CN103990800A - Pressure relief type paraxial powder feeding spray nozzle device for laser 3D printer - Google Patents
Pressure relief type paraxial powder feeding spray nozzle device for laser 3D printer Download PDFInfo
- Publication number
- CN103990800A CN103990800A CN201410235079.6A CN201410235079A CN103990800A CN 103990800 A CN103990800 A CN 103990800A CN 201410235079 A CN201410235079 A CN 201410235079A CN 103990800 A CN103990800 A CN 103990800A
- Authority
- CN
- China
- Prior art keywords
- powder
- section
- pressure release
- cylinder cavity
- conical surface
- Prior art date
- 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.)
- Granted
Links
- 239000000843 powder Substances 0.000 title claims abstract description 123
- 239000007921 spray Substances 0.000 title abstract description 9
- 239000000463 material Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 239000003870 refractory metal Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 6
- 208000037259 Amyloid Plaque Diseases 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004372 laser cladding Methods 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Abstract
The invention relates to a pressure relief type paraxial powder feeding spray nozzle device for a laser 3D printer. The pressure relief type paraxial powder feeding spray nozzle device comprises a powder tube cavity and a spray nozzle, wherein the powder tube cavity and the spray nozzle are connected together. An end cover is arranged on the top of the powder tube cavity, and a powder feeding connecting pipe is inserted in the axis of the end cover. The pressure relief type paraxial powder feeding spray nozzle device is characterized in that the powder tube cavity comprises a straight tube section, a first conical surface section and a second conical surface section, wherein the straight tube section, the first conical surface section and the second conical surface section are sequentially connected from top to bottom; the spray nozzle is of a funnel type cone structure and comprises a funnel section and a powder spraying hole section communicated with the funnel section, a pressure relief pipe is arranged on the end cover, the powder feeding connecting pipe is inserted into the straight tube section of the powder tube cavity, and a plurality of pressure relief baffles are horizontally fixed to the powder feeding connecting pipe. The pressure relief type paraxial powder feeding spray nozzle device has the advantages that divergence of powder beams is reduced, straightness of the powder beams is improved, the overlap ratio of powder spots and light spots is increased, and the dimensional accuracy and the surface quality of printed workpieces are greatly improved.
Description
Technical field
The present invention relates to laser printing and laser melting and coating technique field, relate in particular to a kind of pressure release type paraxonic powder-feeding nozzle device for laser 3D printer.
Background technology
Laser melting coating is emerging in recent years a kind of material surface recovery technique, be the effective means of improving material surface performance, and powder-feeding nozzle is the critical component that affects Laser Cladding Quality.At present, laser melting and coating technique is widely application in laser 3D printing also, in order to improve laser 3D printing shaping part dimensional accuracy and surface quality, gives full play to laser 3D and prints advantage, and Recent study personnel propose to improve the new approaches that powder feeding powder converges.Dust feeder form has coaxial and paraxonic powder feeding etc., according to domestic and international existing research, for paraxonic automatic powder feeding system and apparatus structure, it adopts without the one-level of decompression function and converges powder feeding or have pressure release but the powder feeding structure of only having one-level to converge, when powder is from the ejection of this type of powder feeding structure, there is the large and low problem of powder stream linearity of powder divergence, cause amyloid plaque and laser facula registration low and be subject to powder to converge the impact of degree, powder using efficiency is relatively low, has increased production cost.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of pressure release type paraxonic powder-feeding nozzle device for laser 3D printer simple in structure is provided.It can improve registration and the powder using efficiency of amyloid plaque and laser facula.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of pressure release type paraxonic powder-feeding nozzle device for laser 3D printer, comprise the powder cylinder cavity and the nozzle that connect as one, the top of described powder cylinder cavity is provided with end cap, described end-cover axle is fitted with in the heart powder feeding and takes over, it is characterized in that, described powder cylinder cavity comprises the direct tube section connecting successively from top to bottom, the first conical surface section and the second conical surface section, described nozzle is funneling conical structure, the powder injection hole section that described nozzle comprises funnel section and is communicated with described funnel section, on described end cap, be also provided with relief tube, described powder feeding is taken over and is inserted in described powder cylinder cavity direct tube section, on described powder feeding is taken over, level is fixed with multiple tracks pressure release baffle plate.
The invention has the beneficial effects as follows, powder cylinder cavity and nozzle utilize respectively the storage effect of taper seat to make powder obtain secondary and converge, utilize pressure release baffle plate and relief tube to make the air pressure in powder reduce the loss of carrying out pressure release and reducing powder as far as possible, and then reduce the linearity of dispersing and increase powder stream of powder stream, improve the registration of amyloid plaque and hot spot, reduce and print surface of the work because of sticky powder or disperse because of powder the powder causing and waste, thereby reach the object that improves powder using efficiency and print workpiece dimensional accuracy and surface quality.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the axle center angle of the first conical surface section of described powder cylinder cavity and the inner conical surface of the second conical surface section and described powder cylinder cavity is respectively 20～60 ° and 5～10 °, and the axle center angle of the funnel section inner conical surface of described nozzle and described powder cylinder cavity is 15～45 °.
Adopt the beneficial effect of above-mentioned further scheme to be, rotate suitable inner conical surface tapering, can make powder reach good convergence effect, kept the motion morphology of powder stream simultaneously by the powder injection hole section of described funnel.
Further, described powder cylinder cavity and nozzle material therefor are refractory metal or high temperature ceramic material.
Adopt the beneficial effect of above-mentioned further scheme to be, can be more sturdy and durable.
Further, described pressure release baffle plate lacks structure for circle, and the circle of pressure release baffle plate lacks limit interlaced arrangement on described powder feeding is taken over described in multiple tracks.
Adopt the beneficial effect of above-mentioned further scheme to be, described pressure release baffle plate and powder cylinder cavity have formed deflector type pressure release passage.
Further, described relief tube and pressure release baffle plate adopt copper material material.
Adopt the beneficial effect of above-mentioned further scheme to be, utilize the plasticity of copper material good, corrosion resistant feature.
Further, described powder feeding is taken over and is fixed on described end cap by flange, and described relief tube is welded on described end cap, and described powder cylinder cavity is connected with described nozzle threads.
Adopt the beneficial effect of above-mentioned further scheme to be, utilize flange and be threaded, convenient disassembly.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of powder cylinder cavity of the present invention;
Fig. 3 is the structural representation of nozzle of the present invention;
Fig. 4 is pressure release baffle arrangement schematic diagram of the present invention;
Fig. 5 is use state diagram of the present invention.
At Fig. 1 in Fig. 4,1, powder cylinder cavity; 1-1, direct tube section; 1-2, the first conical surface section; 1-3, the second conical surface section, 2, nozzle; 2-1, funnel section; 2-2, powder injection hole section; 3, powder feeding is taken over; 4, relief tube; 5, pressure release baffle plate; 5-1, circle lack limit; 6, end cap; 7, powder stream; 8, light beam; 9, hot spot; 10, workpiece.
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
If Fig. 1 is to as shown in Fig. 4, a kind of pressure release type paraxonic powder-feeding nozzle device for laser 3D printer, comprise the powder cylinder cavity 1 and the nozzle 2 that connect as one, the top of described powder cylinder cavity is provided with end cap 6, described end-cover axle is fitted with in the heart powder feeding and takes over 3, described powder cylinder cavity 1 comprises the direct tube section 1-1 connecting successively from top to bottom, the first conical surface section 1-2 and the second conical surface section 1-3, described nozzle 2 is funneling conical structure, the powder injection hole section 2-2 that described nozzle 2 comprises funnel section 2-1 and is communicated with described funnel section 2-1, on described end cap 6, be also provided with relief tube 4, described powder feeding is taken over 3 and is inserted in described powder cylinder cavity 1 direct tube section 1-1, be fixed with multiple tracks pressure release baffle plate 5 in the described powder feeding level on 3 of taking over.
The axle center angle of the first conical surface section 1-2 of described powder cylinder cavity and the inner conical surface of the second conical surface section 1-3 and described powder cylinder cavity is respectively 20～60 ° and 5～10 °, and the axle center angle of the funnel section 2-1 inner conical surface of described nozzle and described powder cylinder cavity is 15～45 °.
Concrete, the axle center angle of the first conical surface section 1-2 of described powder cylinder cavity and the inner conical surface of the second conical surface section 1-3 and described powder cylinder cavity is respectively 40 ° and 8 °, and the axle center angle of the funnel section 2-1 inner conical surface of described nozzle and described powder cylinder cavity is 30 °.
With regard to each section of size, can adopt following size range: direct tube section 1-1, first conical surface section 1-2 of described powder cylinder cavity 1 and the length range of the second conical surface section 1-3 are followed successively by: 50～70 millimeters (20～35 millimeters of internal diameters), 15～30 millimeters, 40～50 millimeters; The length range of the funnel section 2-1 of described nozzle 2 and powder injection hole section 2-2 is respectively: 25～40 millimeters and 20～35 millimeters, the internal diameter of powder injection hole section 2-2 is 1.5～3 millimeters.
Described powder cylinder cavity 1 and nozzle 2 material therefors are refractory metal or high temperature ceramic material.
Described pressure release baffle plate 5 lacks structure for circle, and the circle of pressure release baffle plate lacks limit 5-1 and takes over interlaced arrangement on 3 in described powder feeding described in multiple tracks.
Described relief tube 4 and pressure release baffle plate 5 adopt copper material material.
Described powder feeding is taken over 3 and is fixed on described end cap 6 by flange, and described relief tube 4 is welded on described end cap 6, and described powder cylinder cavity 1 is threaded with described nozzle 2.
Operation principle of the present invention is: powder is taken over 3 by powder feeding and entered powder cylinder cavity 1, powder stream enters the funnel section 2-1 of nozzle through powder cylinder cavity 1 after one-level converges, funnel section 2-1 converges for the second time to powder stream, and keep and restrain the motion morphology after powder stream converges for the second time by the powder injection hole section 2-2 of nozzle, realize the secondary of powder stream is converged.Powder enters after powder cylinder cavity 1, and the deflector type pressure release passage that a part of air-flow forms through pressure release baffle plate 5 and powder cylinder cavity 1 carries out pressure release by relief tube 4, has avoided appearing at the loss because of powder in pressure leak process and do not reach the situation of the powder mass flow of setting.Powder converges and pressure release effect by secondary, thereby reduce the linearity of dispersing and increase powder stream of powder stream, improve the registration of amyloid plaque and laser facula, reduce and print the sticky powder of surface of the work or disperse because of powder the powder causing and waste, thereby improved powder using efficiency and printed workpiece dimensional accuracy and surface quality.
As shown in Figure 5, be use state diagram of the present invention.Laser beam 8 is radiated on the surface of workpiece 10 and forms hot spot 9, and powder is pooled powder stream 7 by the present invention, just in time sprays in described hot spot, has reached amyloid plaque and has overlapped with the better of hot spot.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. the pressure release type paraxonic powder-feeding nozzle device for laser 3D printer, comprise the powder cylinder cavity and the nozzle that connect as one, the top of described powder cylinder cavity is provided with end cap, described end-cover axle is fitted with in the heart powder feeding and takes over, it is characterized in that, described powder cylinder cavity comprises the direct tube section connecting successively from top to bottom, the first conical surface section and the second conical surface section, described nozzle is funneling conical structure, the powder injection hole section that described nozzle comprises funnel section and is communicated with described funnel section, on described end cap, be also provided with relief tube, described powder feeding is taken over and is inserted in described powder cylinder cavity direct tube section, on described powder feeding is taken over, level is fixed with multiple tracks pressure release baffle plate.
2. the pressure release type paraxonic powder-feeding nozzle device for laser 3D printer according to claim 1, it is characterized in that, the axle center angle of the first conical surface section of described powder cylinder cavity and the inner conical surface of the second conical surface section and described powder cylinder cavity is respectively 20～60 ° and 5～10 °, and the axle center angle of the funnel section inner conical surface of described nozzle and described powder cylinder cavity is 15～45 °.
3. the pressure release type paraxonic powder-feeding nozzle device for laser 3D printer according to claim 1 and 2, is characterized in that, described powder cylinder cavity and nozzle material therefor are refractory metal or high temperature ceramic material.
4. it is characterized in that according to the pressure release type paraxonic powder-feeding nozzle device for laser 3D printer described in claim 1 or 2 or 3, described pressure release baffle plate lacks structure for circle, and the circle of pressure release baffle plate lacks limit interlaced arrangement on described powder feeding is taken over described in multiple tracks.
5. the pressure release type paraxonic powder-feeding nozzle device for laser 3D printer according to claim 1, is characterized in that, described relief tube and pressure release baffle plate adopt copper material material.
6. the pressure release type paraxonic powder-feeding nozzle device for laser 3D printer according to claim 1, it is characterized in that, described powder feeding is taken over and is fixed on described end cap by flange, and described relief tube is welded on described end cap, and described powder cylinder cavity is connected with described nozzle threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235079.6A CN103990800B (en) | 2014-05-29 | 2014-05-29 | A kind of pressure release type paraxonic powder-feeding nozzle device for laser 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235079.6A CN103990800B (en) | 2014-05-29 | 2014-05-29 | A kind of pressure release type paraxonic powder-feeding nozzle device for laser 3D printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103990800A true CN103990800A (en) | 2014-08-20 |
| CN103990800B CN103990800B (en) | 2016-07-13 |
Family
ID=51305274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410235079.6A Active CN103990800B (en) | 2014-05-29 | 2014-05-29 | A kind of pressure release type paraxonic powder-feeding nozzle device for laser 3D printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103990800B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522150A (en) * | 2015-12-30 | 2016-04-27 | 哈尔滨工业大学 | Uniform powder feeding head suitable for production or deposition of semiconductor laser enhanced material |
| CN105689712A (en) * | 2016-02-04 | 2016-06-22 | 上海航天精密机械研究所 | Method and device for laser direct manufacturing for metal-matrix composite structural part |
| CN106637193A (en) * | 2016-12-06 | 2017-05-10 | 郭达伟 | Coaxial laser melting device, powder conveying machine and melting method of melting device |
| CN110938818A (en) * | 2019-12-20 | 2020-03-31 | 西安交通大学 | Paraxial powder feeding device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060266740A1 (en) * | 2004-02-03 | 2006-11-30 | Toyota Jidosha Kabushiki Kaisha | Powder metal cladding nozzle |
| CN101695752A (en) * | 2009-10-27 | 2010-04-21 | 淮海工学院 | Precise laser micro-forming and powder feed method and coaxial laser powder device thereof |
| CN103056363A (en) * | 2011-10-19 | 2013-04-24 | 新加坡科技研究局 | Powder feeding nozzle, components and methods for manufacturing laser assisted additive |
| CN202963453U (en) * | 2012-11-21 | 2013-06-05 | 沈阳航空航天大学 | Laser rapid prototyping coaxial powder conveying nozzle with protective cover |
| CN203890442U (en) * | 2014-05-29 | 2014-10-22 | 烟台泰利汽车模具制造有限公司 | Pressure-relief paraxial powder feed nozzle device for laser 3D (Three-dimensional) printer |
-
2014
- 2014-05-29 CN CN201410235079.6A patent/CN103990800B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060266740A1 (en) * | 2004-02-03 | 2006-11-30 | Toyota Jidosha Kabushiki Kaisha | Powder metal cladding nozzle |
| CN101695752A (en) * | 2009-10-27 | 2010-04-21 | 淮海工学院 | Precise laser micro-forming and powder feed method and coaxial laser powder device thereof |
| CN103056363A (en) * | 2011-10-19 | 2013-04-24 | 新加坡科技研究局 | Powder feeding nozzle, components and methods for manufacturing laser assisted additive |
| CN202963453U (en) * | 2012-11-21 | 2013-06-05 | 沈阳航空航天大学 | Laser rapid prototyping coaxial powder conveying nozzle with protective cover |
| CN203890442U (en) * | 2014-05-29 | 2014-10-22 | 烟台泰利汽车模具制造有限公司 | Pressure-relief paraxial powder feed nozzle device for laser 3D (Three-dimensional) printer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522150A (en) * | 2015-12-30 | 2016-04-27 | 哈尔滨工业大学 | Uniform powder feeding head suitable for production or deposition of semiconductor laser enhanced material |
| CN105689712A (en) * | 2016-02-04 | 2016-06-22 | 上海航天精密机械研究所 | Method and device for laser direct manufacturing for metal-matrix composite structural part |
| CN106637193A (en) * | 2016-12-06 | 2017-05-10 | 郭达伟 | Coaxial laser melting device, powder conveying machine and melting method of melting device |
| CN106637193B (en) * | 2016-12-06 | 2019-03-12 | 郭达伟 | A kind of coaxial laser cladding apparatus and packing auger and its cladding method |
| CN110938818A (en) * | 2019-12-20 | 2020-03-31 | 西安交通大学 | Paraxial powder feeding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103990800B (en) | 2016-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103990800A (en) | Pressure relief type paraxial powder feeding spray nozzle device for laser 3D printer | |
| CN104324839B (en) | The most focusing a kind of ultrasonic atomizatio shower nozzle | |
| CN203890442U (en) | Pressure-relief paraxial powder feed nozzle device for laser 3D (Three-dimensional) printer | |
| CN202043371U (en) | Supersonic plasma spray gun | |
| CN104694922A (en) | Ring hole type laser coaxial powder feeding nozzle | |
| CN201664642U (en) | Swirl jet | |
| CN101942656B (en) | Laser nozzle device and method for uniformly distributing powder | |
| CN103897721B (en) | A kind of efficient catalytic cracking unit riser feed nozzle and atomization method | |
| CN202099345U (en) | Coaxial blowing type gas protection device | |
| CN204602470U (en) | A kind of powder paint rifle | |
| CN201834946U (en) | Annular water blowing device | |
| CN201558762U (en) | High pressure spray nozzle | |
| CN103157800A (en) | Collecting device of high-temperature alloy powder | |
| CN113351887B (en) | Powder feeding head and 3D printing device capable of enabling welding wires and powder to be synchronously fed | |
| CN213559159U (en) | Auxiliary cooling simulation device for hot-rolled steel bar production line | |
| CN204769212U (en) | Atomiser spray nozzle | |
| CN204918688U (en) | Spraying cooling device | |
| CN202922087U (en) | Argon protection device for stainless steel welded tube | |
| CN202555437U (en) | Laser side power feeding device | |
| CN210230337U (en) | Spray gun for uniformly spraying and arranging solid particles | |
| CN207138138U (en) | A kind of building site depositing dust cooling spray equipment | |
| CN201776195U (en) | Laser nozzle device | |
| CN2360164Y (en) | Dusting appts of collecting powder | |
| CN205042640U (en) | Multi -functional spray gun head and spray gun | |
| CN203425939U (en) | Atomization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 264003, No. 42, pioneering Road, hi tech Zone, Shandong, Yantai Applicant after: YANTAI TAILI AUTOMOBILE TOOLING CO.,LTD. Address before: 264670, No. 42, pioneering Road, hi tech Zone, Shandong, Yantai Applicant before: Yantai Taili Automobile Tooling Co.,Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: YANTAI TAILI AUTOMOBILE TOOLING CO., LTD. TO: YANTAI TAILI AUTOMOBILE MOULD CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Junqiang Inventor after: Shao Dongqiang Inventor before: Ji Shengwei Inventor before: Shao Dongqiang |
|
| CB03 | Change of inventor or designer information | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Pressure relief type paraxial powder feeding spray nozzle device for laser 3D printer Effective date of registration: 20170918 Granted publication date: 20160713 Pledgee: Bank of China Limited by Share Ltd. Yantai branch Pledgor: YANTAI TAILI AUTOMOBILE TOOLING CO.,LTD. Registration number: 2017980000356 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190923 Granted publication date: 20160713 Pledgee: Bank of China Limited by Share Ltd. Yantai branch Pledgor: YANTAI TAILI AUTOMOBILE TOOLING CO.,LTD. Registration number: 2017980000356 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A pressure relief side shaft powder feeding nozzle device for laser 3D printer Effective date of registration: 20220628 Granted publication date: 20160713 Pledgee: Agricultural Bank of China Limited by Share Ltd. Yantai hi tech Zone subbranch Pledgor: YANTAI TAILI AUTOMOBILE TOOLING CO.,LTD. Registration number: Y2022980009147 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230727 Granted publication date: 20160713 Pledgee: Agricultural Bank of China Limited by Share Ltd. Yantai hi tech Zone subbranch Pledgor: YANTAI TAILI AUTOMOBILE TOOLING CO.,LTD. Registration number: Y2022980009147 |