Self-locking type environment-friendly food packaging carton

Abstract

The utility model provides a self-locking type environment-friendly food packaging carton, which relates to the technical field of packaging cartons, and comprises a carton body, a plurality of clamping plates are arranged at the bottom of the carton body, a plurality of cover plates are arranged at the top of the carton body, a supporting device is arranged in the carton body, and the supporting device comprises a supporting plate and a supporting rod. Wherein the supporting plate and the supporting rod are matched with each other to be attached to the side faces, close to the interior of the box body, of the cover plates and support and reinforce the cover plates which are stressed to be sunken towards the interior of the box body, and an intercepting device is arranged at the bottom of the box body. The situation that the box bodies are stacked in the storage or transportation process, the box bodies stacked at the bottom are sunken due to large pressure and extrude food in the box bodies, the food is damaged, and normal storage and selling of the food are affected is reduced, and the transportation and storage safety of the food is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing carton technical field especially relates to a self -locking type environmental protection food packing carton. BACKGROUND

[0002] The packing carton is a box for packing products, and the food packing carton is one of the packing cartons. During food production, the food packing carton is used to pack food, which facilitates food transportation and makes the food have a good appearance.

[0003] The existing self -locking type environmental protection food packing carton is used in the process, and the multiple clamping plates of the bottom of the box body are inserted into each other, the multiple clamping plates are limited to each other and the bottom of the box body is closed, the self -locking fixation of the bottom plate of the box body is reached, and then various environmental protection foods are placed in the box body for storage and transportation.

[0004] However, in order to save space, the box body is placed in a stacked manner during storage or transportation, which may cause the bottom box body to bear a large pressure during transportation or storage, resulting in deformation of the box body and extrusion of the internal food, causing damage to the food and affecting normal storage and sale of the food. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a self -locking type environmental protection food packing carton.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme: a self -locking type environmental protection food packing carton, including the box body, the bottom of the box body is provided with multiple clamping plates, the top of the box body is provided with multiple cover plates, the inside of the box body is provided with a supporting device, wherein the supporting device comprises a supporting plate and a supporting rod, wherein the supporting plate and the supporting rod are matched with the multiple cover plates on the side close to the inside of the box body and are attached to each other and support and reinforce the multiple cover plates which are recessed towards the inside of the box body under stress, the bottom of the box body is provided with an intercepting device, wherein the intercepting device comprises a binding belt, wherein the binding belt is tied to the bottom of the box body to intercept the multiple clamping plates which are protruded outward under stress.

[0007] The effect of the above components is that the multiple clamping plates of the bottom of the box body are inserted into each other, the multiple clamping plates are limited to each other and the bottom of the box body is closed, the self -locking fixation of the bottom of the box body is reached, and then various environmental protection foods are placed in the box body and the opening position of the box body is closed through the multiple cover plates, the food is packaged, and the food is stored and transported conveniently.

[0008] Preferably, the supporting device comprises a rectangular cylinder fixedly connected with the inner wall of the box body, a first rectangular rod slidingly connected with the inner wall of the rectangular cylinder, a supporting plate fixedly connected with the side of the first rectangular rod away from the rectangular cylinder, a plurality of rectangular grooves opened on one side of the supporting plate, a plurality of second rectangular rods slidingly connected with the inner wall of the rectangular grooves, and a supporting rod fixedly connected with the ends of the plurality of second rectangular rods away from the supporting plate, wherein the surface height of the supporting plate is equal to the surface height of the supporting rod, and the surfaces of the supporting plate and the supporting rod are flush with the surfaces of the plurality of cover plates.

[0009] The above-mentioned components achieve the effect that: by setting the supporting device, first manually moving the supporting plate to drive the plurality of second rectangular rods and the supporting rod to move, then driving the first rectangular rod to move, and when the first rectangular rod moves to the position of being completely inserted into the rectangular cylinder, fixing the supporting plate inside the box body, at this time manually moving the supporting rod to drive the plurality of second rectangular rods to move away from the supporting plate along the plurality of rectangular grooves, and when the plurality of second rectangular rods move to the appropriate positions away from the supporting plate, closing the plurality of cover plates to make the surfaces of the supporting rod and the supporting plate flush with the side of the plurality of cover plates close to the inside of the box body, and when the plurality of cover plates are depressed toward the inside of the box body due to external pressure during use, the supporting plate and the supporting rod intercept the plurality of depressed cover plates and the stacked objects above, thereby achieving the support and reinforcement of the cover plates and the inside of the box body, reducing the mutual stacking of the boxes during storage or transportation, preventing the boxes stacked at the bottom from being depressed and squeezed to damage the food inside, and improving the safety of food transportation and storage.

[0010] Preferably, the side of the supporting rod is fixedly connected with a telescopic rod, the moving end of the telescopic rod is fixedly connected with a pressing plate, the surface of the telescopic rod is sleeved with a spring, one end of the spring is fixedly connected with the supporting rod, and the other end of the spring is fixedly connected with the pressing plate.

[0011] The above-mentioned components achieve the effect that: by setting the pressing plate, when the supporting rod moves to the specified position, the spring pushes the pressing plate to move away from the supporting rod under the action of the spring, and when the pressing plate moves to the position of being flush with the surface of the food inside the box body, the pressing plate cooperates with the spring to assist in pushing the food, thereby reducing the shaking of the box during transportation and handling, preventing the food inside the box from being shaken and collided.

[0012] Preferably, the side of the supporting rod is provided with an auxiliary groove, and the inner wall of the auxiliary groove is provided with a plurality of anti-slip protrusions.

[0013] The above-mentioned components achieve the effect that: by setting the auxiliary groove, the hand of a person can be inserted into the auxiliary groove to assist in moving the supporting rod, thereby improving the convenience of manually moving the supporting rod.

[0014] Preferably, one side of the supporting plate is fixedly connected with a supporting rod, and the surface of the supporting rod is attached to the inner wall of the box body.

[0015] The above component achieves the effect that: by setting the supporting rod, the supporting rod can be attached to the inner wall of the box body and assist in supporting the supporting plate, reducing the shaking of the supporting plate when under stress, and improving the stability of the supporting plate.

[0016] Preferably, a plurality of rectangular holes are formed in one side of the supporting plate, a plurality of cylindrical blocks are fixedly connected to one side of the second rectangular rod, and the surfaces of the plurality of cylindrical blocks are respectively in sliding connection with the inner walls of the plurality of rectangular holes.

[0017] The above component achieves the effect that: by setting the rectangular hole and the cylindrical block, when the second rectangular rod moves, the cylindrical block moves, so that the cylindrical block can move to the maximum position inside the rectangular hole and stop and intercept the second rectangular rod, reducing the disengagement of the second rectangular rod from the inside of the rectangular groove during movement.

[0018] Preferably, the intercepting device comprises a connecting block, the connecting block is fixedly connected to one side of the box body close to the clamping plate, the connecting block is fixedly connected with a bandage on one side, the side of the box body away from the connecting block is fixedly connected with a concave frame, the inside of the concave frame is provided with a circular shaft, the other end of the bandage is fixedly connected with the circular shaft, one side of the circular shaft is fixedly connected with a twisting block, the side of the twisting block close to the concave frame is fixedly connected with a positioning rod, a plurality of circular holes are formed in the side of the concave frame close to the twisting block, and the surface size and shape of the positioning rod are adapted to the size and shape of the inner wall of the circular hole.

[0019] The above component achieves the effect that: by setting the limiting device, first manually rotating the twisting block, so that the twisting block drives the positioning rod to rotate, so that the twisting block drives the circular shaft to rotate inside the concave frame, so that the circular shaft is wound by rotating the bandage, when the bandage is wound to the position close to the bottom of the box body The plurality of clamping plates are attached, so that the positioning rod corresponds to the position of the inner wall of any circular hole at this time, manually push the twisting block towards the concave frame at this time, so that the twisting block drives the positioning rod to move towards the concave frame, so that the twisting block pushes the circular shaft to slide inside the concave frame, when the positioning rod moves to the position of inserting into the corresponding circular hole, the twisting block and the circular shaft are limited, so that the circular shaft limits the bandage, so that the bandage is tied on the bottom of the box body to intercept the plurality of clamping plates, achieving the interception and reinforcement of the clamping plate, reducing the situation that the clamping plate protrudes away from the inside of the box body when subjected to a large weight pressure, causing the plurality of clamping plates to separate and causing the food to fall out.

[0020] Preferably, a plurality of anti-skid strips are fixedly connected to the surface of the twisting block, and the plurality of anti-skid strips are arranged at equal distances.

[0021] The effect achieved by the above components is that the anti-skid strip can increase the contact friction between the knob and the hand, and reduce the hand slip when manually rotating the knob.

[0022] Compared with the prior art, the utility model has the advantages and positive effects that:

[0023] In the utility model, the support device can intercept the stacked objects above the recessed cover plate and box body, so that the mutual stacking of the box bodies during storage or transportation is reduced, the box body stacked at the bottom is prevented from being pressed and the food in the box body is prevented from being damaged, the normal storage and sale of the food are ensured, and the transportation and storage safety of the food is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0025] Figure 2 It is a partial structure schematic view of the support rod of the utility model;

[0026] Figure 3 It is a partial structure schematic view of the pressing plate of the utility model;

[0027] Figure 4 It is a partial structure schematic view of the binding belt of the utility model;

[0028] Figure 5 It is an A place enlarged view of the utility model; Figure 4

[0029] Legend: 1, box body; 2, clamping plate; 3, cover plate; 4, support device; 41, rectangular cylinder; 42, first rectangular rod; 43, supporting plate; 44, rectangular groove; 45, rectangular hole; 46, support rod; 47, second rectangular rod; 48, supporting rod; 49, auxiliary groove; 410, cylindrical block; 411, telescopic rod; 412, pressing plate; 413, spring; 5, intercepting device; 51, connecting block; 52, binding belt; 53, concave frame; 54, circular shaft; 55, knob; 56, positioning rod; 57, circular hole; 58, anti-skid strip. DETAILED DESCRIPTION

[0030] Refer to Figures 1-5 ​As shown, the embodiment discloses a self-locking type of environmental protection food packaging paper box, which comprises a box body 1, a plurality of clamping plates 2 arranged at the bottom of the box body 1, a plurality of cover plates 3 arranged at the top of the box body 1, and a supporting device 4 arranged in the box body 1, wherein the supporting device 4 comprises a supporting plate 43 and a supporting rod 48, the supporting plate 43 and the supporting rod 48 are matched with each other and are attached to the side of the plurality of cover plates 3 close to the inside of the box body 1 to support and reinforce the plurality of cover plates 3 which are recessed towards the inside of the box body 1 under stress, and the bottom of the box body 1 is provided with an intercepting device 5, wherein the intercepting device 5 comprises a binding belt 52, the binding belt 52 is tied to the bottom of the box body 1 to intercept the plurality of clamping plates 2 which are protruded outward under stress. First, the plurality of clamping plates 2 at the bottom of the box body 1 are inserted into each other to limit each other and close the bottom of the box body 1, so as to achieve self-locking fixation when the bottom of the box body 1 is closed. Then, various environmental protection foods are put into the box body 1 and the opening position of the box body 1 is closed by the plurality of cover plates 3 to achieve packaging of the foods, which is convenient for storage and transportation of the foods.

[0031] Referring to Figure 2 and Figure 3 As shown, the embodiment discloses that the supporting device 4 comprises a rectangular cylinder 41, the rectangular cylinder 41 is fixedly connected with the inner wall of the box body 1, a first rectangular rod 42 is slidably connected with the inner wall of the rectangular cylinder 41, the supporting plate 43 is fixedly connected with the side of the first rectangular rod 42 away from the rectangular cylinder 41, a plurality of rectangular grooves 44 are formed in one side of the supporting plate 43, a plurality of second rectangular rods 47 are slidably connected with the inner wall of the plurality of rectangular grooves 44, the supporting rod 48 is fixedly connected with the end of the plurality of second rectangular rods 47 away from the supporting plate 43, the surface height of the supporting plate 43 is equal to the surface height of the supporting rod 48, the surfaces of the supporting plate 43 and the supporting rod 48 are attached to the surfaces of the plurality of cover plates 3, by arranging the supporting device 4, first, the supporting plate 43 is manually moved to drive the plurality of second rectangular rods 47 and the supporting rod 48 to move, the supporting plate 43 drives the first rectangular rod 42 to move, when the first rectangular rod 42 is completely inserted into the inside of the rectangular cylinder 41, the supporting plate 43 is fixed in the inside of the box body 1, at this time, the supporting rod 48 is manually moved to drive the plurality of second rectangular rods 47 to move in the plurality of rectangular grooves 44 in the direction away from the supporting plate 43, when the plurality of second rectangular rods 47 are moved to appropriate positions in the direction away from the supporting plate 43, the plurality of cover plates 3 are closed, the surfaces of the supporting rod 48 and the supporting plate 43 are attached to the side of the plurality of cover plates 3 close to the inside of the box body 1, when the plurality of cover plates 3 are recessed towards the inside of the box body 1 under external pressure during use, the supporting plate 43 and the supporting rod 48 intercept the plurality of recessed cover plates 3 and the stacked objects above, thereby achieving support and reinforcement of the cover plates 3 and the inside of the box body 1, which reduces mutual stacking of the box bodies 1 during storage or transportation, prevents the box body 1 stacked at the bottom from being recessed and extruding the foods in the inside of the box body 1 under great pressure, causes damage to the foods and affects normal storage and sale of the foods, and improves the safety of transportation and storage of the foods.

[0032] Referring to Figure 2 and Figure 3 As shown in FIGS. 48, 49, 50 and 51, the embodiment discloses that one side of the supporting rod 48 is fixedly connected with a telescopic rod 411, the moving end of the telescopic rod 411 is fixedly connected with a pressing plate 412, the surface of the telescopic rod 411 is sleeved with a spring 413, one end of the spring 413 is fixedly connected with the supporting rod 48, the other end of the spring 413 is fixedly connected with the pressing plate 412, by arranging the pressing plate 412, when the supporting rod 48 moves to the specified position, under the reaction force of the spring 413, the spring 413 pushes the pressing plate 412 to move away from the supporting rod 48, when the pressing plate 412 moves to the position of being attached to the surface of the food in the box body 1, the pressing plate 412 cooperates with the spring 413 to push the food, reduces the large shaking of the box body 1 in the process of transportation and carrying, causes the food in the box body 1 to vibrate and collide, one side of the supporting rod 48 is provided with an auxiliary slot 49, the inner wall of the auxiliary slot 49 is provided with a plurality of anti-skid protrusions, by arranging the auxiliary slot 49, the staff can insert the hand into the auxiliary slot 49 to assist in moving the supporting rod 48, improves the convenience of manually moving the supporting rod 48.

[0033] Referring to Figure 2 and Figure 3 As shown in FIGS. 48, 49, 50 and 51, the embodiment discloses that one side of the supporting rod 48 is fixedly connected with a telescopic rod 411, the moving end of the telescopic rod 411 is fixedly connected with a pressing plate 412, the surface of the telescopic rod 411 is sleeved with a spring 413, one end of the spring 413 is fixedly connected with the supporting rod 48, the other end of the spring 413 is fixedly connected with the pressing plate 412, by arranging the pressing plate 412, when the supporting rod 48 moves to the specified position, under the reaction force of the spring 413, the spring 413 pushes the pressing plate 412 to move away from the supporting rod 48, when the pressing plate 412 moves to the position of being attached to the surface of the food in the box body 1, the pressing plate 412 cooperates with the spring 413 to push the food, reduces the large shaking of the box body 1 in the process of transportation and carrying, causes the food in the box body 1 to vibrate and collide, one side of the supporting rod 48 is provided with an auxiliary slot 49, the inner wall of the auxiliary slot 49 is provided with a plurality of anti-skid protrusions, by arranging the auxiliary slot 49, the staff can insert the hand into the auxiliary slot 49 to assist in moving the supporting rod 48, improves the convenience of manually moving the supporting rod 48.

[0034] Referring to Figure 4 and Figure 5As shown, the embodiment discloses an intercepting device 5, which comprises a connecting block 51 fixedly connected to the side of the box body 1 close to the card plates 2, a bandage 52 fixedly connected to one side of the connecting block 51, a concave frame 53 fixedly connected to the side of the box body 1 away from the connecting block 51, a circular shaft 54 arranged in the interior of the concave frame 53, the other end of the bandage 52 fixedly connected to the circular shaft 54, a twisting block 55 fixedly connected to one side of the circular shaft 54, a positioning rod 56 fixedly connected to the side of the twisting block 55 close to the concave frame 53, a plurality of circular holes 57 arranged on the side of the concave frame 53 close to the twisting block 55, and the surface size and shape of the positioning rod 56 adapted to the inner wall size and shape of the circular holes 57. By arranging the limiting device, first manually rotating the twisting block 55, so that the twisting block 55 drives the positioning rod 56 to rotate, so that the twisting block 55 drives the circular shaft 54 to rotate along the interior of the concave frame 53, so that the circular shaft 54 winds the bandage 52 by rotating, when the bandage 52 is wound to the position close to the bottom of the box body 1 and the plurality of card plates 2, the positioning rod 56 corresponds to the position of the inner wall of any circular hole 57, at this time manually pushing the twisting block 55 towards the direction close to the concave frame 53, so that the twisting block 55 drives the positioning rod 56 to move towards the direction close to the concave frame 53, so that the twisting block 55 pushes the circular shaft 54 to slide along the interior of the concave frame 53, when the positioning rod 56 moves to the position inserted into the interior of the corresponding circular hole 57, the twisting block 55 and the circular shaft 54 are limited, so that the circular shaft 54 limits the bandage 52, so that the bandage 52 bundles the plurality of card plates 2 at the bottom of the box body 1 to intercept, achieving the interception and reinforcement of the card plates 2, reducing the situation that the card plates 2 protrude away from the interior of the box body 1 when subjected to a large weight pressure, causing the plurality of card plates 2 to separate and leading to food falling out, a plurality of anti-skid strips 58 fixedly connected to the surface of the twisting block 55, and the plurality of anti-skid strips 58 arranged at equal distances. By arranging the anti-skid strips 58, the anti-skid strips 58 can increase the contact friction between the twisting block 55 and the hands, reducing the situation that the hands slip when manually rotating the twisting block 55.

[0035] Working principle: first, the plurality of card plates 2 at the bottom of the box body 1 are inserted into each other, so that the plurality of card plates 2 are limited to each other and close the bottom of the box body 1, achieving self-locking and fixing when the bottom of the box body 1 is closed, then various environmentally friendly foods are put into the box body 1, and the plurality of cover plates 3 are used to close the position of the opening of the box body 1, achieving the packaging of the foods and facilitating the storage and transportation of the foods.

[0036] First, manually move the support plate 43, so that the support plate 43 drives the plurality of second rectangular rods 47 and the support rod 48 to move, so that the support plate 43 drives the first rectangular rod 42 to move, when the first rectangular rod 42 moves to the fully inserted position inside the rectangular cylinder 41, so that the support plate 43 is fixed inside the box body 1, at this time, manually move the support rod 48, so that the support rod 48 drives the plurality of second rectangular rods 47 to move away from the support plate 43 along the inside of the plurality of rectangular grooves 44, respectively, when the plurality of second rectangular rods 47 move away from the support plate 43 to the appropriate position, close the plurality of cover plates 3, so that the surface of the support rod 48 and the support plate 43 is close to the side of the plurality of cover plates 3 close to the inside of the box body 1, when the plurality of cover plates 3 are depressed in the direction of the inside of the box body 1 during use, the support plate 43 and the support rod 48 intercept the depressed plurality of cover plates 3 and the stack above, thereby achieving support and reinforcement of the cover plate 3 and the inside of the box body 1.

[0037] First, manually rotate the knob 55, so that the knob 55 drives the positioning rod 56 to rotate, so that the knob 55 drives the circular shaft 54 to rotate along the inside of the concave frame 53, so that the circular shaft 54 winds the band 52 by rotating, when the band 52 is wound to the position close to the plurality of clamping plates 2 at the bottom of the box body 1, the positioning rod 56 corresponds to the position of the inner wall of any circular hole 57, at this time, manually push the knob 55 towards the concave frame 53, so that the knob 55 drives the positioning rod 56 to move towards the concave frame 53, so that the knob 55 pushes the circular shaft 54 to slide along the inside of the concave frame 53, when the positioning rod 56 moves to the position inserted into the corresponding circular hole 57, the knob 55 and the circular shaft 54 are limited, so that the circular shaft 54 limits the band 52, so that the band 52 is tied at the bottom of the box body 1 to intercept the plurality of clamping plates 2, achieving interception and reinforcement of the clamping plate 2.

[0038] The above is only a preferred embodiment of the present application, not other forms of the present application, any skilled in the art may use the above disclosed technical content to change or modify equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belongs to the protection scope of the present application, in the description of the present application, it is necessary to explain that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A self-locking type environment-friendly food packaging carton comprising a carton body (1), characterized in that: The bottom of the box body (1) is provided with a plurality of clamping plates (2), the top of the box body (1) is provided with a plurality of cover plates (3), the inside of the box body (1) is provided with a supporting device (4), wherein the supporting device (4) comprises a supporting plate (43) and a supporting rod (48), wherein the supporting plate (43) and the supporting rod (48) are matched with the plurality of cover plates (3) and are attached to the side of the box body (1) inside, and the plurality of cover plates (3) are supported and reinforced, the bottom of the box body (1) is provided with an intercepting device (5), wherein the intercepting device (5) comprises a binding belt (52), wherein the binding belt (52) is tied to the bottom of the box body (1) to intercept the plurality of clamping plates (2) which are forced to protrude outward.

2. The self-locking environment-friendly food packaging carton according to claim 1, characterized in that: The supporting device (4) comprises a rectangular cylinder (41), the inner wall of the rectangular cylinder (41) is fixedly connected with the inner wall of the box body (1), the first rectangular rod (42) is slidably connected with the inner wall of the rectangular cylinder (41), the supporting plate (43) is fixedly connected with one side of the first rectangular rod (42) away from the rectangular cylinder (41), a plurality of rectangular grooves (44) are formed in one side of the supporting plate (43), the second rectangular rod (47) is slidably connected with the inner wall of each of the plurality of rectangular grooves (44), the supporting rod (48) is fixedly connected with one end of the second rectangular rod (47) away from the supporting plate (43), the surface height of the supporting plate (43) is equal to the surface height of the supporting rod (48), and the surfaces of the supporting plate (43) and the supporting rod (48) are attached to the surfaces of the plurality of cover plates (3).

3. The self-locking environment-friendly food packaging carton according to claim 2, characterized in that: One side of the supporting rod (48) is fixedly connected with the telescopic rod (411), the movable end of the telescopic rod (411) is fixedly connected with the pressing plate (412), the surface of the telescopic rod (411) is sleeved with the spring (413), one end of the spring (413) is fixedly connected with the supporting rod (48), and the other end of the spring (413) is fixedly connected with the pressing plate (412).

4. The self-locking environment-friendly food packaging carton according to claim 2, characterized in that: One side of the supporting rod (48) is provided with an auxiliary groove (49), and a plurality of anti-skid protrusions are arranged on the inner wall of the auxiliary groove (49).

5. The self-locking environment-friendly food packaging carton according to claim 2, characterized in that: One side of the supporting plate (43) is fixedly connected with the supporting rod (46), and the surface of the supporting rod (46) is attached to the inner wall of the box body (1).

6. The self-locking environment-friendly food packaging carton according to claim 2, characterized in that: A plurality of rectangular holes (45) are formed in one side of the supporting plate (43), one side of each of the plurality of second rectangular rods (47) is fixedly connected with the cylindrical block (410), and the surfaces of the plurality of cylindrical blocks (410) are respectively slidably connected with the inner walls of the plurality of rectangular holes (45).

7. The self-locking environment-friendly food packaging carton according to claim 1, characterized in that: The intercepting device (5) comprises a connecting block (51), which is fixedly connected to the side of the box body (1) close to the card plate (2), one side of the connecting block (51) is fixedly connected with a bandage (52), the side of the box body (1) away from the connecting block (51) is fixedly connected with a concave frame (53), the inside of the concave frame (53) is provided with a round shaft (54), the other end of the bandage (52) is fixedly connected with the round shaft (54), one side of the round shaft (54) is fixedly connected with a twisting block (55), the side of the twisting block (55) close to the concave frame (53) is fixedly connected with a positioning rod (56), a plurality of circular holes (57) are formed in the side of the concave frame (53) close to the twisting block (55), the surface size and shape of the positioning rod (56) are matched with the inner wall size and shape of the circular hole (57).

8. The self-locking environment-friendly food packaging carton according to claim 7, characterized in that: The surface of the twisting block (55) is fixedly connected with a plurality of anti-skid strips (58), and the plurality of anti-skid strips (58) are arranged at equal distances.

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