A primer applicator head mechanism and coating apparatus
By designing a base coating head mechanism to achieve simultaneous double-sided coating, the problems of low efficiency, large space requirements, and poor coating quality of single-sided coating machines are solved, thereby improving production efficiency and coating quality. This technology is suitable for the retrofitting of coating equipment in battery manufacturing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN GOLD SILVER RIVER INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-07-31
AI Technical Summary
Existing single-sided horizontal gravure coating machines suffer from low production efficiency, complex material handling, large equipment space requirements, and coating quality affected by the roller contact line. They also have difficulty achieving simultaneous double-sided coating and adjusting the coating thickness.
A primer coating head mechanism was designed, including a first-side and a second-side primer coating assembly. The primer coating roller rotates in opposite directions to contact the substrate, forming an adjustable wrap angle. It is arranged vertically to achieve simultaneous coating on both sides. The coating thickness is controlled by adjusting the wrap angle and speed. The back pressure roller is eliminated, and a closed material trough design is adopted to prevent slurry splashing.
It improves production efficiency, reduces equipment space occupation, ensures coating quality and thickness adjustment flexibility, simplifies material transfer, and is suitable for the transformation of existing production lines.
Smart Images
Figure CN224574028U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery manufacturing technology, and in particular to a primer coating head mechanism and coating equipment. Background Technology
[0002] In the field of modern battery coating machines, coating technology is one of the core steps in battery electrode production. During the positive electrode coating process, a layer of carbon powder is usually applied to the substrate beforehand to ensure the conductivity and structural stability of the electrode.
[0003] Traditional coating methods primarily rely on single-sided horizontal gravure coating technology. However, single-sided coating machines can only process one surface at a time, meaning that the second coating can only be applied after the first surface has dried and been rewound. This not only reduces production efficiency but also increases the complexity of material handling and the space occupied by the equipment.
[0004] Furthermore, existing single-sided horizontal gravure coating requires the transfer of slurry between the substrate and the primer roller under the action of a back pressure roller, which makes the substrate prone to defects such as indentations and wrinkles, and the coating quality is affected by the contact line between the two rollers; moreover, it is difficult to adjust the thickness of the primer.
[0005] The aforementioned problems are particularly prominent in large-scale production, limiting the capacity and cost-effectiveness of battery manufacturing.
[0006] Therefore, a solution is urgently needed to address the above problems. Utility Model Content
[0007] In view of this, the purpose of this application is to provide a base coating head mechanism and coating equipment to solve the problems of efficiency and equipment space occupation of existing single-sided coating machines, which in turn limit the production capacity and cost-effectiveness of battery manufacturing.
[0008] To achieve the above technical objectives, this application provides a primer coating head mechanism, including a main body, a first primer coating component, and a second primer coating component;
[0009] The first-side primer assembly is mounted on the main body of the mechanism, and its primer roller can rotate in opposite directions to contact the first side of the substrate and form an adjustable wrap angle;
[0010] The second-side primer assembly is mounted on the main body of the mechanism, and its primer roller can rotate in opposite directions to contact the second side of the substrate and form an adjustable wrap angle;
[0011] A coating feed zone is formed between the first surface primer assembly and the second surface primer assembly to allow the substrate to pass vertically.
[0012] Furthermore, both the first and second surface primer components include a material box, a primer roller, and a scraper.
[0013] The material box contains coating slurry, and one side of the material box has an opening;
[0014] A portion of the base coating roller extends into the material box through the opening and comes into contact with the coating slurry inside the material box;
[0015] The scraper is mounted on the opening and is used to scrape excess coating slurry from the base coating roller back into the material box.
[0016] The scraper is also used to close the gap between the opening and the primer roller;
[0017] The primer roller contacts the substrate and forms an adjustable wrap angle.
[0018] Furthermore, the first surface primer assembly and the second surface primer assembly are staggered in the vertical direction.
[0019] Furthermore, it also includes two primer drive modules;
[0020] The first and second base coating components are respectively connected to a base coating driving module and can move closer to or away from the substrate under the drive of the base coating driving module.
[0021] Furthermore, it also includes a primer drive module, a guide roller, and a guide drive module;
[0022] The guide roller, the first surface primer assembly, and the second surface primer assembly are arranged sequentially from bottom to top;
[0023] The first or second base coating component is connected to the base coating driving module and can move closer to or away from the substrate under the drive of the base coating driving module.
[0024] The guide roller is connected to the guide drive module and can move closer to or further away from the substrate under the drive of the guide drive module.
[0025] Furthermore, it also includes a traction component, installed on the main body of the mechanism, for traction of the base material.
[0026] This application also discloses coating equipment, including an unwinding mechanism, a corona treatment mechanism, the aforementioned primer head mechanism, a primer drying oven, and a coating mechanism;
[0027] The unwinding mechanism, corona treatment mechanism, primer head mechanism, primer drying oven, and coating mechanism are arranged in sequence.
[0028] Furthermore, the primer drying oven is located directly above the primer head mechanism and is used to dry the vertically conveyed substrate.
[0029] As can be seen from the above technical solutions, the primer head mechanism designed in this application has the following beneficial effects:
[0030] 1. The first and second primer components can achieve simultaneous double-sided primer coating, which can double the equipment production efficiency or reduce the equipment space by half. At the same time, the substrate does not need to be transferred, which makes it easy to modify the original coating production line without affecting the operation of the original equipment.
[0031] 2. The primer rollers of both the first and second primer components rotate in opposite directions to the substrate and form an adjustable wrap angle, so that the primer can be completed without the need for back pressure rollers. Moreover, the thickness of the primer can be adjusted by adjusting the wrap angle and the reverse rotation speed. This not only results in high coating quality but also makes it easy to adjust the thickness of the primer, thus improving the process adjustability.
[0032] 3. The first and second primer components are arranged vertically to enable vertical movement of the substrate and coating of both sides, effectively compressing the horizontal space and saving the workshop length occupied. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 This is a schematic diagram of the single-sided horizontal gravure coating mechanism provided in this application.
[0035] Figure 2 This is a schematic diagram of a primer coating head mechanism in the primer coating state provided in this application;
[0036] Figure 3 This is a schematic diagram of a primer coating head mechanism provided in this application in a non-primer coating state;
[0037] Figure 4 This is a schematic diagram of the structure of a coating device provided in this application;
[0038] Figure 2-4 In the middle: 1. Substrate; 2. Unwinding mechanism; 3. Corona treatment mechanism; 4. Primer head mechanism; 5. Primer oven; 6. Coating mechanism; 7. First layer platform; 8. Second layer platform; 10. Main body of the mechanism; 11. First primer assembly; 12. Second primer assembly; 13. Guide roller; 14. Traction assembly; 15. Primer roller; 16. Material box. Detailed Implementation
[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.
[0040] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0041] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0042] Through research, the applicant has discovered that existing single-sided horizontal gravure coating mechanisms, such as... Figure 1 As shown, the open material tank 400 is arranged horizontally. The gravure roller 300 scrapes off the excess paste by the scraper 500. Under the pressing action of the back pressure roller 200, the paste is transferred to the substrate 1100. The excess paste falls back into the material tank 400 due to its own gravity.
[0043] The above design has the following shortcomings:
[0044] 1. Because it is an open material tank, the slurry will inevitably splash out.
[0045] 2. Because the substrate 1 is pressed between the back pressure roller and the gravure roller, the substrate 1 is prone to defects such as indentations and wrinkles, and the coating quality is affected by the contact line between the two rollers, while the coating thickness is difficult to adjust.
[0046] 3. Only one side can be coated. The second side can only be coated and dried after the first side has been coated and the coating process can be repeated. Substrate 1 needs to be rolled up and transported. This results in problems such as low production efficiency, inconvenient material transportation, and large equipment space occupation.
[0047] To address at least some of the aforementioned technical problems, embodiments of this application disclose a primer coating head mechanism and coating equipment.
[0048] Please see Figure 2 An embodiment of a primer coating head mechanism and coating equipment provided in this application includes:
[0049] The main body of the structure 10, the first primer component 11, and the second primer component 12.
[0050] The first primer assembly 11 is mounted on the main body 10 of the mechanism, and its primer roller 15 can rotate in opposite directions to contact the first surface of the substrate 1 and form an adjustable wrap angle. Specifically, the first primer assembly 11 is mounted on the main body 10 of the mechanism. The primer roller 15 of this assembly can rotate in opposite directions to contact the first surface of the substrate 1, that is, the rotation direction of the primer roller 15 is opposite to the movement direction of the substrate 1, so that the material can be evenly coated on the first surface of the substrate 1. At the same time, the wrap angle formed by this contact is adjustable. The wrap angle refers to the angle between a point on the primer roller 15 and the contact point on the substrate 1 and the line connecting that point and the axis of the primer roller 15 when the primer roller 15 contacts the substrate 1. Adjusting the wrap angle can change the amount and uniformity of the coating.
[0051] The second-side primer assembly 12 is mounted on the main body 10 of the mechanism, and its primer roller 15 can rotate in opposite directions to contact the second side of the substrate 1 and form an adjustable wrap angle. Specifically, the second-side primer assembly 12 can rotate in opposite directions to contact the second side of the substrate 1 and can also form an adjustable wrap angle. The function of this assembly is similar to that of the first-side primer assembly 11, except that it operates on the other side of the substrate 1, which will not be described in detail.
[0052] A coating feed zone is formed between the first primer assembly 11 and the second primer assembly 12, allowing the substrate 1 to pass vertically through.
[0053] The primer head mechanism designed in this application has the following significant advantages:
[0054] 1. Through the coordinated operation of the first primer coating assembly 11 and the second primer coating assembly 12, simultaneous double-sided primer coating of the substrate 1 is achieved. This design not only doubles the production efficiency of the equipment but also significantly reduces the space occupied by the equipment. At the same time, since the substrate 1 does not need to be transferred, it can be easily modified on the existing coating production line without affecting the normal operation and use of the original equipment.
[0055] 2. In this design, the primer rollers 15 of both the first primer assembly 11 and the second primer assembly 12 rotate in opposite directions to the substrate 1, forming an adjustable wrap angle. This design eliminates the need for an additional back-pressure roller. Furthermore, the thickness of the primer can be easily controlled by adjusting the wrap angle and the reverse rotation speed. This design not only ensures high coating quality but also makes adjusting the primer thickness easier, thus providing better process adjustability.
[0056] 3. The design of this primer coating head mechanism also adopts a vertical arrangement of the first primer coating component 11 and the second primer coating component 12. This allows the substrate 1 to move vertically and enables coating on both sides of the substrate 1. This design effectively compresses the space required laterally, thereby saving workshop length and making the equipment occupy a more compact space.
[0057] The above is Embodiment 1 of a primer coating head mechanism provided in this application. The following is Embodiment 2 of a primer coating head mechanism provided in this application. Please refer to the following for details. Figures 2 to 3 .
[0058] Based on the solution of Embodiment 1 above:
[0059] Furthermore, both the first primer assembly 11 and the second primer assembly 12 include a material box 16, a primer roller 15, and a doctor blade (not shown in the figure); wherein, the primer roller 15 is a micro-recessed coating roller.
[0060] The material box 16 stores coating slurry, and one side of the material box 16 has an opening; part of the primer roller 15 extends into the material box 16 through the opening and comes into contact with the coating slurry in the material box 16; a scraper is installed on the opening to scrape excess coating slurry on the primer roller 15 back into the material box 16 (which helps to ensure the uniform distribution of coating slurry on the primer roller 15 and further improves the coating quality); the scraper is also used to close the gap between the opening and the primer roller 15 to achieve a closed design, effectively solving the problem of slurry splashing in the traditional open material box design.
[0061] The primer roller 15 contacts the substrate 1 and forms an adjustable wrap angle. The means of adjusting the wrap angle include, but are not limited to, the following:
[0062] 1. Adjust the position of the primer roller 15
[0063] By adjusting the relative position between the primer roller 15 and the substrate 1, the contact point between the primer roller 15 and the substrate 1 can be changed, thereby adjusting the wrap angle. This can usually be done by mechanical means or manual operation.
[0064] II. An adjustable support structure is adopted.
[0065] To more precisely control the size of the wrap angle, adjustable support structures can be provided on one or both sides of the primer roller 15. These support structures can be raised, lowered, or tilted as needed, thereby changing the contact angle and the size of the wrap angle between the primer roller 15 and the substrate 1.
[0066] In practical applications, it is necessary to select appropriate adjustment methods based on specific needs and equipment conditions in order to achieve the best wrap angle adjustment effect.
[0067] Furthermore, the first primer component 11 and the second primer component 12 are staggered in the vertical direction.
[0068] This staggered design makes the primer coating head mechanism more compact, further saving space. Meanwhile, since the first primer coating assembly 11 and the second primer coating assembly 12 coat two sides of the substrate 1 respectively, this staggered distribution does not affect the coating effect. In practical applications, the position and angle of the first primer coating assembly 11 and the second primer coating assembly 12 can be flexibly adjusted according to the specific layout of the production line and equipment conditions to achieve the best coating effect and production efficiency.
[0069] Furthermore, it also includes two primer driving modules; the first primer assembly 11 and the second primer assembly 12 are each connected to a primer driving module, and can move closer to or further away from the substrate 1 under the drive of the primer driving module. Specifically, the primer driving module can be a displacement driving module such as a cylinder, which is specifically connected to the primer roller 15, driving the primer roller 15 to extend (closer to the substrate 1) / retract (away from the substrate 1).
[0070] This design enables the first primer assembly 11 and the second primer assembly 12 to move close to the substrate 1 to contact the first and second surfaces of the substrate 1 respectively, achieving the following: Figure 2 The substrate is shown in the base coat state; it can also achieve the movement of the first base coat assembly 11 and the second base coat assembly 12 away from the substrate 1, such as... Figure 3 The result is a non-primer coating state (not in contact with substrate 1, and does not affect the operation of other equipment on the overall production line).
[0071] Furthermore, it may also include a primer driving module, a guide roller 13, and a guide driving module (not shown in the figure); the guide roller 13, the first primer component 11, and the second primer component 12 are arranged sequentially from bottom to top; the first primer component 11 or the second primer component 12 is connected to the primer driving module and can move closer to or away from the substrate 1 under the drive of the primer driving module; the guide roller 13 is connected to the guide driving module and can move closer to or away from the substrate 1 under the drive of the guide driving module.
[0072] In this design, by replacing the other primer drive module with guide roller 13 and guide drive module, the free switching between primer state and non-primer state can also be realized. Those skilled in the art can make changes according to actual needs without restriction.
[0073] Furthermore, it also includes a traction assembly 14, which is installed on the main body 10 of the mechanism and is used to traction the base material 1.
[0074] The design of the traction assembly 14 ensures the stable operation of the substrate 1 during the coating process. The substrate 1 is pulled from one end to the other, allowing it to pass through the primer head mechanism for coating. The speed and tension of the traction assembly 14 can be adjusted according to the requirements of the coating process to ensure that the substrate 1 remains flat and stable during coating, thereby improving coating quality.
[0075] like Figure 4 As shown, this application also discloses a coating device, including an unwinding mechanism 2, a corona treatment mechanism 3, a primer head mechanism 4, a primer oven 5, and a coating mechanism 6; the unwinding mechanism 2, the corona treatment mechanism 3, the primer head mechanism, the primer oven 5, and the coating mechanism 6 are arranged sequentially.
[0076] Specifically, substrate 1 is unwound by unwinding mechanism 2, then enters corona treatment mechanism 3 for corona treatment, then enters primer head mechanism 4 to move vertically upward and perform double-sided primer coating, then enters primer oven 5 for drying, and after drying, enters subsequent coating mechanism 6 for coating.
[0077] Furthermore, the primer drying oven 5 is positioned directly above the primer head mechanism 4 to dry the vertically conveyed substrate 1. Both the primer head mechanism 4 and the primer drying oven 5 adopt a vertical conveyor design, which greatly saves the workshop length occupied by the equipment.
[0078] In the specific arrangement, the unwinding mechanism 2, the corona mechanism 3, and the primer head mechanism 4 can be arranged on the first-floor platform 7, while the primer oven 5 and the coating mechanism 6 can be arranged on the second-floor platform 8.
[0079] The above provides a detailed description of the primer head mechanism and coating equipment provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A base coater head mechanism characterized by, It includes the main body of the structure (10), the first primer component (11), and the second primer component (12). The first surface primer assembly (11) is mounted on the main body of the mechanism (10), and its primer roller (15) can rotate in opposite directions to contact the first surface of the substrate (1) and form an adjustable wrap angle; The second-side primer assembly (12) is mounted on the main body (10) of the mechanism, and its primer roller (15) can rotate in opposite directions to contact the second side of the substrate (1) and form an adjustable wrap angle; A coating feed area is formed between the first surface primer assembly (11) and the second surface primer assembly (12) for the substrate (1) to pass through vertically; Both the first surface primer assembly (11) and the second surface primer assembly (12) include a material box (16), a primer roller (15), and a scraper; The material box (16) contains coating slurry, and one side of the material box (16) has an opening; Part of the base coat roller (15) extends into the material box (16) through the opening and comes into contact with the coating slurry in the material box (16); The scraper is mounted on the opening and is used to scrape excess coating slurry on the base coating roller (15) back into the material box (16). The scraper is also used to close the gap between the opening and the primer roller (15); The primer roller (15) contacts the substrate (1) and forms an adjustable wrap angle.
2. The undercoater head mechanism according to claim 1, wherein The first surface primer component (11) and the second surface primer component (12) are staggered in the vertical direction.
3. The undercoater head mechanism according to claim 2, wherein It also includes two primer drive modules; The first surface base coating assembly (11) and the second surface base coating assembly (12) are respectively connected to a base coating driving module, and can move closer to or further away from the substrate (1) under the drive of the base coating driving module.
4. The primer coating head mechanism according to claim 2, characterized in that, It also includes a base coat drive module, a guide roller (13), and a guide drive module; The guide roller (13), the first surface primer assembly (11), and the second surface primer assembly (12) are arranged sequentially from bottom to top; The first surface primer assembly (11) or the second surface primer assembly (12) is connected to the primer driving module and can move closer to or further away from the substrate (1) under the drive of the primer driving module; The guide roller (13) is connected to the guide drive module and can move closer to or further away from the substrate (1) under the drive of the guide drive module.
5. The primer coating head mechanism according to claim 1, characterized in that, It also includes a traction component (14), which is installed on the main body of the mechanism (10) and is used to traction the base material (1).
6. A coating equipment, characterized in that, It includes an unwinding mechanism (2), a corona treatment mechanism (3), a primer head mechanism (4) as described in any one of claims 1 to 5, a primer drying oven (5), and a coating mechanism (6); The unwinding mechanism (2), the corona treatment mechanism (3), the primer head mechanism (4), the primer drying oven (5), and the coating mechanism (6) are arranged in sequence.
7. The coating equipment according to claim 6, characterized in that, The primer drying oven (5) is located directly above the primer head mechanism (4) and is used to dry the vertically conveyed substrate (1).