Coating machine

Abstract

The utility model provides a coating machine for reducing the manufacturing difficulty of a patterned coating. The coating machine comprises a supporting device, the supporting device comprises a bearing table and a support, the bearing table is provided with a bearing face, the bearing face is used for bearing a base material to be coated, the supporting device further comprises a first moving device, and the first moving device is used for driving the base material to move in the first direction; the support stretches across the upper portion of the bearing table, and a second moving device is arranged on the support. The coating device comprises a material storage tank, the material storage tank is provided with a containing cavity, the containing cavity is used for containing coating, the material storage tank is further provided with a discharging port communicating with the containing cavity, the material storage tank is arranged on the support, the material storage tank is located above the bearing table, and the discharging port faces the bearing face; the second moving device is used for driving the storage tank to move in the second direction above the bearing table, an included angle exists between the first direction and the second direction, and an included angle also exists between the second direction and the normal of the bearing face.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery production, and in particular to a coating machine. Background Art

[0002] During the production process of lithium batteries, a coating machine is usually required to coat materials with specific functions on a substrate to obtain components of lithium batteries, such as pole pieces or separators. The related technology uses nozzles arranged in an array on the coating machine to spray the coating onto the substrate, and then uses a scraper on the coating machine to flatten the coating. This type of coating machine is usually more suitable for coating the entire surface of the substrate. When it is necessary to make a patterned coating on the surface of the substrate, such as applying a square-shaped coating on the surface of the substrate, it is more difficult to produce using the above-mentioned coating machine. Utility Model Content

[0003] The embodiments of the present application provide a coating machine that can reduce the difficulty of making a patterned coating.

[0004] In a first aspect, an embodiment of the present application provides a coating machine, comprising:

[0005] The supporting device comprises a carrying platform and a bracket, wherein the carrying platform has a carrying surface, and the carrying surface is used to carry the substrate to be coated, and the supporting device also comprises a first moving device, and the first moving device is used to drive the substrate to move in a first direction; the bracket spans above the carrying platform, and the bracket is provided with a second moving device;

[0006] A coating device, wherein the coating device includes a storage tank, the storage tank having a accommodating cavity, the accommodating cavity being used to accommodate coating, the storage tank also being provided with a discharge port connected to the accommodating cavity, the storage tank being arranged on the bracket, the storage tank being located above the supporting platform and the discharge port facing the supporting surface, the second moving device being used to drive the storage tank to move in a second direction above the supporting platform, an angle being formed between the first direction and the second direction, and an angle being formed between the second direction and the normal of the supporting surface.

[0007] In one embodiment, the carrying platform is connected to the first moving device, and the first moving device is used to drive the carrying platform to move in the first direction.

[0008] In one embodiment, the coating device further comprises an extrusion structure, and the extrusion structure is used to extrude the coating in the accommodating cavity out of the storage tank from the discharge port.

[0009] In one embodiment, the extrusion structure includes an air pump disposed outside the storage tank, and the air pump is at least used to increase the air pressure in the accommodating cavity to extrude the coating out of the accommodating cavity.

[0010] In one embodiment, the air pump is located on the supporting platform, the extrusion structure also includes a gas delivery hose, and the storage tank is also provided with a gas port connected to the accommodating cavity, and the air pump is connected to the gas port through the gas delivery hose.

[0011] In one embodiment, the coating device further comprises a stirring structure, wherein the stirring structure is disposed on the material storage tank, and the stirring structure is used to stir the coating in the containing chamber.

[0012] In one embodiment, the stirring structure includes a stirring paddle and a driving member, wherein the driving member is fixed to the storage tank and located outside the accommodating chamber, and the driving member is used to drive the stirring paddle to rotate, and the stirring paddle is located in the accommodating chamber and is used to stir the paint.

[0013] In one embodiment, the storage tank includes a tank body and a discharge pipe that are integrally arranged, the accommodating cavity is formed on the tank body, and the discharge port is located on the free end of the discharge pipe.

[0014] In one embodiment, a mounting seat and a third moving device are also provided on the bracket, the mounting seat is connected to the second moving device, the third moving device is provided on the mounting seat, the storage tank is connected to the third moving device, and the third moving device is used to drive the storage tank to move in a third direction, the third direction is the normal direction of the bearing surface, and the first direction, the second direction and the third direction are perpendicular to each other.

[0015] In one embodiment, the first moving device includes a first servo motor track, the second moving device includes a second servo motor track, the mounting seat is connected to the second servo motor track, and the third moving device includes a third servo motor track.

[0016] Beneficial effects of the embodiments of the present application:

[0017] In an embodiment of the present application, the coating machine includes a supporting device and a coating device, wherein the coating device includes a storage tank, the storage tank is used to load the coating; the supporting device includes a bearing platform and a bracket, wherein the bearing platform has a bearing surface, and the bearing surface is used to carry the substrate to be coated. A first moving device is also provided on the supporting device, and the first moving device can be used to drive the substrate to move in a first direction, and a second moving device is provided on the bracket. The storage tank is provided on the bracket and is located above the bearing platform, and the second moving device can be used to drive the storage tank to move in a second direction above the bearing platform, wherein there is an angle between the first direction and the second direction, and there is also an angle between the second direction and the normal of the bearing surface. A discharge port is provided on the storage tank, and the discharge port faces the bearing surface, so that the coating can be discharged from the storage tank through the discharge port and applied to the substrate of the bearing platform to form a coating. In this process, the first moving device moves the substrate and the second moving device drives the storage tank to move, so that a coating coated along a specific trajectory can be formed on the substrate, that is, the production of a patterned coating is realized, and the production difficulty is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 is a schematic diagram of the main structure of a coating machine provided in an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a top view of a coating machine provided in an embodiment of the present application;

[0021] Figure 3 is a schematic cross-sectional structure diagram of a material storage tank in a coating machine provided in an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of the structure of the coating sample provided in the embodiment of the present application;

[0023] Figure 5 The coating machine provided in the embodiment of the present application is manufactured Figure 4 Schematic diagram of the coating path for the coated sample.

[0024] Description of reference numerals:

[0025] 1. Substrate; 2. Coating;

[0026] 100. Coating machine

[0027] 10. Support device;

[0028] 11. bearing platform; 111. bearing surface;

[0029] 12. bracket; 121. second moving device; 122. mounting base; 123. third moving device;

[0030] 13. A first mobile device;

[0031] 20. Coating device;

[0032] 21, storage tank; 211, tank body; 212, discharge pipe; 21a, accommodating chamber; 21b, discharge port; 21c, air outlet;

[0033] 22. extrusion structure; 221. air pump; 222. gas delivery hose;

[0034] 23. stirring structure; 231. stirring paddle; 232. driving member; 233. rotating shaft. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0036] In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The terms "comprises," "includes," or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0040] In the description of the embodiments of the present application, words such as "example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "example" or "for example" in the embodiments of the present application is not to be interpreted as being more preferred or having more advantages than another embodiment or design. The use of words such as "example" or "for example" is intended to present relative concepts in a clear manner.

[0041] The present application provides a coating machine, comprising:

[0042] The supporting device comprises a carrying platform and a bracket, wherein the carrying platform has a carrying surface, the carrying surface is used to carry the substrate to be coated, and the supporting device also comprises a first moving device, the first moving device is used to drive the substrate to move in a first direction; the bracket spans above the carrying platform, and the bracket is provided with a second moving device;

[0043] The coating device includes a storage tank, the storage tank has a accommodating cavity, the accommodating cavity is used to accommodate the coating, and the storage tank is also provided with a discharge port connected to the accommodating cavity. The storage tank is arranged on a bracket, the storage tank is located above the supporting platform and the discharge port faces the supporting surface, and the second moving device is used to drive the storage tank to move above the supporting platform along a second direction, wherein there is an angle between the first direction and the second direction, and there is also an angle between the second direction and the normal of the supporting surface.

[0044] The coating machine provided in the embodiment of the present application includes a supporting device and a coating device, wherein the coating device includes a storage tank, and the storage tank is used to load the coating; the supporting device includes a bearing platform and a bracket, wherein the bearing platform has a bearing surface, and the bearing surface is used to bear the substrate to be coated. A first moving device is also provided on the supporting device, and the first moving device can be used to drive the substrate to move in the first direction, and a second moving device is provided on the bracket. The storage tank is provided on the bracket and is located above the bearing platform, and the second moving device can be used to drive the storage tank to move in the second direction above the bearing platform, wherein there is an angle between the first direction and the second direction, and there is also an angle between the second direction and the normal of the bearing surface. A discharge port is provided on the storage tank, and the discharge port faces the bearing surface, so that the coating can be discharged from the storage tank through the discharge port and applied to the substrate of the bearing platform to form a coating. In this process, the first moving device moves the substrate and the second moving device drives the storage tank to move, so that a coating coated along a specific trajectory can be formed on the substrate, that is, the production of a patterned coating is realized, and the production difficulty is relatively low.

[0045] Specifically, see Figures 1 to 3 , an embodiment of the present application provides a coating machine 100, which is used to apply a coating on a substrate 1. The coating here can be a dry material or a wet material, such as a slurry. The substrate 1 includes but is not limited to at least one of a plate material, a sheet material, a film material and a foil material. As an example, the coating machine 100 is used to prepare an electrode for a lithium battery, wherein the substrate 1 is a current collector and the coating is an electrode slurry. As an example, the coating machine 100 is used to prepare an isolation membrane for a lithium battery, wherein the substrate 1 is a base membrane for making an isolation membrane, and the coating is a coating slurry for the isolation membrane.

[0046] In detail, the coating machine 100 includes a supporting device 10 and a coating device 20, wherein the supporting device 10 is used to carry the substrate 1 to be coated, and the coating device 20 is used to coat the coating on the substrate 1. The coating device 20 is arranged on the supporting device 10, that is, the supporting device 10 is also used to support the coating device 20.

[0047] The supporting device 10 includes a carrying platform 11 and a bracket 12. The carrying platform 11 has a carrying surface 111, and the carrying surface 111 is used to carry the substrate 1 to be coated. The bracket 12 is used to support the coating device 20, that is, the coating device 20 is arranged on the bracket 12, and the coating device 20 can be arranged on the bracket 12 as a whole or partially. Figure 1When the coating machine 100 is normally placed on the ground, the bracket 12 spans above the carrier platform 11, that is, the two ends of the bracket 12 extend to the two sides of the carrier platform 11, and the middle section of the bracket 12 corresponds to the carrier platform 11 and is spaced apart from the carrier platform 11, specifically, the middle section is located above the carrier platform 11. As an example, the bracket 12 includes two vertical poles erected at intervals on both sides of the carrier platform 11 and a cross bar located above the carrier platform 11, and the two ends of the cross bar are respectively connected to the two vertical poles. The carrier platform 11 and the bracket 12 can be directly connected, indirectly connected, or even separated from each other.

[0048] The coating device 20 includes a storage tank 21, which has a accommodating chamber 21a, and the accommodating chamber 21a is used to accommodate the coating. A discharge port 21b is also provided on the storage tank 21, and the discharge port 21b is connected to the accommodating chamber 21a, and the coating in the accommodating chamber 21a can flow out of the accommodating chamber 21a through the discharge port 21b. The storage tank 21 is arranged on the bracket 12, so that the storage tank 21 is also located above the bearing platform 11. When the storage tank 21 is arranged on the bracket 12, the storage tank 21 corresponds to the bearing platform 11, and the discharge port 21b faces the bearing surface 111, so that the discharge port 21b faces the substrate on the bearing platform 11, so that the coating can be applied to the substrate 1 through the discharge port 21b to form a coating. As an example, the storage tank 21 extends in the direction of gravity, and the discharge port 21b is located at one end of the storage tank 21 close to the ground. When the discharge port 21b is opened, the coating can flow out of the accommodating chamber 21a by gravity.

[0049] In more detail, the support device 10 further includes a first moving device 13, and the first moving device 13 is used to drive the substrate 1 to move in the first direction. The movement of the substrate 1 in the first direction may be a unidirectional movement or a reciprocating movement of the substrate 1 in the first direction. As an example, see Figure 2 , the first direction refers to the Y direction.

[0050] In some embodiments, the carrier 11 is connected to a first moving device 13, and the first moving device 13 is used to drive the carrier 11 to move in a first direction, thereby indirectly driving the substrate 1 to move in the first direction. Exemplarily, the first moving device 13 includes a first servo motor track, the carrier 11 is connected to the first servo motor track, and the first servo motor track drives the carrier 11 to move to drive the substrate 1 to move.

[0051] In some embodiments, the carrier 11 is fixed, and the first moving device 13 directly drives the substrate 1 to move in the first direction. Exemplarily, the first moving device 13 includes a rotating roller, and the substrate 1 is carried on the carrier 11 and the rotating roller, and when the rotating roller rotates, the substrate 1 can be pulled to move in the first direction.

[0052] The bracket 12 is provided with a second moving device 121, which is used to drive the storage tank 21 to move in the second direction. Since the storage tank 21 is located above the bearing platform 11, the storage tank 21 moves in the second direction above the bearing platform 11. Here, there is an angle between the second direction and the first direction, that is, the second direction is not parallel to the first direction; and there is also an angle between the second direction and the normal of the bearing surface 111, that is, the second direction is not parallel to the normal direction of the bearing surface 111. Optionally, the size of the angle between the second direction and the first direction is 60° to 90°, such as 60°, 70°, 80° or 90°. Optionally, the size of the angle between the second direction and the normal of the bearing surface 111 is 60° to 90°, such as 60°, 70°, 80° or 90°. Exemplarily, the first direction is the longitudinal direction of the bearing surface 111, and the second direction is the horizontal direction of the bearing surface 111. The movement of the storage tank 21 in the second direction may be a unidirectional movement or a reciprocating movement of the storage tank 21 in the second direction. Figure 1 , the second direction refers to the X direction. Optionally, the second moving device 121 includes a second servo motor track, and the bracket 12 is further provided with a mounting seat 122, the storage tank 21 is directly mounted on the mounting seat 122, the mounting seat 122 is connected to the second servo motor track, and the second servo motor track drives the storage tank 21 to move by driving the mounting seat 122 to move.

[0053] When using the coating machine 100, the substrate 1 to be coated is placed on the supporting surface 111 of the supporting platform 11, the coating is placed in the accommodating cavity 21a of the storage tank 21, and the discharge port 21b of the storage tank 21 is kept open. The coating in the accommodating cavity 21a can flow out of the storage tank 21 through the discharge port 21b and be coated on the substrate 1 below. The first moving device 13 is synchronously controlled to drive the substrate 1 to move in a first direction and the second moving device 121 is controlled to drive the storage tank 21 to move in a second direction. In this way, a coating coated along a specific trajectory can be formed on the substrate 1, that is, the production of a patterned coating is realized, and the production difficulty is relatively low.

[0054] As an example, see Figure 4 , a square-shaped coating 2 is made on the surface of the substrate 1. The specific preparation method can be: see Figure 5, place the substrate 1 on the supporting platform 11, the discharge port 21b of the storage tank 21 corresponds to point a on the substrate 1, keep the discharge port 21b unobstructed, and then use the second moving device 121 to drive the storage tank 21 to move along the X direction (i.e., the horizontal direction of the supporting platform 11) to the discharge port 21b of the storage tank 21 corresponding to point b on the substrate 1, the storage tank 21 stops moving, and use the first moving device 13 to drive the substrate 1 to move along the Y direction (i.e., the longitudinal direction of the supporting platform 11) to the discharge port 21b of the storage tank 21 corresponding to point c on the substrate 1, the substrate 1 stops moving, and then use the second moving device 121 to drive the storage tank 21 to move in the opposite direction of the X direction to the discharge port 21b of the storage tank 21 corresponding to point d on the substrate 1, the storage tank 21 stops moving, and then use the first moving device 13 to drive the substrate 1 to move in the opposite direction of the Y direction to the discharge port 21b of the storage tank 21 corresponding to point a on the substrate 1, that is, the production of a square-shaped coating 2 is completed. Referring to the above method, the first mobile device 13 and the second mobile device 121 are controlled to achieve Figure 5 The dotted line shown in FIG. 2 is applied to coat 2, and finally the Figure 4 Coated samples shown in .

[0055] When the coating is made using the above-mentioned coating machine 100, a long strip of coating can be obtained. Even without using a scraper, the continuity of the coating can be ensured. The first moving device 13 and the second moving device 121 are used to respectively drive the substrate 1 and the storage tank 21 to move, so that each long strip of coating is connected.

[0056] In addition, the coating machine 100 provided in the embodiment of the present application has a discharge port 21b located on the storage tank 21 and connected to the accommodating cavity 21a, which can greatly shorten the flow path of the coating out of the storage tank 21, especially when the coating contains a binder, thereby reducing the risk of the coating solidifying before being applied to the substrate 1.

[0057] In some embodiments, see Figure 3The storage tank 21 includes an integrally arranged tank body 211 and a discharge pipe 212, wherein the accommodating cavity 21a is formed on the tank body 211, and the discharge port 21b is located at the free end of the discharge pipe 212, and the free end of the discharge pipe 212 refers to the end of the discharge pipe 212 away from the tank body 211. By configuring the storage tank 21 to include the tank body 211 and the discharge pipe 212, the discharge pipe 212 can be used to gather the coating and increase the flow rate of the coating out of the storage tank 21, thereby ultimately improving the coating effect. Usually, the discharge pipe 212 is located below the tank body 211, that is, the discharge pipe 212 is closer to the carrier 11 than the tank body 211. Optionally, the number of the discharge pipe 212 is one, and the number of the discharge port 21b on the discharge pipe 212 is also one. Exemplarily, the diameter of the discharge port 21b is 0.1 mm to 100 mm, for example, 0.1 mm, 1 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm or 100 mm.

[0058] In some embodiments, see Figure 1 and Figure 2 , the bracket 12 is also provided with a mounting seat 122 and a third moving device 123, the mounting seat 122 is connected to the second moving device 121, the third moving device 123 is arranged on the mounting seat 122, the storage tank 21 is connected to the third moving device 123, and the third moving device 123 is used to drive the storage tank 21 to move, specifically to move in the third direction. Here, the third direction is the normal direction of the bearing surface 111, and the movement of the storage tank 21 in the third direction can be a unidirectional movement or a reciprocating movement of the storage tank 21 in the third direction. When the storage tank 21 moves in the third direction, the storage tank 21 will approach or move away from the bearing surface 111 of the bearing platform 11, that is, the storage tank 21 performs a lifting movement relative to the bearing platform 11. By setting the third moving device 123 to drive the storage tank 21 to rise and fall relative to the bearing platform 11, the coating machine 100 can adapt to the preparation of coatings of different thicknesses, or substrates 1 of different thicknesses. When the thickness of the prepared coating is relatively large and / or the thickness of the substrate 1 is relatively large, the storage tank 21 can be appropriately controlled to be farther away from the support platform 11. When the thickness of the prepared coating is relatively small and / or the thickness of the substrate 1 is relatively small, the storage tank 21 can be appropriately controlled to be closer to the support platform 11. When using the coating machine 100 to prepare the coating, the thickness of the coating can be adjusted by regulating the moving speed of the substrate 1 and the storage tank 21, and / or the flow rate of the coating out of the storage tank 21. Generally, the slower the moving speed of the substrate 1 and the storage tank 21, the greater the flow rate of the coating out of the storage tank 21, and the thicker the coating, and vice versa. As an example, see Figure 1, the third direction refers to the Z direction. Optionally, the first direction, the second direction and the third direction are perpendicular to each other. Optionally, the third moving device 123 includes a third servo motor track, the third servo motor track is arranged on the mounting seat 122, the storage tank 21 is connected to the third servo motor track, and the third servo motor track drives the storage tank 21 to move.

[0059] In some embodiments, the paint flows out of the accommodating chamber 21a through the discharge port 21b by gravity. In one embodiment, a first control valve (not shown) is provided on the storage tank 21, and the first control valve is used to control the on-off of the discharge port 21b. When the paint needs to be released, the first control valve is controlled to open the discharge port 21b, and when the paint does not need to be released, the first control valve is controlled to close the discharge port 21b. In one embodiment, the storage tank 21 is also provided with an air inlet (not shown in the figure), and external gas can enter the accommodating chamber 21a through the air inlet. The storage tank 21 is provided with a second control valve (not shown in the figure), and the second control valve is used to control the opening and closing of the air inlet; when the air inlet is opened, external gas can enter the accommodating chamber 21a through the air inlet, and the paint in the accommodating chamber 21a can flow out of the accommodating chamber 21a through the discharge port 21b; when the air inlet is closed, external gas cannot enter the accommodating chamber 21a through the air inlet, and the paint in the accommodating chamber 21a cannot flow out of the accommodating chamber 21a through the discharge port 21b.

[0060] In some embodiments, see Figure 1 and Figure 2 The coating device 20 further includes an extrusion structure 22, which is used to extrude the coating in the accommodating cavity 21a from the discharge port 21b out of the storage tank 21. Compared with using gravity to make the coating flow out of the storage tank 21, the speed of the coating flowing out of the storage tank 21 can be accelerated by setting the extrusion structure 22, and the speed of the coating flowing out of the storage tank 21 can also be controlled by controlling the extrusion force.

[0061] In some embodiments, the extrusion structure 22 is a piston mechanism (not shown), which includes a piston and a push rod motor. The piston is located in the storage tank 21 and has an interference fit with the inner wall of the storage tank 21. The push rod motor is connected to the piston to drive the piston to move.

[0062] In some embodiments, the extrusion structure 22 is an increasing mechanism, which increases the gas pressure in the accommodating chamber 21a by blowing air into the accommodating chamber 21a. Under the action of the air pressure, the paint in the accommodating chamber 21a is squeezed out of the storage tank 21. Specifically, the increasing mechanism includes an air pump 221, which is at least used to blow air into the accommodating chamber 21a so that the air pressure in the accommodating chamber 21a increases, thereby squeezing the paint out of the accommodating chamber 21a. Optionally, the air pressure in the accommodating chamber 21a is controlled to be 0.01Mpa-0.8Mpa. The speed at which the paint is discharged from the accommodating chamber 21a can be controlled by controlling the size of the internal pressure of the accommodating chamber 21a. Usually, the air pump 221 is arranged outside the storage tank 21, and the air pump 221 can be arranged on the storage tank 21, or it can be arranged on the support device 10, that is, the air pump 221 is separated from the storage tank 21. In some cases, the air pump 221 can also evacuate the accommodating chamber 21a to reduce the air pressure in the accommodating chamber 21a. In this way, the negative pressure in the accommodating chamber 21a can be used to suck the paint into the accommodating chamber 21a through the discharge port 21b to achieve feeding, especially when the paint is a wet material. In other cases, the storage tank 21 is provided with a feed port (not shown) independent of the discharge port 21b, and the diameter of the feed port is much larger than the diameter of the discharge port 21b. When feeding is required, the feed port is opened, and the paint can be added to the accommodating chamber 21a through the feed port. At other times, the feed port is kept closed to ensure the sealing of the accommodating chamber 21a. In this way, when the air pump 221 stops working in the accommodating chamber 21a, the paint can also stop flowing out of the accommodating chamber 21a under the action of air pressure, so that there is no need to set another valve to control the flow of the paint.

[0063] In some embodiments, see Figure 1 , the air pump 221 is located on the carrier 11, the extrusion structure 22 also includes a gas delivery hose 222, and the storage tank 21 is also provided with a gas port 21c connected to the accommodating chamber 21a, and the air pump 221 is connected to the gas port 21c through the gas delivery hose 222. Providing that the air pump 221 is arranged on the carrier 11 can reduce the burden of the bracket 12, and the gas delivery hose 222 is used to connect the air pump 221 and the accommodating chamber 21a, so as to ensure that the air pump 221 can inflate the accommodating chamber 21a while avoiding the rigid connection between the air pump 221 and the storage tank 21, thereby reducing the adverse effect on the lifting and lowering of the storage tank 21. Optionally, the gas delivery hose 222 is a silicone tube or a rubber tube. The gas port 21c is opened on the side wall of the storage tank 21 and is close to the end of the storage tank 21 away from the discharge port 21b.

[0064] In some embodiments, see Figures 1 to 3The coating device 20 further includes a stirring structure 23, which is disposed on the storage tank 21 and is used to stir the coating in the receiving chamber 21a. When the coating is a solid-liquid mixture, solid particles in the coating are prone to sedimentation, causing the solid particles to be discharged first, resulting in poor uniformity of the coating. By arranging the stirring structure 23 on the storage tank 21 to stir the coating in the receiving chamber 21a, the uniformity of the coating is ensured, thereby improving the uniformity of the coating.

[0065] In some embodiments, the stirring structure 23 is an ultrasonic device (not shown), which is disposed on the storage tank 21 and outside the storage tank 21. The ultrasonic device can generate ultrasonic waves, and use ultrasonic waves to stir the paint in the storage tank 21 to improve the uniformity of the paint.

[0066] In some embodiments, see Figure 3 , the stirring structure 23 is a mechanical stirring device. Specifically, the mechanical stirring device includes a stirring paddle 231 and a driving member 232, wherein the driving member 232 is fixed on the storage tank 21 and is located outside the accommodating chamber 21a, and the driving member 232 is used to drive the stirring paddle 231 to rotate, and the stirring paddle 231 is located in the accommodating chamber 21a and is used to stir the coating. Optionally, the stirring paddle 231 is arranged close to the bottom wall of the accommodating chamber 21a. Optionally, the driving member 232 is a motor. Optionally, the motor is provided with an output shaft, and the stirring paddle 231 is fixed on the output shaft of the motor.

[0067] In some embodiments, the mechanical stirring device includes a rotating shaft 233, one end of the rotating shaft 233 is connected to the driving member 232, and the other end of the rotating shaft 233 is connected to the stirring paddle 231. By setting the rotating shaft 233, transmission is achieved, and at the same time, it can also be ensured that the stirring paddle 231 can be better extended into the paint to stir the paint. Optionally, the rotating shaft 233 is retractable or liftable to adjust the position of the stirring paddle 231 in the accommodating chamber 21a. When there is more paint in the accommodating chamber 21a, the stirring paddle 231 can be lifted so that the stirring paddle 231 is farther away from the bottom wall of the accommodating chamber 21a; when there is less paint in the accommodating chamber 21a, the stirring paddle 231 can be lowered so that the stirring paddle 231 is closer to the bottom wall of the accommodating chamber 21a to achieve stirring of the paint.

[0068] In some embodiments, the storage tank 21 is a metal tank, such as a stainless steel metal tank.

[0069] In some embodiments, the coating machine 100 further includes a controller (not shown), which is electrically connected to the supporting device 10 and the coating device 20. In this way, the coating machine 100 can be pre-programmed to automatically run the entire coating process.

[0070] In some embodiments, the carrier 11 is provided with an adsorption through hole (not shown), and the coating machine 100 further includes a suction device (not shown), which is used to evacuate the adsorption through hole, so that when the substrate 1 is laid flat on the carrier 11, the substrate 1 can be adsorbed on the carrier 11 to ensure the stability of the substrate 1, and the substrate 1 can be moved arbitrarily relative to the carrier 11 during the coating process. Of course, when the substrate 1 needs to move relative to the carrier 11, the suction device can be controlled to stop suctioning the adsorption through hole. Optionally, the suction device includes an air pump.

[0071] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A coating machine, characterized in that: include: The supporting device comprises a carrying platform and a bracket, wherein the carrying platform has a carrying surface, and the carrying surface is used to carry the substrate to be coated, and the supporting device also comprises a first moving device, and the first moving device is used to drive the substrate to move in a first direction; the bracket spans above the carrying platform, and the bracket is provided with a second moving device; A coating device, wherein the coating device includes a storage tank, the storage tank having a accommodating cavity, the accommodating cavity is used to accommodate coating, the storage tank is also provided with a discharge port connected to the accommodating cavity, the storage tank is arranged on the bracket, the storage tank is located above the supporting platform and the discharge port faces the supporting surface, and the second moving device is used to drive the storage tank to move above the supporting platform along a second direction; wherein, there is an angle between the first direction and the second direction, and there is also an angle between the second direction and the normal of the supporting surface.

2. The coating machine according to claim 1, characterized in that: The carrying platform is connected to the first moving device, and the first moving device is used to drive the carrying platform to move in the first direction.

3. The coating machine according to claim 1, characterized in that: The coating device further comprises an extrusion structure, and the extrusion structure is used to extrude the coating in the accommodating cavity out of the storage tank from the discharge port.

4. The coating machine according to claim 3, characterized in that: The extrusion structure includes an air pump arranged outside the storage tank, and the air pump is at least used to increase the air pressure in the accommodating cavity to extrude the coating out of the accommodating cavity.

5. The coating machine according to claim 4, characterized in that: The air pump is located on the supporting platform, the extrusion structure also includes a gas delivery hose, and the storage tank is also provided with a gas port connected to the accommodating cavity, and the air pump is connected to the gas port through the gas delivery hose.

6. The coating machine according to claim 1, characterized in that: The coating device further comprises a stirring structure, which is arranged on the material storage tank and is used for stirring the coating in the containing cavity.

7. The coating machine according to claim 6, characterized in that: The stirring structure includes a stirring paddle and a driving member, wherein the driving member is fixed on the storage tank and located outside the accommodating chamber, and the driving member is used to drive the stirring paddle to rotate, and the stirring paddle is located in the accommodating chamber and is used to stir the coating.

8. The coating machine according to claim 1, characterized in that: The material storage tank comprises a tank body and a discharge pipe which are integrally arranged, the accommodating cavity is formed on the tank body, and the discharge port is located on the free end of the discharge pipe.

9. The coating machine according to claim 1, characterized in that: The bracket is also provided with a mounting seat and a third moving device, the mounting seat is connected to the second moving device, the third moving device is arranged on the mounting seat, the storage tank is connected to the third moving device, and the third moving device is used to drive the storage tank to move in a third direction, the third direction is the normal direction of the bearing surface, and the first direction, the second direction and the third direction are perpendicular to each other.

10. The coating machine according to claim 9, characterized in that: The first moving device includes a first servo motor track, the second moving device includes a second servo motor track, the mounting seat is connected to the second servo motor track, and the third moving device includes a third servo motor track.

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