Head Forming Method

Abstract

A club head molding method is used to solve the problem that the club head is difficult to meet the needs of hitters for lightweight. It includes: providing a mold and a molding part, the mold has a first mold cavity and a second mold cavity, the first mold cavity and the second mold cavity form a molding space, and the molding part has a molding air bag; a first thermoplastic sheet is located in the first mold cavity, and a second thermoplastic sheet is located in the second mold cavity, and the molding air bag is located between the first thermoplastic sheet and the second thermoplastic sheet; and the first thermoplastic sheet and the second thermoplastic sheet are hot-pressed by the mold, so that the molding air bag supports the first thermoplastic sheet and the second thermoplastic sheet against the first mold cavity and the second mold cavity respectively. In this way, the club head can be lightweighted.

Description

Technical Field

[0001] The invention relates to a club head forming method, in particular to a club head forming method by hot pressing carbon fiber forming. Background Art

[0002] Generally, when forming a club head, a molten metal can be poured into a shell mold of the club head, and the club head of a predetermined shape can be formed after the molten metal solidifies. Alternatively, a metal plate can be forged to form the club head of a predetermined shape. However, the above method uses metal materials to form a club head of a predetermined shape, which is difficult to meet the needs of hitters for lightweighting.

[0003] In view of this, the existing club head molding method still needs to be improved. Summary of the invention

[0004] To solve the above problems, the object of the present invention is to provide a club head molding method, which uses carbon fiber to mold a predetermined club head to reduce the weight of the club head.

[0005] The directions or their approximate terms described throughout the present invention, such as "front", "rear", "left", "right", "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., mainly refer to the directions of the attached drawings, and each direction or its approximate terms are only used to assist in the explanation and understanding of the embodiments of the present invention, and are not used to limit the present invention.

[0006] The elements and components described throughout the present invention use the quantifiers "a" or "an" only for 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 a single concept also includes multiple situations, unless it is obvious that it means otherwise.

[0007] The similar terms such as "combination", "assembly" or "assembly" described in the whole text of the present invention mainly include the connection that can be separated without damaging the components, or the connection that makes the components inseparable. Those skilled in the art can choose according to the materials of the components to be connected or the assembly requirements.

[0008] The club head molding method of the present invention comprises: providing a mold and a molding part, wherein the mold has a first mold cavity and a second mold cavity, the first mold cavity and the second mold cavity form a molding space, and the molding part has a molding air bag, and the molding air bag is located in the molding space; positioning a first thermoplastic sheet in the first mold cavity, positioning a second thermoplastic sheet in the second mold cavity, and positioning the molding air bag between the first thermoplastic sheet and the second thermoplastic sheet; and hot pressing the first thermoplastic sheet and the second thermoplastic sheet through the mold, and introducing gas into the molding air bag during the hot pressing, so that the molding air bag supports the first thermoplastic sheet and the second thermoplastic sheet against the first mold cavity and the second mold cavity respectively.

[0009] Therefore, the club head molding method of the present invention can respectively support the first thermoplastic sheet and the second thermoplastic sheet against the first mold cavity and the second mold cavity after the molding air bag of the molding piece is inflated, and can simultaneously shape the first thermoplastic sheet and the second thermoplastic sheet into a club head semi-finished product through pressure from both inside and outside, and can mold the club head with lighter thermoplastic sheets to achieve the effect of lightweighting the club head.

[0010] The mold is formed by combining a first mold and a second mold, the first mold has the first mold cavity, the second mold has the second mold cavity, the mold has a positioning portion, the positioning portion is adjacent to the molding space, the positioning portion is formed by combining an upper groove and a lower groove, the upper groove is located in the first mold, and the lower groove is located in the second mold. In this way, the positioning portion can provide the function of positioning the molding.

[0011] The mold has an opening, which connects the positioning portion with the outside world. Thus, the opening can expose the vent hole of the molded part, which facilitates the inflation of the molded air bag.

[0012] The molding part has a fixing part, the molding air bag is connected to a surface of the fixing part, and the fixing part is combined with the positioning part of the mold so that the molding air bag is located in the molding space. In this way, the molding part can be fixed to the mold through the fixing part.

[0013] The first thermoplastic sheet and the second thermoplastic sheet are made of thermoplastic resin impregnated with carbon fiber, so that the first thermoplastic sheet and the second thermoplastic sheet have better strength.

[0014] The club head forming method of the present invention may further include pre-cutting and shaping the first thermoplastic sheet and the second thermoplastic sheet respectively, so that the first thermoplastic sheet has a size and shape corresponding to the first mold cavity, and the second thermoplastic sheet has a size and shape corresponding to the second mold cavity. In this way, the hot pressing efficiency is better.

[0015] The first thermoplastic sheet and the second thermoplastic sheet cover the molding air bag so that the molding air bag is located between the first thermoplastic sheet and the second thermoplastic sheet. In this way, the first thermoplastic sheet and the second thermoplastic sheet can be temporarily positioned on the molding air bag, which is convenient for mold closing.

[0016] The periphery of the first thermoplastic sheet slightly overlaps the periphery of the second thermoplastic sheet, so that the first thermoplastic sheet and the second thermoplastic sheet can have better matching and tightness.

[0017] The overlap width between the periphery of the first thermoplastic sheet and the periphery of the second thermoplastic sheet is between 8 and 12 mm, so that the first thermoplastic sheet and the second thermoplastic sheet can have better bonding properties.

[0018] After the mold performs hot pressing on the first thermoplastic sheet and the second thermoplastic sheet, the first mold and the second mold are cooled to perform cold pressing on the first thermoplastic sheet and the second thermoplastic sheet. In this way, the first thermoplastic sheet and the second thermoplastic sheet after hot pressing can be shaped. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : A die diagram of a club head forming method according to a preferred embodiment of the present invention; Figure 2 : Schematic diagram of inflation of the molded air bag.

[0020] Description of reference numerals: 1: Mould 1a: First mold 1b: Second mold 11: First cavity 12: Second cavity 13: Positioning unit 13a: Upper groove 13b: Lower slot 14: Opening 2: Molding parts 21: Fixed part 22: Molded airbags 23: Ventilation hole W1: First thermoplastic sheet W2: Second thermoplastic sheet S: Shaping space. DETAILED DESCRIPTION

[0021] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments of the present invention are specifically cited below and described in detail with reference to the accompanying drawings; in addition, those marked with the same symbols in different drawings are regarded as the same and their descriptions are omitted.

[0022] Please refer to Figure 1 As shown, it is a preferred embodiment of the club head molding method of the present invention, including providing a mold 1 and a molding member 2, the molding member 2 is located in the mold 1, and a first thermoplastic sheet W1 and a second thermoplastic sheet W2 are hot-pressed through the molding member 2 so that the first thermoplastic sheet W1 and the second thermoplastic sheet W2 are hot-pressed and matched.

[0023] The mold 1 may have a mold cavity with a shape corresponding to a predetermined rod head outer contour. Further, the mold 1 may be formed by a first mold 1a and a second mold 1b. In the present embodiment, the first mold 1a has a first mold cavity 11, and the second mold 1b has a second mold cavity 12. When the first mold 1a and the second mold 1b are matched, the first mold cavity 11 and the second mold cavity 12 form a molding space S, and the molding space S can be used to mold the thermoplastic material into the outer contour of the predetermined rod head. In addition, the mold 1 has a positioning portion 13, which can be adjacent to the molding space S, and the positioning portion 13 is used for positioning the molding part 2 in the mold 1. In the present embodiment, the positioning portion 13 can be a groove body, and the positioning portion 13 is formed by a top groove 13a and a bottom groove 13b, and the top groove 13a is located in the first mold 1a, and the bottom groove 13b is located in the second mold 1b. Thus, when the first mold 1a and the second mold 1b are matched, the positioning portion 13 can position the molded part 2 between the first mold 1a and the second mold 1b. The mold 1 can also have an opening 14, which connects the positioning portion 13 with the outside, so that when the first mold 1a and the second mold 1b are matched, the molded part 2 can be partially exposed.

[0024] The molding part 2 has a fixing portion 21 and a molding air bag 22. The molding air bag 22 is connected to a surface of the fixing portion 21. The fixing portion 21 has a vent hole 23. The vent hole 23 is connected to the molding air bag 22. The fixing portion 21 can be combined with the positioning portion 13 of the mold 1 so that the molding air bag 22 is located in the molding space S, and the vent hole 23 can be exposed through the opening 14 of the mold 1. In this way, the molding air bag 22 can be inflated through the vent hole 23. The molding air bag 22 is preferably made of a flexible material, and the molding air bag 22 can have a volume corresponding to the molding space S, or the molding air bag 22 can have a volume slightly larger than the molding space S after being fully inflated. In this way, the molding air bag 22 can be supported against the inner walls of the first mold cavity 11 and the second mold cavity 12 by inflating.

[0025] Please refer to Figure 1 , Figure 2 As shown, the material of the first thermoplastic sheet W1 and the second thermoplastic sheet W2 may be a thermoplastic resin impregnated with carbon fiber, and the thermoplastic resin may be a polycarbonate resin (PC resin). The first thermoplastic sheet W1 and the second thermoplastic sheet W2 may be used to form the predetermined club head together. Furthermore, the first thermoplastic sheet W1 and the second thermoplastic sheet W2 may be combined to form the predetermined club head. For example, the first thermoplastic sheet W1 and the second thermoplastic sheet W2 may respectively have shapes corresponding to the upper half and the lower half (crown and bottom) of the predetermined club head, or the first thermoplastic sheet W1 and the second thermoplastic sheet W2 may respectively have shapes corresponding to the left half and the right half (toe and root) of the predetermined club head.

[0026] In this embodiment, the first thermoplastic sheet W1 and the second thermoplastic sheet W2 can be cut and shaped in advance, so that the first thermoplastic sheet W1 has a size and shape corresponding to the first mold cavity 11, and the second thermoplastic sheet W2 has a size and shape corresponding to the second mold cavity 12. Then, the first thermoplastic sheet W1 is positioned in the first mold cavity 11, and the second thermoplastic sheet W2 is positioned in the second mold cavity 12, and the molding air bag 22 of the molding part 2 is positioned between the first thermoplastic sheet W1 and the second thermoplastic sheet W2. Preferably, the first thermoplastic sheet W1 and the second thermoplastic sheet W2 cover the molding air bag 22, so that the first thermoplastic sheet W1 and the second thermoplastic sheet W2 are roughly aligned. Furthermore, the periphery of the first thermoplastic sheet W1 and the periphery of the second thermoplastic sheet W2 may overlap slightly. Preferably, the overlapping width of the periphery of the first thermoplastic sheet W1 and the periphery of the second thermoplastic sheet W2 is between 8 and 12 mm, that is, the distance after the periphery of the first thermoplastic sheet W1 and the periphery of the second thermoplastic sheet W2 overlap is between 8 and 12 mm. In this way, the first thermoplastic sheet W1 and the second thermoplastic sheet W2 can have better bonding properties.

[0027] The first mold 1a and the second mold 1b are then heated, for example, by infrared or high frequency, so that the first mold 1a and the second mold 1b are heated, so that the first thermoplastic sheet W1 and the second thermoplastic sheet W2 are hot pressed for a predetermined time by the first mold 1a and the second mold 1b being molded together. The above hot pressing conditions can be adjusted according to the materials of the first thermoplastic sheet W1 and the second thermoplastic sheet W2, which can be understood by those skilled in the art, and the present invention will not be repeated here. While the above hot pressing is being performed, gas is introduced into the molding air bag 22 through the vent 23 of the molding 2. At this time, the molding air bag 22 can expand to support the first thermoplastic sheet W1 and the second thermoplastic sheet W2 against the first mold cavity 11 and the second mold cavity 12 respectively. The vent 23 can be ventilated, for example, by a high-pressure air gun, and the pressure can be monitored by a pressure gauge, which can be understood by those skilled in the art, and will not be repeated here. In this way, the first thermoplastic sheet W1 and the second thermoplastic sheet W2 can be simultaneously subjected to internal and external pressures for shaping and butt bonding. The first mold 1a and the second mold 1b can then be cooled to perform cold pressing on the first thermoplastic sheet W1 and the second thermoplastic sheet W2, so that the first thermoplastic sheet W1 and the second thermoplastic sheet W2 can be solidified to form a semi-finished club head.

[0028] In summary, the club head molding method of the present invention can respectively support the first thermoplastic sheet and the second thermoplastic sheet against the first mold cavity and the second mold cavity after the molding air bag of the molding piece is inflated, and the first thermoplastic sheet and the second thermoplastic sheet can be molded into a club head semi-finished product by pressure from both inside and outside at the same time. The club head can be molded by a lighter carbon fiber thermoplastic sheet to achieve the effect of lightweighting the club head.

[0029] Although the present invention has been disclosed using the above-mentioned 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-mentioned embodiments without departing from the spirit and scope of the present invention. These changes and modifications still fall 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 of the appended claims.

Claims

1. A club head forming method, characterized in that: include: A mold and a molding part are provided, wherein the mold has a first mold cavity and a second mold cavity, wherein the first mold cavity and the second mold cavity form a molding space, and the molding part has a molding air bag, wherein the molding air bag is located in the molding space; A first thermoplastic sheet is positioned in the first mold cavity, a second thermoplastic sheet is positioned in the second mold cavity, and the molding air bag is positioned between the first thermoplastic sheet and the second thermoplastic sheet; and The first thermoplastic sheet and the second thermoplastic sheet are hot-pressed by the mold, and gas is introduced into the molding air bag during the hot-pressing, so that the molding air bag supports the first thermoplastic sheet and the second thermoplastic sheet against the first mold cavity and the second mold cavity respectively.

2. The club head forming method according to claim 1, characterized in that: The mold is formed by combining a first mold and a second mold, the first mold has the first mold cavity, the second mold has the second mold cavity, the mold has a positioning portion, the positioning portion is adjacent to the molding space, the positioning portion is formed by combining an upper groove and a lower groove, the upper groove is located in the first mold, and the lower groove is located in the second mold.

3. The club head forming method according to claim 2, characterized in that: The mold has an opening, and the opening communicates the positioning portion with the outside.

4. The club head forming method according to claim 2, characterized in that: The molding part has a fixing part, the molding air bag is connected to a surface of the fixing part, and the fixing part is combined with the positioning part of the mold so that the molding air bag is located in the molding space.

5. The club head forming method according to claim 1, characterized in that: The first thermoplastic sheet and the second thermoplastic sheet are made of thermoplastic resin impregnated with carbon fiber.

6. The club head forming method as described in claim 1 further includes pre-cutting and shaping the first thermoplastic sheet and the second thermoplastic sheet respectively, so that the first thermoplastic sheet has a size and shape corresponding to the first mold cavity, and the second thermoplastic sheet has a size and shape corresponding to the second mold cavity.

7. The club head forming method according to claim 1, characterized in that: The first thermoplastic sheet and the second thermoplastic sheet cover the molded air bag so that the molded air bag is located between the first thermoplastic sheet and the second thermoplastic sheet.

8. The club head forming method according to claim 7, characterized in that: The perimeter of the first thermoplastic sheet slightly overlaps the perimeter of the second thermoplastic sheet.

9. The club head forming method according to claim 8, characterized in that: The overlapping width between the periphery of the first thermoplastic sheet and the periphery of the second thermoplastic sheet is between 8 mm and 12 mm.

10. The club head forming method according to claim 2, characterized in that: After the mold performs hot pressing on the first thermoplastic sheet and the second thermoplastic sheet, the first mold and the second mold are cooled to perform cold pressing on the first thermoplastic sheet and the second thermoplastic sheet.

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