A coating coating device and a method for preparing a hard coating substrate based thereon

Abstract

The present invention discloses a coating coating device and a preparation method of a hard coating substrate based thereon, wherein the coating coating device comprises a spraying mechanism; a heat curing mechanism, which uses an electric heating film glass plate and an exhaust fan to realize rapid curing of the sprayed coating liquid; a feeding mechanism; an ultrasonic dispersion mechanism, which comprises an isolation interlayer fixed to the outside of a storage tank in a sandwich state, an electromagnet fixedly connected to the storage tank according to height, and a plurality of ultrasonic transducers fixedly connected to the storage tank between two adjacent electromagnets; the electromagnet is energized to form adsorption on the corresponding connecting plate, so that the outer end of the connecting plate abuts against the inner wall of the storage tank, and an external ultrasonic generator is started, and the ultrasonic vibration is transmitted to the connecting plate, the elastic connecting component and the mixing plate through the storage tank. The present invention can evenly spray the coating liquid with a transparent hard coating on the surface of uniformly distributed pits onto the substrate, and prepare a substrate with a transparent hard coating on the surface of uniformly distributed pits.

Description

Technical Field

[0001] The present invention relates to a coating coating device and a method for preparing a hard coating substrate based thereon, which can spray a coating liquid having a transparent hard coating on a surface with uniformly distributed pits onto a corresponding substrate, and prepare a substrate having a transparent hard coating on a surface with uniformly distributed pits. Background Art

[0002] The methods currently used to prepare concave-convex structures can be divided into three categories: top-down method, bottom-up method and top-down combined method. The top-down method refers to the preparation of pits downward on a flat substrate, mainly including laser etching, plasma etching, chemical etching and electrochemical etching. The bottom-up method refers to the preparation of protrusions upward on a flat substrate, mainly including chemical vapor deposition, electrochemical deposition, sol-gel method, hydrothermal method, particle method and electrospinning. The top-down combined method refers to first preparing a layer of material different from the substrate on a flat substrate, and then preparing pits from the top to the bottom with the surface of the material as the top, mainly including the template method and the microphase separation method.

[0003] Laser etching uses the high energy of laser to melt or vaporize the material to remove it, thereby forming a pit structure; the template method is to add a template to occupy the space during the molding process of the substrate surface coating, and remove the template that pre-occupies the space after the coating is solidified to prepare the pit structure. The above methods that can prepare regular concave-convex structures all have the disadvantages of being expensive and difficult to prepare large-sized samples.

[0004] The particle method uses organic or inorganic bonding materials to bond nanoparticles to a solid surface to prepare protrusions; the sol-gel method forms a concave-convex structure by drying the sol coated on the substrate surface to form a gel, and then the solvent between the colloidal particles evaporates; the microphase separation method adds two phase precursors to the solution, then solidifies the two phases to separate them, and finally removes one of the phases to prepare pits. However, the current particle method, sol-gel method and microphase separation method also have the disadvantage of being difficult to prepare large-scale regular concave-convex structures.

[0005] Therefore, the research purpose of the present invention is to design a coating device that can spray a coating liquid with a transparent hard coating on a surface with uniformly distributed pits onto a corresponding substrate, and prepare a substrate with a transparent hard coating on a surface with uniformly distributed pits, and a method for preparing a hard-coated substrate based on the coating device. Summary of the invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a coating coating device and a method for preparing a hard coating substrate based thereon, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the present invention is:

[0008] A coating application device, comprising:

[0009] The spraying mechanism comprises a spraying chamber and a material conveying belt passing through the spraying chamber, wherein a corresponding spraying pipe is fixedly connected to the upper front part of the material conveying belt, and a plurality of corresponding atomizing nozzles are installed side by side downwards on the spraying pipe;

[0010] The heat curing mechanism comprises electric heating film glass plates arranged side by side at intervals on the rear side of the material conveyor belt, and corresponding exhaust fans are fixedly installed on the top of the spraying room between two adjacent electric heating film glass plates;

[0011] The feeding mechanism comprises a storage tank, a discharge pipe connected to the spray pipe by a pump is arranged at the bottom of the storage tank, a corresponding sealing cover is fixedly connected to the upper part of the storage tank, a corresponding feeding pipe is fixedly installed on the sealing cover, a mixing shaft is arranged in the storage tank and is connected to the output shaft end of the driving motor on the sealing cover, a plurality of corresponding mixing plates are fixedly connected to the mixing shaft according to the height, and the outer sides of the mixing plates are respectively connected to the corresponding connecting plates through corresponding elastic connecting components to be telescopically connected to the outside.

[0012] The ultrasonic dispersion mechanism comprises an isolation interlayer fixedly connected to the outer side of the storage tank in a sandwich state, a plurality of groups of electromagnets adapted to the connection plate are fixedly connected to the storage tank inside the isolation interlayer according to height, a plurality of corresponding ultrasonic transducers are respectively fixedly connected to the storage tank between two adjacent electromagnets, and the ultrasonic transducers are connected to an external ultrasonic generator; the electromagnet is energized to form adsorption on the connection plate, so that the outer end of the connection plate abuts against the inner wall of the storage tank, the external ultrasonic generator is started, and the ultrasonic vibration is transmitted to the connection plate, the elastic connection component and the mixing plate through the storage tank.

[0013] The connecting plates are respectively longitudinally fixed with corresponding guide pipes, and corresponding guide impellers are rotatably installed in the guide pipes. The impeller shafts of the guide impellers are downwardly extended and fixed with corresponding transmission gears, and the inner side walls of the storage tanks are respectively fixed with driving racks matched with the transmission gears; after the electromagnet is energized to form adsorption on the connecting plates, the transmission gear on the impeller shaft is meshed and connected to the corresponding driving rack, the driving motor drives the mixing shaft to rotate, and the transmission gear rotates around the driving rack to drive the guide impeller to rotate.

[0014] A group of corresponding guide sleeves are fixedly connected to the outer sides of the mixing plates according to their heights. The connecting plates are telescopically installed in the guide sleeves through corresponding guide shafts. The elastic connecting components include a coil spring fixedly connected between the guide shafts and the guide sleeves.

[0015] The electrothermal film glass plate comprises a glass substrate fixedly installed in the spray chamber by a corresponding bracket, the glass substrate comprises a horizontal portion, and inclined portions arranged upwardly at both sides of the horizontal portion, the top surfaces of the horizontal portion and the inclined portions are respectively sprayed with corresponding semiconductor electrothermal films, and the two sides of the semiconductor electrothermal film sprayed on the glass substrate are respectively connected to corresponding electrodes, and the electrodes are respectively connected to an external power supply through corresponding electrical controllers.

[0016] Corresponding isolation plates are respectively installed on both sides and the upper part of the glass substrate.

[0017] A method for preparing a hard coating substrate based on the coating coating device described above comprises the following specific steps:

[0018] S1, weighing a hydrolyzable silane compound and a solvent, putting them into a storage tank of the coating coating equipment, and uniformly mixing them by ultrasonic dispersion and stirring to obtain a mixed solution A;

[0019] S2, adding deionized water and a catalyst to the mixed solution A, and continuously stirring after ultrasonic dispersion to obtain a mixed solution B containing a hydrolyzed silane compound hydrolyzate and a solvent;

[0020] S3, adding a water-insoluble phase separation additive and a drying control chemical additive to the mixed solution B, and uniformly mixing them by ultrasonic dispersion and stirring, and filtering to obtain a coating solution C for preparing a transparent hard coating having uniformly distributed pits on the surface;

[0021] S4, loading the corresponding substrate plate material to the feeding end of the material conveyor belt of the spraying mechanism of the coating coating equipment by a robot or manually;

[0022] S5, the substrate plate is transported through the bottom side of the atomizing nozzle, and the coating liquid C is pumped to the atomizing nozzle to be sprayed on the substrate plate;

[0023] S6, the substrate plate coated with the coating liquid C is heated and cured by a thermal curing mechanism.

[0024] The step S6 further includes a step S7, wherein the cured coating is calcined, and after cooling, a hard coating substrate is obtained with a transparent hard coating having a surface with evenly distributed pits.

[0025] The hydrolyzable silane compound in step S1 comprises a silane coupling agent and at least one selected from methyl orthosilicate, ethyl orthosilicate, trimethoxysilane and triethoxysilane; the silane coupling agent is selected from at least one epoxy silane coupling agent; the solvent is a mixed solvent, and the mixed solvent contains at least one low-grade alcohol; the catalyst is selected from at least one selected from nitric acid, hydrochloric acid and acetic acid.

[0026] The pH value of the mixed solution B in step S2 is 4-6; the heating and curing treatment temperature in step S6 is 80°C-200°C.

[0027] The water-insoluble phase-separation additive in step S3 is selected from at least one of polymer materials that are insoluble in water but soluble in alcohol; the drying control chemical additive includes formamide; the ratio of the volume of the hydrolysis condensate of the hydrolyzable silane compound in the coating liquid C to the volume of the water-insoluble phase-separation additive is 1:5 to 10:1.

[0028] Advantages of the present invention:

[0029] 1) In the process of preparing the storage material of the present invention, ultrasonic dispersion and conventional stirring can be switched according to processing needs. When ultrasonic dispersion needs to be started, it is only necessary to start the external ultrasonic generator and energize the electromagnet to form adsorption on the connecting plate, so that the outer end of the connecting plate abuts against the inner wall of the storage tank, and the ultrasonic vibration can be transmitted to the connecting plate, the elastic connecting component and the mixing plate through the storage tank, thereby ensuring the effect of ultrasonic dispersion; and during conventional stirring, the external ultrasonic generator is turned off and the electromagnet is powered off to ensure the smooth progress of the conventional stirring process. Therefore, according to the processing requirements of the coating liquid, the processing modes of conventional stirring and ultrasonic dispersion can be switched in real time.

[0030] 2) The present invention adds a heat curing mechanism to the rear side of the material conveyor belt of the spraying mechanism to ensure that the coating liquid after spraying can be quickly cured. To ensure the curing efficiency, the present invention further arranges the electric heating film glass plate of the heat curing mechanism into a horizontal portion and inclined portions arranged upward on both sides of the horizontal portion. The far-infrared waves projected by the inclined portions form heat radiation to the position where the electric heating film glass plate is not arranged, thereby effectively improving the curing rate of the coating liquid.

[0031] 3) The present invention also longitudinally fixes a guide tube on the connecting plate, and a guide impeller is rotatably installed in the guide tube, and the impeller shaft of the guide impeller extends downward and is fixed with a corresponding transmission gear. The transmission gear is driven by the drive rack fixed in the storage tank, so that the guide impeller can be driven to rotate during the ultrasonic dispersion process. Therefore, during the ultrasonic dispersion process, the material is pumped up and down by axial flow, so as to further enhance the contact rate between the material and the ultrasonic vibration source during the ultrasonic dispersion process, thereby effectively improving the practical effect of the present invention.

[0032] 4) The present invention adds a water-insoluble phase separation additive to the hydrolysis condensate of the hydrolyzable silane compound, and utilizes the water-insoluble property of the phase separation additive to cause the phase separation additive to be emulsified to form tiny droplets as the low-boiling point organic solvent evaporates during the curing process of the coating liquid, and then undergo microphase separation from the colloidal silica formed by the hydrolysis condensate of the hydrolyzable silane compound, and form microspheres after curing and are uniformly embedded in the surface of the colloidal silica, and then the microspheres formed by the phase separation additive are removed by calcination to obtain uniformly distributed pits, thereby preparing a substrate with a transparent hard coating on the surface with uniformly distributed pits.

[0033] 5) The hardness of the hard coating substrate prepared by the preparation method of the present invention is 9H when measured by a pencil hardness test method, and the adhesion is level 0 when measured by a grid knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention.

[0035] Figure 2 It is a cross-sectional view of the present invention.

[0036] Figure 3 It is a structural schematic diagram of the spraying mechanism of the present invention.

[0037] Figure 4 It is a schematic structural diagram of the electric heating film glass plate of the present invention.

[0038] Figure 5 It is a structural schematic diagram of a guide impeller provided on the connecting plate.

[0039] Figure 6 It is a cross-sectional view of a guide impeller provided on the connecting plate.

[0040] Figure 7 This is a SEM photograph of the sample prepared in Example 2 of the present invention.

[0041] In the accompanying drawings: spraying mechanism 1, spraying chamber 101, material conveyor belt 102, spray pipe 103, atomizing nozzle 104, heat curing mechanism 2, electric heating film glass plate 201, glass substrate 2011, horizontal part 20111, inclined part 20112, semiconductor electric heating film 2012, electrode 2013, exhaust fan 202, feeding mechanism 3, storage tank 301, discharge pipe 302, cover 303, feed pipe 304, drive motor 4, mixing shaft 5, mixing plate 6, elastic connection component 7, connection plate 8, ultrasonic dispersion mechanism 9, isolation interlayer 901, electromagnet 902, ultrasonic transducer 903, guide pipe 10, guide impeller 11, impeller shaft 12, transmission gear 13, drive rack 14, guide sleeve 15, guide shaft 16, bracket 17, isolation plate 18. DETAILED DESCRIPTION

[0042] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings:

[0043] Embodiment 1:

[0044] refer to Figure 1-6 , a coating application device, comprising:

[0045] The spraying mechanism 1 comprises a spraying chamber 101 and a material conveying belt 102 passing through the spraying chamber 101, a corresponding spraying pipe 103 is fixedly connected to the upper front side of the material conveying belt 102, and a plurality of corresponding atomizing nozzles 104 are installed side by side downward on the spraying pipe 103;

[0046] The heat curing mechanism 2 comprises electric heating film glass plates 201 arranged side by side at intervals on the rear side of the material conveying belt 102, and corresponding exhaust fans 202 are fixedly installed on the top of the spraying chamber 101 between two adjacent electric heating film glass plates 201;

[0047] The feeding mechanism 3 comprises a storage tank 301, a discharge pipe 302 connected to the injection pipe 103 by a pump is arranged at the bottom of the storage tank 301, a corresponding sealing cover 303 is fixedly connected to the upper part of the storage tank 301, a corresponding feed pipe 304 is fixedly installed on the sealing cover 303, a mixing shaft 5 is arranged in the storage tank 301 and is connected to the output shaft end of the driving motor 4 on the sealing cover 303, a plurality of corresponding mixing plates 6 are fixedly connected to the mixing shaft 5 according to the height, and the outer sides of the mixing plates 6 are respectively connected to the corresponding connecting plates 8 through corresponding elastic connecting components 7 to be telescopically connected outwards;

[0048] The ultrasonic dispersion mechanism 9 comprises an isolation interlayer 901 fixedly connected to the outer side of the storage tank 301 in a sandwich state, and a plurality of groups of electromagnets 902 adapted to the connecting plate 8 are fixedly connected to the storage tank 301 inside the isolation interlayer 901 according to height, and a plurality of corresponding ultrasonic transducers 903 are fixedly connected to the storage tank 301 between two adjacent electromagnets 902, and the ultrasonic transducers 903 are connected to an external ultrasonic generator; the electromagnet 902 is energized to form adsorption on the connecting plate 8, so that the outer end of the connecting plate 8 abuts against the inner wall of the storage tank 301, and the external ultrasonic generator is started, and the ultrasonic vibration is transmitted to the connecting plate 8, the elastic connecting component 7 and the mixing plate 6 through the storage tank 301.

[0049] In the material storage preparation process of the present invention, ultrasonic dispersion and conventional stirring can be switched according to processing needs. When ultrasonic dispersion needs to be started, it is only necessary to start the external ultrasonic generator and energize the electromagnet 902 to form adsorption on the connection plate 8, so that the outer end of the connection plate 8 abuts against the inner wall of the storage tank 301, and the ultrasonic vibration can be transmitted to the connection plate 8, the elastic connection component 7 and the mixing plate 6 through the storage tank 301, so as to ensure the effect of ultrasonic dispersion; and in the conventional stirring process, the external ultrasonic generator is turned off and the electromagnet 902 is powered off to ensure the smooth progress of the conventional stirring process. Therefore, according to the processing requirements of the coating liquid, the processing mode of conventional stirring and ultrasonic dispersion can be switched in real time.

[0050] The connecting plate 8 is respectively longitudinally fixed with a corresponding guide tube 10, and a corresponding guide impeller 11 is rotatably installed in the guide tube 10. The impeller shaft 12 of the guide impeller 11 extends downward and is fixed with a corresponding transmission gear 13, and the inner side wall of the storage tank 301 is respectively fixed with a driving rack 14 adapted to the transmission gear 13; after the electromagnet 902 is energized to form adsorption on the connecting plate 8, the transmission gear 13 on the impeller shaft 12 is meshed and connected to the corresponding driving rack 14, and the driving motor 4 drives the mixing shaft 5 to rotate, and the transmission gear 13 rotates around the driving rack 14 to drive the guide impeller 11 to rotate.

[0051] The guide pipe 10 is fixedly connected longitudinally to the connecting plate 8, and the guide impeller 11 is rotatably installed in the guide pipe 10. The impeller shaft 12 of the guide impeller 11 extends downward and is fixedly connected to the corresponding transmission gear 13. The transmission gear 13 is driven by the drive rack 14 fixedly connected to the storage tank 301, so that the guide impeller 11 can be driven to rotate during the ultrasonic dispersion process. Therefore, during the ultrasonic dispersion process, the material is pumped up and down by axial flow, so as to further enhance the contact rate between the material and the ultrasonic vibration source during the ultrasonic dispersion process, thereby effectively improving the practical effect of the present invention.

[0052] A set of corresponding guide sleeves 15 are fixedly connected to the outer side of the mixing plate 6 according to the height. The connecting plate 8 is telescopically installed in the guide sleeve 15 through the corresponding guide shaft 16. The elastic connecting component 7 includes a coil spring fixed between the guide shaft 16 and the guide sleeve 15.

[0053] The electrothermal film glass plate 201 comprises a glass substrate 2011 fixedly installed in the spray chamber 101 by a corresponding bracket 17, the glass substrate 2011 comprises a horizontal portion 20111, and inclined portions 20112 arranged upwardly at both sides of the horizontal portion 20111, the top surfaces of the horizontal portion 20111 and the inclined portions 20112 are respectively sprayed with corresponding semiconductor electrothermal films 2012, and both sides of the semiconductor electrothermal films 2012 sprayed on the glass substrate 2011 are respectively connected with corresponding electrodes 2013, and the electrodes 2013 are respectively connected to an external power supply through corresponding electrical controllers. The two sides and the upper part of the glass substrate 2011 are respectively sealed with corresponding isolation plates 18.

[0054] The present invention further provides a heat curing mechanism 2 on the rear side of the material conveying belt 102 of the spraying mechanism 1 to ensure that the coating liquid after spraying can be quickly cured. To ensure the curing efficiency, the present invention further configures the electric heating film glass plate 201 of the heat curing mechanism 2 into a horizontal portion 20111 and inclined portions 20112 inclined upward on both sides of the horizontal portion 20111. The far-infrared waves projected by the inclined portions 20112 form heat radiation to the position where the electric heating film glass plate 201 is not provided, thereby effectively improving the curing rate of the coating liquid.

[0055] Embodiment 2:

[0056] A method for preparing a hard coating substrate based on the coating coating device described in the first embodiment comprises the following specific steps:

[0057] S1, weighing a hydrolyzable silane compound and a solvent, putting them into the storage tank 301 of the coating coating equipment, and uniformly mixing them by ultrasonic dispersion and stirring to obtain a mixed solution A;

[0058] S2, adding deionized water and a catalyst to the mixed solution A, and continuously stirring after ultrasonic dispersion to obtain a mixed solution B containing a hydrolyzed silane compound hydrolyzate and a solvent;

[0059] S3, adding a water-insoluble phase separation additive and a drying control chemical additive to the mixed solution B, and uniformly mixing them by ultrasonic dispersion and stirring, and filtering to obtain a coating solution C for preparing a transparent hard coating having uniformly distributed pits on the surface;

[0060] S4, loading the corresponding substrate plate material to the feeding end of the material conveyor belt 102 of the spraying mechanism (1) of the coating coating equipment by a robot or manually;

[0061] S5, the substrate plate is transported through the bottom side of the atomizing nozzle 104, and the coating liquid C is pumped to the atomizing nozzle 104 to be sprayed on the substrate plate;

[0062] S6, the substrate plate coated with the coating liquid C is heated and cured by the thermal curing mechanism 2.

[0063] The step S6 further includes a step S7, wherein the cured coating is calcined, and after cooling, a hard coating substrate is obtained with a transparent hard coating having a surface with evenly distributed pits.

[0064] The hydrolyzable silane compound in step S1 comprises a silane coupling agent and is selected from tetraethyl orthosilicate; the silane coupling agent is selected from 3-(2,3-epoxypropoxy)propyltriethoxysilane; the solvent is a mixed solvent, and the mixed solvent contains at least methanol; the catalyst is selected from hydrochloric acid.

[0065] The pH value of the mixed solution B in step S2 is 4-6; the heating and curing treatment temperature in step S6 is 130°C.

[0066] The water-insoluble phase-separation additive in step S3 is selected from one of the polymer materials that are insoluble in water but soluble in alcohol, specifically an oily epoxy resin; the drying control chemical additive includes formamide; the ratio of the volume of the hydrolysis condensate of the hydrolyzable silane compound in the coating liquid C to the volume of the water-insoluble phase-separation additive is 1:7.5:1.

[0067] The present invention adds a water-insoluble phase separation additive to the hydrolysis condensate of a hydrolyzable silane compound, and utilizes the water-insoluble property of the phase separation additive to cause the phase separation additive to be emulsified to form tiny droplets as the low-boiling point organic solvent evaporates during the curing process of the coating liquid, and then undergo microphase separation with colloidal silicon oxide formed by the hydrolysis condensate of the hydrolyzable silane compound, and form microspheres after curing and are uniformly embedded on the surface of the colloidal silicon oxide, and then the microspheres formed by the phase separation additive are removed by calcination to obtain uniformly distributed pits, thereby preparing a substrate with a transparent hard coating on the surface of the uniformly distributed pits.

[0068] The SEM photo of the sample prepared in Example 2 of the present invention is as follows: Figure 7 As shown, the hardness of the hard coating substrate prepared by the preparation method of the present invention is 9H when measured by a pencil hardness test method, and the adhesion is level 0 when measured by a grid knife.

[0069] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A coating coating device, characterized in that: include: A spraying mechanism (1) comprises a spraying chamber (101) and a material conveying belt (102) passing through the spraying chamber (101), a corresponding spraying pipe (103) being fixedly connected to the upper front portion of the material conveying belt (102), and a plurality of corresponding atomizing nozzles (104) being installed side by side downwardly on the spraying pipe (103); The heat curing mechanism (2) comprises electric heating film glass plates (201) arranged side by side at intervals on the rear side of the material conveyor belt (102), and corresponding exhaust fans (202) are fixedly installed on the top of the spray chamber (101) between two adjacent electric heating film glass plates (201); The feeding mechanism (3) comprises a material storage tank (301), the bottom of the material storage tank (301) is provided with a discharge pipe (302) connected to the injection pipe (103) by a pump, the upper part of the material storage tank (301) is fixedly connected with a corresponding sealing cover (303), the sealing cover (303) is fixedly mounted with a corresponding feeding pipe (304), the material storage tank (301) is provided with a mixing shaft (5) at the output shaft end of a driving motor (4) connected to the sealing cover (303), the mixing shaft (5) is fixedly connected with a plurality of corresponding mixing plates (6) at different heights, and the outer sides of the mixing plates (6) are respectively connected to corresponding connecting plates (8) through corresponding elastic connecting components (7) so as to be telescopically connected outwards; The ultrasonic dispersion mechanism (9) comprises an isolation interlayer (901) fixedly connected to the outside of the storage tank (301) in a sandwich state, a plurality of groups of electromagnets (902) adapted to the connection plate (8) are fixedly connected to the storage tank (301) inside the isolation interlayer (901) in accordance with height, a plurality of corresponding ultrasonic transducers (903) are fixedly connected to the storage tank (301) between two adjacent electromagnets (902), and the ultrasonic transducers (903) are connected to an external ultrasonic generator; the electromagnet (902) is energized to form adsorption on the connection plate (8), so that the outer end of the connection plate (8) abuts against the inner wall of the storage tank (301), the external ultrasonic generator is started, and the ultrasonic vibration is transmitted to the connection plate (8), the elastic connection component (7) and the mixing plate (6) through the storage tank (301); The connecting plates (8) are respectively longitudinally fixedly connected with corresponding guide pipes (10), and corresponding guide impellers (11) are rotatably mounted in the guide pipes (10). The impeller shafts (12) of the guide impellers (11) are extended downwardly and fixedly connected with corresponding transmission gears (13), and the inner side walls of the storage tanks (301) are respectively fixedly connected with drive racks (14) adapted to the transmission gears (13); after the electromagnets (902) are energized to form adsorption on the connecting plates (8), the transmission gears (13) on the impeller shafts (12) are meshedly connected to the corresponding drive racks (14), and the drive motor (4) drives the mixing shaft (5) to rotate, and the transmission gears (13) rotate around the drive racks (14) to drive the guide impellers (11) to rotate.

2. A coating application device according to claim 1, characterized in that: A group of corresponding guide sleeves (15) are fixedly connected to the outer sides of the mixing plates (6) at different heights, the connecting plates (8) are telescopically mounted in the guide sleeves (15) via corresponding guide shafts (16), and the elastic connecting assembly (7) comprises a coil spring fixedly connected between the guide shafts (16) and the guide sleeves (15).

3. A coating application device according to claim 1, characterized in that: The electric heating film glass plate (201) comprises a glass substrate (2011) fixedly mounted in the spray chamber (101) via a corresponding bracket (17); the glass substrate (2011) comprises a horizontal portion (20111) and inclined portions (20112) arranged upwardly at both sides of the horizontal portion (20111); the top surfaces of the horizontal portion (20111) and the inclined portions (20112) are respectively sprayed with corresponding semiconductor electric heating films (2012); both sides of the semiconductor electric heating film (2012) sprayed on the glass substrate (2011) are respectively connected to corresponding electrodes (2013); and the electrodes (2013) are respectively connected to an external power supply via corresponding electrical controllers.

4. A coating application device according to claim 3, characterized in that: Corresponding isolation plates (18) are respectively installed and sealed on both sides and the upper part of the glass substrate (2011).

5. A method for preparing a hard coating substrate based on the coating coating equipment according to any one of claims 1 to 4, characterized in that: The following specific steps are included: S1, weighing a hydrolyzable silane compound and a solvent, putting them into a storage tank (301) of the coating coating equipment, and uniformly mixing them by ultrasonic dispersion and stirring to obtain a mixed solution A; S2, adding deionized water and a catalyst to the mixed solution A, and continuously stirring after ultrasonic dispersion to obtain a mixed solution B containing a hydrolyzed silane compound hydrolyzate and a solvent; S3, adding a water-insoluble phase separation additive and a drying control chemical additive to the mixed solution B, and uniformly mixing them by ultrasonic dispersion and stirring, and filtering to obtain a coating solution C for preparing a transparent hard coating having uniformly distributed pits on the surface; S4, loading the corresponding substrate plate material to the feeding end of the material conveyor belt (102) of the spraying mechanism (1) of the coating coating equipment by a robot or manually; S5, the substrate plate is transported through the bottom side of the atomizing nozzle (104), and the coating liquid C is pumped to the atomizing nozzle (104) to be sprayed on the substrate plate; S6, the substrate plate coated with the coating liquid C is subjected to a heat curing treatment by a heat curing mechanism (2).

6. The method for preparing a hard coating substrate according to claim 5, characterized in that: The step S6 also includes a step S7, in which the solidified coating is calcined, and after cooling, a hard coating substrate is obtained with a transparent hard coating having a surface with evenly distributed pits.

7. The method for preparing a hard coating substrate according to claim 6, characterized in that: The hydrolyzable silane compound in step S1 comprises a silane coupling agent and at least one selected from methyl orthosilicate, ethyl orthosilicate, trimethoxysilane and triethoxysilane; the silane coupling agent is selected from at least one epoxy silane coupling agent; the solvent is a mixed solvent, and the mixed solvent contains at least one low-grade alcohol; the catalyst is selected from at least one selected from nitric acid, hydrochloric acid and acetic acid.

8. The method for preparing a hard coating substrate according to claim 7, characterized in that: The pH value of the mixed solution B in step S2 is 4-6; the heating and curing treatment temperature in step S6 is 80°C-200°C.

9. The method for preparing a hard coating substrate according to claim 8, characterized in that: The water-insoluble phase-separation additive in step S3 is selected from at least one of polymer materials that are insoluble in water but soluble in alcohol; the drying control chemical additive includes formamide; the ratio of the volume of the hydrolysis condensate of the hydrolyzable silane compound in the coating liquid C to the volume of the water-insoluble phase-separation additive is 1:5 to 10:1.

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