Corona treatment device for coated paper

Abstract

The invention relates to the technical field of coated paper production, and discloses a coated paper corona treatment device which comprises a corona device, two side plates are fixed to the side face of the corona device, a plurality of guide rollers are rotationally arranged between the two side plates, and an electrostatic discharge assembly is arranged between the two side plates. The electrostatic discharge assembly is composed of a wiping structure and a water storage box, the wiping structure comprises water absorption cloth, water is stored in the water storage box, the bottom face of the water absorption cloth is immersed in the water, and a plurality of overflow holes are formed in one side of the water storage box. The wet water-absorbing cloth is used for wiping the coated paper subjected to corona treatment, surface charges are rapidly dispersed through a micro-conductive layer formed by water molecules, meanwhile, polar molecules actively adsorb heterogeneous charges to achieve neutralization and eliminate interference of static accumulation on printing and compounding processes, in addition, dust particles adsorbed on the surface of the coated paper are physically wiped away through the wiping action, and the dust removal effect is good. Secondary pollution caused by electrostatic adsorption is avoided, and the surface cleanliness of the product is improved.

Description

Technical Field

[0001] This invention relates to the field of coated paper production technology, and in particular to a corona treatment device for coated paper. Background Technology

[0002] The corona treatment device for coated paper is a device that modifies the surface of coated paper through high-voltage discharge. Its core function is to increase the surface energy of coated paper and enhance the adhesion of materials such as inks and adhesives, thereby improving the effects of printing, laminating, coating and other processes.

[0003] A search revealed that Chinese patent CN222554246U discloses a corona treatment device for coated paper, comprising a corona machine and a cleaning mechanism. The corona machine includes a machine body, a roller, and a chute. The roller is installed inside the machine body, and the chute is located on the top of the machine body. The cleaning mechanism is located on the top of the machine body and includes a housing, a lead screw, a motor, a slider, and cleaning components. The lead screw is installed inside the housing, and the motor is installed at the outer end of the lead screw. A slider passing through the chute is installed on the lead screw, and a cleaning component is installed at the lower end of the slider. In this solution, the motor drives the lead screw to rotate, which in turn drives the slider to reciprocate. The slider simultaneously drives the cleaning component to reciprocate. The cleaning component contacts the coated paper on the roller to clean the surface of the coated paper, preventing dust from adhering to the surface and affecting the corona treatment effect. However, in practical use, the above solution still has the following shortcomings: Corona treatment ionizes air using a high-voltage electric field, generating high-energy electrons, ions, and free radicals. These active particles bombard the surface of the coated paper (such as polyethylene or polypropylene layers), causing the material's molecular chains to break, forming polar groups (such as hydroxyl and carbonyl groups) and altering the surface microstructure. During this process, the electron transfer efficiency of non-conductive polymer materials varies: when high-energy particles knock electrons out of the material surface, if the electrons inside the material cannot be replenished quickly (due to the poor conductivity of polymers), positive charges will accumulate on the surface; conversely, if electrons are trapped inside the material, negative charges may accumulate. Static electricity on the coated paper easily attracts dust, and the dust attracted by static electricity can embed in the adhesive layer, forming microbubbles or defects, reducing the peel strength and barrier properties of the composite film. The corona treatment device for coated paper proposed in the above scheme cannot solve this problem.

[0004] Therefore, it is necessary to design a corona treatment device for coated paper to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a corona treatment device for coated paper.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A corona treatment device for coated paper includes a corona device, two side plates fixed to the side of the corona device, a plurality of guide rollers rotatably arranged between the two side plates, and an electrostatic release component arranged between the two side plates. The electrostatic release component consists of a wiping structure and a water storage box. The wiping structure includes an absorbent cloth, the water storage box stores water, the bottom surface of the absorbent cloth is immersed in the water, and a plurality of overflow holes are opened on one side of the water storage box. The water storage box is equipped with a water squeezing component to squeeze out excess water from the absorbent cloth.

[0007] As a preferred embodiment of the present invention, the wiping structure further includes two mounting plates, both of which are fixed on the water storage box and are positioned opposite each other. A motor is arranged on one of the mounting plates, and the motor is connected to the mounting plate via a bracket. Four rotatable transmission rollers are arranged between the two mounting plates. A first gear is fixedly sleeved on the output shaft of the motor, and a second gear is fixedly sleeved on one of the transmission rollers. The first gear and the second gear mesh with each other. The four transmission rollers are connected by a transmission belt, and the absorbent cloth is attached to the outer surface of the transmission belt.

[0008] As a preferred embodiment of the present invention, the water-squeezing assembly includes a fixing plate, which is fixed to a water storage box. An outer cylinder is fixed to one end of the fixing plate away from the water storage box. A movable rod is slidably arranged in the outer cylinder, and the outer cylinder and the movable rod are connected by a spring. One end of the movable rod extends to the outside of the outer cylinder and is fixed with a water-squeezing plate, which is in contact with the absorbent cloth.

[0009] As a preferred embodiment of the present invention, the end of the dewatering plate away from the absorbent cloth is provided with an arc-shaped water-guiding lip, which is positioned directly opposite the water storage box.

[0010] As a preferred embodiment of the present invention, a filter assembly is provided between the two side plates. The filter assembly consists of a filter structure, a drive structure, and a turbulence-disrupting structure. The filter structure is arranged on one side of the water storage box and is used to filter dust and water. The drive structure is arranged on the side of one of the mounting plates and consists of a moving part and a resetting part. The moving part includes a movable rack, and the resetting part is used to control the position of the rack during the resetting process. The rack meshes with a first gear. The turbulence-disrupting structure is arranged on the side of the water storage box and is used to make the water in the water storage box flow towards a plurality of overflow holes. The turbulence-disrupting structure includes a pusher plate and a pusher plate. The pusher plate is placed inside the water storage box, and the pusher plate is slidably arranged on the side of the water storage box and has an inclined surface. The rack and the pusher plate are connected by a connecting rope.

[0011] As a preferred embodiment of the present invention, the filtration structure includes a water filter box, which is fixed to one side of the water storage box and located below several overflow holes. The water filter box and the water storage box are connected by a return pipe. A partition is fixed inside the water filter box, and several through holes are provided on the partition. Filter cotton is arranged on the partition.

[0012] As a preferred embodiment of the present invention, the moving part further includes a first slide rail, which is fixed to the side of the mounting plate. A first slider is slidably disposed on the first slide rail. Two guide rods are fixed to the bottom surface of the first slider. Limit caps are fixed to the bottom ends of the two guide rods. Sliding plates are slidably sleeved on the two guide rods. The rack and the sliding plate are connected by a connecting rod. A first magnetic block is fixed to the end of the rack.

[0013] As a preferred embodiment of the present invention, the reset part includes a second slide rail, the second slide rail is fixed to the side of the mounting plate, a second slider is slidably disposed on the second slide rail, a second magnetic block is fixed to the bottom surface of the second slider, and the second slider is connected to the mounting plate by a tension spring.

[0014] As a preferred embodiment of the present invention, the turbulence structure further includes a fixing rod, one end of which is connected to the push plate, and the other end of which is positioned opposite the inclined surface of the push plate. The fixing rod passes through the fixing plate and is slidably connected to the fixing plate. A collar is fixedly sleeved on the fixing rod, and the collar is connected to the fixing plate by a second spring. The push plate is connected to the water storage box by a second tension spring.

[0015] As a preferred embodiment of the present invention, the water pusher plate is provided with a plurality of openings, and the side of the water pusher plate is provided with a plurality of rotatable movable plates, and the plurality of movable plates are respectively positioned opposite the plurality of openings.

[0016] The present invention has the following beneficial effects: 1. Wiping the corona-treated coated paper with a damp absorbent cloth allows the surface charge to be quickly dispersed through the micro-conductive layer formed by water molecules. At the same time, polar molecules actively adsorb opposite charges to achieve neutralization, eliminating the interference of static electricity accumulation on printing and lamination processes. In addition, the wiping action physically removes dust particles adsorbed on the surface of the coated paper, avoiding secondary pollution caused by static electricity adsorption, improving the cleanliness of the product surface, and reducing defects in subsequent processing. 2. The spring-driven squeezing plate and the arc-shaped water-guiding lip squeeze out excess water from the absorbent cloth in real time, ensuring that the cloth is kept moist rather than dripping, and preventing moisture residue on the surface of the coated paper from causing curling, sticking or blurry printing. 3. The push plate reciprocates to push the water flow in the water storage box, and the dust brought in by the water-absorbing cloth is guided into the water filter box through the overflow hole. The filter cotton intercepts impurities and realizes water recycling, reducing water consumption and wastewater discharge. The push plate automatically reciprocates by using a motor-driven gear-rack mechanism and magnetic block adsorption and separation. No additional power source is required. The structure is compact and the operation is reliable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a corona treatment device for coated paper proposed in this invention; Figure 2 This is a cross-sectional view of a corona treatment device for coated paper proposed in this invention. Figure 3 Schematic diagram of the electrostatic discharge assembly Figure 1 ; Figure 4 for Figure 3 Enlarged view of the structure at point A; Figure 5 Schematic diagram of the electrostatic discharge assembly Figure 2 ; Figure 6 This is a cross-sectional view of the electrostatic discharge assembly. Figure 7 for Figure 6 Enlarged view of the structure at point B; Figure 8 This is a structural diagram of the water filter box, partition, and filter cotton. Figure 9 This is a schematic diagram of the dewatering assembly. Figure 10 This is a schematic diagram of the water pusher plate. Figure 11 This is a schematic diagram of the driving structure; Figure 12 for Figure 11 Enlarged view of the structure at point C.

[0018] In the diagram: 1. Corona discharge device; 11. Side plate; 12. Guide roller; 21. Mounting plate; 22. Motor; 221. First gear; 23. Transmission roller; 24. Transmission belt; 25. Absorbent cloth; 31. Water storage box; 311. Overflow hole; 32. Filter box; 33. Partition plate; 34. Filter cotton; 35. Return pipe; 41. First slide rail; 42. First slider; 43. Guide rod; 44. Limit cap; 45. Sliding plate; 46. Rack; 461. Connection 462. Rod; 463. First magnet; 464. Connecting rope; 47. Second gear; 51. Second slide rail; 52. Second slider; 521. Second magnet; 53. Tension spring one; 61. Fixed plate; 62. Outer cylinder; 63. Movable rod; 64. Spring one; 65. Squeezing plate; 651. Water guide lip; 71. Pushing plate; 711. Opening; 712. Movable plate; 72. Fixed rod; 721. Collar; 73. Spring two; 74. Push plate; 75. Tension spring two. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figure 1-12 A corona treatment device for coated paper includes a corona device 1. Two side plates 11 are fixed to the side of the corona device 1, and a plurality of guide rollers 12 are rotatably arranged between the two side plates 11. When the coated paper corona treatment device proposed in this invention is in use, the coated paper passes through the corona device 1 and is corona treated by the corona device 1. The specific structure and working principle of the corona device 1 are existing technologies, and the implementation method adopts conventional means. It is not shown in the figure and will not be described in detail here. An electrostatic discharge assembly is provided between the two side plates 11. The electrostatic discharge assembly consists of a wiping structure and a water storage box 31. The wiping structure includes an absorbent cloth 25. The coated paper, after corona treatment, will contact the top surface of the absorbent cloth 25. Water is stored in the water storage box 31, and the bottom surface of the absorbent cloth 25 is immersed in the water. Several overflow holes 311 are provided on one side of the water storage box 31 (e.g., Figure 5 As shown), the wiping structure also includes two mounting plates 21, both of which are fixed to the water storage box 31 and are positioned opposite each other. A motor 22 is mounted on one of the mounting plates 21, and the motor 22 is connected to the mounting plate 21 via a bracket. Four rotatable transmission rollers 23 are arranged between the two mounting plates 21. A first gear 221 (as shown) is fixedly sleeved on the output shaft of the motor 22. Figure 11As shown), a second gear 47 is fixedly sleeved on one of the transmission rollers 23, the first gear 221 meshes with the second gear 47, the four transmission rollers 23 are connected by transmission belt 24, and the absorbent cloth 25 is attached to the outer surface of the transmission belt 24. When performing antistatic treatment on the coated paper, the operator starts the motor 22. When the motor 22 runs, it drives the corresponding transmission rollers 23 to rotate via the meshing first gear 221 and second gear 47. The four transmission rollers 23 are connected by a transmission belt 24, allowing them to jointly drive the transmission belt 24 to rotate. The absorbent cloth 25 attached to the surface of the transmission belt 24 rotates accordingly. During rotation, the absorbent cloth 25 wipes the corona-treated coated paper. When the bottom of the absorbent cloth 25 rotates into the water storage box 31, it is immersed in water and absorbs moisture. When the wet absorbent cloth 25 comes into contact with the coated paper, the cloth... When water comes into contact with a charged object, it forms a micro-conductive layer. On the one hand, its own conductivity quickly disperses the charge accumulated on the object's surface to the surrounding environment, preventing excessive local charge density. On the other hand, as polar molecules, water molecules have the characteristic that their positive and negative charge centers do not coincide, allowing them to actively adsorb opposite charges in the air (such as attracting negative ions when positively charged). Through charge neutralization reactions, the net charge on the object's surface is reduced, ultimately achieving rapid elimination of static electricity. This design can perform antistatic treatment on corona-treated coated paper. In addition, wiping with a damp cloth can not only eliminate static electricity but also remove dust adsorbed on the surface of the coated paper, thus cleaning it. The water storage box 31 is equipped with a water squeezing component for squeezing out excess water from the absorbent cloth 25. The water squeezing component includes a fixing plate 61, which is fixed to the water storage box 31. An outer cylinder 62 is fixed to the end of the fixing plate 61 away from the water storage box 31. A movable rod 63 is slidably arranged in the outer cylinder 62, and the outer cylinder 62 and the movable rod 63 are connected by a spring 64. One end of the movable rod 63 extends to the outside of the outer cylinder 62 and is fixed with a water squeezing plate 65. The water squeezing plate 65 is in contact with the absorbent cloth 25. An arc-shaped water guide lip 651 is provided at the end of the water squeezing plate 65 away from the absorbent cloth 25. The water guide lip 651 is positioned directly opposite the water storage box 31. Specifically, such as Figure 6 and Figure 7As shown, the movable rod 63 always tends to move outward from the outer cylinder 62 under the action of the spring 64, which makes the dewatering plate 65 always able to press down the absorbent cloth 25. After the absorbent cloth 25 has finished absorbing water, the dewatering plate 65 can squeeze out the excess water in the absorbent cloth 25, avoiding too much water on the absorbent cloth 25, and thus preventing too much water from remaining on the surface of the coated paper. The absorbent cloth 25 is in a damp state after being squeezed out, which can achieve the functions of removing static electricity and dust, and also prevent water residue. In addition, the dewatering plate 65 is provided with an arc-shaped water guide lip 651, which plays a role in guiding the water flow. The squeezed water can drip down along the water guide lip 651 into the water storage box 31. A filter assembly is provided between the two side plates 11. The filter assembly consists of a filter structure, a drive structure, and a turbulence structure. The filter structure is arranged on one side of the water storage box 31 and is used to filter dust and water. The filter structure includes a water filter box 32, which is fixed on one side of the water storage box 31 and is located below several overflow holes 311. The water filter box 32 and the water storage box 31 are connected by a return pipe 35. The filtered water can flow back into the water storage box 31 through the return pipe 35. A partition 33 is fixed inside the water filter box 32, and several through holes are opened on the partition 33. Filter cotton 34 is arranged on the partition 33. During the flow of water, it can carry away the dust attached to the surface of the absorbent cloth 25 and clean the absorbent cloth 25. Furthermore, water mixed with dust can flow into the water filter box 32 through several overflow holes 311. The water filter box 32 is provided with filter cotton 34, which filters the water flow and purifies the water flow. The drive structure is arranged on the side of one of the mounting plates 21. The drive structure consists of a moving part and a resetting part. The moving part includes a movable rack 46, and the resetting part is used to control the position of the rack 46 during the resetting process. The rack 46 meshes with the first gear 221. The turbulence structure is arranged on the side of the water storage box 31 to make the water in the water storage box 31 flow towards a plurality of overflow holes 311. The moving part also includes a first slide rail 41, which is fixed to the side of the mounting plate 21. A first slider 42 is slidably arranged on the first slide rail 41. The bottom of the first slider 42... The mounting plate 21 has two guide rods 43 fixed on its surface. Each guide rod 43 has a limit cap 44 fixed at its bottom end. A sliding plate 45 is slidably mounted on the two guide rods 43. A rack 46 is connected to the sliding plate 45 by a connecting rod 461. A first magnetic block 462 is fixed at the end of the rack 46. The reset part includes a second slide rail 51, which is fixed to the side of the mounting plate 21. A second slider 52 is slidably mounted on the second slide rail 51. A second magnetic block 521 is fixed on the bottom surface of the second slider 52. The second slider 52 is connected to the mounting plate 21 by a tension spring 53. The turbulence-inducing structure includes a pusher plate 71 and a pusher plate 74. The pusher plate 71 is placed inside the water storage box 31. Several openings 711 are provided on the pusher plate 71. Several rotatable movable plates 712 are provided on the side of the pusher plate 71, each movable plate 712 facing one of the openings 711. The pusher plate 74 is slidably disposed on the side of the water storage box 31 (e.g., ...). Figure 4 (As shown), and the push plate 74 is provided with an inclined surface. The rack 46 is connected to the push plate 74 by a connecting rope 463. The turbulence structure also includes a fixing rod 72. One end of the fixing rod 72 is connected to the push plate 71, and the other end of the fixing rod 72 is set opposite to the inclined surface of the push plate 74. The fixing rod 72 passes through the fixing plate 61 and is slidably connected to the fixing plate 61. A collar 721 is fixedly sleeved on the fixing rod 72 (as shown). Figure 4 As shown), the collar 721 is connected to the fixed plate 61 by a spring 73, and the push plate 74 is connected to the water storage box 31 by a tension spring 75. The invention also includes a filter assembly for filtering dust from water, specifically, such as... Figure 4 and Figure 11 As shown, in the initial state, under the action of the second tension spring 75, the push plate 74 is in a position away from the fixed rod 72. At this time, the push plate 74 applies tension to the rack 46 through the connecting rope 463. At this time, the end of the rack 46 meshes with the first gear 221. When the motor 22 runs, the first gear 221 can drive the rack 46 to move. When the rack 46 moves, it can pull the push plate 74 through the connecting rope 463, causing the push plate 74 to move. When the push plate 74 moves, the inclined part of the push plate 74 will squeeze the fixed rod 72, causing the fixed rod 72 to move. When the fixed rod 72 moves, it can drive the push plate 71 to move. When the first magnetic block 462 on the rack 46 moves to the position facing the second magnetic block 521, the second magnetic block 521 will attract the first magnetic block 462, so that the first magnetic block 462 and the rack 46... When the rack 46 moves upward, it will separate from the first gear 221. When the rack 46 separates from the first gear 221, the first gear 221 no longer constrains the position of the rack 46. At this time, the push plate 74 and the rack 46 will be reset under the action of the tension spring 75. During the reset process of the rack 46, the rack 46 will remain separated from the first gear 221 under the attraction of the first magnetic block 462 and the second magnetic block 521. When the second slider 52 moves to the limit position, the second magnetic block 521 can no longer move, but the rack 46 will continue to perform the reset action. At this time, the first magnetic block 462 will move with the rack 46 and separate from the second magnetic block 521. When the first magnetic block 462 separates from the second magnetic block 521, the rack 46 will fall naturally and mesh with the first gear 221 again. Based on the above process, the first gear 221 can drive the rack 46 to reciprocate. When the rack 46 reciprocates, it can pull the push plate 74 to reciprocate via the connecting rope 463, ultimately causing the push plate 71 to reciprocate inside the water storage box 31. During this reciprocating motion, the push plate 71 can push the water flow, causing it to move towards several overflow holes 311. Furthermore, as... Figure 10 As shown, when the push plate 71 pushes the water flow, several movable plates 712 adhere to the push plate 71 under the resistance of the water flow. At this time, the push plate 71 and several movable plates 712 together form a complete plate structure, which can smoothly push the water flow. When the push plate 71 resets, the movable plates 712 can also flip under the resistance of the water flow and move away from the opening 711. At this time, the water flow can pass through the opening 711, thereby reducing the resistance encountered by the push plate 71 when it resets, reducing the load fluctuation and energy loss of the motor 22, while maintaining a moderate water flow to prevent sedimentation and blockage. Ultimately, under the premise of ensuring the cleaning effect, the equipment life is extended, the operating noise is reduced, and the overall energy efficiency is improved.

[0021] The specific working principle of this invention is as follows: After being treated by the corona device 1, the coated paper generates static electricity on its surface and attracts dust. It then comes into contact with the damp absorbent cloth 25 in the static discharge assembly between the side plates 11. The motor 22 drives the transmission belt 24 via gear transmission, causing the absorbent cloth 25 attached to it to rotate cyclically. After the bottom of the cloth is immersed in the water storage box 31 and absorbs water, the conductivity of water molecules neutralizes the surface charge of the coated paper, while simultaneously wiping away dust. The squeezing assembly uses a spring-driven squeezing plate 65 to squeeze out excess water from the cloth in real time, preventing the coated paper from becoming too wet. The water guide lip 651 guides the water flow back to the water storage box 31. In the filter assembly, the gear-rack mechanism driven by the motor 22 drives the pusher plate 74 to move reciprocally, pushing... The inclined surface of plate 74 presses against the fixing rod 72, causing the pusher plate 71 to reciprocate within the water storage box 31. During the push, the movable plate 712 adheres to the water flow resistance, forming a rigid plate that efficiently pushes the water flow to flush away dust. During the reset, the movable plate 712 flips to form a hollow structure, reducing reverse resistance. Water mixed with dust flows through the overflow hole 311 into the filter box 32, where it is purified by the filter cotton 34 and recycled. The entire process achieves adaptive adjustment of the shape of the pusher plate 71 through mechanical linkage, reducing the energy consumption and load fluctuation of the motor 22 while ensuring the cleaning effect. Ultimately, a closed-loop system of static elimination, surface dust removal, and water resource recycling is formed, significantly improving the post-processing quality and production economy of coated paper.

[0022] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A corona treatment device for coated paper, characterized in that, The device includes a corona device (1), which has two side plates (11) fixed on its side. Several guide rollers (12) are rotatably arranged between the two side plates (11). An electrostatic release assembly is arranged between the two side plates (11). The electrostatic release assembly consists of a wiping structure and a water storage box (31). The wiping structure includes an absorbent cloth (25). Water is stored in the water storage box (31). The bottom surface of the absorbent cloth (25) is immersed in the water. Several overflow holes (311) are opened on one side of the water storage box (31). The water storage box (31) is equipped with a water squeezing component for squeezing out excess water from the absorbent cloth (25).

2. The corona treatment device for coated paper according to claim 1, characterized in that, The wiping structure also includes two mounting plates (21), both of which are fixed on the water storage box (31) and are arranged opposite each other. A motor (22) is arranged on one of the mounting plates (21), and the motor (22) is connected to the mounting plate (21) through a bracket. Four rotatable transmission rollers (23) are arranged between the two mounting plates (21). A first gear (221) is fixedly sleeved on the output shaft of the motor (22), and a second gear (47) is fixedly sleeved on one of the transmission rollers (23). The first gear (221) and the second gear (47) mesh with each other. The four transmission rollers (23) are connected by a transmission belt (24), and the absorbent cloth (25) is attached to the outer surface of the transmission belt (24).

3. The corona treatment device for coated paper according to claim 2, characterized in that, The water-squeezing assembly includes a fixing plate (61) fixed on a water storage box (31). An outer cylinder (62) is fixed to one end of the fixing plate (61) away from the water storage box (31). A movable rod (63) is slidably arranged in the outer cylinder (62), and the outer cylinder (62) and the movable rod (63) are connected by a spring (64). One end of the movable rod (63) extends to the outside of the outer cylinder (62) and is fixed with a water-squeezing plate (65). The water-squeezing plate (65) is in contact with the absorbent cloth (25).

4. The corona treatment device for coated paper according to claim 3, characterized in that, The water-squeezing plate (65) has an arc-shaped water-guiding lip (651) at one end away from the absorbent cloth (25), and the water-guiding lip (651) is positioned opposite the water storage box (31).

5. The corona treatment device for coated paper according to claim 3, characterized in that, A filter assembly is provided between the two side plates (11). The filter assembly consists of a filter structure, a drive structure, and a turbulence structure. The filter structure is arranged on one side of the water storage box (31) and is used to filter dust and water. The drive structure is arranged on the side of one of the mounting plates (21). The drive structure consists of a moving part and a resetting part. The moving part includes a movable rack (46). The resetting part is used to control the position of the rack (46) during the resetting process. The rack (46) and the first gear (221) The turbulence structure is arranged on the side of the water storage box (31) to make the water in the water storage box (31) flow in the direction of several overflow holes (311). The turbulence structure includes a push plate (71) and a push plate (74). The push plate (71) is placed inside the water storage box (31). The push plate (74) is slidably arranged on the side of the water storage box (31) and has an inclined surface. The rack (46) and the push plate (74) are connected by a connecting rope (463).

6. The corona treatment device for coated paper according to claim 5, characterized in that, The filtration structure includes a water filter box (32), which is fixed on one side of the water storage box (31) and located below several overflow holes (311). The water filter box (32) and the water storage box (31) are connected by a return pipe (35). A partition (33) is fixed inside the water filter box (32), and several through holes are opened on the partition (33). Filter cotton (34) is arranged on the partition (33).

7. The corona treatment apparatus for coated paper according to claim 5, characterized in that, The moving part also includes a first slide rail (41), which is fixed to the side of the mounting plate (21). A first slider (42) is slidably disposed on the first slide rail (41). Two guide rods (43) are fixed on the bottom surface of the first slider (42). Limit caps (44) are fixed at the bottom ends of the two guide rods (43). Sliding plates (45) are slidably sleeved on the two guide rods (43). The rack (46) and the sliding plate (45) are connected by a connecting rod (461). A first magnetic block (462) is fixed at the end of the rack (46).

8. The corona treatment apparatus for coated paper according to claim 7, characterized in that, The reset part includes a second slide rail (51), which is fixed to the side of the mounting plate (21). A second slider (52) is slidably disposed on the second slide rail (51). A second magnet (521) is fixed on the bottom surface of the second slider (52). The second slider (52) is connected to the mounting plate (21) by a tension spring (53).

9. The corona treatment device for coated paper according to claim 5, characterized in that, The turbulence structure also includes a fixed rod (72), one end of which is connected to the push plate (71), and the other end of which is set opposite to the inclined surface of the push plate (74). The fixed rod (72) passes through the fixed plate (61) and is slidably connected to the fixed plate (61). A collar (721) is fixedly sleeved on the fixed rod (72), and the collar (721) is connected to the fixed plate (61) by a second spring (73). The push plate (74) is connected to the water storage box (31) by a second tension spring (75).

10. The corona treatment apparatus for coated paper according to claim 5, characterized in that, The push plate (71) has several openings (711), and the side of the push plate (71) is provided with several rotatable movable plates (712), and the movable plates (712) are respectively positioned opposite the openings (711).

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