CN212900868U - Vacuum oiling device for track pin shaft - Google Patents
Vacuum oiling device for track pin shaft Download PDFInfo
- Publication number
- CN212900868U CN212900868U CN202021257158.4U CN202021257158U CN212900868U CN 212900868 U CN212900868 U CN 212900868U CN 202021257158 U CN202021257158 U CN 202021257158U CN 212900868 U CN212900868 U CN 212900868U
- Authority
- CN
- China
- Prior art keywords
- base
- transverse moving
- vacuum
- rack
- oiling
- 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
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 32
- 238000003754 machining Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model provides a track round pin axle vacuum oiling device, including the frame, set up in the material feeding unit of frame bottom, set up in the frame and be located the clamping mechanism of material feeding unit top and set up in the vacuum oiling device of frame one side, clamping mechanism includes that slidable mounting is in the frame on the lateral shifting base, slidable mounting is in the longitudinal movement base on the lateral shifting base, install in the clamp splice mechanism on lateral shifting base top. Utilize the utility model discloses a track round pin axle vacuum oiling device of technical scheme preparation carries track chain through material feeding unit, further clamp tightly is carried out to the work piece through clamping mechanism and clamp splice mechanism, carry out automatic oiling through vacuum oiling device, degree of automation is high on the whole, workman's intensity of labour has been reduced, the effect and the efficiency of oiling have been improved, lateral shifting base and longitudinal movement base all can be adjusted simultaneously, the adaptability of integrated device to different model work pieces has been improved, the scope of processing has been widened.
Description
Technical Field
The utility model belongs to the technical field of the oiling device, especially, relate to a track round pin axle vacuum oiling device.
Background
In the production of present society, after the pressure equipment of track chain is accomplished, need pour into lubricating oil into in the round pin axle of chain joint department, improve the result of use and the life of track, at the in-process of oiling, it is especially important to the location of chain position, in case the position of chain joint takes place to remove, the leakproofness of oiling just is difficult to guarantee, there is direct influence to the effect of oiling, however, traditional oiling technology needs the manual oiling of operator, the leakproofness is poor, the oiling effect is unsatisfactory, simultaneously inefficiency, workman's intensity of labour is also very big.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem, a track round pin axle vacuum oiling device has been designed.
According to the technical scheme, the utility model provides a, a track round pin axle vacuum oiling device, including the frame, set up in the material feeding unit of frame bottom, set up in the frame and be located the clamping mechanism of material feeding unit top and set up in the vacuum oiling device of frame one side, clamping mechanism includes lateral shifting base, the longitudinal movement base of slidable mounting on the lateral shifting base in the frame, installs in the clamp splice mechanism on lateral shifting base top of slidable mounting.
The automatic feeding device is characterized in that a transverse moving guide rail is arranged on the rack, a transverse moving screw rod is erected on one side of the rack, a transverse moving hand wheel is connected to one end of the transverse moving screw rod, a transverse moving plate is fixed on the transverse moving base, and the transverse moving plate is sleeved on the transverse moving screw rod.
The clamping block mechanism is formed by a guide shaft arranged on the transverse moving base, a clamping block cylinder arranged on the top surface of the transverse moving base and a clamping block which is connected with the telescopic end of the clamping block cylinder and sleeved on the guide shaft.
The longitudinal movement base is U-shaped and is slidably mounted in the transverse movement base, a groove matched with the guide shaft and the clamping block is formed in the longitudinal movement base, a longitudinal movement screw rod and a longitudinal movement shaft are arranged between the bottom of the longitudinal movement base and the transverse movement base in a penetrating mode, and a longitudinal movement hand wheel is connected to one end of the longitudinal movement screw rod.
The feeding device comprises a feeding motor arranged at the bottom of the rack, a feeding screw rod connected with the output end of the feeding motor, and a feeding base which is slidably mounted at the bottom of the rack and connected with the feeding screw rod.
The automatic feeding device is characterized in that guide plates are slidably mounted on two opposite side walls in the feeding base, a machining table top is fixed at the top end of each guide plate, a lifting cylinder is mounted at the bottom of the feeding base, the telescopic end of each lifting cylinder is connected with the bottom surface of the machining table top, a plurality of groups of positioning cylinders are symmetrically arranged on two sides of the machining table top, and clamping plates are arranged at the telescopic ends of the positioning cylinders.
The vacuum oiling device comprises an oiling pump, a vacuum pump and a sealing cylinder, wherein the oiling pump, the vacuum pump and the sealing cylinder are arranged on the side of the rack, an oiling plate is arranged at the same side position on the rack in a sliding mode, the telescopic end of the sealing cylinder is connected with the oiling plate, and an oiling pipe and a sealing top block are arranged on the oiling plate in a penetrating mode.
One end of the oil filling pipe is connected with the oil filling pump and the vacuum pump, an oil filling nozzle is installed at the other end of the oil filling pipe, and a vacuum sensor and an electromagnetic valve are installed on the oil filling pipe.
A vibrating disc is arranged on one side of the oil injection pump on the machine frame, and a rubber plug moving mechanism is arranged at the discharging end of the vibrating disc.
The rubber plug moving mechanism comprises a rubber plug moving cylinder fixedly mounted on the transverse moving base and a pneumatic clamping jaw connected with the telescopic end of the rubber plug moving cylinder and slidably mounted on the transverse moving base.
Utilize the utility model discloses a track round pin axle vacuum oiling device of technical scheme preparation, treat the track chain of processing through material feeding unit and carry, further clamp is advanced to the work piece through clamping mechanism and clamp splice mechanism and is pressed from both sides tightly, carry out automatic oiling through vacuum oiling device, degree of automation is high on the whole, workman's intensity of labour has been reduced, the effect and the efficiency of oiling have been improved, lateral shifting base and longitudinal movement base all can be adjusted simultaneously, the adaptability of integrated device to different model work pieces has been improved, the scope of processing has been widened.
Drawings
FIG. 1 is a perspective view of the overall structure;
FIG. 2 is a front view of the overall structure;
FIG. 3 is a side view of the overall structure;
FIG. 4 is a schematic view of the mounting structure of the longitudinal moving base and the transverse moving base;
FIG. 5 is a schematic view of the mounting structure of the guide plate and the processing table;
fig. 6 is a schematic structural diagram of the vacuum oiling device.
In the figure: 1. a frame; 2. transversely moving the base; 3. longitudinally moving the base; 4. a lateral movement guide rail; 5. transversely moving the screw rod; 6. transversely moving the hand wheel; 7. transversely moving the plate; 8. a guide shaft; 9. a clamp block cylinder; 10. a clamping block; 11. grooving; 12. longitudinally moving the screw rod; 13. a longitudinal movement axis; 14. longitudinally moving the hand wheel; 15. a feeding motor; 16. a feeding screw rod; 17. a feeding base; 18. a guide plate; 19. Processing a table top; 20. a lifting cylinder; 21. positioning the air cylinder; 22. a splint; 23. an oil injection pump; 24. a vacuum pump; 25. sealing the cylinder; 26. an oil injection plate; 27. an oil filling pipe; 28. sealing the top block; 29. an oil injection nozzle; 30. a vacuum sensor; 31. an electromagnetic valve; 32. a vibrating pan; 33. a rubber plug moving cylinder; 34. pneumatic clamping jaw
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, as shown in fig. 1, 2, 3, and 4, a vacuum oiling device for a track pin comprises a frame 1, a feeding device disposed at the bottom of the frame 1, a clamping mechanism disposed on the frame 1 and above the feeding device, and a vacuum oiling device disposed at one side of the frame 1, wherein the clamping mechanism comprises a lateral moving base 2 slidably mounted on the frame 1, a longitudinal moving base 2 slidably mounted on the lateral moving base 2, and a clamping block 10 mechanism mounted at the top end of the lateral moving base 2, a lateral moving guide rail 4 is disposed on the frame 1, a lateral moving screw 5 is mounted on one side of the frame 1, a lateral moving hand wheel 6 is connected to one end of the lateral moving screw 5, a lateral moving plate 7 is fixed on the lateral moving base 2, the transverse moving plate 7 is sleeved on the transverse moving screw rod 5.
The utility model discloses in, lateral shifting base 2 can carry out lateral shifting for frame 1, and the principle of its removal is: an operator manually rotates the transverse moving hand wheel 6 to drive the transverse moving screw rod 5 to rotate, and the transverse moving plate 7 is fixed on the transverse moving base 2, and meanwhile, the transverse moving plate 7 is sleeved on the transverse moving screw rod 5 through thread matching, so that the transverse moving plate 7 can be pushed to move when the transverse moving screw rod 5 rotates, and the transverse moving base 2 is driven to slide along the transverse moving guide rail 4 on the rack 1.
The clamp splice 10 mechanism is by setting up guiding axle 8 on the lateral shifting base 2, install clamp splice 10 cylinder 9 on the top surface of lateral shifting base 2, connect locate clamp splice 10 cylinder 9 flexible end and cover establish the clamp splice 10 on guiding axle 8 and constitute jointly, longitudinal movement base 2 is U type and slidable mounting in lateral shifting base 2, set up on the longitudinal movement base 2 with guiding axle 8 and clamp splice 10 matched with fluting 11, wear to be equipped with longitudinal movement lead screw 12 and longitudinal movement axle 13 between the bottom of longitudinal movement base 2 and the lateral shifting base 2, the termination of longitudinal movement lead screw 12 is equipped with longitudinal movement hand wheel 14.
The longitudinal moving base 2 can slide longitudinally relative to the transverse moving base 2, and the sliding principle is as follows: an operator manually rotates the longitudinal moving hand wheel 14 to drive the longitudinal moving screw rod 12 to rotate, and because one end of the longitudinal moving screw rod 12 is rotatably installed on the transverse moving base 2, and one side of the bottom of the longitudinal moving base 2 is sleeved on the longitudinal moving screw rod 12 through threaded matching, when the longitudinal moving screw rod 12 rotates, the longitudinal moving base 2 can be pushed to slide relative to the transverse moving base 2.
Feeding unit is including setting up in the pay-off motor 15 of frame 1 bottom, connecing the pay-off lead screw 16, the slidable mounting of locating the 15 output of pay-off motor in frame 1 bottom and connecing the pay-off base 17 of establishing on pay-off lead screw 16, slidable mounting has deflector 18 on the double-phase relative lateral wall in the pay-off base 17, the top of deflector 18 is fixed with processing mesa 19, lift cylinder 20 is installed to the bottom of pay-off base 17, lift cylinder 20's flexible end meets with the bottom surface of processing mesa 19, the bilateral symmetry formula of processing mesa 19 is provided with a plurality of groups location cylinder 21, the flexible end of location cylinder 21 is provided with splint 22.
The feeding screw rod 16 is erected at the bottom of the frame 1, meanwhile, the frame 1 is provided with a feeding motor 15 to drive the feeding screw rod 16 to rotate, the feeding base 17 is slidably arranged at the bottom of the frame 1 and is sleeved on the feeding screw rod 16 through thread fit, therefore, when the feeding motor 15 rotates to drive the feeding screw rod 16 to rotate, the feeding base 17 can be pushed to slide relative to the frame 1, and because guide plates 18 are slidably arranged at two sides in the feeding base 17, a processing table top 19 is fixed at the top end of each guide plate 18, a lifting cylinder 20 is arranged at the bottom in the feeding base 17, and the telescopic end of each lifting cylinder 20 is connected with the bottom of the processing table top 19, therefore, the guide plates 18 can be lifted in the feeding base 17 by the telescopic action of the lifting cylinders 20, the height of a workpiece to be processed is changed, and meanwhile, a plurality of groups of positioning cylinders 21 are arranged, wherein every group location cylinder 21 sets up relatively to every location cylinder 21's flexible end is provided with splint 22, therefore location cylinder 21 can drive splint 22 and press from both sides tightly the work piece from the both sides of work piece.
As shown in fig. 1, 2, 3 and 6, the vacuum oiling device comprises an oiling pump 23, a vacuum pump 24 and a sealing cylinder 25 which are arranged at the side of the frame 1, an oil injection plate 26 is also slidably mounted at the same side position on the frame 1, the telescopic end of the sealing cylinder 25 is connected with the oil injection plate 26, an oil filling pipe 27 and a sealing top block 28 are arranged on the oil filling plate 26 in a penetrating way, one end of the oil filling pipe 27 is connected with the oil filling pump 23 and the vacuum pump 24, an oil nozzle 29 is installed on the other end of the oil filling pipe 27, a vacuum sensor 30 and a solenoid valve 31 are installed on the oil filling pipe 27, a vibrating disk 32 is arranged at one side of the oil injection pump 23 on the frame 1, a rubber plug moving mechanism is arranged at the blanking end of the vibrating disk 32, the rubber plug moving mechanism comprises a rubber plug moving cylinder 33 fixedly mounted on the transverse moving base 2 and a pneumatic clamping jaw 34 connected with the telescopic end of the rubber plug moving cylinder 33 and slidably mounted on the transverse moving base 2.
Vacuum oiling device is used for carrying out vacuum oiling to the round pin axle of track chain, after the work piece removed suitable position, seal cylinder 25 work, drive the motion of oiling board 26, make oiling mouth 29 top at the oiling end of round pin axle of oiling board 26 upper feeding oil pipe 27 front end, can realize the section is sealed, vacuum pump 24 begins work afterwards, to the inside evacuation of round pin axle, vacuum sensor 30 can detect the vacuum degree in the round pin axle at this in-process, after the vacuum degree reachs the default, solenoid valve 31 work, it is oiling pump 23 that oiling pipe 27 switches on, oiling pump 23 is to the inside oiling of round pin axle, after the oiling is accomplished, seal cylinder 25 shrink, it rolls back to drive oiling board 26.
When the vacuum oil injection device works, an operator places a rubber plug at a feeding hole of the vibration disc 32, the vibration disc carries out feeding of the rubber plug, after the rubber plug reaches a discharging hole of the vibration disc 32, the pneumatic clamping jaws 34 clamp the rubber plug, and when the oil injection plate 26 returns, the rubber plug moving cylinder 33 extends to push the pneumatic clamping jaws 34 to move to a position corresponding to the top sealing block 28 on the oil injection plate 26 to prepare for rubber plug installation.
To sum up, the utility model discloses an overall work flow does: firstly, an operator adjusts a transverse moving base 2 and a longitudinal moving base 2 to proper positions through a transverse moving hand wheel 6 and a longitudinal moving hand wheel 14, then the operator places chains to be processed on a processing table top 19 and places rubber plugs on a vibrating disc 32 respectively, the vibrating disc 32 conveys the rubber plugs to the blanking position of the vibrating disc 32, a positioning cylinder 21 on the processing table top 19 clamps workpieces from two sides in a working mode, a lifting cylinder 20 works to drive the processing table top 19 to ascend to a processing station, then a sealing cylinder 25 pushes an oil injection plate 26 to be close to the workpieces, a pin shaft is vacuumized through a vacuum pump 24, grease is injected through an oil injection pump 23, then the sealing cylinder 25 recovers, meanwhile, a pneumatic clamping jaw 34 clamps the rubber plugs, the rubber plug moving cylinder 33 drives the pneumatic clamping jaw 34 to move to a position corresponding to a sealing top block 28 on the oil injection plate 26, then the feeding motor 15 moves to make the feeding base 17 move, the pin shaft which has just been injected with oil moves to the position corresponding to the rubber plug, meanwhile, the next pin shaft without oil injection moves to the position corresponding to the oil injection nozzle 29, then the sealing cylinder 25 extends, the sealing top block 28 pushes against the rubber plug to seal the pin shaft, and simultaneously the oil injection nozzle 29 vacuumizes and injects oil to the next pin shaft.
Utilize the utility model discloses a track round pin axle vacuum oiling device of technical scheme preparation, treat the track chain of processing through material feeding unit and carry, further clamp is advanced to the work piece through clamping mechanism and clamp splice mechanism and is pressed from both sides tightly, carry out automatic oiling through vacuum oiling device, degree of automation is high on the whole, workman's intensity of labour has been reduced, the effect and the efficiency of oiling have been improved, lateral shifting base and longitudinal movement base all can be adjusted simultaneously, the adaptability of integrated device to different model work pieces has been improved, the scope of processing has been widened.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (10)
1. The utility model provides a track round pin axle vacuum oiling device which characterized in that: the device comprises a rack (1), a feeding device arranged at the bottom of the rack (1), a clamping mechanism arranged on the rack (1) and positioned above the feeding device, and a vacuum oil injection device arranged on one side of the rack (1), wherein the clamping mechanism comprises a transverse moving base (2) slidably mounted on the rack (1), a longitudinal moving base (3) slidably mounted on the transverse moving base (2), and a clamping block mechanism mounted at the top end of the transverse moving base (2).
2. The vacuum oiling device for the track pin shaft according to claim 1, wherein a transverse moving guide rail (4) is arranged on the rack (1), a transverse moving screw rod (5) is erected on one side of the rack (1), a transverse moving hand wheel (6) is connected to one end of the transverse moving screw rod (5), a transverse moving plate (7) is fixed on the transverse moving base (2), and the transverse moving plate (7) is sleeved on the transverse moving screw rod (5).
3. The track pin vacuum oiling device of claim 1, which is characterized in that: the clamping block mechanism is formed by a guide shaft (8) arranged on the transverse moving base (2), a clamping block cylinder (9) arranged on the top surface of the transverse moving base (2) and a clamping block (10) which is connected with the telescopic end of the clamping block cylinder (9) and sleeved on the guide shaft (8) together.
4. The vacuum oiling device for the track pin shaft according to claim 1, wherein the longitudinal moving base (3) is U-shaped and is slidably mounted in the transverse moving base (2), a slot (11) matched with the guide shaft (8) and the clamping block (10) is formed in the longitudinal moving base (3), a longitudinal moving screw rod (12) and a longitudinal moving shaft (13) are arranged between the bottom of the longitudinal moving base (3) and the transverse moving base (2) in a penetrating manner, and a longitudinal moving hand wheel (14) is connected to one end of the longitudinal moving screw rod (12).
5. The track pin vacuum oiling device of claim 1, which is characterized in that: the feeding device comprises a feeding motor (15) arranged at the bottom of the rack (1), a feeding screw rod (16) connected to the output end of the feeding motor (15), and a feeding base (17) slidably mounted at the bottom of the rack (1) and connected to the feeding screw rod (16).
6. The track pin vacuum oiling device of claim 5, wherein: the automatic feeding device is characterized in that guide plates (18) are slidably mounted on two opposite side walls in the feeding base (17), a processing table board (19) is fixed at the top end of each guide plate (18), a lifting cylinder (20) is mounted at the bottom of the feeding base (17), the telescopic end of each lifting cylinder (20) is connected with the bottom surface of the processing table board (19), a plurality of groups of positioning cylinders (21) are symmetrically arranged on two sides of the processing table board (19), and clamping plates (22) are arranged at the telescopic ends of the positioning cylinders (21).
7. The track pin vacuum oiling device of claim 1, which is characterized in that: the vacuum oiling device comprises an oiling pump (23) installed on one side of the rack (1), a vacuum pump (24) and a sealing cylinder (25), wherein an oiling plate (26) is installed on the same side of the rack (1) in a sliding mode, the telescopic end of the sealing cylinder (25) is connected with the oiling plate (26), and an oiling pipe (27) and a sealing top block (28) are arranged on the oiling plate (26) in a penetrating mode.
8. The track pin vacuum oiling device of claim 7, wherein: one end of the oil filling pipe (27) is connected with the oil filling pump (23) and the vacuum pump (24), an oil filling nozzle (29) is installed at the other end of the oil filling pipe (27), and a vacuum sensor (30) and an electromagnetic valve (31) are installed on the oil filling pipe (27).
9. The track pin vacuum oiling device of claim 1, which is characterized in that: a vibrating disc (32) is arranged on one side of the oil injection pump (23) on the rack (1), and a rubber plug moving mechanism is arranged at the discharging end of the vibrating disc (32).
10. The track pin vacuum oiling device of claim 9, wherein: the rubber plug moving mechanism comprises a rubber plug moving cylinder (33) fixedly mounted on the transverse moving base (2) and a pneumatic clamping jaw (34) connected with the telescopic end of the rubber plug moving cylinder (33) and slidably mounted on the transverse moving base (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021257158.4U CN212900868U (en) | 2020-06-30 | 2020-06-30 | Vacuum oiling device for track pin shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021257158.4U CN212900868U (en) | 2020-06-30 | 2020-06-30 | Vacuum oiling device for track pin shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212900868U true CN212900868U (en) | 2021-04-06 |
Family
ID=75281438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021257158.4U Expired - Fee Related CN212900868U (en) | 2020-06-30 | 2020-06-30 | Vacuum oiling device for track pin shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212900868U (en) |
-
2020
- 2020-06-30 CN CN202021257158.4U patent/CN212900868U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107378378B (en) | Press-fitting and welding integrated device for gravure roller | |
| CN112157832B (en) | Wire saw cutting device | |
| CN108000789B (en) | Turntable die assembly mechanism | |
| CN212900868U (en) | Vacuum oiling device for track pin shaft | |
| CN219025723U (en) | Automatic stamping device is used in automobile parts production | |
| CN206544046U (en) | A kind of hydraulic compressing device of telescopic moving | |
| CN210588100U (en) | Tubular product throat device that punches for metalworking | |
| CN207873656U (en) | A kind of rotation clamp system | |
| CN215942274U (en) | Continuous feeding device of sawing machine for production of forged pieces | |
| CN216228984U (en) | Adjustable automatic product positioning device | |
| CN210173065U (en) | Full-automatic hydraulic clamp for channel steel machining | |
| CN112276243A (en) | Full-automatic copper pipe double-end inner chamfering robot and chamfering method | |
| CN210305308U (en) | Spacing unloading mould of tuber pipe angle bar | |
| CN208292229U (en) | Automatic blanking device | |
| CN209507036U (en) | A kind of long automatic charging machine of spring-compressed inspection | |
| CN216065649U (en) | Automobile support drilling device | |
| CN213702395U (en) | Lifting rod assembling equipment | |
| CN215091867U (en) | Cylinder press fitting production line | |
| CN215788883U (en) | Workpiece polishing equipment for communication equipment production | |
| CN216096560U (en) | Drilling machine for hardware machining with good clamping effect | |
| CN217393898U (en) | Plate shearing machine is used in processing of cable testing bridge support | |
| CN211803941U (en) | High pressure fuel pipe's pipeline perforating device | |
| CN213140528U (en) | Clamping device | |
| CN210101075U (en) | Automatic marking device for small pipe joint | |
| CN211468911U (en) | Drill bit clamping mechanism for drill bit packaging machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210406 |