A narrow band sorting system capable of sorting both small and large items simultaneously
By designing a single-item separation zone and a small-item processing bypass for the narrow-band sorting system, the problem of low sorting efficiency for large and small packages in existing technologies has been solved, realizing highly efficient and automated mixed sorting and closed-loop processes, reducing costs and space requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN SOURCE TECH CO LTD
- Filing Date
- 2026-06-12
- Publication Date
- 2026-07-14
Smart Images
Figure CN122377752A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of narrowband sorting technology, specifically to a narrowband sorting system capable of simultaneously sorting items of different sizes. Background Technology
[0002] In the field of logistics sorting, there are many types of packages, typically including large packages that are bulky and heavy (such as single items like beds and furniture) and small packages that may contain multiple independent smaller items (such as envelopes, document bags, etc.). Existing sorting systems are often designed for a single type of package: large packages are sorted using specialized narrow-belt sorters or cross-belt sorters, while small packages are handled separately using circular chutes or small cross-belt sorters.
[0003] If large and small items need to be sorted simultaneously in the same area, two independent sorting systems are usually required. This not only results in high equipment investment costs but, more importantly, occupies a significant amount of space, leading to a sharp increase in site rental costs. Even with a few systems attempting to handle mixed processing on the same conveyor line, problems such as jams, mis-picking, or low efficiency often arise due to differences in the physical characteristics of large and small items (such as size, weight, and barcode location). Furthermore, for small packages containing multiple independent sub-items, existing systems cannot automatically complete the integrated process of "unpacking → single-item scanning → destination-based packing → secondary sorting," often requiring additional manual handling, which severely impacts the level of sorting automation and overall efficiency. Therefore, there is an urgent need for a narrow-strip sorting system that can simultaneously sort large and small items, has a compact structure, and a high degree of automation. Summary of the Invention
[0004] The purpose of this invention is to provide a narrow-band sorting system capable of simultaneously sorting items of different sizes, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a narrow-strip sorting system capable of simultaneously sorting items of different sizes, comprising: Along the conveying direction, a conveyor line, a single-item separation area, an information identification area, a narrow-strip sorter, and a large-item sorting area are set up in sequence. The narrow-band sorting machine is used to sort packages; In addition, a small item processing bypass line is set downstream of the information identification area, the small item processing bypass line including a small item package supply area, a small item supply area, a small item collection area and a return package area connected in sequence; The single-item separation area is used to organize large and small packages in the incoming materials into single-item queues. The information recognition area is used to identify the package's identity and size information; The large item sorting area is used to sort large packages according to identity information; The small parcel processing bypass is used to receive incoming materials identified as small parcels, wherein: The small parcel supply area is used to receive small parcels and allow for manual unpacking. The small parts supply area is used for scanning small parts after unpacking; The return packaging area is used to receive express bags full of small items transported by the lifting intelligent vehicle, and then transport them back to the upstream of the information identification area through the return path, so that the secondary packages can be sorted by the large item sorting area.
[0006] Furthermore, the single-piece separation area and information identification area are set on the conveyor line. The single-piece separation area includes a centering module, a vision module, a separation module, and an electronic control module. The separation module is fixedly connected to the centering module along the conveying direction. The vision module is fixedly installed on the outside of the separation module. The electronic control module is set on the outside of the centering module and the vision module.
[0007] Incoming materials, a mix of large and small packages, enter the conveyor line through the inlet in the lower right corner of the system. The materials first reach the single-item separation area. This area, arranged sequentially along the conveyor direction, includes a separation module, a centering module, and a vision module, all controlled by an electronic control module. When a package enters the separation module, it uses differential speed or a mechanical prying mechanism to separate stacked, side-by-side, or tightly packed packages, creating a sequentially spaced queue of single items. Subsequently, the packages enter the centering module, which gathers each package towards the center of the conveyor line, ensuring that the package is within the camera's optimal field of view for subsequent identification. The vision module collects the package's position and orientation information in real time, feeding it back to the electronic control module to dynamically adjust the separation and centering actions.
[0008] After being processed in the single-item separation area, all packages are now in a single, centered, and evenly spaced state, and continue to move forward along the conveyor direction.
[0009] Furthermore, the information identification area along the conveying direction includes a six-sided scanning area and an RFID identification area. The six-sided scanning area includes a dynamic scale, a frame, a vision system and a control system set on the frame. The dynamic scale is set on the inside of the frame. The RFID identification area is used to read RFID chip information on the package. The dynamic scale is used to weigh the package; The vision system is used for measuring the volume of packages, identifying barcodes, and storing panoramic images.
[0010] In the six-sided scanning area, the package first passes through a dynamic scale to measure its weight in real time. Then, the package enters a dark box consisting of a frame and a vision system, equipped with supplementary lighting. Multiple cameras in the vision system simultaneously scan the barcode or QR code on the package's surface from six directions: top, bottom, left, right, front, and back. Simultaneously, stereo vision measures the package's length, width, and height, and captures panoramic images for archiving. The control system coordinates camera triggering, image processing, and data fusion to extract the package's tracking number, origin, destination, and other identifying information. If the barcode on the package's surface is damaged or missing, the system records an anomaly.
[0011] The package then enters the RFID identification area, which is equipped with RFID reader antennas to read information from the RFID chips affixed or embedded in the package. The RFID chip stores data such as the package's unique identifier, type (large / small), and whether it has undergone secondary processing. The system compares and merges the information obtained from the six-sided scanning area and the RFID identification area to ultimately determine the package's identity, size, and sorting type.
[0012] Furthermore, the narrow strip sorting machine includes a cabinet, a track, and multiple narrow strip trolleys. One end of the conveyor line is connected to the cabinet, and a track is provided inside the cabinet. Narrow strip trolleys that are evenly distributed are movably connected to the inside of the track. A permanent magnet synchronous linear motor is fixedly connected to the inside of the cabinet. The narrow-band trolley includes a body, a narrow belt, electric rollers, a travel axle, side guide wheels, a driver, a junction box, a secondary electrode plate, a current collector arm, and a speed detection plate. Electric rollers are rotatably connected to both ends of the inner side of the body. The narrow belt is drively connected to the outer sides of the two sets of electric rollers. A driver is fixedly connected to the bottom of the body, driving one set of electric rollers to rotate. A secondary electrode plate, junction box, current collector arm, and speed detection plate are fixedly connected to the bottom of the body. The secondary electrode plate corresponds to a permanent magnet synchronous linear motor. Travel axles and side guide wheels are rotatably connected to both ends of the body, and the travel axles and side guide wheels roll on the inner side of the track.
[0013] If the information identification area determines that the size of the current package is larger than a preset threshold (i.e., it belongs to a large package), or if the RFID information indicates that it is a large item, the system marks the package as a "large item". The package continues to be conveyed along the main line and enters the narrow belt sorting machine. The narrow belt sorting machine includes a cabinet, a track, and multiple narrow belt trolleys that circulate along the track. A permanent magnet synchronous linear motor is fixed in the cabinet, which interacts with the secondary plate at the bottom of the narrow belt trolley to drive the trolley to move along the track. The specific structure of each narrow belt trolley is as follows: electric rollers are rotatably connected to both ends of the inner side of the trolley, and narrow belts are driven to the outer sides of the two electric rollers; a driver is fixed at the bottom of the trolley to drive the rotation of one side of the electric roller, thereby driving the narrow belt to move laterally (perpendicular to the conveying direction); a junction box, a current collector arm, and a speed detection plate are also fixed at the bottom of the trolley; a traveling wheel axle and a side guide wheel are rotatably connected to both ends of the trolley, which roll inside the track to ensure the smooth operation of the trolley.
[0014] When the narrow-belt trolley carrying large packages moves to the designated large-item sorting area (either area 1 or area 2), the drive unit rotates the electric rollers, and the narrow belt moves laterally to unload the large packages into the corresponding sorting window or chute. Large-item sorting areas 1 and 2 are located on opposite sides of the narrow-belt sorter, used for sorting packages destined in different directions. Additionally, a large-item loading area is located near area 2, used to directly load sorted large packages onto the trolley for shipment. If a large package has abnormal information or is not identified, it will be transported to the abnormal window in the large-item sorting area for further processing.
[0015] Furthermore, the large item sorting area includes a large item sorting area one and a large item sorting area two. The large item sorting area one and the large item sorting area two are respectively located on opposite sides of the narrow belt sorting machine. The large item sorting area one is adjacent to the small item packaging area. A large item ready-to-pack area is set on one side of the narrow belt sorting machine and is adjacent to the large item sorting area two.
[0016] If the information identification area determines that the size of the current package is not greater than a preset threshold, and the RFID information indicates "small package" (i.e., a package containing multiple independent small items), and it is also identified that the package is entering the system for the first time (without secondary marking), then the package is marked as "small item to be unpacked". The system does not send it to the large item sorting area of the narrow belt sorter, but instead transfers it via a conveyor branch to the small item processing sideline located downstream of the information identification area and next to the narrow belt sorter.
[0017] The small item handling bypass includes, in sequence, the small item supply area, the small item collection area, and the return area. The specific work steps are as follows: Package feeding and manual unpacking: Small packages first enter the small package feeding area, where they are removed manually or by an automated mechanism. The outer packaging is then opened in this area to remove all the individual small items inside. The unpacked small items (such as individual envelopes, small boxes, etc.) are placed on the conveyor line in the small package feeding area.
[0018] Item Scanning: In the small item supply area, operators or automated loading equipment place each individual small item onto the supply conveyor belt one by one, scanning the barcode or RFID tag on each item before or during placement to obtain its final destination information. The supply area then sequentially transports the scanned small items to the small item collection area.
[0019] Furthermore, the small package collection area includes a small package buffer mechanism, a lifting intelligent trolley, a linear component one, a courier bag supply area, a linear component two, a pushing component, a rotating suction cup, a crossbar, and a weighing platform. A uniformly distributed small package buffer mechanism is installed on one side of the narrow-band sorting machine. A linear component one is located below the small package buffer mechanism, and the linear component one is used to drive the small package buffer mechanism. A weighing platform is located near the lower part of the side wall of the narrow-band sorting machine. A linear component two is located below the small package buffer mechanism. A pushing component and a rotating suction cup are fixedly installed at the output end of the linear component two and on the side of the weighing platform opposite to the linear component two. A courier bag supply area is located below the small package buffer mechanism. A lifting intelligent trolley is located between the courier bag supply area and the weighing platform.
[0020] Furthermore, the small component buffer mechanism includes a roller conveyor belt, a T-shaped slider, and a guide rail. The output end of the linear assembly is fixedly connected to the roller conveyor belt, the outer side of the head of the roller conveyor belt is fixedly connected to the T-shaped slider, the outer side of the T-shaped slider is slidably connected to the guide rail, and the guide rail is fixedly connected to the cabinet.
[0021] Furthermore, the express bag supply area includes a support platform and express bags. The support platform is provided on the lower side of the roller conveyor belt, and express bags are stacked on the support platform. The pushing assembly includes a pushing plate, a cylinder, a fixed plate, and guide rods. A cylinder is fixedly connected to one side of the fixed plate, and a pushing plate is fixedly connected to the output end of the cylinder. Guide rods are fixedly connected to the four corners of the pushing plate, and the guide rods slide inside the fixed plate. The rotating suction cup includes a mounting platform, a motor, a rotating shaft, a fixing frame, and suction cups. The mounting platform is fixedly connected to the side of the push plate away from the fixing plate. The motor is fixedly connected to the upper side of the mounting platform. The rotating shaft is fixedly connected to the output end of the motor. The fixing frame is fixedly connected to the outer side of the rotating shaft. The head of the fixing frame is fixedly mounted with evenly distributed suction cups. A crossbar is fixedly installed on the bracket at the second location of the linear assembly.
[0022] Furthermore, both linear assembly one and linear assembly two include a linear drive. The linear drive includes a second motor, pulleys, a belt, a track housing, a lead screw, and a moving block. Two sets of pulleys are provided on one side of the second motor. The output end of the second motor is fixedly connected to one set of the pulleys. A belt is driven to the outer sides of the two sets of pulleys. A housing is rotatably connected to the outer sides of the two sets of pulleys. The housing is fixedly connected to the second motor, and a track housing is also fixedly installed on the housing. A lead screw is rotatably connected to the inner side of the track housing. The other set of pulleys is fixedly connected to the lead screw. A moving block is threaded to the outer side of the lead screw, and the moving block slides on the inner side of the track housing.
[0023] The system has a pre-set destination list. When the first small package destined for location A arrives, the linear assembly two in the small package collection area is activated, driving the push assembly and rotating suction cup fixedly installed at its output end to move above the carrier platform in the express bag supply area. Multiple empty express bags are stacked on the carrier platform.
[0024] The rotating suction cup includes a mounting platform, a motor, a rotating shaft, a mounting bracket, and multiple suction cups. The suction cups press down to adhere to the topmost courier bag, while the motor drives the rotating shaft to rotate, flipping or moving the bag to the opening station. Simultaneously, a pushing component on the other side works in conjunction with the rotating suction cups, using the suction cups to adhere to the other side of the bag and open the bag opening.
[0025] After the bag opening is opened, the narrow belt trolley sorts the small packages into the package according to their destination. When the package is full, the linear component is activated, which pushes the T-shaped slider on the roller conveyor belt to slide on the guide rail, thereby aligning the head of the roller conveyor belt with the cabinet, so that subsequent small packages can be temporarily stored on the roller conveyor belt.
[0026] Once a courier bag is filled with small packages destined for location A, the rotating suction cup and pushing component release the bag opening, and a horizontal bar pushes the full bag onto a lifting intelligent cart. The lifting intelligent cart can adjust its height to transfer the full bag to the return area. If any abnormal small packages are found during the collection process and their destination cannot be identified, they will be discharged from the abnormal small package outlet in the small package collection area.
[0027] Return Package and Secondary Identification: The return package area receives full parcel bags (i.e., secondary parcels) from the small parcel collection area. All small items inside these secondary parcels are destined for the same destination, and their outer packaging has corresponding destination barcodes and RFID tags affixed or attached. The exit of the return package area is connected to the upstream of the information identification area via a return path.
[0028] Furthermore, the linear component two, along with the push component and rotating suction cup fixedly installed at its output end, is used to transport the stacked express bags on the support platform to the weighing platform in sequence. The push component and rotating suction cup at the weighing platform work together to pull the opening of the express bag to collect the small express packages after unpacking and sorting. Once full, the express bag is pushed to the lifting intelligent trolley via a crossbar, and the lifting intelligent trolley transports it to the return area.
[0029] After the secondary package re-enters the main line, it passes through the single-item separation area again (at this point, due to the small number of packages and their single-item nature, the separation area only serves a conveying function), the six-sided scanning area, and the RFID identification area. The system identifies that the package's RFID information contains a "secondary processing" tag, and its size has increased to that of a large item (its volume increases after containing multiple smaller items), therefore it is treated as a large item package. This secondary package is then conveyed to the narrow-belt sorting machine, where the narrow-belt cart sorts it to the corresponding window in either Large Item Sorting Area 1 or Large Item Sorting Area 2 according to its final destination. Finally, it is loaded onto a truck through the Large Item Immediate Loading Area and sent to its destination.
[0030] Compared with the prior art, the present invention provides a narrow strip sorting system capable of simultaneously sorting items of different sizes, which has the following advantages: 1. This narrow-belt sorting system, which can sort large and small items simultaneously, sets up a single-item separation area, an information identification area, and a narrow-belt sorter sequentially on the same conveyor line, and cooperates with a small-item processing bypass line to achieve mixed sorting of large and small packages in the same system. There is no need to build separate large-item sorting lines and small-item sorting lines, which significantly reduces equipment investment costs and site occupancy.
[0031] 2. This narrow-band sorting system, capable of sorting both large and small items simultaneously, sequentially unpacks small packages via a small-item processing bypass, performs single-item scanning, and then groups them into secondary packages according to their destination. These secondary packages are then returned to the upstream information identification area via a return path, allowing them to be sorted as large items by the narrow-band sorting machine. This forms a complete closed-loop process, reducing manual intervention and secondary handling, and significantly improving the level of sorting automation and overall operational efficiency.
[0032] 3. This narrow-band sorting system, capable of sorting both large and small items simultaneously, integrates barcode / size recognition from the six-sided scanning area with chip reading from the RFID area in the information identification zone. This allows for accurate determination of package type (large / small) and processing status (first / secondary). Combined with dynamic weighing, visual panoramic image storage, and abnormal exits in the small package collection and sorting areas, it ensures that packages with abnormal information or those that have not been identified are processed in a timely manner, enhancing the stability and fault tolerance of the system. Attached Figure Description
[0033] Figure 1 This is a schematic diagram of the planar structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the narrow-band sorting machine and the small-item collection area of the present invention; Figure 3 This is a three-dimensional structural diagram of the small item packaging area of the present invention; Figure 4 This is a three-dimensional structural diagram of the narrow-band sorting machine of the present invention; Figure 5 This is a three-dimensional structural diagram of the small component buffer mechanism of the present invention; Figure 6 This is a three-dimensional structural diagram of the lifting intelligent vehicle of the present invention; Figure 7 This is a three-dimensional structural diagram of the weighing platform of the present invention; Figure 8 This is a three-dimensional structural diagram of the linear component two of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle; Figure 10 This is a three-dimensional structural diagram of the linear drive of the present invention; Figure 11 This is a partial planar structural diagram of the narrow-band sorting machine of the present invention; Figure 12 This is a schematic diagram of the planar structure of the narrowband vehicle of the present invention; Figure 13 This is a three-dimensional structural diagram of the single-piece separation area of the present invention; Figure 14 This is a bottom view of the single-piece separation area of the present invention; Figure 15 This is a front view of the single-piece separation area of the present invention; Figure 16 This is a top view of the single-piece separation area of the present invention; Figure 17 This is a three-dimensional structural diagram of the six-sided scanning area of the present invention; Figure 18 This is a side view of the six-sided scanning area of the present invention; Figure 19 This is a top view of the six-sided scanning area of the present invention.
[0034] In the diagram: 1. Large item loading area; 2. Large item sorting area one; 3. Narrow belt sorting machine; 31. Cabinet; 32. Narrow belt trolley; 321. Body; 322. Narrow belt; 323. Electric roller; 324. Walking wheel axle; 325. Side guide wheel; 326. Driver; 327. Junction box; 328. Secondary electrode plate; 329. Collector arm; 3210. Speed detection board; 33. Track; 4. Large item sorting area two; 5. Small item packaging area; 51. Small item buffer mechanism; 511. Roller conveyor belt; 512. T-shaped slider; 513. Guide rail; 52. Lifting intelligent trolley; 53. Linear assembly one; 54. Courier bag supply area; 541. Carrying platform; 542. Courier bag; 55. Linear assembly two; 56. Pushing assembly; 561. Pushing plate; 562. Pneumatic... 563. Cylinder; 564. Fixing plate; 565. Guide rod; 57. Rotary suction cup; 571. Mounting platform; 572. Motor 1; 573. Rotating shaft; 574. Fixing frame; 575. Suction cup; 58. Crossbar; 59. Weighing platform; 6. Small package supply area; 7. Return package area; 8. Small package supply area; 9. RFID identification area; 10. Six-sided scanning area; 101. Dynamic scale; 102. Frame; 103. Vision system; 104. Control system; 11. Conveyor line; 12. Single item separation area; 121. Centering module; 122. Vision module; 123. Separation module; 124. Electrical control module; 13. Linear drive; 131. Motor 2; 132. Pulley; 133. Belt; 134. Track housing; 135. Lead screw; 136. Moving block. Detailed Implementation
[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0036] Example
[0037] Please see Figures 1-19 A narrow-strip sorting system capable of simultaneously sorting items of different sizes includes: Along the conveying direction, a conveyor line 11, a single-item separation area 12, an information identification area, a narrow-strip sorting machine 3, and a large-item sorting area are set up in sequence; Narrow-band sorter 3 is used for sorting packages; In addition, a small item processing bypass line is set downstream of the information identification area. The small item processing bypass line includes a small item package supply area 6, a small item supply area 8, a small item collection area 5, and a return package area 7 connected in sequence. The single-item separation zone 12 is used to organize large and small packages in the incoming materials into single-item queues; The information identification area is used to identify the package's identity and size information; The large item sorting area is used to sort large packages based on identification information; The small parcel handling bypass is used to receive incoming materials identified as small parcels, wherein: Small parcel supply area 6 is used to receive small parcels and allow manual unpacking; Small item supply area 8 is used for scanning small items after unpacking; The return package area 7 is used to receive express bags full of small items transported by the lifting intelligent trolley 52, and then transport them back to the upstream of the information identification area through the return path, so that the secondary packages are sorted by the large item sorting area.
[0038] Furthermore, the single-piece separation area 12 and the information identification area are set on the conveyor line 11. The single-piece separation area 12 includes a centering module 121, a vision module 122, a separation module 123, and an electrical control module 124. The separation module 123 is fixedly connected to the centering module 121 along the conveying direction. The vision module 122 is fixedly installed on the outside of the separation module 123. The electrical control module 124 is set on the outside of the centering module 121 and the vision module 122.
[0039] Incoming materials, a mixture of large and small packages, enter conveyor line 11 through the inlet in the lower right corner of the system. The materials first reach the single-item separation area 12. This area, along the conveying direction, is equipped with a separation module 123, a centering module 121, and a vision module 122, all controlled by an electronic control module 124. When a package enters the separation module 123, the module uses a differential or mechanical prying mechanism to separate stacked, side-by-side, or tightly packed packages, forming a sequentially spaced queue of single items. Subsequently, the packages enter the centering module 121, which gathers each package towards the center of conveyor line 11, ensuring that the package is within the camera's optimal field of view for subsequent identification. The vision module 122 collects the package's position and orientation information in real time and feeds it back to the electronic control module 124 to dynamically adjust the separation and centering actions.
[0040] After being processed in the single-item separation zone 12, all packages are now in a single, centered, and evenly spaced state, and continue to move forward along the conveying direction.
[0041] Furthermore, the information identification area along the conveying direction includes a six-sided scanning area 10 and an RFID identification area 9. The six-sided scanning area 10 includes a dynamic scale 101, a frame 102, a vision system 103 set on the frame 102, and a control system 104. The dynamic scale 101 is set on the inside of the frame 102. The RFID identification area 9 is used to read the RFID chip information on the package. Dynamic scale 101 is used to weigh packages; The vision system 103 is used for volume measurement, barcode recognition, and panoramic image storage of packages.
[0042] In the six-sided scanning area 10, the package first passes through a dynamic scale 101 to measure its weight in real time. The package then enters a dark box consisting of a frame 102 and a vision system 103, equipped with supplementary lighting. Multiple cameras in the vision system 103 simultaneously scan the barcode or QR code on the package surface from six directions: top, bottom, left, right, front, and back. Simultaneously, stereo vision is used to measure the package's length, width, and height, and panoramic images are captured for archiving. The control system 104 coordinates camera triggering, image processing, and data fusion to extract the package's tracking number, origin, destination, and other identifying information. If the barcode on the package surface is damaged or missing, the system records an anomaly.
[0043] The package then enters RFID identification zone 9, which is equipped with an RFID reader antenna to read information from the RFID chip affixed or embedded in the package. The RFID chip stores data such as the package's unique identifier, type (large / small), and whether it has undergone secondary processing. The system compares and merges the information obtained from the six-sided scanning zone 10 and RFID identification zone 9 to ultimately determine the package's identity, size, and sorting type.
[0044] Furthermore, the narrow strip sorting machine 3 includes a cabinet 31, a track 33, and multiple narrow strip trolleys 32. One end of the conveyor line 11 is connected to the cabinet 31. The track 33 is set inside the cabinet 31. The narrow strip trolleys 32 are movably connected inside the track 33. A permanent magnet synchronous linear motor is fixedly connected inside the cabinet 31. The narrow-band trolley 32 includes a body 321, a narrow belt 322, an electric roller 323, a travel axle 324, a side guide wheel 325, a driver 326, a junction box 327, a secondary plate 328, a current collector arm 329, and a speed detection plate 3210. The inner ends of the body 321 are rotatably connected to the electric roller 323, and the outer sides of the two sets of electric rollers 323 are driven by the narrow belt 322. The bottom of the body 321 is fixedly connected to the driver 326, which is used to drive the rotation of one set of electric rollers 323. The bottom of the body 321 is fixedly connected to the secondary plate 328, the junction box 327, the current collector arm 329, and the speed detection plate 3210. The secondary plate 328 corresponds to a permanent magnet synchronous linear motor. The two ends of the body 321 are rotatably connected to the travel axle 324 and the side guide wheel 325, which roll on the inner side of the track 33.
[0045] If the information identification area determines that the size of the current package is larger than a preset threshold (i.e., it belongs to a large package), or if the RFID information indicates that it is a large item, the system marks the package as a "large item". The package continues to be conveyed along the main line and enters the narrow belt sorting machine 3. The narrow belt sorting machine 3 includes a cabinet 31, a track 33, and multiple narrow belt trolleys 32 that circulate along the track. A permanent magnet synchronous linear motor is fixed inside the cabinet 31, which interacts with the secondary pole plate 328 at the bottom of the narrow belt trolley 32 to drive the trolley to move along the track. The specific structure of each narrow-belt trolley 32 is as follows: electric rollers 323 are rotatably connected to both ends of the inner side of the body 321, and narrow belts 322 are driven to the outer sides of the two electric rollers 323; a driver 326 is fixed at the bottom of the body 321 to drive the electric roller on one side to rotate, thereby driving the narrow belt 322 to move laterally (perpendicular to the conveying direction); a junction box 327, a collector arm 329, and a speed detection plate 3210 are also fixed at the bottom of the body 321; a traveling wheel axle 324 and a side guide wheel 325 are rotatably connected to both ends of the body 321, and the two roll inside the track 33 to ensure the smooth operation of the trolley.
[0046] When the narrow-belt trolley 32 carrying large packages moves to the top of the corresponding destination's large-item sorting area 2 or large-item sorting area 4, the driver 326 controls the electric roller 323 to rotate, and the narrow belt 322 moves laterally to unload the large packages into the corresponding sorting window or chute. Large-item sorting area 2 and large-item sorting area 4 are respectively located on opposite sides of the narrow-belt sorter 3 for sorting destinations in different directions. In addition, the system also has a large-item loading area 1 on the side near large-item sorting area 4 for directly loading sorted large packages onto the trolley for shipment. If the information of a large package is abnormal or it is not identified, it will be transported to the abnormal window in the large-item sorting area for further processing.
[0047] Furthermore, the large item sorting area includes large item sorting area 1 2 and large item sorting area 2 4. Large item sorting area 1 2 and large item sorting area 2 4 are respectively located on opposite sides of the narrow belt sorting machine 3. Large item sorting area 1 2 is adjacent to the small item packaging area 5. A large item ready-to-pack area 1 is set on one side of the narrow belt sorting machine 3, and it is adjacent to large item sorting area 2 4.
[0048] If the information identification area determines that the size of the current package is not greater than a preset threshold, and the RFID information indicates "small package" (i.e., a package containing multiple independent small items), and it is also identified that the package is entering the system for the first time (without secondary marking), then the package is marked as "small item to be unpacked". The system does not send it to the large item sorting area of the narrow belt sorter 3, but instead transfers it to the small item processing sideline located downstream of the information identification area and next to the narrow belt sorter 3 via a conveyor branch.
[0049] The small item handling bypass includes, in sequence, the small item supply area 6, the small item supply area 8, the small item collection area 5, and the return area 7. The specific work steps are as follows: Package feeding and manual unpacking: Small packages first enter the small package feeding area 6, where they are removed manually or automatically. The outer packaging is then opened in this area to remove all the individual small items inside. The unpacked small items (such as individual envelopes, small boxes, etc.) are placed on the conveyor line in the small package feeding area 8.
[0050] Item Scanning: In the small item supply area 8, operators or automated loading equipment place each individual small item onto the supply conveyor belt one by one, and scan the barcode or RFID tag on each small item before or during placement to obtain its final destination information. The supply area then sequentially transports the scanned small items to the small item collection area 5.
[0051] Furthermore, the small parcel collection area 5 includes a small parcel buffer mechanism 51, a lifting intelligent trolley 52, a linear component 1 53, a courier bag supply area 54, a linear component 2 55, a pushing component 56, a rotating suction cup 57, a crossbar 58, and a weighing platform 59. The small parcel buffer mechanism 51 is evenly distributed on one side of the narrow strip sorter 3. The linear component 1 53 is set on the lower side of the small parcel buffer mechanism 51. The linear component 1 53 is used to drive the small parcel buffer mechanism 51. The weighing platform 59 is set on the lower part of the side wall of the narrow strip sorter 3. The linear component 2 55 is set on the lower side of the small parcel buffer mechanism 51. The pushing component 56 and the rotating suction cup 57 are fixedly installed on the output end of the linear component 2 55 and the side of the weighing platform 59 opposite to the linear component 2 55. The courier bag supply area 54 is set on the lower side of the small parcel buffer mechanism 51. The lifting intelligent trolley 52 is set between the courier bag supply area 54 and the weighing platform 59.
[0052] Furthermore, the small component buffer mechanism 51 includes a roller conveyor belt 511, a T-shaped slider 512, and a guide rail 513. The output end of the linear assembly 53 is fixedly connected to the roller conveyor belt 511, the outer side of the head of the roller conveyor belt 511 is fixedly connected to the T-shaped slider 512, the outer side of the T-shaped slider 512 is slidably connected to the guide rail 513, and the guide rail 513 is fixedly connected to the cabinet 31.
[0053] Furthermore, the express bag supply area 54 includes a support platform 541 and express bags 542. The support platform 541 is provided on the lower side of the roller conveyor belt 511, and express bags 542 are stacked on the support platform 541. The pushing assembly 56 includes a pushing plate 561, a cylinder 562, a fixed plate 563, and a guide rod 564. The cylinder 562 is fixedly connected to one side of the fixed plate 563, and the pushing plate 561 is fixedly connected to the output end of the cylinder 562. The guide rod 564 is fixedly connected to each of the four corners of the pushing plate 561, and the guide rod 564 slides inside the fixed plate 563. The rotating suction cup 57 includes a mounting platform 571, a motor 572, a rotating shaft 573, a fixing frame 574, and suction cups 575. The mounting platform 571 is fixedly connected to the side of the push plate 561 away from the fixing plate 563. The motor 572 is fixedly connected to the upper side of the mounting platform 571. The rotating shaft 573 is fixedly connected to the output end of the motor 572. The fixing frame 574 is fixedly connected to the outer side of the rotating shaft 573. The head of the fixing frame 574 is fixedly mounted with evenly distributed suction cups 575. A crossbar 58 is fixedly installed on the bracket 574 at point 55 of the linear assembly.
[0054] Furthermore, both linear assembly 1 (53) and linear assembly 2 (55) include a linear drive 13. The linear drive 13 includes a motor 2 (131), pulleys 132, belts 133, a track housing 134, a lead screw 135, and a moving block 136. Two sets of pulleys 132 are provided on one side of the motor 2 (131). The output end of the motor 2 (131) is fixedly connected to one set of pulleys 132. The outer sides of the two sets of pulleys 132 are connected to the belts 133. The outer sides of the two sets of pulleys 132 are rotatably connected to the housing. The housing is fixedly connected to the motor 2 (131), and the track housing 134 is also fixedly installed on the housing. The inner side of the track housing 134 is rotatably connected to the lead screw 135. Another set of pulleys 132 is fixedly connected to the lead screw 135. The outer side of the lead screw 135 is threadedly connected to the moving block 136, which slides on the inner side of the track housing 134.
[0055] The system has a pre-set destination list. When the first small package destined for location A arrives, the linear assembly 55 of the small package collection area 5 is activated, which moves the push assembly 56 and the rotating suction cup 57 fixedly installed at its output end to the carrier platform 541 of the express bag supply area 54. Multiple empty express bags 542 are stacked on the carrier platform 541.
[0056] The rotating suction cup 57 includes a mounting platform 571, a motor 572, a rotating shaft 573, a fixing frame 574, and multiple suction cups 575. The suction cups 575 press down to adhere to the topmost courier bag 542. The motor 572 drives the rotating shaft 573 to rotate, flipping or moving the courier bag 542 to the opening station. Simultaneously, the pushing component 56 on the other side works in conjunction with the rotating suction cup 57, using the suction cups to adhere to the other side of the courier bag and open the bag opening.
[0057] After the bag opening is opened, the narrow belt trolley 32 sorts the small packages into the express bag 542 according to their destination. When the express bag 542 is full, the linear component 53 is activated, which pushes the T-shaped slider 512 on the roller conveyor belt 511 to slide on the guide rail 513, thereby connecting the head of the roller conveyor belt 511 with the cabinet 31, so that subsequent small packages can be temporarily stored on the roller conveyor belt 511.
[0058] Once a parcel bag 542 is filled with small items destined for location A, the rotating suction cup 57 and the pushing component 56 release the bag opening, and the crossbar 58 pushes the full bag onto the lifting intelligent trolley 52. The lifting intelligent trolley 52 can adjust its height to transfer the full bag to the return bag area 7. If any abnormal small items are found during the collection process and their destination cannot be identified, they will be discharged from the abnormal small item outlet in the small item collection area 5.
[0059] Return Package and Secondary Identification: Return package area 7 receives full express bags 542 (i.e., secondary packages) from small parcel collection area 5. All small items inside these secondary packages are destined for the same destination, and the outer packaging has corresponding destination barcodes and RFID tags affixed or attached. The exit of return package area 7 is connected to the upstream of the information identification area via a return path.
[0060] Furthermore, the linear component 55 and its output end are fixedly mounted with a push component 56 and a rotating suction cup 57 to transport the stacked express bags 542 on the support platform 541 to the weighing platform 59 in sequence. The push component 56 and the rotating suction cup 57 at the weighing platform 59 cooperate to pull the opening of the express bag 542 to collect the small express packages after unpacking and sorting. When the bag is full, it is pushed by the crossbar 58 to move the express bag 542 to the lifting intelligent trolley 52, which then transports it to the return area 7.
[0061] After the secondary package re-enters the main line, it passes through the single-item separation area 12 again (at this time, since the number of packages is small and they are single items, the separation area only serves as a conveyor), the six-sided scanning area 10, and the RFID identification area 9. The system identifies that the RFID information of the package contains a "secondary processing" mark, and its size has changed to that of a large item containing multiple smaller items, thus increasing its volume. Therefore, it is treated as a large item package. The secondary package is then conveyed to the narrow-belt sorting machine 3, where the narrow-belt cart 32 sorts it according to its final destination to the window corresponding to either the large item sorting area 1 2 or the large item sorting area 2 4. Finally, it is loaded onto a vehicle through the large item loading area 1 and sent to its destination.
[0062] The specific usage and function of this embodiment are as follows: I. Separation of incoming materials and individual pieces Incoming materials, a mixture of large and small packages, enter conveyor line 11 through the inlet in the lower right corner of the system. The materials first reach the single-item separation area 12. This area, along the conveying direction, is equipped with a separation module 123, a centering module 121, and a vision module 122, all controlled by an electronic control module 124. When a package enters the separation module 123, the module uses a differential or mechanical prying mechanism to separate stacked, side-by-side, or tightly packed packages, forming a sequentially spaced queue of single items. Subsequently, the packages enter the centering module 121, which gathers each package towards the center of conveyor line 11, ensuring that the package is within the camera's optimal field of view for subsequent identification. The vision module 122 collects the package's position and orientation information in real time and feeds it back to the electronic control module 124 to dynamically adjust the separation and centering actions.
[0063] After being processed in the single-item separation zone 12, all packages are now in a single, centered, and evenly spaced state, and continue to move forward along the conveying direction.
[0064] II. Information Recognition After leaving the single-item separation area 12, the package enters the information identification area. The information identification area includes a six-sided scanning area 10 and an RFID identification area 9 along the conveying direction.
[0065] In the six-sided scanning area 10, the package first passes through a dynamic scale 101 to measure its weight in real time. The package then enters a dark box consisting of a frame 102 and a vision system 103, equipped with supplementary lighting. Multiple cameras in the vision system 103 simultaneously scan the barcode or QR code on the package surface from six directions: top, bottom, left, right, front, and back. Simultaneously, stereo vision is used to measure the package's length, width, and height, and panoramic images are captured for archiving. The control system 104 coordinates camera triggering, image processing, and data fusion to extract the package's tracking number, origin, destination, and other identifying information. If the barcode on the package surface is damaged or missing, the system records an anomaly.
[0066] The package then enters RFID identification zone 9, which is equipped with an RFID reader antenna to read information from the RFID chip affixed or embedded in the package. The RFID chip can store data such as the package's unique identifier, type (large / small), and whether it has undergone secondary processing. The system compares and merges the information obtained from the six-sided scanning zone 10 and RFID identification zone 9 to ultimately determine the package's identity, size, and sorting type.
[0067] III. Direct sorting of large packages If the information identification area determines that the current package's size exceeds a preset threshold and thus belongs to the category of large packages, or if the RFID information indicates that it is a large item, the system marks the package as "large." The package continues to be conveyed along the main line and enters the narrow-belt sorting machine 3. The narrow-belt sorting machine 3 includes a cabinet 31, a track 33, and multiple narrow-belt trolleys 32 that circulate along the track. A permanent magnet synchronous linear motor is fixed inside the cabinet 31, which interacts with the secondary pole plate 328 at the bottom of the narrow-belt trolley 32 to drive the trolley to move along the track. The specific structure of each narrow-belt trolley 32 is as follows: electric rollers 323 are rotatably connected to both ends of the inner side of the body 321, and narrow belts 322 are driven to the outer sides of the two electric rollers 323; a driver 326 is fixed at the bottom of the body 321 to drive the electric roller on one side to rotate, thereby driving the narrow belt 322 to move laterally perpendicular to the conveying direction; a junction box 327, a collector arm 329, and a speed detection plate 3210 are also fixed at the bottom of the body 321; a traveling wheel axle 324 and a side guide wheel 325 are rotatably connected to both ends of the body 321, and the two roll inside the track 33 to ensure the smooth operation of the trolley.
[0068] When the narrow-belt trolley 32 carrying large packages moves to the top of the corresponding destination's large-item sorting area 2 or large-item sorting area 4, the driver 326 controls the electric roller 323 to rotate, and the narrow belt 322 moves laterally to unload the large packages into the corresponding sorting window or chute. Large-item sorting area 2 and large-item sorting area 4 are respectively located on opposite sides of the narrow-belt sorter 3 for sorting destinations in different directions. In addition, the system also has a large-item loading area 1 on the side near large-item sorting area 4 for directly loading sorted large packages onto the trolley for shipment. If the information of a large package is abnormal or it is not identified, it will be transported to the abnormal window in the large-item sorting area for further processing.
[0069] IV. Side-line handling process for small parcels If the information identification area determines that the size of the current package is not greater than a preset threshold, and the RFID information indicates "small package" (i.e., a package containing multiple independent small items), and it is also identified as a first-time entry into the system without secondary marking, then the package is marked as a "small item to be unpacked." The system does not send it to the large item sorting area of the narrow-belt sorter 3, but instead transfers it via a conveyor branch to the small item processing sideline located downstream of the information identification area and next to the narrow-belt sorter 3.
[0070] The small item handling bypass includes, in sequence, the small item supply area 6, the small item supply area 8, the small item collection area 5, and the return area 7. The specific work steps are as follows: Package feeding and manual unpacking: Small packages first enter the small package feeding area 6, where they are removed manually or by an automated mechanism. The outer packaging is then opened in this area to remove all the individual small items inside. The unpacked small items, such as individual envelopes and small boxes, are placed on the conveyor line in the small package feeding area 8.
[0071] Item Scanning: In the small item supply area 8, operators or automated loading equipment place each individual small item onto the supply conveyor belt one by one, and scan the barcode or RFID tag on each small item before or during placement to obtain its final destination information. The supply area then sequentially transports the scanned small items to the small item collection area 5.
[0072] Small parcel consolidation: Small parcel consolidation area 5 is responsible for grouping small parcels destined for the same destination into one express bag. Its internal working process is as follows: The system has a pre-set destination list. When the first small package destined for location A arrives, the linear assembly 55 of the small package collection area 5 is activated, which moves the push assembly 56 and the rotating suction cup 57 fixedly installed at its output end to the carrier platform 541 of the express bag supply area 54. Multiple empty express bags 542 are stacked on the carrier platform 541.
[0073] The rotating suction cup 57 includes a mounting platform 571, a motor 572, a rotating shaft 573, a fixing frame 574, and multiple suction cups 575. The suction cups 575 press down to adhere to the topmost courier bag 542. The motor 572 drives the rotating shaft 573 to rotate, flipping or moving the courier bag 542 to the opening station. Simultaneously, the pushing component 56 on the other side works in conjunction with the rotating suction cup 57, using the suction cups to adhere to the other side of the courier bag and open the bag opening.
[0074] After the bag opening is opened, the narrow belt trolley 32 sorts the small packages into the express bag 542 according to their destination. When the express bag 542 is full, the linear component 53 is activated, which pushes the T-shaped slider 512 on the roller conveyor belt 511 to slide on the guide rail 513, thereby connecting the head of the roller conveyor belt 511 with the cabinet 31, so that subsequent small packages can be temporarily stored on the roller conveyor belt 511.
[0075] Once a parcel bag 542 is filled with small items destined for location A, the rotating suction cup 57 and the pushing component 56 release the bag opening, and the crossbar 58 pushes the full bag onto the lifting intelligent trolley 52. The lifting intelligent trolley 52 can adjust its height to transfer the full bag to the return bag area 7. If any abnormal small items are found during the collection process and their destination cannot be identified, they will be discharged from the abnormal small item outlet in the small item collection area 5.
[0076] Return Package and Secondary Identification: Return package area 7 receives the already filled express bags 542, i.e., secondary packages, from small parcel collection area 5. All small items inside these secondary packages are destined for the same destination, and the outer packaging has corresponding destination barcodes and RFID tags affixed or attached. The exit of return package area 7 is connected to the upstream of the information identification area via a return path.
[0077] V. Sorting of Secondary Packages After the secondary package re-enters the main line, it passes through the single-item separation area 12 again. Since the number of packages is small and they are single items, the separation area only serves as a conveyor, the six-sided scanning area 10, and the RFID identification area 9. The system identifies that the package's RFID information contains a "secondary processing" mark, and its size has increased to that of a large item containing multiple smaller items, thus classifying it as a large package. This secondary package is then conveyed to the narrow-belt sorting machine 3, where the narrow-belt cart 32 sorts it according to its final destination to the corresponding window in either the large-item sorting area 2 or the large-item sorting area 4. Finally, it is loaded onto a truck through the large-item loading area 1 and sent to its destination.
[0078] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A narrow-strip sorting system capable of simultaneously sorting items of different sizes, characterized in that, include: Along the conveying direction, a conveyor line (11), a single-item separation area (12), an information identification area, a narrow-strip sorting machine (3), and a large-item sorting area are set up in sequence; The narrow-band sorting machine (3) is used to sort packages; the narrow-band sorting machine (3) includes a cabinet (31), a track (33) and multiple narrow-band carts (32); In addition, a small item processing bypass line is set downstream of the information identification area. The small item processing bypass line includes a small item package supply area (6), a small item supply area (8), a small item collection area (5), and a return package area (7) connected in sequence. The single-item separation area (12) is used to organize large and small packages in the incoming materials into single-item queues; The information recognition area is used to identify the package's identity and size information; The large item sorting area is used to sort large items according to identity information; the large item sorting area includes large item sorting area one (2) and large item sorting area two (4). The small parcel processing bypass is used to receive incoming materials identified as small parcels, wherein: The small package supply area (6) is used to receive small packages and allow manual unpacking; The small parts supply area (8) is used for scanning the small parts after unpacking; The small item collection area (5) includes a small item buffer mechanism (51), a lifting intelligent trolley (52), a linear component one (53), a courier bag supply area (54), a linear component two (55), a pushing component (56), a rotating suction cup (57), a crossbar (58), and a weighing platform (59), which are used to collect the unpacked and sorted small items into courier bags (542) to form secondary packages; The return package area (7) is used to receive the express bags full of small items transported by the lifting intelligent vehicle (52), and transport them back to the upstream of the information identification area through the return path, so that the secondary package is sorted by the large item sorting area.
2. The narrow-strip sorting system capable of simultaneously sorting items of different sizes according to claim 1, characterized in that: The single-piece separation area (12) and the information identification area are set on the conveyor line (11). The single-piece separation area (12) includes a centering module (121), a vision module (122), a separation module (123), and an electrical control module (124). The centering module (121) is fixedly connected to the separation module (123) along the conveying direction. The vision module (122) is fixedly installed on the outside of the separation module (123). The electrical control module (124) is set on the outside of the centering module (121) and the vision module (122).
3. A narrow-strip sorting system capable of simultaneously sorting items of different sizes according to claim 1, characterized in that: The information identification area includes a six-sided scanning area (10) and an RFID identification area (9) along the conveying direction. The six-sided scanning area (10) includes a dynamic scale (101), a frame (102), a vision system (103) and a control system (104) set on the frame (102). The dynamic scale (101) is set on the inside of the frame (102). The RFID identification area (9) is used to read the RFID chip information on the package. The dynamic scale (101) is used to weigh the package; The vision system (103) is used for volume measurement, barcode recognition, and panoramic image storage of packages.
4. A narrow-strip sorting system capable of simultaneously sorting items of different sizes according to claim 1, characterized in that: One end of the conveyor line (11) is connected to a cabinet (31), and a track (33) is provided on the inner side of the cabinet (31). Narrow-band trolleys (32) are movably connected to the inner side of the track (33); a permanent magnet synchronous linear motor is fixedly connected to the inner side of the cabinet (31). The narrow-band trolley (32) includes a body (321), a narrow belt (322), electric rollers (323), a travel axle (324), side guide wheels (325), a driver (326), a junction box (327), a secondary plate (328), a current collector arm (329), and a speed detection plate (3210). The inner ends of the body (321) are rotatably connected to the electric rollers (323), and the outer sides of the two sets of electric rollers (323) are driven by the narrow belt (322). The bottom of the body (321) is fixedly connected to the driver. (326) The driver (326) is used to drive a set of electric rollers (323) to rotate. The bottom of the vehicle body (321) is fixedly connected to a secondary plate (328), a junction box (327), a collector arm (329), and a speed detection plate (3210). The secondary plate (328) corresponds to a permanent magnet synchronous linear motor. Both ends of the vehicle body (321) are rotatably connected to a walking wheel axle (324) and a side guide wheel (325). The walking wheel axle (324) and the side guide wheel (325) roll on the inner side of the track (33).
5. A narrow-strip sorting system capable of simultaneously sorting items of different sizes according to claim 1, characterized in that: The large item sorting area 1 (2) and the large item sorting area 2 (4) are respectively located on opposite sides of the narrow belt sorting machine (3). The large item sorting area 1 (2) is adjacent to the small item collection area (5). The narrow belt sorting machine (3) has a large item ready-to-pack area (1) on one side, which is adjacent to the large item sorting area 2 (4).
6. A narrow-strip sorting system capable of simultaneously sorting items of different sizes according to claim 1, characterized in that: A small item buffer mechanism (51) with even distribution is installed on one side of the narrow strip sorting machine (3). A linear component one (53) is provided on the lower side of the small item buffer mechanism (51). The linear component one (53) is used to drive the small item buffer mechanism (51). A weighing platform (59) is provided on the lower part of the side wall of the narrow strip sorting machine (3). A linear component two (55) is provided on the lower side of the small item buffer mechanism (51). A push component (56) and a rotating suction cup (57) are fixedly installed on the output end of the linear component two (55) and on the side of the weighing platform (59) opposite to the linear component two (55). A courier bag supply area (54) is provided on the lower side of the small item buffer mechanism (51). A lifting intelligent trolley (52) is provided between the courier bag supply area (54) and the weighing platform (59).
7. A narrow-strip sorting system capable of simultaneously sorting items of different sizes according to claim 6, characterized in that: The small component buffer mechanism (51) includes a roller conveyor belt (511), a T-shaped slider (512), and a guide rail (513). The output end of the linear assembly (53) is fixedly connected to the roller conveyor belt (511). The outer side of the head of the roller conveyor belt (511) is fixedly connected to the T-shaped slider (512). The outer side of the T-shaped slider (512) is slidably connected to the guide rail (513). The guide rail (513) is fixedly connected to the cabinet (31).
8. A narrow-strip sorting system capable of simultaneously sorting items of different sizes according to claim 7, characterized in that: The express bag supply area (54) includes a support platform (541) and express bags (542). The support platform (541) is provided on the lower side of the roller conveyor belt (511), and express bags (542) are stacked on the support platform (541). The pushing assembly (56) includes a pushing plate (561), a cylinder (562), a fixed plate (563), and a guide rod (564). The cylinder (562) is fixedly connected to one side of the fixed plate (563), and the pushing plate (561) is fixedly connected to the output end of the cylinder (562). The guide rod (564) is fixedly connected to each of the four corners of the pushing plate (561), and the guide rod (564) slides inside the fixed plate (563). The rotating suction cup (57) includes a mounting platform (571), a motor (572), a rotating shaft (573), a fixing frame (574), and suction cups (575). The mounting platform (571) is fixedly connected to the side of the push plate (561) away from the fixing plate (563). The motor (572) is fixedly connected to the upper side of the mounting platform (571). The rotating shaft (573) is fixedly connected to the output end of the motor (572). The fixing frame (574) is fixedly connected to the outer side of the rotating shaft (573). The head of the fixing frame (574) is fixedly mounted with evenly distributed suction cups (575). A crossbar (58) is fixedly installed on the fixing bracket (574) at the second linear component (55).
9. A narrow-strip sorting system capable of simultaneously sorting large and small items according to claim 8, characterized in that: Both linear assembly one (53) and linear assembly two (55) include a linear drive (13). The linear drive (13) includes a second motor (131), a pulley (132), a belt (133), a track housing (134), a lead screw (135), and a moving block (136). Two sets of pulleys (132) are provided on one side of the second motor (131). The output end of the second motor (131) is fixedly connected to one set of the pulleys (132), and the outer sides of the two sets of pulleys (132) are connected by a transmission. There is a belt (133), and the outer sides of the two sets of belt pulleys (132) are rotatably connected to a housing. The housing is fixedly connected to the second motor (131), and a track housing (134) is also fixedly installed on the housing. The inner side of the track housing (134) is rotatably connected to a lead screw (135). The other set of belt pulleys (132) is fixedly connected to the lead screw (135). The outer side of the lead screw (135) is threaded with a moving block (136), and the moving block (136) slides on the inner side of the track housing (134).
10. A narrow-strip sorting system capable of simultaneously sorting items of different sizes according to claim 9, characterized in that: The linear component 2 (55) and its output end are fixedly installed with a push component (56) and a rotating suction cup (57) to transport the stacked express bags (542) on the carrier platform (541) to the weighing platform (59) in sequence. The push component (56) and the rotating suction cup (57) at the weighing platform (59) work together to pull the opening of the express bag (542) to open the bag for collecting small express packages after unpacking and sorting. When the bag is full, the crossbar (58) pushes the express bag (542) to the lifting intelligent trolley (52), which then transports it to the return area (7).