Molded pulp packaging box

Abstract

The utility model provides a molded pulp packing box which comprises a base, a lining and a box cover, the lining is placed in the base and is in interference fit with the base, the box cover is buckled on the base, the lining is in interference fit with the box cover, and the included angle between the connecting position of the base and the box cover, the first contact portion of the base and the vertical direction and the included angle between the second contact portion of the box cover and the vertical direction are 0 degree. According to the paper pulp molding packaging box, the local zero-degree angle design is adopted, the local zero-degree angle design is matched with the interference fit, so that the paper pulp molding packaging box does not need to be folded and assembled in a bonding mode, assembling is convenient, the stability of the connection relation of all the components is good, and products in the packaging box can be effectively protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of paper pulp molded product, specifically to a paper pulp molded packing box. BACKGROUND

[0002] The paper pulp molded product is a new type of packing material with green environmental protection and energy saving, has the advantages of environmental protection, degradable, little environmental pollution and cheap, and has been widely applied to electronic communication, furniture, agricultural and sideline products, toys and other industries packing. The common paper pulp molded packing box is composed of a base, an inner liner and a box cover, or the base and the inner liner are integrally formed, and the assembling mode is usually that the box cover is buckled on the base, the inner side wall of the box cover is attached to the outer side wall of the base, and then the inner liner is clamped into the base and the box cover is covered, however, the glue bonding is time-consuming and laborious, and increases the cost, and if the clamping is adopted, since the forming directions of the base and the inner liner are completely opposite, there is a misalignment difference between the base and the inner liner, so that a gap is generated after the clamping of the base and the inner liner, and the gap has the risk of falling off when subjected to impact force. SUMMARY

[0003] In order to solve the above problems and other problems, the utility model is realized through the following technical scheme: a paper pulp molded packing box, comprising: a base; an inner liner, the inner liner is placed in the base, the lower half of the side wall of the inner liner is interference fit with the base; a box cover, the box cover is covered on the base, the end face of the box cover is attached to the end face of the base, the box cover is interference fit with the upper half of the side wall of the inner liner; the connection between the base and the box cover is located on a straight line, and the included angle with the vertical direction is 0°.

[0004] In an embodiment, the base comprises a bottom wall and a first side wall, and the peripheral portion of the bottom wall extends upwardly to the first side wall.

[0005] In an embodiment, the inner liner comprises a main body, a receiving cavity and a second side wall, the center position of the main body is sunken to form the receiving cavity, and the peripheral portion of the main body extends downwardly to the second side wall.

[0006] In an embodiment, the box cover comprises a cover body and a third side wall, and the peripheral portion of the cover body extends downwardly to the third side wall.

[0007] In an embodiment, the first side wall is attached to the third side wall, and the second side wall is tightly attached to the first side wall and the third side wall and is interference fit.

[0008] In an embodiment, the first side wall comprises a first connecting portion and a first contacting portion, the first connecting portion is a lower end of the first side wall, the first contacting portion is an upper end of the first side wall, an angle between the first contacting portion and the vertical direction is 0°, and an inner side of the first contacting portion is in contact with and is in interference fit with the second side wall.

[0009] In an embodiment, the third side wall comprises a second connecting portion and a second contacting portion, the second connecting portion is an upper end of the third side wall, the second contacting portion is a lower end of the third side wall, an angle between the second contacting portion and the vertical direction is 0°, and an inner side of the second contacting portion is in contact with and is in interference fit with the second side wall.

[0010] In an embodiment, the length a of the first contacting portion and the length b of the second contacting portion are equal.

[0011] In an embodiment, the length a of the first contacting portion and the length b of the second contacting portion are 5 to 8 mm.

[0012] Thanks to the above technical scheme, the utility model has the following advantages compared with the prior art: the utility model adopts the design that the contact position of the base and the box cover forms a local "zero-degree angle" feature and the inner lining is in interference fit with the base and the box cover, the pulp molded packaging box does not need to be folded and bonded for assembly, the assembly is convenient, meanwhile, the stability of the connection relationship between the components is good, and the product in the packaging box can be effectively protected. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A packaging box according to the utility model is shown in a schematic view;

[0014] Figure 2 A packaging box structure according to the utility model is shown in a schematic view;

[0015] Figure 3 A packaging box cross section according to the utility model is shown in a schematic view;

[0016] Figure 4 A Figure 3 A local enlarged view at A in FIG. 1.

[0017] 1 - packaging box; 11 - base; 111 - bottom wall; 112 - first side wall; 1121 - first connecting portion; 1122 - first contacting portion; 12 - inner lining; 121 - main body; 122 - accommodating cavity; 123 - second side wall; 13 - box cover; 131 - cover body; 132 - third side wall; 1321 - second connecting portion; 1322 - second contacting portion. DETAILED DESCRIPTION

[0018] Please refer to Figures 1 to 4The implementation modes of the present application are described below through specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present specification.

[0019] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings of the present specification are merely used to cooperate with the content disclosed in the present specification for the understanding and reading of those skilled in the art, and are not used to limit the implementation conditions of the present application, and therefore do not have technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. Meanwhile, the terms such as "left", "right", "up", "down", and "one" used in the present specification are merely used for the clear understanding of the description, and are not used to limit the implementation range of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, should also be considered as the implementation range of the present application.

[0020] In the present application, the following description is made for the purpose of clarity: an observer faces the attached Figure 1 packaging box, the direction of the box cover of the packaging box is set as "up", the direction of the base is set as "down", the front-rear direction of the observer is the longitudinal direction, and the left-right direction of the observer is the transverse direction. The above description is only for the purpose of clearly describing the present application, and is not intended to indicate or imply that the indicated structure or component must have a specific orientation or be constructed in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0021] Please refer to Figure 1 , Figure 2 and Figure 3 , a pulp molded packaging box 1 comprises a base 11, an inner liner 12, and a box cover 13, the base 11 is in interference fit with the inner liner 12, and the box cover 13 covers the base 11, covers the inner liner 12, and is in interference fit with the inner liner 12.

[0022] Specifically, the connection between the base 11 and the box cover 13 is located on a straight line, and the included angle with the vertical direction is 0°.

[0023] The base 11 comprises a bottom wall 111 and a first side wall 112, the peripheral portion of the bottom wall 111 extends upwardly to the first side wall 112, and the upper end of the first side wall 112 is in interference fit with the inner liner 12.

[0024] The inner liner 12 comprises a main body 121, a containing cavity 122 and a second side wall 123, the containing cavity 122 is formed by the central position of the main body 121 sinking, the product is placed and protected in the containing cavity 122, and the containing cavity 122 is designed according to the shape of the specific product; the peripheral part of the main body 121 extends downwards to the second side wall 123, and the second side wall 123 is tightly and interference-fitted with the first side wall 112.

[0025] The box cover 13 comprises a cover body 131 and a third side wall 132, the peripheral part of the cover body 131 extends downwards to the third side wall 132, and the end face of the cover body 131 is attached to the end face of the main body 121; the end face of the third side wall 132 is attached to the end face of the first side wall 112, and the inner side of the third side wall 132 is tightly and interference-fitted with the second side wall 123.

[0026] Specifically, the included angle between the connecting part of the first side wall 112 and the third side wall 132 and the vertical direction is 0°.

[0027] Please refer to Figure 3 and Figure 4 The first side wall 112 comprises a first connecting part 1121 and a first contact part 1122, the first connecting part 1121 is the lower end of the first side wall 112, and the first connecting part 1121 is connected with the bottom wall 111; the first contact part 1122 is the upper end of the first side wall 112, the lower end of the first contact part 1122 is connected with the first connecting part 1121, the upper end of the first contact part 1122 is connected with the third side wall 132, and the inner side of the first contact part 1122 is in contact and interference-fitted with the second side wall 123. The third side wall 132 comprises a second connecting part 1321 and a second contact part 1322, the second connecting part 1321 is the upper end of the third side wall 132, and the second connecting part 1321 is connected with the cover body 131; the second contact part 1322 is the lower end of the third side wall 132, the upper end of the second contact part 1322 is connected with the second connecting part 1321, the lower end of the second contact part 1322 is connected with the first contact part 1122, and the inner side of the second contact part 1322 is in contact and interference-fitted with the second side wall 123.

[0028] Specifically, the end of the first contact part 1122 and the end of the second contact part 1322 are in contact, the first contact part 1122 and the second contact part 1322 are in a straight line, and the included angle with the vertical direction is 0°, which is called a local "zero-degree angle" design. In order to facilitate demolding, a draft angle is usually provided in the mold, that is, there is an angle between the part and the vertical direction, and in order to ensure that the part can be smoothly separated from the mold during demolding, it is necessary to determine the draft angle and the guiding device to assist, and the local "zero-degree angle" design does not have the structure design of the clamping mode, the mold structure is simple, and there is no need to design the draft angle additionally, and it also will not affect the appearance or increase the process link; if only the base 11, the inner liner 12 and the box cover 13 are interference fit, there is no local "zero-degree angle" design, and after the packaging box 1 is affected by vibration, the contact points of the base 11, the inner liner 12 and the box cover 13 are opened due to tension, and due to the influence of the interference fit between the parts and the demolding direction of the part itself, vibration will cause the force to move in the demolding direction, and finally the tension is opened.

[0029] Specifically, the length a of the first contact part 1122 and the length b of the second contact part 1322 are equal, and are usually 5mm to 8mm.

[0030] Further, the length a of the first contact part 1122 and the length b of the second contact part 1322 are preferably 5mm.

[0031] In summary, the base and the box cover of the utility model adopt the design of forming a local "zero-degree angle" feature at the contact position and the interference fit between the inner liner and the base and the box cover, and the pulp molded packaging box does not need to be folded and bonded for assembly, and the assembly is convenient, and the stability of the connection relationship between the parts is good, and the product in the packaging box can be effectively protected.

[0032] Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value. The above embodiments only exemplarily illustrate the principle and effect of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A pulp molded packaging box, characterized in that, include: Base; The liner is placed in the base, and the lower half of the side wall of the liner is interference-fitted with the base; A box lid, which covers the base, with the end face of the box lid fitting against the end face of the base, and the box lid having an interference fit with the upper half of the side wall of the inner lining; The connection between the base and the lid is on a straight line, and the angle between the connection and the vertical direction is 0°.

2. A pulp molded packaging box according to claim 1, characterized in that, The base includes a bottom wall and a first side wall, with the periphery of the bottom wall extending upwards towards the first side wall.

3. A pulp molded packaging box according to claim 2, characterized in that, The liner includes a main body, a receiving cavity, and a second sidewall. The receiving cavity is formed by a depression at the center of the main body, and the second sidewall extends downward from the periphery of the main body.

4. A pulp molded packaging box according to claim 3, characterized in that, The lid includes a lid body and a third sidewall, with the third sidewall extending downward from the periphery of the lid body.

5. A pulp molded packaging box according to claim 4, characterized in that, The first sidewall is fitted to the third sidewall, and the second sidewall is tightly fitted to the first sidewall and the third sidewall with an interference fit.

6. A pulp molded packaging box according to claim 5, characterized in that, The first sidewall includes a first connecting portion and a first contact portion. The first connecting portion is the lower end of the first sidewall, and the first contact portion is the upper end of the first sidewall. The angle between the first contact portion and the vertical direction is 0°. The inner side of the first contact portion contacts the second sidewall and is interference-fitted.

7. A pulp molded packaging box according to claim 6, characterized in that, The third sidewall includes a second connecting portion and a second contact portion. The second connecting portion is the upper end of the third sidewall, and the second contact portion is the lower end of the third sidewall. The angle between the second contact portion and the vertical direction is 0°. The inner side of the second contact portion contacts the second sidewall and is interference-fitted.

8. A pulp molded packaging box according to claim 7, characterized in that, The length 'a' of the first contact portion and the length 'b' of the second contact portion are equal.

9. A pulp molded packaging box according to claim 8, characterized in that, The length 'a' of the first contact portion and the length 'b' of the second contact portion are 5 to 8 mm.

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