Winding coating machine assembly, winding coating machine and vacuum coating device
By setting up flat rollers with different speed in the coating component, the substrate is flattened, and the problem of folding the substrate can be easily produced during the vacuum coating process, and the flatness of the substrate and the improvement of the coating quality.
Patent Information
- Application Number
- CN202420524594.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-18
AI Technical Summary
During the vacuum coating process, the film substrate is prone to wrinkles, resulting in unevenness and affecting the coating quality.
Design a type of scrolling coating, including the main roller and two flat rollers (the first flat roller and the second display roller). By setting up the flat roller with different speeds, the substrate is flattened to form a "front pull pull The force of "post -drag" to ensure that the substrate is always flat.
Effectively prevent the substrate from folding during the coating process, keep it flat, and improve the uniformity and quality of the coating.
Smart Images
Figure CN222411805U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of coating technology, and in particular to a roll-to-roll coating machine component, a roll-to-roll coating machine and a vacuum coating device. Background Art
[0002] The coating of thin film materials is increasingly used in the processing of electronic materials. In recent years, the development of new energy technologies has increased the demand for the processing of thin film materials. For example, the preparation of electrodes for new batteries requires the coating of electrode materials on thin films. With the development of vacuum coating technology, the production process of flexible conductive materials has gradually replaced traditional electroplating, coating and chemical treatment methods by vacuum coating, reducing the pollution caused by traditional process methods, and has the advantages of high coating purity, good bonding strength and good uniformity.
[0003] In the vacuum evaporation coating industry, a target material (usually aluminum or copper) is generally plated on a micron-sized substrate. However, the substrate is very thin. When the film is unrolled and reeled, it is easy to cause wrinkles in the film, resulting in an uneven film, which is not conducive to the coating process of the film. Utility Model Content
[0004] The purpose of the present disclosure is to provide a roll-to-roll coating machine component, a roll-to-roll coating machine and a vacuum coating device, which can solve at least one of the above-mentioned technical problems. The specific solution is as follows:
[0005] According to a specific embodiment of the present disclosure, on the one hand, the present disclosure provides a roll-to-roll coating machine assembly, which is used for vacuum coating, and the roll-to-roll coating machine assembly includes: a main roller; a first flattening roller, which is arranged upstream of the transmission path of the main roller; a second flattening roller, which is arranged downstream of the transmission path of the main roller; a pre-cooling roller, which is arranged between the transmission path of the first flattening roller and the transmission path of the main roller; wherein the rotation speed of the first flattening roller is less than the rotation speed of the main roller, and the rotation speed of the second flattening roller is greater than the rotation speed of the main roller.
[0006] In an optional embodiment, the rotation speed of the first flattening roller is 5-15% slower than the rotation speed of the main roller.
[0007] In an optional embodiment, the rotation speed of the second flattening roller is 5-15% faster than the rotation speed of the main roller.
[0008] In an optional embodiment, a precooling pipeline is provided inside the precooling roller, and a first refrigerant inlet and a first refrigerant outlet are respectively provided at both ends of the precooling pipeline.
[0009] In an optional embodiment, the web coating machine assembly includes: a first refrigerator, wherein an outlet of the first refrigerator is connected to the first refrigerant inlet.
[0010] In an optional embodiment, the main roller is a cooling roller; a cooling pipeline is provided inside the pre-cooling roller, and a second refrigerant inlet and a second refrigerant outlet are provided at both ends of the cooling pipeline.
[0011] In an optional embodiment, the web coating machine assembly includes: a second refrigerator, wherein the outlet of the second refrigerator is connected to the second refrigerant inlet.
[0012] In an optional embodiment, the pre-cooling roller is provided with a first temperature sensor, and the first temperature sensor is configured to obtain the roller surface temperature of the pre-cooling roller.
[0013] In an optional embodiment, the main roller is provided with a second temperature sensor, and the second temperature sensor is configured to obtain the roller surface temperature of the main roller.
[0014] In an optional embodiment, the length of the film material between the main roller and the pre-cooling roller is 200-2000 mm.
[0015] According to a specific embodiment of the present disclosure, on the other hand, the present disclosure provides a roll coating machine, comprising: a unwinding mechanism, a winding mechanism and a roll coating machine component as described in any one of the above technical solutions.
[0016] According to a specific embodiment of the present disclosure, on another aspect, the present disclosure provides a vacuum coating device, including: a winding coating machine as described in the above technical solution.
[0017] Compared with the prior art, the above solution of the embodiment of the present disclosure has at least the following beneficial effects:
[0018] The roll-to-roll coating machine assembly provided by the present disclosure flattens the substrate passing through by arranging two flattening rollers (i.e., a first flattening roller and a second flattening roller). In actual use, the rotation speed of the first flattening roller is less than that of the main roller, and the main roller applies a pulling force to the substrate in the direction of the first flattening roller; the rotation speed of the second flattening roller is greater than that of the main roller, and the second flattening roller applies a pulling force to the substrate in the direction of the main roller. At this time, the substrate will have a "front-pull and back-pull" force, so that the substrate is closely attached to the main roller, and a pulling force is generated on the substrate in real time, so that the substrate is always in a flattened state during the coating process, preventing the substrate from wrinkling, making the substrate flat, and improving the effect of evaporation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A schematic structural diagram of a roll-to-roll coating machine assembly according to an embodiment of the present disclosure is shown, wherein the shear head represents the path for conveying the substrate.
[0020] Figure 2A schematic diagram of the forces acting on the substrate when the roll-to-roll coating machine assembly according to one embodiment of the present disclosure is shown, wherein the solid shear head is the direction of the tension applied by the first flattening roller, and the hollow shear head is the direction of the tension applied by the second flattening roller.
[0021] Figure 3 A schematic structural diagram of a roll-to-roll coating machine assembly according to another embodiment of the present disclosure is shown.
[0022] Figure 4 A schematic structural diagram of a vacuum coating device according to an embodiment of the present disclosure is shown.
[0023] Reference numerals:
[0024] 100: main roller; 200: first flattening roller; 300: second flattening roller; 400: pre-cooling roller; 500: evaporation assembly. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.
[0026] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The singular forms "a", "said" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.
[0027] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0028] It should be understood that although the terms first, second, third, etc. may be used to describe structures in the disclosed embodiments, these structures should not be limited to these terms. These terms are only used to distinguish different structures. For example, without departing from the scope of the disclosed embodiments, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component.
[0029] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.
[0030] In the related art, during the coating process, when the film moves with the roller system, the material thickness of the coated strip becomes thinner and thinner, and the thinner the material thickness of the coated strip, the smaller its rigidity. Therefore, during the vacuum coating process, the coated strip will be heated in the vacuum coating environment, and it will undergo instantaneous deformation and uneven surface of the coated strip. Since the coated strip expands due to heat, it is more likely to occur in the process of using the coating roller and winding the coated strip. The coated strip cannot be flattened immediately due to lateral expansion, resulting in longitudinal wrinkles, which in turn leads to the uneven surface of the coated strip, resulting in the plated product having many defects such as white strips on the empty line, blistering, burn holes, pinholes, tip discharge breakdown due to poor local cooling, etc. At the same time, the wrinkles on the coated strip will also lead to poor coverage between the coated strip and the coating roller, which in turn leads to poor cooling effect of the heated coated strip, causing damage to the coated strip. In the vacuum evaporation coating industry, a target material (usually aluminum or copper) is usually plated on a micron-sized substrate. However, the substrate is very thin, and the target vapor is a high-temperature gas, which can easily "burn" the substrate. Therefore, during the coating process, a very powerful heat dissipation system is required to prevent the substrate from being burned, and then a qualified composite current collector product can be made. When the vacuum evaporation coating industry is making aluminum / copper films, in order to ensure that the substrate is not burned, a high-speed substrate is often used. This method reduces the amount of heat received by the substrate per unit time, but the number of coatings will increase, requiring multiple coatings, and low productivity; and multiple film penetrations and adjustments to the coating surface are required, which is a great waste of the substrate.
[0031] In order to solve at least one of the above-mentioned technical problems, the present disclosure provides a roll coating machine assembly, a roll coating machine and a vacuum coating device, wherein the roll coating machine assembly may include: a main roller 100; a first flattening roller 200, the first flattening roller 200 is arranged upstream of the transmission path of the main roller 100; a second flattening roller 300, the second flattening roller 300 is arranged downstream of the transmission path of the main roller 100; wherein the rotation speed of the first flattening roller 200 is less than the rotation speed of the main roller 100, and the rotation speed of the second flattening roller 300 is greater than the rotation speed of the main roller 100. The roll coating machine assembly provided by the present disclosure flattens the passing substrate by arranging two flattening rollers (i.e., the first flattening roller 200 and the second flattening roller 300). In actual use, the rotation speed of the first flattening roller 200 is less than that of the main roller 100, and the main roller 100 applies a pulling force to the substrate in the direction of the first flattening roller 200; the rotation speed of the second flattening roller 300 is greater than that of the main roller 100, and the second flattening roller 300 applies a pulling force to the substrate in the direction of the main roller 100. At this time, the substrate will have a "front-pull and back-pull" force, so that the substrate fits tightly on the main roller 100, and generates a pulling force on the substrate in real time, so that the substrate is always in a flattened state during the coating process. The winding coating machine assembly disclosed in the present invention not only flattens the substrate before entering the main roller 100 for coating through the first flattening roller 200, but also flattens the substrate after entering the main roller 100 for coating through the second flattening roller 300. During the coating process, the substrate is also subjected to the forces of the first flattening roller 200 and the second flattening roller 300. Therefore, by using the winding coating machine assembly disclosed in the present invention for coating, the substrate can always be kept in a flattened state.
[0032] The optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
[0033] Figure 1 A schematic structural diagram of a roll-to-roll coating machine assembly according to an embodiment of the present disclosure is shown, wherein the shear head represents the path for conveying the substrate. Figure 2 The schematic diagram of the force applied to the substrate when the roll-to-roll coating machine assembly according to one embodiment of the present disclosure is in operation is shown, wherein the solid shear head is the direction of the tension applied by the first flattening roller 200, and the hollow shear head is the direction of the tension applied by the second flattening roller 300. Figure 1 and Figure 2As shown, according to a specific embodiment of the present disclosure, on the one hand, a roll coating machine assembly is provided, which may include: a main roller 100; a first flattening roller 200, which is arranged upstream of the transmission path of the main roller 100; and a second flattening roller 300, which is arranged downstream of the transmission path of the main roller 100; wherein the rotation speed of the first flattening roller 200 is lower than that of the main roller 100, and the rotation speed of the second flattening roller 300 is higher than that of the main roller 100. The roll coating machine assembly provided by the present disclosure flattens the passing substrate by arranging two flattening rollers (i.e., the first flattening roller 200 and the second flattening roller 300). During actual use, the rotation speed of the first flattening roller 200 is lower than that of the main roller 100, and the main roller 100 applies a pulling force to the substrate in the direction of the first flattening roller 200; the rotation speed of the second flattening roller 300 is higher than that of the main roller 100, and the second flattening roller 300 applies a pulling force to the substrate in the direction of the main roller 100. At this time, the substrate will experience a "front pulling and back pulling" force, so that the substrate fits tightly on the main roller 100, and generates a pulling force on the substrate in real time, so that the substrate is always in a flattened state during the coating process, preventing the substrate from wrinkling, making the substrate smooth, and improving the effect of evaporation.
[0034] In some embodiments, the rotation speed of the first flattening roller 200 is 5-15% slower than the rotation speed of the main roller 100. In other embodiments, the rotation speed of the second flattening roller 300 is 5-15% faster than the rotation speed of the main roller 100. During the coating process, the speed control system of the roll-to-roll coating machine is always working when the substrate is moving. For example, the speed of the main cooling roller (the main roller 100) is 100%, and the speed of the first flattening roller 200 is set to 90%. At this time, the speed of the first flattening roller 200 is slower than that of the main cooling roller. The first flattening roller 200 itself will produce a large friction force with the substrate, so the substrate will produce a "pulling force" opposite to the rotation direction of the main cooling roller. The speed of the second flattening roller 300 is set to 110%. At this time, the speed of the first flattening roller 200 is faster than that of the main cooling roller. The first flattening roller 200 itself will produce a large friction force with the substrate, so the substrate will produce a "pulling force" in the same direction as the rotation direction of the main cooling roller. At this time, the substrate will have a "front pulling and back pulling" force, so that the substrate fits tightly on the two cooling rollers, which is equivalent to improving the thermal conductivity, thereby improving the cooling capacity. During the entire coating process, the control system of the entire roll-to-roll coating machine belongs to the "foundation" and is always working.
[0035] Figure 3 FIG. 2 shows a schematic structural diagram of a roll-to-roll coating machine assembly according to another embodiment of the present disclosure. Figure 3As shown, in some embodiments, the roll coating machine assembly may further include: a pre-cooling roller 400, which is arranged between the transmission path of the first flattening roller 200 and the transmission path of the main roller 100. By using the pre-cooling roller 400 to pre-cool the substrate in advance and reduce the temperature of the substrate entering the coating area, the substrate can stay in the coating area for a longer time, reducing the disadvantages of multiple coatings; by adding the pre-cooling roller 400 and the main cooling roller, the first flattening roller 200 and the second flattening roller 300 are added before and after, and the coating times are reduced by at least 30% through speed difference control, thereby improving productivity and reducing enterprise production costs. The roll coating machine assembly disclosed in the present invention can increase the film thickness of a single coating, reduce the coating times, improve productivity, and reduce substrate waste by adding the pre-cooling roller 400, the first flattening roller 200, and the second flattening roller 300.
[0036] In some embodiments, a precooling pipeline is provided inside the precooling roller 400, and a first refrigerant inlet and a first refrigerant outlet are provided at both ends of the precooling pipeline, respectively. In an optional embodiment, the winding coating machine assembly may also include: a first refrigerator, and the outlet of the first refrigerator is connected to the first refrigerant inlet. The precooling roller 400 disclosed in the present invention has a circulating flow channel (i.e., the precooling pipeline) inside, and the refrigerant circulates through the precooling pipeline in cooperation with the first refrigerator outside to take away the heat of the substrate. Adding a precooling roller 400 in front of the main roller 100 allows the substrate to enter cooling in advance and reduce the initial temperature of the substrate. In addition, the speed difference control of the flattening rollers before and after the main roller 100 is increased to increase the adhesion between the substrate and the main roller 100, so that the cooling effect is better, thereby increasing the coating thickness and reducing the number of coating times.
[0037] In some embodiments, the main roller 100 is a cooling roller. In an optional embodiment, a cooling pipeline is provided inside the pre-cooling roller 400, and a second refrigerant inlet and a second refrigerant outlet are provided at both ends of the cooling pipeline. In some embodiments, the winding coating machine assembly may also include: a second refrigerator, and the outlet of the refrigerator is connected to the second refrigerant inlet. The main roller 100 is equipped with a cooling system, so that the main roller 100 becomes a cooling roller, and the cooling pipeline is provided inside, and cooperates with the second refrigerator outside to circulate the refrigerant to take away the heat after the substrate is coated.
[0038] In some embodiments, the pre-cooling roller 400 is provided with a first temperature sensor, and the first temperature sensor is configured to obtain the roller surface temperature of the pre-cooling roller 400. In an optional embodiment, the main roller 100 is provided with a second temperature sensor, and the second temperature sensor is configured to obtain the roller surface temperature of the main roller 100. The roller surface temperature of the pre-cooling roller 400 is obtained by the first temperature sensor, and the roller surface temperature of the main roller 100 is obtained by the second temperature sensor, and the refrigeration state of the first refrigerator and the second refrigerator is adjusted according to the obtained temperature.
[0039] During use, the main roller 100 is a cooling roller, the pre-cooling roller 400 is arranged upstream of the transmission path of the main roller 100, the first flattening roller 200 is arranged upstream of the transmission path of the pre-cooling roller 400, and the second flattening roller 300 is arranged downstream of the transmission path of the main roller 100. The cooling pipeline is arranged inside the main roller 100, and the refrigerant is transported to the cooling pipeline by the second refrigerator arranged outside to keep the roller surface temperature at about -20°C. At the same time, a pre-cooling roller 400 with a similar internal structure is provided. The pre-cooling pipeline is provided inside the pre-cooling roller 400. The refrigerant is transported to the pre-cooling pipeline through the first refrigerator provided outside, and the roller surface temperature is also maintained at about -20°C. The first refrigerator (and / or the second refrigerator) can perform PID adjustment on the refrigeration temperature according to the reflux refrigerant temperature (when the refrigerant circulates back to the first refrigerator / the second refrigerator from the pre-cooling pipeline / the cooling pipeline, the temperature sensor inside the first refrigerator / the second refrigerator will detect its temperature in real time. When this temperature is greater than the set temperature, the first refrigerator / the second refrigerator will operate to cool the refrigerant until it drops to the set temperature; when this temperature is lower than the set temperature, the heater will operate to heat the refrigerant until it reaches the set temperature), so as to achieve a constant temperature effect on the roller surface.
[0040] In some embodiments, the length of the film material between the main roller 100 and the pre-cooling roller 400 is 200-2000 mm. In an optional embodiment, the length of the film material between the first roller and the first cooling roller is 300-900 mm.
[0041] According to a specific embodiment of the present disclosure, on the other hand, a roll-to-roll coating machine is provided, which may include: an unwinding mechanism, a winding mechanism, and a roll-to-roll coating machine component as described in any one of the above embodiments.
[0042] Figure 4 FIG. 1 shows a schematic diagram of the structure of a vacuum coating device according to an embodiment of the present disclosure. Figure 4As shown, according to a specific embodiment of the present disclosure, in another aspect, a vacuum coating device is provided, and the vacuum coating device may include: an evaporation component 500 and a roll-to-roll coating machine as described in the above embodiment.
[0043] The present disclosure is intended to protect a roll coating machine assembly, a roll coating machine and a vacuum coating device, the roll coating machine assembly may include: a main roller 100; a first flattening roller 200, the first flattening roller 200 is arranged upstream of the transmission path of the main roller 100; a second flattening roller 300, the second flattening roller 300 is arranged downstream of the transmission path of the main roller 100; wherein the rotation speed of the first flattening roller 200 is lower than the rotation speed of the main roller 100, and the rotation speed of the second flattening roller 300 is higher than the rotation speed of the main roller 100. The roll coating machine assembly provided by the present disclosure flattens the passing substrate by arranging two flattening rollers (i.e., the first flattening roller 200 and the second flattening roller 300). During actual use, the rotation speed of the first flattening roller 200 is lower than that of the main roller 100, and the main roller 100 applies a pulling force to the substrate in the direction of the first flattening roller 200; the rotation speed of the second flattening roller 300 is higher than that of the main roller 100, and the second flattening roller 300 applies a pulling force to the substrate in the direction of the main roller 100. At this time, the substrate will experience a "front pulling and back pulling" force, which makes the substrate fit tightly on the main roller 100, and generates a pulling force on the substrate in real time, so that the substrate is always in a flattened state during the coating process. The roll-to-roll coating machine assembly disclosed in the present invention not only flattens the substrate before coating by the first flattening roller 200, but also flattens the substrate after coating by the second flattening roller 300. During the coating process, the substrate is also subjected to the force of the first flattening roller 200 and the second flattening roller 300. Therefore, by adopting the roll-to-roll coating machine assembly disclosed in the present invention for coating, the substrate can always be kept in a flat state, wrinkles on the substrate can be prevented, the substrate can be smoothed, and the effect of evaporation can be improved.
[0044] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.
[0045] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.
Claims
1. A roll-to-roll coating machine assembly for vacuum coating, characterized in that: include: Main roller; a first flattening roller disposed upstream of the conveying path of the main roller; a second flattening roller disposed downstream of the main roller in the conveying path; A pre-cooling roller, the pre-cooling roller being arranged between the conveying path of the first flattening roller and the conveying path of the main roller; Wherein, the rotation speed of the first flattening roller is lower than the rotation speed of the main roller, and the rotation speed of the second flattening roller is higher than the rotation speed of the main roller.
2. The web coating machine assembly according to claim 1, characterized in that: The rotation speed of the first flattening roller is 5-15% slower than the rotation speed of the main roller; and / or The rotation speed of the second flattening roller is 5-15% faster than the rotation speed of the main roller.
3. The web coating machine assembly according to claim 1, characterized in that: A precooling pipeline is arranged inside the precooling roller, and a first refrigerant inlet and a first refrigerant outlet are respectively arranged at two ends of the precooling pipeline.
4. The web coating machine assembly according to claim 3, characterized in that: Also includes: A first refrigerator, wherein an outlet of the first refrigerator is communicated with the first refrigerant inlet.
5. The web coating machine assembly according to claim 1, characterized in that: The main roller is a cooling roller; A cooling pipeline is provided inside the pre-cooling roller, and a second refrigerant inlet and a second refrigerant outlet are respectively provided at two ends of the cooling pipeline.
6. The web coating machine assembly according to claim 5, characterized in that: Also includes: A second refrigerator, wherein an outlet of the second refrigerator is connected to the second refrigerant inlet.
7. The web coating machine assembly according to claim 5, characterized in that: The pre-cooling roller is provided with a first temperature sensor, and the first temperature sensor is configured to obtain the roller surface temperature of the pre-cooling roller; and / or The main roller is provided with a second temperature sensor, and the second temperature sensor is configured to obtain the roller surface temperature of the main roller.
8. The web coating machine assembly according to claim 3 or 4, characterized in that: The length of the film material between the main roller and the pre-cooling roller is 200-2000 mm.
9. A roll-to-roll coating machine, characterized in that: include: An unwinding mechanism, a rewinding mechanism, and a winding coating machine component as described in any one of claims 1 to 8.
10. A vacuum coating device, characterized in that: include: A web coating machine as claimed in claim 9.