CN113532981B - Fiber balance twisting auxiliary device with adjustable balance weight and related experimental method - Google Patents
Fiber balance twisting auxiliary device with adjustable balance weight and related experimental method Download PDFInfo
- Publication number
- CN113532981B CN113532981B CN202110669115.XA CN202110669115A CN113532981B CN 113532981 B CN113532981 B CN 113532981B CN 202110669115 A CN202110669115 A CN 202110669115A CN 113532981 B CN113532981 B CN 113532981B
- Authority
- CN
- China
- Prior art keywords
- balance
- fiber
- twisting
- swing rod
- small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 73
- 238000002474 experimental method Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000002657 fibrous material Substances 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000004904 shortening Methods 0.000 claims abstract description 8
- 238000007667 floating Methods 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims abstract description 3
- 230000005484 gravity Effects 0.000 claims abstract description 3
- 230000008859 change Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 8
- 210000003205 muscle Anatomy 0.000 description 6
- 238000011160 research Methods 0.000 description 4
- 238000007306 functionalization reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000004118 muscle contraction Effects 0.000 description 1
- 210000001087 myotubule Anatomy 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention discloses a fiber balance twisting auxiliary device with an adjustable balance weight and a related experimental method, and belongs to the technical field of fiber material functional treatment. The whole mechanism consists of: the balance swing rod and the small balance swing rod form a set of telescopic mechanism, and the requirements of fiber twisting shortening are met. And the swinging rods are respectively balanced by using the floating blocks, so that the influence of external force on the twisting effect is removed. The connecting piece and the counterweight ensure vertical centering through the action of gravity. The invention can effectively avoid external force interference, accurately carry out counterweight twisting on fiber materials, realize self-centering of the whole fiber twisting shortening process, and ensure that a sample has no disturbance in the twisting process, thereby improving the sample preparation efficiency and reducing the error of experimental results.
Description
Technical Field
The invention relates to a matching auxiliary device of a twisting machine, in particular to an experimental device used in twisting fiber materials. The invention also relates to a method for carrying out fiber twisting experiments by using the device, belonging to the technical field of fiber material functionalization treatment.
Background
At the present stage, the research on bionics is becoming more and more popular in the scientific research field, and research, development, optimization and the like of new technologies and new materials are realized by simulating and learning various forms, activities and the like of organisms in nature. For bionic study on the movement of organisms, the following findings are found: the motion of organisms is mostly driven by muscles, and the force generation of the muscles is realized by the controllable contraction of muscle fibers, which is very attractive, and artificial muscles are the hot spot of scientific research all the time.
Artificial muscle (also called Artificial muscle) can change the internal structure of a material to produce recoverable movements such as stretching, twisting, and expanding under external stimulation (light, electricity, heat, magnetism, pressure, solvent, humidity, etc.). The common artificial muscle is prepared by adopting fiber materials, and the fibers are twisted to form a spring-like winding and coiling structure, namely, the fibers are subjected to functional treatment.
The existing twisting equipment can only rotate and twist fibers to fix one end of a fiber sample, and the other end of the fiber sample needs to be positioned by an experimenter with the help of other clamping instruments. This method presents a series of problems during the functionalization process: (1) the two ends of the fiber are difficult to center, and much time is usually consumed for actual adjustment; and (2) the twisting of the fiber needs to be realized by fixing one rotating end of the fiber, but the whole fiber is shortened in the twisting process, so that the other end of the fiber needs to be fixed, and the fiber can be centered and axially reciprocate back and forth. (3) actually, due to the experimental requirements, the fibers need to be weighted in the twisting process, so that the difficulty in fixing the other end is increased. The existing preparation method can seriously affect the flexibility of fiber sample experiments, easily causes the related mechanical properties of the fiber samples to deviate, and is not suitable for preparing fine experimental materials. For materials such as carbon nanotube fibers, due to the structure of the materials, the twisting process is prone to stress unevenness, and irreversible damage such as knotting occurs at the twisting and coiling stage. The invention can effectively and accurately carry out counterweight twisting on the fiber material under the condition of the original fiber auxiliary twisting, realizes the self-centering of the whole fiber twisting shortening process, greatly shortens the time of fiber material functional processing and ensures that a sample has no micro disturbance in the twisting process, thereby reducing the experimental result error generated by sample processing and obtaining the performance of the material more accurately.
Disclosure of Invention
The invention comprises the following steps: the fiber balance twisting auxiliary device with the adjustable balance weight can realize balance weight twisting of fiber materials, and ensures that the twisting structure and the mechanical property of the materials are not influenced by the sample preparation process, thereby obtaining more accurate experimental data.
An adjustable-weight fiber balance twisting auxiliary device, as shown in figure 1, is characterized in that: the auxiliary device is characterized in that a bolt (3), a rotating shaft (4) and a stand (5) are arranged above a base (14) of the auxiliary device, a front circular through hole and a rear circular through hole are formed in a device formed by the stand (5) and the base (14), two bearings are embedded into the front circular through hole and the rear circular through hole, the middle supporting end of a balance swing rod (2) is arranged in an inner ring of the bearing, and the balance swing rod (2) can swing back and forth relative to the stand (5). One end of the balance swing rod (2) is provided with a balance weight (1), and the connection with adjustable back and forth is realized at one end of the balance swing rod (2) by means of threads. The other end of the balance swing rod (2) is matched with the sleeve (7), the end part of the balance swing rod is fastened by the adjusting nut (6), the sleeve (7) can be limited to rotate around one end of the balance swing rod (2), the position is limited by the pin, and axial movement can be limited. The other end of the sleeve (7) is matched with the bearing inner ring, the bearing outer ring is matched with the small balance swing rod (8), and the small balance swing rod (8) can swing back and forth relative to one end of the sleeve (7). One end of the small balance swing rod (8) is provided with a floating block (9), and the connection with adjustable back and forth is realized at one end of the small balance swing rod (8) by means of threads. The other end of the small balance swing rod (8) is matched with the small sleeve (11), and the end part of the small balance swing rod is fastened by an adjusting nut (10), so that the small sleeve (11) can be limited to rotate around one end of the small balance swing rod (8), the small balance swing rod is limited by a pin, and the axial movement can also be limited. The weight (13) is hung on the big hook of the connecting piece (12), the small hook at the other end is used for fixing the fiber, and the whole connecting piece (12) is in clearance fit with the small sleeve (11) and can rotate. The fiber material is fixed on a small hook of the rotating shaft (4), and the other end of the fiber material is connected with the twisting machine to transmit the rotating speed from top to bottom. The bolt (3) is used for limiting the swing of the balance swing rod (2) before balance adjustment.
The experimental method of the fiber balance twisting auxiliary device with the adjustable balance weight comprises the following operation steps: for a plurality of strands of fibers needing twisting, the size of the sleeves (7) (11) is adjusted according to the size; for longer fibers, the sleeve (7) and the sleeve (11) can be moved outwards at the same time, the fibers are fixed between the rotating shaft (4) and the connecting piece (12), and vertical centering of the fibers is realized by means of a counterweight (13); likewise, for shorter fibers, the sleeve (7) and the sleeve (11) can be moved inwards at the same time, and the whole device is provided with the balance weight (9) and the balance weight (1) for adjusting the balance of the small balance swing rod (8) and the balance swing rod (2). When the twisting of the fiber is shortened, the device and the fiber can be flexibly fixed without additional external force by means of the rotation angles of the small balance swing rod (8) and the balance swing rod (2).
The fiber balance twisting auxiliary device with the adjustable balance weight and the related experimental method can effectively avoid external force, accurately carry out balance weight twisting on fiber materials, realize self-centering of the whole fiber twisting shortening process, and ensure that a sample has no disturbance in the twisting process, thereby reducing experimental result errors generated by sample treatment, obtaining the performance of the materials more accurately, and having irreplaceable advantages for experiments.
Compared with the traditional experimental method, the invention has the following beneficial effects:
1. the self-centering of the whole fiber twisting shortening process is realized, the sample is ensured not to be disturbed in the twisting process, and the fiber functionalization treatment efficiency is greatly improved.
2. The fixed form of fibre needs in twisting process can be guaranteed, promptly, the fibre whole can shorten at the in-process of twisting, can guarantee the fixed centering of fibre, need not produce the interference to the shortening of fibre again, can change along with the change of fibre length.
3. The fiber material is accurately twisted by the balance weight, and the interference of external force is effectively balanced.
4. The length of the balance swing rod can be adjusted, and the twisting device is suitable for twisting of fiber materials with various lengths.
Drawings
FIG. 1 is an isometric view of an adjustable weighted fiber balance twisting aid.
FIG. 2 is a sample fixing diagram of a fiber balance twisting auxiliary device with adjustable weights.
FIG. 3 is a sample twist diagram of an adjustable weighted fiber balance twist aid.
Detailed Description
The fiber balance twisting auxiliary device with adjustable weight and the related experimental method of the invention are further described in detail with reference to the attached drawings 1 and 2.
Fig. 1 shows a side view of the fiber balance twisting auxiliary device with adjustable weight, which is characterized in that: the device comprises a floating weight (1), a balance swing rod (2), a bolt (3), a rotating shaft (4), a vertical frame (5), an adjusting nut (6), a sleeve (7), a small balance swing rod (8), a floating weight (9), an adjusting nut (10), a small sleeve (11), a connecting piece (12), a counterweight (13) and a base (14). Wherein the adjusting mechanism consisting of the adjusting nut (6), the sleeve (7), the adjusting nut (10) and the small sleeve (11) is suitable for twisting fibers with different lengths and short sizes. The balance swing rod (2) and the small balance swing rod (8) form a set of telescopic mechanism, and the requirements of fiber twisting shortening are met. The balance weight (1) and the balance weight (9) balance the swing rod (2) and the small balance swing rod (8) respectively, and the influence of external force on the twisting effect is removed. The connecting piece (12) and the counterweight (13) are vertical through the gravity action, and the fiber centering requirement is met.
The experimental method comprises the following specific steps: firstly, the bolt (3) fixes the balance swing rod. For a fiber sample with a known size, the adjusting nut (6), the sleeve (7), the adjusting nut (10) and the small sleeve (11) are matched and adjusted to be proper in length. One end of the fiber is fixed to a connecting piece (12) and is installed on a small sleeve (11), and a balance weight (9) is adjusted, so that the small balance swing rod (8) is in a state of balance at two ends. Then the other end of the fiber is fixed on the rotating shaft (4), and a weight of the required balance weight is hung on the connecting piece (12). At this point the system is still balanced due to the pulling of the fibers. And finally, taking out the bolt (3), and finely adjusting the balance (1) to keep the balance of the mechanism until twisting.
Claims (6)
1. The utility model provides a balanced twisting auxiliary device of fibre of adjustable counter weight which characterized in that: a bolt (3), a rotating shaft (4) and a stand (5) are arranged above a base (14) of the auxiliary device, a device consisting of the stand (5) and the base (14) is provided with a front round through hole and a rear round through hole, two bearings are embedded in the front round through hole and the rear round through hole, the middle supporting end of a balance swing rod (2) is arranged in an inner ring of the bearing, and the balance swing rod (2) can swing back and forth relative to the stand (5); one end of the balance swing rod (2) is provided with a balance weight (1), and the connection of which can be adjusted back and forth is realized at one end of the balance swing rod (2) by means of threads; the other end of the balance swing rod (2) is matched with the sleeve (7), and the end part of the balance swing rod is fastened by an adjusting nut (6), so that the sleeve (7) can be limited to rotate around one end of the balance swing rod (2), is limited by a pin, and can be limited to move axially; the other end of the sleeve (7) is matched with the bearing inner ring, the bearing outer ring is matched with the small balance swing rod (8), and the small balance swing rod (8) can swing back and forth relative to one end of the sleeve (7); one end of the small balance swing rod (8) is provided with a balance weight (9), and the connection of the small balance swing rod (8) with adjustable back and forth is realized by the aid of threads; the other end of the small balance swing rod (8) is matched with the small sleeve (11), and the end part of the small balance swing rod is fastened by an adjusting nut (10), so that the small sleeve (11) can be limited to rotate around one end of the small balance swing rod (8), limited by a pin, and limited to move axially; the weight (13) is hung on the big hook of the connecting piece (12), the small hook at the other end is used for fixing fiber, and the whole connecting piece (12) is in clearance fit with the small sleeve (11) and can rotate; the fiber material is fixed on a small hook of the rotating shaft (4), and the other end of the fiber material is connected with the twisting machine to transmit the rotating speed from top to bottom; the bolt (3) is used for limiting the swing of the balance swing rod (2) before balance adjustment.
2. The fiber balance twisting auxiliary device with adjustable weight according to claim 1, wherein: the sleeve (7) can move along the balance swing rod (2) through the adjusting nut (6) to realize twisting of fiber materials with different lengths, and the small sleeve (11) can move along the small balance swing rod (8) through the adjusting nut (10) to adapt to twisting of fiber materials with various lengths.
3. The fiber balance twisting auxiliary device with adjustable weight according to claim 1, wherein: the balance swing rod (2), the vertical frame (5) and the small balance swing rod (8) form a set of telescopic mechanism, so that the fiber is ensured to be fixedly centered in the twisting process, the fiber is not interfered in the shortening process of the twisting process, and the fiber can change along with the change of the length of the fiber.
4. The fiber balance twisting auxiliary device with adjustable weight according to claim 1, wherein: balance weight (1) on the pendulum rod (2) and balance weight (9) on little balanced pendulum rod (8), can effectually balance the interference of falling external force, accurate carry out the counter weight twisting to the fibre.
5. The fiber balance twisting auxiliary device with adjustable weight according to claim 1, wherein: the connecting piece (12) and the counterweight (13) are kept vertical through the action of gravity, so that the self-centering in the fiber twisting process is realized, the fibers are ensured not to be interfered in the twisting process, and the fiber functional treatment efficiency is improved.
6. The method for carrying out fiber twisting experiments by using the fiber balance twisting auxiliary device with the adjustable balance weight as claimed in claim 1, is characterized in that: for fiber materials with different sizes, a balance swing rod is fixed through a bolt (3), a sleeve (7) and a small sleeve (11) are adjusted to be proper in length through an adjusting nut (6) and an adjusting nut (10), one end of the fiber material is fixed onto a connecting piece (12), the position of a floating weight (9) on the small balance swing rod (8) is adjusted through threads, the small balance swing rod (8) is in a state of balance at two ends, one end of the fiber is fixed onto a rotating shaft (4), a balance weight (13) is hung at the position of the connecting piece (12), at the moment, the system is still in a state of balance due to dragging and pulling of the fiber, the bolt (3) is taken out, the floating weight (1) is finely adjusted, and the twisting auxiliary device is kept balanced until the twisting of the fiber material is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110669115.XA CN113532981B (en) | 2021-06-17 | 2021-06-17 | Fiber balance twisting auxiliary device with adjustable balance weight and related experimental method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110669115.XA CN113532981B (en) | 2021-06-17 | 2021-06-17 | Fiber balance twisting auxiliary device with adjustable balance weight and related experimental method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113532981A CN113532981A (en) | 2021-10-22 |
| CN113532981B true CN113532981B (en) | 2022-03-29 |
Family
ID=78125056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110669115.XA Expired - Fee Related CN113532981B (en) | 2021-06-17 | 2021-06-17 | Fiber balance twisting auxiliary device with adjustable balance weight and related experimental method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113532981B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216771A (en) * | 2021-12-07 | 2022-03-22 | 北京工业大学 | Carbon nanotube fiber twisting experiment table and test experiment method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007119747A1 (en) * | 2006-04-13 | 2007-10-25 | Toyo Boseki Kabushiki Kaisha | Process for continuously producing fine carbon fiber twine, apparatus therefor and fine carbon fiber twine produced by the process |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3817493A1 (en) * | 1988-05-21 | 1989-11-30 | Fritz Stahlecker | SPINNING MACHINE WITH A VARIETY OF SPINNING DEVICES TO GENERATE AS REPLACEMENT SPOOLS FOR A TWISTING REEL |
| CN2320629Y (en) * | 1995-11-09 | 1999-05-26 | 山东省莱州市电子仪器厂 | Pre-tension device for single yarn strength tester |
| GB2353046B (en) * | 1999-08-10 | 2003-07-30 | Technology Finance Corp | Preparing textile fibres for testing |
| US6340522B1 (en) * | 2000-07-13 | 2002-01-22 | Wr Grace & Co.-Conn. | Three-dimensional twisted fibers and processes for making same |
| CN102453986B (en) * | 2010-10-21 | 2013-12-04 | 盟鑫工业股份有限公司 | Drawing and twisting equipment |
| CN202321808U (en) * | 2011-08-25 | 2012-07-11 | 颜世强 | Variable-tension yarn tensioner |
| WO2014022667A2 (en) * | 2012-08-01 | 2014-02-06 | The Board Of Regents, The University Of Texas System | Coiled and non-coiled twisted nanofiber yarn and polymer fiber torsional and tensile actuators |
| CN103883289B (en) * | 2014-04-19 | 2016-04-20 | 长江大学 | A kind of beam-pumping unit dynamic equilibrium intelligent regulating device |
| CN104763384A (en) * | 2015-04-03 | 2015-07-08 | 高洪丽 | Oscillating bar tower type intelligent oil pumping unit |
| JP6534134B1 (en) * | 2017-07-27 | 2019-06-26 | パナソニックＩｐマネジメント株式会社 | METHOD OF DRIVING ACTUATOR, ACTUATOR, AND METHOD OF MANUFACTURING ACTUATOR |
| CN109115583A (en) * | 2018-11-16 | 2019-01-01 | 中安信科技有限公司 | A kind of high-performance carbon fibre multifilament automatic sample preparing device and method |
| CN109406387A (en) * | 2018-11-29 | 2019-03-01 | 深圳出入境检验检疫局工业品检测技术中心 | A kind of frictional coefficient of fiber test device |
| CN213417112U (en) * | 2020-09-30 | 2021-06-11 | 宜昌经纬纺机有限公司 | Sectional type multi-strand glass fiber one-step twisting system |
-
2021
- 2021-06-17 CN CN202110669115.XA patent/CN113532981B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007119747A1 (en) * | 2006-04-13 | 2007-10-25 | Toyo Boseki Kabushiki Kaisha | Process for continuously producing fine carbon fiber twine, apparatus therefor and fine carbon fiber twine produced by the process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113532981A (en) | 2021-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106829579B (en) | A kind of wrap-up for PVC artificial leather production and processing | |
| CN110373776B (en) | Multi-stimulus response driver with core-shell structure based on carbon nano composite fiber | |
| CN113532981B (en) | Fiber balance twisting auxiliary device with adjustable balance weight and related experimental method | |
| CN103115774B (en) | Axially with radial compound load bearings test unit | |
| CN111238761B (en) | Coupling free vibration wind tunnel test device with adjustable torsional vibration frequency ratio and vertical bending vibration frequency ratio | |
| CN104294434A (en) | Spring-shaped carbon nano tube fiber and preparing method and purpose thereof | |
| CN108724163A (en) | A kind of seven degrees of freedom copy man mechanical arm of pneumatic muscles driving | |
| CN105328710A (en) | Multi-degree-of-freedom mechanical arm based on steel wire transmission | |
| CN107546033A (en) | A kind of toroidal coil winding machine | |
| CN212110919U (en) | Concrete axle draws testing arrangement | |
| CN203845575U (en) | Binding wire winding device | |
| CN207243168U (en) | The wrapping machine of adjustable winding chemical fiber wire paper web | |
| CN114942195A (en) | Device for measuring torsion force of artificial blood vessel/stent and use method thereof | |
| CN106706411B (en) | Micro centrifuge experimental provision and research method towards 3 D-printing geotechnical model | |
| CN210361305U (en) | Four-degree-of-freedom chewing mechanism driven by rope | |
| CN208287442U (en) | A kind of basketball fitness training device | |
| CN106596305A (en) | Detection system and detection method for fatigue cracks under high-frequency vibration | |
| CN114654500B (en) | Preparation method of double-response carbon fiber-based mixed yarn artificial muscle driver | |
| CN109781307A (en) | A kind of coaxial centring means | |
| CN108002112A (en) | Balance modification method and rotary part | |
| CN101482414A (en) | Tension-adjustable double-filament parallel mounting apparatus used for optic fiber gyroscope | |
| CN217520934U (en) | Device for measuring torsion of artificial blood vessel/stent | |
| CN205474147U (en) | Fiber pretreatment device | |
| CN209802877U (en) | Double-end clamping and three-bending method fiber material bending resistance testing device | |
| CN104807582B (en) | A kind of torsion detection tooling |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220329 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |