Multi-layer packaging structure of plastic packaging box

Abstract

The invention discloses a multi-layer packaging structure of a plastic packaging box, which comprises a plurality of blister packaging boxes, and the plurality of blister packaging boxes are stacked and arranged from bottom to top. The plastic uptake packaging box has the beneficial effects that a plurality of plastic uptake packaging boxes with the same size or a plurality of plastic uptake packaging boxes with different sizes are sequentially stacked and combined from bottom to top, the bottom of each plastic uptake packaging box is integrally injection-molded with the connecting base, and the top surface of the box cover is provided with the sunken groove corresponding to the connecting base; on the basis, clamping grooves are formed in the two side faces of each blister packaging box, clamping blocks are correspondingly arranged on the two side faces of the protruding part of the box cover, and the two blister packaging boxes can be clamped by pressing the box cover, so that the connection firmness of the two adjacent blister packaging boxes is improved. And the clamping blocks of the protruding parts are promoted to stretch into the blister packaging box, and the clamping blocks of the protruding parts are connected with the clamping grooves in a clamped mode.

Description

Technical Field

[0001] The present invention relates to the field of plastic products, and more specifically, to a multi-layer packaging structure for a plastic packaging box. Background Art

[0002] Plastic products are mainly formed by heating flat plastic sheet materials until they become soft and then vacuum adsorbing them onto the surface of a mold and cooling. They are widely used in industries such as plastic packaging, lighting, advertising, and decoration.

[0003] Currently, in the packaging field, plastic boxes are often used as packaging containers for food materials such as takeaways, and various food materials are placed in the plastic boxes. The original distribution method of food packaging boxes is generally to place the food ingredients in the plastic packaging box and then pack them in a takeaway packaging bag for convenient distribution by the delivery staff. However, the above plastic packaging box still has the following problems: the takeaway packaging bag has no fixing effect on the plastic packaging box. When multiple plastic packaging boxes of the same size or different sizes are delivered simultaneously, problems such as leakage and tipping are likely to occur, resulting in disadvantages such as poor firmness of connection, high adaptability, and non-recyclability of the packaging structure among multiple packaging boxes.

[0004] In response to the problems in the related art, no effective solution has been proposed yet. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a multi-layer packaging structure for a plastic packaging box, which has the advantages of being easy to stack and assemble, strong firmness, quick loading and unloading, high adaptability, and recyclability, thereby solving the problems in the above background art.

[0006] To achieve the above advantages of stacking and assembling, strong firmness, quick loading and unloading, high adaptability, and recyclability, the specific technical solutions adopted by the present invention are as follows: A multi-layer packaging structure for a plastic packaging box, including a blister packaging box. A plurality of blister packaging boxes are provided, and the plurality of blister packaging boxes are arranged in a stacked manner from bottom to top. A connecting base is integrally provided at the bottom of each blister packaging box, and limiting openings are formed on both side surfaces of the connecting base. A fastening belt is inserted into the limiting openings of the connecting base. The fastening belt is arranged in a U-shaped structure on the surface of the plurality of blister packaging boxes, and a plurality of rectangular openings are equidistantly formed at both ends of the fastening belt. A hook connecting rod is inserted into the rectangular openings at the edges of both ends of the fastening belt, and locking parts in contact with the fastening belt are respectively sleeved and installed at both ends of the hook connecting rod. A box cover is hermetically installed at the opening on the top surface of each blister packaging box, and a concave groove corresponding to the connecting base is provided on the top surface of the box cover. A protruding part is integrally formed at the bottom of the box cover, and clamping blocks are integrally formed on both side surfaces of the protruding part. Clamping grooves are correspondingly formed on both side surfaces inside the blister packaging box for the clamping blocks, and the clamping grooves of the blister packaging box are clamped with the clamping blocks.

[0007] Further, a plurality of triangular teeth are equidistantly arranged on the top surface of the hook connecting rod, and an adjusting column is installed on each of the locking parts at both ends of the hook connecting rod. The bottom of the adjusting column extends into the inner side of the locking part and is connected with a V-shaped block, and the V-shaped block is clamped with one of the triangular teeth on the surface of the hook connecting rod. A spring is sleeved and installed on the surface of the adjusting column, and both ends of the spring respectively abut against the inner side surface of the locking part and the top surface of the V-shaped block.

[0008] Further, two sliding grooves are parallelly formed at the edge of the top surface of the hook connecting rod, and two cushion blocks are attached and connected to the bottom surface of the hook connecting rod. Two sliding blocks for sliding connection with the sliding grooves are arranged on the top surface of the cushion blocks, and both of the cushion blocks on the hook connecting rod are in contact with the top surface of the box cover.

[0009] Further, a latex sealing ring adhesively bonded to the box cover is arranged on the periphery of the protruding part, and the latex sealing ring abuts against the end surface of the blister packaging box.

[0010] Further, a limiting column is integrally injection-molded inside the connecting base, and the limiting column is located between the two limiting openings of the connecting base. A circular hole corresponding to the limiting column is formed in the middle of the fastening belt.

[0011] Further, a plurality of groups of limiting protrusions are symmetrically arranged on the surface of the fastening belt facing the blister packaging box, and each group of limiting protrusions is arranged in a horn-shaped structure and is connected to the box cover of the blister packaging box.

[0012] Further, the cross-section of the clamping block is in a horizontal U-shaped structure, and a chamfer is arranged at one end of the clamping block extending into the inner side of the clamping groove.

[0013] Further, the sliding block is integrally in an L-shaped structure, and a square-shaped sliding part for sliding connection with the sliding groove is arranged on the sliding block.

[0014] Compared with the prior art, the present invention provides a multi-layer packaging structure for a plastic packaging box, which has the following beneficial effects: (1) In the present invention, a plurality of plastic suction packaging boxes of the same size or a plurality of plastic suction packaging boxes of different sizes are stacked and combined in sequence from bottom to top. Since a connecting base is integrally injection-molded at the bottom of each plastic suction packaging box, and a recessed groove is provided on the top surface of the box cover corresponding to the connecting base, the connecting base of one plastic suction packaging box can be embedded inside the box cover of another plastic suction packaging box, increasing the firmness of the connection between two adjacent plastic suction packaging boxes. On this basis, clamping grooves are provided on two side surfaces of the plastic suction packaging box, and clamping blocks are provided on two side surfaces of the protruding part of the box cover corresponding to the clamping grooves. By pressing the box cover, the clamping blocks of the protruding part extend into the plastic suction packaging box, and the clamping blocks of the protruding part are clamped with the clamping grooves. Combined with the latex sealing ring provided at the edge of the bottom surface of the box cover, while ensuring the sealing performance of the plastic suction packaging box, the reliability of the box cover installation is increased.

[0015] (2) In the present invention, a quick-disassembly packaging structure for a plurality of plastic suction packaging boxes is formed by arranging a fastening belt and a hook connecting rod. By passing the fastening belt through the limiting opening at the bottommost plastic suction packaging box, the circular hole in the middle of the fastening belt is connected with the limiting column in the connecting base, so that both ends of the fastening belt are respectively close to two side surfaces of the plastic suction packaging box. Then, the hook connecting rod is inserted into the rectangular openings at both ends of the fastening belt, and the locking members sleeved on both ends of the hook connecting rod are pushed to move towards each other, so that the two locking members are respectively in contact with the fastening belt. At the same time, by pulling the adjusting column on the locking member, the adjusting column is pulled upward to lift the V-shaped block while compressing the spring to contract, making it easy for the locking member to move along the surface of the fastening belt. When the locking member moves to be in contact with the fastening belt, by releasing the pulling of the adjusting column, the spring on the surface of the adjusting column extends, and the V-shaped block is clamped with one of the triangular teeth on the hook connecting rod during the spring extension stage, making the whole formed by the hook connecting rod and the fastening belt be reliably connected with a plurality of plastic suction packaging boxes. Adopting this structure, the connection between the fastening belt and the hook connecting rod has the advantages of quick loading and unloading and recyclability, and has strong environmental protection.

[0016] (3) In the present invention, two cushion blocks are slidably installed on the hook connecting rod. By moving the two cushion blocks towards or away from each other, the sliding blocks at the tops of the two cushion blocks can relatively slide in the sliding grooves provided on the hook connecting rod, so that the distance between the two cushion blocks can meet the positioning requirements of plastic suction packaging boxes of different sizes until the two cushion blocks can respectively keep in contact with the box covers of the plastic suction packaging boxes. Combined with the limiting protrusions arranged in pairs on the fastening belt, the multi-group limiting protrusions arranged in a horn-shaped structure are reliably connected with the box covers of a plurality of plastic suction packaging boxes. Adopting this structure, on the one hand, the compensation for the gap between the hook connecting rod and the topmost plastic suction packaging box can be realized, and on the other hand, it is applicable to the fastening connection of plastic suction packaging boxes of different sizes, with high adaptability. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for use in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional view of the assembled state of multiple blister packaging boxes of the same size according to an embodiment of the present invention; Figure 2 is an exploded view of the blister packaging box; Figure 3 is a cross-sectional view of the blister packaging box; Figure 4 is Figure 1 an enlarged view of the A structure of Figure 5 is a three-dimensional view of the assembled state of multiple blister packaging boxes of different sizes according to an embodiment of the present invention; Figure 6 is a bottom view of the blister packaging box; Figure 7 is a bottom view of the box cover; Figure 8 is a schematic structural diagram of the fastening belt.

[0019] In the figure: 1. Blister packaging box; 2. Box cover; 3. Connection base; 4. Concave groove; 5. Fastening belt; 6. Rectangular opening; 7. Hook connecting rod; 8. Locking member; 9. Pad; 10. Protruding part; 11. Clamping block; 12. Card slot; 13. Limiting opening; 14. Limiting post; 15. Sliding block; 16. Triangular tooth; 17. Slide groove; 18. Limiting protrusion; 19. Adjusting column; 20. V-shaped block; 21. Spring; 22. Latex sealing ring; 23. Round hole. Detailed implementation manners

[0020] To further illustrate each embodiment, the present invention provides accompanying drawings. These accompanying drawings are a part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0021] According to an embodiment of the present invention, a multi-layer packaging structure for a plastic packaging box is provided.

[0022] Now, the present invention will be further described in conjunction with the accompanying drawings and specific implementation manners. As Figure 1-8As shown in the figure, a multi-layer packaging structure of a plastic packaging box according to an embodiment of the present invention includes a plastic suction packaging box 1. There are multiple plastic suction packaging boxes 1, and the multiple plastic suction packaging boxes 1 are stacked and arranged from bottom to top. A connecting base 3 is integrally provided at the bottom of each plastic suction packaging box 1. Limiting openings 13 are provided on both side surfaces of the connecting base 3. A fastening belt 5 is inserted into the limiting opening 13 of the connecting base 3. The fastening belt 5 is arranged in a U-shaped structure on the surface of the multiple plastic suction packaging boxes 1. A number of rectangular openings 6 are equidistantly provided at both ends of the fastening belt 5. A hook connecting rod 7 is inserted into the rectangular opening 6 at the edge of both ends of the fastening belt 5. Locking members 8 in contact with the fastening belt 5 are respectively sleeved and installed at both ends of the hook connecting rod 7. A box cover 2 is hermetically installed at the opening on the top surface of each plastic suction packaging box 1. A concave groove 4 corresponding to the connecting base 3 is provided on the top surface of the box cover 2. A protruding portion 10 is integrally formed at the bottom of the box cover 2. Clamping blocks 11 are integrally formed on both side surfaces of the protruding portion 10. Card slots 12 corresponding to the clamping blocks 11 are provided on both side surfaces inside the plastic suction packaging box 1. The card slots 12 of the plastic suction packaging box 1 are engaged with the clamping blocks 11. On the basis of the above structure, the combined structure composed of the fastening belt 5 and the hook connecting rod 7 can be used as a special packaging tool for delivery personnel. By combining the fastening belt 5 and the hook connecting rod 7, multiple packaging boxes can be quickly fixed to prevent food from spilling out, thereby increasing the favorable rating of delivery personnel. Among them, the material of the fastening belt 5 can be celluloid or wear-resistant rubber belt.

[0023] In one embodiment, a number of triangular teeth 16 are equidistantly provided on the top surface of the hook connecting rod 7. An adjusting column 19 is installed on each of the locking members 8 at both ends of the hook connecting rod 7. The bottom of the adjusting column 19 extends into the inner side of the locking member 8 and is connected to a V-shaped block 20. The V-shaped block 20 is engaged with one of the triangular teeth 16 on the surface of the hook connecting rod 7. A spring 21 is sleeved on the surface of the adjusting column 19. Both ends of the spring 21 are respectively abutted against the inner side surface of the locking member 8 and the top surface of the V-shaped block 20. With this structure, by pulling the adjusting column 19 on the locking member 8, the adjusting column 19 is prompted to lift the V-shaped block 20 upward while compressing the spring 21 to contract, which is conducive to the locking member 8 moving along the surface of the fastening belt 5. When the locking member 8 moves to a suitable position, the clamping and fixing of the locking member 8 can be realized by giving up pulling the adjusting column 19, so as to facilitate the reliable packaging of multiple stacked plastic suction packaging boxes 1.

[0024] In one embodiment, two sliding grooves 17 are parallelly provided at the edge of the top surface of the hook connecting rod 7. Two cushion blocks 9 are attached and connected to the bottom surface of the hook connecting rod 7. Two sliding blocks 15 slidably connected to the sliding grooves 17 are provided on the top surface of the cushion blocks 9. Both of the cushion blocks 9 on the hook connecting rod 7 are in contact with the top surface of the box cover 2. With this structure, it can be suitable for the fastening connection of plastic suction packaging boxes 1 of different sizes, and has a high adaptability.

[0025] In one embodiment, a latex sealing ring 22 bonded to the box cover 2 is provided on the periphery of the raised portion 10, and the latex sealing ring 22 abuts against the end face of the blister packaging box 1. With this structure, it is easy to increase the sealing between the blister packaging box 1 and the box cover 2 to prevent food from spilling.

[0026] In one embodiment, a limiting column 14 is integrally injection molded inside the connecting base 3, and the limiting column 14 is located between the two limiting openings 13 of the connecting base 3. A circular hole 23 is opened in the middle of the fastening belt 5 corresponding to the limiting column 14. With this structure, it is easy to position the fastening belt 5 in the initial stage and to quickly install the fastening belt 5.

[0027] In one embodiment, a plurality of groups of limiting protrusions 18 are symmetrically arranged on one side of the fastening belt 5 facing the blister packaging box 1, and each group of limiting protrusions 18 is arranged in a trumpet-shaped structure, and the limiting protrusions 18 are connected to the box cover 2 of the blister packaging box 1. This structure can meet the fastening needs of multiple stacked blister packaging boxes 1, and the plurality of groups of limiting protrusions 18 arranged in a trumpet-shaped structure can meet the needs of limiting blister packaging boxes 1 of different sizes, and has strong applicability.

[0028] In one embodiment, the cross section of the card block 11 is a horizontal U-shaped structure, and one end of the card block 11 extending to the inner side of the card slot 12 is provided with a chamfer. With this structure, the card block 11 is easy to engage and disengage.

[0029] In one embodiment, the sliding block 15 is L-shaped as a whole, and is provided with a square sliding portion slidably connected to the slide groove 17. With this structure, the position of the cushion block 9 is easily adjusted to meet the packaging requirements of blister packaging boxes 1 of different sizes.

[0030] Working principle: By stacking multiple plastic thermoformed packaging boxes 1 of the same size or multiple plastic thermoformed packaging boxes 1 of different sizes on top of each other in sequence from bottom to top, it is promoted that the connecting base 3 of one plastic thermoformed packaging box 1 is connected to the lid 2 of another plastic thermoformed packaging box 1. On this basis, by passing the fastening belt 5 through the limiting opening 13 at the bottommost plastic thermoformed packaging box 1, it is promoted that the round hole 23 in the middle of the fastening belt 5 is connected to the limiting post 14 inside the connecting base 3, so that both ends of the fastening belt 5 are respectively close to both side surfaces of the plastic thermoformed packaging box 1, and through the limiting protrusions 18 arranged at equal intervals on the fastening belt 5, it is kept in reliable connection with multiple plastic thermoformed packaging boxes 1. Then, the hook link 7 is inserted into the rectangular opening 6 at the edges of both ends of the fastening belt 5, and then the locking members 8 sleeved on both ends of the hook link 7 are pushed to move towards each other, so that the two locking members 8 are respectively in contact with the fastening belt 5. At the same time, by pulling the adjusting post 19 on the locking member 8, it is promoted that while the adjusting post 19 pulls up the V-shaped block 20, the compression spring 21 contracts, which is conducive to the locking member 8 moving along the surface of the fastening belt 5. When the locking member 8 moves to be in contact with the fastening belt 5, by releasing the pulling of the adjusting post 19, it is promoted that the spring 21 on the surface of the adjusting post 19 extends, and the V-shaped block 20 is clamped with one of the triangular teeth 16 on the hook link 7 during the extension stage of the spring 21. Combining with the cushion block 9 slidably installed on the hook link 7, it makes the whole formed by the hook link 7 and the fastening belt 5 be in reliable connection with multiple plastic thermoformed packaging boxes 1. When it is necessary to disassemble multiple plastic thermoformed packaging boxes 1, by pulling the adjusting rod, it is promoted that the V-shaped block 20 disengages from the clamping with the triangular tooth 16, and the hook link 7 and the fastening belt 5 can be separated.

[0031] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-layer packaging structure for a plastic packaging box, characterized in that It includes plastic blister packaging boxes (1). A plurality of the plastic blister packaging boxes (1) are provided and are stacked and arranged from bottom to top. A connecting base (3) is integrally provided at the bottom of each plastic blister packaging box (1). Limiting openings (13) are formed on both side surfaces of the connecting base (3). A fastening belt (5) is inserted into the limiting openings (13) of the connecting base (3). The fastening belt (5) is arranged on the surface of the plurality of plastic blister packaging boxes (1) in a U-shaped structure. A number of rectangular openings (6) are equidistantly formed at both ends of the fastening belt (5). A hook connecting rod (7) is inserted into the rectangular openings (6) at the edges of both ends of the fastening belt (5). Locking members (8) in contact with the fastening belt (5) are respectively sleeved and installed at both ends of the hook connecting rod (7). A box cover (2) is hermetically installed at the opening on the top surface of each plastic blister packaging box (1). A concave groove (4) corresponding to the connecting base (3) is provided on the top surface of the box cover (2). A protruding part (10) is integrally formed at the bottom of the box cover (2). Clamping blocks (11) are integrally formed on both side surfaces of the protruding part (10). Clamping grooves (12) corresponding to the clamping blocks (11) are formed on both side surfaces inside the plastic blister packaging box (1). The clamping grooves (12) of the plastic blister packaging box (1) are clamped with the clamping blocks (11).

2. The multi-layer packaging structure of a plastic packaging box according to claim 1, characterized in that, A number of triangular teeth (16) are equidistantly arranged on the top surface of the hook connecting rod (7). An adjusting column (19) is installed on each of the locking members (8) at both ends of the hook connecting rod (7). The bottom of the adjusting column (19) extends into the inner side of the locking member (8) and is connected with a V-shaped block (20). The V-shaped block (20) is clamped with one of the triangular teeth (16) on the surface of the hook connecting rod (7). A spring (21) is sleeved and installed on the surface of the adjusting column (19). Both ends of the spring (21) are respectively abutted against the inner side surface of the locking member (8) and the top surface of the V-shaped block (20).

3. The multi-layer packaging structure of a plastic packaging box according to claim 1, characterized in that, Two sliding grooves (17) are parallelly formed at the edge of the top surface of the hook connecting rod (7). Two cushion blocks (9) are attached and connected to the bottom surface of the hook connecting rod (7). Two sliding blocks (15) which are slidably connected with the sliding grooves (17) are arranged on the top surface of the cushion blocks (9). The two cushion blocks (9) on the hook connecting rod (7) are both in contact with the top surface of the box cover (2).

4. The multi-layer packaging structure of a plastic packaging box according to claim 1, characterized in that, A latex sealing ring (22) adhesively connected to the box cover (2) is arranged on the periphery of the protruding part (10). The latex sealing ring (22) abuts against the end surface of the plastic blister packaging box (1).

5. The multi-layer packaging structure of a plastic packaging box according to claim 1, characterized in that, A limiting column (14) is integrally injection-molded inside the connecting base (3). The limiting column (14) is located between the two limiting openings (13) of the connecting base (3). A circular hole (23) corresponding to the limiting column (14) is formed in the middle of the fastening belt (5).

6. The multi-layer packaging structure of a plastic packaging box according to claim 1, characterized in that, A plurality of groups of limiting protrusions (18) are symmetrically arranged on the surface of the fastening belt (5) facing the plastic blister packaging box (1). Each group of limiting protrusions (18) is arranged in a horn-shaped structure. The limiting protrusions (18) are connected with the box cover (2) of the plastic blister packaging box (1).

7. The multi-layer packaging structure of a plastic packaging box according to claim 1, characterized in that, The cross-section of the clamping block (11) is in a horizontal U-shaped structure, and a chamfer is provided at one end of the clamping block (11) extending to the inner side of the clamping groove (12).

8. The multi-layer packaging structure of a plastic packaging box according to claim 3, wherein The sliding block (15) is integrally in an L-shaped structure, and a square-shaped sliding part slidably connected to the sliding groove (17) is provided on the sliding block (15).

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