Conveying device for printing corrugated paperboard

Abstract

The present invention relates to the technical field of carton feeding, specifically a conveying device for printing corrugated carton, comprising: a support frame, a plurality of conveying rollers are rotatably mounted on the support frame, the plurality of conveying rollers are sleeved with adjacent conveying rollers through pulleys, a docking station 1 is arranged on one side of the support frame, a printing device is arranged on the side of the support frame away from the docking station 1, a docking station 2 is arranged on one side of the printing device, and a pushing mechanism is used to intermittently convey the corrugated carton one by one, which can ensure that the carton maintains a stable arrangement and spacing during the conveying process, thereby avoiding collision or stacking between the carton and improving the accuracy and efficiency of printing. When the sliding bar slides in the groove, the position of the fixed rod is adjusted according to the width and position of the carton. The fixed rod contacts and supports the two sides of the carton to ensure that it is conveyed in the center. Under the support of the fixed rod, the carton maintains a stable position and spacing, and moves in the center under the drive of the conveying roller.

Description

Technical Field

[0001] The invention relates to the technical field of carton feeding, in particular to a conveying device for printing corrugated carton. Background Art

[0002] Corrugated Box is a three-dimensional box made of corrugated cardboard. Corrugated cardboard is a solid packaging material. The outer layer is called the face paper, the wave layer is called the core paper or corrugated paper, and the bottom layer is called the lining paper. Printing on corrugated boxes can not only provide necessary product information, but also achieve multiple goals such as brand promotion, logistics tracking, safety and compliance, anti-counterfeiting and anti-theft, improving user experience and promoting sustainable development. Therefore, corrugated box printing plays a vital role in the packaging industry.

[0003] During the printing process of corrugated cartons, due to the light weight of corrugated cartons, during the transportation process, it is easy to cause multiple corrugated cartons to be stacked and transported into the printing equipment for printing operations. The stacked corrugated cartons may cause uneven distribution of printing pressure during the printing process, thereby affecting the quality of the printed images. Since there may be gaps or misalignments between the stacked cartons, the printed images may be blurred, doubled, or missed. In addition, since corrugated cartons of different sizes have different thicknesses, lengths, and widths, when the cartons are transported, cartons of different sizes may not be able to fully utilize the space of the conveyor belt during the transportation process, resulting in space waste. This may increase the cost of the conveying system and reduce production efficiency.

[0004] Therefore, it is necessary to provide a conveying device for corrugated box printing to solve the above problems.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0006] Based on the above-mentioned problems existing in the prior art, the problem to be solved by the present application is: corrugated cardboard boxes are relatively light in weight, and during the transportation process, it is easy for multiple corrugated cardboard boxes to be stacked and transported into the printing equipment for printing operations, and cartons of different sizes may not be able to fully utilize the space of the conveyor belt during the transportation process, resulting in space waste.

[0007] The technical solution adopted by the present application to solve the technical problem is: a conveying device for printing corrugated paper boxes, comprising: a support frame, on which a plurality of conveying rollers are rotatably mounted, and the plurality of conveying rollers are sleeved with adjacent conveying rollers through pulleys, a docking station 1 is arranged on one side of the support frame, a printing device is arranged on the side of the support frame away from the docking station 1, and a docking station 2 is arranged on one side of the printing device, characterized in that: It also includes a pushing mechanism, which is arranged on the docking platform, and includes a pushing plate slidably arranged on the docking platform, a slider is fixedly arranged at the bottom of the pushing plate, and a connecting plate is fixedly connected to the bottom of the slider, and the pushing mechanism is used to intermittently transport the corrugated paper boxes one by one; It also includes a centering mechanism, which is arranged on the support frame. The centering mechanism includes fixing bars symmetrically arranged at both ends of the support frame, the fixing bars are penetrated by grooves, sliding bars are slidably arranged in the grooves, and fixing rods are equidistantly fixed on the sliding bars. The fixing rods pass through the conveying rollers. The centering mechanism is used for centering the corrugated cardboard box after the pushing mechanism pushes the corrugated cardboard box onto the conveying roller.

[0008] Preferably, the pushing mechanism also includes a limiting component and an adjusting component, and the limiting component of the pushing mechanism includes a limiting plate symmetrically arranged on the docking platform one, and the limiting plate is fixed to the docking platform one by bolts, and a movable plate is movably arranged on one side of the two limiting plates close to the conveying roller shaft.

[0009] Preferably, a through groove is formed through the docking platform 1, the inner wall of the through groove is slidably connected to the slider, and the slider passes through the through groove and extends to the bottom of the docking platform 1.

[0010] Preferably, the adjustment component of the pushing mechanism includes a driving shaft rotatably arranged at the bottom of the docking platform, the driving shaft is connected to an external drive, a crank is fixedly connected to the bottom of the driving shaft, a convex groove is provided on the side of the crank away from the driving shaft, and the convex groove is divided into two sections connected to each other, which are a square movable section and a cylindrical movable section.

[0011] Preferably, a square block is slidably arranged in the square movable section of the convex groove, and a movable block is slidably arranged in the cylindrical movable section of the convex groove. A through hole is penetrated on the movable block, and a threaded rod is threadedly connected in the through hole, and the end of the threaded rod is rotatably connected to the square block.

[0012] Preferably, the outer surface of the movable block is provided with a ring, the outer surface of the movable block slides on the inner wall of the ring, the outer surface of the ring is fixedly connected to the connecting plate, the outer surface of the connecting plate is penetrated by a support block, and the support block is fixedly set at the bottom of the docking platform.

[0013] Preferably, the centering mechanism also includes a fixed plate fixedly arranged on the support frame, a limit block is fixedly arranged on the fixed plate, the middle part of the limit block is penetrated by the connecting plate, and a guide rail is fixedly arranged in the middle part of the fixed plate.

[0014] Preferably, movable blocks are symmetrically slidably connected to the guide rails, fixed blocks are fixedly provided on the movable blocks, and the fixed blocks are fixedly connected to the bottom of the sliding bar.

[0015] Preferably, a connecting shaft 1 is fixedly provided in the middle of the movable block, and a connecting rod is rotatably provided on the outer surface of the connecting shaft 1.

[0016] Preferably, one end of the connecting rod away from the connecting shaft 1 is rotatably connected to the connecting shaft 2, and the connecting shaft 2 is fixedly arranged on the top of the connecting plate.

[0017] The beneficial effects of this application are: The present application provides a conveying device for printing corrugated paper boxes. By rotating the threaded rod, the threaded rod releases the limit of the square block. At this time, the moving block can be moved to drive the square block to slide together in the convex groove. The position of the moving block from the core of the driving shaft is adjusted according to the length of the corrugated paper box. By adjusting the position of the moving block, the pushing mechanism can adapt to corrugated paper boxes of different lengths, thereby improving its versatility and flexibility. The design of the threaded rod and the convex groove allows the operator to accurately adjust the position of the moving block, thereby ensuring the stability and accuracy of the paper box during the pushing process.

[0018] The present application provides a conveying device for printing corrugated paper boxes. After adjusting the moving block to a suitable position, the external drive of the driving shaft is started. At this time, the driving shaft drives the moving block at the bottom of the crank to start circular motion. Since the moving block slides on the inner wall of the sleeve ring, when the moving block moves in a circular motion, it can drive the connecting plate to slide back and forth on the supporting block. At the same time, the connecting plate drives the push plate through the slider to push the corrugated paper boxes one by one onto the conveying roller shaft and transport them to the printing equipment for printing. The pushing mechanism realizes the function of automatically pushing the corrugated paper boxes and transporting them to the printing equipment for printing through a series of actions such as adjusting the position of the moving block, starting the external drive, the crank drives the moving block to do circular motion, and the connecting plate drives the push plate through the slider to push the paper box. It avoids multiple corrugated paper boxes from being stacked and transported into the printing equipment for printing operations, and further avoids the problems of blurring, ghosting or missing printing of printed images.

[0019] The present application provides a conveying device for printing corrugated paper boxes, which can achieve accurate centering support for the paper boxes through the coordinated work of the connecting rod, the movable block and the sliding bar. The supporting effect of the fixed rod ensures the stability and accuracy of the paper boxes during the conveying process. The mechanism can adapt to paper boxes of different sizes and shapes, and improves the versatility and flexibility of the pushing mechanism. The entire pushing and centering process is automatically completed by the pushing mechanism and the centering mechanism without manual intervention.

[0020] In addition to the above-described purposes, features and advantages, the present application has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the overall present invention from another perspective; Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle; Figure 4 It is a structural schematic diagram of a docking station of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle; Figure 6 It is a schematic diagram of a partial explosion structure of the pushing mechanism of the present invention; Figure 7 It is a schematic diagram of the centering mechanism structure of the present invention; Figure 8 It is a schematic diagram of the overall cross-section structure of a docking station of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at C in the middle; Fig.10 It is a schematic diagram of the overall structure of the pushing mechanism and the centering mechanism of the present invention.

[0022] Description of the figure number: 1. Support frame; 2. Conveyor roller; 3. Printing equipment; 4. Docking station one; 5. Docking station two; 6. Push mechanism; 7. Limit assembly; 8. Limit plate; 9. Movable plate; 10. Push plate; 11. Slider; 12. Through slot; 13. Adjustment assembly; 14. Drive shaft; 15. Crank; 16. Convex slot; 17. Square block; 18. Moving block; 19. Through hole; 20. Threaded rod; 21. Ring; 22. Connecting plate; 23. Support block; 24. Centering mechanism; 25. Fixed plate; 26. Limit block; 27. Guide rail; 28. Movable block; 29. ​​Connecting rod; 30. Connecting shaft one; 31. Connecting shaft two; 32. Fixed block; 33. Fixed bar; 34. Groove; 35. Sliding bar; 36. Fixed rod. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0025] Reference Figures 1 to 10 A conveying device for printing corrugated paper boxes includes: a support frame 1, which serves as the basic structure of the entire conveying device and is used to support and fix other components. A plurality of conveying rollers 2 are rotatably mounted on the support frame 1, and the plurality of conveying rollers 2 are sleeved with adjacent conveying rollers 2 through pulleys. A docking station 1 4 is provided on one side of the support frame 1, a printing device 3 is provided on the side of the support frame 1 away from the docking station 1 4, and a docking station 2 5 is provided on one side of the printing device 3. The conveying rollers 2 convey the corrugated paper boxes by rotating, so that the corrugated paper boxes are moved from the docking station 1 4 to the printing device 3, and then to the docking station 2 5. The rotation of the pulley drives the rotation of the belt and the conveying rollers 2, thereby realizing continuous transportation of the corrugated paper boxes.

[0026] Please refer to Figures 1 to 10 , a conveying device for printing corrugated cardboard boxes, further comprising a pushing mechanism 6, the pushing mechanism 6 being arranged on a docking station 4, the pushing mechanism 6 comprising a push plate 10 slidably arranged on the docking station, a slider 11 being fixedly arranged at the bottom of the push plate 10, a connecting plate 22 being fixedly connected to the bottom of the slider 11, guiding the moving direction of the push plate 10 by sliding, and ensuring the stability of the push plate 10 during movement. The connecting plate 22 transmits driving force to the slider 11 and the push plate 10, thereby achieving the pushing of the cartons. The pushing mechanism 6 is used for intermittently conveying the corrugated cardboard boxes one by one, which can ensure that the cartons maintain a stable arrangement and spacing during the conveying process, thereby avoiding collision or stacking between cartons, and improving the accuracy and efficiency of printing; Please refer to Figures 1 to 10A conveying device for printing corrugated cardboard boxes also includes a centering mechanism 24, which is arranged on a support frame 1. The centering mechanism 24 includes fixed bars 33 symmetrically arranged at both ends of the support frame 1, which serve as a support structure for the centering mechanism 24 and fix and position other components. A groove 34 is provided on the fixed bar 33, and a sliding bar 35 is slidably provided in the groove 34. Fixed rods 36 are equidistantly fixed on the sliding bar 35, and the fixed rods 36 pass through the conveying roller shafts 2. The groove 34 provides a sliding track for the sliding bar 35 to ensure that the sliding bar 35 can move smoothly on the fixed bar 33. There are two sliding bars 35, and the position of the fixed rod 36 is adjusted by sliding, so as to achieve the centering adjustment of the carton. The centering mechanism 24 is used to convey the corrugated cardboard box in the center after the pushing mechanism 6 pushes the corrugated cardboard box onto the conveying roller shaft 2.

[0027] Specifically, first, the pushing mechanism 6 pushes the corrugated paper box onto the conveying roller 2. Then, the centering mechanism 24 starts to work. The sliding bar 35 slides in the groove 34 and adjusts the position of the fixing rod 36 according to the width and position of the paper box. The fixing rod 36 contacts both sides of the paper box and supports the paper box to ensure that it is conveyed in the center. With the support of the fixing rod 36, the paper box maintains a stable position and spacing, and moves forward in the center under the drive of the conveying roller 2.

[0028] Please refer to Figure 2 , Figures 4 to 6 as well as Figures 8 to 10 , wherein the pushing mechanism 6 further includes a limiting assembly 7 and an adjusting assembly 13, the limiting assembly 7 of the pushing mechanism 6 includes a limiting plate 8 symmetrically arranged on the docking platform 4, the limiting plate 8 is fixed to the docking platform 4 by bolts, and a movable plate 9 is movably arranged on one side of the two limiting plates 8 close to the conveying roller shaft 2. A through groove 12 is provided through the docking platform 4, the inner wall of the through groove 12 is slidably connected with the slider 11, and the slider 11 passes through the through groove 12 and extends to the bottom of the docking platform 4. The limiting plates 8 are symmetrically arranged on the docking platform 4 and fixed to the docking platform 4 by bolts. This design ensures the stability and reliability of the limiting plates 8. The main function of the limiting plates 8 is to limit the lateral movement of the corrugated carton during the pushing process, and ensure that the carton can be pushed to the conveying roller shaft 2 along the correct path. The movable plate 9 is arranged on one side of the two limiting plates 8 close to the conveying roller shaft 2, and is movable. This design allows the movable plate 9 to be appropriately adjusted according to the width of the carton to adapt to cartons of different sizes. The main function of the movable plate 9 is to further limit the lateral movement of the carton and ensure that the carton remains in the center position during the pushing process. By adjusting the position of the movable plate 9, it can adapt to the transportation of cartons of different sizes.

[0029] Please refer to Figure 2 , Figures 4 to 6 as well as Figures 8 to 10The adjustment component 13 of the push mechanism 6 includes a drive shaft 14 rotatably arranged at the bottom of the docking platform 4. The drive shaft 14 is externally connected to an external drive and serves as the power input shaft of the adjustment component 13. It receives the input of the external drive and converts it into rotational motion. A crank 15 is fixedly connected to the bottom of the drive shaft 14. A convex groove 16 is provided on the side of the crank 15 away from the drive shaft 14. The convex groove 16 is divided into two sections that are interconnected, which are a square movable section and a cylindrical movable section. A square block 17 is slidably arranged in the square movable section of the convex groove 16, and a moving block 18 is slidably arranged in the cylindrical movable section of the convex groove 16. A through hole 19 is penetrated on the moving block 18. A threaded rod 20 is threadedly connected in the through hole 19. The end of the threaded rod 20 is rotatably connected to the square block 17. The outer surface of the moving block 18 is sleeved with a ring 21, and the outer surface of the moving block 18 slides on the inner wall of the ring 21. The outer surface of the ring 21 is fixedly connected to the connecting plate 22. The outer surface of the connecting plate 22 is penetrated by a support block 23, and the support block 23 is fixedly set at the bottom of the docking platform 4.

[0030] By rotating the threaded rod 20, the threaded rod 20 releases the limit of the square block 17. At this time, the moving block 18 can be moved to drive the square block 17 to slide together in the convex groove 16. The position of the moving block 18 from the axis core of the drive shaft 14 is adjusted according to the length of the corrugated box. By adjusting the position of the moving block 18, the pushing mechanism 6 can adapt to corrugated boxes of different lengths, thereby improving its versatility and flexibility. The design of the threaded rod 20 and the convex groove 16 allows the operator to accurately adjust the position of the moving block 18, thereby ensuring the stability and accuracy of the carton during the pushing process. The adjustment process is relatively simple and intuitive, and the operator can easily make adjustments without complex tools or skills.

[0031] After adjusting the moving block 18 to a suitable position, the external drive of the driving shaft 14 is started. At this time, the driving shaft 14 drives the moving block 18 at the bottom of the crank 15 to start circular motion. Since the moving block 18 slides on the inner wall of the collar 21, when the moving block 18 moves in a circular motion, it can drive the connecting plate 22 to slide back and forth on the supporting block 23. At the same time, the connecting plate 22 drives the push plate 10 through the slider 11 to push the corrugated paper boxes one by one onto the conveying roller 2 and transport them to the printing device 3 for printing. The pushing mechanism 6 realizes the function of automatically pushing and transporting the corrugated paper boxes to the printing device 3 for printing through a series of actions such as adjusting the position of the moving block 18, starting the external drive, the crank 15 drives the moving block 18 to make a circular motion, and the connecting plate 22 drives the push plate 10 to push the paper boxes through the slider 11. It avoids multiple corrugated paper boxes from being stacked and transported into the printing device 3 for printing operations, and further avoids the problems of blurring, ghosting or missing printing of printed images.

[0032] Please refer to Figures 1 to 4 , Figure 7 , Figure 8 as well as Fig.10 Furthermore, the centering mechanism 24 also includes a fixed plate 25 fixedly arranged on the support frame 1, a limit block 26 fixedly arranged on the fixed plate 25, the middle of the limit block 26 is penetrated by the connecting plate 22, and a guide rail 27 is fixedly arranged in the middle of the fixed plate 25. The guide rail 27 is symmetrically slidably connected with a movable block 28, and a fixed block 32 is fixedly arranged on each movable block 28, and each fixed block 32 is fixedly connected to the bottom of the sliding bar 35. A connecting shaft 1 30 is fixedly arranged in the middle of each movable block 28, and a connecting rod 29 is rotatably arranged on the outer surface of each connecting shaft 1 30. The end of the connecting rod 29 away from the connecting shaft 1 30 is rotatably connected with a connecting shaft 2 31, and the connecting shaft 2 31 is fixedly arranged on the top of the connecting plate 22.

[0033] When the push mechanism 6 pushes the corrugated carton, the connecting plate 22 of the push mechanism 6 will drive the connecting rod 29 of the centering mechanism 24 to drive the movable block 28 to slide on the guide rail 27. When the connecting rod 29 is pushed, the movable block 28 on the guide rail 27 moves away from each other, and then the movable block 28 drives the sliding bar 35 on the fixed block 32 to slide in the groove 34 and move away from each other synchronously. When the connecting rod 29 is pulled, the movable block 28 on the guide rail 27 moves toward each other, and then the movable block 28 drives the sliding bar 35 on the fixed block 32 to slide in the groove 34 and move toward each other synchronously, so that the fixed rod 36 on the sliding bar 35 contacts the two sides of the carton and supports the carton to ensure its centering transportation. Under the support of the fixed rod 36, the carton maintains a stable position and spacing and moves forward under the drive of the conveying roller 2. Through the coordinated work of the connecting rod 29, the movable block 28 and the sliding bar 35, accurate centering support of the carton can be achieved. The support of the fixing rod 36 ensures the stability and accuracy of the cartons during transportation. This mechanism can adapt to cartons of different sizes and shapes, improving the versatility and flexibility of the pushing mechanism 6. The entire pushing and centering process is automatically completed by the pushing mechanism 6 and the centering mechanism 24 without manual intervention.

[0034] Through all the above embodiments, the working principle process of the present invention is as follows: First, the corrugated paper box is transported and placed between the limit plates 8 on the docking platform 4, and then the position of the movable plate 9 is adjusted according to the thickness of the corrugated paper box; Then, by rotating the threaded rod 20, the threaded rod 20 releases the limit of the square block 17. At this time, the moving block 18 can be moved to drive the square block 17 to slide together in the convex groove 16. The position of the moving block 18 from the axis core of the drive shaft 14 is adjusted according to the length of the corrugated box. By adjusting the position of the moving block 18, the pushing mechanism 6 can adapt to corrugated boxes of different lengths, thereby improving its versatility and flexibility. The design of the threaded rod 20 and the convex groove 16 allows the operator to accurately adjust the position of the moving block 18, thereby ensuring the stability and accuracy of the carton during the pushing process. The adjustment process is relatively simple and intuitive, and the operator can easily make adjustments without complex tools or skills. After adjusting the moving block 18 to a suitable position, the external drive of the driving shaft 14 is started. At this time, the driving shaft 14 drives the moving block 18 at the bottom of the crank 15 to start circular motion. Since the moving block 18 slides on the inner wall of the sleeve 21, when the moving block 18 moves in a circular motion, it can drive the connecting plate 22 to slide back and forth on the support block 23. At the same time, the connecting plate 22 drives the push plate 10 through the slider 11 to push the corrugated cardboard boxes one by one onto the conveying roller 2 and transport them to the printing device 3 for printing. The pushing mechanism 6 realizes the function of automatically pushing the corrugated cardboard boxes and transporting them to the printing device 3 for printing through a series of actions such as adjusting the position of the moving block 18, starting the external drive, the crank 15 driving the moving block 18 to make a circular motion, and the connecting plate 22 driving the push plate 10 to push the cardboard box through the slider 11. This avoids multiple corrugated cardboard boxes from being stacked and transported into the printing device 3 for printing operations, and further avoids the problems of blurring, ghosting or missing printing of printed images and texts; Finally, when the push mechanism 6 pushes the corrugated carton, the connecting plate 22 of the push mechanism 6 will drive the connecting rod 29 of the centering mechanism 24 to drive the movable block 28 to slide on the guide rail 27. When the connecting rod 29 is pushed, the movable block 28 on the guide rail 27 moves away from each other, and then the movable block 28 drives the sliding bar 35 on the fixed block 32 to slide in the groove 34 and move away from each other synchronously. When the connecting rod 29 is pulled, the movable block 28 on the guide rail 27 moves toward each other, and then the movable block 28 drives the sliding bar 35 on the fixed block 32 to slide in the groove 34 and move toward each other synchronously, so that the fixed rod 36 on the sliding bar 35 contacts the two sides of the carton and supports the carton to ensure its centering transportation. Under the support of the fixed rod 36, the carton maintains a stable position and spacing and moves forward under the drive of the conveying roller 2. Through the coordinated work of the connecting rod 29, the movable block 28 and the sliding bar 35, accurate centering support of the carton can be achieved. The support of the fixing rod 36 ensures the stability and accuracy of the cartons during transportation. This mechanism can adapt to cartons of different sizes and shapes, improving the versatility and flexibility of the pushing mechanism 6. The entire pushing and centering process is automatically completed by the pushing mechanism 6 and the centering mechanism 24 without manual intervention.

[0035] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary, and within the spirit of the present invention, the technical features in the above embodiments or in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0036] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A conveying device for printing corrugated paper boxes, comprising: A support frame (1), wherein a plurality of conveying rollers (2) are rotatably mounted on the support frame (1), wherein the plurality of conveying rollers (2) are sleeved with adjacent conveying rollers (2) via pulleys, a docking platform (4) is arranged on one side of the support frame (1), a printing device (3) is arranged on the side of the support frame (1) away from the docking platform (4), and a docking platform (5) is arranged on one side of the printing device (3), wherein: It also includes a pushing mechanism (6), the pushing mechanism (6) is arranged on the docking platform (4), the pushing mechanism (6) includes a pushing plate (10) slidably arranged on the docking platform, a sliding block (11) is fixedly arranged at the bottom of the pushing plate (10), and a connecting plate (22) is fixedly connected to the bottom of the sliding block (11), and the pushing mechanism (6) is used to intermittently transport corrugated paper boxes one by one; The invention also comprises a centering mechanism (24), wherein the centering mechanism (24) is arranged on the support frame (1), and the centering mechanism (24) comprises fixing bars (33) symmetrically arranged at two ends of the support frame (1), wherein a groove (34) is provided through the fixing bar (33), wherein a sliding bar (35) is slidably provided in the groove (34), and fixing rods (36) are fixedly provided at equal intervals on the sliding bar (35), wherein the fixing rods (36) pass through between the conveying rollers (2), and the centering mechanism (24) is used for conveying the corrugated paper box in a center after the pushing mechanism (6) pushes the corrugated paper box onto the conveying roller (2).

2. A conveying device for printing corrugated paperboard according to claim 1, characterized in that: The pushing mechanism (6) further comprises a limiting component (7) and an adjusting component (13), wherein the limiting component (7) of the pushing mechanism (6) comprises limiting plates (8) symmetrically arranged on the docking platform (4), wherein the limiting plates (8) are fixed to the docking platform (4) by bolts, and movable plates (9) are movably arranged on one side of the two limiting plates (8) close to the conveying roller shaft (2).

3. A conveying device for printing corrugated paperboard according to claim 2, characterized in that: A through groove (12) is formed through the docking platform (4), the inner wall of the through groove (12) is slidably connected to the slider (11), and the slider (11) passes through the through groove (12) and extends to the bottom of the docking platform (4).

4. A conveying device for printing corrugated paperboard according to claim 3, characterized in that: The adjustment component (13) of the pushing mechanism (6) comprises a driving shaft (14) rotatably arranged at the bottom of the docking platform (4), the driving shaft (14) being externally connected to an external drive, a crank (15) being fixedly connected to the bottom of the driving shaft (14), a convex groove (16) being formed on a side of the crank (15) away from the driving shaft (14), the convex groove (16) being divided into two sections which are interconnected, namely a square movable section and a cylindrical movable section.

5. A conveying device for printing corrugated paperboard according to claim 4, characterized in that: A square block (17) is slidably disposed in the square movable section of the convex groove (16), a moving block (18) is slidably disposed in the cylindrical movable section of the convex groove (16), a through hole (19) is penetrated through the moving block (18), a threaded rod (20) is threadedly connected through the through hole (19), and an end of the threaded rod (20) is rotatably connected to the square block (17).

6. A conveying device for printing corrugated paper boxes according to claim 5, characterized in that: The outer surface of the moving block (18) is sleeved with a collar (21), and the outer surface of the moving block (18) slides on the inner wall of the collar (21). The outer surface of the collar (21) is fixedly connected to a connecting plate (22). The outer surface of the connecting plate (22) is penetrated by a supporting block (23), and the supporting block (23) is fixedly arranged at the bottom of the docking platform (4).

7. A conveying device for printing corrugated paperboard according to claim 1, characterized in that: The centering mechanism (24) further comprises a fixed plate (25) fixedly arranged on the support frame (1), a limit block (26) fixedly arranged on the fixed plate (25), a middle portion of the limit block (26) being penetrated by the connecting plate (22), and a guide rail (27) fixedly arranged on the middle portion of the fixed plate (25).

8. A conveying device for printing corrugated paperboard according to claim 7, characterized in that: The guide rail (27) is symmetrically slidably connected with a movable block (28), and a fixed block (32) is fixedly arranged on each of the movable blocks (28). The fixed blocks (32) are fixedly connected to the bottom of the sliding bar (35).

9. A conveying device for printing corrugated paper boxes according to claim 8, characterized in that: A connecting shaft (30) is fixedly disposed in the middle of each movable block (28), and a connecting rod (29) is rotatably disposed on the outer surface of each connecting shaft (30).

10. A conveying device for printing corrugated paper boxes according to claim 9, characterized in that: One end of the connecting rod (29) away from the first connecting shaft (30) is rotatably connected to the second connecting shaft (31), and the second connecting shaft (31) is fixedly arranged on the top of the connecting plate (22).

Images