Coating mechanism and device

Abstract

The utility model provides a coating mechanism and device, and relates to the field of coating machines. The coating mechanism comprises a machine box, a feeding roller, a discharging roller, a spot coating assembly, a roller coating assembly and an anilox roller, the feeding roller, the discharging roller, the spot coating assembly, the roller coating assembly and the anilox roller are arranged on the machine box, the feeding roller and the discharging roller are matched to convey a coating base material, and a first conveying path and a second conveying path are arranged between the feeding roller and the discharging roller. The point coating assembly is located on a first conveying path, the roller coating assembly is located on a second conveying path, and the anilox roller moves between the point coating assembly and the roller coating assembly in a switching mode. The anilox roller is switched between the point coating assembly and the roller coating assembly, the purpose of giving consideration to the point coating mode and the roller coating mode is achieved, the flexibility is improved, the diversified requirements are met, the two coating modes share the feeding roller, the discharging roller and the anilox roller, different coating modes are achieved only through one coating mechanism, the equipment cost is saved, and the production efficiency is improved. The occupied area is reduced.

Description

Technical Field

[0001] This application relates to the field of coating machines, and more specifically, to a coating mechanism and apparatus. Background Technology

[0002] A coating machine is an important piece of equipment used to uniformly coat liquid materials onto the surface of a substrate, and it has wide applications in electronics, optical films, packaging, and other fields. Currently, the most common coating methods include spot coating and roller coating, each with its unique application scenarios and technical characteristics. Spot coating is suitable for localized coating needs, allowing precise control of the coating area and avoiding material waste; while roller coating is suitable for large-area continuous coating and has high production efficiency. However, existing coating machines typically only support one coating method, either focusing on spot coating or specifically designed for roller coating, making it difficult to meet the different needs of both methods. This single coating method has certain limitations in practical applications, especially when flexible switching between coating modes is required to adapt to different production tasks; existing coating machines struggle to meet diverse needs. Utility Model Content

[0003] The purpose of this application is to provide a coating mechanism and apparatus that can accommodate both dot coating and roller coating modes, flexibly switch between different coating modes, and meet diverse needs.

[0004] In a first aspect, the present invention provides a coating mechanism, which includes a housing, and a feed roller, a discharge roller, a dot coating assembly, a roller coating assembly, and an anilox roller mounted on the housing. The feed roller and the discharge roller cooperate to transport the coating substrate, and a first transmission path and a second transmission path are provided between the feed roller and the discharge roller. The dot coating assembly is located on the first transmission path, the roller coating assembly is located on the second transmission path, and the anilox roller switches between the dot coating assembly and the roller coating assembly.

[0005] In an optional embodiment, the dotting assembly includes a dotting roller and a flexographic roller, which are respectively disposed on both sides of the first transmission path and abut against each other, and the anilox roller moves to abut against the flexographic roller.

[0006] In an optional embodiment, the dotting roller rotates in the opposite direction to the flexographic roller, and the anilox roller rotates in the opposite direction to the flexographic roller.

[0007] In an optional embodiment, the roll coating assembly includes a first roll coating guide roller and a second roll coating guide roller, the first roll coating guide roller and the second roll coating guide roller being disposed on one side of the second transport path, and the anilox roller being moved to the other side of the second transport path.

[0008] In an optional embodiment, the first coating roller, the second coating roller, and the anilox roller rotate in the same direction, and the rotation direction of the anilox roller at the position in direct contact with the coating substrate is opposite to the movement direction of the coating substrate.

[0009] In an optional embodiment, the first and second roller coating rollers are detachably mounted on the chassis.

[0010] In an optional embodiment, the roller coating assembly has a clearance state in which it can provide clearance space for the anilox roller to move to abut against the dot coating assembly.

[0011] In an optional embodiment, the coating mechanism further includes a first drive roller, a second drive roller, and a third drive roller, wherein the first drive roller is located at the beginning of the first transport path and the second transport path, the second drive roller is located at the rear end of the dot coating assembly along the first transport path, and the third drive roller is located at the front end of the roll coating assembly along the second transport path.

[0012] In an optional embodiment, the coating mechanism further includes a material box and a receiving box, the material box being used to supply slurry to the anilox roller, and the receiving box being disposed below the dot coating assembly and the roller coating assembly.

[0013] Secondly, this utility model provides a coating apparatus, including the coating mechanism described in the foregoing embodiments.

[0014] Compared to existing technologies, the beneficial effects of this application are:

[0015] This application utilizes an anilox roller to switch between the dot coating assembly and the roll coating assembly to achieve the purpose of accommodating both dot coating and roll coating modes, thereby improving flexibility and meeting diverse needs. Furthermore, the two coating modes of this application share the feed roller, discharge roller, and anilox roller, and different coating modes are achieved through only one coating mechanism, saving equipment costs and reducing floor space. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A connection diagram of the coating mechanism is shown in some embodiments;

[0018] Figure 2A diagram showing the first transport path of the coating mechanism (removal of the roller coating assembly) in some embodiments is shown;

[0019] Figure 3 The diagram illustrates the operating principle of the second transport path of the coating mechanism in some embodiments;

[0020] Figure 4 A schematic diagram of the mounting structure of the first coating roller and the bearing housing is shown in some embodiments;

[0021] Figure 5 A schematic diagram of another mounting structure of the first coating roller and bearing housing is shown in some embodiments;

[0022] Figure 6 A schematic diagram of the dismantling structure of the first coating roller and bearing housing is shown in some embodiments;

[0023] Figure 7 A diagram showing the first transport path of the coating mechanism in some embodiments (while simultaneously moving the roller coating assembly) is provided.

[0024] Figure 8 Schematic diagrams of the movement of the roll coating assembly are shown in some embodiments;

[0025] Figure 9 A schematic diagram showing the movement of the roll coating assembly at another angle in some embodiments is shown;

[0026] Figure 10 A diagram showing the first transport path of the coating mechanism in some embodiments (moving the roller coating assembly respectively) is shown.

[0027] Explanation of key component symbols:

[0028] 100-Chassis; 200-Feed roller; 300-Discharge roller; 400-Dotting assembly; 410-Dotting guide roller; 420-Flexible roller; 500-Roll coating assembly; 510-First roll coating guide roller; 520-Second roll coating guide roller; 530-Bearing housing; 531-Base; 532-Cover; 533-Hinge shaft; 534-Fastener; 540-Drive cylinder; 550-Drive component; 600-Anilox roller; 700-First drive roller; 800-Second drive roller; 900-Third drive roller; 1000-Material box; 1100-Receiving box; a-First transmission path; b-Second transmission path. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] Example 1

[0035] This embodiment is applicable to lithium battery coated separators.

[0036] Please see Figure 1This embodiment provides a coating mechanism, which includes a housing 100, and a feed roller 200, a discharge roller 300, a dot coating assembly 400, a roller coating assembly 500, and an anilox roller 600 mounted on the housing 100.

[0037] The chassis 100 has an internal space in which the discharge roller 300, dot coating assembly 400, roller coating assembly 500 and anilox roller 600 are installed, while the feed roller 200 is installed outside the chassis 100.

[0038] The feed roller 200 and the discharge roller 300 cooperate to transport the coating substrate, and a first transport path a and a second transport path b are provided between the feed roller 200 and the discharge roller 300. It can be understood that the coating substrate is input from the feed roller 200, coated through the first transport path a or the second transport path b, and finally output from the discharge roller 300.

[0039] In this embodiment, the feed roller 200 and the discharge roller 300 can be configured as vacuum adsorption rollers, and both the feed roller 200 and the discharge roller 300 can be used as active rollers.

[0040] Please see Figure 1 and Figure 2 The dot coating component 400 is used to implement the dot coating mode, and the dot coating component 400 is located in the first transmission path a. Specifically, the dot coating component 400 includes a dot coating roller 410 and a flexographic roller 420. The dot coating roller 410 and the flexographic roller 420 are respectively arranged on both sides of the first transmission path a and abut against each other. The anilox roller 600 moves to abut against the flexographic roller 420.

[0041] As described above, the coating substrate is sandwiched between the dot coating roller 410 and the flexographic roller 420, that is, one surface of the coating substrate is in contact with the dot coating roller 410, and the other surface of the coating substrate is in contact with the flexographic roller 420. After the anilox roller 600 comes into contact with the flexographic roller 420, it transfers the slurry of the anilox roller 600 onto the flexographic roller 420. The flexographic roller 420 dot coats the surface of the coating substrate, and through roller printing, a layer of regular pattern with uniform spacing is presented on the coating substrate, thereby realizing the dot coating mode.

[0042] In this embodiment, the rotation directions of the dot-coating roller 410 and the flexographic roller 420 can be set to be opposite, and the rotation directions of the anilox roller 600 and the flexographic roller 420 can be set to be opposite.

[0043] Please see Figure 1 and Figure 3The roller coating assembly 500 is used to implement the roller coating mode, and the roller coating assembly 500 is located in the second transport path b. Specifically, the roller coating assembly 500 includes a first roller coating guide roller 510 and a second roller coating guide roller 520. The first roller coating guide roller 510 and the second roller coating guide roller 520 are disposed on one side of the second transport path b, and the anilox roller 600 moves to the other side of the second transport path b.

[0044] As described above, the coating substrate is sandwiched between the roller coating assembly 500 and the anilox roller 600, that is, one surface of the coating substrate is in contact with the first roller coating roller 510 and the second roller coating roller 520, and the other surface of the coating substrate is in contact with the anilox roller 600. The anilox roller 600 performs roller coating on the surface of the coating substrate, thereby realizing the roller coating mode.

[0045] This embodiment can also be configured such that the first coating roller 510, the second coating roller 520, and the anilox roller 600 rotate in the same direction, and the rotation direction of the anilox roller 600 at the position directly in contact with the coating substrate is opposite to the movement direction of the coating substrate. Please refer to [link to relevant documentation]. Figures 1 to 3 The anilox roller 600 switches between the dot coating assembly 400 and the roller coating assembly 500. In this embodiment, the linear movement of the anilox roller 600 can be achieved by a cylinder. When the piston rod of the cylinder extends, the anilox roller 600 moves to the dot coating assembly 400. When the piston rod retracts, the anilox roller 600 moves to the roller coating assembly 500.

[0046] In dot coating mode, the anilox roller 600 rotates and is used as an indirect coating element. In roller coating mode, the anilox roller 600 rotates and is used as a direct coating element.

[0047] In some embodiments, the first coating roller 510 and the second coating roller 520 are detachably mounted on the housing 100.

[0048] Please see Figures 4 to 6 Taking the first roller coating roller 510 as an example, the detachable connection can be achieved through the bearing seat 530. The bearing seat 530 includes a seat body 531 and a cover body 532. The cover body 532 and the seat body 531 are hinged, and the cover body 532 rotates relative to the seat body 531 around the hinge axis 533. When rotated to the position, the cover body 532 and the seat body 531 close together and define the placement position for the first roller coating roller 510. The two ends of the first roller coating roller 510 are placed in the two bearing seats 530 respectively, and the seat body 531 and the cover body 532 are fastened together by fasteners 534.

[0049] Please continue reading. Figure 3 Similarly, the detachable connection method of the second coating roller 520 is the same as that of the first coating roller 510, and will not be described again here.

[0050] Please see Figures 2 to 4 If switching from roller coating mode to spot coating mode, the first roller coating guide roller 510 and the second roller coating guide roller 520 of the roller coating assembly 500 block the movement path of the anilox roller 600. At this time, it is only necessary to remove the first roller coating guide roller 510 and the second roller coating guide roller 520, which is convenient and quick.

[0051] If switching from dot coating mode to roller coating mode, after the anilox roller 600 retracts, the first roller coating guide roller 510 and the second roller coating guide roller 520 are reinstalled on the bearing seat 530, which has the advantage of stability and reliability.

[0052] In some embodiments, the roller coating assembly 500 has a clearance state in which it provides clearance space for the anilox roller 600, allowing the anilox roller 600 to move to abut against the dot coating assembly 400. This design allows for direct movement of the roller coating assembly 500, avoiding the problems of disassembling and assembling the roller coating assembly 500 and reducing operational difficulty.

[0053] The above avoidance state can be achieved by driving cylinder 540, including but not limited to the following two methods:

[0054] Please see Figures 7 to 9 The first method is to simultaneously control the first roller coating roller 510 and the second roller coating roller 520 through two drive cylinders 540 to move the entire roller coating assembly 500. If switching from roller coating mode to dot coating mode, the drive cylinders 540 control the roller coating assembly 500 to move to a position to avoid the anilox roller 600. If switching from dot coating mode to roller coating mode, after the anilox roller 600 retracts, the roller coating assembly 500 is moved back to its original position.

[0055] Please see Figure 10 The second method involves controlling the first coating roller 510 and the second coating roller 520 respectively using two drive cylinders (not shown in the figure). For ease of description and understanding, the two drive cylinders are defined as the first cylinder and the second cylinder, respectively. The first coating roller 510 is connected to the drive end of the first cylinder, and the second coating roller 520 is connected to the drive end of the second cylinder. If switching from roller coating mode to dot coating mode, the first cylinder controls the first coating roller 510 to move away from the second coating roller 520, and the second cylinder controls the second coating roller 520 to move away from the first coating roller 510. That is, the first coating roller 510 and the second coating roller 520 move away from each other, thereby creating a clearance space. If switching from dot coating mode to roller coating mode, after the anilox roller 600 retracts, the first coating roller 510 and the second coating roller 520 move closer to each other.

[0056] Please see Figure 3 and Figure 8In practical applications, the width of the second transmission path b can be adjusted. Specifically, the coating mechanism also includes a drive unit 550, which is configured as a cylinder.

[0057] The number of driving components 550 can be one. The first coating roller 510 and the second coating roller 520 are simultaneously connected to the driving end of the driving component 550. The driving component 550 controls the gap between the first coating roller 510 and the anilox roller 600, and at the same time controls the gap between the second coating roller 520 and the anilox roller 600.

[0058] The number of drive components 550 can also be two. One drive component 550 is connected to the first coating roller 510, and the other drive component 550 is connected to the second coating roller 520. The two drive components 550 control the gap between the first coating roller 510 and the anilox roller 600 and the gap between the second coating roller 520 and the anilox roller 600, respectively. The widths of these two gaps can be the same or different, which makes it more flexible in use.

[0059] When it is necessary to skip the joint of the coating substrate during the coating process, the first roller coating guide roller 510 and the second roller coating guide roller 520 can be moved by the drive component 550 to increase the gap between the roller coating assembly 500 and the anilox roller 600 so that the joint can pass through.

[0060] To improve the movement accuracy of the roller coating assembly 500 and reduce movement deviation, the first roller coating guide roller 510 can be slidably connected to the housing 100, and the second roller coating guide roller 520 can be slidably connected to the housing 100. Specifically, the sliding connection method includes, but is not limited to, slider and slide rail cooperation. For example, a slider is set on the first roller coating guide roller 510, and a slide rail is set on the housing 100. While the drive component 550 drives the first roller coating guide roller 510 to move, the slider moves on the slide rail.

[0061] Please see Figures 1 to 3 Based on the above, this embodiment further explains the dot coating mode of the coating mechanism as follows:

[0062] S100. Move the anilox roller 600 to abut the flexographic roller 420.

[0063] S110. Start the coating mechanism, and the coating substrate is input from the feed roller 200 into the first transport path a.

[0064] S120. When dot coating is performed on the first transmission path a, the slurry of the anilox roller 600 is coated onto the coating substrate through the flexographic roller 420, and the semi-finished product after coating is output from the discharge roller 300.

[0065] This embodiment further explains the roller coating mode of the coating mechanism as follows:

[0066] S200. Move the anilox roller 600 to engage with the roller coating assembly 500.

[0067] S210. Start the coating mechanism, and the coating substrate is input from the feed roller 200 to the second transport path b.

[0068] S220. During the roll coating process in the second transmission path b, the slurry from the anilox roller 600 is directly applied to the coating substrate, and the semi-finished product after coating is output from the discharge roller 300.

[0069] This embodiment utilizes the anilox roller 600 to switch between the dot coating assembly 400 and the roller coating assembly 500 to achieve the purpose of accommodating both dot coating and roller coating modes, thereby improving flexibility and meeting diverse needs. Furthermore, the two coating modes in this embodiment share the feed roller 200, discharge roller 300, and anilox roller 600, achieving different coating modes through only one coating mechanism, thus saving equipment costs and reducing floor space.

[0070] Example 2

[0071] Please see Figure 1 Based on Embodiment 1, this embodiment is improved in that the coating mechanism further includes a first transmission roller 700, a second transmission roller 800 and a third transmission roller 900. The first transmission roller 700 is located at the beginning of the first transmission path a and the second transmission path b, the second transmission roller 800 is located at the rear end of the dot coating assembly 400 along the first transmission path a, and the third transmission roller 900 is located at the front end of the roller coating assembly 500 along the second transmission path b.

[0072] In this embodiment, the first drive roller 700 is used to increase the feed wrap angle, which is beneficial for transmission. If the feed wrap angle is too small, it may cause difficulty in feeding the coating substrate. In addition, this embodiment uses the second drive roller 800 and the third drive roller 900 to ensure that the coating substrate maintains a flat film surface during transmission, thereby improving the coating effect.

[0073] Example 3

[0074] Please see Figure 1 Based on Embodiment 1, this embodiment is improved in that the coating mechanism further includes a material box 1000 and a receiving box 1100. The material box 1000 is used to provide slurry to the anilox roller 600, and the receiving box 1100 is disposed below the dot coating assembly 400 and the roller coating assembly 500.

[0075] In this embodiment, the material box 1000 is used to supply slurry to the anilox roller 600. In actual use, the slurry is transported by a pump. In this way, the slurry can be replenished in time to ensure that the slurry on the anilox roller 600 is more uniform.

[0076] In addition, in this embodiment, the receiving box 1100 is located below the dot coating assembly 400 and the roller coating assembly 500, so that this embodiment can recover the dripping slurry in both dot coating mode and roller coating mode, avoid slurry pollution of the environment, improve the slurry recovery rate, and protect environmental hygiene.

[0077] Example 4

[0078] Based on the coating mechanism in the above embodiments, this embodiment provides a coating apparatus, which includes the coating mechanism in the above embodiments.

[0079] In practical applications, the coating apparatus also includes an unwinding mechanism (not shown in the figure) and a winding mechanism (not shown in the figure). The unwinding mechanism is used to place the coated substrate to be wound up, so the unwinding mechanism is located at the front end of the coating mechanism. The winding mechanism is used to take up the coated semi-finished product, so the winding mechanism is located at the rear end of the coating mechanism.

[0080] Since this embodiment includes the coating mechanism in the above embodiments, it has all the advantages of the above embodiments.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A coating mechanism characterized by, The device includes a chassis, and a feed roller, an output roller, a dotting assembly, a roller coating assembly, and an anilox roller mounted on the chassis. The feed roller and the output roller cooperate to transport the coating substrate, and a first transport path and a second transport path are provided between the feed roller and the output roller. The dotting assembly is located on the first transport path, the roller coating assembly is located on the second transport path, and the anilox roller switches between the dotting assembly and the roller coating assembly.

2. The coating mechanism of claim 1, wherein The dot coating assembly includes a dot coating roller and a flexographic roller. The dot coating roller and the flexographic roller are respectively disposed on both sides of the first transmission path and abut against each other. The anilox roller moves to abut against the flexographic roller.

3. The coating mechanism of claim 2, wherein The dotting roller rotates in the opposite direction to the flexographic roller, and the anilox roller rotates in the opposite direction to the flexographic roller.

4. The coating mechanism according to any one of claims 1 to 3, wherein The roll coating assembly includes a first roll coating guide roller and a second roll coating guide roller, which are disposed on one side of the second transport path, and the anilox roller moves to the other side of the second transport path.

5. The coating mechanism of claim 4, wherein The first coating roller, the second coating roller, and the anilox roller rotate in the same direction, and the rotation direction of the anilox roller at the position in direct contact with the coating substrate is opposite to the movement direction of the coating substrate.

6. The coating mechanism of claim 4, wherein The first and second roller coating rollers are detachably mounted on the machine housing.

7. The coating mechanism according to any one of claims 1 to 3, wherein The roller coating assembly has a clearance state. In the clearance state, the roller coating assembly can provide clearance space for the anilox roller so that the anilox roller can move to abut against the dot coating assembly.

8. The coating mechanism according to any one of claims 1 to 3, wherein It also includes a first drive roller, a second drive roller, and a third drive roller. The first drive roller is located at the beginning of the first transmission path and the second transmission path. The second drive roller is located between the dot coating assembly and the feed roller. The third drive roller is located at the front end of the roll coating assembly along the second transmission path.

9. The coating mechanism according to any one of claims 1 to 3, wherein It also includes a material box and a receiving box, the material box being used to supply slurry to the anilox roller, and the receiving box being disposed below the dot coating assembly and the roller coating assembly.

10. A coating apparatus characterized by comprising: Includes the coating mechanism as described in any one of claims 1 to 9.

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