Automated Tallying and Sorting Logistics System and Method for Multiple Materials

Abstract

The invention discloses an automated sorting logistics system and method for multiple materials. Goods enter the outer ring conveyor belt one by one. According to the type, relative position and initial time of a single item, the sorting device for the classified goods into which it is to be classified is determined. The item is temporarily stored in the sorting device for the classified goods of this type. According to the order content, the loading boxes on the inner ring conveyor belt are successively sorted by unloading through several corresponding sorting devices for the classified goods until the order content is completed. After the loading boxes on the inner ring conveyor belt complete the loading of the goods for the order content, they are shipped out from the incoming and outgoing conveyor mechanism. When facing a large number of order operations, the order sorting production line of the invention operates at full load, with a large sorting density, high efficiency, a compact time utilization rate and sufficient production capacity.

Description

Technical Field

[0001] The present invention relates to the sorting technical field of logistics technology, mainly to sorting automation technology, specifically an automated goods sorting and logistics system and method for multiple materials. Background Art

[0002] With the development of society, the scale of e-commerce is getting larger and larger, which drives the rapid development of the logistics industry. During the shipping process, goods sorting and picking is an important process. Goods sorting and picking means that the warehousing center determines the specified commodity names, quantities, and storage bin addresses according to the order, takes out the goods from the shelves or stacks, and moves them to the goods sorting place. Improving the unit sorting speed can effectively improve the operation ability of the entire warehousing center. As user demands develop towards small batches and multiple varieties, the types and quantities of express deliveries distributed by the logistics center will increase sharply. The picking process is the most labor-consuming and time-consuming operation, becoming the core process of the logistics distribution center. The modernization level of the logistics distribution center depends on the picking technology and the picking working method, and directly affects the operation efficiency and economic benefits of the distribution center. However, most of the current picking systems in domestic logistics centers still use the traditional method of manually checking the delivery note. This sorting method requires the sorting personnel to be very familiar with the sorted goods and their bin distributions, and more importantly, it requires the sorting personnel to spend a lot of time and energy on goods verification and bin searching. The labor intensity is high but the work efficiency is not high, and the error rate is also high. The existing automated sorting systems have a large floor area and low coordination in synchronous operations, resulting in low order completion efficiency and long time consumption. Summary of the Invention

[0003] In view of the deficiencies of the above-mentioned existing technologies, the inventor has developed and designed a new automated goods sorting and logistics system and control method, which can complete the goods sorting work with high coordination, high efficiency, and short time consumption in a relatively small area. Specifically, the present invention is implemented as follows:

[0004] An automated goods sorting and logistics system for multiple materials includes a feeding conveyor mechanism, a goods identification mechanism, a sorting device loading box, an incoming and outgoing conveyor mechanism, and a controller.

[0005] The sorting device includes: an outer ring conveyor belt and an inner ring conveyor belt distributed in an inner and outer double-ring shape. The feeding conveyor mechanism is connected to the outer ring conveyor belt for feeding. A goods identification mechanism connected to the controller is provided at the feeding position on the outer ring conveyor belt. The outer ring conveyor belt and the inner ring conveyor belt are connected by a number of partial goods buffer sorting devices. The loading box can move on the inner ring conveyor belt and enter and exit through the incoming and outgoing conveyor mechanism.

[0006] The classified goods buffer sorting devices are all connected to the controller and are used for feeding, storing, discharging and shipping at least one kind of materials of the same type, model or category. The sorting devices are distributed around between the outer ring conveyor belt and the inner ring conveyor belt. The feeding port is docked to the outer ring conveyor belt, and the discharging port is docked to the inner ring conveyor belt.

[0007] The box loading mechanism is connected to the inner ring conveyor belt and can import empty cargo boxes onto the inner ring conveyor belt under the signal control of the controller.

[0008] The shipping mechanism is connected to the inner ring conveyor belt and can pick out the cargo boxes from the inner ring conveyor belt for shipping under the signal control of the controller.

[0009] Goods enter the outer ring conveyor belt one by one, and species identification is carried out, and their relative positions and initial times when entering are recorded. According to the species, relative positions and initial times of single goods, the classified goods buffer sorting device to which they are to be assigned is calculated and determined, and the goods enter the classified goods buffer sorting device of this kind of goods for temporary storage. There are several classified goods buffer sorting devices distributed on the outer ring conveyor belt. The cargo boxes on the inner ring conveyor belt are sorted for unloading through the corresponding several classified goods buffer sorting devices in sequence according to the order content until the order content is completed. After the cargo boxes on the inner ring conveyor belt complete the loading of the goods in the order content, they leave the inner ring conveyor belt from the entrance of the next shipping mechanism on their moving path and enter the shipping mechanism to complete the shipping.

[0010] Introduction to the working principle of the present invention: The sorting device of the present invention includes an outer loop conveyor belt and an inner loop conveyor belt that are distributed in a double-ring shape inside and outside. The outer loop conveyor belt is used as a goods sorting assembly line, while the inner loop conveyor belt is used as a goods sorting assembly line. According to the order requirements, after the goods are collected on the inner loop conveyor belt, they are shipped through the shipping mechanism to form a summary of the goods for each order, and then sent to the logistics shipping area to enter the next logistics link. All goods can be directly placed on the conveyor belt before the feeding conveyor mechanism without manual screening and classification, and automatically pass through the feeding conveyor mechanism for spacing and single-order arrangement and transportation between the goods, and then enter the outer loop conveyor belt one by one. The goods recognition mechanism uses machine vision equipment to identify the types of goods falling on the outer loop conveyor belt, record the time information when the goods are recognized and the position information on the outer loop conveyor belt, and then calculate the time information for the single-piece goods to move from the outer loop conveyor belt to the corresponding classified goods buffer sorting device according to the rotation speed and size of the outer loop conveyor belt. When the time recorded by the time information reaches, the corresponding classified goods buffer sorting device is controlled to pick up the single-piece goods at the accurate time point. In this way, the classification and sorting work of the goods can be realized on the outer loop conveyor belt, and the goods are continuously sorted by type and stored in the corresponding classified goods buffer sorting device. At the same time, every time an empty cargo box enters the inner loop conveyor belt, using the same method, according to the time point when the cargo box enters, the relative position on the inner loop conveyor belt, the position of each classified goods buffer sorting device relative to the inner loop conveyor belt, and the running speed information of the inner loop conveyor belt, and according to the goods details of the order content, it is possible to calculate the classified goods buffer sorting devices that the cargo box needs to pass through to complete all the goods details, as well as the order and time points when passing through each classified goods buffer sorting device, and then assign tasks to each classified goods buffer sorting device to ship into the cargo box at the scheduled time until the cargo box rotates 1 or N circles on the inner loop conveyor belt to complete the sorting work of the order, and then complete the order shipment from the shipping mechanism. The double-ring structure of the present invention, whether designed as an upper and lower double layer or an inner and outer double layer, can greatly improve the utilization rate of the floor area, avoid the length requirement of the long strip-shaped production line for the workshop, and on the other hand, use the double-ring structure to meet the docking and synchronous collaborative operation of the classified goods buffer sorting device for the outer and inner loop conveyor belts, overall meeting the synchronous operation of sorting and sorting, realizing the full-load operation of multiple-line tasks at the same time, and improving the sorting efficiency of the order.

[0011] Introduction to the beneficial effects of the present invention compared with the prior art:

[0012] (1) The design of the double-ring outer-loop conveyor belt and inner-loop conveyor belt meets the characteristics of synchronization in tally sorting and high collaborative operation efficiency. A number of classified goods buffer sorting devices are arranged between the outer and inner-loop conveyor belts, forming a compact connection to achieve synchronous operation and improving the equipment floor space utilization rate.

[0013] (2) The loop design can always keep the inner-loop conveyor belt fully loaded without space waste. For each completed order, the cargo box takes in and discharges goods, generating the sorting operation of new orders. When facing high-order quantity operations, the order sorting production line runs at full load, with a large sorting density, high efficiency, compact time utilization, and sufficient production capacity.

[0014] (3) The system control is effectively stable. Based on the relationships of time, position, speed, and sequence, the sorting cycle and control nodes of the entire order can be accurately calculated, meeting the simultaneous sorting requirements of multiple threads and multiple order quantities, achieving precise control, and satisfying the continuous sorting work of the entire order. Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the blanking principle of the classified goods buffer sorting device of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the storage conveyor belt inside the body of the goods buffer sorting device of the present invention;

[0017] Figure 3 It is a schematic diagram of the overall structure composition of the present invention;

[0018] Figure 4 、 5 It is a three-dimensional structure diagram of the flap device of the present invention;

[0019] Figure 6 It is a schematic diagram of the process steps of the automatic tally sorting method for multiple materials of the present invention;

[0020] Figure 7 It is a schematic diagram of the order sorting process steps of the present invention;

[0021] Among them: 1 - goods, 2 - feeding conveyor mechanism, 3 - goods identification mechanism, 4 - sorting device, 5 - cargo box, 7 - controller, 41 - outer-loop conveyor belt, 42 - inner-loop conveyor belt, 43 - classified goods buffer sorting device, 431 - feeding telescopic push rod, 432 - body of the goods buffer sorting device, 433 - blanking conveyor belt, 434 - storage conveyor belt, 61 - shipping conveyor belt, 62 - receiving conveyor belt, 64 - RFID reader / writer, 8 - flap device. Detailed Embodiment

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the appended Figures 1 to 7 , without limiting the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0023] The machine vision device, the classified goods buffer sorting device 43, the box-in mechanism, the shipping mechanism, etc. described in this embodiment for the technologies of unloading, transferring, and in-out scheduling of goods belong to the prior art and prior art means, and this embodiment will not elaborate on the prior art. The types of goods described in this embodiment can be the packaging external structure of the goods, such as boxed, bagged, barreled, etc., or the model types set according to the external size, etc. The specific definition of the types will not be emphasized in detail later, and the types or categories can be divided and set according to production requirements. Correspondingly, for different specifications and types of goods in the face pile, the specific structure of the classified goods buffer sorting device 43 may also vary and corresponding adjustments need to be made. The present invention provides the specific methods, the connection composition relationships between the systems and devices, and does not introduce the specific structures of specific products in detail. The unloading and feeding methods of single-piece goods belong to the prior art.

[0024] Embodiment 1: An automated tallying and sorting logistics system for multiple materials, including a feeding conveyor mechanism 2, a goods identification mechanism 3, a sorting device 4, a cargo box 5, a box-in mechanism, a shipping mechanism, and a controller 7. The sorting device 4 includes an outer ring conveyor belt 41 and an inner ring conveyor belt 42 that are distributed in an inner and outer double-ring circular pattern. The feeding conveyor mechanism 2 is connected to the outer ring conveyor belt 41 for feeding. A goods identification mechanism 3 connected to the controller 7 is provided at the feeding position on the outer ring conveyor belt 41. The outer ring conveyor belt 41 and the inner ring conveyor belt 42 are connected by a number of classified goods buffer sorting devices 43. The cargo box 5 can move on the inner ring conveyor belt 42 and enter and exit through the box-in mechanism and the shipping mechanism. The classified goods buffer sorting devices 43 are all connected to the controller 7 and at least correspond to one kind of the same kind, same model, or same type of material for feeding storage and discharging. They are distributed around the sorting device 4 between the outer ring conveyor belt 41 and the inner ring conveyor belt 42. The feeding port is docked to the outer ring conveyor belt 41, and the discharging port is docked to the inner ring conveyor belt 42. There is at least one set of box-in mechanism and shipping mechanism, which are connected to the inner ring conveyor belt 42 and can, under the signal control of the controller 7, send the cargo box 5 on the inner ring conveyor belt 42 to the shipping mechanism for shipping, and can also import an empty cargo box 5 from the box-in mechanism into the inner ring conveyor belt 42.

[0025] When this system operates, all goods 1 can be directly placed on the conveyor belt of the feeding conveyor mechanism without manual screening and classification, and automatically pass through the feeding conveyor mechanism 2 for the distance pulling and single sequential arrangement and transportation among goods 1, and enter the outer ring conveyor belt 41 one by one. The goods identification mechanism 3 uses machine vision equipment to identify the types of goods 1 falling on the outer ring conveyor belt 41, record the time information when the goods are identified and the position information on the outer ring conveyor belt 41, and then calculate the time information for this single piece of goods to move from the outer ring conveyor belt 41 to the corresponding classified goods buffer sorting device 43 according to the rotation speed and size of the outer ring conveyor belt 41. When the time recorded in the time information arrives, control the corresponding classified goods buffer sorting device 43 to pick up this single piece of goods at the accurate time point. In this way, the classification and sorting work of goods 1 can be realized on the outer ring conveyor belt 41, and the goods are continuously sorted by type and stored in the corresponding classified goods buffer sorting device 43. For example, this system is provided with five types of classified goods buffer sorting devices numbered 1 to 5 for storing goods a, goods b, goods c, goods d, and goods e respectively. Among them, the classified goods buffer sorting device: No. 1 is at the 8 o'clock direction, No. 2 is at the 4 o'clock direction, No. 3 is at the 2 o'clock direction, No. 4 is at the 12 o'clock direction, and No. 5 is at the 10 o'clock direction; the goods b falling from the goods distance regulating machine onto the outer ring conveyor belt 41 first passes through the machine vision equipment with a fixed position, and is identified as goods b by the machine vision equipment, and the time t1 at this time is recorded. The controller 7 calculates the time t2 required for the goods b to reach point B from point O at the conveying speed v1 of the outer ring conveyor belt 41 based on the fixed position O point of the machine vision equipment and the position B of the No. 2 classified goods buffer sorting device where the goods b of the corresponding type of goods b is stored. It can be judged that the No. 2 classified goods buffer sorting device performs the picking operation on the goods b after t1 + t2 time. This instruction is generated as a task signal by the controller 7. When the time of t1 + t2 arrives, the feeding telescopic push rod 431 of the No. 2 classified goods buffer sorting device is immediately started, and the goods b is pushed and dropped into the goods buffer sorting device body 432 of the No. 2 classified goods buffer sorting device, completing the picking of the goods b. And so on, the sorting and classification operation of each piece of goods entering the outer ring conveyor belt 41 is realized.

[0026] Meanwhile, every time an empty cargo box 5 enters the inner loop conveyor belt 42, in the same way, based on the time point when the cargo box 5 enters, its relative position on the inner loop conveyor belt 42, the positions of each classified goods buffer sorting device 43 relative to the inner loop conveyor belt 42, and the operating speed information of the inner loop conveyor belt 42, and according to the item details of the order content, it is possible to calculate the classified goods buffer sorting devices 43 that the cargo box 5 needs to pass through to complete all the items 1 in the order, as well as the sequence and time points when passing through each classified goods buffer sorting device 43. Then, tasks can be assigned to each classified goods buffer sorting device 43 to achieve shipment into the cargo box 5 at the scheduled time. Until the cargo box 5 rotates 1 or N circles on the inner loop conveyor belt 42, the sorting work of the order is completed, and then the order is shipped out from the shipping mechanism. Continuing with the previous example: When the first empty cargo box U1 enters the inner loop conveyor belt 42, the RFID reader 64 senses the RF card on the cargo box 5, or through optoelectronic identification technology, the cargo box 5 can be identified. The controller 7 obtains the entry time t0 of the cargo box U1 and its entry position Y point. The controller 7 assigns an order task to the cargo box U1. The number of items in this order task is 2 pieces of item a, 1 piece of item c, and 1 piece of item e. Subsequently, it can be immediately calculated that the cargo box U1 located at point Y needs to first pass through the No. 3 classified goods buffer sorting device to obtain 1 piece of item c when sorting the above items. At the same time, it can be calculated that the cargo box U1 reaches the No. 3 classified goods buffer sorting device after t3 time, and the shipment task time of the No. 3 classified goods buffer sorting device is generated: t0 + t3; after t4 time, it reaches the No. 5 classified goods buffer sorting device, and the shipment task time is: t0 + t4; after t5 time, it reaches the No. 1 classified goods buffer sorting device, and the shipment task time is: t0 + t5; after running for a week and reaching the No. 1 classified goods buffer sorting device for the second time, the shipment task time for loading the second piece of item a is t0 + t6; and after the cargo box U1 completes the order, it can be obtained that the next exit on its path is the middle shipping mechanism in the middle, and the task time to reach this middle shipping mechanism is t0 + t7; then the working task time instructions of each component can be recorded well, waiting for the cargo box U1 to be shipped. The incoming conveyor belt 62 is started, and a new empty cargo box U2 is replenished, and a new order task to be sorted is continued to be matched, and so on. In addition, a left box-in mechanism and a left shipping mechanism are provided on the left side of the overall equipment, and a right box-in mechanism and a right shipping mechanism are provided on the right side of the overall equipment. The number and distribution positions of the box-in mechanism and the shipping mechanism can be set according to the actual production requirements.

[0027] The classified goods caching and sorting device 43 includes a feed telescopic push rod 431, a goods caching and sorting device body 432, and a discharge conveyor belt 433, wherein: the feed telescopic push rod 431 is installed on the outside of the outer ring conveyor belt 41, and can be extended to push the goods on the ring conveyor belt into the goods caching and sorting device body 432; the discharge conveyor belt 433 is located at the bottom of the goods caching and sorting device body 432, and its end is connected to the cargo box 5 above the inner ring conveyor belt 42, and can discharge the goods 1 in the goods caching and sorting device body 432 into the cargo box 5 on the inner ring conveyor belt 42;

[0028] The box feeding mechanism and the shipping mechanism are composed of two conveyor belts with opposite transport directions, one of which is the shipping conveyor belt 61, and the other is the shipping conveyor belt 62 for the empty cargo box 5 to enter. At the end of the shipping conveyor belt 61, at the opposite end on the other side of the inner ring conveyor belt 42, there is a Figure 4 The flip device shown, when the cargo box on the flip device completes the order task and reaches the intersection of the shipping conveyor 61, the flip device will perform a flipping movement under the control of the controller 7, so that the cargo box 5 above it slides into the shipping conveyor 61 to complete the shipment;

[0029] An RFID reader / writer 64 connected to the controller 7 is provided at the end of the shipping conveyor belt 61 near the inner ring conveyor belt 42, and a corresponding RFID card is provided on the cargo box 5. The RFID reader / writer 64 is used to determine the time and position information of the cargo box 5 exiting the inner ring conveyor belt 42.

[0030] The double-ring structure of the present invention, whether designed as an upper and lower double-layer ring or an inner and outer double-layer ring, can greatly improve the utilization rate of the land, and avoid the length requirement of the delivery room for the long strip assembly line. On the other hand, the double-ring structure can meet the requirements of the classified goods caching and sorting device 43 and simultaneously cope with the docking and synchronous collaborative operation of the outer and inner ring conveyor belts, which overall meets the synchronous operation of tallying and sorting, realizes the simultaneous full-load operation of multiple line tasks, and improves the sorting efficiency of orders.

[0031] Preferably, the cargo buffering and sorting device body 432 is equipped with several layers of storage conveyor belts 434 running in opposite directions. The cargo is sequentially dropped onto each layer of storage conveyor belts 434 in a serpentine pattern, ultimately being discharged from the bottom storage conveyor belt 434 onto the inner loop conveyor belt 42. The speed of each storage conveyor belt 434 is set to be the same, enabling overall control. The distance between adjacent cargo items 1 is maintained across multiple storage conveyor belts 434, ensuring that only one cargo item 1 is dropped into the loading container 5 each time the unloading conveyor belt 433 is activated.

[0032] Example 2: Automated sorting method for various materials, such as Figure 6 、 7As shown

[0033] Step S1: The materials are successively fed onto the outer ring conveyor belt 41 one by one on the feeding conveyor mechanism 2, and the type information of each single item placed is identified by machine vision, and the entry time point information of the single item of goods is synchronously recorded. The type information and the time point information are sent to the controller 7. That is, during the sorting process, every time the machine vision successfully identifies the type information of a commodity, a sorting task is generated. If the identification is unsuccessful, the push rod device of the error correction and rejection device pushes it off the outer ring conveyor belt 41, and then waits for it to be replenished from the feeding conveyor mechanism 2 later;

[0034] Step S2: After the controller 7 receives the type information and the time point information of each single item of goods, it finds the classified goods cache sorting device 43 corresponding to the type on the outer ring conveyor belt 41 according to the type information, and calculates the time information when the single item of goods reaches the area of the classified goods cache sorting device 43 based on the distance information from the position of the classified goods cache sorting device 43 to the position where the single item of goods enters the outer ring conveyor belt 41 and the conveying speed of the outer ring conveyor belt 41. When the time information arrives, the controller 7 controls the classified goods cache sorting device 43 to sort the single item of goods into the goods cache sorting device body 432, completing the classified sorting process of all the goods on the outer ring conveyor belt 41, and forming several classified goods cache sorting devices 43 storing single types of goods, which are evenly distributed in a ring on the outer ring conveyor belt 41. That is, after each successful identification and classification of a commodity, the classified goods cache sorting device 43 to which it is to be classified is determined. The classified goods cache sorting devices 43 can be added and set arbitrarily according to the type quantity, with convenient combination and the quantity design can be adjusted as needed;

[0035] Step S3: The controller 7 arranges the sorting work based on each received order task. It identifies and records the position and time information of the empty cargo box 5 when it enters the inner loop conveyor belt 42, matches it with the order task, calculates the task instructions for each corresponding classified cargo buffer sorting device 43 based on the cargo type and quantity information of the order content, the conveying speed of the inner loop conveyor belt 42, and the movement direction and the order of the classified cargo buffer sorting devices 43 that the cargo box 5 needs to pass through, and controls each corresponding classified cargo buffer sorting device 43 to ship goods according to the task instructions until the goods sorting work of a single order content in a single cargo box 5 is completed. In this embodiment, by default, when a classified cargo buffer sorting device 43 sorts goods, only 1 piece of commodity is shipped. The ring structure design can ensure that the sorting equipment keeps running in real time. If an order requires multiple pieces of the same commodity, it will circle around the inner loop conveyor belt 42 for multiple times. Orders with a small number of single commodities can be completed in time and removed from the inner loop conveyor belt 42 at the nearest exit, while a new order is replenished and put on the line for sorting. That is, the effect of "completing and leaving immediately" after the order sorting is achieved, avoiding the efficiency problem that the completed sorted orders still need to wait for the uncompleted orders to be completed before they can be shipped in sequence. Furthermore, the sorting efficiency can be improved. With such a sorting method, the system knows where it is and when at all times, that is, the time and order of order shipping are known in advance, which facilitates the subsequent packaging and shipping links, and they are also orderly and well-organized;

[0036] Step S4: After the controller 7 calculates the position of the cargo box 5 after completing the order content, it issues a shipping task time instruction to the nearest shipping mechanism on the path of the cargo box 5. When the task time arrives, the shipping mechanism transports and transfers the cargo box 5, removing it from the inner loop conveyor belt 42 and transferring it to the shipping conveyor belt 61 to complete the shipping transportation.

[0037] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modification examples falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An automated sorting and sorting logistics system for various materials, comprising a material feeding conveying mechanism (2), a cargo identification mechanism (3), a sorting device (4), a cargo container (5), an inlet and outlet conveying mechanism (6), and a controller (7), characterized in that: The sorting device (4) comprises: an outer ring conveyor belt (41) and an inner ring conveyor belt (42) arranged in an inner and outer double ring configuration; a feeding conveying mechanism (2) is connected to the outer ring conveyor belt (41) for feeding; a cargo identification mechanism (3) connected to a controller (7) is provided at a feeding position of the outer ring conveyor belt (41); the outer ring conveyor belt (41) and the inner ring conveyor belt (42) are connected via a plurality of cargo caching and sorting devices (43); a cargo box (5) can move on the inner ring conveyor belt (42) and enter and exit from the cargo inlet and outlet conveying mechanism (6); The classified goods caching and sorting devices (43) are all connected to the controller (7) and are used for feeding, storing and unloading materials corresponding to at least one material of the same kind, model or type. The sorting device (4) is distributed around the outer ring conveyor belt (41) and the inner ring conveyor belt (42), with the feeding port connected to the outer ring conveyor belt (41) and the discharging port connected to the inner ring conveyor belt (42); A box feeding mechanism is connected to the inner loop conveyor belt (42) and can, under the control of a signal from a controller (7), introduce an empty cargo box (5) therefrom into the inner loop conveyor belt (42); A delivery mechanism, connected to the inner loop conveyor belt (42), capable of picking up and delivering the cargo box (5) from the inner loop conveyor belt (42) under the control of a signal from a controller (7); in: The controller (7) is used to obtain the type of each piece of cargo entering the outer ring conveyor belt (41) and specify the classified cargo caching and sorting device (43) corresponding to the type, and calculate the time information of the single piece of cargo moving from the outer ring conveyor belt (41) to the corresponding classified cargo caching and sorting device (43), and can control the corresponding classified cargo caching and sorting device (43) to pick up the single piece of cargo at the accurate time point; The controller (7) is also used to control a single cargo box (5) entering the inner loop conveyor belt (42) to match an order information, and based on the order information, the corresponding types of goods in the information are assigned to the classified goods cache sorting device (43) for corresponding drop-off tasks, and according to the time and position information of the single cargo box (5) entering the inner loop conveyor belt (42), the time of all matched classified goods cache sorting devices (43) that the single cargo box (5) needs to pass through to complete the order information is calculated, and the corresponding classified goods cache sorting device (43) can be controlled to drop the type of goods into the cargo box (5) at an accurate time point, and the position and time information of the shipping mechanism that the single cargo box (5) passes through for the first time after completing the order is calculated, and the single cargo box (5) is transferred from the inner loop conveyor belt (42) to the shipping mechanism at the corresponding time to complete the shipment.

2. The automated tallying and sorting logistics system according to claim 1 is characterized in that: The feed conveying mechanism (2) is a cargo stretching machine, which is used to separate the cargo front and back so that only a single piece of cargo is discharged and falls onto the outer ring conveyor belt (41); The cargo identification mechanism (3) is a machine vision device for identifying the type of cargo that falls on the outer ring conveyor belt (41) and recording the time information when the cargo is identified and the location information on the outer ring conveyor belt (41) at which the cargo is located, and sending the information to the controller (7).

3. The automated tallying and sorting logistics system according to claim 1 is characterized in that: The classified goods caching and sorting device (43) comprises a feeding telescopic push rod (431), a goods caching and sorting device body (432), and a discharge conveyor belt (433), wherein: the feeding telescopic push rod (431) is installed outside the outer ring conveyor belt (41), and can be extended to push the goods on the outer ring conveyor belt into the goods caching and sorting device body (432); the discharge conveyor belt (433) is located at the bottom of the goods caching and sorting device body (432), and its end is connected to the upper part of the inner ring conveyor belt (42), and can discharge the goods in the goods caching and sorting device body (432) into the cargo box (5) on the inner ring conveyor belt (42).

4. The automated tallying and sorting logistics system according to claim 3 is characterized in that: The cargo caching and sorting device body (432) is provided with several layers of storage conveyor belts (434) running in opposite directions. The cargo falls onto each layer of storage conveyor belt (434) in a snake-like shape and is finally unloaded from the bottom layer of storage conveyor belt (434) to the inner loop conveyor belt (42).

5. The automated tallying and sorting logistics system according to claim 1 is characterized in that: The box feeding mechanism and the shipping mechanism are composed of two conveyor belts with opposite transport directions. The shipping mechanism is a shipping conveyor belt (61), and the box feeding mechanism is a shipping conveyor belt (62) for empty cargo boxes (5) to enter. The cargo boxes (5) enter the shipping conveyor belt (61) from the inner ring conveyor belt (42) through the flap device to complete the shipment. The outlet of the inlet conveyor belt (62) is connected to the inner loop conveyor belt (42) and is used to replenish the inner loop conveyor belt (42) with empty cargo boxes (5).

6. The automated tallying and sorting logistics system according to claim 5, characterized in that: An RFID reader / writer (64) connected to a controller (7) is provided at the end of the delivery conveyor belt (61) close to the inner loop conveyor belt (42), and a corresponding RFID card is provided on the cargo box (5). The RFID reader / writer (64) is used to determine the time and position information of the cargo box (5) exiting from the inner loop conveyor belt (42).

7. The automated tallying and sorting logistics system according to claim 5, characterized in that: The inner ring conveyor belt (42) is provided with a plurality of evenly distributed flipping devices (8). The cargo box (5) is loaded in the flipping device (8) and moves along with the inner ring conveyor belt (42). The flipping device (8) can flip outward to cause the cargo box (5) to slide sideways out of the flipping device (8) and into the delivery conveyor belt (61).

8. An automated tallying and sorting method for multiple materials based on the automated tallying and sorting logistics system according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Goods enter the outer ring conveyor belt (41) one by one, are identified and their relative positions and initial times of entry are recorded; S2. According to the type, relative position and initial time of a single commodity, the specific classified goods caching and sorting device (43) to which the commodity is to be classified is determined, and the commodity is temporarily stored in the classified goods caching and sorting device (43) of the commodity type. Several classified goods caching and sorting devices (43) are distributed on the outer ring conveyor belt (41); S3, according to the order content, the cargo boxes (5) on the inner ring conveyor belt (42) are sequentially passed through the corresponding several classified cargo buffering and sorting devices (43) for unloading and sorting until the order content is completed; S4. After the cargo box (5) on the inner ring conveyor belt (42) is loaded with the cargo of the order content, it leaves the inner ring conveyor belt (42) from the entrance of the next shipping mechanism on its moving path and enters the shipping mechanism to complete the shipment.

9. The automated tallying and sorting method according to claim 8, characterized in that: Each step also includes: S1. A batch of chaotic materials are sorted into individual pieces by the feeding conveyor mechanism (2) and sequentially fed into the outer ring conveyor belt (41). The type information of each piece of material fed into the outer ring conveyor belt (41) is identified by machine vision, and the time point information of the entry of each piece of material is recorded simultaneously. The type information and time point information are sent to the controller (7); S2, after receiving the type information and time point information of each single piece of cargo, the controller (7) finds the classified cargo caching and sorting device (43) corresponding to the type on the outer ring conveyor belt (41) according to the type information, and calculates the time information when the single piece of cargo arrives at the area of the classified cargo caching and sorting device (43) based on the distance information and the conveying speed. When the time information is reached, the classified cargo caching and sorting device (43) is controlled to physically move the single piece of cargo into the cargo caching and sorting device body (432), completing the classification and sorting processing of all cargo entering the outer ring conveyor belt (41), forming a plurality of classified cargo caching and sorting devices (43) storing single types of cargo, which are evenly distributed in an annular manner on the outer ring conveyor belt (41); S3, the controller (7) arranges sorting work based on each order according to the received order task, identifies the empty cargo box (5) entering the inner ring conveyor belt (42) and records its position and time information when entering, so as to match it with the order task, calculates the task instruction of each corresponding classified cargo cache sorting device (43) based on the type and quantity information of the goods in the order content, the conveying speed of the inner ring conveyor belt (42), the movement direction of the cargo box (5) and the sequence of the classified cargo cache sorting devices (43) that it needs to pass through, and controls each corresponding classified cargo cache sorting device (43) to ship according to the task instruction until a single cargo box (5) completes the sorting work of the goods in the single order content; S4. After calculating the position of a single cargo box (5) after completing the order content, the controller (7) issues a shipping task time instruction to the nearest shipping mechanism on the path of the cargo box (5). When the task time arrives, the shipping mechanism transfers the cargo box (5) for shipping and transportation, removes it from the inner ring conveyor belt (42) and transfers it to the shipping conveyor belt (61) to complete the shipping and transportation.

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