A green printing device and printing process

Abstract

The present application relates to the technical field of carton printing, and discloses a green and environment-friendly printing device, which comprises a printing machine box, a printing mechanism and a feeding mechanism, the shell of the printing machine box is provided with through holes on opposite sides, so as to facilitate the passing of cartons; the printing mechanism is arranged in the printing machine box and can print two cartons at the same time; the feeding mechanism is arranged outside the printing machine box and is used for feeding the stacked cartons into the printing mechanism one by one from the through holes; the printing mechanism comprises two symmetrical printing plate rollers and at least one ink roller, the ink roller is used for adding ink to the printing plate on the printing plate roller, and each printing plate roller is provided with a row of rubber rollers two on the side away from the ink roller, and a row of rubber rollers one is arranged correspondingly, and a conveying channel for conveying cartons is formed between the rubber rollers one and two. The present application can realize automatic feeding and print cartons on two conveying lines at the same time, thereby effectively improving the work efficiency.

Description

A green and environmentally friendly printing device and printing process Technical Field

[0001] This invention relates to the field of packaging box printing technology, and in particular to a green and environmentally friendly printing device and printing process. Background Technology

[0002] Packaging boxes can ensure the safety of products during transportation and enhance the product's grade. After the packaging boxes are cut and processed, they need to be printed on the surface. The original text, pictures, photos, anti-counterfeiting materials, etc. are transferred to the surface of materials such as paper, textiles, plastics, leather, PVC, and PC through processes such as plate making, inking, and pressing. This technology is used to mass-produce the content of the original.

[0003] Currently, the green and environmentally friendly printing equipment used for packaging box printing has a low degree of automation in its automatic feeding mechanism and cannot print packaging boxes on two conveyor lines at the same time, resulting in low printing efficiency and wasted manpower and resources. Summary of the Invention

[0004] To address the technical problems mentioned in the background section, this invention provides a green and environmentally friendly printing device and printing process.

[0005] This invention is achieved using the following technical solution: a green and environmentally friendly printing device, comprising a printing press housing, a printing mechanism, and a feeding mechanism.

[0006] The printing press casing has through holes on opposite sides to allow paper boxes to pass through;

[0007] The printing mechanism is located in the printing press housing and can print on two paper boxes simultaneously;

[0008] The feeding mechanism is located on the outside of the printing machine box. The feeding mechanism is used to feed stacked cardboard boxes one by one into the printing mechanism through the through hole.

[0009] As a further improvement to the above solution, the printing mechanism includes two symmetrically arranged printing plate rollers and at least one ink roller. The ink roller is used to add ink to the printing plate on the printing plate roller. Each printing plate roller has a row of rubber rollers II installed on the side away from the ink roller. Corresponding to the rubber rollers II, a row of rubber rollers I is also provided. The rubber rollers I and II form a feeding channel for conveying paper boxes, so as to convey the printed paper boxes out of the printing machine box from the through hole on the other side.

[0010] As a further improvement to the above solution, the printing mechanism also includes a drying unit. The drying unit includes a mounting box, a drying box located at one end of the mounting box, a blower mechanism located in the mounting box, and an electric heating element located in the drying box. Part of the rubber roller is rotated and located in the mounting box, and a notch is opened on the mounting box for part of the rubber roller to extend out. The mounting box and the drying box are internally connected. Several air outlets are opened on the side of the drying box near the material conveying channel, and a one-way valve is also provided on the shell of the drying box. The one-way valve controls that gas can only flow into the drying box.

[0011] As a further improvement to the above solution, the blower mechanism includes a piston plate slidably disposed at one end of the mounting box, a connecting rack fixed on the side of the piston plate away from the drying box, and a tail plate slidably connected to the inner wall of the mounting box fixed at the other end of the connecting rack. The tail plate and the inner wall of the mounting box are connected by an elastic element. A toothed gear is installed on the central shaft of one of the rubber rollers. The toothed gear can mesh with the connecting rack, thereby driving the piston plate to reciprocate so that the gas in the drying box is ejected from the blower nozzle.

[0012] As a further improvement to the above solution, the feeding mechanism includes a placement plate fixed to the printing machine chassis, a baffle plate located above the middle of the placement plate, and a pushing unit located at the end of the placement plate. There is a gap between the bottom of the baffle plate and the placement plate, which allows only one paper box to pass through. Several paper boxes are stacked on the placement plate located between the baffle plate and the pushing unit.

[0013] Furthermore, a drive unit is provided on the placement plate to drive the bottommost paper box on the placement plate through the gap and finally through the through hole into the printing press box.

[0014] As a further improvement to the above solution, the drive unit includes a mounting plate fixed below the placement plate and several feeding rollers rotatably mounted on the mounting plate. Several holes are opened on the placement plate for the top of the feeding rollers to pass through. The drive unit also includes a power module for driving the feeding rollers to rotate. The power module includes a toothed plate horizontally mounted below the placement plate. One end of the toothed plate is fixedly connected to the pushing unit. The toothed plate is linked to the feeding rollers through a transmission module to drive the feeding rollers to rotate. The power unit also includes an electric push rod, which is fixed on the placement plate. The output end of the electric push rod is connected to the toothed plate to drive the toothed plate to reciprocate.

[0015] As a further improvement to the above solution, the transmission module includes a first transmission gear and a second transmission gear. The first transmission gear is mounted on the central shaft of the feeding roller, and the second transmission gear is rotatably connected to the mounting plate. One side of the second transmission gear meshes with the first transmission gear, and the other side of the second transmission gear can mesh with the toothed plate.

[0016] As a further improvement to the above solution, the pushing unit includes a connecting frame and a pushing plate. The connecting frame can slide upward, and the bottom of the connecting frame is connected to one end of the toothed plate. The pushing plate is set vertically and connected to the top of the connecting frame. There is a gap between the bottom of the pushing plate and the placement plate, and the gap height is not less than the thickness of a cardboard box.

[0017] As a further improvement to the above solution, a groove is provided on the side of the baffle plate near the cardboard box, and a movable plate is slidably connected to the groove along its depth direction. The movable plate and the baffle plate are connected by a guide mechanism, which includes a guide rod, a return spring, and a pull rod. The guide rod slides through the baffle plate, and a vertical plate is fixed to the other end of the guide rod. A return spring is provided on the outside of the guide rod between the vertical plate and the baffle plate. The two ends of the return spring are respectively connected to the vertical plate and the baffle plate. A rocker plate is also rotatably connected to the bottom of the baffle plate. The end of the rocker plate is used to separate the second to last cardboard box from the first to last cardboard box. A pull rod is movably connected to the middle of the rocker plate, and the other end of the pull rod is rotatably connected to the guide rod.

[0018] The end plate is also vertically fixed to the end of the placement plate. Several insertion holes are opened at different heights along the end plate. Several insertion rods corresponding to the insertion holes are connected to one side of the connecting frame. The center line of the insertion hole is inclined upward relative to the horizontal line. A movable block is also slidably set on the placement plate. When the bottom insertion rod slides, it can push the movable block to slide, thereby pushing the bottom cardboard box forward, so that the cardboard box passes through the gap between the baffle plate and the placement plate.

[0019] As a further improvement to the above solution, an air cylinder is provided on the outside of the printing press housing, and a pressure plate is installed at the end of the piston rod of the air cylinder. The pressure plate is located in the direction of travel of the toothed plate, and several air blowing nozzles are provided on the outside of the printing press housing above the plate. The air blowing nozzles and the air outlet of the air cylinder are connected by an air passage.

[0020] A printing process includes the following steps:

[0021] Step 1: Stack the cardboard boxes on the placement board, with the boxes on the two placement boards stacked in opposite directions to facilitate printing on the surface of the cardboard boxes;

[0022] Step 2: During feeding, the electric push rod drives the toothed plate to move towards the side closer to the printing press box, which in turn drives each feeding roller to rotate. At this time, the connecting frame moves accordingly, causing the push plate to push the paper box against the movable plate. The bottom paper box passes through the gap between the baffle plate and the placement plate. Driven by the rotation of the feeding roller, the paper box passes through the through hole at high speed and enters the printing press box.

[0023] Step 3: The cardboard box enters the printing press housing and enters the feeding channel. When the cardboard box passes through the printing plate roller, the corresponding pattern is printed on its surface. Then, it passes above the drying box to dry its surface. Finally, it passes above the mounting box and is conveyed out of the printing press housing by rubber roller one and rubber roller two.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] This invention proposes a green and environmentally friendly printing device, comprising a printing press housing, a printing mechanism, and a feeding mechanism. The printing press housing has through holes on opposite sides to allow cardboard boxes to pass through. The printing mechanism is located inside the printing press housing and can print on two cardboard boxes simultaneously. The feeding mechanism is located outside the printing press housing and is used to feed stacked cardboard boxes one by one into the printing mechanism through the through holes. This invention automates feeding and can simultaneously print on cardboard boxes on two conveyor lines, effectively improving work efficiency. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the overall structure of the green and environmentally friendly printing device proposed in this invention.

[0027] Figure 2 is a schematic diagram of the printing machine casing and printing mechanism proposed in this invention;

[0028] Figure 3 is a schematic diagram of the feeding mechanism proposed in this invention;

[0029] Figure 4 is an enlarged view of section A in Figure 3 of this invention;

[0030] Figure 5 is an enlarged view of section B in Figure 3 of this invention;

[0031] Figure 6 is a schematic diagram of the printing plate roller proposed in this invention;

[0032] Figure 7 is a schematic diagram of the internal structure of the mounting box and drying box proposed in this invention.

[0033] Explanation of key symbols:

[0034] In the diagram: 1. Printing machine housing; 2. Feeding mechanism; 3. Paper box; 4. Printing plate roller; 5. Ink roller; 6. Adjusting roller; 7. Mounting bracket; 8. Mounting box; 9. Glue roller one; 10. Glue roller two; 11. Adjustable collar; 12. Guide roller; 13. Support seat; 14. Feeding roller; 15. Toothed plate; 16. Connecting frame; 17. Air cylinder; 18. Pressure plate; 19. Movable plate; 20. Material stop plate; 21. Guide mechanism; 22. Fixed rod; 23. Vertical plate; 24. Push plate; 25. Guide rod; 26. Return spring; 27. Pull rod; 28. Rocker plate; 29. ​​Insertion hole; 30. End plate; 31. Insert rod; 32. Through hole; 33. Elastic element; 33. Connecting rack; 34. Gear with missing teeth; 35. Piston plate; 36. Air outlet; 37. One-way valve; 38. Drying box; 39. Movable block; 40. Mounting plate; 41. Transmission gear one; 42. Transmission gear two; 43. Groove; 44. Air nozzle; 45. Detailed Implementation

[0035] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0036] Example 1:

[0037] Referring to Figures 1-7, this invention proposes a green and environmentally friendly printing device, including a printing machine housing 1, a printing mechanism, and a feeding mechanism 2. The invention allows for the installation of an air purification mechanism within the printing machine housing 1 to purify the air, thus creating a greener and more environmentally friendly working environment.

[0038] The printing press housing 1 has through holes 32 on opposite sides to allow paper boxes 3 to pass through. To accommodate paper boxes of different sizes, the invention also includes two symmetrically arranged guide rollers 12 in the printing press housing 1. Each end of the guide roller 12 is rotatably connected to a support seat 13. The support seat 13 is slidably connected to the inner wall of the printing press housing 1, and the two guide rollers allow paper boxes to pass through. By adjusting the position of the support seat 13, the distance between the two guide rollers can be adjusted, thereby adapting to the printing of paper boxes of different sizes and providing wider adaptability.

[0039] The printing mechanism is located in the printing press housing 1, and it can print on two paper boxes 3 simultaneously. Printing on paper boxes on two conveyor lines at the same time can effectively improve printing efficiency.

[0040] The feeding mechanism 2 is located outside the printing machine housing 1. The feeding mechanism is used to feed the stacked paper boxes 3 one by one into the printing mechanism through the through hole 32. The paper boxes 3 in the two feeding mechanisms are arranged in opposite directions, which facilitates printing on the same surface of the paper boxes on the two conveyor lines and avoids printing errors.

[0041] In this design, referring to Figures 1 and 2, the printing mechanism includes an ink roller 5 and two printing plate rollers 4 symmetrically arranged on the upper and lower sides of the ink roller 5. The ink roller 5 is used to add ink to the printing plate on the printing plate roller 4. Each printing plate roller 4 has a row of rubber rollers 10 mounted on the side away from the ink roller 5, and a row of rubber rollers 9 is also provided corresponding to the rubber rollers 10. A feeding channel for the paper box 3 is formed between the rubber rollers 10 and 10, allowing the printed paper box to be conveyed out of the printing press 1 through the through-hole 2 on the other side. One ink roller can add ink to two printing plate rollers, reducing the number of ink rollers required. Both ends of the ink roller 5 are rotatably mounted on a mounting bracket 7. An adjusting roller 6 is also installed in the printing press 1. The adjusting roller 6 has a cam-shaped cross-section, so as it rotates, the pressure between the ink roller and the two printing plate rollers 4 can be adjusted, facilitating easy adjustment.

[0042] Referring to Figure 7, in this scheme, the printing mechanism also includes a drying unit. The drying unit includes a mounting box 8, a drying box 39 located at one end of the mounting box 8, a blower mechanism located in the mounting box 8, and an electric heating element located in the drying box 39. The electric heating element can be an electric heating wire. Part of the rubber roller 9 is rotatably located in the mounting box 8, and a notch (not shown) is provided on the mounting box 8 for part of the rubber roller 9 to extend out. The mounting box 8 and the drying box 39 are internally connected. Several air outlets 37 are provided on the side of the drying box 39 near the material conveying channel, and a one-way valve 38 is also provided on the housing of the drying box 39. The one-way valve 38 controls that gas can only flow into the drying box 39.

[0043] As an optional embodiment of the present invention, the blower mechanism includes a piston plate 36 slidably disposed at one end of the mounting box 8, a connecting rack 34 fixed on the side of the piston plate 36 away from the drying box 39, and a tail plate (not shown) fixed at the other end of the connecting rack 34 and slidably connected to the inner wall of the mounting box. The tail plate and the inner wall of the mounting box 8 are connected by an elastic member 33. A toothed gear 35 is mounted on the central shaft of one of the rubber rollers 9. The toothed gear 35 can mesh with the connecting rack 34, thereby driving the piston plate 36 to reciprocate so that the gas in the drying box 39 is ejected from the blower nozzle 37.

[0044] The feeding mechanism 2 includes a placement plate fixed to the printing machine housing 1, a baffle plate 20 located above the middle of the placement plate, and a pushing unit located at the end of the placement plate. There is a gap between the bottom of the baffle plate 20 and the placement plate, which allows only one paper box 3 to pass through. Several paper boxes 3 are stacked on the placement plate located between the baffle plate 20 and the pushing unit.

[0045] Furthermore, a drive unit is provided on the placement plate to drive the paper box 3 at the bottom of the placement plate to pass through the gap and finally enter the printing machine box 1 through the through hole 2.

[0046] As an optional embodiment of the present invention, the driving unit includes a mounting plate 41 fixed below the placement plate and a plurality of feeding rollers rotatably mounted on the mounting plate 41. The placement plate has a plurality of holes for the top of the feeding rollers to pass through. The driving unit also includes a power module for driving the feeding rollers to rotate. The power module includes a toothed plate 15 horizontally mounted below the placement plate. One end of the toothed plate 15 is fixedly connected to the pushing unit. The toothed plate 15 is linked with the feeding roller 14 through a transmission module to drive the feeding roller 14 to rotate. The power unit also includes an electric push rod, which is fixed on the placement plate. The output end of the electric push rod is connected to the toothed plate 15 to drive the toothed plate 15 to reciprocate.

[0047] Furthermore, referring to Figure 3, the transmission module includes a first transmission gear 42 and a second transmission gear 43. The first transmission gear 42 is mounted on the central shaft of the feeding roller 14, and the second transmission gear 43 is rotatably connected to the mounting plate 41. One side of the second transmission gear 43 meshes with the first transmission gear 42, and the other side of the second transmission gear 43 can mesh with the toothed plate 15.

[0048] The feeding unit includes a connecting frame 16 and a push plate 24. The connecting frame 16 can slide upward, and the bottom of the connecting frame 16 is connected to one end of the toothed plate 15. The push plate 24 is vertically arranged and connected to the top of the connecting frame 16. There is a gap between the bottom of the push plate 24 and the placement plate, and the gap height is not less than the thickness of a paper box 3.

[0049] A groove 44 is provided on the side of the baffle plate 20 near the cardboard box 3. A movable plate 19 is slidably connected to the groove along its depth direction. The movable plate 19 and the baffle plate 20 are connected by a guide mechanism 21. The guide mechanism includes a guide rod 25, a return spring 26, and a pull rod 27. The guide rod 25 slides through the baffle plate 20. A vertical plate 23 is fixed to the other end of the guide rod 25. A return spring 26 is provided on the outside of the guide rod 25 between the vertical plate 23 and the baffle plate 20. The two ends of the return spring 26 are respectively connected to the vertical plate 23 and the baffle plate 20. A rocker plate 28 is also rotatably connected to the bottom of the baffle plate 20. The end of the rocker plate 28 is used to separate the second to last cardboard box from the first to last cardboard box. A pull rod 27 is movably connected to the middle of the rocker plate 28. The other end of the pull rod 27 is rotatably connected to the guide rod 25.

[0050] An end plate 30 is vertically fixed to the end of the placement plate. Several insertion holes 29 are opened at different heights on the end plate 30. Several insertion rods 31 corresponding to the insertion holes 29 are connected to one side of the connecting frame 16. The center line of the insertion hole 29 is inclined upward relative to the horizontal line. A movable block 40 is also slidably arranged on the placement plate. When the bottom insertion rod 31 slides, it can push the movable block 40 to slide, thereby pushing the bottom paper box forward so that the paper box passes through the gap between the baffle plate 20 and the placement plate.

[0051] In actual operation, when the electric push rod moves the toothed plate 15, it drives the feeding roller 14 to rotate, thus facilitating the subsequent movement of the bottommost paper box. At the same time, the push plate 24 pushes the bottommost paper box to gradually squeeze the movable plate 19. At this time, the guide rod 25 moves to one side, causing the pull rod 27 to rotate, thereby driving the rocker 28 to tilt slightly upward. Due to the cooperation of the insertion rod and the insertion hole, the push plate 24 also tends to move upward. At this time, the bottommost paper box is pushed by the movable block through the gap between the baffle plate and the placement plate. Due to the action of the rocker and push plate, the pressure between the remaining paper boxes and the bottommost paper box is reduced. Therefore, the bottommost paper box can easily move towards the through hole on the printing machine box and finally move into the material conveying channel.

[0052] In this solution, to clean dust and other impurities from the outer surface of the cardboard box, a final cleaning is performed on its surface before it enters the printing press housing. In this solution, an air cylinder 17 is installed on the outside of the printing press housing 1, and a pressure plate 18 is installed at the end of the piston rod of the air cylinder 17. The pressure plate 18 is positioned in the traveling direction of the toothed plate 15, and several air nozzles 45 are installed on the outside of the printing press housing 1 above the plate. The air nozzles and the air outlets of the air cylinder 17 are connected by an air passage. Therefore, when the toothed plate 15 moves, it squeezes the pressure plate 18, pushing the piston to move. The gas in the air cylinder 17 is ejected from each air nozzle 45, effectively cleaning the surface of the cardboard box.

[0053] This solution also proposes a printing process that utilizes the aforementioned printing apparatus, and its specific operation includes the following steps:

[0054] Step 1: Stack the cardboard boxes on the placement board, with the boxes on the two placement boards stacked in opposite directions to facilitate printing on the surface of the cardboard boxes;

[0055] Step 2: During feeding, the electric push rod drives the toothed plate 15 to move towards the side closer to the printing press box, causing each feeding roller to rotate; at this time, the connecting frame 16 moves accordingly, causing the push plate 24 to push the paper box against the movable plate 19, and the bottom paper box passes through the gap between the baffle plate and the placement plate, and under the rotation drive of the feeding roller, the paper box passes through the through hole at high speed and enters the printing press box.

[0056] Step 3: The cardboard box enters the printing press housing and enters the feeding channel. When the cardboard box passes through the printing plate roller, the corresponding pattern is printed on its surface. Then, it passes above the drying box to dry its surface. Finally, it passes above the mounting box and is conveyed out of the printing press housing by rubber roller one and rubber roller two.

[0057] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A green and environmentally friendly printing device, characterized in that, The device includes a printing press housing, wherein the housing has through holes on opposite sides to allow paper boxes to pass through. A printing mechanism, located in a printing press housing, is capable of printing on two cardboard boxes simultaneously; A feeding mechanism, located outside the printing press chassis, is used to feed stacked cardboard boxes one by one into the printing press through the through-hole. The feeding mechanism includes a placement plate fixed to the printing press chassis, a baffle plate located above the center of the placement plate, and a pushing unit located at the end of the placement plate. A gap is left between the bottom of the baffle plate and the placement plate, allowing only one cardboard box to pass through at a time. Several cardboard boxes are stacked on the placement plate located between the baffle plate and the pushing unit. A driving unit is also provided on the placement plate to drive the bottommost cardboard box on the placement plate through the gap and finally through the through-hole into the printing press chassis. The driving unit includes a mounting plate fixed below the placement plate and several feeders mounted on the mounting plate. The roller has several holes on the placement plate for the top of the feeding roller to pass through. The drive unit also includes a power module for driving the feeding roller to rotate. The power module includes a toothed plate horizontally positioned below the placement plate. One end of the toothed plate is fixedly connected to the pushing unit. The toothed plate is linked to the feeding roller through a transmission module to drive the feeding roller to rotate. The power module also includes an electric push rod, which is fixed to the placement plate. The output end of the electric push rod is connected to the toothed plate to drive the toothed plate to reciprocate. The transmission module includes a first transmission gear and a second transmission gear. The first transmission gear is mounted on the central shaft of the feeding roller, and the second transmission gear is rotatably connected to the mounting plate. One side of the second transmission gear meshes with the first transmission gear. The other side of the transmission gear can mesh with the toothed plate; the pushing unit includes a connecting frame and a pushing plate. The connecting frame can slide upward, and the bottom of the connecting frame is connected to one end of the toothed plate. The pushing plate is vertically arranged and connected to the top of the connecting frame. A gap is left between the bottom of the pushing plate and the placement plate, and the gap height is not less than the thickness of a cardboard box; the baffle plate has a groove on the side near the cardboard box, and a movable plate is slidably connected to the groove along its depth direction. The movable plate and the baffle plate are connected by a guide mechanism, which includes a guide rod, a return spring, and a pull rod. The guide rod slides through the baffle plate, and a vertical plate is fixed to the other end of the guide rod. A return spring is provided on the outside of the guide rod between the vertical plate and the baffle plate. The two ends of the spring are connected to the vertical plate and the baffle plate respectively. The bottom of the baffle plate is also rotatably connected to the rocker plate. The end of the rocker plate is used to separate the second to last cardboard box from the last one. The middle of the rocker plate is movably connected to the pull rod. The other end of the pull rod is rotatably connected to the guide rod. The end of the placement plate is also vertically fixed with an end plate. Several insertion holes are opened at different heights along the end plate. Several insertion rods corresponding to the insertion holes are connected to one side of the connecting frame. The center line of the insertion hole is inclined upward relative to the horizontal line. The placement plate is also slidably provided with a movable block. When the bottommost insertion rod slides, it can push the movable block to slide, thereby pushing the bottommost cardboard box forward so that the cardboard box passes through the gap between the baffle plate and the placement plate.

2. The green and environmentally friendly printing device as described in claim 1, characterized in that, The printing mechanism includes two symmetrically arranged printing plate rollers and at least one ink roller. The ink roller is used to add ink to the printing plate on the printing plate roller. Each printing plate roller has a row of rubber rollers II installed on the side away from the ink roller. Corresponding to the rubber rollers II, a row of rubber rollers I is also provided. The rubber rollers I and II form a feeding channel for conveying paper boxes, so as to convey the printed paper boxes out of the printing machine box from the through hole on the other side.

3. The green and environmentally friendly printing device as described in claim 2, characterized in that, The printing mechanism also includes a drying unit, which includes a mounting box, a drying box located at one end of the mounting box, a blower mechanism located in the mounting box, and an electric heating element located in the drying box. Part of the rubber roller is rotatably mounted in the mounting box, and a notch is provided on the mounting box for a portion of the rubber roller to extend out. The mounting box and the drying box are internally connected. Several air vents are provided on the side of the drying box near the material conveying channel, and a one-way valve is also provided on the shell of the drying box. The one-way valve controls that gas can only flow into the drying box.

4. The green and environmentally friendly printing device as described in claim 3, characterized in that, The blower mechanism includes a piston plate slidably disposed at one end of the mounting box, a connecting rack fixed on the side of the piston plate away from the drying box, and a tail plate slidably connected to the inner wall of the mounting box fixed at the other end of the connecting rack. The tail plate and the inner wall of the mounting box are connected by an elastic element. A toothed gear is installed on the central shaft of one of the rubber rollers. The toothed gear can mesh with the connecting rack, thereby driving the piston plate to reciprocate so that the gas in the drying box is ejected from the blower nozzle.

5. The green and environmentally friendly printing device as described in claim 1, characterized in that, An air cylinder is provided on the outside of the printing press housing. A pressure plate is installed at the end of the piston rod of the air cylinder. The pressure plate is located in the direction of travel of the toothed plate. Several air blowing nozzles are provided on the outside of the printing press housing above the plate. The air blowing nozzles and the air outlet of the air cylinder are connected by an air passage.

Images