Dip-coating equipment for rare earth super-hydrophilic optical coating

Abstract

The utility model discloses dip-coating equipment for a rare earth super-hydrophilic optical coating, which relates to the field of hydrophilic optical coatings and is characterized in that the coating with a preset conveying amount is sprayed into an area between two static pressure adjusting plates in a dip-coating cavity through an ultrasonic atomization nozzle; the distance between the two static pressure adjusting plates is adjusted, so that the pressure between the two static pressure adjusting plates is first preset pressure; and at a preset time interval, the distance between the two static pressure adjusting plates is adjusted, so that the pressure between the two static pressure adjusting plates is gradually increased. According to the utility model, a coating preparation method combining an ultrasonic atomization technology and a static pressure dip-coating method is combined, and the thickness and the uniformity of the coating are adjusted by controlling the pressure and the time of static pressure dip-coating, so that the coating can be uniformly covered on the surface of a base material.

Description

Technical Field

[0001] This utility model relates to the field of optical coatings, specifically to dipping equipment for rare earth superhydrophilic optical coatings. Background Technology

[0002] Optical coatings, as coating materials with special optical properties, have been widely used in various fields in recent years. With the advancement of technology and the booming development of emerging industries, the market demand for optical coatings continues to grow. The existing optical coating market offers a wide variety of products with diverse performance characteristics. From traditional anti-reflective and anti-reflective coatings to functional coatings with high transmittance, high reflectance, and special optical effects that have emerged in recent years, the development of optical coatings shows a diversified trend. Especially in fields such as architecture, automobiles, and electronic displays, optical coatings add more added value to products with their unique optical properties. Currently available superhydrophilic coatings still have many shortcomings in terms of preparation methods and performance. Traditional preparation methods are often complex and costly, and the stability and weather resistance of the prepared materials need improvement.

[0003] Due to their unique magnetic, optical, and electrical properties, rare earth elements are increasingly used in optical coatings. Rare earth optical coatings not only possess excellent optical properties, such as high light transmittance, high reflectivity, and low absorption, but also exhibit good stability and weather resistance, making them a current research hotspot. Meanwhile, with increasing environmental awareness, green and environmentally friendly optical coatings are becoming a new favorite in the market.

[0004] Rare earth superhydrophilic optical coatings, as a new type of environmentally friendly coating, have attracted widespread attention due to their excellent hydrophilicity, self-cleaning properties, and environmental performance. This type of coating not only achieves a superhydrophilic effect under ultraviolet light irradiation but also effectively reduces the formation of water stains and dirt, improving product cleanliness and lifespan.

[0005] However, existing rare earth superhydrophilic optical coatings have poor surface uniformity during preparation and are prone to clogging the pores of the material during spraying, which affects the permeability of the rare earth superhydrophilic optical coating, ultimately reducing the hydrophilicity of the material and the cleanliness and service life of the product.

[0006] Therefore, there is an urgent need for an apparatus for spraying rare earth superhydrophilic optical coatings onto substrates. Utility Model Content

[0007] One objective of this invention is to provide a dipping coating device for rare earth superhydrophilic optical coatings, which combines ultrasonic atomization technology and static pressure dipping coating method to ensure that the coating on the substrate is uniformly covered to the surface of the substrate.

[0008] This objective is achieved using the following technical solution:

[0009] A dipping coating device for rare earth superhydrophilic optical coatings includes a dipping chamber with two static pressure regulating plates inside. Several substrates are placed between the two static pressure regulating plates in the dipping chamber. An ultrasonic atomizing nozzle is installed on the dipping chamber, and a connecting pipe is installed on the ultrasonic atomizing nozzle. One end of the connecting pipe is located between the two static pressure regulating plates in the dipping chamber. A pressure-applying component is installed on the two static pressure regulating plates to adjust the distance between the two static pressure regulating plates in the dipping chamber.

[0010] This invention utilizes an ultrasonic nozzle to convert electrical energy into mechanical energy, and then, through the piezoelectric effect, converts the electrical energy into high-frequency mechanical energy, which is then transferred to the paint liquid to generate standing waves. When the paint liquid leaves the atomizing surface of the nozzle, it is broken into uniform micron- or even nano-sized fine droplets.

[0011] Atomized coating material is introduced into the area between two static pressure regulating plates within the dipping chamber. By applying a certain static pressure, the coating material is uniformly adhered to the substrate surface, forming a nanoscale coating with excellent performance. Simultaneously, the static pressure also helps to improve the density and thickness uniformity of the coating.

[0012] In this process, reducing volume in a confined space leads to increased gas pressure. When the mist coating is introduced, the density of the compressed gas increases, and the collision frequency between the droplets and the substrate increases. For every doubling of pressure, the average kinetic energy of the droplets increases by approximately 30%, which helps overcome surface tension and achieve more uniform adhesion.

[0013] Compared with existing dip coating devices, this invention combines ultrasonic atomization technology and static pressure dip coating. By applying pressure multiple times through static pressure, the coating slowly and continuously penetrates into the interior of the substrate. Compared with existing direct spraying devices, this invention penetrates more evenly and deeply, resulting in a substrate with better uniformity and hydrophilicity, ultimately improving the cleanliness and service life of the product.

[0014] Furthermore, the following steps are included when using it:

[0015] Step 1: The preset amount of paint is sprayed into the area between the two static pressure regulating plates in the dipping chamber through an ultrasonic atomizing nozzle;

[0016] Step 2: Adjust the distance between the two static pressure regulating plates so that the pressure between the two static pressure regulating plates is the first preset pressure;

[0017] Step 3: At a preset time interval, adjust the distance between the two static pressure regulating plates to gradually increase the pressure between them.

[0018] In step 1, the preset amount of paint delivered is 60% of the volume of the area between the two static pressure regulating plates. When the volume is reduced to 1 / 3 of the original value, the spraying energy consumption is reduced by 40%, but the adhesion is improved by 15%-20%. Therefore, the optimal volume compression ratio is usually controlled at 0.6, at which point the paint utilization rate can reach more than 85%. Excessive compression (<0.5) will lead to backsplatter loss.

[0019] When the pressure is applied for the first time, the pressure is increased at a low pressure, i.e., 30% of the preset maximum pressure, so that the coating can evenly cover the substrate and eliminate microscopic unevenness on the surface.

[0020] Meanwhile, the pressure is increased multiple times, each time by 10%-20% of the preset maximum pressure, with a preset time interval of no less than 15 minutes, to reduce elastic rebound and avoid stress concentration.

[0021] This invention achieves a balance between coating densification and interfacial chemical reactions through a three-stage pressure curve involving low-pressure wetting, medium-pressure compaction, and high-pressure bonding. Furthermore, the static pressure must overcome the surface tension of the pores within the coating to ensure effective filling of the substrate micropores, further ensuring the uniformity of the coating. Moreover, gradual penetration increases the penetration depth. Therefore, the coating prepared by this invention exhibits good hydrophilic properties.

[0022] On the other hand, several adjusting components are provided between the two static pressure adjusting plates in the impregnation chamber. The adjusting components include an actuating rod, with a first threaded rod and a second threaded rod respectively provided at both ends of the actuating rod. A first base is threadedly connected to the first threaded rod, and a second base is threadedly connected to the second threaded rod. A first fixing rod is provided on the first base, with one end of the first fixing rod passing through the second base. A second fixing rod is provided on the second base, with one end of the second fixing rod passing through the first base. When the actuating rod rotates, the first base and the second base move towards or in opposite directions. Substrate is connected to both the first base and the second base.

[0023] During the pressurization process, the average kinetic energy of the droplets increases. In order to further ensure better contact between the droplet-shaped coating and the substrate, this invention connects the substrate to the first base and the second base. By rotating the actuating rod, the first base and the second base move the substrate between the two static pressure regulating plates, thereby increasing the opportunity for interaction by moving the substrate.

[0024] Specifically, the actuating rod drives the first threaded rod and the second threaded rod to rotate together. The first fixing rod and the second fixing rod further fix the first base and the second base, so that the first base and the second base do not rotate with the first threaded rod and the second threaded rod. Therefore, when the first threaded rod and the second threaded rod rotate, the first base and the second base drive the substrate on them to move in opposite directions, thereby increasing the penetration and action efficiency by increasing the movement of the substrate.

[0025] To address this issue, and in order to better and more evenly spray the atomized paint into the area between the two static pressure regulating plates and distribute it uniformly within that space, this invention provides a rotating plate between the two first bases of two adjacent regulating components. A first actuating block is connected to a first fixed rod, and a second actuating block is connected to a second fixed rod. The first actuating block is hinged to one end of the first regulating rod, and the other end of the first regulating rod is hinged to the rotating plate. The second actuating block is hinged to one end of the second regulating rod, and the other end of the second regulating rod is hinged to the rotating plate. When the actuating rod rotates, it drives the rotating plate to rotate through the second actuating block and the first actuating block. The rotating plate is equipped with a spraying component, which includes several paint spray nozzles.

[0026] When the mist coating is sprayed in, the adjusting rod rotates, and the first base and the second base move the substrates on them toward or in opposite directions. At the same time, the rotating plate drives the spraying part to rotate, spraying the mist coating between the substrates of the two first bases of the two adjacent adjusting parts. The spiral rotation spraying improves the uniformity of the mist coating between the substrates of the two first bases of the two adjacent adjusting parts.

[0027] Furthermore, the spraying component includes a concentrically arranged rotating drive component and a fixed disk. The rotating drive component is coaxially connected to the rotating plate. The fixed disk is provided with several sliding grooves, each of which is equipped with a slider. The slider is equipped with a paint spray pipe. The slider and the rotating drive component are hinged together by a hinge rod. The rotation of the rotating drive component drives the slider to slide on the sliding groove through the hinge rod. The paint spray pipes are respectively connected to connecting pipes.

[0028] Preferably, the fixed plate is provided with at least four sliding grooves. When the rotating plate drives the spraying part to rotate, the rotating plate drives the rotating drive component to rotate, while the fixed plate remains stationary. The rotation of the rotating drive component drives the slider to slide on the sliding groove through the hinge rod.

[0029] Therefore, when the coating is introduced, while the substrate is sliding, the coating is introduced at different positions between the substrates of the two first bases of the two adjacent adjustment members, which further improves the uniformity of the coating between the substrates of the two first bases of the two adjacent adjustment members.

[0030] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0031] This invention relates to a dipping coating device for rare earth superhydrophilic optical coatings. This invention controls the distance between two static pressure regulating plates, and controls the pressure and time of static pressure dipping coating to adjust the thickness and uniformity of the coating, ensuring that the coating is evenly covered on the substrate surface.

[0032] Under the preparation device of this invention, the rare earth superhydrophilic optical coating on the substrate has strong adhesion and can be firmly attached to the surface of various substrates, such as metals, glass, and plastics.

[0033] Furthermore, compared to traditional pneumatic two-fluid spraying, ultrasonic nano-atomization hydrostatic dip coating can achieve better uniformity, thinner coating thickness, and higher precision.

[0034] Furthermore, the preparation device of this invention is simple to operate, has minimal coating loss, and can produce high-quality nanoscale thin film coatings.

[0035] On the other hand, this invention achieves optimal atomization by adjusting the frequency, power, and phase of the ultrasonic waves. For example, for liquids with high viscosity, a lower frequency and higher power can be used to increase the droplet separation rate. For applications requiring precise control of droplet size and distribution, a higher frequency and lower power can be used to reduce droplet aggregation and deposition.

[0036] Because this invention can generate uniform and fine droplets, the coating can be smoother, more uniform, and denser, thereby improving the product's appearance, performance, and durability. It can also reduce coating thickness and material consumption, saving energy and costs, and ensuring stable operation of optical devices in humid environments. Attached Figure Description

[0037] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0038] Figure 1 This is a schematic diagram of the dip-coating cavity.

[0039] Figure 2 This is a schematic diagram of the adjusting component;

[0040] Figure 3 A schematic diagram of the structure when the adjusting rod rotates;

[0041] Figure 4 A schematic diagram of a structure with a substrate connected to the first base;

[0042] Figure 5 A schematic diagram of a structure in which a rotating plate is provided between the two first bases of two adjacent adjusting components;

[0043] Figure 6 A schematic diagram of a structure in which the adjusting component drives the rotating plate to rotate;

[0044] Figure 7 This is a schematic diagram of the structure between the rotating plate and the part to be painted.

[0045] Figure 8 This is a schematic diagram of the structure of the spray-painted part;

[0046] Figure 9 This is a schematic diagram of the structure of the slider of the sprayed part sliding on the groove.

[0047] The attached diagram shows the markings and corresponding component names:

[0048] 1-Support frame, 2-Dipping chamber, 3-Static pressure adjusting plate, 4-Substrate, 5-Ultrasonic atomizing nozzle, 6-Connecting pipe, 7-Paint chamber, 8-Ultrasonic generator, 9-Moving rod, 10-Gearbox, 11-Stepper motor, 12-Rotating plate, 13-Connecting shaft, 14-First connecting column, 15-Second connecting column, 16-First adjusting rod, 17-Second adjusting rod, 18-First base, 19-Second base, 20-Second fixing rod, 21-First threaded rod, 22-Second threaded rod, 23-Second action block, 24-First fixing rod, 25-First action block, 26-Fixed disc, 27-Rotation drive component, 271-Hinge rod, 272-Slide groove, 273-Slider, 274-Paint spray nozzle. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0050] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0051] Example 1

[0052] like Figure 1 As shown, it includes a dip coating chamber 2, a support frame 1 is provided below the dip coating chamber 2, two static pressure regulating plates 3 are provided inside the dip coating chamber 2, several substrates 4 are provided between the two static pressure regulating plates 3 inside the dip coating chamber 2, an ultrasonic atomizing nozzle 5 is provided on the dip coating chamber 2, a connecting pipe 6 is provided on the ultrasonic atomizing nozzle 5, and one end of the connecting pipe 6 is located between the two static pressure regulating plates 3 inside the dip coating chamber 2.

[0053] The coating chamber 2 is equipped with a coating chamber 7 and an ultrasonic generator 8, both of which are connected to the ultrasonic atomizing nozzle 5.

[0054] The following steps are included when using this device:

[0055] Step 1: The preset amount of paint is sprayed into the area between the two static pressure regulating plates 3 in the dipping chamber 2 through the ultrasonic atomizing nozzle 5. The preset amount of paint is 60% of the volume of the area between the two static pressure regulating plates 3.

[0056] Step 2: Adjust the distance between the two static pressure regulating plates 3 so that the pressure between the two static pressure regulating plates 3 is the first preset pressure, which is 30% of the preset maximum pressure;

[0057] Step 3: At a preset time interval, adjust the distance between the two static pressure regulating plates 3 so that the pressure between the two static pressure regulating plates 3 gradually increases. Each time, the pressure between the two static pressure regulating plates 3 increases by 10%-20% of the preset maximum pressure, and the preset time interval is no less than 15 minutes.

[0058] Step 4: Place the dip-coated substrate 4 in a drying chamber for drying, followed by curing, so that the coating achieves the required physical and chemical properties.

[0059] During use, the paint is placed in the paint chamber 7. The ultrasonic generator 8 generates a high-frequency electrical signal 15, typically 20kHz-100kHz. The frequency directly affects the size of the atomized droplets; the higher the frequency, the smaller the droplets. For example, 40kHz corresponds to approximately 45μm, and 20kHz corresponds to approximately 90μm. Electrical energy is converted into mechanical vibration energy through the piezoelectric effect. The ultrasonic atomizing nozzle 5 is made of corrosion-resistant materials such as titanium alloy and has a built-in piezoelectric transducer. After receiving the high-frequency signal, it generates longitudinal vibration, forming a standing wave at the tip of the nozzle, causing the liquid film to break into uniform micron-sized droplets.

[0060] The ultrasonic atomizing nozzle 5 sprays the coating in a mist into the area between the two static pressure regulating plates 3 in the dipping chamber 2. The preset delivery amount of the coating is 60% of the volume of the area between the two static pressure regulating plates 3.

[0061] The impregnation chamber 2 is also equipped with a gearbox 10, on which a stepper motor 11 is mounted. A moving rod 9 is connected to the static pressure regulating plate 3. The moving rod 9 is connected to the gearbox 10, and the gearbox acts on the moving rod. The stepper motor 11 adjusts the gearbox, thereby adjusting the distance the moving rod moves, thus completing the distance adjustment between the two static pressure regulating plates. In use, the rated current of the stepper motor is set to the driver output. The higher the microstepping, the smoother the movement (e.g., when the microstepping = 20, the pulse equivalent = lead screw pitch / (200 × gear ratio)). At the same time, the direction is controlled by switching the forward and reverse directions through the DIR+ / - signal level (high level for forward rotation, low level for reverse rotation), thereby precisely controlling the moving position and direction of the static pressure regulating plate 3, and achieving accurate control of the pressure between the two static pressure regulating plates 3.

[0062] Example 2

[0063] Based on the above embodiments, several adjusting components are provided between the two static pressure adjusting plates 3 inside the dipping cavity 2. These adjusting components include, for example... Figure 2 As shown, the device includes an actuating rod, with its two ends connected to two fixed plates, allowing it to rotate circumferentially between the two plates. A first threaded rod 21 and a second threaded rod 22 are respectively provided at both ends of the actuating rod. When the actuating rod rotates, it drives the first threaded rod 21 and the second threaded rod 22 to rotate together. A first base 18 is threadedly connected to the first threaded rod 21, and a second base 19 is threadedly connected to the second threaded rod 22. A first fixing rod 24 is provided on the first base 18, with one end of the first fixing rod 24 passing through the second base 19. A second fixing rod 20 is provided on the second base 19, with one end of the second fixing rod 20 passing through the first base 18.

[0064] When the actuating rod rotates, since the first base 18 and the second base 19 do not rotate with the first threaded rod 21 and the second threaded rod 22, the first base 18 and the second base 19 respectively drive the first fixed rod 24 and the second fixed rod 20 on them to move together, such as... Figure 3 As shown, the first base 18 and the second base 19 move relative to each other. One end of the first fixing rod 24 passes through the second base 19, and one end of the second fixing rod 20 passes through the first base 18. When the actuating rod rotates in the opposite direction, the first base 18 and the second base 19 move in opposite directions, returning to their original positions. Figure 2 The state of the first base 18 and the second base 19 are both connected to the base material 4, such as... Figure 4 As shown.

[0065] When the positions of the two static pressure regulating plates 3 are adjusted, that is, during the pressurization process, the actuating rod rotates, driving the first base 18 and the second base 19 to move, thereby making the substrate 4 better contact with the mist coating between the two static pressure regulating plates 3.

[0066] Example 3

[0067] Based on Example 2, such as Figure 5 As shown, a rotating plate 12 is provided between the two first bases 18 of two adjacent adjusting components. A first actuating block 25 is connected to the first fixed rod 24, and a second actuating block 23 is connected to the second fixed rod 20. The first actuating block 25 is hinged to one end of the first adjusting rod 16, and the other end of the first adjusting rod 16 is hinged to the rotating plate 12. The second actuating block 23 is hinged to one end of the second adjusting rod 17, and the other end of the second adjusting rod 17 is hinged to the rotating plate 12. When the actuating rod rotates, the rotating plate 12 is driven to rotate through the second actuating block 23 and the first actuating block 25. A spraying component is provided on the rotating plate 12, and the spraying component includes several paint spray pipes 274.

[0068] Specifically, the rotating plate 12 is provided with a first connecting post 14 and a second connecting post 15. The other end of the second adjusting rod 17 is hinged to the first connecting post 14 on the rotating plate 12, and the other end of the first adjusting rod 16 is hinged to the second connecting post 15 on the rotating plate 12.

[0069] In use, when the actuating rod rotates, it causes the first base 18 and the second base 19 to move towards or in opposite directions. The first fixed rod 24 and the second fixed rod 20 on the first base 18 and the second base 19 also move synchronously. Therefore, the first fixed rod 24 and the second fixed rod 20 drive the second actuating block 23 and the first actuating block 25 on them to move together. Figure 6 As shown, during the movement of the second action block 23 and the first action block 25, the second fixing rod 20 and the first fixing rod 24 act on the rotating plate 12, thereby realizing the rotation of the rotating plate 12.

[0070] A paint spray nozzle 274 is provided on the rotating plate 12. Therefore, the paint spray nozzle 274 is located between the two first bases 18 of the two adjacent adjusting members, enabling paint to be sprayed between the substrates of the two first bases 18 of the two adjacent adjusting members. Furthermore, the rotating spray during the spraying process is more conducive to the uniform distribution of the paint. When the ultrasonic atomizing nozzle 5 sprays paint into the area between the two static pressure adjusting plates 3 through the connecting pipe 6, the actuating rod rotates, driving the first base 18 and the second base 19 to move. Simultaneously, the rotation of the actuating rod drives the rotating plate 12 to rotate through the first adjusting rod 16 and the second adjusting rod 17. The paint spray nozzle 274 is connected to the connecting pipe 6, and the substrate also moves during the spraying process, thus further improving the uniform distribution of the paint.

[0071] Example 4

[0072] Based on the above embodiments, such as Figure 7As shown, a spraying component is provided on the rotating plate 12. The spraying component includes a rotating drive component 27 and a fixed disk 26 arranged concentrically. The rotating plate 12 and the rotating drive component 27 of the spraying component are coaxially connected through a connecting shaft 13. When the rotating plate 12 rotates, the rotating plate 12 drives the rotating drive component 27 to rotate together.

[0073] Painted parts such as Figure 8 As shown, the fixed plate 26 is provided with several sliding grooves 272, each of which is provided with a slider 273. The slider 273 is provided with a paint spray pipe 274. The slider 273 is hinged to the rotating drive 27 by a hinge rod 271. The rotating drive 27 rotates and drives the slider 273 to slide on the sliding groove 272 through the hinge rod 271.

[0074] When the rotating drive component 27 rotates, the fixed disk 26 does not rotate. The rotating drive component 27 drives one end of the hinge rod 271 on it to rotate, and the hinge rod 271 drives the slider 273 at the other end to slide on the slide groove 272. Figure 9 As shown, when the slider 273 slides, it drives the paint spray nozzle 274 to slide together. By adjusting the position of the paint spray nozzle 274 between the two substrates, the spraying position is adjusted, making the paint distribution more uniform and improving the effect of subsequent processes.

[0075] In this embodiment, the fixed plate 26 is provided with four sliding grooves 272.

[0076] The terms "first," "second," and "third" used in this document are merely for clarity of description and are not intended to restrict any order or emphasize importance. Furthermore, the term "connection" used in this document, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

[0077] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A dipping coating apparatus for rare earth superhydrophilic optical coatings, characterized in that, It includes a dip coating chamber (2), two static pressure regulating plates (3) are provided in the dip coating chamber (2), several substrates (4) are provided between the two static pressure regulating plates (3) in the dip coating chamber (2), an ultrasonic atomizing nozzle (5) is provided on the dip coating chamber (2), a connecting pipe (6) is provided on the ultrasonic atomizing nozzle (5), and one end of the connecting pipe (6) is located between the two static pressure regulating plates (3) in the dip coating chamber (2); Two static pressure regulating plates (3) are equipped with pressure-increasing components, which are used to adjust the distance between the two static pressure regulating plates (3) in the impregnation chamber (2).

2. The dipping equipment for rare earth superhydrophilic optical coatings according to claim 1, characterized in that, The pressurizing component includes a gearbox (10) connected to a static pressure regulating plate (3), and a stepper motor (11) is connected to the gearbox (10).

3. The dipping equipment for rare earth superhydrophilic optical coatings according to claim 1, characterized in that, The ultrasonic atomizing nozzle (5) is connected to a coating chamber (7).

4. The dipping equipment for rare earth superhydrophilic optical coatings according to claim 1, characterized in that, A support frame (1) is provided below the dip coating chamber (2).

5. The dipping equipment for rare earth superhydrophilic optical coatings according to claim 1, characterized in that, Several adjusting components are provided between the two static pressure adjusting plates (3) in the dipping chamber (2). The adjusting components include a first base (18) and a second base (19). The first base (18) and the second base (19) are both connected to a substrate (4). The adjusting components are used to make the first base (18) and the second base (19) move towards each other or in opposite directions.

6. The dipping equipment for rare earth superhydrophilic optical coatings according to claim 5, characterized in that, The adjusting component includes an actuating rod, with a first threaded rod (21) and a second threaded rod (22) respectively at both ends. A first base (18) is threaded onto the first threaded rod (21), and a second base (19) is threaded onto the second threaded rod (22). A first fixing rod (24) is provided on the first base (18), with one end of the first fixing rod (24) passing through the second base (19). A second fixing rod (20) is provided on the second base (19), with one end of the second fixing rod (20) passing through the first base (18). When the actuating rod rotates, the first base (18) and the second base (19) move toward or in opposite directions.

7. The dipping equipment for rare earth superhydrophilic optical coatings according to claim 6, characterized in that, A rotating plate (12) is provided between the two first bases (18) of two adjacent adjusting parts. A first action block (25) is connected to the first fixed rod (24), and a second action block (23) is connected to the second fixed rod (20). The first action block (25) is hinged to one end of the first adjusting rod (16), and the other end of the first adjusting rod (16) is hinged to the rotating plate (12). The second action block (23) is hinged to one end of the second adjusting rod (17), and the other end of the second adjusting rod (17) is hinged to the rotating plate (12). When the action rod rotates, the rotating plate (12) is driven to rotate through the second action block (23) and the first action block (25). A spraying part is provided on the rotating plate (12), and the spraying part includes several paint spray pipes (274).

8. The dipping equipment for rare earth superhydrophilic optical coatings according to claim 7, characterized in that, The spraying component includes a concentrically arranged rotating drive (27) and a fixed disk (26). The rotating drive (27) is coaxially connected to the rotating plate (12). The fixed disk (26) is provided with several sliding grooves (272). Each sliding groove (272) is provided with a slider (273). The slider (273) is provided with a paint spray pipe (274). The slider (273) and the rotating drive (27) are hingedly connected by a hinge rod (271). The rotating drive (27) rotates and drives the slider (273) to slide on the sliding groove (272) through the hinge rod (271).

9. The dipping equipment for rare earth superhydrophilic optical coatings according to claim 8, characterized in that, The fixed plate (26) is provided with at least four grooves (272).

10. The dipping equipment for rare earth superhydrophilic optical coatings according to claim 7, characterized in that, The paint spray nozzle (274) is connected to the connecting pipe (6).

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