JPH09201434A - Manufacture of golf club shaft - Google Patents
Manufacture of golf club shaftInfo
- Publication number
- JPH09201434A JPH09201434A JP8032816A JP3281696A JPH09201434A JP H09201434 A JPH09201434 A JP H09201434A JP 8032816 A JP8032816 A JP 8032816A JP 3281696 A JP3281696 A JP 3281696A JP H09201434 A JPH09201434 A JP H09201434A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- reinforced composite
- composite resin
- resin sheet
- sheet body
- 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
Landscapes
- Golf Clubs (AREA)
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複数の繊維強化複
合樹脂層からなるゴルフクラブシャフトの製造方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a golf club shaft including a plurality of fiber reinforced composite resin layers.
【０００２】[0002]
【従来の技術】複数の繊維強化複合樹脂層からなるゴル
フクラブシャフトを製造する場合、一定の強度を有した
まま軽量化を図るため、一般には、繊維含有率が70％以
上である低樹脂含有率の繊維強化複合樹脂シート体を使
用する。2. Description of the Related Art When manufacturing a golf club shaft composed of a plurality of fiber-reinforced composite resin layers, in order to reduce the weight of the golf club shaft while maintaining a certain level of strength, generally, a low resin content of 70% or more is included. The rate of fiber reinforced composite resin sheet body is used.
【０００３】[0003]
【発明が解決しようとする課題】従って、上述の従来の
製造方法では、繊維強化複合樹脂シート体（いわゆるプ
リプレグシート）は樹脂含有率が低いため粘着力が小さ
く、このプリプレグシートを重ね合わせて巻き付ける際
に各シートの接合力が弱く、作業性に劣るものであっ
た。Therefore, in the above-mentioned conventional manufacturing method, the fiber-reinforced composite resin sheet body (so-called prepreg sheet) has a low resin content and thus has a low adhesive force, and the prepreg sheets are superposed and wound. At that time, the joining force of each sheet was weak and the workability was poor.
【０００４】なお、従来において、補強繊維の配向角が
異なる層群の間に接着剤層を介して、両層群間に生じる
座屈破壊を防止することを目的としたもの、有機系重合
体からなるフィルム層を一体的に形成して耐衝撃性、曲
げ強度、捻り強度の向上を目的としたもの等があるが、
いずれの場合においても強度の向上のみを目的としたも
のであり、強度の向上が可能であっても新たな工程が必
要であったり、成形性が悪くなる等の作業上の問題があ
った。Conventionally, the purpose is to prevent buckling failure between the two layer groups by interposing an adhesive layer between the layer groups having different orientation angles of the reinforcing fibers, an organic polymer. There is one that aims to improve impact resistance, bending strength, and twist strength by integrally forming a film layer consisting of
In either case, the purpose is only to improve the strength. Even if the strength can be improved, there is a problem in work such that a new process is required and moldability is deteriorated.
【０００５】そこで、本発明では、製造時の作業性を向
上させると共に、つぶれ強度、曲げ強度、耐衝撃強度、
捻り強度等のゴルフクラブシャフトに必要な強度を補う
ことが可能となるゴルフクラブシャフトの製造方法を提
供することを目的とする。Therefore, in the present invention, workability during manufacturing is improved, and crush strength, bending strength, impact resistance,
It is an object of the present invention to provide a method for manufacturing a golf club shaft which can supplement the strength required for the golf club shaft such as the torsional strength.
【０００６】[0006]
【課題を解決するための手段】上述の目的を達成するた
めに、本発明に係るゴルフクラブシャフトの製造方法
は、幅寸法が基端から先端に向って順次小となる複数の
繊維強化複合樹脂シート体を成形用芯金に巻回積層した
後、加熱して硬化させるゴルフクラブシャフトの製造方
法であって、繊維含有率が70％以上の２枚の繊維強化複
合樹脂シート体間に、該２枚の繊維強化複合樹脂シート
体より薄くかつ繊維含有率が70％未満の繊維強化複合樹
脂シート体を挾んで、成形用芯金に巻き付けるものであ
る。また、繊維含有率が50〜63％の繊維強化複合樹脂シ
ート体を挾んでも良い。In order to achieve the above-mentioned object, a method for manufacturing a golf club shaft according to the present invention comprises a plurality of fiber-reinforced composite resins whose widths are successively reduced from the base end to the tip. A method for producing a golf club shaft, comprising winding and laminating a sheet body around a molding core bar, followed by heating and curing, wherein a fiber content is 70% or more between two fiber-reinforced composite resin sheet bodies. A fiber-reinforced composite resin sheet body, which is thinner than two fiber-reinforced composite resin sheet bodies and has a fiber content of less than 70%, is sandwiched and wound around a molding core bar. Further, a fiber-reinforced composite resin sheet body having a fiber content of 50 to 63% may be sandwiched.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて詳説する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【０００８】図３は本発明に係るゴルフクラブシャフト
の製造方法に使用する繊維強化複合樹脂シート体１…を
示し、この場合、繊維強化複合樹脂シート体１は、その
幅寸法が基端から先端に向って順次小となり、ａ，ｂ，
ｃ，ｄ，ｅの５種類が使用される。ここで、繊維強化複
合樹脂シート体１とは、炭素繊維やガラス繊維等の強化
繊維（補強繊維）を夫々の方向に配列して、エポキシ樹
脂等の熱硬化性樹脂を含浸させたものでる。FIG. 3 shows a fiber-reinforced composite resin sheet body 1 ... Used in the method for manufacturing a golf club shaft according to the present invention. In this case, the width dimension of the fiber-reinforced composite resin sheet body 1 is from the base end to the tip. Gradually decreases toward a, b,
Five types of c, d, and e are used. Here, the fiber-reinforced composite resin sheet body 1 is obtained by arranging reinforcing fibers (reinforcing fibers) such as carbon fibers and glass fibers in their respective directions and impregnating them with a thermosetting resin such as an epoxy resin.
【０００９】ａ，ｂの繊維強化複合樹脂シート体１，１
は繊維含有率が70％以上、具体的には、76％のカーボン
繊維プリプレグ（例えば、Ｍ４０Ｊ：東レ株式会社製）
等が使用され、ｃの繊維強化複合樹脂シート体１は繊維
含有率が70％未満、具体的には、57％のカーボン繊維プ
リプレグ（例えば、Ｔ３００：東レ株式会社製）等が使
用され、ｄ，ｅの繊維強化複合樹脂シート体１は繊維含
有率が70％以上、具体的には、70％のカーボン繊維プリ
プレグ（例えば、Ｔ８００：東レ株式会社製）等が使用
される。Fiber-reinforced composite resin sheet bodies a and b 1, 1
Is a carbon fiber prepreg having a fiber content of 70% or more, specifically 76% (for example, M40J: manufactured by Toray Industries, Inc.)
Etc. are used, and the fiber-reinforced composite resin sheet body 1 of c has a fiber content of less than 70%, specifically 57% of carbon fiber prepreg (for example, T300: manufactured by Toray Industries, Inc.) and the like, d , E, the fiber-reinforced composite resin sheet body 1 has a fiber content of 70% or more, specifically 70% carbon fiber prepreg (for example, T800: manufactured by Toray Industries, Inc.).
【００１０】また、ｃの繊維強化複合樹脂シート体１の
厚さ寸法はａ，ｂの繊維強化複合樹脂シート体１，１の
厚さ寸法より小さく設定され、例えば、ａ，ｂ，ｄ，ｅ
の繊維強化複合樹脂シート体１の厚さ寸法は、例えば、
0.10〜0.15mmとし、ｃの繊維強化複合樹脂シート体１の
厚さ寸法は、例えば、0.01〜0.08mmとする。さらに、各
繊維強化複合樹脂シート体１…の長さ寸法Ｌを例えば12
00mm程度とした場合において、ａ，ｂの先端幅寸法Ａ
1 ，Ｂ1 を50〜60mmとし、ａ，ｂの基端幅寸法Ａ2 ，Ｂ
2 を110 〜120mm とし、ｃ，ｄ，ｅの先端幅寸法Ｃ1 ，
Ｄ1 ，Ｅ1 を35〜45mmとし、ｃ，ｄ，ｅの基端幅寸法Ｃ
2 ，Ｄ2 ，Ｅ2 を95〜105mm としている。The thickness dimension of the fiber-reinforced composite resin sheet body 1 of c is set smaller than the thickness dimension of the fiber-reinforced composite resin sheet bodies 1 and 1 of a and b, for example, a, b, d and e.
The thickness dimension of the fiber-reinforced composite resin sheet body 1 is, for example,
0.10 to 0.15 mm, and the thickness dimension of the fiber-reinforced composite resin sheet body 1 of c is, for example, 0.01 to 0.08 mm. Further, the length dimension L of each fiber reinforced composite resin sheet 1 ...
Width A of the tip of a and b when it is set to about 00 mm
1 and B 1 are 50 to 60 mm, and a and b are the base width dimensions A 2 and B
2 is 110 to 120 mm, the tip width dimension C 1 , d, e of C 1 ,
D 1 and E 1 are 35 to 45 mm, and the base end width dimension C of c, d and e
2 , D 2 and E 2 are 95 to 105 mm.
【００１１】そして、強化繊維の方向Ｈは、長手方向に
対してａ，ｂでは傾斜状に、ｃ，ｄ，ｅでは略平行状に
設定されている。具体的には、ａ，ｂでは、一辺２を０
°とした場合に、ａでは−135 °程度に傾斜し、ｂで
は、−45°程度に傾斜している。ところで、強化繊維の
方向Ｈが傾斜するに従ってゴルフクラブシャフトの捻り
剛性が大きくなるように作用し、略平行に近づくほど曲
げ剛性が大きくなるように作用し、略垂直に近づくほど
つぶし強度が大きくなるように作用する。従って、この
ａ，ｂの繊維強化複合樹脂シート体１，１のような傾斜
角度近傍にて捻り剛性が最大となる。The direction H of the reinforcing fiber is set to be inclined with respect to the longitudinal direction in a and b, and substantially parallel to c, d and e. Specifically, in a and b, one side 2 is 0
In the case of °, the angle a is about −135 °, and the angle b is about −45 °. By the way, as the direction H of the reinforcing fibers inclines, the torsional rigidity of the golf club shaft increases, the bending rigidity increases as it approaches substantially parallel, and the crushing strength increases as it approaches substantially vertical. Acts like. Therefore, the torsional rigidity becomes maximum in the vicinity of the inclination angle as in the fiber-reinforced composite resin sheet bodies 1 and 1 of a and b.
【００１２】しかして、上述の如く構成された５枚の繊
維強化複合樹脂シート体１…を図２に示すような成形用
芯金３（この成形用芯金３は基端から先端に向かって順
次縮径する）に、巻き付ける。この場合、図１に示すよ
うに、ａ，ｃ，ｂの順で所定長さだけ────例えば各
々1/4 周程度ずつ────ずらして張り合わせて、つま
り、ｃの繊維強化複合樹脂シート体１をａ，ｂの繊維強
化複合樹脂シート体１で挾んだ状態でもって巻着する。Thus, the five fiber-reinforced composite resin sheet bodies 1 ... As constructed above are molded into a molding core metal 3 as shown in FIG. 2 (this molding core metal 3 is directed from the base end to the front end). (The diameter is gradually reduced). In this case, as shown in FIG. 1, a, c, and b are laminated by a predetermined length in the order of a predetermined length, for example, about 1/4 of each, and are bonded together, that is, the fiber-reinforced composite of c. The resin sheet body 1 is wrapped with the fiber-reinforced composite resin sheet body 1 of a and b sandwiched therebetween.
【００１３】次に、この上からｄの繊維強化複合樹脂シ
ート体１を巻着し、さらにその上からｅの繊維強化複合
樹脂シート体１を巻着して、ａ，ｂ，ｃ，ｄの繊維強化
複合樹脂シート体１…からなる筒状体を形成する。その
後は、この筒状体を加熱して熱硬化性樹脂を硬化させた
後、芯金３を引き抜いて、その硬化した筒状体の外周面
を研磨加工すれば、ゴルフクラブシャフトを形成するこ
とができる。この場合、ｃの繊維強化複合樹脂シート体
１は繊維含有率が70％未満であるので、ａ，ｂの繊維強
化複合樹脂シート体１，１の接合性が向上し、安定し
て、ａ，ｂ，ｃの繊維強化複合樹脂シート体１が接合す
る。つまり、製造作業性が向上する。Next, the fiber-reinforced composite resin sheet body 1 of d is wound from above, and the fiber-reinforced composite resin sheet body 1 of e is further wound from above to form a, b, c and d. A tubular body composed of the fiber-reinforced composite resin sheet body 1 is formed. After that, after heating the tubular body to cure the thermosetting resin, the core metal 3 is pulled out, and the outer peripheral surface of the cured tubular body is polished to form a golf club shaft. You can In this case, since the fiber content of the fiber-reinforced composite resin sheet body 1 of c is less than 70%, the bondability of the fiber-reinforced composite resin sheet bodies 1 and 1 of a and b is improved, and stable a, The fiber-reinforced composite resin sheet bodies 1 of b and c are joined. That is, the manufacturing workability is improved.
【００１４】また、ａ，ｂの繊維強化複合樹脂シート体
１，１間に介装されるｃの（繊維含有率が70％未満の）
繊維強化複合樹脂シート体１としては、図４や図５や図
６で示されるものであってもよい。即ち、図４に示すも
のでは、強化繊維の配列方向Ｈを長手方向に対して略垂
直に設定することにより、製造作業性を向上させると共
に、形成されたシャフトのつぶれ強度の補強を可能とし
ている。図５に示すものでは、ガラス繊維プリプレグ、
例えばＴＧＦＵＤＰＰ（新日鉄化学株式会社製）を用い
ることにより、衝撃強度の補強を可能とした。図６に示
すものでは、炭素繊維が格子状に編み込まれたいわゆる
クロスプリプレグシートであり、シャフト長手方向に対
して傾斜状になるように設定することにより捻り剛性の
補強をそれぞれ可能としている。In addition, c (having a fiber content of less than 70%) interposed between the a and b fiber-reinforced composite resin sheet bodies 1, 1
The fiber-reinforced composite resin sheet body 1 may be the one shown in FIG. 4, FIG. 5, or FIG. That is, in the structure shown in FIG. 4, the arranging direction H of the reinforcing fibers is set substantially perpendicular to the longitudinal direction, so that the manufacturing workability is improved and the crush strength of the formed shaft can be reinforced. . In the case shown in FIG. 5, the glass fiber prepreg,
For example, by using TGFUDPP (manufactured by Nippon Steel Chemical Co., Ltd.), the impact strength can be reinforced. In the structure shown in FIG. 6, a so-called cross prepreg sheet in which carbon fibers are woven in a lattice shape is set so as to be inclined with respect to the longitudinal direction of the shaft, whereby the torsional rigidity can be reinforced.
【００１５】ところで、ｃの繊維強化複合樹脂シート体
１としては、繊維含有率を70％未満としているが、特に
50〜63％とするのが好ましい。つまり、繊維含有率が低
ければ低いほど樹脂含有率が高くなって粘着力が大とな
るが、繊維含有率が低いことにより、形成されるシャフ
トの強度が劣ることになる。これに対して、繊維含有率
を50〜63％とすれば、粘着力も大きくかつ強度的にも優
れたシャフトを提供することができる。また、ｃ以外の
繊維強化複合樹脂シート体１としては、繊維含有率を70
％以上としているが、85％以下とするのが好ましい。即
ち、繊維含有率が85％を越えれば、樹脂含有率が少なく
なり、シート体に形成することが困難だからである。By the way, the fiber-reinforced composite resin sheet body 1 of c has a fiber content of less than 70%.
It is preferably 50 to 63%. That is, the lower the fiber content rate, the higher the resin content rate and the greater the adhesive force, but the lower fiber content rate results in poor strength of the formed shaft. On the other hand, if the fiber content is 50 to 63%, it is possible to provide a shaft having a large adhesive force and excellent strength. Further, as the fiber-reinforced composite resin sheet body 1 other than c, the fiber content is 70
% Or more, but preferably 85% or less. That is, when the fiber content exceeds 85%, the resin content decreases and it is difficult to form a sheet.
【００１６】なお、本発明は上述の実施の形態に限定さ
れず、例えば、巻設される繊維強化複合樹脂シート体１
の数の増減は自由であり、ａの繊維強化複合樹脂シート
体１の強化繊維の配列方向Ｈを−45°程度とし、ｂの繊
維強化複合樹脂シート体１の強化繊維の配列方向Ｈを−
135 °程度としてもよい。The present invention is not limited to the above-mentioned embodiment, and for example, the wound fiber-reinforced composite resin sheet body 1 is used.
The arrangement direction H of the reinforcing fibers of the fiber-reinforced composite resin sheet body 1 of a is about −45 °, and the arrangement direction H of the reinforcing fibers of the fiber-reinforced composite resin sheet body 1 of b is −
It may be around 135 °.
【００１７】[0017]
【発明の効果】本発明は上述の如く構成されているの
で、次に記載する効果を奏する。Since the present invention is configured as described above, the following effects can be obtained.
【００１８】 各繊維強化複合樹脂シート体１…の接
合性が向上し、製造作業性の向上を図ることができる。 挾み込む繊維強化複合樹脂シート体１の特性によっ
てゴルフクラブシャフトとして必要な強度を補うことが
できる。つまり、挾み込む繊維強化複合樹脂シート体１
の補強繊維やその配列方向を変化させることにより、つ
ぶれ強度、曲げ強度、耐衝撃強度、捻り強度の補強効果
を持たせることが可能となる。The bondability of each fiber-reinforced composite resin sheet 1 ... Is improved, and the workability of manufacturing can be improved. The strength required for the golf club shaft can be supplemented by the characteristics of the fiber-reinforced composite resin sheet body 1 that is sandwiched. That is, the fiber-reinforced composite resin sheet body 1 that is sandwiched
By changing the reinforcing fiber and the arrangement direction thereof, it is possible to provide the reinforcing effect of the crushing strength, the bending strength, the impact strength, and the torsion strength.
【図１】本発明に係るゴルフクラブシャフトの製法を示
す簡略断面図である。FIG. 1 is a simplified cross-sectional view showing a method for manufacturing a golf club shaft according to the present invention.
【図２】成形用芯金の側面図である。FIG. 2 is a side view of a molding core bar.
【図３】繊維強化複合樹脂シート体の平面図である。FIG. 3 is a plan view of a fiber-reinforced composite resin sheet body.
【図４】繊維強化複合樹脂シート体の変形例を示す平面
図である。FIG. 4 is a plan view showing a modified example of the fiber-reinforced composite resin sheet body.
【図５】繊維強化複合樹脂シート体の他の変形例を示す
平面図である。FIG. 5 is a plan view showing another modification of the fiber-reinforced composite resin sheet body.
【図６】繊維強化複合樹脂シート体の別の変形例を示す
平面図である。FIG. 6 is a plan view showing another modification of the fiber-reinforced composite resin sheet body.
１ 繊維強化複合樹脂シート体 ３ 成形用芯金 1 Fiber-reinforced composite resin sheet 3 Core metal for molding
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【手続補正書】[Procedure amendment]
【提出日】平成８年２月２２日[Submission date] February 22, 1996
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１３】次に、この上からｄの繊維強化複合樹脂シ
ート体１を巻着し、さらにその上からｅの繊維強化複合
樹脂シート体１を巻着して、ａ，ｂ，ｃ，ｄ，ｅの繊維
強化複合樹脂シート体１…からなる筒状体を形成する。
その後は、この筒状体を加熱して熱硬化性樹脂を硬化さ
せた後、芯金３を引き抜いて、その硬化した筒状体の外
周面を研磨加工すれば、ゴルフクラブシャフトを形成す
ることができる。この場合、ｃの繊維強化複合樹脂シー
ト体１は繊維含有率が７０％未満であるので、ａ，ｂの
繊維強化複合樹脂シート体１，１の接合性が向上し、安
定して、ａ，ｂ，ｃの繊維強化複合樹脂シート体１が接
合する。つまり、製造作業性が向上する。Next, the fiber-reinforced composite resin sheet body 1 of d is wound from above, and the fiber-reinforced composite resin sheet body 1 of e is further wound from above to form a, b, c, d , A tubular body composed of the fiber-reinforced composite resin sheet body 1 of e is formed.
After that, after heating the tubular body to cure the thermosetting resin, the core metal 3 is pulled out, and the outer peripheral surface of the cured tubular body is polished to form a golf club shaft. You can In this case, since the fiber content of the fiber-reinforced composite resin sheet body 1 of c is less than 70%, the bondability of the fiber-reinforced composite resin sheet bodies 1 and 1 of a and b is improved, and stable a, The fiber-reinforced composite resin sheet bodies 1 of b and c are joined. That is, the manufacturing workability is improved.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｂ２９Ｌ 31:52 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location // B29L 31:52
Claims (2)
なる複数の繊維強化複合樹脂シート体１…を成形用芯金
３に巻回積層した後、加熱して硬化させるゴルフクラブ
シャフトの製造方法であって、繊維含有率が70％以上の
２枚の繊維強化複合樹脂シート体１，１間に、該２枚の
繊維強化複合樹脂シート体１，１より薄くかつ繊維含有
率が70％未満の繊維強化複合樹脂シート体１を挾んで、
成形用芯金３に巻き付けることを特徴とするゴルフクラ
ブシャフトの製造方法。1. A golf club shaft in which a plurality of fiber-reinforced composite resin sheet bodies 1 whose widths are successively reduced from the base end to the tip end are wound and laminated on a molding core metal 3 and then heated and cured. Of the fiber-reinforced composite resin sheet body 1, 1 having a fiber content of 70% or more, the fiber-containing composite resin sheet body 1 is thinner than the two fiber-reinforced composite resin sheet bodies 1, 1 and has a fiber content rate of more than 70%. By sandwiching less than 70% of the fiber-reinforced composite resin sheet body 1,
A method of manufacturing a golf club shaft, which comprises winding the core metal 3 for molding.
脂シート体１を挾む請求項１記載のゴルフクラブシャフ
トの製造方法。2. The method for manufacturing a golf club shaft according to claim 1, wherein the fiber-reinforced composite resin sheet body 1 having a fiber content of 50 to 63% is sandwiched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8032816A JP3053567B2 (en) | 1996-01-26 | 1996-01-26 | Golf club shaft manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8032816A JP3053567B2 (en) | 1996-01-26 | 1996-01-26 | Golf club shaft manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09201434A true JPH09201434A (en) | 1997-08-05 |
| JP3053567B2 JP3053567B2 (en) | 2000-06-19 |
Family
ID=12369367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8032816A Expired - Lifetime JP3053567B2 (en) | 1996-01-26 | 1996-01-26 | Golf club shaft manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3053567B2 (en) |
-
1996
- 1996-01-26 JP JP8032816A patent/JP3053567B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3053567B2 (en) | 2000-06-19 |
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