JPS61232875A - Method for sand blast stamping of golf club head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for sandplast engraving of a golf club head, in which sandplast engravings such as letters, figures, numbers, etc. are formed by spraying abrasive grains onto the golf club head.

[Technical background and problems]

Conventionally, engraving means using a drill or a branding method have been used as a method for engraving identification parts such as letters, figures, numbers, etc. on iron golf club heads and wood golf club heads. However, with the engraving method, it is not possible to create delicate lines, and there are interlayers with low work efficiency.On the other hand, the branding method cannot be used on iron golf club heads, and even on wood golf club heads, the character spacing is If the characters are close together, there is a risk that the spacing between characters may be distorted.

As a means to solve such problems, Japanese Patent Laid-Open No. 57-1
A method of sandplast stamping on a golf wood head is known in Japanese Patent Publication No. 75372.0 This method involves placing a mask with through holes for letters and figures on the hit line of abrasive grains blown out from a nozzle, and passing through the mask. The abrasive grains are applied to the engraved surface of a golf wood head positioned facing the mask to make a sandplast engraving on the wood head.

However, in this method, since the surface to be carved of the head and the mask are separated, unless the grindstone moves straight behind the mask, the edge where the marking is formed will not be the same as the edge of the through hole of the mask.

Then, after the mask, some of the grindstones cannot go straight due to collisions between the grindstones and the edges cannot be finished in the same way. There is also a risk that the whetstone that roughly collides with the surface to be carved will be scattered and collide again with other surfaces other than the surface to be carved, damaging the area around the surface to be carved.

Furthermore, in this method, for example, A, B.

For characters such as D, OXP, Q, and R where all or part of the character is surrounded by a line around the entire circumference and the center is cut out when formed with a through hole, the outside 11 and the center 12 are used as shown in Fig. 3. In order to connect the two, it is necessary to form a bridge 13 to support the center part 12. However, the method of providing the bridge 13 results in a collection of discontinuous lines, and it is not possible to achieve a beautiful finish, especially when stamping designed characters or complicated figures.

[Purpose of the invention]

This invention relates to a sandplast engraving method for a golf club head in which sandplast engravings such as letters, figures, numbers, etc. are formed by spraying abrasive grains onto the golf club head through a mask, in which the mask and the surface to be engraved on the golf club head are brought close to each other. The purpose of this method is to form an imprint that is the same as the edge of a slot formed in a mask, and to form a complex imprint by a collection of continuous lines.

[Summary of the invention]

This invention consists in closely contacting a mask layer formed by slots with identification parts such as letters, figures, numbers, etc. covered with a thin film on the etched surface of a golf club head, and spraying abrasive grains onto this mask layer from a nozzle. 0 [Example] As shown in FIG. 1 and FIG. 2 (2) to (Q), identification portions such as letters, figures, and numbers are formed on the mask layer 2 that is in close contact with the engraved surface 1a of the metal golf club head 1. A slot 4 is provided. A thin film 3 is stretched over the slot 4 on the surface 1a to be carved. Then, compressed air is discharged from a compressor (not shown) and abrasive grains 5 are blown out from a nozzle 6 to form a mask layer. 2, some of the abrasive grains 5 break through the thin film body 3 and collide directly with the surface 1a to be carved, as shown in FIG. The portion 7 is formed as shown in FIG.

The mask layer 2 is a soft plastic sheet 2b coated with an adhesive 2a on the lower surface, and the outer side 2C and the center portion 2d are connected and supported by the thin film body 3. Then, this plastic sheet 2b is adhered to the surface 1a to be carved to form a mask layer 2.

After the sandplast treatment, the mask layer 2 is peeled off to remove the adhering abrasive grains 5, and as shown in FIG.
form.

The size and edge thickness of the slots 4 of the identification portions such as letters, figures, numbers, etc. formed on the mask layer 2 are appropriately selected according to the marking display, and the thin film body 3 covers all or part of the slots 4. Set it so that it partially covers it.

Further, in the embodiment, the thin film body 3 is provided on the side of the surface to be carved 1a, but it may be provided on the upper side.

In this way, the carved surface 1a of the metal golf club head 1
The mask layer 2 is formed by pasting the soft plastic sheet 2b on the mask layer 2, and the grooves 4 forming the identification portions are provided in the mask layer 2, so that the mask layer 2 comes into close contact with the surface 1a to be carved, and this groove By spraying abrasive grains 5 from the hole 4 side, a sandplast stamped portion 7 is formed along the edge 4a of the slot 4. Therefore, since there is no gap between the mask layer 2 and the carved surface 1a of the metal golf club head 1, the slot 4
All the abrasive grains 5 that have passed through go straight inside the edge 4a of the slot 4, forming the same edge 7a. - The abrasive grains 5 that pass through the blade slot 4, hit the surface 1a to be carved, and are reflected are blocked by the mask layer 2, and there is no risk of marking anything other than the slot 4.

In addition, the central part 2d of the identification part formed on the soft plastic sheet 2b and the outer part 2C provided at a distance on the outside thereof.
A thin film body 3 is integrally provided in between, and by spraying abrasive grains 5, the thin film body 3 is broken, and a sandplast stamped part 7 can be formed on the surface 1a to be carved, and the connected lines can be used to sand letters, figures, numbers, etc. The plastic stamped part 7 can be processed. Moreover, by providing the thin film body 3 so as to cover the slot 4, the surface to be carved can be
a The time required for spraying the abrasive over the entire surface is the same, and as a result, the sandplast stamped portion 7 having a uniform depth can be formed.

〔Effect of the invention〕

In this invention, a mask layer formed by grooves in which identification parts such as letters, figures, numbers, etc. are covered with a thin film is brought into close contact with the etched surface of a golf club head, and abrasive grains are sprayed onto this mask layer from a nozzle. Therefore, compared to the sandplast stamping method described above, the edge of the sandplast stamped part is in the same line as the edge of the slot, and there is a risk that the surface to be engraved other than the sandplast stamped part may be scratched by the abrasive grains. You can create a beautiful finish without any problems. Furthermore, a complex sandplast stamped portion can be formed by a collection of lines connected by the thin film.

[Brief explanation of drawings]

Fig. 1 is a perspective view, Fig. 2 shows the 1st to 3rd steps, Fig. 2 is a sectional view of the first step, and the second drawing is a sectional view of the second step.
Fig. 2 (0 is a cross-sectional view of the third step, and Fig. 3 is a front view of the conventional method. 1. Metal golf club head 2. Mask layer 3. Thin film body 4. Slot hole 5. Grinding. Grain patent applicant: Soto Seisakusho Co., Ltd. Patent attorney Mamoru Ushiki Figure @211 (A) II3■

Claims (1)

[Claims] A mask layer formed by slots in which identification parts such as letters, figures, numbers, etc. are covered with a thin film is brought into close contact with the etched surface of the golf club head, and abrasive grains are sprayed onto this mask layer from a nozzle. Sandplast engraving method for golf club heads.