Universal lithium battery roll extrusion coater

Abstract

This invention relates to the field of lithium battery roll manufacturing equipment technology, specifically to a general-purpose lithium battery roll extrusion coating machine. It includes an extrusion pump coating delivery device, a servo unwinding system, a web guiding system, and an extrusion coating module for adaptively adjusting the control parameters of the coating process according to the specifications of the lithium battery strip, and completing the coating process of the lithium battery roll. The extrusion coating module has an adjustable movable dispensing coating section and a coating station for coating operations. During the coating process, the movable dispensing coating section of the extrusion coating module coats the lithium battery strip within the coating station according to the adaptively adjusted control parameters. This invention allows the extrusion coating module to automatically adjust control parameters according to different specifications of lithium battery strips. Simultaneously, the adjustable movable dispensing coating section of the extrusion coating module can adapt to different coating patterns and edge coating requirements, improving the accuracy and consistency of the coating process.

Description

Technical Field

[0001] This invention relates to the field of lithium battery roll manufacturing equipment technology, specifically to a general-purpose lithium battery roll extrusion coating machine. Background Technology

[0002] Coating machines are widely used in many industries, such as electronics, packaging, and building materials, to evenly apply adhesive to substrates for bonding and protection. However, existing coating machine dies have significant shortcomings. Firstly, the width of the adhesive outlet is fixed and cannot be adjusted, making it difficult for current coating machines to quickly adapt to different coating width requirements. When coating substrates of different widths or shapes, traditional dies cannot be flexibly adjusted. Different widths of spacers are required when coating different models, necessitating the production of numerous spacers for battery manufacturers with many models. This not only results in long production cycles but also high costs and low production efficiency. Secondly, due to the adhesive... When the die is working, the pressure of the glue entering the die is relatively high, which can easily lead to unstable pressure at the glue outlet. This not only causes unstable glue dispensing at the outlet, but also makes it difficult to maintain a consistent glue dispensing volume throughout the outlet, thus seriously affecting the coating quality and increasing the product defect rate. At the same time, existing extrusion coating machines can only perform continuous coating and cannot achieve intermittent coating according to the process standard requirements. This means that the later process of lithium-ion battery production must perform a powder scraping operation, that is, scraping off the electrode powder at the coating gap required by the process standard. This is wasteful of raw materials and labor, and is extremely inconvenient to use, making it unsuitable for current lithium battery production. Summary of the Invention

[0003] The technical problem to be solved by this invention is that existing coating machines have certain limitations. When it is necessary to coat substrates of different widths or shapes, traditional die heads cannot be flexibly adjusted and shims of different widths are required, resulting in low production efficiency. At the same time, the coating pressure is not easy to control during the coating process, which leads to unstable glue dispensing from the glue outlet and the inability to achieve intermittent coating. This makes them extremely inconvenient to use and unsuitable for current lithium battery production.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a general-purpose lithium battery roll extrusion coating machine, comprising:

[0005] A squeeze pump coating delivery device for storing and supplying coatings;

[0006] A servo unwinding system is used to install lithium battery rolls and unwind them according to preset control parameters.

[0007] The alignment correction system is used to dynamically correct the alignment based on the real-time position of the lithium battery strip.

[0008] The extrusion coating module is used to adapt the control parameters of the coating process to the specifications of the lithium battery strip and to complete the coating process of the lithium battery roll.

[0009] The correction part of the correction system is arranged at the lithium battery strip output end of the servo unwinding system. The lithium battery strip feeding end of the extrusion coating module is connected to the lithium battery strip output end of the servo unwinding system. The paint feeding end of the extrusion coating module is connected to the paint output end of the extrusion pump paint conveying device. The extrusion coating module is provided with a position-adjustable movable dispensing coating part and a coating station for coating work. When the movable dispensing coating part of the extrusion coating module performs coating work on the lithium battery strip in the coating station according to the adaptively adjusted control parameters.

[0010] When this invention is in operation, it can realize a series of tasks such as automatic feeding of lithium battery rolls, automatic supply of coating, dynamic correction of lithium battery strip, adaptive adjustment of coating position, pressure and area, and automatic coating. It has a high degree of automation and intelligence. Through the extrusion coating module, the control parameters can be automatically adjusted according to different specifications of lithium battery strips, and it is applicable to various types of strips, reducing the time for changing pads and improving production efficiency. At the same time, the movable dispensing coating part of the extrusion coating module with adjustable position can adapt to different coating patterns and edge coating requirements, which can improve the accuracy and consistency of coating work and has high working stability during continuous production.

[0011] Preferably, the extrusion pump coating delivery device includes a coating stirring mechanism for uniformly mixing the coating, a first extrusion pump delivery mechanism, a pressure transmitter, and a second extrusion pump delivery mechanism. The input end of the first extrusion pump delivery mechanism is connected to the output end of the coating stirring mechanism, the input end of the second extrusion pump delivery mechanism is connected to the output end of the first extrusion pump delivery mechanism, and the output end of the second extrusion pump delivery mechanism is connected to the coating feed end of the extrusion coating module. The pressure transmitter is arranged between the output end of the first extrusion pump delivery mechanism and the input end of the second extrusion pump delivery mechanism.

[0012] Preferably, the servo unwinding system includes an unwinding frame, an air shaft for mounting lithium battery rolls, a first guide roller, a second guide roller, and an unwinding drive device. The first guide roller and the second guide roller are arranged sequentially along the moving direction of the lithium battery strip. The air shaft, the first guide roller, and the second guide roller are kept parallel to each other and are rotatably mounted on the unwinding frame. The air shaft is connected to the output part of the unwinding drive device through a transmission assembly.

[0013] Preferably, the device also includes an unwinding and pressing device, which has a pressing section for pressing and leveling the lithium battery strip. The pressing section of the unwinding and pressing device is arranged between the first guide roller and the second guide roller, and is located above and below the lithium battery strip's movement path.

[0014] Preferably, the unwinding and pressing device includes an unwinding and pressing platform, at least two unwinding and pressing plates, and several pressing drive devices. The unwinding and pressing plates extend along the width direction of the lithium battery strip, and the several unwinding and pressing plates are arranged sequentially on one side of the lithium battery strip's moving path along the moving direction of the lithium battery strip. The unwinding and pressing platform is arranged on the other side of the lithium battery strip's moving path. Each unwinding and pressing plate is connected to its corresponding pressing drive device and moves closer to or further away from the unwinding and pressing platform under the drive of the pressing drive device.

[0015] During operation, this invention can quickly fix or release lithium battery rolls via an air shaft, reducing roll change time. A closed-loop tension control is achieved using an unwinding drive device to prevent the lithium battery rolls from becoming loose or stretched. Simultaneously, it eliminates potential warping or creases in the lithium battery strip or at joints, resulting in a smoother strip. Multiple unwinding and pressing plates operate sequentially to gradually flatten the lithium battery strip, preventing creases or tears caused by single-stage pressing. Furthermore, the pressing force can be dynamically adjusted based on local deformation of the lithium battery strip, offering high customizability and versatility.

[0016] Preferably, the correction system includes a correction frame for real-time monitoring of the lithium battery strip position, a third guide roller, a fourth guide roller, a correction sensing module, a linear guide rail, and a correction drive device. The third and fourth guide rollers are parallel to each other and are rotatably mounted on the correction frame in sequence along the direction of lithium battery strip movement. The monitoring end of the correction sensing module is arranged between the third and fourth guide rollers and on one side of the lithium battery strip movement path. The linear guide rail extends along the width direction of the lithium battery strip. The servo unwinding system is slidably and limitably mounted on the linear guide rail and is connected to the output part of the correction drive device through a transmission component. When the correction sensing module detects a deviation in the lithium battery strip, the servo unwinding system slides along the linear guide rail to the corresponding position under the drive of the correction drive device.

[0017] Preferably, the correction system further includes a tension adjustment bracket and a tension adjustment drive device. The tension adjustment bracket is movably mounted on the correction frame. The third guide roller is movably arranged on the correction frame via the tension adjustment bracket and is connected to the output part of the tension adjustment drive device via the tension adjustment bracket. The third guide roller moves closer to or further away from the fourth guide roller under the drive of the tension adjustment drive device to achieve tension adjustment of the lithium battery strip.

[0018] When this invention is in operation, the servo unwinding system is directly driven to move as a whole by the correction drive device. It can achieve a wide range of correction work while maintaining a stable angle between the lithium battery strip and the coating roller. It has a fast response speed and is suitable for high-speed unwinding. The correction work is closed-loop controlled by the correction sensor module. At the same time, the tension adjustment drive device drives the third roller to achieve a certain degree of tension adjustment function, making the tension control of the lithium battery strip more flexible, the tension adjustment smooth, and the sudden impact small, avoiding stretching or loosening of the lithium battery strip due to correction.

[0019] Preferably, the extrusion coating module includes a coating frame, a coating roller, a dispensing assembly, a dispensing position adjustment mechanism, an extrusion die assembly, an extrusion position adjustment mechanism, and a coating drive device. The coating roller is rotatably mounted on the coating frame and is connected to the output part of the coating drive device via a transmission assembly. The dispensing assembly is mounted on the position adjustment part of the dispensing position adjustment mechanism and operates according to adaptively adjusted control parameters under the drive of the dispensing position adjustment mechanism to complete the dispensing work. The extrusion die assembly is mounted on the position adjustment part of the extrusion position adjustment mechanism and operates according to adaptively adjusted control parameters under the drive of the extrusion position adjustment mechanism to complete the coating work.

[0020] Preferably, the dispensing position adjustment mechanism includes a dispensing horizontal guide rail, a dispensing horizontal drive device, a dispensing lifting guide rail, and a dispensing lifting drive device. Two dispensing lifting guide rails are provided and respectively arranged on both sides of the top of the coating frame. The dispensing lifting guide rails extend along the radial direction of the coating roller. The two ends of the dispensing horizontal guide rail are respectively vertically and limitably mounted on the two dispensing lifting guide rails and are connected to the output part of the dispensing lifting drive device via a transmission component. The dispensing horizontal guide rail extends along the width direction of the lithium battery strip. The dispensing assembly is slidably and limitably mounted on the dispensing horizontal guide rail and is connected to the output part of the dispensing horizontal drive device via a transmission component. The dispensing assembly moves to a preset dispensing position to perform dispensing work under the drive of the dispensing lifting drive device and / or the dispensing horizontal drive device.

[0021] Preferably, the extrusion position adjustment mechanism includes a coating horizontal guide rail, a coating bracket, and a coating horizontal drive device. The coating horizontal guide rail extends along the radial direction of the coating roller and is arranged on one side of the coating frame. The extrusion die assembly is slidably and limitedly mounted on the coating horizontal guide rail through the coating bracket, and is driven by the output part of the coating horizontal drive device through a transmission component. The extrusion die assembly moves to the preset coating position under the drive of the coating horizontal drive device to perform coating work.

[0022] In operation, this invention features independent position adjustment mechanisms for both the dispensing assembly and the extrusion die assembly, allowing for optimization of the dispensing and main coating positions and gaps. This meets the requirements for intermittent or striped coating of lithium battery electrodes. Each component is installed independently, eliminating the need for complete disassembly during replacement or cleaning, facilitating future maintenance. The movable dispensing assembly automatically moves to a preset coordinate to complete the dispensing process when switching product specifications, eliminating the need for manual adjustment. Furthermore, the gap between the extrusion die assembly and the coating roller can be dynamically controlled according to actual needs, eliminating the need to replace gaskets and ensuring high coating quality consistency. The dispensing and extrusion die assemblies can be removed during tape threading or cleaning of the coating machine, further simplifying maintenance.

[0023] The beneficial technical effects of this invention include:

[0024] 1. This invention enables a series of tasks, including automatic feeding of lithium battery rolls, automatic coating supply, dynamic correction of lithium battery strips, adaptive adjustment of coating position, pressure, and area, and automatic coating. It has a high degree of automation and intelligence. The extrusion coating module can automatically adjust control parameters according to different specifications of lithium battery strips, and is applicable to various types of strips. This reduces the time for changing pads and improves production efficiency. At the same time, the movable dispensing coating part of the position-adjustable extrusion coating module can adapt to different coating patterns and edge coating requirements, which can improve the accuracy and consistency of coating work and ensure high working stability during continuous production.

[0025] 2. This invention uses an air shaft to quickly fix or release lithium battery rolls, reducing roll change time. It employs an unwinding drive device to achieve closed-loop tension control, preventing the lithium battery rolls from becoming loose or stretched. Simultaneously, it eliminates potential warping or creases in the lithium battery strip or at joints, resulting in a smoother strip. Multiple unwinding and pressing plates operate sequentially to gradually flatten the lithium battery strip, preventing creases or tears caused by single-stage pressing. Furthermore, the pressing force can be dynamically adjusted based on local deformation of the lithium battery strip, offering high customizability and versatility.

[0026] 3. This invention directly drives the servo unwinding system to move as a whole through a correction drive device, which can achieve a wide range of correction work while maintaining a stable angle between the lithium battery strip and the coating roller. It has a fast response speed and is suitable for high-speed unwinding. The correction work is closed-loop controlled through a correction sensor module. At the same time, the tension adjustment drive device drives the third roller to achieve a certain degree of tension adjustment, making the tension control of the lithium battery strip more flexible, the tension adjustment smooth, and the sudden impact small, avoiding stretching or loosening of the lithium battery strip due to correction.

[0027] 4. This invention equips both the dispensing assembly and the extrusion die assembly with independent position adjustment mechanisms, which can optimize the position and gap of dispensing and main coating respectively. This can meet the needs of intermittent coating or stripe coating of lithium battery electrodes. Each component is installed independently, and there is no need to disassemble the whole assembly for replacement or cleaning, which is convenient for later maintenance. When switching product specifications, the movable dispensing assembly can automatically move to the preset coordinate to complete the dispensing work without manual adjustment. The gap between the extrusion die assembly and the coating roller can be dynamically controlled according to actual needs without replacing the gasket. The coating quality is highly consistent, and the dispensing assembly and extrusion die assembly can be removed when threading the tape or cleaning the coating machine for convenient maintenance.

[0028] Other features and advantages of the present invention will be described in detail in the following detailed description and accompanying drawings. Attached Figure Description

[0029] The invention will be further described below with reference to the accompanying drawings:

[0030] Figure 1 This is a schematic diagram of a general-purpose lithium battery roll extrusion coating machine;

[0031] Figure 2 Schematic diagram of the extrusion coating module Figure 1 ;

[0032] Figure 3 Schematic diagram of the extrusion coating module Figure 2 ;

[0033] Figure 4 Schematic diagram of the servo unwinding system Figure 1 ;

[0034] Figure 5 Schematic diagram of the servo unwinding system Figure 2 ;

[0035] Figure 6 This is a schematic diagram of the correction system.

[0036] Figure 7 This is a schematic diagram of the structure of the extrusion pump coating delivery device. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0038] In the following description, terms such as “inner,” “outer,” “upper,” “lower,” “left,” and “right” are used only to indicate orientation or positional relationship for the convenience of describing the embodiments and simplifying the description, and are not intended to 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 the present invention.

[0039] Example 1:

[0040] Please see Figure 1 This embodiment discloses a general-purpose lithium battery roll extrusion coating machine, comprising:

[0041] Extrusion pump paint delivery device 1, used for storing and supplying paint;

[0042] Servo unwinding system 2 is used to install lithium battery rolls and unwind them according to preset control parameters;

[0043] The correction system 3 is used to dynamically correct the alignment of the lithium battery strip based on its real-time position.

[0044] The extrusion coating module 4 is used to adjust the control parameters of the coating operation according to the specifications of the lithium battery strip and to complete the coating operation of the lithium battery roll.

[0045] The correction part of the correction system 3 is arranged at the lithium battery strip output end of the servo unwinding system 2. The lithium battery strip feeding end of the extrusion coating module 4 is connected to the lithium battery strip output end of the servo unwinding system 2. The paint feeding end of the extrusion coating module 4 is connected to the paint output end of the extrusion pump paint conveying device 1. The extrusion coating module 4 is equipped with a position-adjustable movable dispensing coating part and a coating station for coating work. When the movable dispensing coating part of the extrusion coating module 4 is performing coating work, it applies control parameters that have been adaptively adjusted to the lithium battery strip in the coating station.

[0046] In operation, this embodiment can automatically feed lithium battery rolls, automatically supply coatings, dynamically correct lithium battery strip deviation, adaptively adjust coating position, pressure, and area, and automatically apply coatings. It has a high degree of automation and intelligence. The extrusion coating module 4 can automatically adjust control parameters according to different specifications of lithium battery strips, and is suitable for various types of strips, reducing the time for changing pads and improving production efficiency. At the same time, the movable dispensing coating part of the position-adjustable extrusion coating module 4 can adapt to different coating patterns and edge coating requirements, which can improve the accuracy and consistency of coating work and ensure high working stability during continuous production.

[0047] Please see Figure 7In this embodiment, the extrusion pump coating conveying device 1 includes a coating stirring mechanism 11 for uniformly stirring the coating, a first extrusion pump conveying mechanism 12, a pressure transmitter 13, and a second extrusion pump conveying mechanism 14. The input end of the first extrusion pump conveying mechanism 12 is connected to the output end of the coating stirring mechanism 11, the input end of the second extrusion pump conveying mechanism 14 is connected to the output end of the first extrusion pump conveying mechanism 12, and the output end of the second extrusion pump conveying mechanism 14 is connected to the coating feed end of the extrusion coating module 4. The pressure transmitter 13 is arranged between the output end of the first extrusion pump conveying mechanism 12 and the input end of the second extrusion pump conveying mechanism 14. During operation, the coating stirring mechanism 11, the first extrusion pump conveying mechanism 12, and the second extrusion pump conveying mechanism 14 can be arranged on two trolleys respectively, and the parts are connected by Teflon tubes. When changing the coating, the coating to be replaced can be directly pushed to the side of the coating machine by the trolley to complete the coating replacement. There is no need to clean the coating stirring mechanism 11, and the material replacement time is short.

[0048] Please see Figure 4 and Figure 5 Preferably, the servo unwinding system 2 includes an unwinding frame 21, an air shaft 22 for mounting lithium battery rolls, a first guide roller 23, a second guide roller 24, and an unwinding drive device 25. The first guide roller 23 and the second guide roller 24 are arranged sequentially along the moving direction of the lithium battery strip. The air shaft 22, the first guide roller 23, and the second guide roller 24 are kept parallel to each other and are all rotatably mounted on the unwinding frame 21. The air shaft 22 is connected to the output part of the unwinding drive device 25 through a transmission assembly. Preferably, the unwinding frame... A mounting groove is provided on one side of the frame 21, so that one end of the air shaft 22 can be detachably and limitedly installed in the mounting groove. The servo unwinding system 2 also includes a locking device 27. When one end of the air shaft 22 is installed in the mounting groove, it is limitedly connected to the locking part of the locking device 27. When replacing the lithium battery roll, it is only necessary to unlock the locking device 27 to remove the lithium battery roll to be replaced. After replacing it with a new lithium battery roll, the air shaft 22 is reinstalled and locked by the locking device 27 to complete the replacement work. The operation is convenient and quick.

[0049] As a further improvement of this embodiment, an unwinding and pressing device 26 is also included. The unwinding and pressing device 26 is provided with a pressing part for pressing and flattening the lithium battery strip. The pressing part of the unwinding and pressing device 26 is arranged between the first guide roller and the second guide roller 24, and is located above and below the lithium battery strip moving path. In this embodiment, the unwinding and pressing device 26 includes an unwinding and pressing platform 261, at least two unwinding and pressing plates 262, and a plurality of pressing drive devices 263. The unwinding and pressing plates 262 extend along the width direction of the lithium battery strip. The plurality of unwinding and pressing plates 262 are arranged sequentially on one side of the lithium battery strip moving path along the moving direction of the lithium battery strip. The unwinding and pressing platform 261 is arranged on the other side of the lithium battery strip moving path. Each unwinding and pressing plate 262 is connected to its corresponding pressing drive device 263 and moves closer to or away from the unwinding and pressing platform 261 under the drive of the pressing drive device 263.

[0050] In this embodiment, the air shaft 22 can quickly fix or release the lithium battery roll, reducing roll change time. The unwinding drive device 25 achieves closed-loop tension control, preventing the lithium battery roll from becoming loose or stretched. It can also eliminate warping or creases that may occur in the lithium battery strip or at the joints, making the lithium battery strip flatter. Multiple unwinding pressure plates 262 operate sequentially to gradually flatten the lithium battery strip, avoiding creases or tears caused by a single compression. The pressure can be dynamically adjusted according to the local deformation of the lithium battery strip, offering high customization and good versatility.

[0051] Example 2:

[0052] Please see Figures 4 to 6 This embodiment provides a general-purpose lithium battery roll extrusion coating machine. The similarities with other embodiments will not be repeated. The differences will be described in detail below.

[0053] In this embodiment, the correction system 3 includes a correction frame 31 for real-time monitoring of the lithium battery strip position, a third guide roller 32, a fourth guide roller 33, a correction sensing module 34, a linear guide rail 35, and a correction drive device 36. The third guide roller 32 and the fourth guide roller 33 are parallel to each other and are rotatably mounted on the correction frame 31 in sequence along the direction of lithium battery strip movement. The monitoring end of the correction sensing module 34 is arranged between the third guide roller 32 and the fourth guide roller 33 and is located on one side of the lithium battery strip movement path. The linear guide rail 35 is positioned along the lithium battery strip movement path. The lithium battery strip extends in the width direction. The servo unwinding system 2 is slidably mounted on the linear guide rail 35 and is connected to the output of the correction drive device 36 via a transmission component. When the correction sensor module 34 detects a deviation in the lithium battery strip, the servo unwinding system 2 slides along the linear guide rail 35 to the corresponding position under the drive of the correction drive device 36. During operation, the correction drive device 36 is set as a servo motor and is connected to the servo unwinding system 2 via a correction electric cylinder, resulting in high control precision and good correction effect.

[0054] Preferably, the web guiding system 3 also includes a tension adjusting bracket 37 and a tension adjusting drive device 38. The tension adjusting bracket 37 is movably mounted on the web guiding frame 31. The third guide roller 32 is movably arranged on the web guiding frame 31 via the tension adjusting bracket 37 and is connected to the output part of the tension adjusting drive device 38 via the tension adjusting bracket 37. Under the drive of the tension adjusting drive device 38, the third guide roller 32 moves closer to or further away from the fourth guide roller 33 to achieve tension adjustment of the lithium battery strip. Preferably, the web guiding accuracy can be further improved by adding a potentiometer.

[0055] In this embodiment, the servo unwinding system 2 is directly driven to move as a whole by the correction drive device 36. This allows for a wide range of correction work while maintaining a stable angle between the lithium battery strip and the coating roller 42. It has a fast response speed and is suitable for high-speed unwinding. The correction sensor module 34 enables closed-loop control of the correction work. At the same time, the tension adjustment drive device 38 drives the third roller 32 to achieve a certain degree of tension adjustment, making the tension control of the lithium battery strip more flexible, the tension adjustment smooth, and the impact of sudden changes small, thus avoiding stretching or loosening of the lithium battery strip due to correction.

[0056] Example 3:

[0057] Please see Figure 2 and Figure 3 This embodiment provides a general-purpose lithium battery roll extrusion coating machine. The similarities with other embodiments will not be repeated. The differences will be described in detail below.

[0058] In this embodiment, the extrusion coating module 4 includes a coating frame 41, a coating roller 42, a dispensing assembly 43, a dispensing position adjustment mechanism 44, an extrusion die assembly 45, an extrusion position adjustment mechanism 46, and a coating drive device 47. The coating roller 42 is rotatably mounted on the coating frame 41 and is connected to the output part of the coating drive device 47 via a transmission assembly. The dispensing assembly 43 is mounted on the position adjustment part of the dispensing position adjustment mechanism 44 and operates according to adaptively adjusted control parameters under the drive of the dispensing position adjustment mechanism 44 to complete the dispensing work. The extrusion die assembly... The extrusion coating module 45 is installed on the position adjustment part of the extrusion position adjustment mechanism 46, and operates according to the adaptively adjusted control parameters under the drive of the extrusion position adjustment mechanism 46 to complete the coating work. Preferably, the extrusion coating module 4 also includes a plunger pump 48. The extrusion die assembly 45 is connected to the coating output end of the extrusion pump coating delivery device 1 through the plunger pump 48, and a discharge port is added to the scraping part of the extrusion die assembly 45, so that the coating can be directly output from the extrusion die assembly 45 to the lithium battery strip. It is suitable for coating work with low requirements, has high output efficiency, and is suitable for high-speed coating work.

[0059] In specific implementation, the dispensing position adjustment mechanism 44 includes a dispensing horizontal guide rail 441, a dispensing horizontal drive device 442, a dispensing lifting guide rail 443, and a dispensing lifting drive device 444. Two dispensing lifting guide rails 443 are provided and respectively arranged on the top two sides of the coating frame 41. The dispensing lifting guide rails 443 extend along the radial direction of the coating roller 42. The two ends of the dispensing horizontal guide rail 441 are respectively vertically and limit-mounted on the two dispensing lifting guide rails 443, and are connected to the output part of the dispensing lifting drive device 444 via a transmission component. The dispensing horizontal guide rail 441 extends along the width direction of the lithium battery strip. The dispensing assembly 43 is slidably and limit-mounted on the dispensing horizontal guide rail 441 and is connected to the output part of the dispensing horizontal drive device 442 via a transmission component. The dispensing assembly 43 moves to a preset dispensing position to perform dispensing work under the drive of the dispensing lifting drive device 444 and / or the dispensing horizontal drive device 442.

[0060] Preferably, the extrusion position adjustment mechanism 46 includes a coating horizontal guide rail 461, a coating bracket 462, and a coating horizontal drive device 463. The coating horizontal guide rail 461 extends along the radial direction of the coating roller 42 and is arranged on one side of the coating frame 41. The extrusion die assembly 45 is slidably limited and mounted on the coating horizontal guide rail 461 through the coating bracket 462, and is driven by the output part of the coating horizontal drive device 463 through a transmission component. The extrusion die assembly 45 moves to the preset coating position under the drive of the coating horizontal drive device 463 to perform coating work. During operation, the coating horizontal drive device 463 is set as a servo motor. The coating horizontal drive device 463 is driven by the extrusion die assembly 45 through a ball screw, which can further improve the control accuracy of the coating thickness.

[0061] In this embodiment, by equipping both the dispensing assembly 43 and the extrusion die assembly 45 with independent position adjustment mechanisms, the position and gap of dispensing and main coating can be optimized respectively, which can meet the needs of intermittent coating or stripe coating of lithium battery electrodes. Each component is installed independently, and there is no need to disassemble the whole body when replacing or cleaning, which is convenient for later maintenance. When switching product specifications, the movable dispensing assembly 43 can be automatically moved to the preset coordinate to complete the dispensing work without manual adjustment. The gap between the extrusion die assembly 45 and the coating roller 42 can be dynamically controlled according to actual needs, without the need to replace the gasket, resulting in high coating quality consistency. The dispensing assembly 43 and the extrusion die assembly 45 can be removed when threading the tape or cleaning the coating machine, which is convenient for maintenance.

[0062] The beneficial technical effects of this embodiment include: the present invention can realize a series of tasks such as automatic feeding of lithium battery rolls, automatic supply of coatings, dynamic correction of lithium battery strips, adaptive adjustment of coating position, pressure and area, and automatic coating. It has a high degree of automation and intelligence. The extrusion coating module can automatically adjust the control parameters according to different specifications of lithium battery strips, and is applicable to a variety of strip types. It reduces the time for changing pads and improves production efficiency. At the same time, the movable dispensing coating part of the position-adjustable extrusion coating module can adapt to different coating patterns and edge coating requirements, which can improve the accuracy and consistency of coating work and has high working stability during continuous production.

[0063] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A general-purpose lithium battery roll extrusion coating machine, characterized in that, include: A squeeze pump coating delivery device (1) is used to store and supply coatings; Servo unwinding system (2) is used to install lithium battery rolls and unwind them according to preset control parameters; The correction system (3) is used to perform dynamic correction based on the real-time position of the lithium battery strip; The extrusion coating module (4) is used to adjust the control parameters of the coating work according to the specifications of the lithium battery strip and to complete the coating work of the lithium battery roll. The correction part of the correction system (3) is arranged at the lithium battery strip output end of the servo unwinding system (2). The lithium battery strip feeding end of the extrusion coating module (4) is connected to the lithium battery strip output end of the servo unwinding system (2). The coating feeding end of the extrusion coating module (4) is connected to the coating output end of the extrusion pump coating conveying device (1). The extrusion coating module (4) is provided with a position-adjustable movable dispensing coating part and a coating station for coating work. When the movable dispensing coating part of the extrusion coating module (4) is performing coating work, it applies control parameters that have been adaptively adjusted to the lithium battery strip in the coating station.

2. The universal lithium battery roll extrusion coating machine according to claim 1, characterized in that: The extrusion pump coating delivery device (1) includes a coating stirring mechanism (11) for stirring coating evenly, a first extrusion pump delivery mechanism (12), a pressure transmitter (13), and a second extrusion pump delivery mechanism (14). The input end of the first extrusion pump delivery mechanism (12) is connected to the output end of the coating stirring mechanism (11), the input end of the second extrusion pump delivery mechanism (14) is connected to the output end of the first extrusion pump delivery mechanism (12), and the output end of the second extrusion pump delivery mechanism (14) is connected to the coating feed end of the extrusion coating module (4). The pressure transmitter (13) is arranged between the output end of the first extrusion pump delivery mechanism (12) and the input end of the second extrusion pump delivery mechanism (14).

3. A general-purpose lithium battery roll extrusion coating machine according to claim 1, characterized in that: The servo unwinding system (2) includes an unwinding frame (21), an air shaft (22) for mounting lithium battery rolls, a first guide roller (23), a second guide roller (24), and an unwinding drive device (25). The first guide roller (23) and the second guide roller (24) are arranged sequentially along the moving direction of the lithium battery strip. The air shaft (22), the first guide roller (23), and the second guide roller (24) are kept parallel to each other and can be rotatably mounted on the unwinding frame (21). The air shaft (22) is connected to the output part of the unwinding drive device (25) through a transmission assembly.

4. A general-purpose lithium battery roll extrusion coating machine according to claim 3, characterized in that: It also includes an unwinding and pressing device (26), which has a pressing part for pressing and flattening the lithium battery strip. The pressing part of the unwinding and pressing device (26) is arranged between the first roller (23) and the second roller (24), and is located above and below the lithium battery strip moving path.

5. A general-purpose lithium battery roll extrusion coating machine according to claim 4, characterized in that: The unwinding and pressing device (26) includes an unwinding and pressing platform (261), at least two unwinding and pressing plates (262), and several pressing drive devices (263). The unwinding and pressing plates (262) extend along the width direction of the lithium battery strip. Several unwinding and pressing plates (262) are arranged sequentially on one side of the lithium battery strip's moving path along the moving direction of the lithium battery strip. The unwinding and pressing platform (261) is arranged on the other side of the lithium battery strip's moving path. Each unwinding and pressing plate (262) is connected to its corresponding pressing drive device (263) and moves closer to or further away from the unwinding and pressing platform (261) under the drive of the pressing drive device (263).

6. A general-purpose lithium battery roll extrusion coating machine according to claim 1, characterized in that: The correction system (3) includes a correction frame (31) for real-time monitoring of the lithium battery strip position, a third guide roller (32), a fourth guide roller (33), a correction sensing module (34), a linear guide rail (35), and a correction drive device (36). The third guide roller (32) and the fourth guide roller (33) are parallel to each other and are rotatably mounted on the correction frame (31) in sequence along the direction of lithium battery strip movement. The monitoring end of the correction sensing module (34) is arranged on the third guide roller (32) and the fourth guide roller. (33) and located on one side of the lithium battery strip moving path, the linear guide (35) extends along the width direction of the lithium battery strip, the servo unwinding system (2) is slidably limited and installed on the linear guide (35), and is connected to the output part of the correction drive device (36) through the transmission component. When the correction sensing module (34) detects the offset of the lithium battery strip, the servo unwinding system (2) slides along the linear guide (35) to the corresponding position under the drive of the correction drive device (36).

7. A general-purpose lithium battery roll extrusion coating machine according to claim 6, characterized in that: The correction system (3) also includes a tension adjustment bracket (37) and a tension adjustment drive device (38). The tension adjustment bracket (37) is movably mounted on the correction frame (31). The third roller (32) is movably arranged on the correction frame (31) through the tension adjustment bracket (37) and is connected to the output part of the tension adjustment drive device (38) through the tension adjustment bracket (37). The third roller (32) moves closer to or further away from the fourth roller (33) under the drive of the tension adjustment drive device (38) to achieve tension adjustment of the lithium battery strip.

8. A general-purpose lithium battery roll extrusion coating machine according to claim 1, characterized in that: The extrusion coating module (4) includes a coating frame (41), a coating roller (42), a dispensing assembly (43), a dispensing position adjustment mechanism (44), an extrusion die assembly (45), an extrusion position adjustment mechanism (46), and a coating drive device (47). The coating roller (42) is rotatably mounted on the coating frame (41) and is connected to the output part of the coating drive device (47) via a transmission assembly. The dispensing assembly (43) is mounted on the position adjustment part of the dispensing position adjustment mechanism (44) and operates according to the adaptively adjusted control parameters under the drive of the dispensing position adjustment mechanism (44) to complete the dispensing work. The extrusion die assembly (45) is mounted on the position adjustment part of the extrusion position adjustment mechanism (46) and operates according to the adaptively adjusted control parameters under the drive of the extrusion position adjustment mechanism (46) to complete the coating work.

9. A general-purpose lithium battery roll extrusion coating machine according to claim 8, characterized in that: The dispensing position adjustment mechanism (44) includes a dispensing horizontal guide rail (441), a dispensing horizontal drive device (442), a dispensing lifting guide rail (443), and a dispensing lifting drive device (444). Two dispensing lifting guide rails (443) are provided and are respectively arranged on both sides of the top of the coating frame (41). The dispensing lifting guide rails (443) extend along the radial direction of the coating roller (42). The two ends of the dispensing horizontal guide rail (441) are respectively vertically and flexibly limited and mounted on the two dispensing lifting guide rails (443), and are connected via... The dispensing horizontal guide rail (441) is connected to the output part of the dispensing lifting drive device (444) via the transmission component. The dispensing horizontal guide rail (441) extends along the width direction of the lithium battery strip. The dispensing assembly (43) is slidably limited and mounted on the dispensing horizontal guide rail (441). It is connected to the output part of the dispensing horizontal drive device (442) via the transmission component. The dispensing assembly (43) moves to the preset dispensing position to perform dispensing work under the drive of the dispensing lifting drive device (444) and / or the dispensing horizontal drive device (442).

10. A general-purpose lithium battery roll extrusion coating machine according to claim 8, characterized in that: The extrusion position adjustment mechanism (46) includes a coating horizontal guide rail (461), a coating bracket (462), and a coating horizontal drive device (463). The coating horizontal guide rail (461) extends along the radial direction of the coating roller (42) and is arranged on one side of the coating frame (41). The extrusion die assembly (45) is slidably limited and mounted on the coating horizontal guide rail (461) through the coating bracket (462), and is connected to the output part of the coating horizontal drive device (463) through a transmission assembly. The extrusion die assembly (45) moves to the preset coating position under the drive of the coating horizontal drive device (463) to perform coating work.

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