Automatic liquid supply system in coating process and control method thereof

Abstract

The invention discloses an automatic liquid supply system in a coating process and a control method thereof, and belongs to the technical field of coating. Comprising an intelligent control unit, a liquid storage unit, a conveying unit, a filtering unit, a flow control unit and a pressure control unit, the conveying unit is arranged between the liquid storage unit and the filtering unit, the filtering unit is arranged between the conveying unit and the flow control unit, and the flow control unit is arranged between the filtering unit and the pressure control unit. The pressure control unit is arranged between the flow control unit and the discharge port, and the liquid storage unit, the conveying unit, the filtering unit, the flow control unit and the pressure control unit are all in communication connection with the intelligent control unit. According to the automatic liquid supply system, the efficiency and the quality of a coating process can be remarkably improved, the uniformity and the accuracy of a coating are ensured, and the requirement of a high-precision coating process is met.

Description

Technical Field

[0001] The present invention relates to the technical field of coating, and in particular to an automatic liquid supply system in a coating process and a control method thereof. Background Art

[0002] Precision coating is an advanced process that evenly coats coatings or other surface treatment materials on substrates. It has important application value in modern industrial production and is widely used in electronics, optoelectronics, semiconductors, automobiles and other fields. In the precision coating process, the efficiency of the liquid supply system is the primary factor that determines the coating quality. The stability, uniformity and accuracy of the liquid supply directly affect the uniformity, edge clarity and thickness consistency of the coating, which in turn determines the overall performance and application effect of the product.

[0003] However, the existing liquid supply systems and devices face a series of technical challenges and performance bottlenecks in actual industrial applications: Fluctuations or instability in the operation of the liquid supply system can lead to periodic fluctuations in the coating thickness, causing uneven coating structure and reducing the physical properties and chemical stability of the product; if the liquid supply system cannot achieve precise flow control, it will lead to deviations in the coating thickness during the coating process, affecting the thickness uniformity of the product and the adaptability of subsequent processing technology. Liquid supply systems that rely on manual operation have the problem of low efficiency. At the same time, due to the intervention of human factors, the accuracy and repeatability of the operation are difficult to guarantee, which increases the uncertainty and potential defect risks in the production process; existing liquid supply systems often lack the necessary automatic control functions, which are difficult to match the development trend of automation and intelligence in modern industrial production, limiting the improvement of production efficiency and product consistency; liquid supply systems are highly sensitive to changes in environmental conditions. Changes in environmental factors such as temperature and humidity may affect the rheological properties of the liquid supply medium, thereby affecting the coating effect. If the liquid supply system lacks real-time monitoring and feedback adjustment mechanisms, it cannot respond to small changes in the production process in a timely manner, and it is difficult to achieve real-time control and optimization of coating quality. Summary of the invention

[0004] The object of the present invention is to provide an automatic liquid supply system and a control method thereof in a coating process, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows:

[0005] The invention discloses an automatic liquid supply system in a coating process, comprising an intelligent control unit, a liquid storage unit, a conveying unit, a filtering unit, a flow control unit and a pressure control unit; the liquid storage unit is used to store coating liquid; the conveying unit is arranged between the liquid storage unit and the filtering unit, and is used to convey the coating liquid in the liquid storage unit to the filtering unit; the filtering unit is arranged between the conveying unit and the flow control unit, and is used to filter the coating liquid; the flow control unit is arranged between the filtering unit and the pressure control unit, and is used to monitor and accurately control the flow of the coating liquid in real time; the pressure control unit is arranged between the flow control unit and the discharge port, and is used to ensure the output stability of the coating liquid in the entire coating process; the liquid storage unit, the conveying unit, the filtering unit, the flow control unit and the pressure control unit are all connected to the intelligent control unit for communication, and the intelligent control unit collects and analyzes data from each unit, and intelligently regulates the liquid storage unit, the conveying unit, the filtering unit, the flow control unit and the pressure control unit through a preset algorithm, so as to realize the automation and intelligence of the entire liquid supply process.

[0006] As a further solution of the present invention: the liquid storage unit includes a liquid storage tank and a liquid level detection device, and the liquid level detection device is communicatively connected with the intelligent control unit.

[0007] As a further solution of the present invention: the delivery unit includes a delivery pump and a flow control valve, the flow control valve is arranged between the delivery pump and the liquid storage unit, and the delivery pump is communicatively connected with the intelligent control unit.

[0008] As a further solution of the present invention: the filter unit has a built-in double-layer precision filter.

[0009] As a further solution of the present invention: the flow control unit has a flow sensor, and the flow sensor is communicatively connected with the intelligent control unit.

[0010] As a further solution of the present invention: the intelligent control unit is also communicatively connected to an audible and visual alarm.

[0011] The present invention also provides a control method for an automatic liquid supply system in a coating process, comprising the following steps:

[0012] Liquid level monitoring and refilling: After the system is started, the liquid level in the liquid storage unit is monitored in real time, and the data is transmitted to the intelligent control unit in real time. When the liquid level is detected to be lower than the preset minimum safety value, the intelligent control unit automatically starts the refilling program to ensure that there is sufficient coating liquid in the liquid storage unit;

[0013] Pumping instructions and execution: The intelligent control unit sets the working pressure and flow rate of the delivery unit according to the coating process requirements. After receiving the instructions, the delivery unit delivers the coating liquid from the liquid storage unit to the filtration unit according to the set parameters;

[0014] Liquid filtration: The coating liquid flows into the filtration unit, and the filtration unit filters impurities and particles in the coating liquid;

[0015] Flow control and feedback: The filtered coating liquid enters the flow control unit, which monitors the coating liquid flow in real time. The flow data is transmitted to the intelligent control unit and compared with the preset flow value. If the monitored flow value deviates from the preset value, the intelligent control unit automatically adjusts the working parameters of the conveying unit according to the degree of deviation. Through real-time adjustment, the intelligent control unit ensures that the liquid flow output by the conveying unit accurately matches the requirements of the coating process.

[0016] Pressure regulation and stabilization: The pressure control unit continuously monitors the liquid supply pressure throughout the coating process and automatically adjusts it based on real-time feedback to ensure the stability of the liquid supply pressure.

[0017] The present invention has the following beneficial effects:

[0018] 1. Improve coating uniformity: Through the coordinated work of the high-precision delivery unit and the flow control unit, the present invention effectively eliminates the coating thickness fluctuation caused by unstable liquid supply, ensuring the uniformity of the coating on the entire substrate surface;

[0019] 2. Enhanced liquid supply accuracy: By adopting advanced flow sensors and intelligent control units, the present invention realizes real-time monitoring and precise control of liquid flow, significantly improves the liquid supply accuracy during the coating process, and meets the requirements of high-precision coating process;

[0020] 3. Ensure coating quality: The precision filtration function of the filtration unit ensures the high purity of the coating liquid, avoids the influence of impurities and particles on the coating quality, and thus improves the performance and reliability of the final product;

[0021] 4. Optimize liquid supply stability: The automatic adjustment function of the pressure regulating unit ensures the stability of the coating liquid output, adapts to different coating speeds and thickness requirements, and provides a strong guarantee for a continuous and stable coating process;

[0022] 5. Improve operational efficiency: The application of intelligent control units realizes the automation and intelligence of the liquid supply process, reduces the need for manual operation, reduces the risk of inefficient operation and errors, and improves overall production efficiency;

[0023] 6. Reduce production costs: By improving coating efficiency and quality, material waste and rework rate are reduced. At the same time, the easy operation and maintenance characteristics also help to reduce maintenance costs and operating costs;

[0024] 7. Enhance system adaptability: The data analysis and preset algorithm control capabilities of the intelligent control unit enable the system to quickly respond to different coating requirements and environmental changes, improving the adaptability and flexibility of the system;

[0025] 8. Ensure production safety: The liquid level monitoring function of the liquid storage unit provides safety for the liquid supply process, effectively preventing liquid supply interruption or equipment damage caused by low liquid level;

[0026] 9. Realize intelligent monitoring: The integrated monitoring function of the intelligent control unit provides real-time data support for the production process, facilitates production management and quality control, and provides a data basis for system optimization and upgrading. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 This is a schematic diagram of an automatic liquid supply system in a coating process of the present invention;

[0029] Figure 2 It is a structural diagram of an automatic liquid supply system in a coating process of the present invention.

[0030] In the figure: 1. Intelligent control unit; 2. Liquid storage unit; 21. Liquid storage tank; 22. Liquid level detection device; 3. Delivery unit; 31. Delivery pump; 32. Flow control valve; 4. Filter unit; 41. Double-layer precision filter; 5. Flow control unit; 6. Pressure control unit; 7. Sound and light alarm. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] See also Figure 1As shown, the first embodiment of the present invention provides an automatic liquid supply system in a coating process, including an intelligent control unit 1, a liquid storage unit 2, a conveying unit 3, a filtering unit 4, a flow control unit 5, a pressure control unit 6 and an audible and visual alarm 7. The automatic liquid supply system can significantly improve the efficiency and quality of the coating process, ensure the uniformity and accuracy of the coating, and meet the requirements of high-precision coating technology. In addition, it is easy to operate and maintain, which helps to reduce production costs and improve production efficiency.

[0034] See also Figure 2 As shown, the liquid storage unit 2 is the starting point of the automatic liquid supply system, which is responsible for storing the required coating liquid. In addition to the basic storage function, the liquid storage unit 2 also has a liquid level monitoring function, which can feedback the liquid level information in real time to ensure the continuity and safety of the liquid supply process. In this embodiment, the liquid storage unit 2 at least includes a liquid storage tank 21 and a liquid level detection device 22. The liquid storage tank 21 is responsible for storing the coating liquid. The liquid level detection device 22 is connected to the intelligent control unit 1 for real-time monitoring and feedback of the liquid level information in the liquid storage tank 21. The liquid level detection device 22 can be a radar level meter, a magnetostrictive level meter, a float level meter, an ultrasonic level meter, etc.

[0035] For further information, see Figure 2 As shown, the intelligent control unit 1 is also connected to the sound and light alarm 7. When the liquid level detection device 22 detects that the liquid level of the liquid storage tank 21 is lower than the preset minimum safety value, the intelligent control unit 1 controls the sound and light alarm 7 to immediately sound and light alarm. The liquid level monitoring function of the liquid storage unit 2 provides safety protection for the liquid supply process and effectively prevents liquid supply interruption or equipment damage caused by too low a liquid level.

[0036] See also Figure 2 As shown, the delivery unit 3 is arranged between the liquid storage unit 2 and the filter unit 4, and the delivery unit 3 delivers the coating liquid in the liquid storage tank 21 to the filter unit 4. In this embodiment, the delivery unit 3 includes a high-precision delivery pump 31 and a flow control valve 32, the flow control valve 32 is arranged between the delivery pump 31 and the liquid storage unit 2, and the delivery pump 31 is connected to the intelligent control unit 1 for communication. The high-precision delivery pump 31 and the flow control valve 32 are used to accurately control the output volume and output speed of the liquid according to the specific requirements of the coating process, thereby ensuring the consistency and repeatability of the coating liquid output, eliminating the problem of coating thickness fluctuation caused by unstable pumping, and ensuring the uniformity of the coating on the entire substrate surface.

[0037] See also Figure 2As shown, after the coating liquid is transported to the filter unit 4, the filter unit 4 performs precision filtering on the coating liquid to remove impurities and particles that may be present in the coating liquid, thereby ensuring the purity of the coating liquid and the coating quality. In this embodiment, the filter unit 4 has a built-in double-layer precision filter 41 to effectively remove impurities and particles in the coating liquid. The filtered liquid is purer, providing high-quality coating liquid for the subsequent coating process. The precision filtering function of the filter unit 4 ensures the high purity of the coating liquid, avoids the influence of impurities and particles on the coating quality, and thus improves the performance and reliability of the final product.

[0038] See also Figure 2 As shown, in this embodiment, the flow control unit 5 is equipped with a high-precision flow sensor, and the flow sensor is communicated with the intelligent control unit 1 to realize real-time monitoring and precise control of the coating liquid flow. The high-precision characteristics of the flow control unit 5 ensure the uniformity and consistency of the liquid flow during the coating process, significantly improve the liquid supply accuracy during the coating process, and meet the needs of high-precision coating process.

[0039] See also Figure 2 As shown, the pressure control unit 6 ensures the output stability of the coating liquid during the entire coating process by stabilizing the liquid supply pressure. The pressure control unit 6 can automatically adjust the pressure to adapt to different coating speeds and thickness requirements. The automatic adjustment function of the pressure adjustment unit ensures the stability of the coating liquid output, adapts to different coating speeds and thickness requirements, and provides a strong guarantee for a continuous and stable coating process.

[0040] See also Figure 2 As shown, the intelligent control unit 1 serves as the brain of the entire automatic liquid supply system. The intelligent control unit 1 collects and analyzes data from sensors of each unit, and intelligently regulates the liquid storage unit 2, the conveying unit 3, the filtering unit 4, the flow control unit 5 and the pressure control unit 6 through a preset algorithm, thereby realizing the automation and intelligence of the entire liquid supply process. The intelligent control unit 1 may be a programmable logic controller (PLC). The application of the intelligent control unit 1 realizes the automation and intelligence of the liquid supply process, reduces the need for manual operation, reduces the risk of low operating efficiency and errors, and improves the overall production efficiency. The data analysis and preset algorithm control capabilities of the intelligent control unit 1 enable the system to quickly respond to different coating requirements and environmental changes, improving the adaptability and flexibility of the system. The integrated monitoring function of the intelligent control unit 1 provides real-time data support for the production process, facilitates production management and quality control, and provides a data basis for the optimization and upgrading of the system.

[0041] The system has the following features: high stability to ensure coating uniformity; high precision to meet the needs of precision coating; high automation and intelligence to reduce manual intervention and improve production efficiency; low maintenance costs to reduce production costs; and advanced monitoring and feedback mechanisms to achieve real-time process control and quality optimization. These features will jointly promote the development of coating technology in a more efficient, stable and intelligent direction to meet increasingly stringent industrial standards and market demands.

[0042] Embodiment 2

[0043] This embodiment provides a control method for an automatic liquid supply system in a coating process described in the embodiment, which specifically includes the following steps:

[0044] Liquid level monitoring and fluid replenishment: After the system is started, the liquid level detection device 22 in the liquid storage unit 2 begins to monitor the liquid level height inside the liquid storage tank 21 and transmits real-time data to the intelligent control unit 1. When the intelligent control unit 1 detects that the liquid level is lower than the preset minimum safety value, the intelligent control unit 1 controls the sound and light alarm 7 to immediately sound an sound and light alarm and automatically start the fluid replenishment program to ensure that there is sufficient liquid in the liquid storage tank 21.

[0045] Pumping instructions and execution: The intelligent control unit 1 sets the working pressure and flow rate of the conveying unit 3 according to the coating process requirements and sends them to the conveying unit 3. After receiving the instructions, the conveying unit 3 opens the flow control valve 32 and starts the conveying pump 31 to convey the coating liquid from the liquid storage tank 21 to the filtration unit 4 according to the set parameters.

[0046] Liquid filtration: After the coating liquid is transported into the filter unit 4, it is filtered through the built-in double-layer precision filter 41 of the filter unit 4 to effectively remove impurities and particles in the coating liquid. The filtered coating liquid is purer, providing high-quality coating liquid for the subsequent coating process.

[0047] Flow control and feedback: The filtered coating liquid enters the flow control unit 5. The high-precision flow sensor of the flow control unit 5 monitors the coating liquid flow in real time and transmits the flow data to the intelligent control unit 1. The intelligent control unit 1 compares the monitored flow data with the preset flow value. If the monitored flow value deviates from the preset value, the intelligent control unit 1 automatically adjusts the working parameters of the delivery unit 3 according to the degree of deviation, such as adjusting the pump speed or pump stroke of the delivery pump 31. Through real-time adjustment, the intelligent control unit 1 ensures that the liquid flow output by the delivery unit 3 accurately matches the requirements of the coating process.

[0048] Pressure regulation and stabilization: The pressure control unit 6 continuously monitors the liquid supply pressure during the entire coating process and automatically adjusts it based on real-time feedback to ensure the stability of the liquid supply pressure. The coating liquid is finally delivered to the coating head.

[0049] Through the above steps, the automatic liquid supply system provided by the present invention realizes accurate control of the stability, uniformity and precision of liquid supply in the coating process, significantly improving the coating efficiency and product quality. At the same time, the system also has the ability of self-diagnosis and adjustment, which reduces manual intervention, reduces production costs, and improves the automation and intelligence level of production.

[0050] The above is a detailed description of the preferred embodiments of the present invention, which cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An automatic liquid supply system in a coating process, characterized in that: The invention comprises an intelligent control unit (1), a liquid storage unit (2), a conveying unit (3), a filtering unit (4), a flow control unit (5) and a pressure control unit (6); the liquid storage unit (2) is used to store a coating liquid; the conveying unit (3) is arranged between the liquid storage unit (2) and the filtering unit (4) and is used to convey the coating liquid in the liquid storage unit (2) to the filtering unit (4); the filtering unit (4) is arranged between the conveying unit (3) and the flow control unit (5) and is used to filter the coating liquid; the flow control unit (5) is arranged between the filtering unit (4) and the pressure control unit (6) and is used to control the flow rate of the coating liquid. The invention relates to a method for realizing real-time monitoring and precise control of the liquid storage unit (2), the conveying unit (3), the filtering unit (4), the flow control unit (5) and the pressure control unit (6), so as to ensure the output stability of the coating liquid in the whole coating process; the liquid storage unit (2), the conveying unit (3), the filtering unit (4), the flow control unit (5) and the pressure control unit (6) are all connected to the intelligent control unit (1) for communication, and the intelligent control unit (1) collects and analyzes data from each unit, and performs intelligent regulation on the liquid storage unit (2), the conveying unit (3), the filtering unit (4), the flow control unit (5) and the pressure control unit (6) through a preset algorithm, so as to realize the automation and intelligence of the whole liquid supply process.

2. The automatic liquid supply system in a coating process according to claim 1, characterized in that: The liquid storage unit (2) comprises a liquid storage tank (21) and a liquid level detection device (22), and the liquid level detection device (22) is communicatively connected to the intelligent control unit (1).

3. The automatic liquid supply system in a coating process according to claim 1, characterized in that: The delivery unit (3) comprises a delivery pump (31) and a flow control valve (32); the flow control valve (32) is arranged between the delivery pump (31) and the liquid storage unit (2); and the delivery pump (31) is communicatively connected to the intelligent control unit (1).

4. The automatic liquid supply system in a coating process according to claim 1, characterized in that: The filter unit (4) has a built-in double-layer precision filter (41).

5. The automatic liquid supply system in a coating process according to claim 1, characterized in that: The flow control unit (5) has a flow sensor, and the flow sensor is communicatively connected to the intelligent control unit (1).

6. The automatic liquid supply system in a coating process according to claim 1, characterized in that: The intelligent control unit (1) is also communicatively connected to an audible and visual alarm (7).

7. A control method for an automatic liquid supply system in a coating process according to any one of claims 1 to 6, characterized in that: The following steps are involved: Liquid level monitoring and liquid replenishment: After the system is started, the liquid level in the liquid storage unit (2) is monitored in real time, and the data is transmitted to the intelligent control unit (1) in real time. When the liquid level is detected to be lower than the preset minimum safety value, the intelligent control unit (1) automatically starts the liquid replenishment program to ensure that the coating liquid in the liquid storage unit (2) is sufficient; Pumping instructions and execution: the intelligent control unit (1) sets the working pressure and flow rate of the conveying unit (3) according to the coating process requirements, and after receiving the instructions, the conveying unit (3) conveys the coating liquid from the liquid storage unit (2) to the filtering unit (4) according to the set parameters; Liquid filtration: the coating liquid flows into the filtering unit (4), and the filtering unit (4) filters impurities and particles in the coating liquid; Flow control and feedback: The filtered coating liquid enters the flow control unit (5), and the flow control unit (5) monitors the coating liquid flow in real time. The flow data is transmitted to the intelligent control unit (1) and compared with the preset flow value. If the monitored flow value deviates from the preset value, the intelligent control unit (1) automatically adjusts the working parameters of the conveying unit (3) according to the degree of deviation. Through real-time adjustment, the intelligent control unit (1) ensures that the liquid flow output by the conveying unit (3) accurately matches the requirements of the coating process. Pressure regulation and stabilization: The pressure control unit (6) continuously monitors the liquid supply pressure during the entire coating process and automatically adjusts it based on real-time feedback to ensure the stability of the liquid supply pressure.

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