Coating device

Abstract

The utility model discloses a coating device. The coating device comprises a coating roller, a material box, a film pressing assembly and a scraper mechanism, the coating roller and the scraper mechanism are used in cooperation, it is ensured that a uniform coating is formed on the surface of the coating roller through a separant, the scraper mechanism effectively removes the redundant separant, the uniformity of the coating on the surface of the coating roller is ensured, and the problem that the coating is too thick or not uniform is solved. And the bearing film is ensured to be in contact with the separant coating on the surface of the coating roller through the film pressing assembly to realize uniform coating, so that the bonding force between the lithium strip and the PET base material in the copper-lithium compounding process is effectively controlled, the damage of the lithium foil in the production process is reduced, and the overall quality and the production efficiency of a compounded product are improved.

Description

Technical Field

[0001] This utility model relates to a lithium battery processing equipment, and more particularly to a coating device. Background Technology

[0002] In the copper-lithium lamination process, excessive adhesion between the lithium strip and the PET substrate can lead to breakage of the lithium foil during lamination. Existing technologies reduce adhesion by coating the lithium strip surface with a release agent, thereby decreasing the probability of lithium foil breakage. However, existing coating equipment has some shortcomings, such as uneven coating thickness and low efficiency, which limit the stability of the production process and the consistency of product quality. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a coating device with high uniformity and high efficiency in the coating of release agent.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A coating apparatus, comprising:

[0006] A coating roller and its base, wherein the coating roller is mounted on the base;

[0007] The material box is fixed on the base and located below the coating roller. It is used to store the release agent. The lower roller surface of the coating roller can be immersed in the material box and contact the release agent. When the coating roller rotates, the release agent forms a coating on the surface of the coating roller.

[0008] The film pressing assembly, located above the coating roller, guides the carrier film and brings it into contact with one side of the coating roller, ensuring that the carrier film is in contact with the release agent coating on the surface of the coating roller.

[0009] The doctor blade mechanism is located on the rotation path of the coating roller from the material box to the carrier film;

[0010] The doctor blade mechanism fits tightly with the surface of the coating roller to remove excess release agent from the coating roller and ensure the uniformity of the coating.

[0011] Furthermore, the mounting plate and the scraper disposed on the mounting plate and abutting against the coating roller, the mounting plate having pivots at both ends, the mounting plate being pivotally connected to the base via the pivots;

[0012] The base is provided with an adjusting pressure plate, and the adjusting pressure plate is provided with a first adjusting component. The first adjusting component can act on the mounting plate to adjust the contact pressure of the doctor blade on the surface of the coating roller, thereby controlling the coating thickness.

[0013] Furthermore, the pivots are located on both sides of the mounting plate near the scraper;

[0014] The first adjusting member abuts against the mounting plate on the side away from the scraper.

[0015] The first adjusting component is a first adjusting bolt. The adjusting pressure plate is provided with an internal thread that mates with the first adjusting bolt. Rotating the first adjusting bolt can adjust the pressure of the first adjusting bolt relative to the mounting plate, thereby adjusting the contact pressure of the scraper on the surface of the coating roller and realizing the control of the coating thickness.

[0016] Furthermore, it also includes an upper pressure plate and a lower pressure plate, with the scraper fixedly disposed between the upper pressure plate and the lower pressure plate;

[0017] The lower pressure plate is movably connected to the mounting plate;

[0018] The mounting plate is provided with at least one second adjusting member on the side away from the lower pressure plate;

[0019] The second adjusting member can act on the lower pressure plate so that the doctor blade is in complete contact with the roller surface of the coating roller.

[0020] Furthermore, the second adjusting member includes a mounting block located on the side of the mounting plate away from the lower pressure plate, and a second adjusting bolt threadedly connected to the mounting block;

[0021] Rotate the second adjusting bolt, which abuts against the lower pressure plate, causing the scraper to press against the coating roller.

[0022] Furthermore, the film pressing assembly includes a film pressing frame and two film pressing rollers disposed on the film pressing frame;

[0023] The base is provided with a guide rail, and the pressing frame is provided with a slide that cooperates with the guide rail;

[0024] The base is provided with a driving component, which can drive the film pressing frame to move closer to or away from the coating roller along the guide rail.

[0025] Furthermore, the guide rail is angled relative to the horizontal plane and positioned on the base.

[0026] A stop is provided on one end of the guide rail, located on the base.

[0027] The pressing frame is fixed above the slide by a connecting block. One side of the connecting block is positioned opposite the stop portion, and a pad is provided between the connecting block and the stop portion.

[0028] Furthermore, the base is provided with an external material box, which is connected to the material box and is used to replenish the material box with a release agent.

[0029] Furthermore, the external container is equipped with an ultrasonic proximity sensor, which is located above the liquid surface of the release agent and is used to detect the amount of oil in the external container.

[0030] Furthermore, the separating agent is silicone oil.

[0031] The beneficial effects of this utility model are:

[0032] The coating device of this invention utilizes a coating roller and a doctor blade mechanism in combination to ensure that the release agent forms a uniform coating on the surface of the coating roller. The doctor blade mechanism effectively removes excess release agent, ensuring the uniformity of the coating on the coating roller surface and avoiding problems such as excessively thick or uneven coatings. Furthermore, the pressing assembly ensures contact between the carrier film and the release agent coating on the coating roller surface, achieving uniform coating. This effectively controls the adhesion between the lithium strip and the PET substrate during the copper-lithium lamination process, reducing lithium foil breakage during production and improving the overall quality and production efficiency of the composite products. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0035] Figure 2 This is a schematic cross-sectional view of the present invention;

[0036] Figure 3 This is a structural breakdown diagram of the scraper mechanism of this utility model;

[0037] Figure 4 This is a schematic diagram showing the positions of the doctor blade and the coating roller of this utility model.

[0038] in,

[0039] 100. Coating roller;

[0040] 200. Base; 210. Adjusting pressure plate; 220. First adjusting component; 230. Guide rail; 240. Stop; 250. Driving component; 260. Pad block;

[0041] 300. Material box;

[0042] 400. Film pressing assembly; 410. Film pressing frame; 411. Film pressing roller; 420. Slide block; 430. Connecting block;

[0043] 500. Scraper mechanism; 510. Mounting plate; 511. Pivot column; 520. Second adjusting component; 530. Mounting block; 540. Scraper; 550. Upper pressure plate; 560. Lower pressure plate;

[0044] 600. External material box;

[0045] 700. Ultrasonic proximity sensor;

[0046] 800, carrier membrane;

[0047] 900. Electric motor. Detailed Implementation

[0048] 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.

[0049] During the thinning process of lithium strip, a release agent is applied to the surface of the lithium strip to reduce adhesion, thus addressing the problems of excessive adhesion between the lithium strip and the PET substrate, and the easy breakage of lithium foil during the lamination process in existing technologies. The coating device of this invention can achieve efficient and uniform release agent coating, thereby ensuring effective control of the adhesion between the lithium strip and the PET substrate during copper-lithium lamination, reducing lithium foil breakage during production, and improving the overall quality and production efficiency of the composite product.

[0050] A coating apparatus, as shown in the reference Figure 1-4The system includes: a coating roller 100 and its base 200, wherein the coating roller 100 is mounted on the base 200; a material box 300, which is fixed on the base 200 and located below the coating roller 100, for storing a release agent, wherein the lower roller surface of the coating roller 100 can be immersed in the material box 300 to contact the release agent, and when the coating roller 100 rotates, the release agent forms a coating on the surface of the coating roller 100; a film pressing assembly 400, located above the coating roller 100, for guiding a carrier film 800 and contacting one side of the coating roller 100, ensuring that the carrier film 800 contacts the release agent coating on the surface of the coating roller 100; and a doctor blade mechanism 500, disposed on the rotation path of the coating roller 100 from the material box 300 to the carrier film 800; the doctor blade mechanism 500 is in close contact with the surface of the coating roller 100, for removing excess release agent on the coating roller 100, ensuring the uniformity of the coating. Understandably, as the coating roller 100 rotates, the release agent adheres to the surface of the coating roller 100. Then, the doctor blade mechanism 500 is used to precisely control the coating thickness to avoid uneven or excessive coating. Afterward, the film pressing assembly 400 ensures that the carrier film 800 contacts the release agent coating on the surface of the coating roller 100, achieving uniform coating. This ensures that the adhesion between the lithium strip and the PET substrate is effectively controlled during the copper-lithium composite process, reducing lithium foil breakage during production and improving the overall quality and production efficiency of the composite products.

[0051] In this invention, the coating roller 100 is preferably a gravure roller, which is rotatably connected to the base 200. In some embodiments, a motor 900 is located at one end of the base 200, driving the coating roller 100 to rotate. Furthermore, the release agent needs to possess characteristics such as isolation performance, lubricity, chemical stability, and ease of coating; in this case, silicone oil is preferred. Specifically, when the motor 900 drives the gravure roller to rotate, the silicone oil in the material box 300 is carried out as the roller surface rotates. Subsequently, the scraper mechanism 500 closely cooperates with the surface of the gravure roller to remove excess silicone oil, ensuring the uniformity of the silicone oil. Finally, the gravure roller rotates to contact the carrier film 800, uniformly coating the oil on the gravure roller onto the carrier film 800, forming a continuous and uniform silicone oil coating, avoiding product quality problems caused by uneven coating. This coating equipment optimizes the production process and reduces material waste through standardized mechanized coating, meeting the demands of modern industrial production for high efficiency, high precision, and environmentally friendly processes. The scraper 540 is preferably made of plastic.

[0052] In some embodiments, refer to Figure 1 , 23. The scraper mechanism 500 includes: a mounting plate 510 and a scraper 540 disposed on the mounting plate 510 and abutting against the coating roller 100. The mounting plate 510 has pivots 511 at both ends, and the mounting plate 510 is pivotally connected to the base 200 through the pivots 511. The base 200 is provided with an adjusting pressure plate 210, and the adjusting pressure plate 210 is provided with a first adjusting member 220. The first adjusting member 220 can act on the bottom of the mounting plate 510, thereby adjusting the contact pressure of the scraper 540 on the surface of the coating roller 100 to ensure that the scraper can scrape off excess silicone oil. It can be understood that the mounting plate 510 is pivotally connected to the base 200 through the pivots 511 at both ends, and the mounting plate 510 can rotate relative to the base 200 along the pivots 511. When the doctor blade 540 contacts the upper roller surface of the coating roller 100, the first adjusting member 220 causes the doctor blade 540 to move downward, thereby increasing the pressure of the doctor blade 540 on the roller surface; when the first adjusting member 220 causes the doctor blade 540 to move upward, the doctor blade 540 can be disengaged from the roller surface, facilitating film threading or blade replacement. In a specific embodiment, refer to... Figure 4 Preferably, the doctor blade 540 contacts the upper roller surface of the coating roller 100.

[0053] Specifically, refer to Figure 3 The pivot 511 is located on both sides of the mounting plate 510 near the scraper 540; the first adjusting member 220 abuts against the bottom of the mounting plate 510, away from the scraper 540; the first adjusting member 220 is a first adjusting bolt, and the adjusting pressure plate 210 is provided with an internal thread that mates with the first adjusting bolt. Rotating the first adjusting bolt adjusts the pressure of the first adjusting bolt relative to the mounting plate 510, thereby adjusting the contact pressure of the scraper 540 on the surface of the coating roller 100, ensuring that the scraper can remove excess oil while having sufficient service life. It is understood that when the first adjusting bolt is rotated, the end of the first adjusting bolt provides upward pressure to one side of the mounting plate 510, and through the lever principle, the scraper 540 applies greater downward pressure to the surface of the coating roller 100. By controlling the contact force between the scraper 540 and the coating roller 100, the uniformity of the oil layer on the gravure roller is affected. The use of threaded adjustment provides a smooth and gradual adjustment method, ensuring the accuracy and repeatability of coating thickness adjustment. Furthermore, this adjustment method provides a sufficient range of adjustment to adapt to different coating requirements and material properties, increasing the flexibility and applicability of the equipment.

[0054] Furthermore, continue to refer to Figure 3The system also includes an upper pressure plate 550 and a lower pressure plate 560. The doctor blade 540 is fixedly disposed between the upper pressure plate 550 and the lower pressure plate 560. The lower pressure plate 560 is movably connected to the mounting plate 510. At least one second adjusting member 520 is provided on the side of the mounting plate 510 away from the lower pressure plate 560. The second adjusting member 520 can act on the lower pressure plate 560, so that the doctor blade 540 is in complete contact with the roller surface of the coating roller 100. The doctor blade 540 is fixed between the upper and lower pressure plates 560, which facilitates the replacement and maintenance of the doctor blade 540, helps to reduce downtime and improve production efficiency. In addition, different doctor blades 540 can be replaced according to different coating requirements and material characteristics. Furthermore, the upper pressure plate 550 and the lower pressure plate 560 provide stable support for the doctor blade 540, reducing the vibration and sway of the doctor blade 540 during operation, improving the coating accuracy, and making the pressure of the doctor blade 540 on the roller surface linear, resulting in more uniform oil scraping. The lower pressure plate 560 and the mounting plate 510 are movably connected. When the scraper 540 does not make uniform or complete contact with the roller surface, the position of the lower pressure plate 560 can be adjusted by the second adjusting member 520, thereby adjusting the scraper 540 to make complete contact with the roller surface. Of course, there can be one or more second adjusting members 520.

[0055] Furthermore, the second adjusting member 520 includes a mounting block 530 located on the side of the mounting plate 510 away from the lower pressure plate 560, and a second adjusting bolt threadedly connected to the mounting block 530. Rotating the second adjusting bolt causes it to abut against the lower pressure plate 560, thereby pressing the doctor blade 540 against the coating roller 100. Understandably, when the second adjusting bolt is tightened, it pushes the lower pressure plate 560 to move along the roller surface, allowing precise control of the contact pressure between the doctor blade 540 and the coating roller 100, and the contact between the doctor blade and the roller surface. By rotating the second adjusting bolt, fine adjustments can be made to the displacement of the doctor blade 540 on the coating roller 100, ensuring the uniformity and quality of the coating. This design not only improves the accuracy of the coating process but also allows the operator to quickly adjust the pressure as needed, optimizing production efficiency and product quality.

[0056] In some embodiments, refer to Figure 1 , 2The film-pressing assembly 400 includes a film-pressing frame 410 and two film-pressing rollers 411 rotatably mounted on the film-pressing frame 410. A guide rail 230 is provided on the base 200, and a slide block 420 cooperating with the guide rail 230 is provided on the film-pressing frame 410. A driving member 250 is provided on the base 200, which can drive the film-pressing frame 410 along the guide rail 230 to move closer to or further away from the coating roller 100. By driving the film-pressing frame 410 along the guide rail 230, the pressure and contact area between the film-pressing rollers 411 and the carrier film 800 and the coating roller 100 can be precisely adjusted, ensuring uniform contact between the release agent coating on the surface of the carrier film 800 and the coating roller 100. Furthermore, the two film-pressing rollers 411 work together to uniformly guide the carrier film 800 through the coating area, reducing air bubbles and unevenness, and improving coating quality. In some embodiments, the drive unit 250 can also be connected to a control system to achieve automated control of the entire coating process, improving the convenience and repeatability of operation. The pressure roller 411 is a PET oiling pressure roller.

[0057] Furthermore, the guide rail 230 is angled relative to the horizontal plane and positioned on the base 200, with a stop 240 located on one end of the guide rail 230 on the base 200. The film pressing frame 410 is fixed above the slide block 420 via a connecting block 430, with one side of the connecting block 430 positioned relative to the stop 240. A pad 260 is provided between the connecting block 430 and the stop 240. It is understood that when the driving member 250 drives the film pressing frame 410 to a predetermined position, the pad 260 is placed between the connecting block 430 and the stop 240. The pad 260 maintains a fixed distance between the film pressing frame 410 and the roller surface, thereby controlling the contact area and angle between the carrier film 800 and the coating roller 100, preventing displacement or deviation caused by external forces. Furthermore, the use of the pad 260 simplifies the maintenance and adjustment process, facilitating quick position calibration by the operator. In some embodiments, the position of the pad 260 can be quickly adjusted according to different coating requirements, or the size and thickness of the pad 260 can be quickly adjusted according to different coating requirements, thereby improving the adaptability and flexibility of the equipment.

[0058] In some embodiments, refer to Figure 1 The base 200 is equipped with an external material box 600, which communicates with the material box 300. The external material box 600 is used to replenish the release agent in the material box 300. The external material box 600 ensures a continuous supply of release agent in the material box 300 during the coating process, avoiding production interruptions due to the depletion of release agent in the material box 300. In addition, the external material box 600 helps maintain a stable release agent level during the coating process, thereby maintaining the consistency of the coating thickness and ensuring product quality.

[0059] Furthermore, referring to Figure 1 An ultrasonic proximity sensor 700 is installed on the external material box 600, positioned above the liquid surface of the release agent, to detect the oil level within the external material box 600. By monitoring the liquid level and quality of the release agent using the ultrasonic proximity sensor 700, regular inspection and maintenance are facilitated, ensuring the long-term stable operation of the equipment. Furthermore, the high-precision measurement capability of the ultrasonic sensor accurately detects the oil level, ensuring the stability and continuity of the release agent supply during the coating process. In some embodiments, the real-time monitoring by the ultrasonic proximity sensor 700 can be combined with an automatic control system to achieve automated control of release agent replenishment, improving production efficiency and reducing manual intervention.

[0060] 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 coating apparatus, characterized in that, include: A coating roller and its base, wherein the coating roller is mounted on the base; The material box is fixed on the base and located below the coating roller. It is used to store the release agent. The lower roller surface of the coating roller can be immersed in the material box and contact the release agent. When the coating roller rotates, the release agent forms a coating on the surface of the coating roller. The film pressing assembly, located above the coating roller, guides the carrier film and brings it into contact with one side of the coating roller, ensuring that the carrier film is in contact with the release agent coating on the surface of the coating roller. A doctor blade mechanism is disposed on the rotation path of the coating roller from the material box to the carrier film; the doctor blade mechanism is in close contact with the surface of the coating roller to remove excess release agent on the coating roller and ensure the uniformity of the coating.

2. The coating apparatus according to claim 1, characterized in that, The scraper mechanism includes: a mounting plate and a scraper disposed on the mounting plate and abutting against the coating roller; the mounting plate has pivots at both ends, and the mounting plate is pivotally connected to the base through the pivots. The base is provided with an adjusting pressure plate, and the adjusting pressure plate is provided with a first adjusting component. The first adjusting component can act on the mounting plate to adjust the contact pressure of the doctor blade on the surface of the coating roller, thereby controlling the coating thickness.

3. The coating apparatus according to claim 2, characterized in that, The pivot is located on both sides of the mounting plate near the scraper; the first adjusting member abuts against the mounting plate on the side away from the scraper; the first adjusting member is a first adjusting bolt, and the adjusting pressure plate is provided with an internal thread that mates with the first adjusting bolt. Rotating the first adjusting bolt can adjust the pressure of the first adjusting bolt relative to the mounting plate, thereby adjusting the contact pressure of the scraper on the surface of the coating roller and realizing the control of the coating thickness.

4. The coating apparatus according to claim 2, characterized in that, It also includes an upper pressure plate and a lower pressure plate, with the scraper fixedly disposed between the upper pressure plate and the lower pressure plate; the lower pressure plate is movably connected to the mounting plate; at least one second adjusting member is provided on the side of the mounting plate away from the lower pressure plate; the second adjusting member can act on the lower pressure plate so that the scraper is in complete contact with the roller surface of the coating roller.

5. The coating apparatus according to claim 4, characterized in that, The second adjusting component includes a mounting block located on the side of the mounting plate away from the lower pressure plate, and a second adjusting bolt threadedly connected to the mounting block; rotating the second adjusting bolt causes it to abut against the lower pressure plate, thereby pressing the scraper against the coating roller.

6. The coating apparatus according to claim 1, characterized in that, The film pressing assembly includes a film pressing frame and two film pressing rollers disposed on the film pressing frame; a guide rail is provided on the base, and a slide seat that cooperates with the guide rail is provided on the film pressing frame; a driving member is provided on the base, and the driving member can drive the film pressing frame to move closer to or away from the coating rollers along the guide rail.

7. The coating apparatus according to claim 6, characterized in that, The guide rail is set at an angle relative to the horizontal plane on the base, and a stop is provided on one end of the guide rail on the base; the pressing frame is fixed above the slide by a connecting block, one side of the connecting block is set relative to the stop, and a pad is provided between the connecting block and the stop.

8. The coating apparatus according to claim 1, characterized in that, The base is provided with an external material box, which is connected to the material box and is used to replenish the material box with a release agent.

9. The coating apparatus according to claim 8, characterized in that, An ultrasonic proximity sensor is provided on the external material box. The ultrasonic proximity sensor is located above the liquid surface of the release agent and is used to detect the amount of oil in the external material box.

10. The coating apparatus according to any one of claims 1-9, characterized in that, The release agent is silicone oil.

Images