An automated coated paper stacking and palletizing equipment and method

Abstract

This invention discloses an automated stacking and palletizing equipment and method for coated paper, relating to the field of coated paper storage equipment. The invention includes: a shelf, a bottom box panel, multiple middle box panels, a top box panel, a forklift, an upper rubber plate, a lower rubber plate, a lifter, an airflow device, and an electrically controlled valve. The bottom box panel is fixed to the bottom of the shelf, and the middle and top box panels are lifted and lowered via the lifter. Each box panel has an air chamber, and corresponding surfaces have perforated areas. The upper rubber plate on the forklift and the lower rubber plate at the bottom of the box panel both have air holes communicating with the perforated areas, and their surfaces are roughened. The airflow device supplies air to the air chambers through pipelines and electrically controlled valves. This invention reduces the adhesive connection between the coated paper rolls and the bearing surface through a dry, hot airflow. The elasticity and rough surface design of the rubber plates buffer pressure and prevent deformation, achieving stable stacking and low-damage handling of the coated paper rolls.

Description

Technical Field

[0001] This invention relates to the field of coated paper storage equipment, and more particularly to an automated coated paper stacking and palletizing equipment and method. Background Technology

[0002] Due to the adhesive nature of the coating layer, coated paper rolls face numerous technical challenges during storage and stacking. When directly supported by traditional shelving, prolonged contact between the roll and the supporting surface can lead to adhesive bonding due to environmental humidity and pressure. Upon removal, this can cause the end face to tear or become jagged, severely impacting product quality. Furthermore, while existing solutions using perforated mesh support plates can reduce the adhesive area through increased contact area, the contact between the mesh structure and the roll end face is a localized hard contact. Under stacking pressure, this can easily cause compression deformation and wrinkling of the end face.

[0003] Therefore, when coated paper rolls are stored and retrieved on shelves, how to reduce the adhesive bond between the coated paper rolls and the shelves, while avoiding deformation and wrinkles caused by pressure on the end face of the coated paper, has become a technical problem that needs to be solved. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] This invention provides an automated coated paper stacking and palletizing equipment, including a shelf, and a bottom box plate, multiple middle box plates, and a top box plate arranged sequentially from bottom to top inside the shelf. The bottom box plate is fixedly installed at the bottom of the shelf, and a lifter for vertically raising and lowering the middle box plates and the top box plate is arranged inside the shelf.

[0006] The bottom box, middle box, and top box each have an internal air cavity. The top surface of the bottom box, the bottom surface of the top box, and the top and bottom surfaces of the middle box each have a perforated area that communicates with their respective air cavities. A fork plate is positioned on the top surface of the bottom box and the middle box. The fork plate includes a grid section aligned with the perforated area. An upper rubber plate is fixedly installed on the upper side of the fork plate. The upper rubber plate has multiple upper air vents that are vertically connected to the grid section. The top surface of the upper rubber plate is roughened. A roll of coated paper is placed on the upper side of the upper rubber plate.

[0007] A lower rubber plate is fixedly installed on the bottom surface of the middle box panel and the top box panel. The lower rubber plate has multiple lower vent holes that are vertically connected to the grille section. The bottom surface of the lower rubber plate is a rough surface.

[0008] An airflow device is also installed on the side of the shelf. Multiple electrically controlled valves are fixedly installed on the shelf. The airflow device is connected to the air inlet of the electrically controlled valve through an air supply pipe. The air outlet of each electrically controlled valve is independently connected to an air chamber through an airflow hose.

[0009] As a preferred technical solution of the device of the present invention: a travel groove is provided on the inner side of the shelf, and guide structures that are movably installed at the position of the travel groove are provided on both sides of the middle box plate and the top box plate.

[0010] As a preferred technical solution of the device of the present invention: the top surface of the bottom box plate and the middle box plate is provided with a limiting protrusion ring located outside the upper opening of the mesh area, and the inner side of the limiting protrusion ring is provided with an inner ring inclined surface. The bottom side of the fork plate ring is provided with a chamfered position that matches the inner ring inclined surface, and the fork plate is provided with a fork groove, the horizontal height of which is higher than the limiting protrusion ring.

[0011] As a preferred technical solution of the device of the present invention: the fork plate is provided with a plurality of side screw holes located on the periphery of the grid section, the outer edge of the upper rubber plate is provided with a recessed part, the recessed part is provided with a first mounting hole, the first mounting hole is aligned with the side screw holes and the mounting bolts are tightened.

[0012] As a preferred technical solution of the device of the present invention: the distribution range of the upper air outlet of the upper rubber plate matches the bottom surface range of the coated paper roll, and the distribution range of the lower air outlet of the lower rubber plate matches the top surface range of the coated paper roll.

[0013] As a preferred technical solution of the device of the present invention: the bottom surface of the middle box plate and the top box plate is provided with a plurality of bottom screw holes located around the mesh area. The lower rubber plate is provided with a plurality of second mounting holes aligned with the bottom screw holes, and the second mounting holes are aligned with the bottom screw holes for mounting bolts.

[0014] As a preferred technical solution of the device of the present invention: the airflow device has a built-in airflow dehumidification module and a heating control module.

[0015] This invention designs a method for controlling an automated coated paper stacking and palletizing equipment, including the following steps:

[0016] Step 1: Fix the bottom box panel to the bottom of the shelf, and use the lifter to position all the middle and top boxes at a high position inside the shelf.

[0017] Step 2: Use a forklift to move the forklift carrying the coated paper roll to the top of the bottom box plate, aligning the grid part of the forklift with the mesh area of ​​the bottom box plate, and then place the forklift steadily on the top surface of the bottom box plate.

[0018] Step 3: Once the coated paper rolls on the upper side of the bottom box plate are full, the lowest middle box plate is driven to descend vertically by the lifting device until the lower rubber plate on the bottom of the middle box plate contacts the top surface of the coated paper rolls on the upper side of the bottom box plate.

[0019] Step 4: Use a forklift to place the forklift carrying the coated paper roll onto the top surface of the middle box plate, aligning the grid section of the forklift with the mesh area of ​​the middle box plate.

[0020] Step 5: Place the coated paper rolls layer by layer from low to high. When the coated paper rolls on the upper side of any layer of middle box plate are full, drive the adjacent middle box plate above it to descend through the corresponding lifting device, so that the lower rubber plate on the bottom surface of the adjacent middle box plate above contacts the top surface of the coated paper roll below.

[0021] Step 6: After the coated paper roll on the upper side of the highest position middle box plate is placed, the top box plate is driven to descend vertically by the lifting device, so that the lower rubber plate on the bottom of the top box plate contacts the top surface of the coated paper roll on the upper side of the highest position middle box plate.

[0022] Step 7: When it is necessary to remove the coated paper roll, open the corresponding electric control valves of the adjacent box plates on the upper and lower sides of the target coated paper roll. The airflow generated by the airflow device enters the air chamber of the corresponding box plate. The airflow acts on the upper and lower end faces of the coated paper roll through the mesh area, grid section, upper air outlet and lower air outlet.

[0023] Step 8: After the ventilation reaches the preset time, close the corresponding electronic control valve to stop the airflow supply, and drive the adjacent middle box plate or top box plate on the upper side of the target coated paper roll to move vertically upward through the lifting device to form a gap that facilitates the removal operation.

[0024] Step 9: Insert the forklift forks into the corresponding positions on the fork plate, and smoothly lift the fork plate and the coated paper roll placed on it to remove it from its original position, thus completing the removal of the coated paper roll.

[0025] Compared with existing technologies, the beneficial effects of this invention are:

[0026] This invention provides a dry, hot airflow through an airflow device, which acts directionally on the upper and lower end faces of the coated paper roll via the air chamber, mesh area, grid section, and air holes in the rubber plate. This effectively reduces adhesive adhesion caused by humidity and pressure. Furthermore, the elastic material and rough surface design of the upper and lower rubber plates increase the friction between the roll and the bearing surface to ensure stability, buffer excessive compression pressure to avoid deformation and wrinkling caused by hard contact, and quickly and evenly disperse the airflow during ventilation, significantly reducing the end face damage rate of the coated paper when it is removed from the shelf. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention.

[0028] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0029] Figure 3 for Figure 2 A magnified structural diagram of section B in the middle.

[0030] Figure 4 This is a schematic diagram of the disassembly and separation of the fork plate, upper rubber plate, lower rubber plate and shelf in this invention.

[0031] Figure 5 This is a schematic diagram of the structure of the box panel, its lifting device, and the ventilation component in this invention.

[0032] Figure 6 This is a schematic diagram of the fork plate in this invention.

[0033] Figure 7 This is a schematic diagram of the structure of the upper rubber plate in this invention.

[0034] Figure 8 This is a schematic diagram of the structure of the lower rubber plate in this invention.

[0035] The components are as follows: 1-Shelf, 101-Stroke groove; 2-Bottom box plate; 3-Middle box plate, 301-Air cavity, 302-Mesh area, 303-Limiting protrusion ring, 3031-Inner ring bevel, 304-Bottom screw hole, 305-Guide structure; 4-Top box plate; 5-Fork plate, 501-Grid section, 502-Fork groove, 503-Side screw hole, 504-Chamfered position; 6-Upper rubber plate, 601-Upper rough surface, 602-Upper air outlet, 603-Recessed part, 604-First mounting hole; 7-Coated paper roll; 8-Lower rubber plate, 801-Lower rough surface, 802-Lower air outlet, 803-Second mounting hole; 9-Lifter; 10-Airflow device; 11-Air supply pipe; 12-Electrically controlled valve; 13-Airflow hose; 14-Bolt. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] Example 1: This invention designs an automated stacking and palletizing equipment for coated paper rolls. This equipment is mainly used for the automated stacking, palletizing, and storage of coated paper rolls, such as... Figure 1 , Figure 4 The core components include a shelf 1, multiple layers of boxes (bottom box 2, multiple middle boxes 3, top box 4), forklifts 5, upper rubber plate 6, lower rubber plate 8, lifting device 9, airflow device 10, electric control valve 12, and supporting pipelines, etc. All components work together to achieve stable storage and low-damage handling of coated paper rolls 7. The specific structural configuration is as follows:

[0038] like Figure 1 , Figure 3 , Figure 5 The shelf 1 forms the main frame of the equipment, with a travel groove 101 on its inner side for guiding the middle box panel 3 and the top box panel 4 during lifting and lowering. An airflow device 10 is configured on the side of the shelf 1, and multiple electrically controlled valves 12 are fixedly installed to control the on / off and distribution of airflow.

[0039] A bottom box 2, multiple middle box 3, and a top box 4 are arranged sequentially from bottom to top. The bottom box 2 is fixed to the bottom of the shelf 1. The middle box 3 and the top box 4 can be vertically raised and lowered along the travel groove 101 by the lifter 9 (guide structures 305 are movably installed on both sides of the travel groove 101 to ensure smooth lifting).

[0040] Each box panel has an air cavity 301 inside. The top surface of the bottom box panel 2 and the middle box panel 3, and the bottom surface of the middle box panel 3 and the top box panel 4 are all provided with a mesh area 302 that communicates with the air cavity 301. The mesh areas 302 of all box panels are aligned vertically to ensure vertical airflow.

[0041] The top surface of the bottom box plate 2 and the middle box plate 3 is provided with a limiting protrusion ring 303 located outside the upper opening of the mesh area 302, and the inner side of the protrusion ring is provided with an inner ring slope 3031 for positioning the fork plate 5. The bottom surface of the middle box plate 3 and the top box plate 4 is provided with multiple bottom screw holes 304 located outside the mesh area 302 for installing the lower rubber plate 8.

[0042] like Figure 2 , Figure 3 , Figure 4 , Figure 6 The fork plate 5 is placed on the top surface of the bottom box plate 2 and the middle box plate 3, and is the direct load-bearing component of the coated paper roll 7. Its structure includes:

[0043] Grille section 501: Aligned with mesh area 302 to ensure airflow.

[0044] Fork slot 502: for forklift forks to insert into, the horizontal height of which is higher than the limit protrusion ring 303, to facilitate fork insertion.

[0045] Side screw hole 503: Located on the periphery of the grid part 501, it is used to connect with the upper rubber plate 6 by bolt 14.

[0046] Chamfer 504: Located at the bottom of the ring side, it cooperates with the inner ring inclined surface 3031 of the limiting protrusion ring 303 to achieve precise positioning of the fork plate 5.

[0047] like Figure 2 , Figure 4 , Figure 7 The upper rubber plate 6 is fixed to the upper side of the fork plate 5. The top surface is a rough surface 601, and multiple upper air vents 602 are opened that are vertically connected to the grid part 501 (the distribution range matches the bottom surface range of the coated paper roll 7). The outer edge of the upper rubber plate 6 is provided with a recessed part 603. The recessed part 603 has a first mounting hole 604, which is aligned with the side screw hole 503 of the fork plate 5 and fastened by bolts 14.

[0048] like Figure 2 , Figure 4 , Figure 8The lower rubber plate 8 is fixed to the bottom surface of the middle box plate 3 and the top box plate 4. The bottom surface of the lower rubber plate 8 is a rough surface 801. The lower rubber plate 8 has multiple lower air vents 802 that are vertically connected to the mesh area 302 (the distribution range matches the top surface range of the coated paper roll 7). The lower rubber plate 8 has multiple second mounting holes 803, which are aligned with the bottom screw holes 304 of the middle box plate 3 and the top box plate 4 and fastened with bolts 14.

[0049] like Figure 2 , Figure 7 , Figure 8 The upper rough surface 601 and the lower rough surface 801 can make the drying airflow spread evenly along the surface, reduce the curing and adhesion between the end face of the coated paper roll 7 and the rubber plate, and facilitate low-loss separation of the coated paper roll.

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 5 The airflow device 10 has a built-in dehumidification module and heating control module, which can provide dry airflow with a certain amount of heat. The airflow device 10 is connected to the air inlet of the electrically controlled valve 12 through the air supply pipe 11. The air outlet of each electrically controlled valve 12 is independently connected to the air chamber 301 of a box panel through the airflow hose 13 (the air chambers 301 of the bottom box panel 2, each middle box panel 3, and the top box panel 4 are all independently controlled). The electrically controlled valve 12 is used to individually control the airflow interruption of the corresponding box panel's air chamber 301, so as to achieve precise airflow supply to the target area.

[0051] like Figure 2 , Figure 4 , Figure 5 The lifting device 9 is installed inside the shelf 1 and is used to drive the middle box plate 3 and the top box plate 4 to rise and fall along the travel groove 101, adjusting the box plate spacing to accommodate the placement and removal of the coated paper roll 7.

[0052] Example 2: The working principle of the device of the present invention is as follows:

[0053] I. The procedure for placing the coated paper roll is as follows:

[0054] 1. In the initial state, the bottom box panel 2 is fixed to the bottom of the shelf 1, and all the middle box panels 3 and top box panels 4 are in a high position under the action of the lifting device 9, maintaining a sufficient distance from the bottom box panel 2 to facilitate forklift operation.

[0055] 2. The forklift moves the fork plate 5 carrying the coated paper roll 7 to the top of the bottom box plate 2. The chamfered part 504 of the fork plate 5 cooperates with the inner ring inclined surface 3031 of the limiting protrusion ring 303 of the bottom box plate 2 to accurately align with the mesh area 302 of the bottom box plate 2, ensuring that the grid part 501 of the fork plate 5 is aligned with the mesh area 302.

[0056] 3. The forklift slowly lowers the fork plate 5 until the fork plate 5 is in complete contact with the top surface of the bottom box plate 2. At this time, the fork groove 502 of the fork plate 5 is higher than the limit protrusion ring 303, and the forks can be easily pulled out.

[0057] 4. After the coated paper rolls 7 are filled on the upper side of the bottom box plate 2 as described above, the lifting device 9 connected to the lowest middle box plate 3 is activated, which drives the lowest middle box plate 3 to descend along the travel groove 101 until the lower rubber plate 8 on its bottom surface completely contacts the top surface of the coated paper rolls 7 on the upper side of the bottom box plate 2.

[0058] 5. When the forklift places the coated paper roll 7 on the upper side of the lowest middle box plate 3, the fork plate 5 should also be aligned with the limiting protrusion ring 303 of the middle box plate 3 to ensure that the grid part 501 is aligned with the mesh area 302 of the middle box plate 3.

[0059] 6. After the top of the lowest middle box panel 3 is filled, the adjacent middle box panel 3 above it is lowered by the lifter 9, and the lower rubber plate 8 abuts against the top surface of the coated paper roll 7 of that layer. The placement of all middle box panels 3 is completed layer by layer according to this logic.

[0060] 7. After the top middle box plate 3 is filled with coated paper rolls 7, the lifting device 9 connected to the top box plate 4 drives the top box plate 4 to descend, so that the lower rubber plate 8 on the bottom side of the top box plate 4 abuts against the top surface of the coated paper rolls 7 on the top middle box plate 3, completing the overall stacking.

[0061] (ii) The procedure for removing the coated paper roll is as follows:

[0062] 1. When removing the paper, follow the principle of "high first, low last" and prioritize removing the high-position coated paper roll 7.

[0063] 2. Before removal, open the electric control valves 12 of the adjacent box plates on the upper and lower sides of the target coated paper roll 7 through the control system (for example, when removing the top roll, only open the electric control valves 12 corresponding to the top box plate 4 and the highest middle box plate 3, and keep the other electric control valves 12 closed).

[0064] 3. The dry hot airflow generated by the airflow device 10 enters the air chamber 301 of the corresponding box plate through the air supply pipe 11, the open electric control valve 12, and the airflow hose 13. Then, it passes through the mesh area 302, the grid part 501 of the fork plate 5, the upper air outlet 602 of the upper rubber plate 6, and the lower air outlet 802 of the lower rubber plate 8, and acts on the upper and lower end faces of the coated paper roll 7.

[0065] 4. After the air supply reaches the preset time, the electric control valve 12 closes and the airflow stops. At this time, the top box plate 4 or middle box plate 3 adjacent to the upper side of the target drum moves upward along the stroke groove 101 under the action of the lifting device 9, disengaging from the top surface of the drum and forming a picking gap.

[0066] 5. Insert the forklift forks into the fork slots 502 of the fork plate 5 (since the horizontal height of the fork slots 502 is higher than that of the limiting protrusion ring 303, the insertion is smooth). Lift the fork plate 5 and the coated paper roll 7 upwards until the fork plate 5 is completely separated from the limiting protrusion ring 303, and then pull them out to complete the removal operation.

[0067] 6. When the lower layer coated paper roll 7 is taken out, repeat steps 2-5 above. Simply open the corresponding upper and lower side panel electric control valves 12.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated coated paper stacking and palletizing equipment, characterized in that: Includes a shelf (1), and the inner perimeter of the shelf (1) is arranged from bottom to top with a bottom box panel (2), multiple middle box panels (3), and a top box panel (4); The bottom box plate (2) is fixedly installed at the bottom of the shelf (1), and the inner side of the shelf (1) is equipped with a lifter (9) for driving the middle box plate (3) and the top box plate (4) to rise and fall vertically. The bottom box (2), middle box (3) and top box (4) are all provided with air cavities (301). The top surface of the bottom box (2), the bottom surface of the top box (4) and the top and bottom surfaces of the middle box (3) are provided with mesh areas (302) that communicate with their respective air cavities (301). The bottom box plate (2) and the middle box plate (3) are positioned on the top surface of the fork plate (5). The fork plate (5) includes a grid part (501) aligned with the mesh area (302). An upper rubber plate (6) is fixedly installed on the upper side of the fork plate (5). The upper rubber plate (6) has multiple upper air holes (602) that are vertically connected to the grid part (501). The top surface of the upper rubber plate (6) is an upper rough surface (601). A coated paper roll (7) is placed on the upper side of the upper rubber plate (6). The bottom surface of the middle box plate (3) and the top box plate (4) is fixedly installed with a lower rubber plate (8). The lower rubber plate (8) has multiple lower ventilation holes (802) that are vertically connected to the grille part (501). The bottom surface of the lower rubber plate (8) is a lower rough surface (801). The shelf (1) is also equipped with an airflow device (10) on the side. The shelf (1) is fixedly installed with multiple electric control valves (12). The airflow device (10) is connected to the air inlet of the electric control valve (12) through an air supply pipe (11). The air outlet of each electric control valve (12) is independently connected to an air chamber (301) through an airflow hose (13).

2. The automated coated paper stacking and palletizing equipment according to claim 1, characterized in that: The shelf (1) has a travel groove (101) on its inner side, and the middle box plate (3) and the top box plate (4) are equipped with guide structures (305) that are movably installed at the travel groove (101) on both sides.

3. The automated coated paper stacking and palletizing equipment according to claim 1, characterized in that: The bottom box plate (2) and the middle box plate (3) are provided with a limiting protrusion ring (303) located on the outer periphery of the upper opening of the mesh area (302). The inner side of the limiting protrusion ring (303) is provided with an inner ring inclined surface (3031); The bottom of the fork plate (5) on the ring side is provided with a chamfer (504) that matches the inner ring inclined surface (3031). The fork plate (5) is provided with a fork groove (502), and the horizontal height of the fork groove (502) is higher than that of the limiting protrusion ring (303).

4. The automated coated paper stacking and palletizing equipment according to claim 1, characterized in that: The fork plate (5) has multiple side screw holes (503) located around the periphery of the grille section (501). The upper rubber plate (6) has a recessed part (603) on its outer edge. The recessed part (603) has a first mounting hole (604). The first mounting hole (604) is aligned with the side screw hole (503) and the mounting bolt (14) is tightened.

5. The automated coated paper stacking and palletizing equipment according to claim 1, characterized in that: The distribution range of the upper air outlet (602) of the upper rubber plate (6) matches the bottom surface range of the coated paper roll (7), and the distribution range of the lower air outlet (802) of the lower rubber plate (8) matches the top surface range of the coated paper roll (7).

6. The automated coated paper stacking and palletizing equipment according to claim 1, characterized in that: The bottom surfaces of the middle box plate (3) and the top box plate (4) are provided with a plurality of bottom screw holes (304) located around the mesh area (302). The lower rubber plate (8) is provided with a plurality of second mounting holes (803) aligned with the bottom screw hole (304), and the second mounting holes (803) and the bottom screw hole (304) are aligned and bolts (14) are installed.

7. The automated coated paper stacking and palletizing equipment according to claim 1, characterized in that: The airflow device (10) has a built-in airflow dehumidification module and a heating control module.

8. A method for controlling an automated coated paper stacking and palletizing equipment, characterized in that, An automated coated paper stacking and palletizing equipment according to any one of claims 1 to 7 includes the following steps: Step 1: Fix the bottom box panel (2) to the bottom of the shelf (1), and use the lifter (9) to position all the middle box panels (3) and top box panels (4) at a high position inside the shelf (1); Step 2: Use a forklift to move the fork plate (5) carrying the coated paper roll (7) to the top of the bottom box plate (2), aligning the grid part (501) of the fork plate (5) with the mesh area (302) of the bottom box plate (2), and then place the fork plate (5) stably on the top surface of the bottom box plate (2). Step 3: When the coated paper rolls (7) on the upper side of the bottom box plate (2) are full, the lowest middle box plate (3) is driven to descend vertically by the lifting device (9) until the lower rubber plate (8) on the bottom surface of the middle box plate (3) contacts the top surface of the coated paper rolls (7) on the upper side of the bottom box plate (2). Step 4: Using a forklift, place the fork plate (5) carrying the coated paper roll (7) on the top surface of the middle box plate (3) so that the grid part (501) of the fork plate (5) is aligned with the mesh area (302) of the middle box plate (3). Step 5: Place the coated paper rolls (7) layer by layer from low to high. When the coated paper rolls (7) on the upper side of any layer of middle box plate (3) are full, drive the adjacent middle box plate (3) above it to descend through the corresponding lifting device (9) so that the lower rubber plate (8) on the bottom surface of the adjacent middle box plate (3) above it contacts the top surface of the coated paper roll (7) below. Step 6: After the coated paper roll (7) on the upper side of the highest middle box plate (3) is placed, the top box plate (4) is driven to descend vertically by the lifting device (9) so that the lower rubber plate (8) on the bottom surface of the top box plate (4) contacts the top surface of the coated paper roll (7) on the upper side of the highest middle box plate (3). Step 7: When it is necessary to remove the coated paper roll (7), open the electric control valve (12) corresponding to the adjacent box plates on the upper and lower sides of the target coated paper roll (7). The airflow generated by the airflow device (10) enters the air chamber (301) of the corresponding box plate. The airflow acts on the upper and lower end faces of the coated paper roll (7) through the mesh area (302), the grid part (501), the upper air outlet (602) and the lower air outlet (802). Step 8: After the ventilation reaches the preset time, close the corresponding electric control valve (12) to stop the air supply, and drive the middle box plate (3) or top box plate (4) adjacent to the upper side of the target coated paper roll (7) to move vertically upward through the lifting device (9) to form a gap that is easy to remove. Step 9: Insert the forklift forks into the corresponding positions on the fork plate (5), and lift the fork plate (5) and the coated paper roll (7) placed on it smoothly to remove it from its original position, thus completing the removal operation of the coated paper roll (7).

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