Wine packaging box

By introducing a folding cover and insertion board structure into the liquor packaging box, the anti-counterfeiting buckle is achieved by connecting the pull-belts to achieve the damage of the anti-counterfeiting buckle, the problem of easy damage to the existing liquor packaging box is solved, and a low-cost and safe box cover opening effect is achieved.

CN223132877UActive Publication Date: 2025-07-22CHENGDU YUANHANG PRINTING CO LTD
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Patent Information

Application Number
CN202422387217.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2025-07-22
Estimated Expiration
2034-09-29

AI Technical Summary

Technical Problem

The anti-counterfeiting buckle structure of the existing liquor packaging box is easily damaged, resulting in the inability to open the lid, affecting the safety and cost-effectiveness during transportation.

Method used

A wine packaging box is designed, using a folded cover plate and a plug plate structure. By pulling the belt, connecting the fitting end surface of the plug plate, using a pulling belt to achieve one action to destroy the anti-counterfeiting buckle and open the cover plate, avoiding structural damage caused by direct pulling the small anti-counterfeiting buckle.

Benefits of technology

It realizes a low-cost box lid opening method, avoids damage to the anti-counterfeiting plug buckle, and improves safety and economical during transportation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223132877U_ABST
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Abstract

The utility model belongs to the technical field of food packaging boxes, and discloses a wine packaging box which comprises a box body formed by bonding paperboards and provided with an opening in the front face, a limiting structure used for clamping and limiting a wine bottle is arranged in the box body, and a turnover cover plate capable of being turned over to be opened is arranged at the opening of the box body. The side, facing the opening of the box body, of the turnover cover plate is provided with an insertion plate matched with the opening of the box body to achieve limiting clamping, the insertion plate is provided with an attaching end face abutting against one side of the inner wall of the box body, and the attaching end face is provided with an anti-fake insertion buckle penetrating through the end face and the inner wall of the box body at the same time; a strip-shaped hole is formed in the outer surface of the inserting plate when the cover plate is folded to be buckled with the box body, the portion, provided with the anti-fake inserting buckle, of the attaching end face is connected with a pull belt, and the pull belt is provided with a grabbing end portion penetrating out of the inserting plate from the strip-shaped hole.
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Description

Technical Field

[0001] The utility model belongs to the technical field of packaging boxes, and particularly relates to a liquor packaging box. Background Art

[0002] Existing liquor packaging boxes have various characteristics in structure, which can not only protect wine bottles but also enhance the product image and meet the diverse needs of consumers. Liquor packaging boxes, especially those for white liquor, usually use cardboard as the main material. Cardboard has good strength and stability, which can effectively protect wine bottles from external impacts. In addition, cardboard materials are easy to print and process, and can present a delicate appearance effect. There are mainly two ways to close liquor packaging boxes. One is the lid structure, that is, the box lid and the box body are connected by adhesives or buckles, and the box lid needs to be lifted when opening. The other is the drawer structure, that is, the box body is separated from the box lid, and the box body needs to be pulled out when opening.

[0003] In order to prevent the wine bottle from shaking during transportation, buffer materials such as foam and sponge are usually arranged inside the liquor packaging box to fix the wine bottle and reduce collisions. In addition, the inner lining structure can also be customized according to the shape and size of the wine bottle to ensure the stable placement of the wine bottle. At the same time, some liquor packaging boxes adopt a window design, that is, a transparent window is arranged on the box body, so that consumers can directly see the appearance of the wine bottle. This design can not only show the beauty of the wine bottle but also increase consumers' trust in the product.

[0004] Since the prices of some liquor products are relatively high, in order to prevent them from being replaced or recycled for counterfeiting during sales and transportation, an anti-counterfeiting buckle structure is usually arranged on the existing liquor packaging. This structure generally inserts a one-way movable stud structure through the shell and the lid of the packaging box during the liquor packaging process. It can not only lock the lid to prevent it from being opened casually, but also cannot open the packaging box without destructively pulling out the anti-counterfeiting buckle. However, in order to avoid affecting the overall shape structure of the packaging box, the existing anti-counterfeiting buckle structure is generally small in size and made of plastic material. In use, the situation that the packaging box cannot be opened often occurs because the anti-counterfeiting buckle is broken. Summary of the Utility Model

[0005] In order to solve the problems existing in the prior art, the utility model provides a liquor packaging box. By using the existing pull belt structure set for convenient opening of the lid to realize the destruction and opening process of one action, not only can the external structure of the anti-counterfeiting buckle be reduced to achieve the purpose of cost saving, but also the pull belt itself is not easily damaged and can cooperate to complete the opening of the lid with one action.

[0006] The technical solution adopted by the utility model is as follows:

[0007] In a first aspect, the present utility model provides a liquor packaging box, which includes a box body formed by gluing cardboard and having an opening at the front. A limiting structure for clamping and restricting a wine bottle is provided inside the box body, and a folding cover plate that can be turned over and opened is arranged at the opening of the box body;

[0008] On the side of the folding cover plate facing the opening of the box body, there is an insertion plate that cooperates with the opening of the box body to achieve limiting clamping. The insertion plate has a fitting end face on the side that abuts against the inner wall of the box body, and an anti-counterfeiting insertion buckle that simultaneously penetrates the end face and the inner wall of the box body is arranged on the fitting end face;

[0009] A strip-shaped hole is arranged on the outer surface of the insertion plate when the folding cover plate buckles the box body. A pulling belt is connected to the part of the fitting end face where the anti-counterfeiting insertion buckle is arranged, and the pulling belt has a grasping end that passes out of the insertion plate through the strip-shaped hole.

[0010] It should be noted that the box body and the folding cover plate are two independent structures. The folding cover plate and the box body are made of the same cardboard material, and are attached to one side surface of the box body and folded to buckle the opening of the box body to achieve shielding.

[0011] A wine bottle is placed inside the box body, and the wine bottle is kept in clamping connection with the box body through the limiting structure. The folding cover plate itself only has a rotational connection relationship with the box body, and has a part that can cover the opening of the box body (not limited to complete coverage), but the covered part is outside the opening end face and does not contact the inner wall of the box body. Therefore, in order to achieve the effect of clamping and limiting, an insertion plate structure is arranged and pasted on the inner end face of the folding cover plate. When the folding cover plate buckles with the opening of the box body, the insertion plate can be inserted into the opening end face of the box body, and has a fitting end face that contacts and abuts against the inner wall of the box body. Frictional contact is achieved through the contact part including the fitting end face and the inner wall of the box body, thereby providing a certain clamping and limiting effect.

[0012] Existing liquor packaging boxes are provided with anti-counterfeiting insertion buckles to lock between the box cover and the box body and form a certain limiting effect. After being sold, the purchaser can open the box cover by destroying the anti-counterfeiting insertion buckle or the box body part where the anti-counterfeiting insertion buckle is set. At the same time, since this kind of packaging box is to maintain the consistency of the outer surface, the box cover surface usually does not have a structure that is convenient to pull by hand. In order to facilitate opening the box cover, a pulling belt structure similar to that described in the present application is provided, and the pulling belt structure itself is only used to facilitate pulling the box cover. In the present application, the part of the pulling belt that is convenient for hand grasping is arranged on the outer end face of the insertion plate, and the other end of the pulling belt passes through the insertion plate and is connected to the part of the fitting end face of the insertion plate where the anti-counterfeiting insertion buckle is arranged.

[0013] When the folding cover plate is buckled and fixed with the box body, to open the folding cover plate, it is necessary to pull the anti-counterfeiting insertion buckle. In the present application, it only needs to pull the pulling belt from the outside, so that the fitting end face of the insertion plate and the box body lose the limiting connection, and the folding cover plate can be opened outward with only one action.

[0014] In combination with the first aspect, the present utility model provides a first implementation manner of the first aspect. The plug board includes a fixing part that fits with the folding cover plate. The fitting end face is vertically and elastically connected to the fixing part, and the pulling belt pulls the fitting end face to rotate relative to the fixing part.

[0015] In combination with the first aspect, the present utility model provides a second implementation manner of the first aspect. The fitting end face is provided with a fixing piece that is snap-connected to the anti-counterfeiting plug buckle. The pulling belt is connected to the fixing piece and the pulling belt pulls the fixing piece to separate from the anti-counterfeiting plug buckle.

[0016] In combination with the second implementation manner of the first aspect, the present utility model provides a third implementation manner of the first aspect. The strip-shaped hole has a horizontal gap at the position where it is connected to the fitting end face of the pulling belt, and the horizontal gap is greater than the distance between the position where the pulling belt is connected to the fitting end face and the position where the fitting end face is rotatably connected to the fixing part.

[0017] It should be noted that the fixing part and the fitting end face are in a right-angle connection state. The so-called elastic connection means that the fitting end face is more likely to be forced to rotate under the action of an external force compared to the fixing part. And there is a gap between the connection position of the pulling belt and the fitting end face and the rotation connection position of the fitting end face and the fixing part. In order to ensure that the pulling belt can better pull the fitting end face in the vertical direction of the fixing part, the horizontal gap between the strip-shaped hole and the fitting end face needs to be set large enough, at least greater than the gap between the connection position of the pulling belt and the fitting end face and the rotation connection position of the fitting end face and the fixing part.

[0018] In combination with the third implementation manner of the first aspect, the present utility model provides a fourth implementation manner of the first aspect. The position of the fitting end face through which the anti-counterfeiting plug buckle passes is provided with a hollow and easily tearable part.

[0019] The so-called hollow and easily tearable part means that there is a circular hollow area around the hole through which the anti-counterfeiting plug buckle passes. This hollow area can be regarded as a structurally weak part of the fitting end face, that is, under the action of an external force, this part can be torn along the circular hollow area to form damage, so that the fitting end face and the anti-counterfeiting plug buckle lose the limit connection relationship.

[0020] In combination with the second implementation manner of the first aspect, the present utility model provides a fifth implementation manner of the first aspect. The position of the box body through which the anti-counterfeiting plug buckle passes is provided with a hollow and easily tearable part, and the fixing piece is movably connected to the fitting end face.

[0021] The so-called different settings of the positions of the hollow and easily tearable parts present different effects. Since the pulling belt itself passes through the plug board and is connected to the fitting end face from the inside of the box body, if the hollow and easily tearable part is set on the fitting end face, it can be more easily damaged from the inside through the pulling belt to achieve the effect of losing the limit. However, when the hollow and easily tearable part is set on the box body, the force conduction needs to be carried out through the set fixing piece structure, so as to achieve the effect of losing the limit by damaging the hollow and easily tearable part on the surface of the box body.

[0022] Combined with the second implementation manner of the first aspect, the present utility model provides a sixth implementation manner of the first aspect. A decorative drawstring is provided at the grasping end of the drawstring, and the decorative drawstring is snap-fitted with the strip-shaped hole or the decorative drawstring is snap-fitted and limited with the end face of the insertion plate.

[0023] The beneficial effects of the present utility model are as follows:

[0024] By setting a suitable folding cover plate structure and insertion plate structure, the present utility model forms a special-shaped box cover structure, which has a lower cost compared with the integrally formed special-shaped cardboard structure. At the same time, a drawstring is arranged in cooperation with the fitting end face of the insertion plate and the position of a suitable easily destructible structure, so as to achieve the effect of unlocking and opening the box cover simultaneously with a pulling action, and also avoid the problem that the box cover cannot be opened due to the structural damage caused by directly pulling the relatively small anti-counterfeiting insertion buckle.

[0025] In this embodiment, the decorative drawstring structure provided at the grasping end of the drawstring can hide the drawstring inward during transportation and provide a larger grasping area when it is necessary to open, which is convenient for exerting force to pull. Description of the Drawings

[0026] Figure 1 is the vertical placement plan view of the packaging box in the first implementation manner of the embodiment of the present utility model

[0027] Figure 2 is the vertical placement plan view of the packaging box in the second implementation manner of the embodiment of the present utility model

[0028] Figure 3 is the vertical placement axonometric view of the packaging box in the first implementation manner of the embodiment of the present utility model;

[0029] Figure 4 is the vertical placement axonometric view of the packaging box in the second implementation manner of the embodiment of the present utility model;

[0030] Figure 5 is the vertical placement axonometric view of the opened state of the packaging box in the first implementation manner of the embodiment of the present utility model;

[0031] Figure 6 is the horizontal placement opened plan view of the packaging box in the first implementation manner of the embodiment of the present utility model;

[0032] Figure 7 is the horizontal placement plan view of the packaging box in the first implementation manner of the embodiment of the present utility model;

[0033] Figure 8 is the horizontal placement axonometric view of the packaging box in the first implementation manner of the embodiment of the present utility model;

[0034] Figure 9It is an axonometric view of the horizontally placed and opened packaging box in the first implementation manner of the embodiments of the present utility model;

[0035] Figure 10 It is an axonometric view of the horizontally placed packaging box in the second implementation manner of the embodiments of the present utility model.

[0036] In the figure: 1 - folding cover plate, 2 - box body, 3 - insertion plate, 4 - pulling belt, 5 - strip hole, 6 - decorative draw strip, 7 - hollow easy - pull part. Specific implementation manners

[0037] The following further explains the present utility model in conjunction with the attached drawings and specific embodiments.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application that is claimed, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0040] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] In the description of the present application, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application 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 should not be construed as a limitation of the present application. In addition, in the description of the present application, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0042] In addition, in the description of the present application, if terms such as "horizontal" and "vertical" appear, it does not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0043] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", and "connected" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] Embodiment 1:

[0045] This embodiment discloses a liquor packaging box for placing at least one wine bottle. The entire packaging box is made of cardboard or other lightweight boards, and generally forms a three-dimensional packaging box body 2 structure through cutting and bonding of multiple boards.

[0046] The box body 2 in this embodiment is a cuboid structure, and the front end face is open. A folding cover plate 1 structure for blocking the opening is provided on the outer surface of the box body 2. The folding cover plate 1 includes two rotatably connected parts, namely a fixed part and a folding part. The entire folding cover plate 1 is made of cardboard with the same thickness as the box body 2, and the connection between the fixed part and the folding part is formed by a fold or a connection of a reduced-thickness board, so that it can be bent at a certain angle.

[0047] The fixed part is arranged on the side of the box body 2 and is attached to the surface by adhesive in this embodiment. The connection between the fixed part and the folding part is exactly at the edge of the opening of the box body 2, so that the folding part can be bent and folded over the opening.

[0048] The folding part in this embodiment is arranged outside the box body 2. And in order to achieve a better covering effect, when the folding part is buckled at the opening, it is always outside the opening and realizes contact occlusion by abutting against the edge of the opening. In order to improve the connection stability between the folding part and the opening of the box body 2, an insertion plate 3 structure is provided on the inner side of the folding part. The insertion plate 3 is inserted into the opening and abuts against the inner wall to achieve a certain degree of limiting effect, that is, before the folding part with the insertion plate 3 is buckled at the opening, the insertion plate 3 will be inserted into the opening and contact the inner wall of the opening, thereby forming a certain frictional resistance. After the folding part is completely buckled at the end face of the opening, the limiting is realized through the insertion plate 3, and the buckling stability of the folding part can be maintained without the action of a large external force.

[0049] In order to facilitate opening of the folding cover 1, the existing wine box will be provided with a convenient pulling structure at the corresponding position. At the same time, in order to keep the wine box in a closed state during transportation, an anti-counterfeiting buckle will be provided between the folding cover 1 and the box body 2. This anti-counterfeiting buckle is a disposable structure, which locks the two structures by passing through the box body 2 and the folding cover 1 at the same time. The folding cover 1 can be opened by applying a certain external force to destroy the anti-counterfeiting buckle.

[0050] In this embodiment, a through hole is provided on one side wall of the box body 2 close to the plug plate 3, and a hole is also provided at a corresponding position on the plug plate 3. When the folded cover plate 1 is buckled on the opening of the box body 2, the two holes are aligned and the anti-counterfeiting buckle is inserted.

[0051] A drawstring 4 is connected to the portion of the plug plate 3 where the anti-counterfeit buckle passes through. The other end of the drawstring 4 passes through the plug plate 3 or the folded cover plate 1 upward and forms a grabbing end on the front of the box body 2, which serves as the convenient pulling structure mentioned in the above content.

[0052] In the transport state, the folding cover plate 1 is fixed to the box body 2 by the anti-counterfeiting buckle to maintain the connection state. When in use, by applying external force to pull the drawstring 4, when the anti-counterfeiting buckle is destroyed, the enlarged end of the drawstring 4 retained on the inner side of the folding cover plate 1 presses against the plug plate 3 or the folding cover plate 1, exerting force on the folding cover plate 1 to pull the folding part outward, completing the effect of destroying the anti-counterfeiting buckle and opening the folding cover plate 1 in one action.

[0053] There are many ways to implement the drawstring 4 to destroy the anti-counterfeiting buckle.

[0054] As an implementation method, an easily destructible anti-counterfeiting buckle structure is used, the inner end of which is connected to the end of the drawstring 4, and a certain external force is applied to the grabbing end outside the drawstring 4 to destroy the anti-counterfeiting buckle from the inside.

[0055] As an implementation method, an annular hollow pull-away portion 7 is provided on the plug plate 3 through which the anti-counterfeiting buckle passes, that is, a plurality of annular hollow areas are formed, and the drawstring 4 is in contact with the inner structure of this portion. A certain external force is applied to the grabbing end of the outside of the drawstring 4, which can cause the inner side of the hollow pull-away portion 7 to be completely separated from the plug plate 3, thereby causing the anti-counterfeiting buckle to lose contact with the plug plate 3.

[0056] Reference Figure 1 , 3, in 5, 6 - 9, it can be seen that the folding part does not completely cover the opening, but leaves a space on the side near the anti-counterfeiting socket for arranging the plugboard 3 structure. The plugboard 3 also includes two parts, namely the part that fits the folding part and the fitting end face formed by bending 90 degrees. The fitting end face is provided with through holes for the anti-counterfeiting plug to pass through, and a hollowed - out and easily - pulled part 7 is arranged around the through holes. A strip - shaped hole 5 for the pulling belt 4 to pass through is arranged at the edge of the upper surface of the plugboard 3 near the folding cover plate 1. Refer to Figure 6 In it, the pulling belt 4 has a grasping end part on the outside, and the other part passes through the strip - shaped hole 5 and extends all the way to the lower part of the fitting end face where the hollowed - out and easily - pulled part 7 is arranged.

[0057] Among them, an elastic bending structure is arranged at the connection of the two parts of the plugboard 3, that is, the fitting end face always maintains a state of turning outwards, or maintains a turning angle of at least 90 degrees. In this setting method, once the pulling belt 4 is pulled from the outside, the pulling belt 4 will drive the fitting end face to turn inwards from the lower part. Once the pulling force is too large, the inner end part of the anti - counterfeiting plug will damage the hollowed - out and easily - pulled part 7 arranged on the fitting end face to achieve the effect of losing the limit.

[0058] Furthermore, there is a horizontal gap between the position where the strip - shaped hole 5 is connected to the fitting end face of the pulling belt 4, and the horizontal gap is greater than the distance between the position where the pulling belt 4 is connected to the fitting end face and the position of the fixed part where the fitting end face is rotationally connected.

[0059] As an implementation method, refer to Figure 2 , Figure 4 and Figure 10 , around the through hole on the inner wall of the box body 2 through which the anti - counterfeiting plug passes, a hollowed - out and easily - pulled part 7 is arranged. The pulling belt 4 is also connected to the lower part of the fitting end face. Pulling the pulling belt 4 makes the fitting end face also turn inwards, causing the outer end part of the anti - counterfeiting plug to pull inwards and damage the hollowed - out and easily - pulled part 7 arranged on the surface of the box body 2, and the effect of losing the limit can also be achieved.

[0060] Furthermore, a decorative drawstring 6 is arranged at the grasping end part of the pulling belt 4, and the decorative drawstring 6 is clamped with the strip - shaped hole 5 or the decorative drawstring 6 is clamped and limited with the end face of the plugboard 3.

[0061] The utility model is not limited to the above - mentioned optional implementation methods. Anyone can obtain other various forms of products under the inspiration of the utility model. The above - mentioned specific implementation methods should not be understood as limiting the protection scope of the utility model. The protection scope of the utility model should be defined by the claims, and the description can be used to interpret the claims.

Claims

1. A liquor packaging box, comprising a box body (2) formed by gluing cardboard and having an opening at the front, wherein a limiting structure for clamping and restricting a wine bottle is provided inside the box body (2), and a folding cover plate (1) that can be folded and opened is arranged at the opening of the box body (2); It is characterized in that: On the side of the folding cover plate (1) facing the opening of the box body (2), there is an insertion plate (3) that cooperates with the opening of the box body (2) to achieve limiting clamping. The insertion plate (3) has a fitting end face on the side abutting against the inner wall of the box body (2), and an anti-counterfeiting insertion buckle that passes through the end face and the inner wall of the box body (2) is provided on the fitting end face; A strip-shaped hole (5) is provided on the outer surface of the insertion plate (3) when the folding cover plate (1) closes the box body (2). A pulling belt (4) is connected to the part of the fitting end face where the anti-counterfeiting insertion buckle is arranged, and the pulling belt (4) has a grasping end that passes out of the insertion plate (3) through the strip-shaped hole (5).

2. The wine packaging box according to claim 1, wherein: The insertion plate (3) includes a fixing part that fits with the folding cover plate (1). The fitting end face is elastically connected to the fixing part perpendicularly, and the pulling belt (4) pulls the fitting end face to rotate relative to the fixing part.

3. A liquor packaging box according to claim 1, characterized in that: A fixing piece that is clamped with the anti-counterfeiting insertion buckle is provided on the fitting end face. The pulling belt (4) is connected to the fixing piece, and the fixing piece is separated from the anti-counterfeiting insertion buckle by pulling the pulling belt (4).

4. The wine packaging box according to claim 2, characterized in that: A horizontal gap is provided at the position where the strip-shaped hole (5) is connected to the fitting end face of the pulling belt (4), and the horizontal gap is greater than the distance between the position where the pulling belt (4) is connected to the fitting end face and the position where the fitting end face is rotatably connected to the fixing part.

5. A liquor packaging box according to claim 4, characterized in that: A hollowed-out and easily torn part (7) is provided at the position on the fitting end face where the anti-counterfeiting insertion buckle passes through.

6. The wine packaging box according to claim 3, characterized in that: A hollowed-out and easily torn part (7) is provided at the position on the box body (2) where the anti-counterfeiting insertion buckle passes through, and the fixing piece is movably connected to the fitting end face.

7. The wine packaging box according to claim 3, characterized in that: A decorative drawstring (6) is provided at the grasping end of the pulling belt (4), and the decorative drawstring (6) is clamped with the strip-shaped hole (5) or the decorative drawstring (6) is clamped and limited with the end face of the insertion plate (3).