Guide device for packaging box printing based on visual inspection

Abstract

The invention discloses a guide device for packaging box printing based on visual inspection, and relates to the technical field of packaging box printing, the guide device comprises a rectangular block, a height frame, a rack rod, a rotating gear and a guide plate, the rectangular block is fixedly installed at the top of a conveying frame, and the height frame is slidably installed on the face, close to a roller, of the rectangular block; one end of the rack rod is fixedly installed on the face, away from the roller, of the height frame, a tooth groove is formed in the face, close to the roller, of the other end of the rack rod, a through groove is formed in the inner wall of the conveying frame, the rotating gear is rotationally installed at the bottom of the inner wall of the through groove, and the guide plate is fixedly installed at the top of the rotating gear. The conveying frame is kept smooth all the time, the packaging box meeting the size requirement can smoothly pass through and enter a finished product box, and therefore efficient operation of the whole production or packaging process is maintained, the downtime caused by blockage is shortened, and the manual cleaning cost caused by blockage is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging box printing, and specifically relates to a guiding device for packaging box printing based on visual detection. Background Technique

[0002] The guiding device for packaging box printing based on visual detection is a device used to detect packaging boxes, aiming to accurately detect packaging boxes while saving manpower.

[0003] The patent with the patent announcement number CN218968058U relates to a guiding device body. A plurality of roller shafts are rotatably installed on one side of the guiding device body. A fixed column is fixedly installed inside the guiding device body. One end of the fixed column is movably sleeved with an auxiliary block. An auxiliary rod is fixedly installed on one side of the auxiliary block. One end of the auxiliary rod is fixedly installed with a guiding frame. A moving block is slidably installed inside the guiding frame. A limiting strip is rotatably installed on one side of the guiding frame. By setting the fixed column, auxiliary block, guiding frame, moving block, support strip and top plate, the packaging box is placed on the surface of a plurality of roller shafts for transportation, so that the guiding frame and the moving block can be limited and fixed, ensuring the stability of the top plate. The top plate can resist the packaging box, and the packaging box with a suitable thickness is transported forward from the bottom of the top plate into the inside of the guiding device body.

[0004] In the above patent, the guiding frame and the moving block can be limited and fixed, ensuring the stability of the top plate. The top plate can resist the packaging box, and the packaging box with a suitable thickness is transported forward from the bottom of the top plate into the inside of the guiding device body. However, there are still problems. When blocking inappropriate packaging boxes, it will affect the subsequent transportation, cause blockage, and at the same time greatly consume manpower and material resources. At the same time, it is difficult to ensure whether the packaging boxes will be squeezed and damaged when the stacking of packaging boxes is too much. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a guiding device for packaging box printing based on visual detection, which solves the problems raised in the above background technique.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A guiding device for packaging box printing based on visual detection, including a transmission frame, a finished product box is slidably installed on the left side of the transmission frame, roller columns are arranged inside the transmission frame, and a guiding mechanism is arranged on the top of the transmission frame; Among them, the guiding mechanism includes a rectangular block, a height frame, a rack bar, a rotating gear and a guiding plate. The rectangular block is fixedly installed on the top of the transmission rack. The height frame is slidably installed on the side of the rectangular block close to the roller. One end of the rack bar is fixedly installed on the side of the height frame away from the roller. A tooth groove is formed on the side of the other end of the rack bar close to the roller. A through groove is formed on the inner wall of the transmission rack. The rotating gear is rotatably installed on the bottom of the inner wall of the through groove. The guiding plate is fixedly installed on the top of the rotating gear. A rolling column is rotatably installed on the side of the guiding plate close to the roller. A vision detection device is arranged on the side of the transmission rack; Among them, a recycling mechanism for recycling unqualified packaging boxes and a sorting mechanism for processing recycled items are arranged on the back of the transmission rack. When the size of the packaging box does not meet the requirements, it will push the height frame to slide on the rectangular block. At the same time, the guide plate will guide the packaging box to prevent the packaging box from contacting the rotating gear and causing damage to the packaging box.

[0007] According to the above technical solution, the guiding mechanism further includes a guide plate, a connecting plate and a limiting plate. The guide plate is fixedly installed on the bottom of the inner wall of the through groove. One end of the connecting plate is rotatably installed on the top of the guide plate. The limiting plate is rotatably installed on the other end of the connecting plate. When the guide plate rotates, it will drive the connecting plate to move. When the connecting plate moves, it will drive the limiting plate to move. When the limiting plate moves, the closure of the transmission rack will be released.

[0008] According to the above technical solution, the tooth groove of the rack bar meshes with the rotating gear. The limiting plate is rotatably installed on the transmission rack. When the rack bar moves, it will drive the rotating gear to rotate. When the rotating gear rotates, it will drive the guiding plate to rotate.

[0009] According to the above technical solution, the recycling mechanism includes a driving gear, a rack plate, an L-shaped push rod, a fixed block, an elastic telescopic block and a connecting long plate. The driving gear is fixedly installed at the end of the roller. The rack plate is slidably installed on the back of the transmission rack. The L-shaped push rod is fixedly installed at the end of the rack plate away from the finished product box. The fixed block is fixedly installed on the back of the transmission rack. The elastic telescopic block is fixedly installed on the top of the fixed block. A convex block is arranged on the top of the side of the elastic telescopic block away from the roller. One end of the connecting long plate is fixedly installed at the free end of the elastic telescopic block. When the rack plate moves upward, it will disengage from the driving gear. When the rack plate disengages from the driving gear, the rack plate will be reset due to the elastic force of the spring between it and the elastic telescopic block.

[0010] According to the above technical solution, the recycling mechanism further includes an elastic telescopic plate, a buckle block, and a square plate. The fixed end of the elastic telescopic plate is fixedly installed on the top surface of the other end of the connecting long plate. One end of the buckle block is fixedly installed at the fixed end of the elastic telescopic plate, and a soft plate is fixedly installed at the other end of the buckle block. The square plate is fixedly installed at the free end of the elastic telescopic plate. When the number of packaging boxes on the top of the square plate reaches the standard, the buckle block on the elastic telescopic plate will undergo elastic deformation, enabling the elastic telescopic plate to contract upward, preventing the square plate from continuing to push upward and damaging the packaging boxes.

[0011] According to the above technical solution, the limiting plate contacts the convex block on the top of the elastic telescopic block, the driving gear meshes with the rack plate, and the soft plate of the buckle block contacts the free end of the elastic telescopic plate. When the limiting plate contacts the convex block on the elastic telescopic block, it will press down the convex block, and when the convex block moves downward, it will drive the elastic telescopic block to move downward.

[0012] According to the above technical solution, the sorting mechanism includes a container box, a door panel, a cover plate, a blocking plate, a transmission plate, an elastic telescopic vertical plate, a U-shaped plate, a stress plate, a lock handle, a socket, and a limiting rod. The container box is fixedly installed on the back of the transmission rack, the door panel is rotatably installed on the front of the container box, the cover plate is rotatably installed on the inner wall of the container box, the blocking plate is slidably installed inside the container box, one end of the transmission plate is fixedly installed at the bottom of the blocking plate, one end of the U-shaped plate is fixedly installed at the other end of the transmission plate, the stress plate is fixedly installed at the other end of the U-shaped plate, the fixed end of the elastic telescopic vertical plate is fixedly installed at the bottom of the inner wall of the transmission rack, the free end of the elastic telescopic vertical plate is fixedly connected to the blocking plate, the lock handle is fixedly installed on the front of the blocking plate, the socket is fixedly installed on the front of the door panel, and the limiting rod is fixedly installed on the front of the container box. When the limit of the lock handle is released, the blocking plate will rise under the action of the elastic telescopic vertical plate. When the blocking plate rises, it will cause the lock handle to continue to limit the socket, and at the same time, when the blocking plate rises, it will cause the cover plate to return to its original position.

[0013] According to the above technical solution, the lock handle and the socket are slidably installed. A sliding rod is provided inside the limiting rod, the limiting rod contacts the lock handle, and the cover plate contacts the blocking plate. When the blocking plate moves, it will drive the lock handle to move, pull out the rod on the socket, and when the limit of the door panel is released, the door panel can be opened to take out the internal object. When the blocking plate moves downward, the limiting rod is pulled back.

[0014] The present invention provides a guiding device for packaging box printing based on visual inspection, having the following beneficial effects: (1)When the size of the packaging box does not meet the requirements, the invention will push the height frame to slide on the rectangular block. At the same time, the guide plate will guide the packaging box to avoid contact between the packaging box and the rotating gear, thus preventing damage to the packaging box. When the limiting plate moves, the enclosure of the transmission rack will be released. When the enclosure of the transmission rack is released, the packaging box will leave the roller, ensuring that the transmission rack always remains unobstructed, enabling the packaging box that meets the size requirements to pass through smoothly and enter the finished product box, thereby maintaining the efficient operation of the entire production or packaging process and reducing the downtime and manual cleaning costs caused by blockages.

[0015] (2)When the L push rod moves, the invention will push the packaging box away from the driving gear, providing a certain amount of power to the packaging box and preventing the packaging box from only moving to the first collection box. When the square plate moves, it will push the stacked packaging boxes above, avoiding unevenness between the packaging boxes, which helps to ensure the smooth progress of subsequent processes, making the packaging box more stable during handling, stacking, or boxing. The flat packaging boxes are stacked more stably and are not easily toppled, improving the efficiency and safety of the entire packaging process.

[0016] (3)After the blocking of the packaging box by the blocking plate disappears, the cover plate will block the entrance of the container box, preventing the packaging box from continuing to enter or external objects from accidentally entering under unexpected circumstances. When the blocking plate moves downward, the limit on the cover plate will be released. When the limit on the cover plate is released, the cover plate will rotate downward to block the entrance of the container box, avoiding interference with the transportation above when removing items from the upper and lower parts, and being able to stably control the collection and transmission process of the packaging box, preventing chaos, stacking, or blockage of the packaging box in the container box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the rotating gear and the guide plate of the present invention; Figure 3 is of the present invention Figure 2 a schematic enlarged view of the structure of part A; Figure 4 is a schematic diagram of the structure of the container box and the door plate of the present invention; Figure 5 is a schematic diagram of the structure of the blocking plate and the U plate of the present invention; Figure 6 is a schematic diagram of the structure of the elastic telescopic plate and the container box of the present invention; Figure 7 is of the present invention Figure 6 a schematic enlarged view of the structure of part B.

[0018] In the figure: 1, transmission rack; 2, finished product box; 301, rectangular block; 302, height rack; 303, rack bar; 304, rotating gear; 305, guide plate; 306, guide board; 307, connecting plate; 308, limiting plate; 4, roller; 501, driving gear; 502, rack plate; 503, L-shaped push rod; 504, fixed block; 505, elastic telescopic block; 506, connecting long plate; 507, elastic telescopic plate; 508, buckling block; 509, square plate; 601, container box; 602, door panel; 603, cover plate; 604, blocking plate; 605, transmission plate; 606, elastic telescopic vertical plate; 607, U-shaped plate; 608, stress plate; 609, lock handle; 610, socket; 611, limiting bar. Detailed implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 of 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.

[0020] Please refer to Figures 1 - 7 , an embodiment of the present invention is: a guiding device for packaging box printing based on visual detection, including a transmission rack 1, a finished product box 2 is slidably installed on the left side of the transmission rack 1, a roller 4 is arranged inside the transmission rack 1, and a guiding mechanism is arranged on the top of the transmission rack 1; Among them, the guiding mechanism includes a rectangular block 301, a height rack 302, a rack bar 303, a rotating gear 304 and a guide plate 305. The rectangular block 301 is fixedly installed on the top of the transmission rack 1. The height rack 302 is slidably installed on the side of the rectangular block 301 close to the roller 4. One end of the rack bar 303 is fixedly installed on the side of the height rack 302 away from the roller 4. A tooth groove is opened on the side of the other end of the rack bar 303 close to the roller 4. A through groove is opened on the inner wall of the transmission rack 1. The rotating gear 304 is rotatably installed at the bottom of the inner wall of the through groove. The guide plate 305 is fixedly installed on the top of the rotating gear 304. A rolling column is rotatably installed on the side of the guide plate 305 close to the roller 4. A visual detection device is arranged on the side of the transmission rack. The visual detection device can detect the placement of the packaging box to ensure that the transmission rack 1 is always unobstructed, so that the packaging box that meets the size requirements can pass through smoothly and enter the finished product box 2, thereby maintaining the efficient operation of the entire production or packaging process and reducing the downtime and manual cleaning cost caused by blockage.

[0021] The guiding mechanism further includes a guide plate 306, a connecting plate 307 and a limiting plate 308. The guide plate 306 is fixedly installed at the bottom of the inner wall of the through groove. One end of the connecting plate 307 is rotatably installed on the top of the guide plate 305, and the limiting plate 308 is rotatably installed at the other end of the connecting plate 307. When the guide plate 305 rotates, it will drive the connecting plate 307 to move. When the connecting plate 307 moves, it will drive the limiting plate 308 to move. When the limiting plate 308 moves, the enclosure of the transmission rack 1 will be released.

[0022] The tooth groove of the rack bar 303 meshes with the rotating gear 304. The limiting plate 308 is rotatably installed with the transmission rack 1. When the rack bar 303 moves, it will drive the rotating gear 304 to rotate. When the rotating gear 304 rotates, it will drive the guide plate 305 to rotate.

[0023] During the operation of this embodiment: Place the packaging box on the roller 4 inside the transmission rack 1. When the roller 4 starts, it will drive the packaging box to move towards the finished product box 2. When the size of the packaging box meets the requirements, it will enter the finished product box 2 through the height frame 302. When the size of the packaging box does not meet the requirements, it will push the height frame 302 to slide on the rectangular block 301. At the same time, the guide plate 306 will guide the packaging box to avoid contact with the rotating gear 304 and cause damage to the packaging box. When the height frame 302 moves, it will drive the rack bar 303 to move. When the rack bar 303 moves, it will drive the rotating gear 304 to rotate. When the rotating gear 304 rotates, it will drive the guide plate 305 to rotate. When the guide plate 305 rotates, it will push the packaging box in front of the height frame 302 away from the rectangular block 301. When the guide plate 305 rotates, it will drive the connecting plate 307 to move. When the connecting plate 307 moves, it will drive the limiting plate 308 to move. When the limiting plate 308 moves, the enclosure of the transmission rack 1 will be released. When the enclosure of the transmission rack 1 is released, the packaging box will leave the roller 4.

[0024] Please refer to Figures 1 - 7, on the basis of the above embodiments, in another embodiment of the present invention, a recycling mechanism for recycling unqualified packaging boxes and a sorting mechanism for processing recycled items are provided on the back of the transfer rack. The recycling mechanism includes a driving gear 501, a rack plate 502, an L-shaped push rod 503, a fixing block 504, an elastic telescopic block 505 and a connecting long plate 506. The driving gear 501 is fixedly installed at the end of the roller 4. The rack plate 502 is slidably installed on the back of the transfer rack 1. The L-shaped push rod 503 is fixedly installed at one end of the rack plate 502 away from the finished product box 2. The fixing block 504 is fixedly installed on the back of the transfer rack 1. The elastic telescopic block 505 is fixedly installed on the top of the fixing block 504. A convex block is provided at the top of the elastic telescopic block 505 on the side away from the roller 4. One end of the connecting long plate 506 is fixedly installed at the free end of the elastic telescopic block 505, avoiding unevenness between the packaging boxes, which helps to ensure the smooth progress of subsequent processes, making the packaging boxes more stable during handling, stacking or boxing. The flat packaging boxes are stacked more stably and are not easily toppled, improving the efficiency and safety of the entire packaging process.

[0025] The recycling mechanism further includes an elastic telescopic plate 507, a buckle 508 and a square plate 509. The fixed end of the elastic telescopic plate 507 is fixedly installed on the top surface of the other end of the connecting long plate 506. One end of the buckle 508 is fixedly installed at the fixed end of the elastic telescopic plate 507. A soft plate is fixedly installed at the other end of the buckle 508. The square plate 509 is fixedly installed at the free end of the elastic telescopic plate 507. When the number of packaging boxes on the top of the square plate 509 reaches the standard, the buckle 508 on the elastic telescopic plate 507 will undergo elastic deformation, enabling the elastic telescopic plate 507 to contract upward, preventing the square plate 509 from continuing to push upward and causing damage to the packaging boxes.

[0026] The limiting plate 308 contacts the convex block on the top of the elastic telescopic block 505. The driving gear 501 meshes with the rack plate 502. The soft plate of the buckle 508 contacts the free end of the elastic telescopic plate 507. When the limiting plate 308 contacts the convex block on the elastic telescopic block 505, it will press down the convex block. When the convex block moves downward, it will drive the elastic telescopic block 505 to move downward.

[0027] The sorting mechanism includes a container box 601, a door panel 602, a cover plate 603, a baffle plate 604, a transmission plate 605, an elastic telescopic vertical plate 606, a U-shaped plate 607, a force-bearing plate 608, a lock handle 609, a socket 610 and a limit bar 611. The container box 601 is fixedly installed on the back of the transmission rack 1. The door panel 602 is rotatably installed on the front of the container box 601. The cover plate 603 is rotatably installed on the inner wall of the container box 601. The baffle plate 604 is slidably installed inside the container box 601. One end of the transmission plate 605 is fixedly installed at the bottom of the baffle plate 604. One end of the U-shaped plate 607 is fixedly installed at the other end of the transmission plate 605. The force-bearing plate 608 is fixedly installed at the other end of the U-shaped plate 607. The fixed end of the elastic telescopic vertical plate 606 is fixedly installed at the bottom of the inner wall of the transmission rack 1. The free end of the elastic telescopic vertical plate 606 is fixedly connected to the baffle plate 604. The lock handle 609 is fixedly installed on the front of the baffle plate 604. The socket 610 is fixedly installed on the front of the door panel 602. The limit bar 611 is fixedly installed on the front of the container box 601, which can prevent the lower part above from interfering with the transportation of the upper part when moving the items, and can stably control the collection and transmission process of the packaging boxes, avoiding the phenomena of chaos, accumulation or blockage of the packaging boxes in the container box 601.

[0028] The lock handle 609 and the socket 610 are slidably installed. There is a sliding bar inside the limit bar 611. The limit bar 611 contacts the lock handle 609. The cover plate 603 contacts the baffle plate 604. When the baffle plate 604 moves, it will drive the lock handle 609 to move, pulling the rod on the socket 610. When the limit of the door panel 602 is released, the door panel 602 can be opened to take out the internal object. When the baffle plate 604 moves downward, the limit bar 611 is pulled back.

[0029] During the operation of this embodiment: When the limiting plate 308 moves, the packaging box will fall above the elastic telescopic block 505, and when the limiting plate 308 moves, it will contact the convex block above the elastic telescopic block 505. When the limiting plate 308 contacts the convex block on the elastic telescopic block 505, it will press down the convex block. When the convex block moves downward, it will drive the elastic telescopic block 505 to move downward. When the elastic telescopic block 505 moves downward, it will drive the rack plate 502 to move downward. When the rack plate 502 moves downward, it will engage with the driving gear 501. Since the roller 4 is rotating, the driving gear 501 will also rotate. When the driving gear 501 rotates, it will drive the rack plate 502 to move in the direction closer to the elastic telescopic block 505. When the rack plate 502 moves, it will drive the L push rod 503 to move. When the L push rod 503 moves, it will push the packaging box in the direction away from the driving gear 501. When the packaging box leaves the elastic telescopic block 505, the elastic telescopic block 505 will move upward due to the bottom fixing block 504. When the elastic telescopic block 505 moves upward, it will drive the rack plate 502 to move upward. When the rack plate 502 moves upward, it will disengage from the driving gear 501. When the rack plate 502 disengages from the driving gear 501, the rack plate 502 will reset due to the elastic force of the spring between it and the elastic telescopic block 505. When the elastic telescopic block 505 moves, it will drive the connecting long plate 506 to move. When the connecting long plate 506 moves, it will drive the elastic telescopic plate 507 to move. When the elastic telescopic plate 507 moves, it will drive the square plate 509 to move. When the square plate 509 moves, it will push the stacked packaging boxes above, avoiding unevenness between the packaging boxes. When the number of packaging boxes on the top of the square plate 509 reaches the standard, the buckle 508 on the elastic telescopic plate 507 will undergo elastic deformation, enabling the elastic telescopic plate 507 to contract upward, preventing the square plate 509 from continuing to push upward and damaging the packaging boxes.

[0030] There are several compartments inside the container box 601. When the packaging box is pushed into the inside of the container box 601, it will contact the blocking plate 604, thereby blocking the packaging box inside the first collection compartment. At the same time, when there are too many packaging boxes above the square plate 509, it will press the square plate 509 to move downward. When the square plate 509 moves downward, it will drive the stress plate 608 to move downward. When the stress plate 608 moves downward, it will drive the U-shaped plate 607 to move. When the U-shaped plate 607 moves, it will drive the transmission plate 605 to move. When the transmission plate 605 moves, it will drive the blocking plate 604 to move downward. When the blocking plate 604 moves downward, the limit on the cover plate 603 will be released. When the limit on the cover plate 603 is released, the cover plate 603 will reverse downward to block the entrance of the container box 601. When the blocking plate 604 moves, it will drive the lock handle 609 to move, pulling the rod on the socket 610. When the lock handle 609 moves, the limit on the door panel 602 will be released. When the limit on the door panel 602 is released, the door panel 602 can be opened to take out the objects inside. When the blocking plate 604 moves downward, the limit bar 611 will be pulled back to limit the lock handle 609. When the lock handle 609 is limited, it can prevent the blocking plate 604 from blocking the packaging boxes above. After the blocking of the packaging boxes by the blocking plate 604 disappears, and at the same time the cover plate 603 blocks the entrance of the container box 601, the packaging boxes will enter the next interval. After the packaging boxes inside the previous one are cleared, the door panel 602 is closed, and the limit bar 611 is pulled to release the limit on the lock handle 609. After the limit on the lock handle 609 is released, the blocking plate 604 will rise under the action of the elastic telescopic vertical plate 606. When the blocking plate 604 rises, it will cause the lock handle 609 to continue to limit the socket 610. At the same time, when the blocking plate 604 rises, it will cause the cover plate 603 to return to its original position.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A guiding device for packaging box printing based on visual detection, comprising a transmission frame (1), characterized in that: A finished product box (2) is slidably installed on the left side of the transfer rack (1). A roller (4) is arranged inside the transfer rack (1), and a guiding mechanism is arranged on the top of the transfer rack (1). Among them, the guiding mechanism includes a rectangular block (301), a height rack (302), a rack bar (303), a rotating gear (304) and a guiding plate (305). The rectangular block (301) is fixedly installed on the top of the transfer rack (1). The height rack (302) is slidably installed on the side of the rectangular block (301) close to the roller (4). One end of the rack bar (303) is fixedly installed on the side of the height rack (302) away from the roller (4). A tooth groove is formed on the side of the other end of the rack bar (303) close to the roller (4). A through groove is formed on the inner wall of the transfer rack (1). The rotating gear (304) is rotatably installed at the bottom of the inner wall of the through groove. The guiding plate (305) is fixedly installed on the top of the rotating gear (304). A rolling column is rotatably installed on the side of the guiding plate (305) close to the roller (4). A vision detection device is arranged on the side of the transfer rack (1). Among them, a recycling mechanism for recycling unqualified packaging boxes and a sorting mechanism for processing recycled items are arranged on the back of the transfer rack (1).

2. The guiding device for packaging box printing based on visual detection according to claim 1, wherein: The guiding mechanism further includes a guide plate (306), a connecting plate (307) and a limiting plate (308). The guide plate (306) is fixedly installed at the bottom of the inner wall of the through groove. One end of the connecting plate (307) is rotatably installed on the top of the guiding plate (305). The limiting plate (308) is rotatably installed at the other end of the connecting plate (307).

3. The guiding device for box printing based on visual detection according to claim 2, characterized in that: The tooth groove of the rack bar (303) meshes with the rotating gear (304), and the limiting plate (308) is rotatably installed with the transfer rack (1).

4. A guiding device for box printing based on visual detection according to claim 3, characterized in that: The recycling mechanism includes a driving gear (501), a rack plate (502), an L-shaped push rod (503), a fixed block (504), an elastic telescopic block (505) and a connecting long plate (506). The driving gear (501) is fixedly installed at the end of the roller (4). The rack plate (502) is slidably installed on the back of the transfer rack (1). The L-shaped push rod (503) is fixedly installed at the end of the rack plate (502) away from the finished product box (2). The fixed block (504) is fixedly installed on the back of the transfer rack (1). The elastic telescopic block (505) is fixedly installed on the top of the fixed block (504). A convex block is arranged at the top of the side of the elastic telescopic block (505) away from the roller (4). One end of the connecting long plate (506) is fixedly installed at the free end of the elastic telescopic block (505).

5. The guiding device for packaging box printing based on visual detection according to claim 4, characterized in that: The recycling mechanism further includes an elastic telescopic plate (507), a buckle block (508) and a square plate (509). The fixed end of the elastic telescopic plate (507) is fixedly installed on the top surface of the other end of the connecting long plate (506). One end of the buckle block (508) is fixedly installed at the fixed end of the elastic telescopic plate (507). A soft plate is fixedly installed at the other end of the buckle block (508). The square plate (509) is fixedly installed at the free end of the elastic telescopic plate (507).

6. The guiding device for packaging box printing based on visual detection according to claim 5, characterized in that: The limiting plate (308) contacts the convex block at the top of the elastic telescopic block (505). The driving gear (501) meshes with the rack plate (502). The soft plate of the buckle block (508) contacts the free end of the elastic telescopic plate (507).

7. The guiding device for box printing based on visual detection according to claim 6, wherein: The sorting mechanism includes a container box (601), a door panel (602), a cover plate (603), a blocking plate (604), a transmission plate (605), an elastic telescopic vertical plate (606), a U-shaped plate (607), a stress plate (608), a lock handle (609), a socket (610) and a limiting bar (611). The container box (601) is fixedly installed on the back of the transmission rack (1). The door panel (602) is rotatably installed on the front of the container box (601). The cover plate (603) is rotatably installed on the inner wall of the container box (601). The blocking plate (604) is slidably installed inside the container box (601). One end of the transmission plate (605) is fixedly installed at the bottom of the blocking plate (604). One end of the U-shaped plate (607) is fixedly installed at the other end of the transmission plate (605). The stress plate (608) is fixedly installed at the other end of the U-shaped plate (607). The fixed end of the elastic telescopic vertical plate (606) is fixedly installed at the bottom of the inner wall of the transmission rack (1). The free end of the elastic telescopic vertical plate (606) is fixedly connected to the blocking plate (604). The lock handle (609) is fixedly installed on the front of the blocking plate (604). The socket (610) is fixedly installed on the front of the door panel (602). The limiting bar (611) is fixedly installed on the front of the container box (601).

8. A guiding device for packaging box printing based on visual detection according to claim 7, characterized in that: The lock handle (609) is slidably installed with the socket (610). A sliding bar is arranged inside the limiting bar (611). The limiting bar (611) contacts the lock handle (609). The cover plate (603) contacts the blocking plate (604).

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