CN112212911A - Micro-pressure alternating testing machine and testing method - Google Patents
Micro-pressure alternating testing machine and testing method Download PDFInfo
- Publication number
- CN112212911A CN112212911A CN202011082143.3A CN202011082143A CN112212911A CN 112212911 A CN112212911 A CN 112212911A CN 202011082143 A CN202011082143 A CN 202011082143A CN 112212911 A CN112212911 A CN 112212911A
- Authority
- CN
- China
- Prior art keywords
- pressure
- micro
- air cylinder
- tester
- ball screw
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
Abstract
The invention discloses a micro-pressure alternation testing machine and a testing method, wherein the testing machine comprises a power mechanism and an air cylinder, the power mechanism is in transmission connection with a piston rod of the air cylinder, an air chamber on one side of a piston of the air cylinder is communicated with a debugging mechanism through a pipeline, and the debugging mechanism comprises a pressure sensor, a pressure gauge and an electromagnetic valve. The invention greatly reduces the equipment cost by using the mode that the actuating unit drives the cylinder piston rod to move, and has simple operating system; the invention can not only produce pressure but also control pressure, and is very convenient to use; the invention adopts the compression and stretching closed space to control the pressure, so that the extremely small pressure can be controlled; according to the invention, the piston rod of the air cylinder is set to be zero pressure when in the middle position, positive pressure can be generated by compressing the air cylinder leftwards, negative pressure can be generated by stretching the air cylinder rightwards, the positive and negative pressure switching transition point basically has no pressure fluctuation, the pressure alternating linearity is very good, and sine waves can be realized.
Description
Technical Field
The invention relates to the technical field of pressure alternation machines, in particular to a micro-pressure alternation testing machine and a testing method.
Background
The existing positive and negative pressure alternating equipment is shown in fig. 1 and comprises a set of positive pressure control system and a set of negative pressure control system. The positive and negative pressure alternation is realized by controlling the switching of the two sets of pressure control systems. When the system is used, the system starting controller controls the positive-pressure electric proportional valve 1-2 to output an alternating upper limit pressure value, and the controller controls the negative-pressure electric proportional valve 1-6 to output an alternating lower limit pressure value. And opening the positive pressure electromagnetic valve 1-3, closing the negative pressure electromagnetic valve 1-7, allowing the gas to enter the pipeline through the positive pressure gas source 1-1, and increasing the pressure in the pipeline to the upper limit value of pressure alternation. After the pressure rise time is up, the positive pressure electromagnetic valve 1-3 is closed, the negative pressure electromagnetic valve 1-7 is opened, the gas enters the pipeline through the negative pressure gas source 1-5, and the pressure in the pipeline is reduced to the pressure alternation lower limit value. The repeated actions form positive and negative pressure alternation.
The existing positive and negative pressure alternating equipment has the following defects: 1. two sets of pressure control systems are adopted, the lowest accurate pressure control of the positive pressure control system can only reach 50KPa, the lowest accurate pressure control of the negative pressure control system can only reach-50 KPa, and accurate pressure control can not be carried out within the range from-50 KPa to 50 KPa; 2. when positive and negative pressure is switched, a pressure control system needs to be switched, so that pressure jitter is not linear during a pressure alternating test; 3. a positive pressure air source and a negative pressure air source are required to be connected externally.
Disclosure of Invention
The invention aims to provide a micro-pressure alternating testing machine and a testing method, which have the advantages of stable positive and negative pressure regulation, high control precision, simple operation and reduced equipment cost.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a micro-pressure alternation testing machine which comprises a power mechanism and an air cylinder, wherein the power mechanism is in transmission connection with a piston rod of the air cylinder, an air chamber on one side of a piston of the air cylinder is communicated with a debugging mechanism through a pipeline, and the debugging mechanism comprises a pressure sensor, a pressure gauge and an electromagnetic valve.
Preferably, the power mechanism is in transmission connection with a piston rod of the cylinder through a transmission mechanism.
Preferably, the transmission mechanism comprises a ball screw and a connecting plate, one end of the ball screw is in transmission connection with the output end of the power mechanism, the other end of the ball screw penetrates through the connecting plate and is in threaded connection with the connecting plate, and the connecting plate is fixedly connected with the piston rod of the air cylinder.
Preferably, the power mechanism and the cylinder are fixedly arranged on the mounting plate, and a first through hole for the power output end of the power mechanism to pass through and a second through hole for the piston rod of the cylinder to pass through are formed in the mounting plate.
Preferably, the ball screw fixing device further comprises a limiting plate and a plurality of guide rods, a third through hole for the ball screw to pass through is formed in the limiting plate, the connecting plate penetrates through the guide rods and is connected with the guide rods in a sliding mode, one end of each guide rod is fixedly connected with the limiting plate, and the other end of each guide rod is fixedly connected with the mounting plate.
Preferably, the free end of the ball screw is provided with a ball screw supporting seat, and the ball screw supporting seat is located on the outer side of the limiting plate.
Preferably, the power mechanism is a stepping motor.
Preferably, the number of the pressure gauges is two.
The invention also provides a test method adopting the micro-pressure alternating tester, which comprises the following steps: s1: range selection is carried out;
s2: setting the alternating times;
s3: starting a micro-pressure alternating tester, and if pressure leakage is detected, giving an alarm by a system and automatically releasing pressure;
s4: and if the pressure leakage is not detected, completing the alternating test, releasing the pressure and shutting down the machine.
Compared with the prior art, the invention has the following technical effects:
1. the invention greatly reduces the equipment cost by using the mode that the actuating unit drives the cylinder piston rod to move, and has simple operating system;
2. the invention can not only produce pressure but also control pressure, and is very convenient to use;
3. the invention adopts the compression and stretching closed space to control the pressure, so that the extremely small pressure can be controlled;
4. according to the invention, the piston rod of the air cylinder is set to be zero pressure when in the middle position, positive pressure can be generated by compressing the air cylinder leftwards, negative pressure can be generated by stretching the air cylinder rightwards, the positive and negative pressure switching transition point basically has no pressure fluctuation, the pressure alternating linearity is very good, and sine waves can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a prior art pressure alternator;
FIG. 2 is a schematic view of the structure of a micro-pressure alternating tester of the present invention;
FIG. 3 is a first schematic diagram of the power mechanism and the cylinder transmission in the present invention;
FIG. 4 is a second schematic diagram of the power mechanism and cylinder transmission according to the present invention;
FIG. 5 is a flow chart of a pressure alternation test using the micro-pressure alternation tester of the present invention;
wherein: 1-1: positive pressure gas source, 1-2: positive pressure electric proportional valve, 1-3: positive pressure solenoid valve, 1-4: pressure gauge, 1-5: negative pressure air source, 1-6: negative pressure electric proportional valve, 1-7: negative pressure solenoid valve, 2-1: power mechanism, 2-2: cylinder, 2-3: pressure sensor, 2-4: electromagnetic valve, 2-5: connecting plate, 2-6: mounting plate, 2-7: limiting plate, 2-8: ball screw, 2-9: guide rod, 2-10: ball supporting seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a micro-pressure alternating testing machine and a testing method, which have the advantages of stable positive and negative pressure regulation, high control precision, simple operation and reduced equipment cost.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 2-4: the embodiment provides a micro-pressure alternation testing machine which comprises a power mechanism 2-1 and an air cylinder 2-2, wherein the power mechanism 2-1 is in transmission connection with a piston rod of the air cylinder 2-2, an air chamber on one side of a piston of the air cylinder 2-2 is communicated with a debugging mechanism through a pipeline, and the debugging mechanism comprises a pressure sensor 2-3, a pressure gauge 1-4 and an electromagnetic valve 2-4.
Specifically, in the embodiment, the power mechanism 2-1 is in transmission connection with the piston rod of the cylinder 2-2 through a transmission mechanism. The transmission mechanism comprises a ball screw 2-8 and a connecting plate 2-5, one end of the ball screw 2-8 is in transmission connection with the output end of the power mechanism 2-1, the other end of the ball screw 2-8 penetrates through the connecting plate 2-5 and is in threaded connection with the connecting plate 2-5, the connecting plate 2-5 is fixedly connected with a piston rod of the air cylinder 2-2, specifically, the size of the front end of the piston rod of the air cylinder 2-2 is smaller than that of a rod body of the piston rod to form a step, a mounting hole matched with the size of the front end of the piston rod is formed in the connecting plate 2-5, and the front end of the piston rod penetrates through the connecting plate 2-5 and fixes the. In the embodiment, the power mechanism 2-1 drives the ball screw 2-8 to rotate, and the connecting plate 2-5 moves along the axial direction of the ball screw 2-8, so as to drive the piston rod of the cylinder 2-2 to stretch and retract, thereby realizing the output of positive and negative pressure.
The power mechanism further comprises a mounting plate 2-6, the power mechanism 2-1 and the air cylinder 2-2 are fixedly arranged on the mounting plate 2-6, and a first through hole for the power output end of the power mechanism 2-1 to penetrate through and a second through hole for the piston rod of the air cylinder 2-2 to penetrate through are formed in the mounting plate 2-6. The size of the first through hole is larger than that of the power output end of the power mechanism 2-1. The second through hole is fixedly connected with the cylinder body of the cylinder 2-2.
The embodiment also comprises limiting plates 2-7 and a plurality of guide rods 2-9, in the embodiment, four guide rods 2-9 are respectively positioned at four corners of the connecting plate 2-5, the limiting plates 2-7 are provided with third through holes for the ball screws 2-8 to pass through, the size of the third through holes is larger than the diameter of the ball screws 2-8, the connecting plate 2-5 is arranged on the guide rods 2-9 in a penetrating manner and is connected with the guide rods 2-9 in a sliding manner, one end of each guide rod 2-9 is fixedly connected with the limiting plate 2-7, the other end of each guide rod 2-9 is fixedly connected with the mounting plate 2-6, the guide rods 2-9 and the limiting plates 2-7 or the mounting plate 2-6 are fixed through a mounting seat, the mounting seat is fixedly connected with the limiting plates 2-7 or the mounting plate 2-6 through bolts, the installation seat clamps the guide rods 2-9 through bolts, and then the guide rods 2-9 are fixedly installed. The free end of the ball screw 2-8 is provided with a ball screw support seat 2-10, the ball screw support seat 2-10 is positioned on the outer side of the limiting plate 2-7, and the size of the ball screw support seat 2-10 is larger than that of the third through hole.
In this embodiment, the power mechanism 2-1 is a stepping motor. Two pressure gauges 1-4 are provided.
When the working of the embodiment, firstly, the electromagnetic valves 2-4 are opened to enable the pipeline to be communicated with the atmosphere; then the stepping motor drives the ball screw 2-8 to rotate, the connecting plate 2-5 drives the cylinder 2-2 piston rod to move to the middle position of the cylinder 2-2 and then the electromagnetic valve 2-4 is closed, as shown in figure 2, the stepping motor rotates forward to drive the cylinder 2-2 piston rod to move leftwards to compress the volume of the closed space of the cylinder body, at the moment, the positive pressure gradually rises, when the pressure sensor 2-3 detects that the pressure in the pipeline reaches the upper alternating limit, the stepping motor starts to rotate reversely to drive the cylinder 2-2 piston rod to move rightwards, the pressure in the pipeline gradually decreases to zero, the pressure continues to move rightwards to gradually rise the negative pressure in the pipeline, when the pressure sensor 2-3 detects that the pressure in the pipeline reaches the lower alternating limit, the stepping motor starts to rotate forward.
In the embodiment, the equipment cost is greatly reduced by using the mode that the power mechanism 2-1 drives the piston rod of the air cylinder 2-2 to move, and the operation system is simple; the embodiment can not only produce pressure, but also control the pressure, and is very convenient to use; in the embodiment, the pressure is controlled by compressing and stretching the closed space, so that the extremely small pressure can be controlled; in the embodiment, the piston rod of the cylinder 2-2 is set to be zero pressure when in the middle position, positive pressure can be generated by compressing the cylinder 2-2 leftwards, negative pressure can be generated by stretching the cylinder 2-2 rightwards, the positive and negative pressure switching transition point basically has no pressure fluctuation, the pressure alternating linearity is very good, and sine waves can be realized.
Example two:
as shown in fig. 5, the present embodiment provides a testing method using the micro-pressure alternation tester of the first embodiment, including the following steps: s1: range selection is carried out;
s2: setting the alternating times;
s3: starting a micro-pressure alternating tester, and if pressure leakage is detected, giving an alarm by a system and automatically releasing pressure;
s4: and if the pressure leakage is not detected, completing the alternating test, releasing the pressure and shutting down the machine.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. A micropressure pressure alternation tester is characterized in that: the debugging mechanism comprises a power mechanism and a cylinder, wherein the power mechanism is in transmission connection with a piston rod of the cylinder, an air chamber on one side of a piston of the cylinder is communicated with the debugging mechanism through a pipeline, and the debugging mechanism comprises a pressure sensor, a pressure gauge and an electromagnetic valve.
2. The micro-pressure alternation tester as claimed in claim 1, wherein: the power mechanism is in transmission connection with the piston rod of the air cylinder through a transmission mechanism.
3. The micro-pressure alternation tester as claimed in claim 2, wherein: the transmission mechanism comprises a ball screw and a connecting plate, one end of the ball screw is in transmission connection with the output end of the power mechanism, the other end of the ball screw penetrates through the connecting plate and is in threaded connection with the connecting plate, and the connecting plate is fixedly connected with a piston rod of the air cylinder.
4. The micro-pressure alternation tester as claimed in claim 3, wherein: the power mechanism and the air cylinder are fixedly arranged on the mounting plate, and a first through hole for the power output end of the power mechanism to pass through and a second through hole for the piston rod of the air cylinder to pass through are formed in the mounting plate.
5. The micro-pressure alternation tester as claimed in claim 4, wherein: the ball screw fixing device is characterized by further comprising a limiting plate and a plurality of guide rods, a third through hole used for the ball screw to penetrate through is formed in the limiting plate, the connecting plate penetrates through the guide rods and is in sliding connection with the guide rods, one end of each guide rod is fixedly connected with the limiting plate, and the other end of each guide rod is fixedly connected with the mounting plate.
6. The micro-pressure alternation tester as claimed in claim 5, wherein: the free end of the ball screw is provided with a ball screw supporting seat, and the ball screw supporting seat is located on the outer side of the limiting plate.
7. The micro-pressure alternation tester as claimed in claim 1, wherein: the power mechanism is a stepping motor.
8. The micro-pressure alternation tester as claimed in claim 1, wherein: the number of the pressure gauges is two.
9. A test method using the micro-pressure alternation tester as claimed in any one of claims 1 to 8, wherein: the method comprises the following steps:
s1: range selection is carried out;
s2: setting the alternating times;
s3: starting a micro-pressure alternating tester, and if pressure leakage is detected, giving an alarm by a system and automatically releasing pressure;
s4: and if the pressure leakage is not detected, completing the alternating test, releasing the pressure and shutting down the machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082143.3A CN112212911A (en) | 2020-10-12 | 2020-10-12 | Micro-pressure alternating testing machine and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082143.3A CN112212911A (en) | 2020-10-12 | 2020-10-12 | Micro-pressure alternating testing machine and testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112212911A true CN112212911A (en) | 2021-01-12 |
Family
ID=74053223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011082143.3A Pending CN112212911A (en) | 2020-10-12 | 2020-10-12 | Micro-pressure alternating testing machine and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112212911A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113583846A (en) * | 2021-07-29 | 2021-11-02 | 中国科学院长春光学精密机械与物理研究所 | Pressure supply equipment and cell loading device using same |
| CN113625793A (en) * | 2021-08-06 | 2021-11-09 | 成都博奥晶芯生物科技有限公司 | Full-automatic air pressure control system and method based on PID control |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201181250Y (en) * | 2008-01-07 | 2009-01-14 | 红旗仪表有限公司 | Pneumatic supercharging alternating pressure experiment machine |
| CN202614611U (en) * | 2012-06-30 | 2012-12-19 | 无锡隆盛科技股份有限公司 | Negative pressure endurance test device |
| CN203929105U (en) * | 2014-06-27 | 2014-11-05 | 浙江银轮机械股份有限公司 | A kind of pressure pulse test platform with servo electric jar |
| CN204314136U (en) * | 2014-12-24 | 2015-05-06 | 西南交通大学 | The normal direction loading equipemtn of fretting fatigue testing system |
| CN107461380A (en) * | 2017-09-12 | 2017-12-12 | 西北核技术研究所 | Half-sine wave pressure loading generating means and method |
| CN207556870U (en) * | 2017-12-13 | 2018-06-29 | 天津格特斯检测设备技术开发有限公司 | The gaseous pulse flushing system of the explosion-proof positive/negative-pressure alternation of enclosed |
| CN110425185A (en) * | 2019-08-23 | 2019-11-08 | 红旗仪表（长兴）有限公司 | A kind of novel high-pressure accurate voltage regulating device |
| CN110736585A (en) * | 2019-10-21 | 2020-01-31 | 红旗仪表有限公司 | high-pressure precise pressure control method |
| CN111693210A (en) * | 2020-07-01 | 2020-09-22 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
-
2020
- 2020-10-12 CN CN202011082143.3A patent/CN112212911A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201181250Y (en) * | 2008-01-07 | 2009-01-14 | 红旗仪表有限公司 | Pneumatic supercharging alternating pressure experiment machine |
| CN202614611U (en) * | 2012-06-30 | 2012-12-19 | 无锡隆盛科技股份有限公司 | Negative pressure endurance test device |
| CN203929105U (en) * | 2014-06-27 | 2014-11-05 | 浙江银轮机械股份有限公司 | A kind of pressure pulse test platform with servo electric jar |
| CN204314136U (en) * | 2014-12-24 | 2015-05-06 | 西南交通大学 | The normal direction loading equipemtn of fretting fatigue testing system |
| CN107461380A (en) * | 2017-09-12 | 2017-12-12 | 西北核技术研究所 | Half-sine wave pressure loading generating means and method |
| CN207556870U (en) * | 2017-12-13 | 2018-06-29 | 天津格特斯检测设备技术开发有限公司 | The gaseous pulse flushing system of the explosion-proof positive/negative-pressure alternation of enclosed |
| CN110425185A (en) * | 2019-08-23 | 2019-11-08 | 红旗仪表（长兴）有限公司 | A kind of novel high-pressure accurate voltage regulating device |
| CN110736585A (en) * | 2019-10-21 | 2020-01-31 | 红旗仪表有限公司 | high-pressure precise pressure control method |
| CN111693210A (en) * | 2020-07-01 | 2020-09-22 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113583846A (en) * | 2021-07-29 | 2021-11-02 | 中国科学院长春光学精密机械与物理研究所 | Pressure supply equipment and cell loading device using same |
| CN113625793A (en) * | 2021-08-06 | 2021-11-09 | 成都博奥晶芯生物科技有限公司 | Full-automatic air pressure control system and method based on PID control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112212911A (en) | Micro-pressure alternating testing machine and testing method | |
| CN109946020B (en) | Dynamic testing and calibrating device for rapid pressure sensor | |
| CN103292974B (en) | Chair hutch table bed screen wind dead load, stability, shock machine | |
| CN106225680B (en) | A kind of spool displacement measuring device and method based on laser displacement sensor | |
| CN218271660U (en) | High-throughput test module and device capable of providing different stress loads | |
| CN103940599A (en) | Pneumatic muscle/air cylinder integrated test system | |
| CN109696308B (en) | Aviation actuator loading test device under vibration environment and loading method thereof | |
| CN106323776A (en) | Fatigue testing device of damping pad | |
| CN209014386U (en) | It is biaxial stretch-formed in a kind of face to use width Self adapting fixture | |
| CN210626572U (en) | Life test device under simulation environment | |
| CN109269883A (en) | It is biaxial stretch-formed in a kind of face to use width Self adapting fixture | |
| CN111103108B (en) | Pseudo-static multifunctional test system | |
| CN214268007U (en) | Aviation vaulting pole pressurized strut loading testing arrangement | |
| RU191471U1 (en) | Aircraft dynamical load testing machine | |
| CN209908895U (en) | Dynamic testing device of oil cylinder | |
| CN210294117U (en) | Multidimensional stress loading experimental device for neutron diffraction measurement | |
| CN105444929A (en) | Portable device for measuring friction between medical device and biological tissue | |
| CN218956029U (en) | Full-automatic cylinder test bed | |
| CN111257116A (en) | Simulation yarn dynamic fracture strength testing device and testing method | |
| CN212134397U (en) | Pneumatic servo device and drag friction testing machine | |
| CN117967646A (en) | Double-station sealing element test equipment | |
| CN215525022U (en) | Testing device for valve pneumatic actuator | |
| CN217177005U (en) | Testing device for straight-stroke electric actuating mechanism | |
| CN206161328U (en) | Fatigue testing machine of bicycle saddle pipe | |
| CN220396175U (en) | Hydro-cylinder detects test device |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210112 |
|
| RJ01 | Rejection of invention patent application after publication |