A free detachable hitting mat with stable high resilience turf and preparation method thereof

Abstract

The present application belongs to the technical field of golf product manufacturing, and discloses a hitting pad with a stable high-resilience grass surface and a free detachable preparation method. The hitting pad is sequentially bonded from top to bottom with a hitting surface, a polyurethane adhesive layer and a velvet magic tape material layer. The present application can achieve accurate and stable control of size, solve the problem of large size shrinkage caused by environmental temperature changes, improve the hitting resilience and softness of the product, and can resist hitting and improve the cushioning performance of the pad layer, increase the protection and comfort of the body of the hitting personnel. The free detachable function of the product can realize convenient carrying and not be limited by space, and can firmly match and combine products. The product has diversified grass surface colors, improves the problem of single color of conventional hitting products, and can quickly and accurately control the rolling direction of the ball when putting.

Description

Technical Field

[0001] This invention belongs to the field of golf product manufacturing technology, and in particular relates to a shaped, stable, high-resilience grass surface and a freely detachable hitting mat and its preparation method. Background Technology

[0002] Existing golf products primarily consist of the turf and padding glued together, which presents inconveniences for hitting, transporting, or replacing the turf. Furthermore, the turf's uniform color makes it difficult to determine the rolling direction during putting practice; different directional strikes to the turf result in significant variations in ball speed; and poor rebound affects the feel of the shot. Additionally, the product's dimensions vary considerably depending on environmental conditions and temperature.

[0003] Based on the above analysis, the existing technology has the following problems and defects: Its dimensions are greatly affected by ambient temperature and humidity; under excessively high or low temperatures, dimensional shrinkage is extremely significant. The grass surface has poor resilience, affecting the feel of the shot; the directionality of the grass surface affects the ball's rolling speed; the direction of the ball's rolling motion is unclear during putting; it is inconvenient to transport and requires significant storage space; and the grass surface has a single color, which can easily cause visual fatigue. Summary of the Invention

[0004] To overcome the problems existing in related technologies, the present invention discloses an embodiment of a shaped, stable, highly resilient grass surface and a freely detachable striking pad and its preparation method.

[0005] The technical solution is as follows: a shaped, stable, high-resilience grass surface and a freely detachable striking pad, wherein the striking pad is bonded from top to bottom with: a striped striking surface located on the upper layer, which is formed by weaving yarns together with a base yarn or a base fabric layer;

[0006] Located in the middle layer, it is fused with a thin-layer shaping material through adhesive to form an integral polyurethane adhesive layer, and is bonded to the impact surface through adhesive. The thin-layer shaping material includes polyurethane fibers.

[0007] Located at the bottom, it is a layer of velour hook and loop fastener material with adhesive backing.

[0008] Furthermore, in the striped striking surface, the stripes are formed by regularly spaced intervals of yarns of different colors and equal widths.

[0009] Furthermore, the yarn includes nylon yarn.

[0010] Furthermore, the yarn curvature is controlled within 60% < curvature < 80% and the curvature variation is consistent.

[0011] Furthermore, the yarn shape is an ellipse with a curvature of <1 mm in the middle.

[0012] Furthermore, the curvature of the polyurethane adhesive layer is 3mm-5mm.

[0013] Another object of the present invention is to provide a preparation method for preparing the aforementioned shaped, stable, high-resilience, and freely detachable impact pad, the preparation method comprising:

[0014] S1, depending on the actual scenario, lay out a layer of velour hook and loop material with backing adhesive.

[0015] S2, through the fusion of adhesive and thin-layer shaping material, forms an integral polyurethane adhesive layer, which is then bonded to the impact surface through adhesive;

[0016] S3 involves bonding a striped striking surface, formed by weaving yarns together with a base yarn or a base fabric layer, onto a polyurethane adhesive layer.

[0017] In step S3, the yarn is nylon yarn, and the curvature of the nylon yarn is controlled at 60-80%, specifically including:

[0018] Step 1: Construct a bending compression support design model for nylon yarn in a real-world scenario to reflect minute changes in the bending degree of the nylon yarn.

[0019] Step 2: Construct a predictive model for the working performance of the longitudinal ideal compression support surface and a predictive model for the minute change in the curvature of the nylon yarn that integrates the bearing capacity of the ideal compression support surface.

[0020] Step 3: Based on the constructed model, determine the condition for the longitudinal ideal compression support surface with variable nylon yarn curvature to achieve optimal working performance. This condition is that the difference between the nylon yarn curvature and the longitudinal ideal compression support surface tends to 0 in a positive direction.

[0021] Step four: Based on the determined conditions, construct an ultra-precise longitudinal ideal compression support surface accuracy control model based on the equivalent nylon yarn curvature, the curvature of the yarn shape itself, the yarn shape and curvature ratio, and perform longitudinal ideal compression support surface control.

[0022] In step one, a bending compression support design model for nylon yarn curvature in a real-world scenario is constructed. The calculation model for nylon yarn curvature considering nylon yarn curvature deviation is as follows:

[0023]

[0024] In the formula, F(x,z) is the nylon yarn curvature, F0 is the theoretical nylon yarn curvature, C0 is the initial bias value, m is the number of deviation values, n is the number of initial phase angle deviation values, and C xm U represents the m-th deviation value in the x-direction, where x is the coordinate variable in the width direction of the nylon yarn. xThe deviation wavelength in the x-direction, Let C be the m initial phase angle deviation values ​​in the x-direction. zn U represents the nth magnitude deviation value in the z-direction, where z is the coordinate variable of the slider's motion direction. z The deviation wavelength in the z-direction, Let ε be the nth initial phase angle deviation value in the z-direction. mn θ represents the coupling deviation values ​​in the x and y directions. mn The initial phase angle is the coupling deviation in the x and y directions.

[0025] In step two, the prediction model for the working performance of the longitudinal ideal compression bearing surface is constructed. The prediction model for the bearing capacity of the ideal compression bearing surface is as follows:

[0026]

[0027] In the formula, Y i For the ideal compression support surface bearing capacity prediction model, UE i H represents the maximum nylon yarn pressure for the i-th nylon yarn. i U represents the equivalent nylon yarn bearing area of ​​the i-th single nylon yarn. s V is the curvature inherent in the yarn shape itself. 0i Let D be the initial curvature of the i-th single nylon yarn. ri Let be the curvature ratio of the i-th single nylon yarn;

[0028] The equivalent nylon yarn bearing area H of the i-th single nylon yarn i The expression is:

[0029] H i =(K i -k i (O) i -o i )

[0030] In the formula, K i and O i k represents the length and width of a single nylon yarn, respectively. i and o i These represent the bending length of the yarn shape itself in the length and width directions, respectively.

[0031] Combining all the above technical solutions, the beneficial effects of this invention are as follows: This invention achieves precise and stable dimensional control, solving the problem of large dimensional shrinkage caused by changes in ambient temperature. This invention improves the rebound and softness of the impact, enhancing both impact resistance and the shock absorption performance of the padding layer, thus increasing protection and comfort for the player. This invention solves the problem of the ball's rolling speed being affected by the different directions of the grass surface, achieving uniform ball rolling speed and no directional differences in grass surface impacts. This invention solves the problem of unclear ball rolling direction positioning during putting by using regularly spaced different colors in the grass surface, achieving fast and accurate putting positioning. The freely detachable function of this invention facilitates convenient transportation without space limitations, while also allowing for secure assembly. The diverse combinations of grass surface colors in this invention improve the problem of monotonous colors in conventional hitting products, enhancing the enjoyment of hitting. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure;

[0033] Figure 1 This is a schematic diagram of a shaped, stable, highly resilient grass surface, and freely detachable striking pad provided in an embodiment of the present invention;

[0034] Figure 2 This is a flowchart of the preparation method of the shaping, stable, high-resilience grass surface and freely detachable striking pad provided in the embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of regularly spaced nylon yarns of different colors and equal widths on the striking surface provided in an embodiment of the present invention.

[0036] In the diagram: 1. Impact surface; 2. Polyurethane adhesive layer; 3. Velcro material layer. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] The innovation of this invention lies in the fact that the grass surface, combined with this type of weaving method, achieves impact resistance, high rebound, and comfortable hitting, accurate putter positioning, and uniform ball roll directionality. Simultaneously, it protects the batter's joints while maintaining stable shape and allowing for easy disassembly, unaffected by spatial or geographical conditions, thus achieving industry innovation in batting pad products.

[0039] Example 1: This embodiment of the invention provides a shaped, stable, highly resilient grass surface and a freely detachable striking pad, wherein the striking pad is bonded together from top to bottom with the following components:

[0040] Located in the upper layer, the striped striking surface 1 is formed by weaving yarns together with the base yarn or the base fabric layer;

[0041] Located in the middle layer, it is fused with a thin-layer shaping material through adhesive to form an integral polyurethane adhesive layer 2, and is bonded to the impact surface 1 through adhesive. The thin-layer shaping material includes polyurethane fibers.

[0042] Located at the bottom, there is a layer 3 of velour hook and loop material with adhesive backing.

[0043] As can be seen from the above embodiments, the technical solution of the present invention can reduce material consumption and improve the product's service life and market competitiveness after transformation.

[0044] This invention combines the advantages of woven grass surface to achieve controllable size, impact resistance, high rebound, accurate putter positioning, ball rolling without directional differences, and comfortable hitting, thus realizing industry innovation in hitting pad products.

[0045] This invention solves the problem of unstable dimensions of such products due to the influence of environmental temperature and humidity. It stabilizes the dimensional deviation of traditional similar impact pads within ±3 mm within ±1 mm, thus solving the problems of impact and assembly caused by large dimensional changes.

[0046] This invention overcomes the technical bias of large dimensional shrinkage variations in this type of woven grass surface. It also overcomes the technical bias of differences in ball rolling speed caused by directional differences in the impact on the grass surface.

[0047] Example 2, as Figure 2 As shown, a method for preparing a shaped, stable, high-resilience grass surface impact pad that can be freely detached is disclosed. The method includes:

[0048] S1, According to the actual scenario, lay out a layer of velour hook and loop material 3 with backing adhesive;

[0049] S2, by fusing the adhesive with a thin layer of shaping material, an integral polyurethane adhesive layer 2 is formed, and then bonded to the impact surface 1 by the adhesive;

[0050] S3, the striped striking surface 1, formed by weaving the yarn with the base yarn or the base fabric layer, is bonded to the polyurethane adhesive layer 2.

[0051] For example, in step S3, the yarn is nylon yarn, and the curvature of the nylon yarn is controlled at 60-80%, specifically including:

[0052] Step 1: Construct a bending compression support design model for nylon yarn in a real-world scenario to reflect minute changes in the bending degree of the nylon yarn.

[0053] Step 2: Construct a predictive model for the working performance of the longitudinal ideal compression support surface and a predictive model for the minute change in the curvature of the nylon yarn that integrates the bearing capacity of the ideal compression support surface.

[0054] Step 3: Based on the constructed model, determine the condition for the longitudinal ideal compression support surface with variable nylon yarn curvature to achieve optimal working performance. This condition is that the difference between the nylon yarn curvature and the longitudinal ideal compression support surface tends to 0 in a positive direction.

[0055] Step four: Based on the determined conditions, construct an ultra-precise longitudinal ideal compression support surface accuracy control model based on the equivalent nylon yarn curvature, the curvature of the yarn shape itself, the yarn shape and curvature ratio, and perform longitudinal ideal compression support surface control.

[0056] For example, in step one, a bending compression support design model for nylon yarn curvature in a real-world scenario is constructed. The nylon yarn curvature calculation model considering the bending deviation of the nylon yarn is as follows:

[0057]

[0058] In the formula, F(x,z) is the nylon yarn curvature, F0 is the theoretical nylon yarn curvature, C0 is the initial bias value, m is the number of deviation values, n is the number of initial phase angle deviation values, and C xm U represents the m-th deviation value in the x-direction, where x is the coordinate variable in the width direction of the nylon yarn. x The deviation wavelength in the x-direction, Let C be the m initial phase angle deviation values ​​in the x-direction. zn U represents the nth magnitude deviation value in the z-direction, where z is the coordinate variable of the slider's motion direction. z The deviation wavelength in the z-direction, Let ε be the nth initial phase angle deviation value in the z-direction. mn θ represents the coupling deviation values ​​in the x and y directions. mn The initial phase angle is the coupling deviation in the x and y directions.

[0059] In step two, the prediction model for the working performance of the longitudinal ideal compression bearing surface is constructed. The prediction model for the bearing capacity of the ideal compression bearing surface is as follows:

[0060]

[0061] In the formula, Y i For the ideal compression support surface bearing capacity prediction model, UE i H represents the maximum nylon yarn pressure for the i-th nylon yarn. i U represents the equivalent nylon yarn bearing area of ​​the i-th single nylon yarn. s V is the curvature inherent in the yarn shape itself. 0i Let D be the initial curvature of the i-th single nylon yarn. ri Let be the curvature ratio of the i-th single nylon yarn;

[0062] The equivalent nylon yarn bearing area H of the i-th single nylon yarn i The expression is:

[0063] H i =(K i -k i (O) i -o i )

[0064] In the formula, K i and O i k represents the length and width of a single nylon yarn, respectively. i and o i These represent the bending length of the yarn shape itself in the length and width directions, respectively.

[0065] As demonstrated by the above embodiments, this invention achieves precise and stable dimensional control, solving the problem of large dimensional shrinkage caused by changes in ambient temperature. The product of this invention improves impact resilience and softness, enhancing both impact resistance and shock absorption of the pad layer, thus increasing protection and comfort for the player. This invention solves the problem of ball rolling speed differences caused by the directionality of the grass surface on the hitting mat through warp knitting combined with yarn curvature control, achieving both non-directional differences in the grass surface and consistent ball rolling speed in both directions. The product's detachable design facilitates easy transport without spatial limitations and allows for secure assembly. The product's diverse grass surface color combinations address the issue of monochromatic colors in conventional hitting mats and allow for quick and accurate control of the ball's rolling direction during putts.

[0066] Example 3, as another possible implementation of the present invention, describes the preparation of a shaped, stable, high-resilience grass surface and a freely detachable striking pad, which can be deployed indoors or outdoors according to different application scenarios.

[0067] Example 4, as another possible implementation of the present invention, such as Figure 1 As shown, the shaped, stable, high-resilience straw surface and freely detachable striking pad provided in this embodiment of the invention mainly consists of a three-layer structure. The upper layer is a striped striking surface 1 formed by nylon yarn combined with a base yarn or base fabric layer through weaving or other weaving methods.

[0068] The intermediate layer is a polyurethane adhesive layer 2 with a certain degree of curvature (curvature of 3mm-5mm). During this process, a thin layer of shaping material with a controllable size of about 1mm is laminated to allow the adhesive and the thin layer of shaping material to fully integrate and form a whole. This helps the product maintain qualified dimensions and good shape in high temperature and high humidity environments (temperature range -10℃-40℃ / humidity range 10%-100%), while avoiding the problem of bending and deformation (the deformation and bulging height of the grass surface can be controlled to ≤2mm).

[0069] The bottom layer is a layer 3 of velour hook and loop fastener material with a composite backing and adhesive. Finally, a polyurethane adhesive layer 2 is applied again to one end of the backing to facilitate the spreading of the impact surface 1. The impact surface 1 is a grass-like surface.

[0070] As can be seen from the above embodiments, in terms of size control: in the product combination, the striking surface 1 (grass surface) is in the middle of the fleece hook and loop material layer 3, with an additional thin layer of shaping material with a curvature of about 1 mm, so as to achieve the purpose of precise size control;

[0071] Regarding the improvement of rebound and the solution to the influence of grass surface directionality on ball rolling speed: This product controls the curvature of nylon yarn within a certain range (60% < curvature < 80%) and ensures the consistency of curvature changes. At the same time, the shape of nylon yarn is adjusted to an ellipse with a certain curvature in the middle (< 1 mm), which can increase the uprightness and stiffness of grass fibers, thereby improving its impact resistance and flexibility, and playing a role in increasing shock absorption and rebound performance.

[0072] Regarding easy disassembly: This product achieves easy disassembly by fully covering the bottom of the grass surface with a layer of Velcro material 3 with a backing adhesive, and is easy to assemble and carry.

[0073] Regarding the issues of diverse combinations of grass surface colors and putter positioning: When weaving the striking surface 1 (grass surface) of this product, the purpose of multi-colored striped striking surface 1 (grass surface) is achieved by designing regular intervals of nylon yarn of different colors and equal widths. This increases the color diversity of striking surface 1 (grass surface), enhances the enjoyment of hitting, and improves the accuracy of putter positioning.

[0074] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0075] To further illustrate the effects of the embodiments of the present invention, the following experiments were conducted.

[0076] Other similar products are significantly affected by ambient temperature and humidity; shrinkage is noticeable when humidity is above 70% or below 20%. This product, however, achieves precise and stable dimensional control through the use of special composite materials. It remains unaffected by ambient temperature and humidity, maintaining acceptable dimensions and good shape within a range of -10℃ to 40℃ and humidity from 10% to 100%, while also avoiding bending and deformation.

[0077] Other similar products suffer from poor grass surface resilience, affecting the feel of the hit. This product, however, achieves excellent shock absorption and resilience by adjusting the appropriate curvature and flexibility of the nylon yarn. Experiments have verified that the nylon yarn is deformed into a curved state during production through stretching and heat treatment, while the degree of curvature is controlled within a certain range (60% < curvature < 80%), ensuring consistent curvature variation. Within this range of curvature, the yarn increases the support of the grass fibers. Furthermore, the interconnectedness of the grass fibers during bending and stretching increases the fullness of the grass surface and improves the product's resilience, enhancing the hitting comfort. If the curvature is too low, individual grass fibers straighten, becoming independent, thus reducing the overall support and resilience of the grass surface. If the curvature is too high, the height of the grass fibers decreases, reducing support height and overall fullness and resilience. Additionally, a high-curvature curve easily causes unevenness on the grass surface, affecting the smoothness of the ball's roll upon impact. Furthermore, based on experimental verification and mechanical application principles, adjusting the curvature of nylon yarn into an elliptical streamlined structure with a certain degree of curvature can increase the impact resistance of nylon yarn (grass fibers) and reduce friction with contacting materials, thereby improving impact resistance and reducing impact resistance, and increasing the smoothness and flexibility of grass fibers.

[0078] Other similar products suffer from inconvenient handling and high storage space requirements. This product, however, achieves easy disassembly while maintaining a secure assembly through a bottom layer of freely adhesive composite material. The composite backing and adhesive-backed Velcro layer 3 reduces the product's weight while allowing for easy disassembly, and the adhesive function ensures a stable bond even in the event of an impact.

[0079] Other similar grass-like surfaces use a single color, which can easily cause visual fatigue. This product, however, features yarns (nylon yarns) of different colors arranged in a regular pattern, such as... Figure 3 As shown, a multi-colored striped grass surface was achieved, which improves the problem of impact fatigue.

[0080] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention and within the spirit and principles of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A shaped, stable, high-resilience grass surface striking pad that can be freely detached, characterized in that, The pad is bonded from top to bottom with the following: the upper layer has a striped striking surface formed by weaving the yarn with the base yarn or the base fabric layer (1). Located in the middle layer, it is fused with a thin-layer shaping material through adhesive to form an integral polyurethane adhesive layer (2), and is bonded to the striking surface (1) through adhesive. The thin-layer shaping material includes polyurethane fibers. Located in the lower layer, there is a layer of velvet hook and loop material with a backing adhesive (3). The yarn curvature is controlled within 60% < curvature < 80% and the curvature changes are consistent; The yarn is elliptical in shape with a curvature of <1 mm in the middle.

2. The shaped, stable, high-resilience grass surface, and freely detachable striking pad according to claim 1, characterized in that, In the striped striking surface (1), the stripes are formed by regularly spaced segments of yarn of different colors with equal width.

3. The shaped, stable, high-resilience grass surface, and freely detachable striking pad according to claim 1, characterized in that, The yarn includes nylon yarn.

4. The shaped, stable, high-resilience grass surface, and freely detachable striking pad according to claim 1, characterized in that, The curvature of the polyurethane adhesive layer (2) is 3 mm to 5 mm.

5. A preparation method, characterized in that, This preparation method is used to prepare the shaped, stable, high-resilience, and freely detachable impact pad according to any one of claims 1-4. The preparation method includes: S1, depending on the actual scenario, lay out a layer of velvet hook and loop material with backing adhesive (3). S2, through the fusion of glue and thin-layer shaping material, an integral polyurethane adhesive layer (2) is formed, and then bonded to the impact surface (1) through glue; S3, the striped striking surface (1) formed by weaving the yarn with the base yarn or the base fabric layer is bonded to the polyurethane adhesive layer (2).

6. The preparation method according to claim 5, characterized in that, In step S3, the yarn is nylon yarn, and the curvature of the nylon yarn is controlled at 60-80%, specifically including: Step 1: Construct a bending compression support design model for nylon yarn in a real-world scenario to reflect minute changes in the bending degree of the nylon yarn. Step 2: Construct a predictive model for the working performance of the longitudinal ideal compression support surface and a predictive model for the minute change in the curvature of the nylon yarn that integrates the bearing capacity of the ideal compression support surface. Step 3: Based on the constructed model, determine the condition for the longitudinal ideal compression support surface with variable nylon yarn curvature to achieve optimal working performance. This condition is that the difference between the nylon yarn curvature and the longitudinal ideal compression support surface tends to 0 in a positive direction. Step four: Based on the determined conditions, construct an ultra-precise longitudinal ideal compression support surface accuracy control model based on the equivalent nylon yarn curvature, the curvature of the yarn shape itself, the yarn shape and curvature ratio, and perform longitudinal ideal compression support surface control.

7. The preparation method according to claim 6, characterized in that, In step one, a bending compression support design model for nylon yarn curvature in a real-world scenario is constructed. The calculation model for nylon yarn curvature considering nylon yarn curvature deviation is as follows: In the formula, The curvature of the nylon yarn. This refers to the theoretical crimp of nylon yarn. This is the initial bias value. The number of deviation values. The initial phase angle deviation value is the number of times. Let m be the deviation values ​​in the x-direction. For the coordinate variables in the width direction of the nylon yarn, The deviation wavelength in the x-direction, Let m be the initial phase angle deviation values ​​in the x-direction. Let n be the amplitude deviation value in the z-direction. The coordinate variables represent the direction of the slider's movement. The deviation wavelength in the z-direction, Let n be the initial phase angle deviation values ​​in the z-direction. These are the coupling deviation values ​​in the x and y directions. The initial phase angle is the coupling deviation in the x and y directions.

8. According to the preparation method of claim 6, in step two, the prediction model for the working performance of the longitudinal ideal compression support surface is as follows: In the formula, For the ideal compression support surface bearing capacity prediction model, Let be the maximum nylon yarn pressure of the i-th nylon yarn. Let be the equivalent nylon yarn bearing area of ​​the i-th single nylon yarn. The curvature inherent in the yarn shape itself. Let i be the initial curvature of the i-th single nylon yarn. Let be the curvature ratio of the i-th single nylon yarn; The equivalent nylon yarn bearing area of ​​the i-th single nylon yarn The expression is: In the formula, and These represent the length and width of a single nylon yarn, respectively. and These represent the bending length of the yarn shape itself in the length and width directions, respectively.

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