PVC (polyvinyl chloride) ball head with higher fitting property

Abstract

The utility model discloses a PVC (polyvinyl chloride) ball head with stronger fitting property, which comprises a ball head main body, a through hole is arranged in the middle of the ball head main body, the bottom of the ball head main body is fixedly connected with a base, the upper part of the ball head main body is communicated with the lower part of the base through the through hole, a cavity is arranged above the base, and the ball head main body is fixedly connected with the base through the cavity. The base is provided with a cavity, the cavity is communicated with the inner side of the through hole, a supporting thin layer is arranged on the outer side of the cavity, the diameter of the base is set to be larger than that of the bottom of the ball head body, and the diameter of the base is set to be 1.5-3.5 cm. In conclusion, the diameter of the cavity and the diameter of the base are set to be 1.5-3.5 cm, so that the fitting property and the roundness of the ball bladder can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ball bladder manufacturing, particularly to a PVC ball head with stronger adhesion. BACKGROUND

[0002] Ball bladder is the internal inflatable structure in ball games, mainly used for maintaining the shape and elasticity of the ball, and the roundness and strength of the ball bladder are directly related to the quality of the ball product. Therefore, improving the production quality of the ball bladder is the most important step in ball production. The slush process is a commonly used process in ball bladder production. After the ball head is fixed at the ball needle position of the ball body mold cavity, the ball bladder slurry is injected into the ball body mold cavity, and then the ball body mold cavity is placed in the slush furnace for heating, rotation and cooling. The slurry formed ball bladder is tightly combined with the ball head. Subsequently, the ball bladder is processed by inserting the ball nozzle, inflating, winding yarn and pasting skin. However, when the ball bladder inflates, the ball bladder near the ball head is more difficult to expand due to the resistance of the ball head, resulting in uneven thickness of the ball bladder, decreased roundness, and thus decreased adhesion in subsequent skin pasting steps. Therefore, in the technical field of ball bladder manufacturing, a PVC ball head capable of improving adhesion and ball bladder roundness is needed. SUMMARY

[0003] In view of the above prior art, the utility model provides a PVC ball head with stronger adhesion, and the main technical problem to be solved is how to improve the adhesion and the roundness of the ball bladder.

[0004] To achieve the above purpose, the technical scheme of the utility model embodiment is as follows:

[0005] A PVC ball head with stronger adhesion, comprising a ball head main body, a through hole is provided in the middle of the ball head main body, the bottom of the ball head main body is fixedly connected with a base, the through hole communicates the upper part of the ball head main body with the lower part of the base, a cavity is provided above the base, the cavity communicates with the inner side of the through hole, a supporting thin layer is provided outside the cavity, the diameter of the base is larger than that of the bottom of the ball head main body, and the diameter of the base is 1.5-3.5 cm.

[0006] Preferably, a plurality of micro convex points are arranged on the upper side of the supporting thin layer.

[0007] Preferably, the through hole is provided in a columnar structure, and the columnar structure has the same diameter from top to bottom.

[0008] Preferably, a horn-shaped structure is provided at the connection between the base and the ball head main body, one end of the horn-shaped structure with a larger diameter is arranged near one side of the base, and the through hole communicates with the lower part of the base through the horn-shaped structure.

[0009] Preferably, the lower surface of the base is provided with a plurality of micro-grooves, which are uniformly arranged around the horn-shaped structure.

[0010] Preferably, the ball head body comprises a ball head upper portion and a ball head lower portion, the ball head upper portion is provided in a cylindrical structure, the ball head lower portion is provided in a bell-shaped structure, and the ball head upper portion is fixedly connected with the ball head lower portion.

[0011] Preferably, the through hole is provided in a columnar structure, and the columnar structure is provided with the same upper and lower diameters.

[0012] The ball head body and the base can cooperate to reduce the height when the ball head body and the base are matched, reduce the resistance to the ball bladder during expansion, and improve the roundness and fit of the ball bladder around the ball head.

[0013] Meanwhile, the diameter of the base 3 is 1.5-3.5 cm, which is smaller than the diameter of 4 cm or larger in the conventional technology, can effectively reduce the resistance of the base 3 to the expansion and contraction of the ball bladder, and can further improve the fit and roundness of the ball bladder.

[0014] In summary, the cavity and the base with a diameter of 1.5-3.5 cm can effectively improve the fit and roundness of the ball bladder. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a structural schematic view of a PVC ball head with stronger fit according to an embodiment of the present application;

[0016] Figure 2 FIG. 2 is a structural schematic view of a PVC ball head support thin layer in a stretched state according to an embodiment of the present application;

[0017] Figure 3 FIG. 3 is a structural schematic view of a PVC ball head bottom with stronger fit according to an embodiment of the present application;

[0018] Figure 4 FIG. 4 is a sectional view of a PVC ball head with stronger fit according to an embodiment of the present application;

[0019] DESCRIPTION OF THE DRAWINGS

[0020] 1, ball head body; 2, through hole; 3, base; 4, cavity; 5, support thin layer; 6, micro convex point; 7, columnar structure; 8, horn structure; 9, micro groove; 10, upper part of ball head; 11, lower part of ball head. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model is further described in detail below in combination with the drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used in the present document have the same meaning as understood by those skilled in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. In the following description, the expression "some embodiments" describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0022] Embodiment 1

[0023] Referring to the drawings Figures 1-4 , the application provides a PVC ball head with better fit, comprising a ball head body 1, a through hole 2 is arranged in the middle of the ball head body 1, the bottom of the ball head body 1 is fixedly connected with a base 3, the through hole 2 communicates the upper part of the ball head body 1 with the lower part of the base 3, a cavity 4 is arranged above the base 3, the cavity 4 communicates with the inner side of the through hole 2, and a support thin layer 5 is arranged outside the cavity 4. The cavity 4 and the support thin layer 5 are arranged, so that when the ball bladder inflates and expands, the ball head body 1 and the base 3 are subjected to radial tension, and then the support thin layer 5 bends outward, the cavity 4 is compressed, and the ball head body 1 at the upper part of the cavity 4 and the ball head body 1 and the base 3 at the lower part of the cavity 4 are close to each other, so that when the ball bladder expands and the thickness becomes thin, the ball head body 1 and the base 3 can cooperate to reduce the height, reduce the resistance to the ball bladder when it expands, and improve the roundness and fit of the ball bladder around the ball head. The diameter of the base 3 is greater than the diameter of the bottom of the ball head body 1, and the diameter of the base 3 is 1.5-3.5 cm. In this embodiment, the diameter of the base 3 is 2 cm, which is smaller than the commonly used 4 cm or larger diameter base 3 in the prior art, which can effectively reduce the resistance of the base 3 to the expansion and contraction of the ball bladder, and further improve the fit and roundness of the ball bladder.

[0024] Specifically, the upper surface of the support thin layer 5 is provided with a plurality of micro convex points 6, which are uniformly arranged on the outer side of the support thin layer 5. The micro convex points 6 make the ball bladder and the support thin layer 5 more closely connected after the heating, rotating and cooling treatment in the mold, avoid the support thin layer 5 being stretched and the ball bladder being disconnected, and improve the reliability.

[0025] Specifically, the through hole 2 is provided in a columnar structure 7, and the columnar structure has the same diameter from top to bottom. The columnar structure of the through hole 2 enables the ball nozzle to be more smoothly mounted on the ball head.

[0026] Embodiment 2

[0027] Referring to the accompanying drawings Figures 1-4 The difference between the embodiment and the embodiment 1 is that the bottom 3 is provided with a horn-shaped structure 8 at the connection with the ball head body 1, the horn-shaped structure 8 has a larger diameter at one end close to the bottom 3, and the through hole 2 is communicated with the lower side of the bottom 3 through the horn-shaped structure 8. The horn-shaped structure 8 enables the air nozzle to be more conveniently inserted and fixed when mounted on the ball head, and improves the reliability of the device.

[0028] Specifically, the lower surface of the bottom 3 is provided with a plurality of micro concave grooves 9, which are uniformly arranged around the horn-shaped structure 8. The micro concave grooves 9 can improve the firmness when the bottom 3 is adhered to an external structure, and improve the reliability of the device.

[0029] Specifically, the ball head body 1 includes a ball head upper part 10 and a ball head lower part 11, the ball head upper part 10 is provided in a cylindrical structure, the ball head lower part 11 is provided in a bell-shaped structure, and the ball head upper part 10 is fixedly connected with the ball head lower part 11. The bell-shaped structure can strengthen the structural strength of the ball head body 1 through the ball head lower part 11, and the cylindrical structure of the ball head upper part 10 can make the air nozzle more firmly connected and mounted.

[0030] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A PVC ball head with better fit, comprising a ball head body (1), wherein a through hole (2) is provided in the middle of the ball head body (1), the bottom of the ball head body (1) is fixedly connected to a base (3), and the through hole (2) connects the upper part of the ball head body (1) to the lower part of the base (3), characterized in that, The base (3) is provided with a cavity (4) above, the cavity (4) is communicated with the inside of the through hole (2), the outside of the cavity (4) is provided with a support thin layer (5), the diameter of the base (3) is set to be larger than the diameter of the bottom of the ball head body (1), the diameter of the base (3) is set to be 1.5-3.5 cm.

2. A PVC ball joint with better conformability as claimed in claim 1, wherein The support thin layer (5) is provided with a plurality of micro convex points (6) on the upper, the micro convex points (6) are uniformly arranged on the outside of the support thin layer (5).

3. The more conformable PVC bulb as claimed in claim 1, wherein, The through hole (2) is provided with a columnar structure (7), the columnar structure (7) is provided with the same diameter from top to bottom.

4. The more conformable PVC bulb as claimed in claim 1, wherein, The connection between the base (3) and the ball head body (1) is provided with a horn structure (8), one end of the horn structure (8) with larger diameter is arranged on the side close to the base (3), the through hole (2) is communicated with the lower of the base (3) through the horn structure (8).

5. The more conformable PVC bulb as claimed in claim 4, wherein, The lower surface of the base (3) is provided with a plurality of micro concave grooves (9), the micro concave grooves (9) are uniformly arranged around the horn structure (8).

6. The more conformable PVC bulb as claimed in claim 1, wherein, The ball head body (1) comprises a ball head upper part (10) and a ball head lower part (11), the ball head upper part (10) is provided with a cylindrical structure, the ball head lower part (11) is provided with a bell-shaped structure, the ball head upper part (10) is fixedly connected with the ball head lower part (11).

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