CN107989378B - 3D printer nozzle and 3D printing equipment - Google Patents
3D printer nozzle and 3D printing equipment Download PDFInfo
- Publication number
- CN107989378B CN107989378B CN201810061055.1A CN201810061055A CN107989378B CN 107989378 B CN107989378 B CN 107989378B CN 201810061055 A CN201810061055 A CN 201810061055A CN 107989378 B CN107989378 B CN 107989378B
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- China
- Prior art keywords
- decorative layer
- feeding pipeline
- plate
- forming
- partition plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0418—Devices for both conveying and distributing with distribution hose
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G2021/049—Devices for both conveying and distributing concrete mixing nozzles specially adapted for conveying devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to the technical field of 3D printing, in particular to a 3D printer nozzle and 3D printing equipment. The 3D printer nozzle includes: a nozzle body and a decorative layer module; the spray nozzle comprises a spray nozzle body, and is characterized in that a first feeding pipeline, a second feeding pipeline and a mixing cavity are arranged on the spray nozzle body, one ends of the first feeding pipeline and the second feeding pipeline are communicated with the mixing cavity, and a decorative layer module is arranged on one side, close to the first feeding pipeline, of the mixing cavity, so that a decorative layer and a main wall body of the wall body are integrally formed. The technical problems that in the prior art, the forming time of an outer wall decorative layer and a wall body is long, and the outer wall decorative layer is easy to fall off are solved.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a 3D printer nozzle and 3D printing equipment.
Background
With the development of science and technology and city, the building area is continuously increased. The assembled production has the advantages of high construction speed, low cost and the like, and has a certain share in the building market, and is also the development direction of future building construction.
At present, the building construction process refers to the process that firstly, a wall body is manufactured, then plastering and leveling are carried out on the outer surface, and 2 times are needed. After the cement is dried, the surface of the cement needs to be coated with an interfacial agent, so that the following coating is well combined with the outer surface of the cement. Then spraying waterproof paint. Nevertheless, over time, on the one hand, the effect of the interface agent is reduced and, on the other hand, the cement releases gas during the final hardening process, so that the phenomena of bulging and falling off of exterior wall coatings and exterior wall putty are often seen.
Therefore, how to solve the problems that the outer wall decoration layer and the wall body are formed completely for a long time and the outer wall decoration layer is easy to fall off is a urgent problem to be solved by the technicians in the field.
Disclosure of Invention
The invention aims to provide a 3D printer nozzle so as to solve the technical problems that an outer wall decorative layer and a wall body are formed completely for a long time and the outer wall decorative layer is easy to fall off in the prior art.
The invention provides a 3D printer nozzle, which comprises: a nozzle body and a decorative layer module;
the spray nozzle comprises a spray nozzle body, and is characterized in that a first feeding pipeline, a second feeding pipeline and a mixing cavity are arranged on the spray nozzle body, one ends of the first feeding pipeline and the second feeding pipeline are communicated with the mixing cavity, and a decorative layer module is arranged on one side, close to the first feeding pipeline, of the mixing cavity, so that a decorative layer and a main wall body of the wall body are integrally formed.
Further, the decorative layer module comprises a forming plate and a partition plate;
the forming plate is provided with a first through hole communicated with the first feeding pipeline, the forming plate is arranged on one side, close to the first feeding pipeline, of the mixing cavity, a forming surface is arranged on one side, far away from the first feeding pipeline, of the forming plate, and the partition plate is arranged on the forming surface and is formed with a forming cavity for forming the decorative layer with the forming surface.
Further, the forming plate and the partition plate are integrally formed.
Further, the partition plate is arranged at one end of the forming plate, which is close to the inner side of the mixing cavity, the extending direction of the partition plate is the same as that of the forming plate, and the length of the partition plate is smaller than that of the forming plate.
Further, two sides of the molding surface are arranged in an arc shape, so that two adjacent decorative layers are arranged in a staggered and overlapped mode.
Further, the partition plate is provided with a groove, the extending direction of the groove is the same as that of the partition plate, and the groove is used for enabling the decorative layer to be inlaid in the main wall body.
Further, the extending end of the partition plate can intersect with the extending direction of the first through hole, so that the partition plate can block part of the discharge of the first feeding pipeline.
Further, the thickness of the partition plate is 0.2-1.2 mm.
Further, the thickness of the decorative layer is 3-10 mm.
A 3D printing apparatus having the above 3D printer nozzle.
The invention provides a 3D printer nozzle, which comprises: a nozzle body and a decorative layer module; the spray nozzle comprises a spray nozzle body, and is characterized in that a first feeding pipeline, a second feeding pipeline and a mixing cavity are arranged on the spray nozzle body, one ends of the first feeding pipeline and the second feeding pipeline are communicated with the mixing cavity, and a decorative layer module is arranged on one side, close to the first feeding pipeline, of the mixing cavity, so that a decorative layer and a main wall body of the wall body are integrally formed. By adopting the scheme, the nozzle body is internally provided with the mixing cavity, and also is provided with the first feeding pipe and the second feeding pipe which are communicated with the mixing cavity, and the first feeding pipe and the second feeding pipe simultaneously convey the materials of the wall body side wall and the materials of the decorative layer into the mixing cavity.
The 3D printing equipment provided by the invention is provided with the 3D printer nozzle. The beneficial effects generated by the 3D printing equipment are the same as those generated by the 3D printer nozzle, and are not repeated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a 3D printer nozzle according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a 3D printer nozzle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a decoration layer module of a 3D printer nozzle according to an embodiment of the present invention;
fig. 4 is a side view of a 3D printer nozzle according to an embodiment of the present invention.
Icon: 100-nozzle body; 200-a decorative layer module; 300-main wall; 400-a decorative layer; 110-a first feed line; 120-a second feed line; 130-a mixing chamber; 210-forming a plate; 220-dividing plates; 211-a first through hole; 212-molding surface; 221-grooves.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
In the description of the present invention, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a 3D printer nozzle according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a 3D printer nozzle according to an embodiment of the present invention.
As shown in fig. 1 and 2, the present invention provides a 3D printer nozzle, including: a nozzle body 100 and a decorative layer module 200;
the nozzle body 100 is provided with a first feeding pipeline 110, a second feeding pipeline 120 and a mixing cavity 130, one ends of the first feeding pipeline 110 and the second feeding pipeline 120 are communicated with the mixing cavity 130, and the decoration layer 400 module 200 is arranged on one side of the mixing cavity 130, which is close to the first feeding pipeline 110, so that the decoration layer 400 and the main wall 300 of the wall body are integrally formed.
The decoration layer 400 and the main wall 300 of the wall body refer to a wall body formed by printing and stacking layers through 3D printing nozzles capable of moving along three directions of XYZ by feeding of a cement paste system.
The decoration layer 400 refers to a material layer printed on the surface of the outer wall of the main wall 300 while printing the outer wall, and can replace a series of construction steps of plastering and leveling and spraying paint implemented by the traditional outer wall protection.
The decoration layer 400 mainly uses cement base materials as main raw materials, and is matched with various additives, materials for producing appearance decoration effects and pigments, so that various texture effects and ideal natural colors can be produced, and the decoration layer has the function of external wall decoration.
The material of the decorative layer 400 can also be weather-resistant, the weather-resistant decorative layer 400 and the wall body are printed together, the whole construction time of the whole wall body is shortened by a plurality of times, and the labor and material consumption is reduced by a plurality of times.
In a particular printing process, 2 "ink" supply systems are required, one for pumping slurry to the main wall 300 for the second feed line 120 and one for printing pumped slurry to the decorative layer 400 for the first feed line 110.
The invention provides a 3D printer nozzle, which comprises: a nozzle body 100 and a decorative layer module 200; the nozzle body 100 is provided with a first feeding pipeline 110, a second feeding pipeline 120 and a mixing cavity 130, one ends of the first feeding pipeline 110 and the second feeding pipeline 120 are communicated with the mixing cavity 130, and the decorative layer module 200 is disposed on one side of the mixing cavity 130, which is close to the first feeding pipeline 110, so that the decorative layer 400 and the main wall 300 of the wall body are integrally formed. By adopting the above scheme, the nozzle body 100 is internally provided with the mixing cavity 130, and also comprises a first feeding pipe and a second feeding pipe which are communicated with the mixing cavity 130, and the first feeding pipe and the second feeding pipe simultaneously convey the materials of the wall body side wall and the materials of the decorative layer 400 into the mixing cavity 130, and the decorative layer 400 can be embedded in the wall body side wall due to the arrangement of the decorative layer module 200, so that the technical problems that the outer wall decorative layer 400 and the wall body in the prior art are long in complete time and the outer wall decorative layer 400 is easy to fall off are solved.
Fig. 3 is a schematic structural diagram of a decoration layer module of a 3D printer nozzle according to an embodiment of the present invention;
fig. 4 is a side view of a 3D printer nozzle according to an embodiment of the present invention.
As shown in fig. 3 and 4, further, the decoration layer module 200 includes a shaping plate 210 and a partition plate 220 on the basis of the above embodiment;
the forming plate 210 is provided with a first through hole 211 communicated with the first feeding pipeline 110, the forming plate 210 is arranged on one side of the mixing cavity 130 close to the first feeding pipeline 110, one side of the forming plate 210 away from the first feeding pipeline 110 is provided with a forming surface 212, and the partition plate 220 is arranged on the forming surface 212 and forms a fixed cavity with the forming surface 212 for fixing the decorative layer 400.
Among them, the shape of the first through hole 211 may be circular, rectangular, elliptical, etc., and is preferably circular.
In this embodiment, a first through hole 211 is disposed on the forming plate 210 and is communicated with the first feeding pipe 110, a forming surface 212 is disposed at one end of the forming plate 210 far away from the first feeding pipe, and a partition plate 220 is fixedly disposed on the forming surface 212, so that the partition plate 220 and the forming surface 212 can form a forming cavity of the decorative layer 400, and due to the arrangement of the partition plate 220, the mixing cavity 130 is divided into a forming cavity of the decorative layer 400 and a forming cavity of the side wall of the main wall 300, and the forming cavity of the decorative layer 400 and the forming cavity of the side wall of the main wall 300 are formed by the decorative layer 400 and the side wall of the main wall 300 respectively.
Further, on the basis of the above embodiment, the molding plate 210 and the partition plate 220 are integrally molded.
In this embodiment, the forming plate 210 and the partition plate 220 are integrally formed, and the partition plate 220 is impacted by the material in the first feeding pipeline 110 and extruded by the material flowing out of the second feeding pipeline 120 during specific operation, so that the partition plate 220 and the forming plate 210 are integrally arranged, and the stability of operation can be improved.
Further, on the basis of the above embodiment, the partition plate 220 is disposed at one end of the molding plate near the inside of the mixing chamber 130, the partition plate 220 is the same as the molding plate in the extending direction, and the partition plate 220 has a length smaller than that of the molding plate.
In this embodiment, the length of the partition plate 220 is smaller than that of the forming plate, so that the material of the decorative layer 400 and the material of the side wall of the main wall 300 can be well mixed in the moving process of the nozzle, so that the material on the side wall of the main wall 300 is completely covered by the material of the decorative layer 400, and the corrosion probability of the side wall of the main wall 300 is reduced.
Further, on the basis of the above embodiment, two sides of the molding surface 212 are arc-shaped, so that two adjacent decorative layers 400 are staggered and overlapped.
In this embodiment, the two sides of the molding surface 212 are arc-shaped, when the printed decoration layer 400 is printed, the upper and lower ends of the decoration layer 400 are arc-shaped, the upper and lower ends of the arc-shaped decoration layer 400 are abutted with the upper and lower ends of the adjacent decoration layer 400, and the side wall of the main wall 300 connects the two adjacent arc-shaped parts, so that the adjacent two decoration layers 400 are staggered and overlapped, thereby improving the strength of the whole wall and the safety of the building.
Further, on the basis of the above embodiment, the partition plate 220 is provided with a groove 221, the extending direction of the groove 221 is the same as the extending direction of the partition plate 220, and the groove 221 is used for embedding the decorative layer 400 in the main wall 300.
The number of the grooves 221 may be one, two, three or more.
In this embodiment, the grooves 221 with the same extending direction as the partition plate 220 are provided on the partition plate 220, so that when the decorative layer 400 and the side wall of the main wall 300 are formed, the decorative layer 400 is embedded in the side wall of the main wall 300, ensuring that the decorative layer 400 and the side wall of the main wall 300 have more reliable connection strength, and will not separate or fall off during printing.
Further, on the basis of the above embodiment, the extending end of the partition plate 220 may intersect with the extending direction of the first through hole 211, so that the partition plate 220 may block part of the discharge of the first feeding pipe 110.
In this embodiment, the partition plate 220 can block the discharge of the first feeding pipeline 110, so that the discharge of the first feeding pipeline can not directly impact the discharge of the second feeding pipeline 120, thereby ensuring that the material in the main wall 300 can not reach the surface of the decorative layer 400, and improving the quality of the printed wall.
Further, the thickness of the partition plate 220 is 0.2 to 1.2mm based on the above embodiment.
Further, the thickness of the decorative layer 400 is 3 to 10mm.
In this embodiment, the thickness of the partition plate 220 is 0.2-1.2 mm, and the thickness of the decorative layer 400 is 3-10 mm, so that the printing effect can be ensured, and the aesthetic property can be ensured.
Specifically, during printing, the two sets of pumping systems respectively perform quantitative pumping according to a mathematical model generated according to the feeding quantity required by the design section, and the whole calculation process is completely controlled by a computer on line.
The nozzle mounted at the lower end of the Z axis performs a prescribed printing operation in three directions of XYZ in accordance with a predetermined computer program. At the same time, the ink supply system adjusts the amount of feed pumped as required by the program.
The computer program is provided with fault diagnosis and interruption instructions, printing can be stopped at any time, on-line sampling and inspection can be performed, and then the nozzles can automatically return to the printing position before the last interruption through the recovered instructions.
A 3D printing apparatus having the above 3D printer nozzle.
The 3D printing equipment provided by the invention is provided with the 3D printer nozzle. The beneficial effects generated by the 3D printing equipment are the same as those generated by the 3D printer nozzle, and are not repeated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. A 3D printer nozzle, comprising: a nozzle body and a decorative layer module;
the nozzle body is provided with a first feeding pipeline, a second feeding pipeline and a mixing cavity, one ends of the first feeding pipeline and the second feeding pipeline are communicated with the mixing cavity, and the decorative layer module is arranged on one side of the mixing cavity, which is close to the first feeding pipeline, so that the decorative layer and the main wall body of the wall body are integrally formed; the decorative layer module comprises a forming plate and a partition plate;
the forming plate is provided with a first through hole communicated with the first feeding pipeline, the forming plate is arranged on one side of the mixing cavity close to the first feeding pipeline, one side of the forming plate, which is far away from the first feeding pipeline, is provided with a forming surface, and the partition plate is arranged on the forming surface and forms a forming cavity with the forming surface for forming the decorative layer;
the partition plate is provided with a groove, the extending direction of the groove is the same as that of the partition plate, and the groove is used for embedding the decorative layer in the main wall body;
the extending end of the partition plate can be intersected with the extending direction of the first through hole, so that the partition plate can block part of the discharging of the first feeding pipeline.
2. The 3D printer nozzle of claim 1, wherein the shaping plate and the separating plate are integrally formed.
3. The 3D printer nozzle of claim 2, wherein the separation plate is disposed at an end of the forming plate near the inside of the mixing chamber, the separation plate is in the same extension direction as the forming plate, and the separation plate is smaller than the forming plate in length.
4. A 3D printer nozzle as claimed in claim 3, wherein two sides of the moulding surface are arranged in an arc shape so that two adjacent decorative layers are arranged in a staggered and overlapping manner.
5. The 3D printer nozzle of claim 1, wherein the divider plate has a thickness of 0.2-1.2 mm.
6. The 3D printer nozzle of any of claims 1-5, wherein the decorative layer has a thickness of 3-10 mm.
7. A 3D printing device having a 3D printer nozzle as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810061055.1A CN107989378B (en) | 2018-01-22 | 2018-01-22 | 3D printer nozzle and 3D printing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810061055.1A CN107989378B (en) | 2018-01-22 | 2018-01-22 | 3D printer nozzle and 3D printing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107989378A CN107989378A (en) | 2018-05-04 |
| CN107989378B true CN107989378B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810061055.1A Active CN107989378B (en) | 2018-01-22 | 2018-01-22 | 3D printer nozzle and 3D printing equipment |
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| CN (1) | CN107989378B (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4512932B2 (en) * | 2000-12-26 | 2010-07-28 | クボタ松下電工外装株式会社 | Spray nozzle for painting outer wall materials |
| US7874825B2 (en) * | 2005-10-26 | 2011-01-25 | University Of Southern California | Nozzle for forming an extruded wall with rib-like interior |
| CN100351471C (en) * | 2003-01-21 | 2007-11-28 | 南加州大学 | Multi-nozzle assembly for extrusion of wall |
| US8801415B2 (en) * | 2005-01-21 | 2014-08-12 | University Of Southern California | Contour crafting extrusion nozzles |
| KR101136117B1 (en) * | 2011-05-23 | 2012-04-17 | (주)중원와이즈 | A decoration pannel printing method use inkjet printer and decoration pannel printed by method thereof |
| CN202826363U (en) * | 2012-10-16 | 2013-03-27 | 刘太恒 | 3PE (Poly Ethylene) pipeline anticorrosion and co-extrusion lamination extruding coating machine |
| EP4008521B1 (en) * | 2013-03-22 | 2024-01-03 | Markforged, Inc. | Three dimensional printing of reinforced filament |
| CN204738415U (en) * | 2015-06-19 | 2015-11-04 | 马义和 | Integration 3D prints building wall |
| CN105459399B (en) * | 2015-07-24 | 2018-04-24 | 广西科技大学 | A kind of double-deck printing head of 3D printer |
| JP6801173B2 (en) * | 2015-10-29 | 2020-12-16 | セイコーエプソン株式会社 | Manufacturing method of three-dimensional structure, its manufacturing equipment and its control program |
| US10074449B2 (en) * | 2016-06-21 | 2018-09-11 | Raytheon Company | Additively manufactured concrete-bearing radiation attenuation structure |
| CN106313466B (en) * | 2016-08-25 | 2019-08-09 | 佛山市南海森蓝环保科技有限公司 | A kind of preparation method of PVC composite plate |
| CN106515017A (en) * | 2016-11-30 | 2017-03-22 | 盈创新材料(苏州)有限公司 | 3D printing spray head |
| CN207974535U (en) * | 2018-01-22 | 2018-10-16 | 上海言诺建筑材料有限公司 | 3D printer nozzle and 3D printing equipment |
-
2018
- 2018-01-22 CN CN201810061055.1A patent/CN107989378B/en active Active
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| CN107989378A (en) | 2018-05-04 |
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