Centrally-arranged parcel supplying and sorting system and method

Abstract

A centrally-arranged parcel supplying and sorting system. The system comprises a fixed framework (10) and a feeding and parcel supplying apparatus (20) which are fixedly mounted, at least one sorting trolley (30) movably mounted on the fixed framework, a plurality of material falling chutes (41) mounted on the fixed framework, and material receiving apparatuses (50) arranged on outer sides of the fixed framework, wherein the sorting trolley can move between the feeding and parcel supplying apparatus and the material falling chutes in a reciprocating manner; each material receiving apparatus is provided with a plurality of material receiving frames (51) which correspond to the material falling chutes on a one-to-one basis; a feeding and parcel supplying station (101) is provided in the fixed framework; the feeding and parcel supplying apparatus is arranged at the feeding and parcel supplying station of the fixed framework; and the fixed framework is provided with the material falling chutes and the material receiving apparatuses on different sides of the feeding and parcel supplying apparatus. Further provided is a centrally-arranged parcel supplying and sorting method. After a centrally-arranged parcel supplying structure is used, the moving distance of the sorting trolley in an extension direction of the fixed framework during single sorting can be shortened, such that the time required for single sorting is shortened; and the material falling chutes and the number of the material receiving apparatuses can be relatively increased in terms of number, thereby improving the sorting efficiency.

Description

Mid-positioned parcel feeding sorting system and method TECHNICAL FIELD

[0001] The present application relates to the technical field of sorting of goods, express items and the like, and in particular to a mid-positioned parcel feeding sorting system and a mid-positioned parcel feeding sorting method using the same. BACKGROUND

[0002] An express item automatic sorting system can automatically transport each of a plurality of express items to a corresponding pocket, continuously and automatically sorts a large number of express items, has high sorting efficiency and low sorting error rate, and is widely used in logistics distribution centers.

[0003] Generally, the express item automatic sorting system includes a fixed frame and a feeding mechanism, a movable frame movably installed along the length direction of the fixed frame, a sorting trolley movably installed along the height direction of the fixed frame, and a receiving mechanism arranged outside the fixed frame along the width direction of the fixed frame. The fixed frame is provided with a plurality of pockets (i.e. a material falling chute), and the receiving mechanism is provided with a plurality of receiving frames corresponding to the plurality of pockets. When the express item automatic sorting system is in operation, the sorting personnel only need to place a plurality of express items on the feeding mechanism, and the sorting trolley moves to the feeding mechanism to pick up the express items. The sorting trolley moves to the corresponding pocket according to the information on the express items, and the sorting trolley moves out the express items, which fall into the corresponding receiving frame through the pocket. Through the reciprocating movement of the sorting trolley between the feeding mechanism and the pocket, the automatic sorting of a plurality of express items is realized.

[0004] The existing express item automatic sorting system adopts a terminal feeding structure, i.e. the feeding mechanism is arranged at the end of the length direction of the fixed frame, such as a multi-axis double-trolley automatic sorting device disclosed in Chinese Patent Application No. 202211171868.9, an XYZ three-axis stereoscopic automatic sorting equipment disclosed in Chinese Utility Model Patent No. 202221541022.5, and a high-efficiency double-trolley automatic sorting device disclosed in Chinese Utility Model Patent No. 202320994516.7. Based on the existing terminal feeding structure, after the sorting trolley transfers the express items to the pocket, the movable frame drives the sorting trolley to move to the end of the fixed frame along the length direction of the fixed frame, which causes the movable frame and the sorting trolley to move a long distance along the length direction of the fixed frame, which is not conducive to further improving the sorting efficiency. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a mid-positioned parcel feeding sorting system and method, which has higher sorting efficiency.

[0006] To achieve the above object, the application provides a middle-located bag feeding and sorting system, which comprises a fixed frame and a bag feeding device, at least one sorting trolley movably installed on the fixed frame, a plurality of material falling chutes installed on the fixed frame, and a material receiving device arranged on the outer side of the fixed frame. The sorting trolley can reciprocate between the bag feeding device and the material falling chute. The material receiving device has a plurality of material receiving frames corresponding to the material falling chutes. The fixed frame is provided with a bag feeding station. The bag feeding device is arranged at the bag feeding station of the fixed frame. The fixed frame is provided with the material falling chute and the material receiving device on different sides of the bag feeding device. The bag feeding station and the bag feeding device are arranged at a non-terminal position in the extension direction of the fixed frame, so that the fixed frame is provided with the material falling chute and the material receiving device on different sides of the bag feeding station and the bag feeding device. The middle-located bag feeding structure, or the non-terminal bag feeding structure, can shorten the movement distance of the sorting trolley in the extension direction of the fixed frame during single sorting, thereby shortening the required time for single sorting, and can increase the number of material falling chutes and material receiving devices, thereby improving the sorting efficiency.

[0007] As a preferred middle-located bag feeding and sorting system, the fixed frame is in a linear shape, and the feeding direction of the bag feeding device is perpendicular to the extension direction of the fixed frame. The bag feeding station and the bag feeding device are arranged at the middle position of the fixed frame in the extension direction of the fixed frame. The middle-located bag feeding and sorting system is provided with a sorting subsystem on both sides of the bag feeding station and the bag feeding device in a direction perpendicular to the feeding direction of the bag feeding device. Each sorting subsystem comprises part of the fixed frame, the material falling chute, and the material receiving device.

[0008] As a preferred middle-located bag feeding and sorting system, the middle-located bag feeding and sorting system is a single-car structure, and one sorting trolley is arranged. The sorting trolley can move in the extension direction of the fixed frame in the area on both sides of the bag feeding station.

[0009] As a preferred middle-located bag feeding and sorting system, the middle-located bag feeding and sorting system is a double-car structure, and two sorting trolleys are arranged. Both of the two sorting trolleys can move in the extension direction of the fixed frame in the area on both sides of the bag feeding station.

[0010] As the preferred mode of the middle-feeding bag sorting system, the middle-feeding bag sorting system is a four-car structure, and the sorting cars are configured with four cars, two of which are arranged in the area on one side of the feeding bag station along the extension direction of the fixed frame and can move in the area, and the other two are arranged in the area on the other side of the feeding bag station along the extension direction of the fixed frame and can move in the area.

[0011] As the preferred mode of the middle-feeding bag sorting system, each of the sorting cars is movably installed on the fixed frame through a set of sorting transmission mechanisms; each set of sorting transmission mechanisms includes a translation guide rail fixed to the fixed frame, a translation driving source, a translation moving frame in sliding cooperation with the translation guide rail, a longitudinal moving driving source, and a longitudinal moving guide rail fixed to the translation moving frame, the translation guide rail extends straight along the extension direction of the fixed frame, and the two ends extend to the two ends of the fixed frame respectively, the longitudinal moving guide rail extends straight up and down along the height direction of the fixed frame, the translation driving source is in transmission connection with the translation moving frame, the sorting car is in sliding cooperation with the longitudinal moving guide rail, and the longitudinal moving driving source is in transmission connection with the sorting car; the feeding bag station is distributed on the moving path of the translation moving frame along the translation guide rail.

[0012] As the preferred mode of the middle-feeding bag sorting system, the translation driving source is a translation driving motor fixed to the fixed frame, and the longitudinal moving driving source is a longitudinal moving driving motor fixed to the translation moving frame; the translation driving motor is connected to the translation moving frame through a first synchronous belt transmission assembly, the first synchronous belt transmission assembly includes a first driving pulley and a first driven pulley rotatably supported in the fixed frame, and a first synchronous belt connected to the outer periphery of the first driving pulley and the first driven pulley, the translation driving motor is connected to the first driving pulley, and the first synchronous belt is fixedly connected to the translation moving frame; the longitudinal moving driving motor is connected to the sorting car through a second synchronous belt transmission assembly, the second synchronous belt transmission assembly includes a second driving pulley and a second driven pulley rotatably supported in the translation moving frame, and a second synchronous belt connected to the outer periphery of the second driving pulley and the second driven pulley, the longitudinal moving driving motor is connected to the second driving pulley, and the second synchronous belt is fixedly connected to the sorting car; the extension paths of the first synchronous belt and the second synchronous belt both cover the feeding bag station.

[0013] As the preferred embodiment of the middle-supply bag sorting system, when the middle-supply bag sorting system is a four-car structure, two translation moving frames are distributed on both sides of the loading supply bag station along the extension direction of the fixed frame and on one side of the fixed frame along the width direction of the fixed frame and share the same root translation guide rail, and the remaining two translation moving frames are distributed on both sides of the loading supply bag station along the extension direction of the fixed frame and on the other side of the fixed frame along the width direction of the fixed frame and share the same root translation guide rail, and the two sets of first synchronous belt transmission assemblies connected to the two translation moving frames sharing the same root translation guide rail are staggered in the width direction of the fixed frame.

[0014] As the preferred embodiment of the middle-supply bag sorting system, the fixed frame is provided with a corner on its extension path, and the loading supply bag station and the loading supply bag equipment are both arranged at the corner of the fixed frame along the extension direction of the fixed frame.

[0015] As the preferred embodiment of the middle-supply bag sorting system, the fixed frame is L-shaped; along the loading direction of the loading supply bag equipment, the fixed frame is provided with a sorting subsystem on the opposite side of the loading supply bag equipment; along the direction perpendicular to the loading direction of the loading supply bag equipment, the fixed frame is provided with a sorting subsystem on one side of the loading supply bag equipment; each sorting subsystem comprises part of the fixed frame, a material falling chute, and a material receiving equipment.

[0016] As the preferred embodiment of the middle-supply bag sorting system, the fixed frame is T-shaped; along the loading direction of the loading supply bag equipment, the fixed frame is provided with a sorting subsystem on the opposite side of the loading supply bag equipment; along the direction perpendicular to the loading direction of the loading supply bag equipment, the fixed frame is provided with a sorting subsystem on both sides of the loading supply bag equipment; each sorting subsystem comprises part of the fixed frame, a material falling chute, and a material receiving equipment.

[0017] As the preferred embodiment of the middle-supply bag sorting system, in each sorting subsystem, the fixed frame is provided with a material falling mechanism on both sides perpendicular to its extension direction and forms a car movement empty area allowing the movement of a sorting car between the two sets of material falling mechanisms; each set of material falling mechanisms comprises a plurality of chute bottom plates arranged in parallel and fixed to the fixed frame, each chute bottom plate is fixed with a plurality of chute baffles arranged in parallel along the extension direction of the fixed frame, and the material falling chute is formed between adjacent two chute baffles and chute bottom plates; each chute bottom plate is fixed with a flexible blocking piece extending towards the car movement empty area at the inner edge close to the car movement empty area.

[0018] As the preferred embodiment of the middle-supply bag sorting system, the flexible blocking piece comprises a plurality of flexible strips arranged in parallel along the extension direction of the fixed frame.

[0019] As the preferred of the middle feeding and sorting system, the feeding and sorting device comprises a fixed feeding and sorting rack and a plurality of feeding and sorting belt conveying mechanisms mounted on the feeding and sorting rack; each feeding and sorting belt conveying mechanism comprises a pair of feeding rollers rotatably mounted on the feeding and sorting rack and a feeding and sorting belt connected to the pair of feeding rollers; the plurality of feeding and sorting belt conveying mechanisms are sequentially connected along the conveying direction of the feeding and sorting belt conveying mechanisms, and the feeding and sorting driving sources of the plurality of feeding and sorting belt conveying mechanisms are independent of each other.

[0020] As the preferred of the middle feeding and sorting system, the plurality of feeding and sorting belt conveying mechanisms are distributed in a high-to-low stepped manner along the conveying direction of the feeding and sorting belt conveying mechanisms.

[0021] As the preferred of the middle feeding and sorting system, the feeding and sorting device further comprises an optical grating sensor arranged outside each feeding and sorting belt conveying mechanism and fixed to the feeding and sorting rack, and a detection opening part is formed on the feeding and sorting rack to expose the optical grating sensor.

[0022] As the preferred of the middle feeding and sorting system, a triangular region is formed between two adjacent feeding and sorting belt conveying mechanisms, and the feeding rollers are small-diameter rollers with a diameter of not greater than 40 mm.

[0023] As the preferred of the middle feeding and sorting system, the sorting trolley comprises a trolley frame movably mounted on a fixed frame and a material moving belt conveying mechanism mounted on the trolley frame; the material moving belt conveying mechanism has a sorting conveying belt, and a plurality of baffle strips are arranged on the outer surface of the sorting conveying belt in parallel along the length direction of the sorting conveying belt.

[0024] As the preferred of the middle feeding and sorting system, the sorting trolley further comprises a metal sheet fixed to one side of one of the baffle strips and a proximity switch fixed to the trolley frame, and the proximity switch can sense the metal sheet.

[0025] As the preferred of the middle feeding and sorting system, the sorting trolley further comprises a photoelectric sensor and a reflector both fixed to the trolley frame, the photoelectric sensor and the reflector are arranged in a facing manner in the up-down direction, the sorting conveying belt passes between the photoelectric sensor and the reflector, and a light-transmitting hole is formed in the sorting conveying belt, the light-transmitting hole can move to a position opposite to the reflector.

[0026] As the preferred of the middle feeding and sorting system, the sorting trolley further comprises a pair of side limiting stop pieces and a pair of main limiting stop pieces both mounted on the trolley frame, a first opening and a second opening are formed between the sorting conveying belt and the pair of side limiting stop pieces, the first opening and the second opening are arranged at both ends of the sorting conveying belt along the conveying direction of the sorting conveying belt, and the main limiting stop pieces are movably mounted on the trolley frame to close or open the first opening and the second opening.

[0027] As a preferred embodiment of the middle-provision package sorting system, each of the main limiting stoppers comprises two limiting gates rotatably mounted on the vehicle frame, the sorting trolley is provided with a stopper driving source at each limiting gate in transmission connection with the limiting gate, and the stopper driving source is fixed on the vehicle frame.

[0028] As a preferred embodiment of the middle-provision package sorting system, the sorting trolley further comprises a lifting driving source and a lifting transmission unit mounted on the vehicle frame, and a pair of the main limiting stoppers are rotatably mounted on the vehicle frame, the lifting driving source is in transmission connection with the pair of main limiting stoppers through the lifting transmission unit and drives the pair of main limiting stoppers to synchronously lift.

[0029] The application further provides a middle-provision package sorting method using the middle-provision package sorting system as described above, and the middle-provision package sorting method comprises the following steps:

[0030] S1, sequentially placing a plurality of sorted objects on the feeding-provision device, and the feeding-provision device conveying the sorted objects towards the fixed frame;

[0031] S2, moving the sorting trolley to the feeding-provision device;

[0032] S3, the sorting trolley receiving the sorted objects output by the feeding-provision device;

[0033] S4, the sorting trolley moving to the unloading chute corresponding to the sorted objects on the sorting trolley;

[0034] S5, the sorting trolley unloading the sorted objects thereon, and the sorted objects falling into the receiving frame corresponding to the unloading chute through the unloading chute;

[0035] S6, the sorting trolley returning to the feeding-provision device;

[0036] S7, repeating steps S3 to S6;

[0037] In the step S4 executed multiple times, the sorting trolley can move towards the unloading chutes distributed on different sides of the feeding-provision device.

[0038] The utility model discloses still provide a kind of sorting mechanism, including translation guide rail, first component and second component;The first component includes first trolley and first translation drive unit, and the first trolley is movably installed in the translation guide rail by the first translation drive unit;The second component includes second trolley and second translation drive unit, and the second trolley is movably installed in the translation guide rail by the second translation drive unit;The first trolley and second trolley can move along the translation guide rail of same root.The two trolleys move along the same translation guide rail, which greatly improves the sorting efficiency;Two translation drive units for driving the movement of the two trolleys are respectively arranged on both sides of the translation guide rail, which can avoid mutual interference.The overall structure is simple and stable, and has strong load-bearing capacity.

[0039] As a preferred sorting mechanism, the first component includes a first translation drive source, the first translation drive unit includes a first translation driving wheel, a first translation driven wheel and a first translation transmission member arranged between the first translation driving wheel and the first translation driven wheel, the first translation driving wheel rotates under the drive of the first translation drive source, and the first trolley is connected with the first translation transmission member;The second component includes a second translation drive source, the second translation drive unit includes a second translation driving wheel, a second translation driven wheel and a second translation transmission member arranged between the second translation driving wheel and the second translation driven wheel, the second translation driving wheel rotates under the drive of the second translation drive source, and the second trolley is connected with the second translation transmission member.

[0040] As a preferred sorting mechanism, the first translation transmission member and the second translation transmission member are respectively a rack, a rope, a belt or a chain.

[0041] As a preferred sorting mechanism, the translation guide rail is a horizontal guide rail, the wheel axes of the first translation driving wheel, the second translation driving wheel, the first translation driven wheel and the second translation driven wheel all extend vertically, and the first translation drive unit and the second translation drive unit are respectively arranged on both sides of the translation guide rail in the horizontal width direction of the translation guide rail.

[0042] As a preferred sorting mechanism, in the extension direction of the translation guide rail, the middle part of the translation guide rail is provided with a picking station for picking the first trolley and the second trolley, and the two ends of the translation guide rail in its extension direction are respectively a first guide rail end and a second guide rail end;The first translation driving wheel and the first translation driven wheel are respectively arranged at one end of the first guide rail end and the picking station away from the first guide rail end, the second translation driving wheel and the second translation driven wheel are respectively arranged at one end of the second guide rail end and the picking station away from the second guide rail end, and the movement stroke of the first trolley and the second trolley has an overlapping section at the picking station.

[0043] As a preferred sorting mechanism, the first assembly further comprises a first translational moving frame connected with a first translational transmission unit, the first trolley is connected with the first translational moving frame through a first lifting transmission unit, and the first lifting transmission unit is used to drive the first trolley to make lifting movement; the second assembly further comprises a second translational moving frame connected with a second translational transmission unit, the second trolley is connected with the second translational moving frame through a second lifting transmission unit, and the second lifting transmission unit is used to drive the second trolley to make lifting movement.

[0044] As a preferred sorting mechanism, the first assembly comprises a first lifting driving source, the first lifting transmission unit comprises a first lifting driving wheel arranged on the first translational moving frame, a first lifting driven wheel, and a first lifting transmission member arranged between the first lifting driving wheel and the first lifting driven wheel, the first lifting transmission member rotates under the driving of the first lifting driving source, and the first trolley is connected with the first lifting transmission member; the second assembly comprises a second lifting driving source, the second lifting transmission unit comprises a second lifting driving wheel arranged on the second translational moving frame, a second lifting driven wheel, and a second lifting transmission member arranged between the second lifting driving wheel and the second lifting driven wheel, the second lifting transmission member rotates under the driving of the second lifting driving source, and the second trolley is connected with the second lifting transmission member.

[0045] As a preferred sorting mechanism, the first trolley and the second trolley each comprise a trolley frame, two sorting rollers are arranged on the trolley frame, and a sorting conveying belt is arranged between the two sorting rollers.

[0046] As a preferred sorting mechanism, the sorting roller rotates under the driving of a conveying driving source, or the sorting roller is an electric roller.

[0047] As a preferred sorting mechanism, a plurality of blocking strips are arranged on the outer surface of the sorting conveying belt at intervals.

[0048] The application also provides a feeding and bagging device, which comprises a feeding and bagging rack and a plurality of feeding belt conveying mechanisms mounted on the feeding and bagging rack. Each feeding belt conveying mechanism comprises a bagging driving source mounted on the feeding and bagging rack, a driving roller and a driven roller rotatably mounted on the feeding and bagging rack, and a bagging conveying belt connected to the outer periphery of the driving roller and the driven roller. The bagging driving source is in transmission connection with the driving roller, and the bagging driving sources of the plurality of feeding belt conveying mechanisms are independent of each other. In the conveying direction of the bagging conveying belt, the plurality of feeding belt conveying mechanisms are sequentially connected and arranged in a stepped manner from high to low, and adjacent two feeding belt conveying mechanisms are arranged in close proximity. The plurality of feeding belt conveying mechanisms in the application are driven by independent bagging driving sources, so that the conveying speed of the bagging conveying belt of each feeding belt conveying mechanism is independently controlled, thereby better controlling the buffering of the sorted objects on the plurality of feeding belt conveying mechanisms and avoiding excessive accumulation of the sorted objects at the front end of the feeding and bagging device, thereby improving the efficiency of the device. Meanwhile, the plurality of feeding belt conveying mechanisms are arranged in a stepped manner, and the heights of the plurality of feeding belt conveying mechanisms decrease from back to front, that is, adjacent two feeding belt conveying mechanisms are vertically staggered, which can better enable the adjacent two feeding belt conveying mechanisms to be arranged in close proximity, reduce the gap between the adjacent two feeding belt conveying mechanisms, and avoid dropping of the objects. In addition, the stepped structure of the plurality of feeding belt conveying mechanisms from high to low can also avoid the jumping phenomenon of light sorted objects.

[0049] As a preferred feeding and bagging device, each feeding belt conveying mechanism further comprises a detection unit mounted on the feeding and bagging rack, which is used to detect whether there is an object passing through the bagging conveying belt of the feeding belt conveying mechanism.

[0050] As a preferred feeding and bagging device, the feeding and bagging rack comprises a base frame and a pair of base baffles fixed on the upper end of the base frame. The pair of base baffles are oppositely distributed on both sides of the bagging conveying belt of the plurality of feeding belt conveying mechanisms in a direction perpendicular to the conveying direction of the bagging conveying belt and are higher than the bagging conveying belt of the plurality of feeding belt conveying mechanisms. The detection unit comprises a grating sensor fixed on the outer side of the base baffle and a detection opening portion opened in the base baffle, and the detection opening portion allows the grating sensor to be exposed.

[0051] As a preferred feeding and bagging device, in each feeding belt conveying mechanism, the bottom of the detection opening portion is flush with the top of the bagging conveying belt.

[0052] As a preferred feeding and bagging device, a head end of the base baffle is provided with a material taking avoidance area in the conveying direction of the bagging conveying belt.

[0053] As the preferred of the feeding and bagging device, the bagging driving source is a motor, and is distributed in the opposite position of the driving roller. Each feeding belt conveying mechanism further comprises a transmission unit, and the bagging driving source is connected with the driving roller through the transmission unit.

[0054] As the preferred of the feeding and bagging device, the transmission unit comprises a third driving pulley fixed on the motor shaft of the bagging driving source, a third driven pulley fixed on the end of the driving roller, and a transmission belt connected on the outer periphery of the third driving pulley and the third driven pulley.

[0055] As the preferred of the feeding and bagging device, each feeding belt conveying mechanism further comprises an adjusting unit, the adjusting unit comprises an adjusting long slot opened in the feeding and bagging rack, an adjusting plate fixed on the feeding and bagging rack, and an adjusting screw rotatably arranged in the adjusting plate, the adjusting long slot and the adjusting screw extend straight along the conveying direction of the bagging conveying belt; the driven roller comprises a roller shaft and a roller rotatably arranged on the outer periphery of the roller shaft, and the two ends of the roller shaft are clamped in the adjusting long slot and are threadedly connected with the adjusting screw.

[0056] The application further provides a feeding and bagging device, which comprises a feeding and bagging rack provided with a conveying component mounting area, and a plurality of feeding belt conveying mechanisms assembled in the conveying component mounting area, the plurality of feeding belt conveying mechanisms are arranged in front of and behind each other along the conveying direction thereof, each feeding belt conveying mechanism comprises a bagging driving source, a pair of bagging rollers arranged side by side in front of and behind each other along the conveying direction thereof, and a bagging conveying belt connected on the outer periphery of the pair of bagging rollers, the bagging rollers are rotatably supported in the feeding and bagging rack and are drivingly connected with the bagging driving source, a triangular area is formed between two adjacent feeding belt conveying mechanisms in front of and behind each other, and the bagging rollers are small-diameter rollers with a diameter of not more than 40 mm. By adopting a pair of bagging rollers to support the upper end of the bagging conveying belt, the bagging conveying belt has a conveying plane for horizontally conveying the sorted objects forward; in particular, the bagging rollers are small-diameter rollers with a diameter of not more than 40 mm, so that the size of the triangular area formed between the two adjacent feeding belt conveying mechanisms in front of and behind each other can be greatly reduced, the connection between the two adjacent feeding belt conveying mechanisms is more gentle, the sorted objects with a small size are effectively prevented from being clamped in the triangular area, the sorted objects conveyed forward by the latter feeding belt conveying mechanism can be smoothly transferred to the former feeding belt conveying mechanism, the probability of dropping is greatly reduced, and the reliability and accuracy of the sorting of the sorted objects are finally ensured.

[0057] As the preferred of the feeding and bagging device, the diameter of the bagging roller is 28-32 mm.

[0058] As the preferred feeding and bagging device, the bagging driving source is a motor, each of the feeding belt conveying mechanisms further comprises a transmission roller rotatably supported in the feeding and bagging rack, a first pulley fixed on the motor shaft of the bagging driving source, a second pulley fixed on the transmission roller, and a pulley transmission synchronous belt connected between the first pulley and the second pulley, the transmission roller is in contact with the inner circumferential surface of the bagging conveying belt and is distributed below the pair of bagging rollers, and the diameter of the transmission roller is greater than the diameter of the bagging roller.

[0059] As the preferred feeding and bagging device, a motor mounting area is formed between one of the pair of bagging rollers and the transmission roller on the outer circumferential side of the bagging conveying belt, and the bagging driving source is located in the motor mounting area and fixed to the feeding and bagging rack.

[0060] As the preferred feeding and bagging device, each of the feeding belt conveying mechanisms further comprises a tensioning and adjusting roller and a tensioning and adjusting assembly, the tensioning and adjusting roller comprises a roller shaft part and a tensioning cylinder part rotatably assembled on the roller shaft part, the tensioning cylinder part is in contact with the outer circumferential surface of the bagging conveying belt, and the roller shaft part is movably installed on the feeding and bagging rack through the tensioning and adjusting assembly.

[0061] As the preferred feeding and bagging device, the outer circumferential surface of the bagging conveying belt is provided with at least one circumferentially extending limiting protrusion; when there are a plurality of limiting protrusions, the plurality of limiting protrusions are arranged side by side in the left and right directions perpendicular to the conveying direction of the feeding belt conveying mechanism.

[0062] As the preferred feeding and bagging device, the feeding and bagging rack comprises a plurality of conveying assembly mounting areas arranged side by side in the left and right directions perpendicular to the conveying direction of the feeding belt conveying mechanism, and a plurality of feeding belt conveying mechanisms are arranged in each of the conveying assembly mounting areas.

[0063] The application also provides a sorting trolley, which comprises a trolley frame, two parallel sorting rollers arranged on the trolley frame, and a sorting conveying belt arranged between the two sorting rollers. The trolley frame further comprises two side limiting stop pieces extending along the length direction of the sorting conveying belt, and the two side limiting stop pieces are arranged on the two sides of the sorting conveying belt along the width direction of the sorting conveying belt and form a first opening and a second opening, respectively, between the two ends of the sorting conveying belt. The sorting trolley further comprises a main limiting stop piece for blocking the materials placed on the sorting conveying belt from passing through the first opening and / or the second opening. By arranging the main limiting stop piece, the sorting trolley with the function of preventing the materials from falling is provided, and the materials will not fall from the sorting trolley on the basis of normally receiving and delivering the materials, thereby greatly improving the sorting efficiency.

[0064] As a preferred embodiment of the sorting trolley, the main limiting stopper is arranged on the sorting conveyor belt. At this time, the main limiting stopper comprises a plurality of limiting bars arranged at intervals along the length direction of the sorting conveyor belt.

[0065] As a preferred embodiment of the sorting trolley, the main limiting stopper is arranged on the trolley frame. At this time, the main limiting stopper comprises two blocking units arranged at the first opening and the second opening respectively, and each blocking unit comprises a limiting gate and a stopper driving source for driving the limiting gate to move close to or away from the first opening or the second opening.

[0066] As a preferred embodiment of the sorting trolley, the stopper driving source is a linear displacement stopper driving source or a rotary stopper driving source.

[0067] As a preferred embodiment of the sorting trolley, each blocking unit comprises two limiting gates and two stopper driving sources.

[0068] As a preferred embodiment of the sorting trolley, a plurality of walking wheels are arranged on the trolley frame.

[0069] The application further provides a sorting trolley, which comprises a trolley frame, a pair of sorting rollers rotatably arranged on the trolley frame, a sorting conveyor belt connected to the outer periphery of the pair of sorting rollers, a pair of side limiting stoppers distributed on both sides of the sorting conveyor belt in a direction perpendicular to the conveying direction of the sorting conveyor belt, a pair of main limiting stoppers distributed at both ends of the sorting conveyor belt in the conveying direction of the sorting conveyor belt, and a stopper lifting driving source and a stopper lifting transmission unit both arranged on the trolley frame. The pair of side limiting stoppers and the pair of main limiting stoppers are both arranged on the trolley frame, and the pair of main limiting stoppers are both arranged on the trolley frame in a lifting manner. The stopper lifting driving source is in transmission connection with the pair of main limiting stoppers through the stopper lifting transmission unit and drives the pair of main limiting stoppers to lift synchronously. The application uses one stopper lifting driving source to drive two main limiting stoppers to lift simultaneously and synchronously, thereby reducing the cost. In addition, the movement mode of the main limiting stopper in the application is lifting, i.e. translation in the up-down direction, which reduces the requirement for the space above the main limiting stopper and makes the sorting trolley better assembled in the sorting system.

[0070] As a preferred embodiment of the sorting trolley, the stopper lifting driving source is an electric motor, the stopper lifting transmission unit comprises a first transmission assembly in transmission connection with the motor shaft of the stopper lifting driving source and a second transmission assembly in transmission connection with each main limiting stopper, and the two second transmission assemblies are both in transmission connection with the first transmission assembly.

[0071] As the preferred sorting trolley, the second transmission assembly comprises a transmission rotating shaft rotatably supported in the trolley frame; the first transmission assembly is distributed on the outer side of a side limiting stopper, the first transmission assembly comprises a fourth driving belt pulley fixed on the motor shaft of the stopper lifting driving source, a fourth driven belt pulley fixed on the transmission rotating shaft of each second transmission assembly, and a third synchronous belt connected to the outer periphery of the fourth driving belt pulley and the two fourth driven belt pulleys.

[0072] As the preferred sorting trolley, the first transmission assembly further comprises a motor mounting bracket, a tensioning adjusting slot opened in the motor mounting bracket, and a tensioning adjusting bolt threaded in the tensioning adjusting slot, the stopper lifting driving source is fixed to the motor mounting bracket, the motor mounting bracket is locked on the trolley frame through the tensioning adjusting bolt, and the tensioning adjusting slot is a waist-shaped slot.

[0073] As the preferred sorting trolley, the first transmission assembly further comprises two idlers rotatably mounted on the trolley frame, the two idlers are distributed on the two sides of the fourth driving belt pulley and abut against the outer side of the third synchronous belt.

[0074] As the preferred sorting trolley, each second transmission assembly comprises two transmission lead screws distributed at the two ends of the main limiting stopper, a transmission nut connected to the transmission lead screws, a fifth driven belt pulley fixed on each transmission lead screw, and a fourth synchronous belt connected to the outer periphery of the two fifth driven belt pulleys in the second transmission assembly, the two transmission lead screws are vertically arranged and rotatably mounted on the trolley frame, one of the transmission lead screws is connected to the first transmission assembly, and the transmission nut is connected to the main limiting stopper.

[0075] As the preferred sorting trolley, a matching gap is provided between the transmission nut and the main limiting stopper, a connecting bolt is fixed on the transmission nut, and the connecting bolt is assembled in the main limiting stopper through a thrust bearing.

[0076] As the preferred sorting trolley, the side limiting stopper and the main limiting stopper are both plate components; along the distribution direction of the pair of side limiting stoppers, the main limiting stopper covers the area between the pair of side limiting stoppers.

[0077] The application further provides a material falling mechanism, which comprises a chute bottom plate fixed on the frame, the chute bottom plate comprising a first side close to the sorting trolley and a second side away from the sorting trolley, the height of the first side being greater than the height of the second side, and a flexible blocking piece arranged on the first side. The flexible blocking piece arranged on the first side close to the sorting trolley shortens the distance between the chute bottom plate and the sorting trolley, thereby preventing the falling of the material and ensuring the efficient operation of the sorting device. Meanwhile, the flexible blocking piece itself has a certain bearing capacity, so that when the sorted material falls on the flexible blocking piece, the bearing capacity of the flexible blocking piece can ensure the sorted material to enter the chute bottom plate, thereby ensuring the smooth completion of the material falling.

[0078] As a preferred material falling mechanism, the height of the sorting trolley is greater than the height of the first side when the sorting trolley needs to unload the material carried by itself onto the chute bottom plate.

[0079] As a preferred material falling mechanism, a plurality of chute blocking plates are arranged on the upper surface of the chute bottom plate, and the adjacent two chute blocking plates and the chute bottom plate form a material falling chute, and the sorting trolley unloads the material carried by itself into the designated material falling chute.

[0080] As a preferred material falling mechanism, the flexible blocking piece comprises a plurality of flexible pads.

[0081] As a preferred material falling mechanism, the flexible blocking piece comprises a plurality of flexible strips, and the plurality of flexible strips are arranged on the first side in a spaced manner.

[0082] As a preferred material falling mechanism, the chute bottom plate comprises a main plate body and a bent portion connected in an L shape, the main plate body comprises the first side and the second side, and the first side is connected with the bent portion; a plurality of through holes arranged in a spaced manner are formed at the connection of the main plate body and the bent portion; the chute bottom plate further comprises a pressing plate arranged below the main plate body, the pressing plate comprises a first plate body and a second plate body connected in an L shape, a plurality of groups of perforations arranged in a spaced manner along the length direction of the first plate body are formed on the first plate body, each group of perforations comprises a first perforation and a second perforation arranged in a spaced manner along the width direction of the first plate body; one end of the flexible strip sequentially passes through the through hole, the second perforation and the first perforation to form a U-shaped portion; and the second plate body is detachably connected with the bent portion.

[0083] As a preferred material falling mechanism, a connecting hole is formed on the second plate body, a locking long hole is formed on the bent portion, and the connecting hole and the locking long hole are connected through a fastener.

[0084] As a preferred material falling mechanism, a plurality of reinforcing ribs are further arranged on the bottom of the main plate body.

[0085] As a preferred material of the flexible blocking piece, silica gel or rubber is adopted. BRIEF DESCRIPTION OF DRAWINGS

[0086] Fig. 1 is a structural schematic diagram of an embodiment of the package sorting system according to the present application;

[0087] Fig. 2 is a top view of Fig. 1;

[0088] Fig. 3 is an assembly schematic diagram of the sorting trolley in the fixed frame when a single trolley structure is adopted in Fig. 1;

[0089] Fig. 4 is a schematic diagram of Fig. 3 from another perspective;

[0090] Fig. 5 is an assembly schematic diagram of the sorting trolley in the fixed frame when a double trolley structure is adopted in Fig. 1;

[0091] Fig. 6 is an enlarged view of the A circle in Fig. 5;

[0092] Fig. 7 is a connection schematic diagram of the sorting trolley and the translation moving frame in Fig. 5;

[0093] Fig. 8 is an assembly schematic diagram of the sorting trolley in the fixed frame when a four-trolley structure is adopted in Fig. 1;

[0094] Fig. 9 is an assembly schematic diagram of the four sorting trolleys and the four sets of sorting transmission mechanisms in Fig. 8;

[0095] Fig. 10 is a connection schematic diagram of the sorting trolley and the translation moving frame in Fig. 8;

[0096] Fig. 11 is a structural schematic diagram of an embodiment of the package sorting system according to the present application, in which the receiving equipment is omitted;

[0097] Fig. 12 is a structural schematic diagram of an embodiment of the package sorting system according to the present application, in which the receiving equipment is omitted;

[0098] Fig. 13 is a top view of Fig. 12;

[0099] Fig. 14 is a structural schematic diagram of an embodiment of the package sorting system according to the present application;

[0100] Fig. 15 is a front view of the multiple sets of upper feeding belt conveying mechanisms in Fig. 14;

[0101] Fig. 16 is a structural schematic diagram of an embodiment of the package sorting system according to the present application;

[0102] Fig. 17 is a perspective view of two sets of upper feeding belt conveying mechanisms assembled in one conveying assembly installation area in Fig. 16;

[0103] Fig. 18 is a perspective view of Fig. 17 from another perspective;

[0104] Fig. 19 is a perspective view of Fig. 18, omitting the machine stand baffle, the bag driving source, the first pulley and the pulley transmission synchronous belt;

[0105] Fig. 20 is a structural schematic view of the abutment of two adjacent groups of the loading belt conveying mechanism in Fig. 16;

[0106] Fig. 21 is a structural schematic view of the sorting trolley embodiment one in the present application;

[0107] Fig. 22 is a sectional view of Fig. 21;

[0108] Fig. 23 is a structural schematic view of the sorting trolley embodiment two in the present application;

[0109] Fig. 24 is a structural schematic view of the sorting trolley embodiment three in the present application;

[0110] Fig. 25 is an enlarged view of the B circle of Fig. 24;

[0111] Fig. 26 is an enlarged view of the C circle of Fig. 24;

[0112] Fig. 27 is a top view of Fig. 24;

[0113] Fig. 28 is a side view of Fig. 24;

[0114] Fig. 29 is a structural schematic view of the material dropping mechanism in the present application;

[0115] Fig. 30 is a side view of Fig. 29;

[0116] Fig. 31 is an enlarged view of the D circle of Fig. 30;

[0117] Fig. 32 is a structural schematic view of the connection of the flexible baffle, the pressing plate and the sliding groove bottom plate in Fig. 29;

[0118] Fig. 33 is a structural schematic view of the sliding groove bottom plate in Fig. 29;

[0119] Fig. 34 is an enlarged view of the E circle of Fig. 30;

[0120] Fig. 35 is a structural schematic view of the pressing plate in Fig. 29;

[0121] Fig. 36 is a structural schematic view of the flexible strip in Fig. 29. DETAILED DESCRIPTION

[0122] The embodiments of the present application are described below by specific embodiments, and other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification.

[0123] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings of the present disclosure are merely used to cooperate with the content disclosed in the present disclosure, so as to be understood and read by those skilled in the art, and do not have technical significance, and any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect and purpose of the present disclosure, should still fall within the scope of the disclosed technology.

[0124] It is also to be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or can have a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can be indirectly connected to the other element through a middle element.

[0125] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated or the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed in the present application.

[0126] Middle supply bag sorting system embodiment one

[0127] The middle supply bag sorting system embodiment one is used for automatically sorting multiple express deliveries. As shown in FIG. 1 and FIG. 2, the middle supply bag sorting system embodiment one includes a fixed frame 10 and a feeding supply bag device 20, at least one sorting trolley 30 movably installed on the fixed frame 10, a discharging mechanism 40 installed on the fixed frame 10, and a receiving device 50 arranged outside the fixed frame 10, the discharging mechanism 40 has a plurality of discharging chutes 41, the plurality of discharging chutes 42 are arrayed in a plurality of layers in a top-down manner, and each layer has a plurality of discharging chutes, the sorting trolley 30 can reciprocate between the feeding supply bag device 20 and the discharging chute 41, and the receiving device 50 has a plurality of receiving frames 51 corresponding to the discharging chutes 41, and the goods shelf of the receiving device 50 is a movable structure.

[0128] The first embodiment of the middle feeding and bagging sorting system is a non-terminal feeding and bagging structure. Specifically, as shown in FIGS. 1 and 2, the fixed frame 10 is provided with a feeding and bagging station 101, and the feeding and bagging device 20 is arranged at the feeding and bagging station 101 of the fixed frame 10. In addition, the fixed frame 10 is provided with a discharging chute 41 and a receiving device 50 on different sides of the feeding and bagging device 20, so as to realize that the sorting trolley 30 receives the sorted objects (such as express goods and the like) at the feeding and bagging station 101, and then moves to different sides of the feeding and bagging station 101 to move the objects.

[0129] Further, the application also provides a middle feeding and bagging sorting method using the above-mentioned middle feeding and bagging sorting system, which comprises the following steps:

[0130] Step S1, sequentially placing a plurality of sorted objects on the feeding and bagging device 20, and the feeding and bagging device 20 conveying the sorted objects towards the fixed frame 10. In this embodiment, the feeding and bagging device 20 conveys the sorted objects forward, so the feeding direction of the feeding and bagging device 20 is the forward direction;

[0131] Step S2, moving the sorting trolley 30 to the feeding and bagging device 20;

[0132] Step S3, the sorting trolley 30 receiving the sorted objects output by the feeding and bagging device 20;

[0133] Step S4, moving the sorting trolley 30 to the discharging chute 41 corresponding to the sorted object on the sorting trolley 30;

[0134] Step S5, the sorting trolley 30 unloading the sorted object thereon, and the sorted object falling into the receiving frame 51 corresponding to the discharging chute 41 through the discharging chute 41; thus, the automatic sorting of one sorted object is completed;

[0135] Step S6, moving the sorting trolley 30 back to the feeding and bagging device 20;

[0136] Step S7, repeating steps S3 to S6 to sequentially complete the automatic sorting of a plurality of sorted objects; then in the process of repeatedly sorting a plurality of sorted objects in steps S3 to S6, step S4 is executed multiple times; in the multiple executions of step S4, based on the structure that the fixed frame 10 is provided with a discharging chute 41 and a receiving device 50 on different sides of the feeding and bagging device 20, the sorting trolley 30 can move towards the discharging chute 41 distributed on different sides of the feeding and bagging device 20 to feed the objects, instead of being limited to feeding the objects towards the same side of the feeding and bagging device 20 as in the prior art.

[0137] Therefore, the application sets the feeding and bagging station 101 and the feeding and bagging device 20 at a non-terminal position in the extension direction of the fixed frame 10, so that the fixed frame 10 is provided with the material falling chute 41 and the material receiving device 50 on different sides of the feeding and bagging station 101 and the feeding and bagging device 20, forming a middle feeding and bagging structure, or a non-terminal feeding and bagging structure. Compared with the terminal feeding and bagging structure in the prior art, in which the feeding and bagging station 101 and the feeding and bagging device 20 are arranged at one end of the extension direction of the fixed frame 10, the application can shorten the moving distance of the sorting trolley 30 in the extension direction of the fixed frame 10 in a single sorting, thereby shortening the time required for a single sorting, or can arrange more material falling chutes 41 under the premise of the same moving distance of the sorting trolley 30, thereby effectively improving the sorting efficiency.

[0138] Further, the fixed frame 10 can have various forms. In the middle feeding and bagging sorting system embodiment one, as shown in FIGS. 1 and 2, the fixed frame 10 is a one-word-shaped frame extending in one direction as a whole, i.e., the fixed frame 10 is one-word-shaped and extends straight along a direction perpendicular to the feeding direction of the feeding and bagging device 20. Therefore, the one-word-shaped fixed frame 10 extends straight along the length direction thereof. For ease of description, the extension direction of the one-word-shaped fixed frame 10 is defined as the left-right direction, so that the fixed frame 10 extends along the left-right direction, and the length direction of the fixed frame 10 is the left-right direction of the paper in the view of FIG. 2; the width direction of the fixed frame 10 is the front-rear direction, i.e., the up-down direction of the paper in the view of FIG. 2; and the height direction of the fixed frame 10 is the up-down direction, i.e., the front-rear direction of the paper in the view of FIG. 2. The feeding direction of the feeding and bagging device 20 is the front direction.

[0139] As shown in FIGS. 1 and 2, based on the one-word-shaped fixed frame 10, the feeding and bagging station 101 is arranged at a non-end position in the length direction of the fixed frame 10, i.e., the feeding and bagging station 101 and the feeding and bagging device 20 are not arranged at the left end or the right end of the fixed frame 10, but at a position between the left end and the right end of the fixed frame 10. Along a direction perpendicular to the feeding direction of the feeding and bagging device 20, the middle feeding and bagging sorting system embodiment one is provided with a sorting subsystem on both sides of the feeding and bagging station 101 and the feeding and bagging device 20, and each sorting subsystem comprises part of the fixed frame 10, the material falling chute 41 and the material receiving device 50.

[0140] Further, in the first embodiment of the middle-located parcel sorting system, the setting positions of the parcel feeding workstations 101 and the parcel feeding devices 20 in the length direction of the fixed frame 10 can be various, such as being set at the middle right part of the fixed frame 10, or being set at the middle left part of the fixed frame 10, or being set at the middle part of the fixed frame 10. The specific setting position can be determined according to actual requirements. In this embodiment, as shown in FIGS. 1 and 2, along the length direction of the fixed frame 10, the parcel feeding workstations 101 and the parcel feeding devices 20 are both set at the middle position of the fixed frame 10. Moreover, along the width direction of the fixed frame 10, the parcel feeding devices 20 are set at the rear side of the fixed frame 10, and the parcel feeding devices 20 convey the sorted articles forward.

[0141] Further, as shown in FIGS. 1 and 2, in each sorting subsystem, the fixed frame 10 is provided with the dropping mechanisms 40 on both sides in the vertical direction of the extension direction of the fixed frame 10. That is, the front side of the fixed frame 10 is provided with two groups of the dropping mechanisms 40 distributed on the left and right sides of the parcel feeding workstations 101 and the parcel feeding devices 20, and the rear side of the fixed frame 10 is also provided with two groups of the dropping mechanisms 40 distributed on the left and right sides of the parcel feeding workstations 101 and the parcel feeding devices 20. Each group of the dropping mechanisms 40 has a plurality of dropping chutes 41, and each group of the dropping mechanisms 40 is provided with a group of the receiving devices 50 on the outer side in the front-rear direction. Therefore, the first embodiment of the middle-located parcel sorting system is provided with four groups of the dropping mechanisms 40 and the receiving devices 50 matched with each other, thereby improving the sorting efficiency. Based on this structure, as shown in FIGS. 1 and 2, the fixed frame 10 includes two front and rear gantries 103 and a plurality of fixed links 104 fixedly connected between the two front and rear gantries 103, and a trolley movement space 102 allowing the trolley 30 to move is formed between the two front and rear gantries 103. The two groups of the dropping mechanisms 40 on the front side are fixed to the front gantry 103, and the two groups of the dropping mechanisms 40 on the rear side are fixed to the rear gantry 103, so that the trolley movement space 102 is also formed between the two groups of the dropping mechanisms 40 in each sorting subsystem. The gantry 103 is provided with a space constituting the parcel feeding workstation 101 at least at the middle position thereof.

[0142] Further, in the first embodiment of the middle-feeding parcel sorting system, the number of sorting trolleys 30 movably installed between the front and rear gantries 103 in the fixed frame 10 is at least one, and the number of sorting trolleys 30 can be one, two, four or more, which is determined according to actual needs. The more sorting trolleys 30 are configured, the higher the sorting efficiency is. Based on different numbers of sorting trolleys 30, the first embodiment of the middle-feeding parcel sorting system has multiple structures. In the first embodiment of the middle-feeding parcel sorting system, the sorting trolley 30 reciprocates between the parcel feeding device 20 and the discharge chute 41 in the form of left-right translation and up-down translation. The following provides three preferred structures of the first embodiment of the middle-feeding parcel sorting system.

[0143] The first embodiment of the middle-feeding parcel sorting system with a single trolley structure

[0144] As shown in FIG. 3, the first embodiment of the middle-feeding parcel sorting system has a single trolley structure, that is, one sorting trolley 30 is configured, and the sorting trolley 30 can move in the length direction of the fixed frame 10 in the left and right side areas of the parcel feeding station 101, that is, the sorting trolley 30 can translate leftward or rightward after taking the parcel from the parcel feeding station.

[0145] Further, the movement of the single sorting trolley 30 in the fixed frame 10 is in the form of left-right movement in the length direction of the fixed frame 10 and up-down movement in the height direction of the fixed frame 10. Based on this, the single sorting trolley 30 is movably installed in the fixed frame 10 by a sorting transmission mechanism 60 in the form of left-right translation and up-down movement. The preferred structure of the sorting transmission mechanism 60 is that, as shown in FIGS. 3 and 4, the sorting transmission mechanism 60 includes a translation guide rail 61 fixed to the fixed frame 10, a translation driving source 62, a translation moving frame 63 in sliding cooperation with the translation guide rail 61, a longitudinal movement driving source 64, and a longitudinal movement guide rail 65 fixed to the translation moving frame 63; the translation guide rail 61 extends horizontally in the length direction of the fixed frame 10, and the left and right ends of the translation guide rail 61 extend to the left and right ends of the fixed frame 10, so that the translation guide rail 61 spans the left and right groups of discharge mechanisms 40 and the parcel feeding station 101 in the length direction thereof; the longitudinal movement guide rail 65 extends horizontally in the height direction of the fixed frame 10; the translation driving source 62 is in transmission connection with the translation moving frame 63 to drive the translation moving frame 63 to translate leftward or rightward along the translation guide rail 61; the sorting trolley 30 is in sliding cooperation with the longitudinal movement guide rail 65, and the longitudinal movement driving source 64 is in transmission connection with the sorting trolley 30 to drive the sorting trolley 30 to translate upward or downward along the longitudinal movement guide rail 65. In addition, in the middle-feeding parcel sorting system with a single trolley structure, the translation guide rail 61 is configured at the middle position between the front and rear gantries 103 in the front and rear directions, and the translation moving frame 63 has a square column structure.

[0146] Further, as shown in FIG. 3 and FIG. 4, the translation driving source 62 is a translation driving motor fixed on the top of the fixed frame 10, and the longitudinal movement driving source 64 is a longitudinal movement driving motor fixed on the top of the translation moving frame 63. The translation driving motor is connected with the translation moving frame 63 through a first synchronous belt transmission assembly 66, the first synchronous belt transmission assembly 66 includes a first driving pulley 661 and a first driven pulley 662 which are rotatably supported in the fixed frame 10, and a first synchronous belt 663 connected on the outer periphery of the first driving pulley 661 and the first driven pulley 662, the translation driving motor is connected with the first driving pulley 661, and the first synchronous belt 663 is fixedly connected with the translation moving frame 63; the wheel axes of the first driving pulley 661 and the first driven pulley 662 both vertically extend. The longitudinal movement driving motor is connected with the sorting trolley 30 through a second synchronous belt transmission assembly 67, the second synchronous belt transmission assembly 67 includes a second driving pulley 671 and a second driven pulley 672 which are rotatably supported in the translation moving frame 63, and a second synchronous belt 673 connected on the outer periphery of the second driving pulley 671 and the second driven pulley 672, the longitudinal movement driving motor is connected with the second driving pulley 671, and the second synchronous belt 673 is fixedly connected with the sorting trolley 30. The first driving pulley 661 and the first driven pulley 662 are respectively assembled at the left end and the right end of the fixed frame 10, so that the extension path of the first synchronous belt 663 covers the feeding and bagging station 101; the second driving pulley 671 and the second driven pulley 672 are respectively assembled at the upper end and the lower end of the translation moving frame 63, so that the extension path of the second synchronous belt 673 covers the feeding and bagging station 101. In this way, by pulling the left and right translation of the translation moving frame 63 and the sorting trolley 30 through the first synchronous belt 663, and pulling the up and down translation of the sorting trolley 30 through the second synchronous belt 673, the sorting trolley 30 can be moved to the feeding and bagging station 101, in the embodiment, the sorting trolley 30 can be moved to the lower rear end of the feeding and bagging device 20, to take the sorted articles output forwardly by the feeding and bagging device 20.

[0147] Preferably, as shown in FIG. 3, the translation guide rail 61 has two upper and lower translation guide rails, the top of the translation moving frame 63 is in sliding fit with the upper translation guide rail 61, and the bottom of the translation moving frame 63 is in sliding fit with the lower translation guide rail 61; and the translation driving motor is connected with the translation moving frame 63 through the two sets of first synchronous belt transmission assemblies 66, thereby improving the stability of the left and right translation of the translation moving frame 63. The sorting transmission mechanism 60 further includes a first driving rotating shaft 68 extending upwardly and downwardly and rotatably installed on the left side of the fixed frame 10 through a bearing seat, the upper end of the first driving rotating shaft 68 is fixedly connected with the motor shaft of the translation driving motor through a shaft coupling, and the first driving pulleys 661 of the two sets of first synchronous belt transmission assemblies 66 are fixedly locked on the first driving rotating shaft 68 through screws.

[0148] Preferably, as shown in FIG. 3 and FIG. 4, the top and bottom of the translation moving frame 63 are both mounted with a plurality of rotatable walking wheels 610 and a plurality of rotatable guide wheels 611; the axes of the walking wheels 610 extend horizontally forward and backward, and the walking wheels 610 are assembled in the guide rail grooves of the translation guide rail 61; the axes of the guide wheels 611 extend horizontally upward and downward, and the guide wheels 611 abut against the front and back sides of the translation guide rail 61.

[0149] The first embodiment of the middle-feeding bag sorting system with double-car structure

[0150] As shown in FIG. 5, the first embodiment of the middle-feeding bag sorting system is of double-car structure, i.e., two sorting trolleys 30 are configured, and both of the two sorting trolleys 30 can move in the length direction of the fixed frame 10 in the left and right side areas of the feeding bag loading station 101, i.e., after each sorting trolley 30 takes the material from the feeding bag loading station 101, the sorting trolley 30 can move leftward or rightward.

[0151] Further, the movement modes of the two sorting trolleys 30 in the fixed frame 10 are both moving leftward and rightward in the length direction of the fixed frame 10 and lifting upward and downward in the height direction of the fixed frame 10. Based on this, each sorting trolley 30 is installed in the fixed frame 10 through a set of sorting transmission mechanism 60 and can move leftward and rightward and lift upward and downward. As shown in FIG. 5, the structure of each set of sorting transmission mechanism 60 is the same as that of the sorting transmission mechanism 60 in the first embodiment of the middle-feeding bag sorting system with single-car structure, and also has the translation guide rail 61 fixedly arranged, the translation moving frame 63 in sliding cooperation with the translation guide rail 61, the translation driving source 62 for driving the translation moving frame 63 to move leftward and rightward along the translation guide rail 61 through the upper and lower sets of first synchronous belt transmission assemblies 66, the longitudinal moving guide rail 65 fixed to the translation moving frame 63, and the longitudinal driving source 64 for driving the sorting trolley 30 to move upward and downward along the longitudinal moving guide rail 65 through the second synchronous belt transmission assembly 67. The first driving pulley 661 and the first driven pulley 662 are respectively assembled at the left end and the right end of the fixed frame 10, so that the extension path of the first synchronous belt 663 covers the feeding bag loading station 101; the second driving pulley 671 and the second driven pulley 672 are respectively assembled at the upper end and the lower end of the translation moving frame 63, so that the extension path of the second synchronous belt 673 covers the feeding bag loading station 101.

[0152] But the difference is: in the first embodiment of the middle-located package sorting system with double-car structure, as shown in FIG. 5, the pair of translation rails 61 in the sorting transmission mechanism 60 connected with one of the sorting cars 30 is arranged on the front side of the rear gantry 103 in the front-rear direction, and the translation moving frame 63 in this group moves left and right next to the front side of the rear gantry 103. The pair of translation rails 61 in the sorting transmission mechanism 60 connected with the other sorting car 30 is arranged on the rear side of the front gantry 103 in the front-rear direction, and the translation moving frame 63 in this group moves left and right next to the rear side of the front gantry 103. And as shown in FIG. 7, the translation moving frame 63 is a flat frame very narrow in the front-rear direction, and the end of the sorting car 30 in the front-rear direction is mounted on the translation moving frame 63, which is a cantilever mounting structure. In the front-rear direction, the gap between the end of the sorting car 30 extending out of the translation moving frame 63 and the gantry 103 on the opposite side of the translation moving frame 63 allows the translation moving frame 63 in the other sorting transmission mechanism 60 to pass through. In this way, when the two sets of sorting transmission mechanisms 60 are used to independently drive the two sorting cars 30 to move left and right and up and down, the translation moving frames 63 in the two sets of sorting transmission mechanisms 60 do not interfere with each other, and both of the two sorting cars 30 can move to the package feeding station 101 to pick up the packages.

[0153] Preferably, as shown in FIG. 7, the longitudinal moving motor drives the sorting car 30 to move up and down along the longitudinal moving rail 65 through the left and right sets of second synchronous belt transmission assemblies 67, which are respectively installed on the left and right edges of the translation moving frame 63, to improve the stability of the sorting car 30 in the cantilever mounting structure when moving up and down. Based on this, each set of sorting transmission mechanism 60 also includes a second driving shaft 69 extending left and right and rotatably installed on the top of the translation moving frame 63 through a bearing seat, the right end of the second driving shaft 69 is fixedly connected with the motor shaft of the longitudinal moving motor through a shaft coupling, and the second driving pulley 671 in the left and right sets of second synchronous belt transmission assemblies 67 is fixedly locked on the second driving shaft 69 through screws.

[0154] Preferably, as shown in FIG. 6 and FIG. 7, the top and bottom of each translation moving frame 63 are installed with a plurality of rotatable walking wheels 610 and a plurality of rotatable guide wheels 611; the axis of the walking wheel 610 extends straight in the front-rear direction, every two walking wheels 610 constitute a group and are installed on the same wheel shaft, and the two walking wheels 610 in each group abut against the front and rear sides of the translation rail 61; the axis of the guide wheel 611 extends straight in the up-down direction, and the guide wheel 611 abuts against the front and rear sides of the translation rail 61.

[0155] The first embodiment of the middle-located package sorting system with four-car structure

[0156] As shown in FIGS. 8 and 9, the middle-located parcel sorting system embodiment one is a four-car structure, i.e., four sorting cars 30 are configured. For ease of description, the four sorting cars 30 are defined as a first sorting car 71, a second sorting car 72, a third sorting car 73, and a fourth sorting car 74. Among them, in the length direction of the fixed frame 10, the first sorting car 71 and the second sorting car 72 are located in the area on the left side of the parcel feeding station 101, and the first sorting car 71 and the second sorting car 72 are arranged to be able to move only in the left side area of the parcel feeding station 101, and cannot move to the right side area of the parcel feeding station 101; the third sorting car 73 and the fourth sorting car 74 are located in the area on the right side of the parcel feeding station 101, and the third sorting car 73 and the fourth sorting car 74 are arranged to be able to move only in the right side area of the parcel feeding station 101, and cannot move to the left side area of the parcel feeding station 101. In this way, it is ensured that the four sorting cars 30 do not interfere with each other during sorting.

[0157] Further, the movement mode of the four sorting cars 30 in the fixed frame 10 is to move left and right along the length direction of the fixed frame 10, and to lift along the height direction of the fixed frame 10. Based on this, each sorting car 30 is installed on the fixed frame 10 through a set of sorting transmission mechanism 60 which can translate left and right and can lift. As shown in FIGS. 8 to 10, the structure of each set of sorting transmission mechanism 60 is the same as that of the sorting transmission mechanism 60 in the middle-located parcel sorting system embodiment one of the double-car structure, which also has a fixedly arranged translation guide rail 61, a translation moving frame 63 which is a flat frame and is in sliding cooperation with the translation guide rail 61, a translation driving source 62 which drives the translation moving frame 63 to translate left and right along the translation guide rail 61 through the upper and lower two sets of first synchronous belt transmission assemblies 66, a longitudinal moving guide rail 65 fixed to the translation moving frame 63, and a longitudinal moving driving source 64 which drives the sorting car 30 to translate up and down along the longitudinal moving guide rail 65 through the left and right two sets of second synchronous belt transmission assemblies 67.

[0158] But the difference is: in the first embodiment of the middle-set package sorting system with four-car structure, as shown in FIG. 8 and FIG. 9, the rear end of the first sorting trolley 71 is installed on the left rear side translation moving frame 63, the rear end of the third sorting trolley 73 is installed on the right rear side translation moving frame 63, the left rear side translation moving frame 63 and the right rear side translation moving frame 63 are aligned in the width direction of the fixed frame 10 (i.e. both are distributed on the rear side of the fixed frame 10) and are distributed on the left and right sides of the loading package supply station 101 in the length direction of the fixed frame 10, so that the upper ends of the left rear side translation moving frame 63 and the right rear side translation moving frame 63 share the same root rear side translation guide rail 61 and the lower ends also share the same root rear side translation guide rail 61. Similarly, the front end of the second sorting trolley 72 is installed on the left front side translation moving frame 63, the front end of the fourth sorting trolley 74 is installed on the right front side translation moving frame 63, the left front side translation moving frame 63 and the right front side translation moving frame 63 are aligned in the width direction of the fixed frame 10 (i.e. both are distributed on the front side of the fixed frame 10) and are distributed on the left and right sides of the loading package supply station 101 in the length direction of the fixed frame 10, so that the upper ends of the left front side translation moving frame 63 and the right front side translation moving frame 63 share the same root front side translation guide rail 61 and the lower ends also share the same root front side translation guide rail 61, so that the overall structure of the middle-set package sorting system is compact and the cost is reduced.

[0159] Further, the two sets of first synchronous belt transmission assemblies 66 connected with the two translation moving frames 63 sharing the same root translation guide rail 61 are staggered in the width direction of the fixed frame 10. Taking the left rear translation moving frame 63 and the right rear translation moving frame 63 sharing the same root rear translation guide rail 61 as an example: as shown in FIG. 9, in the sorting transmission mechanism 60 where the left rear translation moving frame 63 is located, the first driving pulley 661 is arranged at the left end of the fixed frame 10, and the first driven pulley 662 is arranged at the right end of the package feeding station 101, so that the extension path of the first synchronous belt 663 in the sorting transmission mechanism 60 covers the package feeding station 101; and both the first driving pulley 661 and the first driven pulley 662 in the sorting transmission mechanism 60 are arranged at the rear side (i.e. the outer side in the width direction) of the translation guide rail 61, so that the first synchronous belt 663 in the set of sorting transmission mechanisms 60 is distributed at the rear side (i.e. the outer side in the width direction) of the translation guide rail 61. In the sorting transmission mechanism 60 where the right rear translation moving frame 63 is located, the first driving pulley 661 is arranged at the right end of the fixed frame 10, and the first driven pulley 662 is arranged at the left end of the package feeding station 101, so that the extension path of the first synchronous belt 663 in the sorting transmission mechanism 60 covers the package feeding station 101; and both the first driving pulley 661 and the first driven pulley 662 in the sorting transmission mechanism 60 are arranged at the front side (i.e. the inner side in the width direction) of the translation guide rail 61, so that the first synchronous belt 663 in the set of sorting transmission mechanisms 60 is distributed at the front side (i.e. the inner side in the width direction) of the translation guide rail 61. In this way, the first synchronous belt transmission assemblies 66 driving the two translation moving frames 63 translating along the same root translation guide rail 61 are staggered in the front-rear direction, avoiding mutual interference; in particular, the two translation moving frames 63 sharing the same root translation guide rail 61 and the sorting trolleys 30 thereon, or the translation moving frames 63 moving along the same root translation guide rail 61 and the sorting trolleys 30 thereon, have a coincident section in the moving stroke in the extension direction of the translation guide rail 61 at the package feeding station 101, so that the sorting trolleys 30 on the two translation moving frames 63 can both move to the package feeding station 101 to pick up the goods, meeting the pick-up requirement of the centrally placed package feeding station.

[0160] Preferably, as shown in FIG. 10, the top and bottom of each translation moving frame 63 are provided with a plurality of rotatable walking wheels 610 and a plurality of rotatable guide wheels 611; the axes of the walking wheels 610 extend straight in the front-rear direction, every two walking wheels 610 constitute a set and are mounted on the same wheel shaft, and the two walking wheels 610 in each set abut against the front and rear sides of the translation guide rail 61; the axes of the guide wheels 611 extend straight in the up-down direction, and the guide wheels 611 abut against the front and rear sides of the translation guide rail 61.

[0161] Based on this, the application further provides a sorting mechanism for realizing the movement of the two groups of sorting trolleys 30 and the sorting transmission mechanism 60 along the same translation guide rail 60 without interfering with each other. Therefore, the middle package sorting system embodiment one of the four-trolley structure comprises two sets of the above sorting mechanism, and each set of the sorting mechanism comprises a translation guide rail 61 and a first component and a second component sharing the translation guide rail 61. In the sorting mechanism where the rear translation guide rail 61 is located, the first component comprises a first trolley (i.e. the first sorting trolley 71) and a first translation transmission unit (i.e. the sorting transmission mechanism 60 connected with the first sorting trolley 71), and the second component comprises a second trolley (i.e. the third sorting trolley 73) and a second translation transmission unit (i.e. the sorting transmission mechanism 60 connected with the third sorting trolley 73). Similarly, in the sorting mechanism where the front translation guide rail 61 is located, the first component comprises a first trolley (i.e. the second sorting trolley 72) and a first translation transmission unit (i.e. the sorting transmission mechanism 60 connected with the second sorting trolley 72), and the second component comprises a second trolley (i.e. the fourth sorting trolley 74) and a second translation transmission unit (i.e. the sorting transmission mechanism 60 connected with the fourth sorting trolley 74).

[0162] The sorting mechanism where the rear translation guide rail 61 is located is further expanded. In the sorting mechanism, the first synchronous belt transmission component 66, the translation driving source 62, the first driving pulley 661, the first driven pulley 662 and the first synchronous belt 663 in the sorting transmission mechanism 60 connected with the first sorting trolley 71 respectively constitute the first translation driving source, the first translation transmission unit, the first translation driving wheel, the first translation driven wheel and the first translation transmission member of the first component. The first synchronous belt transmission component 66, the translation driving source 62, the first driving pulley 661, the first driven pulley 662 and the first synchronous belt 663 in the sorting transmission mechanism 60 connected with the third sorting trolley 73 respectively constitute the second translation driving source, the second translation transmission unit, the second translation driving wheel, the second translation driven wheel and the second translation transmission member of the second component. In this embodiment, the first translation transmission unit and the second translation transmission unit are both synchronous belt transmission components, and in other embodiments, chain and sprocket components, gear and rack components, etc. can also be selected. Along the extension direction of the rear translation guide rail 61, the middle part of the translation guide rail 61 is provided with a picking station at the feeding package station 101 for the first sorting trolley 71 and the third sorting trolley 73 to pick, and the movement stroke of the first sorting trolley 71 and the third sorting trolley 73 has an overlapping section at the picking station.

[0163] In addition, the translation moving frame 63 and the second synchronous belt transmission component 67 in the sorting transmission mechanism 60 connected with the first sorting trolley 71 respectively constitute the first translation moving frame and the first lifting transmission unit of the first component, and the translation moving frame 63 and the second synchronous belt transmission component 67 in the sorting transmission mechanism 60 connected with the third sorting trolley 73 respectively constitute the second translation moving frame and the second lifting transmission unit of the second component.

[0164] The second embodiment of the middle feeding and sorting system

[0165] As shown in FIG. 11, the fixed frame 10 is an L-shaped frame extending in multiple directions as a whole, and the fixed frame 10 is L-shaped and has a corner. The feeding and feeding station 101 and the feeding and feeding device 20 are arranged at the corner of the fixed frame 10 along the extension direction of the fixed frame 10. Along the feeding direction of the feeding and feeding device 20, the fixed frame 10 is provided with a sorting subsystem on the opposite side (i.e. the front side) of the feeding and feeding device 20; along the direction perpendicular to the feeding direction of the feeding and feeding device 20, the fixed frame 10 is provided with a sorting subsystem on the left side or the right side of the feeding and feeding device 20. Therefore, the second embodiment of the middle feeding and sorting system has two sorting subsystems, each of which includes part of the fixed frame 10, the material falling chute 41 and the material receiving device 50. In the second embodiment of the middle feeding and sorting system shown in FIG. 11, the two sorting subsystems are arranged on the front side and the right side of the feeding and feeding station 101 and the feeding and feeding device 20, respectively.

[0166] Further, as shown in FIG. 11, in each sorting subsystem, the fixed frame 10 is provided with a material falling mechanism 40 on both sides perpendicular to its extension direction, and a trolley movement space 102 allowing the sorting trolley 30 to move is formed between the two sets of material falling mechanisms 40. Specifically, in the sorting subsystem distributed on the front side of the feeding and feeding station 101 and the feeding and feeding device 20, this part of the fixed frame 10 extends straight in the front-rear direction, and each of the left and right sides of this part of the fixed frame 10 is provided with a set of material falling mechanisms 40 distributed on the front side of the feeding and feeding station 101 and the feeding and feeding device 20, and each set of material falling mechanisms 40 is provided with a set of material receiving devices 50 on the outer side in the left-right direction; this part of the fixed frame 10 includes two left and right gantries 103 and a plurality of fixed connecting rods 104 fixedly connected between the two left and right gantries 103, and the trolley movement space 102 is formed between the two left and right gantries 103. In the sorting subsystem distributed on the right side of the feeding and feeding station 101 and the feeding and feeding device 20, this part of the fixed frame 10 extends straight in the left-right direction, and each of the front and rear sides of this part of the fixed frame 10 is provided with a set of material falling mechanisms 40 distributed on the right side of the feeding and feeding station 101 and the feeding and feeding device 20, and each set of material falling mechanisms 40 is provided with a set of material receiving devices 50 on the outer side in the front-rear direction; this part of the fixed frame 10 includes two front and rear gantries 103 and a plurality of fixed connecting rods 104 fixedly connected between the two front and rear gantries 103, and the trolley movement space 102 is formed between the two left and right gantries 103. Therefore, the feeding and feeding station 101 and the feeding and feeding device 20 are formed at the joint of the part of the fixed frame 10 extending in the front-rear direction and the part of the fixed frame 10 extending in the left-right direction.

[0167] Of course, in other embodiments, the fixed frame 10 can also be V-shaped, and the feeding and bagging workstations 101 and the feeding and bagging equipment 20 are both arranged at the corners of the fixed frame 10 along the extension direction of the fixed frame 10.

[0168] Embodiment three of the middle-arranged feeding and bagging sorting system

[0169] As shown in FIGS. 12 and 13, the fixed frame 10 is a T-shaped frame extending in multiple directions as a whole, and the fixed frame 10 is T-shaped, so the fixed frame 10 has corners; the feeding and bagging workstations 101 and the feeding and bagging equipment 20 are both arranged at the corners of the fixed frame 10 along the extension direction of the fixed frame 10. Along the feeding direction of the feeding and bagging equipment 20, the fixed frame 10 is provided with a sorting subsystem on the opposite side (i.e., the front side) of the feeding and bagging equipment 20; along the direction perpendicular to the feeding direction of the feeding and bagging equipment 20, the fixed frame 10 is provided with a sorting subsystem on both the left side and the right side of the feeding and bagging equipment 20. Therefore, the embodiment three of the middle-arranged feeding and bagging sorting system has three sorting subsystems, and each sorting subsystem includes part of the fixed frame 10, the drop chute 41, and the receiving equipment 50.

[0170] Further, as shown in FIG. 12 and FIG. 13, in each sorting subsystem, the fixed frame 10 is provided with the material dropping mechanism 40 on both sides in the vertical direction of the extension direction of the fixed frame 10, and a trolley movement space 102 allowing the sorting trolley 30 to move is formed between the two groups of material dropping mechanisms 40. Specifically, in the sorting subsystem distributed on the front side of the material feeding and bagging work station 101 and the material feeding and bagging device 20, this part of the fixed frame 10 extends straight in the front-rear direction, and each of the left and right sides of this part of the fixed frame 10 is provided with a group of material dropping mechanisms 40 distributed on the front side of the material feeding and bagging work station 101 and the material feeding and bagging device 20, and each group of material dropping mechanisms 40 is provided with a group of material receiving devices 50 on the outer side in the left-right direction; this part of the fixed frame 10 includes two left and right gantries 103 and a plurality of fixed connecting rods 104 fixedly connected between the two left and right gantries 103, and the trolley movement space 102 is formed between the two left and right gantries 103. In the sorting subsystem distributed on the left and right sides of the material feeding and bagging work station 101 and the material feeding and bagging device 20, this part of the fixed frame 10 extends straight in the left-right direction, and each of the front and rear sides of the left part of the fixed frame 10 is provided with a group of material dropping mechanisms 40 distributed on the left side of the material feeding and bagging work station 101 and the material feeding and bagging device 20, and each of the front and rear sides of the right part of the fixed frame 10 is provided with a group of material dropping mechanisms 40 distributed on the right side of the material feeding and bagging work station 101 and the material feeding and bagging device 20; each group of material dropping mechanisms 40 is provided with a group of material receiving devices 50 on the outer side in the front-rear direction; and each of the left part of the fixed frame 10 and the right part of the fixed frame 10 includes two front and rear gantries 103 and a plurality of fixed connecting rods 104 fixedly connected between the two front and rear gantries 103, and the trolley movement space 102 is formed between the two left and right gantries 103. Therefore, the material feeding and bagging work station 101 and the material feeding and bagging device 20 are formed at the joint of the part of the fixed frame 10 extending in the front-rear direction and the part of the fixed frame 10 extending in the left-right direction, and are located at the middle position of the part of the fixed frame 10 extending in the left-right direction.

[0171] Further, in the above-mentioned second and third embodiments of the middle-feeding package sorting system, the moving mode of the sorting trolley 30 is translation along the extension direction of the fixed frame 10 and translation along the up-down direction. Based on this, the sorting trolley 30 preferably adopts the structure of two trolleys, i.e. the sorting trolley 30 includes a horizontal translation trolley translating along the extension direction of the fixed frame 10 and a vertical translation trolley translating along the up-down direction, and the fixed frame 10 of each sorting subsystem is provided with one vertical translation trolley and a plurality of horizontal translation trolleys, the plurality of horizontal translation trolleys are distributed up and down corresponding to the up-down multiple layers of the material drop chute 41 in the sorting subsystem, and the vertical translation trolley is distributed at the outer circumferential side of the material feeding and packaging device 20. During the sorting operation, the vertical translation trolley receives the material feeding and packaging device 20, the material feeding and packaging device 20 outputs the sorted objects to the vertical translation trolley, the vertical translation trolley moves up and down to the horizontal translation trolley corresponding to the layer where the target material drop chute 41 is located, and outputs the sorted objects to the horizontal translation trolley, the horizontal translation trolley moves to the target material drop chute 41, and unloads the sorted objects thereon, and the sorted objects fall into the corresponding material receiving frame 51 through the material drop chute 41.

[0172] Further, the material feeding and packaging device 20 for the above-mentioned multiple embodiments of the middle-feeding package sorting system has multiple preferred embodiments.

[0173] Embodiment one of the material feeding and packaging device 20

[0174] As shown in FIGS. 14 and 15, the feeding and bagging device 20 of the first embodiment includes a feeding and bagging frame 21 and a plurality of feeding belt conveying mechanisms 22 mounted on the feeding and bagging frame 21. The number of the feeding belt conveying mechanisms 22 can be two, three or more, which is determined according to actual needs. The feeding and bagging frame 21 can be fixedly connected with the fixed frame 10 or can be separately fixed and installed by anchor bolts. The conveying direction of the feeding belt conveying mechanism 22 is forward conveying. Each feeding belt conveying mechanism 22 includes a bagging conveying support, a pair of bagging rollers 222 rotatably mounted on the front and rear sides of the bagging conveying support, and a bagging conveying belt 223 connected to the pair of bagging rollers 222. The bagging rollers 222 can be driven by a separate bagging driving source 221 (such as a motor) or can be electric rollers. The bagging conveying support is the machine seat frame 211. In the embodiment shown in FIGS. 14 and 15, each feeding belt conveying mechanism 22 is provided with a bagging driving source 221. The pair of bagging rollers 222 in each feeding belt conveying mechanism 22 are a driving roller 2221 and a driven roller 2222, respectively. The bagging driving source 221 is in transmission connection with the driving roller 2221. The bagging driving sources 221 of the plurality of feeding belt conveying mechanisms 22 are independent of each other. The conveying direction of the sorted articles conveyed along the bagging conveying belt 223 is forward conveying. The plurality of feeding belt conveying mechanisms 22 are sequentially connected from back to front and are distributed in a stepped manner from high to low. The feeding belt conveying mechanism 22 distributed on the last side is the highest, and the feeding belt conveying mechanism 22 distributed on the front side is the lowest. In addition, the two adjacent feeding belt conveying mechanisms 22 are arranged closely.

[0175] In the feeding and bagging device 20 of the first embodiment, each feeding belt conveying mechanism 22 is driven by an independent bagging driving source 221, so that the conveying speed of the bagging conveying belt 223 of each feeding belt conveying mechanism 22 is independently controlled, thereby better controlling the buffering of the sorted articles on the plurality of feeding belt conveying mechanisms 22 and avoiding the excessive accumulation of the sorted articles at the front end of the feeding and bagging device 20, thereby improving the efficiency of the device. Meanwhile, the plurality of feeding belt conveying mechanisms 22 are arranged in a stepped manner, and the heights of the plurality of feeding belt conveying mechanisms 22 are sequentially lowered from back to front, that is, the two adjacent feeding belt conveying mechanisms 22 are vertically staggered, which can better enable the two adjacent feeding belt conveying mechanisms 22 to be arranged closely and reduce the gap between the two adjacent feeding belt conveying mechanisms 22, thereby avoiding the dropping of the articles. In addition, after the plurality of feeding belt conveying mechanisms 22 are arranged in a stepped manner from high to low, the middle part of the bagging conveying belt 223 is avoided from forming a groove, thereby avoiding the undesirable phenomenon of the light sorted articles jumping on the bagging conveying belt 223 and ensuring the reliability of feeding.

[0176] Preferably, the number of the upper feeding belt conveying mechanisms 22 in the upper feeding and bagging device 20 is determined according to actual needs, which can be 2 groups, 3 groups, 4 groups or more; in the embodiment shown in FIG. 14, the upper feeding belt conveying mechanisms 22 are 3 groups.

[0177] Further, the preferred structure of the upper feeding and bagging rack 21 is as follows: as shown in FIG. 14, the upper feeding and bagging rack 21 includes a base frame 211 and a pair of base baffles 212 fixed on the upper end of the base frame 211, the pair of base baffles 212 are oppositely distributed on the left and right sides of the bagging conveying belt 223 of each group of the upper feeding belt conveying mechanisms 22 along the direction perpendicular to the conveying direction of the bagging conveying belt 223, and at the same time, the base baffles 212 are also higher than the bagging conveying belt 223 of each group of the upper feeding belt conveying mechanisms 22. By arranging the base baffles 212, it can avoid the sorted items on the bagging conveying belt 223 from falling from the left and right sides, and improve the reliability of the forward conveying of the sorted items.

[0178] Further, as shown in FIG. 14, each group of the upper feeding belt conveying mechanisms 22 also includes a detection unit installed on the upper feeding and bagging rack 21, which is used to detect whether there is an item passing through the bagging conveying belt 223 of the group of the upper feeding belt conveying mechanisms 22. In this way, the first sorted item passing forward and the last sorted item passing forward on the upper feeding and bagging device 20 can be detected for sorting start control and sorting close control; at the same time, the length of the conveyed sorted items on the upper feeding and bagging device 20 can also be detected, and when the length of the sorted items exceeds a threshold value, it is judged as misplacement, at which time an alarm will be given, thereby improving the operation safety.

[0179] Preferably, as shown in FIG. 14, the detection unit includes a grating sensor 23 fixed outside the base baffle 212 and a detection opening 213 opened in the base baffle 212, which allows the grating sensor 23 to be exposed. In addition, in each group of the upper feeding belt conveying mechanisms 22, the bottom of the detection opening 213 is flush with the top of the bagging conveying belt 223, which can more reliably detect whether there is an item passing through the bagging conveying belt 223.

[0180] Further, as shown in FIG. 14, along the conveying direction of the bagging conveying belt 223 for conveying the sorted items forward, a material taking avoidance area 214 is arranged at the head end (i.e. the front end) of the base baffle 212, which avoids the base baffle 212 interfering with the material taking of the sorting trolley 30 in the sorting system.

[0181] Further, as shown in Fig. 14, the package driving source 221 is distributed in a staggered manner with the driving roller 2221, and each set of the upper feeding belt conveying mechanism 22 further comprises a transmission unit, and the package driving source 221 is connected with the driving roller 2221 through the transmission unit. Through the staggered distribution structure of the package driving source 221 and the driving roller 2221, the size of the upper feeding package equipment 20 in the left-right direction can be reduced, and the installation of the upper feeding package equipment 20 in the sorting system is facilitated. Preferably, the transmission unit comprises a third driving pulley 224 fixed on the motor shaft of the package driving source 221, a third driven pulley 225 fixed on the end of the driving roller 2221, and a transmission belt 226 connected on the outer periphery of the third driving pulley 224 and the third driven pulley 225.

[0182] Further, as shown in Fig. 14 and Fig. 15, each set of the upper feeding belt conveying mechanism 22 further comprises an adjusting unit, and the adjusting unit comprises an adjusting long slot 215 opened in the upper feeding package rack 21, an adjusting plate 24 fixed to the upper feeding package rack 21, and an adjusting screw 25 rotatably threaded in the adjusting plate 24, and the adjusting long slot 215 and the adjusting screw 25 extend straight forward and backward along the conveying direction of the package conveying belt 223; the driven roller 2222 comprises a roller shaft 2223 and a roller rotatably installed on the outer periphery of the roller shaft 2223, and the two ends of the roller shaft 2223 are clamped in the adjusting long slot 215 and are threadedly connected with the adjusting screw 25. By rotating the adjusting screw 25, the forward and backward positions of the roller shaft 2223 of the driven roller 2222 in the adjusting long slot 215 can be adjusted, and the forward and backward positions of the driven roller 2222 are adjusted, and the tension of the package conveying belt 223 in the set of the upper feeding belt conveying mechanism 22 is adjusted, so that the set of the upper feeding belt conveying mechanism 22 can more reliably convey the sorted articles forward.

[0183] Embodiment two of the upper feeding package equipment 20

[0184] As shown in Fig. 16, the embodiment two of the upper feeding package equipment 20 comprises the upper feeding package rack 21 provided with the conveying assembly mounting area 216, and the array of the upper feeding belt conveying mechanisms 22 assembled in the conveying assembly mounting area 216, and the conveying direction of the upper feeding belt conveying mechanism 22 is the conveying direction of the upper feeding package equipment 20, which is the forward direction. The array of the upper feeding belt conveying mechanisms 22 are arranged forward and backward along the conveying direction thereof, and the number of the upper feeding belt conveying mechanisms 22 assembled in a single conveying assembly mounting area 216 is determined according to actual needs, which can be two sets, three sets, or more sets; in the embodiment shown in Fig. 16, two sets of the upper feeding belt conveying mechanisms 22 are assembled in a single conveying assembly mounting area 216.

[0185] As shown in FIGS. 17-20, the upper feeding and bagging rack 21 is fixed with a rack baffle 212 on both sides of the conveying assembly installation area 216, and the rack baffle 212 is part of the upper feeding and bagging rack 21. Each set of upper feeding belt conveying mechanism 22 includes a bagging driving source 221, a pair of bagging rollers 223 arranged side by side in front and back along the conveying direction, and a bagging conveying belt 223 connected to the outer periphery of the pair of bagging rollers 223. The pair of bagging rollers 223 are arranged at the same height, so that the bagging conveying belt 223 has a conveying plane connected to the upper ends of the pair of bagging rollers 223. The left and right ends of the bagging rollers 223 are rotatably supported in the rack baffle 212 of the upper feeding and bagging rack 21 and are in transmission connection with the bagging driving source 221. The triangular area 218 is formed between the two adjacent sets of upper feeding belt conveying mechanism 22. The bagging rollers 223 are small-diameter rollers with a diameter of not more than 40 mm, i.e., the bagging rollers 223 are rollers with an unconventional outer diameter size, but small-diameter rollers much smaller than the conventional outer diameter size.

[0186] In the upper feeding and bagging equipment 20, when the bagging driving source 221 operates, the pair of bagging rollers 223 rotates, and at the same time, the bagging conveying belt 223 rotates. The sorting personnel place a plurality of to-be-sorted sorted objects on the conveying plane of the bagging conveying belt 223 of the last set of upper feeding belt conveying mechanism 22 in the upper feeding and bagging equipment 20, and the bagging conveying belt 223 of the set of upper feeding belt conveying mechanism 22 conveys the sorted objects forward. In particular, the bagging rollers 223 in the present application are small-diameter rollers with a diameter of not more than 40 mm. In this way, the size of the triangular area 218 formed between the two adjacent sets of upper feeding belt conveying mechanism 22 can be greatly reduced, the connection between the two adjacent sets of upper feeding belt conveying mechanism 22 is more gentle, the sorted objects with small volume are effectively prevented from being stuck in the triangular area 218, the sorted objects conveyed forward by the latter set of upper feeding belt conveying mechanism 22 can be smoothly transferred to the former set of upper feeding belt conveying mechanism 22, the probability of dropping is greatly reduced, and finally the reliability and accuracy of sorting of the sorted objects are ensured. Finally, the sorted objects are conveyed forward by the bagging conveying belt 223 of the plurality of sets of upper feeding belt conveying mechanism 22 and are conveyed to the front end of the upper feeding and bagging equipment 20. Then, the sorted objects are caught by the sorting trolley 30. Therefore, the rear end of the upper feeding and bagging equipment 20 is the feeding end of the sorted objects, and the front end of the upper feeding and bagging equipment 20 is the discharging end of the sorted objects.

[0187] In the embodiment of the present application, the plurality of sets of the feeding belt conveying mechanism 22 each adopts an independent feeding drive source 221, so that the conveying speed of the feeding conveying belt 223 of each set of the feeding belt conveying mechanism 22 is independently controlled, thereby better controlling the buffering of the sorted items on the plurality of sets of the feeding belt conveying mechanism 22, avoiding excessive accumulation of the sorted items at the front end of the feeding and bagging device 20, and thereby improving the efficiency of the device.

[0188] Preferably, the diameter of the feeding roller 223 in the present application is 28-22 mm, which can effectively avoid the smaller sorted items from being stuck in the triangular area 218, and can also ensure better supporting performance of the feeding conveying belt 223.

[0189] Further, based on the structure of the feeding roller 223 adopting a small-diameter roller, the contact area between the feeding roller 223 and the feeding conveying belt 223 is inevitably reduced, and the friction between the feeding roller 223 and the feeding conveying belt 223 is also inevitably reduced. If the structure of the feeding drive source 221 is adopted to drive the feeding roller 223 to rotate and drive the feeding conveying belt 223 to rotate, the rotational speed of the feeding conveying belt 223 cannot meet the requirements. Therefore, the driving structure of the feeding drive source 221 driving the feeding conveying belt 223 to rotate in the present application is preferably as follows: as shown in FIGS. 17-20, the feeding drive source 221 is a motor, each set of the feeding belt conveying mechanism 22 further includes a transmission roller 26, a first pulley 271 fixed on the motor shaft of the feeding drive source 221, a second pulley 272 fixed on the transmission roller 26, and a pulley transmission synchronous belt 273 connected between the first pulley 271 and the second pulley 272, the transmission roller 26 is parallel to the feeding roller 223, and the left and right ends of the transmission roller 26 are rotatably supported in the machine seat baffle 212 of the feeding and bagging frame 21; the transmission roller 26 is a roller with an unconventional outer diameter, and the diameter of the transmission roller 26 is greater than the diameter of the feeding roller 223, and preferably, the diameter of the transmission roller 26 is 3-5 times greater than the diameter of the feeding roller 223; the transmission roller 26 is in contact with the inner circumferential surface of the feeding conveying belt 223 and is distributed below the pair of feeding rollers 223. In this way, the feeding drive source 221 drives the transmission roller 26 to rotate through the first pulley 271, the second pulley 272 and the pulley transmission synchronous belt 273, and the transmission roller 26 and the feeding conveying belt 223 have a larger contact area and a larger friction, and the feeding conveying belt 223 is driven to rotate by the transmission roller 26, which not only improves the reliability of the rotational movement of the feeding conveying belt 223 and ensures that the feeding conveying belt 223 accurately forwards the sorted items, but also ensures that the rotational speed of the feeding conveying belt 223 meets the design requirements.

[0190] Further, as shown in FIGS. 17 and 19, a pair of feeding rollers 223 and the transmission roller 26 form a motor installation area 28 on the outer peripheral side of the feeding conveyor belt 223, and the feeding driving source 221 is located in the motor installation area 28 and fixed to the base plate 212 of the feeding frame 21, facilitating the installation of the feeding driving source 221 and making the overall structure more compact and reducing the overall space occupied by the feeding and sorting device 20.

[0191] Further, as shown in FIGS. 17 to 19, each set of feeding and sorting device 22 further comprises a tensioning and adjusting roller 29 and a tensioning and adjusting assembly, the tensioning and adjusting roller 29 is arranged in the motor installation area 28; the tensioning and adjusting roller is parallel to the transmission roller 26, the tensioning and adjusting roller 29 comprises a roller shaft part 291 and a tensioning cylinder part 292 rotatably assembled on the roller shaft part 291, the tensioning cylinder part 292 is in contact with the outer peripheral surface of the feeding conveyor belt 223, and the roller shaft part 291 is movably installed on the feeding frame 21 through the tensioning and adjusting assembly. In this way, the front and rear positions of the tensioning and adjusting roller 29 are adjusted by adjusting the front and rear positions of the roller shaft part 291 through the tensioning and adjusting assembly, and then the tensioning degree of the feeding conveyor belt 223 is adjusted. Preferably, the tensioning and adjusting assembly can adopt a bolt and nut structure: the tensioning and adjusting assembly comprises an adjusting seat 217 fixed to the feeding frame 21, an adjusting groove 2171 extending front and back and arranged in the feeding frame 21, an adjusting bolt extending front and back, and a locking nut connected to the adjusting bolt, the adjusting bolt and the locking nut are not shown in the figure, the roller shaft part 291 movably penetrates the adjusting groove 2171, the adjusting bolt penetrates the roller shaft part 291 and the adjusting seat 217, and the locking nut abuts against the outer peripheral side of the roller shaft part 291.

[0192] Further, as shown in FIGS. 17 and 19, the outer peripheral surface of the feeding conveyor belt 223 is provided with at least one circumferentially extending limiting protrusion 2221; when there are several limiting protrusions 2221, the several limiting protrusions 2221 are arranged side by side in the left and right directions perpendicular to the conveying direction of the feeding and sorting device 22. The limiting protrusion 2221 limits the left and right directions of the sorted articles conveyed forward on the feeding conveyor belt 223, improving the accuracy of conveying the sorted articles forward. The number of limiting protrusions 2221 on each feeding conveyor belt 223 is determined according to actual needs, and in the embodiment, there are two limiting protrusions 2221 on the left and right sides.

[0193] Further, as shown in FIG. 16, the conveying assembly installation area 216 in the feeding and bagging rack 21 has a plurality of conveying assembly installation areas 216, and the plurality of conveying assembly installation areas 216 are arranged side by side in the direction perpendicular to the conveying direction of the feeding belt conveying mechanism 22. Each of the conveying assembly installation areas 216 is equipped with a plurality of feeding belt conveying mechanisms 22. In the embodiment shown in FIG. 14, the conveying assembly installation area 216 in the feeding and bagging rack 21 has two conveying assembly installation areas 216, and each of the conveying assembly installation areas 216 is equipped with two feeding belt conveying mechanisms 22. After the arrangement, the feeding and bagging efficiency of the sorted items can be improved, and the sorting efficiency of the sorting system can be ultimately improved.

[0194] Further, as shown in FIG. 20, along the conveying direction of the feeding belt conveying mechanism 22, the plurality of feeding belt conveying mechanisms 22 are arranged in a stepped manner from back to front and from high to low, that is, the feeding belt conveying mechanisms 22 arranged at the back are higher than the feeding belt conveying mechanisms 22 arranged at the front. In this way, after the two adjacent groups of feeding belt conveying mechanisms 22 are arranged in a staggered manner from high to low, the gap between the two adjacent groups of feeding belt conveying mechanisms 22 can be better reduced, and the triangular area 218 can be smaller, and the dropping prevention can be better achieved. At the same time, after the plurality of groups of feeding belt conveying mechanisms 22 are arranged, the middle part of the feeding and bagging conveying belt 223 can be avoided to form a groove, so that the adverse phenomenon that the sorted items are bounced on the feeding and bagging conveying belt 223 can be avoided, and the feeding reliability can be ensured.

[0195] Further, the sorting trolley 30 used in the plurality of embodiments of the middle feeding and bagging sorting system has a plurality of preferred embodiments.

[0196] The sorting trolley 30 has the following preferred embodiments.

[0197] As shown in FIG. 21, the sorting trolley 30 includes a trolley frame 31 and a material moving belt conveying mechanism installed on the trolley frame 31. The conveying direction of the material moving belt conveying mechanism is forward and backward, and the conveying direction of the material moving belt conveying mechanism is perpendicular to the extension direction of the fixed frame 10 and consistent with the width direction of the fixed frame 10. In the first embodiment of the middle feeding and bagging sorting system with the single trolley structure, the double trolley structure, and the four trolley structure, the trolley frame 31 is movably installed on the translation moving frame 63 and fixedly connected with the second synchronous belt 673. In the second and third embodiments of the middle feeding and bagging sorting system, the trolley frame 31 of the horizontal moving trolley is movably installed on the fixed frame 10, and the trolley frame 31 of the vertical moving trolley is movably installed on the fixed frame 10. The sorting trolley 30 takes the sorted items from the feeding and bagging equipment 20 in the following manner: the sorting trolley 30 moves to the position below the front end of the feeding and bagging equipment 20, a plurality of feeding belt conveying mechanisms 32 convey the sorted items forward, the sorted items fall from the front end of the feeding belt conveying mechanism 32, and then fall on the sorting trolley 30 below, thereby completing the taking of the sorted items.

[0198] As shown in FIG. 21 and FIG. 22, the material moving belt conveying mechanism comprises a conveying driving source, a pair of sorting rollers 32 rotatably mounted on the front and rear ends of the trolley 31, and a sorting conveying belt 33 connected to the front and rear sorting rollers 32. The sorting rollers 32 are driven to rotate by the conveying driving source (such as a motor), or the sorting rollers 32 are electric rollers, to realize the forward and reverse movement of the sorting conveying belt 33, so as to realize the forward conveying of the sorted articles on the sorting conveying belt 33 to the material falling chute 41 on the front side of the fixed frame 10, or the backward conveying of the sorted articles on the sorting conveying belt 33 to the material falling chute 41 on the rear side of the fixed frame 10.

[0199] Preferably, as shown in FIG. 21 and FIG. 22, the sorting trolley 30 further comprises a pair of side limiting stop pieces 34, which are both fixed to the trolley 31 and distributed on the left and right sides of the sorting conveying belt 33 in a direction perpendicular to the conveying direction of the sorting conveying belt 33. The side limiting stop pieces 34 are in the form of a baffle. In addition, at least two stop bars 35 are arranged on the sorting conveying belt 33, each of which extends left and right, and several stop bars 35 are arranged in the rotation direction (i.e. the conveying direction) of the sorting conveying belt 33. The structure of the side limiting stop pieces 34 and the stop bars 35 ensures that the goods will not accidentally fall off the sorting conveying belt 33. The specific cross-sectional shape of the stop bar 35 is not limited, which can be in the form of a bar, a plate, a block, a column or an irregular shape, etc. The stop bar 35 has the following two functions: 1. increasing the surface friction of the sorting conveying belt 33, so that the sorted articles thereon are not easy to slip; 2. when the sorted articles are in the form of a sphere, a hemisphere or other special-shaped articles, the stop bar 35 has the function of limiting and stopping the sorted articles, so that the special-shaped sorted articles are not easy to move on the sorting conveying belt 33, ensuring the accuracy of material moving.

[0200] Further, the sorting trolley 30 also has a detection assembly for zero control of the sorting conveying belt 33. The detection assembly has the following two preferred structures.

[0201] I. The detection assembly is composed of a metal sheet and a proximity switch. The metal sheet is fixed on the left side or the right side of one of the plurality of bars 35, and the proximity switch is fixed on the frame 31 and is distributed on the same side as the bars 35. The proximity switch can sense the metal sheet. In the initial state, the proximity switch can detect the metal sheet, and the proximity switch is triggered. When the sorting trolley 30 receives the sorted objects and moves to the corresponding discharge chute 41, the proximity switch is in the triggered state. Then, the conveying driving source is actuated to drive the sorting conveyor 33 to operate, and the sorted objects are unloaded. During this process, the metal sheet first moves away from the proximity switch and then gradually approaches the proximity switch. When the state of the proximity switch changes from being triggered to not being triggered and then to being triggered again, it indicates that the unloading is complete. Then, the conveying driving source is reversed to drive the sorting conveyor 33 to operate in reverse, and the metal sheet again moves away from the proximity switch and then gradually approaches the proximity switch. The state of the proximity switch again changes from being triggered to not being triggered and then to being triggered. At this time, the conveying driving source stops, and the sorting conveyor 33 is reset to zero.

[0202] II. The detection assembly is composed of a photoelectric sensor and a reflective plate. Both the photoelectric sensor and the reflective plate are fixed on the frame 31 and are distributed in the upward and downward directions. One of the photoelectric sensor and the reflective plate is distributed between the upper and lower portions of the sorting conveyor 33, and the other is distributed on the lower side of the sorting conveyor 33. The sorting conveyor 33 passes between the photoelectric sensor and the reflective plate, and the sorting conveyor 33 is provided with a light-transmitting hole. Through the rotation of the sorting conveyor 33, the light-transmitting hole can move to a position opposite the reflective plate. In the initial state, the light-transmitting hole is opposite the reflective plate, the light is not blocked, and the photoelectric sensor is triggered. When the sorting trolley 30 receives the sorted objects and moves to the corresponding discharge chute 41, the proximity switch is in the triggered state. Then, the conveying driving source is actuated to drive the sorting conveyor 33 to operate, and the sorted objects are unloaded. During this process, the light-transmitting hole moves away from the reflective plate and then approaches the reflective plate. When the state of the photoelectric sensor changes from being triggered to not being triggered and then to being triggered again, it indicates that the unloading is complete. Then, the conveying driving source is reversed to drive the sorting conveyor 33 to operate in reverse, and the light-transmitting hole again moves away from the reflective plate and then approaches the reflective plate. The state of the photoelectric sensor again changes from being triggered to not being triggered and then to being triggered. At this time, the conveying driving source stops, and the sorting conveyor 33 is reset to zero.

[0203] Sorting trolley 30 embodiment two

[0204] As shown in Fig. 23, the sorting trolley 30 embodiment two is based on the above-mentioned sorting trolley 30 embodiment one, and is additionally provided with a pair of main limiting stop pieces 36. The pair of main limiting stop pieces 36 are distributed at the front and rear ends of the sorting conveying belt 33 along the conveying direction of the sorting conveying belt 33, and are both installed on the trolley frame 31. The pair of side limiting stop pieces 34 are both fixed on the trolley frame 10 and are both higher than the sorting conveying belt 33. The pair of side limiting stop pieces 34 and the sorting conveying belt 33 form an inlet and an outlet at the front and rear ends of the sorting conveying belt 33. The inlet and outlet at the front side are defined as the first opening 331, and the inlet and outlet at the rear side are defined as the second opening 332. The first opening 331 and the second opening 332 both allow the goods to pass through. The pair of main limiting stop pieces 36 are respectively arranged at the first opening 331 and the second opening 332. The main limiting stop piece 36 at the front side can move towards or away from the first opening 331 to close or open the first opening 331. The main limiting stop piece 36 at the rear side can move towards or away from the second opening 332 to close or open the second opening 332. In this way, during the conveying of the goods, the pair of main limiting stop pieces 36 closes the first opening 331 and the second opening 332, the front and rear movement of the goods is blocked by the pair of main limiting stop pieces 36, and the goods cannot fall down through the first opening 331 or the second opening 332, thereby playing a role of preventing the goods from falling.

[0205] Preferably, the main limiting stop piece 36 has various movement modes, such as up and down lifting, up and down rotating, front and rear rotating, etc. The main limiting stop piece 36 can be an integral stop plate or two left and right stop plates. In the embodiment shown in Fig. 23, each main limiting stop piece 36 includes two left and right limiting gates 361. The sorting trolley 30 further includes a stop piece driving source 37 in transmission connection with each limiting gate 361. The stop piece driving source 37 is fixed on the trolley frame 31 and can be a cylinder, a motor, an electromagnet, etc. The stop piece driving source 37 drives the limiting gate 361 connected thereto to lift up and down, or to rotate up and down, or to rotate front and rear. When the stop piece driving source 37 drives the limiting gate 361 to move to open the first opening 331 or the second opening 332, the goods are allowed to enter or move out of the sorting trolley 30. When the stop piece driving source 37 drives the limiting gate 361 to move to close the first opening 331 or the second opening 332, the goods on the sorting trolley 30 are prevented from falling down, thereby playing a role of preventing the goods from falling. In the embodiment shown in Fig. 23, the movement mode of the limiting gate 361 is rotating.

[0206] In addition, in the sorting trolley 30 embodiment two, the sorting conveying belt 33 can be provided with the stop strip 35 in the sorting trolley 30 embodiment one, or can be provided without the stop strip 35 as shown in Fig. 23. When the sorting conveying belt 33 is provided with the stop strip 35, the stop strip 35 can be considered as a main limiting stop piece 36 fixed on the sorting conveying belt 33.

[0207] Sorting trolley 30 embodiment three

[0208] Sorting trolley 30 embodiment three is different from sorting trolley 30 embodiment two in that the specific structure of the main limiting stopper 36 is not the same. As shown in FIG. 24, in sorting trolley 30 embodiment three, as shown in FIGS. 24, 27 and 28, the sorting trolley 30 further comprises a stopper lifting driving source and a stopper lifting transmission unit, both of which are mounted on the trolley frame 10, the pair of main limiting stoppers 36 are both a whole stopper structure, and the pair of main limiting stoppers 36 are both installed on the trolley frame 10 in a lifting manner. The stopper lifting driving source is drivingly connected to the pair of main limiting stoppers 36 through the stopper lifting transmission unit and drives the pair of main limiting stoppers 36 to synchronously lift. When the sorting trolley 30 moves to the package unit to take the articles, and when the sorting trolley 30 moves to the material dropping chute 61 to unload the articles, the stopper lifting driving source drives the front and rear two main limiting stoppers 36 to simultaneously and synchronously move up through the stopper lifting transmission unit, and the main limiting stopper 36 moves away from the inlet and outlet, so that the main limiting stopper 36 does not play a blocking role, and then the articles are moved into the sorting conveyor belt 33 through the inlet and outlet, or the articles are moved out of the sorting conveyor belt 33 through the inlet and outlet. When the sorting trolley 30 carrying the articles is in motion, the stopper lifting driving source drives the front and rear two main limiting stoppers 36 to simultaneously and synchronously move down through the stopper lifting transmission unit until the main limiting stopper 36 blocks the outside of the inlet and outlet, so that the main limiting stopper 36 plays a blocking role to prevent the articles on the sorting conveyor belt 33 from falling off the inlet and outlet, and better plays a role of preventing articles from falling off. The present application uses one stopper lifting driving source to drive two main limiting stoppers 36 to simultaneously and synchronously lift, thereby achieving the purpose of reducing cost. Moreover, the movement mode of the main limiting stopper 36 in the present application is lifting, i.e. translation in the up-down direction, which, compared with the up-down rotation movement mode, reduces the requirement for the space above the main limiting stopper 36, so that the sorting trolley 30 can be better assembled in the multi-layer track type intelligent sorting device.

[0209] Further, as shown in FIGS. 24, 27 and 28, the conveying driving source 313 driving the sorting conveyor belt 33 to rotate is fixed on the outer side of the left side limiting stopper 34, the conveying driving source 313 is drivingly connected to the pair of sorting rollers 32 through a conveying transmission assembly, and the conveying transmission assembly can be a synchronous belt pulley assembly.

[0210] Further, as shown in FIGS. 24 and 27, the stopper lifting driving source is a motor, the stopper lifting transmission unit comprises a first transmission assembly 38 drivingly connected to the motor shaft of the stopper lifting driving source, and a second transmission assembly 39 drivingly connected to each main limiting stopper 36, and the two groups of second transmission assemblies 39 are drivingly connected to the first transmission assembly 38. The first transmission assembly 38 can adopt a gear and rack assembly, a chain wheel and chain assembly, or a synchronous belt pulley assembly, and the second transmission assembly 39 can adopt a screw and nut assembly, a ball screw assembly, or a worm and gear assembly.

[0211] The preferred structure of the first transmission assembly 38 is that, as shown in FIG. 24, FIG. 25 and FIG. 27, the first transmission assembly 38 is distributed on the outer side of the right side limiting stopper 34, the second transmission assembly 39 comprises a transmission rotating shaft 391 rotatably supported in the vehicle frame 10; the first transmission assembly 38 comprises a fourth driving pulley 381 fixed on the motor shaft of the stopper lifting driving source, a fourth driven pulley 382 fixed on the transmission rotating shaft 391 in each second transmission assembly 39, and a third synchronous belt 383 connected to the outer periphery of the fourth driving pulley 381 and the two fourth driven pulleys 382. In this way, when the stopper lifting driving source drives the fourth driving pulley 381 to rotate, the transmission rotating shafts 391 in the front and rear two groups of second transmission assemblies 39 are simultaneously and synchronously driven to rotate through the front and rear two fourth driven pulleys 382 and the third synchronous belt 383, thereby driving the front and rear two groups of second transmission assemblies 39 to synchronously operate, and realizing the synchronous upward movement or downward movement of the front and rear two main limiting stoppers 36.

[0212] Further, as shown in FIG. 24, FIG. 25 and FIG. 27, the first transmission assembly 38 further comprises a motor mounting bracket 384, a tensioning adjusting groove 385 opened in the motor mounting bracket 384, and a tensioning adjusting bolt threaded in the tensioning adjusting groove 385, the stopper lifting driving source is fixed to the motor mounting bracket 384, the motor mounting bracket 384 is locked on the vehicle frame 10 through the tensioning adjusting bolt, and the tensioning adjusting groove 385 is a waist-shaped groove extending straightly leftward and rightward. In this way, after the tensioning adjusting bolt is loosened, the leftward and rightward positions of the motor mounting bracket 384 can be adjusted, that is, the leftward and rightward positions of the stopper lifting driving source and the fourth driving pulley 381 are adjusted, and the third synchronous belt 383 is tensioned and adjusted; after the adjustment is completed, the tensioning adjusting bolt is tightened. Preferably, the first transmission assembly 38 further comprises two idlers 386 rotatably mounted on the vehicle frame 10, the two idlers 386 are distributed on the front and rear sides of the fourth driving pulley 381 and abut against the outer side of the third synchronous belt 383. The arrangement of the idlers 386 can make the left and right two parts of the third synchronous belt 383 extending frontward and rearward in a parallel state.

[0213] The preferred structure of the second transmission assembly 39 is as follows: as shown in FIG. 24, FIG. 26 and FIG. 28, each of the second transmission assemblies 39 includes two transmission lead screws 392 distributed at the left and right ends of the main limiting stopper 36, a transmission nut 393 connected with the transmission lead screws 392, a fifth driven pulley 394 fixed at the lower end of each transmission lead screw 392, and a fourth synchronous belt 395, both of the transmission lead screws 392 are vertically arranged and rotatably installed on the frame 10 through a bearing seat, the right transmission lead screw 392 close to the first transmission assembly 38 constitutes the transmission rotating shaft 391, then the right transmission lead screw 392 is connected with the first transmission assembly 38, i.e. the upper end of the right transmission lead screw 392 is fixed with the fourth driven pulley 382; the fourth synchronous belt 395 is connected with the outer periphery of the left and right fifth driven pulleys 394 in the second transmission assembly 39, and the transmission nut 393 is connected with the main limiting stopper 36. In this way, the stopper lifting driving source drives the right transmission lead screws 392 in the front and rear second transmission assemblies 39 to rotate simultaneously and synchronously through the first transmission assembly 38, the right transmission lead screws 392 drive the left transmission lead screws 392 to rotate simultaneously and synchronously through the second driven pulleys 394 and the fourth synchronous belt 395, and then drive the synchronous upward or downward movement of the front and rear main limiting stoppers 36 through the transmission nut 393.

[0214] Further, as shown in FIG. 26, a matching gap 396 is provided between the transmission nut 393 and the main limiting stopper 36, the transmission nut 393 is fixed with a front and rear extending connecting bolt 397, and the connecting bolt 397 is assembled in the main limiting stopper 36 through a thrust bearing. The thrust bearing and the matching gap 396 allow the main limiting stopper 36 to have a certain amount of front and rear floating relative to the transmission nut 393, so as to eliminate the deviation and avoid the stuck phenomenon under the premise of ensuring the synchronization.

[0215] Further, the preferred embodiment of the material falling mechanism 40 for the above-mentioned multiple embodiments of the middle bag sorting system is described as follows.

[0216] As shown in FIG. 1 and FIG. 29, the blanking mechanism 40 comprises a chute bottom plate 42 mounted on the frame 10, and a plurality of chute baffles 424 mounted on the chute bottom plate 42, and a plurality of blanking chutes 41 are formed between the chute bottom plate 42 and the plurality of chute baffles 424. The chute bottom plate 42 is rectangular, and the chute bottom plate 42 comprises a first side edge 4211 and a second side edge 4212 oppositely arranged in front and back, the first side edge 4211 is close to the sorting trolley 30, that is, the inner side edge of the chute bottom plate 42, and the second side edge 4212 is away from the sorting trolley 30, that is, the outer side edge of the chute bottom plate 42; at the same time, the height of the first side edge 4211 is greater than the height of the second side edge 4212. In addition, the chute bottom plate 42 is inclined downward outwardly, so that the blanking chute 41 is also inclined downward outwardly, and the goods falling on the chute bottom plate 42 from the first side edge 4211 will slide to the second side edge 4212 under the action of gravity, and then fall into the receiving equipment 50. Preferably, the chute bottom plate 42 further comprises a third side edge and a fourth side edge oppositely arranged left and right, and a connecting plate 44 is arranged on each of the third side edge and the fourth side edge, and the chute bottom plate 42 is mounted on the frame 10 through the connecting plate 44.

[0217] During the sorting operation, the sorting trolley 30 first moves to the feeding and bagging equipment 20 to receive the materials provided by the feeding and bagging equipment 20, and then the sorting trolley 30 with the materials moves to a designated position on the chute bottom plate 42, and then the sorting trolley 30 unloads the materials, and the materials fall into the receiving equipment 50 through the chute bottom plate 42 to complete the blanking. In order to prevent the materials from falling into the gap between the sorting trolley 30 and the chute bottom plate 42 and ensure the smooth completion of blanking, as shown in FIG. 29, a flexible blocking piece 43 is arranged on the first side edge 4211 of the chute bottom plate 42. The flexible blocking piece 43 not only helps to shorten the gap between the sorting trolley 30 and the chute bottom plate 42 to prevent the materials from falling, but also automatically rebounds in the process of colliding with the sorting trolley 30, and has the characteristics of not being easily damaged. Specifically, the flexible blocking piece 43 is made of a flexible material with good resilience such as silicone or rubber. In addition, the light materials on the sorting trolley 30 are more likely to fall than the heavy materials; when the light sorted materials fall off the sorting trolley 30, the light sorted materials will fall on the flexible blocking piece 43, and the flexible blocking piece 43 itself has a certain bearing capacity, so the bearing capacity of the flexible blocking piece 43 can also ensure that the sorted materials enter the chute bottom plate 42, and ensure the smooth completion of blanking.

[0218] Further, when the sorting trolley 30 needs to unload the materials carried by itself onto the chute bottom plate 42, the height of the sorting trolley 30 is greater than the height of the first side edge 4211, so that there is a height difference between the sorting trolley 30 and the chute bottom plate 42. The height difference can make the materials leaving the sorting trolley 30 move in a parabolic manner, greatly increasing the possibility of the materials falling onto the chute bottom plate 42.

[0219] Further, the form of the flexible blocking piece 43 is not limited, and can include a plurality of flexible pads arranged along the first side edge 4211, or can include a plurality of flexible strips 431 arranged on the first side edge 4211 as shown in FIGS. 29-31. Compared with the flexible pad, the plurality of flexible strips 431 can not only reduce the resistance of the sorting trolley 30 during movement, but also reduce the wear of the flexible strips 431, and the overall service life is longer than that of the flexible pad.

[0220] In the above embodiment using the plurality of flexible strips 431, as shown in FIGS. 30-35, the chute bottom plate 42 includes a main plate body 421 and a bent portion 422 connected in an L shape, and the main plate body 421 includes the first side edge 4211 and the second side edge 4212, both of which extend in parallel to the length direction of the main plate body 421. The first side edge 4211 is connected to the bent portion 422. A plurality of through holes 423 are further arranged at the connection between the main plate body 421 and the bent portion 422, and the through holes 423 are arranged along the extension direction of the first side edge 4211. The blanking mechanism 40 further includes a pressing plate 46 arranged below the main plate body 421, and the pressing plate 46 includes a first plate body 441 and a second plate body 442 connected in an L shape. A plurality of groups of perforations are arranged on the first plate body 441 along the length direction of the first plate body 441, and the length direction of the first plate body 441 is parallel to the extension direction of the first side edge 4211. Each group of perforations includes a first perforation 4411 and a second perforation 4412 arranged along the width direction of the first plate body 441. As shown in FIGS. 29-31 and 36, one end of the flexible strip 431 sequentially passes through the through hole 423, the second perforation 4412, and the first perforation 4411 to form a U-shaped portion 432. The second plate body 442 is detachably connected to the bent portion 422. In this way, the flexible strip 431 can be prevented from falling off the chute bottom plate 42 during use, and the installation structure is more stable and firm.

[0221] Further, as shown in FIGS. 31, 32, 34, and 35, the second plate body 442 is provided with a connecting hole 4421, and the bent portion 422 is provided with a locking long hole 4221 extending along the width direction of the bent portion 422. The inner diameter of the connecting hole 4421 is smaller than the length of the locking long hole 4221. The connecting hole 4421 and the locking long hole 4221 are connected by a fastener, which is specifically a bolt. By adjusting the position of the fastener in the locking long hole 4221, the distance between the first plate body 441 and the main plate body 421 can be changed, which facilitates fixing the flexible strip 431 of different sizes on the chute bottom plate 42. In addition, as shown in FIG. 30, a plurality of reinforcing ribs 45 are arranged at the bottom of the main plate body 421, and the reinforcing ribs 45 specifically extend along the extension direction of the first side edge 4211. In this way, the structural strength of the main plate body 421 can be increased, which helps to bear materials of different weights.

[0222] In summary, the application shortens the moving distance of the sorting trolley 30 in the length direction of the fixed frame 10 in single sorting, and further shortens the time required for single sorting, thereby improving the sorting efficiency.

[0223] The above embodiments only illustrate the principles and effects of the present application, and are not intended to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the present application should be covered by the claims of the present application.

Claims

1. A centrally mounted package supply and sorting system, comprising a fixed frame (10) and a loading and supplying device (20), both of which are fixedly installed, at least one sorting trolley (30) movably mounted on the fixed frame (10), a plurality of blanking chutes (41) all mounted on the fixed frame (10), and a receiving device (50) arranged on the outer side of the fixed frame (10), wherein the sorting trolley (30) can reciprocate between the loading and supplying device (20) and the blanking chute (41), and the receiving device (50) has a plurality of receiving frames (51) corresponding to the blanking chutes (41), and is characterized in that: The fixed frame (10) is provided with a loading and packaging station (101), the loading and packaging equipment (20) is arranged at the loading and packaging station (101) of the fixed frame (10), and the fixed frame (10) is provided with the blanking chute (41) and the material receiving equipment (50) on different sides of the loading and packaging equipment (20).

2. The central package supply and sorting system according to claim 1, characterized in that: The fixed frame (10) is in a straight line shape, and the loading direction of the loading and packaging equipment (20) is perpendicular to the extension direction of the fixed frame (10); along the extension direction of the fixed frame (10), the loading and packaging station (101) and the loading and packaging equipment (20) are both arranged at the middle position of the fixed frame (10); The central package supply and sorting system is provided with sorting subsystems on both sides of the package supply station (101) and the package supply device (20) in a direction perpendicular to the loading direction of the package supply device (20), and each sorting subsystem includes a part of the fixed frame (10), a blanking chute (41) and a material receiving device (50).

3. The central package supply and sorting system according to claim 2, characterized in that: The central package supply and sorting system is a single-vehicle structure, and one sorting trolley (30) is configured. One sorting trolley (30) can move along the extension direction of the fixed frame (10) in the area on both sides of the loading and supply station (101).

4. The central package supply and sorting system according to claim 2, characterized in that: The central package supply and sorting system is a double-car structure, and two sorting carts (30) are configured. Both of the sorting carts (30) can move along the extension direction of the fixed frame (10) in the area on both sides of the loading and supply station (101).

5. The central package supply and sorting system according to claim 2, characterized in that: The central package supply and sorting system is a four-car structure, and the sorting trolleys (30) are configured with four, two of which are arranged in an area on one side of the fixed frame (10) along the extension direction thereof and are both movable within the area, and the remaining two sorting trolleys (30) are arranged in an area on the other side of the fixed frame (10) along the extension direction thereof and are both movable within the area.

6. The central package supply and sorting system according to any one of claims 3 to 5, characterized in that: Each of the sorting carts (30) is movably mounted on a fixed frame (10) via a set of sorting transmission mechanisms (60); Each set of sorting transmission mechanism (60) comprises a translation guide rail (61) fixed to a fixed frame (10), a translation driving source (62), a translation moving frame (63) slidingly matched with the translation guide rail (61), a longitudinal driving source (64), and a longitudinal guide rail (65) fixed to the translation moving frame (63). The translation guide rail (61) extends straight along the extension direction of the fixed frame (10), and its two ends extend to the two ends of the fixed frame (10). At the end, the longitudinal guide rail (65) extends straight up and down along the height direction of the fixed frame (10), the translation drive source (62) is transmission-connected to the translation movable frame (63), the sorting trolley (30) is slidably matched with the longitudinal guide rail (65), and the longitudinal drive source (64) is transmission-connected to the sorting trolley (30); the loading and packaging stations (101) are distributed on the movement path of the translation movable frame (63) sliding along the translation guide rail (61).

7. The central package supply and sorting system according to claim 6, characterized in that: The translation drive source (62) is a translation drive motor fixed to the fixed frame (10), and the longitudinal drive source (64) is a longitudinal drive motor fixed to the translation moving frame (63); The translation drive motor is connected to the translation moving frame (63) via a first synchronous belt transmission assembly (66), the first synchronous belt transmission assembly (66) comprising a first driving pulley (661) and a first driven pulley (662) both rotatably supported in a fixed frame (10), and a first synchronous belt (663) connected to the outer peripheries of the first driving pulley (661) and the first driven pulley (662), the translation drive motor is connected to the first driving pulley (661), and the first synchronous belt (663) is fixedly connected to the translation moving frame (63); The longitudinal drive motor is connected to the sorting trolley (30) via a second synchronous belt transmission assembly (67), the second synchronous belt transmission assembly (67) comprising a second driving pulley (671) and a second driven pulley (672) both rotatably supported in the translational moving frame (63), and a second synchronous belt (673) connected to the outer periphery of the second driving pulley (671) and the second driven pulley (672), the longitudinal drive motor is connected to the second driving pulley (671), and the second synchronous belt (673) is fixedly connected to the sorting trolley (30); The extension path of the first synchronous belt (663) and the extension path of the second synchronous belt (673) both cover the loading and packaging station (101).

8. The central package supply and sorting system according to claim 7, characterized in that: When the central package supply and sorting system is a four-car structure, two translational movable frames (63) are distributed on both sides of the loading and packaging station (101) along the extension direction of the fixed frame (10), and are distributed on one side of the fixed frame (10) along the width direction of the fixed frame (10), and share the same translation guide rail (61); the remaining two translational movable frames (63) are distributed on both sides of the loading and packaging station (101) along the extension direction of the fixed frame (10), and are distributed on the other side of the fixed frame (10) along the width direction of the fixed frame (10), and share the same translation guide rail (61); and two sets of first synchronous belt transmission assemblies (66) connected to the two translational movable frames (63) sharing the same translation guide rail (61) are staggered in the width direction of the fixed frame (10).

9. The central package supply and sorting system according to claim 1, characterized in that: The fixed frame (10) is provided with a corner on its extension path, and the loading and packaging station (101) and the loading and packaging equipment (20) are both provided at the corner of the fixed frame (10) along the extension direction of the fixed frame (10).

10. The central package supply and sorting system according to claim 9, characterized in that: The fixed frame (10) is L-shaped; along the feeding direction of the feeding and packaging equipment (20), the fixed frame (10) is provided with a sorting subsystem on the opposite side of the feeding and packaging equipment (20); along the direction perpendicular to the feeding direction of the feeding and packaging equipment (20), the fixed frame (10) is provided with a sorting subsystem on one side of the feeding and packaging equipment (20); each sorting subsystem includes a part of the fixed frame (10), a blanking chute (41) and a material receiving device (50).

11. The central package supply and sorting system according to claim 9, characterized in that: The fixed frame (10) is T-shaped; along the feeding direction of the feeding and packaging equipment (20), the fixed frame (10) is provided with a sorting subsystem on the opposite side of the feeding and packaging equipment (20); along the direction perpendicular to the feeding direction of the feeding and packaging equipment (20), the fixed frame (10) is provided with a sorting subsystem on both sides of the feeding and packaging equipment (20); each sorting subsystem includes a part of the fixed frame (10), a blanking chute (41) and a material receiving device (50).

12. The central package supply and sorting system according to any one of claims 2 or 9 to 11, characterized in that: In each of the sorting subsystems, the fixed frame (10) is provided with a blanking mechanism (40) on both sides perpendicular to its extension direction, and a trolley movement space (102) for allowing the sorting trolley (30) to move is formed between the two sets of blanking mechanisms (40); Each set of blanking mechanisms (40) includes a plurality of chute bottom plates (42) arranged side by side and fixed to a fixed frame (10), a plurality of chute baffles (424) arranged side by side along an extension direction of the fixed frame (10) are fixed to each chute bottom plate (42), and the blanking chute (41) is formed between two adjacent chute baffles (424) and the chute bottom plate (42); A flexible stopper (43) extending toward the trolley movement empty area (102) is fixed to the inner edge of each chute bottom plate (42) close to the trolley movement empty area (102).

13. The central package supply and sorting system according to claim 12, characterized in that: The flexible blocking member (43) comprises a plurality of flexible strips (431) arranged side by side along the extension direction of the fixed frame (10).

14. The central package supply and sorting system according to claim 1, characterized in that: The feeding and packaging equipment (20) comprises a fixed feeding and packaging frame (21), and a plurality of feeding belt conveyor mechanisms (22) all mounted on the feeding and packaging frame (21); each group of the feeding belt conveyor mechanisms (32) comprises a pair of packaging rollers (322) rotatably mounted on the feeding and packaging frame (21), and a packaging conveyor belt (323) connected to the pair of packaging rollers (322); the plurality of feeding belt conveyor mechanisms (22) are connected in sequence along their conveying direction, and the packaging driving sources of the plurality of feeding belt conveyor mechanisms (22) are independent of each other.

15. The central package supply and sorting system according to claim 14, characterized in that: Along the conveying direction of the feeding belt conveyor mechanism (22), multiple groups of feeding belt conveyor mechanisms (22) are distributed in a stepped manner from high to low.

16. The central package supply and sorting system according to claim 14, characterized in that: The feeding and packaging equipment (20) further comprises a grating sensor (23) arranged on the outer side of each group of feeding belt conveying mechanisms (22) and fixed to the feeding and packaging frame (21); the feeding and packaging frame (21) is provided with a detection opening (213) allowing the grating sensor (23) to be exposed.

17. The central package supply and sorting system according to claim 14, characterized in that: A triangular region (218) is formed between two adjacent groups of the feeding belt conveyor mechanisms (22), and the bag supply roller (323) is a small-diameter roller with a diameter not greater than 40 mm.

18. The central package supply and sorting system according to claim 1, characterized in that: The sorting trolley (30) comprises a frame (31) movably mounted on a fixed frame (10), and a material transfer belt conveying mechanism mounted on the frame (31); the material transfer belt conveying mechanism comprises a sorting conveyor belt (33), and a plurality of stop bars (35) arranged side by side along the length direction of the sorting conveyor belt (33) are fixed on the outer surface of the sorting conveyor belt (33).

19. The central package supply and sorting system according to claim 18, characterized in that: The sorting trolley (30) further comprises a metal sheet fixed to the side of one of the gear bars (35), and a proximity switch fixed to the vehicle frame (31), wherein the proximity switch can sense the metal sheet.

20. The central package supply and sorting system according to claim 18, characterized in that: The sorting trolley (30) further comprises a photoelectric sensor and a reflective plate fixed to the vehicle frame (31), wherein the photoelectric sensor and the reflective plate are arranged opposite each other in the vertical direction, and the sorting conveyor belt (33) passes between the photoelectric sensor and the reflective plate and is provided with a light-transmitting hole, wherein the light-transmitting hole can be moved to a position facing the reflective plate.

21. The central package supply and sorting system according to claim 18, characterized in that: The sorting trolley (20) further comprises a pair of side limit blocks (24) both mounted on the vehicle frame (21), and a pair of main limit blocks (26) both mounted on the vehicle frame (21); a first opening (231) and a second opening (232) are formed between the sorting conveyor belt (23) and the pair of side limit blocks (24); the first opening (231) and the second opening (232) are distributed at both ends of the sorting conveyor belt (23) along the conveying direction of the sorting conveyor belt (23); and the main limit block (26) is movably mounted on the vehicle frame (21) to close or open the first opening (231) and the second opening (232).

22. The central package supply and sorting system according to claim 21, characterized in that: Each of the main limit stoppers (26) comprises two limit gates (261) rotatably mounted on the vehicle frame (21); the sorting trolley (20) is provided with a stopper driving source (27) at each limit gate (261) and connected to each limit gate (261); the stopper driving source (27) is fixed to the vehicle frame (21).

23. The central package supply and sorting system according to claim 21, characterized in that: The sorting trolley (20) further comprises a lifting drive source and a lifting transmission unit mounted on the vehicle frame (21); a pair of main limit stops (26) are both mounted on the vehicle frame (21) in a liftable manner; the lifting drive source is connected to the pair of main limit stops (26) through the lifting transmission unit and drives the pair of main limit stops (26) to rise and fall synchronously.

24. A centrally placed package sorting method, characterized by: Using the central package sorting system according to any one of claims 1 to 23, the central package sorting method comprises the following steps: S1. placing a plurality of sorted objects in an orderly manner on the loading and packaging device (20), and the loading and packaging device (20) transports the sorted objects toward the fixed frame (10); S2, the sorting trolley (30) moves to the feeding and packaging equipment (20); S3, the sorting trolley (30) receives the sorted objects output by the loading and packaging equipment (20); S4, the sorting trolley (30) moves to the blanking chute (41) corresponding to the sorted object on the sorting trolley (30); S5, the sorting trolley (30) unloads the sorted objects thereon, and the sorted objects fall into the receiving frame (51) corresponding to the material chute (41) through the material chute (41); S6, the sorting trolley (30) moves back to the feeding and packaging equipment (20); S7, repeat steps S3 to S6; In the step S4 that is performed multiple times, the sorting trolley (30) can move toward the blanking chutes (41) distributed on different sides of the loading and packaging equipment (20).

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