Pick bat with handle inner core structure and manufacturing method thereof

Abstract

The invention discloses a Pick bat with a handle inner core structure and a manufacturing method thereof, the Pick bat mainly comprises a bat surface and a handle formed at one end of the bat surface, a foam-formed core is arranged in the handle and has a shock-proof effect, the core is completely and stably attached to the interior of the handle, a rear sleeve is integrally formed at the tail end of the handle, and the rear sleeve is made of plastic. According to the present invention, the process of additionally assembling the rear sleeve can be reduced, the strength can be enhanced, the weight of the handle part can be reduced, the manufacturing is performed by heating foaming molding, the gas leakage phenomenon possibly occurring during the blowing molding can be avoided, and the stable production quality can be provided.

Description

Technical Field

[0001] The invention relates to a pickle paddle with a handle inner core structure and a manufacturing method thereof. Background Art

[0002] As is known, peak rackets made of carbon fiber are mainly made by air blowing, which is prone to air leakage, thus affecting the quality of the racket. Another well-known carbon fiber peak racket uses one-step foaming for the handle and the racket face, and its internal structure cannot provide shock absorption, so there is still room for improvement. Moreover, the rear cover structure of the handle of the well-known carbon fiber peak racket is fixed by external attachment, which adds extra weight to the racket, and the attached rear cover may also come off due to long-term use, temperature or impact.

[0003] Therefore, in order to address the problems existing in the above-mentioned well-known structures, developing an innovative structure that is more ideal and practical is what consumers are eagerly looking forward to, and it is also the goal and direction that related industries must strive to develop and break through. In view of this, the inventor, based on his many years of experience in manufacturing, developing and designing related products, has designed and carefully evaluated the above-mentioned goals in detail, and finally obtained a truly practical present invention. Summary of the invention

[0004] Therefore, the main purpose of the present invention is to provide a peak racket with a handle inner core structure and a manufacturing method thereof; the problem to be solved is that the handle and the racket face of the well-known carbon fiber material peak racket are both formed in one step, and have no shock-absorbing effect. Furthermore, the back cover structure of the handle of the well-known carbon fiber material peak racket is fixed by external installation, which not only adds extra weight to the entire racket, but also the strength after installation may have room for improvement.

[0005] The present invention provides a pickleball racket with a handle inner core structure, comprising:

[0006] A racket face comprising a fiber-reinforced composite material;

[0007] A handle is located at one end of the racket face and is integrated with the racket face. The handle includes a core and a shell. The core is a foamed body. The shell is made of fiber-reinforced composite material. The shell is coated on the periphery of the core and is tightly integrated with the core.

[0008] Preferably, the density of the core is 0.17 g / cm 3 ~0.9g / cm 3 .

[0009] Preferably, the handle has a rear sleeve at one end away from the racket face, and the width of the rear sleeve gradually expands toward the end away from the racket face.

[0010] Furthermore, the present invention also provides a method for manufacturing a peak racket having a handle inner core structure, which is used to manufacture the peak racket having the handle inner core structure, and the steps include:

[0011] A. Preparing the core: placing the foaming material in a core mold and heating and foaming it to form a core semi-finished product, wherein the foaming degree of the core semi-finished product is less than 80%;

[0012] B. Stacking the fiber materials: stacking the semi-finished core material and the semi-finished fiber yarn material together in a racket forming mold, so that the circumference of the semi-finished core material is covered by the semi-finished fiber yarn material;

[0013] C. Heating and molding: The racket molding mold is heated, and the core semi-finished product is re-foamed, so that the fiber yarn semi-finished product is heated and pressurized to form.

[0014] Among them, preferably, the racket forming mold has a handle forming mold cavity and a racket face forming mold cavity, the handle forming mold cavity is connected to the racket face forming mold cavity, and the core semi-finished product has a connecting end; in the fiber material stacking step, the fiber yarn semi-finished product is placed in the handle forming mold cavity and the racket face forming mold cavity, the core semi-finished product is placed in the handle forming mold cavity, and the connecting end faces the racket face forming mold cavity.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention discloses a pickle racket with a handle inner core structure, wherein the handle has an internal foam body, that is, a core formed by plastic foaming and has a shock-absorbing effect, and the core is completely and firmly attached to the inner wall surface of the chamber space of the shell, and a rear cover can be integrally formed at the end of the handle. In addition to reducing the procedure of assembling the rear cover in the manufacturing process, the strength can be increased and the weight of the handle can be reduced. The preformed core is also helpful in making a handle with a special shape, and the present invention is made by heating foaming, and will not cause leakage due to blow molding to affect the quality of the racket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a core mold diagram for making a peak racket.

[0018] Figure 2 It is a three-dimensional diagram of the semi-finished core product of the present invention.

[0019] Figure 3 It is a cross-sectional view of the semi-finished core product of the present invention.

[0020] Figure 4 It is a cross-sectional view of a semi-finished carbon fiber yarn coated core semi-finished product of the present invention.

[0021] Figure 5 The present invention is a racket forming mold diagram, which includes a racket face forming mold cavity and a handle forming mold cavity.

[0022] Figure 6 The utility model discloses a foaming molding diagram of a peak racket of the present invention, comprising a racket face and a handle.

[0023] Figure 7 yes Figure 6 Cross-section of the handle.

[0024] Figure 8 It is a flow block diagram of the manufacturing method of the present invention.

[0025] Description of Figure Numbers:

[0026] A-core mold; B-core cavity; 30-core semi-finished product; 31-connecting end; 32-semi-molded back cover; 40-fiber yarn semi-finished product; C-racket molding mold; D-racket face molding cavity; E-handle molding cavity; 30A-core; 40A-shell; 41A-chamber space; 50-racket face; 60-back cover; 70-handle. DETAILED DESCRIPTION

[0027] See also Figure 1 to Figure 7 The preferred embodiments of the pickle racket with a handle inner core structure of the present invention are shown in FIG. 1 , and these embodiments are for illustration only. The claims are not limited by these specific embodiments and descriptions but shall be subject to the claims. The pickle racket with a handle inner core structure of the present invention includes a racket face 50 and a handle 70.

[0028] The racket face 50 contains a fiber reinforced composite material, which can be made of the fiber reinforced composite material alone, or a fiber reinforced composite material combined with other materials such as plastic, rubber, metal or wood. The fiber reinforced composite material refers to a resin-impregnated fiber material that is formed by heating and pressurizing a fiber yarn semi-finished product, such as a carbon fiber composite material.

[0029] The handle 70 is located at the lower end of the racket face 50 and is integrated with the racket face 50. The handle 70 includes a shell 40A and a core 30A, wherein the end of the handle 70 is integrally formed with a rear cover 60, and a chamber space 41A is formed inside the shell 40A. The chamber space 41A completely accommodates a core 30A, and the core 30A is made of foam material, wherein the core 30A is completely and firmly attached to the inner wall surface of the chamber space 41A of the shell 40A. It should be noted that the core 30A in this embodiment is completely covered by the shell 40A, and the core 30A will not be exposed on the surface of the pickle racket. However, if the shell 40A only covers the peripheral surface of the core 30A, so that the upper end of the core 30A is combined with the racket face 50 at the connecting end 31, or the lower end of the core 30A is exposed from the lower end of the handle 70, it is not impossible.

[0030] Preferably, the density of the core 30A is 0.17 g / cm 3 ~0.9g / cm 3 .

[0031] See also Figure 1 to Figure 4 As shown in FIG. 1 , it is a schematic diagram of the manufacturing process of the handle. In the initial stage of manufacturing, a plurality of core mold cavities B are first set inside the core mold A, such as Figure 1 As shown, after placing the foam material in the core mold cavity B, the core mold A is heated, so that the foam material is foamed and formed, and the core mold cavity B forms a core semi-finished product 30. The core semi-finished product 30 is only foamed to a foaming degree of 30% to 80%. Preferably, the foaming degree of the core semi-finished product 30 is 50%. Figure 2 As shown, the core semi-finished product 30 has a connecting end 31 and a semi-formed rear sleeve portion 32 integrally formed at the end position of the core semi-finished product 30. Figure 3 and Figure 4 As shown, the surface of the core semi-finished product 30 is covered with one or more layers of fiber yarn semi-finished product 40. The fiber yarn semi-finished product 40 is soft before being heated and formed, and can be hardened and formed by thermoplasticization.

[0032] See also Figure 5 As shown, the core semi-finished product 30 of the coated fiber yarn semi-finished product 40 is further placed in a handle forming mold cavity E of a racket forming mold C. The mold is a structure that covers the upper and lower parts. The handle forming mold cavity E forms a racket face forming mold cavity D relative to the upper end. The racket face forming mold cavity D is heated to form the racket face semi-finished product containing the fiber yarn semi-finished product into a racket face 50, and the core semi-finished product 30 of the coated fiber yarn semi-finished product 40 in the handle forming mold cavity E is also simultaneously re-foamed and foamed to a foaming degree of 100%.

[0033] It should be noted that the molding of the fiber reinforced composite material preferably requires pressurization while heating. The molding of the racket face 50 can be done by adding foam material to the racket face semi-finished product, and it is suitable for simultaneous molding with the handle. However, it is not impossible to use gas pressurization or other methods instead of foam material in the racket face.

[0034] See also Figure 6 As shown, when the pickle racket formed by the racket molding mold C is completed and taken out, one end of the racket face 50 is integrated with the handle 70 having a complete foamed core, so that the handle 70 is combined with the racket face 50 at one time through the racket molding mold C and is heated and hardened into shape.

[0035] See also Figure 7 As shown, Figure 6 The cross-sectional view of the handle 70 is shown, wherein the handle 70 includes a core 30A and a shell 40A covered with an outer layer, the shell 40A is formed by heating and pressurizing a semi-finished fiber yarn material, and the pressure when forming the shell 40A comes from the re-foaming of the core 30A, so that the shell 40A and the core 30A are tightly combined after molding, and the handle 70 can have a shock-absorbing effect by virtue of the core 30A made of foam inside, and the core 30A is completely and firmly attached to the inner wall surface of the chamber space 41A of the shell 40A, and a rear cover 60 is integrally formed at the end of the handle 70, and the width of the rear cover 60 gradually expands toward the end away from the racket face 50, which can not only reduce the procedure of assembling the rear cover in the process, but also enhance the strength and reduce the weight of the handle 70.

[0036] See also Figure 8 As shown, the present invention also discloses a method for manufacturing a pickle paddle having a handle inner core structure, the steps of which include:

[0037] A. Prepare the core: prepare a core mold A, and form a core semi-finished product 30 in the core cavity B by placing and heating a thermoplastic foam material. The core semi-finished product 30 is foamed to less than 80%, for example, 50%. The core semi-finished product 30 is foamed to have a connecting end 31 and a semi-molded rear sleeve 32 integrally formed at the end of the core semi-finished product 30. The semi-molded rear sleeve 32 has a width that gradually expands toward the end.

[0038] B. Stacking fiber materials: The core semi-finished product and the fiber yarn semi-finished product are stacked together and placed in the racket forming mold. Specifically, the core semi-finished product 30 can be first covered with one or more layers of fiber yarn semi-finished products 40. The fiber yarn semi-finished products 40 are in a soft state before being heated and formed, and then placed together in the racket forming mold. The racket forming mold C has a handle forming mold cavity E and a racket face forming mold cavity D connected to the handle forming mold cavity E. The core semi-finished product 30 covered with the fiber yarn semi-finished product 40 is placed in the handle forming mold cavity E, and the connecting end is facing the racket face forming mold cavity D. At the same time, the pre-made racket face semi-finished product is also placed in the racket face forming mold cavity D, or the fiber yarn semi-finished products are directly stacked and placed in the racket face forming mold cavity D to prepare for making the handle and the racket face.

[0039] C. Heating and molding: The racket molding mold C is heated, and the fiber yarn semi-finished product begins to be molded by the heating. At the same time, the core semi-finished product 40 is re-foamed and molded to a foaming degree of 100% or close to 100%. The re-foamed core semi-finished product provides pressure to pressurize the fiber yarn semi-finished product, and finally the core semi-finished product is molded into the core, and the fiber yarn semi-finished product is molded into the shell. Since the shell is molded together with the racket face, the shell and the racket face are also combined into one.

[0040] Thus, the handle of the present invention has a shock-absorbing effect by containing a core 30A formed of a foam body inside, and the core 30A is completely and firmly attached to the inside of the shell, and a rear cover 60 is integrally formed at the end of the handle. In addition to reducing the procedure of assembling the rear cover in the manufacturing process, it can also increase the strength and reduce the weight of the handle 70.

[0041] In addition, when preparing the core, the core semi-finished product 30 can be used to pre-form the approximate structural shape required for the final handle, such as a semi-formed rear sleeve. After stacking the fiber materials, the fiber yarn semi-finished product naturally forms a gradually expanding end shape, and after being heated and formed, it has an integrally formed rear sleeve. The core semi-finished product provides a skeleton-like function, which helps to correctly arrange and shape the soft fiber yarn semi-finished product into a predetermined target structure, reduce production difficulty and improve the variability of the handle shape.

Claims

1. A peak racket with a handle inner core structure, characterized in that: include: A racket face comprising a fiber-reinforced composite material; A handle is located at one end of the racket face and is integrated with the racket face. The handle includes a core and a shell. The core is a foamed body. The shell is made of fiber-reinforced composite material. The shell is coated on the periphery of the core and is tightly integrated with the core.

2. The pickle paddle with a handle inner core structure as claimed in claim 1, characterized in that: The density of the core is 0.17 g / cm 3 ~0.9g / cm 3 .

3. The pickleball racket with a handle inner core structure as claimed in claim 1, characterized in that: The end of the handle away from the racket face is provided with a rear cover portion, and the width of the rear cover portion gradually expands toward the end away from the racket face.

4. A method for manufacturing a peak racket with a handle inner core structure, for manufacturing a peak racket with a handle inner core structure as claimed in any one of claims 1 to 3, characterized in that: The steps include: A. Preparing the core: placing the foaming material in a core mold and heating and foaming it to form a core semi-finished product, wherein the foaming degree of the core semi-finished product is less than 80%; B. Stacking the fiber materials: stacking the semi-finished core material and the semi-finished fiber yarn material together in a racket forming mold, so that the circumference of the semi-finished core material is covered by the semi-finished fiber yarn material; C. Heating and molding: The racket molding mold is heated, and the core semi-finished product is re-foamed, so that the fiber yarn semi-finished product is heated and pressurized to form.

5. The method for manufacturing a pickle paddle having a handle inner core structure according to claim 4, characterized in that: The racket forming mold has a handle forming mold cavity and a racket face forming mold cavity, the handle forming mold cavity is connected to the racket face forming mold cavity, and the core semi-finished product has a connecting end; in the fiber material stacking step, the fiber yarn semi-finished product is placed in the handle forming mold cavity and the racket face forming mold cavity, the core semi-finished product is placed in the handle forming mold cavity, and the connecting end faces the racket face forming mold cavity.

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