JPH0530895Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a mold for molding a golf club head, and more specifically, a mold for compression molding an iron club head using fiber-reinforced plastic as the main material. It concerns the improvement of molds.

[Prior art]

Conventionally, a mold for compression molding an iron club head using fiber-reinforced plastic as its main material has generally been compression molded using an upper outer mold and a lower outer mold.

However, there was a problem in that the accuracy of the alignment of the upper and lower molds was poor, resulting in damage to the mold, and the heavy weight of the mold itself resulted in extremely poor workability.

On the other hand, a type of molding mold in which an inner mold is fitted into an outer mold is also known, but since the inner mold is fixedly attached to the upper and lower outer molds, There were problems in that setting up required a lot of time and effort, the molding cycle was poor, and costs increased.

[Purpose of invention]

This idea was devised by focusing on these conventional problems, and it improves molding workability and allows for easy setup changes, making it easy to produce a wide variety of products in small quantities. Done,
A further object of the present invention is to provide a mold for molding a golf club head that can significantly improve productivity.

[Structure of the idea]

In order to achieve the above object, this invention provides an upper inner mold that is detachable to the upper outer mold, a lower inner mold divided into a plurality of parts that can be taken out and put into the lower outer mold, and this lower inner mold is used to mold By making it removable and removable together with the post-molded product, it is possible to set the molding material outside the mold, which improves work efficiency and reduces mistakes in setting. The gist of this is to shorten the molding cycle and significantly improve productivity.

[Example of idea]

Embodiments of this invention will be described below based on the accompanying drawings.

FIG. 1 is a sectional view of a molding die 1 implementing this invention, and FIG. 2 is a front view of FIG. 1. The molding die 1 has an upper outer mold 2 and a lower outer mold 3. It consists of

Inside the upper outer mold 2, an upper inner mold 4 is removably attached via bolts (not shown), and inside the lower outer mold 3, there are fitting recesses 5a, 5 having steps.
b is formed, and the lower inner molds 6a, 6b, which are divided into two, are housed in the fitting recesses 5a, 5b in a detachable and removable manner.

At the bottom of the fitting recess 5b of the lower outer mold 3, pins 7a and 7b are provided to push up the two-divided lower inner mold 6a and 6b from the fitting recess 5b. Engagement grooves 10a and 10b each having a U-shaped cross section are formed on the opposing inner wall surfaces of the recess 5a toward the insertion and removal opening 8 of the lower inner molds 6a and 6b formed on one side of the lower outer mold 3. formed in parallel.

Further, on the side surfaces of the lower inner molds 6a, 6b, engagement protrusions 9a, which can slide in the engagement grooves 10a, 10b having a U-shaped cross section and in the vertical direction, are provided.
9b is integrally formed.

These engaging protrusions 9a, 9b are connected to the lower inner molds 6a, 6b.
When it is fitted into the fitting recess 5b of the lower outer mold 3, it comes into contact with the bottom side of the engaging grooves 10a, 10b, and the lower inner molds 6a, 6b push up the pins 7a, 7b to prevent the fitting. When pushed up to the matching recess 5a,
It moves to the upper side of the engagement grooves 10a, 10b.

Further, the contact surfaces X of the lower inner molds 6a, 6b and the engagement grooves 10a, 10 into which the engagement protrusions 9a, 9b fit.
b is formed in a downwardly tapered shape to facilitate positioning.

Next, a method of molding the molding die 1 constructed as described above will be explained with reference to FIGS. 1 to 3.

First, on the outside of the molding die 1, the contact surfaces X of the lower inner molds 6a and 6b which are divided into two parts are butted together, and the molding recess P formed by the lower inner molds 6a and 6b is filled with fiber reinforcement. Setting the plastic molding material.

The lower inner molds 6a, 6b prepared in this way are inserted into the fitting recess 5a and the engaging grooves 10a, 10 of the lower outer mold 3.
The center part of the lower inner molds 6a, 6b and the engagement protrusion 9 are shown in b.
a and 9b are engaged with each other, and the lower outer mold 3 shown in FIG.
a, 6b are inserted into the fitting recess 5b which has a step difference from the fitting recess 5a, and the setting is completed.

From this state, the upper inner mold 4 and the attached upper outer mold 2
is placed over the lower outer mold 3 so that the upper inner mold 4 fits into the molding recess P constituted by the lower inner molds 6a and 6b, and is closed and fixed.In this state, the molding die 1 is placed in a predetermined position. The fiber-reinforced plastic molding material set in the molding recess P is molded by heating.

Next, after the molding operation is completed, the upper outer mold 2 and the upper inner mold 4 are removed from the lower outer mold 3, and then, as shown by the arrow in FIG. The inner molds 6a, 6b are pushed up to the fitting recess 5a by the push-up pins 7a, 7b, and the lower inner mold 6 is pushed up.
The upper parts of a and 6b are lifted upward from the upper surface of the lower outer mold 3 along the engagement grooves 10a and 10b.

At this time, the engaging protrusions 9a, 9b located on the bottom side of the engaging grooves 10a, 10b also
10b.

From this state, the lower inner molds 6a and 6b, which hold the molded product in the molding recess P and are pushed up into the fitting recess 5a, are moved in the direction of the arrow in FIG. 3, that is, into the engagement grooves 10a and 10b. The lower outer mold 3 is pulled out along the insertion/extraction opening 8 side formed on the front side, and the lower inner molds 6a, 6b are taken out of the molding die 1 together with the molded product.

Then, outside the molding die 1, the lower inner molds 6a, 6b are divided and the molded club head product is taken out.

By repeating the above molding operation, the molding operation can be carried out efficiently, and when changing the setup, the upper inner mold 4 and the lower inner mold 6a, 6
By simply replacing b, the desired product can be easily manufactured.

[Effect of idea]

This idea is to provide a removable upper inner mold to the upper outer mold as described above, and a lower inner mold divided into a plurality of parts to be removable in and out of the lower outer mold. In addition, since it is provided in a detachable and removable manner, the following excellent effects can be achieved.

(a) The molding material can be prepared outside the mold, making the work safer and easier, reducing material setting errors, and molding products with high precision. I can do it.

(b) Since the outer mold can be used in common and molding can be performed simply by replacing the inner mold, setup changes can be easily performed even when molding a wide variety of products in small quantities. Mold cost can also be significantly improved.

(c) By using only a plurality of lower inner molds, the rotational efficiency of molding is improved and productivity can be improved.

(d) When replacing the mold, only the inner mold needs to be replaced, so it can be done with lighter work compared to conventional replacement work, and safety can also be improved.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a molding die implementing this invention, Figure 2 is a front view of Figure 1, and Figure 3 shows a method for taking out the lower inner mold from the lower outer mold together with the molded product. It is an explanatory diagram. 1... Molding die, 2... Upper outer mold, 3... Lower outer mold, 4... Upper inner mold, 5a, 5b... Fitting recess, 6
a, 6b... Lower inner mold, 7a, 7b... Push-up pin, 8... Lower inner mold insertion and removal opening.

Claims (1)

[Scope of utility model registration request] In a molding die for molding a golf club head mainly made of fiber-reinforced plastic using an upper outer mold and a lower outer mold, a removable upper inner mold is provided in the upper outer mold, and a plurality of molds are provided in the lower outer mold. 1. A mold for molding a golf club head, characterized in that a lower inner mold divided into two parts is removably provided, and the lower inner mold is provided so as to be detachable and removable together with the molded product after molding.