Cooling mechanism and evaporation coating equipment

Abstract

The utility model discloses a cooling mechanism and evaporation coating equipment. The cooling mechanism comprises a cooling roller; the temperature detection assembly comprises a first guide rail and a temperature sensor, the first guide rail is located on one side of the cooling roller, the temperature sensor is movably installed on the first guide rail, and the temperature sensor is suitable for detecting the temperature of a thin film wound around the cooling roller. The temperature sensor can detect the temperature of a film wound on the cooling roller, and the temperature sensor is movably installed on the first guide rail, so that the temperature of different positions of the film can be detected, the cooling power of the cooling roller can be adjusted more accurately, and thermal deformation and even breakage of the film caused by too high temperature are avoided; therefore, the film coating generation efficiency and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of evaporation coating equipment technology, and more specifically, to a cooling mechanism and evaporation coating equipment. Background Technology

[0002] In related technologies, vacuum evaporation coating equipment can coat thin film surfaces. The thin film is typically wound around the surface of a cooling roller, and an evaporation system is located below the cooling roller. Because the temperature of the aluminum vapor evaporated by the evaporation system is too high, the cooling roller is needed to cool it and prevent the film from overheating and deforming. During the evaporation coating process, the heating of the film by the evaporation system and the cooling of the film by the cooling roller occur simultaneously. However, if the cooling power of the cooling roller does not match the heating power of the evaporation system, the film temperature will be too high. If it exceeds the upper limit of the film's thermal stability temperature, the film will deform or even break, thus affecting the coating efficiency and quality.

[0003] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for a cooling mechanism.

[0005] According to a first aspect of the present invention, a cooling mechanism is provided. The cooling mechanism includes:

[0006] Cooling rollers;

[0007] A temperature detection assembly includes a first guide rail and a temperature sensor. The first guide rail is located on one side of the cooling roller, and the temperature sensor is movably mounted on the first guide rail. The temperature sensor is suitable for detecting the temperature of a film wound around the cooling roller.

[0008] Optionally, the temperature detection assembly further includes a connector that is slidably connected to the first guide rail, and the temperature sensor is mounted on the connector.

[0009] Optionally, the connector includes a first connecting part and a second connecting part, the first connecting part being rotatably connected to the second connecting part, the second connecting part being slidably connected to the first guide rail, and the temperature sensor being mounted on the first connecting part.

[0010] Optionally, the temperature detection assembly further includes an elastic element connected to the second connection portion, the elastic element being adapted to move the temperature sensor toward the cooling roller.

[0011] Optionally, the first guide rail is located on one side of the cooling roller along the radial direction, the first guide rail has a curved structure, and the center of the curve is located on the side of the first guide rail facing the cooling roller.

[0012] Optionally, multiple temperature sensors are provided, and the multiple temperature sensors are spaced apart on the first guide rail.

[0013] Optionally, multiple first guide rails are spaced apart, and at least one temperature sensor is provided on each first guide rail.

[0014] Optionally, the cooling mechanism further includes a second guide rail, to which the first guide rail is slidably connected.

[0015] Optionally, there are two second guide rails, which are spaced apart, and the opposite ends of the first guide rail are respectively connected to the second guide rails.

[0016] Optionally, the cooling mechanism further includes a cooling plate with clearance holes, the cooling roller partially passing through the clearance holes, and the second guide rail mounted on the cooling plate.

[0017] According to a second aspect of the present invention, an evaporation coating apparatus is provided. This evaporation coating apparatus includes the cooling mechanism described in the above embodiments.

[0018] One technical advantage of this application is that the temperature sensor can detect the temperature of the film wound on the cooling roller. The temperature sensor is movably mounted on the first guide rail, so that the temperature at different positions of the film can be detected, so as to more accurately adjust the cooling power of the cooling roller, so as to avoid the film from thermal deformation or even breakage due to high temperature, thereby improving the coating efficiency and quality.

[0019] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0021] Figure 1 This is a schematic diagram of the cooling mechanism according to an embodiment of the present invention.

[0022] Figure 2 This is a front view of a cooling mechanism according to an embodiment of the present invention.

[0023] Figure 3 This is a side view of a cooling mechanism according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the first guide rail and the second guide rail according to an embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure of a connector according to an embodiment of the present invention.

[0026] Figure label:

[0027] 1. Cooling roller; 2. Guide roller; 3. Cooling plate; 4. Second guide rail; 41. Slide rail; 42. Slider; 5. Thin film; 6. Temperature sensor; 7. Connector; 71. First connecting part; 72. Second connecting part; 721. Connecting block; 8. First guide rail; 9. Evaporation assembly; 10. First vacuum chamber; 11. Second vacuum chamber; 12. Elastic element. Detailed Implementation

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0029] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0030] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0031] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0033] According to one embodiment of this application, a cooling mechanism is provided. For example... Figures 1 to 5 As shown, the cooling mechanism includes a cooling roller 1 and a temperature detection assembly. The temperature detection assembly includes a first guide rail 8 and a temperature sensor 6. The first guide rail 8 is located on one side of the cooling roller 1, and the temperature sensor 6 is movably mounted on the first guide rail 8. The temperature sensor 6 is suitable for detecting the temperature of the film 5 wound around the cooling roller 1. The film 5 can be a polymer material film with a thickness of 5 μm to 20 μm.

[0034] In this example, the temperature sensor 6 can detect the temperature of the film 5 wrapped around the cooling roller 1. The temperature sensor 6 is movably mounted on the first guide rail 8, so that the temperature of the film 5 at different positions can be detected, so as to more accurately adjust the cooling power of the cooling roller 1, so as to avoid the film 5 from thermal deformation or even breakage due to high temperature, thereby improving the coating generation efficiency and quality.

[0035] like Figures 1 to 3 As shown, in this example, the cooling mechanism of this invention can be used in an evaporative coating apparatus. Specifically, the film 5 to be coated is wound around a cooling roller 1. An evaporation assembly 9 is positioned below the cooling roller 1. The evaporation assembly 9 can be an evaporation boat, which can evaporate aluminum vapor, forming an aluminum film on the surface of the film 5. During coating, both the aluminum vapor and the evaporation assembly 9 cause the temperature of the film 5 wound around the surface of the cooling roller 1 to rise. A temperature sensor 6 is located between the evaporation assembly 9 and the cooling roller 1. The temperature sensor 6 can detect the temperature of the film 5 wound around the cooling roller 1. If the temperature of the film 5 is higher than a preset temperature, the cooling power of the cooling roller 1 can be adjusted to lower the temperature of the film 5 to the preset temperature, preventing the film 5 from deforming or breaking due to excessive temperature.

[0036] It should be noted that the cooling power of cooling roller 1 can be expressed as the cooling effect of cooling roller 1. For example, increasing the cooling power of cooling roller 1 results in a better cooling effect on film 5, thereby reducing the temperature of film 5. Cooling roller 1 can have cooling water or cold air flowing inside it. When it is necessary to increase the cooling power of cooling roller 1, the flow rate of cooling water or cold air inside cooling roller 1 can be increased, or the temperature of cooling water or cold air inside cooling roller 1 can be decreased. Of course, cooling roller 1 can also be cooled in other ways, as can be determined by those skilled in the art according to the actual situation, and no specific limitations are made here.

[0037] In this example, the temperature sensor 6 is movably mounted on the first guide rail 8, that is, the temperature sensor 6 can move along the first guide rail 8 to adjust its position, so as to detect the temperature at different positions of the film 5, thereby facilitating more accurate control of the cooling power of the cooling roller 1.

[0038] In this example, temperature sensor 6 is connected to an external multi-channel data acquisition module via an aviation connector. The data acquisition module is connected to a computer, which can collect, record, and display temperature data.

[0039] In one example, such as Figures 1 to 3 As shown, the temperature detection component also includes a connector 7, which is slidably connected to the first guide rail 8, and the temperature sensor 6 is mounted on the connector 7.

[0040] like Figures 1 to 3As shown, in this example, temperature sensor 6 is connected to the first guide rail 8 via connector 7. Temperature sensor 6 can be fixedly mounted on the connecting frame, with its detection end facing the cooling roller 1. For example, temperature sensor 6 can be fixedly connected to connector 7 by welding or bonding, or it can be detachably connected to connector 7 by fastener screwing or snap-fitting. Those skilled in the art can determine the appropriate method based on the specific circumstances, and no specific limitations are made here.

[0041] In this example, the connector 7 can slide along the first guide rail 8 to adjust the position of the temperature sensor 6. After the temperature sensor 6 is adjusted to the preset position, the connector 7 can be fixed to the first guide rail 8. For example, the connector 7 can be locked to the first guide rail 8 by a locking block, thereby fixing the position of the temperature sensor 6.

[0042] In one example, such as Figure 5 As shown, the connector 7 includes a first connecting part 71 and a second connecting part 72. The first connecting part 71 is rotatably connected to the second connecting part 72, and the second connecting part 72 is slidably connected to the first guide rail 8. The temperature sensor 6 is mounted on the first connecting part 71.

[0043] like Figure 5 As shown, in this example, the first connecting portion 71 and the second connecting portion 72 can be hinged, allowing the first connecting portion 71 to rotate relative to the second connecting portion 72. The second connecting portion 72 is slidably connected to the first guide rail 8, and the temperature sensor 6 is mounted on the first connecting portion 71. The first connecting portion 71 can rotate toward or away from the cooling roller 1, thereby adjusting the distance between the temperature sensor 6 and the cooling roller 1. For example, the first connecting portion 71 can drive the temperature sensor 6 toward the cooling roller 1 so that the detection end of the temperature sensor 6 can contact or abut against the film 5 wrapped around the surface of the cooling roller 1, improving the accuracy of temperature detection.

[0044] like Figure 5 As shown, in this example, the second connecting part 72 is further provided with a connecting block 721. The first guide rail 8 may be provided with a groove or a sliding hole. The connecting block 721 can be slidably disposed on the first guide rail 8 and can move along the groove or sliding hole, thereby driving the connecting member 7 to move along the first guide rail 8. The connecting block 721 can be a locking block; after the connecting member 7 moves to a preset position, the locking block can lock to fix the position of the connecting member 7.

[0045] In this example, the first connecting part 71 and the second connecting part 72 can be a connecting plate structure or a connecting rod structure, etc., which can be determined by those skilled in the art according to the actual situation, and no specific limitation is made here.

[0046] In one example, such as Figure 5As shown, the temperature detection assembly also includes an elastic element 12, which is connected to the second connecting part 72. The elastic element 12 is adapted to drive the temperature sensor 6 to move toward the cooling roller 1.

[0047] In this example, the elastic element 12 is connected to the second connecting portion 72, and one end of the elastic element 12 can be connected to the first connecting portion 71, thereby pushing the first connecting portion 71 to rotate toward the cooling roller 1, thus adjusting the distance between the temperature sensor 6 and the cooling roller 1. For example, the elastic element 12 can push the detection end of the temperature sensor 6 to abut against the surface of the film 5. Alternatively, one end of the elastic element 12 can also be directly connected to the temperature sensor 6, thereby pushing the temperature sensor 6 to rotate toward the cooling roller 1. Those skilled in the art can determine the appropriate method based on the actual situation, and no specific limitation is made here.

[0048] The elastic element 12 may include an adjusting rod and a spring. The adjusting rod is mounted on the second connecting part 72. The spring may be embedded in the adjusting rod, and one end of the spring may be connected to the first connecting part 71 and may push the first connecting part 71 to rotate. By adjusting the elastic force of the elastic element 12, the contact pressure of the temperature sensor 6 on the thin film 5 can be adjusted, thereby accurately measuring the temperature of the thin film 5 while preventing the temperature sensor 6 from scratching the thin film 5.

[0049] In one example, such as Figure 2 and Figure 4 As shown, the first guide rail 8 is located on one side of the cooling roller 1 along the radial direction. The first guide rail 8 has a curved structure, and the center of the curve is located on the side of the first guide rail 8 facing the cooling roller 1.

[0050] In this example, the cooling roller 1 has a cylindrical structure, and the first guide rail 8 has a curved structure, with the center of the first guide rail 8 located on the side of the first guide rail 8 facing the cooling roller 1. For example, the first guide rail 8 can have an arc structure, with the center of the first guide rail 8 concentric with the center of the cooling roller 1. The temperature sensor 6 slides along the first guide rail 8, thereby ensuring that the distance between the temperature sensor 6 and the cooling roller 1 remains consistent, which helps to reduce adjustment operations.

[0051] In one example, such as Figure 1 and Figure 2 As shown, there are multiple temperature sensors 6, which are spaced apart on the first guide rail 8.

[0052] In this example, by arranging multiple temperature sensors 6 at intervals on the first guide rail 8, the temperature at different locations on the thin film 5 can be detected. The multiple temperature sensors 6 can be evenly spaced. For example, two, three, four, or five temperature sensors 6 can be provided, as can be determined by those skilled in the art based on the actual situation, and no specific limitation is made here.

[0053] In one example, such as Figures 2 to 4 As shown, multiple first guide rails 8 are spaced apart, and each first guide rail 8 is provided with at least one of the temperature sensors 6.

[0054] like Figures 2 to 4 As shown, in this example, multiple first guide rails 8 can be spaced apart along the axial direction of the cooling roller 1, and one or more temperature sensors 6 can be installed on each first guide rail 8, thereby facilitating the detection of the temperature at different locations of the film 5. For example, two or three first guide rails 8 can be spaced apart, etc., as can be determined by those skilled in the art according to the actual situation, and no specific limitation is made here.

[0055] In one example, such as Figures 1 to 4 As shown, the cooling mechanism also includes a second guide rail 4, and the first guide rail 8 is slidably connected to the second guide rail 4.

[0056] like Figures 1 to 4 As shown, in this example, the second guide rail 4 can be arranged along the axial direction of the cooling roller 1, and the first guide rail 8 is slidably connected to the second guide rail 4 and can slide along the second guide rail 4, thereby adjusting the position of the temperature sensor 6 in the axial direction of the cooling roller 1. The temperature sensor 6 can move along the first guide rail 8, and the first guide rail 8 can also drive the temperature sensor 6 to move along the second guide rail 4, thereby enabling the testing of the temperature at any point on the surface of the cooling roller. This method is simple to operate and the measured results are relatively accurate.

[0057] like Figure 4 As shown, in this example, the second guide rail 4 may include a slide rail 41 and a slider 42, with the slide rail 41 arranged along the axial direction of the cooling roller 1. The slider 42 is slidably connected to the slide rail 41. One end of the first guide rail 8 is fixedly connected to the slider 42. The slide rail 41 is provided with a groove, and the slider 42 can be engaged in the groove and slide along the groove.

[0058] Alternatively, the first guide rail 8 and the slider 42 can be integrally formed, meaning that the first guide rail 8 can be directly slidably connected to the slide rail 41. The specific connection structure between the first guide rail 8 and the second guide rail 4 can be determined by those skilled in the art based on actual circumstances, and is not specifically limited here.

[0059] In one example, such as Figure 1 and Figure 4 As shown, there are two second guide rails 4, which are spaced apart, and the two opposite ends of the first guide rail 8 are respectively connected to the second guide rails 4.

[0060] like Figure 1 and Figure 4As shown, in this example, the two second guide rails 4 can be arranged in parallel, and the two second guide rails 4 can be arranged radially spaced along the cooling roller 1. The opposite ends of the first guide rail 8 are slidably connected to the second guide rails 4, thereby improving the stability and reliability of the first guide rail 8.

[0061] In one example, the cooling mechanism further includes a cooling plate 3 with clearance holes, through which the cooling roller 1 partially passes, and the second guide rail 4 is mounted on the cooling plate 3.

[0062] In this example, such as Figure 2 As shown, the cooling plate 3 divides the cavity of the evaporation coating equipment into a first vacuum chamber 10 and a second vacuum chamber 11. The first vacuum chamber 10 is located below the second vacuum chamber 11. The evaporation assembly 9 is located inside the first vacuum chamber 10. The cooling plate 3 is provided with clearance holes, which are the coating openings. The cooling roller 1 partially passes through the clearance holes, and the thin film 5 is wound around the cooling roller 1. The aluminum vapor evaporated by the evaporation assembly 9 can be coated on the thin film 5 below the clearance holes.

[0063] The cooling plate 3 also serves a cooling function, as the aluminum vapor in the evaporation assembly 9 in the first vacuum chamber 10 is in a diffused state. The cooling plate 3 prevents the heat from the aluminum vapor from diffusing into the second vacuum chamber 11. Cooling liquid or cold air can circulate within the cooling plate 3 to achieve a cooling effect. Furthermore, the cooling plate 3 also acts as a barrier, preventing volatiles from the evaporation assembly 9 from entering the second vacuum chamber 11 and contaminating the mechanisms or membrane 5 within the second vacuum chamber 11.

[0064] In this example, the second guide rail 4 can be mounted on the lower surface of the cooling plate 3. For example, the slide rail 41 of the second guide rail 4 is fixedly connected to the cooling plate 3 by means of screwing, welding, or snap-fit. This eliminates the need for additional mounting brackets, making the structure of the cooling mechanism simpler and more compact.

[0065] like Figure 1 and Figure 2 As shown, in this example, a guide roller 2 is also provided in the first vacuum chamber 10. Multiple guide rollers 2 are provided and are located on both sides of the cooling roller 1. The film 5 extends from the unwinding mechanism and is wound around the guide roller 2 on one side of the cooling roller 1, then wound around the cooling roller 1, then extends from the cooling roller 1 and is wound around the guide roller 2 on the other side of the cooling roller 1, and finally is wound into the winding mechanism.

[0066] The following is a description using specific embodiments:

[0067] A PET film 5 with a thickness of 10μm and a width of 1250mm was used as the test film 5. The test film 5 was installed in an evaporation coating equipment. A tension of 80N was applied. The position of the temperature sensor 6 was adjusted, and the elastic element 12 was adjusted to ensure that the temperature sensor 6 was tightly attached to the film 5 without damaging it. The temperature sensor 6 was connected to the data acquisition module via an aviation connector. A voltage of 200V was applied to the cooling roller 1 to ensure that the film 5 was tightly attached to the cooling roller 1. The coolant cooling circulation system in the cooling roller 1 was started to cool the cooling roller 1. At the same time, the vacuum chamber was evacuated to a vacuum of 0.02Pa. The temperatures at four points on the cooling roller 1 were measured as T1, T2, T3, and T4. Based on the temperatures at multiple locations, the cooling power of the cooling roller 1 was adjusted to an appropriate value.

[0068] According to a second aspect of this utility model, an evaporation coating apparatus is provided. This evaporation coating apparatus includes the cooling mechanism described in the above embodiments. The cooling mechanism includes a cooling roller 1 and a temperature detection component. The temperature detection component includes a first guide rail 8 and a temperature sensor 6. The first guide rail 8 is located on one side of the cooling roller 1, and the temperature sensor 6 is movably mounted on the first guide rail 8. The temperature sensor 6 is suitable for detecting the temperature of the film 5 wound around the cooling roller 1. The temperature sensor 6 can detect the temperature of the film 5 wound around the cooling roller 1. The temperature sensor 6 is movably mounted on the first guide rail 8, thereby detecting the temperature at different locations of the film 5, so as to more accurately adjust the cooling power of the cooling roller 1, avoiding thermal deformation or even breakage of the film 5 due to excessive temperature, thereby improving the coating formation efficiency and quality.

[0069] Of course, the cooling mechanism of this application can also be used in other equipment, as can be determined by those skilled in the art according to the actual situation, and no specific limitation is made here.

[0070] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0071] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A cooling mechanism characterized by, The application relates to a cooling mechanism for a film production line. The cooling mechanism comprises a cooling roller, a temperature detecting assembly, and a cooling plate. The temperature detecting assembly comprises a first guide rail and a temperature sensor.

2. The cooling mechanism according to claim 1, characterized by The first guide rail is arranged on one side of the cooling roller.

3. The cooling mechanism according to claim 2, characterized by The temperature sensor is movably arranged on the first guide rail.

4. The cooling mechanism according to claim 3, characterized by The temperature sensor is adapted to detect the temperature of the film wound on the cooling roller.

5. The cooling mechanism according to claim 1, characterized by The temperature detecting assembly further comprises a connecting piece.

6. The cooling mechanism according to claim 1, characterized by The connecting piece is slidably connected to the first guide rail.

7. The cooling mechanism according to claim 1, characterized by The temperature sensor is arranged on the connecting piece.

8. The cooling mechanism according to claim 1, characterized by The connecting piece comprises a first connecting part and a second connecting part.

9. The cooling mechanism according to claim 8, characterized by The first connecting part is rotatably connected to the second connecting part.

10. The cooling mechanism according to claim 8, characterized by The second connecting part is slidably connected to the first guide rail.

11. An evaporation coating apparatus, characterized by The temperature sensor is arranged on the first connecting part. The temperature detecting assembly further comprises an elastic piece. The elastic piece is connected to the second connecting part. The elastic piece is adapted to drive the temperature sensor to move towards the cooling roller. The first guide rail is arranged on one side of the cooling roller along the radial direction. The first guide rail has a curved structure. The center of the curve is located on the side of the first guide rail facing the cooling roller. A plurality of temperature sensors are arranged on the first guide rail. The first guide rail is arranged in a plurality of sections. At least one temperature sensor is arranged on each section of the first guide rail. The first guide rail is slidably connected to a second guide rail. The second guide rail is arranged in two sections. The opposite ends of the first guide rail are connected to the two sections of the second guide rail. The cooling plate is provided with a avoiding hole. The cooling roller is partially arranged in the avoiding hole. The second guide rail is arranged on the cooling plate. The application further relates to a film production line comprising the cooling mechanism. The film production line comprises a film production line and the cooling mechanism. The cooling mechanism is arranged on the film production line.

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