CN110227817B - A powder cleaning device for 3D printing technique - Google Patents
A powder cleaning device for 3D printing technique Download PDFInfo
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- CN110227817B CN110227817B CN201910617875.9A CN201910617875A CN110227817B CN 110227817 B CN110227817 B CN 110227817B CN 201910617875 A CN201910617875 A CN 201910617875A CN 110227817 B CN110227817 B CN 110227817B
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- 239000000843 powder Substances 0.000 title claims abstract description 55
- 238000004140 cleaning Methods 0.000 title claims abstract description 15
- 238000010146 3D printing Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title abstract description 8
- 238000007639 printing Methods 0.000 claims abstract description 93
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000007547 defect Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 21
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Screen Printers (AREA)
- Brushes (AREA)
Abstract
The invention provides a powder cleaning device for a 3D printing technology, which comprises a first support, a first connecting rod, a printing flat plate, a second connecting rod and a second support, wherein one end of the first connecting rod is hinged with the first support, one side of the printing flat plate is connected with the other end of the first connecting rod and is used for supporting powder, one end of the second connecting rod is connected with the other side of the printing flat plate, the second support is movably connected with the other end of the second connecting rod, the first support is also provided with a driving assembly for driving the first connecting rod to rotate, and the second support is provided with a limiting assembly for fixing the second connecting rod; still include the collection subassembly that is used for clearance and collects the powder, collect subassembly and print dull and stereotyped swing joint. The powder cleaning device for the 3D printing technology provided by the invention has the advantages that the powder is time-saving and labor-saving in the cleaning process, the defect of powder diffusion is avoided, and the powder can still be collected under the condition of high temperature.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a powder cleaning device for a 3D printing technology.
Background
3D printing is one of the rapid prototyping technologies, which is a technology for constructing an object by using an adhesive material such as powdered metal or plastic and the like in a layer-by-layer printing manner on the basis of a digital model file.
3D printing is typically achieved using digital technology material printers. The method is often used for manufacturing models in the fields of mold manufacturing, industrial design and the like, and is gradually used for directly manufacturing some products, and parts printed by the technology are already available. The technology has applications in jewelry, footwear, industrial design, construction, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.
The 3D printing can adopt metal powder, and after printing, need collect remaining powder, however, because the characteristic that the temperature is higher and the powder easily diffuses, in the collection process, waste time and energy, and people inhale the powder in the lung easily, may influence healthy. Therefore, it is necessary to solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide a powder cleaning device for a 3D printing technology, which solves the problems that time and labor are wasted and powder is easy to diffuse in a powder cleaning process, so that the powder can still be collected under the condition of high temperature.
A powder cleaning device for a 3D printing technology is characterized by comprising a first support, a first connecting rod, a printing flat plate, a second connecting rod and a second support, wherein one end of the first connecting rod is hinged to the first support, one side of the printing flat plate is connected with the other end of the first connecting rod and used for supporting powder, one end of the second connecting rod is connected with the other side of the printing flat plate, the second support is movably connected with the other end of the second connecting rod, a driving assembly used for driving the first connecting rod to rotate is further arranged on the first support, and a limiting assembly used for fixing the second connecting rod is arranged on the second support;
still include the collection subassembly that is used for clearance and collects the powder, collect the subassembly with print dull and stereotyped swing joint.
When using, lay metal powder on printing the flat board, after printing and finishing, can remain a large amount of metal powder on printing the flat board, at this moment, the spacing subassembly of relaxation rotates first connecting rod and prints the flat board, with first connecting rod and print the flat board and rotate certain angle, will collect the subassembly cover afterwards print on the flat board, be provided with the brush on the collection subassembly, when will collect the subassembly and break away from when printing the flat board, metal powder is cleared up down by the brush.
First support includes U type seat and vertical setting and is in extension board of U type seat upper end, the opening orientation of U type board print the flat board, first connecting rod and vertical passing the pivot of U type board is articulated to be connected, the pivot top is in with the setting drive assembly on the extension board is connected.
When the first link and the printing plate are set at the printing position, the printing plate is positioned by the driving component.
The driving assembly comprises a driving shaft vertically penetrating through a fixed seat, a gear arranged at the bottom end of the driving shaft and a rotating handle arranged at the top end of the driving shaft, the fixed seat is arranged on the extension plate, the gear is movably arranged in a first blind hole formed in the top end face of the rotating shaft, and the shape and the size of the first blind hole are consistent with those of the gear.
After printing, because the metal powder temperature is higher, so when manual drive prints dull and stereotyped and first connecting rod rotation, can injure skin, the gear setting is in first blind hole this moment, and rotatory turning handle, and then drive first connecting rod and print dull and stereotyped rotation, can surperficial staff be burnt like this.
The limiting assembly comprises a fixing plate horizontally arranged on the second support, a positioning screw vertically penetrating through the fixing plate and a rotating block arranged at the bottom end of the screw;
the positioning screw rod is movably arranged in a second blind hole formed in the bottom of the second connecting rod.
The end face, close to the printing flat plate, of the first connecting rod is provided with a hinged shaft a, the hinged shaft a is hinged to one side face of the printing flat plate, and the first connecting rod is further provided with a limiting plate a for fixing the printing flat plate;
the second connecting rod is close to the end face of the printing flat plate is provided with an articulated shaft b, the articulated shaft b is connected with the other side face of the printing flat plate in an articulated mode, and a limiting plate b for fixing the printing flat plate is further arranged on the second connecting rod.
The hinge shaft a and the hinge shaft b are provided so that the printing plate can be freely rotated.
The limiting plate a is U-shaped, embedded blocks are arranged on two sides inside the limiting plate a, the two embedded blocks are respectively arranged in open grooves formed in two sides of the first connecting rod, an embedded plate is arranged at the top end of the limiting plate a, and the embedded plate is movably arranged in a third blind hole formed in the end face of the printing flat plate;
the structure of the limiting plate b is consistent with that of the limiting plate a, a fourth blind hole is formed in the other end face of the printing flat plate, and the limiting plate b is movably connected with the fourth blind hole.
The embedded block is provided so that the limiting plate a can slide along the first link and the limiting plate b can slide along the second link.
An L-shaped plate is arranged on one side of the printing flat plate, the L-shaped plate comprises an attaching part and a supporting part vertically connected with the attaching part, the attaching part is in contact connection with the side surface of the printing flat plate, the supporting part is arranged at the bottom of the printing flat plate, and a gap is formed between the supporting part and the bottom surface of the printing flat plate;
the L-shaped plate is movably connected with the collecting assembly.
When collecting the metal powder, an L-shaped plate is provided, helping to support the collection assembly.
The collecting assembly comprises a collecting box and a brush arranged at the opening of the collecting box, one side of the collecting box is provided with an opening, the printing flat plate is movably arranged in the collecting box, the top end of the brush is provided with a magnet strip, and the magnet strip is connected with the collecting box;
the collecting box bottom is arranged on the supporting portion, the collecting box top is arranged at the upper end portion of the printing flat plate, and the hairbrush is arranged at the upper end portion of the printing flat plate.
Print dull and stereotyped setting in collecting the box, rotate and print the dull and stereotyped, under the action of gravity, metal powder slides in collecting the box, helps avoiding floating of metal powder.
The invention achieves the following remarkable effects:
(1) the first support and the first connecting rod are arranged, when powder needs to be cleaned, the first connecting rod and the printing flat plate can be rotated to a proper position, so that the operation of people is facilitated, and the defect that the printing flat plate is fixedly arranged and cannot move in the past is overcome;
(2) the printing flat plate can rotate, so that when powder is cleaned, the printing flat plate needs to rotate, the powder enters the collecting box under the action of gravity, and meanwhile, due to the action of the brush, less powder is diffused into the air, and the pollution to the air is reduced;
(3) the magnet strip is arranged at the top end of the brush, so that the distance between the brush and the powder and the distance between the brush and the upper end face of the collecting box can be adjusted.
Drawings
FIG. 1 is a schematic structural view of a powder cleaning apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the first support in the embodiment of the present invention.
Fig. 3 is a schematic structural view of a second support and a second link in the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a printing plate in the embodiment of the invention.
FIG. 5 is a schematic view of the structure of the collecting box in the embodiment of the present invention.
Fig. 6 is a schematic structural diagram of the first link and the rotating shaft in the embodiment of the present invention.
Wherein the reference numerals are: 1. a first support; 1-1, an extension plate; 2. a first link; 2-1, a limiting plate a; 3. a collection box; 3-1, brushing; 4. a limiting plate b; 5. a second link; 6. a second support; 6-1, rotating blocks; 6-2, fixing plates; 7. printing a flat plate; 7-1, L-shaped plate; 7-2, a rotating shaft hole; 8. a gear; 8-1, a rotating shaft; 9. a drive shaft; 10. and (7) rotating a handle.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is described below by way of specific embodiments.
Referring to fig. 1, a powder cleaning device for a 3D printing technology is characterized by comprising a first support 1, a first connecting rod 2 with one end hinged to the first support 1, a printing plate 7 with one side connected to the other end of the first connecting rod 2 and used for supporting powder, a second connecting rod 5 with one end connected to the other side of the printing plate 7, and a second support 6 movably connected to the other end of the second connecting rod 5, wherein the first support 1 is further provided with a driving component for driving the first connecting rod 2 to rotate, and the second support 6 is provided with a limiting component for fixing the second connecting rod 5;
the powder collecting device further comprises a collecting component used for cleaning and collecting powder, and the collecting component is movably connected with the printing flat plate 7.
When using, lay metal powder on printing dull and stereotyped 7, after printing and finishing, can remain a large amount of metal powder on the printing dull and stereotyped 7, at this moment, the spacing subassembly of relaxation rotates first connecting rod 2 and prints dull and stereotyped 7, rotates first connecting rod 2 and printing dull and stereotyped 7 to certain angle, will collect the subassembly cover afterwards on printing dull and stereotyped 7, is provided with brush 3-1 on the collection subassembly, when breaking away from printing dull and stereotyped 7 with the collection subassembly, metal powder is cleared up by brush 3-1.
Referring to fig. 2, the first support 1 comprises a U-shaped base and an extension plate 1-1 vertically arranged at the upper end of the U-shaped base, the opening of the U-shaped base faces a printing plate 7, the first connecting rod 2 is hinged with a rotating shaft 8-1 vertically penetrating through the U-shaped base, and the top end of the rotating shaft 8-1 is connected with a driving assembly arranged on the extension plate 1-1.
When the first link 2 and the print plate 7 are set in the print position, the print plate 7 is positioned by the drive assembly.
The driving assembly comprises a driving shaft 9 vertically penetrating through a fixed seat, a gear 8 arranged at the bottom end of the driving shaft 9 and a rotating handle 10 arranged at the top end of the driving shaft 9, the fixed seat is arranged on the extension plate 1-1, the gear 8 is movably arranged in a first blind hole arranged on the top end face of the rotating shaft 8-1, and the shape and the size of the first blind hole are consistent with those of the gear 8.
After printing, because the metal powder temperature is higher, so when manual drive prints dull and stereotyped 7 and first connecting rod 2 rotation, probably hurt skin, gear 8 sets up in first blind hole this moment, and rotatory turning handle 10, and then drive first connecting rod 2 and print dull and stereotyped 7 rotation, can so that the surperficial staff is burnt.
Referring to fig. 3, the limiting assembly comprises a fixing plate 6-2 horizontally arranged on the second support 6, a positioning screw vertically penetrating through the fixing plate 6-2, and a rotating block 6-1 arranged at the bottom end of the screw;
the positioning screw rod is movably arranged in a second blind hole formed in the bottom of the second connecting rod 5.
Referring to fig. 6, the end surface of the first connecting rod 2 close to the printing plate 7 is provided with a hinge shaft a, the hinge shaft a is arranged in a rotating shaft hole 7-2 arranged on one side surface of the printing plate 7, and the first connecting rod 2 is further provided with a limiting plate a2-1 for fixing the printing plate 7;
the end face of the second connecting rod 5 close to the printing flat plate 7 is provided with a hinge shaft b, the hinge shaft b is arranged in a rotating shaft hole 7-2 arranged on the other side face of the printing flat plate 7, and the second connecting rod 5 is also provided with a limiting plate b4 for fixing the printing flat plate 7.
The hinge shaft a and the hinge shaft b are provided so that the printing plate 7 can freely rotate.
The limiting plate a2-1 is U-shaped, two sides of the inside of the limiting plate a2-1 are provided with embedded blocks, the two embedded blocks are respectively arranged in open grooves formed in two sides of the first connecting rod 2, the top end of the limiting plate a2-1 is provided with an embedded plate, and the embedded plate is movably arranged in a third blind hole formed in the end face of the printing flat plate 7;
the structure of the limit plate b4 is the same as that of the limit plate a2-1, the other end face of the printing flat plate 7 is provided with a fourth blind hole, and the limit plate b4 is movably connected with the fourth blind hole.
The insertion block is provided so that the stopper plate a2-1 can slide along the first link 2 and the stopper plate b4 can slide along the second link 5.
Referring to fig. 4, an L-shaped plate 7-1 is arranged on one side of the printing plate 7, the L-shaped plate 7-1 includes an attaching portion and a supporting portion vertically connected to the attaching portion, the attaching portion is in contact connection with the side surface of the printing plate 7, the supporting portion is arranged at the bottom of the printing plate 7, and a gap is formed between the supporting portion and the bottom surface of the printing plate 7;
the L-shaped plate 7-1 is movably connected with the collecting component.
When collecting the metal powder, an L-shaped plate 7-1 is provided to help support the collection assembly.
Referring to fig. 5, the collecting assembly comprises a collecting box 3 and a brush 3-1 arranged at the opening of the collecting box 3, one side of the collecting box 3 is opened, a printing flat plate 7 is movably arranged in the collecting box 3, and a magnet strip is arranged at the top end of the brush 3-1 and connected with the collecting box 3;
the bottom of the collecting box 3 is arranged on the supporting part, the top of the collecting box 3 is arranged at the upper end part of the printing flat plate 7, and the hairbrush 3-1 is arranged at the upper end part of the printing flat plate 7.
Print dull and stereotyped 7 setting in collecting box 3, rotate and print dull and stereotyped 7, under the action of gravity, metal powder slides in collecting box 3, helps avoiding the wafing of metal powder.
The working process of the invention is as follows:
when the collecting device is used, metal powder is laid on the printing flat plate 7, a large amount of metal powder can be remained on the printing flat plate 7 after printing is finished, at the moment, the first connecting rod 2 and the printing flat plate 7 are rotated by the relaxation limiting component, the first connecting rod 2 and the printing flat plate 7 are rotated to a certain angle, then the collecting component is sleeved on the printing flat plate 7, a brush 3-1 is arranged on the collecting component, and when the collecting component is separated from the printing flat plate 7, the metal powder is cleaned by the brush 3-1;
because the brush and the collecting box are movably connected, when the metal powder is collected, the distance between the brush and the printing flat plate can be adjusted, all the metal powder is favorably swept down, and in addition, the cleaning process of the powder needs to be slowly carried out in order to avoid the diffusion of the metal powder into the air.
The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (1)
1. A powder cleaning device for a 3D printing technology is characterized by comprising a first support, a first connecting rod, a printing flat plate, a second connecting rod and a second support, wherein one end of the first connecting rod is hinged to the first support, one side of the printing flat plate is connected with the other end of the first connecting rod and used for supporting powder, one end of the second connecting rod is connected with the other side of the printing flat plate, the second support is movably connected with the other end of the second connecting rod, a driving assembly used for driving the first connecting rod to rotate is further arranged on the first support, and a limiting assembly used for fixing the second connecting rod is arranged on the second support;
the collecting component is used for cleaning and collecting powder and is movably connected with the printing flat plate;
the first support comprises a U-shaped seat and an extension plate vertically arranged at the upper end of the U-shaped seat, the opening of the U-shaped plate faces the printing flat plate, the first connecting rod is hinged with a rotating shaft vertically penetrating through the U-shaped plate, and the top end of the rotating shaft is connected with a driving assembly arranged on the extension plate;
the driving assembly comprises a driving shaft vertically penetrating through a fixed seat, a gear arranged at the bottom end of the driving shaft and a rotating handle arranged at the top end of the driving shaft, the fixed seat is arranged on the extension plate, the gear is movably arranged in a first blind hole arranged on the top end face of the rotating shaft, and the shape and the size of the first blind hole are consistent with those of the gear;
the limiting assembly comprises a fixing plate horizontally arranged on the second support, a positioning screw vertically penetrating through the fixing plate and a rotating block arranged at the bottom end of the screw;
the positioning screw rod is movably arranged in a second blind hole formed in the bottom of the second connecting rod;
the end face, close to the printing flat plate, of the first connecting rod is provided with a hinged shaft a, the hinged shaft a is hinged to one side face of the printing flat plate, and the first connecting rod is further provided with a limiting plate a for fixing the printing flat plate;
an articulated shaft b is arranged on the end face, close to the printing flat plate, of the second connecting rod, the articulated shaft b is articulated with the other side face of the printing flat plate, and a limiting plate b for fixing the printing flat plate is further arranged on the second connecting rod;
the limiting plate a is U-shaped, embedded blocks are arranged on two sides inside the limiting plate a, the two embedded blocks are respectively arranged in open grooves formed in two sides of the first connecting rod, an embedded plate is arranged at the top end of the limiting plate a, and the embedded plate is movably arranged in a third blind hole formed in the end face of the printing flat plate;
the structure of the limiting plate b is consistent with that of the limiting plate a, a fourth blind hole is formed in the other end face of the printing flat plate, and the limiting plate b is movably connected with the fourth blind hole;
an L-shaped plate is arranged on one side of the printing flat plate, the L-shaped plate comprises an attaching part and a supporting part vertically connected with the attaching part, the attaching part is in contact connection with the side surface of the printing flat plate, the supporting part is arranged at the bottom of the printing flat plate, and a gap is formed between the supporting part and the bottom surface of the printing flat plate; the L-shaped plate is movably connected with the collecting assembly;
the collecting assembly comprises a collecting box and a brush arranged at the opening of the collecting box, one side of the collecting box is provided with an opening, the printing flat plate is movably arranged in the collecting box, the top end of the brush is provided with a magnet strip, and the magnet strip is connected with the collecting box;
the collecting box bottom is arranged on the supporting portion, the collecting box top is arranged at the upper end portion of the printing flat plate, and the hairbrush is arranged at the upper end portion of the printing flat plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617875.9A CN110227817B (en) | 2019-07-10 | 2019-07-10 | A powder cleaning device for 3D printing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617875.9A CN110227817B (en) | 2019-07-10 | 2019-07-10 | A powder cleaning device for 3D printing technique |
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| Publication Number | Publication Date |
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| CN110227817A CN110227817A (en) | 2019-09-13 |
| CN110227817B true CN110227817B (en) | 2021-05-04 |
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| CN201910617875.9A Active CN110227817B (en) | 2019-07-10 | 2019-07-10 | A powder cleaning device for 3D printing technique |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940351A (en) * | 2020-09-01 | 2020-11-17 | 晋中学院 | 3D printing apparatus metal powder cleaning device |
| CN112496346A (en) * | 2020-11-18 | 2021-03-16 | 江西鑫润材料科技有限公司 | Metal vibration material disk makes with device to alloy powder recovery |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2401180C2 (en) * | 2008-08-15 | 2010-10-10 | Государственное Научное Учреждение "Институт Физики Имени Б.И. Степанова Национальной Академии Наук Беларуси" | Method of producing gradient materials from powders and device to this end |
| RU2526909C1 (en) * | 2013-01-09 | 2014-08-27 | Рустем Халимович Ганцев | Production of metallic article from powder material by layer-by-layer laser synthesis |
| CN205816336U (en) * | 2016-06-01 | 2016-12-21 | 西安铂力特激光成形技术有限公司 | A kind of 3D prints part powder cleaning equipment |
| CN107498055B (en) * | 2017-10-23 | 2019-12-13 | 鑫精合激光科技发展（北京）有限公司 | powder cleaning equipment for selective laser melting parts |
| CN207746416U (en) * | 2017-11-13 | 2018-08-21 | 黎硕三维科技发展（上海）有限公司 | A kind of powder collection device of 3D printer powder recovering mechanism |
| CN109648855B (en) * | 2019-01-09 | 2021-01-26 | 贵州工程应用技术学院 | Can clear up formula 3D printing device automatically |
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Effective date of registration: 20240717 Address after: 230000 Woye Garden Commercial Building B-1017, 81 Ganquan Road, Shushan District, Hefei City, Anhui Province Patentee after: HEFEI JINGLONG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 23000 Jingshi East Road, Jinan City, Shandong Province Patentee before: SHANDONG POLYTECHNIC Country or region before: China |
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