Printing apparatus and process for water-based ink decorated paper

Abstract

The application discloses a printing device and process of water-based ink decorative paper, and the printing device comprises a printing support, an upper printing plate mechanism, a printing cylinder and a lower printing plate mechanism; the upper printing plate mechanism comprises an upper printing plate cylinder, an upper printing plate cylinder driving assembly for driving the upper printing plate cylinder to rotate and an upper printing plate inking assembly arranged directly above the upper printing plate cylinder; the printing cylinder mechanism comprises a printing cylinder and a printing cylinder driving assembly for driving the printing cylinder to rotate; the lower printing plate mechanism comprises a lower printing plate cylinder, a lower printing plate cylinder driving assembly for driving the lower printing plate cylinder to rotate and a lower printing plate inking assembly arranged directly below the lower printing plate cylinder; a paper feeding mechanism and a paper discharging mechanism are arranged in a paper feeding and discharging box; a paper discharging drying cavity is arranged in the paper feeding and discharging box; an intermediate guide mechanism is arranged in the drying box; the intermediate guide mechanism comprises an intermediate guide roller; two printing processes are completed by one printing device, the printing efficiency is improved, the use of the printing device is reduced, and the expenditure of the site cost is reduced.

Description

Technical Field

[0001] This application relates to the field of gravure printing, and in particular to printing equipment and process for water-based ink decorative paper. Background Technology

[0002] Decorative paper is usually combined with substrates such as furniture boards, wall panels, door panels, and flooring to create decorative panels. Decorative paper makes decorative panels beautiful and smooth, and also has functions such as wear resistance, corrosion resistance, and water resistance. It is widely used in public places, medical environments, kindergartens, schools, and home environments.

[0003] Currently, traditional water-based ink printing of decorative paper uses gravure printing, which requires multiple printing steps. Therefore, it is often carried out using assembly line printing equipment, with one printing machine on the assembly line completing one printing step. However, this design makes the entire printing assembly line occupy a large area and requires a large factory, which increases the cost. Summary of the Invention

[0004] In order to reduce the footprint of printing equipment, this application provides a printing equipment and process for water-based ink decorative paper.

[0005] The printing equipment and process for water-based ink decorative paper provided in this application adopt the following technical solution: A printing apparatus for water-based ink decorative paper includes an inlet / outlet carton, a printing unit, and a drying unit; the drying unit includes a drying chamber; the printing unit is located between the inlet / outlet carton and the drying chamber; the printing unit includes a printing support, an upper printing plate mechanism, an impression cylinder, and a lower printing plate mechanism; the upper printing plate mechanism, the impression cylinder mechanism, and the lower printing plate mechanism are all mounted on the printing support and distributed from top to bottom; the upper printing plate mechanism includes an upper printing plate cylinder, an upper printing plate cylinder drive assembly for driving the upper printing plate cylinder to rotate, and an upper printing plate inking assembly located directly above the upper printing plate cylinder; the impression cylinder mechanism includes an impression cylinder and an impression cylinder for driving the impression cylinder to rotate. A roller drive assembly; the lower printing plate mechanism includes a lower printing plate cylinder, a lower printing plate cylinder drive assembly for driving the lower printing plate cylinder to rotate, and a lower printing plate inking assembly disposed directly below the lower printing plate cylinder; the inlet / outlet paper box is provided with a paper feeding mechanism and a paper output mechanism; the inlet / outlet paper box is provided with a paper output drying chamber; the drying chamber is provided with an intermediate guide mechanism; the intermediate guide mechanism includes an intermediate guide roller; the rotation center axes of the intermediate guide roller and the impression cylinder are on the same horizontal plane; the decorative paper passes sequentially through the paper feeding mechanism, the gap between the lower printing plate cylinder and the impression cylinder, the intermediate guide roller, the gap between the upper printing plate cylinder and the impression cylinder, and the paper output mechanism.

[0006] By adopting the above technical solution, during printing, the decorative paper first passes through the paper feeding mechanism, then through the lower printing plate cylinder and the impression cylinder for the first printing pass, then through the drying chamber for drying, then through the upper printing plate cylinder and the impression cylinder for the second printing pass, then enters the paper output drying chamber for drying, and finally is output through the paper output mechanism. In this way, one printing machine completes two printing passes, which improves printing efficiency, reduces the use of printing equipment, and reduces site costs.

[0007] Optionally, the paper feeding mechanism includes a first paper feeding roller and a second paper feeding roller assembly rotatably connected to the infeed and outfeed cartons; the second paper feeding roller assembly is disposed on the side of the first paper feeding roller near the printing device; the second paper feeding roller assembly includes a second paper feeding roller seat, a second paper feeding roller rotatably connected to the second paper feeding roller seat, and a paper feeding lifting component for driving the second paper feeding roller seat to move vertically; the intermediate guide mechanism further includes an intermediate guide roller seat and a horizontal adjustment component for driving the intermediate guide roller seat to move horizontally; the intermediate guide roller is rotatably connected to the intermediate guide roller seat; the paper output mechanism includes a first paper output roller seat disposed in the paper output drying chamber, a first paper output roller rotatably connected to the first paper output roller seat, a paper output lifting component for driving the first paper output roller seat to move vertically, and a second paper output roller rotatably connected to the infeed and outfeed cartons; the second paper output roller is located outside the paper output drying chamber and below the first paper output roller.

[0008] By adopting the above technical solution, the tension of the decorative paper can be adjusted by vertically raising and lowering the second paper feed roller, horizontally moving the intermediate guide roller, and vertically raising and lowering the first paper output roller. At the same time, the relative relationship between the two printing passes can be controlled, thus improving the printing quality.

[0009] Optionally, the paper drying chamber is opened at one end near the printing device, and an opening and closing device is provided on the upper side wall of the opening; the drying box is opened at one end near the printing device, and opening and closing devices are respectively provided on the upper and lower side walls of the opening; the opening and closing device includes an L-shaped opening and closing frame that is vertically movable and an opening and closing drive mechanism for driving the opening and closing frame to move vertically; the vertical part of the opening and closing frame is formed into a semi-cylindrical surface at the end near the decorative paper.

[0010] By adopting the above technical solution, the presence of the opening and closing frame can reduce heat loss, and the vertically moving opening and closing frame can accommodate different entry and exit angles of decorative paper.

[0011] Optionally, a blowing device is provided in the paper drying chamber; a pair of blowing devices are provided in the drying box; the blowing device includes a blowing impeller and a blowing drive mechanism for rotating the blowing impeller; the blowing impeller is perpendicular to the printing surface of the decorative paper.

[0012] By adopting the above technical solution, the blowing drive mechanism drives the blowing impeller to rotate, so that the hot airflow from the paper drying chamber blows vertically onto the printing surface of the decorative paper, thus accelerating the drying of the decorative paper; at the same time, the blowing impeller is always perpendicular to the printing surface of the decorative paper, thus adapting to different entry and exit angles of the decorative paper.

[0013] Optionally, the blowing drive mechanism includes a blowing drive main shaft rotatably connected between a pair of side walls of the paper output drying chamber or between a pair of side walls of the drying box, a blowing drive assembly for driving the blowing drive main shaft to rotate, a blowing support plate for rotating around the blowing drive main shaft, an angle drive assembly for driving the blowing support plate to rotate, and a blowing center column perpendicularly inserted and rotatably connected to the blowing support plate; a driving bevel gear is coaxially fixed on the blowing drive main shaft; a driven bevel gear is coaxially fixed at the end of the blowing center column away from the blowing impeller; the driving bevel gear meshes with the driven bevel gear.

[0014] By adopting the above technical solution, when it is necessary to change the direction of the blowing impeller, the angle drive component drives the blowing support plate to rotate around the blowing drive main shaft. During this process, the driven bevel gear rolls along the driving bevel gear. When working, the blowing drive component drives the blowing drive main shaft to rotate. Through the meshing driving bevel gear and driven bevel gear, the blowing center column is driven to rotate, thereby driving the blowing impeller to rotate. This structure is simple and can both satisfy the need to change the blowing impeller angle and drive the blowing impeller to rotate.

[0015] Optionally, the upper printing plate inking assembly includes an upper printing plate ink fountain and an ink outlet adjustment component; the upper printing plate ink fountain is a cuboid with an isosceles triangular shape at its lower end and is hollow inside; the bottom of the upper printing plate ink fountain is formed with a rectangular ink outlet hole with openings at the top and bottom; the ink outlet adjustment component includes an ink outlet adjustment block that is vertically movable inside the upper printing plate ink fountain and an adjustment drive component for driving the ink outlet adjustment block to move vertically up and down; the ink outlet adjustment block is a cuboid with an isosceles triangular shape at its lower end and its apex is directly opposite the upper opening of the ink outlet hole.

[0016] By adopting the above technical solution, the driving component is adjusted to drive the ink outlet adjusting block to move vertically up and down, thereby changing the gap between the inclined surface of the ink outlet adjusting block and the edge of the upper opening of the ink outlet hole, thus changing the amount of ink flowing out per unit time, and thus adapting to different printing situations.

[0017] Optionally, the lower end of the upper printing plate ink fountain is formed with a vertically arranged ink suction seat and a scraper seat; the ink suction seat and the scraper seat are located on both sides of the tip of the upper printing plate ink fountain, with the ink suction seat close to the inlet / outlet carton and the scraper seat close to the drying box; the bottom of the ink suction seat and the scraper seat are respectively formed into arc surfaces that cooperate with the upper printing plate cylinder; the ink suction seat is provided with an ink suction component; the scraper seat is provided with a scraper component.

[0018] By adopting the above technical solution, the ink from the ink outlet is drawn into the groove on the cylindrical surface of the rotating upper printing plate cylinder between the ink suction seat and the ink scraper seat, thus completing the ink application. At the same time, the ink suction component is used to remove the ink remaining in the groove on the cylindrical surface of the upper printing plate cylinder after printing, and the ink scraper component scrapes the ink from the blank areas on the cylindrical surface of the upper printing plate cylinder to avoid contaminating the decorative paper.

[0019] Optionally, the ink suction base has a rectangular groove-shaped ink collection groove inside; a radially arranged ink inlet groove is formed on the arc surface of the ink suction base; the upper end of the ink inlet groove is connected to the upper end of the side wall of the ink collection groove near the ink scraper base; the ink suction assembly is used to connect the ink collection groove and the upper printing plate ink fountain; the ink suction assembly generates suction at the bottom opening of the ink inlet groove and draws the ink back into the upper printing plate ink fountain.

[0020] By adopting the above technical solution, the ink suction assembly draws the ink retained in the grooves on the cylindrical surface of the printing plate cylinder back into the ink fountain of the upper printing plate, thus reducing ink waste.

[0021] Optionally, the bottom of the scraper holder is formed with a vertically arranged vertical moving groove; the scraper assembly includes a scraper holder that is vertically and elastically movable within the vertical moving groove; the elastic force acting on the scraper holder is adjustable.

[0022] By adopting the above technical solution, the doctor blade elastically abuts against the printing plate cylinder, and the elastic force acting on the doctor blade is adjustable, so as not to affect the rotation of the printing plate cylinder while scraping off the ink.

[0023] A printing process for water-based ink decorative paper, using the aforementioned printing equipment to print the decorative paper.

[0024] By adopting the above technical solutions, it is beneficial to reduce the floor space occupied by printing equipment.

[0025] In summary, the beneficial effects of this application are as follows: 1. One printing machine completes two printing processes, which improves printing efficiency and reduces the use of printing equipment, thereby reducing site costs.

[0026] 2. Adjusting the tension of the decorative paper can also control the relative relationship between the two printing passes, thus improving the printing quality.

[0027] 3. By changing the amount of ink flowing out per unit time, it can be adapted to different printing conditions. Attached Figure Description

[0028] Figure 1 This is a frontal structural diagram of this application.

[0029] Figure 2 This is a cross-sectional structural diagram of this application.

[0030] Figure 3 This application is Figure 2 A partially enlarged structural diagram of A in the diagram.

[0031] Figure 4 This application is Figure 2 A partially enlarged structural diagram of B in the diagram.

[0032] Figure 5 This application is Figure 2 A partially enlarged structural diagram of C in the diagram.

[0033] Figure 6 This application is Figure 2 A partially enlarged structural diagram of D in the diagram.

[0034] Figure 7 This is a schematic diagram of the connection structure of the intermediate guide roller 45 in this application.

[0035] Figure 8 This is a schematic diagram of the connection structure of the first paper output roller 74 of this application.

[0036] Explanation of reference numerals in the attached figures: 10. Inlet / outlet carton; 100. Paper outlet drying chamber; 101. Vertical guide groove; 102. Vertical guide groove on the paper outlet side; 105. Paper inlet; 106. Lower perforation; 107. Paper inlet cavity; 11. Vertical guide rod; 20. Paper feeding mechanism; 21. Cleaning assembly; 211. Upper cleaning seat; 212. Upper cleaning roller; 213. Lower cleaning support seat; 214. Horizontal connecting plate; 215. First compression spring; 216. Lower cleaning roller; 22. First paper feed roller; 23. Second paper feed roller assembly; 231. Paper feeding lifting electric cylinder; 232. Second paper feed roller seat; 233. Second paper feed roller; 30. Printing apparatus; 31. Printing stand; 310. Ink trough; 311. Pump support plate; 32. Lower printing plate cylinder; 321. Lower printing plate cylinder drive motor; 33. Lower doctor blade; 34. Impression cylinder; 341. Impression cylinder drive motor; 35. Upper printing plate cylinder; 351. Upper printing plate cylinder drive motor; 36. Upper printing plate ink fountain; 360. Ink outlet; 361. Ink suction base; 3610. Ink collection tank; 3611. External connecting groove; 3612. Ink inlet trough; 362. Doctor blade base; 3620. Vertical moving groove; 3621. Vertical side groove; 36 3. Adjusting support plate; 364. Upper guide rod; 37. Ink output adjusting component; 371. Adjusting drive cylinder; 372. Adjusting drive plate; 373. Vertical connecting rod; 374. Ink output adjusting block; 38. Ink suction assembly; 381. Suction port connecting plate; 382. Water pump; 383. Filter tank; 3831. Filter tank seat; 3832. Filter plate; 3833. Upper cover plate; 3834. Liquid guide pipe; 384. Water inlet pipe; 385. Water outlet pipe; 39. Doctor blade assembly; 391. Adjusting bolt; 392. Elastic drive plate; 393. Second compression spring; 394. Doctor blade seat; 40. Drying device; 41. Drying box; 410. Drying guide trough; 411. Horizontal adjustment moving trough; 412. Support foot; 42. Horizontal adjustment motor; 43. Horizontal adjustment screw; Intermediate guide roller seat; 441. Horizontal adjustment drive plate; 45. Intermediate guide roller; 46. Intermediate guide roller drive motor; 50. Opening and closing device; 51. Opening and closing frame; 52. Opening and closing drive bolt; 60. Blowing device; 600. Angle drive guide groove; 61. Blowing drive motor; 62. Blowing drive main shaft; 621. Driving bevel gear; 63. Angle drive motor; 64. Angle drive gear; 65. Angle drive ring; 651. Angle drive gear ring; 652. Angle drive block; 66. Blowing support plate; 67. Blowing center column; 68. Driven bevel gear; 69. Blowing impeller; 70. Paper output mechanism; 71. Paper output lifting motor; 72. Paper output lifting screw; 73. First paper output roller frame; 74. First paper output roller; 75. First paper output motor; 76. Second paper output roller; 80. Decorative paper. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0038] This application discloses a printing apparatus for water-based ink decorative paper, with reference to... Figure 1 and Figure 2The system includes an inlet / outlet carton 10, a printing device 30, and a drying device 40; the inlet / outlet carton 10, the printing device 30, and the drying device 40 are arranged sequentially; the inlet / outlet carton 10 is provided with a paper output drying chamber 100 and a paper input chamber 107; the paper output drying chamber 100 is provided with a heating component (not shown) and a temperature control component (not shown); the paper output drying chamber 100 is located above the paper input chamber 107; the inlet / outlet carton 10 is provided with a paper input mechanism 20 and a paper output mechanism 70; the paper input mechanism 20 is located inside the paper input chamber 107; the decorative paper 80 passes sequentially through the paper input mechanism 20, the printing device 30, the drying device 40, the printing device 30, and the paper output mechanism 70.

[0039] refer to Figure 2 and Figure 3 A rectangular paper inlet 105 with a horizontal opening is formed on the side wall of the paper inlet 107 away from the printing device 30. The paper feeding mechanism 20 includes a cleaning component 21 disposed in the paper inlet 105, a first paper feed roller 22 and a second paper feed roller assembly 23 rotatably connected to the paper tray 10. The cleaning component 21 includes an upper cleaning member disposed at the upper end of the paper inlet 105 and a lower cleaning member disposed at the lower end of the paper inlet 105. The upper cleaning member includes an upper cleaning seat 211 fixed to the upper side wall of the paper inlet 105, a pair of upper cleaning rollers 212 rotatably connected to the lower end of the upper cleaning seat 211, and a pair of upper cleaning motors for driving the upper cleaning rollers 212 to rotate. A cuboid is formed in the middle of the lower side wall of the paper inlet 105. The lower cleaning component includes a vertical insert plate; the lower cleaning component includes a U-shaped lower cleaning support 213 with the opening facing downwards; several vertical guide rods 11 are formed on the lower side wall of the paper inlet 105; horizontal connecting plates 214 are formed on the end faces of a pair of vertical parts of the lower cleaning support 213 that are close to each other; the horizontal connecting plates 214 are vertically sleeved on the vertical guide rods 11 on the corresponding sides; a first compression spring 215 is sleeved on the vertical guide rods 11; the upper end of the first compression spring 215 abuts against the upper end face of the horizontal connecting plate 214, and the lower end abuts against the lower side wall of the paper inlet cavity 107; a pair of horizontally distributed lower cleaning rollers 216 and a pair of lower cleaning motors that drive the lower cleaning rollers 216 to rotate are rotatably connected to the upper end of the lower cleaning support 213.

[0040] refer to Figure 2 The second feed roller assembly 23 is disposed on the side of the first feed roller 22 near the printing device 30. The second feed roller assembly 23 includes a second feed roller seat 232, a second feed roller 233 rotatably connected to the second feed roller seat 232, and a feed lifting component for driving the second feed roller seat 232 to move vertically up and down. The second feed roller 233 is higher than the first feed roller 22. The feed lifting component includes a plurality of feed lifting electric cylinders 231 fixed on the lower side wall of the feed cavity 107. The second feed roller seat 232 is fixed to the upper end of the piston rod of the feed lifting electric cylinder 231.

[0041] refer to Figure 2The printing apparatus 30 includes a printing support 31, an upper printing plate mechanism, an impression cylinder 34, and a lower printing plate mechanism; the upper printing plate mechanism, the impression cylinder mechanism, and the lower printing plate mechanism are all mounted on the printing support 31 and are distributed from top to bottom.

[0042] refer to Figure 2 The upper printing plate mechanism includes an upper printing plate cylinder 35, an upper printing plate cylinder drive assembly for driving the upper printing plate cylinder 35 to rotate, and an upper printing plate inking assembly disposed directly above the upper printing plate cylinder 35; the impression cylinder mechanism includes an impression cylinder 34 and an impression cylinder drive assembly for driving the impression cylinder 34 to rotate; the lower printing plate mechanism includes a lower printing plate cylinder 32, a lower printing plate cylinder drive assembly for driving the lower printing plate cylinder 32 to rotate, and a lower printing plate inking assembly disposed directly below the lower printing plate cylinder 32.

[0043] refer to Figure 1 and Figure 2 The printing support 31 is shaped like the letter "U". The lower printing plate cylinder 32 is rotatably connected between a pair of vertical parts of the printing support 31. The lower printing plate inking assembly includes an ink groove 310 formed on the upper end surface of the horizontal part of the printing support 31 and an inclined lower scraper 33 fixed to the upper end of the ink groove 310 near the second feed roller assembly 23. The end of the lower scraper 33 near the second feed roller assembly 23 is lower than the end away from the second feed roller assembly 23. The end of the lower scraper 33 away from the second feed roller assembly 23 is pointed and abuts against the cylindrical surface of the lower printing plate cylinder 32. The lower part of the lower printing plate cylinder 32 is immersed in the ink in the ink groove 310. The lower printing plate cylinder drive assembly includes a lower printing plate cylinder drive motor 321 fixed on the outer end surface of the printing support 31. The rotating shaft of the lower printing plate cylinder 32 is coaxially and fixedly connected to the output shaft of the lower printing plate cylinder drive motor 321.

[0044] refer to Figure 1 and Figure 2 The impression cylinder drive assembly includes an impression cylinder drive motor 341 fixed on the outer end face of the printing bracket 31; the impression cylinder 34 is rotatably connected between a pair of vertical parts of the printing bracket 31; the rotating shaft of the impression cylinder 34 is coaxially and fixedly connected to the output shaft of the impression cylinder drive motor 341.

[0045] refer to Figure 1 and Figure 2 The upper printing plate cylinder drive assembly includes an upper printing plate cylinder drive motor 351 fixed on the outer end face of the printing support 31; the upper printing plate cylinder 35 is rotatably connected between a pair of vertical parts of the printing support 31; the rotating shaft of the upper printing plate cylinder 35 is coaxially and fixedly connected to the output shaft of the upper printing plate cylinder drive motor 351.

[0046] refer to Figure 2 and Figure 5The upper printing plate inking assembly includes an upper printing plate ink fountain 36 and an ink outlet adjusting component 37. The upper printing plate ink fountain 36 is a cuboid with an isosceles triangular shape at its lower end and is hollow inside. The bottom of the upper printing plate ink fountain 36 is formed with a rectangular ink outlet hole 360 ​​with openings at the top and bottom. The ink outlet adjusting component 37 includes an ink outlet adjusting block 374 vertically movable inside the upper printing plate ink fountain 36 and an adjusting drive component for driving the ink outlet adjusting block 374 to move vertically up and down. The adjusting drive component includes an adjusting drive cylinder 371 fixed to the upper end surface of the upper printing plate ink fountain 36, an adjusting drive plate 372 fixed to the lower end of the piston rod of the adjusting drive cylinder 371, and a pair of vertical connecting rods 373 fixed to the lower end surface of the adjusting drive plate 372. The ink outlet adjusting block 374 is fixed to the lower end of the pair of vertical connecting rods 373. The ink outlet adjusting block 374 is a cuboid with an isosceles triangular shape at its lower end, with its apex facing the upper opening of the ink outlet hole 360.

[0047] refer to Figure 2 and Figure 5 The lower end of the upper printing plate ink fountain 36 is formed with a vertically arranged ink suction seat 361 and a doctor blade seat 362; the ink suction seat 361 and the doctor blade seat 362 are located on both sides of the tip of the upper printing plate ink fountain 36, with the ink suction seat 361 close to the inlet / outlet carton 10 and the doctor blade seat 362 close to the drying device 40; the bottom of the ink suction seat 361 and the doctor blade seat 362 are respectively formed into arc surfaces that cooperate with the upper printing plate cylinder 35; an ink suction component 38 is provided on the ink suction seat 361; and a doctor blade component 39 is provided on the doctor blade seat 362.

[0048] refer to Figure 2 and Figure 5 A rectangular groove-shaped outer connecting groove 3611 is formed on the end face of the ink suction base 361 away from the doctor blade base 362; a rectangular groove-shaped ink collection groove 3610 is formed on the inner side wall of the outer connecting groove 3611; a radially arranged ink inlet groove 3612 is formed on the arc surface of the ink suction base 361; the upper end of the ink inlet groove 3612 is connected to the upper end of the side wall of the ink collection groove 3610 near the doctor blade base 362.

[0049] refer to Figure 2 , Figure 5 and Figure 6A pump support plate 311 is formed between a pair of vertical parts of the printing support 31; the ink suction assembly 38 includes a water pump 382 fixed on the pump support plate 311, a suction port connecting plate 381 fixed in the outer connecting groove 3611 by bolts, and a filter tank 383; a water inlet pipe 384 is fixed on the suction port connecting plate 381; the water inlet pipe 384 is connected to the ink collection tank 3610; the other end of the water inlet pipe 384 is connected to the water inlet end of the water pump 382; the filter tank 383 includes a rectangular frame-shaped filter tank seat 3831 with an upper opening fixed on the upper printing plate ink fountain 36; the bottom of the filter tank seat 3831 and the water pump 382 are connected to the ink collection tank 3611. A water outlet pipe 385 is connected between the water outlet ends of 82; a one-way valve is installed on the water outlet pipe 385; a top cover plate 3833 is fixedly connected to the upper end of the filter tank seat 3831 by bolts; a filter plate 3832 is installed on the upper part of the filter tank seat 3831; a liquid guide pipe 3834 is connected between the filter tank seat 3831 and the upper printing plate ink fountain 36; the liquid guide pipe 3834 is inclined and its end near the filter tank seat 3831 is higher than its end near the upper printing plate ink fountain 36; the upper end of the liquid guide pipe 3834 is higher than the filter plate 3832.

[0050] refer to Figure 2 and Figure 5 The bottom of the scraper holder 362 is formed with a vertically arranged vertical moving groove 3620; the scraper assembly 39 includes a scraper holder 394 that is vertically and elastically movable in the vertical moving groove 3620; the elasticity of the scraper holder 394 is adjustable.

[0051] refer to Figure 2 and Figure 5 A vertical side groove 3621 is formed on the upper end of the side wall of the vertical moving groove 3620 away from the ink suction seat 361; several evenly distributed upper guide rods 364 are formed on the upper side wall of the vertical moving groove 3620; an elastic drive plate 392 is vertically moved within the vertical moving groove 3620 and the vertical side groove 3621; the elastic drive plate 392 is vertically sleeved on the upper guide rods 364; a second compression spring 393 is sleeved on the lower part of the upper guide rods 364; the upper end of the second compression spring 393 abuts against the lower end face of the elastic drive plate 392, and the lower end abuts against the upper end face of the ink scraper seat 394; a pair of vertically distributed adjusting support plates 363 are formed on the end face of the ink scraper seat 362 away from the ink suction seat 361; a vertically arranged adjusting bolt 391 is rotatably connected between the pair of adjusting support plates 363; the elastic drive plate 392 is screwed onto the adjusting bolt 391.

[0052] refer to Figure 2The drying device 40 includes a drying chamber 41; a heating component (not shown) and a temperature control component (not shown) are provided inside the drying chamber 41; the drying chamber 41 has an opening at one end near the impression cylinder 34; four rectangularly distributed support feet 412 are installed on the bottom surface of the drying chamber 41; an intermediate guide mechanism is provided inside the drying chamber 41; the intermediate guide mechanism includes an intermediate guide roller seat 44, an intermediate guide roller 45, and a horizontal adjustment component for driving the intermediate guide roller seat 44 to move horizontally; the rotation center axes of the intermediate guide roller 45 and the impression cylinder 34 are on the same horizontal plane.

[0053] refer to Figure 2 and Figure 7 The intermediate guide roller seat 44 is shaped like a "U" with a horizontal opening facing the impression cylinder 34; the intermediate guide roller 45 is rotatably connected between a pair of transverse portions of the intermediate guide roller seat 44; horizontal adjustment drive plates 441 are respectively formed on the mutually distant end faces of the pair of transverse portions of the intermediate guide roller seat 44; horizontal adjustment moving grooves 411 that cooperate with the horizontal adjustment drive plates 441 are respectively formed on a pair of vertical side walls of the drying chamber 41; the horizontal adjustment assembly includes a pair of horizontal adjustment motors 42 and a pair of horizontal adjustment screws 43; the horizontal adjustment motors 42 are servo motors; the horizontal adjustment screws 43 correspond one-to-one with the horizontal adjustment moving grooves 411. Furthermore, the horizontal adjusting screw 43 is rotatably connected between a pair of vertical sidewalls of the corresponding horizontal adjusting moving groove 411; a pair of horizontal adjusting motors 42 are fixed on the end face of the drying box 41 away from the impression cylinder 34; the horizontal adjusting screw 43 and the horizontal adjusting motor 42 correspond one-to-one; the horizontal adjusting screw 43 and the output shaft of the horizontal adjusting motor 42 are fixedly connected; the horizontal adjusting drive plate 441 is screwed onto the corresponding horizontal adjusting screw 43; an intermediate guide roller drive motor 46 is fixed on a transverse part of the intermediate guide roller seat 44; the rotating shaft of the intermediate guide roller 45 is coaxially fixedly connected to the output shaft of the intermediate guide roller drive motor 46.

[0054] refer to Figure 2 The paper output drying chamber 100 is opened at one end near the printing device 30; the paper output mechanism 70 includes a first paper output roller seat disposed in the paper output drying chamber 100, a first paper output roller 74 rotatably connected to the first paper output roller seat, a paper output lifting assembly for driving the first paper output roller seat to rise and fall vertically, and a second paper output roller 76 rotatably connected to the inlet and outlet cartons 10; a lower through hole 106 for decorative paper 80 to pass vertically through is formed on the lower side wall of the paper output drying chamber 100; the second paper output roller 76 is located outside the paper output drying chamber 100 and below the first paper output roller 74.

[0055] refer to Figure 2 and Figure 8The first paper output roller holder includes a pair of L-shaped first paper output roller frames 73; vertical guide grooves 101 that move vertically to the horizontal portion of the first paper output roller frames 73 are respectively formed on a pair of vertical sidewalls of the paper output drying chamber 100; the paper output lifting assembly includes a pair of paper output lifting motors 71 and a pair of paper output lifting screws 72; the paper output lifting motors 71 are servo motors; the pair of paper output lifting motors 71 are fixed on the upper end face of the inlet and outlet paper box 10; the paper output lifting screws 72 correspond one-to-one with the vertical guide grooves 101; the paper output lifting screws 72 are rotatably connected between a pair of horizontal sidewalls of the vertical guide grooves 101 on the corresponding side; the paper output lifting motors 71 and the paper output lifting screws 72 correspond one-to-one; the upper end of the paper output lifting screws 72 is coaxially and fixedly connected to the output shaft of the paper output lifting motors 71; the horizontal portion of the first paper output roller frame 73 is screwed onto the paper output lifting screws 72 on the corresponding side.

[0056] refer to Figure 2 and Figure 8 The first paper output roller 74 is rotatably connected between the vertical parts of a pair of first paper output roller frames 73; a first paper output motor 75 is fixed on the vertical part of one of the first paper output roller frames 73; the rotating shaft of the first paper output roller 74 is coaxially and fixedly connected with the output shaft of the first paper output motor 75.

[0057] To reduce heat loss in the paper drying chamber 100 and the drying box 41, refer to Figure 2 The paper drying chamber 100 has an opening at one end near the printing device 30, and an opening and closing device 50 is provided on the upper side wall of the opening; the drying box 41 has an opening at one end near the printing device 30, and opening and closing devices 50 are respectively provided on the upper and lower side walls of the opening; the opening and closing device 50 includes an L-shaped opening and closing frame 51 that is vertically movable and an opening and closing drive mechanism for driving the opening and closing frame 51 to move vertically; the vertical part of the opening and closing frame 51 is formed into a semi-cylindrical surface at the end near the decorative paper 80.

[0058] refer to Figure 2 The upper side wall of the paper output drying chamber 100 is formed with a vertical guide groove 102 with openings at the top and bottom; the two ends of the vertical guide groove 102 extend to a pair of vertical side walls of the paper output drying chamber 100 respectively; the drying box 41 is formed with a drying guide groove 410 that extends vertically through; the two ends of the drying guide groove 410 extend to a pair of vertical side walls of the drying box 41 respectively; the vertical part of the opening and closing frame 51 slides vertically in the vertical guide groove 102 or the drying guide groove 410; the opening and closing drive mechanism includes an opening and closing drive bolt 52; the opening and closing drive bolt 52 is rotatably connected to the upper end face of the paper inlet / outlet box 10, the upper end face of the drying box 41 or the lower end face of the drying box 41; the horizontal part of the opening and closing frame 51 is screwed to the opening and closing drive bolt 52 on the corresponding side.

[0059] To improve drying efficiency, refer to Figure 2A blowing device 60 is provided inside the paper drying chamber 100; a pair of blowing devices 60 are provided inside the drying box 41; the blowing device 60 includes a blowing impeller 69 and a blowing drive mechanism for rotating the blowing impeller 69; the blowing impeller 69 is perpendicular to the printing surface of the decorative paper 80.

[0060] refer to Figure 1 , Figure 2 and Figure 4 The blowing drive mechanism includes a blowing drive main shaft 62 rotatably connected between a pair of side walls of the paper drying chamber 100 or between a pair of side walls of the drying box 41, a blowing drive assembly for driving the blowing drive main shaft 62 to rotate, a blowing support plate 66 rotating around the blowing drive main shaft 62, an angle drive assembly for driving the blowing support plate 66 to rotate, and a blowing center column 67 perpendicularly inserted and rotatably connected to the blowing support plate 66; a driving bevel gear 621 is coaxially fixed on the blowing drive main shaft 62; a driven bevel gear 68 is coaxially fixed at the end of the blowing center column 67 away from the blowing impeller 69; the driving bevel gear 621 meshes with the driven bevel gear 68.

[0061] refer to Figure 1 and Figure 4 The blowing drive assembly includes a blowing drive motor 61 fixed on the vertical end face of the inlet / outlet carton 10 or the vertical end face of the drying box 41; the blowing drive motor 61 is coaxially and fixedly connected to the blowing drive main shaft 62 on the corresponding side.

[0062] refer to Figure 1 and Figure 4 The paper drying chamber 100 has fan-shaped angle drive guide grooves 600 formed on a pair of side walls; the drying box 41 has a pair of fan-shaped angle drive guide grooves 600 formed on a pair of side walls; the angle drive guide grooves 600 are coaxially arranged with the corresponding blowing drive main shaft 62; the angle drive assembly includes a pair of annular angle drive rings 65, a pair of angle drive gear rings 651, a pair of angle drive motors 63 and a pair of angle drive gears 64; the angle drive motors 63 are servo motors; the inner end face of the angle drive rings 65 has a fan-shaped angle drive block 652 coaxially arranged and cooperating with the angle drive guide grooves 600; the blowing support plate 6 6. Angle drive blocks 652 are fixed between corresponding sides; angle drive gear rings 651 correspond one-to-one with angle drive rings 65 and are formed on the outer cylindrical surface of angle drive rings 65; angle drive motors 63 are fixed on the vertical end face of the inlet / outlet carton 10, the upper end face of the drying box 41, or the lower end face of the drying box 41; angle drive gears 64 correspond one-to-one with angle drive motors 63 and are coaxially fixed on the output shaft of angle drive motors 63 on the corresponding side; angle drive gears 64 correspond one-to-one with angle drive gear rings 651 and mesh with angle drive gear rings 651 on the corresponding side.

[0063] The working principle of a printing device for water-based ink decorative paper: The decorative paper 80 first passes horizontally between a pair of upper cleaning rollers 212 and a pair of lower cleaning rollers 216 in the opposite direction of its conveying direction to clean the upper and lower surfaces of the decorative paper 80. Then it passes around the first feed roller 22 and the second feed roller 233, and then passes between the impression cylinder 34 and the lower printing plate cylinder 32 to perform the first printing on the lower surface of the decorative paper 80. Next, it passes around the intermediate guide roller 45, so that the lower surface of the decorative paper 80 faces upward, and at this time it is dried in the drying chamber 41. Then it passes between the impression cylinder 34 and the upper printing plate cylinder 35 to perform the second printing on the upper surface of the decorative paper 80. Then it enters the paper exit drying chamber 100 for drying, then passes around the first paper exit roller 74, then passes vertically through the lower perforation 106, and finally passes around the second paper exit roller 76 to leave the printing equipment horizontally.

[0064] A printing process for water-based ink decorative paper specifically includes the following steps: Step S001: Adjust the vertical position of the second feed roller 233, the vertical position of the first output roller 74, and the horizontal position of the intermediate guide roller 45 to adjust the relative position between the first printing pass and the second printing pass. Step S002: Adjust the vertical position of the three opening and closing frames 51 so that the end of the vertical part of the opening and closing frame 51 away from the horizontal part is close to the decorative paper 80. Step S003: Adjust the direction of the three blowing impellers 69 so that the axis of the blowing impellers 69 is perpendicular to the decorative paper 80 on the corresponding side; Step S004: The printing equipment is started to print.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A printing apparatus of water-based ink decorative paper, characterized by: The device includes an inlet / outlet carton (10), a printing unit (30), and a drying unit (40); the drying unit (40) includes a drying chamber (41); the printing unit (30) is located between the inlet / outlet carton (10) and the drying chamber (41); the printing unit (30) includes a printing stand (31), an upper printing plate mechanism, an impression cylinder mechanism, and a lower printing plate mechanism; the upper printing plate mechanism, the impression cylinder mechanism, and the lower printing plate mechanism are all mounted on the printing stand (31) and are distributed from top to bottom; the upper printing plate mechanism includes an upper printing plate cylinder (35), an upper printing plate cylinder drive assembly for driving the upper printing plate cylinder (35) to rotate, and an upper printing plate inking assembly located directly above the upper printing plate cylinder (35); the impression cylinder mechanism includes an impression cylinder (34) and an impression cylinder drive assembly for driving the impression cylinder (34) to rotate; the lower printing plate mechanism includes... The system includes a lower printing plate cylinder (32), a lower printing plate cylinder drive assembly for driving the lower printing plate cylinder (32) to rotate, and a lower printing plate inking assembly located directly below the lower printing plate cylinder (32); the inlet / outlet carton (10) is provided with a paper feeding mechanism (20) and a paper output mechanism (70); the inlet / outlet carton (10) is provided with a paper output drying chamber (100); the drying chamber (41) is provided with an intermediate guide mechanism; the intermediate guide mechanism includes an intermediate guide roller (45); the rotation center axes of the intermediate guide roller (45) and the impression cylinder (34) are on the same horizontal plane; the decorative paper (80) passes sequentially through the paper feeding mechanism (20), the gap between the lower printing plate cylinder (32) and the impression cylinder (34), the intermediate guide roller (45), the gap between the upper printing plate cylinder (35) and the impression cylinder (34), and the paper output mechanism (70). The upper printing plate inking assembly includes an upper printing plate ink fountain (36) and an ink outlet adjusting component (37); the upper printing plate ink fountain (36) is a cuboid with an isosceles triangular shape at the lower end and is hollow inside; the bottom of the upper printing plate ink fountain (36) is formed with a rectangular ink outlet hole (360) with openings at the top and bottom; the ink outlet adjusting component (37) includes an ink outlet adjusting block (374) that is vertically movable inside the upper printing plate ink fountain (36) and an adjusting drive component for driving the ink outlet adjusting block (374) to move vertically up and down; the ink outlet adjusting block (374) is a cuboid with an isosceles triangular shape at the lower end, and the tip of the ink outlet adjusting block (374) is directly opposite the upper opening of the ink outlet hole (360). The lower end of the upper printing plate ink fountain (36) is formed with a vertically arranged ink suction seat (361) and a first ink scraper seat (362); the ink suction seat (361) and the first ink scraper seat (362) are located on both sides of the tip of the upper printing plate ink fountain (36), with the ink suction seat (361) close to the inlet / outlet carton (10) and the first ink scraper seat (362) close to the drying box (41); the bottom of the ink suction seat (361) and the first ink scraper seat (362) are respectively formed into an arc surface that cooperates with the upper printing plate cylinder (35); an ink suction component (38) is provided on the ink suction seat (361); and an ink scraper component (39) is provided on the first ink scraper seat (362).

2. The printing apparatus of the water-based ink decorative paper according to claim 1, characterized in that: The paper feeding mechanism (20) includes a first paper feed roller (22) and a second paper feed roller assembly (23) rotatably connected to the infeed / outfeed carton (10); the second paper feed roller assembly (23) is disposed on the side of the first paper feed roller (22) near the printing device (30); the second paper feed roller assembly (23) includes a second paper feed roller seat (232), a second paper feed roller (233) rotatably connected to the second paper feed roller seat (232), and a paper feeding lifting member for driving the second paper feed roller seat (232) to move vertically up and down; the intermediate guide mechanism also includes an intermediate guide roller seat (44) and a member for driving the paper feed roller seat (44) to move vertically up and down. The intermediate guide roller seat (44) is horizontally adjustable; the intermediate guide roller (45) is rotatably connected to the intermediate guide roller seat (44); the paper output mechanism (70) includes a first paper output roller seat disposed in the paper output drying chamber (100), a first paper output roller (74) rotatably connected to the first paper output roller seat, a paper output lifting assembly for driving the first paper output roller seat to rise and fall vertically, and a second paper output roller (76) rotatably connected to the inlet and outlet cartons (10); the second paper output roller (76) is located outside the paper output drying chamber (100) and below the first paper output roller (74).

3. The printing apparatus of water-based ink decorative paper according to claim 2, characterized in that: The paper drying chamber (100) is opened at one end near the printing device (30), and an opening and closing device (50) is provided on the upper side wall of the opening; the drying box (41) is opened at one end near the printing device (30), and opening and closing devices (50) are respectively provided on the upper and lower side walls of the opening; the opening and closing device (50) includes an L-shaped opening and closing frame (51) that is vertically movable and an opening and closing drive mechanism for driving the opening and closing frame (51) to move vertically; the vertical part of the opening and closing frame (51) is formed into a semi-cylindrical surface at the end near the decorative paper (80).

4. The printing equipment for water-based ink decorative paper according to claim 2, characterized in that: A blowing device (60) is provided in the paper drying chamber (100); a pair of blowing devices (60) are provided in the drying box (41); the blowing device (60) includes a blowing impeller (69) and a blowing drive mechanism for rotating the blowing impeller (69); the blowing impeller (69) is perpendicular to the printing surface of the decorative paper (80).

5. The printing equipment for water-based ink decorative paper according to claim 4, characterized in that: The blowing drive mechanism includes a blowing drive main shaft (62) rotatably connected between a pair of side walls of the paper drying chamber (100) or between a pair of side walls of the drying box (41), a blowing drive assembly for driving the blowing drive main shaft (62) to rotate, a blowing support plate (66) rotating around the blowing drive main shaft (62), an angle drive assembly for driving the blowing support plate (66) to rotate, and a blowing center column (67) perpendicularly inserted and rotatably connected to the blowing support plate (66); a driving bevel gear (621) is coaxially fixed on the blowing drive main shaft (62); a driven bevel gear (68) is coaxially fixed at one end of the blowing center column (67) away from the blowing impeller (69); the driving bevel gear (621) meshes with the driven bevel gear (68).

6. The printing equipment for water-based ink decorative paper according to claim 1, characterized in that: The ink suction base (361) has a rectangular groove-shaped ink collection groove (3610) inside; the ink suction base (361) has a radially arranged ink inlet groove (3612) on its arc surface; the upper end of the ink inlet groove (3612) is connected to the upper end of the side wall of the ink collection groove (3610) near the ink scraper base (362); the ink suction assembly (38) is used to connect the ink collection groove (3610) and the upper printing plate ink fountain (36); the ink suction assembly (38) generates suction at the bottom opening of the ink inlet groove (3612) and draws the ink back into the upper printing plate ink fountain (36).

7. The printing equipment for water-based ink decorative paper according to claim 1, characterized in that: The bottom of the first scraper seat (362) is formed with a vertically arranged vertical moving groove (3620); the scraper assembly (39) includes a second scraper seat (394) that is vertically and elastically movable in the vertical moving groove (3620); the elasticity of the second scraper seat (394) is adjustable.

8. A printing process for water-based ink decorative paper, characterized in that: Decorative paper (80) is printed using the printing apparatus described in any one of claims 1-7.

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