Structure of sphere and manufacturing method of integral molding thereof

Abstract

A spherical body structure and an integral molding manufacturing method thereof. The spherical body structure is integrally made of EVA material by means of injection molding. The wall of the spherical body structure is thickened to have a certain elasticity and strength so as to keep the spherical shape. It is unnecessary for the spherical body structure to keep an internal high-pressure air for providing elastic force. Even if the spherical body is punctured, the spherical body is still usable. In the integral molding manufacturing method of the spherical body structure, an EVA-based mixture material is injected into a mold and molded into a hollow spherical blank body with an opening. After cooled and shaped, the opening is sealed with a plate-like cap member to form a complete spherical body structure. When sealing the opening, an interior of the hollow blank body keeps in communication with the atmosphere.

Description

technical field [0001] The invention relates to sports equipment, in particular to a structure of a sphere and an integrally formed manufacturing method thereof. Background technique [0002] Generally common such as English or Gaelic football, its structure is made of a large number of pieces of specific shape that are joined to each other, and are fixed to each other by sewing or adhesive processing methods, and then inflated to form a spherical appearance shape. The traditional sphere structure has been widely used, but due to its cumbersome manufacturing and high cost factors, the price of the general standard football is relatively expensive, especially for relatively poor areas, the overpriced football is relatively cheap. Reduce the willingness of the people to buy and use. [0003] Furthermore, since the structure of the known football ball is composed of many pieces connected to each other, its overly cumbersome manufacturing process is not only ineffective in manu...

AI Technical Summary

Problems solved by technology

[0002] Generally common such as English or Gaelic football, its structure is made of a large number of pieces of specific shape that are connected to each other, and are fixed to each other by sewing or adhesive processing methods, and then inflated to form a spherical appearance shape. Traditional sphere structures such as spheres have been widely used, but due to its cumbersome manufacturing and high cost factors, the price of general standard footballs is relatively expensive, especially for relatively poor areas, overpriced footballs are relatively cheap. Reduce the willingness of the people to buy and use

[0003] Furthermore, since the structure of the known football ball is composed of a large number of pieces connected to each other, its overly cumbersome manufacturing process is not only ineffective in manufacturing, but also prone to excessive defects, resulting in a reduction in quality. All of these are difficult to use. The price of soccer balls is reduced to be widely used in developing countries with low national income

[0004] In addition, because the known technology is used to ensure the spherical appearance of the sphere based on whether the gas inside the sphere is filled, therefore, when the gas pressure inside the sphere is insufficient, the sphere cannot maintain a complete spherical shape, and it needs to be inflated again. Afterwards, it can continue to be used. On the contrary, when the sphere is damaged by external force and has a hole, no matter the size of the hole, it will cause the sphere to be unable to maintain the internal gas pressure, and it cannot continue to be used unless it is repaired.

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