CN112616264A - Circuit board tin cream printing machine - Google Patents
Circuit board tin cream printing machine Download PDFInfo
- Publication number
- CN112616264A CN112616264A CN202011480426.3A CN202011480426A CN112616264A CN 112616264 A CN112616264 A CN 112616264A CN 202011480426 A CN202011480426 A CN 202011480426A CN 112616264 A CN112616264 A CN 112616264A
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- Prior art keywords
- piece
- sliding
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- plate
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1216—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by screen printing or stencil printing
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3478—Applying solder preforms; Transferring prefabricated solder patterns
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Screen Printers (AREA)
Abstract
The invention discloses a circuit board solder paste printing machine, which comprises a fixed piece, wherein an adjusting piece is arranged on the fixed piece, a first driving piece is arranged on the fixed piece, a first sliding piece is arranged on the fixed piece, a second driving piece is arranged on the first sliding piece, a second sliding piece is arranged on the first sliding piece, third driving pieces which are symmetrically distributed are arranged on the second sliding piece, and a printing piece is arranged below the third driving piece; the regulating part comprises a first supporting plate, a first sliding block is arranged below the first supporting plate, and a first fixing block is arranged below the first supporting plate. The printing machine can adjust the position of the circuit board, reduces the problems of printing offset and inaccurate position caused by different specifications of the circuit board, improves the printing quality and precision, is flexible and convenient, has double printing parts, does not need to return after single printing, and improves the printing efficiency because the printing parts work alternately, and the steel mesh frame is convenient to disassemble, is convenient for implementing and operating different printing works, reduces the replacement time and reduces the working strength.
Description
Technical Field
The invention relates to a printer, in particular to a circuit board tin paste printer.
Background
Modern solder paste printing machines generally comprise mechanisms such as plate loading, solder paste adding, stamping, power transmission circuit boards and the like. The working principle of the automatic paster-mounting machine is that a circuit board to be printed is fixed on a printing positioning table, then solder paste or red glue is subjected to screen printing on corresponding bonding pads through a steel mesh by a left scraper and a right scraper of the printing machine, and the PCB with uniform screen printing is input into the paster-mounting machine through a transmission table to be subjected to automatic paster mounting. The existing solder paste printing machine has the defects of poor adjusting performance, difficulty in being suitable for various circuit boards and low printing efficiency.
Disclosure of Invention
The invention aims to provide a circuit board solder paste printing machine, wherein a circuit board is fixed on a second supporting plate by using a bolt, a first threaded rod and a second threaded rod are rotated, the circuit board is adjusted to be positioned below a steel mesh, a first motor is started to drive a lead screw to rotate, a first sliding part is driven to move downwards through a connecting block in threaded fit with the lead screw, the steel mesh is enabled to tightly press the circuit board, solder paste is poured in, the output shaft of a hydraulic cylinder of a left third driving part extends to drive a scraper to tightly press the steel mesh, a second motor is started to drive a second sliding part, a third driving part and a printing part to move right, the scraper is enabled to print the solder paste onto the circuit board through the steel mesh, the output shaft of the hydraulic cylinder returns, the first motor drives the first sliding part to move upwards to replace a circuit board to be printed, the operation is repeated, the output shaft of, the scraper moves to the left and carries out printing for the second time to the galley, and the printing machine can carry out position control to the circuit board, reduces because of the different printing skew and the coarse problem in position that leads to of circuit board specification, improves printing quality and precision, and is nimble convenient, and two printing member settings need not to return after the single printing, and printing member works in turn, improves printing efficiency, and the steel framework dismantlement is convenient, and the different printing work of being convenient for implements the operation, reduces the change time, reduces working strength.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a circuit board tin cream printing machine, printing machine includes the mounting, be equipped with the regulating part on the mounting, be equipped with first driving piece on the mounting, be equipped with first slider on the mounting, be equipped with the second driving piece on the first slider, be equipped with the second slider on the first slider, be equipped with the third driving piece of symmetric distribution on the second slider, the below of third driving piece is equipped with printing piece.
The regulating part includes first backup pad, the below of first backup pad is equipped with first slider, the below of first backup pad is equipped with first fixed block, be equipped with first screw hole on the first fixed block, first screw hole female thread fit is equipped with first threaded rod, the top of first backup pad is equipped with the third slide rail, be equipped with the second slider on the third slide rail, it is equipped with the second threaded rod to rotate on the first backup pad, it is equipped with the second backup pad to slide on the second slider, be equipped with array distribution's second screw hole in the second backup pad, the below of second backup pad is equipped with the second fixed block, be equipped with the third screw hole on the second fixed block.
The first sliding part comprises a connecting plate, a fourth sliding rail is arranged on the connecting plate, a supporting frame is arranged on the connecting plate, a sliding groove is formed in the supporting frame, a steel net rack is arranged in the sliding groove in a sliding mode, and a steel mesh is arranged on the steel net rack.
Further, the mounting includes the fixing base, and the below of fixing base is equipped with the mount, is equipped with first slide rail on the fixing base, is equipped with the fixed plate on the fixing base, is equipped with the support column on the fixing base, is equipped with the second slide rail on the support column.
Further, third screw hole and second threaded rod screw-thread fit, second threaded rod and fixed plate rotate to be connected, first slider and first slide rail sliding connection.
Further, first driving piece includes first motor, and the output shaft fastening of first motor is connected with the lead screw, and screw-thread fit is equipped with the connecting block on the lead screw, first motor and support column fastening, and the lead screw rotates with the support column to be connected.
Furthermore, rotate on the connecting plate and be equipped with first band pulley, one side of connecting plate is equipped with the third slider, and first slider passes through the cooperation of third slider and second slide rail and mounting sliding connection, and the connecting block passes through screw rod fastening connection with the support frame with the connecting plate, steel net rack.
Further, the second driving piece comprises a second motor, an output shaft of the second motor is fixedly connected with a second belt wheel, the second belt wheel is connected with the first belt wheel through a belt in a transmission mode, and the second motor is fixedly connected with the connecting plate.
Furthermore, the second sliding part comprises a third supporting plate, a fourth sliding block is arranged on the third supporting plate, a locking block is arranged on the third supporting plate, a fourth supporting plate is arranged on the third supporting plate, a guide hole is formed in the fourth supporting plate, the second sliding part is in sliding connection with the first sliding part through the matching of the fourth sliding block and a fourth sliding rail, and the locking block is fixedly connected with the belt.
Furthermore, the third driving piece comprises a hydraulic cylinder, an output shaft of the hydraulic cylinder penetrates through a third supporting plate and is fixedly connected with a first supporting block, a guide column is arranged below the first supporting block, a second supporting block is arranged below the guide column, the hydraulic cylinder is fixedly connected with the third supporting plate, and the guide column is matched with the guide hole.
Further, the printing part comprises a third supporting block, a clamping plate is rotatably arranged on the third supporting block, a scraper is obliquely arranged on the clamping plate, the clamping plate is fixedly connected with the third supporting block through a screw, and the third supporting block is fixedly connected with the second supporting block.
The invention has the beneficial effects that:
1. the position of the circuit board of the printing machine is adjustable, the problems of printing offset and position inaccuracy caused by different specifications of the circuit board are solved, the printing quality and precision are improved, the printing machine is flexible, convenient and fast, the application range is wide, double printing pieces are arranged, return is not needed after single printing, the printing pieces alternately work, and the printing efficiency is improved;
2. the steel mesh frame of the printing machine is convenient to disassemble, different printing works can be conveniently operated, the replacement time is shortened, and the working strength is reduced.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the printing press configuration of the present invention;
FIG. 2 is a schematic view of a portion of the printer of the present invention;
FIG. 3 is a schematic view of the structure of the adjusting member of the present invention;
FIG. 4 is a schematic view of a portion of the adjuster of the present invention;
FIG. 5 is a schematic view of a portion of the adjuster of the present invention;
FIG. 6 is a schematic view of a portion of the printer of the present invention;
FIG. 7 is a schematic view of a part of the printer according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a circuit board tin cream printing machine, printing machine includes mounting 1, as shown in figure 1, is equipped with regulating part 2 on the mounting 1, is equipped with first driving piece 3 on the mounting 1, is equipped with first slider 4 on the mounting 1, is equipped with second driving piece 5 on the first slider 4, is equipped with second slider 6 on the first slider 4, is equipped with the third driving piece 7 of symmetric distribution on the second slider 6, and the below of third driving piece 7 is equipped with printing 8.
The fixing member 1 includes a fixing seat 11, as shown in fig. 2, a fixing frame 12 is disposed below the fixing seat 11, a first slide rail 13 is disposed on the fixing seat 11, a fixing plate 14 is disposed on the fixing seat 11, a support pillar 15 is disposed on the fixing seat 11, and a second slide rail 16 is disposed on the support pillar 15.
The adjusting member 2 comprises a first support plate 21, as shown in figures 3 and 4, as shown in fig. 5, a first sliding block 211 is arranged below the first supporting plate 21, a first fixing block 22 is arranged below the first supporting plate 21, a first threaded hole 23 is formed in the first fixing block 22, a first threaded rod 24 is arranged in the first threaded hole 23 in a matched manner, a third sliding rail 25 is arranged above the first supporting plate 21, a second sliding block 251 is arranged on the third sliding rail 25, a second threaded rod 26 is arranged on the first supporting plate 21 in a rotating manner, a second supporting plate 27 is arranged on the second sliding block 251 in a sliding manner, second threaded holes 271 distributed in an array manner are formed in the second supporting plate 27, a second fixing block 28 is arranged below the second supporting plate 27, a third threaded hole 29 is formed in the second fixing block 28, the third threaded hole 29 is in a matched manner with the second threaded rod 26 in a threaded manner, the second threaded rod 26 is rotatably connected with the fixing plate 14, and.
The first driving member 3 includes a first motor 31, as shown in fig. 2, an output shaft of the first motor 31 is fixedly connected with a lead screw 32, a connecting block 33 is arranged on the lead screw 32 in a threaded fit manner, the first motor 31 is fixedly connected with the supporting column 15, and the lead screw 32 is rotatably connected with the supporting column 15.
The second driving member 5 includes a second motor 51, as shown in fig. 6, an output shaft of the second motor 51 is tightly connected with a second belt wheel 52, the second belt wheel 52 is in transmission connection with the first belt wheel 47 through a belt, and the second motor 51 is tightly connected with the connecting plate 41.
The second sliding member 6 includes a third supporting plate 61, as shown in fig. 7, a fourth sliding block 62 is disposed on the third supporting plate 61, a locking block 63 is disposed on the third supporting plate 61, a fourth supporting plate 65 is disposed on the third supporting plate 61, a guiding hole 66 is disposed on the fourth supporting plate 65, the second sliding member 6 is slidably connected to the first sliding member 4 through the fourth sliding block 62 and the fourth sliding rail 42, and the locking block 63 is fastened to the belt.
The third driving member 7 includes a hydraulic cylinder 71, as shown in fig. 6 and 7, an output shaft of the hydraulic cylinder 71 passes through the third support plate 61 and is fixedly connected with a first support block 72, a guide post 73 is arranged below the first support block 72, a second support block 74 is arranged below the guide post 73, the hydraulic cylinder 71 is fixedly connected with the third support plate 61, and the guide post 73 is matched with the guide hole 66.
The printing part 8 comprises a third supporting block 81, as shown in fig. 7, a clamping plate 82 is rotatably arranged on the third supporting block 81, a scraper 83 is obliquely arranged on the clamping plate 82, the clamping plate 82 is fixedly connected with the third supporting block 81 through a screw, and the third supporting block 81 is fixedly connected with the second supporting block 74.
When the device is used, a circuit board is fixed on the second supporting plate 27 by using bolts, the first threaded rod 24 and the second threaded rod 26 are rotated, the circuit board is adjusted to be positioned below the steel mesh 46, the first motor 31 is started to drive the screw rod 32 to rotate, the first sliding part 4 is driven to move downwards through the connecting block 33 in threaded fit with the screw rod 32, the steel mesh 46 presses the circuit board, solder paste is poured, the output shaft of the hydraulic cylinder 71 of the left third driving part 7 extends to drive the scraper 83 to press the steel mesh 46, the second motor 51 is started to drive the second sliding part 6, the third driving part 7 and the printing part 8 to move right, the scraper 83 prints the solder paste on the circuit board through the steel mesh 46, the output shaft of the hydraulic cylinder 71 returns, the first motor 31 drives the first sliding part 4 to move upwards to replace a circuit board to be printed, the operation is repeated, the output shaft of the hydraulic cylinder 71 on the right side of the third driving part 7 extends, the scraper 83 moves left to print the printing plate for the second time, the printing machine can adjust the position of the circuit board, the problems of printing deviation and inaccurate position caused by different specifications of the circuit board are solved, the printing quality and precision are improved, the printing machine is flexible and convenient, double printing parts are arranged, the circuit board does not need to return after single printing, the printing parts work alternately, the printing efficiency is improved, the steel net frame is convenient to disassemble, different printing work implementation operations are facilitated, the replacement time is shortened, and the working strength is reduced.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (9)
1. A circuit board solder paste printing machine comprises a fixing piece (1), and is characterized in that an adjusting piece (2) is arranged on the fixing piece (1), a first driving piece (3) is arranged on the fixing piece (1), a first sliding piece (4) is arranged on the fixing piece (1), a second driving piece (5) is arranged on the first sliding piece (4), a second sliding piece (6) is arranged on the first sliding piece (4), third driving pieces (7) which are symmetrically distributed are arranged on the second sliding piece (6), and a printing piece (8) is arranged below the third driving piece (7);
the adjusting part (2) comprises a first supporting plate (21), a first sliding block (211) is arranged below the first supporting plate (21), a first fixed block (22) is arranged below the first supporting plate (21), a first threaded hole (23) is formed in the first fixed block (22), a first threaded rod (24) is arranged in the first threaded hole (23) in a matched mode, a third sliding rail (25) is arranged above the first supporting plate (21), a second sliding block (251) is arranged on the third sliding rail (25), a second threaded rod (26) is arranged on the first supporting plate (21) in a rotating mode, a second supporting plate (27) is arranged on the second sliding block (251) in a sliding mode, second threaded holes (271) distributed in an array mode are formed in the second supporting plate (27), a second fixed block (28) is arranged below the second supporting plate (27), and a third threaded hole (29) is formed in the second fixed block (28);
the first sliding part (4) comprises a connecting plate (41), a fourth sliding rail (42) is arranged on the connecting plate (41), a supporting frame (43) is arranged on the connecting plate (41), a sliding groove (44) is formed in the supporting frame (43), a steel net rack (45) is arranged in the sliding groove (44), and a steel net (46) is arranged on the steel net rack (45).
2. A circuit board solder paste printer according to claim 1, characterized in that the fixing member (1) comprises a fixing base (11), a fixing frame (12) is arranged below the fixing base (11), a first slide rail (13) is arranged on the fixing base (11), a fixing plate (14) is arranged on the fixing base (11), a supporting column (15) is arranged on the fixing base (11), and a second slide rail (16) is arranged on the supporting column (15).
3. A machine as claimed in claim 2, characterised in that said third threaded hole (29) is in threaded engagement with a second threaded rod (26), said second threaded rod (26) being rotatably connected to said fixed plate (14), said first slider (211) being slidably connected to said first slide (13).
4. A circuit board solder paste printer according to claim 2, characterized in that the first driving member (3) comprises a first motor (31), an output shaft of the first motor (31) is fixedly connected with a lead screw (32), a connecting block (33) is arranged on the lead screw (32) in a threaded fit manner, the first motor (31) is fixedly connected with the supporting column (15), and the lead screw (32) is rotatably connected with the supporting column (15).
5. A circuit board solder paste printer according to claim 4, characterized in that the connecting plate (41) is provided with a first belt wheel (47) in a rotating manner, one side of the connecting plate (41) is provided with a third slider, the first slider (4) is in sliding connection with the fixed part (1) through the cooperation of the third slider and the second slide rail (16), the connecting block (33) is in fastening connection with the connecting plate (41), and the steel mesh frame (45) is in fastening connection with the supporting frame (43) through a screw rod.
6. A circuit board solder paste printer according to claim 5, characterized in that the second driving member (5) comprises a second motor (51), a second belt wheel (52) is tightly connected to the output shaft of the second motor (51), the second belt wheel (52) is connected with the first belt wheel (47) through a belt transmission, and the second motor (51) is tightly connected with the connecting plate (41).
7. A circuit board solder paste printer according to claim 1, characterized in that the second slider (6) comprises a third support plate (61), a fourth slider (62) is arranged on the third support plate (61), a locking block (63) is arranged on the third support plate (61), a fourth support plate (65) is arranged on the third support plate (61), a guide hole (66) is arranged on the fourth support plate (65), the second slider (6) is in sliding connection with the first slider (4) through the cooperation of the fourth slider (62) and the fourth slide rail (42), and the locking block (63) is in fastening connection with the belt.
8. A circuit board solder paste printer according to claim 7, characterized in that the third driving member (7) comprises a hydraulic cylinder (71), the output shaft of the hydraulic cylinder (71) is fixedly connected with a first supporting block (72) through the third supporting plate (61), a guiding column (73) is arranged below the first supporting block (72), a second supporting block (74) is arranged below the guiding column (73), the hydraulic cylinder (71) is fixedly connected with the third supporting plate (61), and the guiding column (73) is matched with the guiding hole (66).
9. The machine of claim 8, wherein the printing member (8) includes a third supporting block (81), a clamping plate (82) is rotatably disposed on the third supporting block (81), a scraper (83) is obliquely disposed on the clamping plate (82), the clamping plate (82) and the third supporting block (81) are fastened by screws, and the third supporting block (81) and the second supporting block (74) are fastened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480426.3A CN112616264A (en) | 2020-12-15 | 2020-12-15 | Circuit board tin cream printing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480426.3A CN112616264A (en) | 2020-12-15 | 2020-12-15 | Circuit board tin cream printing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112616264A true CN112616264A (en) | 2021-04-06 |
Family
ID=75239280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011480426.3A Pending CN112616264A (en) | 2020-12-15 | 2020-12-15 | Circuit board tin cream printing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112616264A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02123789A (en) * | 1988-11-02 | 1990-05-11 | Sanyo Electric Co Ltd | Method and device for positioning screen of screen printer |
| CN2271092Y (en) * | 1996-07-01 | 1997-12-17 | 陈东钦 | Cantilever and bidirectional displacement type circuit board press |
| US20120216690A1 (en) * | 2009-11-06 | 2012-08-30 | Panasonic Corporation | Mask for screen printing, screen printing device and screen printing method employing same |
| CN205951460U (en) * | 2016-08-26 | 2017-02-15 | 温州市正邦电子设备有限公司 | High -accuracy silk screen printing platform |
| CN207711567U (en) * | 2017-11-24 | 2018-08-10 | 江苏一驰电子科技有限公司 | A kind of stencil printer |
| CN112046134A (en) * | 2020-09-03 | 2020-12-08 | 深圳市海思科自动化技术有限公司 | Silk screen printing equipment for circuit board |
-
2020
- 2020-12-15 CN CN202011480426.3A patent/CN112616264A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02123789A (en) * | 1988-11-02 | 1990-05-11 | Sanyo Electric Co Ltd | Method and device for positioning screen of screen printer |
| CN2271092Y (en) * | 1996-07-01 | 1997-12-17 | 陈东钦 | Cantilever and bidirectional displacement type circuit board press |
| US20120216690A1 (en) * | 2009-11-06 | 2012-08-30 | Panasonic Corporation | Mask for screen printing, screen printing device and screen printing method employing same |
| CN205951460U (en) * | 2016-08-26 | 2017-02-15 | 温州市正邦电子设备有限公司 | High -accuracy silk screen printing platform |
| CN207711567U (en) * | 2017-11-24 | 2018-08-10 | 江苏一驰电子科技有限公司 | A kind of stencil printer |
| CN112046134A (en) * | 2020-09-03 | 2020-12-08 | 深圳市海思科自动化技术有限公司 | Silk screen printing equipment for circuit board |
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| PB01 | Publication | ||
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Application publication date: 20210406 |
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| RJ01 | Rejection of invention patent application after publication |