No-dead-corner circular electrode curved surface slurry coating device

Abstract

The invention discloses a no-dead-corner circular electrode curved surface slurry coating device, and relates to the technical field of electrode production. Comprising a rack, a silver paste box, a coating mechanism, a paste scraping mechanism, a sliding mechanism, a self-rotating clamping device, a drying assembly and a transferring assembly, through linkage of a driving motor, a fluted disc and a meshing gear, a vibration shaft obtains stable up-down reciprocating vibration, meanwhile, a circular electrode is driven to rotate, and synchronization and continuity of the coating process and the bubble removing process are achieved. The multi-stage vibration disc enables bubbles in the silver paste to quickly float upwards or be gathered and broken; and by combining an overflow groove, a thorn strip and an arc-shaped guide plate structure on the outer edge of the tiling disc, multi-stage bubble breaking, flow division and directional liquid guide of residual bubbles are realized. The slurry is sequentially defoamed on the multi-stage disc surface and then guided into the lower layer along the vibration shaft, so that the bubble content of the silver slurry entering the coating head is reduced, and the fluidity is more stable. And the drying bin stretches out and draws back through an air cylinder, the coated electrode plate is subjected to covering drying treatment, and after treatment is completed, the drying bin is lifted to leave the electrode plate.

Description

Technical Field

[0001] This invention relates to the field of electrode manufacturing technology, specifically to a device for coating slurry onto the curved surface of a circular electrode without dead angles. Background Technology

[0002] In the side coating process of circular electrodes, the annular protrusions on the outer periphery of the electrode create a complex curved surface structure with localized outward concavity on its sidewalls. Conventional planar or linear coating equipment struggles to achieve conformal adhesion and stable coating on this curved surface. Therefore, current production often relies on manual application under a microscope using a stylus pen, resulting in extremely low efficiency, poor repeatability, and the inability to consistently control the coating thickness, easily leading to uneven coating in the curved areas.

[0003] Meanwhile, the existing paste supply process lacks an effective degassing step, making it difficult to identify and remove tiny air bubbles inside the silver paste before coating. Residual air bubbles can cause defects such as pitting and pinholes during coating and subsequent drying, severely affecting film quality and product consistency. In addition, manual alignment and coating operations are inefficient, inconsistent, and wasteful of materials, failing to meet the demands of mass production with high consistency. Summary of the Invention

[0004] The purpose of this invention is to provide a slurry coating device for a circular electrode surface without dead angles, so as to solve the problems mentioned in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a slurry coating device for a circular electrode surface without dead angles, comprising a frame, a silver paste box mounted on the frame, a drying component mounted on the frame, a transfer component slidably mounted on the frame, a sliding mechanism mounted on the frame, a coating mechanism mounted on the frame, and a scraping mechanism mounted on the frame. The coating mechanism and the scraping mechanism are respectively located on both sides of the silver paste box. A spin clamping device is mounted on the sliding mechanism, and the spin clamping device engages with the coating mechanism for transmission. The silver paste box is connected to the coating mechanism.

[0006] The sliding mechanism drives the spin clamping device to move horizontally and vertically, the transfer assembly moves the coated electrode to the drying assembly, and the drying assembly dries the coated electrode. A control system is installed within the frame to control the entire coating device.

[0007] After the silver paste is applied, the control system uses the first and second robotic arms to remove the coating and scraping mechanisms. Then, the sliding mechanism drives the self-rotating clamping device to the transfer assembly. After the base block is removed by tools, the control system controls the output shaft of the electric telescopic rod to retract and pull it away from the hole on the circular electrode. The transfer assembly moves the coated electrode to the drying assembly, which then dries the coated electrode.

[0008] Furthermore, the coating mechanism includes a first robotic arm mounted on a frame, a multi-stage defoaming mechanism mounted on the first robotic arm, a uniform film coating head mounted at the bottom of the multi-stage defoaming mechanism, the multi-stage defoaming mechanism engaging with a spin clamping device for transmission, and the multi-stage defoaming mechanism being connected to the silver paste box via a pipe.

[0009] Once the electrode is in position, the control system simultaneously activates the electric telescopic rod, the first robotic arm, and the second robotic arm. The output shaft of the electric telescopic rod drives the circular electrode to make minor adjustments to its position via the base block; the first robotic arm moves the coating mechanism; and the second robotic arm moves the scraper blade closer to the workpiece. Finally, the concave plate on the uniform coating head precisely engages with the convex ring on the side of the circular electrode, and the gears and gear disc mesh, causing the scraper blade to also engage with the convex ring on the side of the circular electrode. Based on the set coating thickness, the control system independently adjusts the gaps between the concave plate, the scraper blade, and the motor side via the two robotic arms, ensuring that the distance between them and the convex ring reaches the preset value, guaranteeing the accuracy of the coating thickness.

[0010] Furthermore, the multi-stage defoaming device includes a defoaming shell, which is mounted on the first robotic arm. A vibrating shaft is slidably installed inside the defoaming shell, and several flattening discs are mounted on the vibrating shaft. The flattening discs are flat circular discs with flanges at their edges. Several overflow grooves are provided on the flanges of the flattening discs, and liquid guides are installed at the overflow grooves. The bottom ends of the liquid guides converge toward the vibrating shaft. The top of the defoaming shell is provided with a paste inlet, which is connected to the silver paste box through a pipe.

[0011] A liquid extraction device is installed on the pipe connecting the inlet to the silver paste box. The liquid extraction device is used to extract the silver paste in the silver paste box and transport it to the inlet on the defoaming shell.

[0012] The pumping device continuously draws silver paste from the silver paste box through a pipe to the inlet at the top of the defoaming shell. The silver paste falls from top to bottom onto the top-level spreading plate. As the vibrating plate vibrates, the silver paste forms a thin layer on the plate surface. The liquid disturbance causes some bubbles in the silver paste to rise and burst rapidly, while other tiny bubbles merge into larger bubbles under the vibration shearing and rise. As the silver paste accumulates, excess silver paste begins to flow out from the overflow groove on the flange of the spreading plate. The remaining larger bubbles are punctured by the tips of the barbs when they come into contact with them. The silver paste is then guided along the grooves on the barbs and the curved guide plate to the vibrating shaft, and falls along the vibrating shaft to the next level vibrating plate. After multi-stage defoaming treatment, the silver paste is introduced into the liquid chamber along the bottom of the vibrating shaft. This ensures that the internal bubble content of the silver paste is significantly reduced after multi-stage defoaming, effectively improving the quality of subsequent coating.

[0013] The silver paste, after undergoing multi-stage defoaming, converges at the bottom of the vibrating shaft and flows into the liquid chamber of the uniform film coating head. A uniform distribution plate within the liquid chamber divides the incoming silver paste into several equal streams, which, after passing through a liquid tank, are further distributed to the concave plate area. The silver paste is evenly discharged through multiple outlet holes on the concave plate, forming a multi-point synchronous discharge distribution pattern, ensuring that all points on the convex side of the circular electrode receive the same flow rate of paste. As the electrode spins, the paste outlet surface of the concave plate forms a continuous coating band on the side of the workpiece, with the silver paste uniformly adhering to the curved surface of the electrode.

[0014] When the electrode rotates to the position of the scraper, the concave scraping surface of the scraper comes into contact with the convex ring of the electrode, performing a secondary smoothing of the already coated layer, leveling out local thickness differences, making the coating thickness more uniform, and resulting in a higher surface finish. During this process, the silver paste overflowing from the uniform coating head and the silver paste scraped off by the scraper fall into the silver paste box below under the direction of gravity and are collected and reused, realizing closed-loop utilization of raw materials, reducing silver paste waste and maintaining a clean working environment.

[0015] Furthermore, the multi-stage defoaming device also includes several positioning columns, a vibrating plate, and a vibration starter. The vibrating plate is installed at the top of the vibrating shaft, the positioning columns are installed inside the defoaming shell, the vibrating plate and the positioning columns are slidably connected, a spring is installed between the vibrating plate and the defoaming shell, and the vibration starter is rotatably installed inside the defoaming shell. The vibration starter engages with the self-rotating clamping device for transmission.

[0016] Furthermore, the vibration element includes a rotating rod, which is rotatably installed inside the bubble removal shell. A gear is installed at the top of the rotating rod, and the gear meshes with the self-spinning clamping device for transmission. Several upper vibration heads are installed at the bottom of the rotating rod, and several lower vibration heads are provided at the top of the vibrating plate.

[0017] After the position adjustment is completed, the control system starts the liquid extraction device and drive motor.

[0018] The motor output shaft drives the electric telescopic rod to rotate via the turntable, causing the circular electrode to rotate. Simultaneously, the turntable drives the geared disc to rotate, which in turn drives the rotating rod to rotate. The upper vibrating head at the lower end of the rotating rod periodically contacts the lower vibrating head at the top of the vibrating disk. When the upper vibrating head rotates above the lower vibrating head, it applies pressure, causing the lower vibrating head to push the vibrating disk downwards and compress the spring. When the upper vibrating head rotates away from the contact position, the spring rebounds, causing the vibrating disk and the vibrating shaft to return to their original position. This cycle repeats, causing the vibrating shaft to reciprocate up and down, and driving several flat discs to vibrate synchronously.

[0019] Furthermore, the liquid guide includes barbs with an arc-shaped guide plate mounted on them. The arc-shaped guide plate has a groove. The barbs are connected to the flange of the flat plate. The top of the barbs has a pointed tip located at the overflow groove.

[0020] Furthermore, the uniform film coating head is provided with a liquid cavity, the liquid cavity is provided with a uniform liquid plate, the uniform liquid plate is provided with several liquid grooves, the uniform film coating head is provided with a concave plate, and the concave plate is provided with several liquid outlet holes.

[0021] Furthermore, the self-spinning clamping device includes a motor, which is mounted on a sliding mechanism. A turntable is mounted on the motor output shaft, an electric telescopic rod is mounted at the bottom of the turntable, a gear plate is mounted on the turntable, and the gear plate meshes with a gear for transmission. A base block is mounted at the bottom of the electric telescopic rod output shaft.

[0022] Before coating, the opening of the circular electrode is first inserted into the output shaft of the electric telescopic rod, and the base block is installed at the bottom end of the output shaft of the electric telescopic rod. The base block firmly supports the circular electrode, achieving reliable positioning and fixation of the circular electrode, ensuring its coaxiality is stable and its posture does not shift during the subsequent rotational coating process.

[0023] Subsequently, the control system activates the sliding mechanism, which drives the spin clamping device to move horizontally and vertically. Simultaneously, the spin clamping device smoothly moves the circular electrode to the coating area above the silver paste box. This arrangement allows for precise switching from loading to coating position without disassembling the workpiece, improving operational efficiency and automation.

[0024] Furthermore, the scraping mechanism includes a second robotic arm, which is mounted on the frame and has a scraper blade installed on it. The scraper blade has a concave structure.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. Through the coordinated control of the electric telescopic rod, the first robotic arm and the second robotic arm, the vertical position of the circular electrode and the contact position between the scraper and the coating mechanism can be automatically adjusted synchronously, realizing the precise double-sided fitting and positioning of the coating head and the scraper on the circular electrode convex ring.

[0027] 2. The uniform liquid plate and outlet hole structure inside the uniform film coating head divides the degassed silver paste into several equal streams, achieving multi-point uniform and synchronous discharge. This ensures that different orientations of the circular electrode surface receive a consistent coating amount, thus forming a continuous and stable coating band and improving the uniformity and density of the coating. When the circular electrode rotates to the position of the scraper, the scraper performs a secondary smoothing of the formed coating, effectively reducing local thickness differences and further improving the smoothness and consistency of the coating.

[0028] 3. Through the linkage of the drive motor, gear disc, and meshing gears, the vibrating shaft achieves stable up-and-down reciprocating vibration, simultaneously driving the rotation of the circular electrode, thus realizing the synchronization and continuity of the coating and defoaming processes. The multi-stage vibrating disc allows bubbles inside the silver paste to quickly rise or coalesce and burst; combined with the overflow groove, barbs, and arc-shaped guide plate structure on the outer edge of the flattening disc, multi-stage bubble breaking, diversion, and directional liquid guidance are achieved for residual bubbles. After being defoamed sequentially on the multi-stage disc surface, the slurry is introduced into the lower layer along the vibrating shaft, and finally enters the liquid cavity of the uniform coating head, significantly reducing the bubble content of the silver paste entering the coating head and making its flowability more stable.

[0029] 4. The circular electrode is lifted and fixed by an electric telescopic rod and a base support block, achieving positioning support and posture maintenance of the workpiece. This ensures that the electrode does not become eccentric or wobble during the rotary coating process, thereby improving coating accuracy and film uniformity. The sliding mechanism drives the self-rotating clamping device to achieve automatic horizontal and vertical movement, effectively improving the automation level and operating efficiency of the entire machine, reducing manual alignment errors, and ensuring smooth and reliable positioning of the workpiece during transfer.

[0030] 5. During coating and scraping, excess silver paste falls back into the silver paste box under gravity and is reused, forming a closed-loop supply system. This reduces silver paste waste, lowers the frequency of equipment cleaning, and ensures a clean and efficient overall working environment. Attached Figure Description

[0031] Figure 1 This is an overall perspective view of the coating device of the present invention;

[0032] Figure 2 This is a perspective view of the coating apparatus of the present invention;

[0033] Figure 3 This is a perspective view of the spin clamping device of the present invention;

[0034] Figure 4 For the present invention Figure 2 A magnified view of a portion of region A in the middle;

[0035] Figure 5 This is a perspective view of the multi-stage defoaming mechanism of the present invention;

[0036] Figure 6 For the present invention Figure 5 A magnified view of a portion of region B in the middle;

[0037] Figure 7 This is a perspective view of the liquid guide device of the present invention;

[0038] Figure 8 This is a perspective view of the vibration initiator of the present invention;

[0039] Figure 9 This is a perspective view of the vibrating head of the present invention;

[0040] Figure 10 This is a cross-sectional view of the uniform film coating head of the present invention.

[0041] In the diagram: 1. Frame; 2. Silver paste box; 3. Coating mechanism; 4. Scraping mechanism; 5. Sliding mechanism; 6. Spinning clamping device; 7. Drying assembly; 8. Transfer assembly; 31. First robotic arm; 32. Multi-stage defoaming mechanism; 33. Film coating head; 321. Defoaming shell; 322. Vibrating shaft; 323. Flattening tray; 324. Liquid guide; 325. Vibrating plate; 326. Positioning column; 327. Spring; 328. Vibration starter; 3241 3242. Spikes; 3243. Arc-shaped guide plate; 3244. Groove; 3245. Point; 3251. Lower vibrator head; 3281. Gear; 3282. Rotating rod; 3283. Upper vibrator head; 331. Liquid chamber; 332. Concave plate; 333. Liquid equalization plate; 334. Liquid trough; 41. Second robotic arm; 42. Scraper; 61. Motor; 62. Turntable; 63. Gear plate; 64. Electric telescopic rod; 65. Base support block; 3231. Overflow trough. Detailed Implementation

[0042] 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.

[0043] like Figures 1-10 As shown, the present invention provides a technical solution for a non-dead-angle circular electrode curved surface paste coating device: including a frame 1, a silver paste box 2 installed on the frame 1, a drying component 7 installed on the frame 1, a transfer component 8 slidably installed on the frame 1, a sliding mechanism 5 installed on the frame 1, a coating mechanism 3 installed on the frame 1, and a scraping mechanism 4 installed on the frame 1. The coating mechanism 3 and the scraping mechanism 4 are respectively located on both sides of the silver paste box 2. A self-rotating clamping device 6 is installed on the sliding mechanism 5. The self-rotating clamping device 6 meshes and drives with the coating mechanism 3. The silver paste box 2 is connected to the coating mechanism 3.

[0044] The sliding mechanism 5 is used to drive the spin clamping device 6 to move horizontally and vertically. The transfer assembly 8 is used to move the coated electrode to the drying assembly 7. The drying assembly 7 consists of a cylinder and a drying chamber. The cylinder drives the drying chamber to extend and retract, using the drying chamber to cover and dry the coated electrode. After the drying process is completed, the drying chamber is lifted away from the electrode sheet. The frame 1 is equipped with a control system for controlling the entire coating device.

[0045] The self-spinning clamping device 6 includes a motor 61, which is mounted on the sliding mechanism 5. A turntable 62 is mounted on the output shaft of the motor 61. An electric telescopic rod 64 is mounted on the bottom of the turntable 62. A gear 63 is mounted on the turntable 62. The gear 63 meshes with a gear 3281 for transmission. A bottom support block 65 is mounted on the bottom of the output shaft of the electric telescopic rod 64.

[0046] The coating mechanism 3 includes a first robotic arm 31, which is mounted on the frame 1. A multi-stage defoaming mechanism 32 is installed on the first robotic arm 31. A uniform film coating head 33 is installed at the bottom of the multi-stage defoaming mechanism 32. The multi-stage defoaming mechanism 32 is engaged with the spin clamping device 6 for transmission. The multi-stage defoaming mechanism 32 is connected to the silver paste box 2 through a pipe.

[0047] The multi-stage defoaming device also includes several positioning columns 326, a vibrating plate 325, and a vibration starter 328. The vibrating plate 325 is installed at the top of the vibrating shaft 322, the positioning columns 326 are installed inside the defoaming shell 321, the vibrating plate 325 and the positioning columns 326 are slidably connected, a spring 327 is installed between the vibrating plate 325 and the defoaming shell 321, and the vibration starter 328 is rotatably installed inside the defoaming shell 321. The vibration starter 328 is engaged with the self-rotating clamping device 6 for transmission.

[0048] The vibration element 328 includes a rotating rod 3282, which is rotatably installed inside the bubble removal shell 321. A gear 3281 is installed at the top of the rotating rod 3282, and the gear 3281 meshes with the self-spinning clamping device 6 for transmission. Several upper vibration heads 3283 are installed at the bottom of the rotating rod 3282, and several lower vibration heads 3251 are provided at the top of the vibrating plate 325.

[0049] The liquid guide 324 includes a barb 3241, an arc-shaped guide plate 3242 is installed on the barb 3241, a groove 3243 is provided on the arc-shaped guide plate 3242, the barb 3241 is connected to the flange of the flat plate 323, and a pointed tip 3244 is provided at the top of the barb 3241, which is located at the overflow groove 3231.

[0050] The multi-stage defoaming device includes a defoaming shell 321, which is mounted on a first robotic arm 31. A vibrating shaft 322 is slidably installed inside the defoaming shell 321. Several flattening discs 323 are mounted on the vibrating shaft 322. The flattening discs 323 have a planar circular structure with flanges at their edges. Several overflow grooves 3231 are provided on the flanges of the flattening discs 3231. Liquid guides 324 are installed at the overflow grooves 3231. The bottom ends of the liquid guides 324 converge towards the vibrating shaft 322. The top of the defoaming shell 321 has a paste inlet, which is connected to the silver paste box 2 through a pipe. A liquid extraction device is provided on the pipe connecting the paste inlet and the silver paste box 2. The liquid extraction device is used to extract the silver paste in the silver paste box 2 and transport it to the paste inlet on the defoaming shell 321.

[0051] The uniform film coating head 33 has a liquid cavity 331 inside, a uniform liquid plate 333 inside the liquid cavity 331, a plurality of liquid grooves 334 on the uniform liquid plate 333, a concave plate 332 on the uniform film coating head 33, and a plurality of liquid outlet holes on the concave plate 332.

[0052] The scraping mechanism 4 includes a second robotic arm 41, which is mounted on the frame 1. A scraper 42 is mounted on the second robotic arm 41, and the scraper 42 has a concave structure.

[0053] The working principle of this invention is as follows: Before coating, the opening of the circular electrode is first inserted into the output shaft of the electric telescopic rod 64, and the bottom support block 65 is installed at the bottom end of the output shaft of the electric telescopic rod 64. The bottom support block 65 firmly supports the circular electrode, achieving reliable positioning and fixation of the circular electrode, ensuring its coaxiality is stable and its posture does not shift during the subsequent rotational coating process.

[0054] Subsequently, the control system activates the sliding mechanism 5, which drives the spin clamping device 6 to move horizontally and vertically. Simultaneously, the spin clamping device 6 smoothly moves the circular electrode to the coating area above the silver paste box 2. This arrangement allows for precise switching from loading to coating position without disassembling the workpiece, improving operational efficiency and automation.

[0055] Once the electrode is in position, the control system simultaneously activates the electric telescopic rod 64, the first robotic arm 31, and the second robotic arm 41. The output shaft of the electric telescopic rod 64 drives the circular electrode to make minor adjustments to its position via the base block 65; the first robotic arm 31 moves the coating mechanism 3; and the second robotic arm 41 moves the scraper 42 closer to the workpiece. Finally, the concave plate 332 on the uniform coating head 33 precisely engages with the convex ring on the side of the circular electrode, and the gear 3281 meshes with the gear disc 63, causing the scraper 42 to also engage with the convex ring on the side of the circular electrode. Based on the set coating thickness, the control system independently adjusts the gaps between the concave plate 332, the scraper 42, and the side of the motor 61 via the two robotic arms, ensuring that the distance between them and the convex ring reaches the preset value, guaranteeing the accuracy of the coating thickness.

[0056] After the position adjustment is completed, the control system starts the liquid extraction device and drive motor 61.

[0057] The output shaft of motor 61 drives the electric telescopic rod 64 to rotate via turntable 62, causing the circular electrode to rotate. Simultaneously, turntable 62 drives gear 63 to rotate, which in turn drives gear 3281 to rotate, which in turn drives rotating rod 3282 to rotate. The upper vibrating head 3283 at the lower end of rotating rod 3282 periodically contacts the lower vibrating head 3251 at the top of vibrating disk 325. When the upper vibrating head 3283 rotates above the lower vibrating head 3251, it applies pressure, causing the lower vibrating head 3251 to push the vibrating disk 325 downwards and compress spring 327. When the upper vibrating head 3283 rotates away from the contact position, spring 327 rebounds, causing the vibrating disk 325 and vibrating shaft 322 to return to their original position. This cycle repeats, causing vibrating shaft 322 to reciprocate up and down, and driving several flat discs 323 to vibrate synchronously.

[0058] The pumping device continuously draws silver paste from the silver paste box 2 through a pipe to the inlet at the top of the defoaming shell 321. The silver paste falls from top to bottom onto the top-level flat plate 323. As the vibrating plate 325 vibrates, the silver paste forms a thin layer on the plate surface. The liquid disturbance causes some bubbles in the silver paste to rise and burst rapidly, while other tiny bubbles merge into larger bubbles under the vibration shearing and rise. As the silver paste accumulates, excess silver paste begins to flow out from the overflow groove 3231 on the flange of the flat plate 323. The remaining larger bubbles are punctured by the tips 3244 of the barbs 3241 when they come into contact with them. Then, the silver paste is guided to the vibrating shaft 322 along the grooves 3243 on the barbs 3241 and the arc-shaped guide plate 3242, and falls down to the next-level vibrating plate 325. After multi-stage defoaming treatment, the silver paste is introduced into the liquid chamber 331 along the bottom of the vibrating shaft 322. This ensures that the internal bubble content of the silver paste is significantly reduced after multi-stage degassing, effectively improving the quality of subsequent coatings.

[0059] The defoamed silver paste, after undergoing multi-stage degassing, converges at the bottom of the vibrating shaft 322 and flows into the liquid chamber 331 of the uniform film coating head 33. The uniform plate 333 within the liquid chamber 331 divides the incoming silver paste into several equal streams, which flow through the liquid tank 334 and are further distributed to the concave plate 332 area. The silver paste is evenly discharged through multiple outlet holes on the concave plate 332, forming a multi-point synchronous discharge distribution pattern, ensuring that all points on the convex side of the circular electrode receive the same flow rate of paste. As the electrode spins, the paste outlet surface of the concave plate 332 forms a continuous coating band on the side of the workpiece, and the silver paste is evenly adhered to the curved surface of the electrode.

[0060] When the electrode rotates to the position of the scraper 42, the concave scraping surface of the scraper 42 fits against the convex ring of the electrode, performing a secondary smoothing of the coated layer, leveling out local thickness differences, making the coating thickness more uniform, and the surface smoother. During this process, the silver paste overflowing from the uniform coating head 33 and the silver paste scraped off by the scraper 42 fall into the silver paste box 2 below along the direction of gravity and are collected and reused, realizing closed-loop utilization of raw materials, reducing silver paste waste and maintaining a clean working environment.

[0061] After the silver paste is applied, the control system removes the coating mechanism 3 and the scraping mechanism 4 via the first robotic arm 31 and the second robotic arm 41. Then, the sliding mechanism 5 drives the self-rotating clamping device 6 to move to the transfer assembly 8. After the bottom support block 65 is removed by the tool, the control system controls the output shaft of the electric telescopic rod 64 to retract and pull it away from the hole on the circular electrode. The transfer assembly 8 drives the coated electrode to move to the drying assembly 7. The control system drives the drying chamber to extend and retract via the cylinder. The drying chamber is used to cover and dry the coated electrode. After the drying process is completed, the drying chamber is lifted away from the electrode sheet.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for coating slurry onto a circular electrode surface without dead angles, comprising a frame (1), a silver paste box (2) mounted on the frame (1), a drying assembly (7) mounted on the frame (1), a transfer assembly (8) slidably mounted on the frame (1), and a sliding mechanism (5) mounted on the frame (1), characterized in that: The frame (1) is equipped with a coating mechanism (3) and a scraping mechanism (4). The coating mechanism (3) and the scraping mechanism (4) are located on both sides of the silver paste box (2). The sliding mechanism (5) is equipped with a spin clamping device (6). The spin clamping device (6) meshes with the coating mechanism (3) for transmission. The silver paste box (2) is connected to the coating mechanism (3).

2. The device for applying slurry to a circular electrode surface without dead angles according to claim 1, characterized in that: The coating mechanism (3) includes a first robotic arm (31), which is mounted on a frame (1). A multi-stage defoaming mechanism (32) is mounted on the first robotic arm (31). A uniform film coating head (33) is mounted at the bottom of the multi-stage defoaming mechanism (32). The multi-stage defoaming mechanism (32) is engaged with a spin clamping device (6) for transmission. The multi-stage defoaming mechanism (32) is connected to the silver paste box (2) through a pipe.

3. The device for applying slurry to a circular electrode surface without dead angles according to claim 2, characterized in that: The multi-stage defoaming device includes a defoaming shell (321), which is mounted on a first robotic arm (31). A vibration shaft (322) is slidably installed inside the defoaming shell (321). Several flattening discs (323) are mounted on the vibration shaft (322). The flattening discs (323) are flat disc structures. The edges of the flattening discs (323) are provided with flanges. Several overflow grooves (3231) are provided on the flanges of the flattening discs (323). Liquid guides (324) are installed at the overflow grooves (3231). The bottom ends of several liquid guides (324) converge toward the vibration shaft (322). The top of the defoaming shell (321) is provided with a paste inlet. The paste inlet is connected to the silver paste box (2) through a pipe.

4. The device for applying slurry to a circular electrode surface without dead angles according to claim 3, characterized in that: The multi-stage defoaming device also includes several positioning columns (326), a vibrating plate (325), and a vibration starter (328). The vibrating plate (325) is installed at the top of the vibrating shaft (322), the positioning column (326) is installed inside the defoaming shell (321), the vibrating plate (325) is slidably connected to the positioning column (326), a spring (327) is installed between the vibrating plate (325) and the defoaming shell (321), and the vibration starter (328) is rotatably installed inside the defoaming shell (321). The vibration starter (328) is engaged with the spin clamping device (6) for transmission.

5. The device for applying slurry to a circular electrode surface without dead angles according to claim 4, characterized in that: The vibration starter (328) includes a rotating rod (3282), which is rotatably installed inside the bubble removal shell (321). A gear (3281) is installed at the top of the rotating rod (3282), and the gear (3281) meshes with the spin clamping device (6) for transmission. Several upper vibration heads (3283) are installed at the bottom of the rotating rod (3282), and several lower vibration heads (3251) are provided at the top of the vibrating plate (325).

6. The device for applying slurry to a circular electrode surface without dead angles according to claim 3, characterized in that: The liquid guide (324) includes a barb (3241), an arc-shaped guide plate (3242) is installed on the barb (3241), the arc-shaped guide plate (3242) is provided with a groove (3243), the barb (3241) is connected to the flange of the flat plate (323), and the top of the barb (3241) is provided with a tip (3244), the tip (3244) is located at the overflow groove (3231).

7. The device for applying slurry to a circular electrode surface without dead angles according to claim 2, characterized in that: The uniform film coating head (33) is provided with a liquid cavity (331), the liquid cavity (331) is provided with a liquid equalization plate (333), the liquid equalization plate (333) is provided with a plurality of liquid grooves (334), the uniform film coating head (33) is provided with a concave plate (332), and the concave plate (332) is provided with a plurality of liquid outlet holes.

8. The device for applying slurry to a circular electrode surface without dead angles according to claim 5, characterized in that: The self-spinning clamping device (6) includes a motor (61), which is mounted on a sliding mechanism (5). A turntable (62) is mounted on the output shaft of the motor (61). An electric telescopic rod (64) is mounted on the bottom end of the turntable (62). A gear plate (63) is mounted on the turntable (62). The gear plate (63) meshes with a gear (3281) for transmission. A bottom support block (65) is mounted on the bottom end of the output shaft of the electric telescopic rod (64).

9. The device for applying slurry to a circular electrode surface without dead angles according to claim 1, characterized in that: The scraping mechanism (4) includes a second robotic arm (41), which is mounted on the frame (1). A scraper (42) is mounted on the second robotic arm (41), and the scraper (42) has a concave structure.

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