A packaging bag

Abstract

The present application relates to a kind of packing bag, the packing bag includes: bag body and sealing mechanism, the sealing mechanism is arranged on the bag body, can close the bag body, the sealing mechanism includes abutment piece and pull-out component, the pull-out component is hinged on the abutment piece, the bag body open end passes through the abutment piece and is clamped by the pull-out component to close opening, torsion spring is arranged between the pull-out component and abutment piece, the torsion spring can make the included angle between the pull-out component and abutment piece expand, the advantage of the present application is that: by setting sealing mechanism, the bag body can be sealed, and make bag body always keep swollen state, to protect the goods contained in the inside;By setting torsion spring and rotating member, when gas in bag body appears leakage, by torsion spring driving rotating member rotates, can cooperate abutment piece and make bag body keep swelling state.

Description

Technical Field

[0001] This invention relates to the field of packaging, and in particular to a packaging bag. Background Technology

[0002] Packaging bags are widely used in product packaging due to their flexibility and portability. Common packaging bags include disposable plastic bags and vacuum packaging bags.

[0003] In food packaging, to protect food from being squeezed and deformed, air is often inflated into the packaging bag to prevent it from deforming due to pressure. However, existing inflatable packaging bags are often not reusable, and sealing with sealing strips cannot achieve a sufficiently good seal, leading to air leakage. After a small amount of air leaks out, the packaging bag can deform drastically in a localized area, which greatly reduces the protective effect of the packaging bag. Summary of the Invention

[0004] Therefore, it is necessary to provide a packaging bag that can be reused and whose internal pressure can be controlled to keep the packaging bag in an inflated state, in order to address the above problems.

[0005] This invention discloses a packaging bag, which includes a bag body and a sealing mechanism. The sealing mechanism is disposed on the bag body and is capable of closing the bag body. The sealing mechanism includes a retaining member and a pull-out assembly. The pull-out assembly is hinged to the retaining member. The open end of the bag body passes through the retaining member and is clamped by the pull-out assembly to close the opening. A torsion spring is disposed between the pull-out assembly and the retaining member, and the torsion spring can increase the included angle between the pull-out assembly and the retaining member.

[0006] In one embodiment, the abutment is provided with a first through hole, and a first sealing assembly is provided in the first through hole. The bag passes through the first through hole and is clamped and sealed by the first sealing assembly. The first sealing assembly includes an abutment plate and a sealing roller. A guide groove is provided on both sides of the first through hole. The two ends of the sealing roller are slidably disposed in the guide groove. A first elastic member is provided in the guide groove. The first elastic member abuts against the sealing roller, thereby causing the sealing roller to abut against the abutment plate.

[0007] In one embodiment, the pull-out assembly includes a rotating member and a clamping disk. One end of the rotating member is rotatably connected to the supporting member, and the clamping disk is rotatably disposed on the rotating member. A second through hole is provided in the center of the clamping disk, and a second sealing assembly is disposed in the second through hole. The open end of the bag passes through the second through hole and is clamped and closed by the second sealing assembly.

[0008] In one embodiment, a receiving groove is formed on the inner wall of the second through hole, and the second sealing assembly includes a left elastic member, a left clamping block, a right elastic member, and a right clamping block. One end of the left elastic member abuts against the inner wall of the receiving groove, and the other end abuts against the left clamping block. One end of the right elastic member abuts against the inner wall of the receiving groove, and the other end abuts against the right clamping block, so that the left clamping block and the right clamping block move closer to each other and clamp the bag body.

[0009] In one embodiment, the supporting member is provided with a fan-shaped guide block, and the side of the fan-shaped guide block is provided with a plurality of parallel actuating grooves. The clamping disk is provided with a plurality of actuating blocks in a ring. The axis of the fan-shaped guide block is perpendicular to the axis of the clamping disk. Thus, when the rotating member rotates, the actuating blocks can enter the actuating grooves one by one in sequence, thereby causing the clamping disk to rotate.

[0010] In one embodiment, the rotating component has a vertical groove and a horizontal groove, the clamping disk is disposed in the horizontal groove, the fan-shaped guide block is disposed in the vertical groove, and the vertical groove and the horizontal groove are connected, and the clamping disk is connected to the fan-shaped guide block.

[0011] In one embodiment, the rotating component is provided with an arc-shaped connecting block, and an annular connecting groove is provided on the lower side of the clamping disk. The arc-shaped connecting block is slidably disposed in the annular connecting groove, thereby enabling the clamping disk to rotate.

[0012] In one embodiment, a horizontal connecting block is provided on the rotating component along the horizontal direction, and a pressing block is slidably provided on the horizontal connecting block. The pressing block is located above the clamping disk, thereby restricting the upward movement of the clamping disk.

[0013] In one embodiment, the pressing block has a third through hole, which is coaxial with the second through hole.

[0014] In one embodiment, the abutment has a funnel portion with a flared end and a constricted end. The opening end of the bag extends into the bag from the flared end and extends out from the constricted end, so that the inner wall of the funnel portion can fit against the bag in an inflated state.

[0015] The advantages of this invention are:

[0016] By setting a sealing mechanism, the bag can be sealed and kept in an inflated state, thus protecting the contents inside.

[0017] By setting a torsion spring and a rotating component, when gas leaks inside the bag, the torsion spring drives the rotating component to rotate, which, together with the supporting component, keeps the bag in an inflated state.

[0018] By setting a clamping disc, the clamping disc can rotate synchronously when the rotating part rotates relative to the supporting part, thereby twisting the bag opening to further improve the sealing effect of the bag and reduce leakage. Attached Figure Description

[0019] Figure 1 A perspective view of a packaging bag provided by the present invention;

[0020] Figure 2 A perspective view of a packaging bag in another working state provided by the present invention;

[0021] Figure 3 A front view of a sealing mechanism for a packaging bag provided by the present invention;

[0022] Figure 4 According to the present invention Figure 3 A cross-sectional view of surface AA;

[0023] Figure 5 According to the present invention Figure 4 A magnified view of a portion at point B;

[0024] Figure 6 According to the present invention Figure 4 A cross-sectional view of another working state from a different perspective;

[0025] Figure 7 A perspective view of the clamping disc provided by the present invention;

[0026] Figure 8 A perspective view of the abutment member provided by the present invention;

[0027] Figure 9 A perspective view of the rotating component provided by the present invention.

[0028] In the figure, the components are: bag body 1, sealing mechanism 2, abutment 3, first through hole 31, guide groove 311, first elastic element 312, first sealing assembly 32, abutment plate 321, sealing roller 322, fan-shaped guide block 33, actuating groove 331, funnel part 34, flared end 341, constricted end 342, pull-out assembly 4, rotating part 41, vertical groove 411, horizontal groove 412, arc-shaped connecting block 413, horizontal connecting block 414, pressing block 415, third through hole 416, clamping plate 42, second through hole 421, receiving groove 422, second sealing assembly 43, left elastic element 431, left clamping block 432, right elastic element 433, right clamping block 434, actuating block 423, and annular connecting groove 425. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that when a component is said to be "attached" to another component, it can be directly on the other component or it can be in the middle of another component. When a component is said to be "set" to another component, it can be directly set to the other component or it may also be in the middle of another component. When a component is said to be "fixed" to another component, it can be directly fixed to the other component or it may also be in the middle of another component.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] like Figure 1 and Figure 2 As shown, this invention discloses a packaging bag, which includes: a bag body 1 and a sealing mechanism 2. The sealing mechanism 2 is disposed on the bag body 1 and is capable of sealing the bag body 1. Figures 7 to 9 As shown, the sealing mechanism 2 includes a retaining member 3 and a pull-out assembly 4. The pull-out assembly 4 is hinged to the retaining member 3. The open end of the bag body 1 passes through the retaining member 3 and is clamped by the pull-out assembly 4 to close the opening of the bag body 1. A torsion spring (not shown) is provided between the pull-out assembly 4 and the retaining member 3. The torsion spring can increase the included angle between the pull-out assembly 4 and the retaining member 3.

[0033] It should be noted that while the opening of the bag body 1 can be sealed by clamping it, there will be a small amount of gas leakage, causing the bag body 1 to gradually deflate. When subjected to local compression, the contents inside may be crushed and damaged. The present invention, through the action of the supporting member 3 and the pull-out assembly 4, ensures that the bag body 1 can always remain in an inflated state, thereby protecting the contents inside.

[0034] Preferred, such as Figure 4As shown, the supporting member 3 is provided with a first through hole 31, and a first sealing assembly 32 is provided in the first through hole 31. The bag body 1 passes through the first through hole 31 and is clamped and sealed by the first sealing assembly 32. The first sealing assembly 32 includes an abutment plate 321 and a sealing roller 322. A guide groove 311 is provided on both sides of the first through hole 31. The two ends of the sealing roller 322 are slidably disposed in the guide groove 311. A first elastic member 312 is provided in the guide groove 311. The first elastic member 312 abuts against the sealing roller 322, thereby causing the sealing roller 322 to abut against the abutment plate 321.

[0035] It is understandable that by setting the first sealing component 32, the opening of the bag body 1 can be clamped, thereby sealing the bag body 1, and by setting the sealing roller 322, the bag body 1 can move while maintaining the clamped state.

[0036] Preferred, combined Figure 4 As shown, the pull-out assembly 4 includes a rotating component 41 and a clamping disk 42. One end of the rotating component 41 is rotatably connected to the supporting component 3. The clamping disk 42 is rotatably disposed on the rotating component 41. A second through hole 421 is provided in the center of the clamping disk 42. A second sealing component 43 is disposed in the second through hole 421. The open end of the bag body 1 passes through the second through hole 421 and is clamped and closed by the second sealing component 43.

[0037] It is worth mentioning that, combined with Figure 1 and Figure 2 As shown, the second sealing assembly 43 has a greater clamping force on the bag body 1 than the first sealing assembly 32. Therefore, when the rotating member 41 rotates relative to the supporting member 3, the second sealing assembly 43 can stably clamp the bag body 1, allowing the bag body 1 to move within the first through hole 31.

[0038] Preferably, a receiving groove 422 is provided on the inner wall of the second through hole 421, and the second sealing assembly 43 includes a left elastic member 431, a left clamping block 432, a right elastic member 433, and a right clamping block 434. One end of the left elastic member 431 abuts against the inner wall of the receiving groove 422, and the other end abuts against the left clamping block 432. One end of the right elastic member 433 abuts against the inner wall of the receiving groove 422, and the other end abuts against the right clamping block 434, so that the left clamping block 432 and the right clamping block 434 move closer to each other and clamp the bag body 1.

[0039] It is understandable that the left elastic element 431 and the right elastic element 433 work together to clamp the bag body 1 with the left clamping block 432 and the right clamping block 434.

[0040] Preferably, the supporting member 3 is provided with a fan-shaped guide block 33, and the side of the fan-shaped guide block 33 is provided with a plurality of parallel actuating grooves 331. The clamping disk 42 is provided with a plurality of actuating blocks 423 arranged in a ring. The axis of the fan-shaped guide block 33 is perpendicular to the axis of the clamping disk 42, so that when the rotating member 41 rotates, the actuating blocks 423 can enter the actuating grooves 331 one by one, thereby causing the clamping disk 42 to rotate.

[0041] Understandably, the actuating blocks 423 enter the actuating grooves 331 one by one, so that the rotating component 41 can drive the clamping plate 42 to rotate when it rotates, thereby causing the bag body 1 to twist, which can further improve the sealing performance of the bag body 1.

[0042] Preferably, the rotating component 41 has a vertical groove 411 and a horizontal groove 412, the clamping disk 42 is disposed in the horizontal groove 412, the fan-shaped guide block 33 is disposed in the vertical groove 411, and the vertical groove 411 and the horizontal groove 412 are connected, and the clamping disk 42 is connected to the fan-shaped guide block 33.

[0043] Preferably, the rotating component 41 is provided with an arc-shaped connecting block 413, and the clamping disk 42 has an annular connecting groove 425 on its lower side. The arc-shaped connecting block 413 is slidably disposed in the annular connecting groove 425, thereby enabling the clamping disk 42 to rotate.

[0044] Preferably, a horizontal connecting block 414 is provided on the rotating member 41 along the horizontal direction, and a pressing block 415 is slidably provided on the horizontal connecting block 414. The pressing block 415 is located above the clamping plate 42, thereby restricting the clamping plate 42 from moving upward.

[0045] Preferably, the pressing block 415 has a third through hole 416, which is coaxially arranged with the second through hole 421.

[0046] It is understandable that the clamping plate 42 is fixed by setting the pressure block 415.

[0047] Preferably, the supporting member 3 has a funnel portion 34, which has a flared end 341 and a constricted end 342. The opening end of the bag body 1 extends into the bag body 1 from the flared end 341 and extends out from the constricted end 342, so that the inner wall of the funnel portion 34 can fit against the bag body 1 in the inflated state.

[0048] It should be noted that the surface of the bag body 1 is similar to a sphere when it is inflated. By setting the funnel part 34, it can better fit the surface of the bag body 1, prevent the items inside the bag body 1 from being squeezed, and allow the bag body 1 to gradually close up and enter the first through hole 31.

[0049] The working principle of this invention is as follows:

[0050] like Figure 1 and Figure 4 As shown, at this time, the rotating part 41 abuts against the supporting part 3, the torsion spring is compressed and deformed, the second through hole 421 is coaxial with the first through hole 31, the open end of the bag body 1 passes through the first through hole 31 and the second through hole 421, and the first sealing assembly 32 and the second sealing assembly 43 clamp the bag body 1 to close the opening of the bag body 1.

[0051] However, since the sealing effect of the clamping and sealing cannot guarantee a complete seal, the bag body 1 will slowly leak air. At this time, the rotating part 41 rotates relative to the supporting part 3 under the action of the torsion spring, thereby causing the supporting part 3 to squeeze the bag body 1, keeping the bag body 1 in a fully expanded state. As the rotating part 41 rotates, the actuating block 423 on the clamping plate 42 moves along the actuating groove 331 on the fan-shaped guide block 33, thereby causing the clamping plate 42 to rotate, which in turn causes the bag body 1 between the clamping plate 42 and the supporting part 3 to twist. Figure 2 and Figure 6 As shown, this further improves the sealing of the opening of bag 1.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A package, characterized in that The packaging bag comprises a bag body and a sealing mechanism arranged on the bag body and capable of sealing the bag body, the sealing mechanism comprises a bearing part and a pulling assembly, the bag body opening end passes through the bearing part and is clamped by the pulling assembly to seal the opening, a torsion spring is arranged between the pulling assembly and the bearing part, the torsion spring can expand the included angle between the pulling assembly and the bearing part, A first through hole is arranged on the bearing part, a first sealing assembly is arranged in the first through hole, the bag body passes through the first through hole and is clamped and sealed by the first sealing assembly, the first sealing assembly comprises an abutting plate and a sealing roller, a guide groove is arranged on both sides of the first through hole, the sealing roller is slidably arranged at both ends of the guide groove, a first elastic member is arranged in the guide groove and abuts against the sealing roller, so that the sealing roller abuts against the abutting plate, The pulling assembly comprises a rotating part and a clamping disc, one end of the rotating part is rotatably connected to the bearing part, the clamping disc is rotatably arranged on the rotating part, a second through hole is arranged in the center of the clamping disc, a second sealing assembly is arranged in the second through hole, and the bag body opening end passes through the second through hole and is clamped and sealed by the second sealing assembly.

2. The package of claim 1, wherein A containing groove is arranged on the inner wall of the second through hole, the second sealing assembly comprises a left elastic member, a left clamping block, a right elastic member and a right clamping block, one end of the left elastic member abuts against the inner wall of the containing groove, and the other end abuts against the left clamping block, one end of the right elastic member abuts against the inner wall of the containing groove, and the other end abuts against the right clamping block, so that the left clamping block and the right clamping block are close to each other and clamp the bag body.

3. The package of claim 2, wherein, A fan-shaped guide block is arranged on the bearing part, a plurality of parallel arranged actuating grooves are arranged on the side surface of the fan-shaped guide block, a plurality of actuating blocks are annularly arranged on the clamping disc, the axis of the fan-shaped guide block is perpendicular to the axis of the clamping disc, so that when the rotating part rotates, the actuating blocks can enter the actuating grooves one by one, so that the clamping disc rotates.

4. The package of claim 3, wherein, A vertical groove and a horizontal groove are arranged on the rotating part, the clamping disc is arranged in the horizontal groove, the fan-shaped guide block is arranged in the vertical groove, and the vertical groove and the horizontal groove are communicated, and the clamping disc is connected with the fan-shaped guide block.

5. The bag of claim 1, wherein An arc-shaped connecting block is arranged on the rotating part, a ring-shaped connecting groove is arranged on the lower side of the clamping disc, and the arc-shaped connecting block is slidably arranged in the ring-shaped connecting groove, so that the clamping disc can rotate.

6. The package of claim 5, wherein, A horizontal connecting block is arranged on the rotating part in the horizontal direction, a pressing block is slidably arranged on the horizontal connecting block, and the pressing block is located above the clamping disc, so as to limit the upward movement of the clamping disc.

7. The package of claim 6, wherein, A third through hole is arranged on the pressing block, and the third through hole is coaxially arranged with the second through hole.

8. The bag of claim 1, wherein The bearing part has a funnel part, the funnel part has an expanding end and a narrowing end, the opening end of the bag body extends into the expanding end and extends out of the narrowing end, so that the inner wall of the funnel part can be attached to the bag body in the inflated state.

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