Double-bottoming coating treatment equipment for zip-top can cover
By introducing cooling conveyor rollers and adjusting conveyor components into the can lid production line, the drying and cooling of multiple base coating processes are integrated, solving the high cost problem caused by multiple equipment and improving production efficiency and economy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN EVERYHIGH NEW MATERIAL CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-15
AI Technical Summary
The current aluminum can production process involves multiple base coating processes, requiring multiple drying and cooling equipment, resulting in high economic and labor costs, as well as complex equipment maintenance.
Design a double-base coating treatment device for easy-open can lids. It adopts multiple cooling conveyor rollers with internal water tanks and coolant circulation system. Combined with the adjustment of conveyor components and the detection of material surface characteristics by piezoelectric film, it realizes the integration of drying and cooling, and reduces the number of equipment.
By using circulating cooling of the cooling conveyor rollers and intelligent detection of the regulating conveyor components, equipment costs and maintenance complexity are reduced, while production efficiency and economy are improved.
Smart Images
Figure CN224237270U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of beverage can production equipment, specifically to a double-base coating treatment device for beverage can lids. Background Technology
[0002] Coating is a method of applying a paste polymer, molten polymer, or polymer melt onto paper, cloth, or plastic film to produce a composite material (film). In the production of beverage cans, both sides of the metal need to be coated. The coating process includes spraying, drying, and cooling.
[0003] In existing coating processes, cooling conveyor rollers are generally used to transport materials. Both drying and cooling require specific equipment to operate on the materials. However, when multiple base coats are required, drying and cooling operations are needed after each base coat. Therefore, multiple drying and cooling equipment often need to be installed on production lines with multiple base coats. This not only incurs significant economic costs, but also, with a large number of devices, the inspection and maintenance of these devices will consume considerable manpower and time. Utility Model Content
[0004] The purpose of this invention is to provide a double-coating treatment device for easy-open can lids to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-coating treatment device for easy-open can lids, comprising an unwinding machine and a rewinding machine. A first conveying channel is installed at one end of the unwinding machine. A first spraying machine is installed at the upper end of the first conveying channel. A dryer is installed at one end of the first conveying channel. A support plate is installed at one end of the dryer. Multiple first lifting rods are symmetrically installed on both sides of the upper end of the support plate. A cooling conveying roller is installed between two first lifting rods of the same height. Two water channels are opened inside the cooling conveying roller. A connecting plate is installed on the outer side of each of the multiple first lifting rods. A pipe connected to the water channels is opened inside the connecting plate. One end of the pipe is connected to an external coolant tank via a water pump. The water channels inside the multiple cooling conveying rollers are all connected to the external coolant tank via pipes. A second conveying channel is installed at one end of the support plate. A second spraying machine is installed at the upper end of the second conveying channel. Another dryer and a support plate are sequentially installed at one end of the second conveying channel. A rewinding machine is installed at one end of the other support plate.
[0006] Preferably, multiple adjustable conveying components are installed in an equidistant array at the upper ends of the first conveying channel and the second conveying channel, as well as at the lower ends of the first sprayer and the second sprayer.
[0007] Preferably, the adjusting conveying assembly includes two second lifting rods, a central rotating plate, an extension plate, and adjusting conveying rollers. The two second lifting rods are rotatably connected to a central rotating plate. One end of the central rotating plate is connected to a drive motor via a rotating shaft. An extension plate is installed on both the left and right sides of the central rotating plate. Multiple adjusting conveying rollers are rotatably connected to the surfaces of the two extension plates and the central rotating plate.
[0008] Preferably, the surface of the adjusting conveyor roller is covered with multiple layers of piezoelectric films, each layer of piezoelectric film is separated by an insulating layer, and multiple piezoelectric films are connected to an external power source.
[0009] Preferably, the surface of the cooling conveyor roller is covered with a copper layer.
[0010] Preferably, spray heads are installed at the lower ends of the inlets of both the first and second sprayers, and the spray heads are connected to an external paint source.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. This double-coating treatment equipment for can lids involves unwinding the material via an unwinding machine and conveying it through the first conveying channel. As the material passes through the first spraying machine, a first layer of coating is applied. The material then enters a dryer for drying. After drying, the material is conveyed through multiple cooling conveyor rollers. Cooling liquid, driven by a water pump, enters the internal pipes of the connecting plate and circulates through the pipes into the water channels inside the cooling conveyor rollers, cooling the material on their surface. The cooled material then enters the second conveying channel and the second spraying machine for a second layer of coating, repeating the drying and cooling process. Finally, the material is wound up by a rewinding machine. By creating water channels inside the multiple cooling conveyor rollers, which circulate with the external coolant tank, the material on the surface of the cooling conveyor rollers is gradually cooled by the coolant. This replaces traditional cooling machines, performing cooling treatment simultaneously with material conveying, saving users economic costs and reducing maintenance costs.
[0013] 2. This double-base coating equipment for can lids uses adjustable conveyor components. Multiple adjustable conveyor components are arranged alternately to convey materials. During conveying, multiple piezoelectric films laid on the surface of the adjustable conveyor rollers generate charges when subjected to pressure. By comparing and analyzing the charges received by the outermost piezoelectric films on the surfaces of the multiple adjustable conveyor rollers, the system can determine the different roughness, hardness differences, and local defects of the material surface. Furthermore, by energizing the inner piezoelectric film of the adjustable conveyor roller, the deformation of the inner piezoelectric film is adjusted, thereby enhancing the sensitivity to minute deformations. For example, if the pressure on the left half of the material is detected to be too high, the system can reduce the power output of the left piezoelectric film, causing the right side of the adjustable conveyor roller to rise slightly, achieving a pressure rebalancing effect. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall production line structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the adjusting and conveying component structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the piezoelectric thin film structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the internal water channel structure of the cooling conveyor roller of this utility model.
[0018] In the diagram: 1. Unwinder; 2. First sprayer; 3. First conveyor channel; 4. Dryer; 5. Support plate; 6. First lifting rod; 7. Cooling conveyor roller; 8. Connecting plate; 9. Second conveyor channel; 10. Second sprayer; 11. Copper layer; 12. Rewinder; 13. Spray head; 14. Adjusting conveyor assembly; 1401. Second lifting rod; 1402. Center rotating plate; 1403. Extension plate; 1404. Adjusting conveyor roller; 15. Piezoelectric film; 16. Water trough. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] like Figures 1 to 4 As shown, the double-coating treatment equipment for can lids in this embodiment includes an unwinding machine 1 and a winding machine 12. Both the winding machine 1 and the unwinding machine 12 are existing mature technologies available on the market. A first conveying channel 3 is installed at one end of the unwinding machine 1, and a first spraying machine 2 is installed at the upper end of the first conveying channel 3. The first spraying machine 2 can perform a first-layer primer spraying on the conveyed material. A dryer 4 is installed at one end of the first conveying channel 3. The dryer 4 can slide the conveyed material and the first layer of coating on the surface. A dryer 4 is installed at one end of the dryer 4. A support plate 5 has multiple first lifting rods 6 symmetrically installed on both sides of its upper edge. A cooling conveyor roller 7 is installed between two first lifting rods 6 at the same height. The cooling conveyor roller 7 provides support for conveying the dried material. Two water channels 16 are opened inside the cooling conveyor roller 7. Connecting plates 8 are installed on the outer sides of the multiple first lifting rods 6. Pipes connected to the water channels 16 are opened inside the connecting plates 8. One end of the pipe is connected to an external coolant tank via a water pump. The water pump then cools the material. The coolant inside the coolant tank is drawn into the pipe inside the connecting plate 8. The coolant then enters the water channel 16 through the pipe and is finally transported from the other end of the water channel 16 to the pipe inside another connecting plate 8, and then back to the coolant tank, forming a circulation loop. The water channels 16 inside the multiple cooling conveying rollers 7 are all connected to the external coolant tank through pipes. It should be noted that each water channel 16 is independently connected to the external coolant tank through a pipe, that is, each water channel 16 is independently connected to a coolant tank. Through system control, the flow rate of coolant in the water channels 16 inside each cooling conveying roller 7 is different, thus forming a stepped cooling. A second conveying channel 9 is installed at one end of the support plate 5. A second spraying machine 10 is installed at the upper end of the second conveying channel 9. Another dryer 4 and support plate 5 are installed in sequence at one end of the second conveying channel 9. A winding machine 12 is installed at one end of the other support plate 5. The second spraying machine 10 can apply a second layer of paint to the material, which is then wound up by the winding machine 12.
[0022] Specifically, multiple adjustable conveying components 14 are installed at equal intervals on the upper ends of the first conveying channel 3 and the second conveying channel 9, as well as on the lower ends of the first spraying machine 2 and the second spraying machine 10. It should be noted that the multiple adjustable conveying components 14 installed on the surfaces of the first conveying channel 3 and the second conveying channel 9 are installed alternately with the multiple adjustable conveying components 14 installed on the lower ends of the first spraying machine 2 and the second spraying machine 10.
[0023] Furthermore, the adjusting conveying assembly 14 includes two second lifting rods 1401, a central rotating plate 1402, an extension plate 1403, and adjusting conveying rollers 1404. The two second lifting rods 1401 are rotatably connected to the central rotating plate 1402. One end of the central rotating plate 1402 is connected to a drive motor via a rotating shaft. An extension plate 1403 is installed on both the left and right sides of the central rotating plate 1402. Multiple adjusting conveying rollers 1404 are rotatably connected to the surfaces of the two extension plates 1403 and the central rotating plate 1402. The two second lifting rods 1401 can drive the central rotating plate 1402 to move up and down. A micro motor is installed inside any one of the second lifting rods 1401, which can drive the central rotating plate 1402 to rotate within a certain range. Under normal circumstances, the multiple adjusting conveying rollers 1404 at the upper end of the central rotating plate 1402 provide support for the material. The multiple adjusting conveying rollers 1404 on the surface of the extension plate 1403 can serve as a substitute.
[0024] Furthermore, the surface of the adjusting conveyor roller 1404 is covered with multiple layers of piezoelectric films 15, each layer of piezoelectric film 15 being separated by an insulating layer. Multiple piezoelectric films 15 are connected to an external power source and an external control platform, which controls the power supply to the piezoelectric films 15. By setting up adjusting conveyor components 14, multiple adjusting conveyor components 14 are alternately arranged to convey materials. During conveying, the multiple piezoelectric films 15 on the surface of the adjusting conveyor roller 1404 generate [electricity / energy] when subjected to pressure. The system uses charge analysis to compare the charges received by the outermost piezoelectric film 15 on the surfaces of multiple adjusting conveyor rollers 1404 to determine the different roughness, hardness differences, and local defects on the material surface. Then, by energizing the inner piezoelectric film 15 of the adjusting conveyor roller 1404, the system adjusts the deformation of the inner piezoelectric film 15, thereby enhancing the sensitivity to minute deformations. For example, if the pressure on the left half of the material is detected to be too high, the system can reduce the power output of the left piezoelectric film 15, causing the right side of the adjusting conveyor roller 1404 to be slightly raised, thus achieving a pressure rebalancing effect.
[0025] Furthermore, a copper layer 11 is laid on the surface of the cooling conveyor roller 7. The copper layer 11 has good thermal conductivity, which can accelerate the heat exchange efficiency between the material and the cooling conveyor roller 7.
[0026] Furthermore, spray heads 13 are installed at the lower end of the inlet of both the first sprayer 2 and the second sprayer 10. The spray heads 13 are connected to an external paint source and can spray the paint from the external paint source outward to coat the material.
[0027] The usage method of this embodiment is as follows: The material is released by the unwinder 1 and enters the first conveying channel 3 for conveying. When passing through the first sprayer 2, the surface of the material is coated with a first layer of paint, and then enters the dryer 4 for drying. The dried material enters the surface of multiple cooling conveying rollers 7 for conveying. Cooling liquid enters the internal pipe of the connecting plate 8 under the action of the water pump, and is then transported through the pipe into the water channel 16 inside the cooling conveying roller 7 for circulation, so as to cool down the material conveyed on the surface of the cooling conveying roller 7. The cooled material enters the second conveying channel 9 and the second sprayer 10 for a second layer of paint, and the above drying and cooling process is repeated. Finally, the winding machine 12 winds it up. By opening water channels 16 inside the multiple cooling conveying rollers 7, the multiple water channels 16 are connected to the external coolant tank in a circulation loop. The material conveyed on the surface of the cooling conveying rollers 7 is gradually cooled down by the coolant, which replaces the traditional cooling machine. Cooling is performed while the material is being conveyed, saving the user's economic costs and reducing maintenance costs.
[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A double-coating treatment device for easy-open can lids, comprising an unwinding machine (1) and a rewinding machine (12), characterized in that: The unwinding machine (1) is equipped with a first conveying channel (3) at one end, a first spraying machine (2) is installed at the upper end of the first conveying channel (3), a dryer (4) is installed at one end of the first conveying channel (3), a support plate (5) is installed at one end of the dryer (4), and multiple first lifting rods (6) are symmetrically installed on both sides of the upper end of the support plate (5). A cooling conveying roller (7) is installed between two first lifting rods (6) of the same height. Two water channels (16) are opened inside the cooling conveying roller (7). A connecting rod is installed on the outside of the multiple first lifting rods (6). The connecting plate (8) has a pipe inside that is connected to the water channel (16). One end of the pipe is connected to the external coolant tank via a water pump. The water channels (16) inside the multiple cooling conveying rollers (7) are all connected to the external coolant tank via pipes. One end of the support plate (5) is equipped with a second conveying channel (9). The upper end of the second conveying channel (9) is equipped with a second spraying machine (10). Another dryer (4) and a support plate (5) are installed in sequence at one end of the second conveying channel (9). A winding machine (12) is installed at one end of the other support plate (5).
2. The double-base coating treatment equipment for can lids according to claim 1, characterized in that: Multiple adjustable conveying components (14) are installed at equal intervals on the upper ends of the first conveying channel (3) and the second conveying channel (9) and on the lower ends of the first sprayer (2) and the second sprayer (10).
3. The double-base coating treatment equipment for can lids according to claim 2, characterized in that: The adjusting conveying assembly (14) includes two second lifting rods (1401), a central rotating plate (1402), an extension plate (1403), and adjusting conveying rollers (1404). The two second lifting rods (1401) are rotatably connected to the central rotating plate (1402). One end of the central rotating plate (1402) is connected to the drive motor through a rotating shaft. An extension plate (1403) is installed on both the left and right sides of the central rotating plate (1402). Multiple adjusting conveying rollers (1404) are rotatably connected to the surfaces of the two extension plates (1403) and the central rotating plate (1402).
4. The double-base coating treatment equipment for can lids according to claim 3, characterized in that: The surface of the regulating conveying roller (1404) is covered with multiple layers of piezoelectric films (15), and each layer of piezoelectric films (15) is separated by an insulating layer. Multiple piezoelectric films (15) are connected to an external power source.
5. The double-base coating treatment equipment for can lids according to claim 1, characterized in that: The surface of the cooling conveyor roller (7) is covered with a copper layer (11).
6. The double-base coating treatment equipment for can lids according to claim 1, characterized in that: Spray heads (13) are installed at the lower ends of the inlets of the first sprayer (2) and the second sprayer (10), and the spray heads (13) are connected to an external paint source.