Composite supporting plate forming technology, forming mold and composite plate sole processing technology

Abstract

The invention relates to a composite supporting plate forming process, a forming mold and a composite plate shoe sole processing technic.The composite supporting plate forming process comprises the following steps that a supporting plate is placed in the forming mold, the supporting plate is made of a metal material with the density smaller than 5 g / cm < 2 >, the supporting plate is provided with hollowed-out mesh holes, the hollowed-out proportion of the supporting plate is 50%-90%, and the hollowed-out mesh holes are formed in the forming mold; a forming gap is formed between the supporting plate and the interior of a mold cavity of the forming mold. And a TPU material is injected into the mold cavity, the supporting plate is wrapped with the TPU material to form a TPU film, and the composite supporting plate is obtained. The prepared composite supporting plate can replace a carbon plate to be used in a shoe sole, and the cost is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of footwear components, and in particular to a composite support plate forming process, a forming mold and a composite plate sole processing process. Background Art

[0002] Most of the high-end running shoes on the market currently have carbon fiber plates (also called carbon plates) embedded inside the soles. The design of carbon plate shoes helps to provide better rebound and acceleration capabilities, making runners more energy-saving during running, thereby improving running efficiency.

[0003] However, when processing and manufacturing carbon plates, they need to go through a series of processes such as fiber pretreatment, impregnation molding, curing, post-molding processing, mold making, cutting of impregnation materials, high-temperature curing molding and polishing. The processing process is relatively complicated and time-consuming, so the cost of carbon plates is relatively high. Summary of the invention

[0004] Based on this, the present application provides a composite support plate forming process, a forming mold and a composite plate sole processing process, which greatly reduces costs by replacing the role of carbon plates in the soles with low-cost lightweight composite support plates.

[0005] The present application provides a composite support plate forming process, which adopts the following technical solution: A composite support plate forming process comprises the following steps: placing a support plate into a forming mold, the support plate being made of a metal material with a density less than 5g / cm³, the support plate having hollow mesh holes, the hollowing ratio of the support plate being 50% to 90%, and a forming gap being provided between the support plate and the inside of a mold cavity of the forming mold; injecting a TPU material into the mold cavity, the TPU material wrapping the support plate to form a TPU film, and obtaining a composite support plate.

[0006] By adopting the above technical solution, a support plate is made of a lightweight metal material with a density of less than 5g / cm³. The support plate with a hollow mesh also has high strength, rigidity and lightweight effect. After being installed inside the sole instead of the carbon plate, it can provide support, rebound and acceleration capabilities, making runners more energy-saving during running.

[0007] Secondly, since lightweight metal materials can be processed and formed in one step through casting, extrusion or 3D printing, the processing process is simpler and the production cost is lower, which is conducive to reducing the overall price of shoes and alleviating the burden on consumers.

[0008] Furthermore, by integrally forming a TPU film on the surface of the support plate to obtain a composite support plate, the TPU film can not only serve as a protective film to reduce rust on the support plate, making it easier to transport and sell separately, but also serve as an intermediate connecting medium between the support plate and the sole material to greatly improve the bonding strength between the composite support plate and the sole material, thereby reducing debonding. Furthermore, the one-piece injection molding method is low in processing difficulty and high in efficiency, and the manufacturing cost is greatly reduced.

[0009] In summary, a composite support plate is made of lightweight metal material with a hollow mesh and an injection-wrapped support plate TPU material, that is, the TPU film is integrally injection-molded and wrapped around a lightweight support plate to obtain a composite support plate. The composite support plate has the advantages of lightness, high strength and high rigidity, and can provide support, rebound and acceleration capabilities after being installed inside the sole to replace the carbon plate, making it more labor-saving for runners during running. In addition, the molding process of the support plate and the composite support plate is simple and low-cost, which is conducive to reducing the overall price of the shoes and alleviating the burden on consumers.

[0010] Optionally, the support plate is integrally formed by a 3D printing process.

[0011] Optionally, before injecting the TPU material, at least one of the hollow mesh holes of the support plate is blocked by a blocking member, and the TPU material does not cover the blocked hollow mesh hole, so that the TPU film has a hollow structure.

[0012] By adopting the above technical solution, the TPU film has a hollow structure to improve the penetration rate of the glue when cold-bonding the sole, thereby increasing the bonding area and reducing debonding.

[0013] Optionally, the support plate includes a forefoot portion, an arch portion and a heel portion in sequence, and the front end of the forefoot portion is bent upward; the positioning and holding state of the support plate in the mold cavity is set to a prestressed state, and under the prestressed state, the front end of the forefoot portion is elastically bent upward by 0~5° compared to its own middle portion; TPU material is injected into the mold cavity, and the TPU material wraps the support plate; after the TPU film is formed, the prestressed state is released, and the composite support plate recovers its deformation.

[0014] By adopting the above technical scheme, the support plate is positioned and clamped when the molding mold is closed. When the support plate is positioned and clamped, the clamping force will force the front end of the support plate to bend upward elastically by 0~5°, so that the support plate is in a prestressed state. The TPU material is injected and wrapped in the prestressed state, and the TPU film is formed. In the molding mold in the closed state, the TPU film is not stretched or compressed. After the molding mold is opened, there is no clamping force, and the composite support plate recovers its elastic deformation and releases the prestressed state. At this time, the TPU film on the upper surface of the composite support plate is slightly stretched, and the TPU film on the lower surface of the composite support plate is slightly compressed, that is, the TPU film is in a prestressed state. During the use of the sole combined with the composite support plate, such as during jumping or running, The large bending amplitude at the forefoot of the sole will cause the TPU film on the upper surface of the composite support plate to change from micro-stretching to compression, and the TPU film on the lower surface of the composite support plate to change from micro-compression to tension. Compared with the composite support plate in a non-prestressed state, although the deformation amount of the TPU film is the same, because the TPU film on the upper surface of the composite support plate changes from micro-stretching to compression, and the TPU film on the lower surface of the composite support plate changes from micro-compression to tension, the compression or tension deformation degree of the TPU film of the composite support plate is smaller than that of the composite support plate in a non-prestressed state, thereby reducing the compression or tension deformation degree of the TPU film, which may lead to fatigue failure or deformation tearing damage of the TPU film.

[0015] Secondly, the TPU film serves as the intermediate connecting medium between the support plate and the sole material. When the compression or tension deformation of the TPU film is small, it can reduce the debonding of the TPU film from the sole material due to excessive deformation and tearing, thereby increasing the service life of the sole.

[0016] Optionally, the support plate has a plurality of cross-arranged ribs, the angle between adjacent cross-ribs is 10°~45°, and the ribs are combined to form the hollow mesh; after the TPU film is formed, the prestressed state is released and the composite support plate recovers its deformation; the composite support plate is taken out, and a slit is made on the surface of the TPU film, the cut slit corresponds to the ribs, and the depth of the cut slit is two-thirds of the thickness of the TPU film.

[0017] By adopting the above technical scheme, cutting is performed along the length direction of the ribs when the TPU film of the composite support plate is in a prestressed state, which can eliminate a part of the prestress of the TPU film on the upper surface of the composite support plate, greatly increase the compressibility of the TPU film in this area, and also increase the micro-compression degree of the TPU film on the lower surface of the composite support plate, so as to greatly improve the stretchability of the TPU film in this area, so that the compression or tensile deformation degree of the TPU film of the composite support plate is smaller than that of the TPU film of the composite support plate in a non-prestressed state, thereby reducing the situation where the TPU film is prone to fatigue failure or deformation and tearing damage due to excessive compression or tensile deformation of the TPU film.

[0018] Secondly, by setting the cutting seam, glue can easily penetrate into the cutting seam during the cold-bonding sole process, thereby increasing the bonding area and bonding strength between the composite support plate and the sole material, thereby reducing debonding.

[0019] Moreover, since the cutting seam has a certain depth, the glue solidifies after penetrating into the cutting seam, and the part of the TPU film located at the inner wall relative to the cutting seam is bonded and cured. A three-dimensional soft skeleton will be formed at the bonded and cured part of the TPU film. The three-dimensional soft skeleton can increase the structural strength of the TPU film, so that the deformation degree of the TPU film is smaller, so as to reduce the compression or tensile deformation of the TPU film, which may cause the TPU film to be prone to fatigue failure or deformation and tearing damage.

[0020] The present application provides a molding die, which adopts the following technical solution: A forming mold is used in a composite support plate forming process, comprising an upper mold and a lower mold, the opposing surfaces of which cooperate to form the mold cavity, and the opposing surfaces of the upper mold and the lower mold are both provided with a plurality of positioning rods for abutting against the surface of the support plate.

[0021] Optionally, the positioning rod abutting against the front end and the middle part of the forefoot portion of the support plate is set as a prestressed positioning rod, and the vertical position of the prestressed positioning rod is adjustable.

[0022] By adopting the above-mentioned technical scheme, the abutment of the prestressed positioning rod can force the front palm part of the support plate to undergo elastic deformation, that is, the adjustable position of the prestressed positioning rod can realize the control of the elastic bending deformation angle of the support plate in the prestressed state, so as to realize the adjustment of the elastic amount of the TPU film of the support plate of different uses or sizes, so as to improve the applicability of the composite support plate.

[0023] The present application provides a composite board sole processing technology, which adopts the following technical solutions: A composite board sole processing technology comprises the following steps: fixing a composite support plate obtained by a composite support plate forming process in the sole by means of brushing glue, wherein the composite support plate is located between the midsole and the outsole or on the midsole, so as to obtain the composite board sole.

[0024] A composite board sole processing technology comprises the following steps: placing a composite support board obtained by a composite support board forming technology into an injection mold, injecting a sole material liquid into the injection mold, and contacting and connecting the sole material liquid with the composite support board to form a composite board sole.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. A composite support plate made of a lightweight metal material with a hollow mesh and a support plate TPU material is injected and wrapped, that is, the TPU film is integrally injection molded and wrapped around the lightweight support plate to obtain a composite support plate, which has lightweight, high strength and high rigidity. It can provide support, rebound and acceleration capabilities after being installed inside the sole instead of the carbon plate, making the runner more labor-saving during running; and the molding process of the support plate and the composite support plate is simple and low-cost, which is conducive to reducing the overall price of the shoes and alleviating the burden on consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the support plate of Example 1.

[0027] Figure 2 It is a side view of the support plate of Example 1.

[0028] Figure 3 It is a schematic diagram of the molding die of Example 1.

[0029] Figure 4 This is a cross-sectional view of the molding die of Example 1 in the mold clamping state.

[0030] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0031] Figure 6 It is a partial cross-sectional view of the composite support plate of Example 1.

[0032] Figure 7 This is a partial cross-sectional view of the molding die of Example 2 in the mold clamping state.

[0033] Figure 8 It is a partial cross-sectional view of the composite support plate of Example 2.

[0034] Fig. 9 This is a diagram of the three state changes of the support plate in Example 3.

[0035] Fig.10It is a partial cross-sectional view of the molding die of Example 4 in the mold clamping state.

[0036] Fig.11 It is a partial cross-sectional view of the composite support plate of Example 5.

[0037] Fig.12 It is an exploded view of the composite board sole of Example 6.

[0038] Explanation of the accompanying drawings: 1. support plate; 3. TPU film; 10. composite support plate; 11. forefoot; 12. arch; 13. heel; 15. hollow mesh; 16. rib; 20. mold cavity; 21. upper mold; 22. lower mold; 221. threaded hole; 23. positioning rod; 230. prestressed positioning rod; 231. bolt; 25. plugging piece; 31. cutting seam; 51. midsole; 52. outsole. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-12 This application is described in further detail.

[0040] Example 1 Example 1 discloses a composite support plate forming process, comprising the following steps: Figure 1-3 As shown, the support plate 1 is placed in a molding mold. The support plate 1 is made of a metal material with a density less than 5g / cm³, which can be a titanium alloy. The support plate 1 can be formed in one step by casting, extrusion or 3D printing. In this embodiment, the support plate 1 is made in one piece by 3D printing process.

[0041] In this embodiment, the support plate 1 includes a forefoot portion 11, an arch portion 12 and a heel portion 13 in sequence. The front end of the forefoot portion 11 is bent upward. In other embodiments, the support plate 1 may only have the forefoot portion 11 and the arch portion 12.

[0042] The support plate 1 has a hollow mesh 15, and the hollow ratio of the support plate 1 is 50%~90%. The hollow mesh 15 can be a round hole, a square hole or a diamond hole. In this embodiment, the support plate 1 has a plurality of cross-arranged ribs 16, and the angle between adjacent cross-arranged ribs 16 is 10°~45°, and each rib 16 encloses a hollow mesh 15.

[0043] After the support plate 1 is placed into the forming mold, Figure 4-5 As shown in the figure, the mold is closed, and at this time, there is a molding gap between the support plate 1 and the inside of the mold cavity 20 of the molding mold.

[0044] The TPU material is injected into the mold cavity 20, the TPU material fills the molding gap and the hollow mesh 15, and the TPU material wraps the support plate 1. After the TPU material solidifies, a TPU film 3 is formed. Figure 6As shown, the mold is opened to obtain the composite support plate 10.

[0045] At the same time, Example 1 also discloses a molding die, which is applied to the composite support plate molding process, specifically, as follows Figure 3-5 As shown, the molding mold includes an upper mold 21 and a lower mold 22, and the relative surfaces of the upper mold 21 and the lower mold 22 cooperate to form a mold cavity 20. A plurality of positioning rods 23 are fixed to the relative surfaces of the upper mold 21 and the lower mold 22. The upper positioning rods 23 abut against the upper surface of the support plate 1, and the lower positioning rods 23 abut against the lower surface of the support plate 1. Through the abutment, the support plate 1 is suspended in the mold cavity 20 to facilitate the molding of the TPU film 3 wrapped around the support plate 1. It can be understood that the virtual curved surface composed of the abutting end points of each positioning rod 23 in this embodiment is adapted to the surface curved surface of the support plate 1.

[0046] Furthermore, the positioning rods 23 may be evenly distributed, or arranged at several points, such as being arranged at one or more key points in the forefoot portion 11 , the arch portion 12 , or the heel portion 13 of the support plate 1 .

[0047] The implementation principle of Example 1 is: by using a lightweight metal material with a density of less than 5g / cm³ to make the support plate 1, the support plate 1 with a hollow mesh 15 also has high strength, rigidity and lightweight effect. After being installed inside the sole instead of the carbon plate, it can provide support, rebound and acceleration capabilities, making the runner more energy-saving during running.

[0048] Secondly, since the lightweight metal support plate 1 can be formed in one step by casting, extrusion or 3D printing, the processing is simpler and the production cost is lower, which is conducive to reducing the overall price of the shoes and alleviating the burden on consumers.

[0049] Furthermore, by integrally forming the TPU film 3 on the surface of the support plate 1 to obtain the composite support plate 10, the TPU film 3 can not only serve as a protective film to reduce the rust of the support plate 1, and facilitate transportation and separate sales, but also serve as an intermediate connecting medium between the support plate 1 and the sole material to greatly improve the bonding strength between the composite support plate 10 and the sole material, thereby reducing debonding. Furthermore, the one-piece injection molding method is adopted, which has low processing difficulty and high efficiency, and greatly reduces the manufacturing cost.

[0050] Example 2 The difference between the composite support plate forming process and the forming mold of Example 2 and Example 1 is that Figure 7-Figure 8As shown, the upper mold 21 and / or the lower mold 22 are fixed with a blocking piece 25, and the blocking piece 25 can be a block structure, and its shape is adapted to the hollow mesh 15; during the mold closing process, the blocking piece 25 is blocked in the hollow mesh 15 of the support plate 1, and the blocking piece 25 can assist in positioning the support plate 1 in the mold cavity 20. The number of the blocking piece 25 can be one, the number of the blocking piece 25 can be multiple, and the number of the blocking piece 25 can be consistent with the number of the hollow mesh 15.

[0051] Then, the TPU material is injected. Since the plugging member 25 is blocked in the hollow mesh 15 of the support plate 1 , the TPU material cannot flow into the hollow mesh 15 . The TPU material can only wrap the surface of the support plate 1 and fill in the unblocked hollow mesh 15 .

[0052] After the TPU material solidifies, the mold is opened to obtain the composite support plate 10. At this time, the TPU film 3 of the composite support plate 10 has a hollow structure.

[0053] Since the TPU film 3 has a hollow structure, it will increase the glue penetration rate when cold-bonding the sole, thereby increasing the bonding area and reducing debonding.

[0054] Example 3 The difference between the composite support plate forming process of Example 3 and Example 1 is that Fig. 9 As shown, Fig. 9 The first state diagram is the state before the support plate 1 is placed in the molding mold. After the support plate 1 is placed in the molding mold, the support plate 1 is positioned in the mold cavity 20. The positioning and holding state of the support plate 1 in the mold cavity 20 is set to a prestressed state. In the prestressed state, the front end of the forefoot portion 11 is elastically bent upward by 0-5° compared to its middle portion (see Fig. 9 (see the second state diagram in the figure).

[0055] The realization of the prestressed state is that the virtual curved surface composed of the abutting end points of each positioning rod 23 of the present embodiment is the surface curved surface of the forefoot portion 11 of the support plate 1 in an elastic bending state. Therefore, during the mold closing process, the mold closing pressure is achieved through the abutment of the positioning rod 23 against the surface curved surface of the support plate 1 to force the front end of the forefoot portion 11 to elastically bend upward by 0~5° compared to its own middle part.

[0056] The prestressed state can also be achieved by adjusting the positions of the positioning rods 23 with respect to the upper mold 21 and the lower mold 22, respectively. After the molds are closed, the support plate 1 is in a positioned state, and then the height position of the positioning rods 23 corresponding to the forefoot portion 11 is adjusted to force the front end of the forefoot portion 11 to bend elastically upward by 0~5° compared to its own middle portion, that is, the support plate 1 is changed into a prestressed state after the molds are closed.

[0057] After the support plate 1 is in the prestressed state, the prestressed state is maintained, and the TPU material is injected into the mold cavity 20, and the TPU material wraps the support plate 1; after the TPU film 3 is formed, the prestressed state is released, and the composite support plate 10 recovers its deformation (see Fig. 9 (see Figure 3).

[0058] The implementation principle of Example 3 is: when the support plate 1 is in a prestressed state, the TPU material is injected and wrapped while maintaining the prestressed state, and the TPU film 3 is formed. In the molding mold in the mold closing state, the TPU film 3 is not stretched or compressed. After the molding mold is opened, the upper mold 21 and the lower mold 22 have no clamping force on the composite support plate 10, and the composite support plate 10 restores its elastic deformation to release the prestressed state. At this time, the TPU film 3 located on the upper surface of the composite support plate 10 is slightly stretched, and the TPU film 3 located on the lower surface of the composite support plate 10 is slightly compressed, that is, the TPU film 3 is in a prestressed state.

[0059] During the use of the sole of the composite support plate 10, such as jumping or running, the forefoot of the sole is bent to a large extent, which will cause the TPU film 3 located on the upper surface of the composite support plate 10 to change from micro-stretching to compression, and the TPU film 3 located on the lower surface of the composite support plate 10 to change from micro-compression to tension. Compared with the composite support plate 10 in a non-prestressed state, although the deformation amount of the TPU film 3 is the same, because the TPU film 3 located on the upper surface of the composite support plate 10 changes from micro-stretching to compression, and the TPU film 3 located on the lower surface of the composite support plate 10 changes from micro-compression to tension, the compression or tension deformation degree of the TPU film 3 of the composite support plate 10 is smaller than that of the TPU film 3 of the composite support plate 10 in a non-prestressed state, thereby reducing the compression or tension deformation degree of the TPU film 3 being too large, which may cause the TPU film 3 to be prone to fatigue failure or deformation tearing damage.

[0060] Secondly, the TPU film 3 serves as the intermediate connecting medium between the support plate 1 and the sole material. When the compression or tension deformation of the TPU film 3 is small, it can reduce the debonding of the TPU film 3 from the sole material due to excessive deformation and tearing, thereby improving the service life of the sole.

[0061] Example 4 The difference between the molding die of Example 4 and Example 3 is that Fig.10 As shown, the positioning rod 23 abutting against the front end and middle part of the forefoot portion 11 of the support plate 1 is set as a prestressed positioning rod 230, and the vertical position of the prestressed positioning rod 230 is adjustable. Specifically, the upper mold 21 and the lower mold 22 are both provided with vertically arranged threaded holes 221, and the ends of the prestressed positioning rod 230 are fixed with bolts 231, and the bolts 231 are threadedly matched with the threaded holes 221.

[0062] It should be noted that the positions of other positioning rods 23 may not be adjustable.

[0063] Before mold closing, the height of the prestressed positioning rod 230 is increased by rotating the bolt 231, and the abutment of the prestressed positioning rod 230 can force the front palm portion 11 of the support plate 1 to undergo elastic deformation, that is, the position of the prestressed positioning rod 230 is adjustable, which can realize the control of the elastic bending deformation angle of the support plate 1 in the prestressed state, so as to achieve the adjustment of the elastic amount of the TPU film 3 of the support plate 1 for different uses or sizes, so as to improve the applicability of the composite support plate 10.

[0064] Example 5 The difference between the composite support plate forming process of Example 5 and Example 3 is that Fig.11 As shown, after the TPU film 3 is formed, the prestressed state is released and the composite support plate 10 recovers its deformation; the composite support plate 10 is taken out, and a slit is made on the surface of the TPU film 3, the length direction of the cutting slit 31 corresponds to the length direction of the rib 16, and the depth of the cutting slit 31 is two-thirds of the thickness of the TPU film 3.

[0065] The surface of the TPU film 3 can be cut with a utility knife, or automatically cut with a robot arm, or cut in one go with a cutting mold.

[0066] The implementation principle of Example 5 is as follows: when the TPU film 3 of the composite support plate 10 is in a prestressed state, slits are made along the length direction of the ribs 16, which can eliminate a part of the prestress of the TPU film 3 located on the upper surface of the composite support plate 10, greatly increase the compressible property of the TPU film 3 at this part, and also increase the micro-compression degree of the TPU film 3 on the lower surface of the composite support plate 10, so as to greatly improve the stretchable property of the TPU film 3 at this part, so that the compression or tensile deformation degree of the TPU film 3 of the composite support plate 10 is smaller than that of the TPU film 3 of the composite support plate 10 in a non-prestressed state, thereby reducing the situation where the compression or tensile deformation degree of the TPU film 3 is too large, resulting in fatigue failure or deformation tearing damage of the TPU film 3.

[0067] Secondly, by setting the cutting seam 31, during the cold-bonding sole process, glue can easily penetrate into the cutting seam 31, thereby increasing the bonding area and bonding strength between the composite support plate 10 and the sole material, thereby reducing debonding.

[0068] Moreover, since the cutting seam 31 has a certain depth, the glue solidifies after penetrating into the cutting seam 31, and the portion of the TPU film 3 located relative to the inner wall of the cutting seam 31 is bonded and cured. A three-dimensional soft skeleton will be formed at the bonded and cured portion of the TPU film 3. The three-dimensional soft skeleton can increase the structural strength of the TPU film 3, so that the deformation degree of the TPU film 3 is smaller, so as to reduce the compression or tensile deformation of the TPU film 3 which is too large and causes the TPU film 3 to be prone to fatigue failure or deformation and tearing damage.

[0069] Example 6 Example 6 discloses a composite plate sole processing process, comprising the following steps: Fig.12 As shown, the composite support plate 10 prepared in the above embodiment is fixed in the sole by means of adhesive brushing, and the composite support plate 10 is located between the midsole 51 and the outsole 52 or on the midsole 51 to obtain a composite plate sole.

[0070] Example 7 Example 7 discloses a composite board sole processing process, comprising the following steps: placing the composite support plate 10 prepared in the above embodiment into an injection mold, injecting sole liquid into the injection mold, and contacting and connecting the sole liquid with the composite support plate 10 to form a composite board sole.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A composite support plate forming process, characterized in that: The following steps are involved: A support plate (1) is placed in a molding die, the support plate (1) being made of a metal material having a density of less than 5 g / cm³, the support plate (1) having a hollow mesh (15), the hollowing ratio of the support plate (1) being 50% to 90%, and a molding gap being provided between the support plate (1) and the interior of a mold cavity (20) of the molding die; a TPU material is injected into the mold cavity (20), the TPU material wraps the support plate (1), so as to form a TPU film (3), thereby obtaining a composite support plate (10).

2. The composite support plate forming process according to claim 1, characterized in that: The support plate (1) is integrally formed by a 3D printing process.

3. The composite support plate forming process according to claim 1, characterized in that: Before the TPU material is injected, at least one of the hollow mesh holes (15) of the support plate (1) is blocked by a blocking member (25), and the TPU material does not cover the blocked hollow mesh hole (15), so that the TPU film (3) has a hollow structure.

4. The composite support plate forming process according to claim 1, characterized in that: The support plate (1) comprises a forefoot portion (11), an arch portion (12) and a heel portion (13) in sequence, and the front end of the forefoot portion (11) is bent upward; the positioning and holding state of the support plate (1) in the mold cavity (20) is set to a prestressed state, and in the prestressed state, the front end of the forefoot portion (11) is elastically bent upward by 0 to 5 degrees compared to its middle portion; TPU material is injected into the mold cavity (20), and the TPU material wraps the support plate (1); after the TPU film (3) is formed, the prestressed state is released, and the composite support plate (10) recovers its deformation.

5. The composite support plate forming process according to claim 4, characterized in that: The support plate (1) has a plurality of cross-arranged ribs (16), the angle between adjacent cross-arranged ribs (16) is 10° to 45°, and the ribs (16) are combined to form the hollow mesh (15); after the TPU film (3) is formed, the prestressed state is released, and the composite support plate (10) recovers its deformation; the composite support plate (10) is taken out, and a slit is made on the surface of the TPU film (3), the slit (31) corresponds to the rib (16), and the depth of the slit (31) is two-thirds of the thickness of the TPU film (3).

6. A molding die, applied to the composite support plate molding process according to any one of claims 1 to 5, characterized in that: It comprises an upper die (21) and a lower die (22), wherein the opposing surfaces of the upper die (21) and the lower die (22) cooperate to form the die cavity (20), and the opposing surfaces of the upper die (21) and the lower die (22) are both provided with a plurality of positioning rods (23) for abutting against the surface of the support plate (1).

7. The molding die according to claim 6, characterized in that: The positioning rod (23) abutting against the front end and middle portion of the forefoot portion (11) of the support plate (1) is set as a prestressed positioning rod (230), and the vertical position of the prestressed positioning rod (230) is adjustable.

8. A composite board sole processing technology, characterized by: The method comprises the following steps: fixing the composite support plate (10) obtained by the composite support plate forming process described in any one of claims 1 to 5 in the sole by means of adhesive brushing, wherein the composite support plate (10) is located between the midsole (51) and the outsole (52) or on the midsole (51), so as to obtain a composite plate sole.

9. A composite board sole processing technology, characterized by: The following steps are involved: The composite support plate (10) obtained by the composite support plate forming process according to any one of claims 1 to 5 is placed in an injection mold, and a shoe sole liquid is injected into the injection mold so that the shoe sole liquid contacts and connects with the composite support plate (10) to form a composite plate sole.

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