Plate-type racket manufacturing method

Abstract

The invention provides a plate-type racket manufacturing method, which comprises a material preparation step, a classification step, a heat insulation step, a cooling step and a bonding step, in the material preparation step, a plurality of processing components are prepared; in the classification step, the plurality of processing assemblies are classified into a pre-heat-insulation processing assembly and a non-heat-insulation processing assembly according to a heating characteristic and a pressurizing characteristic of the composition materials of the processing assemblies. And a heat insulation step: performing heat insulation temperature rise on the pre-heat-insulation processing assembly according to material characteristics to form a heat-insulated processing assembly. And a cooling step: cooling the heat-insulated and processed component to normal temperature. And a bonding step of connecting the heat-insulated processed component and the non-heat-insulated processed component by cold bonding. Therefore, material degradation / deterioration caused by consistent processing is avoided through classified processing, the quality of the plate-type racket is improved, and the performance of the plate-type racket is ensured.

Description

Technical Field

[0001] This invention relates to the field of rackets, and more particularly to a method for manufacturing rackets using a classification-based processing method. Background Technology

[0002] Paddleboards are suitable for various ball sports, such as pickleball paddles, table tennis paddles, or beach paddles. Different paddleboards can be used for different ball sports.

[0003] In recent years, rackets have gradually adopted lighter fiber materials to achieve weight reduction, with fiber materials such as glass fiber or carbon fiber being the preferred choice. However, different parts have different material choices, and fiber material is only one of them. For the combination of different materials, the current manufacturing method for rackets is to first assemble the various parts together and then put them into a mold for heating and / or pressurization.

[0004] Please refer to US Patent Publication No. US20180104555A1, taking the honeycomb structure as an example of a core material for the plate. First, look at the diagram. Figure 5 The instruction manual paragraph

[0007] mentions that the core component of the board is plastic, followed by the diagram. Figure 5 The instruction manual paragraph

[0009] mentions that the frame of the plate is composed of carbon fiber.

[0005] Plastics and carbon fibers have different material properties. If they are put into a mold together and subjected to the same heating and / or pressure, the plastics, which are heat-sensitive materials, will suffer from degradation or deterioration due to overheating, affecting the final core quality. This will impact the criteria for quality assessment, such as stiffness, deflection, buckling, and coefficient of recovery (COR).

[0006] Once affected, it will only make it harder to control how long the ball stays on the racket and also harder to control the spin force of the racket on the ball.

[0007] In view of this, the inventors of this case have made great efforts to study and finally developed the method for manufacturing the racket of this invention. Summary of the Invention

[0008] The purpose of this invention is to provide a method for manufacturing a racket to solve the problems mentioned in the prior art.

[0009] This invention provides a method for manufacturing a racket, comprising a material preparation step, a sorting step, a heat insulation step, a cooling step, and a bonding step. In the material preparation step, a plurality of processed components for a racket are prepared. In the sorting step, the plurality of processed components are classified into a pre-insulated component and a non-insulated component based on a heating characteristic and a pressurizing characteristic of their constituent materials. The pre-insulated component has a substrate and a fiber layer covering the substrate. In the heat insulation step, a mold is prepared, the pre-insulated component is placed into a cavity of the mold, and a heat insulation heating is applied to the pre-insulated component according to its material characteristics to form an insulated component. The fiber layer of the insulated component is adhered to the substrate. In the cooling step, the insulated component is cooled to room temperature. In the bonding step, the insulated component and the non-insulated component are cold-bonded together without the use of heat.

[0010] In one embodiment of the present invention, the plurality of processing components includes a plate and a gripper. The plate has a core, a frame and two surface layers. The frame is disposed around the core. The two surface layers are spaced apart and respectively assembled on the core and the frame on two sides of the plate. The gripper is formed from the bottom side of the frame of the plate.

[0011] In a further embodiment of the invention, the frame is classified as the pre-insulated processing component, the base material of the frame is composed of polyethylene or ethylene-vinyl acetate copolymer, the fiber layer of the frame is composed of carbon fiber or glass fiber, and the two surface layers are classified as the pre-insulated processing component, the two surface layers being composed of carbon fiber or glass fiber.

[0012] In one embodiment of the invention, the non-insulated processing component is a heat-sensitive material, which is a plastic, polyethylene, or ethylene-vinyl acetate copolymer.

[0013] In a further embodiment of the present invention, the plate body is a rib structure, the core has a first component, the first component is classified as the pre-insulated processing component, the frame is disposed around the first component, the substrate of the first component is composed of rigid plastic or rigid foam, and the fiber layer of the first component is composed of carbon fiber or glass fiber.

[0014] In a further embodiment of the present invention, the plate is a honeycomb structure, the core has a first component, the first component is classified as the non-insulating processing component, the frame is disposed around the first component, and the first component is made of plastic.

[0015] In a further embodiment of the invention, the plate is a centralized core having a first component, which is classified as the pre-insulated processing component. The substrate of the first component is composed of rigid plastic or rigid foam, and the fiber layer of the first component is composed of carbon fiber or glass fiber. The core has a second component disposed between the frame and the first component, which is classified as the non-insulated processing component and is composed of polyethylene or ethylene-vinyl acetate copolymer.

[0016] In a further embodiment of the invention, the plate is a centralized core having a first component, which is classified as a non-insulated processing component and is composed of plastic. The core has a second component disposed between the frame and the first component, which is classified as a non-insulated processing component and is composed of polyethylene or ethylene-vinyl acetate copolymer.

[0017] In one embodiment of the invention, the insulation step involves applying the insulation heating and forming the insulated component using an air-blowing molding process.

[0018] In one embodiment of the invention, the mold for the insulation step has an upper mold and a lower mold, which are combined to apply pressure and form a cavity with a closed space. The upper mold has a heating element and the lower mold has a heating element.

[0019] Therefore, the present invention provides a method for manufacturing rackets with a racket type, which avoids material degradation and / or deterioration caused by uniform processing through classified processing, thereby improving the quality and ensuring the performance of rackets.

[0020] The above description is only used to illustrate the problem to be solved by the present invention, the technical means to solve the problem, and the effects produced. The specific details of the present invention will be described in detail in the following embodiments and related drawings. Attached Figure Description

[0021] Figure 1 This is a flowchart of the manufacturing method of the plate racket of the present invention.

[0022] Figure 2 This is a schematic diagram of the material preparation steps for the centralized core with a rib structure used in the manufacturing method of the plate racket of the present invention.

[0023] Figure 3 This is a schematic diagram of the heat insulation steps of the centralized core with a rib structure in the manufacturing method of the plate racket of the present invention.

[0024] Figure 4 This is a first schematic diagram of the bonding step of the centralized core with rib structure in the manufacturing method of the plate racket of the present invention.

[0025] Figure 5 This is a second schematic diagram of the bonding step of the centralized core with rib structure in the manufacturing method of the plate racket of the present invention.

[0026] Figure 6 This is a first schematic diagram of the bonding step of the centralized core with a honeycomb structure in the manufacturing method of the plate racket of the present invention.

[0027] Figure 7 This is a second schematic diagram of the bonding step of the centralized core with a honeycomb structure in the manufacturing method of the plate racket of the present invention.

[0028] Explanation of icon numbers:

[0029] Material preparation step S1; sorting step S2; heat insulation step S3; cooling step S4; bonding step S5; Peak racket 10; plate 20; core 21; first component 21A, 21A'; second component 21B; frame 22; surface layer 23; grip 30. Detailed Implementation

[0030] To provide a better understanding of the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings:

[0031] This invention provides a method for manufacturing a racket, please also refer to... Figures 1 to 7 As shown, the racket of the present invention is based on a pickleball paddle 10 as an example, but it can also be applied to rackets for different ball sports, such as table tennis paddles or beach paddles.

[0032] Please also refer to Figures 1 to 7 This invention provides a method for manufacturing a racket, comprising:

[0033] Material preparation step S1:

[0034] Material preparation step S1: Prepare multiple machined components for a single-plate racket. Please refer to [link / reference]. Figures 2-7 As shown, taking the Peak racket 10 as an example, this plurality of processed components includes a blade 20 and a grip 30. The blade 20 has a core 21, a frame 22, and two surface layers 23. The grip 30 is formed from the bottom side of the frame 22 of the blade 20 along a direction Y, and can be extended or connected. The direction Y is for reference only and is not a limitation.

[0035] The core 21 of the plate 20 may further be selected from one or a combination of a rib structure and a honeycomb structure, but is not limited thereto. For reference... Figures 2-5 The rib structure, and also referencing US Patent Publication No. US10377093B2 Figure 7 The technical content and description thereof are incorporated herein by reference. Additionally, please refer to... Figures 6-7 The honeycomb structure, and also referencing US Patent Publication No. US20180104555A1 Figure 1 As illustrated in the patent and its technical content, the invention is incorporated herein by reference. The foregoing patent is for illustrative purposes only and is not intended to limit the core 21.

[0036] The core 21 of the board 20 may further be selected from one or a combination of a centralized core and segmented cores, but is not limited thereto. For more details, please refer to... Figures 2-7 The centralized core, while also referencing Taiwan patent application number TW112126434. Figure 2 The technical content and description thereof are incorporated herein by reference. Additionally, for a segmented core, please refer to Taiwan Patent Application No. TW112126435. Figure 2 As illustrated in the patent description, the invention is incorporated herein by reference. The foregoing patent is for illustrative purposes only and is not intended to limit the core 21. The centralized core and the segmented core are variations of the rib structure.

[0037] Please refer to Figures 2-7 As shown, the plate body 20 of the present invention adopts a centralized core with a rib structure or a honeycomb structure as an example.

[0038] Classification step S2:

[0039] The classification step S2 follows the material preparation step S1. Each processing component is classified into a pre-insulated processing component and a non-insulated processing component based on a heating characteristic (such as temperature and time) and a pressurization characteristic (such as pressure) of its constituent material (such as carbon fiber).

[0040] The pre-insulated processing component has a substrate and a fiber layer covering the substrate. The fiber layer can be cloth-like or sheet-like, and the fiber layer composition can be carbon fiber or glass fiber.

[0041] Frame 22 is classified as a pre-insulated component. The base material of frame 22 may be polyethylene (PE) or ethylene-vinyl acetate copolymer (EVA), and the fiber layer of frame 22 may be carbon fiber or glass fiber.

[0042] Non-insulated components are heat-sensitive materials, such as plastics, polyethylene, and ethylene-vinyl acetate copolymers.

[0043] Although frame 22 uses heat-sensitive material as the base material, the base material is covered with a fiber layer, and the insulation object is the fiber layer, so it is classified as a pre-insulated component.

[0044] One type, "ethylene-vinyl acetate copolymer," is commonly found in centralized cores with rib structures (please refer to...). Figures 2-5 (As shown). Core 21 has a first component 21A, which is classified as a pre-insulated component. The substrate of the first component 21A may be rigid plastic or rigid foam, and the fiber layer of the first component 21A may be carbon fiber or glass fiber. Core 21 also has a second component 21B disposed between frame 22 and the first component 21A. The second component 21B is classified as a non-insulated component, and polyethylene or ethylene-vinyl acetate copolymer is used in the second component 21B. Although the first component 21A uses a heat-sensitive material as its substrate, the substrate is covered by a fiber layer, and the insulation object is the fiber layer; therefore, it is classified as a pre-insulated component.

[0045] Another type of "plastic" is commonly found in centralized core structures using a honeycomb structure (see reference 21). Figures 6-7 As shown), the difference lies in the first component 21A and the first component 21A', the first component 21A' adopting a honeycomb structure.

[0046] The core 21 mentioned above can be a first component 21A and a second component 21B, or a first component 21A' and a second component 21B. Alternatively, only the first components 21A and 21A' can be used, increasing the area of ​​the first components 21A and 21A' to fill the area of ​​the original second component 21B, so that the frame 22 is located around the first components 21A and 21A'.

[0047] The second surface layer 23 is classified as a pre-insulated processing component. The second surface layer 23 is composed of carbon fiber or glass fiber, but is not limited to these.

[0048] Adiabatic step S3:

[0049] The adiabatic heating step S3 follows the classification step S2. The adiabatic heating step S3 applies an adiabatic heating to form the material. The forming can be done by blow molding, which can also be called air bladder, bladder method or bladder. The forming can also be called molding, compression molding or molding.

[0050] In the insulation step S3, prepare a mold 40, place the pre-insulated processing component into a cavity 41 of the mold 40, apply insulation and heat up to form it.

[0051] Please refer to Figure 3Mold 40, and also referencing Taiwan Patent Application No. TW100107245. Figure 3 As illustrated in the technical description and incorporated herein by reference, mold 40 typically has an upper mold and a lower mold, which are joined (in one embodiment of the joining is clamping) to apply pressure and form a cavity 41 with a closed space. A heating element is provided inside the upper mold and / or lower mold for direct heating and adiabatic temperature rise. The aforementioned patent is for illustrative purposes only and is not intended to limit mold 40. Alternatively, the upper mold and / or lower mold may be indirectly heated through a heating element for adiabatic temperature rise.

[0052] The pre-insulated component is heat-treated according to its material properties to form an insulated component, and the fiber layer of the insulated component is then covered with a substrate.

[0053] Non-insulated components do not have a fiber layer and do not undergo insulation step S3, nor are they subjected to insulation heating. Furthermore, although the present invention uses the Peak racket 10 as an example, table tennis racket components or beach racket components with a fiber layer, classified as pre-insulated components, can also undergo insulation step S3 and be subjected to insulation heating.

[0054] The first component 21A, frame 22, and second surface layer 23 are all classified as pre-insulated processing components. Although their base materials may be different or the same, they can be selected to perform the insulation step S3 together, provided that the heating and pressurization characteristics corresponding to their material properties allow it. Alternatively, the insulation step S3 can be performed separately, provided that the heating and pressurization characteristics corresponding to their material properties are taken into consideration. However, this method is not limited to the first component 21A, frame 22, and second surface layer 23; other pre-insulated processing components can also refer to the aforementioned approach.

[0055] Cooling step S4:

[0056] Cooling step S4 follows insulation step S3, cooling the insulated components to room temperature.

[0057] Bonding step S5:

[0058] The bonding step S5 follows the cooling step S4, whereby any two of the plurality of components are joined by cold bonding without the use of heat. One embodiment of cold bonding involves using an adhesive to join any two of the plurality of components. These plurality of components can be either heat-insulated or non-heat-insulated components, or a combination thereof.

[0059] After the Peak racket 10 of the present invention is glued together (please refer to...), Figure 5 , Figure 7As shown, the frame 22 is located around the core 21, and the two surface layers 23 are respectively arranged on the core 21 and the frame 22 on both sides of the plate 20 at intervals.

[0060] The terms "first" and "second" used in this invention are for distinguishing purposes and do not represent a chronological order.

[0061] In summary, this invention provides a method for manufacturing a racket. The multiple processed components are categorized into pre-insulated and non-insulated components based on their material properties and corresponding heating and pressurization characteristics. The pre-insulated components are then subjected to adiabatic heating based on their material properties to form the insulated components. This categorized processing avoids material degradation and / or deterioration caused by uniform processing, thereby improving the quality and performance of the racket. In practical operation, this method helps the operator control the time the ball remains on the racket and also allows for better control of the racket's spin on the ball.

[0062] Finally, the embodiments disclosed above are not intended to limit the present invention. Any person skilled in the art should be able to make various modifications and refinements without departing from the spirit and scope of the present invention, and all such modifications and refinements are protected within the scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A method for manufacturing a racket, characterized in that: Include: The first step is to prepare multiple processed components for a racket. In a classification step, multiple processing components are classified into a pre-insulated processing component and a non-insulated processing component according to the heating and pressurizing characteristics of their constituent materials. The pre-insulated processing component has a substrate and a fiber layer covering the substrate. In the first heat insulation step, a mold is prepared, the pre-insulated processing component is placed into a cavity of the mold, and the pre-insulated processing component is subjected to an heat insulation heating according to the material properties to form an insulated processing component, and the fiber layer of the insulated processing component is attached to the substrate. A cooling step is performed to cool the heat-insulated component to room temperature; and A bonding step involves cold bonding the heat-insulated component and the non-heat-insulated component together without using heat.

2. The method for manufacturing a racket as described in claim 1, characterized in that, The multiple processing components include a plate and a gripper. The plate has a core, a frame and two surface layers. The frame is disposed around the core. The two surface layers are spaced apart and respectively assembled on the core and the frame on both sides of the plate. The gripper is formed from the bottom side of the frame of the plate.

3. The method for manufacturing a racket as described in claim 2, characterized in that, The frame is classified as the pre-insulated processing component. The base material of the frame is composed of polyethylene or ethylene-vinyl acetate copolymer. The fiber layer of the frame is composed of carbon fiber or glass fiber. The two surface layers are classified as the pre-insulated processing component. The two surface layers are composed of carbon fiber or glass fiber.

4. The method for manufacturing a racket as described in claim 1, characterized in that, The non-insulated processing component is a heat-sensitive material, which is plastic, polyethylene, or ethylene-vinyl acetate copolymer.

5. The method for manufacturing a racket as described in claim 2, characterized in that, The plate is a rib structure, the core has a first component, the first component is classified as the pre-insulated processing component, the frame is disposed around the first component, the base material of the first component is composed of rigid plastic or rigid foam, and the fiber layer of the first component is composed of carbon fiber or glass fiber.

6. The method for manufacturing a racket as described in claim 2, characterized in that, The plate has a honeycomb structure, the core has a first component, the first component is classified as the non-thermal-insulating processing component, the frame is disposed around the first component, and the first component is made of plastic.

7. The method for manufacturing a racket as described in claim 2, characterized in that, The panel is a centralized core, which has a first component, which is classified as the pre-insulated component. The base material of the first component is composed of rigid plastic or rigid foam, and the fiber layer of the first component is composed of carbon fiber or glass fiber. The core has a second component disposed between the frame and the first component, which is classified as the non-insulated component. The second component is composed of polyethylene or ethylene-vinyl acetate copolymer.

8. The method for manufacturing a racket as described in claim 2, characterized in that, The plate is a centralized core, which has a first component, which is classified as a non-insulated processing component and is composed of plastic. The core has a second component disposed between the frame and the first component, which is also classified as a non-insulated processing component and is composed of polyethylene or ethylene-vinyl acetate copolymer.

9. The method for manufacturing a racket as described in claim 1, characterized in that, The insulation step involves applying the insulation temperature increase and then using an air-blowing molding process to form the already insulated component.

10. The method for manufacturing a racket as described in claim 1, characterized in that, The mold in the heat insulation step has an upper mold and a lower mold, which are combined to apply pressure and form a cavity with a closed space. The upper mold has a heating element and the lower mold has a heating element.

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