Continuous stacking and blanking machine for corrugated cartons

Abstract

The utility model relates to the field of carton stacking equipment, and discloses a continuous stacking and blanking machine for corrugated cartons, which comprises a conveying belt, the left side wall of the conveying belt is fixedly connected with a workbench, the top of the workbench is fixedly connected with an L-shaped support plate, and the top of the workbench and the bottom wall of the L-shaped support plate are provided with pushing mechanisms; and the pushing mechanism comprises a first protection box, a first motor, two first fixing blocks, two second fixing blocks, two first sliding blocks and two joint blocks, and the right side wall of the first protection box is fixedly connected to the left side wall of the L-shaped supporting plate. By means of the material pushing mechanism, the problem that the stacking efficiency is greatly reduced due to the fact that the stacking shape is irregular, follow-up carrying and storage are affected can be solved, the second supporting plate is fixedly connected to the outer sides of the top ends of the four second connecting rods, and therefore the stacking speed and efficiency are effectively improved, the equipment adjusting time is shortened, and the labor intensity of workers is lowered. The overall production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box palletizing equipment, and in particular to a continuous palletizing and unloading machine for corrugated cardboard boxes. Background Technology

[0002] Corrugated boxes are a widely used packaging product, made from corrugated cardboard through processes such as die-cutting, creasing, stapling, or gluing. Continuous stacking and unloading machines are automated equipment used in the corrugated box manufacturing industry. They are mainly used to continuously stack and unload the produced corrugated boxes. In logistics warehouses, they are used to stack and store corrugated boxes, facilitating the handling and management of goods.

[0003] When cartons are conveyed to the palletizing position, they cannot be precisely positioned and pushed, leading to positional deviations. Cartons may not be placed accurately in the designated positions on the pallet. During transport, cartons may collide with each other or with other parts of the equipment, resulting in uneven stacks. This affects subsequent handling and storage, requiring frequent stops of the conveyor line for manual sorting and placement of cartons, which significantly reduces palletizing efficiency. During continuous palletizing, the pallet can only be at a fixed height, limiting the stacking height to the initial capacity of the pallet. This restricts the equipment's applicability as the number of stacked layers increases. As the number of layers increases, the center of gravity of the carton stack gradually rises. When the center of gravity exceeds a certain range, the entire stack becomes unstable, potentially tipping over during handling or under external force, causing damage to cartons and product loss. This increases manual labor intensity, prolongs equipment downtime, and impacts production continuity and efficiency. Utility Model Content

[0004] The main purpose of this utility model is to provide a continuous palletizing and unloading machine for corrugated cartons, which can effectively solve the problems of uneven stacking, which affect subsequent handling and storage, require frequent stops of the conveyor line, and require manual sorting and placement of cartons. This greatly reduces the efficiency of palletizing and may cause the cartons to tip over, resulting in damage to the cartons and product loss. It also increases the intensity of manual labor, prolongs equipment downtime, and affects the continuity and efficiency of production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a continuous stacking and unloading machine for corrugated cardboard boxes, including a conveyor belt, a workbench fixedly connected to the left side wall of the conveyor belt, an L-shaped support plate fixedly connected to the top of the workbench, and a pushing mechanism provided on the top of the workbench and the bottom wall of the L-shaped support plate.

[0006] The pushing mechanism includes: a first protective box, a first motor, two first fixed blocks, two second fixed blocks, two first sliders, and two connecting blocks. The right side wall of the first protective box is fixedly connected to the left side wall of the L-shaped support plate. The bottom wall of the first motor is fixedly connected to the inside of the first protective box. A rotating rod is fixedly connected to the output end of the first motor. The left and right ends of the rotating rod are rotatably connected to the inside of the two first fixed blocks. The upper side walls of the two first fixed blocks are fixedly connected to the front bottom wall of the L-shaped support plate. First pulleys are fixedly connected to the outer sides of the left and right ends of the rotating rod. Belts are provided inside the two first pulleys.

[0007] Furthermore, the front sidewalls of the two second fixing blocks are fixedly connected to the left and right sides of the rear sidewall of the L-shaped support plate. The interior of the two second fixing blocks is rotatably connected to a first connecting rod. The outer sides of the left and right ends of the first connecting rod are fixedly connected to second pulleys. The rear sides of the two belts are located inside the two second pulleys. The two first sliders are located on the outer bottom of the two belts. The two connecting blocks are fixedly connected to the bottom part of the two belts inside the first sliders by bolts. The tops of the two first sliders are equipped with top covers.

[0008] Furthermore, a first support plate is fixedly connected to the inner sidewall of the two first sliders, a second connecting rod is connected through the inside of the first support plate, a second support plate is fixedly connected to the outer top of the four second connecting rods, a second slider is fixedly connected to both the left and right sides of the second support plate, the inside of the two second sliders is located on the outer top of the belt, and a first push plate is fixedly connected to the bottom of the four second connecting rods.

[0009] Furthermore, a fixed frame is fixedly connected to the left side of the conveyor belt, an adjusting plate is fixedly connected to the inner rear side wall of the fixed frame, a quantity detector is fixedly connected to the inner top of the fixed frame, support rods are fixedly connected to the front and rear sides of the bottom of the workbench, a control panel is fixedly connected to the left side wall of the L-shaped support plate, and a fixed seat is fixedly connected to the bottom of the workbench.

[0010] Furthermore, a device box is fixedly connected to the top front side of the workbench, a material discharge port is opened inside the front side of the workbench, a baffle is fixedly connected to the inside front side of the device box, and first hydraulic rods are provided inside the left and right sides of the device box, with positioning plates fixedly connected to the telescopic ends of the four first hydraulic rods.

[0011] Furthermore, a second protective box is provided on both the left and right sides of the front of the fixed base. A second motor is provided inside each of the two second protective boxes. A connecting ring is fixedly connected to the output end of each of the two second motors. A lead screw is fixedly connected to the top of each of the two connecting rings. A bushing is provided on the outer side of the top of each of the two lead screws. The top of each bushing is fixedly connected to the bottom wall of the left and right sides of the device box.

[0012] Furthermore, an inner spiral sleeve is slidably connected to the outer side of each of the two lead screws, and a connecting plate is fixedly connected to the outer side of the two inner spiral sleeves. A support plate is fixedly connected to the top of the connecting plate, and the outer side of the support plate is located inside the feed port.

[0013] Furthermore, a base plate is fixedly connected to the front side wall of the fixed seat, and the left and right sides of the base plate are fixed in the middle of the two second protective boxes. An inclined plate is fixedly connected to the front side wall of the base plate. A second hydraulic rod is provided inside the front side wall of the fixed seat, and a second push plate is fixedly connected to the telescopic ends of the two second hydraulic rods. The second push plate is located on the top of the base plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model, through its designed pushing mechanism, solves the problem of uneven stacking, which affects subsequent handling and storage, requiring frequent stops of the conveyor line and manual sorting and placement of cartons, significantly reducing stacking efficiency. A second support plate is fixedly connected to the top outer side of four second connecting rods. Two second sliders are fixedly connected to the left and right sides of the second support plate, with two sliders positioned on the top outer side of the conveyor belt for auxiliary support and guidance. A first push plate is fixedly connected to the bottom end of the four second connecting rods. When the first slider moves with the conveyor belt, it drives the first push plate to move back and forth via the first support plate and second connecting rods, thus pushing the corrugated cartons on the conveyor belt to the designated stacking position. This effectively improves stacking speed and efficiency, reduces equipment adjustment time, and increases overall production efficiency.

[0016] 2. By incorporating a feeding port, a first hydraulic rod, a positioning plate, a second motor, a lead screw, and a support plate, this system effectively addresses the problem of cartons potentially tipping over, causing damage and product loss, increasing labor intensity, extending equipment downtime, and impacting production continuity and efficiency. The second motor, located within the second protective box, drives the connecting ring and lead screw to rotate. The inner spiral sleeve on the outside of the lead screw slides up and down with its rotation. The connecting plate on the outside of the inner spiral sleeve drives the support plate to rise and fall under the action of the lead screw, thus adapting to different palletizing height requirements. The bushing supports and guides the lead screw, ensuring its rotational stability. This effectively prevents the entire pallet from tipping over during handling and storage, reducing labor intensity, increasing palletizing speed, and ensuring production continuity.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the continuous stacking and unloading machine for corrugated cardboard boxes proposed in this utility model;

[0019] Figure 2 This is a rear structural diagram of the continuous stacking and unloading machine for corrugated cardboard boxes proposed in this utility model.

[0020] Figure 3 This is a structural diagram of the workbench of the continuous palletizing and unloading machine for corrugated cardboard boxes proposed in this utility model;

[0021] Figure 4 This is a structural diagram of the pushing mechanism of the continuous stacking and unloading machine for corrugated cardboard boxes proposed in this utility model.

[0022] Figure 5 This is a structural diagram of the first connecting rod of the continuous palletizing and unloading machine for corrugated cardboard boxes proposed in this utility model;

[0023] Figure 6 This is a structural diagram of the first slider of the continuous stacking and unloading machine for corrugated cardboard boxes proposed in this utility model;

[0024] Figure 7 This is a schematic diagram of the adjusting plate of the continuous stacking and feeding machine for corrugated cardboard boxes proposed in this utility model;

[0025] Figure 8 This is a structural diagram of the aligning plate of the continuous stacking and unloading machine for corrugated cardboard boxes proposed in this utility model.

[0026] Figure 9 This is a structural diagram of the connecting plate of the continuous stacking and unloading machine for corrugated cardboard boxes proposed in this utility model;

[0027] Figure 10This is a structural diagram of the inner spiral sleeve of the continuous stacking and unloading machine for corrugated cardboard boxes proposed in this utility model.

[0028] Figure 11 This is a structural diagram of the second pusher plate of the continuous stacking and feeding machine for corrugated cardboard boxes proposed in this utility model.

[0029] Legend:

[0030] 1. Conveyor belt; 2. Workbench; 3. L-shaped support plate; 4. Pushing mechanism; 401. First protective box; 402. First motor; 403. Rotating rod; 404. First fixed block; 405. First pulley; 406. Belt; 407. Second fixed block; 408. First connecting rod; 409. Second pulley; 410. First slider; 411. Connecting block; 412. First support plate; 413. Second connecting rod; 414. Second support plate; 415. Second slider; 416. First pusher 417. Plate; 5. Top cover; 6. Fixing frame; 7. Adjusting plate; 8. Quantity detector; 9. Second push plate; 10. Support rod; 11. Control panel; 12. Fixing seat; 13. Device box; 14. Discharge port; 15. Baffle; 16. First hydraulic rod; 17. Positioning plate; 18. Second protection box; 19. Second motor; 20. Connecting ring; 21. Lead screw; 22. Bushing; 23. Inner spiral sleeve; 24. Second hydraulic rod; 25. Connecting plate; 26. Support plate; 27. Base plate; 28. Inclined plate. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0032] like Figure 1 - Figure 6 As shown: A continuous stacking and unloading machine for corrugated cardboard boxes includes a conveyor belt 1. A workbench 2 is fixedly connected to the left side wall of the conveyor belt 1. An L-shaped support plate 3 is fixedly connected to the top of the workbench 2. A pushing mechanism 4 is provided on the top of the workbench 2 and the bottom wall of the L-shaped support plate 3. The processed cardboard boxes are transported to the workbench 2 by the conveyor belt 1, and the pushing mechanism 4 is supported by the L-shaped support plate 3 fixed to the top of the workbench 2.

[0033] The pushing mechanism 4 includes: a first protective box 401, a first motor 402, two first fixing blocks 404, two second fixing blocks 407, two first sliders 410, and two connecting blocks 411. The right side wall of the first protective box 401 is fixedly connected to the left side wall of the L-shaped support plate 3. The bottom wall of the first motor 402 is fixedly connected to the inside of the first protective box 401. The first protective box 401 provides external protection for the first motor 402 inside and fixes the device to the left side wall of the L-shaped support plate 3.

[0034] A rotating rod 403 is fixedly connected to the output end of the first motor 402. The left and right ends of the rotating rod 403 are rotatably connected to the inside of two first fixed blocks 404. The upper side walls of the two first fixed blocks 404 are fixedly connected to the front bottom wall of the L-shaped support plate 3. The outer sides of the left and right ends of the rotating rod 403 are fixedly connected to first pulleys 405. The inside of the two first pulleys 405 is provided with belts 406. After the first motor 402 is started, the rotating rod 403 on its output end will rotate inside the two first fixed blocks 404 and be fixed to the front bottom of the L-shaped support plate 3 by the first fixed blocks 404 to support the first fixed blocks 404 and to provide a stable and balanced rotation effect for the L-shaped support plate 3. When the rotating rod 403 rotates, the first pulleys 405 on the left and right ends of the rotating rod 403 will also rotate synchronously. In addition, when the first pulleys 405 rotate, the inside of the first pulleys 405 will generate friction with the belts 406 to drive the belts 406 to rotate.

[0035] The front sidewalls of the two second fixing blocks 407 are fixedly connected to the left and right sides of the rear sidewall of the L-shaped support plate 3. The first connecting rod 408 is rotatably connected inside the two second fixing blocks 407. By fixing the two second fixing blocks 407 to the left and right sides of the rear sidewall of the L-shaped support plate 3, the first connecting rod 408 inside is supported from the outside, and a stable and balanced effect is provided for the first connecting rod 408.

[0036] The left and right ends of the first connecting rod 408 are fixedly connected to the outer sides of the second pulleys 409. The rear sides of the two belts 406 are located inside the two second pulleys 409. The first connecting rod 408 is connected to the second pulleys 409, and the second pulleys 409 are connected to the rear sides of the belts 406. Thus, when the first pulley 405 is driven, the power is transmitted to the second pulleys 409 through the belts 406, thereby driving the second pulleys 409 and the first connecting rod 408 to rotate. The second pulleys 409 also provide support for the belts 406.

[0037] Two first sliders 410 are disposed on the outer bottom of two belts 406. Two connecting blocks 411 are fixedly connected to the bottom part of the two belts 406 inside the first sliders 410 by bolts. Top covers 417 are installed on the top of the two first sliders 410. The connecting blocks 411 are fixed to the bottom part of the belts 406 inside the first sliders 410 by bolts. When the belts 406 are driven by the first motor 402 to rotate forward and backward, the first sliders 410 are driven to slide back and forth on the top of the worktable 2. The top covers 417 of the first sliders 410 provide protection and support.

[0038] like Figure 1- Figure 7 As shown, a first support plate 412 is fixedly connected to the inner sidewall of the two first sliders 410. A second connecting rod 413 is connected through the inside of the first support plate 412. The two first sliders 410 are connected to the first support plate 412 through the inner sidewall. When the first slider 410 is driven to slide back and forth, the first support plate 412 on its inner sidewall will also slide accordingly, and the first support plate 412 will provide support and fixation for the second connecting rod 413 in the middle.

[0039] A second support plate 414 is fixedly connected to the outer top of the four second connecting rods 413. A second slider 415 is fixedly connected to both the left and right sides of the second support plate 414. The interior of the two second sliders 415 is located on the outer top of the belt 406. A first push plate 416 is fixedly connected to the bottom of the four second connecting rods 413. The four second connecting rods 413 are fixed together by the second support plate 414 on the top of the second connecting rods 413. In addition, the second sliders 415 on the left and right sides of the second support plate 414 are located on the outer top of the belt 406. When the belt 406 drives the first slider 410 to slide, the second sliders 415 provide a balancing effect and connect the bottom of the second connecting rods 413 to the first push plate 416, thereby driving the first push plate 416 to slide back and forth on the top of the workbench 2 and move the cartons on the workbench 2 forward to stack the cartons.

[0040] like Figure 1 - Figure 9 As shown, a fixed frame 5 is fixedly connected to the left side of the conveyor belt 1. An adjusting plate 6 is fixedly connected to the inner rear side wall of the fixed frame 5, and a quantity detector 7 is fixedly connected to the inner top of the fixed frame 5. When the cartons are continuously conveyed from the conveyor belt 1 to the workbench 2, the fixed frame 5 is located on the left side of the conveyor belt 1. The adjusting plate 6 on its inner rear side wall can finely adjust the conveying position of the cartons to ensure that the cartons accurately reach the designated position. At the same time, the quantity detector 7 on the inner top of the fixed frame 5 will count the number of cartons passing by in real time and feed the data back to the control panel 10 so that subsequent operations can be performed according to the preset palletizing quantity requirements.

[0041] Support rods 9 are fixedly connected to the front and rear sides of the bottom of the workbench 2. A control panel 10 is fixedly connected to the left side wall of the L-shaped support plate 3, through which the entire equipment is controlled. A fixed base 11 is fixedly connected to the bottom of the workbench 2, and the support rods 9 and the fixed base 11 support the bottom of the workbench 2, so that the workbench 2 and the conveyor belt 1 are on the same horizontal line.

[0042] A device box 12 is fixedly connected to the top front side of the workbench 2, providing external protection for the internal equipment. A feeding port 13 is provided inside the front side of the workbench 2, serving as a feeding hole. The pallet 25 is placed inside the feeding port 13 to provide bottom support for the cartons pushed forward by the pushing mechanism 4. A baffle 14 is fixedly connected to the inside front side of the device box 12, blocking the cartons and preventing them from being pushed too far into the feeding port 13.

[0043] The device box 12 has a first hydraulic rod 15 inside on both the left and right sides. The telescopic ends of the four first hydraulic rods 15 are fixedly connected to the positioning plate 16. After the carton enters the tray 25 inside the discharge port 13, the first hydraulic rods 15 are activated. The telescopic ends of the first hydraulic rods 15 drive the positioning plate 16 to slide towards the center to adjust and arrange the position of the carton, ensuring that the carton is placed neatly.

[0044] like Figure 1 - Figure 10 As shown, a second protective box 17 is provided on both the left and right sides of the front of the fixed base 11. A second motor 18 is installed inside each of the two second protective boxes 17, which provide external protection for the internal second motors 18. A connecting ring 19 is fixedly connected to the output end of each of the two second motors 18. A lead screw 20 is fixedly connected to the top of each of the two connecting rings 19. A bushing 21 is provided on the outer side of the top of each of the two lead screws 20. The tops of the two bushings 21 are fixedly connected to the bottom walls of the left and right sides of the device box 12. After the second motor 18 is started, the connecting ring 19 on the output end of the second motor 18 connects with the lead screw 20, thereby driving the connecting ring 19 and the lead screw 20 to rotate synchronously. Furthermore, when the lead screw 20 rotates, the top of the lead screw 20 is positioned inside the bushing 21, which is fixed to the bottom wall of the device box 12, providing support for the lead screw 20 and ensuring the stability of its rotation.

[0045] Both lead screws 20 are slidably connected to the outer sides of an inner spiral sleeve 22. A connecting plate 24 is fixedly connected to the outer sides of the two inner spiral sleeves 22. A support plate 25 is fixedly connected to the top of the connecting plate 24. The outer side of the support plate 25 is located inside the discharge port 13. The inner spiral sleeve 22 corresponds to the outer side of the lead screw 20 through its internal thread, thereby allowing the inner spiral sleeve 22 to slide up and down on the outer side of the lead screw 20. The outer side of the inner spiral sleeve 22 drives the connecting plate 24 to connect with the support plate 25, thereby driving the support plate 25 to slide up and down, thus adjusting the stacking height.

[0046] like Figure 1 - Figure 11As shown, a base plate 26 is fixedly connected to the front side wall of the fixed base 11. The left and right sides of the base plate 26 are fixed in the middle of the two second protective boxes 17. An inclined plate 27 is fixedly connected to the front side wall of the base plate 26. The base plate 26 is set at the bottom of the device box 12. When the cartons are stacked, the pallet 25 will descend. When the pallet 25 descends to the lowest point, it will stop on the top wall of the base plate 26. The connecting plate 24 at the bottom of the pallet 25 will enter the groove inside the base plate 26, so that when the pallet 25 stops on the top wall of the base plate 26, the pallet 25 is in a balanced state to prevent the cartons from falling after stacking.

[0047] The front side wall of the fixed base 11 is equipped with a second hydraulic rod 23. The telescopic ends of the two second hydraulic rods 23 are fixedly connected to a second push plate 8. The second push plate 8 is located on the top of the base plate 26. When the pallet 25 is lowered to its lowest point, the second hydraulic rod 23 inside the front side wall of the fixed base 11 is activated, and its telescopic end pushes the second push plate 8 forward on the top of the base plate 26, pushing the stack of cartons on the pallet 25 from the base plate 26 onto another pallet 25. The cartons and the other pallet 25 are then lifted by external transport vehicles and forklifts to be transported to the placement area. The inclined plate 27 creates an incline, allowing the transport vehicles and forklifts to access the base plate 26 to lift the cartons and the other pallet 25.

[0048] It should be noted that this utility model is a continuous palletizing and unloading machine for corrugated cardboard boxes. First, the first motor 402, control panel 10, first hydraulic rod 15, second motor 18, and second hydraulic rod 23 are connected to an external power source to supply power to the device.

[0049] When the corrugated cardboard box is conveyed to the vicinity of the workbench 2 via conveyor belt 1, the first motor 402 starts. The first motor 402 is installed inside the first protective box 401, which is fixed to the left side wall of the L-shaped support plate 3, providing stable support and protection for the first motor 402. After the first motor 402 starts, its output end drives the rotating rod 403 to rotate. The left and right ends of the rotating rod 403 are respectively rotatably connected to the inside of two first fixing blocks 404, which are fixed to the front bottom wall of the L-shaped support plate 3, ensuring the stable rotation of the rotating rod 403.

[0050] The left and right ends of the rotating rod 403 are fixedly connected to the outer sides of the first pulleys 405. Therefore, when the rotating rod 403 rotates, it will drive the two first pulleys 405 to rotate synchronously. After the first motor 402 starts, its output end drives the rotating rod 403 to rotate. The left and right ends of the rotating rod 403 are respectively rotatably connected to the inside of two first fixed blocks 404. The two first fixed blocks 404 are fixed to the front bottom wall of the L-shaped support plate 3, ensuring the stable rotation of the rotating rod 403. The left and right ends of the rotating rod 403 are fixedly connected to the outer sides of the first pulleys 405. Therefore, when the rotating rod 403 rotates, it will drive the two first pulleys 405 to rotate synchronously.

[0051] Two first sliders 410 are disposed on the outer bottom of the two belts 406, and a portion of the bottom of the belts 406 is fixedly connected to the inside of the first sliders 410 by a connecting block 411 and bolts. Thus, when the belts 406 move, they will drive the first sliders 410 to move together. A top cover 417 is installed on the top of the first sliders 410 for protection and fixation. A first support plate 412 is fixedly connected to the inner sidewalls of the two first sliders 410, and a second connecting rod 413 is passed through the inside of the first support plate 412.

[0052] A second support plate 414 is fixedly connected to the outer top of each of the four second connecting rods 413. Two second sliders 415 are fixedly connected to the left and right sides of each second support plate 414. The two second sliders 415 are positioned on the outer top of the belt 406, providing auxiliary support and guidance. A first push plate 416 is fixedly connected to the bottom of each of the four second connecting rods 413. When the first slider 410 moves with the belt 406, it drives the first push plate 416 to move back and forth via the first support plate 412 and the second connecting rods 413, thereby pushing the corrugated cartons on the conveyor belt to the designated stacking position.

[0053] After the first pusher plate 416 completes one push action, the first motor 402 can reverse or rotate forward according to the instructions of the control system, causing the belt 406 to move in the opposite direction, driving the first pusher plate 416 back to the initial position, ready for the next push operation, so as to realize the continuous stacking and unloading of corrugated cartons.

[0054] When the carton is conveyed to the appropriate position, the pushing mechanism 4 starts working. The first motor 402 starts, driving the rotating rod 403 and the first pulley 405 to rotate, which in turn drives the second pulley 409 and the first connecting rod 408 to rotate via the belt 406. The first slider 410 moves with the belt 406, which in turn drives the first push plate 416 to push the carton from the conveyor belt 1 onto the tray 25 inside the feed port 13 on the front side of the workbench 2.

[0055] The first hydraulic rod 15 inside the left and right sides of the device box 12 is activated, and its telescopic end pushes the positioning plate 16 to move towards the middle, adjusting and arranging the cartons on the pallet 25 to ensure that the cartons are placed neatly, so as to form a regular stack for subsequent stacking.

[0056] When the number or height of cartons on pallet 25 reaches a certain level, the height of pallet 25 needs to be adjusted to continue stacking more cartons. At this time, the second motor 18 inside the second protective box 17 starts, and its output drives the connecting ring 19 and the lead screw 20 to rotate. The inner spiral sleeve 22 on the outside of the lead screw 20 slides up and down as the lead screw 20 rotates. The connecting plate 24 on the outside of the inner spiral sleeve 22 drives the pallet 25 to rise and fall under the action of the lead screw 20, thereby adapting to different stacking height requirements. The bushing 21 supports and guides the lead screw 20, ensuring the stability of the lead screw 20's rotation.

[0057] After the stacking is completed, the stacked cartons need to be unloaded. The second hydraulic rod 23 inside the front side wall of the fixed base 11 is activated, and its telescopic end pushes the second push plate 8 to move forward on the top of the base plate 26, pushing the stacked cartons on the pallet 25 out of 26. The worker can then slide the cartons out of the device by hand through the inclined plate 27, completing the entire stacking and unloading process.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A continuous stacking and unloading machine for corrugated cardboard boxes, comprising a conveyor belt (1), characterized in that: A workbench (2) is fixedly connected to the left side wall of the conveyor belt (1), and an L-shaped support plate (3) is fixedly connected to the top of the workbench (2). A pushing mechanism (4) is provided on the top of the workbench (2) and the bottom wall of the L-shaped support plate (3). The pushing mechanism (4) includes: a first protective box (401), a first motor (402), two first fixing blocks (404), two second fixing blocks (407), two first sliders (410), and two connecting blocks (411). The right side wall of the first protective box (401) is fixedly connected to the left side wall of the L-shaped support plate (3). The bottom wall of the first motor (402) is fixedly connected to the inside of the first protective box (401). The output end of the first motor (402) is fixedly connected to a rotating rod (403). The left and right ends of the rotating rod (403) are rotatably connected to the inside of the two first fixing blocks (404). The upper side walls of the two first fixing blocks (404) are fixedly connected to the front bottom wall of the L-shaped support plate (3). The outer sides of the left and right ends of the rotating rod (403) are fixedly connected to first pulleys (405). The inside of the two first pulleys (405) is provided with belts (406).

2. The continuous palletizing and unloading machine for corrugated cardboard boxes according to claim 1, characterized in that: The front sidewalls of the two second fixing blocks (407) are fixedly connected to the left and right sides of the rear sidewall of the L-shaped support plate (3). The interior of the two second fixing blocks (407) is rotatably connected to the first connecting rod (408). The outer sides of the left and right ends of the first connecting rod (408) are fixedly connected to the second pulleys (409). The rear sides of the two belts (406) are located inside the two second pulleys (409). The two first sliders (410) are located on the bottom outer side of the two belts (406). The two connecting blocks (411) are fixedly connected to the bottom part of the two belts (406) inside the first sliders (410) by bolts. The top of the two first sliders (410) is equipped with a top cover (417).

3. The continuous palletizing and unloading machine for corrugated cardboard boxes according to claim 2, characterized in that: The inner walls of the two first sliders (410) are fixedly connected to a first support plate (412). The inside of the first support plate (412) is connected to a second connecting rod (413). The top outer sides of the four second connecting rods (413) are fixedly connected to a second support plate (414). The left and right sides of the second support plate (414) are fixedly connected to second sliders (415). The inside of the two second sliders (415) is set on the top outer side of the belt (406). The bottom ends of the four second connecting rods (413) are fixedly connected to a first push plate (416).

4. The continuous palletizing and unloading machine for corrugated cardboard boxes according to claim 1, characterized in that: A fixed frame (5) is fixedly connected to the left side of the conveyor belt (1), an adjustment plate (6) is fixedly connected to the inner rear side wall of the fixed frame (5), a quantity detector (7) is fixedly connected to the inner top of the fixed frame (5), support rods (9) are fixedly connected to the front and rear sides of the bottom of the workbench (2), a control panel (10) is fixedly connected to the left side wall of the L-shaped support plate (3), and a fixed seat (11) is fixedly connected to the bottom of the workbench (2).

5. The continuous palletizing and unloading machine for corrugated cardboard boxes according to claim 4, characterized in that: A device box (12) is fixedly connected to the top front side of the workbench (2). A discharge port (13) is opened inside the front side of the workbench (2). A baffle (14) is fixedly connected inside the front side of the device box (12). First hydraulic rods (15) are provided inside the left and right sides of the device box (12). The telescopic ends of the four first hydraulic rods (15) are fixedly connected to a positioning plate (16).

6. The continuous palletizing and unloading machine for corrugated cardboard boxes according to claim 4, characterized in that: The front left and right sides of the fixed base (11) are provided with a second protective box (17). The two second protective boxes (17) are each provided with a second motor (18). The output ends of the two second motors (18) are fixedly connected with connecting rings (19). The top ends of the two connecting rings (19) are fixedly connected with lead screws (20). The outer sides of the top ends of the two lead screws (20) are provided with bushings (21). The top ends of the two bushings (21) are fixedly connected to the bottom walls of the left and right sides of the device box (12).

7. The continuous stacking and unloading machine for corrugated cardboard boxes according to claim 6, characterized in that: Both lead screws (20) are slidably connected to the outer sides of an inner spiral sleeve (22), and a connecting plate (24) is fixedly connected to the outer sides of the two inner spiral sleeves (22). A support plate (25) is fixedly connected to the top of the connecting plate (24), and the outer side of the support plate (25) is located inside the feed inlet (13).

8. The continuous palletizing and unloading machine for corrugated cardboard boxes according to claim 6, characterized in that: The front side wall of the fixed base (11) is fixedly connected to a base plate (26). The left and right sides of the base plate (26) are fixed in the middle of two second protective boxes (17). The front side wall of the base plate (26) is fixedly connected to an inclined plate (27). The front side wall of the fixed base (11) is provided with a second hydraulic rod (23). The telescopic ends of the two second hydraulic rods (23) are fixedly connected to a second push plate (8). The second push plate (8) is set on the top of the base plate (26).

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