Self-locking foldable anisotropic superstructure, bearing structure and formed product

Abstract

The invention discloses a self-locking foldable anisotropic superstructure, a bearing structure and a molded product, the anisotropic superstructure comprises two sub-units in mirror symmetry, each sub-unit is provided with a crease, the crease comprises a ridge line and a valley line, and the sub-units form a foldable structure through a connecting part between the ridge line and the valley line. According to the invention, a novel compression folding function is realized by utilizing the anisotropic characteristic of the super-structure material, and when the super-structure material is subjected to compression force, a self-locking effect can be generated through asymmetric folding and stretching of the internal subunits, so that stable supporting of the structure is realized under the condition of not adding additional fixing parts, and the structure is more stable and reliable. By using the self-locking performance of the foldable anisotropic superstructure material, the stability of the structure is improved, and the reliability of the structure when bearing an external object is also greatly enhanced.

Description

Technical Field

[0001] The invention relates to an anisotropic superstructure, a load-bearing structure and a formed product, and in particular to a self-locking and foldable anisotropic superstructure, a load-bearing structure and a formed product. Background Art

[0002] As an important technology in the field of metamaterials, the Miura folding structure has the characteristics of deformability and large fold-to-width ratio. In recent years, it has been widely used in the fields of deformable structures, buffer structures, robots, etc. At present, in the engineering applications of adaptive deformable structures such as deformable wings and deformable skins, there is a strong demand for anisotropic structures that can be adaptively deformed in the plane and have strong bending stiffness out of the plane. However, the current Miura folding structure has the problem of insufficient out-of-plane stiffness, and the Miura folding structure does not have a self-locking effect. While it can be deformed in the plane, its out-of-plane stiffness is weak. Therefore, the deformable structure design method based on the Miura folding structure is difficult to take into account the requirements of strong in-plane adaptive deformation ability and strong out-of-plane bending stiffness at the same time. It can no longer meet people's requirements and needs to be improved urgently. Summary of the invention

[0003] The purpose of the present invention is to provide a self-locking and foldable anisotropic superstructure, a load-bearing structure and a molded product, which can take into account the requirements of both in-plane adaptive deformation and strong out-of-plane bending stiffness, and solve the shortcomings of the prior art.

[0004] The present invention provides the following scheme:

[0005] A self-locking and foldable anisotropic superstructure comprises two mirror-symmetrical subunits, each of which has a folding line, and the folding line comprises a ridge line and a valley line. The subunit forms a foldable and self-locking folding structure through the connection between the ridge line and the valley line.

[0006] Furthermore, the subunit includes a first and a second subunit in a strip shape, the two ends of the first and the second subunit are respectively a first connecting end and a second connecting end extending radially, the first connecting end is a pyramidal shape, and the second connecting end is a non-pyramid shape, and the first connecting end of the first subunit is fixedly connected to the second connecting end of the second subunit.

[0007] Furthermore, the subunit includes a third and a fourth subunit, and the third and the fourth subunit are in the shape of a parallelogram, and the folds on the third and the fourth subunit are specifically as follows: one end of the first fold is arranged on the first obtuse angle of the parallelogram, and the other end of the first fold is arranged on the opposite side of the first obtuse angle, one end of the second fold is arranged on the second obtuse angle of the parallelogram, and the other end of the second fold is arranged on the corresponding side of the second obtuse angle, and an intermediate fold is arranged between the two long sides of the parallelogram.

[0008] Furthermore, the third and fourth subunits also include third, fourth, fifth and sixth folds, wherein one end of the third fold is connected to the first fold, and the other end is connected between the first obtuse angle and the first acute angle, one end of the fourth fold is connected to the first fold, and the other end is connected between the middle fold and the first obtuse angle, one end of the fifth fold is connected between the middle fold and the second obtuse angle, and the other end is connected to the second fold, and one end of the sixth fold is connected between the second obtuse angle and the second acute angle, and the other end is connected to the second fold.

[0009] Furthermore, the third and fourth subunits are fixedly connected.

[0010] Furthermore, the subunits are mirror-symmetrical fifth and sixth subunits, and the fifth and sixth subunits are trapezoids, with diagonal folds connecting the relative acute angles and obtuse angles in the trapezoid, and also including top edge folds and waist edge folds, wherein one end of the top edge fold is arranged on the top edge of the trapezoid, and the other end is arranged on the diagonal fold, and one end of the waist edge fold is arranged on the waist of the trapezoid, and the other end is arranged on the diagonal fold, and the fifth and sixth subunits are fixedly connected via the waist of the trapezoid.

[0011] A load-bearing structure, comprising the self-locking and foldable anisotropic superstructure, wherein the subunits in the anisotropic superstructure are first and second subunits, and a plurality of the first and second subunits are arranged to form a plane load-bearing structure, or:

[0012] The subunits in the anisotropic superstructure are the third and fourth subunits, and a plurality of the third and fourth subunits are arranged to form a planar bearing structure, or:

[0013] The subunits in the anisotropic superstructure are the fifth and sixth subunits, and a plurality of the fifth and sixth subunits are arranged to form a planar bearing structure.

[0014] A method for preparing an anisotropic superstructure, used for preparing the self-locking and foldable anisotropic superstructure, comprising:

[0015] A three-dimensional model of the folding structure is constructed using computer-aided design, and the three-dimensional model is divided into a rigid area and a flexible area;

[0016] Using 3D printing to generate a composite layer structure, the composite layer structure includes a reinforcing fiber layer and a thermoplastic material layer;

[0017] forming a folded structure having ridges and valleys at adjacent joints of the reinforcing fiber layer and the thermoplastic material layer;

[0018] Alternately lay rigid material layers and flexible material layers, with adjacent layers isolated by support materials. After 3D printing is completed, the support materials are removed to allow adjacent layers to move relative to each other, forming corresponding creases.

[0019] The folding structure formed by 3D printing is subjected to a heat treatment and / or curing step to be fixedly connected to generate a corresponding folding structure.

[0020] Furthermore, the reinforcing fiber layer is specifically carbon fiber, glass fiber, aramid fiber or thermosetting resin material, and the thermoplastic material layer is specifically thermoplastic polyurethane or nylon material.

[0021] An anisotropic superstructure forming product is applied to a superstructure or a variant aircraft. The anisotropic superstructure forming product is prepared by the preparation method of the anisotropic superstructure. The anisotropic superstructure forming product includes the self-locking and foldable anisotropic superstructure and / or the load-bearing structure.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] In the present invention, the anisotropic properties of the superstructure material are utilized to realize a new type of compression and folding function. When the superstructure material is subjected to compression force, it can produce a self-locking effect through the asymmetric folding and stretching of the internal subunits, thereby achieving stable support of the structure without adding additional fixings. By utilizing the self-locking performance of the foldable anisotropic superstructure material, not only the stability of the structure is improved, but also its reliability when carrying external objects is greatly enhanced.

[0024] The anisotropic superstructure provided by the present invention exhibits its unique mechanical properties when facing forces in different directions. When subjected to in-plane forces, the specific mirror structure exhibits lower stiffness, allowing it to flexibly adapt to various deformation requirements without being damaged. This is particularly important for application scenarios that require frequent adjustment of the shape, such as deformable robots, foldable furniture, etc. When facing external surface forces, the structure exhibits higher bending stiffness, which enables it to effectively resist external impact and pressure and protect the internal structure from damage.

[0025] The anisotropic superstructure, supporting structure and molded products provided by the present invention are not only innovative in theory, but also have wide applicability in practical applications. For example, they can be used to construct various platforms or planes to carry and support other objects, such as in the fields of aerospace, building structures, medical equipment, etc., providing a new type of lightweight, high-strength, deformable structural solution with versatility and adaptability, which will have immeasurable potential in future engineering and design fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a self-locking and foldable anisotropic superstructure support structure formed by multiple sub-units.

[0028] Figure 2 It is a schematic diagram of the structure after the first and second subunits are fixedly connected.

[0029] Figure 3 It is a schematic diagram of the structure after the third or fourth subunit is expanded.

[0030] Figure 4 It is a schematic diagram of the structure after the third or fourth subunit is folded.

[0031] Figure 5 It is a schematic diagram of the structure after the third and fourth subunits are fixedly connected.

[0032] Figure 6 This is a schematic diagram of the structure after the third and fourth subunits are fixedly connected from another perspective.

[0033] Figure 7 This is a schematic diagram of the structure after the third and fourth subunits are fixedly connected from another perspective.

[0034] Figure 8 It is a schematic diagram of the structure after the fifth or sixth subunit is expanded.

[0035] Fig. 9 This is a schematic diagram of the structure of the fifth or sixth subunit after folding.

[0036] Fig.10 It is a schematic diagram of the structure after the fifth and sixth subunits are fixedly connected.

[0037] Fig.11 This is a schematic diagram of the structure after the fifth and sixth subunits are fixedly connected from another perspective.

[0038] Fig.12 This is a schematic diagram of the structure after the fifth and sixth subunits are fixedly connected from another perspective. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a self-locking and foldable anisotropic superstructure, wherein the anisotropic superstructure includes two mirror-symmetrical subunits, each subunit has a fold, and the fold includes a ridge line and a valley line. The subunit forms a foldable and expandable folding structure through the connection between the ridge line and the valley line. When the anisotropic superstructure of the embodiment of the present application produces a bending deformation tendency, the two mirror-symmetrical subunits must have the phenomenon of folding and stretching out of sync. Based on the characteristics of the self-locking phenomenon when the two subunits are folded or stretched out asynchronously, the in-plane direction of the anisotropic superstructure has a compression folding function. The anisotropic superstructure includes subunits of various shapes and structures. Multiple subunits are combined to form a self-locking and foldable load-bearing structure. The load-bearing structure can deform adaptively, has a large bending stiffness in the out-of-plane direction, and can carry heavy objects. In the embodiment of the present application, the in-plane direction refers to the direction toward the central axis of the subunit, and the out-of-plane direction refers to the direction away from the central axis of the subunit.

[0041] exist Figure 2 The first subunit 1 and the second subunit 2 shown in the figure are in the shape of long strips. One end of the first subunit 1 extends a first connection end 11 and a second connection end 12 along its radial direction, respectively. The other end of the first subunit also has the same or similar structure as the first and second connection ends. One end of the second subunit 2 extends a third connection end 21 and a fourth connection end 22 along its radial direction, respectively. The other end of the second subunit 2 also has the same or similar structure as the third and fourth connection ends. The first connection end 11 is pyramidal, the second connection end 12 is non-pyramidal, the third connection end 21 is pyramidal, and the fourth connection end 22 is non-pyramidal. In some embodiments, the first connection end 11 of the first subunit is fixedly connected to the fourth connection end 22 of the second subunit, that is, the pyramidal connection ends and the non-pyramidal connection ends in different first and second subunits are fixedly connected to each other to form a structure.

[0042] like Figures 3 to 7The third and fourth subunits shown are in the shape of a parallelogram. Since the third and fourth subunits are mirror-symmetrical structures, the basic structure of the other subunit can be understood by taking any one of the third and fourth subunits as an example. Taking the third subunit as an example, one end of the first fold 301 is arranged on the first obtuse angle 311 of the parallelogram, and the other end of the first fold 301 is arranged on the opposite side of the first obtuse angle 311. One end of the second fold 302 is arranged on the second obtuse angle 312 of the parallelogram, and the other end of the second fold 302 is arranged on the correspondence of the second obtuse angle 312. An intermediate fold 300 is arranged between the two long sides of the parallelogram.

[0043] Similarly, the third and fourth subunits also include third, fourth, fifth and sixth folds: third fold 303, fourth fold 304, fifth fold 305 and sixth fold 306, wherein one end of third fold 303 is connected to first fold 301, and the other end of third fold 303 is connected between first obtuse angle 311 and first acute angle 321, one end of fourth fold 304 is connected to first fold 301, and the other end of fourth fold 304 is connected between middle fold 300 and first obtuse angle, one end of fifth fold 305 is connected between middle fold 300 and second obtuse angle 312, and the other end of fifth fold 305 is connected to second fold 302, one end of sixth fold 306 is connected between second obtuse angle 312 and second acute angle 322, and the other end of sixth fold 306 is connected to second fold 302.

[0044] The third and fourth sub-units can be folded into sub-units with different folding shapes through the first crease to the sixth crease, for example: a valley line is formed between connection part A and connection part B through the third crease 303, a ridge line is formed between connection part B and connection part C through the first crease 301, a valley line is formed between connection part C and connection part D through the fourth crease 304, a ridge line is formed between connection part E and connection part F through a part of the second crease 302, a valley line is formed between connection part E and connection part G through the fifth crease 305, and a ridge line is formed between connection part G and connection part H through another part of the second crease 302. The compression and folding function can be achieved through the folds between the connection part A to the connection part H and the adjacent connection parts. Since the different sub-units forming the folding structure are mirror images, there must be a situation where the folding and stretching are not synchronized between the two mirror-symmetrical sub-units. When the two mirror-symmetrical sub-units are folded or stretched, a self-locking phenomenon will occur. As a supporting structure, it has a large out-of-plane bending stiffness and a self-locking function and can carry heavy objects. The third and fourth sub-units can be fixedly connected to form one of the components of the support platform. For example, the long sides of the third sub-unit and the fourth sub-unit coincide with each other to form one of the components of the support platform.

[0045] Multiple of the first and second sub-units can be arranged into a planar load-bearing structure. Similarly, multiple of the third and fourth sub-units can also be arranged into a planar load-bearing structure. The load-bearing structure formed between the first and second sub-units and the third and fourth sub-units can form a molded product used in a superstructure or a variant aircraft. The above-mentioned molded product can achieve two-dimensional compression and stretching, can adapt to changes in in-plane shape, and when subjected to out-of-plane loads and produces a bending tendency, it will produce a self-locking effect, significantly improving the out-of-plane stiffness.

[0046] like Figures 8 to 12 As shown, in this embodiment, the subunits are the fifth subunit 5 and the sixth subunit 6 which are mirror-symmetrical, and the fifth and sixth subunits are both trapezoidal. When the fifth and sixth subunits are in the expanded form, their trapezoidal structures have relative acute angles 504 and obtuse angles 505, and a diagonal fold 501 is connected between the acute angle 504 and the obtuse angle 505. The fifth and sixth units also include a top edge fold 502 and a waist edge fold 503, wherein one end of the top edge fold 502 is arranged on the top edge of the trapezoid, and the other end of the top edge fold 502 is arranged on the diagonal fold 501, and one end of the waist edge fold 503 is arranged on the waist of the trapezoid, and the other end is arranged on the diagonal fold 501. The fifth and sixth units can form specific folding structures through their own various creases. For example, in some embodiments, they are bent downward along the top edge crease 502 and the waist edge crease 503, so that the diagonal crease 501 is bent downward synchronously, that is, the connection part H1 and the connection part H2 are recessed downward along the diagonal crease 501, and a part of the diagonal crease 501 is between the connection part H1 and the connection part H2, which forms a valley line, and the other part of the diagonal crease 501: the connection part L1 and the connection part L2 protrude upward to form a ridge line. The fifth and sixth sub-units are mirror-symmetrical structures, and the fifth and sixth sub-units can be fixedly connected by a trapezoidal waist to form a foldable and self-locking folding structure. When multiple fifth and sixth sub-units are arranged and fixedly connected along the same plane, a load-bearing structure with a self-locking function can be formed.

[0047] Through the description of the first to sixth subunits in the above embodiment, it can be known that the subunits in the anisotropic superstructure considered in the embodiment of the present application can be arranged on a plane to form a load-bearing structure by utilizing the characteristics of its mirror structure, for example:

[0048] The subunits in the anisotropic superstructure are first and second subunits, and a plurality of the first and second subunits are arranged to form a planar bearing structure, or:

[0049] The subunits in the anisotropic superstructure are the third and fourth subunits, and a plurality of the third and fourth subunits are arranged to form a planar bearing structure, or:

[0050] The subunits in the anisotropic superstructure are the fifth and sixth subunits, and a plurality of the fifth and sixth subunits are arranged to form a planar bearing structure.

[0051] The present invention utilizes the unique mechanical properties of anisotropic superstructures when facing forces in different directions. The self-locking function can be achieved through a folding structure with mirror-symmetric characteristics. When the load-bearing structure is subjected to inward forces, the specific mirror structure exhibits lower stiffness, allowing it to flexibly adapt to various deformation requirements without being damaged. This is particularly important for application scenarios that require frequent adjustments to the shape, such as deformable robots, foldable furniture, etc. When subjected to outward forces, the load-bearing structure exhibits higher bending stiffness, which enables it to effectively resist external impacts and pressures and protect the internal structure from damage.

[0052] The present invention also provides a method for preparing an anisotropic superstructure, which is used for the self-locking and foldable anisotropic superstructure described in the embodiment of the present application, comprising:

[0053] A three-dimensional model of the folding structure is constructed using computer-aided design, and the three-dimensional model is divided into a rigid area and a flexible area;

[0054] Using 3D printing to generate a composite layer structure, the composite layer structure includes a reinforcing fiber layer and a thermoplastic material layer;

[0055] forming a folded structure having ridges and valleys at adjacent joints of the reinforcing fiber layer and the thermoplastic material layer;

[0056] Alternately lay rigid material layers and flexible material layers, with adjacent layers isolated by support materials. After 3D printing is completed, the support materials are removed to allow adjacent layers to move relative to each other, forming corresponding creases.

[0057] The folding structure formed by 3D printing is subjected to a heat treatment and / or curing step to be fixedly connected to generate a corresponding folding structure.

[0058] Preferably, the reinforcing fiber layer is specifically carbon fiber, glass fiber, aramid fiber or thermosetting resin material, and the thermoplastic material layer is specifically thermoplastic polyurethane or nylon material.

[0059] The preparation method provided by the present invention realizes the effective combination of rigid area and flexible area through computer-aided design and 3D printing technology, combines the mechanical properties of the customized structure with the selection of different reinforcing fibers and thermoplastic materials, and optimizes the configuration of the preparation materials. Through the isolation technology of alternating composite layer structures and supporting materials, complex folding forms can be achieved, and the effect of generating a folding structure with ridges and valleys in the composite layer structure is achieved. The folding structure prepared by the preparation method provided in the embodiment of the present application can maintain its shape and stability without the need for additional fixing elements, has the characteristics of foldability and self-locking, and has an anisotropic superstructure with excellent mechanical properties and self-locking characteristics. The folding structure shows reliable stability when unfolding and folding, and is suitable for applications that require repeated folding and unfolding, such as deployable structures, portable devices, deformable robots and other fields.

[0060] Those skilled in the art will appreciate that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined.

[0061] It should be noted that certain words are used in this specification and claims to refer to specific components. Those skilled in the art should understand that different manufacturers and producers may use different terms to refer to the same component. This specification and claims do not use the difference in terms as a way to distinguish components, but use the difference in the functions of the components as the criterion for distinction.

[0062] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, any one of the embodiments claimed in the claims can be used in any combination in the embodiments of the present invention.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-locking foldable anisotropic superstructure, characterized in that: The anisotropic superstructure includes two mirror-symmetrical subunits, each of which has a fold, and the fold includes a ridge line and a valley line. The subunit forms a foldable and self-locking folding structure through the connection between the ridge line and the valley line.

2. The self-locking foldable anisotropic superstructure according to claim 1, characterized in that: The subunit includes a first and a second strip-shaped subunit, the two ends of the first and the second subunit are respectively a first connecting end and a second connecting end extending radially, the first connecting end is a pyramidal shape, and the second connecting end is a non-pyramid shape, and the first connecting end of the first subunit is fixedly connected to the second connecting end of the second subunit.

3. The self-locking foldable anisotropic superstructure according to claim 1, characterized in that: The subunits include third and fourth subunits, and the third and fourth subunits are in the shape of parallelograms. The folds on the third and fourth subunits are specifically as follows: one end of the first fold is arranged on the first obtuse angle of the parallelogram, and the other end of the first fold is arranged on the opposite side of the first obtuse angle, one end of the second fold is arranged on the second obtuse angle of the parallelogram, and the other end of the second fold is arranged on the corresponding side of the second obtuse angle, and an intermediate fold is arranged between the two long sides of the parallelogram.

4. The self-locking foldable anisotropic superstructure according to claim 3, characterized in that: The third and fourth subunits also include third, fourth, fifth and sixth folds, wherein one end of the third fold is connected to the first fold, and the other end is connected between the first obtuse angle and the first acute angle, one end of the fourth fold is connected to the first fold, and the other end is connected between the middle fold and the first obtuse angle, one end of the fifth fold is connected between the middle fold and the second obtuse angle, and the other end is connected to the second fold, and one end of the sixth fold is connected between the second obtuse angle and the second acute angle, and the other end is connected to the second fold.

5. The self-locking foldable anisotropic superstructure according to claim 3, characterized in that: The third and fourth subunits are fixedly connected.

6. The self-locking foldable anisotropic superstructure according to claim 1, characterized in that: The subunits are the fifth and sixth subunits that are mirror-symmetrical. The fifth and sixth subunits are trapezoids, and diagonal folds are connected between the opposite acute angles and obtuse angles in the trapezoid. The subunits also include top edge folds and waist edge folds, wherein one end of the top edge fold is arranged on the top edge of the trapezoid, and the other end is arranged on the diagonal folds, and one end of the waist edge fold is arranged on the waist of the trapezoid, and the other end is arranged on the diagonal folds. The fifth and sixth subunits are fixedly connected via the waist of the trapezoid.

7. A bearing structure, characterized in that: The load-bearing structure comprises the self-locking foldable anisotropic superstructure according to any one of claims 1 to 6, wherein the subunits in the anisotropic superstructure are first and second subunits, and a plurality of the first and second subunits are arranged to form a planar load-bearing structure, or: The subunits in the anisotropic superstructure are the third and fourth subunits, and a plurality of the third and fourth subunits are arranged to form a planar bearing structure, or: The subunits in the anisotropic superstructure are the fifth and sixth subunits, and a plurality of the fifth and sixth subunits are arranged to form a planar bearing structure.

8. A method for preparing an anisotropic superstructure, for preparing the self-locking and foldable anisotropic superstructure according to any one of claims 1 to 6, characterized in that: include: A three-dimensional model of the folding structure is constructed using computer-aided design, and the three-dimensional model is divided into a rigid area and a flexible area; Using 3D printing to generate a composite layer structure, the composite layer structure includes a reinforcing fiber layer and a thermoplastic material layer; forming a folded structure having ridges and valleys at adjacent joints of the reinforcing fiber layer and the thermoplastic material layer; Alternately lay rigid material layers and flexible material layers, with adjacent layers isolated by support materials. After 3D printing is completed, the support materials are removed to allow adjacent layers to move relative to each other, forming corresponding creases. The folding structure formed by 3D printing is subjected to a heat treatment and / or curing step to be fixedly connected to generate a corresponding folding structure.

9. The method for preparing an anisotropic superstructure according to claim 8, characterized in that: The reinforcing fiber layer is specifically carbon fiber, glass fiber, aramid fiber or thermosetting resin material, and the thermoplastic material layer is specifically thermoplastic polyurethane or nylon material.

10. An anisotropic superstructure formed product, applied to a superstructure or a deformable aircraft, characterized in that: The anisotropic superstructure molded product is prepared by the method for preparing the anisotropic superstructure according to claim 8, and the anisotropic superstructure molded product includes the self-locking and foldable anisotropic superstructure according to any one of claims 1 to 6, and / or the load-bearing structure according to any one of claim 7.

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