CN114751051A

CN114751051A - Paper packing box with double-layer buffering function

Info

Publication number: CN114751051A
Application number: CN202210522091.XA
Authority: CN
Inventors: 王靖怡
Original assignee: Jiangxi New Gorgeous Printing Packaging Co ltd
Current assignee: Guangzhou Heyue Environmental Packaging Co ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-07-15
Anticipated expiration: 2042-05-13
Also published as: CN114751051B

Abstract

The invention relates to a packaging box, in particular to a paper packaging box with a double-layer buffering function. The technical problem of the invention is as follows: the paper packing box with the double-layer buffering function can protect the left side and the right side of an article and further prevent the article from being worn in the transportation process. A paper packing box with double-layer buffering function comprises a packing box body, a first buffer plate and the like, wherein the first buffer plate is connected between the inner walls of the front side and the rear side of the lower portion of the packing box body in a sliding mode. According to the invention, articles are placed in the packing box, the first buffer plate and the second buffer plate can buffer the articles, the foam plates can protect the left side and the right side of the articles, and meanwhile, the articles and the packing box can be covered and protected.

Description

Paper packing box with double-layer buffering function

Technical Field

The invention relates to a packaging box, in particular to a paper packaging box with a double-layer buffering function.

Background

The paper packing box is made of paper products and can be used for packing various articles, and the paper packing box has the characteristics of easily obtained materials, light weight, low cost and the like, so the paper packing box is widely used for selling and transporting and packing commodities.

Application publication No. CN210311339U discloses a paper packing box, which comprises a box body, wherein an outer box cover, an inner box cover and a box bottom surface are connected to the box body, a containing space is enclosed by the box body, the outer box cover, the inner box cover and the box bottom surface, a reinforcing supporting part is arranged in the containing space and comprises an upper supporting part and a side supporting part, the upper supporting part is connected with the upper edge of the side surface of the box body, and the upper surface of the upper supporting part is arranged in parallel with the box bottom surface and used for reinforcing the strength of the upper side of the paper packing box; the top of collateral branch supporting part with go up the perpendicular setting of supporting part, during the use, make up the packing box, then can be used for packing article, this packing box increases compressive strength, however this packing box can not protect the article left and right sides, and then can not prevent that article from taking place wearing and tearing in the transportation.

Therefore, a paper packaging box with double-layer buffering function is developed at present, wherein the paper packaging box can protect the left side and the right side of an article and further can prevent the article from being worn in the transportation process.

Disclosure of Invention

In order to overcome the defects that the left side and the right side of an article cannot be protected and further the article cannot be prevented from being worn in the transportation process, the invention has the technical problems that: the paper packing box with the double-layer buffering function can protect the left side and the right side of an article and further can prevent the article from being worn in the transportation process.

The utility model provides a paper packing box with double-deck buffer function, including packing box, first buffer board and first spring, slidingtype is connected with first buffer board between the inner wall of both sides around the packing box lower part, all is connected with first spring, characterized by between four angular positions of first buffer board downside and four angular positions of bottom wall in the packing box: the packaging box is characterized by further comprising a buffer mechanism and a closing mechanism, wherein the buffer mechanism is connected to the inner wall of the packaging box, and the closing mechanism is connected to the upper side of the packaging box.

In addition, it is especially preferred that the buffer gear includes cystosepiment, second buffer board and second spring, and both sides inner wall all is provided with the cystosepiment around the packing box, and the packing box left and right sides inner wall is connected with four second springs respectively, is connected with the second buffer board between the second spring right side of left part, also is connected with the second buffer board between the second spring left side of right part, and the second buffer board is connected with first buffer board slidingly.

In addition, it is especially preferred that the closing mechanism is including apron, first commentaries on classics cover, first pivot and torsional spring, and both sides all are connected with first commentaries on classics cover around packing box upper portion, and equal rotary type is connected with first pivot on the first commentaries on classics cover, all is provided with the apron in the first pivot, all is connected with the torsional spring between the both sides around apron and the first commentaries on classics cover.

In addition, especially preferred is, still including damper, damper is including third buffer board, movable block, third spring and first slide rail, and four angular positions in the packing box bottom outside all are provided with the movable block, all are connected with first slide rail on the movable block slidingly, are connected with the third buffer board between four first slide rail downside, all are connected with the third spring between movable block downside and the third buffer board upside, and the third spring is all around rolling up on first slide rail surface.

In addition, particularly preferably, the device also comprises a supporting mechanism, the supporting mechanism comprises a second slide rail, a first slide bar, a second slide bar and a fourth spring, card material portion, first sliding sleeve, movable rod and fifth spring, third buffer board upside is connected with the second slide rail, packing box downside slidingtype is connected with four first slide bars, the equal slidingtype in second slide rail left and right sides is connected with the second slide bar, second slide bar inboard all is connected with first sliding sleeve, all be connected with the fourth spring between first sliding sleeve outside and the second slide rail left and right sides inner wall, the fourth spring all is on the second slide bar surface around rolling up, the equal slidingtype in both sides is connected with two card material portions around the second slide rail middle part, the equal rotary type of first sliding sleeve upside is connected with the movable rod, the movable rod is connected with packing box downside rotary type, all be connected with the fifth spring between the inboard and the second slide rail front and back both sides inner wall of card material portion.

In addition, especially preferred is, still including packagine machine structure, packagine machine constructs including third slide rail, second pivot, lead screw, blade and second commentaries on classics cover, and packing box upper portion front side is connected with the third slide rail, and packing box upper portion front side is installed two second and is changeed the cover, and the third slide rail is located the second and changes the cover upside, and two second are changeed the cover inboard between the rotary type and be connected with the second pivot, and the rotary type is connected with the lead screw on the third slide rail, and the threaded connection has the blade on the lead screw.

In addition, especially preferred is, still including portable mechanism, portable mechanism is including portable portion, fixed part, fourth slide rail, sixth spring and second sliding sleeve, and packing box left and right sides upper portion all is connected with two fixed parts, all installs the fourth slide rail in the fixed part, and equal sliding connection has the second sliding sleeve on the fourth slide rail, and equal rotary type is connected with portable portion between two adjacent sliding sleeve outsides, all is connected with the sixth spring between second sliding sleeve downside and the fixed part downside inner wall.

In addition, the screw rod is particularly preferably provided with a handle, and the left side of the screw rod is connected with the handle.

Compared with the prior art, the invention has the following advantages: 1. according to the invention, by placing the articles into the packaging box, the first buffer plate and the second buffer plate can buffer the articles, the foam plate can protect the left side and the right side of the articles, and meanwhile, the foam plate can cover and protect the articles and the packaging box.

2. According to the invention, articles are put into the packing box, and the third buffer plate and the third spring can have a damping effect on the packing box; through putting into article in the packing box, and then make the movable rod to the downside rotate, so can play the supporting role to the packing box.

3. According to the invention, the adhesive tape is utilized, so that people can conveniently seal the packaging box, and after the packaging box is sealed, the blade can cut off the adhesive tape, so that people can conveniently take out articles; by lifting the hand-held part, people can lift the packing box better.

Drawings

Fig. 1 is a schematic perspective view of a first perspective structure according to the present invention.

Fig. 2 is a schematic perspective cross-sectional view of a second perspective view according to the present invention.

Fig. 3 is a schematic perspective view of a buffering mechanism according to the present invention.

Fig. 4 is a schematic perspective view of the closing mechanism of the present invention.

Fig. 5 is a schematic perspective view of the damper mechanism of the present invention.

Fig. 6 is a perspective view of a first part of the support mechanism of the present invention.

Fig. 7 is a perspective view of a second part of the supporting mechanism of the present invention.

Fig. 8 is a perspective view of a third part of the supporting mechanism of the present invention.

Fig. 9 is a perspective view of the packaging mechanism of the present invention.

Fig. 10 is a perspective view of the handheld unit of the present invention.

Wherein the figures include the following reference numerals: 1. the packaging box comprises a packaging box, 2, a first buffer plate, 3, a first spring, 4, a buffer mechanism, 41, a foam plate, 42, a second buffer plate, 43, a second spring, 5, a closing mechanism, 51, a cover plate, 52, a first rotary sleeve, 53, a first rotating shaft, 54, a torsion spring, 6, a damping mechanism, 61, a third buffer plate, 62, a movable block, 63, a third spring, 64, a first sliding rail, 7, a supporting mechanism, 71, a second sliding rail, 72, a first sliding rail, 73, a second sliding rail, 74, a fourth spring, 75, a clamping part, 76, a sliding sleeve, 77, a movable rod, 78, a fifth spring, 8, a packaging mechanism, 81, a third sliding rail, 82, a second rotating shaft, 83, a screw rod, 84, a blade, 85, a second rotary sleeve, 9, a hand-carrying mechanism, 91, a hand-carrying part, 92, a fixing part, 93, a fourth sliding rail, 94, a sixth spring, 10 and a handle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example 1

The utility model provides a paper packing box with double-deck buffer function, as shown in fig. 1-4, including packing box 1, first buffer board 2, first spring 3, buffer gear 4 and closing mechanism 5, sliding connection has first buffer board 2 between the inner wall of both sides around packing box 1 lower part, first buffer board 2 can play the cushioning effect to article, all install first spring 3 between four angular positions of first buffer board 2 downside and the four angular positions of inner wall in packing box 1, first spring 3 can play the buffering reset action to

first buffer board

2, 1 inner wall of packing box is connected with buffer gear 4, buffer gear 4 can play the cushioning effect to article, 1 upside of packing box is connected with closing mechanism 5, closing mechanism 5 can play the cover guard action to packing box 1.

As shown in fig. 2 and fig. 3, the buffering mechanism 4 includes a foam board 41, a second buffer board 42 and a second spring 43, the inner walls of the front and rear sides of the packing box 1 are connected with the foam board 41, the foam board 41 can protect articles and prevent the articles from being worn, the inner walls of the left and right sides of the packing box 1 are connected with four second springs 43 respectively, the second buffer board 42 is connected between the right sides of the two left second springs 43, the second buffer board 42 is also connected between the left sides of the two right second springs 43, the second buffer board 42 can buffer the left and right sides of the articles, the second springs 43 can make the second buffer board 42 play a role of buffering and resetting, and the second buffer board 42 is connected with the first buffer board 2 in a sliding manner.

As shown in fig. 1 and fig. 4, the closing mechanism 5 includes a cover plate 51, a first rotating sleeve 52, a first rotating shaft 53 and a torsion spring 54, the front and rear sides of the upper portion of the packing box 1 are connected with the first rotating sleeve 52, the first rotating sleeve 52 is connected with the first rotating shaft 53 in a rotating manner, the first rotating shaft 53 is connected with the cover plate 51, the cover plate 51 can cover the packing box 1, the torsion spring 54 is connected between the front and rear sides of the cover plate 51 and the first rotating sleeve 52, and the torsion spring 54 can enable the cover plate 51 to rotate and reset.

When people need to pack articles by using the packing box 1, firstly, people rotate upwards to open the cover plate 51, the cover plate 51 rotates upwards to drive the first rotating shaft 53 to rotate, at the moment, the torsion spring 54 is twisted, then people put the articles to be packed into the packing box 1, in the process of putting the articles, the front side and the rear side of the articles can extrude the second buffer plate 42 outwards, at the moment, the second spring 43 is compressed, the second buffer plate 42 can buffer the front side and the rear side of the articles, then the foam plate 41 can protect the left side and the right side of the articles, further, the left side and the right side of the articles can be prevented from being worn, at the same time, the first buffer plate 2 can be pressed downwards in the process of putting the articles, the first buffer plate 2 can buffer the articles, at the moment, the first spring 3 is compressed, after the articles are placed, people release the cover plate 51, then the cover plate 51 rotates downwards and is closed under the action of the torsion spring 54, the cover plate 51 can cover and protect the packing case 1, and can protect the articles, then one can transport the packaged article, and when one needs to take out the article, first, one turns the opening cover 51 upward, so that the torsion spring 54 is twisted, and then one takes out the article, then, when the article is separated from the first buffer plate 2, the first buffer plate 2 is moved to the upper side by the first spring 3 to be restored, then, when the article is separated from the second buffer plate 42, the second buffer plate 42 is moved inward to be restored by the second spring 43, and when the article is taken out, one releases the cover plate 51, the lid 51 is then pivoted downwardly closed by the torsion spring 54, and the article can be packaged by repeating the above operations, simultaneously can play the cushioning effect to article, and then can lose article and protect, prevent that article from taking place wearing and tearing when packing the transportation.

Example 2

On the basis of embodiment 1, as shown in fig. 1 and 5, still including the damper 6 that can carry out the absorbing to packing box 1, damper 6 is including third buffer board 61, the movable block 62, third spring 63 and first slide rail 64, the equal fixedly connected with movable block 62 in four angular positions in packing box 1 bottom outside, equal sliding connection has first slide rail 64 on the movable block 62, first slide rail 64 can play the guide effect to movable block 62, be connected with third buffer board 61 between four first slide rail 64 undersides, third buffer board 61 can play the cushioning effect to packing box 1, all be connected with third spring 63 between movable block 62 downside and the third buffer board 61 upside, third spring 63 all winds on first slide rail 64 surface, third spring 63 can play the buffering reset action to movable block 62.

When people pack article, at first, people put into packing box 1 with article, then packing box 1 moves to the downside under article gravity, packing box 1 moves to the downside and drives movable block 62 to move to the downside, first slide rail 64 can play the guide effect to movable block 62, third spring 63 is compressed this moment, so can play the shock attenuation effect to packing box 1, after people use and accomplish, people take out article, then movable block 62 moves to the upside under the effect of third spring 63 and resets, movable block 62 moves to the upside and drives packing box 1 and moves to the upside and resets, operation more than the repetition can realize playing the shock attenuation effect to packing box 1.

As shown in fig. 2, fig. 6, fig. 7 and fig. 8, the present invention further comprises a supporting mechanism 7 capable of supporting the packing box 1, the supporting mechanism 7 comprises a second slide rail 71, a first slide bar 72, a second slide bar 73, a fourth spring 74, a material blocking portion 75, a first sliding sleeve 76, a movable bar 77 and a fifth spring 78, the upper side of the third buffer plate 61 is connected with the second slide rail 71, the lower side of the packing box 1 is slidably connected with the four first slide bars 72, the left and right sides of the second slide rail 71 are slidably connected with the second slide bar 73, the second slide rail 71 can guide the second slide bar 73, the inner side of the second slide bar 73 is connected with the first sliding sleeve 76, the fourth spring 74 is connected between the outer side of the first sliding sleeve 76 and the inner walls of the left and right sides of the second slide rail 71, the fourth spring 74 is wound around the surface of the second slide bar 73, the fourth spring 74 can move and return the sliding sleeve 76, the front and rear sides of the middle portion of the second slide rail 71 are slidably connected with the two material blocking portions 75, card material portion 75 can carry out the screens to sliding sleeve 76, and the equal rotary type of first sliding sleeve 76 upside is connected with movable rod 77, and movable rod 77 is connected with packing box 1 downside rotary type, all is connected with fifth spring 78 between card material portion 75 inboard and the second slide rail 71 front and back both sides inner wall, and fifth spring 78 can make card material portion 75 remove and reset.

When people need to pack the articles by using the packing box 1, initially, the fourth spring 74 is in a stretched state, the first sliding sleeve 76 is in an innermost position, and the material clamping portion 75 is in a state of clamping the first sliding sleeve 76, firstly, people put the articles into the packing box 1, then the first buffer plate 2 moves downwards under the action of the gravity of the articles, at the moment, the first spring 3 is compressed, the first buffer plate 2 moves downwards to press the first sliding rod 72 downwards, when the first sliding rod 72 is in contact with the material clamping portion 75, the first sliding rod 72 pushes the material clamping portion 75 outwards, at the moment, the fifth spring 78 is compressed, when the material clamping portion 75 is separated from the first sliding sleeve 76, the first sliding sleeve 76 moves outwards under the action of the fourth spring 74, the first sliding sleeve 76 moves outwards to drive the second sliding rod 73 to move outwards, and the second sliding rod 71 can guide the second sliding rod 73, when the first sliding sleeve 76 moves outwards to enable the movable rod 77 to rotate downwards, the movable rod 77 rotates downwards to enable the packaging box 1 to move downwards, at the moment, the third spring 63 is compressed, so that the packaging box 1 can be supported, then when people need to take out articles, firstly, people take out the articles, then, the first buffer plate 2 moves upwards and resets under the action of the first spring 3, then, the packaging box 1 moves upwards and resets under the action of the third spring 63, the packaging box 1 moves upwards to drive the first sliding rod 72 to move upwards and reset, meanwhile, the packaging box 1 moves upwards to drive the movable rod 77 to move upwards and reset, the movable rod 77 rotates upwards to drive the first sliding sleeve 76 to move inwards, the first sliding sleeve 76 moves inwards to drive the second sliding rod 73 to move inwards, at the moment, the fourth spring 74 is stretched, and when the first sliding rod 72 is separated from the material clamping portion 75, the material blocking portion 75 is moved to the inner side under the action of the fifth spring 78 to reset, the material blocking portion 75 can block the first sliding sleeve 76, and the packaging box 1 can be supported by repeating the above operations.

As shown in fig. 2 and 9, the packaging machine further comprises a packaging mechanism 8 which can facilitate people to seal the packaging box 1 by using an adhesive tape, the packaging mechanism 8 comprises a third slide rail 81, a second rotating shaft 82, a lead screw 83, a blade 84 and a second rotating sleeve 85, the front side of the upper part of the packaging box 1 is connected with the third slide rail 81, the front side of the upper part of the packaging box 1 is connected with two second rotating sleeves 85, the second rotating shaft 82 is rotatably connected between the inner sides of the two second rotating sleeves 85, the third slide rail 81 is rotatably connected with the lead screw 83, the left side of the lead screw 83 is connected with a handle 10, the handle 10 facilitates people to rotate the lead screw 83, the blade 84 is threadedly connected on the lead screw 83, the blade 84 can cut off the packaging adhesive tape on the packaging box 1, and the third slide rail 81 can guide the blade 84.

When people need to pack the packing case 1 with the adhesive tape, firstly, people put the adhesive tape on the second rotating shaft 82, then people pull the adhesive tape to the back side to stick and fix the cover plate 51, so as to prevent the articles from falling out during the transportation, then when people need to take out the article, firstly, people rotate the handle 10 to enable the screw rod 83 to rotate, the screw rod 83 rotates to drive the blade 84 to move towards the right side, the blade 84 can then sever the tape, after which one can tear the tape, and one can then remove the item, then, people rotate the handle 10 reversely, so that the screw rod 83 rotates reversely, the blade 84 moves to the left to reset, the third slide rail 81 can play a role in guiding the blade 84, and the operation can be repeated to facilitate people to seal the packing box 1 by using the adhesive tape and facilitate people to cut the adhesive tape to take out articles.

As shown in fig. 1 and 10, the portable device 9 is further included, which is capable of facilitating people to lift the packing box 1, the portable device 9 includes a portable portion 91, a fixing portion 92, a fourth slide rail 93, a sixth spring 94 and a second slide sleeve 76, the left and right sides of the upper portion of the packing box 1 are both connected with the two fixing portions 92, the fixing portion 92 is internally connected with the fourth slide rail 93, the fourth slide rail 93 is connected with the second slide sleeve 76 in a sliding manner, the fourth slide rail 93 can guide the second slide sleeve 76, the portable portion 91 is connected between the outer sides of the two adjacent slide sleeves 76 in a rotating manner, the portable portion 91 is capable of facilitating people to lift the packing box 1, the sixth spring 94 is connected between the lower side of the second slide sleeve 76 and the inner wall of the lower side of the fixing portion 92, and the sixth spring 94 can enable the second slide sleeve 76 to move and reset.

When people need to carry this packing box 1, at first, people rotate portable portion 91 to the outside, portable portion 91 can be convenient for people to mention this packing box 1, then people can remove portable portion 91 to the downside, be convenient for people better messenger's power, portable portion 91 removes to the downside and drives second sliding sleeve 76 and removes to the downside, fourth slide rail 93 can play the guide effect to second sliding sleeve 76, sixth spring 94 is compressed this moment, so can be convenient for people carry this packing box 1 portable, when people need not be portable, at first release portable portion 91, then second sliding sleeve 76 moves to the upside under the effect of sixth spring 94 and resets, second sliding sleeve 76 moves to the upside and drives portable portion 91 and upwards moves, then people inboard rotate portable portion 91 and reset can, the operation can be convenient for people to mention this packing box 1 more than the repetition.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a paper packing box with double-deck buffer function is including packing box (1), first buffer board (2) and first spring (3), and slidingly be connected with first buffer board (2) between the inner wall of both sides around packing box (1) lower part, all is connected with first spring (3), characterized by between four angular position of corner position and packing box (1) inner wall under first buffer board (2) downside: the packaging box is characterized by further comprising a buffer mechanism (4) and a closing mechanism (5), wherein the buffer mechanism (4) is connected to the inner wall of the packaging box (1), and the closing mechanism (5) is connected to the upper side of the packaging box (1).

2. The paper packing box with double-layer buffering function as claimed in claim 1, wherein: buffer gear (4) are including cystosepiment (41), second buffer board (42) and second spring (43), both sides inner wall all is provided with cystosepiment (41) around packing box (1), packing box (1) left and right sides inner wall is connected with four second springs (43) respectively, be connected with second buffer board (42) between second spring (43) the right side of left part, also be connected with second buffer board (42) between second spring (43) the left side of right part, second buffer board (42) and first buffer board (2) sliding connection.

3. The paper packing box with double-layer buffering function as claimed in claim 2, wherein: the closing mechanism (5) comprises a cover plate (51), a first rotating sleeve (52), a first rotating shaft (53) and a torsion spring (54), wherein the front side and the rear side of the upper part of the packing box (1) are respectively connected with the first rotating sleeve (52), the first rotating sleeve (52) is connected with the first rotating shaft (53) in an equal rotating manner, the cover plate (51) is arranged on the first rotating shaft (53), and the torsion spring (54) is respectively connected between the cover plate (51) and the front side and the rear side of the first rotating sleeve (52).

4. The paper packing box with double-layer buffering function as claimed in claim 3, wherein: still including damper (6), damper (6) are including third buffer board (61), movable block (62), third spring (63) and first slide rail (64), four angular positions in packing box (1) bottom outside all are provided with movable block (62), all sliding connection has first slide rail (64) on movable block (62), be connected with third buffer board (61) between four first slide rail (64) downside, all be connected with third spring (63) between movable block (62) downside and third buffer board (61) upside, third spring (63) all wind on first slide rail (64) surface.

5. The paper packing box with double-layer buffering function as claimed in claim 4, wherein: the packaging box further comprises a supporting mechanism (7), the supporting mechanism (7) comprises a second sliding rail (71), a first sliding rod (72), a second sliding rod (73), a fourth spring (74), material clamping portions (75), a first sliding sleeve (76), a movable rod (77) and a fifth spring (78), the second sliding rail (71) is connected to the upper side of the third buffer plate (61), four first sliding rods (72) are connected to the lower side of the packaging box (1) in a sliding mode, the second sliding rod (73) is connected to the left side and the right side of the second sliding rail (71) in a sliding mode, the first sliding sleeve (76) is connected to the inner side of the second sliding rod (73) in an inner side mode, fourth springs (74) are connected between the outer side of the first sliding sleeve (76) and the inner walls of the left side and the right side of the second sliding rail (71) in a sliding mode, the fourth springs (74) are wound on the surface of the second sliding rod (73), two material clamping portions (75) are connected to the front side and the rear side of the middle of the second sliding rail (71) in a sliding mode, the upper side of the first sliding sleeve (76) is rotatably connected with a movable rod (77), the movable rod (77) is rotatably connected with the lower side of the packing box (1), and fifth springs (78) are respectively connected between the inner side of the material clamping part (75) and the inner walls of the front side and the rear side of the second sliding rail (71).

6. The paper packing case with double-layer buffering function as claimed in claim 5, wherein: still including packagine machine structure (8), packagine machine constructs (8) including third slide rail (81), second pivot (82), lead screw (83), cover (85) are changeed to blade (84) and second, packing box (1) upper portion front side is connected with third slide rail (81), two seconds are installed to packing box (1) upper portion front side and are changeed cover (85), third slide rail (81) are located the second and change cover (85) upside, the rotary type is connected with second pivot (82) between cover (85) inboard is changeed to two seconds, the rotary type is connected with lead screw (83) on third slide rail (81), threaded connection has blade (84) on lead screw (83).

7. The paper packing case with double-layer buffering function as claimed in claim 6, wherein: still including portable mechanism (9), portable mechanism (9) are including portable portion (91), fixed part (92), fourth slide rail (93), sixth spring (94) and second sliding sleeve (76), packing box (1) left and right sides upper portion all is connected with two fixed parts (92), all install fourth slide rail (93) in fixed part (92), all sliding connection has second sliding sleeve (76) on fourth slide rail (93), equal rotary type is connected with portable portion (91) between two adjacent sliding sleeve (76) outsides, all be connected with sixth spring (94) between second sliding sleeve (76) downside and fixed part (92) downside inner wall.

8. The paper packing case with double-layer buffering function as claimed in claim 7, wherein: the novel screw rod mechanism is characterized by further comprising a handle (10), wherein the handle (10) is connected to the left side of the screw rod (83).