JPH05104197A - Manufacture of wax pattern for casting golf head - Google Patents

Abstract

PURPOSE:To easily and efficiently manufacture a wax pattern having a cavity for casting a golf head with a lost wax method by removing a metallic mold and a core after forming by pouring the wax into the metallic mold setting the core in the inner part. CONSTITUTION:After the core 2 composed of the water soluble wax is fixed into the metallic mold 1, the water insoluble wax 5 is poured in the metallic mold and formed and the above core 2 is dissolved and removed with the water from an exposed part of the core in the formed body 4 taken out from the metallic mold. By this method, the core 2 can easily be dissolved and removed with the water. The deformation and the damage of the wax pattern caused by pulling-out of the core are eliminated. The wax pattern can be manufactured in the high yield and the high productivity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a wax pattern for casting a golf head, and more particularly to easily and efficiently producing a wax pattern used for casting a golf head by the lost wax method with a high yield. Regarding the method.

[0002]

2. Description of the Related Art As a method for producing hollow castings such as golf heads, the lost wax method, in which a mold is produced using a wax pattern prepared in advance, is a very effective method.

Conventionally, the wax pattern used in the lost wax method has been manufactured using a wax molding machine according to the method shown in FIG. That is, first, the mold 1 (1A,
After arranging the core members 2A, 2B, and 2C in 1B), wax is injected from the injection port 3 of the mold 1 to mold. Next, the mold is opened, the core member 2C is pulled out in the direction of arrow C, the core members 2A and 2B are respectively moved to the centers (arrows A and B directions), and then pulled down (arrow D), Take out the wax pattern 4.

[0004]

In the above-described conventional method for producing a wax pattern, mechanical stress is applied to the wax pattern when the core member is pulled out, so that the obtained wax pattern is not deformed or cracked. Damage easily occurs and yield is poor.

Since the work of removing the core is complicated in this way, it is difficult to form a plurality of cavities in one mold and form a plurality of wax patterns by one molding operation. There is also a drawback that the production efficiency is poor, because one wax pattern must be molded for each mold and one wax pattern must be taken.

The present invention solves the above-mentioned conventional problems and provides a method of manufacturing a wax pattern for casting a golf head, which can easily and efficiently manufacture a wax pattern for casting a golf head by the lost wax method with a high yield. With the goal.

[0007]

According to the method of manufacturing a wax pattern for casting a golf head of the present invention, the wax is injected into a mold in which a core is placed, the wax is molded, and then the mold and the core are removed. In a method for producing a golf head casting wax pattern having cavities, a core made of a water-soluble wax is fixed to a mold, and then a non-water-soluble wax is injected into the mold to mold it. It is characterized in that the core is dissolved and removed with water from the exposed core of the molded body taken out.

[0008]

In the method of the present invention, the core is composed of the water-soluble wax and the wax pattern is molded with the non-water-soluble wax. Therefore, the core is put into a water tank together with the molded wax pattern. It can be easily dissolved in water and removed.

For this reason, it is not necessary to perform the complicated work of pulling out the core as in the conventional case, and the wax pattern is deformed or cracked.
The core can be removed without causing damage.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 (a) to 1 (c) are sectional views showing an embodiment of a method for manufacturing a wax pattern for golf head casting according to the present invention.

In the illustrated method, first, FIG.
As shown in FIG. 3, a core 2 made of a water-soluble wax prepared in advance is fixed in a mold 1 (1A, 1B), and then,
The water-insoluble wax 5 is injected and injected from the injection port of the mold 1. Here, the core 2 has a fixing protrusion 2a, and the fixing protrusion 2a is formed into the fitting recess 1 formed in the mold 1B.
The core 2 is fixed in the mold 1 by fitting with a.

After the water-insoluble wax 5 is cured, the mold 1
Open and take out the wax pattern 4 with the core 2 wrapped inside. Next, as shown in FIG. 1B, the wax pattern 4 is placed in the water tank 6 while the core 2 is wrapped, and the core 2 is dissolved in water or hot water 6A and removed. The core 2 is promptly dissolved from the above-mentioned fixing protrusion 2a.

As a result, a wax pattern 4 for a golf head having a hollow structure as shown in FIG. 1C is obtained.

In the present invention, as the water-insoluble wax, a wax used in a usual lost wax method can be used.

On the other hand, as the water-soluble wax constituting the core, one generally called a water-soluble wax, urea resin or the like can be used.

A method for dissolving and removing the core made of such a water-soluble wax in water or hot water is as shown in the drawing.
In addition to the method of charging in a water tank, a method of washing with a water stream, a method of exposing to water vapor, or the like can be adopted.

[0018]

As described in detail above, according to the method for manufacturing a wax pattern for casting a golf head of the present invention, a wax pattern used for casting a golf head by the lost wax method can be manufactured with high dimensional accuracy and high yield. It is possible to manufacture easily and efficiently.

In particular, according to the method of the present invention, since the core can be easily removed, it is possible to change from the conventional one-piece picking to a large number of pick-ups, and the productivity is remarkably improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a method of manufacturing a wax pattern for casting a golf head of the present invention.

FIG. 2 is a cross-sectional view showing a conventional method.

[Explanation of symbols]

 1,1A, 1B Mold 2 Core 3 Filling port 4 Wax pattern

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuaki Miyazaki 3-1, 1-1 Tama, Tamano City, Okayama Prefecture Mitsui Engineering & Shipbuilding Co., Ltd. Tamano Plant

Claims (1)

[Claims] 1. A method for producing a wax pattern for casting a golf head having cavities by injecting wax into a mold having a core inside for molding, and then removing the mold and the core. After fixing the core made of water-soluble wax to the mold, inject the non-water-soluble wax into the mold to mold it, and dissolve the core with water from the exposed core of the molded body taken out from the mold. A method for producing a wax pattern for casting a golf head, which comprises removing the wax pattern.