Tray stacking equipment

Abstract

The utility model belongs to the technical field of tray loading and stacking, and discloses a tray stacking device, the tray stacking device is provided with a conveying position, an empty tray waiting position and a tray loading position, the conveying position and the empty tray waiting position can stack trays in the vertical direction, the tray stacking device comprises a rack, a conveying mechanism and a tray loading mechanism, and when tray loading and stacking operation needs to be conducted, the conveying mechanism is used for conveying the trays to the empty tray waiting position. Stacked trays can be conveyed to the conveying position through logistics vehicles such as a forklift or an AGV, then the conveying mechanism conveys the trays stacked on the conveying position to the empty tray waiting position, the tray located at the uppermost portion of the empty tray waiting position is conveyed to the tray loading position, and after the trays located at the tray loading position are loaded through the tray loading mechanism, the trays are conveyed to the empty tray waiting position through the tray loading mechanism. The trays located at the tray loading position are conveyed to the conveying position through the conveying mechanism, then the trays located at the empty tray waiting position are conveyed and loaded one by one, and the trays are stacked on the conveying position, so that automatic tray loading and stacking are completed, and the trays do not need to be carried manually.

Description

TECHNICAL FIELD

[0001] The utility model relates to tray packing and stacking technical field, especially tray stacking equipment. BACKGROUND

[0002] Empty trays are usually placed in a top-down stacking manner, and when used, the materials are loaded into the empty trays, and the trays filled with materials are transported to the next process by a forklift or AGV (Automated Guided Vehicle).

[0003] The current tray packing and stacking is usually completed by manual carrying, specifically, empty trays are manually carried one by one to a tray packing station, and after packing by a machine or manually, the trays are carried to a forklift or AGV. The problem is that the tray packing efficiency is low, and when manually carrying the full trays, the trays are prone to tilting or falling during the carrying process, resulting in material loss. UTILITY MODEL CONTENT

[0004] According to one aspect of the utility model, the utility model provides tray stacking equipment to solve the problem of low tray packing efficiency in the prior art and material loss when manually carrying full trays, which is prone to tilting or falling during the carrying process.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The tray stacking equipment is provided with a conveying position, an empty tray standby position, and a tray packing position, and the conveying position and the empty tray standby position can stack trays in a vertical direction; the tray stacking equipment comprises:

[0007] a rack;

[0008] a conveying mechanism arranged in the rack, which can convey the trays stacked in the conveying position to the empty tray standby position, and can also convey the uppermost tray in the empty tray standby position to the tray packing position;

[0009] a tray packing mechanism arranged in the rack and used for packing the trays in the tray packing position; the conveying mechanism can also convey the trays in the tray packing position to the conveying position.

[0010] As a preferred solution of the tray stacking equipment, an intermediate position is further provided; the conveying mechanism comprises a stacking conveying module and a conveyor belt, the stacking conveying module can convey the uppermost tray in the empty tray standby position to the intermediate position, and the conveyor belt can convey the tray in the intermediate position to the tray packing position in a first direction, and the first direction is parallel to the horizontal plane.

[0011] As a preferred solution of the stacking device, the tray has a support surface; the stacking conveying module comprises:

[0012] A movable bracket capable of moving in a first direction relative to the rack;

[0013] A robot mounting seat capable of moving in a vertical direction relative to the movable bracket;

[0014] A carrying robot capable of extending or retracting relative to the robot mounting seat, when the carrying robot extends relative to the robot mounting seat, the carrying robot is located below the support surface and supports the support surface, when the carrying robot retracts relative to the robot mounting seat, the carrying robot is always separated from the support surface.

[0015] As a preferred solution of the stacking device, the tray has two support surfaces, respectively located on both sides of the tray in a second direction, the first direction, the second direction and the vertical direction are perpendicular to each other; the stacking conveying module is provided with two, the carrying robot of the two stacking conveying modules can correspondingly support the two support surfaces.

[0016] As a preferred solution of the stacking device, the stacking conveying module further comprises a first stacking conveying module driving member, a second stacking conveying module driving member and a third stacking conveying module driving member, the first stacking conveying module driving member is used to drive the movable bracket to move in the first direction relative to the rack, the second stacking conveying module driving member is used to drive the robot mounting seat to move in the vertical direction relative to the movable bracket, and the third stacking conveying module driving member is used to drive the carrying robot to extend or retract relative to the robot mounting seat.

[0017] As a preferred solution of the stacking device, it further comprises a positioning mechanism, the positioning mechanism comprises two positioning side plates arranged in parallel and spaced apart and a positioning end plate located between the two positioning side plates, the ends of the two positioning side plates away from the positioning end plate form a gap, the gap is configured for the logistics vehicle to enter and exit, the logistics vehicle can move between the two positioning side plates and abut against the positioning end plate to convey the tray to the conveying position.

[0018] As a preferred solution of the stacking device, the positioning side plate away from the positioning end plate is provided with a guide surface, and the distance between the two guide surfaces gradually decreases in the direction close to the positioning end plate.

[0019] As a preferred solution of the stacking device, it further comprises a support plate provided on the rack, the support plate can support the trays stacked in the vertical direction, and the empty tray standby position is located on the support plate.

[0020] As a preferred solution of the stacker device, a tray loading mechanism base is arranged in the rack, and a tray loading mechanism is arranged in the tray loading mechanism base in a vertical direction, and a tray loading mechanism driver is arranged to drive the tray loading mechanism to slide.

[0021] As a preferred solution of the stacker device, the tray loading mechanism base is arranged in the rack in a first direction, and a base driver is arranged to drive the tray loading mechanism base to slide.

[0022] The beneficial effects of the present application are as follows:

[0023] The present application provides a stacker device, which is provided with a conveying position, a tray waiting position, and a tray loading position. The conveying position and the tray waiting position can stack trays in a vertical direction. The stacker device comprises a rack, a conveying mechanism, and a tray loading mechanism. The conveying mechanism is arranged in the rack, and can convey the trays stacked in the conveying position to the tray waiting position, and can also convey the uppermost tray in the tray waiting position to the tray loading position. The tray loading mechanism is arranged in the rack, and is used to load the tray in the tray loading position. The conveying mechanism can also convey the tray in the tray loading position to the conveying position. When loading and stacking operations are required, the stacked trays can be conveyed to the conveying position by a forklift or an AGV logistics vehicle. Then, the conveying mechanism conveys the stacked trays in the conveying position to the tray waiting position, and conveys the uppermost tray in the tray waiting position to the tray loading position. After the tray loading mechanism loads the tray in the tray loading position, the conveying mechanism conveys the tray in the tray loading position to the conveying position, and then conveys and loads the trays in the tray waiting position one by one, and stacks them in the conveying position, so as to complete the automatic loading and stacking, without manual tray carrying. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a first structural schematic diagram of the stacker device in the embodiment of the present application;

[0025] Figure 2 is Figure 1 is an enlarged view of G in FIG. 1;

[0026] Figure 3 is Figure 1 is an enlarged view of H in FIG. 1;

[0027] Figure 4 is a second structural schematic diagram of the stacker device in the embodiment of the present application;

[0028] Figure 5 is a third structural schematic diagram of the stacker device in the embodiment of the present application;

[0029] Figure 6 is Figure 5Enlarged view of the middle I.

[0030] In the figure:

[0031] 100, conveying position; 200, empty tray waiting position; 210, intermediate position; 300, tray loading position; 400, tray; 401, carrying groove; 500, logistics vehicle;

[0032] 1, frame; 11, first slide rail; 12, fourth slide rail;

[0033] 2, stacking and conveying module; 21, movable support; 211, second slide rail; 22, mechanical hand mounting seat; 221, third slide rail; 23, carrying mechanical hand;

[0034] 3, conveying belt; 31, stopper;

[0035] 4, tray loading mechanism; 41, tray loading mechanism base; 411, fifth slide rail; 42, tray loading mechanism driving piece;

[0036] 5, positioning mechanism; 51, positioning side plate; 511, guide surface; 52, positioning end plate; 53, notch;

[0037] 6, support plate. DETAILED DESCRIPTION

[0038] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0039] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface" of second feature includes that first feature is directly above and obliquely above second feature, or only indicates that horizontal height of first feature is higher than second feature. First feature "under", "below" and "under surface" of second feature includes that first feature is directly below and obliquely below second feature, or only indicates that horizontal height of first feature is less than second feature.

[0041] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0042] The empty tray is usually placed in a stacked manner, and when used, the material is loaded into the empty tray, and the tray filled with material is transported to the next process by a forklift or AGV. The current tray loading and stacking is usually completed by manual carrying, specifically, the empty tray is carried to the tray loading station one by one by manual, and after loading by machine or manually, the tray is carried to the forklift or AGV. The problem is that the tray loading efficiency is low, and when the full tray is manually carried, the tray is prone to tilt or fall during the carrying process, resulting in material loss.

[0043] In view of the above problems, the embodiment provides a tray stacking device to solve the problems of low tray loading efficiency in the prior art and prone to tilt or fall of the tray during manual carrying of the full tray, resulting in material loss, which can be used in the technical field of tray loading and stacking.

[0044] Reference Figures 1-6The stacking device is provided with a conveying position 100, an empty tray waiting position 200 and a tray loading position 300. The conveying position 100 and the empty tray waiting position 200 can stack the trays 400 in the vertical direction. The stacking device comprises a rack, a conveying mechanism and a tray loading mechanism 4. The conveying mechanism is arranged on the rack 1 and can convey the stacked trays 400 on the conveying position 100 to the empty tray waiting position 200 and can also convey the uppermost tray 400 on the empty tray waiting position 200 to the tray loading position 300. The tray loading mechanism 4 is arranged on the rack 1 and is used for loading the trays 400 on the tray loading position 300. The conveying mechanism can also convey the trays 400 on the tray loading position 300 to the conveying position 100. When the tray loading and stacking operations are needed, the stacked trays 400 can be conveyed to the conveying position 100 by a forklift or an AGV logistics vehicle 500. Then the conveying mechanism conveys the stacked trays 400 on the conveying position 100 to the empty tray waiting position 200 and conveys the uppermost tray 400 on the empty tray waiting position 200 to the tray loading position 300. After the trays 400 on the tray loading position 300 are loaded by the tray loading mechanism 4, the conveying mechanism conveys the trays 400 on the tray loading position 300 to the conveying position 100. Then the conveying and loading of the trays 400 on the empty tray waiting position 200 are carried out one by one and the trays 400 are stacked on the conveying position 100, so that the automatic tray loading and stacking are completed without manual tray carrying.

[0045] With reference to the foregoing Figures 1-6 , the stacking device is also provided with an intermediate position 210. The conveying mechanism comprises a stacking conveying module 2 and a conveying belt 3. The stacking conveying module 2 can convey the uppermost tray 400 on the empty tray waiting position 200 to the intermediate position 210. The conveying belt 3 can convey the tray 400 on the intermediate position 210 to the tray loading position 300 in a first direction, so that the tray 400 can be conveyed from the empty tray waiting position 200 to the tray loading position 300 by the cooperation of the stacking conveying module 2 and the conveying belt 3. The conveying belt 3 can be driven by a motor. The first direction is the AB direction in Figure 1 、 Figure 4 and Figure 5 . The vertical direction is the EF direction in Figure 1 、 Figure 4 and Figure 5 .

[0046] Optionally, the rack 1 is also fixedly provided with a stopper 31 located at one end of the conveying belt 3 close to the tray loading position 300. When the tray 400 abuts against the stopper 31, the tray 400 moves to the tray loading position 300, so that the movement of the tray 400 can be limited by the stopper 31 and the tray 400 can just move to the tray loading position 300 without over-movement.

[0047] Since the conveying belt 3 can only convey the tray 400 in the first direction, and the tray 400 needs to be displaced in the vertical direction in addition to the displacement in the first direction during the process of being conveyed from the empty tray waiting station 200 to the tray loading station 300, the stack conveying module 2 needs to be capable of conveying the tray 400 in the horizontal direction and also needs to be capable of conveying the tray 400 in the vertical direction. Specifically, the stack conveying module 2 comprises a movable support 21, a mechanical hand mounting seat 22, and a carrying mechanical hand 23, the movable support 21 is capable of moving relative to the rack 1 in the first direction; the mechanical hand mounting seat 22 is capable of moving relative to the movable support 21 in the vertical direction; the carrying mechanical hand 23 is capable of extending or retracting relative to the mechanical hand mounting seat 22, the tray 400 has a support surface, specifically, the tray 400 has a carrying groove 401, and the support surface is the upper surface of the carrying groove 401. When the carrying mechanical hand 23 extends relative to the mechanical hand mounting seat 22, the carrying mechanical hand 23 is located below the support surface and supports the support surface, at this time, the carrying mechanical hand 23 can be controlled to carry or put down the tray 400 by controlling the movable support 21 to move relative to the rack 1 in the first direction and controlling the mechanical hand mounting seat 22 to move relative to the movable support 21 in the vertical direction. When the carrying mechanical hand 23 retracts relative to the mechanical hand mounting seat 22, the carrying mechanical hand 23 is always separated from the support surface, at this time, the carrying mechanical hand 23 no longer carries the tray 400, and the positions of the movable support 21 and the mechanical hand mounting seat 22 can be adjusted. In addition, since the carrying mechanical hand 23 is used to carry the tray 400 in cooperation with the support surface of the tray 400, the carrying mechanical hand 23 can only carry the uppermost tray 400, or can cooperate with the support surfaces of the trays 400 below to carry multiple trays 400 at the same time.

[0048] With reference back to Figures 1-6 , the tray 400 has two support surfaces, the two support surfaces are respectively located on both sides of the tray 400 in the second direction, the first direction, the second direction, and the vertical direction are perpendicular to each other; the stack conveying module 2 is provided with two, the carrying mechanical hands 23 of the two stack conveying modules 2 can one-to-one support the two support surfaces, thereby improving the stability of the support. Among them, the second direction is the CD direction in Figure 1 、 Figure 4 and Figure 5 .

[0049] With reference back to Figures 1-6The stack conveying module 2 further comprises a first stack conveying module driving member for driving the movable support 21 to move along the first direction relative to the rack 1, a second stack conveying module driving member for driving the robot mounting seat 22 to move along the vertical direction relative to the movable support 21, and a third stack conveying module driving member for driving the carrying robot 23 to extend or retract relative to the robot mounting seat 22. In the embodiment, the first, second and third stack conveying module driving members are linear driving mechanisms such as air cylinders, hydraulic cylinders or electric cylinders.

[0050] Optionally, the rack 1 is provided with a first sliding rail 11 extending along the first direction, and the movable support 21 is slidingly arranged on the first sliding rail 11. The movable support 21 is provided with a second sliding rail 211 extending along the vertical direction, and the robot mounting seat 22 is slidingly arranged on the second sliding rail 211. The robot mounting seat 22 is provided with a third sliding rail 221 extending along the second direction, and the carrying robot 23 is slidingly arranged on the third sliding rail 221.

[0051] Continuing to refer to Figures 1-6 The stack tray device further comprises a positioning mechanism 5, which comprises two positioning side plates 51 arranged in parallel and at intervals and a positioning end plate 52 located between the two positioning side plates 51. In the embodiment, the two positioning side plates 51 are arranged at intervals along the second direction, and the positioning end plate 52 is arranged parallel to the second direction. The ends of the two positioning side plates 51 away from the positioning end plate 52 form a gap 53, which is configured for the logistics vehicle 500 to enter and exit. The logistics vehicle 500 can move between the two positioning side plates 51 and abut against the positioning end plate 52 to convey the tray 400 to the conveying position 100, so that the tray 400 can be carried by the logistics vehicle 500 from other equipment to the stack tray device, or the tray 400 completed with tray stacking by the stack tray device can be carried to other equipment. Specifically, the logistics vehicle 500 is a forklift or an AGV.

[0052] Continuing to refer to Figures 1-6 The end of the positioning side plate 51 away from the positioning end plate 52 is provided with a guide surface 511. In the direction approaching the positioning end plate 52, the distance between the two guide surfaces 511 gradually decreases, thereby providing a guiding effect for the logistics vehicle 500, so that the logistics vehicle 500 can smoothly pass through the gap 53 and enter between the two positioning side plates 51. The guide surface 511 is a bevel or a circular arc surface.

[0053] Continuing to refer to Figures 1-6 The stack tray device further comprises a support plate 6 arranged on the rack 1, which can support the trays 400 stacked along the vertical direction. The empty tray standby position 200 is located on the support plate 6, and the tray 400 can be temporarily supported on the support plate 6 before tray stacking.

[0054] With reference to the above Figures 1-6 , the stacking device further comprises a tray loading mechanism base 41 and a tray loading mechanism driving member 42, the tray loading mechanism 4 is slidingly arranged on the tray loading mechanism base 41 in the vertical direction, and the tray loading mechanism driving member 42 is used to drive the tray loading mechanism 4 to slide, so that the tray loading mechanism 4 moves in the vertical direction to approach the tray 400 to perform the filling operation, or moves away from the tray 400 to avoid interference with the action of the subsequent stacking and conveying module 2. Specifically, the tray loading mechanism 4 can be a gripper, a suction cup or the like, which can grasp or suck the material and convey the material to the tray 400. Alternatively, the tray loading mechanism 4 is a material nozzle for spraying granular material. In addition, in order to avoid interference with the stacking and conveying module 2, the tray loading mechanism base 41, the tray loading mechanism driving member 42 and the tray loading mechanism 4 are all located above the tray loading position 300, and the stacking and conveying module 2 is arranged below the tray loading mechanism base 41.

[0055] With reference to the above Figures 1-6 , the tray loading mechanism base 41 is slidingly arranged on the rack 1 in the first direction, and the stacking device further comprises a base driving member, which is used to drive the tray loading mechanism base 41 to slide, so as to change the position of the tray loading mechanism base 41 in the first direction, and further adjust the position of the tray loading mechanism 4 in the first direction.

[0056] Optionally, the rack 1 is provided with a fourth sliding rail 12 extending in the first direction, and the tray loading mechanism base 41 is slidingly arranged on the fourth sliding rail 12; the tray loading mechanism base 41 is provided with a fifth sliding rail 411 extending in the vertical direction, and the tray loading mechanism 4 is slidingly arranged on the fifth sliding rail 411.

[0057] The working process of the stacking device in the embodiment will be introduced as follows: Figures 1-6

[0058] ​Firstly, the pallets 400 are carried to the two positioning side plates 51 by a forklift or an AGV logistics vehicle 500, so as to transport the pallets 400 to the conveying position 100, wherein the pallets 400 are multiple, and the multiple pallets 400 are stacked in the vertical direction. Then, the movable support 21 and the manipulator mounting base 22 are driven by the first stacking conveying module driving member and the second stacking conveying module driving member respectively, so that the carrying manipulator 23 is opposite to the carrying groove 401 of the lowermost pallet 400. The carrying manipulator 23 is driven by the third stacking conveying module driving member to extend into the carrying groove 401 relative to the manipulator mounting base 22. Then, the movable support 21 and the manipulator mounting base 22 are driven by the first stacking conveying module driving member and the second stacking conveying module driving member respectively, so that the carrying manipulator 23 supports the support surface and carries all the pallets 400. Then, the pallets 400 are placed on the support plate 6, so that the pallets 400 are located at the empty tray standby position 200.

[0059] Then, the uppermost pallet 400 at the empty tray standby position 200 is carried to the intermediate position 210 by the stacking conveying module 2 again. The pallet 400 is conveyed by the conveying belt 3 in the first direction until the pallet 400 abuts against the stop member 31, at this time, the pallet 400 is located at the tray loading position 300.

[0060] The tray loading mechanism base 41 and the tray loading mechanism 4 are driven by the base driving member and the tray loading mechanism driving member 42 respectively, so that the tray loading mechanism 4 is close to the pallet 400 and fills the material. After the filling is completed, the tray loading mechanism base 41 and the tray loading mechanism 4 are driven by the base driving member and the tray loading mechanism driving member 42 respectively, so as to reset. Then, the pallet 400 at the tray loading position 300 is carried to the conveying position 100 by the stacking conveying module 2 again, that is, carried to the logistics vehicle 500. The pallets 400 at the empty tray standby position 200 are loaded one by one, and stacked on the logistics vehicle 500, so that the loading and stacking of all the pallets 400 are completed.

[0061] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A stacker apparatus, characterized by, The device comprises a conveying position (100), an empty tray waiting position (200) and a tray loading position (300), the conveying position (100) and the empty tray waiting position (200) can stack trays (400) in the vertical direction; the device comprises: a rack (1); a conveying mechanism arranged on the rack (1), which can convey the tray (400) stacked on the conveying position (100) to the empty tray waiting position (200), and can also convey the tray (400) located at the top of the empty tray waiting position (200) to the tray loading position (300); a tray loading mechanism (4) arranged on the rack (1) and used for loading the tray (400) located at the tray loading position (300); the conveying mechanism can also convey the tray (400) located at the tray loading position (300) to the conveying position (100).

2. The tray stacking apparatus of claim 1, wherein, An intermediate position (210) is also provided; the conveying mechanism comprises a stacking conveying module (2) and a conveying belt (3), the stacking conveying module (2) can convey the tray (400) located at the top of the empty tray waiting position (200) to the intermediate position (210), and the conveying belt (3) can convey the tray (400) located at the intermediate position (210) to the tray loading position (300) in a first direction, which is parallel to the horizontal plane.

3. The tray stacking apparatus of claim 2, wherein, The tray (400) has a support surface; the stacking conveying module (2) comprises: a movable support (21) capable of moving in a first direction relative to the rack (1); a robot mounting seat (22) capable of moving in a vertical direction relative to the movable support (21); a carrying robot (23) capable of extending or retracting relative to the robot mounting seat (22), when the carrying robot (23) extends relative to the robot mounting seat (22), the carrying robot (23) is located below the support surface and supports the support surface, when the carrying robot (23) retracts relative to the robot mounting seat (22), the carrying robot (23) is always separated from the support surface.

4. The tray stacking apparatus of claim 3, wherein, The tray (400) has two support surfaces, which are respectively located on both sides of the tray (400) in a second direction, the first direction, the second direction and the vertical direction are perpendicular to each other; the stacking conveying module (2) is provided with two, the carrying robots (23) of the two stacking conveying modules (2) can one-to-one support the two support surfaces.

5. The tray stacking apparatus of claim 3, wherein, The stacking conveying module (2) further comprises a first stacking conveying module driving member for driving the movable support (21) to move in a first direction relative to the rack (1), a second stacking conveying module driving member for driving the mechanical hand mounting base (22) to move in a vertical direction relative to the movable support (21), and a third stacking conveying module driving member for driving the carrying mechanical hand (23) to extend or retract relative to the mechanical hand mounting base (22).

6. The tray stacking apparatus according to any one of claims 1 to 5, characterized in that, Further comprising a positioning mechanism (5), the positioning mechanism (5) comprises two positioning side plates (51) arranged in parallel and at intervals, and a positioning end plate (52) located between the two positioning side plates (51), the ends of the two positioning side plates (51) away from the positioning end plate (52) form a gap (53), the gap (53) is configured for the logistics vehicle (500) to enter and exit, the logistics vehicle (500) can move between the two positioning side plates (51) and abut against the positioning end plate (52) to deliver the tray (400) to the conveying position (100).

7. The tray stacking apparatus of claim 6, wherein, The positioning side plate (51) is provided with a guide surface (511) at the end away from the positioning end plate (52), and the distance between the two guide surfaces (511) gradually decreases in the direction close to the positioning end plate (52).

8. The tray stacking apparatus according to any one of claims 1 to 5, characterized in that, Further comprising a support plate (6) provided on the rack (1), the support plate (6) can support the trays (400) stacked in a vertical direction, and the empty tray standby position (200) is located on the support plate (6).

9. The tray stacking apparatus according to any one of claims 1 to 5, characterized in that, Further comprising a tray loading mechanism base (41) and a tray loading mechanism driving member (42) provided on the rack (1), the tray loading mechanism (4) is slidingly arranged on the tray loading mechanism base (41) in a vertical direction, and the tray loading mechanism driving member (42) is used to drive the tray loading mechanism (4) to slide.

10. The tray stacking apparatus of claim 9, wherein, The tray loading mechanism base (41) is slidingly arranged on the rack (1) in a first direction, and the tray stacking device further comprises a base driving member for driving the tray loading mechanism base (41) to slide. The tray loading mechanism base (41) is slidingly arranged on the rack (1) in a first direction, and the tray stacking device further comprises a base driving member, the base driving member is used to drive the tray loading mechanism base (41) to slide.

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