A shuttlecock with a feather stem and a feather number digital glue spraying reinforcement and a preparation method thereof

Abstract

This invention discloses a badminton shuttlecock reinforced with digital spray adhesive on the feather shaft and its preparation method, relating to the field of badminton shuttlecock production technology. The shuttlecock includes a head, shaft, feathers, and binding coils. The shaft and feathers have a non-full-coverage linear / dot-shaped reinforcing adhesive layer on vulnerable areas. A color trademark and anti-counterfeiting mark are integrally printed on the surface of the feathers. The preparation method involves pre-treating the semi-finished shuttlecock after binding with hooks and lines, simultaneously completing directional reinforcing spray adhesive and marking printing using digital spray adhesive equipment, followed by low-temperature curing and subsequent rolling and packaging processes. This invention uses a non-full-coverage spray adhesive method, which does not damage the aerodynamic performance of the shuttlecock, precisely reinforces vulnerable areas to improve durability, and achieves integrated production of reinforcement and marking. The process is adaptable to mass production lines, solving problems such as compromised flight performance, poor reinforcement effect, and cumbersome marking procedures in existing processes. It is suitable for the large-scale production of competition-grade badminton shuttlecocks.

Description

Technical Field

[0001] This invention relates to the field of badminton manufacturing technology, specifically to a badminton shuttlecock reinforced with digital spray adhesive on the feather shaft and feathers, and its preparation method. Background Technology

[0002] The existing conventional badminton shuttlecock production process is as follows: raw material processing → feather planting and base layering → semi-finished product sorting → hook string binding → glue rolling and fixing → post-production glue application → inspection and packaging.

[0003] To improve feather durability and prevent frizz, a full-surface coating adhesive technology has emerged in the industry, with several related patents published (such as CN201821245678.X and CN201910375153.3). This technology achieves anti-frizz effect by coating one or both sides of the feather with a continuous protective film adhesive layer, but it has a fatal flaw: the full coating significantly increases wind resistance on the feather surface, disrupting the original aerodynamic shape of the feather, resulting in slower shuttlecock flight speed, trajectory deviation, and decreased landing accuracy, failing to meet the requirements of competition-grade shuttlecocks.

[0004] At the same time, the existing process still has the following insurmountable technical pain points: 1. Traditional roller coating process can only cover the surface of the coil and feather shaft, and cannot accurately reinforce the vulnerable edges of the feather. The problems of feather shaft breakage and feather frizz cannot be solved at the root. 2. If glue is sprayed after feather implantation and before hooking, the feathers and quills are not completely fixed, resulting in poor positioning accuracy. This can easily lead to problems such as glue spraying deviation and glue overflow sticking to the feathers, resulting in a low yield of mass-produced products. 3. Traditional manual glue application and coating methods have extremely poor precision, resulting in uneven glue layer thickness, making it impossible to achieve standardized and large-scale mass production; 4. Badminton trademarks or anti-counterfeiting labels often use post-labeling, screen printing or heat transfer processes. These processes are independent, have low positioning accuracy, are easy to fall off, and are costly. Labeling also increases the thickness in certain areas and disrupts the aerodynamic consistency of the shuttlecock. Conventional label printing is mostly a single solid color, with weak color expression and low brand recognition and anti-counterfeiting level.

[0005] In summary, existing processes cannot simultaneously meet the core requirements of "controllable adhesive layer morphology, no damage to aerodynamic performance, strong impact resistance, compatibility with mass production lines, integrated color labeling, and excellent anti-counterfeiting performance". Summary of the Invention

[0006] (a) A badminton shuttlecock reinforced with digital spray adhesive for feather shafts and feathers The badminton shuttlecock includes a head, a shaft, feathers, and a binding coil. The vulnerable parts of the shaft and feathers are provided with a linear reinforcing adhesive layer and / or a dotted reinforcing adhesive layer formed by digital spraying. The linear and dotted reinforcing adhesive layers are not fully covered on the surface of the feathers, preserving the transparent areas of the main body of the feathers. The surface of the feathers is integrally formed with a colored trademark and anti-counterfeiting mark through the same digital spraying process. The colored trademark, anti-counterfeiting mark, and reinforcing adhesive layer are of uniform thickness and do not change the original aerodynamic shape of the feathers.

[0007] Furthermore, the linear reinforcing adhesive layer extends along the length of the feather shaft and covers the root of the connection between the feather and the feather shaft, as well as the easily frizzy areas at the edges of the feather; the dotted reinforcing adhesive layer is evenly distributed in the areas of the feather that are easily damaged by stress, and the diameter and spacing of the adhesive dots are precisely set according to the aerodynamic parameters of badminton flight.

[0008] Furthermore, the reinforcing adhesive layer, the colored trademark, and the anti-counterfeiting label all use the same environmentally friendly, durable spray adhesive. After curing, the adhesive layer is highly flexible and firmly bonded to the feathers and feather shafts without delamination or cracking.

[0009] (II) A method for preparing a badminton shuttlecock reinforced with digital spray adhesive for feather shafts and feathers. Includes the following steps: 1. Semi-finished product pretreatment: After completing the processes of feathering, sorting semi-finished products, and hooking and binding, badminton shuttlecock semi-finished products are obtained. The semi-finished products are positioned and fixed, and surface dust and impurities are removed to ensure that the adhesive surface is clean. 2. Digital Adhesive Spraying Parameter Settings: Based on the badminton shuttlecock specifications and durability requirements, preset the spraying path, adhesive layer thickness, and spraying points. Import the reinforced adhesive layer line / point data, color trademark, and anti-counterfeiting label pattern data into the digital adhesive spraying equipment; 3. Precision digital glue spraying: The pre-treated badminton shuttlecock semi-finished products are sent to the digital glue spraying station. Before the hook and string binding is completed and the glue is rolled and fixed, the digital glue spraying equipment sprays glue in a linear / dot-like direction on the base of the shuttlecock and the vulnerable parts of the feathers according to the preset parameters. At the same time, color trademarks and anti-counterfeiting marks are printed simultaneously. 4. Curing and shaping: The semi-finished badminton shuttlecocks after spraying adhesive are dried and cured at low temperature, so that the adhesive layer can be quickly shaped without damaging the feather material; 5. Subsequent processing: Complete the glue-fixing, inspection and packaging processes to obtain the finished badminton shuttlecock.

[0010] Furthermore, the digital adhesive spraying process adopts non-contact adhesive spraying, with precise and controllable spraying pressure and adhesive output, no adhesive overflow, no adhesive layer adhesion, and spraying positioning error ≤0.5mm.

[0011] Furthermore, the low-temperature drying and curing temperature is 35℃-80℃, the curing time is 8-15 minutes, and the curing process is carried out with uniform ventilation.

[0012] II. Beneficial Effects 1. No loss of aerodynamic performance: The linear / dot-like non-full-coverage spraying method preserves the transparent area of ​​the main feather body, avoids the increase of wind resistance by continuous film-like adhesive layers, and completely preserves the original aerodynamic shape of the badminton shuttlecock. The flight speed, trajectory and landing accuracy meet the standards of competition-grade shuttlecocks, solving the technical problem of traditional full-coverage spraying damaging flight performance.

[0013] 2. Significantly improved durability: Precisely reinforces vulnerable areas such as the base of the feather shaft and the edges of the feathers, addressing the root causes of feather shaft breakage and feather frizz. Compared to traditional glue application and repair processes, the lifespan of badminton shuttlecocks is increased by more than 40%.

[0014] 3. Adaptable to mass production lines: The glue is sprayed after the hook and line are tied and before the roller glue is fixed, ensuring that the feathers and feather shafts are firmly positioned. The glue spraying is free from deviation and adhesion. With digital precision glue control, the glue layer thickness is uniform, enabling automated and standardized mass production with a yield rate of ≥98%.

[0015] 4. Integrated labeling process: The reinforced adhesive layer and color trademarks and anti-counterfeiting labels are printed and formed simultaneously, eliminating the need for separate labeling and screen printing processes. This ensures high positioning accuracy, secure and non-detachable labels, and does not increase local thickness, thus guaranteeing the aerodynamic consistency of the badminton shuttlecock. At the same time, color printing is achieved, enhancing brand recognition and anti-counterfeiting level while reducing production costs.

[0016] 5. Simple and efficient process: The integration of reinforcement and marking processes simplifies the production process, reduces manual operation, and significantly improves production efficiency, making it suitable for large-scale industrial production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the badminton shuttlecock according to the present invention; Figure 2 This is a schematic diagram of the adhesive layer distribution and marking layout of a single feather in a badminton shuttlecock according to the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the linear reinforcing adhesive layer at the root of the feather stalk according to the present invention; Figure 4 This is an enlarged schematic diagram of the distribution of the dotted reinforcing adhesive layer on the feather fragments according to the present invention; Figure 5 This is a process flow timeline diagram of the badminton shuttlecock preparation method described in this invention.

[0018] The corresponding names for each figure are as follows: 1-Ball head; 2-Feather shaft; 3-Feather body; 4-Binding coil; 5-Linear reinforcing adhesive layer; 6-Dot-shaped reinforcing adhesive layer; 7-Colored trademark; 8-Anti-counterfeiting mark; 9-Transparent, glue-free area of ​​the feather body.

[0019] Figure 1 The present invention illustrates the overall assembly structure of a badminton shuttlecock. The shuttlecock consists of a head 1, multiple feather shafts 2, multiple feather blades 3, and a binding coil 4. The bottom of the feather shafts 2 is fixed inside the head 1. The binding coil 4 binds and positions the multiple feather shafts 2 along the axial direction. The surfaces of the feather shafts 2 and the feather blades 3 are provided with a non-full-coverage reinforcing adhesive layer. The surface of the feather blades 3 is integrally formed with a colored trademark 7 and an anti-counterfeiting mark 8. The overall structure is symmetrical, maintaining the original aerodynamic shape of the badminton shuttlecock.

[0020] Figure 2 This is a schematic diagram showing the structural details of a single feather. A linear reinforcing adhesive layer 5 is provided along the entire length of the feather shaft 2. The linear reinforcing adhesive layer 5 extends to cover the connection base between the feather piece 3 and the feather shaft 2, as well as the easily frizzy area at the edge of the feather piece 3. A dotted reinforcing adhesive layer 6 is evenly distributed in the stress-prone areas of the feather piece 3. The central area of ​​the feather piece 3 is a transparent, adhesive-free area 9, which is not covered by any adhesive layer to ensure stable aerodynamic performance. The colored trademark 7, anti-counterfeiting mark 8, linear reinforcing adhesive layer 5, and dotted reinforcing adhesive layer 6 are formed simultaneously through the same digital spraying process, resulting in a uniform adhesive layer thickness.

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the feather root. The linear reinforcing adhesive layer 5 is uniformly covered on the outer surface of the feather root 2. The adhesive layer is tightly bonded to the feather root 2 without gaps or excess adhesive, which can significantly improve the bending and fracture resistance of the feather root 2. Moreover, the thickness of the adhesive layer is uniform and does not change the overall outer diameter of the feather root 2.

[0022] Figure 4 This is an enlarged schematic diagram of the dotted reinforcing adhesive layer 6 on the feather 3. The dotted reinforcing adhesive layer 6 is evenly distributed in a matrix in the stress area of ​​the feather 3. The adhesive dots are of uniform size and spacing. After curing, each adhesive dot is flat, without protrusions or accumulation. It only provides directional reinforcement to local areas and does not affect the overall transparency and aerodynamic performance of the feather 3.

[0023] Figure 5 The process flow sequence diagram of the preparation method of the present invention is as follows: semi-finished product pretreatment → digital spraying parameter setting → precise digital spraying (after hook binding and before roller fixation) → curing and shaping → roller fixation → inspection and packaging. It clarifies the sequential position of the digital spraying process in the overall production process and highlights the creativity and rationality of the process sequence of the present invention. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0025] A method for preparing a badminton shuttlecock reinforced with digital spray adhesive on the feather shaft and feathers, the specific steps of which are as follows: 1. Semi-finished product pretreatment: Select high-quality goose feather raw materials, and complete the raw material processing, feather planting and base layering, semi-finished product sorting, and hook binding in sequence to obtain standard competition-grade badminton shuttlecock semi-finished products. Use special positioning clamps to fix the semi-finished products, and use clean airflow to remove dust from the feather surface to ensure that the glue spraying surface is free of impurities. 2. Digital spray adhesive parameter settings: Set the linear reinforcing adhesive layer to be distributed along the entire length of the feather shaft, covering the root of the connection between the feather shaft and the feather blade; set the dotted reinforcing adhesive layer to be spaced 2mm apart and 0.5mm in diameter; import the brand trademark and anti-counterfeiting QR code pattern data; adjust the spray adhesive pressure to 0.2MPa and the adhesive output to 0.01ml / s. 3. Precision digital glue spraying: The semi-finished product is fed into the digital glue spraying equipment. After the hook and wire binding and before the glue is rolled and fixed, non-contact directional glue spraying is performed, and the linear reinforcing glue layer, dot reinforcing glue layer spraying, and color trademark and anti-counterfeiting QR code printing are completed simultaneously. 4. Curing and shaping: Place the semi-finished product after spraying the adhesive into a constant temperature drying oven, set the temperature to 40℃, and ventilate for 10 minutes to cure the adhesive layer completely; 5. Subsequent processing: After routine glue fixation, visual inspection, flight performance testing, and packaging, the finished badminton shuttlecock is obtained.

[0026] Testing showed that the badminton shuttlecocks prepared in this embodiment had no excess glue or sticking in the feathers, the glue layer was uniform, and the flight speed and trajectory met the GB / T 11881-2019 badminton standard. The shuttlecocks were 50% more durable than those made with traditional methods, and the trademarks were firmly attached without falling off. Example

[0027] A badminton shuttlecock reinforced with digital spray adhesive for the feather shaft includes a shuttlecock head, a feather shaft, feathers, and binding coils. The surface of the feather shaft has a linear reinforcing adhesive layer along its length, and the edges and stress areas of the feathers have evenly distributed dotted reinforcing adhesive layers. The surface of the feathers is integrally printed with a colored brand logo and anti-counterfeiting pattern. The thickness of the reinforcing adhesive layer and the logo layer is the same, with no protrusions or excess adhesive. The main body of the feathers is not covered by an adhesive layer, maintaining a transparent state.

[0028] This badminton shuttlecock has been tested in actual combat and has demonstrated stable flight and precise landing. After continuous hits, there is no feather frizz or broken feather shaft. The markings do not fall off after repeated rubbing, providing excellent anti-counterfeiting effects. It can be used in professional competitions and high-end training scenarios.

Claims

1. A badminton shuttlecock reinforced with digital spray adhesive for feather shafts and feathers, comprising a shuttlecock head, feather shafts, feather blades, and binding coils, characterized in that: The vulnerable parts of the feather shaft and feather piece are provided with a linear reinforcing adhesive layer and / or a dotted reinforcing adhesive layer formed by digital spraying. The linear and dotted reinforcing adhesive layers are not fully covered on the surface of the feather piece, preserving the transparent area of ​​the main body of the feather piece. The surface of the feather piece is integrally formed with a colored trademark and anti-counterfeiting mark through the same digital spraying process. The colored trademark, anti-counterfeiting mark and reinforcing adhesive layer are of uniform thickness and do not change the original aerodynamic shape of the feather piece.

2. The badminton shuttlecock reinforced with digital spray adhesive for feather shafts and feathers according to claim 1, characterized in that: The linear reinforcing adhesive layer extends along the length of the feather shaft and covers the root of the feather shaft and the edge of the feather shaft where it is prone to frizzing; the dotted reinforcing adhesive layer is evenly distributed in the areas of the feather shaft that are easily damaged by stress.

3. A method for preparing a badminton shuttlecock reinforced with digital spray adhesive on the feather shaft and feathers, characterized in that, Includes the following steps: (1) Semi-finished product pretreatment: Complete the processes of feather planting, semi-finished product sorting, hooking and binding to obtain badminton shuttlecock semi-finished products, position and fix the semi-finished products and clean the glue spraying surface; (2) Digital spraying parameters: preset the spraying path, adhesive layer thickness, and spraying points, and import the enhanced adhesive layer line type / point data, color trademark and anti-counterfeiting mark pattern data into the digital spraying equipment; (3) Precision digital spraying: Before the hook and line binding and the glue rolling fixation process is completed, the digital spraying equipment sprays glue in a linear / dot-like direction on the base of the feather shaft and the vulnerable parts of the feather according to the preset parameters, and at the same time prints the color trademark and anti-counterfeiting mark. (4) Curing and shaping: The semi-finished badminton shuttlecocks after spraying glue are dried and cured at low temperature; (5) Subsequent processing: Complete the glue-fixing, inspection and packaging processes to obtain the finished badminton shuttlecock.

4. The method for preparing a badminton shuttlecock reinforced with digital spray adhesive for feather shafts and quills according to claim 4, characterized in that: The digital glue spraying process uses non-contact glue spraying, and the glue spraying positioning error is ≤0.5mm.

5. The method for preparing a badminton shuttlecock reinforced with digital spray adhesive for feather shafts and quills according to claim 4, characterized in that: The low-temperature drying and curing temperature is 30℃-80℃, the curing time is 8-15min, and the curing process is carried out with uniform ventilation.

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