High-strength plate for shoe sole

Abstract

The utility model belongs to the technical field of footwear products, and provides a high-strength plate for a sole, the high-strength plate is provided with a sole full-sole or half-sole structure, the high-strength plate comprises a high-strength fiber resin electro-embroidery sheet layer with hollows, and the area of the hollows is smaller than or equal to 60% of the total area of the surface of the high-strength plate. According to the manufacturing method, the high-strength fiber and the resin are adopted to form the high-strength sheet plate for the shoe sole through the procedures of hollowed-out electric embroidery and the like, accurate arrangement can be achieved, functional distinguishing of different parts is achieved, and the overall rigidity and strength are guaranteed. The traditional manual operation process is replaced by mechanical electric embroidery, so that the process is simplified, the working efficiency is improved, and the production cost is reduced. In addition, different appearance visual effects can be achieved through different high-strength fiber yarns, and therefore various requirements of consumers are further met.

Description

Technical Field

[0001] The present application belongs to the technical field of footwear products, and in particular relates to a high-strength plate for shoe soles. Background Art

[0002] Carbon plate is a carbon fiber composite material, usually formed by heat-treating and bonding resin and carbon fiber filaments. Due to its excellent mechanical properties, it can play a supporting role in the sole of the shoe, and can prevent torsion and protect the foot. For carbon plates used for soles, they can be divided into thermosetting carbon plates and thermoplastic carbon plates according to performance and production process. The production process of thermosetting carbon plates mainly includes: resin batching, carbon fiber machine; fiber yarn arrangement; yarn drawing, yarn folding, yarn pressing; molding; weighing, and racking. Among them, the yarn folding process includes weighting, yarn stacking, cutting, transfer, reinforcement and other operations. The molding is generally heated and molded, and after demolding, burrs, sandblasting, cleaning and other operations are also performed. Thermoplastic carbon plates are usually made by spreading the carbon fiber filament windings, and then impregnating them with thermoplastic resin to form unidirectional tapes. Multiple layers of unidirectional tapes are unrolled and stacked at different angles, and hot / cold pressed to form a plate.

[0003] Compared with thermoplastic carbon plates, thermosetting carbon plates can be made into more three-dimensional and complex structures. In traditional production processes, parametric design can be used to prepare multi-hardness hollow carbon plates through pre-forming and molding by manipulators. The hollow carbon plates currently available on the market are lightweight, but still have certain limitations. For example, it is difficult to achieve different hardnesses on both sides of the forefoot, that is, the arrangement of the functional areas of traditional carbon plates is not precise enough; and their unit price is expensive. Utility Model Content

[0004] In view of this, the present application provides a high-strength plate for shoe soles. The high-strength plate provided in the present application has a hollow structure, which can ensure the overall strength while accurately realizing the functionality and has a high cost-performance ratio.

[0005] The present application provides a high-strength plate for a sole, having a full-sole or half-sole structure, wherein the high-strength plate comprises a hollow high-strength fiber resin electro-embroidery sheet layer, wherein the hollow area is less than or equal to 60% of the total surface area of ​​the high-strength plate.

[0006] In an embodiment of the present application, the high-strength fiber resin electric embroidery sheet layer is a carbon fiber resin electric embroidery sheet layer, a glass fiber resin electric embroidery sheet layer or a carbon fiber / glass fiber resin electric embroidery sheet layer.

[0007] In an embodiment of the present application, the high-strength fiber resin electro-embroidery sheet layer comprises high-strength fiber and resin components, and the high-strength fiber is a carbon fiber with a specification of 3K to 24K.

[0008] In an embodiment of the present application, the resin component of the high-strength fiber resin electro-embroidery sheet layer is epoxy resin.

[0009] In an embodiment of the present application, the main sole part of the high-strength fiber resin electro-embroidery sheet layer has different colors and / or different patterns.

[0010] In an embodiment of the present application, the high-strength fiber resin electro-embroidery sheet layer also has a base fabric layer.

[0011] The present application provides a method for preparing a high-strength plate for a shoe sole, comprising the following steps:

[0012] According to the full-palm or half-palm structure of the sole, a hollow design is electro-embroidered on the surface of the base fabric with high-strength fiber yarn to form an electro-embroidery layer; the hollow area is less than or equal to 60% of the total surface area of ​​the electro-embroidery layer;

[0013] The electric embroidery layer is composite-molded with resin, or the base fabric in the electric embroidery layer is removed and then composite-molded with resin, and a high-strength plate for the sole is obtained after demoulding.

[0014] In an embodiment of the present application, the high-strength fiber yarn is one or both of carbon fiber yarn and glass fiber yarn; and the resin is epoxy resin.

[0015] In some embodiments of the present application, the mold temperature of the composite compression molding is 170-180° C., and the heat preservation and pressure holding time is 2 minutes to 5 minutes.

[0016] In some embodiments of the present application, the mold temperature of the composite compression molding is 120-150°C.

[0017] In the embodiments of the present application, the average stiffness of the forefoot of the high-strength plate used for the sole is 240-560N; there are also other embodiments where the stiffness is not within this range.

[0018] Compared with the prior art, the high-strength plate for the sole provided by the present application includes: a high-strength fiber resin electro-embroidery sheet layer with a hollow, which may include an electro-embroidery base cloth or may be without a base cloth; the hollow area is less than or equal to 60% of the total surface area of ​​the high-strength plate. The present application uses high-strength fibers and resins through hollow electro-embroidery and other processes to form a high-strength sheet for the sole, which can be precisely arranged to achieve functional differences in different parts and ensure overall stiffness and strength. The present application replaces the traditional manual operation process with mechanical electro-embroidery, simplifies the process, improves work efficiency, and reduces production costs. The present application can also achieve different appearance visual effects through different high-strength fiber yarns, thereby further meeting the diverse needs of consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a high-strength plate in some embodiments of the present application;

[0020] Figure 2 This is a schematic diagram of the structure of a high-strength plate in some other embodiments of the present application. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is described in detail below in conjunction with specific embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application.

[0022] The present application provides a high-strength plate for a sole, having a full-sole or half-sole structure, wherein the high-strength plate comprises a hollowed-out high-strength fiber resin electro-embroidery sheet layer, wherein the hollowed-out area is less than or equal to 60% of the total surface area of ​​the high-strength plate.

[0023] The high-strength plate provided in the present application has a hollow structure, which ensures overall strength while accurately realizing functionality and has a high cost-performance ratio.

[0024] See also Figure 1 , Figure 2 , Figure 1 and Figure 2 All of them are structural schematic diagrams of high-strength plates in the embodiments of the present application; 1 is a carbon plate with a certain hollowing corresponding to the arch area, and the dotted line in the figure is the outer contour of the sole.

[0025] The high-strength plate 1 for the sole provided in the embodiment of the present application has a full-palm structure, and can also be a front half palm or rear half palm structure of the sole. The high-strength plate 1 includes a hollow high-strength fiber resin electro-embroidery sheet layer, which is a high-strength sheet formed by high-strength fiber and resin through hollow electro-embroidery and other processes.

[0026] The hollow electric embroidery described in the embodiment of the present application is to design the hollow sole structure by computer programming, and embroider on the base cloth with yarn through an electric embroidery machine, including plate making, wiring and other processes; traditional embroidery is commonly known as "embroidery", which is a skill of using a needle to guide the thread on the processed fabric, piercing it according to the design requirements, and organizing the embroidery thread into various patterns and colors by moving the needle.

[0027] The high-strength fiber resin electroembroidery sheet described in the embodiment of the present application comprises: high-strength fiber and resin components; the yarn for electroembroidery in the embodiment of the present application is mainly carbon fiber yarn, but is not limited to carbon fiber, and pure or blended yarns of glass fiber and other high-strength fibers can also be used according to demand. Preferably, the high-strength fiber resin electroembroidery sheet is a carbon fiber resin electroembroidery sheet, a glass fiber resin electroembroidery sheet or a carbon fiber / glass fiber resin electroembroidery sheet, and more preferably a carbon fiber resin electroembroidery sheet.

[0028] Carbon fiber can be divided into polyacrylonitrile (PAN)-based carbon fiber, asphalt-based carbon fiber, etc. according to the source of raw materials. The embodiments of this application mainly use PAN-based carbon fiber, both general-purpose and high-strength types are available, such as carbon fiber strength of 1000MPa to 2000MPa, and modulus of 100GPa to 250GPa. There are many types of carbon fiber. In the embodiments of this application, the high-strength fiber is preferably a carbon fiber with a specification of 3K to 24K, such as 3K, 12K, 24K commercially available carbon fiber filament (carbon filament) products. If the carbon fiber is too thin, it is difficult to ensure the overall strength and production and processing quality.

[0029] In addition, the resin component of the high-strength fiber resin electro-embroidery sheet layer is preferably epoxy resin; epoxy resin and its curing system have excellent performance. Commonly used epoxy resins include bisphenol A epoxy resin, bisphenol F epoxy resin and bisphenol E epoxy resin, etc.; commonly used curing agents include amine curing agents, acid anhydride curing agents and acid anhydride amine curing agents, etc. Different curing agents have different effects on the curing speed, hardness and heat resistance of epoxy resin. This application can use epoxy resin with lower fluidity. The resins used in some embodiments of this application are epoxy resin YPH1150 and WP-R560023K (provided by Huibai New Materials Technology Co., Ltd.), but are not limited to this and can be adjusted according to the category. Among them, the viscosity of WP-R560023K epoxy resin is 16500-22500mPa.s@70℃.

[0030] The high-strength fiber resin electro-embroidery sheet layer described in the embodiment of the present application has a hollow structure, and the hollow area is less than or equal to 60% of the total surface area of ​​the high-strength board 1, such as about 50%, to ensure the lightness and support function of the high-strength board. There are a variety of designs for the distribution and outer contour of the hollow, and the hardness and stiffness of different parts can be adjusted as needed to accurately achieve functionality; the whole palm can be hollowed out, or half of the palm can be hollowed out. Figure 1 and Figure 2 The corresponding arch of the foot shown in the figure has hollowing out of different shapes, and multiple hollowing out designs symmetrically distributed over the entire palm can also be formed. In some embodiments, the average stiffness of the forefoot of the high-strength plate used for the sole is 240-560N.

[0031] In the embodiments of the present application, the main sole of the high-strength fiber resin electro-embroidery sheet has different electro-embroidery patterns. The electro-embroidery patterns are diverse, including one or more of one-stitch and one-thread rope embroidery, coiling embroidery, flat embroidery and three-dimensional embroidery. The present application has no special restrictions on this. Specifically, rope embroidery (also known as rope strand embroidery) and coiling embroidery can be used. Flat embroidery is an embroidery method composed of straight lines using needle techniques such as straight needles, swing needles, and loop needles on a flat base material, and the embroidery surface has delicate patterns. Coiling embroidery has needle techniques such as winding embroidery, belt embroidery, and chirping embroidery, and the embroidery surface has a stronger three-dimensional sense.

[0032] The high-strength fiber resin electro-embroidery sheet layer described in the embodiment of the present application also has a base fabric layer; that is, the base fabric of the hollow electro-embroidery can be removed or retained in the high-strength plate. The composition of the base fabric is not limited, and the performance is selected according to the specific strength requirements; the base fabric can be made of cloth of different structures and the color can also be selected. As for the removal of the base fabric, it can be subsequently cut or cut while embroidering, and water-soluble removal of the water-soluble base fabric can also be considered. In addition, the surface (non-hollow position) of the high-strength fiber resin electro-embroidery sheet layer can be further electro-engraved and modified.

[0033] The high-strength plate for the sole described in the embodiment of the present application may be a half-palm, full-palm or other structure, with a light weight, an average thickness of generally 0.8-2.0 mm, functionality with precise design of different parts, and the overall stiffness and strength meet the requirements; it may include different base fabric layers, and may have a variety of appearance forms such as different colors, different textures (or no texture), etc., with high cost performance and convenient for application.

[0034] The present application provides a method for preparing a high-strength plate for a shoe sole, comprising the following steps:

[0035] According to the full-palm or half-palm structure of the sole, a hollow design is electro-embroidered on the surface of the base fabric with high-strength fiber yarn to form an electro-embroidery layer; the hollow area is less than or equal to 60% of the total surface area of ​​the electro-embroidery layer;

[0036] The electric embroidery layer is composite-molded with resin, or the base fabric in the electric embroidery layer is removed and then composite-molded with resin, and a high-strength plate for the sole is obtained after demoulding.

[0037] The embodiment of the present application first prepares the raw materials, in which a removable base cloth is specifically used; in the embodiment of the present application, the high-strength fiber yarn is one or both of carbon fiber yarn and glass fiber yarn, preferably carbon filament, with specifications of 3K to 24K. The resin used in the embodiment of the present application is epoxy resin, such as epoxy resin products of model YPH1150 and WP-R560023K. The amount of resin can be adjusted to different ranges according to the design and processing method, such as adding resin directly to the carbon fiber. The current trial addition amount is 20-50% (relative to the mass of the carbon fiber), which is somewhat different from the amount of resin added after embroidery.

[0038] In addition, the embodiment of the present application performs hollow electric embroidery design of the sole style based on TOP topological calculation, and then uses an electric embroidery machine to embroider high-strength fiber yarn to form an electric embroidery layer; different patterns can be formed through various electric embroidery processes, such as one or more of one-stitch rope embroidery, tape embroidery, flat embroidery and three-dimensional embroidery. The present application has no special restrictions on this, and the specific content of the hollow structure is as described above.

[0039] After the electric embroidery layer is formed, some embodiments of the present application perform composite molding with the resin injected into the mold, and other embodiments remove the base fabric in the electric embroidery layer and then perform composite molding with the resin. The obtained electric embroidery layer is first placed in a mold, the mold is closed and pressurized for pre-forming, and then the resin is injected into the mold and molded for final shaping, and finally cooled and demolded. Different embroidery piece organizations and designs, subsequent processing technology fine-tuning (such as resin adjustment) and different rigidity requirements will affect the product thickness and weight.

[0040] In the embodiment of the present application, the mold temperature of the composite compression molding is preferably 120℃-180℃. In some thermoplastic processes, the mold temperature is 170℃-180℃, and the heat preservation and pressure holding time can be 2 minutes-5 minutes; it can be heated by an infrared heating plate, and its temperature is set to 350-400℃, and the heating is about 3-4 minutes; at the same time, the mold temperature is set to 170-180℃, and the surface temperature of the electric embroidery layer before heating molding is between 180-200℃. After that, the heating plate is removed, and the mold is closed and vacuumed for molding, which can be divided into two stages. First, the heat preservation and pressure holding stage lasts for 3 minutes, and then it is cooled to the demolding stage for 2 minutes; the mold temperature during demolding is 90-100℃, and the product temperature is 120-125℃. In other thermosetting processes, the mold temperature is set to 150℃, 25 minutes (small machine + vacuuming); 120℃, 2 hours (large machine + vacuuming). After composite molding in the embodiment of the present application, the mold is opened, the product is taken out, and the appearance of the product out of the mold is also arranged, such as trimming; the surface (non-hollowed-out position) of the high-strength fiber resin electro-embroidery sheet layer can be further electro-engraved and modified.

[0041] The embodiments of the present application use high-strength fibers and resins mainly through hollow electric embroidery and composite molding processes to form high-strength plates for the soles, which can be precisely arranged to achieve functional differences in different parts and ensure overall stiffness strength. For example, the average stiffness of the forefoot of the high-strength plates obtained in some embodiments is 240 to 560N. The present application replaces the traditional manual operation process with mechanical electric embroidery, simplifies the process, improves work efficiency, and reduces production costs. The present application can also achieve different appearance visual effects through different high-strength fiber yarns, thereby further meeting the diverse needs of consumers.

[0042] The present application is further described in detail below in conjunction with the examples and drawings. The examples described here are only to help understand the present application, and the implementation methods of the present application are not limited thereto. Among them, the raw materials of the examples of the present application are commercially available.

[0043] Example 1

[0044] According to the full-palm structure of the sole, 3K carbon fiber yarn is used to perform hollow design electro-embroidery on the surface of the removable base fabric, and an electro-embroidery layer is formed by rope embroidery and tape embroidery, and the base fabric is subsequently cut off; the hollow area accounts for 50% of the total surface area of ​​the electro-embroidery layer. The specific hollow structure is test sample V2, and there are several small hollows symmetrically distributed on the whole palm.

[0045] The formed electric embroidery layer and the injected epoxy resin (epoxy resin WP-R560023K) are compound molded in the mold. The infrared heating plate is used for heating, and the temperature is set to 350-400℃ for about 3-4 minutes; at the same time, the mold temperature is set to 170-180℃, and the surface temperature of the electric embroidery layer is between 180-200℃ before heating and molding. After that, the heating plate is removed, and the mold is closed and vacuumed for molding. First, the heat preservation and pressure holding stage lasts for 3 minutes, and then it is cooled to the demolding stage for 2 minutes; the mold temperature during demolding is 90-100℃, and the product temperature is 120-125℃. The mold is opened, the product is taken out, and the edges are trimmed to obtain a carbon plate for the sole with a thickness of 0.8-2.0mm.

[0046] The prepared carbon plate samples were subjected to a comparative test (the test was a 3-point bending test, which is a commonly used sole stiffness test method), and the results are as follows. Among them, comparative sample A and comparative sample B are both carbon plates made by conventional methods.

[0047] Table 1 Comparison of carbon plate performance in Example 1

[0048]

[0049] In addition, other embodiments of the present application can cut the base fabric during electric embroidery and perform the electric carving process; they can also control hollow structures of different areas to obtain electric embroidery layer carbon plates with different stiffness and strength.

[0050] It can be seen from the above embodiments that the present application uses high-strength fibers and resins through hollowing out and electro-embroidery processes to form high-strength sheets for the soles, which can be precisely arranged to achieve functional differences in different parts and ensure overall stiffness and strength. The present application replaces the traditional manual operation process with mechanical electro-embroidery, simplifies the process, improves work efficiency, and reduces production costs. The present application can also achieve different appearance visual effects through different high-strength fiber yarns, thereby further meeting the diverse needs of consumers.

[0051] Finally, it should be noted that the specific embodiments described in this article are merely examples of the spirit of the present application, and are not intended to limit the implementation methods of the present application. Those skilled in the art of the present application may make other modifications or additions to the described embodiments and replace them in a similar manner. It is not necessary and impossible to provide all examples of all implementation methods here. These obvious changes or modifications derived from the essential spirit of the present application still fall within the scope of protection of the present application, and interpreting them as any additional limitation is contrary to the spirit of the present application.

Claims

1. A high-strength plate for a shoe sole, having a full-sole or half-sole structure, characterized in that: The high-strength board includes a high-strength fiber resin electro-embroidery sheet layer with a hollowing, wherein the hollowing area is less than or equal to 60% of the total surface area of ​​the high-strength board; the high-strength fiber resin electro-embroidery sheet layer is a carbon fiber resin electro-embroidery sheet layer; The high-strength fiber resin electric embroidery sheet layer comprises high-strength fiber and resin component, wherein the high-strength fiber is carbon fiber with a specification of 3K to 24K; and the resin component of the high-strength fiber resin electric embroidery sheet layer is epoxy resin.

2. The high-strength plate for shoe soles according to claim 1, characterized in that: The main sole part of the high-strength fiber resin electro-embroidery sheet layer has different colors and / or different patterns.

3. The high-strength plate for shoe soles according to any one of claims 1-2, characterized in that: The high-strength fiber resin electric embroidery sheet layer also has a base fabric layer.

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