Green and environment-friendly printing device and printing process for paper product production

Abstract

The green and environment-friendly printing device comprises an intaglio printing machine body, a paper inlet is formed in one side of the intaglio printing machine body, and a first limiting roller, a second limiting roller, a pressing roller, a third limiting roller, a fourth limiting roller and a fifth limiting roller are sequentially arranged in the intaglio printing machine body; a UV photolysis purification mechanism is arranged above the fifth limiting roller, a sixth limiting roller is arranged above the UV photolysis purification mechanism, an activated carbon adsorption device is arranged on one side of the sixth limiting roller, a paper outlet is formed in the upper end of the paper inlet, and a printing roller is arranged below the pressing roller. An ink scraping mechanism is arranged on one side of the printing cylinder, an inking cylinder is arranged below the printing cylinder, and an ink box is arranged below the inking cylinder; according to the method, less harmful gas is generated in the printing process, solid waste can be properly treated, and the pollution problem generated in the intaglio printing process is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of printing devices and printing processes, and in particular to a green and environmentally friendly printing device and printing process for producing paper products. Background Art

[0002] With the increasing global environmental awareness and the concept of sustainable development being deeply rooted in people's hearts, the printing industry is facing unprecedented pressure for green transformation. Although traditional gravure printing technology is famous for its high printing quality and wide application fields, it has the problem of volatile organic compounds (VOC) emissions during the production process. According to relevant data, in my country's screen printing, gravure printing and other printing processes, a large amount of solvent-based inks used contain 50%-60% volatile components. If the diluent required to adjust the ink viscosity is added, the total content of volatile components emitted by the ink when the printed product is dry can reach 70%-80%. These volatile organic solvents (VOC) evaporate in large quantities during printing and drying, causing significant pollution to the environment. Various solid wastes are also generated during gravure printing, such as waste ink barrels, waste printing plates, waste paper, waste plastics, etc. If these solid wastes are not handled properly, they will pollute the environment. Problems such as high energy consumption and high pollution have become bottlenecks restricting the sustainable development of the industry. In the traditional gravure printing process, the solvent content in the ink is relatively high, and a large amount of The energy used for drying not only increases the production cost, but also leads to the emission of a large amount of organic waste gas. Long-term inhalation of air containing these waste gases may lead to fibrotic lesions of lung tissue and other diseases, and cause a variety of diseases. In addition, the organic solvents in the waste gas may also have adverse effects on the beauty of natural scenery, ecological balance, etc., posing a serious threat to the environment and human health. According to statistics, a traditional gravure printing production line can emit hundreds of tons of volatile solvents into the atmosphere every year under normal use. The emission of these solvents not only wastes resources, but also aggravates environmental pollution. In addition, traditional gravure printing equipment also has singleness in function, lacks diversification and intelligence, and is difficult to meet the modern market's demand for efficient, flexible and personalized production. Therefore, the development of a green and environmentally friendly gravure printing device that can reduce VOC emissions and achieve high efficiency, energy saving and diversified functions has become a technical problem that needs to be solved urgently in the printing industry. At present, the Chinese patent with patent announcement number CN113650403B discloses a gravure printing machine, which can realize the printing of paper plates, but does not take into account the pollution of printing to the environment. Summary of the invention

[0003] In order to overcome the technical defects of the prior art, the present invention provides a green and environmentally friendly printing device and printing process for paper product production. In the printing process, green ink technology and optimized printing equipment realize comprehensive green transformation from source to terminal. Specifically, the device adopts water-based ink to reduce the emission of volatile organic compounds (VOC) from the source. At the same time, by introducing UV photolysis purification mechanism and activated carbon adsorption mechanism, volatile organic compounds (VOC) are further photolyzed and adsorbed. In addition, solid waste generated by printing can be properly handled. The present invention has developed a green and environmentally friendly gravure printing device that can reduce VOC emissions and achieve high efficiency, energy saving and diversified functions.

[0004] The technical solution adopted by the present invention is: a green and environmentally friendly printing device for paper product production, comprising a gravure printing body, a paper inlet is provided in the middle part of one side of the gravure printing body, a first limiting roller, a second limiting roller, a pressing roller, a third limiting roller, a fourth limiting roller and a fifth limiting roller are sequentially arranged inside the gravure printing body, a UV photolysis purification mechanism is arranged above the fifth limiting roller, a sixth limiting roller is arranged above the UV photolysis purification mechanism, an activated carbon adsorption device is arranged on one side of the sixth limiting roller, a paper outlet is provided on the gravure printing body at the end of the activated carbon adsorption device, a printing roller is arranged below the pressing roller, an ink scraping mechanism is arranged on one side of the printing roller, an inking roller is arranged below the printing roller, an inking power mechanism is arranged on one side of the inking roller, an ink box is arranged below the inking roller, a waste paper crushing box is arranged at the lower right corner of the gravure printing body, and a waste material classification cylinder group is arranged on one side of the gravure printing body.

[0005] Preferably, in order to enable the printed paper to be effectively limited and bundled in the gravure printing machine body, two upper and lower small rollers are arranged at the paper inlet, and the printed paper passes between the two small rollers, and in sequence from above the first limiting roller, below the second limiting roller, between the pressing roller and the printing roller, below the third limiting roller, one side of the fourth limiting roller, one side of the fifth limiting roller, between the UV photolysis purification mechanism, the sixth limiting roller, and between the activated carbon adsorption device, and then passes out from the paper outlet.

[0006] Preferably, in order to provide power to the components inside the gravure printing body and facilitate replacement of internal devices, telescopic rods are provided at both ends of the pressing roller, a telescopic rod is provided at the bottom end of the ink scraping mechanism, and a telescopic rod is provided at the bottom of the ink tank. The inking power mechanism includes the inking roller, a driven roller is provided at one end of the inking roller, a driving motor is provided at one end of the ink tank, a driving roller is provided at the output end of the driving motor, a tensioning wheel is provided between the driven roller and the driving roller, and belts are provided on the driven roller, the driving roller and the tensioning wheel. On the back of the gravure printing body, an activated carbon replacement door is provided at the activated carbon adsorption device, a printing cylinder replacement door is provided at the printing roller, and a shredded paper removal door is provided at the waste paper shredding box. A waste paper shredding entrance is provided at the waste paper shredding box on the side of the gravure printing body, and an upper and lower feeding rollers are provided at the waste paper shredding entrance. The waste material sorting cylinder group is provided with three cylinders.

[0007] Preferably, in order to photolyze the volatile organic compounds (VOCs) generated when drying the paper, the UV photolysis purification mechanism includes a photolysis purification box, holes are provided in the middle of the upper and lower surfaces of the photolysis purification box, two lamp bases are symmetrically arranged on both sides of the upper end of the photolysis purification box, UV ultraviolet lamps are arranged inside the two lamp bases, and two dryers are symmetrically arranged on both sides of the lower end of the photolysis purification box.

[0008] Preferably, in order to process the waste paper generated in the printing process, the waste paper shredding box includes a shredding box body, a collecting box is arranged on the bottom surface of the shredding box body, a hole is opened in the shredding box body directly opposite the waste material shredding entrance, two vertically distributed shredding cutter wheels are arranged inside the hole, and annular blades are arranged equidistantly on the two shredding cutter wheels, and the annular blades on the two shredding cutter wheels are staggered with each other.

[0009] Preferably, in order to once again adsorb the harmful gases remaining on the paper after photolysis, the activated carbon adsorption device includes an activated carbon upper plate and an activated carbon lower plate, and slide grooves are provided at both ends of the activated carbon upper plate and the activated carbon lower plate.

[0010] A green and environmentally friendly printing process for paper product production comprises the following steps: Step 1: Material preparation: first prepare the paper products and ink to be printed, put the ink into the ink box, and insert the printing paper; Step 2, ink transfer: the ink is transferred to the gravure plate of the printing cylinder by the inking cylinder, and the ink is filled into the pattern of the gravure plate of the printing cylinder during the rotation of the inking cylinder; Step 3, scraping ink: Use the scraping mechanism to scrape off excess ink on the gravure surface of the printing cylinder, leaving only the ink of the pattern in the gravure of the printing cylinder. The angle and pressure of the scraping mechanism need to be adjusted appropriately to ensure the scraping effect; Step 4, embossing: the pressing roller applies pressure on the printing paper to make it contact with the gravure of the printing roller, and the ink is transferred from the gravure pattern of the printing roller to the printing paper, and the printing speed and tension are controlled to ensure the speed and quality of the printed product; Step 5, drying: After printing is completed, the printed paper is dried to ensure that the ink solidifies quickly and improve the quality of the printed product.

[0011] Preferably, in step 1, in order to fundamentally reduce the emission of volatile organic compounds (VOCs), the ink is selected to be water-based ink, which uses water as a solvent, has low volatility, and can significantly reduce the emission of VOCs.

[0012] Preferably, in step 5, in order to reduce and effectively treat the volatile organic compounds (VOC) and various solid wastes generated during the printing process, the printed paper is dried by the dryer in the UV photolysis purification mechanism, and the generated volatile organic compounds (VOC) are photolyzed by the UV ultraviolet lamp. The UV photolysis purification mechanism uses a high-energy ultraviolet beam to irradiate the harmful substances in the exhaust gas, so that their chemical structure changes, thereby decomposing them into harmless or low-harm substances. Specifically, when the exhaust gas passes through the equipment, it is first irradiated by the high-energy ultraviolet rays of the ultraviolet lamp, and these ultraviolet rays can interrupt the chemical structure of the harmful substances. Chemical bonds are formed to form free radicals, which react with other molecules to produce a series of chemical reactions, eventually decomposing the harmful substances into harmless substances such as water and carbon dioxide. Subsequently, the activated carbon adsorption device is used to adsorb the residual pollutants on the surface of the paper. The adsorption properties of activated carbon can be used to adsorb harmful substances such as VOC in the exhaust gas on the surface of activated carbon, thereby achieving the purpose of purifying the exhaust gas. The activated carbon adsorption device has the advantages of low cost and simple operation, but the activated carbon needs to be replaced regularly to maintain its adsorption properties. Finally, the waste paper is shredded in a waste paper shredder, and the solid waste is classified and collected in the waste classification cylinder group.

[0013] The beneficial effects of the present invention are as follows: the present invention adopts green ink of water-based ink during the printing process, thereby reducing the emission of volatile organic compounds (VOC) from the source; at the same time, the device adds a UV photolysis purification mechanism and an activated carbon adsorption mechanism to further photolyze and adsorb volatile organic compounds (VOC). In addition, the waste paper crushing box and waste material classification cylinder group provided in the printing device can properly handle the solid waste generated by printing. In short, the green and environmentally friendly gravure printing device of the present invention not only solves the environmental problems existing in traditional gravure printing technology, but also improves the production efficiency and flexibility of the equipment, and provides strong support for the green transformation and sustainable development of the printing industry. Therefore, the invention of the device has significant technical innovation and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall internal structure of the gravure printing machine body of the present invention.

[0015] Figure 2 It is a schematic diagram of the front view of the internal structure of the gravure printing machine body of the present invention.

[0016] Figure 3 It is a schematic diagram of the internal rear view structure of the gravure printing machine body of the present invention.

[0017] Figure 4 It is a schematic diagram of the rear structure of the gravure printing machine body of the present invention.

[0018] Figure 5 It is a schematic diagram of the structure of the UV photolysis purification mechanism of the present invention.

[0019] Figure 6 It is a schematic diagram of the structure of the activated carbon adsorption device of the present invention.

[0020] Figure 7 It is a schematic diagram of the structure of the waste paper shredding box of the present invention.

[0021] Figure 8 This is a performance test diagram after the preparation of the present invention is completed.

[0022] Description of the accompanying drawings: In the figure: 1, gravure printing machine body; 2, paper inlet; 3, printing paper; 4, first limiting roller; 5, second limiting roller; 6, pressing roller; 7, printing roller; 8, ink box; 9, inking power mechanism; 901, inking roller; 902, tensioning wheel; 903, belt; 904, driven roller; 10, scraping mechanism; 11, third limiting roller; 12, fourth limiting roller; 13, fifth limiting roller; 14, UV photolysis purification mechanism; 1401, photolysis purification box; 140 2. Lamp base; 1403. UV lamp; 1404. Dryer; 15. Sixth limit roller; 16. Activated carbon adsorption device; 1601. Activated carbon upper plate; 1602. Activated carbon lower plate; 17. Paper outlet; 18. Waste paper crushing box; 1801. Crushing box; 1802. Feeding roller; 1803. Collecting box; 1804. Crushing blade wheel; 19. Waste sorting cylinder group; 20. Printing cylinder replacement door; 21. Activated carbon replacement door; 22. Paper scraps removal door; 23. Waste paper crushing entrance. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings: Example 1

[0024] like Figure 1-Figure 7 As shown, the present embodiment provides a green and environmentally friendly printing device for paper product production, including a gravure printing body 1, a paper inlet 2 is opened in the middle part of one side of the gravure printing body 1, a first limiting roller 4, a second limiting roller 5, a pressing roller 6, a third limiting roller 11, a fourth limiting roller 12 and a fifth limiting roller 13 are sequentially arranged inside the gravure printing body 1, a UV photolysis purification mechanism 14 is arranged above the fifth limiting roller 13, a sixth limiting roller 15 is arranged above the UV photolysis purification mechanism 14, and the sixth limiting roller 15 is arranged above the sixth limiting roller 15. An activated carbon adsorption device 16 is arranged on one side, a paper outlet 17 is opened on the gravure printing body 1 at the end of the activated carbon adsorption device 16, a printing roller 7 is arranged below the pressing roller 6, an ink scraping mechanism 10 is arranged on one side of the printing roller 7, an inking roller 901 is arranged below the printing roller 7, an inking power mechanism 9 is arranged on one side of the inking roller 901, an ink tank 8 is arranged below the inking roller 901, a waste paper crushing box 18 is arranged at the lower right corner of the gravure printing body 1, and a waste material sorting cylinder group 19 is arranged on one side of the outside of the gravure printing body 1.

[0025] Two upper and lower small rollers are arranged at the paper inlet 2, and the printed paper 3 passes between the two small rollers, and successively passes from above the first limiting roller 4, below the second limiting roller 5, between the pressing roller 6 and the printing roller 7, below the third limiting roller 11, one side of the fourth limiting roller 12, one side of the fifth limiting roller 13, between the UV photolysis purification mechanism 14, the sixth limiting roller 15, and between the activated carbon adsorption device 16, and then passes out from the paper outlet 17, so that the printed paper 3 can be effectively limited and bundled in the gravure printing machine body 1.

[0026] The pressing roller 6 is provided with telescopic rods at both ends, the scraping mechanism 10 is provided with a telescopic rod at the bottom, the ink box 8 is provided with a telescopic rod at the bottom, the inking power mechanism 9 includes an inking roller 901, one end of the inking roller 901 is provided with a driven roller 904, one end of the ink box is provided with a driving motor, the output end of the driving motor is provided with a driving roller, a tensioning wheel 902 is provided between the driven roller 904 and the driving roller, and a belt 903 is provided on the driven roller 904, the driving roller and the tensioning wheel 902, so that the components inside the gravure printing machine body 1 can be provided with a belt 903. The components provide power. On the back of the gravure printing machine body 1, an activated carbon replacement door 21 is provided at the activated carbon adsorption device 16, a printing cylinder replacement door 20 is provided at the printing cylinder 7, and a shredded paper removal door 22 is provided at the waste paper shredding box 18. A waste paper shredding entrance is provided at the waste paper shredding box 18 on the side of the gravure printing machine body 1, so that it is convenient to replace the internal device or take out the shredded waste paper. An upper and lower feeding rollers 1802 are provided at the waste paper shredding entrance, and three cylinders are provided at the waste classification cylinder group 19, which is convenient for classifying and collecting waste materials.

[0027] The UV photolysis purification mechanism 14 includes a photolysis purification box 1401, which has holes in the middle of the upper and lower surfaces. Two lamp bases 1402 are symmetrically arranged on both sides of the upper end of the photolysis purification box 1401, and UV ultraviolet lamps 1403 are arranged inside the two lamp bases 1402. Two dryers 1404 are symmetrically arranged on both sides of the lower end of the photolysis purification box 1401, so that volatile organic compounds (VOCs) generated when drying paper can be photolyzed.

[0028] The waste paper shredding box 18 includes a shredding box body 1801, and a collecting box 1803 is arranged on the bottom surface of the shredding box body 1801. The shredding box body 1801 is provided with a hole directly opposite the waste material shredding entrance, and two vertically distributed shredding cutter wheels 1804 are arranged inside the hole. Annular blades are evenly arranged on the two shredding cutter wheels 1804, and the annular blades on the two shredding cutter wheels 1804 are staggered with each other, so that the waste paper generated in the printing process can be processed.

[0029] The activated carbon adsorption device 16 includes an activated carbon upper plate 1601 and an activated carbon lower plate 1602. Slide grooves are arranged at both ends of the activated carbon upper plate 1601 and the activated carbon lower plate 1602, so that the harmful gas remaining on the paper after photolysis can be adsorbed again, and it is also convenient to replace the activated carbon plate after a period of time.

[0030] A green and environmentally friendly printing process for paper product production comprises the following steps: Step 1: Material preparation: First, prepare the paper products and ink to be printed, put the ink into the ink box 8, and insert the printing paper 3; Step 2, ink transfer: The ink is transferred to the gravure plate of the printing cylinder 7 through the inking cylinder 901, and the ink is filled into the pattern of the gravure plate of the printing cylinder 7 during the rotation of the inking cylinder 901; Step 3, scraping ink: Use the scraping mechanism 10 to scrape off the excess ink on the gravure surface of the printing cylinder 7, leaving only the ink of the pattern in the gravure of the printing cylinder 7. The angle and pressure of the scraping mechanism 10 need to be adjusted appropriately to ensure the scraping effect; Step 4: Pressing: The pressing roller 6 applies pressure to the printing paper 3 to make it contact with the gravure plate of the printing roller 7. The ink is transferred from the gravure plate pattern of the printing roller 7 to the printing paper 3. The printing speed and tension are controlled to ensure the speed and quality of the printed product. Step 5: Drying: After printing is completed, the printed paper 3 is dried to ensure that the ink is quickly solidified and improve the quality of the printed product.

[0031] In step 1, water-based ink is used as the ink. Water-based ink uses water as solvent, has low volatility, and can significantly reduce VOCs emissions. In gravure printing, although the application of water-based ink is relatively limited, its application scope is gradually expanding with the improvement of environmental protection requirements and technological progress. Water-based ink is particularly suitable for printed products with high environmental protection requirements, such as food packaging, pharmaceutical packaging, etc.

[0032] In step five, during the drying process, the UV ultraviolet lamp 1403 in the UV photolysis purification mechanism 14 is not turned on, and no activated carbon plate is placed in the activated carbon adsorption device 16 .

[0033] After the preparation is completed, the performance test is carried out, and the results are as follows Figure 8 shown. Example 2

[0034] like Figure 1-8As shown, this embodiment provides a green and environmentally friendly printing device and printing process for paper product production. Compared with Example 1, the difference from Example 1 is that in step one, water-based ink is selected as the ink. In step five, when drying, the UV ultraviolet lamp 1403 in the UV photolysis purification mechanism 14 is turned on. The UV photolysis purification mechanism 14 uses a high-energy ultraviolet beam to irradiate harmful substances in the exhaust gas, so that its chemical structure changes, thereby decomposing it into harmless or low-harm substances. Specifically, when the exhaust gas passes through the equipment, it is first irradiated by the high-energy ultraviolet rays of the ultraviolet lamp. These ultraviolet rays can break the chemical bonds in the harmful substances and form free radicals. These free radicals will react with other molecules to produce a series of chemical reactions, and finally decompose the harmful substances into harmless substances such as water and carbon dioxide. No activated carbon plate is placed in the activated carbon adsorption device 16.

[0035] The other steps in the preparation are the same as those in Example 1.

[0036] After the preparation is completed, the performance test is carried out, and the results are as follows Figure 8 shown. Example 3

[0037] like Figure 1-8 As shown, this embodiment provides a green and environmentally friendly printing device and printing process for paper product production. Compared with Example 1, the difference from Example 1 is that in step one, water-based ink is selected as the ink. In step five, during drying, the UV ultraviolet lamp 1403 in the UV photolysis purification mechanism 14 is turned on, and an activated carbon plate is placed in the activated carbon adsorption device 16. By utilizing the adsorption properties of activated carbon, harmful substances such as VOC in the exhaust gas can be adsorbed on the surface of the activated carbon, thereby achieving the purpose of purifying the exhaust gas. The activated carbon adsorption device 16 has the advantages of low cost and simple operation, but the activated carbon needs to be replaced regularly to maintain its adsorption properties.

[0038] The other steps in the preparation are the same as those in Example 1.

[0039] After the preparation is completed, the performance test is carried out, and the results are as follows Figure 8 shown.

[0040] Comparative Example 1 like Figure 1-8 As shown, this embodiment provides a green and environmentally friendly printing device and printing process for paper product production. Compared with Example 1, the difference from Example 1 is that in step one, the ink is selected from traditional solvent-based gravure ink, and in step five, during drying, the UV ultraviolet lamp 1403 in the UV photolysis purification mechanism 14 is not turned on, and no activated carbon plate is placed in the activated carbon adsorption device 16.

[0041] The other steps in the preparation are the same as those in Example 1.

[0042] After the preparation is completed, the performance test is carried out, and the results are as follows Figure 8 shown.

[0043] Compared with the test data of Examples 1 to 3 and Comparative Example 1, the release of volatile organic compounds (VOC) in Examples 1 to 3 is much lower than that in Comparative Example 1. After printing for the same time, the contents of main VOC indicators such as benzene, formaldehyde, toluene and xylene inside the device are tested. The VOC concentration of Example 1 is halved, the VOC concentration of Example 2 is also significantly reduced, and the VOC concentration of Example 3 is the lowest. Therefore, the use of water-based ink has obvious environmental protection effects in actual use, and the UV photolysis purification mechanism 14 and the activated carbon adsorption device 16 are used to photolyze and adsorb VOC, which can reduce the concentration of harmful volatile organic compounds (VOC) to a minimum, and the environmental protection effect is the best.

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A green and environmentally friendly printing device for paper product production, comprising a gravure printing machine body (1), characterized in that: A paper inlet (2) is provided in the middle of one side of the gravure printing machine body (1); a first limiting roller (4), a second limiting roller (5), a pressing roller (6), a third limiting roller (11), a fourth limiting roller (12) and a fifth limiting roller (13) are arranged in sequence inside the gravure printing machine body (1); a UV photolysis purification mechanism (14) is arranged above the fifth limiting roller (13); a sixth limiting roller (15) is arranged above the UV photolysis purification mechanism (14); an activated carbon adsorption device (16) is arranged on one side of the sixth limiting roller (15); and a first limiting roller (11) is provided on the second limiting roller (11) and a second limiting roller (12) is provided on the third limiting roller (13). A paper outlet (17) is provided on the gravure printing machine body (1) at the end of the mounting (16); a printing roller (7) is provided below the pressing roller (6); an ink scraping mechanism (10) is provided on one side of the printing roller (7); an inking roller (901) is provided below the printing roller (7); an inking power mechanism (9) is provided on one side of the inking roller (901); an ink box (8) is provided below the inking roller (901); a waste paper crushing box (18) is provided at the lower right corner of the interior of the gravure printing machine body (1); and a waste material classification cylinder group (19) is provided on one side of the exterior of the gravure printing machine body (1).

2. The green environmentally friendly printing device for paper product production according to claim 1, characterized in that: Two small rollers are arranged at the paper inlet (2), and the printed paper (3) passes between the two small rollers, and in sequence passes from above the first limiting roller (4), below the second limiting roller (5), between the pressing roller (6) and the printing roller (7), below the third limiting roller (11), one side of the fourth limiting roller (12), one side of the fifth limiting roller (13), between the UV photolysis purification mechanism (14), between the sixth limiting roller (15), and between the activated carbon adsorption device (16), and then passes out from the paper outlet (17).

3. The green environmentally friendly printing device for paper product production according to claim 1, characterized in that: Telescopic rods are provided at both ends of the pressing roller (6), a telescopic rod is provided at the bottom end of the ink scraping mechanism (10), a telescopic rod is provided at the bottom of the ink box (8), the inking power mechanism (9) comprises the inking roller (901), a driven roller (904) is provided at one end of the inking roller (901), a driving motor is provided at one end of the ink box, a driving roller is provided at the output end of the driving motor, a tensioning wheel (902) is provided between the driven roller (904) and the driving roller, and the driven roller (904) is connected to the driving roller and the tensioning wheel. A belt (903) is arranged on the wheel (902); on the back of the gravure printing machine body (1), an activated carbon replacement door (21) is arranged at the activated carbon adsorption device (16); a printing cylinder replacement door (20) is arranged at the printing cylinder (7); and a shredded paper removal door (22) is arranged at the waste paper shredding box (18); a waste paper shredding entrance is provided at the waste paper shredding box (18) on the side of the gravure printing machine body (1); two upper and lower feeding rollers (1802) are arranged at the waste paper shredding entrance; and the waste material classification cylinder group (19) is provided with three cylinders.

4. The green environmentally friendly printing device for paper product production according to claim 1, characterized in that: The UV photolysis purification mechanism (14) comprises a photolysis purification box (1401), wherein holes are provided in the middle of the upper and lower surfaces of the photolysis purification box (1401), two lamp bases (1402) are symmetrically arranged on both sides of the upper end of the photolysis purification box (1401), and UV ultraviolet lamps (1403) are arranged inside the two lamp bases (1402), and two dryers (1404) are symmetrically arranged on both sides of the lower end of the photolysis purification box (1401).

5. The green environmentally friendly printing device for paper product production according to claim 1, characterized in that: The waste paper shredding box (18) comprises a shredding box body (1801), a collecting box (1803) being arranged on the inner bottom surface of the shredding box body (1801), a hole being provided in the shredding box body (1801) directly opposite the waste material shredding entrance, two vertically distributed shredding blade wheels (1804) being arranged inside the hole, annular blades being arranged at equal distances on the two shredding blade wheels (1804), and the annular blades on the two shredding blade wheels (1804) being arranged in an interlaced manner.

6. The green environmentally friendly printing device for paper product production according to claim 1, characterized in that: The activated carbon adsorption device (16) comprises an activated carbon upper plate (1601) and an activated carbon lower plate (1602), and slide grooves are provided at both ends of the activated carbon upper plate (1601) and the activated carbon lower plate (1602).

7. A green and environmentally friendly printing process for paper product production, characterized in that: The following steps are involved: Step 1: Material preparation: First, prepare the paper products and ink to be printed, place the ink in the ink box (8), and insert the printing paper (3); Step 2: ink transfer: ink is transferred to the gravure plate of the printing roller (7) via the inking roller (901), and the ink is filled onto the pattern of the gravure plate of the printing roller (7) during the rotation of the inking roller (901); Step 3, scraping ink: using a scraping mechanism (10) to scrape off excess ink on the gravure surface of the printing roller (7), leaving only the ink of the pattern in the gravure of the printing roller (7). The angle and pressure of the scraping mechanism (10) need to be adjusted appropriately to ensure the scraping effect; Step 4: embossing: the pressing roller (6) applies pressure on the printing paper (3) so that it contacts the gravure plate of the printing roller (7), and the ink is transferred from the gravure plate pattern of the printing roller (7) to the printing paper (3), and the printing speed and tension are controlled to ensure the speed and quality of the printed product; Step 5: Drying: After printing is completed, the printed paper (3) is dried to ensure that the ink solidifies quickly and improve the quality of the printed product.

8. The green environmentally friendly printing process for paper product production according to claim 7, characterized in that: In step 1, the ink is water-based ink.

9. The green environmentally friendly printing process for paper product production according to claim 7, characterized in that: In step five, the printed paper (3) is dried using the dryer (1404) in the UV photolysis purification mechanism (14), the generated volatile organic compounds (VOCs) are photolyzed using the UV ultraviolet lamp (1403), and then the residual pollutants on the surface of the paper are adsorbed using the activated carbon adsorption device (16). Finally, the waste paper is shredded using the waste paper shredding box (18), and the solid waste is classified and collected in the waste classification cylinder group (19).

Images