An automatic stacking machine for corrugated carton processing

Abstract

This invention discloses an automatic palletizing machine for corrugated cardboard box processing, belonging to the field of palletizing machine technology. The invention includes a conveyor frame for transporting corrugated cardboard, with a robotic arm mounted on the outer side of the conveyor frame. A mounting frame is fixedly installed at the end of the robotic arm, and hydraulic cylinders are symmetrically mounted on the mounting frame. The output ends of the hydraulic cylinders are fixedly connected to grippers. A negative pressure box is elastically and vertically mounted on the mounting frame, with a negative pressure pump connected to the upper end of the negative pressure box via a pipe. A sealing slide plate is slidably and sealingly installed on the inner side of the negative pressure box, and an air supply component is provided on the sealing slide plate. Suction cups are uniformly and fixedly installed through the lower end of the negative pressure box. This automatic palletizing machine for corrugated cardboard box processing achieves stable clamping and handling of corrugated cardboard through the cooperation of mechanical clamping and negative pressure adsorption, and can automatically support the cardboard in case of accidental loosening, effectively ensuring palletizing efficiency.

Description

Technical Field

[0001] This invention relates to the field of palletizing machine technology, specifically to an automatic palletizing machine for corrugated cardboard box processing. Background Technology

[0002] Corrugated cardboard boxes are widely used in packaging and transportation scenarios in various fields such as food, electronics, logistics, and chemicals due to their advantages such as lightweight, high strength, recyclability, and low cost. They are an indispensable core packaging carrier in the modern packaging industry. In the process of corrugated cardboard box processing, in order to facilitate subsequent packaging and transportation, the bundled corrugated cardboard needs to be stacked.

[0003] Prior art (Chinese patent publication number: CN121990381A, publication date: 2026-05-08) discloses corrugated carton palletizing equipment, relating to the field of palletizers, including a carton conveying unit. A synchronous adjustment mechanism drives a clamping plate to push the cartons, enabling the cartons on the pallet and the transferred cartons to quickly adhere and align, reducing alignment deviations between adjacent cartons, reducing the likelihood of stack collapse, and improving palletizing alignment accuracy. The synchronous adjustment mechanism solves the problem of air leakage from suction cups causing cartons to fall in prior art; it also solves the problem of impurities adhering to suction cups reducing their lifespan; and it solves the problem of cumbersome suction cup positioning leading to low work efficiency. Prior art (Chinese patent publication number: CN118047231A, publication date: 2026-05-08) is also mentioned. Chinese Patent No. 4-05-17 discloses a carton palletizing machine and its usage method, including a conveyor belt, a robotic arm, a gripping mechanism, a support mechanism, and a suction mechanism. The gripping mechanism is used to limit the outer wall of the carton. The support mechanism is set on the gripping mechanism and is used to lift the carton upward. The suction mechanism is used to limit and fix the upper surface of the carton. By moving the clamping block, the support block and the connecting block move together. The connecting block drives the bottom of the movable block to move together. The bottom of the movable block presses the connecting block downward. The connecting block drives the top of the movable rod to move downward together. The bottom of the movable rod pushes the support block downward. The bottom of the support block presses against the arc-shaped surface of the limiting block. When the clamping block is in contact with the outer wall of the carton, the support block rotates to the lower surface of the carton, lifting and supporting the lower surface of the carton upward, improving the stability of the carton gripping and reducing the squeezing damage to the carton.

[0004] Most existing automatic palletizing machines for corrugated cardboard boxes use a single clamp for handling and palletizing. However, corrugated cardboard has a certain cavity, and in order to avoid damage to the cardboard, the clamping force needs to be reasonably controlled. Furthermore, there is a lack of secondary support mechanisms to prevent slippage, which makes it easy for slippage to occur during handling, thereby affecting the normal palletizing efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic palletizing machine for corrugated cardboard box processing, in order to solve the problem mentioned in the background art. Most of the automatic palletizing machines for corrugated cardboard box processing on the market use a single clamp for handling and palletizing. However, corrugated cardboard has a certain cavity. In order to avoid damage to the cardboard, the clamping force needs to be reasonably controlled, and there is a lack of secondary support mechanism for slippage protection, which makes it easy for slippage to occur during handling.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic palletizing machine for corrugated cardboard box processing, comprising a conveyor frame for conveying corrugated cardboard, a robotic arm disposed on the outer side of the conveyor frame, and a mounting frame fixedly mounted at the end of the robotic arm, with hydraulic cylinders symmetrically fixedly mounted on the mounting frame, and grippers fixedly connected to the output ends of the hydraulic cylinders; a negative pressure box is elastically and vertically mounted on the mounting frame, and a negative pressure pump is connected to the upper end of the negative pressure box via a pipe; a sealing slide plate is slidably and sealingly disposed on the inner side of the negative pressure box. An air supply assembly is provided on the slide plate. Suction cups are uniformly and fixedly installed through the lower end of the negative pressure box. An adapter pipe is connected to the upper outer side of the negative pressure box. A piston cylinder is fixedly installed on the outer side of the gripper. When the sealing slide plate moves to the highest point in the negative pressure box, the upper part of the negative pressure box and the piston cylinder are connected through the air supply assembly. A piston plate is slidably connected to the inner side of the piston cylinder, and a pull rod is fixedly installed on the piston plate. An anti-detachment plate is rotatably installed on the outer side of the gripper. During the lifting and lowering of the pull rod, the anti-detachment plate is driven to rotate through the transmission assembly.

[0007] Preferably, the grippers are slidably mounted on the mounting frame, and an elastic telescopic rod is fixedly mounted on the grippers. A guide post is fixedly mounted on the negative pressure box, and the guide post and the mounting frame are connected by a spring elastic lifting connection. Guide blocks are symmetrically fixedly mounted on both sides of the negative pressure box. The end of the elastic telescopic rod is attached to the inclined surface of the guide block. When the two grippers are close together, the elastic telescopic rod slides along the inclined surface of the guide block, driving the negative pressure box to move downward.

[0008] Preferably, during the downward movement of the negative pressure box, the lower end of the suction cup is sealed and adhered to the surface of the cardboard. A first sealing plug is slidably installed on the inner side of the suction cup, and a spring is connected between the first sealing plug and the suction cup. An inner cylinder is fixedly installed on the upper end of the first sealing plug. The inner cylinder and the through hole opened at the upper end of the suction cup are fitted with a clearance. When the sealing slide moves upward inside the negative pressure box, the first sealing plug moves upward inside the suction cup.

[0009] Preferably, a second sealing plug is slidably installed on the inner side of the inner cylinder and the first sealing plug, and a sliding rod is fixedly installed on the upper end of the second sealing plug. The sliding rod is slidably installed through the inner cylinder and the sliding rod, and a spring is connected between the inner cylinder and the sliding rod.

[0010] Preferably, the gas delivery assembly includes a connecting air hole on the sealing plate, and when the sealing plate moves to its highest position inside the negative pressure box, the connecting air hole and the lower end of the adapter pipe are connected, and both the upper and lower ends of the adapter pipe are connected to the inside of the negative pressure box. The inner side of the sealing plate is provided with a cavity that communicates with the connecting air hole, and the internal cavity of the sealing plate is connected to the piston cylinder through a gas delivery pipe.

[0011] Preferably, when the air pressure inside the piston cylinder decreases, the piston plate elastically moves downward inside the piston cylinder, and the piston plate is fixedly connected to a movable frame by a tie rod.

[0012] Preferably, the transmission assembly includes a rack fixedly mounted on the movable frame, and a gear is fixedly mounted on the shaft of the anti-detachment plate. During the downward movement of the movable frame, the rack and gear mesh to drive the anti-detachment plate to rotate.

[0013] Preferably, the anti-detachment plate is initially arranged parallel to the lower outer side of the gripper, and after rotation, the anti-detachment plate is attached to and supported under the corrugated cardboard.

[0014] Preferably, an elastic bladder is fixedly connected between the gripper and the anti-detachment plate, and a cleaning nozzle is fixedly installed on the gripper. The elastic bladder and the cleaning nozzle are connected by a pipe, and the nozzle of the cleaning nozzle faces the lower end of the suction cup. When the elastic bladder is squeezed, air is blown towards the lower end of the suction cup through the cleaning nozzle.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the automatic palletizer for corrugated cardboard processing achieves stable clamping and handling of corrugated cardboard through the cooperation of mechanical clamping and negative pressure adsorption, and can automatically support in case of accidental loosening, effectively ensuring palletizing efficiency, as detailed below; 1. Equipped with grippers, a negative pressure box, and suction cups, the grippers can laterally hold the bundled corrugated cardboard as they move. Simultaneously, during the movement of the grippers, the elastic telescopic rod and guide block drive the negative pressure box to move downwards, ensuring the suction cups are tightly sealed against the top of the corrugated cardboard. By drawing negative pressure inside the negative pressure box, the sealing slide plate moves upwards on the inner side of the box, allowing the suction cups to adhere to the corrugated cardboard. This achieves multi-mode fixation of the corrugated cardboard and improves stability during palletizing and handling.

[0016] 2. It is equipped with a suction cup, a first sealing plug and a second sealing plug. As the sealing slide moves upward, the first sealing plug and the second sealing plug inside the suction cup can move upward synchronously, so that a negative pressure adsorption is generated between the suction cup and the corrugated cardboard. Due to the setting of the first sealing plug and the second sealing plug, the negative pressure chamber inside each suction cup works independently, avoiding the failure of the whole to adsorb due to air leakage from a single suction cup.

[0017] 3. Equipped with a sealing slide plate and an anti-detachment plate, when the suction cup becomes loose during handling, causing adsorption failure, the sealing slide plate will move further upward under negative pressure. When the sealing slide plate moves to its highest point inside the negative pressure box, the connecting pipe and the air supply pipe are connected, allowing the negative pressure box to instantly draw gas from inside the piston cylinder through the air supply pipe. This causes the piston plate and pull rod to move inside the piston cylinder, which in turn drives the anti-detachment plate to rotate instantly through the transmission action of the rack and pinion gears. This anti-detachment plate then supports the loose corrugated cardboard underneath, providing secondary auxiliary support and preventing the corrugated cardboard from falling. This further ensures the safety of palletizing and handling. In addition, by setting up an elastic bladder and a cleaning nozzle, impurities at the bottom of the suction cup can be automatically blown away when the anti-detachment plate resets, reducing the possibility of subsequent adsorption failure and further improving adsorption reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the gripper and negative pressure box of the present invention; Figure 3 This is a schematic diagram of the suction cup mounting structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a cross-sectional view of the negative pressure box of the present invention; Figure 6 This is a schematic cross-sectional view of the suction cup structure of the present invention; Figure 7 This is a schematic diagram of the piston cylinder and anti-detachment plate installation structure of the present invention; Figure 8 This is a schematic diagram of the installation structure of the impurity removal nozzle of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Conveyor frame; 2. Robotic arm; 3. Mounting frame; 4. Hydraulic cylinder; 5. Gripper; 6. Guide column; 7. Negative pressure box; 8. Sealing slide plate; 801. Connecting air hole; 9. Suction cup; 10. Elastic telescopic rod; 11. Guide block; 12. Inner cylinder; 13. First sealing plug; 14. Slide rod; 15. Second sealing plug; 16. Adaptor pipe; 17. Air supply pipe; 18. Piston cylinder; 19. Piston plate; 20. Pull rod; 21. Movable frame; 22. Rack; 23. Anti-detachment plate; 24. Gear; 25. Elastic bladder; 26. Impurity removal nozzle. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Most existing automatic palletizing machines for corrugated cardboard boxes use a single clamp for handling and palletizing. However, corrugated cardboard has certain cavities, and to avoid damage to the cardboard, excessive clamping force must be avoided. This makes slippage easy during handling. To solve this technical problem, this example discloses the following technical content. Please refer to [link / reference]. Figures 1-6 As shown; an automatic palletizing machine for corrugated cardboard box processing includes a conveyor frame 1 for conveying corrugated cardboard, a robotic arm 2 is provided on the outer side of the conveyor frame 1, and a mounting frame 3 is fixedly installed at the end of the robotic arm 2. Hydraulic cylinders 4 are symmetrically fixedly installed on the mounting frame 3, and grippers 5 are fixedly connected to the output end of the hydraulic cylinders 4. A negative pressure box 7 is elastically lifted and installed on the mounting frame 3, and a negative pressure pump is connected to the upper end of the negative pressure box 7 through a pipe. A sealing slide plate 8 is provided on the inner side of the negative pressure box 7, and an air conveying component is provided on the sealing slide plate 8. Suction cups 9 are uniformly and fixedly installed through the lower end of the negative pressure box 7.

[0022] The gripper 5 is slidably mounted on the mounting frame 3, and an elastic telescopic rod 10 is fixedly mounted on the gripper 5. A guide post 6 is fixedly mounted on the negative pressure box 7, and the guide post 6 and the mounting frame 3 are connected by a spring elastic lifting connection. Guide blocks 11 are symmetrically fixedly mounted on both sides of the negative pressure box 7. The end of the elastic telescopic rod 10 is attached to the inclined surface of the guide block 11. When the two grippers 5 approach each other, the elastic telescopic rod 10 slides along the inclined surface of the guide block 11, driving the negative pressure box 7 to move downward. During the downward movement of the negative pressure box 7, the lower end of the suction cup 9 is sealed and attached to the surface of the cardboard. A first seal is slidably mounted on the inner side of the suction cup 9. A first sealing plug 13 is connected to a suction cup 9 by a spring. An inner cylinder 12 is fixedly installed on the upper end of the first sealing plug 13. The inner cylinder 12 and the suction cup 9 are fitted with a through hole at the upper end. When the sealing slide plate 8 moves upward inside the negative pressure box 7, the first sealing plug 13 moves upward inside the suction cup 9. A second sealing plug 15 is slidably installed on the inner side of the inner cylinder 12 and the first sealing plug 13. A slide rod 14 is fixedly installed on the upper end of the second sealing plug 15. The slide rod 14 is slidably installed inside the inner cylinder 12. A spring is connected between the inner cylinder 12 and the slide rod 14.

[0023] The conveyor frame 1 can transport stacked and bundled single sets of corrugated cardboard. The robotic arm 2 moves the mounting frame 3 above the single set of cardboard, and then the hydraulic cylinder 4 is activated to control the movement of the gripper 5, allowing for lateral clamping of the bundled cardboard. Simultaneously, during the movement of the gripper 5, its outer elastic telescopic rod 10 slides along the inclined surface of the guide block 11, driving the negative pressure box 7 to elastically move downwards. This causes the suction cup 9 to seal tightly against the top of the corrugated cardboard. The negative pressure inside the negative pressure box 7 ensures a tight seal. The sliding plate 8 moves upward inside the negative pressure box 7. As the sealing sliding plate 8 moves upward, the first sealing plug 13 and the second sealing plug 15 inside the suction cup 9 also move upward, so that negative pressure adsorption is generated between the suction cup 9 and the corrugated cardboard. Due to the setting of the first sealing plug 13 and the second sealing plug 15, the negative pressure chamber inside each suction cup 9 acts independently, avoiding the failure of the whole to adsorb due to air leakage from a single suction cup 9. This allows the suction cup 9 to stably adsorb the corrugated cardboard, thereby realizing multi-mode fixation of the corrugated cardboard and improving the stability during the stacking and handling process.

[0024] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. Existing automatic palletizing machines for corrugated cardboard boxes lack a secondary support mechanism for slippage protection, which reduces palletizing efficiency in the event of accidental slippage. To further solve this technical problem, this example discloses the following technical content: Figures 5-9 As shown; the upper outer side of the negative pressure box 7 is connected to the adapter pipe 16, the outer side of the gripper 5 is fixedly installed with the piston cylinder 18, and when the sealing slide plate 8 moves up to the highest position in the negative pressure box 7, the upper part of the negative pressure box 7 and the piston cylinder 18 are connected through the air supply assembly. The inner side of the piston cylinder 18 is sealed and slidably connected with the piston plate 19, and the piston plate 19 is fixedly installed with the pull rod 20. The outer side of the gripper 5 is rotatably installed with the anti-detachment plate 23, and the pull rod 20 drives the anti-detachment plate 23 to rotate through the transmission assembly during the lifting and lowering process.

[0025] The gas delivery assembly includes a connecting air hole 801 on the sealing plate 8. When the sealing plate 8 moves to its highest position inside the negative pressure box 7, the connecting air hole 801 and the lower end of the adapter pipe 16 are connected. The upper and lower ends of the adapter pipe 16 are connected to the inside of the negative pressure box 7. The inner side of the sealing plate 8 has a cavity that communicates with the connecting air hole 801. The inner cavity of the sealing plate 8 is connected to the piston cylinder 18 through the gas delivery pipe 17. When the air pressure inside the piston cylinder 18 decreases, the piston plate 19 moves elastically downward inside the piston cylinder 18. The piston plate 19 is fixedly connected to the movable frame 21 by the pull rod 20.

[0026] The transmission assembly includes a rack 22 fixedly mounted on the movable frame 21, and a gear 24 fixedly mounted on the shaft of the anti-detachment plate 23. During the downward movement of the movable frame 21, the rack 22 and the gear 24 mesh to drive the anti-detachment plate 23 to rotate. Initially, the anti-detachment plate 23 is parallel to the lower outer side of the gripper 5. After rotation, the anti-detachment plate 23 adheres to and supports the corrugated cardboard below. An elastic bladder 25 is fixedly connected between the gripper 5 and the anti-detachment plate 23. A cleaning nozzle 26 is fixedly mounted on the gripper 5. The elastic bladder 25 and the cleaning nozzle 26 are connected by a pipe. The nozzle of the cleaning nozzle 26 faces the lower end of the suction cup 9. When the elastic bladder 25 is squeezed, air is blown towards the lower end of the suction cup 9 through the cleaning nozzle 26.

[0027] When suction cup 9 becomes loose during handling, causing complete suction failure, the corrugated cardboard easily slides between the two grippers 5. At this time, the sealing slide plate 8 will move further upward under the negative pressure. When the sealing slide plate 8 moves to its highest position inside the negative pressure box 7, the connecting air hole 801 and the adapter pipe 16 on the sealing slide plate 8 are connected. At this time, the negative pressure box 7 and the piston cylinder 18 are connected through the connecting air hole 801, the adapter pipe 16 and the air supply pipe 17, so that the negative pressure box 7 can instantly draw gas from the inside of the piston cylinder 18 through the air supply pipe 17, causing the piston plate 19 and the pull rod 20 to move inside the piston cylinder 18. At the same time, the pull rod 20 will move by moving... The frame 21 drives the rack 22 to move downward, causing the rack 22 and gear 24 to mesh. Through the transmission action of the two, the anti-detachment plate 23 is driven to rotate instantly and support the loose corrugated cardboard below, achieving secondary auxiliary support and preventing the corrugated cardboard from falling. This further ensures the safety of stacking and handling. When the anti-detachment plate 23 rotates, it works with the gripper 5 to stretch the elastic bladder 25, allowing the elastic bladder 25 to draw in air through the impurity removal nozzle 26. When the anti-detachment plate 23 returns to its original position, it squeezes the elastic bladder 25, causing the drawn-in air to be discharged through the impurity removal nozzle 26 and blown towards the suction cup 9, preventing impurities remaining on the surface of the suction cup 9 from causing adsorption failure again.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic stacking machine for corrugated carton processing, comprising a conveying frame (1) for conveying corrugated paperboard, and a mechanical arm (2) is arranged on the outer side of the conveying frame (1), and a mounting frame (3) is fixedly installed at the end of the mechanical arm (2), and a hydraulic cylinder (4) is symmetrically fixedly installed on the mounting frame (3), and a clamping jaw (5) is fixedly connected to the output end of the hydraulic cylinder (4), characterized in that, The mounting bracket (3) is elastically and vertically mounted with a negative pressure box (7), and the upper end of the negative pressure box (7) is connected to a negative pressure pump through a pipe. The inner side of the negative pressure box (7) is sealed and slidably equipped with a sealing slide plate (8). The sealing slide plate (8) is equipped with an air supply component. The lower end of the negative pressure box (7) is uniformly and fixedly mounted with a suction cup (9). The upper outer side of the negative pressure box (7) is connected with a transfer pipe (16). The outer side of the gripper (5) is fixedly mounted with a piston cylinder (18). When the sealing slide plate (8) moves up to the highest point in the negative pressure box (7), the upper part of the negative pressure box (7) and the piston cylinder (18) are connected through the air supply component. The inner side of the piston cylinder (18) is sealed and slidably connected with a piston plate (19). The piston plate (19) is fixedly mounted with a pull rod (20). The outer side of the gripper (5) is rotatably mounted with an anti-detachment plate (23). During the lifting and lowering process of the pull rod (20), the anti-detachment plate (23) is driven to rotate through the transmission component.

2. The automatic stacking machine for corrugated box processing according to claim 1, characterized in that: The gripper (5) is slidably mounted on the mounting frame (3), and an elastic telescopic rod (10) is fixedly mounted on the gripper (5). A guide post (6) is fixedly mounted on the negative pressure box (7), and the guide post (6) and the mounting frame (3) are connected by a spring elastic lifting connection. Guide blocks (11) are symmetrically fixedly mounted on both sides of the negative pressure box (7). The end of the elastic telescopic rod (10) is attached to the inclined surface of the guide block (11). When the two grippers (5) are close together, the elastic telescopic rod (10) slides along the inclined surface of the guide block (11) and drives the negative pressure box (7) to move down.

3. An automatic palletizing machine for corrugated cardboard box processing according to claim 1, characterized in that: During the downward movement of the negative pressure box (7), the lower end of the suction cup (9) is sealed and adhered to the surface of the cardboard. The inner side of the suction cup (9) is sealed and slidably installed with a first sealing plug (13), and a spring is connected between the first sealing plug (13) and the suction cup (9). The upper end of the first sealing plug (13) is fixedly installed with an inner cylinder (12). The inner cylinder (12) and the through hole opened at the upper end of the suction cup (9) are fitted with a clearance. When the sealing slide plate (8) moves upward inside the negative pressure box (7), the first sealing plug (13) moves upward inside the suction cup (9).

4. An automatic palletizing machine for corrugated cardboard box processing according to claim 3, characterized in that: The inner cylinder (12) and the first sealing plug (13) are slidably sealed with a second sealing plug (15), and a slide rod (14) is fixedly installed on the upper end of the second sealing plug (15). The slide rod (14) is slidably installed through the inner cylinder (12), and a spring is connected between the inner cylinder (12) and the slide rod (14).

5. An automatic palletizing machine for corrugated cardboard box processing according to claim 1, characterized in that: The gas delivery assembly includes a connecting air hole (801) on the sealing slide plate (8), and when the sealing slide plate (8) moves to the highest position inside the negative pressure box (7), the connecting air hole (801) and the lower end of the adapter pipe (16) are connected, and the upper and lower ends of the adapter pipe (16) are connected to the inside of the negative pressure box (7). The inner side of the sealing slide plate (8) is provided with a cavity that communicates with the connecting air hole (801), and the internal cavity of the sealing slide plate (8) is connected to the piston cylinder (18) through the gas delivery pipe (17).

6. An automatic palletizing machine for corrugated cardboard box processing according to claim 5, characterized in that: When the air pressure inside the piston cylinder (18) decreases, the piston plate (19) moves elastically downward inside the piston cylinder (18), and the piston plate (19) is fixedly connected to the movable frame (21) by the pull rod (20).

7. An automatic palletizing machine for corrugated cardboard box processing according to claim 6, characterized in that: The transmission assembly includes a rack (22) fixedly mounted on the movable frame (21), and a gear (24) fixedly mounted on the shaft of the anti-detachment plate (23). During the downward movement of the movable frame (21), the rack (22) and the gear (24) mesh to drive the anti-detachment plate (23) to rotate.

8. An automatic palletizing machine for corrugated cardboard box processing according to claim 7, characterized in that: The anti-detachment plate (23) is initially positioned parallel to the lower outer side of the gripper (5), and after rotation, the anti-detachment plate (23) is attached to and supported under the corrugated cardboard.

9. An automatic palletizing machine for corrugated cardboard box processing according to claim 1, characterized in that: An elastic bladder (25) is fixedly connected between the gripper (5) and the anti-detachment plate (23), and a cleaning nozzle (26) is fixedly installed on the gripper (5). The elastic bladder (25) and the cleaning nozzle (26) are connected by a pipe. At the same time, the nozzle of the cleaning nozzle (26) faces the lower end of the suction cup (9). When the elastic bladder (25) is squeezed, air is blown to the lower end of the suction cup (9) through the cleaning nozzle (26).

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