A high-gain, large-scattering-angle metal screen coating and preparation method thereof

Abstract

The present invention discloses a high-gain and large-scattering-angle metal screen coating and a preparation method thereof, comprising a screen coating, the screen coating being provided with a plurality of sound-transmitting holes, the screen coating comprising a wear-resistant layer, a protective layer, a flexible stretch film, a metal layer, a protective transition layer, a screen substrate layer and an anti-vibration layer arranged in sequence from top to bottom. The present invention is a metal screen coating with good sound transmission effect, high overall strength, good wear resistance, strong anti-amplitude capability and good imaging effect.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of metal screens, and specifically relates to a high-gain and large-scattering-angle metal screen coating and a preparation method thereof. Background Art

[0002] The metal screen is a new type of screen with high gain, wide viewing angle, good contrast, good color reproduction, and green environmental protection.

[0003] According to the patent document with application number CN201720567349.2, a 3D metal movie screen is provided, which includes a textile layer, an acrylic resin layer, a nano aluminum silver layer, a nano silicon dioxide light scattering layer and a protective layer; an acrylic resin layer is arranged on the textile layer, a nano aluminum silver layer is arranged on the acrylic resin layer, a nano silicon dioxide light scattering layer is arranged on the nano aluminum silver layer, and a protective layer is arranged on the nano silicon dioxide light scattering layer. By using nano-scale materials as coatings, this product overcomes the problem that the effective scattering angle of the metal screen cannot reach more than 60°, and also solves the problem that the audience area in the middle of the seats is bright while the audience area on the sides is dark during the previous movie screening, thus improving the viewing effect of the 3D metal movie screen.

[0004] The product in the above patent overcomes the problem that the effective scattering angle of the metal screen cannot reach more than 60° by using nano-scale materials as coatings. However, the sound transmission effect of the metal screen is poor, and its overall strength is low, its wear resistance is poor, and its ability to resist amplitude is weak. Summary of the invention

[0005] The present invention mainly provides a high-gain and large-scattering-angle metal screen coating and a preparation method thereof, so as to solve the technical problems raised in the above-mentioned background technology.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A high-gain and large-scattering-angle metal screen coating comprises a screen coating, on which a plurality of sound-transmitting holes are arranged. The screen coating comprises a wear-resistant layer, a protective layer, a flexible stretch film, a metal layer, a protective transition layer, a screen substrate layer and an anti-vibration layer which are sequentially arranged from top to bottom.

[0008] Preferably, the bottom of the screen substrate layer is hot-pressed to form an anti-vibration layer, the top of the screen substrate layer is coated with a protective transition layer, the screen substrate layer is polyvinyl chloride, the anti-vibration layer is polyurethane elastomer, and the protective transition layer is a mixture of acrylic resin and polyvinyl chloride. In this preferred embodiment, the anti-vibration layer is polyurethane elastomer, which is convenient for absorbing sound waves that have not passed through the sound-permeable holes and reducing the vibration of the screen, the screen substrate layer is polyvinyl chloride, which is convenient for giving the screen high strength, and the protective transition layer is a mixture of acrylic resin and polyvinyl chloride, which is convenient for increasing the strength of the screen and facilitating the attachment of the metal layer.

[0009] Preferably, the metal layer is sprayed on the top of the protective transition layer, and the metal layer includes film-forming resin, pigment, light diffuser, curing agent, filler, defoamer, antioxidant, diluent, and leveling agent; the film-forming resin is acrylic resin, the pigment is nano aluminum silver paste, and the light diffuser is nano silicon dioxide. In this preferred embodiment, the metal layer facilitates high-gain imaging, reduces interference light waves, and eliminates the foggy feeling of blurred images on traditional projection screens.

[0010] Preferably, the curing agent is isocyanate, the filler is ultrafine calcium carbonate, the defoamer is methyl silicone oil, the antioxidant is potassium carbonate, the diluent is a mixture of butyl acetate, ethyl acetate and ethylene glycol ethyl ether acetate, and the leveling agent is cellulose acetate butyrate. In this preferred embodiment, the above materials are used to facilitate the preparation of the metal layer.

[0011] Preferably, the flexible stretch film is bonded to the metal layer, the flexible stretch film is a mixture of nano zinc oxide, nano graphene and nano gold, the protective layer is coated on the surface of the flexible stretch film, the protective layer is acrylic resin, the wear-resistant layer is sprayed on the surface of the protective layer, and the wear-resistant layer is a mixture of epoxy resin, silane coupling agent and aluminum oxide. In this preferred embodiment, the flexible stretch film is used to increase the flexibility and ductility of the screen, the protective layer is used to provide safety protection for the screen surface to prevent the flexible stretch film from being damaged, and the wear-resistant layer is used to increase the wear resistance of the screen surface.

[0012] According to the above technical solution of a high-gain and large-scattering-angle metal screen coating, a method for preparing a high-gain and large-scattering-angle metal screen coating is also provided, comprising the following steps:

[0013] In the first step, a punching device is used to punch holes in the screen substrate layer to generate screen 1; a hot press molding machine is used to hot press the polyurethane elastomer on the bottom of the screen substrate layer to generate screen 2;

[0014] In the second step, a mixture of acrylic resin and polyvinyl chloride is sprayed on the second screen by a spraying device, and after drying, a third screen is generated. A mixture of film-forming resin, pigment, light diffuser, curing agent, filler, defoamer, antioxidant, diluent and leveling agent is sprayed on the third screen by a spraying device, and after drying, a fourth screen is obtained. The flexible stretch film is bonded to the fourth screen to obtain a fifth screen.

[0015] In the third step, acrylic resin is sprayed on the screen five using a spraying device, and after drying, the screen six is ​​obtained. Then, a mixed liquid of epoxy resin, silane coupling agent and aluminum oxide is sprayed on the screen six, and after drying, a finished metal screen is obtained.

[0016] Preferably, the punching device includes a working platform, and a top plate connected to the upper surface of the working platform through a supporting column, a screen punching spreading box arranged on the working platform, screen traction components symmetrically arranged on both sides of the screen punching spreading box, a plurality of lifting punching components arranged in a linear array on the inner wall of the screen punching spreading box, a first movable component and a second movable component arranged at the bottom of the top plate, the first movable component is provided with an auxiliary pressure punching box at the execution end, the second movable component is connected to a spraying device at the execution end, a plurality of linearly distributed auxiliary pressure holes are provided at the bottom of the auxiliary pressure punching box, a flow channel connecting the plurality of auxiliary pressure holes is provided in the auxiliary pressure punching box, and the flow channel pipeline is connected to a negative pressure pump arranged on the top plate. In this preferred embodiment, the punching device facilitates the punching of sound-transmitting holes on the screen, the spraying device facilitates the uniform spraying of raw materials, and the auxiliary pressure punching box facilitates the auxiliary pressure punching and the recovery of raw materials attached to the punching device.

[0017] Preferably, the screen pulling component includes a first linear guide rail provided on the side wall of the screen punching and spreading box, a first telescopic cylinder provided on the execution end of the first linear guide rail, a pad provided on the execution end of the first telescopic cylinder, a pressure plate provided on the upper part of the pad, and a second telescopic cylinder provided on the upper surface of the pressure plate and having an execution end that penetrates through the pressure plate and connects to the upper surface of the pad. In this preferred embodiment, the screen pulling component facilitates the spreading of the screen on the screen punching and spreading box.

[0018] Preferably, the lifting and punching components symmetrically include a hydraulic cylinder disposed on the inner wall of the screen punching and spreading box, a support plate disposed on the execution end of the hydraulic cylinder, and a plurality of punching heads disposed in a linear array on the support plate. In this preferred embodiment, the lifting and punching components in a plurality of linear arrays facilitate batch punching and ensure the flatness of the screen for subsequent spraying.

[0019] Preferably, the second moving component includes a second linear guide symmetrically arranged at the bottom of the top plate, a fixed plate arranged at the execution end of the second linear guide, a lifting plate arranged at the bottom of the fixed plate, and a cylinder symmetrically arranged at both ends of the bottom surface of the lifting plate and the execution end passes through the lifting plate and connects to the bottom of the fixed plate. The second moving component has the same structure as the first moving component, and the spraying device includes a transmission pipe arranged at the bottom of the lifting plate, a plurality of nozzles arranged at the bottom of the transmission pipe, and a feed pipe connected to the transmission pipe. In this preferred embodiment, the second moving component facilitates the stable movement of the spraying device.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The anti-vibration layer in the metal screen coating of the present invention is a polyurethane elastomer, which is convenient for absorbing sound waves that have not passed through the sound-permeable holes and reducing the vibration of the screen. The screen substrate layer is polyvinyl chloride, which is convenient for giving the screen high strength. The protective transition layer is a mixture of acrylic resin and polyvinyl chloride, which is convenient for increasing the strength of the screen and facilitating the attachment of the metal layer. The metal layer is convenient for high-gain imaging, which is convenient for reducing interfering light waves and eliminating the foggy feeling of blurred images on traditional projection screens. The flexible stretch film is convenient for increasing the flexibility and ductility of the screen. The protective layer is convenient for providing safety protection for the screen surface to prevent the flexible stretch film from being damaged. The wear-resistant layer increases the wear resistance of the screen surface.

[0022] In the preparation method of the metal screen coating, the screen traction component is used to facilitate spreading the screen on the screen punching and spreading box, the punching device is used to facilitate punching sound-transmitting holes on the screen, and multiple linear array lifting and punching components are used to facilitate batch punching and maintain the flatness of the screen for subsequent spraying. The second moving component facilitates stable movement of the spraying device, the spraying device facilitates uniform spraying of the raw materials, and the auxiliary pressure punching box facilitates auxiliary pressure drilling and recovery of the raw materials attached to the punching device.

[0023] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric diagram of the screen coating structure of the present invention;

[0025] Figure 2 This is a cross-sectional view of the screen coating structure of the present invention.

[0026] Figure 3 It is an axonometric diagram of the punching device structure of the present invention;

[0027] Figure 4 It is an exploded view of the punching device structure of the present invention;

[0028] Figure 5It is an axonometric view of the spraying device structure of the present invention;

[0029] Figure 6 It is a side view of the punching device and the spraying device structure of the present invention;

[0030] Figure 7 It is a cross-sectional view of the structure of the spraying device of the present invention;

[0031] Figure 8 It is a cross-sectional view of the lifting and punching component structure of the present invention.

[0032] Description of the drawings: 10, screen coating; 101, sound-permeable hole; 11, protective layer; 12, flexible stretch film; 13, metal layer; 14, protective transition layer; 15, screen substrate layer; 16, anti-seismic layer; 17, wear-resistant layer; 20, punching device; 21, working platform; 22, top plate; 23, screen punching and spreading box; 24, screen traction component; 241, first linear guide rail; 242, first telescopic cylinder; 243, pad; 244, pressure plate; 2 45. Second telescopic cylinder; 25. Lifting and punching component; 251. Hydraulic cylinder; 252. Support plate; 253. Punching head; 26. First moving component; 27. Second moving component; 271. Second linear guide rail; 272. Fixed plate; 273. Lifting plate; 274. Cylinder; 28. Auxiliary pressure punching box; 281. Auxiliary pressure hole; 282. Flow channel; 29. ​​Negative pressure pump; 30. Spraying device; 31. Transmission pipe; 32. Nozzle; 33. Feed pipe. DETAILED DESCRIPTION

[0033] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] Please refer to the attached Figure 1 , 2 As shown, in a preferred embodiment of the present invention, a high-gain and large-scattering-angle metal screen coating comprises a screen coating 10, wherein the screen coating 10 is provided with a plurality of sound-permeable holes 101, wherein the screen coating 10 comprises a wear-resistant layer 17, a protective layer 11, a flexible stretch film 12, a metal layer 13, a protective transition layer 14, a screen substrate layer 15 and a shock-resistant layer 16 which are arranged in order from top to bottom, wherein the shock-resistant layer 16 is hot-pressed at the bottom of the screen substrate layer 15, and the protective transition layer 14 is coated on the top of the screen substrate layer 15, wherein the screen substrate layer 15 is polyvinyl chloride, the shock-resistant layer 16 is a polyurethane elastomer, and the protective transition layer 14 is a mixture of acrylic resin and polyvinyl chloride.

[0037] It should be noted that, in this embodiment, sound waves pass through the screen coating 10 through the sound-permeable holes 101, so that the sound of the speakers behind the screen can be transmitted to the front of the metal screen. The shock-resistant layer 16 is a polyurethane elastomer, which is convenient for absorbing sound waves that have not passed through the sound-permeable holes 101 and reducing the vibration of the screen. The screen substrate layer 15 is polyvinyl chloride, which is convenient for giving the screen high strength. The protective transition layer 14 is a mixture of acrylic resin and polyvinyl chloride, which is convenient for increasing the strength of the screen while facilitating the adhesion of the metal layer 13.

[0038] Please refer to the attached Figure 1 , 2 As shown, in another preferred embodiment of the present invention, the metal layer 13 is sprayed on the top of the protective transition layer 14, and the metal layer 13 includes a film-forming resin, a pigment, a light diffuser, a curing agent, a filler, a defoaming agent, an antioxidant, a diluent, and a leveling agent; the film-forming resin is an acrylic resin, the pigment is nano-aluminum silver paste, the light diffuser is nano-silicon dioxide, the curing agent is isocyanate, the filler is ultrafine calcium carbonate, the defoaming agent is methyl silicone oil, the antioxidant is potassium carbonate, the diluent is a mixture of butyl acetate, ethyl acetate and ethylene glycol ethyl ether acetate, and the leveling agent is cellulose acetate butyrate.

[0039] It should be noted that, in this embodiment, the metal layer 13 facilitates high-gain imaging, reduces interference light waves, and eliminates the foggy feeling of blurred images on traditional projection screens.

[0040] Please refer to the attached Figure 1 , 2As shown, in another preferred embodiment of the present invention, the flexible stretch film 12 is bonded to the metal layer 13, the flexible stretch film 12 is a mixture of nano zinc oxide, nano graphene and nano gold, the protective layer 11 is coated on the surface of the flexible stretch film 12, the protective layer 11 is acrylic resin, and the wear-resistant layer 17 is sprayed on the surface of the protective layer 11, and the wear-resistant layer 17 is a mixture of epoxy resin, silane coupling agent and aluminum oxide.

[0041] It should be noted that, in this embodiment, the flexible stretch film 12 is used to increase the flexibility and ductility of the screen, the protective layer 11 is used to provide safety protection for the screen surface to prevent the flexible stretch film 12 from being damaged, and the wear-resistant layer 17 is used to increase the wear resistance of the screen surface.

[0042] According to the above embodiment, a method for preparing a high-gain and large-scattering-angle metal screen coating is also provided, comprising the following steps:

[0043] In the first step, the screen substrate layer 15 is punched with a punching device 20 to form a first screen; a polyurethane elastomer is hot-pressed on the bottom of the screen substrate layer 15 by a hot-pressing molding machine to form a second screen;

[0044] In the second step, a mixture of acrylic resin and polyvinyl chloride is sprayed on the second screen by using a spraying device 30, and after drying, a third screen is generated. A mixture of film-forming resin, pigment, light diffuser, curing agent, filler, defoamer, antioxidant, diluent and leveling agent is sprayed on the third screen by using a spraying device 30, and after drying, a fourth screen is obtained. The flexible stretch film 12 is bonded to the fourth screen to obtain a fifth screen.

[0045] In the third step, acrylic resin is sprayed on the screen five using the spraying device 30, and the screen six is ​​obtained after drying. Then, epoxy resin, silane coupling agent and aluminum oxide mixed liquid are sprayed on the screen six, and the finished metal screen is obtained after drying.

[0046] Please refer to the attached Figure 3 , 4As shown in Figures 6 and 8, in a preferred embodiment of the present invention, the punching device 20 includes a working platform 21, and a top plate 22 connected to the upper surface of the working platform 21 through a supporting column, a screen punching spreading box 23 arranged on the working platform 21, a screen traction component 24 symmetrically arranged on both sides of the screen punching spreading box 23, a plurality of lifting punching components 25 arranged in a linear array on the inner wall of the screen punching spreading box 23, a first movable component 26 and a second movable component 27 arranged at the bottom of the top plate 22, an auxiliary pressure punching box 28 is provided at the execution end of the first movable component 26, a plurality of linearly distributed auxiliary pressure holes 281 are provided at the bottom of the auxiliary pressure punching box 28, a flow channel 282 connecting the plurality of auxiliary pressure holes 281 is provided in the auxiliary pressure punching box 28, and the flow channel 28 2 pipeline is connected to the negative pressure pump 29 arranged on the top plate 22, the screen traction component 24 includes a first linear guide rail 241 arranged on the side wall of the screen punching and spreading box 23, a first telescopic cylinder 242 arranged at the execution end of the first linear guide rail 241, a pad 243 arranged at the execution end of the first telescopic cylinder 242, a pressing plate 244 arranged on the upper part of the pad 243, and a second telescopic cylinder 245 arranged on the upper surface of the pressing plate 244 and the execution end passes through the pressing plate 244 and connects to the upper surface of the pad 243, the lifting punching component 25 symmetrically includes a hydraulic cylinder 251 arranged on the inner wall of the screen punching and spreading box 23, a support plate 252 arranged at the execution end of the hydraulic cylinder 251, and a plurality of punching heads 253 arranged in a linear array on the support plate 252.

[0047] It should be noted that, in this embodiment, during preparation, the screen substrate layer is spread on the screen punching spreading box 23 by using the screen pulling component 24, and the screen substrate layer 15 is punched by using the lifting punching component 25 and the auxiliary pressure punching box 28 to generate the first screen, and the polyurethane elastomer is hot-pressed on the bottom of the screen substrate layer 15 by using the hot pressing molding machine to generate the second screen; the acrylic resin and polyvinyl chloride resin mixture is sprayed on the second screen by using the spraying device 30, and after drying, the third screen is generated, and the film-forming resin is sprayed on the second screen by using the spraying device 30. A mixture of grease, pigment, light diffuser, curing agent, filler, defoamer, antioxidant, diluent and leveling agent is sprayed on screen three, and screen four is obtained after drying; the flexible stretch film 12 is pulled to the upper surface of screen four by screen pulling component 24, and the flexible stretch film 12 is bonded to screen four to obtain screen five; acrylic resin is sprayed on screen five by spraying device 30, and screen six is ​​obtained after drying, and then epoxy resin, silane coupling agent and aluminum oxide mixed liquid are sprayed on screen six, and a finished metal screen is obtained after drying;

[0048] Further, 16.5 parts of acrylic resin, 9 parts of nano aluminum silver paste, 3.5 parts of nano silicon dioxide, 5.5 parts of isocyanate, 11 parts of ultrafine bicarbonate, 1 part of methyl silicone oil, 4 parts of potassium carbonate, 21 parts of butyl acetate, 10 parts of ethyl acetate, 12.5 parts of ethylene glycol ethyl ether acetate, 6 parts of cellulose acetate butyrate, the particle size of the nano aluminum silver paste is 25nm, and the particle size of the nano silicon dioxide is 30nm. The above materials are mixed, sand-milled, precipitated, filtered, diluted and stirred to prepare a coating, which can be sprayed through a spraying device 30;

[0049] Furthermore, when the screen pulling component 24 is working, the first telescopic cylinder 242 controls the height of the pad 243, and the second telescopic cylinder 245 drives the pressing plate 244 to move, so that the edge of the screen is clamped between the pad 243 and the pressing plate 244, and the screen is driven to spread through the first linear guide rail 241;

[0050] Furthermore, when the lifting and punching component 25 cooperates with the auxiliary pressure punching box 28 to punch holes, the first moving component 26 moves the auxiliary pressure punching box 28 to the top of one of the lifting and punching components 25, and the bottom of the auxiliary pressure punching box 28 presses the screen, and the hydraulic cylinder 251 drives the support plate 252 to move upward, so that the punching head 253 penetrates the screen and enters the auxiliary pressure hole 281 to complete the punching.

[0051] Please refer to the attached Figure 5 , 7 As shown, in a preferred embodiment of the present invention, the execution end of the second movable component 27 is connected to the spraying device 30, and the second movable component 27 includes a second linear guide rail 271 symmetrically arranged at the bottom of the top plate 22, a fixed plate 272 arranged at the execution end of the second linear guide rail 271, a lifting plate 273 arranged at the bottom of the fixed plate 272, and a cylinder 274 symmetrically arranged at both ends of the bottom surface of the lifting plate 273 and the execution end passes through the lifting plate 273 and connects to the bottom of the fixed plate 272. The second movable component 27 has the same structure as the first movable component 26, and the spraying device 30 includes a transmission pipe 31 arranged at the bottom of the lifting plate 273, a plurality of nozzles 32 arranged at the bottom of the transmission pipe 31, and a feeding pipe 33 connected to the transmission pipe 31.

[0052] It should be noted that, in this embodiment, when the raw material is sprayed, the second moving component 27 drives the spraying device 30 to move so as to perform uniform spraying. When spraying, the raw material enters the transmission pipe 31 through the feed pipe 33 and is sprayed on the screen through the nozzle 32;

[0053] Furthermore, when the second moving component 27 is working, the second linear guide rail 271 drives the fixed plate 272 and the spraying device 30 to move horizontally, and the cylinder 274 drives the lifting plate 273 to move up and down, so as to drive the spraying device 30 to move up and down;

[0054] Furthermore, the raw material will adhere to the punching head 253 after being sprayed, and the first movable component 26 drives the auxiliary pressure punching box 28 to move so that the punching head 253 is placed in the auxiliary pressure hole 281. At this time, the negative pressure pump 29 is turned on to absorb the raw material on the surface of the punching head 253 through the pipeline to recover the raw material.

[0055] The specific process of the present invention is as follows:

[0056] Sound waves pass through the screen coating 10 through the sound-permeable holes 101, so that the sound of the speakers behind the screen can be transmitted to the front of the metal screen. The anti-vibration layer 16 is a polyurethane elastomer, which is convenient for absorbing sound waves that have not passed through the sound-permeable holes 101 and reducing the vibration of the screen. The screen substrate layer 15 is polyvinyl chloride, which is convenient for giving the screen high strength. The protective transition layer 14 is a mixture of acrylic resin and polyvinyl chloride, which is convenient for increasing the strength of the screen while facilitating the attachment of the metal layer 13. The metal layer 13 is convenient for high-gain imaging, which is convenient for reducing interfering light waves and eliminating the blurred foggy feeling of traditional projection screens. The flexible stretch film 12 is convenient for increasing the flexibility and ductility of the screen. The protective layer 11 is convenient for providing safety protection for the screen surface to prevent the flexible stretch film 12 from being damaged. The wear-resistant layer 17 increases the wear resistance of the screen surface.

[0057] During the preparation, the screen substrate layer is spread on the screen punching spreading box 23 by using the screen pulling component 24, and the screen substrate layer 15 is punched by using the lifting punching component 25 and the auxiliary pressure punching box 28 to generate the first screen. The polyurethane elastomer is hot-pressed on the bottom of the screen substrate layer 15 by using the hot pressing molding machine to generate the second screen. The acrylic resin and polyvinyl chloride resin mixture is sprayed on the second screen by using the spraying device 30, and the third screen is generated after drying. The film-forming resin, pigment, and light diffusing agent are sprayed on the second screen by using the spraying device 30. A mixture of powder, curing agent, filler, defoamer, antioxidant, diluent and leveling agent is sprayed on screen three, and screen four is obtained after drying; the flexible stretch film 12 is pulled to the upper surface of screen four by screen pulling component 24, and the flexible stretch film 12 is bonded to screen four to obtain screen five; acrylic resin is sprayed on screen five by spraying device 30, and screen six is ​​obtained after drying, and then epoxy resin, silane coupling agent and aluminum oxide mixed liquid are sprayed on screen six, and a finished metal screen is obtained after drying;

[0058] 16.5 parts of acrylic resin, 9 parts of nano aluminum silver paste, 3.5 parts of nano silicon dioxide, 5.5 parts of isocyanate, 11 parts of ultrafine bicarbonate, 1 part of methyl silicone oil, 4 parts of potassium carbonate, 21 parts of butyl acetate, 10 parts of ethyl acetate, 12.5 parts of ethylene glycol ethyl ether acetate, 6 parts of cellulose acetate butyrate, the particle size of the nano aluminum silver paste is 25nm, the particle size of the nano silicon dioxide is 30nm, the above materials are mixed, sand-milled, precipitated, filtered, diluted and stirred to prepare the coating, and then sprayed by the spraying device 30;

[0059] When the screen pulling component 24 is working, the first telescopic cylinder 242 controls the height of the pad 243, and the second telescopic cylinder 245 drives the pressing plate 244 to move, so that the edge of the screen is clamped between the pad 243 and the pressing plate 244, and the screen is driven to spread through the first linear guide rail 241;

[0060] When the lifting punching component 25 cooperates with the auxiliary pressure punching box 28 to punch holes, the first moving component 26 moves the auxiliary pressure punching box 28 to the top of one of the lifting punching components 25, the bottom of the auxiliary pressure punching box 28 presses the screen, and the hydraulic cylinder 251 drives the support plate 252 to move upward, so that the punching head 253 penetrates the screen and enters the auxiliary pressure hole 281 to complete the punching;

[0061] When the raw material is sprayed, the second moving part 27 drives the spraying device 30 to move so as to spray evenly. When spraying, the raw material enters the transmission pipe 31 through the feed pipe 33 and is sprayed on the screen through the nozzle 32;

[0062] When the second moving part 27 is working, the second linear guide rail 271 drives the fixed plate 272 and the spraying device 30 to move horizontally, and the cylinder 274 drives the lifting plate 273 to move up and down, so as to drive the spraying device 30 to move up and down;

[0063] After being sprayed, the raw material will adhere to the punching head 253. The first movable component 26 drives the auxiliary pressure punching box 28 to move so that the punching head 253 is placed in the auxiliary pressure hole 281. At this time, the negative pressure pump 29 is turned on to absorb the raw material on the surface of the punching head 253 through the pipeline to recover the raw material.

[0064] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A high-gain and large-scattering-angle metal screen coating, comprising a screen coating (10), characterized in that: The screen coating (10) is provided with a plurality of sound-permeable holes (101). The screen coating (10) comprises a wear-resistant layer (17), a protective layer (11), a flexible stretch film (12), a metal layer (13), a protective transition layer (14), a screen substrate layer (15) and a shock-resistant layer (16) which are arranged in order from top to bottom. The shock-resistant layer (16) is formed by hot pressing at the bottom of the screen substrate layer (15), and the protective transition layer (14) is coated on the top of the screen substrate layer (15). The screen substrate layer (15) is polyvinyl chloride, the shock-resistant layer (16) is polyurethane elastomer, the protective transition layer (14) is a mixture of acrylic resin and polyvinyl chloride, and the metal layer (13) is sprayed on the protective transition layer. (14) top, the metal layer (13) includes a film-forming resin, a pigment, a light diffuser, a curing agent, a filler, a defoaming agent, an antioxidant, a diluent, and a leveling agent; the film-forming resin is an acrylic resin, the pigment is a nano-aluminum silver paste, the light diffuser is nano-silicon dioxide, the flexible stretch film (12) is bonded to the metal layer (13), the flexible stretch film (12) is a mixture of nano-zinc oxide, nano-graphene and nano-gold, the protective layer (11) is coated on the surface of the flexible stretch film (12), the protective layer (11) is an acrylic resin, the wear-resistant layer (17) is sprayed on the surface of the protective layer (11), and the wear-resistant layer (17) is a mixture of epoxy resin, silane coupling agent and aluminum oxide.

2. The high-gain, large-scattering-angle metal screen coating according to claim 1, characterized in that: The curing agent is isocyanate, the filler is ultrafine calcium carbonate, the defoaming agent is methyl silicone oil, the antioxidant is potassium carbonate, the diluent is a mixture of butyl acetate, ethyl acetate and ethylene glycol ethyl ether acetate, and the leveling agent is cellulose acetate butyrate.

3. A method for preparing a high-gain and large-scattering-angle metal screen coating, characterized in that: The following steps are involved: The first step is to use a punching device (20) to punch holes in the screen substrate layer (15) to generate screen one; and to use a hot pressing molding machine to hot press mold a polyurethane elastomer on the bottom of the screen substrate layer (15) to generate screen two; In the second step, a mixture of acrylic resin and polyvinyl chloride is sprayed on the second screen by using a spraying device (30), and after drying, a third screen is generated. A mixture of film-forming resin, pigment, light diffuser, curing agent, filler, defoamer, antioxidant, diluent and leveling agent is sprayed on the third screen by using a spraying device (30), and after drying, a fourth screen is obtained. The flexible stretch film (12) is bonded to the fourth screen to obtain a fifth screen. In the third step, acrylic resin is sprayed on the screen five using a spraying device (30), and after drying, a screen six is ​​obtained. Then, a mixed liquid of epoxy resin, silane coupling agent and aluminum oxide is sprayed on the screen six, and after drying, a finished metal screen is obtained.

4. The method for preparing a high-gain and large-scattering-angle metal screen coating according to claim 3, characterized in that: The punching device (20) comprises a working platform (21), a top plate (22) connected to the upper surface of the working platform (21) via a supporting column, a screen punching spreading box (23) arranged on the working platform (21), a screen pulling component (24) symmetrically arranged on both sides of the screen punching spreading box (23), a plurality of lifting punching components (25) arranged in a linear array on the inner wall of the screen punching spreading box (23), and a first moving component (26) arranged at the bottom of the top plate (22). and a second movable component (27), wherein an auxiliary pressure punching box (28) is provided at an execution end of the first movable component (26), and the execution end of the second movable component (27) is connected to a spraying device (30), and a plurality of linearly distributed auxiliary pressure holes (281) are provided at the bottom of the auxiliary pressure punching box (28), and a flow channel (282) connecting the plurality of auxiliary pressure holes (281) is provided inside the auxiliary pressure punching box (28), and a pipeline of the flow channel (282) is connected to a negative pressure pump (29) arranged on the top plate (22).

5. The method for preparing a high-gain and large-scattering-angle metal screen coating according to claim 4, characterized in that: The screen pulling component (24) comprises a first linear guide rail (241) arranged on the side wall of the screen perforated spreading box (23), a first telescopic cylinder (242) arranged on the execution end of the first linear guide rail (241), a pad (243) arranged on the execution end of the first telescopic cylinder (242), a pressing plate (244) arranged on the upper part of the pad (243), and a second telescopic cylinder (245) arranged on the upper surface of the pressing plate (244) and having an execution end that passes through the pressing plate (244) and is connected to the upper surface of the pad (243).

6. The method for preparing a high-gain and large-scattering-angle metal screen coating according to claim 4, characterized in that: The lifting punching component (25) symmetrically comprises a hydraulic cylinder (251) arranged on the inner wall of the screen punching spreading box (23), a support plate (252) arranged on the execution end of the hydraulic cylinder (251), and a plurality of punching heads (253) arranged in a linear array on the support plate (252).

7. The method for preparing a high-gain and large-scattering-angle metal screen coating according to claim 4, characterized in that: The second movable component (27) includes a second linear guide rail (271) symmetrically arranged at the bottom of the top plate (22), a fixed plate (272) arranged at the execution end of the second linear guide rail (271), a lifting plate (273) arranged at the bottom of the fixed plate (272), and a cylinder (274) symmetrically arranged at both ends of the bottom surface of the lifting plate (273) and the execution end of which passes through the lifting plate (273) and is connected to the bottom of the fixed plate (272). The second movable component (27) has the same structure as the first movable component (26). The spraying device (30) includes a transmission pipe (31) arranged at the bottom of the lifting plate (273), a plurality of nozzles (32) arranged at the bottom of the transmission pipe (31), and a feeding pipe (33) connected to the transmission pipe (31).

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