Three-roll coating device

Abstract

The utility model discloses a three -roller coating device, including frame, install the paint box in the inside of frame, rotate and install the first roller in the inside of paint box, install the second roller in the inside of frame and be in the first roller top, install the third roller in the inside of frame and be in the second roller top, still include setting in the inside of frame and be in the first roller rear scraper mechanism, including transverse fixed in the inside of frame's support beam, the scraper air cylinder of fixed support beam top surface, the utility model puts forward an improved three -roller coating device, and its core innovation lies in on the first roller and added the special scraper mechanism, this design not only solved the problem of paint overflow when high -speed operation, still can through scraper and make the uniform distribution of paint on the roller surface, significantly improved the uniformity of coating after coating, improve the coating quality standard, and this scraper adopts the design convenient to quick assembly and disassembly, simplified maintenance and cleaning process.

Description

Technical Field

[0001] This utility model belongs to the technical field of coating equipment, specifically relating to a three-roller coating device. Background Technology

[0002] In the field of coating technology, three-roll coating equipment is a key piece of equipment widely used in the surface coating treatment of various substrates, such as paper, film, metal foil and other materials. Traditional three-roll coating equipment usually consists of three rollers with different parameters. Through independent transmission mechanisms, the coating is transferred evenly or according to specific requirements onto the substrate. In this process, the rotation speed of the rollers, the surface roughness (mesh count) and the relative position and pressure control between them jointly determine the final thickness and quality of the coating.

[0003] As production speed increases, especially in high-speed coating operations, the coating is prone to overflow due to the centrifugal force generated by the rotation of the rollers, resulting in uneven coating edges, reduced coating uniformity, and overflowing coating may even contaminate the equipment and working environment, increasing cleaning costs and the risk of production interruption, as well as increasing maintenance workload. Therefore, this utility model proposes a three-roller coating device. Utility Model Content

[0004] The purpose of this invention is to provide a three-roller coating apparatus to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-roller coating apparatus, comprising a frame, a paint box mounted inside the frame, a first roller rotatably mounted inside the paint box, a second roller mounted inside the frame and above the first roller, and a third roller mounted inside the frame and above the second roller, and further comprising...

[0006] The scraper mechanism, located inside the frame and behind the first roller, includes a support beam fixed laterally inside the frame, a scraper cylinder fixed to the top surface of the support beam, a push plate connected to the free end of the scraper cylinder, and a paint scraper mounted on the side of the push plate and facing the first roller.

[0007] Preferably, the free end of the scraper cylinder is fixedly connected to the push plate by bolts.

[0008] Preferably, a C-shaped tray is fixed on the inner side of the frame relative to the periphery of the push plate, and the bottom end of the tray extends into the inner side of the paint box.

[0009] Preferably, the scraper mechanism further includes a quick-release structure, which is disposed between the push plate and the paint scraper.

[0010] Preferably, the quick-release structure includes a connecting block fixed to the front surface of the push plate, a connecting slot opened on the rear surface of the paint scraper for the connecting block to be inserted, a limiting hole opened on the surface of the connecting block, a pin hole opened on the top surface of the paint scraper and corresponding to the limiting hole, and a T-shaped pin set on the top of the paint scraper. The bottom end of the T-shaped pin passes through the pin hole and is inserted into the limiting hole. The quick-release structure also includes a cylindrical rotating sleeve rotatably installed on the top surface of the push plate, and a limiting baffle is fixed on the surface of the cylindrical rotating sleeve. The end of the limiting baffle extends to the top surface of the T-shaped pin.

[0011] Preferably, a locking structure is provided between the limiting baffle and the T-shaped pin. The locking structure includes an inner groove opened inside the limiting baffle, a spring installed in the inner groove, and a hemispherical telescopic locking bead. The top surface of the T-shaped pin has a circular locking groove corresponding to the hemispherical telescopic locking bead. The hemispherical telescopic locking bead is movably installed in the inner groove by the spring, and the bottom end of the hemispherical telescopic locking bead pops out into the circular locking groove.

[0012] Preferably, a No. 3 slide block is slidably mounted on both sides of the No. 3 roller on the front surface of the frame, and the No. 3 roller is rotatably mounted between the two No. 3 slide blocks via a rotating shaft. A No. 3 cylinder is mounted on the front surface of the frame relative to the top of each No. 3 slide block, and the free end of the No. 3 cylinder is connected to the No. 3 slide block.

[0013] Preferably, two No. 1 slide blocks are slidably mounted on the front surface of the frame, and the No. 1 slide blocks are fixed to the paint box. A No. 1 cylinder is installed on the front surface of the frame relative to the bottom of each No. 1 slide block, and the free end of the No. 1 cylinder is connected to the No. 1 slide block.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model proposes an improved three-roller coating device. Its core innovation lies in the addition of a specially designed doctor blade mechanism to the first roller. This design not only solves the problem of paint overflow during high-speed operation, but also allows the paint to be evenly distributed on the roller surface through the doctor blade, significantly improving the uniformity of the coating after coating and improving the coating quality standard. In addition, the doctor blade adopts a design that is easy to disassemble and assemble quickly, simplifying the maintenance and cleaning process, reducing downtime, and facilitating the quick replacement of different doctor blades according to the needs of use, thereby enhancing the adaptability of the three-roller coating device to a variety of coating materials. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This utility model Figure 2 A magnified view of a portion of region A in the middle;

[0018] Figure 4 This utility model Figure 3 A magnified view of a portion of region B in the middle;

[0019] Figure 5 This utility model Figure 4 A magnified view of a portion of region C in the middle;

[0020] In the diagram: 1. Frame; 2. Roller No. 3; 21. Cylinder No. 3; 22. Slide No. 3; 3. Roller No. 2; 4. Paint box; 41. Cylinder No. 1; 42. Slide No. 1; 5. Roller No. 1; 6. Scraper mechanism; 61. Support beam; 62. Scraper cylinder; 63. Push plate; 64. Paint scraper; 65. Quick disassembly structure; 651. Connecting block; 652. Connecting slot; 653. T-shaped pin; 654. Pin hole; 655. Limiting hole; 656. Cylindrical rotating sleeve; 657. Limiting baffle; 658. Locking structure; 6581. Inner groove; 6582. Spring; 6583. Hemispherical telescopic locking bead; 6584. Circular locking groove; 66. Material tray. Detailed Implementation

[0021] 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.

[0022] Example

[0023] Please see Figures 1 to 5 This is an embodiment of the present invention, which provides the following technical solution: a three-roller coating device, including a frame 1, a paint box 4 installed inside the frame 1, a first roller 5 rotatably installed inside the paint box 4, a second roller 3 installed inside the frame 1 and above the first roller 5, and a third roller 2 installed inside the frame 1 and above the second roller 3. The above structures are all prior art, and the specific structural principles will not be elaborated here. Simply put, it involves connecting a reduction motor to one end of the rollers to achieve the function of driving the rollers to rotate via the reduction motor. It also includes...

[0024] The scraper mechanism 6, located inside the frame 1 and behind the first roller 5, includes a support beam 61 horizontally fixed inside the frame 1, a scraper cylinder 62 bolted to the top surface of the support beam 61, a push plate 63 connected to the free end of the scraper cylinder 62, and a paint scraper 64 mounted on the side of the push plate 63 facing the first roller 5. When the subsequent device starts coating, the scraper cylinder 62 is activated, which drives the push plate 63 to move the paint scraper 64 towards the surface of the first roller 5. Under the action of the paint scraper 64, the paint on the surface of the first roller 5 can be scraped evenly. This not only solves the problem of paint overflow when the first roller 5 is running at high speed in the prior art, but also allows the paint to be evenly distributed on the surface of the first roller 5 through the paint scraper 64, which significantly improves the uniformity of the coating after coating.

[0025] In this embodiment, preferably, the free end of the scraper cylinder 62 is fixedly connected to the push plate 63 by bolts, so that the scraper cylinder 62 can smoothly drive the push plate 63 to move after starting.

[0026] In this embodiment, preferably, a C-shaped tray 66 is fixed on the inner side of the frame 1 relative to the periphery of the push plate 63, and the bottom end of the tray 66 extends into the inner side of the paint box 4, so that the paint scraped off by the paint scraper 64 can fall accurately into the inner side of the paint box 4 through the tray 66 for reuse, avoiding dripping onto the surface of the equipment.

[0027] In this embodiment, preferably, the scraper mechanism 6 further includes a quick-release structure 65, which is disposed between the push plate 63 and the paint scraper 64.

[0028] In this embodiment, preferably, the quick-release structure 65 includes a connecting block 651 welded and fixed to the front surface of the push plate 63, a connecting slot 652 opened on the rear surface of the paint scraper 64 for the connecting block 651 to be inserted, a limiting hole 655 opened on the surface of the connecting block 651, a pin hole 654 opened on the top surface of the paint scraper 64 and corresponding to the limiting hole 655, and a T-shaped pin 653 provided on the top of the paint scraper 64, the bottom end of the T-shaped pin 653 passing through the pin hole 654. The paint scraper 64 is inserted into the limiting socket 655, which can effectively limit the insertion and connection of the paint scraper 64. The quick disassembly structure 65 also includes a cylindrical rotating sleeve 656 rotatably mounted on the top surface of the push plate 63, and a limiting baffle 657 is fixed on the surface of the cylindrical rotating sleeve 656. The end of the limiting baffle 657 extends to the top surface of the T-shaped pin 653, which can effectively limit the T-shaped pin 653, ensure the insertion stability of the T-shaped pin 653, and ensure the installation stability of the paint scraper 64.

[0029] In this embodiment, preferably, a locking structure 658 is provided between the limiting baffle 657 and the T-shaped pin 653. The locking structure 658 includes an inner groove 6581 formed inside the limiting baffle 657, a spring 6582 installed in the inner groove 6581, and a hemispherical telescopic locking bead 6583. The top surface of the T-shaped pin 653 has a circular slot 6584 corresponding to the hemispherical telescopic locking bead 6583. The hemispherical telescopic locking bead 6583 is movably installed in the inner groove 6581 by the spring 6582, and the bottom end of the hemispherical telescopic locking bead 6583 pops out into the circular slot 6584, which can limit the limiting baffle 657, prevent the limiting baffle 657 from rotating during daily use, and ensure the blocking stability of the limiting baffle 657 on the T-shaped pin 653. When the operator needs to remove the paint scraper later... When replacing the paint scraper 64, simply push the limiting baffle 657 forcefully. This push will generate a vertical force on the hemispherical telescopic locking bead 6583, causing it to be gradually squeezed into the inner groove 6581. This allows the limiting baffle 657 to be easily rotated away from the top of the T-shaped pin 653. Without the T-shaped pin 653 obstructing the movement, the operator can pull the T-shaped pin 653 upwards to release the limitation on the paint scraper 64. Then, the paint scraper 64 can be moved forward to pull the connecting block 651 out of the connecting slot 652, allowing for quick removal and replacement of the paint scraper 64. This provides high convenience for subsequent disassembly and assembly, facilitating maintenance and replacement of the paint scraper 64 with different sizes and specifications for different paints.

[0030] In this embodiment, preferably, a No. 3 slide block 22 is slidably mounted on both sides of the No. 3 roller 2 via a slide rail on the front surface of the frame 1, and the No. 3 roller 2 is rotatably mounted between the two No. 3 slide blocks 22 via a rotating shaft. A No. 3 cylinder 21 is mounted on the top of each No. 3 slide block 22 on the front surface of the frame 1, and the free end of the No. 3 cylinder 21 is connected to the No. 3 slide block 22, so that after the No. 3 cylinder 21 is started, it can drive the No. 3 roller 2 to move closer to the No. 2 roller 3, so that the substrate passing over the surface of the No. 3 roller 2 rolls and contacts the No. 2 roller 3, thereby achieving the coating of paint.

[0031] In this embodiment, preferably, two No. 1 slide blocks 42 are slidably mounted on the front surface of the frame 1 via slide rails, and the No. 1 slide blocks 42 are fixed to the paint box 4. A No. 1 cylinder 41 is installed on the front surface of the frame 1 relative to the bottom of each No. 1 slide block 42, and the free end of the No. 1 cylinder 41 is connected to the No. 1 slide block 42, so that after the No. 1 cylinder 41 is started, it can drive the paint box 4 and the No. 1 roller 5 to move closer to the No. 2 roller 3, so that after the No. 1 roller 5 rotates, it can transfer the paint in the paint box 4 to the surface of the No. 2 roller 3. Then the No. 2 roller 3 will rotate to transfer the paint to the substrate conveyed on the surface of the No. 3 roller 2, thus completing the coating.

[0032] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-roll coating apparatus, comprising a frame (1), a paint box (4) mounted inside the frame (1), a first roller (5) rotatably mounted inside the paint box (4), a second roller (3) mounted inside the frame (1) and above the first roller (5), and a third roller (2) mounted inside the frame (1) and above the second roller (3), characterized in that: Also includes The scraper mechanism (6) located inside the frame (1) and behind the first roller (5) includes a support beam (61) horizontally fixed inside the frame (1), a scraper cylinder (62) fixed on the top surface of the support beam (61), a push plate (63) connected to the free end of the scraper cylinder (62), and a paint scraper (64) installed on the side of the push plate (63) and facing the first roller (5).

2. The three-roll coating apparatus according to claim 1, characterized in that: The free end of the scraper cylinder (62) is fixedly connected to the push plate (63) by bolts.

3. The three-roll coating apparatus according to claim 1, characterized in that: A C-shaped tray (66) is fixed on the inner side of the frame (1) relative to the periphery of the push plate (63), and the bottom end of the tray (66) extends into the inner side of the paint box (4).

4. The three-roll coating apparatus according to claim 1, characterized in that: The scraper mechanism (6) also includes a quick-release structure (65), which is disposed between the push plate (63) and the paint scraper (64).

5. A three-roll coating apparatus according to claim 4, characterized in that: The quick-release structure (65) includes a connecting block (651) fixed on the front surface of the push plate (63), a connecting slot (652) opened on the rear surface of the paint scraper (64) for the connecting block (651) to be inserted, a limiting hole (655) opened on the surface of the connecting block (651), a pin hole (654) opened on the top surface of the paint scraper (64) and corresponding to the limiting hole (655), and a T-shaped pin (653) set on the top of the paint scraper (64). The bottom end of the T-shaped pin (653) passes through the pin hole (654) and is inserted into the limiting hole (655). The quick-release structure (65) also includes a cylindrical rotating sleeve (656) rotatably installed on the top surface of the push plate (63), and a limiting baffle (657) is fixed on the surface of the cylindrical rotating sleeve (656). The end of the limiting baffle (657) extends to the top surface of the T-shaped pin (653).

6. A three-roll coating apparatus according to claim 5, characterized in that: A locking structure (658) is provided between the limiting baffle (657) and the T-shaped pin (653). The locking structure (658) includes an inner groove (6581) opened inside the limiting baffle (657), a spring (6582) installed in the inner groove (6581), and a hemispherical telescopic locking bead (6583). The top surface of the T-shaped pin (653) is provided with a circular locking groove (6584) corresponding to the hemispherical telescopic locking bead (6583). The hemispherical telescopic locking bead (6583) is movably installed in the inner groove (6581) by the spring (6582), and the bottom end of the hemispherical telescopic locking bead (6583) pops out into the circular locking groove (6584).

7. The three-roll coating apparatus according to claim 1, characterized in that: On the front surface of the frame (1), a No. 3 slide block (22) is slidably mounted on both sides of the No. 3 roller (2), and the No. 3 roller (2) is rotatably mounted between the two No. 3 slide blocks (22) via a rotating shaft. A No. 3 cylinder (21) is mounted on the front surface of the frame (1) relative to the top of each No. 3 slide block (22), and the free end of the No. 3 cylinder (21) is connected to the No. 3 slide block (22).

8. A three-roll coating apparatus according to claim 1, characterized in that: Two slide blocks (42) are slidably mounted on the front surface of the frame (1), and the slide blocks (42) are fixed to the paint box (4). A cylinder (41) is mounted on the front surface of the frame (1) relative to the bottom of each slide block (42), and the free end of the cylinder (41) is connected to the slide block (42).

Images