Liftable and rotatable paper sheet conveying stack position

Abstract

The utility model discloses a kind of paper skin conveying stack position of lifting and rotating, belong to paper product packaging and logistics conveying technical field.The device includes rack, lifting frame, rotating frame, conveying mechanism and drive system.Lifting frame is movably arranged on rack;Rotating frame is rotatably arranged on lifting frame;Conveying mechanism is installed on rotating frame, for carrying and conveying paper skin;Drive system is used to drive lifting frame lifting and rotating frame rotation. Among them, drive system includes the first linear cylinder for driving rotating frame 90 degrees horizontal rotation, and the second linear cylinder for driving lifting frame vertical lifting;Conveying mechanism includes chain conveyor and the conveying motor of driving its forward and reverse operation.The utility model highly integrates conveying, lifting, rotating function, compact structure, solve the problem that existing equipment function is single, layout is long, with the advantages of running smoothly, high efficiency, strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of paper packaging and logistics transportation technology, and in particular to a stacking device for conveying cardboard that can be lifted and adjusted horizontally during the conveying process. Background Technology

[0002] In modern paper processing and logistics warehousing workshops, corrugated cardboard needs to be transferred and stacked between different workstations via continuous automated conveyor lines. As a key piece of equipment connecting different processes, the function of the conveyor stacking station is no longer limited to simple linear transport. To optimize spatial layout and improve production efficiency, production lines often adopt a three-dimensional, multi-directional design. This requires the conveyor stacking station to have height adjustment capabilities to connect with equipment at different elevations, and also to have horizontal turning capabilities to achieve reversal and connection of cardboard between conveyor lines with different flow directions. Therefore, a conveyor stacking station with both lifting and rotating functions is crucial for building flexible and efficient automated production lines.

[0003] Currently, lifting and turning of materials on a conveyor line usually requires a combination of multiple independent devices, with the following common solutions:

[0004] 1. Fixed conveyor with diverter: A fixed conveyor (such as a roller conveyor or chain conveyor) is used to complete the straight conveying, and an independent 90-degree diverter or transfer device is installed at the end or a specific position to achieve reversal. This method requires a large amount of floor space, and there are gaps between the equipment, which may cause the cardboard to jam or shift during transfer. The system integration and coordination are also poor.

[0005] 2. Simple lifting platform and steering wheel separate design: First, a hydraulic or screw-driven lifting platform lifts or lowers the cardboard to the target height. Then, it is manually or mechanically pushed onto an independent rotating platform for steering, and finally transported to the next workstation. This method interrupts the process flow, requires a large number of devices, is costly, and has low efficiency.

[0006] 3. Single-function conveyor equipment: Many conveyor stack products on the market have only one function, such as lifting or rotating. When the production line process requires simultaneous height and direction adjustments, two sets of equipment must be purchased and complexly connected, installed, and debugged. This not only increases the initial investment and equipment footprint, but also increases the complexity of later maintenance and the failure rate.

[0007] In summary, existing conveying solutions generally suffer from problems such as limited functionality, low equipment integration, poor space utilization, and discontinuous process flow. Separating lifting and rotating functions onto two separate devices results in a complex system structure, cumbersome control, and limited transmission efficiency. Furthermore, in high-paced production, the multiple transfers of materials between devices increase the risk of collisions and jams.

[0008] Therefore, those skilled in the art urgently need an integrated solution that can organically integrate the three major functions of conveying, lifting, and rotating into a single equipment unit. This utility model aims to address the aforementioned technical deficiencies by providing a compact, smooth-moving, and easily controlled liftable and rotating conveyor stack, enabling seamless height and direction adjustments of the cardboard during conveying, effectively improving the automation level and layout flexibility of the production line. Summary of the Invention

[0009] The purpose of this invention is to address the problems of existing cardboard conveying stacks, such as limited functionality, low integration, and inability to simultaneously perform lifting and rotation adjustments during conveying, leading to lengthy production line layouts, low efficiency, and large equipment footprints. This invention provides a cardboard conveying stack that can be lifted and rotated. The device aims to highly integrate conveying, lifting, and horizontal rotation functions into a compact unit, achieving seamless reversal and high-level connection of cardboard along the conveying path, thereby significantly improving the space utilization and automation flexibility of the production line.

[0010] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0011] A lifting and rotating cardboard conveying stack includes a frame, a lifting frame, a rotating frame, a conveying mechanism, and a drive system. The lifting frame is movably mounted on the frame and can move vertically up and down relative to the frame; the rotating frame is rotatably mounted on the lifting frame; the conveying mechanism is mounted on the rotating frame and is used to carry and convey cardboard; the drive system is configured to drive the lifting frame to move up and down and drive the rotating frame to move horizontally.

[0012] As a further optimization of this utility model, the drive system includes a first drive mechanism and a second drive mechanism. The first drive mechanism is used to drive the rotating frame to rotate, and it is preferably a first linear cylinder. The first linear cylinder is disposed between the lifting frame and the rotating frame, and its telescopic motion can be converted into the horizontal rotational motion of the rotating frame through a rack and pinion mechanism, a linkage mechanism, or a direct push method, preferably with a rotation angle of 90 degrees. The second drive mechanism is used to drive the lifting frame to lift, and it is preferably a second linear cylinder. The cylinder body of the second linear cylinder is hinged to the frame, and the end of its piston rod is hinged to the lifting frame.

[0013] As a further optimization of this invention, the conveying mechanism includes a chain conveyor and a conveying motor, which can realize the forward or reverse conveying of cardboard. Preferably, four sets of chain conveyors are arranged in parallel to provide more stable support.

[0014] As a further optimization of this utility model, the frame is preferably a ring frame structure, and the lifting frame is set inside the ring frame, which is compact and stable.

[0015] As a further optimization of this utility model, baffles are also provided on both sides of the conveying mechanism to prevent the cardboard from slipping during conveying or turning. Simultaneously, buffer elements can be provided between the lifting frame and the machine frame or at the end of the stroke of the drive mechanism to reduce impact and noise. In addition, position detection sensors can be provided to detect the lifting height of the lifting frame and / or the rotation angle of the rotating frame, achieving precise automated control.

[0016] Compared with the prior art, the present invention has the following significant advantages:

[0017] 1. Highly integrated functions and compact layout: By integrating the lifting frame, rotating frame and conveying mechanism into one unit, the three functions of conveying, lifting and rotating are realized simultaneously in one equipment unit. This replaces the complex process that requires multiple equipment to complete in the past, which greatly saves equipment floor space and optimizes the production line layout.

[0018] 2. Improve conveying efficiency and automation: Cardboard does not need to be transferred and repositioned between multiple devices. Height adjustment, direction change and conveying output can be completed continuously on this device, which greatly shortens the material flow time, reduces waiting and positioning links, and significantly improves the overall conveying efficiency and production automation level.

[0019] 3. Smooth operation and high reliability: Utilizing linear cylinders as the core drive component, power transmission is direct and reliable. In particular, the structure supporting the lifting frame via a ring frame offers high rigidity and smooth operation, effectively ensuring the stability of the cardboard during lifting and rotation, preventing displacement or tipping.

[0020] 4. Simple structure, low cost and maintenance: Compared with solutions using precision components such as servo motors and lead screws, this utility model preferably uses mature and reliable pneumatic components and chain conveyors, which have a simple structure, low manufacturing cost, convenient maintenance and low failure rate, making it very suitable for large-scale application in industrial environments such as paper packaging.

[0021] 5. Excellent safety and adaptability: Side baffles effectively prevent cardboard from falling; buffer elements and position sensors enhance operational safety and control precision. Its lifting and rotating functions allow it to flexibly adapt to interface devices of different heights and orientations, making it suitable for a wide range of applications. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of an embodiment of the lifting and rotating cardboard conveying stack of this utility model;

[0023] Figure 2 This is the front view (or front view) of the paperboard conveying stack that can be raised, lowered, and rotated according to this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1- First linear cylinder, 2- Second linear cylinder, 3- Rotating frame, 4- Lifting frame, 5- Frame, 6- Conveyor motor, 7- Chain conveyor, 8- Baffle, 9- Foot cup. Detailed Implementation

[0026] To make the invention's objectives, technical solutions, and advantages clearer, the implementation methods of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0027] See Figure 1 and Figure 2 The core design concept of the lifting and rotating cardboard conveying stack provided in this embodiment of the utility model is to highly integrate the three major functional modules of conveying, lifting, and rotating into a compact unit. The device mainly includes a frame 5 as the overall support foundation, a lifting frame 4 for vertical movement, a rotating frame 3 for horizontal rotation, a conveying mechanism for conveying cardboard, and a drive system that provides power for all movements.

[0028] The frame 5 is the installation foundation and load-bearing structure of the entire equipment. In the attached drawings, it is usually shown as the base of the equipment or a frame fixed to the ground. It provides guidance and motion reference for the lifting frame 4.

[0029] First implementation: The frame 5 is preferably a 9-ring frame structure. The ring frame has excellent rigidity and stability, and can effectively resist the torsional force caused by off-center load. The frame 5 can be cut from sheet metal with rounded edges and a large through hole in the middle, providing space for the installation and rotation of the lifting frame 4. To ensure the stability of the equipment operation, multiple mounting plates with elongated holes can be installed at the bottom of the base to facilitate a firm connection with the ground using anchor bolts and to allow for fine-tuning of the level.

[0030] Second implementation method: In order to adapt to the installation requirements of different sites, the frame 5 can be designed as a modular structure, for example, by connecting the various profiles with high-strength bolts, which facilitates transportation and on-site assembly.

[0031] Third implementation method: For situations requiring movement or with lighter operating conditions, adjustable feet 9 can be installed at the bottom of the frame 5, or it can be directly integrated into a lockable caster platform to increase the flexibility of the equipment.

[0032] The lifting frame 4 is a key component connecting the frame 5 and the rotating frame 3, and is responsible for supporting the entire upper structure (including the rotating frame 3, the conveying mechanism and the cardboard) to complete the vertical lifting movement.

[0033] like Figure 1 As shown, the lifting frame 4 is preferably a regular polygonal plate structure. A linear guide mechanism is provided between the lifting frame 4 and the frame 5. Preferably, a slider-guide rail mechanism is arranged between the lifting frame 4 and the frame 5 to guide the lifting motion. This guiding method has a low coefficient of friction, smooth movement, and high precision. As an alternative, a combination of an optical shaft and a linear bearing can also be used, or a guide groove can be provided on the frame 5, and guide wheels can be installed on the lifting frame 4 to achieve guidance.

[0034] The second drive mechanism for raising and lowering the lifting frame 4 is preferably a second linear cylinder 2. Its installation method is as follows: the tail end of the cylinder body of the second linear cylinder 2 is hinged to a lower position (such as on the base) of the frame 5 via a pin, and the end of its piston rod is also hinged to the bottom or lower side of the lifting frame 4 via a pin. This hinge method can compensate for minor misalignment problems that may exist during installation and allows for slight oscillation of the cylinder during the lifting process, ensuring good force distribution.

[0035] In an alternative implementation, a hydraulic cylinder can be used instead of the second linear cylinder 2. The hydraulic cylinder provides greater lifting force and is suitable for heavy-duty applications, but it requires a hydraulic power unit, making the system relatively complex.

[0036] Alternatively, in other embodiments, a mechanism using a motor to drive a lead screw and nut can be used to replace the second linear cylinder 2. A servo motor or a geared motor drives the lead screw to rotate, which cooperates with the nut fixed on the lifting frame 4 to convert the rotational motion into linear motion. This method offers high positioning accuracy, but the cost is also relatively high.

[0037] The rotating frame 3 is positioned above the lifting frame 4 and serves as a direct mounting platform for the conveying mechanism. The rotating frame 3 is a rigid structure, preferably composed of two long, strip-shaped frames made of profiles, arranged parallel to each other to stably support the conveying mechanism. The rotating frame 3 is connected to the lifting frame 4 via a slewing bearing (such as a crossed roller bearing or a slewing bearing) or a simple pivot to achieve smooth horizontal rotation.

[0038] Transmission component implementation method one (rack and pinion type): A rack is connected to the end of the piston rod of the first linear cylinder 1. A gear meshing with the rack is installed at the rotation center or eccentric position of the rotating frame 3. The linear motion of the cylinder piston rod drives the rack, the rack drives the gear to rotate, thereby driving the rotating frame 3 to rotate. By reasonably designing the rack stroke and the number of teeth of the gear, the rotation angle can be precisely controlled to 90 degrees.

[0039] Transmission component implementation method two (linkage type): The cylinder body of the first linear cylinder 1 is hinged to the lifting frame 4, and the piston rod end is hinged to an eccentric fulcrum of the rotating frame 3. When the cylinder extends or retracts, it directly pushes the rotating frame 3 to rotate around its center through the linkage principle. By reasonably designing the hinge point position and cylinder stroke, a precise 90-degree rotation angle can be achieved.

[0040] This invention is particularly suitable for reversing traffic flow between bidirectional conveyor lines; therefore, a 90-degree rotation is the most common and preferred implementation. The rotation angle can be precisely stopped at 90 degrees by using mechanical limit blocks (such as stops on the lifting frame 4) or by controlling the stroke of the cylinder.

[0041] The conveying mechanism is the component that directly contacts the cardboard and performs the conveying task. The conveying mechanism mainly includes a chain conveyor 7 and a conveying motor 6.

[0042] The chain conveyor 7 consists of multiple parallel conveyor chains, sprockets, and support shafts. The chain conveyor 7 is arranged vertically (i.e., the conveying direction is perpendicular to the length direction of the rotating frame 3) above the rotating frame 3. Cardboard is placed on the chains, and conveying is achieved through the rotation of the chains.

[0043] The conveyor motor 6 is fixedly mounted on the rotating frame 3, and drives the drive shafts of all chain conveyors 7 to rotate synchronously via chain drive or belt drive. The conveyor motor 6 is preferably a motor that can rotate in both directions to achieve bidirectional conveying of cardboard according to process requirements.

[0044] In addition to chain conveyors, depending on the characteristics of the cardboard (such as weight and bottom surface condition), the conveying mechanism can also be replaced by roller conveyors, belt conveyors or plate chain conveyors.

[0045] To improve the practicality and reliability of the equipment, the following devices can also be integrated into this invention:

[0046] 1. Baffle 8: such as Figure 2 As shown, baffles 8 are provided on both sides of the conveying mechanism.

[0047] Implementation method 1: The baffle 8 is made of metal or polymer plastic and is fixed to the frame 5 by a bracket. Its height is slightly higher than the stacking height of the cardboard.

[0048] Implementation Method 2: The baffle 8 can be adjustable. Through a sliding groove or a series of mounting holes, the spacing between the two baffles 8 can be adjusted according to the width of the cardboard, enhancing adaptability. The baffle 8 effectively prevents the cardboard from shifting or slipping due to inertia or wind force during high-speed conveying, lifting, or rotation, ensuring operational safety.

[0049] 2. Buffer element:

[0050] Implementation method 1: Install a rubber buffer pad or a polyurethane buffer pad at the bottom of the lifting frame 4 or at the position corresponding to the lower limit of the lifting frame 4 on the frame 5 to absorb the impact energy when the lifting frame 4 descends to the end point.

[0051] Implementation Method 2: At the end of the stroke of the first linear cylinder 1 and the second linear cylinder 2, the hydraulic damper built into the cylinder or an external hydraulic damper can be used to smooth the stopping action of the cylinder piston rod and reduce the vibration and noise of the equipment and goods.

[0052] 3. Position detection sensor:

[0053] Implementation Method 1: A magnetic proximity switch is used in conjunction with a magnetic ring on the cylinder to detect the extension and retraction position of the cylinder, thereby indirectly determining the height of the lifting frame 4 and the angle of the rotating frame 3, achieving simple limit position protection.

[0054] Implementation Method 2: An absolute encoder is installed on the rotating shaft of the rotating frame to directly detect the rotation angle; at the same time, a wire encoder is used to measure the absolute height of the lifting frame 4 to achieve precise position control throughout the entire stroke.

[0055] During operation, the equipment operates according to the following procedures:

[0056] 1. Initial material receiving: The conveyor motor 6 drives the chain conveyor 7 to operate and receive cardboard from the upstream equipment.

[0057] 2. Lifting and Adjustment: The second linear cylinder 2 is activated, lifting the lifting frame 4 and all the upper structures, raising the cardboard to the height where it connects with the downstream equipment.

[0058] 3. Rotation and reversal: The first linear cylinder 1 is activated, driving the rotating frame 3 and its conveying mechanism and cardboard to rotate 90 degrees together through the rack and pinion or linkage mechanism, aligning with the downstream conveyor line direction.

[0059] 4. Conveying and discharging: The conveyor motor 6 rotates in reverse to smoothly convey the cardboard to the downstream equipment.

[0060] This invention successfully integrates three major functions into one unit through a compact structure of a "ring-shaped lifting frame with an embedded rotating frame" and a clever drive method that converts linear motion of a cylinder into rotary motion. Compared to existing technologies that use multiple devices connected in series, this invention significantly saves floor space, simplifies the equipment structure and control system, achieves seamless material flow, and significantly improves conveying efficiency and production line layout flexibility. Furthermore, its pneumatic and chain drive technologies are mature and reliable, with low manufacturing and maintenance costs, making it highly suitable for large-scale application in industries such as paper packaging.

[0061] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A lifting and rotating cardboard conveying stack, characterized in that, include: Rack (5); The lifting frame (4) is movably mounted on the frame (5) and can move vertically up and down relative to the frame (5); The rotating frame (3) is rotatably mounted on the lifting frame (4); A conveying mechanism, mounted on the rotating frame (3), is used to carry and convey cardboard; and The drive system is configured to drive the lifting frame (4) to lift and drive the rotating frame (3) to rotate.

2. The lifting and rotating cardboard conveying stack according to claim 1, characterized in that, The drive system includes a first drive mechanism for driving the rotating frame (3) to rotate. The first drive mechanism is a first linear cylinder (1) disposed between the lifting frame (4) and the rotating frame (3). The extension and retraction motion of the first linear cylinder (1) is converted into the horizontal rotation motion of the rotating frame (3) through a transmission component.

3. The lifting and rotating cardboard conveying stack according to claim 2, characterized in that, The rotation angle of the rotating frame (3) is 90 degrees.

4. The lifting and rotating cardboard conveying stack according to claim 1, characterized in that, The drive system includes a second drive mechanism for driving the lifting frame (4) to rise and fall. The second drive mechanism is a second linear cylinder (2). The cylinder body of the second linear cylinder (2) is hinged to the frame (5), and the end of its piston rod is hinged to the lifting frame (4).

5. The lifting and rotating cardboard conveying stack according to claim 1, characterized in that, The conveying mechanism includes at least one chain conveyor (7) and a conveying motor (6), the conveying motor (6) being used to drive the chain conveyor (7) to operate in the forward or reverse direction.

6. The lifting and rotating cardboard conveying stack according to claim 5, characterized in that, There are two rotating frames (3) arranged in parallel on the lifting frame (4), and multiple chain conveyors (7) are arranged vertically above the rotating frames (3).

7. The lifting and rotating cardboard conveying stack according to claim 1, characterized in that, The frame (5) has a ring frame structure, and the lifting frame (4) is set inside the ring frame.

8. The lifting and rotating cardboard conveying stack according to claim 1, characterized in that, It also includes baffles (8) on both sides of the conveying mechanism to prevent the cardboard from falling off during conveying or turning.

9. The lifting and rotating cardboard conveying stack according to claim 2, characterized in that, A buffer element is provided between the lifting frame (4) and the frame (5) and / or at the end of the stroke of the first drive mechanism.

10. The liftable and rotatable cardboard conveying stack according to claim 1, characterized in that, It also includes a position detection sensor for detecting the lifting height of the lifting frame (4) and / or the rotation angle of the rotating frame (3).

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