Induction type heating vacuum winding coating system

Abstract

The utility model discloses an induction type heating vacuum winding coating system, which relates to the technical field of base film coating, and comprises a base film, an unwinding roller, a winding roller, a coating drum, a plasma processing system, a cryogenic device, an induction type evaporation device and a coating baffle, the coating drum is arranged between the unwinding roller and the winding roller; the plasma treatment system is arranged between the unwinding roller and the coating drum and is close to the unwinding roller; the deep cooling device is arranged in the coating drum; the induction type evaporation device is arranged close to the coating drum; the coating baffle is arranged between the induction type evaporation device and the coating drum; the base film is unwound by the unwinding roller, coated by the coating drum and wound by the winding roller. The induction type heating device has the advantages that induction type heating can be achieved, it is guaranteed that the temperature is more stable, and adaptability is higher.

Description

Technical Field

[0001] This utility model relates to the field of base film coating technology, and more specifically, to an induction heating vacuum winding coating system. Background Technology

[0002] The development of roll-to-roll vacuum coating in the new energy industry is showing a booming trend, playing a particularly important role in the manufacturing of key components such as solar cells and lithium-ion batteries. Continuous technological advancements have improved coating efficiency and quality, meeting the new energy industry's demand for high-performance, high-efficiency materials.

[0003] Therefore, this utility model provides an induction heating vacuum winding coating system that can achieve induction heating, ensuring more stable temperature and stronger adaptability. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides an induction heating vacuum winding coating system that can achieve induction heating, ensuring more stable temperature and stronger adaptability.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an induction heating vacuum winding coating system, the improvement of which is that the induction heating vacuum winding coating system includes a base film, an unwinding roller, a winding roller, a coating drum, a plasma treatment system, a cryogenic device, an induction evaporation device, and a coating baffle; the coating drum is disposed between the unwinding roller and the winding roller; the plasma treatment system is disposed between the unwinding roller and the coating drum, and close to the unwinding roller; the cryogenic device is disposed inside the coating drum; the induction evaporation device is disposed close to the coating drum; the coating baffle is disposed between the induction evaporation device and the coating drum; the base film is unwound by the unwinding roller, coated by the coating drum, and wound up by the winding roller.

[0006] In the above structure, the induction heating vacuum winding coating system further includes a flattening roller, which is distributed between the coating drum and the unwinding roller and between the winding roller and the coating drum, for flattening the base film.

[0007] In the above structure, the induction heating vacuum winding coating system further includes a tension roller, which is distributed between the coating drum and the unwinding roller and between the winding roller and the coating drum, for adjusting the tension of the base film.

[0008] In the above structure, the induction heating vacuum winding coating system further includes a bending roller, and the tension roller is distributed between the coating drum and the unwinding roller and between the winding roller and the coating drum, for adjusting the conveying position of the base film.

[0009] In the above structure, the induction heating vacuum winding coating system further includes a traction roller, which is disposed between the take-up roller and the coating drum and close to the coating drum, for traction of the base film and control of the base film conveying speed.

[0010] In the above structure, the induction evaporation device includes a plurality of crucibles arranged in an array.

[0011] In the above structure, the tension roller is equipped with a tension sensor, which is fixedly installed on the roller shaft of the tension roller to monitor the tension of the base film.

[0012] The beneficial effects of this utility model are as follows: This solution achieves unwinding, coating, and rewinding of the base film through the cooperation of the unwinding roller, flattening roller, tension roller, bending roller, traction roller, coating drum, and rewinding roller; it achieves inductive heating of the base film and metal coating material through an induction evaporation device, which has significant advantages over traditional resistance heating in terms of heating efficiency, safety, stability, heating speed, and flexibility; it protects the base film through an evaporation baffle and regulates the surface temperature of the base film through a deep cooling device to maintain the stability of the film surface temperature; and it has a plasma treatment system designed near the unwinding roller to achieve oxide coating; therefore, this embodiment can achieve inductive heating, ensuring more stable temperature and stronger adaptability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an induction heating vacuum winding coating system according to the present invention. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] 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.

[0016] Reference Figure 1This utility model discloses an induction heating vacuum winding coating system, which includes a base film, an unwinding roller 1, a take-up roller 11, a coating drum 8, a flattening roller 2, a tension roller 3, a bending roller 5, a traction roller 10, a plasma treatment system 4, a cryogenic device 9, an induction evaporation device 6, and a coating baffle 7. The coating drum 8 is disposed between the unwinding roller 1 and the take-up roller 11; the flattening roller 2, the tension roller 3, and the bending roller 5 are distributed between the coating drum 8 and the unwinding roller 1, and between the take-up roller 11 and the coating drum 8; the traction roller 10 is disposed between the unwinding roller 1 and the take-up roller 11, and between the unwinding roller 11 and the coating drum 8. The plasma treatment system 4 is located between the unwinding roller 11 and the coating drum 8, and is located close to the unwinding roller 1; the cryogenic device 9 is located inside the coating drum 8; the induction evaporation device 6 is located close to the coating drum 8; the coating baffle 7 is located between the induction evaporation device 6 and the coating drum 8; the base film is unwound by the unwinding roller 1, guided to the coating drum 8 for coating by the flattening roller 2, tension roller 3 and bending roller 5, and then guided to the take-up roller 11 for take-up by the flattening roller 2, tension roller 3, bending roller 5 and traction roller 10.

[0017] It should be noted that, in this embodiment, the induction high-vacuum roll-to-roll coating system consists of one unwinding roller 1, six flattening rollers 2, four tension rollers 3, a plasma treatment system 4, three bending rollers 5, one coating drum 8, a cryogenic device 9 (inside the coating drum 8), one traction roller 10, one take-up roller 11, a coating baffle 7, and an evaporation coating device. The unwinding roller 1 and take-up roller 11 are used to unwind and rewind the base film; the flattening roller 2 is used to flatten the base film, making... Its surface is smooth, preventing wrinkles or fluctuations in the base film during the coating process; tension roller 3 is used to adjust the tension of the base film, keeping it transported smoothly throughout the coating process and preventing overstretching or slack; bending roller 5 is used to guide the base film to the correct position on the coating drum 8, adjusting the path of the base film to ensure it passes smoothly through the coating area; traction roller 10 is mainly used to control the conveying speed of the base film to maintain its smooth movement during the coating process; plasma treatment system 4 is used to release plasma gas. The coating zone consists of a coating drum 8, a coating baffle 7, a cryogenic device 9, and an induction evaporation device 6. The coating drum 8 guides the base film to the area near the induction evaporation device 6, and its diameter is between 500mm and 700mm, and its length is between 1600mm and 2000mm. The induction evaporation device 6 heats the base film and the coating metal material, causing the coating metal material to evaporate and form vapor. The vapor then deposits onto the heated base film surface to form the base film coating. The coating baffle 7 protects the base film from prolonged high-temperature baking during heating and parameter adjustment, preventing cracking. The cryogenic device 9 regulates the surface temperature of the base film. The cryogenic device 9 uses silicone oil as the refrigerant, and the surface temperature of the base film is controlled between -20℃ and 30℃, with a control accuracy between -1℃ and 1℃, to ensure minimal loss of the base film's physical properties in high-temperature environments. In the specific implementation of this utility model, the base film is unwound by the unwinding roller 1, guided by the flattening roller 2, tension roller 3, and bending roller 5 to the coating drum 8 for coating, and then guided by the flattening roller 2, tension roller 3, bending roller 5, and traction roller 10 to the winding roller 11 for winding. The unwinding roller 1, flattening roller 2, tension roller 3, bending roller 5, traction roller 10, coating drum 8, and winding roller 11 cooperate with each other to realize the unwinding, coating, and winding of the base film. The induction evaporation device 6 realizes induction heating of the base film and the metal coating material. Compared with traditional resistance heating, induction heating has significant advantages in terms of heating efficiency, safety, stability, heating speed, and flexibility. The base film is protected by the evaporation baffle, and the film surface temperature of the base film is regulated by the deep cooling device 9 to maintain the stability of the film surface temperature. In addition, a plasma treatment system 4 is designed near the unwinding roller 1 to realize oxide coating. Therefore, this embodiment can realize induction heating, ensuring more stable temperature and stronger adaptability.

[0018] It should also be noted that in this embodiment, the flattening rollers 2 are connected by chains and gears and are equipped with servo motors for power output; the coating drum 8, unwinding roller 1 and winding roller 11 are driven by independent motors, so that the coating speed of the induction heating vacuum winding coating system is between 50m / min and 400m / min.

[0019] It should also be noted that in this embodiment, the coating baffle 7 has the function of free extension and retraction on the left and right. It can be fully extended during the heating period, and the extension and retraction distance can be adjusted according to the width of the base film during the coating process. If the width of the base film does not completely cover the coating drum 8, a part of the baffle can be left to block the two sides of the coating drum 8 and protect the empty area of ​​the coating drum 8.

[0020] It should also be noted that in this embodiment, the base film is made of high-temperature resistant polymer PET with a thickness of 8μm, a width of 1250mm, and a length of 8000mm. The width of the base film is adapted according to the application requirements, and the length of the base film is adjusted according to the coating capability of the equipment.

[0021] It should also be noted that in this embodiment, a roll of traction film is placed on the unwinding roller 1 before coating to avoid excessive waste of base film in the early stage of coating.

[0022] Continue to refer to Figure 1 As shown, the induction evaporation device 6 includes several crucibles arranged in an array, and the distance between the crucibles and the coating drum 8 is between 200mm and 240mm.

[0023] It should be noted that in this embodiment, the induction evaporation device 6 has 11 crucibles, and each crucible is filled with aluminum granules, with each crucible containing 1.0 kg of filler. After filling, pure titanium sheets are added to the crucibles. The size of the pure titanium sheets should not be too large; here, a thickness of 0.3 mm and a length and width of 20 mm are used. The purpose of using titanium sheets is to lubricate the crucibles. In addition, the power of each crucible is independently controlled, which facilitates the adjustment of the coating uniformity and achieves a more uniform film thickness. Furthermore, the design of 11 crucibles enables higher utilization of the coating metal material and higher film density compared to other types of evaporation devices 6. In specific applications, the number of crucibles in the induction evaporation device 6 can be freely increased or decreased according to the width of the substrate. It is not necessary to use 11 crucibles at once. For example, when the substrate film width is 1250 mm, 9 crucibles can be used, and when the width is 800 mm, 7 crucibles can be used.

[0024] Tension roller 3 is equipped with a tension sensor, which is fixedly installed on the roller shaft of tension roller 3 to monitor the tension of the base film. The tension of the base film is between 60N and 300N, and the tension accuracy error is between -2.5% and 2.5%. The tension of the base film at unwinding roller 1 and winding roller 11 is between 130N and 150N. The tension of the base film at coating drum 8 is between 110N and 120N.

[0025] It should be noted that in this embodiment, the tension sensor is used to monitor the tension of the base film in real time. It is fixedly installed with the roller shaft of the tension roller 3 to sense the tension of the base film and obtain accurate tension data. The tension roller 3 can automatically adjust the tension of the base film according to the real-time monitoring data of the tension sensor to ensure the stable transmission of the base film during the coating process. Furthermore, precise tension control can make the base film more smoothly transmitted during the production process, thereby improving production efficiency. It can also reduce the loss of film material, avoid defects in the film layer, and ensure the efficient operation of the production line.

[0026] 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. An induction heating vacuum winding coating system, characterized in that, The induction heating vacuum winding coating system includes a base film, an unwinding roller, a winding roller, a coating drum, a plasma treatment system, a cryogenic device, an induction evaporation device, and a coating baffle. The coating drum is located between the unwinding roller and the winding roller. The plasma treatment system is located between the unwinding roller and the coating drum, and is close to the unwinding roller. The cryogenic device is located inside the coating drum. The induction evaporation device is located close to the coating drum. The coating baffle is located between the induction evaporation device and the coating drum. The base film is unwound by the unwinding roller, coated by the coating drum, and then wound up by the winding roller.

2. The induction heating vacuum winding coating system according to claim 1, characterized in that, The induction heating vacuum winding coating system also includes a flattening roller, which is distributed between the coating drum and the unwinding roller and between the winding roller and the coating drum, for flattening the base film.

3. The induction heating vacuum winding coating system according to claim 1, characterized in that, The induction heating vacuum winding coating system also includes a tension roller, which is distributed between the coating drum and the unwinding roller and between the winding roller and the coating drum, for adjusting the tension of the base film.

4. The induction heating vacuum winding coating system according to claim 3, characterized in that, The induction heating vacuum winding coating system also includes a bending roller, and the tension roller is distributed between the coating drum and the unwinding roller and between the winding roller and the coating drum, for adjusting the conveying position of the base film.

5. The induction heating vacuum winding coating system according to claim 1, characterized in that, The induction heating vacuum winding coating system also includes a traction roller, which is disposed between the take-up roller and the coating drum and close to the coating drum, for pulling the base film and controlling the conveying speed of the base film.

6. The induction heating vacuum winding coating system according to claim 1, characterized in that, The induction evaporation device includes several crucibles arranged in an array.

7. The induction heating vacuum winding coating system according to claim 3, characterized in that, The tension roller is equipped with a tension sensor, which is fixedly installed on the roller shaft of the tension roller to monitor the tension of the base film.

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