Tray stacking and splitting device

Abstract

The utility model discloses a tray stacking and splitting device which comprises a recycling assembly, a tray stacking and splitting assembly and a tray stacking and splitting assembly. The splitting assembly comprises a first splitting part, a second splitting part, a third splitting part and a fourth splitting part, each splitting part comprises a rotary vane and a rotary rod, each rotary vane is arranged around each rotary rod, and each rotary vane is provided with a starting end, a tail end and a slope surface arranged between the starting end and the tail end; the transmission assembly comprises a first fixing plate, the first fixing plate is arranged on the machine frame, the splitting pieces are arranged at the four corners of the first fixing plate respectively, and the rotating rods extend upwards from the four corners of the first fixing plate.

Description

Technical Field

[0001] The utility model relates to the technical field of security inspection, in particular to a tray stacking and splitting device. Background Art

[0002] In various security inspection places, such as airports, railway stations, and subways, when passengers undergo security inspection, the commonly used trays need to be sorted out by staff in a timely manner. However, the number of trays that need to be sorted out regularly is large and the weight is heavy, resulting in low efficiency and high labor intensity for the staff to sort out the trays. At the same time, the sorting efficiency of the staff will also affect the subsequent security inspection efficiency of passengers, and it is easy to cause passengers to gather around the security inspection line, further affecting the security inspection efficiency.

[0003] The tray sorting technologies of the prior art include: 1) Using chains, synchronous belts, or lead screws, etc., to lift and recycle trays. For example, the invention patent with the publication number CN 117184816 A and the title "A Lifting Device for Continuously Supplementing Baggage Trays" discloses a structure for lifting trays using a linear module. This structure can dock the trays with the return line through lifting, completing the recycling of the trays. However, for the state where multiple trays are stacked, this device cannot separate the stacked trays and cannot recycle the stacked trays one by one; 2) Using a swing arm structure to achieve the docking and conversion between the conveying line and the return line to recycle the trays. For example, the utility model patent with the publication number CN216350432U and the title "An Intelligent Security Inspection Line C-Type Basket Return System" discloses a tray recycling device that uses a swing arm to achieve pitching swing to complete the conversion and docking between the conveying line and the basket return line, realizing the return of the trays. However, for the state where multiple trays are stacked, this structure cannot separate the stacked trays and still cannot recycle the stacked trays one by one; 3) Using telescopic parts to support the trays, and then controlling the telescopic movement of the support parts to achieve the separation of the trays. For example, the invention patent with the publication number CN 112849911 A and the title "Unframing Device, Security Inspection System, Unframing Method, and Computer-Readable Storage Medium" discloses a tray recycling device that uses four electric cylinders on each side, with the front end of the electric cylinder connected to the support part. By logically controlling the telescopic movement of the electric cylinders, the support and dropping of the trays are achieved, and thus the stacked trays can be separated and recycled one by one. However, since this method requires more support parts to achieve tray separation, and each support part requires separate power, the synchronism of the telescopic parts is poor, and the cost of using this mechanism is relatively high; 4) Using the synchronous rotation of multiple layers of screws to separate and recycle the trays. For example, the invention patent with the publication number CN109502251A and the title "A Spiral Up-and-Down Lifting and Horizontal Conveying Mechanism" discloses a tray recycling device that uses a multi-layer spiral structure for transmission. The spiral can separate the stacked trays, and the separated trays rotate and descend along the screw rod to the recycling transmission line. Since this conveying requires the synchronous rotation of four screws to smoothly achieve the downward transmission of the trays, the synchronism of the four screw rods is very important. In actual processes, various situations are often encountered, such as accidental conditions like tray deformation, which may cause the trays to be stuck by the spiral. After being stuck, the staff cannot take out the trays stuck inside the spiral.

[0004] In summary, it is urgent to develop a tray sorting device that can not only separate and recycle the stacked trays one by one, but also reduce the possibility of the trays being stuck by a similar spiral structure, and is convenient for the staff to quickly take out the trays and eliminate the faults. Utility Model Content

[0005] An object of the present utility model is to provide a pallet stacking and splitting device, which can achieve layer-by-layer separation of multiple stacked pallets, can be driven by a single power source, has high synchronism, is easy to control, has a low cost, and uses a splitting component when separating pallets, which can quickly separate pallets and avoid the situation where pallets are stuck and cannot be taken out.

[0006] Other advantages and features of the present utility model are fully embodied by the following detailed description and can be achieved by the combination of means and devices specifically pointed out in the appended claims.

[0007] According to one aspect of the present utility model, a pallet stacking and splitting device of the present utility model capable of achieving the foregoing object and other objects and advantages includes:

[0008] A recycling component, the recycling component includes a frame;

[0009] A splitting component, the splitting component includes a first splitting member, a second splitting member, a third splitting member and a fourth splitting member. Each splitting member includes a rotating blade and a rotating rod. Each rotating blade is arranged around each rotating rod. Each rotating blade has a starting end, a tail end and a slope surface arranged between the starting end and the tail end. Among them, the first splitting member and the second splitting member have the same rotation direction, the third splitting member and the fourth splitting member have the same rotation direction, and the rotation directions of the second splitting member and the fourth splitting member, the second splitting member and the third splitting member, and the fourth splitting member and the first splitting member are all symmetrical directions;

[0010] A transmission component, the transmission component includes a first fixing plate, the first fixing plate is arranged on the frame, each splitting member is respectively arranged at four corners of the first fixing plate, and each rotating rod extends upward from the four corners of the first fixing plate.

[0011] According to an embodiment of the present utility model, the recycling component further includes a first limit sensor and a second limit sensor. The first limit sensor and the second limit sensor are sequentially arranged on the frame, and the first limit sensor is located above the second limit sensor.

[0012] According to an embodiment of the present utility model, the recycling component further includes a third limit sensor. The first limit sensor, the second limit sensor and the third limit sensor are sequentially arranged on the frame. The first limit sensor is located above the second limit sensor, and the second limit sensor is located above the third limit sensor.

[0013] According to an embodiment of the present utility model, the recycling component includes a transition roller, the transition roller is arranged on the frame, and the transition roller is arranged at the entrance of the frame.

[0014] According to an embodiment of the present utility model, the transmission assembly includes a motor, a first speed reducer, a second speed reducer, and a second fixing plate. The motor is disposed on the second fixing plate through the first speed reducer and the second speed reducer. The first speed reducer and the second speed reducer are disposed on the second fixing plate, and the second fixing plate is disposed on the first fixing plate.

[0015] According to an embodiment of the present utility model, the transmission assembly further includes four upper bearings and four lower bearings. Each upper bearing and each lower bearing are respectively fitted and installed on the tops and bottoms of the first split member, the second split member, the third split member, and the fourth split member. The first split member, the second split member, the third split member, and the fourth split member are all fixed by any one of the upper bearings and any one of the lower bearings.

[0016] According to an embodiment of the present utility model, the transmission assembly further includes four cushion members. Each cushion member is respectively disposed at the four corners of the first fixing plate, and each lower bearing is respectively disposed on each cushion member.

[0017] According to an embodiment of the present utility model, the transmission assembly includes a synchronous belt group, a synchronous pulley group, and a tensioning pulley group. The synchronous pulley group is respectively disposed inside each cushion member, the first speed reducer, and the second speed reducer. The tensioning pulley group is respectively disposed on the first tensioning member, the second tensioning member, the third tensioning member, and the fourth tensioning member. The synchronous belt group is respectively disposed on the synchronous pulley group and the tensioning pulley group.

[0018] According to an embodiment of the present utility model, it further includes a transmission assembly. The transmission assembly includes a transmission roller, a descending induction member, a discharging induction member, and a support plate. The descending induction member and the discharging induction member are both disposed on the side surface of the support plate, and each transmission roller is disposed on the support plate.

[0019] According to an embodiment of the present utility model, the transmission assembly includes one or more buffers. Each buffer and the transmission roller are spaced apart on the support plate.

[0020] The beneficial effects of the present utility model are as follows: Each of the splitting components is symmetrically arranged, and the rotation directions of the symmetrically arranged splitting components are symmetric. During the rotation of the four splitting components, the tray will be subjected to symmetrically directed component forces generated by the four splitting components, and the acting component forces cancel each other out, enabling the tray to maintain a relatively stable position during the descent; it can strip the stacked trays into individual ones for return conveyance; by using a single-layer 360-degree rotating blade, it can avoid the situation where the tray is stuck inside the device due to non-synchronization and severe deformation, or it is difficult to remove the tray after it is stuck inside the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 6 is a three-dimensional schematic view of a tray stacking and splitting device with a tray according to an embodiment of the present utility model.

[0022] Figure 2 FIG. 10 is a three-dimensional schematic view of the internal structure of the tray stacking and splitting device according to the above embodiment of the present utility model.

[0023] Figure 3 FIG. 14 is a three-dimensional schematic view of the splitting component of the tray stacking and splitting device according to the above embodiment of the present utility model.

[0024] Figure 4 FIG. 18 is a schematic view of the splitting process a of the tray stacking and splitting device according to the above embodiment of the present utility model.

[0025] Figure 5 FIG. 22 is a schematic view of the splitting process a of the tray stacking and splitting device according to the above embodiment of the present utility model.

[0026] Figure 6 FIG. 26 is a schematic view of the splitting process a of the tray stacking and splitting device according to the above embodiment of the present utility model.

[0027] Figure 7 FIG. 30 is a three-dimensional schematic view of the splitting assembly and the transmission assembly of the tray stacking and splitting device according to the above embodiment of the present utility model.

[0028] Figure 8 FIG. 34 is a three-dimensional schematic view of the transmission assembly of the tray stacking and splitting device according to the above embodiment of the present utility model.

[0029] Figure 9 FIG. 38 is a three-dimensional schematic view of the transmission assembly of the tray stacking and splitting device according to the above embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and other obvious variations can be conceived by those skilled in the art. The basic principles defined in the following description of the present utility model can be applied to other embodiments, variations, improvements, equivalent solutions, and other technical solutions that do not depart from the spirit and scope of the present utility model.

[0031] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present utility model.

[0032] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be construed as a limitation on the quantity. In addition, in the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present utility model, it should be understood that terms such as "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through a medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0035] As Figures 1 to 9 shown, a tray stacking and splitting device of an embodiment of the present utility model is disclosed. The tray stacking and splitting device is applied to various security inspection sites. The tray stacking and splitting device is used to automatically split the trays that are automatically stacked, facilitating the transportation by an external transmission device. The stacked trays are peeled off and transported down by the tray stacking and splitting device, solving the problems of high work intensity and low efficiency caused by the staff manually sorting the trays.

[0036] As Figures 1 to 2As shown in the figure, the tray stacking and splitting device includes a recycling component 10, a splitting component 20, a transmission component 30, and a transmission component 40. The splitting component 20, the transmission component 30, and the transmission component 40 are all arranged in the recycling component 10. The recycling component 10 includes a frame 11, a tray 12, a transition roller 13, a first limit sensor 14, a second limit sensor 15, and a third limit sensor 16. The tray 12 is placed inside the frame 11. The transition roller 13 is arranged on the frame 11 and is used to convey the tray 12. The first limit sensor 14, the second limit sensor 15, and the third limit sensor 16 are sequentially arranged on the frame 11. The first limit sensor 14 is located above the second limit sensor 15, and the second limit sensor 15 is located above the third limit sensor 16. The first limit sensor 14, the second limit sensor 15, and the third limit sensor 16 are used to detect the stacking height of the tray 12. If the first limit sensor 14 detects the tray 12, the tray 12 will no longer be stacked continuously. If the third limit sensor 16 detects that there is no tray 12, the tray stacking and splitting device will issue a warning to inform the staff to put in any tray 12, and then start receiving the next tray 12 and perform splitting and dropping operations. Among them, the second limit sensor 15 is used to detect whether there is a penultimate tray 12, and the second limit sensor 15 operates in cooperation with the first limit sensor 14 and the third limit sensor 16.

[0037] In the specific implementation process, when the stacked trays 12 are reduced and the first limit sensor 14 does not sense the presence of the trays 12, at this time, the transmission system 30 stops operating, can continue to receive the trays 12 and stack them, and can prevent problems such as excessive noise when the trays 12 fall due to excessive height and deformation when the trays 12 are dropped during automatic stacking of the subsequent trays 12.

[0038] Preferably, at least one tray 12 is left at the sensing position of the third limit sensor 16 to ensure that the subsequent trays 12 can be stacked normally. When the third limit sensor 16 has no sensing, the subsequent trays 12 cannot perform the dropping action, and the tray stacking and splitting device is in an alarm state and will immediately inform the staff to intervene. The second limit sensor 15 can detect the penultimate tray 12, play a protective role, prevent failures caused by the invalidation of the first limit sensor 14 and the third limit sensor 16, improve the working efficiency of the tray stacking and splitting device, and extend the service life. It should be noted that the tray stacking and splitting device needs to retain one tray 12 in the frame 11 to guide the stacking position of the next tray 12.

[0039] As shown Figure 3 in the figure, it is a partial detail view of the splitting component 20. The splitting component 20 includes a first splitting piece 21, a second splitting piece 22, a third splitting piece 23 and a fourth splitting piece 24. The first splitting piece 21, the second splitting piece 22, the third splitting piece 23 and the fourth splitting piece 24 are respectively arranged at the four corners of the recycling component 10. The first splitting piece 21 includes a rotating blade 211 and a rotating rod 212. The rotating blade 211 is arranged around the rotating rod 212. The rotating blade 211 has a starting end 2111, a tail end 2112, and a slope surface 2113 located between the starting end 2111 and the tail end 2112. The starting end 2111 is located at the high end, the tail end 2112 is located at the low end. The slope surface 2113 is an inclined rotating slope surface. The slope surface 2113 connects the starting end 2111 and the tail end 2112. The rotating rod 212 has a rod head 2121 and a rod body 2122. The rod head 2121 is arranged on the rod body 2122. The rod head 2121 is arranged at the other end of the rod body 2122. The rod head 2121 is located at the top of the rod body 2122. It should be noted that the principles of the second splitting piece 22, the third splitting piece 23 and the fourth splitting piece 24 are the same as those of the first splitting piece 21. Each splitting piece has the rotating blade, the rotating rod, and the starting end, the tail end, the slope surface of the rotating blade, and the rod head and the rod body of the rotating rod with the same settings. For the sake of concise description and easy understanding, it will not be elaborated here.

[0040] Preferably, the rotating blade is in the shape of a blade.

[0041] It should be noted that each rotating rod 212 can be rotated. The outer shape of the rotating blade 211 is designed as a gradually descending type according to the outer shape structure of the tray 12. When the rotating rod 212 is rotated, the tray 12 supported by the rotating blade 211 can gradually descend.

[0042] Preferably, the range surrounded by the rotating blade 211 is designed as one layer. From the cross-section view, the surrounding angle of the rotating blade 211 is 360 degrees, which can prevent the tray 12 from being stuck in the rotating blades of extra layers or being difficult to take out when the tray 12 is stuck during the descending process due to the asynchronous rotation of the rotating rods 212 of the four splitting pieces or the serious deformation of the tray 12.

[0043] In an actual use scenario, after the height of the stacked pallet 12 exceeds the height of the pallet 12 at the starting position and is sensed by the first limit sensor 14, at this time, the transmission system 30 starts to act, causing the first splitting member 21, the second splitting member 22, the third splitting member 23, and the fourth splitting member 24 to start rotating synchronously. Before the stacked pallet 12 is split, the starting ends of the rotating blades of each splitting member jointly support any one of the pallets 12. When each rotating blade is rotated by a certain angle along each rod body, the slopes of each rotating blade jointly support the previous pallet 12, and the starting ends of the rotating blades jointly support the second pallet 12. At this time, each rotating blade jointly supports two pallets 12 at the same time, and the second pallet 12 is separated from the previous pallet 12 by each rotating blade. When each rotating blade continues to rotate until each rotating blade is rotated by 360 degrees, the previous pallet 12 falls onto the transmission roller 41, and the second pallet 12 is jointly supported by each rotating blade, completing one round of splitting and preparing for the next round of splitting.

[0044] Further, the transmission assembly 30 includes a motor 31, a first speed reducer 32, a second speed reducer 33, four upper bearings 34, four lower bearings 35, a first tensioning member 361, a second tensioning member 362, a third tensioning member 363, a fourth tensioning member 364, a first fixing plate 371, a second fixing plate 372, four cushion members 38, a synchronous belt group 391, a synchronous pulley group 392, and a tensioning pulley group 393. The second fixing plate 372 and the splitting assembly 20 are provided on the first fixing plate 371. The first splitting member 21, the second splitting member 22, the third splitting member 23, and the fourth splitting member 24 are respectively provided at the four corners of the first fixing plate 371. The motor 31 is provided on the second fixing plate 372 through the first speed reducer 32 and the second speed reducer 33. The first speed reducer 32 and the second speed reducer 33 are provided on the second fixing plate 372. The second fixing plate 372 is provided on the first fixing plate 371. Each upper bearing 34 and each lower bearing 35 are respectively fitted and installed at the top and bottom of the first splitting member 21, the second splitting member 22, the third splitting member 23, and the fourth splitting member 24. Each cushion member 38 is respectively provided at the four corners of the first fixing plate 371. Each lower bearing 35 is respectively provided on each cushion member 38. The first tensioning member 361 is provided on the second splitting member 22. The second tensioning member 362 is provided on the third splitting member 23. The third tensioning member 363 is provided on the fourth splitting member 24. The fourth tensioning member 364 is provided on the first splitting member 21. The synchronous pulley group 392 is respectively provided inside each cushion member 38, the first speed reducer 32, and the second speed reducer 33. The tensioning pulley group 393 is respectively provided on the first tensioning member 361, the second tensioning member 362, the third tensioning member 363, and the fourth tensioning member 364. The synchronous belt group 391 is respectively provided on the synchronous pulley group 392 and the tensioning pulley group 393. Among them, the first tensioning member 361, the second tensioning member 362, the third tensioning member 363, and the fourth tensioning member 364 are used to tension the synchronous belt group 391, and the synchronous pulley group 392 is used to drive the synchronous belt group 391 to run. Further, one end of each rod body 2122 extends upward from each cushion member 38. Further, the first fixing plate 371 is provided on the frame 11.

[0045] The transition roller 13 is provided at the entrance of the frame 11. The transmission assembly 30 is provided on the frame 11 through the first fixing plate 371. The first limit sensing member 14, the second limit sensing member 15, and the third limit sensing member 16 are all provided on the frame 11.

[0046] Further, the transmission assembly 30 is driven by the motor 31, the first speed reducer 32, and the second speed reducer 33 to drive the synchronous belt group 391 and the synchronous pulley group 392, so as to realize the synchronous movement of the first splitting member 21, the second splitting member 22, the third splitting member 23, and the fourth splitting member 24. The motor 31 drives the first speed reducer 32 and the second speed reducer 33. The rotation directions of the output ends of the first speed reducer 32 and the second speed reducer 33 are opposite directions. The two synchronous pulleys of the synchronous pulley group 392 connected to the first speed reducer 32 are used to drive the first splitting member 21 and the second splitting member 22 respectively, so that the rotation directions of the first splitting member 21 and the second splitting member 22 are the same. Similarly, the two synchronous pulleys of the synchronous pulley group 392 connected to the second speed reducer 33 are used to drive the third splitting member 23 and the fourth splitting member 24 respectively, so that the rotation directions of the third splitting member 23 and the fourth splitting member 24 are the same. Thus, the rotation directions of the second splitting member 22 and the fourth splitting member 24, the second splitting member 22 and the third splitting member 23, and the fourth splitting member 24 and the first splitting member 21 are all symmetrical directions.

[0047] Further, the first splitting member 21, the second splitting member 22, the third splitting member 23, and the fourth splitting member 24 are all fixed by any one of the upper bearings 34 and any one of the lower bearings 35. The synchronous belt of the synchronous belt group 391 between the first speed reducer 32 and the second splitting member 22 is tensioned by the first tensioning member 361. The synchronous belt between the first speed reducer 32 and the first splitting member 21 is tensioned by the fourth tensioning member 364. The synchronous belt of the synchronous belt group 391 between the second speed reducer 33 and the fourth splitting member 24 is tensioned by the third tensioning member 363. The synchronous belt of the synchronous belt group 391 between the second speed reducer 33 and the third splitting member 23 is tensioned by the second tensioning member 362. The outer shapes of the second splitting member 22 and the fourth splitting member 24 are symmetrical. The outer shapes of the fourth splitting member 24 and the first splitting member 21 are symmetrical. The outer shapes of the first splitting member 21 and the third splitting member 23 are symmetrical.

[0048] Further, the motor 31, the first speed reducer 32, and the second speed reducer 33 are combined and arranged on the second fixing plate 372. The second fixing plate 372 is arranged on the first fixing plate 371. The ends of the output shafts of the first speed reducer 32 and the second speed reducer 33 are provided with the synchronous pulleys of the synchronous pulley group 391. The first tensioning member 361, the second tensioning member 362, the third tensioning member 363, and the fourth tensioning member 364 are arranged on the first fixing plate 371.

[0049] Further, the transmission component 40 includes a plurality of transmission rollers 41, a descending sensor 421, a discharging sensor 422, a support plate 43, and one or more buffers 44. Among them, the descending sensor 421 and the discharging sensor 422 are both disposed on the side surface of the support plate 32. Each transmission roller 41 is disposed on the support plate 43, and each buffer 44 and the transmission roller 41 are spaced apart from each other on the support plate 43. In an actual application scenario, the descending sensor 421 is used to detect whether the tray 12 has fallen, and the discharging sensor 422 is used to detect whether the tray 12 has been conveyed.

[0050] The transmission component 40 is disposed on the first fixing plate 371 through the cushioning member 38. When the first splitting member 21, the second splitting member 22, the third splitting member 23, and the fourth splitting member 24 rotate one circle, the tray 12 drops downward onto the transmission component 40. In order to avoid loud noise during the dropping process of the tray 12 and deformation of the tray 12 during falling, four buffers 44 are provided. When the descending sensor 421 senses the tray 12, the transmission roller 41 starts to rotate, conveys the tray 12 to other docked lines, and conveys the tray 12 out. When the discharging sensor 422 has no induction, that is, the tray 12 has been output, the transmission roller 41 stops rotating.

Claims

1. A tray stacking and splitting device, characterized in that: include: A recovery assembly, the recovery assembly comprising a frame; A split component, the split component comprises a first split component, a second split component, a third split component and a fourth split component, each of the split components comprises a rotary blade and a rotary rod, each of the rotary blades is arranged around each of the rotary rods, each of the rotary blades has a starting end, a tail end and a slope arranged between the starting end and the tail end, wherein the first split component and the second split component have the same rotation direction, the third split component and the fourth split component have the same rotation direction, and the second split component and the fourth split component, the second split component and the third split component, and the fourth split component and the first split component have symmetrical rotation directions; The transmission assembly includes a first fixed plate, the first fixed plate is arranged on the frame, each of the split parts is respectively arranged at the four corners of the first fixed plate, and each of the rotating rods extends upward from the four corners of the first fixed plate.

2. The tray stacking and splitting device according to claim 1, characterized in that: The recovery component further includes a first position-limiting sensor and a second position-limiting sensor. The first position-limiting sensor and the second position-limiting sensor are sequentially arranged on the frame, and the first position-limiting sensor is located above the second position-limiting sensor.

3. The tray stacking and splitting device according to claim 2, characterized in that: The recovery component also includes a third limit sensing component. The first limit sensing component, the second limit sensing component and the third limit sensing component are arranged on the frame in order. The first limit sensing component is located above the second limit sensing component, and the second limit sensing component is located above the third limit sensing component.

4. The tray stacking and splitting device according to claim 2, characterized in that: The recovery assembly comprises a transition roller, which is arranged on the frame and at the entrance of the frame.

5. The tray stacking and splitting device according to claim 4, characterized in that: The transmission assembly includes a motor, a first reducer, a second reducer, and a second fixed plate. The motor is arranged on the second fixed plate through the first reducer and the second reducer. The first reducer and the second reducer are arranged on the second fixed plate. The second fixed plate is arranged on the first fixed plate.

6. The tray stacking and splitting device according to claim 5, characterized in that: The transmission assembly also includes four upper bearings and four lower bearings, each of the upper bearings and each of the lower bearings are respectively mounted on the top and bottom of the first split part, the second split part, the third split part and the fourth split part, and the first split part, the second split part, the third split part and the fourth split part are all fixed to any of the upper bearings and any of the lower bearings.

7. The tray stacking and splitting device according to claim 6, characterized in that: The transmission assembly further comprises four cushions, each of which is respectively arranged at four corners of the first fixing plate, and each of the lower bearings is respectively arranged at each of the cushions.

8. The tray stacking and splitting device according to claim 1, characterized in that: It further includes a transmission component, which includes a transmission roller, a descending sensor, a material discharging sensor and a support plate. The descending sensor and the material discharging sensor are both arranged on the side of the support plate, and each of the transmission rollers is arranged on the support plate.

9. The tray stacking and splitting device according to claim 8, characterized in that: The transmission assembly includes one or more buffers, and each buffer is arranged on the support plate at a distance from the transmission roller.

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