An integrated micro-concave slit multi-functional experimental coating machine

Abstract

This utility model belongs to the field of coating machine technology, specifically relating to an integrated micro-concave doctor blade slit multi-functional experimental coating machine, including a coating structure; the inner side of the coating structure is provided with a micro-concave coating mechanism, a slit coating mechanism, and a comma coating mechanism, with the micro-concave coating mechanism located at the bottom of the inner side of the coating structure, the comma coating mechanism located at the top of the inner side of the coating structure, and the slit coating mechanism located below the comma coating mechanism; the micro-concave coating mechanism coats the substrate using a micro-concave coating method, the slit coating mechanism coats the substrate using a slit coating method, and the comma coating mechanism coats the substrate using a comma doctor blade coating method. This utility model can comprehensively solve the needs of multiple types of coating processes, cover a wide range of different coating viscosities, adapt to diverse substrates, improve production efficiency and flexibility, and has dynamic process switching capabilities.

Description

Technical Field

[0001] This utility model belongs to the field of coating machine technology, specifically relating to an integrated micro-concave slit multi-functional experimental coating machine. Background Technology

[0002] A coating machine is an industrial device used to uniformly coat liquid or paste-like functional materials (such as adhesives, coatings, inks, etc.) onto the surface of a roll of substrate. After drying / curing, it is rolled up. Its key function is to impart special properties to the substrate (such as adhesion, protection, conductivity, optical properties, etc.). Typical substrates include paper, plastic film (PET / BOPP), fabric, aluminum foil, and leather.

[0003] Problems with existing technology: Common coating equipment on the market usually only has one coating method, and the equipment has a narrow range of coverage for coatings of different viscosities, making it impossible to take into account the problem of wide viscosity and multi-thickness coatings. In addition, it cannot adapt to a variety of substrates at the same time. When the substrate needs to be coated with multiple layers, the traditional step coating method requires frequent unwinding and rewinding, which is very time-consuming and results in low production capacity. Utility Model Content

[0004] The purpose of this invention is to provide an integrated micro-concave slit-type multi-functional experimental coating machine that can comprehensively solve the needs of various coating processes, cover a wide range of different coating viscosities, adapt to diverse substrates, improve production efficiency and flexibility, and has dynamic process switching capabilities.

[0005] The specific technical solution adopted by this utility model is as follows: An integrated micro-concave slit multifunctional experimental coating machine, including a coating structure; The coating structure is provided with a micro-recessed coating mechanism, a slit coating mechanism and a comma coating mechanism on its inner side. The micro-recessed coating mechanism is located at the bottom of the inner side of the coating structure, the comma coating mechanism is located at the top of the inner side of the coating structure, and the slit coating mechanism is located below the comma coating mechanism. The micro-recessed coating mechanism coats the substrate using a micro-recessed coating method, the slit coating mechanism coats the substrate using a slit coating method, and the comma coating mechanism coats the substrate using a comma-shaped scraper coating method.

[0006] It also includes a main control console, which is used to regulate the working process of the coating machine.

[0007] The coating structure includes a double-sided support frame; The inner sides of the double-sided uprights are sequentially assembled with guide roller one, guide roller two, and guide roller three from bottom to top.

[0008] The micro-grooving coating mechanism includes a feeding tank, and a micro-grooving roller is movably assembled on the inner side of the double-sided uprights, with the micro-grooving roller being embedded in the surface of the feeding tank.

[0009] The bottom of the double-sided uprights is horizontally adjustable and assembled with assembly frames on both sides, and the bottom ends of the two assembly frames are hinged together to assemble a sealing cavity scraper. The micro-concave roller rotates carrying the coating material inside the feed tank. After the excess coating material is scraped off by the scraper in the sealed cavity, the coating material is applied to the surface of the substrate.

[0010] Cylinder 2 is fixedly installed on the inner walls of both sides of the double-sided upright frame. The output shafts of cylinder 2 on both sides are connected to the connecting frame. The inner sides of the connecting frame on both sides are rotatably assembled with guide roller 4 and back roller 1 for guiding the transport of substrate.

[0011] The slit coating mechanism includes a back roller 2. Both sides of the inner wall of the double-sided upright are fixedly installed with fixed supports, and the top of the fixed supports is equipped with a track plate through a lifting adjustment mechanism. The surfaces of the track plates on both sides are slidably assembled with a slit die head. The slit die head is connected to a second coating extrusion mechanism, and the coating is extruded through the slit lip of the slit die head and coated on the surface of the substrate.

[0012] Force gauges are fixedly assembled on the bottom sides of both ends of the slit mold head, and support blocks are installed on the fixed support sidewalls at the positions corresponding to the force gauges.

[0013] The comma coating mechanism includes a feed tray and a comma-shaped scraper. The comma-shaped scraper is positioned above the second back roller; The coating inside the feed tray is applied to the substrate surface as the substrate passes through the gap between the feed tray and the second back roller, and the excess coating is scraped off by the comma scraper.

[0014] A second force gauge is fixedly installed at the end of the side frame, and a second support block is installed on the inner wall of the double-sided uprights at the position corresponding to the second force gauge.

[0015] The technical effects achieved by this utility model are as follows: The coating structure designed in this utility model includes a micro-recessed coating mechanism, a slit coating mechanism, and a comma coating mechanism, which can comprehensively solve the needs of multiple coating processes, cover a wide range of different coating viscosities, and adapt to diverse substrates. To improve production efficiency and flexibility, continuous production is adopted to reduce costs and increase efficiency. The substrate completes three coatings in a single pass (such as automotive film: adhesive layer → functional layer → protective layer), reducing the number of unwinding and rewinding operations in traditional step coating, and increasing production capacity by more than 30%. It also features dynamic process switching capabilities and, through modular design, allows for the shutdown of some coating heads according to product requirements (such as only enabling micro-concave + slit coating of ultra-thin optical films) without the need for mechanical replacement. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the experimental coating machine provided in an embodiment of this utility model; Figure 2 This is a front view structural diagram of the coating structure provided in an embodiment of this utility model; Figure 3 This is a rear view of the coating structure provided in an embodiment of the present invention; Figure 4 This is a structural disassembly diagram of the micro-recessed coating mechanism provided in an embodiment of this utility model; Figure 5 This is a structural diagram of the combination of the slit coating mechanism and the comma coating mechanism provided in the embodiment of this utility model; Figure 6 This is a structural diagram of the slit coating mechanism provided in an embodiment of the present invention; Figure 7 This is a structural disassembly diagram of the comma coating mechanism provided in an embodiment of this utility model; Figure 8 This is a simplified diagram illustrating the coating process of a substrate within a coating structure, as provided in an embodiment of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1. Main unwinding mechanism; 2. Coating structure; 21. Double-sided uprights; 22. First coating extrusion mechanism; 23. Guide roller one; 24. Guide roller two; 25. Guide roller three; 3. Micro-gravure coating mechanism; 301. Feed tank; 302. Micro-gravure roller; 303. Cylinder 1; 304. Servo motor 1; 305. Cylinder 2; 306. Connecting frame; 307. Guide roller 4; 308. Back roller 1; 309. Assembly frame; 310. Sealing cavity scraper; 311. Cylinder 3; 4. Slit coating mechanism; 401. Back roller II; 402. Servo motor II; 403. Fixed support; 404. Lifting and adjusting mechanism; 405. Track plate; 406. Slit die head; 407. Cylinder IV; 408. Receiving tray; 409. Force gauge I; 5. Comma coating mechanism; 501. Diagonal brace; 502. Feed tray; 503. Side frame; 504. Cylinder five; 505. Comma scraper; 506. Force gauge two; 507. Support block two; 6. Secondary unwinding mechanism; 7. Drying oven; 8. UV lamp; 9. Main winding mechanism; 10. Main control panel. Detailed Implementation

[0018] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0019] like Figures 1-8 As shown, an integrated micro-concave slit multi-functional experimental coating machine includes a coating structure 2. A main unwinding mechanism 1 and a secondary unwinding mechanism 6 are provided on one side of the bottom of the coating structure 2. A drying chamber 7 is provided on one side of the top of the coating structure 2. A UV lamp 8 is provided at the output end of the drying chamber 7, and a main winding mechanism 9 is provided at the bottom of the output end of the drying chamber 7. See attached document Figure 1 It also includes a main control console 10, which is used to regulate the working process of the coating machine.

[0020] See attached document Figure 3 The coating structure 2 includes a double-sided stand 21. The outer wall of one side of the double-sided stand 21 is provided with a first coating extrusion mechanism 22 for conveying coating to the micro-coating mechanism 3. The inner side of the double-sided stand 21 is rotatably assembled with guide roller 1 23, guide roller 24 and guide roller 3 25 from bottom to top.

[0021] According to the above structure, after the substrate roll is released by the main unwinding mechanism 1 or the second unwinding mechanism 6, it enters the coating structure 2 to complete the coating work, and then enters the drying oven 7 for drying. After being dried by electric heating and hot air heating, the roll passes through the UV lamp 8. The ultraviolet radiation of the UV lamp 8 triggers a photochemical reaction, realizing the instantaneous curing of the coating material. Finally, it is wound up at the main winding mechanism 9. The above process is based on the existing system and will not be described in detail here.

[0022] See attached document Figure 2 The coating structure 2 is provided with a micro-recessed coating mechanism 3, a slit coating mechanism 4 and a comma coating mechanism 5 on its inner side. The micro-recessed coating mechanism 3 is located at the bottom of the inner side of the coating structure 2, the comma coating mechanism 5 is located at the top of the inner side of the coating structure 2, and the slit coating mechanism 4 is located below the comma coating mechanism 5. See attached document Figure 4The micro-gravure coating mechanism 3 coats the substrate using a micro-gravure coating method. The micro-gravure coating mechanism 3 includes a feeding tank 301, which is fixedly assembled on the inner side of the double-sided support frame 21. A micro-gravure roller 302 is movably assembled on the inner side of the double-sided support frame 21, and the micro-gravure roller 302 is embedded in the surface of the feeding tank 301. A servo motor 304 for driving the micro-gravure roller 302 to rotate is provided on the outer wall of one end of the double-sided support frame 21. Cylinders 303 for adjusting the height of the micro-gravure roller 302 are installed on both sides of the bottom inner wall of the double-sided support frame 21.

[0023] The bottom of the double-sided upright frame 21 is horizontally adjustable and assembled with two assembly frames 309. The bottom ends of the two assembly frames 309 are hinged together to assemble a sealing cavity scraper 310. The inner side of each assembly frame 309 is equipped with a cylinder 311 whose output shaft is hinged to the sealing cavity scraper 310. The cylinder 311 is used to finely adjust the gap between the sealing cavity scraper 310 and the micro-concave roller 302 by adjusting the angle of the sealing cavity scraper 310. The micro-concave roller 302 rotates carrying the coating material inside the feed tank 301. After the excess coating material is scraped off by the scraper 310 in the sealed cavity, the coating material is applied to the surface of the substrate.

[0024] Cylinder 2 305 is fixedly installed on the inner walls of both sides of the double-sided upright frame 21. The output shafts of cylinder 2 305 on both sides are connected to the connecting frame 306. The inner sides of the connecting frame 306 on both sides are rotatably assembled with guide roller 4 307 and back roller 1 308 for guiding the transport of substrate.

[0025] Based on the above structure, after the substrate enters the coating structure 2, as shown in the attached... Figure 8 As shown, the micro-gravure coating mechanism 3 is guided by guide roller 23 for micro-gravure coating. The feed tank 301 is filled with coating material that can adhere to the surface of the micro-gravure roller 302. The micro-gravure roller 302 can be raised and lowered by cylinder 303 to control the contact between the micro-gravure roller 302 and the substrate, so that the coating material on the surface of the micro-gravure roller 302 can be coated onto the surface of the substrate, thereby completing the coating work. During the process, the sealing cavity scraper 310 can scrape off excess coating material on the surface of the micro-gravure roller 302. The output shaft of cylinder 311 is connected to the sealing cavity scraper 310, and the rotation of the sealing cavity scraper 310 can be controlled to adjust the gap between the scraper and the surface of the micro-gravure roller 302.

[0026] See attached document Figure 5 and Figure 6The slit coating mechanism 4 coats the substrate using a slit coating method. The slit coating mechanism 4 includes a back roller 401, which is rotatably assembled on the top of the inner side of the double-sided support 21. A servo motor 402 for driving the back roller 401 to rotate is provided on the outer wall of one end of the double-sided support 21. Fixed supports 403 are fixedly installed on both sides of the inner wall of the double-sided support 21. A track plate 405 is mounted on the top of the fixed support 403 through a lifting adjustment mechanism 404. A slit die head 406 is slidably assembled on the surface of the track plates 405 on both sides. A cylinder 407 for adjusting the gap between the slit die head 406 and the back roller 401 is installed on one end of each track plate 405. A second coating extrusion mechanism is connected to the slit die head 406. A receiving tray 408 is fixedly assembled on the inner side of the fixed supports 403 on both sides and below the slit die head 406. The coating is extruded through the slit lip of the slit die head 406 and coated on the surface of the substrate.

[0027] Force gauge 409 is fixedly assembled on the bottom side of both ends of the slit mold head 406, and a support block is installed on the side wall of the fixed support 403 at the position corresponding to the force gauge 409.

[0028] According to the above structure, after the substrate leaves the micro-gravure coating mechanism 3, it is guided by guide roller 24 and guide roller 3 25 to back roller 2 401. During the process, cylinder 407 operates to bring the slit die 406 close to back roller 2 401. The second coating extrusion mechanism injects coating into the cavity inside the slit die 406. After slit extrusion, it is sprayed out at the lip and finally coated on the surface of the substrate. The height of the slit die 406 can be adjusted by lifting and lowering adjustment mechanism 404. When the slit die 406 is close to back roller 2 401, the measuring end of the force gauge 409 just contacts the bearing block 1, which can indirectly measure the squeezing force of the slit die 406 on the substrate.

[0029] See attached document Figure 5 and Figure 7 The comma coating mechanism 5 uses a comma scraper coating method to coat the substrate. The comma coating mechanism 5 includes a feed tray 502 and a comma scraper 505. Both sides of the inner wall of the top of the double-sided upright frame 21 are fixedly installed with diagonal braces 501. The feed tray 502 is adjustablely fixedly installed on the inner side of the two diagonal braces 501. The top of both sides of the double-sided upright frame 21 is slidably assembled with side frames 503. The comma scraper 505 is set above the back roller 401 and is adjustablely assembled on the inside of the two side frames 503. The top of the double-sided upright frame 21 is fixedly installed with a cylinder 504 for adjusting the height of the comma scraper 505. The coating inside the feed tray 502 is applied to the substrate surface as the substrate passes through the gap between the feed tray 502 and the back roller 401, and the excess coating is scraped off by the comma scraper 505.

[0030] Force gauge 2 506 is fixedly installed at the end of the side frame 503, and bearing block 2 507 is installed on the inner wall of the double-sided upright frame 21 at the position corresponding to the force gauge 2 506.

[0031] According to the above structure, after the substrate leaves the slit die head 406, it directly contacts the coating inside the feed tray 502. The overly bright coating is directly applied to the surface of the substrate. When the substrate passes through the back roller 401 and the comma scraper 505, the gap between the comma scraper 505 and the substrate determines the coating thickness. The comma scraper 505 can also scrape off excess coating and return it, thereby forming a uniform coating on the surface of the substrate. At this time, all the coating work is completed. The height of the comma scraper 505 can be adjusted by the cylinder 504.

[0032] The working principle of this utility model is as follows: After the substrate enters the interior of the coating structure 2, as shown in the attached... Figure 8 As shown, the substrate is guided by guide roller 23 to the micro-gravure coating mechanism 3 for micro-gravure coating. The feed tank 301 contains coating material that adheres to the surface of the micro-gravure roller 302, allowing the coating material to be applied to the substrate surface, thus completing the coating process. The sealed cavity scraper 310 removes excess coating material from the surface of the micro-gravure roller 302. After leaving the micro-gravure coating mechanism 3, the substrate is guided by guide rollers 24 and 35 to the back roller 401. During this process, cylinder 407 operates to bring the slit die head 406 close to the back roller 401. The second coating extrusion mechanism injects the coating into the internal cavity of the slit die 406, which is then extruded through the slit and sprayed out at the lip, finally coating the substrate surface. After the substrate leaves the slit die 406, it directly contacts the coating inside the feed tray 502. Excessive gloss coating is directly applied to the substrate surface. When the substrate passes through the back roller 401 and the comma scraper 505, the gap between the comma scraper 505 and the substrate determines the coating thickness. The comma scraper 505 can also scrape off excess coating and return it, thereby forming a uniform coating on the substrate surface.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An integrated micro-pit doctor blade slit multifunctional experimental coater characterized by: Including coating structure (2); The coating structure (2) is provided with a micro-recessed coating mechanism (3), a slit coating mechanism (4) and a comma coating mechanism (5) on its inner side. The micro-recessed coating mechanism (3) is located at the bottom of the inner side of the coating structure (2), the comma coating mechanism (5) is located at the top of the inner side of the coating structure (2), and the slit coating mechanism (4) is located below the comma coating mechanism (5). The micro-recessed coating mechanism (3) coats the substrate using a micro-recessed coating method, the slit coating mechanism (4) coats the substrate using a slit coating method, and the comma coating mechanism (5) coats the substrate using a comma scraper coating method.

2. The integrated micro-pit blade slot multifunctional experimental coater of claim 1, wherein: It also includes a main control console (10), which is used to regulate the working process of the coating machine.

3. The integrated micro-pit blade slot multifunctional experimental coater of claim 1, wherein: The coating structure (2) includes a double-sided support frame (21); The inner side of the double-sided uprights (21) is rotatably assembled with guide roller one (23), guide roller two (24) and guide roller three (25) from bottom to top.

4. The integrated micro-pit blade slot multifunctional experimental coater of claim 3, wherein: The micro-grooving coating mechanism (3) includes a feeding tank (301), and a micro-grooving roller (302) is movably assembled on the inner side of the double-sided upright frame (21), and the micro-grooving roller (302) is embedded in the surface of the feeding tank (301).

5. The integrated micro-pit blade slot multifunctional experimental coater of claim 4, wherein: The bottom sides of the double-sided uprights (21) are horizontally adjustable and assembled with assembly frames (309), and the bottom ends of the two assembly frames (309) are hinged together to assemble a sealing cavity scraper (310). The micro-concave roller (302) rotates carrying the coating inside the feed tank (301), and after the excess coating is scraped off by the scraper (310) in the sealed cavity, the coating is applied to the surface of the substrate.

6. The integrated micro-pit blade slot multifunctional experimental coater of claim 5, wherein: The inner walls of both sides of the double-sided support frame (21) are fixedly installed with cylinder two (305), and the output shafts of cylinder two (305) on both sides are connected to the connecting frame (306). The inner sides of the connecting frame (306) on both sides are rotatably assembled with guide roller four (307) and back roller one (308) for guiding the transport of substrate.

7. The integrated micro-concave slit multifunctional experimental coating machine according to claim 3, characterized in that: The slit coating mechanism (4) includes a back roller (401), and fixed supports (403) are fixedly installed on both sides of the inner wall of the double-sided upright frame (21). The top of the fixed support (403) is equipped with a track plate (405) through a lifting adjustment mechanism (404). The surfaces of the track plates (405) on both sides are slidably assembled with slit mold heads (406). The slit die (406) is connected to a second coating extrusion mechanism, and the coating is extruded through the slit lip of the slit die (406) and coated on the surface of the substrate.

8. The integrated micro-pit blade slot multifunctional experimental coater of claim 7, wherein: Force gauge 1 (409) is fixedly assembled on the bottom side of both ends of the slit mold head (406), and bearing block 1 is installed on the side wall of the fixed support (403) at the position corresponding to the force gauge 1 (409).

9. The integrated micro-pit blade slot multifunctional experimental coater of claim 7, wherein: The comma coating mechanism (5) includes a feed tray (502) and a comma scraper (505); The comma scraper (505) is positioned above the back roller (401); The coating inside the feed tray (502) is applied to the substrate surface as the substrate passes through the gap between the feed tray (502) and the back roller (401), and the excess coating is scraped off by the comma scraper (505).

10. The integrated micro-concave slit multifunctional experimental coating machine according to claim 9, characterized in that: The top of both sides of the double-sided uprights (21) are slidably assembled with side frames (503), and the end of the side frame (503) is fixedly installed with a force gauge (506). The inner wall of the double-sided uprights (21) is equipped with a support block (507) at the position corresponding to the force gauge (506).

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