Cardboard inkjet printer for packaging box

Abstract

The invention belongs to the technical field of paperboard printing, and discloses a paperboard inkjet printer for a packaging box, which comprises a mounting seat and a feeding table fixedly arranged on the mounting seat, and further comprises a printing assembly arranged at the top of the mounting seat and a paper feeding assembly arranged on the feeding table; through the limiting unit and the paper feeding unit, self-adaptive adjustment of the paperboards with different sizes and thicknesses is achieved, accurate control over the positions of the paperboards in the inkjet printing process is guaranteed, and the limitation that the paperboards with different specifications cannot be flexibly adapted to in the prior art is effectively overcome; the adopted polishing unit remarkably improves the adhesive force of the surface of the paperboard, good combination of inkjet pigment and the paperboard is ensured, and therefore the printing quality is improved, the device ingeniously utilizes a single air pump to drive the paper feeding unit and the polishing unit at the same time through an elaborately-designed air path system, energy saving and consumption reduction are achieved, and the printing quality is improved. And the automation level of the device is also improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cardboard printing, and particularly relates to a cardboard inkjet printer for packaging boxes. Background Art

[0002] With the development of the packaging and printing industry, the types of cardboard for packaging boxes are becoming increasingly rich. The inkjet printing of cardboard is a key link. The existing cardboard inkjet printers mainly have the following problems: (1) It is often impossible to precisely control the position of the cardboard, resulting in easy deviation of the cardboard during the conveying process; (2) The surfaces of some cardboard materials are relatively smooth, and it is difficult for the inkjet pigment to adhere; (3) It can often only adapt to cardboard of specific sizes and thicknesses, and different devices or components need to be replaced for cardboard of different specifications.

[0003] Therefore, there is a need for a cardboard inkjet printer for packaging boxes that can improve the paper feeding accuracy, increase the adhesion of the cardboard surface, and adapt to cardboard of different sizes to solve these technical defects. Summary of the Invention

[0004] In view of the above situation, to overcome the defects of the prior art, the present device realizes the adaptive adjustment of cardboard of different sizes and thicknesses through the limiting unit and the paper feeding unit, and ensures the precise control of the position of the cardboard during the inkjet printing process, effectively overcoming the limitation that the prior art cannot flexibly adapt to cardboard of different specifications. In addition, the grinding unit adopted by the present invention significantly improves the adhesion of the cardboard surface, ensuring the good combination of the inkjet pigment and the cardboard, thereby improving the printing quality. The present device cleverly uses a single air pump to drive the paper feeding unit and the grinding unit simultaneously through a carefully designed air path system, not only achieving energy conservation and consumption reduction, but also improving the automation level of the device.

[0005] The technical solution adopted by the present invention is as follows: A cardboard inkjet printer for packaging boxes, comprising a mounting base, a loading table fixedly arranged on the mounting base, and a discharging box fixedly arranged on the side wall of the mounting base, and further comprising a printing assembly arranged on the top of the mounting base and a paper feeding assembly arranged on the loading table; The printing assembly includes an inkjet unit and a grinding unit. The inkjet unit is arranged on the top of the mounting base, and the grinding unit is arranged on the inkjet unit. The paper feeding assembly includes a loading unit and a limiting unit. The loading unit is arranged on the side wall of the loading table, and the limiting unit is arranged on the top of the loading table. The loading unit includes a telescopic sleeve one fixedly arranged on the loading table, an adsorption sleeve one fixedly arranged at the movable end of the telescopic sleeve one, an adsorption sleeve two slidably arranged at one end of the adsorption sleeve one, an adsorption head one fixedly arranged at the bottom of the adsorption sleeve one, and an adsorption head two fixedly arranged at the bottom of the adsorption sleeve two.

[0006] As a preferred technical solution of this solution, the spraying unit includes a chute plate fixedly arranged on the top of the mounting seat, a sliding rod slidably arranged on the chute plate, an adjustable-height slider slidably arranged on the sliding rod, and a spraying nozzle fixedly arranged at the bottom of the adjustable-height slider. The grinding unit includes a paper debris box fixedly arranged on the side wall of the spraying nozzle, a wheel cover fixedly arranged on the side wall of the spraying nozzle, an impeller rotatably arranged in the wheel cover, and a grinding wheel coaxially fixedly arranged at the bottom of the impeller. The inside of the paper debris box is communicated with the inside of the grinding wheel, and air holes are formed at the bottom of the grinding wheel.

[0007] As a preferred technical solution of this solution, the limiting unit includes a second telescopic sleeve fixedly arranged on the loading table, a loading plate fixedly arranged on the top of the second telescopic sleeve, a paper limiting plate slidably arranged on the top wall of the loading plate, a limiting frame slidably arranged on the top wall of the loading plate, a telescopic limiting plate fixedly arranged on the top wall of the paper limiting plate, and a third limiting plate slidably arranged at one end of the limiting frame.

[0008] As a preferred technical solution of this solution, an adsorption plate is fixedly arranged on the top of the mounting seat. A cavity is formed inside the adsorption plate, and air-permeable holes are formed on the surface of the adsorption plate. An air pump is fixedly arranged on the side wall of the loading table. An air pipe six is arranged between the air inlet of the air pump and the second adsorption head, and an air pipe seven is arranged between the first adsorption head and the air pipe six. An air pipe three is arranged between the air outlet of the air pump and the inside of the adsorption plate. An air pipe two is arranged between the air pipe three and the inside of the second telescopic sleeve, an air pipe one is arranged between the air pipe three and the inside of the first telescopic sleeve, an air pipe four is arranged between the air pipe three and the inside of the paper debris box, and an air pipe five is arranged between the air pipe six and the inside of the wheel cover.

[0009] As a preferred technical solution of this solution, a first two-way solenoid valve is fixedly arranged on the side wall of the loading table. The first two-way solenoid valve corresponds to the air pipe one and the air pipe two. A third one-way valve is fixedly arranged on the air pipe six, a second one-way valve is fixedly arranged on the air pipe five, a first one-way valve is fixedly arranged on the air pipe three, a filter screen is fixedly arranged at one end of the air pipe four located inside the paper debris box, a first contact switch is fixedly arranged at the movable end of the first telescopic sleeve, and the first contact switch is electrically controlled and connected to the first two-way solenoid valve. A second contact switch is fixedly arranged at the bottom of the first adsorption head, and the second contact switch is electrically controlled and connected to the air pump.

[0010] As a preferred technical solution of this solution, air outlet holes are formed on one side of the wheel cover away from the air pipe five, pressure relief holes are formed on the side wall at the bottom of the second telescopic sleeve, a first paper spatula is fixedly arranged on one side wall of the adsorption sleeve, and a second paper spatula is fixedly arranged on the side wall of the second adsorption sleeve.

[0011] After adopting the above structure, the beneficial effects of the present invention are as follows: (1) Through the coordinated action of the limiting unit and the paper feeding unit, the precise positioning and conveying of cardboard with different sizes and thicknesses are achieved, avoiding the deviation of the cardboard during the conveying process, ensuring the accuracy of inkjet printing. The setting of the grinding unit slightly grinds the surface of the cardboard before inkjet printing, effectively improving the surface roughness of the cardboard, enabling the inkjet pigment to adhere better, thus significantly enhancing the printing quality and solving the problem of inkjet printing on the smooth cardboard surface; (2) The design of the limiting unit and the paper feeding unit enables the device to adapt to cardboard with different sizes and thicknesses. Without replacing equipment or components, it can meet diverse production requirements, improving the versatility and flexibility of the equipment; (3) By cleverly using a single air pump through a carefully designed air circuit system to drive both the paper feeding unit and the grinding unit simultaneously, not only is the structure simplified, the cost reduced, but also energy conservation and consumption reduction are achieved. At the same time, the automation level of the device is improved, manual intervention is reduced, and production efficiency is increased; (4) During the paper feeding process, the paper shovel can automatically push the previously printed cardboard into the blanking box, realizing automatic blanking, improving production efficiency, and reducing manual operation. Description of the Drawings

[0012] The drawings are used to provide a further understanding of the solution, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention.

[0013] Figure 1 It is a schematic diagram of the overall structure of an inkjet printer for cardboard used in the packaging box of the present invention; Figure 2 It is a schematic diagram of the connection structure of the printing component and the paper feeding component in the present invention; Figure 3 It is a schematic diagram of the connection structure of the paper feeding unit in the present invention; Figure 4 It is a sectional view of the connection structure of the paper feeding unit in the present invention; Figure 5 It is a schematic diagram of the connection structure of the inkjet unit and the grinding unit in the present invention; Figure 6 It is a sectional view of the connection structure of the grinding unit in the present invention; Figure 7 It is Figure 6 A partial enlarged view of the structure at A in Figure 8 It is a schematic diagram of the connection structure of the limiting unit in the present invention; Figure 9 It is a schematic diagram of the connection structure of the pipeline in the present invention.

[0014] In the attached drawings: 1. mounting base; 2. printing assembly; 3. loading table; 4. paper feeding assembly; 5. spraying unit; 6. grinding unit; 7. loading unit; 8. limiting unit; 9. chute plate; 11. sliding rod; 12. adjustable height slider; 13. paper debris box; 14. wheel cover; 15. grinding wheel; 16. adsorption plate; 17. spraying nozzle; 18. filter screen; 19. impeller; 20. first telescopic sleeve; 21. first adsorption sleeve; 22. first paper spatula; 23. first adsorption head; 24. second adsorption sleeve; 25. second paper spatula; 26. second adsorption head; 27. second telescopic sleeve; 28. limiting frame; 29. paper limiting plate; 30. telescopic limiting plate; 31. loading plate; 32. third limiting plate; 33. air pump; 34. first air pipe; 35. second air pipe; 36. third air pipe; 37. fourth air pipe; 38. fifth air pipe; 39. sixth air pipe; 40. two-way one solenoid valve; 41. first one-way valve; 42. second one-way valve; 43. third one-way valve; 44. seventh air pipe; 45. blanking box; 46. first contact switch. Detailed implementation manners

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0017] Example 1, as Figures 1-9 shown, the cardboard spraying and printing machine for packaging boxes in this embodiment includes a mounting base 1, a loading table 3 fixedly arranged on the mounting base 1, and a blanking box 45 fixedly arranged on the side wall of the mounting base 1, and also includes a printing assembly 2 arranged on the top of the mounting base 1 and a paper feeding assembly 4 arranged on the loading table 3; The printing assembly 2 includes a spraying unit 5 and a grinding unit 6. The spraying unit 5 is arranged on the top of the mounting base 1, and the grinding unit 6 is arranged on the spraying unit 5. The paper feeding assembly 4 includes a loading unit 7 and a limiting unit 8. The loading unit 7 is arranged on the side wall of the loading table 3, and the limiting unit 8 is arranged on the top of the loading table 3. The loading unit 7 includes a telescopic sleeve one 20 fixedly arranged on the loading table 3, an adsorption sleeve one 21 fixedly arranged at the movable end of the telescopic sleeve one 20, an adsorption sleeve two 24 slidably arranged at one end of the adsorption sleeve one 21, an adsorption head one 23 fixedly arranged at the bottom of the adsorption sleeve one 21, and an adsorption head two 26 fixedly arranged at the bottom of the adsorption sleeve two 24.

[0018] Among them, the spraying unit 5 includes a chute plate 9 fixedly arranged on the top of the mounting base 1, a sliding rod 11 slidably arranged on the chute plate 9, an adjustable-height slider 12 slidably arranged on the sliding rod 11, and a spraying nozzle 17 fixedly arranged at the bottom of the adjustable-height slider 12. The grinding unit 6 includes a paper debris box 13 fixedly arranged on the side wall of the spraying nozzle 17, a wheel cover 14 fixedly arranged on the side wall of the spraying nozzle 17, an impeller 19 rotatably arranged in the wheel cover 14, and a grinding wheel 15 coaxially fixedly arranged at the bottom of the impeller 19. The inside of the paper debris box 13 is connected to the inside of the grinding wheel 15, and air holes are formed at the bottom of the grinding wheel 15.

[0019] Among them, the limiting unit 8 includes a telescopic sleeve two 27 fixedly arranged on the loading table 3, a loading plate 31 fixedly arranged at the top of the telescopic sleeve two 27, a paper limiting plate 29 slidably arranged on the top wall of the loading plate 31, a limiting frame 28 slidably arranged on the top wall of the loading plate 31, a telescopic limiting plate 30 fixedly arranged on the top wall of the paper limiting plate 29, and a limiting plate three 32 slidably arranged at one end of the limiting frame 28.

[0020] Among them, an adsorption plate 16 is fixedly arranged on the top of the mounting base 1. A cavity is formed inside the adsorption plate 16, and air-permeable holes are formed on the surface of the adsorption plate 16. An air pump 33 is fixedly arranged on the side wall of the loading table 3. An air pipe six 39 is arranged between the air inlet of the air pump 33 and the adsorption head two 26. An air pipe seven 44 is arranged between the adsorption head one 23 and the air pipe six 39. An air pipe three 36 is arranged between the air outlet of the air pump 33 and the inside of the adsorption plate 16. An air pipe two 35 is arranged between the air pipe three 36 and the inside of the telescopic sleeve two 27. An air pipe one 34 is arranged between the air pipe three 36 and the inside of the telescopic sleeve one 20. An air pipe four 37 is arranged between the air pipe three 36 and the inside of the paper debris box 13. An air pipe five 38 is arranged between the air pipe six 39 and the inside of the wheel cover 14.

[0021] Among them, a two-way one-way solenoid valve 40 is fixedly arranged on the side wall of the loading table 3. The two-way one-way solenoid valve 40 corresponds to the first air pipe 34 and the second air pipe 35. A check valve three 43 is fixedly arranged on the sixth air pipe 39, a check valve two 42 is fixedly arranged on the fifth air pipe 38, and a check valve one 41 is fixedly arranged on the third air pipe 36. A filter screen 18 is fixedly arranged at one end of the fourth air pipe 37 located inside the paper debris box 13. A first contact switch 46 is fixedly arranged at the movable end of the first telescopic sleeve 20. The first contact switch 46 is electrically controlled and connected to the two-way one-way solenoid valve 40. A second contact switch is fixedly arranged at the bottom of the first suction head 23. The second contact switch is electrically controlled and connected to the air pump 33.

[0022] Among them, an air outlet is provided on the side of the wheel cover 14 away from the fifth air pipe 38. A pressure relief hole is provided on the side wall at the bottom of the second telescopic sleeve 27. A first paper spatula 22 is fixedly arranged on the side wall of the first suction sleeve 21, and a second paper spatula 25 is fixedly arranged on the side wall of the second suction sleeve 24.

[0023] It should be noted that: the control air flow of the check valve one 41 can only flow from the third air pipe 36 to the air pump 33, the control air flow of the check valve two 42 can only flow to the wheel cover 14 through the check valve two 42, the control air flow of the check valve three 43 can only flow to the air pump 33 through the sixth air pipe 39, and the filter screen 18 can prevent paper debris from entering the air pump 33 through the fourth air pipe 37 and causing damage to the air pump 33.

[0024] When in use: At the beginning, the two-way one-way solenoid valve 40 controls the connection of the second air pipe 35 and blocks the first air pipe 34. Place a stack of cardboard on the feeding plate 31 so that one corner of the paper stack fits the corner formed by the side wall of the adsorption plate 16 and the inner side wall of the feeding table 3. Move the limit frame 28 so that its side wall fits the side of the paper stack, and move the paper limit plate 29 so that it fits the side of the paper stack, then the position of the paper stack can be limited. Start the air pump 33. The air pump 33 inhales air from the sixth air pipe 39 and exhales air from the third air pipe 36. The air flows into the second telescopic sleeve 27 through the second air pipe 35. The second telescopic sleeve 27 drives the feeding plate 31 to move upward, driving the paper stack upward until the first piece of cardboard in the paper stack contacts the first adsorption head 23. Negative pressure is generated in the first adsorption head 23 and the second adsorption head 26 to adsorb the first piece of cardboard. The paper stack will also trigger the second contact switch. The second contact switch controls the two-way one-way solenoid valve 40 to connect the first air pipe 34 and block the second air pipe 35. At this time, the air in the second telescopic sleeve 27 flows out through the pressure relief hole, and the position of the feeding plate 31 drops. A gap appears between the first and second pieces of paper in the paper stack, which can prevent the second piece of paper in the paper stack from being brought out together. At this time, the air flows into the first telescopic sleeve 20 through the first air pipe 34. The first telescopic sleeve 20 extends and drives the first adsorption sleeve 21 to move towards the adsorption plate 16. The first adsorption sleeve 21 drives the cardboard to move towards the adsorption plate 16 through the first adsorption head 23. After the cardboard moves above the adsorption plate 16, the first contact switch 46 at the end of the first telescopic sleeve 20 is triggered. The first contact switch 46 controls the air pump 33 to reverse. Under the action of the third one-way valve 43, the air no longer flows through the sixth air pipe 39. Therefore, the first adsorption head 23 and the second adsorption head 26 no longer adsorb the cardboard. At the same time, the air pump 33 inhales air from the adsorption plate 16 through the third air pipe 36, and the cardboard is adsorbed on the surface of the adsorption plate 16. This paper feeding process can ensure that for cardboard of different sizes and thicknesses, after being sent to the adsorption plate 16 and fixed, the position of one corner is fixed, which is convenient for subsequent printing. The air pump 33 inhales air from the first telescopic sleeve 20 through the first air pipe 34. The first telescopic sleeve 20 contracts and drives the first adsorption sleeve 21 to reset. During the reset process, since the cardboard has been adsorbed by the adsorption plate 16, the first paper shovel 22 and the second paper shovel 25 will not move the cardboard. After the reset is completed, adjust the distance between the inkjet nozzle 17 and the adsorption plate 16 through the adjustable height slider 12 to adapt to the thickness of the cardboard, and start inkjet printing on the cardboard. During this process, the air pump 33 blows air into the wheel cover 14 through the fifth air pipe 38. The air drives the impeller 19 to rotate and then flows out through the air outlet hole. The rotation of the impeller 19 drives the grinding wheel 15 to rotate, and slightly grinds the surface of the cardboard before the inkjet nozzle 17 performs inkjet printing, improving the adhesion of the cardboard surface and the printing effect. The air pump 33 extracts air from the fourth air pipe 37 through the fourth air pipe 37. Since the inside of the paper debris box 13 is connected to the inside of the grinding wheel 15, the air extraction can collect the paper debris generated by the grinding of the grinding wheel 15 to prevent it from affecting the printing quality; After printing is completed, continue to repeat the above process. During the process of feeding the next piece of cardboard, the paper shovel one 22 and the paper shovel two 25 can push the previously printed cardboard into the blanking box 45 to complete blanking; The movement of the paper limiting plate 29 drives the telescopic limiting plate 30. The telescopic limiting plate 30 can limit the movement range of the adjustable height slider 12 on the sliding rod 11. The limiting frame 28 can limit the movement range of the sliding rod 11 on the chute plate 9, which can prevent the inkjet nozzle 17 from moving outside the cardboard range.

[0025] In short, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A cardboard spraying and printing machine for packaging boxes, comprising a mounting base (1) and a loading table (3) fixedly arranged on the mounting base (1), characterized in that: It further includes a printing component (2) arranged on the mounting base (1) and a paper feeding component (4) arranged on the loading table (3); The printing component (2) includes a spraying unit (5) and a grinding unit (6). The spraying unit (5) is arranged on the top of the mounting base (1), and the grinding unit (6) is arranged on the spraying unit (5). The paper feeding component (4) includes a loading unit (7) and a limiting unit (8). The loading unit (7) is arranged on the side wall of the loading table (3), and the limiting unit (8) is arranged on the top of the loading table (3). The loading unit (7) includes a first telescopic sleeve (20) fixedly arranged on the loading table (3) and a first adsorption sleeve (21) fixedly arranged at the movable end of the first telescopic sleeve (20).

2. The cardboard inkjet printer for packaging boxes according to claim 1, wherein: The spraying unit (5) includes a chute plate (9) fixedly arranged on the top of the mounting base (1), a slide bar (11) slidably arranged on the chute plate (9), an adjustable-height slider (12) slidably arranged on the slide bar (11), and a spraying nozzle (17) fixedly arranged at the bottom of the adjustable-height slider (12).

3. The carton cardboard inkjet printer according to claim 2, characterized in that: The grinding unit (6) includes a paper debris box (13) fixedly arranged on the side wall of the spraying nozzle (17), a wheel cover (14) fixedly arranged on the side wall of the spraying nozzle (17), and a grinding wheel (15) coaxially and fixedly arranged at the bottom of an impeller (19).

4. A cardboard spray painting and printing machine for packaging boxes, characterized in that: The limiting unit (8) includes a second telescopic sleeve (27) fixedly arranged on the loading table (3) and a loading plate (31) fixedly arranged at the top of the second telescopic sleeve (27).

5. A cardboard spraying and printing machine for packaging boxes, characterized in that: An adsorption plate (16) is fixedly arranged on the top of the mounting base (1), and an air pump (33) is fixedly arranged on the side wall of the loading table (3). The air pump (33) is connected to the first adsorption sleeve (21) through a pipeline, the air pump (33) is connected to the adsorption plate (16) through a pipeline, the air pump (33) is connected to the second telescopic sleeve (27) through a pipeline, the air pump (33) is connected to the first telescopic sleeve (20) through a pipeline, the air pump (33) is connected to the paper debris box (13) through a pipeline, and the air pump (33) is connected to the wheel cover (14) through a pipeline.

6. The cardboard inkjet printer for packaging boxes according to claim 5, characterized in that: A first paper spatula (22) is fixedly arranged on the side wall of the first adsorption sleeve (21).

Images