A release film coating apparatus

Abstract

This utility model belongs to the field of thin film coating technology, specifically a release film coating device, including a base and a dust removal component including a first support frame. A high-voltage power generator is installed on the first support frame, and the high-voltage power generator is connected to an ion needle via a wire. An installation block is installed on the side wall of the first support frame, and an installation groove is opened in the installation block. A pulse electromagnet is fixedly installed on the inner wall of the installation groove, and a vibration block is slidably connected in the installation groove. An iron plate is installed on the top side of the vibration block, and a vibration rod is fixedly installed on the side wall of the vibration block. Through the direct contact between the ion needle and the film, a large number of positive and negative ions are brought close to the surface of the film to neutralize static electricity, thereby realizing the elimination of static electricity on the film. When the film passes over the vibration rod, the vibration rod generates a slight vibration, which can quickly remove dust from the film, which is beneficial to improving the efficiency of dust removal and the coating quality.

Description

Technical Field

[0001] This utility model relates to the field of thin film coating technology, specifically a release film coating device. Background Technology

[0002] The main function of uniformly coating the release agent on the film surface is to reduce the adhesion of the film surface and prevent the films from sticking together in the rolled state. When coating the film surface with release agent, a coating device is required.

[0003] A Chinese patent application with publication number CN 116213199 A discloses a release film coating device capable of single and double-sided coating, relating to the field of release film coating technology. The device includes a worktable, a drying oven, a feeding mechanism, a coating mechanism, and a winding mechanism. The worktable is equipped with the drying oven, feeding mechanism, coating mechanism, and winding mechanism. The feeding mechanism automatically feeds and fixes the release film rolls and can also feed the rolls into the discharge port. The coating mechanism allows for single and double-sided coating of the release film by adjusting the positions of coating cylinders one and two, thus broadening its application range. The winding mechanism automatically fixes rolls of different sizes and can rotate the rolls during coating to wind up the release film.

[0004] In existing coating equipment, the high-speed movement of the film during the application of release agent to the film surface can easily generate static electricity due to friction, which can cause dust to adhere to the film. Since it is difficult to efficiently remove the dust adsorbed on the film, the dust removal efficiency is poor, which affects the coating quality. Therefore, a release film coating device is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology, this utility model proposes a release film coating device.

[0006] The technical solution adopted by this utility model to solve its technical problem is a release film coating device, including a base, on which two sets of unwinding assemblies are installed. Two sets of guiding assemblies are installed between the two sets of unwinding assemblies, and a dust removal assembly and a curing assembly are installed between the two sets of guiding assemblies. A coating assembly is installed between the dust removal assembly and the curing assembly. The dust removal assembly includes a first support frame, on which a high-voltage power generator is installed. The high-voltage power generator is connected to an ion needle via a wire. The ion needle is fixedly installed on the first support frame. An installation block is installed on the side wall of the first support frame. An installation groove is formed in the installation block. A pulse electromagnet is fixedly installed on the inner wall of the installation groove. A vibrating block is slidably connected in the installation groove. An iron plate is installed on the top side of the vibrating block. A vibrating rod is fixedly installed on the wall, and a spring is installed between the vibrating block and the mounting groove. A PLC controller is installed on the side wall of the first support frame. The PLC controller is connected to a pulse electromagnet through an internal circuit. A high-voltage power generator conducts electricity to the ion needle, which performs high-voltage corona discharge to ionize the air into a large number of positive and negative ions. The ion needle comes into direct contact with the film, bringing a large number of positive and negative ions close to the surface of the film to neutralize static electricity, thus eliminating static electricity on the film. After the static electricity on the film is eliminated, the film passes over the vibrating rod, which generates a slight vibration. The slight vibration does not stretch the film, but it can quickly remove dust from the film, achieving efficient removal of dust adsorbed on the film. This is beneficial to improving the efficiency of dust removal and the quality of coating.

[0007] Preferably, the coating assembly includes a second support frame, which is fixedly mounted on a base. A roller is rotatably mounted on the second support frame. A first motor is mounted on the second support frame via a machine base. A coating roller is mounted on the output shaft of the first motor. A storage tank containing release agent is mounted on the base. A metering pump is mounted on the storage tank via a machine base. A first conduit and a second conduit are mounted on the metering pump. The first conduit penetrates the top plate of the storage tank and its opening is located at the bottom of the storage tank. The other end of the second conduit is connected to a coating box. The coating box is fixedly mounted on the side wall of the second support frame. A scraper is mounted on the side wall of the coating box. Two sets of guide assemblies are installed between the two sets of unwinding assemblies. A dust removal assembly and a curing assembly are installed between the two sets of guide assemblies. The unwinding assembly includes a third support frame, which is fixedly mounted on the base. A roller is rotatably mounted on the third support frame via a machine base. A second motor is mounted on the base, and an unwinding roller is mounted on the output shaft of the second motor. The unwinding roller is rotatably mounted on a third support frame, and an unwinding wheel is mounted on the unwinding roller. A film is wound on the unwinding wheel. The guiding assembly includes two mounting frames, on which a first guide wheel and a second guide wheel are rotatably mounted respectively. The curing assembly includes a fixing frame, on which multiple UV lamps are mounted. The UV lamps are connected to a PLC controller through an internal circuit. The release agent is applied to the film by a coating roller, and then a scraper removes excess release agent from the film, achieving uniformity and smoothness of the release agent. The film then moves to the UV lamps, where the UV lamps rapidly dry and cure the release agent through a photochemical reaction. The film then passes around a second set of first and second guide wheels and is finally wound up by a second set of unwinding assemblies. This structure can quickly dry the release agent on the film, which is beneficial to improving the efficiency of film winding.

[0008] The advantages of this utility model are:

[0009] 1. This invention uses a high-voltage power generator to conduct electricity to an ion needle. The ion needle performs high-voltage corona discharge, ionizing the air into a large number of positive and negative ions. The ion needle directly contacts the film, bringing a large number of positive and negative ions close to the surface of the film to neutralize static electricity, thus eliminating static electricity on the film. After the static electricity on the film is eliminated, the film passes through a vibrating rod, which generates slight vibration. The slight vibration does not stretch the film, but it can quickly remove dust from the film, achieving efficient removal of dust adsorbed on the film. This improves the efficiency of dust removal and enhances the quality of coating.

[0010] 2. This invention uses a coating roller to apply release agent to a film, followed by a scraper to remove excess release agent, achieving uniformity and smoothness of the release agent. The film then moves to a UV lamp, where the UV lamp rapidly dries and cures the release agent through a photochemical reaction. Afterward, the film passes around the second set of first and second guide rollers and is finally wound up by the second set of unwinding components. This structure allows for rapid drying of the release agent on the film, improving the efficiency of film winding. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a first-person perspective 3D structural diagram;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the dust removal component;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the vibrating rod.

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the coating component;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the unwinding assembly.

[0017] In the diagram: 1. Base; 2. First support frame; 201. PLC controller; 202. High-voltage power generator; 203. Ion needle; 204. Mounting block; 205. Mounting groove; 206. Pulse electromagnet; 207. Vibrating block; 208. Iron sheet; 209. Vibrating rod; 210. Spring; 3. Second support frame; 301. Roller; 302. First motor; 303. Coating roller; 304. Storage box; 305. Metering pump; 306. First conduit; 307. Second conduit; 308. Coating box; 309. Scraper; 4. Third support frame; 401. Second motor; 402. Unwinding roller; 403. Unwinding wheel; 404. Film; 5. First guide wheel; 501. Second guide wheel; 6. UV lamp. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-3 As shown, a release film coating apparatus includes a base 1, on which two sets of unwinding assemblies are mounted. Two sets of guiding assemblies are installed between the two sets of unwinding assemblies. A dust removal assembly and a curing assembly are installed between the two sets of guiding assemblies. A coating assembly is installed between the dust removal assembly and the curing assembly. The dust removal assembly includes a first support frame 2, on which a high-voltage power generator 202 is mounted. The high-voltage power generator 202 is connected to an ion needle 203 via a wire. The ion needle 203 is fixedly mounted on the first support frame 2. An mounting block 204 is mounted on the side wall of the first support frame 2. An mounting groove 205 is formed in the mounting block 204. A pulse electromagnet 206 is fixedly mounted on the inner wall of the mounting groove 205. A vibrating block 207 is slidably connected in the mounting groove 205. An iron sheet 208 is mounted on the top side of the vibrating block 207. A vibrating rod 209 is fixedly mounted on the side wall of the vibrating block 207. The vibrating block 207 and the mounting groove 204 are connected in a series of steps. A spring 210 is installed between 05. A PLC controller 201 is installed on the side wall of the first support frame 2. The PLC controller 201 is connected to the pulse electromagnet 206 through an internal circuit. During operation, when the existing coating device coats the release agent on the surface of the film 404, the high-speed movement of the film 404 easily generates static electricity due to friction, which easily causes dust to be adsorbed on the film 404. Since it is difficult to efficiently remove the dust adsorbed on the film 404, the efficiency of dust removal is poor, which affects the coating quality. After the film 404 is unwound by the first set of unwinding components, it will pass around the first guide wheel 5 and the second guide wheel 501 in sequence, and then be wound on the roller 301. The roller 301 is the coating area. Coating is carried out in the coating area. During the process of the film 404 moving to the coating area, the high-speed movement of the film 404 easily generates static electricity due to friction, and the film 404 is easily coated with dry, low-viscosity dust.

[0020] During the process of eliminating static electricity on the film 404, the switch of the high voltage power generator 202 (model ST401A) is turned on. The high voltage power generator 202 and the ion needle 203 are integrated into one structure. The ion needle 203 is the discharge terminal of the high voltage power generator 202. The high voltage power generator 202 conducts electricity to the ion needle 203. The ion needle 203 performs high voltage corona discharge to ionize the air into a large number of positive and negative ions. The ion needle 203 is in direct contact with the film 404, bringing a large number of positive and negative ions close to the surface of the film 404 to neutralize the static electricity, thus achieving the elimination of static electricity on the film 404.

[0021] After the static electricity on the thin film 404 is eliminated, a slight vibration can cause the dust on the thin film 404 to fall off. The dust then passes through the thin film 404 to the vibrating rod 209, and the PLC controller 201 transmits a sinusoidal current through a wire to the pulse electromagnet 206, magnetizing it. The sinusoidal current switches between positive and negative half-cycles. At the instant of each half-cycle switch, the sinusoidal current disappears. The frequency of the positive and negative half-cycle switching is very high, therefore the magnetic field frequency generated by the pulse electromagnet 206 is also very high. The magnetic force generated by the pulse electromagnet 206 is also instantaneous. This instantaneous magnetic force attracts the iron plate 208 towards the pulse electromagnet 206, causing the iron plate 208 to vibrate. Block 207 moves vertically upward, causing the vibrating block 207 to drive the vibrating rod 209 to move vertically upward as well. Then, the magnetic force disappears, and under the tension of spring 210, spring 210 pulls the vibrating block 207 vertically downward. The vibrating block 207 then drives the vibrating rod 209 vertically downward. Because the switching frequency of the magnetic field's occurrence and disappearance is extremely high, the vibrating rod 209 generates high-frequency vibration. Since the vibration range of the vibrating rod 209 is small, it generates slight vibration and will not stretch the film 404. However, this slight vibration can quickly remove dust from the film 404, achieving efficient removal of dust adsorbed on the film 404. This improves the efficiency of dust removal and enhances the quality of the coating.

[0022] Please see Figure 4-5As shown, the coating assembly includes a second support frame 3, which is fixedly mounted on a base 1. A roller 301 is rotatably mounted on the second support frame 3. A first motor 302 is mounted on the second support frame 3 via a base. A coating roller 303 is mounted on the output shaft of the first motor 302. A storage tank 304 is mounted on the base 1, containing release agent. A metering pump 305 is mounted on the storage tank 304 via a base. A first conduit 306 and a second conduit 307 are mounted on the metering pump 305. The first conduit 306 penetrates the top plate of the storage tank 304, and its opening is located at the top of the storage tank 304. At the bottom end of the second guide tube 307, the other end is connected to a coating box 308. The coating box 308 is fixedly installed on the side wall of the second support frame 3. A scraper 309 is installed on the side wall of the coating box 308. Two sets of guide components are installed between the two sets of unwinding components. A dust removal component and a curing component are installed between the two sets of guide components. The unwinding component includes a third support frame 4, which is fixedly installed on the base 1. A second motor 401 is installed on the third support frame 4 via a base. An unwinding roller 402 is installed on the output shaft of the second motor 401. The unwinding roller 402 is rotatably installed on the third support frame 4 for unwinding. A roll unwinding roller 403 is mounted on roller 402, and a film 404 is wound on the roll unwinding roller 403. The guiding assembly includes two mounting brackets, on which a first guide wheel 5 and a second guide wheel 501 are rotatably mounted respectively. The curing assembly includes a fixing bracket, on which multiple UV lamps 6 are mounted. The UV lamps 6 are connected to a PLC controller 201 through an internal circuit. During operation, existing coating devices have difficulty quickly drying the release agent on the surface of the film 404 during the coating process, resulting in poor efficiency in film 404 winding. The operation of the first set of unwinding components addresses this issue. The second motor 401 operates, driving the unwinding roller 402 to rotate. The unwinding roller 402 drives the unwinding wheel 403 to rotate. The unwinding wheel 403 loosens and releases the film 404. Similarly, the second unwinding assembly operates, with the unwinding roller 402 winding up the coated film 404. The programming logic controller in the PLC controller 201 controls the two second motors 401 to run synchronously at the same speed and direction by programming the same pulse output frequency and direction signals. Therefore, the synchronous operation of the two unwinding assemblies can keep the film 404 between the two unwinding assemblies always taut.

[0023] After the film 404 is unwound by the first set of unwinding components, it passes sequentially around the first set of first guide rollers 5 and second guide rollers 501, and then winds onto the roller 301. The roller 301 is the coating area. During the coating process in the coating area, the metering pump 305 operates, and the first conduit 306 draws the release agent from the bottom of the storage tank 304. Then, the metering pump 305 introduces the release agent from the second conduit 307 into the coating box 308, thus realizing the supply of release agent. The metering pump 305 is model EJ-B09. The metering pump 305 can perform conveying, metering and regulating functions, and has the characteristic of controllable flow. The metering pump 305 accurately measures and delivers the release agent, which can ensure stable supply.

[0024] The PLC controller 201 controls the operation of the first motor 302, which drives the coating roller 303 to rotate. When the coating roller 303 rotates into the coating box 308, it picks up the release agent. Then it rotates to the lower end of the roller 301 to apply the release agent onto the film 404, thus realizing the coating process of the film 404. Afterwards, the film 404 moves to the scraper 309, which scrapes off the excess release agent on the film 404, thus achieving the uniformity and smoothness of the release agent.

[0025] The film 404 then moves to the UV lamp 6, which is a CS5 model. The UV lamp 6 uses a photochemical reaction to quickly dry and cure the release agent, thus achieving rapid drying of the release agent. Afterward, the film 404 passes around the second set of first guide rollers 5 and second guide rollers 501, and is finally wound up by the second set of unwinding components. This structure can quickly dry the release agent on the film 404, which is beneficial to improving the efficiency of film 404 winding.

[0026] Working principle: In existing coating devices, during the coating of release agent onto the surface of film 404, the high-speed movement of film 404 easily generates static electricity due to friction, causing dust to adhere to the film 404. Because it is difficult to efficiently remove the dust adsorbed on film 404, the dust removal efficiency is poor, affecting the coating quality. After film 404 is unwound by the first unwinding assembly, it sequentially passes around the first guide wheel 5 and the second guide wheel 501, and then winds onto roller 301. Roller 301 is the coating area, where coating is performed. During the process of film 404 moving to the coating area, the high-speed movement of film 404 easily generates static electricity due to friction, which easily aids in drying. Low-viscosity dust; During the process of eliminating static electricity on the film 404, the switch of the high-voltage power generator 202 (model ST401A) is turned on. The high-voltage power generator 202 and the ion needle 203 are integrated. The ion needle 203 is the discharge terminal of the high-voltage power generator 202. The high-voltage power generator 202 conducts electricity to the ion needle 203, and the ion needle 203 performs high-voltage corona discharge to ionize the air into a large number of positive and negative ions. The ion needle 203 directly contacts the film 404, bringing a large number of positive and negative ions close to the surface of the film 404 to neutralize the static electricity, thus achieving the elimination of static electricity on the film 404; After the static electricity on the film 404 is eliminated, light Micro-vibration can dislodge dust from the diaphragm 404. The dust then passes through the diaphragm 404 and the vibrating rod 209. The PLC controller 201 transmits a sinusoidal current through a wire to the pulse electromagnet 206, magnetizing it. The sinusoidal current switches between positive and negative half-cycles. At the instant of this switching, the sinusoidal current disappears. The frequency of this switching is very high, resulting in a high-frequency magnetic field generated by the pulse electromagnet 206. The magnetic force generated by the pulse electromagnet 206 is also instantaneous. This instantaneous magnetic force attracts the iron plate 208 towards the pulse electromagnet 206, causing the vibrating block 207 to move vertically. As the magnetic field moves upward, the vibrating block 207 drives the vibrating rod 209 to move vertically upward. Then, the magnetic force disappears, and under the tension of the spring 210, the spring 210 pulls the vibrating block 207 to move vertically downward. The vibrating block 207 drives the vibrating rod 209 to move vertically downward. Because the switching frequency of the magnetic field's occurrence and disappearance is extremely high, the vibrating rod 209 generates high-frequency vibration. Since the vibration range of the vibrating rod 209 is small, the vibrating rod 209 generates slight vibration, which will not stretch the film 404. However, the slight vibration can make the dust on the film 404 fall off quickly, achieving efficient removal of the dust adsorbed on the film 404. This is beneficial to improving the efficiency of dust removal and the quality of coating.Existing coating equipment struggles to quickly dry the release agent on the film 404 during the coating process, resulting in poor efficiency in film 404 winding. The first unwinding assembly operates, with its second motor 401 driving the unwinding roller 402, which in turn drives the unwinding wheel 403 to unwind the film 404. Similarly, the second unwinding assembly operates, with its unwinding roller 402 winding the coated film 404. The programmable logic controller in the PLC controller 201 outputs the same pulse frequency through programming. The rate and direction signals control the two second motors 401 to run synchronously at the same speed and direction. Therefore, the two sets of unwinding assemblies operate synchronously, ensuring that the film 404 between the two sets of unwinding assemblies remains taut at all times. After the film 404 is unwound by the first set of unwinding assemblies, it passes sequentially around the first guide wheel 5 and the second guide wheel 501, and then winds onto the roller 301. The roller 301 is the coating area. During the coating process in the coating area, the metering pump 305 operates, and the first conduit 306 draws the release agent from the bottom of the storage tank 304. Then, the metering pump 305 pumps the release agent from the second conduit. The release agent is fed into the coating box 308 via a feeder 307. The metering pump 305 (model EJ-B09) performs conveying, metering, and regulating functions, and features controllable flow. It accurately meters and delivers the release agent, ensuring stable supply. The PLC controller 201 controls the first motor 302, which rotates the coating roller 303. When the coating roller 303 enters the coating box 308, it picks up the release agent. Afterward, it rotates to the lower end of the roller 301, coating the film 404 with the release agent, thus completing the coating process on the film 404. The film 404 then moves to the scraper 309, which removes excess release agent, ensuring uniformity and smoothness. Next, the film 404 moves to the UV lamp 6 (model CS5), which rapidly dries and cures the release agent through a photochemical reaction. The film 404 then passes around the second set of first guide rollers 5 and second guide rollers 501, and is finally wound up by the second set of unwinding components. This structure allows for rapid drying of the release agent on the film 404, improving the efficiency of film 404 winding.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A release film coating apparatus, characterized in that: The system includes a base (1), on which two sets of unwinding assemblies are mounted. Two sets of guiding assemblies are mounted between the two sets of unwinding assemblies. A dust removal assembly and a curing assembly are mounted between the two sets of guiding assemblies. A coating assembly is mounted between the dust removal assembly and the curing assembly. The dust removal assembly includes a first support frame (2), on which a high-voltage power generator (202) is installed. The high-voltage power generator (202) is connected to an ion needle (203) via a wire. The ion needle (203) is fixedly installed on the first support frame (2). An installation block (204) is installed on the side wall of the first support frame (2). An installation groove (205) is opened in the installation block (204). A pulse electromagnet (206) is fixedly installed on the inner wall of the installation groove (205). A vibration block (207) is slidably connected in the installation groove (205). An iron plate (208) is installed on the top side of the vibration block (207). A vibration rod (209) is fixedly installed on the side wall of the vibration block (207). A spring (210) is installed between the vibration block (207) and the installation groove (205).

2. The release film coating apparatus according to claim 1, characterized in that: A PLC controller (201) is installed on the side wall of the first support frame (2), and the PLC controller (201) is connected to the pulse electromagnet (206) through an internal circuit.

3. The release film coating apparatus according to claim 1, characterized in that: The coating assembly includes a second support frame (3), which is fixedly mounted on a base (1). A roller (301) is rotatably mounted on the second support frame (3). A first motor (302) is mounted on the second support frame (3) via a base. A coating roller (303) is mounted on the output shaft of the first motor (302).

4. The release film coating apparatus according to claim 1, characterized in that: A storage tank (304) is installed on the base (1). Release agent is placed in the storage tank (304). A metering pump (305) is installed on the storage tank (304) via a base. A first conduit (306) and a second conduit (307) are installed on the metering pump (305). The first conduit (306) penetrates the top plate of the storage tank (304) and its opening is located at the bottom of the storage tank (304).

5. The release film coating apparatus according to claim 4, characterized in that: The other end of the second conduit (307) is connected to a coating box (308), which is fixedly installed on the side wall of the second support frame (3), and a scraper (309) is installed on the side wall of the coating box (308).

6. The release film coating apparatus according to claim 1, characterized in that: Two sets of guide components are installed between the two sets of unwinding components. A dust removal component and a curing component are installed between the two sets of guide components. The unwinding component includes a third support frame (4). The third support frame (4) is fixedly installed on the base (1). A second motor (401) is installed on the third support frame (4) through a base. An unwinding roller (402) is installed on the output shaft of the second motor (401). The unwinding roller (402) is rotatably installed on the third support frame (4). An unwinding wheel (403) is installed on the unwinding roller (402). A film (404) is wound on the unwinding wheel (403). The guide component includes two mounting frames. A first guide wheel (5) and a second guide wheel (501) are rotatably installed on the two mounting frames respectively. The curing component includes a fixed frame. Multiple UV lamps (6) are fixedly installed on the frame. The UV lamps (6) are connected to the PLC controller (201) through an internal circuit.

Images