Lattice box pushing and transferring system and method

Abstract

The invention provides a lattice opening box pushing and transferring system and method, and provides a transferring scheme of building flat layer laying between an empty box conveying line and a full box conveying line of an automatic bag collecting and conveying system so as to further improve the full box moving and conveying speed at a sorting lattice opening. Therefore, the transfer efficiency of the turnover box between an empty box conveying line and a full box conveying line is obviously improved on the whole. Comprising a grid opening box pushing machine, a transition conveying line and a transfer machine, wherein the grid opening box pushing machine is arranged at a sorting grid opening and used for connecting unloaded turnover boxes from an empty box conveying line and moving away the turnover boxes completing goods collection, and the transition conveying line and the transfer machine are sequentially connected to transfer the turnover boxes in a full box state to a full box conveying line; the whole process of grid opening collection, box pushing and moving away and transferring and transferring is completed on conveying planes with the same height after the grid opening box pushing machine, the transition conveying line and the transferring machine are connected. And the two groups of transfer machines are spliced with each other at an angle of 90 degrees.

Description

Technical Field

[0001] The present application proposes a box-pushing and transfer system and method for cargo sorting and automatic packaging, which belongs to the field of automation control and logistics warehousing. Background Art

[0002] In the transportation and sorting operation site of the logistics and warehousing industry, there are high requirements for the accuracy and efficiency of the sorting process. With the rapid development of the domestic e-commerce industry, automated sorting equipment has improved the operation of logistics transfer sites while raising new issues on how to efficiently implement package collection operations.

[0003] In order to solve the current situation of low efficiency and high operating cost of the existing manual package collection methods at home and abroad, the applicant of this case has previously disclosed the relevant technical upgrades and improvements in the following scheme. The patent application number is CN202311332596.0, and the name is automatic package collection system and control method thereof. It adopts the control method of transferring the sorted batch packages to the designated centralized package building point through the flow conveyor line, so as to realize that one operator can handle multiple sorting grids at one package building point, including a package collection component, a turnover box flow component, a package building component, and a turnover box; the package collection component includes a drop grid chute docked at each sorting grid of the cross-belt sorting machine, a package collection unit located vertically below the drop grid chute, and a full box conveyor line and an empty box conveyor line symmetrically connected to both sides of the package collection unit. Although this scheme can meet the requirement that the full grid turnover box after sorting can be removed in time, thereby ensuring the continuous operation of the sorting grid and minimizing the locking time of the sorting grid. However, no effective solution has been proposed for the transfer operation of turnover boxes between full box conveyor lines and empty box conveyor lines.

[0004] The existing technology of packing and transferring at the opening generally adopts the lifting and transferring method. The operation rhythm of the lifting and transferring equipment is slow, and the equipment maintenance at different working heights is inconvenient and the cost is high. More importantly, the belt is prone to slippage during the lifting and transferring process, which further reduces the overall lifting and transfer efficiency.

[0005] In view of this, this patent application is proposed. Summary of the invention

[0006] The grid-pushing box transfer system and method described in the present application aims to solve the problems existing in the above-mentioned prior art and proposes a transfer scheme of building a flat layer between the empty box and full box conveyor lines of the automatic package collection and conveying system, so as to further improve the full box removal and conveying rate at the sorting grid, thereby significantly improving the transfer efficiency of the turnover box between the empty box and full box conveyor lines as a whole.

[0007] To achieve the above-mentioned design purpose, the grid push-box transfer system is arranged and connected between the empty box conveyor line and the full box conveyor line of the automatic package collection and conveying system, and includes a grid pusher arranged at the sorting grid to connect the empty turnover boxes from the empty box conveyor line and remove the turnover boxes that have completed cargo collection, and a transition conveyor line and a transfer machine that are connected in sequence to transfer the turnover boxes in a full box state to the full box conveyor line; the turnover boxes complete the entire process of grid collection, box pushing and removal, and transfer and transfer on the conveying plane with the same height after the grid pusher, the transition conveyor line and the transfer machine are connected; the transfer machine is two groups spliced ​​at 90° to each other, and each group of transfer machines has the same structure. After the turnover boxes in a full box state are continuously turned and conveyed by the two groups of transfer machines, they are transferred into the full box conveyor line in the same direction as entering the grid pusher.

[0008] Furthermore, the grid-opening box pushing machine includes an access conveyor line connected to the empty box conveyor line and located below the sorting grid, and a box pushing device connected to the transition conveyor line and used to push full-box turnover boxes from the access conveyor line to the transition conveyor line; the box pushing device includes two sets of parallel guide rails, a turnover box arrival detection device located between the guide rails, a limit baffle assembly located on the side of the guide rails, and two sets of parallel box pushing brackets driven by a box pushing drive assembly.

[0009] Furthermore, the access conveyor line is preferably a roller conveyor line or a narrow belt conveyor.

[0010] Furthermore, the turnover box arrival detection device is arranged vertically below the guide rail, and is preferably an RFID detection device, and an RFID chip is installed at the bottom of the turnover box.

[0011] Furthermore, the guide rail is composed of a left rail assembly and a right rail assembly that are bent and then welded toward each other, and a concave sliding groove is formed between the left rail assembly and the right rail assembly to provide a linear sliding trajectory for the push box bracket, and the entrance of the sliding groove forms a trumpet shape open to the outside; the limit baffle assembly includes a side baffle connected to the side of the guide rail, and an outer baffle that extends obliquely upward and is located at the inner end of the side baffle, and the connection point of the outer baffle connecting the side baffle is higher than the guide rail.

[0012] Furthermore, the box pusher bracket includes a fixed seat pallet and a non-return elastic block assembly elastically connected to both ends of the fixed seat pallet. The non-return elastic block assembly allows the turnover box to pass in one direction and has a reverse non-return effect. The running direction of the fixed seat pallet carrying the turnover box and the conveying direction of the turnover box on the access conveyor line form an angle of 90° in the horizontal range.

[0013] Furthermore, the anti-return elastic block assembly has a base installed on the fixed seat support plate, one end of the anti-return block is horizontally axially arranged on the base through a rotating axis, and the other end thereof vertically abuts against a anti-return spring arranged inside the base.

[0014] Furthermore, the push box drive assembly includes a transmission chain driven by a servo motor, and the fixed seat support plate is fixedly connected to the transmission chain by an array of chain buckles; the transmission chain is closed-loop wound around the driven sprocket and the transmission sprocket, while part of the transmission chain is slidably embedded in the chain guide and slides back and forth in the horizontal direction; the transmission sprocket is mounted on the transmission shaft through a bearing sleeve, and the servo motor drives the transmission shaft to rotate through a group of chain sprocket assemblies, while the transmission sprocket drives the transmission chain to reciprocate.

[0015] Furthermore, the transfer machine includes a transfer conveyor line which has the same conveying direction and height as the transition conveyor line and is connected to it. A transition plate for blocking and limiting the turnover box is provided at the end of the conveying direction of the transfer conveyor line. A push rod assembly for pushing the turnover box at an angle of 90° along the conveying direction of the transfer conveyor line is provided on one side of the transfer conveyor line; the push rod assembly includes a push rod transmission shaft driven by a push rod reduction motor through a gear chain group, both ends of the push rod transmission shaft are arranged on the frame, two groups of push rod driving gears are sleeved on the push rod transmission shaft, a group of push rod transmission chains are closed-loop connected between each group of push rod driving gears and a group of driven gears arranged at the other end of the frame, and a group of push rods that run horizontally to push the turnover box are fixedly connected between the two groups of push rod transmission chains.

[0016] Based on the above-mentioned grid push box transfer system, the present application also proposes the following grid push box transfer method, including the following grid push box transfer process:

[0017] First, the empty turnover box is transported from the empty box conveyor line to the box pusher, and the sorted cargo packages are collected under the sorting grid. When the turnover box reaches the full box state, the full box detection photoelectric component sends a signal to the WCS system to request to build packages for all the packages in the turnover box.

[0018] Then, the box pusher pushes out the full box horizontally, and transfers it horizontally to the transfer machine via the transition conveyor line.

[0019] Secondly, two groups of transfer machines connected at 90 degrees to each other complete the horizontal shifting of the turnover boxes in turn;

[0020] Finally, the turnover boxes are transferred horizontally to the full box conveyor line.

[0021] In summary, the box-pushing and box-transferring system and method proposed in this application have the following advantages:

[0022] 1. This application undertakes the packaging operation at the sorting grid. When the boxes are full, they are transferred to the full box conveyor line through the grid pusher and transfer machine, thus realizing an efficient and accurate packaging, pushing and transferring operation process, which helps to improve the efficiency of fully automatic packaging and transportation as a whole.

[0023] 2. This application adopts the leveling auxiliary and connection scheme of the grid pusher, transition conveyor line and transfer machine, which not only helps to significantly improve the transfer rate, but also makes the turnover box smoother and more stable during the transfer process, and is not easy to damage the box body.

[0024] 3. The system equipment proposed in this application has low cost, convenient maintenance and relatively simple electrical control logic, which is conducive to subsequent system expansion and control software upgrades. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application will now be further described with reference to the following drawings;

[0026] Figure 1 A flow chart of the packing and transshipment operation for applying this application;

[0027] Figure 2 This is a schematic diagram of the box-pushing transfer system proposed in this application;

[0028] Figure 3 This is a schematic diagram of a box-pushing machine;

[0029] Figure 4 A schematic diagram of the guide track;

[0030] Figure 4-1 This is a schematic diagram of the turnover box passing through the guide track;

[0031] Figure 5 It is a schematic diagram of the push box transmission assembly;

[0032] Figure 6 A schematic diagram of a check assembly;

[0033] Figure 7 It is a schematic diagram of the connection and operation of the push box assembly;

[0034] Figure 8 It is a schematic diagram of the transfer machine;

[0035] Fig. 9 Schematic diagram of the transfer machine pushing the turnover box to turn 90°;

[0036] Fig.10 It is a schematic diagram of the transfer and steering transmission assembly;

[0037] Fig.11 and Fig.12 They are respectively the connection and operation schematic diagrams of different local structures of the transfer and steering transmission assembly;

[0038] Fig.13 This is a schematic diagram of the principle of push rod origin positioning detection;

[0039] Fig.14 It is a schematic diagram of the connection between the push rod and the transmission chain; DETAILED DESCRIPTION

[0040] Embodiment 1, as Figures 1 to 14 As shown, the present application proposes a novel grid-pushing box transfer system, which is arranged and connected between the empty box conveying line and the full box conveying line of the automatic package collection and conveying system.

[0041] The said slot box pushing and transferring system comprises a slot box pushing machine 1 arranged at the sorting slot to connect the empty turnover box 4 from the empty box conveying line (not shown in the figure) and remove the turnover box 4 after the goods collection is completed, and a transition conveying line 3 and a transfer machine 2 connected in sequence to transfer the turnover box 4 in the full box state to the full box conveying line (not shown in the figure). The turnover box 4 completes the whole process of slot collection, box pushing and removal and transfer and transferring on the conveying plane with the same height after the slot box pushing machine 1, the transition conveying line 3 and the transfer machine 2 are connected.

[0042] The slot box pusher 1 is arranged at the sorting slot of the cargo sorting and conveying system (such as a cross-belt sorting line). When the turnover box 4 is connected from the empty box conveying line, it can stop under the sorting slot to collect cargo packages.

[0043] The transition conveyor line 3 may preferably be a roller conveyor line to convey the full turnover boxes 4 from the box pusher 1 to the transfer machine 2.

[0044] The transfer machines 2 are two groups connected at 90 degrees to each other. Each group of transfer machines 2 has the same structure. The turnover boxes 4 in the full box state are continuously turned and transported by the two groups of transfer machines 2, and then transferred into the full box conveyor line in the same direction as entering the grid pusher 1.

[0045] like Figure 1 As shown, based on the above-mentioned box-pushing and box-transferring system, the following box-pushing and box-transferring method can be implemented:

[0046] First, the empty turnover box 4 is transported from the empty box conveyor line to the slot pusher 1, and the sorted cargo parcels are collected under the sorting slot; when the turnover box 4 reaches the full box state, the full box detection photoelectric component sends a signal to the WCS system to request to build a package for all the parcels in the turnover box 4;

[0047] Then, the box pusher 1 pushes out the full box 4 horizontally, and transfers it horizontally to the transfer machine 2 via the transition conveyor line 3;

[0048] Secondly, two groups of transfer machines 2 connected at 90 degrees to each other sequentially complete the horizontal shifting of the turnover boxes 4;

[0049] Finally, the turnover box 4 is horizontally transferred to the full box conveyor line.

[0050] The grid box pushing machine 1 includes an access conveyor line 101 connected to the empty box conveyor line and located below the sorting grid (not shown in the figure), and a box pushing device connected to the transition conveyor line 3 and used to push the turnover box 4 in a full box state from the access conveyor line 101 to the transition conveyor line 3.

[0051] Wherein, the access conveyor line 101 may preferably be a conveying device such as a roller conveyor line, a narrow belt conveyor, etc.;

[0052] The box pushing device comprises two sets of parallel guide rails 103, a turnover box arrival detection device 104 located between the guide rails 103, a limit baffle assembly 105 located on the side of the guide rails 103, and two sets of parallel box pushing brackets 102 driven by a box pushing drive assembly 106;

[0053] Specifically, the turnover box arrival detection device 104 is arranged vertically below the guide rail 103, and it can be preferably an RFID detection device, and an RFID chip is installed at the bottom of the turnover box 4 accordingly; when the turnover box 4 is pushed from the access conveyor line 101 to the transition conveyor line 3 by the box pushing device, the turnover box arrival detection device 104 can send the identity and arrival information of the turnover box 4 to the WCS system or the package collection PLC by reading and identifying the information in the RFID chip;

[0054] The guide rail 103 is composed of a left rail component 1031 and a right rail component 1032 that are bent and welded to each other. A concave sliding groove is formed between the left rail component 1031 and the right rail component 1032 to provide a linear sliding track for the push box bracket 102. The entrance of the sliding groove is formed in a trumpet shape that is open to the outside to guide and limit the push box bracket 102 to slide into the sliding groove.

[0055] The limit baffle assembly 105 includes a side baffle connected to the side of the guide track 103, and an outer baffle 1051 extending obliquely upward at the inner end of the side baffle. The connection point of the outer baffle 1051 connecting the side baffle is higher than the guide track 103. When the turnover box 4 enters the guide track 103 along the bell mouth formed between the left track assembly 1031 and the right track assembly 1032, the bottom of the turnover box 4 is limited left and right by the side baffle of the limit baffle assembly 105. When the turnover box 4 is pushed forward again from a static state, the front part may easily rise due to excessive thrust. In this regard, the outer baffle 1051 can limit the bottom of the turnover box 4 downward, so that it can smoothly move along and maintain a stable pushing state.

[0056] The box pusher support 102 includes a fixed seat support plate 114 and a non-return elastic block assembly 102-1 elastically connected to both ends of the fixed seat support plate 114. The non-return elastic block assembly 102-1 allows the turnover box 4 to pass in one direction and has a reverse non-return function. The running direction of the fixed seat support plate 114 carrying the turnover box 4 and the conveying direction of the turnover box 4 on the access conveyor line 101 form an angle of 90° in the horizontal range.

[0057] Furthermore, the non-return elastic block assembly 102-1 has a base 1023 installed on the fixed seat support plate 114, one end of the non-return block 1021 is horizontally axially arranged on the base 1023 through the rotating shaft 1022, and the other end thereof vertically abuts against a non-return spring 1024 arranged inside the base 1023; when the turnover box 4 passes through the non-return elastic block assembly 102-1 from the side of the rotating shaft 1022, the turnover box 4 presses down the non-return block 1021 and compresses the non-return spring 1024, and the non-return spring 1024 is compressed and retracted inside the base 1023 to store energy; after the turnover box 4 passes through the non-return elastic block assembly 102-1, the non-return spring 1024 bounces the non-return block 1021 upward, and when the turnover box 4 moves in the opposite direction, it is stopped by the non-return block 1021, so that the turnover box 4 can be pushed by the push box bracket 102 to be transported from the side of the access conveyor line 101 to the side of the transition conveyor line 3.

[0058] The push box driving assembly 106 includes a transmission chain 111 driven by a servo motor 108, and a fixed seat support plate 114 is fixedly connected to the transmission chain 111 through an array of chain buckles 113;

[0059] Furthermore, the transmission chain 111 is wound around the driven sprocket 107 and the transmission sprocket 110 in a closed loop, and a portion of the transmission chain 111 is slidably embedded in the chain guide 112 and slides back and forth in the horizontal direction; the transmission sprocket 110 is sleeved on the transmission shaft 109 through a bearing, and the servo motor 108 drives the transmission shaft 109 to rotate through a set of chain and sprocket assemblies, while the transmission sprocket 110 drives the transmission chain 111 to reciprocate;

[0060] When the turnover box 4 (or the turnover box 4 carried on the pallet) is transported to the access conveyor line 101 below the sorting grid, it is also located on the upper part of the box pusher support 102 of the box pusher device. Driven by the servo motor 108, the transmission chain 111 drives the fixed seat pallet 114 to be pushed out in the horizontal direction. The turnover box 4 (or pallet) is first reversed by the check block 1021, and the fixed seat pallet 114 continues to run horizontally and is pushed forward synchronously by the check block 1021; then it enters the guide track 103 through the limit baffle assembly 105, and the turnover box 4 and the cargo information therein are identified when passing through the turnover box in place detection device 104, and the identification result is uploaded to the WCS system; then, the box pusher device completely pushes the turnover box 4 away from the grid pusher 1 and places it on the transition conveyor line 3, and the transition conveyor line 3 continues to transport the turnover box 4 to the transfer machine 2.

[0061] The transition conveyor line 3 may preferably be a conveying device such as a roller conveyor line, a narrow belt conveyor, etc.;

[0062] The transfer machine 2 includes a frame 209, on which a transfer conveyor line 204 having the same conveying direction and height as the transition conveyor line 3 and connected thereto is arranged, a transition plate 202 for blocking and limiting the turnover box 4 is arranged at the end of the conveying direction of the transfer conveyor line 204, and a push rod assembly 201 for pushing out the turnover box 4 at an angle of 90° along the conveying direction of the transfer conveyor line 204 is arranged on one side of the transfer conveyor line 204;

[0063] The transfer conveyor line 204 may preferably be a conveying device such as a roller conveyor line or a narrow belt conveyor;

[0064] The push rod assembly 201 includes a push rod transmission shaft 2014 driven by a push rod reduction motor 205 through a gear chain group 2013, both ends of the push rod transmission shaft 2014 are axially arranged on a frame 209, two groups of push rod driving gears 208 are sleeved on the push rod transmission shaft 2014, and a group of push rod transmission chains 2012 are closed-loop connected between each group of push rod driving gears 208 and a group of driven gears axially arranged at the other end of the frame 209, and a group of push rod 2011 that runs horizontally to push the turnover box 4 is fixedly connected between the two groups of push rod transmission chains 2012;

[0065] In order to improve the horizontal trajectory and stability of each set of transmission chains 2012 during operation, two sets of parallel push rod chain guide rails 207 with concave linear grooves are arranged on the frame 209, and a part of the push rod transmission chain 2012 is slidably embedded in the grooves of the push rod chain guide rails 207 and reciprocates in a linear direction.

[0066] In order to improve the accuracy of monitoring the running distance of the push rod 2011 pushing the turnover box 4, a slot-shaped photoelectric 203 with a side opening is set on one side of the frame 209. Correspondingly, a group of detection plates 201-1 are installed on the side end of the push rod 2011. When the push rod 2011 moves along the surface of the transfer conveyor line 204, the detection plate 201-1 passes through the side opening of the slot-shaped photoelectric 203 in the horizontal direction, thereby triggering a photoelectric detection signal. The signal is uploaded to the WCS system or the package collection PLC to generate the starting origin of the running trajectory of the push rod 2011 to push the turnover box 4 to make a 90° turn, and then track and calculate the distance value of the push rod 2011 pushing the turnover box 4 to run.

[0067] Furthermore, the two ends of the push rod 2011 are fixedly connected to the inner side of the push rod transmission chain 2012 through the chain buckle 208, so that when part of the push rod transmission chain 2012 slides and is embedded in the groove of the push rod chain guide rail 207, the two ends of the push rod 2011 and the push rod chain guide rail 207 do not interfere with each other. At the same time, the fixed connection through the chain buckle 208 also helps to improve the tightness of the connection between the push rod 2011 and the push rod transmission chain 2012.

[0068] The two groups of transfer machines 2 are spliced ​​at 90° to each other, and the turnover box 4 continuously makes two 90° turns at the same height on the two groups of transfer machines 2. When the turnover box 4 enters the subsequent full box conveyor line, it can maintain the same direction of conveyance as entering the grid pusher 1, thereby completing a complete transfer process from an empty box to a full box state.

[0069] The above contents and the embodiments given in the accompanying drawings are only preferred solutions for achieving the purpose of the present invention. Those skilled in the art can be inspired by this and directly deduce other alternative structures that conform to the design concept of the present invention. Other structural features obtained thereby should also belong to the scope of the solution described in the present invention.

Claims

1. A box-pushing and transferring system, characterized in that: It is set up between the empty box conveyor line and the full box conveyor line of the automatic package collection and conveying system, including a box pusher set up at the sorting grid to connect the empty turnover box from the empty box conveyor line and remove the turnover box that has completed the collection of goods, and a transition conveyor line and a transfer machine that are sequentially connected to transfer the turnover box in the full box state to the full box conveyor line; The turnover boxes complete the whole process of box collection, box removal and transfer on the conveying plane with the same height after the box pusher, transition conveyor line and transfer machine are connected; The transfer machines are two groups connected at 90 degrees to each other. Each group of transfer machines has the same structure. The full-box turnover boxes are continuously turned and transported by the two groups of transfer machines, and then transferred into the full-box conveyor line in the same direction as the grid pusher.

2. The box-pushing and transferring system according to claim 1, characterized in that: The slot box pusher comprises an access conveyor line connected to the empty box conveyor line and located below the sorting slot, and a box pusher device connected to the transition conveyor line and used to push full box turnover boxes from the access conveyor line to the transition conveyor line; The box pushing device comprises two sets of parallel guide rails, a turnover box arrival detection device located between the guide rails, a limit baffle assembly located on the side of the guide rails, and two sets of parallel box pushing brackets driven by a box pushing drive assembly.

3. The box-pushing and transferring system according to claim 2, characterized in that: The access conveyor line is preferably a roller conveyor line or a narrow belt conveyor.

4. The box-pushing and transferring system according to claim 2, characterized in that: The turnover box arrival detection device is arranged vertically below the guide track, and is preferably an RFID detection device, and an RFID chip is installed at the bottom of the turnover box.

5. The box-pushing and transferring system according to claim 2, characterized in that: The guide rail is composed of a left rail component and a right rail component that are bent and welded to each other. A concave sliding groove is formed between the left rail component and the right rail component to provide a linear sliding track for the push box bracket. The entrance of the sliding groove forms a trumpet shape that is open to the outside. The limit baffle assembly comprises a side baffle connected to the side of the guide track, and an outer baffle extending obliquely upward at the inner end of the side baffle, and the connection point of the outer baffle connecting the side baffle is higher than the guide track.

6. The box-pushing and transferring system according to claim 2, characterized in that: The box pusher bracket includes a fixed seat support plate and a non-return elastic block assembly elastically connected to both ends of the fixed seat support plate. The non-return elastic block assembly allows the turnover box to pass in one direction and has a reverse non-return effect. The running direction of the fixed seat support plate carrying the turnover box and the conveying direction of the turnover box on the access conveyor line form an angle of 90° in the horizontal range.

7. The box-pushing and transferring system according to claim 6, characterized in that: The anti-return elastic block assembly has a base installed on a fixed seat support plate, one end of the anti-return block is horizontally axially arranged on the base through a rotating shaft, and the other end thereof vertically abuts against a anti-return spring arranged inside the base.

8. The box-pushing and transferring system according to claim 2, characterized in that: The push box driving assembly includes a transmission chain driven by a servo motor, and the fixed seat support plate is fixedly connected to the transmission chain through an array of chain buckles; The transmission chain is wound around the driven sprocket and the transmission sprocket in a closed loop, and part of the transmission chain is slidably embedded in the chain guide rail and slides back and forth in the horizontal direction; the transmission sprocket is mounted on the transmission shaft through a bearing sleeve, and the servo motor drives the transmission shaft to rotate through a set of chain and sprocket assemblies, while the transmission sprocket drives the transmission chain to reciprocate.

9. The box-pushing and transferring system according to claim 1, characterized in that: The transfer machine comprises a transfer conveyor line which has the same conveying direction and height as the transition conveyor line and is connected to the transfer conveyor line. A transition plate for blocking and limiting the turnover box is provided at the end of the conveying direction of the transfer conveyor line. A push rod assembly for pushing out the turnover box at an angle of 90° along the conveying direction of the transfer conveyor line is provided on one side of the transfer conveyor line. The push rod assembly includes a push rod transmission shaft driven by a push rod reduction motor through a gear chain group. Both ends of the push rod transmission shaft are arranged on a frame. Two groups of push rod driving gears are sleeved on the push rod transmission shaft. A group of push rod transmission chains are closed-loop connected between each group of push rod driving gears and a group of driven gears arranged at the other end of the frame. A group of push rods that run horizontally to push the turnover box are fixedly connected between the two groups of push rod transmission chains.

10. A method for transferring boxes by pushing boxes at a grid using the system for transferring boxes by pushing boxes at a grid as claimed in claims 1 to 9, characterized in that: Including the following box transfer process: First, the empty turnover box is transported from the empty box conveyor line to the box pusher, and the sorted cargo packages are collected under the sorting grid. When the turnover box reaches the full box state, the full box detection photoelectric component sends a signal to the WCS system to request to build packages for all the packages in the turnover box. Then, the box pusher pushes out the full box horizontally, and transfers it horizontally to the transfer machine via the transition conveyor line. Secondly, two groups of transfer machines connected at 90 degrees to each other complete the horizontal shifting of the turnover boxes in turn; Finally, the turnover boxes are transferred horizontally to the full box conveyor line.

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