CN216186768U - Folding carton capable of saving materials - Google Patents

Abstract

The utility model provides a material-saving folding carton which is square in a folding state and comprises two opposite side plates, wherein end inner plates extend outwards from the side plates, and the width of the end inner plates along the extending direction is gradually increased to be larger than that of the side plates; in the folded state, both ends of the maximum size position of the end inner plate are respectively pressed by the front inner plate and the rear plate to fix the position of the end inner plate. Based on the technical scheme of the utility model, the expansion size of the carton can be effectively reduced, materials are saved, the carton structure is suitable for more carton production equipment, the end inner plate can be limited without arranging a limiting rib on the end inner plate and arranging a clamping groove matched with the limiting rib on the bottom plate, the production process is simplified, the production cost is saved, and the production efficiency is improved.

Description

Folding carton capable of saving materials

Technical Field

The utility model relates to the technical field of packaging, in particular to a folding carton capable of saving materials.

Background

The carton is the most widely used packaging product in modern society, it is visible everywhere in life, and along with the further enhancement of people's environmental protection consciousness, the folding carton is widely used in the packing of medicine, food, cigarette and handicraft, current folding carton is for covering the curb plate flap, set up spacing muscle and set up corresponding spacing groove on the bottom plate in end inner panel one side usually, and the length size of end inner panel and curb plate sets up to equal, approximately equals folding packing box height, fix the end inner panel on the bottom plate with this, therefore the length of packing box expansion size seems great, not only lead to the carton manufacturing cost higher, and the producer's equipment of many production packing boxes is less, when the expansion size of packing box is too big, equipment can't produce, influence the production progress.

SUMMERY OF THE UTILITY MODEL

To the problem among the above-mentioned prior art, this application provides a folding carton that can save material, can simplify the technology step, improves production efficiency, reduces folding carton's expansion size, reduces required production material, is applicable to more carton processing equipment.

The folding carton capable of saving materials is square in a folded state and comprises two opposite side plates, end inner plates extend outwards from the side plates, and the width of the end inner plates along the extending direction is gradually increased to be larger than that of the side plates; fold condition under, the both ends of the maximum dimension department of end inner panel are extruded by preceding inner panel and back plate respectively, in order to fix the position of end inner panel, because folding during the carton, preceding inner panel with the back plate can be because of self weight with the bottom plate forms the obtuse angle, and the right angle state under the non-ideal condition, the width of end inner panel along extending direction increases gradually to being greater than the width of curb plate, the width of open end are greater than the width of bottom, and the packing box inner wall after the shaping is spacing in folding in-process end inner panel interference like this can avoid the end inner panel to bounce, leads to the packing box to present loose state.

In one embodiment, a length of the end inner panel is smaller than a length of the side panel in an extending direction of the end inner panel; through this embodiment, can reduce the expansion size of folding carton, reduce the production material, can be fit for more production facility production simultaneously.

In one embodiment, in the folded state, the front inner panel and the rear panel are connected by a two-sided locking structure; through the embodiment, the front inner plate and the rear plate can be folded to be kept in the upright state by using the locking structure when the carton is folded.

In one embodiment, the latch structure includes a first connection portion on the front inner panel and a second connection portion on the rear panel; under folded state, first connecting portion with the second connecting portion extend towards the direction that is close to each other, and the terminal mutual contact and the closure of the two, through this embodiment, first connecting portion with the second connecting portion are drawn close each other and are overlapped, and the overlap portion contacts and the closure for locking structural stability is high, is difficult for appearing the condition of unblock by oneself.

In an embodiment, in folded state, the curb plate is located the outside of closure, the end inner panel is relative the curb plate towards inside one side of carton is buckled to being located the inboard of closure, through this embodiment, turns over the end inner panel to the inboard of closure, not only can cover the closure, can also fix the position of end inner panel, makes it keep vertical state under folded state.

In one embodiment, there is a transition between the side panel and the end inner panel, the width of the transition matching the thickness of the closure; under folded state, the curb plate the transition portion and the end inner panel surrounds jointly locking structure, through this embodiment, the transition portion that sets up is convenient for the end inner panel can not be because of locking structure's thickness can't keep vertical state when inwards buckling.

In one embodiment, the first connecting portion has a first locking opening thereon, and the second connecting portion has a second locking opening thereon; in the folded state, the opening portions of the first locking opening and the second locking opening correspond to each other up and down, the corresponding portions of the first connecting portion and the second connecting portion are locked to the locking openings of the other side through the opening portions, and the locking openings corresponding to each other up and down are used for locking through the implementation mode.

In one embodiment, the locking opening is further provided with a horn-shaped guide structure, and the horn-shaped guide structure enables the locking structure to quickly complete locking when the carton is folded, so that the carton can be conveniently disassembled and assembled.

In one embodiment, the locking structure comprises a main plate and a hook piece, the main plate is connected with the hook piece, the mouth part is formed by a gap between the main plate and the top of the hook piece, and the locking opening is formed by extending the mouth part obliquely outwards.

In one embodiment, the end inner panel has a width of 0.5 to 0.8 times the width of the side panel in the extending direction of the end inner panel; through this embodiment for guarantee the assembly effect of carton and under the condition that the end inner panel can shelter from the curb plate flap of closure, reduce the size length of end inner panel, thereby reduce the expansion size of carton, save material.

The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the utility model is achieved.

Compared with the prior art, the folding carton capable of saving materials provided by the utility model at least has the following beneficial effects:

(1) the expansion size of the carton can be effectively reduced, materials are saved, and the carton production equipment can be suitable for more cartons.

(2) The locking structure who sets up can make the carton need not sticky tape or glue etc. at folding in-process, practices thrift the cost, and the locking mouth is the loudspeaker form, can improve the folding efficiency of carton.

(3) The end inner plate can be limited without arranging a limiting rib on the end inner plate and arranging a clamping groove matched with the limiting rib on the bottom plate, so that the production process is simplified, the production cost is saved, and the production efficiency is improved.

Drawings

The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

FIG. 1 shows a schematic view of the carton of the present invention in an expanded configuration;

FIG. 2 shows a schematic view of the folded carton of the present invention;

FIG. 3 shows a partial schematic view at A in FIG. 1;

FIG. 4 is a schematic view of a first connection portion according to the present invention;

FIG. 5 is a schematic structural view showing the same side of the closure of the present invention folded together in an unlocked state;

in the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Reference numerals:

1-a front inner panel; 2-a rear plate; 3-side plate; 4-a first connection; 5-a second connecting portion; 6-end inner plate; 7-a transition; 401-main board; 402-a hook sheet; 403-mouth; 404-guide structure.

Detailed Description

The utility model will be further explained with reference to the drawings.

Fig. 1 shows a schematic structural view of the foldable material-saving carton of the present invention when unfolded, which is square in a folded state and includes two opposite side panels 3, the side panels 3 are extended outward by end inner panels 6, and the width of the end inner panels 6 in the extending direction is gradually increased to be larger than that of the side panels 3; under fold condition, the both ends of the maximum dimension department of end inner panel 6 are extruded by preceding inner panel 1 and back plate 2 respectively, with stiff end inner panel 6's position, because when folding the carton, preceding inner panel 1 and back plate 2 can form the obtuse angle because of self weight and bottom plate, and the right angle state under the non-ideal condition, set up end inner panel 6 into trapezium structure, curb plate 3 is kept away from to its longer base, the width of open end is greater than the width of bottom, the packing box inner wall after the shaping is spacing in folding in-process end inner panel 6 interference like this, can avoid end inner panel 6 to bounce, lead to the packing box to present loose state.

It should be noted that, as shown in fig. 2, the width of the open end refers to the width of the side away from the bottom plate in the structure of the front inner panel 1, the rear panel 2 and the side panel 3 in the folded state, and the width of the bottom end refers to the width of the bottom plate.

In one embodiment, the length of the end inner panel 6 in the extending direction of the end inner panel 6 is smaller than the length of the side panel 3; the unfolding size of the folding carton can be reduced, production materials are reduced, and the folding carton can be suitable for production of more production equipment.

It should be noted that fig. 3 shows a partial schematic view of a position a in fig. 1, where the width of the end inner panel 6 is a, the width of the side panel 3 is b, generally speaking, in the carton in the unfolded state, the bottom panel and the side panels 4 on both sides of the carton are taken as a part of the overall unfolded panel with the largest dimension length, and the a and b dimensions of the conventional carton are almost equal and approximately equal to the height of the folded carton, and in the processing process, an appropriate processing device is often selected according to the largest dimension of the carton, that is, the existing carton has a larger unfolded dimension, which not only consumes more material, but also the devices of many manufacturers cannot produce cartons with larger dimensions, which has certain limitations.

In one embodiment, in the folded state, the front inner plate 1 and the rear plate 2 are connected through a locking structure at two sides; the front inner panel 1 and the rear panel 2 can be kept upright after being folded when the carton is folded by using a locking structure.

In one embodiment, the latch structure includes a first connecting portion 4 on the front inner panel 1 and a second connecting portion 5 on the rear panel 2; under folding condition, the first connecting part 4 and the second connecting part 5 extend towards the direction close to each other, the tail ends of the first connecting part 4 and the second connecting part 5 are mutually contacted and locked, the first connecting part 4 and the second connecting part 5 are mutually closed and overlapped, and the overlapped parts are contacted and locked, so that the stability of the locking structure is high, and the situation of self-unlocking is not easy to occur.

In one embodiment, in the folded state, the side panels 3 are located outside the locking structure, the end inner panel 6 is bent to the inside of the locking structure toward the side of the carton opposite to the side panels 3, and the end inner panel 6 is folded to the inside of the locking structure, so that the locking structure can be covered, and the position of the end inner panel 6 can be fixed to keep the vertical state in the folded state.

In one embodiment, the locking opening further has a flared guide structure 404, and the flared guide structure 404 enables the locking structure to quickly complete the locking when the carton is folded, thereby facilitating the disassembly and assembly of the carton.

In one embodiment, there is a transition 7 between the side panel 3 and the end inner panel 6, the width of the transition 7 matching the thickness of the locking structure; in a folded state, the side plates 3, the transition portions 7 and the end inner plates 6 together surround the locking structure, and the transition portions are arranged so that the end inner plates cannot be kept in a vertical state due to the thickness of the locking structure when being bent inwards.

In one embodiment, the first connecting portion 4 has a first locking opening thereon, and the second connecting portion 5 has a second locking opening thereon; in the folded state, the mouth parts of the first locking opening and the second locking opening correspond up and down, and the corresponding parts of the first connecting part 4 and the second connecting part 5 are locked into the locking openings of the other part through the mouth parts 403, and are locked by the locking openings corresponding up and down.

In one embodiment, the locking structure comprises a main plate 401 and a hook piece 402, the main plate 401 is connected with the hook piece 402, a mouth part 403 is formed by a gap between the main plate 401 and the top of the hook piece 402, and the locking opening is formed by the mouth part 403 extending obliquely outwards.

In an embodiment, fig. 3 shows a partial schematic view of a position a in fig. 1, a length dimension of a longer bottom side of the end inner plate 6 is n, a length dimension of a shorter bottom plate side of the end inner plate 6 is m, as a preferred embodiment, the length dimension m of the shorter bottom plate side of the end inner plate 6 plus a thickness of a paperboard is the length dimension n of the longer bottom side of the end inner plate 6, generally, the thickness of a double corrugated paperboard is 5-6 mm, and the thickness of a single corrugated paperboard is 2-4 mm, so that the phenomena of bounce of the end inner plate and loose packing boxes can be effectively prevented, and meanwhile, the situation that the end inner plate 6 is difficult to be installed in a carton box can not occur.

In one embodiment, a guiding structure 404 is disposed on a side of the top of the hook piece 402 close to the main board 401, so that the first connecting portion 4 and the second connecting portion 5 on the same side can be quickly locked together, and the assembly efficiency of the folding carton is improved.

As shown in fig. 4, the angle between the guide structure 404 and the plane of the main plate 401 is θ, and in a preferred embodiment, the angle of θ is 20 to 45 °.

In one embodiment, as shown in fig. 4, the mouth 403 of the locking opening has a certain depth h, which can prevent the first connecting part or the second connecting part from being withdrawn along the locking opening after locking.

In one embodiment, the width of the mouth 403 is less than or equal to the thickness of the carton board, and preferably, the width of the mouth 403 is less than the thickness of the carton board by 0-2 mm, so that the locking structures on the same side can be locked together conveniently.

In one embodiment, the end inner panels 6 are connected to the side panels 3 by transition portions 7, the transition portions 7 being provided to facilitate the end inner panels 6 being folded completely to the inner walls of the carton.

In one embodiment, the maximum dimension length of the overlapped and unhooked locking structures on the same side is smaller than the length of the bottom plate in the same direction.

It should be noted that, as shown in fig. 5, the state after the locking structures on the same side are overlapped and not hooked is shown, the sum of the sizes of the folded first connecting portion 4 and the folded second connecting portion 5 should be smaller than the width of the packing box, i.e. d + e < m, where m is the width of the middle bottom plate shown in fig. 3, so that when the carton is folded, the first connecting portion 4 and the second connecting portion 5 on the same side are hooked together, and the situation that the carton is loosened when the carton is folded can be further avoided.

In one embodiment, the width of the end inner panel 6 is 0.5 to 0.8 times the width of the side panel 3 in the extending direction of the end inner panel 6; the size and the length of the end inner plate are reduced under the condition that the assembling effect of the carton and the condition that the end inner plate can shield the locked side plate flaps are guaranteed, so that the expansion size of the carton is reduced, and materials are saved, as shown in fig. 1, the maximum size of the expanded carton is the length of the bottom plate plus the widths of the two side plates 3 and the end inner plate 6 extending outwards from the side plates 3, namely the maximum size of the expanded carton is the length +2a +2b of the bottom 1, and compared with the existing carton, the maximum size of the expanded carton is reduced by 0.4-1 width of the side plates 3.

The folding method of the carton of the utility model comprises the following steps: as shown in fig. 1 and fig. 2, the front inner panel 1 and the rear panel 2 are folded upwards along two sides of the bottom plate, the first connecting portion 4 connected with the front inner panel 1 and the second connecting portion 5 connected with the rear panel 2 at the same side are folded along the crease line and locked together, the side panel 3 is folded upwards along the crease line, the end inner panel 6 is folded downwards along the crease line of the transition portion 7, the dustproof flap is folded inwards along the crease line connected with the cover plate, the cover plate is folded downwards along the crease line connected with the rear panel, the front panel is folded downwards along the crease line connected with the cover plate and pressed into the gap between the locking structure and the side panel 3 along the inner side wall of the box body, and the front flap is folded inwards while inserted into the gap between the locking structure and the side panel 3.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Although the utility model herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims (10)

1. A material-saving folding carton which is square in a folded state is characterized by comprising two opposite side plates, wherein end inner plates extend outwards from the side plates, and the width of the end inner plates along the extending direction is gradually increased to be larger than that of the side plates;

in the folded state, both ends of the maximum size position of the end inner plate are respectively pressed by the front inner plate and the rear plate to fix the position of the end inner plate.

2. The material saving folded carton according to claim 1, wherein a length of the end inner panel is less than a length of the side panel in an extending direction of the end inner panel.

3. A material saving folding carton according to claim 1, characterized in that in the folded condition the front inner panel and the rear panel are connected by a two sided closure.

4. The material saving folded carton according to claim 3, wherein the locking structure comprises a first connection on the front inner panel and a second connection on the rear panel; in the folded state, the first connecting part and the second connecting part extend towards the direction close to each other, and the tail ends of the first connecting part and the second connecting part are mutually contacted and locked.

5. A material saving folded carton according to claim 3, wherein in the folded condition the side panels are located outside the closure and the end inner panels are folded relative to the side panels to a position inside the closure towards the interior of the carton.

6. The material saving folded carton according to claim 3, wherein there is a transition between the side panels and the end inner panels, the transition having a width matching the thickness of the closure; in the folded state, the side panels, the transition portion, and the end inner panel collectively enclose the locking structure.

7. The material saving folding carton of claim 4, wherein the first connecting portion has a first locking aperture thereon and the second connecting portion has a second locking aperture thereon; in the folded state, the mouth parts of the first locking opening and the second locking opening correspond up and down, and the corresponding parts of the first connecting part and the second connecting part are locked into the locking openings of the other side through the mouth parts.

8. The material saving folding carton of claim 7, wherein the locking seam further comprises a flared guide.

9. The material saving folded carton according to claim 8, wherein the locking structure comprises a main panel and a hook piece, the main panel is connected with the hook piece, the mouth is formed by a gap between the main panel and a top of the hook piece, and the locking opening is formed by extending the mouth obliquely outward.

10. The material saving folding carton according to claim 2, characterized in that the length of the end inner panels in the direction of extension of the end inner panels is 0.5-0.8 times the length of the side panels.

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