Stock bin structure of packaging box

By designing an adjustable packaging box silo structure, the problem of low silo size fixation and placement efficiency in the prior art is solved, multi-size adaptability and efficient molding are achieved, and production efficiency and automation are improved.

CN223117664UActive Publication Date: 2025-07-18ZHUHAI HUIBANG INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202521151962.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-06
Publication Date
2025-07-18
Estimated Expiration
2035-06-06

AI Technical Summary

Technical Problem

The size of existing paper packaging boxes silos is fixed, resulting in different packaging boxes of different sizes requiring different silos, which increases costs and affects production efficiency. The planar packaging boxes are easily interfered by the opening edge of the silo when placed, affecting the forming efficiency.

Method used

The adjustable packaging box silo structure is designed, including a first and second side plate with adjustable distance, equipped with a guide plate and a limit plate, guided through the flange and inclined surface of the guide plate, combined with photoelectric sensor control, to achieve automated conveying and prevent falling.

Benefits of technology

The multi-size adaptability of the silo structure is achieved, the number and cost of silos are reduced, the forming efficiency and automatic conveying efficiency of the packaging box are improved, and the planar packaging box is prevented from falling, ensuring the smooth forming of the flat packaging box.

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Abstract

The utility model discloses a packing box stock bin structure which comprises two first side plates and two second side plates, the relative distance between the two first side plates is adjustable, the relative distance between the two second side plates is adjustable, the two first side plates are both provided with first guide plates, one end of each first guide plate is provided with a first flanging, and the other end of each first guide plate is provided with a second flanging. At least one second side plate is provided with a second guide plate, one end of the second guide plate is provided with a second flange, the end of the first side plate is provided with a first limiting plate, and the end of the second side plate is provided with a second limiting plate. The stock bin structure can be matched with packaging boxes of various sizes, the stock bin structure does not need to be replaced when the packaging boxes of different sizes are produced, only the relative distance between the two first side plates and the relative distance between the two second side plates need to be adjusted, and under the guiding action of the first turned-over edge and the second turned-over edge, the stock bin structure can be conveniently replaced. The plane-shaped packaging box can be very easily placed in a space formed by the first side plate and the second side plate in a surrounding mode.
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Description

Technical Field

[0001] The utility model relates to the field of storage bins, and particularly relates to a bin structure for packaging boxes. Background Art

[0002] Paper packaging boxes are applied in various industries. Before being formed, a paper packaging box is a flat cardboard (referred to as a "flat packaging box"). When a forming device forms a paper packaging box, a suction cup on the forming device sucks the flat packaging box and transfers it to a forming area for processing and forming. Usually, a bin for placing flat packaging boxes is installed above the forming device. A number of flat packaging boxes stacked together are placed in the bin. The bottom of the bin is open, and the suction cup on the forming device can suck the lowermost flat packaging box in the bin to transfer it.

[0003] The sizes of existing bins for placing flat packaging boxes are usually fixed. Different-sized packaging boxes require corresponding bins for adaptation, which not only increases the cost of the bins but also causes great trouble in the production transfer of different-sized packaging boxes, affecting production efficiency. In addition, for an existing bin for placing flat packaging boxes, when placing a flat packaging box into the bin, the side of the flat packaging box is easily interfered by the edge of the opening of the bin, resulting in the flat packaging box being unable to be quickly placed into the bin. It is necessary to completely align the outer edge of the flat packaging box with the opening of the bin to place the flat packaging box into the bin, thereby affecting the overall forming efficiency of the flat packaging box. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a bin structure for packaging boxes.

[0005] According to one aspect of the utility model, a bin structure for packaging boxes is provided, which includes two first side plates and two second side plates. The two first side plates are arranged oppositely, and the two second side plates are arranged oppositely. The two first side plates and the two second side plates jointly enclose a space for placing packaging boxes.

[0006] The relative distance between the two first side plates is adjustable.

[0007] The relative distance between the two second side plates is adjustable.

[0008] First guide plates are provided on both of the two first side plates. The first guide plates are located between the two first side plates, and one end of each first guide plate is provided with a first flanging in a turned-out shape.

[0009] Second guide plates are provided on at least one of the two second side plates. The second guide plates are located between the two second side plates, and one end of each second guide plate is provided with a second flanging in a turned-out shape.

[0010] A first limiting plate for preventing the packaging box from falling is provided at the end of the first side plate away from the first flanging.

[0011] A second limiting plate for preventing the packaging box from falling is provided at the end of the second side plate away from the second flanging.

[0012] In the bin structure of the present utility model, a flat packaging box can be placed in the space enclosed by two first side plates and two second side plates. The first limiting plate and the second limiting plate can support the bottommost flat packaging box to prevent it from falling out. Since the relative distance between the two first side plates is adjustable and the relative distance between the two second side plates is adjustable, the size of the space enclosed by the two first side plates and the two second side plates can be adaptively adjusted according to the size of the packaging box, and it can be adapted to packaging boxes of various sizes. Thereby, the number of bin structures and the overall cost can be reduced. Moreover, when switching to different-sized packaging boxes, there is no need to replace the bin structure, and only the relative distance between the two first side plates and the relative distance between the two second side plates need to be adjusted adaptively, which is very convenient. In addition, since the first flanging on the first guide plate and the second flanging on the second guide plate are both turned outwards, under the guiding action of the first flanging and the second flanging, the flat packaging box can be very easily placed into the space enclosed by the two first side plates and the two second side plates, that is, the bin, thereby improving the overall forming efficiency of the flat packaging box.

[0013] Preferably, it further includes two first mounting plates, a second mounting plate, a third mounting plate, two groups of first guide rods, a second guide rod, and a third guide rod.

[0014] The two first mounting plates are arranged opposite to each other. The two ends of the first guide rod are respectively fixed on the two first mounting plates, and the first side plate is slidably arranged on the first guide rod.

[0015] The second mounting plate and the third mounting plate are arranged opposite to each other. The second mounting plate is fixed on a group of first guide rods, and the two ends of the third mounting plate are respectively fixed on the two first mounting plates.

[0016] The second guide rod is inserted through the second mounting plate, and the end of the second guide rod is fixed on one second side plate. The second mounting plate is slidably connected to the second guide rod.

[0017] The third guide rod is inserted through the third mounting plate, and the end of the third guide rod is fixed on the other second side plate. The third mounting plate is slidably connected to the third guide rod.

[0018] Therefore, the two first mounting plates can support the two groups of first guide rods, and the two first side plates can slide smoothly along the first guide rods, so as to quickly adjust the relative distance between the two first side plates. One group of first guide rods can support the second mounting plate, the second mounting plate can support the second guide rods, one second side plate can smoothly adjust the relative distance between the two second side plates along the length direction of the second guide rods, the third mounting plate can support the third guide rods, and the other second side plate can smoothly adjust the relative distance between the two second side plates along the length direction of the third guide rods. It is very convenient to adjust the size of the space formed by enclosing the two first side plates and the two second side plates together.

[0019] Preferably, two first locking members are sleeved on the first guide rods. One end of one first locking member is fixed on one first side plate, and one end of the other first locking member is fixed on the other first side plate. Two first clamping portions are provided at the other ends of the first locking members. The two first clamping portions clamp the first guide rods, and the free ends of the two first clamping portions are connected by a first bolt.

[0020] A second locking member is sleeved on the second guide rods. One end of the second locking member is fixed on the second mounting plate. Two second clamping portions are provided at the other end of the second locking member. The two second clamping portions clamp the second guide rods, and the free ends of the two second clamping portions are connected by a second bolt.

[0021] A third locking member is sleeved on the third guide rods. One end of the third locking member is fixed on the third mounting plate. Two third clamping portions are provided at the other end of the third locking member. The two third clamping portions clamp the third guide rods, and the free ends of the two third clamping portions are connected by a third bolt.

[0022] Therefore, when it is necessary to adjust the size of the space formed by enclosing the two first side plates and the two second side plates together, loosen the first bolt, the second bolt, and the third bolt. The two first clamping portions on the first locking member loosen the first guide rods, the two second clamping portions on the second locking member loosen the second guide rods, and the two third clamping portions on the third locking member loosen the third guide rods. At this time, the first side plates and the second side plates can be slid freely. After the relative distances between the two first side plates and between the two second side plates are adjusted, tighten the first bolt, the second bolt, and the third bolt. It is very convenient to adjust the positions of the first side plates and the second side plates.

[0023] Preferably, a second guide plate is provided on one second side plate, and a third guide plate is provided on the other second side plate. The third guide plate is located between the two second side plates, and an inclined surface is provided at one end of the third guide plate.

[0024] Therefore, under the guiding action of the inclined surfaces on the first flanging, the second flanging, and the third guiding plate, the planar packaging box can be very easily placed into the space enclosed by the two first side plates and the two second side plates, that is, the silo, thereby improving the overall forming efficiency of the planar packaging box. The inclined surface on the third guiding plate can further improve the ease of placing the planar packaging box into the silo.

[0025] Preferably, it further includes a photoelectric sensor. There is a perforation on the first flanging. The transmitting end of the photoelectric sensor is arranged on one of the first side plates and the transmitting end of the photoelectric sensor faces the perforation on the first flanging of this first side plate. The receiving end of the photoelectric sensor is arranged on the other first side plate and the receiving end of the photoelectric sensor faces the perforation on the first flanging of this first side plate.

[0026] Therefore, the silo structure of the present utility model can be connected to the conveying line for conveying the planar packaging box. In this application scenario, the silo structure is placed obliquely as a whole, which is convenient for the conveying line to automatically convey the planar packaging boxes one by one into the space enclosed by the two first side plates and the two second side plates, that is, the silo. When the thickness of the planar packaging boxes in the silo stacks up to the position of the perforation on the first flanging, the light between the transmitting end and the receiving end of the photoelectric sensor is blocked by the planar packaging box, the photoelectric sensor is triggered, the photoelectric sensor generates a switching signal and sends the switching signal to the control component of the conveying line, and the control component controls the conveying line to stop conveying, ensuring that the topmost planar packaging box in the silo will not overflow from the silo.

[0027] Preferably, the end of the first limiting plate extends out from the surface of the first guiding plate, and the end of the second limiting plate extends out from the surface of the second guiding plate.

[0028] Therefore, the end of the first limiting plate extending out from the surface of the first guiding plate and the end of the second limiting plate extending out from the surface of the second guiding plate can jointly support the bottommost planar packaging box to prevent the planar packaging box from falling out of the silo.

[0029] Preferably, the end of the first limiting plate extends out from the surface of the first guiding plate, the end of one of the second limiting plates extends out from the surface of the second guiding plate, and the end of the other second limiting plate extends out from the surface of the third guiding plate.

[0030] Therefore, the end of the first limiting plate extending out from the surface of the first guiding plate, the end of one of the second limiting plates extending out from the surface of the second guiding plate, and the end of the other second limiting plate extending out from the surface of the third guiding plate can jointly support the bottommost planar packaging box from all around to prevent the planar packaging box from falling out of the silo.

[0031] Preferably, a first guiding surface is provided on the end of the first limiting plate extending from the surface of the first guiding plate, a second guiding surface is provided on the end of the second limiting plate extending from the surface of the second guiding plate, and a third guiding surface is provided on the end of the second limiting plate extending from the surface of the third guiding plate.

[0032] Therefore, when the suction cup on the forming device sucks the bottommost flat packaging box in the magazine, the existence of the first guiding surface, the second guiding surface, and the third guiding surface enables the bottommost flat packaging box in the magazine to be easily drawn out of the magazine by the suction cup on the forming device, so as to transfer it to the forming area for processing and forming.

[0033] Preferably, the position of the first limiting plate on the first side plate can be adjusted, and the position of the second limiting plate on the second side plate can be adjusted.

[0034] Therefore, according to the size of the flat packaging box in the magazine, the length of the first limiting plate extending from the surface of the first guiding plate can be adjusted, and the length of the second limiting plate extending from the surface of the second guiding plate can be adjusted to ensure that the bottommost flat packaging box in the magazine will not easily fall out of the magazine.

[0035] Preferably, a first adjusting bolt and a second adjusting bolt are further included. A first adjusting groove is provided on the first limiting plate, and a second adjusting groove is provided on the second limiting plate. The end of the first adjusting bolt passes through the first adjusting groove and is screwed on the end of the first side plate, and the end of the second adjusting bolt passes through the second adjusting groove and is screwed on the end of the second side plate.

[0036] Therefore, when it is necessary to adjust the length of the first limiting plate extending from the surface of the first guiding plate, loosen the first adjusting bolt, move the first limiting plate, and the first adjusting bolt moves along the first adjusting groove. When the length of the first limiting plate extending from the surface of the first guiding plate is adjusted, tighten the first adjusting bolt. When it is necessary to adjust the length of the second limiting plate extending from the surface of the second guiding plate, loosen the second adjusting bolt, move the second limiting plate, and the second adjusting bolt moves along the second adjusting groove. When the length of the second limiting plate extending from the surface of the second guiding plate is adjusted, tighten the second adjusting bolt. Description of the Drawings

[0037] Figure 1 is a schematic structural diagram of a magazine structure of a packaging box according to the present utility model;

[0038] Figure 2 is Figure 1 a schematic structural diagram of another perspective of the magazine structure shown;

[0039] Figure 3 is Figure 1 a schematic structural diagram of still another perspective of the magazine structure shown;

[0040] Figure 4 For Figure 2 The enlarged structural schematic diagram of the position A in the silo structure shown;

[0041] Figure 5 For Figure 1 The reference diagram of the usage state of the silo structure shown. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention. 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 quantity of the indicated technical features.

[0044] Refer to Figures 1 to 4 , a silo structure of a packaging box, including two first side plates 1, two second side plates 2, two first mounting plates 3, a second mounting plate 4, a third mounting plate 5, two groups of first guide rods 6, a second guide rod 7, a third guide rod 8, a photoelectric sensor 9, a first adjusting bolt 10, and a second adjusting bolt 20.

[0045] Refer to Figures 1 to 3 , the two first side plates 1 are arranged oppositely, the two second side plates 2 are arranged oppositely, and the two first side plates 1 and the two second side plates 2 jointly enclose a space for placing a planar packaging box, that is, a silo.

[0046] Refer to Figures 1 to 3 , the two first mounting plates 3 are arranged oppositely, both ends of the first guide rod 6 are respectively fixed on the two first mounting plates 3, the two groups of first guide rods 6 are arranged in parallel, the number of the first guide rods 6 in each group of first guide rods 6 is two, the two first guide rods 6 in each group of first guide rods 6 are arranged one above the other, both of the two first side plates 1 are sleeved on the first guide rods 6, and the two first side plates 1 can slide along the two groups of first guide rods 6, so as to adjust the relative distance between the two first side plates 1. The two first mounting plates 3 can provide support for the two groups of first guide rods 6, and the two first side plates 1 can slide smoothly along the first guide rods 6, so as to quickly adjust the relative distance between the two first side plates 1.

[0047] Refer to Figures 1 to 4 , two first locking members 61 are sleeved on each first guide rod 6. One end of a first locking member 61 on each first guide rod 6 is fixed to one first side plate 1 by a screw, and one end of the other first locking member 61 on each first guide rod 6 is fixed to the other first side plate 1 by a screw. Two first clamping portions 611 are formed at the other end of the first locking member 61. Refer to Figure 4 , the bottoms of the two first clamping portions 611 are connected, the tops of the two first clamping portions 611 are disconnected, and the two first clamping portions 611 can clamp the first guide rod 6. The free ends of the two first clamping portions 611 ( Figure 4 the tops of the first clamping portions 611 in are connected by a first bolt 62; when the relative distance between the two first side plates 1 needs to be adjusted, loosen the first bolt 62, and the two first clamping portions 611 on the first locking member 61 release the first guide rod 6. At this time, the first side plate 1 can slide freely on the first guide rod 6. After the relative distance between the two first side plates 1 is adjusted, tighten the first bolt 62. The adjustment of the relative distance between the two first side plates 1 is very convenient.

[0048] Refer to Figures 1 to 3 , the second mounting plate 4 and the third mounting plate 5 are arranged oppositely. The second mounting plate 4 is fixed on a group of first guide rods 6, that is, a group of first guide rods 6 are inserted through the second mounting plate 4. Limit screws can be screwed in the second mounting plate 4. The limit screws are screwed in the second mounting plate 4 and the ends of the limit screws press against the first guide rods 6 in the second mounting plate 4. The second guide rod 7 is inserted through the second mounting plate 4. The end of the second guide rod 7 is fixed to a second side plate 2. The second mounting plate 4 is slidably connected to the second guide rod 7. The second mounting plate 4 can provide support for the second guide rod 7. One second side plate 2 can smoothly adjust the relative distance between the two second side plates 2 along the length direction of the second guide rod 7.

[0049] Refer to Figures 1 to 3, in this embodiment, the number of the second guide rods 7 is two, and the two second guide rods 7 are arranged in parallel. The two second guide rods 7 can ensure that the second side plate 2 slides smoothly along the length direction of the second guide rods 7. A second locking member 71 is sleeved on each second guide rod 7. One end of the second locking member 71 is fixed on the second mounting plate 4 by screws. Two second clamping portions (not shown) are formed at the other end of the second locking member 71. The bottoms of the two second clamping portions are connected, and the tops of the two second clamping portions are disconnected. The two second clamping portions can clamp the second guide rod 7. The free ends of the two second clamping portions are connected by a second bolt. The structure of the second locking member 71 is the same as that of the first locking member 61; when the relative distance between the two second side plates 2 needs to be adjusted, loosen the second bolt on the second guide rod 7, and the two second clamping portions on the second locking member 71 loosen the second guide rod 7. At this time, the second side plate 2 can be freely slid. After the relative distance between the two second side plates 2 is adjusted, tighten the second bolt. The adjustment of the relative distance between the two second side plates 2 is very convenient.

[0050] Refer to Figures 1 to 3 , both ends of the third mounting plate 5 are respectively fixed on the two first mounting plates 3. The third guide rod 8 is inserted through the third mounting plate 5. The end of the third guide rod 8 is fixed on the other second side plate 2. The third mounting plate 5 is slidably connected to the third guide rod 8. The third mounting plate 5 can provide support for the third guide rod 8. The second side plate 2 can smoothly adjust the relative distance between the two second side plates 2 along the length direction of the third guide rod 8. In this embodiment, the number of the third guide rods 8 is four, and the four third guide rods 8 are arranged in a square. The four third guide rods 8 can ensure that the second side plate 2 slides smoothly along the length direction of the third guide rod 8.

[0051] Refer to Figures 1 to 3 , a third locking member 81 is sleeved on each third guide rod 8. One end of the third locking member 81 is fixed on the third mounting plate 5 by screws. Two third clamping portions (not shown) are formed at the other end of the third locking member 81. The bottoms of the two third clamping portions are connected, and the tops of the two third clamping portions are disconnected. The two third clamping portions can clamp the third guide rod 8. The free ends of the two third clamping portions are connected by a third bolt. The structure of the third locking member 81 is the same as that of the second locking member 71 and the first locking member 61; when the relative distance between the two second side plates 2 needs to be adjusted, loosen the third bolt on the third guide rod 8, and the two second clamping portions on the third locking member 81 loosen the third guide rod 8. At this time, the second side plate 2 can be freely slid. After the relative distance between the two second side plates 2 is adjusted, tighten the third bolt. The adjustment of the relative distance between the two second side plates 2 is very convenient.

[0052] Refer to Figures 1 to 3, on both of the two first side plates 1, there are first guide plates 11 mounted (such as by screws). The first guide plates 11 are located between the two first side plates 1. The first guide plates 11 are mounted on the end faces of the first side plates 1 facing the other first side plate 1. One ends of the two first guide plates 11 ( Figure 2 the upper ends of the first guide plates 11 in Figure 2 ) are integrally formed with first flanges 12 in a turned-out shape. In this embodiment, on one second side plate 2, there is a second guide plate 21 mounted (such as by screws), and on the other second side plate 2, there is a third guide plate 24 mounted (such as by screws). The second guide plate 21 is located between the two second side plates 2, and the third guide plate 24 is located between the two second side plates 2. The second guide plate 21 is mounted on the end face of one second side plate 2 facing the other second side plate 2, and the third guide plate 24 is mounted on the end face of the other second side plate 2 facing the second guide plate 21. One end of the second guide plate 21 ( Figure 2 the upper end of the second guide plate 21 in Figure 2 ) is integrally formed with a second flange 22 in a turned-out shape. One end of the third guide plate 24 ( Figure 2 the upper end of the third guide plate 24 in Figure 2 ) is formed with an inclined surface 241 ( Figure 1 as shown). Under the guiding action of the two first flanges 12, the second flange 22, and the inclined surface 241 on the third guide plate 24, the flat packaging box can be very easily placed into the space enclosed by the two first side plates 1 and the two second side plates 2, that is, the storage bin, thereby improving the overall forming efficiency of the flat packaging box. The inclined surface 241 on the third guide plate 24 can further improve the ease of placing the flat packaging box into the storage bin; in addition, the storage bin structure of the present utility model can be connected to the conveying line for conveying the flat packaging box. The whole storage bin structure is placed obliquely ( Figure 1 the state shown). The first flanges 12 on the first guide plates 11, the second flanges 22 on the second guide plates 21, and the inclined surface 241 on the third guide plate 24 can enable the flat packaging boxes on the conveying line to be smoothly and automatically conveyed into the space enclosed by the two first side plates 1 and the two second side plates 2, that is, the storage bin.

[0053] In other embodiments, it can also be: on both of the two second side plates 2, there are second guide plates 21 mounted, and replace the Figure 1 third guide plate 24 in Figure 1 with a second guide plate 21, and this second guide plate 21 is formed with a second flange 22.

[0054] Referring to Figures 1 to 3 , on the ends of the two first side plates 1 far from the first flanges 12 ( Figure 2 the bottoms of the first side plates 1 in Figure 2 ), there are first limit plates 13 mounted. The end of the first limit plate 13 on one first side plate 1 extends from the surface of the first guide plate 11 on this first side plate 1 ( Figure 1As shown in the figure, the end of the first limiting plate 13 on another first side plate 1 protrudes from the surface of the first guiding plate 11 on the first side plate 1. Figure 1 As shown in the figure, a second limiting plate 23 is installed on the end of one second side plate 2 away from the second flanging 22, and a second limiting plate 23 is also installed on the end of the other second side plate 2 away from the inclined surface 241. The end of the second limiting plate 23 on one second side plate 2 protrudes from the surface of the second guiding plate 21 on the second side plate 2, and the end of the second limiting plate 23 on the other second side plate 2 protrudes from the surface of the third guiding plate 24 on the second side plate 2. The first limiting plates 13 on the two first side plates 1 and the second limiting plates 23 on the two second side plates 2 can jointly support the bottommost planar packaging box from the four sides of the planar packaging box, and are jointly used to prevent the planar packaging box in the bin, that is, the space formed by the two first side plates 1 and the two second side plates 2 surrounding the planar packaging box, from falling.

[0055] Refer to Figure 1 In this embodiment, the number of the first limiting plates 13 on each first side plate 1 is one, and the number of the second limiting plates 23 on each second side plate 2 is two. The two first limiting plates 13 and the four second limiting plates 23 can jointly and stably support the planar packaging box in the bin.

[0056] Refer to Figure 3 As shown in the figure, a first guiding surface 131 is formed on the end of the first limiting plate 13 protruding from the surface of the first guiding plate 11, a second guiding surface 231 is formed on the end of the second limiting plate 23 protruding from the surface of the second guiding plate 21, and a third guiding surface 232 is formed on the end of the second limiting plate 23 protruding from the surface of the third guiding plate 24. When the suction cup on the molding device sucks the bottommost planar packaging box in the bin, the existence of the first guiding surface 131, the second guiding surface 231, and the third guiding surface 232 can make the bottommost planar packaging box in the bin be easily drawn out of the bin by the suction cup on the molding device, so as to transfer it to the molding area for processing and molding.

[0057] The position of the first limiting plate 13 on the first side plate 1 can be adjusted, and the position of the second limiting plate 23 on the second side plate 2 can be adjusted. Specifically, refer to Figure 1, a first limiting plate 13 is formed with a first adjusting groove 132. The end of the first adjusting bolt 10 passes through the first adjusting groove 132 and is screwed on the end of the first side plate 1. The second limiting plate 23 is formed with a second adjusting groove 233. The end of the second adjusting bolt 20 passes through the second adjusting groove 233 and is screwed on the end of the second side plate 2. The structures of the two first limiting plates 13 and the four second limiting plates 23 are the same and the installation methods are also the same. When it is necessary to adjust the length of the first limiting plate 13 extending from the surface of the first guide plate 11, loosen the first adjusting bolt 10 and move the first limiting plate 13. The first adjusting bolt 10 moves along the first adjusting groove 132. When the length of the first limiting plate 13 extending from the surface of the first guide plate 11 is adjusted, tighten the first adjusting bolt 10. The adjustment methods of the first limiting plates 13 on the two first side plates 1 are the same. When it is necessary to adjust the length of the second limiting plate 23 extending from the surface of the second guide plate 21, loosen the second adjusting bolt 20 and move the second limiting plate 23. The second adjusting bolt 20 moves along the second adjusting groove 233. When the length of the second limiting plate 23 extending from the surface of the second guide plate 21 is adjusted, tighten the second adjusting bolt 20. When it is necessary to adjust the length of the second limiting plate 23 extending from the surface of the third guide plate 24, loosen the corresponding second adjusting bolt 20 and move the second limiting plate 23. When the length of the second limiting plate 23 extending from the surface of the third guide plate 24 is adjusted, tighten the second adjusting bolt 20. The adjustment of the position of the first limiting plate 13 on the first side plate 1 and the adjustment of the position of the second limiting plate 23 on the second side plate 2 are very convenient. According to the size of the planar packaging box in the bin, the length of the first limiting plate 13 extending from the surface of the first guide plate 11 can be adjusted, the length of the second limiting plate 23 extending from the surface of the second guide plate 21 can be adjusted, and the length of the second limiting plate 23 extending from the surface of the third guide plate 24 can be adjusted, ensuring that the planar packaging box at the bottom of the bin will not easily fall out of the bin.

[0058] Refer to Figure 2, perforations 121 are formed on both of the two first flanges 12. The emitting end of the photoelectric sensor 9 is installed on one of the first side plates 1 and the emitting end of the photoelectric sensor 9 faces the perforation 121 on the first flange 12 of this first side plate 1. The receiving end of the photoelectric sensor 9 is installed on the other first side plate 1 and the receiving end of the photoelectric sensor 9 faces the perforation 121 on the first flange 12 of this first side plate 1. The bin structure of the present utility model can be connected to a conveyor line for conveying flat packaging boxes. In such an application scenario, the bin structure is placed obliquely as a whole, facilitating the conveyor line to automatically convey flat packaging boxes one by one into the space enclosed by the two first side plates 1 and the two second side plates 2, that is, into the bin. When the thickness of the flat packaging boxes in the bin stacks up to the position of the perforation 121 on the first flange 12, the light between the emitting end and the receiving end of the photoelectric sensor 9 is blocked by the flat packaging boxes, triggering the photoelectric sensor 9. The photoelectric sensor 9 generates a switching signal and sends the switching signal to the control component of the conveyor line. The control component controls the conveyor line to stop conveying, ensuring that the topmost flat packaging box in the bin will not overflow from the bin.

[0059] Figure 5 shows schematically Figure 1 the usage state of the bin structure shown.

[0060] Refer to Figures 1 to 5, for the bin structure of the present utility model, flat packaging boxes 30 can be placed in the space enclosed by two first side plates 1 and two second side plates 2. The first limiting plate 13 and the second limiting plate 23 can jointly support the bottommost flat packaging box 30 to prevent the flat packaging box from falling out. Since the relative distance between the two first side plates 1 is adjustable and the relative distance between the two second side plates 2 is adjustable, the size of the space enclosed by the two first side plates 1 and the two second side plates 2 can be adaptively adjusted according to the size of the packaging box, and it can be adapted to packaging boxes of various sizes, thereby reducing the number of bin structures and the overall cost. Moreover, when switching to packaging boxes of different sizes, there is no need to replace the bin structure, and only the relative distance between the two first side plates 1 and the relative distance between the two second side plates 2 need to be adjusted adaptively, which is very convenient. In addition, since the first flanging 12 on the first guiding plate 11 and the second flanging 22 on the second guiding plate 21 are both turned outwards, under the guiding action of the first flanging 12, the second flanging 22, and the inclined surface 241 on the third guiding plate 24, the flat packaging box can be very easily placed into the space enclosed by the two first side plates 1 and the two second side plates 2, that is, the bin, thereby improving the overall forming efficiency of the flat packaging box. At the same time, according to the size of the flat packaging box 30 in the bin, the length of the first limiting plate 13 extending from the surface of the first guiding plate 11 can be adjusted, the length of the second limiting plate 23 extending from the surface of the second guiding plate 21 can be adjusted, and the length of the second limiting plate 23 extending from the surface of the third guiding plate 24 can be adjusted to ensure that the bottommost flat packaging box in the bin will not easily fall out of the bin. When the suction cup on the forming device sucks the bottommost flat packaging box 30 in the bin, due to the existence of the first guiding surface 131, the second guiding surface 231, and the third guiding surface 232, the bottommost flat packaging box 30 in the bin can be easily drawn out of the bin by the suction cup on the forming device, so as to transfer it to the forming area for processing and forming; the bin structure of the present utility model can be connected to the conveying line for conveying flat packaging boxes, and the bin structure is placed obliquely as a whole ( Figure 1 in the state shown). The flat packaging boxes on the conveying line can be smoothly and automatically conveyed into the space enclosed by the two first side plates 1 and the two second side plates 2, that is, the bin.

[0061] The above are only some embodiments of the present utility model, aiming to illustrate the technical means of the present utility model, rather than limiting the technical scope of the present utility model. Any obvious improvements made by those skilled in the art in combination with the existing common knowledge fall within the protection scope of the present utility model.

Claims

1. A bin structure for a packaging box, comprising two first side plates and two second side plates. The two first side plates are arranged opposite to each other, and the two second side plates are arranged opposite to each other. The two first side plates and the two second side plates jointly enclose a space for placing the packaging box. It is characterized in that, the relative distance between the two first side plates is adjustable, the relative distance between the two second side plates is adjustable, first guide plates are provided on both of the two first side plates. The first guide plates are located between the two first side plates, and one end of the first guide plate is provided with a first flanging in an outward-turning shape, at least one second side plate is provided with a second guide plate. The second guide plate is located between the two second side plates, and one end of the second guide plate is provided with a second flanging in an outward-turning shape, a first limiting plate for preventing the packaging box from falling is provided at the end of the first side plate away from the first flanging, a second limiting plate for preventing the packaging box from falling is provided at the end of the second side plate away from the second flanging.

2. The silo structure according to claim 1, characterized in that, It further includes two first mounting plates, a second mounting plate, a third mounting plate, two groups of first guide rods, a second guide rod and a third guide rod, the two first mounting plates are arranged opposite to each other. The two ends of the first guide rod are respectively fixed on the two first mounting plates, and the first side plate is slidably arranged on the first guide rod, the second mounting plate and the third mounting plate are arranged opposite to each other. The second mounting plate is fixed on a group of first guide rods, and the two ends of the third mounting plate are respectively fixed on the two first mounting plates, the second guide rod is inserted through the second mounting plate, and the end of the second guide rod is fixed on one second side plate. The second mounting plate is slidably connected with the second guide rod, the third guide rod is inserted through the third mounting plate, and the end of the third guide rod is fixed on the other second side plate. The third mounting plate is slidably connected with the third guide rod.

3. The silo structure according to claim 2, characterized in that, Two first locking parts are sleeved on the first guide rod. One end of one first locking part is fixed on one first side plate, and one end of the other first locking part is fixed on the other first side plate. Two first clamping parts are provided at the other end of the first locking part. The two first clamping parts clamp the first guide rod, and the free ends of the two first clamping parts are connected by a first bolt, a second locking part is sleeved on the second guide rod. One end of the second locking part is fixed on the second mounting plate. Two second clamping parts are provided at the other end of the second locking part. The two second clamping parts clamp the second guide rod, and the free ends of the two second clamping parts are connected by a second bolt, a third locking part is sleeved on the third guide rod. One end of the third locking part is fixed on the third mounting plate. Two third clamping parts are provided at the other end of the third locking part. The two third clamping parts clamp the third guide rod, and the free ends of the two third clamping parts are connected by a third bolt.

4. The silo structure according to claim 1, wherein, A second guide plate is provided on one second side plate, and a third guide plate is provided on the other second side plate. The third guide plate is located between the two second side plates, and one end of the third guide plate is provided with an inclined surface.

5. The silo structure according to claim 1, characterized in that, It further includes a photoelectric sensor. A perforation is provided on the first flanging. The emitting end of the photoelectric sensor is arranged on one first side plate and the emitting end of the photoelectric sensor faces the perforation on the first flanging of this first side plate. The receiving end of the photoelectric sensor is arranged on the other first side plate and the receiving end of the photoelectric sensor faces the perforation on the first flanging of this first side plate.

6. The silo structure according to claim 1, characterized in that, The end of the first limiting plate extends out from the surface of the first guiding plate, and the end of the second limiting plate extends out from the surface of the second guiding plate.

7. The silo structure according to claim 4, characterized in that, The end of the first limiting plate extends out from the surface of the first guiding plate, the end of one second limiting plate extends out from the surface of the second guiding plate, and the end of the other second limiting plate extends out from the surface of the third guiding plate.

8. The silo structure according to claim 7, characterized in that, A first guiding surface is provided on the end of the first limiting plate that extends out from the surface of the first guiding plate, a second guiding surface is provided on the end of the second limiting plate that extends out from the surface of the second guiding plate, and a third guiding surface is provided on the end of the second limiting plate that extends out from the surface of the third guiding plate.

9. The silo structure according to any one of claims 1 to 8, characterized in that, The position of the first limiting plate on the first side plate can be adjusted, and the position of the second limiting plate on the second side plate can be adjusted.

10. The silo structure according to claim 9, characterized in that, It further includes a first adjusting bolt and a second adjusting bolt. A first adjusting groove is provided on the first limiting plate, and a second adjusting groove is provided on the second limiting plate. The end of the first adjusting bolt passes through the first adjusting groove and is then screwed on the end of the first side plate, and the end of the second adjusting bolt passes through the second adjusting groove and is then screwed on the end of the second side plate.