3D printing supporting piece and 3D printing structure

Abstract

The utility model relates to a 3D printing support piece and 3D printing structure, the 3D printing support piece is used for supporting the 3D printing piece, the 3D printing support piece comprises a support main body and a support part which are connected, the support main body and the 3D printing piece are spaced, the support part comprises a plurality of support points, the plurality of support points are arranged at intervals along the circumferential direction of the support main body, and the support part is used for supporting the 3D printing piece. And the supporting points are used for being in point contact with the 3D printing piece. The 3D printing supporting piece can be conveniently removed from a 3D printing piece, and the quality and performance of the 3D printing piece can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field, specifically, relate to a kind of 3D printing support and 3D printing structure. BACKGROUND

[0002] 3D printing technology, based on discrete-accumulation principle, three-dimensional digital model is sliced by computer software, obtains layered two-dimensional plane data, then in 3D printer according to slice profile, raw material is " from bottom to top, layer by layer forming, layer by layer superimposed", finally obtains three-dimensional entity parts. In the process of part printing forming, the part needs to be supported to prevent the part from collapsing, deforming and other problems during forming.

[0003] In related technology, the support structure on the part needs to be removed by mechanical processing, the process is complex, and the operation is difficult, and for some high-precision medical devices, when the support structure is designed unreasonably, the quality and performance are difficult to guarantee, resulting in a high rejection rate of the printed parts. SUMMARY

[0004] The utility model aims at at least one of the technical problems in the related art to some extent.

[0005] Therefore, the embodiment of the utility model provides a kind of 3D printing support, which can be removed from 3D printing part conveniently, and the quality and performance of 3D printing part can be guaranteed.

[0006] The embodiment of the utility model provides a kind of 3D printing structure.

[0007] The 3D printing support of the embodiment of the utility model is used to support 3D printing part, and the 3D printing support includes a support body and a support part connected, the support body is spaced apart from 3D printing part, and the support part includes a plurality of support points, the plurality of support points are arranged along the circumferential direction of the support body, and the support points are used to point contact with the 3D printing part.

[0008] According to the 3D printing support of the embodiment of the utility model, since the support body is spaced apart from the 3D printing part, the support points point contact with the 3D printing part, the contact area of the 3D printing support and the 3D printing part can be reduced, so that the 3D printing support can be removed from the 3D printing part conveniently, and since the plurality of support points are arranged along the circumferential direction of the support body, the stability of the 3D printing support supporting the 3D printing part can be improved, the collapse, deformation and other problems of the 3D printing part during printing can be reduced, and the quality and performance of the 3D printing part can be guaranteed.

[0009] In some embodiments, the support part is two, two of the support part is arranged on the opposite sides of the support body.

[0010] In some embodiments, the support body comprises a plurality of support pieces, a plurality of the support pieces are sequentially arranged around the circumference of the central axis of the support body, each of the support pieces corresponds to at least one support point.

[0011] In some embodiments, a plurality of the support pieces are parallel and pass through the central axis of the support body.

[0012] In some embodiments, the support part is a tooth tip, the tip of the tooth tip extends away from the support body, and the tip of the tooth tip constitutes the support point.

[0013] In some embodiments, the outer peripheral contour of the tooth tip is an isosceles triangle, the apex angle of the isosceles triangle constitutes the tooth tip; and / or, the angle of the tooth tip is α, wherein 40°≤α≤50°.

[0014] In some embodiments, the thickness of the support piece is A, wherein 0.08mm≤A≤0.12mm; and / or, the length of the support piece is B, wherein 1.0mm≤B≤1.4mm; and / or, the height of the support piece is C, wherein 0.25mm≤C≤0.4mm.

[0015] In some embodiments, the angle between two adjacent support pieces is β, wherein 50°≤β≤70°.

[0016] Another embodiment of the 3D printing structure of the utility model includes: 3D printing piece and 3D printing support piece, the 3D printing support piece is any one of the 3D printing support piece in the embodiment of the utility model, the 3D printing support piece and the 3D printing piece abut, to support the 3D printing piece.

[0017] According to the 3D printing structure of the embodiment of the utility model, since the support body is spaced apart from the 3D printing piece, the support point is in point contact with the 3D printing piece, the contact area of the 3D printing support piece and the 3D printing piece can be reduced, so that the 3D printing support piece can be conveniently removed from the 3D printing piece, and since a plurality of support points are spaced apart along the circumference of the support body, the stability of the 3D printing support piece supporting the 3D printing piece can be improved, the problems of collapse, deformation and the like occurring when the 3D printing piece is printing can be reduced, and the quality and performance of the 3D printing piece can be ensured.

[0018] In some embodiments, the 3D printing piece comprises an intervertebral fusion cage, and the intervertebral fusion cage abuts against the support point on the 3D printing support piece. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 This is a schematic diagram of the 3D printed structure according to an embodiment of the present invention.

[0020] Figure 2 This is a partial schematic diagram of the 3D printed structure according to an embodiment of the present invention.

[0021] Figure 3 This is a perspective view of the 3D printed support component according to an embodiment of the present invention.

[0022] Figure 4 This is a top view of the 3D printed support component according to an embodiment of the present invention.

[0023] Figure label:

[0024] 1. 3D printed support component; 11. Support body; 111. Support piece; 12. Support section; 121. Support point; 122. Tooth tip;

[0025] 2. 3D printed parts; 21. Intervertebral fusion device; 211. Porous structure; 22. Substrate. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] The following is a reference appendix. Figures 1 to 4 This invention describes the 3D printed support 1 and the 3D printed structure according to an embodiment of the present invention.

[0028] like Figures 1 to 4 As shown, the 3D printing support 1 of this utility model embodiment is used to support the 3D printed part 2. The 3D printing support 1 includes a connected support body 11 and a support part 12. The support body 11 is spaced apart from the 3D printed part 2. The support part 12 includes a plurality of support points 121. The plurality of support points 121 are arranged at intervals along the circumference of the support body 11, and the support points 121 are used to make point contact with the 3D printed part 2.

[0029] According to the embodiments of the present invention, the 3D printing support 1, since the support body 11 is spaced apart from the 3D printed part 2, and the support point 121 is in point contact with the 3D printed part 2, can reduce the contact area between the 3D printing support 1 and the 3D printed part 2, thereby making it easier to remove the 3D printing support 1 from the 3D printed part 2. Furthermore, since multiple support points 121 are arranged at intervals along the circumference of the support body 1, the stability of the 3D printing support 1 in supporting the 3D printed part 2 can be improved, reducing problems such as collapse and deformation that occur during the printing of the 3D printed part 2, reducing the impact of the 3D printing support 1 on the surface quality of the finished product, and improving the quality and performance of the 3D printed part 2.

[0030] It can be understood that the 3D printing support 1 can be installed between two adjacent 3D printing pieces 2, or between the 3D printing piece 2 and the base plate 22.

[0031] In an example, one end of the 3D printing support 1 is connected with the base plate 22, and the other end of the 3D printing support 1 is in point contact with the 3D printing piece 2 through the support part 12.

[0032] In another example, as shown in Figure 2 and Figure 3 , the support part 12 is two, and the two support parts 12 are arranged on opposite sides of the support body 11. Two 3D printing pieces 2 are arranged on both sides of the 3D printing support 1, and the two 3D printing pieces 2 are respectively in abutment with the 3D printing support 1 through the corresponding support part 12. In this way, multiple 3D printing pieces 2 can be stacked and printed, and are spaced apart by the 3D printing support 1 to improve the production efficiency of the 3D printing piece 2.

[0033] Optionally, as shown in Figure 2 and Figure 3 , the support body 11 includes a plurality of support pieces 111, and the plurality of support pieces 111 are sequentially arranged around the circumference of the central axis of the support body 11, and each support piece 111 corresponds to at least one support point 121. The 3D printing support 1 of the embodiment of the utility model is designed as a combined structure of support pieces 111, which can reduce the weight of the support body 11 on the one hand, avoid applying too much pressure to the 3D printing piece 2 below the 3D printing support 1, and prevent the 3D printing piece 2 from being deformed under pressure. On the other hand, the support body 11 in the form of a sheet can save materials, reduce material waste, and reduce the production cost of the 3D printing piece 2 while ensuring stability.

[0034] Further, the plurality of support pieces 111 are parallel and pass through the central axis of the support body 11. It can be understood that the plurality of support pieces 111 are arranged in a certain angle of rotation around the central axis of the support body 11 as the rotation axis. In this way, the stability of the 3D printing support 1 can be improved, the probability of deformation of the 3D printing support 1 under pressure can be reduced, and the material consumption can be saved.

[0035] Optionally, as shown in Figure 2 and Figure 3 , the support part 12 is a tooth tip 122, the tip end of the tooth tip 122 extends away from the support body 11, and the tip end of the tooth tip 122 constitutes the support point 121. It can be understood that the tooth tip 122 structure as the support part 12 of the 3D printing support 1 reduces the contact area between the 3D printing support 1 and the 3D printing piece 2, and is conducive to improving the stability of the 3D printing support 1.

[0036] In an example, as shown in Figure 2 The outer peripheral contour of the tooth tip 122 is an isosceles triangle, and the top angle of the isosceles triangle constitutes the tooth tip 122, so that the pressure borne by the tooth tip 122 can be uniformly transmitted to the support body 11, which is conducive to improving the stability of the 3D printing support 1 and reducing the problem of tilting of the 3D printing part 2 or breaking of the 3D printing support 1 during printing.

[0037] For example, the angle of the tooth tip 122 is α, wherein 40°≤α≤50°. For example, α can be 40°, 45° or 50°. The inventors of the present application have found through experimental research that when the angle α of the tooth tip 122 is arranged in the above-mentioned angle, the stability of the 3D printing support 1 can be further improved, and the stress is more balanced.

[0038] Optionally, the thickness of the support sheet 111 is A, wherein 0.08mm≤A≤0.12mm. For example, the thickness A of the support sheet 111 is 0.08mm, 0.1mm or 0.12mm.

[0039] The length of the support sheet 111 is B, wherein 1.0mm≤B≤1.4mm. For example, the length B of the support sheet 111 is 1.0mm, 1.2mm or 1.4mm.

[0040] The height of the support sheet 111 is C, wherein 0.25mm≤C≤0.4mm. For example, the height C of the support sheet 111 is 0.25mm, 0.3mm, 0.35mm or 0.4mm.

[0041] The inventors of the present application have found through experimental research that when the thickness of the support sheet 111, the length of the support sheet 111 and the height of the support sheet 111 are arranged in the above-mentioned numerical ranges, the consumption of the support sheet 111 can be reduced on the basis of ensuring the bearing capacity of the support sheet 111.

[0042] Optionally, the angle between the two adjacent support sheets 111 is β, wherein 50°≤β≤70°. For example, the angle β between the two adjacent support sheets 111 can be 50°, 60° or 70°. For example, the support sheet 111 is three, and the three support sheets 111 are arranged in a rotating cross manner around the central axis of the support body 11, and the included angle between any two support sheets 111 is 60°, which can improve the stability of the 3D printing support 1 and reduce the waste of materials.

[0043] As shown in Figure 1 The 3D printing structure of another embodiment of the present application comprises: a 3D printing part 2 and a 3D printing support 1, the 3D printing support 1 is the 3D printing support 1 of the present application, and the 3D printing support 1 abuts against the 3D printing part 2 to support the 3D printing part 2.

[0044] According to the 3D printing structure of the embodiment of the utility model, since the support main body 11 is spaced apart from the 3D printed part 2 and the support points 121 are in point contact with the 3D printed part 2, the contact area of the 3D printing support part 1 and the 3D printed part 2 can be reduced, so that the 3D printing support part 1 can be conveniently removed from the 3D printed part 2, and since the plurality of support points 121 are arranged along the circumference of the support main body 11, the stability of the 3D printing support part 1 supporting the 3D printed part 2 can be improved, the problems such as collapse and deformation of the 3D printed part 2 during printing are reduced, and the quality and performance of the 3D printed part 2 are ensured.

[0045] Optionally, the 3D printed part 2 comprises an intervertebral fusion cage 21, and the intervertebral fusion cage 21 abuts against the support points 121 on the 3D printing support part 1. Figure 1 As shown in the figure, the intervertebral fusion cage 21 is provided with a 3D printed porous structure 211, and the porous structure 211 can provide mechanical support and promote biological fusion. The porous structure 211 forms a structure similar to a bone trabecula in the intervertebral fusion cage 21, which helps to reduce stress shielding and promote the growth of bone tissue and blood vessels, and improve the fusion rate.

[0046] In an example, the support points 121 at the lower end of the 3D printing support part 1 abut against the base plate 22, and the support points 121 at the upper end of the 3D printing support part 1 abut against the intervertebral fusion cage 21.

[0047] In another example, the support points 121 at the lower end of the 3D printing support part 1 abut against the upper end of one intervertebral fusion cage 21, and the support points 121 at the upper end of the 3D printing support part 1 abut against the lower end of another intervertebral fusion cage 21. In this way, a plurality of intervertebral fusion cages 21 can be printed in a stacked manner and spaced apart by the 3D printing support part 1, so as to improve the production efficiency of the 3D printed part 2 and realize batch production.

[0048] Specifically, the printing method of the 3D printing structure of the embodiment of the utility model is as follows:

[0049] S1: determining the forming direction of the 3D printed part 2;

[0050] S2: adding the 3D printing support part 1 at the lowest overhanging point of the 3D printed part 2;

[0051] S3: slicing the model of the 3D printing structure, and the slice layer thickness is 0.03mm;

[0052] S4: importing the model data after slicing into the 3D printer;

[0053] S5: the dried powder (powder particle size is 15-53 mu m) is loaded into the material cylinder of the printing equipment, the substrate 22 is leveled and preheated, argon is filled, and the 3D printing support 1 and the 3D printing piece 2 are printed in turn;

[0054] S6: the 3D printing support 1 is removed to obtain the 3D printing piece 2.

[0055] In summary, the 3D printing structure of the embodiment of the utility model has the following technical effects:

[0056] (1) reduce material waste, significantly reduce the consumables of the support structure;

[0057] (2) reduce subsequent processing cost, reduce the step of removing the support and labor cost, and reduce the overall manufacturing cost;

[0058] (3) it is beneficial to improve the surface quality of the 3D printing piece 2, and the influence of the support structure on the surface quality of the finished product is avoided;

[0059] (4) improve the printing efficiency of the 3D printing piece 2, optimize the printing parameters and path planning, improve the printing speed and efficiency, enhance the design freedom, and meet the high-precision printing requirements of complex geometric shapes and porous structures 211.

[0060] In the description of the utility model, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model.

[0061] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0062] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the specific meaning of above terms in the utility model according to specific circumstances.

[0063] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can be first and second features direct contact, or first and second features indirectly contact through intermediate medium.Moreover, first feature "over", "above" and "on" second feature, can be first feature directly above or obliquely above second feature, or just indicate that the horizontal height of first feature is higher than second feature.First feature "under", "below" and "under" second feature, can be first feature directly below or obliquely below second feature, or just indicate that the horizontal height of first feature is less than second feature.

[0064] In the utility model, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean 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 utility model.In the specification, the illustrative description 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.In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0065] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and the changes, modifications, replacements and variations of the above embodiments made by the ordinary skilled in the art are within the protection scope of the utility model.

Claims

1. A 3D printing support, characterized in that, The 3D printing support is used for supporting a 3D printing piece, and comprises a support body and a support part connected with each other, the support body is spaced apart from the 3D printing piece, and the support part comprises a plurality of support points, the plurality of support points are arranged along the circumference of the support body, and the support points are used for point contact with the 3D printing piece. The support body comprises a plurality of support pieces, the plurality of support pieces are arranged in sequence along the circumference of the central axis of the support body, and each support piece corresponds to at least one support point.

2. The 3D printing support according to claim 1, characterized in that, The support part is two, and the two support parts are arranged on opposite sides of the support body.

3. The 3D printing support of claim 1, wherein, The plurality of support pieces are parallel and pass through the central axis of the support body.

4. The 3D printing support of claim 1, wherein, The support part is a tooth tip, the tip end of the tooth tip extends away from the support body, and the tip end of the tooth tip constitutes the support point.

5. The 3D printing support of claim 4, wherein, The outer peripheral contour of the tooth tip is an isosceles triangle, and the apex angle of the isosceles triangle constitutes the tooth tip. And / or, the angle of the tooth tip is α, wherein 40°≤α≤50°.

6. The 3D printing support of claim 1, wherein, The thickness of the support piece is A, wherein 0.08mm≤A≤0.12mm. And / or, the length of the support piece is B, wherein 1.0mm≤B≤1.4mm. And / or, the height of the support piece is C, wherein 0.25mm≤C≤0.4mm.

7. The 3D printing support of claim 1, wherein, The angle between two adjacent support pieces is β, wherein 50°≤β≤70°.

8. A 3D printed structure, characterized in that, Comprise: A 3D printing piece; A 3D printing support, the 3D printing support is the 3D printing support in any one of claims 1-7, and the 3D printing support is in abutment with the 3D printing piece to support the 3D printing piece.

9. The 3D printed structure of claim 8, wherein, The 3D printing piece comprises an intervertebral fusion cage, and the intervertebral fusion cage is in abutment with the support point on the 3D printing support.

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