CN215239261U - Novel rotary workbench of machining center - Google Patents

Novel rotary workbench of machining center Download PDF

Info

Publication number
CN215239261U
CN215239261U CN202120622096.0U CN202120622096U CN215239261U CN 215239261 U CN215239261 U CN 215239261U CN 202120622096 U CN202120622096 U CN 202120622096U CN 215239261 U CN215239261 U CN 215239261U
Authority
CN
China
Prior art keywords
dust
dust collection
bracing piece
fixedly connected
workstation
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
Application number
CN202120622096.0U
Other languages
Chinese (zh)
Inventor
钟水先
董旭红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Zhuoyuxing Mould Plastic Products Co ltd
Original Assignee
Shenzhen Zhuoyuxing Mould Plastic Products Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Zhuoyuxing Mould Plastic Products Co ltd filed Critical Shenzhen Zhuoyuxing Mould Plastic Products Co ltd
Priority to CN202120622096.0U priority Critical patent/CN215239261U/en
Application granted granted Critical
Publication of CN215239261U publication Critical patent/CN215239261U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The utility model discloses a new machining center's swivel work head belongs to swivel work head technical field, a new machining center's swivel work head, which comprises a supporting seat, the top fixedly connected with bracing piece of supporting seat, the cover is equipped with the dust extraction rather than fixed connection on the bracing piece, the cover is equipped with the workstation rather than rotating the connection on the bracing piece, dust extraction's top is inlayed and is located on the workstation, two draw-in grooves have been seted up at the top of workstation, the cover is equipped with the ash removal device rather than sliding connection on the bracing piece, the bottom of sweeping the ash removal device and the inner wall contact of draw-in groove. The utility model discloses a, can reduce the dust through dust extraction and fly upward, and then protect workman's healthy to can convenient and fast clear up the mesa of workstation through sweeping the ash device, and then shorten the clean required time of workman, improve workman's work efficiency.

Description

Novel rotary workbench of machining center
Technical Field
The utility model relates to a swivel work head technical field, more specifically say, relate to a new machining center's swivel work head.
Background
The machine tool accessory is a rotary table or a fourth shaft for short, and is provided with a rotatable table top and used for clamping workpieces and realizing rotation and indexing positioning.
When the worker operates on the rotary worktable of the machining center, scraps or dust can appear, the rotary worktable of the existing machining center does not have the dust removal effect, the worker sucks the dust to influence the health of the body, the table top of the rotary worktable of the machining center is very troublesome to clean, a large amount of working time of the worker needs to be spent, the working efficiency is reduced, and therefore a new rotary worktable of the machining center is needed.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
Problem to exist among the prior art, the utility model aims to provide a new machining center's swivel work head possesses the clearance of being convenient for and dirt-proof advantage, has solved the problem that above-mentioned background art mentioned.
2. Technical scheme
In order to solve the above problems, the utility model adopts the following technical proposal.
The utility model provides a new machining center's swivel work head, includes the supporting seat, the top fixedly connected with bracing piece of supporting seat, the cover is equipped with the dust extraction rather than fixed connection on the bracing piece, the cover is equipped with rather than rotates the workstation of being connected on the bracing piece, dust extraction's top is inlayed and is located on the workstation, two draw-in grooves have been seted up at the top of workstation, the cover is equipped with rather than sliding connection's the grey device of sweeping on the bracing piece, the bottom of sweeping the grey device contacts with the inner wall of draw-in groove.
As a further aspect of the present invention: the dust collection device comprises a dust collection box, the dust collection box is sleeved on a support rod and fixedly connected with the support rod, two fans are embedded in the bottom of the dust collection box, a dust collection pipe is embedded in the workbench, the bottom of the dust collection pipe is communicated with the dust collection box, the bottom of the dust collection pipe is rotatably connected with the dust collection box, grooves which are uniformly distributed are formed in the top of the workbench, the inner walls of the grooves are in contact with the dust collection pipe, filter screens are fixedly connected to the inner walls of the grooves, and filter plates are inserted into the left side and the right side of the dust collection box.
As a further aspect of the present invention: the dust collection pipe comprises a dust collection ring, the dust collection ring is embedded on the workbench, the bottom of the dust collection ring is communicated with a dust collection cylinder, the bottom end of the dust collection cylinder is inserted into the dust collection box and is rotatably connected with the dust collection box, the inner wall of the dust collection ring is communicated with vertical pipes which are uniformly distributed, the bottom of each vertical pipe is in contact with the inner wall of the corresponding groove, and dust collection holes which are arranged equidistantly are formed in the top of each vertical pipe.
As a further aspect of the present invention: sweep grey device and include the lift ring, the lift ring overlaps to be located on the bracing piece, fixedly connected with spring one on the lift ring, the top and the bracing piece fixed connection of spring one, two clean boards of bottom fixedly connected with of lift ring, two the equal sliding connection of inner wall of draw-in groove has waste material box, two the bottom of clean board contacts with the inner wall of two waste material boxes respectively.
As a further aspect of the present invention: the supporting seat comprises a fixed box, two inclined blocks are fixedly connected to the inner wall of the fixed box, a sliding block is inserted into the tops of the two fixed boxes, rolling wheels are connected to the left side and the right side of the sliding block in a sliding mode, the bottoms of the rolling wheels are in rolling connection with the two inclined blocks respectively, two springs are fixedly connected to the opposite sides of the rolling wheels, and the other ends of the springs are fixedly connected with the sliding block.
As a further aspect of the present invention: the left side and the right side of the workbench are fixedly connected with handles, and the surfaces of the two handles are provided with anti-skid lines.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
(1) the scheme can provide support for the whole device through the supporting seat, then workers can operate on the workbench, the dust sweeping device and the clamping groove are matched with each other to limit the workbench, when dust and sweeps appear during processing, the dust suction device is started to absorb the dust and the sweeps, the purpose of dust removal is further achieved, then after the work is finished, the dust sweeping device is pulled out from the clamping groove to unlock the workbench, the workbench can be rotated, meanwhile, the bottom of the dust sweeping device is in contact with the surface of the workbench, the surface of the workbench can be cleaned, the dust sweeping device can push the sweeps into the clamping groove, the purpose of cleaning the workbench is further achieved, the process is very convenient and fast, the dust flying can be reduced through the dust suction device, the body health of the workers is further protected, and the table top of the workbench can be cleaned conveniently and fast through the dust sweeping device, thereby shortening the time required by the cleaning of workers and improving the working efficiency of the workers.
(2) This scheme is when using dust extraction, at first start the fan, the fan can be through the dust absorption pipe with the dust suction incasement wall, and the filter screen can filter great sweeps, and then avoid the sweeps to block up the condition appearance of dust absorption pipe, and the dust can be filtered by the filter after entering into the dust absorption incasement portion, and then realize the purpose of removing dust, the user regularly take out the filter clearance put back can, dust extraction can reduce the dust and fly upward, and then the protection workman's is healthy.
(3) This scheme is when the dust absorption box is in the dust absorption, and inside the dust absorption hole that the dust can be seted up on through the standpipe entered into the standpipe, the dust absorption ring can enter into the dust absorption through the standpipe after that, and the dust absorption ring can be inputed the dust into the dust absorption incasement after that, and then realize the purpose of dust absorption to the workstation is when rotating, and the dust absorption ring can rotate on the dust absorption box, and then the purpose that dust extraction can normal use when realizing rotating the workstation, improves the practicality of device.
(4) The proposal can push the cleaning plate to contact with the inner wall of the clamping groove through the elastic force of the first spring, thereby achieving the purpose of fixing the workbench, when the dust sweeping device is used, a user only needs to lift the lifting ring to draw the cleaning plate out of the clamping groove, the workbench can be unlocked, after the unlocking, workers can start to clean the table top of the workbench by rotating the workbench, and in the rotating process of the workbench, the bottom of the cleaning plate is always contacted with the surface of the workbench, so that the table surface of the workbench can be cleaned, then the workbench is rotated, the cleaning plate falls into the clamping groove from the beginning and fixes the workbench from the beginning, meanwhile the cleaning plate pushes the waste into the clamping groove, the waste material can fall into the waste material box inside after that, and the workman only need take out waste material box and can clear up the waste material, and then reduces workman's work load, improves workman work efficiency.
(5) When the device is used, vibration can occur, the vibration can be transmitted to the slider through the supporting rod, the slider can drive the rollers to slide on the inclined block, then the two rollers can be close to each other to compress the spring II, and the spring II can buffer the slider, so that the aim of damping the device is fulfilled, and the practicability of the device is improved.
(6) The handle that this scheme passes through the equal fixed connection of workstation left and right sides can make things convenient for the workman to rotate the workstation, makes things convenient for workman clean bench to the anti-skidding line that the handle surface was all opened can increase frictional force, and further makes things convenient for the workman to rotate the workstation, improves the practicality of device.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a front sectional view of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;
fig. 4 is a subjective view of the present invention.
The reference numbers in the figures illustrate:
1. a supporting seat; 101. a fixed box; 102. a sloping block; 103. a slider; 104. a roller; 105. a second spring; 2. a support bar; 3. a dust collection device; 301. a dust collection box; 302. a fan; 303. a dust collection pipe; 31. a dust collecting ring; 32. a dust suction cylinder; 33. a vertical tube; 34. a dust collection hole; 304. a groove; 305. a filter screen; 306. a filter plate; 4. a work table; 5. a card slot; 6. a handle; 7. a dust sweeping device; 701. a lifting ring; 702. a first spring; 703. cleaning the plate; 704. a waste material box.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
Example 1
Please refer to fig. 1-4, in the embodiment of the present invention, a new machining center's swivel work head, including supporting seat 1, supporting seat 1's top fixedly connected with bracing piece 2, the cover is equipped with rather than fixed connection's dust extraction 3 on the bracing piece 2, the cover is equipped with rather than the workstation 4 of being connected of rotating on the bracing piece 2, dust extraction 3's top is inlayed and is located on workstation 4, two draw-in grooves 5 have been seted up at workstation 4's top, the cover is equipped with rather than sliding connection's the ash removal device 7 of sweeping on bracing piece 2, sweep the inner wall contact of ash removal device 7's bottom and draw-in groove 5.
In the embodiment, the supporting seat 1 can support the whole device, then a worker can operate on the workbench 4, the dust sweeping device 7 is matched with the clamping groove 5 to limit the workbench 4, then when dust and scraps appear during machining, the dust suction device 3 is started, the dust suction device 3 can absorb the dust and the scraps to achieve the purpose of dust removal, then after the work is finished, the dust sweeping device 7 is drawn out from the clamping groove 5 to unlock the workbench 4, the workbench 4 can be rotated, meanwhile, the bottom of the dust sweeping device 7 is in surface contact with the workbench 4 to clean the surface of the workbench 4, the dust sweeping device 7 can push the scraps into the clamping groove 5 to achieve the purpose of cleaning the workbench 4, the process is very convenient and rapid, the device can reduce dust flying through the dust suction device 3, further protecting the health of workers, and cleaning the table-board of the working table 4 conveniently and quickly by the dust sweeping device 7, further shortening the time required by the cleaning of the workers and improving the working efficiency of the workers.
Example 2
Referring to fig. 1 to 4, a further improvement is made on the basis of embodiment 1:
the dust collection device 3 comprises a dust collection box 301, the dust collection box 301 is sleeved on the support rod 2 and fixedly connected with the support rod, two fans 302 are embedded at the bottom of the dust collection box 301, a dust collection pipe 303 is embedded on the workbench 4, the bottom of the dust collection pipe 303 is communicated with the dust collection box 301, the bottom of the dust collection pipe 303 is rotatably connected with the dust collection box 301, uniformly distributed grooves 304 are formed in the top of the workbench 4, the inner walls of the grooves 304 are in contact with the dust collection pipe 303, filter screens 305 are fixedly connected to the inner walls of the grooves 304, and filter screens 306 are inserted into the left side and the right side of the dust collection box 301; the dust suction pipe 303 comprises a dust suction ring 31, the dust suction ring 31 is embedded on the workbench 4, the bottom of the dust suction ring 31 is communicated with a dust suction cylinder 32, the bottom end of the dust suction cylinder 32 is inserted on the dust suction box 301 and is rotatably connected with the dust suction box, the inner wall of the dust suction ring 31 is communicated with vertical pipes 33 which are uniformly distributed, the bottom of the vertical pipes 33 is contacted with the inner wall of the groove 304, and dust suction holes 34 which are arranged at equal intervals are formed in the top of the vertical pipes 33; the ash sweeping device 7 comprises a lifting ring 701, the lifting ring 701 is sleeved on the support rod 2, a first spring 702 is fixedly connected to the lifting ring 701, the top end of the first spring 702 is fixedly connected with the support rod 2, two cleaning plates 703 are fixedly connected to the bottom of the lifting ring 701, waste material boxes 704 are slidably connected to the inner walls of the two clamping grooves 5, and the bottoms of the two cleaning plates 703 are respectively contacted with the inner walls of the two waste material boxes 704; the supporting seat 1 comprises a fixed box 101, two inclined blocks 102 are fixedly connected to the inner wall of the fixed box 101, sliding blocks 103 are inserted into the tops of the two fixed boxes 101, rollers 104 are slidably connected to the left side and the right side of each sliding block 103, the bottoms of the two rollers 104 are respectively in rolling connection with the two inclined blocks 102, springs 105 are fixedly connected to the opposite sides of the two rollers 104, and the other ends of the two springs 105 are fixedly connected with the sliding blocks 103; the left side and the right side of the workbench 4 are fixedly connected with handles 6, and the surfaces of the two handles 6 are provided with anti-skid lines.
In this embodiment, when the dust collection device 3 is used, firstly, the fan 302 is started, the fan 302 sucks dust into the inner wall of the dust collection box 301 through the dust collection pipe 303, and the filter screen 305 filters larger waste scraps, so as to avoid the situation that the dust collection pipe 303 is blocked by the waste scraps, and the dust is filtered by the filter plate 306 after entering the dust collection box 301, so as to achieve the purpose of dust collection; when the dust collection box 301 collects dust, the dust can enter the vertical pipe 33 through the dust collection hole 34 formed in the vertical pipe 33, then the dust can enter the dust collection ring 31 through the vertical pipe 33, the dust collection ring 31 can input the dust into the dust collection box 301, and then the purpose of dust collection is achieved, and when the workbench 4 rotates, the dust collection ring 31 can rotate on the dust collection box 301, so that the purpose that the dust collection device 3 can be normally used when the workbench 4 rotates is achieved, and the practicability of the device is improved; when the dust cleaning device 7 is used, a user only needs to lift the lifting ring 701 to draw the cleaning plate 703 out of the clamping groove 5 to unlock the workbench 4, after unlocking, the worker rotates the workbench 4 to clean the table top of the workbench 4, in the rotating process of the workbench 4, the bottom of the cleaning plate 703 is always in contact with the surface of the workbench 4 to clean the table top of the workbench 4, then the workbench 4 is rotated, the cleaning plate 703 falls into the clamping groove 5 from the inside to fix the workbench 4, meanwhile, the cleaning plate 703 pushes waste into the clamping groove 5, the waste falls into the waste box 704, the worker only needs to draw the waste box 704 to clean the waste, and further the workload of the worker is reduced, the working efficiency of workers is improved; when the device is used, vibration occurs, the vibration is transmitted to the sliding block 103 through the supporting rod 2, the sliding block 103 drives the rollers 104 to slide on the inclined block 102, then the two rollers 104 approach to each other to compress the second spring 105, and the second spring 105 buffers the sliding block 103, so that the purpose of damping the device is achieved, and the practicability of the device is improved; handle 6 through the equal fixed connection in 4 left and right sides of workstation can make things convenient for the workman to rotate workstation 4, makes things convenient for workman clean table 4 to the antiskid line that 6 surfaces of handle all opened can increase frictional force, and further make things convenient for workman to rotate workstation 4, improves the practicality of device.
The working principle is as follows: the whole device can be supported by the supporting seat 1, then a worker can operate on the workbench 4, the dust sweeping device 7 and the clamping groove 5 are matched with each other to limit the workbench 4, when dust and scraps appear during machining, the fan 302 is started firstly, the fan 302 sucks the dust into the inner wall of the dust suction box 301 through the dust suction pipe 303, the filter screen 305 filters the larger scraps, the situation that the dust suction pipe 303 is blocked by the scraps is avoided, the dust is filtered by the filter screen 306 after entering the dust suction box 301, the purpose of dust removal is achieved, the user can take out the filter screen 306 regularly to clean and put back, the dust suction device 3 can reduce dust flying, the body health of the worker is protected, and after the work is finished, the user only needs to lift the lifting ring 701 to lift the cleaning plate 703 out of the clamping groove 5, and can unlock the workbench 4, after unlocking, a worker can start cleaning the table top of the workbench 4 by rotating the workbench 4, in the rotating process of the workbench 4, the bottom of the cleaning plate 703 is always in contact with the surface of the workbench 4, so that the table top of the workbench 4 can be cleaned, then the workbench 4 is rotated, the cleaning plate 703 can fall into the clamping groove 5 from the inside and fix the workbench 4 from the inside, meanwhile, the cleaning plate 703 can push waste materials into the clamping groove 5, then the waste materials fall into the waste material box 704, the worker can clean the waste materials only by drawing out the waste material box 704, so that the workload of the worker is reduced, the working efficiency of the worker is improved, the dust flying can be reduced by the dust collection device 3, the health of the worker is protected, the table top of the workbench 4 can be cleaned conveniently and quickly by the dust cleaning device 7, and the time required by the worker for cleaning is shortened, improve workman's work efficiency.
The above is only a preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims (6)

1. The utility model provides a new machining center's swivel work head, includes supporting seat (1), its characterized in that: the top fixedly connected with bracing piece (2) of supporting seat (1), the cover is equipped with dust extraction (3) rather than fixed connection on bracing piece (2), the cover is equipped with rather than rotates workstation (4) of being connected on bracing piece (2), the top of dust extraction (3) is inlayed and is located on workstation (4), two draw-in grooves (5) have been seted up at the top of workstation (4), the cover is equipped with rather than sliding connection's the grey device (7) of sweeping on bracing piece (2), sweep the bottom of grey device (7) and the inner wall contact of draw-in groove (5).
2. A new machining center rotary table according to claim 1, characterized in that: dust extraction (3) are including dust collection box (301), dust collection box (301) cover is located on bracing piece (2) and rather than fixed connection, the bottom of dust collection box (301) is inlayed and is equipped with two fans (302), inlay on workstation (4) and be equipped with dust absorption pipe (303), dust absorption pipe (303) bottom is linked together with dust collection box (301), the bottom and the dust collection box (301) of dust absorption pipe (303) rotate to be connected, evenly distributed's recess (304) are seted up at the top of workstation (4), the inner wall and the contact of dust absorption pipe (303) of recess (304), the inner wall fixedly connected with filter screen (305) of recess (304), filter (306) have all been pegged graft to the left and right sides of dust collection box (301).
3. A new machining center rotary table according to claim 2, characterized in that: the dust collection pipe (303) comprises a dust collection ring (31), the dust collection ring (31) is embedded on the workbench (4), the bottom of the dust collection ring (31) is communicated with a dust collection barrel (32), the bottom end of the dust collection barrel (32) is inserted into the dust collection box (301) and is rotatably connected with the dust collection box, the inner wall of the dust collection ring (31) is communicated with vertical pipes (33) which are uniformly distributed, the bottom of each vertical pipe (33) is in contact with the inner wall of the corresponding groove (304), and dust collection holes (34) which are arranged equidistantly are formed in the top of each vertical pipe (33).
4. A new machining center rotary table according to claim 1, characterized in that: sweep grey device (7) including lift ring (701), on bracing piece (2) are located to lift ring (701) cover, fixedly connected with spring (702) on lift ring (701), the top and bracing piece (2) fixed connection of spring (702), two clean board (703) of bottom fixedly connected with of lift ring (701), two the equal sliding connection of inner wall of draw-in groove (5) has waste material box (704), two the bottom of clean board (703) contacts with the inner wall of two waste material boxes (704) respectively.
5. A new machining center rotary table according to claim 1, characterized in that: the supporting seat (1) comprises a fixed box (101), two inclined blocks (102) are fixedly connected to the inner wall of the fixed box (101), a sliding block (103) is inserted into the top of the two fixed boxes (101), rolling wheels (104) are slidably connected to the left side and the right side of the sliding block (103), the bottoms of the rolling wheels (104) are respectively in rolling connection with the two inclined blocks (102), two springs (105) are fixedly connected to the opposite sides of the rolling wheels (104), and the other ends of the springs (105) are fixedly connected with the sliding block (103).
6. A new machining center rotary table according to claim 1, characterized in that: the left side and the right side of the workbench (4) are fixedly connected with handles (6), and the surfaces of the handles (6) are provided with anti-skid lines.
CN202120622096.0U 2021-03-28 2021-03-28 Novel rotary workbench of machining center Expired - Fee Related CN215239261U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120622096.0U CN215239261U (en) 2021-03-28 2021-03-28 Novel rotary workbench of machining center

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120622096.0U CN215239261U (en) 2021-03-28 2021-03-28 Novel rotary workbench of machining center

Publications (1)

Publication Number Publication Date
CN215239261U true CN215239261U (en) 2021-12-21

Family

ID=79506032

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120622096.0U Expired - Fee Related CN215239261U (en) 2021-03-28 2021-03-28 Novel rotary workbench of machining center

Country Status (1)

Country Link
CN (1) CN215239261U (en)

Similar Documents

Publication Publication Date Title
CN214351356U (en) Safe and environment-friendly furniture board sander
CN212653199U (en) Automobile parts surface grinding device
CN116060658B (en) Horizontal numerical control boring and milling machine tool
CN112296848A (en) Plate-shaped part polishing device for hardware tool machining and using method thereof
CN215239261U (en) Novel rotary workbench of machining center
CN109571196A (en) A kind of efficient grinding device
CN216463795U (en) Environment-friendly grinding machine for machining
CN213225538U (en) Vertical grinding machine with inhale bits structure
CN213351893U (en) Grinding device for machining with dust collection function
CN212601041U (en) A grinding device for production of high-speed railway seat spare part
CN210550246U (en) Surface grinding device for door plate machining
CN207522280U (en) A kind of numerical control device grinding device
CN218137340U (en) Rotating shaft cylindrical grinding machine with scrap collecting function
CN215920750U (en) Single-shaft woodworking router with curtain separating device
CN217223787U (en) Part manufacturing plate shearing machine
CN220330964U (en) Polishing machine with dust collection structure
CN218254331U (en) Numerical control sander is used in plank production
CN220128339U (en) Double-end-face grinding machine with dust removal function
CN212496946U (en) High-protection guide rail plate deburring equipment
CN212287162U (en) Environment-friendly stainless steel burnishing device
CN108500785A (en) A kind of polishing machine for the processing of hairbrush handle
CN216859316U (en) Burnishing machine is used in machine part processing
CN218135185U (en) Planer-type milling machine with dustproof function
CN212885299U (en) End milling device convenient to it is clean
CN218746807U (en) Sheet metal welding part trimming and grinding 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

Granted publication date: 20211221

CF01 Termination of patent right due to non-payment of annual fee