CN114220674A - Novel impregnation device for solid-liquid mixed capacitor - Google Patents
Novel impregnation device for solid-liquid mixed capacitor Download PDFInfo
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- CN114220674A CN114220674A CN202111559548.6A CN202111559548A CN114220674A CN 114220674 A CN114220674 A CN 114220674A CN 202111559548 A CN202111559548 A CN 202111559548A CN 114220674 A CN114220674 A CN 114220674A
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- 238000005470 impregnation Methods 0.000 title claims abstract description 82
- 239000007788 liquid Substances 0.000 title claims abstract description 39
- 239000003990 capacitor Substances 0.000 title claims abstract description 36
- 239000003792 electrolyte Substances 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000002791 soaking Methods 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000007598 dipping method Methods 0.000 claims description 13
- 238000007654 immersion Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/04—Drying; Impregnating
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- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention relates to the technical field of impregnation devices, in particular to a novel impregnation device for a solid-liquid mixed capacitor, which comprises: the outer part of the soaking machine is rotatably connected with a sealing structure; the adjusting mechanism is rotatably connected to one side of the outside of the soaking machine; the vacuumizing assembly is fixedly arranged at one end, close to the adjusting mechanism, of the outer part of the impregnation machine; through the device, can improve the device condenser and contain the leakproofness of soaking in the processing procedure, can shorten the required time of condenser in containing the processing procedure that soaks greatly, and can realize that electrolyte ration pours into, can practice thrift the cost to a certain extent, avoid extravagant, and through two cam normal running fit, can improve the efficiency that contains the quick-witted evacuation of soaking.
Description
Technical Field
The invention relates to the technical field of impregnation devices, in particular to a novel impregnation device for a solid-liquid mixed capacitor.
Background
The solid-liquid hybrid capacitor is an electrolytic capacitor integrating the advantages of conventional liquid and solid electrolytic capacitors, however, the conventional solid-liquid hybrid capacitor has at least the problems of large Leakage Current (LC), high Equivalent Series Resistance (ESR), poor uniformity, high fraction defective and the like.
The prior capacitor has poor sealing performance in the impregnation treatment, so that the capacitor needs to consume a large amount of time in the impregnation treatment process, and the prior impregnation device cannot quantitatively control the liquid outlet amount of the electrolyte, so that the efficiency of the capacitor in the processing process is low, and further improvement is needed on the basis.
Disclosure of Invention
The invention aims to provide a novel impregnation device for a solid-liquid mixed capacitor, 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 novel impregnation device of mixed electric capacity of solid-liquid, the novel impregnation device of mixed electric capacity of solid-liquid includes:
the capacitor impregnation device comprises an impregnation machine, wherein a sealing structure is rotatably connected to the outside of the impregnation machine and used for improving the sealing property of the capacitor in the impregnation treatment process;
the adjusting mechanism is rotatably connected to one side of the outside of the impregnation machine and is used for controlling the capacity of electrolyte in the impregnation machine;
and the vacuumizing assembly is fixedly arranged at one end, close to the adjusting mechanism, of the outside of the impregnation machine and is used for vacuumizing the inside of the impregnation machine.
As a further scheme of the invention: the seal structure includes:
the apron, the apron is articulated with the one end that contains the dipping machine and keep away from ground, and the both sides that contain the dipping machine are provided with the cylinder, and the both ends of cylinder are articulated with the one end that contains the dipping machine and be close to ground and apron middle part respectively
The adjusting buckle is rotatably connected to one side of the soaking machine far away from the adjusting mechanism, and the middle of the adjusting buckle is hinged to a U-shaped buckle.
As a further scheme of the invention: the apron is close to the one end fixedly connected with draw-in groove of adjusting the knot, U type buckle and draw-in groove joint.
As a further scheme of the invention: one side of the impregnation machine close to the adjusting mechanism is fixedly provided with a liquid injection pipe, and the middle part of the liquid injection pipe is provided with an electromagnetic control valve.
As a further scheme of the invention: the adjustment mechanism includes:
the limiting pipe is fixedly connected to one end of the outer part of the immersion machine, a first adjusting rod is connected to the inner part of the limiting pipe in a sliding mode, a piston is fixedly connected to one end, located inside the limiting pipe, of the first adjusting rod, and the piston slides along the inner wall of the limiting pipe;
the connecting plate is fixedly connected to the outside of the impregnation machine, one side, located on the impregnation machine, of the connecting plate is rotatably connected with a rotating rod, one end of the rotating rod is rotatably connected with an adjusting plate, one end, close to the adjusting plate, of the adjusting rod I is hinged with the adjusting plate, one end, far away from the adjusting rod I, of the adjusting plate is hinged with an adjusting rod II, and the adjusting rod II is vertically arranged and is in sliding connection with the connecting plate;
and the control button is fixedly arranged at one end of the connecting plate, which is positioned at the second adjusting rod, and is in sliding fit with the second adjusting rod, and the output end of the control button is in control connection with the input end of the electromagnetic control valve.
As a further scheme of the invention: the evacuation assembly includes:
the vacuum pump is fixedly arranged on one side of the connecting plate, which is positioned on the adjusting mechanism, and is connected with the immersion machine through a connecting pipe;
the connecting shaft is rotatably connected inside the vacuum pump and symmetrically arranged around the vacuum pump, the connecting shaft is located at one end inside the vacuum pump and fixedly connected with cams, the two cams are in running fit, one end of the connecting shaft, which is located outside the vacuum pump, is fixedly connected with a transmission gear, and the two transmission gears are in running fit.
Compared with the prior art, the invention has the beneficial effects that:
the novel impregnation device for the solid-liquid mixed capacitor is characterized in that a capacitor to be subjected to impregnation treatment is placed inside an impregnation machine, a cover plate can rotate around a hinged point of the impregnation machine through the expansion and contraction of an air cylinder to seal the impregnation machine, meanwhile, a U-shaped buckle is clamped with a clamping groove, an adjusting buckle is rotated to further seal the cover plate, electrolyte is injected into the impregnation machine through an injection pipe after the sealing of the impregnation machine is completed, the liquid level of the electrolyte gradually rises along with the injection of the electrolyte, when the height of a limiting pipe is increased, a piston can be driven to slide along the inner wall of the limiting pipe due to the self gravity of the electrolyte, a first adjusting rod can be driven to slide along the horizontal direction, a first adjusting rod can be driven to rotate around a connecting plate due to the sliding of the first adjusting rod along the horizontal direction, an adjusting plate is driven to rotate around one end of a rotating rod, and a second adjusting rod can be driven to slide along the vertical direction, the top end of the second adjusting rod can be contacted with the control button, the control button is in control connection with the electromagnetic control valve, when electrolyte reaches the horizontal plane where the limiting pipe is located, the electromagnetic control valve is closed through the control button, the electrolyte inside the impregnation box can be quantified, after the electrolyte is injected, a connecting shaft is driven to rotate through a driving piece, double cams inside the vacuum pump can be driven to rotate and cooperate due to the transmission and cooperation of a transmission gear at one end of the two connecting shafts outside the vacuum pump, gas inside the impregnation machine is pumped to a vacuum state through the connecting pipe, the sealing performance of the capacitor in the impregnation treatment process can be improved through the device, the required time of the capacitor in the impregnation treatment process can be greatly shortened, the electrolyte can be quantitatively injected, the cost can be saved to a certain extent, the waste is avoided, and the double cams are in rotating and cooperating, the vacuum pumping efficiency of the dipping machine can be improved.
Drawings
Fig. 1 is a schematic structural diagram of the novel impregnation device of the solid-liquid mixed capacitor of the present invention.
Fig. 2 is a schematic diagram of the internal structure of a vacuum pump in the novel impregnation device with solid-liquid mixed capacitance of the present invention.
Fig. 3 is a schematic diagram of an external structure of a vacuum pump in the novel impregnation device with solid-liquid mixed capacitance of the present invention.
Fig. 4 is a schematic view of the internal structure of a limiting pipe in the novel impregnation device of the solid-liquid mixed capacitor of the invention.
Fig. 5 is a schematic diagram of a three-dimensional structure of a U-shaped buckle in the novel impregnation device for the solid-liquid mixed capacitor of the invention.
Fig. 6 is a schematic view of a partial enlarged structure at a position a in fig. 1 of the novel impregnation device for a solid-liquid mixed capacitor according to the present invention.
In the figure: 1-containing dipping machine, 2-cover plate, 21-clamping groove, 3-cylinder, 4-adjusting buckle, 41-U type buckle, 5-vacuum pump, 6-connecting pipe, 7-connecting shaft, 8-cam, 9-transmission gear, 10-spacing pipe, 11-adjusting rod I, 12-adjusting plate, 13-adjusting rod II, 14-connecting plate, 15-rotating rod, 16-liquid injection pipe, 17-electromagnetic control valve, 18-piston, 19-elastic piece and 20-control button.
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.
Example 1
As shown in fig. 1 to 6, in the embodiment of the present invention, a novel impregnation device for a solid-liquid mixed capacitor includes:
the capacitor impregnation device comprises an impregnation machine 1, wherein a sealing structure is rotatably connected to the outside of the impregnation machine 1 and is used for improving the sealing property of the capacitor in the impregnation treatment process;
the adjusting mechanism is rotatably connected to one side of the outside of the impregnation machine 1 and is used for controlling the capacity of electrolyte in the impregnation machine 1;
the vacuumizing assembly is fixedly arranged at one end, close to the adjusting mechanism, of the outer part of the impregnation machine 1 and is used for vacuumizing the inner part of the impregnation machine 1;
through the device, can improve the leakproofness of device condenser in the processing procedure that soaks, can shorten the required time of condenser in the processing procedure that soaks greatly, and can realize that electrolyte ration pours into, can practice thrift the cost to a certain extent, avoid extravagant, and through 8 normal running fit of twin-cam, can improve the efficiency that contains 1 evacuation of dipping machine.
As shown in fig. 1 and 5, the sealing structure includes:
The adjusting buckle 4 is rotatably connected to one side, away from the adjusting mechanism, of the immersion machine 1, and the middle part of the adjusting buckle 4 is hinged with a U-shaped buckle 41;
one end of the cover plate 2 close to the adjusting buckle 4 is fixedly connected with a clamping groove 21, and the U-shaped buckle 41 is clamped with the clamping groove 21;
a liquid injection pipe 16 is fixedly installed on one side of the impregnation machine 1 close to the adjusting mechanism, and an electromagnetic control valve 17 is arranged in the middle of the liquid injection pipe 16;
contain soaking the condenser of processing and place contain and soak 1 insidely of machine, can make apron 2 rotate around containing 1 pin joint of machine of soaking through cylinder 3 is flexible, can seal containing soaking machine 1, meanwhile, with U type buckle 41 and draw-in groove 21 joint, rotate simultaneously and adjust and detain 4, can make apron 2 further sealed.
As shown in fig. 1, 4 and 6, the adjusting mechanism includes:
the limiting pipe 10 is fixedly connected to one end of the outer portion of the immersion machine 1, a first adjusting rod 11 is connected to the inner portion of the limiting pipe 10 in a sliding mode, a piston 18 is fixedly connected to one end, located inside the limiting pipe 10, of the first adjusting rod 11, and the piston 18 slides along the inner wall of the limiting pipe 10;
the connecting plate 14 is fixedly connected to the outside of the impregnation machine 1, one side, located on the impregnation machine 1, of the connecting plate 14 is rotatably connected with a rotating rod 15, one end of the rotating rod 15 is rotatably connected with an adjusting plate 12, one end, close to the adjusting plate 12, of the adjusting rod I11 is hinged to the adjusting plate 12, one end, far away from the adjusting rod I11, of the adjusting plate 12 is hinged to an adjusting rod II 13, and the adjusting rod II 13 is vertically arranged and is in sliding connection with the connecting plate 14;
the control button 20 is fixedly arranged at one end, located at the second adjusting rod 13, of the connecting plate 14 and is in sliding fit with the second adjusting rod 13, and the output end of the control button 20 is in control connection with the input end of the electromagnetic control valve 17;
after the sealing of the impregnator 1 is finished, electrolyte is injected into the impregnator 1 through the liquid injection pipe 16, the liquid level of the electrolyte is gradually raised along with the injection of the electrolyte, when the liquid level is raised to the height of the limiting pipe 10, due to the self-gravity of the electrolyte, the piston 18 can be driven to slide along the inner wall of the limiting pipe 10, and then the adjusting rod I11 can be driven to slide along the horizontal direction, as the first adjusting rod 11 slides along the horizontal direction, the rotating rod 15 can be driven to rotate around the connecting plate 14, meanwhile, the adjusting plate 12 is driven to rotate around one end of the rotating rod 15, thereby driving the second adjusting rod 13 to slide along the vertical direction, enabling the top end of the second adjusting rod 13 to be in contact with the control button 20, and because the control button 20 is in control connection with the electromagnetic control valve 17, when the electrolyte reaches the horizontal plane where the limiting pipe 10 is located, the electromagnetic control valve 17 is closed by the control button 20, and the electrolyte in the impregnation tank can be further quantified.
As shown in fig. 1-3, the evacuation assembly includes:
the vacuum pump 5 is fixedly arranged on one side of the connecting plate 14, which is positioned on the adjusting mechanism, and the vacuum pump 5 is connected with the immersion machine 1 through a connecting pipe 6;
the connecting shaft 7 is rotationally connected inside the vacuum pump 5 and symmetrically arranged relative to the vacuum pump 5, one end of the connecting shaft 7, which is positioned inside the vacuum pump 5, is fixedly connected with a cam 8, the two cams 8 are in running fit, one end of the connecting shaft 7, which is positioned outside the vacuum pump 5, is fixedly connected with a transmission gear 9, and the two transmission gears 9 are in running fit;
after the injection of electrolyte is completed, a connecting shaft 7 is driven to rotate through a driving piece, and because the two connecting shafts 7 are in transmission fit with a transmission gear 9 at one end outside the vacuum pump 5, the two cams 8 inside the vacuum pump 5 can be driven to rotate and fit with each other, and the gas inside the immersion machine 1 is pumped to a vacuum state through the connecting pipe 6.
Example 2
As shown in fig. 1 and fig. 6, in addition to the above technical solutions, the present invention provides another embodiment, which is different from the above embodiment in that: the elastic piece 19 is sleeved outside the second adjusting rod 13, and two ends of the elastic piece 19 are respectively and fixedly connected with the second adjusting rod 13 and the connecting plate 14, so that the second adjusting rod 13 can slide in the middle of the connecting plate 14 more smoothly.
The working principle of the invention is as follows:
in this embodiment, a capacitor to be subjected to impregnation treatment is placed inside the impregnation machine 1, the cover plate 2 can be rotated around a hinge point of the impregnation machine 1 by stretching and contracting the cylinder 3, the impregnation machine 1 can be sealed, meanwhile, the U-shaped buckle 41 is clamped with the clamping groove 21, the adjusting buckle 4 is rotated, the cover plate 2 can be further sealed, after the sealing of the impregnation machine 1 is completed, electrolyte is injected into the impregnation machine 1 through the liquid injection pipe 16, the liquid level of the electrolyte gradually rises along with the injection of the electrolyte, when the height of the limiting pipe 10 is raised, the piston 18 can be driven to slide along the inner wall of the limiting pipe 10 due to the self-gravity of the electrolyte, the adjusting rod 11 can be driven to slide along the horizontal direction, the rotating rod 15 can be driven to rotate around the connecting plate 14 due to the sliding of the adjusting rod 11 along the horizontal direction, and the adjusting plate 12 can be driven to rotate around one end of the rotating rod 15, and then can drive the second adjusting rod 13 to slide along the vertical direction, can make the top of the second adjusting rod 13 contact with the control button 20, and because the control button 20 is connected with the electromagnetic control valve 17 in a control way, when the electrolyte reaches the horizontal plane where the limiting pipe 10 is located, the electromagnetic control valve 17 is closed through the control button 20, and then the electrolyte inside the impregnation box can be quantified, after the injection of the electrolyte is completed, the driving piece drives a connecting shaft 7 to rotate, because the transmission gear 9 at one end of the two connecting shafts 7 outside the vacuum pump 5 is in transmission fit, the double cam 8 inside the vacuum pump 5 can be driven to be in transmission fit, the gas inside the impregnation machine 1 is pumped to a vacuum state through the connecting pipe 6, through the device, the sealing performance of the device capacitor in the impregnation treatment process can be improved, and the required time of the capacitor in the impregnation treatment process can be greatly shortened, and can realize that electrolyte ration pours into, can practice thrift the cost to a certain extent, avoid extravagant, and through 8 normal running fit of twin cam, can improve the efficiency that contains the evacuation of dipping machine 1.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a novel impregnation device of solid-liquid mixed capacitance which characterized in that: the novel impregnation device of solid-liquid mixed capacitor comprises:
the capacitor impregnation device comprises an impregnation machine, wherein a sealing structure is rotatably connected to the outside of the impregnation machine and used for improving the sealing property of the capacitor in the impregnation treatment process;
the adjusting mechanism is rotatably connected to one side of the outside of the impregnation machine and is used for controlling the capacity of electrolyte in the impregnation machine;
and the vacuumizing assembly is fixedly arranged at one end, close to the adjusting mechanism, of the outside of the impregnation machine and is used for vacuumizing the inside of the impregnation machine.
2. The novel impregnation device for the solid-liquid mixed capacitor according to claim 1, characterized in that: the seal structure includes:
the apron, the apron is articulated with the one end that contains the dipping machine and keep away from ground, and the both sides that contain the dipping machine are provided with the cylinder, and the both ends of cylinder are articulated with the one end that contains the dipping machine and be close to ground and apron middle part respectively
The adjusting buckle is rotatably connected to one side of the soaking machine far away from the adjusting mechanism, and the middle of the adjusting buckle is hinged to a U-shaped buckle.
3. The novel impregnation device for the solid-liquid mixed capacitor according to claim 2, characterized in that: the apron is close to the one end fixedly connected with draw-in groove of adjusting the knot, U type buckle and draw-in groove joint.
4. The novel impregnation device for the solid-liquid mixed capacitor according to claim 1, characterized in that: one side of the impregnation machine close to the adjusting mechanism is fixedly provided with a liquid injection pipe, and the middle part of the liquid injection pipe is provided with an electromagnetic control valve.
5. The novel impregnation device for the solid-liquid mixed capacitor according to claim 4, wherein: the adjustment mechanism includes:
the limiting pipe is fixedly connected to one end of the outer part of the immersion machine, a first adjusting rod is connected to the inner part of the limiting pipe in a sliding mode, a piston is fixedly connected to one end, located inside the limiting pipe, of the first adjusting rod, and the piston slides along the inner wall of the limiting pipe;
the connecting plate is fixedly connected to the outside of the impregnation machine, one side, located on the impregnation machine, of the connecting plate is rotatably connected with a rotating rod, one end of the rotating rod is rotatably connected with an adjusting plate, one end, close to the adjusting plate, of the adjusting rod I is hinged with the adjusting plate, one end, far away from the adjusting rod I, of the adjusting plate is hinged with an adjusting rod II, and the adjusting rod II is vertically arranged and is in sliding connection with the connecting plate;
and the control button is fixedly arranged at one end of the connecting plate, which is positioned at the second adjusting rod, and is in sliding fit with the second adjusting rod, and the output end of the control button is in control connection with the input end of the electromagnetic control valve.
6. The novel impregnation device for the solid-liquid mixed capacitor according to claim 1, characterized in that: the evacuation assembly includes:
the vacuum pump is fixedly arranged on one side of the connecting plate, which is positioned on the adjusting mechanism, and is connected with the immersion machine through a connecting pipe;
the connecting shaft is rotatably connected inside the vacuum pump and symmetrically arranged around the vacuum pump, the connecting shaft is located at one end inside the vacuum pump and fixedly connected with cams, the two cams are in running fit, one end of the connecting shaft, which is located outside the vacuum pump, is fixedly connected with a transmission gear, and the two transmission gears are in running fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111559548.6A CN114220674B (en) | 2021-12-20 | 2021-12-20 | Solid-liquid mixed capacitor impregnation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111559548.6A CN114220674B (en) | 2021-12-20 | 2021-12-20 | Solid-liquid mixed capacitor impregnation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114220674A true CN114220674A (en) | 2022-03-22 |
| CN114220674B CN114220674B (en) | 2024-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111559548.6A Active CN114220674B (en) | 2021-12-20 | 2021-12-20 | Solid-liquid mixed capacitor impregnation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118147662A (en) * | 2024-02-29 | 2024-06-07 | 山东小鸭集团小家电有限公司 | Hypochlorous acid sterilizing water device suitable for industrial production |
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| CN209000765U (en) * | 2018-09-03 | 2019-06-18 | 四川峻豪电子科技有限公司 | A kind of environment-friendly type impregnation equipment of small size |
| CN210378778U (en) * | 2019-08-22 | 2020-04-21 | 东莞士格电子集团有限公司 | Improved capacitor dipping machine |
| CN111295728A (en) * | 2020-01-17 | 2020-06-16 | 诚捷智能装备(东莞)有限公司 | Impregnation device |
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2021
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| CN201226299Y (en) * | 2008-05-27 | 2009-04-22 | 苏州工业职业技术学院 | Dipping apparatus for aluminum electrolysis capacitor |
| JP2010109162A (en) * | 2008-10-30 | 2010-05-13 | Jcc Engineering Co Ltd | Method of manufacturing electrolytic capacitor, impregnation device for electrolytic capacitor, and machine for assembling electrolytic capacitor |
| JP2014179426A (en) * | 2013-03-14 | 2014-09-25 | Shimadzu Corp | Vacuum impregnation apparatus |
| CN209000765U (en) * | 2018-09-03 | 2019-06-18 | 四川峻豪电子科技有限公司 | A kind of environment-friendly type impregnation equipment of small size |
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| CN114220674B (en) | 2024-09-06 |
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