CN105773973A - 3D printing nozzle device and 3D printing method - Google Patents
3D printing nozzle device and 3D printing method Download PDFInfo
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- CN105773973A CN105773973A CN201610231785.2A CN201610231785A CN105773973A CN 105773973 A CN105773973 A CN 105773973A CN 201610231785 A CN201610231785 A CN 201610231785A CN 105773973 A CN105773973 A CN 105773973A
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- feeding
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- inlet channel
- printing
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08L61/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
Abstract
The invention discloses a 3D printing nozzle device which comprises a nozzle body, wherein a high-pressure air inlet is further formed in the nozzle body and is communicated with a high-pressure air intake pipe; the nozzle body is an inverted conical body with a downward peak; the high-pressure air inlet is formed in the middle of the top face of the inverted conical body; a material inlet is further formed in the top face of the inverted conical body and is communicated with a material feeding pipe for conveying a printing consumable atomizing material; a nozzle outlet is formed in the lower end of the inverted conical body. A 3D printing method applicable to the 3D printing nozzle device comprises the following steps: respectively atomizing two or more solutions in printing materials into fog drops with a diameter of 40 microns; respectively putting the two or more atomized solutions into a mixing cavity through two or more material feeding channels for uniform mixing, wherein one solution corresponds to one material feeding channel; jetting the uniformly mixed printing materials onto black onyx powder through the nozzle outlet, and forming and overlapping layer by layer until printing of a printing model is completed.
Description
Technical field
The present invention relates to 3D printing technique field, especially one 3D printing nozzle device and 3D Method of printing.
Background technology
3D printing technique presently, there are three kinds of molding modes.The first, it is common to common fused deposition mode；The second light-cured resin fluent material；The third adopts laser sintering powder fused deposition mode.The molding mode of these three cuts both ways, but to realize industry and be commonly utilized in equipment price, becomes the aspect such as type hardness tester, intensity to also have very big a certain distance.
The problems such as traditional spraying technique is big to powder impact power, it is easy to promote body of powder to offset, firming agent infiltration, cause that the precision quality of forming model is poor, and can not be widely used.
Summary of the invention
In order to overcome existing 3D printing technique to there is the deficiency that product strength is poor, precision is relatively low, the present invention provides the 3D printing nozzle device and 3D Method of printing that a kind of product strength printed is better, precision is higher.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of 3D printing nozzle device, including nozzle body, described nozzle body is additionally provided with high pressure admission mouth, described high pressure admission mouth connects with high-pressure pipe, described nozzle body is summit back taper body down, and described high pressure admission mouth is arranged in the middle part of the end face of described back taper body, and the end face of described back taper body also has charging aperture, described charging aperture is with in order to carry the feed pipe of printing consumables atomization material to connect, and the lower end of described back taper body is provided with jet expansion；
The inside of described back taper body is provided with inlet channel, feeding-passage and the hybrid chamber in order to printing consumables atomization material mixing, described inlet channel is vertically arranged, described hybrid chamber is positioned at the lower section of described inlet channel, the upper end of described inlet channel connects with described air inlet, the upper end of described feeding-passage connects with described charging aperture, the lower end of described inlet channel connects with the upper end of described hybrid chamber, the lower end of described feeding-passage connects with the middle and lower part of described hybrid chamber, the lower end of described hybrid chamber connects with jet expansion, described inlet channel, hybrid chamber is all coaxially disposed with jet expansion；
Described charging aperture is provided with two or more, and plural charging aperture is arranged symmetrically in a week of described high pressure admission mouth；Described feeding-passage is provided with two or more, and plural feeding-passage is distributed on a week of described inlet channel.
Further, described charging aperture is provided with two, respectively the first charging aperture and the second charging aperture, and described first charging aperture and described second charging aperture are arranged symmetrically on the end face of the back taper body of the both sides of described high pressure admission mouth；Described feeding-passage is provided with two, respectively the first feeding-passage and the second feeding-passage, and described first feeding-passage and described second feeding-passage are arranged symmetrically in the both sides of described inlet channel；
The upper end of described first feeding-passage connects with described first charging aperture, the lower end of described first feeding-passage connects with the middle and lower part of the side of described mixing cavity, the upper end of described second feeding-passage connects with described second charging aperture, and the lower end of described second feeding-passage connects with the middle and lower part of the opposite side of described mixing cavity.
Further, described inlet channel includes heavy in section inlet channel and small bore inlet channel, the internal diameter of described small bore inlet channel is less than the internal diameter of described heavy in section inlet channel, the upper end of described heavy in section inlet channel connects with described high pressure admission mouth, the lower end of described heavy in section inlet channel connects with the upper end of described small bore inlet channel, and the lower end of described small bore inlet channel connects with the upper end of described hybrid chamber.
Further, described feeding-passage includes heavy in section feeding-passage and small bore feeding-passage, and the internal diameter of described small bore feeding-passage is less than the internal diameter of described heavy in section feeding-passage；The upper end of described heavy in section feeding-passage connects with described charging aperture, and the lower end of described heavy in section feeding-passage is connected with the upper end of described small bore feeding-passage, and the lower end of described small bore feeding-passage connects with the middle and lower part of described hybrid chamber.
Further, described small bore inlet channel is hollow screw, threadeds in the lower end that the upper end of described hollow screw leads to the air inlet of described heavy in section.
A kind of 3D Method of printing suitable in 3D printing nozzle device, comprises the steps:
Printed material includes two or more solution；
1) the two or more solution in printed material is atomized into the droplet that diameter is 40um respectively；
2) respectively through plural feeding-passage, the two or more solution after atomization is entered into hybrid chamber fully to mix, the corresponding feeding-passage of a kind of solution；
3) being located on printer model base plate by black onyx powder uniform spreading and printer model base plate is heated, the particle diameter of black onyx powder is 1～200um；
4) by step 2) fully printed material after mixing be ejected into step 3 by the jet expansion of 3D printing nozzle device) in black onyx powder on, successively molding superposition, until completing the printing of printer model.
In further, it is preferable that step 1), printed material includes two kinds, is solution A and B solution respectively, and the mass ratio of described solution A and B solution is 3: 1～5: 1；
Described solution A is to be that 30～40% Ludox and mass concentration 40-60% melmac aqueous solution under 40～60 DEG C condition are sufficiently stirred for mixing generate poly-silicon polyimide resin solution that mass concentration be 45～85% in mass ratio at 2: 1: 1 by Lauxite, mass concentration；
Described B solution is to be mixed by the calcium chloride water that mass concentration is 4%～10% and ammonium persulfate aqueous solution 1: 1 room temperature in mass ratio that mass concentration is 1%～2%.
In further, it is preferable that step 3), the laying depth of black onyx powder is 200um.
Further, preferred described solution A, B solution two solution are atomized into the droplet that diameter is 40um respectively, then respectively through the first feeding-passage and the second feeding-passage, the solution A after atomization and B solution are entered hybrid chamber to mix, it is ejected into from jet expansion with the droplet of diameter about 40um under the effect of mixed solution high pressure draught in inlet channel and is equipped with black onyx powder the printer model base plate that heats, successively molding superposition, until completing printer model.
Further, it is preferable that the heating-up temperature of described printer model base plate is 30～40 DEG C.
Beneficial effects of the present invention is mainly manifested in: product strength is better, precision is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of 3D printing nozzle device.
Fig. 2 is the operating diagram of 3D printing nozzle device.
Fig. 3 is the sectional view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1～Fig. 3, a kind of 3D printing nozzle device, including nozzle body 007, described nozzle body 007 is additionally provided with high pressure admission mouth, described high pressure admission mouth connects with high-pressure pipe 002, described nozzle body 007 is summit back taper body down, described high pressure admission mouth is arranged in the middle part of the end face of described back taper body, the end face of described back taper body also has charging aperture, described charging aperture is with in order to carry the feed pipe of printing consumables atomization material to connect, and the lower end of described back taper body is provided with jet expansion 015；
The inside of described back taper body is provided with inlet channel, feeding-passage and the hybrid chamber 014 in order to printing consumables atomization material mixing, described inlet channel is vertically arranged, described hybrid chamber 014 is positioned at the lower section of described inlet channel, the upper end of described inlet channel connects with described air inlet, the upper end of described feeding-passage connects with described charging aperture, the lower end of described inlet channel connects with the upper end of described hybrid chamber 014, the lower end of described feeding-passage connects with the middle and lower part of described hybrid chamber 014, the lower end of described hybrid chamber 014 connects with jet expansion 015, described inlet channel, hybrid chamber 014 is all coaxially disposed with jet expansion 015；
Described charging aperture is provided with two or more, and plural charging aperture is arranged symmetrically in a week of described high pressure admission mouth；Described feeding-passage is provided with two or more, and plural feeding-passage is distributed on a week of described inlet channel.
Further, described charging aperture is provided with two, respectively the first charging aperture and the second charging aperture, and described first charging aperture and described second charging aperture are arranged symmetrically on the end face of the back taper body of the both sides of described high pressure admission mouth；Described feeding-passage is provided with two, respectively the first feeding-passage and the second feeding-passage, and described first feeding-passage and described second feeding-passage are arranged symmetrically in the both sides of described inlet channel；
The upper end of described first feeding-passage connects with described first charging aperture, the lower end of described first feeding-passage connects with the middle and lower part of the side of described hybrid chamber 014, the upper end of described second feeding-passage connects with described second charging aperture, and the lower end of described second feeding-passage connects with the middle and lower part of the opposite side of described hybrid chamber 014.
Further, described inlet channel includes heavy in section inlet channel 010 and small bore inlet channel 011, the internal diameter of described small bore inlet channel 011 is less than the internal diameter of described heavy in section inlet channel 010, the upper end of described heavy in section inlet channel 010 connects with described high pressure admission mouth, the lower end of described heavy in section inlet channel 010 connects with the upper end of described small bore inlet channel 011, and the lower end of described small bore inlet channel 011 connects with the upper end of described hybrid chamber 014.
Further, described feeding-passage includes heavy in section feeding-passage and small bore feeding-passage, and the internal diameter of described small bore feeding-passage is less than the internal diameter of described heavy in section feeding-passage；The upper end of described heavy in section feeding-passage connects with described charging aperture, and the lower end of described heavy in section feeding-passage is connected with the upper end of described small bore feeding-passage, and the lower end of described small bore feeding-passage connects with the middle and lower part of described hybrid chamber 014.
Further, described small bore inlet channel 011 is hollow screw, threadeds with the lower end of described heavy in section air inlet logical 010 in the upper end of described hollow screw.
As in figure 2 it is shown, 002 is high-pressure pipe, 001 is hyperbar air-flow, and 003 is solution A atomized flow, and 005 is B solution atomized flow, and 007 is nozzle body, and 008 is printer model.Liquid printing consumables is utilized gas pressure to be atomized by fluent material by the effect of high-pressure pipe 002, and A pipe material 004 and B pipe material 006 is entered with mist, then under the influence of air pressure, allow printing consumables proportionally be sufficiently mixed in hybrid chamber 014, then utilize air pressure to be sprayed by mixed printed material.
As it is shown on figure 3,010 is heavy in section inlet channel, hollow screw 011 plays and reduces the flow area entering hybrid chamber, thus increasing the effect of air-flow velocity；The small bore feeding-passage 012 of the first feeding-passage, plays the effect increasing atomization stream speed；The small bore feeding-passage 013 of the second feeding-passage, plays the effect increasing atomization stream speed.
Embodiment one:
1, the preparation of solution A and B solution:
The preparation of solution A: by mol ratio (F/U) less than 1.5, the E of free formaldehyde content≤3mg/100g0Level environment-friendly urea-formaldehyde resin is 30～40% Ludox with mass concentration, Ludox pH value 8～9, mean diameter 7～24nm, specific surface area 140～400m2/ g, viscosity 17～20cp；Adding the melmac aqueous solution that mass concentration is 40～55%, under 40～60 DEG C condition mix milky that mass concentration be 45～85% poly-silicon polyimide resin solution of generation at 2: 1: 1 in mass ratio, and this solution uses as solution A.
The preparation of B solution: for firming agent, including calcium chloride water and ammonium persulfate aqueous solution；Wherein the purity of calcium chloride is 90%, becomes aqueous solution to calcium chloride with addition pure water mixing in Ammonium persulfate. respectively, and the mass concentration of calcium chloride water is 4%～10%；The mass concentration of ammonium persulfate aqueous solution is 1%～2%, in mass ratio 1: 1, and mix at normal temperatures, use as B solution.
2, Method of printing:
Spray nozzle device by injecting type 3D printer, solution A, B solution is brought into the first feeding-passage and the second feeding-passage under the effect of air-flow respectively through A pipe material 004 and B pipe material 006, mix cavity 014 in mixing there is prepolymerization reaction at A: B=5: 1 by volume in solution A and B solution, occur the mixed solution of prepolymerization reaction under the effect of air-flow 001, it is ejected into the droplet of diameter about 40um and is equipped with on the printer model base plate of black onyx powder 009, printer model base plate 009 is heated to 40 DEG C, the mixed solution ejected runs into the black onyx dusty material with uniform temperature, instantaneous solidification molding, the spray nozzle device of injecting type 3D printer is according to the model track successively molding of printer model superposition, until completing the printing of printer model.
The laying depth of black onyx powder is 200um, and the particle diameter of black onyx powder is 1-200um.
Embodiment two:
1, solution A is identical with embodiment one with the preparation method of B solution.
2, in Method of printing: solution A and B solution by volume for A: B=4: 1 mix mixing in cavity 014, printer model base plate 009 is heated to 36 DEG C；Other operation is with embodiment 1.
Embodiment three:
1, solution A is identical with embodiment one with the preparation method of B solution.
2, in Method of printing: solution A and B solution by volume for A: B=3: 1 mix mixing in cavity 014, printer model base plate 009 is heated to 35 DEG C；Other operation is with embodiment 1.
The present invention adopts the solution A that nano-silicon solution, Lauxite, melamine solution are polymerized, and this material flowability is good, solidification intensity is high, note pressure pressure is low；What printed material adopted is the mode that mixes according to a certain percentage with B solution of solution A, and the gel solidification time can be adjusted according to proportioning, and this printed material uses the double; two mode noted of biliquid, solidification intensity and better effects if.
Claims (10)
1. a 3D printing nozzle device, including nozzle body, it is characterized in that: described nozzle body is additionally provided with high pressure admission mouth, described high pressure admission mouth connects with high-pressure pipe, described nozzle body is summit back taper body down, and described high pressure admission mouth is arranged in the middle part of the end face of described back taper body, and the end face of described back taper body also has charging aperture, described charging aperture is with in order to carry the feed pipe of printing consumables atomization material to connect, and the lower end of described back taper body is provided with jet expansion；
The inside of described back taper body is provided with inlet channel, feeding-passage and the hybrid chamber in order to printing consumables atomization material mixing, described inlet channel is vertically arranged, described hybrid chamber is positioned at the lower section of described inlet channel, the upper end of described inlet channel connects with described air inlet, the upper end of described feeding-passage connects with described charging aperture, the lower end of described inlet channel connects with the upper end of described hybrid chamber, the lower end of described feeding-passage connects with the middle and lower part of described hybrid chamber, the lower end of described hybrid chamber connects with jet expansion, described inlet channel, hybrid chamber is all coaxially disposed with jet expansion；
Described charging aperture is provided with two or more, and plural charging aperture is arranged symmetrically in a week of described high pressure admission mouth；Described feeding-passage is provided with two or more, and plural feeding-passage is distributed on a week of described inlet channel.
2. a kind of 3D printing nozzle device as claimed in claim 1, it is characterized in that: described charging aperture is provided with two, respectively the first charging aperture and the second charging aperture, described first charging aperture and described second charging aperture are arranged symmetrically on the end face of the back taper body of the both sides of described high pressure admission mouth；Described feeding-passage is provided with two, respectively the first feeding-passage and the second feeding-passage, and described first feeding-passage and described second feeding-passage are arranged symmetrically in the both sides of described inlet channel；
The upper end of described first feeding-passage connects with described first charging aperture, the lower end of described first feeding-passage connects with the middle and lower part of the side of described mixing cavity, the upper end of described second feeding-passage connects with described second charging aperture, and the lower end of described second feeding-passage connects with the middle and lower part of the opposite side of described mixing cavity.
3. a kind of 3D printing nozzle device as claimed in claim 1 or 2, it is characterized in that: described inlet channel includes heavy in section inlet channel and small bore inlet channel, the internal diameter of described small bore inlet channel is less than the internal diameter of described heavy in section inlet channel, the upper end of described heavy in section inlet channel connects with described high pressure admission mouth, the lower end of described heavy in section inlet channel connects with the upper end of described small bore inlet channel, and the lower end of described small bore inlet channel connects with the upper end of described hybrid chamber.
4. a kind of 3D printing nozzle device as claimed in claim 1 or 2, it is characterised in that: described feeding-passage includes heavy in section feeding-passage and small bore feeding-passage, and the internal diameter of described small bore feeding-passage is less than the internal diameter of described heavy in section feeding-passage；The upper end of described heavy in section feeding-passage connects with described charging aperture, and the lower end of described heavy in section feeding-passage is connected with the upper end of described small bore feeding-passage, and the lower end of described small bore feeding-passage connects with the middle and lower part of described hybrid chamber.
5. a kind of 3D printing nozzle device as claimed in claim 3, it is characterised in that: described small bore inlet channel is hollow screw, threadeds in the lower end that the upper end of described hollow screw leads to the air inlet of described heavy in section.
6. the 3D Method of printing being applicable to 3D printing nozzle device as claimed in claim 1, it is characterised in that: comprise the steps:
Printed material includes two or more solution；
1) the two or more solution in printed material is atomized into the droplet that diameter is 40um respectively；
2) respectively through plural feeding-passage, the two or more solution after atomization is entered into hybrid chamber fully to mix, the corresponding feeding-passage of a kind of solution；
3) being located on printer model base plate by black onyx powder uniform spreading and printer model base plate is heated, the particle diameter of black onyx powder is 1～200um；
4) by step 2) fully printed material after mixing be ejected into step 3 by the jet expansion of 3D printing nozzle device) in black onyx powder on, successively molding superposition, until completing the printing of printer model.
7. a kind of 3D Method of printing as claimed in claim 6, it is characterised in that: step 1) in, printed material includes two kinds, is solution A and B solution respectively, and the mass ratio of described solution A and B solution is 3: 1～5: 1；
Described solution A is to be that 30～40% Ludox and mass concentration 40-60% melmac aqueous solution under 40～60 DEG C condition are sufficiently stirred for mixing generate poly-silicon polyimide resin solution that mass concentration be 45～85% in mass ratio at 2: 1: 1 by Lauxite, mass concentration；
Described B solution is to be mixed by the calcium chloride water that mass concentration is 4%～10% and ammonium persulfate aqueous solution 1: 1 room temperature in mass ratio that mass concentration is 1%～2%.
8. a kind of 3D Method of printing as claimed in claim 6, it is characterised in that: step 3) in, the laying depth of black onyx powder is 200um.
9. a kind of 3D Method of printing as claimed in claim 7, it is characterized in that: described solution A, B solution two solution are atomized into the droplet that diameter is 40um respectively, then respectively through the first feeding-passage and the second feeding-passage, the solution A after atomization and B solution are entered hybrid chamber to mix, it is ejected into from jet expansion with the droplet of diameter about 40um under the effect of mixed solution high pressure draught in inlet channel and is equipped with black onyx powder the printer model base plate that heats, successively molding superposition, until completing printer model.
10. a kind of 3D Method of printing as claimed in claim 9, it is characterised in that: the heating-up temperature of described printer model base plate is 30～40 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610231785.2A CN105773973B (en) | 2016-04-09 | 2016-04-09 | 3D printing spray nozzle device and 3D printing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610231785.2A CN105773973B (en) | 2016-04-09 | 2016-04-09 | 3D printing spray nozzle device and 3D printing method |
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| CN105773973A true CN105773973A (en) | 2016-07-20 |
| CN105773973B CN105773973B (en) | 2018-09-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966205A (en) * | 1988-02-02 | 1990-10-30 | Pola Chemical Industries Ltd. | Method and apparatus for charging transparent material |
| US20040251581A1 (en) * | 2003-06-16 | 2004-12-16 | Jang Bor Z. | Micro- and nano-fabrication using focused plasma assisted vapor deposition |
| CN104924614A (en) * | 2015-06-08 | 2015-09-23 | 浙江大学 | Rotary switching biological 3D printing sprayer for multi-material printing and rotary switching biological 3D printing method |
| CN205058637U (en) * | 2015-10-30 | 2016-03-02 | 兰红波 | Multiple dimensioned 3D printing device of single many materials of shower nozzle |
| CN205767525U (en) * | 2016-04-09 | 2016-12-07 | 张晓军 | A kind of 3D printing nozzle device |
-
2016
- 2016-04-09 CN CN201610231785.2A patent/CN105773973B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966205A (en) * | 1988-02-02 | 1990-10-30 | Pola Chemical Industries Ltd. | Method and apparatus for charging transparent material |
| US20040251581A1 (en) * | 2003-06-16 | 2004-12-16 | Jang Bor Z. | Micro- and nano-fabrication using focused plasma assisted vapor deposition |
| CN104924614A (en) * | 2015-06-08 | 2015-09-23 | 浙江大学 | Rotary switching biological 3D printing sprayer for multi-material printing and rotary switching biological 3D printing method |
| CN205058637U (en) * | 2015-10-30 | 2016-03-02 | 兰红波 | Multiple dimensioned 3D printing device of single many materials of shower nozzle |
| CN205767525U (en) * | 2016-04-09 | 2016-12-07 | 张晓军 | A kind of 3D printing nozzle device |
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| CN105773973B (en) | 2018-09-04 |
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Effective date of registration: 20180621 Address after: 321200 west side of No. 7 workshop of Wuyi science and Technology City, No. 316 Wujiang Road, Wuyi, Zhejiang. Applicant after: Wuyi Rui sting Nano Technology Co. Ltd. D Address before: 321200 4 blocks 2 unit 401, spring river garden, Wuyi County, Zhejiang Province, 401 Applicant before: Zhang Xiaojun |
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