Automatic pallet supply device, pallet sorting table and security inspection system having the same

Abstract

The present application discloses an automatic pallet supply device and a pallet sorting table and security inspection system having the same. The automatic pallet supply device includes: at least one conveying mechanism, which conveys pallets at different heights; at least one lifting mechanism, which is used to move the pallet on the conveying mechanism at a first height to the conveying mechanism at a second height, wherein the first height is different from the second height; a sorting table frame, which is used to carry at least one conveying mechanism and at least one lifting mechanism; at least one telescopic pallet mechanism, which is installed on the top of the sorting table frame, the telescopic pallet mechanism includes a pair of flexible plates arranged opposite to each other, the flexible plates are separated relative to each other to form an opening, the pallet can pass through the opening, the flexible plates can move relative to each other to form a plane, and the pallet can be located on the telescopic pallet mechanism. The automatic pallet supply device also includes a conveying mechanism and a pallet translation mechanism, wherein the pallet translation mechanism is installed on the conveying mechanism.

Description

[0001] This application is a divisional application with application number 202011175693.X, application date October 28, 2020, and subject matter “Automatic pallet supply device and pallet sorting table and security inspection system having the same”. Technical Field

[0002] The present application relates to the field of luggage security inspection, and more specifically, to an automatic tray supply device for use in a security inspection system and a security inspection system having the automatic tray supply device. Background Art

[0003] The background description provided herein is intended to generally present the context of this application. To the extent described in this background section, the work of the presently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art against this application.

[0004] Passengers need to undergo a security check on their carry-on baggage before entering the airport station. Generally, the passenger or security inspector takes out an empty tray from the bottom of the sorting table in front of the security check machine and places it on the sorting table. The carry-on baggage and loose personal belongings are placed on the tray. The tray passes through the security check system, and the security inspector uses the security check machine (X-ray inspection) to determine whether the baggage is safe. The security check system distinguishes between safe baggage and suspicious baggage. Safe baggage is handed over to the passenger for collection, and suspicious baggage is placed by the security inspector at the bag opening area, and the corresponding passenger is guided to open the bag for inspection.

[0005] In actual use, since most passengers are using the automated baggage screening system for the first time, they sometimes fail to immediately notice the tray located at the bottom of the check-in counter, requiring security personnel to frequently direct them or manually arrange the tray. Furthermore, the tray's location at the bottom of the check-in counter forces passengers and security personnel to bend over to retrieve it, which is very inconvenient.

[0006] Therefore, a novel automatic tray supply device is urgently needed. Summary of the Invention

[0007] Therefore, the present application provides an automatic tray supply device to solve the above-mentioned and other possible problems in the prior art.

[0008] The present application provides an automatic pallet supply device, which includes: at least one conveying mechanism for conveying pallets at different heights; at least one lifting mechanism for moving a pallet on the conveying mechanism at a first height to the conveying mechanism at a second height, wherein the first height is different from the second height; a tidying table frame for carrying the at least one conveying mechanism and the at least one lifting mechanism; at least one telescopic pallet mechanism installed on the top of the tidying table frame, the telescopic pallet mechanism including a pair of flexible plates arranged opposite to each other, the flexible plates separated relative to each other to form an opening, the pallet can pass through the opening, the flexible plates can form a plane when moved relative to each other, and the pallet can be located on the telescopic pallet mechanism, the automatic pallet supply device also includes a conveying mechanism and a pallet translation mechanism, wherein the pallet translation mechanism is installed on the conveying mechanism.

[0009] In an exemplary embodiment of the present application, the automatic tray feeding device further includes at least one photoelectric detection device installed on the sorting table frame to sense the position of the tray.

[0010] In an exemplary embodiment of the present application, the pallet translation mechanism includes a synchronous pulley, a transmission roller and a toggle member, wherein the transmission roller drives the synchronous pulley to rotate, and the toggle member is located on the synchronous belt to push the pallet to move.

[0011] In an exemplary embodiment of the present application, the pallet translation mechanism includes a roller conveying mechanism, a lifting mechanism and a moving mechanism, wherein a cam in the lifting mechanism lifts the moving mechanism so that the pallet leaves the roller conveying mechanism and is laterally moved by the moving mechanism.

[0012] In an exemplary embodiment of the present application, the lifting mechanism lifts the tray on the conveying mechanism at the first height or the second height to the top of the sorting table frame when the telescopic pallet mechanism is retracted.

[0013] In an exemplary embodiment of the present application, the lifting mechanism includes a drive motor, a linear guide rail, a synchronous belt, a pallet and at least one limit member, wherein the pallet moves up and down through the linear guide rail and the synchronous belt, and the movement range of the pallet is limited by the at least one limit member.

[0014] In an exemplary embodiment of the present application, the tray is foldable or rotatable 90 degrees around one side of the tray.

[0015] In an exemplary embodiment of the present application, the telescopic support plate mechanism further includes a pair of guide rails and at least one pulley sliding in the pair of guide rails, wherein the at least one pulley is mounted on the at least one flexible plate.

[0016] In an exemplary embodiment of the present application, the pair of guide rails face each other and are in a U-shape, and the flexible plate can be bent 90 degrees.

[0017] In an exemplary embodiment of the present application, the at least one conveying mechanism includes at least one electric roller, a plurality of driven rollers and at least one transmission belt, and the at least one electric roller drives the plurality of driven rollers to move through the at least one transmission belt.

[0018] In an exemplary embodiment of the present application, the synchronous pulley or the moving mechanism of the pallet translation mechanism is located between the electric roller and the adjacent driven roller.

[0019] The present application also provides a pallet arranging table, comprising the automatic pallet supply device according to any one of the above claims.

[0020] The present application also provides a baggage security inspection system, comprising the automatic tray supply device according to any one of the above claims.

[0021] The automatic tray supply device of the present application can not only reduce the situation where passengers have to look for trays, making the service more humane, but also avoid passengers from bending over to pick up trays. In addition, the sorting table and case system with the automatic tray supply device can have the characteristics of simple structure and convenient operation. Moreover, the automatic tray supply device makes relatively small changes to the existing security inspection and conveying system, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application will be more fully understood from the detailed description and accompanying drawings. These drawings illustrate one or more embodiments of the present application and, together with the written description, serve to explain the principles of the present application. Wherever possible, the same reference numerals are used throughout the drawings to represent the same or similar elements of the embodiments, and among them:

[0023] Figure 1 is a schematic perspective view of an automatic tray feeding device according to an exemplary embodiment of the present application;

[0024] Figure 2 is a schematic perspective view of a lifting mechanism according to an exemplary embodiment of the present application;

[0025] Figure 3 is a side view of a lifting mechanism according to an exemplary embodiment of the present application;

[0026] Figure 4 is a schematic perspective view of a telescopic tray mechanism according to an exemplary embodiment of the present application;

[0027] Figure 5 is a partial schematic perspective view of a conveying mechanism according to an exemplary embodiment of the present application;

[0028] Figure 6 is a partial top view of an automatic tray feeding device according to an exemplary embodiment of the present application;

[0029] Figure 7 is a schematic perspective view of a tray translation mechanism according to an exemplary embodiment of the present application;

[0030] Figure 8 is a schematic perspective view of another tray translation mechanism according to an exemplary embodiment of the present application;

[0031] Figure 9 is a side view of another tray translation mechanism according to an exemplary embodiment of the present application;

[0032] Figure 10 A partial schematic perspective view of a security inspection system of an automatic pallet feeding device according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0033] Hereinafter, the present application will be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the present application are shown. However, the present application can be implemented in different embodiments and should not be construed as being limited to the embodiments described herein. The embodiments provided herein are intended to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art. In the accompanying drawings, the thickness and area of ​​the layers may be magnified for clarity. Throughout the specification, the same reference numerals are used to represent the same elements. For different embodiments, the elements may have different relationships and different positions.

[0034] To address various issues with tray provision in the prior art, this application provides a novel automatic tray supply device that can be used in automated carry-on baggage screening systems in various locations, such as airports, train stations, and other locations requiring security. This automatic tray supply device automatically transfers empty trays located at the bottom of the sorting table. A lifting mechanism transports the empty trays to the top of the integrated table. Passengers no longer need to search for trays; they can simply place their luggage onto the trays at the sorting table and proceed to security screening.

[0035] Figure 1 : is a schematic perspective view of an automatic tray feeding device according to an exemplary embodiment of the present application. Figure 1As shown, the automatic pallet supply device 1 includes: at least one conveying mechanism 10, which conveys pallets 80 at different heights; at least one lifting mechanism 20, which is used to move the pallet 80 on the conveying mechanism 10 at a first height to the conveying mechanism 10 at a second height, wherein the first height is different from the second height; and an organizing table frame 30, which is used to carry the at least one conveying mechanism 10 and the at least one lifting mechanism 20.

[0036] Specifically, the automatic tray supply device 1 may include a sorting table frame 30 or be installed on the sorting table frame 30. Security personnel can check passengers' luggage on the sorting table 90. The sorting table 90 can also be installed on the sorting table frame 30. All components related to the automatic tray supply device can be installed on the sorting table frame 30, such as a conveying mechanism 10, a lifting mechanism 20, etc. The sorting table frame 30 can also be provided with a security inspection mechanism to integrate the entire security inspection system. The sorting table frame 30 can be constructed of aluminum profiles and stainless steel sheet metal. The conveying mechanism 10 can include conveying mechanisms located at two different heights, such as an upper conveying mechanism and a lower conveying mechanism. The upper conveying structure can be flush with the top of the sorting table frame 30, or slightly lower than the sorting table frame 30. The lifting mechanism 20 transports the empty trays on the lower layer to the top of the sorting table frame 30 to facilitate passengers to load their carry-on luggage.

[0037] In another embodiment of the present application, the automatic tray supply device 1 may include at least one retractable tray mechanism 40. The retractable tray mechanism 40 may be mounted on the top of the sorting platform frame 30. When the retractable tray mechanism 40 is retracted, the lifting mechanism 20 raises the tray 80 located on the conveyor mechanism 10 at the first or second height to the top of the sorting platform frame 30. Specifically, the retractable tray mechanism 40 may be mounted on the top of the sorting platform frame 30, allowing the lifting mechanism 20 to transport empty trays from the bottom conveyor mechanism to the top of the sorting platform frame 30. As shown in the figure, the retractable tray mechanism is mounted on the top of the sorting platform 90. When the retractable tray mechanism is retracted (opened), an opening is opened. Empty trays mounted on the lifting mechanism 20 can pass through the opening and rise above the top of the sorting platform frame 30, facilitating the loading of carry-on luggage by passengers. Passengers can then push the trays loaded with carry-on luggage into the upper conveyor mechanism, thereby facilitating automated security checks.

[0038] Figure 2 is a schematic perspective view of a lifting mechanism according to an exemplary embodiment of the present application; Figure 3 : is a side view of a lifting mechanism according to an exemplary embodiment of the present application. Figure 2 and Figure 3As shown, the lifting mechanism 20 includes a linear guide rail 21, a synchronous belt 22, a support plate 23 and at least one limit member 24. The support plate 23 can move up and down through the linear guide rail 21 and the synchronous belt 22, and the movement range of the support plate 23 is limited by the at least one limit member 24.

[0039] Specifically, the synchronous belt 22 of the lifting mechanism 20 can be installed on the linear guide rail 21, and the support plate 23 can be connected to the synchronous belt 22 through a connector. The motor 25 provides power to the synchronous belt 22, so that the support plate 23 can move up and down along the linear guide rail 21 under the drive of the motor 25. A limit member 24 can also be set on the linear guide rail 21, and a limit member 24 can be set at the upper end and the lower end of the linear guide rail 21. In this embodiment, multiple support plates 23 can be set. Figure 2 Two are shown in the figure, so that more pallets can be transported. When multiple pallets 23 are provided, the distance between two pallets 23 is greater than or equal to the sum of the length of the pallet 23 and the height of the pallet 80. The length of the pallet 23 is not limited in this application, as long as it can stably support the pallet 80.

[0040] In this embodiment, the support plate 23 may be configured to be foldable or to be able to rotate 90 degrees around one side of the support plate 23. Figure 2 and Figure 3 As shown, when the pallet 23 is transporting the pallet 80, it can be placed horizontally. After the pallet 80 is removed, that is, after the pallet 23 reaches its highest position, it can be rotated to a vertical position. The pallet 23 folds and begins to descend. After reaching the lowest point, the folded pallet 23 unfolds to lift the new empty pallet on the bottom conveying mechanism 10. Alternatively, in another embodiment, the pallet 23 can be set in a folded state and only set horizontally. When the pallet 80 needs to be placed, the pallet 23 can be unfolded from the folded state to a horizontal state. When the pallet 80 is removed, the pallet 23 can return to the folded state. When the pallet 23 is in a folded state, the distance between the pallets 23 can be shortened and more pallets can be transported, thereby further improving work efficiency.

[0041] Figure 4 is a schematic perspective view of a telescopic support mechanism according to an exemplary embodiment of the present application, as shown in FIG. Figure 4As shown, in this embodiment, one or more telescopic pallet mechanisms 40 may be provided on the top of the sorting table frame 30, and may include a pair of guide rails 41, at least one pulley 42, and at least one flexible plate 43. Each flexible plate 43 is provided with pulleys 42 on both sides. As shown, one pulley 42 is provided at each of the two ends on the side of the flexible plate 43 to move in the guide rail 41, thereby driving the flexible plate 43 to move, so that the opening and closing (extension and contraction) of the flexible plates 43 relative to each other can be achieved. When the flexible plates 43 move away from each other (contract), the telescopic pallet mechanism 40 opens, and an opening appears between the flexible plates 43. The tray 80 can be lifted above the sorting table frame 30 through this opening; when the flexible plates 43 move towards each other (extend), the telescopic pallet mechanism 40 closes, and the opening between the flexible plates 43 no longer exists.

[0042] In this embodiment, a pair of guide rails 41 are arranged facing each other in the sorting table frame 30. The flexible plate 43 is located between the pair of guide rails 41. The guide rails 41 are similar to the shape of "冂" when viewed from the front. Each flexible plate 43 can be bent about 90 degrees under the cooperation of the guide rail 41 and the pulley 42.

[0043] Figure 5 is a partial schematic perspective view of the conveying mechanism according to an exemplary embodiment of the present application, as Figure 5 shown, the conveying mechanism 10 may include a motorized drum 11, a driven drum 12, and a conveyor belt 13 mounted on the sorting table frame 30. The motorized drum 11 and the driven drum 12 are connected by the conveyor belt 13, and the motorized drum 11 is driven by a motor (not shown). Thus, the driven drum 12 can also achieve a rotational movement under the drive of the motorized drum 11. The present application does not limit the number of motorized drums and driven drums. In one embodiment, one motorized drum 11 can drive 7 driven drums 12 to move through the conveyor belt 13.

[0044] In other embodiments, the conveying mechanism in the embodiments of the present application can be realized by the existing conveyor rollers in the existing mechanism, or can be realized by the existing conveyor belts in the existing mechanism. The present application does not limit this.

[0045] Figure 6: is a partial top view of the automatic tray feeding device according to an exemplary embodiment of the present application. As shown in the figure, a plurality of photoelectric detection devices 50 can be set on the sorting table frame 30 to sense the position of the tray 80. For example, three photoelectric detection devices 50 such as photoelectric switches can be installed on the top of the sorting table frame 30, wherein two photoelectric switches can be located between the conveying rollers and the distance between them is less than the length of the tray 80, and the other photoelectric switch can be closer to the tray 80. The three photoelectric switches are used to detect whether the tray 80 has left the sorting position. When the tray 80 has left, the lifting mechanism 20 can continue to move, and the next tray 80 continues to rise. For example, when the three photoelectric switches shown in the figure are all blocked, and a photoelectric switch close to the tray 80 is first blocked and then unblocked, it can be determined that the tray 80 has left the sorting table.

[0046] In addition, a photoelectric switch can also be set in the sorting table frame 30. When the tray 80 is lifted to a certain position, such as 200 mm high, by the lifting mechanism 20, the next tray 80 is allowed to enter the bottom support plate 23 of the lifting mechanism 20 at the bottom conveying mechanism 10 with the help of detection by the photoelectric switch for use.

[0047] Return Figure 1 In addition to conveyor mechanisms 10 located at different heights, the automatic tray supply system 1 can also include a conveyor mechanism 10 and a tray translation mechanism 60 located at the same height. Having two conveyor mechanisms 10 at the same height allows both security personnel and passengers to access the trays simultaneously, improving the efficiency of the automatic tray supply system. The tray translation mechanism 60 can be mounted on the conveyor mechanism 10 located on the bottom level, allowing trays 80 to be transported from the bottom level to the upper level conveyor mechanism for easy access by passengers, eliminating the need for passengers to bend over to retrieve them.

[0048] Figure 7 : is a schematic perspective view of a tray translation mechanism according to an exemplary embodiment of the present application. Figure 7As shown, in this embodiment, a pallet translation mechanism 60 includes at least two synchronous pulleys 61, a transmission roller 62, and at least two toggle members 63. In other embodiments, the number of synchronous pulleys can be three or more, thereby ensuring more stable pallet movement. The synchronous pulley 61 can be mounted on the conveyor mechanism 10, specifically, positioned in the gap between the motorized roller 11 and the driven roller 12. The synchronous pulley 61 can also include two synchronous belts and multiple rollers to support the movement of the synchronous belts. The transmission roller 62 can be connected to the synchronous pulley 61 via the rollers, thereby driving the synchronous pulley 61. The transmission roller 62 can be driven by a motor. One or more toggle members 63 can be attached to a synchronous belt by bonding or other means to push the pallet 80 located on the synchronous belt onto the support plate 23 of the lifting mechanism 20. Alternatively, the toggle members can be mounted on the synchronous belt or formed integrally with the synchronous belt. The synchronous belt is arranged along the longitudinal direction of the electric drum 11. When the tray 80 moves onto the synchronous belt, the tray 80 originally moving on the electric drum 11 can change its direction of movement via the synchronous belt, for example, changing its forward direction to a direction perpendicular to its forward direction, thereby moving the tray 80 from one conveyor mechanism 10 to another conveyor mechanism 10 at the same height. This application does not impose any restrictions on the shape, height, or number of the toggle members 63, as long as they can move the tray 80. As shown in the figure, a toggle member 63 is provided on each synchronous belt, and the toggle member 63 is similar to a block.

[0049] Figure 8 is a schematic perspective view of another tray translation mechanism according to an exemplary embodiment of the present application. Figure 9 is a side view of another tray translation mechanism according to an exemplary embodiment of the present application. For clarity, Figure 9 The roller conveying mechanism is not shown. Figure 8 and Figure 9As shown, in this embodiment, the pallet translation mechanism 70 includes a roller conveying mechanism 71, a lifting mechanism 72 and a moving mechanism 73. Among them, the roller conveying mechanism 71 may include an electric roller 711, a driven roller 712 and a belt 713. The electric roller 711 drives the belt 713 and the driven roller 712 to rotate, thereby pushing the pallet to move along the forward direction. The lifting mechanism 72 includes an electric roller 721, a driven roller 722, a cam 723, a belt 724 and a frame 725. The rotation of the electric roller 721 drives the cam 723 to rotate, so that the moving mechanism 73 set on the cam 723 can be lifted according to the cam 723, and the pallet leaves the roller conveying mechanism 71. The moving mechanism 73 includes an electric roller 731, a belt 732, a supporting roller 733 supporting the belt 732 and a translation frame 734. The electric roller 731 rotates, driving the belt 732 to move, thereby driving the translation frame 734 to move laterally with the pallet. The moving mechanism 73 is located between the rollers of the roller conveying mechanism 71. As shown Figure 9 As shown, the translation frame 734 can be installed on the frame 725 of the lifting mechanism 72, and the support wheel 733 can be set to the translation frame 724.

[0050] In one embodiment, the distance between the electric roller 11 and the adjacent driven roller 12 is 100 mm, or the distance between the electric roller 11 and the adjacent electric roller 11 is 100 mm, so that a pallet translation mechanism 60 can be set therein, more specifically, a synchronous belt and a moving mechanism can be set.

[0051] Figure 10 A partial schematic perspective view of a security inspection system of an automatic tray feeding device according to an exemplary embodiment of the present application, as shown in FIG. Figure 10 As shown, the automatic tray supply device 1 in the above embodiment can be used for the tray sorting table 90 and then for the baggage security inspection system, so that empty trays can be automatically supplied to the sorting table 90, thereby reducing the situation where passengers have to look for trays and providing more convenient services. In addition, it can also avoid the action of passengers bending over to pick up the trays, bringing more thoughtful services to passengers.

[0052] The operation of the automatic tray feeding device 1 will be described below with reference to the accompanying drawings. Figure 1-9As shown, after an empty tray is transferred from the bottom conveyor mechanism 10 to the location of the lifting device, the support plate 23 of the lifting mechanism 20 supports the tray 80 and lifts the tray 80 to a position above the lowest position. The two flexible plates 43 at the top of the sorting table move away from each other, thereby opening the top window. When the tray 80 rises to the highest position, the two opposing flexible plates 43 remain separated from each other, and the tray 80 is placed on the support plate. At this time, the passenger can begin to sort their luggage. When the passenger moves the tray 80 to the upper conveyor mechanism, the support plate of the lifting mechanism 20 begins to fold. After folding, the lifting mechanism 20 descends to the position defined by the lower limit member 24, and the folded support plate is opened, and the above steps of lifting the tray 80 are repeated.

[0053] In another embodiment, when the tray rises to the highest position, the two opposite flexible plates 43 move relative to each other to close the window, and the tray can be placed on the telescopic support plate mechanism 40, thereby supporting the tray more stably.

[0054] although Figures 1 to 10 Specific embodiments of the automatic tray feeding device are shown and described, but those skilled in the art will understand that the scenarios discussed herein may be replaced by other components capable of achieving the same functionality. The terms used herein are for illustrative purposes only and should not be construed as limiting the meaning or scope of the present application. As used in this specification, unless the context clearly indicates a specific example, the singular form may include the plural form. Moreover, the expressions "include" and / or "comprise" used in this specification do not limit the shapes, numbers, steps, actions, operations, components, elements, and / or groups thereof mentioned, nor do they exclude the presence or addition of one or more other different shapes, numbers, steps, operations, components, elements, and / or groups thereof, or the addition of these. For ease of description, spatially relative terms such as "on," "above," "upper," "under," "below," "below," and "lower" are used herein to describe the relationship between one element or feature and another element (element) or feature (feature) as shown in the figures. It should be understood that, in addition to the orientations illustrated in the figures, spatially relative terms are intended to include different orientations of the device (e.g., package) in use or operation. For example, if the device in the figures is turned over, elements described as below, beneath, or under other elements or features would then be oriented above or over the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below.

[0055] As used herein, terms such as "first," "second," etc., are used to describe various components, assemblies, regions, layers, and / or parts. However, it is apparent that components, assemblies, regions, layers, and / or parts should not be limited by these terms. These terms are merely used to distinguish one component, assembly, region, layer, or part from another component, assembly, region, layer, or part. Thus, a description of a first component, assembly, region, layer, or part may also refer to a second component, assembly, region, layer, or part without departing from the scope of this application.

[0056] The above description of the exemplary embodiments of the present application is presented only for the purpose of illustration and description, and is not intended to be exhaustive or to limit the application to the precise form disclosed. In accordance with the above teachings, many modifications and variations are possible. The embodiments are selected and described in order to explain the principles of the present disclosure and its practical application, so that other persons skilled in the art can utilize the present disclosure and the various embodiments, and have various modifications suitable for the specific purposes contemplated. Without departing from the spirit and scope of the present disclosure, alternative embodiments will become apparent to those skilled in the art to which the present disclosure belongs. Therefore, the scope of the present disclosure is limited by the appended claims rather than by the foregoing description and the exemplary embodiments described therein.

Claims

1. An automatic tray feeding device, comprising: At least one conveying mechanism for conveying pallets at different heights; at least one lifting mechanism for moving a pallet on the conveying mechanism at a first height to the conveying mechanism at a second height, the first height being different from the second height; a tidying table frame, used for carrying the at least one conveying mechanism and the at least one lifting mechanism; At least one telescopic support plate mechanism is mounted on the top of the tidying table frame, the telescopic support plate mechanism includes a pair of flexible plates arranged opposite to each other, the flexible plates are separated relative to each other to form an opening, the tray can pass through the opening, the flexible plates can move relative to each other to form a plane, and the tray can be placed on the telescopic support plate mechanism, The automatic tray supply device further comprises a tray translation mechanism, wherein the tray translation mechanism is mounted on the conveying mechanism and is capable of changing the direction of the tray moving along the conveying mechanism so as to move the tray in a direction perpendicular to the conveying mechanism.

2. The automatic tray feeding device according to claim 1, wherein: The automatic tray feeding device further comprises at least one photoelectric detection device installed on the sorting table frame to sense the position of the tray.

3. The automatic tray supply device according to claim 2, wherein: The pallet translation mechanism includes a synchronous pulley, a transmission roller and a toggle member, wherein the transmission roller drives the synchronous pulley to rotate, and the toggle member is located on the synchronous belt to push the pallet to move.

4. The automatic tray supply device according to claim 2, wherein: The pallet translation mechanism includes a roller conveying mechanism, a lifting mechanism and a moving mechanism, wherein a cam in the lifting mechanism lifts the moving mechanism so that the pallet leaves the roller conveying mechanism and is laterally moved by the moving mechanism.

5. The automatic tray supply device according to claim 1, wherein: The lifting mechanism lifts the tray on the conveying mechanism at the first height or the second height to the top of the sorting table frame when the telescopic support plate mechanism is retracted.

6. The automatic tray supply device according to claim 1, wherein: The lifting mechanism includes a driving motor, a linear guide rail, a synchronous belt, a support plate and at least one limiting member, wherein the support plate moves up and down through the linear guide rail and the synchronous belt, and the movement range of the support plate is limited by the at least one limiting member.

7. The automatic tray supply device according to claim 6, wherein: The tray can be folded or rotated 90 degrees around one side of the tray.

8. The automatic tray supply device according to claim 1, wherein: The telescopic support plate mechanism further includes a pair of guide rails and at least one pulley sliding in the pair of guide rails, wherein the at least one pulley is mounted on the at least one flexible plate.

9. The automatic tray supply device according to claim 8, wherein: The pair of guide rails face each other and are in a U-shape, and the flexible plate can be bent 90 degrees.

10. The automatic tray supply device according to claim 1, wherein: The at least one conveying mechanism includes at least one electric roller, a plurality of driven rollers and at least one transmission belt. The at least one electric roller drives the plurality of driven rollers to move via the at least one transmission belt.

11. The automatic tray supply device according to claim 10, wherein: The synchronous pulley or moving mechanism of the pallet translation mechanism is located between the electric roller and the adjacent driven roller.

12. A pallet arranging table comprising the automatic pallet supply device according to any one of claims 1 to 11.

13. A baggage security inspection system, comprising the automatic tray supply device according to any one of claims 1 to 11.

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