KR910000909B1 - Process for the production of f.r.p. articles - Google Patents

Abstract

A method used for forming a FRP golf club head comprises a process of inserting a first pin (4), which is for making a neck hole, into a mixture of bubble type fillers and epoxy resin, a process of producing a core body (1) in molds (5,5'), a process of covering glass fiber (2) and carbon fiber (3) over the core body (1) with a second pin (4') inserted into the hole made from the first pin, and a process of heating and pressing molds (7,7',7") with a sole plate (6) fixed at the mold (7). The method provides enhanced repulsive force of the golf club head.

Description

Integral molding method of F, R, P golf club head

1a, b, and c are process diagrams of the present invention.

Figure 2 is a perspective view of the finished product molded by the present invention.

* Explanation of symbols for main parts of the drawings

1 Core 2 Glass Fiber

3: carbon fiber 4,4 ': pin

5,5 ': mold 6: base plate

67,7 ', 7 ": Mold 8: Handle hole

The present invention relates to a method for integrally forming an F, R, or P golf club head, and a feature of the present invention is that the handle is made of a material containing a light-weighted and strong BOBBLE filler and an epoxy resin as a core. NECK HOLE and SOLE PLATE can be molded together by a mold.

Conventionally, the core is made of foamed synthetic resin and its surface is coated with glass fiber cloth, glass fiber cloth, carbon fiber cloth, carbon fiber cloth, and so on. The head is known, but since the golf club head is made of a complex curved body, it is not only difficult to manufacture, but also the F, R, and P made of the head body are short fibers made by joining or overlapping small glass fibers. Because it is made of glass fiber, the repulsive force is lowered at the time of hitting, and the reinforcing effect by the fiber is not sufficient, and the thickness of the outer layer is thickened, so it is difficult to avoid excessive weight and the core is made of foam synthetic resin with good shock absorption. There was a defect that the repulsive force is worse due to the good shock absorption effect during the strike.

)상의 유리초프(CHOP)와 10μ정도의 유리 또는 세라믹의 구형미 분말과 혼합물로써 외피를 형성하고 헤드본체 중앙부에 상온경화성의 경질포리우레탄에 10μ정도의 유리 또는 세라믹의 구형미분말을 가한 혼합물(12)을 전기 중공부내에 충진하고 발포경화시킨 것을 특징으로 하는 골프크럽헤드의 제조법이 일본특개소 49-20270호로 공지되어 있으나, 이의 결점은 1차로 내부에 중공부가 형성되게 외피를 형성한 후 중공부내에 혼합물을 채우게 되므로 중공부에 채워진 혼합물이 밀실하지 못하게 되므로 골프헤드로서의 제기능이 양호히 발휘되지 못하게 됨은 물론 중공부내에 혼합물을 주입하는 주입구멍은 웨이트로 밀폐시킨 후 솔프레이트(SOLE PLATE)를 고정시켜야 하게 되므로 견고성이 취약한 결점이 있었다.To solve the above drawbacks, the handle is formed on the bottom part of the golf club head, which is structured to attach the base plate (3) to the bottom surface, and the handle forming jig is detachable. Yarn cut into short length of about 10m / m using epoxy resin of room temperature hardening by using hole type in the center of the head body of the head type of the bottom type, and inserting the front end into the electric type.

A mixture of glass chopped (CHOP) phase and spherical fine powder of glass or ceramic of about 10μ and a shell formed therein, and a mixture of spherical fine powder of glass or ceramic of about 10μ in a hard polyurethane of room temperature hardening (12) ) Is a method of manufacturing a golf club head, characterized in that it is filled with an electric hollow and foamed hardening is known as Japanese Patent Laid-Open No. 49-20270, but its drawback is that after forming the outer shell to form a hollow inside the first hollow inside Since the mixture is filled in the hollow part, the mixture filled in the hollow part is not closed so that the function as a golf head cannot be performed well, and the injection hole for injecting the mixture into the hollow part is sealed with weight and the sole plate is fixed. There was a weakness of weakness because it had to be.

The present invention is to solve the above defects by mixing the core body of the head body with a light weight, strength and elasticity of the BOBLE filler and resin to form the core body by the mold and at the same time to form a handle fitting hole. .

Insert a pin of the size of the handle fitting hole of the model to be molded into the handle fitting hole of the molded core, and coat the surface of the core with carbon fiber to improve elasticity. Inventing the integral molding method of the F, R, P golf crumb head by hot pressing by inserting the mold into the fixed mold is described in detail according to the accompanying drawings of the present invention.

Mold (5) (5 ') as shown in 1a by inserting the primary forming pin (4) into the handle fitting hole by molding a core body with a material containing a light specific gravity and a strong BOBBLE filler and epoxy resin. The core (1), which has been put into a hot press, is removed from the mold (5) (5 '), and the pin (4) is pulled out and removed, and then the handle fitting hole secondary forming pin is formed in the hole of the primary forming pin (4). (4 ') is sandwiched and the surface of the core 1 is coated with a long fiber glass 2, and then the surface of the glass fiber 2 is coated with a carbon fiber 3 having good moldability and excellent elasticity. However, the striking part is thickly coated and detached by removing the pin 4 'by hot pressing by the mold 7 and the molds 7' and 7 "which fix the bottom plate 6 as shown in FIG. 1C. 8) is formed and the base 6 gets the crop head of the finished product.

In the present invention as described above, the core 1 of the head is made of a light-weighted and strong BOBBLE filler, and the surface of the core 1 is coated with glass fiber or carbon fiber to further improve the repulsive force of the batting ball. As well as the effect is exhibited, since the handle fitting hole 8 and the base plate 6 are integrally molded, there is an effect of doubling the productivity and economy compared to the conventional.

Claims (1)

In a known golf club head made of a synthetic resin having a handle fitting hole (8) and a bottom plate (2) attached thereto, the handle fitting hole primary forming pin (4) is inserted into a mixture of a bobble filler and an epoxy resin to form a mold. (5) (5 '), the core 1 is molded, and the handle fitting hole secondary forming pin 4' is inserted into the hole formed by the primary forming pin 4, and the core 1 is formed on the surface of the core 1; F, characterized in that the fibrous glass fiber (2) and the carbon fiber (3) are sequentially coated and then integrally formed by the mold (7) and the mold (7 ') (7 ") on which the base plate (6) is placed. , R, P golf club head integral molding method.

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