A micro-concave high-speed coater

Abstract

The utility model discloses a kind of micro-concave high-speed coaters, including coating box and heat treatment device connected in its right side, the coating box front side is provided with observation port, several steering rollers are rotatably connected in the top of the coating box, the coating box bottom left side is fixedly connected with paint box, the coating box and heat treatment device inside are provided with film material, further include: the material scraping mechanism includes the gravure cylinder rotatably connected in the inside of the paint box, the gravure cylinder front end is fixedly connected with first motor, the gravure cylinder left side is provided with scraper, the scraper left side is rotatably connected with rotating seat, the rotating seat bottom is fixedly connected with moving plate, the rotating seat front and rear sides are provided with hinged link, the moving plate left side is rotatably connected with screw rod.The micro-concave high-speed coater disclosed in the utility model has the dual advantage effect of being convenient for scraper maintenance and widely compatible.

Description

Technical Field

[0001] This utility model relates to the field of micro-gravure coating technology, and in particular to a high-speed micro-gravure coating machine. Background Technology

[0002] Coating technology is a key process for uniformly applying functional fluids to the surface of a substrate, and it is widely used in emerging high-tech fields such as lithium battery electrode manufacturing and optical thin films. Among them, microgravure coating is a relatively advanced pre-measured precision coating technology. It uses microgravure rollers with precise micron-level cells engraved on their surface to quantitatively carry the coating liquid and transfer it to the substrate, thereby achieving the efficient preparation of ultra-thin and uniform coatings. It is an indispensable core process in high-end fields such as lithium batteries and optical thin films.

[0003] However, in existing micro-gravure high-speed coating devices, the scraper structure design is unreasonable, making cleaning and maintenance extremely inconvenient. This can easily lead to slurry residue and drying, which in turn affects the scraping accuracy and coating uniformity. At the same time, the lack of effective adjustment capability means that it is impossible to make flexible adjustments after changing to micro-gravure rollers of different specifications, which seriously restricts the adaptability and application range of the equipment. For example, the doctor blades in existing micro-gravure high-speed coating devices are mostly sheet-shaped, with unreasonable structural design, making cleaning and maintenance extremely inconvenient. After the slurry residue dries on its surface, it is difficult to disassemble and clean it, which will affect the coating accuracy and the final uniformity of the coating. On the other hand, the mechanism lacks effective adjustment capabilities and cannot be flexibly adjusted after changing to micro-gravure rollers of different specifications, which greatly limits the adaptability and application range of the equipment to different process requirements. Utility Model Content

[0004] This utility model discloses a micro-concave high-speed coating machine, which aims to solve the technical problems of the unreasonable scraper structure design of existing micro-concave high-speed coating devices, which makes cleaning and maintenance extremely inconvenient. At the same time, it lacks effective adjustment capabilities and cannot be flexibly adjusted after changing micro-concave rollers of different specifications, thus restricting the adaptability and application range of the equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-speed micro-gravure coating machine includes a coating box and a heat treatment device connected to its right side. An observation port is provided on the front side of the coating box. Several steering rollers are rotatably connected to the top of the coating box. A paint box is fixedly connected to the bottom left side of the coating box. A film material is disposed inside the coating box and the heat treatment device. The machine also includes: a scraping mechanism: the scraping mechanism includes a gravure roller rotatably connected inside the paint box. A first motor is fixedly connected to the front end of the gravure roller. A scraper is provided on the left side of the gravure roller. A rotating seat is rotatably connected to the left side of the scraper. A moving plate is fixedly connected to the bottom of the rotating seat. Hinge rods are provided on the front and rear sides of the rotating seat. A lead screw is rotatably connected to the left side of the moving plate; a leveling mechanism: the leveling mechanism is fixedly connected to the bottom right side of the coating box.

[0006] By adopting the above technical solution, the bottom movable plate is installed on the slide rail inside the paint box. When cleaning is required, the operator only needs to rotate the screw to push the entire movable plate horizontally to the left along the slide rail. This action will cause the scraper connected to it via the rotating seat and hinge rod to move away from the working area of ​​the gravure cylinder, creating a wide and safe operating space. This allows the operator to clean the working edge of the scraper and the surface of the gravure cylinder without obstruction, solving the problem of unstable coating quality caused by residual and dried paste. At the same time, the movable design, together with the rotatable and locking rotating seat, allows the angle of the scraper to be adjusted when changing gravure cylinders of different diameters, so that its arc-shaped cutting edge can achieve the most ideal fit with the cylindrical surface of the new gravure cylinder, ensuring the stability of the scraping effect and significantly expanding the production application range of a single machine.

[0007] As a further embodiment of this utility model: the leveling mechanism includes a fixed frame fixedly connected to the bottom right side of the coating box, a vibrating roller fixedly connected between the fixed frames, a connecting cover fixedly connected to the front end of the vibrating roller, a second motor fixedly connected to the rear end of the connecting cover, a rotating roller rotatably connected to the rear side of the second motor, and a flipping roller fixedly connected to the bottom of the vibrating roller.

[0008] By adopting the above technical solution, efficient leveling of the coating is achieved. When the second motor starts, it drives the turntable and six rotating rollers to rotate eccentrically inside the vibrating roller. Under the action of centrifugal force, the rotating rollers continuously impact the inner wall of the vibrating roller, thereby uniformly transmitting high-frequency, micro-amplitude mechanical vibrations to the outer surface of the vibrating roller. When the film material that has completed the coating comes into contact with the vibrating roller, its surface wet coating will be disturbed by these uniform vibrations, effectively reducing the apparent viscosity of the coating liquid and stimulating its fluidity. This significantly promotes the fusion and spreading between the slurry segments, resulting in a smoother and more uniform wet film. At the same time, before contacting the vibrating roller, the flipping roller below it can guide the film material so that its uncoated back side contacts the vibrating roller, preventing the vibrating roller from damaging or contaminating the wet coating.

[0009] In summary, this application includes at least one of the following beneficial technical effects: 1. It achieves the dual advantages of convenient maintenance and wide compatibility. The scraper assembly can be moved laterally as a whole, creating a safe and ample space for cleaning operations, making it easy to remove residual paste from the scraper blade and the surface of the gravure roller. At the same time, the adjustable and locking design ensures that the scraper arc surface can quickly and accurately adapt to the new roller surface curvature, maintaining the best scraping contact state.

[0010] 2. It achieves efficient and non-destructive leveling of the coating. Through uniform high-frequency vibration, it can effectively reduce the apparent viscosity of the coating liquid, promote its flow and spreading, and thus significantly improve the fusion effect of the slurry segments generated by the transfer of the micro-concave roller, and obtain a smoother and more uniform wet film, laying a good foundation for subsequent drying and film formation.

[0011] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a micro-concave high-speed coating machine proposed in this utility model.

[0013] Figure 2 This is a cross-sectional view of the coating box of a micro-concave high-speed coating machine proposed in this utility model.

[0014] Figure 3 This is a schematic diagram of the scraping mechanism of a micro-concave high-speed coating machine proposed in this utility model.

[0015] Figure 4 This is a diagram illustrating the scraper of a micro-concave high-speed coating machine proposed in this utility model.

[0016] Figure 5 This is a schematic diagram of the leveling mechanism of a micro-concave high-speed coating machine proposed in this utility model.

[0017] Figure 6 This is a cross-sectional view of the vibrating roller of a micro-concave high-speed coating machine proposed in this utility model.

[0018] In the attached diagram: 1. Coating box; 2. Heat treatment device; 3. Observation port; 4. Turning roller; 5. Coating box; 6. Film material; 7. Gravure printing roller; 8. First motor; 9. Scraper; 10. Rotating seat; 11. Moving plate; 12. Hinge rod; 13. Lead screw; 14. Fixing frame; 15. Vibrating roller; 16. Connecting cover; 17. Second motor; 18. Rotating roller; 19. Turning roller. Detailed Implementation

[0019] 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.

[0020] Reference Figures 1 to 4 A micro-gravure high-speed coating machine includes a coating box 1 and a heat treatment device 2 connected to its right side. An observation port 3 is provided on the front side of the coating box 1. Several steering rollers 4 are rotatably connected to the top of the coating box 1. A paint box 5 is fixedly connected to the bottom left side of the coating box 1. A film material 6 is provided inside the coating box 1 and the heat treatment device 2. The machine also includes: a scraping mechanism: the scraping mechanism includes a gravure roller 7 rotatably connected inside the paint box 5. A first motor 8 is fixedly connected to the front end of the gravure roller 7. A scraper 9 is provided on the left side of the gravure roller 7. A rotating seat 10 is rotatably connected to the left side of the scraper 9. A moving plate 11 is fixedly connected to the bottom of the rotating seat 10. Hinges 12 are provided on the front and rear sides of the rotating seat 10. A lead screw 13 is rotatably connected to the left side of the moving plate 11; a leveling mechanism: the leveling mechanism is fixedly connected to the bottom right side of the coating box 1.

[0021] Specifically, in the scraping state, the scraper 9 forms a stable support system with the back rotating seat 10 and the hinge rod 12, so that its arc-shaped cutting edge is closely attached to the surface of the gravure cylinder 7 at a preset angle and pressure. At this time, the scraper 9 acts as a precision barrier and completely scrapes away the excess coating liquid on the surface of the gravure cylinder 7 that is not in the cells through the line contact principle. When it is necessary to maintain or adapt to different specifications of gravure cylinders 7, the mechanism converts the rotational motion into the linear motion of the moving plate 11 through the lead screw 13, which drives the entire scraper 9 assembly to move laterally away from the working area, creating a safe operating space. At the same time, the angle of the scraper 9 is adjusted by the rotational degree of freedom of the rotating seat 10 so that it always maintains the optimal fit with the surface of the gravure cylinder 7 with changing curvature.

[0022] The front and rear ends of the gravure printing cylinder 7 are rotatably connected to the front and rear sides of the paint box 5. The bottom of the gravure printing cylinder 7 is immersed in the paint inside the paint box 5. The right side of the scraper 9 is tightly attached to the right side of the gravure printing cylinder 7. The scraper 9 has an arc-shaped design. The scraper 9 adopts an arc-shaped design and makes its right side tightly attached to the right side of the gravure printing cylinder 7, forming an optimal line contact with the cylindrical surface of the cylinder rather than a point contact. The scraping force of the scraper on the roller surface is evenly distributed, which avoids local wear and improves the scraping efficiency.

[0023] The rotating seat 10 is angle-adjustable and can be locked in place by screws. This design allows for precise setting and rigid fixation of the working angle of the scraper 9, ensuring that its arc-shaped cutting edge can achieve optimal fit with gravure rollers 7 of different diameters. The hinge rod 12 is hinged at both ends to the left side of the scraper 9 and the top of the moving plate 11, forming a stable linkage support structure. The screw rod 13 is threaded in the middle to the left side of the paint box 5, and the bottom of the moving plate 11 is slidably connected to the bottom of the paint box 5 via a slide rail.

[0024] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 In a preferred embodiment, the leveling mechanism includes a fixed frame 14 fixedly connected to the bottom right side of the coating box 1, a vibrating roller 15 fixedly connected between the fixed frames 14, a connecting cover 16 fixedly connected to the front end of the vibrating roller 15, a second motor 17 fixedly connected to the rear end of the connecting cover 16, a rotating roller 18 rotatably connected to the rear side of the second motor 17, and a flipping roller 19 fixedly connected to the bottom of the vibrating roller 15.

[0025] Specifically, the rotating roller 18 inside the vibrating roller 15 generates centrifugal force when rotating, and continuously rubs against the inner wall of the vibrating roller 15, causing its surface to generate high-frequency micro-amplitude vibration. When the uncoated back of the film material 6 contacts the vibrating roller 15, the vibration energy is transmitted through the substrate to the wet coating, causing the slurry movement to intensify and reducing its apparent viscosity, thereby using surface tension to promote the fusion and spreading of slurry segments. At the same time, through the path guidance of the lower flipping roller 19, the coating surface is physically isolated from the vibrating roller 15, which not only ensures the effective transmission of vibration energy, but also completely avoids contact damage to the wet coating.

[0026] The vibrating roller 15 is fixedly connected to the upper right corner of the bottom of the coating box 1 via the rear fixing bracket 14. The connecting cover 16 is fixedly connected to the lower right corner of the bottom of the coating box 1 via the front fixing bracket 14. The flipping roller 19 is rotatably connected to the underside of the vibrating roller 15 via the extension seat to flip the film material 6, ensuring that the film material 6 can contact the vibration area with its back side, thus achieving a non-destructive leveling mode in which the coating surface always faces outward and the back side contacts the vibrating roller 15.

[0027] The vibrating roller 15 has a hollow interior. The second motor 17 and the rotating rollers 18 are both located inside the cavity of the vibrating roller 15. The rear end of the second motor 17 is connected to six rotating rollers 18 via a turntable. The surfaces of the six rotating rollers 18 are all in contact with the inner wall of the vibrating roller 15. The centrifugal force generated by the multiple rotating rollers 18 can be evenly distributed along the circumference of the roller body, so that the vibration energy can be efficiently and symmetrically transmitted to the entire outer surface of the vibrating roller 15, avoiding the uneven vibration phenomenon that may be caused by a single excitation point and improving the leveling effect.

[0028] Reference Figure 1 and Figure 2 In a preferred embodiment, both the coating box 1 and the heat treatment device 2 are provided with film inlets on the left and right sides. The film material 6 is turned by the steering roller 4 and passes through the scraping mechanism, the leveling mechanism and the heat treatment device 2 in sequence. A threaded seat is provided on the left side of the coating box 5.

[0029] Specifically, the membrane material 6 is turned by the area of ​​the turning roller 4 and passes through the scraping mechanism, leveling mechanism and heat treatment device 2 in sequence. It strictly follows the process logic sequence of "precise coating → efficient leveling → instant curing" to ensure that each functional module is closely connected in space to optimize the process flow.

[0030] Working principle: During use, the film material 6 is fed into the coating box 1 through the inlet on the left side. Inside the box, the film material 6 is first guided by several steering rollers 4, and after changing its running direction, it enters the paint box 5 area located at the bottom of the coating box 1, where it contacts the top of the gravure roller 7. At this time, the first motor 8 drives the gravure roller 7 to rotate, and its bottom is immersed in the paste in the paint box 5. The cells thus carry the paste. The scraper 9 on the side, in the scraping state, thanks to its arc design and the stable support formed by the rotating seat 10 and the hinge rod 12, makes the blade edge fit tightly against the surface of the gravure roller 7 at the optimal angle, accurately scraping away the excess paste on the roller surface, ensuring that only a predetermined amount of paste in the cells is retained. When the film material 6 passes through the gravure roller 7, the paste in the cells is transferred to the film surface, forming a wet coating of a fixed thickness. The coated film material 6 is then rotated by the flipping roller 19 and comes into contact with the vibrating roller 15. Guided by the flipping roller 19, the coating material 6 is turned so that the wet coating faces outward, while the uncoated back side contacts the vibrating roller 15 above. Simultaneously, the second motor 17 drives the rotating roller 18 to rotate at high speed within the cavity of the vibrating roller 15. The rotating roller 18 inside the vibrating roller 15 generates centrifugal force during rotation and continuously rubs against the inner wall of the vibrating roller 15, causing high-frequency micro-vibrations on its surface. When the uncoated back side of the film material 6 contacts the vibrating roller 15, the vibration energy is transferred through the substrate to the wet coating, intensifying the movement of the slurry and reducing its apparent viscosity. This utilizes surface tension to promote the fusion and spreading of the slurry segments. The leveled film material 6 is then guided by the turning roller 4 into the heat treatment device 2. In the heat treatment device 2, the coating is dried and cured at a controlled temperature, ultimately forming a uniform, dense solid film with specific functions on the film surface. Throughout the coating process, the operator can monitor the coating and leveling status in real time through the observation port 3. When processing the scraper 9, the moving plate 11 can be driven to move along the slide rail by rotating the lead screw 13, so that the entire scraper assembly can be removed from the roller for easy cleaning; at the same time, the angle of the rotating seat 10 can be adjusted and locked to quickly adapt to gravure rollers 7 of different diameters, ensuring that the scraping effect is always optimal.

[0031] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A micro-concave high-speed coating machine, comprising a coating box (1) and a heat treatment device (2) connected to its right side, wherein an observation port (3) is provided on the front side of the coating box (1), a plurality of guide rollers (4) are rotatably connected to the top of the coating box (1), a paint box (5) is fixedly connected to the bottom left side of the coating box (1), and a film material (6) is disposed inside the coating box (1) and the heat treatment device (2), characterized in that, Also includes: Scraping mechanism: The scraping mechanism includes an intaglio roller (7) rotatably connected inside the paint box (5), a first motor (8) is fixedly connected to the front end of the intaglio roller (7), a scraper (9) is provided on the left side of the intaglio roller (7), a rotating seat (10) is rotatably connected to the left side of the scraper (9), a moving plate (11) is fixedly connected to the bottom of the rotating seat (10), hinge rods (12) are provided on the front and rear sides of the rotating seat (10), and a lead screw (13) is rotatably connected to the left side of the moving plate (11). Leveling mechanism: The leveling mechanism is fixedly connected to the bottom right side of the coating box (1).

2. The micro-concave high-speed coating machine according to claim 1, characterized in that, The front and rear ends of the gravure roller (7) are rotatably connected to the front and rear sides of the paint box (5). The bottom of the gravure roller (7) is immersed in the paint inside the paint box (5). The right side of the scraper (9) is tightly attached to the right side of the gravure roller (7). The scraper (9) has an arc-shaped design.

3. A micro-concave high-speed coating machine according to claim 2, characterized in that, The rotating seat (10) can be angle-adjusted and can be locked by screws. The two ends of the hinge rod (12) are respectively hinged to the left side of the scraper (9) and the top of the moving plate (11). The middle part of the lead screw (13) is threaded to the left side of the paint box (5). The bottom of the moving plate (11) is slidably connected to the bottom of the paint box (5) through a slide rail.

4. A micro-concave high-speed coating machine according to claim 1, characterized in that, The leveling mechanism includes a fixed frame (14) fixedly connected to the bottom right side of the coating box (1), a vibrating roller (15) fixedly connected between the fixed frames (14), a connecting cover (16) fixedly connected to the front end of the vibrating roller (15), a second motor (17) fixedly connected to the rear end of the connecting cover (16), a rotating roller (18) rotatably connected to the rear side of the second motor (17), and a flipping roller (19) fixedly connected to the bottom of the vibrating roller (15).

5. A micro-concave high-speed coating machine according to claim 4, characterized in that, The rear end of the vibrating roller (15) is fixedly connected to the upper right corner of the bottom of the coating box (1) via the rear fixing frame (14), the connecting cover (16) is fixedly connected to the lower right corner of the bottom of the coating box (1) via the front fixing frame (14), and the flipping roller (19) is rotatably connected to the underside of the vibrating roller (15) via the extension seat.

6. A micro-concave high-speed coating machine according to claim 5, characterized in that, The vibrating roller (15) has a hollow interior. The second motor (17) and the rotating roller (18) are both located in the cavity inside the vibrating roller (15). The rear end of the second motor (17) is connected to six rotating rollers (18) via a turntable. The surfaces of the six rotating rollers (18) are all attached to the inner wall of the vibrating roller (15).

7. A micro-concave high-speed coating machine according to claim 1, characterized in that, The coating box (1) and the heat treatment device (2) are provided with film inlets on both the left and right sides. The film material (6) is turned by the turning roller (4) and passes through the scraping mechanism, the leveling mechanism and the heat treatment device (2) in sequence. The coating box (5) is provided with a threaded seat on the left side.

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