Curved centroid lattice sealing structure for heterogeneous interface connection and preparation method of curved centroid lattice sealing structure

Abstract

The invention discloses a curved centroid lattice sealing structure for heterogeneous interface connection and a preparation method thereof, and the structure comprises a groove which is formed in an interface of a metal material; the curved centered cubic lattices are formed in the grooves and are continuously arranged in the length direction of the grooves, each curved centered cubic lattice comprises four vertical rods and four arc rods, the four vertical rods are arranged in a matrix mode, the two ends of each arc rod are connected to the two opposite ends of the corresponding vertical rod, and the arc rods are connected to the two opposite ends of the corresponding vertical rod. The arc tops of the four arc rods are connected together, the interface of the polymer material is bonded to the interface of the metal material, filling protruding edges are formed on the interface of the polymer material, and the grooves are filled with the filling protruding edges which wrap the multiple curved centered cubic lattices. The problem that the connection strength and the sealing performance cannot meet the requirements of special working conditions due to the fact that metal and polymer materials are connected through traditional connection methods such as mechanical connection and glue joint is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heterogeneous material connection, and in particular to a curved core lattice sealing structure for heterogeneous interface connection and a preparation method thereof. Background Art

[0002] The connection between metal and polymer materials plays a vital role in the field of modern manufacturing. For example, in the fields of aerospace and automobile manufacturing, metal-polymer connection technology can not only achieve lightweight structures, but also be used for sealing in harsh and extreme working conditions. With the increasing requirements for the connection performance of heterogeneous materials, traditional mechanical connection, adhesive bonding and other methods have been difficult to meet the requirements. Summary of the invention

[0003] In order to overcome the defects of the prior art, a curved core lattice sealing structure for heterogeneous interface connection and a preparation method thereof are provided to solve the problem that the connection strength and sealing of metal and polymer materials using traditional connection methods such as mechanical connection and adhesive connection cannot meet the requirements of special working conditions.

[0004] To achieve the above object, a curved core lattice sealing structure for heterogeneous interface connection is provided, comprising:

[0005] Grooves are opened at the interface of metal materials;

[0006] A plurality of curved body-centered cubic lattices, wherein the plurality of curved body-centered cubic lattices are formed in the groove, and the plurality of curved body-centered cubic lattices are continuously arranged along the length direction of the groove, wherein the curved body-centered cubic lattices include four vertical rods and four circular arc rods, wherein the four vertical rods are arranged in a matrix, wherein the two ends of the circular arc rods are connected to the opposite ends of the vertical rods, and the arc tops of the four circular arc rods are connected together, and the interface of the polymer material is bonded to the interface of the metal material, and the interface of the polymer material is formed with filling ridges, and the filling ridges are filled in the groove and coated on the plurality of curved body-centered cubic lattices.

[0007] Furthermore, the height of the vertical rod is adapted to the chord length of the adjacent circular arc rod.

[0008] Furthermore, the connection point of the four arc rods is located at the geometric center of the curved body-centered cubic lattice.

[0009] Furthermore, the multiple bent body-centered cubic lattices are arranged in multiple rows, and the multiple rows of bent body-centered cubic lattices are arranged along the width direction of the groove and / or the multiple rows of bent body-centered cubic lattices are arranged along the depth direction of the groove.

[0010] Furthermore, the number of the grooves is multiple.

[0011] Furthermore, the plurality of grooves are spaced apart along the length direction of the interface of the metal material and / or the plurality of grooves are spaced apart along the width direction of the interface of the metal material.

[0012] The present invention provides a method for preparing a curved core lattice sealing structure for heterogeneous interface connection, comprising the following steps:

[0013] A groove is formed at the interface of the metal material, and a plurality of curved body-centered cubic lattices are formed in the groove;

[0014] The polymer material is melted and die-casted on the interface of the metal material, and the polymer material fills the grooves and covers the multiple curved body-centered cubic lattices to solidify and form filling ridges.

[0015] Furthermore, the plurality of curved body-centered cubic lattices are printed by using additive manufacturing technology.

[0016] The beneficial effect of the present invention lies in that the curved body-centered lattice sealing structure for heterogeneous interface connection of the present invention is based on the inner suture lines of the beetle exoskeleton elytra, and proposes a groove-filling curved body-centered cubic lattice sealing structure for heterogeneous material connection interfaces: the elliptical geometric mechanism of the inner suture lines of the beetle elytra is applied to the lattice design, the direct connection method of the body-centered cubic lattice is changed to a curve connection passing through the center point, and vertical support rods are used to connect the nodes in the stretching direction again, thereby forming a new lattice structure-the curved body-centered lattice.

[0017] In order to further improve the sealing performance of the connection interface of heterogeneous materials, the curved core lattice structure is placed in the groove. On the one hand, the connection strength is improved by the lattice structure, and on the other hand, the overall sealing performance of the structure is further improved by the groove structure, ultimately achieving the optimal comprehensive performance of sealing and connection strength.

[0018] The curved core lattice structure of the present invention is the main functional microstructure to achieve the connection strength of heterogeneous materials, and the groove structure is the main functional microtexture to achieve the sealing performance of heterogeneous material connection. A through groove structure is set on the metal structure, and the groove cross-section shape can be rectangular or dovetail.

[0019] When preparing the curved body-centered cubic lattice sealing structure for heterogeneous interface connection of the present invention, the metal material with grooves distributed on the surface and filled with curved body-centered cubic lattice microstructure is first printed by using additive manufacturing technology, and then the polymer material is melted and die-cast onto the interface of the metal material. The part of the polymer material in the groove forms a tenon structure that matches the metal material. The two are combined to form a metal-polymer interlocking mortise and tenon structure, achieving high connection strength and good sealing performance.

[0020] The curved body-centered lattice sealing structure for heterogeneous interface connection of the present invention adjusts the overall connection strength of the structure by adjusting the diameter of the rods or the overall cell size in the curved body-centered cubic lattice structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 It is a schematic structural diagram of a curved core lattice sealing structure for heterogeneous interface connection according to an embodiment of the present invention.

[0023] Figure 2 Schematic diagram of the decomposed structure of a curved core lattice sealing structure for heterogeneous interface connection according to an embodiment of the present invention.

[0024] Figure 3 Schematic diagram of the structure of a curved body-centered cubic lattice according to an embodiment of the present invention.

[0025] Figure 4 Schematic diagram of the structure of a single-row curved BCC lattice according to an embodiment of the present invention.

[0026] Figure 5 Schematic diagram of the structure of a multi-row bent-body centered cubic lattice according to an embodiment of the present invention.

[0027] Figure 6 Schematic diagram of nodes of a curved body-centered cubic lattice according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] Reference Figures 1 to 6 As shown, the present invention provides a curved body-centered cubic lattice sealing structure for heterogeneous interface connection, including: a groove and a curved body-centered cubic lattice 2.

[0031] In this embodiment, the heterogeneous interface connection is the connection between the interface of the metal material 3 and the interface of the polymer material 4. The interface of the polymer material 4 is bonded to the interface of the metal material 3, and specifically, the polymer material is bonded to the interface of the metal material 3 by melting.

[0032] The groove is opened at the interface of the metal material 3. In this embodiment, there are multiple grooves.

[0033] As a preferred embodiment, a plurality of grooves are arranged at intervals along the length direction of the interface of the metal material 3 , or a plurality of grooves are arranged at intervals along the width direction of the interface of the metal material 3 .

[0034] In other embodiments, some of the grooves are arranged at intervals along the length direction of the interface of the metal material 3. Another portion of the grooves are arranged at intervals along the width direction of the interface of the metal material 3. Some of the grooves are arranged to intersect with another portion of the grooves.

[0035] There are multiple curved body-centered cubic lattices 2. The multiple curved body-centered cubic lattices 2 are formed in the groove. The multiple curved body-centered cubic lattices 2 are continuously arranged along the length direction of the groove.

[0036] Specifically, each curved body-centered cubic lattice 2 includes four vertical rods 21 and four arc rods 22. The four vertical rods 21 are arranged in a matrix. Two ends of the arc rods 22 are connected to the opposite ends of the vertical rods 21. The four arc rods 22 are connected together at the arc tops.

[0037] In this embodiment, the four arc rods are connected together at the tops of the outer arc surfaces.

[0038] The interface of the polymer material 4 is formed with filling ridges 41. The filling ridges 41 are filled in the grooves and cover the plurality of curved body-centered cubic lattices 2.

[0039] See also Figure 1 and Figure 2 As shown, the polymer material is melt-casted on the interface of the metal material 3. The polymer material fills the grooves and covers the plurality of curved body-centered cubic lattices 2 to solidify and form filled ridges.

[0040] As a preferred embodiment, the height of the vertical rod 21 is adapted to the distance between two adjacent vertical rods 21, that is, a single curved body-centered cubic lattice is in the shape of a regular cube.

[0041] The connection point of the four arc rods 22 is located at the geometric center of the curved body-centered cubic lattice 2 .

[0042] In this embodiment, the height of the vertical pole is adapted to the chord length of the adjacent arc pole. The two ends of the arc pole are respectively connected to the two ends of the vertical pole.

[0043] See also Figure 6 As shown, a single curved body-centered cubic lattice 2 is composed of four arc rods and four vertical rods, and the whole presents a curved body-centered cubic lattice structure;

[0044] The four arc rods are: passing through node 1 to connect to the central node 9 and then to node 5; passing through node 2 to connect to the central node 9 and then to node 6; passing through node 3 to connect to the central node 9 and then to node 7; passing through node 4 to connect to the central node 9 and then to node 8. The four arc rods form a cross-linked structure;

[0045] The four vertical poles are: connecting node 5 through node 1, connecting node 6 through node 2, connecting node 7 through node 3, and connecting node 8 through node 4. The four vertical poles form a reinforcement structure.

[0046] Four arc rods and four vertical rods together form a curved body-centered cubic lattice structure.

[0047] As a preferred embodiment, a plurality of bent-joined BCC lattices 2 are arranged in multiple rows. The multiple rows of bent-joined BCC lattices 2 are arranged along the width direction of the groove and / or the multiple rows of bent-joined BCC lattices 2 are arranged along the depth direction of the groove.

[0048] See also Figure 5 As shown, a plurality of curved body-centered cubic lattices 2 are arranged in multiple rows. The multiple rows of curved body-centered cubic lattices 2 are arranged in a matrix on the cross section of the groove.

[0049] The present invention provides a method for preparing a curved core lattice sealing structure for heterogeneous interface connection, comprising the following steps:

[0050] S1. A groove is formed at the interface of the metal material 3, and a plurality of curved body-centered cubic lattices 2 are formed in the groove.

[0051] Multiple curved body-centered cubic lattices are printed using additive manufacturing technology.

[0052] S2, melting the polymer material 4 and die-casting it on the interface of the metal material 3, the polymer material 4 fills the grooves and covers the plurality of curved body-centered cubic lattices 2 to solidify and form filling ridges 41.

[0053] Many structures in nature, such as spongy bones, leaf veins, skeletons, honeycombs, and beetle elytra, exhibit curved shapes that disperse external forces, reduce stress concentration, and optimize stress distribution. Among them, the beetle exoskeleton elytra have a unique feature: the medial suture that permanently fuses the two elytra together, and its elliptical geometry and layered microstructure provide mechanical interlocking and toughening under critical strain.

[0054] The curved body-centered cubic lattice sealing structure for heterogeneous interface connection of the present invention is based on the inner suture lines of the beetle exoskeleton elytra, and proposes a groove-filling curved body-centered cubic lattice sealing structure for heterogeneous material connection interfaces: the elliptical geometric mechanism of the inner suture lines of the beetle elytra is applied to the lattice design, and the direct connection method of the body-centered cubic lattice is changed to a curve connection passing through the center point, and vertical support rods are used to connect the nodes in the stretching direction again, thereby forming a new lattice structure-the curved body-centered lattice.

[0055] In order to further improve the sealing performance of the connection interface of heterogeneous materials, the curved core lattice structure is placed in the groove. On the one hand, the connection strength is improved by the lattice structure, and on the other hand, the overall sealing performance of the structure is further improved by the groove structure, ultimately achieving the optimal comprehensive performance of sealing and connection strength.

[0056] The curved core lattice structure of the present invention is the main functional microstructure to achieve the connection strength of heterogeneous materials, and the groove structure is the main functional microtexture to achieve the sealing performance of heterogeneous material connection. A through groove structure is set on the metal structure, and the groove cross-section shape can be rectangular or dovetail.

[0057] The curved body-centered lattice sealing structure for heterogeneous interface connection of the present invention fills the groove with a curved body-centered cubic lattice, which can be a single lattice filling or a multi-lattice filling, and finally forms a groove-filled curved body-centered cubic lattice microstructure. The curved body-centered lattice sealing structure for heterogeneous interface connection of the present invention arranges this microstructure periodically at the metal-polymer heterogeneous material connection interface to form a metal-polymer composite structure with high connection strength and sealing performance.

[0058] When preparing the curved body-centered cubic lattice sealing structure for heterogeneous interface connection of the present invention, the metal material with grooves distributed on the surface and filled with curved body-centered cubic lattice microstructure is first printed by using additive manufacturing technology, and then the polymer material is melted and die-cast onto the interface of the metal material. The part of the polymer material in the groove forms a tenon structure that matches the metal material. The two are combined to form a metal-polymer interlocking mortise and tenon structure, achieving high connection strength and good sealing performance.

[0059] The curved body-centered lattice sealing structure for heterogeneous interface connection of the present invention adjusts the overall connection strength of the structure by adjusting the diameter of the rods or the overall cell size in the curved body-centered cubic lattice structure, and can further improve the sealing performance of the structure by adjusting the number of grooves and the shape of the groove cross section.

[0060] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A curved core lattice sealing structure for heterogeneous interface connection, characterized in that: include: Grooves are opened at the interface of metal materials; A plurality of curved body-centered cubic lattices, wherein the plurality of curved body-centered cubic lattices are formed in the groove, and the plurality of curved body-centered cubic lattices are continuously arranged along the length direction of the groove, wherein the curved body-centered cubic lattices include four vertical rods and four circular arc rods, wherein the four vertical rods are arranged in a matrix, wherein the two ends of the circular arc rods are connected to the opposite ends of the vertical rods, and the arc tops of the four circular arc rods are connected together, and the interface of the polymer material is bonded to the interface of the metal material, and the interface of the polymer material is formed with filling ridges, and the filling ridges are filled in the groove and coated on the plurality of curved body-centered cubic lattices.

2. The curved core lattice sealing structure for heterogeneous interface connection according to claim 1, characterized in that: The height of the vertical rod is adapted to the chord length of the adjacent circular arc rod.

3. The curved core lattice sealing structure for heterogeneous interface connection according to claim 2, characterized in that: The connection point of the four arc rods is located at the geometric center of the curved body-centered cubic lattice.

4. The curved core lattice sealing structure for heterogeneous interface connection according to claim 1, characterized in that: The multiple bent body-centered cubic lattices are arranged in multiple rows, and the multiple rows of bent body-centered cubic lattices are arranged along the width direction of the groove and / or the multiple rows of bent body-centered cubic lattices are arranged along the depth direction of the groove.

5. The curved core lattice sealing structure for heterogeneous interface connection according to claim 4, characterized in that: The number of the grooves is plural.

6. The curved core lattice sealing structure for heterogeneous interface connection according to claim 5, characterized in that: The plurality of grooves are arranged at intervals along the length direction of the interface of the metal material and / or the plurality of grooves are arranged at intervals along the width direction of the interface of the metal material.

7. A method for preparing a curved core lattice sealing structure for heterogeneous interface connection according to any one of claims 1 to 6, characterized in that: The following steps are involved: A groove is formed at the interface of the metal material, and a plurality of curved body-centered cubic lattices are formed in the groove; The polymer material is melted and die-casted on the interface of the metal material, and the polymer material fills the grooves and covers the multiple curved body-centered cubic lattices to solidify and form filling ridges.

8. The preparation method according to claim 7, characterized in that: The multiple curved body-centered cubic lattices are printed by using additive manufacturing technology.

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