A sintered foil slurry coating drying all-in-one machine for aluminum electrolytic capacitor
By designing an integrated coating and drying machine for sintered foil slurry of aluminum electrolytic capacitors that combines stirring, coating, and drying functions, the problem of long production cycles caused by the separation of coating and drying in traditional processes has been solved, realizing assembly line production and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENAN WEINA ELECTRONIC MATERIAL CO LTD
- Filing Date
- 2026-06-01
- Publication Date
- 2026-07-17
AI Technical Summary
The traditional aluminum electrolytic capacitor production process separates the coating and drying processes, resulting in a long production cycle and making it impossible to achieve continuous and efficient production.
Design an integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors, which integrates mixing, coating and drying functions into one unit. The mixing, coating and drying of raw materials are achieved through components such as stirring blades, heating rings and coating tubes, forming an assembly line production.
This has enabled streamlined coating and drying processes in the production of aluminum electrolytic capacitors, shortening the production cycle and improving production efficiency.
Smart Images
Figure CN122417686A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of coating machine technology, specifically to an integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors. Background Technology
[0002] Aluminum electrolytic capacitors are indispensable passive components in modern electronic circuits, their core consisting of an anode foil and a cathode foil. The anode foil is typically made of high-purity aluminum foil that has undergone electrochemical etching to form a high-rate microporous structure, and then a layer of metal oxide or conductive polymer is formed on its surface through a sintering process. This step greatly improves the capacitor's frequency characteristics, ripple current tolerance, and reliability. In manufacturing these solid-state or high-performance aluminum electrolytic capacitors, "sintered foil slurry coating" is a crucial step. The process involves precisely and uniformly coating a slurry containing specific functional powders, binders, solvents, and other additives onto the surface of the sintered aluminum foil, which has a complex three-dimensional porous structure. Traditional manufacturing processes typically treat "coating" and "drying" as two separate, discrete steps, applying the slurry to the aluminum foil substrate on a separate coating machine using methods such as comma-shaped doctor blades, micro-gravure printing, slot extrusion, or dipping. After coating, operators or a transfer system are required to rewind or transfer the wet foil from the coating machine and then transfer it to a separate drying device (such as a tunnel oven or box drying chamber) for curing. The drying process requires precise control of the temperature profile to ensure solvent evaporation and the thermal decomposition or polymerization reaction of the precursor.
[0003] The intermediate steps between coating and drying, such as foil winding, transfer, and rewinding, consume a lot of time, resulting in long production cycles and making it impossible to achieve continuous and efficient production. Summary of the Invention
[0004] To solve the above technical problems, the present invention is achieved through the following technical solution: an integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors, comprising a base, a fixed frame fixedly connected to the top of the base, a feed roller rotatably connected to the side of the fixed frame, a take-up roller rotatably connected to the side of the fixed frame located on the side of the feed roller, a stirring tank fixedly connected to the top of the fixed frame, a coating tube communicating with the side of the stirring tank, a heating ring fixedly connected to the side of the fixed frame located below the coating tube, and the bottom of the coating tube being positioned above the feed roller; The mixing tank includes an outer mixing tube. A mixing blade is rotatably connected to the inner wall of the outer mixing tube. A heating component is sleeved and fixedly connected to the side of the outer mixing tube. A fixing ring is fixedly connected to the side of the heating component. The side of the outer mixing tube is rotatably connected to the side of the fixing ring. The bottom of the heating component is rotatably connected to the top of the fixing frame. When the mixing blade rotates, the power supply to the heating component is turned on, and the heating component heats the interior of the outer mixing tube. Driven by the mixing blade, the outer mixing tube rotates, mixing the raw materials. The opposite direction of the mixing blade and the outer mixing tube facilitates mixing in two directions. The heating component heats the raw materials, facilitating drying and evaporation. The raw materials are then discharged through a coating tube, which is heated by the heating ring, further facilitating drying. Simultaneously, the film is introduced by the feed roller and discharged by the collect roller, facilitating automated coating and drying.
[0005] Preferably, the outer stirring tube includes a stirring tube, a pneumatic blade is fixedly connected to the side of the stirring tube, a forward blade is fixedly connected to the inner wall side of the stirring tube, a scraper plate is fixedly connected through and to the side of the forward blade, a feed connector is connected to the side of the stirring tube, an internal gear ring is fixedly connected to the side of the stirring tube located at the feed connector, the inner wall of the internal gear ring meshes with the side of the stirring blade through gears, and the side of the pneumatic blade is fixedly connected to the side of the heating component.
[0006] Preferably, the stirring blade includes a first motor, the drive shaft of the first motor is fixedly connected to a drive gear, the side of the drive gear is fixedly connected to a rotating base, the side of the rotating base is fixedly connected to a reverse blade, the end of the reverse blade away from the first motor is fixedly connected to a guide tip, the side of the drive gear meshes with the inner wall of the internal gear ring through a gear, the side of the reverse blade contacts the side of the forward blade, and the side of the first motor is fixedly connected to the top of the fixed frame through a bracket.
[0007] Preferably, the heating component includes a fixing strip, a fixing ring fixedly connected to the side of the fixing strip, and a first heat pipe fixedly connected to the top of the fixing strip. The first heat pipe is sleeved on the side of the stirring tube and fixedly connected to the side of the pneumatic blade. The bottom of the fixing ring is rotatably connected to the top of the fixing frame. When the first motor is started, the drive shaft of the first motor drives the drive gear to rotate. The rotation of the drive gear drives the rotating base to rotate. The rotation of the rotating base drives the reverse blade to rotate. The rotation of the reverse blade drives the guide tip to rotate. Under the reversing action of the gear, the internal gear ring rotates. The rotation of the internal gear ring drives the stirring tube to rotate. The rotating agitator tube drives the forward blades to rotate, which in turn agitates the raw materials and guides and scrapes them through a scraper, facilitating agitation and removal. The first heat pipe heats the side of the agitator tube, thereby heating the raw materials inside the tube, which facilitates drying after coating. Simultaneously, the rotation of the agitator tube drives the pneumatic blades to move, drawing air through the gaps in the first heat pipe and over the top of the film, facilitating drying after coating. Furthermore, the heat radiated by the first heat pipe directly acts on the surface of the film, accelerating the drying process.
[0008] Preferably, the coating tube includes a tapered tube, a rotating collar is connected to the side of the tapered tube, an arc-shaped tube is connected to the end of the tapered tube away from the rotating collar, an extrusion port is connected to the bottom of the arc-shaped tube, the rotating collar is sleeved on the side of the stirring tube and rotatably connected to the stirring tube, the arc-shaped tube is positioned above the heating ring, the extrusion port is positioned above the feed roller, and the side of the arc-shaped tube is fixedly connected to the side of the fixing frame.
[0009] Preferably, the extrusion port includes an extrusion tube, the bottom of which is connected to a dispersing nozzle, and the top of which is connected to the bottom of an arc-shaped tube. The dispersing nozzle is positioned above the feed roller. The raw material enters the conical tube through a rotating collar for guidance and is extruded along the arc-shaped tube. The raw material is extruded through the extrusion tube and coated by repeated covering under the action of the dispersing nozzle. At the same time, it is dried under the action of a heating ring, thereby facilitating coating on the surface of the film.
[0010] Preferably, the heating ring includes a fixed post, and a second heat pipe is sleeved and fixedly connected to the side of the fixed post. The second heat pipe is located below the arc-shaped tube. The side of the fixed post is fixedly connected to the side of the fixed frame. The second heat pipe is located above the feed roller. When the second heat pipe is turned on, it heats the side of the arc-shaped tube, thereby promoting the temperature rise of the raw material inside the arc-shaped tube and accelerating the drying speed of the raw material. At the same time, the heat from the second heat pipe directly radiates to the top of the feed roller, thereby directly heating and drying after coating.
[0011] This invention provides an integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors. It has the following beneficial effects: 1. This integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors is equipped with stirring blades. When the stirring blades rotate and the power supply to the heating component is turned on, the heating component heats the inside of the outer stirring tube. Driven by the stirring blades, the outer stirring tube rotates, mixing the raw materials. The opposite direction of the stirring blades and the outer stirring tube facilitates two-way mixing of the raw materials. The heating component heats the raw materials, facilitating drying and evaporation. The raw materials are then discharged through the coating tube, which is heated by a heating ring, further facilitating drying. Simultaneously, the film is introduced by the feed roller and discharged by the take-up roller, enabling automated coating and drying.
[0012] 2. This aluminum electrolytic capacitor sintered foil slurry coating and drying integrated machine is equipped with a first motor. The drive shaft of the first motor drives the drive gear to rotate, which in turn drives the rotating base to rotate. The rotating base then drives the reverse blades to rotate, which in turn drives the guide tip to rotate. Under the reversing action of the gear, the internal gear ring rotates, which in turn drives the stirring tube to rotate. The stirring tube then drives the forward blades to rotate, which agitate the raw material and guide and scrape it through a scraper, thus facilitating the agitation and discharge of the raw material. A first heat pipe heats the side of the stirring tube, thereby heating the raw material inside the stirring tube, which facilitates drying after coating. Simultaneously, during the rotation of the stirring tube, the pneumatic blades move, causing air to pass through the gaps of the first heat pipe and over the top of the film, facilitating drying after coating. Furthermore, the heat radiated by the first heat pipe directly acts on the surface of the film, thereby accelerating the drying process.
[0013] 3. The aluminum electrolytic capacitor sintered foil slurry coating and drying integrated machine is equipped with a conical tube. The raw material enters the interior of the conical tube through the rotating collar for guidance and is extruded along the arc-shaped tube. The raw material is extruded through the extrusion tube and coated by repeated covering under the action of the dispersing nozzle. At the same time, it is dried under the action of the heating ring, so as to facilitate coating on the surface of the film.
[0014] 4. The aluminum electrolytic capacitor sintered foil slurry coating and drying integrated machine is equipped with a second heat pipe. The second heat pipe heats the side of the arc-shaped tube, thereby promoting the temperature rise of the raw material inside the arc-shaped tube and accelerating the drying speed of the raw material. At the same time, the heat from the second heat pipe directly radiates to the top of the feed roller, so that the material is directly heated and dried after coating. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors according to the present invention. Figure 2 This is a schematic diagram of the mixing tank structure of the present invention; Figure 3 This is a schematic diagram of the outer stirring tube structure of the present invention; Figure 4 This is a schematic diagram of the stirring blade structure of the present invention; Figure 5 This is a schematic diagram of the heating component structure of the present invention; Figure 6 This is a schematic diagram of the coated tube structure of the present invention; Figure 7 This is a schematic diagram of the extrusion port structure of the present invention; Figure 8 This is a schematic diagram of the heating ring structure of the present invention.
[0016] In the diagram: 1. Equipment base; 2. Fixing frame; 3. Feed roller; 4. Take-up roller; 5. Mixing tank; 6. Coating pipe; 7. Heating ring; 501. Outer mixing pipe; 502. Mixing blades; 503. Heating assembly; 504. Fixing ring; 5011. Mixing pipe; 5012. Pneumatic blades; 5013. Forward blades; 5014. Scraper; 5015. Feed connector; 5016. Internal gear ring; 5021 5021 First motor; 5022 Drive gear; 5023 Rotating base; 5024 Reverse blade; 5025 Guide tip; 5031 Fixing strip; 5032 Fixing ring; 5033 First heat pipe; 601 Conical tube; 602 Rotating collar; 603 Arc tube; 604 Extrusion port; 6041 Extrusion tube; 6042 Dispersion nozzle; 701 Fixing column; 702 Second heat pipe. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] For the first embodiment, please refer to... Figures 1-2The present invention provides a technical solution: an integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors, including a base 1, a fixed frame 2 fixedly connected to the top of the base 1, a feeding roller 3 rotatably connected to the side of the fixed frame 2, a receiving roller 4 rotatably connected to the side of the fixed frame 2 located on one side of the feeding roller 3, a mixing tank 5 fixedly connected to the top of the fixed frame 2, a coating pipe 6 connected to the side of the mixing tank 5, a heating ring 7 fixedly connected to the side of the fixed frame 2 located below the coating pipe 6, and the bottom of the coating pipe 6 located above the feeding roller 3; The mixing tank 5 includes an outer mixing tube 501, a mixing blade 502 rotatably connected to the inner wall of the outer mixing tube 501, a heating component 503 sleeved and fixedly connected to the side of the outer mixing tube 501, a fixing ring 504 fixedly connected to the side of the heating component 503, the side of the outer mixing tube 501 and the side of the fixing ring 504 rotatably connected, and the bottom of the heating component 503 rotatably connected to the top of the fixing frame 2.
[0019] The stirring blade 502 is activated and rotates. The power supply to the heating component 503 is turned on, and the heating component 503 heats the inside of the stirring outer tube 501. Driven by the stirring blade 502, the stirring outer tube 501 rotates, mixing the raw materials. The opposite direction of the stirring blade 502 and the stirring outer tube 501 facilitates mixing of the raw materials in two directions. The heating effect of the heating component 503 heats the raw materials, facilitating drying and evaporation. The raw materials are then discharged through the coating tube 6, which is heated by the heating ring 7, facilitating drying. Simultaneously, the film is introduced by the feed roller 3 and discharged by the take-up roller 4, facilitating automated coating and drying.
[0020] For the second embodiment, please refer to... Figures 1-5 Based on the first embodiment, the present invention provides a technical solution: the stirring outer tube 501 includes a stirring tube 5011, a pneumatic blade 5012 is fixedly connected to the side of the stirring tube 5011, a forward blade 5013 is fixedly connected to the inner wall side of the stirring tube 5011, a scraper 5014 is fixedly connected through and to the side of the forward blade 5013, a feed connector 5015 is connected to the side of the stirring tube 5011, an internal gear ring 5016 is fixedly connected to the side of the stirring tube 5011 located at the feed connector 5015, the inner wall of the internal gear ring 5016 meshes with the side of the stirring blade 502 through gears, and the side of the pneumatic blade 5012 is fixedly connected to the side of the heating component 503.
[0021] The stirring blade 502 includes a first motor 5021. The drive shaft of the first motor 5021 is fixedly connected to a drive gear 5022. A rotating base 5023 is fixedly connected to the side of the drive gear 5022. A reverse blade 5024 is fixedly connected to the side of the rotating base 5023. A guide tip 5025 is fixedly connected to the end of the reverse blade 5024 away from the first motor 5021. The side of the drive gear 5022 meshes with the inner wall of the internal gear ring 5016 through a gear. The side of the reverse blade 5024 contacts the side of the forward blade 5013. The side of the first motor 5021 is fixedly connected to the top of the fixed frame 2 through a bracket.
[0022] The heating component 503 includes a fixing strip 5031, a fixing ring 5032 fixedly connected to the side of the fixing strip 5031, a first heat pipe 5033 fixedly connected to the top of the fixing strip 5031, the first heat pipe 5033 is sleeved on the side of the stirring tube 5011 and fixedly connected to the side of the pneumatic blade 5012, and the bottom of the fixing ring 5032 is rotatably connected to the top of the fixing frame 2.
[0023] The first motor 5021 is started. The drive shaft of the first motor 5021 drives the drive gear 5022 to rotate. The rotation of the drive gear 5022 drives the rotating base 5023 to rotate. The rotation of the rotating base 5023 drives the reverse blade 5024 to rotate. The rotation of the reverse blade 5024 drives the guide tip 5025 to rotate. Under the action of the gear reversal, the internal gear ring 5016 is driven to rotate. The rotation of the internal gear ring 5016 drives the stirring tube 5011 to rotate. The rotation of the stirring tube 5011 drives the forward blade 5013 to rotate. The rotation of the forward blade 5013 agitates the raw materials and moves them through the scraper. 5014 guides and scrapes the raw material, facilitating its agitation and extraction. The first heat pipe 5033 heats the side of the stirring tube 5011, thereby heating the raw material inside the stirring tube 5011, which facilitates drying after coating. Simultaneously, as the stirring tube 5011 rotates, it drives the pneumatic blades 5012 to move, thereby drawing air through the gaps in the first heat pipe 5033 and over the top of the film, facilitating drying after coating. Furthermore, the heat radiated by the first heat pipe 5033 directly acts on the surface of the film, thus accelerating the drying process.
[0024] Third embodiment, please refer to Figures 1-7Based on the second embodiment, the present invention provides a technical solution: the coating tube 6 includes a tapered tube 601, a rotating collar 602 is connected to the side of the tapered tube 601, an arc-shaped tube 603 is connected to the end of the tapered tube 601 away from the rotating collar 602, an extrusion port 604 is connected to the bottom of the arc-shaped tube 603, the rotating collar 602 is sleeved on the side of the stirring tube 5011 and rotatably connected to the stirring tube 5011, the arc-shaped tube 603 is located above the heating ring 7, the extrusion port 604 is located above the feed roller 3, and the side of the arc-shaped tube 603 is fixedly connected to the side of the fixing frame 2.
[0025] The extrusion port 604 includes an extrusion tube 6041, the bottom of which is connected to a dispersing nozzle 6042, the top of which is connected to the bottom of an arc-shaped tube 603, and the dispersing nozzle 6042 is positioned above the feed roller 3.
[0026] The raw material enters the interior of the conical tube 601 through the rotating collar 602 for guidance and is extruded along the arc tube 603. The raw material is extruded through the extrusion tube 6041 and coated by repeated covering under the action of the dispersing nozzle 6042. At the same time, it is dried under the action of the heating ring 7, so as to facilitate coating on the surface of the film.
[0027] For the fourth embodiment, please refer to [link / reference]. Figures 1-8 Based on the third embodiment, the present invention provides a technical solution: the heating ring 7 includes a fixing post 701, a second heat pipe 702 is sleeved and fixedly connected to the side of the fixing post 701, the second heat pipe 702 is located below the arc-shaped tube 603, the side of the fixing post 701 is fixedly connected to the side of the fixing frame 2, and the second heat pipe 702 is located above the feed roller 3.
[0028] When the second heat pipe 702 is turned on, the heat generated by the second heat pipe 702 heats the side of the arc tube 603, thereby promoting the temperature rise of the raw material inside the arc tube 603 and accelerating the drying speed of the raw material. At the same time, the heat from the second heat pipe 702 directly radiates to the top of the feed roller 3, thereby directly heating and drying after coating.
[0029] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A sintered foil slurry coating and drying integrated machine for aluminum electrolytic capacitors, characterized in that: The device includes a base (1), a fixed frame (2) is fixedly connected to the top of the base (1), a feed roller (3) is rotatably connected to the side of the fixed frame (2), a take-up roller (4) is rotatably connected to the side of the fixed frame (2) located on the side of the feed roller (3), a mixing tank (5) is fixedly connected to the top of the fixed frame (2), a coating tube (6) is connected to the side of the mixing tank (5), a heating ring (7) is fixedly connected to the side of the fixed frame (2) located below the coating tube (6), and the bottom of the coating tube (6) is located above the feed roller (3). The mixing tank (5) includes an outer mixing tube (501), a mixing blade (502) is rotatably connected to the inner wall side of the outer mixing tube (501), a heating component (503) is sleeved and fixedly connected to the side of the outer mixing tube (501), a fixing ring (504) is fixedly connected to the side of the heating component (503), the side of the outer mixing tube (501) is rotatably connected to the side of the fixing ring (504), and the bottom of the heating component (503) is rotatably connected to the top of the fixing frame (2).
2. The integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors according to claim 1, characterized in that: The stirring outer tube (501) includes a stirring tube (5011), a pneumatic blade (5012) is fixedly connected to the side of the stirring tube (5011), a forward blade (5013) is fixedly connected to the inner wall side of the stirring tube (5011), a scraper (5014) is fixedly connected through the side of the forward blade (5013), a feed connector (5015) is connected to the side of the stirring tube (5011), an internal gear ring (5016) is fixedly connected to the side of the stirring tube (5011) located at the feed connector (5015), the inner wall of the internal gear ring (5016) meshes with the side of the stirring blade (502) through gears, and the side of the pneumatic blade (5012) is fixedly connected to the side of the heating component (503).
3. The integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors according to claim 2, characterized in that: The stirring blade (502) includes a first motor (5021), the drive shaft of the first motor (5021) is fixedly connected to a drive gear (5022), the side of the drive gear (5022) is fixedly connected to a rotating base (5023), the side of the rotating base (5023) is fixedly connected to a reverse blade (5024), the end of the reverse blade (5024) away from the first motor (5021) is fixedly connected to a guide tip (5025), the side of the drive gear (5022) meshes with the inner wall of the internal gear ring (5016) through the gear, the side of the reverse blade (5024) contacts the side of the forward blade (5013), and the side of the first motor (5021) is fixedly connected to the top of the fixed frame (2) through the bracket.
4. The integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors according to claim 2, characterized in that: The heating component (503) includes a fixing strip (5031), a fixing ring (5032) is fixedly connected to the side of the fixing strip (5031), a first heat pipe (5033) is fixedly connected to the top of the fixing strip (5031), the first heat pipe (5033) is sleeved on the side of the stirring tube (5011) and fixedly connected to the side of the pneumatic blade (5012), and the bottom of the fixing ring (5032) is rotatably connected to the top of the fixing frame (2).
5. The integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors according to claim 1, characterized in that: The coating tube (6) includes a tapered tube (601), a rotating collar (602) is connected to the side of the tapered tube (601), an arc-shaped tube (603) is connected to the end of the tapered tube (601) away from the rotating collar (602), an extrusion port (604) is connected to the bottom of the arc-shaped tube (603), the rotating collar (602) is sleeved on the side of the stirring tube (5011) and rotatably connected to the stirring tube (5011), the arc-shaped tube (603) is located above the heating ring (7), the extrusion port (604) is located above the feed roller (3), and the side of the arc-shaped tube (603) is fixedly connected to the side of the fixing frame (2).
6. The integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors according to claim 5, characterized in that: The extrusion port (604) includes an extrusion tube (6041), the bottom of which is connected to a dispersing nozzle (6042).
7. The integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors according to claim 6, characterized in that: The top of the extrusion tube (6041) is connected to the bottom of the arc tube (603), and the dispersing nozzle (6042) is positioned above the feed roller (3).
8. The integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors according to claim 5, characterized in that: The heating ring (7) includes a fixing post (701), and a second heat pipe (702) is sleeved and fixedly connected to the side of the fixing post (701).
9. The integrated machine for coating and drying sintered foil slurry for aluminum electrolytic capacitors according to claim 8, characterized in that: The second heat pipe (702) is located below the arc-shaped pipe (603), the side of the fixed column (701) is fixedly connected to the side of the fixed frame (2), and the second heat pipe (702) is located above the feed roller (3).