Base material passivation and coating composite production line

Abstract

The utility model discloses a base material passivation and coating composite production line which comprises a base material unwinding mechanism, a base material passivation mechanism, a third drying oven, a first traction mechanism, a base material gluing mechanism, a first drying oven, a membrane material unwinding mechanism, a membrane material gluing mechanism, a second drying oven, a second traction mechanism, a composite mechanism and a winding mechanism, the base material passivation mechanism comprises a material box, a gravure roller, a pressing roller, a first air cylinder used for driving the material box to move horizontally, a motor used for driving the gravure roller to rotate and a second air cylinder used for driving the pressing roller to move horizontally, the material box is externally connected with a liquid inlet assembly, and an opening is formed in the side, close to the gravure roller, of the material box. Scrapers are arranged on the two sides of the opening, and a base material penetrates through the space between the pressing roller and the gravure roller. According to the utility model, the uniform passivation of the base material can be ensured, the compounding quality of the base material is improved, and the working procedures of base material passivation, base material gluing, membrane material gluing and compounding can be integrated on one production line, so that the whole production line is compact in structure, saves space and improves the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of composite equipment technology, specifically to a substrate passivation coating composite production line. Background Technology

[0002] Coating and lamination refers to a process technology in which an adhesive material is applied to the surface of a substrate using a coating head, and then the substrate is bonded to other films and rolled to form a new composite material, thereby improving the performance of the substrate. In the field of lithium-ion battery production, coating and lamination technology is widely used in the production process of positive and negative electrode materials. The substrate typically includes metal foils such as copper foil and aluminum foil, and the films typically include PP film and PET film. Before coating with adhesive, the substrate needs to undergo passivation treatment.

[0003] Traditional passivation, coating, and lamination processes are divided into three production lines with different processes: passivation, coating, and lamination drying. On the one hand, setting up three production lines with different processes requires a large amount of factory space, a lot of equipment, and complicated procedures. The resulting composite materials have many quality problems and low production efficiency. On the other hand, existing passivation production lines use a passivation method that involves immersing the substrate in a liquid roller. This often results in problems such as leakage in the passivation tank, splashing, short circuits in the liquid roller, and electrical leakage. As a result, the passivation of the substrate is uneven, which affects the quality of the composite. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a substrate passivation coating composite production line, which can ensure uniform passivation of the substrate, improve the composite quality of the substrate, and integrate the processes of substrate passivation, substrate coating, film coating and lamination into one production line, making the entire production line compact, saving space and improving production efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A substrate passivation coating and laminating production line includes a substrate unwinding mechanism, a first traction mechanism, a substrate coating mechanism, a first oven, a film unwinding mechanism, a film coating mechanism, a second oven, a second traction mechanism, a laminating mechanism, and a winding mechanism. A substrate passivation mechanism is provided between the substrate unwinding mechanism and the first traction mechanism, and a third oven is provided between the substrate passivation mechanism and the first traction mechanism. The third oven, the first oven, and the second oven are arranged side by side and located on the upper layer.

[0007] As a further improvement to the above technical solution, the substrate passivation mechanism includes a material box, a gravure roller, a pressure roller, a first cylinder for driving the material box closer to or away from the gravure roller, a motor for driving the gravure roller to rotate, and a second cylinder for driving the pressure roller closer to or away from the gravure roller. A liquid inlet assembly is connected to the outside of the material box, and the liquid inlet assembly is used to inject passivation liquid into the cavity inside the material box. An opening is provided on the side of the material box near the gravure roller, and scrapers are provided on both sides of the opening. The substrate passes between the pressure roller and the gravure roller.

[0008] When the first cylinder drives the material box to approach the gravure roller, a portion of the roller surface of the gravure roller extends from the opening into the cavity of the material box and comes into contact with the passivation liquid.

[0009] As a further improvement to the above technical solution, there are two second cylinders, which are mounted on the frame of the laminating machine. The telescopic ends of the second cylinders are connected to mounting plates, and the two ends of the pressure roller are rotatably connected to the two mounting plates respectively.

[0010] As a further improvement to the above technical solution, a linear guide rail is provided between the mounting plate and the frame of the composite machine, and the length direction of the linear guide rail extends along the extension and retraction direction of the second cylinder.

[0011] As a further improvement to the above technical solution, a rotating shaft is connected between the two mounting plates, with both ends of the rotating shaft rotatably connected to the two mounting plates respectively. The rotating shaft is parallel to the pressure roller and is used to support the substrate.

[0012] As a further improvement to the above technical solution, gears are connected to both ends of the rotating shaft, and two racks are provided on the frame. The gears mesh with the racks, and the length direction of the racks extends along the extension and retraction direction of the second cylinder.

[0013] As a further improvement to the above technical solution, both the substrate unwinding mechanism and the film unwinding mechanism include an unwinding roller, an adjusting roller, a tension swing roller, and several first guide rollers. There are two unwinding rollers, which are arranged one above the other. One unwinding roller is used to carry the working roll, and the other unwinding roller is used to carry the spare roll. The adjusting roller is used to perform preliminary adjustment of the tension of the substrate. The first guide rollers are respectively arranged above and below one side of the tension swing roller. The tension swing roller and the two first guide rollers form a large wrap angle tension adjustment system.

[0014] As a further improvement to the above technical solution, a corona treatment mechanism is provided between the film unwinding mechanism and the film coating mechanism. The corona treatment mechanism includes a corona roller and two second guide rollers, with the corona roller located above the two second guide rollers.

[0015] As a further improvement to the above technical solution, the composite mechanism includes a composite heating roller, a composite adhesive pressing roller, and a composite steel pressing roller. The composite adhesive pressing roller is located between the composite heating roller and the composite steel pressing roller. The composite steel pressing roller is used to support the composite adhesive pressing roller. The composite adhesive pressing roller presses the adhesive substrate and the adhesive film material onto the composite heating roller to form a composite material.

[0016] As a further improvement to the above technical solution, the first oven, the second oven and the third oven have the same structure. The first oven is provided with a number of third rollers and scribing rollers. The surface of the scribing rollers is provided with specific scribing patterns. The scribing rollers are located at the corners of the oven.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model provides a substrate passivation mechanism. A gravure roller and two scrapers can seal the opening of the material box. A motor drives the gravure roller to rotate, causing the passivation liquid in the cavity to adhere to the roller surface of the gravure roller. The two scrapers scrape away excess passivation liquid on the gravure roller, making the passivation liquid thickness on the roller surface of the gravure roller uniform. At the same time, it can prevent the passivation liquid from splashing as the gravure roller rotates. Finally, a second cylinder drives a pressure roller to approach the gravure roller. The pressure roller presses the substrate onto the roller surface of the gravure roller. The passivation liquid on the roller surface of the gravure roller is coated onto the surface of the substrate, forming a uniform passivation layer on the substrate surface. Thus, it can ensure uniform passivation of the substrate and improve the composite quality of the substrate.

[0019] 2. This utility model provides a substrate passivation coating composite production line, which can integrate the processes of substrate passivation, substrate coating, film coating and lamination into one production line, making the entire production line compact, saving space and improving production efficiency. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of a substrate passivation coating composite production line provided by an example of this utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the substrate passivation mechanism in the image;

[0023] Figure 3 yes Figure 2 A sectional view.

[0024] Reference numerals: 1-Substrate unwinding mechanism, 101-Unwinding roller, 102-Adjusting roller, 103-Tension swing roller, 104-First pass roller, 2-Substrate passivation mechanism, 201-Material box, 202-Gravure roller, 203-Pressure roller, 204-First cylinder, 205-Motor, 206-Second cylinder, 208-Liquid inlet assembly, 209-Scraper, 210-Mounting plate, 211-Linear guide rail, 212-Rotating shaft, 213-Gear, 214-Gear 3-Third drying oven, 4-First traction mechanism, 5-Substrate coating mechanism, 6-First drying oven, 601-Third passing roller, 602-Engraving roller, 7-Film material unwinding mechanism, 8-Corona treatment mechanism, 801-Corona treatment roller, 802-Second passing roller, 9-Film material coating mechanism, 10-Second drying oven, 11-Second traction mechanism, 12-Composite mechanism, 121-Composite heating roller, 122-Composite adhesive pressure roller, 123-Composite steel pressure roller, 13-Rewinding mechanism. Detailed Implementation

[0025] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0026] Reference Figure 1 An example of this utility model provides a substrate passivation coating composite production line, including a substrate unwinding mechanism 1, a first traction mechanism 4, a substrate coating mechanism 5, a first drying oven 6, a film unwinding mechanism 7, a film coating mechanism 9, a second drying oven 10, a second traction mechanism 11, a composite mechanism 12, and a winding mechanism 13. The substrate unwinding mechanism 1 and the first traction mechanism 4 are provided with a substrate passivation mechanism 2, and the substrate passivation mechanism 2 and the first traction mechanism 4 are provided with a third drying oven 3. The third drying oven 3, the first drying oven 6, and the second drying oven 10 are arranged side by side and located on the upper layer.

[0027] Understandably, the substrate unwinding mechanism 1 and the film unwinding mechanism 7 unwind synchronously. The first traction mechanism 4 tractions the substrate, causing the unwound substrate to pass through the substrate passivation mechanism 2, the third drying oven 3, the substrate coating mechanism 5, and the first drying oven 6 in sequence. The substrate passivation mechanism 2 passivates one side of the substrate. The passivated substrate rises to the third drying oven 3 for drying. After passivation and drying, the substrate descends to the substrate coating mechanism 5 for coating. After coating, the substrate rises again to the first drying oven 6 for drying, allowing the adhesive solvent coated on the substrate to evaporate. Simultaneously, the second traction mechanism 4... The guiding mechanism 11 pulls the membrane material, causing the unwound membrane material to enter the membrane coating mechanism 9 for coating. After coating, the membrane material is raised to the second drying oven 10 for drying, allowing the adhesive solvent coated on the membrane material to evaporate. Finally, the laminating mechanism 12 rolls the dried adhesive-coated substrate and the dried adhesive-coated membrane material to form a composite material. The winding mechanism 13 winds up the composite material. Thus, the processes of substrate passivation, substrate coating, membrane coating, and lamination can be integrated into one production line, making the entire production line compact, saving space, and improving production efficiency.

[0028] Reference Figure 2 and Figure 3 Furthermore, the substrate passivation mechanism includes a material box 201, a gravure roller 202, a pressure roller 203, a first cylinder 204 for driving the material box 201 closer to or away from the gravure roller 202, a motor 205 for driving the gravure roller 202 to rotate, and a second cylinder 206 for driving the pressure roller 203 closer to or away from the gravure roller 202. A liquid inlet assembly 208 is externally connected to the material box 201. The liquid inlet assembly 208 is used to inject passivation liquid into the cavity inside the material box 201. An opening is provided on the side of the material box 201 near the gravure roller 202. Scrapers 209 are provided on both sides of the opening. The substrate passes between the pressure roller 203 and the gravure roller 202. When the first cylinder 204 drives the material box 201 closer to the gravure roller 202, part of the roller surface of the gravure roller 202 extends into the cavity of the material box 201 from the opening of the material box 201 and comes into contact with the passivation liquid.

[0029] During the passivation process, firstly, the first cylinder 204 drives the material box 201 closer to the gravure roller 202 until both scrapers 209 are in contact with the roller surface of the gravure roller 202. Part of the roller surface of the gravure roller 202 extends from the opening of the material box 201 into its cavity, thus sealing the opening. Next, passivation liquid is injected into the cavity of the material box 201 through the liquid inlet assembly 208, immersing the roller surface of the gravure roller 202 on the opening side in the passivation liquid within the cavity of the material box 201. Then, the motor 205 drives the gravure roller 202 to rotate, causing the material box 201 to... The passivation liquid in the cavity adheres to the surface of the gravure roller 202. Two scrapers 209 scrape away the excess passivation liquid on the gravure roller 202, making the passivation liquid thickness on the surface of the gravure roller 202 uniform. At the same time, it can prevent the passivation liquid from splashing as the gravure roller 202 rotates. Finally, the second cylinder 206 drives the pressure roller 203 to approach the gravure roller 202. The pressure roller 203 presses the substrate onto the surface of the gravure roller 202. The passivation liquid on the surface of the gravure roller 202 is coated onto the surface of the substrate, forming a uniform passivation layer on the surface of the substrate. This ensures uniform passivation of the substrate and improves the composite quality of the substrate.

[0030] In some preferred embodiments, there are two second cylinders 206, which are mounted on the frame of the laminating machine. The telescopic ends of the second cylinders 206 are connected to mounting plates 210, and the two ends of the pressure roller 203 are rotatably connected to the two mounting plates 210 respectively.

[0031] It is understandable that by setting two second cylinders 206 and two mounting plates 210, the two mounting plates 210 can support the two ends of the pressure roller 203 respectively, and the two second cylinders 206 simultaneously drive the two ends of the pressure roller 203 to translate, thereby ensuring that the pressure roller 203 is subjected to balanced force, and thus ensuring that the substrate is subjected to uniform force when the pressure roller 203 is close to the gravure roller 202, further improving the uniformity of substrate passivation.

[0032] Furthermore, a linear guide rail 211 is provided between the mounting plate 210 and the frame of the laminating machine. The length direction of the linear guide rail 211 extends along the extension and retraction direction of the second cylinder 206. The linear guide rail 211 can guide the pressure roller 203 when it moves horizontally, thereby improving the stability of the pressure roller 203 when it moves horizontally.

[0033] Specifically, the linear guide 211 includes a guide rail and a slider. The guide rail is mounted on the frame of the composite machine, and the slider is mounted on one side of the mounting plate 210. The slider is slidably connected to the guide rail.

[0034] In other embodiments, the guide rail may also be disposed on one side of the mounting plate 210, and correspondingly, the slider is disposed on the frame of the laminating machine.

[0035] In some preferred embodiments, a rotating shaft 212 is connected between the two mounting plates 210. The two ends of the rotating shaft 212 are rotatably connected to the two mounting plates 210 respectively. The rotating shaft 212 is parallel to the pressure roller 203 and is used to support the substrate.

[0036] Furthermore, gears 213 are connected to both ends of the rotating shaft 212, and two racks 214 are provided on the frame of the composite machine. The gears 213 mesh with the racks 214, and the length of the racks 214 extends along the extension and retraction direction of the second cylinder 206.

[0037] Understandably, when the second cylinder 206 drives the mounting plate 210 to move, the mounting plate 210 drives the rotating shaft 212 and the pressure roller 203 to move as a whole. The rotating shaft 212 drives the gear 213 to translate. Since the gear 213 meshes with the rack 214, the gear 213 rotates around its own axis during translation due to the meshing action. Thus, the movement of the mounting plate 210 and the pressure roller 203 along the length of the rack 214 can be further limited, ensuring that the two mounting plates 210 rise and fall synchronously.

[0038] Furthermore, both the substrate unwinding mechanism 1 and the film unwinding mechanism 7 include an unwinding roller 101, an adjusting roller 102, a tension swing roller 103, and several first guide rollers 104. There are two unwinding rollers 101, which are arranged vertically. One unwinding roller 101 is used to carry the working roll, and the other unwinding roller 101 is used to carry the spare roll. The adjusting roller 102 is used to perform preliminary adjustment of the tension of the substrate. The first guide rollers 104 are respectively arranged above and below one side of the tension swing roller 103. The tension swing roller 103 and the two first guide rollers 104 form a large wrap angle tension adjustment system.

[0039] It is understandable that by setting two unwinding rollers 101 in both the substrate unwinding mechanism 1 and the film unwinding mechanism 7, it is convenient to change the rolls of the substrate and the film. This avoids the problem of machine downtime and material waste caused by a single unwinding roller 101 when changing rolls, saves roll changing time, and improves production efficiency.

[0040] Moreover, the adjusting roller 102 performs preliminary adjustment on the tension of the substrate or film after unwinding, and then conveys it to the tension swing roller 103 and the large wrap angle tension adjustment system formed by the two first passing rollers 104 for secondary adjustment. In this way, the tension fluctuation of the substrate or film can be effectively absorbed and detected, avoiding the stretching deformation of the substrate or film and ensuring the uniformity of the coating thickness.

[0041] In some preferred embodiments, a corona mechanism 8 is provided between the film unwinding mechanism 7 and the film coating mechanism 9. The corona mechanism 8 includes a corona roller 801 and two second guide rollers 802, with the corona roller 801 located above the two second guide rollers 802.

[0042] Understandably, the corona roller 801 stimulates the gas between the electrode and the worktable with high voltage, causing the gas to undergo corona discharge and generate high-energy ions, free radicals, electrons and low-temperature plasma, which in turn cause free radical reactions on the surface of the membrane material, crosslinking the polymer, thereby increasing the roughness of the membrane material surface and thus improving the adhesion of the coating layer.

[0043] In some preferred embodiments, the composite mechanism 12 includes a composite heating roller 121, a composite adhesive roller 122, and a composite steel roller 123. The composite adhesive roller 122 is located between the composite heating roller 121 and the composite steel roller 123. The composite steel roller 123 is used to support the composite adhesive roller 122. The composite adhesive roller 122 presses the adhesive-coated substrate and the adhesive-coated film onto the composite heating roller 121 to form a composite material.

[0044] Understandably, the composite steel pressure roller 123 provides rigid support to the composite adhesive pressure roller 122, which can evenly distribute the pressing pressure and avoid deformation of the adhesive substrate or wrinkles of the film caused by local stress concentration. At the same time, the composite steel pressure roller 123 can absorb the heat on the composite adhesive pressure roller 122 to prevent the composite adhesive pressure roller 122 from overheating. By heating the composite material through the composite heating roller 121, the adhesive layer on the substrate and the film can be softened, enabling the adhesive layer on the substrate and the film to flow rapidly and promoting the adhesion between the substrate and the film.

[0045] In some preferred embodiments, the first oven 6, the second oven 10 and the third oven 3 have the same structure. The first oven 6 is provided with a plurality of third rollers 601 and scribing rollers 602. The surface of the scribing rollers 602 is provided with specific scribing patterns. The scribing rollers 602 are located at the corners of the oven.

[0046] Understandably, the third roller 601 inside the oven can provide a belt turning function for the substrate or film material, which facilitates the layout of the belt path, extends the residence time of the substrate or film material in the oven, and improves drying efficiency. At the same time, it can also prevent the substrate or film material from contacting the side wall of the oven, preventing deformation caused by local high temperature.

[0047] Furthermore, the scribing roller 602 can eliminate wrinkles generated during long-distance transport of the substrate or film material in the oven, thereby improving the yield of composite materials.

[0048] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A substrate passivation coating and laminating production line, comprising a substrate unwinding mechanism, a first traction mechanism, a substrate coating mechanism, a first drying oven, a film unwinding mechanism, a film coating mechanism, a second drying oven, a second traction mechanism, a laminating mechanism, and a winding mechanism, characterized in that, A substrate passivation mechanism is provided between the substrate unwinding mechanism and the first traction mechanism, and a third drying oven is provided between the substrate passivation mechanism and the first traction mechanism. The third drying oven, the first drying oven, and the second drying oven are arranged side by side and located on the upper layer.

2. The substrate passivation coating composite production line according to claim 1, characterized in that, The substrate passivation mechanism includes a material box, a gravure roller, a pressure roller, a first cylinder for driving the material box closer to or away from the gravure roller, a motor for driving the gravure roller to rotate, and a second cylinder for driving the pressure roller closer to or away from the gravure roller. A liquid inlet assembly is connected to the outside of the material box, and the liquid inlet assembly is used to inject passivation liquid into the cavity inside the material box. An opening is provided on the side of the material box near the gravure roller, and scrapers are provided on both sides of the opening. The substrate passes between the pressure roller and the gravure roller. When the first cylinder drives the material box to approach the gravure roller, a portion of the roller surface of the gravure roller extends from the opening into the cavity of the material box and comes into contact with the passivation liquid.

3. The substrate passivation coating composite production line according to claim 2, characterized in that, There are two second cylinders, which are mounted on the frame of the laminating machine. The telescopic ends of the second cylinders are connected to mounting plates, and the two ends of the pressure roller are rotatably connected to the two mounting plates respectively.

4. The substrate passivation coating composite production line according to claim 3, characterized in that, A linear guide rail is provided between the mounting plate and the frame of the laminating machine, and the length direction of the linear guide rail extends along the extension and retraction direction of the second cylinder.

5. The substrate passivation coating composite production line according to claim 3, characterized in that, A rotating shaft is connected between the two mounting plates, with both ends of the rotating shaft rotatably connected to the two mounting plates respectively. The rotating shaft is parallel to the pressure roller and is used to support the substrate.

6. The substrate passivation coating composite production line according to claim 5, characterized in that, Both ends of the rotating shaft are connected to gears, and two racks are provided on the frame. The gears mesh with the racks, and the length of the racks extends along the extension and retraction direction of the second cylinder.

7. The substrate passivation coating composite production line according to claim 1, characterized in that, Both the substrate unwinding mechanism and the film unwinding mechanism include an unwinding roller, an adjusting roller, a tension swing roller, and several first guide rollers. There are two unwinding rollers, which are arranged one above the other. One unwinding roller is used to carry the working roll, and the other unwinding roller is used to carry the spare roll. The adjusting roller is used to perform preliminary tension adjustment on the substrate. The first guide rollers are respectively arranged above and below one side of the tension swing roller. The tension swing roller and the two first guide rollers form a large wrap angle tension adjustment system.

8. The substrate passivation coating composite production line according to claim 1, characterized in that, A corona treatment mechanism is provided between the film unwinding mechanism and the film coating mechanism. The corona treatment mechanism includes a corona roller and two second guide rollers, with the corona roller located above the two second guide rollers.

9. The substrate passivation coating composite production line according to claim 1, characterized in that, The composite mechanism includes a composite heating roller, a composite adhesive pressing roller, and a composite steel pressing roller. The composite adhesive pressing roller is located between the composite heating roller and the composite steel pressing roller. The composite steel pressing roller is used to support the composite adhesive pressing roller. The composite adhesive pressing roller presses the adhesive substrate and the adhesive film material onto the composite heating roller to form a composite material.

10. A substrate passivation coating composite production line according to claim 1, characterized in that, The first oven, the second oven, and the third oven have the same structure. The first oven is equipped with several third rollers and engraving rollers. The surface of the engraving rollers is provided with specific engraving patterns. The engraving rollers are located at the corners of the oven.

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