A coating and drying device for liquid crystal film production

Abstract

The application belongs to the technical field of liquid crystal film production, and particularly relates to a coating and drying equipment for liquid crystal film production, which comprises a shell, a gas supply system, a dust removal assembly, a coating assembly and a drying assembly. Through the setting of the dust removal assembly, the ionized air with positive and negative charges is generated at the slit position through the mutual discharge between the positive plate and the negative plate, the ionized air is blown to the electrostatic charge on the surface of the liquid crystal film through the long through port for static electricity removal, and the dust on the surface of the liquid crystal film is blown down at the same time. The dust that is not blown down is scraped down by the top of the scraper, is attracted and discharged by the negative pressure suction cover, and the space between the long through port and the short through port is blocked by the scraper. The positive plate position below the scraper generates ionized air with only negative charge in the air through the direct current discharge mode. The ionized air blown out of the short through port makes the surface of the cleaned liquid crystal film have static electricity, which is convenient for subsequent spraying and film coating.

Description

Technical Field

[0001] The present invention relates to the technical field of thin film coating equipment, in particular to a coating and drying equipment for producing liquid crystal films. Background Art

[0002] Liquid crystal film was first used to protect mobile phone screens, and then developed into the protection of LCD screens such as laptop screens. With the entry of fashionable IT brand protective films into the market, it has added more fashionable and practical elements, such as frosted film, mirror film, anti-peep film, AR film protective film, etc. When producing liquid crystal film, different raw materials need to be coated, dried and cured on the base layer according to functional requirements to form an attachment layer that provides different functions.

[0003] Patent application CN207025720U discloses a protective film scraping and drying device. Before coating, an electrostatic dust collector is installed to absorb fine dust on the surface of the protective film, ensuring the cleanliness of the protective film and improving the quality of the protective film processing.

[0004] However, when using an electrostatic vacuum cleaner for dust removal, a large number of air particles are generated in the space. The ionized particles will not only adhere to the surface of the dust, but also flow and adhere to the surface of the membrane, causing static electricity on the membrane surface and then adsorbing dust in the air, resulting in poor cleaning effect on the membrane surface. For this reason, we propose a coating and drying equipment for liquid crystal film production to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose a coating and drying device for liquid crystal film production.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A coating and drying device for producing liquid crystal films, comprising a shell, an air supply system, a dust removal component, a coating component and a drying component, wherein the dust removal component, the coating component and the drying component are sequentially installed in the shell from left to right, an air supply system for supplying air to the dust removal component and the drying component is installed on the left side of the shell, the air supply system comprises a pump, an air inlet end of the pump is installed with a filter, an air outlet end of the pump is installed with a first air supply pipe and a second air supply pipe connected in series, the dust removal component comprises an air distribution shell connected to the first air supply pipe, a positive plate and a negative plate arranged up and down are installed on the inner side of the air distribution shell, an extension plate is installed on the opposite side of the positive plate and the negative plate, a slit is left between the extension plates, and the air distribution The shell is provided with left and right corresponding air supply shells and long through-ports at the slit, a through-port is provided in the middle of the positive plate, and the air distribution shell is provided with left and right corresponding air ducts and short through-ports at the through-port; a coating assembly: comprising a cover shell with a downward opening, atomizing sheets arranged equidistantly are installed in the middle of the cover shell, a relay shell connected in series through a connecting pipe is installed above the atomizing sheets, a liquid supply head is installed at the bottom end of the relay shell, a quantitative liquid supply shaft for quantitatively supplying liquid to the liquid supply head is rotatably installed in the middle of the relay shell, and an electric heating bearing plate is provided under the cover shell; a drying assembly: comprising an air passage shell connected to the second air supply pipe, a static elimination assembly is plugged in and installed in the middle of the air passage shell, and a heat exchanger is installed in series on the second air supply pipe;

[0008] The liquid crystal film enters the shell from the left end and is transported out from the right end. During this process, the liquid crystal film will be sequentially subjected to static electricity removal, dust removal, static electricity adhesion, atomization coating, heating and curing and static electricity removal by the dust removal component, among which static electricity removal, dust removal and static electricity adhesion are completed at the dust removal component. The positive plate and the negative plate cooperate to play the role of an ion fan, and the positive plate itself can play the role of an electrostatic generator. Static electricity can ensure that the coating thickness is more uniform, and with the equally spaced atomizer sheets and the quantitative liquid supply shaft for quantitative liquid supply, it can ensure that the coating material can be The liquid crystal film is evenly atomized in the space after being equally divided into multiple parts. During the coating process, the electric heating carrier plate will heat the liquid crystal film to avoid different curing times of the coating materials that fall one after another, ensuring that the coating material is always in liquid during the coating process, further ensuring the uniformity of the atomized coating, and in the drying position, the heat source of the air shell is the electric heating carrier plate. The heat of the electric heating carrier plate is fully utilized by the heat exchanger to dry the coating, and at the same time, the static elimination operation is performed for the second time by using the static elimination component connected in parallel with the positive plate and the negative plate, which is convenient for subsequent transmission and winding.

[0009] Preferably, the extension plates are arranged in a mirror-image staggered manner, the slits are formed into a serpentine shape, and the opposite side walls of two adjacent extension plates are welded to form corresponding electrode heads;

[0010] The serpentine shape can provide sufficient installation space for equidistantly arranged electrode heads. The uniform spacing between the electrode heads can stably generate equidistant breakdown arcs. The use of corrosion-resistant materials for surfacing has a long maintenance cycle and can ensure that dust is fully dropped when air is blown, preventing the surface static electricity of the liquid crystal film from affecting the dust removal efficiency.

[0011] Preferably, a connecting plate is installed at one end of the extension plates away from each other, and the connecting plate is assembled and connected to the adjacent positive plate or negative plate by bolts. A rack is installed on the side of the connecting plate facing the positive plate and the negative plate, and a tooth groove is opened in the middle of the positive plate or the negative plate to cooperate with the rack;

[0012] The connecting plate ensures that the extension plate is removable. After the edge of the extension plate is eroded by the arc, it can be replaced and maintained separately. The rack and the tooth groove ensure a large contact area to reduce resistance and avoid overheating of the contact position or excessive waste of electricity.

[0013] Preferably, the air distribution housing is provided with scrapers arranged on the left and right sides of the liquid crystal film between the long through port and the short through port, the scrapers are provided with an arc guide surface on the side facing the air distribution housing, a suction cover is provided on the middle of the arc guide surface of the scrapers, a dust clearance gap is provided between the suction cover and the arc guide surface, and an air suction pipe connected to the air supply system is provided at the rear end of the suction cover;

[0014] The scraper can scrape off the dust on the surface of the liquid crystal film, and cooperate with the suction hood to form a high-speed airflow at the dust gap to discharge the dust. The positive pressure of the air supply system is used for air supply, and the negative pressure is used for waste suction, so that the work of the air supply system is fully utilized.

[0015] Preferably, the quantitative liquid supply shafts are fixedly connected by a transmission rod, the circumferential side walls of the quantitative liquid supply shafts are provided with equally spaced material receiving grooves, the inner side of the relay housing is provided with end plates that are in sliding contact with the front and rear ends of the quantitative liquid supply shafts, and a material passage is left between the top end of the end plate and the inner wall of the top end of the relay housing;

[0016] The material passing through the feed port will be quantitatively supplied from the material storage trough of the quantitative liquid supply shaft. The transmission rod drives all the quantitative liquid supply shafts to rotate synchronously, ensuring that all the atomizing pieces can receive the same amount of coating material at the same time, ensuring uniform atomization distribution of the material.

[0017] Preferably, a flexible ring is installed between the outer edge of the atomizing plate and the inner wall of the housing, an annular resonance component is installed at the bottom end of the atomizing plate, and a concave portion with micropores is provided in the middle of the atomizing plate;

[0018] The flexible ring can ensure that the resonant component drives the atomizer to vibrate efficiently, and the concave portion prevents the coating material from flowing freely, resulting in waste and insufficient atomization, effectively controlling the material utilization rate and the accuracy of the coating amount.

[0019] Preferably, the inner wall of the lower portion of the housing is provided with an upward convex edge, the top of the upward convex edge is provided with a drainage groove with a waste pipe, and the right portion of the housing is provided with a UV light bar;

[0020] The upward convex edge is combined with a drainage groove with a waste pipe to prevent droplets of coating material from dripping directly onto the liquid crystal film during atomization coating. After coating, they are uniformly irradiated and cured at the position of the UV light bar to ensure stable and uniform atomization coating.

[0021] Preferably, the heat exchanger is arranged at the bottom end of the electric heating support plate, and the heat exchanger has a built-in serpentine heat exchange channel;

[0022] The heat exchanger has a built-in serpentine heat exchange channel to absorb the heat of the electric heating carrier plate. There is no need to set up a separate heat source, and the heat generated by the electric heating carrier plate can be fully utilized.

[0023] Preferably, the air vent housing is located on the left and right sides of the liquid crystal film, and an air distribution plate is provided on the side of the air vent housing facing the liquid crystal film;

[0024] The air is evenly distributed through the air distribution plate, ensuring that the left and right surfaces of the liquid crystal film can evenly receive the ionized hot air and blow it at the same time, thereby improving the drying and static removal effects.

[0025] Preferably, the housing is equipped with a reversing roller, and the reversing roller is in rolling contact with the liquid crystal film for tensioning;

[0026] The reversing roller can tension the liquid crystal film to prevent the liquid crystal film from curling and ensure stable transportation. Compared with the existing technology, the advantages of this coating and drying equipment for liquid crystal film production are:

[0027] 1. Through the setting of the dust removal component, the extended plate between the positive plate and the negative plate discharges each other to generate ionized air with positive and negative charges at the slit position. The long through-hole blows the ionized air to the liquid crystal film and the static charge on the surface of the liquid crystal film to remove static electricity, and at the same time blows off the dust on the surface of the liquid crystal film. The dust that is not blown off will be shoveled off by the top of the scraper and sucked out by the negative pressure suction hood. The scraper separates the space between the long through-hole and the short through-hole. The positive plate position below the scraper will generate ionized air with only negative charge in the air by DC discharge. The ionized air blown out from the short through-hole makes the surface of the cleaned liquid crystal film have static electricity, which is convenient for subsequent spray coating.

[0028] 2. Through the setting of the coating component, the coating liquid enters the relay shell from the connecting pipe. When the quantitative liquid supply shaft in the relay shell rotates a certain angle, it can provide a quantitative coating liquid to the liquid supply head to ensure the feeding accuracy. The coating liquid droplets fall on the concave part of the atomizing plate, and are atomized into particles by the atomizing plate and drift downward in the air. They are evenly adsorbed by the static electricity on the upper surface of the liquid crystal film to achieve coating. There is an electric heating carrier plate under the liquid crystal film to ensure that the coating materials that fall one after another will not be cured one after another, but are uniformly irradiated at the position of the UV light bar for primary curing, which can improve the uniformity of the atomization coating process. The static electricity on the lower surface of the liquid crystal film helps the liquid crystal film to adhere to the top plane of the electric heating carrier plate, avoiding the liquid crystal film from warping up and approaching the cover during transmission, resulting in uneven coating.

[0029] 3. Through the setting of the drying component, the air shell is supplied with air through the second air supply pipe, and the intake air is heated by the electric heating support plate. The temperature of the electric heating support plate is used as the heat source, and there is no need to set up a separate heating equipment. The structure is compact and maintenance is convenient. The liquid crystal film can be heated by blast heating on the left and right sides to achieve complete curing and forming of the liquid crystal film coating layer. During the heating process, the static elimination component will ionize the air through the built-in positive and negative electrode discharge. The ionized air will neutralize the charge on the surface of the liquid crystal film to perform static elimination operations, which is convenient for subsequent transportation and winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a left side schematic diagram of the present invention;

[0031] Figure 2 It is the internal structure diagram of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the dust removal component of the present invention;

[0033] Figure 4 is a schematic cross-sectional view of the dust removal assembly of the present invention;

[0034] Figure 5 A schematic diagram of the separation between the scraper and the suction hood of the present invention;

[0035] Figure 6 It is a schematic diagram of the position of the coating component of the present invention;

[0036] Figure 7 It is an enlarged schematic diagram of a part of the coating assembly of the present invention;

[0037] Figure 8 for Figure 7 A magnified schematic diagram of point A in the middle;

[0038] Figure 9 This is a structural diagram of the drying component of the present invention.

[0039] Figure: housing 1, reversing roller 11, air supply system 2, pump 21, first air supply pipe 22, second air supply pipe 23, filter 24, dust removal assembly 3, positive plate 31, through-hole 311, negative plate 32, tooth groove 321, air distribution housing 33, long through-hole 331, short through-hole 332, air supply housing 333, air duct 334, air intake pipe 34, suction hood 341, scraper 342, arc guide surface 343, dust clearance 344, extension plate 35, electrode head 351, slit 352, connecting plate 353, rack 354, coating assembly 4, atomizing sheet 41, flexible ring 411, resonance assembly 412, recessed portion 413, connecting pipe 42, liquid supply head 421, relay shell 422, cover shell 43, drainage groove 431, upward protrusion 432, UV light bar 44, electric heating bearing plate 45, quantitative liquid supply shaft 47, transmission rod 471, material trough 472, end plate 473, material outlet 474, drying assembly 5, heat exchanger 51, air outlet shell 52, static elimination assembly 53, air balancing plate 54. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] Example 1

[0042] Reference Figure 1-3, 7 and 9, a coating and drying device for producing liquid crystal films, comprising a shell 1, an air supply system 2, a dust removal component 3, a coating component 4 and a drying component 5, the dust removal component 3, the coating component 4 and the drying component 5 are sequentially installed in the shell 1 from left to right, an air supply system 2 for supplying air to the dust removal component 3 and the drying component 5 is installed on the left side of the shell 1, the air supply system 2 comprises a pump 21, a filter 24 is installed at the air inlet end of the pump 21, a first air supply pipe 22 and a second air supply pipe 23 are installed in series at the air outlet end of the pump 21, the dust removal component 3: comprises an air distribution shell 33 which is connected to the first air supply pipe 22, a positive plate 31 and a negative plate 32 arranged up and down are installed on the inner side of the air distribution shell 33, an extension plate 35 is installed on the opposite side of the positive plate 31 and the negative plate 32, a slit 352 is left between the extension plates 35, and the air distribution shell 33 is located in the slit 352 There are left and right corresponding air supply shells 333 and long through-holes 331, a through-hole 311 is opened in the middle of the positive plate 31, and the air distribution shell 33 is located at the through-hole 311 and is provided with left and right corresponding air ducts 334 and short through-holes 332; the coating component 4: includes a cover shell 43 with a downward opening, and an equidistantly arranged atomizing sheet 41 is installed in the middle of the cover shell 43, and a relay shell 422 is installed above the atomizing sheet 41 in series through a connecting pipe 42, and a liquid supply head 421 is installed at the bottom end of the relay shell 422, and a quantitative liquid supply shaft 47 for quantitatively supplying liquid to the liquid supply head 421 is rotatably installed in the middle of the relay shell 422, and an electric heating bearing plate 45 is provided below the cover shell 43; the drying component 5: includes an air passage shell 52 that is connected to the second air supply pipe 23, and an electrostatic elimination component 53 is plugged and installed in the middle of the air passage shell 52, and a heat exchanger 51 is installed in series on the second air supply pipe 23.

[0043] During the coating and drying process, the liquid crystal film enters the outer shell 1 from the left end and is transported out from the right end. During this process, the liquid crystal film will be sequentially subjected to static electricity removal, dust removal, static electricity adhesion, atomization coating, heating and curing, and static electricity removal by the dust removal component 3, coating component 4, and drying component 5. The static electricity removal, dust removal, and static electricity adhesion are completed at the dust removal component position. The positive plate 31 and the negative plate 32 are respectively connected to the positive and negative poles of the external DC power supply, and act as an ion fan. A breakdown arc is generated at the slit 352 position to ionize the air. The air supply shell 333 blows the ionized air from the long through port 331 to the liquid crystal film, which can remove static electricity and dust on the surface of the liquid crystal film. Between the air duct 334 and the short through port 332, because it only contacts the positive plate, the positive plate can also act as an electrostatic generator, attaching a negative charge to the air flowing through, so that the cleaned The liquid crystal film carries static electricity. The liquid crystal film with static electricity can ensure that the coating thickness is more uniform during atomization coating, and with the equally spaced atomizing sheets 41 and the quantitative liquid supply shaft 47 for quantitative liquid supply, it can ensure that the coating material can be evenly atomized in multiple equal parts in space. During the coating process, the electric heating carrier plate 45 will heat the liquid crystal film to avoid different curing times of the coating materials that fall one after another, ensuring that the coating material is always in a liquid state during the coating process, further ensuring the uniformity of the atomized coating, and in the drying position, the heat source of the air shell 52 is the electric heating carrier plate 45. The heat generated by the electric heating carrier plate 45 is fully utilized by the heat exchanger 51 to dry the coating, and at the same time, the static elimination component 53 connected in parallel with the positive plate 31 and the negative plate 32 is used to perform a second static elimination operation to facilitate subsequent transmission and winding.

[0044] Example 2

[0045] Reference Figure 1-5, a coating and drying equipment for liquid crystal film production, including a shell 1, an air supply system 2, a dust removal component 3, a coating component 4 and a drying component 5, the dust removal component 3, the coating component 4 and the drying component 5 are installed in the shell 1 from left to right in sequence, the shell 1 is provided with an air supply system 2 for supplying air to the dust removal component 3 and the drying component 5, the air supply system 2 includes a pump 21, the air inlet end of the pump 21 is provided with a filter 24, the air outlet end of the pump 21 is provided with a first air supply pipe 22 and a second air supply pipe 23 connected in series, the dust removal component 3: includes an air distribution shell 33 connected to the first air supply pipe 22, the inner side of the air distribution shell 33 is provided with a positive plate 31 and a negative plate 32 arranged up and down, an extension plate 35 is provided on the opposite side of the positive plate 31 and the negative plate 32, a slit 352 is left between the extension plates 35, and the air distribution shell 33 is provided at the slit 352 There are left and right corresponding air supply shells 333 and long through-holes 331, a through-hole 311 is opened in the middle of the positive plate 31, and the air distribution shell 33 is provided with left and right corresponding air ducts 334 and short through-holes 332 at the through-hole 311; the coating component 4: includes a cover shell 43 with a downward opening, and an equidistantly arranged atomizing sheet 41 is installed in the middle of the cover shell 43, and a relay shell 422 connected in series through a connecting pipe 42 is installed above the atomizing sheet 41, and a liquid supply head 421 is installed at the bottom end of the relay shell 422, and a quantitative liquid supply shaft 47 for quantitatively supplying liquid to the liquid supply head 421 is rotatably installed in the middle of the relay shell 422, and an electric heating bearing plate 45 is arranged under the cover shell 43; the drying component 5: includes an air passage shell 52 that is connected to the second air supply pipe 23, and an electrostatic elimination component 53 is plugged and installed in the middle of the air passage shell 52, and a heat exchanger 51 is installed in series on the second air supply pipe 23.

[0046] Specifically, the extension plates 35 are arranged in a mirror-image manner, the slits 352 are formed into a serpentine shape, and the opposite side walls of two adjacent extension plates 35 are welded to form corresponding electrode heads 351 .

[0047] Furthermore, a connecting plate 353 is installed at one end of the extension plate 35 away from each other, and the connecting plate 353 is assembled and connected to the adjacent positive plate 31 or negative plate 32 by bolts. A rack 354 is installed on the side of the connecting plate 353 facing the positive plate 31 and the negative plate 32, and a tooth groove 321 is opened in the middle of the positive plate 31 or the negative plate 32 to cooperate with the rack 354.

[0048] Furthermore, the air distribution housing 33 is located between the long through port 331 and the short through port 332 and is equipped with scrapers 342 arranged on the left and right sides of the liquid crystal film. The scraper 342 is provided with an arc guide surface 343 facing the side of the air distribution housing 33. The scraper 342 is located in the middle of the arc guide surface 343 and is equipped with a suction hood 341. A dust clearance gap 344 is provided between the suction hood 341 and the arc guide surface 343. The rear end of the suction hood 341 is equipped with an air intake pipe 34 that is connected to the air supply system 2.

[0049] In order to ensure the dust removal effect, the extension plates 35 are arranged in a mirror-like staggered manner, which can form a serpentine shape between the side walls, and can provide sufficient installation space for the electrode heads 351 arranged at equal distances. After the positive plate 31 and the negative plate 32 are powered, the positive plate 31 and the negative plate 32 respectively have positive and negative voltages, thereby generating an arc discharge phenomenon at the position of the electrode head 351. The electrode heads 351 are evenly spaced, and can stably generate an equidistant breakdown arc at the position of the slit 352. The electrode heads 351 are formed by surfacing welding with corrosion-resistant materials, so that the electrode heads 351 are easy to use. The distance between the electrode heads 351 is longer, and the distance between the electrode heads 351 is shorter than the distance between the side walls of the extension plate 35. There will be no breakdown discharge phenomenon at other positions of the extension plate 35, ensuring that the extension plate 35 works stably and has a long maintenance cycle. When a breakdown arc is generated at the position of the electrode head 351, the air passing through the slit 352 position is ionized by the dense discharge arc, generating sufficient ionized air to neutralize the static electricity on the surface of the liquid crystal film. When the air is blown, it can ensure that the dust falls fully, preventing the surface static electricity of the liquid crystal film from affecting the dust removal efficiency. The connecting plate 353 can be detachably installed on the extension plate 35 Installed on the positive plate 31 or the negative plate 32, there is an inspection plate corresponding to the positive plate 31 or the negative plate 32 on the side wall of the air distribution housing 33. After the edge of the extension plate 35 is eroded by the arc, it can be replaced separately, which is convenient for maintenance. In addition, the side wall of the connecting plate 353 has equidistantly arranged racks 354, which cooperate with the tooth grooves 321 to ensure a large contact area with the positive plate 31 or the negative plate 32, reducing the resistance at the installation position and avoiding overheating of the contact position or excessive waste of electricity due to excessive resistance at the detachable position. There are two scrapers 342, which are symmetrically arranged on the left and right sides of the vertical liquid crystal film. On both sides, it slides in contact with the left and right side walls of the liquid crystal film, so as to scrape off the dust on the surface of the liquid crystal film. The dust is sucked into the suction hood 341 through the dust gap 344 under the negative pressure of the suction pipe 34 and the suction hood 341, and is driven by the internal airflow from the suction pipe 34 to the filter 24 for filtration. The filtered clean air will be provided to the air distribution shell 33 and the air passing shell 52 again through the first air supply pipe 22 and the second air supply pipe 23, and the positive pressure of the air supply system 2 is used for air supply and the negative pressure is used for exhaust and suction, so that the work done by the air supply system 2 is fully utilized.

[0050] Example 3

[0051] Reference Figure 2 、 6-8, a coating and drying equipment for liquid crystal film production, comprising a shell 1, an air supply system 2, a dust removal component 3, a coating component 4 and a drying component 5, the dust removal component 3, the coating component 4 and the drying component 5 are sequentially installed in the shell 1 from left to right, an air supply system 2 for supplying air to the dust removal component 3 and the drying component 5 is installed on the left side of the shell 1, the air supply system 2 comprises a pumper 21, a filter 24 is installed at the air inlet end of the pumper 21, a first air supply pipe 22 and a second air supply pipe 23 connected in series are installed at the air outlet end of the pumper 21, the dust removal component 3: comprises an air distribution shell 33 connected to the first air supply pipe 22, a positive plate 31 and a negative plate 32 arranged up and down are installed on the inner side of the air distribution shell 33, an extension plate 35 is installed on the opposite side of the positive plate 31 and the negative plate 32, a slit 352 is left between the extension plates 35, and the air distribution shell 33 is located at the slit 352 There are left and right corresponding air supply shells 333 and long through-holes 331, a through-hole 311 is opened in the middle of the positive plate 31, and the air distribution shell 33 is provided with left and right corresponding air ducts 334 and short through-holes 332 at the through-hole 311; the coating component 4: includes a cover shell 43 with a downward opening, and an equidistantly arranged atomizing sheet 41 is installed in the middle of the cover shell 43, and a relay shell 422 connected in series through a connecting pipe 42 is installed above the atomizing sheet 41, and a liquid supply head 421 is installed at the bottom end of the relay shell 422, and a quantitative liquid supply shaft 47 for quantitatively supplying liquid to the liquid supply head 421 is rotatably installed in the middle of the relay shell 422, and an electric heating bearing plate 45 is provided below the cover shell 43; the drying component 5: includes an air passage shell 52 that is connected to the second air supply pipe 23, and an electrostatic elimination component 53 is plugged and installed in the middle of the air passage shell 52, and a heat exchanger 51 is installed in series on the second air supply pipe 23.

[0052] Specifically, the quantitative liquid supply shafts 47 are fixedly connected by a transmission rod 471, and the circumferential side walls of the quantitative liquid supply shafts 47 are provided with equally spaced material receiving grooves 472. An end plate 473 is installed on the inner side of the relay shell 422 to be in sliding contact with the front and rear ends of the quantitative liquid supply shaft 47, and a feed port 474 is left between the top of the end plate 473 and the inner wall of the top of the relay shell 422.

[0053] It is worth noting that a flexible ring 411 is installed between the outer edge of the atomizing plate 41 and the inner wall of the housing 43, a ring-shaped resonance component 412 is installed at the bottom end of the atomizing plate 41, and a concave portion 413 with micropores is provided in the middle of the atomizing plate 41.

[0054] It is worth noting that an upward convex edge 432 is provided on the inner wall of the lower portion of the cover shell 43 , a drainage groove 431 with a waste pipe is provided on the top of the upward convex edge 432 , and a UV light strip 44 is provided on the right portion of the cover shell 43 .

[0055] In order to improve the uniformity of the coating, the material flowing through the relay shell 422 via the feed port 474 will pass through the material trough 472 of the quantitative liquid supply shaft 47. When the quantitative liquid supply shaft 47 rotates, the material trough 472 and the feed port 474 are staggered, and the internal material is retained in the material trough 472 until it rotates to the position of the liquid supply head 421 and drips downward, thereby achieving stable quantitative feeding. During the rotation, there is always at least one material trough 472 connected to the feed port 474, ensuring that all the liquid supply heads 421 are feeding stably. The transmission rod 471 is connected to the external servo motor, which can drive all the quantitative liquid supply shafts 47 to rotate synchronously, ensuring that all the atomizing sheets 41 can receive the same amount of coating material at the same time, ensuring that the material is evenly atomized and distributed. The atomizing sheet 41 and the cover shell 43 are connected. The flexible ring 411 made of rubber is flexibly connected therebetween. The flexible ring 411 can ensure that the resonant component 412 drives the atomizing plate 41 to vibrate efficiently. During the vibration, the atomized material is sprayed downward from the micropore position. The liquid coating material will be concentrated in the lower recess 413 position instead of flowing everywhere, avoiding the waste and insufficient atomization caused by the random flow of the coating material, effectively controlling the material utilization rate and the accuracy of the coating amount. The upward convex edge 432 can carry the coating material that is gathered into drops on the inner wall of the cover 43 and falls downward, and is discharged centrally through the drainage groove 431 with a waste pipe, avoiding the droplets of coating material in the atomized coating directly dripping onto the liquid crystal film. After the coating is completed, it is uniformly irradiated and cured at the position of the UV light bar 44, ensuring stable and uniform atomized coating, and preventing adhesion to the subsequent reversing roller 11.

[0056] Example 4

[0057] Reference Figure 2 and 9, a coating and drying equipment for liquid crystal film production, including a shell 1, an air supply system 2, a dust removal component 3, a coating component 4 and a drying component 5, the dust removal component 3, the coating component 4 and the drying component 5 are installed in the shell 1 from left to right in sequence, the shell 1 is provided with an air supply system 2 for supplying air to the dust removal component 3 and the drying component 5, the air supply system 2 includes a pump 21, the air inlet end of the pump 21 is provided with a filter 24, the air outlet end of the pump 21 is provided with a first air supply pipe 22 and a second air supply pipe 23 connected in series, the dust removal component 3: includes an air distribution shell 33 connected to the first air supply pipe 22, the inner side of the air distribution shell 33 is provided with a positive plate 31 and a negative plate 32 arranged up and down, an extension plate 35 is provided on the opposite side of the positive plate 31 and the negative plate 32, a slit 352 is left between the extension plates 35, and the air distribution shell 33 is provided at the slit 352 There are left and right corresponding air supply shells 333 and long through-holes 331, a through-hole 311 is opened in the middle of the positive plate 31, and the air distribution shell 33 is provided with left and right corresponding air ducts 334 and short through-holes 332 at the through-hole 311; the coating component 4: includes a cover shell 43 with a downward opening, and an equidistantly arranged atomizing sheet 41 is installed in the middle of the cover shell 43, and a relay shell 422 connected in series through a connecting pipe 42 is installed above the atomizing sheet 41, and a liquid supply head 421 is installed at the bottom end of the relay shell 422, and a quantitative liquid supply shaft 47 for quantitatively supplying liquid to the liquid supply head 421 is rotatably installed in the middle of the relay shell 422, and an electric heating bearing plate 45 is arranged under the cover shell 43; the drying component 5: includes an air passage shell 52 that is connected to the second air supply pipe 23, and an electrostatic elimination component 53 is plugged and installed in the middle of the air passage shell 52, and a heat exchanger 51 is installed in series on the second air supply pipe 23.

[0058] Specifically, the heat exchanger 51 is disposed at the bottom end of the electric heating support plate 45 , and the heat exchanger 51 has a built-in serpentine heat exchange channel.

[0059] Furthermore, the air passing housing 52 is located on the left and right sides of the liquid crystal film, and an air balancing plate 54 is provided on the side of the air passing housing 52 facing the liquid crystal film.

[0060] Furthermore, the housing 1 has a built-in reversing roller 11, which is in rolling contact with the liquid crystal film for tension.

[0061] To ensure stable operation of the drying position, the heat exchanger 51 is equipped with a serpentine heat exchange channel. Air is input from the left end of the heat exchanger 51, and is in full contact with the bottom side wall of the electric heating support plate 45 at the position of the serpentine heat exchange channel. The air absorbs the heat of the electric heating support plate 45 and heats the provided cold air into hot air. There is no need to set up a separate heat source. The liquid crystal film can be dried with hot air while fully utilizing the heat generated by the electric heating support plate 45. There are two airflow shells 52, which can be installed on the left and right sides of the liquid crystal film on the right through a vertical symmetrical arrangement. The air is evenly discharged through the wind plate 54 to ensure that the left and right surfaces of the liquid crystal film can evenly receive the ionized hot air while being blown, thereby improving the drying and static electricity removal effects. The reversing roller 11 is installed inside the outer shell 1 through the horizontal rotation of the bearing. The reversing roller 11 can tension the liquid crystal film to prevent the liquid crystal film from curling, and the rolling contact resistance is small to ensure stable transportation.

[0062] The automatic equipment involved in the embodiment adopts the molded products provided by the manufacturer, and its supporting control system, electromagnetic switch and circuit pipeline can also be provided by the manufacturer. In addition, the power supply module, circuit and electronic components and control module involved in the present invention are all existing technologies, which can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to the internal structure and method.

[0063] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A coating and drying device for liquid crystal film production, comprising a housing, an air supply system, a dust removal assembly, a coating assembly, and a drying assembly, wherein the dust removal assembly, coating assembly, and drying assembly are sequentially installed in the housing from left to right, and an air supply system for supplying air to the dust removal assembly and drying assembly is installed on the left side of the housing, characterized in that: The dust removal assembly includes an air distribution housing connected to the first air supply pipe, wherein a positive plate and a negative plate are installed on the inner side of the air distribution housing, and an extension plate is installed on the opposite side of the positive plate and the negative plate, and a slit is left between the extension plates. A through hole is opened in the middle of the positive plate; Coating assembly: includes a downward-opening cover, with equally spaced atomizing sheets installed in the middle of the cover, a relay shell connected in series via a connecting pipe installed above the atomizing sheets, a liquid supply head installed at the bottom end of the relay shell, a quantitative liquid supply shaft rotatably installed in the middle of the relay shell for quantitatively supplying liquid to the liquid supply head, and an electric heating bearing plate installed below the cover; Drying assembly: comprising an air passage housing in communication with a second air supply pipe, wherein a heat exchanger is installed in series with the second air supply pipe; The slits are formed into a serpentine shape, and the opposite side walls of two adjacent extension plates are welded to form corresponding electrode heads; The extension plate is assembled and connected to the adjacent positive plate or negative plate through a connecting plate and bolts, and meshing racks and tooth grooves are provided between the connecting plate and the side walls of the positive plate and the negative plate; The air distribution housing is provided with a scraper between the long through-port and the short through-port, the scraper is provided with an arc guide surface on the side facing the air distribution housing, the scraper is provided with a suction cover in the middle of the arc guide surface, and a dust clearance gap is provided between the suction cover and the arc guide surface; The quantitative liquid supply shafts are fixedly connected by a transmission rod, and the circumferential side walls of the quantitative liquid supply shafts are provided with equally spaced material storage grooves. The inner side of the relay shell is provided with end plates that are in sliding contact with the front and rear ends of the quantitative liquid supply shafts, and a feed port is left between the top of the end plate and the inner wall of the top of the relay shell.

2. The coating and drying equipment for liquid crystal film production according to claim 1, characterized in that: A flexible ring is installed between the outer edge of the atomizing plate and the inner wall of the housing, and a concave portion with micropores is provided in the middle of the atomizing plate.

3. The coating and drying equipment for liquid crystal film production according to claim 2, characterized in that: An upward convex edge is provided on the inner wall of the lower part of the cover shell, and a drainage groove with a waste discharge pipe is provided on the top of the upward convex edge.

4. The coating and drying equipment for liquid crystal film production according to claim 1, characterized in that: The heat exchanger is arranged at the bottom end of the electric heating supporting plate, and the heat exchanger has a serpentine heat exchange channel built in.

5. The coating and drying equipment for producing liquid crystal films according to claim 4, characterized in that: The air passage housing is located on the left and right sides of the liquid crystal film, and an air distribution plate is provided on the side of the air passage housing facing the liquid crystal film.

6. A coating and drying device for producing liquid crystal films according to any one of claims 1 to 5, characterized in that: The shell has a built-in reversing roller, and the reversing roller is in rolling contact with the liquid crystal film for tensioning.

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