Middle bag supplying and sorting system

Abstract

The utility model provides a middle package supplying and sorting system which comprises a fixed frame, a feeding package supplying mechanism, at least one sorting trolley movably installed on the fixed frame, a plurality of discharging sliding grooves installed on the fixed frame, and a material receiving mechanism arranged on the outer side of the fixed frame, wherein the fixed frame and the feeding package supplying mechanism are fixedly installed. The sorting trolley can do reciprocating motion between the feeding and bag supplying mechanism and the discharging sliding grooves, the material receiving mechanism is provided with a plurality of material receiving frames corresponding to the discharging sliding grooves in a one-to-one mode, a feeding and bag supplying station is arranged in the fixing frame, and the feeding and bag supplying mechanism is arranged at the feeding and bag supplying station of the fixing frame. And the fixing frame is provided with blanking chutes and receiving mechanisms on different sides of the loading and bag supplying mechanism. After the middle bag supply structure is adopted, the moving distance of the sorting trolley in the extending direction of the fixed frame during single-time sorting can be shortened, then the time needed by single-time sorting is shortened, the number of the discharging sliding grooves and the number of the material receiving mechanisms can be relatively increased, and therefore the sorting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sorting technology for goods, express parcels and other items, and in particular to a centrally located package sorting system. Background Technology

[0002] The automated parcel sorting system can automatically transport each parcel from multiple parcels to the corresponding compartment, and continuously and automatically sort large quantities of parcels. It has the advantages of high sorting efficiency and low sorting error rate, and is widely used in logistics distribution centers.

[0003] Typically, an automated parcel sorting system includes a fixed frame and a feeding mechanism, a movable frame movably mounted on the fixed frame along its length, a sorting trolley movable vertically on the movable frame along its height, and a receiving mechanism arranged along the outer side of the fixed frame along its width. The fixed frame has multiple slots (i.e., drop chutes), and the receiving mechanism has multiple receiving frames, each corresponding to one of the slots. During operation, the sorting personnel simply place multiple parcels onto the feeding mechanism. The sorting trolley moves to the feeding mechanism to pick up the parcels, then moves to the corresponding slot based on the information on the parcel. The trolley then removes the parcel, which slides down the slot into the corresponding receiving frame. The automatic sorting of multiple parcels is achieved through the reciprocating movement of the sorting trolley between the feeding mechanism and the slots.

[0004] Existing automated parcel sorting systems all employ a terminal feeding structure, where the feeding mechanism is located at the end of a fixed frame along its length. Examples include a multi-axis dual-cart automated sorting device disclosed in Chinese invention patent application number 202211171868.9, an XYZ three-axis automated sorting device disclosed in Chinese utility model patent application number 202221541022.5, and a high-efficiency dual-cart automated sorting device disclosed in Chinese utility model patent application number 202320994516.7. Based on this existing terminal feeding structure, after the sorting cart transfers the parcel to the slot, the moving frame needs to move the sorting cart along the length of the fixed frame to the end of the fixed frame. This results in a relatively long movement distance for both the moving frame and the sorting cart along the fixed frame's length, hindering further improvements in sorting efficiency. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a centrally located package sorting system with higher sorting efficiency.

[0006] To achieve the above objectives, this utility model provides a centrally located package sorting system, comprising a fixed frame and a package feeding mechanism, at least one sorting trolley movably mounted on the fixed frame, multiple material discharge chutes mounted on the fixed frame, and a receiving mechanism arranged on the outer side of the fixed frame. The sorting trolley can reciprocate between the package feeding mechanism and the material discharge chutes. The receiving mechanism has multiple receiving frames corresponding one-to-one with the material discharge chutes. The fixed frame has a package feeding station, and the package feeding mechanism is located at the package feeding station of the fixed frame. The fixed frame has the material discharge chutes and the receiving mechanism on different sides of the package feeding mechanism.

[0007] Furthermore, the fixed frame is in the shape of a straight line, and the feeding direction of the feeding and packaging mechanism is perpendicular to the extension direction of the fixed frame; along the extension direction of the fixed frame, the feeding and packaging station and the feeding and packaging mechanism are both located in the middle position of the fixed frame.

[0008] The centrally located package feeding and sorting system has sorting subsystems on both sides of the package feeding station and the package feeding mechanism along a direction perpendicular to the feeding direction of the package feeding mechanism. Each sorting subsystem includes a fixed frame, a material discharge chute, and a material receiving mechanism.

[0009] Furthermore, the centrally located package sorting system is a single-vehicle structure, and the sorting trolley is configured with one unit. The sorting trolley can move along the extension direction of the fixed frame in the areas on both sides of the loading and packaging station.

[0010] Furthermore, the centrally located package feeding and sorting system is a dual-car structure, with two sorting carts configured. Both sorting carts can move along the extension direction of the fixed frame in the areas on both sides of the loading and packaging station.

[0011] Furthermore, the centrally located package feeding and sorting system is a four-cart structure, with four sorting carts configured. Two of the sorting carts are located in the area on one side of the loading and packaging station along the extension direction of the fixed frame and can move within this area. The other two sorting carts are located in the area on the other side of the loading and packaging station along the extension direction of the fixed frame and can move within this area.

[0012] Furthermore, each of the sorting carts is movably mounted on a fixed frame via a sorting transmission mechanism;

[0013] Each sorting transmission mechanism includes an X-axis guide rail fixed to a fixed frame, an X-axis movement drive source, an X-axis moving frame slidably engaged with the X-axis guide rail, a Y-axis movement drive source, and a Y-axis guide rail fixed to the X-axis moving frame. The X-axis guide rail extends straight along the extension direction of the fixed frame, with both ends extending to the two ends of the fixed frame. The Y-axis guide rail extends straight up and down along the height direction of the fixed frame. The X-axis movement drive source is drivenly connected to the X-axis moving frame. The sorting trolley is slidably engaged with the Y-axis guide rail, and the Y-axis movement drive source is drivenly connected to the sorting trolley.

[0014] The material feeding and packaging stations are located on the moving path of the X-axis moving frame, which slides along the X-axis guide rail.

[0015] Furthermore, the X-axis movement drive source is an X-axis drive motor fixed to the fixed frame, and the Y-axis movement drive source is a Y-axis drive motor fixed to the X-axis moving frame.

[0016] The X-axis drive motor is connected to the X-axis moving frame via a first synchronous belt drive assembly. The first synchronous belt drive assembly includes a first driving pulley and a first driven pulley, both rotatably supported in a fixed frame, and a first synchronous belt connected to the outer periphery of the first driving pulley and the first driven pulley. The X-axis drive motor is connected to the first driving pulley, and the first synchronous belt is fixedly connected to the X-axis moving frame.

[0017] The Y-axis drive motor is connected to the sorting cart via a second synchronous belt drive assembly. The second synchronous belt drive assembly includes a second driving pulley and a second driven pulley, both rotatably supported in an X-axis moving frame, and a second synchronous belt connected to the outer periphery of the second driving pulley and the second driven pulley. The Y-axis drive motor is connected to the second driving pulley, and the second synchronous belt is fixedly connected to the sorting cart.

[0018] The extension paths of the first and second synchronous belts both cover the material feeding and packaging station.

[0019] Furthermore, when the centrally located package sorting system is a four-car structure, two X-axis moving frames are distributed along the extension direction of the fixed frame on both sides of the loading and packaging station and along the width direction of the fixed frame on one side of the fixed frame, sharing the same X-axis guide rail. The other two X-axis moving frames are distributed along the extension direction of the fixed frame on both sides of the loading and packaging station and along the width direction of the fixed frame on the other side of the fixed frame, sharing the same X-axis guide rail. The two sets of first synchronous belt drive assemblies connected to the two X-axis moving frames sharing the same X-axis guide rail are staggered in the width direction of the fixed frame.

[0020] Furthermore, the fixed frame has a corner on its extension path, and the feeding and packaging station and the feeding and packaging mechanism are both located at the corner of the fixed frame along the extension direction of the fixed frame.

[0021] Furthermore, the fixed frame is L-shaped; along the feeding direction of the feeding and packaging mechanism, the fixed frame has a sorting subsystem on the opposite side of the feeding and packaging mechanism; along the direction perpendicular to the feeding direction of the feeding and packaging mechanism, the fixed frame has a sorting subsystem on one side of the feeding and packaging mechanism; each sorting subsystem includes a portion of the fixed frame, a material discharge chute, and a material receiving mechanism.

[0022] Furthermore, the fixed frame is T-shaped; along the feeding direction of the feeding and packaging mechanism, the fixed frame has a sorting subsystem on the opposite side of the feeding and packaging mechanism; along the direction perpendicular to the feeding direction of the feeding and packaging mechanism, the fixed frame has a sorting subsystem on both sides of the feeding and packaging mechanism; each sorting subsystem includes a portion of the fixed frame, a material discharge chute, and a material receiving mechanism.

[0023] Furthermore, in each of the sorting subsystems, the fixed frame is provided with a material dropping mechanism on both sides perpendicular to its extension direction, and a trolley movement empty area is formed between the two sets of material dropping mechanisms to allow the sorting trolley to move.

[0024] Each set of unloading mechanisms includes multiple chute bottom plates arranged side by side and fixed to a fixed frame. Each chute bottom plate is fixed with multiple chute baffles arranged side by side along the extension direction of the fixed frame. The unloading chute is formed between two adjacent chute baffles and chute bottom plates.

[0025] Each chute base plate has a soft pad fixed at the inner edge near the trolley's movement area, extending towards the trolley's movement area.

[0026] Furthermore, the cushion includes multiple silicone strips arranged side by side along the direction of the fixed frame.

[0027] Furthermore, the feeding and packaging mechanism includes a fixed feeding and packaging frame and multiple feeding belt conveyor mechanisms installed on the feeding and packaging frame. The multiple feeding belt conveyor mechanisms are connected sequentially along their conveying direction, and the drive sources of the multiple feeding belt conveyor mechanisms are independent of each other.

[0028] Furthermore, along the conveying direction of the feeding belt conveyor mechanism, multiple sets of feeding belt conveyors are distributed in a stepped manner from high to low.

[0029] Furthermore, the feeding and packaging mechanism also includes an optical grating sensor located on the outer side of each feeding belt conveyor mechanism and fixed to the feeding and packaging frame, wherein the feeding and packaging frame has a detection opening that allows the optical grating sensor to be exposed.

[0030] Furthermore, the sorting trolley includes a trolley frame movably mounted on a fixed frame, and a material transfer belt conveyor mechanism mounted on the trolley frame;

[0031] The material transfer belt conveyor mechanism has a material transfer conveyor belt, and several baffles are fixed on the outer surface of the material transfer conveyor belt, arranged side by side along the length of the material transfer conveyor belt.

[0032] Furthermore, the sorting trolley also includes a metal plate fixed to the side of one of the baffles and a proximity switch fixed to the trolley frame, the proximity switch being able to sense the metal plate.

[0033] Furthermore, the sorting trolley also includes photoelectric sensors and reflectors fixed to the trolley frame. The photoelectric sensors and reflectors are distributed facing each other in the vertical direction. The material transfer conveyor belt passes between the photoelectric sensors and reflectors and has light-transmitting holes. The light-transmitting holes can be moved to a position facing the reflectors.

[0034] As described above, the centrally located package sorting system of this utility model has the following beneficial effects:

[0035] This application places the feeding and packaging station and the feeding and packaging mechanism at a non-terminal position in the extension direction of the fixed frame, so that the fixed frame is provided with a discharge chute and a receiving mechanism on different sides of the feeding and packaging station and the feeding and packaging mechanism. It is a centrally located feeding structure, or a non-terminal feeding structure. Compared with the terminal feeding structure in the prior art that places the feeding and packaging station and the feeding and packaging mechanism at one end of the extension direction of the fixed frame, this application can shorten the movement distance of the sorting trolley in the extension direction of the fixed frame during a single sorting, thereby shortening the time required for a single sorting, and can relatively increase the number of discharge chute and receiving mechanism, thereby improving sorting efficiency. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the package sorting system in this application.

[0037] Figure 2 for Figure 1 Top view.

[0038] Figure 3 for Figure 1 A schematic diagram of the sorting cart assembly within a fixed frame when using a single-car structure.

[0039] Figure 4 for Figure 3 A diagram from another perspective.

[0040] Figure 5 for Figure 1A schematic diagram of the sorting cart assembly in a fixed frame when using a dual-cart structure.

[0041] Figure 6 for Figure 5 Enlarged view of circle A.

[0042] Figure 7 for Figure 5 A schematic diagram showing the connection between the sorting trolley and the X-axis moving frame.

[0043] Figure 8 for Figure 1 A schematic diagram of the sorting cart assembly in a fixed frame when using a four-cart structure.

[0044] Figure 9 for Figure 8 A schematic diagram of the assembly of four sorting trolleys and four sets of sorting transmission mechanisms.

[0045] Figure 10 for Figure 8 A schematic diagram showing the connection between the sorting trolley and the X-axis moving frame.

[0046] Figure 11 This is a schematic diagram of the sorting cart structure in this application.

[0047] Figure 12 This is a schematic diagram of the material feeding and packaging mechanism in this application.

[0048] Figure 13 for Figure 12 A schematic diagram of the coordination of multiple sets of feeding belt conveyor mechanisms. This diagram is a side view.

[0049] Figure 14 and Figure 15 This is a schematic diagram of the material feeding mechanism in this application from different perspectives.

[0050] Figure 16 for Figure 15 Enlarged view of circle B.

[0051] Figure 17 This is a schematic diagram of the structure of Embodiment 2 of the package sorting system in this application. The receiving mechanism is omitted in this diagram.

[0052] Figure 18 This is a schematic diagram of the structure of Embodiment 3 of the package sorting system in this application. The receiving mechanism is omitted in this diagram.

[0053] Figure 19 for Figure 18 Top view.

[0054] Component designation explanation

[0055] 10 Fixed Frame

[0056] 101 Material feeding and packaging station

[0057] 102 Car movement empty area

[0058] 103 Gantry Frame

[0059] 104 Fixed Link

[0060] 20 Material feeding and packaging organizations

[0061] 21. Material feeding and packaging machine frame

[0062] 22. Feeding belt conveyor mechanism

[0063] 23. Grating Sensor

[0064] 24. Inspect the opening.

[0065] 30 sorting carts

[0066] 31 Car frame

[0067] 32 Material transfer belt conveyor mechanism

[0068] 321 Material Transfer Conveyor Belt

[0069] 322 gear strip

[0070] 331 First sorting cart

[0071] 332 Second sorting cart

[0072] 333 Third sorting cart

[0073] 334 Fourth sorting cart

[0074] 40 Blanking Mechanism

[0075] 41. Material discharge chute

[0076] 42 Slide base plate

[0077] 421 Bending and fixing part

[0078] 422 perforation

[0079] 423 Locking elongated hole

[0080] 43 Slide rail baffle

[0081] 44. Soft padding

[0082] 441 Silicone Strip

[0083] 45 Fixed pressure plate

[0084] 451 Horizontal section of pressure plate

[0085] 452 Vertical part of the pressure plate

[0086] 453 External fixing hole

[0087] 454 Inner fixing hole

[0088] 46 Reinforcing Plate

[0089] 50 Receiving Mechanism

[0090] 51 Receiving frame

[0091] 60 Sorting Transmission Mechanism

[0092] 61 X-guide rail

[0093] 62 X-axis motion drive source

[0094] 63 X-axis moving frame

[0095] 64 Y-axis movement drive source

[0096] 65 Y-guide rail

[0097] 66 First synchronous belt drive assembly

[0098] 661 First driving pulley

[0099] 662 First driven pulley

[0100] 663 First Synchronous Belt

[0101] 67 Second synchronous belt drive assembly

[0102] 671 Second drive pulley

[0103] 672 Second driven pulley

[0104] 673 Second Synchronous Belt

[0105] 68 First driving shaft

[0106] 69 Second Active Shaft

[0107] 610 Walking Wheels

[0108] 611 Guide Wheel Detailed Implementation

[0109] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0110] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0111] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0112] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0113] This application provides a centrally located parcel feeder sorting system and a centrally located parcel feeder sorting method using the same system, for automatically sorting multiple express parcels. Figure 1 and Figure 2 As shown, or Figure 17 and Figure 18 As shown, or Figure 19 As shown, the centrally located package sorting system involved in this application includes a fixed frame 10 and a feeding and packaging mechanism 20, at least one sorting trolley 30 movably mounted on the fixed frame 10, multiple unloading chutes 41 mounted on the fixed frame 10, and a receiving mechanism 50 arranged on the outer side of the fixed frame 10. The sorting trolley 30 can reciprocate between the feeding and packaging mechanism 20 and the unloading chutes 41. The receiving mechanism 50 has multiple receiving frames 51 that correspond one-to-one with the unloading chutes 41. The frame of the receiving mechanism 50 is a movable structure.

[0114] The centrally located package sorting system involved in this application is a non-terminal package supply structure. Specifically, such as... Figure 1 and Figure 2 As shown, the fixed frame 10 is provided with a feeding and packaging station 101, and the feeding and packaging mechanism 20 is set at the feeding and packaging station 101 of the fixed frame 10. Furthermore, the fixed frame 10 is provided with a material discharge chute 41 and a material receiving mechanism 50 on different sides of the feeding and packaging mechanism 20, thereby enabling the sorting trolley 30 to receive the sorted items (such as express packages) at the feeding and packaging station 101, and then the sorting trolley 30 moves to different sides of the feeding and packaging station 101 to transfer materials.

[0115] Furthermore, this application also provides a method for sorting centrally fed packages using the above-described centrally fed package sorting system, the method comprising the following steps:

[0116] Step S1: Place multiple sorted items in an orderly manner on the feeding and packaging mechanism 20. The feeding and packaging mechanism 20 conveys the sorted items toward the fixed frame 10. In this embodiment, the feeding and packaging mechanism 20 conveys the sorted items forward, so the feeding direction of the feeding and packaging mechanism 20 is the forward direction.

[0117] Step S2: The sorting trolley 30 moves to the feeding and packaging mechanism 20;

[0118] Step S3: The sorting trolley 30 receives the sorted items output by the feeding and packaging mechanism 20;

[0119] Step S4: The sorting trolley 30 moves to the material discharge chute 41 corresponding to the sorted item on the sorting trolley 30;

[0120] Step S5: The sorting trolley 30 unloads the sorted items from its trolley, and the sorted items fall into the receiving frame 51 corresponding to the discharge chute 41 via the discharge chute 41; thus, the automatic sorting of one sorted item is completed.

[0121] Step S6: The sorting trolley 30 returns to the feeding and packaging mechanism 20;

[0122] Step S7: Repeat steps S3 to S6 to complete the automatic sorting of multiple items in sequence. During the process of repeatedly sorting multiple items using steps S3 to S6, step S4 will be executed multiple times. In the multiple executions of step S4, based on the structure of the fixed frame 10 with material dropping chutes 41 and receiving mechanisms 50 on different sides of the feeding and packaging mechanism 20, the sorting trolley 30 can move and feed materials to the material dropping chutes 41 distributed on different sides of the feeding and packaging mechanism 20, instead of being limited to feeding materials to the same side of the feeding and packaging mechanism 20 as in the prior art.

[0123] Therefore, this application positions the feeding station 101 and the feeding mechanism 20 at a non-terminal location in the extension direction of the fixed frame 10, so that the fixed frame 10 is provided with a discharge chute 41 and a receiving mechanism 50 on different sides of the feeding station 101 and the feeding mechanism 20, which is a central feeding structure, or a non-terminal feeding structure. Compared with the prior art terminal feeding structure in which the feeding station 101 and the feeding mechanism 20 are located at one end of the extension direction of the fixed frame 10, this application can shorten the moving distance of the sorting trolley 30 in the extension direction of the fixed frame 10 during a single sorting, thereby shortening the time required for a single sorting; under the premise that the moving distance of the sorting trolley 30 is the same, this application can configure a larger number of discharge chute 41; ultimately, this application effectively improves sorting efficiency.

[0124] In the centrally located package sorting system involved in this application, the fixed frame 10 has various forms. The fixed frame 10 can be a straight frame extending in one direction, or an L-shaped frame or a T-shaped frame extending in multiple directions. Based on the different forms of the fixed frame 10 and the moving drive structure of the sorting trolley 30 within the fixed frame 10, the centrally located package sorting system has multiple embodiments. Several preferred embodiments of the centrally located package sorting system are provided below.

[0125] Example 1 of a centrally located package sorting system

[0126] like Figure 1 and Figure 2 As shown, the fixed frame 10 is in a straight line shape and extends horizontally along a direction perpendicular to the feeding direction of the feeding mechanism 20, that is, the fixed frame 10 extends in the left-right direction, and the extension direction of the fixed frame 10 is its length direction. Therefore, in the first embodiment of the centrally located feeding and sorting system, the length direction of the fixed frame 10 is the left-right direction, that is... Figure 2 The left-right direction of the paper in the view; the width direction of the fixed frame 10 is the front-back direction, that is... Figure 2 The vertical direction of the paper in the view; the height direction of the fixed frame 10 is the vertical direction, that is... Figure 2 The orientation of the front and back sides of the paper in the view.

[0127] like Figure 1 and Figure 2As shown, based on the fixed frame 10 with a straight structure, the feeding station 101 is located at a non-end position along the length of the fixed frame 10. That is, the feeding station 101 and the feeding mechanism 20 are not located at the left or right end of the fixed frame 10, but at a position between the left and right ends of the fixed frame 10. Along the direction perpendicular to the feeding direction of the feeding mechanism 20, the first embodiment of the central feeding and sorting system has sorting subsystems on both the left and right sides of the feeding station 101 and the feeding mechanism 20. Each sorting subsystem includes a portion of the fixed frame 10, a material discharge chute 41, and a receiving mechanism 50.

[0128] Furthermore, in Embodiment 1 of the centrally located package sorting system, the loading and packaging station 101 and the loading and packaging mechanism 20 can be positioned in various ways along the length of the fixed frame 10. For example, they can be positioned slightly to the right of the center of the fixed frame 10, slightly to the left of the center of the fixed frame 10, or in the center of the fixed frame 10. The specific positioning can be determined according to actual needs. In this embodiment, as shown... Figure 1 and Figure 2 As shown, along the length of the fixed frame 10, the feeding station 101 and the feeding mechanism 20 are both located at the middle position of the fixed frame 10. Furthermore, along the width of the fixed frame 10, the feeding mechanism 20 is located on the rear side of the fixed frame 10, and the feeding mechanism 20 conveys the sorted items forward.

[0129] Furthermore, such as Figure 1 and Figure 2As shown, in each sorting subsystem, the fixed frame 10 is equipped with a material dropping mechanism 40 on both its front and rear sides perpendicular to its extension direction. Specifically, the front side of the fixed frame 10 has two sets of material dropping mechanisms 40 distributed on the left and right sides of the feeding station 101 and the feeding mechanism 20, respectively; the rear side of the fixed frame 10 also has two sets of material dropping mechanisms 40 distributed on the left and right sides of the feeding station 101 and the feeding mechanism 20, respectively. Each set of material dropping mechanisms 40 has multiple material dropping chutes 41, and each set of material dropping mechanisms 40 has a receiving mechanism 50 configured on its outer side in the front and rear directions. Therefore, the first embodiment of the centrally located feeding sorting system has four sets of cooperating material dropping mechanisms 40 and material dropping chutes 41, thereby improving sorting efficiency. Based on this structure, the fixed frame 10 includes two gantry frames 103, one at the front and one at the back, and several fixed connecting rods 104 fixedly connected between the two gantry frames 103. A trolley movement space 102 is formed between the two gantry frames 103, allowing the sorting trolley 30 to move. The left and right sets of unloading mechanisms 40 on the front side are fixed to the front gantry frame 103, and the left and right sets of unloading mechanisms 40 on the rear side are fixed to the rear gantry frame 103. Thus, the trolley movement space 102 is also formed between the two sets of unloading mechanisms 40 in each sorting subsystem. The gantry frame 103 has a space at least in its middle position that constitutes the feeding and packaging station 101.

[0130] Furthermore, in Embodiment 1 of the centrally located package feeding and sorting system, the number of sorting trolleys 30 movably installed between the front and rear gantry frames 103 in the fixed frame 10 is at least one. Therefore, the number of sorting trolleys 30 can be one, two, four, or more, determined according to actual needs. A larger configuration of sorting trolleys 30 is beneficial for improving sorting efficiency. Based on different numbers of sorting trolleys 30, Embodiment 1 of the centrally located package feeding and sorting system has multiple structures. Moreover, in Embodiment 1 of the centrally located package feeding and sorting system, the reciprocating motion of the sorting trolley 30 between the feeding mechanism 20 and the unloading chute 41 is a left-right translation and a up-down translation. The following provides three preferred structures for Embodiment 1 of the centrally located package feeding and sorting system.

[0131] Example 1 of a single-vehicle structure centrally located package feeding and sorting system

[0132] like Figure 3 As shown, the first embodiment of the centrally located package sorting system is a single-vehicle structure, that is: there is one sorting trolley 30, and the sorting trolley 30 can move along the length of the fixed frame 10 in the left and right areas of the feeding and packaging station 101. That is, after the sorting trolley 30 takes the package from the feeding and packaging station, it can move to the left or to the right.

[0133] Furthermore, the movement of a single sorting cart 30 within the fixed frame 10 is as follows: it moves left and right along the length of the fixed frame 10, and it moves up and down along the height of the fixed frame 10. Based on this, the single sorting cart 30 is mounted on the fixed frame 10, capable of both left-right translation and up-down movement, via a sorting transmission mechanism 60. The preferred structure of the sorting transmission mechanism 60 is as follows: Figure 3 and Figure 4 As shown, the sorting transmission mechanism 60 includes an X-axis guide rail 61 fixed to the fixed frame 10, an X-axis movement drive source 62, an X-axis moving frame 63 slidably engaged with the X-axis guide rail 61, a Y-axis movement drive source 64, and a Y-axis guide rail 65 fixed to the X-axis moving frame 63. The X-axis guide rail 61 extends horizontally along the length direction of the fixed frame 10, with its left and right ends extending to the left and right ends of the fixed frame 10, respectively, so that the X-axis guide rail 61 spans the left and right sets of unloading mechanisms 40 and the feeding and packaging station 101 in its length direction. The Y-axis guide rail 65 extends vertically along the height direction of the fixed frame 10. The X-axis movement drive source 62 is drivenly connected to the X-axis moving frame 63, driving the X-axis moving frame 63 to move horizontally along the X-axis guide rail 61. The sorting trolley 30 is slidably engaged with the Y-axis guide rail 65, and the Y-axis movement drive source 64 is drivenly connected to the sorting trolley 30, driving the sorting trolley 30 to move vertically along the Y-axis guide rail 65. In addition, in the single-vehicle structure of the centrally located package sorting system, the X-axis guide rail 61 is positioned in the middle between the front and rear gantry frames 103 in the front-rear direction, and the X-axis moving frame 63 is a square column structure.

[0134] Furthermore, such as Figure 3 and Figure 4As shown, the X-axis movement drive source 62 is an X-axis drive motor fixed to the top of the fixed frame 10, and the Y-axis movement drive source 64 is a Y-axis drive motor fixed to the top of the X-axis moving frame 63. The X-axis drive motor is connected to the X-axis moving frame 63 through a first synchronous belt drive assembly 66. The first synchronous belt drive assembly 66 includes a first driving pulley 661 and a first driven pulley 662, both rotatably supported in the fixed frame 10, and a first synchronous belt 663 connected to the outer periphery of the first driving pulley 661 and the first driven pulley 662. The X-axis drive motor is connected to the first driving pulley 661, and the first synchronous belt 663 is fixedly connected to the X-axis moving frame 63. The Y-axis drive motor is connected to the sorting cart 30 via a second synchronous belt drive assembly 67. The second synchronous belt drive assembly 67 includes a second driving pulley 671 and a second driven pulley 672, both rotatably supported in the X-axis 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 Y-axis drive motor is connected to the second driving pulley 671, and the second synchronous belt 673 is fixedly connected to the sorting cart 30. The first driving pulley 661 and the first driven pulley 662 are respectively mounted at the left and right ends of the fixed frame 10, so that the extension path of the first synchronous belt 663 covers the feeding and packaging station 101. The second driving pulley 671 and the second driven pulley 672 are respectively mounted at the upper and lower ends of the X-axis moving frame 63, so that the extension path of the second synchronous belt 673 covers the feeding and packaging station 101. Thus, by the first synchronous belt 663 pulling the X-direction moving frame 63 and the sorting trolley 30 to move left and right, and by the second synchronous belt 673 pulling the sorting trolley 30 to move up and down, the sorting trolley 30 can be moved to the feeding and packaging station 101. In this embodiment, the sorting trolley 30 can be moved to the lower rear end of the feeding and packaging mechanism 20 to pick up the sorted items output forward by the feeding and packaging mechanism 20.

[0135] Preferably, such as Figure 3 As shown, there are two X-axis guide rails 61, one upper and one lower. The top of the X-axis moving frame 63 slides with the upper X-axis guide rail 61, and the bottom of the X-axis moving frame 63 slides with the lower X-axis guide rail 61. Furthermore, the X-axis drive motor is connected to the X-axis moving frame 63 through two sets of first synchronous belt transmission assemblies 66, thereby improving the stability of the left and right translation of the X-axis moving frame 63. The sorting transmission mechanism 60 also includes a first drive shaft 68 that extends vertically and is rotatably mounted on the left side of the fixed frame 10 through a bearing seat. The upper end of the first drive shaft 68 is fixedly connected to the motor shaft of the X-axis drive motor through a coupling. The first drive pulley 661 in the two sets of first synchronous belt transmission assemblies 66 is fixedly locked onto the first drive shaft 68 with screws.

[0136] Preferably, such as Figure 3 and Figure 4As shown, the top and bottom of the X-axis moving frame 63 are equipped with several rotatable traveling wheels 610 and several rotatable guide wheels 611; the axis of the traveling wheels 610 extends straight back and forth, and the traveling wheels 610 are fitted into the guide groove of the X-axis guide rail 61; the axis of the guide wheels 611 extends straight up and down, and the guide wheels 611 abut against the front and rear sides of the X-axis guide rail 61.

[0137] Example 1 of a dual-vehicle structure center-mounted package feeding and sorting system

[0138] like Figure 5 As shown, the first embodiment of the centrally located package feeding and sorting system is a dual-car structure, that is, there are two sorting carts 30. Both sorting carts 30 can move along the length of the fixed frame 10 in the left and right areas of the feeding and sorting station 101. That is, after the two sorting carts 30 take materials from the feeding and sorting station, each sorting cart 30 can move to the left or to the right.

[0139] Furthermore, the two sorting carts 30 move within the fixed frame 10 by moving left and right along the length of the fixed frame 10 and moving up and down along the height of the fixed frame 10. Based on this, each sorting cart 30 is mounted on the fixed frame 10 via a sorting transmission mechanism 60, allowing it to move left and right and move up and down. For example... Figure 5 As shown, the structure of each sorting transmission mechanism 60 is the same as that of the sorting transmission mechanism 60 in the first embodiment of the single-vehicle structure centrally located package sorting system. It also has a fixed X-axis guide rail 61, an X-axis moving frame 63 that slides with the X-axis guide rail 61, an X-axis moving drive source 62 that drives the X-axis moving frame 63 to move left and right along the X-axis guide rail 61 through two sets of first synchronous belt transmission components 66, a Y-axis guide rail 65 fixed to the X-axis moving frame 63, and a Y-axis moving drive source 64 that drives the sorting trolley 30 to move up and down along the Y-axis guide rail 65 through a second synchronous belt transmission component 67. The first driving pulley 661 and the first driven pulley 662 are respectively mounted at the left and right ends of the fixed frame 10, so that the extension path of the first synchronous belt 663 covers the material feeding and packaging station 101; the second driving pulley 671 and the second driven pulley 672 are respectively mounted at the upper and lower ends of the X-direction moving frame 63, so that the extension path of the second synchronous belt 673 covers the material feeding and packaging station 101.

[0140] However, the difference lies in the following: In the first embodiment of the dual-vehicle structure centrally located package sorting system, such as... Figure 5As shown, in the sorting drive mechanism 60 connected to one of the sorting carts 30, a pair of X-axis guide rails 61 are arranged in the front of the rear gantry 103 in the front-rear direction. The X-axis moving frame 63 in this group moves laterally adjacent to the front of the rear gantry 103. In the sorting drive mechanism 60 connected to the other sorting cart 30, a pair of X-axis guide rails 61 are arranged in the rear of the front gantry 103 in the front-rear direction. The X-axis moving frame 63 in this group moves laterally adjacent to the rear of the front gantry 103. Furthermore, as... Figure 7 As shown, the X-axis moving frame 63 is a flat frame that is very narrow in the front-to-back direction. The sorting cart 30 is mounted on the X-axis moving frame 63 at its front-to-back end, forming a cantilevered installation structure. In the front-to-back direction, the gap between the end of the sorting cart 30 extending from the X-axis moving frame 63 and the gantry 103 on the opposite side of the X-axis moving frame 63 allows the X-axis moving frames 63 in another sorting drive mechanism 60 to pass through. In this way, when the two sorting drive mechanisms 60 independently drive the two sorting carts 30 to move left and right and up and down, it is ensured that the X-axis moving frames 63 in the two sorting drive mechanisms 60 do not interfere with each other.

[0141] Preferably, such as Figure 7 As shown, the Y-axis moving motor drives the sorting trolley 30 to move up and down along the Y-axis guide rail 65 via two sets of second synchronous belt drive assemblies 67 on the left and right sides, respectively. The two sets of second synchronous belt drive assemblies 67 are installed on the left and right edges of the X-axis moving frame 63 to improve the stability of the sorting trolley 30 with the cantilevered structure moving up and down. Based on this, each sorting transmission mechanism 60 also includes a second drive shaft 69 that extends to the left and right and is rotatably mounted on the top of the X-axis moving frame 63 via bearing seats. The right end of the second drive shaft 69 is fixedly connected to the motor shaft of the Y-axis driving motor via a coupling. The second drive pulleys 671 in the two sets of second synchronous belt drive assemblies 67 are fixedly locked onto the second drive shaft 69 with screws.

[0142] Preferably, such as Figure 6 and Figure 7 As shown, each X-axis movable frame 63 is equipped with several rotatable traveling wheels 610 and several rotatable guide wheels 611 at its top and bottom. The axis of the traveling wheels 610 extends straight back and forth. Every two traveling wheels 610 form a group and are installed on the same axle. The two traveling wheels 610 in each group abut against the front and rear sides of the X-axis guide rail 61. The axis of the guide wheels 611 extends straight up and down and abuts against the front and rear sides of the X-axis guide rail 61.

[0143] Example 1 of a four-car centrally located package feeding and sorting system

[0144] like Figure 8 and Figure 9As shown, the first embodiment of the centrally located package sorting system has a four-car structure, that is, four sorting carts 30 are configured. For ease of description, the four sorting carts 30 are defined as the first sorting cart 331, the second sorting cart 332, the third sorting cart 333, and the fourth sorting cart 334, respectively. In this configuration, along the length of the fixed frame 10, the first sorting cart 331 and the second sorting cart 332 are located in the area to the left of the loading and packaging station 101. The first and second sorting carts 331 and 332 are configured to move only within the left side of the loading and packaging station 101 and cannot move into the right side area. Similarly, the third sorting cart 333 and the fourth sorting cart 334 are located in the area to the right of the loading and packaging station 101. The third and fourth sorting carts 333 and 334 are configured to move only within the right side of the loading and packaging station 101 and cannot move into the left side area. This ensures that the four sorting carts 30 do not interfere with each other during the sorting process.

[0145] Furthermore, the four sorting carts 30 move within the fixed frame 10 by moving left and right along the length of the fixed frame 10 and by moving up and down along the height of the fixed frame 10. Based on this, each sorting cart 30 is mounted on the fixed frame 10 via a sorting transmission mechanism 60, allowing it to move left and right and move up and down. For example... Figures 8 to 10 As shown, the structure of each sorting transmission mechanism 60 is the same as that of the sorting transmission mechanism 60 in Embodiment 1 of the dual-cart structure centrally located package sorting system. It also has a fixed X-axis guide rail 61, an X-axis moving frame 63 that slides with the X-axis guide rail 61 and is a flat frame, an X-axis moving drive source 62 that drives the X-axis moving frame 63 to move left and right along the X-axis guide rail 61 through two sets of upper and lower first synchronous belt transmission components 66, a Y-axis guide rail 65 fixed to the X-axis moving frame 63, and a Y-axis moving drive source 64 that drives the sorting cart 30 to move up and down along the Y-axis guide rail 65 through two sets of left and right second synchronous belt transmission components 67.

[0146] However, the difference lies in the following: In the first embodiment of the four-carriage centrally located package sorting system, such as... Figure 8 and Figure 9As shown, the rear end of the first sorting trolley 331 is installed on the left rear X-axis moving frame 63, and the rear end of the third sorting trolley 333 is installed on the right rear X-axis moving frame 63. The left rear X-axis moving frame 63 and the right rear X-axis moving frame 63 are aligned in the width direction of the fixed frame 10 (i.e., they are both distributed on the rear side of the fixed frame 10) and distributed on the left and right sides of the feeding and packaging station 101 in the length direction of the fixed frame 10, so that the upper ends of the left rear X-axis moving frame 63 and the right rear X-axis moving frame 63 share the same rear X-axis guide rail 61, and the lower ends also share the same rear X-axis guide rail 61. Similarly, the front end of the second sorting trolley 332 is installed on the left front X-axis moving frame 63, and the front end of the fourth sorting trolley 334 is installed on the right front X-axis moving frame 63. The left front X-axis moving frame 63 and the right front X-axis moving frame 63 are aligned in the width direction of the fixed frame 10 (i.e., they are both distributed on the front side of the fixed frame 10) and distributed on the left and right sides of the feeding station 101 in the length direction of the fixed frame 10. This makes the upper ends of the left front X-axis moving frame 63 and the lower ends share the same front X-axis guide rail 61, making the overall structure of the central feeding and sorting system compact and reducing costs.

[0147] Furthermore, the two sets of first synchronous belt drive assemblies 66 connected to the two X-axis moving frames 63 sharing the same root X-axis guide rail 61 are staggered in the width direction of the fixed frame 10. Taking the left rear X-axis moving frame 63 and the right rear X-axis moving frame 63 sharing the same root rear X-axis guide rail 61 as examples: Figure 9As shown, in the sorting transmission mechanism 60 where the left rear X-direction 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 feeding and packaging station 101, so that the extension path of the first synchronous belt 663 in the sorting transmission mechanism 60 covers the feeding and packaging station 101; and the first driving pulley 661 and the first driven pulley 662 in the sorting transmission mechanism 60 are both arranged on the rear side of the X-direction guide rail 61 (i.e., the outer side in the width direction), so that the first synchronous belt 663 in this sorting transmission mechanism 60 is distributed on the rear side of the X-direction guide rail 61 (i.e., the outer side in the width direction). In the sorting transmission mechanism 60 where the right rear X-axis 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 feeding and packaging station 101, so that the extension path of the first synchronous belt 663 in the sorting transmission mechanism 60 covers the feeding and packaging station 101; and the first driving pulley 661 and the first driven pulley 662 in the sorting transmission mechanism 60 are both arranged in front of the X-axis guide rail 61 (i.e., on the inner side in the width direction), so that the first synchronous belts 663 in this sorting transmission mechanism 60 are distributed in front of the X-axis guide rail 61 (i.e., on the inner side in the width direction). In this way, the first synchronous belt transmission assemblies 66 of the two X-axis moving frames 63 that drive the left and right translation along the same X-axis guide rail 61 are staggered to avoid mutual interference.

[0148] Preferably, such as Figure 10 As shown, each X-axis movable frame 63 is equipped with several rotatable traveling wheels 610 and several rotatable guide wheels 611 at its top and bottom. The axis of the traveling wheels 610 extends straight back and forth. Every two traveling wheels 610 form a group and are installed on the same axle. The two traveling wheels 610 in each group abut against the front and rear sides of the X-axis guide rail 61. The axis of the guide wheels 611 extends straight up and down and abuts against the front and rear sides of the X-axis guide rail 61.

[0149] Example 2 of a centrally located package sorting system

[0150] like Figure 17 As shown, the fixed frame 10 is L-shaped, thus having corners. Both the feeding station 101 and the feeding mechanism 20 are located at the corners of the fixed frame 10 along its extension direction. Along the feeding direction of the feeding mechanism 20, the fixed frame 10 has a sorting subsystem on the opposite side (i.e., front side) of the feeding mechanism 20; along a direction perpendicular to the feeding direction of the feeding mechanism 20, the fixed frame 10 has a sorting subsystem on the left or right side of the feeding mechanism 20. Therefore, the second embodiment of the centrally located feeding and sorting system has two sorting subsystems, each including a portion of the fixed frame 10, a discharge chute 41, and a receiving mechanism 50. Figure 17 In the second embodiment of the centrally located package feeding and sorting system shown, two sorting subsystems are respectively located on the front and right sides of the loading and packaging station 101 and the loading and packaging mechanism 20.

[0151] Furthermore, such as Figure 17 As shown, in each sorting subsystem, the fixed frame 10 is provided with a material dropping mechanism 40 on both sides perpendicular to its extension direction, and a trolley movement space 102 is formed between the two sets of material dropping mechanisms 40 to allow the sorting trolley 30 to move. Specifically, in the sorting subsystem distributed in front of the feeding and packaging station 101 and the feeding and packaging mechanism 20, this part of the fixed frame 10 extends straight in the front-back direction. On the left and right sides of this part of the fixed frame 10, there is a set of material dropping mechanisms 40 distributed in front of the feeding and packaging station 101 and the feeding and packaging mechanism 20. Each set of material dropping mechanisms 40 is provided with a set of receiving mechanisms 50 on the outer side in the left and right directions. This part of the fixed frame 10 includes two gantry frames 103 on the left and right, and several fixed connecting rods 104 fixedly connected between the two gantry frames 103. The trolley movement space 102 is formed between the two gantry frames 103. In the sorting subsystem distributed to the right of the feeding and packaging station 101 and the feeding and packaging mechanism 20, this fixed frame 10 extends horizontally in the left-right direction. On both the front and rear sides of this fixed frame 10 are a set of unloading mechanisms 40, also distributed to the right of the feeding and packaging station 101 and the feeding and packaging mechanism 20. Each unloading mechanism 40 has a receiving mechanism 50 on its outer side in the front-back direction. This fixed frame 10 includes two gantry frames 103 (front and rear) and several fixed connecting rods 104 fixedly connected between the two gantry frames 103. The trolley movement space 102 is formed between the two gantry frames 103. Therefore, the feeding and packaging station 101 and the feeding and packaging mechanism 20 are formed at the junction of this front-back extending fixed frame 10 and the left-right extending fixed frame 10.

[0152] Of course, in other embodiments, the fixed frame 10 may also be V-shaped, and the feeding and packaging station 101 and the feeding and packaging mechanism 20 are both located at the corner of the fixed frame 10 along the extension direction of the fixed frame 10.

[0153] Example 3 of a centrally located package sorting system

[0154] like Figure 18 and Figure 19As shown, the fixed frame 10 is T-shaped, thus having corners. The feeding station 101 and the feeding mechanism 20 are both located at the corners of the fixed frame 10 along its extension direction. Along the feeding direction of the feeding mechanism 20, the fixed frame 10 has a sorting subsystem on the opposite side (i.e., the front side) of the feeding mechanism 20; along a direction perpendicular to the feeding direction of the feeding mechanism 20, the fixed frame 10 has sorting subsystems on both the left and right sides of the feeding mechanism 20. Therefore, the third embodiment of the centrally located feeding and sorting system has three sorting subsystems, each including a portion of the fixed frame 10, a discharge chute 41, and a receiving mechanism 50.

[0155] Furthermore, such as Figure 18 and Figure 19 As shown, in each sorting subsystem, the fixed frame 10 is provided with a material dropping mechanism 40 on both sides perpendicular to its extension direction, and a trolley movement space 102 is formed between the two sets of material dropping mechanisms 40 to allow the sorting trolley 30 to move. Specifically, in the sorting subsystem distributed in front of the feeding and packaging station 101 and the feeding and packaging mechanism 20, this part of the fixed frame 10 extends straight in the front-back direction. On the left and right sides of this part of the fixed frame 10, there is a set of material dropping mechanisms 40 distributed in front of the feeding and packaging station 101 and the feeding and packaging mechanism 20. Each set of material dropping mechanisms 40 is provided with a set of receiving mechanisms 50 on the outer side in the left and right directions. This part of the fixed frame 10 includes two gantry frames 103 on the left and right, and several fixed connecting rods 104 fixedly connected between the two gantry frames 103. The trolley movement space 102 is formed between the two gantry frames 103. In the sorting subsystems distributed on the left and right sides of the feeding and packaging station 101 and the feeding and packaging mechanism 20, the fixed frames 10 extend straight in the left and right directions. On the front and rear sides of the left fixed frame 10, there is a set of unloading mechanisms 40 distributed on the left side of the feeding and packaging station 101 and the feeding and packaging mechanism 20. On the front and rear sides of the right fixed frame 10, there is a set of unloading mechanisms 40 distributed on the right side of the feeding and packaging station 101 and the feeding and packaging mechanism 20. Each unloading mechanism 40 has a set of receiving mechanisms 50 on its outer side in the front and rear directions. The left and right fixed frames 10 and the right fixed frames 10 both include two gantry frames 103 and several fixed connecting rods 104 fixedly connected between the two gantry frames 103. The trolley movement space 102 is formed between the left and right gantry frames 103. Therefore, the feeding and packaging station 101 and the feeding and packaging mechanism 20 are formed at the junction of the front-to-back extending fixed frame 10 and the left-to-right extending fixed frame 10, and are located in the middle position of the left-to-right extending fixed frame 10.

[0156] Furthermore, in the above-mentioned embodiments two and three of the centrally located package feeding and sorting system, the sorting trolley 30 moves by translating along the extension direction of the fixed frame 10 and translating along the vertical direction. Based on this, the sorting trolley 30 preferably adopts a structure of two trolleys, that is, the sorting trolley 30 includes a lateral trolley that translates along the extension direction of the fixed frame 10 and a lifting trolley that translates along the vertical direction. Each sorting subsystem's fixed frame 10 is equipped with one lifting trolley and several lateral trolleys. The several lateral trolleys are distributed vertically, corresponding to the upper and lower multi-layered material drop chutes 41 in the sorting subsystem. The lifting trolleys are distributed on the outer periphery of the feeding and package feeding mechanism 20. During the sorting operation, the lifting trolley receives the feeding and packaging mechanism 20, which outputs the sorted items to the lifting trolley. The lifting trolley moves up and down to the transverse trolley corresponding to the layer where the target unloading chute 41 is located, and outputs the sorted items to the transverse trolley. The transverse trolley moves to the target unloading chute 41 and unloads the sorted items from it. The sorted items fall through the unloading chute 41 into the receiving frame 51 corresponding to the unloading chute 41.

[0157] Furthermore, in the three embodiments of the above-mentioned centrally located package sorting system, the structure of the sorting trolley 30 is preferably as follows: Figure 11 As shown, the sorting trolley 30 includes a trolley frame 31 and a transfer belt conveyor mechanism 32 mounted on the trolley frame 31. The transfer belt conveyor mechanism 32 conveys materials back and forth, and its conveying direction 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 centrally located package-feeding sorting system with single-cart, double-cart, and four-cart structures, the trolley frame 31 is movably mounted on the X-axis moving frame 63 and fixedly connected to the second synchronous belt 673. In the second and third embodiments of the centrally located package-feeding sorting system, the trolley frame 31 of the transverse trolley is movably mounted on the fixed frame 10, and the trolley frame 31 of the lifting trolley is movably mounted on the fixed frame 10.

[0158] Furthermore, such as Figure 11As shown, the material transfer belt conveyor mechanism 32 includes a material transfer drive motor, a drive roller and a driven roller rotatably mounted on the trolley frame 31, and a material transfer conveyor belt 321 connected to the outer periphery of the drive roller and the driven roller. The material transfer drive motor is connected to the drive roller and drives the drive roller to rotate. By driving the material transfer conveyor belt 321 to rotate, the sorted items on the material transfer conveyor belt 321 can be conveyed forward to the discharge chute 41 on the front side of the fixed frame 10, or the sorted items on the material transfer conveyor belt 321 can be conveyed backward to the discharge chute 41 on the rear side of the fixed frame 10. Preferably, several baffles 322 arranged side by side along the length direction of the material transfer conveyor belt 321 are fixed on the outer surface of the material transfer conveyor belt 321. The baffle 322 serves two purposes: 1. It increases the surface friction of the transfer conveyor belt 321, making it less likely for the sorted items to slip; 2. When the sorted items are irregularly shaped such as spheres or hemispheres, the baffle 322 acts as a stop and limiter, making it less likely for the irregularly shaped items to move randomly on the transfer conveyor belt 321, thus ensuring the accuracy of the transfer.

[0159] Furthermore, the sorting cart 30 also has a detection component for zeroing control of the transfer conveyor belt 321. The detection component has the following two preferred structures.

[0160] 1. The detection component consists of a metal plate and a proximity switch: The metal plate is fixed to the left or right side of one of the multiple stop bars 322. The proximity switch is fixed to the trolley frame 31 and distributed on the same side as the stop bar 322. The proximity switch can sense the metal plate. In the initial state of the sorting trolley 30, the proximity switch can detect the metal plate and is triggered. When the sorting trolley 30 receives the sorted items and moves to the corresponding unloading chute 41, the proximity switch is always triggered. Afterward, the transfer drive motor operates, driving the transfer conveyor belt 321 to unload the sorted items. During this process, the metal plate first moves away from the proximity switch and then gradually moves closer to it. When the state of the proximity switch changes from triggered to not triggered and then back to triggered, it indicates that unloading is complete. Then, the material transfer drive motor reverses, driving the material transfer conveyor belt 321 to rotate in the opposite direction. The metal sheet moves away from the proximity switch again and then gradually moves closer to the proximity switch. The state of the proximity switch changes from being triggered to not being triggered and then back to being triggered. At this time, the material transfer drive motor stops and the material transfer conveyor belt 321 returns to zero.

[0161] II. The detection component consists of a photoelectric sensor and a reflector: both the photoelectric sensor and the reflector are fixed to the trolley frame 31 and are arranged facing each other vertically; one of the photoelectric sensor and the reflector is located between the upper and lower sections of the transfer conveyor belt 321, and the other is located below the transfer conveyor belt 321. The transfer conveyor belt 321 passes between the photoelectric sensor and the reflector, and a light-transmitting hole is provided on the transfer conveyor belt 321; through the rotational movement of the transfer conveyor belt 321, the light-transmitting hole can be moved to a position facing the reflector. In the initial state, the light-transmitting hole of the sorting trolley 30 faces the reflector, the light is not blocked, and the photoelectric sensor is triggered. When the sorting trolley 30 receives the sorted item and moves to the corresponding drop chute 41, the proximity switch is triggered. Afterwards, the transfer drive motor actuates, driving the transfer conveyor belt 321 to unload the sorted items. During this process, the light-transmitting hole moves away from the reflector and then closer to it. When the photoelectric sensor's state switches from triggered to untriggered and then back to triggered, it indicates that unloading is complete. Next, the transfer drive motor reverses, driving the transfer conveyor belt 321 to rotate in the opposite direction. The light-transmitting hole again moves away from the reflector and then closer to it. The photoelectric sensor's state again switches from triggered to untriggered and then back to triggered. At this point, the transfer drive motor stops, and the transfer conveyor belt 321 returns to zero.

[0162] Furthermore, in the three embodiments of the above-mentioned centrally located package sorting system, the preferred structure of the feeding and packaging mechanism 20 is as follows: Figure 12 As shown, the feeding and packaging mechanism 20 includes a fixed feeding and packaging frame 21 and multiple feeding belt conveyor mechanisms 22 mounted on the feeding and packaging frame 21. The number of feeding belt conveyor mechanisms 22 can be two, three, or more, depending on actual needs. The feeding and packaging frame 21 can be fixedly connected to the fixed frame 10 or installed separately using anchor bolts. The conveying direction of the feeding belt conveyor mechanisms 22 is forward. The multiple feeding belt conveyor mechanisms 22 are connected sequentially from back to front along their conveying direction. The drive sources of the multiple feeding belt conveyor mechanisms 22 are independent of each other, that is, each feeding belt conveyor mechanism 22 is driven by an independent motor, so that the conveying speed of each feeding belt conveyor mechanism 22 can be controlled independently. In this way, the buffering of sorted items on the multiple feeding belt conveyor mechanisms 22 can be better controlled, avoiding excessive accumulation of sorted items in front and improving equipment efficiency.

[0163] Preferably, the sorting trolley 30 receives materials from the feeding and packaging mechanism 20 in the following manner: the sorting trolley 30 moves to a position below the front end of the feeding and packaging mechanism 20, and multiple sets of feeding belt conveyor mechanisms 22 convey the sorted items forward. The sorted items fall from the front end of the feeding belt conveyor mechanism 22 and then land on the sorting trolley 30 below, thus completing the material retrieval.

[0164] Furthermore, such as Figure 11 and Figure 12 As shown, the sorted items are conveyed forward along the feeding belt conveyor 22. Multiple feeding belt conveyors 22 are arranged in a stepped manner from high to low. The stepped distribution structure of multiple feeding belt conveyors 22 can reduce the gap between two adjacent feeding belt conveyors 22 and prevent items from falling off.

[0165] Furthermore, such as Figure 11 As shown, the feeding and packaging mechanism 20 also includes an optical grating sensor 23 located on the outer side of each feeding belt conveyor mechanism 22 and fixed to the feeding and packaging frame 21. The feeding and packaging frame 21 has a detection opening 24 that allows the optical grating sensor 23 to be exposed. The optical grating sensor 23 has two functions: 1. It can detect the first sorted item and the last sorted item passing forward on the feeding and packaging mechanism 20, for sorting start control and sorting stop control; 2. It can detect the length of the sorted items conveyed on the feeding and packaging mechanism 20. When the length of the sorted item exceeds the threshold, it is judged as misplacement, and an alarm will be triggered, thereby improving operational safety.

[0166] Furthermore, in the three embodiments of the above-mentioned centrally located package sorting system, the preferred structure of the material feeding mechanism 40 is as follows: Figure 1 and Figure 14 As shown, each set of unloading mechanisms 40 includes multiple chute bottom plates 42 arranged side by side and fixed to the fixed frame 10. Each chute bottom plate 42 is fixed with multiple chute baffles 43 arranged side by side along the extension direction of the fixed frame 10 in the sorting subsystem. An unloading chute 41 is formed between two adjacent chute baffles 43 and chute bottom plates 42. The chute bottom plates 42 are inclined outward and downward, so that the unloading chute 41 is inclined outward and downward.

[0167] Preferably, such as Figure 14 and Figure 15 As shown, each chute bottom plate 42 has a soft pad 44 fixed at its inner edge near the trolley movement empty area 102, extending towards the trolley movement empty area 102. The soft pad 44 can reduce the gap between the cantilever end of the sorting trolley 30 and the inner end of the opposite side discharge chute 41, that is, reduce the gap between the sorting trolley 30 mounted on the rear X-axis moving frame 63 and the front discharge chute 41 of the sorting trolley 30, and reduce the gap between the sorting trolley 30 mounted on the front X-axis moving frame 63 and the rear discharge chute 41 of the sorting trolley 30, thereby preventing parts from falling off. The soft pad 44 can be a single piece of silicone pad or can be composed of multiple silicone strips 441. In this embodiment, as shown... Figure 14 and Figure 15As shown, the soft pad 44 includes multiple silicone strips 441 arranged side by side along the extension direction of the fixed frame 10 in the sorting subsystem. The structure of multiple silicone strips 441 can reduce the resistance encountered by the sorting trolley 30 during movement. Thus, after repeated use, the wear of the silicone strips 441 can also be reduced, making the service life of the silicone strips 441 longer than that of a whole silicone pad.

[0168] Furthermore, the preferred fixing structure of multiple silicone strips 441 at the inner edge of the slide base plate 42 is as follows: Figure 15 and Figure 16 As shown, a fixing plate 45 is fixed to the bottom of the inner edge of the slide base plate 42. The fixing plate 45 is L-shaped and includes a horizontal part 451 and a vertical part 452. The horizontal part 451 has a set of fixing holes corresponding to multiple silicone strips 441. Each set of fixing holes includes an outer fixing hole 453 and an inner fixing hole 454 arranged side by side. The inner edge of the slide base plate 42 is integrally provided with a downwardly bent fixing part 421. The slide base plate 42 has multiple through holes 422 corresponding to multiple silicone strips 441 at the bend between the bent fixing part 421 and the bend. The silicone strip 441 is inserted downwards into the outer fixing hole 453, then upwards through the inner fixing hole 454, and finally extends out through the through hole 422 to the inner edge of the slide base plate 42. Bolts are then used to lock the vertical part 452 of the fixing plate 45 to the bent fixing part 421 of the slide base plate 42, thereby fixing the silicone strip 441 to the inner edge of the slide base plate 42. After the silicone strip 441 is fixed, its installation method of inserting downwards into the outer fixing hole 453 and then upwards through the inner fixing hole 454 creates a U-shaped bend. This structure allows the silicone strip 441 to be more reliably fixed, preventing it from falling off during use.

[0169] Preferably, such as Figure 15 and Figure 16 As shown, the vertical portion 452 of the fixed pressure plate 45 has a locking round hole, and the bent fixing portion 421 of the slide base plate 42 has a vertically extending locking elongated hole 423. Bolts for locking the fixed pressure plate 45 and the slide base plate 42 pass through the locking round hole and the locking elongated hole 423. Based on the setting of the locking elongated hole 423, the height position of the fixed pressure plate 45 relative to the slide base plate 42 can be adjusted, that is, the vertical distance between the horizontal portion 451 of the pressure plate and the slide base plate 42 can be adjusted, so as to be suitable for fixing silicone strips 441 of different diameters and shapes.

[0170] Preferably, such as Figure 15 As shown, several reinforcing plates 46 are also fixed to the bottom of the chute bottom plate 42 to improve the structural strength of the chute bottom plate 42.

[0171] In summary, this application, through its centrally located package feeding structure, shortens the travel distance of the sorting trolley 30 along the length of the fixed frame 10 during a single sorting operation, thereby reducing the time required for a single sorting operation and improving sorting efficiency. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and possesses high industrial applicability.

[0172] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A mid-positioned bag sorting system, comprising a fixed frame (10) and a bag feeding mechanism (20) which are fixedly installed, at least one sorting trolley (30) which is movably installed on the fixed frame (10), a plurality of drop chute (41) which are installed on the fixed frame (10), and a bag receiving mechanism (50) which is arranged outside the fixed frame (10), the sorting trolley (30) can reciprocate between the bag feeding mechanism (20) and the drop chute (41), the bag receiving mechanism (50) has a plurality of bag receiving frames (51) corresponding to the drop chute (41) one by one, characterized in that: The fixed frame (10) is provided with a feeding and bagging station (101), the feeding and bagging mechanism (20) is arranged at the feeding and bagging station (101) of the fixed frame (10), and the fixed frame (10) is provided with the blanking chute (41) and the material receiving mechanism (50) at different sides of the feeding and bagging mechanism (20). ​ 2. The mid-floor parcel sorting system of claim 1, wherein: The fixed frame (10) is in a linear shape, the feeding direction of the feeding and bagging mechanism (20) is perpendicular to the extension direction of the fixed frame (10), and the feeding and bagging station (101) and the feeding and bagging mechanism (20) are arranged at the middle position of the fixed frame (10) along the extension direction of the fixed frame (10). The middle feeding and bagging sorting system is provided with sorting subsystems on both sides of the feeding and bagging station (101) and the feeding and bagging mechanism (20) in a direction perpendicular to the feeding direction of the feeding and bagging mechanism (20), each sorting subsystem comprises part of the fixed frame (10), the blanking chute (41) and the material receiving mechanism (50).

3. The hyposupply sorting system of claim 2, wherein: The middle feeding and bagging sorting system is a single-car structure, and one sorting trolley (30) is arranged.

4. The hyposupply sorting system of claim 2, wherein: The middle feeding and bagging sorting system is a double-car structure, and two sorting trolleys (30) are arranged.

5. The hyposupply sorting system of claim 2, wherein: The middle feeding and bagging sorting system is a four-car structure, two sorting trolleys (30) are arranged in a region on one side of the feeding and bagging station (101) along the extension direction of the fixed frame (10) and can move in the region, and the other two sorting trolleys (30) are arranged in a region on the other side of the feeding and bagging station (101) along the extension direction of the fixed frame (10) and can move in the region.

6. The mid-floor parcel sorting system according to any one of claims 3 to 5, characterized in that: Each sorting trolley (30) is movably installed on the fixed frame (10) through a set of sorting transmission mechanisms (60). Each set of sorting transmission mechanisms (60) comprises an X-direction guide rail (61) fixed to the fixed frame (10), an X-direction movement driving source (62), an X-direction movement frame (63) in sliding cooperation with the X-direction guide rail (61), a Y-direction movement driving source (64), and a Y-direction guide rail (65) fixed to the X-direction movement frame (63), the X-direction guide rail (61) extends straight along the extension direction of the fixed frame (10) and extends to both ends of the fixed frame (10), the Y-direction guide rail (65) extends straight up and down along the height direction of the fixed frame (10), the X-direction movement driving source (62) is in transmission connection with the X-direction movement frame (63), the sorting trolley (30) is in sliding cooperation with the Y-direction guide rail (65), and the Y-direction movement driving source (64) is in transmission connection with the sorting trolley (30). The feeding and bagging stations (101) are distributed on the movement path of the X-direction movement frame (63) sliding along the X-direction guide rail (61).

7. The hyposupply sorting system of claim 6, wherein: The X-direction moving driving source (62) is an X-direction driving motor fixed to the fixed frame (10), and the Y-direction moving driving source (64) is a Y-direction driving motor fixed to the X-direction moving frame (63); The X-direction driving motor is connected with the X-direction moving frame (63) through a first synchronous belt transmission assembly (66), the first synchronous belt transmission assembly (66) comprises a first driving belt wheel (661) and a first driven belt wheel (662) which are rotatably supported in the fixed frame (10), and a first synchronous belt (663) connected to the outer periphery of the first driving belt wheel (661) and the first driven belt wheel (662), the X-direction driving motor is connected with the first driving belt wheel (661), and the first synchronous belt (663) is fixedly connected with the X-direction moving frame (63); The Y-direction driving motor is connected with the sorting trolley (30) through a second synchronous belt transmission assembly (67), the second synchronous belt transmission assembly (67) comprises a second driving belt wheel (671) and a second driven belt wheel (672) which are rotatably supported in the X-direction moving frame (63), and a second synchronous belt (673) connected to the outer periphery of the second driving belt wheel (671) and the second driven belt wheel (672), the Y-direction driving motor is connected with the second driving belt wheel (671), and the second synchronous belt (673) is fixedly connected with the sorting trolley (30); The extension paths of the first synchronous belt (663) and the second synchronous belt (673) both cover the material feeding and bag supplying work station (101).

8. The hyposupply sorting system of claim 7, wherein: When the middle-positioned bag supplying and sorting system is a four-trolley structure, two X-direction moving frames (63) are distributed on both sides of the material feeding and bag supplying work station (101) along the extension direction of the fixed frame (10) and on one side of the fixed frame (10) along the width direction of the fixed frame (10) and share the same X-direction guide rail (61), and the other two X-direction moving frames (63) are distributed on both sides of the material feeding and bag supplying work station (101) along the extension direction of the fixed frame (10) and on the other side of the fixed frame (10) along the width direction of the fixed frame (10) and share the same X-direction guide rail (61), and the two sets of first synchronous belt transmission assemblies (66) connected with the two X-direction moving frames (63) sharing the same X-direction guide rail (61) are staggered in the width direction of the fixed frame (10).

9. The hyposupply sorting system of claim 1, wherein: The fixed frame (10) is provided with a corner in its extension path, and the material feeding and bag supplying work station (101) and the material feeding and bag supplying mechanism (20) are both arranged at the corner of the fixed frame (10) along the extension direction of the fixed frame (10).

10. The hyposupply sorting system of claim 9, wherein: The fixed frame (10) is L-shaped; along the material feeding direction of the material feeding and bag supplying mechanism (20), the fixed frame (10) is provided with a sorting sub-system on the opposite side of the material feeding and bag supplying mechanism (20); along the direction perpendicular to the material feeding direction of the material feeding and bag supplying mechanism (20), the fixed frame (10) is provided with a sorting sub-system on one side of the material feeding and bag supplying mechanism (20); each sorting sub-system comprises part of the fixed frame (10), a material dropping chute (41) and a material receiving mechanism (50).

11. The hyposupply sorting system of claim 9, wherein: The fixed frame (10) is T-shaped; along the feeding direction of the feeding and bagging mechanism (20), the fixed frame (10) is provided with a sorting subsystem on the opposite side of the feeding and bagging mechanism (20); along the direction perpendicular to the feeding direction of the feeding and bagging mechanism (20), the fixed frame (10) is provided with a sorting subsystem on both sides of the feeding and bagging mechanism (20); each sorting subsystem comprises part of the fixed frame (10), a falling chute (41) and a receiving mechanism (50).

12. The mid-floor parcel sorting system of any one of claims 2 or 10-11, wherein: In each sorting subsystem, the fixed frame (10) is provided with a falling mechanism (40) on both sides perpendicular to the extension direction of the fixed frame (10), and a trolley movement space (102) allowing the movement of a sorting trolley (30) is formed between the two sets of falling mechanisms (40); Each set of falling mechanisms (40) comprises a plurality of chute bottom plates (42) arranged in parallel and fixed to the fixed frame (10), each chute bottom plate (42) is fixed with a plurality of chute baffle plates (43) arranged in parallel along the extension direction of the fixed frame (10), and the falling chute (41) is formed between adjacent two chute baffle plates (43) and the chute bottom plate (42); Each chute bottom plate (42) is fixed with a soft pad (44) extending towards the trolley movement space (102) at the inner edge close to the trolley movement space (102).

13. The hyposupply sorting system of claim 12, wherein: The soft pad (44) comprises a plurality of silica gel strips (441) arranged in parallel along the extension direction of the fixed frame (10).

14. The hyposupply sorting system of claim 1, wherein: The feeding and bagging mechanism (20) comprises a fixed feeding and bagging rack (21), and a plurality of sets of feeding belt conveying mechanisms (22) mounted on the feeding and bagging rack (21), the plurality of sets of feeding belt conveying mechanisms (22) are sequentially connected along the conveying direction, and the driving sources of the plurality of sets of feeding belt conveying mechanisms (22) are independent of each other.

15. The hyposupply sorting system of claim 14, wherein: Along the conveying direction of the feeding belt conveying mechanism (22), the plurality of sets of feeding belt conveying mechanisms (22) are distributed in a stepped manner from high to low.

16. The hyposupply sorting system of claim 14, wherein: The feeding and bagging mechanism (20) further comprises a grating sensor (23) arranged on the outer side of each set of feeding belt conveying mechanisms (22) and fixed to the feeding and bagging rack (21), and the feeding and bagging rack (21) is provided with a detection opening portion (24) allowing the grating sensor (23) to be exposed.

17. The hyposupply sorting system of claim 1, wherein: The sorting trolley (30) comprises a trolley frame (31) movably mounted on the fixed frame (10), and a material moving belt conveying mechanism (32) mounted on the trolley frame (31). The material moving belt conveying mechanism (32) has a material moving conveying belt (321), and the outer surface of the material moving conveying belt (321) is fixed with a plurality of bars (322) arranged in parallel along the length direction of the material moving conveying belt (321).

18. The hyposystem according to claim 17, characterized in that: The sorting trolley (30) further comprises a metal sheet fixed on the side of one of the bars (322), and a proximity switch fixed to the trolley frame (31), and the proximity switch can sense the metal sheet.

19. The hyposupply sorting system of claim 17, wherein: The sorting trolley (30) further comprises photoelectric sensors and reflective plates fixed to the trolley frame (31), the photoelectric sensors and reflective plates are vertically distributed, the material moving conveying belt (321) passes between the photoelectric sensors and reflective plates and is provided with a light transmission hole, the light transmission hole can be moved to a position opposite to the reflective plate.

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