An automatic stacking device for corrugated carton production

Abstract

The present application relates to the technical field of corrugated carton production, and specifically discloses an automatic stacking device for corrugated carton production, which comprises a stand column and a ground rail, the stand column is installed on the top of the ground rail, a loading platform is slidably installed on one side of the stand column, two forks are slidably installed on the top of the loading platform, a vertical rod is installed on each of the four corner parts of the loading platform, a first moving frame is slidably installed among the plurality of vertical rods, a correction mechanism is arranged on each side of the first moving frame, and a protection mechanism is arranged on the top of the first moving frame. In the present application, the correction mechanism can automatically correct the paper box stack in two directions during the transfer process when the paper box stack is placed on the loading platform of the stacking machine, so as to eliminate the position deviation of the paper box stack on the loading platform, avoid the paper box stack scratching the shelf components when the stacking machine accesses the tray, and prevent the transfer inertia from causing the stack to slip and dislocate; the present application can ensure the accurate storage of the paper box stack in the warehouse and improve the overall stability of the paper box stack during long-term storage in the three-dimensional warehouse shelf.

Description

Technical Field

[0001] This invention relates to the field of corrugated cardboard box production technology, and more specifically to an automatic palletizing device for corrugated cardboard box production. Background Technology

[0002] Corrugated cardboard boxes are widely used in the packaging and logistics industries. After being nailed and glued, the boxes are typically folded into a flat state and then stacked onto pallets to form complete stacks. Automated storage and transportation (AS / RS) are then used for centralized storage and transfer. In existing production models, independent palletizing equipment is generally used to stack the folded corrugated cardboard boxes layer by layer onto pallets. The completed pallets are then transported via conveyor lines to the AS / RS receiving station, where stacker cranes automatically load and shelve the cardboard stacks placed on top of the pallets, facilitating their retrieval and outbound handling.

[0003] Stacker cranes are the core handling equipment in automated storage and retrieval systems (AS / RS), relying on forks to pick up, place, and transfer pallets. Existing stacker cranes can only perform walking, lifting, and fork extension / retraction movements according to preset coordinates; the loading platform itself lacks the function of automatically correcting the position of the pallets and the stacks of cartons above them. When the stack of cartons transported from the receiving station is offset relative to the center of the pallet, or when the pallet, after being lifted onto the loading platform by the forks, further slips due to the stacker crane's acceleration / deceleration vibrations and inertia, causing the center of gravity of the cartons to deviate from the center of the loading platform, the stacker crane can only identify extreme faults such as exceeding limits or exceeding width limits; it cannot actively push the cartons to the correct position or center them.

[0004] For folded corrugated cardboard box stacks, the stack relies on the outer wrapping film for restraint, which has weak anti-slip ability. If the cardboard box stack is tilted on the loading platform, the cardboard boxes are very likely to scrape against the shelf uprights and beams when the stacker crane places the pallets to the shelf positions; in severe cases, it can cause the stack to slip further, scatter and collapse, which not only damages the cardboard boxes, but also blocks the aisles of the automated warehouse, causes equipment collision failures, and forces the production line to stop. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic palletizing device for corrugated cardboard box production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An automatic palletizing device for corrugated cardboard box production includes a column and a ground rail. The column is slidably mounted on top of the ground rail. A loading platform is slidably mounted on one side of the column. Two forks are slidably mounted on top of the loading platform. Vertical rods are installed at the four corners of the loading platform. A first movable frame is slidably mounted between the multiple vertical rods. Correction mechanisms for automatically correcting the position of the cardboard box stacks placed on top of the loading platform are provided on both sides of the first movable frame. A protective mechanism for shielding and protecting against debris falling from above the aisle is provided on top of the first movable frame.

[0007] Optionally, a first sliding groove is provided on one side of the outer wall of each of the four vertical rods, and a first slider is installed inside each of the four first sliding grooves. The end of each of the four first sliders away from the first sliding groove is connected to the first movable frame.

[0008] Optionally, two fixing blocks are installed on the outer wall of each of the four vertical bars on the other side. The outer wall of each fixing block near the loading platform is equipped with a laser rangefinder sensor for automatically detecting the tilt of the carton stack edge.

[0009] Optionally, the correction mechanism includes grooves on the outer walls of both sides of the first movable frame, a lead screw is rotatably installed inside each of the two grooves, a second movable frame is threaded onto the outer walls of both lead screws, a second sliding groove is provided on the inner walls of both sides of the two second movable frames, and a second slider is installed inside each of the two second sliding grooves.

[0010] Optionally, the ends of the two second sliders away from the second slide groove are jointly mounted with a movable seat. A movable rod is slidably mounted inside the movable seat. A rack is mounted on the outer wall of the movable rod away from the first movable frame. A first motor is mounted on the top of the movable seat. A gear is mounted on the output end of the first motor. The gear meshes with the rack.

[0011] Optionally, a rubber block is installed at the bottom of the movable rod, and a rectangular groove is formed in the bottom of the movable rod and the interior of the rubber block. A blower head is rotatably installed inside the rectangular groove, and the blower head is connected to an externally preset hot air blower through a preset pipe inside the movable rod.

[0012] Optionally, an abutment block is installed at the top of the movable rod, and a second electromagnet is preset inside the abutment block.

[0013] Optionally, the protective mechanism includes a mounting frame installed on top of the first movable frame. A take-up roller is rotatably mounted inside the mounting frame, and a protective net is wound around the outer wall of the take-up roller. A first through slot is provided on the top of the mounting frame, and a rectangular plate is connected to the end of the protective net away from the take-up roller through the first through slot.

[0014] Optionally, two first electromagnets are installed inside the rectangular plate, and two protrusions are installed on the outer wall of the rectangular plate near the first movable frame.

[0015] Optionally, the mounting bracket has a second through groove on the outer wall near the first movable bracket, which is connected to the first through groove. A cutter is slidably installed inside the second through groove, and a rectangular strip is installed at one end of the cutter outside the second through groove. Both ends of the rectangular strip are connected to the mounting bracket by springs.

[0016] The beneficial effects of this invention are: 1. This invention utilizes a correction mechanism to automatically center and correct cardboard stacks during transport on the stacker crane's loading platform. By driving the moving rods downwards and positioning them against limit switches on both sides of the stack, and then coordinating with the lead screws to synchronously push the moving rods back and forth, the skewed cardboard stack is automatically pushed to a preset center position on the loading platform, achieving centered positioning. This eliminates the problem of cardboard stack misalignment on the loading platform, preventing the stack from scraping against rack components or slipping due to transport inertia when the stacker crane retrieves pallets. It ensures accurate storage of cardboard stacks, improves the overall stability of cardboard stacks during long-term storage in automated warehouses, reduces the occurrence of scattering, collapse, and damage to folded corrugated cardboard stacks, lowers the need for manual entry into aisles to straighten stacks, and enhances the continuity and safety of the entire automated corrugated cardboard palletizing and warehousing production line.

[0017] 2. In this invention, during the process of transferring the cardboard stack to the top of the loading platform using forks, multiple laser rangefinders on the same side can automatically identify and detect the tilt of the cardboard stack. If the tilt of the cardboard stack exceeds the preset range, in order to avoid the problem of the cardboard stack with the tilt problem continuing to be transferred to the automated warehouse for stacking, which may easily cause the risk of falling, the loading platform and the column can be moved to the predetermined position by the background control system, and then the forks can be controlled to send the cardboard stack from the top of the loading platform to the pre-planned problematic cardboard stack area. This achieves the effect of automatically removing such cardboard stacks with suspicious problems and improves the safety of the cardboard stack during the stacking process.

[0018] 3. In this invention, if the cardboard stacks to be stacked have a small amount of impurities on their surface after being wrapped with a film, after the cardboard stacks are transferred to the top of the loading platform, the blowers inside the two rectangular slots are controlled to rotate together to a position close to the cardboard stack. Then, the externally preset hot air blower is started. As the two first motors drive the two moving rods to slowly move downwards and reset, the two blowers can discharge hot air to both sides of the cardboard stack. Combined with the two lead screws driving the two second moving frames to move back and forth, the blowing range of the two blowers can be increased, thus facilitating... The impurities adhering to the outer walls and top of the cardboard box stack are blown away and cleaned. Then, the cardboard box stack is moved outward to the top of the relevant equipment in the external loading area using forks. After the equipment in the loading area drives the cardboard box stack to rotate 90 degrees, the cardboard box stack is transferred back to the top of the loading platform by the forks. At this time, the above two steps of cleaning the impurities on the outer walls of the cardboard box stack with the blowers are repeated to clean the impurities adhering to the other two outer walls of the cardboard box stack. This achieves the effect of thoroughly cleaning the surface of the cardboard box stack and reduces the pollution of the cardboard box storage area caused by the impurities adhering to the surface of the cardboard box stack.

[0019] 4. In this invention, simultaneously using two blowers to blow air onto the exterior of the cardboard box stack allows for the evaporation of moisture from the inner wall of the film using the gentle hot air emitted from both blowers. This reduces the adverse effects of moisture on the dryness of the cardboard boxes, protects their strength, and prevents slippage caused by dampness, which could lead to the stack tilting to one side, collapsing, or falling. This further improves the stability of the cardboard box stack during stacking. Furthermore, after the cardboard box stack is secured with the film, its surface is prone to slow rebound and relaxation due to diurnal temperature variations and storage time. Using the aforementioned two blowers to apply moderate hot air causes slight thermal shrinkage of the film, ensuring it adheres tightly to the cardboard box stack and reducing gaps between the film and the box body. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of an automatic palletizing device for corrugated cardboard box production proposed in this invention. Figure 2 This is a schematic diagram of the structure of the present invention excluding the columns and ground track; Figure 3 This is a schematic diagram of the cargo platform in this invention; Figure 4 This is a schematic diagram of the corrective and protective mechanisms in this invention; Figure 5 This is a schematic diagram of the structure of the first movable frame in this invention; Figure 6 This is a schematic diagram of the mounting bracket in this invention; Figure 7 This is a schematic diagram of the structure in this invention where the take-up roller and the mounting frame are separated; Figure 8 This is a cross-sectional view of the mounting bracket in this invention; Figure 9 This is a schematic diagram of the structure of the second movable frame and the movable rod in this invention; Figure 10 This is a schematic diagram of the structure of the gear and rack in this invention; Figure 11 This is a schematic diagram of the structure of the bottom end of the movable rod in this invention.

[0022] In the diagram: 1. Column; 2. Ground rail; 3. Cargo platform; 4. Forklift; 5. Vertical rod; 6. First moving frame; 7. Second moving frame; 8. Moving rod; 9. Laser rangefinder sensor; 10. First slide rail; 11. First slider; 12. Mounting frame; 13. Groove; 14. Take-up roller; 15. Rectangular plate; 16. First electromagnet; 17. Protrusion; 18. First through groove; 19. Protective net; 20. Rectangular strip; 21. Cutter; 22. Spring; 23. Lead screw; 24. Second slide rail; 25. Moving seat; 26. Rack; 27. Rectangular groove; 28. Blower head; 29. ​​Rubber block; 30. Second slider; 31. First motor; 32. Gear; 33. Abutment block; 34. Second electromagnet. Detailed Implementation

[0023] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0024] Reference Figures 1-11 An automatic palletizing device for corrugated cardboard box production includes a column 1 and a ground rail 2. The column 1 is slidably mounted on top of the ground rail 2. A loading platform 3 is slidably mounted on one side of the column 1. Two forks 4 are slidably mounted on the top of the loading platform 3. Vertical rods 5 are installed at the four corners of the loading platform 3. A first movable frame 6 is slidably mounted between the multiple vertical rods 5. Correction mechanisms for automatically correcting the position of the cardboard box stack placed on top of the loading platform 3 are provided on both sides of the first movable frame 6. A protective mechanism for shielding and protecting against debris falling from above the aisle is provided on the top of the first movable frame 6. In this embodiment, the column 1 is the vertical support body of the stacker crane, and a vertical lifting guide rail is fixed to the side wall of the column 1 as a guide reference for the lifting and lowering movement of the loading platform 3. The loading platform 3 moves up and down along the lifting guide rail of the column 1 using pre-set guide wheels on its outer side. The ground rail 2 is laid on the floor of the automated warehouse aisle, serving as the track reference for the horizontal movement of the stacker crane. The stacker crane moves back and forth within the aisle by rolling along the ground rail 2 using pre-set wheels at its bottom. The loading platform 3 is a lifting platform assembly that carries pallets and goods, slidably mounted on the lifting guide rail of the column 1, and driven by a lifting mechanism to achieve vertical lifting. Telescopic forks 4 are installed above the loading platform 3, serving as the direct loading and unloading mechanism for goods. During operation, pallets along with stacked cartons are placed on the forks 4 and move vertically along with the loading platform 3.

[0025] As a technical optimization of the present invention, each of the four vertical rods 5 has a first sliding groove 10 on one outer wall. A first slider 11 is installed inside each of the four first sliding grooves 10, and the end of each of the four first sliders 11 away from the first sliding groove 10 is connected to a first movable frame 6. A first linear motor is pre-installed inside each of the four first sliding grooves 10. The four first linear motors can drive the four first sliders 11 to move up and down within their respective first sliding grooves 10, thereby causing the first movable frame 6 to move up and down directly on the four vertical rods 5 for adjustment.

[0026] As a technical optimization of this invention, two fixing blocks are installed on the outer wall of each of the four vertical rods 5 on the other side. A laser rangefinder 9 for automatically detecting the tilt of the carton stack edge is installed on the outer wall of each fixing block near the loading platform 3. The laser rangefinder 9 is a prior art model SICKDT35-B15251 laser rangefinder. This sensor achieves non-contact distance measurement based on the time-of-flight principle, covering a measurement range of 0.05m to 15m. It has an IO-Link data interface and can output the distance value of the measured object in real time. The sensor has a Class 1 laser rating and an IP67 protection rating, making it suitable for the dusty working environment of automated warehouses where corrugated boxes are stacked after production. It can stably measure the distance to the vertical surface of the carton stack covered with stretch film. The upper and lower sets of laser rangefinders 9 respectively collect the horizontal distance from the lower and upper parts of the carton stack to the sensors. The controller calculates the tilt angle of the stack based on the difference between the vertical height and the horizontal distance, achieving the effect of automatically detecting the tilt state of the carton stack.

[0027] As an optimized technical solution of the present invention, the correction mechanism includes grooves 13 formed on the outer walls of both sides of the first movable frame 6. A lead screw 23 is rotatably mounted inside each of the two grooves 13. A second movable frame 7 is threaded onto the outer wall of each of the two lead screws 23. A second sliding groove 24 is formed on the inner wall of each of the two second movable frames 7. A second slider 30 is installed inside each of the two second sliding grooves 24. Two second motors are pre-installed inside the first movable frame 6. The output ends of the two second motors are respectively connected to one end of each of the two lead screws 23, thereby driving the two lead screws 23 to rotate within the corresponding grooves 13, and consequently driving the two second movable frames 7 to move back and forth on both sides of the first movable frame 6 for adjustment. A second linear motor is pre-installed inside each of the two second sliding grooves 24, and the two second linear motors can drive the two second sliders 30 to move back and forth within the corresponding second sliding grooves 24.

[0028] As a technical optimization of the present invention, a movable base 25 is jointly installed at the ends of the two second sliders 30 away from the second slide groove 24. A movable rod 8 is slidably installed inside the movable base 25. A rack 26 is installed on the outer wall of the movable rod 8 away from the first movable frame 6. A first motor 31 is installed on the top of the movable base 25. A gear 32 is installed at the output end of the first motor 31, and the gear 32 meshes with the rack 26. During the movement of the two second sliders 30, the movable base 25 can be driven to move back and forth inside the second movable frame 7 for adjustment. After the first motor 31 is started, it can drive the gear 32 to rotate, which in turn drives the rack 26 and the movable rod 8 meshing with the gear 32 to move up and down inside the movable base 25, thereby adjusting the vertical position of the movable rod 8.

[0029] As a technical optimization of the present invention, a rubber block 29 is installed at the bottom end of the movable rod 8. A rectangular groove 27 is formed together at the bottom end of the movable rod 8 and inside the rubber block 29. A blower head 28 is rotatably installed inside the rectangular groove 27. The blower head 28 is connected to an externally preset hot air blower through a pipe preset inside the movable rod 8. A third motor is preset on one side of the outer wall of the movable rod 8. The output end of the third motor is connected to the rotating part of one end of the blower head 28, thereby driving the blower head 28 to rotate and adjust inside the rectangular groove 27, and adjusting the blowing angle of the blower head 28.

[0030] As a technical optimization of the present invention, a stop block 33 is installed at the top of the moving rod 8, and a second electromagnet 34 is preset inside the stop block 33.

[0031] As an optimized technical solution of the present invention, the protective mechanism includes a mounting frame 12 installed on the top of the first movable frame 6. A take-up roller 14 is rotatably mounted inside the mounting frame 12, and a protective net 19 is wound onto the outer wall of the take-up roller 14. A first through groove 18 is provided on the top of the mounting frame 12, and a rectangular plate 15 is connected to one end of the protective net 19 away from the take-up roller 14 through the first through groove 18. A fourth motor is preset on one side of the outer wall of the mounting frame 12, and the output end of the fourth motor is connected to one end of the take-up roller 14, thereby driving the take-up roller 14 to rotate and adjust inside the mounting frame 12, thereby driving the protective net 19 to be wound and unwound.

[0032] As a technical optimization of the present invention, two first electromagnets 16 are installed inside the rectangular plate 15, and two protrusions 17 are installed on the outer wall of the rectangular plate 15 near the first movable frame 6.

[0033] As a technical optimization of the present invention, the outer wall of the mounting frame 12 near the first movable frame 6 is provided with a second through groove communicating with the first through groove 18. A cutter 21 is slidably installed inside the second through groove. A rectangular strip 20 is installed at one end of the cutter 21 outside the second through groove. Both ends of the rectangular strip 20 are connected to the mounting frame 12 by springs 22. By applying a pushing force to the rectangular strip 20, the cutter 21 can be moved inside the second through groove toward the first through groove 18, so as to cut the protective net 19 under certain circumstances. After the pushing force of the rectangular strip 20 is released, the cutter 21 can be moved back to its original position inside the second through groove by the elastic reset of the two springs 22.

[0034] In this invention, when the user uses the device, firstly, the two first motors 31 are started together, driving the two gears 32 to rotate synchronously. At the same time, the two racks 26 and the moving rod 8 move upward inside the moving seat 25 to ensure that there are no obstructions on both sides of the loading platform 3. Then, the loading platform 3 and the column 1 are moved to the designated loading position on the top of the ground rail 2. Then, the two forks 4 are moved and extended on the top of the loading platform 3 and inserted into the bottom of the cardboard stack that has been pre-stacked on the top of the pallet and wrapped with film. This allows the pallet and the cardboard stack on top of it to reset as the forks 4 move and be placed on the top of the loading platform 3. Finally, after the loading platform 3 and the column 1 move to the designated placement position on the top of the ground rail 2, the loading platform 3 is moved upward to the front of the placement area. Then, the forks 4 extend again to place the pallet and the cardboard stack on top of it into the designated placement position, thus achieving the effect of automatically stacking corrugated cardboard boxes into the automated warehouse after production.

[0035] During the process of transferring the cardboard stack to the top of the loading platform 3 using the forks 4, laser rangefinders 9 are installed on the outer wall of one side of each of the four vertical bars 5. These sensors allow the cardboard stack to enter from either end of the loading platform 3 and be placed on top of it. Simultaneously, multiple laser rangefinders 9 on the same side can automatically detect and identify the tilt of the cardboard stack. If the tilt exceeds a preset range, to prevent the stack from being further transferred into the automated warehouse and potentially falling, the control system can move the loading platform 3 and the uprights 1 to a predetermined position. Then, the forks 4 can be controlled to feed the cardboard stack from the top of the loading platform 3 to a pre-planned problematic cardboard stack area. This achieves automatic removal of such questionable cardboard stacks, improving safety during stacking.

[0036] If the cardboard stack is found to be without problems after being detected by multiple laser rangefinders 9, it is then transferred to the top of the loading platform 3. To ensure the stability of the cardboard stack during long-term stacking in the automated warehouse, it is necessary to ensure that the cardboard stack does not shift during placement. During the transfer process, the cardboard stack is placed on the top of the loading platform 3, and the two first motors 31 are controlled to drive the corresponding gears 32 to rotate. This causes the two racks 26 to move the corresponding moving rods 8 downwards and reset. The two moving rods 8 are located on both sides of the cardboard stack. Then, the two second sliders 30 inside the two second moving frames 7 are controlled to move towards the first moving frame 6. This causes the outer walls of the two moving rods 8 to move until they abut against the two sides of the cardboard stack. Then, the two lead screws 23 are controlled to rotate and drive the two second moving frames 7 to move back and forth on both sides of the first moving frame 6. This allows the two moving rods 8 to move synchronously, pushing and correcting both ends of the cardboard stack to ensure that the cardboard stack is accurately positioned on the top of the loading platform 3, thereby improving the stability of the cardboard stack when placed in the automated warehouse.

[0037] If the cardboard box stacks to be stacked have a small amount of impurities on their surface after being wrapped in film, or if a small amount of moisture exists on the inner wall of the film due to long-term storage of the cardboard boxes, in order to prevent the impurities on the surface of the cardboard box stacks from falling around and contaminating the cardboard box stacking area during the transfer and stacking process, and to prevent the moisture on the inner wall of the film from affecting the dryness of the cardboard boxes, after the cardboard box stacks are transferred to the top of the loading platform 3, the blowers 28 inside the two rectangular slots 27 are controlled to rotate together to a position close to the cardboard box stacks. Then, the external preset hot air blower is started. As the two first motors 31 drive the two moving rods 8 to move downwards and slowly reset, the two blowers 28 can exhaust hot air to both sides of the cardboard box stacks. This works in conjunction with the two lead screws 23 to drive the two second moving rods 8 to move downwards and reset. The back-and-forth movement of the moving frame 7 increases the blowing range of the two blowers 28, making it easier to blow away and clean the impurities attached to the outer walls and top of the cardboard stack. After cleaning the impurities attached to the outer walls of one side of the cardboard stack, the two moving rods 8 can be controlled to move upward again. With the help of the forks 4, the cardboard stack is moved outward to the top of the relevant equipment in the external loading area. After the equipment in the loading area drives the cardboard stack to rotate 90 degrees, the forks 4 then drive the cardboard stack to be transferred back to the top of the loading platform 3. At this time, the steps of cleaning the impurities on the outer walls of the cardboard stack by the two blowers 28 are repeated to clean the impurities attached to the other two sides of the cardboard stack, achieving a comprehensive cleaning effect on the surface of the cardboard stack and reducing the pollution of the cardboard storage area caused by the impurities attached to the surface of the cardboard stack.

[0038] At the same time, when the two blowers 28 are used to blow on the outside of the cardboard box stack, the gentle hot air discharged from the two blowers 28 can be used to evaporate the moisture on the inner wall of the film, reducing the adverse effects of moisture on the dryness of the cardboard box, protecting the strength of the cardboard box, and also preventing the cardboard box from slipping after getting wet, which could cause the cardboard box stack to tilt to one side or even collapse and fall, further improving the stability of the cardboard box stack during the stacking process; In addition, after the cardboard box stack is fixed by wrapping with film, the surface is prone to slow rebound and relaxation due to the temperature difference between day and night and the storage time. The two blowers 28 mentioned above use moderate hot air to bake the film, which causes slight thermal shrinkage and close to the cardboard box stack, reducing the gap between the film and the box. This reduces the relative sliding between layers during transportation (stacking, stopping, acceleration and deceleration of the stacker), prevents the top layer of film from bulging and shifting in windy conditions, and causes the film to slightly melt and bond in the overlapping area of ​​the film. The entire film forms a continuous wrapping layer, which is not easy to be hooked open from the overlap seam. The end of the film is not easy to curl up or be hooked and torn by the stacker fork 4 or the rack beam, reducing the residual film falling off and adhering to the surface of the fork 4. Furthermore, the film at the corners of cardboard stacks is prone to being suspended and easily torn by the sharp corners of the boxes after being stretched. Hot air allows the film to adhere evenly to the contours of the stack, reducing localized stress concentration and lowering the probability of film tearing. After ordinary stretch film is wrapped, it continues to rebound and the binding force gradually decreases during the storage period of several days. Appropriate heat setting can lock in the tension generated by pre-stretching. When stored statically on high-rise shelves for a long time, it maintains the binding constraint for a longer period of time. During the process of protecting the cardboard stacks with film, a piece of film will remain after the wrapping machine cuts it, which is the biggest source of snagging risk in the aisle. Hot air can cause the film tail to shrink and adhere tightly to the stack, eliminating the long strip of film that is suspended and greatly reducing the probability of snagging on stacker cranes, shelves, and fire pipes.

[0039] During use, impurities or film debris inevitably adhere to the surfaces of the two forks 4. To prevent the forks 4 from carrying impurities to the cardboard stacking area, the two second moving frames 7 can be controlled to move together to directly above one of the forks 4, and the two moving rods 8 can be controlled to move downwards until the rubber blocks 29 at the bottom of the two moving rods 8 abut against the forks 4. Then, the two blowers 28 can be controlled to rotate downwards so that the two blowers 28 can blow hot air to the top of the forks 4. In conjunction with the moving seats 25 inside the two second moving frames 7, the moving rods 8 move back and forth, so that the two rubber blocks 29 can clean and remove the film debris attached to the top of the forks 4 while rubbing back and forth with the top of the forks 4. The other fork 4 can repeat the above cleaning steps, thereby improving the cleanliness of the forks 4 during use and facilitating the transfer and stacking of cardboard stacks.

[0040] During the operation of a stacker crane, workers need to clean the aisle and check the condition of related equipment and components during the crane's downtime. To prevent cardboard debris, broken stretch film, pallet wood chips, or cardboard corner pieces from falling downwards and adversely affecting the working environment of personnel below, it is advisable to clean the aisle before performing these tasks. Figure 1 As shown, first, control the loading platform 3 to move upward to a suitable height, then control the column 1 and the loading platform 3 to move together to the left at the top of the ground rail 2 until the loading platform 3 moves to the leftmost position of the aisle. Ensure that the left end of the first moving frame 6 is below one of the metal fixed frames or metal crossbars in the automated warehouse. Then, control the two first electromagnets 16 inside the rectangular plate 15 to be energized and started. Then, control the two second moving frames 7 to move together to the left on both sides of the first moving frame 6. Ensure that the two abutment blocks 33 move to the bottom of the two protrusions 17, then control the two first motors 31 to drive the two moving rods 8 to extend upward together, so that the top of the two abutment blocks 33 abuts against the bottom of the two protrusions 17. And fix them to the two protrusions 17 by magnetic attraction with the second electromagnets 34 set on the top of the two abutment blocks 33. Then, control the winding roller 14 to rotate, driving the protective net 19 to rotate on the winding roller 14. The surface slowly unfolds, and as the two moving rods 8 continue to move upward, they push the two protrusions 17 and the rectangular plate 15 upward together, thereby causing the protective net 19 to extend upward from the inside of the mounting frame 12 until the top of the rectangular plate 15 abuts against the bottom of the metal fixing frame or metal crossbar. Then, it is magnetically fixed with the two first electromagnets 16, thus completing the limit fixation of one end of the protective net 19. Subsequently, the column 1 and the loading platform 3 are controlled to move slowly to the right at the top of the ground rail 2, so that the protective net 19 slowly unfolds horizontally inside the tunnel until the column 1 and the loading platform 3 move to the rightmost end of the ground rail 2. At this time, the horizontally unfolded protective net 19 is located inside the tunnel and can catch the cardboard box debris, broken wrapping film, pallet wood chips or cardboard box corners that may fall downward, providing a shielding and protection effect for the personnel working below, ensuring that the personnel can carry out related work normally inside the tunnel.

[0041] If a stack of cartons falls downwards above the protective netting 19, the netting can simultaneously buffer and shield it, preventing injury to personnel working below. After all personnel have evacuated from the aisle, to prevent the protective netting 19 from being affected by the weight of the cartons, which could cause the winding roller 14 to be pulled by a large force and indirectly affect the use of the stacker, the two moving rods 8 can be controlled to move downwards, causing the abutment block 33 to move downwards to a position flush with the rectangular strip 20. As the two second moving frames 7 move towards the winding roller 14, the two abutment blocks 33 press against the rectangular strip 20, causing the cutter 21 to move from the inside of the second through slot to the inside of the first through slot 18 and cut the protective netting 19, thereby reducing the tension on the stacker and ensuring that the subsequent use of the stacker is not affected, thus improving the protection effect of the stacker.

[0042] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic palletizing device for corrugated cardboard box production, comprising a column (1) and a ground rail (2), characterized in that, The column (1) is slidably installed on the top of the ground rail (2). A loading platform (3) is slidably installed on one side of the column (1). Two forks (4) are slidably installed on the top of the loading platform (3). Vertical rods (5) are installed at the four corners of the loading platform (3). A first moving frame (6) is slidably installed between multiple vertical rods (5). A correction mechanism is provided on both sides of the first moving frame (6) for automatically correcting the position of the cardboard box stack placed on the top of the loading platform (3). A protective mechanism is provided on the top of the first moving frame (6) for shielding and protecting debris falling from above the aisle.

2. The automatic palletizing device for corrugated cardboard box production according to claim 1, characterized in that, Each of the four vertical rods (5) has a first groove (10) on one side of its outer wall. Each of the four first grooves (10) has a first slider (11) installed inside it. The end of each of the four first sliders (11) away from the first groove (10) is connected to the first movable frame (6).

3. An automatic palletizing device for corrugated cardboard box production according to claim 1, characterized in that, Two fixing blocks are installed on the outer wall of the other side of each of the four vertical bars (5). The outer wall of each fixing block near the loading platform (3) is equipped with a laser range sensor (9) for automatically detecting the tilt of the carton stack edge.

4. An automatic palletizing device for corrugated cardboard box production according to claim 1, characterized in that, The correction mechanism includes grooves (13) on the outer walls of both sides of the first movable frame (6), and screw rods (23) are rotatably installed inside the two grooves (13). The outer walls of the two screw rods (23) are threaded with second movable frames (7). The inner walls of both sides of the two second movable frames (7) are provided with second sliding grooves (24), and the inner walls of the two second sliding grooves (24) are provided with second sliders (30).

5. An automatic palletizing device for corrugated cardboard box production according to claim 4, characterized in that, The two second sliders (30) are mounted together on a movable seat (25) at one end away from the second slide groove (24). A movable rod (8) is slidably mounted inside the movable seat (25). A rack (26) is mounted on the outer wall of the movable rod (8) away from the first movable frame (6). A first motor (31) is mounted on the top of the movable seat (25). A gear (32) is mounted on the output end of the first motor (31). The gear (32) meshes with the rack (26).

6. An automatic palletizing device for corrugated cardboard box production according to claim 5, characterized in that, A rubber block (29) is installed at the bottom of the moving rod (8). A rectangular groove (27) is opened in the bottom of the moving rod (8) and the interior of the rubber block (29). A blower head (28) is rotatably installed inside the rectangular groove (27). The blower head (28) is connected to an externally preset hot air blower through a preset pipe inside the moving rod (8).

7. An automatic palletizing device for corrugated cardboard box production according to claim 6, characterized in that, The top of the moving rod (8) is equipped with an abutment block (33), and a second electromagnet (34) is preset inside the abutment block (33).

8. An automatic palletizing device for corrugated cardboard box production according to claim 1, characterized in that, The protective mechanism includes a mounting frame (12) installed on the top of the first movable frame (6). A take-up roller (14) is rotatably mounted inside the mounting frame (12). A protective net (19) is wound around the outer wall of the take-up roller (14). A first through slot (18) is opened on the top of the mounting frame (12). A rectangular plate (15) is connected to one end of the protective net (19) away from the take-up roller (14) through the first through slot (18).

9. An automatic palletizing device for corrugated cardboard box production according to claim 8, characterized in that, Two first electromagnets (16) are installed inside the rectangular plate (15), and two protrusions (17) are installed on the outer wall of the rectangular plate (15) near the first movable frame (6).

10. An automatic palletizing device for corrugated cardboard box production according to claim 8, characterized in that, The mounting bracket (12) has a second through groove on the outer wall of the side near the first movable bracket (6) that communicates with the first through groove (18). A cutter (21) is slidably installed inside the second through groove. A rectangular strip (20) is installed at one end of the cutter (21) outside the second through groove. Both ends of the rectangular strip (20) are connected to the mounting bracket (12) by springs (22).

Images