CN220464766U - Controllable three-dimensional gradient structure - Google Patents
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- CN220464766U CN220464766U CN202320651903.0U CN202320651903U CN220464766U CN 220464766 U CN220464766 U CN 220464766U CN 202320651903 U CN202320651903 U CN 202320651903U CN 220464766 U CN220464766 U CN 220464766U
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Abstract
The application relates to the technical field of controllable three-dimensional gradient structures, in particular to a controllable three-dimensional gradient structure. The three-dimensional cell structure comprises 4-8 different three-dimensional cell structures, preferably 2-4 three-dimensional cell structures and a normal structure, wherein the volume of the adjustable structure accounts for 40-80%, the volume of the normal structure accounts for 20-60%, and the gradient form change mode comprises one or more of change combination of cell point position structure change, cell distribution direction density change and regional cell porosity change, preferably combination of cell point position structure change and cell distribution direction density change. According to different application scenes, the density degree of the unit cell distribution direction is flexibly adjusted, the unit cell porosity in the area is changed, the unit cell distribution direction can be flexibly arranged and combined, and the controllable three-dimensional gradient structure is used for wearing shoes and clothing, sports equipment, medical protection and furniture daily necessities, and comprehensively meets the optimal supporting, damping and rebound performance.
Description
Technical Field
The application relates to the technical field of controllable three-dimensional gradient structures, in particular to a controllable three-dimensional gradient structure.
Background
The sole is the part of the shoe that bears the weight of the user, and besides having a shock absorbing effect, it is also the durability, weight, comfort of the shoe. Today, in order for the shoe to adequately fit the user's foot, 3D printing is typically used to customize the shoe to fit the user's foot.
Additive manufacturing, commonly known as 3D printing, integrates computer-aided design, material processing and forming technologies, and is a manufacturing technology for manufacturing solid objects by stacking special metal materials, nonmetal materials and medical biological materials layer by layer in the modes of extrusion, sintering, melting, photo-curing, spraying and the like through a software and numerical control system based on digital model files. Compared with the traditional processing mode of removing, cutting and assembling raw materials, the method is a manufacturing method from bottom to top through material accumulation, and the method is free from existence. This makes it possible to manufacture complex structural members that would otherwise be prohibitively expensive to manufacture.
When applied to the field of shoes, the controllable three-dimensional gradient structure is commonly used for manufacturing soles, and the soles are composed of different three-dimensional cell structures. The plurality of different three-dimensional cell structures can be combined to construct a controllable three-dimensional gradient structure, and with the continuous development of 3D printing technology in recent years, articles capable of being printed by the 3D printing technology are also various. The controllable three-dimensional gradient structure has various application scenes due to the diversity of the structure. The lattice soles of the prior art are structurally unitary in combination, which makes the finished structure too limited.
Disclosure of Invention
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings hereof.
The object of the present application is to overcome the above-mentioned drawbacks and to provide a controllable three-dimensional gradient structure.
In order to achieve the above purpose, the technical solution of the present application is:
a controllable three-dimensional gradient structure comprises 4-8 different three-dimensional cell structures, preferably 2-4 three-dimensional cell structures, wherein the three-dimensional cell structures are an adjustable structure and a normal structure, the volume of the adjustable structure accounts for 40-80%, the volume of the normal structure accounts for 20-60%, and the gradient form change mode comprises one or more of change combinations of cell point position structure change, cell distribution direction density change and regional cell porosity change, preferably the combination of cell point position structure change and cell distribution direction density change. Generating a stable structure lattice and a plurality of dynamic structure lattices of a basic lattice, wherein the plurality of dynamic structure lattices are generated based on the stable structure lattice and a plurality of gradient coefficients; at least 2 basic lattices are selected to form a three-dimensional gradient structure, and the gradient coefficients are one or more of variation combinations of an arithmetic difference and an geometric coefficient.
In some embodiments, the tunable structure is a Poisson's ratio range-1 after dynamic tuning of the cell lattice<μ 1 <0.5, preferably mu 1 The range is-0.6 to 0.4.
In some embodiments, the normal structure is a Poisson's ratio range of 0.5 after dynamic adjustment of the cell lattice>μ 2 >0, preferably mu 2 The range is 0.2 to 0.4.
In some embodiments, the unit cell point location structure changes obtain a new edge shape through point coordinate position changes, and different gradient change unit cells are subdivided according to actual requirements.
In some embodiments, the cell distribution direction density variation is: changing the direction and density of the unit cell according to the uniform gradient of different shapes.
In some embodiments, regional cell porosity varies: the regional cell porosity is varied as required.
In some embodiments, the controllable three-dimensional gradient structure is fabricated using additive manufacturing, polymer material manufacturing, or a combination of conventional split-mold injection molding.
In some embodiments, the polymeric material in the manufacture of the polymeric material is one or more of a thermoplastic polyurethane, a thermoplastic polyester, a thermoplastic polyamide, a polyolefin-based thermoplastic elastomer, a thermoplastic styrene elastomer, preferably a thermoplastic polymer.
In some embodiments, the additive manufacturing technique is at least one of a fused deposition modeling technique, a powder bed fusion, a powder bed reaction modeling technique, a stereoscopic/digital UV light curing technique, a three-dimensional printing bond modeling technique.
In some embodiments, the controllable three-dimensional gradient structure is used in footwear wear, athletic equipment, medical protection, furniture items of daily use.
Through adopting foretell technical scheme, the beneficial effect of this application is:
the controllable three-dimensional gradient structure can be formed by combining various unit cells, the density degree of the unit cell distribution direction can be flexibly adjusted according to different application scenes, the unit cell porosity in the area can be changed, the controllable three-dimensional gradient structure can be flexibly arranged and combined, and the controllable three-dimensional gradient structure is used for wearing shoes and clothing, sports equipment, medical protection and furniture daily necessities, and comprehensively meets the optimal performance of support, shock absorption and rebound resilience.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and not to limit it.
In the drawings, like parts are designated with like reference numerals and are illustrated schematically and are not necessarily drawn to scale.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only one or several embodiments of the present application, and other drawings can be obtained according to such drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a first cell structure of a controllable three-dimensional gradient structure of the present application;
FIG. 2 is a schematic diagram of a second cell structure of the controllable three-dimensional gradient structure of the present application;
FIG. 3 is a schematic diagram of a third cell structure of the controllable three-dimensional gradient structure of the present application;
FIG. 4 is a schematic diagram of a fourth cell structure of the controllable three-dimensional gradient structure of the present application;
FIG. 5 is a schematic diagram of a fifth cell structure of the controllable three-dimensional gradient structure of the present application;
FIG. 6 is a schematic diagram of a sixth cell structure of the controllable three-dimensional gradient structure of the present application;
FIG. 7 is a schematic diagram of a seventh cell structure of the controllable three-dimensional gradient structure of the present application;
FIG. 8 is a schematic diagram of an eighth cell structure of the controllable three-dimensional gradient structure of the present application;
FIG. 9 is a schematic diagram of the structure of the core structural unit cell in the controllable three-dimensional gradient structure of the present application;
fig. 10 is a schematic structural diagram of the kelvin structural unit cell in the controllable three-dimensional gradient structure of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below in connection with the detailed description. It should be understood that the detailed description is presented merely to explain the application and is not intended to limit the application.
In addition, in the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc. indicate or refer to an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. However, it is noted that direct connection indicates that the two bodies connected together do not form a connection relationship through a transition structure, but are connected together to form a whole through a connection structure. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1-8, fig. 1 is a schematic diagram of a first cell structure of the controllable three-dimensional gradient structure of the present application; FIG. 2 is a schematic diagram of a second cell structure of the controllable three-dimensional gradient structure of the present application; FIG. 3 is a schematic diagram of a third cell structure of the controllable three-dimensional gradient structure of the present application; FIG. 4 is a schematic diagram of a fourth cell structure of the controllable three-dimensional gradient structure of the present application; FIG. 5 is a schematic diagram of a fifth cell structure of the controllable three-dimensional gradient structure of the present application; FIG. 6 is a schematic diagram of a sixth cell structure of the controllable three-dimensional gradient structure of the present application; FIG. 7 is a schematic diagram of a seventh cell structure of the controllable three-dimensional gradient structure of the present application; FIG. 8 is a schematic diagram of an eighth cell structure of the controllable three-dimensional gradient structure of the present application.
The embodiment provides a controllable three-dimensional gradient structure, which comprises 4-8 different three-dimensional cell structures, preferably 2-4 three-dimensional cell structures, wherein the three-dimensional cell structures are an adjustable structure and a normal structure, the volume of the adjustable structure accounts for 40-80%, the volume of the normal structure accounts for 20-60%, and the gradient form change mode comprises one or more change combinations of cell point position structure change, cell distribution direction density change and regional cell porosity change, preferably the combination of cell point position structure change and cell distribution direction density change.
In some embodiments, the tunable structure is a Poisson's ratio range-1 after dynamic tuning of the cell lattice<μ 1 <0.5, preferably mu 1 The range is-0.6 to 0.4. Poisson's ratio refers to the ratio of the absolute value of the positive transverse strain to the positive axial strain of a material under unidirectional tension or compression, also known as the transverse deformation coefficient, which is the elastic constant that reflects the transverse deformation of a material.
In some embodiments, the unit cell point location structure change obtains a new edge shape through point coordinate position change, and different gradient change unit cells can be subdivided according to actual requirements.
In some embodiments, the cell distribution direction density variation is: changing the direction and density of the unit cell according to the uniform gradient of different shapes. If the cell is used for constructing a sole model, the cell direction and the density are adjusted according to the weight of a user and the size of feet so as to ensure the stability and the comfort of the support.
In some embodiments, regional cell porosity varies: the regional cell porosity is varied as required. The porosity is reasonably adjusted to adjust the strength of the integral structure of the regional unit cell.
In some embodiments, the controllable three-dimensional gradient structure is fabricated using a polymeric material, preferably a thermoplastic polymer, which may further preferably be one or more of a thermoplastic polyurethane, a thermoplastic polyester, a thermoplastic polyamide, a polyolefin-based thermoplastic elastomer, a thermoplastic styrene elastomer.
Referring to fig. 9 and 10, fig. 9 is a schematic structural diagram of a body-centered structural unit cell in a controllable three-dimensional gradient structure of the present application; fig. 10 is a schematic structural diagram of the kelvin structural unit cell in the controllable three-dimensional gradient structure of the present application.
In some embodiments, the normal structure is a Poisson's ratio range of 0.5 after dynamic adjustment of the cell lattice>μ 2 >0, preferably mu 2 The range is 0.2 to 0.4. Alternative structures are body centered structures and Kelvin structures.
When the controllable three-dimensional gradient structure is applied to the field of sports shoes, the controllable three-dimensional gradient structure is often applied to the construction of soles, namely, different three-dimensional cell structures are adopted to construct a model, then model files are input into a 3D printer to print out soles, soles with different elasticity can be manufactured according to the foot sizes, and the elasticity is changed through density change.
A controllable three-dimensional gradient structure is produced by computationally generating a three-dimensional unit cell structure and gradient combination, using additive manufacturing or conventional split-mold injection molding combination.
In some embodiments, the additive manufacturing technique is one of a fused deposition modeling technique, a powder bed fusion modeling technique, a stereoscopic/digital UV light curing technique, a three-dimensional printing bond modeling technique.
The fused deposition modeling technique is FDM, which is a shorthand form of Fused Deposition Modeling, namely fused deposition modeling. FDM is popular in that materials are melted into a liquid state by using high temperature, extruded by a printing head, and then solidified, and finally arranged in a three-dimensional space to form a three-dimensional object. Powder bed fusion forming technology, technology of additive manufacturing by laser fusion on a powder bed. UV light curing technology, ultraviolet light UV (wavelength 200-400 nm) curing is a type of radiation curing, which is a process of initiating a rapid conversion of a chemically reactive liquid substance into a solid substance by ultraviolet light. Three-dimensional printing bonding molding technology, and bonding finished products by using 3D printing.
In some embodiments, the controllable three-dimensional gradient structure is used for shoe wear, sports equipment, medical protection, furniture daily necessities, and comprehensively satisfies optimal supporting, damping and rebound performance.
It is to be understood that the embodiments disclosed herein are not limited to the particular structures disclosed herein, but are intended to extend to equivalents of such features as would be understood by one of ordinary skill in the relevant arts. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.
Reference in the specification to "an embodiment" means that a particular feature, or characteristic, described in connection with the embodiment is included in at least one embodiment of the application. Thus, appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.
Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, numbers, etc., to provide a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other structures, components, etc.
Claims (10)
1. The controllable three-dimensional gradient structure is characterized by comprising 4-8 different three-dimensional cell structures, wherein the three-dimensional cell structures are an adjustable structure and a normal structure, the volume of the adjustable structure accounts for 40-80%, the volume of the normal structure accounts for 20-60%, and the gradient form change mode comprises one or more of change combinations of cell point position structure change, cell distribution direction density change and regional cell porosity change.
2. The controllable three-dimensional gradient structure according to claim 1, wherein,the adjustable structure is Poisson's ratio range-1 after dynamic adjustment of unit cell lattice<μ 1 <0.5。
3. The controllable three-dimensional gradient structure of claim 1, wherein the normal structure is a poisson's ratio range of 0.5 after dynamic adjustment of the unit cell lattice>μ 2 >0。
4. The controllable three-dimensional gradient structure according to claim 1, wherein the unit cell point location structure changes obtain new edge-like shapes through point coordinate position changes, and different gradient change unit cells are subdivided according to actual requirements.
5. The controllable three-dimensional gradient structure according to claim 1, wherein the unit cell distribution direction density varies as: changing the direction and density of the unit cell according to the uniform gradient of different shapes.
6. The controllable three-dimensional gradient structure of claim 1, wherein the regional cell porosity varies: the regional cell porosity is varied as required.
7. The controllable three-dimensional gradient structure of claim 1, wherein the controllable three-dimensional gradient structure is fabricated using additive manufacturing, polymer material manufacturing, or a combination of conventional split-mold injection molding.
8. The controlled three-dimensional gradient structure according to claim 7, wherein the polymeric material in the manufacture of the polymeric material is one or more of thermoplastic polyurethane, thermoplastic polyester, thermoplastic polyamide, polyolefin-based thermoplastic elastomer, thermoplastic styrene elastomer.
9. The controllable three-dimensional gradient structure of claim 7, wherein the additive manufacturing technique is at least one of a fused deposition modeling technique, a powder bed fusion, a powder bed reaction modeling technique, a stereoscopic/digital UV light curing technique, a three-dimensional printing bonding modeling technique.
10. The controllable three-dimensional gradient structure of claim 1, wherein the controllable three-dimensional gradient structure is used in footwear wear, athletic equipment, medical protection, furniture items of daily use.
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