Logistics sorting device

Abstract

The invention relates to the technical field of logistics sorting equipment, in particular to a logistics sorting device. Comprising a first conveyor, a second conveyor and a third conveyor; wherein image recognition sensors are respectively arranged right above and in the side direction of the first conveyor and are used for detecting the volume of the logistics package; a shunt conveying roller is mounted on the lifting conveying seat; a pressure sensor is arranged at the bottom of the lifting adjusting mechanism so as to detect the weight of the logistics package. The pressure sensor is integrated on the shunt mechanism, and the image recognition sensor is arranged in front of the shunt mechanism, so that volume measurement, weight measurement and steering sorting of the same package are realized, the occupied area of equipment is reduced, and the sorting efficiency is improved. According to the logic that sorting is conducted according to the specific gravity of the parcels, the heavy goods and the light and bubble goods are automatically distributed to different rails, and a solid foundation is laid for follow-up transportation stowage optimization and cost fine accounting.

Description

Technical Field

[0001] This invention relates to the field of logistics sorting equipment technology, and more particularly to a logistics sorting device. Background Technology

[0002] With the rapid development of e-commerce, the volume and complexity of logistics sorting operations have increased dramatically. Traditional sorting devices mostly sort packages based solely on their destination information, neglecting the physical characteristics of the packages themselves—weight and volume. However, weight and volume information is crucial for subsequent transportation and loading, cost accounting, and equipment resource optimization.

[0003] Most sorting equipment only has barcode scanning and sorting functions, and cannot simultaneously obtain the weight and volume data of packages. This leads to the mixing of lightweight and bulky goods with heavy goods in subsequent transportation, making it difficult to achieve optimal loading. Traditional sorting lines are usually fixed on a single horizontal plane, which cannot adapt to the three-dimensional layout of multi-layer conveyor tracks, resulting in a waste of vertical space in the warehouse. Some equipment with weighing or volume measurement functions has its detection module separated from the sorting execution mechanism, occupying a long conveyor line and failing to achieve real-time, integrated sorting based on the detection results.

[0004] Therefore, there is an urgent need for a logistics device that can integrate volume detection, weight detection, and liftable transfer rail functions to achieve refined and three-dimensional sorting. Summary of the Invention

[0005] The purpose of this invention is to provide a logistics sorting device that enables real-time detection of package volume and weight, and automatically diverts packages to conveyor tracks at different heights based on the detection results.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a logistics sorting device, including a first conveyor, a second conveyor aligned with the first conveyor, a third conveyor disposed directly below the second conveyor, and a transfer mechanism for transferring logistics packages conveyed to the first conveyor to the second conveyor or the third conveyor respectively; Image recognition sensors are installed directly above and to the side of the first conveyor to detect the volume of the logistics package. The track switching mechanism includes a lifting adjustment mechanism disposed between the first conveyor and the second conveyor, and a lifting conveyor seat disposed on the lifting adjustment mechanism; A transfer conveyor roller is installed on the lifting conveyor seat; a pressure sensor is installed at the bottom of the lifting adjustment mechanism to detect the weight of the logistics package.

[0007] In this example, the lifting and adjusting mechanism further includes a support and a top plate disposed directly above the support via multiple guide rods; wherein the support is limited and disposed on the base by a limiting guide post, and a pressure sensor is installed between the support and the base.

[0008] In this example, the lifting conveyor seat includes a conveying frame and a plurality of rotating conveying rollers disposed within the conveying frame. The side wall of the conveying frame is provided with a guide sleeve adapted to the guide rod to ensure that the conveying frame is parallel to the support, and the conveying frame is driven to slide on the guide rod by a lifting drive mechanism. The pressure change triggered by the logistics package being conveyed to the rotating conveying roller is sent to the controller as a pressure change value signal by the pressure sensor, and the weight of the logistics package is recorded.

[0009] In this example, the lifting drive mechanism further includes lead screws symmetrically arranged on both sides of the lifting conveyor seat, driven bevel gears respectively disposed on the upper ends of the two lead screws, a synchronous drive shaft for driving the two driven bevel gears to rotate synchronously, and a servo motor for driving the synchronous drive shaft; wherein a drive bevel gear adapted to mesh with the driven bevel gear is disposed on the synchronous drive shaft; wherein the two side walls of the lifting conveyor seat are respectively connected to the lead screws via lead screw nut seats; the upper end and lower end of the lead screw are respectively disposed on the support and the top plate via bearings.

[0010] Furthermore, in this example, a lifting position sensor for detecting the specific position of the lifting conveyor seat is provided at the bottom of the top plate.

[0011] Furthermore, in this example, a position signal transmitter is provided at the bottom of the lifting conveyor.

[0012] Furthermore, in this example, an upper position signal receiver corresponding to the position signal transmitter is disposed on the second conveyor; and a lower position signal receiver corresponding to the position signal transmitter is disposed at the bottom of the third conveyor.

[0013] In this example, the image recognition sensor is further described as a 3D camera or an ultrasonic sensor.

[0014] In this example, the pressure sensor detects the weight m of the logistics package, and the image recognition sensor detects the volume v of the logistics package; the specific gravity ρ of the logistics package is m / v, where when the specific gravity ρ of the logistics package is greater than a set threshold, it is transferred to the second conveyor through a transfer mechanism, and when the specific gravity ρ of the logistics package is less than the set threshold, it is transferred to the third conveyor through a transfer mechanism.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are as follows: 1) Integrated detection and sorting: By integrating pressure sensors on the transfer mechanism and setting up image recognition sensors in front of it, the volume measurement, weight measurement and turning sorting of the same package are integrated into one, reducing the equipment footprint and improving sorting efficiency.

[0016] 2) Three-dimensional spatial layout: The lifting and lowering transfer mechanism realizes the docking of the upper and lower conveyors, enabling the sorting device to adapt to the layout of multi-level three-dimensional warehouses and significantly improve the utilization rate of warehouse vertical space.

[0017] 3) Rapid sorting based on specific gravity: It creatively proposes a sorting logic based on the "specific gravity" of packages, automatically diverting "heavy goods" and "light and bulky goods" to different tracks, laying a solid foundation for subsequent transportation and loading optimization and precise cost accounting.

[0018] 4) High-precision weighing and smooth lifting: The structure of installing a pressure sensor between the support and the base avoids interference with the weighing accuracy of the lifting mechanism; the dual screw synchronous drive and guide rod guiding structure ensure the stability and centering of the lifting conveyor during the lifting process. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the main structure of the logistics sorting device of the present invention; Figure 2 This is a schematic diagram of the descent adjustment of the logistics sorting device of the present invention; Figure 3 This is a schematic diagram of the conveyor platform structure of the logistics sorting device of the present invention; Figure 4 This is a schematic diagram of the lifting and adjusting mechanism of the logistics sorting device of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Lifting and adjusting mechanism; 11. Base; 111. Support; 112. Limiting guide column; 12. Guide rod; 13. Top plate; 14. Lead screw; 15. Driven bevel gear; 16. Drive bevel gear; 161. Synchronous drive shaft; 17. Lifting position sensor; 2. First conveyor; 21. First conveyor roller; 22. First drive motor; 3. Lifting conveyor seat; 31. Lead screw nut seat; 32. Guide sleeve; 33. Rotary conveyor roller; 34. Position signal transmitter; 35. Rotary motor; 4. Second conveyor; 41. Upper position signal receiver; 5. Third conveyor; 51. Lower position signal receiver; 6. Logistics package; 7. Pressure sensor; 8. Image recognition sensor. Detailed Implementation

[0022] Example 1 refer to Figure 1 This embodiment discloses a logistics sorting device, including a first conveyor 2, a second conveyor 4 aligned with the first conveyor 2, a third conveyor 5 installed directly below the second conveyor 4, and a transfer mechanism for transferring logistics packages 6 conveyed to the first conveyor 2 to the second conveyor 4 or the third conveyor 5 respectively; wherein image recognition sensors 8 are installed directly above and to the side of the first conveyor 2 for detecting the volume of the logistics packages 6.

[0023] The image recognition sensor 8 is a 3D camera; specifically, two Basler 3D cameras can be used to scan the passing package from the top and side respectively, to obtain the length, width and height data of the package, and to calculate the volume v.

[0024] The transfer mechanism includes a lifting adjustment mechanism 1 installed between the first conveyor 2 and the second conveyor 4, and a lifting conveyor seat 3 installed on the lifting adjustment mechanism 1; wherein a transfer conveyor roller 33 is installed on the lifting conveyor seat 3; wherein a pressure sensor 7 is installed at the bottom of the lifting adjustment mechanism 1 to detect the weight of the logistics package 6; the pressure sensor 7 is a pressure-type weighing sensor.

[0025] The pressure sensor 7 detects the weight m of the logistics package 6, and the image recognition sensor 8 detects the volume v of the logistics package 6. The specific gravity ρ of the logistics package is m / v. When the specific gravity ρ of the logistics package is greater than a set threshold, it is transferred to the second conveyor 4 through a transfer mechanism. When the specific gravity ρ of the logistics package is less than the set threshold, it is transferred to the third conveyor 5 through a transfer mechanism.

[0026] refer to Figure 1 and Figure 2 The lifting adjustment mechanism 1 includes a support 111 and a top plate 13 mounted directly above the support 111 via multiple guide rods 12. The support 111 is limited and mounted on the base 11 via limiting guide posts 112, and a pressure sensor 7 is installed between the support 111 and the base 11. The lifting conveyor 3 includes a conveying frame and multiple rotating conveyor rollers 33 mounted within the conveying frame. The sidewall of the conveying frame is fitted with guide sleeves 32 adapted to the guide rods 12 to ensure that the conveying frame is parallel to the support 111, and the conveying frame slides on the guide rods 12 via a lifting drive mechanism. The pressure change triggered by the logistics package 6 conveyed to the rotating conveyor rollers 33 is sent to the controller as a pressure change value signal via the pressure sensor 7, and the weight of the logistics package 6 is recorded.

[0027] refer to Figure 4 The lifting drive mechanism includes lead screws 14 symmetrically mounted on both sides of the lifting conveyor seat 3, driven bevel gears 15 respectively mounted on the upper ends of the two lead screws 14, a synchronous drive shaft 161 driving the two driven bevel gears 15 to rotate synchronously, and a servo motor driving the synchronous drive shaft 161; wherein a drive bevel gear 16 adapted to mesh with the driven bevel gear 15 is mounted on the synchronous drive shaft 161; wherein the two side walls of the lifting conveyor seat 3 are respectively connected to the lead screws 14 through lead screw nut seats 31; the upper end and lower end of the lead screw 14 are respectively mounted on the support 111 and the top plate 13 through bearings.

[0028] The synchronous drive shaft 161 is mounted on the top plate 13 via a bearing housing; the synchronous drive shaft 161 is driven by a servo motor (not shown in the figure) with an encoder. When the servo motor rotates, it drives the two lead screws 14 to rotate synchronously through the synchronous drive shaft 161 and the bevel gear pair (drive bevel gear 16), thereby driving the lifting conveyor 3 to rise and fall smoothly along the guide rod 12.

[0029] In this embodiment, a lifting position sensor 17, such as a laser rangefinder or a proximity switch, is installed at the bottom of the top plate 13 to detect the specific position of the lifting conveyor seat 3.

[0030] A position signal transmitter 34 is installed at the bottom of the lifting conveyor 3. An upper position signal receiver 41 corresponding to the position signal transmitter 34 is installed on the second conveyor 4; a lower position signal receiver 51 corresponding to the position signal transmitter 34 is installed at the bottom of the third conveyor 5.

[0031] In this embodiment, the image recognition sensor 8, pressure sensor 7, lifting position sensor 17, servo motor, drive motor of the rotating conveyor roller 33, upper position signal receiver 41, and lower position signal receiver 51 are all electrically connected to the controller 9 (such as a PLC or industrial computer).

[0032] The working process of this invention is as follows: S1 Package Entry and Detection: Logistics package 6 is conveyed by the first conveyor 2 to the front of the transfer mechanism. When the package passes through the scanning area of ​​the image recognition sensor 8, the sensor acquires a 3D image of the package, calculates the volume v of the package, and sends the data to the controller.

[0033] S2 Package Transfer to Lifting Conveyor: The package continues to move forward, transitioning from the first conveyor 2 to the transfer roller 33 of the lifting conveyor 3. Once the package is fully inside the lifting conveyor 3, the transfer roller 33 stops rotating.

[0034] S3 Dynamic Weighing: The weight of the package is transmitted to the pressure sensor 7 via the lifting conveyor 3, guide rod 12, and support 111. The pressure sensor 7 detects the pressure change value ΔP, and the controller calculates the weight m of the package according to a preset algorithm (m=ΔP / g). At this time, the controller has simultaneously obtained the volume v and weight m of the package.

[0035] S4 Sorting Decision: The controller calculates the specific gravity of the package ρ = m / v. The controller has a preset specific gravity threshold ρ0 (e.g., ρ0 = 200 kg / m³). 3 (This value can be adjusted according to the actual transportation and loading strategy). The controller compares ρ with ρ0: if ρ≥ρ0, the package is determined to be "heavy cargo", and the target conveyor is the upper second conveyor 4. If ρ<ρ0, the package is determined to be "lightweight cargo", and the target conveyor is the lower third conveyor 5.

[0036] S5 executes lifting and alignment: Based on the decision result, the controller starts the servo motor to drive the lifting conveyor 3 to rise and fall. If the target is the second conveyor 4, the lifting conveyor 3 rises. When the lifting position sensor 17 detects that it is close to the target height, the controller controls the servo motor to decelerate; when the signal from the position signal transmitter 34 is accurately received by the upper position signal receiver 41, the controller confirms that the lifting conveyor 3 has been precisely aligned with the second conveyor 4, and then stops the servo motor. If the target is the third conveyor 5, it descends in the same way until the lower position signal receiver 51 receives the signal and confirms that it is aligned with the third conveyor 5.

[0037] S6 Parcel Transfer: After alignment, the controller starts the transfer conveyor roller 33 to smoothly transport the logistics parcel 6 from the lifting conveyor seat 3 to the target conveyor (second conveyor 4 or third conveyor 5) to complete this sorting operation.

[0038] S7 Reset: After the package is delivered, the lifting conveyor 3 can be reset to the standby position as needed (usually flush with the first conveyor 2) to wait for the next package to be processed.

[0039] Example 2 This embodiment is basically the same as Embodiment 1, except that the image recognition sensor 8 uses an ultrasonic sensor array. Multiple ultrasonic sensors are arranged above and to the side of the lifting conveyor 3. By measuring the distance from the sensors to the surface of the package and combining this with the movement of the lifting conveyor 3, the outline of the package is reconstructed, and its volume is calculated. This method is low-cost and suitable for regularly shaped cartons.

[0040] Example 3 In this embodiment, the controller not only records the weight and volume of individual packages, but also uploads the data to the central management system. The central management system collects information on all sorted packages (e.g., the upper layer is for heavy goods, and the lower layer is for lightweight goods), providing accurate data support for subsequent loading and distribution, thereby maximizing transportation efficiency.

[0041] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A logistics sorting device, characterized in that: It includes a first conveyor (2), a second conveyor (4) aligned with the first conveyor (2), a third conveyor (5) located directly below the second conveyor (4), and a transfer mechanism that transfers the logistics packages (6) conveyed to the first conveyor (2) to the second conveyor (4) or the third conveyor (5); Image recognition sensors (8) are respectively installed above and to the side of the first conveyor (2) to detect the volume of the logistics package (6); The track switching mechanism includes a lifting adjustment mechanism (1) disposed between the first conveyor (2) and the second conveyor (4), and a lifting conveyor seat (3) disposed on the lifting adjustment mechanism (1); A transfer conveyor roller (33) is installed on the lifting conveyor seat (3); a pressure sensor (7) is provided at the bottom of the lifting adjustment mechanism (1) to detect the weight of the logistics package (6).

2. The logistics sorting device according to claim 1, characterized in that: The lifting adjustment mechanism (1) includes a support (111) and a top plate (13) set directly above the support (111) by a plurality of guide rods (12); wherein the support (111) is limited and set on the base (11) by a limiting guide post (112), and a pressure sensor (7) is installed between the support (111) and the base (11).

3. The logistics sorting device according to claim 2, characterized in that: The lifting conveyor seat (3) includes a conveying frame and a plurality of rotating conveyor rollers (33) disposed in the conveying frame. The side wall of the conveying frame is provided with a guide sleeve (32) adapted to the guide rod (12) to ensure that the conveying frame is parallel to the support (111) and the conveying frame is driven to slide on the guide rod (12) by the lifting drive mechanism. The pressure change triggered by the logistics package (6) conveyed to the rotating conveyor roller (33) is sent to the controller as a pressure change value signal by the pressure sensor (7) and the weight of the logistics package (6) is recorded.

4. The logistics sorting device according to claim 3, characterized in that: The lifting drive mechanism includes lead screws (14) symmetrically arranged on both sides of the lifting conveyor seat (3), driven bevel gears (15) respectively arranged on the upper ends of the two lead screws (14), a synchronous drive shaft (161) driving the two driven bevel gears (15) to rotate synchronously, and a servo motor driving the synchronous drive shaft (161); wherein a drive bevel gear (16) adapted to mesh with the driven bevel gear (15) is arranged on the synchronous drive shaft (161); wherein the two side walls of the lifting conveyor seat (3) are respectively connected to the lead screws (14) through lead screw nut seats (31); the upper end and lower end of the lead screw (14) are respectively arranged on the support (111) and the top plate (13) through bearings.

5. The logistics sorting device according to claim 3, characterized in that: A lifting position sensor (17) for detecting the specific position of the lifting conveyor seat (3) is provided at the bottom of the top plate (13).

6. The logistics sorting device according to claim 5, characterized in that: A position signal transmitter (34) is provided at the bottom of the lifting conveyor (3).

7. The logistics sorting device according to claim 6, characterized in that: An upper position signal receiver (41) corresponding to the position signal transmitter (34) is provided on the second conveyor (4); a lower position signal receiver (51) corresponding to the position signal transmitter (34) is provided at the bottom of the third conveyor (5).

8. The logistics sorting device according to claim 6, characterized in that: The image recognition sensor (8) is a 3D camera or an ultrasonic sensor.

9. The logistics sorting device according to claim 6, characterized in that: The pressure sensor (7) detects the weight m of the logistics package (6), and the image recognition sensor (8) detects the volume v of the logistics package (6). The specific gravity of the logistics package is ρ = m / v. When the specific gravity ρ of the logistics package is greater than a set threshold, it is transferred to the second conveyor (4) through the transfer mechanism. When the specific gravity ρ of the logistics package is less than the set threshold, it is transferred to the third conveyor (5) through the transfer mechanism.

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