A 3D additive shoe sole mold and manufacturing process

Abstract

The present application relates to a 3D additive shoe sole mold and manufacturing process, and belongs to the field of 3D printing manufacturing technology. The 3D additive shoe sole mold includes a surface insert, a support body and a nested component; the surface insert includes a first molding surface, and the first molding surface and the second molding surface of the upper mold form a molding cavity for molding the sole; the support body has a support surface and a first parting surface, and the support surface is used to support the surface insert, and the first parting surface fits with the second parting surface of the upper mold for mold closing, and the support surface is provided with a plurality of first pores, and the first pores are connected to the first parting surface; the nested component is used to connect the surface insert and the support body; wherein, the surface insert is provided with a plurality of second pores, and the second pores are connected to the first pores, and the plurality of second pores correspond to the plurality of first pores one by one, and the support body is composed of a plurality of support segments. The 3D additive shoe sole mold provided in the embodiment of the present application can improve the quality of the manufactured products.

Description

Technical Field

[0001] The present application relates to the field of 3D printing manufacturing technology, and more specifically, to a 3D additive shoe sole mold and manufacturing process. Background Art

[0002] 3D additive manufacturing, also known as 3D printing, is a manufacturing technology that adds materials layer by layer according to a digital model to create a three-dimensional object. This technology can produce complex structures and fine parts and is widely used in aerospace, medical, automotive, construction and other fields. 3D printing can be used to manufacture molds with complex internal structures.

[0003] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. When using existing molds to produce multi-layer soles, the single-layer sole that has been formed is placed in the lower mold, and then the molds are closed, and the material of another layer of sole is injected between the single-layer sole that has been formed and the molding surface of the upper mold, and finally a multi-layer sole is obtained. In the process of placing the single-layer sole that has been formed into the lower mold, there may be air between the sole and the molding surface of the lower mold, resulting in a gap between the sole and the lower mold, which in turn causes the final multi-layer sole to have obvious local insufficient thickness, affecting the quality of the product. Summary of the invention

[0004] The purpose of this application is to provide a 3D additive undersole mold and manufacturing process to address the above-mentioned problems, which can improve the quality of manufactured products and improve the above-mentioned problems.

[0005] This application is achieved through the following technical solutions:

[0006] In the first aspect, the present application provides a 3D additive sole lower mold, which can be molded with an upper mold to manufacture a multi-layer sole. A 3D additive sole lower mold includes a surface insert, a support body and a nested component; the surface insert includes a first molding surface, and the first molding surface and the second molding surface of the upper mold form a molding cavity for molding the sole; the support body has a supporting surface and a first parting surface, and the supporting surface is used to support the surface insert, and the first parting surface is fitted with the second parting surface of the upper mold for mold closing, and the supporting surface is provided with a plurality of first air holes, and the first air holes are connected to the first parting surface; the nested component is used to connect the surface insert and the support body; wherein, the surface insert is provided with a plurality of second air holes, the second air holes are connected to the first air holes, and the plurality of second air holes correspond one-to-one to the plurality of first air holes, and the support body is spliced ​​by a plurality of support segments.

[0007] In the technical solution of the embodiment of the present application, a 3D additive sole lower mold comprises a surface insert, a support body and a nesting component; the support surface is provided with a plurality of first air holes, the first air holes are connected to the first parting surface, and when a single-layer sole is placed in the 3D additive sole lower mold, the air between the sole and the first molding surface can be discharged through the second air holes and the first air holes, so that the single-layer sole can be completely fitted with the first molding surface; the nesting component is used to connect the surface insert and the support body so that the surface insert and the support body can be in close contact; wherein the surface insert is provided with a plurality of first air holes, the first air holes are connected to the first parting surface, and the air between the sole and the first molding surface can be discharged through the second air holes and the first air holes, so that the single-layer sole can be completely fitted with the first molding surface; the nesting component is used to connect the surface insert and the support body so that the surface insert and the support body can be in close contact; wherein, ... and the single-layer sole can be completely fitted with the first molding surface; the nesting component is used to connect the surface insert and the support body so that the surface insert and the support body can be in close contact with each other; wherein, the surface insert is provided with a plurality of first air holes, the first air holes are connected to the first parting surface, and the air between the sole and the first molding surface can be discharged through the second air holes and the first air holes, and the air between the sole and The plurality of second pores are connected to the first pores, and the plurality of second pores correspond to the plurality of first pores one by one, so that the air between the single-layer sole and the first molding surface can enter the first pores through the second pores and then be discharged. Since 3D printing is to construct objects layer by layer, the higher the height of the object, the longer the printing time is required. In order to reduce the amount of support material required when constructing the first pores during printing, the support body needs to be erected (that is, the length direction of the support body is perpendicular to the top surface of the 3D printed substrate). The support body is composed of a plurality of support The 3D printing substrate is composed of several support segments, and multiple support segments can be placed on the 3D printing substrate for printing at the same time, so that the height of the object to be printed by the 3D printing device is small, saving the time required for printing the support body; in actual use of the 3D additive sole lower mold provided by the present application, a single-layer sole is placed in the 3D additive sole lower mold, and the air between the single-layer sole and the first molding surface enters the first air hole through the second air hole, and then flows from the first air hole to the first parting surface and is discharged, so that the single-layer sole is completely fitted with the first molding surface; the 3D additive sole lower mold and The upper mold is closed, and the constituent material of another layer of the sole is injected between the single-layer sole and the second molding surface of the upper mold, the first parting surface is fitted with the second parting surface, and the second parting surface blocks the first air hole, so as to prevent the portion of the single-layer sole facing the second air hole from being squeezed into the second air hole and deformed under the action of the internal pressure of the molding cavity; during the processing of the product, the shape of the product will not be affected by the air between the single-layer sole and the first molding surface, and the shape and thickness of the product at various locations can achieve ideal quality, reduce the scrap rate of the product, and improve the quality of the product.

[0008] In some embodiments, a plurality of air collecting holes are further provided inside the support body, the first molding surface is located at the center of the first parting surface, both ends of the air collecting hole extend to the first parting surface located on both sides of the first molding surface respectively, and the plurality of air collecting holes are arranged along the length direction of the support body, the first air holes connect the air collecting holes, and each air collecting hole is connected to at least one first air hole.

[0009] In the technical solution of the embodiment of the present application, a plurality of air collecting holes are further arranged inside the support body, the first molding surface is located at the center of the first parting surface, and the two ends of the air collecting hole extend to the first parting surfaces located on both sides of the first molding surface respectively, so that the openings of the air collecting holes on the first parting surfaces at both ends of the first molding surface can discharge air, thereby accelerating the speed at which the air between the single-layer sole and the first molding surface is discharged, so that the spacing distance between each first air hole and the opening of the air collecting hole on the first parting surface is not too far, thereby reducing the high internal pressure at the first air hole caused by the long distance between the first air hole and the opening of the collecting hole, and reducing the risk of the portion of the single-layer sole facing the first air hole and the first molding surface being lifted up due to air pressure to form a cavity, and the plurality of air collecting holes are arranged along the length direction of the support body, the first air holes are connected to the air collecting holes, each air collecting hole is connected to no less than one first air hole, and each air collecting hole can correspond to the exhaust requirements of multiple first air holes, so that the number of required air collecting holes is small, the number of pore structures inside the support body is reduced, and the proportion of the solid part inside the support body is increased, thereby improving the strength of the support body.

[0010] In some embodiments, the surface inlay comprises a plurality of raised portions and a plurality of recessed portions adapted to the pattern of the sole, each raised portion is provided with at least one second air hole, and each recessed portion is provided with at least one second air hole.

[0011] In the technical solution of the embodiment of the present application, the surface insert includes a plurality of raised portions and a plurality of recessed portions adapted to the pattern of the sole, each raised portion is provided with at least one second air hole, and each recessed portion is provided with at least one second air hole, so that any air that may exist between each raised portion and each recessed portion can be discharged through the second air hole. When the 3D additive sole lower mold provided in the present application is used to process products with more complex patterns, the first molding surface can also fit the product, so that the quality of the processed products is higher and more stable.

[0012] In some embodiments, the support segment is wedge-shaped, and the slopes of every two support segments among the multiple support segments spliced ​​together to form the support body fit together.

[0013] In the technical solution of the embodiment of the present application, the support segment is wedge-shaped, and the slopes of every two support segments among the multiple support segments spliced ​​to form the support body are fitted together, so that two adjacent support segments can align and fit together by themselves under the guidance of gravity and the slope, thereby reducing the difficulty of splicing the support segments.

[0014] In some embodiments, a supporting mesh is disposed in the second air hole.

[0015] In the technical solution of the embodiment of the present application, a support net is arranged in the second air hole. On the one hand, when a single-layer sole is injection molded, the dense support net can prevent the molding liquid from entering the second air hole; on the other hand, when a multi-layer sole is manufactured, the support net can prevent the single-layer sole from deforming toward the second air hole, thereby improving the appearance quality of the product.

[0016] In some embodiments, the nested component includes an anchor bolt, the surface insert is provided with a through hole for the anchor bolt to pass through, the surface insert is connected to the support body through the anchor bolt, the number of nested components is multiple, and each support segment is connected to the surface insert through at least one anchor bolt.

[0017] In the technical solution of the embodiment of the present application, the surface insert is connected to the support body through anchor bolts, so that the surface insert and the support body have good connection stability. The number of nested components is multiple, and each support segment is connected to the surface insert through at least one anchor bolt. The support segment is fixed to the surface insert by the anchor bolt to achieve fixation of the relative position with other support segments.

[0018] In some embodiments, the surface of the anchor bolt facing the molding cavity is flush with the first molding surface.

[0019] In the technical solution of the embodiment of the present application, the surface of the anchor bolt facing the molding cavity is flush with the first molding surface, so that the shape of the processed product will not be affected by the anchor bolt, thereby improving the stability of the product's appearance quality.

[0020] In some embodiments, the nested component also includes a support member, which is provided with a through hole for the anchor bolt to pass through. The support member is located on the side of the surface insert close to the support body. The support member is a conical structure. The top surface of the support member abuts against the surface insert, and the curved surface of the support member abuts against the support body.

[0021] In the technical solution of the embodiment of the present application, the support member is provided with a through hole for the anchor bolt to pass through. The support member is located on the side of the surface insert close to the support body. The support member is a conical structure. The top surface of the support member abuts against the surface insert. When the anchor bolt pulls the surface insert toward the supporting surface, the bottom surface of the support member can provide a supporting surface for the part of the surface insert pulled by the anchor bolt, thereby reducing the risk of deformation of the part of the surface insert close to the anchor bolt under the pull of the anchor bolt, and reducing the risk of local deformation of the first molding surface affecting the appearance quality of the product.

[0022] In some embodiments, the support body is provided with a plurality of mounting grooves, the inner walls of the mounting grooves are fitted and abutted against the curved surface of the support member, and the plurality of mounting grooves correspond one-to-one to the support members of the plurality of nested components.

[0023] In the technical solution of the embodiment of the present application, the support body is provided with a plurality of installation grooves, the inner walls of the installation grooves are fitted and abutted against the curved surface of the support member, and the installation grooves are installation spaces reserved for the support member, thereby reducing the risk of irregular deformation of the support body under the extrusion of the support member, which may push the surface insert to deform.

[0024] In the second aspect, the present application provides a 3D additive undersole mold manufacturing process, which is used to produce the 3D additive undersole mold of the first aspect, and the manufacturing process includes the following steps: Step S100: obtaining multiple support segments by 3D printing; Step S200: splicing multiple support segments to obtain a support body; Step S300: making a surface insert; Step S400: providing a nesting component, and using the nesting component to install the surface insert on the support body; Step S500: performing cavity surface processing on the first molding surface of the surface insert.

[0025] In the technical solution of the embodiment of the present application, in step S100, multiple support segments are printed in parallel through 3D printing, so that the production of multiple support segments can be completed in a shorter time, thereby accelerating the production rate of the 3D additive under-sole mold; in step S300, a surface insert with a relatively smooth first molding surface is manufactured by die-casting, forging, stamping, etc., and then the surface insert is placed on the support surface of the support body, and the relatively rough surface of the support body formed by 3D printing is covered with the relatively smooth first molding surface; in step S400, multiple support segments are fixedly connected to the surface insert through nested components to improve the integrity of the support body; in step S500, the first molding surface of the surface insert is subjected to cavity surface processing so that the first molding surface can meet the requirements of the processing mold, thereby obtaining a 3D additive under-sole mold capable of producing multi-layer soles.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A top view of a mold provided for some embodiments of the present application;

[0029] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0030] Figure 3 for Figure 1 Sectional view at the middle BB;

[0031] Figure 4 A top view of a 3D additive undersole mold provided for some embodiments of the present application;

[0032] Figure 5 A side view of a 3D additive undersole mold provided for some embodiments of the present application;

[0033] Figure 6 An exploded view of a 3D additive undersole mold provided for some embodiments of the present application;

[0034] Figure 7 An exploded view of a 3D additive undersole mold provided for some other embodiments of the present application;

[0035] Figure 8 A cross-sectional view of a surface insert provided for some embodiments of the present application;

[0036] Fig. 9 A flow chart of a 3D additive undersole mold manufacturing process provided for some embodiments of the present application.

[0037] Icons: 1-upper mold; 10-molding cavity; 11-second molding surface; 12-second parting surface; 2-3D additive sole lower mold; 20-surface insert; 200-first molding surface; 201-second air hole; 21-support body; 210-support surface; 2100-first air hole; 211-first parting surface; 212-support section; 213-air collecting hole; 214-installation slot; 22-nested component; 220-anchor bolt; 221-support member. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0040] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0041] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0043] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0044] According to some embodiments of the present application, optionally, Figures 1 to 8 As shown, the present application provides a 3D additive sole lower mold 2, which can be molded with an upper mold 1 to manufacture a multi-layer sole. The 3D additive sole lower mold 2 includes a surface insert 20, a support body 21 and a nesting component 22; the surface insert 20 includes a first molding surface 200, and the first molding surface 200 and the second molding surface 11 of the upper mold 1 form a molding cavity 10 for molding the sole; the support body 21 has a support surface 210 and a first parting surface 211, the support surface 210 is used to support the surface insert 20, and the first parting surface 211 is used to support the surface insert 20. The molding surface 211 is fitted with the second parting surface 12 of the upper mold 1 to close the mold, and the supporting surface 210 is provided with a plurality of first air holes 2100, and the first air holes 2100 are connected to the first parting surface 211; the nesting component 22 is used to connect the surface insert 20 and the support body 21; wherein, the surface insert 20 is provided with a plurality of second air holes 201, and the second air holes 201 are connected with the first air holes 2100, and the plurality of second air holes 201 correspond one by one to the plurality of first air holes 2100, and the support body 21 is spliced ​​by a plurality of support segments 212.

[0045] The surface insert 20, the support body 21 and the nesting component 22 are all made of metal.

[0046] The surface insert 20 may be formed by calendaring.

[0047] Calendering is an important basic process in polymer material processing. During the calendering process, the material passes through the gap between a series of horizontal rollers rotating in opposite directions, and is squeezed and stretched to form a thin sheet product with a certain thickness, width and surface finish.

[0048] The product referred to in this application is a multi-layer sole manufactured by a mold.

[0049] The support surface 210 is completely in contact with the surface insert 20 .

[0050] The parting surface is an important concept in mold design. It refers to the part where the movable mold and the fixed mold of the mold can contact when they are in the closed state.

[0051] The 3D additive shoe sole lower mold 2 provided in the present application is a static mold of the mold, and the upper mold 1 is a dynamic mold of the mold.

[0052] The working principle of 3D printing is similar to building a house, that is, "layered manufacturing, layer by layer". First, a digital model is created or obtained through computer-aided design software, and then the model is cut into a series of very thin cross-sectional layers. Then, the 3D printer builds the final object layer by layer based on these slice information through specific technologies and materials.

[0053] During 3D printing, a processing allowance of 1 to 2 mm may be reserved on the joint surface of the support segment 212 .

[0054] A 3D additive sole lower mold 2 comprises a surface insert 20, a support body 21 and a nesting component 22; the support surface 210 is provided with a plurality of first air holes 2100, the first air holes 2100 are connected to the first parting surface 211, and in the process of placing a single-layer sole into the 3D additive sole lower mold 2, the air between the sole and the first molding surface 200 can be discharged through the second air holes 201 and the first air holes 2100, so that the single-layer sole can be completely fitted with the first molding surface 200; the nesting component 22 is used to connect the surface insert 20 and the support body 21, so that the surface insert 20 and the support body 21 can be tightly attached, the surface insert 20 has a smooth first molding surface 200, and the process of processing the relatively rough surface of the support body 21 can be omitted; wherein the surface insert 20 is provided with a plurality of second air holes 201, the second air holes 20 1 is connected to the first air hole 2100, and the plurality of second air holes 201 correspond to the plurality of first air holes 2100 one by one, so that the air between the single-layer sole and the first molding surface 200 can enter the first air holes 2100 through the second air holes 201 and then be discharged. Since 3D printing is to construct objects layer by layer, the higher the height of the object, the longer the time required for printing. When printing, in order to reduce the amount of supporting materials required when constructing the first air holes 2100, the support body 21 needs to be erected (that is, the length direction of the support body 21 is perpendicular to the top surface of the 3D printed substrate). The support body 21 is spliced ​​by a plurality of support segments 212, and the plurality of support segments 212 can be placed on the 3D printed substrate at the same time for printing, so that the height of the object required to be printed by the 3D printing device is smaller, saving the time required for printing the support body 21;

[0055] During actual use of the 3D additive sole lower mold 2 provided in the present application, a single-layer sole is placed in the 3D additive sole lower mold 2, and the air between the single-layer sole and the first molding surface 200 enters the first air hole 2100 through the second air hole 201, and then flows from the first air hole 2100 to the first parting surface 211 and is discharged, so that the single-layer sole is completely fitted with the first molding surface 200; the 3D additive sole lower mold 2 is molded together with the upper mold 1, and another layer of sole constituent material is injected between the single-layer sole and the second molding surface 11 of the upper mold 1, and the first parting surface 211 It fits with the second parting surface 12, and the second parting surface 12 blocks the first air hole 2100, so as to prevent the part of the single-layer sole facing the second air hole 201 from being squeezed into the second air hole 201 and deformed under the action of the internal pressure of the molding cavity 10 (the single-layer sole itself has a certain hardness, and the aperture of the second air hole 201 is relatively small); during the processing of the product, the shape of the product will not be affected by the air between the single-layer sole and the first molding surface 200, and the shape and thickness of the product at various locations can achieve ideal quality, thereby reducing the scrap rate of the product and improving the quality of the product.

[0056] According to some embodiments of the present application, optionally, Figure 3 , Figure 4 and Figure 6 As shown, a plurality of air collecting holes 213 are further provided inside the support body 21, the first molding surface 200 is located at the center of the first parting surface 211, and both ends of the air collecting hole 213 extend to the first parting surface 211 located on both sides of the first molding surface 200, respectively. The plurality of air collecting holes 213 are arranged along the length direction of the support body 21, the first air holes 2100 are connected to the air collecting holes 213, and each air collecting hole 213 is connected to at least one first air hole 2100.

[0057] Multiple air collecting holes 213 can be connected so that the air in the air collecting hole 213 with a larger amount of air can flow to other air collecting holes 213 and then be discharged, avoiding the situation where too much air in a certain air collecting hole 213 cannot be discharged in time, resulting in part of the air being retained between the single-layer sole and the first molding surface 200, affecting the analysis of the appearance quality of the manufactured product.

[0058] The aperture of the gas collecting hole 213 may be larger than the aperture of the first gas hole 2100 , so that the gas entering the gas collecting hole 213 through the first gas hole 2100 can smoothly flow to the first parting surface 211 and be discharged.

[0059] A plurality of air collecting holes 213 are also provided inside the support body 21. The first molding surface 200 is located at the center of the first parting surface 211. Both ends of the air collecting hole 213 extend to the first parting surfaces 211 located on both sides of the first molding surface 200, respectively, so that the openings of the air collecting holes 213 located on the first parting surfaces 211 at both ends of the first molding surface 200 can discharge air, thereby accelerating the speed at which air between the single-layer sole and the first molding surface 200 is discharged, so that the spacing between each first air hole 2100 and the opening of the air collecting hole 213 on the first parting surface 211 is not too far, so that the gas entering the first air hole 2100 can enter the air collecting hole 213 faster and is not easily stored in the first air hole 2100 in large quantities, and the internal air pressure of the first air hole 2100 is not easily increased. To reduce the risk of high internal pressure at the first air hole 2100 due to the long distance between the first air hole 2100 and the opening of the air collecting hole 213, and the risk of a cavity being formed between the portion of the single-layer sole facing the first air hole 2100 and the first molding surface 200 due to air pressure, a plurality of air collecting holes 213 are arranged along the length direction of the support body 21, the first air hole 2100 is connected to the air collecting holes 213, each air collecting hole 213 is connected to no less than one first air hole 2100, and each air collecting hole 213 can correspond to the exhaust requirements of a plurality of first air holes 2100, so that the number of required air collecting holes 213 is less, the number of pore structures inside the support body 21 is reduced, and the proportion of the solid part inside the support body 21 is increased, thereby improving the strength of the support body 21.

[0060] According to some embodiments of the present application, optionally, Figure 2 to Figure 4 , Figure 6 to Figure 8 As shown, the surface insert 20 includes a plurality of raised portions and a plurality of recessed portions adapted to the pattern of the sole, each raised portion is provided with at least one second air hole 201 , and each recessed portion is provided with at least one second air hole 201 .

[0061] The shapes of the plurality of protrusions may be partially the same or may be different to fit the pattern of the single-layer sole.

[0062] The shapes of the plurality of recessed portions may be partially the same or may be different to fit the pattern of the single-layer sole.

[0063] The surface insert 20 includes a plurality of raised portions and a plurality of recessed portions adapted to the pattern of the sole, each raised portion is provided with at least one second air hole 201, and each recessed portion is provided with at least one second air hole 201, so that any air that may exist between each raised portion and each recessed portion can be discharged through the second air hole 201. When the 3D additive undersole mold 2 provided in the present application is used to process products with more complex patterns, the first molding surface 200 can also fit the product, so that the quality of the processed products is higher and more stable.

[0064] According to some embodiments of the present application, optionally, Figure 2 , Figure 4 to Figure 7 As shown, the support segment 212 is wedge-shaped, and the slopes of every two adjacent support segments 212 among the multiple support segments 212 spliced ​​to form the support body 21 fit together.

[0065] The angle between the slope of the support segment 212 and the horizontal plane is in the range of [20°, 30°]. On the one hand, the slope of the support segment 212 has a sufficient inclination angle relative to the ground, so that the spliced ​​support segments 212 can have a mutual support effect at the slope. On the other hand, the slope of the support segment 212 has a sufficient inclination angle relative to the ground so that the inclination angle is not too large, which causes the 3D printing support segment 212 to consume more support materials, thereby saving the production cost of the support segment 212.

[0066] The support segments 212 are wedge-shaped, and the slopes of every two support segments 212 of the multiple support segments 212 spliced ​​to form the support body 21 fit together, so that two adjacent support segments 212 can align and fit together by themselves under the guidance of gravity and the slope, reducing the difficulty of splicing the support segments 212.

[0067] According to some embodiments of the present application, optionally, a support mesh is disposed in the second air hole 201 .

[0068] The support net is provided with a plurality of dense small holes.

[0069] A support net is arranged in the second air hole 201. On the one hand, when a single-layer sole is injection molded, the dense support net can prevent the molding liquid from entering the second air hole 201; on the other hand, when a multi-layer sole is manufactured, the support net can prevent the single-layer sole from deforming toward the second air hole 201, thereby improving the appearance quality of the product.

[0070] According to some embodiments of the present application, optionally, Figure 6 to Figure 8 As shown, the nested component 22 includes an anchor bolt 220, the surface insert 20 is provided with a through hole for the anchor bolt 220 to pass through, the surface insert 20 is connected to the support body 21 through the anchor bolt 220, the number of the nested components 22 is multiple, and each support segment 212 is connected to the surface insert 20 through at least one anchor bolt 220.

[0071] Anchor bolt 220 is a building accessory used to firmly connect structures or equipment to concrete or other substrates. It forms an anchor with the substrate through a mechanical key principle or chemical adhesive to achieve structural stability and safety.

[0072] A single support segment 212 may be secured to the surface insert 20 by one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, or more anchors 220 .

[0073] The surface insert 20 is connected to the support body 21 through the anchor bolt 220, so that the surface insert 20 and the support body 21 have good connection stability. There are multiple nested components 22, and each support segment 212 is connected to the surface insert 20 through at least one anchor bolt 220. The support segment 212 is fixed to the surface insert 20 by the anchor bolt 220 to achieve fixation of the relative position with other support segments 212.

[0074] According to some embodiments of the present application, optionally, the surface of the anchor bolt 220 facing the molding cavity 10 is flush with the first molding surface 200 .

[0075] After the anchor bolt 220 is assembled, the first molding surface 200 can be processed into a mold cavity surface so that the surface of the anchor bolt 220 facing the molding cavity 10 is flush with the first molding surface 200 .

[0076] The surface of the anchor bolt 220 facing the molding cavity 10 can be flush with the first molding surface 200, so that the shape of the processed product will not be affected by the anchor bolt 220, thereby improving the stability of the product's shape quality.

[0077] According to some embodiments of the present application, optionally, Figure 6 to Figure 8As shown, the nested component 22 also includes a support member 221, which is provided with a through hole for the anchor bolt 220 to pass through. The support member 221 is located on the side of the surface insert 20 close to the support body 21. The support member 221 is a conical structure. The top surface of the support member 221 abuts against the surface insert 20, and the curved surface of the support member 221 abuts against the support body 21.

[0078] The axial direction of the through hole of the support member 221 is coaxial with the axial direction of the support member 221 , and the axial direction of the through hole of the support member 221 is coaxial with the anchor bolt 220 .

[0079] The support member 221 may be connected to the surface insert 20 by multiple spot welding.

[0080] The support member 221 is provided with a through hole for the anchor bolt 220 to pass through. The support member 221 is located on the side of the surface insert 20 close to the support body 21. The support member 221 is a conical structure. The top surface of the support member 221 abuts against the surface insert 20. When the anchor bolt 220 pulls the surface insert 20 toward the supporting surface 210, the bottom surface of the support member 221 can provide a supporting surface 210 for the part of the surface insert 20 pulled by the anchor bolt 220, thereby reducing the risk of deformation of the part of the surface insert 20 close to the anchor bolt 220 under the pulling of the anchor bolt 220, and reducing the risk of local deformation of the first molding surface 200 affecting the appearance quality of the product.

[0081] According to some embodiments of the present application, optionally, Figure 6 As shown, the support body 21 is provided with a plurality of mounting grooves 214 , the inner walls of the mounting grooves 214 are fitted and abutted against the curved surfaces of the support members 221 , and the plurality of mounting grooves 214 correspond one-to-one to the support members 221 of the plurality of nested components 22 .

[0082] The support body 21 is provided with a plurality of installation grooves 214, the inner walls of the installation grooves 214 are fitted and abutted against the curved surface of the support member 221, and the installation grooves 214 are installation spaces reserved for the support member 221, thereby reducing the risk of the support body 21 being irregularly deformed under the extrusion of the support member 221, thereby pushing the surface insert 20 to deform.

[0083] According to some embodiments of the present application, optionally, Fig. 9 As shown, the present application provides a 3D additive undersole mold manufacturing process for producing the above-mentioned 3D additive undersole mold 2, and the manufacturing process includes the following steps:

[0084] Step S100: obtaining a plurality of support segments 212 by 3D printing;

[0085] Step S200: splicing a plurality of support segments 212 to obtain a support body 21;

[0086] Step S300: manufacturing the surface insert 20;

[0087] Step S400: providing a nesting assembly 22, and using the nesting assembly 22 to install the surface insert 20 on the support body 21;

[0088] Step S500: performing cavity surface processing on the first molding surface 200 of the surface insert 20.

[0089] Cavity surface processing is a very critical link in mold manufacturing, which directly affects the quality of the final product and the service life of the mold. The purpose of cavity surface processing is to improve the surface finish, hardness and wear resistance of the mold, ensure that the mold can be demoulded smoothly during the production process, reduce the production cycle, and improve the surface quality of the finished product.

[0090] In step S100, multiple support segments 212 are printed in parallel through 3D printing, so that the production of multiple support segments 212 can be completed in a shorter time, thereby accelerating the production rate of the 3D additive undersole mold 2; in step S300, a surface insert 20 with a relatively smooth first molding surface 200 is manufactured by die casting, forging, stamping, etc., and then the surface insert 20 is placed on the support surface 210 of the support body 21, and the relatively rough surface of the support body 21 formed by 3D printing is covered with the relatively smooth first molding surface 200; in step S400, multiple support segments 212 are fixedly connected to the surface insert 20 through the nesting component 22 to improve the integrity of the support body 21; in step S500, the first molding surface 200 of the surface insert 20 is processed by the mold cavity surface so that the first molding surface 200 can meet the requirements of the processing mold, thereby obtaining a 3D additive undersole mold 2 capable of producing multi-layer soles.

[0091] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A 3D additive shoe sole lower mold, which can be molded with an upper mold to manufacture a multi-layer sole, characterized in that: include: The surface insert comprises a first molding surface, wherein the first molding surface and the second molding surface of the upper mold enclose a molding cavity for molding the sole; A support body, comprising a support surface and a first parting surface, wherein the support surface is used to support the surface insert, the first parting surface is in contact with the second parting surface of the upper mold to close the mold, the support surface is provided with a plurality of first pores, the first pores are connected to the first parting surface, and the second parting surface is closed with the first parting surface to block the first pores; a nesting assembly for connecting the surface insert and the support body; Wherein, the surface insert is provided with a plurality of second pores, the second pores are connected with the first pores, the plurality of second pores correspond to the plurality of first pores one by one, and the support body is formed by splicing a plurality of support segments.

2. A 3D additive undersole mold according to claim 1, characterized in that: A plurality of air collecting holes are also provided inside the support body, the first molding surface is located at the center of the first parting surface, both ends of the air collecting hole extend to the first parting surface located on both sides of the first molding surface respectively, and the plurality of air collecting holes are arranged along the length direction of the support body, the first air holes are connected to the air collecting holes, and each of the air collecting holes is connected to at least one of the first air holes.

3. The 3D additive undersole mold according to claim 1, characterized in that: The surface inlay comprises a plurality of raised portions and a plurality of recessed portions adapted to the pattern of the sole, each of the raised portions is provided with at least one of the second air holes, and each of the recessed portions is provided with at least one of the second air holes.

4. The 3D additive undersole mold according to claim 1, characterized in that: The support segment is wedge-shaped, and the slopes of every two support segments among the plurality of support segments spliced ​​together to form the support body fit together.

5. The 3D additive shoe sole mold according to claim 1, characterized in that: A supporting net is arranged in the second air hole.

6. The 3D additive undersole mold according to claim 1, characterized in that: The nested component includes an anchor bolt, the surface insert is provided with a through hole for the anchor bolt to pass through, the surface insert is connected to the support body through the anchor bolt, the number of the nested components is multiple, and each support segment is connected to the surface insert through at least one anchor bolt.

7. The 3D additive undersole mold according to claim 6, characterized in that: The surface of the anchor bolt facing the molding cavity is flush with the first molding surface.

8. The 3D additive undersole mold according to claim 6, characterized in that: The nested component also includes a support member, which is provided with a through hole for the anchor bolt to pass through. The support member is located on a side of the surface insert close to the support body. The support member is a conical structure, and the bottom surface of the support member abuts against the surface insert, and the curved surface of the support member abuts against the support body.

9. The 3D additive undersole mold according to claim 8, characterized in that: The support body is provided with a plurality of installation grooves, the inner walls of the installation grooves are fitted and abutted against the curved surface of the support member, and the plurality of installation grooves correspond one-to-one to the support members of the plurality of nested components.

10. A 3D additive undersole mold manufacturing process, used to manufacture the 3D additive undersole mold as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step S100: obtaining a plurality of support segments by 3D printing; Step S200: splicing a plurality of the support segments to obtain the support body; Step S300: making the surface insert; Step S400: providing the nesting assembly, and using the nesting assembly to install the surface insert on the support body; Step S500: performing cavity surface processing on the first molding surface of the surface insert.

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