TWI863185B - A method for forming a club head pattern - Google Patents

Abstract

The invention provides a method for forming a club head pattern, which is used to solve the problem that the existing mold for forming the club head pattern is easy to wear. It includes: positioning a half-finished rod head in a mold cavity for leveling, the flattened mold cavity has at least one flat surface opposite to at least one portion to be decorated on the semi-finished rod head, and the mold weighs 100-700 tons applying pressure, cold pressing the half-finished rod head for 0.5-10 seconds; Located in the part to be decorated after leveling, the concave part has a forming peripheral edge, and the mold for forming the cavity is pressed with a weight of 100-700 tons to cold-press the semi-finished rod head after leveling for 0.5-10 seconds, so that the The flattened at least one portion to be decorated is not crimped in the at least one concave portion to form the predetermined pattern.

Description

Club head pattern forming method

The present invention relates to a method for forming a club head pattern, and in particular to a method for forming a club head pattern by cold pressing.

When manufacturing a golf club head, the manufacturer may form patterns such as patterns or trademarks on the golf club head to give the golf club head a better appearance or to promote the manufacturer. For example, the golf club head has a back, which is located on the other side of the hitting surface. The back does not actually affect the hitting of the ball. Therefore, the back of the golf club head can be used to form patterns such as patterns or trademarks. The existing method of forming patterns on the back of the club head is to form the pattern on the back of the club head in a mold with a corresponding pattern cavity by cold pressing. The mold has a convex portion in the mold cavity corresponding to the back of the club head, and the convex portion has a shape of a predetermined pattern, that is, the convex portion is pressed against the back of the club head to form a concave portion corresponding to the predetermined pattern on the back of the club head.

However, when the convex part in the mold cavity is pressed against the rod head, the convex part will be subjected to great stress, especially the edge of the convex part is easy to be worn. When the shape of the convex part has a relatively sharp edge such as a sharp corner, the sharp edge will gradually become blunt after continuous wear, so that the predetermined pattern cannot be formed, resulting in a decrease in production yield.

In view of this, the existing method of forming the back pattern of the club head still needs to be improved.

To solve the above problems, the purpose of the present invention is to provide a rod head pattern forming method that can reduce the wear of the mold cavity.

The second purpose of the present invention is to provide a method for forming a club head pattern, which can improve the yield of the club head pattern forming process.

The directions or similar terms described in the present invention, such as "front", "rear", "left", "right", "upper", "lower", "inner", "outer", "side", etc., are mainly for reference to the directions of the attached drawings. Each direction or similar terms are only used to assist in the description and understanding of the various embodiments of the present invention, and are not used to limit the present invention.

The quantifiers "one" or "a" used in the components and parts described throughout the present invention are only for the convenience of use and to provide a general meaning of the scope of the present invention; in the present invention, they should be interpreted as including one or at least one, and the single concept also includes the plural case, unless it is obvious that it means otherwise.

The similar terms such as "combination", "assembly" or "assembly" mentioned in the present invention mainly include the connection that can be separated without damaging the components, or the connection that makes the components inseparable, which can be selected by those with ordinary knowledge in the field according to the materials of the components to be connected or the assembly requirements.

The method for forming a club head pattern of the present invention comprises: positioning a club head semi-finished product in a flattening die cavity in a mold, the flattening die cavity having at least one flat surface facing at least one portion to be decorated of the club head semi-finished product, the mold applying a pressure of 100-700 tons to cold press the club head semi-finished product for 0.5-10 seconds, so that the at least one flat surface flattens the at least one portion to be decorated, the carbon content of the club head semi-finished product is less than or equal to 0.25% by weight in the alloy composition of the club head semi-finished product, the at least one flat surface has two virtual reference planes, the two reference planes are respectively located at the lowest plane and the highest plane of the at least one flat surface, and the two reference planes are parallel to each other. , and a vertical distance between the two reference surfaces is less than or equal to 0.3mm; and a semi-finished club head with at least one flattened portion to be decorated is positioned in a forming cavity in a mold, the forming cavity having at least one recess, the at least one recess corresponding to the at least one flattened portion to be decorated, the at least one recess having a forming periphery, the forming periphery surrounding a predetermined pattern, the mold of the forming cavity applies a pressure of 100-700 tons to cold press the semi-finished club head with at least one flattened portion to be decorated for 0.5-10 seconds, so that the at least one flattened portion to be decorated is not pressed in the at least one recess, so as to form the predetermined pattern.

Accordingly, the club head pattern forming method of the present invention cold presses the semi-finished club head through the flattening die cavity, first flattens the part to be decorated of the semi-finished club head, so that the flattened part to be decorated can be used to clearly present the predetermined pattern. The semi-finished club head is further cold pressed through the forming die cavity, and the forming die cavity has a concave portion corresponding to the predetermined pattern, and the concave portion forms a relative protrusion that is not pressed on the flattened part to be decorated, so as to form the predetermined pattern, so that the stress of the cold pressing on the forming die cavity can be dispersed to the relatively larger non-depressed area of the forming die cavity, and the wear of the forming die cavity can be reduced, so as to achieve the effect of extending the service life of the mold and surely forming the predetermined pattern. In addition, the semi-finished club head can be easily shaped by cold pressing, which has the effect of making the flattening mold cavity easily flatten the back of the semi-finished club head. The at least one flat surface can have only slight undulations, so that after the at least one flat surface flattens the at least one portion to be decorated, the at least one portion to be decorated can have a relatively flat effect.

The mold of the flattening mold cavity applies 200 tons of pressure to cold-press the semi-finished rod head for 0.5 to 10 seconds. In this way, the flattening surface of the flattening mold cavity can flatten the part to be decorated, which has the effect of forming a flat surface for the part to be decorated.

Among them, the at least one concave portion has a groove bottom, and there is a vertical distance between the groove bottom and the molding periphery, and the vertical distance is 0.05~2mm. In this way, the concave portion can make the part to be decorated form a relative protrusion of a predetermined height size, which has the effect of forming a predetermined size pattern.

The mold of the forming cavity applies 200 tons of pressure to cold press the semi-finished rod head for 0.5 to 10 seconds. In this way, the part to be decorated is formed to correspond to the predetermined pattern of the concave part.

Among them, the semi-finished shaft head is cold pressed in the leveling mold cavity at 10-30°C, and the semi-finished shaft head is cold pressed in the forming mold cavity at 10-30°C. In this way, the semi-finished shaft head does not need to be additionally heated, which can achieve the effect of reducing costs.

1: Level the mold cavity

11,21: Upper mold cavity

12a: Flatten the plane

12,22: Lower mold cavity

2: Forming cavity

23: Concave part

23a: Groove bottom

24: Molding periphery

H: Semi-finished club head

H1: Decoration department

M:Mold

M1: Upper mold

M2: Lower mold

F: Base plane

D1,D2: vertical distance

[Figure 1] A three-dimensional diagram of a mold of a preferred embodiment of the present invention.

[Figure 2] Front view of the mold cavity of the lower mold of the present invention.

[Figure 3] A partial enlarged cross-sectional view of point A in Figure 2.

[Figure 4] A partial enlarged cross-sectional view of point B in Figure 2.

In order to make the above and other purposes, features and advantages of the present invention more clearly understood, the following specifically cites the preferred embodiments of the present invention and provides a detailed description in conjunction with the attached drawings; in addition, the same symbols in different drawings are considered the same and their descriptions will be omitted.

Referring to FIG. 1 and FIG. 2, a preferred embodiment of the method for forming a club head pattern of the present invention includes cold pressing a club head semi-finished product H with a first pressure in a flattening die cavity 1 to flatten the club head semi-finished product, and cold pressing the club head semi-finished product H with a second pressure in a forming die cavity 2 to form a predetermined pattern on the club head semi-finished product H. In addition, according to the needs of the industry, the predetermined pattern can be formed on the crown, sole, toe or back of the club head semi-finished product H, and the present invention is not limited thereto. In this embodiment, the predetermined pattern is formed on the back of the club head semi-finished product H as an example for explanation.

The flattening mold cavity 1 is located in a mold M, and the mold M can be formed by an upper mold M1 and a lower mold M2. The flattening mold cavity 1 can have an upper mold cavity 11, and the upper mold cavity 11 is located in the upper mold M1. The flattening mold cavity 1 can have a lower mold cavity 12, and the lower mold cavity 12 is located in the lower mold M2. The lower mold cavity 12 can have a shape corresponding to the back of the semi-finished club head H. The lower mold cavity 12 has at least one flat surface 12a, and the at least one flat surface 12a is located at least one portion H1 to be decorated of the semi-finished club head H. In this embodiment, the at least one portion H1 to be decorated is located at the back of the semi-finished club head H, and the at least one portion H1 to be decorated can be used to form patterns or trademarks.

The back of the semi-finished club head H can be positioned in the lower die cavity 12, and the face of the semi-finished club head H faces the upper die cavity 11, so that when the upper die M1 and the lower die M2 cold press the semi-finished club head H, the at least one flat surface 12a can flatten the at least one portion to be decorated H1 to flatten the at least one portion to be decorated H1. In addition, the semi-finished club head H can be made of alloy materials such as S20C, S25C or 8620, and the carbon content of the semi-finished club head H can be less than or equal to 0.25% by weight in the above alloy composition. In this way, the semi-finished club head H can be easily shaped by cold pressing.

Please refer to FIG. 2 and FIG. 3. It is worth noting that due to uncontrollable factors such as tolerance in mold manufacturing, multiple undulating concave parts and convex parts will be formed on the at least one whole plane 12a. The two virtual reference planes F can be located at the lowest surface of the multiple concave parts and the highest surface of the multiple convex parts respectively. The two reference planes F are parallel to each other, and a vertical distance D1 between the two reference planes F is less than or equal to 0.3 mm. In this way, the at least one whole plane 12a can have only slight undulations, so that after the at least one whole plane 12a is pressed flat against the at least one portion to be decorated H1, the at least one portion to be decorated H1 can form a better flat surface. The upper mold M1 and the lower mold M2 apply a pressure of 100-700 tons to cold-press the semi-finished shaft head H in the flattening mold cavity 1 for 0.5-10 seconds. Preferably, the semi-finished shaft head H can be cold-pressed in the flattening mold cavity 1 at 10-30°C. In another embodiment, the upper mold M1 and the lower mold M2 can apply a pressure of 200 tons to cold-press the semi-finished shaft head H. In this way, the flattening plane 12a can make the portion to be decorated H1 form a flat surface.

Please refer to FIG1 . After the semi-finished club head H to be decorated portion H1 is flattened, it is removed from the flattening mold cavity 1 and then positioned in the forming mold cavity 2. The forming mold cavity 2 can be formed by matching an upper and a lower mold. The forming mold cavity 2 can be located in the same mold as the flattening mold cavity 1, or the forming mold cavity 2 can be located in another mold different from the flattening mold cavity 1. In this embodiment, the forming mold cavity 2 is located on the same mold as the flattening mold cavity 1. The forming mold cavity 2 can have an upper mold cavity 21, and the upper mold cavity 21 is located in the upper mold M1. The forming mold cavity 2 can have a lower mold cavity 22, and the lower mold cavity 22 is located in the lower mold M2. The lower mold cavity 22 of the forming mold cavity 2 can have a shape corresponding to the back of the semi-finished club head H, so that the back of the semi-finished club head H can be positioned in the lower mold cavity 22. In this way, the upper mold M1 and the lower mold M2 can respectively cold press the two semi-finished rod head products H through the leveling mold cavity 1 and the forming mold cavity 2 to improve the working efficiency.

Please refer to Figures 2 and 3. The lower mold cavity 22 of the molding mold cavity 2 has at least one recess 23. The at least one recess 23 is located at the to-be-decorated portion H1 of the semi-finished rod head H. The at least one recess 23 can be a groove. The at least one recess 23 has a molding periphery 24. The molding periphery 24 can form a predetermined pattern around the at least one recess 23. The predetermined pattern can be text or a pattern. Through the molding periphery 24, the at least one recess 23 has a notch corresponding to the shape of the predetermined pattern. In detail, the at least one recess 23 has a groove bottom 23a. The groove bottom 23a has a vertical distance D2 to the molding periphery 24. The vertical distance D2 can be 0.05~2mm.

The upper mold M1 and the lower mold M2 apply a pressure of 100 to 700 tons to cold-press the semi-finished club head H in the forming mold cavity 2 for 0.5 to 10 seconds. Preferably, the semi-finished club head H can be cold-pressed in the forming mold cavity 2 at 10 to 30°C. In another embodiment, the upper mold M1 and the lower mold M2 can cold-press the semi-finished club head H at a pressure of 200 tons. Thus, when the upper mold M1 and the lower mold M2 cold press the semi-finished club head H, the molding cavity 2 presses the back of the semi-finished club head H through the height relative to the recess 23 (i.e., the portion of the molding cavity 2 other than the recess 23), so that the back of the semi-finished club head H is concave, and the at least one portion to be decorated H1 to which the recess 23 is aligned after leveling is not pressed, and other portions to be pressed relative to the back of the semi-finished club head H form a convexity, so that the at least one portion to be decorated H1 after leveling can be formed into a predetermined pattern corresponding to the recess 23.

That is, compared with the existing pattern forming method, which uses a relatively small convex part in the mold cavity to cold press the back of the rod head, causing stress to be concentrated on the relatively small convex part, which is easy to wear the convex part; the present invention uses at least one concave part 23 to form a relatively unpressed relative convexity in the part to be decorated H1 to form a relatively small area of the predetermined pattern, and uses a relatively large area of non-concave part for press-fitting, so that the stress during cold pressing can be dispersed to the relatively large area part in the mold cavity, and avoid the stress being concentrated on a small area, which causes an increase in the mold burden.

In summary, the club head pattern forming method of the present invention cold presses the semi-finished club head through the flattening die cavity, first flattens the part to be decorated of the semi-finished club head, so that the flattened part to be decorated can be used to clearly present the predetermined pattern. The semi-finished club head is further cold pressed through the forming die cavity, and the forming die cavity has a concave portion corresponding to the predetermined pattern, and the concave portion forms a relatively unpressed relative protrusion on the flattened part to be decorated to form the predetermined pattern, so that the stress of the cold pressing on the forming die cavity can be dispersed to the relatively larger non-depressed area of the forming die cavity, and the wear of the forming die cavity can be reduced, so as to extend the service life of the mold and ensure the effect of forming the predetermined pattern.

Although the present invention has been disclosed using the above preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art may make various changes and modifications to the above embodiments within the spirit and scope of the present invention, and the changes and modifications are still within the technical scope protected by the present invention. Therefore, the protection scope of the present invention shall include all changes within the meaning and equivalent scope recorded in the attached patent application scope.

1: Level the mold cavity

11,21: Upper mold cavity

12a: Flatten the plane

12,22: Lower mold cavity

2: Forming cavity

23: Concave part

H: Semi-finished club head

H1: Decoration department

M:Mold

M1: Upper mold

M2: Lower mold

Claims (5)

A method for forming a club head pattern is characterized in that it includes: positioning a club head semi-finished product in a flattening die cavity in a mold, the flattening die cavity having at least one flattening plane facing at least one part to be decorated of the club head semi-finished product, the mold applying a pressure of 100-700 tons to the club head semi-finished product for 0.5-10 seconds, so that the at least one flattening plane flattens the at least one part to be decorated, the carbon content of the club head semi-finished product is less than or equal to 0.25% by weight in the alloy composition of the club head semi-finished product, the at least one flattening plane has two virtual reference planes, the two reference planes are respectively located at the lowest plane and the highest plane of the at least one flattening plane, and the two reference planes are parallel to each other, and a vertical distance between the two reference surfaces is less than or equal to 0.3 mm; and a semi-finished club head with at least one flattened portion to be decorated is positioned in a forming cavity in a mold, the forming cavity having at least one recess, the at least one recess corresponding to the at least one flattened portion to be decorated, the at least one recess having a forming periphery, the forming periphery surrounding a predetermined pattern, the mold of the forming cavity applies a pressure of 100 to 700 tons to cold press the semi-finished club head with at least one flattened portion to be decorated for 0.5 to 10 seconds, so that the at least one flattened portion to be decorated is not pressed in the at least one recess, so as to form the predetermined pattern. As in claim 1, the method for forming a club head pattern, wherein the mold for flattening the mold cavity applies a pressure of 200 tons to cold press the semi-finished club head for 0.5 to 10 seconds. As in claim 1, the method for forming a club head pattern, wherein the at least one recess has a groove bottom, and the groove bottom has a vertical distance to the forming periphery, and the vertical distance is 0.05-2 mm. As in claim 1, the method for forming a club head pattern, wherein the mold of the forming cavity applies a pressure of 200 tons to cold press the semi-finished club head for 0.5 to 10 seconds. A method for forming a club head pattern as claimed in any one of claims 1 to 4, wherein the club head semi-finished product is cold pressed in the flattening mold cavity at 10-30°C, and the club head semi-finished product is cold pressed in the forming mold cavity at 10-30°C.

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