CN113953619A - Capacitor tin immersion equipment and tin immersion process thereof - Google Patents
Capacitor tin immersion equipment and tin immersion process thereof Download PDFInfo
- Publication number
- CN113953619A CN113953619A CN202111137333.5A CN202111137333A CN113953619A CN 113953619 A CN113953619 A CN 113953619A CN 202111137333 A CN202111137333 A CN 202111137333A CN 113953619 A CN113953619 A CN 113953619A
- Authority
- CN
- China
- Prior art keywords
- tin immersion
- tin
- immersion
- platform
- scaling powder
- 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.)
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 238000007654 immersion Methods 0.000 title claims abstract description 68
- 239000003990 capacitor Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 21
- 230000004907 flux Effects 0.000 claims abstract description 17
- 238000005476 soldering Methods 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000009700 powder processing Methods 0.000 claims description 9
- 239000003651 drinking water Substances 0.000 claims description 6
- 235000020188 drinking water Nutrition 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000004043 dyeing Methods 0.000 abstract 1
- 238000007747 plating Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/08—Soldering by means of dipping in molten solder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/06—Solder feeding devices; Solder melting pans
- B23K3/0646—Solder baths
- B23K3/0669—Solder baths with dipping means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/04—Drying; Impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses a tin immersion method of capacitor tin immersion equipment, which comprises the following steps: filling the material into a mold, and then installing the mold into a tin immersion bracket; the platform carries the material to be subjected to tin immersion to move to the position above the soldering flux pool for tin immersion treatment, the material is lifted to the height of an original point after the soldering flux immersion is completed, then the material to be subjected to tin immersion is flatly loaded and moves to the position above the tin immersion pool, the equipment moves downwards to a set height according to a tin immersion program, the material enters pure tin melted at a high temperature, and after the tin immersion is completed, the processing material is moved to a discharging platform; and taking out the die subjected to tin immersion. The beneficial effects are that: during the in-service use, at first the mould is taken and is sent the scaling powder pond to carry out the scaling powder dip-dyeing, then send the mould that has dip-dyed to the dip-tin pond in carry out the dip-tin and handle, later rise and return to the district of unloading and carry out loading and unloading operation, whole process is high-efficient accurate, can be real with the actual production adaptation, change the manual work mode in the past, the quality obtains effectively improving.
Description
Technical Field
The invention belongs to the field of electronic element preparation, and particularly relates to capacitor tin immersion equipment and a tin immersion process thereof.
Background
In the traditional process of manufacturing the capacitor, single tin plating or manual tin plating is mostly adopted in the tin plating step, and the production efficiency is low in the manufacturing mode, so that the requirement on an electronic element cannot be met. Therefore, in recent years, capacitor manufacturers and equipment suppliers mainly pursue the research and development of processes and equipment related to batch tin plating. In the existing research, a crucible mold used in batch tinning inevitably uses a clamp for fixing a welded ceramic wafer and a lead wire together, so that the clamp used before and after tinning has a process of clamping and releasing the clamp, and the mold is troublesome and time-consuming to clean after tinning is finished.
The equipment pool of the tin immersion also has the problems, the capacitor needs to be soaked and coated with the soldering flux before being placed in the tin immersion pool, the existing soldering flux pool and the tin immersion pool are mostly not arranged in the same process, the loss is inevitable in the process, and the processing efficiency is reduced.
Disclosure of Invention
The invention aims to provide capacitor tin immersion equipment and a tin immersion process thereof, so that a traditional manual tin immersion capacitor can be processed at the equipment with higher quality and higher efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an electric capacity wicking equipment, includes the cabinet body and cabinet top, the cabinet top pass through the curb plate with cabinet body coupling, the cabinet body is equipped with wicking processing district, scaling powder processing district, the district of unloading and control operation panel, the downside on cabinet top is equipped with the mobile device, the mobile device linkage wicking support, the downside of wicking support is equipped with the mould, be equipped with electric capacity in the mould, wicking processing district is equipped with the tin bath, the tin bath both sides are equipped with the runner, scaling powder processing district is equipped with the scaling powder pond, scaling powder pond below is equipped with the collection liquid tank.
Further, the wicking processing district is including wicking pond, pivot, runner and drive chain, the both ends in wicking pond all are equipped with the pivot, the both ends of pivot are equipped with the runner, be equipped with on the runner drive chain, the last scraper blade that is equipped with of drive chain, the both ends of scraper blade are fixed in respectively on the chain of pivot both sides.
Further, scaling powder processing district includes scaling powder pond, unloading breach and header tank, the one corner in scaling powder pond is equipped with the unloading breach, the below of unloading breach is equipped with the header tank, be equipped with the filter screen in the header tank, the bottom of header tank is equipped with the delivery port, be equipped with the drinking-water pipe in the delivery port, the water pump is connected to the drinking-water pipe.
Further, the moving device comprises a sliding rail and a sliding block, a stand column is fixed on the sliding block, a platform is arranged at the bottom of the stand column, a lifting device is arranged at the bottom of the platform, a linkage tin immersion support of the lifting device is arranged, and the mold is fixed on the tin immersion support.
Furthermore, the wicking support comprises clamping plates and connecting plates, the clamping plates are arranged on two sides of the wicking support, the connecting plates are connected with the lifting device, the clamping plates are L-shaped clamping plates, the dies are rectangular dies with hollowed parts, the dies are inserted into the hollowed parts of the clamping plates and the connecting plates, and electromagnets are attached to the lower sides of the connecting plates.
Furthermore, a proximity sensor is arranged on the lower side of the connecting plate, the sensor is linked with the control operation plate, the control operation plate is linked with the lifting device, and the lifting device is an air cylinder or a hydraulic rod.
Furthermore, the side plate is a transparent support plate and is provided with reinforcing ribs, and the side plate is arranged on two sides of the bottom surface of the cabinet top.
Furthermore, the soldering flux processing area is also provided with a soldering flux filling device, the filling device comprises a limiting ring, a hanging bottle and an injection tube, the hanging bottle is arranged on the limiting ring, and the injection tube is connected with the hanging bottle.
The tin immersion method of the capacitor tin immersion equipment is characterized by comprising the following steps:
s1, loading the material into a mold, and then installing the mold into a tin immersion bracket;
s2, pressing a return button, and moving the platform carrying the material to be subjected to tin immersion to the position above the soldering flux pool;
s3, pressing a start button, enabling the platform to carry the material to be subjected to tin immersion to move downwards to a set height, lifting the material to the height of an original point after the material is subjected to soldering flux immersion, then enabling the platform to carry the material to be subjected to tin immersion to move to the position above a tin immersion pool, enabling the equipment to move downwards to the set height according to a tin immersion program, enabling the material to enter high-temperature molten pure tin, lifting the platform to the height of the original point again after tin immersion is completed, and then horizontally moving the platform to a discharging platform;
and S4, taking out the die for completing tin immersion.
The invention has the beneficial effects that: compared with the traditional manual tin plating method, the equipment concentrates all capacitors on the mould when in use, the mould can be a flat mould with a conventional structure, the two ends of the mould are inserted in the L-shaped clamping plate, the magnet of the upper side connecting plate can adsorb pins of the capacitors when being electrified, so that the capacitors cannot fall off and the like.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic view of the tin immersion apparatus of the present invention.
The labels in the figure are: 1-cabinet body, 2-cabinet top, 3-tin immersion processing area, 4-soldering flux processing area, 5-unloading area, 6-control operation panel, 7-tin immersion bracket, 8-moving device and 9-lifting device.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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 following embodiments are provided as specific examples of specific applications of the present disclosure, and refer to fig. 1-2 and the following embodiments in detail.
The utility model discloses a shown electric capacity wicking equipment, including the cabinet body 1 and cabinet top 2, cabinet top 2 is connected with cabinet body 1 through the curb plate, cabinet body 1 is equipped with wicking processing district 3, scaling powder processing district 4, district 5 and the control operation board 6 of unloading, wicking processing district 3 is used for carrying out the wicking processing to the electric capacity product, the downside of cabinet top 2 is equipped with mobile device 8, mobile device 8 linkage wicking support 7, the downside of wicking support 7 is equipped with the mould, the mould adopts conventional metal mold, be equipped with the electric capacity in the mould, wicking processing district 3 is equipped with the tin bath, the tin bath both sides are equipped with the runner, scaling powder processing district 4 is equipped with the scaling powder pond, scaling powder pond below is equipped with the collecting tank, this part structure is the major structure of wicking equipment.
Scaling powder processing district 4 includes the scaling powder pond, unloading breach and header tank, the one corner in scaling powder pond is equipped with the unloading breach, the below of unloading breach is equipped with the header tank, be equipped with the filter screen in the header tank, the bottom of header tank is equipped with the delivery port, be equipped with the drinking-water pipe in the delivery port, the drinking-water union coupling water pump, different from traditional scaling powder pond, need use complicated scheme to carry out survey control to the scaling powder, the transfusion bottle of fixed setting on the support frame carries out the scaling powder to the scaling powder pond constantly and replenishes, excessive scaling powder can be along breach department trickles downwards, the scaling powder that spills over can be followed drain pipe department and concentrated in flowing to the water tank, the scaling powder in the water tank can add again in the transfusion bottle, accomplish systematic circulation.
The moving device 8 comprises a sliding rail and a sliding block, a vertical column is fixed on the sliding block, a platform is arranged at the bottom of the vertical column, a lifting device 9 is arranged on the lower bottom of the platform, a linkage tin immersion support 7 of the lifting device 9 is arranged, and the die is fixed on the tin immersion support 7.
The wicking support 7 includes cardboard and the connecting plate of both sides, and the connecting plate is connected with elevating gear 9, and the cardboard is "L" type cardboard, and the mould is for being equipped with the cuboid mould of fretwork, and the mould is inserted and is located the fretwork department of cardboard and connecting plate, and the electro-magnet is established in the downside subsides of connecting plate.
The lower side of the connecting plate is provided with a proximity sensor which controls the operating plate 6 in a linkage manner, the operating plate 6 is controlled to be in linkage with the lifting device 9, and the lifting device 9 is an air cylinder or a hydraulic rod.
The side plates are transparent supporting plates and are provided with reinforcing ribs, and the side plates are arranged on two sides of the bottom surface of the cabinet top 2.
The soldering flux processing area 4 is also provided with a soldering flux filling device, the filling device comprises a limiting ring, a hanging bottle and an injection tube, the hanging bottle is arranged on the limiting ring, and the injection tube is connected with the hanging bottle.
The tin immersion method of the capacitance tin immersion equipment comprises the following steps:
s1, loading the material into a mold, and then installing the mold into a tin immersion bracket 7;
s2, pressing a return button, and moving the platform carrying the material to be subjected to tin immersion to the position above the soldering flux pool;
s3, pressing a start button, enabling the platform to carry the material to be subjected to tin immersion to move downwards to a set height, lifting the material to the height of an original point after the material is subjected to soldering flux immersion, then enabling the platform to carry the material to be subjected to tin immersion to move to the position above a tin immersion pool, enabling the equipment to move downwards to the set height according to a tin immersion program, enabling the material to enter high-temperature molten pure tin, lifting the platform to the height of the original point again after tin immersion is completed, and then horizontally moving the platform to a discharging platform;
and S4, taking out the die for completing tin immersion.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
It is to be understood that the above-described embodiments are only some examples of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Claims (9)
1. A capacitor tin immersion equipment is characterized in that: including the cabinet body (1) and cabinet top (2), cabinet top (2) through the curb plate with the cabinet body (1) is connected, the cabinet body (1) is equipped with tin immersion processing district (3), scaling powder processing district (4), unloads district (5) and control operation panel (6), the downside of cabinet top (2) is equipped with mobile device (8), mobile device (8) linkage tin immersion support (7), the downside of tin immersion support (7) is equipped with the mould, be equipped with the electric capacity in the mould, tin immersion processing district (3) is equipped with the tin bath, the tin bath both sides are equipped with the runner, scaling powder processing district (4) is equipped with the scaling powder pond, the scaling powder pond below is equipped with the collecting tank.
2. The capacitive wicking apparatus of claim 1, wherein: wicking processing district (3) is including wicking pond, pivot, runner and drive chain, the both ends in wicking pond all are equipped with the pivot, the both ends of pivot are equipped with the runner, be equipped with on the runner drive chain, the last scraper blade that is equipped with of drive chain, the both ends of scraper blade are fixed in respectively on the chain of pivot both sides.
3. The capacitive wicking apparatus of claim 2, wherein: scaling powder processing district (4) includes scaling powder pond, unloading breach and header tank, the one corner in scaling powder pond is equipped with the unloading breach, the below of unloading breach is equipped with the header tank, be equipped with the filter screen in the header tank, the bottom of header tank is equipped with the delivery port, be equipped with the drinking-water pipe in the delivery port, the water pump is connected to the drinking-water pipe.
4. The capacitive wicking apparatus of claim 3, wherein: the moving device (8) comprises a sliding rail and a sliding block, an upright is fixed on the sliding block, a platform is arranged at the bottom of the upright, a lifting device (9) is arranged at the bottom of the platform, a linkage tin immersion support (7) of the lifting device (9) is arranged, and the mold is fixed on the tin immersion support (7).
5. The capacitive wicking apparatus of claim 4, wherein: the tin immersion support (7) comprises clamping plates and connecting plates, the clamping plates and the connecting plates are arranged on two sides of the tin immersion support, the connecting plates are connected with the lifting device (9), the clamping plates are L-shaped clamping plates, the dies are rectangular dies with hollowed parts, the dies are inserted into the hollowed parts of the clamping plates and the connecting plates, and electromagnets are attached to the lower sides of the connecting plates.
6. The capacitive wicking apparatus of claim 5, wherein: a proximity sensor is arranged on the lower side of the connecting plate, the sensor is linked with the control operation plate (6), the control operation plate (6) is linked with the lifting device (9), and the lifting device (9) is an air cylinder or a hydraulic rod.
7. The capacitive wicking apparatus of claim 6, wherein: the side plates are transparent supporting plates and are provided with reinforcing ribs, and the side plates are arranged on two sides of the bottom surface of the cabinet top (2).
8. The capacitive wicking apparatus of claim 7, wherein: the soldering flux processing area (4) is further provided with a soldering flux filling device, the filling device comprises a limiting ring, a hanging bottle and an injection tube, the hanging bottle is arranged on the limiting ring, and the injection tube is connected with the hanging bottle.
9. The tin immersion method of the capacitor tin immersion equipment as claimed in claim 1, wherein:
s1, filling the material into a mold, and then installing the mold into a tin immersion bracket (7);
s2, pressing a return button, and moving the platform carrying the material to be subjected to tin immersion to the position above the soldering flux pool;
s3, pressing a start button, enabling the platform to carry the material to be subjected to tin immersion to move downwards to a set height, lifting the material to the height of an original point after the material is subjected to soldering flux immersion, then enabling the platform to carry the material to be subjected to tin immersion to move to the position above a tin immersion pool, enabling the equipment to move downwards to the set height according to a tin immersion program, enabling the material to enter high-temperature molten pure tin, lifting the platform to the height of the original point again after tin immersion is completed, and then horizontally moving the platform to a discharging platform;
and S4, taking out the die for completing tin immersion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111137333.5A CN113953619A (en) | 2021-09-27 | 2021-09-27 | Capacitor tin immersion equipment and tin immersion process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111137333.5A CN113953619A (en) | 2021-09-27 | 2021-09-27 | Capacitor tin immersion equipment and tin immersion process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113953619A true CN113953619A (en) | 2022-01-21 |
Family
ID=79462370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111137333.5A Pending CN113953619A (en) | 2021-09-27 | 2021-09-27 | Capacitor tin immersion equipment and tin immersion process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113953619A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110006105A1 (en) * | 2002-12-17 | 2011-01-13 | Abb Technology Ltd. | Power capacitor |
| CN204927065U (en) * | 2015-09-07 | 2015-12-30 | 海宁艾迪欧动物保健品科技有限公司 | Condenser high efficiency clamping device |
| CN205183996U (en) * | 2015-11-26 | 2016-04-27 | 肇庆三雄极光照明有限公司 | Automatic tin dipping machine of magnetic ring |
| CN105919810A (en) * | 2016-05-05 | 2016-09-07 | 万潇熠 | Novel dropping pill sampling detection device |
| CN209175074U (en) * | 2018-11-29 | 2019-07-30 | 深圳市大强大电子技术有限公司 | A kind of electric capacity module tin immersion furnace assembly mold |
| CN111029174A (en) * | 2019-11-25 | 2020-04-17 | 安徽锐光电子科技有限公司 | Vacuum oil immersion device for capacitor production and working method thereof |
| CN210755705U (en) * | 2019-10-25 | 2020-06-16 | 福建火炬电子科技股份有限公司 | Two-sided subsides dress multicore group ceramic capacitor welding jig |
-
2021
- 2021-09-27 CN CN202111137333.5A patent/CN113953619A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110006105A1 (en) * | 2002-12-17 | 2011-01-13 | Abb Technology Ltd. | Power capacitor |
| CN204927065U (en) * | 2015-09-07 | 2015-12-30 | 海宁艾迪欧动物保健品科技有限公司 | Condenser high efficiency clamping device |
| CN205183996U (en) * | 2015-11-26 | 2016-04-27 | 肇庆三雄极光照明有限公司 | Automatic tin dipping machine of magnetic ring |
| CN105919810A (en) * | 2016-05-05 | 2016-09-07 | 万潇熠 | Novel dropping pill sampling detection device |
| CN209175074U (en) * | 2018-11-29 | 2019-07-30 | 深圳市大强大电子技术有限公司 | A kind of electric capacity module tin immersion furnace assembly mold |
| CN210755705U (en) * | 2019-10-25 | 2020-06-16 | 福建火炬电子科技股份有限公司 | Two-sided subsides dress multicore group ceramic capacitor welding jig |
| CN111029174A (en) * | 2019-11-25 | 2020-04-17 | 安徽锐光电子科技有限公司 | Vacuum oil immersion device for capacitor production and working method thereof |
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| PB01 | Publication | ||
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Application publication date: 20220121 |