Coating machine and its transport device

Abstract

The application relates to a coating machine and a transmission device thereof. The transmission device of the coating machine comprises a first magnetic fluid, a second magnetic fluid, a connecting piece, a first driving assembly and a second driving assembly. The first magnetic fluid and the second magnetic fluid are respectively rotatably arranged on opposite two side walls of a coating cavity, and the connecting piece is connected with the first magnetic fluid and the second magnetic fluid. The first driving assembly is connected with the first magnetic fluid and is used for driving the first magnetic fluid to rotate. The second driving assembly is connected with the second magnetic fluid and is used for driving the second magnetic fluid to rotate. In the case that one of the first driving assembly and the second driving assembly is damaged, the other one of the first driving assembly and the second driving assembly can drive the first magnetic fluid and the second magnetic fluid to rotate, the stable transmission of a carrier plate in the coating cavity can be realized, the problem of carrier plate blocking can be solved, the production line stability can be maintained, and the solar cell piece yield and the production efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic production technology, and in particular to a coating machine and its transmission device. Background Technology

[0002] In the production process of heterojunction solar cells, after the silicon wafers are texturized and unloaded, a handle pulls the silicon wafers out of the basket and places them on a track. Then, a gantry moves, picking up the silicon wafers and transporting them onto a carrier plate. Through the carrier plate, the silicon wafers are transported to the coating chamber of the coating machine for process coating and other operations.

[0003] Common coating machines typically have a coating chamber equipped with a transfer device, which includes a magnetorheological fluid and a drive mechanism. Magnetorheological fluid is located on both opposite side walls of the coating chamber, and the drive mechanism rotates the fluid to transfer the carrier plate within the chamber. However, if the drive mechanism on one side of the coating chamber fails, it can cause uneven force distribution on the magnetorheological fluid on both sides, resulting in the carrier plate detaching from the fluid and becoming trapped within the chamber. This negatively impacts the yield and production efficiency of solar cells. Utility Model Content

[0004] Therefore, it is necessary to provide a coating machine and its transmission device to ensure the yield and production efficiency of solar cells.

[0005] In a first aspect, this application provides a conveying device for a coating machine, comprising:

[0006] A first magnetic fluid and a second magnetic fluid are respectively used to rotatably dispose of two opposite sidewalls of the coating cavity;

[0007] A connector, which is connected to the first magnetofluid and the second magnetofluid;

[0008] A first driving component, connected to the first magnetofluid, is used to drive the first magnetofluid to rotate; and

[0009] A second drive assembly is connected to the second magnetofluid and is used to drive the second magnetofluid to rotate.

[0010] In one embodiment, the first magnetic fluid is provided in at least two groups, and the at least two groups of first magnetic fluid are independent of each other; the first driving component is provided in at least two, and the at least two first driving components are driven and connected to the at least two groups of first magnetic fluid in a one-to-one correspondence.

[0011] In one embodiment, the first drive assembly includes a first drive member and a first transmission member. In each group of first magnetic fluids, there are at least two first magnetic fluids. All the first magnetic fluids are connected by transmission through the first transmission member. The first drive member is driven to at least one of the first magnetic fluids.

[0012] In one embodiment, the second magnetic fluid is provided in at least two groups, and the at least two groups of second magnetic fluids are independent of each other; the second driving component is provided in at least two, and the at least two second driving components are driven and connected to the at least two groups of second magnetic fluids in a one-to-one correspondence.

[0013] In one embodiment, the second drive assembly includes a second drive member and a second transmission member. In each group of second magnetic fluids, there are at least two second magnetic fluids. All the second magnetic fluids are connected by transmission through the second transmission member. The second drive member is driven to at least one second magnetic fluid.

[0014] In one embodiment, the first drive assembly includes a first drive element, and the second drive assembly includes a second drive element; the transmission device further includes a first sensor, a second sensor, and a processor, wherein the first sensor is used to measure a first torque value of the first drive element, the second sensor is used to measure a second torque value of the second drive element, and both the first sensor and the second sensor are communicatively connected to the processor.

[0015] In one embodiment, multiple first magnetic fluids, multiple second magnetic fluids, and multiple connectors are provided. The multiple first magnetic fluids are spaced apart along a first direction, and the multiple second magnetic fluids are spaced apart along the first direction. The multiple first magnetic fluids and the multiple second magnetic fluids are arranged opposite to each other. The multiple connectors are provided between the first magnetic fluids and the second magnetic fluids. One end of the multiple connectors is connected to the multiple first magnetic fluids in a corresponding manner, and the other end of the multiple connectors is connected to the multiple second magnetic fluids in a corresponding manner. The transmission device of the coating machine also includes a heating element, which is used to be disposed in the coating cavity.

[0016] In one embodiment, the heating element is provided with a groove that extends along the length of the connector, and the connector is disposed within the groove.

[0017] Secondly, this application also provides a coating machine, comprising:

[0018] A coating cavity, the coating cavity including opposing first sidewalls and second sidewalls; and

[0019] In any of the preceding transmission devices, the first magnetofluid is rotatably disposed on the first sidewall, the second magnetofluid is rotatably disposed on the second sidewall, the connector is disposed in the coating cavity, and both the first driving assembly and the second driving assembly are disposed outside the coating cavity.

[0020] In the aforementioned coating machine and its transmission device, if the first driving component fails to operate normally during operation, the second driving component can drive the second magnetofluid to rotate, which in turn drives the first magnetofluid to rotate via the connector, thus achieving the transmission of the carrier plate within the coating cavity. Conversely, if the second driving component fails to operate normally, the first driving component can drive the first magnetofluid to rotate, which in turn drives the second magnetofluid to rotate via the connector, achieving the transmission of the carrier plate within the coating cavity. Thus, even if one of the first or second driving components fails, the other can drive the first and second magnetofluids to rotate, ensuring stable transmission of the carrier plate within the coating cavity. This solves the problem of carrier plate blockage, helps maintain production line stability, and improves the yield and production efficiency of solar cells. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a transmission device according to an embodiment of this application.

[0022] Figure 2 for Figure 1 A top view of the transmission device shown.

[0023] Figure 3 This is a cross-sectional view along AA in the figure.

[0024] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0025] Explanation of icon numbers:

[0026] 10. Transmission device; 11. First magnetic fluid; 12. Second magnetic fluid; 13. Connector; 14. First drive assembly; 141. First drive component; 142. First transmission component; 15. Second drive assembly; 151. Second drive component; 152. Second transmission component; 16. Heating component; 161. Groove; 20. Coating cavity; 21. First sidewall; 22. Second sidewall; 30. Carrier plate. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] See Figure 1 , Figure 1 A schematic diagram of the transmission device in one embodiment of this application is shown. The coating machine provided in one embodiment of this application includes a transmission device 10 and a coating cavity 20. The transmission device 10 is disposed in the coating cavity 20 and is used to transmit a carrier plate 30 within the coating cavity 20.

[0029] During the coating process, a silicon wafer is placed on the carrier plate 30, and the transmission device 10 drives the carrier plate 30 to move, thereby realizing the transmission of the silicon wafer within the coating cavity 20.

[0030] See Figure 2 The coating cavity 20 includes a first sidewall 21 and a second sidewall 22, which are arranged opposite to each other.

[0031] See Figure 1 and Figure 2 The transmission device 10 includes a first magnetic fluid 11, a second magnetic fluid 12, and a connector 13. The first magnetic fluid 11 is rotatably disposed on a first sidewall 21, and the second magnetic fluid 12 is rotatably disposed on a second sidewall 22. The connector 13 is disposed inside the coating cavity 20 and is connected to the first magnetic fluid 11 and the second magnetic fluid 12.

[0032] See Figure 1 and Figure 2 The transmission device 10 further includes a first drive assembly 14 and a second drive assembly 15. The first drive assembly 14 is drivenly connected to the first magnetofluid 11 and is used to drive the first magnetofluid 11 to rotate. The second drive assembly 15 is drivenly connected to the second magnetofluid 12 and is used to drive the second magnetofluid 12 to rotate.

[0033] During coating, the first drive assembly 14 and the second drive assembly 15 are activated. Driven by the first drive assembly 14 and the second drive assembly 15, the first magnetic fluid 11 and the second magnetic fluid 12 rotate to realize the transmission of the carrier plate 30 in the coating cavity 20.

[0034] If the first drive component 14 fails to operate normally during the operation of the transmission device 10, the second drive component 15 can drive the second magnetic fluid 12 to rotate, which in turn drives the first magnetic fluid 11 to rotate via the connector 13, thus achieving the transmission of the carrier plate 30 within the coating cavity 20. If the second drive component 15 fails to operate normally, the first drive component 14 can drive the first magnetic fluid 11 to rotate, which in turn drives the second magnetic fluid 12 to rotate via the connector 13, thus achieving the transmission of the carrier plate 30 within the coating cavity 20. Therefore, in the event of failure of either the first drive component 14 or the second drive component 15, the other drive component can be used to drive the first magnetic fluid 11 and the second magnetic fluid 12 to rotate, achieving stable transmission of the carrier plate 30 within the coating cavity 20. This solves the problem of carrier plate clogging, helps maintain production line stability, and improves the yield and production efficiency of solar cells.

[0035] In one embodiment, the first sidewall 21 is provided with a plurality of first mounting holes, which are spaced apart along a first direction. Here, X represents the first direction. The second sidewall 22 is provided with a plurality of second mounting holes, which are spaced apart along the first direction.

[0036] Optionally, a plurality of first mounting holes are arranged opposite to a plurality of second mounting holes.

[0037] Further, see Figure 1 and Figure 2 Multiple first magnetic fluids 11 are provided, and each first magnetic fluid 11 is rotatably disposed in a plurality of first mounting holes. Multiple second magnetic fluids 12 are provided, and each second magnetic fluid 12 is rotatably disposed in a plurality of second mounting holes. Multiple connectors 13 are provided, one end of each connector 13 is connected to a plurality of first magnetic fluids 11, and the other end of each connector 13 is connected to a plurality of second magnetic fluids 12.

[0038] It should be noted that the first magnetic fluid 11 passes through the first mounting hole, with its first end located inside the coating cavity 20 and its second end located outside the coating cavity 20. The second magnetic fluid 12 passes through the second mounting hole, with its first end located inside the coating cavity 20 and its second end located outside the coating cavity 20. One end of the connector 13 is connected to the first end of the first magnetic fluid 11, and the other end of the connector 13 is connected to the first end of the second magnetic fluid 12, thus connecting the first magnetic fluid 11 and the second magnetic fluid 12.

[0039] Furthermore, both the first drive assembly 14 and the second drive assembly 15 are located outside the coating cavity 20. The first drive assembly 14 is driven connected to the second end of the first magnetic fluid 11, and the second drive assembly 15 is driven connected to the second end of the second magnetic fluid 12. By placing the first drive assembly 14 and the second drive assembly 15 outside the coating cavity 20, vibration interference can be reduced, which is beneficial to improving the coating quality. In addition, placing the first drive assembly 14 and the second drive assembly 15 outside the coating cavity 20 facilitates the inspection and maintenance of the first drive assembly 14 and the second drive assembly 15, reducing inspection and maintenance costs.

[0040] In one embodiment, the connector 13 is a high-temperature and corrosion-resistant component. Optionally, the connector 13 is a ceramic shaft. Ceramic shafts maintain high stability in high-temperature and corrosive environments, thus reducing deformation and wear, extending their service life, and minimizing downtime of the transmission device 10 due to connector 13 failure. This improves production efficiency and reduces replacement costs.

[0041] In one embodiment, see Figure 1 and Figure 2 The first magnetic fluid 11 is provided in at least two groups, and each group of the first magnetic fluid 11 is independent of each other.

[0042] It should be noted that, for reference Figure 2 Each group of first magnetic fluids 11 is independent of each other, meaning that any group of first magnetic fluids 11 does not contain any first magnetic fluids 11 in any other group.

[0043] Further, see Figure 1 and Figure 2 The system comprises at least two first drive components 14, each of which is connected to at least two sets of first magnetofluids 11 in a one-to-one driving manner. This segmented driving approach effectively prevents the transmission and amplification of problems caused by installation errors or instability in the first drive components 14 to subsequent first magnetofluids 11, optimizing the stability of the entire drive system and ensuring the accuracy and reliability of the rotation of each first magnetofluid 11.

[0044] Optionally, see Figure 2Two sets of first magnetic fluid 11 are provided. Specifically, in the transmission direction of the carrier plate 30, the first first magnetic fluid 11 and the middle first magnetic fluid 11 combine to form a first set of first magnetic fluid 11, and the middle first magnetic fluid 11 and the last first magnetic fluid 11 combine to form a second set of first magnetic fluid 11. Two first driving components 14 are provided, one of which is driven and connected to the first set of first magnetic fluid 11, and the other of which is driven and connected to the second set of first magnetic fluid 11. In this way, by arranging the first driving components 14 in segments in the two sets of first magnetic fluid 11, the accumulation and amplification of driving errors can be avoided.

[0045] In one embodiment, see Figure 1 and Figure 2 The first drive assembly 14 includes a first drive member 141 and a first transmission member 142.

[0046] In each group of first magnetic fluids 11, there are at least two first magnetic fluids 11. All the first magnetic fluids 11 are connected by a first transmission member 142, and a first driving member 141 is driven by at least one first magnetic fluid 11. During transmission, the first driving member 141 is activated, and the first driving member 141 drives the first magnetic fluid 11 connected to it to rotate, which in turn drives all the first magnetic fluids 11 in each group to rotate through the first transmission member 142.

[0047] Optionally, the first driving element 141 is a motor, and the output shaft of the motor is connected to one of the first magnetofluids 11.

[0048] Optionally, the first transmission member 142 is a transmission belt, and every two first magnetofluids 11 are connected by a transmission belt. Of course, in other embodiments, the first transmission member 142 may also be a transmission chain, transmission gear, etc., and is not limited thereto.

[0049] In this embodiment, see Figure 2 Each coating cavity 20 has two first driving members 141 on one side. One of the first driving members 141 is driven to connect with the first first magnetofluid 11 in the transmission direction of the carrier plate 30, and the other first driving member 141 is driven to connect with the last first magnetofluid 11 in the transmission direction of the carrier plate 30.

[0050] In one embodiment, the second magnetic fluid 12 is provided in at least two groups, and each group of the second magnetic fluid 12 is independent of each other.

[0051] It should be noted that each group of second magnetic fluids 12 is independent of each other, meaning that any one group of second magnetic fluids 12 does not contain any second magnetic fluids 12 in any other group.

[0052] Furthermore, at least two second drive components 15 are provided, and each of the at least two second drive components 15 is connected to at least two sets of second magnetofluids 12 in a one-to-one driving manner. In this way, by adopting a segmented driving method, the problem of transmission and amplification of the second magnetofluid 12 due to the installation error or the unstable driving of the second drive component 15 can be effectively prevented, thereby optimizing the stability of the entire drive system and ensuring the accuracy and reliability of the rotation of each second magnetofluid 12.

[0053] Optionally, in the transmission direction of the carrier plate 30, the first second magnetic fluid 12 to the middle second magnetic fluid 12 combine to form a first group of second magnetic fluids 12, and the middle second magnetic fluid 12 and the last second magnetic fluid 12 combine to form a second group of second magnetic fluids 12. Two second drive components 15 are provided, one of which is drivenly connected to the first group of second magnetic fluids 12, and the other is drivenly connected to the second group of second magnetic fluids 12. Thus, by arranging the second drive components 15 in segments within the two groups of second magnetic fluids 12, the accumulation and amplification of drive errors can be avoided.

[0054] In one embodiment, see Figure 2 The second drive assembly 15 includes a second drive member 151 and a second transmission member 152.

[0055] In each group of second magnetic fluids 12, there are at least two second magnetic fluids 12. All the second magnetic fluids 12 are connected by a second transmission member 152, and a second driving member 151 is driven to at least one second magnetic fluid 12. During transmission, the second driving member 151 is activated, and the second driving member 151 drives the second magnetic fluid 12 connected to it to rotate, which in turn drives all the second magnetic fluids 12 in each group to rotate through the second transmission member 152.

[0056] Optionally, the second drive element 151 is a motor, and the output shaft of the motor is connected to one of the second magnetofluids 12.

[0057] Optionally, the second transmission component 152 is a transmission belt, and every two second magnetofluids 12 are connected by a transmission belt. Of course, in other embodiments, the second transmission component 152 may also be a transmission chain, transmission gear, etc., and is not limited thereto.

[0058] In this embodiment, see Figure 2 Each coating cavity 20 has two second driving members 151 on one side. One of the second driving members 151 is driven to connect with the first second magnetofluid 12 in the transmission direction of the carrier plate 30, and the other second driving member 151 is driven to connect with the last second magnetofluid 12 in the transmission direction of the carrier plate 30.

[0059] In one embodiment, the transmission device 10 further includes a first sensor and a second sensor. The first sensor is disposed on the first drive member 141 and is used to measure a first torque value of the first drive member 141. The second sensor is disposed on the second drive member 151 and is used to measure a second torque value of the second drive member 151.

[0060] Furthermore, the transmission device 10 also includes a processor, which is communicatively connected to the first sensor and the second sensor. The processor is used to determine whether the first torque value and the second torque value are greater than a predetermined torque value, or the processor is used to determine whether the difference between the first torque value and the difference between the second torque value are greater than or equal to a predetermined torque difference.

[0061] It should be noted that the preset torque value and the preset torque difference can be set according to actual needs, as long as it ensures that no shutdown occurs.

[0062] During transmission, the first sensor measures the first torque value of the first drive component 141 in real time and feeds the first torque value back to the processor. Simultaneously, the second sensor measures the second torque value of the second drive component 151 in real time and feeds the second torque value back to the processor.

[0063] If the first drive component 14 fails, the second drive component 15 drives the second magnetofluid 12 to rotate, which in turn drives the first magnetofluid 11 to rotate via the connector 13. This causes a sudden increase in the torque of the second drive component 151 and a sudden increase in the torque difference between the two drive components 151, i.e., a sudden increase in the difference between the second torque value and the second torque value. When the processor determines that the second torque value is greater than or equal to a predetermined torque value, or that the difference between the second torque values ​​is greater than or equal to a predetermined difference, the processor feeds back the determination result to the main unit of the coating machine. A warning will appear on the main unit interface to remind the on-site operators to handle the situation according to the actual production conditions.

[0064] If the second drive component 15 fails, the first drive component 14 drives the first magnetofluid 11 to rotate, which in turn drives the second magnetofluid 12 to rotate via the connector 13. This causes a sudden increase in the torque of the first drive component 141 and a sudden increase in the torque difference between the first drive components 141, i.e., a sudden increase in the difference between the first torque values. When the processor determines that the first torque value is greater than or equal to a predetermined torque value, or that the difference between the first torque values ​​is greater than or equal to a predetermined difference, the processor feeds the result back to the main unit of the coating machine. A warning will appear on the main unit interface to remind the on-site operators to handle the situation according to the actual production conditions.

[0065] In one embodiment, see Figure 3The transmission device 10 also includes a heating element 16, which is disposed within the coating chamber 20 and used to heat the air within the coating chamber 20. Optionally, the heating element 16 is located below the connecting member 13. In the coating process, the heating element 16, disposed within the coating chamber 20, heats the air within the coating chamber 20 to a predetermined temperature, ensuring that the coating process is carried out in a stable thermal environment, thereby improving the quality and performance of the film layer. Furthermore, the increased temperature within the coating chamber 20 facilitates the deposition and diffusion of the film material on the substrate surface, enhances the adhesion between the film layer and the substrate, and reduces uneven deposition of the coating material due to temperature differences during the deposition process, resulting in a more uniform film layer.

[0066] In one embodiment, see Figure 3 and Figure 4 The heating element 16 has a groove 161 on the side facing the connector 13, and the groove 161 extends along the length of the connector 13, with the connector 13 disposed within the groove 161. By placing the connector 13 within the groove 161, heat exchange between the connector 13 and the external environment is reduced, allowing heat to concentrate within the coating cavity 20. This reduces temperature fluctuations caused by heat loss, thus maintaining a stable temperature within the coating cavity 20 and reducing the need for additional heat replenishment due to heat loss, thereby lowering energy consumption. Furthermore, the air surrounding the connector 13 can be uniformly heated, resulting in a more stable thermal environment and a more uniform temperature distribution within the coating cavity 20. This reduces temperature gradient differences caused by localized heat concentration, ensuring the uniformity and consistency of the coating.

[0067] Furthermore, multiple grooves 161 are provided, and the multiple grooves 161 are spaced apart along the first direction, and all the multiple grooves 161 extend along the second direction. The first direction intersects the second direction, for example, the first direction is perpendicular to the second direction, and the second direction is represented by Y. Multiple connectors 13 are correspondingly disposed within the multiple grooves 161.

[0068] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0069] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A conveying device (10) for a coating machine, characterized in that, include: A first magnetic fluid (11) and a second magnetic fluid (12) are respectively used to rotatably dispose on two opposite sidewalls of the coating cavity (20); A connector (13) is connected to the first magnetic fluid (11) and the second magnetic fluid (12); A first driving component (14) is connected to the first magnetic fluid (11) and is used to drive the first magnetic fluid (11) to rotate. as well as The second drive assembly (15) is connected to the second magnetic fluid (12) and is used to drive the second magnetic fluid (12) to rotate.

2. The conveying device (10) of the coating machine according to claim 1, characterized in that, The first magnetic fluid (11) is provided in at least two sets, and the at least two sets of the first magnetic fluid (11) are independent of each other; The first driving component (14) is provided in at least two, and the at least two first driving components (14) are driven and connected one-to-one with the at least two sets of first magnetofluids (11).

3. The conveying device (10) of the coating machine according to claim 2, characterized in that, The first drive assembly (14) includes a first drive member (141) and a first transmission member (142). In each group of first magnetic fluids (11), there are at least two first magnetic fluids (11). All first magnetic fluids (11) are connected by transmission through the first transmission member (142). The first drive member (141) is driven to at least one first magnetic fluid (11).

4. The conveying device (10) of the coating machine according to claim 1, characterized in that, The second magnetic fluid (12) is provided with at least two sets, and the at least two sets of the second magnetic fluid (12) are independent of each other; The second drive component (15) is provided in at least two, and the at least two second drive components (15) are driven and connected one-to-one with the at least two sets of second magnetofluids (12).

5. The conveying device (10) of the coating machine according to claim 4, characterized in that, The second drive assembly (15) includes a second drive member (151) and a second transmission member (152). In each group of second magnetic fluids (12), there are at least two second magnetic fluids (12). All second magnetic fluids (12) are connected by transmission through the second transmission member (152). The second drive member (151) is connected to at least one second magnetic fluid (12).

6. The conveying device (10) of the coating machine according to claim 1, characterized in that, The first drive component (14) includes a first drive element (141), and the second drive component (15) includes a second drive element (151). The transmission device (10) further includes a first sensor, a second sensor, and a processor. The first sensor is used to measure a first torque value of the first drive member (141), and the second sensor is used to measure a second torque value of the second drive member (151). Both the first sensor and the second sensor are communicatively connected to the processor.

7. The conveying device (10) of the coating machine according to any one of claims 1 to 6, characterized in that, The first magnetic fluid (11), the second magnetic fluid (12), and the connector (13) are provided in multiples. The multiple first magnetic fluids (11) are spaced apart along the first direction, and the multiple second magnetic fluids (12) are spaced apart along the first direction. The multiple first magnetic fluids (11) and the multiple second magnetic fluids (12) are arranged opposite to each other. The multiple connectors (13) are provided between the first magnetic fluids (11) and the second magnetic fluids (12). One end of the multiple connectors (13) is connected to the multiple first magnetic fluids (11) in a corresponding manner, and the other end of the multiple connectors (13) is connected to the multiple second magnetic fluids (12) in a corresponding manner.

8. The conveying device (10) of the coating machine according to any one of claims 1 to 6, characterized in that, The transfer device (10) of the coating machine also includes a heating element (16), which is disposed inside the coating cavity (20).

9. The conveying device (10) of the coating machine according to claim 8, characterized in that, The heating element (16) is provided with a groove (161), the groove (161) extends along the length direction of the connector (13), and the connector (13) is disposed in the groove (161).

10. A coating machine, characterized in that, include: The coating cavity (20) includes a first sidewall (21) and a second sidewall (22) opposite to each other. as well as The transmission device (10) according to any one of claims 1 to 9, wherein the first magnetic fluid (11) is rotatably disposed on the first sidewall (21), the second magnetic fluid (12) is rotatably disposed on the second sidewall (22), the connector (13) is disposed inside the coating cavity (20), and the first driving assembly (14) and the second driving assembly (15) are both disposed outside the coating cavity (20).

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