Coating and shaping device for dialyzing paper processing and working method of coating and shaping device

Abstract

The invention discloses a coating and shaping device for dialyzing paper processing and a working method of the coating and shaping device, and belongs to the technical field of dialyzing paper processing. The device comprises a machine shell, a mounting frame is fixedly connected to the top of the machine shell, a coating mechanism is arranged in the mounting frame, the coating mechanism comprises two coating heads used for spraying different coatings, an electrostatic field generator is arranged on one side of the coating mechanism, a drying mechanism is arranged on one side of the electrostatic field generator, and the drying mechanism is arranged on the other side of the electrostatic field generator. An airflow jacking assembly is arranged below the coating mechanism; during coating, the two coating heads are arranged to send out two coatings with different conductivity, the two coatings generate displacement of different distances in an electrostatic field under the action of the electrostatic field, fibrous coatings with different lengths are obtained, mutual penetration mixing of the two coatings is achieved, and the coating quality is improved. A network shape is formed and deposited on fiber intersections on the surface of the dialyzing paper, so that the same effect of reducing falling scraps is achieved, and meanwhile, the use amount of the coating is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of dialysis paper processing, and in particular to a coating and shaping device for dialysis paper processing and a working method thereof. Background Art

[0002] Dialysis paper is a specialty paper designed specifically for medical packaging, featuring key properties such as high air permeability, high strength, and microbial barrier properties. It is primarily used in terminally sterilized packaging for medical devices and pharmaceuticals, ensuring that sterilizing agents can penetrate the contents during sterilization while effectively blocking microbial intrusion prior to use, maintaining internal sterility.

[0003] During the processing of dialysis paper, it needs to be coated and sized. The purpose of this coating is to "bond" the loose fine fibers on the surface, reducing fiber shedding during slitting, laminating, transportation, and use, and avoiding contamination of sterile medical devices. Existing coating methods generally use a coating roller in direct contact with the dialysis paper for roll coating. Due to the contact pressure of the roller, this roll coating method often causes the coating to penetrate too deeply into the dialysis paper, blocking the fiber pores and affecting the air permeability of the dialysis paper. Simply considering reducing the amount of coating makes it difficult to ensure the stable formation of the coating, resulting in a decrease in the ability to bond and block paper scrap fibers. Summary of the Invention

[0004] The present invention provides a coating and shaping device for dialysis paper processing and a working method thereof, which can solve the problem in the prior art that the coating method of dialysis paper coating equipment is difficult to avoid excessive penetration of dialysis paper while ensuring the bonding and blocking capacity of paper scrap fibers.

[0005] The present invention provides a coating and shaping device for dialysis paper processing, comprising a casing, both ends of which are provided with through slots for dialysis paper to pass through, a mounting frame fixedly connected to the top of the casing, a partition plate fixedly connected to the inner wall of the mounting frame, the partition plate dividing the inner cavity of the mounting frame into a coating cavity and a cleaning cavity, a coating mechanism provided in the coating cavity, the coating mechanism including two coating heads for spraying different coatings, an electrostatic field generator provided on one side of the coating mechanism, the dialysis paper passing through the inside of the electrostatic field generator, a drying mechanism provided on one side of the electrostatic field generator for drying the top surface of the coated dialysis paper, and an airflow lifting component provided below the coating mechanism for conveying airflow to the bottom of the dialysis paper.

[0006] As a further solution of the present invention: the airflow lifting assembly includes a positioning frame, the bottom of the positioning frame is fixedly connected to an extended air guide plate, one side of the bottom of the extended air guide plate is tilted upward, the top of the extended air guide plate is provided with a plurality of air supply grooves, the inner walls of the plurality of air supply grooves are all tilted, a supply fan is fixedly installed inside the extended air guide plate, and an air inlet groove is provided on the other side of the bottom of the extended air guide plate.

[0007] As a further solution of the present invention: the coating mechanism includes an inner partition, which divides the coating chamber into an installation chamber and two paint chambers for storing paint. The installation chamber is located below the two paint chambers. A coating unit is fixedly installed on the inner wall of the installation chamber. The coating unit includes a packaging box. Two coating components are arranged inside the packaging box, and two coating heads are respectively connected to the output ends of the two coating components.

[0008] As a further solution of the present invention: the coating assembly includes a fixed plate, an air blowing nozzle is fixedly installed in the middle of the fixed plate, a closing cover is fixedly connected between the top edge of the air blowing nozzle and the bottom of the fixed plate, a plurality of air permeable grooves are provided on the top edge of the closing cover, a vibrating atomizer and a liquid level meter are fixedly installed in the inner cavity of the closing cover, a paint pump is fixedly installed on the top of the fixed plate, the output end of the paint pump is fixedly connected to the inner cavity of the closing cover through a connecting pipe, the input end of the paint pump is fixedly connected to a paint pipe, and the top of the paint pipe is connected to the paint cavity.

[0009] As a further solution of the present invention: a friction roller is rotatably installed at the bottom of the cleaning chamber, a support frame is provided below the friction roller, a supporting roller is rotatably installed on the top of the support frame, and the top of the supporting roller is provided corresponding to the bottom of the friction roller.

[0010] As a further solution of the present invention: a cleaning assembly is provided on one side of the friction roller, and the cleaning assembly includes a component cover plate, a cleaning roller is provided on the side of the component cover plate close to the friction roller, the outer wall of the cleaning roller is fixedly connected to a cleaning pad, one side of the cleaning pad is in contact with the friction roller, the inner wall of the component cover plate is fixedly connected to a support frame, the top of the support frame is inclined toward the cleaning roller and fixedly connected to a scraper plate, and one side of the scraper plate is in contact with the cleaning pad.

[0011] As a further solution of the present invention: a limited pressing mechanism is provided on one side of the drying mechanism, the limited pressing mechanism includes two pressing components symmetrically arranged up and down, the pressing component includes a pressing frame, a driving motor is fixedly installed inside the pressing frame, the output end of the driving motor is fixedly connected to a pressing rod, both ends of the pressing rod are fixedly connected to pressing blocks, and the pressing blocks are in tight contact with the edge of the dialysis paper.

[0012] As a further solution of the present invention: an electrostatic guide roller is fixedly installed in the middle of the pressing rod.

[0013] As a further solution of the present invention: the outer wall of the electrostatic guide roller is provided with puncture microneedles.

[0014] A working method of a coating and shaping device for dialysis paper processing comprises the following steps: Step 1: Insert the dialysis paper into the trough; Step 2: Deliver different coatings to the top surface of the dialysis paper through two coating heads; Step 3: Deliver air to the bottom of the dialysis paper through the airflow lifting component to prevent the coating from penetrating downwards and prevent the coating from being too thick; Step 4: The electrostatic field generated by the electrostatic field generator drives the two different coatings to move at different distances, so that the two penetrate and combine with each other; Step 5: Dry and shape the coating through a drying mechanism.

[0015] Compared with the prior art, the present invention has the following advantages: during coating, two coating heads are provided to deliver two coatings with different electrical conductivities respectively, and the electrostatic field is utilized to cause the two coatings to shift by different distances in the electrostatic field, thereby obtaining fibrous coatings of different lengths. This allows the two coatings to penetrate and mix with each other, forming a network that is deposited at the intersection of fibers on the surface of the dialysis paper. This achieves the same effect of reducing chipping while saving the amount of coating used. The present invention atomizes the coating through a vibrating atomizer and sends it out through a ventilation groove to achieve the transportation of the coating. The air blowing nozzle is used to blow gas to provide power for the movement of the coating. The air blowing nozzle is connected to an external air pump and a pipeline. The coating head does not directly contact the dialysis paper during the coating process, avoiding the pressure generated by direct contact with the dialysis paper during the coating process, which leads to the problem of excessive penetration of the surface coating.

[0016] The present invention provides an airflow lifting assembly to blow air upward from the bottom of the dialysis paper, thereby increasing the air pressure in the fiber gaps at the bottom layer of the dialysis paper, thereby preventing the coating on the top surface of the dialysis paper from penetrating into the inner layer, and reducing the effect of the coating on the air permeability of the dialysis paper; The present invention discharges static electricity accumulated on the dialysis paper due to friction or electrostatic field during transportation through the electrostatic guide roller, avoiding the problem of static electricity accumulation on the dialysis paper making it easy for the dialysis paper to absorb environmental microorganisms or dust. The puncture microneedles arranged on the electrostatic guide roller penetrate the coating layer to further discharge the internal residual charge. At the same time, the presence of the puncture microneedles can also increase the friction between the dialysis paper and the electrostatic guide roller, thereby achieving stable positioning and expansion support for the dialysis paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 is a side sectional view of the present invention; Figure 3 is a side sectional view of the mounting bracket of the present invention; Figure 4 A cross-sectional view illustrating a coating assembly according to the present invention; Figure 5 is a cross-sectional schematic diagram of the cleaning component of the present invention; Figure 6 It is a three-dimensional schematic diagram of the airflow lifting assembly of the present invention; Figure 7 Schematic cross-sectional view of the airflow lifting assembly of the present invention; Figure 8 This is a schematic diagram of the component structure distribution of the present invention; Figure 9 Schematic cross-sectional view of the puncture microneedle of the present invention.

[0018] Description of reference numerals: 101, housing; 102, through slot; 103, mounting bracket; 104, partition; 2, coating mechanism; 201, coating chamber cover; 202, inner partition; 203, filling pipe; 204, coating unit; 2041, packaging box; 2042, coating head; 2043, fixing plate; 2044, closing cover; 2045, ventilation slot; 2046, air blowing nozzle; 2047, vibrating atomizer; 2048, coating pipe; 2049, coating pump; 301, cleaning chamber cover; 302, friction roller; 303, cleaning Component; 3031, component cover plate; 3032, cleaning roller; 3033, scraper; 3034, support frame; 4, air flow lifting component; 401, positioning frame; 402, extended air guide plate; 403, air supply trough; 404, air supply fan; 405, air inlet trough; 5, electrostatic field generator; 6, drying mechanism; 7, limiting and pressing mechanism; 701, pressing frame; 702, pressing rod; 703, electrostatic guide roller; 704, puncture microneedle; 705, pressing block; 8, supporting frame; 9, supporting roller; 10, dialysis paper. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0020] See also Figure 1The present invention provides a coating and shaping device for dialysis paper processing, comprising a housing 101. Both ends of the housing 101 are provided with through slots 102 for passing the dialysis paper 10. An external traction and conveying mechanism drives the dialysis paper 10 through the through slots 102 on both sides. The coating and shaping operations on the dialysis paper 10 are completed by the device structure within the housing 101 of the present application. See also Figure 1 and Figure 2 The top of the casing 101 is fixedly connected to a mounting bracket 103, and the inner wall of the mounting bracket 103 is fixedly connected to a partition plate 104. The partition plate 104 divides the inner cavity of the mounting bracket 103 into a coating cavity and a cleaning cavity. A coating mechanism 2 is provided in the coating cavity. The coating mechanism 2 includes two coating heads 2042 for spraying different coatings. An electrostatic field generator 5 is provided on one side of the coating mechanism 2. The dialysis paper 10 passes through the inside of the electrostatic field generator 5. A drying mechanism 6 for drying the top surface of the dialysis paper 10 after coating is provided on one side of the electrostatic field generator 5. The above-mentioned drying mechanism 6 and the electrostatic field generator 5 are both implemented by existing technical means; an airflow lifting component 4 for conveying airflow to the bottom of the dialysis paper 10 is provided below the coating mechanism 2. The present application employs two coating heads 2042, each delivering two different coatings. Due to the different electrical conductivities of the two coatings, they are subjected to different forces in the electrostatic field, resulting in different displacement distances and resulting in fibrous coatings of varying lengths. This allows the two coatings to penetrate and mix with each other, bonding loose fibers in a "bridging" fashion, forming a network that is deposited at the fiber intersections on the surface of the dialysis paper 10. This achieves the same effect of reducing debris while reducing the amount of coating used. In this embodiment, the two coatings are a 5% by mass aqueous solution of PVA and a nanosilver antibacterial coating with a particle size of 20 nm and a loading of 1% by mass. The nanosilver antibacterial coating serves as the highly conductive coating, while the PVA aqueous solution serves as the less conductive coating. Furthermore, to prevent the coating on the top surface of the dialysis paper 10 from penetrating into the inner layer and affecting the air permeability of the dialysis paper 10, the present application employs an airflow lift assembly 4, which blows air upward from the bottom of the dialysis paper 10, increasing the air pressure in the interstices between the fibers at the bottom layer of the dialysis paper 10, thereby preventing continued penetration of the coating.

[0021] In one embodiment, see Figure 6 and Figure 7The air flow lifting assembly 4 includes a positioning frame 401, and both sides of the positioning frame 401 are fixedly connected to the inner wall of the casing 101 to realize the installation of the air flow lifting assembly 4. The bottom of the positioning frame 401 is fixedly connected to an extended air guide plate 402, and one side of the bottom of the extended air guide plate 402 is tilted upward. The top of the extended air guide plate 402 is provided with a plurality of air supply slots 403, and the inner walls of the plurality of air supply slots 403 are all tilted to guide the air flow to the bottom surface of the dialysis paper 10. The extended air guide plate 402 is extended in the conveying direction of the dialysis paper 10, which is conducive to maintaining the air supply operation to the bottom surface of the dialysis paper 10 over a long distance; a supply fan 404 is fixedly installed inside the extended air guide plate 402, and an air inlet slot 405 is provided on the other side of the bottom of the extended air guide plate 402; in specific implementation, it can be considered to directly convey heated inert gas into the extended air guide plate 402, so as to utilize the temperature of the gas to achieve rapid shaping and drying of the inner layer of the coating.

[0022] In one embodiment, see Figure 3 The coating mechanism 2 includes an inner partition 202, which is configured as a partition with an inverted T-shaped cross-section. The inner partition 202 divides the coating chamber into a mounting chamber located below and two coating chambers located above for storing coatings. The top of the coating chamber is connected with a coating chamber cover 201 for sealing the coating chamber. At the same time, filling pipes 203 are fixedly connected to both sides of the top of the coating chamber cover 201. The two filling pipes 203 are used to replenish the coating in the two coating chambers respectively. A coating unit 204 is fixedly installed on the inner wall of the mounting chamber. Please refer to Figure 4 The coating unit 204 includes a packaging box 2041, and two coating components are arranged inside the packaging box 2041. The two coating heads 2042 are respectively connected to the output ends of the two coating components. The two coating components transport the coating to the two coating heads 2042 to meet the coating needs of the dialysis paper 10.

[0023] In one embodiment, see Figure 4The coating assembly includes a fixed plate 2043, and an air blowing nozzle 2046 is fixedly installed in the middle of the fixed plate 2043. The output port of the air blowing nozzle 2046 corresponds to the coating head 2042. The air is blown through the air blowing nozzle 2046 to provide power for the movement of the coating. The air blowing nozzle 2046 is connected to an external air pump and a pipeline. The coating head 2042 does not directly contact the dialysis paper 10 during the coating process. The traditional method of coating by rolling by a roller will inevitably cause the surface coating to easily penetrate excessively due to the effect of the roller pressure. A closed cover 2044 is fixedly connected between the top edge of the air blowing nozzle 2046 and the bottom of the fixed plate 2043. A number of air permeable grooves 2045 are provided on the top edge of the closed cover 2044. A vibrating atomizer 2047 and a liquid level meter are fixedly installed in the inner cavity of the closed cover 2044. The vibrating atomizer The device 2047 and the liquid level meter are both implemented using existing technical means. A paint pump 2049 is fixedly installed on the top of the fixed plate 2043. The output end of the paint pump 2049 is fixedly connected to the inner cavity of the closed cover 2044 through a connecting pipe. The input end of the paint pump 2049 is fixedly connected to a paint pipe 2048. The top of the paint pipe 2048 is connected to the paint cavity. The paint is atomized by the vibrating atomizer 2047 and sent out through the air vent 2045 to realize the transportation of the paint. The liquid level meter is used to detect the amount of paint remaining in the inner cavity of the closed cover 2044, and when the liquid level is too low, the paint in the paint cavity is connected through the paint pump 2049 for replenishment. In specific implementation, the liquid level of the paint inside the closed cover 2044 is kept constant through the cooperation of the liquid level meter and the paint pump 2049, so that the amount of paint output by the atomization remains relatively uniform and stable.

[0024] In one embodiment, see Figure 3 The top of the cleaning chamber is connected to a cleaning chamber cover 301, and the bottom of the cleaning chamber is rotatably mounted with a friction roller 302. The friction between the friction roller 302 and the top surface of the dialysis paper 10 cleans the dust on the top surface of the dialysis paper 10 and breaks the fibers on the top surface of the dialysis paper 10, producing tiny protrusions and burrs, thereby improving the bonding tightness between the coating and the dialysis paper 10. Figure 2 A supporting frame 8 is provided below the friction roller 302, and a supporting roller 9 is rotatably installed on the top of the supporting frame 8. The top of the supporting roller 9 is arranged corresponding to the bottom of the friction roller 302; through the cooperation between the supporting roller 9 and the friction roller 302, the dialysis paper 10 is supported in a limited position, thereby improving the stability of the dialysis paper 10 in the conveying movement inside the device.

[0025] In one embodiment, see Figure 3 and Figure 5Since the friction roller 302 is in friction contact with the dialysis paper 10 for a long time, a large amount of dust and fiber impurities are easily attached to the outer wall of the friction roller 302. In order to prevent the dust and impurities from contaminating the dialysis paper 10, a cleaning component 303 is provided on one side of the friction roller 302. The cleaning component 303 includes a component cover plate 3031. The component cover plate 3031 is provided with an arc groove on the side close to the friction roller 302. A cleaning groove is opened in the middle of the inner wall of the arc groove. A cleaning roller 3032 is rotatably installed on one side of the cleaning groove. A cleaning pad is fixedly connected to the outer wall of the cleaning roller 3032. One side of the cleaning pad is in contact with the friction roller 302. The inner wall of the component cover plate 3031 is fixedly connected to a support frame 3034. The top of the support frame 3034 is inclined toward the cleaning roller 3032 and is fixedly connected to a scraper plate 3033. One side of the scraper plate 3033 is in contact with the cleaning pad.

[0026] In one embodiment, see Figure 8 In order to improve the posture stability of the dialysis paper 10 during transportation and avoid deformation of the dialysis paper 10 due to stress generated by operations such as coating or drying and transportation, a limited pressing mechanism 7 is provided on one side of the drying mechanism 6. The limited pressing mechanism 7 includes two pressing components symmetrically arranged up and down. The pressing component includes a pressing frame 701. A driving motor is fixedly installed inside the pressing frame 701. The output end of the driving motor is fixedly connected to a pressing rod 702. Both ends of the pressing rod 702 are fixedly connected to a pressing block 705. The pressing block 705 is in close contact with the edge of the dialysis paper 10. The pressing block 705 is a flexible rubber block. Under the premise of ensuring stable contact with the dialysis paper 10, it reduces damage to the dialysis paper 10.

[0027] In one embodiment, an electrostatic guide roller 703 is fixedly mounted in the middle of the pressing rod 702. The electrostatic guide roller 703 discharges static electricity accumulated on the dialysis paper 10 due to friction or electrostatic field during transportation, thereby preventing static electricity from accumulating on the dialysis paper 10 and making it easy for the dialysis paper 10 to absorb environmental microorganisms or dust. In one embodiment, see Figure 8 and Figure 9 The outer wall of the electrostatic guide roller 703 is provided with a puncture microneedle 704. By setting the puncture microneedle 704 to pass through the coating layer, the internal residual charge is further discharged. At the same time, the presence of the puncture microneedle 704 can also increase the friction between the dialysis paper 10 and the electrostatic guide roller 703, thereby achieving stable positioning and expansion support for the dialysis paper 10.

[0028] When the present invention is used, the dialysis paper 10 is first fed into the through slot 102 near one side of the friction roller 302, pulled and moved by an external traction conveying mechanism, and then fed out of the through slot 102 on the other side; when the dialysis paper 10 moves below the friction roller 302, the friction roller 302 rotates to rub the top surface of the dialysis paper 10, thereby cleaning the dust on the dialysis paper 10 and polishing the top surface of the dialysis paper 10 to facilitate the adhesion of the coating; When the dialysis paper 10 passes under the two coating heads 2042, different coatings are respectively delivered to the top surface of the dialysis paper 10 through the two coating heads 2042. The specific operation is as follows: the coating is atomized by the vibrating atomizer 2047, and the atomized coating passes through the air permeable groove 2045 and moves to the bottom of the air blowing nozzle 2046. The air is supplied to the air blowing nozzle 2046 by an external air pump and pipeline, and the air blowing nozzle 2046 delivers air to blow the coating out, so that the coating falls on the dialysis paper 10. The blower fan 404 in the airflow lifting assembly 4 is started, and air is delivered to the bottom of the dialysis paper 10 through the air supply slot 403. The pressure of the airflow is used to prevent the coating from penetrating downward. After the dialysis paper 10 passes through the electrostatic field generator 5, the electrostatic field generated by the electrostatic field generator 5 drives the two different coatings to move different distances, so that the two penetrate and combine with each other to form a network and deposit at the intersection of the fibers on the surface of the dialysis paper 10, thereby blocking the paper scrap fibers. The coating on the top surface of the dialysis paper 10 is then dried and shaped by the drying mechanism 6.

[0029] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A coating and shaping device for dialysis paper processing, characterized in that: The invention comprises a housing (101), both ends of the housing (101) are provided with through slots (102) for allowing dialysis paper (10) to pass through, the top of the housing (101) is fixedly connected to a mounting frame (103), the inner wall of the mounting frame (103) is fixedly connected to a partition plate (104), the partition plate (104) divides the inner cavity of the mounting frame (103) into a coating cavity and a cleaning cavity, the coating cavity is provided with a coating mechanism (2), the coating mechanism (2) The invention comprises two coating heads (2042) for spraying different coatings, an electrostatic field generator (5) is provided on one side of the coating mechanism (2), the dialysis paper (10) passes through the inside of the electrostatic field generator (5), a drying mechanism (6) is provided on one side of the electrostatic field generator (5) for drying the top surface of the coated dialysis paper (10), and an airflow lifting component (4) is provided below the coating mechanism (2) for conveying airflow to the bottom of the dialysis paper (10).

2. A coating and shaping device for dialysis paper processing according to claim 1, characterized in that: The airflow lifting assembly (4) comprises a positioning frame (401), the bottom of the positioning frame (401) is fixedly connected to an extended air guide plate (402), one side of the bottom of the extended air guide plate (402) is tilted upward, a plurality of air supply slots (403) are provided on the top of the extended air guide plate (402), the inner walls of the plurality of air supply slots (403) are tilted, a supply fan (404) is fixedly installed inside the extended air guide plate (402), and an air inlet slot (405) is provided on the other side of the bottom of the extended air guide plate (402).

3. A coating and shaping device for dialysis paper processing according to claim 1, characterized in that: The coating mechanism (2) comprises an inner partition (202), wherein the inner partition (202) divides the coating chamber into an installation chamber and two coating chambers for storing coatings, wherein the installation chamber is located below the two coating chambers, and a coating unit (204) is fixedly mounted on the inner wall of the installation chamber, wherein the coating unit (204) comprises a packaging box (2041), wherein two coating assemblies are arranged inside the packaging box (2041), and two coating heads (2042) are respectively connected to the output ends of the two coating assemblies.

4. A coating and shaping device for dialysis paper processing according to claim 3, characterized in that: The coating assembly comprises a fixed plate (2043), an air blowing nozzle (2046) is fixedly installed in the middle of the fixed plate (2043), a closed cover (2044) is fixedly connected between the top edge of the air blowing nozzle (2046) and the bottom of the fixed plate (2043), a top edge of the closed cover (2044) is provided with a plurality of air permeable grooves (2045), a vibrating atomizer (2047) and a liquid level meter are fixedly installed in the inner cavity of the closed cover (2044), a paint pump (2049) is fixedly installed on the top of the fixed plate (2043), an output end of the paint pump (2049) is fixedly connected to the inner cavity of the closed cover (2044) via a connecting pipe, an input end of the paint pump (2049) is fixedly connected to a paint pipe (2048), and the top of the paint pipe (2048) is connected to the paint cavity.

5. A coating and shaping device for dialysis paper processing according to claim 1, characterized in that: A friction roller (302) is rotatably mounted at the bottom of the cleaning chamber, a support frame (8) is provided below the friction roller (302), a supporting roller (9) is rotatably mounted on the top of the support frame (8), and the top of the supporting roller (9) is arranged corresponding to the bottom of the friction roller (302).

6. A coating and shaping device for dialysis paper processing according to claim 5, characterized in that: A cleaning assembly (303) is provided on one side of the friction roller (302), and the cleaning assembly (303) comprises an assembly cover plate (3031). A cleaning roller (3032) is provided on the side of the assembly cover plate (3031) close to the friction roller (302). A cleaning pad is fixedly connected to the outer wall of the cleaning roller (3032), and one side of the cleaning pad is in close contact with the friction roller (302). A support frame (3034) is fixedly connected to the inner wall of the assembly cover plate (3031). The top of the support frame (3034) is tilted toward the cleaning roller (3032) and is fixedly connected to a scraping plate (3033), and one side of the scraping plate (3033) is in close contact with the cleaning pad.

7. A coating and shaping device for dialysis paper processing according to claim 1, characterized in that: A limited pressing mechanism (7) is provided on one side of the drying mechanism (6), and the limited pressing mechanism (7) includes two pressing assemblies symmetrically arranged in an upper and lower direction, and the pressing assembly includes a pressing frame (701), a driving motor is fixedly installed inside the pressing frame (701), and the output end of the driving motor is fixedly connected to a pressing rod (702), and both ends of the pressing rod (702) are fixedly connected to a pressing block (705), and the pressing block (705) is in close contact with the edge of the dialysis paper (10).

8. A coating and shaping device for dialysis paper processing according to claim 7, characterized in that: An electrostatic guide roller (703) is fixedly mounted on the middle portion of the pressing rod (702).

9. A coating and shaping device for dialysis paper processing according to claim 8, characterized in that: The outer wall of the electrostatic guide roller (703) is provided with a puncture microneedle (704).

10. A working method of a coating and shaping device for dialysis paper processing according to any one of claims 1 to 9, characterized in that: Step 1: feeding the dialysis paper (10) through the slot (102); Step 2: Delivering different coatings to the top surface of the dialysis paper (10) through two coating heads (2042); Step 3: Delivering air to the bottom of the dialysis paper (10) through the airflow lifting component (4) to prevent the coating from penetrating downwards and prevent the coating from being too thick; Step 4: Using the electrostatic field generated by the electrostatic field generator (5), the two different coatings are driven to move at different distances, so that the two penetrate and combine with each other; Step 5: The coating is dried and fixed by the drying mechanism (6).

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