Cardboard packaging box and method for forming the same

Abstract

The present invention provides a cardboard packaging box and a forming method of the cardboard packaging box, the cardboard packaging box is used for packaging headphones, the headphones include two earphones and a headband connected to the two earphones, the cardboard packaging box includes an outer box and an inner lining assembly; the outer box includes a box body and a box cover covering the box body, the box body has a storage cavity with an upper opening; the inner lining assembly is adapted to be built into the storage cavity, the inner lining assembly includes a large cardboard liner and a small cardboard liner both folded and formed; the large cardboard liner has a placement slope for placing the headband, and the placement slope is provided with an earphone slot for accommodating the earphone; one end of the small cardboard liner is detachably mounted on the large cardboard liner, and the other end is provided with a pressure rod facing the placement slope, and an accommodating space for accommodating the headband is formed between the pressure rod and the placement slope. The cardboard packaging box of the present invention can make the headphone placement more stable and more convenient to take and put.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging, and in particular relates to a cardboard packaging box and a molding method of the cardboard packaging box. Background Art

[0002] At present, most of the headphone packaging on the market uses blister, sponge, EVA and other materials as lining to accommodate the various components and accessories of the headphone. However, these linings have disadvantages such as high cost, difficulty in degradation and environmental protection, and low production efficiency of molding. In addition, there is the problem that the headphones in the package are easy to shake or even damaged due to the looseness of the packaging. To solve this problem, the accommodating groove on the lining is usually set smaller, but such a design will make it very time-consuming and labor-intensive to take and put items, which is extremely inconvenient. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a cardboard packaging box, which is intended to solve the problem that in the existing packaging of headphones, the headphones are not placed firmly and are inconvenient to take and put.

[0004] The present invention is implemented as follows: the cardboard packaging box is used for packaging headphones, the headphones include two earphones and a headband connected to the two earphones, the cardboard packaging box includes an outer box and a lining assembly: the outer box includes a box body and a box cover covering the box body, the box body has a storage cavity with an upper opening; the lining assembly is adapted to be built into the storage cavity, the lining assembly includes a large cardboard liner and a small cardboard liner both folded and formed; the large cardboard liner has a placement slope for placing the headband, and the placement slope is provided with an earphone groove for accommodating the earphones; one end of the small cardboard liner is detachably mounted on the large cardboard liner, and the other end is provided with a pressure rod facing the placement slope, and an accommodating space for accommodating the headband is formed between the pressure rod and the placement slope.

[0005] Optionally, the large cardboard lining further comprises a slot box for storing the audio cable of the headphone, and the small cardboard lining and the slot box are arranged on both sides of the headphone slot;

[0006] With the direction from the small cardboard liner toward the slot box as the front-to-back direction, the placement slope is arranged to be inclined backward and downward;

[0007] The storage cavity has a cavity bottom surface, a front wall surface connected to the front edge of the cavity bottom surface, and a rear wall surface connected to the rear edge of the cavity bottom surface, the small cardboard lining abuts against the front wall surface, and the slot box abuts against the rear wall surface. Optionally, the large cardboard lining includes a large cardboard in a rectangular arrangement, and two first side panels formed by folding downward from the left and right side edges of the large cardboard respectively;

[0008] The lower edge of the first side plate contacts the cavity bottom surface to support the large paperboard, and the height of the first side plate gradually decreases in the direction from the small paperboard liner toward the slot box.

[0009] Optionally, the large cardboard lining further comprises a first front plate connected to the front edge of the large cardboard and a first rear plate connected to the rear edge of the large cardboard;

[0010] The first front plate is provided with a plurality of first bending lines, and the first front plate is bent along the first bending lines to form a support strip for connecting with the small paperboard lining;

[0011] The first rear plate is provided with a plurality of second bending lines, and the first rear plate is bent along the second bending lines to form the slot box.

[0012] Optionally, the small cardboard lining includes a small cardboard in a rectangular arrangement, a first socket is provided on the top surface of the support strip, a first plug tongue is convexly provided on the front edge of the small cardboard and is folded downward, and the small cardboard lining is detachably connected to the large cardboard lining by the first plug tongue being adapted to be inserted into the first socket.

[0013] Optionally, the side of the small paperboard away from the first inserting tongue has a plurality of third bending lines, and the small paperboard is bent along the third bending lines to form the pressure rod;

[0014] The left edge of the small paperboard is provided with a baffle which is folded downward.

[0015] Optionally, the bottom surface of the pressure rod and the lower edge of the baffle are both inclined rearward and downward, and the inclination of the bottom surface of the pressure rod and the inclination of the lower edge of the baffle are consistent with the inclination of the placement slope.

[0016] Optionally, there are two earphone slots, the two earphone slots are symmetrically arranged on the left and right, and the edges of the earphone slots are connected with a plurality of inner folding plates folded downwards.

[0017] Optionally, the box cover includes a cover plate connected to the front edge of the opening of the storage cavity and side plug plates formed by folding downward from the left and right side edges of the cover plate;

[0018] The inner cavity also has two side walls respectively connected to the left and right edges of the cavity bottom surface, and there are gaps between the left and right side surfaces of the lining assembly and the corresponding side walls, respectively, and the gaps can be used for the side plug-in plates to be inserted to achieve the covering of the box cover and the box body.

[0019] Optionally, the outer shell and the lining assembly are both made of corrugated paper.

[0020] The present invention also provides a method for forming a cardboard packaging box, which is used for forming the aforementioned cardboard packaging box and comprises the following steps:

[0021] S10, folding the outer box paperboard in a flat state into an outer box;

[0022] S20, folding the small cardboard lining in a flat state into a small cardboard lining, and folding the large cardboard lining in a flat state into a large cardboard lining;

[0023] S30, inserting the small cardboard liner onto the large cardboard liner to form a liner assembly;

[0024] S40, fitting the lining assembly into the outer box to form the paperboard packaging box.

[0025] Optionally, when the small cardboard lining is in a flat state, it includes a rectangular small cardboard, a first plug tongue provided at the front edge of the small cardboard, a baffle provided at the left edge of the small cardboard, a fifth plug tongue provided on the small cardboard for fixing the pressure rod, and a fifth socket matched with the fifth plug tongue, and the step S20 includes:

[0026] The rear area of ​​the small cardboard is folded to form four long strip panels, and then the fifth tongue is inserted into the fifth socket to form the pressure rod, and then the baffle is folded to form isolation between the microphone rod and the headphone.

[0027] Optionally, when the large cardboard lining is in a flat state, it includes a large cardboard, a first front panel connected to the front edge of the large cardboard, two first side panels respectively connected to the left and right edges of the large cardboard, an earphone slot provided on the large cardboard, and an inner folding panel connected to the edge of the earphone slot; the first front panel is provided with a first socket adapted to the first plug tongue; and step S20 further includes:

[0028] The first front panel is folded to form the back, support strip and front support surface of the large cardboard liner, the two first side panels are folded to form the left and right support surfaces of the large cardboard liner, and the first rear panel is folded to form a slot box and the lower support surface of the large cardboard liner.

[0029] Based on this structural design, since the cardboard packaging box is made of paper material, compared with the common linings made of blister, sponge, EVA and other materials, this cardboard packaging box not only has lower material costs, but can also be directly folded into shape by cardboard. No glue is required throughout the production process. The structure is firm, simple and easy to form. Therefore, it can effectively protect the product function and appearance while effectively reducing packaging costs and improving the efficiency of packaging production and packaging products, achieving the comprehensive goal of economical, environmentally friendly and simple packaging. In actual use, the earpiece of the headset can be accommodated in the earpiece slot, and the headset is placed on the placement inclined surface, and the accommodation arrangement is reasonable; after the box body and the box cover are closed, the headset of the headset can be clamped between the pressure rod of the small cardboard lining and the placement inclined surface, and combined with the fixing effect of the earpiece by the earpiece slot, the headset can be effectively fixed without moving left and right or forward and backward, so that the headset can be placed more firmly; after the box cover is opened, since the small cardboard lining and the large cardboard lining are detachably connected, the headset can be conveniently taken out or placed after removing the small cardboard lining. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 is a schematic structural diagram of a cardboard packaging box provided by an embodiment of the present invention;

[0032] Figure 2 is a schematic structural diagram of a lining assembly in a cardboard packaging box provided by an embodiment of the present invention;

[0033] Figure 3 is a left side view of a lining assembly in a cardboard packaging box provided by an embodiment of the present invention;

[0034] Figure 4 is a schematic structural diagram of an outer box in a cardboard packaging box provided by an embodiment of the present invention when it is in a flat state;

[0035] Figure 5 It is a schematic structural diagram of the lining assembly in the cardboard packaging box provided by an embodiment of the present invention when it is in a flat state.

[0036] Description of Figure Numbers:

[0037] Label name Label name 100 Outer box 200 Liner components 210 Large cardboard lining 220 Small cardboard lining 211 place bevel 212 Slot Box 213 Headphone slot 214 Large cardboard 215 First side panel 216 First front panel 216b Support bar 216a First bend line 217 First rear panel 217a Second bend line 221 Small cardboard 216c First socket 221a First tongue 221b The third bending line 222 Pressure rod 223 Bezel 213a Inner folding plate 110 Box 120 Lid 121 Cover 122 Side panels 111 Outer box bottom plate 112 Front panel of outer box 113 Outer box side panel 114 Second tongue 115 Third tongue 123 Box cover front panel 124 Fourth tongue 113a First outer box side panel 113b Second outer box side panel 116 Card hole 117 Buckle 221c Fifth tongue 221d Fifth socket 212a Rectangular hole 212b Round hole 118 Outer box back panel DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should also be noted that the directional terms such as left, right, up and down in the embodiments of the present invention are merely relative concepts or are based on the normal use status of the product and should not be considered as restrictive.

[0041] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] An embodiment of the present invention provides a cardboard packaging box.

[0045] See also Figure 1 and Figure 2The cardboard packaging box includes an outer box 100 and a lining assembly 200; the outer box 100 includes a box body 110 and a box cover 120 covering the box body 110, the box body 110 has a storage cavity (not marked) with an upper opening; the lining assembly 200 is adapted to be built into the storage cavity, and the lining assembly 200 includes a large cardboard lining 210 and a small cardboard lining 220, both of which are folded and formed; the large cardboard lining 210 has a placement slope 211 for placing a headband, and the placement slope 211 is provided with an earphone slot 213 for accommodating an earphone; one end of the small cardboard lining 220 is detachably mounted on the large cardboard lining 210, and the other end is provided with a pressure rod 222 facing the placement slope 211, and a accommodating space for accommodating the headband is formed between the pressure rod 222 and the placement slope 211. It should be noted that the present cardboard packaging box is particularly suitable for headphones (not shown), especially headphones with microphone stems. Of course, headphones without microphone stems, or other products with similar structures to headphones can also be packaged using the present cardboard packaging box. Usually, headphones include two earpieces, a headset connecting the two earpieces, a microphone stem connected to one of the earpieces, an audio cable connected to at least one earpiece, and of course, several accessories may be attached. However, for the packaging of headphones, most of the materials on the market today use blister, sponge, EVA and other materials as linings. In addition to the high price and difficulty in degradation, which is not conducive to environmental protection, these materials also require high mold costs for material molding; in addition, when using these materials as packaging linings, glue is usually used to stick the lining in the packaging box to fix the lining so that it is not too loose, so the production process is relatively complicated, the production efficiency of material molding is low, and the production cost is relatively high.

[0046] In addition, in the embodiment of the present invention, the outer shell and the lining assembly 200 are preferably made of a single green, environmentally friendly, and recyclable corrugated paper material, wherein the material of the outer box 100 is preferably a corrugated paperboard with an E-pit 120g core paper. It can be understood that the use of corrugated paperboard to make the present cardboard packaging box not only has lower material costs, but also the hollow structure of the corrugated paper can provide better shock protection. In addition, in the production process of the entire cardboard packaging box, no harmful substances and non-degradable substances are produced, and the scraps can be recycled, which will be beneficial to environmental protection.

[0047] Based on this structural design, since the cardboard packaging box is made of paper material, compared with the common linings made of blister, sponge, EVA and other materials, this cardboard packaging box not only has lower material costs, but can also be directly folded into shape by cardboard. No glue is required throughout the production process. The structure is firm, simple and easy to form. Therefore, it can effectively protect the product function and appearance while effectively reducing packaging costs and improving the efficiency of packaging production and packaging products, achieving the comprehensive goal of economical, environmentally friendly and simple packaging. In actual use, the earphone of the headset can be accommodated in the earphone slot 213, and the headset is placed on the placement slope 211, and the accommodation arrangement is reasonable; after the box body 110 and the box cover 120 are closed, the headset of the headset can be clamped between the pressure rod 222 of the small cardboard lining 220 and the placement slope 211, and combined with the fixing effect of the earphone slot 213 on the earphone, the headset can be effectively fixed and will not move left and right or forward and backward, so that the headset can be placed more firmly; after the box cover 120 is opened, since the small cardboard lining 220 and the large cardboard lining 210 are detachably connected, the headset can be easily taken out or placed after removing the small cardboard lining 220. Please refer to Figure 1 , Figure 3 and Figure 4 In the embodiment of the present invention, specifically, the large cardboard lining 210 also includes a slot box 212 for storing the audio cable of the headphone, and the small cardboard lining 220 and the slot box 212 are respectively arranged on both sides of the headphone slot 213; the placement slope 211 is arranged to be inclined downward and backward with the direction of the small cardboard lining 220 toward the slot box 212 as the front-to-back direction; the storage cavity has a cavity bottom surface (not marked), a front wall surface (not marked) connected to the front side edge of the cavity bottom surface, and a rear wall surface (not marked) connected to the rear side edge of the cavity bottom surface; the front wall surface of the small cardboard lining 220 abuts, and the slot box 212 abuts the rear wall surface. In this way, after the formed large cardboard lining 210 is placed inside the outer box 100, it can be fixed by the outer box 100 in front, back, left and right directions, and the size of the large cardboard lining 210 after forming is compactly assembled with the internal size of the outer box 100, so that the lining assembly 200 can be effectively fixed and will not be loose or moved.

[0048] See also Figure 2 , Figure 3 and Figure 5, further, with the direction from the small cardboard liner 220 toward the slot box 212 as the direction from front to back, the large cardboard liner 210 includes a large cardboard 214 arranged in a rectangular shape, and two first side panels 215 formed by folding downward from the left and right side edges of the large cardboard 214; the lower edge of the first side panel 215 contacts the cavity bottom surface to support the large cardboard 214, and the height of the first side panel 215 gradually decreases along the direction from the small cardboard liner 220 toward the slot box 212. In other words, the first side panels 215 on the left and right sides of the large cardboard 214 have an inclination tilted backward and downward, and because the first side panels 215 play a supporting role on the large cardboard 214, the inclination of the first side panels 215 determines the inclination of the placement slope 211, and the inclinations of the two are consistent, and the inclination can be preferably 9°, so as to better realize the placement and fixing effect of the placement slope 211 on the headphone headband, but the inclination can also be adjusted according to the actual situation of the headband and the earphone. However, the present design is not limited thereto. In other embodiments, the large cardboard lining 210 may not be provided with the first side panel 215, but convex strips of different heights may be directly provided on the front wall and the rear wall respectively, and then the front and rear edges of the large cardboard 214 are overlapped on the corresponding convex strips respectively.

[0049] See also Figure 2 , Figure 3 and Figure 5 In the embodiment of the present invention, the large cardboard liner 210 further includes a first front plate 216 connected to the front edge of the large cardboard 214 and a first rear plate 217 connected to the rear edge of the large cardboard 214; the first front plate 216 is provided with a plurality of first bending lines 216a, and the first front plate 216 is bent along the first bending lines 216a to form a support strip 216b for connecting to the small cardboard liner 220; the first rear plate 217 is provided with a plurality of second bending lines 217a, and the first rear plate 217 is bent along the second bending lines 217a to form a slot box 212.

[0050] Further, the small cardboard lining 220 includes a small cardboard 221 in a rectangular arrangement, a first socket 216c is provided on the top surface of the support strip 216b, and a first plug tongue 221a folded downward is convexly provided on the front edge of the small cardboard 221, and the small cardboard lining 220 is adapted to be inserted into the first socket 216c by the first plug tongue 221a to achieve a detachable connection with the large cardboard lining 210. In other words, after the small cardboard lining 220 is formed, it can be assembled on the large cardboard lining 210 by plugging and fixed, so as to assemble and form the entire lining assembly 200. Of course, in other embodiments, the small cardboard lining 220 can also be connected by other methods, but the plugging in this embodiment is the simplest and most convenient, and the forming efficiency is higher. Specifically, the first socket 216c is rectangular, and the width is about the thickness of a cardboard, and the first plug tongue 221a can be adapted to be inserted into the first socket 216c without being easily loosened.

[0051] See also Figure 2 , Figure 3 and Figure 5 In the embodiment of the present invention, the side of the small paperboard 221 away from the first plug tongue 221a has a plurality of third bending lines 221b, and the small paperboard 221 is bent along the third bending lines 221b to form a pressure bar 222 for fixing the headband of the headphone; the pressure bar 222 is mainly used to fix the headband of the headphone so that the headband will not shake up and down. At the same time, the left edge of the small paperboard 221 is provided with a baffle 223 formed by folding downward, and the baffle 223 can be used to isolate the headphone microphone rod and the headband, thereby avoiding friction between the two.

[0052] Furthermore, if Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the bottom surface of the pressure rod 222 and the lower edge of the baffle 223 are both inclined backward and downward, and the inclination of the bottom surface of the pressure rod 222 and the inclination of the lower edge of the baffle 223 are consistent with the inclination of the placement slope 211. Specifically in this embodiment, the inclination of these components is preferably 9°. Figure 5 The area on one side of the small paperboard 221 away from the first inserting tongue 221a is divided into four long strip panels arranged in sequence front to back through a plurality of third bending lines 221b, and the pressure rod 222 is formed after bending. The inclination of the bottom surface of the pressure rod 222 can be changed by modifying the width of the bending of the four panels, and the inclination can be adjusted according to the inclination of the headband. Similarly, the inclination of the lower edge of the baffle 223 can also be adjusted according to the inclination of the placement slope 211. In order to obtain better support and blocking effects, the lower edge of the baffle 223 is preferably in contact with the placement slope 211.

[0053] See also Figure 1 , Figure 2 and Figure 5 In the embodiment of the present invention, there are two earphone slots 213 for accommodating two earphones of the headphone respectively. The two earphone slots 213 are symmetrically arranged, and the edges of the earphone slots 213 are connected with a plurality of inner folding plates 213a folded downward. Specifically, four inner folding plates 213a are arranged in each of the left and right earphone slots 213. In addition to playing a role in fixing and protecting the earphones, these inner folding plates 213a can also play a role in supporting the placement inclined surface 211 to a certain extent.

[0054] Furthermore, if Figure 1 and Figure 4As shown, in an embodiment of the present invention, the box cover 120 includes a cover plate 121 connected to the front edge of the opening of the storage cavity and a side plug plate 122 formed by folding downward from the left and right edges of the cover plate 121; the inner cavity also has two side walls (not marked) connected to the left and right edges of the bottom surface of the cavity, respectively, and there is a gap (not marked) between the left and right sides of the lining component 200 and the side walls of the corresponding sides, respectively, and the gap can be inserted into the side plug plate 122 to achieve the cover of the box cover 120 and the box body 110. Here, the opening method of the cardboard packaging box is folding. Of course, in other embodiments, the box cover 120 can also be separated from the box body 110 and cover the opening of the box body 110. Specifically, the gap width between the left and right sides of the lining component 200 and the side walls of the corresponding sides is usually the thickness of a piece of cardboard. After the entire packaging is formed, the top surface of the lining component 200 is in close contact with the inner side of the cover plate 121, thereby effectively preventing the items placed in the packaging box from shaking. In addition, the outer box 100 is structurally designed to be symmetrical about the left and right central axes, which is convenient for left and right hand operation during molding. The left and right sides of the outer box 100 are formed with two layers of corrugated cardboard after molding to enhance the structural firmness and compressive strength of the outer box 100.

[0055] Based on the aforementioned structural design, the present invention further proposes a method for forming a cardboard packaging box, which is used for forming the aforementioned cardboard packaging box, and comprises the following steps:

[0056] S10, folding the flat outer box paperboard into an outer box 100.

[0057] like Figure 4As shown, when the cardboard of the outer box 100 is in a flat state, the structure is bilaterally symmetrical, including a rectangular outer box bottom plate 111, an outer box front plate 112 respectively connected to the edges of the outer box bottom plate 111, an outer box back plate 118, and two outer box side plates 113, second plug tongues 114 respectively connected to the outer box front plate 112 and the outer box side plates 113 on both sides, third plug tongues 115 respectively connected to the outer box back plate 118 and the outer box side plates 113 on both sides, a cover plate 121 connected to the outer box front plate 112, two side plug plates 122 respectively connected to the left and right side edges of the cover plate 121, a box cover front plate 123 connected to the front side edge of the cover plate 121, and fourth plug tongues 124 arranged on the left and right sides of the box cover front plate 123. Each outer box side plate 113 is divided into a first outer box side plate 113a and a second outer box side plate 113b. The first outer box side plate 113a and the outer box bottom plate 111 are provided with a plurality of snap holes 116 at the bent connection, and the second outer box side plate 113b is provided with snap buckles 117 that match the snap holes 116. During molding, the outer box front plate 112 and the outer box rear plate 118 are folded first, and then the second plug tongue 114 and the third plug tongue 115 are folded, and then the first outer box side plate 113a and the second outer box side plate 113b are folded, and the snap buckles 117 on the second outer box side plate 113b are inserted into the snap holes 116, so that the left and right panels of the outer box 100 are fixed, and finally the side plug plate 122 is inserted into the inner part of the outer box 100, and the fourth plug tongue 124 is inserted into the gap of the outer box side plate 113 to complete the molding of the outer box 100. It can be seen from the above process that no sealing glue or adhesive is needed in the molding process of the entire outer box 100, and the molding is convenient and fast, which can effectively improve the production efficiency of the paperboard packaging box.

[0058] S20, folding the small cardboard liner in a flat state into a small cardboard liner 220, and folding the large cardboard liner in a flat state into a large cardboard liner 210.

[0059] like Figure 5 As shown, when the small cardboard lining 220 is in a flat state, it includes a rectangular small cardboard 221, a first plug tongue 221a provided at the front edge of the small cardboard 221, a baffle 223 provided at the left edge of the small cardboard 221, a fifth plug tongue 221c provided on the small cardboard 221 for fixing the pressure rod 222, and a fifth socket 221d matched with the fifth plug tongue 221c. The rear area of ​​the small cardboard 221 is folded to form four long strip panels, and then the fifth plug tongue 221c is inserted into the fifth socket 221d to complete the molding of the pressure rod 222. Then, by folding the baffle 223, the isolation between the microphone rod and the headband can be formed.

[0060] Then, if Figure 5As shown, when the large cardboard lining 210 is in a flat state, it includes a large cardboard 214, a first front plate 216 connected to the front edge of the large cardboard 214, two first side plates 215 respectively connected to the left and right edges of the large cardboard 214, two earphone slots 213 provided on the large cardboard 214, and an inner folding plate 213a connected to the edge of the earphone slot 213. The first front plate 216 is folded to form three long strip panels arranged in sequence front and back, and the first front plate 216 is also provided with a first socket 216c adapted to the first plug tongue 221a; the first rear plate 217 is also folded to form three long strip panels arranged in sequence front and back; wherein, the first rear plate 217 is also provided with a rectangular hole 212a and a circular hole 212b connected to each other, and the hole position design can facilitate the removal of the audio cable, and can be generally used for headphones with an audio cable and earphone integrated or headphones with the audio cable and earphone separated.

[0061] During molding, the three long strip surfaces of the first front panel 216 are folded first to form the front support surface of the large cardboard lining 210, the left and right support surfaces of the large cardboard lining 210 can be formed by folding the two first side panels 215, and the slot box 212 and the lower support surface of the large cardboard lining 210 are formed by folding the three long strip surfaces of the first rear panel 217.

[0062] S30 , inserting the small cardboard liner 220 onto the large cardboard liner 210 to form the liner assembly 200 .

[0063] like Figure 2 and Figure 3 As shown, after the large cardboard liner 210 and the small cardboard liner 220 are formed respectively, the large cardboard liner 210 and the small cardboard liner 220 can be firmly assembled together by inserting the first inserting tongue 221a on the small cardboard liner 220 into the first inserting hole 216c on the large cardboard liner 210.

[0064] S40, fitting the lining assembly 200 into the outer box 100 to form a cardboard packaging box.

[0065] In other words, by placing the assembled liner assembly 200 in the outer box 100, the molding of the entire cardboard packaging box is completed.

[0066] From the above forming method of the cardboard packaging box, it can be seen that through the special structural design of the packaging box, the cardboard packaging box is simple and convenient to produce, and the structure can be stable without using glue, thereby achieving the purpose of effectively improving the efficiency of packaging production while effectively protecting the product function and appearance.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cardboard packaging box for packaging headphones, wherein the headphones include two earphones and a headset connecting the two earphones, characterized in that: include: The outer box comprises a box body and a box cover which covers the box body, wherein the box body has a storage cavity which is open at the top; as well as, A lining component adapted to be built into the storage cavity, the lining component comprising a large cardboard lining and a small cardboard lining both of which are folded and formed; the large cardboard lining has a placement slope for placing the headband, and the placement slope is provided with an earphone slot for accommodating the earpiece; one end of the small cardboard lining is detachably mounted on the large cardboard lining, and the other end is provided with a pressure rod facing the placement slope, and an accommodating space for accommodating the headband is formed between the pressure rod and the placement slope; The small cardboard lining comprises a small cardboard in a rectangular shape, a first plug tongue folded downwardly is convexly provided on the front edge of the small cardboard; a side of the small cardboard away from the first plug tongue has a plurality of third bending lines, the small cardboard is bent along the third bending lines to form the pressure rod, and a baffle folded downwardly is provided on the left edge of the small cardboard, the baffle is used to isolate the earphone microphone rod from the headband; The area of ​​the small paperboard on one side away from the first inserting tongue is divided into four long strip panels arranged in sequence front to back through a plurality of the third bending lines, and the pressure rod is formed after being bent. The inclination of the bottom surface of the pressure rod can be changed by modifying the bending width of the four panels; The outer box and the inner lining assembly are both made of corrugated paper. After the box body and the box cover are closed, the headband of the headset can be clamped between the pressure rod and the placement inclined surface of the small cardboard lining, and the earphone groove fixes the earpiece, so that the headset is effectively fixed and will not move left and right or forward and backward.

2. The cardboard packaging box according to claim 1, characterized in that: The large cardboard lining also includes a slot box for storing the audio cable of the headphone, and the small cardboard lining and the slot box are arranged on both sides of the headphone slot; With the direction from the small cardboard liner toward the slot box as the front-to-back direction, the placement slope is arranged to be inclined backward and downward; The storage cavity comprises a cavity bottom surface, a front wall surface connected to the front side edge of the cavity bottom surface, and a rear wall surface connected to the rear side edge of the cavity bottom surface; the small cardboard liner abuts against the front wall surface, and the slot box abuts against the rear wall surface.

3. The cardboard packaging box according to claim 2, characterized in that: The large cardboard lining comprises a large cardboard in a rectangular shape, and two first side panels formed by folding downwards from left and right side edges of the large cardboard respectively; The lower edge of the first side plate contacts the cavity bottom surface to support the large cardboard, and the height of the first side plate gradually decreases in the direction from the small cardboard liner toward the slot box.

4. The cardboard packaging box according to claim 3, characterized in that: The large paperboard lining also includes a first front plate connected to the front edge of the large paperboard and a first rear plate connected to the rear edge of the large paperboard; The first front plate is provided with a plurality of first bending lines, and the first front plate is bent along the first bending lines to form a support strip for connecting with the small paperboard lining; The first rear plate is provided with a plurality of second bending lines, and the first rear plate is bent along the second bending lines to form the slot box.

5. The cardboard packaging box according to claim 4, characterized in that: A first socket is provided on the top surface of the support strip, and the small cardboard liner is detachably connected to the large cardboard liner by being inserted into the first socket through the first plug tongue.

6. The cardboard packaging box according to claim 5, characterized in that: The bottom surface of the pressure rod and the lower edge of the baffle are both arranged to be tilted backward and downward, and the inclination of the bottom surface of the pressure rod and the inclination of the lower edge of the baffle are consistent with the inclination of the placement slope.

7. The cardboard packaging box according to claim 6, characterized in that: There are two earphone slots, which are symmetrically arranged on the left and right, and the edges of the earphone slots are connected with a plurality of inner folding plates folded downward.

8. The cardboard packaging box according to claim 7, characterized in that: The box cover comprises a cover plate connected to the front edge of the opening of the storage cavity, and side insert plates formed by folding downward from the left and right side edges of the cover plate; The storage cavity also has two side walls respectively connected to the left and right edges of the cavity bottom surface, and there are gaps between the left and right side surfaces of the lining component and the side walls on the corresponding sides, and the gaps can be used for the side plug-in plates to be inserted to achieve the covering of the box cover and the box body.

9. A method for forming a cardboard packaging box, characterized in that: The method for forming a cardboard packaging box is used for forming a cardboard packaging box as claimed in claim 8, comprising the following steps: S10, folding the flat outer box paperboard into an outer box; S20, folding the small cardboard lining in a flat state into a small cardboard lining, and folding the large cardboard lining in a flat state into a large cardboard lining; S30, inserting the small cardboard liner onto the large cardboard liner to form a liner assembly; S40, fitting the lining assembly into the outer box to form the paperboard packaging box.

10. The method for forming a cardboard packaging box according to claim 9, characterized in that: When the small cardboard lining is in a flat state, it includes a rectangular small cardboard, a first plug tongue arranged at the front edge of the small cardboard, a baffle arranged at the left edge of the small cardboard, a fifth plug tongue arranged on the small cardboard for fixing the pressure rod, and a fifth socket matched with the fifth plug tongue. The step S20 includes: The rear area of ​​the small cardboard is folded to form four long strip panels, and then the fifth tongue is inserted into the fifth socket to form the pressure rod, and then the baffle is folded to form isolation between the microphone rod and the headphone.

11. The method for forming a cardboard packaging box according to claim 10, characterized in that: When the large cardboard lining is in a flat state, it includes a large cardboard, a first front plate connected to the front edge of the large cardboard, two first side plates respectively connected to the left and right edges of the large cardboard, an earphone slot provided on the large cardboard, and an inner folding plate connected to the edge of the earphone slot; the first front plate is provided with a first socket adapted to the first plug tongue; The step S20 further includes: The first front panel is folded to form the back, support strip and front support surface of the large cardboard liner, the two first side panels are folded to form the left and right support surfaces of the large cardboard liner, and the first rear panel is folded to form a slot box and the lower support surface of the large cardboard liner.

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