An aluminum coil coating apparatus

Abstract

This utility model discloses an aluminum coil roller coating device, comprising: a support frame with multiple conveying rollers rotatably connected to its inner wall; a coating unit including a paint box fixedly connected to the inner wall of the support frame; the coating unit further including a coating assembly for coating the aluminum coil; and a feeding unit disposed within the support frame, the feeding unit including a liquid delivery section and a flow-retarding section disposed within the paint box. The liquid delivery section is used to deliver paint into the paint box, and the flow-retarding section is used to reduce liquid surface sloshing caused when adding paint. When the liquid delivery section delivers liquid paint into the paint box, the flow-retarding section reduces the sloshing caused by liquid flow, allowing the coating assembly to fully and evenly acquire paint in a relatively stable liquid surface and uniformly roll-coat the paint onto the surface of the aluminum coil, thereby reducing coating thickness fluctuations on the aluminum coil surface.

Description

Technical Field

[0001] This utility model relates to the field of roller coating equipment technology, and in particular to an aluminum coil roller coating equipment. Background Technology

[0002] Aluminum coils are made from pure aluminum or aluminum alloys. They are typically produced by heating and melting aluminum ingots, rolling them multiple times with rolling equipment to gradually roll them into aluminum sheets of the required thickness, and then rolling the sheets into coils using coiling equipment. During the rolling process, some heat treatment and surface treatment processes may also be carried out to improve the performance and quality of the aluminum coils.

[0003] A coating is applied to the surface of aluminum coils using a roller coating machine to improve corrosion resistance and durability. Roller coating machines typically have a coating tank for storing the coating. The coating rollers are partially immersed in the coating tank. As the coating rollers rotate, a layer of coating adheres to their surface. Multiple sets of coating rollers then evenly transfer the coating to the surface of the aluminum coil. The coating tank is usually filled with coating through a coating tube. However, during the filling process, the impact of the liquid causes it to slosh. This sloshing results in inconsistent amounts of coating picked up by the coating rollers each time, leading to fluctuations in the coating thickness on the aluminum coil surface and affecting the consistency of the product's appearance quality. Therefore, an aluminum coil roller coating device is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the current aluminum coil coating device, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide an aluminum coil roller coating device, which is suitable for solving the problem that when adding paint to the paint tank of the roller coating machine, the liquid in the paint tank will shake due to the impact force of the liquid. The shaking of the liquid surface will cause the coating roller to pick up inconsistent amounts of paint each time, which will lead to fluctuations in the coating thickness on the surface of the aluminum coil and affect the consistency of the product appearance quality.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an aluminum coil roller coating device, comprising:

[0008] A support frame, wherein multiple conveying rollers are rotatably connected to the inner wall of the support frame;

[0009] The coating unit includes a paint box fixedly connected to the inner wall of a support frame, and the coating unit also includes a coating assembly for coating aluminum coils;

[0010] A feeding unit is installed inside a support frame. The feeding unit includes a liquid delivery section and a slow-flow section installed inside a paint box. The liquid delivery section is used to deliver paint into the paint box, and the slow-flow section is used to reduce the sloshing of the liquid surface when adding paint.

[0011] A cleaning unit, located within a support frame, is used to pre-clean the surface of the aluminum coil.

[0012] In a preferred embodiment of the aluminum coil roller coating device of this utility model, the coating assembly includes a material taking roller, a coating roller, and a support roller that are rotatably connected to the inner wall of a support frame in sequence. A partial area at the bottom of the material taking roller is located inside a paint box. Three servo motors are fixedly installed on one side of the support frame. The output shafts of the three servo motors all pass through the support frame and are fixedly connected to the material taking roller, the coating roller, and the support roller, respectively. An aluminum coil passing through the coating roller and the support roller is disposed inside the support frame.

[0013] In a preferred embodiment of the aluminum coil coating device of this utility model, the bottom of the coating box is curved in an arc shape towards the support roller, and a limiting roller located below the coating box is rotatably connected to the inner wall of the support frame.

[0014] In a preferred embodiment of the aluminum coil coating device of this utility model, the liquid delivery section includes a straight pipe fixedly connected to the inner wall of the support frame, a U-shaped pipe fixedly connected to the upper part of the straight pipe wall, a feeding pipe fixedly connected to the upper part of the U-shaped pipe wall, and multiple nozzles fixedly connected to the lower part of the straight pipe wall.

[0015] In a preferred embodiment of the aluminum coil coating device of this utility model, the flow-retarding section includes a guide plate fixedly connected to the inner wall of the paint box. The guide plate is curved in an arc shape, and a gap is left between the bottom of the guide plate and the bottom of the inner cavity of the paint box for the paint to pass through.

[0016] In a preferred embodiment of the aluminum coil coating device of this utility model, the flow control section further includes multiple V-shaped plates fixed in the paint box, with the bends of the multiple V-shaped plates pointing vertically upward and vertically aligned with their respective nozzles.

[0017] In a preferred embodiment of the aluminum coil coating device of this utility model, a drain pipe is fixedly connected to one side of the coating box, and one end of the drain pipe passes through the support frame and is fitted with a valve.

[0018] In a preferred embodiment of the aluminum coil coating device of this utility model, the cleaning unit includes a brush plate fixedly connected to the inner wall of the support frame, and the brush plate is V-shaped.

[0019] The beneficial effects of this utility model are as follows: When the infusion section delivers liquid paint into the paint box, the slow flow section can reduce the shaking caused by the liquid flow, so that the coating component can fully and evenly obtain the paint in a relatively stable liquid surface and roll the paint evenly onto the surface of the aluminum coil, thereby reducing the coating thickness fluctuation on the surface of the aluminum coil. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of the aluminum coil coating device proposed in this utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the support frame proposed in this utility model;

[0023] Figure 3 This is a cross-sectional schematic diagram of the paint box proposed in this utility model. Attached image description:

[0025] 100. Support frame; 101. Conveyor roller;

[0026] 200, Coating unit; 201, Paint box; 202, Coating assembly; 202a, Feed roller; 202b, Coating roller; 202c, Support roller; 202d, Servo motor; 203, Limiting roller;

[0027] 300. Feeding unit; 301. Infusion section; 301a. Straight pipe; 301b. U-shaped pipe; 301c. Feeding pipe; 301d. Nozzle; 302. Flow control section; 302a. Guide plate; 302b. V-shaped plate; 303. Drain pipe;

[0028] 400, Cleaning unit; 401, Brush board. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0032] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0033] Example 1

[0034] Reference Figures 1-3 The first embodiment of this utility model provides an aluminum coil roller coating device that can reduce liquid sloshing during coating addition, thereby ensuring that the coating can be uniformly roller coated on the surface of the aluminum coil. It includes: a support frame 100, a coating unit 200, a feeding unit 300, and a cleaning unit 400.

[0035] Among them, multiple conveying rollers 101 are rotatably connected to the inner wall of the support frame 100;

[0036] The coating unit 200 includes a paint box 201 fixedly connected to the inner wall of the support frame 100, and the coating unit 200 also includes a coating assembly 202 for coating aluminum coils.

[0037] The feeding unit 300 is installed in the support frame 100. The feeding unit 300 includes a liquid delivery section 301 and a slow flow section 302 installed in the paint box 201. The liquid delivery section 301 is used to deliver paint into the paint box 201, and the slow flow section 302 is used to reduce the sloshing of the liquid surface when adding paint.

[0038] The cleaning unit 400 is installed inside the support frame 100 and is used to pre-clean the surface of the aluminum coil.

[0039] An external aluminum coil traction device or winding machine drives the unfolded aluminum coil to move within the support frame 100. The conveying roller 101 supports the bottom of the aluminum coil, allowing it to move on the conveying roller 101. The cleaning unit 400 cleans the upper surface of the aluminum coil to reduce the impact of dust on paint adhesion. The conveying liquid 301 delivers liquid paint into the paint box 201. During the conveying process, the slow flow section 302 reduces the sloshing of the liquid surface in the paint box 201, so that the coating component 202 can fully and evenly obtain the paint in the paint box 201 and evenly roll the paint onto the surface of the aluminum coil.

[0040] Example 2

[0041] Reference Figures 1-3 This is the second embodiment of the present invention. Unlike the previous embodiment, the coating assembly 202 includes a material taking roller 202a, a coating roller 202b, and a support roller 202c that are rotatably connected to the inner wall of the support frame 100 in sequence. A partial area at the bottom of the material taking roller 202a is located inside the paint box 201. Three servo motors 202d are fixedly installed on one side of the support frame 100. The output shafts of the three servo motors 202d all pass through the support frame 100 and are fixedly connected to the material taking roller 202a, the coating roller 202b, and the support roller 202c respectively. An aluminum coil passing through the coating roller 202b and the support roller 202c is provided inside the support frame 100.

[0042] Three servo motors 202d drive the material pick-up roller 202a, coating roller 202b, and support roller 202c to rotate, respectively. Figure 2 As shown, the aluminum coil passes through the coating roller 202b and the support roller 202c. The rotating pick-up roller 202a can adhere the paint in the paint box 201 to its own surface, and the paint on the surface of the pick-up roller 202a is transferred to the surface of the coating roller 202b. The support roller 202c is used to support the lower surface of the aluminum coil, so that the coating roller 202b rolls the paint on its own surface onto the surface of the aluminum coil. The pick-up roller 202a continuously delivers paint to the coating roller 202b to achieve the effect of continuous roll coating on the surface of the aluminum coil.

[0043] The bottom of the paint box 201 is curved in an arc shape towards the support roller 202c, and the inner wall of the support frame 100 is rotatably connected to the limiting roller 203 located below the paint box 201.

[0044] The feeding roller 202a is located at the arc-shaped bend of the paint box 201 to reduce the dead angle of the feeding roller 202a when the paint is applied. The limiting roller 203 is used to limit the upper surface of the aluminum coil so that the aluminum coil will not come into contact with the bottom of the paint box 201.

[0045] Example 3

[0046] Reference Figure 1 and Figure 3 This is the third embodiment of the present invention. Unlike the previous embodiment, the infusion unit 301 includes a straight pipe 301a fixedly connected to the inner wall of the support frame 100. A U-shaped pipe 301b is fixedly connected to the upper part of the pipe wall of the straight pipe 301a. A feeding pipe 301c is fixedly connected to the upper part of the pipe wall of the U-shaped pipe 301b. Multiple nozzles 301d are fixedly connected to the lower part of the pipe wall of the straight pipe 301a.

[0047] The top of the feeding pipe 301c is connected to the paint delivery pipe, which is responsible for introducing the paint. Its bottom end is located at the center of the U-shaped pipe 301b. The two ends of the U-shaped pipe 301b are respectively connected to the quarter-length of the straight pipe 301a. This structural design allows the paint to be evenly dispersed in the straight pipe 301a when it flows through the U-shaped pipe 301b into the straight pipe 301a. In this way, the amount of paint sprayed by each nozzle 301d connected to the straight pipe 301a is approximately the same, ensuring that the paint added to the paint box 201 is uniform and stable.

[0048] Specifically, the flow-retarding section 302 includes a guide plate 302a fixedly connected to the inner wall of the paint box 201. The guide plate 302a is curved in shape to fit the material take-up roller 202a, and a gap is left between the bottom of the guide plate 302a and the bottom of the inner cavity of the paint box 201 for the paint to pass through.

[0049] The guide plate 302a separates the nozzle 301d from the feed roller 202a, so that the paint added by the nozzle 301d is concentrated on one side of the guide plate 302a, so as to avoid the liquid surface below the nozzle 301d from sloshing and affecting the other side of the guide plate 302a. The paint sprayed by the nozzle 301d can pass through the gap at the bottom of the guide plate 302a and slowly flow into the other side, so as to ensure the stability of the liquid surface below the feed roller 202a. The arc design of the guide plate 302a perfectly matches the arc area of ​​the paint box 201, forming a semi-circular space, so that the feed roller 202a can rotate smoothly in the semi-circular space and fully adhere the paint.

[0050] The slow-flow section 302 also includes multiple V-shaped plates 302b fixed inside the paint box 201. The bends of the multiple V-shaped plates 302b are vertically upward and vertically aligned with the corresponding nozzles 301d.

[0051] A gap is left between two adjacent V-shaped plates 302b to allow paint to flow. When the nozzle 301d sprays paint, the paint will directly impact the top of the V-shaped plate 302b and then be diverted to both sides by the V-shaped plate 302b to prevent the paint from being sprayed vertically into the bottom of the paint box 201. This prevents paint from splashing and causing large-scale oscillation of the liquid surface due to direct impact, thus effectively buffering the impact force of the paint and greatly reducing the sloshing of the liquid surface.

[0052] In addition, a drain pipe 303 is fixedly connected to one side of the paint box 201, and one end of the drain pipe 303 passes through the support frame 100 and is fitted with a valve.

[0053] After the aluminum coil coating is completed, open the valve of the drain pipe 303 to drain the remaining coating in the coating box 201 through the drain pipe 303.

[0054] Example 4

[0055] Reference Figure 1 and Figure 2 This is the fourth embodiment of the present invention. Unlike the previous embodiment, the cleaning unit 400 includes a brush plate 401 fixedly connected to the inner wall of the support frame 100. The brush plate 401 is V-shaped and curved.

[0056] The brush at the bottom of the brush plate 401 is in contact with the surface of the aluminum coil. When the aluminum coil is moving, the brush plate 401 can clean the surface of the aluminum coil. The V-shaped bending design of the brush plate 401 allows dust and debris to move automatically along the two oblique directions of the brush plate 401 and slide off from both sides of the aluminum plate to avoid dust accumulation on the aluminum plate.

[0057] During use, the unfolded aluminum coil is moved within the support frame 100 so that it is positioned above the conveying roller 101 and its upper surface contacts the brush plate 401. The aluminum coil is then passed between the coating roller 202b and the support roller 202c, and its upper surface is limited by the limiting roller 203. Paint is introduced through the top of the feeding pipe 301c, and the nozzle 301d adds paint to the paint box 201. The paint sprayed from the nozzle 301d is diverted to both sides by the V-shaped plate 302b to prevent the paint from being sprayed vertically into the bottom of the paint box 201. The guide plate 302a is used to prevent the liquid surface below the nozzle 301d from sloshing and affecting the other side of the guide plate 302a. The paint sprayed from the nozzle 301d can pass through the gap at the bottom of the guide plate 302a and flow to the other side of the guide plate 302a, so that a layer of paint can be attached to the surface of the pick-up roller 202a.

[0058] Subsequently, three servo motors 202d drive the feeding roller 202a, coating roller 202b, and support roller 202c to rotate. Simultaneously, the traction device moves the aluminum coil, allowing the brush plate 401 to clean the surface of the aluminum coil. The rotating feeding roller 202a transfers the coating material from its surface to the coating roller 202b, allowing the coating roller 202b to apply the coating material from its surface to the surface of the aluminum coil. The feeding roller 202a continuously supplies coating material to the coating roller 202b, achieving continuous coating of the aluminum coil surface. After the coating of the aluminum coil is completed, the servo motor 202d is turned off, and the valve of the drain pipe 303 is opened to discharge the remaining coating material in the coating box 201 through the drain pipe 303 for recycling.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An aluminum coil coating apparatus, characterized in that, include: A support frame (100) has multiple conveying rollers (101) rotatably connected to its inner wall; The coating unit (200) includes a paint box (201) fixedly connected to the inner wall of the support frame (100), and the coating unit (200) also includes a coating assembly (202) for coating aluminum coils; A feeding unit (300) is provided in the support frame (100). The feeding unit (300) includes an infusion section (301) and a slow-flow section (302) provided in the paint box (201). The infusion section (301) is used to deliver paint into the paint box (201), and the slow-flow section (302) is used to reduce the sloshing of the liquid surface when adding paint. A cleaning unit (400) is disposed within a support frame (100) and is used to pre-clean the surface of the aluminum coil.

2. The aluminum coil coating apparatus according to claim 1, characterized in that: The coating assembly (202) includes a material take-up roller (202a), a coating roller (202b), and a support roller (202c) that are rotatably connected to the inner wall of the support frame (100). A partial area at the bottom of the material take-up roller (202a) is located inside the paint box (201). Three servo motors (202d) are fixedly installed on one side of the support frame (100). The output shafts of the three servo motors (202d) all pass through the support frame (100) and are fixedly connected to the material take-up roller (202a), the coating roller (202b), and the support roller (202c), respectively. An aluminum coil passing through the coating roller (202b) and the support roller (202c) is provided inside the support frame (100).

3. The aluminum coil coating apparatus according to claim 2, characterized in that: The bottom of the paint box (201) is curved in an arc shape towards the support roller (202c), and the inner wall of the support frame (100) is rotatably connected to a limiting roller (203) located below the paint box (201).

4. The aluminum coil coating apparatus according to claim 3, characterized in that: The infusion unit (301) includes a straight pipe (301a) fixedly connected to the inner wall of the support frame (100), a U-shaped pipe (301b) fixedly connected to the upper part of the straight pipe (301a), a feeding pipe (301c) fixedly connected to the upper part of the U-shaped pipe (301b), and a plurality of nozzles (301d) fixedly connected to the lower part of the straight pipe (301a).

5. The aluminum coil coating apparatus according to claim 3, characterized in that: The slow-flow section (302) includes a guide plate (302a) fixedly connected to the inner wall of the paint box (201). The guide plate (302a) is curved in an arc shape, and the bottom of the guide plate (302a) and the bottom of the inner cavity of the paint box (201) have a gap for the paint to pass through.

6. The aluminum coil coating apparatus according to claim 5, characterized in that: The slow-flow section (302) also includes multiple V-shaped plates (302b) fixed inside the paint box (201), with the bends of the multiple V-shaped plates (302b) pointing vertically upward and vertically aligned with the corresponding nozzles (301d).

7. The aluminum coil coating apparatus according to claim 6, characterized in that: A drain pipe (303) is fixedly connected to one side of the paint box (201), and one end of the drain pipe (303) passes through the support frame (100) and is fitted with a valve.

8. The aluminum coil coating apparatus according to claim 7, characterized in that: The cleaning unit (400) includes a brush plate (401) fixedly connected to the inner wall of the support frame (100), the brush plate (401) being V-shaped.

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