Die head of coating machine

Abstract

The utility model provides a die head of a coating machine. The coating machine die head comprises a first coating die head and a second coating die head which are superposed, wherein the first coating die head is provided with a first slurry feeding runner; the gasket and the bottom of the first coating die head form a second slurry feeding flow channel, the discharging end of the first slurry feeding flow channel is communicated with the feeding end of the second slurry feeding flow channel, and the first slurry feeding flow channel is inclined by a preset angle relative to the second slurry feeding flow channel; and the flow adjusting mechanism comprises an electric driving structure and a flow adjusting structure, and the electric driving structure is used for driving the flow adjusting structure to move in the direction close to or away from the second coating die head. According to the technical scheme provided by the utility model, the problem that the coating uniformity and quality are influenced as the turbulence phenomenon is easy to occur during feeding of the existing coating die head can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium-ion battery electrode coating equipment, and more specifically, to a coating machine die head. Background Technology

[0002] In the manufacturing process of lithium-ion batteries, the electrode coating process is a crucial step, directly affecting the battery's performance and safety. The coating process involves uniformly applying a slurry containing active materials onto a metal or plastic substrate to form the positive and negative electrodes of the battery. To improve battery performance, the edges of the electrodes require special treatment, such as coating with ceramic materials, to enhance their mechanical strength and protect them from electrolyte corrosion.

[0003] However, the existing coating die head has a vertically positioned feed channel. While this design is simple, it has some limitations in the actual coating process. When the slurry flows vertically, it is easily affected by gravity, resulting in a high flow velocity and thus inducing turbulence. Turbulence not only leads to uneven distribution of active substances in the slurry but can also entrain air into the slurry, forming bubbles. The presence of these bubbles will seriously affect the uniformity and quality of the coating. Utility Model Content

[0004] The main purpose of this invention is to provide a coating machine die head that can solve the problem that turbulence easily occurs during the feeding of existing coating dies, affecting the uniformity and quality of coating.

[0005] To achieve the above objectives, this utility model provides a coating machine die head, comprising: a first coating die head and a second coating die head stacked together, the first coating die head being provided with a first slurry feed channel; a gasket, the gasket forming a second slurry feed channel with the bottom of the first coating die head, the outlet end of the first slurry feed channel communicating with the inlet end of the second slurry feed channel, and the first slurry feed channel being inclined at a preset angle relative to the second slurry feed channel; and a flow regulation mechanism, comprising an electric drive structure and a flow regulation structure, the flow regulation structure being located at the outlet end of the second slurry feed channel, and the electric drive structure being used to drive the flow regulation structure to move in a direction closer to or further away from the second coating die head.

[0006] The above settings allow for the alteration of the slurry flow rate from the outlet of the second slurry feed channel without manual adjustment. Automatic adjustment via an electrically driven structure enables precise flow rate control, unaffected by operator skill levels, ensuring optimal adjustment. Furthermore, the first slurry feed channel is tilted at a preset angle relative to the second slurry feed channel. Compared to existing technologies where slurry flows vertically, this results in a smoother slurry flow, reducing turbulence and air entrainment during flow, thereby improving coating quality and uniformity.

[0007] Furthermore, the preset angle ranges from 100° to 120°.

[0008] With the above settings, the slurry feed rate can be guaranteed without generating turbulence when the slurry enters the second slurry feed channel.

[0009] Furthermore, there are multiple second slurry feed channels, multiple first slurry feed channels, and multiple flow regulation mechanisms. The multiple second slurry feed channels are arranged in a one-to-one correspondence with the multiple first slurry feed channels, and the multiple flow regulation mechanisms are arranged in a one-to-one correspondence with the multiple second slurry feed channels. The coating die head also includes multiple switching valves, which are installed on the first coating die head. The multiple switching valves are arranged in a one-to-one correspondence with the multiple first slurry feed channels, and the discharge end of each switching valve is connected to the feed end of the corresponding first slurry feed channel.

[0010] The above settings can improve coating efficiency.

[0011] Furthermore, there are multiple second slurry feed channels, multiple first slurry feed channels, and multiple flow adjustment mechanisms. The multiple second slurry feed channels are arranged in a one-to-one correspondence with the multiple first slurry feed channels. The multiple flow adjustment mechanisms are arranged in a one-to-one correspondence with the multiple second slurry feed channels. The bottom of the first coating die head is provided with multiple grooves. The gasket and the multiple grooves together form multiple second slurry feed channels.

[0012] The above setup not only creates multiple second slurry feed channels but also improves coating efficiency.

[0013] Furthermore, the flow regulating mechanism also includes a telescopic structure, which is driven by the electric drive structure, and the telescopic end of the telescopic structure is connected to the flow regulating structure.

[0014] With the above settings, the flow adjustment structure can be moved in the direction of approaching or moving away from the second coating die head, thereby adjusting the slurry flow rate.

[0015] Furthermore, the electric drive structure also includes a drive motor, the telescopic structure includes a telescopic rod, the drive motor is connected to the telescopic rod, the telescopic end of the telescopic rod is connected to the flow regulating structure, and the telescopic rod is located at the discharge end of the second slurry feed channel.

[0016] With the above settings, the flow adjustment structure can be moved in the direction of approaching or moving away from the second coating die head, thereby adjusting the slurry flow rate.

[0017] Furthermore, the electric drive structure also includes a connecting structure, one end of which is connected to the telescopic rod, and the other end of which is connected to the flow regulating structure.

[0018] The above settings enable the connection between the telescopic rod and the adjustment structure.

[0019] Furthermore, the outer peripheral surface of the flow regulating structure is configured to be compatible with the discharge end of the second slurry feed channel.

[0020] The above settings ensure effective slurry blocking and enable precise control of slurry flow.

[0021] Furthermore, the flow regulating mechanism also includes a sealing structure. A guide channel is provided on the first coating die head. The flow regulating structure passes through the guide channel, and the sealing structure is sleeved on the flow regulating structure to seal the gap between the flow regulating structure and the guide channel.

[0022] The above settings not only guide the flow regulation structure but also seal the gap between the flow regulation structure and the guide channel, preventing air from entering the slurry through the gap between them.

[0023] Furthermore, the flow regulating mechanism also includes a mounting base, which is mounted on the first coating die head. The mounting base has a mounting cavity, an electric drive structure is mounted on the mounting base, and part of the flow regulating structure is located inside the mounting cavity.

[0024] The above setup enables the installation of an electric drive structure.

[0025] The present invention comprises a first coating die, a second coating die, a gasket, and a flow regulating mechanism. The flow regulating mechanism can change the flow rate of the slurry exiting from the outlet end of the second slurry inlet channel without manual adjustment. Automatic adjustment is achieved through an electrically driven structure, enabling precise flow rate control unaffected by operator skill levels and ensuring optimal adjustment results. Furthermore, the first slurry inlet channel is inclined at a preset angle relative to the second slurry inlet channel. Compared to the vertical flow of slurry in existing technologies, this results in a smoother slurry flow, reducing turbulence and air entrainment during flow, thereby improving coating quality and uniformity. Attached Figure Description

[0026] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof.

[0027] In the picture:

[0028] Figure 1 A schematic diagram of the coating machine die head according to an embodiment of the present invention is shown;

[0029] Figure 2 A cross-sectional view of the coating machine die head according to an embodiment of the present invention is shown;

[0030] Figure 3 A schematic diagram of the flow regulating mechanism according to an embodiment of the present invention is shown;

[0031] Figure 4 A schematic diagram of the structure of the first coating die head according to an embodiment of the present invention is shown;

[0032] Figure 5 A cross-sectional view of a first coating die head according to an embodiment of the present invention is shown.

[0033] The above figures include the following reference numerals:

[0034] 10. First coating die head; 11. Groove; 12. Guide channel; 20. Second coating die head; 30. Second slurry feed channel; 40. Flow regulating mechanism; 41. Flow regulating structure; 42. Drive motor; 43. Telescopic rod; 44. Connecting structure; 45. Mounting base; 451. Mounting cavity; 50. First slurry feed channel; 60. Switch valve; 70. Sealing structure; 80. Gasket. Detailed Implementation

[0035] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] See also Figures 1 to 5 As shown, this utility model provides a coating machine die head, which includes a first coating die head 10 and a second coating die head 20 stacked together. The first coating die head 10 is provided with a first slurry feed channel 50; a gasket 80, the gasket 80 and the bottom of the first coating die head 10 forming a second slurry feed channel 30, the discharge end of the first slurry feed channel 50 is connected to the feed end of the second slurry feed channel 30, and the first slurry feed channel 50 is inclined at a preset angle relative to the second slurry feed channel 30; a flow rate adjustment mechanism 40, including an electric drive structure and a flow rate adjustment structure 41, the flow rate adjustment structure 41 is located at the discharge end of the second slurry feed channel 30, and the electric drive structure is used to drive the flow rate adjustment structure 41 to move in a direction close to or away from the second coating die head 20.

[0037] In this embodiment, the flow regulating structure 41 is installed on the first coating die 10. There is a gap between the first coating die 10 and the second coating die 20, the height of which is the thickness of the gasket 80. The gasket 80 is placed on the upper surface of the second coating die 20. The top surface of the gasket 80 and the bottom surface of the first coating die 10 together form the second slurry inlet channel 30 and the slurry outlet channel. The outlet end of the second slurry inlet channel 30 is connected to the slurry outlet channel. When coating the electrode, the slurry (e.g., ceramic) enters from the inlet end of the first slurry inlet channel 50, then flows out from the outlet end of the first slurry inlet channel 50 and flows into the second slurry inlet channel 30 from the inlet end of the second slurry inlet channel 30. Then it flows out from the outlet end of the second slurry inlet channel 30 and enters the slurry outlet channel, and finally is discharged from the outlet end of the slurry outlet channel to achieve the coating of the electrode.

[0038] The flow regulation structure 41 can block the slurry. During the coating process, the flow regulation structure 41 is driven by an electric drive structure to move towards or away from the second coating die head 20, which can change the blocking area of ​​the flow regulation structure 41 at the outlet end of the second slurry inlet channel 30, thereby changing the flow rate of the slurry flowing out from the outlet end of the second slurry inlet channel 30. The flow regulation mechanism 40 of this application does not require manual operation for adjustment. It achieves automatic adjustment through an electric drive structure, which can achieve precise flow rate adjustment and is not affected by the skill level of the personnel, thus ensuring the adjustment effect. In addition, the first slurry feed channel 50 is inclined at a preset angle relative to the second slurry feed channel 30. When coating is performed using the coating machine die head of this application, the slurry enters from the feed end of the first slurry feed channel 50 and flows slowly and obliquely along the inner wall of the first slurry feed channel 50. Compared with the slurry of the prior art flowing in the vertical direction, the slurry flows more smoothly, which can reduce the generation of turbulence and also help reduce the air entrainment of the slurry during the flow process, thereby improving the coating quality and uniformity.

[0039] It should be noted that the flow regulating mechanism 40 of this application can achieve precise electric regulation of the slurry flow rate. Compared with traditional coating dies, this application achieves electric regulation of the slurry flow rate, and the regulation amount is quantifiable.

[0040] In one embodiment, the electric drive structure is an electric push rod.

[0041] See also Figures 1 to 5 As shown, in one embodiment of this utility model, the preset angle ranges from 100° to 120°.

[0042] With the above settings, the slurry feeding rate can be guaranteed without generating turbulence when the slurry enters the second slurry feed channel 30.

[0043] See also Figures 1 to 5 As shown, in one embodiment of this utility model, there are multiple second slurry feed channels 30, multiple first slurry feed channels 50, and multiple flow regulating mechanisms 40. The multiple second slurry feed channels 30 and multiple first slurry feed channels 50 are arranged in a one-to-one correspondence, and the multiple flow regulating mechanisms 40 and multiple second slurry feed channels 30 are arranged in a one-to-one correspondence. The coating die head also includes multiple switching valves 60. The switching valves 60 are installed on the first coating die head 10. The multiple switching valves 60 are arranged in a one-to-one correspondence with the multiple first slurry feed channels 50, and the discharge end of each switching valve 60 is connected to the feed end of the corresponding first slurry feed channel 50.

[0044] In this embodiment, the feed end of the switching valve 60 is used to connect to the feeding device, and the switching valve 60 can control the opening and closing of the feeding device and the first slurry feed channel 50. Each end of the second slurry feed channel 30 is respectively provided with a flow regulating mechanism 40 and a first slurry feed channel 50, and each first slurry feed channel 50 is provided with a corresponding switching valve 60. There are multiple second slurry feed channels 30, first slurry feed channels 50, and flow regulating mechanisms 40; this arrangement can improve coating efficiency.

[0045] See also Figures 1 to 5 As shown, in one embodiment of the present invention, there are multiple second slurry feed channels 30, multiple first slurry feed channels 50, and multiple flow adjustment mechanisms 40. The multiple second slurry feed channels 30 and the multiple first slurry feed channels 50 are arranged in a one-to-one correspondence, and the multiple flow adjustment mechanisms 40 and the multiple second slurry feed channels 30 are arranged in a one-to-one correspondence. The bottom of the first coating die head 10 is provided with multiple grooves 11, and the gasket 80 and the multiple grooves 11 together form multiple second slurry feed channels 30.

[0046] In this embodiment, the multiple grooves 11 are independent of each other, and the gasket 80 and the multiple grooves 11 respectively form multiple second slurry feed channels 30. The gasket 80 and one groove 11 can form one second slurry feed channel 30. Each second slurry feed channel 30, except for its inlet and outlet ends, is not directly connected to the outside. Through the above arrangement, multiple second slurry feed channels 30 can be formed, and coating efficiency can be improved.

[0047] See also Figures 1 to 5 As shown, in one embodiment of the present invention, the flow regulating mechanism 40 further includes a telescopic structure, which is driven by the electric drive structure, and the telescopic end of the telescopic structure is connected to the flow regulating structure 41.

[0048] In this embodiment, the electric drive structure is used to drive the extension and retraction of the telescopic structure. Since the extension and retraction end of the telescopic structure is connected to the flow regulation structure 41, the flow regulation structure 41 can move in a direction closer to or further away from the second coating die head 20, thereby achieving the regulation of the slurry flow rate.

[0049] See also Figures 1 to 5 As shown, in one embodiment of the present invention, the electric drive structure further includes a drive motor 42, and the telescopic structure includes a telescopic rod 43. The drive motor 42 is driven to connect with the telescopic rod 43, and the telescopic end of the telescopic rod 43 is connected to the flow regulating structure 41. The telescopic rod 43 is located at the discharge end of the second slurry feed channel 30.

[0050] In this embodiment, the drive motor 42 can drive the telescopic rod 43 to extend and retract. Since the telescopic end of the telescopic rod 43 is connected to the flow regulating structure 41, the flow regulating structure 41 can move in a direction closer to or further away from the second coating die head 20, thereby achieving the regulation of the slurry flow rate.

[0051] It should be noted that the drive motor 42 has a built-in lead screw mechanism, which can convert the rotational motion of the drive motor 42 into the linear motion of the telescopic rod 43. The lead screw mechanism can adopt the structure of existing technology, which will not be described in detail here.

[0052] See also Figures 1 to 5 As shown, in one embodiment of the present invention, the electric drive structure further includes a connecting structure 44, one end of which is connected to the telescopic rod 43, and the other end of which is connected to the flow regulating structure 41.

[0053] The above settings enable the connection between the telescopic rod 43 and the flow regulation structure 41.

[0054] In one embodiment, the connecting structure 44 is a coupling.

[0055] In one embodiment of the present invention, the outer peripheral surface of the flow regulating structure 41 is configured to be compatible with the discharge end of the second slurry feed channel 30.

[0056] In this embodiment, the outer peripheral surface of the flow regulating structure 41 is adapted to the end face of the discharge end of the second slurry feed channel 30, which can ensure the blocking effect on the slurry and realize precise control of the slurry flow rate.

[0057] See also Figures 1 to 5As shown, in one embodiment of the present invention, the flow regulating mechanism 40 further includes a sealing structure 70, and a guide channel 12 is provided on the first coating die head 10. The flow regulating structure 41 passes through the guide channel 12, and the sealing structure 70 is sleeved on the flow regulating structure 41 to seal the gap between the flow regulating structure 41 and the guide channel 12.

[0058] The above settings can both guide the flow regulation structure 41 and seal the gap between the flow regulation structure 41 and the guide channel 12, preventing air from entering the slurry through the gap between them.

[0059] See also Figures 1 to 5 As shown, in one embodiment of this utility model, the sealing structure 70 is a sealing ring, and there are two sealing rings. The two sealing rings are spaced apart along the length direction of the flow regulating structure 41, which can achieve double sealing and better sealing effect.

[0060] In one embodiment, the cross-section of the flow regulating structure 41 can be rectangular, circular, rhomboid, etc.

[0061] In one embodiment, the flow regulating structure 41 is a round rod.

[0062] See also Figures 1 to 5 As shown, in one embodiment of the present invention, the flow regulating mechanism 40 further includes a mounting base 45, which is mounted on the first coating die head 10. The mounting base 45 has a mounting cavity 451, an electric drive structure is mounted on the mounting base 45, and a portion of the flow regulating structure 41 is located within the mounting cavity 451.

[0063] In this embodiment, the mounting base 45 is fixedly mounted on the first coating die 10 with screws, the electric drive structure is fixedly mounted on the mounting base 45 with screws, and the end portion of the flow regulating structure 41 away from the second coating die 20 passes through the mounting cavity 451. With the above arrangement, the electric drive structure can be installed.

[0064] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects: The invention includes a first coating die, a second coating die, a gasket, and a flow rate adjustment mechanism. This mechanism can change the flow rate of the slurry flowing from the outlet end of the second slurry feed channel without manual adjustment. Automatic adjustment is achieved through an electric drive structure, enabling precise flow rate control unaffected by operator skill levels and ensuring optimal adjustment. Furthermore, the first slurry feed channel is inclined at a preset angle relative to the second slurry feed channel. Compared to the vertical flow of slurry in existing technologies, this results in a smoother slurry flow, reducing turbulence and air entrainment during flow, thereby improving coating quality and uniformity.

[0065] 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.

[0066] 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.

[0067] 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 coater die characterized by, The application relates to a coating machine head. The application relates to a coating machine head. The preset angle ranges from 100 to 120 degrees. The second slurry feeding flow channel (30), the first slurry feeding flow channel (50) and the flow adjusting mechanism (40) are multiple, the multiple second slurry feeding flow channels (30) and the multiple first slurry feeding flow channels (50) are one-to-one correspondingly arranged, the multiple flow adjusting mechanisms (40) and the multiple second slurry feeding flow channels (30) are one-to-one correspondingly arranged, and the coating machine head further comprises multiple switch valves (60) which are installed on the first coating die (10), the multiple switch valves (60) are one-to-one correspondingly arranged with the multiple first slurry feeding flow channels (50), and the discharge end of each switch valve (60) is communicated with the feeding end of the corresponding first slurry feeding flow channel (50).

2. The coater die of claim 1, wherein The second slurry feeding flow channel (30), the first slurry feeding flow channel (50) and the flow adjusting mechanism (40) are multiple, the multiple second slurry feeding flow channels (30) and the multiple first slurry feeding flow channels (50) are one-to-one correspondingly arranged, the multiple flow adjusting mechanisms (40) and the multiple second slurry feeding flow channels (30) are one-to-one correspondingly arranged, the bottom of the first coating die (10) is provided with multiple grooves (11), and the multiple grooves (11) and the gasket (80) jointly form the multiple second slurry feeding flow channels (30).

3. The coater die of claim 1, wherein The flow adjusting mechanism (40) further comprises a telescopic structure which is drivingly connected with the electric driving structure, and the telescopic end of the telescopic structure is connected with the flow adjusting structure (41).

4. The coater die of claim 1, wherein The electric driving structure further comprises a driving motor (42), the telescopic structure comprises a telescopic rod (43), the driving motor (42) is drivingly connected with the telescopic rod (43), the telescopic end of the telescopic rod (43) is connected with the flow adjusting structure (41), and the telescopic rod (43) is located at the discharge end of the second slurry feeding flow channel (30).

5. The coater die of any one of claims 1 to 4, wherein ​ 6. The coater die of claim 5, wherein ​ 7. The coater die of claim 6, wherein The electric drive structure further comprises a connecting structure (44), one end of the connecting structure (44) is connected with the telescopic rod (43), and the other end of the connecting structure (44) is connected with the flow adjusting structure (41).

8. The coater die of any one of claims 1 to 4, wherein An outer peripheral surface of the flow adjusting structure (41) is configured to be adapted to a discharge end of the second slurry feeding flow channel (30).

9. The coater die of any one of claims 1 to 4, wherein, The flow adjusting mechanism (40) further comprises a sealing structure (70), the first coating die (10) is further provided with a guide channel (12), the flow adjusting structure (41) is arranged in the guide channel (12), and the sealing structure (70) is sleeved on the flow adjusting structure (41) to seal a gap between the flow adjusting structure (41) and the guide channel (12).

10. The coater die of any one of claims 1 to 4, wherein The flow adjusting mechanism (40) further comprises a mounting seat (45), the mounting seat (45) is mounted on the first coating die (10), the mounting seat (45) has a mounting cavity (451), and the electric drive structure is mounted on the mounting seat (45), and part of the flow adjusting structure (41) is located in the mounting cavity (451).

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