Corrugated carton with reinforced folded corners

Abstract

The utility model discloses a corrugated carton with reinforced folded corners, which comprises a carton body, the carton body is a rectangular hollow box body, and corner reinforcing components used for reinforcing and supporting the upper and lower corners of the carton body corresponding to the edge positions are vertically arranged at the four vertical edge positions in the carton body. The carton has the beneficial effects that the corner reinforcing assemblies are vertically arranged at the corner positions of the two sides in the carton body, and then the corner reinforcing blocks of the corner reinforcing assemblies are attached to and make contact with the corresponding corners in the carton body, so that the folded corner positions of the carton body can be integrally reinforced; the strength of the corners of the carton body is improved, the situation that the corners are damaged is avoided, meanwhile, the deformation resistance of the carton body is improved, and the situation that the carton body deforms seriously in the using process is avoided.

Description

Technical Field

[0001] The utility model relates to the field of carton auxiliary components, in particular to a corrugated carton with folded corners and reinforced edges. Background Art

[0002] Corrugated paper is a material made from cardboard through a corrugated cardboard machine. It is often used in packaging, protection and transportation. Corrugated paper is light, strong, compression-resistant, heat-insulating and shock-absorbing. Therefore, it is widely used in various packaging boxes, cartons, packaging pads, insulation pads and other products.

[0003] Specifically, in the process of making corrugated paper into corrugated boxes, since the boxes are made by folding, the internal wavy structure of the corrugated paper at the corners of the boxes will be destroyed, causing the corners of the corrugated boxes to have poor strength during actual use and easily damaged. At the same time, since there is no necessary reinforcement of the corners, the corrugated boxes are prone to overall deformation. When the deformation of the corrugated boxes is too severe, the internal products will be broken. Utility Model Content

[0004] The purpose of the utility model is to provide a corrugated cardboard box with corner reinforcement in order to solve the above-mentioned problem. Corner reinforcement components are uprightly arranged at the corners on both sides of the inside of the carton body, and then the corner positions of the carton body can be strengthened as a whole by attaching and contacting the corner reinforcement blocks of the corner reinforcement components to the corresponding corners inside the carton body, which not only improves the strength of the corner positions of the carton body, but also avoids the damage of the corners. See the following description for details.

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

[0006] The utility model provides a corrugated paper box with corner reinforcement, comprising a paper box body, wherein the paper box body is a rectangular hollow box body, and four vertical edge positions inside the paper box body are vertically provided with edge reinforcement components for reinforcing and supporting the upper and lower corners of the corresponding edge positions of the paper box body;

[0007] The corner reinforcement components at both sides of the front and the back are detachably combined together via a combined connection component, so as to limit the distance and provide lateral support to the corner reinforcement components at both sides inside the carton body via the combined connection component.

[0008] Preferably, the corner reinforcement components include corner reinforcement blocks and middle plates, each of the corner reinforcement components has two corner reinforcement blocks, which are respectively attached to the upper and lower corners corresponding to the edge positions of the carton body, the top surfaces of the upper and lower corner reinforcement blocks are vertically extended and fixed with extension plates, the middle plates are parallelly arranged on the inner sides of the upper and lower corresponding extension plates, the middle plates are vertically opened with adjustment grooves, and the adjustment grooves are all through grooves in the horizontal direction, the upper and lower extension plates are laterally fixed with studs on the end faces close to the middle plates, the upper and lower studs are located in the parts where the upper and lower extension plates are close to each other, and the studs pass through the corresponding adjustment grooves in a transverse sliding fit, the parts of the studs extending out of the corresponding adjustment grooves are coaxially meshed with locking nuts, and the locking nuts can be pressed against the corresponding surfaces of the middle plates.

[0009] Preferably, the extension plate and the middle plate are both rectangular long strips, and the adjustment grooves are both waist-shaped long grooves.

[0010] Preferably, guide posts are transversely fixed to the extension plates at positions corresponding to the sides of the studs, and the guide posts pass through the corresponding adjustment slots in a transverse sliding fit.

[0011] Preferably, the locking nut is a hand-tightened knurled nut, and the outer diameter of the locking nut is larger than the longitudinal slot width of the adjustment slot.

[0012] Preferably, the corner reinforcement blocks are each made by splicing three rectangular plates perpendicular to each other, and the three rectangular plates of the corner reinforcement blocks correspond to three adjacent surfaces of the corresponding corner positions and are in contact with each other.

[0013] Preferably, the combined connection components include a sleeve and a threaded guide rod, the sleeve is laterally arranged between the corner reinforcement blocks at both sides of the bottom and is open at both ends, the threaded guide rod is laterally inserted into both ends of the sleeve in a coaxial sliding fit, and the outer ends of the threaded guide rods at both sides that are away from each other are detachably connected to the corresponding corner reinforcement blocks through connecting sleeves, and the parts of the threaded guide rods at both sides that extend out of the outer ends of the sleeve are coaxially engaged with limiting nuts.

[0014] Preferably, the sleeves are hollow sleeves with both ends open, and the total length of the two threaded guide rods is greater than the length of the corresponding sleeves.

[0015] Preferably, the connecting sleeves are welded and fixed on the inner end faces of the corresponding corner reinforcement blocks, and the threaded guide rods are combined and connected with the corresponding connecting sleeves by threaded fitting.

[0016] The corrugated cardboard box with the above-mentioned corner reinforcement is adopted. Specifically, during the use of the carton body, the corner reinforcement components are uprightly arranged at the corner positions on both sides of the interior of the carton body, and the corner reinforcement components are uprightly arranged along the corresponding vertical edges inside the carton body, and the corner reinforcement blocks are respectively in contact with the three adjacent surfaces of the corresponding corner positions and each other. Then, the corner positions of the carton body can be strengthened as a whole by the way that the corner reinforcement blocks of the corner reinforcement components are attached to and contact the corresponding corners inside the carton body, which not only improves the strength of the corner positions of the carton body and avoids the damage of the corners, but also improves the deformation resistance of the carton body and avoids the carton body. In the process of using, serious deformation occurs. In the process of placing the corner reinforcement assembly inside the carton body, the corner reinforcement block at the bottom is first placed in contact with the corresponding corner position at the bottom, and then the locking nuts corresponding to the two studs are loosened. The studs can slide vertically along the adjustment grooves and tighten the locking nuts to press them against the surface of the middle plate when the adjustment is completed, so that the overall length of the middle plate and the extension plates on both sides can be adjusted. Then, the corner reinforcement block at the upper position can be adjusted to be flush with the corresponding corner position at the upper portion, so that the distance between the corner reinforcement blocks at the upper and lower positions of the corner reinforcement assembly can be adjusted, ensuring that the corners at the upper and lower positions are fixed. The reinforcing blocks can respectively rest against the upper and lower corners of the same vertical edge of the carton body, thereby improving the versatility and adaptability of the corner reinforcement assembly, and can be adapted to carton bodies of different sizes for corner reinforcement. Specifically, the corner reinforcement assemblies at the front and rear sides are detachably connected together by the combined connecting assembly, and then the distance between the two corner reinforcement assemblies can be adjusted by sliding the threaded guide rods on both sides of the combined connecting assembly along the sleeve transversely. When the corner reinforcement assemblies at the two sides are respectively in contact with the corresponding corners at the two sides by sliding the threaded guide rods along the sleeve transversely, the corner reinforcement assemblies are secured. The corner reinforcement assembly and the threaded guide rod are held stationary and the limit nuts are screwed and pressed against the ends corresponding to the sleeves, so as to lock the combined connection assembly in a lateral limit support state for the corner reinforcement assemblies at both sides during use in the carton body, so that the two corner reinforcement assemblies can respectively contact the corners corresponding to the two side positions and limit the distance through the combined connection assembly, thereby realizing lateral support for the corner reinforcement assemblies on both sides, further improving the deformation resistance of the carton body, and at the same time, because the overall length of the combined connection assembly is adjustable, the versatility and adaptability of the combined connection assembly are improved, and it can adapt to the corner reinforcement of carton bodies of different sizes.Subsequently, when the corner reinforcement assembly and the combined connection assembly are used, the limiting nut is screwed away from the sleeve, and then the distance between the corner reinforcement assemblies on both sides is reduced by sliding the threaded guide rod laterally along the sleeve, and then the corner reinforcement assembly and the combined connection assembly are removed from the carton body. Thereafter, the threaded guide rod is laterally disengaged from the sleeve and the threaded guide rod and the connecting sleeve are separated from each other, so that the corner reinforcement assemblies at the two sides can be separated from each other. The corner reinforcement assemblies at the two sides only need to be combined with the connecting sleeve and the sleeve respectively at both ends, so that the corner reinforcement assemblies at the two sides can be combined together. The separation and combination of the corner reinforcement assemblies at the two sides are simple and easy to operate, which is convenient for use in the carton body for corner reinforcement after combination, and convenient for separation and storage after use.

[0017] The beneficial effects are as follows: 1. The utility model is provided with corner reinforcement components at both sides of the inner corner of the carton body, and then the corner reinforcement blocks of the corner reinforcement components are attached to the corresponding corners of the inner side of the carton body to strengthen the folded corners of the carton body as a whole, which not only improves the strength of the corners of the carton body and avoids the damage of the corners, but also improves the deformation resistance of the carton body and avoids the serious deformation of the carton body during use;

[0018] 2. The overall length of the middle plate and the extension plates on both sides can be adjusted by sliding the stud vertically along the adjustment groove and tightening the locking nut, and then the distance between the corner reinforcement blocks at the upper and lower positions of the corner reinforcement assembly can be adjusted, ensuring that the corner reinforcement blocks at the upper and lower positions can respectively rest against the upper and lower corners of the same vertical edge of the carton body, while also improving the versatility and adaptability of the corner reinforcement assembly, and can be used to reinforce the corners of carton bodies of different sizes;

[0019] 3. The corner reinforcement components at both sides are detachably connected together through a combined connection component, and then the distance between the two corner reinforcement components can be adjusted by sliding the threaded guide rods on both sides of the combined connection component along the sleeve laterally, so that the two corner reinforcement components can contact the corresponding corners at both sides respectively and limit the distance through the combined connection component, thereby realizing the lateral support of the corner reinforcement components on both sides and further improving the anti-deformation ability of the carton body;

[0020] 4. Since the overall length of the combined connection component is adjustable, the versatility and adaptability of the combined connection component are improved, and it can be used to reinforce the corners of cartons of different sizes;

[0021] 5. After removing the corner reinforcement components and the combined connecting components from the carton body, the corner reinforcement components on both sides can be separated from each other by means of the threaded guide rod being laterally disengaged from the sleeve and the threaded guide rod and the connecting sleeve being separated from each other. The corner reinforcement components on both sides can be combined together by only combining the two ends of the threaded guide rod with the connecting sleeve and the sleeve respectively. The separation and combination of the corner reinforcement components on both sides are simple and easy to operate, which is convenient for use in the carton body for corner reinforcement after combination and convenient for separation and storage after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is the overall axonometric diagram of the utility model. Figure 1 ;

[0024] Figure 2 This is the overall axonometric diagram of the utility model. Figure 2 ;

[0025] Figure 3 This utility model Figure 1 Cross-section diagram of Figure 1 ;

[0026] Figure 4 This utility model Figure 3 A local enlarged view of point A;

[0027] Figure 5 This utility model Figure 3 A partial enlarged view of point B;

[0028] Figure 6 This utility model Figure 1 Cross-section diagram of Figure 2 ;

[0029] Figure 7 This utility model Figure 6 A partial enlarged view of point C;

[0030] Figure 8 This utility model Figure 1 Cross-section diagram of Figure 3 ;

[0031] Fig. 9 This utility model Figure 8 A partial enlarged view of point D;

[0032] Fig.10 This utility model Figure 1 The front view of the external image;

[0033] Fig.11 This utility model Figure 1 The left external view of

[0034] Fig.12 This utility model Figure 1 The right external view of

[0035] Fig.13 This utility model Figure 1 External view from above.

[0036] The following are the descriptions of the reference numerals:

[0037] 1. Carton body; 2. Corner reinforcement assembly; 201. Locking nut; 202. Stud; 203. Guide column; 204. Middle plate; 205. Extension plate; 206. Adjustment slot; 207. Corner reinforcement block; 3. Combined connection assembly; 301. Threaded guide rod; 302. Limit nut; 303. Sleeve; 304. Connecting sleeve. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0039] See also Figure 1-Figure 13As shown, the utility model provides a corrugated paper box with corner reinforcement, including a paper box body 1, the paper box body 1 is a rectangular hollow box, and the four vertical edge positions inside the paper box body 1 are vertically provided with edge reinforcement components 2 for reinforcing and supporting the upper and lower corners of the corresponding edge positions of the paper box body 1. Specifically, the edge reinforcement components 2 include edge reinforcement blocks 207 and an intermediate plate 204. The number of edge reinforcement blocks 207 of each edge reinforcement component 2 is two and they are respectively attached to the paper box body At the upper and lower corner positions corresponding to the edge positions of the body 1, the top surfaces of the upper and lower corner reinforcement blocks 207 are vertically extended and fixed with extension plates 205, the middle plates 204 are parallelly arranged on the inner sides of the upper and lower corresponding extension plates 205, the middle plates 204 are vertically opened with adjustment grooves 206, and the adjustment grooves 206 are all through grooves in the horizontal direction, the upper and lower extension plates 205 are horizontally fixed with studs 202 on the end faces close to the middle plates 204, and the upper and lower studs 202 are located at the upper and lower extension plates 205 close to each other. The studs 202 are arranged close to each other, and the studs 202 pass through the corresponding adjustment slots 206 in a transverse sliding manner. The parts of the studs 202 extending out of the corresponding adjustment slots 206 are coaxially meshed with locking nuts 201, and the locking nuts 201 can be pressed against the surface of the corresponding middle plate 204. The purpose of this arrangement is to firstly strengthen the corner position of the carton body 1 as a whole by attaching the corner reinforcement blocks 207 of the corner reinforcement assembly 2 to the corresponding corners inside the carton body 1, thereby improving the carton body 1. The strength of the corners of the main body 1 is improved, and the deformation resistance of the carton body 1 is improved. The stud 202 slides vertically along the adjustment groove 206 and tightens the locking nut 201 to adjust the overall length of the middle plate 204 and the two side extension plates 205. Then, the distance between the corner reinforcement blocks 207 at the upper and lower positions of the corner reinforcement assembly 2 can be adjusted, ensuring that the corner reinforcement blocks 207 at the upper and lower positions can respectively rest on the upper and lower corners of the same vertical edge of the carton body 1.

[0040] See also Figure 2 , Figure 3 , Figure 5 , Figure 8 and Fig. 9As shown, the corner reinforcement components 2 at the front and rear sides are detachably combined together through the combined connection components 3, so as to limit the distance and laterally support the corner reinforcement components 2 at the two sides through the combined connection components 3 inside the carton body 1. Specifically, the combined connection components 3 include sleeves 303 and threaded guide rods 301. The sleeves 303 are laterally arranged between the corner reinforcement blocks 207 at the two sides of the bottom and are open at both ends. The two ends of the sleeves 303 are laterally interspersed with threaded guide rods 301 in a coaxial sliding manner, and the outer ends of the threaded guide rods 301 at the two sides are detachably connected to the corresponding corner reinforcement blocks 207 through connecting sleeves 304. The parts of the threaded guide rods 301 at the two sides extending out of the outer ends of the sleeves 303 are coaxially engaged with the limiting nuts 302. The advantage of such a configuration is that, first, the two sides of the combined connection components 3 are connected The threaded guide rod 301 can adjust the distance between the two corner reinforcement components 2 by sliding horizontally along the sleeve 303, so that the two corner reinforcement components 2 can respectively contact the corresponding corners at the two side positions and limit the distance through the combined connection component 3. At the same time, since the overall length of the combined connection component 3 is adjustable, the versatility and adaptability of the combined connection component 3 are improved. Moreover, after the corner reinforcement components 2 and the combined connection component 3 are removed from the carton body 1, the corner reinforcement components 2 at the two side positions can be separated from each other by the threaded guide rod 301 being laterally disengaged from the sleeve 303 and the threaded guide rod 301 and the connecting sleeve 304 being separated from each other. The corner reinforcement components 2 at the two side positions can be combined together by only combining the two ends of the threaded guide rod 301 with the connecting sleeve 304 and the sleeve 303 respectively. The separation and combination of the corner reinforcement components 2 at the two side positions are simple and easy to operate.

[0041] See also Figure 2-Figure 7 As shown, the corner reinforcement component 2 is optimized as follows. First, the extension plate 205 and the middle plate 204 are both rectangular long strips, and the adjustment grooves 206 are both waist-shaped long grooves. This arrangement allows the adjustment grooves 206 to have a sufficiently wide adjustment range, so that the distance between the corner reinforcement blocks 207 at the upper and lower positions has a larger range of adjustment space. At the same time, the extension plates 205 are laterally fixed with guide columns 203 at the positions corresponding to the sides of the studs 202, and the guide columns 203 pass through the corresponding adjustment grooves 206 in a transverse sliding manner. Due to this arrangement, during the sliding movement of the studs 202 along the adjustment grooves 206, the sliding movement of the guide columns 203 along the adjustment grooves 206 can prevent the studs 202 from rotating and dislocating, and then prevent the extension plates 205 and the middle plates 204 from being dislocated and misaligned during the adjustment process, and at the same time prevent the corner reinforcement blocks 207 at the upper and lower positions from deviating.

[0042] Further optionally, the locking nut 201 is a hand-tightened knurled nut, and the outer diameter of the locking nut 201 is larger than the longitudinal slot width of the adjustment slot 206, so that the locking nut 201 can be tightened or loosened by direct hand-tightening, and it is convenient to ensure that the locking nut 201 can be pressed against the surface of the middle plate 204. As for the optimization of the corner reinforcement block 207, the corner reinforcement block 207 is made of three rectangular plates perpendicular to each other, and the three rectangular plates of the corner reinforcement block 207 correspond to the three adjacent faces of the corresponding corner position and are in contact with each other. Such a setting makes it easy for the corner reinforcement block 207 to be stably attached to the corresponding corner position and can be stable and not move during the setting process of the corresponding corner position, and it is also ensured that the design style of the corner reinforcement block 207 can reinforce and support the corner position.

[0043] See also Figure 8-Figure 9 As shown, the combined connection component 3 is optimized as follows: first, the sleeves 303 are hollow sleeves with open ends, and the total length of the two threaded guide rods 301 is greater than the length of the corresponding sleeves 303. This arrangement facilitates the threaded guide rods 301 to smoothly slide along the sleeves 303 to extend and retract, and at the same time, when the inner ends of the threaded guide rods 301 at both sides are close to each other, the outer ends of the threaded guide rods 301 at both sides can smoothly expose a part of the sleeves 303 and facilitate smooth removal. Further, optionally, the connecting sleeves 304 are welded and fixed to the inner end faces of the corresponding corner reinforcement blocks 207, and the threaded guide rods 301 are combined and connected with the corresponding connecting sleeves 304 by threaded matching. The purpose of this arrangement is to facilitate the fixing and separation of the threaded guide rods 301 and the connecting sleeves 304 by twisting the threaded guide rods 301, and then complete the rapid combination and separation of the threaded guide rods 301 and the corner reinforcement blocks 207.

[0044] With the above structure, specifically during the use of the carton body 1, corner reinforcement components 2 are vertically arranged at the corner positions on both sides of the interior of the carton body 1, and the corner reinforcement components 2 are vertically arranged along the corresponding vertical edges inside the carton body 1, and the corner reinforcement blocks 207 are respectively in contact with the three adjacent surfaces of the corresponding corner positions and each other, and then the corner reinforcement blocks 207 of the corner reinforcement components 2 are attached to and contact the corresponding corners inside the carton body 1. The folded corner position of the carton body 1 can be strengthened as a whole, which not only improves the strength of the corner positions of the carton body 1 and avoids the damage of the corners, but also improves the deformation resistance of the carton body 1 and avoids the serious deformation of the carton body 1 during use. During the process of placing the corner reinforcement component 2 inside the carton body 1, the corner reinforcement block 207 at the bottom is first placed in contact with the corresponding corner position at the bottom, and then the locking nuts 201 corresponding to the two studs 202 are loosened. The studs 202 slide vertically along the adjustment grooves 206 and are tightened to press against the surface of the middle plate 204 by tightening the locking nuts 201 when the adjustment is completed. The overall length of the middle plate 204 and the two side extension plates 205 can be adjusted, and then the corner reinforcement block 207 at the upper position can be adjusted to be flush with the corresponding corner position at the upper portion, so that the distance between the corner reinforcement blocks 207 at the upper and lower positions of the corner reinforcement component 2 can be adjusted, ensuring that the corner reinforcement blocks 207 at the upper and lower positions can respectively rest on the paper The upper and lower corner positions of the same vertical edge of the box body 1 also improve the versatility and adaptability of the corner reinforcement component 2, and can be adapted to the corner reinforcement of carton bodies 1 of different sizes. Specifically, the corner reinforcement components 2 at the front and rear sides are detachably connected together by a combined connection component 3, and then the distance between the two corner reinforcement components 2 can be adjusted by sliding the threaded guide rods 301 on both sides of the combined connection component 3 laterally along the sleeve 303. When the corner reinforcement components 2 at the two sides are respectively contacted with the corresponding corners at the two sides by sliding the threaded guide rods 301 laterally along the sleeve 303, the corner reinforcement components 2 and the threaded guide rods 301 are kept in contact with the corresponding corners at the two sides. The limit nuts 302 are not moved and are screwed and pressed against the corresponding ends of the sleeves 303 to lock the combined connection component 3 in the lateral limit support state of the corner reinforcement components 2 at the two sides during use in the carton body 1, so that the two corner reinforcement components 2 can respectively contact the corresponding corners at the two sides and limit the distance through the combined connection component 3, thereby realizing lateral support for the corner reinforcement components 2 on both sides, further improving the deformation resistance of the carton body 1. At the same time, since the overall length of the combined connection component 3 is adjustable, the versatility and adaptability of the combined connection component 3 are improved, and it can adapt to the corner reinforcement of carton bodies 1 of different sizes. When the corner reinforcement component 2 and the combined connection component 3 are used up,The limiting nut 302 is screwed away from the sleeve 303, and then the distance between the corner reinforcement components 2 on both sides is reduced by sliding the threaded guide rod 301 laterally along the sleeve 303, and then the corner reinforcement components 2 and the combined connection components 3 are removed from the carton body 1. After that, the threaded guide rod 301 is laterally disengaged from the sleeve 303 and the threaded guide rod 301 and the connecting sleeve 304 are separated from each other to separate the corner reinforcement components 2 on both sides. The corner reinforcement components 2 on both sides can be combined together by combining the two ends of the threaded guide rod 301 with the connecting sleeve 304 and the sleeve 303 respectively. The separation and combination of the corner reinforcement components 2 on both sides are simple and easy to operate, which is convenient for use in the carton body 1 for corner reinforcement after combination, and convenient for separation and storage after use.

[0045] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A corrugated paper box with corner reinforcement, comprising a paper box body (1), characterized in that: The carton body (1) is a rectangular hollow box, and corner reinforcement components (2) are erected at four vertical edge positions inside the carton body (1) for reinforcing and supporting the upper and lower corners of the corresponding edge positions of the carton body (1); The corner reinforcement components (2) at the front and rear sides are detachably assembled together via a combined connection component (3), so as to limit the distance and provide lateral support to the corner reinforcement components (2) at the two side positions inside the carton body (1) via the combined connection component (3).

2. A corrugated paper box with corner reinforcement according to claim 1, characterized in that: The corner reinforcement components (2) each include a corner reinforcement block (207) and an intermediate plate (204). Each corner reinforcement component (2) includes two corner reinforcement blocks (207) which are respectively attached to the upper and lower corners of the corresponding edge positions of the carton body (1). The top surfaces of the upper and lower corner reinforcement blocks (207) are vertically extended and fixed with extension plates (205). The intermediate plates (204) are parallelly arranged on the inner sides of the corresponding upper and lower extension plates (205). The intermediate plates (204) are vertically provided with adjustment slots (206), and the adjustment slots (206) are arranged horizontally. There are through grooves extending upwards, and the upper and lower extension plates (205) are both laterally fixed with studs (202) at the end faces close to the middle plate (204). The upper and lower studs (202) are both located at the parts where the upper and lower extension plates (205) are close to each other, and the studs (202) pass through the corresponding adjustment grooves (206) in a transverse sliding manner. The parts of the studs (202) extending out of the corresponding adjustment grooves (206) are coaxially meshed with locking nuts (201), and the locking nuts (201) can be pressed against the corresponding surfaces of the middle plates (204).

3. A corrugated paper box with corner reinforcement according to claim 2, characterized in that: The extension plate (205) and the middle plate (204) are both rectangular long strips, and the adjustment grooves (206) are both waist-shaped long grooves.

4. A corrugated paper box with corner reinforcement according to claim 3, characterized in that: The extension plates (205) are laterally fixed with guide posts (203) at positions corresponding to the sides of the stud posts (202), and the guide posts (203) are inserted into the corresponding adjustment slots (206) in a transverse sliding manner.

5. A corrugated paper box with corner reinforcement according to claim 4, characterized in that: The locking nut (201) is a hand-tightened knurled nut, and the outer diameter of the locking nut (201) is greater than the longitudinal groove width of the adjustment groove (206).

6. A corrugated paper box with corner reinforcement according to any one of claims 2 to 5, characterized in that: The corner reinforcement blocks (207) are each made by splicing three rectangular plates perpendicular to each other, and the three rectangular plates of the corner reinforcement blocks (207) respectively correspond to three adjacent surfaces at corresponding corner positions and are in contact with each other.

7. A corrugated paper box with corner reinforcement according to claim 6, characterized in that: The combined connection components (3) each comprise a sleeve (303) and a threaded guide rod (301); the sleeve (303) is transversely arranged between the corner reinforcement blocks (207) at two sides of the bottom and is open at both ends; the threaded guide rod (301) is transversely inserted through both ends of the sleeve (303) in a coaxial sliding manner; and the outer ends of the threaded guide rods (301) at the two sides that are away from each other are detachably connected to the corresponding corner reinforcement blocks (207) via connecting sleeves (304); and the portions of the threaded guide rods (301) at the two sides that extend out of the outer ends of the sleeve (303) are coaxially engaged with the limit nuts (302).

8. A corrugated paper box with corner reinforcement according to claim 7, characterized in that: The sleeves (303) are all hollow sleeves with both ends open, and the total length of the two threaded guide rods (301) is greater than the length of the corresponding sleeves (303).

9. A corrugated paper box with corner reinforcement according to claim 7 or 8, characterized in that: The connecting sleeves (304) are all welded and fixed on the inner end faces of the corresponding corner reinforcement blocks (207), and the threaded guide rods (301) are all assembled and connected with the corresponding connecting sleeves (304) by means of threaded matching.

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