Metal support plate for shoe, shoe sole, shoe, and manufacturing process for shoe sole

Abstract

The present application relates to a metal support plate for a shoe, a shoe sole, a shoe, and a manufacturing process for a shoe sole. The main technical solution relates to a metal support plate for a shoe, comprising a support plate, wherein the support plate is made of a lightweight metal material having a density of less than 5 g / cm3, hollowed-out mesh holes are formed in the support plate, and the hollowed-out mesh holes account for 50%-90% of the support plate. The support plate of the present application has the advantages of high strength and high rigidity, a simple manufacturing process, and stable molding quality.

Description

Metal support plates for shoes, soles, shoe and sole manufacturing processes Technical Field

[0001] This application relates to the field of footwear components, and more particularly to a metal support plate for footwear, a sole, a shoe, and a manufacturing process for the sole. Background Technology

[0002] The design and development of footwear products has always received widespread attention, especially in the combination of functionality and comfort. Often, functional components are added to shoes, such as embedding carbon fiber plates (also known as carbon plates) inside the sole. Carbon plate shoes are designed to provide better rebound and acceleration, allowing runners to save energy and thus improve running efficiency. Alternatively, rigid plastics or carbon fiber can be used as support components for the upper to support the shape of the shoe or to provide support and protection for the foot.

[0003] The aforementioned functional components are often made of carbon fiber, mainly because carbon fiber has the advantages of being lightweight and high-strength, which can meet the requirements of shoe use.

[0004] However, carbon fiber plates require a series of processes during manufacturing, including fiber pretreatment, impregnation molding, curing, post-molding processing, mold making, cutting and impregnation material, high-temperature curing and post-processing. The process is relatively complex and time-consuming, and the complex processing conditions can easily lead to poor stability of carbon fiber plate molding quality. Summary of the Invention

[0005] To address the issues of complex manufacturing processes and low molding quality stability in existing footwear components, this application provides a manufacturing process for a metal support plate for shoes, a sole, a shoe, and a sole.

[0006] Firstly, the metal support plate for shoes provided in this application adopts the following technical solution.

[0007] A metal support plate for shoes includes a support plate, the support plate being made of materials with a density of less than 5 g / cm³. 3 It is made of lightweight metal material, and the support plate is provided with perforated mesh, with the perforated mesh accounting for 50% to 90% of the support plate.

[0008] Optionally, the support plate is integrally formed by 3D printing.

[0009] Optionally, the surface of the support plate is covered with a TPU film.

[0010] Optionally, the surface of the support plate has protruding reinforcing ribs, and at least one reinforcing rib extends along the length of the support plate.

[0011] Secondly, the shoe sole provided in this application adopts the following technical solution.

[0012] A shoe sole includes a sole body and a metal support plate for the shoe.

[0013] Optionally, the support plate is located between the midsole and the outsole of the sole body or on top of the midsole of the sole body.

[0014] Thirdly, the shoes provided in this application adopt the following technical solution.

[0015] A shoe consists of a sole and an upper.

[0016] Optionally, the support plate is located between the midsole and the outsole of the sole body or on top of the midsole of the sole body.

[0017] Optionally, the support plate is disposed at the toe of the shoe upper and / or at the heel of the shoe upper.

[0018] Fourthly, the manufacturing process of the shoe sole provided in this application adopts the following technical solution.

[0019] A manufacturing process for a shoe sole includes a one-piece molding process or an adhesive bonding process. In the one-piece molding process, the support plate is placed in an injection mold, and a shoe sole material is injected into the injection mold. The shoe sole material contacts and connects with the support plate to form the shoe sole. In the adhesive bonding process, the support plate is bonded to the midsole and outsole of the shoe sole body or to the midsole of the shoe sole body by brushing on adhesive.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. A support plate made of lightweight metal material and having a perforated mesh has the advantages of being lightweight, high strength and high rigidity, and can replace existing carbon fiber components; moreover, compared with carbon fiber components, the forming process of the support plate of this application is simple, thereby improving the forming quality stability of the support plate 1. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the support plate in Embodiment 1.

[0023] Figure 2 is a side view of the support plate of Embodiment 1.

[0024] Figure 3 is a partial cross-sectional view of the composite support plate of Example 2 at two locations.

[0025] Figure 4 is a schematic diagram of the molding die for the composite support plate of Example 2.

[0026] Figure 5 is a cross-sectional view of the mold in the molded state of Example 2.

[0027] Figure 6 is a magnified view of part A in Figure 5.

[0028] Figure 7 is a process diagram illustrating the three state changes of the support plate in Example 3.

[0029] Figure 8 is a partial cross-sectional view of the composite support plate of Example 4.

[0030] Figure 9 is a schematic diagram of the sole of Example 5.

[0031] Figure 10 is a schematic diagram of the injection mold of Example 8.

[0032] Figure 11 is a cross-sectional view of the injection mold of Example 8.

[0033] Figure 12 is a magnified view of part B in Figure 11.

[0034] Figure 13 is a schematic diagram of the support plate at the toe of the shoe upper in Embodiment 10.

[0035] Figure 14 is a schematic diagram of the support plate at the heel of the shoe upper in Embodiment 10.

[0036] Figure 15 is a schematic diagram of the shoe in Example 10.

[0037] Explanation of reference numerals in the attached diagram: 1. Support plate; 3. TPU film; 6. Upper; 11. Forefoot; 111. Toe pressure deformation section; 10. Composite support plate; 12. Arch; 13. Heel; 131. Heel clearance opening; 15. Perforated mesh; 16. Rib; 17. Reinforcing rib; 20. Mold cavity; 21. Upper mold; 22. Lower mold; 23. Positioning rod; 30. Cutting seam; 31. Lower mold base; 311. Lifting plate; 312. Rodless cylinder; 313. Perforation; 32. Upper mold 33. Mounting bracket; 34. Positioning post; 341. Fixed injection tube; 342. Cutter; 343. Cutter groove; 344. Sliding groove; 35. Positioning blind hole; 36. Adjustment mechanism; 361. Movable injection tube; 362. Hinge rod; 363. Injection tube drive assembly; 3631. First slide plate; 3632. Injection tube cylinder; 37. Bracket; 371. Limiting rod; 372. Rotating rod; 51. Midsole; 52. Outsole; 62. First part; 63. Second part; 64. Deformation notch. Detailed Implementation

[0038] The present application will be further described in detail below with reference to Figures 1-15.

[0039] Example 1

[0040] Example 1 discloses a metal support plate structure for shoes, as shown in Figures 1 and 2. The metal support plate structure includes a support plate 1. In this embodiment, the support plate 1 is designed to fit the shape of the sole and is a single metal plate. The support plate 1 includes a forefoot portion 11, an arch portion 12, and a heel portion 13 connected in sequence. In other embodiments, the support plate 1 may only have a forefoot portion 11 and an arch portion 12, or the support plate 1 may only have a heel portion 13 and an arch portion 12.

[0041] It should be noted that in other embodiments, the support plate 1 may also be two or more pieces, with some support plates 1 having only a forefoot portion 11 and / or an arch portion 12, and some support plates 1 having only an arch portion 12 and / or a heel portion 13.

[0042] The forefoot portion 11 bends towards the direction of the human foot to form a varicose vein segment. The varicose vein segment can better overcome the pressure from the human foot and reduce the possibility of the support plate 1 being deformed under pressure.

[0043] The specific shape of the support plate 1 can be further optimized. A notch is provided on the front edge of the forefoot part 11. The notch divides the forefoot part 11 of the support plate 1 into two toe pressure deformation parts 111. The big toe and the other four toes squeeze these two toe pressure deformation parts 111 respectively, causing them to deform under force, so that they can be adapted to different sports scenarios and help to further improve the wearing comfort of the shoes.

[0044] The specific shape of the support plate 1 can be further optimized. The rear edge of the heel part 13 is provided with a heel avoidance opening 131, thereby improving the elastic bending ability of the heel part 13 and reducing the discomfort of foot rubbing.

[0045] The support plate 1 has perforated mesh 15 on its surface to reduce its weight. The perforated mesh 15 can be round, square, or diamond-shaped. In this embodiment, the support plate 1 has multiple intersecting ribs 16, with the included angle between adjacent intersecting ribs 16 being 45°-70°, specifically 45°, 60°, or 70°. The ribs 16 together form the perforated mesh 15.

[0046] The proportion of perforated mesh 15 in the support plate 1 is 50% to 90%. While ensuring that the support plate 1 will not break, the proportion of perforated mesh 15 can be increased as much as possible to reduce the weight of the support plate 1 and ensure the lightness of the sole. Secondly, the proportion of perforated mesh 15 in different positions of the support plate 1 can be different, mainly adjusted according to the stress conditions of different parts of the support plate 1. The proportion of perforated mesh 15 in parts with higher stress requirements is correspondingly reduced, and the proportion of perforated mesh 15 in parts with lower stress requirements is correspondingly increased. For example, the proportion of perforated mesh 15 in the forefoot 11 and heel 13 is greater than that in the arch 12.

[0047] It should be noted that for some shoe soles, after the support plate 1 is formed inside the sole, the support plate 1 will be partially exposed on the outside of the sole. Therefore, the position of the perforated mesh 15 of the support plate 1 can be designed and adjusted in advance so that the exposed part of the support plate 1 does not have perforated mesh 15.

[0048] The upper and / or lower surfaces of the support plate 1 are provided with one or more reinforcing ribs 17, at least one reinforcing rib 17 extends along the length of the support plate 1, and the reinforcing rib 17 may also span the forefoot portion 11 and the heel portion 13 of the support plate 1.

[0049] The addition of reinforcing ribs 17 can increase the proportion of the perforated mesh 15 while enhancing the structural strength of the support plate 1, effectively reducing the risk of the support plate 1 breaking due to long-term stress.

[0050] Support plate 1 is made of material with a density of less than 5 g / cm³ 3 It is made of lightweight metal materials, such as titanium alloy, aluminum alloy or magnesium-lithium alloy. In this embodiment, the support plate 1 is made of titanium alloy.

[0051] The support plate 1 made of titanium alloy can be obtained by die forging, extrusion or casting. However, considering the hollow mesh 15 and reinforcing ribs 17 of the support plate 1 in this embodiment, it is integrally formed by 3D printing. This production method is conducive to the rapid forming of the support plate 1, that is, the forming process is simple, thereby improving the forming quality stability of the support plate 1.

[0052] The implementation principle of Example 1 is as follows: by using a density of less than 5 g / cm³ 3 The support plate 1 is made of lightweight metal material, which gives it high strength and rigidity. Combined with the hollow mesh 15 and reinforcing ribs 17, it can not only further increase the lightweight of the support plate 1, but also improve the strength and rigidity of the support plate 1. After the support plate 1 is installed inside the sole instead of the carbon fiber plate, it can still provide support, rebound and acceleration capabilities, making it easier for runners to run while keeping the sole light and convenient for the wearer to run and exercise.

[0053] Since lightweight metal materials can be processed into shape in one step through casting, extrusion or 3D printing, the processing is simpler, that is, the forming process is simple, thereby improving the forming quality stability of the support plate 1.

[0054] Example 2

[0055] Example 2 is based on Example 1 with the following settings, as shown in Figure 3. The surface of the support plate 1 is covered with a TPU film 3. The TPU film 3 can completely cover the support plate 1 and the perforated mesh 15 thereon (see the first schematic diagram in Figure 3), or it can only cover the surface of the support plate 1, exposing the perforated mesh 15 of the support plate 1 (see the second schematic diagram in Figure 3). The TPU film 3 and the support plate 1 are combined to form a composite support plate 10.

[0056] The TPU film 3 can be a TPU hot melt adhesive film, which is bonded to the surface of the support plate 1. The shape of the TPU hot melt adhesive film can be adjusted according to the position and number of the exposed perforated mesh 15. For example, holes can be set on the TPU hot melt adhesive film, which correspond to the perforated mesh 15 of the support plate 1, to ensure that the TPU hot melt adhesive film will not cover the perforated mesh 15 of the support plate 1 after bonding.

[0057] The TPU film 3 can also be fixed to the surface of the support plate 1 using existing injection molding processes. In order to improve the molding effect of the TPU film 3, this embodiment also discloses a molding process for the composite support plate 10, which includes the following steps: after the support plate 1 is placed into the molding mold, as shown in Figures 4-6, the mold is closed. At this time, there is a molding gap between the support plate 1 and the inner wall of the mold cavity 20 of the molding mold.

[0058] TPU material is injected into the mold cavity 20, so that the TPU material fills the molding gap and the hollow mesh 15, and wraps the support plate 1. After the TPU material solidifies and forms a TPU film 3, the mold is opened to obtain the composite support plate 10, as shown in the first schematic diagram of Figure 3.

[0059] This embodiment also discloses a molding die applied to the molding process of the composite support plate 10, as shown in Figures 4-6. The molding die includes an upper die 21 and a lower die 22. The opposing surfaces of the upper die 21 and the lower die 22 fit together to form a mold cavity 20. Multiple positioning rods 23 are fixed to the opposing surfaces of the upper die 21 and the lower die 22. The upper positioning rod 23 abuts against the upper surface of the support plate 1, and the lower positioning rod 23 abuts against the lower surface of the support plate 1. This allows the support plate 1 to be suspended within the mold cavity 20, facilitating the molding of the TPU film 3 wrapped around the support plate 1. It can be understood that the virtual curved surface formed by the abutting endpoints of each positioning rod 23 in this embodiment is adapted to the surface curved surface of the support plate 1.

[0060] The positioning rods 23 can be evenly distributed or positioned at key points. For example, the positioning rods 23 can be positioned at one or more key points in the forefoot part 11, arch part 12, or heel part 13 of the support plate 1.

[0061] The implementation principle of this embodiment is: using a density less than 5g / cm³ 3The support plate 1 is made of lightweight metal material and has a hollow mesh 15. The support plate 1 also has high strength, rigidity and lightweight effect. After it is installed inside the sole instead of carbon plate, it can provide support, rebound and acceleration, making it easier for runners to run.

[0062] Furthermore, since the lightweight metal support plate 1 can be formed in one step by casting, extrusion or 3D printing, the processing is simpler, that is, the forming process is simple, thereby improving the forming quality stability of the support plate 1.

[0063] Furthermore, a composite support plate 10 is made by setting a TPU film 3 on the surface of the support plate 1. The TPU film 3 can not only serve as a protective film to reduce rusting of the support plate 1 and facilitate transportation and individual sales, but also serve as an intermediate connecting medium between the support plate 1 and the sole material, thereby greatly improving the bonding strength between the composite support plate 10 and the sole material and reducing delamination.

[0064] One-piece injection molding is easy to process and highly efficient.

[0065] For the composite support plate 10 with exposed perforated mesh 15 (TPU film 3 not covering the perforated mesh 15 of support plate 1), this embodiment also discloses a molding process and molding die corresponding to the composite support plate 10. The upper mold 21 and / or lower mold 22 are fixed with a blocking component (not shown in the figure). The blocking component can be a block structure, and its shape is adapted to the perforated mesh 15. During the mold closing process, the blocking component is inserted into the perforated mesh 15 of the support plate 1, which can assist in the positioning of the support plate 1 within the mold cavity 20. The number of blocking components can be one, multiple, or the same as the number of perforated mesh 15.

[0066] After the mold is closed, TPU material is injected. Because the blockage component is blocked in the hollow mesh 15 of the support plate 1, the TPU material cannot flow into the hollow mesh 15, but can only wrap the surface of the support plate 1 and fill the unblocked hollow mesh 15.

[0067] 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.

[0068] Because TPU film 3 has a hollow structure, it will improve the glue penetration rate when cold bonding shoe soles, thereby increasing the bonding area and reducing delamination.

[0069] Example 3

[0070] The difference between the molding process of the composite support plate 10 in Example 3 and Example 2 is that, as shown in Figure 7, the first state diagram in Figure 7 is the state before the support plate 1 is placed into the molding mold. After the support plate 1 is placed into the molding mold, the support plate 1 is positioned in the mold cavity 20 as follows, so that the support plate 1 is kept in the prestressed state in the mold cavity 20. In the prestressed state, the front end of the forefoot 11 is elastically bent upward relative to its own middle part by 0-5° (see the second state diagram in Figure 7).

[0071] The prestress state is achieved as follows: in this embodiment, the virtual curved surface formed by the abutting ends of each positioning rod 23 is the surface curved surface of the forefoot part 11 of the support plate 1 in an elastic bending state. Therefore, during the mold closing process, the mold closing pressure abuts the surface curved surface of the support plate 1 through the positioning rod 23, causing the front end of the forefoot part 11 to bend elastically upward relative to its own middle part by 0-5°.

[0072] The prestressed state can also be achieved as follows: the positions of the positioning rods 23 relative to the upper mold 21 and the lower mold 22 are adjustable. After the mold is closed, the support plate 1 is in a positioning state. At this time, the height position of the corresponding positioning rods 23 of the forefoot 11 is adjusted so that the front end of the forefoot 11 is elastically bent upward by 0-5° compared to its middle part. That is, after the mold is closed, the support plate 1 is changed to a prestressed state.

[0073] After the support plate 1 is in a prestressed state, 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 composite support plate 10 is obtained. The mold is opened, and the prestressed state of the support plate 1 is released (see the third state diagram in Figure 7).

[0074] The implementation principle of Example 3 is as follows: TPU material is injected into the mold cavity 20 to wrap the support plate 1 in the prestressed state, and the TPU film 3 is formed. In the molded mold in the closed state, there is no stretching or compression. After the molded mold is opened, the upper mold 21 and the lower mold 22 have no clamping force on the composite support plate 10. The composite support plate 10 restores its elastic deformation and releases the prestressed state. At this time, the TPU film 3 on the upper surface of the composite support plate 10 is slightly stretched, while the TPU film 3 on the lower surface of the composite support plate 10 is slightly compressed, that is, the TPU film 3 is in the prestressed state.

[0075] During use, such as jumping or running, the forefoot of the composite support plate 10 undergoes significant bending, causing the TPU film 3 on the upper surface of the composite support plate 10 to change from slight stretching to compression, and the TPU film 3 on the lower surface of the composite support plate 10 to change from slight compression to stretching. Therefore, compared to the composite support plate 10 in a non-stressed state, the TPU film 3 of this composite support plate 10 exhibits less compression or stretching deformation, thus preventing excessive compression or stretching deformation of the TPU film 3, which could lead to fatigue failure or tearing damage.

[0076] Furthermore, the TPU film 3, which serves as the intermediate connecting medium between the support plate 1 and the sole material, has a relatively small degree of compression or stretching deformation. This reduces the occurrence of delamination from the sole material due to excessive deformation and tearing of the TPU film 3, thereby improving the service life of the sole.

[0077] Example 4

[0078] The difference between Example 4 and Example 3 is that, as shown in Figure 8, after the TPU film 3 is formed, the composite support plate 10 is removed from the mold. At this time, the composite support plate 10 is released from its prestress state due to the loss of the positioning rod 23, that is, the composite support plate 10 resumes its deformation. The TPU film 3 on the upper surface of the composite support plate 10 is slightly stretched, and the TPU film 3 on the lower surface of the composite support plate 10 is slightly compressed, that is, the TPU film 3 is in a prestress state. At this time, a slit is cut on the surface of the TPU film 3. The length direction of the slit 30 corresponds to the length direction of the rib 16, and the depth of the slit 30 is two-thirds of the thickness of the TPU film 3.

[0079] You can use a utility knife to cut seams on the surface of the TPU film 3, or you can use a robotic arm to cut seams automatically, or you can use a cutting mold to cut seams in one go.

[0080] The implementation principle of this embodiment is as follows: When the TPU film 3 of the composite support plate 10 is under prestress, a slit is made along the length direction of the rib 16. This can eliminate part of the prestress of the TPU film 3 on the upper surface of the composite support plate 10, thereby greatly increasing the compressibility of the TPU film 3 in this part. At the same time, it also increases the degree of micro-compression of the TPU film 3 on the lower surface of the composite support plate 10, so as to greatly improve the stretchability of the TPU film 3 in this part. This makes the degree of compression or stretching deformation of the TPU film 3 of the composite support plate 10 smaller than that of the TPU film 3 of the composite support plate 10 without prestress, thereby reducing the occurrence of fatigue failure or deformation tearing damage of the TPU film 3 due to excessive compression or stretching deformation.

[0081] Secondly, by setting the cutting seam 30, the glue can easily penetrate into the cutting seam 30 during the cold bonding process of the shoe sole, thereby increasing the bonding area and bonding strength between the composite support plate 10 and the shoe sole material, and thus reducing delamination.

[0082] Furthermore, since the cut slit 30 has a certain depth, the adhesive penetrates into the cut slit 30 and solidifies. The TPU film 3 is bonded and cured at the part of the cut slit 30 relative to the inner wall. This bonded and cured part forms a three-dimensional soft skeleton, which can increase the structural strength of the TPU film 3 and make the deformation of the TPU film 3 smaller. This reduces the possibility of excessive compression or stretching deformation of the TPU film 3, which could lead to fatigue failure or tearing damage.

[0083] Example 5

[0084] Example 5 discloses a shoe sole having a support plate 1 or composite support plate 10 as described in any one of Examples 1-4, comprising a metal support plate for shoes and a shoe sole body. The support plate 1 or composite support plate 10 is located between the midsole 51 and the outsole 52 of the shoe sole body or on top of the midsole 51 of the shoe sole body. As shown in Figure 9, in this embodiment, the support plate 1 or composite support plate 10 is located between the midsole 51 and the outsole 52.

[0085] Example 6

[0086] Example 6 discloses the shoe sole manufacturing process of Example 5, including the following steps: using an adhesive bonding method to...

[0087] In any of the embodiments 1-4, the support plate 1 or composite support plate 10 is fixed inside the sole, such that the support plate 1 is located between the midsole 51 and the outsole 52 or on top of the midsole 51, so as to form the sole.

[0088] Example 7

[0089] Example 7 discloses the shoe sole manufacturing process of Example 5, including the following steps: placing the support plate 1 or composite support plate 10 of any one of Examples 1-4 into an injection mold, injecting shoe sole liquid into the injection mold, and the shoe sole liquid contacting and connecting with the support plate 1 or composite support plate 10 to form the shoe sole.

[0090] While placing the support plate 1 or composite support plate 10 into the injection mold, a functional base plate, such as a rubber sheet, can also be placed into the injection mold. This functional base plate combines with the sole material to become part of the sole, thereby providing functionality to the sole.

[0091] The above-mentioned injection mold can be a conventional shoe sole injection mold.

[0092] Example 8

[0093] Example 8 discloses an injection mold for use with the shoe sole manufacturing process of Example 7, as shown in Figures 10-12. It includes a lower mold base 31 and an upper mold base 32 that covers the lower mold base 31. The lower mold base 31 and the upper mold base 32 are locked together by bolts. The inner cavities of the lower mold base 31 and the upper mold base 32 form a molding cavity. The lower mold base 31 / upper mold base 32 has a first injection hole (not shown in the figure).

[0094] A mounting bracket 33 is fixedly connected to the lower end face of the lower mold base 31. A lifting plate 311 located below the lower mold base 31 is vertically slidably connected to the mounting bracket 33. Multiple lifting plates 311 are provided. The mounting bracket 33 is provided with a lifting drive component to drive the lifting plates 311 to slide. In this embodiment, the lifting drive component is a rodless cylinder 312, with its cylinder body fixedly connected to the mounting bracket 33 and its lifting end fixedly connected to the lifting plate 311. The lifting plate 311 is provided with a positioning post 34 that slides through the bottom wall of the lower mold base 31. In this embodiment, the lower end of the positioning post 34 is fixedly connected to the upper end face of the lifting plate 311, and the bottom wall of the lower mold base 31 has a through hole 313 for the positioning post 34 to pass through.

[0095] The positioning post 34 has a mounting cavity, and a fixed injection tube 341 is built into the mounting cavity. The upper part of the fixed injection tube 341 is fixedly inserted through the upper end face of the positioning post 34, and the upper end of the fixed injection tube 341 is a second injection hole. A positioning blind hole 35 is opened on the lower end face of the support plate 1, and the upper end of the fixed injection tube 341 is inserted into the positioning blind hole 35. A cutter 342 is protruding from the outer wall of the positioning post 34. In this embodiment, the cutter 342 is radially slidably connected to the positioning post 34. Specifically, a knife groove 343 communicating with the mounting cavity is opened radially on the outer peripheral wall of the positioning post 34. Multiple knife grooves 343 are provided and distributed around the axis of the positioning post 34, and the cutter 342 is radially slidably connected to the knife groove 343.

[0096] The positioning post 34 is equipped with an adjustment mechanism 36 for adjusting the sliding position of the cutter 342. The adjustment mechanism 36 includes a movable injection tube 361 placed in the mounting cavity and slidably connected to the positioning post 34 along the axial direction, a hinge rod 362 with one end hinged to the cutter 342 and the other end hinged to the outer wall of the movable injection tube 361, and an injection tube drive assembly 363 for driving the movable injection tube 361 to slide. The upper part of the movable injection tube 361 is slidably sleeved on the lower part of the fixed injection tube 341, and the lower part of the movable injection tube 361 slides through the lifting plate 311. The lower end of the movable injection tube 361 is externally connected to an injection device (not shown in the figure). In this embodiment, the lower outer wall of the positioning post 34 is axially provided with a sliding groove 344 that communicates with the mounting cavity and is located below the lower mold base 31. The sliding groove 344 is located above the lifting plate 311. The injection tube drive assembly 363 includes a first slide plate 3631 fixedly connected to the outer wall of the movable injection tube 361 and sliding through the sliding groove 344, and an injection tube cylinder 3632 whose cylinder body is fixedly connected to the upper end face of the lifting plate 311. The piston rod of the injection tube cylinder 3632 is fixedly connected to the lower end face of the first slide plate 3631.

[0097] A bracket 37 is fixedly connected to the upper end face of the upper mold base 32. The bracket 37 is provided with a limiting rod 371 that slides through the top wall of the upper mold base 32. The upper part of the limiting rod 371 has a threaded section that is threaded through the bracket 37. The lower part of the limiting rod 371 is a smooth rod that passes through the top wall of the upper mold base 32. The lower end of the limiting rod 371 abuts against the upper end face of the support plate 1. A rotating rod 372 is fixedly connected to the upper end of the limiting rod 371.

[0098] The molding method for manufacturing shoe soles using the injection mold of this embodiment includes the following steps:

[0099] Step S1: Clean the prepared support plate 1. The rodless cylinder 312 drives the lifting plate 311 to move upward, so that the positioning post 34 slides through the bottom wall of the lower mold base 31 and extends into the molding cavity. The piston rod of the injection cylinder 3632 extends, causing the movable injection tube 361 to move upward relative to the positioning post 34. Thus, the cutting blade 342 is pushed to slide out of the cutting groove 343 through the hinge rod 362, so that the cutting edge of the cutting blade 342 protrudes from the outer peripheral wall of the positioning post 34. The release agent is then applied to the inner walls of the lower mold base 31 and the upper mold base 32.

[0100] Step S2: Align the positioning blind hole 35 of the support plate 1 with the fixed injection tube 341, so that the upper end of the fixed injection tube 341 is inserted into the positioning blind hole 35 to support the support plate 1.

[0101] Step S3: Close the upper mold base 32, lock the lower mold base 31 and the upper mold base 32 with bolts, and rotate the rotating rod 372 to drive the limiting rod 371 to rotate. The limiting rod 371 moves down under the restriction of the thread, so that the lower end of the limiting rod 371 abuts against the upper end surface of the support plate 1.

[0102] Step S4: Inject shoe sole material into the molding cavity through the first injection hole. After the shoe sole is molded and solidified, the rodless cylinder 312 drives the lifting plate 311 to move down, causing the positioning post 34 to descend. During the downward movement of the positioning post 34, the cutter 342 scratches the inner wall of the positioning hole formed by the positioning post 34, thereby improving the roughness of the inner wall of the positioning hole. Molding filler is injected into the positioning hole formed by the positioning post 34 through the second injection hole to seal the positioning hole. When the positioning post 34 is about to come off the shoe sole, the piston rod of the injection cylinder 3632 retracts, causing the movable injection tube 361 to move down relative to the positioning post 34. The cutter 342 is pulled by the hinge rod 362 to be stored in the cutter groove 343, preventing the lower end of the scratch from extending out of the lower end surface of the shoe sole, and making it easier for the positioning post 34 to retract into the perforation 313. In this embodiment, the sole material is made of low-density polyethylene (melting point 110℃-120℃), and the molding filler is a low-melting-point polyolefin elastomer (melting point 50℃-70℃).

[0103] Step S5: Demolding.

[0104] Example 9

[0105] Example 9 discloses a shoe, including an upper 6 and a sole as described in Example 5.

[0106] Example 10

[0107] Example 10 discloses a metal support plate structure for shoes, used in shoe uppers 6 to improve the functionality of shoe uppers 6. As shown in Figures 13 and 14, the metal support plate structure for shoes includes a support plate 1. There can be one or two support plates 1. A single support plate 1 can be set at the toe or heel of the shoe upper 6, and two support plates 1 can be set at the toe and heel of the shoe upper 6, respectively.

[0108] In this embodiment, two support plates 1 are provided, which are semi-enclosed to adapt to the shape of the toe and the heel of the upper 6, respectively. The upper edge of the support plate 1 located at the toe extends to the toe surface of the upper 6, and the end of the support plate 1 near the inner side of the toe is shorter than the end of the support plate 1 near the outer side of the toe, so as to fit the foot.

[0109] The support plate 1 located at the heel extends to both sides of the shoe upper 6 at the heel. Specifically, the support plate 1 includes a first part 62 in the middle and second parts 63 disposed on both sides of the first part 62. The height of the upper edge of the first part 62 is higher than that of the upper edge of the second part 63. The height of the upper edge of the first part 62 gradually decreases from the middle to both ends. The two ends of the first part 62 slope towards the second part 63, and the angle of this slope is greater than the angle at which the height of the first part 62 gradually decreases, making it relatively steep. The height of the second part 63 gradually decreases away from the first part 62 at its upper edge, and the end face of the second part 63 is inclined towards the first part 62.

[0110] The lower edge of the support plate 1 may also be provided with several deformation notches 64 evenly spaced along its own extension direction.

[0111] The surface of the support plate 1 is provided with perforated mesh 15 to achieve a lightweight design of the support plate 1. The perforated mesh 15 can be round, square, rhomboid, or regular polygonal, depending on the requirements. In this embodiment, it is a regular hexagonal with a honeycomb pattern.

[0112] The perforated mesh 15 can be a through hole or a blind hole.

[0113] The aperture of the perforated mesh 15 can be reduced accordingly based on the stress conditions during actual use. The perforated mesh 15 accounts for 50% to 90% of the support plate 1. The design of the perforated mesh 15 can be increased as much as possible to reduce the weight of the support plate 1, while ensuring that the support plate 1 will not break.

[0114] To further improve the strength of the support plate 1, a reinforcing rib 17 can be provided on the surface of the support plate 1. The reinforcing rib 17 is integrally formed with the support plate 1. The reinforcing rib 17 can be provided on the outer surface and / or inner surface of the support plate 1, and the number of reinforcing ribs 17 can be one or more.

[0115] Reinforcing ribs 17 can also be set within the perforated mesh 15. Several reinforcing ribs 17 can be set within one perforated mesh 15, the number of which is determined according to requirements. These reinforcing ribs 17 are arranged in a staggered pattern. It should be noted that the reinforcing ribs 17 can be set parallel to the side length of the perforated mesh 15 or at an angle. When the number of reinforcing ribs 17 within the perforated mesh 15 is small, the length directions of the reinforcing ribs 17 located within adjacent perforated mesh 15 can also be staggered.

[0116] Support plate 1 is made of material with a density of less than 5 g / cm³ 3 It is made of lightweight metal materials, such as titanium alloy, aluminum alloy or magnesium-lithium alloy; specifically in this embodiment, the support plate 1 is made of titanium alloy material.

[0117] The support plate 1, made of titanium alloy, can be obtained by die forging, extrusion or casting. However, considering the structure of the hollow mesh 15 and the setting of the reinforcing ribs 17 of the support plate 1 in this embodiment, it is integrally formed by 3D printing. This production method is conducive to the rapid forming of the support plate 1, that is, the forming process is simple, thereby improving the forming quality stability of the support plate 1.

[0118] A protective layer, which can be a TPU film 3, can also be provided on the outer surface of the support plate 1. The thickness of the protective layer can be set according to the requirements to increase the waterproofness and corrosion and oxidation resistance of the support plate 1 and thus improve its service life. In order to prevent the support plate 1 from colliding with hard objects and injuring the feet, an elastic layer is provided on the inner surface of the support plate 1. The elastic layer can be elastic foam.

[0119] This embodiment also discloses a shoe, as shown in Figure 15, including a sole and an upper 6. The aforementioned support plate 1 is disposed at the toe and heel of the upper 6. The support plate 1 can be disposed in the interlayer of the upper 6, or it can be disposed on the outside of the upper 6, or it can be disposed on the inside of the upper 6, depending on the requirements. In this embodiment, the support plate 1 is disposed on the outside of the upper 6.

[0120] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A metal support plate for shoes, characterized in that: Includes a support plate (1), the support plate (1) being made of materials with a density of less than 5 g / cm³. 3 The support plate (1) is made of lightweight metal material and has a perforated mesh (15) arranged on it. The perforated mesh (15) of the support plate (1) accounts for 50% to 90%.

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

3. The metal support plate for shoes according to claim 1, characterized in that: The surface of the support plate (1) is covered with a TPU film (3).

4. The metal support plate for shoes according to claim 1, characterized in that: The surface of the support plate (1) is provided with reinforcing ribs (17), and at least one reinforcing rib (17) extends along the length of the support plate (1).

5. A shoe sole, characterized in that: It includes the sole body and the metal support plate for shoes as described in any one of claims 1-4.

6. The sole according to claim 5, characterized in that: The support plate (1) is located between the midsole (51) and the outsole (52) of the sole body or on the midsole (51) of the sole body.

7. A shoe, characterized in that: Includes the sole and upper as described in claim 5 (6).

8. The shoe according to claim 7, characterized in that: The support plate (1) is located between the midsole (51) and the outsole (52) of the sole body or on the midsole (51) of the sole body.

9. The shoe according to claim 7, characterized in that: The support plate (1) is disposed at the toe of the upper (6) and / or at the heel of the upper (6).

10. A manufacturing process for a shoe sole according to claim 6, characterized in that: The process includes either a one-piece molding process or an adhesive bonding process. In the one-piece molding process, the support plate (1) is placed into an injection mold, and shoe sole liquid is injected into the injection mold. The shoe sole liquid contacts and connects with the support plate (1) to form the shoe sole. In the adhesive bonding process, the support plate (1) is bonded to the midsole (51) of the shoe sole body and the outsole (52) of the shoe sole body or to the midsole (51) of the shoe sole body by brushing glue.

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