Coating system

Abstract

This application discloses a coating system comprising: a first supply device, a second supply device, a first liquid level detection device, a control device, and a coating device, wherein: the control device is electrically connected to the first supply device, the second supply device, and the first liquid level detection device respectively; the liquid inlet of the coating device is connected to a target liquid outlet via a pipeline, wherein the target liquid outlet is a shared outlet of the first supply device and the second supply device; the first liquid level detection device is used to acquire a first liquid level line of the liquid in the first supply device and send the first liquid level line to the control device; the control device is used to receive the first liquid level line, control the second supply device to turn on when the first liquid level line is less than a first threshold, and control the first supply device to turn off after a preset time.

Description

Technical Field

[0001] This application relates to the field of coating apparatus technology, and more particularly to a coating system. Background Technology

[0002] Currently, to achieve continuous liquid supply to the coating device, the remaining liquid level in the supply tank is typically observed manually. Once it is determined that the liquid in the supply tank is depleted, the system is manually switched to another supply tank to continue supplying liquid to the coating device, ensuring continuous liquid supply. However, this method is highly dependent on the enthusiasm of the personnel and suffers from low supply reliability. Summary of the Invention

[0003] This application discloses a coating system that can solve the problem of low supply reliability in related technologies.

[0004] To solve the above problems, this application adopts the following technical solution:

[0005] This application discloses a coating system, including: a first supply device, a second supply device, a first liquid level detection device, a control device, and a coating device. The control device is electrically connected to the first supply device, the second supply device, and the first liquid level detection device. The inlet of the coating device is connected to a target outlet via a pipeline, wherein the target outlet is a shared outlet of the first and second supply devices. The first liquid level detection device is used to acquire a first liquid level line in the first supply device and send the first liquid level line to the control device. The control device is used to receive the first liquid level line, and when the first liquid level line is less than a first threshold, control the second supply device to open, and control the first supply device to close after a preset time.

[0006] The coating system provided in this application includes a first supply device, a second supply device, a first liquid level detection device, a control device, and a coating device. The control device is electrically connected to the first supply device, the second supply device, and the first liquid level detection device. The liquid inlet of the coating device is connected to the liquid outlet shared by the first and second supply devices through a pipeline. When the coating device is supplied with liquid by the first supply device, the first liquid level detection device obtains the first liquid level line of the liquid in the first supply device and sends the first liquid level line to the control device. When the control device determines that the first liquid level line is less than a first threshold, the control device controls the second supply device to open and controls the first supply device to close after a preset time. This can improve the reliability of the supply while ensuring the continuity of the liquid supply to the coating device. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of a coating system disclosed in an embodiment of this application. Detailed Implementation

[0008] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0009] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0010] Figure 1 This is a schematic diagram of the structure of a coating system disclosed in an embodiment of this application.

[0011] like Figure 1 As shown, the coating system disclosed in this application includes: a first supply device 110, a second supply device 120, a first liquid level detection device 130, a control device 140, and a coating device 150. The control device 140 is electrically connected to the first supply device 110, the second supply device 120, and the first liquid level detection device 130. The inlet of the coating device 150 is connected to a target outlet via a pipeline, wherein the target outlet is a shared outlet of the first supply device 110 and the second supply device 120. The first liquid level detection device 130 is used to acquire a first liquid level line in the first supply device 110 and send the first liquid level line to the control device 140. The control device 140 is used to receive the first liquid level line, and when the first liquid level line is less than a first threshold, to control the second supply device 120 to open, and to control the first supply device 110 to close after a preset time.

[0012] It should be noted that the first supply device 110 and the second supply device 120 are used to supply liquid for coating to the coating device 150. The first liquid level line is used to characterize the remaining amount of liquid in the first supply device 110.

[0013] In this application, when the coating device 150 is supplied with liquid via the first supply device 110, the first liquid level detection device 130 acquires the first liquid level line in the first supply device 110 and sends the first liquid level line to the control device 140. When the control device 140 determines that the first liquid level line is lower than a first threshold, the control device 140 controls the second supply device 120 to open and, after a preset time, controls the first supply device 110 to close. That is, when the control device 140 determines that the first liquid level line is lower than the first threshold, the supply of liquid to the coating device 150 is switched from the first supply device 110 to the second supply device 120, ensuring the continuity of liquid supply to the coating device 150. Furthermore, since this application uses the control device 140 to control the first supply device 110 and the second supply device 120 based on the received first liquid level line, manual intervention is reduced, improving supply reliability. When the coating device 150 is supplied with liquid by the first supply device 110, the liquid supplied by the first supply device 110 enters the inlet of the coating device 150 through the target outlet. When the coating device 150 is supplied with liquid by the second supply device 120, the liquid supplied by the second supply device 120 enters the inlet of the coating device 150 through the target outlet.

[0014] This application does not specifically limit the values ​​of the first threshold and the preset time; the specific values ​​of the first threshold and the preset time can be set according to actual needs. After shutting down the first supply device 110 and switching to the second supply device 120 to supply liquid to the coating device 150, relevant technicians can replenish the liquid in the first supply device 110. After replenishing the first supply device 110, the supply can be switched back to the first supply device 110 to supply liquid to the coating device 150, or the second supply device 120 can continue to supply liquid to the coating device 150.

[0015] The coating system provided in this application includes a first supply device 110, a second supply device 120, a first liquid level detection device 130, a control device 140, and a coating device 150. The control device 140 is electrically connected to the first supply device 110, the second supply device 120, and the first liquid level detection device 130. The liquid inlet of the coating device 150 is connected to the liquid outlet shared by the first supply device 110 and the second supply device 120 through a pipeline. When the coating device 150 is supplied with liquid by the first supply device 110, the first liquid level detection device 130 obtains the first liquid level line of the liquid in the first supply device 110 and sends the first liquid level line to the control device 140. When the control device 140 determines that the first liquid level line is less than a first threshold, the control device 140 controls the second supply device 120 to open and controls the first supply device 110 to close after a preset time. This can improve the reliability of the supply while ensuring the continuity of the liquid supply to the coating device 150.

[0016] In one implementation, the control device 140 can be a programmable logic controller (PLC).

[0017] In this embodiment, the coating system may further include a flow regulating device 160. The inlet of the flow regulating device 160 is connected to the target outlet via a pipeline, and the outlet of the flow regulating device 160 is connected to the inlet of the coating device 150 via a pipeline. The flow regulating device 160 is electrically connected to the control device 140. That is, the liquid supplied by the first supply device 110 or the second supply device 120 is regulated by the flow regulating device 160 before entering the inlet of the coating device 150. Furthermore, this application controls the flow regulating device 160 via the control device 140. In one implementation, the flow regulating device 160 can be a pulsation-free metering pump, providing functions such as precise solution pressure metering and delivery.

[0018] In one possible implementation, for monitoring the anti-clogging fluid, the coating system may further include a pressure detection device 170, which is disposed between the outlet of the flow regulating device 160 and the inlet of the coating device 150. The pressure detection device 170 is electrically connected to the control device 140. The pressure detection device 170 is used to detect the pressure value in the pipeline connecting the outlet of the flow regulating device 160 and the inlet of the coating device 150, and send the pressure value to the control device 140. The control device 140 is also used to receive the pressure value and, if the pressure value exceeds a second threshold, control the flow regulating device 160 to shut down. If the pressure value detected by the pressure detection device 170 in the pipeline connecting the outlet of the flow regulating device 160 and the inlet of the coating device 150 exceeds the second threshold, it indicates that there is a blockage problem in the pipeline connecting the outlet of the flow regulating device 160 and the inlet of the coating device 150. The control device 140 then controls the flow regulating device 160 to shut down to prevent accidents. In one implementation, the pressure detection device 170 can be a pressure gauge capable of monitoring minute pressure changes.

[0019] In this embodiment, the coating system may further include a flow acquisition device 180, which is disposed between the outlet of the flow regulating device 160 and the inlet of the coating device 150. The flow acquisition device 180 is electrically connected to the control device 140 and is used to acquire the flow rate of the liquid in the pipeline connecting the outlet of the flow regulating device 160 and the inlet of the coating device 150, and send the flow rate to the control device 140. The control device 140 is also used to receive the flow rate and adjust the flow rate of the liquid output by the flow regulating device 160 according to the flow rate, thereby achieving precise quantitative spraying.

[0020] For example, the flow acquisition device 180 sends the real-time flow rate of the liquid in the pipeline connecting the outlet of the flow regulating device 160 and the inlet of the coating device 150 to the control device 140. The control device 140 calculates the flow difference between the received real-time flow rate and the preset target flow rate based on the flow difference. Then, the control device 140 adjusts the flow rate of the liquid output by the flow regulating device 160 according to the flow difference. When the flow regulating device 160 is a pulsation-free metering pump, the control device 140 can adjust the pump motor speed of the pulsation-free metering pump according to the flow difference, thereby adjusting the flow rate of the liquid output by the flow regulating device 160. It should be noted that the preset target flow rate can be set by relevant technical personnel according to actual needs, and the calculation between the real-time flow rate and the target flow rate can be a PID calculation. In one implementation, the flow acquisition device 180 can be a flow meter.

[0021] In one implementation, the coating system may further include a second liquid level detection device 190, which is disposed between the inlet of the flow regulating device 160 and the target outlet. The second liquid level detection device 190 is connected to the control device 140 and is used to acquire a second liquid level line of the liquid in the pipeline connecting the inlet of the flow regulating device 160 and the target outlet, and send the second liquid level line to the control device 140. The control device 140 is also used to receive the second liquid level line and control the flow regulating device 160 to shut down when the second liquid level line is less than a third threshold. In this application, by installing a second liquid level detection device 190 between the inlet and the target outlet of the flow regulating device 160, a second liquid level line of the liquid in the pipeline connecting the inlet and the target outlet of the flow regulating device 160 can be obtained, and the second liquid level line can be sent to the control device 140. When the control device 140 determines that the second liquid level line is lower than a third threshold, it indicates that the liquid supply has stopped, and the control device 140 controls the flow regulating device 160 to shut down, thereby protecting the flow regulating device 160. It should be noted that this application does not specifically limit the value of the third threshold; the specific value of the third threshold can be set according to actual needs.

[0022] In one implementation, the second liquid level detection device 190 can be a liquid shortage detection sensor. When the liquid shortage detection sensor is triggered, it indicates that there is a liquid shortage in the pipeline connecting the inlet of the flow regulating device 160 and the target outlet, and then the control device 140 controls the flow regulating device 160 to shut down.

[0023] In one possible implementation, the coating system may further include an alarm device electrically connected to the control device 140. The control device 140 is further configured to activate the alarm device when the second liquid level is below the third threshold. That is, when the control device 140 determines that the second liquid level is below the third threshold, it can simultaneously shut down the flow regulating device 160 and activate the alarm device to alert relevant technical personnel. For example, the alarm device could be an audible and visual alarm. Furthermore, when the control device 140 determines that the second liquid level is below the third threshold, it can also send a signal to the main line to control other equipment connected to the main line to also stop operating, ensuring the safety of the entire coating line.

[0024] In this application, the coating system may further include a third liquid level detection device 1100, which is electrically connected to the control device 140. The third liquid level detection device 1100 is used to acquire a third liquid level line of the liquid in the second supply device 120 and send the third liquid level line to the control device 140. The control device 140 is also used to receive the third liquid level line, and when the third liquid level line is less than a fourth threshold, to control the first supply device 110 to turn on, and after a preset time, to control the second supply device 120 to turn off. In this application, the third liquid level line of the liquid in the second supply device 120 is acquired by the third liquid level detection device 1100 and sent to the control device 140. When the control device 140 determines that the third liquid level line is less than the fourth threshold, it switches the liquid supply from the second supply device 120 to the first supply device 110 to supply the liquid to the coating device 150, thereby ensuring the continuity of liquid supply to the coating device 150. It should be noted that the first supply device 110 has already been replenished with liquid at this time. Furthermore, this application does not limit the value of the fourth threshold; the specific value of the fourth threshold can be set according to actual needs.

[0025] In one implementation, the first liquid level detection device 130 and the third liquid level detection device 1100 can be liquid level sensors.

[0026] In one implementation, the coating system may further include a filter device 1110, which is disposed between the liquid inlet of the coating device 150 and the target liquid outlet. By providing the filter device 1110 between the liquid inlet and the target liquid outlet of the coating device 150, minute impurities and other substances in the liquid can be filtered out. Optionally, the filter device 1110 may be a filter element with a filter diameter of 0.01 μm to 5.0 μm.

[0027] In this embodiment, the first supply device 110 may include a first supply tank 111 and a first switching valve 112. The first switching valve 112 is electrically connected to the control device 140, and the control device 140 is also used to control the opening or closing of the first switching valve 112, which in turn controls the opening or closing of the first supply tank 111. The second supply device 120 may include a second supply tank 121 and a second switching valve 122. The second switching valve 122 is electrically connected to the control device 140, and the control device 140 is also used to control the opening or closing of the second switching valve 122, which in turn controls the opening or closing of the second supply tank 121. In other words, the control device 140 controls the opening or closing of the first supply tank 111 by controlling the opening or closing of the first switching valve 112, and the control device 140 controls the opening or closing of the second supply tank 121 by controlling the opening or closing of the second switching valve 122. It should be noted that the supply tank functions as a liquid storage tank, and the first switching valve 112 and the second switching valve 122 function as liquid outlet switches. For example, the first switching valve 112 and the second switching valve 122 can be electromagnetic switching valves.

[0028] In one implementation, such as Figure 1 As shown, the first liquid level detection device 130 can be installed at the bottom of the first supply tank 111. When the first liquid level detection device 130 detects that there is no liquid in the first supply tank 111, the first liquid level detection device 130 sends a switching signal to the control device 140. The control device 140 controls the second supply device 120 to turn on and controls the first supply device 110 to turn off after a preset time. Similarly, the third liquid level detection device 1100 can also be installed at the bottom of the second supply tank 121, which will not be described in detail here.

[0029] In this embodiment, the coating system may further include a third switching valve 1120, which is disposed between the liquid inlet of the coating device 150 and the target liquid outlet. By providing the third switching valve 1120 between the liquid inlet of the coating device 150 and the target liquid outlet, the liquid before the coating device 150 can be shut off. It should be noted that the third switching valve 1120 can be a manual valve.

[0030] It should be noted that the coating system mentioned above may include, but is not limited to, coating processes used in precision optical films, precision coating processes involved in organic light-emitting diode (OLED) manufacturing, spraying processes used in the automotive industry, and precision mixing systems used in the biomedical industry.

[0031] Furthermore, the coating system disclosed in this application can communicate with other equipment to achieve coordinated control between the coating system and the entire production line.

[0032] The above embodiments of this application focus on describing 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 described in detail here.

[0033] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A coating system, characterized in that, include: The device comprises a first supply device, a second supply device, a first liquid level detection device, a control device, and a coating device, wherein: The control device is electrically connected to the first supply device, the second supply device and the first liquid level detection device respectively. The liquid inlet of the coating device is connected to the target liquid outlet through a pipeline. The target liquid outlet is a liquid outlet shared by the first supply device and the second supply device. The first liquid level detection device is used to acquire the first liquid level line of the liquid in the first supply device and send the first liquid level line to the control device; The control device is configured to receive the first liquid level line, control the second supply device to turn on when the first liquid level line is less than a first threshold, and control the first supply device to turn off after a preset time. It also includes a flow regulating device, the inlet of which is connected to the target outlet via a pipeline, the outlet of which is connected to the inlet of the coating device via a pipeline, and the flow regulating device is electrically connected to the control device. It also includes a second liquid level detection device, which is disposed between the inlet of the flow regulating device and the target outlet. The second liquid level detection device is connected to the control device and is used to obtain a second liquid level line of the liquid in the pipeline connecting the inlet of the flow regulating device and the target outlet, and send the second liquid level line to the control device. The control device is also used to receive the second liquid level line, and control the flow regulating device to shut down when the second liquid level line is less than the third threshold; the second liquid level line is a liquid shortage detection sensor.

2. The coating system according to claim 1, characterized in that, It also includes a pressure detection device, which is disposed between the outlet of the flow regulating device and the inlet of the coating device. The pressure detection device is electrically connected to the control device and is used to detect the pressure value in the pipeline connecting the outlet of the flow regulating device and the inlet of the coating device, and send the pressure value to the control device. The control device is also used to receive the pressure value and, if the pressure value exceeds a second threshold, control the flow regulating device to shut down.

3. The coating system according to claim 1, characterized in that, It also includes a flow acquisition device, which is disposed between the liquid outlet of the flow regulating device and the liquid inlet of the coating device. The flow acquisition device is electrically connected to the control device and is used to acquire the flow rate of the liquid in the pipeline connecting the liquid outlet of the flow regulating device and the liquid inlet of the coating device, and send the flow rate to the control device. The control device is also used to receive the flow rate value and adjust the flow rate of the liquid output by the flow regulating device according to the flow rate value.

4. The coating system according to claim 1, characterized in that, It also includes an alarm device, which is electrically connected to the control device; The control device is also used to control the alarm device to sound an alarm when the second liquid level line is lower than the third threshold.

5. The coating system according to claim 1, characterized in that, Also includes: The third liquid level detection device is electrically connected to the control device and is used to obtain the third liquid level line of the liquid in the second supply device and send the third liquid level line to the control device. The control device is also configured to receive the third liquid level line, control the first supply device to turn on when the third liquid level line is less than the fourth threshold, and control the second supply device to turn off after the preset time.

6. The coating system according to claim 1, characterized in that, It also includes a filtration device, which is disposed between the liquid inlet of the coating device and the target liquid outlet.

7. The coating system according to claim 1, characterized in that, The first supply device includes a first supply tank and a first switching valve. The first switching valve is electrically connected to the control device. The control device is also used to control the first switching valve to open or close. The first switching valve is used to control the first supply tank to open or close. The second supply device includes a second supply tank and a second switching valve. The second switching valve is electrically connected to the control device. The control device is also used to control the second switching valve to open or close. The second switching valve is used to control the second supply tank to open or close.

8. The coating system according to claim 1, characterized in that, It also includes a third switching valve, which is disposed between the liquid inlet of the coating device and the target liquid outlet.

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