Artificial ball head of badminton

Abstract

The utility model provides an artificial ball head of a shuttlecock. The artificial ball head of the shuttlecock comprises a solid part and a ball head membrane, wherein the solid part is of an integrally formed structure which is made by adopting a micro-foaming injection molding technology MuCell and is provided with microbubbles, and the solid part is prepared from the following materials in percentage by weight: 50 to 60 percent of thermoplastic elastomer TPR, 30 to 40 percent of natural sawdust and 5 to 10 percent of adhesive. And the bulbous scalp membrane is adhered and coated on the outer side surface of the entity part by using an adhesive. The artificial ball head manufactured through the micro-foaming injection molding technology is formed at a time, secondary machining or cutting is not needed, and the production speed can be increased; on the other hand, the material composition of the solid part greatly reduces the content of natural wood, can reduce the consumption of natural resources, and has the advantage of environmental protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the construction of a shuttlecock, in particular to the construction of a synthetic shuttlecock head. BACKGROUND

[0002] The structure of a shuttlecock can be basically divided into two parts, a "head" and "feathers". The head is a cylinder with a semi-spherical front end. The front end of the head contacts the face of a racket. The face of the racket is a net formed by a special string arranged in a crisscross pattern. The feathers are evenly inserted into the tail end of the head and arranged in a conical shape. Shuttlecocks can be classified into two types according to the materials used in their manufacture, natural materials and synthetic materials. Shuttlecocks made of natural materials are more expensive than those made of synthetic materials. Therefore, shuttlecocks made of natural feathers are usually used in competitions, while shuttlecocks made of synthetic materials are used as practice balls for beginners.

[0003] The head of a shuttlecock made of natural materials is usually made of natural cork. The cork provides the elasticity of the shuttlecock. A thin layer of skin is wrapped around the cork to provide the necessary friction when the head contacts the face of the racket and to protect the head. Natural feathers, such as goose or duck feathers, are usually used. The collection, processing and preparation of natural feathers are difficult and expensive. In a competition, the flight path of a shuttlecock can be affected if the feathers are damaged. Therefore, the feathers must be replaced immediately. In a high-intensity competition, the consumption of shuttlecocks is high.

[0004] The head of a conventional shuttlecock is made of natural cork. Sixteen feathers are inserted into the tail end of the head. The dense arrangement of the feathers can cause significant damage to the structure of the cork, reducing the strength of the head. After several intense hits, the roots of the feathers inserted into the head can become loose, affecting the flight path of the shuttlecock.

[0005] A shuttlecock head and its manufacturing method are disclosed in a published Chinese patent (Publication No. CN1050309C). The structure of the shuttlecock head is shown in Figure 1As shown, the shuttlecock head is composed of a semi-spherical body 1, a base 2 adhered to the semi-spherical body 1, and a polyurethane layer 3 on the outer surface, wherein the semi-spherical body 1 is made of softwood particles, and the base 2 is made of plastic foamed composite material. The manufacturing method mainly includes: softwood powder particles with added acrylic adhesive are subjected to a certain temperature and pressure for about 10 minutes and then cooled to obtain a semi-finished product for manufacturing the semi-spherical body 1, the semi-finished product of the semi-spherical body 1 is adhered to the material of the base 2, and then subjected to cutting processing to obtain a blank, and then the polyurethane layer 3 is coated on the outer surface to form the shuttlecock head. In order to make the semi-spherical body of the shuttlecock head have good elasticity and restoring force, the Chinese invention patent (publication number CN1050309C) uses softwood particles to make the semi-spherical body; in order to avoid serious damage to the structure when the feather is planted, the base 2 is made of plastic foamed composite material, thereby solving the above problems of the traditional shuttlecock head made of natural softwood. Content of the utility model

[0006] The technical problem to be solved by the present application is to provide an artificial head of a shuttlecock, which has the advantages of rapid manufacturing and reduced consumption of natural resources.

[0007] In order to solve the above technical problems, a preferred embodiment of the artificial head of the shuttlecock of the present application is constructed as follows:

[0008] An integrally formed solid part and a head skin film adhered to and coated on the outer surface of the solid part; the solid part includes: a cylindrical main part and a front end part in the shape of a hemisphere located at the axial front end of the main part, the main part and the front end part have the same diameter and are coaxial, and the axial tail end of the main part has a plurality of insertion holes uniformly arranged in a ring shape; the solid part is made of a hot plasticity mixed material containing wood chips and then is manufactured by a micro-foaming injection molding technology to form a micro-elastic porous structure with a micro-bubble structure.

[0009] As a preferred embodiment of the artificial head of the shuttlecock of the present application, the particle size of the natural wood chips is 1 mm to 2 mm.

[0010] As a preferred embodiment of the artificial head of the shuttlecock of the present application, the composition of the hot plasticity mixed material containing wood chips includes: 50% to 60% of hot plasticity elastomer (TPR) by weight, 30% to 40% of natural wood chips by weight, and 5% to 10% of adhesive by weight.

[0011] As a preferred embodiment of the artificial head of the shuttlecock of the present application, the material of the head skin film is PU coated fabric, and the outer surface of the head skin film has a texture.

[0012] The artificial ball head of the badminton racket has the advantages and effects that the entity part of the artificial ball head of the badminton racket is made by micro-foaming injection molding technology and has a micro-bubble structure, is one-time molding, does not need secondary processing or cutting, and can improve the production speed; on the other hand, the material composition of the entity part greatly reduces the content of natural wood, can reduce the consumption of natural resources, and has the advantage of environmental protection.

[0013] The details of other effects and embodiments of the present application are described below in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 Figure 1 is a sectional structure diagram of the ball head of the prior art badminton racket;

[0016] Figure 2 is a structure diagram of an embodiment of the artificial ball head of the badminton racket of the present application;

[0017] Figure 3 is a sectional structure diagram of the embodiment structure of Figure 2

[0018] Figure 4 is a top view of the embodiment structure of Figure 2

[0019] Figure 5 is a use example of the artificial ball head of the badminton racket of the present application.

[0020] SYMBOL EXPLANATION

[0021] "PRIOR ART"

[0022] 1: semicircular sphere 2: base

[0023] 3: polyurethane layer

[0024] "THE PRESENT APPLICATION"

[0025] 10: entity part 11: main body part

[0026] 111: insertion hole 12: front end part

[0027] 20: ball head film 30: feather

[0028] 31: root B: micro-bubble​​ Detailed Implementation

[0029] In the embodiments described below, the positional relationships include: up, down, left, and right. Unless otherwise specified, they are all based on the direction shown by the components in the diagram.

[0030] Please refer to the following first. Figure 2 and Figure 3 This is a structural diagram and cross-sectional structural diagram of one embodiment of the artificial shuttlecock head of this application. One embodiment of the artificial shuttlecock head of this application includes: a solid portion 10 and a head film 20. The solid portion 10 is made using microcellular injection molding technology (MuCell) and has microbubbles B (see...). Figure 3 The one-piece molded structure allows for adjustment of the elasticity, density, and weight of the artificial shuttlecock head by controlling the density of microbubbles, thus achieving the required elasticity for a badminton shuttlecock head and meeting the weight standards for badminton shuttlecocks. The shuttlecock head film 20 is adhered to and covers the outer surface of the solid part 10 using adhesive. In a preferred embodiment, the shuttlecock head film 20 is made of PU-coated fabric, and its outer surface has a textured surface, such as a crisscrossing grid pattern, to increase the friction between the artificial shuttlecock head and the badminton racket face.

[0031] A preferred embodiment of the artificial shuttlecock head of this application, wherein the solid part 10 is a micro-elastic porous structure with a microbubble structure, manufactured by micro-foaming injection molding technology using a "thermoplastic composite material containing wood chips". The "thermoplastic composite material containing wood chips" comprises: 50% to 60% by weight of thermoplastic elastomer (TPR), 30% to 40% by weight of natural wood chips, and 5% to 10% by weight of adhesive. Preferably, the particle size of the natural wood chips is 1 mm to 2 mm. Thermoplastic elastomer (TPR), commonly known as synthetic rubber, typically has a hardness of approximately 80-85° Shore A. The method for manufacturing the artificial shuttlecock head of this application is basically to uniformly mix thermoplastic elastomer (TPR), natural wood chips and adhesive according to the above-mentioned weight percentages to form a "thermoplastic composite material containing wood chips", and then manufacture the artificial shuttlecock head of this application by micro-foaming injection molding technology.

[0032] The micro-foaming injection process is to inject a precise amount of supercritical fluid into the injection tube of the injection machine through a syringe, and the supercritical fluid is generally nitrogen (N2) or carbon dioxide (CO2). The supercritical fluid and the mixed material are uniformly mixed and diffused by a specially designed screw, forming a single-phase solution of supercritical fluid-melted mixed material. Then the single-phase solution is injected into the cavity of the shuttlecock head forming mold for low-pressure filling. Because of the instantaneous pressure drop, the supercritical fluid entering the cavity can diffuse, nucleate and grow into uniform micro-bubbles from the molten mixed material. When the cavity is filled, the bubble growth stops, and the bubble growth generates uniform holding pressure in the cavity.

[0033] The mixed material containing micro-bubbles is cooled and solidified to obtain a micro-foaming finished product. This process saves the holding pressure stage of the traditional plastic injection molding process, saves the process cycle time, solves the problems of uneven shrinkage and warping deformation of traditional injection products, and greatly improves the dimensional accuracy of the product.

[0034] The structure of the solid part 10 includes a cylindrical main body part 11 and a semispherical front end part 12 located at the axial front end of the main body part 11. The main body part 11 and the front end part 12 have the same diameter and are coaxial. The axial tail end of the main body part 11 has a plurality of insertion holes 111 arranged in a ring shape (see Figure 4 ), for inserting the roots 31 of the shuttlecock feathers 30 (see Figure 5 ). According to the current unified standard of shuttlecock, the insertion holes 111 are a total of 16, which can accommodate the roots 31 of 16 shuttlecock feathers 30 respectively. The artificial head of the shuttlecock of the present application is made by micro-foaming injection molding technology, which can form the insertion holes 111 at the same time of integral molding, without the need for secondary drilling operation, which helps to improve the production speed and avoid the problems such as drilling position deviation and deformation of the head caused by high heat during drilling in the traditional method.

[0035] The above-mentioned embodiments and / or implementations are only used to illustrate the preferred embodiments and / or implementations of the present application, and do not limit the implementation of the present application in any form. Any person skilled in the art can make some changes or modifications without departing from the scope of the technical means disclosed in the present application, and other equivalent embodiments can be made, but should be regarded as the same technology or embodiment as the present application.

Claims

1. A synthetic shuttlecock head, characterised in that, The artificial shuttlecock head comprises: a one-piece solid part, and a head skin film adhered to and covering the outer surface of the solid part; the solid part comprises: a cylindrical main part and a front end part in the shape of a hemisphere located at the axial front end of the main part, the main part and the front end part have the same diameter and are coaxial, the axial tail end of the main part has a plurality of insertion holes, and the insertion holes are uniformly arranged in a ring shape; the solid part is made of a thermoplastic mixed material containing wood chips and is manufactured by a micro-foaming injection molding technology to have a micro-elastic porous structure with a micro-bubble structure.

2. A synthetic shuttlecock head according to claim 1, characterised in that The particle size of the wood chips is 1 mm to 2 mm.

3. The artificial shuttlecock head of claim 1, wherein The material of the head skin film is PU coated fabric, and the outer surface of the head skin film has a texture.

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