[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN111515049B - Paint spraying device for hardware machining - Google Patents

Paint spraying device for hardware machining Download PDF

Info

Publication number
CN111515049B
CN111515049B CN202010432738.0A CN202010432738A CN111515049B CN 111515049 B CN111515049 B CN 111515049B CN 202010432738 A CN202010432738 A CN 202010432738A CN 111515049 B CN111515049 B CN 111515049B
Authority
CN
China
Prior art keywords
paint spraying
paint
machining
spraying device
mechanical parts
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
CN202010432738.0A
Other languages
Chinese (zh)
Other versions
CN111515049A (en
Inventor
孙晓燕
梁宁宁
于海青
矫莉
邹广明
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.)
Fengxian Wisdom Automation Equipment Research Institute Co ltd
Original Assignee
Fengxian Wisdom Automation Equipment Research Institute 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 Fengxian Wisdom Automation Equipment Research Institute Co Ltd filed Critical Fengxian Wisdom Automation Equipment Research Institute Co Ltd
Priority to CN202010432738.0A priority Critical patent/CN111515049B/en
Publication of CN111515049A publication Critical patent/CN111515049A/en
Application granted granted Critical
Publication of CN111515049B publication Critical patent/CN111515049B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0235Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being a combination of rotation and linear displacement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material

Landscapes

  • Spray Control Apparatus (AREA)

Abstract

The invention relates to the technical field of hardware machinery, and discloses a paint spraying device for machining hardware mechanical parts, which comprises a fixed base, wherein support frames are arranged on two sides of the upper end of the fixed base, a top plate is arranged at the top end of each support frame, limiting grooves are formed in the lower side of each top plate, fixed racks are arranged between the middle parts of the support frames, a sliding box is arranged in the middle of each fixed rack, a rotating gear is arranged in each sliding box, a paint spraying shaft is arranged in the middle of each rotating gear, the lower end of each paint spraying shaft penetrates through the corresponding sliding box and is connected with a paint spraying disc, the middle part of the upper end of each paint spraying shaft penetrates through a power box, the top end of each paint spraying shaft is arranged in each limiting groove, power blades are arranged. The invention enables the paint spraying shaft to move left and right while rotating for paint spraying, greatly increases the paint spraying uniformity, and simultaneously enables the high-pressure paint vehicle to be used as a power source by arranging the power box, thereby further reducing the cost of the device.

Description

Paint spraying device for hardware machining
Technical Field
The invention relates to the technical field of hardware machinery, in particular to a paint spraying device for hardware mechanical part machining.
Background
Hardware: traditional hardware is also called small hardware. It refers to five metals of gold, silver, copper, iron and tin. Can be made into artworks such as knives and swords or metal devices through manual processing. The hardware in modern society is more extensive, for example hardware and tools, hardware spare part, daily hardware, building hardware and security articles for use etc.. Hardware plays a very important role in daily life of people and is often used in living appliances and home decoration.
Spray painting refers to a coating method in which a spray gun or a disc atomizer disperses into uniform and fine droplets by means of pressure or centrifugal force and applies the droplets to the surface of an object to be coated. It can be divided into air spraying, airless spraying, electrostatic spraying and various derivatives of the above basic spraying forms, such as high flow low pressure atomized spraying, thermal spraying, automatic spraying, multiple spray groups, etc. In the production and processing process of hardware, it is one of them process to spray paint to it, and traditional mode of spraying paint is that the manual work is handed the paint spraying head and is sprayed paint to it, owing to be manual operation, has the inhomogeneous problem of spraying paint, and the effect of spraying paint is not good.
Chinese patent (publication No. CN209697278U) discloses a hardware mechanical paint spraying device for uniformly spraying paint, which comprises a workbench, a paint spraying head is arranged above the workbench and communicated with a connecting pipe, the left end and the right end of the workbench are respectively provided with a supporting side plate, the top and the middle of the supporting side plate are respectively provided with a top plate and a sliding rod, the sliding rod is sleeved with a sliding sleeve in a sliding way, so that the sliding sleeve can move on the sliding rod, the paint spraying head is arranged at the bottom of the sliding sleeve, the top of the sliding sleeve is connected with a connecting block, the upper end surface of the connecting block is provided with a support, the support is provided with a rotating wheel, although the device can realize uniform paint spraying effect on hardware mechanical parts to a certain extent, in actual operation, the paint spraying head cannot rotate, so that the sprayed paint mist cannot be uniformly adhered to the surface of the workpiece, and the quality of the later processing is seriously affected, and therefore, further improvement is required.
Disclosure of Invention
The invention aims to provide a paint spraying device for processing hardware mechanical parts, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a paint spraying apparatus is used in hardware and machinery processing, includes unable adjustment base, unable adjustment base upper end both sides erection bracing frame, support frame top installation roof, roof downside are equipped with the spacing groove, installation fixed rack between the support frame middle part, fixed rack middle part are equipped with the slip case, and the slip incasement portion is equipped with the rotary gear, and the rotary gear mid-mounting axle that sprays paint, the axle lower extreme that sprays paint pass the slip case and are connected with the dish that sprays paint, the axle upper end middle part that sprays paint passes headstock and top and locates the spacing inslot portion, is located the inside axle outside installation power leaf that sprays paint of headstock, the roof upper end installation draws the lacquer pump, draws lacquer pump intercommunication switching-over valve, and the switching-over valve is connected with left intake pipe and right intake pipe respectively, left side intake pipe and right intake pipe other end are.
As a further scheme of the invention: the four corners of the lower end of the fixed base are connected with buffering columns through buffering springs, and buffering cushions are mounted at the bottom ends of the buffering columns.
As a further scheme of the invention: the positioning device is characterized in that four corners of the upper end of the fixed base are connected with positioning rods in a threaded mode, positioning plates are arranged in the middle of the positioning rods, positioning frames are arranged at the top ends of the positioning rods, and clamping rods are arranged in the middle of the positioning frames.
As a further scheme of the invention: the inside hollow structure that is of the axle sprays paint, the axle bottom of spraying paint communicates with the dish that sprays paint each other, and the dish bottom of spraying paint is equipped with a plurality of paint spraying holes.
As a further scheme of the invention: and sliding grooves matched with the fixed rack are formed in the middle parts of the two ends of the sliding box.
As a further scheme of the invention: the gas distribution pipe is flush with the two ends of the power blade.
As a further scheme of the invention: guide posts are installed on two sides of the top end of the power box and are arranged in the limiting groove.
As a further scheme of the invention: the paint guide pump is connected with a paint suction pipe, and the paint suction pipe is connected with a paint bucket.
As a further scheme of the invention: and a plurality of paint inlet holes are formed in the paint spraying shaft between the power blades in the power box.
As a still further scheme of the invention: the lower end of the fixed base is provided with a yielding groove matched with the buffer column.
Compared with the prior art, the invention has the beneficial effects that:
the utility model provides a hardware and machinery parts processing is with paint spraying apparatus, rational in infrastructure, the modern design through the slip case that is equipped with and mutually support between the fixed rack for the axle that sprays paint can also remove about rotating when spraying paint, greatly increased the homogeneity that sprays paint, set up the headstock simultaneously and make high pressure paint vehicle itself can also regard as the power supply, further reduced the cost of device, the practicality is strong, and the reliability is high.
Drawings
Fig. 1 is a schematic structural diagram of a paint spraying device for machining hardware.
FIG. 2 is a schematic view of the structure A-A in FIG. 1.
FIG. 3 is a schematic structural diagram of a paint spraying tray in a paint spraying device for machining hardware.
FIG. 4 is a schematic diagram of the internal structure of a power box in a paint spraying device for machining hardware.
In the figure: 1-fixed base, 2-buffer spring, 3-buffer column, 4-buffer pad, 5-positioning rod, 6-positioning plate, 7-positioning frame, 8-clamping rod, 9-paint spraying disc, 10-paint spraying shaft, 11-sliding box, 12-fixed rack, 13-power box, 14-left air inlet pipe, 15-right air inlet pipe, 16-air distribution pipe, 17-top plate, 18-supporting frame, 19-limiting groove, 20-reversing valve, 21-paint guiding pump, 22-paint sucking pipe, 23-rotating gear, 24-sliding groove, 25-power blade, 26-paint spraying hole, 27-guide column and 28-paint inlet hole.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1 to 4, in the embodiment of the invention, a paint spraying device for machining hardware mechanical parts comprises a fixed base 1, four corners of the upper end of the fixed base 1 are connected with positioning rods 5 in a threaded manner, so that the positioning rods 5 can be adjusted up and down movably along the fixed base 1, a positioning plate 6 is arranged in the middle of each positioning rod 5 and used for clamping, positioning and fixing a workpiece to be painted, so that the workpiece cannot shake in the paint spraying process, a positioning frame 7 is arranged at the top end of each positioning rod 5, a clamping rod 8 is arranged in the middle of each positioning frame 7 and used for clamping the upper end surface of the workpiece, supporting frames 18 are arranged on two sides of the upper end of the fixed base 1, a top plate 17 is arranged at the top end of each supporting frame 18, a limiting groove 19 is arranged on the lower side of each top plate 17 and used for limiting and guiding the top ends of a guide post, a sliding box 11 is arranged in the middle of the fixed rack 12, the sliding box 11 can move left and right along the fixed rack 12, a rotating gear 23 is arranged in the sliding box 11, a paint spraying shaft 10 is arranged in the middle of the rotating gear 23, the inside of the paint spraying shaft 10 is of a hollow structure, the bottom end of the paint spraying shaft 10 is communicated with a paint spraying disc 9, so that the circulation guidance of paint in the paint spraying shaft 10 is ensured, a plurality of paint spraying holes 26 are formed in the bottom end of the paint spraying disc 9, the lower end of the paint spraying shaft 10 penetrates through the sliding box 11 to be connected with the paint spraying disc 9, sliding grooves 24 matched with the fixed rack 12 are formed in the middle of the two ends of the sliding box 11 and used for ensuring the left and right movement of the sliding box 11, the middle of the upper end of the paint spraying shaft 10 penetrates through a power box 13, the top end of the paint spraying shaft is arranged in a limiting groove 19, the guide post 27 is arranged inside the limiting groove 19, the power blade 25 is arranged outside the paint spraying shaft 10 inside the power box 13, the power blade 25 rotates to drive the paint spraying shaft 10 to rotate synchronously, the paint guiding pump 21 is arranged at the upper end of the top plate 17 and used for guiding external paint into the power box 13 after being pressurized, the paint guiding pump 21 is connected with the paint sucking pipe 22, the paint sucking pipe 22 is connected with a paint bucket, the paint guiding pump 21 is communicated with the reversing valve 20 and used for controlling and switching the one-way conduction of the left air inlet pipe 14 and the right air inlet pipe 15, so that the rotating direction of the power blade 25 is controlled, the left or right moving direction of the sliding box 11 is controlled, the reversing valve 20 is respectively connected with the left air inlet pipe 14 and the right air inlet pipe 15, the paint spraying shaft 10 between the power blades 25 inside the power box 13 is provided with a plurality of paint inlet holes 28 for enabling the paint entering the power box 13 to enter the inside of the paint spraying shaft 10 through the, therefore, circulation is achieved, the other ends of the left air inlet pipe 14 and the right air inlet pipe 15 are connected with the air distribution pipes 16, the air distribution pipes 16 are flush with the two ends of the power blade 25, so that high-pressure paint sprayed out of the air distribution pipes 16 can impact the power blade 25 better to enable the power blade to rotate, and the air distribution pipes 16 are connected to the middles of the two ends of the power box 13 respectively.
Example 2
In another embodiment of the invention, the embodiment is different from the above embodiments in that four corners of the lower end of the fixed base 1 are connected with the buffer columns 3 through the buffer springs 2, the bottom ends of the buffer columns 3 are provided with the buffer pads 4, the lower end of the fixed base 1 is provided with the abdicating grooves matched with the buffer columns 3, and by the arrangement of the technical components, the whole device can not shake in a large range in the working process, so that the reliability of the whole device is further improved.
In the invention, when the paint spraying device works, a workpiece to be painted is placed on the fixed base 1, the workpiece is fixed through the matching between the positioning rod 5 and the positioning plate 6, then the paint guide pump 21 is started, high-pressure paint enters the left air inlet pipe 14 or the right air inlet pipe 15 through a single channel under the action of the reversing valve 20, and further impacts the power blade 25 to enable the paint spraying shaft 10 to rotate clockwise or anticlockwise, meanwhile, the whole paint spraying shaft 10 can also move left or right through the meshing of the rotary gear 23 and the fixed rack 12, the paint is sprayed out of the paint spraying hole 26 at the lower end of the paint spraying disc 9 inside the paint spraying shaft 10, and the uniform paint spraying of the workpiece is realized. The high-pressure paint spraying device is reasonable in structure and novel in design, the paint spraying shaft 10 can move left and right while rotating for paint spraying through the mutual matching of the sliding box 11 and the fixed rack 12, the paint spraying uniformity is greatly improved, and meanwhile the high-pressure paint can also serve as a power source due to the arrangement of the power box 13, so that the cost of the device is further reduced, and the high-pressure paint spraying device is high in practicability and reliability.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (9)

1. The utility model provides a paint spraying apparatus is used in hardware and machinery processing, includes unable adjustment base (1), unable adjustment base (1) upper end both sides erection bracing frame (18), support frame (18) top installation roof (17), its characterized in that, roof (17) downside is equipped with spacing groove (19), installation fixed rack (12) between support frame (18) the middle part, fixed rack (12) middle part is equipped with slide box (11), and slide box (11) inside is equipped with rotary gear (23), and rotary gear (23) mid-mounting sprays paint axle (10), and it is connected with paint spraying tray (9) to spray paint axle (10) lower extreme and pass slide box (11), it passes inside headstock (13) and the top locates spacing groove (19) to spray paint axle (10) outside installation power leaf (25) that are located headstock (13) inside, roof (17) upper end installation draws paint pump (21), draw lacquer pump (21) intercommunication switching-over valve (20), switching-over valve (20) are connected with left intake pipe (14) and right intake pipe (15) respectively, left side intake pipe (14) and right intake pipe (15) other end are connected with gas-distributing pipe (16), and gas-distributing pipe (16) are connected respectively in headstock (13) both ends middle part, are located and are equipped with a plurality of paint feeding holes (28) on painting shaft (10) between the inside power leaf (25) of headstock (13).
2. The paint spraying device for machining hardware mechanical parts, according to claim 1, is characterized in that four corners of the lower end of the fixing base (1) are connected with buffering columns (3) through buffering springs (2), and buffering cushions (4) are mounted at the bottom ends of the buffering columns (3).
3. The paint spraying device for machining of hardware mechanical parts according to claim 1 or 2, wherein the four corners of the upper end of the fixing base (1) are connected with positioning rods (5) in a threaded mode, positioning plates (6) are installed in the middle of the positioning rods (5), positioning frames (7) are installed at the top ends of the positioning rods (5), and clamping rods (8) are installed in the middle of the positioning frames (7).
4. The paint spraying device for machining of hardware mechanical parts, as claimed in claim 1, wherein the interior of the paint spraying shaft (10) is of a hollow structure, the bottom end of the paint spraying shaft (10) is communicated with the paint spraying disc (9), and the bottom end of the paint spraying disc (9) is provided with a plurality of paint spraying holes (26).
5. The paint spraying device for machining hardware mechanical parts, as claimed in claim 1, characterized in that the middle of the two ends of the sliding box (11) is provided with a sliding groove (24) which is matched with the fixed rack (12).
6. The paint spraying device for machining hardware mechanical parts, according to claim 1, is characterized in that the gas distribution pipe (16) is flush with two ends of the power blade (25).
7. The paint spraying device for machining of hardware mechanical parts, according to claim 1, is characterized in that guide columns (27) are installed on two sides of the top end of the power box (13), and the guide columns (27) are arranged inside the limiting groove (19).
8. The paint spraying device for machining of hardware mechanical parts as claimed in claim 1, wherein the paint guide pump (21) is connected with a paint suction pipe (22), and the paint suction pipe (22) is connected with a paint bucket.
9. The paint spraying device for machining of hardware mechanical parts as claimed in claim 2, wherein the lower end of the fixing base (1) is provided with an abdicating groove matched with the buffer column (3).
CN202010432738.0A 2020-05-20 2020-05-20 Paint spraying device for hardware machining Expired - Fee Related CN111515049B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010432738.0A CN111515049B (en) 2020-05-20 2020-05-20 Paint spraying device for hardware machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010432738.0A CN111515049B (en) 2020-05-20 2020-05-20 Paint spraying device for hardware machining

Publications (2)

Publication Number Publication Date
CN111515049A CN111515049A (en) 2020-08-11
CN111515049B true CN111515049B (en) 2021-04-23

Family

ID=71905311

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010432738.0A Expired - Fee Related CN111515049B (en) 2020-05-20 2020-05-20 Paint spraying device for hardware machining

Country Status (1)

Country Link
CN (1) CN111515049B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112547400A (en) * 2020-12-03 2021-03-26 汪利华 Spray even automobile parts paint spraying apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028847A (en) * 1983-07-25 1985-02-14 Mazda Motor Corp Painting device of automotive body
CN204876885U (en) * 2015-07-08 2015-12-16 江山市飞龙进出口有限公司 Building entrance guard device
CN208695360U (en) * 2018-06-06 2019-04-05 芜湖艾蔓设备工程有限公司 A kind of novel automobile hub spray equipment
CN110064549B (en) * 2019-03-18 2021-11-16 新昌县乐意工艺品有限公司 Spraying processing equipment for plastic craft products
CN210357741U (en) * 2019-05-31 2020-04-21 朱素影 Rotary type woodwork processing is with painting device

Also Published As

Publication number Publication date
CN111515049A (en) 2020-08-11

Similar Documents

Publication Publication Date Title
CN110064549B (en) Spraying processing equipment for plastic craft products
CN112452590A (en) Automobile surface coating device and using method
CN111111977A (en) Paint spraying device for hardware machining
CN111515049B (en) Paint spraying device for hardware machining
CN109772623A (en) Building board paint spraying device
CN220941392U (en) Multi-nozzle spraying equipment
CN110614178A (en) Paint spraying apparatus is used in hardware production and processing
CN112387489B (en) Rust-proof spraying equipment for cold-rolled steel pipe and using method of rust-proof spraying equipment
CN222112267U (en) A kind of automobile bumper spraying equipment with adjustable spraying direction
CN213004867U (en) Clamping device for paint spraying purifier workbench
CN220496691U (en) Steel construction device of varnishing
CN219943341U (en) Environment-friendly industrial production automatic spraying device
CN210357739U (en) Horizontal migration formula automatic spraying equipment
CN213727254U (en) Hub tracing and edge spraying integrated machine
CN108745685A (en) A kind of industrial products metal outer rim surface spraying mechanism
CN211436716U (en) A semi-automatic spraying device for suit door production
CN220004521U (en) Metal surface spraying and positioning device
CN218925101U (en) Automatic paint spraying device for luggage handle
CN214390796U (en) Spraying workshop with built-in multidirectional spraying uniform structure
CN112676078A (en) Spraying machine capable of spraying at multiple angles and angle adjusting method thereof
CN221063284U (en) Coating processing is with upset machine
CN221619817U (en) Paint spraying device for building engineering fitment panel
CN221433542U (en) Environment-friendly paint spraying device for machining electromechanical products
CN214215196U (en) A simple machine frame coding console
CN220590425U (en) Modular processing tool capable of lifting, switching and positioning

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20210330

Address after: 221700 intelligent terminal Industrial Park, Fengxian Economic Development Zone, Xuzhou City, Jiangsu Province

Applicant after: Fengxian wisdom automation equipment Research Institute Co.,Ltd.

Address before: 264006 room 2011, building 4, 86 Taishan Road, Yantai Economic and Technological Development Zone, Shandong Province

Applicant before: Yantai Deju Renhe Intelligent Technology Co.,Ltd.

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210423

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