Film coating flattening and cooling mechanism and film coating system
By introducing the double cooling roller and double flat roll before and after cooling, the design of the film wrinkle and uneven cooling is solved, and high-quality coating effect is achieved, and the flatness and deposition efficiency of the film surface are improved.
Patent Information
- Application Number
- CN202422133725.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-08-30
AI Technical Summary
During the vacuum coating process, the traditional roller winding system is prone to wrinkles, white stripes and empty lines appear on the film surface, and uneven cooling leads to poor coating quality and low deposition efficiency.
A coating flattening cooling mechanism with double cooling rollers and double flattening rollers before and after cooling is adopted to ensure that the substrate is fully flattened and cooled before and after coating is coated. The substrate is flattened and cooled multiple times by setting up flattening and cooling rollers to improve surface flatness and cooling uniformity.
It effectively eliminates film wrinkles, white streaks and coating empty lines, improves coating quality and deposition efficiency, ensures a smooth and wrinkle-free substrate surface, and improves the uniformity and quality of the coating.
Smart Images
Figure CN223304537U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of lithium battery film production, in particular to a coating flattening cooling mechanism and a coating system. Background Art
[0002] Suspension evaporation winding coating is a technology that produces thin film materials by physical methods. In this method, the atoms of the material are separated from the heating source in a vacuum environment and adsorbed onto the surface of the object to be plated (such as a flexible substrate film, etc.). Under the action of tension control, the flexible substrate is suspended through the evaporation area above the evaporation source, and then a metal or non-metallic film is evaporated on the surface of the flexible substrate. The heat of the suspended substrate is transferred to the post-cooling main roller for cooling, and the coating process is completed by winding.
[0003] When vacuum coating is performed on a traditional roller winding system, the film surface may wrinkle due to the lack of flattening and insufficient unfolding before and after cooling. Moreover, if the cooling is uneven, the high-heat metal during coating will cause instant damage and wrinkling to the film material. White stripes and empty plating lines will appear in the middle of the wrinkles because the evaporated material cannot be deposited, resulting in low deposition efficiency, which directly affects product quality and production range.
[0004] In view of this, the purpose of this utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology, the utility model provides a coating flattening cooling mechanism and a coating system, which effectively solves the technical problems of the existing technology such as wrinkling of the film material, white stripes on the film material, empty coating lines on the foil material, poor coating quality, and low deposition efficiency.
[0006] The technical solution adopted by the utility model to solve its technical problems is:
[0007] A coating flattening and cooling mechanism comprises a unwinding roller and a winding roller, and along the tape path of the substrate, a first flattening roller, a first cooling roller, a second flattening roller, a third flattening roller, a second cooling roller and a fourth flattening roller are sequentially arranged between the unwinding roller and the winding roller, wherein, along the tape path of the substrate, the first flattening roller and the second flattening roller are respectively located on the front and rear sides of the first cooling roller, the third flattening roller and the fourth flattening roller are respectively located on the front and rear sides of the second cooling roller, and the substrate tape path area between the second flattening roller and the third flattening roller is the evaporation coating area.
[0008] As a further improvement of the above technical solution, the first flattening roller and the fourth flattening roller are arranged horizontally parallel, the second flattening roller and the third flattening roller are arranged horizontally parallel, and the first cooling roller and the second cooling roller are arranged horizontally parallel.
[0009] As a further improvement of the above technical solution, along the belt path of the substrate, a fifth flattening roller is provided between the unwinding roller and the first flattening roller, and a sixth flattening roller is provided between the fourth flattening roller and the winding roller.
[0010] As a further improvement of the above technical solution, along the belt path of the substrate, a first guide roller and a second guide roller are arranged between the unwinding roller and the fifth flattening roller, and a third guide roller and a fourth guide roller are arranged between the sixth flattening roller and the winding roller.
[0011] As a further improvement of the above technical solution, along the belt path of the substrate, a fifth guide roller, a sixth guide roller, a seventh guide roller and an eighth guide roller are arranged between the fifth flattening roller and the first flattening roller, and a ninth guide roller, a tenth guide roller, an eleventh guide roller and a twelfth guide roller are arranged between the fourth flattening roller and the sixth flattening roller.
[0012] As a further improvement of the above technical solution, the first flattening roller, the second flattening roller, the third flattening roller and the fourth flattening roller are all bent rollers or S rollers.
[0013] The utility model also provides:
[0014] A coating system comprises the coating flattening and cooling mechanism, and also comprises an evaporation source, wherein the evaporation source is arranged below the substrate walking path between the second flattening roller and the third flattening roller.
[0015] As a further improvement of the above technical solution, it also includes a coating chamber, wherein the first flattening roller, the second flattening roller, the third flattening roller, the fourth flattening roller, the first cooling roller, the second cooling roller and the evaporation source are all arranged in the coating chamber.
[0016] As a further improvement of the above technical solution, it also includes an unwinding chamber and a winding chamber, the unwinding roller is arranged in the unwinding chamber, and the winding roller is arranged in the winding chamber.
[0017] As a further improvement of the above technical solution, a coating chamber entrance and a coating chamber exit are respectively provided on both sides of the coating chamber, an unwinding chamber exit is provided on the side of the unwinding chamber, and a winding chamber entrance is provided on the side of the winding chamber. The position of the unwinding chamber exit matches the position of the coating chamber entrance, and the position of the coating chamber exit matches the position of the winding chamber entrance.
[0018] The beneficial effects of the present invention are as follows: the present invention provides a coating flattening and cooling mechanism and coating system, wherein a first flattening roller and a second flattening roller are respectively arranged before and after a first cooling roller, so that the substrate can be fully flattened before and after cooling, ensuring that the substrate surface is flat and wrinkle-free before and after pre-cooling, and improving the surface quality of the substrate during coating; a third flattening roller and a fourth flattening roller are arranged before and after the second cooling roller to ensure that the substrate surface is flat and wrinkle-free after the coating is cooled. This effectively eliminates film wrinkles, white streaks on the film, and coating lines on foil, thereby improving coating quality.
[0019] In summary, this coating flattening cooling mechanism and coating system effectively solve the technical problems of the existing technology such as film wrinkling, white stripes on the film, coating empty lines on the foil, poor coating quality, and low deposition efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1 It is an assembly diagram of the utility model. DETAILED DESCRIPTION
[0022] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present utility model can be combined interactively without conflicting with each other, refer to Figure 1 .
[0023] A coating flattening and cooling mechanism includes a unwinding roller 11 and a winding roller 12. Along the conveying path of the substrate 9, a first flattening roller 21, a first cooling roller 31, a second flattening roller 22, a third flattening roller 23, a second cooling roller 32 and a fourth flattening roller 24 are sequentially arranged between the unwinding roller 11 and the winding roller 12. Specifically, along the conveying path of the substrate 9, the first flattening roller 21 and the second flattening roller 22 are respectively located on the front and rear sides of the first cooling roller 31, and the third flattening roller 23 and the fourth flattening roller 24 are respectively located on the front and rear sides of the second cooling roller 32. The conveying path area of the substrate 9 between the second flattening roller 22 and the third flattening roller 23 is the evaporation coating area.
[0024] During application, the metal material inside the evaporation boat (evaporation source 5) is heated, and the metal material is vaporized and separated from the heating source under a vacuum environment and attached to the surface of the substrate 9. Here, two cooling rollers (a first cooling roller 31 and a second cooling roller 32) and four flattening rollers (a first flattening roller 21, a second flattening roller 22, a third flattening roller 23 and a fourth flattening roller 24) are set. Before coating, the substrate is first flattened by the first flattening roller 21, and then the substrate 9 is wrapped on the surface of the first cooling roller 31. The first cooling roller 31 pre-cools the surface of the substrate 9, and then the substrate 9 passes through the second flattening roller 22. The second flattening roller 22 flattens the substrate 9 after pre-cooling again to ensure that the surface of the substrate 9 before and after pre-cooling is flat and wrinkle-free, thereby improving the surface quality of the substrate 9 during coating. Then coating is carried out, and the coated substrate 9 also passes through the third flattening roller 23 first. The third flattening roller 23 first flattens the coated substrate 9, and then the substrate 9 is directly driven and wrapped on the surface of the second cooling roller 32 for cooling. At this time, the heat of the heated side of the coated material is quickly transferred to the other side, which is conducive to sufficient cooling of the substrate 9. After cooling, the substrate 9 passes through the fourth flattening roller 24, and the fourth flattening roller 24 flattens the substrate 9 again to ensure that the surface of the substrate 9 after coating and cooling is flat and wrinkle-free, thereby improving product quality.
[0025] In this technical solution, the substrate passes through the flattening rollers twice, before and after coating, to fully flatten the substrate, ensuring a smooth and wrinkle-free surface before and after film coating. Furthermore, the substrate is fully cooled between the two cooling rollers, facilitating the vapor deposition process.
[0026] Furthermore, the first flattening roller 21 is arranged horizontally parallel to the fourth flattening roller 24, the second flattening roller 22 is arranged horizontally parallel to the third flattening roller 23, and the first cooling roller 31 is arranged horizontally parallel to the second cooling roller 32. This horizontal parallel arrangement allows the substrate to be flattened and fully cooled before and after cooling, respectively.
[0027] Furthermore, along the substrate 9's path, a fifth flattening roller 25 is disposed between the unwinding roller 11 and the first flattening roller 21, and a sixth flattening roller 26 is disposed between the fourth flattening roller 24 and the winding roller 12. The fifth flattening roller 25 is located within the unwinding chamber 61, and the sixth flattening roller 26 is located within the winding chamber 62. In this embodiment, the fifth flattening roller 25 and the sixth flattening roller 26 are disposed horizontally symmetrically.
[0028] Preferably, along the substrate 9's path, a first guide roller 401 and a second guide roller 402 are disposed between the unwinding roller 11 and the fifth flattening roller 25, and a third guide roller 403 and a fourth guide roller 404 are disposed between the sixth flattening roller 26 and the winding roller 12. The first guide roller 401 and the second guide roller 402 are disposed within the unwinding chamber 61, while the third guide roller 403 and the fourth guide roller 404 are disposed within the winding chamber 62. The first guide roller 401 and the second guide roller 402 are symmetrically disposed with the third guide roller 403 and the fourth guide roller 404.
[0029] Preferably, along the conveying path of the substrate 9, a fifth guide roller 405, a sixth guide roller 406, a seventh guide roller 407, and an eighth guide roller 408 are disposed between the fifth flattening roller 25 and the first flattening roller 21, and a ninth guide roller 409, a tenth guide roller 410, an eleventh guide roller 411, and a twelfth guide roller 412 are disposed between the fourth flattening roller 24 and the sixth flattening roller 26. The fifth guide roller 405, the sixth guide roller 406, the seventh guide roller 407, the eighth guide roller 408, the ninth guide roller 409, the tenth guide roller 410, the eleventh guide roller 411, and the twelfth guide roller 412 are all disposed in the coating chamber 63. The fifth guide roller 405, the sixth guide roller 406, the seventh guide roller 407, the eighth guide roller 408 and the ninth guide roller 409, the tenth guide roller 410, the eleventh guide roller 411, and the twelfth guide roller 412 are symmetrically disposed in the coating chamber 63.
[0030] In this embodiment, the first flattening roller 21, the second flattening roller 22, the third flattening roller 23, the fourth flattening roller 24, the fifth flattening roller 25, and the sixth flattening roller 26 are all bent rollers or S-shaped rollers. The first guide roller 401, the second guide roller 402, the third guide roller 403, the fourth guide roller 404, the fifth guide roller 405, the sixth guide roller 406, the seventh guide roller 407, the eighth guide roller 408, the ninth guide roller 409, the tenth guide roller 410, the eleventh guide roller 411, and the twelfth guide roller 412 are all aluminum guide rollers.
[0031] Based on the above-mentioned coating flattening cooling mechanism, the utility model also provides:
[0032] A coating system includes the coating flattening and cooling mechanism, and also includes an evaporation source 5, which is arranged below the substrate 9 walking path between the second flattening roller 22 and the third flattening roller 23.
[0033] This coating system also includes a coating chamber 63, an unwinding chamber 61, and a winding chamber 62. The first flattening roller 21, the second flattening roller 22, the third flattening roller 23, the fourth flattening roller 24, the first cooling roller 31, the second cooling roller 32, and the evaporation source 5 are all arranged in the coating chamber 63. The unwinding roller 11 is arranged in the unwinding chamber 61, and the winding roller 12 is arranged in the winding chamber 62. A coating chamber entrance and a coating chamber exit are respectively provided on both sides of the coating chamber 63. The unwinding chamber 61 is provided with an unwinding chamber exit on the side, and the winding chamber 62 is provided with a winding chamber entrance on the side. The position of the unwinding chamber exit matches the position of the coating chamber entrance, and the position of the coating chamber exit matches the position of the winding chamber entrance.
[0034] In specific applications, the unwinding roller 11 unwinds the substrate 9, and the substrate 9 successively bypasses the first guide roller 401, the second guide roller 402, the fifth flattening roller 25, and the fifth guide roller 405, and then passes through the unwinding chamber exit and the coating chamber entrance and enters the coating chamber 63. The substrate 9 entering the coating chamber 63 successively bypasses the sixth guide roller 406, the seventh guide roller 407, the eighth guide roller 408, the first flattening roller 21, the first cooling roller 31, the second flattening roller 22, the third flattening roller 23, the second cooling roller 32, the fourth flattening roller 24, the ninth guide roller 409, the tenth guide roller 410, and the eleventh guide roller 411, and then passes through the coating chamber exit and the winding chamber entrance. After the substrate 9 enters the winding chamber 62, the substrate 9 successively bypasses the twelfth guide roller 412, the sixth flattening roller 26, the third guide roller 403 and the fourth guide roller 404, and is finally wound up by the winding roller 12. When the substrate 9 passes through the coating area between the second flattening roller 22 and the third flattening roller 23 , the evaporation source 5 operates and coats the surface of the substrate 9 .
[0035] The technical solution provided by the present invention adopts a suspended coating design of double cooling rollers and double flattening rollers before and after cooling in this device, which solves the problems of local wrinkling, white stripes and empty coating lines caused by traditional roller winding coating on film materials. The suspended coating of double cooling rollers and double flattening rollers before and after the cooling rollers is adopted to improve the coating speed and ensure the surface quality of the substrate 9. The substrate can be completely flattened under the action of the double cooling rollers and the double flattening rollers before and after the cooling rollers, ensuring that the concentration of the evaporated material is more uniform when it rises to the surface of the film material, and the uniformity of the coating is effectively improved, overcoming the defects of insufficient cooling in the existing equipment, and uneven and wrinkled surface of the film material before and after cooling, thereby generating white stripes, and effectively ensuring the quality of the coating.
[0036] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A coating flattening cooling mechanism, characterized by: The invention comprises a unwinding roller (11) and a winding roller (12), and a first flattening roller (21), a first cooling roller (31), a second flattening roller (22), a third flattening roller (23), a second cooling roller (32) and a fourth flattening roller (24) are sequentially arranged between the unwinding roller (11) and the winding roller (12) along the tape path of the substrate (9), wherein, along the tape path of the substrate (9), the first flattening roller (21) and the second flattening roller (22) are respectively located on the front and rear sides of the first cooling roller (31), the third flattening roller (23) and the fourth flattening roller (24) are respectively located on the front and rear sides of the second cooling roller (32), and the tape path area of the substrate (9) between the second flattening roller (22) and the third flattening roller (23) is an evaporation coating area.
2. The coating flattening and cooling mechanism according to claim 1, characterized in that: The first flattening roller (21) and the fourth flattening roller (24) are arranged horizontally and parallelly, the second flattening roller (22) and the third flattening roller (23) are arranged horizontally and parallelly, and the first cooling roller (31) and the second cooling roller (32) are arranged horizontally and parallelly.
3. The coating flattening and cooling mechanism according to claim 1, characterized in that: Along the tape path of the substrate (9), a fifth flattening roller (25) is provided between the unwinding roller (11) and the first flattening roller (21), and a sixth flattening roller (26) is provided between the fourth flattening roller (24) and the winding roller (12).
4. The coating flattening and cooling mechanism according to claim 3, characterized in that: Along the tape path of the substrate (9), a first guide roller (401) and a second guide roller (402) are arranged between the unwinding roller (11) and the fifth flattening roller (25), and a third guide roller (403) and a fourth guide roller (404) are arranged between the sixth flattening roller (26) and the winding roller (12).
5. The coating flattening and cooling mechanism according to claim 3, characterized in that: Along the belt path of the substrate (9), a fifth guide roller (405), a sixth guide roller (406), a seventh guide roller (407) and an eighth guide roller (408) are arranged between the fifth flattening roller (25) and the first flattening roller (21), and a ninth guide roller (409), a tenth guide roller (410), an eleventh guide roller (411) and a twelfth guide roller (412) are arranged between the fourth flattening roller (24) and the sixth flattening roller (26).
6. A coating flattening and cooling mechanism according to any one of claims 1 to 5, characterized in that: The first flattening roller (21), the second flattening roller (22), the third flattening roller (23) and the fourth flattening roller (24) are all bent rollers or S rollers.
7. A coating system, characterized in that: The coating system includes the coating flattening and cooling mechanism according to any one of claims 1 to 5, and also includes an evaporation source (5), wherein the evaporation source (5) is arranged below the substrate (9) walking path between the second flattening roller (22) and the third flattening roller (23).
8. The coating system according to claim 7, characterized in that: It also includes a coating chamber (63), wherein the first flattening roller (21), the second flattening roller (22), the third flattening roller (23), the fourth flattening roller (24), the first cooling roller (31), the second cooling roller (32) and the evaporation source (5) are all arranged in the coating chamber (63).
9. The coating system according to claim 8, characterized in that: It also includes an unwinding chamber (61) and a winding chamber (62), wherein the unwinding roller (11) is arranged in the unwinding chamber (61), and the winding roller (12) is arranged in the winding chamber (62).
10. The coating system according to claim 9, characterized in that: The coating chamber (63) is provided with a coating chamber entrance and a coating chamber exit on both sides, the unwinding chamber (61) is provided with an unwinding chamber exit on the side, and the winding chamber (62) is provided with a winding chamber entrance on the side. The position of the unwinding chamber exit matches the position of the coating chamber entrance, and the position of the coating chamber exit matches the position of the winding chamber entrance.