Packaging paper printing process and printing equipment

Abstract

The invention discloses a packaging paper printing process and printing equipment, and relates to the technical field of printing, the packaging paper printing equipment comprises a printing rack, a feeding roller, a receiving roller and a plurality of bearing rollers are arranged on the printing rack, a printing bin and a drying bin are arranged on the printing rack, and a plurality of first heating pipes are fixed to the inner wall of the drying bin; a plurality of air supply assemblies are arranged at the inner top of the drying bin, a plurality of middle frames are fixed to the inner wall of the drying bin, air blowing covers are arranged on the two sides of each middle frame, a plurality of inclined air blowing pipes are arranged on the lower end face of each air blowing cover in a communicating mode, and every two adjacent air blowing covers are symmetrically arranged relative to the center of the corresponding middle frame. A hot air assembly matched with the blowing cover for use is arranged on the printing rack; when printing processing is carried out on the packaging paper body, the problems that printing ink is poor in drying, imprint is not dry, and hands are stuck can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of printing, and in particular to a packaging paper printing process and printing equipment. Background Art

[0002] Wrapping paper printing is an important application field of printing technology. It mainly refers to transferring printing elements such as text, patterns, colors, etc. to various packaging materials through printing equipment to form packaging products with specific functions and appearance effects. By printing wrapping paper, a layer of protection can be provided for the goods to prevent them from being damaged during transportation and storage; printed wrapping paper can make goods easier to carry and stack, thereby improving transportation efficiency; exquisite printed packaging can attract consumers' attention, stimulate purchasing desire, and thus promote sales of goods.

[0003] Existing printing equipment has certain defects when printing on packaging paper. For example, after the existing printing equipment transfers the ink to the surface of the packaging paper, the ink drying effect printed on the surface of the packaging paper is poor. Poor ink drying can easily lead to problems such as wet prints and sticky hands, which will affect the quality of the printed products and subsequent processing. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art:

[0005] Existing printing equipment has a poor drying effect on the ink printed on the surface of packaging paper.

[0006] A packaging paper printing process and printing equipment are proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A packaging paper printing device comprises a printing frame, on which a feeding roller, a receiving roller and a plurality of receiving rollers are arranged, a printing chamber and a drying chamber are arranged on the printing frame, a plurality of heating tubes are fixed on the inner wall of the drying chamber, a plurality of air supply components are arranged on the inner top of the drying chamber, a plurality of intermediate frames are fixed on the inner wall of the drying chamber, a blowing hood is arranged on both sides of each intermediate frame, a plurality of inclined blowing pipes are connected to the lower end surface of each blowing hood, two adjacent blowing hoods are symmetrically arranged about the center of the corresponding intermediate frame, and a hot air component used in conjunction with the blowing hood is arranged on the printing frame.

[0009] As a further technical solution of the present invention, each of the air supply components includes a rotating shaft rotatably arranged at the top of the drying bin, a fan blade group is fixed to the outer surface of the lower end of each rotating shaft, and a chain group transmission box is provided on the upper end surface of the drying bin for rotating with multiple rotating shafts.

[0010] As a further technical solution of the present invention, the hot air assembly includes air supply pipes fixed on both sides of the printing machine frame, a ventilation hose is arranged between the air inlet end of each blow hood and the corresponding air supply pipe, and installation grooves for matching with the ventilation hose are provided on both sides of the drying chamber. Multiple heating tubes are fixed on the inner wall of each air supply pipe, and the two air supply pipes are connected to an external air supply pump.

[0011] As a further technical solution of the present invention, ventilation slots are provided on both sides of the drying bin for use with corresponding inclined blowing pipes.

[0012] As a further technical solution of the present invention, limiting slide grooves are provided on both sides of each of the intermediate frames, a limiting slider is slidably arranged in each limiting slide groove, the limiting slider is fixedly connected to the side wall of the corresponding blow hood, and a translation component is provided on the drying chamber for use with the blow hood.

[0013] As a further technical solution of the present invention, the translation assembly includes a plurality of screw rods rotatably arranged on the inner wall of the drying bin, an L-shaped connecting block is fixed to the upper end faces of two adjacent blow hoods, each screw rod is threaded through the corresponding two L-shaped connecting blocks, and a chain group transmission box 2 is arranged on the outside of the drying bin for cooperating with the rotation of the plurality of screw rods.

[0014] As a further technical solution of the present invention, a plurality of elastic airbags are symmetrically fixed on the inner wall of the drying bin, a plurality of ventilation grooves 2 are provided on both sides of the drying bin, a plurality of one-way exhaust valves are connected to one side of each elastic airbag close to the ventilation groove 2, a plurality of one-way air intake valves are connected to the lower end surface of each elastic airbag, and a plurality of reciprocating extrusion components for use with the corresponding elastic airbags are provided in the drying bin.

[0015] As a further technical solution of the present invention, each of the reciprocating extrusion components includes a rotating shaft 2 rotatably arranged at the top of the drying bin, a cam is fixedly sleeved on the outer surface of the lower end of each rotating shaft 2, a contact plate is fixed on the side of each elastic airbag close to the cam, two guide columns are symmetrically fixed on one side of the contact plate, one end of each guide column is movably inserted into the side wall of the drying bin, two springs are fixed between each contact plate and the inner wall of the drying bin, each spring is movably sleeved on the outer surface of the corresponding guide column, and a linkage unit is arranged between each rotating shaft 2 and the adjacent rotating shaft 1.

[0016] As a further technical solution of the present invention, each of the linkage units includes a large sprocket and a small sprocket, the small sprocket is fixedly sleeved on the outer surface of rotating shaft one, the large sprocket is fixedly sleeved on the outer surface of rotating shaft two, and a chain body is sleeved between the small sprocket and the large sprocket.

[0017] A packaging paper printing process, the specific operation steps are:

[0018] Step 1: The packaging paper body to be printed is released by the feeding roller, passes through the printing chamber to complete the pattern printing, and then enters the drying chamber. Under the action of the air supply component, the hot air in the drying chamber is continuously transported to the surface of the packaging paper body that has just been printed, so as to dry the printing ink on the surface of the packaging paper body. In this process, the hot air component introduces hot air into the blowing hood, and then guides the hot air to the surface of the packaging paper body through the inclined blowing pipe, so as to further dry the printing ink on the surface of the packaging paper body.

[0019] Step 2: After the airflow is guided by the inclined blowing pipe and acts on the surface of the packaging paper body, it moves toward the ventilation slot 1, so that part of the water vapor generated by the printing ink on the surface of the drying packaging paper body is discharged to the outside of the drying chamber through the ventilation slot 1 under the drive of the airflow;

[0020] In step three, the reciprocating extrusion assembly continuously squeezes the corresponding elastic airbag, causing the elastic airbag to inhale air through multiple one-way air inlet valves, and then discharge the airflow to the ventilation slot 2 through multiple one-way exhaust valves. During this process, water vapor enters the elastic airbag along with the airflow, and then is discharged from the elastic airbag through the ventilation slot 2 to the outside of the drying chamber.

[0021] Beneficial effects of the present invention:

[0022] 1. When in use, the packaging paper body to be printed is released by the feeding roller, passes through the printing chamber to complete the pattern printing, and then enters the drying chamber. The drying chamber maintains a certain temperature under the action of multiple heating tubes (the temperature is within a reasonable range and will not cause deformation of the packaging paper body). Then, under the action of the air supply component, the hot air in the drying chamber is continuously transported to the surface of the packaging paper body that has just been printed, so as to dry the printing ink on the surface of the packaging paper body. In this process, the hot air component introduces hot air into the blowing hood, and then further guides the hot air to the surface of the packaging paper body through the inclined blowing pipe, so as to further dry the printing ink on the surface of the packaging paper body, so as to avoid poor drying of the ink, and the problems of not drying the print and sticking to the hands.

[0023] 2. Since the inclined blowing pipes on the blowing hood are all inclined, when the airflow acts on the surface of the packaging paper body through the guidance of the inclined blowing pipe, it will move toward the direction of the ventilation slot 1, so that part of the water vapor generated by the printing ink on the surface of the drying packaging paper body will be discharged to the outside of the drying chamber through the ventilation slot 1 under the drive of the airflow, which is convenient to use.

[0024] 3. When in use, when the airflow guided by the inclined blowing pipe drives the water vapor generated by the drying ink to move, not all of the water vapor will be discharged outward through the ventilation slot 1. Part of the water vapor will move toward the inner top of the drying bin after leaving the airflow. During the use of the drying bin, the reciprocating extrusion component continuously squeezes the corresponding elastic airbag, causing the elastic airbag to inhale air through multiple one-way air inlet valves, and then discharge it to the ventilation slot 2 through multiple one-way exhaust valves. In this process, the water vapor follows the airflow into the elastic airbag, and then is discharged from the elastic airbag through the ventilation slot 2 to the outside of the drying bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 3 The internal structure of the drying chamber in the present invention is shown in FIG. Figure 1 ;

[0028] Figure 4 Schematic diagram of the connection between the blowing hood and the inclined blowing pipe in the present invention Figure 1 ;

[0029] Figure 5 Schematic diagram of the connection between the blowing hood and the inclined blowing pipe in the present invention Figure 2 ;

[0030] Figure 6 The internal structure of the drying chamber in the present invention is shown in FIG. Figure 2 ;

[0031] Figure 7 The internal structure of the drying chamber in the present invention is shown in FIG. Figure 3 ;

[0032] Figure 8 It is a schematic diagram of the connection between the rotating shaft 1 and the small sprocket in the present invention;

[0033] Fig. 9 It is a schematic diagram of the connection between the elastic airbag and the one-way exhaust valve in the present invention;

[0034] Fig.10 It is a schematic diagram of the connection between the elastic airbag and the one-way air inlet valve in the present invention.

[0035] In the figure: 1. printing frame; 2. feeding roller; 3. receiving roller; 4. receiving roller; 5. printing chamber; 6. drying chamber; 7. heating tube 1; 8. intermediate frame; 9. blowing hood; 10. inclined blowing tube; 11. rotating shaft 1; 12. fan blade group; 13. chain group transmission box 1; 14. air supply pipe; 15. ventilation hose; 16. ventilation slot 1; 17. limit slide; 18. limit slide; 19. screw rod; 20. L-shaped connecting block; 21. chain group transmission box 2; 22. elastic air bag; 23. ventilation slot 2; 24. one-way exhaust valve; 25. one-way intake valve; 26. rotating shaft 2; 27. cam; 28. contact plate; 29. ​​guide column; 30. spring; 31. large sprocket; 32. small sprocket; 33. chain body; 34. packaging paper body. DETAILED DESCRIPTION

[0036] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0037] Reference Figure 1-Figure 10 A packaging paper printing device comprises a printing frame 1, on which a feeding roller 2, a receiving roller 3 and a plurality of receiving rollers 4 are arranged, a printing bin 5 and a drying bin 6 are arranged on the printing frame 1, a plurality of heating tubes 7 are fixed on the inner wall of the drying bin 6, a plurality of air supply components are arranged on the inner top of the drying bin 6, a plurality of intermediate frames 8 are fixed on the inner wall of the drying bin 6, a blowing hood 9 is arranged on both sides of each intermediate frame 8, a plurality of inclined blowing pipes 10 are connected to the lower end surface of each blowing hood 9, two adjacent blowing hoods 9 are symmetrically arranged about the center of the corresponding intermediate frame 8, and a hot air component used in conjunction with the blowing hood 9 is arranged on the printing frame 1.

[0038] The feeding roller 2 is used to deliver the packaging paper body 34 to be printed, the receiving roller 3 is used to roll up the printed packaging paper body 34, and the multiple receiving rollers 4 are used to receive the packaging paper body 34 during the conveying process to prevent collapse.

[0039] The printing chamber 5 is a prior art, and is used to print a set pattern, etc. on the packaging paper body 34 .

[0040] When in use, the packaging paper body 34 to be printed is released by the feeding roller 2, passes through the printing chamber 5 to complete the pattern printing, and then enters the drying chamber 6. The drying chamber 6 maintains a certain temperature under the action of multiple heating tubes 7 (the temperature is within a reasonable range and will not cause deformation of the packaging paper body 34), and then under the action of the air supply component, the hot air in the drying chamber 6 is continuously transported to the surface of the packaging paper body 34 that has just been printed, so as to dry the printing ink on the surface of the packaging paper body 34. In this process, the hot air component introduces hot air into the blowing hood 9, and then guides the hot air to the surface of the packaging paper body 34 through the inclined blowing pipe 10, so as to further dry the printing ink on the surface of the packaging paper body 34, so as to avoid poor drying of the ink, and the occurrence of problems such as wet prints and sticky hands.

[0041] Each air supply assembly includes a rotating shaft 11 rotatably arranged at the top of the drying chamber 6, and a fan blade group 12 is fixed to the outer surface of the lower end of each rotating shaft 11. The upper end surface of the drying chamber 6 is provided with a chain group transmission box 13 used for the rotation of multiple rotating shafts 11.

[0042] The chain group transmission box 13 is a prior art and is used to realize the rotation of multiple rotating shafts 11.

[0043] When in use, under the action of the chain group transmission box 13, the multiple rotating shafts 11 are driven to rotate, thereby driving the fan blade groups 12 to rotate and blowing hot air to the surface of the packaging paper body 34.

[0044] The hot air assembly includes an air supply pipe 14 fixed on both sides of the printing machine frame 1, and a ventilation hose 15 is arranged between the air inlet end of each blow hood 9 and the corresponding air supply pipe 14. Installation grooves for matching the ventilation hose 15 are provided on both sides of the drying chamber 6. Multiple heating tubes are fixed on the inner wall of each air supply pipe 14, and the two air supply pipes 14 are connected to an external air supply pump.

[0045] When in use, the air supply pump works to generate air flow. When the air flow passes through the air supply pipe 14, multiple heating tubes heat the air flow. Then the air flow is transported to the blow hood 9 through the ventilation hose 15, and finally blown to the surface of the packaging paper body 34 through multiple inclined blow pipes 10 on the blow hood 9.

[0046] A ventilation slot 16 is provided on both sides of the drying chamber 6 for use with the corresponding inclined blowing pipe 10.

[0047] Since the inclined blowing pipes 10 on the blowing hood 9 are all inclined, when the airflow passes through the inclined blowing pipe 10 and acts on the surface of the packaging paper body 34, it will move toward the ventilation groove 16, so that part of the water vapor generated by the printing ink on the surface of the drying packaging paper body 34 is discharged to the outside of the drying chamber 6 through the ventilation groove 16 under the drive of the airflow, which is convenient to use.

[0048] Limiting grooves 17 are provided on both sides of each intermediate frame 8, and a limiting slider 18 is slidably arranged in each limiting groove 17. The limiting slider 18 is fixedly connected to the side wall of the corresponding blowing hood 9, and a translation component for use with the blowing hood 9 is provided on the drying chamber 6.

[0049] By means of the provided translation assembly, the blowing covers 9 on both sides of the same intermediate frame 8 are urged to move away from or approach each other, so as to be used in conjunction with packaging paper bodies 34 of different specifications and sizes.

[0050] The translation assembly includes a plurality of screw rods 19 rotatably arranged on the inner wall of the drying bin 6, an L-shaped connecting block 20 is fixed to the upper end faces of two adjacent blowing hoods 9, each screw rod 19 is threadedly passed through the corresponding two L-shaped connecting blocks 20, and a chain group transmission box 21 is arranged on the outer side of the drying bin 6 for cooperating with the rotation of the plurality of screw rods 19.

[0051] The second chain group transmission box 21 is a prior art and is used to realize the rotation of multiple screw rods 19.

[0052] When the lateral position of the blowing hood 9 needs to be adjusted, the chain group transmission box 21 drives the multiple screw rods 19 to rotate, and the screw rods 19 rotate to cause two adjacent L-shaped connecting blocks 20 to move closer to or away from each other, thereby driving the corresponding blowing hood 9 to move.

[0053] A plurality of elastic airbags 22 are symmetrically fixed on the inner wall of the drying bin 6, a plurality of ventilation grooves 23 are provided on both sides of the drying bin 6, a plurality of one-way exhaust valves 24 are connected to one side of each elastic airbag 22 close to the ventilation groove 23, a plurality of one-way air intake valves 25 are connected to the lower end surface of each elastic airbag 22, and a plurality of reciprocating extrusion components for use with the corresponding elastic airbags 22 are provided in the drying bin 6.

[0054] When in use, when the airflow guided by the inclined blowing pipe 10 drives the water vapor generated by the drying ink to move, not all of the water vapor will be discharged outward through the ventilation groove 16. After part of the water vapor is separated from the guidance of the airflow, it will move toward the inner top of the drying bin 6. During the use of the drying bin 6, the reciprocating extrusion component continuously squeezes the corresponding elastic airbag 22, causing the elastic airbag 22 to inhale through multiple one-way air inlet valves 25, and then discharge it to the ventilation groove 2 23 through multiple one-way exhaust valves 24. During this process, the water vapor follows the airflow into the elastic airbag 22, and then is discharged from the elastic airbag 22 through the ventilation groove 23 to the outside of the drying bin 6.

[0055] Each reciprocating extrusion assembly includes a rotating shaft 26 rotatably arranged at the top of the drying bin 6, a cam 27 is fixedly sleeved on the outer surface of the lower end of each rotating shaft 26, a resistance plate 28 is fixed on the side of each elastic airbag 22 close to the cam 27, two guide columns 29 are symmetrically fixed on one side of the resistance plate 28, one end of each guide column 29 is movably penetrated into the side wall of the drying bin 6, two springs 30 are fixed between each resistance plate 28 and the inner wall of the drying bin 6, each spring 30 is movably sleeved on the outer surface of the corresponding guide column 29, and a linkage unit is arranged between each rotating shaft 26 and the adjacent rotating shaft 1 11.

[0056] When in use, the rotating shaft 11 drives the corresponding rotating shaft 26 to rotate under the action of the linkage unit. During the rotation of the rotating shaft 26, the corresponding cam 27 is driven to rotate. During the rotation of the cam 27, it will squeeze the contact plate 28. During the movement of the contact plate 28, it will squeeze the spring 30 and the elastic airbag 22. When the cam 27 does not squeeze the contact plate 28, the spring 30 will cause the contact plate 28 to return to its original position.

[0057] Each linkage unit includes a large sprocket 31 and a small sprocket 32. The small sprocket 32 ​​is fixedly sleeved on the outer surface of the rotating shaft 11, and the large sprocket 31 is fixedly sleeved on the outer surface of the rotating shaft 26. A chain body 33 is sleeved between the small sprocket 32 ​​and the large sprocket 31.

[0058] During the rotation of the rotating shaft 11 , the small sprocket 32 ​​is driven to rotate, thereby driving the corresponding large sprocket 31 and the rotating shaft 2 26 to rotate through the chain body 33 .

[0059] A packaging paper printing process, the specific operation steps are:

[0060] Step 1: The packaging paper body 34 to be printed is released by the feeding roller 2, passes through the printing chamber 5 to complete the pattern printing, and then enters the drying chamber 6. Under the action of the air supply component, the hot air in the drying chamber 6 is continuously transported to the surface of the packaging paper body 34 that has just been printed, so as to dry the printing ink on the surface of the packaging paper body 34. In this process, the hot air component introduces hot air into the blowing hood 9, and then guides the hot air to the surface of the packaging paper body 34 through the inclined blowing pipe 10, so as to further dry the printing ink on the surface of the packaging paper body 34.

[0061] Step 2: After the airflow is guided by the inclined blowing pipe 10 and acts on the surface of the packaging paper body 34, it moves toward the ventilation slot 16, so that part of the water vapor generated by the printing ink on the surface of the drying packaging paper body 34 is discharged to the outside of the drying chamber 6 through the ventilation slot 16 under the drive of the airflow;

[0062] In step three, the reciprocating extrusion assembly continuously squeezes the corresponding elastic airbag 22, causing the elastic airbag 22 to inhale air through multiple one-way air inlet valves 25, and then discharge the air to the ventilation groove 23 through multiple one-way exhaust valves 24. During this process, water vapor follows the air flow into the elastic airbag 22, and then is discharged from the elastic airbag 22 through the ventilation groove 23 to the outside of the drying chamber 6.

[0063] When the present invention is in use, the packaging paper body 34 to be printed is released by the feeding roller 2, passes through the printing chamber 5 to complete the pattern printing, and then enters the drying chamber 6. The drying chamber 6 maintains a certain temperature under the action of multiple heating tubes 7 (the temperature is within a reasonable range and will not cause deformation of the packaging paper body 34). Then, under the action of the air supply component, the hot air in the drying chamber 6 is continuously transported to the surface of the packaging paper body 34 that has just been printed, so as to dry the printing ink on the surface of the packaging paper body 34. In this process, the hot air component introduces hot air into the blowing hood 9, and then further guides the hot air to the surface of the packaging paper body 34 through the inclined blowing pipe 10, so as to further dry the printing ink on the surface of the packaging paper body 34, so as to avoid poor drying of the ink, and the problems of not drying the print and sticking to the hands.

[0064] Since the inclined blowing pipes 10 on the blowing cover 9 are all inclined, when the airflow passes through the inclined blowing pipe 10 and acts on the surface of the packaging paper body 34, it will move toward the ventilation slot 16, so that part of the water vapor generated by the printing ink on the surface of the drying packaging paper body 34 is discharged to the outside of the drying chamber 6 through the ventilation slot 16 under the drive of the airflow, which is convenient to use;

[0065] When in use, when the airflow guided by the inclined blowing pipe 10 drives the water vapor generated by the drying ink to move, not all of the water vapor will be discharged outward through the ventilation groove 16. After part of the water vapor is separated from the guidance of the airflow, it will move toward the inner top of the drying bin 6. During the use of the drying bin 6, the reciprocating extrusion component continuously squeezes the corresponding elastic airbag 22, causing the elastic airbag 22 to inhale through multiple one-way air inlet valves 25, and then discharge it to the ventilation groove 2 23 through multiple one-way exhaust valves 24. During this process, the water vapor follows the airflow into the elastic airbag 22, and then is discharged from the elastic airbag 22 through the ventilation groove 23 to the outside of the drying bin 6.

[0066] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A packaging paper printing device, comprising a printing frame (1), characterized in that: The printing machine frame (1) is provided with a feeding roller (2), a receiving roller (3) and a plurality of receiving rollers (4); the printing machine frame (1) is provided with a printing chamber (5) and a drying chamber (6); a plurality of heating tubes (7) are fixed on the inner wall of the drying chamber (6); a plurality of air supply components are arranged on the inner top of the drying chamber (6); a plurality of intermediate frames (8) are fixed on the inner wall of the drying chamber (6); a blowing hood (9) is arranged on both sides of each intermediate frame (8); a plurality of inclined blowing pipes (10) are connected to the lower end surface of each blowing hood (9); two adjacent blowing hoods (9) are symmetrically arranged about the center of the corresponding intermediate frame (8); and a hot air component used in conjunction with the blowing hood (9) is arranged on the printing machine frame (1).

2. A packaging paper printing device according to claim 1, characterized in that: Each of the air supply components comprises a rotating shaft (11) rotatably arranged at the top of the drying chamber (6), a fan blade group (12) is fixed to the outer surface of the lower end of each rotating shaft (11), and a chain group transmission box (13) for cooperating with the rotation of the plurality of rotating shafts (11) is arranged on the upper end surface of the drying chamber (6).

3. The packaging paper printing device according to claim 1, characterized in that: The hot air assembly comprises air supply pipes (14) fixed on both sides of the printing machine frame (1); a ventilation hose (15) is arranged between the air inlet end of each blowing hood (9) and the corresponding air supply pipe (14); installation grooves for matching the ventilation hose (15) are provided on both sides of the drying chamber (6); a plurality of heating pipes are fixed on the inner wall of each air supply pipe (14); and the two air supply pipes (14) are connected to an external air supply pump.

4. The packaging paper printing device according to claim 1, characterized in that: The drying chamber (6) is provided with a ventilation slot (16) on both sides thereof for use with a corresponding inclined blowing pipe (10).

5. The packaging paper printing device according to claim 1, characterized in that: Both sides of each intermediate frame (8) are provided with a limit slide groove (17), and a limit slider (18) is slidably arranged in each limit slide groove (17). The limit slider (18) is fixedly connected to the side wall of the corresponding blowing hood (9), and a translation component used in conjunction with the blowing hood (9) is arranged on the drying chamber (6).

6. A packaging paper printing device according to claim 5, characterized in that: The translation assembly comprises a plurality of screw rods (19) rotatably arranged on the inner wall of the drying bin (6); an L-shaped connecting block (20) is fixed to the upper end surfaces of two adjacent blowing hoods (9); each screw rod (19) is threadedly passed through the corresponding two L-shaped connecting blocks (20); and a chain group transmission box (21) for cooperating with the plurality of screw rods (19) for rotation is arranged on the outer side of the drying bin (6).

7. The packaging paper printing device according to claim 2, characterized in that: A plurality of elastic air bags (22) are symmetrically fixed on the inner wall of the drying chamber (6), a plurality of ventilation slots (23) are provided on both sides of the drying chamber (6), a plurality of one-way exhaust valves (24) are provided on the side of each elastic air bag (22) close to the ventilation slot (23), a plurality of one-way air intake valves (25) are provided on the lower end surface of each elastic air bag (22), and a plurality of reciprocating extrusion components used in conjunction with the corresponding elastic air bags (22) are provided in the drying chamber (6).

8. The packaging paper printing device according to claim 7, characterized in that: Each of the reciprocating extrusion components comprises a rotating shaft (26) rotatably arranged at the top of the drying bin (6); a cam (27) is fixedly sleeved on the outer surface of the lower end of each rotating shaft (26); a contact plate (28) is fixedly arranged on the side of each elastic airbag (22) close to the cam (27); two guide columns (29) are symmetrically fixedly arranged on one side of the contact plate (28); one end of each guide column (29) is movably penetrated into the side wall of the drying bin (6); two springs (30) are fixedly arranged between each contact plate (28) and the inner wall of the drying bin (6); each spring (30) is movably sleeved on the outer surface of the corresponding guide column (29); and a linkage unit is arranged between each rotating shaft (26) and the adjacent rotating shaft (11).

9. The packaging paper printing device according to claim 8, characterized in that: Each linkage unit comprises a large sprocket (31) and a small sprocket (32); the small sprocket (32) is fixedly sleeved on the outer surface of the first rotating shaft (11); the large sprocket (31) is fixedly sleeved on the outer surface of the second rotating shaft (26); a chain body (33) is sleeved between the small sprocket (32) and the large sprocket (31).

10. A packaging paper printing process, characterized in that: The specific steps are as follows: Step 1: The packaging paper body (34) to be printed is released by a feeding roller (2), passes through a printing chamber (5) to complete pattern printing, and then enters a drying chamber (6). Under the action of an air supply component, hot air in the drying chamber (6) is continuously transported to the surface of the printed packaging paper body (34) to dry the printing ink on the surface of the packaging paper body (34). During this process, the hot air component introduces hot air into a blowing hood (9), and then guides the hot air to the surface of the packaging paper body (34) through an inclined blowing pipe (10), so as to further dry the printing ink on the surface of the packaging paper body (34); Step 2: After the airflow is guided by the inclined blowing pipe (10) and acts on the surface of the packaging paper body (34), it moves toward the ventilation groove (16), so that part of the water vapor generated by the printing ink on the surface of the drying packaging paper body (34) is discharged to the outside of the drying chamber (6) through the ventilation groove (16) driven by the airflow; In step three, the reciprocating extrusion assembly continuously squeezes the corresponding elastic airbag (22), causing the elastic airbag (22) to inhale air through a plurality of one-way air inlet valves (25), and then discharge the air to the ventilation slot 2 (23) through a plurality of one-way air exhaust valves (24). During this process, water vapor follows the air flow into the elastic airbag (22), and then is discharged from the elastic airbag (22) through the ventilation slot 2 (23) to the outside of the drying chamber (6).

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