A zero-inventory automatic relay picking system

Abstract

The application relates to the technical field of goods picking, and discloses a zero-goods automatic relay picking system, which comprises an AGV (Automatic Guided Vehicle), a zero-goods shelf, an empty container supply conveying line, a container warehouse-out conveying line, a relay picking conveying line, a goods picking temporary storage shelf, a relay container, a basic container, an electronic tag, a jacking mechanism device, a scanning gun, a stock management system, a warehouse equipment control system and the container warehouse-out conveying line. The zero-goods automatic relay picking system optimizes the use of the lower space of the goods picking temporary storage shelf into the relay picking conveying line, and the jacking mechanism device is combined for use, so that the relay container can be automatically lifted from the bottom of the goods picking temporary storage shelf to the middle part of the goods picking temporary storage shelf, the personnel picking operation is facilitated, physical strength is saved, and after the single-container picking is completed, the operation personnel can use the container warehouse-out conveying line to warehouse out the container, that is, complete the picking task, so that the zero-goods picking efficiency is improved, and the warehouse-out timeliness of order relay picking is improved.

Description

Technical Field

[0001] This invention relates to the field of goods picking technology, specifically to an automated relay picking system for small-volume goods. Background Technology

[0002] With the surge in retail business volume in the pharmaceutical industry, the diversification of retail channels, and the increasing variety of retail end customers, pharmaceutical logistics centers are facing a growing demand for outbound pharmaceutical goods and a surge in the workload of picking outbound goods. Therefore, it is necessary to study more reasonable optimization solutions to improve the efficiency of picking outbound goods and the timeliness of outbound orders in pharmaceutical logistics centers.

[0003] The existing solution for implementing the small-item picking mode involves using AGVs (Automated Guided Vehicles) in conjunction with mobile small-item shelves, picking workstations, temporary storage shelves at picking workstations, replenishment conveyors, empty box supply conveyors, bin outbound conveyors, electronic tags, bins, and order boxes. Replenishment personnel directly place full cases or unpacked cases of medicines at the replenishment station onto the mobile small-item shelf storage locations transported by the AGVs. After replenishment, the AGVs transport the mobile small-item shelves to the corresponding storage locations in the small-item area. During small-item picking operations, the AGVs automatically transport... The AGV (Automated Guided Vehicle) transports the mobile shelves with assigned tasks to the picking station. The temporary storage shelves at the picking station are divided into upper, middle, and lower levels. Workers take empty order boxes from the empty box supply conveyor line and place them on the temporary storage shelves at the picking station. Picking operators select goods into the empty order boxes according to the picking quantity displayed on the electronic tags on the temporary storage locations at the picking station. After the task picking of the order boxes is completed, the operators push the order boxes to the material box outbound conveyor line and transport them to the verification area for verification and packaging. After the task picking is completed, the AGV transport vehicle returns the mobile shelves to the corresponding location.

[0004] However, while the above-mentioned zero-goods picking operation mode can alleviate picking pressure to some extent, the actual picking workstations have multiple heights, which may cause users to squat or sit while working, making it very inconvenient to use. Secondly, the continuity is poor, and the relay picking function cannot be realized. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] This invention provides an automated relay picking system for small-volume goods, which solves the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] This invention provides the following technical solution: an automated relay picking system for small and medium-sized goods, including an AGV (Automated Guided Vehicle), small and medium-sized goods shelves, an empty bin supply conveyor line, a bin outbound conveyor line, a relay picking conveyor line, a picking temporary storage shelf, a relay bin, a basic bin, electronic tags, a lifting mechanism, a barcode scanner, an inventory management system, and a warehouse equipment control system;

[0009] The bin outbound conveyor line consists of two sets installed at the top and middle of the picking temporary storage rack, respectively. The bin outbound conveyor line can be used to transport the output after picking is completed, and the bin outbound conveyor line is composed of a first aluminum profile body, a first motor, a first roller, and a first multi-groove belt.

[0010] A relay picking conveyor line is installed at the bottom of the picking temporary storage rack and aligned with the bin outbound conveyor line. The relay picking conveyor line can be used to transport relay bins to the corresponding positions on the picking temporary storage rack. The relay picking conveyor line consists of a second aluminum profile body, a second motor, a second roller, and a second multi-groove belt.

[0011] The lifting mechanism includes an electric push rod, a lifting platform, and an auxiliary displacement output component. The output end of the electric push rod is connected to the bottom of the lifting platform, and when the electric push rod is closed, it can drive the lifting platform to align with the side of the relay picking conveyor line. Several guide rollers are movably sleeved inside the top of the lifting platform, and a stop plate is fixedly connected to one side of the lifting platform. When the electric push rod is fully open, it can drive the lifting platform to align with the side of the material box outbound conveyor line in the middle of the picking temporary storage shelf. The auxiliary displacement output component is installed on the side structure of the relay picking conveyor line, and the output structure of the auxiliary displacement output component can apply a rotational thrust to the corresponding relay box, so that the relay box automatically moves to the top surface of the lifting platform.

[0012] Preferably, the AGV automated guided vehicle consists of a ground QR code path, the AGV vehicle body, and two code reader devices. The top of the AGV vehicle body is equipped with a lifting mechanism, enabling the AGV automated guided vehicle to transport the retail shelves.

[0013] Preferably, the retail shelf consists of a first shelf, first uprights fixedly connected to the four corners of the first shelf, and first beams fixedly connected between adjacent first uprights. The number of first shelves is not less than two. The retail shelf is used to place whole boxes or loose medicines. The surface of the bottom first shelf of the retail shelf is affixed with a QR code, and the surface of the first beam is affixed with a shelf location label barcode.

[0014] Preferably, the empty bin supply conveyor line consists of a third aluminum profile body, a third motor, a third roller, and a third multi-groove belt, and the empty bin supply conveyor line is located outside the picking temporary storage rack and is used to transport the basic bins above the picking temporary storage rack.

[0015] Preferably, the picking temporary storage rack consists of a second shelf, second uprights fixedly connected to the four corners of the second shelf, and second crossbeams fixedly connected between adjacent second uprights, and the number of second shelves is three, used to store the relay box.

[0016] Preferably, both the relay box and the base box are made of plastic, and the surface of the relay box is affixed with a first barcode label. The relay box is used to load the picked order of retail medicines, and the surface of the base box is affixed with a second barcode label. The base box is also used to load the order of retail medicines to be picked.

[0017] Preferably, the number of electronic tags is not less than two and distributed on the surface of the second beam inside the picking temporary storage shelf, and the electronic tags can be used to display the quantity of the order medicines to be picked.

[0018] Preferably, the scanner can be used to scan the location label barcode on the first crossbeam of the zero-cargo shelf to activate the corresponding electronic tag. The warehouse equipment control system can be used to receive tasks issued by the inventory management system, and then convert the order task instructions into equipment control instructions and send them to the AGV automatic handling vehicle, empty box supply conveyor line, box outbound conveyor line, relay picking conveyor line, electric push rod and auxiliary displacement output component.

[0019] Preferably, the auxiliary displacement output component consists of a brake stepper motor and a pressure rod connected to the output end of the brake stepper motor. A support is installed between the housing surface of the brake stepper motor and the second aluminum profile body inside the relay picking conveyor line. The pressure rod is movably sleeved with the second aluminum profile body inside the relay picking conveyor line and performs rotational pressing operation as the output structure of the auxiliary displacement output component. A scissor lift platform is provided on the outside of the picking temporary storage rack, and a protective baffle is installed on the side surface of the scissor lift platform near the picking temporary storage rack.

[0020] An operating method for an automated relay picking system for small-volume goods includes the following steps:

[0021] S1. When a small-item relay picking task occurs, place the relay box on top of the second multi-groove belt in the relay picking conveyor line, activate the second motor in the relay picking conveyor line, and cooperate with the corresponding second roller to make the second multi-groove belt drive the relay box to move automatically. The relay picking conveyor line will transport the relay box to the position where the picking temporary storage shelf is aligned with the lifting platform. Then, shut down the relay picking conveyor line, and then start the brake stepper motor. The output end of the brake stepper motor drives the pressure rod to rotate and press the relay box, so that the relay box will move automatically from the relay picking conveyor line to the top surface of the lifting platform. The stop plate can limit and stop the relay box.

[0022] S2. After the relay box is moved to the top of the lifting platform, the electric push rod is activated. The output end of the electric push rod drives the lifting platform and the relay box on the top of the lifting platform to be aligned with the side of the relay picking conveyor line in the middle of the picking temporary storage rack, thereby facilitating the picking of goods by the operators.

[0023] S3. The inventory management system sends the corresponding order relay picking task to the relay box to be picked, and issues picking instructions to the AGV automatic transport vehicle. After receiving the picking instructions, the AGV automatic transport vehicle runs to the bottom of the small goods shelf where the goods are located, and then uses its own lifting mechanism to lift the small goods shelf, and then moves the small goods shelf to the corresponding workstation of the corresponding picking temporary storage shelf along the route calculated by the system in advance.

[0024] S4. The operator checks the computer and retrieves the relay task order from the inventory management system. The task order contains the shelf location number of the small items to be picked and the quantity of the items to be picked. The operator then picks the corresponding small items from the shelf location according to the shelf location number and quantity of the items in the task order.

[0025] S5. During the picking process, the electronic tag corresponding to the relay box on the picking temporary storage shelf lights up. The electronic tag displays the quantity of goods to be placed. The operator checks and places the goods according to the quantity of goods displayed on the electronic tag. After placement, the operator taps the electronic tag of the storage location to confirm.

[0026] S6. After the goods in the relay box are picked, the background computer displays that the relay box operation is complete. Then, the operator pushes the relay box to the top of the first multi-groove belt in the corresponding material box outbound conveyor line, activates the first motor in the material box outbound conveyor line, and works with the corresponding first roller to make the first multi-groove belt drive the relay box to automatically move out of the warehouse, and the small goods picking operation is completed.

[0027] Beneficial effects

[0028] The present invention has the following beneficial effects:

[0029] This automated relay picking system optimizes the use of the lower space of the picking storage rack into a relay picking conveyor line. When combined with a lifting mechanism, it can automatically lift the relay box from the bottom of the picking storage rack to the middle of the rack, facilitating personnel picking operations and saving physical labor. After a single box is picked, the operator uses the outbound conveyor line to remove it from the warehouse, thus completing the picking task. This improves both the efficiency of small item picking and the timeliness of order relay picking outbound. Attached Figure Description

[0030] Figure 1 This is a left-side schematic diagram of the picking temporary storage shelf of the present invention;

[0031] Figure 2 This is a top view of the retail shelving unit of the present invention;

[0032] Figure 3 This is a front view schematic diagram of the picking temporary storage shelf of the present invention;

[0033] Figure 4 This is an enlarged schematic diagram of the retail shelf of the present invention;

[0034] Figure 5 This is an enlarged schematic diagram of the auxiliary displacement output component of the present invention.

[0035] In the diagram: 1. AGV (Automated Guided Vehicle); 2. Small-item rack; 3. Empty bin supply conveyor; 4. Bin outbound conveyor; 5. Relay picking conveyor; 6. Picking temporary storage rack; 7. Relay box; 8. Basic bin; 9. Electronic tag; 10. Electric push rod; 11. Lifting platform; 12. Auxiliary displacement output component; 121. Brake stepper motor; 122. Pressure rod; 13. Scissor lift platform; 14. Protective baffle. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1-5 An automated relay picking system for small and medium-sized goods includes an AGV (Automated Guided Vehicle) trolley 1, a small and medium-sized goods shelf 2, an empty material box supply conveyor line 3, a material box outbound conveyor line 4, a relay picking conveyor line 5, a picking temporary storage shelf 6, a relay box 7, a basic material box 8, an electronic tag 9, a lifting mechanism device, a barcode scanner, an inventory management system, and a warehouse equipment control system.

[0038] The AGV automatic transport vehicle 1 consists of a ground QR code path, the AGV vehicle body, and two barcode readers. The top of the AGV vehicle body is equipped with a lifting mechanism, enabling the AGV automatic transport vehicle 1 to transport the small goods shelf 2. The small goods shelf 2 consists of a first shelf, first uprights fixedly connected to the four corners of the first shelf, and first beams fixedly connected between adjacent first uprights. The number of first shelves is not less than two. The small goods shelf 2 is used to place whole boxes or loose goods and medicines. The surface of the bottom first shelf of the small goods shelf 2 is affixed with a QR code, and the surface of the first beam is affixed with a location label barcode.

[0039] The empty bin supply conveyor line 3 consists of a third aluminum profile body, a third motor, a third roller, and a third multi-groove belt. The empty bin supply conveyor line 3 is located outside the picking temporary storage rack 6 and is used to transport the basic bins 8 above the picking temporary storage rack 6. The picking temporary storage rack 6 consists of a second shelf, second columns fixedly connected to the four corners of the second shelf, and second beams fixedly connected between adjacent second columns. The second shelf has three shelves for storing relay bins 7. Both the relay bins 7 and the basic bins 8 are made of plastic. The surface of the relay bins 7 is affixed with a first barcode label. The relay bins 7 are used to load the ordered retail medicines. The surface of the basic bins 8 is affixed with a second barcode label. The basic bins 8 are used to load the ordered retail medicines to be picked. The number of electronic tags 9 is not less than two and they are distributed on the surface of the second beam inside the picking temporary storage rack 6. The electronic tags 9 can be used to display the quantity of the ordered medicines to be picked.

[0040] The barcode scanner can be used to scan the location label barcode on the first crossbeam of the zero-goods shelf 2 to activate the corresponding electronic tag 9. The warehouse equipment control system can be used to receive the tasks issued by the inventory management system, and then convert the order task instructions into equipment control instructions and send them to the AGV automatic handling vehicle 1, the empty box supply conveyor line 3, the box outbound conveyor line 4, the relay picking conveyor line 5, the electric push rod 10, and the auxiliary displacement output component 12. The auxiliary displacement output component 12 consists of a brake stepper motor 121 and a pressure rod 122 connected to the output end of the brake stepper motor 121. A support is installed between the housing surface of the brake stepper motor 121 and the second aluminum profile body inside the relay picking conveyor line 5. The pressure rod 122 is movably sleeved with the second aluminum profile body inside the relay picking conveyor line 5 and serves as the output structure of the auxiliary displacement output component 12 to perform rotational pressing operations. A scissor lift platform 13 is set on the outside of the picking temporary storage shelf 6. A protective baffle 14 is installed on the side surface of the scissor lift platform 13 near the picking temporary storage shelf 6.

[0041] The bin outbound conveyor line 4 is set in two sets and installed in the top and middle of the picking temporary storage rack 6 respectively. The bin outbound conveyor line 4 can be used to transport the output after picking is completed. The bin outbound conveyor line 4 is composed of a first aluminum profile body, a first motor, a first roller, and a first multi-groove belt.

[0042] The relay picking conveyor line 5 is installed at the bottom of the picking temporary storage rack 6 and aligned with the bin outbound conveyor line 4. The relay picking conveyor line 5 can be used to transport the relay box 7 to the corresponding position of the picking temporary storage rack 6. The relay picking conveyor line 5 is composed of a second aluminum profile body, a second motor, a second roller, and a second multi-groove belt.

[0043] The lifting mechanism includes an electric push rod 10, a lifting platform 11, and an auxiliary displacement output component 12. The output end of the electric push rod 10 is connected to the bottom of the lifting platform 11, and when the electric push rod 10 is closed, it can drive the lifting platform 11 to align with the side of the relay picking conveyor line 5. Several guide rollers are movably sleeved inside the top of the lifting platform 11, and a stop plate is fixedly connected to one side of the lifting platform 11. When the electric push rod 10 is fully open, it can drive the lifting platform 11 to align with the side of the material box outbound conveyor line 4 in the middle of the picking temporary storage shelf 6. The auxiliary displacement output component 12 is installed on the side structure of the relay picking conveyor line 5, and the output structure of the auxiliary displacement output component 12 can apply a rotational thrust to the corresponding relay box 7, so that the relay box 7 automatically moves to the top surface of the lifting platform 11.

[0044] Example 1

[0045] An operating method for an automated relay picking system for small-volume goods includes the following steps:

[0046] S1. When a small-item relay picking task occurs, the relay box 7 is placed on top of the second multi-groove belt in the relay picking conveyor line 5. The second motor in the relay picking conveyor line 5 is activated, and the corresponding second roller causes the second multi-groove belt to automatically move the relay box 7. The relay picking conveyor line 5 transports the relay box 7 to the position where the picking temporary storage shelf 6 is aligned with the lifting platform 11. The relay picking conveyor line 5 is then turned off. Next, the brake stepper motor 121 is started. The output end of the brake stepper motor 121 drives the pressure rod 122 to rotate and press the relay box 7, thereby causing the relay box 7 to automatically move from the relay picking conveyor line 5 to the top surface of the lifting platform 11. The stop plate can limit and stop the relay box 7.

[0047] S2. After the relay box 7 is moved to the top of the lifting platform 11, the electric push rod 10 is turned on. The output end of the electric push rod 10 drives the lifting platform 11 and the relay box 7 on the top of the lifting platform 11 to be aligned with the side of the relay picking conveyor line 5 in the middle of the picking temporary storage shelf 6, thereby facilitating the picking of goods by the operators.

[0048] S3. The inventory management system sends the corresponding order relay picking task to the relay box 7 to be picked, and issues a picking instruction to the AGV automatic transport vehicle 1. After receiving the picking instruction, the AGV automatic transport vehicle 1 runs to the bottom of the small goods shelf 2 where the goods are located, and then uses its own lifting mechanism to lift the small goods shelf 2, and then transports the small goods shelf 2 to the corresponding workstation of the corresponding picking temporary storage shelf 6 along the route calculated by the system in advance.

[0049] S4. The operator checks the computer and retrieves the relay task order from the inventory management system. The task order contains the shelf location number of the small items to be picked and the quantity of the items to be picked. The operator then picks the corresponding small items from shelf location 2 of the small items shelf according to the shelf location number and quantity of the items in the retrieved task order.

[0050] S5. During the picking process, the electronic tag 9 corresponding to the relay box 7 on the picking temporary storage shelf 6 lights up. The electronic tag 9 displays the quantity of goods to be placed. The operator checks and places the goods according to the quantity of goods displayed on the electronic tag 9. After placement, the operator taps off the electronic tag 9 of the storage location to confirm.

[0051] S6. After the goods in the relay box 7 have been picked, the background computer displays that the relay box 7 has completed its operation. Then, the operator pushes the relay box 7 into the top of the first multi-groove belt in the corresponding material box outbound conveyor line 4, activates the first motor in the material box outbound conveyor line 4, and works with the corresponding first roller to make the first multi-groove belt drive the relay box 7 to automatically move out of the warehouse, thus completing the small goods picking operation.

[0052] Example 2

[0053] S1. For the small goods relay picking task, the operation is carried out according to the steps of the above embodiment 1. When the basic material box 8 on the small goods shelf 2 is picked and emptied, the basic material box 8 is placed on the top of the third multi-groove belt in the empty material box supply conveyor line 3. The third motor in the empty material box supply conveyor line 3 is activated, and the corresponding third roller is used to make the third multi-groove belt drive the empty basic material box 8 to move automatically.

[0054] S2. After reaching the designated location, the warehousing operator clicks on the location association of the basic material box 8 in the computer inventory management system, then picks up the empty basic material box 8 on the empty material box supply conveyor line 3, scans the second barcode label on the basic material box 8 to associate the location, which is convenient for subsequent staff to replenish. At this point, the supply operation of the empty basic material box 8 is completed.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated relay picking system for small-volume goods, comprising an AGV (automated guided vehicle) (1), a small-volume goods shelf (2), an empty bin supply conveyor line (3), a bin outbound conveyor line (4), a relay picking conveyor line (5), a picking temporary storage shelf (6), a relay bin (7), a basic bin (8), an electronic tag (9), a lifting mechanism, a barcode scanner, an inventory management system, and a warehouse equipment control system; characterized in that: The bin outbound conveyor line (4) is set in two sets and installed in the top and middle of the picking temporary storage rack (6) respectively. The bin outbound conveyor line (4) can be used to transmit the output after picking is completed. The bin outbound conveyor line (4) is composed of a first aluminum profile body, a first motor, a first roller, and a first multi-groove belt. A relay picking conveyor (5) is installed at the bottom of the picking temporary storage rack (6) and aligned with the bin outbound conveyor (4). The relay picking conveyor (5) can be used to transport the relay box (7) to the corresponding position of the picking temporary storage rack (6). The relay picking conveyor (5) is composed of a second aluminum profile body, a second motor, a second roller, and a second multi-groove belt. The lifting mechanism includes an electric push rod (10), a lifting platform (11), and an auxiliary displacement output component (12). The output end of the electric push rod (10) is connected to the bottom of the lifting platform (11) and can drive the lifting platform (11) to align with the side of the relay picking conveyor line (5) when the electric push rod (10) is closed. Several guide rollers are movably sleeved in the top of the lifting platform (11), and a stop plate is fixedly connected to one side of the lifting platform (11). When the electric push rod (10) is fully engaged, it can drive the lifting platform (11) to align with the side of the material box outbound conveyor line (4) in the middle of the picking temporary storage shelf (6). The auxiliary displacement output component (12) is installed on the side structure of the relay picking conveyor line (5), and the output structure of the auxiliary displacement output component (12) can apply a rotational thrust to the corresponding relay box (7) so that the relay box (7) automatically moves to the top surface of the lifting platform (11).

2. The automatic relay picking system for small-volume goods according to claim 1, characterized in that: The AGV automatic transport vehicle (1) consists of a ground QR code path, the AGV vehicle body, and two code reader devices. The top of the AGV vehicle body is equipped with a lifting mechanism, which enables the AGV automatic transport vehicle (1) to transport the small goods shelf (2).

3. The automatic relay picking system for small-volume goods according to claim 1, characterized in that: The retail shelf (2) consists of a first shelf, first uprights fixedly connected to the four corners of the first shelf, and first beams fixedly connected between adjacent first uprights. The number of first shelves is not less than two. The retail shelf (2) is used to place whole boxes or loose goods and medicines. The surface of the bottom first shelf of the retail shelf (2) is affixed with a QR code, and the surface of the first beam is affixed with a location label barcode.

4. The automatic relay picking system for small-volume goods according to claim 1, characterized in that: The empty bin supply conveyor line (3) consists of a third aluminum profile body, a third motor, a third roller and a third multi-groove belt, and the empty bin supply conveyor line (3) is located outside the picking temporary storage rack (6) and is used to transport the basic bins (8) above the picking temporary storage rack (6).

5. The automatic relay picking system for small-volume goods according to claim 1, characterized in that: The picking temporary storage rack (6) consists of a second shelf, second columns fixedly connected to the four corners of the second shelf, and second beams fixedly connected between adjacent second columns. The second shelf is set in three units to store the relay box (7).

6. The automatic relay picking system for small-volume goods according to claim 1, characterized in that: Both the relay box (7) and the base box (8) are made of plastic. The relay box (7) has a first barcode label on its surface. The relay box (7) is used to load the ordered retail medicines to be picked. The base box (8) has a second barcode label on its surface. The base box (8) is used to load the ordered retail medicines to be picked.

7. The automatic relay picking system for small-volume goods according to claim 1, characterized in that: The number of electronic tags (9) is not less than two and distributed on the surface of the second beam inside the picking temporary storage shelf (6), and the electronic tags (9) can be used to display the quantity of the order medicines to be picked.

8. The automatic relay picking system for small-volume goods according to claim 1, characterized in that: The scanner can be used to scan the location label barcode on the first crossbeam of the retail shelf (2) to activate the corresponding electronic tag (9). The warehouse equipment control system can be used to receive the task issued by the inventory management system, and then convert the order task instruction into equipment control instruction and send it to the AGV automatic handling vehicle (1), the empty box supply conveyor line (3), the box outbound conveyor line (4), the relay picking conveyor line (5), the electric push rod (10), and the auxiliary displacement output component (12).

9. The automatic relay picking system for small-volume goods according to claim 1, characterized in that: The auxiliary displacement output component (12) consists of a brake stepper motor (121) and a pressure rod (122) connected to the output end of the brake stepper motor (121). A support is installed between the housing surface of the brake stepper motor (121) and the second aluminum profile body inside the relay picking conveyor line (5). The pressure rod (122) is movably connected to the second aluminum profile body inside the relay picking conveyor line (5) and serves as the output structure of the auxiliary displacement output component (12) for rotational pressing. A scissor lift platform (13) is provided on the outside of the picking temporary storage rack (6). A protective baffle (14) is installed on the side surface of the scissor lift platform (13) near the picking temporary storage rack (6).

10. A method for operating a revolving pickup system for small-volume orders as described in any one of claims 1-9, characterized in that, The following steps are included: S1. When a small-item relay picking task occurs, place the relay box (7) on top of the second multi-groove belt in the relay picking conveyor line (5), activate the second motor in the relay picking conveyor line (5), and cooperate with the corresponding second roller to make the second multi-groove belt drive the relay box (7) to move automatically. The relay picking conveyor line (5) will transport the relay box (7) to the position where the picking temporary storage shelf (6) is aligned with the lifting platform (11). Close the relay picking conveyor line (5), and then start the brake stepper motor (121). The output end of the brake stepper motor (121) will drive the pressure rod (122) to rotate and press the relay box (7), so that the relay box (7) will move automatically from the relay picking conveyor line (5) to the top surface of the lifting platform (11). The stop plate can limit and stop the relay box (7). S2. After the relay box (7) is moved to the top of the lifting platform (11), the electric push rod (10) is turned on. The output end of the electric push rod (10) drives the lifting platform (11) and the relay box (7) on the top of the lifting platform (11) to be aligned with the side of the relay picking conveyor line (5) in the middle of the picking temporary storage shelf (6), thereby facilitating the picking of goods by the operators. S3. The inventory management system sends the corresponding order relay picking task to the relay box (7) to be picked, and issues a picking instruction to the AGV automatic transport vehicle (1). After receiving the picking instruction, the AGV automatic transport vehicle (1) runs to the bottom of the small goods shelf (2) where the goods are located, and then uses its own lifting mechanism to lift the small goods shelf (2), and then moves the small goods shelf (2) to the corresponding workstation of the corresponding picking temporary storage shelf (6) along the route calculated by the system in advance. S4. The operator checks the computer and retrieves the relay task order in the inventory management system. The task order contains the shelf location number of the small goods to be picked and the quantity of goods to be picked. The operator then picks the corresponding small goods from the small goods shelf (2) according to the shelf location number and quantity of goods in the retrieved task order. S5. During the picking process, the electronic tag (9) corresponding to the relay box (7) on the picking temporary storage shelf (6) lights up. The electronic tag (9) displays the quantity of goods to be delivered. The operator checks and delivers the goods according to the quantity of goods displayed on the electronic tag (9). After delivery, the operator taps off the electronic tag (9) of the storage location to confirm. S6. After the goods in the relay box (7) are picked, the background computer displays that the relay box (7) has completed the operation. Then, the operator pushes the relay box (7) into the top of the first multi-groove belt in the corresponding material box outbound conveyor line (4), activates the first motor in the material box outbound conveyor line (4), and works with the corresponding first roller to make the first multi-groove belt drive the relay box (7) to automatically move out of the warehouse, and the small goods picking operation is completed.

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