Device and method for preparing cathode plate of high-performance tantalum electrolytic capacitor

Abstract

The invention relates to the technical field of preparation of tantalum capacitor cathode plates, in particular to a preparation device and method of a high-performance tantalum electrolytic capacitor cathode plate, and mainly comprises a support, impregnation spin-drying rollers are symmetrically arranged on the support, and a first conveying belt and a second conveying belt are respectively arranged between the impregnation spin-drying rollers. Tantalum capacitor workpieces are placed on the first conveying belt and the second conveying belt, synchronous rods in the separation mechanism are distributed in a high-low staggered mode, the synchronous rods on the two sides of the tantalum capacitor workpieces ascend and descend in a staggered mode, and the tantalum capacitor workpieces are effectively separated in a reciprocating mode. And the position of the moving block is adjusted through a bidirectional lead screw in the adjusting mechanism, so that cylindrical tantalum capacitor workpieces of different models are adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of preparing cathode sheets of tantalum capacitors, and in particular to a device and method for preparing cathode sheets of high-performance tantalum electrolytic capacitors. Background Art

[0002] Tantalum electrolytic capacitors are primarily composed of a tantalum metal anode, a tantalum pentoxide (Ta2O5) dielectric layer, and a cathode material. The cathode, a key component of the capacitor, has a direct impact on its performance. Tantalum electrolytic capacitors often use manganese dioxide (MnO2) as the cathode, which exhibits high conductivity and stability. Capacitor impregnation dryers are key equipment used to remove excess impregnation fluid (such as conductive polymer or electrolyte) during capacitor production. Their core principle is centrifugal dehydration, efficiently expelling the liquid inside the capacitor from its pores through high-speed rotation.

[0003] When in use, the dryer is equipped with a high-speed rotating dehydration barrel. When the material rotates with the dehydration barrel, the centrifugal force throws the impregnation liquid in the pores of the material outward, achieving rapid dehydration. Since the tantalum capacitors are arranged equidistantly in the drying barrel, the tantalum capacitors can be heated evenly, improving their drying efficiency. Avoid local overheating or overcooling to ensure the quality of drying. However, during the loading process of columnar capacitors, due to their cylindrical structure, they are prone to rolling when stacking or conveying, resulting in mutual squeezing. The capacitors are easily squeezed and deformed due to vibration or collision, causing damage or breakdown of the dielectric layer, which further causes the tantalum capacitor to short-circuit during subsequent use, causing a sudden drop in system voltage, affecting the normal operation of electrical equipment. Summary of the Invention

[0004] The object of the present invention is to provide a device and method for preparing a cathode sheet of a high-performance tantalum electrolytic capacitor, so as to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for preparing a cathode sheet of a high-performance tantalum electrolytic capacitor comprises: a bracket, on which impregnation and drying rollers are symmetrically arranged, a first conveyor belt and a second conveyor belt are respectively arranged between the impregnation and drying rollers, and tantalum capacitor workpieces are placed on the first conveyor belt and the second conveyor belt, and further comprises:

[0007] A separation mechanism is provided on the bracket, the separation mechanism includes a moving block provided above the conveyor belt, a synchronization block is provided at the bottom of the moving block, and synchronization rods are symmetrically provided on the synchronization block. The separation mechanism is used to separate the tantalum capacitor workpieces one by one and intermittently add fleece to the impregnation and drying drum;

[0008] Adjusting mechanism, the adjusting mechanism is arranged on the separating mechanism, the adjusting mechanism includes a bidirectional lead screw penetrating through the moving block, and the adjusting mechanism is used for precisely adjusting the spacing according to the size of the tantalum capacitor workpiece.

[0009] Preferably, rotating blocks are equidistantly and rotatably connected to the inner circumference of the impregnation and spin-drying drum, a clamping plate one and a clamping plate two are inclined between every two of the rotating blocks, and the included angle between the clamping plate one and the clamping plate two is an acute angle.

[0010] Preferably, a connecting shaft is movably arranged in the middle of the impregnation and spin-drying drum, a tray is fixedly arranged on the outer surface of the connecting shaft, a cover plate is fixedly arranged at the top of the connecting shaft, and the connecting shaft penetrates through the impregnation and spin-drying drum.

[0011] Preferably, a rotating clamping cylinder is arranged between the impregnation and spin-drying drums, a plurality of clamping jaws are arranged on the rotating clamping cylinder, and a push plate is arranged on one side of the rotating clamping cylinder.

[0012] Preferably, the separating mechanism further includes an L-shaped plate fixedly arranged on the bracket, a telescopic cylinder is fixedly arranged on the L-shaped plate, an output shaft is movably arranged on the telescopic cylinder, and one end of the output shaft is fixedly connected with a fixed block.

[0013] Preferably, a chute is penetrated and opened on the L-shaped plate, the outer surface of the fixed block slides in the chute, guide rails are symmetrically and fixedly arranged at the bottom of the L-shaped plate, a slider is slidably connected to the guide rails, the top of the slider is fixedly connected with the fixed block, and a resisting block is fixedly arranged at the bottom of the slider.

[0014] Preferably, a plurality of fixing rods are symmetrically and fixedly arranged at the bottom of the L-shaped plate, a fixing plate is fixedly arranged at the bottom of the plurality of fixing rods, a moving block in the middle of the fixing plate is movably connected with the fixing plate, and a penetrating rod is penetrated and slidably arranged in the middle of the moving block.

[0015] Preferably, a spring is sleeved on the outer surface of the penetrating rod, a limiting block is fixedly arranged at the top of the penetrating rod, connecting plates are symmetrically and fixedly arranged on the penetrating rod, a roller is rotatably arranged between the connecting plates, and the bottom of the penetrating rod is fixedly connected with a synchronous block.

[0016] Preferably, the adjusting mechanism further includes a groove penetrated through the fixing plate, fixing strips are symmetrically and fixedly arranged in the groove, the fixing strips are slidably connected with the moving block, the bidirectional lead screw on the moving block penetrates through the fixing plate, the bidirectional lead screw is threadedly connected with the fixing plate and the moving block, and a knob is fixedly arranged at the end of the bidirectional lead screw.

[0017] A preparation method of a high-performance tantalum electrolytic capacitor cathode sheet, which is used in the preparation device of the high-performance tantalum electrolytic capacitor cathode sheet described in any one of the above, includes the following steps:

[0018] S1: Raw material preparation and forming: Tantalum powder and tantalum wire (as the anode lead) are mixed and a binder is added, then molded into a cylindrical or rectangular block-shaped anode body. Next, the sintered tantalum capacitor workpiece is immersed in dilute nitric acid solution, and an electric current is applied to decompose nitric acid to produce oxygen, forming a dense Ta2O5 (tantalum pentoxide) oxide film on the surface of the anode body as the dielectric layer.

[0019] S2: Impregnation and drying: The energized tantalum capacitor workpieces are conveyed one by one through the separating mechanism on conveyor belt 1 to the impregnation and spin-drying drum, where they are immersed in manganese nitrate solution to allow the solution to penetrate into the pores of the tantalum capacitor workpieces. The high-speed rotation of the impregnation and spin-drying drum generates centrifugal force to throw off the excess solution and promote the uniform distribution of manganese nitrate in the pores. The impregnation and spin-drying process is repeated multiple times to ensure that manganese dioxide fully fills the pores, forming the cathode layer.

[0020] S3: Heat treatment and decomposition: The impregnated tantalum capacitor workpieces on conveyor belt 2 are subjected to high-temperature heat treatment through the impregnation and spin-drying drum to decompose manganese nitrate to form manganese dioxide, completing the formation of the cathode plate of the tantalum capacitor workpiece.

[0021] S4: The tantalum capacitor workpieces in the impregnation and spin-drying drum are clamped and transferred to conveyor belt 2 to complete the preparation of the cathode plate of the tantalum electrolytic capacitor.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] In the present invention, the synchronous rods in the separating mechanism are distributed in a staggered manner. The synchronous rods on both sides of the tantalum capacitor workpiece alternately move up and down, reciprocating in this way, and effectively separating the tantalum capacitor workpieces. The separating mechanism can ensure that each tantalum capacitor workpiece maintains a certain distance during the conveying process, avoiding mutual extrusion and collision, thereby ensuring that the workpieces are subjected to consistent conditions in subsequent processing and improving the product quality. At the same time, it avoids friction and collision between workpieces, reduces damage such as surface scratches and deformation, and ensures the appearance and performance of the product.

[0024] In the present invention, the position of the moving block is adjusted by the bidirectional lead screw in the adjusting mechanism, so that the moving block drives the synchronous rod at the bottom to move synchronously, adapting to the separating and feeding operations of cylindrical tantalum capacitor workpieces of different models. The bidirectional lead screw drives the movable block to move synchronously along the groove through the fixed strip, and the movement directions of the two movable blocks are opposite. The position of the moving block can be adjusted to adapt to cylindrical tantalum capacitor workpieces of different models. The design of the bidirectional lead screw ensures the synchronism and stability of rotation, improving the flexibility and applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a schematic diagram of the overall structure of the present invention from another perspective;

[0027] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at position A in the present invention;

[0028] Figure 4 Schematic diagram of the overall structure of the impregnation and spin-drying drum of the present invention;

[0029] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at position B in the present invention;

[0030] Figure 6 Schematic diagram of the overall structure of the partitioning mechanism and the adjusting mechanism of the present invention;

[0031] Figure 7 Schematic diagram of the partial structure of the partitioning mechanism of the present invention;

[0032] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at position C in the present invention.

[0033] In the figure:

[0034] 1. Bracket; 2. Impregnation and spin-drying drum; 3. Rotating block; 4. First splint; 5. Second splint; 6. Connecting shaft; 7. Tray; 8. Cover plate; 9. First conveyor belt; 10. Second conveyor belt; 11. Tantalum capacitor workpiece; 12. Rotating clamping cylinder; 13. Claw; 14. Pushing plate; 15. Partitioning mechanism; 16. L-shaped plate; 17. Telescopic cylinder; 18. Output shaft; 19. Fixed block; 20. Chute; 21. Guide rail; 22. Slide block; 23. Block; 24. Fixed rod; 25. Fixed plate; 26. Moving block; 27. Through rod; 28. Spring; 29. Limiting block; 30. Connecting plate; 31. Roller; 32. Synchronization block; 33. Synchronization rod; 34. Adjusting mechanism; 35. Groove; 36. Fixed strip; 37. Bi-directional lead screw; 38. Knob. Detailed implementation manners

[0035] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present application in detail with reference to the drawings and in combination with the embodiments.

[0036] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0037] Please refer to Figures 1 to 8 As shown, the present application provides a device for preparing high-performance tantalum electrolytic capacitor cathode sheets, including: a bracket 1, a symmetrically arranged impregnation drying drum 2 on the bracket 1, the energized tantalum capacitor workpiece 11 is immersed in a manganese nitrate solution, the solution penetrates into the pores of the anode body, and the centrifugal force is generated by the high-speed rotation of the impregnation drying machine to remove excess solution and promote the uniform distribution of manganese nitrate. Repeat the impregnation and drying process to ensure that manganese dioxide fully fills the pores and forms a uniform cathode layer. Conveyor belt 1 9 and conveyor belt 2 10 are respectively provided between the impregnation drying drums 2, and tantalum capacitor workpiece 11 is placed on conveyor belt 1 9 and conveyor belt 2 10 to achieve continuous and uniform transmission of the workpiece. The material of the conveyor belt is selected according to the characteristics of the workpiece to ensure stability and durability during the transmission process.

[0038] Please refer to Figures 1 to 8 As shown, the present application provides a device for preparing high-performance tantalum electrolytic capacitor cathode sheets, which also includes: a separation mechanism 15, the separation mechanism 15 is arranged on a bracket 1, the separation mechanism 15 includes a moving block 26 arranged above a conveyor belt 9, a synchronization block 32 is provided at the bottom of the moving block 26, and synchronization rods 33 are symmetrically provided on the synchronization block 32. The separation mechanism 15 is used to separate the tantalum capacitor workpieces 11 one by one and intermittently clamp them into the impregnation and drying drum 2; by separating the continuously arranged tantalum capacitor workpieces 11 one by one, it is ensured that the workpieces enter the impregnation and drying drum 2 in an orderly manner. The intermittent movement of the moving block 26 is then controlled by the synchronization rod 33 to achieve precise conveying and positioning of the workpieces.

[0039] Please refer to Figures 1 to 8 As shown, the present application provides a device for preparing high-performance tantalum electrolytic capacitor cathode sheets, which also includes: an adjustment mechanism 34, which is arranged on the separation mechanism 15, and the adjustment mechanism 34 includes a bidirectional screw 37 that is arranged through the moving block 26, and the adjustment mechanism 34 is used to accurately adjust the spacing according to the size of the tantalum capacitor workpiece 11. According to the size of the tantalum capacitor workpiece 11, the spacing between the synchronization rods 33 is adjusted by the bidirectional screw 37 to ensure the stability and consistency of the workpiece during the conveying process. It adapts to the processing requirements of workpieces of different specifications and improves the versatility and applicability of the equipment.

[0040] The immersion and drying drum 2 is connected to rotating blocks 3 at equal intervals around its inner circumference. Clamping plates 1 (4) and 2 (5) are positioned at an angle between each pair of rotating blocks. Clamping plates 1 (4) and 2 (5) form an acute angle. A connecting shaft 6 is movably mounted in the center of the immersion and drying drum 2. A tray 7 is fixedly mounted on its outer surface, and a cover plate 8 is fixedly mounted on its top. The connecting shaft 6 extends through the immersion and drying drum 2. A rotating clamping cylinder 12 is positioned between the immersion and drying drums 2. It is equipped with several clamping jaws 13, and a push plate 14 is attached to one side of the rotating clamping cylinder 12.

[0041] Through the clamping plate one 4 and the clamping plate two 5 which are inclined between every two rotating blocks 3, and the included angle is an acute angle, for fixing the tantalum capacitor workpiece 11. When the cover plate 8 covers and seals the top of the impregnation and centrifugal drying drum 2 driven by the connecting shaft 6, the rotating block 3 is synchronously driven to rotate, and the tantalum capacitor workpiece 11 is clamped obliquely, so that the impregnation liquid on the surface of the workpiece is evenly thrown out, further improving the stability and efficiency in the centrifugal drying process.

[0042] Further, please refer to Figures 2 to 8 As shown, the partitioning mechanism 15 further includes an L-shaped plate 16 fixedly arranged on the bracket 1. An expansion cylinder 17 is fixedly arranged on the L-shaped plate 16. An output shaft 18 is movably arranged on the expansion cylinder 17. One end of the output shaft 18 is fixedly connected with a fixed block 19. A chute 20 is penetrated and opened on the L-shaped plate 16. The outer surface of the fixed block 19 slides in the chute 20. Guide rails 21 are symmetrically and fixedly arranged at the bottom of the L-shaped plate 16. A slider 22 is slidably connected to the guide rails 21. The top of the slider 22 is fixedly connected with the fixed block 19. A pressing block 23 is fixedly arranged at the bottom of the slider 22. The guide rails 21 and the slider 22 are used to ensure the linear movement of the pressing block 23, improving the stability and precision of the equipment.

[0043] Among them, a plurality of fixing rods 24 are symmetrically and fixedly arranged at the bottom of the L-shaped plate 16. A fixing plate 25 is fixedly arranged at the bottom of the plurality of fixing rods 24. A moving block 26 in the middle of the fixing plate 25 is movably connected with the fixing plate 25. A through rod 27 is penetrated and slidably arranged in the middle of the moving block 26. The fixing plate 25 serves as a support platform for the moving block 26 to ensure the linear movement and stability of the moving block 26. A spring 28 is sleeved on the outer surface of the through rod 27. A limiting block 29 is fixedly arranged at the top of the through rod 27. Connecting plates 30 are symmetrically and fixedly arranged on the through rod 27. A roller 31 is rotatably arranged between the connecting plates 30. The bottom of the through rod 27 is fixedly connected with a synchronous block 32.

[0044] Through the output shaft 18 of the expansion cylinder 17 in the partitioning mechanism 15, the slider 22 at the bottom of the fixed block 19 is driven to move linearly on the guide rail 21, and then the pressing block 23 moves synchronously. While the pressing block 23 is moving, the inclined surface of the pressing block 23 will squeeze one of the through rods 27, so that the spring 28 is compressed, and the other through rod 27 will release the pressure of the spring 28, prompting the synchronous rod 33 to be distributed at different heights, and effectively partitioning the tantalum capacitor workpiece 11. During the partitioning period, the conveyor belt one continues to operate, moving the unfettered tantalum capacitor workpiece 11 to a designated position, and pushing it onto the clamping jaw 13 by the push plate 14. After being clamped by the clamping jaw 13, it is placed into the impregnation and centrifugal drying drum 2. The partitioning mechanism 15 can ensure that each tantalum capacitor workpiece 11 maintains a certain distance during the conveying process, avoiding mutual extrusion and collision, so as to ensure that the conditions received by the workpiece in the subsequent processing are consistent, improving the product quality. At the same time, it avoids friction and collision between workpieces, reduces surface scratches, deformation and other damages, and ensures the appearance and performance of the product.

[0045] For further information, please refer to Figures 6 to 8 As shown, the adjustment mechanism 34 also includes a groove 35 that is arranged through the fixed plate 25, and a fixing bar 36 is symmetrically fixed in the groove 35. The fixing bar 36 is slidingly connected to the moving block 26. A bidirectional screw 37 on the moving block 26 passes through the fixed plate 25. The bidirectional screw 37 is threadedly connected to the fixed plate 25 and the moving block 26, and a knob 38 is fixed at the end of the bidirectional screw 37.

[0046] The position of the movable block 26 is adjusted by the bidirectional lead screw 37 in the adjustment mechanism 34, so that the movable block 26 drives the synchronous movement of the bottom synchronization rod 33, adapting to the separation and loading operation of different types of cylindrical tantalum capacitor workpieces 11. The bidirectional lead screw 37 drives the movable block to move synchronously along the groove 35 through the fixed bar 36, and the two movable blocks move in opposite directions. The position of the movable block 26 can be adjusted to adapt to different types of cylindrical tantalum capacitor workpieces 11. The design of the bidirectional lead screw 37 ensures synchronous and stable rotation, improving the flexibility and applicability of the equipment.

[0047] A method for preparing a high-performance tantalum electrolytic capacitor cathode sheet, using any of the above-mentioned devices for preparing a high-performance tantalum electrolytic capacitor cathode sheet, comprises the following steps:

[0048] S1: Raw material preparation and molding: Tantalum powder and tantalum wire (as anode lead) are mixed and a binder is added, and then molded into a cylindrical or rectangular block anode body. The sintered tantalum capacitor workpiece 11 is then immersed in a dilute nitric acid solution. Electricity is applied to decompose the nitric acid to release oxygen, forming a dense Ta2O5 (tantalum pentoxide) oxide film on the surface of the anode body as a dielectric layer.

[0049] S2: Impregnation and drying: The energized tantalum capacitor workpieces 11 are transported one by one to the impregnation and drying drum 2 through the separation mechanism 15 on the conveyor belt 9, and are immersed in the manganese nitrate solution to allow the solution to penetrate into the pores of the tantalum capacitor workpieces 11. The high-speed rotation of the impregnation and drying drum generates centrifugal force to remove excess solution and promote the uniform distribution of manganese nitrate in the pores. The impregnation and drying process is repeated multiple times to ensure that the manganese dioxide fully fills the pores to form a cathode layer.

[0050] S3: Heat treatment and decomposition: The tantalum capacitor workpiece 11 that has been impregnated on the conveyor belt 2 10 is passed through the impregnation drying drum 2 for high-temperature heat treatment, so that the manganese nitrate is decomposed to generate manganese dioxide, thereby completing the formation of the cathode sheet of the tantalum capacitor workpiece 11.

[0051] S4: The tantalum capacitor workpiece 11 in the impregnation and drying drum 2 is clamped onto the second conveyor belt 10 to complete the preparation of the tantalum electrolytic capacitor cathode sheet.

[0052] This method uses the synchronous rod 33 in the separating mechanism 15 to separate and load the tantalum capacitor workpieces 11, avoiding the mutual extrusion between the cylindrical tantalum capacitor workpieces 11 and causing the problem of jamming during loading. Then, the adjusting component adapts to the separation of tantalum capacitor workpieces 11 with different diameters, meets the processing requirements of workpieces with different specifications, and improves the versatility and applicability of the equipment.

[0053] Through all the above embodiments, the working principle of the present invention is specifically as follows:

[0054] Place the preliminarily prepared tantalum capacitor workpieces 11 on the conveyor belt 1 9, start the conveyor belt 1 9, and the conveyor belt 1 9 will drive the tantalum capacitor workpieces 11 to move one by one under the separating mechanism 15. Then, operate the telescopic cylinder 17 of the separating mechanism 15. Through the telescopic movement of the output shaft 18 of the telescopic cylinder 17, drive the fixed block 19 to slide in the chute 20, so that the abutting block 23 moves synchronously. While the abutting block 23 is moving, the inclined surface of the abutting block 23 will squeeze one of the through rods 27, and the spring 28 on the squeezed through rod 27 will be compressed, while the other through rod 27 will release the pressure of the spring 28, prompting the synchronous rods 33 to be distributed in a staggered height. The synchronous rods 33 on both sides of the tantalum capacitor workpiece 11 alternately move up and down, and so on, and effectively separate the tantalum capacitor workpieces 11. During the separation, the conveyor belt 1 continues to operate, moving the unrestricted tantalum capacitor workpieces 11 to the designated position. The clamping plate 1 4 and the clamping plate 2 5 inclined between every two rotating blocks 3, and the included angle is an acute angle, are used to fix the tantalum capacitor workpiece 11. When the cover plate 8 covers and seals the top of the impregnation and centrifugal drying drum 2 driven by the connecting shaft 6, it synchronously drives the rotating block 3 to rotate, clamping the tantalum capacitor workpiece 11 obliquely, so that the impregnating liquid on the surface of the workpiece is evenly thrown out, further improving the stability and efficiency during the centrifugal drying process. The separating mechanism 15 can ensure that each tantalum capacitor workpiece 11 maintains a certain distance during transportation, avoiding mutual extrusion and collision, so as to ensure that the conditions received by the workpieces in subsequent processing are the same, improving the product quality. At the same time, it avoids the friction and collision between workpieces, reduces surface scratches, deformation and other damages, and ensures the appearance and performance of the product; when it is necessary to replace the tantalum capacitor workpieces 11 with different sizes for loading, adjust the position of the moving block 26 through the lead screw 37 in the adjusting mechanism 34, so that the moving block 26 drives the synchronous rod 33 at the bottom to move synchronously, adapting to the separation and loading operation of cylindrical tantalum capacitor workpieces 11 of different models. The lead screw 37 drives the movable block to move synchronously along the groove 35 through the fixed strip 36, and the moving directions of the two movable blocks are opposite. The position of the moving block 26 can be adjusted to adapt to cylindrical tantalum capacitor workpieces 11 of different models. The design of the lead screw 37 ensures the synchronism and stability of rotation, improving the flexibility and applicability of the equipment.

[0055] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely exemplary; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0056] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Preparation device for cathode sheet of high-performance tantalum electrolytic capacitor, comprising: Bracket (1), impregnating and centrifuging drums (2) are symmetrically arranged on the bracket (1), a first conveyor belt (9) and a second conveyor belt (10) are respectively arranged between the impregnating and centrifuging drums (2), tantalum capacitor workpieces (11) are placed on the first conveyor belt (9) and the second conveyor belt (10), and it is characterized in that it further comprises: A separating mechanism (15), the separating mechanism (15) is arranged on the bracket (1), the separating mechanism (15) includes a moving block (26) arranged above the first conveyor belt (9), a synchronizing block (32) is arranged at the bottom of the moving block (26), synchronizing rods (33) are symmetrically arranged on the synchronizing block (32), and the separating mechanism (15) is used for separating the tantalum capacitor workpieces (11) one by one and intermittently adding them into the impregnating and centrifuging drums (2); An adjusting mechanism (34), the adjusting mechanism (34) is arranged on the separating mechanism (15), the adjusting mechanism (34) includes a bidirectional lead screw (37) penetrating through the moving block (26), and the adjusting mechanism (34) is used for precisely adjusting the spacing according to the size of the tantalum capacitor workpieces (11).

2. The preparation device of the cathode sheet of the high-performance tantalum electrolytic capacitor according to claim 1, characterized in that, Rotating blocks (3) are equidistantly and rotatably connected to the inner circumference of the impregnating and centrifuging drum (2), a first clamping plate (4) and a second clamping plate (5) are inclined between every two rotating blocks, and the included angle between the first clamping plate (4) and the second clamping plate (5) is an acute angle.

3. The preparation device of the cathode sheet of the high-performance tantalum electrolytic capacitor according to claim 2, characterized in that, A connecting shaft (6) is movably arranged in the middle of the impregnating and centrifuging drum (2), a tray (7) is fixedly arranged on the outer surface of the connecting shaft (6), a cover plate (8) is fixedly arranged at the top of the connecting shaft (6), and the connecting shaft (6) penetrates through the impregnating and centrifuging drum (2).

4. The preparation device of the cathode sheet of the high-performance tantalum electrolytic capacitor according to claim 3, characterized in that, A rotating clamping cylinder (12) is arranged between the impregnating and centrifuging drums (2), a plurality of clamping jaws (13) are arranged on the rotating clamping cylinder (12), and a push plate (14) is arranged on one side of the rotating clamping cylinder (12).

5. The preparation device of the cathode sheet of the high-performance tantalum electrolytic capacitor according to claim 1, characterized in that, The separating mechanism (15) further includes an L-shaped plate (16) fixedly arranged on the bracket (1), a telescopic cylinder (17) is fixedly arranged on the L-shaped plate (16), an output shaft (18) is movably arranged on the telescopic cylinder (17), and a fixed block (19) is fixedly connected to one end of the output shaft (18).

6. The preparation device of the cathode sheet of the high-performance tantalum electrolytic capacitor according to claim 5, characterized in that, A sliding groove (20) is penetrated and opened on the L-shaped plate (16), the outer surface of the fixed block (19) slides in the sliding groove (20), guide rails (21) are symmetrically and fixedly arranged at the bottom of the L-shaped plate (16), a slider (22) is slidably connected to the guide rails (21), the top of the slider (22) is fixedly connected to the fixed block (19), and a resisting block (23) is fixedly arranged at the bottom of the slider (22).

7. The preparation device of the cathode sheet of the high-performance tantalum electrolytic capacitor according to claim 6, characterized in that, A plurality of fixing rods (24) are symmetrically and fixedly arranged at the bottom of the L-shaped plate (16), a fixing plate (25) is fixedly arranged at the bottom of the plurality of fixing rods (24), a moving block (26) in the middle of the fixing plate (25) is movably connected to the fixing plate (25), and a through rod (27) is slidably arranged through the middle of the moving block (26).

8. The preparation device of the cathode sheet of the high-performance tantalum electrolytic capacitor according to claim 7, characterized in that, A spring (28) is sleeved on the outer surface of the through rod (27). A limit block (29) is fixedly arranged at the top of the through rod (27). Connecting plates (30) are symmetrically and fixedly arranged on the through rod (27). A roller (31) is rotatably arranged between the connecting plates (30). The bottom of the through rod (27) is fixedly connected to a synchronization block (32).

9. The preparation device of the cathode sheet of the high-performance tantalum electrolytic capacitor according to claim 1, characterized in that, The adjusting mechanism (34) further includes a groove (35) penetrating through the fixing plate (25). Fixed bars (36) are symmetrically and fixedly arranged in the groove (35). The fixed bars (36) are slidably connected to the moving block (26). A bidirectional lead screw (37) on the moving block (26) penetrates through the fixing plate (25). The bidirectional lead screw (37) is threadedly connected to the fixing plate (25) and the moving block (26). A knob (38) is fixedly arranged at the end of the bidirectional lead screw (37).

10. A method for preparing a cathode sheet of a high-performance tantalum electrolytic capacitor, which is used in the preparation device of the cathode sheet of the high-performance tantalum electrolytic capacitor described in any one of the above claims 1-9, characterized in that, including the following steps: S1: Raw material preparation and forming: Tantalum powder and tantalum are mixed and a binder is added, and then it is molded into a cylindrical or rectangular block-shaped anode body. Then, the sintered tantalum capacitor workpiece (11) is immersed in dilute nitric acid solution, and electricity is passed through to decompose nitric acid to generate oxygen, and a dense Ta2O5 (tantalum pentoxide) oxide film is formed on the surface of the anode body as a dielectric layer; S2: Impregnation and drying: The energized tantalum capacitor workpiece (11) is conveyed one by one to the impregnation and centrifugal drying drum (2) through the separation mechanism (15) on the conveyor belt 1 (9), and is impregnated in manganese nitrate solution to allow the solution to penetrate into the holes of the tantalum capacitor workpiece (11). The impregnation and centrifugal drying machine drum rotates at a high speed to generate centrifugal force to throw off the excess solution and promote the uniform distribution of manganese nitrate in the holes. The impregnation and centrifugal drying process is repeated multiple times to ensure that manganese dioxide fully fills the holes to form a cathode layer; S3: Heat treatment and decomposition: The impregnated tantalum capacitor workpiece (11) on the conveyor belt 2 (10) is subjected to high-temperature heat treatment through the impregnation and centrifugal drying drum (2) to decompose manganese nitrate to generate manganese dioxide, and the formation of the cathode plate of the tantalum capacitor workpiece (11) is completed; S4: The tantalum capacitor workpiece (11) in the impregnation and centrifugal drying drum (2) is clamped onto the conveyor belt 2 (10) to complete the preparation of the cathode plate of the tantalum electrolytic capacitor.

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