Multi-size adaptive box expanding device
By using a multi-size adaptive box expansion device, which combines guide blocks, sliding rods, wedge blocks and limiting plates, the problem of traditional packaging boxes being unable to be adjusted is solved, enabling flexible packaging and stable goods, improving transportation efficiency and reducing inventory management complexity.
Patent Information
- Application Number
- CN202520238965.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Traditional packaging boxes have fixed internal space, which cannot be adjusted according to the size of specific items, resulting in low transportation efficiency, waste of resources, and complicated inventory management.
Design a multi-size adaptive box expansion device. Through the combination of guide blocks, sliding rods, wedge blocks, elastic elements and limiting plates, the packaging box can be flexibly adjusted. The combination of magnetic connection and protective cover ensures that the goods are securely packaged.
It enables flexible adjustment of packaging boxes according to the size of the items, reducing resource waste, improving transportation efficiency and the ease of inventory management, and reducing operation time and costs.
Smart Images

Figure CN223791986U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of box expansion equipment, and in particular to a multi-size adaptive box expansion device. Background Technology
[0002] Multi-size adaptive carton expansion units are devices specifically designed to automatically adjust the size of cartons or packaging containers during the packaging process to accommodate products of different sizes and shapes. Compared to traditional fixed-size carton packers, this device can adjust flexibly over a wider range, ensuring that each product is precisely placed into the most suitable package, thereby improving packaging efficiency, saving materials, and reducing the risk of damage during transportation.
[0003] In the modern logistics industry, the internal space of traditional packaging boxes is predetermined and cannot be adjusted according to the size of specific items. This means that for smaller items, there will be a lot of unused space inside the packaging box, resulting in low transportation efficiency and waste of resources. In addition, when dealing with items of various sizes and shapes, using fixed-size packaging boxes requires preparing boxes of various specifications, which increases the complexity of inventory management and operations. Furthermore, frequently changing packaging boxes of different sizes will also increase operation time and costs.
[0004] To address the above issues, a multi-size adaptive expansion box device needs to be designed. Utility Model Content
[0005] To overcome the shortcomings of traditional packaging boxes whose internal space is predetermined and cannot be adjusted according to the size of specific items, this utility model provides a multi-size adaptive box expansion device.
[0006] The technical solution of this utility model is as follows: a multi-size adaptive box expansion device, including a packaging box, a movable box, a first protective cover, a second protective cover, and a fixing component. The movable box is symmetrically slidably connected inside the packaging box. The first protective cover is placed on the packaging box. The second protective cover is symmetrically slidably connected inside the first protective cover. The two second protective covers are in contact with and cooperate with the two movable boxes. The fixing component is provided inside the packaging box.
[0007] Furthermore, the fixing assembly includes a guide block, a sliding rod, a wedge block, an elastic element, and a limiting plate. Guide blocks are connected to the lower sides of both moving boxes, and sliding rods are slidably connected inside both guide blocks. Wedge blocks are connected to opposite sides of the two sliding rods. Two elastic elements are connected between the two wedge blocks and the outer wall of the guide blocks. Limit plates are symmetrically connected to the lower sides of both moving boxes.
[0008] Furthermore, it also includes a first magnetic block, a second magnetic block, a placement seat, a limiting seat, a partition, a locking rod, and a spring. The first magnetic block is installed on the lower side inside the packaging box, and the placement seat is placed inside the packaging box. The second magnetic block is installed on the bottom plate of the placement seat. The second magnetic block is magnetically connected to the first magnetic block. The limiting seat is symmetrically connected to the front and back inside the placement seat. The partition is slidably connected to the middle of the placement seat. The locking rod is symmetrically slidably connected to the upper side of the partition. The locking rod engages with the limiting seat. A spring connects the locking rod and the partition.
[0009] Furthermore, it also includes an anti-slip sleeve, with the handle of the first protective cover fitted with an anti-slip sleeve.
[0010] Furthermore, the inner sides of the four limiting plates are provided with fixing grooves that are consistent with the shape of the wedge blocks.
[0011] Furthermore, the size of the placement base is designed to fit the interior of the packaging box.
[0012] The beneficial effects of this utility model are as follows: by setting up a guide block, sliding rod, wedge block, elastic element and limiting plate, when the wedge block is squeezed, it will move along the guide block, and after the pressure is released, it will reset under the action of the elastic element and be locked into the fixing groove of the limiting plate. This is repeated to achieve a stable locking function, and thus it can be flexibly adjusted according to the different sizes of the items to be packaged without replacing or reconfiguring the packaging box. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0014] Figure 2 This is a cross-sectional view of the first protective cover of this utility model.
[0015] Figure 3 This is a cross-sectional view of the packaging box of this utility model.
[0016] Figure 4 This is a three-dimensional structural diagram of the packaging box, mobile box, and limiting plate of this utility model.
[0017] Figure 5 This is a three-dimensional structural diagram of the guide block, sliding rod, and wedge block of this utility model.
[0018] Figure 6 This is a cross-sectional view of the partition of this utility model.
[0019] Figure 7 This is a three-dimensional structural diagram of the partition, locking rod, and spring components of this utility model.
[0020] In the attached diagram, the following labels are used: 1_packaging box, 2_movable box, 3_first protective cover, 31_anti-slip sleeve, 4_second protective cover, 5_guide block, 6_sliding rod, 7_wedge block, 8_elastic element, 9_limiting plate, 10_first magnetic block, 11_second magnetic block, 12_placement seat, 13_limiting seat, 14_partition, 15_clamping rod, 16_spring. Detailed Implementation
[0021] The preferred technical solution of this utility model will be described in detail below with reference to the accompanying drawings.
[0022] Example: A multi-size adaptive expansion box device, such as Figures 1-7 As shown, the package includes a packaging box 1, a movable box 2, a first protective cover 3, an anti-slip sleeve 31, a second protective cover 4, a first magnetic block 10, a second magnetic block 11, a placement base 12, a limiting base 13, a partition 14, a locking rod 15, a spring 16, and a fixing assembly. The movable box 2 is symmetrically slidably connected to the inside of the packaging box 1. The first protective cover 3 is placed on the packaging box 1. The first protective cover 3 is used to protect the contents of the packaging box 1 and prevent dust from entering. The handle of the first protective cover 3 is fitted with an anti-slip sleeve 31, which provides an anti-slip function. The first protective cover 3 is symmetrically slidably connected to the second protective cover 4 inside. The two second protective covers 4 are in contact with the two movable boxes 2. The lower side of the inner side of the packaging box 1 is equipped with a first magnetic block 10. The packaging box 1 contains a placement seat 12, the size of which is adapted to the inner side of the packaging box 1. The bottom plate of the placement seat 12 is equipped with a second magnetic block 11, which is magnetically connected to the first magnetic block 10. The placement seat 12 is symmetrically connected to the front and back of the inner side of the placement seat 12. The middle of the placement seat 12 is slidably connected to a partition 14. The partition 14 is used for... To separate different items and ensure they do not collide or squeeze each other, a locking rod 15 is symmetrically slidably connected to the upper side of the partition 14. The locking rod 15 engages with the limiting seat 13, ensuring the partition 14 is fixed in position inside the placement seat 12. A spring 16 connects the locking rod 15 and the partition 14. A fixing assembly is provided inside the packaging box 1, including a guide block 5, a sliding rod 6, a wedge block 7, an elastic element 8, and a limiting plate 9. Guide blocks are connected to the lower sides of both movable boxes 2. 5. The guide block 5 is used to guide the sliding rod 6 to move smoothly along the predetermined trajectory. The sliding rod 6 is slidably connected inside both guide blocks 5. The two sliding rods 6 are connected to opposite sides of each other. The wedge block 7 can cooperate with the fixing groove of the limiting plate 9 to achieve the locking function. Two elastic elements 8 are connected between the two wedge blocks 7 and the outer wall of the guide block 5. The two moving boxes 2 are symmetrically connected to the front and rear sides of the lower side. The inner side of the four limiting plates 9 is provided with fixing grooves that are consistent with the shape of the wedge block 7 to ensure that the wedge block 7 can be firmly locked.
[0023] Before packaging items of different sizes, this device is used to adjust the size according to the item's dimensions. The worker removes the first protective cover 3 and the second protective cover 4, then places the item to be packaged inside the packaging box 1. After placement, the worker replaces the first and second protective covers 3 and 4, and then pushes the two movable boxes 2 inwards along the packaging box 1. Each movable box 2 drives the second protective cover 4 connected to it to move inwards along the first protective cover 3. Simultaneously, the two movable boxes 2 move the attached... As a component moves inward, the wedge block 7 moves and contacts the fixing groove of the limiting plate 9, and is squeezed by the fixing groove of the limiting plate 9. This causes the wedge block 7 to drive the sliding rod 6 to move inward along the guide block 5, compressing the elastic element 8. When the wedge block 7 is no longer compressed, under the reset action of the elastic element 8, the wedge block 7 drives the sliding rod 6 to move outward along the guide block 5 until the wedge block 7 is locked into the fixing groove of the limiting plate 9. This process is repeated until the operator can no longer push the two moving boxes 2. At this point, the wedge block 7 is in a locked state. When packaging multiple items, the staff removes the first protective cover 3 and the second protective cover 4 again, and then places the placement seat 12 inside the packaging box 1. After the placement seat 12 is placed, the second magnetic block 11 contacts the first magnetic block 10 and automatically engages, ensuring the placement seat 12 is stable. Then, the partition 14 is placed inside the placement seat 12. After the partition 14 is placed, the staff places the items to be packaged into the movable box 2 on the left. After the items are placed, the staff pulls the two levers 15 to move them inward, and the two springs 16 are compressed. The partition 14 is then pulled to the left along the placement seat 12. When the partition 14 comes into contact with the item, it is no longer pulled. The staff then releases the two locking levers 15. Under the reset action of the two springs 16, the two locking levers 15 move outward into the fixing holes of the corresponding limiting seats 13, thus fixing the partition 14. Next, the staff continues to place other items on the side where no items have been placed. After all items have been placed, the staff puts the first protective cover 3 and the second protective cover 4 back in their original positions to ensure that all items are safely sealed.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A multi-size adaptive expansion box device, characterized in that, It includes a packaging box (1), a mobile box (2), a first protective cover (3), a second protective cover (4), and a fixing component. The mobile box (2) is symmetrically slidably connected inside the packaging box (1). The first protective cover (3) is placed on the packaging box (1). The second protective cover (4) is symmetrically slidably connected inside the first protective cover (3). The two second protective covers (4) are in contact with the two mobile boxes (2). The fixing component is provided inside the packaging box (1).
2. The multi-size adaptive expansion box device according to claim 1, characterized in that, The fixing components include guide blocks (5), sliding rods (6), wedge blocks (7), elastic elements (8) and limiting plates (9). Guide blocks (5) are fixedly connected to the lower side of both moving boxes (2). Sliding rods (6) are slidably connected inside both guide blocks (5). Wedge blocks (7) are fixedly connected to opposite sides of the two sliding rods (6) at the front and rear. Two elastic elements (8) are provided between the two wedge blocks (7) and the outer wall of the guide blocks (5). Limiting plates (9) are fixedly connected symmetrically at the front and rear of the lower side of both moving boxes (2).
3. The multi-size adaptive expansion box device according to claim 2, characterized in that, It also includes a first magnetic block (10), a second magnetic block (11), a placement seat (12), a limiting seat (13), a partition (14), a locking rod (15), and a spring (16). The first magnetic block (10) is provided on the lower side inside the packaging box (1). The placement seat (12) is placed inside the packaging box (1). The second magnetic block (11) is provided on the bottom plate of the placement seat (12). The second magnetic block (11) is magnetically connected to the first magnetic block (10). The limiting seat (13) is fixedly connected symmetrically in front and back inside the placement seat (12). The partition (14) is slidably connected in the middle of the placement seat (12). The locking rod (15) is slidably connected symmetrically in front and back on the upper side of the partition (14). The locking rod (15) is engaged with the limiting seat (13). A spring (16) is provided between the locking rod (15) and the partition (14).
4. The multi-size adaptive expansion box device according to claim 3, characterized in that, It also includes an anti-slip sleeve (31), and the handle of the first protective cover (3) is fitted with an anti-slip sleeve (31).
5. A multi-size adaptive expansion box device according to claim 4, characterized in that, The inner sides of the four limiting plates (9) are provided with fixing grooves that are consistent with the shape of the wedge block (7).
6. A multi-size adaptive expansion box device according to claim 5, characterized in that, The size of the placement base (12) is designed to fit the interior of the packaging box (1).