Packing box made of PP hollow plate material

Abstract

The utility model discloses a packaging box made of PP hollow plates. The packaging box comprises a hollow box body and a box cover arranged at the upper end of the hollow box body. The box cover is composed of a connecting plate and a movable plate, and the lower end of the connecting plate is fixedly connected with the hollow box body; the movable plate is movably connected with the connecting plate through a pin shaft; mounting grooves are formed in the four corners of the bottom of the hollow box body respectively, and a clamping base is arranged in each mounting groove. And clamping heads are respectively arranged at the upper ends of the connecting plate and the movable plate. The clamping head is arranged at the upper end of the box cover, and the clamping seat is arranged at the bottom of the hollow box body, so that convenient stacking between the packaging boxes is realized, and the stacking stability is ensured; by means of the protection corner plates arranged at the four edges of the side edges of the hollow box body, the packaging box can be effectively protected against damage in the carrying and stacking process, various requirements of vegetables, fruits and other objects in the transportation process can be met, and high practical value and popularization prospects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging boxes, in particular to a packaging box made of PP hollow board material. Background Art

[0002] PP hollow board, a material carefully extruded from polypropylene and polyethylene raw materials through a hollow board production line, is given the nickname of "lattice hollow board" due to its unique lattice cross-sectional shape. It is not only a new type of environmentally friendly packaging material, but also shows many advantages during use, such as dust-free, long life, light weight and good toughness, flexible size and low cost. Therefore, PP hollow board packaging boxes equipped with various accessories have found their place in many industries and are used for turnover loading, packaging, storage and transportation of goods.

[0003] However, in the specific field of fruit and vegetable transportation, from loading and unloading to changing the mode of transportation, and then to changing the packaging equipment, every link needs to ensure that the transported fruits and vegetables are kept within a certain temperature range. This puts forward special requirements for the air permeability of the packaging box: it is necessary to avoid the stuffiness caused by long-term closure, and to prevent the fruits and vegetables from drying out due to excessive air permeability; however, the packaging boxes on the current market generally have the problem of unadjustable air permeability, which greatly limits their applicability in practical applications; in addition, the stability and portability of the existing fruit and vegetable packaging boxes during transportation and stacking directly affect the transportation efficiency and the preservation quality of fruits and vegetables; at the same time, the protection of the corners of the four sides of the packaging box is also a factor that cannot be ignored, which is related to the durability and protection of the packaging box in complex environments. Summary of the invention

[0004] The purpose of the utility model is to provide a packaging box made of PP hollow board material to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A packaging box made of PP hollow board material, comprising a hollow box body and a box cover arranged at the upper end of the hollow box body; the box cover is composed of a connecting plate and a movable plate, wherein the lower end of the connecting plate is fixedly connected to the hollow box body; the movable plate and the connecting plate are movably connected through a pin shaft; mounting grooves are respectively provided at the four corners of the bottom of the hollow box body, wherein a clamping seat is provided in each mounting groove; clamping joints are respectively provided on the upper ends of the connecting plate and the movable plate, wherein the clamping joints are adapted to the clamping seats provided at the bottom of the hollow box body stacked above them.

[0007] Preferably, the card connector includes a base plate, wherein the base plate is fixedly connected to the bottom of the mounting groove; two groups of spring beads are symmetrically installed above the base plate, wherein a limit slot adapted to the card connector is provided between the two groups of spring beads.

[0008] Preferably, arc-shaped clamping surfaces are symmetrically provided on both sides of the clamping joint, wherein the arc-shaped clamping surfaces are respectively in contact with the top ends of the spring contact beads.

[0009] Preferably, a buffer pad is provided on the top end of the clamping joint.

[0010] Preferably, ventilation holes are respectively provided on both sides of the hollow box body, wherein a rotating shield is provided in the ventilation hole.

[0011] Preferably, protective corner plates are respectively provided at the four edges of the side of the hollow box body, wherein the protective corner plates are made of polyester rubber or high-elastic sponge.

[0012] Compared with the prior art, the utility model has the following beneficial effects: by using PP hollow board as the material of the packaging box, the utility model not only meets the environmental protection requirements, but also is not easy to be damaged during use and has high durability; by arranging a card joint at the upper end of the box cover and opening a card joint seat at the bottom of the hollow box body, convenient stacking between packaging boxes is realized. When one packaging box is stacked on top of another packaging box, the card joint on the box cover can be conveniently inserted into the card joint seat at the bottom of the lower packaging box to ensure the stability of the stacking. At the same time, the design of the spring contact ball and the limit card slot makes the card joint more secure. The box is firm and not easy to fall off; by opening ventilation holes on both sides of the hollow box body and arranging rotating shields in the ventilation holes, the air permeability of the box can be adjusted according to actual needs, which can not only avoid the stuffiness of fruits and vegetables caused by the long-term closure of the box, but also prevent the fruits and vegetables from drying out due to excessive air permeability, greatly improving the applicability and preservation effect of the box; by arranging protective corner plates at the four edges of the side of the hollow box body, the box can be effectively protected from damage during handling and stacking, which can meet various needs of fruits and vegetables during transportation, and has high practical value and promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front structural schematic diagram of the packaging box of the utility model;

[0014] Figure 2 It is a rear view structural schematic diagram of the packaging box of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the packaging box of the utility model when viewed from above;

[0016] Figure 4 It is a structural schematic diagram of the card connector of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the card connector of the utility model.

[0018] Among them: 1. Hollow box body; 2. Box cover; 201. Connecting plate; 202. Movable plate; 3. Mounting slot; 4. Snap-in seat; 401. Bottom plate; 402. Spring bead; 403. Limiting slot; 5. Snap-in joint; 6. Arc-shaped snap-in surface; 7. Buffer pad; 8. Ventilation hole; 9. Rotating shield; 10. Protective corner plate. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] Please refer to Figures 1 to 5 To achieve the above purpose, the utility model provides the following technical solutions:

[0021] A packaging box made of PP hollow board material, comprising a hollow box body 1 and a box cover 2 arranged on the upper end of the hollow box body 1, wherein the hollow box body 1 is the main part of the packaging box, used for loading and protecting articles; the hollow box body 1 and the box cover 2 are both made of PP hollow board material, which has the advantages of light weight, high strength, corrosion resistance, and easy processing, so that the packaging box made of PP hollow board material not only has sufficient strength and durability, but also has good environmental protection performance; the box cover 2 is composed of a connecting plate 201 and a movable plate 202, wherein the connecting plate 201 is the basic part of the box cover 2, and the lower end of the connecting plate 201 is fixedly connected to the hollow box body 1 to ensure that the box cover 2 is firmly combined with the hollow box body 1; the movable plate 202 is connected by The pin shaft is movably connected to the connecting plate 201. This connection method allows the movable plate 202 to rotate or open and close relative to the connecting plate 201, which is convenient for users to open or close the box cover 2, thereby facilitating the taking and placing of items; the four corners of the bottom of the hollow box body 1 are respectively provided with installation grooves 3, wherein each installation groove 3 is provided with a snap-in seat 4; the upper ends of the connecting plate 201 and the movable plate 202 are respectively provided with snap-in joints 5, wherein the snap-in joints 5 are adapted to the snap-in seats 4 provided at the bottom of the hollow box body 1 stacked above them. When multiple packaging boxes are stacked, the snap-in joints 5 of the upper packaging box will be inserted into the snap-in seats 4 of the lower packaging box to achieve rapid stacking and fixation. This design not only improves work efficiency, but also ensures the stability and safety of stacking.

[0022] See also Figure 4 As an embodiment of the utility model, the card seat 4 includes a bottom plate 401, wherein the bottom plate 401 is fixedly connected to the bottom of the mounting groove 3; two groups of spring beads 402 are symmetrically installed above the bottom plate 401, wherein a limiting card groove 403 adapted to the card joint 5 is provided between the two groups of spring beads 402.

[0023] In the above-described scheme, the bottom plate 401 is the basis of the card seat 4, and the bottom plate 401 is fixedly connected to the bottom of the mounting groove 3, providing a stable support for the entire card seat 4, wherein the design of the bottom plate 401 ensures the close connection between the card seat 4 and the hollow box body 1, and prevents loosening or falling off due to vibration or external force during the stacking process; the spring contact ball 402 is a movable component in the card seat 4, wherein the spring contact ball 402 is symmetrically installed above the bottom plate 401, and the design of the spring contact ball 402 makes it have a certain elasticity and telescopic ability. When the card joint 5 of the upper packaging box approaches the card seat 4, the spring contact ball 402 will be squeezed and contracted inward, so that the card joint 5 can smoothly enter the limit position between the two groups of spring contact beads 402 In the card slot 403; the limiting card slot 403 is the final parking position of the card connector 5 after entering the card seat 4, wherein the shape and size of the limiting card slot 403 are adapted to the card connector 5, ensuring that the card connector 5 can accurately enter and be fixed in the limiting card slot 403; the design of the limiting card slot 403 enables the card connector 5 to have a clear positioning and guiding function during the stacking process, thereby ensuring the stability and safety of the stacking; when the card connector 5 completely enters the limiting card slot 403, the spring contact ball 402 will use its own elasticity to expand outward rapidly, forming a close contact with the card connector 5, thereby preventing the upper packaging box from shaking or sliding during the stacking process; not only does it make the clamping process smoother and more convenient, but it also greatly improves the stability and carrying capacity of the stacking body.

[0024] See also Figure 5 As an embodiment of the utility model, arc-shaped clamping surfaces 6 are symmetrically provided on both sides of the clamping joint 5, wherein the arc-shaped clamping surfaces 6 are respectively abutted against the top of the spring contact ball 402, and a buffer pad 7 is provided on the top of the clamping joint 5.

[0025] In the above-mentioned scheme, the clamping joint 5 is a key component on the packaging box for connecting with the clamping seat 4 of the packaging box below. Its design fully considers the coordination with the clamping seat 4 and the convenience of operation. The two sides of the clamping joint 5 are symmetrically provided with arc-shaped clamping surfaces 6. The design of the arc-shaped clamping surfaces 6 enables the clamping joint 5 to smoothly guide the spring contact ball 402 to retract inward when inserted into the clamping seat 4, thereby reducing the resistance and friction during the clamping process and making the operation smoother; when the clamping joint 5 completely enters the clamping seat 4, the arc-shaped clamping surface 6 abuts against the top of the spring contact ball 402, and the elastic restoring force of the spring contact ball 402 ensures that the clamping joint 5 is firmly fixed in the clamping seat 4, wherein the abutment method of the arc-shaped clamping surface 6 and the spring contact ball 402 ensures The stability of the clamping connection allows the clamping connection to be easily released by applying external force when necessary, which facilitates the disassembly and restacking of the packaging box; the buffer pad 7 arranged on the top of the clamping joint 5 has the main function of providing buffering and shock absorption effects when the clamping joint 5 contacts the clamping seat 4, wherein the buffer pad 7 is usually made of a soft material with a certain elasticity, such as rubber or polyester foam; when the clamping joint 5 contacts the clamping seat 4, the buffer pad 7 can absorb and disperse the impact force, reduce the noise and vibration caused by direct collision, and protect the packaging box and its internal items from damage. The presence of the buffer pad 7 not only improves the stability and safety of the packaging box during the stacking process, but also improves the working environment of the operator, and reduces the discomfort and fatigue caused by noise and vibration.

[0026] Please refer to Figures 1 to 3 As an embodiment of the utility model, ventilation holes 8 are respectively opened on both sides of the hollow box body 1, wherein a rotating shield plate 9 is provided in the ventilation hole 8.

[0027] In the above-described scheme, the ventilation holes 8 opened on both sides of the hollow box body 1 are mainly for promoting air circulation inside and outside the box, so as to adjust the temperature, humidity and other environmental conditions inside the box, which is particularly important for items that need to maintain specific environmental conditions; the position and number of the ventilation holes 8 are usually determined according to the size, purpose and storage requirements of the box to ensure that the air can circulate evenly; the rotating shutter 9 arranged in the ventilation hole 8 is a device for controlling the opening and closing state of the ventilation hole 8, wherein the rotating shutter 9 is usually made of lightweight and durable materials, such as plastic or metal, to ensure that it can be easily opened or closed when needed ; The design of the rotating shutter 9 allows the user to adjust the opening and closing degree of the ventilation holes 8 as needed. When the ventilation volume inside the hollow box body 1 needs to be increased, the rotating shutter 9 can be rotated clockwise to open the ventilation holes 8; when the ventilation volume needs to be reduced or the ventilation holes 8 need to be completely closed, the rotating shutter 9 can be rotated counterclockwise to the closed position; by controlling the opening and closing state of the ventilation holes 8, the rotating shutter 9 can effectively adjust the temperature and humidity conditions inside the box. When it is necessary to maintain constant environmental conditions, the user can adjust the position of the shutter according to actual conditions to ensure that the environmental conditions inside the box meet the requirements for storing items.

[0028] Please refer to Figures 1 to 3 As an embodiment of the utility model, protective corner plates 10 are respectively provided at the four edges of the side of the hollow box body 1, wherein the protective corner plates 10 are made of polyester rubber or high elastic sponge.

[0029] In the above-mentioned scheme, the main purpose of the design of the protective corner plate 10 is to provide additional protection and cushioning for the four sides of the hollow box body 1. The protective corner plate 10 can effectively absorb and disperse the impact force from the outside, reduce the damage to the box body, and in the process of handling or transportation, even if the box body accidentally collides with a hard object, the protective corner plate can also play a buffering role to protect the box body from damage; the protective corner plate 10 can reduce the friction between the box body and the ground or other objects, and reduce the risk of wear on the surface of the box, which helps to keep the appearance of the box body neat and beautiful, and the design of the protective corner plate 10 makes the boxes easier to stack. Increase stability and reduce the risk of collapse or tilting due to unstable center of gravity; the protective corner plate 10 is usually made of polyester rubber or high elastic sponge, both of which have the following characteristics: good wear resistance, can withstand long-term friction and collision, not easy to wear or break; good elasticity, can quickly return to its original state when impacted by external force, reducing damage to the box; strong weather resistance, can adapt to various environmental conditions, such as temperature, humidity and light, and maintain stable performance; by selecting suitable materials and designing a reasonable structure, the protective corner plate 10 can provide effective protection and buffering for the hollow box.

[0030] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A packaging box made of PP hollow board material, comprising a hollow box body (1) and a box cover (2) arranged on the upper end of the hollow box body (1); characterized in that: The box cover (2) is composed of a connecting plate (201) and a movable plate (202), wherein the lower end of the connecting plate (201) is fixedly connected to the hollow box body (1); the movable plate (202) and the connecting plate (201) are movably connected via a pin shaft; mounting grooves (3) are respectively provided at the four corners of the bottom of the hollow box body (1), wherein a clamping seat (4) is provided in each mounting groove (3); and clamping joints (5) are respectively provided at the upper ends of the connecting plate (201) and the movable plate (202).

2. A packaging box made of PP hollow board material according to claim 1, characterized in that: The clamping seat (4) comprises a bottom plate (401), wherein the bottom plate (401) is fixedly connected to the bottom of the installation groove (3); two groups of spring beads (402) are symmetrically installed above the bottom plate (401), wherein a limiting clamping groove (403) is provided between the two groups of spring beads (402).

3. A packaging box made of PP hollow board material according to claim 1, characterized in that: The clamping joint (5) is symmetrically provided with arc-shaped clamping surfaces (6) on both sides, wherein the arc-shaped clamping surfaces (6) are respectively in contact with the top ends of the spring contact beads (402).

4. A packaging box made of PP hollow board material according to claim 3, characterized in that: A buffer pad (7) is provided at the top end of the card joint (5).

5. The packaging box made of PP hollow board material according to claim 1, characterized in that: Ventilation holes (8) are respectively provided on both sides of the hollow box body (1), wherein a rotating shielding plate (9) is provided in the ventilation hole (8).

6. A packaging box made of PP hollow board material according to claim 5, characterized in that: The four sides of the hollow box body (1) are respectively provided with protective corner plates (10), wherein the protective corner plates (10) are made of polyester rubber or high-elasticity sponge.

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