CN110182469B

CN110182469B - Bottom sealing structure of packing box

Info

Publication number: CN110182469B
Application number: CN201910508618.1A
Authority: CN
Inventors: 杜玉; 赵瑞城; 李�灿; 邓伟
Original assignee: Anhui Shipinjia Industrial Product Design Co ltd
Current assignee: Anhui Shipinjia Industrial Product Design Co ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-10-23
Anticipated expiration: 2039-06-13
Also published as: CN110182469A

Abstract

The invention relates to a back cover structure of a durian packing box, which comprises an inner box body, wherein the inner box body is formed by folding a rectangular paperboard, the rectangular paperboard is provided with first creases at equal intervals, the first creases are arranged along the width direction of the rectangular paperboard, one side of the rectangular paperboard is provided with a second notch, the second notch is in a strip shape and extends along the length direction of the rectangular paperboard, the second notch is arranged at the position of the first creases, a back cover paperboard is arranged between the adjacent second notches, the back cover paperboards are mutually buckled and form the box bottom of the inner box body, a paperboard hole opening device is arranged at one end of the rectangular paperboard at intervals, after the back cover paperboards are creased by a creasing machine, the bottom paper boards are buckled with each other to form the box bottom of the inner box body, thereby forming the support for the tray, this back cover structure can realize avoiding the durian fruit because weight is too big and the problem that the lower extreme of box body dropped in the follow to the further stable packing of durian fruit.

Description

Bottom sealing structure of packing box

Technical Field

The invention relates to the technical field of article packaging, in particular to a back cover structure of a durian packaging box.

Background

The durian essence is named as 'fruit king', is deeply favored by eaters due to rich nutritional value and soft and glutinous taste, is picked up as a tropical fruit and needs to be transported immediately, so that the problem of deterioration and rot of the well-done durian can be avoided, in order to improve the storage time of the durian, the picked durian fruit is generally an incompletely-ripe fruit, the durian fruit is full of spines on the surface and hard in texture, the transportation process of an actual harvester is very inconvenient, and the durian fruit is affected by overlong transportation time or temperature in the actual transportation process, so that the problem of individual ripening exists, after the durian fruit is ripe, the durian fruit peel can be fried from the top, after the durian peel is fried, the durian pulp is easily polluted and rotted, in the prior art, in order to avoid the problem that the top of the durian peel is fried to be too large, the mode of rubber band is binded in the outward appearance of durian fruit to the adoption, the too big problem of opening that leads to can effectively avoid durian peel apex department to the durian of above-mentioned binding rubber band to avoid droing of durian meat and rotten too fast problem, the mode of nevertheless adopting the rubber band to bind is inconvenient to operate, and the in-process of transportation moreover, extrude each other between the durian fruit, produce crowded rotten problem very easily, cause the sales end article of durian fruit relatively poor mutually.

Disclosure of Invention

The invention aims to provide a back cover structure of a durian packing box, which can effectively improve the back cover reliability of the durian fruit packing box bottom.

The technical scheme adopted by the invention is as follows.

The utility model provides a back cover structure of packing carton, includes interior box body, interior box body is converted into by the rectangle cardboard and is formed, equidistant first crease that is provided with on the rectangle cardboard, first crease arranges along rectangle cardboard width direction, the second breach has been seted up to one side of rectangle cardboard, the second breach is the strip and extends along the length direction who states the rectangle cardboard and arranges, the second breach is seted up in first crease position department, is provided with the back cover cardboard between the adjacent second breach, the mutual lock of back cover cardboard just constitutes the box bottom of interior box body.

The invention has the technical effects that: utilize cardboard trompil equipment to set up at the one end interval of rectangle cardboard, thereby can separate out single back cover cardboard, the back cover cardboard passes through behind the crease mark machine crease, the box bottom of box body in the mutual lock of back cover cardboard can constitute, and then form the bearing to the tray, then adopt to place the durian fruit in supporting the box body, taut strapping, can make the shrink of interior box body, thereby realize the shrink to supporting the box body, and then in order to ensure the tight operation of tying up of clamp to the durian fruit, then the handheld durian fruit handle intercommunication packing of packing staff is placed in the packing tube, in order to realize further stable packing to the durian fruit, avoid the problem that the durian fruit drops because weight is too big and from the lower extreme of interior box body.

Drawings

Figures 1 and 2 are schematic views from two perspectives of a package;

FIG. 3 is a schematic view of the package after removal of the lid;

FIG. 4 is a schematic view of a construction of a snap-fit paperboard;

FIGS. 5 and 6 are schematic views of two viewing angle structures of the inner case and the support case nested together;

FIG. 7 is a top view of the inner shell, support shell and airbag assembled together;

FIGS. 8 and 9 are schematic views of two perspective structures for supporting the cassette and tray;

FIG. 10 is a top view of the support tray and the cassette;

FIG. 11 is a schematic view of a portion of the structure in the support cassette;

FIG. 12 is a schematic plan view of the support cassette after deployment;

FIG. 13 is a schematic structural view of the inner shell;

FIGS. 14 and 15 are schematic plan views of the two embodiments of the inner shell after deployment;

fig. 16 is a schematic view showing a state where the rectangular cardboard of the inner case is folded.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the invention will now be described in detail with reference to the following examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed. As used herein, the terms "parallel" and "perpendicular" are not limited to their strict geometric definitions, but include tolerances for machining or human error, legibility and inconsistency; the specific features of the package are described in detail below:

the structure of the back cover of the packing box of the present invention will be described in detail below with reference to the whole packing box:

a packing box comprises an inner box body 10, wherein the radial size of a cavity enclosed by the inner box body 10 can be increased or reduced, a strapping tape 20 is further arranged outside the inner box body 10, the strapping tape 20 extends along the circumferential direction of the inner box body 10, a supporting box body 30 is further arranged in the cavity of the inner box body 10, the cavity enclosed by the supporting box body 30 is used for supporting durian fruits, a tray 40 is arranged at the bottom of the inner box body 10, and the inner box body 10 is arranged in a packing tube 50;

referring to fig. 1 to 13, when the durian fruit packing box is actually used for packing, firstly, the supporting box 30, the packing tube 50, the inner box 10 and the tray 40 are prepared, then the tray 40 is placed at the bottom of the inner box 10, the supporting box 30 is placed in the inner box 10, a packing worker holds the durian fruit by hand, the durian fruit is placed in the cavity of the supporting box 30, the end of the durian fruit is abutted against the tray 40, then the packing worker holds the strapping tape 20 by hand, tightens the strapping tape 20, reduces the radial dimension of the inner box 10, reduces the radial dimension of the supporting box 30, thereby realizing the strapping of the durian fruit, avoiding the problem that the fruit is too large in the opening of the fruit peel at the top end of the durian fruit due to the ripeness, and then places the packed durian fruit tray together with the 40, the inner box 10 and the supporting box 30 in the packing tube 50, thereby realizing the effective packaging machine support of the whole durian fruit;

the durian fruit is supported by the supporting box body 30, when the strapping tape 20 is tightened, the radial direction of the inner box body 10 is contracted, the interlocking supporting box body 30 is contracted, the inner wall of the supporting box body 30 is abutted against the peel and the peel of the durian fruit in the contraction process of the supporting box body 30, the durian fruit can be effectively clamped, the limitation on the durian fruit can be effectively realized, the problem that the durian fruit shakes in the actual transportation process is solved, the supporting box body 30 can clamp the peel of the durian fruit and can also realize the elastic clamping of the durian fruit, and the problem that the durian fruit is opened and fried due to excessive shaking in the transportation process is solved;

adopt this kind of packing carton packing durian fruit not only can improve the stability to durian fruit packing, still can ensure that the rotten problem can not appear in the durian fruit in the short time, when actual transportation, can also transport alone, stop the inconvenient problem of durian fruit transportation.

As a preferred scheme of the present invention, as shown in fig. 3 and 4, a clamping paperboard 60 is disposed at an opening of the inner box 10, an edge end surface of the clamping paperboard 60 abuts against an inner wall of a chamber of the inner box 10, and an opening 61 through which a durian fruit stem passes is disposed on the clamping paperboard 60;

in order to limit the fruit handle of the durian fruit, a clamping paper board 60 is arranged at an opening of a cavity enclosed by the inner box body 10, and the fruit handle of the durian fruit passes through an opening 61 in the center of the clamping paper board 60 so as to extend out of a box opening of the inner box body 10;

because the difference of durian fruit can keep flat the fruit on the mesa with apple or other tops, the durian fruit wholly presents in the middle big, the little state in both ends, and most durian fruit's appearance also is not foretell middle big, the little state in both ends, mostly be anomalous form, consequently hardly make durian fruit handle present natural state up, consequently support the one end of durian fruit on tray 40, the fruit handle one end of durian fruit adopts joint cardboard 60 to carry out the joint, thereby can effectively realize spacing to durian fruit both ends, it transports with the gesture of fruit handle up to make the durian fruit, avoid the random removal of durian fruit, in order to avoid the packing carton rock and make the durian fruit be located the packing carton and remove at will often.

Further, as shown in fig. 5, 7, 8, 9 and 10, the supporting box 30 includes a plurality of tightening boxes 31, the tightening boxes 31 are arranged at intervals along the circumferential direction of the chamber of the supporting box 30, the length direction of the tightening boxes 31 is parallel to the length direction of the supporting box 30, and the cross section of the tightening boxes 31 is triangular;

the tight box 31 is arranged in the chamber of the supporting box body 30 at equal intervals, after the durian fruit is placed in the tight box 31, the peel of the durian fruit is abutted against the outer wall of the tight box 31, the cross section of the tight box 31 is triangular, one straight edge of the tight box 31 forms the inner surface of the chamber of the supporting box body 31, so that the peel of the durian fruit is abutted against one side of the tight box 31, the tight box 31 in pair of triangles can form a tight cavity, the tight box 31 is more stable, when the strapping tape 20 is tightened, the inner box body 10 contracts radially, after the inner box body 10 contracts radially, the supporting box body 30 also contracts radially, so that the clamping operation on the peel of the durian fruit is realized, when the tight box 31 is abutted against the durian fruit, the tight box 31 deforms, and the problem of cavities caused by irregular appearance of the durian fruit can be solved, deformation that the tight box 31 in top produced can effectively improve the tight operation of clamp to the durian fruit, can avoid on the one hand because rock and be located the random removal in the packing carton and the problem of colliding with that appears, and the other party alright effectively improve the peel clamping degree to the durian fruit, avoids the durian fruit because the too big problem of opening after ripe.

Specifically, the inner box 10 is formed by folding a rectangular paperboard 11, first creases 111 are arranged on the rectangular paperboard 11 at equal intervals, the first creases 111 are arranged along the width direction of the rectangular paperboard 11, a through hole 112 is arranged at a position close to the first creases 111, one end of the strapping tape 20 sequentially passes through the through hole 112, and two ends of the strapping tape are located at the bonding positions of two ends of the rectangular paperboard 11;

referring to fig. 5 and 6, after the first fold 111 of the rectangular paper board 11 is folded by the creasing machine, the pressing mechanism on the creasing machine enables the rectangular paper board 11 to be repeatedly folded around the first fold 111, and enables the first fold 111 to be distributed on two sides of the rectangular paper board 11, then two ends of the rectangular paper board are folded together by the paper board jointing device, so as to form a cylindrical packing box without a bottom edge, then a perforation 112 is arranged at the first fold 111, one end of the strapping tape 20 is penetrated through the perforation 112, so as to distribute the strapping tape 20 on the rectangular paper board 11, and when the rectangular paper board 11 is needed to be used, the two ends of the rectangular paper board 11 are jointed together, so as to form a cylindrical inner box 10.

The first fold 111 is folded into a zigzag structure, and two ends of the rectangular paper board 11 are connected into a whole, so that when the foldable box is actually used, due to the carton surrounded by the zigzag structure, the paper boards on two sides of the position of the first fold 11 of the inner box body 10 can rotate relatively, the inner diameter of the inner box body 10 is increased in the radial direction, and the foldable box can be suitable for packaging durian fruits with different sizes;

the first fold 111 is a general term for the folds arranged in the width direction of the rectangular paper board 11, and actually, the first fold 111 includes a plurality of sub-folds to facilitate the bending of the rectangular paper board 11 and the perforation 112;

referring to fig. 13 to 15, in fact, the first fold 111 includes first, second and third dividing

folds

1111, 1112, 1113, the first dividing fold 1111 and the third dividing fold 1113 are located at two sides of the second dividing fold 1112, the first dividing fold 1111 and the second dividing fold 1112 form a first dividing flap 1114, the second dividing fold 1112 and the third dividing fold 1113 form a second dividing flap 1115, the first dividing flap 1114 and the second dividing flap 1115 are arranged at an included angle, the first, second and third dividing

folds

1111, 1112, 1113 are distributed at equal intervals along the length direction of the rectangular cardboard 11, the adjacent first, second and third dividing

folds

1111, 1112, 1115 3 form a box enclosure 1116, the width of the box enclosure 1116 should be 2 times that of the first dividing flap 1114 and the second dividing flap, so as to facilitate the folding operation of the rectangular cardboard 11 by using a creasing machine, when the creasing machine performs the operation of the rectangular fold 11, also can set up fourth crease 1117 in the width direction center of box bounding wall 1116, fourth crease 1117 does not require the crease to be stable, in order to conveniently form an effectual bending point, after crease machine implementation passed to rectangular cardboard 11 crease, adopt the cardboard folding machine, make rectangular cardboard 11 buckle around first crease 111 respectively, and make respective first crease 1111 and third crease 1113 mutually paste together, and make box bounding wall 1116 fold together around fourth crease 1117, it offers rectangular perforation 112 to lie in first crease 1111 and third crease 1113 department of mutually laminating conveniently to utilize tapping equipment, and utilize threading equipment to wear strap 20 to put in rectangular perforation 1112, thereby realize arranging strap 20.

Further, two groups of the binding tapes 20 are arranged along the length direction of the inner box body 10 at intervals; foretell two sets of strapping 20 can effectively improve the effect of tying up to the durian fruit, avoid the durian fruit to be located the too big problem of opening part fried open of peel.

As shown in fig. 15, two first notches 113 are formed in one end of the rectangular paperboard 11 at intervals, the first notches 113 are strip-shaped, the lengths of the two first notches 113 are the same as the length direction of the rectangular paperboard 11, a limiting folding strip 114 is arranged between the two first notches 113, a second folding line 115 is arranged between the limiting folding strip 114 and the top ends of the two first notches 113, and the other end of the rectangular paperboard 11 abuts against the limiting folding strip 114;

after the inner box body 10 is creased, two first notches 113 are formed in one end of the rectangular paperboard 11 through the opening device, the second crease 115 at the bending position of the bending device is utilized, and therefore the limiting folding strip 114 is formed, in the practical operation process, the other end of the rectangular paperboard 11 is abutted to the limiting folding strip 114, the limitation to the other end of the rectangular paperboard 11 is achieved, the gluing device is used for coating adhesive glue at one end of the rectangular paperboard 11, the other end of the rectangular paperboard 11 can be connected, the limiting folding strip 114 formed through the second crease 115 is utilized, the other end of the rectangular paperboard 11 can be accurately guided into the limiting folding strip 114, and the limiting folding strip 114 is abutted to the limiting folding strip 114, and the whole rectangular paperboard 11 is sealed.

As shown in fig. 14, as a preferred embodiment of the present invention, one end of the rectangular paper board 11 is provided with a jack 11a, the other end of the rectangular paper board 11 is provided with a paper inserting board 11b, the paper inserting board 11b is inserted into the jack 11a, the jack 11a is a rectangular hole, the length direction of the rectangular hole is parallel to the width direction of the rectangular paper board 11, the length of the paper inserting board 11b is slightly less than the length of the jack 11a, so that it is better to insert the paper inserting board 11b into the jack 11a, the paper inserting board 11b is rectangular, two ends of the paper inserting board 11b are provided with limiting snap-gauge boards 11c, the extending direction of the limiting snap-gauge boards 11c is consistent with the length direction of the rectangular paper board 11, after the insertion board 11b is inserted into the jack 11a, two limiting snap-gauge boards 11c are tilted by one end, so that the buckle formed by the tilting of the limiting snap-gauge boards 11c, thereby realize the connection to 11 both ends of rectangle cardboard, the opening can be seted up at the both ends of inserting cardboard 11b in foretell spacing cardboard 11 c's formation, thereby make the opening both sides and insert the spacing cardboard 11c that cardboard 11b both ends can form and be used for connecting, improve the reliability of connection simultaneously, when actual operation, packing staff only need will insert cardboard 11b by hand in the jack 11a, and make spacing cardboard 11c perk, thereby make spacing cardboard 11c laminate on the rectangle cardboard 11 at jack 11a place, thereby can realize the connection to 11 both ends of rectangle cardboard, convenient operation and packing carton cost of manufacture are lower.

As shown in fig. 14 and fig. 15, further, a second notch 116 is formed in one side of the rectangular paper board 11, the second notch 116 is in a strip shape and extends along the length direction of the rectangular paper board 11, the second notch 116 is formed in the position of the first fold 111, a bottom sealing paper board 117 is disposed between the adjacent second notches 116, and the bottom sealing paper boards 117 are fastened to each other to form the bottom of the inner box 10.

Utilize cardboard trompil equipment to set up at the one end interval of rectangle cardboard 11, ensure to make second breach 116 set up in first branch crease 1111 and third branch crease 1113 position department, thereby can separate out solitary back cover cardboard 117, back cover cardboard 117 passes through behind the crease mark machine crease, the box bottom of box body 10 in the mutual lock of back cover cardboard 117 can constitute, and then form the bearing to tray 40, then adopt to place the durian fruit in supporting box body 30, taut strapping 20, can make interior box body 10 shrink, thereby realize the shrink to supporting box body 30, and then in order to ensure the tight operation of tying up of clamp to the durian fruit, then the handheld durian fruit handle intercommunication packing of packing staff is placed in packing tube 50, in order to realize the further stable packing of durian fruit, avoid the problem that the durian fruit drops from the lower extreme of interior box body 10 because weight is too big.

In an embodiment, a third fold 118 is arranged on one side of the bottom covering paperboard 117 and one side of the rectangular paperboard 11, the length direction of the third fold 118 is perpendicular to the length direction of the rectangular paperboard 11, a buckle bar 119 is arranged at the board end of the bottom covering paperboard 117, the buckle bar 119 is arranged perpendicular to the bottom covering paperboard 117, a rectangular insertion hole 1171 is arranged on the bottom covering paperboard 117, plugs 1191 are arranged at two ends of the buckle bar 119, and the plugs 1191 are inserted into the rectangular insertion holes 1171;

in order to ensure the reliability of the bottom closure of the inner box 10, the third folding mark 118 enables the bottom paper board 117 to be bent inwards, the buckle bar 119 is arranged at the end part of the bottom paper board 117, the plugs 1191 are arranged at the two ends of the buckle bar 119, and during the bottom closing operation, the plugs 1191 are inserted into the rectangular insertion holes 1171 of the adjacent bottom paper boards 117, so that the connection of the adjacent bottom paper boards 1171 is realized, and the connection reliability of the bottom paper boards 1171 is ensured.

When the inner box body 10 is actually used, the inner diameter of the inner box body 10 can increase or decrease in the radial direction, the rectangular insertion holes 1171 are arranged in a splayed shape, and the width dimension of the rectangular insertion holes 1171 is larger than the thickness of the plugs 1191;

the width of foretell rectangle jack 1171 is greater than the thickness of plug 1191, when the internal diameter of interior box body 10 increases or reduces for plug 1191 is located rectangle jack 1171 and removes, thereby makes the deformation of the realization radial direction that interior box 10 can be smooth, with the packing needs of the durian fruit of adaptation not equidimension and different shapes.

Further, as shown in fig. 14 and fig. 15, the plug 1191 is a thin plate-shaped structure, clamping steps 1192 are disposed on two sides of the plug 1191, guiding slopes 1193 are disposed on two ends of the plug 1191, and when the plug 1191 is inserted into the rectangular insertion hole 1171, a table surface of the clamping step 1192 abuts against the bottom cover paperboard 117 where the rectangular insertion hole 1171 is located;

in order to realize the reliability of the plug 1191 and the rectangular jack 1171 in plugging and avoid the random leading-out of the plug 1191 from the rectangular jack 1171, the two sides of the plug 1191 are provided with clamping steps 1192, when the plug 1191 is inserted into the rectangular jack 1171, the table surface of the clamping steps 1192 is abutted against the bottom sealing paperboard 117 where the rectangular jack 1171 is located, so that the limit of the plug 1191 is realized, the plug 1191 is prevented from moving out of the rectangular jack 1171, the length of the plug 1191 is slightly larger than that of the rectangular jack 1171, and in the actual operation process, a packing worker inserts the plug 1191 into the rectangular jack 1171, so that the limit of the plug 1191 is realized, and the problem that the plug 1191 moves out of the rectangular jack 1171 at will be avoided.

In order to avoid the adjacent buckling strips 119 from being staggered with each other and avoid the interference between the adjacent buckling strips 119, an avoiding notch 1194 for avoiding the adjacent buckling strips 119 is formed in the buckling strip 119;

when the adjacent buckle strips 119 are buckled, one buckle strip 119 passes through the avoiding notch 1194 to avoid the other buckle strip 119, so that the effective bottom closing operation of the inner box body 10 is ensured.

Further, as shown in fig. 14 and fig. 15, in order to ensure the effect of the back cover, the back cover paper boards 117 are arranged at intervals of two first creases 111, a third notch 110 is formed in the rectangular paper board 11 between the adjacent back cover paper boards 117, the length direction of the third notch 110 is parallel to the length direction of the rectangular paper board 11, a fourth crease 1101 is formed at the extending end of the third notch 110, the length direction of the fourth crease 1101 is perpendicular, and the paper boards at the fourth crease 1101 are folded into a back cover baffle 12;

the forming of the bottom paper boards 117 depends on the formation of the third folding mark 118 and is arranged at a distance from the two first folding marks 111, so that a sufficient avoiding space can be formed between the bottom paper boards 117, the bottom paper boards 117 can be smoothly buckled together, and the sealing reliability of the bottom paper boards 117 is ensured;

the third notch 110 can form the back cover 12, and through the fourth fold 1101, the back cover 12 is extended and extended to the lower position of the back cover paper board 117, the bottom of the inner box 10 is flat due to the formed back cover 12, the inner box 10 is conveniently guided into the packaging tube 50, the back cover 12 abuts against the bottom of the packaging tube 50, the inner box 10 is sleeved, and the inner box 10 can be stably placed in the packaging tube 50.

As a preferable embodiment of the present invention, the supporting box 30 is formed by folding a supporting paper board 32, a plurality of fourth creases 321 are provided on the supporting paper board 32 at equal intervals, the fourth creases 321 are arranged along the width direction of the supporting paper board 32 and are parallel to each other, the folded coaming of the fourth creases 321 is matched with the coaming of the first creases 111 of the rectangular paper board 11, and the first creases 111 and the fourth creases 321 are arranged correspondingly;

the fourth fold 321 makes the folded contour of the supporting paper 32 match the contour of the inner box 10, so as to be able to change according to the change of the inner box 10, when the radial direction of the inner box 10 increases or decreases, the box-shaped structure formed by the fourth fold 321 of the supporting paper 32 is inserted into the inner box 10, so that the positions of the first fold 111 and the fourth fold 321 correspond, and the supporting box 30 can be ensured to be suitable for the change of the inner box 10.

Specifically, as shown in fig. 11, the outer wall of the tightening box 31 includes first, second, third, and fourth dividing

creases

311, 312, 313, and 314, which are enclosed, the third and fourth dividing

creases

313 and 314 form the top end of the tightening box 31, the middle section of the unit enclosing plate 33 divided by the fourth crease 321 is provided with fifth and sixth

dividing creases

331 and 332, a first bonding plate 333 is formed between the fifth dividing crease 331 and the third dividing crease 313, a second bonding plate 334 is formed between the sixth dividing crease 332 and the fourth dividing crease 314, and the first bonding plate 333 and the second bonding plate 334 are attached and bonded into a whole;

the tightening box 31 is formed by enclosing the first, second, third and fourth dividing

creases

311, 312, 313 and 314, so that the tightening box 31 forms a three-dimensional box-shaped structure with a triangular section, and one side surface of the tightening box 31 becomes a box surface for tightly pressing the skin of the durian fruit, thereby ensuring the clamping effect on the durian fruit and avoiding the problem that the opening is too large due to the mature durian fruit;

the unit enclosing plate 33 divided by the fourth fold 321 can be used for fixing the tightening box 31, the connecting position between the top end of the tightening box 31 and the enclosing plate 33 is provided with fifth and sixth dividing

folds

331, 332, a first bonding plate 333 is formed between the fifth dividing fold 331 and the third dividing fold 313, a second bonding plate 334 is formed between the sixth dividing fold 332 and the fourth dividing fold 314, so that the top end of the tightening box 31 is connected with the middle section of the unit enclosing plate 33, thereby forming a top end connecting part with the tightening box 31, the connecting part comprises a first bonding plate 333 and a second bonding plate 334, the first bonding plate 333 and the second bonding plate 334 are perpendicular to the plate surface of the unit enclosing plate 33, when the tightening box 31 is abutted against the outer wall of the durian fruit and tightly wraps the durian fruit, the tightening box 31 is stressed, so that the tightening box 31 is located at the joint position of the first bonding plate 333 and the second bonding plate 334 to generate a certain angle of deflection, thereby the problem of the 30 internal diameter changes of support box body that box body 10 shrink in-process produced including the adaptation, and then make a side box wall of the tight box 31 in top support with the outer wall of durian fruit all the time and lean on to ensure the tight packing effect in top to the durian fruit.

More preferably, as shown in fig. 7, in order to further improve the reliability of the packaging of the durian fruit and ensure the reliability of the supporting of the durian fruit and the reliability of the clamping of the fruit peel, an air bag 70 is arranged in the cavity of the tightening box 31;

when actual packing operation, the gas bag 70 that will have the cushioning effect is filled in the box body of the tight box 31 in top to the realization is to the further packing of the tight box 31 inner chamber in top, and the tight box 31 in top that the packing has gas bag 70 not only supports intensity height, avoids the tight box 31 in top that appears when the tight box 31 in top contacts with the durian fruit crust to warp too big problem moreover, thereby realizes the effective clamp of big team durian fruit tightly, and realizes the elastic support to the durian fruit.

In order to further improve the supporting reliability of the durian fruits, the tray surface of the tray 40 is provided with a grating plate 80;

foretell grid plate 80 chooses for use cardboard grid plate, places grid plate 80 on layer board 40 for the tip of durian fruit supports and leans on grid plate 80, can effectively realize spacing to the durian fruit, avoids the random removal of durian fruit, ensures the reliability that the tray 40 supported the durian fruit, avoids the random removal of durian fruit.

Further, the clamping paper plate 60 is integrally in a circular plate shape, a top plate 62 extends from the edge of the clamping paper plate 60 in the circumferential direction at equal intervals, the extending direction of the top plate 62 is consistent with the radial direction of the clamping paper plate 60, a guide sliding plate 621 is arranged at the extending end of the top plate 62, and the guide sliding plate 621 is in a folded plate shape and abuts against the plate surface at the folding position of the first fold 111 of the rectangular paper plate 11;

after the durian fruit is well packaged through interior box body 10, place interior box body 10 and support box body 30 in a packing section of thick bamboo 50, thereby realize the packing to the durian fruit, the vertical upwards of durian fruit stalk of packing, establish joint cardboard 60 cover on the durian fruit, make the fruit handle of durian fruit pass opening 61, the opening inner wall department of box body 10 including making roof 62 decide, and direction slide 621 supports with interior box body 10 inner wall elasticity and leans on, thereby make the fruit handle of durian fruit be in vertical just state of leading, and utilize joint cardboard 60 cover to establish on the fruit handle, can avoid touching after the durian fruit and the problem of pricking appears.

In order to facilitate the durian fruit stem to pass through the opening 61, a circular notch is formed in the center of the clamping paper plate 60, elastic claws 63 extend from the edge of the circular notch at equal intervals in the circumferential direction, the extending direction of the elastic claws 63 extends towards the radial direction of the circular notch, and the opening 61 is formed in the center of the circular notch;

elastic claw 63 equidistance interval sets up, and the fruit stalk passes the back through opening 61, and elastic claw 63 is crooked to can effectively realize dodging to the fruit stalk, avoid because the muscle ball on fruit stalk surface leads to the problem of damaging opening 61 peripheral cardboard.

In order to further improve the effect of tightening the durian fruits, a hook 51 is arranged at the opening of the packaging barrel 50, the strapping tape 20 is an elastic tape, and lifting rings are arranged at two ends of the strapping tape and are hung on the hook 51;

couple 51 that foretell packing carton 50's nozzle inner wall set up, couple 51 is the metal hook, utilize interior box body 10 and support box body 30 with the good back of durian fruit packing, then with the leading-in packing carton 50 of whole packing in, then make the rings at strapping 20 both ends hang and establish on couple 51, thereby realize the restraint to strapping 20, in order to realize the operation of tightening up to strapping 20, under the effect of durian fruit dead weight, ensure that strapping 20 is in the state of flare-outing all the time, thereby realize the operation of tighten up to durian fruit.

More specifically, in order to ensure the air permeability inside the packaging tube 50 and avoid the problem of too fast ripening of the durian fruit due to sealing, a first air vent 52 is formed at the bottom of the packaging tube 50, an extension tube 53 is arranged at the edge of the bottom of the packaging tube 50, a notch 531 is formed at the edge of the extension tube 53, a tube cover 54 is arranged at the tube opening of the packaging tube 50, a second air vent 541 is formed in the tube cover 54, a handle 542 is arranged on the tube cover 54, and a third air vent 55 is formed in the circumferential direction of the tube wall of the packaging tube 50;

the edge of the extension pipe 53 is provided with the notch 531, the circumferential direction of the wall of the packaging barrel 50 is provided with the third vent hole 55, and the barrel cover 54 is provided with the second vent hole 541, so that ventilation of the packaging barrel 50 can be effectively realized, and the mature time of the durian fruits is prolonged.

The durian packaging method is explained below with reference to the entire package:

the food packaging method comprises the following steps:

A. harvesting semi-mature durian fruits, and selecting the durian fruits with uniform fruit shapes and no scars as much as possible;

B. connecting two ends of the rectangular paperboard 11 after the operation of folding and opening together to form a complete cylindrical inner box body 10, and sealing the lower end of the inner box body 10;

C. connecting both ends of the support sheet 32 after the folding operation together to form a cylindrical support case 30, inserting the support case 30 into the inner case 10 such that the folds of the support case 30 correspond to the folds of the inner case 10;

D. placing the tray 40 at the bottom of the support box 30, and holding the stem of the durian fruit by hand, so that the end of the durian fruit is abutted against the tray 40;

E. tightening the strapping tape 20 so that the inner case 10 is contracted to perform a clamping operation of the lower end of the durian fruit;

F. the upper end cover of the inner box body 10 is provided with a clamping paper plate 60, so that the durian fruit stem passes through an opening 61 of the clamping paper plate 60;

G. and (3) placing the packaged durian fruits in the packaging barrel 50, and covering the barrel cover 54 to finish the packaging of the durian fruits.

In said step D, before the tray 40 is placed at the bottom of the support box 30, the grid plate 80 is placed on the tray 40.

In the step G, after the durian fruit is placed in the packaging tube 50, both ends of the strapping tape 20 are hung on the hook 51 at the mouth of the packaging tube 50, and then the lid 54 is covered at the mouth of the packaging tube 50.

The rectangular paper boards 11 forming the inner box body 10 are processed on a production line, the two ends of the rectangular paper boards 11 are connected into a whole at the upstream of the production line, the bottom sealing operation is carried out on the cylinder bottom of the cylindrical packaging box enclosed by the rectangular paper boards 11 at the midstream of the production line, and the formed inner box body 10 is taken out from the downstream of the production line;

the supporting paper plates 32 constituting the supporting box body 30 are processed on the production line, the supporting paper plates 32 are folded at the upstream of the production line, the positions of the folds are bonded at the midstream of the production line to form a jacking box 31, the two ends of the supporting paper plates 32 are connected into a whole, and the formed supporting box body 30 is taken out at the downstream of the production line and is placed in the inner box body 10.

The durian fruit is located and carries on the conveyer belt, interior box body 10 and support box body 30 are located the exit position arrangement of durian fruit respectively.

The jacking box 31 is arranged along the circumferential direction of the chamber of the supporting box body 30 at intervals, the length direction of the jacking box 31 is parallel to the length direction of the supporting box body 30, and the cross section of the jacking box 31 is triangular.

The inner box body 10 is formed by folding a rectangular paperboard 11, first creases 111 are arranged on the rectangular paperboard 11 at equal intervals, the first creases 111 are arranged along the width direction of the rectangular paperboard 11 and are close to the first creases 111, a through hole 112 is formed in the position, and one end of a strapping tape 20 sequentially penetrates through the through hole 112 and the bonding positions of the two ends of the rectangular paperboard 11.

Two sets of the binding tapes 20 are provided at intervals along the longitudinal direction of the inner box 10.

After the internal box body 10 and the supporting box body 30 are packaged, the air bag bags 70 are respectively placed in the tight jacking box 31, so that the supporting reliability of the durian fruit can be further improved.

Claims

1. The utility model provides a back cover structure of packing carton which characterized in that: the inner box body (10) is formed by folding a rectangular paperboard (11), first creases (111) are arranged on the rectangular paperboard (11) at equal intervals, the first creases (111) are arranged along the width direction of the rectangular paperboard (11), a second notch (116) is formed in one side of the rectangular paperboard (11), the second notch (116) is strip-shaped and extends along the length direction of the rectangular paperboard (11), the second notch (116) is formed in the position of the first creases (111), a bottom sealing paperboard (117) is arranged between every two adjacent notches (116), and the bottom sealing paperboards (117) are mutually buckled to form the box bottom of the inner box body (10);

one sides of the bottom sealing paperboard (117) and the rectangular paperboard (11) are provided with third creases (118), and the length direction of the third creases (118) is vertical to the length direction of the rectangular paperboard (11);

a buckle strip (119) is arranged at the board end of the bottom sealing paperboard (117), the buckle strip (119) is perpendicular to the bottom sealing paperboard (117), a rectangular jack (1171) is arranged on the bottom sealing paperboard (117), plugs (1191) are arranged at two ends of the buckle strip (119), and the plugs (1191) are inserted into the rectangular jack (1171);

the plug (1191) is of a thin plate-shaped structure, clamping steps (1192) are arranged on two sides of the plug (1191), guiding inclined planes (1193) are arranged at two ends of the plug (1191), and when the plug (1191) is inserted into the rectangular jack (1171), the table surface of each clamping step (1192) is abutted against the bottom sealing paperboard (117) where the rectangular jack (1171) is located;

an avoidance notch (1194) for avoiding the adjacent buckle strip (119) is formed in the buckle strip (119);

the back cover paper boards (117) are arranged at intervals of two first creases (111), a third notch (110) is formed in the rectangular paper board (11) between the adjacent back cover paper boards (117), and the length direction of the third notch (110) is parallel to the length direction of the rectangular paper board (11);

the extending end of the third notch (110) is provided with a fourth crease (1101), the length direction of the fourth crease (1101) is vertical, and the paperboard at the fourth crease (1101) is folded into a bottom closing baffle (12).

2. A back cover structure of a packing box according to claim 1, wherein: the rectangular jacks (1171) are arranged in a splayed manner.

3. A back cover structure of a packing box according to claim 1, wherein: the width dimension of the rectangular jack (1171) is greater than the thickness of the plug (1191).

4. Packing carton, its characterized in that: the package comprising a back cover structure of the package according to any one of claims 1 to 3.