Coating circulating device and coating equipment

Abstract

The utility model provides a coating circulating device and coating equipment, and relates to the technical field of coating equipment, the coating circulating device comprises a first storage barrel, a conveying assembly and a second storage barrel, and the first storage barrel is provided with a first feeding port and a first discharging port; the conveying assembly is provided with a feeding end and a discharging end. The second storage barrel is provided with a second feeding port and a second discharging port, the second feeding port is separated from the discharging end, and a conveying pipe is arranged on the second discharging port and used for being communicated with the coating paint tray so as to convey coating to the coating paint tray. The paint at the discharging end enters the second storage barrel in a falling manner, so that bubbles generated in the second storage barrel and the conveying pipe due to the conveying pressure of the conveying assembly in the second storage barrel and the conveying pipe are avoided, and the bubbles of the paint conveyed to the coating paint tray are reduced; flaws formed on the plate subjected to subsequent coating are reduced, and the quality of the plate subjected to subsequent coating is improved.

Description

Technical Field

[0001] This application relates to the technical field of coating equipment, and in particular, to a paint circulation device and coating equipment. Background Art

[0002] Pre-coated aluminum sheets are widely used in the fields of architectural decoration and electronic appliances. Pre-coated aluminum sheets are formed by evenly coating paint on the surface of the sheet through coating equipment.

[0003] The coating equipment includes a coating paint tray, a coating roller, and a paint circulation device; the coating paint tray is used to hold the paint, the coating paint tray has a feed end and a discharge end, the paint circulation device is respectively connected to the feed end and the discharge end on the coating paint tray, and the paint circulation device will circulate the paint in the coating paint tray while transporting the paint to the coating paint tray to prevent color difference caused by paint precipitation. After the coating roller contacts the paint in the coating paint tray, the paint is coated on the surface of the sheet, thereby coating the surface of the sheet.

[0004] When the existing paint circulation device transports the paint to the coating paint tray, there will be more bubbles in the transported paint. Too many bubbles are often brought onto the sheet by the coating roller, forming defects on the sheet and affecting the quality of the coated sheet. Utility Model Content

[0005] This application provides a paint circulation device and coating equipment to solve the technical problem that the paint transported to the coating paint tray by the existing paint circulation device will generate more bubbles.

[0006] The first aspect of the embodiment of this application provides a paint circulation device, including:

[0007] A first storage bucket for storing the paint and receiving the paint refluxed from the coating paint tray;

[0008] A conveying assembly with a feed end and a discharge end, the feed end is communicated with the first storage bucket, and the conveying assembly is used to transport the paint in the first storage bucket to the discharge end;

[0009] A second storage bucket with a second feed port and a second discharge port, the second feed port corresponds to the discharge end and is separated from the discharge end, so that the paint drops from the discharge end into the second storage bucket, the second discharge port is located below the second feed port, so that the paint in the second storage bucket drops out from the second discharge port, and a conveying pipe is arranged on the second discharge port, and the conveying pipe is used to communicate with the coating paint tray.

[0010] In a possible implementation manner, a first filter screen is arranged on the conveying pipe, and the first filter screen is used to isolate and break the bubbles in the paint in the conveying pipe.

[0011] In a possible implementation, the first storage bucket has a first feed inlet and a first discharge outlet. The conveying assembly includes a first conveying pipe, a second conveying pipe, and a conveying pump. One end of the conveying pump is communicated with the first discharge outlet through the first conveying pipe. The end of the first conveying pipe away from the conveying pump forms the feed end. The second conveying pipe is arranged at the other end of the conveying pump, and the end of the second conveying pipe away from the conveying pump forms the discharge end.

[0012] In a possible implementation, a second filter screen is further included. The second filter screen is arranged on the second conveying pipe and is used for filtering impurities in the paint in the second conveying pipe. Moreover, the aperture of the second filter screen is smaller than that of the first filter screen.

[0013] In a possible implementation, the first feed inlet includes a first sub-inlet and a second sub-inlet. The first sub-inlet is used for adding the paint, and a third filter screen is arranged at the first sub-inlet. The second sub-inlet is communicated with the painting paint tray.

[0014] In a possible implementation, the first storage bucket has a first feed inlet and a first discharge outlet. The first storage bucket includes a first conical barrel body. The open plane end of the first conical barrel body forms the first feed inlet. The first discharge outlet is arranged at the conical bottom tip of the first conical barrel body, and the first feed inlet is located above the first discharge outlet.

[0015] In a possible implementation, the second storage bucket includes a cylindrical barrel body and a second conical barrel body. The cylindrical barrel body is arranged at the open plane end of the second conical barrel body and is communicated with the second conical barrel body. The end of the cylindrical barrel body away from the second conical barrel body forms the second feed inlet. The second discharge outlet is arranged at the conical bottom tip of the second conical barrel body.

[0016] In a possible implementation, the included angle between the side wall of the first conical barrel body and the horizontal plane is 45° - 75°.

[0017] In a possible implementation, a flow regulating valve is arranged on the material conveying pipe, and the flow regulating valve is used for regulating the flow rate of the paint flowing into the painting paint tray.

[0018] A second aspect of the embodiments of the present application provides a painting device, which includes a painting paint tray and also includes the paint circulation device described in any one of the above. The first storage bucket and the material conveying pipe of the paint circulation device are respectively communicated with the painting paint tray.

[0019] A paint circulation device and a painting equipment provided by the present application. The paint circulation device includes a first storage barrel, a conveying assembly, and a second storage barrel. The first storage barrel is used for storing paint and receiving the paint refluxed from the painting paint tray. The conveying assembly has a feeding end and a discharging end. The feeding end is communicated with the first storage barrel, and the conveying assembly is used for conveying the paint in the first storage barrel to the discharging end. The second storage barrel has a second feeding port and a second discharging port. The second feeding port corresponds to the discharging end and is separated from the discharging end, so that the paint drops from the discharging end into the second storage barrel. The second discharging port is located below the second feeding port, so that the paint in the second storage barrel drops out from the second discharging port. A feeding pipe is arranged on the second discharging port and is used for communicating with the painting paint tray. When using the paint circulation device of the present application, during the process of conveying the paint by the conveying assembly, air bubbles will also be generated under the action of the conveying pressure of the conveying assembly, so that there are air bubbles in the paint coming out of the discharging end of the conveying assembly. Since the second feeding port is separated from the discharging end, the conveying pressure of the conveying assembly will not be transmitted to the second storage barrel. The paint at the discharging end enters the second storage barrel in a dropping manner, and the paint in the second storage barrel drops out from the second discharging port to the feeding pipe under the action of gravity, avoiding the generation of air bubbles in the second storage barrel and the feeding pipe due to the conveying pressure of the conveying assembly, thereby reducing the air bubbles in the paint conveyed to the painting paint tray, reducing the defects formed on the subsequent coated plates, and improving the quality of the subsequent coated plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0021] Figure 1 It is a schematic structural diagram of the paint circulation device provided for the embodiments of the present application.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS

[0023] 100 - First storage barrel; 110 - First conical barrel body; 111 - First feeding port; 1111 - First sub - port; 1112 - Second sub - port; 112 - First discharging port; 120 - Support leg;

[0024] 200 - Conveying assembly; 210 - First conveying pipe; 211 - Feeding end, 220 - Second conveying pipe; 221 - Discharging end, 230 - Conveying pump;

[0025] 300 - Second storage barrel; 310 - Cylindrical barrel body; 311 - Second feeding port; 320 - Second conical barrel body; 321 - Second discharging port;

[0026] 400 - Feeding pipe;

[0027] 500-first filter;

[0028] 600-second filter;

[0029] 700-flow regulating valve;

[0030] 800- reflux pipe;

[0031] 900-Third filter.

[0032] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0033] The exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements, unless otherwise indicated. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0034] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] Pre-roller-coated aluminum sheets are widely used in architectural decoration and electronic and electrical fields. Pre-roller-coated aluminum sheets are formed by evenly coating the paint on the surface of the sheet through coating equipment.

[0038] The painting equipment includes a paint tray, a paint roller and a paint circulation device; the paint tray is used to accommodate paint, and has a feed end and a discharge end. The paint circulation device is respectively connected to the feed end and the discharge end of the paint tray. The paint circulation device circulates the paint in the paint tray while conveying paint to the paint tray to prevent the paint from settling and causing color difference. After the paint roller contacts the paint in the paint tray, it applies the paint to the surface of the plate, thereby painting the surface of the plate.

[0039] The existing paint circulation device includes a storage barrel, a circulation pump and a pipeline. The storage barrel is connected to the feed end and the discharge end on the paint tray through the pipeline. The paint in the storage barrel is transported to the paint tray through the pipeline. Driven by the delivery pressure of the circulation pump, the paint will produce a large number of bubbles in the pipeline.

[0040] Because the existing paint circulation device will produce a lot of bubbles in the paint pipe when transporting the paint to the paint tray, the paint transported to the paint tray will have a lot of bubbles. Excessive bubbles will be brought into the plate by the coating roller, causing defects in the plate and affecting the quality of the painted plate.

[0041] In order to solve the technical problem that the paint delivered to the painting tray by the existing paint circulation device will generate more bubbles, the present application provides a paint circulation device and a painting equipment. The paint circulation device includes a first storage bucket, a conveying component, and a second storage bucket. The first storage bucket is used for storing paint and receiving the paint refluxed from the painting tray; the conveying component has a feed end and a discharge end, the feed end is communicated with the first storage bucket, and the conveying component is used for conveying the paint in the first storage bucket to the discharge end; the second storage bucket has a second feed port and a second discharge port, the second feed port corresponds to the discharge end and is separated from the discharge end, so that the paint drops from the discharge end into the second storage bucket, and the second discharge port is located below the second feed port, so that the paint in the second storage bucket drops out from the second discharge port, and a material conveying pipe is arranged on the second discharge port, and the material conveying pipe is used for communicating with the painting tray.

[0042] When using the paint circulation device of the present application, during the process of conveying the paint by the conveying component, bubbles will also be generated in the paint under the action of the conveying pressure of the conveying component, so that the paint coming out of the discharge end of the conveying component has bubbles. Since the second feed port is separated from the discharge end, the conveying pressure of the conveying component will not be transmitted to the second storage bucket. The paint at the discharge end enters the second storage bucket by dropping, and the paint in the second storage bucket drops out from the second discharge port to the material conveying pipe under the action of gravity, avoiding the generation of bubbles in the second storage bucket and the material conveying pipe due to the conveying pressure of the conveying component, thereby reducing the bubbles of the paint conveyed to the painting tray, reducing the defects formed on the subsequent coated board, and improving the quality of the subsequent coated board.

[0043] The following will specifically describe the technical solutions of the application with reference to the accompanying drawings. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0044] In the embodiment of the present application, as shown in Figure 1 the embodiment of the present application provides a paint circulation device, including a first storage bucket 100, a conveying component 200, and a second storage bucket 300.

[0045] The first storage bucket 100 is used for storing paint and receiving the paint refluxed from the painting tray.

[0046] The conveying component 200 has a feed end 211 and a discharge end 221. The feed end 211 is communicated with the first storage bucket 100, and the conveying component 200 is used for conveying the paint in the first storage bucket 100 to the discharge end 221.

[0047] The second storage barrel 300 has a second feed inlet 311 and a second discharge outlet 321. The second feed inlet 311 corresponds to the discharge end 221 and is separated from the discharge end 221, so that the paint drops from the discharge end 221 into the second storage barrel 300. The second discharge outlet 321 is located below the second feed inlet 311, so that the paint in the second storage barrel 300 drops out from the second discharge outlet 321. A material conveying pipe 400 is provided on the second discharge outlet 321, and the material conveying pipe 400 is used to communicate with the painting paint tray.

[0048] In the paint circulation device of the present application, the first storage barrel 100 adds paint into the first storage barrel 100 through the first feed inlet 111, and the adding methods include adding new paint and the paint refluxed from the painting paint tray. Among them, adding new paint can be done manually or automatically by a machine. Among them, the paint can be paint.

[0049] The conveying assembly 200 is used to convey the paint in the first storage barrel 100 from the feed end 211 of the conveying assembly 200 to the discharge end 221 of the conveying assembly 200. The conveying assembly 200 can be a conveying pump 230, compressed gas drive, etc.

[0050] The second feed inlet 311 of the second storage barrel 300 is separated from the discharge end 221, so that the conveying pressure of the conveying assembly 200 will not be transmitted to the second storage barrel 300. The paint coming out of the discharge end 221 drops into the second storage barrel 300 through the second feed inlet 311 by dropping. Because the second discharge outlet 321 is located below the second feed inlet 311, the paint in the second storage barrel 300 will drop into the material conveying pipe 400 under the action of gravity from the second feed inlet 311.

[0051] The paint in the material conveying pipe 400 is conveyed to the painting paint tray under the action of gravity. Because there is no conveying pressure of the conveying assembly 200 in the material conveying pipe 400, the bubbles in the paint conveyed to the painting paint tray are reduced. The paint in the painting paint tray can be conveyed back to the first storage barrel 100 through the first feed inlet 111, so as to realize the circulation of the paint in the painting paint tray and prevent color difference caused by paint precipitation.

[0052] When using the paint circulation device of the present application, in the process of conveying paint through the conveying component 200, bubbles will also be generated in the paint under the action of the conveying pressure of the conveying component 200, so that there are bubbles in the paint coming out of the discharge end 221 of the conveying component 200. Since the second feed port 311 is separated from the discharge end 221, the conveying pressure of the conveying component 200 will not be transmitted to the second storage barrel 300, and the paint at the discharge end 221 enters the second storage barrel 300 by falling. The paint in the second storage barrel 300 falls from the second discharge port 321 to the delivery pipe 400 under the action of gravity, avoiding the generation of bubbles in the second storage barrel 300 and the delivery pipe 400 due to the delivery pressure of the conveying component 200, thereby reducing bubbles in the paint conveyed to the paint tray, reducing defects formed on the subsequently coated plates, and improving the quality of the subsequently coated plates.

[0053] In other embodiments, a first filter screen 500 is provided on the feed pipe 400 , and the first filter screen 500 is used to isolate and eliminate bubbles in the paint in the feed pipe 400 .

[0054] In this embodiment, because the first filter 500 is provided on the feed pipe 400, there is no delivery pressure in the second storage barrel 300 and the feed pipe 400, so that the first filter 500 can isolate and break the bubbles in the paint in the feed pipe 400, and finally the paint with the isolation and bubble breaking is delivered to the paint tray, thereby further reducing the bubbles in the paint delivered to the paint tray, and further reducing the defects formed on the subsequently coated plate.

[0055] Furthermore, the delivery pipe 400 is arranged at an angle, so as to enable the paint to drip quickly from the second storage barrel 300 to the paint tray.

[0056] Preferably, the first filter screen 500 is disposed at an end of the delivery pipe 400 away from the second storage barrel 300 .

[0057] In this embodiment, the first filter 500 isolates and breaks the bubbles in the paint in the entire feed pipe 400 and then directly transports it to the paint tray, avoiding the re-generation of bubbles in the feed pipe 400, thereby isolating and breaking the bubbles to the greatest extent, further reducing the bubbles in the paint transported to the paint tray.

[0058] In another embodiment, the first storage bucket 100 has a first feed inlet 111 and a first discharge outlet 112. The conveying assembly 200 includes a first conveying pipe 210, a second conveying pipe 220, and a conveying pump 230. One end of the conveying pump 230 is communicated with the first discharge outlet 112 through the first conveying pipe 210. The end of the first conveying pipe 210 away from the conveying pump 230 forms a feed end 211. The second conveying pipe 220 is arranged at the other end of the conveying pump 230. The end of the second conveying pipe 220 away from the conveying pump 230 forms a discharge end 221.

[0059] In this embodiment, the paint in the first storage bucket 100 is conveyed into the second storage bucket 300 by the conveying pump 230, and the conveying pump 230 provides driving force for the conveyance of the paint.

[0060] In a certain embodiment, a second filter screen 600 is further included. The second filter screen 600 is arranged on the second conveying pipe 220. The second filter screen 600 is used to filter impurities in the paint in the second conveying pipe 220, and the aperture of the second filter screen 600 is smaller than that of the first filter screen 500.

[0061] In this embodiment, the second filter screen 600 filters impurities in the paint conveyed by the conveying assembly 200. The mesh number of the filter screen can be set to 180 - 250 meshes according to the paint particle size. The function of the first filter screen 500 is to isolate and break bubbles in the paint in the material conveying pipe 400. The aperture of the first filter screen 500 is set to be larger than that of the second filter screen 600, so as to ensure that the paint can pass through the first filter screen 500 at a relatively fast speed, and avoid the paint flowing too slowly from the first filter screen 500, which affects subsequent painting. Specifically, the mesh number of the first filter screen 500 is 20 - 50 meshes.

[0062] In other embodiments, the first feed inlet 111 includes a first sub - inlet 1111 and a second sub - inlet 1112. The first sub - inlet 1111 is used for adding paint, and a third filter screen 900 is arranged at the first sub - inlet 1111. The second sub - inlet 1112 is communicated with the painting paint tray.

[0063] In this embodiment, the newly added paint enters the first storage barrel 100 from the first sub-port 1111, and a third filter 900 is set at the first sub-port 1111. The newly added paint is filtered for impurities through the third filter 900, and the paint flowing back from the paint tray enters the first storage barrel 100 from the second sub-port 1112. No filter is set at the second sub-port 1112, thereby ensuring that the impact force of the paint flowing back from the paint tray is not reduced, so that the paint flowing back from the paint tray has sufficient impact force when entering the first storage barrel 100, so that the paint flowing back from the paint tray forms a vortex effect in the first storage barrel 100, realizing the stirring function of the paint in the first storage barrel 100, making the paint more uniform, and reducing the color difference of subsequent painting.

[0064] Furthermore, a return pipe 800 is included, and the paint tray is connected to the second sub-port 1112 through the return pipe 800.

[0065] In some possible embodiments, the first storage barrel 100 has a first feed port 111 and a first discharge port 112. The first storage barrel 100 includes a first conical barrel body 110. The open plane end of the first conical barrel body 110 forms the first feed port 111. The first discharge port 112 is arranged at the tip of the cone bottom of the first conical barrel body 110, and the first feed port 111 is located above the first discharge port 112.

[0066] In this embodiment, the first material storage barrel 100 is set as a conical barrel, which can effectively reduce the residual material at the bottom of the first material storage barrel 100. The paint entering the first material storage barrel 100 rushes down along the side wall of the first conical barrel body 110, causing a funnel vortex effect in the first conical barrel body 110, thereby realizing the paint stirring function in the first conical barrel body 110.

[0067] Furthermore, the first material storage barrel 100 further includes support legs 120 , which are disposed on the first conical barrel body 110 , and are used to support the first conical barrel body 110 .

[0068] In another possible embodiment, the second storage barrel 300 includes a cylindrical barrel body 310 and a second conical barrel body 320, the cylindrical barrel body 310 is arranged at the open plane end of the second conical barrel body 320, and the cylindrical barrel body 310 is connected to the second conical barrel body 320, and the end of the cylindrical barrel body 310 away from the second conical barrel body 320 forms a second feed port 311, and the second discharge port 321 is arranged at the tip of the cone bottom of the second conical barrel body 320.

[0069] In this embodiment, the cylindrical barrel body 310 converges the paint falling from the discharge end 221. The converged paint is guided along the inner wall of the cylindrical barrel body 310 into the second conical barrel body 320. The second conical barrel body 320 flows into the material conveying pipe 400 from the conical tip at the bottom, avoiding paint residue at the bottom of the second conical barrel body 320.

[0070] In other embodiments, the angle between the side wall of the first conical barrel body 110 and the horizontal plane is 45° - 75°.

[0071] In this embodiment, setting the angle between the side wall of the first conical barrel body 110 and the horizontal plane to 45° - 75° can prevent paint from remaining on the side wall of the first conical barrel body 110, enabling the paint to flow out of the first conical barrel body 110 quickly.

[0072] The angle between the side wall of the first conical barrel body 110 and the horizontal plane can be any angle between 45° and 75°, such as 45°, 50°, 55°, 60°, 65°, 70°, 75°, etc.

[0073] In some embodiments, a flow regulating valve 700 is provided on the material conveying pipe 400. The flow regulating valve 700 is used to regulate the flow rate of the paint flowing into the painting paint tray.

[0074] In this embodiment, the flow rate of the paint flowing into the painting paint tray is regulated by the flow regulating valve 700, so as to input the paint into the painting paint tray according to specific working conditions requirements to meet specific painting needs.

[0075] In a certain embodiment, the first filter screen 500 is arranged at one end of the material conveying pipe 400 away from the second discharge port 321.

[0076] In this embodiment, the first filter screen 500 is arranged at the end of the material conveying pipe 400, so as to isolate and break the air bubbles in the paint in the material conveying pipe 400 to the greatest extent, avoiding the air bubbles generated again in the material conveying pipe 400 from flowing into the painting paint tray.

[0077] Furthermore, the first filter screen 500 is detachably connected to one end of the material conveying pipe 400 away from the second discharge port 321.

[0078] In this embodiment, the first filter screen 500 is convenient to replace by a detachable method.

[0079] Furthermore, the second filter screen 600 is arranged at one end of the second conveying pipe 220 away from the conveying pump 230.

[0080] In this embodiment, disposing the second filter 600 at the end of the second delivery pipe 220 can facilitate replacement and cleaning of the second filter 600 and prevent excessive impurities on the second filter 600 from clogging the entire second delivery pipe 220 .

[0081] A second aspect of an embodiment of the present application provides a painting device, including a paint tray and a paint circulation device of any of the above embodiments, wherein the first storage barrel 100 and the feed pipe 400 of the paint circulation device are respectively connected to the paint tray.

[0082] Since the coating equipment of the embodiment of the present application includes the paint circulation device of the embodiment of the present application, the paint circulation device includes a first storage barrel 100, a conveying assembly 200 and a second storage barrel 300, the first storage barrel 100 is used to store paint and receive paint returned from the paint tray; the conveying assembly 200 has a feed end 211 and a discharge end 221, the feed end 211 is connected to the first storage barrel 100, and the conveying assembly 200 is used to convey the paint in the first storage barrel 100 to the discharge end 221; the second storage barrel 300 has a second feed port 311 and a second discharge port 321. The second feed port 311 corresponds to the discharge end 221, and the second feed port 311 is separated from the discharge end 221 so that the paint falls from the discharge end 221 into the second storage barrel 300. The second discharge port 321 is located below the second feed port 311 so that the paint in the second storage barrel 300 falls out from the second discharge port 321. A delivery pipe 400 is provided on the second discharge port 321, and the delivery pipe 400 is used to communicate with the paint tray.

[0083] When using the coating equipment of the present application, in the process of conveying the paint through the conveying component 200, bubbles will also be generated in the paint under the action of the conveying pressure of the conveying component 200, so that there are bubbles in the paint coming out of the discharge end 221 of the conveying component 200. Since the second feed port 311 is separated from the discharge end 221, the conveying pressure of the conveying component 200 will not be transmitted to the second storage barrel 300, and the paint at the discharge end 221 enters the second storage barrel 300 by falling. The paint in the second storage barrel 300 falls from the second discharge port 321 to the delivery pipe 400 under the action of gravity, avoiding the generation of bubbles in the second storage barrel 300 and the delivery pipe 400 due to the delivery pressure of the conveying component 200, thereby reducing bubbles in the paint conveyed to the paint tray, reducing defects formed on the subsequently coated plates, and improving the quality of the subsequently coated plates.

[0084] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the contents disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0085] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A paint circulation device, characterized in that, Comprising: A first storage bucket (100) for storing paint and receiving the paint refluxed from the painting paint tray; A conveying assembly (200) having a feed end (211) and a discharge end (221), the feed end (211) being in communication with the first storage bucket (100), and the conveying assembly (200) being configured to convey the paint in the first storage bucket (100) to the discharge end (221); A second storage bucket (300) having a second feed port (311) and a second discharge port (321), the second feed port (311) corresponding to the discharge end (221) and being separated from the discharge end (221) such that the paint falls from the discharge end (221) into the second storage bucket (300), the second discharge port (321) being located below the second feed port (311) such that the paint in the second storage bucket (300) falls out from the second discharge port (321), and a material conveying pipe (400) being provided at the second discharge port (321), the material conveying pipe (400) being configured to communicate with the painting paint tray.

2. The paint circulation device according to claim 1, wherein, A first filter screen (500) is provided on the material conveying pipe (400), and the first filter screen (500) is configured to isolate and break the air bubbles in the paint in the material conveying pipe (400).

3. The paint circulation device according to claim 2, characterized in that, The first storage bucket (100) has a first feed port (111) and a first discharge port (112), the conveying assembly (200) includes a first conveying pipe (210), a second conveying pipe (220), and a conveying pump (230), one end of the conveying pump (230) is in communication with the first discharge port (112) through the first conveying pipe (210), the end of the first conveying pipe (210) remote from the conveying pump (230) forms the feed end (211), the second conveying pipe (220) is provided at the other end of the conveying pump (230), and the end of the second conveying pipe (220) remote from the conveying pump (230) forms the discharge end (221).

4. The paint circulation device according to claim 3, wherein It further includes a second filter screen (600), the second filter screen (600) is provided on the second conveying pipe (220), the second filter screen (600) is configured to filter impurities in the paint in the second conveying pipe (220), and the aperture of the second filter screen (600) is smaller than the aperture of the first filter screen (500).

5. The paint circulation device according to claim 3, characterized in that The first feed port (111) includes a first sub-port (1111) and a second sub-port (1112), the first sub-port (1111) is for adding the paint, and a third filter screen (900) is provided at the first sub-port (1111), and the second sub-port (1112) is in communication with the painting paint tray.

6. The coating circulation device according to claim 1, characterized in that, The first storage barrel (100) has a first feed inlet (111) and a first discharge outlet (112). The first storage barrel (100) includes a first conical barrel body (110). The open plane end of the first conical barrel body (110) forms the first feed inlet (111). The first discharge outlet (112) is provided at the conical bottom tip of the first conical barrel body (110), and the first feed inlet (111) is located above the first discharge outlet (112).

7. The paint circulation device according to claim 1, wherein The second storage barrel (300) includes a cylindrical barrel body (310) and a second conical barrel body (320). The cylindrical barrel body (310) is provided at the open plane end of the second conical barrel body (320), and the cylindrical barrel body (310) communicates with the second conical barrel body (320). One end of the cylindrical barrel body (310) away from the second conical barrel body (320) forms the second feed inlet (311). The second discharge outlet (321) is provided at the conical bottom tip of the second conical barrel body (320).

8. The coating circulation device according to claim 6, wherein, The included angle between the side wall of the first conical barrel body (110) and the horizontal plane is 45° to 75°.

9. The paint circulation device according to any one of claims 1 to 8, characterized in that, A flow regulating valve (700) is provided on the material conveying pipe (400). The flow regulating valve (700) is used to regulate the flow rate of the paint flowing into the painting paint tray.

10. A painting device, comprising a painting paint tray, characterized in that, It further includes a paint circulation device according to any one of claims 1 to 9. The first storage barrel (100) and the material conveying pipe (400) of the paint circulation device are respectively communicated with the painting paint tray.

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