Preparation method of artificial shuttlecock

Abstract

The invention relates to the technical field of artificial shuttlecocks, in particular to a preparation method of an artificial shuttlecock. The method comprises the following steps: providing a plurality of artificial feathers for the shuttlecock and a hemispherical shuttlecock head; and inserting the artificial feathers into the shuttlecock head and bonding and fixing to obtain the artificial shuttlecock. The artificial shuttlecock prepared by the method provided by the invention has more excellent flight stability and an original ecological structure close to natural feathers, so that the flight performance of the shuttlecock prepared from the natural feathers is basically restored.

Description

Technical Field

[0001] The invention relates to the technical field of artificial badminton shuttlecocks, and in particular to a method for preparing an artificial badminton shuttlecock. Background Art

[0002] With the popularity of badminton and the improvement of competitive level, higher requirements are placed on the durability, flight stability and cost control of badminton. The main raw materials of badminton are duck feathers and goose feathers. These natural materials are affected by various factors such as breeding cycle and climatic conditions, and the supply is uncertain. In recent years, with the popularity of badminton and the increase in the number of participants, the demand for badminton has increased significantly, resulting in a continuous increase in raw material prices, which in turn pushed up the manufacturing cost and selling price of badminton.

[0003] Since the raw materials of badminton are natural materials, their quality is affected by many factors, such as the growth cycle of ducks and geese, feeding conditions, processing technology, etc. This leads to differences in performance even for the same batch of badminton, such as flight stability, durability, etc. This instability in quality has caused trouble for consumers and also affected the experience of badminton.

[0004] Although artificial badminton has advantages in durability and cost control, its technical maturity is not yet enough to completely replace natural badminton. Especially in terms of flight stability and feel, artificial badminton still cannot reach the level of natural badminton. This has led many badminton enthusiasts to give up using artificial badminton after trying it because they are not satisfied with its performance. Summary of the invention

[0005] The present invention aims to provide a product which is close to a natural badminton in terms of flight stability, hitting resistance and the like, and particularly relates to a method for preparing an artificial badminton.

[0006] The technical solution provided by the present invention is as follows:

[0007] A method for preparing an artificial badminton comprises the following steps:

[0008] Providing a number of artificial feathers for badminton and hemispherical heads;

[0009] The artificial feather is inserted into the ball head and bonded and fixed to obtain an artificial badminton ball.

[0010] In one embodiment, the method for making artificial feathers for badminton comprises the following steps:

[0011] Providing a feather shaft, wherein the feather shaft has a feather connecting portion and a handle connected to the feather connecting portion;

[0012] Provide some fiber;

[0013] The fibers are formed into a net or sheet, impregnated with resin and cured to obtain feathers;

[0014] The feather part is fixed on the feather joint part to obtain an artificial feather for badminton.

[0015] In one embodiment, the method for manufacturing artificial feathers for badminton comprises the following steps:

[0016] Providing a feather shaft, wherein the feather shaft has a feather connecting portion and a handle connected to the feather connecting portion;

[0017] Providing a plurality of barbs, each barb having a twig portion that is in the same plane as the barb and has an extension direction different from that of the barb;

[0018] The barbs are fixed to the feather joints to obtain artificial feathers for badminton.

[0019] In one embodiment, the method for manufacturing the barbs having twig portions comprises the following steps:

[0020] Providing a barb and a plurality of twigs, wherein the twigs are fixed to the barb by an adhesive or an electrostatic field effect;

[0021] Preferably, the feathers are wires, and the material of the wires is selected from any one of polyamide fibers, polyolefin fibers, acrylic fibers, and polyester fibers, or a combination of at least two thereof;

[0022] Preferably, the twigs are filaments, and the material of the filaments is selected from any one of polyamide fibers, polyolefin fibers, acrylic fibers, and polyester fibers, or a combination of at least two of them.

[0023] In one embodiment, the method for preparing the rachis comprises the following steps:

[0024] Provide core material mold;

[0025] Rolling the carbon fiber cloth onto the core material mold to form a carbon rod structure;

[0026] Winding a pressure belt on the outer surface of the carbon rod structure;

[0027] The carbon rod structure wrapped with the pressure belt and the core material mold are placed in a pressurized heating device for pressurization and heating to solidify the carbon rod structure;

[0028] The pressure belt outside the carbon rod structure is removed, and the core material mold in the carbon rod structure is extracted to obtain the feather shaft;

[0029] Preferably, the core material mold is an iron core mold, and the pressure belt is an OPP belt;

[0030] Preferably, the upper surface of the rachis includes at least one step surface that is not in the same plane, and the upper surface of the handle is higher than the upper surface of the feather joint;

[0031] Preferably, the barb joint has a first side surface and a second side surface opposite to each other; the first side surface is recessed inwardly to form one or more first recessed portions for inserting the barbs; and the second side surface is recessed inwardly to form one or more second recessed portions for inserting the barbs.

[0032] In one embodiment, the method for preparing the rachis comprises the following steps:

[0033] Provide core material and carbon fiber cloth;

[0034] Wrapping the carbon fiber cloth on the outside of the core material;

[0035] The wrapped material is placed in a forming mold for heating and cooling to obtain a feather shaft;

[0036] Preferably, the core material is a foam material;

[0037] Preferably, the upper surface of the rachis includes at least one step surface that is not in the same plane, and the upper surface of the handle is higher than the upper surface of the feather joint;

[0038] Preferably, the barb joint has a first side surface and a second side surface opposite to each other; the first side surface is recessed inwardly to form one or more first recessed portions for inserting the barbs; and the second side surface is recessed inwardly to form one or more second recessed portions for inserting the barbs.

[0039] In one embodiment, the method for preparing the rachis comprises the following steps:

[0040] Providing an inner core and feather shaft mold;

[0041] The inner core is placed in the feather shaft mold and then injection molding is performed to obtain a feather shaft with at least a partially hollow structure.

[0042] In one embodiment, the inner core is placed at the handle in the feather shaft mold, so that the handle is a hollow structure after injection molding.

[0043] In one embodiment, the raw materials for injection molding include short fibers and plastic materials;

[0044] Preferably, the staple fibers are selected from any one of glass fibers, basalt fibers, aramid fibers, carbon fibers, silicon carbide fibers, polyester fibers, polypropylene fibers, acrylic fibers, or nylon fibers, or a combination of at least two thereof;

[0045] Preferably, the plastic material is selected from any one of polyethylene, polypropylene, polybutylene terephthalate, polycarbonate, acrylonitrile-butadiene-styrene, polystyrene, polyvinyl chloride or modified materials thereof, or a combination of at least two thereof.

[0046] In one embodiment, the ratio of the staple fibers to the plastic material is 1.0-1.4.

[0047] Based on the above, compared with the prior art, the artificial badminton produced by the method provided by the present invention has better flight stability.

[0048] Other features and beneficial effects of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other beneficial effects of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The positional relationships described in the drawings in the following description are based on the directions in which the components are drawn in the diagrams, unless otherwise specified.

[0050] Figure 1 A schematic diagram of the structure of an artificial feather for badminton provided in the first embodiment of the present invention;

[0051] Figure 2 A schematic structural diagram of an artificial feather shaft for badminton provided in accordance with the first embodiment of the present invention;

[0052] Figure 3 A right side view of a feather rachis provided in the first embodiment of the present invention;

[0053] Figure 4 A left side view of a feather rachis provided in the first embodiment of the present invention;

[0054] Figure 5 A bottom view of the rachis provided for the first embodiment;

[0055] Figure 6 A schematic diagram of the structure of an artificial feather for badminton provided in a modified example of the first embodiment of the present invention;

[0056] Figure 7 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0057] Figure 8 A schematic diagram of the structure of an artificial badminton provided by the first embodiment of the present invention;

[0058] Fig. 9 A schematic diagram of the structure of an artificial feather for badminton provided in a second embodiment of the present invention;

[0059] Fig.10 A right side view of an artificial feather for badminton provided by a second embodiment of the present invention;

[0060] Fig.11 A right side view of an artificial feather shaft for badminton provided in accordance with a second embodiment of the present invention;

[0061] Fig.12 A front view of an artificial feather shaft for badminton provided in accordance with a second embodiment of the present invention;

[0062] Fig.13 for Fig.12 The enlarged schematic diagram of point B in the middle;

[0063] Fig.14 for Fig.12 An enlarged schematic diagram of another deformed structure at B in the middle;

[0064] Fig.15 A schematic structural diagram of an artificial badminton provided by a second embodiment of the present invention;

[0065] Fig.16 A schematic diagram of the structure of an artificial feather for badminton provided in a third embodiment of the present invention;

[0066] Fig.17 A right side view of an artificial feather for badminton provided in accordance with a third embodiment of the present invention;

[0067] Fig.18 A schematic structural diagram of an artificial feather shaft for badminton provided in a third embodiment of the present invention;

[0068] Fig.19 A front view of an artificial feather shaft for badminton provided in accordance with a third embodiment of the present invention;

[0069] Fig. 20 for Fig.19 Schematic diagram of the enlarged structure at C in the middle;

[0070] Fig.21 A schematic structural diagram of an artificial feather shaft for badminton provided in a modified example of the third embodiment of the present invention;

[0071] Fig. 22 for Fig.21 Schematic diagram of the enlarged structure at D in the middle;

[0072] Fig.23A schematic diagram of the structure of an artificial feather for badminton provided in a modified example of the third embodiment of the present invention;

[0073] Fig.24 for Fig.23 The enlarged structural diagram at F in the middle;

[0074] Fig.25 A schematic structural diagram of a badminton provided by a third embodiment of the present invention;

[0075] Fig.26 A schematic diagram of the structure of an artificial feather for badminton provided in a fourth embodiment of the present invention;

[0076] Fig. 27 for Fig.26 A magnified schematic diagram of the structure at G in the middle;

[0077] Fig.28 A right side view of an artificial feather for badminton provided in accordance with a fourth embodiment of the present invention;

[0078] Fig.29 A bottom view of an artificial feather for badminton provided in accordance with a fourth embodiment of the present invention;

[0079] Fig.30 A schematic diagram of the structure of an artificial feather for badminton provided as a variation of the fourth embodiment of the present invention;

[0080] Fig.31 This is a schematic structural diagram of a badminton provided by the fourth embodiment of the present invention.

[0081] Reference numerals:

[0082] 10. Ball head; 20. Artificial feather; 210. Rachis; 210a. Upper surface of rachis; 210b. Lower surface of rachis; 210c. Left end surface of rachis; 210d. Right end surface of rachis; 211. Feather joint; 211a. First side surface; 211b. Second side surface; 211c. Upper surface of feather joint; 211d. Lower surface of feather joint; 212. Stem; 212a. Upper surface of stem; 220. Feather; 221. Barb; 221a, 221b. Both sides of barb; 2111. First recess; 2112. Second recess; 221c. Upper surface of barb; 221d. Lower surface of barb; 222. Twig; 223. Incision. DETAILED DESCRIPTION

[0083] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; the technical features designed in different implementation modes of the present invention described below can be combined with each other as long as they do not conflict with each other; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0084] In the description of the present invention, it should be noted that all terms used in the present invention (including technical terms and scientific terms) have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs, and cannot be understood as limiting the present invention; it should be further understood that the terms used in the present invention should be understood to have the same meanings as these terms in the context of this specification and in the relevant fields, and should not be understood in an idealized or overly formal sense, unless explicitly defined in the present invention.

[0085] Figure 1 A schematic diagram of the structure of an artificial feather for badminton provided in the first embodiment of the present invention; Figure 2 A schematic structural diagram of an artificial feather shaft for badminton provided in accordance with the first embodiment of the present invention; Figure 3 A right side view of a feather rachis provided in the first embodiment of the present invention; Figure 4 A left side view of a feather rachis provided in the first embodiment of the present invention; Figure 5 A bottom view of the rachis provided for the first embodiment; Figure 6 A schematic diagram of the structure of an artificial feather for badminton provided in a modified example of the first embodiment of the present invention; Figure 7 for Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 8 A schematic diagram of the structure of an artificial badminton provided by the first embodiment of the present invention;

[0086] Please refer to Figure 1 As shown, the artificial feather 20 of this embodiment is applied to badminton, and the weight of the artificial feather is between 0.100g and 0.125g;

[0087] Specifically, the artificial feather 20 mainly includes a feather shaft 210 and a feather part 220;

[0088] Please continue to refer to Figure 1 As shown, the feather shaft 210 is used to support the feather part 220, and the feather shaft 210 has a feather connecting part 211 and a handle part 212 connected to the feather connecting part 211; the feather shaft 210 is a carbon fiber hollow tube with a tube diameter gradually changing from thick to thin from the handle part 212 to the feather connecting part 211.

[0089] In some preferred embodiments, the carbon fiber hollow tube is partially or completely filled with foam material, and the foam material provides a lightweight effect for the feather shaft 210, and the outer layer of carbon fiber provides a certain hardness to achieve an effect close to that of a natural feather shaft; it is worth noting that the feather shaft 210 can be partially filled with foam material, for example, the handle 212 is a hollow structure, and the feather joint 211 is a solid structure filled with foam material.

[0090] In other embodiments, the feather shaft 210 is a modified plastic tube whose diameter gradually changes from thick to thin from the handle 212 to the feather joint 211; the modified plastic tube is a hollow structure at the handle 212 and a solid structure at the feather joint 211; the modified plastic tube is injection molded by mixing short fibers and plastic raw materials; the short fibers can be selected from various chemical fibers such as glass fibers, basalt fibers, aramid fibers, carbon fibers, silicon carbide fibers, polyester fibers, polypropylene fibers, acrylic fibers, or nylon fibers, or mixtures thereof; the plastic raw materials can be selected from polyethylene (PE), polypropylene (PP), or polyvinyl chloride (PVC), etc., or mixtures thereof.

[0091] In this embodiment, please refer to Figures 2 to 5 As shown, the feather shaft 210 is in the shape of a quadrangular pyramid as a whole, and has a feather shaft upper surface 210a, a feather shaft lower surface 210b, a feather shaft left end surface 210c and a feather shaft right end surface 210d (the front surface and the rear surface are not marked in the figure), the area of ​​the left end surface 210c is larger than the area of ​​the right end surface 210d, and the right end surface 210d is suitable for being flush with the top of the feather part 220, and the feather shaft upper surface 210a and the feather shaft lower surface 210b are isosceles trapezoidal; or, the cross-section of the feather shaft 210 can be square, rectangular, trapezoidal, circular, polygonal, etc.; it can be understood that the structure of the feather shaft 210 can also be truncated cone-shaped, multi-prism-shaped, etc.; preferably, the end of the feather shaft 210 located at the handle 212 is configured to facilitate the insertion of the handle 212 into the tip of the ball head 10, and the structure of the end can be conical, multi-prism-shaped, etc. according to the shape of the feather shaft 210;

[0092] Please continue to refer to Figure 1 The overall shape of the feather portion 220 includes but is not limited to the common badminton feather shapes, such as full circle, large square, medium square, small square and hunchback, etc.;

[0093] Please also refer to Figure 1 and Figure 7As shown, the components constituting the feather portion 220 include: a plurality of barbs 221, and the plurality of barbs 221 are preferably fixed to the feather shaft 210 in a manner of being arranged parallel to each other. In some preferred embodiments, the plurality of barbs 221 are respectively bonded to the feather connection portion 220 in a direction of a preset angle α with the feather shaft 210, and the angle α is ≤ 90°. In particular, in order to reduce the wind resistance of the artificial feather during flight and to better fit the flight form of a natural feather, the angle α between the plurality of barbs 221 and the feather shaft 210 is 30°-60°, and the angle α can be, for example, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc., but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable. More preferably, the angle α is 40°-50°. In this embodiment, the barbs 221 are wires, and the material of the wires is selected from polyamide fibers, polyolefin fibers, and acrylic fibers. , polyester fiber, or a combination of at least two thereof; the cross-section of the wire may be circular, rectangular, square, polygonal, etc.; for example, the cross-section of the wire is circular, and the cross-sectional diameter of the wire is 0.05-0.5 mm. The cross-sectional diameter of the wire may be, for example, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5 mm, etc., but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable; preferably, the cross-sectional diameter of the wire is 0.08-0.3 mm, so that the feather portion 220 is lighter and has better overall aerodynamic performance during flight; in a preferred embodiment, the cross-section of the feather branch 221 gradually decreases along its extension direction, for example, the feather branch 211 is a type of prism structure, including a first root connected to the feather connecting portion 220, and the feather branch 211 of the type of prism structure gradually tapers from the first root to the tip.

[0094] Further references Figure 7As shown, each of the barbs 221 has two opposite side surfaces 221a and 221b, and the barbs 221 have twig portions 222 that are in the same plane as the barbs 221 and have an extension direction different from that of the barbs 221. The twig portions 222 and the barbs 221 are in the same plane, which is beneficial to reducing air resistance. At the same time, the twig portions 222 fully fill the gaps between adjacent barbs 221 to prevent a large amount of airflow from flowing through the gaps between the barbs 221, thereby making the overall aerodynamic performance of the barbs 220 better during flight. In this embodiment, each barb 221 has two opposite side surfaces 221a and 221b, and the twig portions 2 22 are respectively planted on the two opposite side surfaces 221a and 221b; in other embodiments, the twigs 222 can all be planted on the same side, such as only on the side surface 221a; it can be adaptively adjusted according to the needs of the actual process; but it should be noted that, relatively speaking, the twigs 222 on each barb 221 included in each feather portion 220 are preferably arranged in a unified manner. For example, in a badminton, the twigs 222 on each barb 221 are all arranged on both sides, or are all arranged on one side, but a mixed manner is not excluded; in a preferred embodiment, the twigs 222 on each barb 221 are all arranged on both sides, refer to Figure 7The twigs 222 on both sides of the opposite surface are all comb-tooth structures, and the tooth-like parts of their respective comb-tooth structures are embedded in the gaps of the relative tooth-like structures, so as to better prevent a large amount of airflow from flowing through the gaps between the feather branches 221, so that the overall aerodynamic performance of the feather part 220 during flight is better; in this embodiment, the twigs 222 are filaments, and the material of the filaments is selected from any one of polyamide fibers, polyolefin fibers, acrylic fibers, and polyester fibers, or a combination of at least two thereof; the cross-section of the filaments can be Preferably, the cross-section of the filament is circular, and the cross-sectional diameter of the filament is 0.03-0.5 mm. The cross-sectional diameter of the filament can be, for example, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5 mm, etc., but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable; it is worth noting that the cross-sectional area of ​​the filament is preferably smaller than the cross-sectional area of ​​the wire used for the feather 221. For example, the cross-section of the filament is circular, and the cross-sectional diameter of the filament is 0.03-0.3mm, and more preferably, the cross-sectional diameter of the filament is 0.03-0.2mm; in a preferred embodiment, the cross-section of the twig portion 222 gradually decreases along its extension direction, for example, the twig portion 222 is a conical structure, including a second root portion connected to the feather branch 221, and the twig portion 222 of the conical structure gradually tapers from the second root portion to the tip; more preferably, the twig portion 222 is a flat structure and the cross-section gradually decreases along its extension direction, so as to reduce the lateral wind resistance; for example, the flat structure can be an elliptical shape, etc.; in particular, the flat structure can be a structure in which the thickness gradually decreases from the middle to both sides, or the thickness gradually decreases in the direction away from the feather shaft 210, so as to further reduce the wind resistance and improve the flight effect.

[0095] In some preferred embodiments, two ends of the twig portion 222 are respectively fixed on two adjacent feather branches 221, so that the entire feather portion 220 can be more integrated, taking into account both flexibility and stability.

[0096] In one embodiment, the feather joint 211 can be bent along the extension direction of the feather shaft 210. The arc formed by the bending, combined with the feather part 220 structure with the twig part 222, can make the badminton using the artificial feather of the present invention more stable in flight compared with other badmintons made of artificial feathers. Moreover, based on these structures, the feather joint 211 has a certain curvature, which is more conducive to controlling the flight direction and landing point of the ball, because the aerodynamic effect generated by the bendable feather shaft 210 when hit makes it easier for athletes to adapt and achieve more precise control of the landing point of the badminton by adjusting the strength and angle of the hit.

[0097] refer to Figure 8 As shown, this embodiment provides an artificial badminton, including a ball head 10, and a plurality of artificial feathers 20 connected to the ball head 10, wherein the artificial feathers 20 are constructed as described above;

[0098] The present invention provides a method for manufacturing the artificial badminton of the first embodiment, comprising the following steps:

[0099] Step S1, preparing feather rachis;

[0100] In this embodiment, the method for preparing the feather rachis comprises the following steps:

[0101] S11. Select a core material mold according to the specifications and size of the feather shaft to be produced. The core material mold can be a slender rod-shaped structure, which is used to roll the carbon fiber cloth and pressure belt required for preparing the badminton feather shaft to shape the carbon fiber cloth; wherein, optionally, one end of the core material mold is formed with a T-shaped fixing portion to facilitate holding or fixing the core material mold, conveniently moving the mold or facilitating the rolling operation; preferably, the core material mold is a metal iron core mold or a fiberglass mold.

[0102] S12, prepare carbon fiber cloth. According to the specifications, size and performance requirements of the feather shaft to be produced, select the appropriate type and angle of carbon fiber cloth, and cut it into suitable sizes. Preferably, the carbon fiber cloth is folded into double layers of 0°, 19°, 30°, and 45° according to the structure for standby use. Preferably, the carbon fiber cloth is FAW10-50.

[0103] S13, applying a release agent and a carbon fiber cloth adhesive on the surface of the core material mold, and rolling the prepared carbon fiber cloth on the outer surface of the core material mold based on the core material mold to form a carbon rod structure that is completely consistent with the size and shape of the middle tube standard part;

[0104] S14, winding a pressure belt on the outer surface of the rolled carbon rod structure. The pressure belt starts from one end of the carbon rod structure close to the upper part of the core material mold, and is wound to one end of the carbon rod structure close to the lower part of the core material mold.

[0105] S15. The carbon rod structure and the pressure belt are sealed at one end close to the lower part of the core material mold, so that during the solidification process of the carbon rod structure, the external environment outside the pressure belt cannot be connected to the carbon rod structure through the carbon rod structure and the lower end of the pressure belt. Specifically, when the pressure belt is wound to the lower end of the carbon rod structure, the pressure belt can continue to be wound downward along the core material mold, so that the pressure belt and the core material mold are sealed, and the sealing of the lower end of the carbon rod structure is achieved through the structure of the pressure belt itself.

[0106] Preferably, the pressure belt is made of a material that shrinks when exposed to heat, such as OPP material, and is in the shape of an elongated belt with self-adhesive adhesive to facilitate winding and achieve a good sealing effect.

[0107] Of course, other methods can also be used to achieve the sealing effect of the carbon rod structure and the lower end of the pressure belt. For example, after the pressure belt is wrapped around the lower end of the carbon rod structure, a sealing silicone sleeve or a sealing film or other sealing structure is installed at the lower end of the carbon rod structure and the pressure belt, so that the lower end of the carbon rod structure and the pressure belt is sealed and connected to the core material mold to prevent the lower end of the carbon rod structure from being connected to the external environment through the lower end of the pressure belt.

[0108] S16, pressurizing and heating the carbon rod structure wrapped with the pressure belt and the core material mold to solidify the carbon fiber cloth and resin constituting the carbon rod structure.

[0109] Specifically, the carbon rod structure wrapped with the pressure belt is placed in an autoclave together with the core material mold, and the autoclave is pressurized and heated. The pressure belt shrinks when heated, and then exerts pressure on the carbon rod structure wrapped in the pressure belt, and the carbon fiber cloth and resin constituting the carbon rod structure are solidified under the action of heat and pressure.

[0110] In addition, since the autoclave also has a high pressure, a uniform pressure will be applied to the outside of the pressure belt. On the one hand, the pressure in the autoclave will increase the pressure value of the carbon fiber cloth and the resin during the curing process, thereby enhancing the curing effect of the carbon fiber and the resin, and improving the strength and impact resistance of the feather shaft; on the other hand, the pressure in the autoclave can prevent the outer surface of the carbon rod structure from leaving any entanglement marks caused by the contraction of the pressure belt, thereby eliminating the need for subsequent grinding of the center tube. This is because the pressure in the autoclave applies a uniform pressure to the outer surface of the pressure belt, making the pressure applied by the pressure belt to the outer surface of the carbon rod structure more stable and uniform, thus avoiding the problem of entanglement marks caused by high local pressure and low local pressure when the pressure belt contracts; at the same time, since the carbon rod structure in the pressure belt is also subjected to the pressure from the autoclave as a whole, the reaction force of the carbon fiber cloth and the resin on the inner side of the pressure belt is reduced, which also helps to reduce or avoid the problem of entanglement marks.

[0111] In another preferred embodiment, the method for preparing the rachis comprises the following steps:

[0112] S11', firstly, a foaming material is made as a core material by foaming molding. Specifically, a foaming agent (or foaming powder) is added to a plastic material, and foamed in a mold to form a foaming material layer. The mold used for foaming molding has the shape of a feather shaft. In other words, the foaming material of the present embodiment is formed by foaming a plastic material, and the plastic material contains a foaming agent. The plastic material can be modified polypropylene, such as PP-T series, PP-GF series (glass fiber reinforced polypropylene) and PP-LGF series (long glass fiber reinforced polypropylene); it can also be nylon (PA), such as PA6, PA66 and its glass fiber reinforced PA, such as PA6-GF, PA66-GF, etc.; it can also be polybutylene terephthalate (PBT) and its modified materials, such as PBT+GF (glass fiber reinforced PBT), etc.; or it can be polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), polystyrene (PS) and other modified plastics, and the other modified plastics can be alloy materials such as polyphenylene ether+nylon (PPO+PA), polycarbonate+acrylonitrile-butadiene-styrene (PC+ABS).

[0113] S12', after the foaming material is formed, the carbon fiber cloth is formed on the outside of the foaming material to form the feather shaft. In other embodiments, the foaming material and the carbon fiber cloth can also be heated or pressurized at the same time. In this embodiment, in addition to using carbon fiber cloth, it can also be formed by stacking at least one carbon fiber cloth and at least one glass fiber cloth. In other words, the carbon fiber cloth and the glass fiber cloth are formed by prepreg lamination to form the outer wrapping layer of the foaming material. In particular, this embodiment can directly use glass fiber prepreg cloth and carbon fiber prepreg cloth, and carefully laminate the glass fiber prepreg cloth and the carbon fiber prepreg cloth (with the glass fiber cloth in the inner layer and the carbon fiber cloth in the outer layer), and then fix the glass fiber cloth and the carbon fiber cloth by heating or pressurizing to form the wrapping layer of this embodiment. This embodiment achieves a lightweight effect through the foaming material, and the carbon fiber cloth of the wrapping layer provides rigidity and the glass fiber cloth provides toughness, thereby making the feather shaft more similar to the hair stem of a natural feather in weight and performance.

[0114] In another preferred embodiment, the method for preparing the rachis comprises the following steps:

[0115] S11”, providing foaming material and carbon fiber cloth as core material;

[0116] S12", wrapping the carbon fiber cloth on the outside of the core material;

[0117] S12", placing the wrapped material in a molding die, heating, and cooling to obtain a feather shaft.

[0118] In another preferred embodiment, the method for preparing the rachis comprises the following steps:

[0119] S11'', mixing the staple fibers with the plastic raw material; preferably, the specific gravity of the staple fibers and the plastic raw material is 1.0-1.4, so that the specific gravity of the prepared sample can be 1.20-1.24, more preferably 1.22;

[0120] S12"', injecting the mixed material into a mold using an injection molding machine, and taking it out after cooling to obtain a feather shaft;

[0121] The staple fiber can be selected from glass fiber, basalt fiber, aramid fiber, carbon fiber, silicon carbide fiber, polyester fiber, polypropylene fiber, acrylic fiber, nylon fiber and other chemical fibers, or a mixture thereof; the plastic raw material can be selected from polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), etc., or a mixture thereof. Preferably, the feather shaft 210 is a modified plastic tube with a diameter gradually changing from thick to thin from the handle 212 to the feather joint 211; the modified plastic tube is a hollow structure at the handle 212, and the feather joint 211 is a solid structure.

[0122] In addition, the feather shaft preparation method can also be: select a pressed carbon plate for cutting to obtain a hair stem, stack the carbon fiber prepreg in the same direction, place it in a mold and press it at high temperature to form a thickness of 0.5-1.0mm, and then cut the carbon plate to obtain a feather shaft rough blank.

[0123] Step S2, preparing barbs and twigs;

[0124] In this embodiment, the method for preparing the barbs and twigs comprises the following steps:

[0125] S21, providing a polypropylene resin and a processing aid, wherein the polypropylene resin is preferably a high molecular weight, low melt index polypropylene resin to ensure the strength and toughness of the wire drawing;

[0126] S22, adding polypropylene resin and processing aid into a high-speed mixer according to proportion, stirring and mixing them fully to ensure that the raw materials are evenly distributed;

[0127] S23, adding the mixed raw materials into a single-screw or twin-screw extruder; the raw materials are melted and plasticized by heating and the rotation of the screw;

[0128] S24, forming the molten polypropylene resin into filaments through a die head of an extruder;

[0129] S25, cooling and shaping the extruded filament product through a cooling water tank;

[0130] S26, according to the specifications and sizes of the barbs and twigs to be produced, the filamentary product after cooling and shaping is stretched through a traction device to form a filamentary product that completely matches the diameter and length of the barbs and twigs standard parts;

[0131] In another embodiment, the method for preparing the feather portion includes: using an electrostatic generator to carry opposite charges on the barbs and twigs, for example, the barbs are loaded with positive charges, while the barbs are loaded with negative charges, thereby fixing and adsorbing the two under the action of electrostatic force.

[0132] Step S3, preparing the feather part;

[0133] The preparation method of the feather part comprises the following steps:

[0134] S31, applying adhesive on one side or two opposite sides of the barb;

[0135] S32, planting the twigs in sequence on one side or two opposite sides of the barb coated with an adhesive;

[0136] Step S4, fixing the feather part to the feather shaft, comprises the following steps:

[0137] Providing a feather shaft, wherein the feather shaft has a feather connecting portion and a handle connected to the feather connecting portion;

[0138] An adhesive layer is formed on the upper surface of the feather joint, or on the left and right end surfaces. In a specific implementation, an adhesive may be applied on the feather joint from the end away from the handle toward the end close to the handle;

[0139] Provide a feather department;

[0140] The feather part is bonded to the bonding layer to obtain a rough artificial feather; the feather part can be arranged on the bonding layer in such a way that the barbs are laid out in parallel in sequence (e.g., the angle α between the barbs and the rachis is 90°, or in a V-shaped structure), or laid out on both sides in a bilaterally symmetrical manner (e.g., the angle α between the barbs and the rachis is 90°, or in a V-shaped structure), and the angle α between the barbs and the rachis corresponding to the V-shaped structure can be 30°-60°;

[0141] Baking the crude artificial feather to obtain artificial feather for badminton; preferably, the baking step includes firstly performing low-temperature baking to promote the curing of the glue, and then performing high-temperature baking, the temperature of the high-temperature baking is, for example, 80° C., and the curing temperature and duration of the low-temperature baking can be adaptively adjusted according to the properties of the selected glue;

[0142] Furthermore, the rough artificial feathers are cut to obtain different feather shapes such as full circle, large square, medium, small square and humpback, thereby obtaining artificial feathers.

[0143] Step S5, preparing an artificial badminton, comprising the following steps:

[0144] S51, providing a plurality of artificial feathers and ball heads as described above;

[0145] The manufacturing method of the ball head can use any method known in the past, for example, natural materials such as cork can be used as the material for forming the ball head. In addition, artificial resins and the like can also be used as the material for the ball head. When artificial resins are used as the material for the ball head, any processing method known in the past can be used to form the ball head. For example, first, a block of the material for forming the ball head is prepared, and the desired shape is formed by cutting. At this time, the height of the hemispherical part of the front end is taken into consideration. Then, the method of further forming an insertion hole for inserting artificial feathers by cutting can also be used. In addition, when the above-mentioned artificial resins are used, for example, ionomer resin foam, or EVA (ethylene vinyl acetate copolymer), polyurethane, PVC (polyvinyl chloride), polyethylene, polypropylene, etc. can be used.

[0146] S52, inserting the artificial feather into the ball head and bonding and fixing it.

[0147] Fig. 9 A schematic diagram of the structure of an artificial feather for badminton provided in a second embodiment of the present invention; Fig.10 A right side view of an artificial feather for badminton provided by a second embodiment of the present invention; Fig.11 A right side view of an artificial feather shaft for badminton provided in accordance with a second embodiment of the present invention; Fig.12 A front view of an artificial feather shaft for badminton provided in accordance with a second embodiment of the present invention; Fig.13 for Fig.12 The enlarged schematic diagram of point B in the middle; Fig.14 for Fig.12 An enlarged schematic diagram of another deformed structure at B in the middle; Fig.15 A schematic structural diagram of an artificial badminton provided by a second embodiment of the present invention;

[0148] Please also refer to Fig. 9 and Fig.10 As shown, the artificial feather provided in this embodiment mainly includes a feather shaft 210 and a feather part 220;

[0149] The components constituting the feather part include: a plurality of feathers 221, each feather 221 having a twig part 222 which is in the same plane as the feather 221 and has an extension direction different from that of the feather 221;

[0150] The feather shaft 210 is used to support the feather part 220, and the feather shaft 210 has a feather connecting part 211 and a handle part 212 connected to the feather connecting part 211;

[0151] Please also refer to Figures 11 to 13 As shown, the feather joint 211 has a first side surface 211a and a second side surface 211b opposite to each other;

[0152] The first side surface 211a is recessed inwardly to form one or more first recessed portions 2111 for inserting the barbs 221; the second side surface 211b is recessed inwardly to form one or more second recessed portions 2112 for inserting the barbs 221;

[0153] In this embodiment, the first side surface 211a is recessed inwardly to form a continuous first recessed portion 2111. Figure 8 and Fig. 9 The first recessed portion 2111 starts at the junction of the handle 212 and the feather connecting portion 211 and ends at the extension end of the feather connecting portion 211. A plurality of feather branches 221 can be inserted and fixed in the first recessed portion 2111. The second recessed portion 2112 is located on the second side surface 211b and is symmetrically arranged with the first recessed portion 211.

[0154] In particular, please refer to Fig.14 As shown, the first recessed portion 2111 and the second recessed portion 2112 may be configured as structures that facilitate the engagement of the barbs 221, so as to facilitate the insertion and fixation of the barbs 221. For example, slots may be provided in the recessed portions so that the barbs 221 may be directly inserted thereinto and fixed therein. For another example, the width of the recessed portions may be adapted to the cross-sectional width of the barbs 221.

[0155] refer to Figures 9 to 11 and Fig.15 As shown, this embodiment provides an artificial badminton, including a ball head 10, and a plurality of artificial feathers 20 connected to the ball head 10; the preparation method thereof is referred to as described above; it is worth noting that, for the first recessed portion 2111 and the second recessed portion 2112 of this embodiment, the adhesive can be directly applied to the first recessed portion 2111 and the second recessed portion 2112, and then the barbs 221 are implanted into the recessed portions, so that the barbs 221 are fixedly connected to the barb connecting portion 211, thereby improving the stability of the barb 220.

[0156] Fig.16 A schematic diagram of the structure of an artificial feather for badminton provided in a third embodiment of the present invention; Fig.17 A right side view of an artificial feather for badminton provided in accordance with a third embodiment of the present invention; Fig.18 A schematic structural diagram of an artificial feather shaft for badminton provided in a third embodiment of the present invention; Fig.19 A front view of an artificial feather shaft for badminton provided in accordance with a third embodiment of the present invention; Fig. 20 for Fig.19 Schematic diagram of the enlarged structure at C in the middle;

[0157] Fig.21 A schematic structural diagram of an artificial feather shaft for badminton provided in a modified example of the third embodiment of the present invention; Fig. 22 for Fig.21 Schematic diagram of the enlarged structure at D in the middle; Fig.23 A schematic diagram of the structure of an artificial feather for badminton provided in a modified example of the third embodiment of the present invention; Fig.24 for Fig.23 The enlarged structural diagram at F in the middle; Fig.25 A schematic structural diagram of a badminton provided by a third embodiment of the present invention;

[0158] Please refer to Fig.16 As shown, the artificial feather provided in this embodiment mainly includes a feather shaft 210 and a feather part 220;

[0159] The components constituting the feather part include: a plurality of feathers 221, each feather 221 having a twig part 222 which is in the same plane as the feather 221 and has an extension direction different from that of the feather 221;

[0160] Please also refer to Fig.17 and Fig.18 As shown, the feather shaft 210 is used to support the feather part 220, and the feather shaft 210 has a feather connecting part 211 and a handle part 212 connected to the feather connecting part 211;

[0161] refer to Fig.19 and Fig. 20 As shown, the upper surface 210a of the rachis 210 includes at least one step surface that is not in the same plane, and the level of the upper surface 212a of the shank is higher than the level of the upper surface 211a of the feather joint 211.

[0162] In a preferred embodiment, the height difference between the upper surface 212a of the handle and the upper surface 211a of the feather joint 211 is h, and 0.02mm≤h≤0.5mm. The height difference h can be 0.02, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5mm, etc., but is not limited to the listed values. Other values ​​not listed in the numerical range are also applicable.

[0163] In some embodiments, the height difference between the upper surface 212a of the handle and the upper surface 211c of the feather joint 211 is h, and 0.02mm≤h<0.2mm;

[0164] In a more preferred embodiment, the height difference between the upper surface 212a of the handle and the upper surface 211c of the feather joint 211 is h, and 0.2mm≤h≤0.5mm; preferably, please also refer to Figure 21 to Figure 22 As shown, a fixing sheet 30 is provided on one side of the barb 221 close to the barb joint 211, so that the barb 221 is sandwiched between the fixing sheet 30 and the barb joint 211, thereby increasing the stability of the barb 221; preferably, the fixing sheet 30 can be a carbon sheet, or fiber, or plastic, or a composite material thereof, which has a light weight. Preferably, the thickness of the fixing sheet is 0.05-0.5 mm, and the thickness of the fixing sheet 30 can be, for example, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.4 5, 0.5mm, etc., but are not limited to the listed values, and other values ​​not listed within the numerical range are also applicable; more preferably, the thickness of the fixing plate 30 is 0.05-0.3mm; the setting of the fixing plate 30 is conducive to improving the flatness of the side surface, thereby reducing wind resistance and improving the stability of badminton flight; in a preferred embodiment, the cross-section of the fixing plate 30 is gradually reduced along its extension direction, for example, it can be a more preferred, the fixing plate 30 can also be a flat structure and the cross-section is gradually reduced along its extension direction, so as to reduce wind resistance; in other embodiments, please also refer to Figure 23 to Figure 24 As shown, the fixing plate 30 can be an integrated structure or a split structure. The split structure can be, for example, a left-right structure. The left fixing plate and the right fixing plate are fixed by gluing or the like so that the feather branches 221 on the left and right sides are sandwiched between the fixing plate 30 and the feather joint 211, thereby further reducing the weight of the artificial feather 20 and ensuring the stability of the overall structure.

[0165] refer to Fig.25 As shown, this embodiment provides an artificial badminton, including a ball head 10, and a plurality of artificial feathers 20 connected to the ball head 10; the preparation method thereof is referred to as described above, and it is worth noting that in this embodiment, the adhesive is preferably applied to the upper surface 211c of the feather connection portion, and then the feather branch 221 is adhered to the upper surface 211c of the feather connection portion, thereby improving the stability of the feather portion 220; based on this, when the horizontal difference height h≥0.2mm, the stability of the feather branch 221 in adhering to the upper surface 211c of the feather connection portion can be better, and the feather branch 221 itself is not easy to break.

[0166] Preferably, the height difference between the upper surface 221c of the barb and the upper surface 212a of the shank is h1, and the height difference between the lower surface 221d of the barb and the lower surface 211d of the barb joint is h2, and h2>h1, thereby improving the flight characteristics.

[0167] Fig.26 A schematic diagram of the structure of an artificial feather for badminton provided in a fourth embodiment of the present invention; Fig. 27 for Fig.26 A magnified schematic diagram of the structure at G in the middle; Fig. 27 A right side view of an artificial feather for badminton provided in accordance with a fourth embodiment of the present invention; Fig.28 A bottom view of an artificial feather for badminton provided in accordance with a fourth embodiment of the present invention; Fig.29 A schematic structural diagram of a badminton provided by a fourth embodiment of the present invention;

[0168] In this embodiment, the artificial feather 20 mainly includes a feather shaft 210 and a feather part 220;

[0169] Please also refer to Figure 26 to Figure 29 As shown, the feather shaft 210 is used to support the feather part 220, and the feather shaft 210 has a feather connecting part 211 and a handle part 212 connected to the feather connecting part 211; the feather part 220 is fixed to the feather connecting part 211;

[0170] The feather shaft 210 is a carbon fiber hollow tube with a diameter gradually changing from thick to thin from the handle 212 to the feather joint 211. The handle 212 of the feather shaft 210 is a hollow structure, and the feather joint 211 is a solid structure.

[0171] The preparation method of the feather shaft 210 includes:

[0172] Providing an inner core and feather shaft mold;

[0173] The inner core is placed in the feather shaft mold and then injection molding is performed to obtain a feather shaft with at least a partially hollow structure.

[0174] In this embodiment, the inner core is placed at the handle in the rachis mold, thereby forming a rachis 210 in which the handle 212 is a hollow structure and the rachis joint 211 is a solid structure.

[0175] In a preferred embodiment, the rachis 210 has a certain bow outwardly along the shank 212 toward the feather joint 211; specifically, at least part of the upper surface 210a of the rachis is concave; it can be that the upper surface 212a of the shank and the upper surface 211c of the feather joint are concave as a whole to have a certain bow, or it can be that only the upper surface 211c of the feather joint is concave and has a certain bow; the bow refers to the deviation of the rachis 210 in the direction of the plane where the x-axis and the z-axis are located; preferably, the absolute value of the bow is less than 0.8 cm.

[0176] The components constituting the feather portion 220 include resin and a plurality of unidirectional or multidirectional fibers coated with the resin, wherein the plurality of unidirectional or multidirectional fibers form a mesh or sheet structure, wherein the mesh or sheet structure formed by the plurality of unidirectional or multidirectional fibers has a plurality of gaps 23 between them, and each of the gaps 23 is filled with the resin; preferably, the fibers may be fiber filaments or fiber bundles.

[0177] In this embodiment, the preparation method of the feather portion 220 includes:

[0178] S21', providing a plurality of fibers; preferably, the fibers may be fiber filaments or fiber bundles, and the fiber material used may be glass fiber, basalt fiber, aramid fiber, carbon fiber, silicon carbide fiber, polyester fiber, polypropylene fiber, acrylic fiber, nylon fiber, or other chemical fibers, or a mixture thereof;

[0179] S22', making a number of the fibers into a mesh or sheet, and then impregnating them with resin and curing them to obtain feathers; preferably, the fibers are made into a mesh or sheet by, for example, laying them flat or weaving them; preferably, the resin can be a thermoplastic resin or a thermosetting resin, and the thermoplastic resin can be selected from any one of the following or a mixture thereof: nylon, polyethylene, polypropylene, polyvinyl chloride, acrylonitrile-butadiene-styrene, polystyrene, polyformaldehyde, polycarbonate, polyurethane, polytetrafluoroethylene, polyethylene terephthalate, polyphenylene sulfide or polyetheretherketone, etc.; the thermoplastic resin can be selected from any one of the following or a mixture thereof: epoxy resin, unsaturated resin, polyurethane resin, polyimide resin, urea-formaldehyde resin, phenolic resin, etc.

[0180] In a preferred embodiment, reference Fig.30As shown, a plurality of cutouts 223 extending from the edge of the feather portion 220 toward the center of the feather portion 220 are provided on the feather portion 220, and the provision of the cutouts 233 is mainly reflected in the optimization of air diversion. First, when the artificial feather flies in the air, the air will interact with the surface of the feather in a complex manner. If there are no cutouts, the air flow may generate turbulent vortices on the surface of the feather, resulting in an unstable flight trajectory or even a deviation. By providing cutouts on the feather feathers, the path of the air flow is redirected. These cutouts are like miniature guide grooves that can effectively divide the air into orderly airflows, reduce air resistance, and allow the air to slide more smoothly over the feather surface. This optimized air flow pattern allows the feather to move forward more smoothly during flight, avoiding unnecessary shaking or deviation caused by air resistance;

[0181] Secondly, the setting of the incision structure has a significant effect on correcting the flight trajectory and rotation. In actual sports, the flight trajectory and rotation speed of artificial feathers are affected by many factors, such as wind force, throwing force and angle. If the rotation speed of the feather is not enough or the flight trajectory deviates from expectations, its sports performance will be greatly reduced. At this time, the role of the incision is particularly important. When air passes through the incision, different air pressure differences are formed on both sides of the feather. This air pressure difference will produce a slight force, which can fine-tune the flight trajectory of the feather. For example, if the feather deviates sideways during flight, the air pressure difference generated by the incision can guide the feather to adjust in the correct direction and return it to the predetermined trajectory. At the same time, the incision can also play a key role in the problem of insufficient rotation speed. By further designing the position and shape of the incision, the rotational driving force of the air on the feather can be increased. When the air passes through the incision, it will drive the feather to accelerate rotation like a miniature turbine. This accelerated rotation not only enables the feather to fly more stably in the air, but also improves its controllability and precision in motion.

[0182] Preferably, reference Fig.30 As shown, the width n of the cutout 223 is between 0.05 cm and 0.3 cm.

[0183] refer to Fig.31 As shown, this embodiment provides an artificial badminton, including a ball head 10, and a plurality of artificial feathers 20 connected to the ball head 10;

[0184] It should be noted that the feather shaft 210 may also be other structures mentioned above, for example, the structure described in the second embodiment, wherein the feather joint 211 has a first side surface 211a and a second side surface 2221b opposite to each other, and the first side surface 211a is recessed inward to form one or more first recessed portions 2111 for the feather branch 221 to be inserted; the second side surface 2221b is recessed inward to form one or more second recessed portions 2112 for the feather branch 221 to be inserted, thereby, the feather portion 220 is composed of a first feather portion embedded in the first recessed portion 2111 and a second feather portion embedded in the second recessed portion 2112, and the first feather portion and the second feather portion are respectively a mesh or sheet structure with gaps formed by fibers impregnated with resin and solidified;

[0185] Similarly, for example, if the feather shaft 210 is of the structure described in the third embodiment, the interspaced mesh or sheet structure composed of resin-impregnated and cured fibers, namely the feather portion 220 , is fixed to the upper surface 211 c of the feather connection portion 211 .

[0186] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present invention can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0187] Although the terms such as ball head, artificial feather, rachis, feather joint, handle, feather part, barb, twig part, etc. are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention; the terms "first", "second", etc. (if any) in the description and claims of the embodiments of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0188] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing an artificial badminton shuttlecock, characterized in that: The following steps are involved: Providing a number of artificial feathers for badminton and hemispherical heads; The artificial feather is inserted into the ball head and bonded and fixed to obtain an artificial badminton ball.

2. The method for preparing an artificial badminton shuttlecock according to claim 1, characterized in that: The method for making artificial feathers for badminton comprises the following steps: Providing a feather shaft, wherein the feather shaft has a feather connecting portion and a handle connected to the feather connecting portion; Provide some fiber; The fibers are formed into a net or sheet, impregnated with resin and cured to obtain feathers; The feather part is fixed on the feather joint part to obtain an artificial feather for badminton.

3. The method for preparing an artificial badminton shuttlecock according to claim 1, characterized in that: The method for manufacturing artificial feathers for badminton comprises the following steps: Providing a feather shaft, wherein the feather shaft has a feather connecting portion and a handle connected to the feather connecting portion; Providing a plurality of barbs, each barb having a twig portion that is in the same plane as the barb and has an extension direction different from that of the barb; The barbs are fixed to the feather joints to obtain artificial feathers for badminton.

4. The method for preparing an artificial badminton shuttlecock according to claim 3, characterized in that: The method for manufacturing the barbs having twig portions comprises the following steps: Providing a barb and a plurality of twigs, wherein the twigs are fixed to the barb by an adhesive or an electrostatic field effect; Preferably, the feathers are wires, and the material of the wires is selected from any one of polyamide fibers, polyolefin fibers, acrylic fibers, and polyester fibers, or a combination of at least two thereof; Preferably, the twigs are filaments, and the material of the filaments is selected from any one of polyamide fibers, polyolefin fibers, acrylic fibers, and polyester fibers, or a combination of at least two of them.

5. The method for preparing an artificial badminton shuttlecock according to any one of claims 2 to 4, characterized in that: The method for preparing the feather rachis comprises the following steps: Provide core material mold; Rolling the carbon fiber cloth onto the core material mold to form a carbon rod structure; Winding a pressure belt on the outer surface of the carbon rod structure; The carbon rod structure wrapped with the pressure belt and the core material mold are placed in a pressurized heating device for pressurization and heating to solidify the carbon rod structure; The pressure belt outside the carbon rod structure is removed, and the core material mold in the carbon rod structure is extracted to obtain the feather shaft; Preferably, the core material mold is an iron core mold, and the pressure belt is an OPP belt; Preferably, the upper surface of the rachis includes at least one step surface that is not in the same plane, and the upper surface of the handle is higher than the upper surface of the feather joint; Preferably, the barb joint has a first side surface and a second side surface opposite to each other; the first side surface is recessed inwardly to form one or more first recessed portions for inserting the barbs; and the second side surface is recessed inwardly to form one or more second recessed portions for inserting the barbs.

6. The method for preparing an artificial badminton shuttlecock according to any one of claims 2 to 4, characterized in that: The method for preparing the feather rachis comprises the following steps: Provide core material and carbon fiber cloth; Wrapping the carbon fiber cloth on the outside of the core material; The wrapped material is placed in a forming mold for heating and cooling to obtain a feather shaft; Preferably, the core material is a foam material; Preferably, the upper surface of the rachis includes at least one step surface that is not in the same plane, and the upper surface of the handle is higher than the upper surface of the feather joint; Preferably, the barb joint has a first side surface and a second side surface opposite to each other; the first side surface is recessed inwardly to form one or more first recessed portions for inserting the barbs; and the second side surface is recessed inwardly to form one or more second recessed portions for inserting the barbs.

7. The method for preparing an artificial badminton shuttlecock according to any one of claims 2 to 4, characterized in that: The method for preparing the feather rachis comprises the following steps: Providing an inner core and feather shaft mold; The inner core is placed in the feather shaft mold and then injection molding is performed to obtain a feather shaft with at least a partially hollow structure.

8. The method for preparing an artificial badminton shuttlecock according to claim 7, characterized in that: The inner core is placed at the handle in the feather shaft mold, so that the handle is a hollow structure after injection molding.

9. The method for preparing an artificial badminton shuttlecock according to claim 7, characterized in that: The raw materials for injection molding include short fibers and plastic materials; Preferably, the staple fibers are selected from any one of glass fibers, basalt fibers, aramid fibers, carbon fibers, silicon carbide fibers, polyester fibers, polypropylene fibers, acrylic fibers, or nylon fibers, or a combination of at least two thereof; Preferably, the plastic material is selected from any one of polyethylene, polypropylene, polybutylene terephthalate, polycarbonate, acrylonitrile-butadiene-styrene, polystyrene, polyvinyl chloride or modified materials thereof, or a combination of at least two thereof.

10. The method for preparing an artificial badminton shuttlecock according to claim 7, characterized in that: The specific gravity of the staple fibers to the plastic material is 1.0-1.4.

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