Coating system

Abstract

The embodiment of the utility model provides a coating system which comprises a vacuum cavity 1 and further comprises the following components arranged in the vacuum cavity 1: an unwinding roller 2 used for unwinding a film 3; each coating unit comprises a main cold roller 8, an auxiliary cold roller 9 and an evaporation source 10 which are arranged at intervals, and the main cold roller 8 is arranged between the auxiliary cold roller 9 and the evaporation source 10; and the winding roller 12 is used for winding the films 3 passing through the plurality of film coating units. The film is cooled through the main cooling roller 8 and the auxiliary cooling roller 9, so that the film can be prevented from being burnt through by high-temperature particles.

Description

Technical Field

[0001] The utility model relates to the field of thin film evaporation, and in particular to a film coating system. Background Art

[0002] Vacuum evaporation refers to the process of coating a layer of metal or metal oxide on the surface of a material under vacuum conditions. However, current coating equipment does not cool the surface of the film well, resulting in the surface of the film being burned through by high-temperature particles, causing unnecessary property losses. Utility Model Content

[0003] In view of this, an object of the embodiments of the present invention is to provide a coating system to solve the above-mentioned shortcomings in the prior art.

[0004] In order to achieve the above-mentioned object, the present invention provides a coating system, comprising a vacuum chamber, and further comprising the following components disposed in the vacuum chamber:

[0005] An unwinding roller, used for unwinding the film;

[0006] A plurality of coating units, each of the coating units comprising: a primary cold roller, a secondary cold roller and an evaporation source arranged at intervals, the primary cold roller being arranged between the secondary cold roller and the evaporation source;

[0007] The winding roller is used to wind up the film that has passed through the multiple coating units.

[0008] In some possible implementations, the plurality of coating units may include:

[0009] a first set of coating units, for coating a first side of the film;

[0010] The second group of coating units is used to coat the second side of the film, and the second group of coating units is arranged downstream of the first group of coating units.

[0011] In some possible embodiments, a first swinging tension control roller assembly is further provided between the first group of coating units and the unwinding roller for controlling the tension of the film; the first swinging tension control roller assembly includes: a first contact roller, a first fixed shaft and a first counterweight roller, the first contact roller and the first counterweight roller are respectively provided on both sides of the first fixed shaft and rotate around the first fixed shaft, and the first contact roller is used to contact the film.

[0012] In some possible embodiments, a second swinging tension control roller assembly is further provided between the second group of coating units and the winding roller for controlling the tension of the film; the second swinging tension control roller assembly includes: a second contact roller, a second fixed shaft and a second counterweight roller, the second contact roller and the second counterweight roller are respectively provided on both sides of the second fixed shaft and rotate around the second fixed shaft, and the second contact roller is used to contact the film.

[0013] In some possible implementations, the coating system may further include:

[0014] A plurality of flattening units, each of the flattening units comprising a passing roller and a flattening roller, wherein the passing roller is arranged upstream of the flattening roller;

[0015] A flattening unit is provided between any adjacent coating units in the first group of coating units or the second group of coating units;

[0016] A plurality of flattening units are arranged between the first group of coating units and the second group of coating units.

[0017] In some possible implementations, the coating system further includes an equipment rack;

[0018] The first fixed shaft is fixed to the equipment frame via a first bearing, and the first swing-type tension control roller assembly further comprises: a first cylinder connected between the first contact roller and the first fixed shaft, for adjusting the position of the first contact roller through the movement stroke of the first cylinder, thereby adjusting the tension of the film surface; or,

[0019] The second fixed shaft is fixed on the equipment frame through a second bearing, and the second swinging tension control roller assembly also includes: a second cylinder connected between the second contact roller and the second fixed shaft, used to adjust the position of the second contact roller through the movement stroke of the second cylinder, thereby adjusting the tension of the film surface.

[0020] In some possible implementations, the diameter of the primary cold roller is greater than or equal to the diameter of the secondary cold roller.

[0021] In some possible implementations, the installation height of the winding roller in the vacuum chamber is higher than that of the unwinding roller;

[0022] The second group of coating units is installed at a higher height in the vacuum chamber than the first group of coating units.

[0023] In some possible implementations, a cooling medium is provided inside the primary cold roller and the secondary cold roller;

[0024] The main cold roller has a first liquid inlet for inputting the cooling medium and a first liquid outlet for outputting the cooling medium;

[0025] The auxiliary cold roller has a second liquid inlet for inputting a cooling medium and a second liquid outlet for outputting the cooling medium.

[0026] In some possible implementations, the coating system further includes:

[0027] a first cooling medium external pipeline, disposed outside the primary cold roller and connected to the first liquid inlet and the first liquid outlet, respectively;

[0028] A second cooling medium external pipeline is provided outside the auxiliary cold roller and is connected to the second liquid inlet and the second liquid outlet respectively; and

[0029] The external cooling device is configured to cool the cooling medium in the first cooling medium external pipeline or the second cooling medium external pipeline. In some possible embodiments, the auxiliary cooling roller, the primary cooling roller, and the evaporation source are spaced apart in the vertical direction; or, the auxiliary cooling roller, the primary cooling roller, and the evaporation source are spaced apart in the vertical direction from top to bottom, with the center line connecting the three forming an acute angle with the vertical direction.

[0030] The above technical solution has the following beneficial effects:

[0031] In the utility model, the high temperature generated by the evaporation source is used to coat the film, and the main cold roller and the negative cold roller cooperate to cool the film, thereby preventing the film from being scalded by high-temperature particles, causing damage to the film and resulting in property loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a schematic diagram of the internal structure of the first coating system of the present invention;

[0034] Figure 2 This is a schematic diagram of the internal structure of the second coating system of the present invention;

[0035] Figure 3 It is a partially enlarged cross-sectional view of a primary cold roller or a secondary cold roller according to an embodiment of the present invention.

[0036] Legend:

[0037] 1. Vacuum chamber; 2. Unwinding roller; 3. Film; 4. First contact roller; 5. First fixed shaft; 6. First counterweight roller; 7. Flattening roller; 8. Main cold roller; 9. Auxiliary cold roller; 10. Evaporation source; 11. Pass roller; 12. Winding roller; 13. Second contact roller; 14. Second fixed shaft; 15. Second counterweight roller; 81. First liquid inlet; 82. First liquid outlet; 91. Second liquid inlet; 92. Second liquid outlet. DETAILED DESCRIPTION

[0038] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description that follows, many specific details are presented in order to provide a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the accompanying drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessary ambiguity in the present invention; and, for clarity, the sizes of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0039] See Figure 1 and Figure 2 The present invention provides a coating system, comprising a vacuum chamber 1, and further comprising the following components arranged in the vacuum chamber 1:

[0040] The unwinding roller 2 is rotatably disposed inside the vacuum chamber 1 and is used to unwind the film 3;

[0041] Multiple coating units, each coating unit includes: a main cold roller 8, an auxiliary cold roller 9 and an evaporation source 10 arranged at intervals from each other, and the main cold roller 8 is arranged between the auxiliary cold roller 9 and the evaporation source 10;

[0042] The winding roller 12 is used to wind up the film 3 that has passed through the multiple coating units.

[0043] In some embodiments, the plurality of coating units may include:

[0044] A first set of coating units, for coating a first side of the thin film 3;

[0045] The second group of coating units is used to coat the second side of the thin film 3 . The second group of coating units is arranged downstream of the first group of coating units.

[0046] In this embodiment, each roller is rotatable, that is, each roller is connected to the vacuum chamber 1 in a rotatable manner, while the evaporation source in the coating unit is fixedly connected in the vacuum chamber 1 .

[0047] like Figure 2 As shown, in some embodiments, a first swinging tension control roller assembly can be further provided between the first group of coating units and the unwinding roller 2 to control the tension of the film 3; the first swinging tension control roller assembly includes: a first contact roller 4, a first fixed shaft 5 and a first counterweight roller 6, the first contact roller 4 and the first counterweight roller 6 rotate around the first fixed shaft 5, the fixed shaft 5 is fixed to the equipment frame through a bearing, and can rotate along the bearing, and there is a connection with a cylinder between the contact roller 4 and the fixed shaft 5, and the position of the contact roller 4 is adjusted by the movement stroke of the cylinder, thereby adjusting the tension of the film surface, and the first contact roller 4 is used to contact the film 3.

[0048] like Figure 2 As shown, in some other embodiments, a second swinging tension control roller assembly can be further provided between the second group of coating units and the winding roller 12, for controlling or adjusting the tension of the film 3; the second swinging tension control roller assembly includes: a second contact roller 13, a second fixed shaft 14 and a second counterweight roller 15, the second contact roller 13 and the second counterweight roller 15 rotate around the second fixed shaft 14, the second contact roller 13 is used to contact the film 3, and a plurality of flattening units, each flattening unit includes a passing roller 11 and a flattening roller 7, and the passing roller 11 is arranged upstream of the flattening roller 7.

[0049] The second fixed shaft 14 is fixed on the equipment frame through a second bearing. The second swinging tension control roller assembly also includes: a second cylinder connected between the second contact roller 13 and the second fixed shaft 14, which is used to adjust the position of the second contact roller 13 through the movement stroke of the second cylinder, thereby adjusting the tension of the film surface of the film 3.

[0050] In a further embodiment, the electroplating system may further include a plurality of flattening units, each flattening unit including a passing roller 11 and a flattening roller 7, the passing roller 11 being disposed upstream of the flattening roller 7;

[0051] A flattening unit is provided between any adjacent coating units in the first or second coating unit groups; and multiple flattening units are provided between the first and second coating units. This helps ensure that the product is completely flattened and in full contact with the primary cold roller 8 when it enters the primary cold roller 8, thereby ensuring that the product is properly cooled during coating and preventing partial poor contact between the product and the primary cold roller 8 or the secondary cold roller 9, which could lead to burn holes.

[0052] In some embodiments, the diameter of the primary cold roll 8 is greater than or equal to the diameter of the secondary cold roll 9. The primary cold roll 8 is the key cooling point for the product during coating, being the first to bear the heat of the coating and removing the majority of the heat from the product. The diameter of the secondary cold roll 9 can also be equal to or larger than the primary cold roll. Overall, as long as the contact area between the primary and secondary cold rolls 8 and 9 and the product ensures adequate cooling and prevents burn holes, the product will be sufficient. The winding roll 12 is installed at a higher height within the vacuum chamber 1 than the unwinding roll 2. The second set of coating units is installed at a higher height within the vacuum chamber 1 than the first set of coating units.

[0053] Figure 3 FIG is a partial enlarged cross-sectional view of the main cold roller or the auxiliary cold roller of an embodiment of the present invention. Figure 3 As shown, in some embodiments, a cooling medium is provided inside the main cold roller 8 and the auxiliary cold roller 9. The main cold roller 8 and the auxiliary cold roller 9 have corresponding liquid inlets and liquid outlets connected to the outside to ensure the circulation of the cooling medium (which can be achieved by means of corresponding pipelines). The cooling medium can be cooled externally to ensure that the temperature of the cooling medium entering the main cold roller 8 or the auxiliary cold roller 9 is within the process control range; the cooling medium enters the main cold roller 8 or the auxiliary cold roller 9 from the corresponding liquid inlet and flows out of the main cold roller 8 or the auxiliary cold roller 9 from the corresponding liquid outlet. Through the circulation of the cooling medium, the heat on the cooling roller is taken away, and the cooling medium is cooled by the external cooling equipment, and then enters the main cold roller 8 or the auxiliary cold roller 9 from the liquid inlet.

[0054] In a specific embodiment, the primary cold roller 8 has a first liquid inlet 81 for inputting the cooling medium and a first liquid outlet 82 for outputting the cooling medium; the secondary cold roller 9 has a second liquid inlet 91 for inputting the cooling medium and a second liquid outlet 92 for outputting the cooling medium. The coating system may further include: a first cooling medium external pipeline, disposed on the exterior of the primary cold roller 8 and connected to the first liquid inlet and the first liquid outlet, respectively; a second cooling medium external pipeline, disposed on the exterior of the secondary cold roller 9 and connected to the second liquid inlet and the second liquid outlet, respectively; and an external cooling device for cooling the cooling medium in the first cooling medium external pipeline or the second cooling medium external pipeline.

[0055] In some embodiments, the auxiliary cold roller 9, the main cold roller 8 and the evaporation source 10 are arranged in sequence along the vertical direction. The vertical or vertical arrangement can reduce the space occupied by the equipment; the auxiliary cold roller 9 can be set at a certain angle to the main cold roller 8, as long as the distance between the main cold roller 8 and the auxiliary cold roller 9 is not too far, which will affect the cooling effect on the product.

[0056] Here’s how it works:

[0057] When the film 3 is being coated, the film 3 is first unwound from the unwinding roller 2. After the film 3 passes through the unwinding roller 2, it reaches the first contact roller 4. The first contact roller 4 and the first counterweight roller 6 can rotate around the first fixed axis 5 to adjust the tension of the film 3.

[0058] After passing through the first contact roller 4, the film 3 reaches multiple coating units. Each coating unit includes a secondary cold roller 9, a main cold roller 8 and an evaporation source 10. The evaporation source 10 mainly generates high-temperature gas by evaporation to coat the film 3. The main cold roller 8 and the secondary cold roller 9 can comprehensively cool the film 3 to prevent high-temperature particles from burning or piercing the film 3.

[0059] After passing through a plurality of coating units (the first group of coating units), the film 3 passes through a flattening roller 7 and a passing roller 11. The main function of the flattening roller 7 is to flatten the film 3 to prevent wrinkles.

[0060] Then it passes through multiple coating units (the second group of coating units) again. These multiple coating units are mainly used to coat the other side of the film 3. The three coating units on the upper side and the three coating units on the lower side can perform double-sided coating and cooling on the film 3.

[0061] Finally, the film 3 passes through the roller 11 and the flattening roller 7 again and reaches the winding roller 12, where the film 3 is wound up.

[0062] In the description of this utility model, it should be noted that the terms "upper, lower, inner, and outer" and other references to orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first, second, or third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] Unless otherwise specified or limited, the terms "mounted, connected, and connected" in this utility model should be understood broadly. For example, they can refer to fixed connection, detachable connection, or integral connection. They can also refer to mechanical connection, electrical connection, direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0064] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A coating system, comprising a vacuum chamber (1), characterized in that: The vacuum chamber (1) further comprises the following components: An unwinding roller (2) for unwinding the film (3); A plurality of coating units, each of the coating units comprising: a primary cold roller (8), a secondary cold roller (9) and an evaporation source (10) arranged at intervals, the primary cold roller (8) being arranged between the secondary cold roller (9) and the evaporation source (10); the secondary cold roller (9), the primary cold roller (8) and the evaporation source (10) being arranged at intervals in a vertical direction; or, the secondary cold roller (9), the primary cold roller (8) and the evaporation source (10) being arranged at intervals from top to bottom and a center line connecting the three forms an acute angle with the vertical direction; a winding roller (12) for winding the film (3) that has passed through the plurality of coating units; The plurality of coating units include: A first set of coating units, used for coating a first side of the thin film (3); a second group of coating units, used for coating the second side of the thin film (3), the second group of coating units being arranged downstream of the first group of coating units; The installation height of the second group of coating units in the vacuum chamber (1) is higher than that of the first group of coating units.

2. The coating system according to claim 1, characterized in that: A first swing-type tension control roller assembly is also provided between the first group of coating units and the unwinding roller (2) for controlling the tension of the film (3); the first swing-type tension control roller assembly comprises: a first contact roller (4), a first fixed shaft (5) and a first counterweight roller (6), the first contact roller (4) and the first counterweight roller (6) being respectively provided on both sides of the first fixed shaft (5) and rotating around the first fixed shaft (5), and the first contact roller (4) being used for contacting the film (3).

3. The coating system according to claim 2, characterized in that: A second swing-type tension control roller assembly is also provided between the second group of coating units and the winding roller (12) for controlling the tension of the film (3); the second swing-type tension control roller assembly comprises: a second contact roller (13), a second fixed shaft (14) and a second counterweight roller (15); the second contact roller (13) and the second counterweight roller (15) are respectively provided on both sides of the second fixed shaft (14) and rotate around the second fixed shaft (14); the second contact roller (13) is used for contacting the film (3).

4. The coating system according to claim 1, characterized in that: The coating system further comprises: A plurality of flattening units, each of the flattening units comprising a passing roller (11) and a flattening roller (7), wherein the passing roller (11) is arranged upstream of the flattening roller (7); A flattening unit is provided between any adjacent coating units in the first group of coating units or the second group of coating units; A plurality of flattening units are arranged between the first group of coating units and the second group of coating units.

5. The coating system according to claim 3, characterized in that: The coating system also includes an equipment rack; The first fixed shaft (5) is fixed to the equipment frame via a first bearing, and the first swing-type tension control roller assembly further comprises: a first cylinder connected between the first contact roller (4) and the first fixed shaft (5), for adjusting the position of the first contact roller (4) through the movement stroke of the first cylinder, thereby adjusting the tension of the film surface of the film (3); or, The second fixed shaft (14) is fixed on the equipment frame through a second bearing, and the second swing-type tension control roller assembly also includes: a second cylinder connected between the second contact roller (13) and the second fixed shaft (14), which is used to adjust the position of the second contact roller (13) through the movement stroke of the second cylinder, thereby adjusting the tension of the film surface of the film (3).

6. The coating system according to claim 1, characterized in that: The diameter of the primary cold roller (8) is greater than or equal to the diameter of the secondary cold roller (9); The installation height of the winding roller (12) in the vacuum chamber (1) is higher than that of the unwinding roller (2).

7. The coating system according to claim 1, characterized in that: A cooling medium is provided inside the main cold roller (8) and the auxiliary cold roller (9); The main cold roller (8) has a first liquid inlet (81) for inputting a cooling medium and a first liquid outlet (82) for outputting the cooling medium; The auxiliary cold roller (9) has a second liquid inlet (91) for inputting a cooling medium and a second liquid outlet (92) for outputting the cooling medium.

8. The coating system according to claim 7, characterized in that: Also includes: a first cooling medium external pipeline, arranged outside the main cooling roller (8) and connected to the first liquid inlet (81) and the first liquid outlet (82); A second cooling medium external pipeline is provided outside the auxiliary cold roller (9) and is connected to the second liquid inlet (91) and the second liquid outlet (92) respectively; and The external cooling device is used to cool the cooling medium in the first cooling medium external pipeline or the second cooling medium external pipeline.

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