CN114346287A - Square perforating device is used in tubular metal resonator processing - Google Patents
Square perforating device is used in tubular metal resonator processing Download PDFInfo
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- CN114346287A CN114346287A CN202210145687.2A CN202210145687A CN114346287A CN 114346287 A CN114346287 A CN 114346287A CN 202210145687 A CN202210145687 A CN 202210145687A CN 114346287 A CN114346287 A CN 114346287A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 71
- 239000002184 metal Substances 0.000 title claims abstract description 71
- 238000005553 drilling Methods 0.000 claims abstract description 21
- 238000004080 punching Methods 0.000 claims abstract description 10
- 238000007664 blowing Methods 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims description 25
- 238000007599 discharging Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention provides a square punching device for processing a metal pipe, and relates to the field of metal pipes. This square perforating device is used in tubular metal resonator processing, including the blowing board, the top of blowing board is provided with the bent frame, the last fixed surface of blowing board is connected with the pneumatic cylinder, the upper end of pneumatic cylinder and the rear end fixed connection of bent frame, the concentric cover of front end bottom fixedly connected with of bent frame, the inside of concentric cover is provided with the drilling rod, the front end of bent frame rotates and cup joints the upper end at the drilling rod, the surface of concentric cover rotates and has cup jointed the expansion plate, the below of expansion plate and the right side that is located the drilling rod are provided with hollow disc, two outer rings have been cup jointed in hollow disc's surface rotation. This square perforating device is used in tubular metal resonator processing through setting up expansion plate, top tube, low tube, bottom tube and sucking disc, and after the drilling rod reset in the metal pipeline surface formation square return circuit, the square metal sheet that hollow sucking disc guaranteed to downcut can not drop inside the tubular metal resonator, makes the tubular metal resonator inside can not receive the mar injury.
Description
Technical Field
The invention relates to the field of metal pipes, in particular to a square punching device for processing a metal pipe.
Background
Metal pipes are an indispensable material used in industries such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments and the like, and various industries, and iron pipes, steel pipes, stainless steel pipes, aluminum pipes and the like are widely used, so that various processing equipment for the metal pipes also come into force.
Drilling is and the main step in the tubular metal resonator processing, and when boring the quad slit to the tubular metal resonator, drilling equipment control tubular metal resonator moves under the drilling rod, makes the quarter slit that the quarter slit was bored above the tubular metal resonator to the quarter slit, but the metal sheet that the drilling drops can drop inside the tubular metal resonator, and the metal sheet that drops inside forms the mar to the tubular metal resonator inner wall easily when the clearance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a square punching device for processing a metal pipe, which solves the problems that a metal plate dropped from a drilled hole falls into the metal pipe and the metal plate dropped into the metal pipe easily scratches the inner wall of the metal pipe during cleaning.
In order to achieve the purpose, the invention is realized by the following technical scheme: a square punching device for processing metal pipes comprises a discharging plate, a bent frame is arranged above the discharging plate, a hydraulic cylinder is fixedly connected to the upper surface of the discharging plate, the upper end of the hydraulic cylinder is fixedly connected with the rear end of the bent frame, a concentric sleeve is fixedly connected to the bottom surface of the front end of the bent frame, a drill pipe is arranged in the concentric sleeve, the front end of the bent frame is rotatably sleeved on the upper end of the drill pipe, an expansion plate is rotatably sleeved on the outer surface of the concentric sleeve, a hollow disc is arranged below the expansion plate and on the right side of the drill pipe, two outer rings are rotatably sleeved on the outer surface of the hollow disc, one ends, close to each other, of the two outer rings are fixedly connected through an arc plate, the arc plate is arranged above the hollow disc, a ventilation groove is formed in the bottom surface of the arc plate, a ventilation hole communicated with the inside is formed in the upper surface of the hollow disc, the ventilation hole is communicated with the inside of the ventilation groove, and a ventilation pipe is fixedly penetrated through the upper surface of the arc plate, the right-hand member of expansion plate rotates to cup joint in the upper end of ventilation pipe, and fixed surface is connected with the air pump on the right-hand member of expansion plate, the output of air pump and the upper end fixed connection of ventilation pipe.
The bottom surface of hollow core dish just is located the fixed connecting pipe of pegging graft between two outer loops, the upper tube has been cup jointed in the lower extreme activity of connecting pipe, the lower extreme of upper tube slides and has cup jointed the low tube, the lower extreme activity of low tube has cup jointed the bottom tube, the bottom surface fixedly connected with of bottom tube and the hollow sucking disc of inside intercommunication, hollow sucking disc is located the lower extreme of drilling rod, the external fixation of connecting pipe has cup jointed straight spring, the lower extreme of straight spring is connected with the external fixation of bottom tube, the upper tube all is located the inside of straight spring with the low tube, fixed surface is connected with the motor on the front end of bent frame, the upper end of drilling rod and the output fixed connection of motor.
Preferably, the cavity has been seted up to the inner ring surface that is located the outer loop on right side, and the cavity is located the place ahead of hollow dish, and the inside of cavity is provided with the arc spring, the lower extreme of arc spring and the inner wall fixed connection of cavity, the upper end fixedly connected with fly leaf of arc spring, the front end of fly leaf slides and pegs graft in the inside of cavity, the rear end of fly leaf and the last fixed surface of hollow dish are connected.
Preferably, the front of the hollow disc is located between the two outer rings and is fixedly connected with a fixed rod, a concentric disc is arranged above the fixed rod, the concentric disc, a drill rod and a concentric sleeve are coaxially arranged, the back of the concentric disc and the upper surface of the discharging plate, the front end of the bent frame is located inside the concentric disc, and the concentric disc is located in front of the hydraulic cylinder.
Preferably, the end of the connecting pipe close to the bottom pipe is hollow sphere, and the end of the upper pipe far away from the lower pipe is hollow sphere.
Preferably, the shapes of the ventilation groove and the cavity are both arc shapes, and the arc angle range of the arc plate is larger than that of the cavity.
Preferably, the bent frame is U-shaped, and the fixing rod is L-shaped.
Compared with the prior art, the invention has the following beneficial effects:
1. the square punching device for processing the metal pipe comprises a telescopic plate, an upper pipe, a lower pipe, a bottom pipe and a sucker, wherein an air pump pumps air from the hollow disc through a ventilation pipe to form negative pressure in the hollow disc, the hollow sucker is in contact with the surface of the pipe before the pipe is driven by a hydraulic cylinder to be close to the metal pipe, the negative pressure in the hollow disc enables the hollow sucker to adsorb the surface of the pipe, when the metal pipe moves relative to the drill pipe, because one end, close to the bottom pipe, of the connecting pipe is in a hollow sphere shape, the other end, far away from the upper pipe and the lower pipe, of the upper pipe is in a hollow sphere shape, the upper pipe and the connecting pipe can rotate at multiple angles, the hollow sucker can move synchronously with the pipe, the telescopic plate can move on a concentric sleeve, the drill pipe can drill out a square track on the surface of the metal pipe, the drill pipe cannot interfere with the hollow sucker, after the drilling rod forms square return circuit and resets at the metal pipeline surface, the square metal sheet that hollow chuck guaranteed to downcut can not drop the metal pipe inside, makes the metal pipe inside can not receive the mar injury.
2. This square perforating device is used in tubular metal resonator processing, through setting up the concentric disc, the cavity, arc spring and dead lever, cut the back down at the metal sheet, the pneumatic cylinder drives drilling rod and hollow dish rebound, the synchronous rebound of metal sheet that hollow sucking disc drove and downcuts, after the dead lever contacts with the concentric disc, when hollow dish continues the rebound, the dead lever promotes the relative outer loop of hollow dish and rotates under the blockking of concentric disc, hollow sucking disc misplaces gradually with the tubular metal resonator under the drive of hollow dish, when the ventilation hole remove with the cavity in not communicate, hollow sucking disc disappears to the suction of tubular metal resonator, make the tubular metal resonator's rear side that drops, then continue to carry out drilling treatment to the tubular metal resonator.
3. This square perforating device is used in tubular metal resonator processing, through setting up straight spring, straight spring guarantees that hollow sucking disc when contactless with the tubular metal resonator, and straight spring can promote the bottom tube and has the trend of keeping away from each other with the connecting pipe, stimulates top tube and low tube, makes top tube and low tube be in vertical form, guarantees bottom surface and the tubular metal resonator surface contact of hollow sucking disc when the downstream.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection of the hydraulic cylinder and the bent frame according to the present invention;
FIG. 3 is a schematic view of the internal structure of the cavity of the present invention;
FIG. 4 is a schematic view of the internal structure of the hollow plate of the present invention;
FIG. 5 is a right-view structural diagram of a portion of the structure of the present invention.
The device comprises a discharge plate 1, a bent frame 2, a hydraulic cylinder 3, a concentric sleeve 4, a drill rod 5, an expansion plate 6, an outer ring 7, an arc plate 8, a hollow disc 9, a ventilation groove 10, a ventilation hole 11, a ventilation pipe 12, an air pump 13, a connecting pipe 14, an upper pipe 15, a lower pipe 16, a bottom pipe 17, a hollow suction cup 18, a straight spring 19, a cavity 20, an arc spring 21, a movable plate 22, a concentric disc 23, a fixed rod 24 and a motor 25.
Detailed Description
As shown in fig. 1-5, a square perforating device is used in tubular metal resonator processing, including blowing board 1, the top of blowing board 1 is provided with bent frame 2, the last fixed surface of blowing board 1 is connected with pneumatic cylinder 3, the upper end of pneumatic cylinder 3 and the rear end fixed connection of bent frame 2, the concentric cover 4 of front end bottom fixed connection of bent frame 2, the inside of concentric cover 4 is provided with drilling rod 5, the front end of bent frame 2 rotates and cup joints the upper end at drilling rod 5, the surface of concentric cover 4 rotates and has cup jointed expansion plate 6, expansion plate 6 can stretch out and draw back when the relative drilling rod 5 of metal pipeline removed, the below of expansion plate 6 and the right side that is located drilling rod 5 are provided with hollow disc 9, the surface of hollow disc 9 rotates and has cup jointed two outer rings 7, the one end that two outer rings 7 are close to each other passes through arc board 8 fixed connection, arc board 8 is located the top of hollow disc 9.
The bottom surface of the arc plate 8 is provided with a ventilation groove 10, the upper surface of the hollow disc 9 is provided with a ventilation hole 11 communicated with the inside, the inner annular surface of the outer ring 7 positioned on the right side is provided with a cavity 20, the cavity 20 is positioned in front of the hollow disc 9, an arc spring 21 is arranged inside the cavity 20, the lower end of the arc spring 21 is fixedly connected with the inner wall of the cavity 20, the upper end of the arc spring 21 is fixedly connected with a movable plate 22, the arc spring 21 pushes the movable plate 22 to be positioned above the cavity 20, the front end of the movable plate 22 is slidably inserted inside the cavity 20, the rear end of the movable plate 22 is fixedly connected with the upper surface of the hollow disc 9, the front surface of the hollow disc 9 is positioned between the two outer rings 7 and is fixedly connected with a fixed rod 24, the bent frame 2 is U-shaped, the fixed rod 24 is L-shaped, a concentric disc 23 is arranged above the fixed rod 24, the concentric disc 23, the drill rod 5 and the concentric sleeve 4 are coaxially arranged, the back of concentric dish 23 and the upper surface of blowing board 1, the front end of bent frame 2 is located the inside of concentric dish 23, and concentric dish 23 is located the place ahead of pneumatic cylinder 3, and the shape of ventilation groove 10 and cavity 20 is the arc, and the circular arc angle scope of arc board 8 is less than the circular arc angle scope of cavity 20, guarantees that ventilation hole 11 can not rotate out the 8 scopes of arc board, makes hollow chuck 18 no longer adsorb the metal sheet.
A connecting pipe 14 is fixedly inserted between the two outer rings 7 on the bottom surface of the hollow disc 9, an upper pipe 15 is movably sleeved at the lower end of the connecting pipe 14, a lower pipe 16 is slidably sleeved at the lower end of the upper pipe 15, a bottom pipe 17 is movably sleeved at the lower end of the lower pipe 16, a hollow sucker 18 communicated with the inside is fixedly connected to the bottom surface of the bottom pipe 17, the hollow sucker 18 is positioned at the lower end of the drill rod 5, a straight spring 19 is fixedly sleeved on the outer surface of the connecting pipe 14, the straight spring 19 can enable the upper pipe 15 and the lower pipe 16 to be in a vertical state before the hollow sucker 18 is contacted with a metal pipe, the lower end of the straight spring 19 is fixedly connected with the outer surface of the bottom pipe 17, the upper pipe 15 and the lower pipe 16 are both positioned inside the straight spring 19, one ends of the connecting pipe 14 and the bottom pipe 17, which are close to each other, one ends of the upper pipe 15 and the lower pipe 16, which are far away from each other, are both in a hollow sphere, so that the rotating range of the upper pipe 15 and the hollow sucker 18 is large, so that the drill rod 5 can not interfere with the hollow sucker when the metal pipeline moves, the upper surface of the front end of the bent frame 2 is fixedly connected with a motor 25, and the upper end of the drill rod 5 is fixedly connected with the output end of the motor 25.
When the device is used, after a metal pipe is placed under a drill rod 5, the air pump 13 pumps air out of the hollow disc 9 through the ventilation pipe 12 to form negative pressure in the hollow disc 9, when the hydraulic cylinder 3 drives the drill rod 5 to be close to the metal pipe, the hollow sucker 18 is in contact with the pipeline first, the negative pressure in the hollow disc 9 enables the hollow sucker 18 to adsorb the surface of the pipeline, when the metal pipeline moves relative to the drill rod 5, because one end, close to each other, of the connecting pipe 14 and the bottom pipe 17 is in a hollow sphere shape, one end, far away from each other, of the upper pipe 15 and the lower pipe 16 is in a hollow sphere shape, the upper pipe 15 and the connecting pipe 14 can rotate at multiple angles, the lower pipe 16 and the bottom pipe 17 can rotate at multiple angles, the hollow sucker 18 can move synchronously with the pipeline, the expansion plate 6 can move on the concentric sleeve 4 at the same time, and the drill rod 5 can not interfere with the hollow sucker 18 when drilling a square track on the surface of the metal pipe, after the drill rod 5 is reset in a square loop formed on the surface of the metal pipeline, the metal plate is separated from the metal pipeline, the hydraulic cylinder 3 drives the drill rod 5 and the hollow disc 9 to move upwards, the hollow sucker 18 drives the cut metal plate to move upwards synchronously, after the fixed rod 24 is contacted with the concentric disc 23, the hollow disc 9 continues to move upwards, the fixed rod 24 pushes the hollow disc 9 to rotate relative to the outer ring 7 under the blocking of the concentric disc 23, the hollow sucker 18 is gradually staggered with the metal pipe under the driving of the hollow disc 9, when the vent hole 11 is moved to be not communicated with the cavity 20, the suction force of the hollow sucker 18 to the metal plate disappears, so that the metal plate falls to the rear side of the metal pipe, and then the metal pipe can be drilled continuously.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a square perforating device is used in tubular metal resonator processing, includes blowing board (1), its characterized in that: a bent frame (2) is arranged above the discharging plate (1), a hydraulic cylinder (3) is fixedly connected to the upper surface of the discharging plate (1), the upper end of the hydraulic cylinder (3) is fixedly connected with the rear end of the bent frame (2), a concentric sleeve (4) is fixedly connected to the bottom surface of the front end of the bent frame (2), a drill rod (5) is arranged inside the concentric sleeve (4), the front end of the bent frame (2) is rotatably sleeved at the upper end of the drill rod (5), a telescopic plate (6) is rotatably sleeved on the outer surface of the concentric sleeve (4), a hollow disc (9) is arranged below the telescopic plate (6) and positioned on the right side of the drill rod (5), two outer rings (7) are rotatably sleeved on the outer surface of the hollow disc (9), one ends of the two outer rings (7) close to each other are fixedly connected through arc plates (8), the arc plates (8) are positioned above the hollow disc (9), ventilation grooves (10) are formed in the bottom surface of the arc plates (8), the upper surface of the hollow disc (9) is provided with a vent hole (11) communicated with the inside, the vent hole (11) is communicated with the inside of the vent groove (10), a vent pipe (12) is fixedly penetrated through the upper surface of the arc plate (8), the right end of the expansion plate (6) is rotatably sleeved at the upper end of the vent pipe (12), the upper surface of the right end of the expansion plate (6) is fixedly connected with an air pump (13), and the output end of the air pump (13) is fixedly connected with the upper end of the vent pipe (12);
the bottom surface of hollow plate (9) just is located and fixes pegging graft between two outer loops (7) and has been had connecting pipe (14), the lower extreme activity of connecting pipe (14) has cup jointed top tube (15), the lower extreme of top tube (15) slides and has cup jointed low tube (16), the lower extreme activity of low tube (16) has cup jointed bottom tube (17), the bottom surface fixedly connected with of bottom tube (17) and hollow sucking disc (18) of inside intercommunication, hollow sucking disc (18) are located the lower extreme of drilling rod (5), the external surface fixed of connecting pipe (14) has cup jointed straight spring (19), the lower extreme of straight spring (19) and the external surface fixed connection of bottom tube (17), top tube (15) all are located the inside of straight spring (19) with low tube (16), fixed surface is connected with motor (25) on the front end of bent frame (2), the upper end of drilling rod (5) and the output fixed connection of motor (25).
2. The square punching device for processing the metal pipe according to claim 1, wherein: cavity (20) have been seted up to the inner ring face of outer ring (7) that is located the right side, cavity (20) are located the place ahead of hollow dish (9), the inside of cavity (20) is provided with arc spring (21), the lower extreme of arc spring (21) and the inner wall fixed connection of cavity (20), the upper end fixedly connected with fly leaf (22) of arc spring (21), the front end of fly leaf (22) slides and pegs graft in the inside of cavity (20), the rear end of fly leaf (22) and the last fixed surface of hollow dish (9) are connected.
3. The square punching device for processing the metal pipe according to claim 2, wherein: the front of hollow dish (9) is located fixedly connected with dead lever (24) between two outer rings (7), and the top of dead lever (24) is provided with concentric dish (23), and concentric dish (23), drilling rod (5) and concentric cover (4) coaxial setting, the back of concentric dish (23) and the upper surface of blowing board (1), the front end of bent frame (2) is located the inside of concentric dish (23), and concentric dish (23) are located the place ahead of pneumatic cylinder (3).
4. The square punching device for processing the metal pipe according to claim 1, wherein: the end, close to each other, of the connecting pipe (14) and the bottom pipe (17) is hollow and spherical, and the end, far away from each other, of the upper pipe (15) and the lower pipe (16) is hollow and spherical.
5. The square punching device for processing the metal pipe according to claim 2, wherein: the shapes of the ventilation groove (10) and the cavity (20) are both arc shapes, and the arc angle range of the arc plate (8) is larger than that of the cavity (20).
6. The square punching device for processing the metal pipe according to claim 1, wherein: the bent frame (2) is U-shaped, and the fixing rod (24) is L-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210145687.2A CN114346287B (en) | 2022-02-17 | 2022-02-17 | Square perforating device is used in tubular metal resonator processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210145687.2A CN114346287B (en) | 2022-02-17 | 2022-02-17 | Square perforating device is used in tubular metal resonator processing |
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| Publication Number | Publication Date |
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| CN114346287A true CN114346287A (en) | 2022-04-15 |
| CN114346287B CN114346287B (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210145687.2A Active CN114346287B (en) | 2022-02-17 | 2022-02-17 | Square perforating device is used in tubular metal resonator processing |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29510840U1 (en) * | 1995-07-04 | 1995-11-02 | Hartmann, Karl-Heinrich, 87634 Obergünzburg | Electric milling machine for cutting round, square and rectangular holes |
| CN205571480U (en) * | 2016-03-24 | 2016-09-14 | 丁睿健 | Device in evolution hole |
| CN106424833A (en) * | 2016-11-21 | 2017-02-22 | 马文强 | Square hole drilling machine |
| CN109093157A (en) * | 2018-08-27 | 2018-12-28 | 东宁晟（北京）数字科技有限公司 | A kind of external-drive opening square hole machine |
| CN209647658U (en) * | 2019-03-29 | 2019-11-19 | 贵州恒基动能数控科技有限公司 | Boring device is used in a kind of processing of plate-like charger spare part |
| CN213002963U (en) * | 2020-08-28 | 2021-04-20 | 珠海楚展铝制品有限公司 | Aluminum pipe cutting is with piece stop device |
| CN215241950U (en) * | 2020-12-30 | 2021-12-21 | 周宁 | Wall drilling equipment is used in security protection engineering construction |
-
2022
- 2022-02-17 CN CN202210145687.2A patent/CN114346287B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29510840U1 (en) * | 1995-07-04 | 1995-11-02 | Hartmann, Karl-Heinrich, 87634 Obergünzburg | Electric milling machine for cutting round, square and rectangular holes |
| CN205571480U (en) * | 2016-03-24 | 2016-09-14 | 丁睿健 | Device in evolution hole |
| CN106424833A (en) * | 2016-11-21 | 2017-02-22 | 马文强 | Square hole drilling machine |
| CN109093157A (en) * | 2018-08-27 | 2018-12-28 | 东宁晟（北京）数字科技有限公司 | A kind of external-drive opening square hole machine |
| CN209647658U (en) * | 2019-03-29 | 2019-11-19 | 贵州恒基动能数控科技有限公司 | Boring device is used in a kind of processing of plate-like charger spare part |
| CN213002963U (en) * | 2020-08-28 | 2021-04-20 | 珠海楚展铝制品有限公司 | Aluminum pipe cutting is with piece stop device |
| CN215241950U (en) * | 2020-12-30 | 2021-12-21 | 周宁 | Wall drilling equipment is used in security protection engineering construction |
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| CN114346287B (en) | 2024-03-29 |
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Effective date of registration: 20240428 Address after: 237000 Chenjialou Village Office Group, Luoji Township, Yu'an District, Lu'an City, Anhui Province Patentee after: Wang Fei Country or region after: China Address before: 100089 first floor, block a, building 1, yard 2, Yongcheng North Road, Haidian District, Beijing Patentee before: Fei Ke Country or region before: China |
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