Automatic board turning system for corrugated board stacks

Abstract

The present application relates to a kind of corrugated board stack automatic plate turning systems, including lifting split unit, for the paperboard with preset height is lifted after splitting, and is transported to turnover unit;Turnover unit, for receiving the paperboard of splitting unit delivery after and the paperboard is turned over;Palletizing unit, for the paperboard of turnover unit after turning over is palletized;Control cabinet, for the lifting split unit, turnover unit and palletizing unit are controlled.The advantages of the present application are: by the setting of lifting split unit, turnover unit and palletizing unit, meet the automatic paperboard turning needs, improve work efficiency.

Description

Technical Field

[0001] This invention relates to an automatic flipping system for corrugated cardboard stacks, belonging to the field of cardboard processing. Background Technology

[0002] With the advancement of technology and the development of manufacturing, automation technology is gradually becoming a key competitive factor in various industries. The rapid development of e-commerce and logistics has fueled continuous growth in the demand for corrugated paper. Market research data indicates that the corrugated paper market will maintain stable growth in the coming years. The demand from large and medium-sized enterprises and the e-commerce market is particularly prominent, with increasingly higher requirements for both the quality and quantity of corrugated paper. Traditional corrugated paper production processes suffer from inefficiency and inconsistent quality, making it difficult to meet the rapidly growing market demand. Therefore, developing a new type of automated corrugated paper system to improve production efficiency and product quality while reducing production costs has become an urgent need for the industry.

[0003] Existing technical solutions sometimes involve manual flipping. The neatly stacked cardboard stacks are automatically transported to the flipping station by a conveyor. Multiple workers work together to break the entire cardboard stack into a small section, flip it over, and place it on the other side of the station. Then, another section of cardboard is broken off and stacked on top of the flipped cardboard stack without reversing it. This process is repeated until the entire cardboard stack is flipped.

[0004] Its drawbacks are: 1. Low flipping efficiency; 2. Requires multiple people to participate, wasting manpower; 3. Cannot work continuously, affecting production speed; 4. The number of small pieces of cardboard that are split is uncertain, making it impossible to achieve even cross-arrangement of the front and back sides.

[0005] Existing technologies include automatic flipping technology. The flipping equipment is connected in series in the production line. The cardboard produced in the previous step is automatically stacked to a certain height via the conveyor line and then transported as a whole to the stacking station. After passing through the automatic flipping and stacking equipment, the flipping action is completed first, and this part of the cardboard is stacked on the stacking station. The above action is repeated. The next part of the cardboard is judged not to need to be flipped and is stacked on the stacking station. This process is repeated in turn to achieve the requirement of placing the cardboard in the stack according to the front and back cross arrangement.

[0006] Its drawbacks are: 1. The equipment is connected in series in the production line, which affects production efficiency; 2. The equipment has a complex structure and is relatively tall, making it inconvenient to maintain; 3. The flipping device needs to move up and down to receive cardboard, which reduces safety. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention provides an automatic corrugated cardboard stack flipping system. The technical solution of this invention is as follows:

[0008] An automatic corrugated cardboard stack flipping system includes:

[0009] The lifting and splitting unit is used to lift and split cardboard with a preset height, and then convey it to the flipping unit;

[0010] The flipping unit is used to receive the cardboard from the splitting unit and flip it over; the stacking unit is used to stack the cardboard flipped over by the flipping unit.

[0011] The control cabinet is used to control the lifting and splitting unit, the flipping unit, and the palletizing unit.

[0012] The lifting and splitting unit includes a splitting bracket, a lifting drive motor, a lifting drive shaft, a lifting driven shaft, a cardboard lifting assembly, a chain drive assembly, and a splitting assembly. The cardboard lifting assembly is vertically mounted on the splitting bracket. The lifting drive motor, lifting drive shaft, and lifting driven shaft are also mounted on the splitting bracket. The lifting drive shaft is driven by the lifting drive motor. The lifting driven shaft includes a first lifting driven shaft and a second lifting driven shaft. The first lifting driven shaft is located directly below the lifting drive shaft and is connected to the lifting drive shaft via the chain drive assembly. A cardboard lifting assembly rotates on the splitting bracket on the side away from the lifting drive shaft. The system is equipped with a second driven lifting shaft, which is at the same height as the driving lifting shaft on the splitting bracket and is arranged parallel to each other. The splitting assembly is located on the upper part of the splitting bracket. The chain drive assembly is also connected to the cardboard lifting assembly. When the lifting drive motor rotates, it drives the driving lifting shaft to rotate. This driving lifting shaft, through the chain drive assembly, drives the first and second driven lifting shafts to rotate, and in turn drives the cardboard lifting assembly to lift and lower. A proximity sensor is installed on the splitting bracket to detect the cardboard on the cardboard lifting assembly, and this proximity sensor is connected to the control cabinet.

[0013] The chain drive assembly includes a first drive chain and a second drive chain. The two first drive chains are arranged parallel to each other and spaced apart. One end of each first drive chain is connected to a lifting member on one side of the cardboard lifting assembly, and the other end passes sequentially around a sprocket on the second driven shaft, a sprocket on the driving shaft, and a sprocket on the first driven shaft before connecting to a lifting member on the other side of the cardboard lifting assembly. Two second drive chains are installed between the driving shaft and the first driven shaft. One end of each second drive chain is connected to the upper part of the lifting member, and the other end passes sequentially around a sprocket on the driving shaft and a sprocket on the first driven shaft before connecting to the lower part of the lifting member.

[0014] The cardboard lifting assembly includes a lifting frame, a running conveyor belt, and a conveyor belt drive motor. Guide blocks are provided on both sides of the lifting frame, and the guide blocks slide in cooperation with guide rods mounted on the splitting bracket. Each of the guide rods is arranged in a vertical direction. A conveyor belt drive roller is installed on the lifting frame, and the conveyor belt drive roller is driven by the conveyor belt drive motor. The running conveyor belt bypasses the conveyor belt drive roller and is driven by the conveyor belt drive roller. A conveyor cover plate is installed on the lifting frame to shield the conveyor belt drive motor.

[0015] The splitting assembly includes a splitting drive motor, a splitting drive shaft, a splitting driven shaft, a splitting plate, a splitting transmission sprocket, a third transmission chain, a splitting guide rod, and chain connectors. The splitting drive shaft and the splitting driven shaft are rotatably mounted on the splitting bracket, and the splitting drive shaft is driven by the splitting drive motor. A chain connector is installed on each side of the splitting plate. Two third transmission chains are symmetrically arranged along the splitting plate. One end of each third transmission chain is connected to one side of the chain connector, and the other end passes sequentially around the sprocket on the splitting drive shaft and the sprocket on the splitting driven shaft before connecting to the other side of the chain connector. A splitting guide rod arranged horizontally is installed on each side of the splitting bracket on both sides of the splitting plate, and the splitting plate slides in conjunction with the splitting guide rod.

[0016] The flipping unit includes a flipping fixed bracket, a flipping drive assembly, and a flipping component. The flipping component is rotatably mounted on the upper part of the flipping fixed bracket and is driven by the flipping drive assembly. The flipping component includes a flipping frame, a flipping shaft, a mounting bearing seat, an upper cardboard synchronous drive assembly, and a lower cardboard synchronous drive assembly. Two flipping frames are connected together by a connecting rod. A flipping shaft is mounted on the outer side of each flipping frame. Each flipping shaft is rotatably mounted on the flipping fixed bracket via a mounting bearing seat. The upper cardboard synchronous drive assembly is mounted on the upper part of the inner side of the flipping frame, and a lower cardboard synchronous drive assembly corresponding to the upper cardboard synchronous drive assembly is mounted on the lower part of the inner side of the flipping frame. A flipping space for flipping the cardboard is formed between the lower cardboard synchronous drive assembly and the upper cardboard synchronous drive assembly. Baffle assemblies are installed at the cardboard inlet and cardboard outlet of the flipping space.

[0017] The upper and lower paperboard synchronous drive components have the same structure, each including a first synchronous pulley shaft, a second synchronous pulley shaft, synchronous pulleys, and a clamping synchronous belt. The second synchronous pulley shaft and the first synchronous pulley shaft are arranged parallel to each other and form a gap. Several synchronous pulleys are installed on both the second and first synchronous pulley shafts, with a gap between adjacent synchronous pulleys. The synchronous pulleys on the first and second synchronous pulley shafts are connected by a clamping synchronous belt. The first synchronous pulley shaft of the upper paperboard synchronous drive component is driven by a synchronous belt motor, and the second synchronous pulley shafts of the lower and upper paperboard synchronous drive components are connected by a transmission sprocket set. The clamping synchronous belts of the upper and lower paperboard synchronous drive components run in the same direction.

[0018] The flipping drive assembly includes a flipping drive motor, a flipping drive gear, and a flipping driven gear. The flipping driven gear is fixedly mounted on one of the flipping shafts. The flipping drive motor is fixedly mounted on the flipping mounting bracket. The flipping drive gear is mounted on the motor shaft of the flipping drive motor and meshes with the flipping driven gear. A contact sensor for detecting the flipping position of the flipping frame is mounted on the flipping mounting bracket and is connected to the control cabinet. The baffle assembly includes a baffle drive cylinder, a rotating bracket, and baffles. Several baffles are arranged on the first and second synchronous pulley shafts of the upper cardboard synchronous drive assembly. A synchronous pulley is arranged between two adjacent baffles. Each baffle rotates with the first synchronous pulley shaft. All baffles are hinged to the rotating bracket. The end of the rotating bracket is hinged to the telescopic rod of the baffle drive cylinder, which is mounted on the flipping frame. The middle part of the rotating bracket is hinged to the flipping frame. All baffles open and close under the drive of the baffle drive cylinder.

[0019] The palletizing unit has the same structure as the lifting and splitting unit, and both the paperboard input port of the lifting and splitting unit and the paperboard output port of the palletizing unit are equipped with unpowered output rollers.

[0020] An anti-tipping assembly is installed on the splitting bracket of the palletizing unit. The anti-tipping assembly is close to the unpowered output roller and includes an anti-tipping push-pull cylinder and a push-pull plate. The push-pull plate corresponds to the splitting plate, and the bottom end of the push-pull plate is hinged to the splitting bracket. The anti-tipping push-pull cylinder is located at the rear of the push-pull plate, and the cylinder body of the anti-tipping push-pull cylinder is hinged to the splitting bracket. The telescopic rod of the anti-tipping push-pull cylinder is hinged to the push-pull plate. The push-pull plate is rotated by the anti-tipping push-pull cylinder to limit the movement of the cardboard.

[0021] The advantages of this invention are: by improving the configuration of the splitting unit, flipping unit, and palletizing unit, it meets the requirements for automatic cardboard flipping, improves work efficiency, and has the following advantages:

[0022] 1. Automated processes reduce manual handling and processing time, improving overall production efficiency.

[0023] 2. Automation reduces reliance on manual operation, thereby lowering long-term labor costs.

[0024] 3. It reduces workers' opportunities to directly contact dangerous mechanical parts, thus lowering workplace safety risks.

[0025] 4. Pre-set height cardboard splitting ensures product size consistency and improves product quality.

[0026] 5. Precise automated splitting and flipping reduces material waste caused by improper operation.

[0027] 6. Automated processes operate continuously, are not limited by human fatigue, and improve production capacity.

[0028] 7. Reduced human error and improved product qualification rate. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0030] Figure 2 yes Figure 1 A schematic diagram of the structure of the split unit.

[0031] Figure 3 yes Figure 2 A schematic diagram of the structure of the split component.

[0032] Figure 4 yes Figure 2 A schematic diagram of the structure of the paperboard lifting assembly.

[0033] Figure 5 yes Figure 1 A schematic diagram of the structure of the flip unit.

[0034] Figure 6 yes Figure 5 A schematic diagram of the structure of the inverting component.

[0035] Figure 7 yes Figure 1 A schematic diagram of the structure of the middle palletizing unit. Detailed Implementation

[0036] The present invention will be further described below with reference to specific embodiments, and the advantages and features of the present invention will become clearer as a result. However, these embodiments are merely exemplary and do not constitute any limitation on the scope of the present invention. Those skilled in the art should understand that modifications or substitutions can be made to the details and form of the technical solutions of the present invention without departing from the spirit and scope of the present invention, but all such modifications and substitutions fall within the protection scope of the present invention.

[0037] See Figures 1 to 7 This invention relates to an automatic corrugated cardboard stacking system, comprising:

[0038] The lifting and splitting unit 1 is used to lift and split the cardboard with a preset height and then convey it to the flipping unit;

[0039] The flipping unit 2 is used to receive the cardboard conveyed by the splitting unit and flip the cardboard; the stacking unit 3 is used to stack the cardboard flipped by the flipping unit.

[0040] The control cabinet is used to control the lifting and splitting unit, the flipping unit, and the palletizing unit.

[0041] The lifting and splitting unit 1 automates the lifting and splitting of the cardboard, reducing manual operation and improving efficiency; it can accurately split the cardboard according to the preset height, ensuring the consistency and quality of the cardboard size; the split cardboard is smoothly conveyed to the flipping unit, ensuring the continuity of the production process.

[0042] The flipping unit 2 can seamlessly receive cardboard from the lifting and splitting unit, reducing delays in intermediate steps; it can quickly and accurately flip the cardboard to provide the stacking unit with cardboard in the correct orientation, improving the efficiency of subsequent processes; and the automated flipping reduces the damage that may occur to the cardboard during manual handling.

[0043] The palletizing unit 3 automatically and neatly stacks the flipped cardboard, improving palletizing efficiency and accuracy. The control cabinet centrally controls all units, simplifying the operation process.

[0044] like Figure 4As shown, the lifting and splitting unit 1 includes a splitting bracket 13, a lifting drive motor 4, a lifting drive shaft 5, a lifting driven shaft, a cardboard lifting assembly 11, a chain drive assembly, and a splitting assembly 12. The cardboard lifting assembly 11 is movably mounted on the splitting bracket 13. The lifting drive motor 4, the lifting drive shaft 5, and the lifting driven shaft are also mounted on the splitting bracket 13. The lifting drive shaft 5 is driven by the lifting drive motor 4. The lifting driven shaft includes a first lifting driven shaft 6 and a second lifting driven shaft 9. The first lifting driven shaft 6 is located directly below the lifting drive shaft 5 and is connected to the lifting drive shaft 5 via the chain drive assembly. The cardboard lifting assembly 12 rotates on the splitting bracket on the side away from the lifting drive shaft 5. A second lifting driven shaft 9 is mounted on the splitting bracket 13. This second lifting driven shaft 9 and the lifting drive shaft 5 are at the same height on the splitting bracket 13 and are arranged parallel to each other. The splitting assembly 12 is arranged on the upper part of the splitting bracket 13. The chain drive assembly is also connected to the cardboard lifting assembly 11. When the lifting drive motor 4 rotates, it drives the lifting drive shaft 5 to rotate. The lifting drive shaft 5 drives the first lifting driven shaft 6 and the second lifting driven shaft 9 to rotate through the chain drive assembly, and drives the cardboard lifting assembly 11 to lift and lower. A proximity sensor for detecting the cardboard on the cardboard lifting assembly 11 is installed on the splitting bracket 13. This proximity sensor is connected to the control cabinet.

[0045] This improved split-unit setting achieves the following advantages:

[0046] The lifting drive motor 4 ensures that the lifting movement of the cardboard lifting assembly 11 can be precisely controlled, thereby achieving precise positioning of the cardboard layer.

[0047] Power is transmitted from the lifting drive shaft 5 to the first lifting driven shaft 6 and the second lifting driven shaft 9 via the chain drive assembly. This transmission method is stable and highly efficient.

[0048] The first lifting driven shaft 6 and the second lifting driven shaft 9 provide balanced lifting forces to prevent the cardboard from tilting or shifting during the lifting process.

[0049] The installation of proximity sensors can automatically detect the position of cardboard, reduce human error, and improve safety and reliability.

[0050] The connection between the proximity sensor and the control cabinet enables intelligent linkage, which can automatically adjust the movement of the cardboard lifting assembly 11 based on the feedback from the proximity sensor.

[0051] The cardboard lifting assembly 11 rises according to the situation after the top layer of cardboard is removed, adapting to cardboard stacks of different thicknesses.

[0052] Automation and modularization reduce the need for manual handling and positioning, thereby lowering labor intensity and operational risks.

[0053] The working principle of the lifting and splitting unit is as follows:

[0054] Start-up phase: The lifting drive motor 4 starts working, driving the lifting drive shaft 5 to rotate.

[0055] Power transmission: The lifting drive shaft 5 transmits power to the first lifting driven shaft 6 and the second lifting driven shaft 9 through the chain drive assembly, so as to achieve synchronous rotation.

[0056] Cardboard lifting: As the first lifting driven shaft 6 and the second lifting driven shaft 9 rotate, the cardboard lifting assembly 11 is driven to rise and fall, lifting the cardboard to a preset height.

[0057] Splitting process: After the cardboard is lifted to the top, the splitting component 12 moves the top cardboard to the flipping unit.

[0058] Monitoring and feedback: Proximity sensors monitor the status of the cardboard on the cardboard lifting assembly 11 and feed the information back to the control cabinet.

[0059] Automatic lifting: After the top layer of cardboard is removed, the proximity sensor detects the change, and the control cabinet issues a command to start the lifting drive motor 4 again, so that the cardboard lifting assembly 11 rises to a height equivalent to the thickness of one layer of cardboard, in preparation for the splitting of the next layer of cardboard.

[0060] Cyclic operation: The above process is repeated until all the cardboard is split and moved to the flipping unit.

[0061] The chain drive assembly includes a first drive chain 112 and a second drive chain 114. The two first drive chains 112 are arranged parallel to each other and are spaced apart. One end of each first drive chain 112 is connected to a lifting member 115 on one side of the cardboard lifting assembly 11, and the other end passes sequentially around the sprocket on the second driven shaft 9, the sprocket on the driving shaft 5, and the sprocket 7 on the first driven shaft 6 before connecting to the lifting member 15 on the other side of the cardboard lifting assembly 11. Two second drive chains 114 are installed between the driving shaft 5 and the first driven shaft 6. One end of each second drive chain 114 is connected to the upper part of the lifting member 15, and the other end passes sequentially around the sprocket on the driving shaft 5 and the sprocket on the first driven shaft 6 before connecting to the lower part of the lifting member 15.

[0062] The design of the chain drive assembly has the following advantages:

[0063] The first drive chain 112 and the second drive chain 114 provide a stable force transmission path, ensuring the smooth lifting and lowering of the cardboard lifting assembly 11.

[0064] The two first drive chains 112 are arranged parallel to each other, forming a gap, which helps to balance the load distribution and reduce uneven tension of the chains.

[0065] The design of the first transmission chain 112 and the second transmission chain 114 ensures synchronous movement on both sides of the lifting assembly, preventing the cardboard from tilting during the lifting process.

[0066] The installation of the second transmission chain 114 between the lifting drive shaft 5 and the first lifting driven shaft 6 makes the entire transmission system more compact and saves space.

[0067] The working principle of the chain drive assembly is as follows:

[0068] When the lifting drive motor 4 starts, it transmits power to the lifting drive shaft 5. The sprocket on the lifting drive shaft 5 drives the first transmission chain 112. The first transmission chain passes around the sprocket along a predetermined path and transmits power to the lifting member 115 of the cardboard lifting assembly 11. The two ends of the first transmission chain 112 are respectively connected to the lifting members on both sides of the cardboard lifting assembly 11, realizing bidirectional transmission. The second transmission chain 114 is connected to the upper and lower parts of the lifting member 15, passing around the sprockets of the lifting drive shaft 5 and the first lifting driven shaft 6, providing auxiliary power and support. The coordinated work of the first transmission chain 112 and the second transmission chain 114 ensures the synchronous lifting and lowering of both sides of the cardboard lifting assembly 11, preventing load offset. The first transmission chain and the second transmission chain circulate on the sprocket to realize the lifting and lowering of the cardboard lifting assembly 11.

[0069] like Figure 4 As shown, the cardboard lifting assembly 11 includes a lifting frame 8, a running conveyor belt 113, and a conveyor belt drive motor. Guide blocks 81 are provided on both sides of the lifting frame 8, and the guide blocks 81 are slidably engaged with guide rods 111 installed on the splitting bracket 13. Each of the guide rods 111 is arranged in a vertical direction. A conveyor belt drive roller is installed on the lifting frame 8, and the conveyor belt drive roller is driven by the conveyor belt drive motor. The running conveyor belt bypasses the conveyor belt drive roller and is driven by the conveyor belt drive roller. A conveyor cover plate 10 is installed on the lifting frame 8 to cover the conveyor belt drive motor.

[0070] The splitting assembly includes a splitting drive motor 101, a splitting drive shaft 102, a splitting driven shaft 17, a splitting plate 16, a splitting transmission sprocket 103, a third transmission chain 14, a splitting guide rod 15, and a chain connector 18. The splitting drive shaft 102 and the splitting driven shaft 17 are rotatably mounted on the splitting bracket 13, and the splitting drive shaft 102 is driven by the splitting drive motor 101. A chain connector 18 is installed on each side of the splitting plate 16. Two third transmission chains 14 are symmetrically arranged along the splitting plate 16. One end of each third transmission chain 14 is connected to one side of the chain connector 18, and the other end passes sequentially around the sprocket on the splitting drive shaft 102 and the sprocket on the splitting driven shaft 17 before connecting to the other side of the chain connector 18. A splitting guide rod 15 arranged horizontally is installed on the splitting bracket 13 on both sides of the splitting plate 16, and the splitting plate 16 and the splitting guide rod 15 are in sliding engagement.

[0071] The sliding engagement between the guide block 81 and the guide rod 111 of the cardboard lifting assembly 11 ensures the stable operation of the lifting frame 8 in the vertical direction; the running conveyor belt 113 is driven by the conveyor belt drive motor, ensuring the continuity and uniformity of cardboard conveying; the conveyor belt drive roller is driven by the conveyor belt drive motor, ensuring the effective transmission of power; the conveyor cover plate 10 shields the conveyor belt drive motor, protecting the motor from dust and debris, and also facilitating maintenance and cleaning.

[0072] The working principle of the cardboard lifting assembly 11 is as follows: the conveyor belt drive motor receives the instruction from the control cabinet and starts to rotate; the conveyor belt drive roller is driven by the motor to drive the running conveyor belt 113 to rotate; the cardboard is placed on the running conveyor belt, and as the running conveyor belt rotates, the cardboard is output to the flipping unit.

[0073] The flipping unit includes a flipping fixing bracket 23, a flipping drive assembly 22, and a flipping assembly 21. The flipping assembly 21 is rotatably mounted on the upper part of the flipping fixing bracket 23 and is driven by the flipping drive assembly 22. The flipping assembly 21 includes a flipping frame 203, a flipping shaft, a mounting bearing seat 27, an upper cardboard synchronous drive assembly, and a lower cardboard synchronous drive assembly. Two flipping frames 23 are connected together by a connecting rod. A flipping shaft is mounted on the outside of each flipping frame 203. Each flipping shaft is rotatably mounted on the flipping fixing bracket 23 via the mounting bearing seat 27. The upper cardboard synchronous drive assembly is mounted on the upper part of the inner side of the flipping frame 203, and a lower cardboard synchronous drive assembly corresponding to the upper cardboard synchronous drive assembly is mounted on the lower part of the inner side of the flipping frame 203. The lower cardboard synchronous drive assembly and the upper cardboard synchronous drive assembly form a flipping space for flipping the cardboard. Baffle assemblies are installed at the cardboard inlet and cardboard outlet of the flipping space.

[0074] The upper and lower paperboard synchronous drive components have the same structure, both including a first synchronous pulley shaft 208, a second synchronous pulley shaft 209, synchronous pulleys 210, and a clamping synchronous belt 205. The second synchronous pulley shaft 209 and the first synchronous pulley shaft 208 are arranged parallel to each other and form a gap. Several synchronous pulleys 210 are installed on both the second synchronous pulley shaft 209 and the first synchronous pulley shaft 208, with a gap between adjacent synchronous pulleys 210. The synchronous pulleys on the first synchronous pulley shaft 208 are connected to the corresponding first synchronous pulleys 205. The synchronous pulleys on the two synchronous pulley shafts 209 are connected by a clamping synchronous belt 205; the first synchronous pulley shaft of the upper cardboard synchronous drive assembly is driven by a synchronous belt motor 21, and the second synchronous pulley shaft 209 of the lower cardboard synchronous drive assembly and the second synchronous pulley shaft 209 of the upper cardboard synchronous drive assembly are connected by a transmission sprocket set 206. The clamping synchronous belt 205 of the upper cardboard synchronous drive assembly and the clamping synchronous belt 205 of the lower cardboard synchronous drive assembly run in the same direction and are used to transport the cardboard that has passed through the flipping space.

[0075] The aforementioned flipping unit has the following advantages:

[0076] The flipping fixing bracket 23 provides a stable foundation to ensure the stable operation of the flipping assembly 21; the flipping drive assembly 22 realizes the automatic control of the flipping assembly, improves efficiency and reduces manual intervention; the upper cardboard synchronous drive assembly and the lower cardboard synchronous drive assembly use clamping synchronous belt drive to ensure the smooth transport of the cardboard during the flipping process.

[0077] Precise control of the speed and direction of paperboard conveying is achieved through the precise coordination of the synchronous belt pulley shaft and the synchronous belt pulley.

[0078] In particular, it confines the cardboard to a limited flipping space, saving floor space.

[0079] The aforementioned flip drive assembly includes a flip drive motor, a flip drive gear 204, and a flip driven gear. The flip driven gear is fixedly mounted on one of the flip shafts. The flip drive motor is fixedly mounted on the flip mounting bracket 23. A flip drive gear 24 is mounted on the motor shaft of the flip drive motor, and the flip drive gear 24 meshes with the flip driven gear. A contact sensor for detecting the flip position of the flip frame 23 is mounted on the flip mounting bracket 23, and the contact sensor is connected to the control cabinet.

[0080] The working principle of the aforementioned flip-drive component is as follows:

[0081] The flipping drive motor, serving as the power source, is fixedly mounted on the flipping mounting bracket 23. When the flipping motor starts, its motor shaft begins to rotate; a flipping drive gear 24 is mounted on the motor shaft of the flipping drive motor. As the motor shaft rotates, the flipping drive gear 24 also rotates; the flipping drive gear 24 meshes with the flipping driven gear. The flipping driven gear is fixedly mounted on the flipping shaft, therefore, when the flipping drive gear 24 rotates, it drives the flipping driven gear through gear meshing, thereby driving the flipping shaft to rotate; the rotation of the flipping shaft causes the connected flipping assembly 21 (including the flipping frame 203, etc.) to rotate around the flipping shaft, realizing the flipping action of the cardboard.

[0082] A contact sensor is installed on the flipping fixing bracket 23 to detect the flipping position of the flipping frame 23. This sensor can provide a feedback signal when the flipping frame reaches a specific position.

[0083] The baffle assembly includes a baffle drive cylinder, a rotating bracket, and a baffle 202. For ease of demonstration of the flipping frame, in... Figure 5 The diagram does not show the baffle drive cylinder and the rotating bracket. Several baffles are mounted on the first and second synchronous pulley shafts of the upper cardboard synchronous drive assembly. A synchronous pulley is positioned between two adjacent baffles. Each baffle 22 is rotatably engaged with the first synchronous pulley shaft. All baffles 202 are hinged to the rotating bracket, the end of which is hinged to the telescopic rod of the baffle drive cylinder. The baffle drive cylinder is mounted on the flipping frame 23. The middle part of the rotating bracket is hinged to the flipping frame 23. All baffles 22 open and close under the drive of the baffle drive cylinder.

[0084] The working principle of this baffle assembly is as follows: When the cardboard enters the flipping space, the baffle drive cylinder receives a control signal, drives the telescopic rod to extend, and rotates the rotating bracket, causing all baffles 22 to open. After the baffles open, the cardboard, driven by the upper and lower cardboard synchronous drive components, enters the flipping space through the open baffle gaps. Once the cardboard is fully inside the flipping space, the baffle drive cylinder receives another control signal, the telescopic rod retracts, and rotates the rotating bracket, causing the baffles 22 to close, sealing the flipping space. After the baffles close, the flipping space becomes a closed area where the cardboard can flip without interference. The opening and closing of the baffles is usually automatically controlled by the control cabinet according to the working status of the flipping unit, achieving synchronization with the flipping action.

[0085] The palletizing unit has the same structure as the lifting and splitting unit, and both the cardboard input port of the lifting and splitting unit and the cardboard output port of the palletizing unit are equipped with unpowered output rollers 31.

[0086] The working principle of the palletizing unit is as follows:

[0087] Unlike the lifting and splitting unit, which lifts cardboard from low to high, the palletizing unit stacks the flipped cardboard from high to low. Each time a layer of cardboard enters, the cardboard lifting component lowers the thickness of one layer of cardboard until it accumulates to a preset height, and then outputs it through a running conveyor belt.

[0088] An anti-tipping assembly is installed on the splitting bracket of the palletizing unit. The anti-tipping assembly is close to the unpowered output roller 31 and includes an anti-tipping push-pull cylinder 32 and a push-pull plate 33. The push-pull plate 33 corresponds to the splitting plate 16. The bottom end of the push-pull plate 33 is hinged to the splitting bracket 13. The anti-tipping push-pull cylinder 32 is located at the rear of the push-pull plate 33. The cylinder body of the anti-tipping push-pull cylinder 32 is hinged to the splitting bracket 13. The telescopic rod of the anti-tipping push-pull cylinder 32 is hinged to the push-pull plate 33. The push-pull plate 33 is rotated by the anti-tipping push-pull cylinder 32 to limit the movement of the cardboard.

[0089] The working principle of the anti-tipping component is as follows: the push-pull plate 33 corresponds to the split plate 16 of the stacking unit and is used to limit the output of the cardboard to prevent the cardboard from tilting; as the extension rod of the anti-tipping push-pull cylinder 32 moves, the push-pull plate 33 rotates accordingly. When the push-pull plate 33 rotates clockwise, it corresponds to the split plate and limits the cardboard output from the flipping unit to ensure the stability of the cardboard during the output process and prevent it from tilting.

[0090] The working principle of this invention is as follows: Cardboard is automatically transported to the lifting and sorting unit via a conveyor. A splitting component separates the single-layer cardboard and conveys it to the flipping unit. Upon receiving the cardboard, the control cabinet performs a flipping operation according to preset instructions. After the flipping operation is completed, the cardboard is conveyed to the palletizing unit via a clamping synchronous belt. Once the cardboard is in place, the cardboard lifting component of the palletizing unit lowers the cardboard by the corresponding height, and finally, the entire stack of cardboard is arranged and stacked alternately in both directions as required.

[0091] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic flipping system for corrugated cardboard stacks, characterized in that, include: The lifting and splitting unit is used to lift and split cardboard with a preset height, and then convey it to the flipping unit; The flipping unit is used to receive the cardboard from the splitting unit and flip it over. The palletizing unit is used to stack the cardboard after it has been flipped by the flipping unit. The control cabinet is used to control the lifting and splitting unit, the flipping unit, and the palletizing unit. The lifting and splitting unit includes a splitting bracket, a lifting drive motor, a lifting drive shaft, a lifting driven shaft, a cardboard lifting assembly, a chain drive assembly, and a splitting assembly. The cardboard lifting assembly is vertically mounted on the splitting bracket. The lifting drive motor, lifting drive shaft, and lifting driven shaft are also mounted on the splitting bracket. The lifting drive shaft is driven by the lifting drive motor. The lifting driven shaft includes a first lifting driven shaft and a second lifting driven shaft. The first lifting driven shaft is located directly below the lifting drive shaft and is connected to the lifting drive shaft via the chain drive assembly. A cardboard lifting assembly rotates on the splitting bracket on the side away from the lifting drive shaft. The system is equipped with a second driven lifting shaft, which is at the same height as the driving lifting shaft on the splitting bracket and is arranged parallel to each other. The splitting assembly is located on the upper part of the splitting bracket. The chain drive assembly is also connected to the cardboard lifting assembly. When the lifting drive motor rotates, it drives the driving lifting shaft to rotate. This driving lifting shaft, through the chain drive assembly, drives the first and second driven lifting shafts to rotate, thereby driving the cardboard lifting assembly to lift and lower. A proximity sensor is installed on the splitting bracket to detect the cardboard on the cardboard lifting assembly. This proximity sensor is connected to the control cabinet. The cardboard lifting assembly includes a lifting frame, a running conveyor belt, and a conveyor belt drive motor. Guide blocks are provided on both sides of the lifting frame, and these guide blocks slide in cooperation with guide rods mounted on the splitting bracket. Each of the guide rods is arranged vertically. A conveyor belt drive roller is installed on the lifting frame, and the conveyor belt drive roller is driven by the conveyor belt drive motor. The running conveyor belt bypasses the conveyor belt drive roller and is driven by the conveyor belt drive roller. A conveyor cover plate is installed on the lifting frame to shield the conveyor belt drive motor. The splitting assembly includes a splitting drive motor, a splitting drive shaft, a splitting driven shaft, a splitting plate, a splitting transmission sprocket, a third transmission chain, a splitting guide rod, and chain connectors. The splitting drive shaft and the splitting driven shaft are rotatably mounted on the splitting bracket, and the splitting drive shaft is driven by the splitting drive motor. A chain connector is installed on each side of the splitting plate. Two third transmission chains are symmetrically arranged along the splitting plate. One end of each third transmission chain is connected to one side of the chain connector, and the other end passes sequentially around the sprocket on the splitting drive shaft and the sprocket on the splitting driven shaft before connecting to the other side of the chain connector. A splitting guide rod arranged horizontally is installed on each side of the splitting bracket on both sides of the splitting plate, and the splitting plate slides in conjunction with the splitting guide rod.

2. The automatic corrugated cardboard stacking system according to claim 1, characterized in that, The chain drive assembly includes a first drive chain and a second drive chain. The two first drive chains are arranged parallel to each other and spaced apart. One end of each first drive chain is connected to a lifting member on one side of the cardboard lifting assembly, and the other end passes sequentially around a sprocket on the second driven shaft, a sprocket on the driving shaft, and a sprocket on the first driven shaft before connecting to a lifting member on the other side of the cardboard lifting assembly. Two second drive chains are installed between the driving shaft and the first driven shaft. One end of each second drive chain is connected to the upper part of the lifting member, and the other end passes sequentially around a sprocket on the driving shaft and a sprocket on the first driven shaft before connecting to the lower part of the lifting member.

3. The automatic corrugated cardboard stacking system according to claim 1, characterized in that, The flipping unit includes a flipping fixed bracket, a flipping drive assembly, and a flipping component. The flipping component is rotatably mounted on the upper part of the flipping fixed bracket and is driven by the flipping drive assembly. The flipping component includes a flipping frame, a flipping shaft, a mounting bearing seat, an upper cardboard synchronous drive assembly, and a lower cardboard synchronous drive assembly. Two flipping frames are connected together by a connecting rod. A flipping shaft is mounted on the outer side of each flipping frame. Each flipping shaft is rotatably mounted on the flipping fixed bracket via a mounting bearing seat. The upper cardboard synchronous drive assembly is mounted on the upper part of the inner side of the flipping frame, and a lower cardboard synchronous drive assembly corresponding to the upper cardboard synchronous drive assembly is mounted on the lower part of the inner side of the flipping frame. A flipping space for flipping the cardboard is formed between the lower cardboard synchronous drive assembly and the upper cardboard synchronous drive assembly. Baffle assemblies are installed at the cardboard inlet and cardboard outlet of the flipping space.

4. The automatic corrugated cardboard stacking system according to claim 3, characterized in that, The upper and lower paperboard synchronous drive components have the same structure, each including a first synchronous pulley shaft, a second synchronous pulley shaft, synchronous pulleys, and a clamping synchronous belt. The second synchronous pulley shaft and the first synchronous pulley shaft are arranged parallel to each other and form a gap. Several synchronous pulleys are installed on both the second and first synchronous pulley shafts, with a gap between adjacent synchronous pulleys. The synchronous pulleys on the first and second synchronous pulley shafts are connected by a clamping synchronous belt. The first synchronous pulley shaft of the upper paperboard synchronous drive component is driven by a synchronous belt motor, and the second synchronous pulley shafts of the lower and upper paperboard synchronous drive components are connected by a transmission sprocket set. The clamping synchronous belts of the upper and lower paperboard synchronous drive components run in the same direction.

5. The automatic corrugated cardboard stacking system according to claim 4, characterized in that, The aforementioned flip drive assembly includes a flip drive motor, a flip drive gear, and a flip driven gear. The flip driven gear is fixedly mounted on one of the flip shafts. The flip drive motor is fixedly mounted on the flip mounting bracket. The flip drive gear is mounted on the motor shaft of the flip drive motor and meshes with the flip driven gear. A contact sensor for detecting the flip position of the flip frame is mounted on the flip mounting bracket and is connected to the control cabinet. The baffle assembly includes a baffle drive cylinder, a rotating bracket, and baffles. Several baffles are mounted on the first and second synchronous pulley shafts of the upper cardboard synchronous drive assembly. A synchronous pulley is positioned between adjacent baffles. Each baffle is rotatably engaged with the first synchronous pulley shaft. All baffles are hinged to the rotating bracket, the end of which is hinged to the telescopic rod of the baffle drive cylinder. The baffle drive cylinder is mounted on the flipping frame. The middle of the rotating bracket is hinged to the flipping frame. All baffles open and close under the drive of the baffle drive cylinder.

6. The automatic corrugated cardboard stacking system according to claim 5, characterized in that, The palletizing unit has the same structure as the lifting and splitting unit, and both the paperboard input port of the lifting and splitting unit and the paperboard output port of the palletizing unit are equipped with unpowered output rollers.

7. The automatic corrugated cardboard stacking system according to claim 6, characterized in that, An anti-tipping assembly is installed on the splitting bracket of the palletizing unit. The anti-tipping assembly is close to the unpowered output roller and includes an anti-tipping push-pull cylinder and a push-pull plate. The push-pull plate corresponds to the splitting plate, and the bottom end of the push-pull plate is hinged to the splitting bracket. The anti-tipping push-pull cylinder is located at the rear of the push-pull plate, and the cylinder body of the anti-tipping push-pull cylinder is hinged to the splitting bracket. The telescopic rod of the anti-tipping push-pull cylinder is hinged to the push-pull plate. The push-pull plate is rotated by the anti-tipping push-pull cylinder to limit the movement of the cardboard.

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