A protective film base film surface pretreatment and adhesion improvement device

Abstract

The application discloses a kind of protective film base film surface pretreatment and adhesion promotion device, it is related to protective film base film processing field, including machine body, the outside one side of the machine body is provided with gas supply mechanism, the inside bottom of the machine body is provided with cleaning mechanism, the inside of the machine body is provided with filter mechanism, the inside of the machine body is rotatably installed with corona roller, the inner wall of the machine body is fixedly installed with two groups of discharge assembly matched with corona roller.The auxiliary rod of the cleaning mechanism is misaligned arrangement, and the base film is bent and immersed in cleaning solution, and the rubber roller and the sponge roller are matched with the opposite operation to complete the double-sided deep cleaning of the base film, so that the surface dust, oil stains and other impurities can be completely removed, and then the two groups of discharge assembly are used to complete the graded corona activation, and then directional suction filter mechanism is matched with circulating air drying structure to realize the green and efficient operation of the pretreatment process, and the two groups of filter components can directional suction ozone and colloidal pollutants generated by corona treatment.

Description

Technical Field

[0001] This invention relates to the field of protective film base film processing, specifically to a protective film base film surface pretreatment and adhesion enhancement device. Background Technology

[0002] With the rapid development of industries such as electronics and information, optical display, automobile manufacturing, and packaging and printing, protective films, as the core carriers for surface protection and functional coating, are experiencing a continuous increase in market demand and increasingly higher product performance requirements. The base film of the protective film is the core substrate of the protective film product, and its surface adhesion is a key indicator that determines the stability of the coating bonding, the protective performance of the product, and its service life. Surface pretreatment is the core process for improving the surface adhesion of the base film.

[0003] Currently available protective film base film surface pretreatment devices continuously transport the base film to the corona treatment chamber via an unwinding mechanism. Inside the chamber, a corona roller drives the base film at a uniform speed. A high-voltage discharge component works in conjunction with the corona roller to generate a high-voltage corona discharge on the base film surface, thereby improving the adhesion performance of the base film surface. Some simple pretreatment devices will set up a single set of brush rollers or high-pressure air pipes before corona treatment to perform simple dust removal on the base film surface. After corona treatment, the base film is directly wound up by a winding mechanism or transported to the subsequent coating process. The entire pretreatment process mostly adopts a single-stage corona treatment mode, and the waste gas pollutants generated during the corona treatment process are mostly discharged uniformly through a terminal centralized pipeline.

[0004] During operation, existing pretreatment devices continuously generate pollutants such as ozone, low-molecular-weight colloidal volatiles, and dust particles detached from the base film surface during corona discharge. These pollutants directly settle on the surface of the base film after activation treatment, causing secondary pollution to the clean activation layer. This leads to a significant reduction in the adhesion enhancement effect on the base film surface, severely reducing product qualification rate and quality consistency. Furthermore, if the high concentration of ozone gas generated by corona discharge is directly emitted without effective filtration, it will seriously pollute the workshop production environment, and long-term exposure will harm the health of operators. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a protective film base film surface pretreatment and adhesion enhancement device to solve the technical problems of existing pretreatment devices where pollutants generated during corona discharge directly settle on the surface of the base film after activation treatment, causing secondary pollution to the clean activation layer, resulting in a significant reduction in the adhesion enhancement effect of the base film surface, and the high concentration of ozone gas generated by corona discharge being seriously polluted in the workshop production environment if it is directly emitted without effective filtration.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a protective film base film surface pretreatment and adhesion enhancement device, comprising a body, an air supply mechanism provided on one side of the outer side of the body, a cleaning mechanism provided at the bottom of the inner side of the body, a filtering mechanism provided inside the body, a corona roller rotatably mounted inside the body, two sets of discharge components cooperating with the corona roller fixedly mounted on the inner wall of the body, a protective film base film provided inside the body, the air supply mechanism comprising a fan, an air extraction end, an air blowing end, and an air drying port, wherein the air inlet end of the fan is connected to the filtering mechanism through the air extraction end, and the air outlet end of the fan is connected to the air drying port through the air blowing end, the cleaning mechanism comprising a cleaning chamber, a cleaning motor, a gear set, a drive shaft, a rubber roller, and a sponge roller, wherein the cleaning motor drives the drive shaft to rotate through the gear set, the rubber roller and the sponge roller are arranged in opposite directions and attached together, the filtering mechanism comprising a first filtering component and a second filtering component, wherein the first filtering component and the second filtering component are installed inside the body, and the corona roller is located between the first filtering component and the second filtering component.

[0007] By adopting the above technical solution, this invention uses staggered auxiliary rods in the cleaning mechanism to bend the base film and immerse it in the cleaning solution. Combined with opposing rubber rollers and sponge rollers, it achieves deep cleaning of both sides of the base film, thoroughly removing surface dust, oil, and other impurities. Then, two sets of discharge components complete graded corona activation, forming a uniform activation layer on the base film surface. This provides a clean surface foundation and sufficient surface activation effect for improving the adhesion of the base film from the source, significantly enhancing the adhesion and bonding stability of subsequent coatings. Subsequently, a directional suction filtration mechanism combined with a circulating air-drying structure achieves green and efficient operation of the pretreatment process. The two sets of filtration components can directionally suction ozone and colloidal pollutants generated by corona treatment. Graded filtration prevents secondary pollution of the clean base film by these pollutants. Simultaneously, the air supply mechanism uses the filtered clean gas and waste heat to form drying hot air, achieving simultaneous double-sided air drying of the cleaned base film. Overall, this improves the production efficiency, environmental friendliness, and finished product quality consistency of the protective film base film surface pretreatment.

[0008] Furthermore, the cleaning mechanism also includes a limiting block, an elastic element, a driven shaft, and a sprocket assembly. The limiting block is rotatably mounted on the outer wall of the drive shaft. The elastic element is connected between two opposing limiting blocks. The drive shaft is connected to the driven shaft via the sprocket assembly. The sponge roller is fixedly mounted on the outer wall of the driven shaft. The rubber roller is fixedly mounted on the outer wall of the drive shaft. The cleaning mechanism also includes a first auxiliary rod and a second auxiliary rod, wherein the first auxiliary rod and the second auxiliary rod are rotatably mounted inside the cleaning chamber with a staggered vertical alignment. This allows the protective film base film to be bent and pressed below the surface of the cleaning liquid in the cleaning chamber, ensuring that both sides of the protective film base film are in full contact with the cleaning liquid. At the same time, it provides tension and conveys the base film, preventing wrinkles from occurring during the transport of the base film.

[0009] By adopting the above technical solution, the protective film base film enters the cleaning chamber through the opening at the top of the cleaning chamber. The cleaning chamber has been pre-filled with cleaning fluid, which can clean some dirt on the surface of the protective film base film. After the protective film base film enters the cleaning chamber, under the action of the second auxiliary rod and the first auxiliary rod, the protective film base film will be immersed in the cleaning fluid, so that both sides of the protective film base film will come into contact with the cleaning fluid.

[0010] Furthermore, the cleaning motor drives two sets of drive shafts to rotate synchronously in opposite directions via a gear set, causing the rubber roller and sponge roller to rotate in opposite directions, thus synchronously wiping and cleaning both sides of the protective film base film. The elastic element can drive the limiting block to keep the sponge roller in contact with the rubber roller, thereby squeezing out the cleaning liquid inside the sponge roller. The lower half of the sponge roller is always immersed in the cleaning liquid in the cleaning chamber. When the sponge roller rotates, it can continuously absorb the cleaning liquid, forming a wet wipe on the surface of the protective film base film, removing dust, oil and other impurities from the surface of the base film, and providing a clean base film surface for subsequent corona pretreatment.

[0011] By adopting the above technical solution, after the cleaning motor is powered on, its output end will rotate, causing the two sets of drive shafts to rotate in opposite directions through the gear set. The two sets of driven shafts are driven by the sprocket set installed inside the limiting block. When the drive shaft is driven to rotate, the two sets of driven shafts will rotate synchronously with the drive shaft. Since the rotation directions of the two sets of drive shafts are opposite, the rotation directions of the two sets of driven shafts are also opposite. The water level of the cleaning liquid inside the cleaning chamber is in the lower half of the sponge roller. In this way, the lower half of the sponge roller will always be immersed in the cleaning liquid when it rotates. Then, as the sponge roller rotates, it will wipe both sides of the protective film base film to ensure the cleanliness of the surface of the protective film base film. Afterwards, in the contact area between the sponge roller and the rubber roller, the rubber roller will squeeze the sponge roller, which can squeeze out the cleaning liquid contained inside the rubber roller and make it fall into the cleaning chamber.

[0012] Furthermore, the filtration mechanism also includes an air intake, a first filter layer, and a second filter layer. The air intake is located at both ends of the top of the first filter assembly. The first filter layer is fixedly installed inside the first filter assembly, and the second filter layer is fixedly installed inside the second filter assembly. This allows for graded filtration of waste gas impurities such as ozone and colloidal pollutants generated during corona treatment, preventing secondary pollution of the treated base film surface by pollutants. The first filter assembly is fixedly installed below the corona roller, with its top air intake facing the contact area between the protective film base film and the corona roller. The second filter assembly is fixedly installed between the two sets of discharge assemblies, allowing for directional suction of pollutants generated in different areas during the corona treatment process.

[0013] By adopting the above technical solution, the fan will draw air from the first filter component and the second filter component through the air extraction end when it is working. At this time, the high-temperature pollutants generated by the corona discharge will be extracted. The pollutants between the two sets of discharge components will be drawn away by the second filter component. The first filter layer and the second filter layer can filter the pollutants.

[0014] Furthermore, the air drying ports are symmetrically arranged at the top of the cleaning mechanism. The fan can send the filtered clean gas into the air drying ports through the blowing end to form an upward and downward airflow, which simultaneously dries the cleaned protective film base film on both sides, ensuring that the surface of the base film is completely dry before entering the corona treatment area.

[0015] By adopting the above technical solution, the filtered pure gas is passed through a fan and then transported to two sets of drying ports through the blowing end. The gas with a certain temperature dries the protective film base film that has just come out of the cleaning mechanism.

[0016] Furthermore, the two sets of discharge components are arranged sequentially along the conveying direction of the protective film base film. The discharge component near the feed end is used for pre-corona activation of the protective film base film, and the discharge component near the discharge end is used for main corona treatment of the base film. Through graded corona treatment, a uniform activation layer is formed on the surface of the base film, which greatly improves the adhesion of the subsequent coating on the base film. The air supply mechanism, cleaning mechanism, filtration mechanism, corona roller and discharge components form a closed-loop continuous processing system. The cleaning mechanism performs pre-cleaning and decontamination of the base film, and the air supply mechanism uses the residual heat of the filtered clean exhaust gas to form hot air for drying. The pollutants generated during the corona treatment are drawn and filtered by the filtration mechanism in real time, realizing the integrated continuous operation of base film cleaning, drying, activation and exhaust gas purification, while avoiding secondary pollution of the clean base film by corona pollutants, and steadily improving the pretreatment effect and adhesion of the base film surface.

[0017] By adopting the above technical solution, the external conveying device transports the protective film base film to the inlet of the machine. Through multiple sets of auxiliary rollers installed inside the machine, the protective film base film is first cleaned by the cleaning mechanism inside the machine, and then air-dried before reaching the position of the corona roller. The corona roller is first operated to rotate by the control module, and then two sets of discharge components discharge to pre-treat the surface of the protective film base film. One set of discharge components first pre-corona treats the surface of the protective film base film, and then the other set performs corona treatment on the protective film base film. The pollutants generated during the corona treatment are extracted and filtered out by the filtration mechanism to avoid contaminating the surface of the corona-treated protective film base film. Finally, the protective film base film is conveyed to the outlet of the machine by the auxiliary rollers and transported to the next process by the external conveying device.

[0018] In summary, the present invention has the following beneficial effects: The present invention uses staggered auxiliary rods in the cleaning mechanism to bend the base film and immerse it in the cleaning solution. Combined with opposing rubber rollers and sponge rollers, it achieves deep cleaning of both sides of the base film, thoroughly removing surface dust, oil, and other impurities. Then, two sets of discharge components complete graded corona activation, forming a uniform activation layer on the base film surface. This provides a clean surface foundation and sufficient surface activation effect for improving the adhesion of the base film from the source, significantly enhancing the adhesion and bonding stability of subsequent coatings. Subsequently, a directional suction filtration mechanism combined with a circulating air-drying structure achieves green and efficient operation of the pretreatment process. The two sets of filtration components can directionally suction ozone and colloidal pollutants generated by corona treatment. Graded filtration prevents secondary pollution of the clean base film by these pollutants. Simultaneously, the air supply mechanism utilizes the filtered clean gas and waste heat to form drying hot air, achieving simultaneous double-sided air drying of the cleaned base film. Overall, this improves the production efficiency, environmental friendliness, and finished product quality consistency of the protective film base film surface pretreatment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a cross-sectional view from a first perspective of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A;

[0022] Figure 4 This is a cross-sectional view from a second perspective of the present invention;

[0023] Figure 5 This is a first-view structural schematic diagram of some parts of the present invention;

[0024] Figure 6 This is a second-view structural schematic diagram of some parts of the present invention;

[0025] Figure 7 This is a schematic diagram of the cleaning mechanism of the present invention;

[0026] Figure 8 For the present invention Figure 7 Enlarged view of point B;

[0027] Figure 9 This is a schematic diagram of the structure of a partial part of the present invention;

[0028] Figure 10 For the present invention Figure 8 Enlarged view of point C.

[0029] In the diagram: 1. Body; 2. Air supply mechanism; 201. Fan; 202. Air extraction end; 203. Air blowing end; 204. Air drying port; 3. Cleaning mechanism; 301. Cleaning chamber; 302. Cleaning motor; 303. Gear set; 304. Drive shaft; 305. Limiting block; 306. Rubber roller; 307. Sponge roller; 308. Elastic element; 309. First auxiliary rod; 310. Second auxiliary rod; 311. Driven shaft; 312. Sprocket set; 4. Filtration mechanism; 401. First filter assembly; 402. Second filter assembly; 403. Air intake port; 404. First filter layer; 405. Second filter layer; 5. Corona roller; 6. Discharge assembly; 7. Protective film base film. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The embodiments of the present invention will now be described.

[0032] A protective film base film surface pretreatment and adhesion enhancement device, such as Figure 1-10 As shown, it includes a body 1, an air supply mechanism 2 is provided on one side of the exterior of the body 1, a cleaning mechanism 3 is provided at the bottom of the interior of the body 1, a filter mechanism 4 is provided inside the body 1, a corona roller 5 is rotatably installed inside the body 1, two sets of discharge components 6 that cooperate with the corona roller 5 are fixedly installed on the inner wall of the body 1, and a protective film base film 7 is provided inside the body 1.

[0033] The external conveying device transports the protective film base film 7 to the feed port of the machine body 1. Through multiple sets of auxiliary rollers set inside the machine body 1, the protective film base film 7 is first cleaned by the cleaning mechanism 3 inside the machine body 1, and then air-dried to the position of the corona roller 5. The corona roller 5 is first operated to rotate by the control module, and then two sets of discharge components 6 will discharge to pre-treat the surface of the protective film base film 7. One set of discharge components 6 first pre-corona treats the surface of the protective film base film 7, and then the other set performs corona treatment on the protective film base film 7. The pollutants generated during the corona treatment are extracted and filtered out by the filter mechanism 4 to avoid contaminating the surface of the corona-treated protective film base film 7. Finally, the protective film base film 7 is conveyed to the discharge port of the machine body 1 by the auxiliary rollers and transported to the next process by the external conveying device.

[0034] Furthermore, the air supply mechanism 2 includes a fan 201, an air extraction end 202, an air blowing end 203, and an air drying port 204. The air inlet of the fan 201 is connected to the filter mechanism 4 through the air extraction end 202, and the air outlet of the fan 201 is connected to the air drying port 204 through the air blowing end 203. The cleaning mechanism 3 includes a cleaning chamber 301, a cleaning motor 302, a gear set 303, a drive shaft 304, a rubber roller 306, and a sponge roller 307. The cleaning motor 302 drives the drive shaft 304 to rotate through the gear set 303. The rubber roller 306 and the sponge roller 307 are arranged in opposite directions and attached together. The filter mechanism 4 includes a first filter component 401 and a second filter component 402. The first filter component 401 and the second filter component are installed inside the body 1. The corona roller 5 is located between the first filter component 401 and the second filter component 402.

[0035] In the example, the cleaning mechanism 3 also includes a limiting block 305, an elastic element 308, a driven shaft 311, and a sprocket set 312. The limiting block 305 is rotatably mounted on the outer wall of the drive shaft 304. The elastic element 308 is connected between two sets of opposing limiting blocks 305. The drive shaft 304 is connected to the driven shaft 311 via the sprocket set 312. The sponge roller 307 is fixedly mounted on the outer wall of the driven shaft 311. The rubber roller 306 is fixedly mounted on the outer wall of the drive shaft 304. The cleaning mechanism 3 also includes a first auxiliary rod 309 and a second auxiliary rod 310. The first auxiliary rod 309 and the second auxiliary rod 310 are rotatably mounted inside the cleaning chamber 301 with a staggered vertical position. They can bend and press the protective film base film 7 into the cleaning liquid below the surface of the cleaning liquid in the cleaning chamber 301, so that both sides of the protective film base film 7 are in full contact with the cleaning liquid. At the same time, the base film is tensioned and conveyed to avoid wrinkles during the conveying process.

[0036] The protective film base film 7 enters the cleaning chamber 301 through the opening at the top of the cleaning chamber 301. The cleaning chamber 301 has been pre-filled with cleaning fluid, which can clean some dirt on the surface of the protective film base film 7. After the protective film base film 7 enters the cleaning chamber 301, under the action of the second auxiliary rod 310 and the first auxiliary rod 309, the protective film base film 7 will be immersed in the cleaning fluid, so that both sides of the protective film base film 7 will be in contact with the cleaning fluid.

[0037] In the example, the cleaning motor 302 drives two sets of drive shafts 304 to rotate synchronously in opposite directions through the gear set 303, so that the rubber roller 306 and the sponge roller 307 rotate in opposite directions, forming a synchronous wiping and cleaning of both sides of the protective film base film 7. The elastic element 308 can drive the limiting block 305 to keep the sponge roller 307 in contact with the rubber roller 306, so as to squeeze out the cleaning liquid in the sponge roller 307. The lower half of the sponge roller 307 is always immersed in the cleaning liquid in the cleaning chamber 301. When the sponge roller 307 rotates, it can continuously absorb the cleaning liquid, forming a wet wiping on the surface of the protective film base film 7, removing dust, oil and other impurities from the base film surface, and providing a clean base film surface for subsequent corona pretreatment.

[0038] When the cleaning motor 302 is powered on, its output end rotates, causing the two sets of drive shafts 304 to rotate in opposite directions via the gear set 303. The two sets of driven shafts 311 are driven by the sprocket set 312 installed inside the limiting block 305. When the drive shaft 304 is driven to rotate, the two sets of driven shafts 311 rotate synchronously with it. Since the rotation directions of the two sets of drive shafts 304 are opposite, the rotation directions of the two sets of driven shafts 311 are also opposite. The cleaning chamber 301 is cleaned... The water level of the washing solution is in the lower half of the sponge roller 307. This way, the lower half of the sponge roller 307 will always be immersed in the washing solution when it rotates. Then, as the sponge roller 307 rotates, it will wipe both sides of the protective film base film 7 to ensure the cleanliness of the surface of the protective film base film 7. Afterwards, in the contact area between the sponge roller 307 and the rubber roller 306, the rubber roller 306 will squeeze the sponge roller 307, which can squeeze out the washing solution contained inside the rubber roller 306 and make it fall into the cleaning chamber 301.

[0039] In the example, the filtration mechanism 4 also includes an air intake 403, a first filter layer 404, and a second filter layer 405. The air intake 403 is located at both ends of the top of the first filter assembly 401. The first filter layer 404 is fixedly installed inside the first filter assembly 401, and the second filter layer 405 is fixedly installed inside the second filter assembly 402. This mechanism can perform graded filtration of waste gas impurities such as ozone and colloidal pollutants generated during corona treatment, thereby preventing secondary pollution of the treated base film surface by pollutants. The first filter assembly 401 is fixedly installed below the corona roller 5, and its top air intake 403 is directly facing the contact area between the protective film base film 7 and the corona roller 5. The second filter assembly 402 is fixedly installed between the two sets of discharge assemblies 6, which can directionally suck up pollutants generated in different areas during the corona treatment process.

[0040] When the fan 201 is working, it draws air from the first filter component 401 and the second filter component 402 through the air extraction end 202. At this time, the high-temperature pollutants generated by the corona discharge are extracted. The pollutants between the two sets of discharge components 6 are drawn away by the second filter component 402. The first filter layer 404 and the second filter layer 405 can filter the pollutants.

[0041] In the example, the air drying ports 204 are symmetrically arranged at the top of the cleaning mechanism 3. The fan 201 can send the filtered clean gas into the air drying ports 204 through the blowing end 203 to form an upward and downward airflow, which simultaneously dries the cleaned protective film base film 7 on both sides, ensuring that the surface of the base film is completely dry before entering the corona treatment area. The filtered pure gas is delivered to the two sets of air drying ports 204 through the fan 201 and then through the blowing end 203. The gas with a certain temperature dries the protective film base film 7 that has just come out of the cleaning mechanism 3.

[0042] In the example, two sets of discharge components 6 are arranged sequentially along the conveying direction of the protective film base film 7. The discharge component 6 near the feed end is used to pre-corona activate the protective film base film 7, and the discharge component 6 near the discharge end is used to perform main corona treatment on the base film. A uniform activation layer is formed on the surface of the base film through graded corona treatment, which greatly improves the adhesion of the subsequent coating of the base film.

[0043] As the protective film base film 7 continues to move, it will reach the area of ​​the corona roller 5 and the discharge assembly 6. One of the discharge assemblies 6 will pre-corona treat the surface of the protective film base film 7 in cooperation with the corona roller 5.

[0044] The working principle of this invention is as follows: When in use, the power is turned on, and the external conveying device will first transport the protective film base film 7 to the feed port of the machine body 1. Through the multiple sets of auxiliary rollers set inside the machine body 1, the protective film base film 7 can be cleaned by the cleaning mechanism 3 inside the machine body 1, and then dried before reaching the position of the corona roller 5.

[0045] After the device is started, the corona roller 5 will be rotated by the control module. Then, the two sets of discharge components 6 will discharge to pre-treat the surface of the protective film base film 7. One set of discharge components 6 will first pre-corona treat the surface of the protective film base film 7, and then the other set will corona treat the protective film base film 7. The pollutants generated during the corona treatment will be extracted and filtered out by the filter mechanism 4 to avoid contaminating the surface of the corona-treated protective film base film 7. Finally, the protective film base film 7 will be conveyed to the discharge port of the machine body 1 by the auxiliary roller and transported to the next process by the external conveying device.

[0046] When the protective film base film 7 first enters the body 1, it will first pass through the cleaning mechanism 3. The protective film base film 7 enters the cleaning chamber 301 through the opening at the top of the cleaning chamber 301. The cleaning chamber 301 has been pre-filled with cleaning fluid, which can clean some dirt on the surface of the protective film base film 7.

[0047] After the protective film base film 7 enters the cleaning chamber 301, under the action of the second auxiliary rod 310 and the first auxiliary rod 309, the protective film base film 7 will be immersed in the cleaning liquid, so that both sides of the protective film base film 7 will be in contact with the cleaning liquid.

[0048] The first auxiliary rod 309 is located at the bottom of one set of rubber rollers 306 and sponge rollers 307. Therefore, after the protective film base film 7 passes the first auxiliary rod 309, it will pass between the two sets of sponge rollers 307.

[0049] On one side of the outer side of the body 1, a cleaning motor 302 and a gear set 303 are installed. When the cleaning motor 302 is powered on, its output end will rotate. The teeth of the two sets of gears in the gear set 303 mesh with each other. One set of gears is fixedly connected to the output end of the cleaning motor 302, and both sets of gears are fixedly installed on one end of the two sets of drive shafts 304. Therefore, after the cleaning motor 302 is started, it causes the two sets of drive shafts 304 to rotate in opposite directions through the gear set 303.

[0050] The positions of the two sets of drive shafts 304 are both restricted on the cleaning chamber 301. On the outer wall of the drive shafts 304 in the inner area of ​​the cleaning chamber 301, a limiting block 305 is installed. Each pair of limiting blocks 305 is elastically connected by an elastic member 308. A cavity is opened inside the two sets of limiting blocks 305. The two sets of driven shafts 311 are driven by the drive shafts 304 through the sprocket set 312 installed inside the limiting block 305.

[0051] Therefore, when the drive shaft 304 is driven to rotate, the two driven shafts 311 will rotate synchronously with the drive shaft 304. Since the two drive shafts 304 rotate in opposite directions, the two driven shafts 311 also rotate in opposite directions.

[0052] A rubber roller 306 is installed on the outer wall of the drive shaft 304, and a sponge roller 307 is installed on the outer wall of the driven shaft 311. The water level of the cleaning fluid inside the cleaning chamber 301 is in the lower half of the sponge roller 307. In this way, the lower half of the sponge roller 307 will always be immersed in the cleaning fluid when it rotates. Then, as the sponge roller 307 rotates, it will wipe both sides of the protective film base film 7 to ensure the cleanliness of the surface of the protective film base film 7.

[0053] Then, in the contact area between the sponge roller 307 and the rubber roller 306, the rubber roller 306 will squeeze the sponge roller 307, which can squeeze out the cleaning liquid contained inside the rubber roller 306 and make it fall into the cleaning chamber 301.

[0054] The protective film base film 7 continues to be conveyed by the auxiliary roller, and two sets of drying ports 204 are set at the upper part of the outer side of the cleaning mechanism 3. The protective film base film 7 will pass between the two sets of drying ports 204. When the protective film base film 7 passes through, it will be dried by the air blown out of the drying port 204.

[0055] Then, the protective film base film 7 continues to move and will reach the area of ​​the corona roller 5 and the discharge component 6. One of the discharge components 6 will pre-corona treat the surface of the protective film base film 7 in cooperation with the corona roller 5. During the pre-corona treatment, various pollutants with temperature generated are absorbed by the filter mechanism 4.

[0056] On one side of the outer side of the body 1, an air supply mechanism 2 is installed. When the fan 201 is powered on, it will draw air from the air extraction end 202. The other end of the air extraction end 202 is divided into two sets of pipes, which are connected to the first filter component 401 and the second filter component 402 respectively.

[0057] Therefore, when the fan 201 is working, it will draw air from the first filter assembly 401 and the second filter assembly 402 through the air extraction end 202. At this time, the high-temperature pollutants generated by the corona discharge will be extracted. Among them, the pollutants between the two sets of discharge assemblies 6 will be extracted by the second filter assembly 402, while the pollutants generated between the protective film base film 7 and the corona roller 5 will be extracted by the first filter assembly 401 installed at the bottom of the corona roller 5. The two sets of air intake ports 403 opened at the top of the first filter assembly 401 will face the connection area between the protective film base film 7 and the corona roller 5.

[0058] Furthermore, a first filter layer 404 and a second filter layer 405 are installed inside the first filter assembly 401 and the second filter assembly 402 respectively, which can filter pollutants. The filtered pure gas is then transported to the two sets of drying ports 204 through the blower 201 and the blowing end 203. The gas with a certain temperature dries the protective film base film 7 that has just come out of the cleaning mechanism 3.

[0059] After being corona treated, the protective film base film 7 is then conveyed to the discharge port of the machine body 1 and then conveyed to the next process by the conveying device.

[0060] The above structure can solve the technical problems of existing pretreatment devices where pollutants generated during corona discharge directly settle on the surface of the newly activated base film, causing secondary pollution to the clean activated layer, resulting in a significant reduction in the adhesion enhancement effect of the base film surface, and the high concentration of ozone gas generated by corona discharge being seriously polluted in the workshop production environment if it is directly emitted without effective filtration.

[0061] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A protective film base film surface pre-treatment and adhesion enhancement device comprising a machine body (1), characterized in that: An air supply mechanism (2) is provided on one side of the exterior of the machine body (1), a cleaning mechanism (3) is provided at the bottom of the interior of the machine body (1), a filter mechanism (4) is provided inside the machine body (1), a corona roller (5) is rotatably installed inside the machine body (1), two sets of discharge components (6) that cooperate with the corona roller (5) are fixedly installed on the inner wall of the machine body (1), and a protective film base film (7) is provided inside the machine body (1). The air supply mechanism (2) includes a fan (201), an air intake end (202), an air blowing end (203), and an air drying port (204). The air intake end of the fan (201) is connected to the filter mechanism (4) through the air intake end (202), and the air outlet end of the fan (201) is connected to the air drying port (204) through the air blowing end (203). The cleaning mechanism (3) includes a cleaning chamber (301), a cleaning motor (302), a gear set (303), a drive shaft (304), a rubber roller (306), and... The sponge roller (307) is provided, wherein the cleaning motor (302) drives the drive shaft (304) to rotate through the gear set (303). The rubber roller (306) is attached to the sponge roller (307) in opposite directions. The filter mechanism (4) includes a first filter assembly (401) and a second filter assembly (402), wherein the first filter assembly (401) and the second filter assembly are installed inside the machine body (1). The corona roller (5) is located between the first filter assembly (401) and the second filter assembly (402).

2. The protective film base film surface pre-treatment and adhesion promotion device according to claim 1, characterized by: The cleaning mechanism (3) further includes a limiting block (305), an elastic element (308), a driven shaft (311), and a sprocket set (312). The limiting block (305) is rotatably mounted on the outer wall of the drive shaft (304). The elastic element (308) is connected between two sets of opposing limiting blocks (305). The drive shaft (304) is connected to the driven shaft (311) via the sprocket set (312). The sponge roller (307) is fixedly mounted on the outer wall of the driven shaft (311). The rubber roller (306) is fixedly mounted on the outer wall of the drive shaft (304).

3. The protective film base film surface pretreatment and adhesion enhancement device according to claim 1, characterized in that: The cleaning mechanism (3) also includes a first auxiliary rod (309) and a second auxiliary rod (310), wherein the first auxiliary rod (309) and the second auxiliary rod (310) are installed inside the cleaning chamber (301) with a staggered vertical rotation. They can bend the protective film base film (7) and press it into the cleaning liquid below the surface of the cleaning liquid in the cleaning chamber (301), so that both sides of the protective film base film (7) are in full contact with the cleaning liquid. At the same time, the base film is tensioned and transported to avoid wrinkles during the transport of the base film.

4. The protective film base film surface pretreatment and adhesion enhancement device according to claim 2, characterized in that: The cleaning motor (302) drives two sets of drive shafts (304) to rotate synchronously in opposite directions through the gear set (303), so that the rubber roller (306) and the sponge roller (307) run in opposite directions, forming a synchronous wiping and cleaning of both sides of the protective film base film (7). The elastic element (308) can drive the limiting block (305) to drive the sponge roller (307) to always be in contact with the rubber roller (306), so as to squeeze out the cleaning liquid in the sponge roller (307).

5. The protective film base film surface pretreatment and adhesion enhancement device according to claim 2, characterized in that: The lower half of the sponge roller (307) is always immersed in the cleaning solution in the cleaning chamber (301). When the sponge roller (307) rotates, it can continuously absorb the cleaning solution, forming a wet wipe on the surface of the protective film base film (7), removing dust, oil and other impurities from the base film surface, and providing a clean base film surface for subsequent corona pretreatment.

6. The protective film base film surface pretreatment and adhesion enhancement device according to claim 1, characterized in that: The filtration mechanism (4) further includes an air intake (403), a first filter layer (404), and a second filter layer (405). The air intake (403) is located at both ends of the top of the first filter assembly (401). The first filter layer (404) is fixedly installed inside the first filter assembly (401), and the second filter layer (405) is fixedly installed inside the second filter assembly (402). It can perform graded filtration of waste gas impurities such as ozone and colloidal pollutants generated by corona treatment, and avoid secondary pollution of the treated base membrane surface by pollutants.

7. The protective film base film surface pretreatment and adhesion enhancement device according to claim 6, characterized in that: The first filter assembly (401) is fixedly installed below the corona roller (5), and its top air inlet (403) is directly opposite the contact area between the protective film base film (7) and the corona roller (5). The second filter assembly (402) is fixedly installed between the two sets of discharge assemblies (6), and can directionally suck up pollutants generated in different areas during the corona treatment process.

8. The protective film base film surface pretreatment and adhesion enhancement device according to claim 1, characterized in that: The air drying port (204) is symmetrically arranged on the top of the cleaning mechanism (3). The fan (201) can send the filtered clean gas into the air drying port (204) through the blowing end (203) to form an upward and downward airflow, and perform double-sided synchronous air drying on the cleaned protective film base film (7) to ensure that the surface of the base film is completely dry before entering the corona treatment area.

9. The protective film base film surface pretreatment and adhesion enhancement device according to claim 1, characterized in that: The two sets of discharge components (6) are arranged sequentially along the conveying direction of the protective film base film (7). The discharge component (6) near the feed end is used to pre-corona activate the protective film base film (7), and the discharge component (6) near the discharge end is used to perform main corona treatment on the base film. A uniform activation layer is formed on the surface of the base film through graded corona treatment, which greatly improves the adhesion of the subsequent coating of the base film.

10. The protective film base film surface pretreatment and adhesion enhancement device according to claim 1, characterized in that: The gas supply mechanism (2), cleaning mechanism (3), filtration mechanism (4), corona roller (5) and discharge component (6) form a closed-loop continuous processing system. The cleaning mechanism (3) performs pre-cleaning and decontamination of the base film, and the gas supply mechanism (2) uses the residual heat of the filtered clean exhaust gas to form hot air for drying. The pollutants generated during the corona treatment process are drawn and filtered in real time by the filtration mechanism (4), realizing the integrated continuous operation of base film cleaning, drying, activation and exhaust gas purification. At the same time, it avoids secondary pollution of the clean base film by corona pollutants and steadily improves the pretreatment effect and adhesion of the base film surface.

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