Biodegradable plastic-free paper bag and production device therefor

Abstract

A biodegradable plastic-free paper bag and a production device therefor. The paper bag comprises a paper bag body. The paper bag body comprises a modified starch-based waterproofing agent, kraft paper, and a PP synthetic paper core. Openings on two sides of the middle portion of the paper bag body are respectively fixedly connected to movable paperboards by means of Z-shaped plastic films; glue grooves communicated with each other are formed between one side of the lower end of each of the movable paperboards and the surface of the paper bag body; the surfaces of the glue grooves are both provided with plastic films fixedly connected to the surface of the paper bag body; and each of the plastic films is provided with a longitudinal cut III located on one side of the corresponding Z-shaped plastic film, and is provided with a folded corner II longitudinal cut and a folded corner I longitudinal cut at the folded corners of the paper bag body, respectively. The production device comprises a device frame arranged on the ground; the upper end of the device frame is provided with a plurality of drive rollers; a paperboard is arranged on the upper ends of the plurality of drive rollers, and the paperboard is folded into a paper bag body; longitudinal adjustment structures are arranged on two sides of the device frame; a glue injection mechanism for glue injection is arranged between the two longitudinal adjustment structures; and a positioning assembly which works in conjunction with the glue injection mechanism is arranged on two sides of the device frame and located on one side of the glue injection mechanism.

Description

Degradable plastic-free paper bag and production equipment thereof TECHNICAL FIELD

[0001] The present application relates to the field of paper bags, in particular to a degradable plastic-free paper bag and production equipment thereof. BACKGROUND

[0002] Envelope paper bags, as the name implies, are paper bags made of paper, used to hold letters or small items. Their shape and size are usually similar to traditional envelopes. These paper bags not only have the function of protecting the contents, but also become a popular packaging choice because of their material and customizability. The design of envelope paper bags is usually simple and practical, with one or more openings for easy access to the contents. Some envelope paper bags are also equipped with sealing strips or adhesives to ensure the safety and privacy of the contents. In addition, they can be customized as needed, such as adding brand logos, company information, or special patterns, to enhance brand image and promotional effect.

[0003] For example, the application number CN202321494802.3 is an environmentally friendly degradable envelope paper bag. However, there are still some problems in actual use:

[0004] The above-mentioned paper bag glues and fixes the opening of the envelope through the adhesive layer, thereby realizing the full sealing of the paper bag. However, the two sides of the middle part of the paper bag have butt joints, which leads to different thicknesses of the closed paper bag. The thick stack and the thin connection may have unstable adhesive connection and may have cavities, thereby reducing the overall sealing performance of the paper bag.

[0005] At the same time, the adhesive layer of the paper bag has multiple folds, which is not convenient for blocking with release paper. SUMMARY

[0006] In order to improve the poor sealing performance of the paper bag, the present application provides a degradable plastic-free paper bag and production equipment thereof.

[0007] The degradable plastic-free paper bag and production equipment thereof provided by the present application adopt the following technical solutions:

[0008] A degradable plastic-free paper bag, comprising a paper bag body, the paper bag body comprising a modified starch-based waterproof agent, kraft paper and a PP synthetic paper core, the two sides of the middle part of the paper bag body are fixed with movable paper boards through Z-shaped plastic films.

[0009] A glue groove is formed between the lower end of one side of the movable paper board and the surface of the paper bag body, and the glue groove is communicated with the surface of the paper bag body. The surface of the glue groove is provided with a plastic film fixed with the surface of the paper bag body. The plastic film is provided with a longitudinal cut three on one side of the Z-shaped plastic film. The plastic film is provided with a fold angle two longitudinal cut and a fold angle one longitudinal cut at the fold angle of the paper bag body.

[0010] By adopting the above technical scheme, the multiple pre-folding angles are arranged to fill more glue, and the gap between the two folding angles and the longitudinal cut can be filled by moving the paperboard, thereby increasing the sealing performance of the paper bag body, the Z-shaped plastic film has flexibility and sealing performance, can well adapt to the movement of the moving paperboard, and also has a sealing effect.

[0011] Preferably, the PP synthetic paper core is fixed on both sides with kraft paper, one side of the surface of the two kraft papers is fixed with modified starch-based waterproof agent, the outer surface of the moving paperboard is fixed with a protrusion opposite to the glue groove, and the middle part of the surface of the plastic film is provided with an ant line.

[0012] By adopting the above technical scheme, the protrusion is arranged to facilitate the sealing of the paper bag body and increase the extrusion effect of the glue from the glue groove, the ant line is arranged to facilitate the discharge of the glue in the glue groove and also plays a role in isolating the glue during storage.

[0013] A production equipment of degradable plastic-free paper bag, comprising a device frame arranged on the upper end of the ground, a plurality of drive rollers are arranged on the upper end of the device frame, a paperboard is arranged on the upper end of the plurality of drive rollers, and the paperboard is folded into a paper bag body.

[0014] The two sides of the device frame are provided with longitudinal adjustment structures, a glue injection mechanism for injecting glue is arranged between the two longitudinal adjustment structures, and a positioning assembly cooperating with the glue injection mechanism is arranged on one side of the glue injection mechanism.

[0015] By adopting the above technical scheme, the glue injection mechanism and the positioning assembly can cooperate with each other to fill the glue in the glue groove, and the specified position of the plastic film can be effectively cut according to the need, thereby facilitating the storage and sealing of the paper bag body for the articles and facilitating the discharge of the glue in the glue groove.

[0016] Preferably, the longitudinal adjustment structure comprises a fixed frame fixed on the outer surface of the device frame on both sides, a moving plate is slidably arranged in the middle part of the two fixed frames, a screw rod is threadedly arranged at one end of each moving plate, and the lower end of the screw rod is limited with the moving plate.

[0017] By adopting the above technical scheme, the moving plate can be moved longitudinally in the fixed frame by rotating the screw rod, thereby adjusting the height between the glue injection pipe and the upper end surface of the drive roller, and thereby the paper bag body of different thicknesses can be adjusted in real time.

[0018] Preferably, the glue injection mechanism comprises a connecting plate fixed between two moving plates, a linear drive mechanism is fixed on one side of the connecting plate, an intermediate frame is fixed at the movable end of the linear drive mechanism, a glue injection pipe is fixed at one end of the intermediate frame and inserted into the glue groove to inject glue, a cutter is rotatably arranged at the glue outlet end of the glue injection pipe to cut the plastic film, and the upper end of the cutter is provided with a blade.

[0019] By adopting the above technical scheme, the width of the glue injection pipe is smaller than the width of the glue groove, so that the glue injection pipe can be smoothly inserted. The cutter is provided with a protruding part extending downward by a certain distance in the normal state. The protruding part can scrape the discharged glue to avoid direct contact between the glue and the surface of the plastic film, so that a certain distance is maintained, and the glue is more flat and beautiful.

[0020] Preferably, a partition plate is fixed in the upper part of the glue injection pipe. The partition plate divides the inner cavity of the glue injection pipe into a device cavity and a glue injection cavity.

[0021] By adopting the above technical scheme, the glue injection cavity can transport and discharge glue with different viscosities, and the device cavity can isolate the glue.

[0022] Preferably, a fixed plate is fixed on one side of the upper end of the partition plate, a cylindrical column is movably penetrated on one side of the fixed plate and fixed to one side of the cutter, a spiral groove is formed in the surface of the cylindrical column, a pull rod two is movably penetrated on the other side of the fixed plate, and a connecting ball is fixed on one end of the pull rod two and faces one side of the cylindrical column and slides in the spiral groove.

[0023] By adopting the above technical scheme, the fixed plate plays a supporting role, and the connecting ball drives the cylindrical column to rotate to realize linear motion into rotary motion. Therefore, the spiral of the spiral groove needs to be set to realize the rotary ability.

[0024] Preferably, a rectangular port is formed in the upper end of the side of the glue injection pipe away from the cutter and communicates with the device cavity, L-shaped frames are fixed on both sides of the upper end of the rectangular port and on the surface of the glue injection pipe, an activity plate two is rotatably arranged on the middle part of the L-shaped frame and rotatably arranged on one end of the pull rod two, the lower end of the activity plate two penetrates through the rectangular port and is located in the device cavity, and a glue inlet pipe is fixed on one side of the glue injection pipe and communicates with the glue injection cavity.

[0025] By adopting the above technical scheme, the rectangular port is provided to avoid interference between the activity plate two and the glue injection pipe when the activity plate two rotates, so that the rotation angle of the activity plate two is not in place. Under the action of the rotating shafts on both sides of the activity plate two, lever motion can be realized to make the pull rod one and the pull rod two move in opposite directions.

[0026] Preferably, the L-shaped frame is provided with a movable plate one away from one side of the movable plate two, a pull rod one is provided between the lower end of the movable plate one and the upper end of the movable plate two, and the L-shaped frame is located at the upper part of the plastic film.

[0027] By adopting the above technical scheme, the pull rod one and the pull rod two both realize the force transmission effect.

[0028] Preferably, the positioning assembly comprises a U-shaped frame fixed on both sides of the equipment frame, a plurality of limiting assemblies for cutting and positioning the plastic film are arranged on the surface of the U-shaped frame, the limiting assembly comprises a U-shaped frame inserted into the U-shaped frame, the upper end of the U-shaped frame is fixed to the U-shaped frame through a fastening screw, a connecting frame is fixed on one side of the glue injection mechanism, a connecting shaft is fixedly penetrated at the lower end of the lower side of the connecting frame, a baffle matched with the movable plate one is fixedly penetrated in the middle part of the connecting shaft, and torsional springs are sleeved on both ends of the connecting shaft and fixed to the surface of the connecting frame and the baffle.

[0029] By adopting the above technical scheme, the lower end of the baffle is provided with a circular arc chamfer, the torsional springs can make the baffle return to the original vertical state while improving the resistance, and the fastening nut can fix the U-shaped frame at any position of the U-shaped frame.

[0030] In summary, the present application has at least one of the following beneficial technical effects:

[0031] 1. The use of the modified starch-based waterproof agent can effectively improve the waterproof effect of the paper bag body, the movable moving paper board can fill the pre-folding angle between the paper bag bodies and the gap on the surface of the paper bag body, and the glue discharged from the longitudinal cut of the folding angle one and the longitudinal cut of the folding angle two can further fill the gap and achieve the effect of sticking and fixing, thereby improving the sealing performance of the paper bag body and preventing water from entering the paper bag body and the internal articles from being oxidized;

[0032] 2. The longitudinal adjustment structure adjusts the position of the glue injection mechanism to fill the glue for paper bag bodies with different thicknesses, and the glue injection mechanism cooperates with the positioning assembly to make the cutter quickly cut the position to be cut on the surface of the plastic film, thereby improving the cutting effect of the plastic film and increasing the working effect to facilitate the production of the paper bag body. BRIEF DESCRIPTION OF DRAWINGS

[0033] FIG. 1 is a schematic diagram of the paper bag body of the present application;

[0034] FIG. 2 is a schematic diagram of the paper bag side wall of the present application;

[0035] FIG. 3 is a schematic diagram of the paper bag production equipment of the second embodiment of the present application;

[0036] FIG. 4 is a schematic diagram of the glue groove and the glue injection pipe of the present application;

[0037] Fig. 5 is a schematic view of the position-limiting assembly of the present application in contact with the movable plate;

[0038] Fig. 6 is a schematic view of the structure of the position-limiting assembly of the present application;

[0039] Fig. 7 is a schematic view of the connection between the glue injection mechanism, the linear driving mechanism and the longitudinal adjustment structure of the present application;

[0040] Fig. 8 is a schematic view of the connection between the pull rod, the L-shaped frame and the movable plate of the present application;

[0041] Fig. 9 is a schematic view of the cross-section of the glue injection pipe of the present application;

[0042] Fig. 10 is a schematic view of the connection between the glue injection pipe and the cutter of the present application;

[0043] Fig. 11 is a schematic view of the connection between the cylinder and the helical groove in the cross-section of the glue injection pipe of the present application.

[0044] Reference signs: 100, paper bag body; 101, modified starch-based waterproof agent; 102, plastic film; 103, ant line; 104, corner one longitudinal cut; 105, corner two longitudinal cut; 106, longitudinal cut three; 107, glue groove; 108, kraft paper; 109, PP synthetic paper core; 110, moving paperboard; 111, Z-shaped plastic film; 112, protruding block;

[0045] 200, equipment rack; 300, driving roller;

[0046] 400, longitudinal adjustment structure; 401, moving plate; 402, fixed frame; 403, screw rod;

[0047] 500, glue injection mechanism; 501, connecting plate; 502, linear driving mechanism; 503, intermediate frame; 504, glue injection pipe; 505, L-shaped frame; 506, movable plate one; 507, pull rod one;

[0048] 508, movable plate two; 509, rectangular port; 510, equipment cavity; 511, partition plate; 512, glue injection cavity; 513, pull rod two; 514, blade edge; 515, fixed plate; 516, cylinder; 517, helical groove; 518, connecting sphere; 519, cutter;

[0049] 600, positioning assembly;

[0050] 601, position-limiting assembly; 6011, fastening screw; 6012, connecting frame; 6013, baffle; 6014, connecting shaft; 6015, U-shaped frame; 6016, torsional spring; 700, glue feeding pipe. DETAILED DESCRIPTION

[0051] The application will be further described in detail below in combination with Figs. 1-11.

[0052] Embodiment one

[0053] The application discloses a degradable plastic-free paper bag and a production equipment thereof.

[0054] Referring to Figs. 1 and 2, the degradable plastic-free paper bag comprises a paper bag body 100, the paper bag body 100 comprising a modified starch-based waterproof agent 101, kraft paper 108 and a PP synthetic paper core 109, two symmetrical openings are formed in the middle of the paper bag body 100, the two sides of the openings are fixedly connected with one side of a Z-shaped plastic film 111, the other side of the Z-shaped plastic film 111 is fixedly connected with one side of a movable paper plate 110, a protruding block 112 is fixedly arranged on the movable paper plate 110 at a position opposite to a glue groove 107, the protruding block 112 is in the shape of a long strip, it is to be noted that the Z-shaped plastic film 111 is actually fixedly connected with the surface of the modified starch-based waterproof agent 101, the softness of the Z-shaped plastic film 111 can ensure the sealing of the paper bag while the movable paper plate 110 is moving, the material composition and structure of the movable paper plate 110 are the same as those of the paper bag body 100; a glue groove 107 is formed between the lower end of one side of the movable paper plate 110 and the surface of the paper bag body 100. The two glue grooves 107 are in communication with each other and have the same size, a plastic film 102 is arranged on the opening surface of the glue groove 107, and the two ends of the plastic film 102 are fixedly connected with the paper bag body 100, the plastic film 102 is preferably degradable polylactic acid PLA, polybutylene succinate PBS or the like, a longitudinal cut 106 is formed on the Z-shaped plastic film 111 at a position corresponding to the side of the Z-shaped plastic film 111, and the length of the longitudinal cut 106 is the same as that of the Z-shaped plastic film 111.

[0055] When the user seals the paper bag, the protruding block 112 is pressed by the hand, the protruding block 112 drives the movable paper plate 110 to move and extrude the glue in the modified starch-based waterproof agent 101, and the Z-shaped plastic film 111 is deformed, so that the two movable paper plates 110 are more tightly attached, it is to be noted that the length of the movable paper plate 110 is the same as the distance between the two paper bag bodies 100, so that the movable paper plate 110 is perfectly fitted, and the kraft paper 108, the PP synthetic paper core 109 and the modified starch-based waterproof agent 101 can make the paper bag have better toughness and waterproof effect.

[0056] Referring to FIG. 1, FIG. 2, the plastic film 102 is provided with a corner two longitudinal cut 105 at the inner corner of the paper bag body 100, and the plastic film 102 is provided with a corner one longitudinal cut 104 at the outer corner of the paper bag body 100, so as to avoid the plastic film 102 being pulled and pressed when being bent, and causing the glue in the glue groove 107 to be pressed. The PP synthetic paper core 109 is fixed on one side of the kraft paper 108, and the two kraft papers 108 are fixed on one side of the modified starch-based waterproof agent 101. The modified starch-based waterproof agent 101 has a waterproof effect, thereby increasing the waterproof property of the paper bag. The Z-shaped plastic film 111 is provided as a whole in a "U" shape. The middle part of the surface of the plastic film 102 is provided with an ant line 103 corresponding to the middle part of the glue groove 107. The ant line 103 connects the outside with the inside of the glue groove 107.

[0057] When the glue groove 107 is pressed, the glue in the glue groove 107 will leak out of the ant line 103. At the same time, the ant line 103 arranged will not cause the glue to leak out of the glue groove 107 during daily storage and transportation, thereby achieving the effect of plugging. When the outer corner and the inner corner of the paper bag body 100 are folded, the glue in the glue groove 107 will also be discharged from the corner two longitudinal cut 105 and the corner one longitudinal cut 104, thereby increasing the amount of glue and filling the gap between the outer corner of the paper bag body 100 and the movable paper board 110, and then making the glue solidify to achieve the effect of sealing. It should be noted that the glue needs to be set as a long-term adhesive that will not be oxidized and also needs to maintain a certain liquid state, so the formula of the glue needs to be improved. Since it is not the main technology, the patent will not be described in detail.

[0058] At the same time, the outside of the paper bag body 100 is provided with a height limit line as shown in FIG. 1, so that the files in the paper bag body 100 cannot be higher than the height limit line, otherwise the files will be in contact with the glue, causing the files to be damaged.

[0059] The implementation principle of the degradable plastic-free paper bag is that the glue is discharged from the glue groove 107 by pressing the protruding block 112 and the position corresponding to the glue groove 107 on the outside of the paper bag body 100. At this time, the paper bag body 100 is in a folded state, and the movable paper board 110 is located between the two outer corners of the paper bag body 100, and the glue is discharged from the corner one longitudinal cut 104 to fill the gap between the movable paper board 110 and the outer corner of the paper bag body 100, thereby improving the sealing property of the paper bag and achieving full sealing, effectively increasing the storage time of the articles and avoiding the articles being quickly oxidized by being in contact with air for a long time.

[0060] Embodiment two

[0061] Please refer to Figure 3, a kind of degradable paper bag without plastic production equipment for producing the above degradable paper bag without plastic, including the equipment frame 200 of being fixedly arranged at the upper end of ground, the equipment frame 200 upper end is rotationally arranged with several drive rollers 300, equipment frame 200 and drive roller 300 are all arranged as existing product, each drive roller 300 is synchronously rotated to drive paper bag body 100 to realize movement, several drive rollers 300 upper end is placed with paperboard, and paperboard can be folded into paper bag body 100 in subsequent work.

[0062] The device is also provided with a visual camera, which can shoot the position of the glue groove 107 of the paper bag body 100, so that the glue groove 107 moves to the opposite position of the glue injection pipe 504, and the plurality of drive rollers 300 stop working, so as to facilitate the insertion of the glue injection pipe 504 into the glue groove 107.

[0063] Please refer to Figure 3-6, the middle part of equipment frame 200 is provided with two symmetrical longitudinal adjustment structures 400 on both sides, longitudinal adjustment structure 400 includes fixed frame 402 fixedly arranged on the outer surface of equipment frame 200 on both sides, two fixed frames 402 upper end middle part is provided with sliding groove, two fixed frames 402 middle part sliding groove is slidably provided with moving plate 401, the middle part of one end of each moving plate 401 is screwedly provided with screw rod 403, the lower end of screw rod 403 is rotationally arranged with the inner wall of moving plate 401 and is limited, at the same time, screw rod 403 upper end and moving plate 401 between screw are provided with fastening nut.

[0064] The user can adjust the longitudinal adjustment structure 400 according to the thickness of the paper bag body 100, so that the glue injection pipe 504 can be smoothly inserted into the glue groove 107, when adjusting the height, the user rotates the screw rod 403 under the action of screw to drive the moving plate 401 to realize longitudinal height adjustment, and then drives the middle frame 503 to move through the linear drive mechanism 502 to drive the glue injection pipe 504 to realize height adjustment, when one end of the glue injection pipe 504 corresponds to one end of the glue groove 107, then the user fixes the screw rod 403 by rotating the fastening nut with wrench, to avoid the rotation of screw rod 403 affecting the height of glue injection pipe 504.

[0065] Please refer to FIG. 6-11, between the two longitudinal adjustment structure 400 is provided with a glue groove 107 for the surface of the paper bag body 100 injection glue injection mechanism 500, injection mechanism 500 includes fixed between the two moving plate 401 connecting plate 501, connecting plate 501 is located on one side of the paper bag body 100 and the fixed end of the linear drive mechanism 502 through the bolt fixed, the movable end of the linear drive mechanism 502 and the intermediate frame 503 one end through the bolt fixed, and the linear drive mechanism 502 is set to horizontal state, one end of the intermediate frame 503 is fixedly provided with injection tube 504, injection tube 504 is movably inserted in the glue groove 107 and realize injection glue in turn to glue groove 107 between the plastic film 102 and the glue injection tube 504 glue end rotationally provided with cutter 519, cutter 519 upper end is provided with blade 514, cutter 519 surface blade 514 to the plastic film 102 realize cutting, the lower end of the cutter 519 extends to the lower end of the partition plate 511 and a part of the horizontal extension space in the glue cavity 512 in turn to the glue scraping effect.

[0066] When one end of the injection tube 504 and one end of the glue groove 107 corresponding, microcomputer control linear drive mechanism 502 energized work, the movable end of the linear drive mechanism 502 drive intermediate frame 503 in turn to drive the injection tube 504 inserted into the glue groove 107, make the end of the injection tube 504 moves to one end of the glue groove 107, it should be noted that the surface of the cutter 519 and the surface of the injection tube 504 are flush in turn to avoid interference with the inner wall of the glue groove 107.

[0067] Please refer to FIG. 6-FIG. 11, the upper middle part of the inner cavity of the glue injection pipe 504 is fixed on both sides of the partition plate 511, the partition plate 511 divides the inner cavity of the glue injection pipe 504 into the device cavity 510 in the upper part and the glue injection cavity 512 in the lower part, respectively, the upper end of the partition plate 511 is fixedly provided with a fixed plate 515 in the middle of one side of the cutter 519, one side of the fixed plate 515 movably penetrates a cylinder 516, one end of the central axis of the cylinder 516 is fixedly connected with one side of the cutter 519, it should be noted that one end of the central axis of the cylinder 516 is located at one third of the surface of the cutter 519, so that the cutter 519 rotates eccentrically and cuts the plastic film 102, and the central axis of the cylinder 516 is rotatably provided on the fixed plate 515 through a bearing, the surface of the cylinder 516 is provided with a spiral groove 517, the spiral groove 517 is provided with a large angle spiral, so that the connecting sphere 518 can smoothly drive the cylinder 516 to rotate, the other side of the fixed plate 515 is provided with a circular hole, the circular hole movably penetrates a pull rod two 513, one end of the pull rod two 513 is fixedly provided with a connecting sphere 518 which slides in the spiral groove 517, the connecting sphere 518 is located on one side of the cylinder 516, the upper end of the side of the glue injection pipe 504 away from the cutter 519 is provided with a rectangular port 509, the rectangular port 509 is communicated with the device cavity 510, the length of the rectangular port 509 is much larger than the rotating radius of the movable plate two 508, both sides of the upper end of the rectangular port 509 are provided with an L-shaped frame 505, one end of the L-shaped frame 505 is fixed on the surface of the glue injection pipe 504, the middle part of the L-shaped frame 505 is rotatably provided with a movable plate two 508, one end of the movable plate two 508 is rotatably provided with a pull rod two 513 through a rotating shaft, the lower end of the movable plate two 508 penetrates the rectangular port 509, and the rotating shaft part of the movable plate two 508 and the pull rod two 513 are located in the device cavity 510, the glue injection pipe 504 penetrates and is fixedly provided with a glue inlet pipe 700 on one side of the movable plate two 508, the glue inlet pipe 700 is communicated with the glue injection cavity 512 to realize glue conveying, the end of the side of the L-shaped frame 505 away from the movable plate two 508 is rotatably provided with a movable plate one 506, the pull rod one 507 is rotatably provided between the lower end of the movable plate one 506 and the upper end of the movable plate two 508 through a rotating shaft, the L-shaped frame 505 is located on the upper part of the plastic film 102.

[0068] The upper end of the movable plate one 506 is stressed to rotate around the rotating shaft of the movable plate one 506, and then the movable plate one 506 drives the pull rod one 507 to move, the pull rod one 507 drives the movable plate two 508 to rotate on the L-shaped frame 505, and then the pull rod two 513 is driven to move towards the position of the cutter 519 under the action of the principle of the lever, at this time, the fixed plate 515 supports the pull rod two 513 and the cylinder 516, then the pull rod two 513 drives the connecting sphere 518 to move, and the connecting sphere 518 slides in the spiral groove 517 of the cylinder 516, and the cylinder 516 rotates under the limitation of the spiral groove 517, it should be noted that when the connecting sphere 518 moves from one end of the cylinder 516 to the other end, the cutter 519 rotates under the drive of the central axis of the cylinder 516, the blade 514 arranged at the upper end of the cutter 519 can cut the plastic film 102, so that the paper bag body 100 can realize the pre-folding angle. When the cutter 519 rotates, the cutter 519 and the fixed plate 515 are eccentrically arranged, so that one end of the cutter 519 does not interfere with the partition plate 511 and affect the rotation of the cutter 519.

[0069] Please refer to FIG. 10-11, the two sides of the equipment frame 200 are located on one side of the glue injection mechanism 500, and the positioning assembly 600 is arranged on the other side of the glue injection mechanism 500 to cooperate with the working of the glue injection mechanism 500, the positioning assembly 600 includes a U-shaped frame fixed on the two sides of the equipment frame 200 near the side of the glue injection mechanism 500, and a plurality of limiting assemblies 601 for cutting and positioning the plastic film 102 are arranged on the surface of the U-shaped frame, the plurality of limiting assemblies 601 need to be arranged according to the pre-folding angle position of the paper bag body 100, so as to realize the cutting of the plastic film 102, the limiting assembly 601 includes a U-shaped frame 6015 movably inserted into the U-shaped frame, a fastening screw 6011 is arranged on the upper end of the U-shaped frame 6015, the lower end of the fastening screw 6011 abuts against the upper part of the U-shaped frame and realizes the fixation of the U-shaped frame 6015 and the U-shaped frame, the lower part of the U-shaped frame 6015 is integrally formed with a connecting frame 6012 on one side of the glue injection mechanism 500, a circular connecting shaft 6014 is fixedly penetrated through the lower end of the connecting frame 6012, a baffle 6013 is fixedly penetrated through the middle part of the connecting shaft 6014, the baffle 6013 is matched with the movable plate one 506, torsional springs 6016 are sleeved on both ends of the connecting shaft 6014, and the torsional springs 6016 are respectively fixedly connected to the connecting frame 6012 and the surface of the baffle 6013.

[0070] The user determines the cutting position of the first corner longitudinal cut 104, the second corner longitudinal cut 105 and the third longitudinal cut 106 according to the shape of the paper bag body 100, then respectively corresponds the positions of the three limiting assemblies 601 to the positions of the first corner longitudinal cut 104, the second corner longitudinal cut 105 and the third longitudinal cut 106 respectively, then fixes the U-shaped frame 6015 and the U-shaped frame by the fastening screw 6011, and the external glue injection equipment injects the prepared glue into the glue injection cavity 512 through the glue injection pipe 700, the glue accumulates in the glue injection cavity 512 and is discharged from the port of the glue injection pipe 504 to be transported to the glue groove 107 and the plastic film 102, when the movable plate one 506 abuts against the lower end of the baffle 6013, the movable plate one 506 rotates under the limitation of the baffle 6013 due to the continuous movement of the glue injection pipe 504 and the continuous movement of the movable plate one 506, at the same time, the baffle 6013 also rotates around the connecting shaft 6014 under the pushing of the movable plate one 506 to twist the torsional spring 6016, the baffle 6013 continuously pushes the movable plate one 506 with the rotation of the baffle 6013, so that the cutter 519 can continuously rotate, and the cutter 519 can rotate to 80-90 degrees, so the torsional resistance of the torsional spring 6016 needs to be adjusted, when the baffle 6013 is separated from the movable plate one 506, one end of the cutter 519 which is heavier returns to the original position, and the baffle 6013 returns to the original vertical state under the reaction force of the torsional spring 6016.

[0071] The working principle and process of the embodiment are as follows:

[0072] The user needs to adjust the longitudinal adjustment structure 400 according to the thickness of the paper bag body 100, when the camera of the external device detects that the paper bag body 100 moves to the appropriate position, the driving roller 300 stops working, the microcomputer controls the linear drive mechanism 502 to work to slowly insert the glue injection pipe 504 into the glue groove 107 and one end of the paper bag body 100, then the glue pump of the external device works to transport the glue into the glue injection cavity 512 and then into the glue groove 107 through the glue injection pipe 700, at this time, the connecting plate 501 slowly pulls out the glue injection pipe 504 from the inside of the glue groove 107.

[0073] When the movable plate one 506 contacts and rotates the baffle 6013, the movable plate one 506 rotates to drive the pull rod one 507 to move to drive the movable plate two 508 to rotate, at the same time, the pull rod two 513 moves in the direction opposite to the moving direction of the pull rod one 507 to drive the connecting ball 518 to rotate to drive the cylinder 516 to rotate, the cylinder 516 drives the cutter 519 to rotate to cut the plastic film 102 through the blade 514.

[0074] The limiting assembly 601 at different positions drives the cutter 519 to rotate to cut the positions of the first angle longitudinal cut 104, the second angle longitudinal cut 105 and the third longitudinal cut 106 of the paper bag body 100. Through the above setting, the structural design and operation can be performed when the paper bag body 100 is produced, so that the paper bag body 100 can realize better sealing effect when storing articles to avoid air leakage of the paper bag body 100. At the same time, the device is more convenient to operate, and the one-time forming can effectively improve the working efficiency of the device when the paper bag body 100 is manufactured.

[0075] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A degradable, plastic-free paper bag, characterized by: Including paper bag body (100), the paper bag body (100) includes modified starch-based waterproof agent (101), kraft paper (108) and PP synthetic paper core (109), the both sides opening of the middle part of paper bag body (100) are all fixed with mobile paperboard (110) through Z-shaped plastic film (111), the material of mobile paperboard (110) is same with paper bag body (100); The lower end of mobile paperboard (110) one side and the surface between paper bag body (100) are all set with mutually communicating glue groove (107), the surface of glue groove (107) is all equipped with the plastic film (102) of the fixed connection of paper bag body (100) surface, the plastic film (102) is located Z-shaped plastic film (111) one side and is set with longitudinal cutout three (106), the plastic film (102) is respectively set with corner two longitudinal cutout (105) and corner one longitudinal cutout (104) at the corner of paper bag body (100).

2. The degradable non-plastic paper bag according to claim 1, characterized in that: The both sides of PP synthetic paper core (109) are fixed with kraft paper (108), the surface one side of two kraft paper (108) is fixed with modified starch-based waterproof agent (101), the convex block (112) is fixed in the opposite position of glue groove (107) on the outer surface of mobile paperboard (110), the surface of plastic film (102) is all equipped with ant line (103) in the middle part.

3. A production apparatus of a degradable plastic-free paper bag, characterized by: A degradable plastic-free paper bag described in the above claims 1-2 is produced, including a device frame (200) arranged on the upper end of the ground, a plurality of drive rollers (300) are arranged on the upper end of the device frame (200), a plurality of paperboards are arranged on the upper end of the drive rollers (300), and the paperboards are folded into paper bag bodies (100); The both sides of the device frame (200) are provided with longitudinal adjustment structures (400), and a glue injection mechanism (500) for injecting glue is arranged between the two longitudinal adjustment structures (400), and a positioning assembly (600) cooperating with the glue injection mechanism (500) is arranged on one side of the glue injection mechanism (500) on the both sides of the device frame (200).

4. The production device of degradable non-plastic paper bags according to claim 3, characterized in that: The longitudinal adjustment structure (400) includes a fixed frame (402) fixed on the both sides of the outer surface of the device frame (200), a moving plate (401) is slidably arranged in the middle part of the two fixed frames (402), a screw rod (403) is threadedly arranged at one end of each moving plate (401) and rotatably arranged with the moving plate (401), and the lower end of the screw rod (403) is limited with the moving plate (401).

5. The apparatus for producing degradable non-plastic paper bags according to claim 4, characterized in that: The glue injection mechanism (500) comprises a connecting plate (501) fixed between two moving plates (401), a linear drive mechanism (502) fixed on one side of the connecting plate (501), an intermediate frame (503) fixed on the movable end of the linear drive mechanism (502), a glue injection pipe (504) fixed on one end of the intermediate frame (503) and inserted into the glue groove (107) to realize glue injection, and a cutter (519) rotatably arranged on the glue injection pipe (504) to cut the plastic film (102).

6. The apparatus for producing degradable non-plastic paper bags according to claim 4, wherein: A partition (511) is fixed in the middle and upper part of the glue injection pipe (504), which divides the inner cavity of the glue injection pipe (504) into an equipment cavity (510) and a glue injection cavity (512).

7. The apparatus for producing degradable non-plastic paper bags according to claim 6, characterized in that: A fixed plate (515) is fixed on one side of the partition (511) above the cutter (519), a cylinder (516) is movably penetrated on one side of the fixed plate (515) and fixedly connected with the cutter (519), a helical groove (517) is formed on the surface of the cylinder (516), a pull rod two (513) is movably penetrated on the other side of the fixed plate (515), and a connecting ball (518) is fixed on one end of the pull rod two (513) and faces one side of the cylinder (516) to slide in the helical groove (517).

8. The apparatus for producing degradable non-plastic paper bags according to claim 7, characterized in that: A rectangular port (509) is formed on the upper end of the other side of the glue injection pipe (504) away from the cutter (519) and communicates with the equipment cavity (510), L-shaped frames (505) are fixed on the surface of the glue injection pipe (504) on both sides of the upper end of the rectangular port (509), an activity plate two (508) is rotatably arranged on one end of the pull rod two (513) and rotatably arranged on the middle part of the L-shaped frame (505), the lower end of the activity plate two (508) penetrates through the rectangular port (509) and is located in the equipment cavity (510), and a glue injection pipe (700) is fixed on one side of the glue injection pipe (504) and communicates with the glue injection cavity (512).

9. The apparatus for producing a degradable non-plastic paper bag according to claim 8, wherein: An activity plate one (506) is rotatably arranged on the other side of the L-shaped frame (505) away from the activity plate two (508), a pull rod one (507) is rotatably arranged between the lower end of the activity plate one (506) and the upper end of the activity plate two (508), and the L-shaped frame (505) is located on the upper part of the plastic film (102).

10. The apparatus for producing degradable non-plastic paper bags according to claim 3, wherein: The positioning assembly (600) comprises a U-shaped frame fixed on both sides of the equipment rack (200), and a plurality of limiting assemblies (601) for cutting and positioning the plastic film (102) are arranged on the surface of the U-shaped frame, the limiting assembly (601) comprises a U-shaped frame (6015) inserted into the U-shaped frame, the upper end of the U-shaped frame (6015) is fixed with the U-shaped frame through a fastening screw (6011), a connecting frame (6012) is fixed on one side of the U-shaped frame (6015) of the glue injection mechanism (500), a connecting shaft (6014) is fixedly penetrated at the lower end of the lower side of the connecting frame (6012), a baffle (6013) matched with the movable plate (506) is fixedly penetrated in the middle of the connecting shaft (6014), and torsional springs (6016) are sleeved on both ends of the connecting shaft (6014) and fixedly connected with the surface of the connecting frame (6012) and the baffle (6013).

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