JPH08139B2 - Wood golf club head manufacturing method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a wood golf club head, and more particularly, to a face surface of a wood golf club head made of a fiber reinforced plastic material. The present invention relates to a method for manufacturing a wood golf club head in which a plurality of score lines and a plurality of dimples are easily formed by recessing some of the fibers and resin without cutting the fibers during molding. .

[Prior art]

A conventional wood golf club head 1 made of fiber reinforced plastic has a plurality of score lines 3 and vertical lines 4 formed on a face 2 as shown in FIG. As a manufacturing method, as shown in FIGS. 5 and 6, the molds 6a and 6b (FIG. 5) are divided into two parts having vertical parting lines 5, and the parting line 7 is provided horizontally. The other two dies 8a and 8b (Fig. 6) are generally used.

Further, the face surface 2 is formed by a curved surface having a constant curvature centering on a point on the center line AA, and the grooves 3a of the plurality of score lines 3 are always face surfaces 2 as shown in FIG. Since it is not formed at a right angle to, but is formed in parallel in a certain direction, when molded with the above-mentioned split molds 6a, 6b and 8a, 8b,
Since it cannot be removed from the mold, the processing of the score line 3 on the face surface 2 is performed by using the molds 6a, 6b and 8a, 8b as described above.
It is common to perform groove processing after molding and polishing with.

However, in the case of a wood golf club head made of fiber reinforced plastic in which the score surface 3 is grooved on the face surface after molding of the club head, the face surface is likely to be cross-cut, resulting in delamination, and durability. A problem arises.

Moreover, since the grooves 3a of the plurality of score lines 3 as shown in FIG. 7 are bored at right angles to the vertical surface, the mold halves 6a and 6b can be demolded. There is a problem in that the structure of the club head is restricted and the face pattern is easily broken when the mold is released from the mold. Further, in the molds 8a and 8b as shown in FIG. 6, it was difficult to remove the mold, and it was practically impossible to process the score line during molding.

[Object of the Invention]

The present invention has been devised in view of such conventional problems, and various score lines and dimples having various patterns according to the required characteristics of the club are formed on the face surface of the club head when the club head is formed. It is possible to simultaneously form a plurality of score lines and a plurality of dimples by denting a part of the fibers and the resin without cutting the fibers forming the, and easily removing the mold after molding. The present invention provides a method for manufacturing a wood golf club head which can be formed and can be easily formed.

[Structure of Invention]

In order to achieve the above-mentioned object, the present invention, when molding a wood golf club made of a fiber reinforced plastic material,
The gist of the present invention is to simultaneously form a plurality of score lines and a plurality of dimples by denting a part of the fibers and the resin without cutting the fibers forming the face surface.

[Operation of the invention]

The present invention is configured as described above, and when the club head is molded, the fibers forming the face surface are not cut, but a part of the fibers and the resin are dented, and score lines having various patterns according to the required characteristics of the club. Fibers (cloth) on the face surface by forming dimples and dimples on the face surface
The durability of the club head can be improved without causing breakage or delamination.

Also, compared to the conventional wood golf club head with only the score line, the back spin amount can be reduced to increase the flight distance, and the golfer can easily grasp the sweet area. is there.

Further, according to the present invention, a plurality of score lines or a plurality of dimples, or a placement piece mold having a plurality of score lines and a plurality of dimples is provided at a place where a lower mold club head face is formed. Then, a fiber reinforced plastic material is placed inside the lower mold and the upper mold to form a club head by compression molding, and at the time of mold release, after removing the upper mold, the club head and the placement piece mold are separated. By removing the lower mold from the lower mold at the same time, and by removing the placement piece mold from the face surface of the club head to mold the wood golf club head, various patterns of score lines and dimples according to the required characteristics of the club When the head is molded, the fibers forming the face surface can be cut at the same time by cutting a part of the fiber and resin without cutting, and the mold can be easily removed after molding. It is intended that can to facilitate the factory.

Example of Invention

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view of a wood golf club head 10 made of fiber reinforced plastic manufactured by the manufacturing method of the present invention. The face surface 11 of the club head has various patterns according to the required characteristics of the club. A plurality of parallel score lines 12 and a plurality of dimples 13 are formed.

As for the dimples 13, one score line 12 is divided into three or four and the dimples 13 are arranged between them to form a fixed pattern. The area where the dimples 13 are formed generally displays the suit area of the club head,
The golf player can easily grasp the club head's suit area when hitting a ball.

The function of the score line 12 formed on the face surface 1 is to increase the frictional force against the ball at the time of hitting the ball to give backspin (cut effect) and to drain water such as moisture adhering to the face surface 11. The score line 12 is thicker, and the greater the score line 12, the greater the amount of backspin and the greater the drainage effect, but the shorter the flight distance.

However, since it is a club for the purpose of extending the flight distance in a wood golf club or the like, it is preferable to appropriately apply the backspin, and therefore, in the present invention, the score line 12 is partially reduced to replace it. The dimples 13 are formed on the dimples 13, and the dimples 13 are configured so that the golf player can easily recognize the suite area as described above.

Next, a method of manufacturing the wood golf club head 10 made of fiber reinforced plastic according to the present invention will be described with reference to FIGS.

In FIG. 2, 14 is a lower mold, 15 is an upper mold, and a lower mold.
A plurality of score lines or a plurality of dimples (not shown), or a placement piece mold 17 having a plurality of score lines and a plurality of dimples, is provided at a position where the club head face portion 16 of 14 is formed. Further, at the bottom of the lower mold 14, a push-up pin insertion hole 18 (not shown) used for pushing up the molded club head 10 and the placement piece mold 17 is provided.
a, 18b are formed.

At the time of molding the club head 10, a placing piece mold 17 is arranged on the club head face portion 16 of the lower mold 14, and a fiber reinforced plastic material (not shown) is provided inside the lower mold 14 and the upper mold 15. ) Are placed and compression molded to form the club head 10.

That is, at the time of molding the club head, a placing piece mold 17 having a score line and dimple pattern is arranged, and a fiber reinforced plastic material (not shown) is arranged inside the lower mold 14 and the upper mold 15. By compression molding, the fibers forming the face surface 11 are not cut, and some of the fibers and resin are dented, and score lines 12 and dimples 13 having various patterns according to the required characteristics of the club are slab heads.
It can be formed at the same time as 10 moldings.

When the mold is released, the club head 10 and the placement piece mold 17 are inserted into the insertion holes 18a, 18 formed in the lower mold 14 after the upper mold 15 is separated.
Insert the push-up pin from b and insert the club head 10
The upper and lower molds are simultaneously released from the lower mold 14, and the placing piece mold 17 is removed from the face portion 16 of the club head 10 to mold the wood golf club head 10 as shown in FIG.

By molding the club head 10 by the method as described above, collapse of the face pattern at the time of demolding can be prevented, and the flexibility of designing the arrangement and shape of the score lines 12 and the dimples 13 is great, and the placement piece type It is also possible to easily change the face pattern by replacing only 17.

〔The invention's effect〕

According to the present invention, as described above, the score line and the dimples having various patterns corresponding to the required characteristics of the club are formed on the face surface of the club head at the same time as the molding of the club head. The effect is that the golfer can easily extend the distance, and the golfer can easily grasp the sweet area so that the golfer can swing at ease.

Further, in the present invention, the face surface of the club head is provided with various patterns of score lines and dimples corresponding to the required characteristics of the club without cutting the fibers forming the face surface during molding of the club head. Fiber on the face (cross) as it is recessed and molded at the same time
There is an effect that the durability of the club head can be improved without causing breakage or delamination, and the productivity can be improved by shortening and simplifying the processing process.

Furthermore, a detachable placement piece mold provided with a face pattern is arranged at the place where the lower mold club head face is formed, and the molded product is released from the mold, so there is almost no collapse of the face pattern during mold release. , The face pattern can be easily changed by replacing only the placing piece type, and the fatigue of the face part of the placing piece type can be extended by extending only the placing piece type to extend the life of the die. effective.

[Brief description of drawings]

FIG. 1 is a front view of a wood golf club head made of fiber reinforced plastic manufactured by the manufacturing method of the present invention, FIG. 2 is a sectional view showing a manufacturing mold of the wood golf club head, and FIG. 3 is a club. FIG. 4 is a plan view showing a state in which the placement piece type is arranged on the head, FIG. 4 is a front view of a conventional wood golf club head made of fiber reinforced plastic, and FIG.
FIG. 6 and FIG. 6 are sectional views showing a conventional mold, and FIGS. 7 and 8 are sectional views of score lines formed on a conventional face. 10 …… Wood golf club head, 11 …… Face surface, 12 …… Score line, 13 …… Dimple, 14 …… Lower mold, 15 …… Upper mold, 16 …… Face part, 17 …… Place piece type .

 ─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-51-78442 (JP, A) JP-A-60-190984 (JP, A) JP-A-59-34274 (JP, A) Actual development Sho-60- 6561 (JP, U)

Claims (1)

[Claims] 1. A method of manufacturing a wood golf club head made of a fiber-reinforced plastic material by a lower mold and an upper mold, wherein a plurality of score lines or a plurality of score lines are formed at the places where the lower mold club head face is formed. Arranging individual dimples, or a placement piece mold having a plurality of score lines and a plurality of dimples, and arranging a fiber reinforced plastic material inside the lower mold and the upper mold to perform compression molding. The club head is formed by
After removing the upper mold, the club head and the placing piece mold are simultaneously removed from the lower die, and the placing piece mold is removed from the face surface of the club head to form a wood golf club head. -Method for manufacturing a golf club head.