CN110497614B - Shower nozzle for 3D printing equipment and corresponding printing method - Google Patents
Shower nozzle for 3D printing equipment and corresponding printing method Download PDFInfo
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- CN110497614B CN110497614B CN201910137024.4A CN201910137024A CN110497614B CN 110497614 B CN110497614 B CN 110497614B CN 201910137024 A CN201910137024 A CN 201910137024A CN 110497614 B CN110497614 B CN 110497614B
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- 238000007639 printing Methods 0.000 title claims abstract description 102
- 238000010146 3D printing Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 68
- 238000007766 curtain coating Methods 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 37
- 238000000576 coating method Methods 0.000 claims abstract description 37
- 238000005507 spraying Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 15
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 241001233242 Lontra Species 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000000016 photochemical curing Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
- B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
- B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
-
- 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
- B33Y10/00—Processes of additive manufacturing
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
Abstract
The invention provides a shower nozzle for 3D printing equipment and a corresponding printing method, which comprises the following steps: the spray coating cavity is of a cavity structure, a feeding hole for introducing printing raw materials is formed in the side face of the spray coating cavity, a slit is formed in the bottom of the spray coating cavity, the slit is surrounded by the bottom of the spray coating cavity, and a connecting plate for connecting the spray coating cavity is fixedly arranged at the bottom of the spray coating cavity; the number of the shower coating knives is 2, one shower coating knife is short, and the other shower coating knife is long; the two curtain coating knives are fixed below the connecting plate and are respectively arranged at two sides of the slit; the tensioning assembly comprises a plurality of tensioning blocks, and the tensioning blocks are arranged on the outer side of one of the shower coating knives. According to the shower nozzle for the shower coating, when the shower nozzle is used for 3D printing, printing raw materials are shower coated on the screen plate, the printing raw material layer can be directly paved, the doctor blade is prevented from being scraped, printing can be performed after shower coating, the 3D printing efficiency is effectively improved, and the shower nozzle for the shower coating has a wide market application prospect.
Description
Technical Field
The invention relates to a shower nozzle for 3D printing equipment and a corresponding printing method.
Background
3D printing is a rapid printing forming technology, and at present, the 3D printing technology is popularized in industrial production and manufacturing; the product is highly integrated in digital design, manufacture and analysis, and the more the product has a complex structure and high added value of raw materials, the more the advantage of rapid and efficient forming is obvious.
When the 3D printing equipment prints, the three-dimensional model of the printed matter is required to be firstly subjected to software slicing to form a plurality of digital slices, and then the raw materials are correspondingly stacked layer by layer according to the slice information through 3D printing, and are solidified and formed; after all the digital slices are overlapped, forming printed matters with finished printing, and finishing the printing; the thickness of the printing raw material corresponds to the thickness of each layer of printed matter, and thus, in the 3D printing process, it is generally necessary to print after the printing raw material is scraped off using a doctor blade.
Chinese patent 201510234338.8 discloses a quick photocuring shower nozzle for 3D printing apparatus, mainly include photocuring shower nozzle shell, feed cylinder part, pointolite part, reflector angle frame elevating system, wherein feed cylinder part mainly includes the feed cylinder, connect the point gum syringe needle in the feed cylinder bottom, locate the material barrel cover on feed cylinder top, pointolite part mainly includes laser pointolite, light source mount, reflector angle frame elevating system mainly includes lead screw, adjust knob, slide, slider, screw.
Chinese patent 201810104598.7 discloses a photo-curing forming device comprising a liquid storage cylinder storing raw materials for printing three-dimensional objects; the liquid spreading device is positioned above the liquid storage cylinder and can horizontally move on the working plane, and is provided with a spray head for spraying liquid and at least one scraper for spreading the liquid; the base plate is arranged in the liquid storage cylinder and can vertically move on the liquid storage cylinder, so that the base plate is driven to move downwards for a preset distance when printing of one layer of three-dimensional object is completed.
The printing process is improved in the scheme, but the step of scraping the printing raw material by using the scraper is not completely avoided, the height of the screen plate is required to be adjusted after each layer is printed by using the scraper in the process of scraping the printing raw material layer, the next layer can be printed after the scraping, the time length in the middle process is long, the adhesion between the printed matters of each layer is not facilitated, the mechanical property of the printed matters is influenced, and meanwhile, the improvement of the printing efficiency is also greatly limited.
Therefore, how to provide a shower nozzle and a corresponding printing method that do not need to be scraped and can improve 3D printing efficiency becomes a problem to be solved in the industry.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a shower nozzle for 3D printing equipment and a corresponding printing method, wherein a doctor is not required to be used for scraping a printing raw material layer in the printing process, so that the 3D printing efficiency is greatly improved.
To achieve the above object, according to an aspect of the present invention, there is provided a shower head for a 3D printing apparatus, comprising:
The spray coating cavity is of a cavity structure, a feed inlet for introducing the printing raw materials is arranged on the side face of the spray coating cavity, a slit for spraying the printing raw materials is formed at the bottom of the spray coating cavity, a connecting plate for connecting the spray coating cavity is fixedly arranged at the bottom of the spray coating cavity around the slit;
the number of the shower coating knives is 2, one shower coating knife is short, and the other shower coating knife is long; the two curtain coating knives are fixed below the connecting plate and are respectively arranged at two sides of the slit;
The tensioning assembly comprises a plurality of tensioning blocks, and the tensioning blocks are arranged on the outer side of one of the shower coating knives.
In the invention, printing raw materials are pumped into the curtain coating cavity, and then the printing raw materials are downwards curtain coated out through the slit at the bottom of the curtain coating cavity; further, in order to ensure that the printing raw materials are uniformly shower-coated and the required layer thickness is met, two shower-coating cutters which are oppositely arranged are arranged below the slit to drain the printing raw materials, so that the printing raw materials are ensured to flow out in a certain thickness and are not easy to agglomerate and aggregate; simultaneously, the tensioning assembly is used for further controlling the drainage process.
According to the shower nozzle for shower coating, when the shower nozzle is used for 3D printing, printing raw materials are shower coated on the screen plate, and the printing raw material layer can be directly paved, so that the operation of scraping by a scraper is avoided, printing can be performed after shower coating, and the 3D printing efficiency is effectively improved; in the field of 3D printing, the printing device has a great pushing effect on improving the printing efficiency of 3D printing equipment, and has a wide market application prospect.
According to another specific embodiment of the invention, the shower coating cavity is of a plate-shaped structure, the front side surface of the shower coating cavity is an inclined plate, and the rear side surface of the shower coating cavity is a vertical plate. Through the design of one side swash plate, one side riser for printing raw and other materials can be along the drainage of swash plate, drenches along the swash plate, plays the cushioning effect to the drenching of printing raw and other materials, further ensures the even drenching of printing raw and other materials.
According to another specific embodiment of the invention, an extension plate is arranged below the inclined plate, and the extension plate and the vertical plate stretch the slit to form a slit channel; the guide of the printing raw material in the vertical direction is prolonged, and the printing raw material is ensured to be sprayed out in a preset thickness. The vertical plate and the connecting plate are integrally formed, and the extension plate penetrates through the middle of the connecting plate and is fixedly connected with the connecting plate. The inclined plate and the extension plate are integrally formed, so that the printing raw materials are drained, the connection with the connecting plate is avoided, a rough surface is formed, and the leaching effect of the printing raw materials is affected.
According to another embodiment of the invention, the tensioning assembly is arranged outside the short curtain coating knife. And (3) tensioning the whole of the curtain coating knife, and controlling the drainage precision.
According to another specific embodiment of the invention, both ends of the slit are provided with drainage plates, and the drainage plates are fixed on the connecting plate; the drainage plate is of a sheet-shaped structure, and the width of the drainage plate is larger than that of the slit. The drainage plate includes three sections kinks, from last to down, outwards slope portion, inwards slope portion, vertical portion, outwards slope portion makes the printing raw and other materials free of optional position (including the both ends department of slit) drench, inwards slope portion makes the printing raw and other materials at both ends have certain buffering, avoids the diffusion, simultaneously, carries out effectual management and control to the width of the printing raw and other materials that drenches, and vertical portion makes printing raw and other materials downwards stable drenching to the otter board in vertical direction.
According to another embodiment of the invention, the length of the slit is adapted to the width of the screen on the 3D printing device; the width of the slit is adapted to the layer thickness printed during 3D printing.
According to another specific embodiment of the invention, the shower nozzle further comprises two air knives, and the two air knives are respectively fixed on two sides of the connecting plate through connecting arms.
In another aspect of the present invention, a printing method for performing 3D printing using the shower nozzle is provided, including the following steps:
S1, connecting a curtain coating cavity with a material pump, and pumping printing raw materials for 3D printing into the curtain coating cavity by the material pump;
s2, adjusting the height of the screen plate, driving the curtain coating cavity to move on the screen plate from front to back once, and spraying out printing raw materials from the curtain coating cavity in the process of moving the curtain coating cavity to form a printing raw material layer with uniform thickness;
s3, the laser module emits laser with preset wavelength, and the raw material layer is sintered and printed according to a preset path to finish printing of one layer;
S4, repeating the steps until the printed matter is printed.
According to another embodiment of the invention, the thickness of the layer of the flow coated printing stock is adjusted by controlling the slit width of the flow coating chamber.
According to another embodiment of the present invention, in the process of performing step S2, the method further includes the following steps: in the process of printing raw material curtain coating, foam in the printing raw material is removed by an air knife, and a printing raw material layer is paved.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a shower head for a 3D printing apparatus of embodiment 1;
fig. 2 is another structural schematic diagram of a shower head for a 3D printing apparatus of embodiment 1;
FIG. 3 is a schematic cross-sectional view of a shower head for a 3D printing apparatus of example 1;
FIG. 4 is a schematic view of the mounting connection of a shower head for a 3D printing apparatus of example 1;
Fig. 5 is another mounting connection schematic of the shower head for the 3D printing apparatus of embodiment 1.
Detailed Description
Example 1
The present embodiment provides a shower nozzle for a 3D printing apparatus, as shown in fig. 1 to 5, which includes: a curtain coating cavity 1 for containing printing raw materials, a curtain coating knife, a tensioning component 4 and an air knife 6.
The shower coating cavity 1 is of a cavity structure, a feeding hole 104 for introducing printing raw materials is formed in the side face of the shower coating cavity 1, a slit for spraying the printing raw materials is formed in the bottom of the shower coating cavity, and a connecting plate 2 for connecting the shower coating cavity 1 is fixedly arranged at the bottom of the shower coating cavity 1 around the slit; the shower coating cavity 1 is of a plate-shaped structure, the front side surface of the shower coating cavity is provided with an inclined plate 102, and the rear side surface of the shower coating cavity is provided with a vertical plate 101. Through the design of one side swash plate 102, one side riser 101 for printing raw materials can be along swash plate 102 drenches along the drainage of swash plate 102, plays the cushioning effect to the drenching of printing raw materials, further ensures the even drenching of printing raw materials.
An extension plate 103 is arranged below the sloping plate 102, and the extension plate 103 and the vertical plate 101 stretch the slit to form a slit channel; the guide of the printing raw material in the vertical direction is prolonged, and the printing raw material is ensured to be sprayed out in a preset thickness. The vertical plate 101 is integrally formed with the connecting plate 2, and the extension plate 103 passes through the middle of the connecting plate 2 and is flush with the bottom of the connecting plate 2. The inclined plate 102 and the extension plate 103 are integrally formed, so that the printing raw material is drained, the connection with the connecting plate 2 is avoided, a rough surface is formed, and the leaching effect of the printing raw material is affected.
Both ends of the slit are provided with drainage plates 8, and the drainage plates 8 are fixed on the connecting plate 2; the drainage plate 8 is of a sheet-like structure, and the width of the drainage plate is larger than that of the slit. The drainage plate 8 includes three sections kinks, from last to down, outwards slope portion, inwards slope portion, vertical portion, outwards slope portion makes the printing raw and other materials free of optional position (including the both ends department of slit) drench, inwards slope portion makes the printing raw and other materials at both ends have certain buffering, avoids the diffusion, simultaneously, carries out effectual management and control to the width of the printing raw and other materials that drenches, and vertical portion makes printing raw and other materials downwards stable drenching and scribble on the otter board in vertical direction. After the printing raw material flows out from the slit channel, the printing raw material is drained through the drainage plate 8 to form a water curtain with uniform thickness, and the water curtain is uniformly coated on the screen plate.
The length of the slit is adapted to the width of the screen plate on the 3D printing device; the width of the slit is adapted to the layer thickness printed during 3D printing.
The number of the shower coating knives is 2, one shower coating knife is a short shower coating knife 301, and the other shower coating knife is a long shower coating knife 302; the two curtain coating knives are fixed below the connecting plate 2 and are respectively arranged at two sides of the slit;
The tensioning assembly 4, the tensioning assembly 4 includes a plurality of tensioning blocks 401, and the plurality of tensioning blocks 401 are all arranged on the outer side of one of the shower knives, in this embodiment, on the outer side of the short shower knife 301. The tensioning assembly 4 is arranged on the outer side of the short curtain coating knife 301. And (3) tensioning the whole of the curtain coating knife, and controlling the drainage precision.
The number of the air knives 6 is two, and the two air knives 6 are respectively fixed on two sides of the connecting plate 2 through connecting arms 601901. The air knife 6 is used for blowing bubbles in the sprayed printing raw materials, so that the spray coating uniformity and flatness of the printing raw materials are further improved.
When the shower nozzle of the embodiment is used for printing, the movement, the direction speed of the movement and the like of the shower nozzle need to be controlled, and shower guide blocks 5 can be arranged on two sides of the connecting plate 2, so that the movement of the shower nozzle is controlled conveniently. And, the shower nozzle moves in the top of otter board, has still set up the mounting bracket 9 that is used for fixed shower nozzle, and cantilever 901 for fixed shower nozzle, and can install in the top of otter board in a sliding manner.
On the other hand, the embodiment also provides a printing method for 3D printing by using the shower nozzle, which comprises the following steps:
S1, connecting a curtain coating cavity with a material pump, and pumping printing raw materials for 3D printing into the curtain coating cavity by the material pump;
s2, adjusting the height of the screen plate, driving the curtain coating cavity to move on the screen plate from front to back once, and spraying out printing raw materials from the curtain coating cavity in the process of moving the curtain coating cavity to form a printing raw material layer with uniform thickness;
s3, the laser module emits laser with preset wavelength, and the raw material layer is sintered and printed according to a preset path to finish printing of one layer;
S4, repeating the steps until the printed matter is printed.
The thickness of the printing raw material layer of the curtain coating is adjusted by controlling the slit width of the curtain coating cavity.
In the process of step S2, the method further comprises the following steps: in the process of printing raw material curtain coating, foam in the printing raw material is removed by an air knife, and a printing raw material layer is paved.
While the invention has been described in terms of preferred embodiments, it is not intended to limit the scope of the invention. It is intended that all modifications within the scope of the invention, i.e., all equivalents thereof, be embraced by the invention as they come within their scope without departing from the invention.
Claims (4)
1. A shower nozzle for a 3D printing apparatus, the shower nozzle comprising: the spray coating cavity is of a cavity structure, a feed inlet for introducing the printing raw materials is arranged on the side face of the spray coating cavity, a slit for spraying the printing raw materials is formed at the bottom of the spray coating cavity, and a connecting plate for connecting the spray coating cavity is fixedly arranged at the bottom of the spray coating cavity around the slit; the number of the shower coating cutters is 2, one is a short shower coating cutter, and the other is a long shower coating cutter; the two curtain coating knives are fixed below the connecting plate and are respectively arranged at two sides of the slit; the tensioning assembly comprises a plurality of tensioning blocks, and the tensioning blocks are arranged on the outer side of one of the curtain coating knives; both ends of the slit are provided with drainage plates which are fixed on the connecting plate; the drainage plate is of a sheet-shaped structure, and the width of the drainage plate is larger than that of the slit; the length of the slit is adapted to the width of the screen plate on the 3D printing equipment; the width of the slit is adapted to the thickness of the layer printed in the 3D printing process; the drainage plate comprises three sections of bending parts, namely an outwards inclined part, an inwards inclined part and a vertical part from top to bottom; the outward inclined part enables printing raw materials at any position to be freely leached out, and the inward inclined part enables the printing raw materials at two ends to have certain buffering and avoid diffusion;
the shower coating cavity is of a plate-shaped structure, the front side surface of the shower coating cavity is provided with an inclined plate, and the rear side surface of the shower coating cavity is provided with a vertical plate;
an extension plate is arranged below the inclined plate, and the extension plate and the vertical plate stretch the slit to form a slit channel;
the tensioning assembly is arranged on the outer side of the short curtain coating knife;
The shower nozzle also comprises two air knives, wherein the two air knives are respectively fixed on two sides of the connecting plate through connecting arms.
2. A printing method for 3D printing using the shower head of claim 1, the printing method comprising the steps of:
S1, connecting a curtain coating cavity with a material pump, and pumping printing raw materials for 3D printing into the curtain coating cavity by the material pump;
S2, adjusting the height of the screen plate, driving the curtain coating cavity to move once from front to back on the screen plate, and spraying printing raw materials from the curtain coating cavity in the process of moving the curtain coating cavity, wherein the curtain coating cavity is of a cavity structure, a feeding hole for introducing the printing raw materials is formed in the side face of the curtain coating cavity, a slit for spraying the printing raw materials is formed in the bottom of the curtain coating cavity, drainage plates are arranged at two ends of the slit, after the printing raw materials flow out from a slit channel, a water curtain with uniform thickness is formed through drainage of the drainage plates, and the curtain coating cavity is uniformly coated on the screen plate to form a printing raw material layer with uniform thickness;
s3, the laser module emits laser with preset wavelength, and the raw material layer is sintered and printed according to a preset path to finish printing of one layer;
S4, repeating the steps until the printed matter is printed.
3. The printing method according to claim 2, wherein in the step S2, the thickness of the layer of the printing raw material for curtain coating is adjusted by controlling the slit width of the curtain coating chamber.
4. The printing method according to claim 2, wherein the step S2 is performed, further comprising the steps of: in the process of printing raw material curtain coating, foam in the printing raw material is removed by an air knife, and a printing raw material layer is paved.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019101296000 | 2019-02-21 | ||
| CN201910129600 | 2019-02-21 |
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| Publication Number | Publication Date |
|---|---|
| CN110497614A CN110497614A (en) | 2019-11-26 |
| CN110497614B true CN110497614B (en) | 2024-05-10 |
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| CN201910137024.4A Active CN110497614B (en) | 2019-02-21 | 2019-02-25 | Shower nozzle for 3D printing equipment and corresponding printing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113427760B (en) * | 2021-07-14 | 2022-10-25 | 内蒙古工业大学 | 3D prints shower nozzle and 3D printing device |
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| CN108454098A (en) * | 2018-02-02 | 2018-08-28 | 湖南华曙高科技有限责任公司 | Stereolithography equipment |
| CN208303144U (en) * | 2018-03-26 | 2019-01-01 | 韩锦永 | curtain coater |
| CN108357101A (en) * | 2018-04-08 | 2018-08-03 | 浙江大学 | A kind of environment-friendly type powder 3D printer |
| CN110497615A (en) * | 2019-02-21 | 2019-11-26 | 广州捷和电子科技有限公司 | A kind of showering formula 3D printing equipment |
| CN209971549U (en) * | 2019-02-21 | 2020-01-21 | 广州捷和电子科技有限公司 | A drench scribble shower nozzle for 3D printing apparatus |
| CN209971550U (en) * | 2019-02-21 | 2020-01-21 | 广州捷和电子科技有限公司 | Curtain coating type 3D printing equipment |
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| CN110497614A (en) | 2019-11-26 |
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