CN112849753A

CN112849753A - Moisture-proof plastic packaging bag

Info

Publication number: CN112849753A
Application number: CN202110018818.6A
Authority: CN
Inventors: 吴新明; 朱颖
Original assignee: Huaibei Minnong Biotechnology Co Ltd
Current assignee: Huaibei Minnong Biotechnology Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-05-28

Abstract

The invention belongs to the technical field of food packaging, and particularly relates to a moisture-proof plastic packaging bag which comprises a storage box, a bag body, a transmission mechanism and an elastic supporting mechanism, wherein the storage box is arranged on the bag body; the storage box is a hollow cuboid; an opening is formed in the upper part of the storage box; the inner cavity of the storage box is fixedly connected with a telescopic rod; the inside of the telescopic rod is used as an elastic supporting piece through a spring; one side of the telescopic rod, which is close to the opening of the storage box, is fixedly connected with a supporting plate; the bag body comprises an outer bag body and an inner bag body; through setting up the inner bag body and the outer bag body and air duct, utilize the connection piece that elastic material made to form shrink effect to the inner bag body, and then shift the air in the inner bag body to the outer bag body in the inflation strip and form the support, and then utilize expanded outer bag body to form the protective layer when making the internal shrink state that keeps of inner bag effectively, and then play the inside storage of bleeding of outside protection, slow down the rate of moisture to internal diffusion of bag effectively.

Description

Moisture-proof plastic packaging bag

Technical Field

The invention belongs to the technical field of food packaging, and particularly relates to a moisture-proof plastic packaging bag.

Background

In most cases, dry food materials in the existing life need to be stored in a sealed mode so as to prevent the food materials from absorbing moisture and getting damp and further causing the food materials to deteriorate and be incapable of being eaten, because the plastic packaging bags have good air blocking effect, most sealing bags in the prior art are made of plastic materials, and because the food materials need to be frequently used during storage, most packaging bags in the prior art are sealed through clamping strips so as to achieve the effects of real-time sealing and opening, but because the bag bodies are communicated with the outside when the food materials are taken, air with heavy external moisture enters the bag bodies to have certain influence on the food materials in the bag bodies, and because most of the dry food materials are crisp in texture, the food materials in the bag bodies are easily subjected to external force during vacuumizing storage, so that the food materials are crushed, and after the sealing performance of the vacuumized bag bodies is damaged, when the bag body recovers deformation, a large amount of outside air is extracted, and the food material damping rate is further accelerated.

A dampproofing damp proof plastic packaging bag that china patent issued, application number: 2019210899407, including a bag body, a bag mouth is arranged at the upper end of the bag body, and a bag mouth sleeve, the bottom end of the bag mouth sleeve is sleeved on the upper peripheral surface of the bag body, so that the bag mouth extends to the inside of the bag mouth sleeve, and a first heat sealing part is arranged between the bottom end of the bag mouth sleeve and the bag body; the inner wall of the pocket cover is fixedly provided with a PVC clip chain, and the height of the pocket opening in the pocket cover is higher than that of the PVC clip chain; the sack cover top is equipped with second heat-seal portion, this scheme has split type bag body and sack cover structure, the PVC clamp chain is located the sack outside, do not influence the normal use of sack after unsealing, still can be with sack secondary seal, dampproofing moisture-proof leakproofness is good, convenient to use, safety and sanitation, but because this moisture-proof wrapping bag can't be effectively when storing up dry edible material the sack state that opens and shuts for a long time in the bag between switching damp-proofing, can't protect the material of the internal of bag when bleeding simultaneously and storing, to the drying, the storage of breakable object is not suitable for.

In view of the above, the invention develops a moisture-proof plastic packaging bag to solve the technical problems.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problem that when dry food materials are packaged in an existing packaging bag, due to the fact that a bag opening needs to be opened frequently, the food materials in the packaging bag are easily affected by moisture and are prone to going bad, the invention provides the moisture-proof plastic packaging bag.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a moisture-proof plastic packaging bag which comprises a storage box, a bag body, a transmission mechanism and an elastic supporting mechanism, wherein the storage box is arranged on the bag body;

the storage box is a hollow cuboid; an opening is formed in the upper part of the storage box; the inner cavity of the storage box is fixedly connected with a telescopic rod; the inside of the telescopic rod is used as an elastic supporting piece through a spring; one side of the telescopic rod, which is close to the opening of the storage box, is fixedly connected with a supporting plate;

the bag body comprises an outer bag body and an inner bag body; the outer bag body is uniformly and fixedly connected to the inner wall of the storage box; the outer bag body is formed by compounding non-woven fabrics and high polymer polyethylene materials; the inner bag body is fixedly connected above the supporting plate; the inner bag body is made of low molecular polyethylene plastic material; the two inner sides of one end of the inner bag body and one end of the outer bag body, which are far away from the storage box, are fixedly connected with clamping strips; the clamping strips are matched with each other and are used for sealing the inner bag body and the outer bag body;

the transmission mechanism comprises a transmission box, a driving wheel, a driven wheel and a connecting piece; the transmission box is fixedly connected between the supporting plate and the telescopic rod; a positioning rod is fixedly connected in the inner cavity of the transmission box; one side of the positioning rod, which is far away from the supporting plate, is fixedly connected with elastic pieces which are uniformly distributed; the driving wheel is sleeved on the positioning rod in a sliding manner and is meshed with the elastic sheet; one side of the driving wheel, which is close to the supporting plate, is elastically connected with the supporting plate through a spring; the transmission box is rotatably connected with winding shafts which are uniformly distributed around the edge of the supporting plate; the driven wheels are fixedly connected to one end of the winding shaft, which is far away from the supporting plate; the driven wheels are connected with each other through a belt; the driven wheel close to the driving wheel is meshed with the driving wheel; one side of the driving wheel, which is far away from the supporting plate, is fixedly connected with a transmission rod; the transmission rod penetrates through the transmission box and the storage box; the transmission box is provided with first through grooves corresponding to the winding shafts; the connecting sheet is fixedly connected to one side of the first through groove, which is close to the supporting plate; one end of the connecting sheet, which is far away from the transmission box, extends to one side of the inner bag body, which is far away from the supporting plate; one end of the connecting sheet, which is far away from the transmission box, is designed to be in a sticky way and is fixedly connected with the inner bag body; a first through hole is formed in the connecting sheet; the first through hole and the first through groove are in a conduction design; a transmission line is fixedly connected in the first through hole; the transmission line extends into the transmission box and is wound on the winding shaft;

the elastic support structure comprises an expansion strip and an air duct; the expansion strip is a cylindrical cavity type structural body; the expansion strip is made of elastic rubber material; the expansion strips are uniformly distributed on the inner wall of the outer bag body; one end of each expansion strip, which is close to the storage box, is fixedly connected with an air guide pipe; the air duct is a one-way air duct; the air duct penetrates through the support plate and extends into the inner cavity of the inner bag body; the expansion strips are positioned at the opening of the outer bag body and fixedly connected with an adsorption plate together; the adsorption plate is made of magnetic soft plates with mutual adsorption; the expansion strip is provided with micropores on the side opposite to the adsorption plate, and the micropores are in a closed state in an initial state;

in most cases, dry food materials in the existing life need to be stored in a sealed mode so as to prevent the food materials from absorbing moisture and getting damp and further causing the food materials to deteriorate and be incapable of being eaten, because the plastic packaging bags have good air blocking effect, most sealing bags in the prior art are made of plastic materials, and because the food materials need to be frequently used during storage, most packaging bags in the prior art are sealed through clamping strips so as to achieve the effects of real-time sealing and opening, but because the bag bodies are communicated with the outside when the food materials are taken, air with heavy external moisture enters the bag bodies to have certain influence on the food materials in the bag bodies, and because most of the dry food materials are crisp in texture, the food materials in the bag bodies are easily subjected to external force during vacuumizing storage, so that the food materials are crushed, and after the sealing performance of the vacuumized bag bodies is damaged, when the bag body recovers deformation, a large amount of outside air is extracted, the moisture-affected rate of food materials is further accelerated, in operation, the clamping strips of the inner bag body and the outer bag body are separated from each other, the inner bag body and the outer bag body are further opened, the food materials are placed in the inner bag body, the clamping strips on the inner bag body and the outer bag body are folded again, at the moment, the transmission rod is rotated, the transmission rod drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate when the driving wheel rotates, the driven wheel drives the winding shaft to rotate, the winding shaft winds and gradually tightens the transmission line, so that the connecting sheets fixedly connected with the other end of the transmission line are stressed to be folded in the first through groove, extrusion force is formed on the inner bag body in the process that the plurality of connecting sheets are all folded, the inner bag body is folded, the volume of the inner bag body is gradually reduced in, the inflation volume of the expansion strip is increased to form a supporting function for the outer bag body, so that an elastic supporting protective layer is formed on the outer side of the outer bag body, meanwhile, when the outer bag body is closed, the adsorption plates are mutually attached, and along with the increase of the internal air pressure of the expansion strip, the micropores are opened, so that part of gas is transferred to a cavity formed between the adsorption plates and the clamping strips, and the sealing performance between the two adsorption plates is effectively enhanced, when the outer bag body and the inner bag body need to be opened, the driving wheel slides on the positioning rod by pressing the transmission rod, so that the driving wheel is disengaged from the driven wheel, at the moment, the inner bag body is pulled, the inner bag body can be unfolded, through the arrangement of the inner bag body, the outer bag body and the air guide pipe, a contraction effect is formed on the inner bag body by utilizing the connecting sheet made of the elastic material, so that the air in the inner bag body is transferred to form a support, the simultaneous design adsorption plate, form a sealed cavity that possesses certain atmospheric pressure between outer bag body and adsorption plate, can avoid the infiltration in the outside air to outer bag body inner chamber effectively, and when outer bag body opening part gas leakage, the gaseous reduction drives outer bag body shrink in the inflation strip, extrude the gas in the outer bag body inner chamber to the external world, and then delay the speed of external moisture infiltration in to the inner bag body effectively, play damp-proof damp-proofing effect effectively, the form of connection piece and inner bag body adhesion can also be effectively in time changed when the inner bag body is impaired.

Preferably, the driving wheel is in a T-shaped design; the T-shaped minimum end of the driving wheel is close to the support plate; the side wall of one end of the driving wheel close to the supporting plate is rotatably connected with a one-way ring; the inner wall of the one-way ring is fixedly connected with helical teeth which are uniformly distributed; the connecting part of the driving wheel and the one-way ring is provided with chutes which are uniformly distributed; the one-way ring and the driving wheel realize one-way meshing transmission through the helical teeth and the chute; one side of the one-way ring, which is close to the T-shaped maximum end of the driving wheel, is fixedly connected with a clockwork spring; one end of the clockwork spring, which is far away from the one-way ring, is fixedly connected with the driving wheel; a pull rope is wound outside the one-way ring; the pull rope penetrates through the transmission box and the storage box; one end of the pull rope, which is positioned at the outer side of the storage box, is fixedly connected with a limiting block; the during operation drives the action wheel through rotating the transfer line and rotates comparatively slowly, through setting up one-way ring and stay cord, stimulates the stay cord, makes the stay cord drive one-way ring and rotates, and then makes the catch wheel rotate through the one-way meshing of one-way ring and action wheel to after loosening the stay cord, make one-way clitellum move the stay cord automatic re-setting under the elasticity reset action of clockwork spring, make the shrink of the inner bag body more swift, convenient effectively.

Preferably, the storage box comprises an outer shell and an inner shell; the outer shell and the inner shell are both cavity type cuboids with openings at the upper parts; the adjacent sides of the outer shell and the inner shell are both provided with openings, and the inner shell extends into the inner cavity of the outer shell; the joint of the inner shell and the outer shell is rotationally connected through a rotating shaft; the during operation, set up the receiver into shell body and interior casing, and rotate through the axis of rotation and connect, can be effectively at the save in-process, it is folding with the inner bag body and outer bag body, and rotate outer casing and inner casing body relatively, and then make interior casing and shell body fold relatively, preserve the bag body with the inner chamber of interior casing and shell body in, be convenient for accomodate on the one hand, make dampproofing plastic packaging bag portable and use, folding accomodating simultaneously, preserve the ageing rate that can also delay the inner bag body and outer bag body effectively, make the inner bag body longer with the life of the outer bag body.

Preferably, two side walls of the outer shell are provided with first sliding grooves; the rotating shafts are connected in the first sliding groove in a sliding manner; the inner wall of the outer shell is matched with the outer wall of the inner shell; the supporting plates are designed in a plural number and are symmetrically arranged in the inner cavities of the inner shell and the outer shell; a first groove is formed between the symmetrical transmission rods of the outer shell and the inner shell; the transmission rod is connected in the first groove in a sliding manner; the outer bag body is fixedly connected with the outer shell and the inner shell in a dotted manner; the during operation, through seting up first spout, and make axis of rotation sliding connection in first spout, when using, when the horizontal length of the bag body is great, promote interior casing and slide in the shell body, and then make the axis of rotation slide in first spout, when interior casing and shell body fold each other, make interior bag body and outer bag body carry out automatic folding, the coincidence, and then reduce the horizontal length of the outer bag body and interior bag body effectively, be convenient for accomodating of the interior bag body and outer bag body and store the attachability of the internal object of bag.

Preferably, the upper end of the first chute is fixedly connected with a rack; the rotating shaft is positioned in the first sliding groove and fixedly connected with an engaging wheel; the inner bag body is fixedly connected with the rotating shaft close to the rotating shaft part; the during operation, because the storage has article in the inner bag body, when interior casing and shell body relative motion, overlap, the inner bag body makes the object drop in the backup pad below easily, through linking firmly the inner bag body and axis of rotation, receives the meshing effect of meshing wheel and rack when the axis of rotation slides in first spout, makes the axis of rotation rotate, and then twines part inner bag body in the axis of rotation, avoids the in-process inner bag body of closing up relatively to lose the restriction effectively and drops to the backup pad below.

Preferably, the winding shaft is fixedly connected with a poking plate; the supporting plate is positioned at the periphery of the winding shaft and fixedly connected with an auxiliary ring; the auxiliary ring is fixedly connected with an air pumping bag; the air duct extends into the air exhaust bag, and the air exhaust bag conducts the inner cavity of the inner bag body and the expansion strip in a single direction through the air duct; during operation, the action wheel drives from the driving wheel and drives the stirring plate to rotate in the auxiliary ring when the spool rotates, and then makes the stirring plate extrude, relax the air exhaust bag, and then makes the air exhaust bag cooperate the air duct to extract the internal gas of inner bag, and carry to the inflation strip in, avoid the connection piece to eat the too big edible material of material extrusion force degree and lead to eating the material impaired to the internal bag of inner bag when making the gaseous extraction of inner bag body more thorough effectively.

The invention has the following beneficial effects:

1. the moisture-proof plastic packaging bag has the advantages that the inner bag body, the outer bag body and the air duct are arranged, the connecting sheet made of the elastic material has a contraction effect on the inner bag body, further transferring the air in the inner bag body to the expansion strip to support the outer bag body, further effectively keeping the inner bag body in a contraction state, simultaneously forming a protective layer by utilizing the expanded outer bag body, simultaneously designing an adsorption plate, a sealed chamber with certain air pressure is formed between the outer bag body and the adsorption plate, so that the external air can be effectively prevented from permeating into the inner cavity of the outer bag body, when the gas at the opening of the outer bag body leaks, the gas in the expansion strip is reduced to drive the outer bag body to contract, the gas in the inner cavity of the outer bag body is extruded to the outside, thereby effectively delaying the penetration rate of external moisture into the inner bag body, effectively playing the role of moisture prevention and damp prevention, meanwhile, the connecting sheet and the inner bag body can be effectively replaced in time when the inner bag body is damaged in an adhesion mode.

2. According to the moisture-proof plastic packaging bag, the driving wheel is arranged to drive the driven wheel and the winding shaft to rotate, the poking plate is driven to rotate in the auxiliary ring, the poking plate is further enabled to extrude and release the air exhaust bag, the air exhaust bag is further enabled to be matched with the air guide pipe to extract gas in the inner bag body and convey the gas to the expansion strips, so that the gas in the inner bag body is effectively extracted more thoroughly, and the phenomenon that food materials are damaged due to overlarge extrusion force of the connecting sheet on the food materials in the inner bag body is avoided.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is an enlarged view of a portion of FIG. 2 at C;

FIG. 6 is a front view of the positioning rod;

in the figure: the storage box 1, the outer shell 11, the inner shell 12, the rotating shaft 13, the telescopic rod 14, the support plate 15, the first chute 16, the first groove 17, the rack 18, the meshing wheel 19, the outer bag 2, the inner bag 21, the clamping strip 22, the transmission box 3, the positioning rod 31, the elastic sheet 32, the driving wheel 33, the winding shaft 34, the driven wheel 35, the transmission rod 36, the first through groove 37, the connecting sheet 38, the first through hole 39, the transmission line 4, the one-way ring 41, the spiral spring 42, the pull rope 43, the limiting block 44, the expansion strip 5, the air duct 51, the adsorption plate 52, the stirring plate 6, the auxiliary ring 61 and the air exhaust bag 62.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the moisture-proof plastic packaging bag of the present invention comprises a storage box 1, a bag body, a transmission mechanism and an elastic support mechanism;

the storage box 1 is a hollow cavity type cuboid; an opening is formed in the upper part of the storage box 1; an inner cavity of the storage box 1 is fixedly connected with a telescopic rod 14; the inside of the telescopic rod 14 is used as an elastic supporting piece through a spring; a supporting plate 15 is fixedly connected to one side, close to the opening of the storage box 1, of the telescopic rod 14;

the bag body comprises an outer bag body 2 and an inner bag body 21; the outer bag body 2 is uniformly and fixedly connected to the inner wall of the storage box 1; the outer bag body 2 is formed by compounding non-woven fabrics and high polymer polyethylene materials; the inner bag body 21 is fixedly connected above the supporting plate 15; the inner bag body 21 is made of low molecular polyethylene plastic material; the inner sides of the two ends of the inner bag body 21 and the outer bag body 2, which are far away from the storage box 1, are fixedly connected with clamping strips 22; the clamping strips 22 are matched with each other and used for sealing the inner bag body 21 and the outer bag body 2;

the transmission mechanism comprises a transmission box 3, a driving wheel 33, a driven wheel 35 and a connecting piece 38; the transmission box 3 is fixedly connected between the support plate 15 and the telescopic rod 14; a positioning rod 31 is fixedly connected in the inner cavity of the transmission box 3; one side of the positioning rod 31, which is far away from the supporting plate 15, is fixedly connected with elastic pieces 32 which are uniformly distributed; the driving wheel 33 is sleeved on the positioning rod 31 in a sliding manner, and the driving wheel 33 is engaged with the elastic sheet 32; one side of the driving wheel 33, which is close to the supporting plate 15, is elastically connected with the supporting plate 15 through a spring; the transmission box 3 is rotatably connected with uniformly distributed winding shafts 34 around the edge of the support plate 15; the driven wheels 35 are fixedly connected to one ends of the winding shafts 34 far away from the supporting plate 15; the driven wheels 35 are connected with each other through a belt; the driven wheel 35 close to the driving wheel 33 is meshed with the driving wheel 33; a driving rod 36 is fixedly connected to one side of the driving wheel 33 away from the supporting plate 15; the transmission rod 36 penetrates through the transmission box 3 and the storage box 1; the transmission box 3 is provided with a first through groove 37 corresponding to the winding shaft 34; the connecting sheet 38 is fixedly connected to one side of the first through groove 37 close to the support plate 15; the connecting sheet 38 extends to one side of the inner bag body 21 away from the support plate 15 from one end of the transmission box 3; one end of the connecting sheet 38, which is far away from the transmission box 3, is designed to be in a sticky way and is fixedly connected with the inner bag body 21; a first through hole 39 is formed in the connecting sheet 38; the first through hole 39 and the first through groove 37 are designed to be communicated; the first through hole 39 is fixedly connected with a transmission line 4; the transmission line 4 extends into the transmission box 3 and is wound on the winding shaft 34;

the elastic support structure comprises an expansion strip 5 and an air duct 51; the expansion strip 5 is a cylindrical cavity type structural body; the expansion strip 5 is made of elastic rubber material; the expansion strips 5 are uniformly distributed on the inner wall of the outer bag body 2; one end of each expansion strip 5, which is close to the storage box 1, is fixedly connected with an air duct 51; the air duct 51 is a one-way air duct 51; the air duct 51 penetrates through the support plate 15 and extends into the inner cavity of the inner bag body 21; the expansion strips 5 are positioned at the opening of the outer bag body 2 and fixedly connected with an adsorption plate 52; the adsorption plate 52 is made of a magnetic soft plate with mutual adsorption; the expansion strip 5 is provided with micropores on the side opposite to the adsorption plate 52, and the micropores are in a closed state in an initial state;

in most cases, dry food materials in the existing life need to be stored in a sealed mode so as to prevent the food materials from absorbing moisture and getting damp and further causing the food materials to deteriorate and being incapable of being eaten, because the plastic packaging bags have good air blocking effect, most sealing bags in the prior art are made of plastic materials, and because the food materials need to be frequently used during storage, most packaging bags in the prior art are sealed through the clamping strips 22 so as to achieve the effects of real-time sealing and opening, but because the bag body is communicated with the outside when the food materials are taken, air with heavy external moisture enters the bag body, certain influence is generated on the food materials in the bag body, and because most of the dry food materials are crisp in texture, the food materials in the bag body are easily subjected to external force during vacuumizing storage, so that the food materials are crushed, and after the vacuumizing bag body is damaged in sealing performance, when the bag body recovers deformation, a large amount of outside air is extracted, the damp rate of food materials is further accelerated, when the bag body works, the clamping strips 22 of the inner bag body 21 and the outer bag body 2 are separated from each other, the inner bag body 21 and the outer bag body 2 are further opened, the food materials are placed in the inner bag body 21, the clamping strips 22 on the inner bag body 21 and the outer bag body 2 are folded again, at the moment, the transmission rod 36 is rotated, the transmission rod 36 drives the driving wheel 33 to rotate, the driving wheel 33 drives the driven wheel 35 to rotate when rotating, further, the driven wheel 35 drives the winding shaft 34 to rotate, the winding shaft 34 winds and gradually tightens the transmission line 4, further, the connecting piece 38 fixedly connected with the other end of the transmission line 4 is forced to be folded into the first through groove 37, extrusion force is formed on the inner bag body 21 in the process that the connecting pieces 38 are all folded, further, the inner bag body 21 is folded, and the, further, the internal air is conveyed to the expansion strips 5 through the air ducts 51, the inflation volume of the expansion strips 5 is increased to support the outer bag body 2, so that an elastic support protection layer is formed on the outer side of the outer bag body 2, meanwhile, when the outer bag body 2 is closed, the adsorption plates 52 are mutually attached, and along with the increase of the internal air pressure of the expansion strips 5, the micropores are opened, so that part of the air is transferred to the cavity formed between the adsorption plates 52 and the clamping strips 22, and further the sealing performance between the two adsorption plates 52 is effectively enhanced, when the outer bag body 2 and the inner bag body 21 need to be opened, the driving wheel 33 slides on the positioning rod 31 by pressing the transmission rod 36, and further the driving wheel 33 is disengaged from the driven wheel 35, at the moment, the inner bag body 21 is pulled, so that the inner bag body 21 can be unfolded, and the connecting piece 38 made of elastic material can form a contraction effect on the inner bag body 21 by arranging, and then shift the air in the inner bag body 21 to the inflation strip 5 in to the outer bag body 2 forms the support, and then utilize expanded outer bag body 2 to form the protective layer when keeping the contraction state in the inner bag body 21 effectively, design adsorption plate 52 simultaneously, form a sealed cavity that possesses certain atmospheric pressure between outer bag body 2 and adsorption plate 52, can avoid external air to permeate in the outer bag body 2 inner chamber effectively, and when outer bag body 2 opening part gas leakage, the gaseous reduction drives outer bag body 2 shrink in the inflation strip 5, extrude the gas in the outer bag body 2 inner chamber to the external world, and then delay the speed that external moisture permeates in the inner bag body 21 effectively, play damp-proof effect effectively, the adhesion form of connection piece 38 and inner bag body 21 can also be changed in time effectively when inner bag body 21 is impaired simultaneously.

As an embodiment of the present invention, the driving wheel 33 is of a "T" shape; the T-shaped minimum end of the driving wheel 33 is close to the supporting plate 15; the side wall of one end of the driving wheel 33 close to the supporting plate 15 is rotatably connected with a one-way ring 41; the inner wall of the one-way ring 41 is fixedly connected with helical teeth which are uniformly distributed; the connecting part of the driving wheel 33 and the one-way ring 41 is provided with chutes which are uniformly distributed; the one-way ring 41 and the driving wheel 33 realize one-way meshing transmission through helical teeth and a chute; one side of the one-way ring 41 close to the T-shaped maximum end of the driving wheel 33 is fixedly connected with a clockwork spring 42; one end of the clockwork spring 42, which is far away from the one-way ring 41, is fixedly connected with the driving wheel 33; a pull rope 43 is wound outside the one-way ring 41; the pull rope 43 penetrates through the transmission box 3 and the storage box 1; one end of the pull rope 43, which is positioned at the outer side of the storage box 1, is fixedly connected with a limiting block 44; during operation, the driving wheel 33 is driven to rotate slowly by rotating the transmission rod 36, the pull rope 43 is pulled by arranging the one-way ring 41 and the pull rope 43, the pull rope 43 drives the one-way ring 41 to rotate, the grab wheel is driven to rotate by one-way meshing of the one-way ring 41 and the driving wheel 33, after the pull rope 43 is loosened, the one-way ring 41 drives the pull rope 43 to automatically reset under the elastic resetting effect of the spiral spring 42, and the inner bag body 21 can be contracted more quickly and conveniently.

As an embodiment of the present invention, the storage case 1 includes an outer case 11 and an inner case 12; the outer shell 11 and the inner shell 12 are both hollow cavity cuboids with openings at the upper parts; the adjacent sides of the outer shell 11 and the inner shell 12 are both designed with openings, and the inner shell 12 extends into the inner cavity of the outer shell 11; the joint of the inner shell 12 and the outer shell 11 is rotationally connected through a rotating shaft 13; in operation, set up receiver 1 into shell body 11 and interior casing 12, and rotate through axis of rotation 13 and connect, can be effectively in the save process, it is folding with inner bag body 21 and outer bag body 2, and with shell body 11 and interior casing 12 relative rotation, and then make interior casing 12 and shell body 11 fold relatively, in preserving the bag body with the inner chamber of interior casing 12 and shell body 11, be convenient for accomodate on the one hand, make dampproofing plastic packaging bag portable and use, folding accomodating simultaneously, the ageing rate that can also delay inner bag body 21 and outer bag body 2 effectively is preserved, make inner bag body 21 and outer bag body 2's life longer.

As an embodiment of the present invention, two side walls of the outer shell 11 are opened with first sliding grooves 16; the rotating shafts 13 are all connected in the first sliding grooves 16 in a sliding manner; the inner wall of the outer shell 11 is matched with the outer wall of the inner shell 12; the supporting plate 15 is designed in plural and symmetrically arranged in the inner cavities of the inner shell 12 and the outer shell 11; a first groove 17 is formed between the symmetrical transmission rods 36 of the outer shell 11 and the inner shell 12; the transmission rod 36 is connected in the first groove 17 in a sliding manner; the outer bag body 2 is fixedly connected with the outer shell 11 and the inner shell 12 in a dotted manner; the during operation, through seting up first spout 16, and make axis of rotation 13 sliding connection in first spout 16, when using, when the great time of bag body lateral length, promote interior casing 12 and slide in outer casing 11, and then make axis of rotation 13 slide in first spout 16, when interior casing 12 and outer casing 11 fold each other, make interior bag body 21 and outer bag body 2 carry out automatic folding, the coincidence, and then reduce the lateral length of outer bag body 2 and interior bag body 21 effectively, be convenient for accomodating of interior bag body 21 and outer bag body 2 and store the attachability of the internal object of bag.

As an embodiment of the present invention, a rack 18 is fixed to the upper end of the first sliding chute 16; the rotating shaft 13 is positioned in the first sliding chute 16 and fixedly connected with an engaging wheel 19; the part of the inner bag body 21 close to the rotating shaft 13 is fixedly connected with the rotating shaft 13; in operation, because the inner bag body 21 stores articles, when inner shell 12 and outer shell 11 move relatively, when overlapping, the inner bag body 21 makes the object drop in backup pad 15 below easily, through linking firmly inner bag body 21 and axis of rotation 13, axis of rotation 13 receives the meshing effect of meshing wheel 19 and rack 18 when sliding in first spout 16, makes axis of rotation 13 rotate, and then twines partial inner bag body 21 on axis of rotation 13, avoids the in-process inner bag body 21 that closes relatively to lose the restriction effectively and drops to backup pad 15 below.

In an embodiment of the present invention, the reel 34 is fixedly connected with the toggle plate 6; the supporting plate 15 is fixedly connected with an auxiliary ring 61 at the periphery of the winding shaft 34; an air pumping bag 62 is fixedly connected in the auxiliary ring 61; the air duct 51 extends into the air exhaust bag 62, and the air exhaust bag 62 conducts the inner cavity of the inner bag body 21 and the expansion strip 5 in one way through the air duct 51; during operation, the driving wheel 33 drives the driven wheel 35 and the winding shaft 34 to rotate, so as to drive the stirring plate 6 to rotate in the auxiliary ring 61, and further the stirring plate 6 extrudes and relaxes the air pumping bag 62, so that the air pumping bag 62 is matched with the air duct 51 to extract the air in the inner bag body 21 and convey the air to the expansion strip 5, so that the air in the inner bag body 21 is effectively extracted more thoroughly, and the phenomenon that the food material is damaged due to too large extrusion pressure of the food material in the inner bag body 21 by the connecting sheet 38 is avoided.

The specific working process is as follows:

when the food bag is in operation, the clamping strips 22 of the inner bag body 21 and the outer bag body 2 are separated from each other, the inner bag body 21 and the outer bag body 2 are opened, food is placed in the inner bag body 21, the clamping strips 22 on the inner bag body 21 and the outer bag body 2 are folded again, at the moment, the transmission rod 36 is rotated, the transmission rod 36 drives the driving wheel 33 to rotate, the driving wheel 33 drives the driven wheel 35 to rotate when rotating, the driven wheel 35 drives the winding shaft 34 to rotate, the winding shaft 34 winds and gradually tightens the transmission wire 4, the connecting piece 38 fixedly connected with the other end of the transmission wire 4 is forced to be folded into the first through groove 37, the plurality of connecting pieces 38 form extrusion force on the inner bag body 21 when being folded, the volume of the inner bag body 21 is gradually reduced when being folded, the gas inside is conveyed into the expansion strips 5 through the gas guide pipe 51, the inflation volume of the expansion strips 5 is increased, the outer bag body 2 is supported, an elastic support protection layer is formed on the outer side of the outer bag body 2, meanwhile, when the outer bag body 2 is closed, the adsorption plates 52 are attached to each other, the micropores are opened along with the increase of the internal air pressure of the expansion strips 5, part of air is transferred to the cavities formed between the adsorption plates 52 and the clamping strips 22, the sealing performance between the two adsorption plates 52 is effectively enhanced, when the outer bag body 2 and the inner bag body 21 need to be opened, the driving wheel 33 slides on the positioning rod 31 by pressing the transmission rod 36, the driving wheel 33 is disengaged from the driven wheel 35, the inner bag body 21 is pulled at the moment, and the inner bag body 21 can be unfolded.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A moisture-proof plastic packaging bag is characterized in that: comprises a storage box (1), a bag body, a transmission mechanism and an elastic supporting mechanism;

the storage box (1) is a hollow cavity type cuboid; an opening is formed in the upper part of the storage box (1); an inner cavity of the storage box (1) is fixedly connected with a telescopic rod (14); the inside of the telescopic rod (14) is used as an elastic supporting piece through a spring; a supporting plate (15) is fixedly connected to one side, close to the opening of the storage box (1), of the telescopic rod (14);

the bag body comprises an outer bag body (2) and an inner bag body (21); the outer bag body (2) is uniformly and fixedly connected to the inner wall of the storage box (1); the outer bag body (2) is formed by compounding non-woven fabrics and high polymer polyethylene materials; the inner bag body (21) is fixedly connected above the supporting plate (15); the inner bag body (21) is made of low molecular polyethylene plastic material; the inner sides of the two ends of the inner bag body (21) and the outer bag body (2) far away from the storage box (1) are fixedly connected with clamping strips (22); the clamping strips (22) are matched with each other and are used for sealing the inner bag body (21) and the outer bag body (2);

the transmission mechanism comprises a transmission box (3), a driving wheel (33), a driven wheel (35) and a connecting piece (38); the transmission box (3) is fixedly connected between the support plate (15) and the telescopic rod (14); a positioning rod (31) is fixedly connected in the inner cavity of the transmission box (3); one side of the positioning rod (31) far away from the supporting plate (15) is fixedly connected with elastic pieces (32) which are uniformly distributed; the driving wheel (33) is sleeved on the positioning rod (31) in a sliding manner, and the driving wheel (33) is engaged with the elastic sheet (32); one side of the driving wheel (33) close to the support plate (15) is elastically connected with the support plate (15) through a spring; the transmission box (3) is rotatably connected with winding shafts (34) which are uniformly distributed around the edge of the support plate (15); the driven wheels (35) are fixedly connected to one ends of the winding shafts (34) far away from the supporting plate (15); the driven wheels (35) are connected with each other through a belt; the driven wheel (35) close to the driving wheel (33) is meshed with the driving wheel (33); one side of the driving wheel (33) far away from the supporting plate (15) is fixedly connected with a transmission rod (36); the transmission rod (36) penetrates through the transmission box (3) and the storage box (1); the transmission box (3) is provided with a first through groove (37) corresponding to the winding shaft (34); the connecting sheet (38) is fixedly connected to one side, close to the supporting plate (15), of the first through groove (37); one end of the connecting sheet (38), which is far away from the transmission box (3), extends to one side, which is far away from the support plate (15), of the inner bag body (21); one end of the connecting sheet (38) far away from the transmission box (3) is designed to be in a sticky manner and is fixedly connected with the inner bag body (21); a first through hole (39) is formed in the connecting sheet (38); the first through hole (39) and the first through groove (37) are designed to be communicated; a transmission line (4) is fixedly connected in the first through hole (39); the transmission line (4) extends into the transmission box (3) and is wound on the winding shaft (34);

the elastic supporting structure comprises an expansion strip (5) and an air duct (51); the expansion strip (5) is a cylindrical cavity type structural body; the expansion strip (5) is made of elastic rubber material; the expansion strips (5) are uniformly distributed on the inner wall of the outer bag body (2); one end of each expansion strip (5) close to the storage box (1) is fixedly connected with an air guide pipe (51); the air duct (51) is a one-way air duct (51); the air duct (51) penetrates through the support plate (15) and extends into the inner cavity of the inner bag body (21); the expansion strips (5) are positioned at the opening of the outer bag body (2) and are fixedly connected with an adsorption plate (52) together; the adsorption plate (52) is made of a magnetic soft plate with mutual adsorption; the expansion strip (5) is provided with micropores on the side opposite to the adsorption plate (52), and the micropores are in a closed state in an initial state.

2. The moisture resistant plastic packing bag as claimed in claim 1, wherein: the driving wheel (33) is in a T-shaped design; the T-shaped minimum end of the driving wheel (33) is close to the support plate (15); the side wall of one end of the driving wheel (33) close to the support plate (15) is rotatably connected with a one-way ring (41); the inner wall of the one-way ring (41) is fixedly connected with helical teeth which are uniformly distributed; the connecting part of the driving wheel (33) and the one-way ring (41) is provided with chutes which are uniformly distributed; the one-way ring (41) and the driving wheel (33) realize one-way meshing transmission through helical teeth and a chute; one side of the one-way ring (41) close to the T-shaped maximum end of the driving wheel (33) is fixedly connected with a clockwork spring (42); one end of the clockwork spring (42) far away from the one-way ring (41) is fixedly connected with the driving wheel (33); a pull rope (43) is wound on the outer side of the one-way ring (41); the pull rope (43) penetrates through the transmission box (3) and the storage box (1); and one end of the pull rope (43) positioned at the outer side of the storage box (1) is fixedly connected with a limiting block (44).

3. The moisture resistant plastic packing bag as claimed in claim 1, wherein: the storage box (1) comprises an outer shell (11) and an inner shell (12); the outer shell (11) and the inner shell (12) are both hollow cavity type cuboids with openings at the upper parts; the adjacent sides of the outer shell (11) and the inner shell (12) are both designed with openings, and the inner shell (12) extends into the inner cavity of the outer shell (11); the joint of the inner shell (12) and the outer shell (11) is rotatably connected through a rotating shaft (13).

4. The moisture resistant plastic packing bag as claimed in claim 3, wherein: two side walls of the outer shell (11) are provided with first sliding grooves (16); the rotating shafts (13) are connected in the first sliding grooves (16) in a sliding manner; the inner wall of the outer shell (11) is matched with the outer wall of the inner shell (12); the supporting plate (15) is designed in a plural number and is symmetrically arranged in the inner cavities of the inner shell (12) and the outer shell (11); a first groove (17) is formed between the symmetrical transmission rods (36) of the outer shell (11) and the inner shell (12); the transmission rod (36) is connected in the first groove (17) in a sliding manner; the outer bag body (2) is fixedly connected with the outer shell (11) and the inner shell (12) in a dotted manner.

5. The moisture resistant plastic packing bag of claim 4, wherein: the upper end of the first sliding chute (16) is fixedly connected with a rack (18); the rotating shaft (13) is positioned in the first sliding groove (16) and fixedly connected with an engaging wheel (19); the part of the inner bag body (21) close to the rotating shaft (13) is fixedly connected with the rotating shaft (13).

6. The moisture resistant plastic packing bag as claimed in claim 1, wherein: the winding shaft (34) is fixedly connected with a poking plate (6); the supporting plate (15) is positioned at the periphery of the winding shaft (34) and fixedly connected with an auxiliary ring (61); an air pumping bag (62) is fixedly connected in the auxiliary ring (61); the air duct (51) extends into the air pumping bag (62), and the air pumping bag (62) conducts the inner cavity of the inner bag body (21) and the expansion strip (5) in a one-way mode through the air duct (51).