be solved by a method for producing a fiber-reinforced thermoplastic resin molded article, which is characterized in that it is placed in a molding die and heated while applying internal pressure to join and integrate.
【０００８】以下に、本発明の製造方法をヘッドの製造
例によって詳細に説明する。まず、所望の厚みを有する
シート状の繊維強化熱可塑性樹脂プリプレグを用意す
る。このプリプレグは熱可塑性樹脂フィルムと強化繊維
シートとを所望の厚みとなるように複数枚交互に積層さ
せて加圧加熱する方法によって形成した。次に、このプ
リプレグを深しぼりによって、図６に示したものと同様
にヘッドをフェース面に平行な面で切断した概略形状を
有するフェース側部分材１と、バック側部分材２を成形
した。The manufacturing method of the present invention will be described in detail below with reference to manufacturing examples of heads. First, a sheet-shaped fiber-reinforced thermoplastic resin prepreg having a desired thickness is prepared. This prepreg was formed by a method of alternately laminating a plurality of thermoplastic resin films and reinforcing fiber sheets so as to have a desired thickness and pressurizing and heating. Next, the prepreg was deep-squeezed to form a face-side partial material 1 and a back-side partial material 2 each having a schematic shape obtained by cutting the head along a plane parallel to the face surface as shown in FIG.
【０００９】これに続く工程を、図面に従って説明す
る。図１に示したように、上記フェース側部分材１は、
フェース面１２とそのフェース面１２に略垂直に形成さ
れた折り返し部２０とからなっている。この折り返し部
２０の内寸は、バック側部分材２の開口部の外寸とほぼ
同じ寸法に形成されており、バック側部分材２は、その
開口部においてフェイス側部分材１の折り返し部２０に
嵌合される。その際、フェース側部分材１とバック側部
分材２の重なり部分６の幅は、１０ｍｍ以上となるよう
に嵌合されている。この重なり部分の幅が１０ｍｍより
短いと、十分な強度が得られなくなる。この状態を、仮
組み立て状態とする。The subsequent steps will be described with reference to the drawings. As shown in FIG. 1, the face side material 1 is
The face surface 12 and a folded-back portion 20 formed substantially perpendicular to the face surface 12 are provided. The inner dimension of the folded-back portion 20 is formed to be substantially the same as the outer dimension of the opening portion of the back-side portion material 2, and the back-side portion material 2 has the folded-back portion 20 of the face-side portion material 1 in the opening portion. Is fitted to. At that time, the width of the overlapping portion 6 of the face-side partial material 1 and the back-side partial material 2 is fitted to be 10 mm or more. If the width of this overlapping portion is shorter than 10 mm, sufficient strength cannot be obtained. This state is called a temporary assembly state.
【００１０】この仮組み立てされた部分材の内側に、シ
リコーン樹脂などからなるカバーバルーン４を挿入す
る。このカバーバルーン４の口部５は、バック側部分材
２及び成形型３に設けられた図示しない貫通孔を挿通し
て、図示しない加圧装置に接続されている。次に、この
仮組み立てされた部分材を成形型３内に収容する。この
成形型３は、その内壁がヘッドの外部形状をなしてい
る。さらに、このように仮組み立てされた部分材を収容
した成形型３を、図示しない真空加熱装置内に収める。A cover balloon 4 made of a silicone resin or the like is inserted inside the temporarily assembled partial material. The mouth portion 5 of the cover balloon 4 is connected to a pressurizing device (not shown) through a not-shown through hole provided in the back side material 2 and the molding die 3. Next, the temporarily assembled partial material is housed in the molding die 3. The inner wall of the molding die 3 has an outer shape of the head. Further, the molding die 3 accommodating the partial materials temporarily assembled in this way is accommodated in a vacuum heating device (not shown).
【００１１】この状態で、真空加熱装置内を排気して、
仮組み立てされた部分材と成形型３との間隙を減圧し、
加圧装置からカバーバルーン４内に窒素ガス等の加圧媒
体を導入して内圧を印加するとともに所定の温度に加熱
する。部分材は、この加熱によって再び溶融状態となる
とともに、前記排気ならびに加圧によって、その内方か
ら外方に向けて加圧されることになり、成形型３の内面
形状に沿った形状に賦型される。所定時間の経過後加熱
を終了し、成形型３が冷却されてから、加圧及び減圧状
態を解除してカバーバルーン４を抜取る。図２は、その
ときの様子を示す説明図である。成形型３の内面に沿っ
た外面形状を有する中空成形体７が成形されている。ま
た、フェース側部分材１とバック側部分材２の接合部８
では、その成形体７の厚さがやや厚くなっているが、そ
の外面は連続かつ平滑である。In this state, the vacuum heating device is evacuated,
Reduce the pressure between the temporarily assembled parts and the mold 3.
A pressure medium such as nitrogen gas is introduced into the cover balloon 4 from a pressure device to apply an internal pressure and heat it to a predetermined temperature. The partial material is brought into a molten state again by this heating, and is pressurized from the inside to the outside by the exhaust and pressurization, so that the partial material is shaped into a shape along the inner surface shape of the molding die 3. Typed. After the elapse of a predetermined time, the heating is finished, and after the molding die 3 is cooled, the pressurized and depressurized states are released and the cover balloon 4 is removed. FIG. 2 is an explanatory diagram showing the situation at that time. A hollow molded body 7 having an outer surface shape along the inner surface of the molding die 3 is molded. In addition, the joint portion 8 of the face side material 1 and the back side material 2
Then, although the thickness of the molded body 7 is slightly thicker, the outer surface thereof is continuous and smooth.
【００１２】図３は、その部分材の接合部８の断面を模
式的に示した図である。フェース側部分材１とバック側
部分材２の境界面は、図中点線で示した位置付近に存在
するが、繊維強化熱可塑性樹脂を一度溶融させているた
めに、両部分材が混じり合っており明確な区別はできな
い。また、その境界面付近にも強化繊維９が存在し、な
おかつその強化繊維９が、境界面の両側にわたって配置
されているので、境界面においても強度が保たれれい
る。FIG. 3 is a diagram schematically showing a cross section of the joint portion 8 of the partial material. The boundary surface between the face-side part material 1 and the back-side part material 2 exists near the position shown by the dotted line in the figure, but since the fiber-reinforced thermoplastic resin is once melted, both part materials are mixed. There is no clear distinction. Further, since the reinforcing fiber 9 exists near the boundary surface and the reinforcing fiber 9 is arranged on both sides of the boundary surface, the strength is maintained also at the boundary surface.
【００１３】最後に、成形型３を脱型して、連続かつ平
滑な外表面を有するヘッド形状の中空成形体７を得るこ
とができ、この中空成形体７は、その接合部においても
十分な強度を有している。Finally, the molding die 3 can be removed from the mold to obtain a head-shaped hollow molded body 7 having a continuous and smooth outer surface, and the hollow molded body 7 has a sufficient joint portion. Has strength.
【００１４】本発明で用いられる繊維強化熱可塑性樹脂
（以下ＦＲＴＰと略記する）は、強化繊維と熱可塑性樹
脂とからなるもので、熱可塑性樹脂としては、ポリアミ
ド、ポリブチレンテレフタレート、ポリオキシメチレン
（アセタール樹脂）、ポリカーボネート、変性ポリフェ
ニレンスルフィド等のエンジニアプラスチックが好適に
用いられ、これらは単独でも、２種類以上を混合して用
いてもよい。The fiber-reinforced thermoplastic resin (hereinafter abbreviated as FRTP) used in the present invention comprises a reinforcing fiber and a thermoplastic resin, and examples of the thermoplastic resin include polyamide, polybutylene terephthalate and polyoxymethylene ( Engineered plastics such as acetal resin), polycarbonate, and modified polyphenylene sulfide are preferably used, and these may be used alone or in combination of two or more kinds.
【００１５】本発明のＦＲＴＰで用いられる強化繊維と
しては、カーボン繊維、アラミド繊維、ガラス繊維等
が、単独使用または２種類以上の併用で用いられる。ま
た、これらの強化繊維の使用形態としては、多数本のフ
ィラメントを一方向に並べたロービングが主に用いられ
るが、それに限られることなく、ロービングクロス等も
好適に使用される。As the reinforcing fiber used in the FRTP of the present invention, carbon fiber, aramid fiber, glass fiber and the like are used alone or in combination of two or more kinds. In addition, as a usage form of these reinforcing fibers, roving in which a large number of filaments are arranged in one direction is mainly used, but not limited to this, roving cloth or the like is also preferably used.
【００１６】この強化繊維と熱可塑性樹脂とからなるＦ
ＲＴＰプリプレグの形態は、シート状、テープ状等があ
るが、深しぼりによって成形する場合はシート状のもの
が好ましい。プリプレグの製造は、例えば粉末状の熱可
塑性樹脂を強化繊維上に散布し、加熱溶融して含浸せし
める方法や、熱可塑性樹脂をフィラメント化し、そのフ
ィラメントを強化繊維とともにロービング化する方法、
あるいはフィルム状の熱可塑性樹脂とクロス状の強化繊
維とを複数枚交互に重ねて加圧加熱する方法等によって
行われる。また、プリプレグ中の強化繊維量は、体積比
で４０〜７０％程度が好ましい。F composed of this reinforcing fiber and a thermoplastic resin
The RTP prepreg may be in the form of a sheet, a tape, or the like, but in the case of molding by deep drawing, the sheet is preferable. The prepreg is manufactured, for example, by spraying a powdery thermoplastic resin on the reinforcing fibers, heating and melting to impregnate the thermoplastic resin into a filament, and roving the filament with the reinforcing fiber.
Alternatively, it is carried out by a method of alternately stacking a plurality of film-like thermoplastic resins and cloth-like reinforcing fibers and heating under pressure. Further, the amount of the reinforcing fibers in the prepreg is preferably about 40 to 70% by volume.
【００１７】ＦＲＴＰプリプレグから成形される部分材
の形状は、ヘッドの概略形状を好ましくは２以上に分割
して得られる中空の形状であって、逆テーパ状となる部
分が無くて深しぼりにより成形可能な形状であれば任意
でよいが、各部分材同志を嵌合して仮組み立てできる形
状とするのが好ましい。さらに、打球面となるフェース
面は、打球に対する強度を保つとともに、深しぼりによ
る成形が容易にできるようにするために、その周囲に少
なくとも５ｍｍ以上の折り返し部分を有する形状、ある
いはフェース面とソール面とが一体化された形状である
ことが好ましい。The shape of the partial material molded from the FRTP prepreg is a hollow shape obtained by dividing the schematic shape of the head into preferably two or more parts, and there is no portion that becomes an inverse taper shape and is molded by deep drawing. Any shape is possible as long as it is possible, but it is preferable that each of the partial materials be fitted and temporarily assembled. Further, the face surface which becomes the hitting surface has a shape having a folded portion of at least 5 mm or more around it in order to maintain the strength against the hitting ball and to facilitate molding by deep drawing, or the face surface and the sole surface. It is preferable that and have an integrated shape.
【００１８】例えば、上記説明では部分材の形状とし
て、ヘッドの概略形状を２分割したものを用いたが、こ
れに限られず任意の位置で複数個に分割した部分材を用
いることができる。また、図４に示したように、嵌合さ
れる部分材の一方または両方に切込み１０を設け、その
切込み１０の部分で嵌合することによって、部分材同志
の位置決めが容易になり、成形後の接合部の厚さと他の
部分の厚さとの差を小さくすることができる。For example, in the above description, as the shape of the partial material, the general shape of the head is divided into two, but the present invention is not limited to this, and a partial material divided into a plurality of pieces at any position can be used. Further, as shown in FIG. 4, by providing a cut 10 in one or both of the fitted partial materials, and fitting at the cut 10, the positioning of the partial materials becomes easy, and after molding. It is possible to reduce the difference between the thickness of the joint portion and the thickness of other portions.
【００１９】また、ヘッドの内部を加圧させるための貫
通孔は、部分材の任意の位置に設けて良いが、成形後の
外観を考慮するとソール面に設けるのが好ましい。カバ
ーバルーンは、シリコーン樹脂等からなるバルーンであ
り、その厚みは、０．０５〜２ｍｍのもの、好ましくは
０．２〜１ｍｍのものが用いられる。加圧媒体は、空
気、窒素ガス等の気体でもよいが、オイル等の液体であ
ってもよい。The through hole for pressurizing the inside of the head may be provided at any position of the partial material, but it is preferably provided on the sole surface in consideration of the appearance after molding. The cover balloon is a balloon made of a silicone resin or the like, and has a thickness of 0.05 to 2 mm, preferably 0.2 to 1 mm. The pressurizing medium may be a gas such as air or nitrogen gas, but may be a liquid such as oil.
【００２０】成形時の加熱、加圧の条件は、温度２５０
〜２８０℃、圧力８〜１５ｋｇ／ｃｍ2 、時間１０〜３
０分程度が好ましいが、この範囲に限られるものではな
く、使用する熱可塑性樹脂の種類や厚さ、ヘッドの寸法
等に応じて適宜変更することができる。また、部分材と
成形型との間隙の減圧の度合は、０．０１〜１ｋｇ／ｃ
ｍ2程度が好ましい。また、減圧した後、１〜３ｋｇ／
ｃｍ2 程度の予備圧を印加して、２５０℃程度まで昇温
し、その後内圧を上昇させて加圧成形することもでき
る。The condition of heating and pressurizing at the time of molding is a temperature of 250.
~ 280 ° C, pressure 8-15 kg / cm 2 , time 10-3
About 0 minutes is preferable, but it is not limited to this range and can be appropriately changed depending on the type and thickness of the thermoplastic resin used, the size of the head, and the like. The degree of pressure reduction in the gap between the partial material and the molding die is 0.01 to 1 kg / c.
About m 2 is preferable. Also, after depressurizing, 1-3 kg /
It is also possible to apply a preliminary pressure of about cm 2 to raise the temperature to about 250 ° C., and then increase the internal pressure to perform pressure molding.
【００２１】以下に、実施例を挙げて本発明の製造方法
を説明する。 （実施例１）まず、ポリカーボネートフィルム１３枚
と、カーブンファイバクロス（３Ｋクロス平織り、２０
０ｇ／ｍ2 ）１３枚を交互に積層し、２００℃に加熱し
た。この温度を維持した状態で、断続的に加圧を行い、
樹脂の含浸均質化、気泡の除去を行った。この加圧操作
は３０ｋｇ／ｃｍ2 の圧力で８回行い、操作時間は１６
分とした。この後、さらに２５０℃まで加熱して、この
温度を維持した状態で１５ｋｇ／ｃｍ2 の圧力で２０分
間連続加圧して厚さ３ｍｍのＦＲＴＰプリプレグシート
を形成した。The production method of the present invention will be described below with reference to examples. (Example 1) First, 13 polycarbonate films and a curved fiber cloth (3K cloth plain weave, 20
13 sheets of 0 g / m 2 ) were alternately laminated and heated to 200 ° C. While maintaining this temperature, pressurize intermittently,
The resin was impregnated and homogenized, and bubbles were removed. This pressurizing operation was performed 8 times at a pressure of 30 kg / cm 2 , and the operating time was 16
Minutes Then, it was further heated to 250 ° C. and, while maintaining this temperature, continuously pressed at a pressure of 15 kg / cm 2 for 20 minutes to form a FRTP prepreg sheet having a thickness of 3 mm.
【００２２】得られたＦＲＴＰプリプレグシートを、深
しぼりによって図６に示したような形状の２種類の部分
材を各々成形した。即ち、上記ＦＲＴＰプリプレグシー
トを、上記部分材各々の形状を有する金型に配し、１８
０℃で６分間放置してプリプレグシートを軟化させた
後、この温度を維持しつつ２分間プレスを行った。得ら
れた成形品の不要な部分を切り落として形状を整えた。The FRTP prepreg sheet thus obtained was formed into two kinds of partial materials each having a shape as shown in FIG. 6 by deep drawing. That is, the FRTP prepreg sheet is placed in a mold having the shape of each of the partial materials,
After allowing the prepreg sheet to stand at 0 ° C. for 6 minutes to soften it, pressing was performed for 2 minutes while maintaining this temperature. Unnecessary parts of the obtained molded product were cut off to adjust the shape.
【００２３】このようにして得られた部分材を嵌合し、
成形型内に収納した。また、その部分材内に、厚さ０．
５ｍｍのシリコーンバルーンを挿入し、その口部は貫通
孔を挿通して加圧装置に接続した。さらに、その成形型
を、真空加熱装置内に収容し、その真空加熱装置内を約
−１ｋｇ／ｃｍ2に減圧した。次いで、上記シリコーン
バルーン内に窒素ガスを導入して予備圧を印加し、部分
材の内圧を３ｋｇ／ｃｍ2 にするとともに予備加熱を行
い、装置内を２５０℃とした。さらに、真空加熱装置内
を２７０℃に昇温させるとともにシリコーンバルーン内
に窒素ガスを導入して内圧を１０ｋｇ／ｃｍ2にし、こ
の状態で２０分間放置した。その後真空状態を破り、成
形型を真空加熱装置から取り出し冷却した。成形型の温
度が約８０℃まで冷却された時点で、加圧状態を解除し
て成形型を脱型し、シリコーンバルーンを抜き取ってヘ
ッド形状の中空成形体を得た。By fitting the partial materials thus obtained,
Stored in the mold. In addition, the thickness of 0.
A 5 mm silicone balloon was inserted, and the mouth part was inserted through the through hole and connected to the pressurizing device. Further, the molding die was housed in a vacuum heating device, and the inside of the vacuum heating device was depressurized to about -1 kg / cm 2 . Next, nitrogen gas was introduced into the silicone balloon to apply a preliminary pressure, the internal pressure of the partial material was adjusted to 3 kg / cm 2 , and preliminary heating was performed, and the inside of the apparatus was heated to 250 ° C. Further, the temperature inside the vacuum heating device was raised to 270 ° C., and nitrogen gas was introduced into the silicone balloon to adjust the internal pressure to 10 kg / cm 2 , and this state was left for 20 minutes. Then, the vacuum state was broken, and the mold was taken out from the vacuum heating device and cooled. When the temperature of the mold was cooled to about 80 ° C., the pressure was released, the mold was removed, and the silicone balloon was pulled out to obtain a head-shaped hollow molded body.
【００２４】（試験例１）実施例１と同様の、厚さ３ｍ
ｍのＦＲＴＰプリルレグシートを２枚用意し、その２枚
のプリプレグシートを、端が１０ｍｍの幅で重なるよう
に滑らかな平板上に配置した。その重なり部分に、１０
ｋｇ／ｃｍ2の圧力を印加するとともに２５０℃に加熱
した状態で２０分間おき、重なり部分において接合され
たＦＲＴＰ平板を作製した。重なり部分の幅を２０、３
０、４０、５０、６０そして７０ｍｍとした以外は上記
と同様の方法で、６種類の接合したＦＲＴＰ平板を作製
した。(Test Example 1) The same thickness as 3 m, as in Example 1.
Two FRTP prill leg sheets of m were prepared, and the two prepreg sheets were arranged on a smooth flat plate so that the edges overlap each other with a width of 10 mm. 10 in the overlap
A pressure of kg / cm 2 was applied and the temperature was kept at 250 ° C. for 20 minutes to prepare a FRTP flat plate joined at the overlapping portion. Width of overlapping part is 20, 3
Six kinds of bonded FRTP plates were prepared by the same method as above except that the thickness was 0, 40, 50, 60 and 70 mm.
【００２５】次に、これらの接合したＦＲＴＰ平板を幅
２０ｍｍにし、その曲げ強度を、以下の手順で測定し
た。まず、接合したＦＲＴＰ平板を、接合部が中心位置
になるように、１２０ｍｍの間隔をあけた２点において
３Ｒの曲面で下方から支持する。次に、その中心点に、
５Ｒの曲面を用いて上方から力を印加し、板が破断した
ときの力の値を曲げ強度とする。その結果を、接合部の
重なり部分の幅を横軸に、曲げ強度を縦軸にとってプロ
ットすると図５のようになる。また、比較のため、接合
部を持たないＦＲＴＰ平板についても同様の測定を行っ
たところ、その曲げ強度は４５ｋｇであった。それを図
５に点線で示す。さらに、ゴルフクラブヘッドとして必
要な強度（３０ｋｇ）を一点鎖線で示す。Next, these joined FRTP flat plates were made to have a width of 20 mm, and the bending strength thereof was measured by the following procedure. First, the bonded FRTP flat plate is supported from below by a curved surface of 3R at two points spaced by 120 mm so that the bonded portion is located at the center position. Next, at the center point,
A force is applied from above using a curved surface of 5R, and the value of the force when the plate breaks is defined as the bending strength. The results are plotted in FIG. 5 by plotting the width of the overlapping portion of the bonded portion on the horizontal axis and the bending strength on the vertical axis. Further, for comparison, the same measurement was performed on an FRTP flat plate having no joint, and the bending strength was 45 kg. It is shown by the dotted line in FIG. Further, the strength required for the golf club head (30 kg) is shown by the alternate long and short dash line.
【００２６】これらの結果からも明らかなように、接合
部の重なり部分の幅を約１０ｍｍ以上とすることによ
り、ゴルフクラブヘッドとして必要な、あるいはそれ以
上の曲げ強度が得られることがわかる。As is clear from these results, it is understood that the bending strength required for the golf club head or more can be obtained by setting the width of the overlapping portion of the joints to about 10 mm or more.
【発明の効果】以上述べたように、本発明の繊維強化熱
可塑性樹脂の製造方法は、ゴルフクラブヘッドのような
複雑な形状を有し、なおかつ機械的強度を要求される中
空成形品の製造に際し、繊維強化熱可塑性樹脂からなる
複数の部分材同志を嵌合した状態で成形型内に収め、内
圧を印加しつつ加熱して接合一体化するものである。従
って、本発明の製造方法によれば、連続かつ平滑な外表
面をもつ成形品が得られ、また、各部分材を嵌合して成
形するという簡単な工程で効率よく製造することができ
る。さらに、嵌合した際の各部分材同志の重なり部分の
幅を１０ｍｍ以上とすると、それらを接合して得られた
成形品は、ゴルフクラブヘッドとして必要な強度を有す
る。As described above, the method for producing a fiber-reinforced thermoplastic resin according to the present invention produces a hollow molded article having a complicated shape such as a golf club head and requiring mechanical strength. At this time, a plurality of partial materials made of fiber reinforced thermoplastic resin are housed in a molding die in a fitted state, and are heated and integrated while applying an internal pressure. Therefore, according to the manufacturing method of the present invention, a molded product having a continuous and smooth outer surface can be obtained, and the molded product can be efficiently manufactured by a simple process of fitting and molding each partial material. Furthermore, when the width of the overlapping portion of the respective partial materials when fitted together is 10 mm or more, the molded product obtained by joining them has the strength required for a golf club head.
【図１】 本発明の製造方法の一実施例で、部分材を成
形型内に収容した状態を示す説明図である。FIG. 1 is an explanatory view showing a state in which a partial material is housed in a molding die in an embodiment of the manufacturing method of the present invention.
【図２】 本発明の製造方法の一実施例で、成形後の状
態を示す説明図である。FIG. 2 is an explanatory view showing a state after molding in one embodiment of the manufacturing method of the present invention.
【図３】 本発明の製造方法の一実施例に従って製造し
た成形品の接合部示す断面模式図である。FIG. 3 is a schematic cross-sectional view showing a joint portion of a molded product manufactured according to one embodiment of the manufacturing method of the present invention.
【図４】 本発明の製造方法に用いる部分材の一例を示
す断面模式図である。FIG. 4 is a schematic sectional view showing an example of a partial material used in the manufacturing method of the present invention.
【図５】 部分材同志の重なり部分の幅と曲げ強度との
関係を示すグラフである。図６は、従来の製造方法の部
分材の形状を示す斜視図である。FIG. 5 is a graph showing the relationship between the width of the overlapping portion of the partial materials and the bending strength. FIG. 6 is a perspective view showing a shape of a partial material of a conventional manufacturing method.
【図７】 従来の製造方法の一例で、部分材を成形型内
に収容した状態を示す説明図である。FIG. 7 is an explanatory view showing a state in which a partial material is housed in a molding die in an example of a conventional manufacturing method.
【図８】 従来の製造方法の一例で、部分材の接合部の
例を示す断面模式図である。FIG. 8 is a schematic sectional view showing an example of a joint portion of partial materials in an example of a conventional manufacturing method.
１…フェース側部分材、２…バック側部分材、３…成形
型、４…カバーバルーン、６…重なり部分、1 ... Face side material, 2 ... Back side material, 3 ... Mold, 4 ... Cover balloon, 6 ... Overlap portion,
Claims (1)
分材を接合して中空の成形品を製造する際に、前記複数
の部分材同志を、嵌合した状態で成形型内に収め、内圧
を印加しつつ加熱して接合一体化することを特徴とする
繊維強化熱可塑性樹脂成形品の製造方法1. When manufacturing a hollow molded product by joining a plurality of partial materials made of fiber reinforced thermoplastic resin, the plurality of partial materials are housed in a mold in a fitted state, and internal pressure is applied. For producing a fiber-reinforced thermoplastic resin molded article, characterized by heating and applying bonding to integrate
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5059122A JP2522145B2 (en) | 1993-03-18 | 1993-03-18 | Method for producing fiber-reinforced thermoplastic resin molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5059122A JP2522145B2 (en) | 1993-03-18 | 1993-03-18 | Method for producing fiber-reinforced thermoplastic resin molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06270254A true JPH06270254A (en) | 1994-09-27 |
| JP2522145B2 JP2522145B2 (en) | 1996-08-07 |
Family
ID=13104195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5059122A Expired - Fee Related JP2522145B2 (en) | 1993-03-18 | 1993-03-18 | Method for producing fiber-reinforced thermoplastic resin molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2522145B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1190986A (en) * | 1997-09-25 | 1999-04-06 | Press Kogyo Co Ltd | Method for welding fiber-reinforced resin molding |
| JP2000005940A (en) * | 1998-06-19 | 2000-01-11 | Grace Sewing Machine Kk | Manufacturing device for three-dimensional object with cavity section |
| JP2001018295A (en) * | 1999-07-05 | 2001-01-23 | Mikuni Adec Corp | Method for heat-caulking plastic and structure to which plastic is bonded by heat-caulking |
| JP2005052314A (en) * | 2003-08-01 | 2005-03-03 | Ota Precision Industry Co Ltd | Method of manufacturing golf club head |
| JP2006130065A (en) * | 2004-11-05 | 2006-05-25 | Bridgestone Sports Co Ltd | Golf club head |
| JP2008183436A (en) * | 2008-04-28 | 2008-08-14 | Mitsubishi Rayon Co Ltd | Manufacturing method of golf club head |
| JP2015188755A (en) * | 2014-03-27 | 2015-11-02 | 復盛應用科技股▲分▼有限公司 | Method for manufacturing cup-shaped face plate of golf wood-head |
| JP2020006157A (en) * | 2018-06-21 | 2020-01-16 | 大田精密工業股▲ふん▼有限公司 | Golf club head formed of composite material and production method thereof |
| CN113134221A (en) * | 2020-01-20 | 2021-07-20 | 明安国际企业股份有限公司 | Golf club head with carbon fiber plate and manufacturing method thereof |
| JP2021121256A (en) * | 2020-01-31 | 2021-08-26 | 大田精密工業股▲ふん▼有限公司 | Composite material golf club head and manufacturing method of the same |
-
1993
- 1993-03-18 JP JP5059122A patent/JP2522145B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1190986A (en) * | 1997-09-25 | 1999-04-06 | Press Kogyo Co Ltd | Method for welding fiber-reinforced resin molding |
| JP2000005940A (en) * | 1998-06-19 | 2000-01-11 | Grace Sewing Machine Kk | Manufacturing device for three-dimensional object with cavity section |
| JP2001018295A (en) * | 1999-07-05 | 2001-01-23 | Mikuni Adec Corp | Method for heat-caulking plastic and structure to which plastic is bonded by heat-caulking |
| JP2005052314A (en) * | 2003-08-01 | 2005-03-03 | Ota Precision Industry Co Ltd | Method of manufacturing golf club head |
| JP2006130065A (en) * | 2004-11-05 | 2006-05-25 | Bridgestone Sports Co Ltd | Golf club head |
| JP2008183436A (en) * | 2008-04-28 | 2008-08-14 | Mitsubishi Rayon Co Ltd | Manufacturing method of golf club head |
| JP2015188755A (en) * | 2014-03-27 | 2015-11-02 | 復盛應用科技股▲分▼有限公司 | Method for manufacturing cup-shaped face plate of golf wood-head |
| JP2020006157A (en) * | 2018-06-21 | 2020-01-16 | 大田精密工業股▲ふん▼有限公司 | Golf club head formed of composite material and production method thereof |
| CN113134221A (en) * | 2020-01-20 | 2021-07-20 | 明安国际企业股份有限公司 | Golf club head with carbon fiber plate and manufacturing method thereof |
| JP2021121256A (en) * | 2020-01-31 | 2021-08-26 | 大田精密工業股▲ふん▼有限公司 | Composite material golf club head and manufacturing method of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2522145B2 (en) | 1996-08-07 |
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