An RFID-based seat pallet stacking and return system

Abstract

The present application relates to an RFID-based seat pallet stacking and returning system. Since the pallet storage area includes multiple sub-storage areas separated by upper and lower spaces, each sub-storage area can store one type of seat pallet; the pallet allocation area first identifies the supplier code of each seat pallet to obtain identification information; then the multiple seat pallets are classified and stacked according to the identification information, and after each group of seat pallet groups is formed, the group of seat pallet groups is transferred to the corresponding sub-storage area; this process can be repeated to classify all seat pallet groups, and finally stored in the form of classified and grouped seat pallet groups in the pallet storage area, so that multiple seat pallets can be automatically stacked, multiple suppliers' pallets can be automatically allocated and automatically docked for returning and storing, which greatly reduces logistics and transportation costs and improves production line efficiency.

Description

Technical Field

[0001] The present application relates to the field of automobile assembly technology, and in particular to an RFID-based seat tray stacking and returning system. Background Art

[0002] At present, when automobile mainframe factories are producing, seat assembly stations mostly use seat conveyor lines to carry out synchronous seat distribution and supply. Most of them can only meet the seat supply and seat pallet return of one supplier, and most of them use the single pallet return conveying form. The main reason is that when pallets of multiple suppliers are returned at the same time, they need to be classified and stacked according to different categories, which is difficult to achieve. Therefore, the technology for classification to meet the order of return of multiple suppliers and return multiple pallets at a time has not yet been developed. In particular, when the seats are returned, they need to be transported by a single pallet roller. This method has low operating efficiency and high transportation cost per vehicle, which is not conducive to the logistics cost control of seats for mainframe factories with high-beat and multi-model mixed flows. Summary of the Invention

[0003] The embodiment of the present application provides an RFID-based seat pallet stacking and returning system to solve the problems in the related art of low operating efficiency and high single-vehicle transportation cost caused by conveying seats through a single pallet roller when returning seats.

[0004] In a first aspect, a seat tray stacking and emptying system based on RFID is provided, comprising:

[0005] a tray storage area comprising a plurality of sub-storage areas spaced apart vertically, each sub-storage area storing a type of seat tray;

[0006] a pallet allocation area for identifying the supplier code of each seat pallet to obtain identification information; then classifying and stacking the plurality of seat pallets according to the identification information, and transferring each seat pallet group to a corresponding sub-storage area after forming the seat pallet group;

[0007] The seat tray groups have the same number and type of seat trays, and the seat tray groups in different groups may be of the same or different types.

[0008] In some embodiments, the pallet distribution area includes a distribution elevator, a pallet stacker, and a transfer conveyor line;

[0009] The pallet stacker is provided with an RFID reader / writer head for identifying the supplier code of each seat pallet, and classifies and stacks the multiple seat pallets according to the identification information;

[0010] The transfer conveyor line is used to receive the seat pallet group from the pallet stacker after each seat pallet group is formed, and send the type information of the seat pallet group to the distribution elevator;

[0011] The distribution elevator is used to receive the seat pallet group and type information delivered by the transfer conveyor line, and adjust the height of its transport roller according to the type information of the seat pallet group to transfer the seat pallet group to the corresponding sub-storage area.

[0012] In some embodiments, the pallet stacker comprises:

[0013] The main frame of the stacker is divided into a stacking space and an identification and transportation space, which are connected to each other. The identification and transportation space is equipped with a vertical lifting cylinder, and the top of the vertical lifting cylinder is connected to the conveyor line docking roller. The conveyor line docking roller is equipped with an RFID reader. The length of the conveyor line docking roller is equal to the length of the main frame of the stacker.

[0014] a height judgment induction switch, which is arranged on the inner top of the stacking accommodating space;

[0015] A tray locking assembly is installed in the stacking accommodating space to restrict the seat tray in the stacking accommodating space from moving downward into the identification transport space.

[0016] In some embodiments, the tray locking assembly includes:

[0017] Two mounting seats are spaced apart, and the connecting line between the two is perpendicular to the movement direction of the vertical lifting cylinder in the vertical plane; the mounting seats are provided with coaxial slide rails and fixed blocks; the fixed blocks are provided with a horizontal cylinder;

[0018] A slider is slidably arranged on the slide rail, and the output shaft of the horizontal cylinder is fixedly connected to the slider; the slider is closer to the central axis of the vertical lifting cylinder than the horizontal cylinder;

[0019] The rotating tray baffle member is hinged on the slider member and rotates within a designed range.

[0020] In some embodiments, the top of the slider member has a bearing seat; a rotating shaft is provided in the bearing seat, and two first limit blocks with an included angle of 90 degrees are provided on the outside of the bearing seat;

[0021] One end of the rotating tray baffle is connected to the rotating shaft and has a second limit block moving between two first limit blocks.

[0022] In some embodiments, the transfer conveyor line and the pallet locking assembly are located in the same horizontal plane and include a first pallet group conveyor roller and a second pallet group conveyor roller;

[0023] The height of the conveying roller of the first pallet group is the same as the maximum height of the conveyor line docking roller after being jacked up, and is used to receive the seat pallet group; the transport direction of the conveying roller of the second pallet group is perpendicular to the transport direction of the conveying roller of the first pallet group, and is used to transfer the seat pallet group from the conveying roller of the first pallet group to the distribution elevator.

[0024] In some embodiments, a height detection switch is provided on a side of each sub-storage area close to the distribution elevator;

[0025] Before transferring the seat pallet group, the transport roller of the distribution elevator first selects the height detection switch at the target position according to the type information. After the height detection switch is determined, the height detection switches at other positions are shielded; then the height detection switch at the target position is used to detect the transport roller moving from top to bottom; when the transport roller is detected, the transport roller stops moving downward so that it is parallel to the corresponding sub-storage area.

[0026] In some embodiments, the sub-storage area includes a plurality of transport rollers located on the same horizontal plane;

[0027] The pallet storage area further comprises a plurality of frame structures distributed along the transport direction of the sub-storage area, the frame structure comprises a plurality of layers, and each layer is provided with a transport roller.

[0028] In some embodiments, a pallet retrieval area is further included, and the pallet retrieval area is used to select and use one of the seat pallet groups in the pallet storage area.

[0029] In some embodiments, the pallet retrieval area includes a retrieval elevator and a logistics vehicle docking roller; the structure of the retrieval elevator is the same as that of the distribution elevator; the retrieval elevator is used to move the transport roller to the corresponding sub-storage area position according to the type of seat pallet group to be picked up; and then move down to the logistics vehicle docking roller.

[0030] The beneficial effects of the technical solution provided by this application include:

[0031] An embodiment of the present application provides an RFID-based seat pallet stacking and returning system. Since the pallet storage area includes multiple sub-storage areas spaced above and below, each sub-storage area can store one type of seat pallet; the pallet allocation area first identifies the supplier code of each seat pallet to obtain identification information; then the multiple seat pallets are classified and stacked according to the identification information, and after each group of seat pallet groups is formed, the group of seat pallet groups is transferred to the corresponding sub-storage area; this process can be repeated to classify all seat pallet groups, and finally stored in the form of classified and grouped seat pallet groups in the pallet storage area. In this way, automatic stacking of multiple seat pallets, automatic allocation of pallets from multiple suppliers and automatic docking and returning storage can be achieved, which greatly reduces logistics and transportation costs and improves production line efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 A schematic diagram of an RFID-based seat tray stacking and emptying system provided in an embodiment of the present application;

[0034] Figure 2 A front view of a pallet stacker provided in an embodiment of the present application;

[0035] Figure 3 A side view of a pallet stacker provided in an embodiment of the present application;

[0036] Figure 4 A top view of the conveyor line docking roller provided in an embodiment of the present application;

[0037] Figure 5 A schematic structural diagram of a rotating tray baffle member provided in an embodiment of the present application;

[0038] Figure 6 A schematic diagram of the workflow of the RFID-based seat tray stacking and returning system provided in an embodiment of the present application.

[0039] In the figure: 1. Pallet distribution area; 100. Distribution elevator; 101. Pallet stacker; 10100. Stacker main frame; 10101. Vertical lifting cylinder; 10102. Conveyor line docking roller; 10103. Height judgment sensor switch; 10104. Pallet locking assembly; 101041. Mounting seat; 101042. Slide rail; 101043. Fixed block; 101044. Slider member; 101045. Horizontal cylinder; 101046. Rotating pallet baffle member; 101047. First limit block; 101048. Second limit block; 101049. Bearing seat; 2. Pallet storage area; 200. Sub-storage area; 3. Pallet retrieving area; 300. Retrieving elevator; 301. Logistics vehicle docking roller. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] Empty pallets are returned to be reused. However, due to the influence of usage, the returned empty pallets are mixed with different types. When they are reused, they need to be searched among multiple empty pallets. This process is relatively cumbersome. If multiple types of pallets are returned and stored separately, instead of just one return line recycling only one type of pallet, the purpose achieved by this application is to have a return and recycling production line that can return and store multiple types of pallets.

[0042] The embodiment of the present application provides an RFID-based seat pallet stacking and returning system to solve the problems of low operating efficiency and high single-vehicle transportation cost caused by the single-pallet roller conveyor when returning seats in the related art.

[0043] Please refer to Figure 1 , a seat tray stacking and returning system based on RFID, comprising:

[0044] The tray storage area 2 includes a plurality of sub-storage areas 200 spaced apart from each other, each sub-storage area 200 storing a type of seat tray;

[0045] The pallet distribution area 1 is used to identify the supplier code of each seat pallet to obtain identification information; then, the plurality of seat pallets are sorted and stacked according to the identification information, and after each seat pallet group is formed, the group of seat pallets is transferred to the corresponding sub-storage area 200;

[0046] The seat tray groups have the same number and type of seat trays, and the seat tray groups of different groups may have the same or different types.

[0047] When in use, the pallet distribution area 1 first identifies the supplier code of each seat pallet to obtain identification information; then, multiple seat pallets are classified and stacked according to the identification information, and after each group of seat pallet groups is formed, the group of seat pallet groups is transferred to the corresponding sub-storage area 200; that is, if the number of seat pallets in each group of seat pallet groups is 4 and there are three sub-storage areas 200, after stacking four seat pallets, they are immediately transferred to the sub-storage area 200, and then the next stacking is carried out. The type of seat pallets stacked in the next stacking may be the same as or different from the previous one.

[0048] By repeating the above process, all seat pallet groups can be classified and finally stored in the form of seat pallet groups in pallet storage area 2. This can realize the automatic stacking of multiple seat pallets, automatic allocation of pallets from multiple suppliers and automatic docking and empty storage, greatly reducing logistics and transportation costs and improving production line efficiency.

[0049] In some preferred embodiments, the specific structure of the tray distribution area 1 is introduced:

[0050] The pallet distribution area 1 includes a distribution elevator 100, a pallet stacker 101 and a transfer conveyor line;

[0051] The pallet stacker 101 is equipped with an RFID reader / writer head for identifying the supplier code of each seat pallet, and classifies and stacks multiple seat pallets according to the identification information;

[0052] The transfer conveyor line is used to receive the seat pallet group from the pallet stacker 101 after each seat pallet group is formed, and send the type information of the seat pallet group to the distribution elevator 100;

[0053] The allocation elevator 100 is used to receive the seat pallet group and type information delivered by the transfer conveyor line, and adjust the height of its transport roller according to the type information of the seat pallet group to transfer the seat pallet group to the corresponding sub-storage area 200.

[0054] In the above process, the type information of the seat pallet groups is used to adjust the height of the transport roller of the distribution elevator 100, so that different types of seat pallet groups can be transferred to the corresponding pallet storage area 2 to achieve classified storage.

[0055] For further reference, Figure 2-Figure 5 , the pallet stacker 101 comprises:

[0056] The stacker main frame 10100 has an interior space divided into an upper and lower connected stacking accommodating space and an identification and transportation space. The identification and transportation space is provided with a vertical lifting cylinder 10101, the top of which is connected to a conveyor line docking roller 10102. The conveyor line docking roller 10102 is provided with an RFID reader / writer head. The length of the conveyor line docking roller 10102 is equal to the length of the stacker main frame 10100.

[0057] A height determination induction switch 10103 is provided on the inner top of the stacking accommodation space;

[0058] The tray locking assembly 10104 is installed in the stacking accommodating space to restrict the seat tray in the stacking accommodating space from moving downward into the identification transport space.

[0059] The tray locking assembly 10104 includes:

[0060] Two mounting seats 101041 are spaced apart, and the line connecting the two is perpendicular to the movement direction of the vertical lifting cylinder in the vertical plane; the mounting seats 101041 are provided with a coaxial slide rail 101042 and a fixed block 101043; the fixed block 101043 is provided with a horizontal cylinder 101045;

[0061] The slider 101044 is slidably mounted on the slide rail 101042. The output shaft of the horizontal cylinder 101045 is fixedly connected to the slider 101044. The slider 101044 is closer to the center axis of the vertical lifting cylinder than the horizontal cylinder 101045.

[0062] The rotating tray baffle 101046 is hinged on the slider 101044 and rotates within the design range. The top of the slider 101044 has a bearing seat 101049; the bearing seat 101049 has a rotating shaft, and the outer side of the bearing seat 101049 has two first limit blocks 101047 with a 90-degree angle. Figure 4 shown.

[0063] One end of the rotating tray baffle 101046 is connected to the rotating shaft and has a second limit block 101048 that moves between the two first limit blocks 101047.

[0064] The above realizes that the RFID read-write head is responsible for identifying the supplier code of the returned empty pallet, the horizontal cylinder 101045 is used to control the locking and releasing of the rotating pallet baffle 101046, and the vertical lifting cylinder 10101 is used to lift the conveyor line docking roller 10102 to drive the seat pallets thereon into the stacking space for stacking; the rotating pallet baffle 101046 is designed to have two states: a horizontal static state and an active open state. After the pallet enters the initial position of the mechanism, it is lifted up by the vertical lifting cylinder 10101, and the rotating pallet baffle 101046 in the static position is lifted up. The pallet is lifted and opened to the active position. After the pallet moves upward, the rotating pallet baffle 101046 falls back to the stationary position. At this time, the pallet will be blocked by the stationary rotating pallet baffle 101046 when it falls again. At the same time, the horizontal cylinder 101045 is controlled to move horizontally, increasing the contact area between the rotating pallet baffle 101046 and the pallet. Furthermore, the lifted pallet is now located in the stacking position above the initial position, and the next pallet is identified and judged at the initial position below. If it is the same type of pallet, the lifting operation continues. If it is not the same type of pallet, an error prevention alarm is triggered. This process is repeated, and the pallets are automatically stacked. The stacking quantity is controlled by the height judgment sensor switch. The height judgment sensor switch can be a forming switch, a laser rangefinder, or other distance-measuring sensor. It is used to measure the distance between the top pallet and the height judgment sensor switch and determine whether it exceeds the limit value. When the limit value is reached, it proves that the stacking quantity has been reached.

[0065] In some preferred embodiments, the transfer conveyor line is located in the same horizontal plane as the tray locking assembly 10104 and includes a first tray group conveyor roller and a second tray group conveyor roller; Figure 3 , which can indicate the position and status of the transfer conveyor line. The transfer conveyor line is shown as mark D.

[0066] The height of the first pallet group conveyor roller is the same as the maximum height of the conveyor line docking roller 10102 after being lifted, and is used to receive the seat pallet group; the transport direction of the second pallet group conveyor roller is perpendicular to the transport direction of the first pallet group conveyor roller, and is used to transfer the seat pallet group from the first pallet group conveyor roller to the distribution elevator 100.

[0067] Among them, the length of the conveyor line docking roller 10102 is equal to the length of the stacker main frame 10100; it shows that the conveyor line docking roller 10102 is part of the return line, but can be lifted up, so that the same pallet as in the stacking accommodating space can be lifted up and continue to move on the return line. The return line is a circular transport line, and the seat pallets on it can move in a cycle.

[0068] In some embodiments, each sub-storage area 200 is provided with a height detection switch on one side close to the distribution elevator 100;

[0069] Before transferring the seat pallet group, the transport roller of the allocation elevator 100 first selects the height detection switch at the target position according to the type information. After the height detection switch is determined, the height detection switches at other positions are shielded; then the height detection switch at the target position is used to detect the transport roller moving from top to bottom; when the transport roller is detected, the transport roller stops moving downward so that it is parallel to the corresponding sub-storage area 200.

[0070] Furthermore, the sub-storage area 200 includes multiple transport rollers located on the same horizontal plane; the pallet storage area 2 also includes multiple frame structures distributed along the transport direction of the sub-storage area 200, and the frame structures include multiple layers, each layer having a transport roller. This ensures that the first seat pallet group stored will not be affected by other transport rollers. In other words, the multiple transport rollers in the sub-storage area 200 can be separated from each other, and the first seat pallet group stored will not be affected by the later seat pallet groups because the transport rollers corresponding to the first seat pallet group stored will not rotate. This achieves the purpose of sequential storage, with multiple seat pallet groups set apart; when it is necessary to enter the pallet retrieval area 3, multiple transport rollers can be started and operated simultaneously.

[0071] In some preferred embodiments, a pallet retrieval area 3 is further included, and the pallet retrieval area 3 is used to select one of the seat pallet groups in the pallet storage area 2 for use.

[0072] The pallet picking area 3 includes a picking elevator 300 and a logistics vehicle docking roller 301, as well as a material vehicle request picking switch; the structure of the picking elevator 300 is the same as that of the distribution elevator 100; the picking elevator 300 is used to move the transport roller to the corresponding sub-storage area 200 position according to the type of seat pallet group to be picked up; and then move down to the logistics vehicle docking roller 301.

[0073] The logistics vehicle requests to retrieve the material switch, which is used to trigger the confirmation of the material retrieval demand and the supplier code. The material retrieval elevator is used to transport storage pallets of different heights to the roller mouth of the logistics vehicle docking roller 301.

[0074] The structures of the above-mentioned reclaiming elevator 300 and distribution elevator 100 are prior art and can be referred to as roller elevators.

[0075] Transport roller tables are also conventional structures. Based on their drive system, they can be categorized as follows: Collectively driven roller tables consist of a group of 4 to 10 rollers driven by a single electric motor. They are primarily used to transport short, heavy rolled products or in applications where the rollers operate under harsh conditions. Because the weight of the rolled products is concentrated on several rollers, each roller bears a significant load. Using a collective drive reduces the motor power required. To facilitate the installation of bevel gears mounted on a long shaft, the bevel gears are dynamically fitted to the shaft and secured with a helical key. This design makes assembly and disassembly difficult and reduces the meshing performance of the bevel gears. Currently, some roller tables utilize a keyless connection. A keyless connection is a static fit with a certain interference fit, transmitting torque through friction between mating surfaces. This keyless connection preserves the strength of the shaft, improves its ability to withstand shock loads, and offers a simpler structure and easier manufacturing.

[0076] A specific embodiment is given below, with reference to the attached Figure 1 and attached Figure 6 .

[0077] ① Set the number of suppliers to 3, numbered A / B / C respectively. The incoming seat trays are required to have RFID chips attached to the bottom of A / B / C for identification; there are also three height detection switches, marked a, b, and c respectively.

[0078] ② Set the number of pallets stacked for the same type of seat pallet group to 4;

[0079] ③ When the seat delivery is completed and the empty seat pallet needs to be returned, the pallet queue enters the automatic stacker in sequence for identification and stacking. First, the pallet type is determined, and the pallet A with the same number is automatically stacked up to 4. The stacking limit position is determined by the pallet stacking height detection switch a. At this time, the supplier number information signal A is transmitted to the PLC to control the distribution elevator 100 to distribute the roller operation, that is, the elevator is controlled to start and stop through the corresponding height detection switch A in the distribution elevator 100. In this process, switches B and C will be shielded to control the pallet distributed this time to enter roller A (the transport roller in one of the sub-storage areas) for storage; similarly, the logic of storing pallets B and C is the same as that of pallet A.

[0080] ④ When the three-layer material rack storage is completed, if the supplier needs to pull the empty pallet back with a logistics vehicle, the logistics personnel go to the material retrieving port and submit the material retrieving request through the button box distributor, such as supplier A. At this time, after the PLC receives the signal, the system controls the operation of roller conveyor A to start, and the empty pallet A enters the material retrieving elevator and is taken to the first-layer unloading logistics docking point for docking with the empty logistics vehicle.

[0081] Therefore, the main function is to realize the functions of identification, stacking and automatic allocation of conveyor rollers during the return of empty seat pallets from suppliers on the seat conveyor line of the final assembly process, so as to reduce logistics and transportation costs and realize the purpose of sorting and receiving empty pallets from multiple suppliers. It is beneficial for OEMs with high-beat and mixed-model production to control the logistics costs of seats; when empty pallets of the seat line are returned, the supplier can be automatically identified, multi-layer automatic stacking can be carried out, and they can be automatically allocated to the corresponding supplier roller layer to realize the intelligent sorting and return function; the entire system structure is cleverly designed, breaking the technical bottleneck of single-layer return racks and single pallet return of seat pallets in the industry. Through the cooperation of relevant devices, it is finally possible to smoothly realize the automatic stacking of multiple seat pallets, the automatic allocation and automatic docking and return of pallets from multiple suppliers, which greatly reduces logistics and transportation costs and improves production line efficiency.

[0082] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0083] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0084] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An RFID-based seat tray stacking and emptying system, characterized in that: It includes: A tray storage area (2) comprising a plurality of sub-storage areas (200) spaced apart from each other, each sub-storage area (200) storing a type of seat tray; A pallet distribution area (1) is used to identify the supplier code of each seat pallet to obtain identification information; then, multiple seat pallets are classified and stacked according to the identification information, and after each group of seat pallet groups is formed, the group of seat pallet groups is transferred to the corresponding sub-storage area (200); the pallet distribution area (1) includes a distribution elevator (100), a pallet stacker (101) and a transfer conveyor line; the pallet stacker (101) is provided with an RFID read / write head for identifying the supplier code of each seat pallet, and multiple seat pallets are classified and stacked according to the identification information; the transfer conveyor The delivery line is used to receive the seat pallet group in the pallet stacker (101) after each seat pallet group is formed, and send the type information of the seat pallet group to the distribution elevator (100); the distribution elevator (100) is used to receive the seat pallet group and type information sent by the transfer conveyor line, and adjust the height of its transport roller according to the type information of the seat pallet group to transfer the seat pallet group to the corresponding sub-storage area (200); the pallet stacker (101) includes: a stacker main frame (10100), the inner space of which is divided into a stacking accommodating space and an identification and transportation space arranged upper and lower and connected; A vertical lifting cylinder (10101) is provided in the identification and transportation space, and a conveyor line docking roller (10102) is connected to the top of the vertical lifting cylinder (10101); an RFID reader is provided on the conveyor line docking roller (10102); the length of the conveyor line docking roller (10102) is equal to the length of the stacker main frame (10100); a height judgment induction switch (10103) is provided on the inner top of the stacking accommodating space; a pallet locking assembly (10104) is installed in the stacking accommodating space to restrict the seat pallet in the stacking accommodating space from moving downward into the identification and transportation space; the transfer conveyor line and the pallet locking assembly (10104) are located in the same horizontal plane and include a first pallet group conveying roller and a second pallet group conveying roller; The height of the first pallet group conveying roller is the same as the maximum height of the conveyor line docking roller (10102) after being lifted, and is used to receive the seat pallet group; the transport direction of the second pallet group conveying roller is perpendicular to the transport direction of the first pallet group conveying roller, and is used to transfer the seat pallet group from the first pallet group conveying roller to the distribution elevator (100); The seat trays of the seat tray groups are of the same type, and the seat tray groups of different groups may be of the same or different types.

2. The RFID-based seat tray stacking and emptying system according to claim 1, characterized in that: The tray locking assembly (10104) comprises: Two mounting seats (101041) are spaced apart, and a line connecting the two is perpendicular to the movement direction of the vertical lifting cylinder in a vertical plane; a coaxial slide rail (101042) and a fixed block (101043) are provided on the mounting seats (101041); and a horizontal cylinder (101045) is provided on the fixed block (101043); A slider member (101044) is slidably disposed on the slide rail (101042), and an output shaft of the horizontal cylinder (101045) is fixedly connected to the slider member (101044); the slider member (101044) is closer to the central axis of the vertical lifting cylinder than the horizontal cylinder (101045); The rotating tray baffle member (101046) is hinged on the slider member (101044) and rotates within a designed range.

3. The RFID-based seat tray stacking and emptying system according to claim 2, characterized in that: The top of the slider (101044) is provided with a bearing seat (101049); a rotating shaft is provided inside the bearing seat (101049); and two first limit blocks (101047) with an included angle of ninety degrees are provided on the outside of the bearing seat (101049); One end of the rotating tray baffle (101046) is connected to the rotating shaft and has a second limit block (101048) that moves between the two first limit blocks (101047).

4. The RFID-based seat tray stacking and emptying system according to claim 1, wherein: Each sub-storage area (200) is provided with a height detection switch on one side close to the distribution elevator (100); Before transferring the seat tray group, the transport roller of the distribution elevator (100) first selects the height detection switch at the target position according to the type information, and after the height detection switch is determined, the height detection switches at other positions are shielded; then, the height detection switch at the target position is used to detect the transport roller moving from top to bottom; when the transport roller is detected, the transport roller stops moving downward so that it is parallel to the corresponding sub-storage area (200).

5. The RFID-based seat tray stacking and emptying system according to claim 1, wherein: The sub-storage area (200) includes a plurality of transport rollers located on the same horizontal plane; The pallet storage area (2) further comprises a plurality of frame structures distributed along the transport direction of the sub-storage area (200), the frame structure comprising a plurality of layers, and each layer is provided with a transport roller.

6. The RFID-based seat tray stacking and emptying system according to claim 1, wherein: It also includes a pallet retrieval area (3), which is used to select and retrieve one of the seat pallet groups in the pallet storage area (2).

7. The RFID-based seat tray stacking and emptying system according to claim 6, characterized in that: The pallet retrieving area (3) includes a retrieving elevator (300) and a logistics vehicle docking roller (301); the structure of the retrieving elevator (300) is the same as that of the distribution elevator (100); the retrieving elevator (300) is used to move the transport roller to the corresponding sub-storage area (200) position according to the type of seat pallet group to be retrieved; and then move it downward to the logistics vehicle docking roller (301).

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