CN115805371A - Multi-angle seamless welding equipment for hydrogen energy automobile bipolar plate - Google Patents
Multi-angle seamless welding equipment for hydrogen energy automobile bipolar plate Download PDFInfo
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- CN115805371A CN115805371A CN202310040637.2A CN202310040637A CN115805371A CN 115805371 A CN115805371 A CN 115805371A CN 202310040637 A CN202310040637 A CN 202310040637A CN 115805371 A CN115805371 A CN 115805371A
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- plate
- fixed
- driving
- bipolar plate
- limiting
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- 238000003466 welding Methods 0.000 title claims abstract description 61
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 19
- 239000001257 hydrogen Substances 0.000 title claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 43
- 210000000078 claw Anatomy 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 claims description 13
- 230000017525 heat dissipation Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses multi-angle seamless welding equipment for a hydrogen energy automobile bipolar plate, which relates to the technical field of bipolar plate welding and comprises the following components: a base plate; at least four upright posts are arranged on the upper end surface of the bottom plate respectively; the top plate is arranged on the upright post; the four rotary cylinders are symmetrically fixed on the lower end face of the top plate, the output ends of the rotary cylinders penetrate through the top plate and are fixed with pressing claws, and magnetic parts are fixed on the pressing claws; the limiting plate is detachably arranged on the upper end face of the top plate; the pressing assembly is arranged on the limiting plate in a sliding mode; the four corners of the bipolar plate are arranged on the upper end face of the top plate by positioning columns, and the positioning columns fix the bipolar plate through electromagnets fixed on the lower end face of the top plate; the positioning post and the electromagnet can be used for positioning and pressing the four corners of the bipolar plate, and the pressing assembly moves along with the welding head during welding, so that the welding position is prevented from micro deformation, and the welding tightness is improved.
Description
Technical Field
The invention relates to the technical field of bipolar plate welding, in particular to multi-angle seamless welding equipment for a hydrogen energy automobile bipolar plate.
Background
Bipolar plates, also known as collector plates, are one of the important components of fuel cells. Bipolar plate generally uses laser welding to guarantee the leakproofness when welding, and current bipolar plate welding set generally adopts when the welding to press bipolar plate four corners position, later welding, nevertheless presses down through the four corners and can lead to taking place small deformation in the place of keeping away from bipolar plate four corners position, leads to the welding seam too big and influence the leakproofness, and fixed bipolar plate's platform can not carry out the angle modulation.
Aiming at the problems, the invention provides multi-angle seamless welding equipment for a hydrogen energy automobile bipolar plate, which aims to solve the problems.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a hydrogen energy automobile bipolar plate is with multi-angle seamless welding equipment, includes:
a base plate;
at least four upright posts are arranged at the positions of four corners of the upper end surface of the bottom plate respectively;
the top plate is arranged on the upright post;
the four rotary cylinders are symmetrically fixed on the lower end face of the top plate, the output ends of the rotary cylinders penetrate through the top plate, pressing claws are fixed on each rotary cylinder, and magnetic parts are fixed on the pressing claws;
the limiting plate is detachably arranged on the upper end face of the top plate;
the pressing assembly is arranged on the limiting plate in a sliding mode; and
and the four corners of the bipolar plate are arranged on the upper end face of the top plate by positioning columns, and the positioning columns are used for fixing the bipolar plate through electromagnets fixed on the lower end face of the top plate.
Further, preferably, the column includes:
the two ends of the outer cylinder are respectively arranged in the bottom plate and the top plate in a sliding manner;
the limiting rings are symmetrically fixed at two ends of the outer barrel; and
the automatic telescopic rods are arranged in two and symmetrically fixed in the outer barrel, and the output ends of the automatic telescopic rods are hinged to the bottom plate and the top plate respectively.
Further, preferably, the shape of the limiting plate is the same as that of the bipolar plate, a sliding groove is formed in the limiting plate, a first limiting groove and a second limiting groove are formed in the inner walls of the two sides of the sliding groove respectively, and a third limiting groove is formed in the position, far away from the bipolar plate, of the limiting plate.
Further, preferably, the pressing assembly includes:
the driving assembly is arranged in the sliding groove in a sliding mode;
the lifting plate is arranged on the driving component in a vertically sliding manner;
the heat dissipation plate is fixed on one side of the lifting plate close to the bipolar plate;
the pressing rods are symmetrically fixed on the heat dissipation plate;
the pressing roller is rotatably arranged on one side, close to the driving assembly, of the pressing rod by adopting a rotating shaft;
the three blowing fans are fixed on one side of the heat dissipation plate, which is far away from the lifting plate, and are respectively positioned on two sides and the middle position of the pressing rod;
the lifting device is fixed on the lifting plate, and the output end of the lifting device is connected with the driving assembly;
the two hinge rods are symmetrically hinged to the lifting plate at one end, and a torsion spring is arranged at the hinged position; and
the telescopic column is rotatably arranged at the other end of the hinge rod, a telescopic end of the telescopic column is rotatably provided with a limiting wheel, and the limiting wheel can be arranged in the third limiting groove in a rolling manner.
Further, preferably, the rotating shaft and the rotating shaft of the blowing fan both extend into the heat dissipation plate and are in meshing transmission through a bevel gear set.
Further, preferably, the pressing assembly includes:
a driving plate, in which a driving motor is fixed;
the driving tooth is fixed at the output end of the driving motor;
the second driving wheel is fixed on one end face, far away from the driving motor, of the driving tooth and rolls in the second limiting groove;
at least four sliding columns which are fixed on the upper end surface of the driving plate and are connected with the lifting plate in a sliding manner;
one end of the connecting shaft is fixed at the axis position of the second driving wheel, and the other end of the connecting shaft is rotatably arranged at the output end of the lifting device;
the driven gear is rotationally arranged on the driving plate and is in meshing transmission with the driving gear; and
and the first driving gear is fixed on the lower end face of the driven gear by adopting an extension shaft and rolls in the first limiting groove.
Compared with the prior art, the invention provides multi-angle seamless welding equipment for a hydrogen energy automobile bipolar plate, which has the following beneficial effects:
according to the invention, the four corners of the bipolar plate can be positioned and pressed through the positioning column and the electromagnet, the pressing assembly moves along with the welding head during welding, so that the welding position is prevented from generating micro deformation, the welding tightness is greatly improved, in addition, when the pressing assembly moves, the welding position on the surface of the bipolar plate can be respectively cleaned through the three blowing fans, sundries are prevented from being existing during welding, the cooling is performed during welding, the overhigh welding temperature is avoided, the cleaning and the cooling are performed after the welding, the welding residues in the welding path are avoided, the temperature of the welding surface is further reduced, and the cooling effect is improved.
Drawings
FIG. 1 is a general schematic view of a multi-angle seamless welding apparatus for a hydrogen energy automobile bipolar plate;
FIG. 2 is a schematic cross-sectional view of a limiting plate of a multi-angle seamless welding device for a hydrogen energy automobile bipolar plate;
FIG. 3 is a schematic view of a pressing assembly of a multi-angle seamless welding device for a hydrogen energy automobile bipolar plate;
FIG. 4 is a schematic view of the inside of a heat sink plate of a multi-angle seamless welding apparatus for a hydrogen energy automobile bipolar plate;
FIG. 5 is a schematic view of a driving assembly of a multi-angle seamless welding device for a hydrogen energy automobile bipolar plate;
in the figure: 1. a base plate; 2. a column; 3. a top plate; 4. a rotating cylinder; 5. a limiting plate; 6. a pressing assembly; 7. a bipolar plate; 8. a positioning column; 21. an outer cylinder; 22. automatically telescoping the rod; 23. a limiting ring; 41. pressing claws; 42. a magnetic member; 51. a sliding groove; 52. a first limiting groove; 53. a second limiting groove; 54. a third limiting groove; 61. a drive assembly; 62. a lifting plate; 63. a heat dissipation plate; 64. a pressing lever; 65. pressing the roller; 66. an air blowing fan; 67. a lifting device; 68. a hinged lever; 69. a telescopic column; 651. a rotating shaft; 652. a bevel gear set; 611. a drive plate; 612. a driving tooth; 613. a second driving wheel; 614. a sliding post; 615. a connecting shaft; 616. a driven tooth; 617. the first driving gear.
Detailed description of the preferred embodiments
Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a hydrogen energy automobile bipolar plate is with multi-angle seamless welding equipment, includes:
a base plate 1;
at least four upright posts 2 are arranged at the four corners of the upper end surface of the bottom plate 1 respectively;
a top plate 3 mounted on the column 2;
four rotary cylinders 4 symmetrically fixed on the lower end surface of the top plate 3, wherein the output end of each rotary cylinder 4 penetrates through the top plate 3, each rotary cylinder 4 is fixed with a pressing claw 41, and a magnetic member 42 is fixed on each pressing claw 41;
the limiting plate 5 is detachably arranged on the upper end face of the top plate 3;
the pressing component 6 is arranged on the limiting plate 5 in a sliding manner; and
and four corners of the bipolar plate 7 are arranged on the upper end face of the top plate 3 by positioning columns 8, and the positioning columns 8 fix the bipolar plate 7 through electromagnets fixed on the lower end face of the top plate 3.
It should be noted that the pressing assembly 6 is always located below the laser welding head, and the rotary cylinder 4 is a 90 ° cylinder.
In the present embodiment, the column 2 includes:
an outer cylinder 21 having both ends slidably disposed in the bottom plate 1 and the top plate 3, respectively;
the limiting rings 23 are symmetrically fixed at two ends of the outer cylinder 21; and
the number of the automatic telescopic rods 22 is two, the two automatic telescopic rods are symmetrically fixed in the outer barrel 21, and the output ends of the two automatic telescopic rods 22 are respectively hinged to the bottom plate 1 and the top plate 3.
That is to say, when needs carry out the plane welding, make spacing ring 23 get into in bottom plate 1 and the roof 3 through automatic telescopic link 22 to make bottom plate 1 support roof 3, improve stability, when needs carry out the angle welding, earlier through two automatic telescopic link 22 stretches out and draws back jointly, make spacing ring 23 at urceolus 21 both ends all breaks away from bottom plate 1 and roof 3, later two automatic telescopic link 22 stretches out and draws back alone respectively, thereby carries out angle modulation.
In this embodiment, the shape of the limiting plate 5 is the same as that of the bipolar plate 7, a sliding groove 51 is formed in the limiting plate 5, a first limiting groove 52 and a second limiting groove 53 are respectively formed on inner walls of two sides of the sliding groove 51, and a third limiting groove 54 is formed in a position of the limiting plate 5 away from the bipolar plate 7.
As a preferred embodiment, the pressing assembly 6 comprises:
a driving assembly 61 slidably disposed in the sliding groove 51;
a lifting plate 62 which is arranged on the driving component 61 in a vertically sliding manner;
a heat dissipation plate 63 fixed to the side of the elevation plate 62 adjacent to the bipolar plate 7;
pressing rods 64 symmetrically fixed to the heat radiating plate 63;
a pressing roller 65 rotatably disposed on a side of the pressing rod 64 close to the driving assembly 61 by a rotating shaft 651;
three blowing fans 66 fixed to the heat dissipating plate 63 on a side thereof away from the elevating plate 62 and located at both sides and a middle position of the pressing rod 64;
the lifting device 67 is fixed on the lifting plate 62, and the output end of the lifting device 67 is connected with the driving component 61;
two hinge rods 68, one end of each of which is symmetrically hinged to the lifting plate 62, and a torsion spring is arranged at the hinged position; and
the telescopic column 69 is rotatably arranged at the other end of the hinge rod 68, a limiting wheel is rotatably arranged at the telescopic end of the telescopic column 69, and the limiting wheel can be arranged in the third limiting groove 54 in a rolling manner.
It should be noted that the three blowing fans 66 can respectively clean the welding positions on the surface of the bipolar plate 7 before welding, so as to avoid the existence of impurities during welding, cool the welding, avoid the overhigh welding temperature, clean and cool the welding, avoid the existence of welding residues in the welding path, further reduce the temperature of the welding surface and improve the cooling effect;
further, the angles of the fan blades of the three air blowing fans 66 are determined according to the rotating directions of the three air blowing fans, so that the air blowing fans 66 can generate an outward air blowing effect;
preferably, the two hinge rods 68 are maintained at the same angle without the force of the torsion spring, and when the pressing assembly 6 moves to the curved position of the limiting plate 5, the hinge rods 68 can rotate, so that the pressing assembly 6 can move more smoothly.
In a preferred embodiment, the rotating shaft 651 and the rotating shaft of the blowing fan 66 both extend into the heat dissipating plate 63 and are engaged and driven by a bevel gear set 652.
As a preferred embodiment, the pressing assembly 6 comprises:
a driving plate 611, inside which a driving motor is fixed;
a driving tooth 612 fixed at an output end of the driving motor;
a second driving wheel 613 fixed to an end surface of the driving tooth 612 away from the driving motor, wherein the second driving wheel 613 rolls in the second limiting groove 53;
at least four sliding columns 614 fixed on the upper end surface of the driving plate 611 and slidably connected with the lifting plate 62;
one end of the connecting shaft 615 is fixed at the axis position of the second driving wheel 613, and the other end is rotatably arranged at the output end of the lifting device 67;
the driven teeth 616 are rotatably arranged on the driving plate 611, and the driven teeth 616 are in meshing transmission with the driving teeth 612; and
and a first driving tooth 617 which is fixed on the lower end surface of the driven tooth 616 by using an extension shaft, wherein the first driving tooth 617 rolls in the first limiting groove 52.
It should be noted that the length of the pressing rod 64 is less than the distance from the edge of the bipolar plate 7 to the positioning post 8, so as to avoid interference.
Specifically, firstly, adjust roof 3 through stand 2, confirm the welding angle, later place bipolar plate 7 on roof 3, and fix a position bipolar plate 7 through reference column 8 that magnetism piece 42 of revolving cylinder 4 adsorbs, later turn on the electro-magnet, adsorb reference column 8, and press down the centre gripping to bipolar plate 7, later revolving cylinder 4 resets, break away from bipolar plate, later press down subassembly 6 and make through elevating gear 67 press down the pressure roller 65 and produce the local pressure to bipolar plate 7, it welds to open the laser welding head to press down the position partially, when the laser welding head moves along bipolar plate 7 marginal route, press down subassembly 6 and carry out synchronous motion through drive assembly 61, guarantee to carry out the local pressure all the time to the welding position, the leakproofness of welding has been improved, until the welding is accomplished.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (6)
1. The utility model provides a hydrogen energy automobile bipolar plate is with multi-angle seamless welding equipment which characterized in that: the method comprises the following steps:
a base plate (1);
at least four upright posts (2) are arranged at the four corners of the upper end surface of the bottom plate (1) respectively;
a top plate (3) mounted on the column (2);
the rotary cylinders (4) are arranged in four, symmetrically fixed on the lower end face of the top plate (3), the output ends of the rotary cylinders (4) penetrate through the top plate (3), each rotary cylinder (4) is fixed with a pressing claw (41), and a magnetic part (42) is fixed on each pressing claw (41);
the limiting plate (5) is detachably arranged on the upper end face of the top plate (3);
the pressing component (6) is arranged on the limiting plate (5) in a sliding mode; and
the four corners of the bipolar plate (7) are arranged on the upper end face of the top plate (3) by positioning columns (8), and the positioning columns (8) fix the bipolar plate (7) through electromagnets fixed on the lower end face of the top plate (3).
2. The multi-angle seamless welding equipment for the hydrogen energy automobile bipolar plate as claimed in claim 1, wherein: the upright (2) comprises:
an outer cylinder (21) having both ends slidably disposed in the bottom plate (1) and the top plate (3), respectively;
the limiting rings (23) are symmetrically fixed at two ends of the outer cylinder (21); and
the automatic telescopic rods (22) are arranged in two and symmetrically fixed in the outer barrel (21), and the output ends of the automatic telescopic rods (22) are hinged to the bottom plate (1) and the top plate (3) respectively.
3. The multi-angle seamless welding equipment for the hydrogen energy automobile bipolar plate as claimed in claim 1, wherein: the shape of the limiting plate (5) is the same as that of the bipolar plate (7), a sliding groove (51) is formed in the limiting plate (5), a first limiting groove (52) and a second limiting groove (53) are respectively formed in the inner walls of the two sides of the sliding groove (51), and a third limiting groove (54) is formed in the position, far away from the bipolar plate (7), of the limiting plate (5).
4. The multi-angle seamless welding equipment for the bipolar plate of the hydrogen energy automobile as claimed in claim 3, wherein: the pressing assembly (6) comprises:
a driving component (61) which is arranged in the sliding groove (51) in a sliding way;
the lifting plate (62) is arranged on the driving component (61) in a vertically sliding manner;
a heat dissipation plate (63) fixed on one side of the lifting plate (62) close to the bipolar plate (7);
pressing rods (64) symmetrically fixed on the heat dissipation plate (63);
the pressing roller (65) is rotatably arranged on one side, close to the driving assembly (61), of the pressing rod (64) by adopting a rotating shaft (651);
three blowing fans (66) which are fixed on one side of the heat dissipation plate (63) far away from the lifting plate (62) and are respectively positioned on two sides and the middle position of the pressing rod (64);
the lifting device (67) is fixed on the lifting plate (62), and the output end of the lifting device (67) is connected with the driving component (61);
the two hinge rods (68) are arranged, one ends of the two hinge rods are symmetrically hinged on the lifting plate (62), and a torsion spring is arranged at the hinged position; and
the telescopic column (69) is rotatably arranged at the other end of the hinge rod (68), a limiting wheel is rotatably arranged at the telescopic end of the telescopic column (69), and the limiting wheel can be arranged in the third limiting groove (54) in a rolling manner.
5. The multi-angle seamless welding equipment for the hydrogen energy automobile bipolar plate as claimed in claim 4, wherein: the rotating shafts (651) and the rotating shafts of the blowing fans (66) extend into the heat dissipation plate (63) and are in meshing transmission through a bevel gear set (652).
6. The multi-angle seamless welding equipment for the hydrogen energy automobile bipolar plate as claimed in claim 4, wherein: the pressing assembly (6) comprises:
a drive plate (611) in which a drive motor is fixed;
a driving tooth (612) fixed at an output end of the driving motor;
a second driving wheel (613) fixed on one end face of the driving tooth (612) far away from the driving motor, wherein the second driving wheel (613) rolls in the second limiting groove (53);
at least four sliding columns (614) fixed on the upper end surface of the driving plate (611) and connected with the lifting plate (62) in a sliding manner;
one end of the connecting shaft (615) is fixed at the axis position of the second driving wheel (613), and the other end of the connecting shaft is rotatably arranged at the output end of the lifting device (67);
the driven teeth (616) are rotationally arranged on the driving plate (611), and the driven teeth (616) are in meshing transmission with the driving teeth (612); and
and the first driving tooth (617) is fixed on the lower end surface of the driven tooth (616) by adopting an extension shaft, and the first driving tooth (617) rolls in the first limiting groove (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310040637.2A CN115805371B (en) | 2023-01-12 | 2023-01-12 | Multi-angle seamless welding equipment for bipolar plate of hydrogen energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310040637.2A CN115805371B (en) | 2023-01-12 | 2023-01-12 | Multi-angle seamless welding equipment for bipolar plate of hydrogen energy automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115805371A true CN115805371A (en) | 2023-03-17 |
| CN115805371B CN115805371B (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310040637.2A Active CN115805371B (en) | 2023-01-12 | 2023-01-12 | Multi-angle seamless welding equipment for bipolar plate of hydrogen energy automobile |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0559610A1 (en) * | 1992-03-06 | 1993-09-08 | Meistermatic Ag | Large surface automatic welder for welding plastic sheets |
| CN109623245A (en) * | 2019-01-14 | 2019-04-16 | 安徽明天氢能科技股份有限公司 | A kind of hydrogen fuel cell bipolar plates full automatic welding welding fixture |
| CN211102383U (en) * | 2019-10-09 | 2020-07-28 | 无锡先导智能装备股份有限公司 | Positioning device and welding equipment |
| CN112719807A (en) * | 2020-12-24 | 2021-04-30 | 江阴东华铝材科技有限公司 | Manufacturing method of battery replacing box body of new energy automobile |
| CN215356713U (en) * | 2021-04-21 | 2021-12-31 | 京源中科科技(泉州)有限公司 | Laser welding device applied to metal bipolar plate of fuel cell |
| CN217727629U (en) * | 2022-02-21 | 2022-11-04 | 江苏氢导智能装备有限公司 | Welding positioning device and bipolar plate sealing welding equipment |
-
2023
- 2023-01-12 CN CN202310040637.2A patent/CN115805371B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0559610A1 (en) * | 1992-03-06 | 1993-09-08 | Meistermatic Ag | Large surface automatic welder for welding plastic sheets |
| CN109623245A (en) * | 2019-01-14 | 2019-04-16 | 安徽明天氢能科技股份有限公司 | A kind of hydrogen fuel cell bipolar plates full automatic welding welding fixture |
| CN211102383U (en) * | 2019-10-09 | 2020-07-28 | 无锡先导智能装备股份有限公司 | Positioning device and welding equipment |
| CN112719807A (en) * | 2020-12-24 | 2021-04-30 | 江阴东华铝材科技有限公司 | Manufacturing method of battery replacing box body of new energy automobile |
| CN215356713U (en) * | 2021-04-21 | 2021-12-31 | 京源中科科技(泉州)有限公司 | Laser welding device applied to metal bipolar plate of fuel cell |
| CN217727629U (en) * | 2022-02-21 | 2022-11-04 | 江苏氢导智能装备有限公司 | Welding positioning device and bipolar plate sealing welding equipment |
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| CN115805371B (en) | 2023-05-26 |
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Effective date of registration: 20240102 Address after: 215000 No.16, Tianling Road, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Shixin Metal Technology Co.,Ltd. Address before: 215000 No.16, Tianling Road, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: SEKSUN TECHNOLOGY (SUZHOU) Co.,Ltd. |
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