CN112008977A - Micro-vibration assisted 3D printing device - Google Patents
Micro-vibration assisted 3D printing device Download PDFInfo
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- CN112008977A CN112008977A CN202010822982.8A CN202010822982A CN112008977A CN 112008977 A CN112008977 A CN 112008977A CN 202010822982 A CN202010822982 A CN 202010822982A CN 112008977 A CN112008977 A CN 112008977A
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- base body
- piezoelectric ceramic
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- 238000010146 3D printing Methods 0.000 title claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 41
- 238000006073 displacement reaction Methods 0.000 claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000007639 printing Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 230000004083 survival effect Effects 0.000 description 4
- 230000003833 cell viability Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000003255 drug test Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering 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
- 230000001575 pathological effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
-
- 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
- B29C64/30—Auxiliary operations or equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a micro-vibration assisted 3D printing device which comprises a substrate, wherein the inner wall of the substrate is fixedly connected with a micro-displacement table through a flexible hinge, one side of the substrate is fixedly connected with one end of a first piezoelectric ceramic promoter, the other side of the substrate is fixedly connected with one end of a second piezoelectric ceramic promoter, and the other side of the substrate is fixedly connected with one end of a third piezoelectric ceramic promoter. This supplementary 3D printing device of micro-vibration, switch through controlling different piezoceramics promoters, can constitute six kinds of different vibration modes, first piezoceramics promoter is vertical to be located base member one side, second piezoceramics promoter level is located base member one side, third piezoceramics promoter level is located base member one side, the displacement of three direction is exported respectively, pretension mutual noninterference, the pretension is simple reliable, make the micro-displacement platform can realize one-dimensional, two-dimentional, three-dimensional vibration, can make the frequency, the phase place, parameters such as amplitude are adjusted according to particular case, the micro-displacement platform drives the needle tubing vibration.
Description
Technical Field
The invention relates to the technical field of 3D biological printing, in particular to a micro-vibration assisted 3D printing device.
Background
Biological 3D printing technology has attracted attention in recent years, and is widely used in tissue engineering and regenerative medicine, drug testing, pathological models, etc., generally, high viscosity bio-ink requires high pressure to print through a micro nozzle, and generates great wall shear stress during printing, and the pressure causes cell viability to decrease, thereby resulting in low survival rate of printed tissue cells, and the shear stress applied to cells is low during printing due to low material viscosity, thereby obtaining sufficient cell viability, but this method is only suitable for cells that can adapt to low viscosity bio-ink, and for specific cells, high viscosity bio-ink still needs to be used, and a printing method using a large diameter nozzle directly reduces shear stress during printing to improve cell viability without being limited by cell types, but using a nozzle with a larger diameter reduces printing resolution, in view of these defects, it is necessary to design a micro-vibration assisted 3D printing apparatus.
Disclosure of Invention
The invention aims to provide a micro-vibration assisted 3D printing device, wherein a micro-displacement platform can realize X, Y, Z translational motion in three directions, six different vibration modes can be formed by controlling switches of different piezoelectric ceramic promoters, a first piezoelectric ceramic promoter is vertically positioned at one side of a substrate, a second piezoelectric ceramic promoter is horizontally positioned at one side of the substrate, a third piezoelectric ceramic promoter is horizontally positioned at one side of the substrate, the displacements in the three directions are respectively output, pre-tightening is not interfered with each other, pre-tightening is simple and reliable, so that the micro-displacement platform can realize one-dimensional, two-dimensional and three-dimensional vibration, parameters such as frequency, phase, amplitude and the like can be adjusted according to specific conditions, the micro-displacement platform drives a needle tube to vibrate, and as biological ink has the characteristic of shear thinning, namely, most of the biological ink is high-molecular colloidal particles formed by huge chain-shaped molecules, when the biological ink is in low flow rate or, because colloidal particle entangles each other, viscosity is great, and during the velocity of flow grow, these chain-like particles are because can receive the shear stress effect between the STREAMING, mutual hook has been reduced, can take place to roll rotatory and then shrink into a group, make viscosity reduce, the addition of multidimension degree vibration can make biological ink increase at the shearing force between the printing in-process STREAMING, lead to biological ink's viscosity to reduce, wall shearing force reduces when extruding, and then cell survival rate obtains promoting, can solve the problem among the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a micro-vibration assisted 3D printing device comprises a base body, wherein the inner wall of the base body is fixedly connected with a micro-displacement table through a flexible hinge, one side of the base body is fixedly connected with one end of a first piezoelectric ceramic promoter, the other end of the base body is meshed with a first fixing cover through threads, the other side of the base body is fixedly connected with one end of a second piezoelectric ceramic promoter, the other end of the base body is meshed with a second fixing cover through threads, the other side of the base body is fixedly connected with one end of a third piezoelectric ceramic promoter, and the other end of the base body is meshed with a rear cover plate through;
the first fixing cover is fixedly connected with the base body through a bolt, the second fixing cover is fixedly connected with the base body through a bolt, the rear cover plate is fixedly connected with the base body through a bolt, the micro-displacement table is fixedly connected with the outer sleeve through a bolt, the outer sleeve is fixedly connected with the inner sleeve through locking screws respectively, the inner sleeve is provided with dismounting screw holes respectively, and the dismounting screw holes are meshed with the dismounting screws through threads;
the outer sleeve, the inner sleeve, the locking screw and the dismounting screw form an expansion connecting component, the outer sleeve and the inner sleeve are respectively sleeved on the outer wall of the needle tube, and the inner sleeve is in expansion connection with the needle tube through the locking screw.
Preferably, the substrate is a rectangular frame, and the micro-displacement table is located at the center position in the rectangular frame.
Preferably, the first piezoelectric ceramic promoter is vertically positioned on one side of the substrate, the second piezoelectric ceramic promoter is horizontally positioned on one side of the substrate, and the third piezoelectric ceramic promoter is horizontally positioned on one side of the substrate.
Preferably, the second and third piezo ceramic promoters are perpendicular to each other.
Preferably, the periphery of the rear cover plate is fixedly connected with the printer through bolts.
Compared with the prior art, the invention has the following beneficial effects:
the micro-vibration assisted 3D printing device comprises a rectangular framework, a micro-displacement table, a flexible hinge, a first piezoelectric ceramic promoter, a second piezoelectric ceramic promoter, a third piezoelectric ceramic promoter and a fourth piezoelectric ceramic promoter, wherein the base body is a rectangular framework, the micro-displacement table is positioned at the central position in the rectangular framework, the micro-displacement table can realize translation in X, Y, Z three directions, six different vibration modes can be formed by controlling the switches of the different piezoelectric ceramic promoters, the base body and the micro-displacement table form a vibration part, the flexible hinge is designed, the cross section of the flexible hinge is rectangular, the whole size is small, vibration can be effectively transmitted, integrated processing is adopted, assembly is not needed, no friction loss exists, the whole structure of the device is simple, and convenient to install, Two-dimensional and three-dimensional vibration can enable parameters such as frequency, phase, amplitude and the like to be adjusted according to specific conditions, the micro-displacement platform drives the needle tube to vibrate, the inner sleeve is connected with the needle tube in an expansion mode through the locking screw, the needle tube, the inner sleeve and the outer sleeve can be disassembled through the disassembling screw, the strength is high, the connection is stable and reliable, the disassembly and the assembly are convenient, as the bio-ink has the characteristic of shear thinning, namely, most of the bio-ink are high-molecular colloidal particles formed by huge chain-shaped molecules, when the flow rate is low or static, because the colloidal particles are mutually entangled, the viscosity is higher, and when the flow rate is increased, the chain-shaped particles can be subjected to the shear stress action between flow layers, the mutual hooks are reduced, the rolling rotation can be generated, the viscosity is reduced, and the addition of multi-dimensional vibration can increase the shear force between the flow layers in the printing process of, the shearing force of the wall surface is reduced during extrusion, and the survival rate of cells is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a back cover plate and a third piezoceramic facilitator of the present invention;
FIG. 3 is a schematic view of a substrate and a micro-displacement stage according to the present invention;
FIG. 4 is a schematic view of the expansion joint of the present invention;
fig. 5 is a profile of a locking screw and a removal screw hole of the present invention.
In the figure: 1. a rear cover plate; 2. a substrate; 3. a micro-displacement stage; 41. a jacket; 42. an inner sleeve; 43. locking the screw; 44. disassembling the screw; 45. disassembling the screw hole; 5. a needle tube; 61. a first piezoelectric ceramic facilitator; 62. a second piezoelectric ceramic facilitator; 63. a third piezoelectric ceramic facilitator; 71. a first fixed cover; 72. a second stationary cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.
Referring to fig. 1-5, a micro-vibration assisted 3D printing apparatus includes a substrate 2, the substrate 2 is a rectangular frame, a micro-displacement table 3 is located at the center of the rectangular frame, the micro-displacement table 3 can achieve X, Y, Z translational movements, six different vibration modes can be formed by controlling the switches of different piezoelectric ceramic promoters, the inner wall of the substrate 2 is fixedly connected with the micro-displacement table 3 through a flexible hinge, the cross section of the flexible hinge is rectangular, the substrate 2 and the micro-displacement table 3 form a vibration component, the flexible hinge is designed to have a small overall volume, can effectively transmit vibration, adopts integral processing, does not need assembly, has no friction loss, has a simple overall structure and is convenient to install, one side of the substrate 2 is fixedly connected with one end of a first piezoelectric ceramic promoter 61, the other end is engaged with a first fixing cover 71 through a screw thread, the other side of the substrate 2 is fixedly connected with one end of a second piezoelectric ceramic promoter 62, the other end is meshed with a second fixed cover 72 through threads, the other side of the base body 2 is fixedly connected with one end of a third piezoelectric ceramic promoter 63, the other end is meshed with the rear cover plate 1 through threads, the second piezoelectric ceramic promoter 62 is vertical to the third piezoelectric ceramic promoter 63, a first fixed cover 71 is fixedly connected with the base body 2 through bolts, a second fixed cover 72 is fixedly connected with the base body 2 through bolts, the first piezoelectric ceramic promoter 61 is vertically positioned on one side of the base body 2, the second piezoelectric ceramic promoter 62 is horizontally positioned on one side of the base body 2, the third piezoelectric ceramic promoter 63 is horizontally positioned on one side of the base body 2, and displacements in three directions are respectively output, pre-tightening is not interfered with each other, pre-tightening is simple and reliable, so that the micro-displacement table 3 can realize one-dimensional, two-dimensional and three-dimensional vibration, parameters such as frequency, phase, amplitude and the like can be adjusted according to specific conditions, the micro, the rear cover plate 1 is fixedly connected with the base body 2 through bolts, the periphery of the rear cover plate 1 is fixedly connected with a printer through bolts, the micro-displacement platform 3 is fixedly connected with the outer sleeve 41 through bolts, the outer sleeve 41 is fixedly connected with the inner sleeve 42 through locking screws 43, the inner sleeve 42 is provided with dismounting screw holes 45, the dismounting screw holes 45 are meshed with the dismounting screws 44 through threads, the outer sleeve 41, the inner sleeve 42, the locking screws 43 and the dismounting screws 44 form an expansion connecting component, the taper angle of the outer conical surface of the inner sleeve 42 and the taper angle of the inner conical surface of the outer sleeve 41 are 10 degrees, the outer sleeve 41 and the inner sleeve 42 are respectively sleeved on the outer wall of the needle tube 5, the inner sleeve 42 is connected with the needle tube 5 through the locking screws 43 in an expansion mode, the needle tube 5, the inner sleeve 42 and the.
In conclusion, in the micro-vibration assisted 3D printing device, the substrate 2 is a rectangular frame body, the micro-displacement table 3 is located at the central position in the rectangular frame body, the micro-displacement table 3 can realize X, Y, Z translational motions in three directions, six different vibration modes can be formed by controlling the switches of different piezoelectric ceramic promoters, the substrate 2 and the micro-displacement table 3 form a vibration part, the flexible hinge is designed, the cross section of the flexible hinge is rectangular, the whole size is small, vibration can be effectively transmitted, integrated processing is adopted, assembly is not needed, no friction loss exists, the device is simple in overall structure and convenient to install, the first piezoelectric ceramic promoter 61 is vertically located at one side of the substrate 2, the second piezoelectric ceramic promoter 62 is horizontally located at one side of the substrate 2, the third piezoelectric ceramic promoter 63 is horizontally located at one side of the substrate 2, displacements in three directions are respectively output, and pre-tightening is not interfered with, the pre-tightening is simple and reliable, the micro-displacement platform 3 can realize one-dimensional, two-dimensional and three-dimensional vibration, parameters such as frequency, phase and amplitude can be adjusted according to specific conditions, the micro-displacement platform 3 drives the needle tube 5 to vibrate, the inner sleeve 42 is tightly connected with the needle tube 5 through the locking screw 43, the needle tube 5, the inner sleeve 42 and the outer sleeve 41 can be disassembled through the disassembling screw 44, the strength is high, the connection is stable and reliable, and the disassembly and the assembly are convenient, because the bio-ink has the characteristic of shear thinning, namely, most of the bio-ink is high molecular colloidal particles formed by huge chain molecules, when the flow rate is high and the flow rate is high, because the colloidal particles are mutually entangled, the viscosity is high, when the flow rate is high, the chain particles can be subjected to the shear stress action between flow layers, the mutual hooking is reduced, the rolling rotation can be generated, the rolling rotation can be further contracted into a group, the viscosity is reduced, and the addition of, the viscosity of the biological ink is reduced, the wall shear force is reduced during extrusion, and the cell survival rate is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A micro-vibration assisted 3D printing device comprises a substrate (2), and is characterized in that: the inner wall of the base body (2) is fixedly connected with the micro-displacement platform (3) through a flexible hinge, one side of the base body (2) is fixedly connected with one end of a first piezoelectric ceramic promoter (61), the other end of the base body is meshed with a first fixing cover (71) through threads, the other side of the base body (2) is fixedly connected with one end of a second piezoelectric ceramic promoter (62), the other end of the base body is meshed with a second fixing cover (72) through threads, the other side of the base body (2) is fixedly connected with one end of a third piezoelectric ceramic promoter (63), and the other end of the base body is meshed with the rear cover plate (1) through threads;
the first fixing cover (71) is fixedly connected with the base body (2) through a bolt, the second fixing cover (72) is fixedly connected with the base body (2) through a bolt, the rear cover plate (1) is fixedly connected with the base body (2) through a bolt, the micro-displacement table (3) is fixedly connected with the outer sleeve (41) through a bolt, the outer sleeve (41) is fixedly connected with the inner sleeve (42) through a locking screw (43), the inner sleeve (42) is provided with a dismounting screw hole (45), and the inside of the dismounting screw hole (45) is meshed with the dismounting screw (44) through a thread;
the outer sleeve (41), the inner sleeve (42), the locking screw (43) and the dismounting screw (44) form an expansion connecting component, the outer sleeve (41) and the inner sleeve (42) are respectively sleeved on the outer wall of the needle tube (5), and the inner sleeve (42) is in expansion connection with the needle tube (5) through the locking screw (43).
2. A micro-vibration assisted 3D printing device according to claim 1, wherein: the base body (2) is a rectangular frame body, and the micro displacement table (3) is located in the center of the rectangular frame body.
3. A micro-vibration assisted 3D printing device according to claim 1, wherein: the first piezoelectric ceramic promoter (61) is vertically positioned on one side of the base body (2), the second piezoelectric ceramic promoter (62) is horizontally positioned on one side of the base body (2), and the third piezoelectric ceramic promoter (63) is horizontally positioned on one side of the base body (2).
4. A micro-vibration assisted 3D printing device according to claim 1, wherein: the second piezoceramic promoters (62) and the third piezoceramic promoters (63) are perpendicular to each other.
5. A micro-vibration assisted 3D printing device according to claim 1, wherein: the periphery of the rear cover plate (1) is fixedly connected with the printer through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822982.8A CN112008977A (en) | 2020-08-17 | 2020-08-17 | Micro-vibration assisted 3D printing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822982.8A CN112008977A (en) | 2020-08-17 | 2020-08-17 | Micro-vibration assisted 3D printing device |
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| CN112008977A true CN112008977A (en) | 2020-12-01 |
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| CN202010822982.8A Pending CN112008977A (en) | 2020-08-17 | 2020-08-17 | Micro-vibration assisted 3D printing device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725999A (en) * | 2017-01-12 | 2017-05-31 | 吉林大学 | The anti-blocking multicellular organism increasing material manufacturing method and device of high-precision ultrasound |
| DE102017120750A1 (en) * | 2017-09-08 | 2019-03-14 | Technische Universität Chemnitz | Device and method for producing a component by means of 3D multi-material printing and manufactured component |
| CN109550982A (en) * | 2019-01-28 | 2019-04-02 | 大连交通大学 | The three-dimensional elliptical vibration cutting device of Space Curved-Beam |
-
2020
- 2020-08-17 CN CN202010822982.8A patent/CN112008977A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725999A (en) * | 2017-01-12 | 2017-05-31 | 吉林大学 | The anti-blocking multicellular organism increasing material manufacturing method and device of high-precision ultrasound |
| DE102017120750A1 (en) * | 2017-09-08 | 2019-03-14 | Technische Universität Chemnitz | Device and method for producing a component by means of 3D multi-material printing and manufactured component |
| CN109550982A (en) * | 2019-01-28 | 2019-04-02 | 大连交通大学 | The three-dimensional elliptical vibration cutting device of Space Curved-Beam |
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Application publication date: 20201201 |
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