CN204936505U - A kind of variable nozzle for micro mist jet printing - Google Patents
A kind of variable nozzle for micro mist jet printing Download PDFInfo
- Publication number
- CN204936505U CN204936505U CN201520693074.8U CN201520693074U CN204936505U CN 204936505 U CN204936505 U CN 204936505U CN 201520693074 U CN201520693074 U CN 201520693074U CN 204936505 U CN204936505 U CN 204936505U
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- nozzle
- micro mist
- printing
- jet printing
- variable
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Abstract
The utility model discloses a kind of variable nozzle for micro mist jet printing, it comprises powder joint, powder joint is connected on powder feeding jet pipe by threaded engagement, powder feeding jet pipe is embedded into printing nozzle inside and connects into entirety by holding screw after installation Gask-O-Seal, printing nozzle is inserted on the draw-in groove of push-in clamp body also fixing by the connecting plate of nozzle body, is provided with gas connection before the nozzle body of printing nozzle.The purpose of this utility model is for existing micro mist jet printing nozzle in actual use, easily result in blockage, structure be more complicated, spray intensity, air velocity and effectively projected area be difficult to the deficiency simultaneously taken into account, a kind of variable nozzle for micro mist jet printing is provided.
Description
Technical field
The utility model relates to a kind of nozzle, specifically relates to a kind of variable cross-section superonic flow nozzzle for micro mist jet printing.
Background technology
Jet printing technology is that the one proposed on the basis of 3D printing technique recently increases material manufacture solution, aerodynamics or principle of mechanical vibration is mainly utilized to focus on the deposition of accurate Nano/micron level material, normally by material to be formed after corresponding pre-treatment, it directly printed on carrier shaping by printer, the shape and size of formed body are controlled by computer.It is shaping that it can be used for block materials, is more suitable for thin-film material shaping. and jet printing is a kind of contactless print procedure, and the precision of formed body is controlled by nozzle diameter, is generally 25-75um.Conventional jet printing material is " ink " that utilize particular formulation.
Micro mist jet printing technology is a kind of based on aerodynamic principle, take powder body material as ejectisome, by high pressure draught, powder is accelerated to its critical speed, impact the novel injection printing technique being deposited on and printing on matrix, he has, and shaping efficiency is high, speed is fast, product bond strength advantages of higher.
Nozzle is as an equipment vital in whole micro mist jet printing technology, primary responsibility realizes the acceleration to printing powder body material, and the control to jet printing characteristic point, but actual use in mostly there will be and print powder and easily stick to its throat not easy to clean, formed and block, have a strong impact on the use of equipment.A lot of researcher has made a lot of effort for solving this difficult problem, and achieve good achievement, the such as patent No. 200510083138.3 discloses a kind of cold spraying nozzle, it has the convergence introducing portion of sectional area convergence, the throat be connected with convergent part and export department, playpipe etc., for preventing blocking, its playpipe is positioned at throat or exceedes the export department of this throat, the patent No. 200510030207.4 and 00253384.7 all discloses a kind of cold spraying nozzle, and these nozzles to some extent solve the sticky larynx problem in nozzle use procedure.But, because adopt independent metal powder feeding pipe to carry out coaxial powder-feeding, the sealing effectiveness of whole nozzle will certainly be affected, add the complexity of nozzle arrangements, simultaneously, the design of jet area often only take into account the one side of spraying intensity (air velocity) and effective projected area, be difficult to reach desirable printing effect in actual use.Obviously, existing nozzle is difficult to meet the demands, and is necessary to develop a kind of novel nozzle.
Utility model content
The purpose of this utility model is for existing micro mist jet printing nozzle in actual use, easily result in blockage, structure is more complicated, spray intensity (air velocity) and effective projected area is difficult to the deficiency simultaneously taken into account, a kind of variable nozzle for micro mist jet printing is provided.
In order to realize above-mentioned technical characteristic, the purpose of this utility model is achieved in that a kind of variable nozzle for micro mist jet printing, it comprises powder joint, powder joint is connected on powder feeding jet pipe by threaded engagement, powder feeding jet pipe is embedded into printing nozzle inside and connects into entirety by holding screw after installation Gask-O-Seal, printing nozzle is inserted on the draw-in groove of push-in clamp body also fixing by the connecting plate of nozzle body, is provided with gas connection before the nozzle body of printing nozzle.
The left and right side of described printing nozzle is symmetrically arranged with pressure probe interface and temp probe interface.
Described nozzle body inside is provided with air chamber body, and converging portion is connected with air chamber body, and the afterbody of converging portion is provided with throat, and throat is connected with divergent section, is connected with straight length after divergent section.
Described straight length is variable cross section-type distribution.
The distribution of described variable cross section-type is under cross-sectional area one stable condition of straight length, straight length inlet portion for circular, outlet section be rectangle or ellipse, entrance to outlet section for seamlessly transitting.
Described powder feeding jet pipe is monolithic construction.
The utility model has following beneficial effect:
1, described a kind of variable nozzle for micro mist jet printing, agent structure comprises push-in clamp body, powder joint, trip bolt, powder feeding jet pipe, Gask-O-Seal, gas connection, printing nozzle etc., structure is comparatively compact, is convenient to processing and assembling, reduces costs.
2, described a kind of variable nozzle for micro mist jet printing, its main body printing nozzle comprises nozzle body, air chamber body, converging portion, throat, divergent section, straight length, straight length is variable cross section-type distribution, taken into account the guarantee of spraying intensity and effective projected area simultaneously, in addition, also there is throughput less, the advantage that supersonic speed segment distance is long.
3, the superonic flow nozzzle that described a kind of micro-injection prints, adopt all-in-one-piece powder feeding jet pipe, coordinate the use of Gask-O-Seal, and have that structure is simple, the advantage of good sealing effect, meanwhile, also can effectively prevent spraying powder in the choking phenomenon of De Laval noz(zle) throat.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the structural representation of the variable nozzle for micro-injection printing.
Fig. 2 is for being push-in clamp body structural representation.
Fig. 3 is the structural representation of gas connection.
Fig. 4 is the structural representation of powder feeding jet pipe.
Fig. 5 is the structural representation of printing nozzle.
Fig. 6 is the main sectional view of outlet for the variable nozzle of rectangle.
Fig. 7 is the top view of outlet for the variable nozzle of rectangle.
Fig. 8 is the structural representation of outlet for oval variable nozzle.
Fig. 9 is the top view of outlet for oval variable nozzle.
In figure: push-in clamp body 1, powder joint 2, trip bolt 3, powder feeding jet pipe 4, Gask-O-Seal 5, gas connection 6, printing nozzle 7, nozzle body 7-1, air chamber body 7-2, converging portion 7-3, pressure probe interface 7-4, temp probe interface 7-5, throat 7-6, divergent section 7-7, straight length 7-8.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
Embodiment 1
As shown in figs. 1-7, a kind of variable nozzle for micro mist jet printing, it comprises powder joint 2, powder joint 2 is connected on powder feeding jet pipe 4 by threaded engagement, powder feeding jet pipe 4 is embedded into printing nozzle 7 inside and connects into entirety by holding screw 3 after installation Gask-O-Seal 5, printing nozzle 7 to be inserted on the draw-in groove 1-1 of push-in clamp body 1 by the connecting plate of nozzle body 7-1 and fixing, is provided with gas connection 6 before the nozzle body 7-1 of printing nozzle 7.
Further, the left and right side of described printing nozzle 7 is symmetrically arranged with pressure probe interface 7-4 and temp probe interface 7-5.Setting pressure can be facilitated to pop one's head in thus be convenient to measurement gas pressure by pressure probe interface 7-4, conveniently temp probe can be installed by temp probe interface 7-5 thus be convenient to measurement gas temperature.
Further, described nozzle body 7-1 inside is provided with air chamber body 7-2, and converging portion 7-3 is connected with air chamber body 7-2, and the afterbody of converging portion 7-3 is provided with throat 7-6, and throat 7-6 is connected with divergent section 7-7, is connected with straight length 7-8 after divergent section 7-7.Effectively nozzle choking problems can be solved by said nozzle structural design.
Further, described straight length 7-8 is variable cross section-type distribution.
Further, the distribution of described variable cross section-type is under cross-sectional area one stable condition of straight length 7-8, straight length inlet portion for circular, outlet section be rectangle, entrance to outlet section for seamlessly transitting.
Further, described powder feeding jet pipe 4 is monolithic construction.
The utility model has carried out structural design according to superonic flow nozzzle principle.Easily result in blockage for the existing nozzle of solution, structure is more complicated, take into account powder jetting intensity simultaneously, the reason of air velocity and effective projected area, on the basis of common De Laval noz(zle) four-part form structure, the structure of De Laval noz(zle) is redesigned, first the structure of present metal powder feeding jet pipe is the improvement, by simple straight tube powder feeding, change monoblock type powder feeding jet pipe into, coordinate the use of Gask-O-Seal, effectively solve the obstructing problem in nozzle use procedure, next promotes for its straight length to have gone optimal design, under guarantee straight length import sectional area and discharge area situation of the same size, designing the import of nozzle straight length is circular cross-section, radius is 1.5mm, outlet is square-section, long is 2.25mm, wide is 1mm, in addition, nozzle converging portion length is 10-30mm, diameter is 12mm, itself and jet pipe central axis angle are 3-10 °, throat diameter is 2.8mm, divergent section length is 10-30mm, diameter is 5mm, after experiment proves to use the rectangle variable cross section-type straight length of monoblock type powder feeding jet pipe and redesign again instead, effectively solve the sticky larynx problem of nozzle use procedure, be 0.6MPa in inlet pressure, powder sending quantity is 0.000Kg/S, printing distance is under the condition of 10mm, deposition efficiency is greater than 70%, and the effective projected area radius of characteristic point of fixing a point to print is 4mm, thickness is 5mm, describe the reasonable part of the utility model design.
Embodiment 2
As Figure 8-9, nozzle basic structure is with embodiment 1, just promote for its straight length and gone optimal design, under guarantee straight length import sectional area and discharge area situation of the same size, designing the import of nozzle straight length is circular cross-section, radius is 1.5mm, outlet is elliptic cross-section, the major axis of elliptic cross-section is 2.25mm, minor axis is 1mm, in addition, nozzle converging portion length is 12mm, diameter is 12mm, itself and jet pipe central axis angle are 3-10 °, throat diameter is 2.8mm, divergent section length is 13mm, diameter is 5mm, after experiment proves to use the oval variable cross section-type straight length of monoblock type powder feeding jet pipe and redesign again instead, effectively solve the sticky larynx problem of nozzle use procedure, be 0.6MPa in inlet pressure, powder sending quantity is 0.000Kg/S, printing distance is under the condition of 10mm, deposition efficiency is greater than 85%, and the effective projected area radius of characteristic point of fixing a point to print is 4.3mm, thickness is 5mm, describe the reasonable part of the utility model design, also prove that employing straight length is the nozzle in elliptical deformation cross section simultaneously, its practical effect is better than the nozzle of rectangle variable cross-section.
Above-described embodiment is used for explaining and the utility model is described; instead of the utility model is limited; in the protection domain of spirit of the present utility model and claim, to the novel any amendment made of this practical machine and change, all fall into protection domain of the present utility model.
Claims (6)
1. the variable nozzle for micro mist jet printing, it is characterized in that: it comprises powder joint (2), powder joint (2) is connected on powder feeding jet pipe (4) by threaded engagement, powder feeding jet pipe (4) is embedded into the inner holding screw (3) that also passes through of printing nozzle (7) and connects into entirety after installation Gask-O-Seal (5), the draw-in groove (1-1) that printing nozzle (7) is inserted to push-in clamp body (1) by the connecting plate of nozzle body (7-1) is gone up and fixes, and the nozzle body (7-1) of printing nozzle (7) is provided with gas connection (6) above.
2. a kind of variable nozzle for micro mist jet printing according to claim 1, is characterized in that: the left and right side of described printing nozzle (7) is symmetrically arranged with pressure probe interface (7-4) and temp probe interface (7-5).
3. a kind of variable nozzle for micro mist jet printing according to claim 1, it is characterized in that: described nozzle body (7-1) inside is provided with air chamber body (7-2), converging portion (7-3) is connected with air chamber body (7-2), the afterbody of converging portion (7-3) is provided with throat (7-6), throat (7-6) is connected with divergent section (7-7), is connected with straight length (7-8) after divergent section (7-7).
4. a kind of variable nozzle for micro mist jet printing according to claim 3, is characterized in that: described straight length (7-8) is variable cross section-type distribution.
5. a kind of variable nozzle for micro mist jet printing according to claim 4, it is characterized in that: described variable cross section-type distribution is under cross-sectional area one stable condition of straight length (7-8), straight length inlet portion for circular, outlet section be rectangle or ellipse, entrance to outlet section for seamlessly transitting.
6. a kind of variable nozzle for micro mist jet printing according to claim 1, is characterized in that: described powder feeding jet pipe (4) is monolithic construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520693074.8U CN204936505U (en) | 2015-09-09 | 2015-09-09 | A kind of variable nozzle for micro mist jet printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520693074.8U CN204936505U (en) | 2015-09-09 | 2015-09-09 | A kind of variable nozzle for micro mist jet printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204936505U true CN204936505U (en) | 2016-01-06 |
Family
ID=55003954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520693074.8U Expired - Fee Related CN204936505U (en) | 2015-09-09 | 2015-09-09 | A kind of variable nozzle for micro mist jet printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204936505U (en) |
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2015
- 2015-09-09 CN CN201520693074.8U patent/CN204936505U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160909 |