CN107127971A - A kind of photocuring extrusion shower nozzle in situ - Google Patents
A kind of photocuring extrusion shower nozzle in situ Download PDFInfo
- Publication number
- CN107127971A CN107127971A CN201710475564.4A CN201710475564A CN107127971A CN 107127971 A CN107127971 A CN 107127971A CN 201710475564 A CN201710475564 A CN 201710475564A CN 107127971 A CN107127971 A CN 107127971A
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- China
- Prior art keywords
- translucent
- transparent
- tubule
- light source
- photocuring
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Classifications
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- 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
Abstract
The invention discloses a kind of photocuring in situ extrusion shower nozzle, including shell and the liquid room, transparent/translucent tubule, light source and the shadow shield that are arranged in shell；Wherein, transparent/translucent tubule is connected with liquid room, light source vertical irradiation is on transparent/translucent tubule, light source is arranged in the circumference of transparent/translucent tubule, for vertical irradiation in transparent/translucent tubule, and shadow shield is arranged between light source and liquid room, during work, liquid photocurable material is provided with liquid room, liquid photocurable material is by transparent/translucent tubule, and the ultraviolet light solidify afterwards formation solid filament sent through light source is extruded.Photocuring in situ refers to carry out photocuring reaction in shower nozzle, it is possible to achieve input liquid photocurable material, and directly prints solid filament.The transparent/translucent tubule being sized substantially increases the size range of printing filament, it is ensured that the dimensional accuracy of extrusion filament.
Description
Technical field
The invention belongs to photocuring 3D printing and 3D biometric prints field, and in particular to a kind of photocuring extrusion spray in situ
Head.
Background technology
Traditional extruded type 3D printing raw material are solid filaments, after shower nozzle heating and melting extrude, it is difficult to using solution as
Material carries out extrusion molding.In biometric print field, hydrogel material is widely used.In order to solve photocuring hydrogel because of viscosity
Low the problem of be difficult to complete extrusion molding, the solution that the printing of existing photocuring is mainly used includes：First, by pre-paying
Connection improves the viscosity of material before printing, to adapt to extrusion printing.But the precrosslink process of this method is difficult to control to, crosslinking degree not
Uniformly.Second, printing is extruded after photo-curing material is mixed with big viscosity material.But the filament size of this method extrusion is big, into
Shape low precision, and big viscosity material can change the biocompatibility of original photo-curing material.3rd, utilize the side of inkjet printing
Formula prints single droplet coalescence formation structure.But this method needs rapid illumination after printing, solidification can influence shaping not in time
Precision.
The content of the invention
The invention aims to overcome the above not enough, there is provided a kind of in-situ solidifying extrusion shower nozzle.
To reach above-mentioned purpose, the present invention adopts the following technical scheme that to realize：
A kind of photocuring in situ extrusion shower nozzle, including shell and the liquid room that is arranged in shell, transparent/translucent are thin
Pipe, light source and shadow shield；Wherein,
Transparent/translucent tubule is connected with liquid room, and light source is arranged in the circumference of transparent/translucent tubule, for vertical
It is radiated on transparent/translucent tubule, shadow shield is arranged between light source and liquid room；During work, liquid light is provided with liquid room
Curing materials, liquid photocurable material is by transparent/translucent tubule, and the ultraviolet light solidify afterwards sent through light source form solid
State filament is extruded.
Further improve of the invention is, charging aperture is provided with the top of liquid room, liquid photocurable material is by charging aperture
Liquid room is sent into by the form of syringe pump or air pressure.
Further improve of the invention is that transparent/translucent tubule is made of polytetrafluoroethylene (PTFE) or glass.
Further improve of the invention is that the size of solid filament is ensured by the internal diameter size of transparent/translucent tubule,
Size range is at 60 μm -2000 μm.
Further improve of the invention is that light source uses single spot light, multiple spot lights or annular light source.
Further improve of the invention is, in addition to external control circuit, the intensity of illumination for adjusting light source.
Further improve of the invention is, in addition to printing substrate, and solid filament finally falls on printing substrate.
The present invention has the advantage that：
A kind of photocuring extrusion shower nozzle in situ that the present invention is provided, including liquid room, transparent/translucent tubule, light source, shading
Plate and shell；Wherein, transparent/translucent tubule is connected with liquid room, and light source vertical irradiation is on transparent/translucent tubule, liquid room
In liquid photocurable material pass through transparent/translucent tubule, in transparent/translucent tubule by the setting position of ultraviolet light
On, liquid photocurable material can gradually become semi-solid preparation material and ultimately form solid filament.When being extruded, material is thin in solid-state
It is thread.Wherein, transparent/translucent characteristic ensure that ultraviolet light can make the material solidification in pipe through tube wall.This solidification side
Formula ensure that the filament size after solidification can manual control completely because the size of solid filament is complete by transparent/translucent
The internal diameter size of tubule determines, can thus extrude size range very big filament, substantially increase the application of printing,
And overcome the problem of photo-curing material forming accuracy difference.Relative to existing forming technique, photocuring in situ can realize liquid light
Curing materials solidified forming in extrusion, is a kind of new 3D printing forming mode so as to print solid filament.
Further, liquid photocurable material sends into liquid room by charging aperture by the form of syringe pump or air pressure.Pass through regulation
The flow velocity of syringe pump or the size of air pressure, the speed that can set material are extruded from transparent/translucent tubule.
Further, transparent/translucent tubule is fabricated by by polytetrafluoroethylene (PTFE) or other hydrophobic materials, can also pass through glass
Etc. non-hydrophobic material, inwall is made after hydrophobic treatment.Transparent/translucent characteristic ensure that ultraviolet light can be through pipe
Wall makes the material solidification in pipe.
Further, the size of solid filament by transparent/translucent tubule internal diameter size ensure, size range 60 μm-
2000μm。
Further, light source can use single spot light, multiple spot lights or annular light source.It is radiated at transparent/semi-transparent
The setting position of detailed pipe, its intensity of illumination can be set by external control circuit to be changed.Variable intensity of illumination ensures material
The curing degree of needs is reached in transparent/translucent tubule.
Further, shadow shield is arranged between light source and liquid room, it is ensured that ultraviolet light is only radiated at transparent/translucent tubule
Set position.
Further, shell encapsulates overall structure, and charging aperture is left in upper end, and the end of transparent/translucent tubule is left in lower end
End, it is ensured that photocuring reaction also avoids ultraviolet light from leaking pollution environment not by external interference.Encapsulation design also makes shower nozzle to install
In any 3D printing motion platform.
In summary, a kind of photocuring extrusion shower nozzle in situ proposed by the present invention.It is realized with liquid photocurable material
The technology of solid filament is printed, the size range and printing precision of printing filament is substantially increased.
Brief description of the drawings
Fig. 1 is photocuring extrusion shower nozzle explosive view in situ.
Fig. 2 is photocuring extrusion shower nozzle sectional view in situ.
Fig. 3 is Fig. 2 partial enlarged drawing.
In figure：1 is shell, and 2 be liquid room, and 3 be transparent/translucent tubule, and 4 be shadow shield, and 5 be light source, and 6 be ultraviolet light, 7
It is printing substrate for solid filament, 8,9 be charging aperture, and 10 be liquid photocurable material, and 11 be semi-solid preparation material.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in figure 1, photocuring extrusion shower nozzle in situ proposed by the present invention, first, photocuring in situ refers in shower nozzle
Carry out photocuring reaction, it is possible to achieve input liquid photocurable material, print solid filament.Secondly, be sized it is transparent/
Translucent tubule ensure that the dimensional accuracy of extrusion filament.3rd, shell encapsulates nozzle structure, makes photocuring reaction in shower nozzle
Not by ectocine, ultraviolet light will not also leak pollution environment.
Specifically, the present invention is divided into following components：Liquid room 2, transparent/translucent tubule 3, light source 5, shadow shield 4
And shell 1；Wherein, transparent/translucent tubule 3 is connected with liquid room 2, and the vertical irradiation of light source 5 is on transparent/translucent tubule 3, liquid
Liquid photocurable material 10 in room 2 is by transparent/translucent tubule 3, and the ultraviolet light 6 sent through light source 5 irradiates solidify afterwards shape
Into solid filament 7, it is extruded from the end of transparent/translucent tubule 3.
As shown in Figures 2 and 3, liquid photocurable material 10 sends into liquid room by charging aperture 9 by the form of syringe pump or air pressure
2, meanwhile, the flow velocity of syringe pump or the size of air pressure determine the speed for extruding filament, generally, by adjusting syringe pump
Flow velocity or air pressure size, set constant extruded velocity.
Transparent/translucent tubule 3 needs to ensure that material can solidify, and is not bound on tube wall and blocks soft after solidifying
Pipe.Therefore, transparent/translucent characteristic ensure that ultraviolet light can make through tube wall, the material solidification in pipe.Transparent/translucent
Tubule 3 is fabricated by by polytetrafluoroethylene (PTFE) or other hydrophobic materials, it is possible to use the non-hydrophobic material such as glass, and inwall is by hydrophobic
It is made after processing, hydrophobic tube wall makes material be difficult to be bonded on tube wall.The size of solid filament 7 is by transparent/translucent tubule 3
Internal diameter size determine, its internal diameter size scope is at 60 μm -2000 μm.
Light source 5 can use single spot light, multiple spot lights or annular light source.It is radiated at transparent/translucent tubule 3
Setting position.Intensity of illumination can be set by external circuit to be changed, so as to ensure under different rates of extrusion, transparent/translucent
Material in tubule 3 can reach the curing degree of needs, specifically because when light intensity is not enough, material solidification is endless
Entirely, extrusion is liquid or solidliquid mixture；When light intensity is excessive, material can be made to cross solidification, influence mechanical performance.Intensity of illumination is needed
To match while material solidification speed is considered with extruded velocity.
Shadow shield 4 is arranged between light source 5 and liquid room 2, it is ensured that ultraviolet light 6 is only radiated at setting for transparent/translucent tubule 3
Determine position, there need not be the place of illumination without leaking into other.
On the setting position that transparent/translucent tubule 3 is irradiated by ultraviolet light 6, liquid photocurable material 10 can gradually become
For semi-solid preparation material 11 and ultimately form solid filament 7.When being extruded, material is in the shape of solid filament 7.
Shell 1 encapsulates overall structure, only stays the end of upper end charging aperture 9 and lower end transparent/translucent tubule 3, it is ensured that
Photocuring reaction also avoids ultraviolet light from leaking pollution environment not by external interference.Encapsulation design also makes shower nozzle be mountable to appoint
Meaning 3D printing motion platform.
Case study on implementation：
Material selection 5% (w/v) GelMA photo-curing materials, syringe pump is feeder apparatus, and flow set is 7 μ L/min, thoroughly
Bright/translucent tubule selects internal diameter 0.3mm, external diameter 0.6mm translucent polyfluortetraethylene pipe.Using wavelength 365nm double light
Source, intensity of illumination is 100mW/cm2.The sustainable GelMA filaments for printing a diameter of 0.3mm.
Claims (7)
1. a kind of photocuring extrusion shower nozzle in situ, it is characterised in that including shell (1) and the liquid room being arranged in shell (1)
(2), transparent/translucent tubule (3), light source (5) and shadow shield (4)；Wherein,
Transparent/translucent tubule (3) is connected with liquid room (2), and light source (5) is arranged in the circumference of transparent/translucent tubule (3),
For vertical irradiation in transparent/translucent tubule (3), shadow shield (4) is arranged between light source (5) and liquid room (2)；Work
When, liquid photocurable material (10) is provided with liquid room (2), liquid photocurable material (10) passes through transparent/translucent tubule
(3) ultraviolet light (6) the irradiation solidify afterwards formation solid filament (7), sent through light source (5) is extruded.
2. a kind of photocuring extrusion shower nozzle in situ according to claim 1, it is characterised in that the top of liquid room (2) is set
There is charging aperture (9), liquid photocurable material (10) sends into liquid room (2) by charging aperture (9) by the form of syringe pump or air pressure.
3. a kind of photocuring extrusion shower nozzle in situ according to claim 1, it is characterised in that transparent/translucent tubule (3)
It is made of polytetrafluoroethylene (PTFE) or glass.
4. a kind of photocuring extrusion shower nozzle in situ according to claim 1, it is characterised in that the size of solid filament (7)
Ensure that size range is at 60 μm -2000 μm by the internal diameter size of transparent/translucent tubule (3).
5. a kind of photocuring extrusion shower nozzle in situ according to claim 1, it is characterised in that light source (5) uses a single point
Light source, multiple spot lights or annular light source.
6. a kind of photocuring extrusion shower nozzle in situ according to claim 5, it is characterised in that also including outside control electricity
Road, the intensity of illumination for adjusting light source (5).
7. a kind of photocuring extrusion shower nozzle in situ according to claim 1, it is characterised in that also including printing substrate (8),
Solid filament (7) finally falls on printing substrate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475564.4A CN107127971A (en) | 2017-06-21 | 2017-06-21 | A kind of photocuring extrusion shower nozzle in situ |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475564.4A CN107127971A (en) | 2017-06-21 | 2017-06-21 | A kind of photocuring extrusion shower nozzle in situ |
Publications (1)
| Publication Number | Publication Date |
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| CN107127971A true CN107127971A (en) | 2017-09-05 |
Family
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Family Applications (1)
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| CN201710475564.4A Pending CN107127971A (en) | 2017-06-21 | 2017-06-21 | A kind of photocuring extrusion shower nozzle in situ |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018165761A1 (en) * | 2017-03-15 | 2018-09-20 | Aspect Biosystems Ltd. | Systems and methods for printing a fiber structure |
| CN109732923A (en) * | 2019-01-02 | 2019-05-10 | 浙江大学 | A kind of pre- photocuring formula extrusion 3D printing spray head towards a variety of light-sensitive materials |
| CN110101448A (en) * | 2019-04-22 | 2019-08-09 | 西安交通大学 | A kind of photocuring hydrogel conveying device for Minimally Invasive Surgery and Method of printing in situ |
| CN111169008A (en) * | 2020-03-03 | 2020-05-19 | 曹林 | 3D printing nozzle |
| US11833820B2 (en) | 2020-11-12 | 2023-12-05 | Laser Engineering & Development Itd. | Printer nozzle structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863798A (en) * | 2017-02-16 | 2017-06-20 | 浙江大学 | A kind of 3D printing shower nozzle |
-
2017
- 2017-06-21 CN CN201710475564.4A patent/CN107127971A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863798A (en) * | 2017-02-16 | 2017-06-20 | 浙江大学 | A kind of 3D printing shower nozzle |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018165761A1 (en) * | 2017-03-15 | 2018-09-20 | Aspect Biosystems Ltd. | Systems and methods for printing a fiber structure |
| US11724450B2 (en) | 2017-03-15 | 2023-08-15 | Aspect Biosystems Ltd. | Systems and methods for printing a fiber structure |
| CN109732923A (en) * | 2019-01-02 | 2019-05-10 | 浙江大学 | A kind of pre- photocuring formula extrusion 3D printing spray head towards a variety of light-sensitive materials |
| CN109732923B (en) * | 2019-01-02 | 2024-03-12 | 浙江大学 | Pre-photo-curing type extrusion 3D printing spray head for various photosensitive materials |
| CN110101448A (en) * | 2019-04-22 | 2019-08-09 | 西安交通大学 | A kind of photocuring hydrogel conveying device for Minimally Invasive Surgery and Method of printing in situ |
| CN110101448B (en) * | 2019-04-22 | 2020-10-27 | 西安交通大学 | Photocuring hydrogel conveying device for minimally invasive surgery and in-situ printing method |
| CN111169008A (en) * | 2020-03-03 | 2020-05-19 | 曹林 | 3D printing nozzle |
| CN111169008B (en) * | 2020-03-03 | 2022-02-18 | 天津博盛睿创科技有限公司 | 3D printing nozzle |
| US11833820B2 (en) | 2020-11-12 | 2023-12-05 | Laser Engineering & Development Itd. | Printer nozzle structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170905 |