A method of making a golf club head striking face plate and applications thereof

Abstract

This invention discloses a method for preparing a golf club head striking panel and its application, relating to the field of golf club head processing technology. The golf club head striking panel includes a striking plate, an adhesive layer, and a back plate arranged sequentially; the striking plate is made of metal or a first polyurethane elastomer; the adhesive layer is made of Chemlok 213; and the back plate is made of a second polyurethane elastomer. The preparation method includes the following steps: S1, plasma cleaning of the striking plate; S2, coating the striking plate treated in step S1 with Chemlok 213, and heat-treating it at 90℃~110℃ to form an adhesive layer, obtaining a composite part; S3, injection molding the second polyurethane elastomer onto the adhesive layer to obtain the golf club head striking panel. The golf club head striking panel prepared by this method has good strength, firmness, and flatness.

Description

Technical Field

[0001] This invention relates to the field of golf ball head processing technology, and in particular to a method for preparing the striking face of a golf ball head and its application. Background Technology

[0002] A golf club mainly consists of a shaft and a clubhead. The clubhead has a striking face, which is the part that contacts the golf ball. In related technologies, golf club striking faces are generally made by adding a plastic indentation to a metal surface or by bonding two pieces of finished plastic together. However, adding a plastic indentation to the metal surface alters the metal's structure, reduces its strength, and affects its rebound force; while directly bonding two pieces of finished plastic together results in a golf club striking face with poor stability and cannot guarantee the thickness and flatness of the bonded surface. Both methods of making golf club striking faces can easily lead to unpredictable risks during a shot, resulting in poor hitting performance. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a method for manufacturing a golf ball head striking panel, which can effectively ensure the strength, durability, and flatness of the striking panel.

[0004] The present invention also provides the application of the above-mentioned method for preparing the striking panel of a golf ball head in the preparation of a golf ball head.

[0005] According to a first aspect of the present invention, a method for manufacturing a golf club head striking panel includes a striking plate, an adhesive layer, and a back plate arranged sequentially; the striking plate is made of metal or a first polyurethane elastomer; the adhesive layer is made of Chemlok 213; and the back plate is made of a second polyurethane elastomer.

[0006] The preparation method includes the following steps:

[0007] S1. Perform plasma cleaning on the striking plate;

[0008] S2. Apply Chemlok 213 to the hitting plate after step S1, and heat treat it at 90℃~110℃ to form an adhesive layer, thereby obtaining a composite part;

[0009] S3. The second polyurethane elastomer is injection molded onto the adhesive layer to obtain the golf ball head hitting panel.

[0010] The method for preparing the golf club head hitting panel according to embodiments of the present invention has at least the following beneficial effects:

[0011] The method for manufacturing the golf club head hitting panel in this embodiment overcomes the challenge of planar injection molding by using Chemlok 213 adhesive combined with heat treatment, laser cleaning, and plasma cleaning. This allows for the efficient injection molding of polyurethane elastomer onto a metal or another polyurethane elastomer, directly producing a two-piece golf club head hitting panel. The resulting hitting panel exhibits excellent flatness, structural stability, and high tensile strength, effectively meeting the quality requirements of golf balls.

[0012] According to some embodiments of the present invention, when the material of the hitting plate is metal, step S1 further includes at least one of ultrasonic cleaning and laser cleaning of the hitting plate;

[0013] And / or, when the material of the striking plate is a first polyurethane elastomer, step S1 further includes sandblasting the striking plate.

[0014] According to some embodiments of the present invention, when the material of the hitting plate is metal, step S1 includes: performing ultrasonic cleaning, laser cleaning, and plasma cleaning on the hitting plate in sequence.

[0015] According to some embodiments of the present invention, when the material of the hitting plate is a first polyurethane elastomer, step S1 includes: sequentially performing sandblasting and plasma cleaning on the hitting plate.

[0016] According to some embodiments of the present invention, the conditions for ultrasonic cleaning include: a temperature of 75°C to 85°C and an ultrasonic time of 2 to 6 minutes.

[0017] According to some embodiments of the present invention, the conditions for laser cleaning include: laser beam movement speed of 2500mm / s to 3000mm / s, frequency of 60kHz to 70kHz, and power of 55W to 65W.

[0018] According to some embodiments of the present invention, the abrasive used in the sandblasting process comprises 80# alumina abrasive. This increases the adhesion between Chemlok 213 and the first polyurethane elastomer.

[0019] According to some embodiments of the present invention, the metal includes at least one of 7075 aluminum alloy, 6-4 titanium alloy, SUS304 stainless steel, SUS316 stainless steel, and 17-4 stainless steel.

[0020] According to some embodiments of the present invention, the grade of the first polyurethane elastomer includes at least one of EL740 and EL630.

[0021] According to some embodiments of the present invention, the grade of the second polyurethane elastomer includes at least one of EL460, EM550, and EM400.

[0022] According to some embodiments of the present invention, the heat distortion temperature of the first polyurethane elastomer is ≥120°C.

[0023] According to some embodiments of the present invention, the hardness of the first polyurethane elastomer is greater than that of the second polyurethane elastomer.

[0024] According to some embodiments of the present invention, the power of the plasma cleaning is 900-950W.

[0025] According to some embodiments of the present invention, the composite part is always placed in an environment of 50°C to 90°C before the processing in step S3. This ensures that the temperature of the composite part before injection molding is consistent with the temperature of the injection mold, allowing Chemlok 213 to effectively act as an adhesive. Otherwise, if the temperature difference between the second polyurethane elastomer injection molding and the hitting plate is too large, the curing of Chemlok 213 will be unstable, and cracking will occur at the injection port (pointing to the injection port of the injection molding machine) of the golf ball head hitting panel.

[0026] According to some embodiments of the present invention, the first polyurethane elastomer is injection molded to obtain the hitting plate; the injection molding method of the first polyurethane elastomer or the second polyurethane elastomer includes the following steps:

[0027] Injection molding is performed using an injection molding machine; the temperature of the injection molding machine barrel from the feeding point to the nozzle is divided into four sections: the first section temperature is the melting temperature of the first polyurethane elastomer or the second polyurethane elastomer + (40~75)℃, the second section temperature is the first section temperature - (5~15)℃, the third section temperature is the second section temperature - (0~15)℃, and the fourth section temperature is the third section temperature - (0~15)℃.

[0028] According to some embodiments of the present invention, the grade of the first polyurethane elastomer is EL740; the injection molding method therein has a first stage temperature of 265-270°C, a second stage temperature of 260-265°C, a third stage temperature of 255-260°C, and a fourth stage temperature of 250-255°C.

[0029] According to some embodiments of the present invention, the grade of the second polyurethane elastomer is EM550; the injection molding method therein has a first stage temperature of 275-280°C, a second stage temperature of 265-270°C, a third stage temperature of 260-265°C, and a fourth stage temperature of 255-260°C.

[0030] According to some embodiments of the present invention, the grade of the second polyurethane elastomer is EM400; the injection molding method therein has a first stage temperature of 245-250°C, a second stage temperature of 235-240°C, a third stage temperature of 225-230°C, and a fourth stage temperature of 215-220°C.

[0031] The application of the above-described method for preparing the striking panel of a golf ball head according to a second aspect embodiment of the present invention in the preparation of a golf ball head.

[0032] According to some embodiments of the present invention, the application is specifically the preparation of a golf ball head striking panel.

[0033] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0035] Figure 1 This is a schematic diagram of the structure of the hitting panel of a golf ball head;

[0036] Figure 2 These are microstructure diagrams of the golf ball head striking panels prepared in Example 1 (A, metallurgical microscope) and Comparative Example 3 (B, electron microscope).

[0037] Figure label:

[0038] 101 striking plate, 102 adhesive layer, 103 back plate. Detailed Implementation

[0039] The following will describe the concept and technical effects of the present invention clearly and completely with reference to embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention.

[0040] Unless otherwise specified in the examples, the procedures should be performed under standard conditions or conditions recommended by the manufacturer. Reagents or instruments whose manufacturers are not specified are all commercially available products.

[0041] In the description of this invention, the use of terms such as "first," "second," etc., is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0042] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly limited, terms such as "setup" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0044] In the description of this invention, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, or product that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, or products.

[0045] When a numerical range is disclosed herein, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to integers, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are incorporated.

[0046] In the following examples, the melting temperature of Arnitel TPEE EL740 is 225°C; the hardness is 70 Shore D; and the heat distortion temperature is 123°C.

[0047] Arnitel TPEE EM550 has a melting temperature of 205°C, a hardness of 54 Shore D, and a heat distortion temperature of 112°C.

[0048] Arnitel TPEE EM400 has a melting temperature of 195℃, a hardness of 33 Shore D, and a heat distortion temperature of 100℃.

[0049] Example 1

[0050] This example provides a golf head striking panel, which consists of a striking plate 101, an adhesive layer 102, and a back plate 103 arranged in sequence; the striking plate 101 and the back plate 103 are bonded and fixed by the adhesive layer 102.

[0051] The material of the 101 striking plate is aluminum alloy 7075;

[0052] The adhesive layer 102 is made of Chemlok 213;

[0053] The backplate 103 is made of Arnitel TPEE EM550. The structure is as follows... Figure 1 As shown.

[0054] This example also provides a method for preparing the striking panel of a golf ball head, the steps of which are as follows:

[0055] S1, Treatment of the striking plate 101:

[0056] S11. Ultrasonic cleaning: After ultrasonic cleaning, the aluminum alloy 7075, which has been precision machined by computer digital control (CNC machining), is blown dry to remove surface oil and dirt.

[0057] The ultrasonic cleaning solvent was obtained by mixing water and HY-208 environmentally friendly cleaning agent at a volume ratio of 5:1; the ultrasonic cleaning conditions were 80±5℃ for 4 minutes.

[0058] S12, Laser cleaning: The aluminum alloy parts processed in step S11 are laser cleaned under the conditions of laser beam moving speed of 3000mm / s, frequency of 65kHz and power of 60W.

[0059] S13. Plasma cleaning: The aluminum alloy parts treated in step S12 are subjected to plasma cleaning at 900-950W to obtain the hitting plate 101.

[0060] S2. Using a 0.5mm nozzle spray gun, Chemlok 213 is evenly sprayed onto one side of the ball-hitting plate 101 after step S1 to form an adhesive layer 102. The mixture is then baked at 100℃ for 40 minutes to obtain the composite part. Before injection molding, the composite part is placed in a 50℃ heat preservation box.

[0061] S3, Injection Molding: Take the composite part obtained in step S2 out of the heat preservation box and put it into the injection molding machine. Inject Arnitel TPEE EM550 onto the adhesive layer 102 of the composite part to form the back plate 103, which is the golf head hitting panel.

[0062] The temperature of the injection molding machine barrel from the feeding point to the nozzle is divided into four sections: the first section temperature is 275-280℃, the second section temperature is 265-270℃, the third section temperature is 260-265℃, and the fourth section temperature is 255-260℃.

[0063] Example 2

[0064] This example provides a golf head striking panel, which consists of a striking plate 101, an adhesive layer 102, and a back plate 103 arranged in sequence; the striking plate 101 and the back plate 103 are bonded and fixed by the adhesive layer 102.

[0065] The 101 hitting blade is made of Arnitel TPEE EL740.

[0066] The adhesive layer 102 is made of Chemlok 213;

[0067] The material of the backplate 103 is Arnitel TPEE EM400.

[0068] This example also provides a method for preparing the striking panel of a golf ball head, the steps of which are as follows:

[0069] S1, Treatment of the striking plate 101:

[0070] S11. EL740 sheets are obtained by injection molding using Arnitel TPEE EL740 plastic particles; the temperature of the injection molding machine barrel from the feeding point to the nozzle is divided into four sections: the first section temperature is 265-270℃, the second section temperature is 260-265℃, the third section temperature is 255-260℃, and the fourth section temperature is 250-255℃.

[0071] S12. Use 80# alumina sand to sandblast the surface of the EL740 board (adhesive layer contact surface);

[0072] S13. Plasma cleaning: The EL740 board after step S12 is subjected to plasma cleaning at 900-950W.

[0073] S2. Using a 0.5mm nozzle spray gun, Chemlok 213 is evenly sprayed onto one side of the ball-hitting plate 101 after step S1 to form an adhesive layer 102. The mixture is then baked at 100℃ for 40 minutes to obtain the composite part. Before injection molding, the composite part is placed in a 50℃ heat preservation box.

[0074] S3, Injection Molding: Take the composite part obtained in step S2 out of the heat preservation box and put it into the injection molding machine. Inject Arnitel TPEE EM400 onto the adhesive layer 102 of the composite part to form the back plate 103, which is the golf head hitting panel.

[0075] The temperature of the injection molding machine barrel from the feeding point to the nozzle is divided into four sections: the first section temperature is 245-250℃, the second section temperature is 235-240℃, the third section temperature is 225-230℃, and the fourth section temperature is 215-220℃.

[0076] Comparative Example 1

[0077] This example provides a golf head striking panel, which consists of a striking plate 101, an adhesive layer 102, and a back plate 103 arranged in sequence; the striking plate 101 and the back plate 103 are bonded and fixed by the adhesive layer 102.

[0078] The material of the 101 striking plate is aluminum alloy 7075;

[0079] The adhesive layer 102 is made of Dynasilan Glymo (adhesive additive);

[0080] The material of the backplate 103 is Arnitel TPEE EM550.

[0081] This example also provides a method for preparing a golf ball head striking panel, which is basically the same as that in Example 1, except that step S2 is different, as follows:

[0082] S2. Immerse the batting plate 101 treated in step S1 in Dynasilan Glymo for 5 seconds, then remove it and let it air dry naturally. Place the composite part in a 50°C incubator before injection molding.

[0083] Comparative Example 2

[0084] This example provides a golf head striking panel, which consists of a striking plate 101, an adhesive layer 102, and a back plate 103 arranged in sequence; the striking plate 101 and the back plate 103 are bonded and fixed by the adhesive layer 102.

[0085] The material of the 101 striking plate is aluminum alloy 7075;

[0086] The adhesive layer 102 is made of 3M DP420;

[0087] The material of the backplate 103 is Arnitel TPEE EM550.

[0088] This example also provides a method for preparing a golf ball head striking panel, which is basically the same as that in Example 1, except that step S2 is different, as follows:

[0089] S2. Apply 3M DP420 to the surface of the hitting plate 101 after step S1 with a brush, let it stand for 5 minutes to obtain the composite part; place the composite part in a 50℃ insulated box before injection molding.

[0090] Comparative Example 3

[0091] This example provides a golf head striking panel, which consists of a striking plate 101, an adhesive layer 102, and a back plate 103 arranged in sequence; the striking plate 101 and the back plate 103 are bonded and fixed by the adhesive layer 102.

[0092] The material of the 101 striking plate is aluminum alloy 7075;

[0093] The adhesive layer 102 is made of Chemlok 213;

[0094] The material of the backplate 103 is Arnitel TPEE EM550.

[0095] This example also provides a method for preparing a golf ball head striking panel, which is basically the same as that in Example 1, except that step S2 is omitted.

[0096] Comparative Example 4

[0097] This example provides a golf head striking panel, which consists of a striking plate 101, an adhesive layer 102, and a back plate 103 arranged in sequence; the striking plate 101 and the back plate 103 are bonded and fixed by the adhesive layer 102.

[0098] The material of the 101 striking plate is aluminum alloy 7075;

[0099] The adhesive layer 102 is made of Chemlok 213;

[0100] The material of the backplate 103 is Arnitel TPEE EM550.

[0101] This example also provides a method for preparing a golf ball head striking panel, which is basically the same as that in Example 1, except that step S12 is omitted.

[0102] Comparative Example 5

[0103] This example provides a golf head striking panel, which consists of a striking plate 101, an adhesive layer 102, and a back plate 103 arranged in sequence; the striking plate 101 and the back plate 103 are bonded and fixed by the adhesive layer 102.

[0104] The material of the 101 striking plate is aluminum alloy 7075;

[0105] The adhesive layer 102 is made of Chemlok 213;

[0106] The material of the backplate 103 is Arnitel TPEE EM550.

[0107] This example also provides a method for preparing a golf ball head striking panel, which is basically the same as that in Example 1, except that step S13 is omitted.

[0108] The golf head striking panel prepared by this process has cracks at the glue inlet, where the back plate 103 and the striking plate 101 are separated.

[0109] Detection example

[0110] 1. Two batches of golf ball head striking panels were prepared using the preparation methods described in Examples 1-2. Fifty pieces were randomly selected from each batch, and the flatness of the golf ball head striking panels was tested using a flatness tester.

[0111] The test results are shown in Table 1.

[0112] Table 1

[0113]

[0114]

[0115]

[0116] The golf head striking panel prepared by the method of Example 1 exhibits good dimensional stability, with a flatness range of -0.02 mm to 0.02 mm, meeting the specifications. The test results of the golf head striking panel prepared by the method of Example 2 are similar to those of Example 1.

[0117] 2. Test the bonding between the adhesive layer of the golf ball head striking panel and the striking plate obtained in Examples 1-2 and Comparative Examples 1-2.

[0118] Test results are as follows Figure 1 As shown.

[0119] In Comparative Example 1, there was obvious delamination between the adhesive layer and the hitting plate of the golf ball head, indicating poor adhesion. The second polyurethane elastomer shrank and deformed, resulting in an uneven hitting plate surface. Comparative Example 2 showed similar results to Comparative Example 1.

[0120] In Example 1, there was no delamination between the adhesive layer and the hitting plate, and the bond was tight. The test results for Example 2 were similar to those for Example 1.

[0121] 3. Test the maximum force (F1) of the separation between the striking plate and the backplate of the golf ball head striking face prepared by the preparation methods of Examples 1 and Comparative Examples 3-4.

[0122] Cyclic testing: The golf ball head striking panels prepared by the methods of Example 1 and Comparative Examples 3-4 were sequentially placed at -40℃ for 20 min, at 16℃ for 30 min, at 93.3℃ for 60 min, and at 32℃ for 30 min, for a total of 3 cycles. The state of the golf ball head striking panels after the cycles was observed, and the maximum force (F2) separating the striking plate from the backplate was measured.

[0123] At least three test samples should be taken, and the average value of the results should be used.

[0124] The test results are shown in Table 2.

[0125] Table 2

[0126]

[0127] The golf head striking face prepared by the method of Example 1 exhibits strong bonding between the striking plate and the backplate, and shows no deformation, cracking, or delamination after high and low temperature cycling, while also demonstrating excellent adhesion. In contrast, the golf head striking faces prepared by the methods of Comparative Examples 3 and 4 exhibit poor bonding between the striking plate and the backplate.

[0128] 4. The golf ball head striking surface prepared by the method in Example 1 was subjected to a shelling test at a shelling speed of 35 mph for a total of 1500 shellings. After 0, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 750, 1000, 1250, and 1500 shellings, the flatness of the golf ball head striking surface was tested using a shelling test machine, and the change in the center of the golf ball head striking surface was evaluated.

[0129] The test results are shown in Table 3.

[0130] Table 3

[0131]

[0132]

[0133] The golf club head striking panel prepared by the method of Example 1 showed no abnormal noise before and after testing. After 1500 impacts, the center concavity of the golf club head striking panel changed by 0.01 mm, while there was no change near the TOE. The test results of the golf club head striking panel prepared by the method of Example 2 were similar to those of Example 1.

[0134] The embodiments of the present invention have been described in detail above with reference to the examples. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method for preparing a golf ball head striking panel, characterized in that, The golf ball head striking panel includes a striking plate, an adhesive layer, and a back plate arranged sequentially; the striking plate is made of metal or a first polyurethane elastomer; the adhesive layer is made of Chemlok 213; and the back plate is made of a second polyurethane elastomer. The preparation method includes the following steps: S1. Perform plasma cleaning on the striking plate; S2. Apply Chemlok 213 to the hitting plate after step S1, and heat treat it at 90℃~110℃ to form an adhesive layer, thereby obtaining a composite part; S3. The second polyurethane elastomer is injection molded onto the adhesive layer to obtain the golf ball head hitting panel.

2. The preparation method according to claim 1, characterized in that, When the material of the striking plate is metal, step S1 further includes at least one of ultrasonic cleaning and laser cleaning of the striking plate; And / or, when the material of the striking plate is a first polyurethane elastomer, step S1 further includes sandblasting the striking plate.

3. The preparation method according to claim 2, characterized in that, The conditions for ultrasonic cleaning include: a temperature of 75℃~85℃ and an ultrasonic time of 2~6min.

4. The preparation method according to claim 2, characterized in that, The conditions for laser cleaning include: laser beam movement speed of 2500mm / s to 3000mm / s, frequency of 60kHz to 70kHz, and power of 55W to 65W.

5. The preparation method according to claim 2, characterized in that, The sand used in the sandblasting process includes 80# alumina sand.

6. The preparation method according to claim 1, characterized in that, The power of the plasma cleaning is 900-950W.

7. The preparation method according to claim 1, characterized in that, The metal includes at least one of 7075 aluminum alloy, 6-4 titanium alloy, SUS304 stainless steel, SUS316 stainless steel, and 17-4 stainless steel. And / or, the grade of the first polyurethane elastomer includes at least one of EL740 and EL630; And / or, the grade of the second polyurethane elastomer includes at least one of EL460, EM550, and EM400.

8. The preparation method according to claim 1, characterized in that, The first polyurethane elastomer is used to form the hitting plate through injection molding; the injection molding method of the first polyurethane elastomer or the second polyurethane elastomer includes the following steps: Injection molding is performed using an injection molding machine; the temperature of the injection molding machine barrel from the feeding point to the nozzle is divided into four sections: the first section temperature is the melting temperature of the first polyurethane elastomer or the second polyurethane elastomer +40 to 75°C, the second section temperature is the first section temperature -5 to 15°C, the third section temperature is the second section temperature -0 to 15°C, and the fourth section temperature is the third section temperature -0 to 15°C.

9. The preparation method according to claim 1, characterized in that, Before proceeding with step S3, the composite component is always kept in an environment with a temperature of 50°C to 90°C.

10. The application of the preparation method according to any one of claims 1 to 9 in the preparation of golf ball heads.

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