Intelligent logistics sorting system based on PLC control

Abstract

An intelligent logistics sorting system based on PLC control comprises a main conveying line, a control system and detection mechanisms, a guide-in table and a plurality of sub-conveying systems are arranged along the main conveying line, and the number of the detection mechanisms corresponds to that of the sub-conveying systems. Express parcels needing to be sorted are guided into the main conveying line through the guide-in table and guided out of the sub-conveying system. Each sub-conveying system comprises a first-stage conveying mechanism, a second-stage conveying mechanism and a plurality of third-stage conveying mechanisms, each conveying mechanism correspondingly comprises a first-stage conveying line, a second-stage conveying line and a third-stage conveying line, and each conveying line is of a belt type conveying structure. The first-stage conveying mechanism is used for receiving the express parcels conveyed from the main conveying line, and each third-stage conveying mechanism correspondingly conveys the express parcels of one specification. Compared with the prior art, the control system is used in cooperation with the detection mechanism and the sub-conveying system, the express packages can be classified and sent out according to the specifications of the express packages, automatic sorting of the express packages is achieved, manual intervention can be reduced, and the sorting efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of logistics sorting, and particularly relates to an intelligent logistics sorting system based on PLC control. Background Art

[0002] Logistics sorting is a key link to achieve the efficient operation of logistics distribution. With the rapid development of the logistics industry, its importance has become increasingly prominent. In the modern logistics system, a variety of sorting technologies are used, such as manual sorting, semi-automatic sorting, and automatic sorting. Automatic sorting technology, with its advantages of high efficiency and accuracy, has gradually become the mainstream development trend. It uses advanced equipment and intelligent control systems to quickly identify and sort express deliveries.

[0003] However, in actual applications, the existing automatic logistics sorting equipment is mainly used for sorting box-shaped express deliveries with similar sizes and regular shapes. These devices can efficiently process standardized box-shaped express deliveries according to the preset size range and conveying path, and are suitable for sorting scenarios of large-scale and single-type express deliveries. However, when it comes to the last sorting of express deliveries before the final distribution, the situation is much more complex. At this stage, there are various types of express deliveries, including regular boxed ones and soft bagged ones, and there are significant volume differences, ranging from small items the size of a palm to oversized goods. The existing automatic sorting equipment is difficult to adapt to such complex express delivery types and size changes. Therefore, most logistics enterprises still rely on manual sorting in this link. Although manual sorting has advantages in flexibility, it has problems such as high labor intensity, low efficiency, and easy errors, and it is difficult to meet the requirements of fast and accurate sorting in modern logistics, becoming a bottleneck restricting the improvement of logistics distribution efficiency. Summary of the Invention

[0004] To solve the above technical problems, the invention is solved through the following technical solutions.

[0005] An intelligent logistics sorting system based on PLC control includes a main conveyor line, a control system, and a detection mechanism. An introduction table and several sub-conveyor systems are arranged along the main conveyor line, and the number of detection mechanisms corresponds to that of the sub-conveyor systems. The express deliveries to be sorted are introduced into the main conveyor line via the introduction table and exported from the sub-conveyor systems. The sub-conveyor system includes a primary conveyor mechanism, a secondary conveyor mechanism, and several tertiary conveyor mechanisms. The primary conveyor mechanism, the secondary conveyor mechanism, and the tertiary conveyor mechanisms correspondingly include a primary conveyor line, a secondary conveyor line, and a tertiary conveyor line. The primary conveyor line, the secondary conveyor line, and the tertiary conveyor line are all belt conveyor structures. The primary conveyor mechanism is used to receive the express deliveries sent from the main conveyor line, and each group of tertiary conveyor mechanisms corresponds to conveying one specification of express delivery.

[0006] When performing express delivery, the detection mechanism detects the specifications of the express. After the express is transported to the secondary conveyor mechanism via the main conveyor line and the primary conveyor mechanism, the control system controls the secondary conveyor mechanism to dock with the tertiary conveyor mechanism corresponding to the express specifications according to the express specification information.

[0007] Further, the secondary conveyor mechanism includes a base with a slide rail, a bottom plate is assembled on the slide rail, a secondary conveyor frame and a second selection unit for driving the base to move along the slide rail are assembled on the bottom plate, a secondary conveyor line for transporting the express is assembled on the secondary conveyor frame, and several tertiary conveyor mechanisms are distributed along the sliding direction of the slide rail.

[0008] Further, the number of tertiary conveyor mechanisms is n groups, and the number of secondary conveyor frames is m groups, where n = 2m + 1, and m is a positive integer. The m groups of secondary conveyor frames are distributed along the sliding direction of the slide rail, and the distance between the secondary conveyor frames corresponds to the distance between the tertiary conveyor mechanisms.

[0009] Further, the number of tertiary conveyor mechanisms is three groups, and the number of secondary conveyor frames is two groups.

[0010] Further, the tertiary conveyor mechanism includes a tertiary conveyor frame and at least two groups of tertiary conveyor lines, and the tertiary conveyor lines are assembled on the tertiary conveyor frame in a vertically distributed manner; each group of secondary conveyor frames is assembled with secondary conveyor lines corresponding to the tertiary conveyor lines in terms of quantity and layout.

[0011] Further, the primary conveyor mechanism includes a primary conveyor frame, a mounting seat is assembled on the primary conveyor frame, and a primary conveyor line is assembled on the mounting seat; one side of the mounting seat close to the main conveyor line is hinged and assembled with the primary conveyor frame, and a first selection unit for driving the mounting seat to rotate is assembled on the mounting seat.

[0012] Further, the first selection unit is a linear actuator, one end of the linear actuator is hinged and assembled with the primary conveyor frame, and the other end is hinged and assembled with the bottom of the mounting seat.

[0013] Further, a steering conveyor mechanism is assembled at the position of the main conveyor line corresponding to the sub-conveyor system; the steering conveyor mechanism includes a steering conveyor frame, a steering unit and a steering conveyor line, the steering conveyor line is rotatably assembled on the steering conveyor frame through a steering seat, and the steering unit is used to drive the steering conveyor line to rotate.

[0014] Further, a transition roller is assembled on the steering seat, and the transition roller is located on both sides of the steering conveyor line. The conveying surface of the steering conveyor line is higher than the conveying surface of the transition roller, and the conveying surface of the transition roller is higher than the conveying surface of the main conveyor line.

[0015] Compared with the prior art, the present application has the following beneficial technical effects:

[0016] 1. By using a PLC control system in coordination with a detection mechanism and a sub-conveyor system, it is possible to classify and send out express deliveries according to their specifications, achieving the automation of express sorting, reducing manual intervention, and greatly improving the sorting efficiency. Moreover, each conveyor line adopts a belt structure, which has low cost, stable conveying, and high applicability. It can not only sort box-shaped express deliveries but also bag-shaped express deliveries and large-weight and large-volume express deliveries, avoiding the problems that a roller conveyor line is not suitable for bag-shaped express deliveries and a universal module conveyor line has high cost and is not suitable for large-weight express deliveries. In addition, the sub-conveyor system can classify and send out express deliveries according to their specifications, facilitating the loading of express deliveries onto vehicles.

[0017] 2. The secondary conveying mechanism is used to receive express deliveries from the primary conveying mechanism and send them to the corresponding tertiary conveying mechanism. The cooperation of multiple groups of secondary conveying racks and tertiary conveying racks enables another group of secondary conveying racks to receive the next express delivery sent from the primary conveying mechanism while one group of secondary conveying racks is sending an express delivery to the tertiary conveying mechanism. This design can avoid the problem of reduced conveying efficiency caused by the waiting of express deliveries on the primary conveying mechanism when the secondary conveying mechanism sends out express deliveries, ensuring the continuity of conveying and sorting.

[0018] 3. The tertiary conveying mechanism adopts an up-and-down multi-layer conveyor line design, which can achieve the sorting of more specification express deliveries in a limited space and improve the sorting efficiency per unit area.

[0019] 4. The first sorting unit adopts a linear actuator articulated scheme, with fast response speed, which is beneficial to ensuring the smoothness of the overall conveying.

[0020] 5. The steering conveying mechanism has a steerable steering conveyor line, and the height of the steering conveyor line is higher than that of the main conveyor line. Express deliveries can transition from the main conveyor line to the steering conveyor line along the uphill formed by the transition rollers. By rotating the steering conveyor line, the attitude of the express deliveries can be adjusted. This design enables the sorting system to sort not only regular carton express deliveries with dimensions smaller than the width of the main conveyor line but also long-strip express deliveries with lengths exceeding the width of the conveyor line, enhancing the scalability and adaptability of the sorting system. Description of the Drawings

[0021] Figure 1 It is a structural distribution diagram of the logistics sorting system.

[0022] Figure 2 It is a three-dimensional view of the steering conveying mechanism and the sub-conveyor system.

[0023] Figure 3 It is a three-dimensional view of the steering conveying mechanism.

[0024] Figure 4 It is a structural diagram of the steering conveying mechanism at the main conveyor line.

[0025] Figure 5 It is a three-dimensional view of the primary conveying mechanism.

[0026] Figure 6 It is a side view of the first-level conveying mechanism.

[0027] Figure 7 It is a perspective view of the second-level conveying mechanism.

[0028] Figure 8 It is a side view of the second-level conveying mechanism.

[0029] Figure 9 It is a perspective view of the third-level conveying mechanism.

[0030] The following is an explanation of the reference numerals: 100, main conveying line; 110, inlet table; 120, detection mechanism; 130, turning conveying mechanism; 131, turning conveying frame; 132, turning seat; 133, turning unit; 134, turning conveying line; 135, transition roller; 140, sub-conveying system; 200, first-level conveying mechanism; 210, first-level conveying frame; 220, mounting seat; 230, first-level conveying line; 240, first sorting unit; 300, second-level conveying mechanism; 310, base; 311, slide rail; 312, second sorting unit; 320, bottom plate; 330, second-level conveying frame; 340, second-level conveying line; 400, third-level conveying mechanism; 410, third-level conveying frame; 420, third-level conveying line. Detailed implementation manners

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0032] In the following implementation manners, the same or similar reference numerals represent the same or similar components or components with the same or similar functions from beginning to end. The implementation manners described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0033] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and therefore should not be construed as a limitation to the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present invention, unless otherwise clearly defined and limited, the terms: installation, connection, connection, etc. should be understood in a broad sense, and those of ordinary skill in the art can understand the specific meanings of the above terms in this practical application according to specific circumstances.

[0034] Refer to Figures 1 to 9, this application proposes an intelligent logistics sorting system based on PLC control.

[0035] Embodiment 1

[0036] An intelligent logistics sorting system based on PLC control includes a main conveyor line 100, a control system, and a detection mechanism 120. An introduction table 110 and several sub-conveyor systems 140 are arranged along the main conveyor line 100, and the number of detection mechanisms 120 corresponds to that of the sub-conveyor systems 140. The express packages to be sorted are introduced into the main conveyor line 100 via the introduction table 110 and exported from the sub-conveyor systems 140.

[0037] The sub-conveyor system 140 includes a primary conveyor mechanism 200, a secondary conveyor mechanism 300, and several tertiary conveyor mechanisms 400. The secondary conveyor mechanism 300 includes a base 310 with a slide rail 311. A bottom plate 320 is assembled on the slide rail 311. A secondary conveyor frame 330 and a second sorting unit 312 for driving the base 310 to move along the slide rail 311 are assembled on the bottom plate 320. A secondary conveyor line 340 for conveying express packages is assembled on the secondary conveyor frame 330, and several tertiary conveyor mechanisms 400 are distributed along the sliding direction of the slide rail 311. The primary conveyor mechanism 200 is used to receive the express packages sent from the main conveyor line 100; each group of tertiary conveyor mechanisms 400 corresponds to conveying express packages of one specification.

[0038] When conveying express packages, the express packages are introduced into the main conveyor line 100 via the introduction table 110. The detection mechanism 120 detects the specifications and shipping information of the express packages. According to the shipping information, the main conveyor line 100 sends the express packages into the corresponding sub-conveyor systems 140. After the express packages are conveyed to the secondary conveyor mechanism 300 via the main conveyor line 100 and the primary conveyor mechanism 200, the control system controls the secondary conveyor mechanism 300 to connect to the tertiary conveyor mechanisms 400 corresponding to the specifications of the express packages according to the specification information of the express packages. This application uses the control system in cooperation with the detection mechanism 120 and the sub-conveyor system 140 to classify and send out the express packages according to their specifications, realizing the automation of express package sorting, reducing manual intervention, and greatly improving the sorting efficiency. In addition, the sub-conveyor system 140 can classify and send out the express packages according to their specifications, which is convenient for loading the express packages onto vehicles.

[0039] Embodiment 2

[0040] As an embodiment of the present application, the number of the three - level conveying mechanisms 400 is n groups, and the number of the second - level conveying frames 330 is m groups, where n = 2m + 1 and m is a positive integer. The m groups of second - level conveying frames 330 are distributed along the sliding direction of the slide rail 311, and the spacing between the second - level conveying frames 330 corresponds to the spacing between the three - level conveying mechanisms 400. The cooperation of multiple groups of second - level conveying frames 330 and the third - level conveying frames 410 enables that when one group of second - level conveying frames 330 is conveying express deliveries to the three - level conveying mechanisms 400, another group of second - level conveying frames 330 can receive the next express delivery sent from the first - level conveying mechanism 200. This design can avoid the problem that there are express deliveries waiting on the first - level conveying mechanism 200 when the second - level conveying mechanism 300 sends out express deliveries, resulting in a reduction in conveying efficiency, and ensures the continuity of conveying and sorting.

[0041] Preferably, the number of the three - level conveying mechanisms 400 is three groups, and the number of the second - level conveying frames 330 is two groups. The second - level conveying mechanism 300 is used to receive express deliveries from the first - level conveying mechanism 200 and send them to the corresponding three - level conveying mechanisms 400.

[0042] Embodiment 3

[0043] As an embodiment of the present application, the three - level conveying mechanism 400 includes a third - level conveying frame 410 and at least two groups of third - level conveying lines 420 (preferably two groups), and the third - level conveying lines 420 are assembled on the third - level conveying frame 410 in an up - and - down distribution. Each group of second - level conveying frames 330 is assembled with second - level conveying lines 340 corresponding to the third - level conveying lines 420 in terms of quantity and layout. The three - level conveying mechanism 400 adopts an up - and - down multi - layer conveying line design, which can realize the sorting of more specifications of express deliveries in a limited space and improve the sorting efficiency per unit area.

[0044] Correspondingly, the first - level conveying mechanism 200 includes a first - level conveying frame 210. An installation base 220 is assembled on the first - level conveying frame 210, and a first - level conveying line 230 is assembled on the installation base 220. One side of the installation base 220 close to the main conveying line 100 is hingedly assembled with the first - level conveying frame 210, and a first position - selecting unit 240 for driving the installation base 220 to rotate is assembled on the installation base 220. The first position - selecting unit 240 is a linear actuator. One end of the linear actuator is hingedly assembled with the first - level conveying frame 210, and the other end is hingedly assembled with the bottom of the installation base 220. The first position - selecting unit 240 adopts a linear actuator hinged scheme, with a fast response speed, which is beneficial to ensuring the smoothness of the overall conveying.

[0045] Embodiment 4

[0046] As an embodiment of the present application, the primary conveyor line 230, the secondary conveyor line 340, and the tertiary conveyor line 420 are all belt conveyor structures, including a conveyor belt, a conveyor motor, and a number of conveyor rollers. The conveyor belt is driven to rotate and tensioned by the conveyor rollers. A sprocket is provided at one end of the conveyor rollers, and the sprockets of all the conveyor rollers are connected by a chain belt. The conveyor motor drives one group of conveyor rollers. The belt structure has low cost, stable conveying, and high applicability. It can not only sort box-shaped express deliveries, but also sort bag-shaped express deliveries and large-weight and large-volume express deliveries, avoiding the problems that the drum conveyor line is not applicable to bag-shaped express deliveries, and the universal module conveyor line has high cost and is not applicable to large-weight express deliveries.

[0047] At the position where the main conveyor line 100 corresponds to the sub-conveyor system 140, a steering conveyor mechanism 130 is assembled. The steering conveyor mechanism 130 includes a steering conveyor frame 131, a steering unit 133, and a steering conveyor line 134. The steering conveyor line 134 has the same structure as the primary conveyor line 230, the secondary conveyor line 340, and the tertiary conveyor line 420, and is a belt conveyor structure. The steering conveyor line 134 is rotatably assembled on the steering conveyor frame 131 through a steering seat 132, and the steering unit 133 is used to drive the steering conveyor line 134 to rotate. A transition roller 135 is assembled on the steering seat 132, and the transition roller 135 is located on both sides of the steering conveyor line 134. The conveying surface of the steering conveyor line 134 is higher than the conveying surface of the transition roller 135, and the conveying surface of the transition roller 135 is higher than the conveying surface of the main conveyor line 100. The steering conveyor mechanism 130 has a steerable steering conveyor line 134, and the height of the steering conveyor line 134 is higher than that of the main conveyor line 100. Express deliveries can transition from the main conveyor line 100 to the steering conveyor line 134 along the uphill formed by the transition roller 135, and the steering conveyor line 134 steers to the primary conveyor mechanism 200 to convey the express deliveries onto the primary conveyor mechanism 200. This design can adjust the posture of the express deliveries, enabling the sorting system to sort not only regular carton express deliveries with dimensions smaller than the width of the main conveyor line 100, but also long-strip express deliveries with lengths exceeding the width of the conveyor line, improving the scalability and adaptability of the sorting system.

[0048] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention is subject to the claims. Any substitutions, deformations, and improvements that are easily conceivable by those skilled in the art for this technology fall within the protection scope of the present invention.

Claims

1. An intelligent logistics sorting system based on PLC control, comprising a main conveyor line (100), an import table (110) and a number of sub-conveyor systems (140) arranged along the main conveyor line (100). Express parcels to be sorted are imported into the main conveyor line (100) via the import table (110) and exported from the sub-conveyor systems (140). It is characterized in that, it further comprises a control system and a detection mechanism (120), and the number of the detection mechanisms (120) corresponds to that of the sub-conveyor systems (140); The sub-conveyor system (140) comprises a primary conveyor mechanism (200), a secondary conveyor mechanism (300) and a number of tertiary conveyor mechanisms (400). The primary conveyor mechanism (200), the secondary conveyor mechanism (300) and the tertiary conveyor mechanisms (400) correspondingly comprise a primary conveyor line (230), a secondary conveyor line (340) and a tertiary conveyor line (420). The primary conveyor line (230), the secondary conveyor line (340) and the tertiary conveyor line (420) are all belt conveyor structures. The primary conveyor mechanism (200) is used to receive the express parcels sent from the main conveyor line (100), and each group of tertiary conveyor mechanisms (400) conveys one specification of express parcels; When conveying the express parcels, the detection mechanism (120) detects the specifications of the express parcels. After the express parcels are conveyed to the secondary conveyor mechanism (300) via the main conveyor line (100) and the primary conveyor mechanism (200), the control system controls the secondary conveyor mechanism (300) to dock with the tertiary conveyor mechanism (400) corresponding to the express parcel specification according to the specification information of the express parcels.

2. An intelligent logistics sorting system based on PLC control according to claim 1, characterized in that, The secondary conveyor mechanism (300) comprises a base (310) with a slide rail (311), a bottom plate (320) is assembled on the slide rail (311), a secondary conveyor frame (330) and a second selection unit (312) for driving the base (310) to move along the slide rail (311) are assembled on the bottom plate (320). A secondary conveyor line (340) for conveying express parcels is assembled on the secondary conveyor frame (330). A number of tertiary conveyor mechanisms (400) are distributed along the sliding direction of the slide rail (311).

3. An intelligent logistics sorting system based on PLC control according to claim 2, characterized in that, The number of the tertiary conveyor mechanisms (400) is n groups, and the number of the secondary conveyor frames (330) is m groups, n = 2m + 1, where m is a positive integer; The m groups of secondary conveyor frames (330) are distributed along the sliding direction of the slide rail (311), and the distance between the secondary conveyor frames (330) corresponds to the distance between the tertiary conveyor mechanisms (400).

4. An intelligent logistics sorting system based on PLC control according to claim 3, characterized in that, The number of the tertiary conveyor mechanisms (400) is three groups, and the number of the secondary conveyor frames (330) is two groups.

5. An intelligent logistics sorting system based on PLC control according to claim 1, characterized in that, The tertiary conveyor mechanism (400) comprises a tertiary conveyor frame (410) and at least two groups of tertiary conveyor lines (420). The tertiary conveyor lines (420) are assembled on the tertiary conveyor frame (410) in an up-and-down distribution; a secondary conveyor line (340) corresponding to the tertiary conveyor lines (420) in terms of quantity and layout is assembled on each group of secondary conveyor frames (330).

6. The intelligent logistics sorting system based on PLC control according to claim 5, characterized in that, The first-stage conveying mechanism (200) includes a first-stage conveying frame (210). An installation base (220) is assembled on the first-stage conveying frame (210), and a first-stage conveying line (230) is assembled on the installation base (220). One side of the installation base (220) close to the main conveying line (100) is hingedly assembled with the first-stage conveying frame (210), and a first position-selection unit (240) for driving the installation base (220) to rotate is assembled on the installation base (220).

7. An intelligent logistics sorting system based on PLC control according to claim 6, characterized in that, The first position-selection unit (240) is a linear actuator. One end of the linear actuator is hingedly assembled with the first-stage conveying frame (210), and the other end is hingedly assembled with the bottom of the installation base (220).

8. An intelligent logistics sorting system based on PLC control according to claim 1, characterized in that A steering conveying mechanism (130) is assembled at the position of the main conveying line (100) corresponding to the sub-conveying system (140). The steering conveying mechanism (130) includes a steering conveying frame (131), a steering unit (133) and a steering conveying line (134). The steering conveying line (134) is rotatably assembled on the steering conveying frame (131) through a steering seat (132), and the steering unit (133) is used to drive the steering conveying line (134) to rotate.

9. The intelligent logistics sorting system based on PLC control according to claim 8, wherein, A transition roller (135) is assembled on the steering seat (132), and the transition roller (135) is located on both sides of the steering conveying line (134). The conveying surface of the steering conveying line (134) is higher than the conveying surface of the transition roller (135), and the conveying surface of the transition roller (135) is higher than the conveying surface of the main conveying line (100).

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