Glue-free packaging box

Abstract

The utility model relates to a glue-free packaging box. The glue-free packaging box comprises an outer box and a lining arranged in the outer box, the outer box body is provided with a first outer box top plate and a second outer box top plate which can be folded up and down to open and close the opening in the outer box body, and the first outer box top plate and the second outer box top plate are clamped and matched with the first outer box clamping main groove and the first outer box clamping sub groove through a first outer box clamping plate and a spring bolt. The bottle-shaped object express package overcomes the defects that an existing bottle-shaped object express package is complex in structure, inconvenient to use, high in package cost, not environmentally friendly, unreliable in sealing and the like, the box opening is sealed through the first outer box top plate and the second outer box top plate, and the first outer box top plate and the second outer box top plate are matched in a clamped mode. The design that supporting pieces are clamped between the outer box first side cover plate and the outer box left side plate and between the outer box second side cover plate and the outer box right side plate is cooperated, so that the whole outer box is sealed firmly, the outer box can be opened only after the structure is damaged after buckling, and the self-locking outer box has the advantages of being simple in structure, free of glue, self-locking, environmentally friendly and reliable in sealing.

Description

Technical Field

[0001] The utility model relates to a glue-free packaging box, especially applied in the field of express packaging for bottle-shaped objects. Background Art

[0002] The descriptions in this section only provide background information related to the present disclosure and do not constitute prior art.

[0003] At present, during the express transportation of bottle-shaped objects (without their own sales packaging, such as shampoo bottles, etc.), generally, the bottle-shaped objects are directly placed into an express packaging box (mostly using the 0201 type corrugated cardboard box that complies with GB / T 6543-2008), plastic film air cushions are filled inside the box, and then BOPP non-drying adhesive tape is used to wind and seal the express packaging box. However, during the express transportation of bottle-shaped objects, they are still very likely to break under the impact of external forces, especially for fragile parts such as the bottleneck, which requires special strengthening of protection.

[0004] However, this kind of packaging currently mainly has the following two problems:

[0005] 1. A large amount of BOPP non-drying adhesive tape is required during packaging, and after the transportation packaging box is discarded, the BOPP non-drying adhesive tape is not easy to separate from the paper box, which greatly affects the recycling and reuse of the packaging box. At the same time, the discarded BOPP non-drying adhesive tape is extremely difficult to degrade in the natural environment and will cause pollution to the environment;

[0006] 2. Using BOPP non-drying adhesive tape is not only inconvenient for sealing the box but also inconvenient for opening the box;

[0007] 3. The plastic film air cushions used for filling cannot be naturally degraded after being discarded, will pollute the environment, and are extremely likely to lose their buffering effect due to air leakage during transportation.

[0008] Therefore, it has become an urgent matter to provide a glue-free packaging box with a simple structure, glue-free self-locking environmental protection, and reliable sealing. Summary of the Utility Model

[0009] In order to overcome the disadvantages that a large amount of non-drying adhesive tape is required for the existing express packaging of bottle-shaped objects, and after the discarded packaging, the non-drying adhesive tape is not easy to separate from the paper box, with complex structure, inconvenient use, high packaging cost, non-environmental protection, unreliable sealing, etc., the utility model provides a glue-free packaging box. The box mouth is closed by the first top plate and the second top plate of the outer box, and the two are clamped and matched. And through the design of sandwiching and supporting sheets by the first side cover plate and the left side plate of the outer box, and the second side cover plate and the right side plate of the outer box on both sides of the box body, the overall sealing of the outer box is firm. After being buckled, the outer box can only be opened by destroying the structure, which has the advantages of simple structure, glue-free self-locking environmental protection, and reliable sealing.

[0010] The technical solution of the utility model is as follows:

[0011] A glue - free packaging box, comprising an outer box and a lining arranged inside the outer box;

[0012] The box body of the outer box comprises an outer box and a lining arranged inside the outer box;

[0013] The box body of the outer box comprises an outer box bottom plate and an outer box front side plate, an outer box rear side plate, an outer box left side plate and an outer box right side plate which are respectively arranged above the front, rear, left and right side edges of the outer box bottom plate and fixedly connected around. The top end of the outer box front side plate is fixedly connected with an outer box first top plate which can be turned up and down to open and close the opening on the box body of the outer box. The top end of the outer box rear side plate is fixedly connected with an outer box second top plate which can be turned up and down to open and close the opening on the box body of the outer box;

[0014] The outer box further comprises an outer box first clamping plate connected to the middle of the rear end edge of the outer box first top plate. The left and right ends of the outer box first clamping plate are respectively connected with locking tongues extending to the left and right sides. In the middle of the connection part between the outer box second top plate and the outer box rear side plate, an outer box first main clamping groove adapted to the position of the outer box first clamping plate is arranged along the extending direction of the connection part. On the outer box second top plate, there are also respectively arranged outer box first sub - clamping grooves which extend obliquely from both ends of the outer box first main clamping groove towards the rear side edge and the left and right corresponding side edges on the same side of this end and are adapted to the positions of the two locking tongues; the lengths and widths of the outer box first main clamping groove and the outer box first sub - clamping groove are respectively adapted to the outer box first clamping plate and the locking tongues; after the locking tongues are bent, they can be respectively inserted into the outer box first sub - clamping groove and the outer box first main clamping groove together with the outer box first clamping plate and are in movable clearance fit, and after the locking tongues are inserted into the outer box body from the outer box first main clamping groove, they can be unfolded to keep the outer box body in a closed state;

[0015] The outer box further comprises an outer box first side cover plate and an outer box second side cover plate which are respectively fixedly connected to the top edges of the outer box left side plate and the outer box right side plate and four support pieces arranged at the four corners inside the outer box body. Each support piece is connected to the side edge of the outer box front side plate or the outer box rear side plate and is close to the inner wall of the outer box left side plate or the outer box right side plate. The outer box first side cover plate and the outer box second side cover plate are respectively bent towards the inside of the outer box body and clamp the support pieces between the outer box first side cover plate and the outer box left side plate and between the outer box second side cover plate and the outer box right side plate.

[0016] The glue-free packaging box of the present application closes the box opening through the first top plate of the outer box and the second top plate of the outer box, and the two are snap-fitted. In cooperation with both sides of the box body, the design of sandwiching and supporting the support piece by the first side cover plate of the outer box and the left side plate of the outer box, and the second side cover plate of the outer box and the right side plate of the outer box makes the overall outer box sealed firmly. After being buckled, the outer box can only be opened by destroying the structure. It has the advantages of simple structure, glue-free self-locking environmental protection, and reliable sealing. The glue-free packaging box is designed inspired by the airplane box. The box body is formed by sandwiching and fixing the support piece through the cooperation of the two side cover plates on the left and right sides with the left side plate of the outer box and the right side plate of the outer box. The first top plate of the outer box and the second top plate of the outer box double-insure to close the box opening and prevent the items in the box from falling out. When the two are snap-fitted, the locking tongue needs to be folded inward at a certain angle. The first snap-fitting plate of the outer box and the locking tongue need to be aligned with the first main snap-fitting groove of the outer box and the first sub-snap-fitting groove of the outer box respectively to achieve snap-fitting. After snap-fitting, the locking tongue automatically rebounds and opens inside the outer box. The locking tongue cannot slide out of the first sub-snap-fitting groove of the outer box without being folded at a certain angle, so as to achieve the purpose of glue-free self-locking. It is possible to seal the express packaging box without using BOPP non-drying tape. The box body is firm, and the packaging waste will not cause environmental pollution. It is convenient to lock the box and is firmly sealed. The outer box body needs to be damaged to open the box again.

[0017] The outer end of the locking tongue is arc-shaped.

[0018] The preferred design of the shape of the locking tongue makes the snap-fitting between the locking tongue and the first sub-snap-fitting groove of the outer box smoother.

[0019] The outer box further includes second snap-fitting plates respectively connected to the middle parts of the left and right edges of the first top plate of the outer box. In the middle of the connection between the first side cover plate of the outer box and the left side plate of the outer box and the middle of the connection between the second side cover plate of the outer box and the right side plate of the outer box, there are second snap-fitting grooves along the extending direction of the connection, which are adapted to the position, length and width of the second snap-fitting plates. The second snap-fitting plates can pass through the second snap-fitting grooves and extend between the first side cover plate of the outer box and the left side plate of the outer box and between the second side cover plate of the outer box and the right side plate of the outer box.

[0020] The cooperation between the second snap-fitting plates and the second snap-fitting grooves improves the overall firmness and sealing performance of the outer box.

[0021] Along the extending direction of the connection between the first snap-fitting plate of the outer box and the first top plate of the outer box, there is a first tearable line formed by virtual hole lines connecting between the two ends of the connection. On the first top plate of the outer box, there is a second tearable line formed by virtual hole lines bending beside the connection between the first snap-fitting plate of the outer box and the first top plate of the outer box. Both ends of the second tearable line intersect with the first tearable line and the arc opening of the second tearable line faces the first snap-fitting plate of the outer box.

[0022] The setting of the first tearable line and the second tearable line makes it easier to open the box. The shape of the second tearable line can be semi-circular, triangular or other shapes.

[0023] The inner lining is an inner lining formed by bending corrugated paper for placing bottle-shaped objects. The inner lining box body consists of an inner lining bottom plate and inner lining left buffer units, inner lining right buffer units, inner lining front buffer units, and inner lining rear buffer units that are respectively surrounded and connected above the left, right, front, and rear sides of the inner lining bottom plate. The inner lining left buffer units, inner lining right buffer units, inner lining front buffer units, and inner lining rear buffer units are all hollow. The distance between the inner lining front buffer unit and the inner lining rear buffer unit is less than the length of the bottle-shaped object; at least one pair of fixing holes for fixing the position of the bottle-shaped object are provided on the inner lining front buffer unit and the inner lining rear buffer unit. Each pair of fixing holes includes a first fixing hole provided on the inner lining front buffer unit that is adapted to the shape and size of the top of the bottle-shaped object and a second fixing hole provided on the inner lining rear buffer unit that is adapted to the shape and size of the bottom of the bottle-shaped object and is coaxial with the first fixing hole. The bottle-shaped object extends its top and bottom into the inner lining front buffer unit and the inner lining rear buffer unit respectively through the first fixing hole and the second fixing hole.

[0024] The inner lining adopts a buffer design of one-piece forming and folding, and a special shape conforming to the bottled object is designed on the inner lining front buffer unit and the inner lining rear buffer unit to achieve the reinforcement treatment of the bottled object and prevent it from being knocked during transportation due to shaking. This inner lining has excellent and long-lasting buffer performance, is not easy to fail, can absorb the impacts generated by vibrations, drops, etc. during logistics transportation on the commodity, fix the commodity, prevent it from displacing, and it also does not produce plastic waste, being environmentally friendly.

[0025] The front buffer unit of the inner lining is formed by enclosing and connecting the first front side plate of the inner lining, the second front side plate of the inner lining, the third front side plate of the inner lining, and the bottom plate of the inner lining. The first front side plate of the inner lining and the third front side plate of the inner lining are arranged in parallel at intervals in the front-rear direction above the bottom plate of the inner lining and are perpendicular to the bottom plate of the inner lining. The second front side plate of the inner lining is located at the top of the front buffer unit of the inner lining and is respectively connected to the first front side plate of the inner lining and the third front side plate of the inner lining. The rear buffer unit of the inner lining is formed by enclosing and connecting the first rear side plate of the inner lining, the second rear side plate of the inner lining, the third rear side plate of the inner lining, and the bottom plate of the inner lining. The third rear side plate of the inner lining and the first rear side plate of the inner lining are arranged in parallel at intervals in the front-rear direction above the bottom plate of the inner lining and are perpendicular to the bottom plate of the inner lining. The second rear side plate of the inner lining is located at the top of the rear buffer unit of the inner lining and is respectively connected to the third rear side plate of the inner lining and the first rear side plate of the inner lining. The left buffer unit of the inner lining is formed by enclosing and connecting the first left side plate of the inner lining, the second left side plate of the inner lining, the third left side plate of the inner lining, and the bottom plate of the inner lining. The third left side plate of the inner lining and the first left side plate of the inner lining are arranged in parallel at intervals in the left-right direction and are connected above the bottom plate of the inner lining and are perpendicular to the bottom plate of the inner lining. The second left side plate of the inner lining is located at the top of the left buffer unit of the inner lining and is respectively connected to the third left side plate of the inner lining and the first left side plate of the inner lining. The right buffer unit of the inner lining is formed by enclosing and connecting the first right side plate of the inner lining, the second right side plate of the inner lining, the third right side plate of the inner lining, and the bottom plate of the inner lining. The third right side plate of the inner lining and the first right side plate of the inner lining are arranged in parallel at intervals in the left-right direction and are connected above the bottom plate of the inner lining and are perpendicular to the bottom plate of the inner lining. The second right side plate of the inner lining is located at the top of the right buffer unit of the inner lining and is respectively connected to the third right side plate of the inner lining and the first right side plate of the inner lining.

[0026] On the inner lining left buffer unit and the inner lining right buffer unit, at the positions corresponding to the inner lining third front side plate and the inner lining third rear side plate respectively, there are successively spaced inner lining front clamping grooves and inner lining rear clamping grooves opened along the front and rear directions. Each inner lining front clamping groove extends from the connection between the inner lining first left side plate and the inner lining second left side plate or the connection between the inner lining first right side plate and the inner lining second right side plate in a direction parallel to the connection between the inner lining second front side plate and the inner lining third front side plate to the inner lining third left side plate or the inner lining third right side plate, and extends along a direction perpendicular to the inner lining bottom plate on the inner lining third left side plate or the inner lining third right side plate to a position close to the inner lining bottom plate. The height of the inner lining front clamping groove is adapted to the height of the inner lining third front side plate; each inner lining rear clamping groove extends from the connection between the inner lining first left side plate and the inner lining second left side plate or the connection between the inner lining first right side plate and the inner lining second right side plate in a direction parallel to the connection between the inner lining second rear side plate and the inner lining third rear side plate to the inner lining third left side plate or the inner lining third right side plate, and extends along a direction perpendicular to the inner lining bottom plate on the inner lining third left side plate or the inner lining third right side plate to a position close to the inner lining bottom plate. The height of the inner lining rear clamping groove is adapted to the height of the inner lining third rear side plate; the inner lining front buffer unit and the inner lining rear buffer unit respectively realize the fixation of the relative positions with the inner lining left buffer unit and the inner lining right buffer unit through the clamping cooperation between the inner lining third front side plate and the inner lining front clamping groove, and the clamping cooperation between the inner lining third rear side plate and the inner lining rear clamping groove.

[0027] The clamping cooperation between the inner lining front buffer unit, the inner lining rear buffer unit and the inner lining left buffer unit, the inner lining right buffer unit greatly improves the overall strength and firmness of the inner lining.

[0028] At least one inner lining left insertion ear and at least one inner lining right insertion ear are respectively provided at the bottoms of the inner lining third left side plate and the inner lining third right side plate. Inner lining clamping grooves respectively adapted to the positions and sizes of the inner lining left insertion ears and the inner lining right insertion ears are provided on the inner lining bottom plate. The inner lining left insertion ear and the inner lining right insertion ear can be in clamping cooperation with the corresponding inner lining clamping grooves.

[0029] The clamping setting of the inner lining left insertion ear, the inner lining right insertion ear and the inner lining clamping groove can improve the strength of the inner lining left buffer unit and the inner lining right buffer unit.

[0030] The outer box further includes an outer box first connecting piece and an outer box second connecting piece respectively fixedly connected to the bottom edges of the outer box first side cover plate and the outer box second side cover plate; when the inner lining is installed in the outer box, both the outer box first connecting piece and the outer box second connecting piece are clamped between the inner lining bottom plate and the outer box bottom plate.

[0031] The setting of the outer box first connecting piece and the outer box second connecting piece can further improve the strength of the outer box body.

[0032] Compared with the prior art, the present utility model application has the following advantages:

[0033] 1) The glue-free packaging box of the present application closes the box opening through the first top plate and the second top plate of the outer box, and the two are snap-fitted. Together with the design of sandwiching and supporting the support sheet by the first side cover plate and the left side plate of the outer box, and the second side cover plate and the right side plate of the outer box on both sides of the box body, the overall seal of the outer box is firm, and the outer box can only be opened after destroying the structure after being buckled, which has the advantages of simple structure, glue-free self-locking environmental protection and reliable sealing;

[0034] 2) The preferred design of the shape of the locking tongue makes the snap-fitting between the locking tongue and the first snap-in slot of the outer box smoother;

[0035] 3) The cooperation between the second snap-in plate and the second snap-in slot of the outer box improves the overall firmness and sealing performance of the outer box;

[0036] 4) The setting of the first tearable line and the second tearable line makes it easier to open the box;

[0037] 5) The inner lining has excellent and long-lasting cushioning performance, is not easy to fail, can absorb the impacts on the goods caused by vibrations, drops, etc. during the logistics transportation process, fix the goods and prevent them from shifting, and it will not produce plastic waste, which is environmentally friendly;

[0038] 6) The snap-fitting of the front cushioning unit, the rear cushioning unit, the left cushioning unit and the right cushioning unit of the inner lining greatly improves the overall strength and firmness of the inner lining. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a plan view of the outer box of the glue-free packaging box described in the present utility model;

[0040] Figure 2 is a plan view of the inner lining of the glue-free packaging box described in the present utility model;

[0041] Figure 3 is a three-dimensional view of the assembled state of the glue-free packaging box described in the present utility model Figure 1 ;

[0042] Figure 4 is a three-dimensional view of the assembled state of the glue-free packaging box described in the present utility model Figure 2 ;

[0043] Figure 5 is a partial schematic view of the buckling action of the outer box of the glue-free packaging box described in the present utility model Figure 1 ;

[0044] Figure 6 is a partial schematic view of the buckling action of the outer box of the glue-free packaging box described in the present utility model Figure 2 ;

[0045] Figure 7It is the LH cross-sectional view of the outer box (in the folded state) of the glue-free packaging box described in the present utility model;

[0046] Figure 8 It is the BH cross-sectional view of the outer box (in the folded state) of the glue-free packaging box described in the present utility model;

[0047] Figure 9 It is the LH cross-sectional view of the inner lining (in the folded state) of the glue-free packaging box described in the present utility model;

[0048] Figure 10 It is the BH cross-sectional view of the inner lining (in the folded state) of the glue-free packaging box described in the present utility model;

[0049] Figure 11 It is the detection result of the corner drop (observation direction: front) of the free fall test of the glue-free packaging box described in the present utility model;

[0050] Figure 12 It is the detection result of the corner drop (observation direction: back) of the free fall test of the glue-free packaging box described in the present utility model;

[0051] Figure 13 It is the detection result of the surface 1 (observation direction: front) of the free fall test of the glue-free packaging box described in the present utility model;

[0052] Figure 14 It is the detection result of the surface 1 (observation direction: back) of the free fall test of the glue-free packaging box described in the present utility model;

[0053] Figure 15 It is the detection result of the surface 2 (observation direction: front) of the free fall test of the glue-free packaging box described in the present utility model;

[0054] Figure 16 It is the detection result of the surface 2 (observation direction: back) of the free fall test of the glue-free packaging box described in the present utility model;

[0055] Figure 17 It is the detection result of the surface 3 (observation direction: front) of the free fall test of the glue-free packaging box described in the present utility model;

[0056] Figure 18 It is the detection result of the surface 3 (observation direction: back) of the free fall test of the glue-free packaging box described in the present utility model;

[0057] Figure 19 It is the detection result of the edge 1 (observation direction: front) of the free fall test of the glue-free packaging box described in the present utility model;

[0058] Figure 20 It is the detection result of the edge 1 (observation direction: back) of the free fall test of the glue-free packaging box described in the present utility model;

[0059] Figure 21 It is the test result of edge 2 (observation direction: front) of the free fall test of the glue-free packaging box described in the present utility model;

[0060] Figure 22 It is the test result of edge 2 (observation direction: back) of the free fall test of the glue-free packaging box described in the present utility model;

[0061] Figure 23 It is the test result of edge 3 (observation direction: front) of the free fall test of the glue-free packaging box described in the present utility model;

[0062] Figure 24 It is the test result of edge 3 (observation direction: back) of the free fall test of the glue-free packaging box described in the present utility model.

[0063] Label description:

[0064] Outer box 1, inner lining 2, outer box bottom plate 1-1, outer box front side plate 1-2, outer box rear side plate 1-3, outer box left side plate 1-4, outer box right side plate 1-5, outer box first top plate 1-6, outer box second top plate 1-7, outer box first clamping plate 1-8, locking tongue 1-9, outer box first main clamping groove 1-10, outer box first sub-clamping groove 1-11, outer box first side cover plate 1-12, outer box second side cover plate 1-13, support piece 1-14, outer box second clamping plate 1-15, outer box second clamping groove 1-16, first tearable line 1-17, second tearable line 1-18, outer box first connecting piece 1-19, outer box second connecting piece 1-20, inner lining bottom plate 2-1, first fixing hole 2-2, second fixing hole 2-3, inner lining first front side plate 2-4, inner lining second front side plate 2-5, inner lining third front side plate 2-6, inner lining first rear side plate 2-7, inner lining second rear side plate 2-8, inner lining third rear side plate 2-9, inner lining first left side plate 2-10, inner lining second left side plate 2-11, inner lining third left side plate 2-12, inner lining first right side plate 2-13, inner lining second right side plate 2-14, inner lining third right side plate 2-15, inner lining front clamping groove 2-16, inner lining rear clamping groove 2-17, inner lining left insertion ear 2-18, inner lining right insertion ear 2-19, inner lining clamping groove 2-20. Detailed implementation manners

[0065] Next, the technical solution of the present utility model will be clearly and completely described in conjunction with the accompanying drawings.

[0066] As Figures 1 - 10 shown, a glue-free packaging box described in the present utility model includes an outer box 1 and an inner lining 2 arranged inside the outer box 1;

[0067] The box body of the outer box 1 includes an outer box bottom plate 1-1, and an outer box front side plate 1-2, an outer box rear side plate 1-3, an outer box left side plate 1-4, and an outer box right side plate 1-5 that are respectively arranged and fixedly connected above the front, rear, left, and right side edges of the outer box bottom plate 1-1. At the top end of the outer box front side plate 1-2, there is fixedly connected an outer box first top plate 1-6 that can be folded up and down to open and close the upper opening of the outer box body. At the top end of the outer box rear side plate 1-3, there is fixedly connected an outer box second top plate 1-7 that can be folded up and down to open and close the upper opening of the outer box body;

[0068] The outer box 1 further includes an outer box first clamping plate 1-8 connected to the middle of the rear end edge of the outer box first top plate 1-6. The left and right ends of the outer box first clamping plate 1-8 are respectively connected with locking tongues 1-9 extending to the left and right sides. In the middle of the connection between the outer box second top plate 1-7 and the outer box rear side plate 1-3, there is an outer box first main clamping groove 1-10 arranged along the extension direction of the connection, which is adapted to the position of the outer box first clamping plate 1-8. On the outer box second top plate 1-7, there are also outer box first sub-clamping grooves 1-11 that respectively extend obliquely from both ends of the outer box first main clamping groove 1-10 towards the rear side edge and the left and right corresponding side edges on the same side of this end, and are adapted to the positions of the two locking tongues 1-9. The lengths and widths of the outer box first main clamping groove 1-10 and the outer box first sub-clamping grooves 1-11 are respectively adapted to the outer box first clamping plate 1-8 and the locking tongues 1-9. After the locking tongues 1-9 are bent, they can be respectively inserted into the outer box first sub-clamping grooves 1-11 and the outer box first main clamping groove 1-10 together with the outer box first clamping plate 1-8 and have a clearance fit in the movable state. And after the locking tongues 1-9 are inserted into the outer box body from the outer box first main clamping groove 1-10, they can be unfolded to keep the outer box body in a closed state;

[0069] The outer box 1 further includes an outer box first side cover plate 1-12 and an outer box second side cover plate 1-13 that are respectively fixedly connected to the top edges of the outer box left side plate 1-4 and the outer box right side plate 1-5, and four support pieces 1-14 arranged at the four corners inside the outer box body. Each support piece 1-14 is connected to the side edge of the outer box front side plate 1-2 or the outer box rear side plate 1-3 and is close to the inner wall of the outer box left side plate 1-4 or the outer box right side plate 1-5. The outer box first side cover plate 1-12 and the outer box second side cover plate 1-13 are respectively bent towards the inside of the outer box body and clamp the support pieces 1-14 between the outer box first side cover plate 1-12 and the outer box left side plate 1-4 and between the outer box second side cover plate 1-13 and the outer box right side plate 1-5.

[0070] The outer end of the locking tongue 1-9 is arc-shaped.

[0071] The outer box 1 further includes outer box second clamping plates 1-15 respectively connected to the middle parts of the left and right side edges of the first top plate 1-6 of the outer box. In the middle of the joints of the first side cover plate 1-12 of the outer box and the left side plate 1-4 of the outer box and the second side cover plate 1-13 of the outer box and the right side plate 1-5 of the outer box along the extending direction of the joints, outer box second clamping grooves 1-16 adapted to the position, length and width of the outer box second clamping plates 1-15 are provided. The outer box second clamping plates 1-15 can pass through the outer box second clamping grooves 1-16 and extend between the first side cover plate 1-12 of the outer box and the left side plate 1-4 and between the second side cover plate 1-13 of the outer box and the right side plate 1-5.

[0072] At the joint of the first clamping plate 1-8 of the outer box and the first top plate 1-6 of the outer box, a first tearable line 1-17 formed by virtual hole lines connecting the two ends of the joint is provided along the extending direction of the joint. On the first top plate 1-6 of the outer box, a second tearable line 1-18 formed by virtual hole lines bending beside the joint of the first clamping plate 1-8 of the outer box and the first top plate 1-6 is provided. Both ends of the second tearable line 1-18 intersect with the first tearable line 1-17 and the arc opening of the second tearable line 1-18 faces the first clamping plate 1-8 of the outer box.

[0073] The glue-free packaging box is characterized in that: the inner liner 2 is an inner liner for placing bottle-shaped objects formed by bending corrugated paper. The box body of the inner liner 2 consists of an inner liner bottom plate and inner liner left buffer units, inner liner right buffer units, inner liner front buffer units and inner liner rear buffer units respectively surrounded and connected above the left, right, front and rear sides of the inner liner bottom plate 2-1. The inner liner left buffer units, inner liner right buffer units, inner liner front buffer units and inner liner rear buffer units are all hollow. The distance between the inner liner front buffer unit and the inner liner rear buffer unit is less than the length of the bottle-shaped object; at least one pair of fixing holes for fixing the position of the bottle-shaped object are provided on the inner liner front buffer unit and the inner liner rear buffer unit. Each pair of fixing holes includes a first fixing hole 2-2 provided on the inner liner front buffer unit and adapted to the shape and size of the top of the bottle-shaped object and a second fixing hole 2-3 provided on the inner liner rear buffer unit and adapted to the shape and size of the bottom of the bottle-shaped object and coaxial with the first fixing hole 2-2. The bottle-shaped object extends its top and bottom into the inner liner front buffer unit and the inner liner rear buffer unit respectively through the first fixing hole 2-2 and the second fixing hole 2-3.

[0074] The front buffer unit of the inner lining is formed by enclosing and connecting the first front side plate 2-4 of the inner lining, the second front side plate 2-5 of the inner lining, the third front side plate 2-6 of the inner lining and the bottom plate 2-1 of the inner lining. The first front side plate 2-4 of the inner lining and the third front side plate 2-6 of the inner lining are arranged in parallel at intervals in the front-rear direction above the bottom plate 2-1 of the inner lining and are perpendicular to the bottom plate 2-1 of the inner lining. The second front side plate 2-5 of the inner lining is located at the top of the front buffer unit of the inner lining and is respectively connected to the first front side plate 2-4 of the inner lining and the third front side plate 2-6 of the inner lining; The rear buffer unit of the inner lining is formed by enclosing and connecting the first rear side plate 2-7 of the inner lining, the second rear side plate 2-8 of the inner lining, the third rear side plate 2-9 of the inner lining and the bottom plate 2-1 of the inner lining. The third rear side plate 2-9 of the inner lining and the first rear side plate 2-7 of the inner lining are arranged in parallel at intervals in the front-rear direction above the bottom plate 2-1 of the inner lining and are perpendicular to the bottom plate 2-1 of the inner lining. The second rear side plate 2-8 of the inner lining is located at the top of the rear buffer unit of the inner lining and is respectively connected to the third rear side plate 2-9 of the inner lining and the first rear side plate 2-7 of the inner lining; The left buffer unit of the inner lining is formed by enclosing and connecting the first left side plate 2-10 of the inner lining, the second left side plate 2-11 of the inner lining, the third left side plate 2-12 of the inner lining and the bottom plate 2-1 of the inner lining. The third left side plate 2-12 of the inner lining and the first left side plate 2-10 of the inner lining are arranged in parallel at intervals in the left-right direction and are connected above the bottom plate 2-1 of the inner lining and are perpendicular to the bottom plate 2-1 of the inner lining. The second left side plate 2-11 of the inner lining is located at the top of the left buffer unit of the inner lining and is respectively connected to the third left side plate 2-12 of the inner lining and the first left side plate 2-10 of the inner lining; The right buffer unit of the inner lining is formed by enclosing and connecting the first right side plate 2-13 of the inner lining, the second right side plate 2-14 of the inner lining, the third right side plate 2-15 of the inner lining and the bottom plate 2-1 of the inner lining. The third right side plate 2-15 of the inner lining and the first right side plate 2-13 of the inner lining are arranged in parallel at intervals in the left-right direction and are connected above the bottom plate 2-1 of the inner lining and are perpendicular to the bottom plate 2-1 of the inner lining. The second right side plate 2-14 of the inner lining is located at the top of the right buffer unit of the inner lining and is respectively connected to the third right side plate 2-15 of the inner lining and the first right side plate 2-13 of the inner lining;

[0075] On the inner lining left buffer unit and the inner lining right buffer unit, corresponding to the positions of the inner lining third front side plates 2-6 and the inner lining third rear side plates 2-9, there are respectively provided an inner lining front clamping groove 2-16 and an inner lining rear clamping groove 2-17 which are spaced apart in sequence from front to back. Each inner lining front clamping groove 2-16 extends from the connection of the inner lining first left side plate 2-10 and the inner lining second left side plate 2-11 or the connection of the inner lining first right side plate 2-13 and the inner lining second right side plate 2-14 in a direction parallel to the connection of the inner lining second front side plate 2-5 and the inner lining third front side plate 2-6 to the inner lining third left side plate 2-12 or the inner lining third right side plate 2-15, and extends on the inner lining third left side plate 2-12 or the inner lining third right side plate 2-15 in a direction perpendicular to the inner lining bottom plate 2-1 to a position close to the inner lining bottom plate 2-1. The height of the inner lining front clamping groove 2-16 is adapted to the height of the inner lining third front side plate 2-6; each inner lining rear clamping groove 2-17 extends from the connection of the inner lining first left side plate 2-10 and the inner lining second left side plate 2-11 or the connection of the inner lining first right side plate 2-13 and the inner lining second right side plate 2-14 in a direction parallel to the connection of the inner lining second rear side plate 2-8 and the inner lining third rear side plate 2-9 to the inner lining third left side plate 2-12 or the inner lining third right side plate 2-15, and extends on the inner lining third left side plate 2-12 or the inner lining third right side plate 2-15 in a direction perpendicular to the inner lining bottom plate 2-1 to a position close to the inner lining bottom plate 2-1. The height of the inner lining rear clamping groove 2-17 is adapted to the height of the inner lining third rear side plate 2-9; the inner lining front buffer unit and the inner lining rear buffer unit respectively realize the fixation of the relative positions with the inner lining left buffer unit and the inner lining right buffer unit through the clamping cooperation between the inner lining third front side plate 2-6 and the inner lining front clamping groove 2-16, and the clamping cooperation between the inner lining third rear side plate 2-9 and the inner lining rear clamping groove 2-17.

[0076] At least one inner lining left insertion ear 2-18 and at least one inner lining right insertion ear 2-19 are respectively provided at the bottoms of the inner lining third left side plate 2-12 and the inner lining third right side plate 2-15. Inner lining clamping grooves 2-20 which are adapted to the positions and sizes of the respective inner lining left insertion ears 2-18 and inner lining right insertion ears 2-19 are provided on the inner lining bottom plate 2-1. The inner lining left insertion ear 2-18 and the inner lining right insertion ear 2-19 can be in clamping cooperation with the corresponding inner lining clamping grooves 2-20.

[0077] The outer box 1 further includes an outer box first connecting piece 1-19 and an outer box second connecting piece 1-20 which are respectively fixedly connected to the bottom edges of the outer box first side cover plate 1-12 and the outer box second side cover plate 1-13; when the inner lining 2 is installed in the outer box, both the outer box first connecting piece 1-19 and the outer box second connecting piece 1-20 are clamped between the inner lining bottom plate 2-1 and the outer box bottom plate 1-1.

[0078] Experimental data:

[0079] Due to the functional requirements of the shipping express box, in order to ensure the buffering and transportation performance of the glue-free express box, the following performance tests were carried out on the glue-free packaging box in this case (Lo = 284mm, Bo = 292mm, Ho = 128mm):

[0080] I. Packaging free fall test experiment

[0081] During the transportation and handling of the packaged goods, vibration and impact are the main causes of product damage. Among various impact environments, free fall impact is the most direct factor that damages the packaged goods and is extremely harmful to the packaged goods. As an express packaging, the carton is required not to cause mechanical damage due to external impact or vibration during the entire transportation process, nor to open the outer packaging as the road surface undulates. Therefore, an actual transportation test was carried out on the carton. To verify whether the carton has good impact resistance and sealing reliability during multiple uses, a free fall test was first conducted. Detection method: Referring to GB / T4857.5, use a free fall testing machine to conduct a drop test on the packaged goods. The detection results of the corner drop (observation direction: front), corner drop (observation direction: back), face 1 (observation direction: front), face 1 (observation direction: back), face 2 (observation direction: front), face 2 (observation direction: back), face 3 (observation direction: front), face 3 (observation direction: back), edge 1 (observation direction: front), edge 1 (observation direction: back), edge 2 (observation direction: front), edge 2 (observation direction: back), edge 3 (observation direction: front), and edge 3 (observation direction: back) of the glue-free packaging box in this case are respectively as Figures 11 - 24 shown, and the overall detection results are shown in the following table:

[0082] Table 1 Free fall test results (this case)

[0083]

[0084] It can be seen that except for slight deformation of the corners and edges, there is no damage to other parts in the drop test results of the glue-free packaging box in this case.

[0085] II. Packaging compression experiment

[0086] The compressive strength of a corrugated cardboard box refers to the maximum pressure and deformation when a dynamic pressure is uniformly applied at a certain speed by a pressure testing machine until the box is damaged, generally measured in "N" (Newton). Compressive strength is one of the most important quality indicators of corrugated cardboard boxes. There are many influencing factors, mainly including raw material properties (such as paperboard basis weight, corrugation type, paperboard strength, and adhesive type), structural design (such as slotting, punching, and reinforcing rib structures), production and manufacturing (such as printing and score lines), and changes in the circulation and transportation environment (such as stacking, storage time, and relative humidity). Scholars at home and abroad have conducted a large number of studies on this. The basic principle of the compressive test is to place the test sample between the pressure plates of a cardboard box compressive testing machine and apply pressure until the test sample is damaged or a predetermined load and displacement value are reached. From this, three compressive test modes are derived, namely "measuring deformation under a fixed pressure", "measuring compressive force under a fixed deformation", and "maximum crushing force". Detection method of compressive strength: Refer to the standard GB / T4857.4 "Basic Tests for Packaged Transport Packages", and use a cardboard box compressive tester to conduct a compressive test on the empty box sample. The test results are as follows:

[0087] 1. Experiment of measuring deformation under a fixed pressure

[0088] Table 2 Effect of measuring deformation under a fixed pressure (recording 3 results)

[0089]

[0090] 2. Experiment of measuring compressive force under a fixed deformation

[0091] Table 3 Effect of measuring compressive force under a fixed deformation (recording 3 results)

[0092]

[0093] 3. Maximum crushing force experiment

[0094] Table 4 Effect of maximum crushing force test (recording 3 results)

[0095]

[0096]

[0097] It can be seen that the deformation amount of the glue-free packaging box in this case under a fixed pressure is smaller than that of the comparison sample, and the compressive force and maximum crushing force under a fixed deformation are both larger than those of the comparison sample. That is, the compressive effect of the glue-free packaging box in this case is better than that of the comparison sample.

[0098] III. Summary: The results of the free fall test show that the glue-free packaging box in this case has good buffering performance and sealing reliability; the results of the packaging (empty box) compressive experiment show that the glue-free packaging box in this case has good sealing performance and compressive protection.

Claims

1. A glue-free packaging box, characterized in that: It comprises an outer box (1) and an inner lining (2) arranged in the outer box (1); The outer box (1) box body comprises an outer box bottom plate (1-1) and an outer box front side plate (1-2), an outer box rear side plate (1-3), an outer box left side plate (1-4) and an outer box right side plate (1-5) respectively arranged and fixedly connected to the upper edges of the front, rear, left and right sides of the outer box bottom plate (1-1); a first outer box top plate (1-6) which can be folded up and down to open and close an opening on the outer box box body is fixedly connected to the top of the outer box front side plate (1-2); and a second outer box top plate (1-7) which can be folded up and down to open and close an opening on the outer box box body is fixedly connected to the top of the outer box rear side plate (1-3); The outer box (1) further comprises an outer box first clamping plate (1-8) connected to the middle of the edge of the rear end portion of the outer box first top plate (1-6); the left and right ends of the outer box first clamping plate (1-8) are respectively connected with locking tongues (1-9) extending to the left and right sides; the outer box second top plate (1-7) is provided with an outer box first clamping main groove (1-10) adapted to the position of the outer box first clamping plate (1-8) along the extending direction of the connection at the middle of the connection between the outer box second top plate (1-7) and the outer box rear side plate (1-3); the outer box second top plate (1-7) is also provided with left and right corresponding side edges extending from the two ends of the outer box first clamping main groove (1-10) to the rear edge and located on the same side of the end The outer box first clamping sub-groove (1-11) extends outwardly in an oblique direction and is adapted to the positions of the two locking tongues (1-9); the length and width of the outer box first clamping main groove (1-10) and the outer box first clamping sub-groove (1-11) are adapted to the outer box first clamping plate (1-8) and the locking tongue (1-9) respectively; after the locking tongue (1-9) is bent, it can be inserted into the outer box first clamping sub-groove (1-11) and the outer box first clamping main groove (1-10) together with the outer box first clamping plate (1-8) respectively and fit with a movable clearance; and the locking tongue (1-9) can be unfolded after being inserted from the outer box first clamping main groove (1-10) into the outer box body, so that the outer box body remains in a closed state; The outer box (1) further comprises an outer box first side cover plate (1-12) and an outer box second side cover plate (1-13) respectively fixedly connected to the top edges of the outer box left side plate (1-4) and the outer box right side plate (1-5), and four support plates (1-14) respectively arranged at the four corners of the outer box body, each support plate (1-14) is connected to the side edge of the outer box front side plate (1-2) or the outer box rear side plate (1-3), and is closely attached to the inner wall of the outer box left side plate (1-4) or the outer box right side plate (1-5), the outer box first side cover plate (1-12) and the outer box second side cover plate (1-13) are respectively bent into the outer box body and the support plates (1-14) are clamped between the outer box first side cover plate (1-12) and the outer box left side plate (1-4) and between the outer box second side cover plate (1-13) and the outer box right side plate (1-5).

2. The glue-free packaging box according to claim 1, characterized in that: The outer end of the locking tongue (1-9) is in an arc shape.

3. The glue-free packaging box according to claim 1, characterized in that: The outer box (1) further comprises an outer box second clamping plate (1-15) respectively connected to the middle of the left and right edges of the outer box first top plate (1-6), and an outer box second clamping groove (1-16) corresponding to the position, length and width of the outer box second clamping plate (1-15) is provided in the middle of the connection between the outer box first side cover plate (1-12) and the outer box left side plate (1-4) and the outer box second side cover plate (1-13) and the outer box right side plate (1-5) along the extension direction of the connection, and the outer box second clamping plate (1-15) can pass through the outer box second clamping groove (1-16) and extend into between the outer box first side cover plate (1-12) and the outer box left side plate (1-4) and between the outer box second side cover plate (1-13) and the outer box right side plate (1-5).

4. The glue-free packaging box according to claim 1, characterized in that: A first tearable line (1-17) is provided at a connection point between a first clamping plate (1-8) of an outer box and a first top plate (1-6) of an outer box along an extension direction of the connection point, which is composed of a virtual hole line connected between two ends of the connection point; a second tearable line (1-18) is provided on the first top plate (1-6) of the outer box, which is composed of a virtual hole line bent to the side of the connection point between the first clamping plate (1-8) of the outer box and the first top plate (1-6); both ends of the second tearable line (1-18) intersect with the first tearable line (1-17), and the arc opening of the second tearable line (1-18) faces the first clamping plate (1-8) of the outer box.

5. The glue-free packaging box according to claim 1, characterized in that: The liner (2) is a liner formed by bending corrugated paper for placing bottle-like objects. The liner (2) box body is composed of an inner bottom plate and an inner liner left buffer unit, an inner liner right buffer unit, an inner liner front buffer unit and an inner liner rear buffer unit respectively connected to the upper left and right front and rear sides of the inner bottom plate (2-1). The inner liner left buffer unit, the inner liner right buffer unit, the inner liner front buffer unit and the inner liner rear buffer unit are all hollow. The spacing between the inner liner front buffer unit and the inner liner rear buffer unit is less than the length of the bottle-like object. The inner liner front buffer unit and the inner liner rear buffer unit are respectively connected to the upper left and right front and rear sides of the inner liner bottom plate (2-1). The buffer unit is provided with at least one pair of fixing holes for fixing the position of the bottle-like object, each pair of fixing holes comprises a first fixing hole (2-2) provided on the front buffer unit of the liner and adapted to the shape and size of the top of the bottle-like object, and a second fixing hole (2-3) provided on the rear buffer unit of the liner and adapted to the shape and size of the bottom of the bottle-like object and coaxial with the first fixing hole (2-2), and the bottle-like object extends its top and bottom into the front buffer unit of the liner and the rear buffer unit of the liner respectively through the first fixing hole (2-2) and the second fixing hole (2-3).

6. The glue-free packaging box according to claim 5, characterized in that: The lining front buffer unit is formed by surrounding and connecting the lining first front side plate (2-4), the lining second front side plate (2-5), the lining third front side plate (2-6) and the lining bottom plate (2-1); the lining first front side plate (2-4) and the lining third front side plate (2-6) are arranged in parallel and spaced order above the lining bottom plate (2-1) in the front-to-back direction and are perpendicular to the lining bottom plate (2-1); the lining second front side plate (2-5) is located at the top of the lining front buffer unit and is respectively connected to the lining first front side plate (2-4) and the lining third front side plate (2-6); the lining rear buffer The unit is formed by connecting and enclosing a first rear side plate (2-7) of the lining, a second rear side plate (2-8) of the lining, a third rear side plate (2-9) of the lining and an inner bottom plate (2-1); the third rear side plate (2-9) of the lining and the first rear side plate (2-7) of the lining are arranged in parallel and spaced order above the inner bottom plate (2-1) in the front-to-back direction and are perpendicular to the inner bottom plate (2-1); the second rear side plate (2-8) of the lining is located at the top of the rear buffer unit of the lining and is respectively connected to the third rear side plate (2-9) of the lining and the first rear side plate (2-7); the left buffer unit of the lining is formed by connecting and enclosing a first rear side plate (2-9) of the lining and the inner bottom plate (2-1); the third rear side plate (2-9) of the lining and the first rear side plate (2-7) of the lining are arranged in parallel and spaced order above the inner bottom plate (2-1) in the front-to-back direction and are perpendicular to the inner bottom plate (2-1); the second rear side plate (2-8) of the lining is located at the top of the rear buffer unit of the lining and is respectively connected to the third rear side plate (2-9) of the lining and the first rear side plate (2-7); the left buffer unit of the lining is formed by connecting and enclosing a first rear side plate (2-7) of the lining The first left side plate (2-10), the second left side plate (2-11) of the lining, the third left side plate (2-12) of the lining and the inner bottom plate (2-1) are connected to form a surrounding structure; the third left side plate (2-12) of the lining and the first left side plate (2-10) of the lining are arranged in parallel and spaced apart in the left-right direction and connected above the inner bottom plate (2-1), and are perpendicular to the inner bottom plate (2-1); the second left side plate (2-11) of the lining is located at the top of the left buffer unit of the lining and is respectively connected to the third left side plate (2-12) of the lining and the first left side plate (2-10) of the lining; the right buffer unit of the lining The unit is formed by connecting and enclosing a first right side plate (2-13) of the lining, a second right side plate (2-14) of the lining, a third right side plate (2-15) of the lining and an inner bottom plate (2-1); the third right side plate (2-15) of the lining and the first right side plate (2-13) of the lining are arranged in parallel and spaced relation in the left-right direction and connected above the inner bottom plate (2-1), and are perpendicular to the inner bottom plate (2-1); the second right side plate (2-14) of the lining is located at the top of the right buffer unit of the lining and is connected to the third right side plate (2-15) of the lining and the first right side plate (2-13) of the lining respectively; The positions of the corresponding third front side plates (2-6) and the third rear side plates (2-9) of the lining left buffer unit and the lining right buffer unit are respectively provided with front lining snap-in grooves (2-16) and rear lining snap-in grooves (2-17) which are arranged in sequence along the front and back. Each front lining snap-in groove (2-16) is formed by the connection between the first left side plate (2-10) and the second left side plate (2-11) of the lining or the connection between the first right side plate (2-13) and the second right side plate (2-14) of the lining, and is parallel to the inner lining. The direction of the connection between the second front side plate (2-5) of the lining and the third front side plate (2-6) of the lining extends to the third left side plate (2-12) of the lining or the third right side plate (2-15) of the lining, and extends on the third left side plate (2-12) of the lining or the third right side plate (2-15) in a direction perpendicular to the inner bottom plate (2-1) to a position close to the inner bottom plate (2-1), and the height of the front snap-in groove (2-16) of the lining is adapted to the height of the third front side plate (2-6); each rear snap-in groove (2 -17) are extended from the connection between the first left side plate (2-10) and the second left side plate (2-11) of the lining or the connection between the first right side plate (2-13) and the second right side plate (2-14) of the lining in a direction parallel to the connection between the second rear side plate (2-8) and the third rear side plate (2-9) of the lining to the third left side plate (2-12) or the third right side plate (2-15) of the lining, and are vertically connected to the third left side plate (2-12) or the third right side plate (2-15) of the lining. The liner rear snap-in groove (2-17) extends perpendicularly to the direction of the liner bottom plate (2-1) to a position close to the liner bottom plate (2-1), and the height of the liner rear snap-in groove (2-17) is adapted to the height of the liner third rear side plate (2-9); the liner front buffer unit and the liner rear buffer unit are fixed in relative position to the liner left buffer unit and the liner right buffer unit respectively through snap-fitting between the liner third front side plate (2-6) and the liner front snap-in groove (2-16), and snap-fitting between the liner third rear side plate (2-9) and the liner rear snap-in groove (2-17).

7. The glue-free packaging box according to claim 6, characterized in that: At least one liner left plug ear (2-18) and at least one liner right plug ear (2-19) are respectively provided at the bottom of the third left side plate (2-12) and the third right side plate (2-15); the inner liner bottom plate (2-1) is provided with liner clamping grooves (2-20) respectively adapted to the positions and sizes of the liner left plug ears (2-18) and the liner right plug ears (2-19); the liner left plug ears (2-18) and the liner right plug ears (2-19) can be clamped and matched with the corresponding liner clamping grooves (2-20).

8. The glue-free packaging box according to claim 5, characterized in that: The outer box (1) further comprises an outer box first connecting piece (1-19) and an outer box second connecting piece (1-20) which are respectively fixedly connected to the bottom edges of the outer box first side cover plate (1-12) and the outer box second side cover plate (1-13); when the inner liner (2) is installed in the outer box, the outer box first connecting piece (1-19) and the outer box second connecting piece (1-20) are both clamped between the inner bottom plate (2-1) and the outer box bottom plate (1-1).

Images