CN213889338U - Automatic edge grinding device for mechanical parts - Google Patents
Automatic edge grinding device for mechanical parts Download PDFInfo
- Publication number
- CN213889338U CN213889338U CN202022535667.5U CN202022535667U CN213889338U CN 213889338 U CN213889338 U CN 213889338U CN 202022535667 U CN202022535667 U CN 202022535667U CN 213889338 U CN213889338 U CN 213889338U
- Authority
- CN
- China
- Prior art keywords
- round pin
- casing
- motor
- fixedly connected
- grinding device
- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000005498 polishing Methods 0.000 abstract description 30
- 230000000694 effects Effects 0.000 description 6
- 238000007688 edging Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model discloses an automatic sanding limit device of machine parts aims at solving the staff and need rotate the accessory and just can guarantee other two sides of accessory and polish to can reduce grinding device's the quality of polishing and the problem of efficiency. The key points of the technical scheme are as follows: the utility model provides a machine parts's automatic dull polish limit device, including last casing and lower casing, the inside of casing is provided with drive arrangement and grinding device down, drive arrangement is used for driving grinding device and slides under the casing is inside, the last fixedly connected with backup pad of drive arrangement, grinding device sliding connection is in the backup pad, the internal fixedly connected with fixed plate of inferior valve, be provided with first motor on the fixed plate, the fixed plate symmetry sets up at drive arrangement's both ends, it has carousel and actuating lever to rotate on the fixed plate. The utility model discloses an automatic sanding limit device of machine parts can guarantee that every face of accessory is polished thoroughly, and it is even to polish, has improved the quality of product simultaneously.
Description
Technical Field
The utility model relates to a machinery equipment field of polishing, more specifically says that it relates to a machine parts's automatic dull polish limit device.
Background
Burr can remain usually when mechanical parts shaping, in mechanical parts course of working, in order to improve mechanical parts's quality and life, can polish mechanical parts's surface, and need get rid of the burr through grinding device, however traditional grinding device shakes greatly when work, grinding device is unstable in work not only, and can increase the error of mechanical parts man-hour, so not only harm grinding device, and can make the mechanical parts after polishing unqualified, seriously influence product quality, thereby mechanical parts's quality performance has been reduced.
To the above-mentioned problem, chinese patent that publication number is CN207953574U discloses an automatic dull polish limit device of machine parts, including the installation cover, the interior bottom fixedly connected with third driving motor of installation cover, the drive end of third driving motor is connected with the master gear through the third transmission shaft, the both sides of master gear all are equipped with the pinion rather than the meshing, one side of pinion all is equipped with the branch of fixed connection in the installation cover, the axle center cover of pinion is established on branch, one side that the master gear was kept away from to two pinions all is equipped with the rack with pinion engagement, one side fixedly connected with slider that the pinion was kept away from to the rack, one side that the rack was kept away from to the slider is equipped with the bracing piece, set up the bar spout that corresponds with the slider on the bracing piece.
The grinding device of above-mentioned scheme makes the abrasive brick can reciprocate through setting up gear and rack toothing to carry out automatic edging to machine parts, make the edging more even, the edging effect is better.
And foretell grinding device can realize moving about the accessory and polish for the both ends of accessory can be polished, but the staff can not make other two faces of accessory also can polish, makes the staff need rotate the accessory and just can guarantee other two faces of accessory and polish, thereby can reduce grinding device's the quality and the efficiency of polishing.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a machine parts's automatic sanding limit device, the rotation through the carousel can drive the rotation of actuating lever, and the actuating lever just can drive grinding device and slide in the backup pad for every face of accessory is polished thoroughly, and is polished evenly, thereby can improve product quality greatly.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a machine parts's automatic dull polish limit device, is including last casing and lower casing, the inside of casing is provided with drive arrangement and grinding device down, drive arrangement is used for driving grinding device and slides under the casing is inside, the last fixedly connected with backup pad of drive arrangement, grinding device sliding connection is in the backup pad, the internal fixedly connected with fixed plate of inferior valve, be provided with first motor on the fixed plate, the fixed plate symmetry sets up the both ends at drive arrangement, it is connected with carousel and actuating lever to rotate on the fixed plate, the output shaft of carousel and first motor, the first round pin of fixedly connected with on the carousel, grinding device is close to the one end fixedly connected with second round pin of fixed plate, the gliding first spout of first round pin of confession and second round pin is seted up to the inside of actuating lever.
By adopting the technical scheme, a large amount of burrs are formed on the outer surface of the accessory after the accessory is produced, the accessory is required to be polished at the moment, the quality of the accessory is improved, the accessory can be polished at the polishing device, meanwhile, a worker starts the driving device to drive the polishing device to move in the lower shell, at the moment, the polishing device can move up and down in the lower shell, so that the polishing device can polish two sides of the accessory, simultaneously, the worker can drive the first motor on the fixing plate to enable the turntable connected with the output shaft of the first motor to rotate on the fixing plate, the first round pin on the turntable can rotate along with the rotation of the turntable, the first round pin is tightly attached to the inner wall of the first sliding groove formed in the driving rod, and the driving rod can rotate on the fixing plate under the action of the driving force under the continuous rotation of the turntable, simultaneously, a second round pin on the grinding device is also tightly attached to the inner wall of the first sliding groove, so that the second round pin can slide in the first sliding groove, the grinding device can be driven to slide on the supporting plate in a reciprocating mode, all surfaces of accessories can be ground by the grinding device, the grinding efficiency of the grinding device is increased, the accessories can be guaranteed to be more uniform when being ground under the reciprocating movement of the grinding device, and the quality of the accessories is guaranteed.
The utility model discloses further set up to: the inner wall of the first sliding groove is rotatably connected with a plurality of first balls distributed in an array mode, and the first round pin and the second round pin are tightly attached to the inner wall of the first sliding groove.
Through adopting above-mentioned technical scheme, can make first ball on the first spout inner wall begin to roll when first round pin and second round pin slide in first spout to make the roll of first ball can increase the gliding efficiency of first round pin and second round pin in first spout.
The utility model discloses further set up to: the equal fixedly connected with stopper of one end that first round pin and second round pin stretch out first spout, the diameter of stopper is greater than the internal diameter of first spout.
Through adopting above-mentioned technical scheme, the diameter of the stopper on first round pin and the second round pin will be greater than the internal diameter of first spout for the stopper can prevent first round pin and the roll-off of second round pin in first spout when first round pin and second round pin slide in first spout, stability when increasing first round pin and second round pin and slide.
The utility model discloses further set up to: the grinding device comprises a second motor and a grinding block fixedly connected with the second motor through a rotating shaft, and a second sliding groove for the second motor to slide is formed in the supporting plate.
Through adopting above-mentioned technical scheme, the staff can drive the second motor and make the second motor drive the pivot and begin to rotate, and the rotation of pivot can drive the sanding block and begin to rotate, and pivoted sanding block can increase the efficiency of polishing of accessory, can make the second motor slide in the second spout of backup pad under the drive of carousel simultaneously, guarantees the round trip movement of grinding device in the backup pad, increases grinding device's removal efficiency.
The utility model discloses further set up to: the one end fixedly connected with fixed block that the second motor is close to the second spout inner wall, set up on the lateral wall of second spout and supply the gliding sliding tray of fixed block.
Through adopting above-mentioned technical scheme, when the second motor slided in the second spout, fixed block on the second motor can slide in the sliding tray that sets up on the second spout lateral wall to stability when can further increase the second motor and slide.
The utility model discloses further set up to: the inner wall of the sliding groove is rotatably connected with a plurality of second balls, and one end, close to the inner wall of the sliding groove, of the fixing block is tightly attached to the second balls.
Through adopting above-mentioned technical scheme, when the fixed block slided in the sliding tray, and the fixed block closely laminated with the second ball for can drive the second ball and begin to roll under the continuous slip of fixed block, thereby make the roll of second ball can increase the slip efficiency of fixed block.
The utility model discloses further set up to: the upper end of going up the casing is provided with the catch basin, the both sides of catch basin all are connected with the water pipe, the one end that the catch basin was kept away from to the water pipe runs through the casing and is connected with the shower nozzle, install the water pump on the water pipe.
Through adopting above-mentioned technical scheme, through the effect of water pump with the water intake pipe of catch basin to be connected with the shower nozzle on the water pipe, make the shower nozzle can with water spout to the accessory after polishing on, thereby reach the effect of getting rid of impurity on the accessory, make the accessory can further carry out the edging.
The utility model discloses further set up to: the one end sliding connection that goes up the casing and be close to lower casing has two clamp plates, two fixedly connected with telescopic link between the clamp plate, the outside cover of telescopic link is equipped with the spring.
Through adopting above-mentioned technical scheme, place the accessory between two clamp plates to the one end that will polish stretches out the clamp plate, makes the telescopic link can adjust according to the size of accessory, and the setting up of spring can place and play certain cushioning effect before two clamp plates to the accessory, places back between two clamp plates at the accessory and need fix two clamp plates together through the bolt, prevents that the accessory from dropping by oneself.
To sum up, the utility model discloses following beneficial effect has: the rotation through the carousel can drive the rotation of actuating lever, and the actuating lever just can drive grinding device and slide in the backup pad for every face of accessory is polished thoroughly, and is polished evenly, thereby can improve product quality greatly.
Drawings
Fig. 1 is a schematic structural view of an upper shell and a lower shell of the present invention;
fig. 2 is a schematic structural diagram of the turntable, the driving rod and the second motor of the present invention;
fig. 3 is a schematic structural view of the clamping plate of the present invention.
In the figure: 1. a lower housing; 2. an upper housing; 3. a water collecting tank; 4. a water pipe; 5. a water pump; 6. a spray head; 7. a drive device; 8. a second motor; 9. a rotating shaft; 10. grinding blocks; 11. a support plate; 12. a fixing plate; 13. a clamping plate; 14. a turntable; 15. a drive rod; 16. a first chute; 17. a first ball bearing; 18. a first round pin; 19. a second round pin; 20. a limiting block; 21. a telescopic rod; 22. a spring.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "set/connected", "connected", and the like are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in detail with reference to the accompanying drawings and examples.
An automatic edge grinding device for mechanical parts, referring to fig. 1 and 2, comprises an upper shell 2 and a lower shell 1, a driving device 7 and a grinding device are arranged inside the lower shell 1, the driving device 7 is used for driving the grinding device to slide inside the lower shell 1, a supporting plate 11 is welded on the driving device 7, the polishing device is connected on the supporting plate 11 in a sliding way, a fixed plate 12 is welded in the lower shell 1, a first motor is arranged on the fixed plate 12, the two fixing plates 12 are symmetrically arranged at two ends of the driving device 7, the two fixing plates 12 are both rotatably connected with a rotating disc 14 and a driving rod 15, the rotating disc 14 is connected with an output shaft of a first motor, a first round pin 18 is welded on the rotating disc 14, a second round pin 19 is welded at one end of the polishing device close to the fixing plates 12, a first slide groove 16 is formed in the drive lever 15 to allow the first round pin 18 and the second round pin 19 to slide.
The inner wall of the first sliding chute 16 is rotatably connected with a plurality of first balls 17 distributed in an array manner, the first round pins 18 and the second round pins 19 are tightly attached to the inner wall of the first sliding chute 16, and when the first round pins 18 and the second round pins 19 slide in the first sliding chute 16, the first balls 17 on the inner wall of the first sliding chute 16 can be prompted to start rolling, so that the rolling of the first balls 17 can increase the sliding efficiency of the first round pins 18 and the second round pins 19 in the first sliding chute 16; and the limiting blocks 20 are welded at the ends of the first round pin 18 and the second round pin 19 extending out of the first sliding groove 16, and the diameters of the limiting blocks 20 are larger than the inner diameter of the first sliding groove 16, so that the limiting blocks 20 can prevent the first round pin 18 and the second round pin 19 from sliding out of the first sliding groove 16 when the first round pin 18 and the second round pin 19 slide in the first sliding groove 16, and the stability of the first round pin 18 and the second round pin 19 during sliding can be improved.
The polishing device comprises a second motor 8 and a polishing block 10 welded with the second motor 8 through a rotating shaft 9, a second round pin 19 is welded on the second motor 8, the first motor and the second motor 8 are both servo motors, waterproof sleeves are sleeved on the outer sides of the first motor and the second motor 8 respectively, the waterproof sleeves are mature in the prior art, a second sliding groove for the second motor 8 to slide is formed in a supporting plate 11, a fixing block is welded at one end, close to the inner wall of the second sliding groove, of the second motor 8, a sliding groove for the fixing block to slide is formed in the side wall of the second sliding groove, a plurality of second balls are rotatably connected to the inner wall of the sliding groove, and one end, close to the inner wall of the sliding groove, of the fixing block is tightly attached to the second balls; be equipped with catch basin 3 in the upper end of last casing 2, water pipe 4 has all been welded to the both sides of catch basin 3, the one end that catch basin 3 was kept away from to water pipe 4 runs through casing 2 and welding has shower nozzle 6, the welding has water pump 5 on water pipe 4, in the effect of water pump 5 is with the water intake pipe 4 of catch basin 3, and shower nozzle 6 of connecting on water pipe 4 can be with water spray to the accessory after polishing, thereby reach the effect of getting rid of impurity on the accessory, make the accessory can further carry out the edging.
Referring to fig. 3, one end of the upper shell 2 close to the lower shell 1 is slidably connected with two clamping plates 13, an expansion link 21 is welded between the two clamping plates 13, a spring 22 is sleeved on the outer side of the expansion link 21, an accessory is placed between the two clamping plates 13, one end needing to be polished extends out of the clamping plates 13, the expansion link 21 can be adjusted according to the size of the accessory, the spring 22 is arranged to play a certain buffering role before the accessory is placed between the two clamping plates 13, the two clamping plates 13 can be fixed together through bolts after the accessory is placed between the two clamping plates 13, and the accessory is prevented from falling off automatically.
The working principle is as follows: the outer surface of the accessory has a large amount of burrs after the accessory is produced, the accessory needs to be polished at the moment, the quality of the accessory production is improved, the accessory can be polished at the polishing device, meanwhile, a worker starts the driving device 7, the driving device 7 can drive the polishing device to move in the lower shell 1, the polishing device can move up and down in the lower shell 1 at the moment, so that the polishing device can polish two sides of the accessory, the worker can drive the first motor on the fixing plate 12, the rotary plate 14 rotates on the fixing plate 12, the first round pin 18 on the rotary plate 14 can rotate along with the rotation of the rotary plate 14, the first round pin 18 is tightly attached to the inner wall of the first sliding groove 16 formed in the driving rod 15, and the driving rod 15 can rotate on the fixing plate 12 under the action of driving force under the continuous rotation of the rotary plate 14, simultaneously, a second round pin 19 on the polishing device is also tightly attached to the inner wall of the first sliding groove 16, so that the second round pin 19 can slide in the first sliding groove 16, the driving rod 15 continuously rotates, the polishing device can be driven to slide on the supporting plate 11 in a reciprocating mode, the other two surfaces of the accessory can be polished by the polishing device, the polishing efficiency of the polishing device is increased, the accessory can be guaranteed to be more uniform in a polishing mode under the reciprocating movement of the polishing device, and the quality of accessory output is guaranteed.
The worker can drive the second motor 8 to enable the rotating shaft 9 to start rotating, the rotating shaft 9 can drive the polishing block 10 to start rotating, the rotating polishing block 10 can be in contact with the surface of the accessory and further polish the accessory, and the second motor 8 can slide in a second sliding groove of the supporting plate 11 under the driving of the turntable 14 to drive the polishing device to move back and forth on the supporting plate 11, so that the moving efficiency of the polishing device is improved; and second motor 8 when sliding in the second spout, fixed block on the second motor 8 can slide in the sliding tray that sets up on the second spout lateral wall, stability when further increasing second motor 8 and sliding, the fixed block can closely laminate with the second ball on the sliding tray inner wall simultaneously, make and can drive the second ball and begin to roll under the continuous slip of fixed block, thereby make the roll of second ball can increase the slip efficiency of fixed block, and can increase second motor 8's slip efficiency.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides an automatic dull polish limit device of machine parts, is including last casing (2) and lower casing (1), the inside of casing (1) is provided with drive arrangement (7) and grinding device down, drive arrangement (7) are used for driving grinding device casing (1) inside slip its characterized in that down: fixedly connected with backup pad (11) on drive arrangement (7), grinding device sliding connection is on backup pad (11), fixedly connected with fixed plate (12) in lower casing (1), be provided with first motor on fixed plate (12), fixed plate (12) symmetry sets up the both ends in drive arrangement (7), it is connected with carousel (14) and actuating lever (15) to rotate on fixed plate (12), carousel (14) and the output shaft of first motor, first round pin (18) of fixedly connected with on carousel (14), grinding device is close to one end fixedly connected with second round pin (19) of fixed plate (12), confession first round pin (18) and the gliding first spout (16) of second round pin (19) have been seted up to the inside of actuating lever (15).
2. The automated burr grinding apparatus of a machine component of claim 1, wherein: the inner wall of the first sliding groove (16) is rotatably connected with a plurality of first balls (17) distributed in an array mode, and the first round pin (18) and the second round pin (19) are tightly attached to the inner wall of the first sliding groove (16).
3. The automated burr grinding apparatus of a machine component of claim 1, wherein: first round pin (18) and second round pin (19) stretch out equal fixedly connected with stopper (20) of one end of first spout (16), the diameter of stopper (20) is greater than the internal diameter of first spout (16).
4. The automated burr grinding apparatus of a machine component of claim 1, wherein: the grinding device comprises a second motor (8) and a grinding block (10) fixedly connected with the second motor (8) through a rotating shaft (9), and a second sliding groove for the second motor (8) to slide is formed in the supporting plate (11).
5. The automated burr grinding apparatus of a machine component of claim 4, wherein: one end of the second motor (8) close to the inner wall of the second sliding groove is fixedly connected with a fixed block, and a sliding groove for the fixed block to slide is formed in the side wall of the second sliding groove.
6. The automated burr grinding apparatus of a machine component of claim 5, wherein: the inner wall of the sliding groove is rotatably connected with a plurality of second balls, and one end, close to the inner wall of the sliding groove, of the fixing block is tightly attached to the second balls.
7. The automated burr grinding apparatus of a machine component of claim 1, wherein: go up the upper end of casing (2) and be provided with catch basin (3), the both sides of catch basin (3) all are connected with water pipe (4), the one end that catch basin (3) were kept away from in water pipe (4) runs through casing (2) and is connected with shower nozzle (6), install water pump (5) on water pipe (4).
8. The automated burr grinding apparatus of a machine component of claim 1, wherein: go up casing (2) and be close to one end sliding connection of casing (1) down have two clamp plates (13), two fixedly connected with telescopic link (21) between clamp plate (13), the outside cover of telescopic link (21) is equipped with spring (22).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202022535667.5U CN213889338U (en) | 2020-11-05 | 2020-11-05 | Automatic edge grinding device for mechanical parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202022535667.5U CN213889338U (en) | 2020-11-05 | 2020-11-05 | Automatic edge grinding device for mechanical parts |
Publications (1)
Publication Number | Publication Date |
---|---|
CN213889338U true CN213889338U (en) | 2021-08-06 |
Family
ID=77117432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202022535667.5U Expired - Fee Related CN213889338U (en) | 2020-11-05 | 2020-11-05 | Automatic edge grinding device for mechanical parts |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN213889338U (en) |
-
2020
- 2020-11-05 CN CN202022535667.5U patent/CN213889338U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107671723A (en) | A kind of automation sanding side device of mechanical fitting | |
CN215147548U (en) | Grinding device for wood working | |
CN213889338U (en) | Automatic edge grinding device for mechanical parts | |
CN111716170A (en) | Reciprocal polisher of round hole in gearbox | |
CN210650279U (en) | Burnishing device is used in emery wheel production | |
CN209477935U (en) | A kind of Full-automatic polishing machine head | |
CN213702754U (en) | Automatic grinding machine for inner and outer of round pipe | |
CN116252213A (en) | Grinding device and mechanical part machining equipment | |
CN210024844U (en) | Machine part polishing equipment | |
CN212578295U (en) | Abrasive belt polishing machine capable of polishing multiple surfaces of workpiece simultaneously | |
CN212706096U (en) | Burnishing device is used in alloy plate production | |
CN221337867U (en) | Fill electric pile casing burr cleaning device and fill electric pile casing burring device thereof | |
CN220217718U (en) | Cutter chamfering polisher | |
CN213319185U (en) | Grinding device for machining | |
CN217619546U (en) | Building wall flatness polishing equipment | |
CN216097968U (en) | Burr grinding device is used in ratchet production | |
CN220944426U (en) | Polishing device for multi-specification cutters | |
CN216759398U (en) | Tool equipment for removing welding slag | |
CN221065719U (en) | Inner groove grinding machine for machining bearing | |
CN113770910B (en) | Graded grinding device for processing automobile brake pads | |
CN219666028U (en) | Adjusting device of grinding polisher | |
CN213351822U (en) | Grinding device is used in automobile parts processing | |
CN217890500U (en) | A grinding device for production of rail vehicle brake block | |
CN218017775U (en) | Multi-rotating-arm polishing machine for rocket booster | |
CN219666072U (en) | Pulley deburring device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210806 |