Gravure device and method for preparing multilayer wear-resistant wood grain decorative paper by using gravure device

Abstract

The invention relates to a gravure device and a method for preparing multilayer wear-resistant wood grain decorative paper by using the gravure device. The gravure device comprises a rack, the feeding wheel roller assembly is rotationally connected to the rack and used for conveying three layers of wear-resistant wood grain decorative paper to be printed; the printing wheel roller assembly comprises a pressing wheel roller and a gravure wheel roller which are rotationally connected with the rack, a gap is formed between the pressing wheel roller and the gravure wheel roller, an ink pond is arranged at the bottom of the gravure wheel roller, and the gravure wheel roller is partially arranged in the ink pond; and the pressing wheel roller is movably connected with the rack through the adjusting mechanism, and the adjusting mechanism drives the pressing wheel roller to move towards the gravure wheel roller. Errors caused by poor contact are reduced, key procedures such as bonding and printing are integrated in compact equipment, the number of times of transferring and positioning of materials among different procedures is reduced, and therefore errors caused by inaccurate transferring and positioning are reduced.

Description

Technical Field

[0001] The present application relates to the field of decorative paper printing, and in particular to a gravure printing device and a method for preparing multi-layer wear-resistant wood grain decorative paper using the gravure printing device. Background Art

[0002] In the production process of modern decorative materials, three-layer wear-resistant wood grain decorative paper is favored for its unique wear resistance and realistic wood grain effect. This kind of decorative paper is usually used in interior decoration fields such as furniture, floor, wall, etc., adding naturalness and beauty to the space.

[0003] In the printing process, due to factors such as paper transportation and the accuracy of the printing roller, certain errors may be introduced. Although these errors are small, they will gradually accumulate during the continuous printing process, resulting in deviations or distortions in the pattern and texture of the final product. This error is particularly significant when dealing with three-layer wear-resistant wood grain decorative paper with complex patterns and fine textures. Due to the continuous progress of multiple processes, each process may produce certain errors, and these errors will continue to accumulate in subsequent processes, eventually resulting in a significant deviation between the final quality of the product and the design requirements.

[0004] Therefore, in the prior art, how to effectively control the errors in these two processes to ensure the quality and accuracy of the final product has always been a technical problem that needs to be solved urgently. Summary of the invention

[0005] In order to reduce the printing error of three-layer wear-resistant wood-grain decorative paper, the present application provides a gravure printing device and a method for preparing multiple layers of wear-resistant wood-grain decorative paper using the gravure printing device.

[0006] The present application provides a gravure printing device that adopts the following technical solution: A gravure printing device comprises a frame; a feeding roller assembly, which is rotatably connected to the frame and is used to convey three-layer wear-resistant wood-grain decorative paper to be printed; a printing roller assembly, which comprises a pressing roller and a gravure roller, both of which are rotatably connected to the frame, a gap is provided between the pressing roller and the gravure roller, an ink pool is provided at the bottom of the gravure roller, and the gravure roller is partially arranged in the ink pool; an adjusting mechanism, the pressing roller is movably connected to the frame through the adjusting mechanism, and the adjusting mechanism drives the pressing roller to move toward the gravure roller.

[0007] By adopting the above technical solution, both the pressing roller and the gravure roller are rotatably connected to the frame, and are relatively movablely connected through an adjustment mechanism, so that the two can maintain close contact during the printing process, reducing errors caused by poor contact, integrating key processes such as bonding and printing into a compact device, reducing the number of times materials are transferred and positioned between different processes, thereby reducing errors caused by inaccurate transfer and positioning.

[0008] Optionally, the adjusting mechanism includes a cylinder and a slider, the cylinder body of the cylinder is fixedly connected to the frame, the piston rod of the cylinder is fixedly connected to the slider, the slider has an adjusting groove built in, the end of the pressing wheel roller is rotatably connected to an adjusting block, the adjusting block slides in the adjusting groove, an adjusting spring is arranged in the adjusting groove, one end of the adjusting spring is fixedly connected to the upper end surface of the adjusting groove, and the other end is fixedly connected to the lower end surface of the adjusting block.

[0009] By adopting the above technical solution, the setting of the adjustment spring can provide a certain elastic force between the adjustment block and the adjustment groove, ensuring that the pressure roller can always apply a constant pressure to the gravure roller during the printing process, which helps to maintain the stability and consistency of the printing quality. The adjustment spring can also play a role in buffering and shock absorption, reducing errors caused by mechanical vibration or impact, and further improving printing accuracy.

[0010] Optionally, the feeding roller assembly includes a second feeding roller for feeding the base layer paper tape, the second feeding roller is rotatably connected to the frame, a gluing assembly is provided between the feeding roller assembly and the printing roller assembly, and the base layer paper tape of the three-layer wear-resistant wood grain decorative paper passes around the gluing assembly.

[0011] By adopting the above technical solution, the gluing component automatically glues the base layer paper tape. By accurately controlling the application position and amount of adhesive, the gluing component can ensure fast and accurate bonding between each layer of material, thereby reducing the complexity and time cost of manual operation. Automated operation can also reduce errors introduced by human factors and improve product stability and consistency.

[0012] Optionally, the gluing assembly includes a first glue injection roller and a second glue injection roller, the frame is fixedly provided with a glue injector, the first glue injection roller and the second glue injection roller are both connected to the glue injector, the first glue injection roller is provided with a first hole connected to the glue injector, the second glue injection roller is provided with a second hole connected to the glue injector, one side of the base layer paper tape is fitted with the first hole of the first glue injection roller, and the other side of the base layer paper tape is fitted with the second hole of the second glue injector.

[0013] By adopting the above technical solution, the first glue injection roller and the second glue injection roller are responsible for the glue coating work on both sides of the base layer paper tape, ensuring the uniform distribution of glue on the surface paper tape. It is helpful to improve the bonding strength and stability of the subsequent decorative layer and the base layer paper tape. Through the precise control of the glue flow rate by the glue injector, it can be ensured that the amount of glue released by the holes on each glue injection roller is moderate. This helps to avoid waste and pollution caused by too much glue, and the problem of weak bonding caused by too little glue.

[0014] Optionally, the feeding roller assembly also includes a first feeding roller for feeding the wear-resistant layer paper tape and a third feeding roller for feeding the decorative layer paper tape, the first feeding roller and the third feeding roller are both rotatably connected to the frame, and the second feeding roller is arranged between the first feeding roller and the second feeding roller.

[0015] By adopting the above technical solutions, the precise loading and conveying process helps to reduce the damage and deformation of the paper tape during the processing, thereby ensuring the quality and stability of the product, helping to reduce errors and waste in the production process, and through the automated loading and conveying process, it can reduce the dependence on manual operation and labor costs. At the same time, continuous and stable paper tape conveying also helps to reduce production interruptions and downtime, further reducing production costs.

[0016] Optionally, a scraper is rotatably connected to the frame, and a tension spring is provided between the scraper and the frame, one end of the tension spring is fixed to the frame, and the other end is fixedly connected to the scraper, and the scraper is arranged to fit the outer periphery of the gravure roller.

[0017] By adopting the above technical solution, one end of the tensioning spring is fixed to the frame, and the other end is fixedly connected to the scraper, which can ensure that the scraper always maintains a certain tension during long-term use, thereby maintaining its close fit with the gravure roller, scraping off the excess ink on the gravure roller and returning it to the ink pool, thereby improving the overall quality and production efficiency of printed products.

[0018] Optionally, the gravure printing device also includes a drying box and a fan, the drying box is provided with a feed port and a discharge port both connected to the internal space, the fan is connected to the internal space of the drying box, the discharge port is provided with a winding motor and a winding roller, the winding roller is fixedly connected to the output shaft of the winding motor, and the winding motor drives the winding roller to rotate.

[0019] By adopting the above technical solution, the drying box provides a fast drying environment for the printed three-layer wear-resistant wood grain decorative paper through internal heating or ventilation. This helps the rapid evaporation and curing of the ink or coating, thereby shortening the production cycle.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: The pressing roller and the gravure roller are both rotatably connected to the frame and are relatively movable through an adjustment mechanism, so that the two can maintain close contact during the printing process, reducing errors caused by poor contact, integrating key processes such as bonding and printing into a compact device, reducing the number of material transfer and positioning between different processes, thereby reducing errors caused by inaccurate transfer and positioning; The setting of the adjustment spring can provide a certain elastic force between the adjustment block and the adjustment slot, ensuring that the closing roller can always exert a constant pressure on the gravure roller during the printing process, which helps to maintain the stability and consistency of the printing quality. The adjustment spring can also play a role in buffering and shock absorption, reducing the error caused by mechanical vibration or impact, and further improving the printing accuracy; The first glue injection roller and the second glue injection roller are responsible for the glue coating work on both sides of the base layer paper tape, ensuring the uniform distribution of glue on the surface paper tape. It helps to improve the bonding strength and stability of the subsequent decorative layer and the base layer paper tape. The precise control of the glue flow by the glue injector can ensure that the amount of glue released from the holes on each glue injection roller is moderate. This helps to avoid waste and pollution caused by too much glue, and weak bonding caused by too little glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a gravure printing device of the present application.

[0022] Figure 2 It is a schematic cross-sectional structure diagram of a feeding wheel roller assembly of the present application.

[0023] Figure 3 It is a structural schematic diagram of a printing roller assembly of the present application.

[0024] Figure 4 It is a schematic cross-sectional structure diagram of an adjustment mechanism of the present application.

[0025] Figure 5 It is a schematic cross-sectional structure diagram of a printing roller assembly of the present application.

[0026] Figure 6 It is a schematic cross-sectional structure diagram of a drying component of the present application.

[0027] Explanation of the reference numerals: 1. feeding roller assembly; 11. first feeding roller; 12. second feeding roller; 13. third feeding roller; 2. printing roller assembly; 21. gravure roller; 211. groove; 22. pressing roller; 23. ink pool; 24. scraper; 25. tension spring; 3. drying assembly; 31. drying box; 32. fan; 33. moisture absorption roller; 34. first adjusting roller; 35. second adjusting roller; 4. gluing assembly; 41. glue injector; 42. first A rubber injection roller; 421, a first cavity; 422, a first hole; 43, a second rubber injection roller; 431, a second cavity; 432, a second hole; 44, a winding motor; 45, a winding roller; 5, an adjustment mechanism; 51, a cylinder; 52, a slider; 53, an adjustment slot; 54, an adjustment block; 55, an adjustment spring; 6, a frame; 61, a slide; 100, a wear-resistant wood-grain decorative paper; 101, a wear-resistant layer paper tape; 102, a base layer paper tape; 103, a decorative layer paper tape. DETAILED DESCRIPTION

[0028] The present application is further described in detail below with reference to the accompanying drawings.

[0029] The embodiment of the present application discloses a gravure printing device.

[0030] Reference Figure 1 As shown, the gravure printing device includes a frame 6, a feeding roller assembly 1, a printing roller assembly 2 and a drying assembly 3. The feeding roller assembly 1, the printing roller assembly 2 and the drying assembly 3 are sequentially arranged on the frame 6, and the decorative paper to be printed is transported from the feeding roller assembly 1 to the printing roller assembly 2 for gravure printing, and finally transported to the drying assembly 3 for drying.

[0031] Reference Figure 2 As shown, in this embodiment, the feeding roller assembly 1 includes a first feeding roller 11, a second feeding roller 12 and a third feeding roller 13. The first feeding roller 11, the second feeding roller 12 and the third feeding roller 13 are all rotatably connected to the frame 6, and the central axis of the first feeding roller 11, the central axis of the second feeding roller 12 and the central axis of the third feeding roller 13 are arranged in parallel, and the second feeding roller 12 is located between the first feeding roller 11 and the third feeding roller 13.

[0032] In this embodiment, a gravure printing device is used to produce three layers of wear-resistant wood-grain decorative paper 100, which includes a wear-resistant layer paper tape 101, a base layer paper tape 102, and a decorative layer paper tape 103, and the three layers are bonded in sequence. Specifically, the first feeding roller 11 is wound around the wear-resistant layer paper tape 101, the second feeding roller 12 is wound around the base layer wear-resistant layer paper tape 101, and the third feeding roller 13 is wound around the decorative layer paper tape 103. The wear-resistant layer paper tape 101, the base layer paper tape 102, and the decorative layer paper tape 103 are simultaneously conveyed to the printing roller assembly 2 by the feeding roller assembly 1.

[0033] A glue-applying assembly 4 is provided between the printing roller assembly 2 and the feeding roller assembly 1, and is used for attaching glue to the base layer. Specifically, the glue-applying assembly 4 includes a glue injector 41, a first glue-injecting roller 42, and a second glue-injecting roller 43. The first glue-injecting roller 42 and the second glue-injecting roller 43 are both rotatably connected to the frame 6. The first glue-injecting roller 42 and the second glue-injecting roller 43 are both connected to the glue injector 41, and glue is injected into the first glue-injecting roller 42 and the second glue-injecting roller 43 through the glue injector 41. Specifically, the first glue-injecting roller 42 and the second glue-injecting roller 43 are both located between the second feeding roller 12 and the printing roller assembly 2, and the central axis of the first glue-injecting roller 42, the central axis of the second glue-injecting roller 43, and the central axis of the second feeding roller 12 are arranged in parallel. Specifically, the base layer paper tape 102 passes around the first glue injection roller 42 and the second glue injection roller 43 from one side of the feeding roller, that is, one side of the base layer paper tape 102 passes around the first glue injection roller 42 and the other side passes around the second glue injection roller 43.

[0034] Specifically, the first glue injection roller 42 has a first cavity 421 built in, and the outer circumference of the first glue injection roller 42 is provided with a plurality of first holes 422 connected to the first cavity 421, and the glue injector 41 is connected to the first cavity 421 of the first glue injection roller 42 through a hose, and glue is injected into the first cavity 421. The glue then flows out through the first hole 422, and the glue adheres to the surface of the base layer. The second glue injection roller 43 has a second cavity 431 built in, and the outer circumference of the second glue injection roller 43 is provided with a plurality of second holes 432 connected to the second cavity 431, and the glue injector 41 is connected to the second cavity 431 of the second glue injection roller 43 through a hose, and glue is injected into the second cavity 431. The glue then flows out through the second hole 432, and the glue adheres to the other surface of the base layer. The base layer paper tape 102 passes through the first glue injection roller 42 and the second glue injection roller 43, and glue is attached to both opposite sides of the base layer paper tape 102.

[0035] Reference Figure 3 and Figure 4As shown, the printing roller assembly 2 includes a gravure roller 21 and a pressing roller 22. Specifically, the pressing roller 22 and the gravure roller 21 are both rotatably connected to the frame 6, and a gap is left between the pressing roller 22 and the gravure roller 21 for the wear-resistant layer paper tape 101, the base layer paper tape 102 and the decorative layer paper tape 103 to pass through, so that the wear-resistant layer paper tape 101, the base layer paper tape 102 and the decorative layer paper tape 103 pass through the pressing roller 22 and the gravure roller 21 to be squeezed and bonded to form a three-layer wear-resistant wood grain decorative paper 100.

[0036] Specifically, the gravure roller 21 is arranged at the bottom of the pressing roller 22, that is, the rotation center axis of the gravure roller 21 and the rotation center axis of the pressing roller 22 are both arranged horizontally, and the rotation center axis of the gravure roller 21 and the rotation center axis of the pressing roller 22 are distributed in the vertical direction.

[0037] refer to Figure 4 As shown, preferably, an adjustment mechanism 5 is provided between the closing pressure roller 22 and the frame 6, and the frame 6 is provided with a slide groove 61 in the vertical direction. The adjustment mechanism 5 includes a cylinder 51 and a slider 52. The cylinder body of the cylinder 51 is fixedly connected to the frame 6, and the piston rod of the cylinder 51 moves in the slide groove 61 in the vertical direction. The end of the piston rod is fixedly connected to the slider 52, and the slider 52 slides in the slide groove 61. The slider 52 has an adjustment groove 53 built in it. The end of the closing pressure roller 22 is rotatably connected to an adjustment block 54 through a bearing, and the adjustment block 54 slides in the adjustment groove 53 in the vertical direction. More preferably, the adjustment block 54 is a rectangular parallelepiped structure, and the adjustment block 54 can fit the inner wall of the adjustment groove 53, so that the adjustment block 54 can only move in the vertical direction. An adjustment spring 55 is provided between the adjustment block 54 and the adjustment groove 53, and one end of the adjustment spring 55 is fixedly connected to the upper end surface of the adjustment groove 53, and the other end is fixedly connected to the lower end surface of the adjustment block 54.

[0038] In this embodiment, both ends of the closing and pressing roller 22 are movably connected to the frame 6 through a set of adjustment mechanisms 5, one of the adjustment mechanisms 5 has a cylinder 51 to provide power, and the other adjustment mechanism 5 is not provided with a cylinder 51. The cylinder 51 drives the closing and pressing roller 22 to move toward the gravure roller 21 to enhance the effect of printing and multi-layer bonding, and the adjustment spring 55 can avoid the risk of excessive pressure.

[0039] refer to Figure 5 As shown, the frame 6 is fixedly provided with an ink pool 23, and the ink pool 23 contains ink for printing the decorative layer paper tape 103, and the gravure roller 21 is partially immersed in the ink pool 23. Specifically, both ends of the ink pool 23 are fixedly provided on the frame 6, and the end of the ink pool 23 facing the gravure roller 21 is open, and the outer peripheral side of the gravure roller 21 is partially immersed in the ink pool 23. The surface of the gravure roller 21 is provided with a groove 211 for accommodating ink.

[0040] The frame 6 is rotatably connected with a scraper 24, and a tension spring 25 is also provided between the scraper 24 and the frame 6, one end of the tension spring 25 is fixedly arranged on the frame 6, and the other end is fixedly connected to the scraper 24. Under the action of the tension spring 25, the scraper 24 is arranged to fit the outer periphery of the gravure roller 21.

[0041] The gravure roller 21 rotates relative to the frame 6, and the groove 211 of the gravure roller 21 absorbs ink from the ink pool 23. The scraper 24 hangs the ink on the gravure surface and hangs the ink into the groove 211, so that the ink in the groove 211 is full, and at the same time, the excess ink is scraped off and flows into the ink pool 23. The ink in the groove 211 of the gravure roller 21 adheres to the surface of the decorative layer paper tape 103, and the decorative layer paper tape 103 is printed.

[0042] More specifically, the frame 6 is provided with a first drive motor and a first reducer. The first drive motor is connected to the gravure roller 21 through the first reducer. The first drive motor drives the gravure roller 21 to rotate at a constant speed, thereby controlling the rotation speed of the gravure roller 21 to match the moving speed of the three-layer wear-resistant wood grain decorative paper 100, ensuring that the pattern on the three-layer wear-resistant wood grain decorative paper 100 is clear.

[0043] More specifically, the height of the second glue injection roller 43 is lower than the height of the gravure roller 21, and a tensioning roller is provided on the side of the gravure roller 21 away from the second glue injection roller 43. The tensioning roller is rotatably connected to the frame 6, and the height of the tensioning roller is lower than the height of the gravure roller 21, thereby increasing the fitting area between the three-layer wear-resistant wood grain decorative paper 100 and the gravure roller 21, that is, increasing the fitting area between the surface of the decorative layer paper tape 103 and the gravure roller 21, thereby improving the gravure printing effect.

[0044] refer to Figure 6As shown, the drying assembly 3 includes a drying box 31 and a fan 32. The drying box 31 is fixed on the frame 6. The drying box 31 is provided with a feed port and a discharge port both of which are connected to the internal space. The feed port of the drying box 31 is rotatably connected with a moisture absorbing roller 33. The drying box 31 is provided with a first adjusting roller 34 and a second adjusting roller 35. The first adjusting roller 34 and the second adjusting roller 35 are both rotatably connected to the box body, and the rotation center axis of the first adjusting roller 34 is parallel to the rotation center axis of the first adjusting roller 34. The first adjusting roller 34 and the second adjusting roller 35 have a certain distance in the horizontal direction and the vertical direction. The three-layer wear-resistant wood grain decorative paper 100 sequentially bypasses the first adjusting roller 34 and the second adjusting roller 35, so that the three-layer wear-resistant wood grain decorative paper 100 spends a longer time in the drying box 31, thereby improving the drying effect. Preferably, a plurality of groups of first adjusting rollers 34 and a plurality of groups of second adjusting rollers 35 are arranged in the drying box 31, and the three-layer wear-resistant wood grain decorative paper 100 sequentially passes around the plurality of groups of first adjusting rollers 34 and the plurality of groups of second adjusting rollers 35, which greatly increases the time that the three-layer wear-resistant wood grain decorative paper 100 stays in the drying box 31.

[0045] In this embodiment, two fans 32 are provided, and both fans 32 are fixed on the drying box 31 and input dry air into the drying box 31 to dry the three-layer wear-resistant wood-grain decorative paper 100 in the drying box 31. Preferably, the fans 32 are facing the decorative layer paper tape 103 of the three-layer wear-resistant wood-grain decorative paper 100. More preferably, the wind direction of the wind blown by the fans 32 is perpendicular to the decorative layer paper tape 103, so as to improve the drying effect. The drying box 31 is provided with a heat dissipation window, which is connected to the internal space of the drying box 31, and the air in the drying box 31 can flow out from the heat dissipation window.

[0046] A winding motor 44 and a winding roller 45 are provided at the outlet of the drying box 31. The winding motor 44 is fixed on the drying box 31. One end of the winding roller 45 is fixedly connected to the output shaft of the winding motor 44, and the other end is rotatably connected to the drying box 31. The winding motor 44 drives the winding roller 45 to rotate, thereby winding up the three-layer wear-resistant wood grain decorative paper 100.

[0047] The implementation principle of Example 1 is as follows: the wear-resistant layer paper tape 101 is fed through the first feeding roller 11, the base layer paper tape 102 is fed through the second feeding roller 12, and the decorative layer paper tape 103 is fed through the third feeding roller 13. The base layer paper tape 102 passes through the first glue injection roller 42 and the second glue injection roller 43, and the first glue injection roller 42 and the second glue injection roller 43 inject glue on both sides of the base layer paper tape 102. Then, the wear-resistant layer paper tape 101, the base layer paper tape 102 and the decorative layer paper tape 103 enter between the gravure roller 21 and the closing roller 22 synchronously, the gravure roller 21 rotates, the groove 211 absorbs ink from the ink pool 23, and the scraper 24 removes the excess ink of the gravure roller 21, and the ink in the groove 211 of the gravure roller 21 is printed on the surface of the decorative layer paper where the gravure roller 21 is attached to the decorative layer paper.

[0048] The cylinder 51 drives the closing and pressing roller 22 to move toward the gravure roller 21, and at the same time adjusts the compression of the spring 55 so that the closing and pressing roller 22 presses the gravure roller 21, which on the one hand increases the bonding effect of the three-layer wear-resistant wood-grain decorative paper 100. On the other hand, it improves the printing effect and avoids damage to the three-layer wear-resistant wood-grain decorative paper 100 caused by excessive pressure.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gravure printing device, characterized in that: include Rack (6); A feeding roller assembly (1) is rotatably connected to the frame (6) and is used to convey three-layer wear-resistant wood-grain decorative paper (100) to be printed; A printing roller assembly (2), comprising a combined pressure roller (22) and a gravure roller (21) both rotatably connected to a frame (6), a gap being provided between the combined pressure roller (22) and the gravure roller (21), an ink pool (23) being provided at the bottom of the gravure roller (21), and a portion of the gravure roller (21) being disposed in the ink pool (23); An adjusting mechanism (5), wherein the closing pressure roller (22) is movably connected to the frame (6) via the adjusting mechanism (5), and the adjusting mechanism (5) drives the closing pressure roller (22) to move in the direction of the gravure printing roller (21).

2. The gravure printing device according to claim 1, characterized in that: The adjustment mechanism (5) comprises a cylinder (51) and a slider (52); the cylinder body of the cylinder (51) is fixedly connected to the frame (6); the piston rod of the cylinder (51) is fixedly connected to the slider (52); an adjustment groove (53) is built in the slider (52); an end of the pressure roller (22) is rotatably connected to an adjustment block (54); the adjustment block (54) slides in the adjustment groove (53); an adjustment spring (55) is arranged in the adjustment groove (53); one end of the adjustment spring (55) is fixedly connected to the upper end surface of the adjustment groove (53); and the other end is fixedly connected to the lower end surface of the adjustment block (54).

3. The gravure printing device according to claim 1, characterized in that: The feeding roller assembly (1) comprises a second feeding roller (12) for feeding a base layer paper tape (102); the second feeding roller (12) is rotatably connected to the frame (6); a gluing assembly (4) is provided between the feeding roller assembly (1) and the printing roller assembly (2); the base layer paper tape (102) of the three-layer wear-resistant wood grain decorative paper (100) passes around the gluing assembly (4).

4. The gravure printing device according to claim 3, characterized in that: The glue application assembly (4) comprises a first glue injection roller (42) and a second glue injection roller (43); the frame (6) is fixedly provided with a glue injector (41); the first glue injection roller (42) and the second glue injection roller (43) are both connected to the glue injector (41); the first glue injection roller (42) is provided with a first hole (422) connected to the glue injector (41); the second glue injection roller (43) is provided with a second hole (432) connected to the glue injector (41); one side of the base layer paper tape (102) is in contact with the first hole (422) of the first glue injection roller (42); and the other side of the base layer paper tape (102) is in contact with the second hole (432) of the second glue injector (41).

5. The gravure printing device according to claim 3, characterized in that: The feeding roller assembly (1) further comprises a first feeding roller (11) for feeding the wear-resistant layer paper tape (101) and a third feeding roller (13) for feeding the decorative layer paper tape (103), wherein the first feeding roller (11) and the third feeding roller (13) are both rotatably connected to the frame (6), and the second feeding roller (12) is arranged between the first feeding roller (11) and the second feeding roller (12).

6. The gravure printing device according to claim 1, characterized in that: A scraper (24) is rotatably connected to the frame (6), and a tension spring (25) is provided between the scraper (24) and the frame (6). One end of the tension spring (25) is fixedly arranged on the frame (6), and the other end is fixedly connected to the scraper (24). The scraper (24) is arranged to fit the outer periphery of the gravure printing roller (21).

7. The gravure printing device according to claim 1, characterized in that: The gravure printing device further comprises a drying box (31) and a fan (32); the drying box (31) is provided with a feed inlet and a discharge outlet both of which are communicated with the internal space; the fan (32) is communicated with the internal space of the drying box (31); the discharge outlet is provided with a winding motor (44) and a winding roller (45); the winding roller (45) is fixedly connected to the output shaft of the winding motor (44); and the winding motor (44) drives the winding roller (45) to rotate.

8. A method for adjusting a gravure printing device, using the gravure printing device according to claim 1, characterized in that: The steps include: A1. The wear-resistant layer paper tape (101), the base layer paper tape (102), and the decorative layer paper tape (103) to be processed are respectively input from the feeding roller assembly (1), the wear-resistant layer paper tape (101) is fed through the first feeding roller (11), the base layer paper tape (102) is fed through the second feeding roller (12), and the decorative layer paper tape (103) is fed through the third feeding roller (13); A2, the base layer paper tape (102) passes through a first glue injection roller (42) and a second glue injection roller (43), and the first glue injection roller (42) and the second glue injection roller (43) inject glue on both sides of the base layer paper tape (102); A3, the wear-resistant layer paper tape (101), the base layer paper tape (102) and the decorative layer paper tape (103) are synchronously introduced between the gravure roller (21) and the pressing roller (22), the gravure roller (21) rotates, the groove (211) absorbs ink from the ink pool (23), and the scraper (24) removes excess ink from the gravure roller (21), and the ink in the groove (211) is printed on the surface of the gravure roller (21) where the gravure roller (21) and the decorative layer paper are bonded.

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