Roller coater knife rest mechanism with negative pressure cleaning function

Abstract

The roller coater knife rest mechanism with the negative pressure cleaning function comprises a knife rest and a guide rail, the guide rail is arranged in the knife rest, a negative pressure cleaning stirring device is installed on the outer side of the guide rail, a negative pressure cleaning pipeline is arranged in the negative pressure cleaning stirring device, and a pneumatic conveyor is arranged on one side of the negative pressure cleaning pipeline. And one end of the pneumatic conveyor is provided with a water vapor port. According to the roller coater knife rest mechanism with the negative-pressure cleaning function, a high-pressure cleaning device is installed on the inner side of the knife rest body, finally, the negative-pressure cleaning stirring device moves left and right in the limited range of the axial direction of the coating roller along the guide rail under the action of a gear motor and a synchronous belt, leather coating operation can be conducted, the coating roller cannot be damaged during cleaning, and the service life of the coating roller is prolonged. And the surface is dry and not prone to rusting, the service life is prolonged, water and energy are saved, pollution is avoided, cost is saved, and potential damage to other parts of a machine does not exist.

Description

Technical Field

[0001] The present invention belongs to the technical field of roll coating equipment, and particularly relates to a roll coater tool rest mechanism with a negative pressure cleaning function. Background Art

[0002] The roll coater tool rest moves forward or backward driven by cylinders at both ends, approaching or moving away from the coating roll. A chemical material tank is formed between the scraping knife and the coating roll. The chemical material is conveyed into the chemical material tank through a diaphragm pump along a feeding pipeline and a feeding pipe on a stirring device. Finally, the stirring device moves left and right within a limited range along a rodless cylinder to stir the chemical material, and then the coating operation can be carried out. This tool rest only has the functions of conveying and stirring the chemical material.

[0003] The following problems exist when the roll coater tool rest mechanism on the market is applied:

[0004] 1. When the traditional roll coater tool rest mechanism is cleaned, usually when cleaning the coating roll, it is necessary to additionally introduce a tap water hose, and the operator holds the water pipe to clean the coating roll in the axial direction of the coating roll. The cleaning is laborious and time-consuming and not thorough, and subsequent tap water will splash onto other parts of the machine, bringing potential damage risks, such as bearing jamming due to water ingress affecting the transmission effect, risk of water ingress and leakage or protection failure of electronic components, surface rusting of the machine due to knocking, and sticking of the cylinder piston rod, etc. Therefore, it does not have a negative pressure cleaning function during cleaning.

[0005] 2. When most roll coater tool rest mechanisms are in use, when the staff manually cleans the tool rest mechanism, there is a risk of scratching the surface texture of the coating roll, resulting in high damage replacement costs and subsequent impact on production efficiency. Therefore, the cleaning efficiency is low during use.

[0006] 3. When most roll coater tool rest mechanisms are applied, usually the residual chemical material on the surface and in the grooves of the coating roll is likely to be not thoroughly cleaned, which will directly affect the leather coating effect, and situations such as secondary rework or even scrapping are required. Therefore, the maintenance cost is high during application. Summary of the Invention

[0007] The purpose of the present invention is to provide a roll coater tool rest mechanism with a negative pressure cleaning function to solve the technical problems raised in the background art.

[0008] To achieve the above object, the specific technical solution of the present invention is as follows: A roll coater knife rest mechanism with a negative pressure cleaning function, including a knife rest and a guide rail. A guide rail is provided inside the knife rest. A negative pressure cleaning and stirring device is installed outside the guide rail. A negative pressure cleaning pipeline is provided inside the negative pressure cleaning and stirring device. A pneumatic conveyor is provided on one side of the negative pressure cleaning pipeline. One end of the pneumatic conveyor is provided with a water vapor port. An air inlet is provided outside the pneumatic conveyor. A negative pressure water vapor suction port is provided on one side of the negative pressure cleaning pipeline. A bottom plate is provided below the negative pressure water vapor suction port. A chemical feeding pipeline and a water vapor cleaning pipeline are provided on the top of the bottom plate. A chemical feeding inlet is provided on one side of the chemical feeding pipeline. A chemical feeding outlet is provided on the other side of the chemical feeding pipeline. A water vapor inlet is provided on one side of the water vapor cleaning pipeline. A water vapor outlet is provided on the other side of the water vapor cleaning pipeline.

[0009] Preferably, a clamping plate is provided outside the guide rail. An installation plate is provided outside the clamping plate. An installation frame is provided outside the installation plate. A synchronous belt is provided inside the installation plate. A reduction motor is sleeved outside the synchronous belt. A fixing plate is provided outside the synchronous belt. The bottom plate is installed on the top of the fixing plate. A limiting frame is provided on the top of the bottom plate. A limiting rod is provided inside the limiting frame.

[0010] Preferably, a vertical plate is provided outside the limiting frame. A clamping seat is provided inside the vertical plate. The negative pressure cleaning pipeline is embedded inside the clamping seat. A top plate is provided on the top of the vertical plate. A handle is installed on the top of the top plate.

[0011] Preferably, installation holes are provided inside the installation plate and the installation frame. A circular hole is provided inside the fixing plate. A strip-shaped plate is provided on the top of the bottom plate. An installation groove is provided inside the strip-shaped plate.

[0012] Preferably, an installation angle plate is provided on one side of the vertical plate. A second connection strip is provided inside the installation angle plate. A first connection strip is provided at the bottom of the synchronous belt. One end of the first connection strip is provided with a knife rest.

[0013] Preferably, a housing is provided outside the knife rest. An adapter plate is provided at the bottom of the housing. A frame body is provided outside the adapter plate.

[0014] Preferably, a cylinder is provided outside the adapter plate. A piston rod is provided on the side of the cylinder. The number of the cylinders and the piston rods is two groups.

[0015] Preferably, a scraping knife is provided outside the guide rail. Housings are provided on both sides of the scraping knife.

[0016] The roll coater knife rest mechanism with a negative pressure cleaning function of the present invention has the following advantages:

[0017] 1. The knife rest mechanism of a roll coater with a negative pressure cleaning function is equipped with a high-pressure cleaner installed inside the knife rest body, a high-pressure air jet installed inside, and a negative pressure water and vapor suction device installed on the side, facilitating thorough cleaning of the coating roller. The knife rest moves forward or backward driven by cylinders at both ends, approaching or moving away from the coating roller. A material melting tank is formed between the scraping knife and the coating roller. The material is fed through a diaphragm pump from the material inlet of the material pipe on the negative pressure cleaning and stirring device, enters the material melting tank through the material outlet, and finally the negative pressure cleaning and stirring device moves left and right within the limited range in the axial direction of the coating roller under the action of a reduction motor and a synchronous belt, enabling leather coating operations. During cleaning, the coating roller will not be damaged, and its surface is dry and not prone to rust, improving its service life, saving water and energy, being pollution-free, reducing costs, and not causing potential damage to other components of the machine.

[0018] 2. The knife rest mechanism of a roll coater with a negative pressure cleaning function realizes automatic cleaning by installing a negative pressure cleaning and stirring device outside the guide rail and the synchronous belt, eliminating the need for manual operation by staff. After starting the equipment, intelligent cleaning is achieved, with high cleaning efficiency. Moreover, when a subsequent fault occurs, it is not necessary to completely dismantle the knife rest mechanism. It is only necessary to remove the negative pressure cleaning and stirring device from outside the synchronous belt. It uses modularization, making assembly and maintenance convenient during use.

[0019] 3. The knife rest mechanism of a roll coater with a negative pressure cleaning function is equipped with a material pipe installed on the top of the bottom plate, with a material inlet provided on one side of the material pipe and a material outlet provided at the other end, facilitating color change. First, thorough cleaning is carried out through water and vapor cleaning, and then the material is transmitted from the material inlet through the material pipe, meeting the requirements of color change operations, ensuring the coating effect, and then discharged from the material outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the connecting plate structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the water and vapor cleaning pipe structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the negative pressure water and vapor suction port structure of the present invention;

[0025] Figure 5 Schematic diagram of the card board structure of the present invention;

[0026] Figure 6 Schematic diagram of the air inlet structure of the present invention.

[0027] Description of the markings in the figure: 1. Tool rest; 2. Negative pressure cleaning and stirring device; 3. Guide rail; 4. Synchronous belt; 5. Reduction motor; 6. Scraping knife; 7. Cylinder; 8. Piston rod; 9. Negative pressure cleaning pipeline; 10. Pneumatic conveyor; 11. Water vapor port; 12. Air inlet; 13. Negative pressure water vapor suction port; 14. Chemical material pipeline; 15. Chemical material inlet; 16. Chemical material outlet; 17. Water vapor cleaning pipeline; 18. Water vapor inlet; 19. Water vapor outlet; 20. Card board; 21. Mounting plate; 22. Mounting frame; 23. Fixed plate; 24. Mounting hole; 25. Circular hole; 26. Bottom plate; 27. Vertical plate; 28. Top plate; 29. Handle; 30. Limiting frame; 31. Limiting rod; 32. Mounting groove; 33. First connecting strip; 34. Second connecting strip; 35. Mounting angle plate; 36. Clamping seat; 37. Shell; 38. Connecting plate; 39. Strip plate; 40. Frame body. Detailed implementation manners

[0028] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature and not restrictive.

[0029] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0031] In the embodiments of the present invention, unless otherwise clearly specified or limited, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0032] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0033] In order to better understand the purpose, structure and function of the present invention, the following further describes in detail a roll coater tool holder mechanism with a negative pressure cleaning function of the present invention in conjunction with the drawings.

[0034] As Figure 1-6As shown in the figure, a knife rest mechanism of a roll coater with a negative pressure cleaning function according to the present invention includes a knife rest 1 and a guide rail 3. The guide rail 3 is arranged inside the knife rest 1. Due to the installation of the guide rail 3, it is convenient for the negative pressure cleaning and stirring device 2 to move left and right within a limited range. The negative pressure cleaning and stirring device 2 is installed outside the guide rail 3. A negative pressure cleaning pipeline 9 is arranged inside the negative pressure cleaning and stirring device 2. One side of the negative pressure cleaning pipeline 9 is provided with a pneumatic conveyor 10. One end of the pneumatic conveyor 10 is provided with a water-vapor port 11. An air inlet 12 is arranged outside the pneumatic conveyor 10. One side of the negative pressure cleaning pipeline 9 is provided with a negative pressure water-vapor suction port 13. A bottom plate 26 is arranged below the negative pressure water-vapor suction port 13. A chemical material pipeline 14 and a water-vapor cleaning pipeline 17 are arranged on the top of the bottom plate 26. A chemical material inlet 15 is arranged on one side of the chemical material pipeline 14. A chemical material outlet 16 is arranged on the other side of the chemical material pipeline 14. A water-vapor inlet 18 is arranged on one side of the water-vapor cleaning pipeline 17. A water-vapor outlet 19 is arranged on the other side of the water-vapor cleaning pipeline 17. By installing high-pressure cleaning inside the knife rest 1 body, high-pressure air jet inside, and negative pressure water-vapor suction on the side, the knife rest 1 moves forward or backward driven by the cylinders 7 at both ends, realizing approaching or departing from the coating roller. A chemical material tank is formed between the scraping knife 6 and the coating roller. The chemical material enters through the chemical material inlet 15 of the chemical material pipeline 14 on the negative pressure cleaning and stirring device 2 by a diaphragm pump and enters the chemical material tank through the chemical material outlet 16. During cleaning, the coating roller will not be damaged, and the surface is dry and not easy to rust, improving the service life, saving water and energy, being pollution-free, saving costs, and not potentially damaging other parts of the machine.

[0035] A clamping plate 20 is arranged outside the guide rail 3. An installation plate 21 is arranged outside the clamping plate 20. An installation frame 22 is arranged outside the installation plate 21. A synchronous belt 4 is arranged inside the installation plate 21. A reduction motor 5 is sleeved outside the synchronous belt 4. A fixing plate 23 is arranged outside the synchronous belt 4. The bottom plate 26 is installed on the top of the fixing plate 23. A limiting frame 30 is arranged on the top of the bottom plate 26. A limiting rod 31 is arranged inside the limiting frame 30. Due to the installation of the synchronous belt 4 and the reduction motor 5, it is convenient for the negative pressure cleaning and stirring device 2 to move left and right within a limited range along the guide rail 3 in the axial direction of the coating roller under the action of the reduction motor 5 and the synchronous belt 4, and then leather coating operations can be carried out.

[0036] A vertical plate 27 is arranged outside the limiting frame 30. A clamping seat 36 is arranged inside the vertical plate 27. The negative pressure cleaning pipeline 9 is embedded inside the clamping seat 36. A top plate 28 is arranged on the top of the vertical plate 27. A handle 29 is installed on the top of the top plate 28. Due to the provision of the handle 29, after a subsequent failure of the negative pressure cleaning and stirring device 2, hold the handle 29 to open the top cover, which is convenient for maintenance.

[0037] Installation holes 24 are provided inside the mounting plate 21 and the mounting frame 22, a circular hole 25 is provided inside the fixing plate 23, a strip plate 39 is provided on the top of the bottom plate 26, and a mounting groove 32 is provided inside the strip plate 39. Since the installation holes 24 and the circular hole 25 are provided, it is convenient to fix the mounting plate 21, the mounting frame 22 and the fixing plate 23 by using fasteners.

[0038] A mounting angle plate 35 is provided on one side of the vertical plate 27, a second connecting strip 34 is provided inside the mounting angle plate 35, a first connecting strip 33 is provided at the bottom of the synchronous belt 4, and a tool holder 1 is provided at one end of the first connecting strip 33. By providing the mounting angle plate 35 and the second connecting strip 34, it is convenient to install and fix the negative pressure cleaning and stirring device 2 outside the synchronous belt 4.

[0039] A housing 37 is provided on the outside of the tool holder 1, a connecting plate 38 is provided at the bottom of the housing 37, and a frame body 40 is provided on the outside of the connecting plate 38. Since the connecting plate 38 is installed, it is convenient to install the cylinder 7 on the side of the housing 37 by using fasteners.

[0040] A cylinder 7 is provided on the outside of the connecting plate 38, a piston rod 8 is provided on the side of the cylinder 7, and two sets of cylinders 7 and piston rods 8 are provided. Since the cylinder 7 and the piston rod 8 are installed, it is convenient for the tool holder 1 to move forward or backward under the drive of the cylinders 7 at both ends, so as to approach or move away from the coating roller, and a chemical material tank is formed between the scraping knife 6 and the coating roller.

[0041] A scraping knife 6 is provided on the outside of the guide rail 3, and housing 37 are provided on both sides of the scraping knife 6. Since the scraping knife 6 is provided, it is convenient to scrape off the excess dye.

[0042] The working principle of the roller coating machine tool holder mechanism with negative pressure cleaning function: when applying the mechanism, the tool holder 1 needs to be moved first, and after it is moved to a suitable position, it can be placed on the top of the mechanism, and the tool holder 1 mechanism is installed using multiple sets of fasteners. However, in order to facilitate automatic cleaning, the tool holder 1 is equipped with a cleaning function inside the tool holder 1. First, the card plate 20 is initially installed on the outside of the guide rail 3 using fasteners, and then the mounting plate 21 on the outside of the fixing plate 23 is fixed to the mounting frame 22 using fasteners, and then the bottom plate 26 is fixed on the top of the mounting frame 22, and then the negative pressure cleaning structure is installed on the top of the bottom plate 26, and a limit frame 30 is installed to facilitate the limit rod 31 to move the pneumatic conveyor 10 and the water vapor The cleaning pipe 17 is fixed in position, and then fasteners are used to install it on the side of the second connecting strip 34, so that the negative pressure cleaning structure can be installed inside the tool holder 1. When the staff cleans the roller coating inside the tool holder 1, first inject chemical control into the chemical tank, ventilate through the diaphragm pump, and then the chemical flows from the chemical inlet 15 to the diaphragm pump, and then cleans it through the negative pressure cleaning and stirring device 2. After cleaning, the chemical outlet 16 flows to the chemical tank. At this time, the negative pressure cleaning and stirring device 2 moves left and right along the track on the tool holder 1 under the joint action of the reduction motor 5 and the synchronous belt 4 to stir the chemical, ensuring that the chemical in the chemical tank does not accumulate and solidify, meeting the requirements of the coating operation. The principle of negative pressure cleaning and coating roller control is that the first step is tap water After being pressurized by the pneumatic three-way valve and the booster pump, the compressed air from the air source enters the three-way piece, and enters the pneumatic three-way valve through the first air inlet 12 and the second air outlet on the side of the first solenoid valve and the air inlet 12. Then the pneumatic three-way valve is actuated to be connected from the first conversion port and the third conversion port. Then the action of the electromagnetic ball valve is changed, and the tap water flows to the electromagnetic ball valve, and drives the pneumatic three-way valve inside the ball valve to move. At this time, the first conversion port and the third conversion port are already connected. During the power-on process, the booster pump feeds water into the water inlet or air inlet 12 of the negative pressure cleaning and stirring device 2, and then starts the high-pressure mist water spray to form a high-pressure water mist to rinse the surface of the coating roller and the residual chemical materials in the surface grooves. At the same time, the negative pressure cleaning and stirring device 2 is driven along the reduction motor 5 and the synchronous belt 4. The guide rail 3 moves left and right within the limited range of the axial direction of the coating roller, and performs a cleaning operation on the coating roller within an effective range. When the cleaning operation is completed, the compressed air passes through the pneumatic three-way valve to the water vapor inlet 18 and the water vapor outlet 19 of the water vapor cleaning pipe 17 on the negative pressure cleaning and stirring device 2, forming a high-pressure gas, which blows the water on the surface of the coating roller to atomize the water. At the same time, the negative pressure cleaning and stirring device 2 moves left and right within the limited range of the axial direction of the coating roller along the guide rail 3 under the action of the reduction motor 5 and the synchronous belt 4, and performs atomization operation on the water on the surface of the coating roller. Finally, when the water atomization operation does not stop, the air inlet 12 on the negative pressure cleaning pipe 9 on the negative pressure cleaning and stirring device 2 enters the compressed air, and forms a high-pressure suction at the negative pressure water vapor outlet 11 of the pneumatic conveyor 10.At this time, the water mist on the surface of the coating roller will be discharged through the negative-pressure water-vapor suction port 13 of the negative-pressure cleaning pipeline 9 via the negative-pressure water-vapor outlet 19. At the same time, the negative-pressure cleaning and stirring device 2 moves left and right within the defined range in the axial direction of the coating roller along the guide rail 3 under the action of the reduction motor 5 and the synchronous belt 4, so as to suck away the water mist on the surface of the coating roller, ensure that the water vapor on the surface of the coating roller is clean, can meet the color-changing operation, does not affect the coating effect, or does not rust after being placed for a long time, ensure that the surface of the coating roller is water-free and basically dry. Most importantly, ensure that there is no residual chemical material in the grooves on the surface of the coating roller, which will affect the coating effect. The above operation steps can be repeated until the surface of the coating roller is thoroughly cleaned, ensuring the coating effect and extending the service life of the coating roller.

[0043] It can be understood that the present invention is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent substitutions can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A knife rest mechanism of a roll coater with a negative pressure cleaning function, comprising a knife rest (1) and a guide rail (3). The guide rail (3) is arranged inside the knife rest (1), and it is characterized in that: A negative-pressure cleaning and stirring device (2) is installed on the outer side of the guide rail (3). A negative-pressure cleaning pipeline (9) is arranged inside the negative-pressure cleaning and stirring device (2). An air conveyor (10) is arranged on one side of the negative-pressure cleaning pipeline (9). A water-vapor port (11) is arranged at one end of the air conveyor (10). An air inlet (12) is arranged on the outer side of the air conveyor (10). A negative-pressure water-vapor suction port (13) is arranged on one side of the negative-pressure cleaning pipeline (9). A bottom plate (26) is arranged below the negative-pressure water-vapor suction port (13). A chemical feeding pipeline (14) and a water-vapor cleaning pipeline (17) are arranged on the top of the bottom plate (26). A chemical feeding inlet (15) is arranged on one side of the chemical feeding pipeline (14). A chemical feeding outlet (16) is arranged on the other side of the chemical feeding pipeline (14). A water-vapor inlet (18) is arranged on one side of the water-vapor cleaning pipeline (17). A water-vapor outlet (19) is arranged on the other side of the water-vapor cleaning pipeline (17).

2. The knife rest mechanism of the roll coater with a negative pressure cleaning function according to claim 1, wherein: A clamping plate (20) is arranged outside the guide rail (3). An installation plate (21) is arranged on the outer side of the clamping plate (20). An installation frame (22) is arranged on the outer side of the installation plate (21). A synchronous belt (4) is arranged inside the installation plate (21). A reduction motor (5) is sleeved outside the synchronous belt (4). A fixing plate (23) is arranged outside the synchronous belt (4). The bottom plate (26) is installed on the top of the fixing plate (23). A limiting frame (30) is arranged on the top of the bottom plate (26). A limiting rod (31) is arranged inside the limiting frame (30).

3. The knife rest mechanism of the roll coater with a negative pressure cleaning function according to claim 2, wherein: A vertical plate (27) is arranged on the outer side of the limiting frame (30). A clamping seat (36) is arranged inside the vertical plate (27). The negative-pressure cleaning pipeline (9) is embedded inside the clamping seat (36). A top plate (28) is arranged on the top of the vertical plate (27). A handle (29) is installed on the top of the top plate (28).

4. The knife rest mechanism of the roll coater with a negative pressure cleaning function according to claim 2, characterized in that: Installation holes (24) are formed inside the installation plate (21) and the installation frame (22). A circular hole (25) is formed inside the fixing plate (23). A strip-shaped plate (39) is arranged on the top of the bottom plate (26). An installation groove (32) is formed inside the strip-shaped plate (39).

5. The knife rest mechanism of the roll coater with a negative pressure cleaning function according to claim 3, wherein: An installation angle plate (35) is arranged on one side of the vertical plate (27). A second connecting strip (34) is arranged inside the installation angle plate (35). A first connecting strip (33) is arranged at the bottom of the synchronous belt (4). A tool rest (1) is arranged at one end of the first connecting strip (33).

6. The knife rest mechanism of the roll coater with a negative pressure cleaning function according to claim 1, characterized in that: A housing (37) is arranged on the outer side of the tool rest (1). A connecting plate (38) is arranged at the bottom of the housing (37). A frame body (40) is arranged on the outer side of the connecting plate (38).

7. The knife rest mechanism of the roll coater with a negative pressure cleaning function according to claim 6, characterized in that: A cylinder (7) is arranged on the outer side of the connecting plate (38). A piston rod (8) is arranged on the side of the cylinder (7). Two sets of the cylinder (7) and the piston rod (8) are provided.

8. The knife rest mechanism of the roll coater with a negative pressure cleaning function according to claim 1, characterized in that: A scraping knife (6) is arranged on the outer side of the guide rail (3). Housings (37) are arranged on both sides of the scraping knife (6).

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