Anti-static silica gel protective film double-sided gluing device and gluing process thereof

Abstract

The invention discloses an anti-static silica gel protective film double-sided gluing device and a gluing process thereof, and relates to the technical field of silica gel protective film gluing, the anti-static silica gel protective film double-sided gluing device comprises a PLC control cabinet, and the rear surface of the PLC control cabinet is provided with a double-sided coating assembly and a guide assembly. When the coating device is used, the coating motor is started to drive the connecting shaft and the micro concave roller to rotate. The precision requirement of the micro concave roller is high, and glue can be accurately transferred. When the two micro-concave rollers rotate, glue can be filled into grooves in the surfaces of the micro-concave rollers, redundant glue is scraped off through the glue scraping plate, and then the glue is evenly coated on the two faces of the protective film at a time. And drying treatment is conducted through the first drying box and the second drying box, so that the anti-static glue is solidified, and finally winding is conducted through the winding mechanism. Under the action of the double-sided coating assembly, double micro-concave rollers are used for coating, and a multi-layer drying oven structure is used for coating and rolling, so that the double-sided adhesive tape coating efficiency is improved, a product is formed at one time, and the loss of a base material is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gluing of silicone protective films, in particular to a double-sided gluing device for an antistatic silicone protective film and a gluing process thereof. Background Art

[0002] Silicone protective film is a protective film with silicone as the main component. It has good adsorption and can be firmly attached to the surface of the object to be protected. The silicone material makes it soft and can adapt well to objects of various shapes. After being attached, it can effectively prevent the protected object from being damaged by scratches, pollution, water vapor erosion, etc. During the production and processing of silicone protective film, double-sided gluing is required. Double-sided gluing can make the protective film and the two sides of the protected object firmly adhere to ensure that it will not fall off or shift easily during use.

[0003] In the prior art, the coating method used in the double-sided gluing process of the silicone protective film is to apply the first coat first and then apply the second coat. For the silicone protective film that needs to have an antistatic function, multiple coats are required, with a maximum of four coats. Each coating requires the protective film substrate to be unwound and reeled. In this process, the substrate is easily deformed and damaged during multiple stretching and retracting processes, which increases substrate loss and reduces coating efficiency, seriously affecting production efficiency.

[0004] Therefore, we propose an anti-static silicone protective film double-sided gluing device and its gluing process to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-static silicone protective film double-sided gluing device and its gluing process, so as to solve the problem that the double-sided gluing process of the anti-static silicone protective film proposed in the above background technology requires multiple coatings, and the substrate needs to be unwound and rewound many times, which easily causes the substrate to be deformed and damaged during multiple stretching and rewinding processes, increases substrate loss, has low coating efficiency, and affects production efficiency.

[0006] To achieve the above object, the present invention provides the following technical solution: a double-sided gluing device for an anti-static silicone protective film, comprising a PLC control cabinet, a double-sided coating component and a guide component are arranged on the rear surface of the PLC control cabinet, and a limit protection component is arranged inside the double-sided coating component; The double-sided coating assembly includes an unwinding mechanism, a first drying box is arranged on the top of the unwinding mechanism, a second drying box is fixedly installed on the top of the first drying box, glue storage boxes are arranged on the outer surfaces of both sides of the unwinding mechanism, micro-concave rollers are movably embedded in the two glue storage boxes, connecting shafts are fixedly installed at both ends of the two micro-concave rollers, coating motors are installed on the front surfaces of the two glue storage boxes through auxiliary plates, material troughs are fixedly installed in the two glue storage boxes, two scrapers are fixedly installed on the inner walls of the two material troughs near the top, and multiple glue discharge holes are opened on the outer surfaces of the four scrapers.

[0007] Preferably, temperature sensors are provided on the outer surfaces of the two material troughs, heating troughs are opened inside the two material troughs, heating wires are provided inside the two heating troughs, and heat conducting plates are fixedly installed on the top surfaces of the two heating troughs.

[0008] Preferably, two second guide plates are arranged on the outer surfaces of the two first guide plates, two first fixing rods are fixedly installed between the two first guide plates and between the two second guide plates, three second fixing rods are fixedly installed between the two first guide plates and between the two second guide plates, the outer surfaces of the four first fixing rods are movably provided with first guide rollers, and the outer surfaces of the six second fixing rods are movably provided with second guide rollers.

[0009] Preferably, the limit protection assembly includes four limit plates, five mounting rods are fixedly installed on the outer surface of one side of the four limit plates, five adjacent mounting rods form a group, one end of the four groups of mounting rods are fixedly installed with a first annular scraper rubber sheet, and three limit blocks are fixedly installed on the inner walls of the four limit plates.

[0010] Preferably, a second annular scraper blade is arranged at the bottom of the four first annular scrapers, and three mounting shafts are fixedly mounted on the outer surface of one side of the four second annular scrapers, and each three adjacent mounting shafts of the twelve mounting shafts form a group, and one ends of the four groups of mounting shafts are respectively fixedly mounted on the front surface wall and the rear surface wall inside the two glue storage boxes, and the bottoms of the four limit plates are respectively in contact with the tops of the two glue storage boxes close to the front surface and the rear surface.

[0011] Preferably, drainage grooves are provided on the outer surfaces of the four connecting shafts, and limiting grooves are provided on the outer surfaces of the four connecting shafts near the drainage grooves. A winding mechanism is provided on the outer surface of one of the glue storage boxes, and two threaded grooves are provided on the tops of the two glue storage boxes near the front surface and the rear surface.

[0012] Preferably, each three adjacent limit blocks of the twelve limit blocks form a group, and the bottoms of the four groups of limit blocks are movably embedded in the four limit grooves, respectively. The inner walls of the four first annular scrapers and the four second annular scrapers are in contact with the inner walls of the four drainage grooves, respectively. Threaded holes are provided at the tops of the four limit plates near both sides, and bolts are threadedly embedded in the eight threaded holes, and the bottom ends of the eight bolts are threadedly embedded in the eight threaded grooves, respectively.

[0013] Preferably, the tops of the two glue storage boxes are provided with rotation grooves near the front surface and the rear surface, the outer surfaces of the four connecting shafts are movably embedded in the four rotation grooves, the output ends of the two coating motors are respectively fixedly connected to one end of two of the connecting shafts, the detection ends of the two temperature sensors are respectively fixedly penetrated into the interiors of the two heating grooves, the outer surfaces of the two micro-concave rollers are respectively movably embedded in the interiors of the two material troughs, the four scrapers are grouped into a group of two adjacent scrapers, and the outer surfaces of the two groups of scrapers are in contact with the outer surfaces of the two micro-concave rollers, respectively.

[0014] A double-sided gluing process for an anti-static silicone protective film comprises the following steps: The first step is to select a suitable silicone protective film substrate and ensure that the surface of the substrate is clean, dry, and free of impurities such as oil and dust. Then install the substrate on the unwinding device and pull one end of the substrate to bypass the guiding device and drying device, and finally fix it to the winding device. The second step is to prepare antistatic glue according to production needs and product performance requirements, and then transport the coating glue to the storage box of the glue coating equipment through the material pump equipment; The third step is to start the winding equipment, gluing equipment, drying equipment and winding equipment after setting the parameters; In the fourth step, the winding device performs the unwinding operation, and the substrate passes through the coating roller in the gluing device to evenly coat the glue on both sides of the substrate; The fifth step is to guide the substrate coated with the antistatic glue to the drying device through the guiding device for double drying to remove the solvent and moisture in the glue and solidify the glue; In the sixth step, the anti-static silicone protective film after drying is rolled up by a rolling device for subsequent storage and use.

[0015] Preferably, in the preparation of the antistatic glue in the second step, polyurethane glue is selected as the glue matrix, quaternary ammonium salt is used as the antistatic agent, and ethyl acetate is used as the solvent; Preparation steps: Step 1: Add the antistatic agent to the solvent and stir with a stirrer until the antistatic agent is completely dissolved to form a uniform solution; Step 2: Slowly add the dissolved antistatic agent solution into the glue matrix, stirring while adding to fully disperse the antistatic agent. The mass fraction of the antistatic agent in the glue is 0.5% to 5%; The third step: placing the stirred antistatic glue in a vacuum degassing device for degassing. The vacuum degree is generally set between -0.08MPa and -0.1MPa. The degassing time is 30 to 90 minutes to obtain an antistatic coating.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When in use, start the unwinding mechanism, the winding mechanism, the first drying box, the second drying box and the two coating motors. The unwinding mechanism performs the film unwinding operation, and the silicone protective film contacts the two micro-concave rollers through the guide assembly. Start the coating motor to drive the connecting shaft and the micro-concave rollers to rotate. The micro-concave rollers have high precision requirements and can accurately transfer glue. When the two micro-concave rollers rotate, the glue will fill the grooves on the surface of the micro-concave rollers. The excess glue is scraped off by the scraper, and then evenly coated on both sides of the protective film at one time. Drying treatment is carried out in the first drying box and the second drying box to solidify the anti-static glue, and finally reeling is carried out through the reeling mechanism. Under the action of the double-sided coating assembly, double micro-concave rollers are used for coating, and the multi-layer oven structure is used for coating and reeling, which improves the efficiency of double-sided adhesive coating, the product is formed in one time, and the substrate loss is reduced.

[0017] 2. When in use, as the micro-concave roller rotates, part of the glue will flow along the sides of the micro-concave roller, and then flow to the connecting shaft, and then flow into the drainage groove, to prevent the glue from continuing to flow along the outer surface of the connecting shaft to the outer surface of the glue storage box, causing the equipment to be dirty. At the same time, the first annular scraper blade and the second annular scraper blade cooperate to scrape the dispersed glue in the drainage groove together, and under the action of gravity, it drips into the material trough, thereby improving the utilization rate of glue and reducing waste.

[0018] 3. When in use, add the antistatic agent to the solvent to dissolve it to form a uniform solution, and then add it to the glue matrix to ensure that the antistatic agent is evenly dispersed in the glue, followed by a degassing treatment to obtain an antistatic coating. First, install the substrate on the unwinding device, and pull one end of the substrate to bypass the guiding device and the drying device, fix it to the winding device, and start each device. At this time, the winding device performs the unwinding operation, and the coating roller in the glue coating device evenly coats the glue on both sides of the substrate. The substrate coated with antistatic glue is guided to the drying device through the guiding device for double drying treatment to remove the solvent and moisture in the glue and solidify the glue. Finally, the antistatic silicone protective film after drying is rolled up by the winding device for subsequent storage and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1A first-angle stereoscopic view of a double-sided gluing device for an anti-static silicone protective film according to the present invention; Figure 2 A second-angle stereoscopic view of a double-sided gluing device for an anti-static silicone protective film according to the present invention; Figure 3 It is a structural unfolded stereoscopic diagram of a double-sided coating component in a double-sided gluing device for an anti-static silicone protective film of the present invention; Figure 4 It is a structural unfolded stereoscopic diagram of a guide component in a double-sided gluing device for an anti-static silicone protective film of the present invention; Figure 5 It is a schematic cross-sectional view of the structure of a glue storage box in a double-sided glue coating device for an antistatic silicone protective film according to the present invention; Figure 6 It is a schematic cross-sectional view of the structure of a material tank in a double-sided gluing device for an anti-static silicone protective film according to the present invention; Figure 7 It is a structural unfolded stereoscopic diagram of a position limiting protection component in a double-sided gluing device for an anti-static silicone protective film of the present invention; Figure 8 It is a perspective view of the structure of the first annular rubber scraper in a double-sided glue coating device for an anti-static silicone protective film of the present invention; Fig. 9 It is a schematic cross-sectional view of the structure of a connecting shaft in a double-sided gluing device for an antistatic silicone protective film according to the present invention; Fig.10 This is a structural unfolded stereoscopic diagram of a limit plate in a double-sided gluing device for an anti-static silicone protective film according to the present invention.

[0020] In the figure: 1. PLC control cabinet; 2. Double-sided coating assembly; 201. Unwinding mechanism; 202. First drying box; 203. Second drying box; 204. Glue storage box; 205. Micro-concave roller; 206. Connecting shaft; 207. Coating motor; 208. Material trough; 209. Glue scraper; 210. Glue discharge hole; 211. Temperature sensor; 212. Heating trough; 213. Heating wire; 214. Heat conducting plate; 215. Rotating trough; 216. Drainage trough; 217. Limiting trough; 21 8. Winding mechanism; 219. Threaded groove; 3. Guide assembly; 301. First guide plate; 302. Second guide plate; 303. First fixed rod; 304. Second fixed rod; 305. First guide roller; 306. Second guide roller; 4. Limit protection assembly; 401. Limit plate; 402. Mounting rod; 403. First annular scraper; 404. Limit block; 405. Second annular scraper; 406. Mounting shaft; 407. Threaded hole; 408. Bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Fig.10The present invention provides a technical solution: a double-sided gluing device for an antistatic silicone protective film, comprising a PLC control cabinet 1, a double-sided coating component 2 and a guide component 3 are arranged on the rear surface of the PLC control cabinet 1, and a limit protection component 4 is arranged inside the double-sided coating component 2; the double-sided coating component 2 comprises a reeling mechanism 201, a first drying box 202 is arranged on the top of the reeling mechanism 201, a second drying box 203 is fixedly installed on the top of the first drying box 202, glue storage boxes 204 are arranged on the outer surfaces of both sides of the reeling mechanism 201, micro-concave rollers 205 are movably embedded in the two glue storage boxes 204, and connecting shafts 206 are fixedly installed at both ends of the two micro-concave rollers 205, and the two glue storage boxes 20 4 are both provided with coating motors 207 through auxiliary plates, material troughs 208 are both fixedly installed inside the two glue storage boxes 204, two scrapers 209 are both fixedly installed near the top of the inner walls of the two material troughs 208, and a plurality of glue discharge holes 210 are provided on the outer surfaces of the four scrapers 209, temperature sensors 211 are provided on the outer surfaces of the two material troughs 208, heating troughs 212 are both provided inside the two material troughs 208, heating wires 213 are both provided inside the two heating troughs 212, and heat conducting plates 214 are both fixedly installed on the top surfaces of the two heating troughs 212, drainage grooves 216 are provided on the outer surfaces of the four connecting shafts 206, and the outer surfaces of the four connecting shafts 206 are provided near the drainage grooves. A limiting groove 217 is provided at each flow channel 216, a winding mechanism 218 is provided on the outer surface of one of the glue storage boxes 204, two thread grooves 219 are provided at the tops of the two glue storage boxes 204 near the front surface and the rear surface, a rotating groove 215 is provided at the tops of the two glue storage boxes 204 near the front surface and the rear surface, the outer surfaces of the four connecting shafts 206 are respectively movably embedded in the four rotating grooves 215, the output ends of the two coating motors 207 are respectively fixedly connected to one end of two of the connecting shafts 206, the detection ends of the two temperature sensors 211 are respectively fixedly penetrated into the interiors of the two heating grooves 212, and the outer surfaces of the two micro-concave rollers 205 are respectively movably embedded in the two material grooves 20 8, four scraper plates 209, each two adjacent scraper plates 209 form a group, the outer surfaces of the two groups of scraper plates 209 are in contact with the outer surfaces of the two micro-concave rollers 205 respectively, two second guide plates 302 are arranged on the outer surfaces of the two first guide plates 301, two first fixing rods 303 are fixedly installed between the two first guide plates 301 and between the two second guide plates 302, three second fixing rods 304 are fixedly installed between the two first guide plates 301 and between the two second guide plates 302, the outer surfaces of the four first fixing rods 303 are movably sleeved with first guide rollers 305, and the outer surfaces of the six second fixing rods 304 are movably sleeved with second guide rollers 306.

[0023] The working principle of this embodiment is as follows: when in use, antistatic glue is injected into both material troughs 208, the silicone protective film is installed on the unwinding roller of the unwinding mechanism 201, and then the silicone protective film is pulled to bypass the first guide roller 305 and the second guide roller 306, and pass through the first drying box 202 and the second drying box 203, and finally fixed on the winding roller of the winding mechanism 218, as shown in FIG. Figure 3 As shown. The unwinding mechanism 201, the winding mechanism 218, the first drying box 202, the second drying box 203 and the two coating motors 207 are started by the PLC control cabinet 1. The unwinding mechanism 201 performs the unwinding operation of the protective film, and is guided by the second guide roller 305 to the left micro-concave roller 205. After the coating motor 207 is started, the connecting shaft 206 connected to it is driven to rotate through its output end, and the micro-concave roller 205 is driven to rotate. The micro-concave roller 205 is a coating roller with tiny grooves on the surface. The size of these grooves is usually very small, generally at the micron level. The diameter of the micro-concave roller 205 is relatively small, and its surface accuracy requirements are very high, which can ensure the precise transfer of glue during the rotation process. When the bottom of the micro-concave roller 205 is immersed in the anti-static glue inside the material tank 208, the glue will fill the grooves on the surface of the micro-concave roller 205. As the micro-concave roller 205 rotates, the excess glue will be scraped off by the scraper 209, leaving only the glue in the groove, preventing the glue from overflowing to the area that does not need to be coated during the coating process, reducing the waste of glue. When the micro-concave roller 205 with glue contacts the silicone protective film, under a certain pressure, the glue in the groove will be evenly transferred to the substrate, thereby evenly coating one side of the silicone protective cover. Under the guidance of the first guide roller 305, the side of the silicone protective cover coated with antistatic glue moves to the first drying box 202, and the silicone protective cover is dried by the first drying box 202 to solidify the antistatic glue. Then, the silicone protective cover with one side of the glue solidified is rotated to the micro-concave roller 205 on the right side under the guidance of the first guide roller 305 and the second guide roller 306 on the right side. At this time, the other side of the silicone protective cover is coated with antistatic glue by the micro-concave roller 205 rotating on the right side, and the glue on the other side is dried by the second drying box 203, and finally rolled up by the winding mechanism 218. Under the action of the double-sided coating component 2, the anti-static silicone protective cover is evenly coated on both sides, so that the silicone protective cover can be coated with multiple layers in one pass. The protective film only needs to pass through the coating device once, which reduces the friction and stretching times with the equipment, and reduces the risk of substrate loss due to mechanical operation. At the same time, since multiple layers of coating can be completed at one time, the coating time is greatly shortened and the production efficiency is improved. The problem that the anti-static silicone protective film needs to be coated with multiple layers during the double-sided gluing process, and the substrate needs to be unwound and rewound multiple times, which easily causes the substrate to be deformed and damaged during multiple stretching and retracting processes, increases substrate loss, and has low coating efficiency, which affects production efficiency.

[0024] Embodiment 2: According to Figure 7 - Fig.10 As shown, a double-sided coating component 2 and a guide component 3 are arranged on the rear surface of the PLC control cabinet 1, and a limit protection component 4 is arranged inside the double-sided coating component 2. The limit protection component 4 includes four limit plates 401, and five mounting rods 402 are fixedly installed on the outer surface of one side of the four limit plates 401. Each five adjacent mounting rods 402 form a group of the multiple mounting rods 402. One end of each of the four groups of mounting rods 402 is fixedly installed with a first annular scraper rubber blade 403. Three limit blocks 404 are fixedly installed on the inner walls of the four limit plates 401. A second annular scraper rubber blade 405 is arranged at the bottom of each of the four first annular scrapers rubber blades 403. Three mounting shafts 406 are fixedly installed on the outer surface of one side of the four second annular scrapers rubber blades 405. Each three adjacent mounting shafts 406 form a group of twelve mounting shafts 406. One end of the four groups of mounting shafts 406 are respectively fixedly installed on the front wall and the rear wall inside the two glue storage boxes 204. The bottoms of the four limit plates 401 are respectively connected to the two The tops of the four glue storage boxes 204 are in contact with each other near the front surface and the rear surface, the outer surfaces of the four connecting shafts 206 are provided with drainage grooves 216, and the outer surfaces of the four connecting shafts 206 are provided with limiting grooves 217 near the drainage grooves 216. A winding mechanism 218 is set on the outer surface of one of the glue storage boxes 204, and two threaded grooves 219 are provided on the tops of the two glue storage boxes 204 near the front surface and the rear surface. The twelve limit blocks 404 are grouped into three adjacent limit blocks 404, and the bottoms of the four groups of limit blocks 404 are movably embedded in the four limit grooves 217 respectively. The inner walls of the four first annular scraping rubber sheets 403 and the four second annular scraping rubber sheets 405 are in contact with the inner walls of the four drainage grooves 216 respectively. The four limit plates 401 are provided with threaded holes 407 near the tops of the two sides, and the eight threaded holes 407 are threadedly embedded with bolts 408, and the bottom ends of the eight bolts 408 are threadedly embedded in the eight threaded grooves 219 respectively.

[0025] Working principle of this embodiment: When in use, the first annular scraper blade 403 and the second annular scraper blade 405 are both embedded in the drainage groove 216, and the inner walls of the first annular scraper blade 403 and the second annular scraper blade 405 are in contact with the inner wall of the drainage groove 216. The structures of the first annular scraper blade 403 and the second annular scraper blade 405 are as follows: Fig.10As shown, the two are engaged together. During the rotation of the micro-concave roller 205, the excess glue on the surface is scraped off by the scraper plate 209, and part of the glue will flow along the two ends of the micro-concave roller 205, and then flow to the connecting shaft 206. A drainage groove 216 is provided on the outer surface of the connecting shaft 206, so that the glue accidentally flowing on the connecting shaft 206 will flow into the drainage groove 216, and the glue is prevented from continuing to flow along the outer surface of the connecting shaft 206 to the outer surface of the glue storage box 204, which will not only cause glue waste, but also make the equipment dirty. At the same time, the connecting shaft 206 rotates inside the first annular scraper blade 403 and the second annular scraper blade 405. Through the cooperation of the first annular scraper blade 403 and the second annular scraper blade 405, the dispersed flowing glue in the drainage groove 216 can be scraped together, so that the glue is gathered and drips into the material trough 208 under the action of gravity, thereby improving the utilization rate of glue and reducing waste. The connection shaft 206 and the micro-concave roller 205 are limited by the cooperation of the limiting plate 401, the limiting block 404 and the limiting groove 217 to prevent deviation and affect the coating effect.

[0026] Embodiment 3: According to Figure 1 - Fig.10 As shown, a double-sided gluing process for an anti-static silicone protective film includes the following steps: the first step is to select a suitable silicone protective film substrate and ensure that the surface of the substrate is clean, dry, and free of impurities such as oil and dust, then install the substrate on the unwinding device, and pull one end of the substrate to make it bypass the guiding device and the drying device, and finally fix it to the winding device; the second step is to prepare anti-static glue according to production needs and product performance requirements, and then transport the coating glue to the material storage box of the gluing device through the material pump device; the third step is to start the winding device, the gluing device, the drying device and the winding device after setting the parameters; the fourth step is that the winding device performs the unwinding operation, and the substrate passes through the coating roller in the gluing device to evenly coat the glue on both sides of the substrate; the fifth step is to guide the substrate coated with the anti-static glue to the drying device through the guiding device, and perform double drying treatment to remove the solvent in the glue agent and moisture to solidify the glue; in the sixth step, the antistatic silicone protective film after drying is rolled up by a rolling device for subsequent storage and use, wherein the second step of preparing the antistatic glue is to select polyurethane glue as the glue matrix, quaternary ammonium salt as the antistatic agent, and ethyl acetate as the solvent; the first step of the production process: adding the antistatic agent to the solvent and stirring with a stirrer until the antistatic agent is completely dissolved to form a uniform solution; the second step: slowly adding the dissolved antistatic agent solution to the glue matrix, stirring while adding, so that the antistatic agent is fully dispersed, and the mass fraction of the antistatic agent in the glue is 0.5% to 5%; the third step: placing the stirred antistatic agent glue in a vacuum degassing device for degassing treatment, the vacuum degree is generally set between -0.08MPa and -0.1MPa, and the degassing time is 30 to 90 minutes to obtain an antistatic coating.

[0027] The working principle of this embodiment: when in use, select a suitable substrate to ensure that the substrate surface is clean, dry, free of impurities such as oil and dust, so as not to affect the adhesion of the glue. According to production requirements and product performance requirements, select glue with good viscosity and weather resistance. Then prepare glue, select a suitable glue matrix, such as acrylic glue, polyurethane glue, etc., according to the required viscosity, flexibility and other properties to determine; according to the product's antistatic performance requirements, the use environment and the compatibility with the glue matrix to select antistatic agents, such as cationic antistatic agents, anionic antistatic agents and non-ionic antistatic agents; according to the solubility of the glue matrix and the antistatic agent to select solvents, such as toluene, ethyl acetate, etc. When preparing glue, first, add the antistatic agent to the solvent in a certain proportion, use a stirrer to stir, the stirring speed is usually 200-500 rpm, and the stirring time is 30-60 minutes, until the antistatic agent is completely dissolved to form a uniform solution. Then slowly add the dissolved antistatic agent solution to the glue matrix, stirring while adding, and the stirring speed can be controlled at 300-800 rpm to ensure that the antistatic agent is evenly dispersed in the glue. The addition ratio is generally determined according to the antistatic performance requirements. Usually, the mass fraction of the antistatic agent in the glue is 0.5% to 5%. Then continue to stir the mixed glue for about 1-2 hours to fully disperse the antistatic agent. Finally, place the glue in a vacuum degassing device for degassing. The vacuum degree is generally set between -0.08MPa and -0.1MPa, and the degassing time is 30 to 90 minutes to remove the bubbles generated during the stirring process to obtain the antistatic glue. First, install the substrate on the unwinding device, and pull one end of the substrate to bypass the guiding device and the drying device and fix it with the winding device. Then the antistatic glue is transported to the storage box of the glue coating device through the material pump device, and the glue coating device is debugged, and the glue coating speed, pressure, glue amount and other parameters are adjusted to ensure that the glue can be evenly coated on the surface of the substrate. Then debug the unwinding equipment, drying equipment, guiding equipment and winding equipment. After setting the corresponding parameters, start the winding equipment, gluing equipment, drying equipment and winding equipment. At this time, the winding equipment performs the unwinding operation. The substrate passes through the coating roller in the gluing equipment to evenly coat the glue on both sides of the substrate. During the gluing process, it is necessary to keep the speed and pressure of gluing stable to avoid uneven glue thickness or local glue shortage. The substrate coated with anti-static glue is guided to the drying equipment through the guiding equipment for double drying to remove the solvent and moisture in the glue and solidify the glue. The drying temperature and time are adjusted according to factors such as the type of glue and coating thickness. The general temperature is between 60℃-100℃ and the time is about 1min-10min. Finally, the anti-static silicone protective film after drying is rolled up by the winding equipment for subsequent storage and use.

[0028] In the present invention, when in use, the unwinding mechanism 201, the rewinding mechanism 218, the first drying box 202, the second drying box 203 and the two coating motors 207 are started through the PLC control cabinet 1, and the unwinding mechanism 201 performs the protective film unwinding operation, and comes to the left micro-concave roller 205 under the guidance of the second guide roller 305. After the coating motor 207 is started, it drives the connecting shaft 206 and the micro-concave roller 205 to rotate. When the bottom of the micro-concave roller 205 is immersed in the anti-static glue inside the material tank 208, the glue will be filled into the groove on the surface of the micro-concave roller 205. As the micro-concave roller 205 rotates, the excess glue will be scraped off by the scraper 209, leaving only the glue in the groove. Under a certain pressure, the glue in the groove will be evenly transferred to the substrate, thereby evenly coating one side of the silicone protective cover. Under the guidance of the first guide roller 305, the side of the silicone protective cover coated with antistatic glue moves to the first drying box 202, and the silicone protective cover is dried by the first drying box 202 to solidify the antistatic glue. Then, the silicone protective cover after one side of the glue is solidified is guided by the first guide roller 305 and the second guide roller 306 on the right side, and rotates to the micro-concave roller 205 on the right side. At this time, the other side of the silicone protective cover is coated with antistatic glue by the micro-concave roller 205 rotating on the right side, and the glue on the other side is dried by the second drying box 203, and finally rolled up by the winding mechanism 218. Under the action of the double-sided coating component 2, the effect of uniform coating on both sides of the antistatic silicone protective cover is achieved, and multi-layer coating can be achieved in one pass, reducing the risk of substrate loss caused by mechanical operation. At the same time, since multi-layer coating can be completed at one time, the coating time is greatly shortened and the production efficiency is improved. During the rotation of the micro-concave roller 205, the excess glue on the surface is scraped off by the scraper 209, and part of the glue will flow along the two ends of the micro-concave roller 205, and then flow to the connecting shaft 206, and then flow to the drainage groove 216, so as to prevent the glue from continuing to flow along the outer surface of the connecting shaft 206 to the outer surface of the glue storage box 204, causing the equipment to be dirty. At the same time, the first annular scraper 403 and the second annular scraper 405 cooperate to scrape the dispersed flowing glue in the drainage groove 216 together, so that the glue is gathered and drips into the material trough 208 under the action of gravity, thereby improving the utilization rate of the glue and reducing waste.

[0029] The wiring diagram of the PLC control cabinet 1, coating motor 207, temperature sensor 211, heating wire 213, winding mechanism 218, unwinding mechanism 201, first drying box 202 and second drying box 203 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring layout of the PLC control cabinet 1, coating motor 207, temperature sensor 211, heating wire 213, winding mechanism 218, unwinding mechanism 201, first drying box 202 and second drying box 203 are no longer explained in detail.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-sided gluing device for an antistatic silicone protective film, comprising a PLC control cabinet (1), characterized in that: A double-sided coating component (2) and a guide component (3) are arranged on the rear surface of the PLC control cabinet (1), and a limit protection component (4) is arranged inside the double-sided coating component (2); The double-sided coating assembly (2) comprises an unwinding mechanism (201), a first drying box (202) is arranged on the top of the unwinding mechanism (201), a second drying box (203) is fixedly installed on the top of the first drying box (202), glue storage boxes (204) are arranged on the outer surfaces of both sides of the unwinding mechanism (201), micro-concave rollers (205) are movably embedded in the interior of the two glue storage boxes (204), connecting shafts (206) are fixedly installed at both ends of the two micro-concave rollers (205), coating motors (207) are installed on the front surfaces of the two glue storage boxes (204) through auxiliary plates, material troughs (208) are fixedly installed in the interior of the two glue storage boxes (204), two glue scraping plates (209) are fixedly installed on the inner walls of the two material troughs (208) near the top, and the outer surfaces of the four glue scraping plates (209) are provided with a plurality of glue discharge holes (210).

2. The double-sided gluing device for antistatic silicone protective film according to claim 1 is characterized in that: Temperature sensors (211) are provided on the outer surfaces of the two material troughs (208), heating troughs (212) are provided inside the two material troughs (208), heating wires (213) are provided inside the two heating troughs (212), and heat conducting plates (214) are fixedly mounted on the top surfaces of the two heating troughs (212).

3. The double-sided gluing device for antistatic silicone protective film according to claim 1 is characterized in that: The guide assembly (3) comprises two first guide plates (301), two second guide plates (302) are arranged on the outer surfaces of the two first guide plates (301), two first fixing rods (303) are fixedly installed between the two first guide plates (301) and between the two second guide plates (302), three second fixing rods (304) are fixedly installed between the two first guide plates (301) and between the two second guide plates (302), the outer surfaces of the four first fixing rods (303) are movably sleeved with first guide rollers (305), and the outer surfaces of the six second fixing rods (304) are movably sleeved with second guide rollers (306).

4. The double-sided gluing device for antistatic silicone protective film according to claim 1 is characterized in that: The position limiting protection assembly (4) comprises four position limiting plates (401), and five mounting rods (402) are fixedly mounted on the outer surface of one side of the four position limiting plates (401). Five adjacent mounting rods (402) of the plurality of mounting rods (402) form a group, and a first annular scraper rubber sheet (403) is fixedly mounted on one end of the four groups of mounting rods (402). Three position limiting blocks (404) are fixedly mounted on the inner walls of the four position limiting plates (401).

5. The double-sided gluing device for antistatic silicone protective film according to claim 4 is characterized in that: A second annular scraper (405) is disposed at the bottom of each of the four first annular scrapers (403); three mounting shafts (406) are fixedly mounted on one side outer surface of each of the four second annular scrapers (405); each of the twelve mounting shafts (406) comprises three adjacent mounting shafts (406) as a group; one end of each of the four groups of mounting shafts (406) is fixedly mounted on the front surface wall and the rear surface wall inside the two glue storage boxes (204), respectively; and the bottoms of the four limiting plates (401) are in contact with the tops of the two glue storage boxes (204) close to the front surface and the rear surface, respectively.

6. The double-sided gluing device for antistatic silicone protective film according to claim 5, characterized in that: The outer surfaces of the four connecting shafts (206) are each provided with a drainage groove (216), and the outer surfaces of the four connecting shafts (206) are each provided with a limiting groove (217) near the drainage groove (216); a winding mechanism (218) is provided on the outer surface of one of the glue storage boxes (204), and two thread grooves (219) are each provided on the top of the two glue storage boxes (204) near the front surface and the rear surface.

7. The double-sided gluing device for antistatic silicone protective film according to claim 6, characterized in that: Each of the twelve limit blocks (404) comprises three adjacent limit blocks (404) as a group, and the bottoms of the four groups of limit blocks (404) are movably embedded in the four limit grooves (217), respectively; the inner walls of the four first annular scrapers (403) and the four second annular scrapers (405) are in contact with the inner walls of the four drainage grooves (216), respectively; threaded holes (407) are provided at the tops of the four limit plates (401) near both sides, and bolts (408) are threadedly embedded in the eight threaded holes (407), and the bottom ends of the eight bolts (408) are threadedly embedded in the eight threaded grooves (219), respectively.

8. The double-sided gluing device for antistatic silicone protective film according to claim 7, characterized in that: The tops of the two glue storage boxes (204) are provided with rotation grooves (215) near the front surface and the rear surface, the outer surfaces of the four connecting shafts (206) are movably embedded in the four rotation grooves (215), the output ends of the two coating motors (207) are respectively fixedly connected to one end of two of the connecting shafts (206), the detection ends of the two temperature sensors (211) are respectively fixedly penetrated into the two heating grooves (212), the outer surfaces of the two micro-concave rollers (205) are respectively movably embedded in the two material grooves (208), and each adjacent two scraper plates (209) of the four scraper plates (209) form a group, and the outer surfaces of the two groups of scraper plates (209) are in contact with the outer surfaces of the two micro-concave rollers (205).

9. A double-sided gluing process for an anti-static silicone protective film, characterized in that: The steps include: The first step is to select a suitable silicone protective film substrate and ensure that the surface of the substrate is clean, dry, and free of impurities such as oil and dust. Then install the substrate on the unwinding device and pull one end of the substrate to bypass the guiding device and drying device, and finally fix it to the winding device. The second step is to prepare antistatic glue according to production needs and product performance requirements, and then transport the coating glue to the storage box of the glue coating equipment through the material pump equipment; The third step is to start the winding equipment, gluing equipment, drying equipment and winding equipment after setting the parameters; In the fourth step, the winding device performs the unwinding operation, and the substrate passes through the coating roller in the gluing device to evenly coat the glue on both sides of the substrate; The fifth step is to guide the substrate coated with the antistatic glue to the drying device through the guiding device for double drying to remove the solvent and moisture in the glue and solidify the glue; In the sixth step, the anti-static silicone protective film after drying is rolled up by a rolling device for subsequent storage and use.

10. The double-sided gluing process for the antistatic silicone protective film according to claim 9, characterized in that: In the second step, polyurethane glue is used as the glue matrix, quaternary ammonium salt is used as the antistatic agent, and ethyl acetate is used as the solvent in the preparation of the antistatic glue; Preparation steps: Step 1: Add the antistatic agent to the solvent and stir with a stirrer until the antistatic agent is completely dissolved to form a uniform solution; Step 2: Slowly add the dissolved antistatic agent solution into the glue matrix, stirring while adding to fully disperse the antistatic agent. The mass fraction of the antistatic agent in the glue is 0.5% to 5%; The third step: placing the stirred antistatic glue in a vacuum degassing device for degassing. The vacuum degree is generally set between -0.08MPa and -0.1MPa. The degassing time is 30 to 90 minutes to obtain an antistatic coating.

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