CN109774124A - A kind of resin melting appositional pattern 3D printer of inert atmosphere - Google Patents
A kind of resin melting appositional pattern 3D printer of inert atmosphere Download PDFInfo
- Publication number
- CN109774124A CN109774124A CN201910173285.1A CN201910173285A CN109774124A CN 109774124 A CN109774124 A CN 109774124A CN 201910173285 A CN201910173285 A CN 201910173285A CN 109774124 A CN109774124 A CN 109774124A
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- gas
- printer
- resin melting
- inert atmosphere
- appositional pattern
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Abstract
The invention discloses a kind of resin melting appositional pattern 3D printers of inert atmosphere, belong to advanced manufacturing technology field, can be realized progress resin 3D printing under inert gas protection, improve the mechanical property of finished article.The present invention improves existing resin melting appositional pattern 3D printer on the basis of fusion sediment 3D printing technique, including following components: (1) a gas backstreaming pipe is designed outside the radiator fan of existing printer；(2) gas backstreaming pipe will have relatively good heat sinking function；(3) increase an inert gas import on the basis of existing 3D printer.The invention is simple and feasible, has a extensive future.
Description
Technical field
The invention belongs to advanced manufacturing technology fields, are related to a kind of resin melting appositional pattern 3D printer of inert atmosphere.
Background technique
With the fast development of 3D printing technique, requirement of the people to 3D printing product strength is also higher and higher.Hair at present
Opening up more mature 3D printing technique is fusion sediment technology, it is that silk material made of some thermoplastic resins is sent into printing spray
In head, a certain amount of molten resin is then squeezed out, by the layer upon layer between melt filament, forms entity after cooling and shaping.
Fusion sediment technology has the characteristics that printing device is at low cost, easy to operate, stock utilization is high, without chemical change process, and
And it is environmentally protective.Therefore fusion sediment 3D printing equipment is typically all the 3D printing equipment and 3D printing equipment of low side introduction
Popular and universalness major impetus.But the mechanical property of its product is low compared with the performance of general traditional processing technology product
Very much, the inter-layer bonding force for being particularly due to its product will be markedly less than bulk strength, and leading to it, performance is bad in a certain direction
Change seriously, the decline of mechanical property often exceeds 50%.The intensity of existing resin 3D printing product be no longer satisfied its
The use in the fields such as automobile, medical treatment, mold manufacture, in many occasions as just model display.Its root be that it is this at
The inter-layer bonding force of type mode is poor.Its reason is analyzed, discovery one of the main reasons is the performance change of macromolecule surface.Macromolecule
In the molten state, the surface for being exposed to air atmosphere is easy to that oxidation occurs, and affects the interface binding power with other fuses.
Summary of the invention
The present invention provides a kind of resin melting appositional pattern 3D printers of inert atmosphere, high to melting using inert gas
Molecular surface is protected, its inter-layer bonding force is improved, to improve the mechanical property of polymer-based 3D printing device, while again
Take into account control production cost.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of resin melting appositional pattern 3D printer of inert atmosphere, on the basis of existing 3D printer, carried out with
The invention of lower part designs:
(1) a gas backstreaming pipe is designed outside the radiator fan of existing printer；
(2) gas backstreaming pipe will have relatively good heat sinking function；
(3) increase an inert gas import on the basis of existing 3D printer.
The beneficial effects of the invention are as follows the resin melting appositional pattern 3D printers for devising a kind of inert atmosphere, pass through inertia
The surface oxidation for being protected from macromolecule fuse of gas, promotes the melt binding of interlayer, to improve resin print device
Performance.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described.
Fig. 1 be inert atmosphere resin melting appositional pattern 3D printer schematic diagram (1 is 3D printer cabinet, and 2 be air draft
Fan, 3 be gas backstreaming pipe, and 4 be reflux gas air inlet, and 5 be inert gas air inlet).Fig. 2 is the schematic diagram of printed sample.
J is spray head discharging direction in Fig. 2, and 1 is perpendicular to the sample of spray head discharging direction, and 2 be the sample for being parallel to spray head discharging direction.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Present invention is further described in detail for formula, and embodiment 1 is the test sample prepared with current fusion sediment 3D printer, as
Comparative example, embodiment 2 prepare test sample using equipment of the invention.
Embodiment 1: using polylactic acid as printed material, the tensile test specimens 3D model of standard is drawn with solidwokers,
And the file of .stl format is saved as .stl file is then imported into software, print parameters thickness 0.1mm, temperature 210 are set
DEG C, print speed 30mm/s, print perpendicular to spray head discharging direction and the tensile test specimens for being parallel to spray head discharging direction.Such as
Shown in Fig. 2.
Embodiment 2: using polylactic acid as printed material, the tensile test specimens 3D model of standard is drawn with solidwokers,
And the file of .stl format is saved as .stl file is then imported into software, print parameters thickness 0.1mm, temperature 210 are set
DEG C, print speed 30mm/s using printer as shown in Figure 1 be passed through nitrogen in advance, after starting printing, continue to be passed through small stream
The nitrogen of amount is printed perpendicular to spray head discharging direction and the tensile test specimens for being parallel to spray head discharging direction.As shown in Figure 2.
See Table 1 for details for the test data of above-described embodiment 1 and 2.
The tensile strength ratio of 1 embodiment test sample of table
| Embodiment | The tensile strength (MPa) of sample 1 | The tensile strength (MPa) of sample 2 |
| 1 | 42 | 26 |
| 2 | 44 | 36 |
1 and 2 test data is it is found that using inert atmosphere fusion sediment 3D printer of the invention through the foregoing embodiment
The tensile strength of device obtained improves 30% or more being parallel to spray head discharging direction.
The technical means disclosed in the embodiments of the present invention is not limited to the technical means disclosed in the above technical means, and further includes
Technical solution consisting of any combination of the above technical features.
Claims (5)
1. a kind of resin melting appositional pattern 3D printer of inert atmosphere characterized by comprising
(1) existing resin melting appositional pattern 3D printer is usually provided with to reduce melting printed material bring heat
Exhaust outlet is taken heat in external environment to by way of air blast.Unlike the present invention, the gas of exhaust outlet discharge can be with
It is come back in 3D printer cabinet by gas backstreaming pipe；
(2) gas backstreaming pipe has preferable heat sinking function；
(3) increase an inert gas import, to supplement the inert gas escaped from printer cabinet gap.
2. a kind of resin melting appositional pattern 3D printer of inert atmosphere described in accordance with the claim 1, which is characterized in that inertia
Gas refers to the gas for being not easy to chemically react with molten state macromolecule printed material surface, including nitrogen, helium, neon
Gas, Krypton, argon gas, xenon etc..
3. a kind of resin melting appositional pattern 3D printer of inert atmosphere described in accordance with the claim 1, which is characterized in that from row
The gas of air port discharge does not diffuse into air, but is returned in 3D printing cabinet by gas backstreaming pipe, saves indifferent gas
The dosage of body, reduces cost.
4. a kind of resin melting appositional pattern 3D printer of inert atmosphere described in accordance with the claim 1, which is characterized in that gas
The return pipe material silver pipe excellent using heating conduction, is increased the length of pipeline by S type bend mode, carried out to reflux gas
Heat dissipation.
5. a kind of resin melting appositional pattern 3D printer of inert atmosphere described in accordance with the claim 1, which is characterized in that external
Inert gas source realizes that the gas of small flow supplements by the air inlet of 3D printer cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910173285.1A CN109774124A (en) | 2019-03-08 | 2019-03-08 | A kind of resin melting appositional pattern 3D printer of inert atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910173285.1A CN109774124A (en) | 2019-03-08 | 2019-03-08 | A kind of resin melting appositional pattern 3D printer of inert atmosphere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109774124A true CN109774124A (en) | 2019-05-21 |
Family
ID=66487692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910173285.1A Pending CN109774124A (en) | 2019-03-08 | 2019-03-08 | A kind of resin melting appositional pattern 3D printer of inert atmosphere |
Country Status (1)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618751A (en) * | 2015-12-16 | 2016-06-01 | 伊特克斯惰性气体系统（北京）有限公司 | Selective laser melting system protected by ultra-pure atmosphere |
| CN106738911A (en) * | 2017-01-20 | 2017-05-31 | 深圳市贝优通新能源技术开发有限公司 | A kind of 3D printer with anaerobic printing environment |
| CN206242496U (en) * | 2016-12-10 | 2017-06-13 | 硕威三维打印科技（上海）有限公司 | A kind of 3D printer insulation bin device with nitrogen circulation |
| CN207842069U (en) * | 2018-01-29 | 2018-09-11 | 湖北恒维通智能科技有限公司 | A kind of cast type 3D printer |
| EP3434396A1 (en) * | 2017-07-24 | 2019-01-30 | United Technologies Corporation | Pre-fusion laser sintering for metal powder stabilization during additive manufacturing |
| CN208542955U (en) * | 2018-07-13 | 2019-02-26 | 陕西恒通智能机器有限公司 | A kind of molding room's purification system for SLM 3D printer |
-
2019
- 2019-03-08 CN CN201910173285.1A patent/CN109774124A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618751A (en) * | 2015-12-16 | 2016-06-01 | 伊特克斯惰性气体系统（北京）有限公司 | Selective laser melting system protected by ultra-pure atmosphere |
| CN206242496U (en) * | 2016-12-10 | 2017-06-13 | 硕威三维打印科技（上海）有限公司 | A kind of 3D printer insulation bin device with nitrogen circulation |
| CN106738911A (en) * | 2017-01-20 | 2017-05-31 | 深圳市贝优通新能源技术开发有限公司 | A kind of 3D printer with anaerobic printing environment |
| EP3434396A1 (en) * | 2017-07-24 | 2019-01-30 | United Technologies Corporation | Pre-fusion laser sintering for metal powder stabilization during additive manufacturing |
| CN207842069U (en) * | 2018-01-29 | 2018-09-11 | 湖北恒维通智能科技有限公司 | A kind of cast type 3D printer |
| CN208542955U (en) * | 2018-07-13 | 2019-02-26 | 陕西恒通智能机器有限公司 | A kind of molding room's purification system for SLM 3D printer |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190521 |
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| WD01 | Invention patent application deemed withdrawn after publication |