Rubber basketball with joint strip and stem lines

Abstract

The invention provides a joint strip stem line rubber basketball, which comprises a yarn liner for packaging a certain amount of gas and an outer skin for encapsulating the yarn liner, and is characterized in that the outer skin is an integral outer skin which is connected together, and a stem groove is formed in the outer skin; a stem strip is arranged in the stem groove, and the depth of the stem groove is larger than the thickness of the stem strip. The stability of stem line processing can be improved, and poor stem line processing is avoided; meanwhile, the arrangement of the stem strips can prevent the color of the stem lines from falling off relative to ink drawing of the stem lines.

Description

Technical Field

[0001] The invention relates to the technical field of basketball processing, in particular to a rubber basketball with stripes and stems. Background Art

[0002] Basketballs can usually be divided into laminated basketballs and rubber basketballs based on the processing method. Rubber basketballs usually have a gauze bladder and a seamlessly connected outer skin. The main raw material of the outer skin is rubber. In the prior art, each outer skin piece is usually placed on the inner surface of the sphere mold during processing, and the various outer skin pieces are connected as a whole through heating and vulcanization, and then bonded to the gauze bladder. The outer skin is then manually painted with stem lines to form the classic texture appearance of the basketball. The above-mentioned process of drawing stem lines consumes a lot of labor and is prone to product defects. In addition, the color of the drawn stem lines is often a monotonous single color. In situations where the lighting conditions are poor, it is difficult for athletes to see the trajectory of the ball's movement, which affects their performance. At the same time, the stem line color is drawn with ink pigments, which are easy to fall off during the beating process, losing the classic visual effect of the appearance. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a rubber basketball with striped stems and a manufacturing method.

[0004] The technical solution of the present invention is implemented as follows: the present invention provides a rubber basketball with striped stems, including a yarn bladder that encapsulates a certain gas, and an outer skin that encapsulates the yarn bladder, the outer skin is an integral outer skin connected together, and the outer skin is provided with a stem groove; the stem groove is provided with a stem strip, and the depth of the stem groove is greater than the thickness of the stem strip.

[0005] In order to further realize the present invention, the thickness of the stems is 0.8-1.0 mm, and they are made of a material selected from PU, PVC, TPU, and silica gel.

[0006] In order to further realize the present invention, the surface of the stems may be provided with a texture pattern.

[0007] In order to further realize the present invention, the grain pattern on the surface of the stems includes one or more of diamond grains, triangle grains, and wave grains.

[0008] The present invention also provides a method for manufacturing a striped rubber basketball, comprising the following steps:

[0009] The mold is heated and vulcanized to form a basketball skin and stem grooves on the surface of the yarn bladder;

[0010] The stem strips are set in the stem grooves by gluing;

[0011] The set stems are heated, vulcanized and shaped by the second mold.

[0012] In order to further realize the method of the present invention, the inner surface of the mold 1 is provided with a convex strip 1 corresponding to the stem groove; the surface of the mold 2 is provided with a convex strip 2 corresponding to the stem; the height of the convex strip 1 is greater than the height of the convex strip 2.

[0013] In order to further realize the present invention, the method further comprises the following steps: the stem strips are made of a material selected from the group consisting of PU, PVC, TPU and silica gel.

[0014] In order to further realize the present invention, in the method: the stem strips are glued and arranged in the stem grooves using water-based glue.

[0015] In order to further realize the present invention, the method also includes the following steps: laying out each leather piece and placing them in two hemispherical molds respectively, placing the yarn bladder in mold one and inflating it, closing the mold one and heating it, so that each leather piece is connected as a whole and combined with the yarn bladder.

[0016] In order to further realize the present invention, the method further comprises the following steps: the leather piece is formed by cutting the leather material through a mold.

[0017] Beneficial effects: Compared with the prior art, the present invention can improve the stability of stem line processing and avoid poor stem line processing; at the same time, the setting of the stem strips can avoid the color of the stem line from falling off relative to drawing the stem line with ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the leather sheet of the present invention;

[0021] Figure 4 Schematic diagram of a hemispherical mold structure in an embodiment of the present invention. In the present invention, mold 1 and mold 2 have the same appearance, and the heights of the convex strips on the inner surface are inconsistent.

[0022] Figure 5 It is a schematic diagram of the structure of the mold in the mold closing state in an embodiment of the present invention. In the present invention, mold 1 and mold 2 have the same appearance, and the heights of the convex strips on the inner surface are inconsistent.

[0023] Figure 6 This is a schematic diagram of the structure of the rubber basketball of the present invention when no stems are provided;

[0024] In the figure: outer skin 10; stem strips 11; skin sheet 12; stem grooves 13; yarn wrapping layer 20; inner liner 30. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] The technical solution of the present invention is achieved in this way:

[0027] A rubber basketball with strips and stems, the basketball may be a rubber basketball, the rubber basketball comprising a yarn bladder encapsulating a certain gas, and an outer skin 10 encapsulating the yarn bladder, the outer skin 10 is a whole outer skin 10 connected together, and a stem groove 13 is provided on the outer skin 10; a stem strip 11 is provided in the stem groove 13, and the depth of the stem groove 13 is greater than the thickness of the stem strip 11. In this way, the outer surface of the stem strip 11 is slightly concave on the surface of the outer skin 10, which can maintain the traditional appearance of the basketball and also allow users to maintain a good grip.

[0028] In a preferred embodiment, the stem 11 has a thickness of 0.8-1.0 mm and is made of a material selected from the group consisting of PU, PVC, TPU, and silicone. Furthermore, the stem 11 can be black and white, colorful, or fluorescent in color. When colorful or fluorescent, the players and spectators can see the trajectory of the ball more clearly, thereby avoiding affecting the performance of the athletes and ensuring the viewing experience of the spectators.

[0029] In a preferred embodiment, the surface of the stem 11 may be a smooth plane or may be provided with a texture pattern, so as to better maintain visual distinction and tactile distinction from the leather sheet 12 area outside the stem 11 .

[0030] In a preferred embodiment, the grain pattern on the surface of the stem 11 can be arbitrary, preferably, it can be the following classic grain patterns: including one or more of diamond grains, triangle grains, and wave grains. Optionally, the surface of the outer skin 10 other than the stem 11 is usually provided with a grain pattern that is different from the stem 11, for example, it can be a wavy grain.

[0031] In a preferred embodiment, a yarn wrapping layer 20 is provided on the surface of the inner liner 30, so as to better maintain the strength of the inner liner 30 and limit the excessive expansion of the inner liner 30; in an alternative embodiment, the yarn wrapping layer 20 can also be replaced by a plurality of fabric elements sewn together and wrapped around the inner liner 30, fabric strips in an overlapping configuration surrounding the surface of the inner liner 30, or a basically seamless spherical fabric.

[0032] The present invention also provides a method for manufacturing a rubber basketball with striped stems, comprising the following steps: heating and vulcanizing a first mold to form a basketball outer skin 10 and stem grooves 13 on the surface of the yarn liner; setting the stems 11 in the stem grooves 13 by gluing; in order to make the stems 11 better bonded and firmly bonded, heating and vulcanizing the set stems 11 through a second mold, preferably, in order to achieve a better vulcanization and shaping effect, the heating and vulcanization temperature is about 55°C-65°C.

[0033] In a preferred embodiment, the inner surface of the mold 1 is provided with a convex strip 1 corresponding to the stem groove 13; the surface of the mold 2 is provided with a convex strip 2 corresponding to the stem 11; the height of the convex strip 1 is greater than the height of the convex strip 2. Preferably, the thickness of the stem 11 is 0.8-1.0 mm, and the height of the convex strip 1 is about 0.8-1.0 mm greater than the height of the convex strip 2, so that when the mold 2 heats and vulcanizes the basketball, the convex strip 2 can better compact the stem 11 and make it firmly bonded to the stem groove 13; at the same time, the outer surface of the stem 11 is slightly concave on the outer skin 10, which can maintain the traditional appearance of the basketball and allow the user to maintain a good grip.

[0034] In a preferred embodiment, the method further includes the following steps: the stem strips 11 are made of one or more materials including PU, PVC, TPU, and silicone. Optionally, one of PU, PVC, TPU, and silicone can be combined with fluorescent pigments. The use of fluorescent pigments can enable players and spectators to see the trajectory of the ball more clearly, avoid affecting the performance of athletes, and at the same time ensure the viewing experience of the audience. Furthermore, the proportion of one of the materials of PU, PVC, TPU, and silicone is 90% to 98%, and the proportion of the fluorescent pigment is 2% to 10%. After PU, PVC, TPU, silicone and the fluorescent pigment are evenly mixed, the stem strips 11 are made, and the color of the fluorescent pigment can be selected as needed.

[0035] In a preferred embodiment, the surface of the stem 11 may be a smooth plane or provided with a texture pattern. When the surface is provided with a texture pattern, it can better maintain visual distinction and tactile distinction from the leather sheet 12 area outside the stem 11. Furthermore, the texture pattern on the surface of the stem 11 may be any, preferably, it may be the following classic textures: including one or more of diamond texture, triangle texture, and wave texture.

[0036] In a preferred embodiment, in the method: the stem strips 11 are glued and arranged in the stem grooves 13 by using water-based glue. In order to make the bonding effect of the water-based glue better, the surface of the stem grooves 13 can be slightly polished.

[0037] In a preferred embodiment, the method further comprises the following steps: laying out each leather piece 12 and placing them in two hemispherical molds 1, placing the yarn bladder in the mold 1 and inflating it, closing the mold 1 and heating it, so that each leather piece 12 is connected as a whole and combined with the yarn bladder. In a preferred embodiment, the area outside the convex strip 1 on the inner surface of the mold 1 is usually provided with a texture pattern that is different from the surface of the convex strip 1, such as a wavy dot pattern.

[0038] In a preferred embodiment, the method further comprises the following steps: the leather piece 12 is formed by cutting leather material using a mold.

[0039] In a preferred embodiment, the production of the yarn bladder includes the following steps: on the surface of the inner bladder 30, a nylon thread or polyester thread with an adhesive is used to wind the yarn layer 20. Further, the adhesive includes glue, latex, paste, etc. In an alternative embodiment, this step can also be replaced by: sewing a plurality of fabric elements to form a fabric layer structure extending around the inner bladder 30; soaking a plurality of substantially flat or planar fabric strips with latex and placing them around the inner bladder 30 in an overlapping configuration to form a fabric strip layer; and arranging a substantially seamless spherical fabric on the surface of the inner bladder 30.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rubber basketball with striped stems, comprising a yarn bladder encapsulating a certain gas, and an outer skin 10 encapsulating the yarn bladder, characterized in that: The outer skin 10 is a whole outer skin 10 connected together, and a stem groove 13 is provided on the outer skin 10; a stem bar 11 is provided in the stem groove 13, and the depth of the stem groove 13 is greater than the thickness of the stem bar 11.

2. A rubber basketball with striped ribs as claimed in claim 1, characterized in that: The stem strips 11 have a thickness of 0.8-1.0 mm and are made of a material selected from the group consisting of PU, PVC, TPU and silica gel.

3. The striped rubber basketball as claimed in claim 1, characterized in that: The surface of the stem 11 is provided with a texture pattern.

4. A rubber basketball with striped ribs as claimed in claim 3, characterized in that: The grain patterns on the surface of the stems 11 include one or more of diamond grains, triangle grains, and wave grains.

5. A method for manufacturing a rubber basketball with striped stalks, characterized in that: The following steps are involved: The mold is heated and vulcanized to form a basketball outer skin 10 and a stem groove 13 on the basketball outer skin 10 on the surface of the yarn bladder; The stem strips 11 are placed in the stem grooves 13 by gluing; The set stem strips 11 are heated, vulcanized and shaped by the second mold.

6. The method for manufacturing a striped rubber basketball as claimed in claim 5, characterized in that: The inner surface of the mold 1 is provided with a convex strip 1 corresponding to the stem groove 13; the surface of the mold 2 is provided with a convex strip 2 corresponding to the stem 11; the height of the convex strip 1 is greater than the height of the convex strip 2.

7. The method for manufacturing a striped rubber basketball as claimed in claim 6, characterized in that: The stem strips 11 are made of a material selected from the group consisting of PU, PVC, TPU and silica gel.

8. The method for manufacturing a striped rubber basketball as claimed in claim 6, characterized in that: The stem strips 11 are glued in the stem grooves 13 using water-based glue.

9. The method for manufacturing a rubber basketball with striped ribs as claimed in any one of claims 5 to 8, characterized in that: The following steps are also included: The leather pieces 12 are laid out and placed in two hemispherical molds, respectively. The yarn bladder is placed in the mold and inflated. The mold is closed and heated to connect the leather pieces 12 into one and combine them on the yarn bladder.

10. The method for manufacturing a striped rubber basketball as claimed in claim 9, characterized in that: The following steps are also included: The leather piece 12 is formed by cutting leather material using a cutting mold.

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