CN109732923A - A kind of pre- photocuring formula extrusion 3D printing spray head towards a variety of light-sensitive materials - Google Patents
A kind of pre- photocuring formula extrusion 3D printing spray head towards a variety of light-sensitive materials Download PDFInfo
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- CN109732923A CN109732923A CN201910001109.XA CN201910001109A CN109732923A CN 109732923 A CN109732923 A CN 109732923A CN 201910001109 A CN201910001109 A CN 201910001109A CN 109732923 A CN109732923 A CN 109732923A
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- 239000000463 material Substances 0.000 title claims abstract description 91
- 238000001125 extrusion Methods 0.000 title claims abstract description 30
- 238000000016 photochemical curing Methods 0.000 title claims abstract description 26
- 238000010146 3D printing Methods 0.000 title claims abstract description 21
- 239000007921 spray Substances 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims description 13
- 238000007711 solidification Methods 0.000 claims description 12
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- 239000000758 substrate Substances 0.000 claims description 7
- 239000013307 optical fiber Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
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- 208000033748 Device issues Diseases 0.000 claims 1
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Abstract
The invention discloses a kind of, and the pre- photocuring formula towards a variety of light-sensitive materials squeezes out 3D printing spray head, including main casing, and extrusion head module and ultraviolet optical module inside main casing are set, squeezing out module includes that variable diameters are protected from light material storing room, syringe, syringe needle, extrusion system, and it includes collet and Fixing shrink ring that variable diameters, which are protected from light material storing room,；Ultraviolet optical module includes UV fiber and structure of fiber_optic.The present invention proposes that multiple beam focuses curing light source design, different materials demand can be directed to, regulate and control condition of cure, light intensity and Wavelength tunable, structure of fiber_optic and ring set relative position are controllable, realize and are accurately positioned cure site, plug phenomenon caused by capable of effectively avoiding needle wall from solidifying, guarantee that liquid filament curing degree is uniform, filament compact dimensions accurately control.The present invention realizes print structure integrally curing time consistency and controllable, significantly improves formed precision, structural stability and the uniformity with cell material by using external sub-curing process.
Description
Technical field
The present invention relates to a kind of pre- light for threedimensional model manufacture and biological tissue's manufacture suitable for multiple material is solid
Change formula squeezes out 3D printing spray head, supports a variety of light-sensitive materials manufactures and cell and biomaterial printing, belongs to material increasing field
With biological 3D printing field.
Background technique
For terminal phase organ and tissue repair field, human tissue organ's transplanting is that first have most commonly seen treatment side
Method.But due to histoorgan donor shortage, recipient immune rejection, the multiple limitation such as religion, culture, policy needs to research and develop
Histoorgan is for body substitute.Organizational project is by multiple materials and biophysical chemistry sides appropriate such as combination cells
Method improves or substitutes biological tissue, is to repair or part or all of tissue (i.e. bone, cartilage, blood vessel, bladder, skin, the flesh of replacement
Meat etc.) important research means.In field of tissue engineering technology, biomaterial increasing material manufacturing can altitude simulation natural fabric feature
The manufacture means of biomedical structure.
Traditional photo-curing material increasing material manufacturing method includes that DLP printing and SLA printing, liquid photosensitive material are loaded on storage
Material pond is allowed to solidify and formed required three-dimension object by projecting ultraviolet (UV) luminous point or face in liquid photosensitive material
Single layer structure.Multilayer accumulation is realized by lifting printed substrates, is completed until 3D structure prints.3D structure must use spy after printing
Different solvent cleaning, removes the uncured material on surface.It is limited by printing three-dimension object size by bin stock pool size, and material-stored pool
Middle preloaded liquid photosensitive material dosage is larger, causes liquid photosensitive material to waste, manufacturing cost is significantly greatly increased.The material of different layers
The problems such as expecting that light irradiation time is different, easily causing uneven inside configuration stress distribution, structural deflection deformation, in turn results in containing cell
In file printing, different location cell light irradiation time is different, impacts to cell survival rate in structure and distribution.
Summary of the invention
The purpose of the present invention is to solve the above problems, and in view of the deficiencies of the prior art, the present invention provides a kind of faces
3D printing spray head is squeezed out to the pre- photocuring formula of a variety of light-sensitive materials.It is able to achieve multiple material and squeezes out photocuring increasing material manufacturing, knot
Structure design is rationally, easy to assembly, can be directed to different materials demand, light intensity Wavelength tunable, external precuring, solidification point can accurately determine
Position and control, plug phenomenon caused by effectively avoiding needle wall from solidifying, overall structure is consistent when solidifying, and significantly improves printing speed
Degree, formed precision and cell activity, effectively reduce waste of material, greatly reduction manufacturing cost.
In order to meet above-mentioned requirements, the technical solution adopted by the present invention to solve the technical problems is:
It includes main casing that pre- photocuring formula towards a variety of light-sensitive materials, which squeezes out 3D printing nozzle structure, and is arranged in master
The extrusion head module and ultraviolet optical module of enclosure interior, squeezing out module includes that variable diameters are protected from light material storing room, syringe, syringe needle, extrusion
System, it includes Fixing shrink ring and several collets that variable diameters, which are protected from light material storing room,；Ultraviolet optical module includes UV fiber and structure of fiber_optic；
Wherein,
Fixing shrink ring is fixed in main casing, and syringe needle is connected to the syringe for being mounted with liquid light-sensitive material, and syringe passes through several
Collet is clamped in inside Fixing shrink ring, and for syringe for loading liquid photosensitive material, syringe is connected with extrusion system realizes material
It squeezes out；Structure of fiber_optic is nested in Fixing shrink ring periphery, and UV fiber is embedded in structure of fiber_optic, and the external ultraviolet light of UV fiber occurs
Device；When work, ultraviolet light is issued by ultraviolet light generator, by the UV fiber inside structure of fiber_optic, from structure of fiber_optic bottom
Portion projects, and focuses on structure of fiber_optic bottom part down and form ultraviolet focus, and liquid photosensitive material is squeezed out by syringe needle, and process is ultraviolet
Focus is solidified into solid filament.
Preferably, the extrusion system is using pneumatic or Screw Extrusion mode.
Preferably, the collet that variable diameters are protected from light material storing room is made of stainless steel, and variable diameters are protected from light the fixed ring of material storing room
Set is made of aluminium alloy, and outer surface indicates fixed scale；Support more specification syringes, syringe specification limit: 1ml~50ml.
Preferably, several collets are uniformly distributed in the circumferential direction of Fixing shrink ring, and several collets clamp syringe jointly；
It provides and adjusts the length that collet enters Fixing shrink ring, the syringe of different size can be clamped.
Preferably, the structure of fiber_optic uses deep ultraviolet silica fibre, is 200~800nm by wave band；Structure of fiber_optic is adopted
It is made of aluminium alloy；16 optical-fibre channels are evenly distributed on inside structure of fiber_optic in an annular manner, and ultraviolet light is with identical oblique angle
It is projected from structure of fiber_optic bottom, focuses on structure of fiber_optic bottom part down, ultraviolet focus can be by adjusting structure of fiber_optic with respect to bin stock
The position of room Fixing shrink ring and scale are accurately positioned and are controlled；Optical fiber light intensity is identical, and light intensity and wavelength can pass through external purple
Outer optical generator regulation, for single light intensity less than material solidification requirement, polymerization light is powerful in material solidification requirement.
Preferably, the syringe needle uses stainless steel syringe needle, and solid filament size is guaranteed by syringe needle internal diameter, size model
It encloses: 0.31mm~2.77mm.
Preferably, it further includes printed substrates that the pre- photocuring formula towards a variety of light-sensitive materials, which squeezes out 3D printing spray head,
Solid filament is regulated and controled by external three-dimensional motion system, falls within printed substrates according to design requirement.
Variable diameters are protected from light material storing room and can be adjusted according to standard syringe outer diameter, be suitable for specification be 3cc, 5cc, 10cc,
The standard syringe of 30cc is adapted to syringe outer diameter range: 11-26cm
The beneficial effects of the present invention are:
A kind of pre- photocuring formula towards a variety of light-sensitive materials provided by the invention squeezes out 3D printing spray head, including main casing
Body, collet, Fixing shrink ring, syringe needle, UV fiber and structure of fiber_optic.Wherein, the present invention is by using reasonable structure design side
Case, realize squeeze out photocuring integrate spray head, portable construction is compact, assembling and it is convenient for mounting and clamping, be suitable for a variety of light-sensitive materials and
More specification syringes improve scalability.
The present invention proposes that multiple beam focuses curing light source design, can be directed to different materials demand, regulate and control condition of cure, light intensity
And Wavelength tunable, structure of fiber_optic and ring set relative position are controllable, realize and are accurately positioned cure site, relative to existing molding skill
Art, plug phenomenon caused by effectively avoiding needle wall from solidifying guarantee that liquid filament curing degree is uniform, and filament compact dimensions can
Accurate control.
The present invention realizes printing knot by regulating and controlling pneumatic extrusion/Screw Extrusion parameter by using external sub-curing process
Structure integrally curing time consistency and controllable, significantly improves formed precision, structural stability and the uniformity with cell material, reduces
Different layer material light irradiation time inconsistence problems in existing photocuring printing, structure different location solidifies light intensity after improving printing
Problem of non-uniform.
The present invention encapsulates overall structure, material good airproof performance by main casing, and ultraviolet optical module is isolated with external environment, protects
Card squeezes out solidification process not by external interference, while avoiding ultraviolet light pollution.
The present invention realizes photo-curing material printing by using extrusion method, effectively reduces waste of material, greatly reduces system
Cause this.
In conclusion a kind of pre- photocuring formula towards a variety of light-sensitive materials proposed by the present invention squeezes out 3D printing spray head,
It realizes the extrusion technology of a variety of liquid photosensitive materials, significantly improves the deficiencies in the prior art, provides for foregoing problems
Effective solution scheme.
Detailed description of the invention
Fig. 1 is that the pre- photocuring formula towards a variety of light-sensitive materials squeezes out 3D printing spray head explosive view.
Fig. 2 is that the pre- photocuring formula towards a variety of light-sensitive materials squeezes out 3D printing spray head cross-sectional view.
In figure: 1 is syringe, and 2 be syringe needle, and 3 be main casing, and 4 be Fixing shrink ring, and 5 be collet, and 6 be UV fiber, and 7 be light
Fine bracket, 8 be ultraviolet light beam, and 9 be liquid filament, and 10 be solid filament, and 11 be printed substrates, and 12 be extrusion system, and 13 be light
Quick material.
Specific embodiment
Present invention will be further explained below with reference to specific examples specific structure and working principle, it should be appreciated that these implementations
Example is only illustrative of the invention and is not intended to limit the scope of the invention.In addition, it should also be understood that, having read in of the invention lecture
After appearance, those skilled in the art can make various modifications or changes to the present invention, and such equivalent forms also fall within application institute
Attached claims limited range.
As shown in Figure 1, the pre- photocuring formula proposed by the present invention towards a variety of light-sensitive materials squeezes out 3D printing spray head, it is first
First, a variety of light-sensitive materials refer to that there is no limit can pass through the pneumatic extrusion/spiral shell of regulation according to materials demand to the present invention to light-sensitive material
Bar extrusion parameter and ultraviolet wavelength and intensity control material solidification realize that the print structure integrally curing time is controllable.Also, light
Fine bracket and ring set relative position are controllable, realize that being accurately positioned cure site effectively avoids syringe needle relative to existing forming technique
Plug phenomenon caused by internal curing.Solidify before material is stacked into three-dimensional structure secondly, pre- photocuring refers to, is passed through by liquid filament
Cross can pinpoint multiple beam focus curing molding form solid filament, filament size can be protected by the syringe needle of different size
Card realizes print structure integrally curing time consistency, guarantees that liquid filament curing degree is uniform, significantly improves formed precision, ties
Structure stability and uniformity with cell material.Meanwhile main casing encapsulates overall structure, material good airproof performance, ultraviolet optical module
It is isolated with external environment, guarantees to squeeze out solidification process not by external interference, while avoiding ultraviolet light pollution.Finally, extrusion method
It realizes photo-curing material printing, effectively reduces waste of material, greatly reduction manufacturing cost.
Specifically, the present invention is divided into following components: main casing 3, and the extruder head inside main casing 3 is arranged in
Module and ultraviolet optical module, squeezing out module includes that variable diameters are protected from light material storing room, syringe 1, syringe needle 2, pneumatic extrusion/Screw Extrusion system
System 12, it includes collet 5 and Fixing shrink ring 4 that variable diameters, which are protected from light material storing room,.Ultraviolet optical module includes UV fiber 6 and structure of fiber_optic 7.
As shown in Fig. 2, ultraviolet light is issued by ultraviolet light generator, by the UV fiber 6 inside structure of fiber_optic 7, from
7 bottom of structure of fiber_optic is projected, and focuses on 7 bottom part down of structure of fiber_optic, can be obtained by adjusting the parameter of ultraviolet light generator
The ultraviolet light beam 8 of different light intensity and wavelength.
Ring set 4 is fixed on main casing 3, and syringe needle 2 is connected to the syringe 1 for being mounted with liquid light-sensitive material 13, passes through 5 clamping of collet
It being protected from light inside material storing room in variable diameters, 3 variable diameters modes of stepping up support more specification syringes, it is simple and compact for structure, it is easy dress
Folder, syringe can 360 degree rotation.
It can support a variety of extrusion ways such as pneumatic extrusion/Screw Extrusion are realized to squeeze out printing, pneumatic extrusion/Screw Extrusion system
System 12 determines the speed for squeezing out filament and curing time.
The syringe 1 for being mounted with liquid photosensitive material 13 is fixed on variable diameters and is protected from light inside material storing room, liquid photosensitive material 13
It is extruded into liquid filament 9 by syringe needle 2, the focus through excessive ultraviolet light beam 8 is solidified into solid filament 10, falls within printed substrates
11。
More ultraviolet light beams focus solidification, can be directed to different materials demand, regulate and control condition of cure, light intensity and Wavelength tunable, light
Fine bracket 7 and 4 relative position of ring set are controllable, and less than material solidification requirement, polymerization light is powerful to be required single light intensity in material solidification,
Liquid filament 9 is only capable of solidifying in more 8 focal positions of ultraviolet light beam, realizes and is accurately positioned solidification focal position, solidifies position in setting
It sets, liquid filament 9 can form solid filament 10 by ultraviolet optical focus.
Main casing 3 encapsulates overall structure, material good airproof performance, and ultraviolet optical module is isolated with external environment, guarantees to squeeze out solid
Change process avoids ultraviolet light pollution not by external interference, and encapsulation design supports spray head in any 3D printing motion platform
Installability.
Case study on implementation:
The methacrylated hyaluronic acid photo-curing material of 1M is selected, syringe 50ml, syringe needle 25G are pneumatic to squeeze out, and squeeze out
Pressure 0.55bar, wavelength 300nm ultraviolet light generator, 16 μ w/cm2 of light intensity, 256 μ w/cm of focus light intensity2.It can stablize and continue
Print the solid filament that diameter is 0.28mm.
Claims (7)
1. a kind of pre- photocuring formula towards a variety of light-sensitive materials squeezes out 3D printing nozzle structure, which is characterized in that including main casing
Body (3), and extrusion head module and ultraviolet optical module that setting is internal in main casing (3), squeezing out module includes that variable diameters are protected from light
Material storing room, syringe (1), syringe needle (2), extrusion system (12), it includes Fixing shrink ring (4) and several collets that variable diameters, which are protected from light material storing room,
(5)；Ultraviolet optical module includes UV fiber (6) and structure of fiber_optic (7)；Wherein,
Fixing shrink ring (4) is fixed in main casing (3), and syringe needle (2) is connected to the syringe (1) for being mounted with liquid light-sensitive material, syringe
(1) it is clamped in Fixing shrink ring (4) inside by several collets (5), syringe (1) is for loading liquid photosensitive material (13), syringe
(1) it is connected with extrusion system (12) and realizes the extrusion of material；Structure of fiber_optic (7) is nested in Fixing shrink ring (4) periphery, UV fiber
(6) it is embedded in structure of fiber_optic (7), UV fiber (6) external ultraviolet light generator；When work, ultraviolet light is occurred by ultraviolet light
Device issues, and by the internal UV fiber (6) of structure of fiber_optic (7), projects from structure of fiber_optic (7) bottom, and focus on optical fiber branch
Frame (7) bottom part down forms ultraviolet focus, and liquid photosensitive material (13) is squeezed out by syringe needle (2), is solidified by ultraviolet focus
Solid filament (10).
2. a kind of pre- photocuring formula towards a variety of light-sensitive materials according to claim 1 squeezes out 3D printing spray head, special
Sign is that the extrusion system (12) is using pneumatic or Screw Extrusion mode.
3. a kind of pre- photocuring formula towards a variety of light-sensitive materials according to claim 1 squeezes out 3D printing spray head,
It is characterized in that, the collet (5) that variable diameters are protected from light material storing room is made of stainless steel, and variable diameters are protected from light the Fixing shrink ring of material storing room
(4) it is made of aluminium alloy, outer surface indicates fixed scale；Support more specification syringes (1), syringe (1) specification limit: 1ml~
50ml。
4. a kind of pre- photocuring formula towards a variety of light-sensitive materials according to claim 1 or 3 squeezes out 3D printing spray head,
It is characterized in that several collets (5) are uniformly distributed in the circumferential direction of Fixing shrink ring (4), several collets (5) clamp jointly
Syringe (1)；It provides and adjusts the length that collet (5) enter Fixing shrink ring (4), the syringe (1) of different size can be clamped.
5. a kind of pre- photocuring formula towards a variety of light-sensitive materials according to claim 1 squeezes out 3D printing spray head, special
Sign is that the structure of fiber_optic (7) uses deep ultraviolet silica fibre, is 200~800nm by wave band；Structure of fiber_optic (7) uses
Aluminium alloy is made；16 optical-fibre channels are evenly distributed on structure of fiber_optic (7) inside in an annular manner, and ultraviolet light is with identical oblique angle
It is projected from structure of fiber_optic (7) bottom, focuses on structure of fiber_optic (7) bottom part down, ultraviolet focus can be by adjusting structure of fiber_optic (7)
The position of opposite material storing room's Fixing shrink ring (4) and scale are accurately positioned and are controlled；Optical fiber light intensity is identical, and light intensity and wavelength can
Regulated and controled by external ultraviolet light generator, for single light intensity less than material solidification requirement, polymerization light is powerful in material solidification requirement.
6. a kind of pre- photocuring formula towards a variety of light-sensitive materials according to claim 1 squeezes out 3D printing spray head, special
Sign is that the syringe needle (2) uses stainless steel syringe needle (2), and solid filament (10) size is guaranteed by syringe needle (2) internal diameter,
Size range: 0.31mm~2.77mm.
7. a kind of pre- photocuring formula towards a variety of light-sensitive materials according to claim 1 squeezes out 3D printing spray head, special
Sign is, further includes printed substrates (11), and solid filament (10) is regulated and controled by external three-dimensional motion system, fallen according to design requirement
In printed substrates (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001109.XA CN109732923B (en) | 2019-01-02 | 2019-01-02 | Pre-photo-curing type extrusion 3D printing spray head for various photosensitive materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001109.XA CN109732923B (en) | 2019-01-02 | 2019-01-02 | Pre-photo-curing type extrusion 3D printing spray head for various photosensitive materials |
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| Publication Number | Publication Date |
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| CN109732923A true CN109732923A (en) | 2019-05-10 |
| CN109732923B CN109732923B (en) | 2024-03-12 |
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Cited By (6)
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| CN111169008A (en) * | 2020-03-03 | 2020-05-19 | 曹林 | 3D printing nozzle |
| CN111482602A (en) * | 2020-04-09 | 2020-08-04 | 北京科技大学 | 3D printing device and method based on photocuring agent injection and capable of preventing blockage of spray head |
| CN111923402A (en) * | 2020-09-16 | 2020-11-13 | 佛山科学技术学院 | Rigid-flexible coupling part mixed additive manufacturing method based on liquid gel environment |
| WO2021158659A1 (en) * | 2020-02-03 | 2021-08-12 | Advanced Solutions Life Sciences, Llc | Modular light source for curing of 3d printed biological and engineered materials |
| CN113878873A (en) * | 2021-10-11 | 2022-01-04 | 中北大学 | Photocuring anisotropic permanent magnet 3D printer and using method thereof |
| CN114147953A (en) * | 2021-11-30 | 2022-03-08 | 江南大学 | Additive manufacturing equipment and method based on material extrusion and photocuring composite molding |
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| CN111923402A (en) * | 2020-09-16 | 2020-11-13 | 佛山科学技术学院 | Rigid-flexible coupling part mixed additive manufacturing method based on liquid gel environment |
| CN113878873A (en) * | 2021-10-11 | 2022-01-04 | 中北大学 | Photocuring anisotropic permanent magnet 3D printer and using method thereof |
| CN114147953A (en) * | 2021-11-30 | 2022-03-08 | 江南大学 | Additive manufacturing equipment and method based on material extrusion and photocuring composite molding |
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