Dip-coating device and process for rare earth super-hydrophilic optical coating

Abstract

The invention discloses a dip-coating device and process for rare earth super-hydrophilic optical paint, and relates to the field of hydrophilic optical paints.The dip-coating device and process are characterized in that paint 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 coating preparation method, the ultrasonic atomization technology and the static pressure dip-coating method are combined, the thickness and uniformity of the coating are adjusted by controlling the pressure and time of static pressure dip-coating, and it can be guaranteed that the surface of the base material is evenly covered with the coating.

Description

Technical Field

[0001] The invention relates to the field of optical coatings, and in particular to a dipping device and process for rare earth super-hydrophilic optical coatings. Background Art

[0002] As a coating material with special optical properties, optical coatings have been widely used in many fields in recent years. With the advancement of science and technology and the vigorous development of emerging industries, the market demand for optical coatings continues to grow. In the existing optical coatings market, there are a wide variety of products with different performances. From traditional anti-reflective coatings and anti-reflective coatings to functional coatings with high transmittance, high reflectivity and special optical effects that have emerged in recent years, the development of optical coatings has shown a diversified trend. Especially in the fields of architecture, automobiles, electronic displays, etc., optical coatings add more added value to products with their unique optical properties. The super hydrophilic coatings currently on the market still have many shortcomings in preparation methods and performance. Traditional preparation methods are often complex and costly, and the prepared materials need to be improved in terms of stability and weather resistance.

[0003] Rare earth elements are increasingly used in optical coatings due to their unique magnetic, optical and electrical properties. Rare earth optical coatings not only have excellent optical properties, such as high light transmittance, high reflectivity and low absorption, but also have good stability and weather resistance, becoming a hot topic in current research. At the same time, with the increasing awareness of environmental protection, green and environmentally friendly optical coatings have become the new favorite of the market.

[0004] As a new type of environmentally friendly coating, rare earth super-hydrophilic optical coating has attracted wide attention due to its good hydrophilicity, self-cleaning and environmental performance. This coating can not only achieve super-hydrophilic effect under ultraviolet light, but also effectively reduce the formation of water stains and stains, and improve the cleanliness and service life of the product.

[0005] However, during the preparation process of existing rare earth super hydrophilic optical coatings, the surface uniformity of the prepared coating is poor, and during the spraying process, the pores of the material are easily blocked, thereby affecting the permeability of the rare earth super hydrophilic optical coating, and ultimately reducing the hydrophilicity of the material, reducing the cleanliness and service life of the product.

[0006] Therefore, developing a super-hydrophilic optical coating with simple preparation process, low cost and excellent performance has become an urgent problem to be solved in the current field of materials science. Summary of the invention

[0007] One object of the present invention is to provide a rare earth super-hydrophilic optical coating dipping device and process, which combines ultrasonic atomization technology and static pressure dipping method, and adjusts the thickness and uniformity of the coating by controlling the pressure and time of static pressure dipping, thereby ensuring that the coating is evenly covered on the surface of the substrate.

[0008] This purpose is achieved by adopting the following technical solutions:

[0009] A rare earth super-hydrophilic optical coating dipping device and process, comprising a dipping chamber, two static pressure regulating plates are arranged in the dipping chamber, a plurality of substrates are arranged between the two static pressure regulating plates in the dipping chamber, an ultrasonic atomizing nozzle is arranged on the dipping chamber, a connecting pipe is arranged on the ultrasonic atomizing nozzle, and one end of the connecting pipe is located between the two static pressure regulating plates in the dipping chamber;

[0010] The dip coating process includes the following steps:

[0011] Step 1, spraying a preset delivery amount of coating into the area between two static pressure regulating plates in the dipping chamber through an ultrasonic atomizing nozzle;

[0012] Step 2, adjusting the distance between the two static pressure regulating plates so that the pressure between the two static pressure regulating plates is a first preset pressure;

[0013] Step 3: at a preset time interval, adjust the distance between the two static pressure regulating plates so that the pressure between the two static pressure regulating plates gradually increases.

[0014] The present invention uses an ultrasonic nozzle to convert electrical energy into mechanical energy, and converts electrical energy into high-frequency mechanical energy through the piezoelectric effect, which is then transmitted to the coating liquid to generate standing waves. When the coating liquid leaves the atomizing surface of the nozzle, it is broken into uniform micron-level or even nanometer-level fine mist droplets.

[0015] The atomized coating is passed into the area between the two static pressure regulating plates in the dipping chamber, and a certain static pressure is applied to evenly adhere the coating to the surface of the substrate to form a nano-scale coating with excellent performance. At the same time, the static pressure also helps to improve the density and thickness uniformity of the coating.

[0016] Among them, reducing the volume in a confined space will cause the gas pressure to increase. When the mist paint is introduced, the density of the compressed gas increases, and the frequency of collision between the droplets and the substrate increases. For every doubling of the pressure, the average kinetic energy of the droplets increases by about 30%, which helps to overcome the surface tension and achieve more uniform adhesion.

[0017] Compared with the existing dip coating process, the present invention combines the ultrasonic atomization technology and the static pressure dip coating method to prepare the coating, and applies pressure through static pressure for many times, so that the coating slowly and continuously penetrates into the interior of the substrate. Compared with the existing direct spraying process, the process of the present invention penetrates more evenly and deeper, so the obtained substrate has better uniformity and better hydrophilicity, which ultimately improves the cleanliness and service life of the product.

[0018] Furthermore, the preset delivery amount of paint in step 1 is 60% of the volume of the area between the two static pressure regulating plates. When the volume of the space is reduced to 1 / 3 of the original value, the energy consumption of spraying 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 time the paint utilization rate can reach more than 85%. Excessive compression (<0.5) will lead to splashing loss.

[0019] When the present invention applies pressure for the first time, the pressure is increased at a low pressure, that is, 30% of the preset maximum pressure, so that the coating evenly covers the substrate and eliminates microscopic unevenness on the surface.

[0020] At the same time, the pressure is increased multiple times subsequently, each time increasing the preset maximum pressure by 10%-20%, and the preset time interval is not less than 15 minutes, so as to reduce elastic rebound and avoid stress concentration.

[0021] The present invention achieves a balance between coating densification and interfacial chemical reaction through a three-stage pressure curve of low-pressure infiltration, medium-pressure densification and high-pressure bonding; and the static pressure needs to break through the surface tension of the pores inside the coating to ensure effective filling of the micropores of the substrate, further ensuring the uniformity of the coating, and the penetration depth can be increased by gradual penetration. Therefore, the coating prepared by the present invention has good hydrophilic properties.

[0022] On the other hand, a number of adjusting parts are arranged between the two static pressure adjusting plates in the dipping chamber, and the adjusting parts include an acting rod, and a first threaded rod and a second threaded rod are arranged at both ends of the acting rod respectively, 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 arranged on the first base, and one end of the first fixing rod passes through the second base, a second fixing rod is arranged on the second base, and one end of the second fixing rod passes through the first base, when the acting rod rotates, the first base and the second base move toward or in opposite directions, and substrates are 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, the present invention connects the substrate to the first base and the second base, and by rotating the action rod, the first base and the second base drive the substrate to move between the two static pressure adjustment plates, thereby increasing the chance of interaction by moving the substrate.

[0024] Specifically, the action rod drives the first threaded rod and the second threaded rod to rotate together, and the first fixed rod and the second fixed 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 substrates thereon to move toward or in opposite directions, thereby improving the penetration and action efficiency by increasing the movement of the substrate.

[0025] In this regard, in order to enable the connecting pipe to better and evenly spray the mist paint into the area between the two static pressure adjusting plates and evenly distribute it in the space, the present invention arranges a rotating plate between the two first bases of two adjacent adjusting members, the first fixed rod is connected to a first action block, the second fixed rod is connected to a second action block, the first action block is hinged to one end of the first adjusting rod, and the other end of the first adjusting rod is hinged to the rotating plate; the second action block is hinged to one end of the second adjusting rod, and the other end of the second adjusting rod is hinged to the rotating plate; when the action rod rotates, the rotating plate is driven to rotate by the second action block and the first action block, and a spraying part is arranged on the rotating plate, and the spraying part includes a plurality of paint nozzles.

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

[0027] Furthermore, the spraying part includes a concentrically arranged rotating driving part and a fixed plate, the rotating driving part is coaxially connected to the rotating plate, a plurality of slide grooves are arranged on the fixed plate, each slide groove is provided with a slider, a paint nozzle is arranged on the slider, a hinge rod is hinged between the slider and the rotating driving part, the rotating driving part rotates to drive the slider to slide on the slide groove through the hinge rod, and the paint nozzles are respectively connected to the connecting pipes.

[0028] Preferably, at least four slide grooves are arranged on the fixed plate. When the rotating plate drives the spraying part to rotate, the rotating plate drives the rotating driving part to rotate, the fixed plate remains stationary, and the rotating driving part rotates to drive the slider to slide on the slide groove through the hinge rod.

[0029] Therefore, when the paint is introduced, the paint is introduced at different positions between the substrates of the two first bases of two adjacent adjusting members while the substrate is sliding, further improving the uniformity of the paint between the substrates of the two first bases of two adjacent adjusting members.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] The present invention discloses a rare earth super-hydrophilic optical coating dipping device and process. The present invention combines the ultrasonic atomization technology with the coating preparation method of the static pressure dipping method, and adjusts the thickness and uniformity of the coating by controlling the pressure and time of the static pressure dipping method, thereby ensuring that the coating evenly covers the surface of the substrate.

[0032] The rare earth super hydrophilic optical coating of the present invention has good weather resistance and corrosion resistance. The rare earth element can enhance the anti-oxidation and UV resistance of the coating, so that it can maintain stable performance in various harsh environments. In addition, it has good wear resistance, can resist friction and scratches in daily use, and maintain surface smoothness and hydrophilicity.

[0033] Under the dipping process of the present invention, the rare earth super-hydrophilic optical coating has strong adhesion and can be firmly attached to the surfaces of various substrates, such as metal, glass, plastic, etc.

[0034] In addition, compared with traditional pneumatic two-fluid spraying, ultrasonic nano-atomization static pressure dipping coating can achieve better uniformity, thinner coating thickness and higher precision.

[0035] In addition, the dip coating process of the present invention is simple to operate, has little coating loss, and can prepare high-quality nano-scale thin film coatings.

[0036] The present invention can achieve the best atomization effect by adjusting the frequency, power and phase of the ultrasonic wave. For example, for liquids with higher viscosity, a lower frequency and a higher power can be used to increase the separation speed of the droplets. For applications that require precise control of the droplet size and distribution, a higher frequency and a lower power can be used to reduce the aggregation and deposition of the droplets.

[0037] Since the present invention can produce uniform and fine droplets, the coating can be made smoother, more uniform and tighter, thereby improving the appearance, performance and durability of the product. It can also reduce the thickness and consumables of the coating, save energy and cost, and ensure the stable operation of optical devices in a humid environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0039] Figure 1 It is a structural schematic diagram of the dipping chamber;

[0040] Figure 2 It is a structural schematic diagram of the regulating member;

[0041] Figure 3 It is a structural schematic diagram of the adjusting member when the action rod rotates;

[0042] Figure 4 It is a structural schematic diagram of a substrate connected to a first base;

[0043] Figure 5 It is a structural schematic diagram of a rotating plate disposed between two first bases of two adjacent adjusting members;

[0044] Figure 6 It is a structural schematic diagram of the adjusting member driving the rotating plate to rotate;

[0045] Figure 7 It is a schematic diagram of the structure between the rotating plate and the spraying part;

[0046] Figure 8 It is a schematic diagram of the structure of the sprayed parts;

[0047] Fig. 9 It is a structural schematic diagram of the sliding block of the spraying part sliding on the sliding groove.

[0048] Marks and corresponding parts names in the attached drawings:

[0049] 1-support frame, 2-dipping chamber, 3-static pressure adjustment plate, 4-substrate, 5-ultrasonic atomizing nozzle, 6-connecting pipe, 7-coating chamber, 8-ultrasonic generator, 9-moving rod, 10-transmission, 11-stepping 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 fixed rod, 21-first threaded rod, 22-second threaded rod, 23-second action block, 24-first fixed rod, 25-first action block, 26-fixed disk, 27-rotating driving member, 271-hinge rod, 272-slide groove, 273-slider, 274-coating nozzle. DETAILED DESCRIPTION

[0050] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0051] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention.

[0052] Example 1

[0053] like Figure 1As shown, it includes a dipping chamber 2, a support frame 1 is arranged below the dipping chamber 2, two static pressure regulating plates 3 are arranged in the dipping chamber 2, a plurality of substrates 4 are arranged between the two static pressure regulating plates 3 in the dipping chamber 2, an ultrasonic atomizing nozzle 5 is arranged on the dipping chamber 2, a connecting pipe 6 is arranged 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 dipping chamber 2;

[0054] The coating chamber 7 and the ultrasonic generator 8 are arranged on the dipping chamber 2 , and both the coating chamber 7 and the ultrasonic generator 8 are connected to the ultrasonic atomizing nozzle 5 .

[0055] The dip coating process includes the following steps:

[0056] Step 1, spraying a preset delivery amount of coating into the area between the two static pressure regulating plates 3 in the dipping chamber 2 through the ultrasonic atomizing nozzle 5, wherein the preset delivery amount of coating is 60% of the volume of the area between the two static pressure regulating plates 3;

[0057] Step 2, adjusting the distance between the two static pressure regulating plates 3 so that the pressure between the two static pressure regulating plates 3 is a first preset pressure, and the first preset pressure is 30% of the preset maximum pressure;

[0058] 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, and the pressure between the two static pressure regulating plates 3 increases by 10%-20% of the preset maximum pressure each time, and the preset time interval is not less than 15 minutes.

[0059] Step 4, placing the dip-coated substrate 4 in a drying chamber for drying, and then performing a curing treatment to allow the coating to achieve the desired physical and chemical properties.

[0060] When in use, the paint is placed in the paint cavity 7, and the ultrasonic generator 8 generates a high-frequency electrical signal 15, usually 20kHz-100kHz, whose frequency directly affects the size of the atomized droplets. The higher the frequency, the smaller the droplets. For example, 40kHz corresponds to about 45μm, and 20kHz corresponds to about 90μm. The piezoelectric effect converts electrical energy into mechanical vibration energy. 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, and a standing wave is formed at the top of the nozzle, which breaks the liquid film into uniform micron-sized droplets.

[0061] The ultrasonic atomizing nozzle 5 sprays the coating in the form of 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 .

[0062] The coating chamber 2 is also provided with a transmission 10, and the transmission 10 is provided with a stepper motor 11. The static pressure regulating plate 3 is connected with a moving rod 9, and the moving rod 9 is connected to the transmission 10. The transmission acts on the moving rod, and the transmission is adjusted by the stepper motor 11, thereby adjusting the distance of the moving rod, and completing the distance adjustment between the two static pressure regulating plates. When in use, the rated current of the stepper motor sets the driver output. The higher the subdivision number, the smoother the movement (such as when the subdivision number = 20, the pulse equivalent = lead screw pitch / (200×tooth ratio)). At the same time, the direction control switches the forward and reverse rotation through the DIR+ / - signal level (high level forward rotation, low level reverse rotation), thereby accurately controlling the moving position and direction of the static pressure regulating plate 3, and realizing accurate control of the pressure between the two static pressure regulating plates 3.

[0063] In some embodiments, the coating in the coating cavity 7 includes the following components in parts by weight:

[0064] 5-15 parts of rare earth element compound, 10-25 parts of silica sol, 5-15 parts of modified silica sol, 5-10 parts of polymer monomer, 30-50 parts of initiator, 30-50 parts of solvent deionized water + ethanol, 1-5 parts of surfactant, 0.1-5 parts of cross-linking agent, and appropriate amounts of other additives.

[0065] Among them, the rare earth element compound can be rare earth sulfate, rare earth phosphate, rare earth sulfide, etc., which is used to provide optical properties and stability of the coating, and the rare earth element can be cerium or lanthanum;

[0066] Silica sol is the basic material of the coating, providing stability and film-forming properties for the coating. The particle size of silica sol is 10-20nm, accounting for 10%-20% of the total ratio.

[0067] Modified silica sol is modified by grafting functional groups such as olefinic bonds and sulfonic acid groups to improve the hydrophilicity of the coating and the compatibility with other components.

[0068] The polymer monomers are selected to have hydrophilicity, optical transparency and good film-forming properties, such as acrylic monomers, vinyl monomers, etc., to improve the film-forming properties and optical properties of the coating.

[0069] The initiator is selected to be an initiator suitable for the polymerization of the high molecular weight monomer, such as benzoyl peroxide, lauroyl peroxide, etc., to initiate the polymerization reaction of the high molecular weight monomer.

[0070] Environmentally friendly solvents such as deionized water, ethanol, and isopropanol are selected as solvents to adjust the viscosity and construction performance of the coating.

[0071] Other additives such as defoamers, leveling agents, thickeners, etc. are used to improve the construction performance of the coating and the quality of the finished product.

[0072] Example 2

[0073] On the basis of the above embodiment, a plurality of adjusting members are arranged between the two static pressure adjusting plates 3 in the dipping chamber 2, such as Figure 2 As shown, it includes an action rod, and the two ends of the action rod are respectively connected to the two fixed plates, and the action rod can rotate circumferentially on the two fixed plates. The two ends of the action rod are respectively provided with a first threaded rod 21 and a second threaded rod 22, and when the action rod rotates, the first threaded rod 21 and the second threaded rod 22 are driven to rotate together. The first threaded rod 21 is threadedly connected to the first base 18, and the second threaded rod 22 is threadedly connected to the second base 19. The first base 18 is provided with a first fixed rod 24, and one end of the first fixed rod 24 passes through the second base 19. The second base 19 is provided with a second fixed rod 20, and one end of the second fixed rod 20 passes through the first base 18.

[0074] When the action rod rotates, since the first base 18 and the second base 19 do not rotate together 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 fixing rod 24 and the second fixing rod 20 thereon to move together. 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 action rod rotates in the opposite direction, the first base 18 and the second base 19 move in opposite directions and return to Figure 2 The first base 18 and the second base 19 are both connected to the substrate 4, such as Figure 4 shown.

[0075] When the positions of the two static pressure regulating plates 3 are adjusted, that is, during the process of pressurization, the action rod rotates, driving the first base 18 and the second base 19 to move, thereby allowing the substrate 4 to better contact with the mist coating between the two static pressure regulating plates 3.

[0076] Example 3

[0077] On the basis of Example 2, Figure 5 As shown, a rotating plate 12 is arranged between the two first bases 18 of two adjacent adjusting members, a first acting block 25 is connected to the first fixed rod 24, and a second acting block 23 is connected to the second fixed rod 20. The first acting 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 acting 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 acting rod rotates, the rotating plate 12 is driven to rotate by the second acting block 23 and the first acting block 25, and a spraying part is arranged on the rotating plate 12, and the spraying part includes a plurality of paint nozzles 274.

[0078] Specifically, a first connecting column 14 and a second connecting column 15 are provided on the rotating plate 12, the other end of the second adjusting rod 17 is hingedly connected to the first connecting column 14 on the rotating plate 12, and the other end of the first adjusting rod 16 is hingedly connected to the second connecting column 15 on the rotating plate 12.

[0079] When in use, when the action rod rotates, it drives the first base 18 and the second base 19 to move toward or in the opposite direction, and the first fixing rod 24 and the second fixing rod 20 on the first base 18 and the second base 19 also move synchronously, so the first fixing rod 24 and the second fixing rod 20 drive the second action block 23 and the first action block 25 thereon to move together, such as Figure 6 As shown, during the movement of the second acting block 23 and the first acting 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 .

[0080] A paint spray pipe 274 is provided on the rotating plate 12, so the paint spray pipe 274 is located between the two first bases 18 of the two adjacent adjusting parts, and can spray paint between the substrates of the two first bases 18 of the two adjacent adjusting parts, and the spraying is rotated during the spraying process, which is more conducive to the uniform distribution of the paint. In addition, when the ultrasonic atomizing nozzle 5 sprays the paint into the area between the two static pressure regulating plates 3 through the connecting pipe 6, the action rod rotates, driving the first base 18 and the second base 19 to move. At the same time, the action rod rotates, driving the rotating plate 12 to rotate through the first adjusting rod 16 and the second adjusting rod 17. The paint spray pipes 274 are respectively connected to the connecting pipes 6. During the process of spraying the material, the substrate is also moving, so the effect of uniform distribution of the paint can be further improved.

[0081] Example 4

[0082] Based on the above embodiments, Figure 7 As shown, a spraying member is provided on the rotating plate 12, and the spraying member includes a coaxially arranged rotating driving member 27 and a fixed plate 26. The rotating plate 12 and the rotating driving member 27 of the spraying member are coaxially connected through a connecting shaft 13. When the rotating plate 12 rotates, the rotating plate 12 drives the rotating driving member 27 to rotate together.

[0083] Spraying parts such as Figure 8 As shown, a plurality of slide grooves 272 are provided on the fixed plate 26, and a slider 273 is provided on each of the slide grooves 272. A paint nozzle 274 is provided on the slider 273. A hinge rod 271 is hingedly connected between the slider 273 and the rotating driving member 27. The rotating driving member 27 rotates through the hinge rod 271 to drive the slider 273 to slide on the slide groove 272.

[0084] When the rotating driving member 27 rotates, the fixed plate 26 does not rotate, and the rotating driving member 27 drives one end of the hinge rod 271 thereon to rotate, and the hinge rod 271 drives the slider 273 at the other end thereof to slide on the slide groove 272, as shown in FIG. Fig. 9 As shown, when the slider 273 slides, it drives the paint nozzle 274 to slide together, and then by adjusting the position of the paint nozzle 274 between the two substrates, the spraying position is adjusted to make the paint distribution more uniform, thereby improving the effect of subsequent processes.

[0085] In this embodiment, four sliding grooves 272 are disposed on the fixing plate 26 .

[0086] The terms "first", "second", "third", etc. used herein are only used to distinguish the corresponding components for the sake of clarity of description, and are not intended to limit any order or emphasize importance, etc. In addition, the term "connected" used herein, unless otherwise specified, may refer to direct connection or indirect connection via other components.

[0087] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rare earth super-hydrophilic optical coating dip coating device, characterized in that: The invention comprises a dipping chamber (2), wherein two static pressure regulating plates (3) are arranged in the dipping chamber (2), a plurality of substrates (4) are arranged between the two static pressure regulating plates (3) in the dipping chamber (2), an ultrasonic atomizing nozzle (5) is arranged on the dipping chamber (2), a connecting pipe (6) is arranged on the ultrasonic atomizing nozzle (5), one end of the connecting pipe (6) is located between the two static pressure regulating plates (3) in the dipping chamber (2); a transmission (10) is connected to the static pressure regulating plate (3), and a stepping motor (11) is connected to the transmission (10).

2. The dip coating device of a rare earth super-hydrophilic optical coating according to claim 1, characterized in that: A plurality of adjusting members are arranged between two static pressure adjusting plates (3) in a dipping chamber (2), and the adjusting members include an action rod, and a first threaded rod (21) and a second threaded rod (22) are arranged at two ends of the action rod respectively; 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 arranged on the first base (18), and one end of the first fixing rod (24) passes through the second base (19); a second fixing rod (20) is arranged on the second base (19), and one end of the second fixing rod (20) passes through the first base (18); when the action rod rotates, the first base (18) and the second base (19) move toward or in opposite directions; and a substrate (4) is connected to both the first base (18) and the second base (19).

3. The dip coating device of a rare earth super-hydrophilic optical coating according to claim 2, characterized in that: A rotating plate (12) is arranged between two first bases (18) of two adjacent adjusting members, a first acting block (25) is connected to a first fixed rod (24), a second acting block (23) is connected to a second fixed rod (20), the first acting block (25) is hingedly connected to one end of a first adjusting rod (16), and the other end of the first adjusting rod (16) is hingedly connected to the rotating plate (12); the second acting block (23) is hingedly connected to one end of a second adjusting rod (17), and the other end of the second adjusting rod (17) is hingedly connected to the rotating plate (12); when the acting rod rotates, the rotating plate (12) is driven to rotate by the second acting block (23) and the first acting block (25), and a spraying member is arranged on the rotating plate (12), and the spraying member includes a plurality of paint spray pipes (274).

4. The dip coating device of a rare earth super-hydrophilic optical coating according to claim 3, characterized in that: The spraying member comprises a coaxially arranged rotating driving member (27) and a fixed plate (26); the rotating driving member (27) is coaxially connected to the rotating plate (12); a plurality of slide grooves (272) are arranged on the fixed plate (26); a slider (273) is arranged on the slide grooves (272); a paint spraying tube (274) is arranged on the slider (273); a hinge rod (271) is hingedly connected between the slider (273) and the rotating driving member (27); the rotating driving member (27) rotates through the hinge rod (271) to drive the slider (273) to slide on the slide groove (272).

5. The dip coating device of a rare earth super-hydrophilic optical coating according to claim 4, characterized in that: At least four slide grooves (272) are arranged on the fixed plate (26).

6. The dip coating device of a rare earth super-hydrophilic optical coating according to claim 3, characterized in that: The paint spray pipes (274) are respectively connected to the connecting pipes (6).

7. A dip coating process for rare earth super-hydrophilic optical coating, characterized in that: The dip coating device comprises any of claims 1 to 6, wherein the dip coating process comprises the following steps: Step 1, spraying a preset delivery amount of coating into the area between two static pressure regulating plates (3) in the dipping chamber (2) through an ultrasonic atomizing nozzle (5); Step 2, adjusting the distance between the two static pressure regulating plates (3) so that the pressure between the two static pressure regulating plates (3) is a first preset pressure; Step 3, at a preset time interval, adjusting the distance between the two static pressure regulating plates (3) so that the pressure between the two static pressure regulating plates (3) gradually increases.

8. The dip coating process of a rare earth super-hydrophilic optical coating according to claim 7, characterized in that: The preset delivery amount of the coating material in step 1 is 60% of the volume of the area between the two static pressure regulating plates (3).

9. The dip coating process of a rare earth super-hydrophilic optical coating according to claim 7, characterized in that: The first preset pressure is 30% of the preset maximum pressure.

10. The dip coating device and process of a rare earth super-hydrophilic optical coating according to claim 1, characterized in that: In step 3, the pressure between the two static pressure regulating plates (3) is increased by 10%-20% of the preset maximum pressure each time, and the preset time interval is not less than 15 minutes.

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