Paper coating device and coating method thereof

Abstract

The invention belongs to the technical field of paper manufacturing, and particularly relates to a paper coating device and a coating method thereof.The coating device comprises a machine base, and a liquid containing tank, a transfer roller, a first rubber roller, a second rubber roller and a first height adjusting assembly are arranged on the machine base. The liquid containing tank is used for containing coating liquid; the transfer roller is rotationally arranged above the liquid containing tank, and the lower part of the transfer roller is immersed in the coating liquid in the liquid containing tank; the first rubber roller is arranged above the transfer roller and is attached to the peripheral surface of the transfer roller; the second rubber roller is arranged above the first rubber roller, and a paper passing gap is formed between the second rubber roller and the first rubber roller and allows paper to pass through; the first height adjusting assembly is used for adjusting the vertical distance between the liquid containing tank and the transfer roller. The vertical distance between the liquid containing groove and the transfer roller is adjusted through the first height adjusting assembly, the height of the part, immersed in liquid in the liquid containing groove, of the transfer roller can basically meet the requirement, the part is neither too much nor too little, and waste is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of paper manufacturing, and in particular relates to a paper coating device and a coating method thereof. Background Art

[0002] Coating is a method of coating a paste polymer, a molten polymer or a polymer melt on a substrate such as paper, cloth, or a plastic film to produce a composite material (film). When this method is applied to paper, coated paper is formed.

[0003] The main purpose of paper coating is to improve the surface properties of paper, so that it has better optical properties, printing performance and other special properties. For example, coated paper can be used for printing magazines, books and other publishing papers, as well as printing papers such as trademarks, packaging, and product catalogs. Through coating, paper can obtain higher whiteness, glossiness and smoothness, thereby improving the quality and visual effect of printed products.

[0004] A coating device is required in the paper coating process, and usually an automatic coating equipment such as that disclosed in publication number CN118454977A is used. The positional relationship between the coating roller and the liquid containing plate is fixed, and the depth of the coating roller immersed in the liquid in the liquid containing plate cannot be adjusted. If the coating roller is immersed too much in the liquid in the liquid containing plate, too much liquid will be absorbed into the coating roller from the two ends of the coating roller, thereby causing waste. If the coating roller is at a large distance from the bottom surface of the liquid containing plate, although it can be immersed in less liquid in the liquid containing plate, when there is a small amount of liquid left in the liquid containing plate that needs to be used up as much as possible, the coating roller cannot dip into the liquid in the liquid containing plate and can only pour out the liquid in the liquid containing plate, which also causes waste. Summary of the invention

[0005] The purpose of the present invention is to provide a paper coating device and a coating method thereof in order to solve the above-mentioned technical problems, thereby achieving the effect of reducing waste.

[0006] In view of this, the present invention provides a paper coating device, including a machine base, on which is disposed:

[0007] A liquid storage tank, the liquid storage tank is used to hold the coating liquid;

[0008] A transfer roller, the transfer roller is rotatably arranged above the liquid storage tank, and the lower part of the transfer roller is immersed in the coating liquid in the liquid storage tank;

[0009] A first rubber roller, which is arranged above the transfer roller and in contact with the outer peripheral surface of the transfer roller;

[0010] A second rubber roller, wherein the second rubber roller is arranged above the first rubber roller, and a paper passing gap is arranged between the second rubber roller and the first rubber roller to allow paper to pass through;

[0011] A first height adjustment component is used to adjust the vertical distance between the liquid storage tank and the transfer roller.

[0012] In the present technical scheme, the vertical distance between the liquid storage tank and the transfer roller is adjusted by the first height adjustment component. When there is more liquid in the liquid storage tank, the first height adjustment component makes the liquid storage tank farther away from the transfer roller, so that the coating roller will not be immersed in the liquid in the liquid storage plate too much. When there is a small amount of liquid left in the liquid storage plate that needs to be used up as much as possible, the first height adjustment component makes the liquid storage tank closer to the transfer roller, so that the coating roller can dip into the liquid in the liquid storage plate during rotation, so that the height of the transfer roller immersed in the liquid in the liquid storage tank can basically meet the requirements, neither too much nor too little, thereby reducing waste.

[0013] Further, the first height adjustment component includes:

[0014] An adjusting hand wheel is rotatably arranged on the side of the machine base, and a worm is connected to the end of the adjusting hand wheel.

[0015] A first adjustment seat, which is fixedly connected to the machine base and disposed below the liquid storage tank, wherein an adjustment shaft is rotatably disposed on the first adjustment seat, a turbine and an adjustment gear are fixedly sleeved on the adjustment shaft, and the turbine is meshed with the worm;

[0016] The adjusting rack is slidably arranged on the first adjusting seat and fixedly connected to the bottom of the liquid storage tank. The liquid storage tank is slidably arranged on the machine seat, and the adjusting rack is meshed with the adjusting gear.

[0017] In this technical solution, when it is necessary to adjust the distance from the liquid tank to the transfer roller, the adjusting hand wheel is turned to make the worm drive the turbine to rotate, so that the adjusting shaft synchronously rotates with the adjusting gear, so that the adjusting rack moves the liquid tank up and down on the machine base to approach or move away from the liquid tank.

[0018] Furthermore, a second height adjustment component is provided on the machine base, and the second height adjustment component is used to adjust the width of the paper feeding gap.

[0019] In this technical solution, the width of the paper feeding gap is adjusted to meet the coating requirements of papers of different thicknesses.

[0020] Furthermore, the second height adjustment component includes an adjusting cylinder, which is fixedly arranged on the machine base. The two ends of the second rubber roller are respectively rotatably arranged in two sliders, and the sliders are slidably arranged in the machine base. There are two adjusting cylinders in total, and the piston rods of the two adjusting cylinders are respectively connected to the two sliders for driving the second rubber roller to approach or move away from the first rubber roller.

[0021] Furthermore, the liquid storage tank is provided with a stirring component located between the bottom of the liquid storage tank and the transfer roller, and the stirring component is used to stir the liquid in the liquid storage tank.

[0022] Furthermore, an interlayer including a heating resistance wire is provided on the liquid storage tank.

[0023] In the technical solution, the liquid in the liquid storage tank is heated and kept warm by a heating resistor to prevent the liquid from condensing.

[0024] Furthermore, the stirring assembly comprises:

[0025] A stirring rod, the stirring rod is arranged along the length direction of the liquid tank, and a plurality of arc-shaped rods are arranged on the stirring rod along the length direction;

[0026] A power assembly is used to drive the stirring rod to move back and forth along the length direction of the liquid tank.

[0027] In the present technical solution, when the transfer roller rotates and dips the liquid in the liquid tank, it stirs the liquid in the liquid tank in the rotation direction to form a stirring effect. By arranging a stirring rod that can move back and forth along the length of the liquid tank between the bottom of the liquid tank and the transfer roller, the liquid can be stirred in the other direction to prevent the liquid from condensing.

[0028] Furthermore, the power assembly includes:

[0029] A fixed seat, wherein the fixed seat is fixedly arranged on the side wall of the end of the liquid storage tank, a guide protrusion is arranged in the fixed seat, a first guide hole is opened on the guide protrusion along the axis direction of the fixed seat, a sliding rod is slidably arranged in the first guide hole, a second guide hole is opened on the guide protrusion perpendicular to the axis direction of the fixed seat, a clearance notch is also opened on the peripheral wall of the fixed seat, an inclined guide groove is opened on the sliding rod, an extension rod is vertically connected to the lower end of the sliding rod, and the extension rod passes through the clearance notch and is fixedly connected to the stirring rod;

[0030] A sliding cover, wherein the sliding cover is slidably arranged on the inner wall of the fixed seat, and the peripheral walls on both sides of the sliding cover protrude inwardly with two opposite first inclined surfaces, and a return spring is connected between the inner wall of the sliding cover and the top end of the sliding rod;

[0031] A special-shaped block, wherein the special-shaped block is slidably arranged in the second guide hole, and second inclined surfaces matching the first inclined surfaces are arranged at both ends of the special-shaped block, and the middle part of the special-shaped block is sleeved in the guide groove and matches the shape of the guide groove;

[0032] A trigger convex block is arranged at the end of the transfer roller, and the trigger convex block can press the sliding cover during the circumferential rotation of the transfer roller.

[0033] In the present technical solution, the transfer roller rotates circumferentially, and when the triggering protrusion rotates to the sliding cover, the sliding cover will be squeezed to make the sliding cover slide toward the fixed seat, so that the first inclined surface squeezes the second inclined surface of the special-shaped block, thereby causing the special-shaped block to move laterally, so that under the action of the inclined guide groove, the sliding rod moves upward to drive the stirring rod to move, and then after the triggering protrusion rotates away, the sliding cover is reset, the stirring rod is reset, and so on, and the reciprocating movement is carried out, and the rotation of the transfer roller provides a power source for stirring, saving energy.

[0034] Furthermore, a scraper is also provided on the machine base.

[0035] Furthermore, the coating method of the coating device comprises the following steps:

[0036] S1: Adjustment, adjusting the distance of the paper gap and laying out the paper;

[0037] S2: coating, the transfer roller rotates to dip the liquid in the liquid tank into the transfer roller, the transfer roller transfers the liquid to the first rubber roller, the first rubber roller coats the liquid on the paper in the paper gap, the transfer roller rotates to drive the stirring component to stir by reciprocating along the length direction of the liquid tank.

[0038] The beneficial effects of the present invention are:

[0039] 1. The vertical distance between the liquid storage tank and the transfer roller is adjusted by the first height adjustment component. When there is more liquid in the liquid storage tank, the first height adjustment component makes the liquid storage tank farther away from the transfer roller, so that the coating roller will not be immersed in the liquid in the liquid storage plate too much. When there is a small amount of liquid left in the liquid storage plate that needs to be used up as much as possible, the first height adjustment component makes the liquid storage tank closer to the transfer roller, so that the coating roller can dip into the liquid in the liquid storage plate during rotation, so that the height of the transfer roller immersed in the liquid in the liquid storage tank can basically meet the requirements, neither too much nor too little, thereby reducing waste.

[0040] 2. Adjust the width of the paper gap to meet the coating needs of papers of different thicknesses.

[0041] 3. When the transfer roller rotates and dips the liquid in the liquid tank, it will stir the liquid in the liquid tank in the direction of rotation to form a stirring effect. By arranging a stirring rod that can move back and forth along the length of the liquid tank between the bottom of the liquid tank and the transfer roller, the liquid can be stirred in another direction to prevent the liquid from condensing. The rotation of the transfer roller provides a power source for stirring, saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a stereogram of the present invention;

[0043] Figure 2 is a cross-sectional view of the present invention;

[0044] Figure 3 is a schematic diagram of a stirring assembly and a transfer roller;

[0045] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0046] Figure 5 is a stereogram of a stirring assembly;

[0047] Figure 6 It is a cross-sectional view of the power assembly;

[0048] Figure 7 is a cross-sectional view of the stirring rod;

[0049] Figure 8 It is a cross-sectional view of the fixing seat.

[0050] The symbols in the figure are:

[0051] 1. Machine base; 2. Liquid storage tank; 3. Transfer roller; 4. First rubber roller; 5. Second rubber roller; 6. Scraper; 7. Adjustment hand wheel; 8. Worm; 9. First adjustment seat; 10. Adjustment shaft; 11. Turbine; 12. Adjustment gear; 13. Adjustment rack; 14. Adjustment cylinder; 15. Slider; 16. Interlayer; 17. Stirring rod; 18. Arc rod; 19. Fixed seat; 20. Guide protrusion; 21. First guide hole; 22. Sliding rod; 23. Second guide hole; 24. Make way gap; 25. Guide groove; 26. Extension rod; 27. Sliding cover; 28. First inclined surface; 29. ​​Return spring; 30. Special-shaped block; 31. Second inclined surface; 32. Trigger protrusion. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0053] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0055] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0056] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0057] Embodiment 1

[0058] like Figure 1-2 As shown, a paper coating device includes a machine base 1, on which is disposed:

[0059] A liquid storage tank 2, wherein the liquid storage tank 2 is used to store the coating liquid;

[0060] A transfer roller 3, wherein the transfer roller 3 is rotatably arranged above the liquid storage tank 2, and the lower part of the transfer roller 3 is immersed in the coating liquid in the liquid storage tank 2;

[0061] A first rubber roller 4, which is arranged above the transfer roller 3 and in contact with the outer peripheral surface of the transfer roller 3;

[0062] A second rubber roller 5, wherein the second rubber roller 5 is arranged above the first rubber roller 4, and a paper passing gap is arranged between the second rubber roller 5 and the first rubber roller 4 to allow paper to pass through;

[0063] The first height adjustment component is used to adjust the vertical distance between the liquid storage tank 2 and the transfer roller 3. A scraper 6 is also provided on the base 1.

[0064] The vertical distance between the liquid storage tank 2 and the transfer roller 3 is adjusted by the first height adjustment component. When there is more liquid in the liquid storage tank 2, the first height adjustment component makes the liquid storage tank 2 farther away from the transfer roller 3, so that the coating roller will not be immersed in the liquid in the liquid storage plate too much. When there is a small amount of liquid left in the liquid storage plate that needs to be used up as much as possible, the first height adjustment component makes the liquid storage tank 2 closer to the transfer roller 3, so that the coating roller can dip into the liquid in the liquid storage plate during rotation, so that the height of the transfer roller 3 immersed in the liquid in the liquid storage tank 2 can basically meet the requirements, neither too much nor too little, thereby reducing waste.

[0065] The first height adjustment assembly includes:

[0066] The adjusting hand wheel 7 is rotatably arranged on the side of the machine base 1, and a worm 8 is connected to the end of the adjusting hand wheel 7.

[0067] A first adjustment seat 9, which is fixedly connected to the base 1 and disposed below the liquid storage tank 2, and an adjustment shaft 10 is rotatably disposed on the first adjustment seat 9, and a turbine 11 and an adjustment gear 12 are fixedly sleeved on the adjustment shaft 10, and the turbine 11 is meshed with the worm 8;

[0068] The adjusting rack 13 is slidably disposed on the first adjusting seat 9 and fixedly connected to the bottom of the liquid storage tank 2 . The liquid storage tank 2 is slidably disposed on the machine base 1 . The adjusting rack 13 is meshed with the adjusting gear 12 .

[0069] When the distance from the liquid tank 2 to the transfer roller 3 needs to be adjusted, the adjusting hand wheel 7 is turned to make the worm 8 drive the turbine 11 to rotate, so that the adjusting shaft 10 synchronously rotates with the adjusting gear 12, so that the adjusting rack 13 moves the liquid tank 2 up and down on the machine base 1 to approach or move away from the liquid tank 2.

[0070] Embodiment 2

[0071] like Figure 1-2 As shown, the machine base 1 is provided with a second height adjustment component, and the second height adjustment component is used to adjust the width of the paper feeding gap. The width of the paper feeding gap is adjusted to meet the coating requirements of papers of different thicknesses.

[0072] The second height adjustment component includes an adjusting cylinder 14, which is fixedly arranged on the machine base 1. The two ends of the second rubber roller 5 are respectively rotatably arranged in two sliders 15, and the sliders 15 are slidably arranged in the machine base 1. There are two adjusting cylinders 14 in total, and the piston rods of the two adjusting cylinders 14 are respectively connected to the two sliders 15 to drive the second rubber roller 5 to approach or move away from the first rubber roller 4.

[0073] Embodiment 3

[0074] like Figure 3-8 As shown, the liquid tank 2 is provided with a stirring assembly located between the bottom of the liquid tank 2 and the transfer roller 3, and the stirring assembly is used to stir the liquid in the liquid tank 2. The liquid tank 2 is provided with an interlayer 16 including a heating resistor wire. The heating resistor wire is used to heat and keep the liquid in the liquid tank 2 warm to prevent the liquid from condensing.

[0075] The stirring assembly comprises:

[0076] A stirring rod 17, wherein the stirring rod 17 is arranged along the length direction of the liquid tank 2, and a plurality of arc-shaped rods 18 are arranged on the stirring rod 17 along the length direction;

[0077] A power assembly is used to drive the stirring rod 17 to move back and forth along the length direction of the liquid tank 2.

[0078] When the transfer roller 3 rotates and dips the liquid in the liquid tank 2, it will stir the liquid in the liquid tank 2 in the direction of rotation to form a stirring effect. By arranging a stirring rod 17 between the bottom of the liquid tank 2 and the transfer roller 3 and capable of reciprocating along the length direction of the liquid tank 2, the liquid can be stirred in another direction to prevent the liquid from condensing.

[0079] The power assembly comprises:

[0080] A fixed seat 19, wherein the fixed seat 19 is fixedly arranged on the side wall of the end of the liquid storage tank 2, a guide protrusion 20 is arranged in the fixed seat 19, a first guide hole 21 is opened on the guide protrusion 20 along the axial direction of the fixed seat 19, a sliding rod 22 is slidably arranged in the first guide hole 21, a second guide hole 23 is opened on the guide protrusion 20 perpendicular to the axial direction of the fixed seat 19, a clearance notch 24 is also opened on the peripheral wall of the fixed seat 19, an inclined guide groove 25 is opened on the sliding rod 22, an extension rod 26 is vertically connected to the lower end of the sliding rod 22, and the extension rod 26 passes through the clearance notch 24 and is fixedly connected to the stirring rod 17;

[0081] A sliding cover 27, wherein the sliding cover 27 is slidably disposed on the inner wall of the fixed seat 19, and two opposite first inclined surfaces 28 are protruded inwardly from the peripheral walls on both sides of the sliding cover 27, and a return spring 29 is connected between the inner wall of the sliding cover 27 and the top end of the sliding rod 22;

[0082] The special-shaped block 30 is slidably disposed in the second guide hole 23, and the second inclined surfaces 31 matching the first inclined surfaces 28 are disposed at both ends of the special-shaped block 30. The middle portion of the special-shaped block 30 is sleeved in the guide groove 25 and matches the shape of the guide groove 25;

[0083] The triggering protrusion 32 is arranged at the end of the transfer roller 3 , and the triggering protrusion 32 can press the sliding cover 27 during the circumferential rotation of the transfer roller 3 .

[0084] The transfer roller 3 rotates circumferentially, and when the triggering protrusion 32 rotates to the sliding cover 27, the sliding cover 27 will be squeezed to make the sliding cover 27 slide toward the fixed seat 19, so that the first inclined surface 28 squeezes the second inclined surface 31 of the special-shaped block 30, so that the special-shaped block 30 moves laterally, and under the action of the inclined guide groove 25, the sliding rod 22 moves upward to drive the stirring rod 17 to move, and then after the triggering protrusion 32 rotates away, the sliding cover 27 is reset, and the stirring rod 17 is reset, and the reciprocating movement is repeated, and the rotation of the transfer roller 3 provides a power source for stirring, saving energy.

[0085] The coating method of the coating device comprises the following steps:

[0086] S1: Adjustment, adjust the distance of the paper gap and lay out the paper;

[0087] S2: coating, the transfer roller 3 rotates to dip the liquid in the liquid tank 2 into the transfer roller 3, the transfer roller 3 transfers the liquid to the first rubber roller 4, the first rubber roller 4 coats the liquid on the paper in the paper gap, the transfer roller 3 rotates to drive the stirring component to stir by reciprocating along the length direction of the liquid tank 2.

[0088] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A paper coating device, characterized in that: The invention comprises a machine base (1), on which is arranged: A liquid storage tank (2), wherein the liquid storage tank (2) is used to store the coating liquid; A transfer roller (3), the transfer roller (3) being rotatably arranged above the liquid storage tank (2), and the lower part of the transfer roller (3) being immersed in the coating liquid in the liquid storage tank (2); A first rubber roller (4), the first rubber roller (4) being arranged above the transfer roller (3) and in contact with the outer peripheral surface of the transfer roller (3); A second rubber roller (5), wherein the second rubber roller (5) is arranged above the first rubber roller (4), and a paper passing gap is arranged between the second rubber roller (5) and the first rubber roller (4) to allow paper to pass through; A first height adjustment component, wherein the first height adjustment component is used to adjust the vertical distance between the liquid storage tank (2) and the transfer roller (3).

2. A paper coating device according to claim 1, characterized in that: The first height adjustment assembly includes: An adjusting hand wheel (7), the adjusting hand wheel (7) is rotatably arranged on the side of the machine base (1), and a worm (8) is connected to the end of the adjusting hand wheel (7). A first adjustment seat (9), the first adjustment seat (9) is fixedly connected to the machine base (1) and is arranged below the liquid storage tank (2), an adjustment shaft (10) is rotatably arranged on the first adjustment seat (9), a turbine (11) and an adjustment gear (12) are sleeved and fixedly connected to the adjustment shaft (10), and the turbine (11) is meshed with the worm (8); An adjusting rack (13) is slidably arranged on the first adjusting seat (9) and fixedly connected to the bottom of the liquid storage tank (2); the liquid storage tank (2) is slidably arranged on the machine seat (1); and the adjusting rack (13) is meshed with the adjusting gear (12).

3. A paper coating device according to claim 1, characterized in that: The machine base (1) is provided with a second height adjustment component, and the second height adjustment component is used to adjust the width of the paper feeding gap.

4. A paper coating device according to claim 3, characterized in that: The second height adjustment component comprises an adjustment cylinder (14), the adjustment cylinder (14) being fixedly arranged on the machine base (1), the two ends of the second rubber roller (5) being rotatably arranged in two sliders (15), the sliders (15) being slidably arranged in the machine base (1), there being two adjustment cylinders (14) in total, the piston rods of the two adjustment cylinders (14) being respectively connected to the two sliders (15) for driving the second rubber roller (5) to approach or move away from the first rubber roller (4).

5. A paper coating device according to claim 1, characterized in that: The liquid storage tank (2) is provided with a stirring component located between the bottom of the liquid storage tank (2) and the transfer roller (3), and the stirring component is used to stir the liquid in the liquid storage tank (2).

6. A paper coating device according to claim 1, characterized in that: The liquid storage tank (2) is provided with an interlayer (16) including a heating resistance wire.

7. A paper coating device according to claim 5, characterized in that: The stirring assembly comprises: A stirring rod (17), wherein the stirring rod (17) is arranged along the length direction of the liquid storage tank (2), and a plurality of arc-shaped rods (18) are arranged on the stirring rod (17) along the length direction; A power assembly is used to drive a stirring rod (17) to move back and forth along the length direction of the liquid tank (2).

8. A paper coating device according to claim 7, characterized in that: The power assembly comprises: A fixed seat (19), wherein the fixed seat (19) is fixedly arranged on the side wall of the end of the liquid storage tank (2), a guide protrusion (20) is arranged in the fixed seat (19), a first guide hole (21) is provided on the guide protrusion (20) along the axial direction of the fixed seat (19), a sliding rod (22) is slidably arranged in the first guide hole (21), a second guide hole (23) is provided on the guide protrusion (20) perpendicular to the axial direction of the fixed seat (19), a clearance notch (24) is also provided on the peripheral wall of the fixed seat (19), an inclined guide groove (25) is provided on the sliding rod (22), an extension rod (26) is vertically connected to the lower end of the sliding rod (22), and the extension rod (26) passes through the clearance notch (24) and is fixedly connected to the stirring rod (17); A sliding cover (27), wherein the sliding cover (27) is slidably arranged on the inner wall of the fixed seat (19), two opposite first inclined surfaces (28) are protruding inwardly from the peripheral walls on both sides of the sliding cover (27), and a return spring (29) is connected between the inner wall of the sliding cover (27) and the top end of the sliding rod (22); A special-shaped block (30), wherein the special-shaped block (30) is slidably disposed in the second guide hole (23), and second inclined surfaces (31) matching the first inclined surfaces (28) are disposed at both ends of the special-shaped block (30), and the middle portion of the special-shaped block (30) is sleeved in the guide groove (25) and matches the shape of the guide groove (25); A triggering convex block (32) is arranged at the end of the transfer roller (3), and the triggering convex block (32) can press the sliding cover (27) during the circumferential rotation of the transfer roller (3).

9. A paper coating device according to claim 1, characterized in that: The machine base (1) is also provided with a scraper (6).

10. A paper coating device according to claim 8, characterized in that: The coating method of the coating device comprises the following steps: S1: Adjustment, adjusting the distance of the paper gap and laying out the paper; S2: coating, the transfer roller (3) rotates to dip the liquid in the liquid tank (2) into the transfer roller (3), the transfer roller (3) transfers the liquid to the first rubber roller (4), the first rubber roller (4) coats the liquid onto the paper in the paper feeding gap, the transfer roller (3) rotates to drive the stirring component to stir by reciprocating along the length direction of the liquid tank (2).

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