Coating machine capable of coating two sides

Abstract

The utility model discloses a coating machine capable of double-sided coating, which belongs to the technical field of coating machines and comprises a bottom plate, supporting columns are fixedly mounted at four corners of the top of the bottom plate, a first mounting plate is fixedly mounted at the top ends of two groups of supporting columns on the same side of the top of the bottom plate, and a second mounting plate is arranged at the top of the first mounting plate. According to the coating machine capable of coating the two sides, after positive and negative electrode mixed slurry is injected into the two slurry boxes respectively, a metal foil penetrates through the two sets of tightly-attached coating rollers, the two sets of coating rollers are tightly attached to the surfaces of the two sides of the metal foil, the two sets of coating rollers are controlled to synchronously roll on one sides of the slurry boxes, and the positive and negative electrode mixed slurry is attached to the surfaces of the coating rollers; and the scraper blade is pressed on the surface of the coating roller under the rebound action of the pressure spring, so that positive and negative electrode mixed slurry on the surface of the coating roller is scraped to be flat, and the phenomenon that the coating effect of the coating roller on the surface of a metal foil is influenced due to obvious difference of the thicknesses of the positive and negative electrode mixed slurry adhered to the surface of the coating roller is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of coating machines, and particularly relates to a coating machine capable of double-sided coating. Background Art

[0002] During the production and manufacturing process of batteries, coating machines are often used to uniformly coat the positive and negative mixed slurries on the surfaces of both sides of metal foils. The distribution of the positive and negative mixed slurries on the surface of the metal foil is crucial for the performance stability and energy density of the battery during the charging and discharging processes.

[0003] When the existing coating machine coats the surface of the metal foil, the thickness of the slurry adhered to the coating roller during the rolling of the positive and negative mixed slurries is uneven, which is likely to cause uneven coating of the positive and negative mixed slurries on the surface of the metal foil, thus affecting the stability and performance of the battery. Therefore, improvements are needed. Summary of the Utility Model

[0004] In order to overcome the above defects, the utility model provides a coating machine capable of double-sided coating, which solves the problem that when the existing coating machine coats the surface of the metal foil, the thickness of the slurry adhered to the coating roller during the rolling of the positive and negative mixed slurries is uneven, thus affecting the uniform coating of the surface of the metal foil.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A coating machine capable of double-sided coating, including a bottom plate. Four support columns are fixedly installed at the four corners of the top of the bottom plate. At the top ends of two groups of support columns on the same side of the top of the bottom plate, a first mounting plate is fixedly installed. A second mounting plate is arranged on the top of the first mounting plate, and the positions of the first mounting plate and the second mounting plate correspond to each other. On one side between the two groups of opposite first mounting plates and second mounting plates on the top of the bottom plate, slurry boxes are respectively fixedly installed. On one side of the inner top of the slurry box, an L-shaped guard plate is fixedly installed;

[0006] An installation strip is fixedly installed inside the L-shaped guard plate at the inner top of the slurry box. Five pressing rods are equidistantly slidably installed on one side of the installation strip. A scraper is fixedly installed at one end of the five pressing rods on one side of the installation strip. Compression springs are arranged on the surfaces of the pressing rods between the installation strip and the scraper. A connecting strip is fixedly installed at one end of the five pressing rods away from the scraper after passing through the installation strip. A cover plate is arranged on one side of the top of the slurry box.

[0007] As a further solution of the utility model: Fixing plates are respectively fixedly installed at both ends of one side of the first mounting plate and the second mounting plate. Electric push rods are fixedly installed between the opposite fixing plates at both ends of the same side of the first mounting plate and the second mounting plate.

[0008] As a further solution of the utility model: Coating rollers are respectively rotatably installed between two sets of opposite mounting plates one and mounting plates two at the top of the bottom plate, and the positions of the two coating rollers correspond to each other. One end of the two coating rollers passes through the mounting plate one or the mounting plate two and is respectively fixedly installed with straight gears, and the two straight gears are meshed with each other.

[0009] As a further solution of the utility model: A rotating motor is fixedly installed on one side of the mounting plate one, and a bevel gear is fixedly installed at the output end of the rotating motor. One end of the coating roller between the two mounting plates one passes through the mounting plate one and is fixedly installed with a bevel gear, and the two bevel gears are meshed with each other.

[0010] As a further solution of the utility model: A feeding port is provided on one side of the slurry box top away from the coating roller, and rectangular grooves are symmetrically arranged on both sides of the inner wall of the feeding port.

[0011] As a further solution of the utility model: Anti-slip patterns are provided on the top of the cover plate. Rectangular blocks are symmetrically and fixedly installed at both ends of the cover plate, and the rectangular blocks have the same shape as the rectangular grooves. Rubber cushion pads are respectively fixedly installed at the top and bottom of the rectangular blocks.

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

[0013] 1. For this double-sided coating coater, after injecting the positive and negative electrode mixed slurries into the two slurry boxes respectively, passing the metal foil through the two tightly attached coating rollers, making the two coating rollers tightly attached to the surfaces on both sides of the metal foil, controlling the two coating rollers to roll synchronously on one side of the slurry box, so that the surfaces of the coating rollers adhere to the positive and negative electrode mixed slurries. Under the rebounding action of the compression spring, pressing the scraper tightly on the surface of the coating roller, thereby leveling the positive and negative electrode mixed slurries on the surface of the coating roller, avoiding obvious differences in the thickness of the positive and negative electrode mixed slurries adhered to the surface of the coating roller, and affecting the coating effect of the coating roller on the surface of the metal foil.

[0014] 2. For this double-sided coating coater, by setting bevel gears, rotating motors, straight gears and electric push rods, controlling the electric push rod to extend, jacking up the mounting plate two away from the mounting plate one, expanding the distance between the two coating rollers, facilitating the processing personnel to pass the metal foil through between the two coating rollers. After the metal foil passes through the two coating rollers, controlling the electric push rod to contract, pressing down the mounting plate two close to the mounting plate one, making the two coating rollers tightly attached to both sides of the metal foil, adjusting the straight gears at one end of the two coating rollers to be meshed with each other, controlling the rotating motor to rotate, and under the meshing action of the bevel gears, controlling the coating roller between the two mounting plates one to rotate, and at the same time, driven by the meshing of the two straight gears, driving the coating roller between the two mounting plates two to rotate synchronously in the opposite direction, ensuring that the coating rollers on both sides of the metal foil rotate in opposite directions to coat the positive and negative electrode mixed slurries on the surface of the metal foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic cross-sectional structure view of the present utility model;

[0016] Figure 2 is a schematic cross-sectional structure view of the slurry box, scraper and compression spring of the present utility model;

[0017] Figure 3 is the present utility model Figure 2 an enlarged schematic structure view of part A in;

[0018] Figure 4 is a schematic cross-sectional structure view of the cover plate, rectangular block and rubber gasket of the present utility model;

[0019] In the figure: 1, bottom plate; 2, support column; 3, first mounting plate; 4, second mounting plate; 5, fixing plate; 6, electric push rod; 7, coating roller; 8, bevel gear; 9, rotating motor; 10, spur gear; 11, slurry box; 12, feeding port; 13, rectangular groove; 14, L-shaped guard plate; 15, mounting strip; 16, pressing rod; 17, scraper; 18, connecting strip; 19, compression spring; 20, cover plate; 21, anti-slip pattern; 22, rectangular block; 23, rubber gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions of this patent will be further described in detail below in conjunction with the specific embodiments.

[0021] As Figures 1-4 shown, the present utility model provides a technical solution: a double-sided coating machine, including a bottom plate 1, support columns 2 are fixedly installed at the four corners of the top of the bottom plate 1, two groups of support columns 2 at the same side of the top of the bottom plate 1 are fixedly installed with a first mounting plate 3 at the top, a second mounting plate 4 is arranged on the top of the first mounting plate 3, and the positions of the first mounting plate 3 and the second mounting plate 4 correspond to each other. Fixing plates 5 are fixedly installed at both ends of one side of the first mounting plate 3 and the second mounting plate 4 respectively. An electric push rod 6 is fixedly installed between the fixing plates 5 opposite to each other at both ends of the same side of the first mounting plate 3 and the second mounting plate 4. By providing the electric push rod 6, controlling the synchronous expansion and contraction of the four groups of electric push rods 6 enables the second mounting plate 4 to move up and down on the top of the first mounting plate 3 to adjust the distance between the two coating rollers 7.

[0022] On the top of the bottom plate 1, two sets of opposite mounting plates 3 and 4 are respectively rotatably installed with coating rollers 7, and the positions of the two sets of coating rollers 7 correspond to each other. One end of the two sets of coating rollers 7 passes through the mounting plate 3 or the mounting plate 4 and is respectively fixedly installed with spur gears 10, and the two sets of spur gears 10 mesh with each other. Due to the presence of the spur gears 10, the two sets of meshing spur gears 10 rotate in opposite directions when rotating, so that the directions of the two sets of coating rollers 7 when coating on the surface of the metal foil are opposite, and the positive and negative electrode mixed slurry can be coated on the surface of the metal foil.

[0023] On one side of the mounting plate 3, a rotating motor 9 is fixedly installed, and a bevel gear 8 is fixedly installed at the output end of the rotating motor 9. One end of the coating roller 7 between the two sets of mounting plates 3 passes through the mounting plate 3 and is fixedly installed with a bevel gear 8, and the two sets of bevel gears 8 mesh with each other. By providing the rotating motor 9 and controlling the rotation of the rotating motor 9, under the meshing of the two sets of bevel gears 8, the rotation of the rotating motor 9 is transmitted to the coating roller 7, thereby controlling the rotation of the coating roller 7 between the two sets of mounting plates 3.

[0024] On one side between the two sets of opposite mounting plates 3 and 4 on the top of the bottom plate 1, slurry boxes 11 are respectively fixedly installed. On one side of the inner top of the slurry box 11, an L-shaped guard plate 14 is fixedly installed. Due to the presence of the L-shaped guard plate 14, when the positive and negative electrode mixed slurry is injected from the feeding port 12, the splashed positive and negative electrode mixed slurry is blocked by the L-shaped guard plate 14, preventing the splashed positive and negative electrode mixed slurry from directly falling on the surface of the mounting strip 15 and the compression spring 19, and increasing the resistance when the compression spring 19 rebounds;

[0025] Inside the slurry box 11, on the inner top and inside the L-shaped guard plate 14, a mounting strip 15 is fixedly installed. Five pressing rods 16 are equidistantly slidably installed on one side of the mounting strip 15. One end of the five pressing rods 16 on one side of the mounting strip 15 is fixedly installed with a scraper 17. A compression spring 19 is provided on the surface of the pressing rod 16 between the mounting strip 15 and the scraper 17. One end of the five pressing rods 16 away from the scraper 17 passes through the mounting strip 15 and is fixedly installed with a connecting strip 18. By providing the compression spring 19 and the scraper 17, under the rebounding action of the compression spring 19, the scraper 17 is pressed against the surface of the coating roller 7, thereby scraping off the excess positive and negative electrode mixed slurry on the surface of the coating roller 7.

[0026] On one side of the top of the slurry box 11 away from the coating roller 7, a feeding port 12 is provided. On both sides of the inner wall of the feeding port 12, rectangular grooves 13 are symmetrically provided. On one side of the top of the slurry box 11, a cover plate 20 is provided. On the top of the cover plate 20, anti-slip patterns 21 are provided. At both ends of the cover plate 20, rectangular blocks 22 are symmetrically and fixedly installed. The rectangular blocks 22 have the same shape as the rectangular grooves 13. Rubber gaskets 23 are fixedly installed on the top and bottom of the rectangular blocks 22 respectively. Due to the rubber gaskets 23, when the cover plate 20 is covered inside the feeding port 12 and the rectangular blocks 22 are inserted into the corresponding rectangular grooves 13, the rubber gaskets 23 are squeezed and deformed between the rectangular blocks 22 and the rectangular grooves 13, thereby clamping and fixing the cover plate 20 in the feeding port 12 to prevent dust and impurities in the environment from falling into the slurry box 11 through the feeding port 12.

[0027] The working principle of the present utility model is as follows:

[0028] After injecting an appropriate amount of positive and negative electrode mixed slurry into the two slurry boxes 11, insert the cover plate 20 into the feeding port 12 to make the rubber gaskets 23 squeezed and deformed inside the rectangular grooves 13, thereby clamping and fixing the cover plate 20. Control the four electric push rods 6 to extend synchronously, so that the two coating rollers 7 move away from each other. After passing the metal foil through between the two coating rollers 7, control the four electric push rods 6 to contract synchronously, so that the two coating rollers 7 approach each other and tightly adhere to the surfaces on both sides of the metal foil. At the same time, adjust the two spur gears 10 until the two spur gears 10 mesh with each other. Control the rotation motor 9 to rotate, drive the coating roller 7 between the two mounting plates one 3 to rotate. Under the meshing of the two spur gears 10, the coating roller 7 between the two mounting plates two 4 rotates synchronously in the opposite direction. The surface of the coating roller 7 rotates on one side of the slurry box 11, so that the surface of the coating roller 7 adheres to the positive and negative electrode mixed slurry. Under the rebounding action of the compression spring 19, the scraper 17 is pressed against the surface of the coating roller 7, thereby scraping off the positive and negative electrode mixed slurry adhered more on the surface of the coating roller 7 to ensure that the thickness of the positive and negative electrode mixed slurry on the surface of the coating roller 7 is uniform, and the thickness of the positive and negative electrode mixed slurry is uniform when coating the surface of the metal foil.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0030] The above describes in detail the preferred embodiments of this patent. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of this patent.

Claims

1. A double-sided coating machine, comprising a bottom plate (1), characterized in that: Support columns (2) are fixedly installed at the four corners of the top of the bottom plate (1). At the tops of two groups of support columns (2) on the same side of the top of the bottom plate (1), a first mounting plate (3) is fixedly installed. A second mounting plate (4) is provided on the top of the first mounting plate (3), and the positions of the first mounting plate (3) and the second mounting plate (4) correspond to each other. On one side between two groups of opposite first mounting plates (3) and second mounting plates (4) on the top of the bottom plate (1), a slurry box (11) is fixedly installed respectively. On one side of the inner top of the slurry box (11), an L-shaped guard plate (14) is fixedly installed. An installation strip (15) is fixedly installed inside the L-shaped guard plate (14) at the inner top of the slurry box (11). Five pressing rods (16) are equidistantly slidably installed on one side of the installation strip (15). At one ends of the five pressing rods (16) on one side of the installation strip (15), a scraper (17) is fixedly installed. A pressing spring (19) is provided on the surface of the pressing rod (16) between the installation strip (15) and the scraper (17). At one ends of the five pressing rods (16) far from the scraper (17), a connecting strip (18) is fixedly installed through the installation strip (15). On one side of the top of the slurry box (11), a cover plate (20) is provided.

2. The coating machine capable of double-sided coating according to claim 1, wherein: Fixed plates (5) are fixedly installed at both ends of one side of the first mounting plate (3) and the second mounting plate (4). An electric push rod (6) is fixedly installed between the opposite fixed plates (5) at both ends of the same side of the first mounting plate (3) and the second mounting plate (4).

3. The coating machine capable of double-sided coating according to claim 1, characterized in that: Coating rollers (7) are rotatably installed between two groups of opposite first mounting plates (3) and second mounting plates (4) on the top of the bottom plate (1), and the positions of the two coating rollers (7) correspond to each other. One ends of the two coating rollers (7) pass through the first mounting plate (3) or the second mounting plate (4) and are respectively fixedly installed with spur gears (10), and the two spur gears (10) are meshed with each other.

4. The coating machine capable of double-sided coating according to claim 3, wherein: A rotating motor (9) is fixedly installed on one side of the first mounting plate (3), and a bevel gear (8) is fixedly installed at the output end of the rotating motor (9). One end of the coating roller (7) between the two first mounting plates (3) passes through the first mounting plate (3) and is fixedly installed with a bevel gear (8), and the two bevel gears (8) are meshed with each other.

5. The coating machine capable of double-sided coating according to claim 4, wherein: An inlet (12) is provided on one side of the top of the slurry box (11) far from the coating roller (7). Rectangular grooves (13) are symmetrically provided on both sides of the inner wall of the inlet (12).

6. The coating machine capable of double-sided coating according to claim 5, characterized in that: Anti-slip patterns (21) are provided on the top of the cover plate (20). Rectangular blocks (22) are symmetrically and fixedly installed at both ends of the cover plate (20), and the rectangular blocks (22) have the same shape as the rectangular grooves (13). Rubber gaskets (23) are fixedly installed on the top and bottom of the rectangular blocks (22) respectively.

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