Coating machine die head and coating machine

Abstract

The utility model provides a coating machine die head and a coating machine. The coating machine die head comprises a main body part, the main body part is provided with a cavity, a coating runner and a feeding runner, the cavity is used for containing slurry, the inlet end of the coating runner is communicated with the top of the cavity, the coating runner extends longitudinally, the outlet end of the coating runner is located at the bottom of the main body part, and the feeding runner is communicated with the cavity and used for inputting the slurry into the cavity. According to the utility model, the problem of pressure loss of the die head of the double-sided coating machine in the prior art is solved.

Description

Coating machine die head and coating machine Technical Field

[0001] This utility model relates to the field of coating machine technology, and more specifically, to a coating machine die head and a coating machine. Background Technology

[0002] Currently, to improve coating efficiency and reduce equipment costs and floor space, a new coating technology and equipment—the double-sided coating machine—has emerged. In traditional double-sided coating machines, the pressure equalization chamber of the die head is located directly above the pressure equalization coating channel. The gravity of the slurry in the pressure equalization chamber directly affects the coating thickness accuracy. During the intermittent period when the die head temporarily stops coating, the slurry in the pressure equalization chamber, due to gravity, will flow out of the die head lip from the pressure equalization channel. This results in a loss of internal pressure in the die head when coating resumes, requiring a considerable amount of time to re-establish the coating pressure field. Furthermore, when performing the second coating, the die head is mounted above the substrate and coating downwards. Since the lower surface of the substrate is already coated with slurry, it cannot be supported by the coating rollers, leaving the substrate in a suspended state. In this situation, the vibration of the substrate has a particularly significant impact on the coating thickness accuracy. Summary of the Invention

[0003] The main objective of this invention is to provide a coating machine die head and a coating machine to solve the problem of pressure loss in the die head of a double-sided coating machine in the prior art.

[0004] To achieve the above objectives, according to one aspect of the present invention, a coating machine die head is provided, comprising: a main body having a cavity, a coating channel, and a feed channel, the cavity being used to contain slurry, the inlet end of the coating channel being connected to the top of the cavity and extending longitudinally, the outlet end of the coating channel being located at the bottom of the main body, and the feed channel being connected to the cavity and used to input slurry into the cavity.

[0005] Furthermore, the main body includes multiple side molds, which are connected to form cavities and coating channels.

[0006] Furthermore, the multiple side molds include a first side mold and a second side mold, with the second side mold located above the first side mold. The upper surface of the first side mold has a downward recess that forms a cavity.

[0007] Furthermore, the plurality of side molds also includes a third side mold, which is located on one side of the first side mold, and the third side mold and the first side mold are fitted together with a gap to form at least a partial coating channel, which extends to the upper surface of the first side mold and communicates with the recess.

[0008] Furthermore, the coating machine die head also includes a gasket, which is disposed in the gap between the third side die and the first side die. The gasket has a hollow structure that forms at least part of the coating flow channel.

[0009] Furthermore, there are multiple gaskets, which are interchangeably disposed in the gap between the third side mold and the first side mold. At least two gaskets have different thicknesses and / or at least two gaskets have different widths of their cutout structures.

[0010] Furthermore, the coating machine die head also includes a guide roller, which is rotatably disposed at the bottom of the main body and located on one side of the outlet end of the coating channel.

[0011] Furthermore, the bottom of the main body has an upwardly recessed receiving portion, a portion of the roller is disposed within the receiving portion, and a portion of the roller protrudes from the receiving portion.

[0012] Furthermore, the roller is longitudinally adjustable relative to the main body, and the coating die head also includes an adjustment component, which is connected to the roller drive and drives the roller to move longitudinally to adjust its position.

[0013] According to another aspect of the present invention, a coating machine is provided, including the coating machine die head described above.

[0014] By employing the technical solution of this utility model, a cavity and a coating channel are provided, with the inlet end of the coating channel connected to the top of the cavity. Thus, when the die head is positioned above the substrate, the longitudinally extending coating channel can deliver the slurry to the upper surface of the substrate, thereby achieving coating on the upper surface of the substrate and ultimately achieving a double-sided coating effect. Because the coating channel is connected to the top of the cavity, the gravity of the slurry no longer acts directly above the coating channel. During normal coating, the slurry is delivered into the cavity through the feed channel and, under conveying pressure, is delivered downwards to the substrate through the coating channel, achieving longitudinal coating. The outlet end of the coating channel is the lip position for coating. When the machine is stopped, the feed channel no longer supplies slurry. In this case, the slurry remains within the cavity under gravity and does not actively enter the coating channel, thus preventing accidental leakage of slurry from the coating channel and effectively maintaining the slurry and pressure within the cavity. The above setup ensures that the cavity is roughly horizontal in a vertical coating scenario, so the gravity of the slurry inside the cavity will not directly act on the coating channel, thus not affecting the accuracy of the coating thickness, and preventing pressure loss due to gravity flowing out when coating stops. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 shows a schematic diagram of the structure of the coating machine die head of this utility model;

[0017] Figure 2 shows the front view of Figure 1;

[0018] Figure 3 shows a cross-sectional view along direction AA in Figure 2;

[0019] Figure 4 shows a schematic diagram of the coating machine of this utility model.

[0020] The above figures include the following reference numerals:

[0021] 10. Main body; 11. Cavity; 12. Coating channel; 13. Feed channel; 14. First side mold; 15. Second side mold; 16. Third side mold; 20. Gasket; 30. Passing roller; 40. Adjustment assembly; 50. Coating die head; 60. Coating steel roller; 70. Glue roller; 80. Conveyor roller. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] To address the problem of pressure loss in the die head of existing double-sided coating machines, this invention provides a coating machine die head and a coating machine.

[0026] As shown in Figures 1 to 3, a coating machine die head includes a main body 10. The main body 10 has a cavity 11, a coating channel 12, and a feed channel 13. The cavity 11 is used to contain slurry. The inlet end of the coating channel 12 is connected to the top of the cavity 11 and the coating channel 12 extends longitudinally. The outlet end of the coating channel 12 is located at the bottom of the main body 10. The feed channel 13 is connected to the cavity 11 and is used to input slurry into the cavity 11.

[0027] This embodiment features a cavity 11 and a coating channel 12, with the inlet end of the coating channel 12 connected to the top of the cavity 11. This allows the longitudinally extending coating channel 12 to deliver the slurry to the upper surface of the substrate when the die is positioned above it, thus achieving a double-sided coating effect. Because the coating channel 12 is connected to the top of the cavity 11, the gravity of the slurry no longer acts directly above the coating channel 12. In this way, during normal coating, the slurry is delivered into the cavity 11 through the feed channel 13 and then, under conveying pressure, downwards onto the substrate through the coating channel 12, achieving longitudinal coating. The outlet end of the coating channel 12 is the coating lip position. When the machine stops, the feed channel 13 no longer supplies slurry. At this time, the slurry will remain in the cavity 11 under the action of gravity and will not actively enter the coating channel 12, thus preventing the slurry from accidentally flowing out of the coating channel 12. This effectively maintains the slurry and pressure in the cavity 11. The above configuration ensures that the cavity 11 is in a roughly horizontal state when the die head is in a vertical coating scenario. The gravity of the slurry in the cavity 11 will not directly act on the coating channel 12, thus not affecting the accuracy of the coating thickness and preventing pressure loss due to gravity-induced outflow when coating stops.

[0028] The main body 10 of this embodiment includes multiple side molds, which are connected to form a cavity 11 and a coating channel 12. This makes the structure of the main body 10 easier to process, and also simplifies the formation of structures such as the cavity 11 and the coating channel 12.

[0029] As shown in Figure 3, the multiple side molds in this embodiment include a first side mold 14 and a second side mold 15. Both the first side mold 14 and the second side mold 15 are block-shaped structures, with the second side mold 15 located above the first side mold 14. Thus, the first side mold 14 and the second side mold 15 are stacked vertically. The upper surface of the first side mold 14 has a downward-facing recess, forming a cavity 11. When the first side mold 14 and the second side mold 15 are aligned vertically, the second side mold 15 covers the top of the recess, allowing the lower surface of the second side mold 15 and the recess to together form the cavity 11, achieving the effect of forming a cavity 11 inside the main body 10. The inlet end of the coating channel 12 can extend between the first side mold 14 and the second side mold 15, so that the inlet end of the coating channel 12 is located above the recess. This ensures that when coating is not being performed, the slurry in the recess remains within the recess and does not enter the coating channel 12 under gravity.

[0030] In this embodiment, the connection between the first side mold 14 and the second side mold 15 can be achieved by bolting. For example, mounting holes can be provided on both the first side mold 14 and the second side mold 15, and a stable connection can be achieved by inserting bolts into the mounting holes. Of course, in addition to bolting, other connection methods such as welding or snap-fit ​​can also be used to achieve the connection.

[0031] As shown in Figure 3, in this embodiment, in addition to the first side mold 14 and the second side mold 15 mentioned above, the multiple side molds also include a third side mold 16. Similar to the first side mold 14 and the second side mold 15, the third side mold 16 also has a block structure. However, the third side mold 16 is not stacked vertically, but arranged horizontally. That is, the third side mold 16 is located on one side of the first side mold 14, and there is a gap fit between the longitudinal side of the third side mold 16 and the longitudinal side of the first side mold 14. Thus, at least a partial coating channel 12 is formed at this gap. The coating channel 12 extends to the upper surface of the first side mold 14 and communicates with the recess. In this way, it is not necessary to separately open the coating channel 12. The coating channel 12 can be naturally formed by the gap fit between the first side mold 14 and the third side mold 16, which reduces the processing difficulty. Similarly, the third side mold 16 and the first side mold 14 can also be connected by the aforementioned bolt connection or other methods. The third side mold 16 can also extend upward to the side of the second side mold 15, so that the third side mold 16 can also be connected to the second side mold 15.

[0032] It should be noted that since there may be a certain distance between the recess and the gap in the lateral direction, a partial gap can be left on the contact surface between the first side mold 14 and the second side mold 15 and at the segment between the recess and the gap. This gap can also be part of the coating channel 12, so that the coating channel 12 includes two parts: the gap between the first side mold 14 and the third side mold 16, and the gap between the first side mold 14 and the second side mold 15. The two parts work together to achieve the effect of conveying the slurry in the cavity 11 to the outlet end.

[0033] Of course, in addition to the above-mentioned segmented arrangement, the main body 10 can also be a one-piece structure, with structures such as cavity 11, coating channel 12 and feed channel 13 formed inside the main body 10 by means of post-processing such as drilling and milling.

[0034] As shown in Figure 3, in this embodiment, the coating machine die head also includes a gasket 20. The gasket 20 is disposed in the gap between the third side die 16 and the first side die 14, thereby maintaining the gap between the third side die 16 and the first side die 14. Simultaneously, to avoid the gasket 20 affecting the flow of the slurry, the gasket 20 in this embodiment has a perforated structure. The perforated structure extends through opposite sides of the gasket 20 along the extension direction of the coating channel 12, thereby forming at least a portion of the coating channel 12. That is, the perforated portion can be used as the coating channel 12, while the other parts of the gap are blocked by the gasket 20. The size and number of the perforated structure can be adjusted as needed, thereby changing the size and number of the coating channels 12 accordingly, thus adjusting the slurry delivery rate.

[0035] Optionally, the number of gaskets 20 can be set as needed, and one or more can be used. In this embodiment, multiple gaskets 20 are preferably provided. The gaskets 20 are replaceably disposed in the gap between the third side mold 16 and the first side mold 14. In use, only one gasket 20 can be installed in the gap, while the others can be used as spares. In this embodiment, the thickness of at least two gaskets 20 is set to be different, and / or the width of the hollow structure of at least two gaskets 20 is set to be different, so that the size of the coating channel 12 formed by the gaskets 20 is not exactly the same. When connecting the first side mold 14 and the third side mold 16 together, the required gasket 20 can be selected and clamped between the first side mold 14 and the third side mold 16. This makes the gaskets 20 replaceable, allowing the size of the coating channel 12 to be adjusted according to different coating process requirements, ensuring that the size of the coating channel 12 meets coating needs, improving the adaptability of the die head to coating requirements, and facilitating replacement, which is beneficial for improving processing efficiency.

[0036] It should be noted that the thickness of the aforementioned gasket 20 is also the thickness of the perforated structure, and the width of the perforated structure is perpendicular to both the extension and thickness directions, which is the distance between the two sides of the perforated structure, i.e., the opening size of the coating channel 12. By changing the thickness of the gasket 20, the thickness of the perforated structure can be adjusted, thereby changing the flow rate of the coating channel 12. Similarly, by changing the width of the perforated structure, the flow rate of the coating channel 12 can also be changed.

[0037] As shown in Figure 3, in this embodiment, the coating machine die head also includes a guide roller 30. The guide roller 30 is rotatably disposed at the bottom of the main body 10 and located on one side of the outlet end of the coating channel 12. Thus, during coating, since the distance between the guide roller 30 and the outlet end of the coating channel 12 is very close, the guide roller 30 can support the substrate and stabilize the substrate, effectively reducing the vibration of the substrate at the outlet end of the coating channel 12, thereby improving the coating thickness consistency accuracy.

[0038] In this embodiment, the bottom of the main body 10, or more precisely, the bottom surface of the first side mold 14, has an upwardly recessed receiving portion. A portion of the roller 30 is disposed in the receiving portion, and the depth of the receiving portion is less than the diameter of the roller 30, so that a portion of the roller 30 protrudes from the receiving portion, allowing the roller 30 to effectively contact the substrate and achieve a supporting and stabilizing effect on the substrate.

[0039] As shown in Figures 1 and 2, in this embodiment, the guide roller 30 is longitudinally adjustable relative to the main body 10. The coating machine die head also includes an adjustment component 40, which is drivenly connected to the guide roller 30 and drives the guide roller 30 to move longitudinally. This allows the longitudinal position of the guide roller 30 to be adjusted, thereby changing the vertical distance between the guide roller 30 and the outlet end of the coating channel 12, and consequently changing the distance between the substrate and the outlet end of the coating channel 12, thus achieving the purpose of adjusting the gap between the substrate and the outlet end. The specific structural form of the adjustment component 40 can be set as needed; a threaded adjustment mechanism, etc., are all acceptable.

[0040] As shown in Figure 4, this embodiment also provides a coating machine, including the coating machine die head described above. The coating machine in this embodiment is a double-sided coating machine, which also includes another coating die head 50, a coating steel roller 60, a pressure roller 70, a conveyor roller 80, and other structures. The conveyor roller 80 is used to convey the substrate. The coating steel roller 60 and the pressure roller 70 are close to each other, forming a gap between them for the substrate to pass through, allowing the substrate to stably pass around the coating steel roller 60. The coating die head 50 is located at the outer edge of the coating steel roller 60. The coating steel roller 60 and the coating die head 50 are located on opposite sides of the substrate, allowing the coating die head 50 to... The slurry is applied to one side of the substrate. The aforementioned coating die head is positioned further downstream of the coating die head 50. After coating one side of the substrate is completed, it continues to be conveyed through the coating die head 50, with the coated surface facing down and the uncoated side facing up. The coating die head is positioned above the uncoated side, thereby conveying the slurry to the upper surface of the substrate through the coating channel 12, achieving the coating operation on the uncoated side. During this process, the roller 30 on the coating die head provides support and stability to the substrate, thus completing the double-sided coating process. The specific structure of the other coating die head 50 can directly adopt a conventional die head. Since the coating steel roller 60 on its other side supports the substrate, the coating stability and reliability can be guaranteed.

[0041] It should be noted that "multiple" in the above embodiments refers to at least two.

[0042] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0043] 1. Solved the problem of pressure loss in the die head of the existing double-sided coating machine;

[0044] 2. In vertical coating scenarios, the cavity is in a roughly horizontal state. The gravity of the slurry inside the cavity will not directly act on the coating channel, thus not affecting the accuracy of the coating thickness, and will not cause pressure loss due to gravity flowing out when coating stops.

[0045] 3. The size and number of coating channels can also be changed accordingly, thereby adjusting the slurry delivery rate and achieving adaptability to different coating processes;

[0046] 4. The rollers can support the substrate and stabilize it, effectively reducing the vibration of the substrate at the exit end of the coating channel, thereby improving the consistency and accuracy of the coating thickness.

[0047] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0048] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0049] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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 coating machine die head, characterized in that, include: The main body (10) has a cavity (11), a coating channel (12) and a feed channel (13). The cavity (11) is used to contain slurry. The inlet end of the coating channel (12) is connected to the top of the cavity (11) and the coating channel (12) extends longitudinally. The outlet end of the coating channel (12) is located at the bottom of the main body (10). The feed channel (13) is connected to the cavity (11) and is used to feed slurry into the cavity (11).

2. The coating machine die head according to claim 1, characterized in that, The main body (10) includes a plurality of side molds, which are connected to form the cavity (11) and the coating channel (12).

3. The coating machine die head according to claim 2, characterized in that, The plurality of side molds include a first side mold (14) and a second side mold (15), the second side mold (15) being located above the first side mold (14), the upper surface of the first side mold (14) having a downward recess that forms the cavity (11).

4. The coating machine die head according to claim 3, characterized in that, The plurality of side molds also include a third side mold (16) located on one side of the first side mold (14), and the third side mold (16) and the first side mold (14) are clearance-fitted to form at least a portion of the coating channel (12), the coating channel (12) extending to the upper surface of the first side mold (14) and communicating with the recess.

5. The coating machine die head according to claim 4, characterized in that, The coating machine die head also includes a gasket (20), which is disposed in the gap between the third side die (16) and the first side die (14). The gasket (20) has a hollow structure that forms at least part of the coating channel (12).

6. The coating machine die head according to claim 5, characterized in that, There are multiple gaskets (20), which are interchangeably disposed in the gap between the third side mold (16) and the first side mold (14). At least two of the gaskets (20) have different thicknesses and / or at least two of the gaskets (20) have different widths of their hollow structures.

7. The coating die head according to any one of claims 1 to 6, characterized in that, The coating machine die head also includes a guide roller (30), which is rotatably disposed at the bottom of the main body (10) and located on one side of the outlet end of the coating channel (12).

8. The coating machine die head according to claim 7, characterized in that, The bottom of the main body (10) has an upwardly recessed receiving portion, a portion of the roller (30) is disposed in the receiving portion, and a portion of the roller (30) protrudes from the receiving portion.

9. The coating machine die head according to claim 7, characterized in that, The roller (30) is longitudinally adjustable relative to the main body (10). The coating machine die head also includes an adjustment component (40), which is driven to connect with the roller (30) and drives the roller (30) to move longitudinally to adjust its position.

10. A coating machine, characterized in that, The coating machine die head includes any one of claims 1 to 9.

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