CN210102703U

CN210102703U - Tray sorting equipment

Info

Publication number: CN210102703U
Application number: CN201822149415.1U
Authority: CN
Inventors: 朱元
Original assignee: Shanghai Wishing Information Technology Center
Current assignee: Shanghai Wishing Information Technology Center
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-02-21
Anticipated expiration: 2028-12-19

Abstract

The utility model provides a tray sorting device, which comprises an annular walking track and a plurality of gravity type tray trolleys which can move on the annular walking track, wherein the gravity type tray trolleys are connected together end to end through a rotating connecting shaft; and a horizontal friction plate is arranged on the inner side of each gravity type tray trolley, which is close to the annular walking track, and at least one driving component for providing power to the horizontal friction plate to drive the gravity type tray trolley to move along the annular walking track is fixedly connected to the inner side of the annular walking track. The gravity tray trolley moves in a friction driving mode, and automatically adjusts the position relation between the horizontal friction plate and the upper and lower rollers by adopting the structural design of the connecting frame, the pin shaft and the connecting plate; by optimally designing the synchronous limiting assemblies on the gravity type tray trolley, the overall stress of each connecting point between the connecting rods is more uniform.

Description

Tray sorting equipment

Technical Field

The utility model belongs to the technical field of the article letter sorting, concretely relates to tray letter sorting equipment.

Background

In recent years, along with the development of domestic electronic commerce, the sorting amount of commodities such as express packages, shoes, clothes and books is exponentially increased, the personnel cost is increased year by year, so that the use of automatic equipment for sorting instead of manual sorting is inevitable, the automatic sorting equipment is mainly applied to sorting centers of postal express packages, e-commerce, shoes, clothes, books, medicines and the like, articles are placed in a sorting tray in an automatic or manual mode, and the sorting tray conveys the articles to a specified position for automatic sorting.

The existing tray sorting vehicle generally adopts a rubber chain driving mode to drive the tray to move, the driving mode needs a large wheel disc with the diameter of nearly 2 meters for driving, the cost is high, the construction difficulty is high, the design is inflexible, and much inconvenience is caused for the use and maintenance of the subsequent equipment; in addition, the synchronous mechanism that opens and shuts of current letter sorting tray adopts linear bearing combined mechanism, and this kind of synchronizing mechanism is complicated, and the effect is relatively poor, easily breaks down and leads to the tray to open and shut smoothly, and the cost is with high costs moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tray letter sorting equipment to overcome above-mentioned technical problem.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a tray sorting device comprises an annular walking track and a plurality of gravity type tray trolleys, wherein the gravity type tray trolleys are connected together through a rotating connecting shaft; a horizontal friction plate is arranged on the inner side, close to the annular walking track, of each gravity type tray trolley, and at least one driving assembly for providing power for the horizontal friction plate is fixedly connected to the inner side of the annular walking track; the driving assembly comprises a connecting frame fixedly connected to the inner side of the annular walking track, a pin shaft fixedly connected to the connecting frame, a connecting plate movably connected with the pin shaft, an upper roller connected to the connecting plate through a first adjusting screw, a lower roller connected to the connecting plate through a second adjusting screw, and a speed reduction motor fixedly connected to the connecting plate and connected with the lower roller, wherein the upper roller and the lower roller are respectively located above and below the friction plate and clamp the friction plate to enable the gravity type tray trolley to move.

Further, every gravity type tray dolly includes that two tray groups that set up side by side and rigid coupling together, be located every tray group outside and be used for assembling the installing support of tray group, connect the removal pulley in every installing support below, every tray group is including setting up two trays in installing support one side by side, and two trays are respectively through two axis of rotation swing joint that are parallel to each other on the installing support, swing joint is synchronous spacing subassembly between two axis of rotation, every be connected with the locking Assembly who is used for locking synchronous spacing subassembly on the bottom surface of installing support.

Furthermore, synchronous spacing subassembly includes two torsion bar arms that perpendicular rigid coupling just swing joint respectively in two axis of rotation with two trays, be located the intermediate position of two torsion bar arms and connect the connecting axle on the installing support, swing joint just can follow connecting axle pivoted rotor plate on the connecting axle, and head rod and second connecting rod, the one end of head rod with the rotor plate is articulated, and the other end is articulated with one of them torsion bar arm, the one end of second connecting rod with the rotor plate is articulated, and the other end is articulated with another torsion bar arm.

Further, when the two trays are in the horizontal position, the hinge point a of the first connecting rod and the corresponding torsion bar arm, the hinge point B of the second connecting rod and the corresponding torsion bar arm, and the hinge point C of the first connecting rod and the rotating plate are located on the same horizontal plane and located above the connecting point D of the connecting shaft and the rotating plate, the hinge point E of the second connecting rod and the rotating plate is located below the connecting point D, the distance from the connecting point D to the hinge point C is equal to the distance from the connecting point to the hinge point E, and the connecting point D, the hinge point C, and the hinge point E are arranged in an isosceles triangle shape.

Furthermore, the locking assembly comprises a rotating shaft vertically connected to the bottom surface of the mounting bracket downwards, a shifting rod connected with the rotating shaft and used for clamping the synchronous limiting assembly, and a torsion spring arranged on the rotating shaft and connected with the shifting rod.

Furthermore, the deflector rod is of a Z-shaped structure and comprises a first rod piece extending towards the outer side of the mounting bracket, a second rod piece connected with the first rod piece and forming a certain angle with each other, and a third rod piece connected with the second rod piece and forming a certain angle with each other, wherein the third rod piece is integrally formed, and the rotating shaft is connected at the intersection position of the first rod piece and the second rod piece.

Furthermore, a discharging area and a resetting area are arranged below the annular walking track, a plurality of unlocking assemblies which are used for being in contact with the locking assemblies to unlock the limit of the locking assemblies on the synchronous limiting assemblies are connected to two sides of the discharging area of the annular walking track, and a resetting assembly used for restoring the two trays from the vertical state to the horizontal state is fixedly connected to the lower portion of the resetting area of the annular walking track.

Furthermore, the unlocking assembly comprises a fixed plate fixedly connected to the side edge of the annular walking track, a swing rod connected to the fixed plate, a balance wheel connected to the top end of the swing rod and used for being in contact with the locking assembly, and an air cylinder connected to the fixed plate, wherein the movable end of the air cylinder is connected to the swing rod, and the fixed end of the air cylinder is in triangular distribution with the connecting point of the fixed plate, the movable end of the air cylinder with the connecting point of the swing rod, and the connecting point of the swing rod with the fixed plate.

Further, reset assembly is including connecting the piece that resets in one of them tray bottom of two trays and connecting the board that resets that is the slope setting in the annular walking track, the tray is under vertical state the piece contact that resets board makes can make the piece that resets upwards make gradually along the board that resets the tray resumes to the horizontality.

Has the advantages that:

1. the gravity type tray trolley moves in a friction driving mode, and the synchronous limiting assembly on the gravity type tray trolley is optimally designed, so that the overall stress of each connecting point between the connecting rods is more uniform, the abrasion of a stress part can be reduced to the minimum, the failure probability of the synchronous limiting assembly is reduced, and the service life of the gravity type tray trolley is prolonged;

2. the utility model discloses in drive assembly upper and lower gyro wheel pass through the connecting plate and rotate and connect on the link, namely the connecting plate can drive upper and lower gyro wheel and rotate along the round pin axle, because of the individuality difference that gravity type tray dolly exists, there is certain difference in height between the horizontal friction plate that connects on gravity type tray dolly, and the utility model discloses the structural design of link, round pin axle and connecting plate that adopts can automatically adjust the position relation between horizontal friction plate and upper and lower gyro wheel higher or lower than, has not only solved higher or lower horizontal friction plate because of the deformation that leads to by the oppression of upper and lower gyro wheel, effectively reduces the installation requirement between gravity type tray dolly and the horizontal friction plate moreover;

3. in the utility model, the unlocking component is set to give a certain acting force to the locking component, so that the locking of the locking component to the synchronous limiting component is unlocked, the movement direction of the balance wheel and the movement track of the shift lever in the unlocking component are both horizontal rotation, and the blocking phenomenon which possibly occurs when the movement tracks of the balance wheel and the shift lever are different is avoided;

4. the utility model discloses in through the reset assembly who sets up will unload the tray group automatic recovery of completion to original condition, place the material on next step to the operation circulates in proper order.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention in fig. 1;

fig. 3 is a schematic structural diagram of the driving assembly of the present invention;

fig. 4 is a side view of fig. 3 according to the present invention;

fig. 5 is a schematic structural view of the middle gravity type pallet truck of the present invention;

fig. 6 is a schematic structural view of the synchronous limiting assembly of the present invention;

FIG. 7 is a schematic structural view of a shift lever of the utility model;

fig. 8 is a schematic structural view of the opening lock assembly of the present invention;

fig. 9 is a schematic structural view of the reduction assembly of the present invention;

in the figure: 10. an annular traveling track; 20. a gravity tray trolley; 21. a tray group; 211. a tray; 212. a tray; 22. mounting a bracket; 23. a movable pulley; 24. a synchronous limit component; 241. a torsion bar arm; 242. a connecting shaft; 243. a rotating plate; 244. a first connecting rod; 245. a second connecting rod; 25. a rotating shaft; 26. a locking assembly; 261. a rotating shaft; 262. a deflector rod; 261-1, a first rod; 262-2, a second rod; 261-3, a third rod; 263. a torsion spring; 30. rotating the connecting shaft; 40. a horizontal friction plate; 50. a drive assembly; 51. a reduction motor; 52. a connecting frame; 53. a pin shaft; 54. a connecting plate; 55. a first adjusting screw; 56. an upper roller; 57. a lower roller; 60. an unlocking assembly; 61. a fixing plate; 62. a swing rod; 63. a balance wheel; 64. a cylinder; 70. A reset assembly; 71. a reset block; 72. a reset plate.

Detailed Description

In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the device or structure referred to must have a particular orientation and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and 2, the tray sorting apparatus of the present invention is used for fast conveying and sorting of materials such as express packages, and includes an annular traveling rail 10, a gravity tray cart 20, a rotating connecting shaft 30, a horizontal friction plate 40, a driving assembly 50, an unlocking assembly 60, and a resetting assembly 70; the gravity type tray trolley is characterized in that materials to be sorted are arranged on the gravity type tray trolley, the gravity type tray trolley is provided with a plurality of gravity type tray trolleys, and the gravity type tray trolleys are connected end to end through the rotating connecting shafts, so that the gravity type tray trolleys can move along the annular walking track simultaneously.

As shown in fig. 1 and 2, the circular traveling rail includes an outer circular rail and an inner circular rail which are parallel to each other, as shown in fig. 5, the tray cart includes two tray sets and mounting brackets which are located at the outer side of each tray set and used for assembling the tray sets, one of the mounting brackets is located above the outer circular rail, the other mounting bracket is located above the inner circular rail, the two mounting brackets are both connected with a movable pulley which can enable the gravity type tray cart to move on the circular traveling rail, and meanwhile, a horizontal wheel is connected below the mounting brackets.

As shown in fig. 5, the horizontal friction plate is installed on one side of each gravity type tray trolley close to the inner side annular rail, as shown in fig. 1 and 3, at least one driving component 50 for providing power to the horizontal friction plate to drive the gravity type tray trolley to move along the annular traveling rail is fixedly connected to the inner side annular rail, as shown in fig. 3 and 4, the driving component includes a connecting frame fixedly connected to the inner side of the annular traveling rail, a pin shaft is fixedly connected to the connecting frame, one end of the pin shaft is movably connected with a connecting plate capable of rotating along the pin shaft, the upper side of the connecting plate is connected with an upper roller through a first adjusting screw, the lower side of the connecting plate is connected with a lower roller through a second adjusting screw, the other side of the connecting plate relative to the lower roller is connected with a speed reduction motor, and the speed reduction motor is connected with the lower roller to drive the lower roller to rotate the, the upper roller and the lower roller are respectively positioned above and below the horizontal friction plate and clamp the horizontal friction plate so as to enable the gravity type tray trolley to move along the annular walking track, wherein the first adjusting screw is used for adjusting the pressure of the upper roller on the horizontal friction plate, and the second adjusting screw is used for adjusting the pressure of the lower roller on the horizontal friction plate, so that the friction force is provided for the horizontal friction plate through the combined action of the lower roller and the upper roller, and the gravity type tray trolley is enabled to move on the annular walking track; the connecting plate drives the upper and lower rollers to rotate along the pin shaft so as to automatically adjust the position relation between the higher or lower horizontal friction plate and the upper and lower rollers, and the problem that the higher or lower horizontal friction plate is deformed due to the compression of the upper and lower rollers is solved; meanwhile, a pressure spring structure is connected between the connecting frame and the connecting plate simultaneously to eliminate lateral pressure caused by the weight of the speed reducing motor in the rotating process of the connecting plate along the pin shaft, so that the connecting plate normally rotates along the pin shaft. Further preferably, the vertical distance between the axis of the pin shaft and the upper roller and the vertical distance between the axis of the pin shaft and the lower roller are preferably equal to each other, so that the influence of component force generated in the vertical direction on automatic adjustment is solved through the structural optimization in the automatic adjustment process of the horizontal friction plate which is higher or lower.

As shown in fig. 5, the two tray sets are arranged side by side and fixedly connected together, and each tray set comprises two trays arranged side by side on one side of a mounting bracket, the two trays are movably connected to the mounting bracket through two parallel rotating shafts, respectively, a synchronous limiting component for limiting the turning of the two trays is movably connected between the two rotating shafts on the two rotating shafts, as shown in fig. 5 and 6, the synchronous limiting component comprises two torsion bar arms respectively connected to the two rotating shafts, a connecting shaft is connected to the mounting bracket at the middle position of the two torsion bar arms, a rotating plate capable of rotating along the connecting shaft is movably connected to the connecting shaft, the synchronous limiting component further comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the rotating plate, and the other end of the first connecting rod is hinged with one of the two torsion bar arms, one end of the second connecting rod is hinged with the rotating plate, and the other end of the second connecting rod is hinged with the other torsion bar arm.

As shown in fig. 6, when the tray sets are all in a horizontal position, the hinge point a of the first connecting rod and the corresponding torsion bar arm, the hinge point B of the second connecting rod and the corresponding torsion bar arm, and the hinge point C of the first connecting rod and the rotating plate are in a same horizontal plane, i.e. the two torsion bar arms are arranged in parallel and will rotate synchronously with the two tray sets, and the hinge point a, the hinge point B, and the hinge point C are all located on the upper side of the connecting point D of the connecting shaft and the rotating plate, and the hinge point E of the second connecting rod and the rotating plate is located on the lower side of the connecting point D, further, the distance from the connecting point D to the hinge point C is equal to the distance from the connecting point to the hinge point E, and the connecting point D, the hinge point C, and the hinge point E are arranged in an isosceles, the above design makes the hinge point A, the hinge point B, the hinge point C and the hinge point E in triangular distribution when in horizontal position, and the design forms the structure as shown in FIG. 6, so that the position distribution of the hinge point A, the hinge point B, the hinge point C, the connection point D and the hinge point E is more reasonable, when the torsion bar arm rotates synchronously with the tray, the hinge point A and the hinge point B are stressed simultaneously, the lengths of the first connection rod and the second connection rod are preferably the same or approximately the same, the hinge point C and the hinge point E receive the acting force respectively transmitted by the first connection rod and the second connection rod simultaneously, as the isosceles triangle is formed among the hinge point C, the hinge point E and the connection point D, three points on the rotation plate are stressed uniformly, the design is analyzed from the physical mechanics angle, the position distribution is beneficial to the synchronous rotation of the two trays, the abrasion of a stressed part is reduced to the lowest, the failure probability of the synchronous limiting component is reduced, and the service life of the gravity type tray trolley is prolonged; the utility model discloses well two torque rod arms need be and the tray is connected perpendicularly, just can reach foretell atress effect, if two torque rod arms in the arm with what adopt between the tray is horizontal connection or has certain angle slope to connect, will lead to the length of two connecting rods to differ, arrange comparatively chaotic between each tie point, the atress is inhomogeneous, the connecting rod that leads to both sides has a certain time difference at the rotation in-process, makes the rotation of both sides tray not completely synchronous, and the tray dolly uses for a long time more, and the possibility that synchronous spacing subassembly broke down or block is dunked is higher.

When two tray upset vertical position, pin joint A, pin joint B are located same horizontal plane with pin joint E, and are located tie point D's upside, and pin joint C rotates to tie point D's downside this moment, and 4 pin joints and arranging of 1 tie point this moment are the same in the atress distribution when horizontal position, can make two trays at the in-process that resets, and the atress of 4 pin joints and 1 tie point is comparatively even. Generally, the structural design improves the synchronism of the back-and-forth rotation of the two trays between the horizontal position and the vertical position, and reduces the possible fault or blockage situation caused by uneven stress.

As shown in fig. 5-6, a locking assembly is fixedly connected to each of the two mounting brackets, the locking assembly is configured to lock the rotating plate in the synchronous limiting assembly, so that the rotating plate cannot rotate, thereby locking the two trays and keeping the tray group in a horizontal position, the locking assembly includes a rotating shaft vertically connected to the bottom surface of the mounting bracket downward, a shift lever vertically connected to the rotating shaft, and a torsion spring disposed on the rotating shaft and connected to the shift lever, when the tray group is in a horizontal position, a notch is disposed on the bottom surface of the rotating plate, the shift lever can be locked at the notch, thereby locking the rotating plate, preferably, the notch is disposed below the connecting point D, so that the notch, the hinge point C and the hinge point E are distributed in a triangular shape, and stability in locking is improved; as shown in fig. 7, the shift lever is preferably in a zigzag structure, and includes a first rod extending to the outside of the mounting bracket, a second rod connected to the first rod and forming a certain angle with each other, and a third rod connected to the second rod and forming a certain angle with each other, the third rod can be directly clamped on the notch, the first rod extends to the outside of the mounting bracket, and receives external pressure to rotate the shift lever along the rotating shaft, so as to release the locking of the locking assembly on the synchronous limit assembly; the rotating shaft is preferably connected to the intersection position of the first rod piece and the second rod piece.

As shown in fig. 1 and 9, a discharging area and a resetting area are arranged below the circular traveling track, wherein a part marked with a in fig. 1 is the discharging area, and a part marked with b in fig. 9 is the resetting area; as shown in fig. 8, in the discharging area, a plurality of unlocking assemblies 60 for giving a certain pressure to the locking assembly so that the locking assembly contacts and limits the synchronous limit assembly are connected to the inner annular track and the outer annular track, the unlocking assembly comprises an L-shaped fixed plate 61 fixedly connected on the annular traveling track, a side plate of the L-shaped fixed plate is fixedly connected on the annular traveling track, a top plate of the L-shaped fixed plate is connected with a swing rod 62, the top end of the swing rod is connected with a balance wheel 63 for applying pressure to the shift rod, meanwhile, the top plate is connected with an air cylinder 64, the fixed end of the air cylinder is connected with the top plate, the movable end of the air cylinder is connected with the swing rod, preferably, the connecting point of the fixed end of the air cylinder and the top plate, the connecting point of the movable end of the air cylinder and the swing rod and the connecting point of the swing rod and the top plate are distributed in a triangular shape; as shown in fig. 9, in the reset area, a reset component 70 for restoring the vertical state of the discharged tray to the horizontal state of the loaded tray is fixedly connected to the lower side of the circular walking track, the reset component includes a reset block 71 connected to the bottom of one of the two trays and a reset plate 72 connected to the inside of the circular walking track and obliquely arranged, the tray is in the vertical state, the reset block contacts the reset plate, the reset block drives the tray to gradually move upwards along the reset plate, so that the tray is restored to the horizontal state, and the tray is automatically locked by the locking component when being restored to the horizontal state.

The utility model is operated according to the following steps, materials are placed on the tray set, the driving assembly is started, the gravity type tray trolley is driven to move on the annular walking track through the horizontal friction plate, so that all the gravity type tray trolleys on the annular walking track move under the action of the rotating connecting shaft, and the tray of the gravity type tray trolley is in a horizontal state under the action of the synchronous limiting assembly and the locking assembly in the transportation process of the gravity type tray trolley; when the gravity type pallet truck moves to an unloading area, the unlocking assembly is started, the limitation of the locking assembly on the synchronous limiting assembly is removed, so that two pallets on the gravity type pallet truck can rotate from a horizontal state to a vertical state under the action of gravity, materials on the pallet set fall into the unloading area, and when the gravity type pallet truck which finishes unloading moves to a reset area, the reset assembly enables the two pallets of the gravity type pallet truck to gradually return to the horizontal state and then be locked through the locking assembly; and repeating the steps to finish the refining of the next material, and circulating in sequence.

In order to make the purpose, technical solution and advantages of the present invention more concise and clear, the present invention is described with the above embodiments, which are only used for describing the present invention, and can not be understood as a limitation to the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The tray sorting equipment is characterized by comprising an annular walking track (10) and a plurality of gravity type tray trolleys (20), wherein the gravity type tray trolleys are connected together through a rotating connecting shaft (30); a horizontal friction plate (40) is arranged on the inner side, close to the annular walking track, of each gravity type tray trolley, and at least one driving assembly (50) for providing power for the horizontal friction plate is fixedly connected to the inner side of the annular walking track; the driving assembly comprises a connecting frame (52) fixedly connected to the inner side of the annular walking track, a pin shaft (53) fixedly connected to the connecting frame, a connecting plate (54) movably connected with the pin shaft, an upper roller (56) connected to the connecting plate through a first adjusting screw (55), a lower roller (57) connected to the connecting plate through a second adjusting screw, and a speed reduction motor (51) fixedly connected to the connecting plate and connected with the lower roller, wherein the upper roller and the lower roller are located above and below the friction plate respectively and clamp the friction plate to enable the gravity type tray trolley to move.

2. The tray sorting device according to claim 1, wherein each gravity tray trolley comprises two tray sets (21) which are arranged side by side and fixedly connected together, a mounting bracket (22) which is arranged outside each tray set and used for assembling the tray sets, and a moving pulley (23) which is connected below each mounting bracket, each tray set comprises two trays (211, 212) which are arranged side by side on one side of the mounting bracket, the two trays are movably connected on the mounting bracket respectively through two rotating shafts (25) which are parallel to each other, a synchronous limiting assembly (24) is movably connected between the two rotating shafts, and a locking assembly (26) which is used for locking the synchronous limiting assembly is connected on the bottom surface of each mounting bracket.

3. The tray sorting apparatus according to claim 2, wherein the synchronization limit assembly includes two torsion bar arms (241) vertically fixedly connected to the two trays, respectively, and movably connected to the two rotation shafts, respectively, a connecting shaft (242) located at a middle position of the two torsion bar arms and connected to the mounting bracket, a rotation plate (243) movably connected to the connecting shaft and rotatable along the connecting shaft, and a first connecting rod (244) and a second connecting rod (245), the first connecting rod having one end hinged to the rotation plate and the other end hinged to one of the torsion bar arms, the second connecting rod having one end hinged to the rotation plate and the other end hinged to the other torsion bar arm.

4. The tray sorting apparatus according to claim 3, wherein when the two trays are in the horizontal position, a hinge point A of the first connecting rod and the corresponding torsion bar arm, a hinge point B of the second connecting rod and the corresponding torsion bar arm, and a hinge point C of the first connecting rod and the rotating plate are in the same horizontal plane and are located on an upper side of a connection point D of the connecting shaft and the rotating plate, a hinge point E of the second connecting rod and the rotating plate is located on a lower side of the connection point D, a distance from the connection point D to the hinge point C is equal to a distance from the connection point E, and the connection point D, the hinge point C, and the hinge point E are arranged in an isosceles triangle shape.

5. The tray sorting apparatus according to claim 2, wherein the locking assembly includes a rotation shaft (261) vertically connected downward to a bottom surface of the mounting bracket, a shift lever (262) connected to the rotation shaft for locking the synchronizing block assembly, and a torsion spring (263) provided on the rotation shaft and connected to the shift lever.

6. The tray sorting apparatus according to claim 5, wherein the lever has a zigzag structure including a first rod (262-1) extended to an outside of the mounting bracket, a second rod (262-2) connected to the first rod and forming an angle with each other, and a third rod (262-3) connected to the second rod and forming an angle with each other, the rotary shaft being connected at an intersection of the first rod and the second rod.

7. The tray sorting apparatus according to claim 2, wherein a discharging area and a returning area are provided below the endless traveling rail, a plurality of unlocking assemblies (60) for contacting the locking assemblies to release the locking assemblies from the locking of the synchronizing block assembly are connected to both sides of the discharging area portion of the endless traveling rail, and a returning assembly (70) for returning the two trays from the vertical state to the horizontal state is fixedly connected below the portion of the endless traveling rail located in the returning area.

8. The tray sorting apparatus according to claim 7, wherein the unlocking assembly includes a fixed plate (61) fixedly attached to a side of the endless traveling rail, a swing lever (62) coupled to the fixed plate, a balance (63) coupled to a top end of the swing lever for contacting the locking assembly, and a cylinder (64) coupled to the fixed plate, a movable end of the cylinder being coupled to the swing lever, and a connection point of a fixed end of the cylinder to the fixed plate, a connection point of a movable end of the cylinder to the swing lever, and a connection point of the swing lever to the fixed plate being triangularly distributed.

9. The tray sorting apparatus according to claim 7, wherein the reset unit includes a reset block (71) connected to a bottom of one of the two trays, and a reset plate (72) connected to the endless traveling track in an inclined arrangement, and the tray contacts the reset plate in a vertical state so that the reset block gradually moves upward along the reset plate to restore the tray to a horizontal state.