Container stacking device

Abstract

The invention relates to a container stacking device. The container stacking device comprises a feeding conveying line, a disc, a restraining assembly and a stacking output line. According to the device, a circular structure of a disc is utilized, traditional vertical path stacking is converted into arc path stacking, so that containers can be stacked in the non-vertical direction, and the stacking height or number is not limited by the height of a rack any more. The disc is compact in structure and small in occupied space, and the equipment size is greatly reduced. Constraining or releasing of the container is achieved through cyclic movement of the restraining assembly, the requirement for the freedom degree of the driving structure is low, and equipment cost can be reduced easily.

Description

Technical Field

[0001] The present application belongs to the technical field of stacking devices, and in particular relates to a high-speed container stacking device. Background Art

[0002] Currently, disc-shaped containers are separated into pallets at high speed using a spiral cutter or linkage mechanism, and then transported to the printing equipment via belts or chains for printing. After this process is completed, the flat-flowing disc-shaped containers need to be stacked for transfer to the next process.

[0003] The stacking equipment currently used by various manufacturers is mainly divided into the following two types:

[0004] 1. Relying on the gravity of the disc-shaped containers, they are stacked one by one through vertical or inclined silos. For example, in the Chinese patent application number CN202323399294, the lunch boxes are transported through a conveyor line and fall into the appropriate cavity by gravity. The boxes are moved up and down and left and right through linear modules to achieve the stacking effect.

[0005] 2. Use a single or multi-degree-of-freedom manipulator to grasp and stack individually or multiple times; for example, in the Chinese patent application number CN201922037635, the lunch box is transferred to the appropriate cavity through the action of a connecting rod to complete the stacking.

[0006] The technical route of the above invention has the following problems: since the stacked products are relatively light, gravity cannot guarantee the posture of the products when they fall, resulting in mutual interference between the products during stacking, and it is impossible to achieve a reliable effect; stacking is achieved by transplanting with a robot, but this method is limited by the efficiency of the robot and cannot achieve high-speed operation. In addition, this mechanism also has problems such as high cost and large space occupation.

[0007] In addition, the stacking height of the above two stacking methods is limited by the height of the rack, so the stacking quantity of a single pile of products is relatively limited. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a high-speed container stacking device in order to solve at least one problem of the above-mentioned disc-shaped container stacking equipment in the prior art.

[0009] The technical solution adopted by the present invention to solve its technical problem is:

[0010] A container stacking device, comprising:

[0011] Feed conveyor line for conveying containers;

[0012] A disc, the disc being rotatable; a plurality of accommodating spaces arranged inside the disc along its rotation direction, wherein when the disc rotates, the accommodating spaces can sequentially dock with the unloading end of the feed conveyor line to receive the containers;

[0013] A restraining assembly comprising a plurality of telescopic members, wherein each of the accommodating spaces corresponds to at least one of the telescopic members;

[0014] a stacking output line for receiving and delivering the containers transported by the disc; when the disc rotates, the stacking output line can sequentially dock with the accommodating spaces to receive the containers released by the disc;

[0015] When any of the accommodating spaces rotates to a position where it docks with the unloading end of the feed conveyor line, the corresponding telescopic member can extend toward the interior of the disc to constrain the container received by the accommodating space. When any of the accommodating spaces rotates to a position where it docks with the stacking output line, the corresponding telescopic member can be at least partially retracted from the interior of the disc to release the container.

[0016] In an optional embodiment, the container stacking device further includes:

[0017] A sensor, installed at the unloading end of the feeding conveyor line, for sensing whether the container is in place;

[0018] A driving mechanism, the driving mechanism being used to drive the disk to rotate; the driving mechanism being electrically connected to the sensor;

[0019] When the sensor senses that the container is in place, it can send an electrical signal to cause the driving mechanism to rotate a preset angle.

[0020] In an optional embodiment, the constraint assembly further includes: a guide rail, the two ends of which are respectively connected to the unloading end of the feed conveyor line and the feeding end of the stacking output line, the guide rail at least partially extends along the circumferential direction of the disc, and the surface of the guide rail is used to abut against the edge of the container in the accommodating space to limit it.

[0021] In an optional embodiment, the telescopic member is movably connected to the disc, and the telescopic member reaches at least a first position and a second position through movement; when the telescopic member is located at the first position, the telescopic member can abut against the container in the corresponding accommodating space, and when the telescopic member is located at the second position, the telescopic member is separated from the container in the corresponding accommodating space.

[0022] In an optional embodiment, the constraint component further includes:

[0023] A cylindrical end face cam, wherein the cylindrical end face cam is coaxially arranged with the disc;

[0024] an elastic member connected to the telescopic member, and configured to provide an elastic force for the telescopic member to move from the first position to the second position, or from the second position to the first position;

[0025] The end face of the cylindrical end face cam abuts against one side of the telescopic part. The end face of the cylindrical end face cam corresponds to the unloading end direction of the feeding conveyor line, and is provided with a raised area and a recessed area at a position corresponding to the feeding end direction of the stacking output line, so that the telescopic part can move under the squeezing action of the cylindrical end face cam.

[0026] In an optional embodiment, the constraint component further includes:

[0027] a rotating shaft, the rotating shaft being used for hingedly connecting one end of the telescopic member to the disc;

[0028] a fixed block fixed to the other end of the telescopic member and used for connecting the telescopic member to the elastic member;

[0029] Two ends of the elastic member respectively abut against one side of the disc and one side of the fixing block.

[0030] In an optional embodiment, one side of the fixing block has an opening for at least partially embedding the elastic member.

[0031] In an optional embodiment, the angle between the extending direction of the stacking output line and the horizontal plane is 1° to 30°.

[0032] In an optional embodiment, the container stacking device further includes a frame and a bracket, the frame extending along the transmission direction of the feed conveyor line, the disc being mounted on the frame via the bracket, and the disc being rotatably connected to the bracket via a main shaft.

[0033] In an optional embodiment, the disc includes a first disc surface and a second disc surface arranged in a direction perpendicular to the transmission direction of the feed conveyor line, and the accommodating space is formed between the first disc surface and the second disc surface;

[0034] The bracket includes a first support plate, a second support plate and a connecting rod, the first support plate and the second support plate are connected by the connecting rod; the first disk surface and the second disk surface are respectively connected to the first support plate and the second support plate, and the distance between the first support plate and the second support plate can be adjusted by adjusting the connecting rod.

[0035] The present invention has the following beneficial effects: utilizing the circular structure of the disc, traditional vertical stacking is transformed into curved stacking, enabling containers to be stacked in non-vertical directions, with the stacking height and quantity no longer restricted by rack height. Furthermore, the disc's compact structure occupies little space, significantly reducing the size of the equipment. Containers are restrained and released through the cyclical movement of the restraining assembly, requiring a low degree of freedom for the drive mechanism, thus reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The technical solution of the present application is further described below with reference to the accompanying drawings and embodiments.

[0037] Figure 1 This is a schematic structural diagram of a container stacking device according to an embodiment of the present application;

[0038] Figure 2 is a schematic diagram of a conveying path of a container stacking device according to an embodiment of the present application;

[0039] Figure 3 This is a front view of the disc structure of an embodiment of the present application;

[0040] Figure 4 yes Figure 3 AA section view;

[0041] Figure 5 yes Figure 4 Middle partial enlarged figure B;

[0042] Figure 6 yes Figure 4 Middle partial enlarged figure C;

[0043] Figure 7 This is a schematic diagram of the cylindrical end face cam structure of an embodiment of the present application;

[0044] Figure 8 This is a schematic diagram of the connection structure between the disc and the frame in an embodiment of the present application;

[0045] Figure 9 This is a schematic diagram of the contact position when the telescopic member drives the container in an embodiment of the present application.

[0046] The reference numerals in the figures are:

[0047] 1. Feeding conveying line;

[0048] 2. Rack;

[0049] 3. Constraint components;

[0050] 4. Driving mechanism;

[0051] 5. Stacking output line;

[0052] 6. Bracket;

[0053] 7. Disc; 71. First disc surface; 72. Second disc surface;

[0054] 8. Accommodation space;

[0055] 9. Elastic parts;

[0056] 10. Fixed block;

[0057] 11. Telescopic parts;

[0058] 12. Cam abutment portion;

[0059] 13. Cylindrical end face cam; 131. Raised area; 132. Concave area; 133. Slope surface;

[0060] 14. Rotating shaft;

[0061] 15. Spindle;

[0062] 16. Sensor;

[0063] 17. Container;

[0064] 18. Guide rails;

[0065] 19. Connecting rod. DETAILED DESCRIPTION

[0066] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0067] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0068] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0069] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0070] This embodiment provides a container stacking device, such as Figure 1-Figure 3 As shown, it includes: a feeding conveying line 1, a disc 7, a restraining component 3 and a stacking output line 5.

[0071] The feed conveyor line 1 is used to transport containers 17. The end of the feed conveyor line 1 that receives containers 17 from the previous process is the feed end, and the end that transfers containers 17 to the next process is the discharge end. The containers 17 described in this embodiment are containers with a certain width difference between their upper and lower ends. These containers can be stacked sequentially, with the lower end of the previous container 17 inserted through the upper end of the next container 17 and then inserted into the next container 17. This allows the combined thickness of the two stacked containers 17 to be significantly less than the sum of the thicknesses of the two individual containers 17. For example, common dinner plates, disposable lunch boxes, and industrial trays are all examples of products that can be used with the container stacking device of this embodiment.

[0072] like Figure 3-Figure 4 As shown, the disc 7 can rotate. Along the rotation direction of the disc 7, a number of accommodating spaces 8 are arranged inside the disc 7. When the disc 7 rotates, the accommodating spaces 8 can be docked with the discharge end of the feed conveyor line 1 in turn to receive the container 17, that is, the container 17 output from the discharge end of the feed conveyor line 1 will enter one of the accommodating spaces 8 of the disc 7.

[0073] like Figure 4-Figure 6 As shown, the restraint assembly 3 includes a plurality of telescopic members 11, which are arranged on both sides of the disc 7 along the rotation direction of the disc 7. Each receiving space 8 corresponds to at least one telescopic member 11, so that the container 17 received in any receiving space 8 can be restrained. It is understood that when the shape of the telescopic member 11 is designed to be highly compatible with the shape of the container 17, the telescopic member 11 can be arranged on only one side of the disc 7 along the rotation direction of the disc 7.

[0074] like Figure 1-Figure 2As shown, stacking output line 5 is used to receive and transport containers 17 conveyed by disk 7. As disk 7 rotates, stacking output line 5 can sequentially dock with accommodating spaces 8 to receive containers 17 released by disk 7. The end of stacking output line 5 that receives containers 17 provided by the previous process is called the feeding end, and the end that transfers containers 17 to the next process is called the unloading end.

[0075] When any accommodating space 8 rotates to the position of docking the unloading end of the feeding conveyor line 1, the corresponding telescopic part 11 can extend toward the inside of the disc 7 to constrain the container 17 received by the accommodating space 8. When any accommodating space 8 rotates to the position of docking the stacking output line 5, the corresponding telescopic part 11 can be at least partially retracted from the inside of the disc 7 to release the container 17.

[0076] The container stacking device of this embodiment utilizes the circular structure of disk 7 to transform traditional vertical stacking into curved stacking. This allows containers 17 to be stacked in non-vertical directions, freeing the height and quantity of the stack from being restricted by the height of the rack. Furthermore, disk 7 is compact and occupies little space, significantly reducing the size of the device. The cyclic movement of the restraining assembly 3 allows for the restraint and release of containers 17, requiring minimal degrees of freedom for the drive mechanism (neither linear modules nor manipulators are required), thus reducing device costs.

[0077] The container stacking device of this embodiment operates in the following steps and principles:

[0078] 1. After receiving the containers 17 delivered one by one from the previous process, the feeding end of the feeding conveyor line 1 sequentially transfers the containers 17 to the feeding end;

[0079] 2. The disc 7 rotates, causing an empty storage space 8 to dock with the discharge end of the feed conveyor line 1. After a container 17 enters the storage space 8, its corresponding telescopic member 11 can extend toward the inside of the disc 7 to restrain the container 17 therein. The disc 7 continues to rotate, causing the storage space 8 loaded with the container 17 to be transported to the feed end of the stacking output line 5. At the same time, the subsequent empty storage space 8 docks with the discharge end of the feed conveyor line 1 to prepare to receive the next container 17 delivered by the feed conveyor line 1.

[0080] 3. After the storage space 8 loaded with the container 17 reaches the feed end of the stacking output line 5, the telescopic member 11 corresponding to the storage space 8 can be at least partially retracted from the inside of the disc 7 to release the container 17. Then the disc 7 continues to rotate, so that the containers 17 loaded in the subsequent storage space 8 are stacked one by one on the rear end of the previous container 17 under constraint. In this process, each time the stacking output line 5 receives a container 17, it is transported a certain distance accordingly, such as Figure 2 As shown, the containers 17 are finally stacked to form stacks on the stacking discharge line 5 .

[0081] In an optional embodiment, the container stacking device further includes: a sensor 16 and a drive mechanism 4. The sensor 16 is installed at the unloading end of the feed conveyor line 1, and is used to sense whether the container 17 is in place; the drive mechanism 4 is used to drive the disc 7 to rotate; and the drive mechanism 4 is electrically connected to the sensor 16. When the sensor 16 senses that the container 17 is in place, it can send an electrical signal to rotate the drive mechanism 4 by a preset angle. It can be understood that the preset angle should be the angle difference between two adjacent accommodating spaces 8 on the disc 7. The preset angle can be customized according to the angle difference between all the accommodating spaces 8 on the disc 7; or all the accommodating spaces 8 can be designed to have a fixed angle difference, that is, the accommodating spaces 8 on the disc 7 are arranged equidistantly. In this embodiment, the setting of the sensor 16 can sense the unloading timing of the feed conveyor line 1, thereby quickly driving the disc 7 to rotate and improving the working efficiency.

[0082] In other embodiments, the sensor 16 may not be provided, and the operation of the driving mechanism 4 may be manually controlled by an operator.

[0083] In an optional embodiment, if Figure 2 As shown, the restraint assembly 3 further includes a guide rail 18, the ends of which respectively connect to the discharge end of the feed conveyor line 1 and the feed end of the stacking output line 5. The guide rail 18 extends at least partially along the circumference of the disc 7, and the surface of the guide rail 18 is used to abut against the edge of the container 17 in the accommodating space 8 to limit its position. In this embodiment, if the telescopic member 11 used has a simple structure and a smooth surface, it can cooperate with the surface of the guide rail 18 to abut against the edge of the container 17 to achieve accurate positioning of the container 17. If the telescopic member 11 used is highly compatible with the shape of the container 17, the guide rail 18 is not required.

[0084] In an optional embodiment, the telescopic member 11 is movably connected to the disc 7, and the telescopic member 11 can reach at least the first position and the second position through movement; Figure 4 、 Figure 6 As shown, when the telescopic member 11 is located at the first position, the telescopic member 11 can abut against the container 17 in the corresponding accommodation space 8, as shown in FIG. Figure 4 、 Figure 5 As shown, when the telescopic member 11 is in the second position, the telescopic member 11 is separated from the container 17 in the corresponding accommodating space 8. In this embodiment, the telescopic member 11 is movably connected to the disc 7, which can facilitate the movement of the telescopic member 11 into the interior of the disc 7, thereby reducing the complexity of the drive structure of the telescopic member 11. In other embodiments, the telescopic member 11 may not be connected to the disc 7, for example, it may have an independent drive.

[0085] In an optional embodiment, if Figure 5-Figure 7As shown, the constraint assembly 3 also includes: a cylindrical end face cam 13 and an elastic member 9. The cylindrical end face cam 13 is coaxially arranged with the disc 7; the elastic member 9 is connected to the telescopic member 11. The end face of the cylindrical end face cam 13 abuts against one side of the telescopic member 11, and the end face of the cylindrical end face cam 13 corresponds to the unloading end direction of the feeding conveyor line 1, and the position corresponding to the feeding end direction of the stacking output line 5 is provided with a raised area 131 and a recessed area 132, so that the telescopic member 11 can move under the squeezing action of the cylindrical end face cam 13. In this embodiment, through the joint action of the cylindrical end face cam 13 and the elastic member 9, the telescopic member 11 can be controllably extended and retracted at a specific position of the disc 7, with a simple structure and low drive requirements, which is conducive to reducing component costs. The options for the elastic member 9 include but are not limited to springs, tension springs, plastic parts or rubber bands.

[0086] In this embodiment, if the elastic member 9 provides an elastic force for the telescopic member 11 to move from the first position to the second position, the cylindrical end face cam 13 is designed to provide an extrusion force for the telescopic member 11 to move from the second position to the first position; conversely, if the elastic member 9 provides an elastic force for the telescopic member 11 to move from the second position to the first position, the cylindrical end face cam 13 is designed to provide an extrusion force for the telescopic member 11 to move from the first position to the second position.

[0087] Preferably, Figure 7 As shown, in order to make the variation of the extrusion force exerted by the raised area 131 and the recessed area 132 on the telescopic member 11 smoother, the cylindrical end face cam 13 further includes a slope 133 connecting the raised area 131 and the recessed area 132. Along the axial direction of the cylindrical end face cam 13, the height of the raised area 131 is greater than the height of the recessed area 132, and the slope 133 increases and then decreases from low to high along the axial direction of the cylindrical end face cam 13.

[0088] In an optional embodiment, if Figure 5 、 Figure 6 As shown, the telescopic member 11 includes a cam abutment portion 12, which protrudes from the main body of the telescopic member 11 and is used to abut against the surface of the cylindrical end face cam 13, so as to reduce the wear of the main body of the telescopic member 11 and improve the service life of the main body of the telescopic member 11.

[0089] In an optional embodiment, if Figure 5 、 Figure 6 As shown, the constraint assembly 3 further includes a rotating shaft 14 and a fixed block 10. The rotating shaft 14 is used to hinge one end of the telescopic member 11 to the disc 7; the fixed block 10 is fixed to the other end of the telescopic member 11, and is used to connect the telescopic member 11 to the elastic member 9; the two ends of the elastic member 9 respectively abut one side of the disc 7 and one side of the fixed block 10. In this embodiment, the provision of the rotating shaft 14 can improve the precision and stability of the movement of the telescopic member 11, and the provision of the fixed block 10 can facilitate the connection of the telescopic member 11, despite its simple structure, to the elastic member 9.

[0090] In an optional embodiment, the telescopic member 11 may be made of a blade-shaped sheet, such as Figure 9 As shown, when the containers 17 to be stacked have protruding edges, the telescopic member 11 can hook the protruding edges of the containers 17 so as to drive the containers 17 to rotate synchronously during the rotation of the disc 7 .

[0091] In an optional embodiment, if Figure 5 、 Figure 6 As shown, one side of the fixing block 10 has an opening for at least partially embedding the elastic member 9. In this embodiment, the opening can limit the elastic member 9 to a certain extent, preventing it from gradually deviating from the predetermined position during repeated expansion and contraction, thereby affecting the use effect.

[0092] In an optional embodiment, if Figure 2 As shown, the angle between the extending direction of the stacking output line 5 and the horizontal plane is 1° to 30°. In this embodiment, the extending direction of the stacking output line 5 is designed to have a certain slope. Its function is to cause the containers 17 located thereon to have a tendency to tilt in the direction opposite to the conveying direction of the stacking output line 5. Therefore, they can better overlap with the containers 17 dropped from the discharge end of the disc 7, which is conducive to a more compact stack.

[0093] In an optional embodiment, if Figure 1 、 Figure 3 As shown, the container stacking device further includes a frame 2 and a bracket 6. The frame 2 extends along the conveying direction of the feed conveyor line 1. A disc 7 is mounted on the frame 2 via the bracket 6. The disc 7 is rotatably connected to the bracket 6 via a spindle 15. In this embodiment, the provision of the bracket 6 facilitates the assembly and disassembly of the disc 7 and the adjustment of its position on the frame 2, allowing the production line to be adjusted as needed.

[0094] In an optional embodiment, if Figure 8 As shown, the disc 7 includes a first disc surface 71 and a second disc surface 72 arranged in a vertical direction along the transmission direction of the feed conveyor line 1, and the accommodating space 8 is formed between the first disc surface 71 and the second disc surface 72;

[0095] Bracket 6 includes a first support plate, a second support plate, and a connecting rod 19. The first and second support plates are connected by connecting rod 19. First tray 71 and second tray 72 are connected to the first and second support plates, respectively. The distance between the first and second support plates can be adjusted by adjusting connecting rod 19. In this embodiment, the provision of connecting rod 19 facilitates adjustment of the distance between first tray 71 and second tray 72, thereby allowing the width of accommodating space 8 to be adjusted, allowing the production line to accommodate containers 17 of varying sizes.

[0096] Based on the above-mentioned ideal embodiments of this application, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the scope of the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A container stacking device, characterized in that: include: A feed conveying line (1) for conveying a container (17); A disc (7) capable of rotating; a plurality of accommodating spaces (8) are arranged inside the disc (7) along its rotation direction; when the disc (7) rotates, the accommodating spaces (8) can sequentially dock with the unloading end of the feed conveyor line (1) to receive the container (17); A restraining assembly (3) includes a plurality of telescopic members (11), wherein each of the accommodating spaces (8) corresponds to at least one of the telescopic members (11); a stacking output line (5) for receiving and conveying the container (17) transmitted by the disc (7); when the disc (7) rotates, the stacking output line (5) can sequentially dock with the accommodating space (8) to receive the container (17) released by the disc (7); When any of the accommodating spaces (8) is rotated to a position docking with the unloading end of the feeding conveyor line (1), the corresponding telescopic member (11) can be extended toward the inside of the disc (7) to constrain the container (17) received by the accommodating space (8); when any of the accommodating spaces (8) is rotated to a position docking with the stacking output line (5), the corresponding telescopic member (11) can be at least partially retracted from the inside of the disc (7) to release the container (17).

2. The container stacking device according to claim 1, characterized in that: The container stacking device further comprises: A sensor (16), the sensor (16) being installed at the unloading end of the feeding conveying line (1) for sensing whether the container (17) is in place; A driving mechanism (4), the driving mechanism (4) is used to drive the disc (7) to rotate; the driving mechanism (4) is electrically connected to the sensor (16); When the sensor (16) senses that the container (17) is in place, it can send an electrical signal to cause the driving mechanism (4) to rotate a preset angle.

3. The container stacking device according to claim 1, characterized in that: The restraining assembly (3) further comprises: a guide rail (18), the two ends of which are respectively connected to the unloading end of the feeding conveying line (1) and the feeding end of the stacking output line (5), the guide rail (18) at least partially extending along the circumferential direction of the disc (7), and the surface of the guide rail (18) is used to abut against the edge of the container (17) in the accommodating space (8) to limit its position.

4. The container stacking device according to any one of claims 1 to 3, characterized in that: The telescopic member (11) is movably connected to the disc (7), and the telescopic member (11) reaches at least a first position and a second position through movement; when the telescopic member (11) is located at the first position, the telescopic member (11) can abut against the container (17) in the corresponding accommodating space (8), and when the telescopic member (11) is located at the second position, the telescopic member (11) is separated from the container (17) in the corresponding accommodating space (8).

5. The container stacking device according to claim 4, characterized in that: The constraint component (3) further comprises: a cylindrical end face cam (13), wherein the cylindrical end face cam (13) is coaxially arranged with the disc (7); an elastic member (9) connected to the telescopic member (11) and used to provide an elastic force for the telescopic member (11) to move from the first position to the second position, or from the second position to the first position; The end face of the cylindrical end face cam (13) abuts against one side of the telescopic member (11), and the end face of the cylindrical end face cam (13) is provided with a raised area (131) and a recessed area (132) at a position corresponding to the unloading end direction of the feeding conveying line (1) and the feeding end direction of the stacking output line (5), so that the telescopic member (11) moves under the squeezing action of the cylindrical end face cam (13).

6. The container stacking device according to claim 5, characterized in that: The constraint component (3) further comprises: A rotating shaft (14), the rotating shaft (14) is used for hingedly connecting one end of the telescopic member (11) to the disc (7); a fixed block (10), the fixed block (10) being fixed to the other end of the telescopic member (11) and being used for connecting the telescopic member (11) with the elastic member (9); Two ends of the elastic member (9) respectively abut against one side of the disc (7) and one side of the fixing block (10).

7. The container stacking device according to claim 6, characterized in that: One side of the fixing block (10) has an opening for at least partially embedding the elastic member (9).

8. The container stacking device according to any one of claims 1 to 3, characterized in that: The angle between the extending direction of the stacking output line (5) and the horizontal plane is 1° to 30°.

9. The container stacking device according to any one of claims 1 to 3, characterized in that: The container stacking device further comprises a frame (2) and a bracket (6), wherein the frame (2) extends along the transmission direction of the feed conveyor line (1), the disc (7) is mounted on the frame (2) via the bracket (6), and the disc (7) is rotatably connected to the bracket (6) via a main shaft (15).

10. The container stacking device according to claim 9, characterized in that: The disc (7) comprises a first disc surface (71) and a second disc surface (72) arranged in a direction perpendicular to the transmission direction of the feed conveying line (1), and the accommodating space (8) is formed between the first disc surface (71) and the second disc surface (72); The bracket (6) comprises a first support plate, a second support plate and a connecting rod (19), wherein the first support plate and the second support plate are connected via the connecting rod (19); the first disk surface (71) and the second disk surface (72) are connected to the first support plate and the second support plate respectively, and the distance between the first support plate and the second support plate can be adjusted by adjusting the connecting rod (19).

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