KR101264750B1 - Mold of baseball or softball and molding method thereof - Google Patents

Abstract

Provided are a molding mold for baseball or softball and a method for forming the baseball or softball, which can reduce the production cost of a baseball or softball and at the same time satisfy the demand for appearance of the ball.
Comprising two eight-shaped mold member corresponding to the outer shape of the ball, and by bending the two mold members to form the outer shape of the sphere and at the same time a hollow portion is formed, and the inside and the inside of the two mold members Protruding feeding grooves are provided to communicate with each other, ventilating grooves communicating with the inside of the mold member are formed at both sides of the feeding groove, and the hollow part of the sphere is formed by combining the two mold members with each other. The material injection channel is formed by combining two input grooves, and the ventilation channel is formed by combining the two ventilation grooves.

Description

Molding method of baseball or softball and the molding method {MOLD OF BASEBALL OR SOFTBALL AND MOLDING METHOD THEREOF}

)의 외관에 관한 요구를 만족시킬 수 있는 야구 또는 소프트볼의 성형 몰드 및 그 성형 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding mold for baseball or softball and a method for forming the baseball.

It relates to a molding mold for baseball or softball and a molding method thereof that can satisfy the demand for appearance.

As shown in Figs. 1 and 2, the conventional baseball or softball structure has a ball shim 10 having mainly elastic force and a ball leather 11 covering an outer surface of the ball shim 10. It consists of. The ball leather 11 is composed of two pieces of gourd-like sheet material sewn together, and at the same time, the ball seam 10 is covered with a ball. A seam is provided at the connection portion of the ball leather 11, which satisfies the appearance requirements of baseball or softball. Since the seam is artificially completed, there is a high demand on the operation ability of the workforce. However, since the cost of manpower continues to increase at present, the manufacturing cost of the product also becomes expensive. On the other hand, the material of the ball leather 11 is more natural leather, but the number of factories having a technology for producing baseball leather. Since the price of natural leather is also high, the cost of the product cannot be reduced, which makes it difficult to improve the market competitiveness of the product. In addition, there is a limit to the use of the ball by the two ball leathers 11 sewed each other, and when water is used in a high humidity environment or in rainy weather, the water submerges from the gap between the seam 12 of the ball leather 11. As a result, the ball seam 10 is submerged to increase the mass of the ball, and furthermore, the wet ball seam 10 is easily deformed, which may adversely affect the elasticity of the ball and the properties of the ball, thereby reducing the service life of the ball. .

As shown in Figs. 3 and 4, a new baseball or softball has been developed to solve the above problem, which manufactures a semi-spherical skin 20 made of PU (polyurethane) material to make the conventional ball leather 11 Instead of) is to install the outer skin 20 of the hemisphere outside the ball shim 21. In this way, mechanization of the outer skin of the ball can reduce manufacturing costs by manpower, and at the same time it is possible to achieve the prevention of immersion due to the good sealing property of PU material instead of natural leather. Since the mold line 22 appears in the center of the surface, there is a problem that the manufacturing process is complicated because secondary processing must be performed to erase the mold line 22 while maintaining the aesthetic appearance of the ball.

In addition, since the ball or the softball sphere is generally used at present, it is not particularly described in the patent literature or non-patent literature.

In addition, the method of installing the skin 20 of the semi-spheres on the outside of the ball shim 21 is a problem that the skin 20 of the semi-spheres and the ball shim 21 are separated when not well bonded. It is easy to generate | occur | produce, and there exists a possibility that it may adversely affect the performance of a sphere.

An object of the present invention is to reduce the production cost, to facilitate the processing process, and to strengthen the coupling between the ball seam and the surface of the ball to maintain the use efficiency of the ball, a molding mold and a molding method thereof To provide.

In order to achieve the above object, the molding mold of the first embodiment according to the present invention comprises two eight-shaped mold members corresponding to the outline of the sphere, and forms the outline of the sphere by joining the two mold members together. The two mold members may be made of a flexible material, and seam grooves may be provided inside a portion joining the two mold members to each other, and a material injection channel and aeration may be provided at a portion joining the two mold members to each other. The channel is prepared.

In the method of forming a baseball or softball using the molding mold, 1. A mold having a hollow part is formed by first joining two eight-shaped mold members corresponding to the outer shape of the ball. 2. Next, the PU material heated with the liquid is injected into the hollow part of the mold, the material injection channel of the mold is sealed, and the mold is shaken to shake the mold so that the PU material is uniformly formed on the inner surface of the hollow part. do. 3. A ball shim is formed by injecting a material of the ball shim into the inside of the cortex of the ball and solidifying the material of the ball shim. 4. The ball is obtained after removing the mold.

In order to achieve the above object, a molding mold of a second embodiment according to the present invention is disclosed. The difference between the second embodiment and the first embodiment is that a plurality of positioning rods are provided on the inner surfaces of the two mold member joining portions, and the positioning rods support a centripet. This has the effect of controlling the thickness of the ball skin layer.

In the method of forming a baseball or softball using the molding mold of the second embodiment, 1. A ball shim is formed independently. 2. The ball shims are positioned by the positioning rods in the two mold members while the ball shims are arranged in the hollow portions of the spherical molds joined to each other. 3. The material of the ball is formed by heating the PU material to the liquid state of flow and injecting an appropriate amount from the feeding groove into the hollow of the mold and covering the ball seam with the PU material in the fluid state. 4. The sphere is obtained after removing the mold.

The present invention solves the above problems, the molding mold and the molding method of the present invention to form a concrete mold by joining the two mold members, the flexible mold member is easy to be removed, furthermore the two molds Since the seam line can be formed in the ball skin layer by providing the seam groove in the inside of the part which couple | bonds a member, the secondary process is unnecessary because the external appearance requirement of a sphere is satisfied and the mold line after shaping | molding is hidden by the seam line. Since the design of the mold is accurate and the molding method is simple, the quality and production efficiency of the baseball or softball sphere can be greatly improved.

1 is a partially exploded perspective view showing the configuration of a conventional baseball or softball.
2 is a perspective view showing the structure of a conventional baseball or softball.
3 is a partially exploded plan view showing another configuration of a conventional baseball or softball.
4 is a plan view showing another configuration of a conventional baseball or softball.
5 is an exploded perspective view showing a molding mold according to the present invention.
6 is a perspective view showing a molding mold according to the present invention.
7 is a flow chart showing a molding method according to the present invention.
8 is an exploded perspective view showing a molding mold of a second embodiment according to the present invention.
9 is a flow chart showing another forming method according to the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described in detail with reference to an accompanying drawing. However, the following examples are merely examples of the preferred embodiments of the present invention, and the technical scope of the present invention is not limited to the following examples.

As shown in Figs. 5 and 6, the molding mold of the first embodiment according to the present invention comprises two eight-shaped mold members 30 and 40 corresponding to the shape of the sphere, and the two mold members By forming the outer shape of the ball by bending to combine with each other at the same time a hollow portion is formed inside, the two mold members 30, 40 are made of a flexible material (for example, rubber, silicone or plastic material, etc.) Because of its ability to deform.

The engaging portion 31 is formed by forming a stepped surface on the outer surface around the mold member 30, and a concave seam groove 32 is provided on the surface of the engaging portion 31. A protruding feeding groove 33 is provided above the mold member 30 to communicate with the inside thereof, and a ventilation groove 34 communicating with the inside of the mold member 30 on both sides of the feeding groove 33. Is formed.

The engaging portion 41 is formed by forming a stepped surface on the outer surface around the mold member 40, and a concave seam groove 42 is provided on the surface of the engaging portion 41. A protruding feeding groove 43 is provided above the mold member 40 to communicate with the inside thereof, and a ventilation groove 44 communicating with the inside of the mold member 40 on both sides of the feeding groove 43. Is formed.

By joining the two mold members 30 and 40 together, a hollow portion of a complete sphere is formed, while the joining portions 31 and 41 provide an edge for joining the mold members 30 and 40. By combining the two input grooves 33 and 43, a material injection channel is formed, and by combining the two ventilation grooves 34 and 44, a ventilation channel is formed.

As shown in FIG. 7, the method of forming a baseball or softball using the above-described mold includes first forming a mold having a hollow part by joining two eight-shaped mold members 30 and 40 corresponding to the outer shape of the ball. Form.

Next, the PU material heated with the liquid in the flow state is injected into the hollow of the mold from the feeding grooves 33 and 43, and the closing grooves 33 and 43 of the mold are sealed with a sealing cover 50. By sealing the mold after shaking, the PU material is uniformly formed on the inner surface of the hollow layer 60 of the ball. When the cortex 60 of the ball is formed, the vent grooves 33 and 34 have an exhaust function to secure the pressure balance inside the mold.

Then, the sealing cover 50 is removed to inject a ball shim material into the inside of the ball layer 60 to solidify the ball shim material to form a ball shim 70. The material of the ball shim is a PU material, or a composite material having elasticity and hard properties, and closely couples the ball skin layer 60 and the ball shim 70.

Finally, the mold is separated to obtain a ball according to the flexible characteristics of the mold members 30 and 40.

In order to improve aesthetics of the ball surface, the part corresponding to the material injection channel of the outer surface of the ball may be subjected to ablation (finishing), and to the seam portion formed by the seam grooves 32 and 42. A coloring spray process is performed to color the seam portion.

)의 봉제선에 숨겨지기 때문에 2차 가공이 불필요해진다. 상기 몰드의 설계구조가 간단하고 또한 컴팩트(compact)하여 상기 성형 방법이 간단하므로 야구 또는 소프트볼 구체의 품질과 생산 효율을 큰폭으로 향상시킬 수 있다. 또한, 상기 볼 피층(60)을 형성했기 때문에, 볼 심(70)을 성형함으로써 상기 볼 피층(60)과 상기 볼 심(70)과의 결합 효과를 더욱 향상시켜 구체(

)의 품질과 효능을 확보할 수 있다.Baseball or softball manufactured according to the molding mold and the molding method of the first embodiment according to the present invention, the hollow portion of the mold corresponding to the ball is formed by joining two mold members 30, 40 to each other, Since the mold members 30 and 40 are easy to separate, and the seam on the surface of the ball layer 60 can be formed by the recessed seam grooves 32 and 42 inside the mold members 30 and 40. Aesthetics of the appearance of the ball can be satisfied. In addition, the mold line after the molding is a sphere (

Hidden in the seam, the secondary processing is unnecessary. Since the design structure of the mold is simple and compact, and the molding method is simple, the quality and production efficiency of the baseball or softball sphere can be greatly improved. In addition, since the ball core layer 60 is formed, by forming the ball shim 70, the coupling effect of the ball layer 60 and the ball shim 70 can be further improved,

) Quality and efficacy can be secured.

As shown in Fig. 8, a molding mold of a second embodiment according to the present invention is disclosed. Most of the second embodiment and the first embodiment are the same, and the hollow part of the mold corresponding to the ball is formed by bending two eight-shaped mold members 30 and 40 to each other. The other is that a plurality of positioning rods 35 and 45 are provided on the inner surface of the engaging portions 31 and 41 of the two mold members so that the positioning rods 35 and 45 support the ball shim. It has the effect of controlling the thickness of the spherical cortex by.

As shown in FIG. 9, the baseball or softball shaping | molding method using the shaping | molding mold of the said 2nd Example shape | molds the ball shim 80 independently. The ball shim 80 may be any one selected from a PU material, rubber, cork, and a multi-layer wire.

) 몰드의 중공부에 상기 볼 심(80)을 배치함과 동시에 상기 볼 심(80)이 상기 두 개의 몰드 부재(30)(40) 내의 위치 결정 로드(35)(45)에 의하여 위치가 결정된다.Next, a sphere in which the two mold members 30 and 40 are joined to each other (

The ball shim 80 is positioned by the positioning rods 35 and 45 in the two mold members 30 and 40 at the same time as the ball shim 80 is disposed in the hollow part of the mold. do.

Then, the PU material is heated to a liquid state of flow and injected into the hollow portion of the mold from the feeding grooves 33 and 43 in an appropriate amount, thereby covering the ball shim 80 with the PU material in a fluid state. The epidermis 90 of the ball is formed.

Finally, the ball is obtained by separating the mold according to the flexible characteristics of the mold members 30 and 40.

) 표면의 미관 향상을 위해서, 상기 구체의 외측 표면의 재료 주입 채널에 대응하는 부위에 대하여 삭마가공을 할 수 있고, 상기 봉제선 홈(32)(42)에 의하여 성형된 봉제선 부분에 대하여 착색 스프레이 가공을 하여 봉제선 부분을 착색한다.sphere(

In order to improve the aesthetic appearance of the surface, abrasion treatment may be performed on a portion corresponding to the material injection channel of the outer surface of the sphere, and colored spray processing may be performed on the seam portion formed by the seam grooves 32 and 42. To color the seam portion.

)(90)를 성형하는 방식과 몰드 부재(30)(40)의 통기홈(34)(44) 마련에 의해, 구 피(90) 두께의 균일성 및 구체(

)의 표준 규격(예를 들어, 내압 수치, 탄력 계수 등)을 확보할 수 있으므로 구체의 품질과 성능을 확보할 수 있다.The baseball and softball produced by the molding mold and the molding method of the second embodiment according to the present invention are supported by the positioning rods 35 and 45, and then the ball shim 80 is supported.

By the method of forming the (90) and the provision of the vent grooves 34 and 44 of the mold members 30 and 40, the uniformity of the thickness of the goof 90 and the sphere (

) Standard standards (for example, pressure resistance, modulus of elasticity, etc.) can be secured to ensure the quality and performance of the sphere.

The lines, proportions, or thicknesses of the members shown in the drawings may be displayed to enlarge or simplify, and the names of the members used in the present specification are used to describe the embodiments, and are not intended to limit the present invention. Although the above detailed description illustrates the present invention through embodiments according to the present invention, the above embodiments do not limit the claims of the present invention, and any corrections or changes that do not depart from the technical gist of the present invention, For example, modifications of the same effect should be included in the claims of the present invention.

[Industrial Availability]

)의 외관에 관한 요구를 만족시킬 수 있는 야구 또는 소프트볼의 성형 몰드 및 그 성형 방법을 제공할 수 있다.Since this invention has said structure, while reducing the manufacturing cost of a baseball or a softball,

It is possible to provide a molding mold of baseball or softball and a molding method thereof, which can satisfy the demands related to the appearance.

(Prior Art)
10 ball shim
11 ball leather
12 seams
Epidermis of 20 semi-spheres
21 ball shim
22 mold line
(Invention)
30 mold members
31 mating parts
32 seam home
33 input groove
34 ventilation groove
35 positioning rod
40 mold parts
41 mating parts
42 seam home
43 input groove
44 Aeration Home
45 positioning rod
50 sealing cover
Cortex of 60 balls
70 ball shim
80 ball shim
90 ball cuticle

Claims (7)

Comprising two eight-shaped mold member corresponding to the outer shape of the ball, and by bending the two mold members to form the outer shape of the sphere and at the same time a hollow portion is formed, the inside and the upper portion of the two mold members Protruding input grooves are formed to communicate with each other, and ventilation grooves communicating with the inside of the mold member are formed at both sides of the input groove, and the hollow parts of the sphere are formed by joining the two mold members with each other, and the two A material injection channel is formed by coupling an input groove, and a ventilation channel is formed by combining the two ventilation grooves. 2. The molding mold for baseball or softball according to claim 1, wherein a plurality of positioning rods are provided on an inner surface of the engaging portion of the two mold members. The method of claim 1, wherein the engaging portion is formed by forming a stepped surface on the outer surface around the two mold members, a concave seam groove is provided on the inner surface of the engaging portion, the engaging portion is the two mold members Molding mold of baseball or softball, characterized in that to provide an edge for coupling. 2. The molding mold of a baseball or softball according to claim 1, wherein the two mold members have a deformability because they are made of a flexible material made of rubber, silicone or plastic. A mold having a hollow part is formed by joining two flexible eight-shaped mold members to each other, and a PU material heated with a liquid in a liquid state is injected into the hollow part of the mold, and the closing groove of the mold is sealed by a sealing cover. By forming the ball core by shaking the mold, the PU material uniformly forms a sphere layer on the inner surface of the hollow portion, and injects a material of the ball core into the inside of the sphere layer to solidify the material of the ball core, Finally, the baseball or softball molding method, characterized in that the ball is obtained by separating the mold according to the flexible characteristics of the mold member. The method of claim 5, wherein the material of the ball shim is PU. The method for forming a baseball or softball according to claim 5, wherein after the ball is obtained, coloring is performed by coloring spraying on the surface thereof.

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