Packaging box paperboard rotary cutting device

Abstract

The utility model relates to the technical field of pressing line cutting of paperboards for packaging boxes, in particular to a packaging box paperboard rotary cutting device, which is characterized in that a length cutting mechanism, a transverse creasing mechanism, a width cutting mechanism, a seam cutting mechanism and a longitudinal creasing mechanism are sequentially arranged on a rack along the feeding direction of the paperboards; a spiral cutter is arranged on the outer surface of a length cutting roller, a spiral indentation cutter is arranged on the outer surface of a transverse pressing roller, and the length cutting roller and the transverse pressing roller are arranged in a manner of inclining to the paperboard feeding direction, so that transverse indentations and shear marks on a packaging paperboard are ensured to be perpendicular to the paperboard feeding direction, inclination of the transverse indentations and the shear marks in the prior art is avoided, and the production efficiency is improved. By arranging the centering assembly, utilizing a lead screw structure and combining a sliding groove and an inserting block, the width between the width cutting rollers, the width between the seam cutting rollers and the width between the creasing rollers can be automatically adjusted conveniently and rapidly while rotation of the rollers is not affected, and the requirement for cutting packaging box paperboards of different sizes and widths is met.

Description

Technical Field

[0001] This utility model relates to the field of crease cutting technology for cardboard for packaging boxes, and in particular to a rotary cutting device for cardboard for packaging boxes. Background Technology

[0002] In the logistics sector, especially e-commerce logistics, the demand for product packaging has increased dramatically due to the massive volume of goods. Cardboard box packaging plays a crucial role in logistics transportation and product protection due to its advantages such as ease of processing and customization, environmental friendliness and recyclability, lightweight design, and low cost. Faced with a wide variety of goods, cardboard boxes of various sizes and shapes are needed to package them. Matching the size of the cardboard box to the packaged items not only saves cardboard but also prevents damage from collisions during transportation, and further reduces shipping costs. The main material for cardboard box packaging is cardboard, and creasing and cutting are among the important processes in making cardboard boxes.

[0003] In a product packaging production line, horizontal and vertical creases need to be pressed into the cardboard for folding, and cutting is required before folding. Creases along the cardboard feeding direction are called vertical creases, and creases perpendicular to the feeding direction are called horizontal creases. Existing cardboard crease and cutting devices use straight blades, meaning the blade is positioned perpendicular to the cardboard feeding direction. This processing method results in high shearing force, easily causing fraying of the cardboard edges and low cutting accuracy. Furthermore, with continuous cardboard feeding, the horizontal cuts and creases on the processed cardboard may develop a certain angle of inclination, which is detrimental to subsequent folding processes. In addition, because the straight blade performs line contact cutting, when the cardboard width is too large, the straight blade experiences excessive force, making it prone to incomplete cuts. Utility Model Content

[0004] Technical objective: In order to overcome the shortcomings of the existing technology, this utility model provides a packaging box cardboard rotary cutting device, which uses a rotary knife processing method to realize automated high-precision cutting and creasing of packaging box cardboard.

[0005] Technical Solution: To achieve the above objectives, this utility model discloses a cardboard rotary cutting device for packaging boxes, including a frame, and further including a cutting mechanism and a transverse creasing mechanism arranged sequentially along the cardboard feeding direction. The cutting mechanism includes a cutting roller and a cutting drive assembly for driving the cutting roller to rotate. A spiral cutter is provided on the outer surface of the cutting roller. The transverse creasing mechanism includes a transverse pressure roller and a transverse pressure drive assembly for driving the transverse pressure roller to rotate. A spiral creasing knife is provided on the outer surface of the transverse pressure roller. Both the cutting roller and the transverse pressure roller are inclined to the cardboard feeding direction.

[0006] Furthermore, it also includes a cutting mechanism disposed at the discharge end of the transverse creasing mechanism. The cutting mechanism includes a cutting roller, a cutting support roller, and a cutting drive assembly for driving the roller to rotate. The paperboard is conveyed between the cutting roller and the cutting support roller, and a cutting blade is disposed on the outer surface of the cutting roller.

[0007] Furthermore, it also includes a sewing mechanism disposed at the output end of the cutting mechanism and a longitudinal creasing mechanism disposed at the output end of the sewing mechanism. The sewing mechanism includes a sewing roller, a sewing support roller, and a sewing drive assembly for driving the roller to rotate. The outer surface of the sewing roller is provided with a plurality of sewing knives. The longitudinal creasing mechanism includes a longitudinal pressure roller, a longitudinal pressure support roller, and a longitudinal pressure drive assembly for driving the roller to rotate. The cardboard is conveyed between the sewing roller and the sewing support roller and between the longitudinal pressure roller and the longitudinal pressure support roller.

[0008] Furthermore, there are two cutting rollers, and the cardboard is conveyed between the two cutting rollers. The cutting drive assembly includes a cutting motor that drives the cutting rollers to rotate and gears that mesh with each other at both ends of the two cutting rollers.

[0009] Furthermore, the transverse creasing mechanism also includes a transverse pressure roller, the paperboard is conveyed between the transverse pressure roller and the transverse pressure roller, and the transverse pressure drive assembly includes a drive wheel disposed at the end of the transverse pressure roller and the transverse pressure roller, and the transverse pressure motor drives the drive wheel to rotate through a drive belt.

[0010] Furthermore, two of each of the width cutting roller, the sewing roller, and the longitudinal pressure roller are provided. The two width cutting rollers, the two sewing rollers, and the two longitudinal pressure rollers are symmetrically mounted on three centering rollers. The two width cutting rollers and the two sewing rollers are moved closer to each other or further away from each other through the centering assembly.

[0011] Furthermore, the centering roller is provided with a groove, and the centering assembly includes a threaded lead screw and a nut seat, as well as a centering motor for driving the lead screw to rotate and a centering slide rail. The outer surface of the nut seat is provided with a first sliding groove in the circumferential direction. The ends of the width cutting roller and the sewing roller are provided with a first insert block, which is inserted into the first sliding groove through the groove. The ends of the width cutting roller and the sewing roller are also provided with a second sliding groove, and the second insert block is slidably connected to the centering slide rail, which is inserted into the second sliding groove.

[0012] Furthermore, the longitudinal pressure roller is circumferentially provided with a longitudinal indentation knife and a groove three. One end of the insert block two in the centering assembly that drives the sewing roller is inserted into the groove two, and the other end is inserted into the groove three.

[0013] Furthermore, each of the length cutting mechanism, transverse creasing mechanism, width cutting mechanism, sewing mechanism, and longitudinal creasing mechanism is provided with a drive roller mechanism for paperboard conveying; each of the transverse creasing mechanism, width cutting mechanism, sewing mechanism, and longitudinal creasing mechanism is provided with a lifting adjustment mechanism to achieve sliding lifting adjustment with the frame.

[0014] Furthermore, the width cutting mechanism is slidably connected to the frame through a lifting assembly. The lifting assembly includes a lifting roller, a lifting motor that drives the lifting roller to rotate, a lifting frame and a lifting rod disposed at both ends of the centering roller. One end of the lifting rod is hinged to the lifting frame, and the other end is eccentrically hinged to the end face of the lifting roller. The lifting frame is slidably connected to the frame along the lifting slide rail.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The packaging cardboard rotary cutting device of this utility model sets a spiral cutter on the outer surface of the cutting roller and a spiral creasing cutter on the outer surface of the transverse pressure roller. The cutting roller and the transverse pressure roller are set at an angle to the feeding direction of the cardboard, forming a point contact cutting method similar to "scissors". The cardboard edge is smooth after cutting, which ensures the cutting accuracy. At the same time, it avoids the phenomenon of cardboard not being cut and the tilting of transverse creasing and cutting marks, so that the subsequent packaging box folding process is smooth and the folded box is more beautiful.

[0017] 2. By setting up the centering component and utilizing the screw structure, combined with the slide and the insert, the width between the cutting rollers, the sewing rollers and the creasing rollers can be automatically adjusted conveniently and quickly without affecting the rotation of the rollers, so as to meet the cutting of packaging box cardboard of different sizes and widths.

[0018] 3. By setting up a lifting component, when the width of the two cutting rollers needs to be adjusted, the lifting component can be used to quickly and automatically raise and lower the two cutting rollers. The width can be adjusted after the cutting rollers are raised, avoiding damage to the blades on the cutting rollers, and facilitating maintenance and other work. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the rotary cutting device of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the rotary cutting device of this utility model from another angle;

[0021] Figure 3 This is a top view of the rotary cutting device of this utility model;

[0022] Figure 4 This is a schematic diagram of the length-cutting mechanism and the transverse indentation mechanism;

[0023] Figure 5This is a schematic diagram of the idler roller structure;

[0024] Figure 6 This is a schematic diagram of a partial structure of the tuning component;

[0025] Figure 7 A partial structural diagram of the tailoring mechanism and the longitudinal indentation mechanism;

[0026] Figure 8 This is a schematic diagram of a partial structure of the lifting assembly;

[0027] Figure 9 This is a schematic diagram of a cardboard structure.

[0028] In the diagram: 1. Cutting length mechanism; 2. Transverse indentation mechanism; 3. Width cutting mechanism; 4. Sewing mechanism; 5. Longitudinal indentation mechanism; 6. Drive roller mechanism; 7. Leftover material; 8. Cutting length roller; 9. Spiral cutter; 10. Transverse pressure roller; 11. Spiral indentation knife; 12. Width cutting roller; 13. Width cutting support roller; 14. Width cutting drive assembly; 15. Width cutting knife; 16. Spiral short cutting knife; 17. Sewing roller; 18. Sewing support roller; 19. Sewing drive assembly; 20. Sewing knife; 21. U-shaped knife; 22. L-shaped knife; 23. F-shaped knife; 24. Longitudinal pressure roller; 25. Longitudinal pressure support roller; 26. 27. Longitudinal pressure drive assembly; 28. Cutting motor; 29. ​​Gear; 30. Transverse pressure idler roller; 31. Transmission wheel; 32. Transmission belt; 33. Transverse pressure motor; 34. Centering roller; 35. Groove; 36. Centering assembly; 37. Lead screw; 38. Nut seat; 39. Centering motor; 40. Centering slide rail; 41. Slide block one; 42. Slide block two; 43. Slide block two; 44. Longitudinal indentation knife; 45. Slide block three; 46. Lifting roller; 47. Lifting motor; 48. Lifting frame; 49. Lifting rod; 50. Lifting slide rail; 51. Roller body; 52. Conveyor drive motor. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 To be continued Figure 9 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0030] A cardboard rotary cutting device for packaging boxes includes a frame. Along the cardboard feeding direction, a length-cutting mechanism 1, a transverse creasing mechanism 2, a width-cutting mechanism 3, a sewing mechanism 4, and a longitudinal creasing mechanism 5 are sequentially arranged on the frame. A drive roller mechanism 6 for assisting cardboard conveying is also provided between each mechanism. The length-cutting mechanism 1 cuts continuous cardboard material to the required length; the width-cutting mechanism 3 cuts the cardboard to the required width; the transverse creasing mechanism 2 and the longitudinal creasing mechanism 5 press transverse and longitudinal creasing marks onto the cardboard for subsequent folding; and the sewing mechanism 4 removes excess material 7 from the cardboard. The excess material 7 includes seam material aligned with the transverse creasing lines and ear material on both sides of the cardboard tail. Figure 9 As shown, this is a cardboard structure processed using this device, with the arrow indicating the direction of cardboard feeding.

[0031] The cutting mechanism 1 includes a cutting roller 8 and a cutting drive assembly that drives the cutting roller 8 to rotate. A spiral cutter 9 is mounted on the outer surface of the cutting roller 8, coiled around its axis. The cutting roller 8 is inclined to the direction of paperboard feeding, and the offset angle α between the axis of the cutting roller 8 and the perpendicular direction of the paperboard feeding direction is equal to the spiral angle of the spiral cutter 9; the specific value is determined according to actual conditions. Specifically, two cutting rollers 8 are arranged vertically, and the paperboard is conveyed between them. The spiral cutters 9 on the two cutting rollers 8 are symmetrically arranged so that their blades are aligned during rotation, thus cutting the paperboard as it passes. The cutting drive assembly is driven by gear transmission; specifically, the cutting drive assembly includes a cutting motor 27 and gears 28. There are four gears 28, which are located at both ends of the two cutting rollers 8. The two gears 28 on the same side mesh with each other. The output end of the cutting motor 27 is connected to one end of the cutting roller 8 located below the cardboard. The cutting motor 27 drives it to rotate. Through the meshing between the gears 28, the power is transmitted to the cutting roller 8 located above the cardboard, so as to realize the relative rotation of the two cutting rollers 8.

[0032] The transverse creasing mechanism 2 includes a transverse pressure roller 10, a transverse pressure support roller 29, and a transverse pressure drive assembly. The cardboard is conveyed between the transverse pressure roller 10 and the transverse pressure support roller 29. A spiral creasing knife 11 is provided on the outer surface of the transverse pressure roller 10. The spiral creasing knife 11 is coiled around the axis of the transverse pressure roller 10 on the outer surface of the transverse pressure roller 10. The transverse pressure roller 10 is inclined to the cardboard feeding direction, and the angle setting method is the same as that of the cutting mechanism 1. The transverse pressing drive assembly utilizes belt drive for propulsion. Specifically, the transverse pressing drive assembly includes a drive wheel 30, a drive belt 31, and a transverse pressing motor 32. The drive wheel 30 is located at one end of the transverse pressing roller 10 and the transverse pressing idler roller 29. The output end of the transverse pressing motor 32 is also equipped with a drive wheel 30. The drive belt 31 is wound around each drive wheel 30, enabling relative rotation of the transverse pressing roller 10 and the transverse pressing idler roller 29. When the cardboard passes between the transverse pressing roller 10 and the transverse pressing idler roller 29, the transverse pressing roller 10 presses transverse indentations on the cardboard under the support of the transverse pressing idler roller 29. Since there are multiple transverse indentations, several sets of transverse pressing rollers 10 and transverse pressing idler rollers 29 can be provided to accelerate processing efficiency. In one embodiment, two sets of transverse indentation mechanisms 2 are provided, arranged along the cardboard feeding direction.

[0033] The cutting mechanism 3 includes a cutting roller 12, a cutting support roller 13, and a cutting drive assembly 14. The cutting drive assembly 14 consists of two drive motors, the outputs of which are connected to the ends of the cutting roller 12 and the cutting support roller 13, respectively, driving them to rotate relative to each other, and the cardboard is conveyed between them. A cutting blade 15 is provided on the outer surface of the cutting roller 12. The cutting blade 15 can be circumferentially arranged on the outer surface of the cutting roller 12, or it can include several spiral cutting blades 16. The spiral cutting blades 16 are evenly arranged around the axis of the cutting roller 12, and their ends are connected to the circumferentially arranged cutting blades 15. When the cardboard passes between the cutting roller 12 and the cutting support roller 13, the cardboard is supported by the cutting support roller 13, and the cutting blades 15 cut off the excess wide edge waste on the cardboard according to a preset width. At the same time, the spiral cutting blades 16 cut the longer waste into short pieces perpendicular to the feeding direction of the cardboard. Compared with long waste, short pieces of waste are easier to recycle. In one embodiment, both the width-cutting blade 15 and the spiral short-cutting blade 16 are serrated blades.

[0034] The sewing mechanism 4 includes a sewing roller 17, a sewing support roller 18, and a sewing drive assembly 19. The sewing drive assembly 19 consists of two drive motors, the outputs of which are connected to the sewing roller 17 and the sewing support roller 18 respectively, driving them to rotate relative to each other, thus conveying the cardboard between them. The outer surface of the sewing roller 17 is provided with a plurality of sewing knives 20, which can also be serrated knives. Figure 7As shown, the cutting blade 20 has various shapes, including a U-shaped blade 21, an L-shaped blade 22, and an F-shaped blade 23. The L-shaped blade 22 is used to cut the seam material at the beginning of the cardboard, the U-shaped blade 21 is used to cut the seam material in the middle of the cardboard, and the F-shaped blade is used to cut the ear material at the end of the cardboard. The parallel blades of the F-shaped blade can also be used to cut larger pieces of ear material into two smaller pieces, facilitating waste recycling. In one embodiment, one L-shaped blade 22, three U-shaped blades 21, and one F-shaped blade 23 are evenly arranged around the axis of the cutting roller 17. When the cardboard passes between the cutting roller 17 and the cutting support roller 18, the cutting blade 20 sequentially cuts the first seam material, the middle seam material, and the tail ear material under the support of the cutting support roller 18.

[0035] The longitudinal creasing mechanism 5 includes a longitudinal pressure roller 24, a longitudinal pressure idler roller 25, and a longitudinal pressure drive assembly 26. The longitudinal pressure drive assembly 26 is similar in arrangement to the transverse pressure drive assembly and will not be described again here. Driven by the longitudinal pressure drive assembly 26, the longitudinal pressure roller 24 and the longitudinal pressure idler roller 25 rotate relative to each other, and the paperboard is conveyed between them. The longitudinal pressure roller 24 is circumferentially provided with a protruding longitudinal creasing knife 44. When the paperboard passes between the longitudinal pressure roller 24 and the longitudinal pressure idler roller 25, the longitudinal pressure roller 24 presses longitudinal creasing marks on the paperboard under the support of the longitudinal pressure idler roller 25.

[0036] The drive roller mechanism 6 includes two rollers 51 arranged vertically and a conveying drive mechanism that drives the rollers 51 to rotate, and the cardboard is conveyed between the two rollers 51. Specifically, the two sets of drive roller mechanisms 6 located between the length cutting mechanism 1 and the transverse creasing mechanism 2, and between the transverse creasing mechanism 2 and the width cutting mechanism 3, share one set of conveying drive mechanism. Similarly, the two sets of drive roller mechanisms 6 located between the width cutting mechanism 3 and the sewing mechanism 4, and between the sewing mechanism 4 and the longitudinal creasing mechanism 5, share one set of conveying drive mechanism. The conveying drive mechanism also utilizes belt drive. A drive wheel 30 is provided at the end of the roller 51 located below the cardboard, and the output end of the conveying drive motor 52 is also connected to a drive wheel 30. The drive belt 31 is sleeved on the three drive wheels 30 to achieve transmission. By setting up the drive roller mechanism 6, the continuity and stability of the cardboard during the conveying process are ensured.

[0037] Since the cutting, seam trimming, and longitudinal creasing of cardboard are often symmetrically processed, two symmetrical cutting rollers 12, two seam trimming rollers 17, and two longitudinal creasing rollers 24 are respectively provided. The two cutting rollers 12, two seam trimming rollers 17, and two longitudinal creasing rollers 24 are symmetrically mounted on three centering rollers 33. The centering rollers 33 are hollow tubular structures with slots 34 extending through to the interior of the tube wall, arranged along the length of the centering roller 33. To facilitate automated adjustment of their spacing to accommodate different cardboard widths, in one embodiment, the two cutting rollers 12 and the two seam trimming rollers 17 are moved closer or further apart via a centering assembly 35.

[0038] The centering assembly 35 includes a threaded lead screw 36 and a nut seat 37, a centering motor 38 for driving the lead screw 36 to rotate, and a centering slide rail 39. A groove 40 is circumferentially provided on the outer surface of the nut seat 37. Insert blocks 41 are provided at the ends of the width-cutting roller 12 and the sewing roller 17, and these insert blocks 41 are inserted into the groove 40 through slots 34. A second circumferential groove 43 is also provided at the ends of the width-cutting roller 12 and the sewing roller 17. Specifically, a disc can be provided at the ends of the width-cutting roller 12 and the sewing roller 17, and the second groove 43 is circumferentially provided on the outer surface of the disc. A second insert block 42 is slidably connected to the centering slide rail 39 and is inserted into the second groove 43. The centering motor 38 rotates in both directions, driving the lead screw 36 to rotate, which in turn drives the nut seat 37 to move along the lead screw 36, thereby driving the width-cutting roller 12 or the sewing roller 17 to move. The threaded arrangement on the lead screw structure enables symmetrical movement between the two width-cutting rollers 12 or between the two sewing rollers 17. The centering component 35 allows for convenient and quick automated adjustment of the width between the rollers without affecting their rotation, accommodating the cutting of packaging cardboard of different widths. Since the seam end is aligned with the longitudinal crease, the sewing roller 17 and the longitudinal pressure roller 24 move synchronously. Therefore, in one embodiment, the longitudinal pressure roller 24 is circumferentially provided with a groove 3 45. One end of the insert 2 42 in the centering component 35 driving the sewing roller 17 is inserted into the groove 2 43, and the other end is inserted into the groove 3 45.

[0039] To facilitate adjustment of the roller pressure on the paperboard and for maintenance, the transverse creasing mechanism 2, the width cutting mechanism 3, the sewing mechanism 4, and the longitudinal creasing mechanism 5 are all equipped with lifting and adjusting mechanisms to achieve sliding lifting and adjustment with the frame, thereby adjusting the distance between the rollers above and below the paperboard and adjusting the pressure on the paperboard.

[0040] The transverse indentation mechanism 2, the sewing mechanism 4, and the longitudinal indentation mechanism 5 are adjusted using a star-shaped screw adjustment mechanism, which can be found in the utility model patent application with application number 202520811953.X, and will not be described in detail here. The width-cutting mechanism 3 is slidably connected to the frame through a lifting assembly. The lifting assembly includes a lifting roller 46, a lifting motor 47 that drives the lifting roller 46 to rotate, a lifting frame 48 disposed at both ends of the centering roller 33, and a lifting rod 49. One end of the lifting rod 49 is hinged to the lifting frame 48, and the other end is eccentrically hinged to the end face of the lifting roller 46. The lifting frame 48 is slidably connected to the frame along the lifting slide rail 50. The lifting motor 47 can drive the lifting roller 46 to rotate via belt drive. When the height of the width cutting roller 12 needs to be adjusted, the lifting motor 47 drives the lifting roller 46 to rotate. Since the lifting rod 49 is eccentrically hinged to the end face of the lifting roller 46, the height of the top of the lifting rod 49 changes accordingly due to the rotation of the lifting roller 46, which drives the lifting frame 48 at the top to move up and down along the lifting slide rail 50. The movement of the lifting frame 48 in turn drives the centering roller 33 and the width cutting roller 12 on it to move up and down.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cardboard rotary cutting device for packaging boxes, comprising a frame, characterized in that, The device includes a cutting mechanism (1) and a transverse creasing mechanism (2) arranged sequentially along the paperboard feeding direction. The cutting mechanism (1) includes a cutting roller (8) and a cutting drive assembly that drives the cutting roller (8) to rotate. The outer surface of the cutting roller (8) is provided with a spiral cutter (9). The transverse creasing mechanism (2) includes a transverse pressure roller (10) and a transverse pressure drive assembly that drives the transverse pressure roller (10) to rotate. The outer surface of the transverse pressure roller (10) is provided with a spiral creasing knife (11). Both the cutting roller (8) and the transverse pressure roller (10) are inclined to the paperboard feeding direction.

2. The packaging box paperboard rotary cutting apparatus according to claim 1, characterized in that, It also includes a cutting mechanism (3) disposed at the discharge end of the transverse creasing mechanism (2). The cutting mechanism (3) includes a cutting roller (12), a cutting support roller (13), and a cutting drive assembly (14) for driving the roller to rotate. The paperboard is conveyed between the cutting roller (12) and the cutting support roller (13). A cutting knife (15) is disposed on the outer surface of the cutting roller (12).

3. A packaging box paperboard rotary cutting apparatus according to claim 2, characterized in that, It also includes a sewing mechanism (4) disposed at the discharge end of the cutting mechanism (3) and a longitudinal creasing mechanism (5) disposed at the discharge end of the sewing mechanism (4). The sewing mechanism (4) includes a sewing roller (17), a sewing support roller (18) and a sewing drive assembly (19) for driving the roller to rotate. The outer surface of the sewing roller (17) is provided with a plurality of sewing knives (20). The longitudinal creasing mechanism (5) includes a longitudinal pressure roller (24), a longitudinal pressure support roller (25) and a longitudinal pressure drive assembly (26) for driving the roller to rotate. The cardboard is conveyed between the sewing roller (17) and the sewing support roller (18) and between the longitudinal pressure roller (24) and the longitudinal pressure support roller (25).

4. The packaging box paperboard rotary cutting apparatus according to claim 1, characterized in that, Two cutting rollers (8) are provided, and the paperboard is conveyed between the two cutting rollers (8). The cutting drive assembly includes a cutting motor (27) that drives the cutting rollers (8) to rotate and gears (28) that mesh with each other at both ends of the two cutting rollers (8).

5. The packaging box paperboard rotary cutting apparatus according to claim 3, characterized in that, The transverse creasing mechanism (2) also includes a transverse pressure roller (29), the cardboard is conveyed between the transverse pressure roller (10) and the transverse pressure roller (29), the transverse pressure drive assembly includes a drive wheel (30) disposed at the end of the transverse pressure roller (10) and the transverse pressure roller (29), and the transverse pressure motor (32) drives the drive wheel (30) to rotate through the drive belt (31).

6. The cardboard rotary cutting device for packaging boxes according to claim 3, characterized in that, Two of each of the width cutting roller (12), the sewing roller (17), and the longitudinal pressure roller (24) are provided. The two width cutting rollers (12), the two sewing rollers (17), and the two longitudinal pressure rollers (24) are symmetrically mounted on three centering rollers (33). The two width cutting rollers (12) and the two sewing rollers (17) are moved closer or further apart from each other by centering components (35).

7. A packaging box paperboard rotary cutting apparatus according to claim 6, characterized in that, The centering roller (33) is provided with a groove (34). The centering assembly (35) includes a threaded screw (36) and a nut seat (37), and also includes a centering motor (38) for driving the screw (36) to rotate and a centering slide rail (39). The outer surface of the nut seat (37) is provided with a first slide groove (40). The ends of the width cutting roller (12) and the sewing roller (17) are provided with a first insert (41). The first insert (41) is inserted into the first slide groove (40) through the groove (34). The ends of the width cutting roller (12) and the sewing roller (17) are also provided with a second slide groove (43). The second insert (42) is slidably connected to the centering slide rail (39). The second insert (42) is inserted into the second slide groove (43).

8. A packaging box paperboard rotary cutting apparatus according to claim 7, characterized in that, The longitudinal pressure roller (24) is circumferentially provided with a longitudinal indentation knife (44) and a three-way groove (45). One end of the insertion block two (42) in the centering assembly (35) that drives the sewing roller (17) is inserted into the two-way groove (43), and the other end is inserted into the three-way groove (45).

9. The packaging box paperboard rotary cutting apparatus according to claim 6, characterized in that, The length cutting mechanism (1), the transverse creasing mechanism (2), the width cutting mechanism (3), the sewing mechanism (4), and the longitudinal creasing mechanism (5) are each equipped with a drive roller mechanism (6) for paperboard conveying; the transverse creasing mechanism (2), the width cutting mechanism (3), the sewing mechanism (4), and the longitudinal creasing mechanism (5) are all equipped with a lifting adjustment mechanism to achieve sliding lifting adjustment with the frame.

10. The cardboard rotary cutting device for packaging boxes according to claim 9, characterized in that, The width cutting mechanism (3) is slidably connected to the frame through a lifting assembly. The lifting assembly includes a lifting roller (46), a lifting motor (47) that drives the lifting roller (46) to rotate, a lifting frame (48) set at both ends of the centering roller (33), and a lifting rod (49). One end of the lifting rod (49) is hinged to the lifting frame (48), and the other end is eccentrically hinged to the end face of the lifting roller (46). The lifting frame (48) is slidably connected to the frame along the lifting slide rail (50).

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