Method of manufacturing a shoe, shoe manufacturing system and shoe

Abstract

The application relates to a shoe manufacturing method, a shoemaking system and a shoe. The shoe manufacturing method comprises the following steps: forming an outer layer surface on the outer surface of a sock set on a shoe tree; the outer layer surface is thermoplastic; heating the sock and the outer layer surface to a bonding state to form a shoe upper; heating the shoe upper to a separable state to separate the shoe upper from the shoe tree; in the separable state, the inner side of the shoe upper is softened, and the outer side of the shoe upper is not softened; and processing the shoe upper to form a shoe based on the shoe upper. The shoe manufacturing method, the shoemaking system and the shoe can consider the shape of the shoe upper when the shoe upper is separated from the shoe tree, so that the quality of the shoe is improved.

Description

Technical Field

[0001] This application relates to the field of footwear manufacturing technology, and in particular to footwear manufacturing methods, footwear systems, and footwear. Background Technology

[0002] In the shoe manufacturing process, the upper needs to be shaped using a shoe last. However, it is difficult to maintain the shape of the upper while separating it from the shoe last, resulting in a need to improve the quality of the shoe. Summary of the Invention

[0003] Based on this, this application provides a shoe manufacturing method, shoe manufacturing system, and shoe that can take into account the shape of the shoe upper when separating it from the shoe last, thereby improving the quality of the shoe.

[0004] According to one aspect of this application, an embodiment of this application provides a method for manufacturing a shoe, comprising: forming an outer layer on the outer surface of a sock fitted onto a shoe last; the outer layer being thermoplastic; heating the sock and the outer layer to a bonded state to form a shoe upper; heating the shoe upper to a separable state to detach the shoe upper from the shoe last; in the separable state, the inner side of the shoe upper softens while the outer side of the shoe upper remains unsoftened; and processing the shoe upper as a basis to form a shoe.

[0005] In one embodiment, the softening temperature of the shoe upper is a first temperature T1, the heating temperature of the bonded state is a second temperature T2, and the heating temperature during the process of heating the shoe upper to a separable state is a third temperature T3; wherein, T1+10℃≥T3≥T1-10℃, T1+60℃≥T2≥T1+30℃.

[0006] In one embodiment, the first temperature T1 is 60°C to 130°C; and / or, during the heating to a separable state, the third temperature is maintained for 5 to 60 seconds.

[0007] In one embodiment, at least a portion of the material of the footwear or socks comprises the target thermoplastic material.

[0008] In one embodiment, the target thermoplastic material accounts for 20% to 60% of the weight of the material in the footwear or socks; and / or, the target thermoplastic material is selected from at least one of thermoplastic polyurethane fiber, polyether ester elastomer fiber, polyamide hot melt fiber, polyamide block polyether elastomer fiber, and ethylene-vinyl acetate copolymer fiber.

[0009] In one embodiment, before forming an outer layer on the outer surface of the sock fitted onto the shoe last, the process includes: forming a release layer on the shoe last; or polishing the shoe last.

[0010] In one embodiment, the material of the shoes and socks includes elastic fibers; before the outer layer is formed on the outer surface of the shoes and socks fitted onto the shoe last, the process includes: pre-treating the shoes and socks; the pre-treating process includes at least one of heating and stretching; and fitting the pre-treated shoes and socks onto the shoe last.

[0011] In one embodiment, the footwear has multiple functional areas, and the material of the portion of the footwear located in the functional areas includes functional fibers; at least two functional areas have different types of functional fibers.

[0012] In one embodiment, the functional fiber is selected from at least one of the following: antibacterial fiber containing silver or copper ions, moisture-absorbing fiber, temperature-controlling fiber containing phase change microcapsules, waterproof fiber, and cushioning fiber.

[0013] According to another aspect of this application, an embodiment of this application provides a shoe manufacturing system for implementing the shoe manufacturing method of any of the above embodiments; the shoe manufacturing system includes: a sock-fitting device for fitting a sock onto a shoe last; an outer layer forming device for forming an outer layer on the outer surface of the sock fitted onto the shoe last; a heating device for heating the shoe last, the sock, and the outer layer; and a demolding device for separating the sock and the outer layer from the shoe last.

[0014] In one embodiment, the shoe-making system further includes a visual recognition device for monitoring the state of the socks and outer layer; and / or, the shoe-making system further includes a control device electrically connected to the sock-fitting device, the outer layer forming device, the heating device, and the demolding device.

[0015] According to another aspect of this application, an embodiment of this application provides a shoe manufactured by any of the shoe manufacturing methods described in the above embodiments; or, manufactured by any of the shoe manufacturing systems described in the above embodiments.

[0016] The aforementioned shoe manufacturing method, system, and shoe, by heating the shoe upper and outer surface to a bonded state, not only allows for better fusion between the shoe upper and outer layer but also enables the shoe upper to fit more tightly to the shoe last, facilitating the shaping of the shoe upper. Simultaneously, by heating the shoe upper to a separable state, the inner side of the shoe upper softens while the outer side remains intact, making it easier to detach the shoe upper from the shoe last while maintaining its shape, thereby improving the quality of the shoe. Attached Figure Description

[0017] Figure 1 This is a schematic flowchart of a method for manufacturing shoes according to an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the structure of the shoe and socks being fitted onto the shoe last in a shoe manufacturing method according to one embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the structure of a shoe last having a sock and an outer layer in a shoe manufacturing method according to an embodiment of this application.

[0020] Figure 4 This is a schematic diagram of the structure of dividing functional areas on shoes and socks in a method of manufacturing shoes according to an embodiment of this application.

[0021] Figure 5 This is a schematic diagram illustrating the heating process within a hot melt chamber in a shoe manufacturing method according to an embodiment of this application.

[0022] Figure 6 This is a schematic diagram illustrating the use of a spray molding process to form the outer layer in a shoe manufacturing method according to an embodiment of this application.

[0023] Figure 7 This is a schematic diagram illustrating the use of 3D printing to form the outer layer in a shoe manufacturing method according to an embodiment of this application.

[0024] Figure 8 This is a schematic diagram illustrating the use of a melt-forming process to form the outer layer in a shoe manufacturing method according to an embodiment of this application.

[0025] Figure 9 This is a schematic diagram of the structure in a shoe manufacturing method according to an embodiment of this application, showing the separation of shoes and socks from the shoe last.

[0026] Figure 10 This is a schematic diagram of the shoe-making system in one embodiment of this application.

[0027] Figure label: 1. Shoe last; 2. Shoes and socks; 21. Toe area; 22. Instep area; 23. Arch area; 24. Heel area; 3. Outer surface; 41. Heating chamber; 42. Hot air; 51. Nozzle; 52. Spraying robotic arm; 61. Spray nozzle; 62. Working platform; 71. Reclamation molding chamber; 72. Flexible pressure roller; 73. Roller track; 81. Sock-fitting device; 82. Outer surface molding device; 83. Heating device; 84. Demolding device; 85. Control device; 86. Visual recognition device; S10. Step; S20. Step; S30. Step; S40. Step. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are 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 this application. However, this application can be implemented 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 this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0034] To enhance comfort and functionality, shoes typically use a combination of a sock and an outer layer to form the upper. However, during manufacturing, the sock needs to be tightly fitted onto the shoe last to maintain a stable shape. This makes it difficult to detach the upper from the last after it's formed, requiring either a more complex last structure or damage to the upper. Damaged parts of the upper include deformation and the inner surface sticking to the last.

[0035] Based on this, in order to solve at least some of the above problems, the embodiments of this application improve the manufacturing process of the shoe upper so as to take into account the shape of the shoe upper when separating it from the shoe last.

[0036] According to some embodiments of this application, see [link / reference]. Figure 1 , Figure 1 This is a schematic flowchart of a shoe manufacturing method according to an embodiment of this application. The shoe manufacturing method provided in an embodiment of this application includes: Step S10: An outer layer is formed on the outer surface of the shoe or sock fitted onto the shoe last; the outer layer is thermoplastic. Step S20: Heat the socks and outer layer until they are bonded together to form the shoe upper; Step S30: Heat the shoe upper to a separable state and detach the shoe upper from the shoe last; in the separable state, the inner side of the shoe upper softens, while the outer side of the shoe upper does not soften; Step S40: Using the shoe upper as a base, process it to form a shoe.

[0037] In step S10, continue to refer to Figure 1 as well as Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of the shoe and socks being fitted onto the shoe last in a shoe manufacturing method according to one embodiment of this application. Figure 3This is a schematic diagram of a shoe last having a sock and an outer layer in a shoe manufacturing method according to an embodiment of this application. The shoe last 1 may have a three-dimensional outer surface corresponding to the shape of the shoe's inner cavity. When the sock 2 is fitted onto the shoe last 1, the three-dimensional outer surface of the shoe last 1 supports the sock 2, so that the sock 2 has the three-dimensional shape of the shoe last 1. "The outer layer 3 is thermoplastic" means that the material constituting the outer layer 3 is a thermoplastic material, which can soften and become malleable under heating conditions.

[0038] In step S20, "heating to a bonded state" means heating to a temperature condition sufficient to bond the shoe / sock 2 and the outer layer 3 together. After heating, the thermoplastic outer layer 3 softens, thereby acquiring adhesive and fusion capabilities. Under this temperature condition, an interfacial bond is achieved between the outer layer 3 and the shoe / sock 2. It can be understood that the outer layer 3 is a surface component disposed on the outside of the shoe / sock 2, bonded to it, and together forming the overall upper of the shoe. That is, with the shoe / sock 2 as the inner base, the outer layer 3 is located on the outward-facing side of the shoe / sock 2. The outward-facing side of the shoe / sock 2 is its outer surface. Correspondingly, the inner side of the shoe / sock 2 is the side that contacts the surface of the shoe / sock 2 and the shoe last 1.

[0039] For example, when the shoe / sock 2 and the outer layer 3 are heated, the outer layer 3 softens, allowing its material to penetrate into the shoe / sock 2, thus forming a one-piece upper. It is important to note that the softening of the outer layer 3 in the bonded state does not alter its overall shape. For instance, in the bonded state, the side of the outer layer 3 that is in contact with the shoe / sock 2 softens, while the side of the outer layer 3 facing away from the shoe / sock 2 remains hardened to maintain its shape.

[0040] In step S30, the separable state refers to a physical state reached after the shoe upper is heated. In the separable state, the shoe upper has the conditions to peel and detach from the shoe last 1, reducing the risk of tearing or stretching deformation caused by rigidity, adhesion, and shaping tension. The separable state does not necessarily mean that the entire upper is softened; it is a state that meets the demolding conditions.

[0041] The inner side of the shoe upper is the side facing the shoe last 1, that is, the side in contact with the surface of the shoe last 1. When heated, the shoe upper softens, reducing the bonding tension and the constraint between it and the shoe last 1, facilitating demolding. The outer side of the shoe upper is the side facing away from the shoe last 1 and towards the external environment. During heating, the temperature of the outer side of the shoe upper does not reach the softening condition, which helps maintain its original rigidity and shape, preserving the shoe upper's appearance and reducing the risk of collapse and wrinkling during demolding. Therefore, in this embodiment, demolding is achieved by softening the inner side of the shoe upper, while the outer side of the shoe upper maintains its shape.

[0042] For example, taking a shoe upper material comprising thermoplastic polymer fibers, in a separable state, the thermoplastic polymer fibers in the shoe upper soften, thereby reducing the interfacial adhesion between the shoe upper and the shoe last 1, forming a separable interface. It should be noted that, taking a shoe upper material comprising thermoplastic polymer fibers as an example, the softening described in this application embodiment refers to the thermoplastic polymer fibers in the shoe upper changing from their original solid and dense state to a partially flowing state, but the shoe upper as a whole does not completely melt or undergo significant morphological changes.

[0043] In step S40, the shoe upper is a semi-finished product composed of the sock 2 and the outer layer 3. "Processing the shoe based on the shoe upper" means using the prefabricated shoe upper as a basic component, and then assembling and processing it with other parts such as the sole to obtain a finished shoe. For example, it can be processed with accessories such as the sole, tongue, and laces to assemble it into a finished shoe.

[0044] For example, the upper, which is detached from the shoe last 1, is fixedly connected to the sole to form a shoe.

[0045] By heating the sock 2 and the outer layer 3 to a bonded state, the thermoplastic outer layer 3 and the sock 2 are bonded together, forming a more robust upper. This also ensures a tighter fit between the upper and the last 1, improving the shape accuracy of the upper. Furthermore, heating the upper to a separable state allows for easier detachment from the last 1, reducing the probability of deformation or damage during the detachment process. Therefore, it is advantageous to detach the upper from the last 1 while maintaining its shape, thus improving the overall quality of the shoe.

[0046] According to some embodiments of this application, the upper is attached to the sole before the upper is detached from the last 1.

[0047] When the upper is on the last 1, the upper is fixedly connected to the sole, making the sole installation faster and more convenient.

[0048] According to some embodiments of this application, when forming the outer layer 3 on the shoe or sock 2, the sole is formed by an integral molding process.

[0049] For example, when the outer layer 3 is printed onto the shoe or sock 2 using a 3D printing process, the sole can also be printed together using a 3D printing process.

[0050] The one-piece molding process ensures a stronger connection between the upper and sole, further accelerating shoe manufacturing efficiency and simplifying the shoe manufacturing process.

[0051] Based on some embodiments of this application, continue to refer to Figure 2When the sock 2 is placed on the shoe last 1, the sock 2 fits tightly to the shoe last 1, and an initial contact state is formed at the interface between the sock 2 and the shoe last 1 that can be heat-fused and separated. This initial contact state that can be heat-fused and separated means that the area where the sock 2 contacts the shoe last 1 softens, allowing the sock 2 to be peeled off the shoe last 1 as a whole.

[0052] By creating a heat-fusible initial contact state at the interface between the shoe / sock 2 and the shoe last 1, it is easier to slip the shoe / sock 2 onto the shoe last 1, effectively reducing the resistance when slipping it onto the shoe last 1. This also reduces the risk of damage to the shoe / sock 2.

[0053] According to some embodiments of this application, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 , Figure 6 This is a schematic diagram illustrating the use of a spray molding process to form the outer layer in a shoe manufacturing method according to an embodiment of this application. Figure 7 This is a schematic diagram illustrating the use of 3D printing to form the outer layer in a shoe manufacturing method according to an embodiment of this application. Figure 8 This is a schematic diagram illustrating the use of a melt-coating process to form the outer layer in a shoe manufacturing method according to an embodiment of this application. The outer layer 3 is directly formed on the outer surface of the shoe / sock 2 using modern molding processes. Modern molding processes include at least one of spray molding, melt-coating, 3D printing, lamination, and injection molding.

[0054] For example, continue to refer to Figure 6 Modern molding processes can refer to spray molding, where a robotic arm drives a nozzle 51 to spray continuous polymer filaments onto the outer surface of the shoe or sock 2 to form a porous mesh outer layer 3; or to cladding molding, where a pre-prepared multilayer thermoplastic polymer film sheet is covered onto the outer surface of the shoe or sock 2, softened by zoned heating, and adhered to the outer surface of the shoe upper by its own thermoplastic tension or with the assistance of an external flexible pressure roller 72, i.e., the flexible pressure roller 72 rolls the shoe upper along the rolling track 73, and then they are thermally fused to form the outer layer 3; or to 3D printing molding, where polymer material is deposited layer by layer on the outer surface of the shoe or sock 2 according to a preset three-dimensional model using 3D printing equipment to form the outer layer 3; or to injection molding, where the outer layer 3 material is injected into a preset outer layer 3 shape mold to form the outer layer 3; or to lamination molding, where multiple polymer sheets are laminated together to form the outer layer 3.

[0055] Taking spray molding as an example, the process of forming the outer layer 3 on the outer surface of the shoe / sock 2 using spray molding includes: the shoe last 1, already fitted with the shoe / sock 2, is held by a movable spraying robotic arm 52 and positioned below a nozzle 51. The nozzle 51 is connected to a melting unit via a material supply system, which heats the solid thermoplastic polymer outer layer 3 material (TPU granules in this embodiment) to a molten state. For example, the nozzle 51 sprays continuous TPU filaments. The filaments form a spray trajectory between the nozzle 51 and the outer surface of the shoe / sock 2. The material outlet temperature of the nozzle 51 is approximately 220°C, much higher than the softening temperature T1 (approximately 80°C) of the TPU fibers in the shoe / sock 2. However, due to the relatively high relative speed between the nozzle 51 and the robotic arm (approximately 10 m / min) and the short single-point contact time, the shoe / sock 2 as a whole does not undergo melting deformation; only slight fusion occurs on the local surface in contact with the filaments. This local fusion allows the shoe / sock 2 and the finally formed outer layer 3 to form a material-level bond at the interface between them. The movement path of nozzle 51 can be pre-programmed. In this embodiment, the movement path of nozzle 51 is designed to form a porous mesh structure on the outer surface of the sock 2 with filaments. Thermal fusion occurs at the intersections of the filaments, thereby forming a self-supporting porous mesh outer layer 3. The entire spraying process takes approximately 1.5 minutes, and the weight of the formed outer layer 3 is approximately 28 grams.

[0056] Spray molding can create more complex structures and better configure the stress distribution on the shoe upper, resulting in a shoe upper with superior stress distribution.

[0057] Taking the refractory molding process as an example, continue to refer to Figure 8Two pre-prepared TPU film sheets are applied to the outer surface of the shoe / sock 2. The outer layer is approximately 0.3 mm thick, and the inner layer is approximately 0.2 mm thick. The shoe last 1 assembly is then placed into the refractory molding cavity 71. The inner wall of the refractory molding cavity 71 has 20 independently controllable heating zones. A movable flexible pressure roller 72 is also provided in the refractory molding cavity 71. The flexible pressure roller 72 moves circumferentially around the outer side of the shoe last 1 assembly, applying appropriate mechanical pressure to the film sheet to ensure it adheres tightly to the outer surface of the shoe / sock 2. While the flexible pressure roller 72 moves, the heating zones heat the film sheet in sections. Specifically, the toe area 21 is heated to approximately 160°C to form a dense structure and improve abrasion resistance; the instep area 22 is heated to approximately 130°C to form a softer structure and improve breathability; and the heel area 24 is heated to approximately 150°C to form a medium-dense structure and improve stability. Under heating, the film sheet softens and, due to its own thermoplastic tension and the pressing action of the flexible roller 72, further adheres to the outer surface of the shoe / sock 2, with adjacent sheets undergoing mutual thermal fusion. The entire heating and pressing process takes approximately 3 minutes. After heating, the film sheet cools and solidifies into the outer layer 3, which has differentiated properties in different zones.

[0058] For example, when the outer layer 3 is formed on the outer surface of the shoe or sock 2 through a melt-coating process, the shoe or sock 2 contains 50 parts by weight of TPU fiber (softening temperature T1 is about 100°C), 25 parts by weight of silver ion antibacterial fiber, 15 parts by weight of phase change microcapsule fiber and 10 parts by weight of hollow cushioning fiber, which carries the composite functions of antibacterial, temperature control and cushioning.

[0059] The outer shoe upper formed on the shoe and sock 2 by the refractory molding process can control the thickness of different areas of the outer layer 3, and at the same time make the outer layer 3 fit more tightly and the connection between the shoe and sock 2 more firmly.

[0060] Taking 3D printing molding process as an example, continue to refer to Figure 7 The process of forming the outer layer 3 on the outer surface of the shoe / sock 2 using 3D printing includes: After the shoe / sock 2 is fitted onto the shoe last 1, it is placed on the work platform 62 of a fused deposition modeling (FDM) 3D printer. Based on a pre-set personalized 3D model, the 3D printer uses TPU printing filaments through the nozzle 61 to deposit the outer layer 3 layer by layer on the outer surface of the shoe / sock 2. The printing temperature is approximately 200℃, the layer thickness is approximately 0.15 mm, and the entire printing process takes approximately 6 minutes.

[0061] For example, the shoes and socks 2 contain 40 parts by weight of TPU fiber (softening temperature T1 is about 90°C), 30 parts by weight of elastic Lycra fiber, 20 parts by weight of phase change microcapsule fiber and 10 parts by weight of waterproof fiber containing polytetrafluoroethylene, which carries the composite functions of waterproof, temperature control and elastic fit.

[0062] The outer shoe upper formed by 3D printing can have more complex structural shapes.

[0063] By employing various modern molding processes to form the outer shoe upper on the shoe / sock 2, different functional outer shoe uppers can be created according to requirements, thus better meeting the specifications of various shoe uppers. Specifically, forming the outer layer 3 using a spray molding process can create an outer layer 3 with a porous mesh structure. Forming the outer layer 3 using a cladding molding process can create a differentiated sheet outer layer 3. Forming the outer layer 3 using a 3D printing process can create a personalized geometric structure outer layer 3. Forming the outer layer 3 using a lamination molding process can create a composite film outer layer 3, or forming the outer layer 3 using an injection molding process can create a monolithic injection-molded outer layer 3.

[0064] According to some embodiments of this application, the material of the shoe upper may also include thermoplastic polyurethane, thermoplastic elastomer, composite substrate, etc., without specific limitations.

[0065] For example, the thermoplastic polymer fiber is made of thermoplastic polyurethane (TPU) with a softening temperature T1 of approximately 80°C; the functional fiber is made of Coolmax antimicrobial fiber, providing a combination of breathable, moisture-wicking and antimicrobial functions.

[0066] According to some embodiments of this application, the heating methods for the shoe last 1, shoe and sock 2 and outer layer 3 include, but are not limited to: hot air circulation heating, infrared radiation heating, induction heating and hot water immersion heating.

[0067] Different heating methods can be selected based on the actual process to soften the inner side of the shoe upper while leaving the outer side unsoftened. Hot air circulation heating ensures more uniform heating across the entire shoe upper surface, resulting in a more even fusion between the outer layer 3 and the sock / shoe layer 2. Infrared radiation heating provides a cleaner heating environment, effectively reducing contamination. Induction heating allows for more precise temperature control of different areas of the shoe upper, better accommodating varying material thicknesses. Hot water immersion heating offers more accurate temperature control, achieving a more separable state. By selecting different heating methods, more process requirements can be met.

[0068] According to some embodiments of this application, after the shoe upper is detached from the shoe last 1, the sock 2 remains permanently within the outer layer 3 as an inner lining layer. At this time, the shoe upper has an outer layer composed of the outer layer 3, an inner layer composed of the sock 2, and an inner cavity enclosed by the shoe upper. The outer layer has an outer layer function, and the inner layer has an inner layer function.

[0069] For example, the outer layer functions include the structural functions, aesthetic functions, and performance functions of the shoe.

[0070] For example, the inner layer primarily has functional and comfort features that come into direct contact with the wearer's feet.

[0071] By combining the inner and outer layers, different functions can be set in the corresponding functional areas on the inner and outer layers respectively, thereby reducing the possibility of conflicts between the inner and outer layer functions when setting the inner layer functions, and thus allowing for more complex functions to be set on the shoe upper.

[0072] According to some embodiments of this application, the sole is attached to the bottom of the upper by at least one of bonding, sewing or integral molding to obtain a complete footwear product.

[0073] For example, the sole may be made of any material suitable for soles, including but not limited to rubber, thermoplastic polyurethane, thermoplastic elastomer, and ethylene-vinyl acetate copolymer foam.

[0074] By using a variety of sole materials, the needs for a wider range of shoe functions can be met.

[0075] Based on some embodiments of this application, continue to refer to Figure 3 and Figure 9 , Figure 9 This is a schematic diagram illustrating the process of detaching the shoe and sock from the shoe last in a shoe manufacturing method according to an embodiment of this application. The shoe upper, consisting of the shoe and sock 2 and the outer layer 3, is detached from the shoe last 1 and removed.

[0076] Since the sock 2 and the outer layer 3 have been firmly connected through material-level bonding, and a separable interface has been formed between the sock 2 and the last 1 (i.e., in the separable state, the inner side of the shoe upper is softened, while the outer side of the shoe upper is not softened), the functional carrier sock 2 together with the outer layer 3 can be easily removed from the last 1 as a whole. At the same time, the entire demolding process does not require applying force to the outer surface of the shoe upper when the shoe upper is removed, thus better protecting the shoe upper.

[0077] According to some embodiments of this application, refer to Figure 4 , Figure 4 This is a schematic diagram illustrating the structural division of functional areas on a shoe or sock in a shoe manufacturing method according to one embodiment of this application. In the assembled state, modern molding processes can employ methods such as zoned heating.

[0078] For example, the zoned heating specifically includes heating the toe area 21 to about 160°C to form a dense structure and improve abrasion resistance; heating the instep area 22 to about 130°C to form a softer structure and improve breathability; and heating the heel area 24 to about 150°C to form a medium-dense structure and improve stability.

[0079] By employing methods such as rapid movement or zoned heating, the entire shoe upper remains unsoftened and deformed, with fusion occurring only on the localized surfaces in contact with the outer layer 3. This results in a direct material-level bond between the outer layer 3 and the shoe / sock 2 at their interface, forming the shoe upper without the need for any additional external adhesives. Since the softening temperatures of the material differ in different functional areas of the shoe / sock 2, zoned heating allows for more precise heating of the shoe / sock 2. Material-level bonding refers to the molecular-level interpenetration or eutectic melting of the polymer materials of the two components at the interface, forming a strong, non-mechanically separable bond. For example, material-level bonding can manifest as a fusion bond, where two components are connected through partial melting and re-solidification.

[0080] According to some embodiments of this application, the shoes and socks 2 are integrally woven by at least one of the following processes: knitting, weaving, or sewing, presenting a seamless sock-like structure.

[0081] The one-piece knitted sock 2 allows its shape to conform to the three-dimensional outer surface of the shoe last 1. This conformity means that the inner surface of the sock 2 matches the three-dimensional outer surface of the shoe last 1 in both size and shape, enabling the sock 2 to fit snugly against the surface of the shoe last 1.

[0082] Based on some embodiments of this application, continue to refer to Figure 2 The shoe last 1 may be made of metal. Alternatively, the shoe last 1 may be made of a heat-resistant polymer. The heat resistance temperature of the shoe last 1 shall not be lower than 250°C.

[0083] For example, when the shoe last 1 is made of metal, it can be made of high-temperature resistant metals such as aluminum alloy, stainless steel or titanium alloy.

[0084] For example, when the shoe last 1 is made of a heat-resistant polymer, it can be made of materials such as high-temperature resistant nylon, polyetheretherketone, or polytetrafluoroethylene.

[0085] The shoe last 1 is made of high-temperature resistant materials to ensure that it can withstand the processing temperatures in subsequent steps. This ensures that the shoe last 1 will not deform or soften at high temperatures.

[0086] According to some embodiments of this application, the softening temperature of the shoe upper is a first temperature T1, the heating temperature of the bonded state is a second temperature T2, and the heating temperature during the process of heating the shoe upper to a separable state is a third temperature T3; wherein, T1+10℃≥T3≥T1-10℃, T1+60℃≥T2≥T1+30℃.

[0087] For example, the softening temperature of the shoe upper, the first temperature T1, can refer to a specific softening temperature point (e.g., when a single or pure material is used as the thermoplastic polymer fiber), or it can refer to a softening temperature range (e.g., when a mixture of different substrates is used as the thermoplastic polymer fiber).

[0088] For example, by heating, the interface temperature between the shoe / sock 2 and the shoe last 1 reaches a third temperature T3. Within this temperature range, the thermoplastic polymer fibers in the shoe / sock 2 soften, thereby reducing the interfacial adhesion between the shoe / sock 2 and the shoe last 1, forming a separable interface. This allows the shoe upper to be better separated from the shoe last 1.

[0089] By controlling the range of the second temperature T2, an interfacial thermoplastic bond occurs between the shoe / sock 2 and the outer layer 3, making the connection between them stronger. Simultaneously, by controlling the range of the third temperature T3, the inner surface of the shoe upper softens while preventing the outer surface from softening. However, if the third temperature is too high, the shoe / sock 2 will separate from the outer layer 3 again. Therefore, the maximum temperature of T3 needs to be limited. Furthermore, by controlling the upper limit of the third temperature T3, the phenomenon of the shoe / sock 2 separating from the outer layer 3 is effectively reduced, thereby improving the quality of the shoe upper. By controlling the lower limit of the third temperature T3, the shoe upper can be detached from the shoe last 1 more completely.

[0090] It's important to note that the separable state is not simply heating; the heating temperature is the third temperature T3, not heating the entire upper to T3. When heating the upper, the temperature change is uneven, causing some areas to heat up first. In other words, when heating the upper to T3, certain areas, such as the inner side, will soften first. Meanwhile, other areas remain hardened. The separable state is where some areas soften while others remain hardened, maintaining the overall shape of the upper. Heating the entire upper to T3 would compromise its shape, affecting the overall quality of the shoe.

[0091] According to some embodiments of this application, the first temperature T1 is 60°C to 130°C; and / or during the heating to a separable state, the third temperature is maintained for 5 to 60 seconds.

[0092] For example, the first temperature T1 can be 60°C, 70°C, 80°C, 90°C, 100°C, 110°C, 120°C, or 130°C. The first temperature T1 can be any other value within the range of 60°C to 130°C, and no specific limitation is made here.

[0093] For example, the first temperature T1 can be 80°C, 90°C, 100°C, 110°C, or 120°C. The first temperature T1 can be any other value within the range of 80°C to 120°C, and no specific limitation is made here.

[0094] In the separable state, the interface area between the shoe / sock 2 and the shoe last 1 is locally softened, rather than completely melted. Therefore, the time spent at the third temperature needs to be limited to reduce the risk of deformation. A shorter time at the third temperature will make it difficult for the shoe upper to detach from the shoe last 1, and a shorter time at the third temperature will cause deformation of the shoe upper. It is important to note that the third temperature and the duration of holding it can be dynamically adjusted according to the materials of the shoe / sock 2 and the outer layer 3. When the first temperature T1 is below the lower limit mentioned above, the footwear may suffer shape loss due to increased ambient temperature in everyday wearing environments (such as the high temperature inside a car under summer sunlight); when the first temperature T1 is above the upper limit mentioned above, the energy consumption of the demolding process will increase significantly and the heating time will be prolonged, affecting production efficiency. Therefore, limiting the first temperature T1 between 60℃ and 130℃ improves production efficiency while reducing the risk of damage to the shoe upper.

[0095] According to some embodiments of this application, at least a portion of the material of the shoes and socks 2 includes the target thermoplastic material.

[0096] For example, the shoes and socks 2 contain at least a portion of thermoplastic polymer fibers having a first softening temperature T1.

[0097] For example, the thermoplastic polymer fiber in the footwear 2 is selected from at least one of thermoplastic polyurethane (TPU) fiber, polyether ester elastomer (TPEE) fiber, polyamide (PA) hot melt fiber, polyamide block polyether elastomer (PEBAX) fiber, and ethylene-vinyl acetate copolymer (EVA) fiber.

[0098] By also incorporating thermoplastic material into the sock 2, the connection between the sock 2 and the shoe upper becomes more secure.

[0099] According to some embodiments of this application, the thickness of the shoes and socks 2 is 0.5 mm to 3 mm.

[0100] For example, the thickness of the sock 2 can be 0.5 mm, 1 mm, 1.5 mm, 2 mm, or 3 mm. The first temperature T1 can be any other value within the range of 0.5 mm to 3 mm, without specific limitation herein.

[0101] If the shoe / sock 2 is too thin, it may tear when heated. If the shoe / sock 2 is too thick, it will not only affect the functionality of the shoe upper but also reduce the efficiency of shoemaking. Therefore, limiting the thickness of the shoe / sock 2 improves both the quality of the shoe upper and the processing efficiency.

[0102] Based on some embodiments of this application, continue to refer to Figure 4 The shoe and sock 2 are heated in sections by using the shoe last 1.

[0103] For example, a higher temperature is set adaptively for areas of greater thickness on the shoe / sock 2, and a lower temperature is set adaptively for areas of less thickness on the shoe / sock 2.

[0104] For example, the heating temperature of the shoe last 1 on different areas of the shoe and sock 2 is adjusted according to the softening temperature of different materials in different areas of the shoe and sock 2.

[0105] By using zoned heating, the inner side of the shoe / sock 2, which has different functional areas, can be softened while the outer side of the shoe upper remains hardened, thus achieving a separable state. It's important to note that if the same heating temperature is used for shoes / socks 2 with different functional areas, some areas on the inner side of the shoe / sock 2 may not have softened while the outer side of the shoe upper has already begun to soften. In this case, the shoe upper cannot be separated, making demolding impossible. Forcing demolding will result in deformation and damage to the shoe upper.

[0106] According to some embodiments of this application, temperature sensors are set in different heating areas on the shoe last 1 to provide real-time feedback on the temperature of different heating areas.

[0107] By incorporating temperature sensors, the temperature of different heating zones on the shoe last 1 can be more precisely controlled, allowing for more accurate heating of the shoe upper. This, in turn, improves the quality of the shoe upper and manufacturing efficiency.

[0108] Furthermore, an algorithm is set to control the heating of different heating areas of the shoe last 1, thereby more accurately controlling the heating temperature of different areas of the shoe and sock 2.

[0109] According to some embodiments of this application, refer to Figure 5 , Figure 5 This is a schematic diagram illustrating the heating process within a hot-melt chamber in a shoe manufacturing method according to an embodiment of this application. The shoe last 1 and the upper on the shoe last 1 are placed together into the heating chamber 41 where hot air 42 circulates.

[0110] For example, the temperature of the heating chamber 41 is set to T3 = 85°C, where T1-10°C≤T3≤T1+10°C. T1 is set to 80°C, therefore the temperature of the heating chamber 41 is set to 85°C. The heating time is approximately 10 seconds. Under this heating condition, the TPU fibers in the sock 2 soften at the interface between the sock 2 and the shoe last 1, significantly reducing the interfacial adhesion between the sock 2 and the shoe last 1, forming a separable interface.

[0111] By circulating hot air 42 to heat the shoe last 1 and the shoe upper, the heating of the shoe last 1 and the shoe upper can be more even.

[0112] According to some embodiments of this application, the target thermoplastic material accounts for 20% to 60% of the weight of the footwear 2; and / or the target thermoplastic material is selected from at least one of thermoplastic polyurethane fiber, polyether ester elastomer fiber, polyamide hot melt fiber, polyamide block polyether elastomer fiber, and ethylene-vinyl acetate copolymer fiber.

[0113] For example, the weight percentage of the target thermoplastic material in the footwear 2 can be set to 20%, 30%, 40%, 50% or 60%, and the weight percentage of the target thermoplastic material in the footwear 2 can be set to any other value in the range of 20% to 60%, without any specific limitation.

[0114] For example, the target thermoplastic material accounts for 30% to 50% of the weight of the shoe / sock 2. The weight percentage of the target thermoplastic material in the shoe / sock 2 can be set to 30%, 40%, and 50%, and can be set to any other value within the range of 20% to 60%, without specific limitations. When the weight percentage is higher, the interface separation between the shoe / sock 2 and the shoe last 1 is easier; when the weight percentage is lower, the final shape retention performance of the shoe / sock 2 is better.

[0115] By limiting the weight percentage of the target thermoplastic material in the shoe / sock 2 to a moderate range, the finished product maintains good performance and also facilitates easier separation of the interface between the shoe / sock 2 and the shoe last 1.

[0116] According to some embodiments of this application, before the outer layer 3 is formed on the outer surface of the shoe last 2 fitted onto the shoe last 1, the process includes: forming a release layer on the shoe last 1; or polishing the shoe last 1.

[0117] For example, the outer surface of the shoe last 1 is polished to further reduce the interfacial adhesion between the shoe last 1 and the sock 2.

[0118] For example, the outer surface of the shoe last 1 is pre-coated with a release layer to further reduce the interfacial adhesion between the shoe last 1 and the sock 2.

[0119] By reducing the interfacial adhesion between the shoe last 1 and the shoe sock 2, the shoe upper can be more easily detached from the shoe last 1.

[0120] According to some embodiments of this application, the material of the sock 2 includes elastic fibers; before the outer layer 3 is formed on the outer surface of the sock 2 fitted onto the shoe last 1, the process includes: pre-treating the sock 2; the pre-treating process includes at least one of heating and stretching; and fitting the pre-treated sock 2 onto the shoe last 1.

[0121] For example, the pretreatment includes heating, which softens the elastic fibers inside the sock 2.

[0122] For example, the pretreatment includes stretching and heating to soften the elastic fibers inside the sock 2.

[0123] By softening the elastic fibers inside the sock 2, the elastic fibers in the sock 2 give it a certain degree of extensibility. Therefore, the sock 2 can fit tightly to the surface of the shoe last 1 without significant gaps. This also makes it easier to slip the sock 2 onto the shoe last 1 and reduces the risk of damage. The sock-slipping operation takes approximately 5 to 15 seconds. The sock-slipping operation can be automatically completed by a movable robotic arm.

[0124] Based on some embodiments of this application, continue to refer to Figure 4 The footwear 2 has multiple functional areas, and the material of the portion of the footwear 2 located in the functional areas includes functional fibers; at least two functional areas have different types of functional fibers.

[0125] For example, functional fibers include, but are not limited to, the following: antibacterial fibers containing silver or copper ions, moisture-absorbing fibers containing hygroscopic polymers, temperature-regulating fibers containing phase change microcapsules, waterproof fibers containing polytetrafluoroethylene or similar hydrophobic materials, and cushioning fibers with hollow or elastic structures. Shoes and socks 2 may contain two or more of the above functional fibers simultaneously to provide composite functionality.

[0126] For example, the footwear 2 employs different knitting densities or different combinations of functional fibers in at least two of the following areas: the toe area 21, the instep area 22, the heel area 24, and the arch area 23. For instance, the toe area 21 may use a high-density, tightly knitted structure with added abrasion-resistant reinforcing fibers to improve abrasion resistance; the instep area 22 may use a low-density, mesh-knitted structure with added moisture-wicking fibers to improve breathability; the heel area 24 may use a high-density, tightly knitted structure with added highly elastic Lycra fibers to improve support; and the arch area 23 may use a knitted design with an elastic support structure and added support fibers to provide arch support. This functional differentiation can be achieved through programmed control of modern industrial-grade knitting equipment.

[0127] For example, the shoes and socks 2 are custom-knitted based on 3D scan data of the wearer's feet. Specifically, three-dimensional geometric data of the wearer's feet can be obtained through a 3D scanning device. This data is then imported into computer-aided design software to generate a three-dimensional model of the functional carrier shoes and socks 2 that conforms to the shape of the wearer's feet. This generates a knitting program that can be recognized by knitting equipment, and industrial-grade knitting equipment is used to produce the functional carrier shoes and socks 2 according to the knitting program. This allows for the customization of different functional areas for different individuals.

[0128] According to some embodiments of this application, the functional fiber is selected from at least one of the following: antibacterial fiber containing silver or copper ions, moisture-absorbing fiber, temperature-controlling fiber containing phase change microcapsules, waterproof fiber, and cushioning fiber.

[0129] For example, antibacterial fibers are provided in the toe area 21 to provide an antibacterial effect. Abrasion-resistant reinforcing fibers are provided in the heel area 24 to improve abrasion resistance.

[0130] By using different functional fibers for different areas, the finished footwear becomes more comfortable and practical.

[0131] According to some embodiments of this application, this application provides a shoe-making system, and will continue to refer to... Figure 2 , Figure 3 as well as Figures 5 to 10 , Figure 10 This is a schematic diagram of the structure of a shoe-making system according to an embodiment of this application. The shoe-making system is used to implement the shoe manufacturing method of any of the above embodiments; the shoe-making system includes: a sock-fitting device 81 for fitting a sock 2 onto a shoe last 1; an outer layer forming device 82 for forming an outer layer 3 on the outer surface of the sock 2 fitted onto the shoe last 1; a heating device 83 for heating the shoe last 1, the sock 2, and the outer layer 3; and a demolding device 84 for removing the sock 2 and the outer layer 3 from the shoe last 1.

[0132] The sock-covering device 81 includes a movable robotic arm for gripping the entire structure of the sock 2 and the outer layer 3, or for gripping the shoe last 1. The robotic arm can move freely in three-dimensional space and can be controlled by a control unit. The control unit preferably includes circuitry (e.g., a microprocessor). For example, the movement path of the robotic arm can be pre-stored in a storage unit, and the control unit can guide the robotic arm to move along a predetermined path through the storage unit. The robotic arm can not only function as the sock-covering device 81 to fit the sock 2 onto the shoe last 1, but also drive the shoe last 1 to move.

[0133] The heating device 83 heats the interface between the shoe / sock 2 and the shoe last 1. The heating unit can use methods such as hot air circulation, infrared radiation, or induction heating to carry out the heating.

[0134] The heating unit is equipped with multiple independently controllable heating zones, which allows different heating temperatures to be applied to different areas of the functional carrier shoes and socks 2 to accommodate situations where different areas of the shoes and socks 2 have different knitting densities or functional fiber combinations.

[0135] The outer surface forming device 82 is at least one of the following: a spray forming unit, a refractory forming unit, a 3D printing forming unit, a lamination forming unit, or an injection molding unit.

[0136] The shoe and sock 2 are heated multiple times by the heating device 83 in this shoe-making system, which makes the shoe-making process more convenient and faster, and at the same time makes the shoes less prone to deformation during the manufacturing process, thus improving the quality of the shoes.

[0137] According to some embodiments of this application, the shoe-making system further includes a visual recognition device 86 for monitoring the state of the sock 2 and the outer layer 3; and / or the shoe-making system further includes a control device 85, which is signal-connected to the sock-fitting device 81, the outer layer forming device 82, the heating device 83, and the demolding device 84.

[0138] For example, the visual recognition device 86 can identify the fit of the socks 2 onto the shoe last 1 and feed the recognition result back to the control unit, which then adjusts the operating parameters of each unit based on the monitoring results of the visual recognition device 86.

[0139] By coordinating the operation of various devices through the control device 85 and monitoring the shoe manufacturing process through the vision device, the shoe manufacturing process is made more stable.

[0140] According to some embodiments of this application, this application provides a shoe manufactured by any of the shoe manufacturing methods described in the above embodiments; or, manufactured by any of the shoe manufacturing systems described in the above embodiments.

[0141] For example, the shoe includes an inner layer and an outer layer. The inner layer is a heat-fusible sock 2 pre-prepared using traditional textile processes, possessing at least one of the following functions: breathable, antibacterial, cushioning, moisture-wicking, waterproof, and heat-insulating. The outer layer is an outer surface 3 formed on the outer surface of the inner layer using modern molding processes. The inner and outer layers are thermoplastically bonded at their interface to form a material-level bond, thereby constituting an integrated double-layer upper structure.

[0142] The shoes manufactured using the aforementioned methods and systems not only possess more complex functionality but also better maintain their shape, improving the overall quality of the shoes and increasing efficiency during the manufacturing process.

[0143] The following description, in conjunction with some embodiments illustrated above, provides an exemplary description of the shoe manufacturing method provided in this application. (Refer to...) Figures 2 to 4 , Figure 6 as well as Figure 9 .

[0144] For example, a shoe / sock 2 is provided, wherein the material of the shoe / sock 2 includes thermoplastic polyurethane (TPU). The heel area 24 of the shoe / sock 2 includes abrasion-resistant reinforcing fibers. The thermoplastic polyurethane (TPU) makes the shoe / sock 2 thermoplastic, meaning it softens under heating conditions. The abrasion-resistant reinforcing fibers make the heel area 24 of the shoe / sock 2 more abrasion-resistant.

[0145] A shoe last 1 is provided, which has multiple heating zones that can heat different areas of the shoe and sock 2 at different temperatures.

[0146] The robotic arm is used to stretch the shoe and sock 2 to activate its elasticity, and after activating its elasticity, the robotic arm is used to put the shoe and sock 2 onto the shoe last 1.

[0147] After the outer layer 3 is formed on the shoe and sock 2 by spray molding, the heel area 24 of the shoe and sock 2 is heated at 120°C by the shoe last 1, and other areas are heated at 110°C, so that the heat-fusible outer layer 3 and the shoe and sock 2 soften and fuse into a single shoe upper.

[0148] Then, the shoe and sock 2 are heated through the shoe last 1, and the side of the shoe and sock 2 that is attached to the shoe last 1 is heated to 90°C so that the side of the shoe upper that is attached to the shoe last 1 is softened, while the side of the shoe upper that is not attached to the shoe last 1 is not softened, thus achieving a separable state.

[0149] When the upper is in a separable state, a robotic arm detaches the upper from the last 1. After detaching the upper from the last 1, the upper and sole are bonded together to form a complete shoe.

[0150] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0151] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for manufacturing a shoe, characterized in that, include: An outer layer is formed on the outer surface of the shoe or sock fitted onto the shoe last; The outer layer is thermoplastic; The socks and the outer layer are heated to a bonded state to form the shoe upper; Heat the shoe upper to a separable state, and detach the shoe upper from the shoe last; In the separable state, the inner side of the shoe upper is softened, while the outer side of the shoe upper is not softened; The shoe is formed by processing the aforementioned upper.

2. The method for manufacturing shoes according to claim 1, characterized in that, The softening temperature of the shoe upper is the first temperature T1, the heating temperature of the bonded state is the second temperature T2, and the heating temperature during the process of heating the shoe upper to the separable state is the third temperature T3. Among them, T1+10℃≥T3≥T1-10℃, T1+60℃≥T2≥T1+30℃.

3. The method for manufacturing shoes according to claim 2, characterized in that, The first temperature T1 is 60°C to 130°C; and / or During the heating process to the separable state, the third temperature is maintained for 5 to 60 seconds.

4. The method for manufacturing shoes according to any one of claims 1-3, characterized in that, At least a portion of the material of the footwear includes the target thermoplastic material.

5. The method for manufacturing shoes according to claim 4, characterized in that, The target thermoplastic material accounts for 20% to 60% of the weight of the material in the footwear and socks; and / or The target thermoplastic material is selected from at least one of thermoplastic polyurethane fiber, polyether ester elastomer fiber, polyamide hot melt fiber, polyamide block polyether elastomer fiber, and ethylene-vinyl acetate copolymer fiber.

6. The method for manufacturing shoes according to any one of claims 1-3, characterized in that, Before the outer layer is formed on the outer surface of the shoe or sock fitted onto the shoe last, the process includes: A release layer is formed on the shoe last; or the shoe last is polished.

7. The method for manufacturing shoes according to any one of claims 1-3, characterized in that, The materials of the shoes and socks include elastic fibers; Before the outer layer is formed on the outer surface of the shoe or sock fitted onto the shoe last, the process includes: The shoes and socks are pretreated; the pretreatment includes at least one of heating and stretching; The pre-treated socks are then fitted onto the shoe last.

8. The method for manufacturing shoes according to any one of claims 1-3, characterized in that, The shoes and socks have multiple functional areas, and the material of the portion of the shoes and socks located in the functional areas includes functional fibers; The functional fibers of at least two of the functional regions are of different types.

9. The method for manufacturing shoes according to claim 8, characterized in that, The functional fiber is selected from at least one of the following: antibacterial fiber containing silver or copper ions, moisture-absorbing fiber, temperature-controlling fiber containing phase change microcapsules, waterproof fiber, and cushioning fiber.

10. A shoe-making system, characterized in that, The shoe-making system is used to implement the shoe manufacturing method according to any one of claims 1-9; the shoe-making system includes: A sock-fitting device for fitting socks and shoes over the shoe last; An outer layer forming device is used to form an outer layer on the outer surface of the shoe or sock fitted onto the shoe last; A heating device is used to heat the shoe last, the socks, and the outer layer; and A release device for separating the sock and the outer layer from the shoe last.

11. The shoe-making system according to claim 10, characterized in that, The shoemaking system further includes a visual recognition device for monitoring the state of the shoe / sock and the outer layer; and / or The shoe-making system also includes a control device, which is electrically connected to the sock-wearing device, the outer layer forming device, the heating device, and the demolding device.

12. A shoe, characterized in that, The shoe is manufactured by the shoe manufacturing method as described in any one of claims 1-9; or by the shoe manufacturing system as described in claim 10 or 11.

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