A lead-acid battery grid pasting device

Abstract

The utility model discloses a lead -acid battery grid pasting device, including frame and the conveying belt of being located on the frame, is equipped with the pasting hopper of incline setting on the conveying belt, and the position of pasting hopper near the conveying belt is equipped with the discharge gate, is equipped with the extrusion paste pair roller in pasting hopper, and the tangent below of extrusion paste pair roller is equipped with the guide plate, and one end of guide plate is rotatably connected in pasting hopper, and with the roll surface sliding abutment of one extrusion paste pair roller, and the other end is towards the discharge gate, and the discharge passage is formed between guide plate and another extrusion paste pair roller, realizes the extrusion of lead paste in from extrusion paste pair roller, will be more closely attached on the roll surface of the extrusion paste pair roller below under the action of gravity, avoids the paste body vertical drop, so that lead paste approaches the gradually covered grid surface on the conveying belt below of the inclined angle of level, effectively reduces the flash or uneven accumulation phenomenon caused by the free falling of paste body, greatly improves the initial spreading uniformity and dense attachment effect of lead paste on the grid.

Description

Technical Field

[0001] This utility model relates to the field of battery grid coating, and in particular to a lead-acid battery grid coating device. Background Technology

[0002] The grid is one of the most important components of a lead-acid battery. After the grid is produced, lead paste needs to be applied to it. The existing lead paste application equipment uses a coating machine, and one of the important pieces of equipment in the coating machine is the paste hopper.

[0003] The prior art (application number: CN202222481059.X) describes a process where "lead paste is stirred by a stirring blade in the paste hopper, then squeezed by a paste extrusion roller assembly, and finally flows out through the lead paste outlet and accumulates on the grid surface. A reverse roller pushes excess lead paste back into the paste hopper through high-speed reverse rotation to ensure the weight of the paste. The reverse roller mechanism can be height-adjusted to facilitate control of the lead paste coating thickness, thereby improving the quality of the battery grid." However, in the prior art, the lead paste that flows vertically from the lead paste outlet accumulates on the grid surface, affecting the uniformity of the paste coating on the battery grid. Utility Model Content

[0004] The purpose of this invention is to provide a lead-acid battery grid paste coating device that solves the problem in the prior art where lead paste flowing vertically from the paste outlet accumulates on the surface of the grid, affecting the uniformity of the paste coating.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lead-acid battery grid coating device, comprising a frame and a conveyor belt mounted on the frame, an inclined coating hopper on the conveyor belt, a discharge port near the conveyor belt, a pair of extrusion rollers inside the coating hopper, a guide plate below the tangent of the extrusion rollers, one end of the guide plate being rotatably connected inside the coating hopper and slidingly abutting against the roller surface of one of the extrusion rollers, and the other end facing the discharge port, forming a discharge channel between the guide plate and the other extrusion roller, and an adjustment device on the coating hopper for pushing the guide plate to change the gap of the discharge channel.

[0006] Furthermore, the adjusting device includes a sliding plate, a directional bearing, a push rod, and a driving component. The sliding plate is slidably connected to the bottom of the paste hopper and abuts against the back of the guide plate. The directional bearing is disposed on the inner bottom surface of the paste hopper. The push rod passes through the directional bearing and is fixedly connected to the sliding plate. The push rod extends out of the outer side of the paste hopper. The driving component is connected to the push rod.

[0007] Furthermore, the driving component includes a linkage plate, a driving screw, and a driving nut. The linkage plate is fixedly connected to the outer end of the push rod. The driving screw is located on the outside of the paste hopper. The linkage plate is slidably connected to the driving screw. The driving nut is rotatably connected to the linkage plate and meshes with the driving screw.

[0008] Furthermore, the paste hopper also includes a discharge pipe connected to the inside of the paste hopper.

[0009] Furthermore, the discharge port of the paste hopper is equipped with a scraper.

[0010] Furthermore, the conveyor belt is equipped with pressure rollers behind the paste hopper.

[0011] Furthermore, a flexible rubber plate is provided between the guide plate and the extrusion rollers.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The core beneficial effect of this lead-acid battery grid coating device is that it significantly improves the quality, uniformity, and production efficiency of the coating.

[0014] First, the inclined coating hopper positions the two internal extrusion rollers at different heights. This allows the lead paste, when extruded from the rollers, to adhere more tightly to the surface of the lower roller under gravity, preventing the paste from falling vertically. This allows the lead paste to gradually cover the grid surface on the conveyor belt below at a gentler, near-horizontal angle. This angled contact effectively reduces splashing, burrs, or uneven accumulation caused by the free fall of the paste, significantly improving the initial uniformity and dense adhesion of the lead paste on the grid, laying a solid foundation for subsequent compaction and curing.

[0015] Secondly, one end of the guide plate slides against the surface of the extrusion rollers below, while the other end guides the discharge port. Its shape conforms to the movement angle of the lead paste after it leaves the extrusion rollers. A wedge-shaped discharge channel with a specific gap is formed between the guide plate and the extrusion rollers above. When the lead paste passes through this narrow channel, it is subjected to strong compression and restriction. On the one hand, the channel itself physically shapes the lead paste, precisely controlling the thickness and shape of the paste finally coated on the grid, ensuring uniformity of the layer thickness. On the other hand, and more importantly, this compression effect achieves pre-compactment of the lead paste, greatly improving the density of the paste, effectively reducing internal pores, making the final coating structure more compact, and significantly enhancing adhesion. This directly improves the mechanical strength and electrochemical performance of the subsequent electrode plates.

[0016] Finally, the equipped adjustment device allows the angle of the guide plate to be changed, thereby adjusting the gap between the guide plate and the upper extrusion rollers, and realizing the adjustment of the paste thickness.

[0017] In summary, by innovatively combining an inclined coating hopper, an adjustable gap guide plate structure, and its pre-compacting function, this utility model achieves stable inclined application of lead paste, precise shaping control, paste compaction, and flexible thickness adjustment, ultimately comprehensively improving the quality (uniformity, density, and adhesion) of the coated products and the efficiency and flexibility of production operations. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the driving component of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the paste applicator;

[0021] Figure 3 This is a schematic diagram of the guide plate and the sliding plate.

[0022] In the diagram: 1. Frame, 2. Conveyor belt, 3. Paste hopper, 31. Discharge port, 32. Paste extrusion rollers, 33. Guide plate, 34. Discharge channel, 4. Adjustment device, 41. Sliding plate, 42. Directional bearing, 43. Push rod, 44. Drive component, 441. Linkage plate, 442. Drive screw, 443. Drive nut, 5. Feed pipe, 6. Scraper, 7. Paste pressing rollers, 8. Flexible adhesive plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0024] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0025] like Figures 1 to 3As shown, this utility model provides a lead-acid battery grid paste coating device, including a frame 1 and a conveyor belt 2 mounted on the frame 1; a paste hopper 3 is installed at an incline on the conveyor belt 2, and a discharge port 31 is provided at one end of the paste hopper 3 near the conveyor belt 2; a pair of extrusion rollers 32 are installed inside the paste hopper 3; a guide plate 33 is provided directly below the tangent of the extrusion rollers 32, one end of the guide plate 33 is pivotally connected to the inner wall of the paste hopper 3, and this end continuously slides and abuts against the roller surface of the extrusion rollers 32 below, while the other end extends obliquely and points towards the discharge port 31; a wedge-shaped discharge channel 34 is formed between the upper surface of the guide plate 33 and the roller surface of the extrusion rollers 32 above; in addition, an adjustment device 4 (such as a screw or cylinder) is also installed on the paste hopper 3, which can precisely change the guide plate by pushing the guide plate 33 to rotate around the pivot. The gap between plate 33 and the upper extrusion roller 32 is adjusted to change the width of the discharge channel 34. The inclined layout of the paste hopper 3 and the synergistic effect of the guide plate 33 first guide the lead paste to naturally adhere to the roller surface of the lower extrusion roller 32 by gravity, ensuring that it evenly and stably covers the grid surface on the conveyor belt 2 at a gentle inclination angle, effectively avoiding impact splashing caused by vertical falling. Secondly, as the lead paste is forced through the wedge-shaped adjustable discharge channel 34, it is guided by the guide plate 33, squeezed and shaped by the channel wall, and continuously compressed, which significantly improves the density of the paste (reduces air bubbles) and precisely controls its final coating thickness and contour shape. Finally, thanks to the convenient and precise adjustment capability of the adjustment device 4 to the gap of the discharge channel 34, the device can quickly adapt to different thickness process requirements, greatly improving production flexibility and efficiency.

[0026] A sliding plate 41 is provided at the bottom of the paste hopper 3, with its top elastically abutting against the back of the guide plate 33. A directional bearing 42 is installed on the inner bottom surface of the paste hopper 3. A push rod 43 passes through the directional bearing 42 and is fixed to the sliding plate 41. Its outer end extends to the outside of the paste hopper 3 and is connected to the drive component 44. The directional bearing 42 constrains the linear movement of the push rod 43, and the sliding plate 41 smoothly transmits the translational force to the guide plate 33, eliminating mechanical gaps and vibration interference, ensuring that the gap adjustment process of the discharge channel 34 is stable and without shaking, and achieving precise control of the paste thickness.

[0027] The driving component 44 consists of a linkage plate 441, a driving screw 442, and a driving nut 443. The linkage plate 441 is vertically fixed to the outer end of the push rod 43 and sleeved on the horizontal driving screw 442. The driving nut 443 is embedded in the side wall of the linkage plate 441 through a bearing and forms a meshing transmission with the driving screw 442. Rotating the driving nut 443 drives the linkage plate 441 to move along the screw axis. The helical pair structure provides high mechanical gain and self-locking function, which can realize fine adjustment of precision and automatically lock the position to prevent gap displacement caused by production vibration.

[0028] A through-feed pipe 5 is added to the top of the paste hopper 3, with the upper end connected to the lead paste supply system and the lower end connected to the inside of the paste hopper 3; this realizes continuous and automated replenishment of lead paste, completely eliminates the interruption of manual feeding, and ensures the uniformity of paste density in high-speed production.

[0029] The edge of the discharge port 31 of the paste hopper 3 is equipped with a scraper 6 with a cutting edge parallel to the conveyor belt 2. The cutting edge maintains a precise gap of 0.05-0.2mm with the upper surface of the grid. The edge of the coated paste is trimmed in time to completely remove the burrs and ensure that the straightness error of the paste outline is ≤0.3mm, which significantly reduces the risk of short circuit of the battery plates.

[0030] The conveyor belt 2 is equipped with a pressing roller 7 behind the paste hopper 3. It consists of upper and lower double rollers with adjustable spacing, with an adjustment range of 1 to 5 mm. The initial paste is subjected to secondary rolling and densification treatment, which reduces the porosity of the paste by more than 40% and increases the peel strength to more than 1.5 N / mm, effectively preventing the active material from falling off during battery use.

[0031] The guide plate 33 and the extrusion roller 32 are fitted with a flexible rubber plate 8 made of corrosion-resistant silicone at their contact ends. The curved surface of the rubber plate is dynamically sealed to the roller surface. The elastic rubber plate completely prevents the lead paste from seeping into the gap of the moving pair and prevents the paste from hardening and jamming. It also compensates for mechanical vibration and assembly tolerances, extending the life of key components by more than 2 times.

[0032] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A lead-acid battery grid paste coating device, comprising a frame and a conveyor belt disposed on the frame, characterized in that, The conveyor belt is equipped with an inclined paste hopper. The paste hopper has a discharge port near the conveyor belt. The paste hopper is equipped with a paste extrusion roller pair. A guide plate is located below the tangent of the paste extrusion roller pair. One end of the guide plate is rotatably connected to the paste hopper and slides against the roller surface of one of the paste extrusion roller pairs. The other end faces the discharge port. A discharge channel is formed between the guide plate and the other paste extrusion roller pair. The paste hopper is also equipped with an adjustment device that pushes the guide plate to change the gap of the discharge channel.

2. The lead-acid battery grid paste coating device according to claim 1, characterized in that, The adjusting device includes a sliding plate, a directional bearing, a push rod, and a driving component. The sliding plate is slidably connected to the bottom of the coating hopper and abuts against the back of the guide plate. The directional bearing is disposed on the inner bottom surface of the coating hopper. The push rod passes through the directional bearing and is fixedly connected to the sliding plate. The push rod extends out of the outer side of the coating hopper. The driving component is connected to the push rod.

3. The lead-acid battery grid paste coating device according to claim 2, characterized in that, The driving component includes a linkage plate, a driving screw, and a driving nut. The linkage plate is fixedly connected to the outer end of the push rod. The driving screw is located on the outside of the paste hopper. The linkage plate is slidably connected to the driving screw. The driving nut is rotatably connected to the linkage plate and meshes with the driving screw.

4. The lead-acid battery grid paste coating device according to claim 1, characterized in that, The paste hopper also includes a discharge pipe that connects to the inside of the paste hopper.

5. The lead-acid battery grid paste coating device according to claim 1, characterized in that, The discharge port of the paste hopper is equipped with a scraper.

6. The lead-acid battery grid paste coating device according to claim 1, characterized in that, The conveyor belt is equipped with pressing rollers behind the paste hopper.

7. The lead-acid battery grid paste coating device according to claim 1, characterized in that, A flexible rubber plate is provided between the guide plate and the extrusion rollers.

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