Three-dimensional printing dental cast
By adopting honeycomb support structure and open hole design, the contradiction between support performance and material utilization of the three-dimensional printing model is solved, which enhances deformation resistance and saves materials, achieving more efficient material utilization.
Patent Information
- Application Number
- CN202422053662.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The support structure of existing three-dimensional printing models is difficult to balance between material saving and enhanced support performance, especially insufficient support for the side walls of the model, resulting in insufficient material waste and insufficient deformation resistance.
A honeycomb-shaped support structure is adopted, and the partial thickness of the support wall in the first direction is smaller than the thickness of the outer wall, and a plurality of openings are provided on the support wall. The support part is projected in a honeycomb-like manner on the first plane, which enhances the support to the side wall of the model and reduces the wall thickness of the main body part.
It improves the deformation resistance of the three-dimensional printing dental mold, saves materials and reduces internal stress, and achieves more efficient material utilization.
Smart Images
Figure CN223126679U_ABST
Abstract
Description
Technical Field
[0001] This application mainly relates to the field of 3D printing, and particularly to a 3D printed dental model. Background Art
[0002] In the field of 3D printing, a stereolithography 3D printer is a commonly used tool. It uses stereolithography technology to cure layer by layer in a liquid photosensitive resin to construct a three-dimensional object. This printing technology has been widely used in various fields, including medicine, design, manufacturing, etc. However, with the gradual development of 3D printing automation, sometimes the printed three-dimensional model cannot be immediately cured, but needs to be placed and waited for a period of time, which poses higher requirements for the anti-deformation ability of the model.
[0003] In the prior art, for the consideration of saving materials and reducing weight, the model usually has a cavity, and the top and bottom of the model are connected by longitudinal support columns in the cavity. This support method ignores the side walls of the model. In order to avoid deformation, the wall thickness of the model needs to be higher, which in turn causes waste of materials. Therefore, there is an urgent need for a model design with stronger support performance and at the same time achieving the effect of saving materials. Summary of the Utility Model
[0004] The technical problem to be solved by this application is to provide a 3D printed dental model with stronger support and material saving at the same time.
[0005] To solve the above technical problem, this application provides a 3D printed dental model, including: a main body part, the bottom of the main body part is located in a first plane and is open at the bottom, the inside of the main body part has a receiving cavity, and the main body part has an outer wall; a support part, located in the receiving cavity, the projection of the support part on the first plane is honeycomb-shaped, and the support part has support walls extending from the bottom to the outer wall along a first direction perpendicular to the first plane; wherein, the thickness of at least part of the support walls in the first direction is less than the thickness of the outer wall.
[0006] In an embodiment of this application, the support walls have a plurality of openings arranged along the first direction.
[0007] In an embodiment of this application, the distance a between adjacent two openings satisfies: 2.5 mm ≤ a ≤ 3.5 mm.
[0008] In an embodiment of this application, the shapes of the plurality of openings are circular, and the diameter b of the openings satisfies: 1.5 mm ≤ b ≤ 2.5 mm.
[0009] In an embodiment of this application, the thickness H2 of the outer wall satisfies: H2 ≤ 1.5 mm.
[0010] In an embodiment of this application, the thickness H1 of the support walls satisfies: 0.4 mm ≤ H1 ≤ 2 mm.
[0011] In an embodiment of the present application, the support wall has a first region near the bottom and a second region away from the bottom in a first direction, and the thickness of the support wall in the first region is greater than the thickness of the support wall in the second region.
[0012] In an embodiment of the present application, the first sub-thickness D1 of the support wall in the first region satisfies: 1.5 mm ≤ D1 ≤ 2 mm.
[0013] In an embodiment of the present application, the second sub-thickness D2 of the support wall in the second region satisfies: 0.4 mm ≤ D2 ≤ 0.5 mm.
[0014] In an embodiment of the present application, the projection of the support part on the first plane has a plurality of regular hexagons, and the side length c of the regular hexagon satisfies: 3.5 mm ≤ c ≤ 4.5 mm.
[0015] Compared with the prior art, the three-dimensional printed dental model provided by the present application uses a honeycomb support structure inside instead of the traditional longitudinal support columns, which not only provides an all-round support effect for the top of the model, but also for the side walls of the model, enhances the anti-deformation ability of the model, and thus can reduce the wall thickness of the main body of the model, achieving the effect of saving materials. In addition, the plurality of openings provided on the support wall can reduce stress and further save materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are provided to provide a further understanding of the present application, and they are incorporated and constitute a part of the present application. The accompanying drawings illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application. In the accompanying drawings:
[0017] Figure 1 is a perspective schematic view of a three-dimensional printed dental model of the present application.
[0018] Figure 2 is a cross-sectional schematic view of a three-dimensional printed dental model of the present application.
[0019] Three-dimensional printed dental model 100
[0020] Main body part 110
[0021] Bottom 111
[0022] Accommodation cavity 112
[0023] Outer wall 113
[0024] Support part 120
[0025] Support wall 121
[0026] First region 122
[0027] Second region 123
[0028] Opening 124 Detailed implementation manners
[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without creative efforts, the present application can also be applied to other similar scenarios based on these drawings. Unless it is obvious from the language context or otherwise stated, the same reference numerals in the drawings represent the same structure or operation.
[0030] As shown in the present application and the claims, unless the context clearly indicates an exceptional situation, words such as "a", "an", "one", and / or "the" are not specifically singular and may also include plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.
[0031] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.
[0032] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the outline of each component itself.
[0033] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" another device or structure will then be positioned "below" or "under" the other device or structure. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding interpretations of the spatial relative descriptions used herein will be made accordingly.
[0034] In addition, it should be noted that the use of terms such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without further statement, the above terms have no special meaning, and thus should not be construed as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some of the terms mentioned in the specification of this application may be selected by the applicant according to his or her judgment, and their detailed meanings are described in the relevant parts of this description. In addition, it is required to understand this application not only through the actual terms used, but also through the meaning implied by each term.
[0035] It should be understood that when a component is referred to as "on another component", "connected to another component", "coupled to another component", or "in contact with another component", it can be directly on, connected to, or coupled to, or in contact with the other component, or there may be an intervening component. In contrast, when a component is referred to as "directly on another component", "directly connected to", "directly coupled to", or "directly in contact with" another component, there is no intervening component. Similarly, when the first component is referred to as "electrically in contact with" or "electrically coupled to" the second component, there is an electrical path allowing current to flow between the first component and the second component. The electrical path may include capacitors, coupled inductors, and / or other components allowing current to flow, even if there is no direct contact between the conductive components.
[0036] Figure 1 is a three-dimensional schematic diagram of a three-dimensional printed dental model of the present application. Figure 2 is a cross-sectional schematic diagram of a three-dimensional printed dental model of the present application. With reference to Figure 1-2As shown in the figure, the present application provides a three-dimensional printed dental model, which includes a main body portion and a support portion located inside the main body portion. Among them, the bottom of the main body portion is located in the first plane, and the inside of the main body portion has a receiving cavity. The bottom of the main body portion is open. This design can effectively reduce the resin material required for three-dimensional printing, playing a role in cost savings. The support portion is located in the receiving cavity of the main body portion to play a supporting role, increasing the strength of the three-dimensional printed dental model.
[0037] Specifically, the support portion in the three-dimensional printed dental model provided by this application is honeycomb-shaped. That is to say, the projection of the support portion on the first plane is honeycomb-shaped (refer to Figure 2 as shown), and the honeycomb-shaped projection of the support portion on the first plane fully covers the edge of the bottom of the main body portion, thereby connecting and supporting the side wall portion of the main body portion of the three-dimensional printed dental model. At the same time, the support portion also has a support wall that extends from the bottom to the outer wall in the first direction AA' perpendicular to the first plane, thereby achieving the effect of connecting and supporting between the bottom and the top of the three-dimensional printed dental model. It should be noted that the "side wall portion of the main body portion" mentioned here refers to the portion of the side of the three-dimensional printed dental model that approximately extends along the first direction AA'. In the prior art, support columns along the first direction AA' are usually used, and it is difficult to take care of this portion, resulting in weak support strength.
[0038] Furthermore, in this embodiment, at least part of the thickness of the support wall in the first direction AA' is less than the thickness of the outer wall. It can be understood that, in order to enhance the anti-deformation ability of the dental model, the thickness of the outer wall of the main body portion is theoretically better to be as large as possible. The support portion is arranged in a honeycomb shape in the receiving cavity. This structure improves the anti-deformation ability of the three-dimensional printed dental model, and at least part of the thickness of the support wall does not need to be the same as that of the outer wall to achieve the above technical effect. At the same time, the existence of the internal support portion can also reduce the requirement for the wall thickness of the outer wall, further achieving the effect of saving materials.
[0039] Specifically, in some embodiments of the present application, the thickness of the outer wall of the main body portion is uniformly H2, and H2 satisfies: H2 ≤ 1.5 mm. The thickness H1 of the support wall satisfies: 0.4 mm ≤ H1 ≤ 2 mm. As mentioned above, at least part of the thickness of the support wall in the first direction AA' is less than the thickness of the outer wall, and at least part of the thickness of the support wall in the first direction AA' can also be greater than the thickness of the outer wall. As Figure 2 shown in the figure is a preferred embodiment of the present application. In this embodiment, the thickness of the support wall in the first direction AA' is not uniform. The support wall has a first region near the bottom and a second region far from the bottom in the first direction AA', and the thickness of the support wall in the first region and the second region is not the same. Specifically, the thickness of the support wall in the first region is greater than the thickness of the support wall in the second region.
[0040] It can be understood that the part of the support wall in the first region can be approximately regarded as the bottom of the three-dimensional printed dental model. Since the bottom of the three-dimensional printed dental model in this embodiment is open, if the thickness of the support wall here is too small, it may still cause a decrease in the anti-deformation ability of the dental model at this point, resulting in deformation. To avoid this, in the three-dimensional printed dental model provided in this application, the position of the support wall close to the bottom (that is, the first region) is thickened. Specifically, in an embodiment of this application, the first sub-thickness D1 of the support wall in the first region satisfies: 1.5 mm ≤ D1 ≤ 2 mm; the second sub-thickness D2 of the support wall in the second region satisfies: 0.4 mm ≤ D2 ≤ 0.5 mm.
[0041] Further, referring to Figure 2 As shown, in this embodiment, the support wall of the three-dimensional printed dental model also has a plurality of openings arranged along the first direction AA'. This design can, on the one hand, reduce the internal stress of the three-dimensional printed dental model after printing and avoid subsequent deformation, and on the other hand, can also reduce the overall weight of the three-dimensional printed dental model, further achieving the purpose of saving materials.
[0042] Specifically, in a preferred embodiment of this application, the shapes of the plurality of openings are circular, and the diameter b of the openings satisfies: 1.5 mm ≤ b ≤ 2.5 mm. In some other embodiments, the shapes of the openings can also be oval, rounded rectangle, etc., which can be specifically changed according to actual needs, and this application does not make specific limitations here.
[0043] In an embodiment of this application, the intervals between the plurality of openings are uniform, and the distance a between every two adjacent openings satisfies: 2.5 mm ≤ a ≤ 3.5 mm. In some other embodiments, the intervals between the plurality of openings can also be different, and this application does not make specific limitations here.
[0044] In an embodiment of this application, the projection of the support part on the first plane has a plurality of regular hexagons, and the side length c of the regular hexagons satisfies: 3.5 mm ≤ c ≤ 4.5 mm.
[0045] Compared with the prior art, the three-dimensional printed dental model provided in this application uses a honeycomb-like support structure inside to replace the traditional longitudinal support columns, which not only provides an all-round support effect on the top of the model, but also on the side walls of the model, enhances the anti-deformation ability of the model, and thus can reduce the wall thickness of the main body of the model, achieving the effect of saving materials. In addition, the plurality of openings provided on the support wall can also reduce stress and further save materials.
[0046] The basic concepts have been described above. Obviously, for those skilled in the art, the above application disclosure is only an example and does not constitute a limitation to this application. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are proposed in this application, so such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of this application.
[0047] Meanwhile, this application uses specific terms to describe the embodiments of this application. Such as "one embodiment", "an embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more at different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.
[0048] Similarly, it should be noted that, in order to simplify the expression of this application disclosure and thus help the understanding of one or more application embodiments, in the previous description of the embodiments of this application, sometimes multiple features are merged into one embodiment, drawing, or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than those mentioned in the claims. In fact, the features of the embodiments are fewer than all the features of the individual embodiments disclosed above.
[0049] In some embodiments, numbers are used to describe the components and the quantity of attributes. It should be understood that such numbers used for the description of embodiments are, in some examples, modified by the modifiers "about", "approximate", or "substantially". Unless otherwise stated, "about", "approximate", or "substantially" indicate that the said numbers allow a variation of ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, and such approximate values may change according to the characteristics required by individual embodiments. In some embodiments, the numerical parameters should consider the specified significant digits and adopt the method of retaining the general number of digits. Although the numerical ranges and parameters used in some embodiments of this application to confirm the breadth of their scope are approximate values, in specific embodiments, the setting of such numerical values is as precise as possible within the feasible range.
[0050] Although this application has been described with reference to the current specific embodiments, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate this application, and various equivalent changes or substitutions can be made without departing from the spirit of this application. Therefore, as long as the changes and variations of the above embodiments are within the scope of the spirit of this application, they will fall within the scope of the claims of this application.
Claims
1. A three-dimensional printed dental model, characterized in that, Comprising: A main body portion, the bottom of the main body portion is located in a first plane, and the bottom is open, the interior of the main body portion has a receiving cavity, and the main body portion has an outer wall; A support portion, located in the receiving cavity, the projection of the support portion on the first plane is honeycomb-shaped, and the support portion has support walls extending from the bottom to the outer wall in a first direction perpendicular to the first plane; wherein, The thickness of at least a part of the support wall in the first direction is less than the thickness of the outer wall.
2. The three-dimensional printed dental model according to claim 1, wherein The support wall has a plurality of openings arranged in the first direction.
3. The three-dimensional printed dental model according to claim 2, wherein The distance a between two adjacent openings satisfies: 2.5 mm ≤ a ≤ 3.5 mm.
4. The three-dimensional printed dental model according to claim 2, characterized in that, The shapes of the plurality of openings are circular, and the diameter b of the openings satisfies: 1.5 mm ≤ b ≤ 2.5 mm.
5. The three-dimensional printed dental model according to claim 1, wherein The thickness H2 of the outer wall satisfies: H2 ≤ 1.5 mm.
6. The three-dimensional printed dental model according to claim 1, wherein The thickness H1 of the support wall satisfies: 0.4 mm ≤ H1 ≤ 2 mm.
7. The three-dimensional printed dental model according to claim 6, wherein, The support wall has a first region near the bottom and a second region away from the bottom in the first direction, and the thickness of the support wall in the first region is greater than the thickness of the support wall in the second region.
8. The dental mold according to claim 7, characterized in that, The first sub-thickness D1 of the support wall in the first region satisfies: 1.5 mm ≤ D1 ≤ 2 mm.
9. The three-dimensional printed dental model according to claim 7, wherein The second sub-thickness D2 of the support wall in the second region satisfies: 0.4 mm ≤ D2 ≤ 0.5 mm.
10. The three-dimensional printed dental model according to claim 1, wherein, The projection of the support portion on the first plane has a plurality of regular hexagons, and the side length c of the regular hexagons satisfies: 3.5 mm ≤ c ≤ 4.5 mm.