Device capable of reducing roller coating impurities

Abstract

The invention relates to the field of roller coating equipment, in particular to a device capable of reducing roller coating impurities, which comprises a rack, a first roller body, a second roller body, a coating supply head and a scraper blade, the first roller body and the second roller body are both rotationally matched with the rack, a coating groove is formed between the first roller body and the second roller body, and the coating supply head is used for supplying coating to the coating groove; the scraper blade is attached to the surface of the top of the first roller body and provided with a V-shaped bent position, the V-shaped bent position is located in the middle of the scraper blade, the two ends of the scraper blade extend to the two ends of the first roller body respectively, and the first roller body rotates towards the V-shaped bent position. And the V-shaped bent part and the coating groove are sequentially distributed in the rotating direction of the first roller body. The roller coating device has the effect that the situation that production materials are polluted by impurities in the long-term roller coating process is reduced.

Description

Technical Field

[0001] The present application relates to the field of roller coating equipment, and in particular to a device capable of reducing roller coating impurities. Background Art

[0002] The roller coating process has the characteristics of simple production equipment, fast production speed and wide adaptability. It is often used in industries such as paint coating, glue coating, and ink printing to cover the surface of production materials with one or more protective layers.

[0003] In existing related technologies, the protective surface layer needs to be applied using a coating roller. That is, the coating is adhered to the surface of the coating roller, and then the coating roller is abutted and rolled against the surface of the production material, so that the coating adhered to the coating roller is transferred to the surface of the production material, thereby forming a protective surface layer on the surface of the production material after the coating is cured. In addition, during the roller coating process, the production material is continuously or intermittently conveyed forward along the roller coating platform, and the conveyance of the production material can be carried out by equipment such as chains or conveyor belts. By passing the production material forward through the coating roller, the coating is rolled onto all parts of the production material.

[0004] With respect to the above-mentioned related technologies, dust and impurities are often inevitably adhered to the surface or the surrounding cross-sections of the production materials, so that when the surface of the production materials is coated with a protective surface layer by a paint roller, the paint roller will not only transfer the roller surface paint to the surface of the production materials, but also adhere the impurities on the surface of the production materials to the surface of the paint roller, and then the impurities adhered to the surface of the paint roller may adhere to the subsequent production material surface, or enter the paint bucket with the paint in the paint tank, and then be transported to the paint tank through a circulation pump and adhere to the paint roller again.

[0005] After multiple cycles, the dust and impurity content of the coating will gradually increase, making it easier for impurities to adhere to the surface of the production material, which will have a direct impact on the roller coating processing yield of the production material and affect the product quality of the production material. Summary of the Invention

[0006] In order to reduce the contamination of production materials by impurities during long-term roller coating, the present application provides a device that can reduce roller coating impurities.

[0007] The present application provides a device for reducing roller coating impurities using the following technical solution: A device capable of reducing impurities in roller coating comprises a frame, a first roller body, a second roller body, a coating supply head and a scraper blade; The first roller and the second roller are both rotatably coupled to the frame, a coating groove is formed between the first roller and the second roller, and the coating supply head is used to supply coating to the coating groove; The scraper blade is attached to the top surface of the first roller body, and the scraper blade is provided with a V-shaped bend, which is located in the middle of the scraper blade. Both ends of the scraper blade extend to the two ends of the first roller body respectively. The rotation direction of the first roller body is toward the V-shaped bend, and the V-shaped bend and the paint groove are distributed in sequence along the rotation direction of the first roller body.

[0008] By adopting the above technical solution, when impurities from the production materials adhere to the first roller, the impure coating material moves toward the location of the scraper blade as the first roller rotates, causing the coating material to be blocked by the scraper blade attached to the surface of the first roller. As the first roller rotates, the blocked coating material flows along the surface of the scraper blade, causing the impurity-containing coating material to flow to the ends of the first roller and exit the coating trough from both ends of the first roller. This makes it easier for the first roller to coat the coating material in the coating trough that does not contain many impurities during the coating process, making it less likely for the production materials to be contaminated by impurities during the long-term coating process.

[0009] Optionally, the device for reducing roller coating impurities also includes a reflux trough and a filter barrel, the reflux trough is used to receive the paint flowing from both ends of the first roller, the reflux trough is located at the bottom of the first roller, and the reflux trough is connected to the paint supply head through a circulation pump, and the filter barrel is used to filter impurities in the paint flowing to the paint supply head.

[0010] By adopting the above technical solution, the paint flowing down from both ends of the first roller body is received by the reflux tank body, and is re-pumped to the paint supply head by the circulation pump after being filtered by the filter barrel, which is beneficial to reducing the consumption of paint.

[0011] Optionally, the barrel cavity of the filter barrel is divided into a first chamber and a second chamber by a filter screen, the first chamber is connected to the reflux tank body, and the second chamber is connected to the circulation pump.

[0012] By adopting the above technical solution, the paint flowing down from both ends of the first roller body first enters the first chamber, and then enters the second chamber after being filtered by the filter, so that impurities mixed with the paint are blocked in the first chamber.

[0013] Optionally, the frame is provided with a blade adjusting member, and the blade adjusting member is used to move the scraper blade toward or away from the first roller body.

[0014] By adopting the above technical solution, when impurities are relatively small and do not affect the coating roller coating, the blade adjusting member is used to move the scraper blade away from the first roller body, thereby reducing wear on the first roller body and the scraper blade. When impurities are relatively large and affect the coating roller coating, the blade adjusting member is used to move the scraper blade closer to the first roller body, thereby reducing wear on the first roller body and the scraper blade and reducing the amount of impurities applied to the production material.

[0015] Optionally, the scraper blade is rotatably engaged with the frame, the blade adjusting member is a cylinder, one end of the blade adjusting member is rotatably engaged with the frame, and the other end of the blade adjusting member is rotatably engaged with the scraper blade.

[0016] By adopting the above technical solution, when the blade adjusting member changes its own length, it will drive the scraper blade to move closer to or away from the first roller body, and the structure is simple and reliable.

[0017] Optionally, the frame is provided with a vibration component, and the vibration component is used to make the scraper blade vibrate along the blade edge direction of the scraper blade.

[0018] By adopting the above technical solution, for impurities that have adhered to the surface of the first roller and are difficult to remove, the vibration component can be used to vibrate the scraper blade along the blade edge, which will cause the impurities to be scraped back and forth in a short time, thereby removing the impurities adhered to the surface of the first roller in time.

[0019] Optionally, the vibration assembly includes a vibration slide, a vibration block and a linear vibrator, the vibration slide is mounted on a frame, the vibration block slides along the blade edge of the scraper blade and is engaged with the vibration slide, the scraper blade is rotated and engaged with the frame through the vibration block, one end of the linear vibrator is mounted on the frame, and the other end of the linear vibrator is mounted on the vibration block.

[0020] By adopting the above technical solution, the linear vibrator vibrates, driving the vibration slide to slide along the vibration slide seat, and then driving the scraper blade to vibrate, which is conducive to ensuring the stability of the scraper blade vibration process.

[0021] Optionally, a reset elastic member is provided between the vibration slider and the vibration slide seat, and the vibration slider and the vibration slide seat are both mounted on the reset elastic member.

[0022] By adopting the above technical solution, the scraper blade can be returned to its initial position by resetting the elastic member after the scraper blade stops vibrating, thereby reducing the situation where the scraper blade fails to effectively fit the first roller body due to inaccurate resetting of the linear vibrator.

[0023] Optionally, the scraper blade is provided with a drainage groove, and both ends of the drainage groove extend to both ends of the scraper blade respectively.

[0024] By adopting the above technical solution, impurities mixed in the paint and paint that has condensed into blocks can easily enter the interior of the drainage groove when flowing along the extension direction of the scraper blade, so that the impurities and the blocks of paint can be separated from the first roller body in time after contacting the scraper blade, which is beneficial to reduce the contamination of production materials by impurities or the occurrence of coating grooves.

[0025] Optionally, the scraper blade is made of ceramic or nylon.

[0026] The adoption of the above technical solution is beneficial to improving the service life of the scraper blade.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. When impurities from the production material adhere to the first roller, the impure coating will move toward the location of the scraper blade as the first roller rotates, causing the coating to be blocked by the scraper blade attached to the surface of the first roller. As the first roller rotates, the blocked coating will flow along the surface of the scraper blade, causing the impurity-containing coating to flow to the ends of the first roller and exit the coating trough from both ends of the first roller. This makes it easier for the first roller to roll over the coating material in the coating trough that does not contain many impurities during the coating process, making it less likely for the production material to be contaminated by impurities during the long-term coating process. 2. The paint flowing down from both ends of the first roller is received by the reflux tank, filtered by the filter barrel and then pumped back to the paint supply head by the circulation pump, which helps to reduce the consumption of paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the first overall schematic diagram of the device for reducing roller coating impurities in Example 1 of the present application.

[0029] Figure 2 This is the second overall schematic diagram of the device for reducing roller coating impurities in Example 1 of the present application.

[0030] Figure 3 This is a schematic diagram of the pipeline connection of the device for reducing roller coating impurities in Example 1 of the present application.

[0031] Figure 4 This is a schematic diagram of the first flow of the coating after being blocked by the scraper blade in Example 1 of the present application.

[0032] Figure 5 This is a schematic diagram of the second flow of the coating after being blocked by the scraper blade in Example 1 of the present application.

[0033] Figure 6 This is an overall schematic diagram of the filter barrel in Example 1 of the present application.

[0034] Figure 7This is an overall schematic diagram of the device for reducing roller coating impurities according to Example 2 of the present application.

[0035] Figure 8 This is a schematic diagram of the connection between the vibration component and the scraper blade in Example 2 of the present application.

[0036] Figure 9 This is an overall schematic diagram of the scraper blade of Example 3 of the present application.

[0037] Figure 10 yes Figure 9 An enlarged schematic diagram of part A.

[0038] Figure 11 It is a schematic diagram of the positions of the reflow tank body and the first roller body in Example 4.

[0039] Figure 12 This is a schematic diagram of the connection implementation of the reflux tank body of Example 4.

[0040] Explanation of the accompanying drawings: 1. First roller body; 101. Paint tank; 11. Blade adjustment member; 12. Rotating connecting plate; 2. Second roller body; 3. Paint supply head; 31. Circulation pump; 4. Scraper blade; 401. Curved blade; 402. V-shaped bend; 403. Drainage groove; 5. Roller coating platform; 6. Reflux tank body; 7. Filter barrel; 701. First chamber; 702. Second chamber; 71. Filter screen; 8. Vibration assembly; 801. Vibration chute; 81. Vibration slide; 82. Vibration slider; 821. Reset elastic member; 83. Linear vibrator. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-12 This application is described in further detail.

[0042] Example 1: Example 1 of the present application discloses a device for reducing impurities in roller coating. Figure 1 and Figure 2 The device for reducing roller coating impurities includes a frame, a first roller body 1, a second roller body 2, a coating supply head 3, and a scraper blade 4. A roller coating platform 5 is provided at the bottom of the frame. The roller coating platform 5 is used to convey the production material forward. The first roller body 1 and the second roller body 2 are distributed along the production material conveying direction, and the first roller body 1 is located in front of the second roller body 2.

[0043] Both ends of the first roller 1 are rotatably engaged with the machine frame, and the first roller 1 is positioned horizontally. A height-adjustable roller gap is defined between the coating platform 5 and the first roller 1. The height of the coating gap can be adjusted by adjusting the height of the coating platform 5 or the first roller 1. As the production material is conveyed forward along the coating platform 5, the top of the production material fits tightly against the bottom of the first roller 1, allowing the coating to be applied to the surface of the production material by the first roller 1.

[0044] The second roller 2 is a metering roller, with both ends rotatably engaged with the frame. The second roller 2 is also positioned horizontally and parallel to the first roller 1. Both the first and second rollers 1 and 2 are rotated by a motor or other rotary drive element (not shown). The surface speed of the first roller 1 matches the conveying speed of the work material, ensuring uniform distribution of the coating applied to the work material. Furthermore, the position of the second roller 2 is adjusted by an adjustable linear drive element (not shown), such as an electric telescopic rod, to adjust the gap width between the second roller 2 and the first roller 1 to an appropriate range, thereby regulating the amount of coating applied to the work material surface.

[0045] Reference Figure 2 A paint groove 101 is formed between the first roller body 1 and the second roller body 2. The paint groove 101 is used to carry the clean paint to be roller-coated, and the bottom of the paint groove 101 is connected to the gap between the first roller body 1 and the second roller body 2, so that the paint in the paint groove 101 passes through the gap between the first roller body 1 and the second roller body 2 and adheres to the surface of the first roller body 1.

[0046] Reference Figure 3 The input end of the paint supply head 3 is connected to a paint bucket, which is used to deliver clean paint to the paint supply head 3. The paint in the paint bucket can be automatically replenished or manually replenished by production personnel. Figure 2 The output end of the paint supply head 3 is set downward toward the paint tank 101 to facilitate the replenishment of the paint in the paint bucket into the paint tank 101, so that the surface of the first roller body 1 is always adhered to an appropriate amount of paint for roller coating, thereby ensuring that the roller coating is carried out smoothly for a long time.

[0047] Reference Figure 3 The scraper blade 4 is located at the top of the first roller 1, and both ends of the scraper blade 4 are rotatably engaged with the frame. Two curved blade edges 401 are provided at the bottom of the scraper blade 4, and the two curved blade edges 401 are located on either side of the V-shaped bend 402. The curved blade edges 401 are adapted to the surface of the first roller 1, so that the scraper blade 4 is attached to the top surface of the first roller 1 via the two curved blade edges 401. In addition, the scraper blade 4 can be made of ceramic or nylon to prevent the scraper blade 4 and the first roller 1 from being easily damaged.

[0048] Reference Figure 4 and Figure 5The scraper blade 4 is provided with a V-shaped bend 402. The V-shaped bend 402 is arranged in a quasi-V shape, so that after contacting the scraper blade 4, the coating will flow in the direction Lcm and along the scraper blade 4 to the ends of the scraper blade 4. The V-shaped bend 402 is located in the middle of the scraper blade 4, and the ends of the scraper blade 4 extend to the ends of the first roller body 1. In addition, the V-shaped bend 402 and the coating groove 101 are distributed in sequence along the rotation direction of the first roller body 1, and the ends of the scraper blade 4 are closer to the second roller body 2 than to the axis of the first roller body 1. This allows the coating to flow to the ends of the scraper blade 4 and then flow down from the ends of the first roller body 1.

[0049] During roller coating, the rotation direction of the first roller body 1 is toward the V-shaped bend 402, so that the surface of the first roller body 1 or the paint adhered to the first roller body 1 is scraped off by the scraper blade 4 attached to the top of the first roller body 1 after being adhered to by impurities, or guided to the two ends of the scraper blade 4 along the direction Lcm, so that the paint will be separated from the first roller body 1 after a round of roller coating, and it is not easy to directly flow back to the paint tank 101 to participate in the next round of roller coating, so that impurities are not easy to have an adverse effect on long-term roller coating.

[0050] Reference Figure 1 The frame is provided with a blade adjusting member 11, and there are several blade adjusting members 11. The blade adjusting members 11 are distributed along the axis of the first roller body 1, and the blade adjusting members 11 are connected to each other through a rotating connecting plate 12. Both ends of the rotating connecting plate 12 are rotated to fit with the frame. The blade adjusting member 11 is a cylinder. The cylinder body of the blade adjusting member 11 is fixedly mounted on the rotating connecting plate 12, and the piston rod of the blade adjusting member 11 is rotated to fit with the scraper blade 4. Figure 5 There is a distance between the axis around which the piston rod rotates and the axis around which the scraper blade 4 rotates, that is, the two axes are set to be non-overlapping, so that the blade adjusting member 11 can change its own length to drive the scraper blade 4 to move, thereby making the curved blade edge 401 of the scraper blade 4 close to or away from the first roller body 1, so that when there are more impurities, the scraper blade 4 is close to the first roller body 1, and when there are fewer impurities, the scraper blade 4 is away from the first roller body 1, so as to take into account both the cleaning effect of impurities and the service life of the device.

[0051] Reference Figure 3The device for reducing roller coating impurities also includes a reflux trough 6 and a filter barrel 7. The reflux trough 6 is located at the bottom of the first roller body 1 and extends along the length of the first roller body 1. The two ends of the reflux trough 6 extend and protrude from the two ends of the first roller body 1, so as to receive the paint flowing down from the two ends of the first roller body 1. The filter barrel 7 is used to filter impurities from the paint flowing to the paint supply head 3. The discharge port of the reflux trough 6 is connected to the filter barrel 7 so as to transport the paint in the reflux trough 6 to the filter barrel 7. The filter barrel 7 extracts the paint through the circulation pump 31, and the extraction port of the circulation pump 31 is provided inside the filter barrel 7 so as to circulate the paint in the reflux trough 6 to the paint supply head 3 through the extraction port of the circulation pump 31. In addition, a three-way valve is provided at the connection between the circulation pump 31 and the paint barrel to adjust the paint flowing to the paint supply head 3.

[0052] For the filter barrel 7, refer to Figure 6 A filter screen 71 is provided in the barrel cavity of the filter barrel 7, and the inner diameter of the mesh of the filter barrel 7 is smaller than the particle size of the impurities. The filter screen 71 divides the barrel cavity of the filter barrel 7 into a first chamber 701 and a second chamber 702, and the input end and the output end of the filter barrel 7 are respectively connected to the first chamber 701 and the second chamber 702. The first chamber 701 and the second chamber 702 can only be connected in the barrel cavity through the filter screen 71, so that the impurities entering the first chamber 701 are blocked by the filter screen 71, so that the impurities are concentrated in the first chamber 701. In addition, in order to facilitate the cleaning of impurities in the first chamber 701, the filter screen 71 is connected to the top of the filter barrel 7 through a hanging ring, so that the filter screen 71 can be replaced and the impurities in the filter screen 71 can be cleaned.

[0053] In some embodiments, in order to further improve the filtering effect, an additional extraction filter (not shown in the figure) can be provided at the extraction port of the circulation pump 31, and the aperture of the extraction filter is smaller than the aperture of the filter 71, so as to further filter the impurities, making it less likely that the paint output from the output end of the filter barrel 7 contains impurities.

[0054] The implementation principle of the device for reducing roller coating impurities in Example 1 of the present application is as follows: when impurities adhere to the surface of the first roller body 1 or the paint, as the first roller body 1 rotates, the paint doped with impurities will move toward the position of the scraper blade 4, thereby causing the paint to be blocked by the scraper blade 4 attached to the surface of the first roller body 1.

[0055] Impurities adhering to the surface of the first roller body 1 will be scooped up and flow along the direction Lcm to the two ends of the first roller body 1 along with the obstructed coating, and leave the coating tank 101 from the two ends of the first roller body 1, so that the first roller body 1 can be more easily coated with the coating in the coating tank 101 that does not contain many impurities during the coating process, so that the production materials are less likely to be contaminated by impurities during the long-term coating process.

[0056] The paint leaving the paint tank 101 will enter the reflux tank 6 and the filter barrel 7 in turn, and after being filtered by the filter barrel 7, it will be refluxed to the paint supply head 3 again through the circulation pump 31, and clean paint will be added to the paint tank 101 through the paint supply head 3.

[0057] Example 2: Example 2 of the present application discloses a device for reducing impurities in roller coating, which includes all the technical features of Example 1 and also includes the following technical features: Reference Figure 7 and Figure 8 The frame is provided with two vibration assemblies 8, which are respectively located at the two ends of the scraper blade 4. The vibration assembly 8 includes a vibration slide 81, a vibration block 82 and a linear vibrator 83. The vibration slide 81 is fixedly mounted on the frame and has a vibration chute 801 formed therein. The vibration chute 801 extends along the blade edge of the scraper blade 4. The vibration block 82 slides and fits in the vibration chute 801, so that the vibration block 82 slides stably along the vibration chute 801.

[0058] The vibration slider 82 is rotatably coupled to the scraper blade 4, so that the scraper blade 4 is rotatably coupled to the frame via the vibration assembly 8. The housing of the linear vibrator 83 is fixedly mounted on the frame, and the output rod of the linear vibrator 83 is fixedly mounted on the vibration slider 82. The linear vibrator 83 extends or retracts the output rod, driving the vibration slider 82 to vibrate back and forth within the vibration chute 801, thereby driving the scraper blade 4 to vibrate along the blade edge, so that impurities adhering to the surface of the first roller body 1 are scooped up and flow along the coating along the direction Lcm to the return trough body 6.

[0059] In addition, in order to facilitate the resetting of the scraper blade 4, a resetting elastic member 821 is further provided in the vibration chute 801. The resetting elastic member 821 is a spring, and the axis of the resetting elastic member 821 is arranged along the extension direction of the vibration chute 801, and the two ends of the resetting elastic member 821 are respectively fixedly mounted on the vibration slider 82 and the inner wall of the vibration chute 801, so that when the scraper blade 4 deviates from the resetting, the elastic force of the resetting elastic member 821 resets the scraper blade 4, thereby making it easier to ensure that the scraper blade 4 is more easily fitted tightly to the first roller body 1 when no vibration is required.

[0060] The implementation principle of the device for reducing roller coating impurities in Example 2 of the present application is: by setting a vibration component 8 to drive the scraper blade 4 to vibrate along the blade edge direction, it is beneficial to remove impurities adhering to the surface of the first roller body 1, thereby reducing the adverse effects of impurities on the roller coating effect.

[0061] Example 3: Example 3 of the present application discloses a scraper blade that can be used in the device for reducing roller coating impurities described in Example 1 or Example 2. In addition to all the technical features of the scraper blade 4 described in Example 1, it also includes the following technical features: Reference Figure 9 and Figure 10 The scraper blade 4 is provided with a drainage groove 403, which is arranged close to the blade edge of the scraper blade 4, and the two ends of the drainage groove 403 extend to the two ends of the scraper blade 4 respectively, so that the impurities mixed in the paint and the paint that has condensed into blocks can easily enter the interior of the drainage groove 403 when flowing along the extension direction of the scraper blade 4, thereby making the impurities and the paint that has condensed into blocks separate from the first roller body 1 in time after contacting the scraper blade 4, which is beneficial to reduce the contamination of the production material by impurities or the occurrence of coating grooves.

[0062] Example 4: Example 4 of the present application discloses a reflow trough body that can be used to replace the reflow trough body 6 in the device for reducing roller coating impurities described in Example 1 or Example 2.

[0063] Reference Figure 11 and Figure 12 The installation position of the reflux trough body 6 is at both ends of the first roller body 1. The reflux trough body 6 extends along the conveying direction of the production material, and the reflux trough body 6 protrudes from both ends of the first roller body 1. The length of the reflux trough body 6 is greater than the diameter of the first roller body 1, so that the paint flows into the reflux trough body 6 from both ends of the first roller body 1, and it is not easy for the paint to be splashed to the surroundings due to the excessive rotation speed of the first roller body 1.

[0064] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for reducing impurities in roller coating, characterized in that: It comprises a frame, a first roller body (1), a second roller body (2), a coating material supply head (3) and a scraper blade (4); The first roller body (1) and the second roller body (2) are both rotatably coupled to the frame, a coating tank (101) is formed between the first roller body (1) and the second roller body (2), and the coating supply head (3) is used to supply coating to the coating tank (101); The scraper blade (4) is attached to the top surface of the first roller body (1), and the scraper blade (4) is provided with a V-shaped bend (402), and the V-shaped bend (402) is located in the middle of the scraper blade (4). The two ends of the scraper blade (4) extend to the two ends of the first roller body (1) respectively, and the rotation direction of the first roller body (1) is toward the V-shaped bend (402), and the V-shaped bend (402) and the paint groove (101) are distributed in sequence along the rotation direction of the first roller body (1).

2. The device for reducing roller coating impurities according to claim 1, characterized in that: The invention also includes a reflux tank (6) and a filter barrel (7). The reflux tank (6) is used to receive the paint flowing down from both ends of the first roller body (1). The reflux tank (6) is located at the bottom of the first roller body (1). The reflux tank (6) is connected to the paint supply head (3) through a circulation pump (31). The filter barrel (7) is used to filter impurities in the paint flowing to the paint supply head (3).

3. The device for reducing roller coating impurities according to claim 2, characterized in that: The barrel cavity of the filter barrel (7) is divided into a first chamber (701) and a second chamber (702) by a filter screen (71); the first chamber (701) is connected to the reflux tank (6); and the second chamber (702) is connected to the circulation pump (31).

4. The device for reducing roller coating impurities according to claim 1, characterized in that: The frame is provided with a blade adjusting member (11), and the blade adjusting member (11) is used to move the scraper blade (4) toward or away from the first roller body (1).

5. The device for reducing impurities in roller coating according to claim 4, characterized in that: The scraper blade (4) is rotatably engaged with the frame, the blade adjusting member (11) is a cylinder, one end of the blade adjusting member (11) is rotatably engaged with the frame, and the other end of the blade adjusting member (11) is rotatably engaged with the scraper blade (4).

6. The device for reducing impurities in roller coating according to claim 1, characterized in that: The frame is provided with a vibration component (8), and the vibration component (8) is used to make the scraper blade (4) vibrate along the blade edge direction of the scraper blade (4).

7. The device for reducing roller coating impurities according to claim 6, characterized in that: The vibration assembly (8) includes a vibration slide (81), a vibration slider (82) and a linear vibrator (83); the vibration slide (81) is mounted on a machine frame; the vibration slider (82) slides along the blade edge of the scraper blade (4) and is engaged with the vibration slide (81); the scraper blade (4) is rotated and engaged with the machine frame through the vibration slider (82); one end of the linear vibrator (83) is mounted on the machine frame, and the other end of the linear vibrator (83) is mounted on the vibration slider (82).

8. The device for reducing impurities in roller coating according to claim 7, characterized in that: A reset elastic member (821) is provided between the vibration slider (82) and the vibration slide seat (81), and both the vibration slider (82) and the vibration slide seat (81) are mounted on the reset elastic member (821).

9. The device for reducing roller coating impurities according to claim 1, characterized in that: The scraper blade (4) is provided with a drainage groove (403), and both ends of the drainage groove (403) extend to both ends of the scraper blade (4) respectively.

10. The device for reducing impurities in roller coating according to claim 1, characterized in that: The scraper blade (4) is made of ceramic or nylon.

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