Heavy duty workstation logistics line system

Abstract

The utility model discloses a heavy -duty workstation logistics production line system, including loading and unloading station, tray buffer station, buffer tray, RGV transport vehicle and track, the track is laid in one side of loading and unloading station with tray buffer station, the track extends to the processing equipment side, RGV transport vehicle sets up on track and reciprocatingly moves along track between loading and unloading station, tray buffer station, processing equipment, buffer tray is used to bear workpiece and place on loading and unloading station, tray buffer station or RGV transport vehicle, and RGV transport vehicle transfers buffer tray to realize the transport of workpiece and the handover between stations. The utility model solves the problems of low processing change efficiency, big artificial transfer strength, poor precision, low equipment utilization in traditional frame manufacturing, and the problem that the existing logistics cannot adapt to multi-workpiece mixed line, continuous operation and intelligent manufacturing.

Description

Technical Field

[0001] This utility model belongs to the field of logistics production line technology, specifically relating to a heavy-duty workbench logistics production line system. Background Technology

[0002] In the machinery manufacturing industry, especially in the field of rail passenger vehicle manufacturing, the bogie is the core running component of high-speed trains and urban rail vehicles. Its manufacturing quality and efficiency directly determine the vehicle's operational safety and production capacity. The frame, as the basic load-bearing component of the bogie, needs to go through many complex processes such as raw material cutting, bending, welding, processing, and painting. It has significant characteristics such as a wide variety of products, complex structures, large production batches, high manufacturing precision requirements, and long process flow, which puts forward stringent requirements for the stability, efficiency, and flexibility of material transmission.

[0003] Currently, bogie manufacturing still largely adopts the traditional single-machine production model, with a high proportion of manual processes in the production process. Product processing and production line changeover efficiency are low, and the flexibility of the assembly process relies heavily on manual labor. Manually transporting heavy-duty bogies is not only labor-intensive but also prone to workpiece positioning deviations due to operational errors, affecting subsequent processing accuracy. Furthermore, frequent manual intervention requires processing equipment to be shut down for extended periods while waiting for materials, making it difficult to improve equipment utilization. This has become a key bottleneck in the entire vehicle manufacturing process, ultimately resulting in high bogie assembly costs, low production efficiency, and poor product quality stability, severely restricting the large-scale and efficient development of the rail passenger vehicle manufacturing industry. Utility Model Content

[0004] To address these issues, this invention provides a heavy-duty workbench logistics production line system that solves the problems of low processing and changeover efficiency, high manual handling intensity and poor precision, low equipment utilization in traditional frame manufacturing, and the inability of existing logistics systems to adapt to multi-workpiece mixed lines, continuous operation and intelligent manufacturing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heavy-duty workbench logistics production line system, including a loading and unloading station, a pallet buffer station, buffer pallets, an RGV transport vehicle, and a track;

[0006] The track is laid on one side of the loading and unloading station and the pallet buffer station, and the track extends to the side of the processing equipment. The RGV transport vehicle is set on the track and moves back and forth between the loading and unloading station, the pallet buffer station and the processing equipment along the track.

[0007] The buffer pallet is used to carry the workpiece and place it on the loading and unloading station, the pallet buffer station, or the RGV transport vehicle. The RGV transport vehicle transfers the buffer pallet to realize the transportation of the workpiece and the handover between workstations.

[0008] As a preferred solution for a heavy-duty workbench logistics production line system, the RGV transport vehicle includes control components, drive components, transmission components, and guide rail components;

[0009] The driving component and the transmission component are both electrically connected to the control component. The transmission component is in transmission cooperation with the driving component. The guide rail component is adapted to the transmission component to support and assist the movement of the buffer tray and the workpiece.

[0010] As a preferred solution for a heavy-duty workbench logistics production line system, the control component is an electrical cabinet, which integrates a programmable logic controller (PLC). The PLC is electrically connected to the drive component and is used to regulate the operating status of the drive component.

[0011] As a preferred solution for a heavy-duty workbench logistics production line system, the drive component includes an X-axis servo planetary reducer and a Y-axis servo planetary reducer. The X-axis servo planetary reducer and the Y-axis servo planetary reducer are electrically connected to the control component. The X-axis servo planetary reducer and the Y-axis servo planetary reducer work independently or in concert to provide driving force in the X and Y directions.

[0012] As a preferred solution for a heavy-duty workbench logistics production line system, the transmission components include hydraulic cylinders, ball screws, and screw guide rails.

[0013] The ball screw is adapted to the screw guide rail, the hydraulic cylinder is linked to the ball screw, and both the hydraulic cylinder and the ball screw are electrically connected to the control component.

[0014] As a preferred solution for a heavy-duty workbench logistics production line system, the output end of the hydraulic cylinder is connected to one end of the ball screw via a coupling.

[0015] As a preferred solution for a heavy-duty workbench logistics production line system, the guide rail component includes a horizontal pallet movement guide rail pair and a Y-axis pallet movement guide rail pair; there are four horizontal pallet movement guide rail pairs, each of which is composed of several roller bearing pairs; there are two Y-axis pallet movement guide rail pairs, which slide in cooperation with the four horizontal pallet movement guide rail pairs to jointly assist in buffering the movement of the pallet and workpiece.

[0016] As a preferred solution for a heavy-duty workbench logistics production line system, the pallet movement horizontal guide rail pairs are symmetrically distributed, and the number of roller bearing pairs on each pallet movement horizontal guide rail pair is not less than 16.

[0017] As a preferred solution for a heavy-duty workbench logistics production line system, the loading and unloading station is equipped with a workpiece loading and unloading station, and the workpiece loading and unloading station has a positioning structure on its table surface, which is adapted to the buffer tray.

[0018] The pallet buffer station stores the buffer pallets containing workpieces that are to be processed or have already been processed;

[0019] The base of the track is composed of several base pairs spliced ​​together.

[0020] The beneficial effects of this utility model are as follows:

[0021] First, by using RGV transport vehicles to automatically transfer buffer pallets between loading and unloading stations, pallet buffer stations and processing equipment along the track, the traditional manual transfer and single-machine production mode is replaced, reducing the waiting time caused by manual intervention. At the same time, it realizes multi-station collaborative linkage, significantly shortens product processing and production line changeover time, effectively solves the problems of long equipment downtime and low utilization rate, and breaks through the bottleneck of vehicle manufacturing.

[0022] Secondly, heavy-duty workpieces are carried by buffer pallets and automatically transferred by RGV transport vehicles, avoiding the high-intensity manual handling of heavy-duty workpieces; and the positioning structure of the loading and unloading station, the guide rail components of the RGV transport vehicle and the buffer pallets are compatible, reducing human operation errors, ensuring accurate handover of workpieces between workstations, and improving the stability of subsequent processing quality.

[0023] Third, the system integrates loading, unloading, buffering, and transfer functions. The RGV transport vehicle can move flexibly through the control components and can adapt to mixed production of at least three different workpieces. The pallet buffer station can buffer and store workpieces to be processed or already processed, avoiding gaps in process connections and meeting the flexible manufacturing needs of multiple varieties and large quantities, such as rail passenger car frames.

[0024] Fourth, the programmable logic controller of the control component enables automated control of the RGV transport vehicle, reducing the number of operators required for processing equipment and facilitating unmanned operation; the track base adopts a splicing design and is adapted to heavy-duty working conditions, extending the service life of the equipment and reducing later maintenance costs, which is in line with the national intelligent manufacturing plan and the enterprise's needs for cost reduction and efficiency improvement. Attached Figure Description

[0025] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0027] Figure 1 This is a schematic diagram of the heavy-duty workbench logistics production line system provided in this embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the RGV transport vehicle structure in the heavy-duty workbench logistics production line system provided in this embodiment of the utility model;

[0029] Figure 3 This is a schematic diagram of the RGV transport vehicle and track combination provided in the embodiments of this utility model.

[0030] In the diagram: 1. Loading and unloading station; 2. Pallet buffer station; 3. Buffer pallet; 4. RGV transport vehicle; 5. Track; 6. Electrical cabinet; 7. X-axis servo planetary reducer; 8. Y-axis servo planetary reducer; 9. Hydraulic cylinder; 10. Ball screw; 11. Screw guide rail; 12. Pallet motion horizontal guide rail pair; 13. Y-axis pallet motion guide rail pair. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] See Figure 1 , Figure 2 and Figure 3 This utility model provides a heavy-duty workbench logistics production line system, including a loading and unloading station 1, a pallet buffer station 2, a buffer pallet 3, an RGV transport vehicle 4, and a track 5. The track 5 is laid on one side of the loading and unloading station 1 and the pallet buffer station 2, and extends to the side of the processing equipment. The RGV transport vehicle 4 is set on the track 5 and moves back and forth between the loading and unloading station 1, the pallet buffer station 2, and the processing equipment along the track 5. The buffer pallet 3 is used to carry workpieces and place them on the loading and unloading station 1, the pallet buffer station 2, or the RGV transport vehicle 4. The RGV transport vehicle 4 transfers the buffer pallet 3 to realize the transportation of workpieces and the handover between workstations.

[0033] Among them, loading / unloading station 1 and pallet buffer station 2 are the initial / buffer stations for materials, and track 5 serves as the fixed movement path of RGV transport vehicle 4, connecting the two with the processing equipment to form a complete material flow link of loading / unloading, buffering, and processing. RGV transport vehicle 4 moves back and forth along track 5, which can connect to each station, avoiding the problems of randomness and low efficiency of traditional manual transfer. Buffer pallet 3 serves as the carrier for workpieces, unifying the material placement standards of each station and ensuring the stability of the workpieces during loading / unloading, buffering, and transfer. Finally, through the combination of fixed path, standardized carrier, and automatic transfer, efficient and stable handover of workpieces between different stations is achieved, breaking the material flow disconnect problem of traditional single-machine production.

[0034] In this embodiment, the RGV transport vehicle 4 includes a control component, a drive component, a transmission component, and a guide rail component; the drive component and the transmission component are electrically connected to the control component, the transmission component and the drive component are in transmission cooperation, and the guide rail component is adapted to the transmission component to carry and assist the movement of the buffer tray 3 and the workpiece.

[0035] Specifically, the control unit sends power commands to the drive unit and power transmission control commands to the transmission unit via electrical connection; the drive unit converts electrical energy into mechanical energy to provide a power source for transfer; the transmission unit converts the power of the drive unit into a motion form that can be received by the guide rail component; the guide rail component carries the buffer tray 3 and achieves precise movement under the drive of the transmission component, ensuring that the RGV transport vehicle 4 can flexibly adjust its movement state according to needs, meet the docking accuracy requirements of different workstations, and at the same time ensure the operational stability under heavy load conditions.

[0036] In this embodiment, the control component is an electrical cabinet 6, which integrates a programmable logic controller (PLC). The PLC is electrically connected to the drive component and is used to regulate the operating status of the drive component.

[0037] Specifically, the programmable logic controller (PLC) can be pre-programmed with control programs adapted to different transfer scenarios, such as parameters like the RGV transport vehicle 4's moving speed, start / stop timing, and docking position at the workstation. When the system is running, the PLC collects real-time operating data from the drive components via electrical connections and sends electrical signals to the drive components according to the preset program, precisely controlling their start / stop, speed, and direction. When the RGV transport vehicle 4 approaches the processing equipment, the PLC sends a "decelerate-stop" signal to ensure smooth docking; when a change in transfer path is needed, the PLC adjusts the steering signals of the drive components to achieve direction switching. This automated control mode avoids human error and improves the operating accuracy and response speed of the RGV transport vehicle 4.

[0038] In this embodiment, the driving components include an X-axis servo planetary reducer 7 and a Y-axis servo planetary reducer 8. The X-axis servo planetary reducer 7 and the Y-axis servo planetary reducer 8 are electrically connected to the control components. The X-axis servo planetary reducer 7 and the Y-axis servo planetary reducer 8 work independently or in concert to provide driving force in the X and Y directions.

[0039] Specifically, the X-axis servo planetary reducer 7 corresponds to X-axis movement along the extension direction of track 5, and the Y-axis servo planetary reducer 8 corresponds to Y-axis movement perpendicular to track 5. Both receive commands from the control unit via electrical connection: when only transport along track 5 is required, the X-axis reducer operates independently, while the Y-axis reducer is on standby; when the Y-axis position of the buffer tray 3 on the RGV transport vehicle 4 needs to be adjusted for docking with the workstation, the Y-axis reducer operates independently; when complex actions such as oblique fine-tuning are required, both work together, and the control unit ensures precise movement trajectory by adjusting the speed ratio of the two. The servo planetary reducer combines the high precision of servo control with the high torque characteristics of planetary reduction, meeting the power requirements of heavy-duty workpieces while ensuring movement accuracy and preventing workpiece displacement.

[0040] In this embodiment, the transmission components include a hydraulic cylinder 9, a ball screw 10, and a screw guide rail 11; the ball screw 10 is adapted to the screw guide rail 11, the hydraulic cylinder 9 is linked to the ball screw 10, and both the hydraulic cylinder 9 and the ball screw 10 are electrically connected to the control components. The output end of the hydraulic cylinder 9 is connected to one end of the ball screw 10 via a coupling.

[0041] Specifically, the ball screw 10 is adapted to the screw guide rail 11, using the rolling friction of the balls to replace the traditional sliding friction, reducing power loss while improving transmission accuracy. The power of the drive component drives the ball screw 10 to rotate, which can be converted into linear motion, driving the guide rail component to move. The hydraulic cylinder 9 is linked to the ball screw 10 through a coupling. Under heavy load conditions, the power of the ball screw 10 alone may not be enough to provide sufficient thrust. The hydraulic cylinder 9 can output hydraulic thrust according to the instructions of the control component, which is superimposed on the power of the ball screw 10 to ensure that the buffer tray 3 and the heavy-duty workpiece can move smoothly. Both are electrically connected to the control component, which can dynamically adjust the oil pressure of the hydraulic cylinder 9 and the rotation speed of the ball screw 10 to achieve the matching of transmission strength and workpiece weight, avoiding overload damage or insufficient power.

[0042] In this embodiment, the guide rail component includes a horizontal pallet movement guide rail pair 12 and a Y-axis pallet movement guide rail pair 13. There are four horizontal pallet movement guide rail pairs 12, each composed of several roller bearing pairs. There are two Y-axis pallet movement guide rail pairs 13, which slide in conjunction with the four horizontal pallet movement guide rail pairs 12 to jointly assist in the movement of the buffer pallet 3 and the workpiece. The horizontal pallet movement guide rail pairs 12 are symmetrically distributed, and each horizontal pallet movement guide rail pair 12 has at least 16 roller bearing pairs.

[0043] Specifically, the four horizontal guide rail pairs 12 of the pallet movement are distributed in parallel, providing basic horizontal support for the buffer pallet 3. The roller bearing pairs formed by them utilize the principle of rolling friction to reduce the friction between the buffer pallet 3 and the guide rails, allowing the pallet to move easily in the horizontal direction. The buffer pallet 3 can achieve position adjustment in any two-dimensional plane on the RGV transport vehicle 4, ensuring accurate docking with the loading and unloading station 1, the pallet buffer station 2 and the workstation interface of the processing equipment, avoiding difficulties in workpiece handover caused by workstation misalignment.

[0044] When the buffer tray 3 carries a heavy workpiece, the weight is evenly distributed to the four symmetrically distributed horizontal guide rail pairs 12, which avoids deformation or wear of a single guide rail pair due to concentrated force and extends the service life of the guide rail. Each horizontal guide rail pair 12 is equipped with no less than 16 roller bearing pairs. The dense support points can reduce the bending deformation of the buffer tray 3 caused by heavy load, ensure that the tray is always in a horizontal state, avoid the workpiece from shifting or colliding due to the tilt of the tray, and at the same time reduce local wear between the tray and the guide rail, further ensuring the stability and accuracy of the movement process.

[0045] In this embodiment, the loading and unloading station 1 is provided with a workpiece loading and unloading station, and the workpiece loading and unloading station platform is provided with a positioning structure, which is adapted to the buffer tray 3; the tray buffer station 2 stores the buffer tray 3 with workpieces to be processed or processed; the base of the track 5 is composed of several base pairs spliced ​​together.

[0046] Specifically, the workpiece loading and unloading station 1 is a key location for the initial placement and final unloading of workpieces. The positioning structure on the table is compatible with the buffer tray 3, enabling precise positioning of the buffer tray 3 and preventing offset when manually placing the tray, ensuring that the RGV transport vehicle 4 can smoothly dock and retrieve the tray. The tray buffer station 2 stores buffer trays 3 with workpieces to be processed or already processed, balancing the production rhythm of each process. When the processing equipment is busy, workpieces to be processed can be temporarily stored in the buffer station to avoid accumulation in loading and unloading station 1; when the processing equipment is idle, the buffer station can quickly provide workpieces, avoiding equipment downtime and ensuring continuous and stable production. The base of the track 5 is composed of several base sub-assemblies. On the one hand, it is convenient to flexibly adjust the length and direction of the track 5 according to the production line layout to adapt to different workshop spaces; on the other hand, the splicing structure can distribute the overall force of the track 5, preventing deformation of the track 5 due to uneven ground or heavy load, and ensuring that the RGV transport vehicle 4 runs smoothly along the track 5.

[0047] The working principle of this utility model is as follows:

[0048] After the system starts, the programmable logic controller (PLC) of the control unit loads the preset program, which determines the transfer path, moving speed, and workstation docking parameters of the RGV transport vehicle 4. When the loading and unloading station 1 completes the placement of the workpiece on the buffer pallet 3, the positioning structure of the loading and unloading station 1 precisely limits the buffer pallet 3 and sends a "waiting for transfer" signal to the PLC; or when the processing equipment completes the processing of the workpiece, it sends a "receive workpiece" signal to the PLC, triggering the RGV transport vehicle 4 to start the transfer task.

[0049] After receiving the signal, the PLC sends an electrical signal to the drive unit of the RGV transport vehicle 4, controlling it to start and move along the track 5 towards the target workstation. When approaching the target workstation, the PLC adjusts the X-axis servo planetary reducer 7 to reduce speed, ensuring that the RGV transport vehicle 4 stops smoothly. If it is necessary to fine-tune the Y-axis position to align with the buffer pallet 3, the PLC sends a command to the Y-axis servo planetary reducer 8 to drive the RGV transport vehicle 4 to move in the Y-axis, so that the guide rail components are precisely aligned with the positioning structure of the loading and unloading station 1, preparing for the retrieval and placement of the buffer pallet 3.

[0050] After docking, the PLC sends a command to the transmission components: the hydraulic cylinder 9 starts and drives the ball screw 10 to rotate through the coupling. The ball screw 10 is adapted to the screw guide rail 11, converting the rotational power into linear motion, driving the guide rail components to move in a preset direction; the pallet movement horizontal guide rail pair 12 of the guide rail components cooperates with the Y-axis pallet movement guide rail pair 13, driving the load-bearing structure to extend under the buffer pallet 3, or pulling the buffer pallet 3 into the RGV transport vehicle 4. Throughout the process, the PLC monitors the hydraulic pressure of the hydraulic cylinder 9 and the rotational speed of the ball screw 10 in real time to ensure that the power output is adapted to the weight of the buffer pallet 3 and the workpiece, avoiding jamming caused by overload or insufficient power.

[0051] After the buffer tray 3 is fixed to the RGV transport vehicle 4, the PLC controls the X-axis servo planetary reducer 7 to start, driving the RGV transport vehicle 4 to move along the track 5 towards the processing equipment. Upon reaching the side of the processing equipment, the workstation docking process is repeated: through the coordinated control of the X and Y-axis servo planetary reducers 8, the RGV transport vehicle 4 is precisely aligned with the workpiece interface of the processing equipment; subsequently, the transmission components move again, pushing the buffer tray 3 onto the worktable of the processing equipment via the guide rail components, completing the workpiece handover. If there is a need to buffer workpieces to be processed, the RGV transport vehicle 4 can first transfer the workpieces to be processed to the tray buffer station 2 for temporary storage, and then transfer them again when the processing equipment is idle.

[0052] After the workpiece handover is completed, the processing equipment or pallet buffer station 2 sends a "handover complete" signal to the PLC. The PLC records the current transfer task status and starts the next round of transfer according to the next instruction. At the same time, the splicing structure of the base of track 5 ensures the smooth operation of RGV transport vehicle 4 throughout the process. The symmetrical distribution of the pallet movement horizontal guide rail pair 12 and the multi-roller bearing pair design ensure that the buffer pallet 3 remains horizontal and stable during transfer, ultimately realizing continuous automated operation of loading, unloading, buffering, and processing without manual intervention.

[0053] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A heavy duty workbench logistics line system, characterized by, It includes a loading and unloading station (1), a pallet buffer station (2), buffer pallets (3), RGV transport vehicles (4), and rails (5); The track (5) is laid on one side of the loading and unloading station (1) and the pallet buffer station (2). The track (5) extends to the side of the processing equipment. The RGV transport vehicle (4) is set on the track (5) and moves back and forth between the loading and unloading station (1), the pallet buffer station (2) and the processing equipment along the track (5). The buffer pallet (3) is used to carry the workpiece and place it on the loading and unloading station (1), the pallet buffer station (2) or the RGV transport vehicle (4). The RGV transport vehicle (4) transfers the buffer pallet (3) to realize the transportation of the workpiece and the handover between workstations.

2. The heavy duty workbench logistics line system of claim 1, wherein, The RGV transport vehicle (4) includes a control component, a drive component, a transmission component, and a guide rail component; The driving component and the transmission component are both electrically connected to the control component. The transmission component is in transmission cooperation with the driving component. The guide rail component is adapted to the transmission component to support and assist the movement of the buffer tray (3) and the workpiece.

3. The heavy duty workbench logistics line system of claim 2, wherein, The control component is an electrical cabinet (6), which integrates a programmable logic controller (PLC). The PLC is electrically connected to the drive component and is used to regulate the operating status of the drive component.

4. The heavy table logistics line system of claim 2, wherein, The drive component includes an X-axis servo planetary reducer (7) and a Y-axis servo planetary reducer (8). The X-axis servo planetary reducer (7) and the Y-axis servo planetary reducer (8) are electrically connected to the control component. The X-axis servo planetary reducer and the Y-axis servo planetary reducer work independently or in concert to provide driving force in the X and Y directions.

5. The heavy table logistics line system of claim 2, wherein, The transmission components include a hydraulic cylinder (9), a ball screw (10), and a screw guide rail (11); The ball screw (10) is adapted to the screw guide rail (11), the hydraulic cylinder (9) is linked to the ball screw (10), and both the hydraulic cylinder (9) and the ball screw (10) are electrically connected to the control component.

6. The heavy table logistics line system of claim 5, wherein, The output end of the hydraulic cylinder (9) is connected to one end of the ball screw (10) via a coupling.

7. The heavy-duty workbench logistics production line system according to claim 2, characterized in that, The guide rail component includes a pallet movement horizontal guide rail pair (12) and a Y-axis pallet movement guide rail pair (13); there are four pallet movement horizontal guide rail pairs (12), each of which is composed of several roller bearing pairs; there are two Y-axis pallet movement guide rail pairs (13), which slide in cooperation with the four pallet movement horizontal guide rail pairs (12) to jointly assist in the movement of the buffer pallet (3) and the workpiece.

8. The heavy table logistics line system of claim 7, wherein, The pallet movement horizontal guide rail pairs (12) are symmetrically distributed, and each pallet movement horizontal guide rail pair (12) has no less than 16 roller bearing pairs.

9. The heavy table logistics line system of claim 2, wherein, The loading and unloading station (1) is provided with a workpiece loading and unloading station. The workpiece loading and unloading station has a positioning structure on its table surface. The positioning structure is adapted to the buffer tray (3). The tray buffer station (2) stores the buffer tray (3) with workpieces to be processed or processed; The base of the track (5) is composed of several base sub-assemblies.

Images