CN213621643U

CN213621643U - Goods sorting system

Info

Publication number: CN213621643U
Application number: CN202022304831.1U
Authority: CN
Inventors: 何敏
Original assignee: Shenzhen SF Taisen Holding Group Co Ltd
Current assignee: Shenzhen SF Taisen Holding Group Co Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-07-06
Anticipated expiration: 2030-10-15

Abstract

The utility model provides a goods sorting system, which comprises a plurality of AGV, goods storage areas and a first goods sorting area, wherein the goods storage areas and the first goods sorting area are arranged at intervals along a first direction; the goods storage area comprises a plurality of three-dimensional goods shelves which are arranged at intervals along a second direction, a plurality of loaded trays are stored on the three-dimensional goods shelves, a cache bracket is arranged on one side of each three-dimensional goods shelf, which faces the first goods sorting area, and comprises a plurality of first cache positions which are arranged along the first direction, a track which extends along the first direction is arranged between every two adjacent three-dimensional goods shelves, and an automatic access device which moves along the track is arranged on the track and is used for acquiring the loaded trays from the three-dimensional goods shelves and conveying the loaded trays to the first cache positions on the cache bracket along the track; and the AGVs are used for acquiring the loaded trays from the first cache positions and moving the loaded trays to the first goods sorting area for sorting. The utility model discloses can satisfy the goods and select the business scene that system throughput required height.

Description

Goods sorting system

Technical Field

The utility model relates to a technical field is selected to the goods, concretely relates to system is selected to goods.

Background

With the continuous development of economy and the emergence of emerging business models such as the e-commerce industry, warehousing plays an important role in the whole commodity circulation cycle. At present, the automation degree of warehousing is required to be higher and higher, and the throughput of warehousing and the quantity of warehouse goods specifications are also higher and higher. Therefore, it is important to design different warehousing operation flows for different business modes, which directly concerns the operation cost of warehousing. In the warehousing process, the sorting is a more complicated process. In the design of the picking process, the problems of high personnel allocation ratio, low picking space utilization rate and the like exist. Particularly, for the picking business scenes with high throughput requirements and a large number of specifications, great challenges are faced in the aspects of personnel configuration, spatial layout and the like. Most of the existing goods picking systems convey goods through a conveyor, a conveying belt and the like, or the AGV is adopted to convey the goods, but the goods need to be queued up and taken when the AGV is too much, and a service scene with high throughput requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model provides a system is selected to goods aims at solving the problem that current system is selected to goods can't satisfy the business scene that throughput requires highly.

In order to solve the technical problem, the utility model provides a goods sorting system, which comprises a plurality of AGV, goods storage areas and a first goods sorting area, wherein the goods storage areas and the first goods sorting area are arranged at intervals along a first direction;

the goods storage area comprises a plurality of three-dimensional goods shelves which are arranged at intervals along a second direction, a plurality of loaded trays are stored on the three-dimensional goods shelves, a cache bracket is arranged on one side of each three-dimensional goods shelf, which faces the first goods sorting area, and comprises a plurality of first cache positions which are arranged along the first direction, a track which extends along the first direction is arranged between every two adjacent three-dimensional goods shelves, an automatic access device which moves along the track is arranged on the track, and the automatic access device is used for acquiring the loaded trays from the three-dimensional goods shelves and conveying the loaded trays to the first cache positions on the cache bracket along the track; the AGV comprises a first goods sorting area, a plurality of AGV are used for obtaining loaded trays from the first cache position and moving the loaded trays to the first goods sorting area for sorting.

Wherein, it has a plurality of first packing boxes that are equipped with the goods to pile up on the tray is carried to the area, first goods is selected the district including the robot that breaks a jam that is used for whole case to break a jam, the robot that breaks a jam is close to one side in goods storage area is equipped with a plurality of first sorting positions, the robot that breaks a jam keeps away from one side in goods storage area is equipped with first transmission device, a plurality of AGVs are used for carrying the tray with the area to move to on the first sorting position, the robot that breaks a jam is arranged in breaking a jam to the first packing box that carries in the tray is carried to the area to first packing box after will breaking a jam moves extremely first transmission device.

The stacking robot comprises a first picking position, a first packing box and a stacking robot, wherein a camera is arranged above the first picking position and used for photographing the first packing box on the first picking position to obtain a goods image, and the stacking robot unstacks the first packing box on the first picking position according to the goods image.

The first goods sorting area further comprises a plurality of second sorting positions, the second sorting positions and the first sorting positions are arranged along the second direction, the first conveying device conveys goods along the second direction, a second conveying device for conveying the goods along the second direction is arranged between the first conveying device and the second sorting positions, the tail end of the second conveying device is connected to the first conveying device, and the second conveying device and the second sorting positions are arranged at intervals.

Wherein, the goods system of selecting still includes automatic code wheel machine, automatic code wheel machine a plurality of seconds are selected the position and a plurality of first letter sorting position are followed the second direction is arranged, a plurality of AGVs still with a plurality of second letter sorting position with a plurality of first no-load tray of selecting on the position move extremely automatic code wheel machine, automatic code wheel machine is used for carrying out the code wheel to no-load tray.

Wherein, still be equipped with goods buffer memory between goods storage area and the first goods sorting district, goods buffer memory is equipped with a plurality of second buffer memory positions, a plurality of second buffer memory positions are used for the buffer memory the last tail dish of first sorting position with the area on the first buffer memory position carries the tray, wherein, the tail dish is the process the destacking robot still loads the area that carries the tray that carries of goods after destacking finishes.

The goods sorting system further comprises a second goods sorting area, the second goods sorting area and the goods cache area are arranged in the second direction at intervals, the second goods sorting area comprises a plurality of third sorting positions arranged in the first direction at intervals, and a third conveying device is arranged on one side, far away from the goods cache area, of each third sorting position.

The third conveying device comprises a first conveying line and a second conveying line which are arranged at intervals, the first conveying line and the second conveying line extend along the first direction, the first conveying line is located on one side, far away from the third sorting position, of the second conveying line, at least one third conveying line and at least one fourth conveying line are connected between the first conveying line and the second conveying line, the starting end of the first conveying line is used for receiving an empty second container, the third conveying line is used for moving the empty second container of the first conveying line to the second conveying line, and the fourth conveying line is used for moving the second container, filled with goods, of the second conveying line to the first conveying line.

Wherein, first transfer chain includes first steering device and follows first sub-transfer chain and the sub-transfer chain of second that first direction extends, first steering device connects the one end of first sub-transfer chain, the one end of the sub-transfer chain of second and the one end of third transfer chain, the second transfer chain includes the second and turns to the device and follows the sub-transfer chain of third and the sub-transfer chain of fourth that first direction extends, the second turns to the device and connects the one end of the sub-transfer chain of third, the one end of sub-transfer chain of fourth and the other end of third transfer chain.

The automatic access device is a single-stretching type stacker or a double-stretching type stacker.

The utility model provides a system is selected to goods, it sets up a plurality of first buffer positions to go orbital one side at automatic access arrangement, make automatic access arrangement can be along the track with the area that AGV did not reach transport away carry-over carry tray put on first buffer position keep in, consequently automatic access arrangement can move the goods on the three-dimensional goods shelves to first buffer position along the track in succession, a plurality of AGVs also can get goods from a plurality of first buffer positions simultaneously, AGV gets goods and automatic access arrangement gets goods and gets goods each other and does not influence, avoid AGV and automatic access arrangement to wait for each other, improve the conveying efficiency that the system was selected to goods, satisfy the goods and select the business scene that system throughput required height.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of an embodiment of a cargo sorting system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a cargo storage area in an embodiment of the cargo sorting system according to the present invention;

fig. 3 is a schematic structural diagram of a third conveying device in an embodiment of the cargo sorting system according to the present invention;

fig. 4 is a schematic structural diagram of a first cargo sorting area in an embodiment of the cargo sorting system according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

The embodiment of the utility model provides a goods system of selecting. The details will be described below.

Firstly, the embodiment of the utility model provides a goods sorting system, this goods sorting system includes a plurality of AGV, along the goods storage area and the first goods sorting area of first direction interval arrangement; the goods storage area comprises a plurality of three-dimensional goods shelves which are arranged at intervals along a second direction, a plurality of loaded trays are stored on the three-dimensional goods shelves, a cache bracket is arranged on one side of each three-dimensional goods shelf, which faces the first goods sorting area, and comprises a plurality of first cache positions which are arranged along the first direction, a track which extends along the first direction is arranged between every two adjacent three-dimensional goods shelves, and an automatic access device which moves along the track is arranged on the track and is used for acquiring the loaded trays from the three-dimensional goods shelves and conveying the loaded trays to the first cache positions on the cache bracket along the track; and the AGVs are used for acquiring the loaded trays from the first cache positions and moving the loaded trays to the first goods sorting area for sorting.

Referring to fig. 1-4, fig. 1 is a schematic diagram of an overall structure of an embodiment of a cargo picking system according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a cargo storage area in an embodiment of the cargo sorting system according to the present invention; fig. 3 is a schematic structural diagram of a third conveying device in an embodiment of the cargo sorting system according to the present invention; fig. 4 is a schematic structural diagram of a first cargo sorting area in an embodiment of the cargo sorting system according to the present invention.

In the embodiment of the present invention, the cargo sorting system 10 includes a plurality of AGVs 15, a cargo storage area 11 and a first cargo sorting area 12 arranged at intervals along a first direction F1. An AGV (Automated Guided Vehicle) is a Vehicle equipped with an electromagnetic or optical automatic guide device, which can travel along a predetermined guide path and has safety protection and various transfer functions. AGV15 can be a laser navigation forklift AGV, and mainly comprises an AGV body, a lifting device and the like. The laser navigation forklift AGV undertakes lifting and carrying work of no-load trays, loaded trays and the like. The system is applied to storage logistics, paper mills, three-dimensional warehouses and the like at present, and rapid deployment of logistics transportation automation application is realized, so that labor cost is saved, and production efficiency is improved.

In the embodiment of the present invention, the goods storage area 11 includes a plurality of three-dimensional shelves 111 arranged at intervals along the second direction F2. The storage mode of the warehouse is developed from plane storage to high-level three-dimensional storage, and the three-dimensional shelf becomes the main body of the three-dimensional warehouse. Various automatic and mechanized warehouses composed of shelves of various forms meeting different functional requirements have become important links in warehousing systems and whole logistics systems or production process flows.

A plurality of loaded trays are stored on the stereoscopic shelf 111, and a buffer bracket 115 is arranged on one side of the stereoscopic shelf 111 facing the first goods sorting area 12. The buffer bracket 115 comprises a plurality of first buffer positions 116 arranged along a first direction F1, a track 112 extending along the first direction F1 is arranged between two adjacent stereoscopic shelves 111, an automatic access device 113 moving along the track 112 is arranged on the track 112, and the automatic access device 113 is used for acquiring loaded trays from the stereoscopic shelves 111 and conveying the loaded trays to the first buffer positions 116 on the buffer bracket 115 along the track 112; a plurality of AGVs 15 are used to retrieve loaded trays from first buffer bay 116 and move the loaded trays to first goods sorting area 12 for sorting.

The automatic access device 113 may be a single-stretching stacker, or may be a double-stretching stacker. The access efficiency of the automatic access device 113 can be improved by adopting the double-extension stacker. The stacker is the most important lifting and transporting equipment in the stereoscopic warehouse and is a mark representing the characteristics of the stereoscopic warehouse. The stacker moves back and forth on the track 112, and takes out the loaded trays in the goods grids on the stereoscopic shelf 111 and places the loaded trays in the first buffer position 116, or places the loaded trays in the first buffer position 116 in the goods grids on the stereoscopic shelf 111.

The utility model discloses a one side at automatic access arrangement's 113 track 112 of traveling sets up a plurality of first buffer position 116, make automatic access arrangement 113 can come too late area that the transport was taken away to AGV15 along track 112 and carry the tray and put on first buffer position 116 and keep in, consequently automatic access arrangement 113 can move the goods on three-dimensional goods shelves 111 to first buffer position 116 along track 112 in succession, a plurality of AGVs 15 also can get goods from a plurality of first buffer position 116 simultaneously, AGV15 gets goods and automatic access arrangement 113 gets goods and does not influence each other, avoid 15 and automatic access arrangement 113 to wait for each other, improve the conveying efficiency of AGV system 10 is selected to the goods, satisfy the goods and select the high business scene of system 10 throughput requirement.

The embodiment of the utility model provides an in, it has a plurality of first packing boxes that are equipped with the goods to pile up on the area carries the tray, and first goods sorting district 12 is including the robot 121 that destacks that is used for whole case unstacking. The unstacking robot 121 is provided with a first sorting location 122 at a side thereof adjacent to the goods storage area 11. A first conveyor 124 is provided on a side of the unstacking robot 121 remote from the goods storage area 11, a plurality of AGVs 15 are used to move the loaded trays to the first sorting location 122, and the unstacking robot 121 is used to unstack the first containers in the loaded trays and move the unstacked first containers to the first conveyor 124. The first transmission device 124 may be a roller conveyor, a belt conveyor, or the like. The unstacking robot 121 can be a four-axis mechanical arm, a six-axis mechanical arm and other types of mechanical arms, and the utility model discloses do not limit this. The common six-axis mechanical arm comprises a rotation (S axis), a lower arm (L axis), an upper arm (U axis), a wrist rotation (R axis), a wrist swing (B axis) and a wrist rotation (T axis). The six joints are combined to realize six-degree-of-freedom movement of the tail end, so that a first container on the loading tray can be unstacked and placed on the first conveying device 124.

In the embodiment of the present invention, the unstacking robot 121 may be 1 or multiple, and one side of each unstacking robot 121 close to the goods storage area 11 is provided with a plurality of first sorting positions 122. The plurality of unstacking robots 121 are arranged along the second direction F2, and the plurality of first picking positions 122 are arranged along the second direction F2. Preferably, the first direction F1 and the second direction F2 are perpendicular.

The embodiment of the utility model provides an in, the top of first selection position 122 is equipped with camera 123, and camera 123 is used for shooing the first packing box on the first selection position 122 and obtains the goods image, and the robot that breaks a jam 121 breaks a jam according to the first packing box on the first selection position 122 of goods image pair. Specifically, a camera support is disposed at one side of the first picking position 122. The camera mount is used to hang the camera 123. The camera may be any one of a binocular depth camera, a structured light depth camera, and a light time of flight depth camera.

In the embodiment of the present invention, the first goods sorting area 12 further includes a plurality of second sorting locations 126, and the plurality of second sorting locations 126 and the plurality of first sorting locations 122 are arranged along the second direction F2. The first transporting device 124 transports goods in the second direction F2, a second transporting device 125 transporting goods in the second direction F2 is disposed between the first transporting device 124 and the second picking position 126, a distal end of the second transporting device 125 is connected to the first transporting device 124, and the second transporting device 125 is spaced apart from the second picking position 126. The first transmission device 124 may be a roller conveyor, a belt conveyor, or the like.

In the embodiment of the present invention, the goods sorting system 10 further includes an automatic code disc machine 127, the automatic code disc machine 127, a plurality of second sorting positions 126 and a plurality of first sorting positions 122 are arranged along the second direction F2, the plurality of AGVs 15 further move the empty tray on the plurality of second sorting positions 126 and the plurality of first sorting positions 122 to the automatic code disc machine 127, and the automatic code disc machine 127 is used for code disc the empty tray. The automatic stacker 127, also known as a pallet collector, is used to automatically stack pallets into a stack (typically 6-10). AGV15 transports unloaded tray to automatic code wheel machine 127 and forms the tray buttress back via automatic code wheel machine 127 code wheel, transports the tray buttress again to assigned position, can avoid AGV15 to only transport a tray once, improves AGV 15's utilization ratio, satisfies the business scene that throughput requires high.

The embodiment of the utility model provides an in, goods storage area 11 and first goods are chosen and still are equipped with goods buffer area 13 between the district 12, and goods buffer area 13 is equipped with a plurality of second buffer positions 131, and a plurality of second buffer positions 131 are used for the first tail dish of choosing on the position 122 of buffer memory and the area on the first buffer position 116 to carry the tray, and wherein, the tail dish still loads the area that carries the tray that has the goods after the machine people that breaks a jam 121 and breaks a jam and finishes. For example, after the unstacking robot 121 performs one-time unstacking to meet the demand of the first conveying device 124, the unstacking robot 121 stops unstacking, and the tray on the first sorting location 122 contains goods and serves as a tail tray. The goods buffer area 13 is arranged to buffer the tail disc, residual goods in the tail disc do not need to be placed back to the three-dimensional shelf 111 again, the tail disc can be prevented from occupying the sorting position on the first sorting position 122, the loaded trays of other product gauges are affected, and multi-product gauge sorting is achieved.

The embodiment of the utility model provides an in, system 10 is selected to goods still includes second goods sorting district 14, second goods sorting district 14 and goods buffer 13 are arranged at the interval on second direction F2, second goods sorting district 14 includes a plurality of third sorting position 141 of arranging along first direction F1 interval, one side that goods buffer 13 was kept away from to third sorting position 141 is equipped with third transmission device 142, third transmission device 142 is used for acquireing and accepts unloaded second packing box to the second packing box that will carry removes to next functional area.

In the embodiment of the present invention, the third conveying device 142 includes a first conveying line 143 and a second conveying line 144 arranged at an interval. The first and second conveying

lines

143, 144 extend in a first direction F1, the first conveying line 143 being located on a side of the second conveying line 144 remote from the third picking position 141. At least one third transfer line 145 and at least one fourth transfer line 146 are connected between the first transfer line 143 and the second transfer line 144. The beginning of the first conveyor line 143 is adapted to receive an empty second container, the third conveyor line 145 is adapted to move an empty second container from the first conveyor line 143 to the second conveyor line 144, and the fourth conveyor line 146 is adapted to move a second container from the second conveyor line 144 loaded with goods to the first conveyor line 143. The first transfer line 143, the second transfer line 144, the third transfer line 145, and the fourth transfer line 146 may each be a drum conveyor, a belt conveyor, or the like.

Further, the first conveying line 143 includes a first turning device 1432 and a first sub-conveying line 1431 and a second sub-conveying line 1433 extending in the first direction F1, the first turning device 1432 connects one end of the first sub-conveying line 1431, one end of the second sub-conveying line 1433, and one end of the third conveying line 145, the second conveying line 144 includes a second turning device 1442 and a third sub-conveying line 1441 and a fourth sub-conveying line 1443 extending in the first direction F1, and the second turning device 1442 connects one end of the third sub-conveying line 1441, one end of the fourth sub-conveying line 1443, and the other end of the third conveying line 145. The first steering device 1432 may be a jacking belt or a balance wheel; the second steering device 1442 may be a lift-up belt or a balance.

Specifically, a pressure sensor or a code scanning device is arranged on the first steering device 1432, and the first steering device 1432 is used for steering the second container unloaded on the first sub-conveying line 1431 to move to the third conveying line 145. The second diverting device 1442 is used to divert the second containers empty on the third conveyor line 145 for transfer to the third sub-conveyor line 1441 and the fourth sub-conveyor line 1443. The empty second containers enter the third and fourth

subsidiary transport lines

1441 and 1443, are loaded manually or by machine, and then return to the first transport line 143 via the fourth transport line 146, and enter the next functional area.

It should be noted that the cargo picking System 10 of the present invention can be controlled by WMS (route Management System) and WCS (route Control System). WMS is a real-time computer software system that is able to manage information, resources, activities, inventory and distribution operations more perfectly, according to the business rules and algorithms of operation, maximizing their requirements. The WCS is a layer of management control system interposed between the WMS and the PLC system of each device. The system interacts information with the WMS system, receives the instruction of the WMS system and sends the instruction to the PLC system of each device, and therefore the devices in the cargo picking system 10 are driven to generate corresponding mechanical actions.

The utility model discloses system 10 is selected to goods can realize that the whole case of many article rules is selected, tear open zero replenishment or select. Wherein the whole box picking comprises two processes of picking and replenishment,

the whole box picking process is as follows:

s11, the WMS generates a whole-box delivery order and issues the whole-box delivery order to the WCS;

s12, the WCS system dispatches the AGV15 to the designated first buffer position 116, and automatically transports the loaded tray to the first picking position 122 or the second picking position 126;

s13, after the loaded trays are in place at the first picking position 122 or the second picking position 126, the unstacking robot 121 unstacks the first picking position 122 or manually unstacks and picks the second picking position 126, picks a specified number of first containers according to the order information, places the first containers on the first conveying device 124 or the second conveying device 125, and conveys the first containers to the next functional area through the first conveying device 124 or the second conveying device 125;

s14, after unstacking is completed, the WCS system dispatches the AGV15 to convey the tail tray to the appointed second buffer position 131 of the goods buffer area 13, and conveys the unloaded tray to the automatic code disc machine 127 for code disc.

The replenishment process of whole box picking is as follows:

s21, the WMS generates a replenishment shipment order and issues the replenishment shipment order to the warehousing control system WCS;

s22, the WCS dispatching automatic access device 113 takes the appointed goods out of the three-dimensional shelf 111 and stores the goods in the buffer bracket 115;

s23, when the buffer bracket 115 is in place, the WCS system dispatches the AGV15 to transport the goods to the goods buffer 13 to be stored in the appointed goods position.

The specific procedures of removing the parts and replenishing or selecting are as follows:

s31, the WMS generates a retail replenishment shipment order and issues the retail replenishment shipment order to the WCS;

s32, the WCS system dispatches the AGV15 to the designated goods location and automatically transports the goods to the third sorting location 141;

and S33, manually unstacking the third sorting position 141 after the goods are in place in the third sorting position 141, and performing box changing or boxing and other actions on the goods according to the order information and the size of the goods units to realize a sorting task. The goods are then transported to the next functional area by the third transport device 142;

s34, after the parts are disassembled and the goods are replenished, the WCS system dispatches the AGV15, carries the tail tray to the goods buffer area 13 to designate the goods position, and carries the empty tray to the automatic code disc machine 127 for code disc.

The above detailed description is made on a cargo sorting system provided by the embodiment of the present invention, and the principle and the implementation of the present invention are explained by applying a specific example, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be some changes in the specific implementation and application scope, and in summary, the content of the description should not be understood as a limitation to the present invention.

Claims

1. The goods sorting system is characterized by comprising a plurality of AGVs, goods storage areas and a first goods sorting area, wherein the goods storage areas and the first goods sorting area are arranged at intervals along a first direction;

2. The cargo picking system according to claim 1, wherein a plurality of first containers with cargo are stacked on the pallets, the first cargo picking area comprises an unstacking robot for unstacking whole boxes, a plurality of first picking positions are arranged on one side of the unstacking robot close to the cargo storage area, a first conveying device is arranged on one side of the unstacking robot far away from the cargo storage area, the AGVs are used for moving the pallets with cargo to the first picking positions, and the unstacking robot is used for unstacking first containers in the pallets with cargo and moving the unstacked first containers to the first conveying device.

3. The cargo picking system of claim 2, wherein a camera is disposed above the first picking position, the camera is used for photographing a first cargo box on the first picking position to obtain a cargo image, and the unstacking robot unstacks the first cargo box on the first picking position according to the cargo image.

4. The cargo picking system of claim 2, wherein the first cargo picking zone further comprises a plurality of second picking positions, the plurality of second picking positions and the plurality of first picking positions are arranged along the second direction, the first conveying device conveys the cargo along the second direction, a second conveying device for conveying the cargo along the second direction is arranged between the first conveying device and the second picking positions, the second conveying device is connected to the first conveying device at an end, and the second conveying device is spaced apart from the second picking positions.

5. The cargo picking system of claim 4, further comprising an automatic code wheel loader, the second picking positions and the first picking positions arranged in the second direction, the AGVs further operable to move empty trays on the second picking positions and the first picking positions to the automatic code wheel loader, the automatic code wheel loader operable to code empty trays.

6. The cargo picking system according to claim 4, wherein a cargo buffer is further provided between the cargo storage area and the first cargo picking area, the cargo buffer is provided with a plurality of second buffer locations for buffering a tail tray on the first picking location and a loaded tray on the first buffer location, wherein the tail tray is the loaded tray which is loaded with the cargo after the unstacking by the unstacking robot is completed.

7. The cargo picking system of claim 6, further comprising a second cargo picking area, the second cargo picking area and the cargo buffer area being spaced apart in the second direction, the second cargo picking area including a plurality of third picking positions spaced apart along the first direction, a third conveying device being provided on a side of the third picking positions remote from the cargo buffer area.

8. The system as claimed in claim 7, wherein the third conveyor means includes first and second spaced apart conveyor lines extending in the first direction, the first conveyor line being located on a side of the second conveyor line remote from the third picking station, at least one third conveyor line and at least one fourth conveyor line being connected between the first and second conveyor lines, the first conveyor line having a beginning for receiving an empty second container, the third conveyor line being adapted to move an empty second container of the first conveyor line to the second conveyor line, and the fourth conveyor line being adapted to move a second container of the second conveyor line loaded with goods to the first conveyor line.

9. The cargo picking system of claim 8, wherein the first transfer line includes a first diverting device and first and second sub-transfer lines extending in the first direction, the first diverting device connecting one end of the first sub-transfer line, one end of the second sub-transfer line, and one end of the third transfer line, the second transfer line includes a second diverting device and third and fourth sub-transfer lines extending in the first direction, and the second diverting device connecting one end of the third sub-transfer line, one end of the fourth sub-transfer line, and the other end of the third transfer line.

10. The cargo picking system of claim 1, wherein the automated access device is a single reach stacker or a double reach stacker.