CN213672536U - Automatic welding robot capable of positioning, fixing, clamping and welding - Google Patents

Automatic welding robot capable of positioning, fixing, clamping and welding Download PDF

Info

Publication number
CN213672536U
CN213672536U CN202022141619.8U CN202022141619U CN213672536U CN 213672536 U CN213672536 U CN 213672536U CN 202022141619 U CN202022141619 U CN 202022141619U CN 213672536 U CN213672536 U CN 213672536U
Authority
CN
China
Prior art keywords
groups
sides
installation
block
sleeve
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
CN202022141619.8U
Other languages
Chinese (zh)
Inventor
陈鹏
张辰
吴利兵
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.)
Liaoning Citic Goldman Sachs Technology Co ltd
Original Assignee
Liaoning Citic Goldman Sachs Technology 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 Liaoning Citic Goldman Sachs Technology Co ltd filed Critical Liaoning Citic Goldman Sachs Technology Co ltd
Priority to CN202022141619.8U priority Critical patent/CN213672536U/en
Application granted granted Critical
Publication of CN213672536U publication Critical patent/CN213672536U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Manipulator (AREA)

Abstract

The utility model discloses an automatic welding robot capable of positioning, fixing, clamping and welding, which comprises an installation bin, wherein slide rails are symmetrically arranged at the top and the bottom inside the installation bin, slide bars matched with the slide rails are arranged inside the two groups of slide rails, sleeve blocks C are sleeved outside the two groups of slide bars, one side of the two groups of sleeve blocks C, which are close to each other, is provided with an electric cylinder A, and the output ends of the two groups of electric cylinders A are provided with welding heads; the utility model discloses the device can make things convenient for operating personnel to place and align the material through mutually supporting of installation storehouse, threaded rod, grip block B, grip block A, electric cylinder B, servo motor A and internal thread cover block to reduce operating personnel work step, reduce its operating time, simultaneously through the two group's design of this part, can weld two sets of materials simultaneously, thereby improve operating personnel work efficiency.

Description

Automatic welding robot capable of positioning, fixing, clamping and welding
Technical Field
The utility model relates to an automatic change welding robot technical field specifically is a can fix a position fixed centre gripping welded automatic welding robot.
Background
When a welding piece is welded by the welding robot, a welding face of the welding robot is generally aligned with a welding head through manual work, but the accuracy of the manual alignment operation is poor, and a clamping device of the welding robot is generally a simple fixed structure, so that when the welding piece with different specifications is fixed, the switching is not flexible, the welding speed is greatly reduced, and therefore, the automatic welding robot capable of positioning, fixing, clamping and welding is provided;
the prior device has the following problems:
1. the existing device has a single internal structure, and can work on one material only when the material works, so that the working time of operators is increased, and the working efficiency of the operators is reduced;
2. when the existing device works on materials, most of the existing devices need manual turnover work by operators, the surfaces of the materials are easy to generate high temperature when in work, and the operators can be scalded accidentally, so that the potential safety hazard of the device in use is reduced;
3. when the existing device is used for butt joint of materials, most of the existing devices are still required to be manually butted by operators, the manual butt joint is inconvenient, and meanwhile, the butt joint position is not accurate, so that the welding quality of the device is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can fix a position fixed centre gripping welded automatic welding robot to it has following problem to propose the current device in the above-mentioned background art to solve: 1. the existing device has a single internal structure, and can work on one material only when the material works, so that the working time of operators is increased, and the working efficiency of the operators is reduced; 2. when the existing device works on materials, most of the existing devices need manual turnover work by operators, the surfaces of the materials are easy to generate high temperature when in work, and the operators can be scalded accidentally, so that the potential safety hazard of the device in use is reduced; 3. when the existing device is used for butt joint of materials, most of the existing devices are still required to be manually butted by operators, the manual butt joint is inconvenient, and meanwhile, the butt joint position is not accurate, so that the welding quality of the device is reduced.
In order to achieve the above object, the utility model provides a following technical scheme: the automatic welding robot capable of positioning, fixing, clamping and welding comprises an installation bin, wherein slide rails are symmetrically arranged on the top and the bottom of the interior of the installation bin, slide bars matched with the slide rails are arranged in two groups of the slide rails, sleeve blocks C are sleeved on the outer sides of the two groups of the slide bars, electric cylinders A are arranged on the sides, close to each other, of the two groups of the sleeve blocks C, welding heads are arranged at the output ends of the two groups of the electric cylinders A, installation blocks A are arranged on one sides, close to the outer sides of the two groups of the slide bars, electric push rods A are arranged on the top and the bottom of one side, close to the sleeve blocks C, of the two groups of the installation blocks A, the output ends of the electric push rods A are connected with the sleeve blocks C, electric push rods B are arranged at one end of the back of the interiors of the two groups of the slide rails, the output, the inner sides of the two groups of mounting grooves, which are close to each other, are provided with mounting rods, the outer sides of the two groups of mounting rods are respectively sleeved with a sleeve block A and a sleeve block B which are matched with each other, one side, which is far away from the mounting groove, of the sleeve block A and the sleeve block B, is provided with an electric cylinder B, the output ends of the two groups of electric cylinders B and one side, which is far away from the mounting groove, of the other group of sleeve block A and the other group of sleeve block B are provided with a servo motor A, the output ends of the four groups of servo motors A are provided with inner thread sleeve blocks, threaded rods which are matched with the inner thread sleeve blocks penetrate through the inner parts of the four groups of inner thread sleeve blocks, one sides, which are close to each other, of the four groups of inner thread sleeve blocks are provided with clamping plates A, the outer sides, which are close to one sides, of, the bottom symmetry of installation storehouse both sides is provided with servo motor B, and is two sets of servo motor B's output extends to the inside of mounting groove and is provided with the belt pulley, and is two sets of the outside cover of belt pulley is equipped with rather than the belt of mutually supporting, and is two sets of the one end and the nest block B interconnect of belt are two sets of nest block B's one end and installation piece B interconnect are kept away from to the belt, the intermediate position department of the positive one end one side of installation storehouse is provided with the mounting panel, the positive one end of mounting panel is provided with control panel, control panel passes through the wire and is connected with electric cylinder A, electric cylinder B, servo motor A, servo motor B, electric putter A and electric putter B electricity respectively.
Preferably, the clamping plate A and the clamping plate B are provided with rubber pads at the side close to each other, and the rubber pads are connected with the clamping plate A and the clamping plate B.
Preferably, the front end of the installation bin is provided with a bin door, and the front end of the bin is provided with a handle.
Preferably, the two ends of the threaded rod are symmetrically provided with stop blocks, and the stop blocks are connected with the threaded rod.
Preferably, the outside of servo motor B is provided with the protection storehouse, and the inboard in protection storehouse is provided with the shock attenuation amortization cotton.
Preferably, one end of the back of the installation bin is provided with an observation window.
Compared with the prior art, the beneficial effects of the utility model are that: the automatic welding robot capable of positioning, fixing, clamping and welding can facilitate the placement and alignment of materials by operators, can also realize the automatic rotation of the device, and can facilitate the operators to perform secondary adjustment on the alignment position of the materials;
1. through the mutual matching of the mounting bin, the threaded rod, the clamping plate B, the clamping plate A, the electric cylinder B, the servo motor A and the internal thread sleeve block, an operator can conveniently place and align materials, so that the working steps of the operator are reduced, the working time of the operator is reduced, and meanwhile, through the double-group design of the component, two groups of materials can be welded simultaneously, so that the working efficiency of the operator is improved;
2. the device can automatically rotate through the matching of the servo motor A, an operator does not need to manually turn over the surface, and meanwhile, the device can conveniently weld different positions through the mutual matching of the electric push rod A, the sleeve block C, the slide rod, the electric cylinder A, the welding head, the electric push rod B, the slide rod and the slide rail, so that the practicability of the device is improved;
3. through mutually supporting of servo motor B, belt pulley, belt, nest block A, nest block B and installation pole, can make things convenient for operating personnel to carry out the secondary adjustment to the material alignment position once more to increase the degree of accuracy that the device aligns, thereby improve material welding quality.
Drawings
Fig. 1 is a front sectional view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a side sectional view of the first embodiment of the present invention;
fig. 4 is a side sectional view of the second embodiment of the present invention;
fig. 5 is a back view of the present invention.
In the figure: 1. installing a bin; 2. a sleeve block A; 3. mounting a rod; 4. an electric cylinder A; 5. a slide bar; 6. a slide rail; 7. mounting grooves; 8. an electric cylinder B; 9. a threaded rod; 10. a servo motor A; 11. a sleeve block B; 12. A servo motor B; 13. a belt pulley; 14. an internal thread sleeve block; 15. a clamping plate A; 16. welding a head; 17. an electric push rod A; 18. mounting a block A; 19. a clamping plate B; 20. a belt; 21. an electric push rod B; 22. Mounting a plate; 23. a control panel; 24. a sleeve block C; 25. and installing the block B.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides an embodiment: an automatic welding robot capable of positioning, fixing, clamping and welding comprises an installation bin 1, slide rails 6 are symmetrically arranged on the top and the bottom of the interior of the installation bin 1, slide bars 5 matched with the slide rails are arranged inside two groups of slide rails 6, sleeve blocks C24 are sleeved on the outer sides of the two groups of slide bars 5, electric cylinders A4 are arranged on the sides, close to each other, of the sleeve blocks C24, welding joints 16 are arranged at the output ends of the electric cylinders A3526, the automatic welding robot can be used for welding different positions conveniently, practicability of the automatic welding robot is improved, installation blocks A18 are arranged on one sides of the outer sides of the two groups of slide bars 5, electric push rods 17 are arranged on the top and the bottom, close to one sides of the sleeve blocks C24, of the installation blocks A18, the output ends of the electric push rods A17 are connected with the sleeve blocks C24, electric push rods B21 are arranged at one ends of the back of the interior of the two groups of slide rails 6, and the output, the automatic welding device has the advantages that the automatic welding device can be conveniently placed and aligned by operators, working steps of the operators are reduced, working time of the operators is reduced, meanwhile, two groups of materials can be welded simultaneously through double-group design of the parts, working efficiency of the operators is improved, mounting grooves 7 are symmetrically arranged on two sides in the mounting bin 1, mounting rods 3 are arranged on one sides, close to each other, in the two groups of mounting grooves 7, sleeve blocks A2 and sleeve blocks B11 matched with the mounting rods 3 are respectively sleeved on the outer sides of the two groups of mounting rods 3, electric cylinders B8 are arranged on one sides, far away from the mounting grooves 7, of one group of sleeve blocks A2 and sleeve blocks B11, output ends of the two groups of electric cylinders B8 and one sides, far away from the mounting grooves 7, of the other group of sleeve blocks A2 and sleeve blocks B11 are provided with servo motors A10, automatic rotation of the automatic welding device can be realized, the operators do not need to manually turn over the work, threaded rods 9 matched with the four groups of internal thread sleeve blocks 14 penetrate through the four groups of internal thread sleeve blocks 14, clamping plates A15 are arranged on the sides, close to each other, of the four groups of internal thread sleeve blocks 14, clamping plates B19 are arranged on the outer sides, close to each other, of the four groups of threaded rods 9, clamping plates B19 are matched with the clamping plates A15, mounting blocks B25 are arranged at one ends of the back faces of the two groups of sleeve blocks A2, servo motors B12 are symmetrically arranged at the bottoms of the two sides of the mounting bin 1, the output ends of the two groups of servo motors B12 extend into the mounting groove 7 and are provided with belt pulleys 13, belts 20 matched with the belt pulleys are sleeved on the outer sides of the two groups of belt pulleys 13, one ends of the two groups of belts 20 are connected with the sleeve blocks B11, one ends, far away from the sleeve blocks B11, of the two groups of belts 20 are connected with the mounting blocks B25, the material alignment position, thereby improve material welding quality, the intermediate position department of installation storehouse 1 positive one end one side is provided with mounting panel 22, and the positive one end of mounting panel 22 is provided with control panel 23, and control panel 23 passes through the wire and is connected with electric cylinder A4, electric cylinder B8, servo motor A10, servo motor B12, electric putter A17 and electric putter B21 electricity respectively.
Furthermore, the clamping plate A15 and the clamping plate B19 are provided with rubber pads on the sides close to each other, and the rubber pads are connected with the clamping plate A15 and the clamping plate B19 to prevent materials from being abraded.
Furthermore, a bin door is arranged at one end of the front side of the mounting bin 1, and a handle is arranged at one end of the front side of the bin, so that the mounting bin is convenient to open.
Furthermore, the two ends of the threaded rod 9 are symmetrically provided with check blocks, and the check blocks are connected with the threaded rod 9 to prevent the threaded rod 9 from falling off
Furthermore, the outside of servo motor B12 is provided with the protection storehouse, and the inboard in protection storehouse is provided with the shock attenuation amortization cotton, is convenient for protect.
Furthermore, one end of the back of the installation bin 1 is provided with an observation window, so that observation is facilitated.
The working principle is as follows: the electric parts of the device are all powered by an external power supply, firstly, the device is moved to a specified position, and the power supply is switched on to turn on the control panel 23;
when the device is used, firstly, a bin door at one end of the front surface of the mounting bin 1 is opened, the clamping plate B19 is driven to move by rotating the threaded rod 9, then materials to be welded are placed on the inner side of the clamping plate A15, the clamping plate B19 is driven to move by rotating the threaded rod 9, the clamping plate B19 and the clamping plate A15 are matched with each other to clamp and fix the materials, then the servo motor A10 is pushed by the electric cylinder B8, the servo motor A10 drives the internal thread sleeve block 14 and the parts above the internal thread sleeve block to move, the welding positions of the materials are aligned, and the materials can be conveniently placed and aligned by an operator through the matching of the parts, so that the working steps of the operator are reduced, the working time of the operator is reduced, meanwhile, two groups of the materials can be welded simultaneously through the design of the parts, and the working efficiency of the operator is improved;
when the device works, the servo motor A10 is turned on through the control panel 23, the servo motor A10 and the components above the servo motor A10 are driven to drive materials to rotate synchronously through the synchronous rotation of the servo motor A10, so that the device can rotate automatically, an operator does not need to turn over the materials manually, meanwhile, the sleeve block C24 is pushed by the electric push rod A17 to slide left and right on the outer side of the sliding rod 5, the sleeve block C24 drives the electric cylinder A4 and the welding head 16 to move simultaneously, then the welding head 16 is pushed to a specified position by the electric cylinder A4 to weld the welding position, meanwhile, the sliding rod 5 is pushed by the electric push rod B21 to move back and forth inside the sliding rail 6, the sliding rod 5 and the components above the sliding rod 5 move back and forth, the device can conveniently weld different positions, and the practicability of the device is improved;
drive belt pulley 13 through servo motor B12 and rotate, make belt pulley 13 drive belt 20 reciprocate, it slides in the outside of installation pole 3 to drive sleeve block A2 and sleeve block B11 simultaneously through belt 20, it removes to make it drive sleeve block A2 and sleeve block B11 above portion through the slip of sleeve block A2 and sleeve block B11, can make things convenient for operating personnel to align the position to the material again and carry out secondary control, so that increase the degree of accuracy that the device aligns, thereby improve material welding quality.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. 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.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims (6)

1. The utility model provides a can fix a position fixed centre gripping welded automatic welding robot, includes installation storehouse (1), its characterized in that: the two sides of the top and the bottom in the installation bin (1) are symmetrically provided with slide rails (6), the two groups of slide rails (6) are internally provided with slide bars (5) which are matched with the slide rails, the outer sides of the two groups of slide bars (5) are sleeved with sleeve blocks C (24), one sides of the two groups of sleeve blocks C (24) which are close to each other are provided with electric cylinders A (4), the output ends of the two groups of electric cylinders A (4) are provided with welding joints (16), one sides of the outer sides of the two groups of slide bars (5) are provided with installation blocks A (18), the top and the bottom of one sides of the two groups of installation blocks A (18) which are close to the sleeve blocks C (24) are provided with electric push rods A (17), the output ends of the electric push rods A (17) are connected with the sleeve blocks C (24), one end of the back in the two groups of slide rails (, the output end of the electric push rod B (21) is connected with the slide rod (5), mounting grooves (7) are symmetrically arranged on two sides in the mounting bin (1), mounting rods (3) are arranged on one sides, close to each other, in the two mounting grooves (7), the outer sides of the two mounting rods (3) are respectively sleeved with a sleeve block A (2) and a sleeve block B (11) which are matched with each other, one sides, far away from the mounting grooves (7), of the sleeve block A (2) and the sleeve block B (11) are respectively provided with an electric cylinder B (8), the output ends of the two groups of electric cylinders B (8) and one sides, far away from the mounting grooves (7), of the other group of sleeve block A (2) and the sleeve block B (11) are respectively provided with a servo motor A (10), the output ends of the four groups of servo motors A (10) are respectively provided with an internal thread sleeve block (14), threaded rods (9) matched with each other are penetrated through the internal thread sleeve blocks (14), four sets of the one side that internal thread nest block (14) is close to each other all is provided with grip block A (15), four sets of the outside that threaded rod (9) are close to one side each other all is provided with grip block B (19), and grip block B (19) and grip block A (15) mutual adaptation, and two sets of the back one end of nest block A (2) all is provided with installation piece B (25), the bottom symmetry of erection bin (1) both sides is provided with servo motor B (12), and two sets of the output of servo motor B (12) extends to the inside of mounting groove (7) and is provided with belt pulley (13), and the outside cover of two sets of belt pulley (13) is equipped with belt (20) rather than mutually supporting, and two sets of the one end and nest block B (11) interconnect of belt (20), and two sets of belt (20) keep away from the one end and the installation piece B (25) interconnect of nest block B (11), the utility model discloses an installation storehouse, including installation storehouse (1), mounting panel (22) are provided with to the intermediate position department of installation storehouse (1) positive one end one side, the positive one end of mounting panel (22) is provided with control panel (23), control panel (23) are connected with electric cylinder A (4), electric cylinder B (8), servo motor A (10), servo motor B (12), electric putter A (17) and electric putter B (21) electricity respectively through the wire.
2. The automated welding robot capable of positioning, fixing and clamping welding according to claim 1, characterized in that: and one side of each clamping plate A (15) and one side of each clamping plate B (19) which are close to each other are provided with rubber pads, and the rubber pads are connected with the clamping plates A (15) and the clamping plates B (19) mutually.
3. The automated welding robot capable of positioning, fixing and clamping welding according to claim 1, characterized in that: the front end of the installation bin (1) is provided with a bin door, and the front end of the bin is provided with a handle.
4. The automated welding robot capable of positioning, fixing and clamping welding according to claim 1, characterized in that: the two ends of the threaded rod (9) are symmetrically provided with stop blocks, and the stop blocks are connected with the threaded rod (9) mutually.
5. The automated welding robot capable of positioning, fixing and clamping welding according to claim 1, characterized in that: the outside of servo motor B (12) is provided with the protection storehouse, and the inboard in protection storehouse is provided with the shock attenuation amortization cotton.
6. The automated welding robot capable of positioning, fixing and clamping welding according to claim 1, characterized in that: an observation window is arranged at one end of the back of the installation bin (1).
CN202022141619.8U 2020-09-27 2020-09-27 Automatic welding robot capable of positioning, fixing, clamping and welding Expired - Fee Related CN213672536U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022141619.8U CN213672536U (en) 2020-09-27 2020-09-27 Automatic welding robot capable of positioning, fixing, clamping and welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022141619.8U CN213672536U (en) 2020-09-27 2020-09-27 Automatic welding robot capable of positioning, fixing, clamping and welding

Publications (1)

Publication Number Publication Date
CN213672536U true CN213672536U (en) 2021-07-13

Family

ID=76750608

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022141619.8U Expired - Fee Related CN213672536U (en) 2020-09-27 2020-09-27 Automatic welding robot capable of positioning, fixing, clamping and welding

Country Status (1)

Country Link
CN (1) CN213672536U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115781138A (en) * 2023-02-06 2023-03-14 深圳市德宝精密科技有限公司 Local thermal cutting type automatic welding system for die machining

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115781138A (en) * 2023-02-06 2023-03-14 深圳市德宝精密科技有限公司 Local thermal cutting type automatic welding system for die machining
CN115781138B (en) * 2023-02-06 2023-09-26 深圳市德宝精密科技有限公司 Automatic welding system for mold processing

Similar Documents

Publication Publication Date Title
CN209830442U (en) A cutting head device, a cutting device and a cutting production line using the same
CN210838682U (en) A remote control visual cable cutting device
CN213072383U (en) Clamp for motor stator production
CN119674782A (en) A live wire traction device for maintenance
CN209487906U (en) A kind of welder for cable core docking
CN219986698U (en) Boats and ships T section bar assembly depression bar device
CN209905870U (en) Grabbing mechanism
CN110943401B (en) A remote control visual cable cutting device
CN215941968U (en) Aluminum plate circumferential weld welding machine
CN211387358U (en) Cable laser marking device
CN111478528B (en) Riveting mechanism for lug plate of rectifier of alternating-current generator
CN213591880U (en) Hob wheel pipe cutting machine
CN213592148U (en) Motor processing fixing device
CN210910334U (en) Foam cutting machine of convenient operation
CN220826264U (en) Injection molding stub bar cutting device
CN220234006U (en) High-voltage cable aluminum foil cutting mechanism
CN116872101B (en) Adjustable grip mechanical repair pliers
CN219247320U (en) Line transformation frock
CN221019072U (en) A changeable operating table for electric welding machine
CN223531709U (en) Movable type two-protection welding machine for welding steel beams
CN213985939U (en) Electronic universal testing machine with protection function
CN214264139U (en) Plate cutting equipment for architectural decoration
CN214000614U (en) Automatic hot melting machine for outer frame of notebook computer keyboard
CN220553681U (en) High-voltage electrified lead connecting device
CN215435054U (en) Cable heat sealing machine with burr removing function

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: 20210713