Intelligent and convenient express sorting device based on RFID technology

Abstract

The application relates to the technical field of sorting equipment, and provides an intelligent and convenient express sorting device based on RFID technology, which comprises a mechanical transmission system and an electronic control system; the mechanical transmission system comprises an automatic piece arranging mechanism, a scanning and identifying mechanism, an automatic conveying mechanism, an eccentric push plate mechanism, a positioning and pushing mechanism and an express cabinet; the electronic control system comprises an express identifying module and an express pushing module; the express identifying module comprises express information identification, express volume measurement and information display; the express pushing module comprises cloud cabinet positioning and express conveying. The sorting device has the advantages of high sorting rate, low fault tolerance, high cloud cabinet utilization rate, high express cabinet entry efficiency, prevention of package accumulation, fast piece taking, saved piece taking time, high reliability, high speed, avoidance of violent sorting, prevention of customer information leakage and the like.

Description

Technical Field

[0001] This invention relates to the field of sorting equipment technology, and in particular to an intelligent and convenient express sorting device based on RFID technology. Background Technology

[0002] With the continuous development of the logistics and express delivery industry, parcel sorting and locker operations are gradually transforming from traditional manual labor to intelligent automated sorting. Currently, most intelligent express sorting devices on the market are large in size and mainly used in large logistics transit stations. For the final stage of express delivery, domestic express sorting primarily relies on manual pickup, accounting for as much as 96%. This method is not only inefficient and labor-intensive, but also frequently results in lost or misplaced parcels. Furthermore, workers engaged in express sorting year-round often suffer from varying degrees of lumbar muscle strain or lumbar disc herniation, severely impacting their quality of life.

[0003] In terms of intelligent technology, some parcel collection points use drones and robotic vehicles to transport packages. These devices carry packages along a predetermined trajectory, unloading them at the designated unloading point. After unloading, they return along the same trajectory to continue transporting goods. While this method offers high positioning accuracy and can completely replace manual labor, it is inefficient, time-consuming, and costly to manufacture. Although multiple devices can be used, considering the unpredictable nature of parcel pickups, multiple devices operating simultaneously would significantly reduce the satisfaction of parcel pick-ups.

[0004] There is an existing type of self-weight intelligent express sorting machine. The scanner scans the QR code on the express package and reads the information corresponding to the QR code. However, the express packages must be arranged by staff and are not integrated with express lockers, which prolongs the pickup time. Summary of the Invention

[0005] In order to solve the technical problems existing in the prior art, the main objective of the present invention is to provide an intelligent and convenient express sorting device based on RFID technology, which consists of two parts: mechanical transmission and electronic control, and can realize unmanned automatic sorting of packages and convenient automatic pushing of packages into express cabinets.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides an intelligent and convenient express sorting device based on RFID technology, comprising a mechanical transmission system and an electronic control system; the mechanical transmission system comprises an automatic packing mechanism, a scanning and identification mechanism, an automatic conveying mechanism, an eccentric pusher mechanism, a positioning and pushing mechanism, and an express cabinet;

[0008] The automatic package sorting mechanism is the initial mechanism of the mechanical transmission system, used for the orderly conveying of express parcels, enabling parcels to be automatically separated and moved along one side of the conveyor belt; the scanning and identification mechanism is used to scan parcel information and transmit the information to the main control board, corresponding to the express locker code; the automatic conveying mechanism is used to convey the scanned parcels to the eccentric pusher mechanism; the eccentric pusher mechanism uses the principle of an eccentric rocker mechanism to make the parcels move quickly in the horizontal direction through the pusher; the positioning and pushing mechanism is used to push the parcels into the designated express locker storage compartment;

[0009] The electronic control system includes a package identification module and a package delivery module. The package identification module includes three parts: package information identification, package volume measurement, and information display. The package delivery module includes two parts: cloud cabinet positioning and package delivery.

[0010] As a further embodiment of the present invention, the automatic packing mechanism includes roller I, stepper motor I, universal coupling, universal shaft bracket, multi-wedge belt, bottom support frame, long crossbeam, and short crossbeam; the automatic packing mechanism is the initial mechanism of the intelligent and convenient express sorting device based on RFID technology, and is a key part to ensure the orderly delivery of express packages. The bottom support frame is made of aluminum alloy casting, and the automatic packing mechanism is welded as a whole. The automatic packing mechanism has long crossbeams on both sides and two short crossbeams at the front and rear. The long crossbeams are bolted to the bottom support frame, and the short crossbeams are welded and embedded in the long crossbeams on both sides. Due to the requirements of the device, the two short crossbeams at the front and rear are specially designed with irregular shapes and are directly welded and embedded in the long crossbeams on both sides.

[0011] In addition, several rollers are embedded in the long crossbeam, and many rollers with a certain angle are set on the long crossbeam. This structure design allows the packages to be automatically separated and moved along one side of the conveyor belt. The rollers are connected to universal couplings fixed on the universal coupling bracket, and the universal couplings are built into one side of the long crossbeam. The universal couplings fixed on the universal coupling bracket are connected to the roller shafts and are built into the right side of the long crossbeam. This can convert the roller's oblique drive mode into a general direct drive mode.

[0012] The two universal joint supports of the automatic parts arrangement mechanism are connected by a multi-wedge belt, and the multiple multi-wedge belts are connected in an alternating manner. The multi-wedge belt connection can ensure the stability of the transmission, and the use of multiple multi-wedge belts in an alternating manner can greatly reduce the problem of insufficient power provided by the motor due to multi-stage transmission.

[0013] A stepper motor is fixed in the middle of the automatic parts feeding mechanism. The stepper motor is fixed in the middle of the entire device and provides power for the rotation of the rollers.

[0014] As a further embodiment of the present invention, the scanning and identification mechanism includes an RFID radio frequency identifier, a light curtain sensor, a vertical beam, and a horizontal beam I; the horizontal beam and the vertical beam are connected by welding to form a rectangular frame, and the RFID radio frequency identifier is fixed on the top of the frame. The RFID radio frequency identifier is used to scan package information and transmit the information to the main control board, which corresponds to the code of the express cabinet; light curtain sensors are fixed on both sides of the scanning and identification mechanism to detect the volume and size of the express package.

[0015] As a further embodiment of the present invention, the automatic conveying mechanism includes a roller chain, roller II, gears, crossbeam II, bracket, vertical bracket, horizontal bracket, adjustable support base, support rod, stepper motor II, and motor support; the bottom support frame is composed of a bracket, vertical bracket, horizontal bracket, adjustable support base, and support rod, the adjustable support base is connected to the vertical bracket by a double-ended stud, the upper end of the vertical bracket is connected to the bracket, the upper end of the bracket is connected to the crossbeam, and the bracket, vertical bracket, horizontal bracket, adjustable support base, and support rod are all connected to each other by bolts;

[0016] The bottom support frame comprises four sets of brackets, vertical brackets, adjustable support bases, and clamping rods. Two layers of horizontal brackets are welded between the left and right support frames, and clamping rods are welded between the lower horizontal brackets at both the front and rear ends, effectively ensuring the stability of the device. Furthermore, a motor bracket is fixed to the left side of the upper horizontal bracket to house a stepper motor. The motor shaft and roller shaft are driven by a roller chain and gears, providing power for the device's operation. The roller shaft features a double-gear structure, with adjacent shafts connected in an interleaved manner, which not only ensures smoother transmission but also improves transmission efficiency.

[0017] As a further embodiment of the present invention, the eccentric push plate mechanism includes a push plate, a movable crossbar, a base, a fixed vertical bar, a connecting rod, an eccentric wheel, and a servo motor I; a support, i.e. a base, is provided at the bottom of the eccentric push plate mechanism, and a fixed vertical bar is welded to the upper part of the eccentric push plate mechanism. A groove is provided at a certain distance from the fixed vertical bar, so that the movable crossbar welded to the push plate moves horizontally along the groove direction, effectively ensuring balanced force.

[0018] The eccentric push plate mechanism adopts the principle of an eccentric rocker mechanism. A push plate is added to the eccentric rocker mechanism, and a servo motor is used as the drive source to drive the eccentric wheel to rotate, thereby making the push plate move rapidly in the horizontal direction under the action of the connecting rod.

[0019] As a further embodiment of the present invention, the positioning and pushing mechanism includes a vertical track, a horizontal track, a servo motor II, a synchronous belt I, a servo motor III, a synchronous wheel I, a telescopic push plate, a push basket, rollers, a synchronous belt II, a synchronous wheel II, balls, a ball frame, a telescopic arm, a two-arm connector, a lead screw, a stepper motor III, a bottom support plate, and a four-arm connector.

[0020] The positioning and pushing mechanism mimics the principle of a 3D printer, allowing the pushing basket on it to move freely in three-dimensional space, thereby pushing the package to the designated storage compartment of the express cabinet. The positioning and pushing mechanism mainly consists of three directions of movement: vertical, horizontal and longitudinal.

[0021] The vertical components of the positioning and pushing mechanism include a vertical track, a telescopic arm, a two-arm connector, a lead screw, a stepper motor III, a bottom support plate, and a four-arm connector. The bottom support plate is welded to the vertical track at a 90° angle. The telescopic arm, the two-arm connector, the lead screw, the stepper motor III, and the four-arm connector together form a telescopic unit. The stepper motor III is built into the vertical track. The upper and lower telescopic arms in a telescopic unit are connected by the two-arm connector, and the four-arm connector is used to connect them at the connection points of the telescopic units. These three telescopic units are sufficient to meet the requirements of this device. The stepper motor III drives the lead screw to realize the opening and closing of the telescopic arm, and at the same time, it can realize the telescopic movement in the vertical direction.

[0022] The horizontal components of the positioning and pushing mechanism include a horizontal track, a servo motor II, a synchronous belt I, a synchronous pulley I, a telescopic push plate, a push basket, ball bearings, and a ball bearing bracket. A ball bearing slide is provided on the horizontal track, and a slot is cut in the middle of the track to connect the push basket to the synchronous belt I. The servo motor II provides the power source, driving the synchronous pulley I to rotate, thereby driving the synchronous belt I. Simultaneously, the push basket is welded to the ball bearing bracket, and a ball bearing slide is provided under the bracket. With the help of the ball bearings, the stress on the synchronous belt I is reduced. The push basket is fixed on the synchronous belt I, thus enabling the lateral movement of the push basket. The two ends of the horizontal track are connected to a vertical telescopic mechanism via bolts, thus achieving two-dimensional planar movement of the push basket.

[0023] The longitudinal components of the positioning and pushing mechanism include a servo motor III, a telescopic push plate, a push basket, rollers, a synchronous belt II, and a synchronous wheel II. Two layers of slides are provided on the left side of the push basket. The upper slide fixes the synchronous belt II and the synchronous wheel II, while the lower slide is for the rollers. The synchronous belt II and the rollers are connected together to form a telescopic push plate suitable for most express parcels. Driven by the synchronous belt II driven by the servo motor III, the push plate moves longitudinally in conjunction with the rollers. Through the cooperation of various slides and components, the three-dimensional movement of the push basket is achieved.

[0024] As a further embodiment of the present invention, the express cabinet includes a cabinet door, a cabinet body, and an elastic lock; the express cabinet does not require a back door and is directly connected to the positioning and pushing device, and the back of the entire cabinet body is against the wall, so as not to cause the problem of leakage of the recipient's information. The cabinet door and the elastic lock are combined to automatically open the door corresponding to the express package to be picked up, so as to facilitate the recipient to pick up the package.

[0025] As a further embodiment of the present invention, the express delivery identification module is equipped with an STM32F103 microcontroller as its core, which measures the weight of the express delivery through an HX711 pressure sensor, establishes a database through RFID radio frequency technology to scan the express delivery, and uses a light curtain sensor to measure the volume of the express delivery. Based on the above feedback information, the STM32F103 microcontroller corresponds to the cloud cabinet code and uses an LCD screen to display the express delivery information in real time, realizes the automatic identification of express delivery information, accurately determines the coordinates of the package entering the cabinet, and allows the courier to monitor the location of the express delivery information in real time through the LCD screen.

[0026] As a further aspect of the present invention, the express delivery pushing module is equipped with an STM32F103 microcontroller as its core, and all transmission devices are driven by motors. A pressure sensor module detects whether an express delivery has been placed into the automatic sorting mechanism, implementing closed-loop control of the stepper motor to ensure accurate express delivery speed. An infrared sensor detects whether an express delivery has entered the pushing frame range, and a servo motor drives the pusher plate to move the express delivery into the pushing frame. An algorithm writes the coordinate information of the express cabinet storage cell into the STM32F103 microcontroller, matching it with the information from the identification module to realize express delivery placement into the cabinet. Two servo motors and one stepper motor work together to enable the free movement of the pushing frame.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] This invention provides an intelligent and convenient express sorting device based on RFID technology, dedicated to the intelligent and automated research of the "last mile" of the express logistics industry. It changes the traditional manual parcel sorting method, eliminating the need for human intervention and significantly reducing the workload of express delivery workers. Addressing the automation issue in express sorting, this device utilizes a combination of mechanisms such as automatic sorting, automatic conveying, eccentric pushers, and positioning pushers to automatically sort and place express parcels into lockers. The automatic sorting mechanism ensures that parcels do not accumulate, transporting them sequentially and according to the flow. The positioning pusher mechanism can push parcels of various shapes and sizes into the lockers according to coordinates. The sorting speed is high, with a low error tolerance, saving the express delivery industry significant time and labor costs.

[0029] Secondly, by adopting RFID radio frequency identification technology, the volume of the package can be effectively identified. After sorting, the package is automatically put into the express cabinet via a conveyor belt and positioning push mechanism. This not only improves the sorting error tolerance rate, but also realizes the intelligent matching between the package volume and the express cabinet volume, which can greatly improve the utilization rate of the cloud cabinet. At the same time, the recipient can quickly pick up the package, saving the recipient's time.

[0030] Furthermore, the use of multiple positioning and pushing mechanisms and parcel lockers improves parcel delivery efficiency and avoids package accumulation. Fourth, when the recipient picks up their package, the parcel door automatically locates and opens, facilitating retrieval and saving time. In addition, this device also boasts advantages such as high reliability, high speed, prevention of rough handling, and protection against customer information leakage.

[0031] These or other aspects of the invention will become more apparent from the following description of embodiments. It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. In the drawings:

[0033] Figure 1 This is a transmission system diagram of an intelligent and convenient express sorting device based on RFID technology in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the automatic packing mechanism in an intelligent and convenient express sorting device based on RFID technology, as described in an embodiment of the present invention.

[0035] Figure 3 This is a schematic diagram of the scanning and identification mechanism in an intelligent and convenient express sorting device based on RFID technology, as described in an embodiment of the present invention.

[0036] Figure 4 This is a schematic diagram of the automatic conveying mechanism in an intelligent and convenient express sorting device based on RFID technology according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the eccentric pusher mechanism in an intelligent and convenient express sorting device based on RFID technology according to an embodiment of the present invention.

[0038] Figure 6 This is a schematic diagram of the positioning and pushing mechanism in an intelligent and convenient express sorting device based on RFID technology according to an embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of the structure of a smart and convenient express sorting device based on RFID technology in an embodiment of the present invention;

[0040] Figure 8 This is a schematic diagram of the control system in an intelligent and convenient express sorting device based on RFID technology, according to an embodiment of the present invention.

[0041] The attached diagram is labeled as follows: A - Automatic packing mechanism, B - Scanning and identification mechanism, C - Automatic conveying mechanism, D - Eccentric pusher mechanism, E - Positioning and pushing mechanism, F - Express locker;

[0042] 1-Roller I, 2-Stepper Motor I, 3-Universal Coupling, 4-Universal Shaft Support, 5-Multi-Wedge Belt, 6-Bottom Support Frame, 7-Long Crossbeam, 8-Short Crossbeam; 9-RFID Radio Frequency Identifier, 10-Light Curtain Sensor, 11-Vertical Beam, 12-Crossbeam I; 13-Roller Chain, 14-Roller II, 15-Gear, 16-Crossbeam II, 17-Support, 18-Vertical Support, 19-Horizontal Support, 20-Adjustable Support Base, 21-Holding Rod, 22-Stepper Motor II, 23-Motor Support; 24-Push Plate, 25-Movable Crossbar, 26-Base, 27 - Fixed vertical rod, 28- Connecting rod, 29- Eccentric wheel, 30- Servo motor I; 31- Vertical rail, 32- Horizontal rail, 33- Servo motor II, 34- Synchronous belt I, 35- Servo motor III, 36- Synchronous pulley I, 37- Telescopic push plate, 38- Push basket, 39- Roller, 40- Synchronous belt II, 41- Synchronous pulley II, 42- Ball bearing, 43- Ball bearing frame, 44- Telescopic arm, 45- Two-arm connector, 46- Lead screw, 47- Stepper motor III, 48- Bottom support plate, 49- Four-arm connector; 50- Cabinet door, 51- Cabinet body, 52- Elastic lock.

[0043] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0045] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding" are understood to exclude the number itself, and "above", "below", "within" are understood to include the number itself.

[0046] In the description of this invention, the consecutive numbers of the method steps are for ease of review and understanding. Considering the overall technical solution of this invention and the logical relationship between each step, adjusting the implementation order of the steps will not affect the technical effect achieved by the technical solution of this invention.

[0047] In the description of this invention, unless otherwise explicitly defined, terms such as "setup" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0048] See Figures 1 to 8 As shown, one embodiment of the present invention provides an intelligent and convenient express sorting device based on RFID technology, including a mechanical transmission system and an electronic control system; the mechanical transmission system comprises an automatic packing mechanism A, a scanning and identification mechanism B, an automatic conveying mechanism C, an eccentric pusher mechanism D, a positioning and pushing mechanism E, and an express cabinet F.

[0049] See Figure 1 and Figure 2 As shown, the automatic package sorting mechanism A is the initial mechanism of the mechanical transmission system, used for the orderly conveying of express parcels, enabling the parcels to be automatically separated and moved along one side of the conveyor belt; the scanning and identification mechanism B is used to scan the parcel information and transmit the information to the main control board, corresponding to the code of the express cabinet F; the automatic conveying mechanism C is used to convey the scanned parcel to the eccentric push plate mechanism D; the eccentric push plate mechanism D uses the principle of eccentric rocker mechanism to make the parcel move quickly in the horizontal direction through the push plate 24; the positioning and pushing mechanism E is used to push the parcel to the designated storage cell of the express cabinet F.

[0050] The automatic sorting mechanism A includes roller I1, stepper motor I2, universal coupling 3, universal shaft bracket 4, multi-wedge belt 5, bottom support frame 6, long crossbeam 7, and short crossbeam 8. The automatic sorting mechanism A is the initial mechanism of the intelligent and convenient express sorting device based on RFID radio frequency technology and is a key part to ensure the orderly delivery of express packages. The bottom support frame 6 is made of aluminum alloy. The automatic sorting mechanism A is welded as a whole. The automatic sorting mechanism A has long crossbeams 7 on both sides and two short crossbeams 8 at the front and rear. The long crossbeams 7 are bolted to the bottom support frame 6, and the short crossbeams 8 are welded and embedded into the long crossbeams 7 on both sides. Due to the needs of the device, the two short crossbeams 8 at the front and rear are specially designed with irregular shapes and are directly welded and embedded into the long crossbeams 7 on both sides.

[0051] In addition, several rollers are embedded in the long crossbeam 7. Many rollers with a certain angle are set on the long crossbeam 7. This structure design allows the packages to be automatically separated and moved along the conveyor belt. The rollers are connected to the universal coupling 3 fixed on the universal coupling 3 bracket 17. The universal coupling 3 is built into one side of the long crossbeam 7. The universal coupling 3 fixed on the universal coupling 3 bracket 17 is connected to the roller shaft and built into the right side of the long crossbeam 7. It can convert the roller's oblique drive mode into a general direct drive mode.

[0052] The two universal couplings 3 and brackets 17 of the automatic parts arrangement mechanism A are connected by a multi-wedge belt 5, and the multiple multi-wedge belts 5 are connected in an alternating manner. The multi-wedge belt 5 connection can ensure the stability of the transmission, and the use of multiple multi-wedge belts 5 in an alternating manner can greatly reduce the problem of insufficient power provided by the motor due to multi-stage transmission.

[0053] A stepper motor is fixed in the middle of the automatic parts feeding mechanism A. The stepper motor is fixed in the middle of the entire device and provides power for the rotation of the rollers.

[0054] In the embodiments of this application, a stepper motor I2 drives the universal coupling 3, which is fixed on the bracket 17 of the universal coupling 3, to rotate. The other end of the universal coupling 3 is connected to a roller, and the rollers are connected by multiple wedge belts 5 in an alternating manner to achieve the rotation of each roller, thereby propelling the express delivery forward. Furthermore, this mechanism uses the universal coupling 3 and the bracket 17 of the universal coupling 3 at a certain angle to change the oblique drive method of the rollers to a straight drive method, solving the problem of the inconvenience of oblique drive. The design of the rollers being arranged obliquely allows the express delivery to be conveyed orderly along one side of the conveyor belt.

[0055] See Figure 1 and Figure 3 As shown, the scanning and identification mechanism B includes an RFID radio frequency reader, a light curtain sensor 10, a vertical beam 11, and a horizontal beam I 12. The horizontal beam and the vertical beam are connected by welding to form a rectangular frame. The RFID radio frequency reader is fixed on the top of the frame. The RFID radio frequency reader is used to scan package information and transmit the information to the main control board, which corresponds to the F code of the express cabinet. The light curtain sensors 10 are fixed on both sides of the scanning and identification mechanism B to detect the volume and size of the express package.

[0056] The scanning and identification mechanism B is mainly used to fix the light curtain sensor 10 and the RFID radio frequency identifier. The light curtain sensor 10 is fixed on the vertical beams 11 on both sides, and the RFID radio frequency identifier is fixed on the horizontal beam. The light curtain sensor 10 is mainly used to identify the size and volume of the express package, and the RFID radio frequency identifier is mainly used to identify the information of the express package, which corresponds to the F code of the express cabinet. The advantage of the radio frequency identifier is that it can detect objects through objects and does not require manual alignment.

[0057] See Figure 1 and Figure 4As shown, the automatic conveying mechanism C includes a roller chain 13, roller II 14, gear 15, crossbeam II 16, bracket 17, vertical bracket 18, horizontal bracket 19, adjustable support base 20, support rod 21, stepper motor II 22, and motor support 23; the bottom support frame 6 is composed of bracket 17, vertical bracket 18, horizontal bracket 19, adjustable support base 20, and support rod 21. The adjustable support base 20 is connected to the vertical bracket 18 by double-ended studs. The upper end of the vertical bracket 18 is connected to the bracket 17, and the upper end of the bracket 17 is connected to the crossbeam. The bracket 17, vertical bracket 18, horizontal bracket 19, adjustable support base 20, and support rod 21 are all connected in pairs by bolts.

[0058] The bottom support frame 6 comprises four sets of brackets 17, vertical brackets 18, adjustable support bases 20, and supporting rods 21. Two layers of horizontal brackets 19 are welded between the left and right support frames, and supporting rods 21 are welded between the lower horizontal brackets 19 at both ends, effectively ensuring the stability of the device. Furthermore, a motor support 23 is fixed to the left side of the upper horizontal bracket 19 to house a stepper motor. The motor shaft and roller shaft are driven by a roller chain 13 and a gear 15, providing power for the device's operation. The roller shaft is equipped with a double gear 15 structure, and adjacent shafts are connected in an interlaced manner, which not only makes the transmission smoother but also improves transmission efficiency.

[0059] In the embodiments of this application, the automatic conveying mechanism C is similar to a general roller conveyor belt, both serving the function of transporting items. The bottom support frame 6 adopts an adjustable structure, which can be adjusted according to actual conditions. A support rod 21 is welded to the bottom to make the mechanism more stable and fully meet daily needs. The power source uses a 57 series stepper motor with high output torque, low temperature rise, low noise, and smooth operation, which, together with gears 15 and roller chains 13, achieves smooth operation of the mechanism. The mechanism adopts a double gear structure 15, and adjacent shafts are connected alternately by roller chains 13 to improve transmission efficiency.

[0060] See Figure 1 and Figure 5 As shown, the eccentric push plate mechanism D includes a push plate 24, a movable crossbar 25, a base 26, a fixed vertical bar 27, a connecting rod 28, an eccentric wheel 29, and a servo motor I 30; the bottom of the eccentric push plate mechanism D is provided with a support, namely the base 26, and the upper part of the eccentric push plate mechanism D is welded with the fixed vertical bar 27. A groove is provided at a certain distance from the fixed vertical bar 27, so that the movable crossbar 25 welded to the push plate 24 can move horizontally along the direction of the groove, effectively ensuring balanced force.

[0061] The eccentric push plate mechanism D adopts the principle of an eccentric rocker mechanism. A push plate 24 is added to the eccentric rocker mechanism. A servo motor is used as the drive source to drive the eccentric wheel 29 to rotate, thereby making the push plate 24 move rapidly in the horizontal direction under the action of the connecting rod 28.

[0062] In the embodiments of this application, the eccentric pusher mechanism D, based on mechanical principles and mechanical design, welds a pusher plate 24 onto the original basic mechanism and uses a servo motor as the power source to achieve rapid pushing of the express delivery.

[0063] See Figure 1 and Figure 6 As shown, the positioning and pushing mechanism E includes a vertical track 31, a horizontal track 32, a servo motor II 33, a synchronous belt I 34, a servo motor III 35, a synchronous wheel I 36, a telescopic push plate 37, a push basket 38, a roller 39, a synchronous belt II 40, a synchronous wheel II 41, a ball bearing 42, a ball bearing frame 43, a telescopic arm 44, a two-arm connector 45, a lead screw 46, a stepper motor III 47, a bottom support plate 48, and a four-arm connector 49.

[0064] The positioning and pushing mechanism E mimics the principle of a 3D printer, allowing its push basket 38 to move freely in three-dimensional space, thereby pushing the package to the designated express cabinet F storage compartment. The positioning and pushing mechanism E mainly operates in three directions: vertical, horizontal, and longitudinal.

[0065] The vertical components of the positioning and pushing mechanism E include a vertical track 31, a telescopic arm 44, a two-arm connector 45, a lead screw 46, a stepper motor III 47, a bottom support plate 48, and a four-arm connector 49. The bottom support plate 48 is welded to the vertical track 31 at a 90° angle. The telescopic arm 44, the two-arm connector 45, the lead screw 46, the stepper motor III 47, and the four-arm connector 49 together form a telescopic unit. The stepper motor III 47 is built into the vertical track 31. The upper and lower telescopic arms 44 in one telescopic unit are connected by the two-arm connector 45, and the four-arm connector 49 is used to connect them at the connection point of the telescopic unit. These three telescopic units are sufficient to meet the requirements of this device. The stepper motor III 47 drives the lead screw 46 to realize the opening and closing of the telescopic arm 44, and at the same time, it can realize the telescopic movement in the vertical direction.

[0066] The horizontal components of the positioning and pushing mechanism E include a horizontal track 32, a servo motor II 33, a synchronous belt I 34, a synchronous pulley I 36, a telescopic push plate 37, a push basket 38, ball bearings 42, and a ball bearing holder 43. The horizontal track 32 has a ball bearing 42 slide rail and a slot in the middle to connect the push basket 38 to the synchronous belt I 34. The servo motor II 33 provides power to drive the synchronous pulley I 36 to rotate, thereby driving the synchronous belt I 34. Simultaneously, the push basket 38 is welded to the ball bearing holder 43. A ball bearing 42 slide rail is located under the bracket 17. With the help of the ball bearings 42, the stress on the synchronous belt I 34 is reduced. The push basket 38 is fixed to the synchronous belt I 34, thus enabling the lateral movement of the push basket 38. The two ends of the horizontal track 32 are connected to a vertical telescopic mechanism via bolts, thus enabling the two-dimensional planar movement of the push basket 38.

[0067] The longitudinal components of the positioning and pushing mechanism E include a servo motor III 35, a telescopic push plate 37, a push basket 38, rollers 39, a synchronous belt II 40, and a synchronous wheel II 41. The push basket 38 has two layers of slides on its left side. The upper slide is fixed to the synchronous belt II 40 and the synchronous wheel II 41, and the lower slide is for the rollers 39. The synchronous belt II 40 and the rollers 39 are connected together to the telescopic push plate 37, which is suitable for most express parcels. Driven by the synchronous belt II 40 driven by the servo motor III 35, the push plate 24 moves longitudinally in conjunction with the rollers 39. Through the cooperation of various slides and components, the three-dimensional movement of the push basket 38 is achieved.

[0068] In the embodiments of this application, the positioning and pushing mechanism E has three directions of movement. Vertically, it consists of a telescopic unit composed of a stepper motor III 47, a lead screw 46, and a telescopic arm 44. The stepper motor III 47 drives the lead screw 46 to rotate, realizing the opening and closing of the telescopic arm 44. The three telescopic units are connected by three four-arm connectors 49, and its maximum length exceeds the height of the express cabinet F, fully meeting the requirements. Horizontally, a servo motor II 33 drives the synchronous belt I 34, which, in conjunction with the ball bearing 42 slide rail, can improve operating efficiency and positioning accuracy. Vertically, it is the movement of the telescopic push plate 37 on the push basket 38, which is also driven by a servo motor III 35 and a synchronous belt II 40 to push the package into the express cabinet F. The independent compound movement in the three directions can improve transmission efficiency and realize the free movement of the package in three-dimensional space.

[0069] See Figure 1 and Figure 7 As shown, the express cabinet F includes a cabinet door 50, a cabinet body 51, and an elastic lock 52. The express cabinet F does not require a back door and is directly connected to the positioning and pushing device. The back of the entire cabinet body 51 is against the wall, which will not cause the problem of leakage of the recipient's information. The cabinet door 50 and the elastic lock 52 are combined to automatically open the corresponding express door of the express package to be picked up, making it convenient for the recipient to pick up the package.

[0070] In the embodiments of this application, the express delivery locker F simulates cloud lockers such as Fengchao. Based on market research results, the express delivery locker F is set up to meet the needs of 92% of express parcels, thereby improving the utilization rate of the express delivery locker F. It is equipped with an elastic latch 52 that automatically pops open when the recipient retrieves the parcel, ensuring precise positioning and saving retrieval time.

[0071] See Figure 1 and Figure 8 As shown, the electronic control system includes a package identification module and a package push module. The package identification module includes three parts: package information identification, package volume measurement, and information display. The package push module includes two parts: cloud cabinet positioning and package delivery.

[0072] See Figure 8 As shown, the express delivery identification module is equipped with an STM32103 microcontroller as its core, which uses an HX711 pressure sensor to measure the weight of the express delivery, establishes a database through RFID radio frequency technology to scan the express delivery, and a light curtain sensor 10 to measure the volume of the express delivery. Based on the above feedback information, the STM32103 microcontroller corresponds to the cloud cabinet code and uses an L-shaped LCD screen to display the express delivery information in real time, realize the automatic identification of express delivery information, accurately determine the coordinates of the package entering the cabinet, and enable the courier to monitor the location of the express delivery information in real time through the L-shaped LCD screen.

[0073] See Figure 8 As shown, the express delivery pushing module is equipped with an STM32103 microcontroller as its core, and all transmission devices are driven by motors. A pressure sensor module detects whether an express delivery has been placed into the automatic sorting mechanism A, implementing closed-loop control of the stepper motor to ensure accurate express delivery speed. An infrared sensor detects whether an express delivery has entered the pushing frame range, and a servo motor drives the pusher plate 24 to move the express delivery into the pushing frame. An algorithm writes the coordinate information of the express cabinet F storage cell into the STM32103 microcontroller, matching it with the information from the identification module to realize express delivery placement into the cabinet. Two servo motors and one stepper motor work together to enable the free movement of the pushing frame.

[0074] Therefore, see Figure 1 and Figure 8 As shown, in the electronic control system, the STM32103 microcontroller serves as the main control board, communicating with various modules, receiving information from each module, running corresponding algorithms to process the information, and driving the corresponding mechanical transmission structure to achieve the corresponding functions.

[0075] A database is established using RFID radio frequency technology to identify express delivery information, and the package information is fed back to the STM32103 microcontroller. A light curtain sensor 10 is used to identify the size of the express delivery, and the identification information is fed back to the STM32103 microcontroller. The coordinate information of the cloud cabinet is written into the algorithm and matched with the feedback information from the light curtain sensor 10 and the RFID radio frequency sensor. The STM32103 microcontroller performs algorithm processing to determine the corresponding express cabinet F, generate the cloud cabinet code, and store the express delivery information.

[0076] The electronic screen communicates with the STM32103 microcontroller via serial port to display the package identification and locker entry information in real time. The courier places the package on the automatic package sorting mechanism A and powers on the device. After powering on, the STM32103 microcontroller and each device are initialized. The sensors determine whether each moving part of the device has returned to its origin. If it is not at its origin, the stepper motor is controlled to rotate so that each part automatically returns to its origin. The sensors are then reset to zero again.

[0077] After completing the power-on self-test, the pressure sensor determines whether a package has been sent onto the conveyor belt. If the pressure sensor does not change, the feedback information puts the STM32103 microcontroller into standby mode. If the pressure sensor changes, the automatic conveyor mechanism C starts, moving the package to the scanning and identification mechanism B. The RFID radio frequency device identifies the express delivery information, and then the light curtain sensor 10 measures the length, width, and height of the package. After the identification and measurement are completed, the data is fed back to the STM32103 microcontroller for algorithm processing to calculate the coordinates of the package entering the express cabinet F and generate the cloud cabinet code.

[0078] Meanwhile, the electronic screen will display the corresponding package information. Before the package reaches the eccentric pusher mechanism D, the servo motor I 30 drives the eccentric wheel 29, causing the pusher plate 24 to push the package into the loading basket 38. The loading basket 38 uses a pressure sensor to monitor whether a package has been placed inside. If so, the loading basket 38 starts, and its size is adjusted according to the package information stored in the STM32103 microcontroller. It automatically positions the storage compartment according to the coordinates of the storage compartment in the express cabinet F. Then, the main control board drives the independent movement of each part of the positioning and pushing mechanism E, moving the loading basket 38 to the corresponding coordinate position and pushing the package into the express cabinet F. After being pushed in, the electronic display screen will show "into cabinet" in the corresponding package information section. The loading basket 38 returns to its original position, and the pressure sensor again checks if a package has been delivered to it. If so, the size of the loading basket 38 is adjusted again according to the stored information, and a package is pushed in. If no package has been delivered, it waits for another package to be placed inside. This process is repeated until all packages are sorted.

[0079] In summary, this invention provides an intelligent and convenient express sorting device based on RFID radio frequency technology, dedicated to the intelligent and automated research of the "last mile" of the express logistics industry. It changes the traditional manual parcel sorting method, eliminating the need for manual labor throughout the entire process and significantly reducing the workload of express delivery workers. Addressing the automation issue in express sorting, this device achieves automatic parcel sorting and placement into lockers through the coordination of mechanisms such as automatic packing, automatic conveying, eccentric pusher 24, and positioning push. The automatic packing mechanism A ensures that parcels do not accumulate, conveying them sequentially and according to the process. The positioning push mechanism E pushes parcels of various shapes and sizes into the express locker F according to coordinates. The sorting speed is fast, with a low error tolerance, saving the express delivery industry significant time and labor costs.

[0080] Secondly, by adopting RFID radio frequency identification technology, the volume of the package can be effectively identified. After sorting, the package is automatically put into the express cabinet F via the conveyor belt and positioning push mechanism E. While improving the sorting error tolerance rate, it can realize the intelligent matching between the volume of the package and the volume of the express cabinet F, which can greatly improve the utilization rate of the cloud cabinet. At the same time, the recipient can quickly pick up the package, saving the recipient's time.

[0081] Furthermore, the use of multiple positioning and pushing mechanisms (E) and parcel lockers (F) improves the efficiency of parcel delivery and prevents parcel accumulation. Fourth, when the recipient retrieves the parcel, the parcel door automatically positions and opens, facilitating retrieval and saving time. In addition, this device also boasts advantages such as high reliability, high speed, prevention of rough handling, and protection against customer information leakage.

[0082] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A smart and convenient express sorting device based on RFID technology, characterized in that, It includes a mechanical transmission system and an electronic control system; the mechanical transmission system consists of an automatic packing mechanism (A), a scanning and identification mechanism (B), an automatic conveying mechanism (C), an eccentric pusher mechanism (D), a positioning and pushing mechanism (E), and a parcel locker (F); The automatic package sorting mechanism (A) is the initial mechanism of the mechanical transmission system, used for orderly delivery of express parcels, enabling parcels to be automatically separated and moved along one side of the conveyor belt; the scanning and identification mechanism (B) is used to scan parcel information and transmit the information to the main control board, corresponding to the code of the express cabinet (F); the automatic conveying mechanism (C) is used to transmit the scanned parcel to the eccentric push plate mechanism (D); the eccentric push plate mechanism (D) uses the principle of eccentric rocker mechanism to make the parcel move quickly in the horizontal direction through the push plate (24); the positioning and pushing mechanism (E) is used to push the parcel to the designated storage cell of the express cabinet (F); The electronic control system includes a package identification module and a package delivery module. The package identification module includes three parts: package information identification, package volume measurement, and information display. The package delivery module includes two parts: cloud cabinet positioning and package delivery. The automatic parts arrangement mechanism (A) includes roller I (1), stepper motor I (2), universal coupling (3), universal shaft bracket (4), multi-wedge belt (5), bottom support frame (6), long crossbeam (7) and short crossbeam (8); The bottom support frame (6) is made of aluminum alloy. The automatic parts arrangement mechanism (A) has long crossbeams (7) on both sides and two short crossbeams (8) at the front and back. The long crossbeams (7) are bolted to the bottom support frame (6) and the short crossbeams (8) are welded into the long crossbeams (7) on both sides. Several rollers are embedded in the long crossbeam (7), and the rollers are shaft connected to the universal coupling (3) fixed on the universal coupling (3) bracket (17). The universal coupling (3) is built into one side of the long crossbeam (7). The two universal coupling (3) brackets (17) of the automatic parts arrangement mechanism (A) are connected by a multi-wedge belt (5), and the multiple multi-wedge belts (5) are connected in an alternating manner. A stepper motor is fixed in the middle of the automatic parts arrangement mechanism (A). The automatic conveying mechanism (C) includes a roller chain (13), roller II (14), gear (15), crossbeam II (16), bracket (17), vertical bracket (18), horizontal bracket (19), adjustable support base (20), support rod (21), stepper motor II (22), and motor support (23); the bottom support frame (6) is composed of bracket (17), vertical bracket (18), horizontal bracket (19), adjustable support base (20), and support rod (21). The adjustable support base (20) is connected to the vertical bracket (18) by a double-ended stud. The upper end of the vertical bracket (18) is connected to the bracket (17), and the upper end of the bracket (17) is connected to the crossbeam. The bracket (17), vertical bracket (18), horizontal bracket (19), adjustable support base (20), and support rod (21) are all connected to each other by bolts. The bottom support frame (6) is configured with four sets of brackets (17), vertical brackets (18), adjustable support base (20) and support rods (21). Two layers of horizontal brackets (19) are welded between the left and right support frames, and support rods (21) are welded between the lower horizontal brackets (19) at the front and rear ends. The motor support (23) is fixed to the left side of the upper horizontal bracket (19) and is used to house the stepper motor. The motor shaft end and the roller shaft end are connected to the gear (15) by the meshing of the roller chain (13). The eccentric push plate mechanism (D) includes a push plate (24), a movable crossbar (25), a base (26), a fixed vertical bar (27), a connecting rod (28), an eccentric wheel (29), and a servo motor I (30). The bottom of the eccentric push plate mechanism (D) is provided with a support, namely the base (26). The upper part of the eccentric push plate mechanism (D) is welded with a fixed vertical bar (27). A groove is provided at a set distance from the fixed vertical bar (27). The movable crossbar (25) welded to the push plate (24) moves horizontally along the groove. The eccentric rocker mechanism is provided with a push plate (24). The servo motor is used as a drive source to drive the eccentric wheel (29) to rotate. The positioning and pushing mechanism (E) includes a vertical track (31), a horizontal track (32), a servo motor II (33), a synchronous belt I (34), a servo motor III (35), a synchronous wheel I (36), a telescopic push plate (37), a push basket (38), a roller (39), a synchronous belt II (40), a synchronous wheel II (41), a ball bearing (42), a ball bearing frame (43), a telescopic arm (44), a two-arm connector (45), a lead screw (46), a stepper motor III (47), a bottom support plate (48), and a four-arm connector (49); the push basket (38) on the positioning and pushing mechanism (E) can move arbitrarily in three-dimensional space along the vertical, horizontal, and longitudinal directions; The positioning and pushing mechanism (E) includes a vertical track (31), a telescopic arm (44), a two-arm connector (45), a lead screw (46), a stepper motor III (47), a bottom support plate (48), and a four-arm connector (49) in the vertical direction. The bottom support plate (48) is welded to the vertical track (31) at a 90° angle. The telescopic arm (44), the two-arm connector (45), the lead screw (46), the stepper motor III (47), and the four-arm connector (49) together form a telescopic unit. The stepper motor III (47) is built into the vertical track (31). The upper and lower telescopic arms (44) in a telescopic unit are connected by the two-arm connector (45). The telescopic unit is connected by the four-arm connector (49). The stepper motor III (47) is connected to the lead screw (46) to drive the telescopic arm (44) to open and close and to move in the vertical direction. The positioning and pushing mechanism (E) includes a horizontal track (32), a servo motor II (33), a synchronous belt I (34), a synchronous pulley I (36), a telescopic push plate (37), a push basket (38), ball bearings (42), and a ball bearing frame (43) in the horizontal direction. A ball bearing (42) slide is provided on the horizontal track (32). The horizontal track (32) has a groove in the middle. The push basket (38) is connected to the synchronous belt I (34). The push basket (38) is welded to the ball bearing frame (43). A ball bearing (42) slide is provided under the bracket (17). The ball bearing (42) slide cooperates with the ball bearings (42). The positioning and pushing mechanism (E) is configured such that a push-in basket (38) is fixed on the synchronous belt I (34), and the two ends of the horizontal rail (32) are connected to the vertical telescopic mechanism by bolts for the push-in basket (38) to perform two-dimensional planar motion. The longitudinal parts of the positioning and pushing mechanism (E) include a servo motor III (35), a telescopic push plate (37), a push-in basket (38), a roller (39), a synchronous belt II (40), and a synchronous wheel II (41). The push-in basket (38) is provided with two layers of slides on the left side. The upper slide is fixed with the synchronous belt II (40) and the synchronous wheel II (41), and the lower slide is the slide of the roller (39).

2. The intelligent and convenient express sorting device based on RFID technology according to claim 1, characterized in that, The scanning and identification mechanism (B) includes an RFID radio frequency reader (9), a light curtain sensor (10), a vertical beam (11), and a horizontal beam I (12). The horizontal beam and the vertical beam are connected by welding to form a rectangular frame. The RFID radio frequency reader (9) is fixed on the top of the frame. The RFID radio frequency reader (9) is used to scan package information and transmit the information to the main control board, which corresponds to the code of the express cabinet (F). The scanning and identification mechanism (B) has fixed light curtain sensors (10) on both sides for detecting the volume and size of the express parcel.

3. The intelligent and convenient express sorting device based on RFID technology according to claim 1, characterized in that, The express cabinet (F) includes a cabinet door (50), a cabinet body (51), and an elastic lock (52); the express cabinet (F) is connected to a positioning and pushing device, the cabinet body (51) of the express cabinet (F) is set against the wall, and the cabinet door (50) and the elastic lock (52) are combined.

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