Plastic packaging box stacking device

Abstract

The utility model provides a plastic packing box stacking device which comprises a first conveying belt, a second conveying belt and a material taking and placing mechanism, the first conveying belt and the second conveying belt are horizontally arranged, the material taking and placing mechanism conveys plastic packing boxes between the first conveying belt and the second conveying belt, the material taking and placing mechanism comprises a horizontally-arranged base, and a horizontal rotating disc is movably arranged above the base. The base is provided with a first driving assembly used for driving the rotating disc to rotate around the axis of the rotating disc. The plastic packing box stacking device is high in practicability, plastic packing boxes can be automatically stacked through the first conveying belt, the second conveying belt and the material taking and placing mechanism, meanwhile, due to the arrangement of the rotating disc, the supporting columns and the first driving assembly, the material taking and placing mechanism can take and place the plastic packing boxes on the conveying belts without stop, and the working efficiency is improved. Compared with a traditional single linear back-and-forth transportation mode, a large amount of operation time is saved, and the fluency and the production efficiency of the whole production line are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging box processing, in particular to a plastic packaging box palletizing device. Background Art

[0002] Plastic take-out boxes, as an indispensable catering packaging product in modern life, are deeply loved by the catering industry and consumers for their lightness, durability, low cost and easy processing. These boxes are usually made of food-grade plastic materials such as polypropylene (PP) and polyethylene (PE) to ensure that no harmful substances are released when food is contained, thus ensuring food safety. They have various designs and are available in square, round, rectangular and other specifications to meet the packaging needs of different foods. In addition, plastic take-out boxes also have the advantages of good sealing performance and are easy to carry and store. Whether it is take-out delivery or food preservation after family gatherings, they can provide a convenient option. With the improvement of environmental awareness, many degradable or recyclable plastic take-out boxes have emerged on the market, aiming to reduce environmental pollution and promote green consumption. During the production and processing of existing plastic take-out boxes, the formed take-out boxes need to be conveyed, collected and stacked.

[0003] For example, the Chinese utility model patent with patent number CN219687691U provides a disposable plastic lunch box conveying and stacking device, in which a support is provided under the mounting platform, and a mounting groove and a stacking plate are respectively provided in the middle of the two ends of the upper surface, and a belt conveyor is provided inside the mounting groove; the material picking and placing device is located at the upper right corner of the mounting platform, wherein the middle part of the cross bar is provided with a through groove, and the upper right end is provided with a clamping block a, the supporting vertical rod is vertically arranged between the end face of the cross bar and the mounting platform, the sliding connection block is slidably arranged in the through groove, the upper end of which is vertically provided with a clamping block b, the lower end is provided with an electromagnet, and an electric telescopic rod is horizontally provided between the clamping block b and the clamping block a, the picking and placing plate is limited by an elastic member and is located directly below the sliding connection block, and an iron connecting rod is provided in the middle of the upper end of the picking and placing block, the side end is connected to the negative pressure fan through a connecting hose, and the lower surface is connected to a negative pressure suction pipe; the U-shaped lunch box stopper is located directly below the picking and placing plate, and the control box is located in the middle of the front end face of the supporting vertical rod; this utility model has the advantages of saving time and labor and stacking neatly and efficiently.

[0004] While this device solves the inefficiency caused by manual stacking of packaging boxes, its loading and unloading equipment is limited to transporting only one packaging box at a time. This not only limits its processing capacity but also requires frequent linear round-trip movement during transportation, significantly increasing the operation cycle and overall time consumption. This inefficient transportation mode leads to a large backlog of packaging boxes on the production line, resulting in unnecessary waiting time, which directly affects the smoothness and production efficiency of the entire production line. Utility Model Content

[0005] The utility model discloses a plastic packing box palletizing device, which solves the problem that in the use of traditional plastic packing box palletizing devices, a large number of packing boxes are piled up on the production line, seriously affecting the smoothness and production efficiency of the entire production line, because the material taking and unloading equipment can only transport one packing box at a time.

[0006] In order to solve the above technical problems, the present invention specifically adopts the following technical solutions:

[0007] A plastic packaging box palletizing device comprises a first conveyor belt and a second conveyor belt arranged horizontally, and a material taking and unloading mechanism for transporting the plastic packaging boxes between the first conveyor belt and the second conveyor belt, the transport directions of the first conveyor belt and the second conveyor belt are perpendicular to each other, and the transport direction of the first conveyor belt is toward the second conveyor belt, while the transport direction of the second conveyor belt is away from the first conveyor belt, the top surface of the first conveyor belt transports inverted plastic packaging boxes in sequence, and the top surface of the second conveyor belt transports a horizontal placement basket with an open top in sequence, the second conveyor belt is provided with a blocking component for intercepting the advancement of the placement basket, and the second conveyor belt is also provided with a detection component for monitoring the position of the placement basket and the stacking height of the plastic packaging boxes; the material taking and unloading mechanism comprises a horizontally arranged base, and the base is located between the first conveyor belt and the second conveyor belt At the angle formed by the projection of the plane and the second conveyor belt, a horizontal turntable is movably provided above the base, and a first driving assembly is provided on the base for driving the turntable to rotate around its own axis, and the tangential direction of the turntable corresponding to the first conveyor belt or the second conveyor belt is consistent with the transmission direction of the first conveyor belt or the second conveyor belt; a number of vertical support columns are evenly fixed at the edge of the top surface of the turntable, and a horizontal support plate is movably provided on the support column, the height of the support plate is greater than the height of the plastic packaging box on the first conveyor belt, one end of the support plate extends away from the center of the turntable, and a suction cup is provided on the bottom surface of the extended end of the support plate, and during the rotation of the turntable, the projection of the suction cup in the vertical direction passes through the travel path of the plastic packaging box and the placement basket, and a second driving assembly is provided on the support column for driving the support plate to move up and down along the support column.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] Place the plastic packing boxes face down on the top surface of the first conveyor belt in sequence and start the first conveyor belt to convey them; at the same time, place the placement baskets on the top surface of the second conveyor belt in sequence and use the second conveyor belt to convey them. When the detection component monitors that the projection of the placement basket and the suction cup close to the second conveyor belt coincides in the vertical direction, use the blocking component to intercept and fix the placement basket; previously, use the second driving component to drive the support plate to move up and down along the support column and adjust the bottom surface height of the suction cup to be flush with the height of the plastic packing box. When the plastic packing box transported on the first conveyor belt fits against the bottom surface of the suction cup, use the suction cup to lift the plastic packing box, and then use the first driving component to rotate the turntable so that the next empty suction cup is located above the first conveyor belt. Similarly, pre-adjust the height of the empty suction cup to wait for the transportation of the next plastic packing box; meanwhile, the plastic packing box that has been fixed by the suction cup is rotated to directly above the previously intercepted placement basket, use the second driving component to drive the support plate to move down, and cancel the fixation of the plastic packing box by the suction cup, then the plastic packing box can be moved into the placement basket. Repeat the above steps to achieve the sequential stacking operation of the plastic packing boxes; when the detection component monitors that the plastic packing boxes are stacked to the set height, cancel the interception and fixation of the placement basket by the blocking component so that the next empty placement basket reaches the designated position. In this way, the palletizing operation of the plastic packing boxes can be achieved. The utility model has strong practicability. By setting the first conveyor belt, the second conveyor belt and the picking and placing mechanism, the palletizing operation of the plastic packing boxes can be automatically carried out. At the same time, due to the setting of the turntable, several support columns and the first driving component, the picking and placing mechanism can continuously pick and place the plastic packing boxes on the conveyor belt. Compared with the traditional single linear reciprocating transportation method, a large amount of operation time is saved, and the smoothness and production efficiency of the entire production line are effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a front view schematic diagram of the present utility model;

[0011] Figure 2 is a top view schematic diagram of the present utility model;

[0012] Figure 3 is a front view sectional schematic diagram of the base and the turntable of the present utility model;

[0013] Figure 4 is a top view schematic diagram of the connecting plate of the present utility model;

[0014] Figure 5 is a front view sectional schematic diagram of the placement basket of the present utility model;

[0015] Figure 6 is a front view sectional schematic diagram of the support column of the present utility model;

[0016] In the figure: 1. First conveyor belt; 11. Feeding plate; 12. Support; 2. Base; 21. First motor; 3. Turntable; 31. Rotating shaft; 32. Connecting plate; 321. Groove; 33. Connecting rod; 331. Protrusion; 4. Support column; 41. Screw rod; 42. Second motor; 43. Cavity; 5. Support plate; 51. Slide block; 6. Suction cup; 61. Air extraction head; 7. Second conveyor belt; 71. Cylinder; 72. Stopper; 8. Placing basket; 81. Support block; 82. Stud; 9. Support frame; 91. First sensor; 92. Second sensor. Detailed implementation mode

[0017] The following will combine the attached drawings and embodiments to elaborate on the specific content of the present utility model in detail.

[0018] As Figure 1 and Figure 3 shown, the present utility model provides a plastic packing box palletizing device, including a horizontally arranged first conveyor belt 1 and a second conveyor belt 7, and a picking and placing mechanism for transporting plastic packing boxes between the first conveyor belt 1 and the second conveyor belt 7. The transportation directions of the first conveyor belt 1 and the second conveyor belt 7 are perpendicular to each other, and the transportation direction of the first conveyor belt 1 is towards the second conveyor belt 7, while the transportation direction of the second conveyor belt 7 is away from the first conveyor belt 1. Inverted plastic packing boxes are successively transported on the top surface of the first conveyor belt 1, and horizontally arranged placing baskets 8 with open tops are successively transported on the top surface of the second conveyor belt 7. A blocking component for intercepting the forward movement of the placing basket 8 is provided on the second conveyor belt 7, and a detection component for monitoring the position of the placing basket 8 and the stacking height of plastic packing boxes is also provided on the second conveyor belt 7; The picking and placing mechanism includes a horizontally arranged base 2, and the base 2 is located at the included angle formed by the projection of the first conveyor belt 1 on the plane where the second conveyor belt 7 is located and the second conveyor belt 7. A horizontally arranged turntable 3 is movably provided above the base 2. A first driving component for driving the turntable 3 to rotate around its own axis is provided on the base 2. The tangent direction of the turntable 3 corresponding to the first conveyor belt 1 or the second conveyor belt 7 is consistent with the transmission direction of the first conveyor belt 1 or the second conveyor belt 7; A plurality of vertical support columns 4 are evenly fixed at the edge of the top surface of the turntable 3. A horizontally arranged support plate 5 is movably provided on the support columns 4. The height of the support plate 5 is greater than the height of the plastic packing boxes on the first conveyor belt 1. One end of the support plate 5 extends towards the center away from the turntable 3. A suction cup 6 is provided on the bottom surface of the extended end of the support plate 5. During the rotation of the turntable 3, the projection of the suction cup 6 in the vertical direction passes through the travel paths of the plastic packing boxes and the placing baskets 8. A second driving component for driving the support plate 5 to move up and down along the support columns 4 is provided on the support columns 4.

[0019] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, four support columns 4 are provided. The first driving component includes a first motor 21 vertically arranged inside the base 2. The output end of the first motor 21 penetrates through the top surface of the base 2 and extends outside the base 2. A horizontal connecting rod 33 is fixed to the output end of the first motor 21. A convex block 331 is fixed to the top surface of the end of the connecting rod 33 far from the first motor 21. A vertical rotating shaft 31 is rotatably connected to the center of the base 2, and the top end of the rotating shaft 31 is fixedly connected to the center of the turntable 3. A connecting disk 32 that rotates coaxially with the rotating shaft 31 is fixed to the rotating shaft 31. Four outwardly opening grooves 321 are evenly formed on the side of the connecting disk 32. The included angle between every two adjacent grooves 321 is set at 90 degrees. And the connecting end of the connecting rod 33 and the first motor 21 is located on the angular bisector of the included angle between two adjacent grooves 321. The convex block 331 is engaged with the connecting disk 32 through the groove 321. The number of turns of the connecting rod 33 driven by the first motor 21 is four times the number of turns of the connecting disk 32. When the first motor 21 is started, the output end of the first motor 21 drives the connecting rod 33 to rotate around its own axis. Due to the settings of the convex block 331 and the groove 321, whenever the convex block 331 rotates towards the direction close to the connecting disk 32, the convex block 331 will be engaged with the connecting disk 32 through one of the grooves 321. And as the connecting rod 33 continues to rotate, since it is in the engaged state at this time, the convex block 331 will drive the connecting disk 32 to rotate 90 degrees. Subsequently, the convex block 331 will rotate away from the connecting disk 32, so that the convex block 331 and the groove 321 are no longer engaged. In this way, the function that the connecting rod 33 rotates one circle and drives the connecting disk 32 to rotate 90 degrees can be realized, so that the turntable 3 is intermittently rotated 90 degrees through the rotating shaft 31, enabling the suction cups 6 on the four support columns 4 to sequentially complete the material taking and placing operations; in addition, the support columns 4 can be set to more according to actual production needs, and a stepping motor can be used to drive the turntable 3 to intermittently rotate.

[0020] As Figure 1 and Figure 6 shown, the second driving component includes a screw rod 41 rotatably connected inside the support column 4. A second motor 42 for driving the screw rod 41 to rotate around its own axis is provided at the top of the support column 4. A slider 51 fixed to the support plate 5 is sleeved on the screw rod 41. A cavity 43 for the slider 51 to move is formed inside the support column 4. When the second motor 42 is started, the output end of the second motor 42 drives the screw rod 41 to rotate around its own axis, and the slider 51 can be driven to move up and down along the screw rod 41, thereby realizing the control of the height of the support plate 5.

[0021] As Figure 1 and Figure 2As shown, the placement basket 8 is set in a square shape. The blocking component includes two horizontal cylinders 71 respectively arranged on both sides of the second conveyor belt 7, and a horizontal L-shaped stopper 72 is fixed to the output end of each of the two cylinders 71, and the L-shaped protruding ends of the two stoppers 72 are arranged opposite to each other. When the placement basket 8 is conveyed to the set position, the two cylinders 71 are started, and the output ends of the two cylinders 71 can drive the corresponding stoppers 72 to move relatively. Due to the L-shaped setting of the stoppers 72, while intercepting the placement basket 8, the stoppers 72 can also fix the placement basket 8 at the central axis of the second conveyor belt 7, thus better preparing for the subsequent feeding operation.

[0022] As Figure 1 and Figure 2 shown, the detection component includes a support frame 9 vertically fixed on the side of the second conveyor belt 7 away from the picking and placing mechanism. A first sensor 91 and a second sensor 92 are respectively provided at the bottom end and the top end of the support frame 9; when the blocking component intercepts the placement basket 8, the projections of the support column 4 closest to the second conveyor belt 7, the intercepted placement basket 8, and the support frame 9 in the vertical direction are all on the same straight line, and the first sensor 91 is flush with the placement basket 8 in the vertical direction. Specifically, the first sensor 91 can be composed of an infrared emitter and an infrared receiver, and the second sensor 92 can also adopt a similar structure, or a pressure sensor is set on the second conveyor belt 7 and two electrical signals are transmitted by setting upper and lower limits, so as to respectively realize the interception and release operations of the empty placement basket 8 and the full-load placement basket 8.

[0023] As Figure 2 and Figure 5 shown, a support block 81 is provided at the inner center of the placement basket 8. The bottom end of the side surface of the support block 81 is inclined towards the inner wall of the placement basket 8, and the support block 81 is detachably and fixedly connected to the placement basket 8 through a stud 82. By providing the support block 81, the plastic packing box at the bottommost part in the placement basket 8 can be fixed; by providing the stud 82, the fixing and disassembling operations of the support block 81 can be realized. Further, the support block 81 can be set in different shapes and sizes to adapt to plastic packing boxes of different shapes and sizes.

[0024] As Figure 1 and Figure 6 shown, the support plate 5 is provided with a hollow in the middle, and the bottom surface of the support plate 5 is communicated with the suction cup 6, and an air extraction head 61 is communicated with the top surface of the support plate 5. By providing the air extraction head 61 and the support plate 5 with a hollow in the middle, the suction cup 6 can realize the picking and placing operations of the plastic packing box.

[0025] As Figure 1 and Figure 2As shown in the figure, on both sides of one end of the first conveyor belt 1 away from the second conveyor belt 7, there are vertically fixed material guiding plates 11, and one end of the two material guiding plates 11 close to the second conveyor belt 7 is inclined towards the central axis of the first conveyor belt 1. The inclined setting of the material guiding plates 11 enables the plastic packing boxes to be conveyed only at the central axis of the first conveyor belt 1 in sequence, which is more convenient for the suction cup 6 to lift the packing boxes, and also enables the packing boxes to be placed more stably in the placing basket 8 during feeding.

[0026] As Figure 1 shown in the figure, a support 12 is fixed to the bottom surface of the first conveyor belt 1, making the height of the first conveyor belt 1 greater than that of the second conveyor belt 7. The setting that the height of the first conveyor belt 1 is greater than that of the second conveyor belt 7 enables the picking and placing operations of the suction cup 6 to be more smooth, thus improving the production efficiency.

[0027] It should be noted that power can be provided for the second motor 42 and the suction cup 6 by setting a power source, such as a battery pack, at the center of the top surface of the turntable 3, so as to prevent the wires from getting entangled during the rotation process.

[0028] During use, the plastic packing boxes are placed upside down on the top surface of the first conveyor belt 1 in sequence, and the first conveyor belt 1 is started to convey them; at the same time, the placing baskets 8 are placed on the top surface of the second conveyor belt 7 in sequence, and the second conveyor belt 7 is used to convey them. When the first sensor 91 detects that the placing basket 8 reaches the set position, the two cylinders 71 are started, and the output ends of the two cylinders 71 can drive the corresponding stoppers 72 to move relatively, so as to intercept and fix the placing basket 8; the support plate 5 is driven to move up and down along the support column 4 by the second motor 42 in advance, and the bottom surface height of the suction cup 6 is adjusted to be flush with the height of the plastic packing box. When the plastic packing box transported on the first conveyor belt 1 is in contact with the bottom surface of the suction cup 6, the plastic packing box is lifted by the suction cup 6, and then the first motor 21 is started to drive the connecting rod 33 to rotate one circle, so as to drive the turntable 3 to rotate 90 degrees, making the next empty suction cup 6 located above the first conveyor belt 1. Similarly, the height of the empty suction cup 6 is adjusted in advance to wait for the transportation of the next plastic packing box; at the same time, the plastic packing box fixed by the suction cup 6 is rotated to directly above the pre-intercepted placing basket 8, and the support plate 5 is driven to move down by the second motor 42, and the fixation of the plastic packing box by the suction cup 6 is cancelled, then the plastic packing box can be moved into the placing basket 8. By repeating the above steps, the sequential stacking operation of the plastic packing boxes can be achieved; when the detection component detects that the plastic packing boxes are stacked to the set height, the interception and fixation of the placing basket 8 by the blocking component are cancelled, so that the next empty placing basket 8 reaches the designated position. In this way, the palletizing operation of the plastic packing boxes can be achieved.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A plastic packaging box palletizing device, comprising a first conveyor belt (1) and a second conveyor belt (7) arranged horizontally, and a loading and unloading mechanism for transporting the plastic packaging boxes between the first conveyor belt (1) and the second conveyor belt (7), characterized in that: The transport directions of the first conveyor belt (1) and the second conveyor belt (7) are perpendicular to each other, and the transport direction of the first conveyor belt (1) is toward the second conveyor belt (7), while the transport direction of the second conveyor belt (7) is away from the first conveyor belt (1). The top surface of the first conveyor belt (1) sequentially transports inverted plastic packaging boxes, and the top surface of the second conveyor belt (7) sequentially transports horizontal placement baskets (8) with open tops. The second conveyor belt (7) is provided with a blocking component for intercepting the forward movement of the placement basket (8). The second conveyor belt (7) is also provided with a detection component for monitoring the position of the placement basket (8) and the stacking height of the plastic packaging boxes. The material taking and unloading mechanism comprises a horizontally arranged base (2), and the base (2) is located at an angle formed by the projection of the first conveyor belt (1) on the plane where the second conveyor belt (7) is located and the second conveyor belt (7); a horizontal turntable (3) is movably provided above the base (2); a first driving component for driving the turntable (3) to rotate around its own axis is provided on the base (2); the tangential direction of the turntable (3) corresponding to the first conveyor belt (1) or the second conveyor belt (7) is consistent with the transmission direction of the first conveyor belt (1) or the second conveyor belt (7); A plurality of vertical support columns (4) are evenly fixed at the edge of the top surface of the turntable (3), and a horizontal support plate (5) is movably provided on the support column (4). The height of the support plate (5) is greater than the height of the plastic packaging box on the first conveyor belt (1). One end of the support plate (5) extends away from the center of the turntable (3). A suction cup (6) is provided on the bottom surface of the extended end of the support plate (5). During the rotation of the turntable (3), the vertical projection of the suction cup (6) passes through the travel path of the plastic packaging box and the placement basket (8). A second driving component for driving the support plate (5) to move up and down along the support column (4) is provided on the support column (4).

2. The plastic packaging box palletizing device according to claim 1, characterized in that: The support columns (4) are arranged in four pieces, and the first driving assembly includes a first motor (21) vertically arranged inside the base (2), the output end of the first motor (21) passes through the top surface of the base (2) and extends outside the base (2), a horizontal connecting rod (33) is fixed to the output end of the first motor (21), a protrusion (331) is fixed to the top surface of one end of the connecting rod (33) away from the first motor (21), a vertical rotating shaft (31) is rotatably connected at the center of the base (2), and the top end of the rotating shaft (31) is fixedly connected to the center of the turntable (3), and the rotating shaft (33) is fixedly connected to the center of the turntable (3). 1) is fixed with a connecting disk (32) coaxially rotating with the rotating shaft (31), and four outward-facing grooves (321) are evenly opened on the side of the connecting disk (32), and the angle between each two adjacent grooves (321) is set at 90 degrees, and the connecting end of the connecting rod (33) and the first motor (21) is located on the angular bisector of the angle between two adjacent grooves (321), and the protrusion (331) is engaged with the connecting disk (32) through the groove (321), and the number of revolutions driven by the first motor (21) to rotate the connecting rod (33) is four times the number of revolutions of the connecting disk (32).

3. The plastic packaging box palletizing device according to claim 1, characterized in that: The second driving assembly comprises a screw rod (41) rotatably connected to the inside of the support column (4); a second motor (42) for driving the screw rod (41) to rotate around its own axis is provided at the top of the support column (4); a slider (51) fixed to the support plate (5) is sleeved on the screw rod (41); and a cavity (43) for the slider (51) to move is provided in the support column (4).

4. The plastic packaging box palletizing device according to claim 1, characterized in that: The placement basket (8) is square in shape, and the blocking assembly comprises two horizontal cylinders (71) respectively arranged on both sides of the second conveyor belt (7). The output ends of the two cylinders (71) are fixed with horizontal L-shaped blocks (72), and the L-shaped protruding ends of the two blocks (72) are arranged opposite to each other.

5. The plastic packaging box palletizing device according to claim 1, characterized in that: The detection component comprises a support frame (9) vertically fixed to a side of the second conveyor belt (7) away from the material discharging mechanism, and a first sensor (91) and a second sensor (92) are respectively provided at the bottom and top of the support frame (9); when the blocking component intercepts the placement basket (8), the projections of the support column (4) closest to the second conveyor belt (7), the intercepted placement basket (8) and the support frame (9) in the vertical direction are all located in a straight line, and the first sensor (91) and the placement basket (8) in the vertical direction are flush with each other.

6. The plastic packaging box palletizing device according to claim 1, characterized in that: A support block (81) is provided at the inner center of the placement basket (8), and the side bottom end of the support block (81) is inclined toward the inner wall of the placement basket (8), and the support block (81) and the placement basket (8) are detachably fixedly connected via a stud (82).

7. The plastic packaging box palletizing device according to claim 1, characterized in that: The support plate (5) is hollowed out in the middle, and the bottom surface of the support plate (5) is connected to the suction cup (6), and the top surface of the support plate (5) is connected to the air extraction head (61).

8. The plastic packaging box palletizing device according to claim 1, characterized in that: Vertical guide plates (11) are fixed on both sides of the end of the first conveyor belt (1) away from the second conveyor belt (7), and the ends of the two guide plates (11) close to the second conveyor belt (7) are inclined toward the central axis of the first conveyor belt (1).

9. The plastic packaging box palletizing device according to claim 1, characterized in that: A support (12) is fixed to the bottom surface of the first conveyor belt (1), so that the height of the first conveyor belt (1) is greater than the height of the second conveyor belt (7).

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