Coating device

Abstract

The utility model relates to a coating device. The coating device comprises a rack; the coating mechanism comprises a first mounting seat, a second mounting seat and a coating roller, the first mounting seat and the second mounting seat are arranged in a spaced mode in the first direction, and the coating roller is rotatably connected between the first mounting seat and the second mounting seat and used for coating a base material with pole piece slurry; and the first lifting mechanism and the second lifting mechanism are both mounted on the rack and are in transmission connection with the first mounting base and the second mounting base correspondingly, and under the combined action of the first lifting mechanism and the second lifting mechanism, the first mounting base and the second mounting base drive the coating roller to ascend and descend in the second direction intersecting with the first direction. The height of the coating device can be adjusted.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, specifically to a coating apparatus. Background Technology

[0002] With the development of science and technology, batteries have become mainstream, and their manufacturing is receiving increasing attention. Electrode slurry coating technology is one of the key aspects of battery research and production. In the electrode manufacturing process, electrode slurry is typically applied to the substrate using coating rollers in a coating device. Traditional coating devices lack height adjustment for their coating rollers, failing to meet the needs of different application scenarios and limiting their applicability. Utility Model Content

[0003] Therefore, it is necessary to provide a coating device that can be height-adjusted to address the above problems.

[0004] A coating apparatus, the coating apparatus comprising:

[0005] frame;

[0006] A coating mechanism includes a first mounting base, a second mounting base, and a coating roller. The first mounting base and the second mounting base are spaced apart along a first direction. The coating roller is rotatably connected between the first mounting base and the second mounting base and is used to coat an electrode paste onto a substrate.

[0007] The first lifting mechanism and the second lifting mechanism are both mounted on the frame and are respectively connected to the first mounting base and the second mounting base. Under the combined action of the first lifting mechanism and the second lifting mechanism, the first mounting base and the second mounting base drive the coating roller to rise and fall along a second direction intersecting the first direction.

[0008] In some embodiments, both the first lifting mechanism and the second lifting mechanism include a lifting drive component, a lead screw, and a lead screw nut.

[0009] In either the first lifting mechanism or the second lifting mechanism, the lifting drive component is mounted on the frame and is connected to the lead screw drive. The lead screw nut is sleeved on the lead screw and cooperates with the lead screw. The lead screw nut is fixedly connected to the first mounting base or the second mounting base.

[0010] In some embodiments, the coating apparatus further includes a first guiding mechanism and a second guiding mechanism, wherein the first guiding mechanism is used to guide the first mounting base to move up and down in the second direction, and the second guiding mechanism is used to guide the second mounting base to move up and down in the second direction.

[0011] In some embodiments, both the first guiding mechanism and the second guiding mechanism include a guide rod, a guide slider, and a connecting block;

[0012] In either the first guide mechanism or the second guide mechanism, the guide rod is mounted on the frame and extends along the second direction, the guide slider is slidably mounted on the guide rod, and the connecting block is fixedly connected between the first mounting base and the second mounting base and the guide slider.

[0013] In some embodiments, the frame is provided with a first guide groove and a second guide groove, both of which extend along the second direction. The guide rod and the guide slider of the first guide mechanism are installed in the first guide groove, and the guide rod and the guide slider of the second guide mechanism are installed in the second guide groove.

[0014] In some embodiments, the coating apparatus further includes a correction mechanism disposed on the surface of one of the first mounting base and the second mounting base facing the other, and is used to correct the deviation of the substrate.

[0015] In some embodiments, the correction mechanism includes a telescopic drive, a correction seat, and a correction wheel. The telescopic drive is disposed on the first mounting base or the second mounting base and is pulsatorically connected to the correction seat. The correction wheel is mounted on the correction seat and is rotatable about a rotation axis extending along the second direction or a third direction. The third direction intersects both the first direction and the second direction.

[0016] In some embodiments, the correction mechanism further includes a connector and an elastic element; the connector includes a first segment, an intermediate segment and a second segment, the first segment is fixedly connected to the correction seat, the second segment is connected to the drive shaft of the telescopic drive element, the intermediate segment is connected between the first segment and the second segment, and the elastic element abuts against the intermediate segment and the first segment.

[0017] In some embodiments, the coating apparatus further includes a leakage collection mechanism disposed below the coating roller along the second direction and used to collect electrode slurry that falls onto the coating roller.

[0018] In some embodiments, the leakage collection mechanism includes a leakage plate and a collection element. The leakage plate is spaced apart below the coating roller along the second direction and connected between the first mounting base and the second mounting base. The orthographic projection of the coating roller in the second direction falls completely into the surface of the leakage plate facing the coating roller. The collection element is connected to the side of the leakage plate facing away from the coating roller.

[0019] The surface of the drain plate facing the coating roller includes a flat surface, a first inclined surface, and a second inclined surface. The first inclined surface and the second inclined surface are arranged on opposite sides of the flat surface along directions intersecting the first direction and the second direction, and both the first inclined surface and the second inclined surface are inclined downward in their respective directions pointing towards the flat surface until they are connected to the flat surface. A drain hole is provided on the flat surface, and the drain hole is used to guide the electrode slurry to flow to the liquid collection element.

[0020] In some embodiments, the coating mechanism further includes a coating drive, a drive wheel, a driven wheel, and a timing belt. The coating drive, the drive wheel, the driven wheel, and the timing belt are disposed on the side of one of the first mounting base and the second mounting base facing away from the other. The coating drive is drivenly connected to the drive wheel. The driven wheel is sleeved and fixed on the coating roller. The timing belt is sleeved on the drive wheel and the driven wheel.

[0021] Compared with the prior art, this application has the following beneficial effects:

[0022] In the aforementioned coating apparatus, a first lifting mechanism is mounted on a first column and connected to a first mounting base, while a second lifting mechanism is mounted on a second column and connected to a second mounting base. The first and second lifting mechanisms work together to drive the first and second mounting bases, jointly raising and lowering the coating roller along a second direction. This allows for height adjustment of the coating roller, meeting the needs of different height environments, adapting to various application scenarios, and offering a wide range of applications and high practicality. Furthermore, the cooperation between the first and second lifting mechanisms ensures stable and reliable raising and lowering of the coating roller. Attached Figure Description

[0023] Figure 1 This is a front view of a coating apparatus in one embodiment of this application;

[0024] Figure 2 for Figure 1 The right view of the coating apparatus shown is after removing the first support, the second support, the coating drive, the drive wheel, the driven wheel, and the timing belt.

[0025] Figure 3 for Figure 1 A schematic diagram of the correction mechanism in the coating apparatus shown;

[0026] Figure 4 for Figure 3 The top view of the corrective mechanism shown, after the drive shaft is fitted with the connecting parts, elastic parts and the fourth assembly plate;

[0027] Figure 5 for Figure 1 Right view of the leakage collection mechanism shown.

[0028] Icon labels:

[0029] 100. Coating apparatus;

[0030] 10. Frame; 20. Coating mechanism; 30. First lifting mechanism; 40. Second lifting mechanism; 50. First guiding mechanism; 60. Second guiding mechanism; 70. Correction mechanism; 80. Leakage collection mechanism;

[0031] 11. First support base; 12. Second support base; 13. First column; 14. Second column; 141. Second guide groove; 15. First assembly plate; 16. Conveying channel;

[0032] 21. First mounting base; 22. Second mounting base; 23. Coating roller; 24. Coating drive component; 25. Drive pulley; 26. Driven pulley; 27. Synchronous belt;

[0033] 31. Lifting drive component; 32. Lead screw; 33. Lead screw nut; 34. Second assembly plate;

[0034] 51. Guide rod; 52. Guide slider; 53. Connecting block;

[0035] 71. Telescopic drive component; 711. Drive shaft; 72. Correcting seat; 721. First sub-section; 722. Second sub-section; 723. Middle sub-section; 724. U-shaped groove; 73. Correcting wheel; 74. Connecting component; 741. First section; 742. Second section; 743. Middle section; 75. Elastic component; 76. Third assembly plate; 77. Fourth assembly plate; 78. Rotating shaft;

[0036] 81. Drain plate; 811. Flat surface; 812. Drain hole; 813. First inclined surface; 814. Second inclined surface; 82. Collection component; 821. Collection body; 822. Drawer;

[0037] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0044] Please see Figure 1 This application provides a coating apparatus 100 for coating electrode slurry onto a substrate. The coating apparatus 100 includes a frame 10, a coating mechanism 20, a first lifting mechanism 30, and a second lifting mechanism 40. The coating mechanism 20 includes a first mounting base 21, a second mounting base 22, and a coating roller 23. The first mounting base 21 and the second mounting base 22 are spaced apart along a first direction X. The coating roller 23 is rotatably connected between the first mounting base 21 and the second mounting base 22 and is used to coat the electrode slurry onto the substrate. The first lifting mechanism 30 and the second lifting mechanism 40 are both mounted on the frame 10 and are respectively connected to the first mounting base 21 and the second mounting base 22 via transmission. Under the combined action of the first lifting mechanism 30 and the second lifting mechanism 40, the first mounting base 21 and the second mounting base 22 drive the coating roller 23 to rise and fall along a second direction Y intersecting the first direction X.

[0045] Specifically, the frame 10 includes a first support base 11, a second support base 12, a first column 13, and a second column 14. As an example, the first support base 11 and the second support base 12 are spaced apart along a first direction X, or they are integrally formed; the specific configuration can be determined according to requirements. The first column 13 is mounted on the first support base 11, and the second column 14 is mounted on the second support base 12. The first column 13 and the second column 14 are spaced apart along the first direction X, defining a conveying channel 16 for the substrate to pass through. The conveying channel 16 extends along a third direction Z, intersecting both the first direction X and the second direction Y. The substrate is conveyed along the third direction Z and transferred through the conveying channel 16 to the area above or below the coating roller 23, where it is then coated by the action of the coating roller 23.

[0046] As an example, the first direction X, the second direction Y, and the third direction Z are all perpendicular to each other. Figure 1 Taking the state of the intermediate coating device 100 as an example, the first direction X is the left-right direction, the second direction Y is the up-down direction, and the third direction Z is the front-back direction.

[0047] In some embodiments, the first mounting base 21 and the second mounting base 22 are both located outside the conveying channel 16, and the first column 13 and the first mounting base 21 are arranged along the third direction Z, and the second column 14 and the second mounting base 22 are also arranged along the third direction Z. This design facilitates the layout of the first column 13, the second column 14, the first lifting mechanism 30, the second lifting mechanism 40, the first mounting base 21 and the second mounting base 22, and the lifting of the first mounting base 21 and the second mounting base 22 is less affected by the first column 13, the second column 14, the first lifting mechanism 30 and the second lifting mechanism 40, and the lifting is reliable.

[0048] As an example, the coating roller 23 has a liquid inlet, a receiving cavity and a liquid outlet. The electrode slurry enters through the liquid inlet, passes through the receiving cavity and is output through the liquid outlet and coated onto the substrate.

[0049] In some embodiments, the coating mechanism 20 further includes a coating drive 24, a drive wheel 25, a driven wheel 26, and a timing belt 27. The coating drive 24, drive wheel 25, driven wheel 26, and timing belt 27 are disposed on one side of the first mounting base 21 and the second mounting base 22 facing away from the other. The coating drive 24 is connected to the drive wheel 25 in a transmission manner. The driven wheel 26 is sleeved and fixed on the coating roller 23. The timing belt 27 is sleeved outside the drive wheel 25 and the driven wheel 26.

[0050] The coating drive component 24 can be, but is not limited to, a servo motor, a variable frequency brake motor, etc., and can be selected according to the specific requirements. The coating drive component 24 can be directly mounted on the first mounting base 21 or the second mounting base 22, or the coating drive component 24 can also be mounted on the first mounting base 21 or the second mounting base 22 through the first assembly plate 15.

[0051] In actual operation, the coating drive 24 operates, and its power is transmitted sequentially to the coating roller 23 through the drive wheel 25, the synchronous belt 27, and the driven wheel 26, thereby achieving the rotation of the coating roller 23 and enabling uniform coating on the substrate. The arrangement of the coating drive 24, drive wheel 25, driven wheel 26, and synchronous belt 27 improves the stability and reliability of the power transmission, resulting in better coating effect for the coating device 100. The first lifting mechanism 30 is mounted on the first column 13 and is connected to the first mounting base 21, while the second lifting mechanism 40 is mounted on the second column 14 and connected to the second mounting base 22. The first lifting mechanism 30 and the second lifting mechanism 40 cooperate to drive the first mounting base 21 and the second mounting base 22 to jointly lift the coating roller 23 along the second direction Y, thereby adjusting the height of the coating roller 23 to meet the needs of different height environments, adapt to different usage scenarios, and have a wide range of applications and high practicality. Moreover, the cooperation between the first lifting mechanism 30 and the second lifting mechanism 40 ensures that the lifting of the coating roller 23 is stable and reliable.

[0052] Please refer to it again. Figure 1 And see also Figure 2 In some embodiments, both the first lifting mechanism 30 and the second lifting mechanism 40 include a lifting drive component 31, a lead screw 32, and a lead screw nut 33. In either the first lifting mechanism 30 or the second lifting mechanism 40, the lifting drive component 31 is mounted on the frame 10 and is connected to the lead screw 32 for transmission. The lead screw nut 33 is sleeved on the lead screw 32 and cooperates with it, and is fixedly connected to the first mounting base 21 or the second mounting base 22. The rotational motion of the lead screw 32 is converted into the linear motion of the lead screw nut 33 and the coating roller 23 through transmission using the lead screw 32 and the lead screw nut 33. This transmission method is stable and reliable.

[0053] Optionally, the lifting drive component 31 can be, but is not limited to, a servo motor, a variable frequency brake motor, etc., and can be selected according to the specific requirements.

[0054] Specifically, the first mounting base 21 is directly or indirectly fixedly connected to the lead screw nut 33 of the first lifting mechanism 30, and the second mounting base 22 is directly or indirectly fixedly connected to the lead screw nut 33 of the second lifting mechanism 40. As an example, both the first lifting mechanism 30 and the second lifting mechanism 40 include two second mounting plates 34. In the same first lifting mechanism 30 or second lifting mechanism 40, the two second mounting plates 34 are arranged along the third direction Z on opposite sides of the lead screw nut 33, and are both connected to one of the first mounting base 21 and the second mounting base 22 and the lead screw nut 33, so as to improve the connection stability and reliability between the first lifting mechanism 30 and the first mounting base 21, and between the second lifting mechanism 40 and the second mounting base 22.

[0055] Of course, the structure of the first lifting mechanism 30 and the second lifting mechanism 40 is not limited to the one described above. In some other embodiments, the first lifting mechanism 30 and the second lifting mechanism 40 may each only include a lifting drive component 31, and the lifting drive component 31 is a telescopic cylinder.

[0056] In some embodiments, the coating apparatus 100 further includes a first guide mechanism 50 and a second guide mechanism 60. The first guide mechanism 50 guides the first mounting base 21 to move up and down along the second direction Y, and the second guide mechanism 60 guides the second mounting base 22 to move up and down along the second direction Y. The provision of the first guide mechanism 50 and the second guide mechanism 60 can further improve the stability of the lifting and lowering of the first mounting base 21, the second mounting base 22, and the coating roller 23.

[0057] As an example, there are two sets of first guide mechanisms 50 and two sets of second guide mechanisms 60. The two sets of first guide mechanisms 50 are distributed on opposite sides of the first mounting base 21 along the first direction X and connected to the first mounting base 21. The two sets of second guide mechanisms 60 are distributed on opposite sides of the second mounting base 22 along the first direction X and connected to the second mounting base 22, so as to further improve the sliding stability of the first mounting base 21 and the second mounting base 22.

[0058] In some embodiments, both the first guide mechanism 50 and the second guide mechanism 60 include a guide rod 51, a guide slider 52, and a connecting block 53. In either the first guide mechanism 50 or the second guide mechanism 60, the guide rod 51 is mounted on the frame 10 and extends along the second direction Y, the guide slider 52 is slidably mounted on the guide rod 51, and the connecting block 53 is fixedly connected between one of the first mounting base 21 and the second mounting base 22 and the guide slider 52.

[0059] Specifically, the connecting block 53 of the first guide mechanism 50 is fixedly connected between the first mounting base 21 and the guide slider 52 of the first guide mechanism 50, and the connecting block 53 of the second guide mechanism 60 is fixedly connected between the second mounting base 22 and the guide slider 52 of the second guide mechanism 60. During the lifting and lowering of the first mounting base 21 and the second mounting base 22, the guide rod 51 of the first guide mechanism 50 guides the first mounting base 21 to slide, and the guide rod 51 of the second guide mechanism 60 guides the second mounting base 22 to slide, further improving the stability of the lifting and lowering of the first mounting base 21, the second mounting base 22, and the coating roller 23.

[0060] Of course, the structure of the first guide mechanism 50 and the second guide mechanism 60 is not limited to the one described above. In some other embodiments, the first guide mechanism 50 and the second guide mechanism 60 may each only include the guide rod 51 and the guide slider 52.

[0061] In some embodiments, the frame 10 is provided with a first guide groove and a second guide groove 141, both of which extend along the second direction Y. The guide rod 51 and guide slider 52 of the first guide mechanism 50 are installed in the first guide groove, and the guide rod 51 and guide slider 52 of the second guide mechanism 60 are installed in the second guide groove 141.

[0062] Specifically, the first guide groove is formed on the first column 13, and the second guide groove 141 is formed on the second column 14. The first guide groove is used to accommodate the guide rod 51 and guide slider 52 of the first guide mechanism 50, and the second guide groove 141 is used to accommodate the guide rod 51 and guide slider 52 of the second guide mechanism 60. This allows the guide rod 51 and guide slider 52 of the first guide mechanism 50 and the second guide mechanism 60 to not occupy space, thereby improving the space utilization rate of the coating device 100.

[0063] Please refer to it again. Figure 1 And see also Figure 3 and Figure 4 In some embodiments, the coating apparatus 100 further includes a deviation correction mechanism 70, which is disposed on the surface of one of the first mounting base 21 and the second mounting base 22 facing the other, and is used to correct the deviation of the substrate. Through deviation correction by the deviation correction mechanism 70, during substrate transport, the length direction of the substrate (i.e., the third direction Z) is perpendicular to the axial direction of the coating roller 23 (i.e., the first direction X), ensuring that the substrate does not deviate during transport. Thus, the electrode slurry can be uniformly coated on the substrate under the action of the coating roller 23.

[0064] In some embodiments, the alignment mechanism 70 includes a telescopic drive 71, an alignment seat 72, and an alignment wheel 73. The telescopic drive 71 is disposed on a first mounting base 21 or a second mounting base 22 and is pulsatorically connected to the alignment seat 72. The alignment wheel 73 is mounted on the alignment seat 72 and is rotatable about a rotation axis 78 extending along a second direction Y or a third direction Z. In actual operation, when the width of the substrate changes, the telescopic drive 71 drives the alignment seat 72 to extend or retract the alignment wheel 73, adjusting the position of the alignment wheel 73 in the first direction X to accommodate substrates of different widths, thus broadening its applicability.

[0065] As an example, the correction mechanism 70 can be one or two. If it is one, the correction mechanism 70 is disposed on the surface of one of the first mounting base 21 and the second mounting base 22 facing the other. If it is two, the correction mechanism 70 is disposed on the two opposite surfaces of the first mounting base 21 and the second mounting base 22, and the correction mechanism 70 is disposed at intervals on opposite sides of the substrate along the width direction of the substrate (i.e., the first direction X).

[0066] For ease of explanation, the following embodiments will be described using the example of the correction mechanism 70 being installed on the first mounting base 21.

[0067] The telescopic drive component 71 can be, but is not limited to, a telescopic electric cylinder, a telescopic pneumatic cylinder, etc. As an example, the telescopic drive component 71 can be directly mounted on the first mounting base 21, or the telescopic drive component 71 can also be mounted on the first mounting base 21 via the third mounting plate 76.

[0068] In the same correction mechanism 70, there can be one or more telescopic drive components 71 and correction wheels 73. For example, there can be two telescopic drive components 71 and three correction wheels 73. If there are multiple telescopic drive components 71 and multiple correction wheels 73, the multiple telescopic drive components 71 and multiple correction wheels 73 are all arranged at intervals along the third direction Z.

[0069] The alignment seat 72 can be L-shaped, U-shaped, or other shapes, depending on the requirements. For example, in some embodiments, the alignment seat 72 is a U-shaped seat and includes a first sub-part 721, a second sub-part 722, and a middle sub-part 723. The first sub-part 721 and the second sub-part 722 are spaced apart along the second direction Y. The middle sub-part 723 connects between the first sub-part 721 and the second sub-part 722 and together with the first sub-part 721 and the second sub-part 722, defines a U-shaped groove 724. The alignment wheel 73 is partially located within the U-shaped groove 724 and partially extends out of the U-shaped groove 724 for alignment correction. The alignment wheel 73 is rotatably connected to the alignment seat 72 via a rotating shaft 78 extending along the second direction Y. The axis of the rotating shaft 78 is the axis of rotation around which the alignment wheel 73 rotates. By setting the alignment seat 72 as a U-shaped seat, it is convenient to limit the positioning of the alignment wheel 73, thereby improving the stability of the alignment wheel 73 installation.

[0070] In some embodiments, the correction mechanism 70 further includes a connector 74 and an elastic member 75; the connector 74 includes a first segment 741, a middle segment 743 and a second segment 742, the first segment 741 is fixedly connected to the correction seat 72, the second segment 742 is connected to the drive shaft 711 of the telescopic drive member 71, the middle segment 743 is connected between the first segment 741 and the second segment 742, and the elastic member 75 abuts against the middle segment 743 and the first segment 741.

[0071] As an example, the first segment 741 can be directly connected to the alignment seat 72, or it can be connected to the alignment seat 72 through the fourth mounting plate 77. The middle segment 743 can be set separately from the first segment 741 and the second segment 742, or it can be integrally formed. The second segment 742 is sleeved on the drive shaft 711 of the telescopic drive member 71 and connected to the drive shaft 711 of the telescopic drive member 71.

[0072] As an example, the elastic element 75 can be a compression spring, elastic silicone, or other elastic structure. Taking the elastic element 75 as a compression spring as an example, the compression spring is sleeved outside the middle section 743 and abuts against the middle section 743 and the first section 741.

[0073] The elastic element 75 can improve the shock absorption effect between the correction mechanism 70 and the substrate during the correction process, thus extending the service life of the correction mechanism 70 and reducing damage to the substrate.

[0074] Please see Figure 1 And see also Figure 5 In some embodiments, the coating apparatus 100 further includes a leakage collection mechanism 80, which is disposed below the coating roller 23 along the second direction Y and is used to collect the electrode slurry that falls off the coating roller 23.

[0075] In this embodiment, the substrate is located above the coating roller 23 and is coated under the action of the coating roller 23. The leakage collection mechanism 80 is located below the coating roller 23 and is used to collect the electrode slurry that falls from the coating roller 23, so as to avoid the electrode slurry from contaminating the working environment of the coating device 100 and to keep the working environment clean and tidy.

[0076] In some embodiments, the leakage collection mechanism 80 includes a leakage plate 81 and a collection member 82. The leakage plate 81 is disposed at intervals below the coating roller 23 along the second direction Y and is connected between the first mounting base 21 and the second mounting base 22. The orthogonal projection of the coating roller 23 in the second direction Y falls completely into the surface of the leakage plate 81 facing the coating roller 23. The collection member 82 is connected to the side of the leakage plate 81 facing away from the coating roller 23. The surface of the liquid drain plate 81 facing the coating roller 23 includes a flat surface 811, a first inclined surface 813 and a second inclined surface 814. The first inclined surface 813 and the second inclined surface 814 are arranged on opposite sides of the flat surface 811 along the direction intersecting the first direction X and the second direction Y. The first inclined surface 813 and the second inclined surface 814 are both inclined downward in the direction pointing to the flat surface 811 until they are connected to the flat surface 811. A liquid drain hole 812 is provided on the flat surface 811. The liquid drain hole 812 is used to guide the electrode slurry to flow to the liquid collection member 82.

[0077] In this embodiment, the leakage plate 81 is connected between the first mounting base 21 and the second mounting base 22, and the liquid collection component 82 is connected to the side of the leakage plate 81 facing away from the coating roller 23. Therefore, the leakage collection mechanism 80, the coating mechanism 20, the lifting mechanism and the frame 10 can be connected to form a whole, which is convenient for one-time handling.

[0078] The orthogonal projection of the coating roller 23 in the second direction Y falls completely into the surface of the drain plate 81 facing the coating roller 23. Therefore, the electrode slurry dripping from the coating roller 23 can be received by the drain plate 81 and finally collected into the liquid collection member 82 through the drain hole 812.

[0079] Both the first inclined surface 813 and the second inclined surface 814 are inclined downward in the direction pointing to the flat surface 811 until they are connected to the flat surface 811. Multiple leakage holes 812 are provided on the flat surface 811. All the leakage holes 812 are evenly distributed in the middle area of ​​the flat surface 811. The inclined surface design allows the electrode slurry to slide to the leakage holes 812 of the flat surface 811, and then fall through the leakage holes 812 and be collected in the liquid collection member 82, thereby improving the collection rate of the electrode slurry.

[0080] As an example, the liquid collecting device 82 can be an open box structure, a tray structure, etc., or it can be a pull-out structure. Taking the pull-out structure of the liquid collecting device 82 as an example, the liquid collecting device 82 includes a liquid collecting body 821 and a drawer 822. The liquid collecting body 821 is fixedly connected to the drain plate 81, and the liquid collecting body 821 has a liquid collecting port, a liquid collecting chamber, and a pull-out port. The liquid collecting chamber and the pull-out port are both connected to the liquid collecting chamber. The drawer 822 is slidably inserted through the pull-out port along the third direction Z and is pulled out and installed in the liquid collecting chamber. The electrode slurry dripping from the coating roller 23 enters the drawer 822 through the liquid collecting port. When the drawer 822 is full of electrode slurry, the drawer 822 is pulled out and the electrode slurry is poured into the recycling area for recycling.

[0081] Of course, in some other embodiments, the mechanism of the leakage collection mechanism 80 is not limited to the one described above. It may also include only the liquid collection element 82, which is disposed below the coating roller 23 and connected to the first mounting base 21 and the second mounting base 22.

[0082] The coating apparatus 100 described above has a first lifting mechanism 30 mounted on a first column 13 and connected to a first mounting base 21, and a second lifting mechanism 40 mounted on a second column 14 and connected to a second mounting base 22. The first lifting mechanism 30 and the second lifting mechanism 40 cooperate to drive the first mounting base 21 and the second mounting base 22 together to lift the coating roller 23 along the second direction Y, thereby adjusting the height of the coating roller 23 to meet the needs of different height environments, adapt to different usage scenarios, and have a wide range of applications and high practicality. Furthermore, the cooperation of the first lifting mechanism 30 and the second lifting mechanism 40 ensures stable and reliable lifting of the coating roller 23.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A coating apparatus, characterized in that, The coating apparatus includes: Rack (10); A coating mechanism (20) includes a first mounting base (21), a second mounting base (22), and a coating roller (23). The first mounting base (21) and the second mounting base (22) are spaced apart along a first direction (X). The coating roller (23) is rotatably connected between the first mounting base (21) and the second mounting base (22) and is used to coat an electrode paste onto a substrate. The first lifting mechanism (30) and the second lifting mechanism (40) are both mounted on the frame (10) and are respectively connected to the first mounting base (21) and the second mounting base (22). Under the combined action of the first lifting mechanism (30) and the second lifting mechanism (40), the first mounting base (21) and the second mounting base (22) drive the coating roller (23) to rise and fall along the second direction (Y) intersecting with the first direction (X).

2. The coating apparatus according to claim 1, characterized in that, Both the first lifting mechanism (30) and the second lifting mechanism (40) include a lifting drive component (31), a lead screw (32), and a lead screw nut (33); In either the first lifting mechanism (30) or the second lifting mechanism (40), the lifting drive (31) is mounted on the frame (10) and is connected to the lead screw (32) for transmission. The lead screw nut (33) is sleeved on the lead screw (32) and cooperates with the lead screw (32). The lead screw nut (33) is fixedly connected to the first mounting base (21) or the second mounting base (22).

3. The coating apparatus according to claim 2, characterized in that, The coating apparatus further includes a first guide mechanism (50) and a second guide mechanism (60), the first guide mechanism (50) being used to guide the first mounting base (21) to move up and down along the second direction (Y), and the second guide mechanism (60) being used to guide the second mounting base (22) to move up and down along the second direction (Y).

4. The coating apparatus according to claim 3, characterized in that, Both the first guide mechanism (50) and the second guide mechanism (60) include a guide rod (51), a guide slider (52), and a connecting block (53); In either the first guide mechanism (50) or the second guide mechanism (60), the guide rod (51) is mounted on the frame (10) and extends along the second direction (Y), the guide slider (52) is slidably mounted on the guide rod (51), and the connecting block (53) is fixedly connected between the guide slider (52) and one of the first mounting base (21) or the second mounting base (22).

5. The coating apparatus according to claim 4, characterized in that, The frame (10) is provided with a first guide groove and a second guide groove (141). Both the first guide groove and the second guide groove (141) extend along the second direction (Y). The guide rod (51) and the guide slider (52) of the first guide mechanism (50) are installed in the first guide groove, and the guide rod (51) and the guide slider (52) of the second guide mechanism (60) are installed in the second guide groove (141).

6. The coating apparatus according to claim 1, characterized in that, The coating apparatus further includes a correction mechanism (70), which is disposed on the surface of one of the first mounting base (21) and the second mounting base (22) facing the other, and is used to correct the deviation of the substrate.

7. The coating apparatus according to claim 6, characterized in that, The correction mechanism (70) includes a telescopic drive (71), a correction seat (72), and a correction wheel (73). The telescopic drive (71) is disposed on the first mounting base (21) or the second mounting base (22) and is connected to the correction seat (72) in a transmission manner. The correction wheel (73) is mounted on the correction seat (72) and can rotate about a rotation axis extending along the second direction (Y) or the third direction (Z). The third direction (Z) intersects both the first direction (X) and the second direction (Y).

8. The coating apparatus according to claim 7, characterized in that, The correction mechanism (70) also includes a connector (74) and an elastic element (75); The connector (74) includes a first section (741), an intermediate section (743) and a second section (742). The first section (741) is fixedly connected to the correction seat (72). The second section (742) is connected to the drive shaft (711) of the telescopic drive member (71). The intermediate section (743) is connected between the first section (741) and the second section (742). The elastic member (75) abuts against the intermediate section (743) and the first section (741).

9. The coating apparatus according to claim 1, characterized in that, The coating apparatus further includes a leakage collection mechanism (80), which is disposed below the coating roller (23) along the second direction (Y) and is used to collect the electrode slurry that falls on the coating roller (23).

10. The coating apparatus according to claim 9, characterized in that, The leakage collection mechanism (80) includes a leakage plate (81) and a collection component (82). The leakage plate (81) is spaced below the coating roller (23) along the second direction (Y) and connected between the first mounting base (21) and the second mounting base (22). The orthographic projection of the coating roller (23) in the second direction (Y) falls completely into the surface of the leakage plate (81) facing the coating roller (23). The collection component (82) is connected to the side of the leakage plate (81) facing away from the coating roller (23). The surface of the liquid drain plate (81) facing the coating roller (23) includes a flat surface (811), a first inclined surface (813), and a second inclined surface (814). The first inclined surface (813) and the second inclined surface (814) are arranged on opposite sides of the flat surface (811) along directions intersecting the first direction (X) and the second direction (Y). The first inclined surface (813) and the second inclined surface (814) are both inclined downward in their respective directions pointing towards the flat surface (811) until they are connected to the flat surface (811). A liquid drain hole (812) is provided on the flat surface (811). The liquid drain hole (812) is used to guide the electrode slurry to flow to the liquid collection member (82).

11. The coating apparatus according to claim 1, characterized in that, The coating mechanism (20) further includes a coating drive (24), a drive wheel (25), a driven wheel (26), and a timing belt (27). The coating drive (24), the drive wheel (25), the driven wheel (26), and the timing belt (27) are disposed on one side of the first mounting base (21) and the second mounting base (22) facing away from each other. The coating drive (24) is connected to the drive wheel (25) for transmission. The driven wheel (26) is sleeved and fixed on the coating roller (23). The timing belt (27) is sleeved on the drive wheel (25) and the driven wheel (26).

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