Self-compensating micro gravure roll mechanism for OCA coating

Abstract

The utility model relates to a coating mechanism technical field, concretely relates to a kind of self-compensating micro gravure roll mechanism for OCA coating, including base, the base top symmetrical fixedly connected with connecting plate, the connecting plate inside is separately provided with main roll and auxiliary roll, the main roll side is provided with self-compensating mechanism, wherein:the self-compensating mechanism includes first threaded rod, the first threaded rod outside is connected with slider in screw thread, the slider inside is provided with fixed block, the fixed block inside is rotatably connected with rotating rod, self-compensating mechanism can automatically adjust the contact state between doctor blade and main roll, ensure that always can scrape off redundant glue solution, make the even and moderate glue solution in main roll hole for coating, to guarantee the stability and uniformity of coating amount, reduce the frequency of component replacement due to wear, reduce the maintenance cost and downtime of equipment, improve production efficiency and automation degree simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of coating mechanism technology, specifically to a self-compensating micro-gravure roller mechanism for OCA coating. Background Technology

[0002] With the increasing demands for quality and precision in OCA coating, microgravure coating technology has emerged. Microgravure coating uses a small-diameter gravure roller, partially immersed in the adhesive solution in the feed tray. The rotating roller shaft carries the adhesive solution, which is then metered by a flexible doctor blade and carried away by the counter-moving substrate, achieving a uniform, thin-layer coating. This coating method offers advantages such as simple structure, good process repeatability, high coating precision, and avoidance of wrinkles and line breaks, and has been widely used in OCA coating.

[0003] There are many existing technologies for microgravure printing mechanisms, such as:

[0004] According to Chinese patent application number CN202323096415.7, specifically, a micro-gravure coating apparatus includes a main roller mechanism and micro-gravure cassette mechanisms and a coating fine-tuning mechanism respectively disposed on both sides of the main roller mechanism. The main roller mechanism includes a main roller, a support assembly, and a main roller drive assembly. The support assembly includes a fixed base and a locking assembly, and the main roller is detachably connected to the fixed base via the locking assembly. The coating fine-tuning mechanism includes a roller guide assembly, a first connecting plate, and a fine-tuning drive assembly. The roller guide assembly is connected to the first connecting plate, and the fine-tuning drive assembly drives the roller guide assembly to move away from or towards the main roller mechanism via the first connecting plate. The micro-gravure cassette mechanism includes a second connecting plate and a micro-gravure cassette rotatably connected to the second connecting plate. A scraper is provided inside the micro-gravure cassette, and the cassette drive assembly is connected to the second connecting plate. The micro-gravure cassette moves away from or towards the main roller mechanism via the cassette drive assembly. This micro-gravure coating apparatus uses movable mechanisms to facilitate the adjustment of various coating effects.

[0005] However, in actual production, there are still some challenges, such as wear of the doctor blade, changes in the viscosity of the adhesive, and vibration of the equipment, which can affect the stability and uniformity of the coating amount and thus easily affect the coating quality. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing a self-compensating micro-gravure roller mechanism for OCA coating, which solves the problem of coating quality being affected by issues such as doctor blade wear in traditional technologies.

[0007] To achieve the above objectives, this utility model provides a self-compensating micro-gravure roller mechanism for OCA coating, including a base, with connecting plates symmetrically fixedly connected to the top of the base. A main roller and an auxiliary roller are respectively arranged inside the connecting plates. A self-compensating mechanism is provided on one side of the main roller, wherein: the self-compensating mechanism includes a first threaded rod, a slider threadedly connected to the outer side of the first threaded rod, a fixed block arranged inside the slider, a rotating rod rotatably connected inside the fixed block, and a scraper fixedly connected to one side of the rotating rod.

[0008] The beneficial effects of this utility model are:

[0009] 1. When the main roller needs to be replaced, simply rotate the bolt and the second threaded rod to remove the pressure plate's restriction on the installation position and separate the main roller from the shaft. The connection method is simple, the operation is convenient and quick, and the main roller can be replaced quickly, avoiding long-term replacement and reducing the working efficiency of the mechanism.

[0010] 2. During the coating process, the self-compensation mechanism can automatically compensate and adjust according to the actual situation during the coating process, thereby ensuring the stability and uniformity of the coating amount, achieving high-precision OCA coating, and controlling the coating thickness deviation within a small range, thus improving the optical performance and appearance quality of the OCA film.

[0011] 3. By adjusting the scraper, the frequency of parts replacement due to wear is reduced, thereby lowering equipment maintenance costs and downtime, and extending the overall service life of the equipment. At the same time, the self-compensation mechanism reduces the frequency of manual adjustments, improving production efficiency and automation.

[0012] Based on the above technical solution, the present invention can be further improved as follows.

[0013] Preferably, a pressure sensor is fixedly connected to one side of the slider, one end of the first threaded rod is fixedly connected to the output end of the first motor, one end of the rotating rod is fixedly connected to a first gear, a second gear is meshed with the outside of the first gear, one side of the second gear is fixedly connected to the output end of the second motor, and a fixing frame is fixedly connected to one side of the connecting plate, and the first threaded rod rotates inside the fixing frame.

[0014] The advantages of adopting the above-mentioned further solution are that it has a simple structure, facilitates the maintenance of the mechanism components, enables the adjustment of the doctor blade angle position, keeps the pressure and angle between the doctor blade and the main roller within a suitable range, and ensures the uniformity of the adhesive on the outside of the main roller.

[0015] Preferably, the connecting plate is symmetrically slidably connected to one side of the mounting component, the connecting plate is internally threaded with bolts, and a pressure plate is slidably connected to the outside of the bolts.

[0016] The advantage of adopting the above-mentioned further solution is that by tightening the pressure plate by rotating the bolts, the position of the mounting component can be easily and quickly defined, ensuring the stability of the mounting component installation.

[0017] Preferably, one end of the main roller is fixedly connected to several limiting posts in a circular shape, and a rotating shaft is engaged with the outer side of the limiting posts. One end of the rotating shaft is fixedly connected to the output end of the third motor. A movable plate is fixedly connected to one side of the third motor, and a second threaded rod is threadedly connected inside the movable plate. Guide rods are symmetrically fixedly connected to one side of the base, and the movable plate slides outside the guide rods.

[0018] The advantages of adopting the above-mentioned further solution are that the connection between the main roller and the rotating shaft is simple. The connection and separation of the main roller and the rotating shaft can be achieved simply by moving the moving plate. The operation is simple and quick, which facilitates the rapid replacement of the main roller and improves the installation efficiency.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] During the process of scraping off excess adhesive from the surface of the main roller, the pressure sensor monitors the pressure on the scraper in real time. When the scraper wears or the pressure is uneven, the self-compensation mechanism can automatically adjust the contact state between the scraper and the main roller to ensure that excess adhesive is always scraped off, so that a uniform and appropriate amount of adhesive is retained in the cavities of the main roller for coating, thereby ensuring the stability and uniformity of the coating amount. Attached Figure Description

[0021] Figure 1 This is an isometric view of one side of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the self-compensation mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the slider of this utility model;

[0024] Figure 4 This is an isometric view of the other side of the overall structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the disassembly structure of the main roller of this utility model.

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Base; 11. Connecting plate; 12. Main roller; 13. Auxiliary roller; 14. Limiting post;

[0028] 2. Self-compensating mechanism; 21. First threaded rod; 22. Slider; 23. Fixed block; 24. Rotating rod; 25. Pressure sensor; 26. First motor; 27. First gear; 28. Second gear; 29. ​​Second motor; 210. Fixing frame;

[0029] 3. Scraper;

[0030] 4. Mounting components; 41. Bolts; 42. Pressure plates;

[0031] 5. Rotating shaft; 51. Third motor; 52. Moving plate; 53. Second threaded rod; 54. Guide rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-5 As shown, this embodiment provides a self-compensating microgravure roller mechanism for OCA coating, including a base 1. A connecting plate 11 is symmetrically fixed to the top of the base 1. A main roller 12 and an auxiliary roller 13 are respectively arranged inside the connecting plate 11. Considering the problems in the prior art where the doctor blade 3 is prone to wear after prolonged use, resulting in uneven pressure between the doctor blade 3 and the main roller 12, thus affecting the stability and uniformity of the coating amount, a self-compensating mechanism 2 is provided on one side of the main roller 12. The self-compensating mechanism 2 includes a first threaded rod 21. A slider 22 is threadedly connected to the outer side of the threaded rod 21. A fixed block 23 is set inside the slider 22. A rotating rod 24 is rotatably connected inside the fixed block 23. A scraper 3 is fixedly connected to one side of the rotating rod 24. By rotating the first threaded rod 21, the outer thread of the first threaded rod 21 meshes with the inner thread of the slider 22, thereby driving the slider 22 to move the scraper 3 and other structures, adjusting the distance between the scraper 3 and the main roller 12, ensuring stable contact between the scraper 3 and the main roller 12, achieving high-precision OCA coating, and the coating thickness deviation can be controlled within a small range.

[0034] The improvement in this embodiment is that: during the process of scraping off excess adhesive from the surface of the main roller 12 by the doctor blade 3, the pressure sensor 25 monitors the pressure on the doctor blade 3 in real time. When the doctor blade 3 is worn or the pressure is uneven, the self-compensation mechanism 2 can automatically adjust the contact state between the doctor blade 3 and the main roller 12 to ensure that excess adhesive can always be scraped off, so that a uniform and appropriate amount of adhesive is retained in the cavities of the main roller 12 for coating, thereby ensuring the stability and uniformity of the coating amount.

[0035] Specifically, to achieve automated compensation and improve coating efficiency, a pressure sensor 25 is fixedly connected to one side of the slider 22, and one end of the first threaded rod 21 is fixedly connected to the output end of the first motor 26. The pressure sensor 25 monitors the pressure on the scraper 3 in real time. When the scraper 3 experiences uneven force due to wear or other reasons, resulting in pressure deviation, the data is transmitted to the control mechanism. The control mechanism then starts the first motor 26, driving the first threaded rod 21 to rotate. The first threaded rod 21 is threadedly connected to the slider 22, which in turn drives the slider 22 to move the scraper 3 towards the main roller 12, adjusting the position of the scraper 3. The rotating rod 24 is positioned such that a first gear 27 is fixedly connected to one end of the outer side of the rotating rod 24, and a second gear 28 is meshed with the outer side of the first gear 27. One side of the second gear 28 is fixedly connected to the output end of the second motor 29. The second motor 29 drives the second gear 28 to rotate, which in turn drives the first gear 27 and the rotating rod 24 to rotate, thereby adjusting the angle position of the doctor blade 3. This maintains the pressure and angle between the doctor blade 3 and the main roller 12 within a suitable range, ensuring the uniformity of the adhesive liquid on the outer side of the main roller 12, improving the optical performance and appearance quality of the OCA film. At the same time, the self-compensation mechanism 2 reduces the frequency of manual adjustment, improving production efficiency and automation.

[0036] Considering that the scraped adhesive needs to fall back into the adhesive storage tank, a fixing frame 210 is fixedly connected to one side of the connecting plate 11. The first threaded rod 21 rotates inside the fixing frame 210. The center height of the fixing frame 210 is consistent with the center height of the main roller 12, so that the self-compensating mechanism 2 is parallel to the main roller 12, ensuring that the moving position of the scraper 3 is consistent with that of the main roller 12.

[0037] Considering the need to replace the main roller 12 according to actual coating requirements, and to ensure convenient installation and disassembly of the main roller 12 and avoid reducing coating efficiency due to prolonged replacement, mounting parts 4 are symmetrically slidably connected to one side of the connecting plate 11. Bolts 41 are threaded inside the connecting plate 11, and pressure plates 42 are slidably connected to the outside of the bolts 41. When disassembling and replacing the main roller 12, simply rotate the bolts 41 outwards to increase the distance between one end of the bolts 41 and the connecting plate 11, allowing the pressure plates 42 to rotate parallel to the base 1. This removes the restriction of the mounting parts 4's position on the pressure plates 42, separating the mounting parts 4 from the connecting plate 11, thus disassembling the main roller 12. Considering the connection between the main roller 12 and the drive mechanism during use... To facilitate the installation and disassembly of the main roller 12, several limiting posts 14 are fixedly connected to one end of the main roller 12 in a circular shape. A rotating shaft 5 is engaged with the outside of the limiting posts 14. One end of the rotating shaft 5 is fixedly connected to the output end of the third motor 51. A movable plate 52 is fixedly connected to one side of the third motor 51. A second threaded rod 53 is threadedly connected inside the movable plate 52. Guide rods 54 are symmetrically fixedly connected to one side of the base 1. The movable plate 52 slides outside the guide rods 54. By rotating the second threaded rod 53, the movable plate 52 drives the third motor 51 to move away from the base 1, separating the limiting posts 14 from the rotating shaft 5. This allows the main roller 12 to be disassembled. The operation is simple and quick, facilitating the rapid replacement of the main roller 12 and improving installation efficiency.

[0038] In summary, the working principle of this solution is as follows:

[0039] During operation, the substrate is driven between the main roller 12 and the auxiliary roller 13, with the substrate contacting the surfaces of both rollers. The base 1 stores adhesive, and the main roller 12 is partially immersed in the OCA adhesive within the base 1. Then, the third motor 51 is activated to drive the rotating shaft 5 to rotate. The main roller 12 is connected to the rotating shaft 5 via a limiting post 14, further driving its rotation. The rotating main roller 12 carries away the adhesive. During this process, one end of the scraper 3 contacts the surface of the main roller 12, scraping away excess adhesive. The substrate, moving in the opposite direction, carries away the adhesive, resulting in a uniform OCA coating on the substrate. Simultaneously, the pressure sensor 25 monitors the pressure on the scraper 3 in real time. When the scraper 3 experiences uneven force due to wear or other reasons, causing a pressure deviation, the data is transmitted to the control mechanism. The control mechanism then activates the first motor 26, driving the first threaded rod 21 to rotate. The first threaded rod 21 is threadedly connected to the slider 22, which in turn drives the slider 22 to move the scraper 3 towards the main roller 12, adjusting the position of the scraper 3. Furthermore, the second motor 29 drives the second gear 28 to rotate, which in turn drives the first gear 27 and the rotating rod 24 to rotate, thereby adjusting the angle of the doctor blade 3. This maintains the pressure and angle between the doctor blade 3 and the main roller 12 within a suitable range, ensuring the uniformity of the adhesive on the outside of the main roller 12 and improving the optical performance and appearance quality of the OCA film. At the same time, the self-compensation mechanism 2 reduces the frequency of manual adjustments, improving production efficiency and automation. When the main roller 12 needs to be replaced according to different coating requirements, the rotating bolt 41 is moved outward, increasing the distance between one end of the bolt 41 and the connecting plate 11. This allows the pressure plate 42 to be rotated parallel to the base 1, removing the restriction of the mounting part 4 on the position of the pressure plate 42, separating the mounting part 4 from the connecting plate 11. The second threaded rod 53 is rotated, causing the moving plate 52 to drive the third motor 51 to move away from the base 1, separating the limiting post 14 from the rotating shaft 5. This allows the main roller 12 to be disassembled. The operation is simple and quick, facilitating the rapid replacement of the main roller 12 and improving installation efficiency.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A self-compensating microgravure roller mechanism for OCA coating, comprising a base (1), characterized in that: The base (1) is symmetrically fixedly connected to the top of the connecting plate (11). The connecting plate (11) is respectively provided with a main roller (12) and an auxiliary roller (13). A self-compensation mechanism (2) is provided on one side of the main roller (12). The self-compensation mechanism (2) includes a first threaded rod (21). A slider (22) is threadedly connected to the outside of the first threaded rod (21). A fixing block (23) is provided inside the slider (22). A rotating rod (24) is rotatably connected inside the fixing block (23). A scraper (3) is fixedly connected to one side of the rotating rod (24).

2. The self-compensating microgravure roller mechanism for OCA coating according to claim 1, characterized in that: A pressure sensor (25) is fixedly connected to one side of the slider (22). One end of the first threaded rod (21) is fixedly connected to the output end of the first motor (26). One end of the rotating rod (24) is fixedly connected to the first gear (27). The first gear (27) is meshed with the second gear (28) on the outside. One side of the second gear (28) is fixedly connected to the output end of the second motor (29).

3. The self-compensating microgravure roller mechanism for OCA coating according to claim 1, characterized in that: A fixing frame (210) is fixedly connected to one side of the connecting plate (11), and the first threaded rod (21) rotates inside the fixing frame (210).

4. The self-compensating microgravure roller mechanism for OCA coating according to claim 1, characterized in that: The connecting plate (11) is symmetrically and slidably connected to one side of the mounting component (4), and the connecting plate (11) is threadedly connected to the inside of the bolt (41), and the bolt (41) is slidably connected to the outside of the pressure plate (42).

5. The self-compensating microgravure roller mechanism for OCA coating according to claim 1, characterized in that: One end of the main roller (12) is fixedly connected to several limiting posts (14) in a circular shape. A rotating shaft (5) is engaged with the outside of the limiting posts (14). One end of the rotating shaft (5) is fixedly connected to the output end of the third motor (51). A moving plate (52) is fixedly connected to one side of the third motor (51). A second threaded rod (53) is threaded inside the moving plate (52). A guide rod (54) is symmetrically fixedly connected to one side of the base (1). The moving plate (52) slides outside the guide rod (54).

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