Simulated badminton feather piece and preparation method thereof

Abstract

The invention discloses a simulated shuttlecock feather piece and a preparation method thereof, the simulated shuttlecock feather piece comprises a feather stem and a feather piece, the feather piece is arranged on the end side, away from a shuttlecock head, of the feather stem, the cross section of the feather piece is gradually widened in the direction, away from the shuttlecock head, of the feather stem, and the cross section of the feather piece is gradually shrunk in the direction, close to the shuttlecock head, of the feather stem; the feather pieces are made of polypropylene and ABS resin materials; the feather piece further comprises a plurality of feather branches, a preset angle is formed between the feather branches and the central axis of the feather stem, the preset angle is 30-50 degrees, and the distribution density of the feather branches on the feather piece is 2-4 / mm. According to the preparation method disclosed by the invention, by comprehensively considering a plurality of links such as material selection, mold design, injection molding, feather piece cutting by a specially-made blade array assembly, post-treatment and the like, high strength, light weight and excellent flight performance of the badminton feather piece are realized, and strict requirements of high-level athletes on badminton performance are met; and meanwhile, better market competitiveness is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of badminton, in particular to a simulated badminton feather piece and a preparation method thereof. Background Art

[0002] Existing artificial, simulated badminton feathers, such as the Victory Carbon Sound PRO, while morphologically similar to natural shuttlecocks, still suffer from several key flaws and limitations. These flaws primarily manifest in a poor feel and a less than crisp sound, as well as the sharpness of the carbon fiber shaft, which can cause paint loss or damage to the racket's wire. These shortcomings make it difficult for elite players and enthusiasts to meet the stringent performance requirements of badminton. In particular, their "integrated" feather structure, while fully replicating the morphological characteristics of natural feathers, lacks the microstructure of the forked bristles at the shank. This structural defect prevents the formation of the "braid tip effect" at impact, preventing the crisp "sonic boom" similar to the whip effect at impact. This results in a muffled sound and lacks the feel of a natural shuttlecock. Furthermore, due to structural limitations, existing artificial feather-based shuttlecocks exhibit insufficient or even no "convergence" deformation, preventing the feathers from forming a streamlined, inward-converging posture. This results in a sudden increase in flight resistance and poor flight stability. This structural deficiency results in a significant difference in flight performance from a natural shuttlecock, affecting the shuttlecock's flight efficiency and controllability. The manufacturing method for existing artificial shuttlecocks is complex and the production cost is high. Summary of the Invention

[0003] The embodiment of the present invention provides a simulated badminton feather piece and a preparation method thereof, so as to solve the problem of limitations in the flight performance and hitting feel of artificial feather badminton in the prior art.

[0004] A simulated badminton feather comprises a stalk and vanes arranged on opposite sides of the stalk. The vanes are arranged on the end of the stalk away from the ball head. The vanes include a base portion, a middle stabilizing portion, and a tip optimization portion connected in sequence. The tip optimization portion is arranged at the end of the stalk away from the ball head. The vanes are made of polypropylene and ABS resin materials. The vanes also include a plurality of barbs. The barbs form a preset angle with the central axis of the stalk, the preset angle being 30-50 degrees. The distribution density of the barbs on the vane is 2-4 barbs / mm.

[0005] Optionally, the cross section of the vane gradually widens from the base to the end of the middle stabilizing portion; and the cross section of the vane gradually narrows from the tip optimization portion to the end of the middle stabilizing portion.

[0006] Optionally, the thickness of the base is 0.25-0.3 mm, the thickness of the middle stabilizing portion is 0.2-0.25 mm, and the thickness of the tip optimization portion is 0.15-0.25 mm.

[0007] The present invention also provides a method for preparing a simulated badminton feather piece, comprising the following steps:

[0008] S1, selecting raw materials for making rough sheets and pre-processing the raw materials;

[0009] S2. Perform 3D modeling, design the mold shape and size, and perform hard chrome plating or nitriding treatment on the mold;

[0010] S3. Set the injection molding parameters, inject the raw materials into the mold, and use multi-stage injection molding technology to mold the finished product into a rough piece;

[0011] S4, deburring and annealing the finished rough piece, cooling and shaping;

[0012] S5. Using a blade array assembly, the vanes of the finished feather piece are obliquely cut into vanes with a barb density of 2-4 barbs / mm.

[0013] The present invention achieves high strength, lightweight, and excellent flight performance in badminton feathers through multi-step collaborative optimization. The mold design utilizes a gradient thickness structure and precision machining techniques to ensure a progressive adaptation of the vane's structural strength and aerodynamic performance from base to tip. The injection molding process precisely controls material flow and cooling through segmented injection and a temperature control system, ensuring the microscopic precision of the vane's gradient thickness and barb angles. Post-processing incorporates deburring, annealing, and uniform cooling to eliminate internal stress and maintain the vane's morphological stability. A unique cutting array, with a high-density oblique barb layout (2-4 bars / mm) and a preset 30-50° angle, simulates the whip effect and streamlined profile of a natural feather, reducing air resistance while improving energy transfer efficiency and directional control accuracy at the moment of impact. Furthermore, the integration of automated production compatibility into the process chain (e.g., in-mold gate cutting and CNC-controlled coordinated cutting) facilitates large-scale manufacturing. Ultimately, the finished product combines the feel of natural feathers with the durability of engineered materials, meeting the high standards for flight performance, control accuracy, and service life required of both professional and amateur badminton players. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 This is a schematic structural diagram of a simulated badminton feather piece in one embodiment of the present invention;

[0016] Figure 2 The present invention is a flowchart of a method for preparing a simulated badminton feather piece in one embodiment of the present invention.

[0017] 1- pedicel, 2- pinnae, 21- base, 22- middle stabilizing part, 23- tip optimizing part, 3- barb. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] In one embodiment, if Figure 1 As shown, a simulated badminton feather is provided, comprising a stalk and vanes 2 arranged on opposite sides of the stalk 1. The vanes 2 are arranged on the end side of the stalk 1 away from the ball head. The vanes 2 include a base 21, a middle stabilizing portion 22, and a tip optimization portion 23 connected in sequence. The tip optimization portion 23 is arranged at the end of the stalk 1 away from the ball head. The vanes 2 are made of polypropylene and ABS resin materials. The vanes 2 also include a plurality of barbs 3, the barbs 3 forming a preset angle with the central axis of the stalk 1, the preset angle being 30-50°, and the distribution density of the barbs 3 on the vanes 2 is 2-4 barbs / mm. The width of the stalk 1 gradually decreases along its central axis from the ball head to the vanes 2. The width D1 of the stalk 1 near the end of the ball head is 3.0-3.5 mm, and the width D2 of the stalk 1 near the end of the vane 2 is 1.0-1.2 mm. The overall length L of the peduncle 1 is 70-75 mm. The cross section of the vane 2 is divided into two parts. With a certain dividing point (which can be set as needed) on the vane 2 as the origin, the cross section of the vane 2 gradually widens from the ball end to the origin, and gradually narrows from the end of the vane 2 to the origin. The maximum width of the cross section of the vane 2 is 15-20 mm. L1 is the distance from the peduncle 1 to the end of the vane 2 closest to the ball end. The maximum length of the cross section of the vane 2 is the difference between L and L1, specifically 37-37.5 mm.

[0020] After the above-mentioned simulated badminton feathers are used to make a badminton, the full dynamic process of the badminton's hitting and flying is as follows:

[0021] First, when a shuttlecock made with this simulated badminton feather is struck, force first acts at the base of the vane 2, and the energy is transferred along the length of the vane 2 to the tip through the vane's gradient thickness design. At this point, the whip sheath effect kicks in. The obliquely cut barbs 3, with a density of 2-4 per mm, combined with the ultra-thin vanes 2, each 0.15-0.3 mm thick, precisely simulate the fine barb structure on either side of a natural feather's shaft. This bifurcated barb 3 layout creates a whip-like, rapid, reversing motion at the moment of impact. As the head drives the vanes 2 from forward to backward in a high-speed reversal, the dense barbs 3 on either side of the peduncle 1 swing rapidly into the air, producing a crisp "sonic boom" and giving the shuttlecock a crisp, striking sound. Furthermore, this density of barbs 3 allows the shuttlecock to disperse impact energy through friction between the barbs 3 during flight, preventing flight trajectory deviation caused by energy dispersion and significantly improving energy utilization and directional control accuracy at the moment of impact.

[0022] Then, as the shuttlecock's flight suddenly switches from "forward" to "backward," the vanes 2 trigger a "convergence and deformation" mechanism: The densely packed barbs 3 (2 to 4 per mm) form a tight comb-tooth structure when converging. Friction between adjacent barbs 3 limits lateral displacement, making the converging action more synchronized. The tilted angle of the barbs 3 causes them to naturally converge inward when subjected to force, rather than diverging outward. This further compresses the windward area at the moment of converging, dramatically reducing air resistance. Simultaneously, the backward-tilted barbs, combined with the elastic preload at the base of the barbs 3, enhance rotational stability. As the shuttlecock's speed decreases, the vanes 2 gradually rebound, relying on the elastic recovery force of their own material. The rational density and angle of the barbs 3 allow them to store elastic energy continuously during the recovery phase (approximately 0.3 seconds), maintaining a stable parabola in the final stage of flight. Compared to existing artificial shuttlecocks, which lack the convergence and deformation capabilities, this new barb 3 significantly improves flight performance and batting feel.

[0023] Furthermore, the array-cut vanes 2 distribute force more evenly when the shuttlecock is struck, preventing damage caused by localized excessive force. The obliquely arranged barbs 3 help optimize the shuttlecock's interaction with the air, reducing drag and turbulence during high-speed flight, thereby minimizing irregular vibration and deformation of the vanes 2. Furthermore, thanks to the polymer's mimicking capabilities, the barbs 3 maintain high strength while possessing moderate elasticity, maintaining efficient energy release at the moment of impact and enhancing the shuttlecock's durability and consistency.

[0024] In the present invention, multiple beneficial effects are achieved by designing ultra-thin vanes 2 with a gradient thickness and obliquely arranged barbs 3 with a density of 2-4 barbs / mm: when the badminton is hit, energy is efficiently transferred along the length direction of the vanes 2, and a crisp "sonic boom" is produced in conjunction with the whip sheath effect; the dense barbs 3 frictionally buffer and disperse the impact energy, avoiding trajectory deviation, thereby improving energy utilization and directional control accuracy; during return flight, the convergence and deformation mechanism compresses the windward area through the synchronous contraction of the comb structure of the vanes 2 and the oblique arrangement of the barbs 3, thereby reducing flight resistance; the oblique barbs 3, combined with the high strength and elasticity of the polymer material, optimize flight performance, significantly improving the durability, flight stability and hitting feel of the badminton, and meeting the strict requirements of high-level players and enthusiasts for badminton performance.

[0025] In one embodiment, if Figure 1 As shown, the cross section of the vane 2 gradually widens from the base 21 to the end of the middle stabilizing portion 22 ; and the cross section of the vane 2 gradually narrows from the tip optimization portion 23 to the end of the middle stabilizing portion 22 .

[0026] In one embodiment, the thickness of the base portion is 0.25-0.3 mm, the thickness of the middle stabilizing portion 22 is 0.2-0.25 mm, and the thickness of the tip optimization portion 23 is 0.15-0.25 mm.

[0027] In one embodiment, if Figure 2 As shown, the present invention also provides a method for preparing a simulated badminton feather piece, comprising the following steps:

[0028] S1. Select raw materials for making rough sheets and pre-treat the raw materials.

[0029] In one embodiment, step S1 further includes the following sub-steps:

[0030] S101. Select polypropylene and ABS resin materials according to product requirements to ensure that the raw materials have fluidity and moisture resistance;

[0031] S102: Dry the raw materials to remove moisture from the particles and prevent bubbles or silver streaks during the injection molding process. Control the moisture content of the raw materials to ensure the material's fluidity during the injection molding process and the dimensional stability of the final product. Dry polypropylene at 80-100°C for 2-4 hours to remove moisture. Dry ABS resin at 80-90°C for 3-4 hours to accommodate its temperature sensitivity. Color and mix the raw materials, adding color or functional masterbatches, and mix thoroughly using a twin-screw mixer.

[0032] Understandably, the choice of raw materials directly affects the physical properties (such as strength, toughness, elasticity) and chemical properties (such as moisture resistance and chemical corrosion resistance) of the wool piece; polypropylene (PP) has the characteristics of low cost, chemical corrosion resistance, and light weight, and is suitable for manufacturing disposable or cost-sensitive products; ABS resin material has the characteristics of high strength, high gloss, impact resistance, etc., and is suitable for manufacturing high-end products, providing better durability and appearance.

[0033] S2. Perform 3D modeling, design the mold shape and size, and perform hard chrome plating or nitriding treatment on the mold.

[0034] In one embodiment, step S2 further includes the following sub-steps:

[0035] S201, designing a mold to adapt to the gradual thickness of the feathers and the cutting angle of the feathers according to the flight characteristics and hitting requirements of the badminton;

[0036] S202. According to the shape and size of the mold, use CNC processing technology to rough-process the mold cavity and perform fine carving, with the tolerance controlled at ±0.02mm; mirror-polish the mold and install the temperature control system.

[0037] Understandably, based on the flight characteristics and striking requirements of badminton, the mold is specifically designed to match functional parameters such as the gradual thickness of the feathers and the cutting angle of the feathers, ensuring that the mold structure is highly compatible with the target feather performance. Through rough machining + fine carving (tolerance ±0.02mm), high-precision molding of the mold is achieved to ensure the consistency of the mold cavity size; mirror polishing reduces the surface roughness of the feathers and optimizes the demolding effect; the installation of the temperature control system stabilizes the injection molding process conditions and avoids quality fluctuations caused by abnormal material flow. Hard chrome plating or nitriding of the mold can improve the mold hardness, wear resistance and corrosion resistance, extend its service life, and improve the surface finish, further ensuring the appearance quality of the feathers. Installing a temperature control system can accurately control the temperature of the mold to ensure the fluidity of the material during the injection molding process and the dimensional stability of the final product.

[0038] S3. Set the injection molding parameters, inject the raw materials into the mold, and use multi-stage injection molding technology to inject into the finished rough piece.

[0039] In one embodiment, step S3 further includes the following sub-steps: setting the injection temperature, pressure and time, using a three-stage filling method, with the first stage being 50% flow and 80% filling, the second stage being 30% shrinkage compensation, and the final stage being 20% ​​pressure holding, so as to inject into a finished rough piece.

[0040] Understandably, the temperature control process is as follows: set the barrel temperature to 200-280°C for PP and 220-250°C for ABS; set the mold temperature to 40-80°C for PP and 50-90°C for ABS. Pressure and time control is as follows: injection pressure: 60-120 MPa (using segmented control, initial high-pressure filling, and later low-pressure holding); hold time set to 4-5 seconds to reduce shrinkage; cooling time set to 25-30 seconds. By adjusting the temperature, pressure, and time, the material's melt state and flow behavior can be precisely controlled, ensuring that the polypropylene / ABS resin fully melts at the appropriate temperature (to ensure fluidity). Pressure adjustment ensures uniform filling of the mold cavity, while time parameters control the filling speed and hold time to avoid defects such as flash and sink marks. In the initial stage of injection, 50% of the flow rate is used to fill 80%. During the initial stage of injection, a higher flow rate is used to quickly fill the majority of the mold space, reducing melt fracture or flash caused by high-speed flow, shortening the molding cycle time, and ensuring the initial shape of the blank. The second stage, 30% feeding, uses a smaller flow rate to compensate for material shrinkage during cooling after the initial molding of the blank. This helps reduce internal stress and surface defects in the blank and improves its dimensional stability. The final stage, 20% holding pressure, is used at the end of the injection molding process to ensure that the blank completely fills the mold. Maintaining pressure allows the material to maintain its shape during the solidification stage, preventing shrinkage and deformation, and ensuring the dimensional accuracy and structural density of the blank (especially in the gradient thickness area).

[0041] S4. Deburr and anneal the finished rough piece, and cool it to set it.

[0042] In one embodiment, step S4 further includes the following sub-steps:

[0043] S401. Manually or mechanically remove parting line burrs and gate residues to reduce air resistance. Remove parting line burrs and gate residues produced by injection molding, eliminate surface protrusions and stress concentration points, reduce air resistance during flight, and improve appearance consistency.

[0044] S402. Place the finished rough sheet in an oven at 70-80°C for 1-2 hours for annealing to release internal stress. Heating in an oven at 70-80°C releases internal stress generated by uneven cooling inside the ABS rough sheet, thereby preventing deformation or cracking caused by stress release during subsequent use and improving dimensional stability.

[0045] S403. Design water- or air-cooling channels to uniformly cool the finished feathers, preventing warping and controlling deformation to <0.2mm to maintain the feather's shape and structural integrity. Control the cooling rate through the water- or air-cooling channels to avoid warping caused by local shrinkage differences (deformation <0.2mm), maintaining the accuracy and integrity of key structures such as the feather's gradient thickness and vane angle.

[0046] Understandably, the above steps can ensure that the finished badminton feathers have a high-quality surface, stable dimensions and good structural integrity. These steps are crucial for improving the flight performance, durability and consistency of the badminton.

[0047] S5. Using a blade array assembly, the vanes of the finished feather piece are obliquely cut into vanes with a barb density of 2-4 barbs / mm.

[0048] In one embodiment, step S5 further includes the following sub-steps:

[0049] S501 , manufacturing a blade array assembly according to the shape and material properties of the vane 2 , and adjusting the cutting angle of the blade array assembly.

[0050] Understandably, the blade thickness (0.1-0.2mm) and hinge structure are designed based on the shape and material properties of the vanes 2 (such as the hardness difference between PP and ABS), ensuring the cutting sharpness (the blades are made of carbon steel to meet the sharpness and durability requirements) and durability of the blade array assembly. Specifically, the blade array assembly is precisely assembled from multiple sets of upper and lower blades, spacers, series connecting rods, and angle limiters. The specific structure is as follows:

[0051] The overall thickness of the blade array assembly is about 40mm, and it contains 80-160 blades (the lower blade group has one more blade than the upper blade group). The cutting density of 2-4 blades / mm is achieved by configuring the number of blades; the upper and lower blades at the hinged end are arranged at intervals, and a smooth, wear-resistant circular spacer with a thickness of 0.1-0.2mm, an outer diameter of 6mm, and an inner hole diameter of 3mm is embedded in between (it can be coated with lubricating oil to reduce shear resistance); three spacers of the same specification are set between the upper and lower blade groups at the shearing end to ensure the engagement positioning accuracy of the upper and lower blades; the series holes of the blade hinged end and the shearing end are fixed in series by three metal series connecting rods with a diameter of 2mm and threads at both ends; angle limiters are configured at both ends of the series connecting rods to match the upper and lower blade groups (the upper and lower limiters have different specifications), and stable control of the shearing process is achieved after tightening with nuts.

[0052] S502, placing the vane (2) into the inlet of the blade array assembly, obliquely cutting the vane (2), cutting the vane (2) into feathers with a density of 2-4 barbs / mm of barbs (3), and making each barb (3) form a preset angle with the central axis of the barb (1), and the preset angle is 30-50 degrees. It can be understood that by the series combination of the blade array and the setting of the limiter, the barbs 3 with a density distribution of 2-4 barbs / mm can be accurately cut, the air attachment effect is optimized, and the flight resistance is reduced; the barbs 3 are controlled to form an inclination angle of 30-50 degrees with the central axis of the barb 1. The design of the barbs 3 and the central axis of the barb 1 forming an inclination angle of 30-50 degrees can simulate the aerodynamic characteristics of the oblique barbs of natural feathers, laying the foundation for forming a low-resistance comb structure.

[0053] S503, combing the cut barbs (3) and pressing and leveling them. It is understood that combing the scattered barbs and pressing and leveling them eliminates burrs and deformation after cutting (deformation < 0.2 mm) to ensure the surface flatness and structural consistency of the barbs; if necessary, heating and leveling are used to further eliminate internal stress to prevent warping or breakage caused by stress release during subsequent use.

[0054] In a specific embodiment, the process of cutting the vanes using the row blade array is as follows:

[0055] First, the blade array is fixed and placed: a rectangular frame matching the size of the blade array is dug out on a dedicated work surface, with a depth of about 10 mm, ensuring that the top surface of the lower blade group of the blade array is flush with the work surface after placement; in order to achieve a one-time cutting of the feathers 2 on the left and right sides of the feather piece, the left and right sets of blade arrays are symmetrically placed on the work surface, with a spacing of about 2 mm between the two sets of blade arrays.

[0056] Then, the vane 2 is cut by lifting the upper blade group of the blade array, placing the injection-molded imitation feather piece on the lower blade group of the blade array, adjusting the position of the vane 2 so that its peduncle 1 is aligned with the middle interval of the left and right blade arrays; fixing the vane 2 by a fixing device (such as a clamp) to prevent it from slipping and moving during the cutting process; and simultaneously pressing down the upper blade groups of the left and right blade arrays, using a limiting mechanism to limit the cutting depth to no more than 1.5 mm, thereby completing the oblique cutting of the vane 2.

[0057] Finally, the cutting is completed and the feathers are taken out: the upper blade group of the blade array is lifted up, and the simulated badminton feathers that have been cut are removed, thus completing the cutting operation of the feathers 2.

[0058] The method for preparing a simulated badminton feather of the present invention achieves high strength, lightweight, and excellent flight performance of the badminton feather through coordinated optimization of multiple links. The mold design adopts a gradient thickness structure and precision machining technology to ensure that the structural strength and aerodynamic performance of the vane 2 from the base 201 to the tip are gradually adapted. The injection molding process uses segmented injection and a temperature control system to precisely control material flow and cooling, ensuring the microscopic precision of the gradient thickness of the vane 2 and the angle of the barbs 3. The post-processing process combines deburring, annealing, and uniform cooling technologies to eliminate internal stress and maintain the morphological stability of the vane 2. The unique blade array cutting array simulates the whip sheath effect and streamlined profile of a natural feather through a high-density oblique barb layout (2-4 bars / mm) and a preset angle design of 30-50 degrees, thereby reducing air resistance while improving energy transfer efficiency and directional control accuracy at the moment of hitting the ball. In addition, the automated production compatibility introduced in the process chain (such as in-mold cutting gates and CNC linkage cutting) provides technical feasibility for large-scale manufacturing, ultimately making the finished product have both the hitting feel of natural feathers and the durability of engineering materials, meeting the high standards required by professional and amateur sports for badminton flight performance, control accuracy and service life.

[0059] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. 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 make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A simulated badminton feather, characterized in that: The invention comprises a stalk (1) and vanes (2) arranged on opposite sides of the stalk (1), wherein the vanes (2) are arranged at the end of the stalk (1) away from the ball head, and the vanes (2) comprise a base (21), a middle stabilizing portion (22) and a tip optimization portion (23) connected in sequence, wherein the tip optimization portion (23) is arranged at the end of the stalk (1) away from the ball head; the vane (2) is made of polypropylene and ABS resin materials; the vane (2) further comprises a plurality of barbs (3), wherein the barbs (3) form a preset angle with the central axis of the stalk (1), wherein the preset angle is 30-50°, and the distribution density of the barbs (3) on the vane (2) is 2-4 barbs / mm.

2. The simulated badminton feather piece according to claim 1, characterized in that: The cross section of the vane (2) gradually widens from the base (21) to the end of the middle stabilizing portion (22); and the cross section of the vane (2) gradually narrows from the tip optimization portion (23) to the end of the middle stabilizing portion (22).

3. The simulated badminton feather piece according to claim 2, characterized in that: The thickness of the base (21) is 0.25-0.3 mm, the thickness of the middle stabilizing portion (22) is 0.2-0.25 mm, and the thickness of the tip optimization portion (23) is 0.15-0.25 mm.

4. A method for preparing a simulated badminton feather, characterized in that: The following steps are involved: S1, select raw materials for making rough sheets and pre-treat the raw materials; S2. Perform 3D modeling, design the mold shape and size, and perform hard chrome plating or nitriding treatment on the mold; S3. Set the injection molding parameters, inject the raw materials into the mold, and use multi-stage injection molding technology to mold the finished product into a rough piece; S4, deburring and annealing the finished rough piece, cooling and shaping; S5. Using a blade array assembly, the vanes (2) of the finished feather piece are cut obliquely to form vanes (2) with a barb (3) density of 2-4 barbs / mm.

5. The method for preparing the simulated badminton feathers according to claim 4, wherein: The step S1 further includes the following sub-steps: S101. Select polypropylene and ABS resin materials according to product requirements to ensure that the raw materials have fluidity and moisture resistance; S102. Dry the raw materials to remove moisture from the particles; dry the polypropylene at 80-100°C for 2-4 hours; dry the ABS resin material at 80-90°C for 3-4 hours, match the colors and mix the raw materials, add color masterbatch or functional masterbatch, and mix them evenly.

6. The method for preparing the simulated badminton feathers according to claim 5, wherein: The step S2 further includes the following sub-steps: S201. Designing a mold to adapt to the gradual thickness of the feathers and the cutting angle of the feathers according to the flight characteristics and hitting requirements of the badminton; S202. According to the shape and size of the mold, use CNC processing technology to rough-process the mold cavity and perform fine carving, with the tolerance controlled at ±0.02mm; mirror-polish the mold and install the temperature control system.

7. The method for preparing the simulated badminton feathers according to claim 6, wherein: The step S3 further comprises the following steps: The injection temperature, pressure and time are set, and three-stage filling is adopted, with 50% flow and 80% filling in the first stage, 30% shrinkage in the second stage, and 20% holding pressure in the last stage to inject into the finished rough piece.

8. The method for preparing the simulated badminton feathers according to claim 7, wherein: The step S4 further comprises the following steps: S401. Remove parting line burrs and gate residues manually or mechanically to reduce air resistance; S402, placing the finished rough piece in an oven at 70-80°C for 1-2 hours to release internal stress; S403. Design water cooling or air cooling channels to evenly cool the finished blanks to prevent bending of the blanks and control deformation to <0.2mm to maintain the shape and structural integrity of the blanks.

9. The method for preparing the simulated badminton feathers according to claim 8, characterized in that: The step S5 further comprises the following steps: S501, manufacturing a blade array assembly according to the shape and material properties of the vane (2), and adjusting the cutting angle of the blade array assembly; S502, placing the vane (2) into the inlet of the blade array assembly, cutting the vane (2) obliquely, cutting the vane (2) into barbs (3) with a density of 2-4 barbs / mm, and making each barb (3) form a preset angle with the central axis of the peduncle (1), the preset angle being 30-50°; S503, combing the cut feather branches (3), and pressing and flattening them.

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