CN114474710A - 3D printing device and method - Google Patents
3D printing device and method Download PDFInfo
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- CN114474710A CN114474710A CN202111613263.6A CN202111613263A CN114474710A CN 114474710 A CN114474710 A CN 114474710A CN 202111613263 A CN202111613263 A CN 202111613263A CN 114474710 A CN114474710 A CN 114474710A
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- printing
- vibration
- platform
- printing platform
- vibration modes
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- 238000010146 3D printing Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007639 printing Methods 0.000 claims abstract description 45
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims description 19
- 230000008021 deposition Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/245—Platforms or substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a 3D printing device and a method, wherein the 3D printing device comprises: the printing platform is provided with a vibration device below and used for exciting two vibration modes of the printing platform, and particles on the surface of the printing platform generate elliptic motion through the superposition combination of the two vibration modes; according to the invention, the vibration device is connected with the printing platform, the particle on the surface of the printing platform generates micron-level elliptical motion by utilizing the inverse piezoelectric effect and the resonance effect, the porosity between fuses in fused deposition 3D printing is reduced under the condition of not influencing the printing process and the printing precision, and the performance of a printed part is improved.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a 3D printing device and a method.
Background
The fused deposition type 3d printer is a device for realizing manufacturing by lamination, a file format with path information is generated by digitalizing a workpiece and using special slicing software, the file is guided into the 3d printer, a printing head extrudes molten resin and stacks the molten resin according to a set path, and therefore rapid molding is realized.
Fused deposition 3D printing techniques primarily utilize the hot melt of thermoplastic materials (e.g., PLA, ABS, PA, PC, and PE, etc.) that are flowed through a nozzle assembly and formed layer-by-layer on a printing platform. Based on the principle of fuse accumulation, although rapid forming can be realized, the combination degree of the fuses is far lower than that of a printing material body, so that the performance of a printed product has defects, and the application of the technology is limited.
Disclosure of Invention
In order to solve the above problems, the present invention provides a 3D printing apparatus and method capable of reducing porosity and improving performance of a printed article.
In order to achieve the above object, the present 3D printing apparatus includes: the printing platform is characterized in that a vibration device is arranged below the printing platform and used for exciting two vibration modes of the printing platform, and particles on the surface of the printing platform generate elliptic motion through the superposition combination of the two vibration modes.
Preferably, the amplitude of the elliptical motion is 1-50 microns.
As a preferred technical scheme, the vibration device is a piezoelectric ceramic piece, and the vibration amplitude is controlled by controlling the input voltage of the piezoelectric ceramic piece.
Preferably, the vibration device is a langevin vibrator.
On the other hand, the invention also provides a 3D printing method, which comprises the following steps:
a vibration device is arranged below the printing platform;
and providing power for the vibration device to generate vibration, exciting two-phase vibration modes of the printing platform, and enabling the surface particles of the printing platform to generate elliptical motion through the superposition combination of the two-phase vibration modes.
In the 3D printing method, preferably, the vibration device is a piezoelectric ceramic plate, and the vibration amplitude is controlled by controlling an input voltage of the piezoelectric ceramic plate.
In the above 3D printing method, preferably, the amplitude of the elliptical motion is 1 to 50 micrometers.
In the 3D printing method, the vibrating device is preferably a langevin vibrator.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the vibration device is connected with the printing platform, the particle on the surface of the printing platform generates micron-level elliptical motion by utilizing the inverse piezoelectric effect and the resonance effect, the porosity between the fuses in fused deposition 3D printing is reduced under the condition of not influencing the printing process and the printing precision, and the performance of the printed part is improved.
In addition, the micron-level vibration generated on the surface of the printing platform can promote the fusion of the fuse wire in a molten state, the lower layer and the adjacent fuse wire, reduce the anisotropy degree in fused deposition 3D printing and improve the performance of printed products.
Drawings
Fig. 1 is a structural diagram of a 3D printing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of the fused deposition 3D printing direction;
fig. 3 is a structural diagram of a 3D printing apparatus according to another embodiment of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual scale relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion of it is not necessary in subsequent figures.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood, not simply by the actual terms used but by the meaning of each term lying within.
Example 1.
The common printing platform is applied, and the vibration of the platform is not excited.
Example 2
Referring to fig. 1 and 2, the present embodiment provides a 3D printing apparatus including: the printing platform comprises a printing platform 1, wherein two piezoelectric ceramics 2 are arranged below the printing platform 1, the two piezoelectric ceramics 2 are used for exciting two-phase vibration modes of the printing platform, and mass points on the surface of the printing platform generate elliptic motion through the superposition combination of the two-phase vibration modes. The vibration frequency is controlled by controlling the input voltage of the battery ceramic plate 3, in the embodiment, the effective value of the applied voltage is 40V, and the platform amplitude is 1 micron.
In fig. 2, X, Y, Z is a three-dimensional coordinate where Z is a vertical direction and P is a 3D printing stack forming direction.
It should be noted here that the vibration of the piezoelectric ceramic 2 excites two vibration modes of the platform (this is a standing wave, and the particles only make a linear motion at the equilibrium position) by the resonance effect, and based on the principle of wave superposition, two different vibration modes are superposed to obtain an elliptical motion of a traveling wave or an excited surface particle.
In addition, the piezoelectric ceramic 2 realizes a phase difference in space by a position, thereby realizing the synthesis of two-phase vibration modes, and the specific position needs to be calculated according to the shape, size and thickness of the plate. The specific position of the platform is not specifically limited, and the position of the two vibration modes of the platform is excited as long as the two vibration modes can be synthesized.
Example 3.
This embodiment is different from embodiment 2 in that four pieces of piezoelectric ceramics are installed below the printing stage, an effective value of voltage of 120V is applied, and the amplitude of the stage is 20 μm.
Example 4.
This example differs from example 2 in that four pieces of piezoelectric ceramics were mounted under the printing platen, an effective value of voltage of 250V was applied, and the platen amplitude was 50 μm.
The results of the experimental tests are shown in Table 1
TABLE 1
As can be seen from table 1, by mounting or adhering piezoelectric ceramics on a specific portion of the printing platform, a voltage is applied to the piezoelectric ceramics during printing to excite two-phase vibration modes of the platform, and by the superposition combination of the two-phase vibration modes, mass points on the surface of the platform generate a micro-elliptical motion, which promotes better adhesion between a fuse extruded by the printing head and a lower layer and adjacent fuses (cooled), reduces gaps between stacked fuses, and improves mechanical properties of printed parts.
Example 5
The embodiment provides a 3D printing method, which specifically includes the following steps:
And 2, providing power for the vibration device to generate vibration, exciting two vibration modes of the printing platform, and enabling mass points on the surface of the printing platform to generate elliptical motion through the superposition combination of the two vibration modes.
It should be noted that the vibration device realizes a phase difference in space by a position, so as to synthesize two-phase vibration modes, and the specific position needs to be calculated according to the size, shape and thickness of the plate. The specific position of the invention is not specifically shown, as long as the two-phase vibration mode can be synthesized so as to excite the positions of the two vibration modes of the platform, which are within the protection scope of the invention.
It should be noted that the above embodiments adopt different forms of piezoelectric ceramics, including using piezoelectric ceramics and langevin vibrators directly. However, it is obvious to those skilled in the art that other ways can be selected without departing from the design method, including but not limited to the piezoelectric stack as shown in fig. 3, where 3 is an oblique slot on the piezoelectric vibrator, and these options should be considered as the protection scope of the present invention.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present invention in the specification and drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A3D printing device, comprising: the printing platform is characterized in that a vibration device is arranged below the printing platform and used for exciting two-phase vibration modes of the printing platform, and particles on the surface of the printing platform generate elliptic motion through the superposition combination of the two-phase vibration modes.
2. The 3D printing device according to claim 1, characterized in that: the amplitude of the elliptical motion is in the range of 1-50 microns.
3. The 3D printing device according to claim 1, characterized in that: the vibration device is a piezoelectric ceramic piece, and the vibration amplitude is controlled by controlling the input voltage of the piezoelectric ceramic piece.
4. The 3D printing device according to claim 1, characterized in that: the vibration device is a Langewen vibrator.
5. A3D printing method is characterized by comprising the following steps:
a vibration device is arranged below the printing platform;
and providing power for the vibration device to generate vibration, exciting two-phase vibration modes of the printing platform, and enabling the surface particles of the printing platform to generate elliptical motion through the superposition combination of the two-phase vibration modes.
6. The 3D printing method according to claim 5, characterized in that: the vibration device is a piezoelectric ceramic piece, and the vibration amplitude is controlled by controlling the input voltage of the piezoelectric ceramic piece.
7. The 3D printing method according to claim 5, characterized in that: the amplitude of the elliptical motion is in the range of 1-50 microns.
8. The 3D printing method according to claim 5, characterized in that: the vibration device is a Langewen vibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111613263.6A CN114474710A (en) | 2021-12-27 | 2021-12-27 | 3D printing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111613263.6A CN114474710A (en) | 2021-12-27 | 2021-12-27 | 3D printing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114474710A true CN114474710A (en) | 2022-05-13 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111613263.6A Pending CN114474710A (en) | 2021-12-27 | 2021-12-27 | 3D printing device and method |
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| Country | Link |
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| CN (1) | CN114474710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114851547A (en) * | 2022-04-15 | 2022-08-05 | 南京航空航天大学 | 3D printing device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042628A (en) * | 2017-04-26 | 2017-08-15 | 广东工业大学 | A kind of FDM type 3D printing platforms of ultrasonic wave added vibration |
-
2021
- 2021-12-27 CN CN202111613263.6A patent/CN114474710A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042628A (en) * | 2017-04-26 | 2017-08-15 | 广东工业大学 | A kind of FDM type 3D printing platforms of ultrasonic wave added vibration |
Non-Patent Citations (1)
| Title |
|---|
| 王西彬等: "《特种电动机调速控制技术及应用》", 北京理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114851547A (en) * | 2022-04-15 | 2022-08-05 | 南京航空航天大学 | 3D printing device and method |
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Application publication date: 20220513 |