A multi-material sorting method for a long logistics conveyor line

Abstract

The present invention provides a multi-material sorting system and sorting method for a long logistics conveyor line, including materials, and further including a long conveyor line, an exclusion line, a marking device, a sorting device, a number of sorting lines, a warehouse management system, and a PLC. Exclusion nodes, a number of sorting nodes, and an exit node are respectively arranged on the long conveyor line along the conveying direction. The marking device marks each material. The sorting device guides the materials on the long conveyor line to the exclusion line or the sorting lines. The warehouse management system allocates target addresses to the sorting lines. The warehouse management system allocates target addresses to the exclusion line for materials with marking failures. The PLC determines whether the materials reach the target addresses and controls the sorting device to perform sorting; an additional exclusion line is arranged at the head end of the long conveyor line, and a material recovery line is added at the end, which can efficiently and accurately convey the unmarked materials to the exclusion line and directly convey the materials that do not enter the sorting lines during the sorting process to the material recovery line, improving the utilization rate of each sorting line and the accuracy of material warehousing.

Description

Technical Field

[0001] The present invention relates to the technical field of material sorting, and particularly to a multi-material sorting method for a long logistics conveyor line. Background Art

[0002] To achieve high-speed sorting in large quantities and multiple batches, enterprises often configure more than a dozen sorting ports on a whole long main conveyor line, and cooperate with conveying equipment, picking robots, visual recognition, sorting machines, etc. to achieve fully automated high-speed sorting. However, the following problems will occur:

[0003] (1) High-speed sorting often uses sorting rules such as weight and color for sorting, which can achieve fast sorting to each lane; but for different models of electronic products of the same type, it is necessary to accurately identify the material barcode or two-dimensional code through visual recognition, and the material conveying speed is greatly affected by visual reading.

[0004] (2) During the process of conveying materials on a whole long main conveyor line, the material barcode or two-dimensional code is identified by a barcode reader, and the information identified by the barcode reader is transmitted to the upper computer, and the upper computer assigns a target address to the material; when the barcode reader fails to identify the material information, the abnormal material will be sorted together with other materials, resulting in abnormalities and sorting errors. If data anomalies, sorting anomalies, etc. occur, it is necessary to stop the material sorting line, manually remove the abnormal logistics from the material sorting line, and clear the abnormal material information from the upper computer database, and then resume normal operation. This operation will inevitably lead to the speed and efficiency of logistics sorting; if segmented logistics is adopted, the cost of logistics equipment needs to be increased.

[0005] (3) The outbound beat of the product is fast, reaching 2S per piece. During the transportation process of materials on a whole long main conveyor line, it is easy for short and multiple materials to accumulate at the same position in a short time, resulting in data anomalies and incorrect material address allocation.

[0006] (4) Existing pipeline sorting devices mostly adopt electric or pneumatic swing rod sorting devices and swing roller sorting devices. However, the disadvantage of the electric or pneumatic swing rod sorting device is that a large swing arm angle will affect the subsequent material conveying and sorting beat, which is not conducive to high-speed material transmission; in addition, for the swing roller sorting device, its structure is complex and it is difficult to replace and repair. Summary of the Invention

[0007] In view of this, the present invention proposes a multi-material sorting method for a long logistics conveyor line that can perform efficient rejection, prevent material backlog, and does not require shutting down the conveyor line.

[0008] The technical solution of the present invention is implemented as follows: The present invention provides a multi-material sorting method for a long logistics conveyor line, including materials, and also including a long conveyor line, a rejection line, a marking device, a sorting device, a number of sorting lines, a warehouse management system, and a PLC; rejection nodes, a number of sorting nodes, and an exit node are respectively arranged on the long conveyor line along the conveying direction, and the exit node is used to recycle unsorted materials, and the long conveyor line is used to convey materials; the rejection line and the long conveyor line intersect at the rejection node; a number of sorting lines respectively intersect with the long conveyor line at each sorting node; the marking device is fixedly installed on the upper surface of the long conveyor line, the marking device is located at one end of the rejection node and away from the sorting node, and the marking device marks each material; the sorting device is fixedly installed directly above the rejection node or each sorting node, and the sorting device guides the materials on the long conveyor line to the rejection line or the sorting line; the warehouse management system is electrically connected to the PLC and the marking device, the warehouse management system records the data of the successfully marked materials and assigns a target address to the sorting line, and the warehouse management system assigns a target address to the rejection line for the materials with failed marking; the PLC electrically controls the sorting device, and the PLC determines whether the material reaches the target address and controls the sorting device to perform sorting.

[0009] On the other hand, a multi-material sorting method for a long logistics conveyor line is also provided, including the following steps,

[0010] S1 The materials on the long conveyor line are marked by a marking device located in front of the rejection node. The warehouse management system records the marking data of the successfully marked materials and assigns the target address to the corresponding sorting line. The warehouse management system assigns the target address to the rejection line for the materials that are not successfully marked. At the same time, the warehouse management system transmits the target address of the materials to the PLC for storage;

[0011] S2 When the materials that are not successfully marked reach the rejection node, the PLC controls the sorting device to guide the materials into the rejection line;

[0012] S3 When the successfully marked materials reach the sorting node of the sorting line corresponding to the target address, the PLC controls the sorting device to guide the materials into the sorting line;

[0013] S4 After all the materials pass through the marking device and do not enter the rejection line and the sorting line, they are uniformly conveyed by the long conveyor line to the exit node for recycling.

[0014] On the basis of the above technical solutions, preferably, in step S1, each material is placed in a tray for conveying one by one. The marking device includes a top code reader and a side code reader. The top code reader marks the material, and the side code reader marks the tray. The warehouse management system pairs and records the two marking data of the same material and assigns a target address to the material.

[0015] On the basis of the above technical solutions, preferably, in steps S2 and S3, an entrance sensor is fixedly arranged at the front end of each rejection node and each sorting node. When the material passes through the entrance sensor, the entrance sensor transmits a detection signal to the PLC. The PLC compares and matches the target address assigned to the material with the target address where the rejection line or sorting line is located. When the two match successfully, the PLC controls the sorting device to guide the material into the rejection line or sorting line; when the two do not match, the material continues to move forward to the next sorting node.

[0016] More preferably, an exit sensor is fixedly arranged at the rear end of each rejection node and each sorting node. Along the conveying direction on the long conveying line, there are several data stations A1, A2, A3... An. Each data station includes an adjacent entrance sensor and an exit sensor. The PLC pre-assigns the target address data of the material to each data station and stores the data in the PLC. When the material passes through each data station along the conveying direction of the long conveying line, the data of the target address assigned to the material by the warehouse management system also moves synchronously and is paired with the assigned data of the data station.

[0017] More preferably, when the target address data of the material moves from data station An to data station An + 1 along with the conveying of the material, the PLC clears the assigned data of data station An.

[0018] More preferably, when the target address data of two adjacent materials in the front and back are input into the same data station An at the same time, the PLC clears the assigned data of the two materials in data stations An to An + 1 or data stations An to An + 2.

[0019] More preferably, shunt sensors are fixedly arranged at the entrance ends of the rejection line and the sorting line respectively. After the PLC receives the signal that the material passes through the shunt sensor, the PLC clears the assigned data of the material in each data station.

[0020] On the basis of the above technical solutions, preferably, in steps S2 and S3, the sorting device includes a frame, a bracket, a lifting cylinder and a rotary mechanism. The frame is fixedly installed directly above the rejection node or the sorting node. The bracket is fixedly installed on the top of the frame. The lifting cylinder is fixedly installed on the bracket and has a movable end. The rotary mechanism is fixedly connected to the movable end of the lifting cylinder. The rotary mechanism rotates clockwise or counterclockwise with the vertical line as the axis. When the rotary mechanism descends with the movable end of the lifting cylinder and approaches the upper surface of the long conveying line, the rotary mechanism guides the material from the long conveying line to the rejection line or the sorting line.

[0021] Further preferably, after the PLC successfully compares and matches the target address to which the material is allocated with the target address where the rejection line or sorting line is located, the PLC sends a descending instruction to the lifting cylinder, and the lifting cylinder drives the rotating mechanism to descend, and the rotating mechanism approaches the upper surface of the long conveyor line; the PLC sends a start instruction to the rotating mechanism, and the rotating mechanism rotates and guides the material at the rejection node or sorting node to the rejection line or sorting line; when the material enters the rejection line or sorting line, the PLC sequentially sends a stop instruction to the rotating mechanism and a rising instruction to the lifting cylinder, and the rotating mechanism stops rotating and rises and resets with the lifting cylinder.

[0022] The multi-material sorting method for a long logistics conveyor line of the present invention has the following beneficial effects compared with the prior art:

[0023] (1) An exclusion line is added at the head end of the long conveyor line, and a material recovery line is added at the end, which can efficiently and accurately convey the unmarked materials to the exclusion line, directly convey the materials that do not enter the sorting line during the sorting process to the material recovery line, and there is no need to shut down the long conveyor line during the exclusion process, improving the utilization rate of each sorting line and the accuracy of material warehousing.

[0024] (2) Continuous data stations are arranged along the long conveyor line. When the material passes through the previous data station, the material data of the previous data station is deleted, which can improve the efficiency of the PLC reading data. At the same time, when material accumulation occurs in a single data station, the PLC clears the data of the continuous up to three data stations starting from this data station, so that the accumulated materials are directly conveyed to the material recovery line at the end of the main conveyor line to ensure the correct sorting operation of the subsequent incoming materials, and there is no need to shut down the long conveyor line.

[0025] (3) A rotatable mechanism that can be lifted is used as the sorting device at each node, changing the operation direction of the sorting device from horizontal movement to vertical movement, reducing the abnormal material jamming phenomenon caused by mechanical reasons, and at the same time making it more convenient for equipment maintenance. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 Is a three-dimensional view of the sorting method of the present invention;

[0028] Figure 2 Is a three-dimensional view of the sorting device of the present invention.

[0029] In the figure: 1. Long conveyor line; 11. Exclusion node; 12. Sorting node; 13. Exit node; 2. Exclusion line; 3. Marking device; 31. Top code reader; 32. Side code reader; 4. Entrance sensor; 5. Exit sensor; 6. Shunt sensor; 7. Sorting device; 71. Frame; 72. Bracket; 73. Lifting mechanism; 74. Rotary mechanism; 8. Sorting line; 9. Material; 10. Tray. Detailed implementation mode

[0030] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] As Figure 1 shown, a multi-material sorting method for a long logistics conveyor line of the present invention includes a material 9, and also includes a long conveyor line 1, an exclusion line 2, a marking device 3, an entrance sensor 4, an exit sensor 5, a shunt sensor 6, a sorting device 7, a sorting line 8, a tray 10, a warehouse management system and a PLC.

[0032] Among them, an exclusion node 11, a plurality of sorting nodes 12 and an exit node 13 are respectively arranged on the long conveyor line 1 along the conveying direction. The exit node 13 is used to recycle the unsorted material 9, and the long conveyor line 1 is used to convey the material 9. In practical applications, a conveyor line and a sorting device 7 are usually added at the exit node 13 as a material recovery line; among them, the material recovery line generally adopts a gravity conveyor line or a belt-powered conveyor line.

[0033] The exclusion line 2 and the long conveyor line 1 intersect at the exclusion node 11.

[0034] It should be noted that an exclusion line 2 is arranged at the head end of the long conveyor line 1, so that abnormal materials 9 are directly discharged at the entrance of the long conveyor line 1, improving the sorting accuracy and without shutting down the long conveyor line 1. In practical applications, the exclusion line 2 usually adopts a fluid strip conveyor line.

[0035] A plurality of sorting lines 8 respectively intersect with the long conveyor line 1 at each sorting node 12.

[0036] The marking device 3 is fixedly installed on the upper surface of the long conveyor line 1. The marking device 3 is located at one end of the exclusion node 11 and away from the sorting node 12, and the marking device 3 marks each material 9.

[0037] The sorting device 7 is fixedly installed directly above the rejection node 11 or each sorting node 12. The sorting device 7 guides the material 9 on the long conveyor line 1 to the rejection line 2 or the sorting line 8.

[0038] The warehouse management system is electrically connected to the PLC and the marking device 3. The warehouse management system records the data of the successfully marked material 9 and assigns the target address to the sorting line 8. The warehouse management system assigns the target address of the material 9 with marking failure to the rejection line 2.

[0039] The PLC electrically controls the sorting device 7. The PLC judges whether the material 9 reaches the target address and controls the sorting device 7 to perform sorting.

[0040] The entrance sensor 4 is fixedly arranged at the front end of the rejection node 11 and each sorting node 12. When the material 9 passes through the entrance sensor 4, the entrance sensor 4 transmits the detection signal to the PLC. The PLC compares and matches the target address assigned to the material 9 with the target address where the rejection line 2 or the sorting line 8 is located. When the two match successfully, the PLC controls the sorting device 7 to guide the material 9 into the rejection line 2 or the sorting line 8; when the two do not match, the material 9 continues to move forward to the next sorting node 12.

[0041] The exit sensor 5 is fixedly arranged at the rear end of the rejection node 11 and each sorting node 12, and is used to cooperate with the entrance sensor 4 to form a data station.

[0042] The shunt sensor 6 is fixedly arranged at the entrance ends of the rejection line 2 and the sorting line 8 to detect whether the material 9 enters the rejection line 2 and the sorting line 8.

[0043] Among them, the entrance sensor 4, the exit sensor 5 and the shunt sensor 6 generally adopt photoelectric sensors.

[0044] On the other hand, the present invention realizes a multi-material sorting method for a long logistics conveyor line by applying the above sorting method, including the following steps.

[0045] S1 Each material 9 is placed in a tray 10 one by one for transportation. The material 9 on the long conveyor line 1 is marked by the marking device 3 located in front of the rejection node 11. The warehouse management system records the marking data of the successfully marked material 9 and assigns the target address to the corresponding sorting line 8. The warehouse management system assigns the target address of the material 9 that is not successfully marked to the rejection line 2. At the same time, the warehouse management system transmits the target address of the material 9 to the PLC for storage. Placing the material 9 in the tray 10 for transportation can realize double marking of the material 9 by the warehouse management system and improve the accuracy of the sorting method.

[0046] The marking device 3 includes a top code reader 31 and a side code reader 32. The top code reader 31 marks the material 9, and the side code reader 32 marks the pallet 10. The warehouse management system pairs and records the two marking data of the same material 9, and assigns a target address to the material 9. The top code reader 31 and the side code reader 32 use identification barcodes or two-dimensional codes for marking.

[0047] When the material 9 that has not been successfully marked in S2 advances to the rejection node 11, the PLC controls the sorting device 7 to guide the material 9 into the rejection line 2, thereby directly discharging the abnormal material 9 at the entrance of the long conveyor line 1, thereby improving the sorting accuracy and eliminating the need to shut down the long conveyor line 1.

[0048] When the successfully marked material 9 in S3 advances to the sorting node 12 of the sorting line 8 corresponding to the target address, the PLC controls the sorting device 7 to guide the material 9 into the sorting line 8.

[0049] S4 All materials 9 that have passed through the marking device 3 but have not entered the rejection line 2 and the sorting line 8 are uniformly transported to the exit node 13 through the long conveyor line 1 for recycling. Since materials 9 may be piled up or the PLC may fail to accurately identify the target address of materials 9 when passing through various data stations, these materials 9 that have not been sorted due to abnormal circumstances can be uniformly transported to the exit node 13 through the long conveyor line 1 for recycling, which not only improves efficiency, but also ensures the correct sorting of subsequent incoming materials without shutting down the long conveyor line 1.

[0050] The steps of the above-mentioned sorting method are the basic procedures for completing the entire sorting operation. However, in actual use, a backlog of materials 9 may sometimes occur.

[0051] Therefore, in order to solve the problem that the long conveyor line 1 needs to be shut down due to the backlog of materials 9, the present invention is provided with a plurality of data stations A1, A2, A3...An along the conveying direction of the long conveyor line 1, each data station includes an adjacent entrance sensor 4 and an exit sensor 5, and the PLC assigns the target address data of the material 9 to each data station in advance and stores the data in the PLC. When the material 9 passes through a data station along the conveying direction of the long conveyor line 1, the data of the target address assigned by the warehouse management system to the material 9 is also moved synchronously and paired with the assigned data of the data station.

[0052] Under normal transportation conditions, when each material 9 continues to move forward on the long conveyor line 1 and passes through each data station in turn, when the target address data of material 9 moves from data station An to data station An+1 as material 9 is transported, the PLC clears the assigned data of data station An to increase the PLC reading speed.

[0053] Under normal sorting conditions, when each material 9 enters the corresponding sorting node 12, after the PLC receives the signal that the material 9 passes through the shunt sensor 6, the PLC clears the assigned data of the material 9 in each data station to reduce the storage capacity of the PLC and improve the PLC reading speed.

[0054] When the material 9 is backlogged, and it is inevitable that two adjacent materials 9 enter the same rejection node 11 or sorting node 12 at the same time, that is, when the target address data of two adjacent materials 9 are input into the same data station An at the same time, at this time the PLC will simultaneously clear the assigned data of the two materials 9 in the data stations from An to An+1 or from An to An+2, that is, the PLC clears two or three consecutive data stations starting from the current data station An where these two materials 9 are located. For safety reasons, generally three are cleared, so that these two materials 9 cannot complete sorting and are directly recycled through the outlet node 13 along the long conveyor line 1. Through the above processing method, it will not affect the sorting and conveying of subsequent materials 9, nor is it necessary to shut down the long conveyor line 1 to process the backlogged materials 9.

[0055] It should be noted that in practical applications, since the length filling between the inlet sensor 4 and the outlet sensor 5 at both ends of the same rejection node 11 or sorting node 12 is set to the length of two pallets 10, therefore, in the case of backlogged materials 9, the number of data in the data stations cleared by the PLC is at least two; for safety reasons, it is set to three. Therefore, it can be seen that placing the material 9 in the pallet 10 for conveying is also convenient for the sorting method to accurately record and judge the data of the material 9.

[0056] Specifically, the present invention is also implemented through the following technical solutions.

[0057] As Figure 1 shown, in combination with Figure 2 , the sorting device 7 includes a frame 71, a bracket 72, a lifting mechanism 73 and a slewing mechanism 74.

[0058] Among them, the frame 71 is fixedly installed directly above the rejection node 11 or the sorting node 12.

[0059] The bracket 72 is fixedly installed on the top of the frame 71 and is used to install the lifting mechanism 73.

[0060] The lifting mechanism 73 has a fixed end and the fixed end is fixedly installed on the bracket 72. The lifting mechanism 73 has a movable end and the movable end moves up and down along the vertical line. Among them, the lifting mechanism 73 is a double-rod lifting cylinder.

[0061] The slewing mechanism 74 is fixedly connected to the movable end of the lifting mechanism 73. The slewing mechanism 74 rotates clockwise or counterclockwise with the vertical line as the axis. When the slewing mechanism 74 descends with the movable end of the lifting mechanism 73 and approaches the upper surface of the long conveyor line 1. Among them, the slewing mechanism 74 is a synchronous belt conveying device.

[0062] The slewing mechanism 74 is adopted to replace the common swing arm baffle method to guide the material 9, effectively avoiding the problem of material jamming and improving the efficiency of conveying and sorting.

[0063] When the PLC successfully compares and matches the target address assigned to the material 9 with the target address where the rejection line 2 or the sorting line 8 is located, the PLC sends a descending instruction to the lifting mechanism 73. The lifting mechanism 73 drives the slewing mechanism 74 to descend, and the slewing mechanism 74 approaches the upper surface of the long conveyor line 1; the PLC sends a start instruction to the slewing mechanism 74, and the slewing mechanism 74 rotates and guides the material 9 at the rejection node 11 or the sorting node 12 to the rejection line 2 or the sorting line 8; when the material 9 enters the rejection line 2 or the sorting line 8, the PLC sequentially sends a stop instruction to the slewing mechanism 74 and an ascending instruction to the lifting mechanism 73, and the slewing mechanism 74 stops rotating and rises and resets with the lifting mechanism 73.

[0064] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-material sorting method for a long logistics conveyor line, which uses a multi-material sorting system to sort materials (9), characterized in that: The multi-material sorting system includes a long conveyor line (1), an exclusion line (2), a marking device (3), a sorting device (7), a number of sorting lines (8), a warehouse management system, and a PLC; On the long conveyor line (1), an exclusion node (11), a number of sorting nodes (12), and an exit node (13) are respectively arranged along the conveying direction. The exit node (13) is used to recycle the unsorted materials (9). The long conveyor line (1) is used to convey the materials (9); The exclusion line (2) and the long conveyor line (1) intersect at the exclusion node (11); A number of the sorting lines (8) respectively intersect with the long conveyor line (1) at each sorting node (12); The marking device (3) is fixedly installed on the upper surface of the long conveyor line (1). The marking device (3) is located at one end of the exclusion node (11) and away from the sorting node (12). The marking device (3) marks each material (9); The sorting device (7) is fixedly installed directly above the exclusion node (11) or each sorting node (12). The sorting device (7) guides the materials (9) on the long conveyor line (1) to the exclusion line (2) or the sorting line (8); The warehouse management system is electrically connected to the PLC and the marking device (3). The warehouse management system records the data of the materials (9) successfully marked and assigns a target address to the sorting line (8). The warehouse management system assigns a target address to the exclusion line (2) for the materials (9) with failed marking; The PLC electrically controls the sorting device (7). The PLC judges whether the material (9) reaches the target address and controls the sorting device (7) to perform sorting; The multi-material sorting method includes the following steps. S1 The materials (9) on the long conveyor line (1) are marked by the marking device (3) located in front of the exclusion node (11). The warehouse management system records the marking data of the successfully marked materials (9) and assigns the target address as the corresponding sorting line (8). The warehouse management system assigns the target address as the exclusion line (2) for the materials (9) with failed marking. At the same time, the warehouse management system transmits the target address of the materials (9) to the PLC for storage; S2 When the unsuccessfully marked materials (9) advance to the exclusion node (11), the PLC controls the sorting device (7) to guide the materials (9) into the exclusion line (2). Entrance sensors (4) are fixedly arranged at the front ends of the exclusion node (11) and each sorting node (12). When the material (9) passes through the entrance sensor (4), the entrance sensor (4) transmits a detection signal to the PLC. The PLC compares and matches the target address assigned to the material (9) with the target address where the exclusion line (2) or the sorting line (8) is located. When the two match successfully, the PLC controls the sorting device (7) to guide the material (9) into the exclusion line (2) or the sorting line (8). When the two do not match, the material (9) continues to advance to the next sorting node (12); An outlet sensor (5) is fixedly arranged at the rear end of each rejection node (11) and each sorting node (12). A number of data stations A1, A2, A3... An are arranged on the long conveyor line (1) along the conveying direction. Each data station includes an adjacent inlet sensor (4) and an outlet sensor (5). The PLC pre-assigns the target address data of the material (9) to each data station and stores the data in the PLC. When the material (9) passes through a data station along the conveying direction of the long conveyor line (1), the data of the target address assigned to the material (9) by the warehouse management system also moves synchronously and is paired with the assigned data of the data station. When the target address data of two adjacent materials (9) are input into the same data station An at the same time, the PLC simultaneously clears the assigned data of the two materials (9) in the data stations from An to An+1 or from An to An+2. When the successfully marked material (9) advances to the sorting node (12) of the sorting line (8) corresponding to the target address, the PLC controls the sorting device (7) to guide the material (9) into the sorting line (8). S4 After all materials (9) pass through the marking device (3) and do not enter the rejection line (2) and the sorting line (8), they are uniformly conveyed to the outlet node (13) through the long conveyor line (1) for recycling.

2. The multi-material sorting method for a long logistics conveyor line according to claim 1, characterized in that: In the step S1, each material (9) is placed in a corresponding tray (10) for conveying. The marking device (3) includes a top barcode reader (31) and a side barcode reader (32). The top barcode reader (31) marks the material (9), and the side barcode reader (32) marks the tray (10). The warehouse management system pairs and records the two marking data of the same material (9) and assigns a target address to the material (9).

3. A multi-material sorting method for a long logistics conveyor line according to claim 1, characterized in that: When the target address data of the material (9) moves from the data station An to the data station An+1 along with the conveying of the material (9), the PLC clears the assigned data of the data station An.

4. A multi-material sorting method for a long logistics conveyor line according to claim 1, characterized in that: Shunting sensors (6) are fixedly arranged at the inlet ends of the rejection line (2) and the sorting line (8) respectively. After the PLC receives the signal that the material (9) passes through the shunting sensor (6), the PLC clears the assigned data of the material (9) in each data station.

5. A multi-material sorting method for a long logistics conveyor line according to claim 1, characterized in that: In the said step S2 and step S3, the sorting device (7) includes a frame (71), a support (72), a lifting mechanism (73) and a slewing mechanism (74). The frame (71) is fixedly installed directly above the rejection node (11) or the sorting node (12). The support (72) is fixedly installed on the top of the frame (71). The lifting mechanism (73) is fixedly installed on the support (72) and has a movable end. The slewing mechanism (74) is fixedly connected to the movable end of the lifting mechanism (73). The slewing mechanism (74) rotates clockwise or counterclockwise with the vertical line as the axis. When the slewing mechanism (74) descends with the movable end of the lifting mechanism (73) and approaches the upper surface of the long conveyor line (1), the slewing mechanism (74) guides the material (9) from the long conveyor line (1) to the rejection line (2) or the sorting line (8).

6. A multi-material sorting method for a long logistics conveyor line according to claim 5, characterized in that: After the PLC successfully compares and matches the target address assigned to the material (9) with the target address where the rejection line (2) or the sorting line (8) is located, the PLC sends a descending instruction to the lifting mechanism (73). The lifting mechanism (73) drives the slewing mechanism (74) to descend, and the slewing mechanism (74) approaches the upper surface of the long conveyor line (1); The PLC sends a start instruction to the slewing mechanism (74). The slewing mechanism (74) rotates and guides the material (9) at the rejection node (11) or the sorting node (12) to the rejection line (2) or the sorting line (8); After the material (9) enters the rejection line (2) or the sorting line (8), the PLC sequentially sends a stop instruction to the slewing mechanism (74) and a rising instruction to the lifting mechanism (73). The slewing mechanism (74) stops rotating and rises and resets with the lifting mechanism (73).

Images