CN114379020A - Composite forming device for preparing glass fiber reinforced gas-assisted composite material - Google Patents
Composite forming device for preparing glass fiber reinforced gas-assisted composite material Download PDFInfo
- Publication number
- CN114379020A CN114379020A CN202210048031.9A CN202210048031A CN114379020A CN 114379020 A CN114379020 A CN 114379020A CN 202210048031 A CN202210048031 A CN 202210048031A CN 114379020 A CN114379020 A CN 114379020A
- Authority
- CN
- China
- Prior art keywords
- pipe
- gas
- intubate
- glass fiber
- fiber reinforced
- 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.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 239000003365 glass fiber Substances 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000003780 insertion Methods 0.000 claims abstract description 23
- 230000037431 insertion Effects 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 210000003437 trachea Anatomy 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 abstract description 20
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000004616 structural foam Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1734—Nozzles therefor
- B29C45/1735—Nozzles for introducing the fluid through the mould gate, e.g. incorporated in the injection nozzle
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention discloses a composite forming device for preparing a glass fiber reinforced gas-assisted composite material, which comprises a material channel pipe and an air pipe, wherein a first air hole is formed in the material channel pipe, one end of the air pipe, which is close to the material channel pipe, is provided with a connecting hose, the end part of the connecting hose is provided with an insertion pipe, one end of the insertion pipe is inserted into the material channel pipe, the end part of the insertion pipe is provided with a sealing element, the air pipe is provided with a transmission piece, the air pipe drives the insertion pipe and the sealing element to rotate through the transmission piece when moving along with a seat platform, the composite forming device for preparing the glass fiber reinforced gas-assisted composite material can ensure a sealing box of the material channel pipe during injection molding, when the injection molding is finished, the first air hole and the second air hole are butted through the rotation of the sealing arc plate, high-pressure gas is discharged, the nozzle is not required to be repeatedly connected with the material channel, and the abrasion of the nozzle can be reduced, the service life of the equipment is prolonged.
Description
Technical Field
The invention relates to the technical field of gas-assisted composite material preparation, in particular to a composite forming device for preparing a glass fiber reinforced gas-assisted composite material.
Background
Gas-assisted injection (injection molding): also called gas injection (injection molding) is a new injection molding process, it is since the reciprocating screw injection machine comes to the world, one of the most important developments of the injection molding industry, gas-assisted injection molding is the extension of injection molding, it is developed on the basis of injection molding technology and structural foam injection molding, it can also be regarded as a certain kind of complex of injection molding and hollow molding, from this meaning, also can be called "hollow injection molding", its principle is in the original injection molding pressure maintaining stage, utilize the relatively low gas of pressure to replace the resin pressure maintaining in the cavity, gas-assisted injection molding only needs to be realized on the existing injection molding machine add a gas supply apparatus, the gas supply apparatus is formed by air pump, high-pressure gas generating device, gas control device and gas nozzle, the gas control device uses the special compressor to supply gas continuously, uses the electric valve to control and keep the pressure constant, the pressure is usually 3 grades, and one set of gas control device can be matched with a plurality of injection molding machines.
When gaseous supplementary moulding plastics, after plastics are moulded plastics, inside relying on the nozzle directly to enter into plastics with high-pressure gas, form the enclosure space of an extension according to the air flue, make the air cavity keep certain pressure until the cooling finishes, before the mould is opened, retreat through the seat platform and make nozzle and material way force the separation, make gas outgoing plastic products, accomplish a preparation flow, but, because guarantee the leakproofness between nozzle and the material way, the two need be interference connection, can all lead to wearing and tearing to the nozzle when the force of every time separates, long-term use can lead to the leakproofness variation between nozzle and the material way, cause the influence to the quality of product. Therefore, a composite forming device for preparing the glass fiber reinforced gas-assisted composite material is provided.
Disclosure of Invention
The invention aims to provide a composite forming device for preparing a glass fiber reinforced gas-assisted composite material, 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 fine enhancement mode gas of glass is assisted combined material preparation and is used compound forming device, includes material way pipe and trachea, it has the gas pocket one to have seted up on the material way pipe, the trachea is close to the one end of material way pipe and is provided with coupling hose, coupling hose tip is provided with the intubate, intubate one end is inserted the material and is said intraductal and the tip is provided with the sealing member, be provided with the driving medium on the trachea drive intubate and sealing member rotation through the driving medium when the trachea follows the seat platform and removes, all be provided with the connecting piece between trachea and coupling hose, coupling hose and intubate and the material way pipe.
Preferably, the connecting piece is including setting up the connecting plate on material way pipe, intubate, coupling hose and trachea, it is provided with fixed the knot to rotate on the connecting plate, rather than adjacent be provided with on the connecting plate with fixed the fixed block that detains the cooperation and use, set up on the fixed block with the fixed recess of detaining the block.
Preferably, the transmission part comprises a slide rail arranged outside the insertion pipe, a slide block is movably arranged in the slide rail, a transmission rod is arranged on a connecting plate at one end, away from the insertion pipe, of the connecting hose, and the transmission rod movably penetrates through the connecting plate at the other end of the connecting hose and the end part of the connecting plate and is fixedly connected with the slide block.
Preferably, the connecting hose outside still is provided with the guide bar, guide bar one end sets up on being located the connecting plate of connecting hose tip, just the connecting plate of the connecting hose other end is run through in the activity of the guide bar other end.
Preferably, the connection hose is a corrugated tube.
Preferably, the sealing member is including the fixed sealed arc board that sets up at the intubate tip, gas pocket two has been seted up on the sealed arc board, sealed arc board both sides are provided with the mounting panel, be provided with fastening spring on the mounting panel, the fastening spring both ends respectively with the mounting panel fixed connection of sealed arc board both sides.
Preferably, the fixed rod is fixedly arranged at the end part of the insertion pipe, the sealing arc plate is fixedly connected with the fixed rod, and the two fixed rods are respectively positioned at two sides of the air hole.
Preferably, the inner wall of the material channel pipe is provided with a limiting lantern ring, and when the insertion pipe is inserted into the material channel pipe, the limiting lantern ring abuts against the end part of the insertion pipe to limit the insertion pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the sealing arc plate is arranged, so that the sealing box of the material channel pipe can be ensured during injection molding, when the injection molding is finished, the air hole I and the air hole II are butted through the rotation of the sealing arc plate, and then high-pressure gas is discharged, the nozzle and the material channel do not need to be repeatedly connected, the abrasion of the nozzle can be reduced, and the service life of equipment is prolonged.
2. According to the invention, the fastening spring is arranged on the sealing arc plate, the sealing arc plate can be always tightly attached to the inner wall of the material channel pipe through the elastic force of the fastening spring, the sealing property in the material channel pipe is ensured, and the fixing rods are arranged on the two sides of the air hole II, so that the parts on the two sides of the air hole II of the sealing arc plate can be always kept in the arc shape attached to the inner wall of the material channel pipe, and the sealing property at the air hole is further ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the material pipe of the present invention;
FIG. 3 is a partial schematic view of the present invention;
FIG. 4 is a schematic view of a partial structure of FIG. 1 according to the present invention;
fig. 5 is a schematic view of the sealing member of the present invention.
In the figure: 1-a material channel pipe; 2-the trachea; 3-air hole one; 4-connecting a hose; 5, intubation; 6-a seal; 61-sealing arc plate; 62-pore two; 63-mounting a plate; 64-a fastening spring; 65-a fixation bar; 66-a restraining collar; 7-a transmission member; 71-a slide rail; 72-a slide block; 73-a transmission rod; 74-a guide bar; 8-a connector; 81-connecting plate; 82-fixing buckles; 83-fixed block; 84-groove.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a composite forming device for preparing glass fiber reinforced gas-assisted composite materials comprises a material channel pipe 1 and an air pipe 2, wherein a first air hole 3 is formed in the material channel pipe 1, a connecting hose 4 is arranged at one end, close to the material channel pipe 1, of the air pipe 2, an insertion pipe 5 is arranged at the end part of the connecting hose 4, one end of the insertion pipe 5 is inserted into the material channel pipe 1, a sealing piece 6 is arranged at the end part of the insertion pipe 5, a transmission piece 7 is arranged on the air pipe 2, the insertion pipe 5 and the sealing piece 6 are driven to rotate by the transmission piece 7 when the air pipe 2 moves along with a seat platform, connecting pieces 8 are arranged among the air pipe 2, the connecting hose 4, the insertion pipe 5 and the material channel pipe 1, a sealing box of the material channel pipe 1 can be ensured during injection molding by arranging a sealing arc plate 61, when the injection molding is finished, the first air hole 3 and a second air hole 62 are butted by the rotation of the sealing arc plate 61, and high-pressure gas is discharged, the nozzle and the material channel do not need to be repeatedly connected, so that the abrasion of the nozzle can be reduced, and the service life of the equipment is prolonged.
Connecting piece 8 is including setting up at material pipe 1, intubate 5, connecting plate 81 on coupling hose 4 and the trachea 2, intubate 5 rotates with connecting plate 81 to be connected, all the other pipelines all with connecting plate 81 fixed connection, it is provided with fixed 82 of detaining to rotate on the connecting plate 81, rather than being provided with on the adjacent connecting plate 81 with fixed block 83 who detains 82 cooperation use, set up on the fixed block 83 with fixed recess 84 who detains 82 block, all connect through connecting piece 8 between two arbitrary adjacent pipelines, laminate connecting plate 81 of two adjacent pipelines each other when connecting, then with fixed recess 84 block on detaining 82 and the fixed block 83, be interference connection between fixed 82 of detaining and the fixed block 83, guarantee the compactness of connecting, can dismantle when changing equipment convenient each pipeline through this kind of setting.
The transmission part 7 comprises a sliding rail 71 arranged on the outer side of the insertion tube 5, a sliding block 72 is movably arranged in the sliding rail 71, a transmission rod 73 is arranged on a connecting plate 81 at one end, away from the insertion tube 5, of the connecting hose 4, the transmission rod 73 movably penetrates through the connecting plate 81 at the other end of the connecting hose 4, and the end part of the connecting plate is fixedly connected with the sliding block 72.
The outside of the connecting hose 4 is also provided with a guide rod 74, one end of the guide rod 74 is arranged on a connecting plate 81 positioned at the end part of the connecting hose 4, the other end of the guide rod 74 movably penetrates through the connecting plate 81 at the other end of the connecting hose 4, the connecting hose 4 can move more stably when being compressed and reset through the guide plate, and a stable guiding effect is achieved.
The connecting hose 4 is a corrugated pipe, the corrugated pipe is light in weight and high in playing performance, and stable and continuous use can be guaranteed.
5 end fixing of intubate is provided with dead lever 65, sealed arc board 61 and dead lever 65 fixed connection, dead lever 65 is two and is located the gas pocket both sides respectively, seal between arc board 61 and material way pipe 1, only can make material way pipe 1 and external world switch on when gas pocket one 3 and two 62 mutual docks of gas pocket, rotate when making gas pocket two 62 and gas pocket one 3 stagger when sealed arc board 61, the problem that needs to consider this moment is exactly that the space of gas pocket side need guarantee stable sealed, set up dead lever 65 in the both sides of sealed arc board 61, make the partial radian between two dead levers 65 on the sealed arc board 61 unchangeable, laminate with material way pipe 1 inner wall all the time, guarantee stable sealed.
The inner wall of the material channel pipe 1 is provided with a limiting lantern ring 66, when the insertion pipe 5 is inserted into the material channel pipe 1, the limiting lantern ring 66 abuts against the end part of the insertion pipe 5 to limit the insertion pipe, and the rotating stability of the sealing arc plate 61 is guaranteed.
In conclusion, when moulding plastics, the seat platform can drive trachea 2 and compress the bellows towards material way pipe 1 removal, can drive transfer line 73 simultaneously and remove, and then drive intubate 5 through the cooperation of slider 72 with slide rail 71 and rotate, can drive sealed arc 61 when intubate 5 rotates and rotate, make gas pocket two 62 stagger with gas pocket one 3, then just can send into gas and carry out the auxiliary forming, and at the pressurize in-process, because gas pocket two 62 stagger with gas pocket one 3, material way pipe 1 is not switched on with the external world, guarantee that equipment can not leak gas, after the shaping, need discharge gas, the seat platform retreats at this moment and drives intubate 5 rotation and reset, and then drive sealed arc 61 and rotate, dock gas pocket one 3 and gas pocket two 62, gas can discharge at this moment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (8)
1. The utility model provides a fine enhancement mode gas of glass assists combined material preparation with compound forming device, includes material way pipe (1) and trachea (2), seted up gas pocket (3) on material way pipe (1), its characterized in that: trachea (2) are close to the one end of material way pipe (1) and are provided with coupling hose (4), coupling hose (4) tip is provided with intubate (5), intubate (5) one end is inserted in material way pipe (1) and the tip is provided with sealing member (6), be provided with driving medium (7) on trachea (2) are followed and are driven intubate (5) and sealing member (6) through driving medium (7) and rotate when the seat platform removes, all be provided with connecting piece (8) between trachea (2) and coupling hose (4), coupling hose (4) and intubate (5) and material way pipe (1).
2. The composite molding device for preparing the glass fiber reinforced gas-assisted composite material according to claim 1, wherein: connecting piece (8) are including setting up connecting plate (81) on material way pipe (1), intubate (5), coupling hose (4) and trachea (2), it is provided with fixed knot (82) to rotate on connecting plate (81), rather than adjacent be provided with on connecting plate (81) and detain fixed block (83) that (82) cooperation was used with fixed, offer on fixed block (83) with fixed recess (84) of detaining (82) block.
3. The composite molding device for preparing the glass fiber reinforced gas-assisted composite material as claimed in claim 2, wherein: the transmission part (7) is including setting up slide rail (71) in intubate (5) outside, the activity is provided with slider (72) in slide rail (71), connecting hose (4) are kept away from and are provided with transfer line (73) on connecting plate (81) of intubate (5) one end, transfer line (73) activity run through connecting hose (4) other end connecting plate (81) and tip and slider (72) fixed connection.
4. The composite molding device for preparing glass fiber reinforced gas-assisted composite material according to claim 3, wherein: the outer side of the connecting hose (4) is further provided with a guide rod (74), one end of the guide rod (74) is arranged on a connecting plate (81) located at the end part of the connecting hose (4), and the other end of the guide rod (74) movably penetrates through the connecting plate (81) at the other end of the connecting hose (4).
5. The composite molding device for preparing glass fiber reinforced gas-assisted composite material according to claim 4, wherein: the connecting hose (4) is a corrugated pipe.
6. The composite molding device for preparing glass fiber reinforced gas-assisted composite material according to claim 5, wherein: sealing member (6) are including fixed sealed arc board (61) that sets up at intubate (5) tip, gas pocket two (62) have been seted up on sealed arc board (61), sealed arc board (61) both sides are provided with mounting panel (63), be provided with fastening spring (64) on mounting panel (63), fastening spring (64) both ends respectively with mounting panel (63) fixed connection of sealed arc board (61) both sides.
7. The composite molding device for preparing the glass fiber reinforced gas-assisted composite material as claimed in claim 6, wherein: the fixed dead lever (65) that is provided with of intubate (5) end, sealed arc board (61) and dead lever (65) fixed connection, dead lever (65) are two and are located the gas pocket both sides respectively.
8. The composite molding device for preparing glass fiber reinforced gas-assisted composite material according to claim 7, wherein: the inner wall of the material channel pipe (1) is provided with a limiting lantern ring (66), and when the insertion pipe (5) is inserted into the material channel pipe (1), the limiting lantern ring (66) abuts against the end part of the insertion pipe (5) to limit the insertion pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210048031.9A CN114379020B (en) | 2022-01-17 | 2022-01-17 | Glass fiber reinforced gas-assisted composite material preparation is with compound forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210048031.9A CN114379020B (en) | 2022-01-17 | 2022-01-17 | Glass fiber reinforced gas-assisted composite material preparation is with compound forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114379020A true CN114379020A (en) | 2022-04-22 |
| CN114379020B CN114379020B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210048031.9A Active CN114379020B (en) | 2022-01-17 | 2022-01-17 | Glass fiber reinforced gas-assisted composite material preparation is with compound forming device |
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| CN (1) | CN114379020B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10337744A (en) * | 1997-06-09 | 1998-12-22 | Mitsubishi Eng Plast Kk | Manufacture of fiber reinforced thermoplastic resin molded product, and molded product |
| US20030224080A1 (en) * | 2000-04-21 | 2003-12-04 | Ronald Thomas | Automated pin for gas assisted injection molding |
| CN109454904A (en) * | 2017-09-06 | 2019-03-12 | 丹阳蓝思信息技术有限公司 | A kind of gas assisted molding device of dedicated glass fiber enhanced nylon |
| CN211105415U (en) * | 2019-11-25 | 2020-07-28 | 丰城市丰美塑业有限公司 | Injection mold is used in plastic products production |
| CN113183399A (en) * | 2021-04-01 | 2021-07-30 | 深圳市泰兴源科技有限公司 | Bent pipe forming die |
| CN215242522U (en) * | 2021-06-15 | 2021-12-21 | 深圳市铭鑫旭业精密模具制品有限公司 | Silica gel cover forming die for gas-assisted forming |
-
2022
- 2022-01-17 CN CN202210048031.9A patent/CN114379020B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10337744A (en) * | 1997-06-09 | 1998-12-22 | Mitsubishi Eng Plast Kk | Manufacture of fiber reinforced thermoplastic resin molded product, and molded product |
| US20030224080A1 (en) * | 2000-04-21 | 2003-12-04 | Ronald Thomas | Automated pin for gas assisted injection molding |
| CN109454904A (en) * | 2017-09-06 | 2019-03-12 | 丹阳蓝思信息技术有限公司 | A kind of gas assisted molding device of dedicated glass fiber enhanced nylon |
| CN211105415U (en) * | 2019-11-25 | 2020-07-28 | 丰城市丰美塑业有限公司 | Injection mold is used in plastic products production |
| CN113183399A (en) * | 2021-04-01 | 2021-07-30 | 深圳市泰兴源科技有限公司 | Bent pipe forming die |
| CN215242522U (en) * | 2021-06-15 | 2021-12-21 | 深圳市铭鑫旭业精密模具制品有限公司 | Silica gel cover forming die for gas-assisted forming |
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| Publication number | Publication date |
|---|---|
| CN114379020B (en) | 2024-04-30 |
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