Packaging pouch and production device therefor

Abstract

A packaging bag and a production device thereof, comprising a workbench, an outer top wall of the workbench is fixedly connected to a support frame, an outer top wall of the support frame is installed with a motor, one end portion of an output shaft of the motor is connected to a rotating roller, the support frame is fixedly connected to a fixed plate, the fixed plate is provided with circular holes, inner walls of the circular holes are slidably connected to first support rods, outer top walls of the first support rods are fixedly connected to a pressing plate, outer bottom walls of the first support rods are installed with cutting knives, outer walls at both sides of the rotating roller are installed with cams, and outer walls at both sides of bottom end portions of the fixed plate are fixedly connected to side frames.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging bags, in particular to a packaging bag and a production device thereof.Background Technology

[0002] Packaging bags refer to bags used for packaging various items, facilitating the transportation of goods during production and circulation, and making storage easier. Packaging bags are widely used in daily life and industrial production. Paper food packaging bags are designed for preserving and storing food. During the production process of paper food packaging bags, cutting devices are required to cut the bag bodies.

[0003] After searching, it is found that a Chinese patent with publication number CN218701703U discloses a paper packaging bag cutting production device, wherein by arranging a mounting mechanism, a connection seat serves to connect a rotating rod and a connecting plate, paper samples to be cut are passed between a workbench and a drive roller, and a motor then rotates the rotating rod, causing a drive roller to move the rubber strip, which drives paper samples to the right for cutting operations, which is convenient for operation; by setting up a cutting mechanism, a mounting plate serves to install a blade and a second spring, pressing blocks are arranged to secure the paper samples in place, an electric push rod pushes the cutting mechanism downward, compressing the second spring as the pressing blocks presses down on the paper samples, and the pressing blocks on both sides hold the paper samples in position while the blade cuts through them, and cut paper samples then fall into a collection box through a trapezoidal slot, which not only prevents the paper samples from shifting during cutting, making it easier to perform the cut and improving cutting efficiency, but also facilitates the collection of the cut paper samples, enhancing usability.

[0004] Based on the above search summarising the prior art, it has been found that conventional cutting devices for packaging bags are prone to impurities accumulation on outer walls of the cutting knives during the cutting process. These impurities include tiny fragments of materials, coatings, or adhesives, etc. After a long period of cutting, the cutting knives are susceptable to adherence of impurities and contamination, which not only affects the precision and efficiency of cutting but may also require frequent cleaning or replacement of tools. Furthermore, this can lead to uneven cutting edges, burrs, or adhesion, negatively impacting the appearance and performance of the packaging bags, thereby reducing the production quality of packaging bags.Summary of the present invention

[0005] The purpose of the present invention is to provide a packaging bag and a production device thereof to solve the problems mentioned in the above background technology.

[0006] The technical solutions of the present invention are as follows: a packaging bag comprises a bag body, wherein bottom portions of the bag body comprise a V-shaped arrangement.

[0007] A packaging bag production device, comprises a workbench, wherein an outer top wall of the workbench is fixedly connected to a support frame, an outer top wall of the support frame is installed with a motor, one end portion of an output shaft of the motor is connected to a rotating roller through a coupling, an inner bottom wall of the support frame is fixedly connected to a fixed plate, an outer top wall of the fixed plate is provided with circular holes, inner walls of the circular holes are slidably connected to first support rods, outer top walls of the first support rods are fixedly connected to a pressing plate, outer bottom walls of the first support rods are installed with cutting knives, outer walls at both sides of the rotating roller are installed with cams, and outer walls at both sides of bottom end portions of the fixed plate are fixedly connected to side frames, outer walls at sides of the side frames are provided with sliding grooves, inner walls of the side grooves are slidably connected to the sliding frames, inner bottom wall of the sliding frames are fixedly connected to magnetic plates, inner bottom walls of the side frames are slidably connected to second support rods, outer walls at sides of the second support rods are fixedly connected to the sliding plates, outer walls at another sides of the second support rods are fixedly connected to cleaning plates, outer top walls at sides of the cleaning plates are fixedly connected to magnetic blocks, outer top walls at another sides of the cleaning plates are fixedly connected to cleaning grids, inner bottom walls at both sides of the support frame are fixedly connected to fixing rods, and outer walls of the fixing rods are fixedly connected to triangular plates.

[0008] Preferably, the triangular plates are arranged in linear arrays, the cleaning plates are arranged in right-angled trapezoidal shapes, discharge grooves are provided on outer top walls at sides of the cleaning plates, the discharge grooves are adapted to sizes of the triangular plates, and outer bottom walls of the side frames are fixedly connected with collection boxes, and the collection boxes are located directly below the discharge grooves.

[0009] Preferably, the cams are all in abutted connection with an outer top wall of the pressing plate, outer walls of the first support rods are sleeved with first springs, and end portions of the first springs are respectively fixedly connected to the pressing plate and the fixed plate, outer walls of the second support rods are sleeved with second springs, and end portions of the second springs are respectively fixedly connected to the side frames and the cleaning plates, the magnetic plates are adapted to sizes of the magnetic blocks, bottom portions of the cutting knives comprise conical arrangements, and the cleaning grids are inclined, and the cutting knives are adapted to sizes of the cleaning plates and the cleaning grids.

[0010] Preferably, inner bottom walls at both sides of the support frame are rotationally provided with rotating rods, and outer walls of the rotating rods are fixedly connected to gears, outer bottom walls of the sliding plates are fixedly connected to racks, and the gears are meshed with the racks, outer walls at both sides of the rotating rods are fixedly connected to connecting rods, and outer top walls of the connecting rods are fixedly connected to first arc-shaped plates.

[0011] Preferably, at four corners of inner bottom wall of the support frame are provided rectangular grooves, inner walls of the rectangular grooves are slidably connected to sliding blocks, and inner walls of the rectangular grooves are fixedly connected to third support rods, the sliding blocks are slidably connected to outer walls of the third support rods, the outer walls of the third support rods are sleeved with third springs, end portions of the third springs are respectively fixedly connected to the sliding blocks and the support frame, and outer walls of the sliding blocks are fixedly connected to second arc-shaped plates.

[0012] Preferably, outer bottom walls at sides of the second arc-shaped plates are fixedly connected pressing pads, outer walls at another sides of the second arc-shaped plates are provided with mounting grooves, inner walls of the mounting grooves are rotationally provided with rolling shafts, outer walls at sides of the first arc-shaped plates are provided with pushing grooves, inner walls of the pushing grooves are bonded with rubber pads, and the pushing grooves are adapted to sizes of the rolling shafts.

[0013] Preferably, the pressing pads are all highly adapted to height of the rolling shafts, the first arc-shaped plates are all in contact with inner walls of the second arc-shaped plates, the sliding frames are located above the collection boxes, the sliding frames are located obliquely above the cutting knives, and outer bottom walls at both sides of the fixed plate are provided with storage grooves, and the storage grooves are all adapted to sizes of the sliding frames.

[0014] Preferably, a transmission wheel group is installed on an outer side wall of the support frame and the workbench; a conveying groove is opened on outer top wall at one side of the workbench; a main transmission shaft is rotationally arranged on an inner side wall of the conveying groove; a driven shaft is rotationally arranged on another inner side wall of the conveying groove; a transmission belt is wound around outer walls of the main transmission shaft and the driven shaft; the main transmission shaft is fixedly connected to an inner bottom wall of the transmission wheel group; and the rotating roller is fixedly connected to a top inner wall of the transmission wheel group.Beneficial Effects

[0015] The present invention provides an improved packaging bag and a production device thereof, and gets following improvements and advantages compared to the prior art: I. The present invention is equipped with a support frame, cams, cutting knives, cleaning plates, cleaning grids, and sliding frames, so that each time the cams rotate one circle, the cutting knives moves up and down to complete the cutting process of packaging bags; when the cutting knives descend, both sides of the cleaning plates are pressed, so as to cause the cleaning plates and the cleaning grids to slide tightly against the cutting knives to scrape away impurities attached from the previous cut; and the sliding frames descend with the cutting knives, and magnetic plates at the bottom hold the cutting knives in place to ensure that the cleaning plates do not immediately return and contact the cutting knives when the cutting knives rise, which avoids the phenomenon of impurities being scraped off and falling onto packaging bags; only when the cutting knives continue to rise and lift the sliding frames can the magnetic plates of the sliding frames separate from the magnets on the cleaning plates, allowing the cleaning plates to reset and touch the bottom of the cutting knives; and when the cutting knives descend again to cut packaging bags, impurities are scraped off and cleaned again, ensuring cutting accuracy and efficiency while avoiding frequent cleaning or replacement of tools, which may cause uneven edges, burrs, or adhesion affecting the appearance and functionality of packaging bags, thereby enhancing the production quality. II. The present invention is provided with cleaning plates, cleaning grids, fixed rods, and triangular plates, so that the cleaning grids on both sides of the cleaning plates form a V-shape when close together, limiting the bottom of the cutting knives and ensuring the cutting knives accurately insert between the two cleaning plates upon descent, preventing blade collision; fixed triangular plates allow impurities on the cleaning plates to move smoothly to opposite sides of the triangular plates; when the cleaning plates reset, impurities are blocked by vertical edges of the triangular plates, allowing the impurities to fall into discharge grooves and be collected in collection boxes for unified processing, thus preventing excessive accumulation of impurities that could affect the cutting of packaging bags. III. The present invention is installed with gears, racks, first arc-shaped plates and second arc-shaped plates, pressing pads, and rolling shafts, so that through the linkage of the sliding plates, the gears, and the racks, every time the cutting knives rise and fall to cut packaging bags, the first arc-shaped plates and second arc-shaped plates apply pressure; as the arc-shaped plates descend, packaging bags are pressed against via the pressing pads and rolling shafts, keeping packaging bags taut for easier cutting; and pushing grooves of the first arc-shaped plates contact the rolling shafts, driving the rolling shafts to rotate, further applying force to packaging bags and ensuring smooth cutting, thereby improving the cutting and production efficiency of the packaging bags. IV. The present invention is provided with a rotating roller, a transmission wheel group, a main transmission shaft, and a driven shaft, so that through linkage, every time the rotating rollers rotate one circle, the main transmission shaft and the driven shaft to move the transmission belt a certain distance, facilitating the discharge process after cutting packaging bags and further enhancing the production quality of packaging bags. V. The present invention utilizes a V-shaped bottom design for the packaging bag body, breaking through the conventional triangular positions that result in paper breakage in paper bags; after the bag is formed, there are no crease lines on either side, enhancing the aesthetic appeal of bags and increasing load-bearing capacity thereof, thereby avoiding the common issue of adhesive failure at the bottom of conventional bags. Brief Description of the Drawings

[0016] The present invention will be further explained below in conjunction with accompanying drawings and embodiments. Figure 1 is a schematic diagram of an overall structure of the present invention. Figure 2 is a schematic diagram of a cross-sectional structure of a support frame connection structure of the present invention. Figure 3 is a schematic diagram of a cross-sectional structure of a cutting knife of the present invention in a cutting state. Figure 4 is a schematic diagram of a cross-sectional structure of a side frame connection structure of the present invention. Figure 5 is a schematic diagram of a cross-sectional structure of a cleaning plate connection structure of the present invention. Figure 6 is a schematic diagram of a triangular plate connection structure of the present invention. Figure 7 is a schematic diagram of the connection structure of an arc plate 2 before being pressed. Figure 8 is a schematic diagram of the connection structure of the arc plate 2 after being pressed. Figure 9 is a schematic diagram of a main transmission shaft connection structure of the present invention. Figure 10 is a schematic diagram of a bag body structure of a packaging bag of the present invention.

[0017] The markups in the drawings are indicated as follows: 1-workbench; 2-support frame; 3-side frames; 4-first support rods; 5-motor; 6-cam; 7-rotating roller; 8-pressing plate; 9-fixed plate; 10-transmission wheel group; 11-transmission belt; 12-first spring; 13-first arc-shaped plate; 14-cutting knives; 15-cleaning plate; 16-collection box; 17-sliding plate; 18-slide frame; 19-magnetic plate; 20-rack; 21-second support rod; 22-second spring; 23-magnetic block; 24-cleaning grid; 25-triangular plate; 26-discharge groove; 27-fixing rod; 28-rotating rod; 29-connecting rod; 30-gear; 31-pushing groove; 32-second arc-shaped plate; 33-pressing pad; 34-sliding block; 35-third support rod; 36-third spring; 37-rolling shaft; 38-main transmission shaft; and 39- driven shaft.Specific Embodiments of the Present invention

[0018] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention provides a packaging bag and a production device thereof through improvement. The technical solutions of the present invention are: As shown in figure 10, a packaging bag comprises a bag body, wherein bottom portions of the bag body comprise a V shape.

[0020] As shown in figures 1-9, a packaging bag production device comprises a workbench 1, wherein an outer top wall of the workbench 1 is fixedly connected to a support frame 2, an outer top wall of the support frame 2 is installed with a motor 5, one end portion of an output shaft of the motor 5 is connected to a rotating roller 7 through a coupling, an inner bottom wall of the support frame 2 is fixedly connected to a fixed plate 9, an outer top wall of the fixed plate 9 is provided with circular holes, inner walls of the circular holes are slidably connected to first support rods 4, outer top walls of the first support rods 4 are fixedly connected to a pressing plate 8, outer bottom walls of the first support rods 4 are installed with cutting knives 14, outer walls at both sides of the rotating roller 7 are installed with cams 6, and outer walls at both sides of bottom end portions of the fixed plate 9 are fixedly connected to side frames 3, outer walls at sides of the side frames 3 are provided with sliding grooves, inner walls of the side grooves are slidably connected to the sliding frames 18, inner bottom wall of the sliding frames 18 are fixedly connected to magnetic plates 19, inner bottom walls of the side frames 3 are slidably connected to second support rods 21, outer walls at sides of the second support rods 21 are fixedly connected to the sliding plates 17, outer walls at another sides of the second support rods 21 are fixedly connected to cleaning plates 15, outer top walls at sides of the cleaning plates 15 are fixedly connected to magnetic blocks 23, outer top walls at another sides of the cleaning plates 15 are fixedly connected to cleaning grids 24, inner bottom walls at both sides of the support frame 2 are fixedly connected to fixing rods 27, and outer walls of the fixing rods 27 are fixedly connected to triangular plates 25.

[0021] Further, the triangular plates 25 are arranged in linear arrays, the cleaning plates 15 are arranged in right-angled trapezoidal shapes, discharge grooves 26 are provided on outer top walls at sides of the cleaning plates 15, the discharge grooves 26 are adapted to sizes of the triangular plates 25, and outer bottom walls of the side frames 3 are fixedly connected with collection boxes 16, and the collection boxes 16 are located directly below the discharge grooves 26; the cams 6 are all in abutted connection with an outer top wall of the pressing plate 8, outer walls of the first support rods 4 are sleeved with first springs 12, and end portions of the first springs 12 are respectively fixedly connected to the pressing plate 8 and the fixed plate 9, outer walls of the second support rods 21 are sleeved with second springs 22, and end portions of the second springs 22 are respectively fixedly connected to the side frames 3 and the cleaning plates 15, the magnetic plates 19 are adapted to sizes of the magnetic blocks 23, bottom portions of the cutting knives 14 comprise conical arrangements, and the cleaning grids 24 are inclined, and the cutting knives 14 are adapted to sizes of the cleaning plates 15 and the cleaning grids 24; inner bottom walls at both sides of the support frame 2 are rotationally provided with rotating rods 28, and outer walls of the rotating rods 28 are fixedly connected to gears 30, outer bottom walls of the sliding plates 17 are fixedly connected to racks 20, and the gears 30 are meshed with the racks 20, outer walls at both sides of the rotating rods 28 are fixedly connected to connecting rods 29, and outer top walls of the connecting rods 29 are fixedly connected to first arc-shaped plates 13, which ensures that impurities remaining on the cleaning plates 15 can normally pass over the triangular plates 25 as the cleaning plates 15 move past the triangular plates 25; and when the cleaning plates 15 are reset, the impurities are blocked by the triangular plates 25, after the cleaning plates 15 are reset, the impurities are aligned with the discharge grooves 26 on the cleaning plates 15 and are directly collected and uniformly processed by the collection boxes 16 at bottom portions of the side frames 3 through the discharge grooves 26.

[0022] Further, at four corners of inner bottom wall of the support frame 2 are provided rectangular grooves, inner walls of the rectangular grooves are slidably connected to sliding blocks 34, and inner walls of the rectangular grooves are fixedly connected to third support rods 35, the sliding blocks 34 are slidably connected to outer walls of the third support rods 35, the outer walls of the third support rods 35 are sleeved with third springs 36, end portions of the third springs 36 are respectively fixedly connected to the sliding blocks 34 and the support frame 2, and outer walls of the sliding blocks 34 are fixedly connected to second arc-shaped plates 32; outer bottom walls at sides of the second arc-shaped plates 32 are fixedly connected pressing pads 33, outer walls at another sides of the second arc-shaped plates 32 are provided with mounting grooves, inner walls of the mounting grooves are rotationally provided with rolling shafts 37, outer walls at sides of the first arc-shaped plates 13 are provided with pushing grooves 31, inner walls of the pushing grooves 31 are bonded with rubber pads, and the pushing grooves 31 are adapted to sizes of the rolling shafts 37, so as to facilitate the cutting process of the cutting knives 14, when the cleaning plates 15 are reset after the cutting is completed, the first arc-shaped plates 13 are also reset, and the second arc-shaped plates 32 are also reset under the action of the third support rods 35 and the third springs 36 to release packaging bags, and continue to input new packaging bags to repeat the cutting.;

[0023] Further, the pressing pads 33 are all highly adapted to height of the rolling shafts 37, the first arc-shaped plates 13 are all in abutted connection with inner walls of the second arc-shaped plates 32, the sliding frames 18 are located above the collection boxes 16, the sliding frames 18 are located obliquely above the cutting knives 14, and outer bottom walls at both sides of the fixed plate 9 are provided with storage grooves, and the storage grooves are all adapted to sizes of the sliding frames 18; a transmission wheel group 10 is installed on an outer side wall of the support frame 2 and the workbench 1; a conveying groove is opened on outer top wall at one side of the workbench 1; a main transmission shaft 38 is rotationally arranged on an inner side wall of the conveying groove; a driven shaft 39 is rotationally arranged on another inner side wall of the conveying groove; a transmission belt 11 is wound around outer walls of the main transmission shaft 38 and the driven shaft 39; the main transmission shaft 38 is fixedly connected to an inner bottom wall of the transmission wheel group 10; and the rotating roller 7 is fixedly connected to a top inner wall of the transmission wheel group 10, so that each time the rotating roller 7 drives the cams 6 to rotate one circle, the cutting knives 14 complete lifting, descending, cutting and resetting, simultaneously, the transmission wheel group 10 also drives the main transmission shaft 38, the driven shaft 39 and the transmission belt 11 to rotate to transport the cut packaging bags, thereby further improving the synchronization of the cutting structure.

[0024] Working Principle: during the production cutting of packaging bags, packaging bags are placed on workbench 1, when positions that need to be cut are moved directly under the cutting knives 14, the motor 5 on the support frame 2 is activated, the motor 5 drives the rotating roller 7 to rotate, which in turn presses down on the pressing plate 8 via two cams 6, the pressing plate 8 lowers the first support rod 4 and cutting knives 14, allowing the cutting knives 14 to cut the packaging bags, the conical cutting knives 14 will press against cleaning plates 15 on both sides when the cutting knives 14 descend, the cleaning plates 15 align with the cleaning grids 24 near the corners of cutting knives 14 to clear any residual material fragments, coatings, or adhesives from the cutting knives 14, which ensures that impurities do not adhere to the cutting knives 14 during the cutting process, thus preventing negative effects; when cutting knives 14 descend to lowest positions thereof to cut packaging bags, the two cleaning plates 15 are pressed and slide outward, the second support rods 21 simultaneously press the sliding plates 17 to move, while the sliding frames 18 are also released and slide down on the side frames 3, the magnetic blocks 23 on the cleaning plates 15 connect with magnetic plates 19 at the bottom of sliding frames 18 through attraction, fixing the cleaning plates 15 in place by suction; once the cutting knives 14 have completed the cut, the cams 6 rotate back to original positions thereof, and the first springs 12 on outer walls of the first support rods 4 control the resetting of the cutting knives 14; and at this point, the cleaning plates 15 are still held in place by the magnetic plates 19 and cannot reset, preventing the cleaning plates 15 from clearing impurities off the cutting knives 14, which could cause impurities to fall onto packaging bags; as the cutting knives 14 continue to rise until contacting the top portions of sliding frames 18, the sliding frames 18 are risen accordingly, the magnetic plate 19 at the bottom of sliding frames 18 separates from the magnetic blocks 23 on the cleaning plates 15, at this time, the cleaning plates 15 are reset due to the action of the second springs 22 on outer walls of the second support rods 21, so as to abut against cutting edges at bottom portions of the cutting knives 14, which ensures that when the cutting knives 14 descend next time to cut packaging bags, the cutting knives will again be cleaned by cleaning plates 15 and cleaning grids 24, allowing impurities adhered to outer walls to drop onto the cleaning plates 15 and not affecting the next cutting effectiveness of the packaging bags.

[0025] After the cleaning plates 15 work with cleaning grids 24 to remove impurities adhered to the cutting knives 14, the impurities will fall onto cleaning plates 15, the cleaning grids 24 on both sides of the cleaning plates 15 form a V-shape as they approach each other, providing a limitation at the bottom of the cutting knives 14, ensuring that the cutting knives 14 descend precisely between the two cleaning plates 15 and preventing blade collision; whenever impurities are pushed and dropped onto the cleaning plates 15, impurities will pass through the triangular plates 25 connected by the fixed rod 27 at the bottom of the support frame 2 when the cleaning plates 15 are pressed and slide outward; the triangular plates 25 are arranged in right-triangle shapes and comprise sides connecting with the impurities being inclined, while opposite sides thereof are vertical, which ensures that the impurities resting on the cleaning plates 15 can normally pass over triangular plates 25 as the cleaning plates 15 move; when the cleaning plates 15 reset, impurities are blocked by the triangular plates 25, after the cleaning plates 15 are reset, the impurities are aligned with the discharge grooves 26 on the cleaning plates 15 and are directly collected and uniformly processed by the collection boxes 16 at bottom portions of the side frames 3 through the discharge grooves 26.

[0026] Each time the cleaning plates 15 slide outwards, the sliding plates 17 are driven to move, the gears 30 are rotated on the rotating rods 28 via racks 20, which drives the first arc-shaped plates 13 to rotate downward, as the first arc-shaped plates rotate, the second arc-shaped plates are pressed down 32, when the second arc-shaped plates 32 descend, packaging bags are pressed against on top of workbench 1 through the pressing pads 33 and fixed in place, as the first arc-shaped plates (13) continue to rotate, the pushing grooves 31 thereon connect with the rolling shafts 37 on the second arc-shaped plates 32, the rolling shafts 37 on both sides of the second arc-shaped plates 32 rotate in opposite directions, ensuring contact with packaging bags and continuously applying force to both sides while rotating, keeping packaging bags taut, which facilitates the cutting process of the cutting knives 14; after cutting is completed and the cleaning plates 15 reset, the first arc-shaped plates 13 also reset, and the second arc-shaped plates 32 release packaging bags under the influence of the third support rods 35 and the third springs 36, allowing new packaging bags to be inputted for repeated cutting.

[0027] The rotating roller 7 is connected to the main transmission shaft 38 on the workbench 1 through the transmission wheel group 10, each time the rotating roller 7 drives the cams 6 to rotate one full circle, completing the lifting, descending, cutting and resetting of cutting knives 14, the transmission wheel group 10 also rotates the main transmission shaft 38, the driven shaft 39, and the transmission belt 11 to convey the finished packaging bags, further enhancing the synchronization of the cutting structure; the packaging bag body uses a V-shaped bottom design, breaking through the conventional paper bag structure's triangular position rupture phenomenon; after bags are formed, there are no crease lines on either side, improving the aesthetics of bags, increasing load-bearing capacity thereof, and avoiding the common issue of glue failure at the bottom of conventional bags.

[0028] The technical means disclosed in the solutions of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Examples

Embodiment Construction

[0018]The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019]The present invention provides a packaging bag and a production device thereof through improvement. The technical solutions of the present invention are: As shown in figure 10, a packaging bag comprises a bag body, wherein bottom portions of the bag body comprise a V shape.

[0020]As shown in figures 1-9, a packaging bag production device comprises a workbench 1, wherein an outer top wall of the workbench 1 is fixedly connected to a support frame 2, an outer top wall of the support frame 2 is installe...

Technical Field

[0001] The present invention relates to the technical field of packaging bags, in particular to a packaging bag and a production device thereof.Background Technology

[0002] Packaging bags refer to bags used for packaging various items, facilitating the transportation of goods during production and circulation, and making storage easier. Packaging bags are widely used in daily life and industrial production. Paper food packaging bags are designed for preserving and storing food. During the production process of paper food packaging bags, cutting devices are required to cut the bag bodies.

[0003] After searching, it is found that a Chinese patent with publication number CN218701703U discloses a paper packaging bag cutting production device, wherein by arranging a mounting mechanism, a connection seat serves to connect a rotating rod and a connecting plate, paper samples to be cut are passed between a workbench and a drive roller, and a motor then rotates the rotating rod, causing a drive roller to move the rubber strip, which drives paper samples to the right for cutting operations, which is convenient for operation; by setting up a cutting mechanism, a mounting plate serves to install a blade and a second spring, pressing blocks are arranged to secure the paper samples in place, an electric push rod pushes the cutting mechanism downward, compressing the second spring as the pressing blocks presses down on the paper samples, and the pressing blocks on both sides hold the paper samples in position while the blade cuts through them, and cut paper samples then fall into a collection box through a trapezoidal slot, which not only prevents the paper samples from shifting during cutting, making it easier to perform the cut and improving cutting efficiency, but also facilitates the collection of the cut paper samples, enhancing usability.

[0004] Based on the above search summarising the prior art, it has been found that conventional cutting devices for packaging bags are prone to impurities accumulation on outer walls of the cutting knives during the cutting process. These impurities include tiny fragments of materials, coatings, or adhesives, etc. After a long period of cutting, the cutting knives are susceptable to adherence of impurities and contamination, which not only affects the precision and efficiency of cutting but may also require frequent cleaning or replacement of tools. Furthermore, this can lead to uneven cutting edges, burrs, or adhesion, negatively impacting the appearance and performance of the packaging bags, thereby reducing the production quality of packaging bags.Summary of the present invention

[0005] The purpose of the present invention is to provide a packaging bag and a production device thereof to solve the problems mentioned in the above background technology.

[0006] The technical solutions of the present invention are as follows: a packaging bag comprises a bag body, wherein bottom portions of the bag body comprise a V-shaped arrangement.

[0007] A packaging bag production device, comprises a workbench, wherein an outer top wall of the workbench is fixedly connected to a support frame, an outer top wall of the support frame is installed with a motor, one end portion of an output shaft of the motor is connected to a rotating roller through a coupling, an inner bottom wall of the support frame is fixedly connected to a fixed plate, an outer top wall of the fixed plate is provided with circular holes, inner walls of the circular holes are slidably connected to first support rods, outer top walls of the first support rods are fixedly connected to a pressing plate, outer bottom walls of the first support rods are installed with cutting knives, outer walls at both sides of the rotating roller are installed with cams, and outer walls at both sides of bottom end portions of the fixed plate are fixedly connected to side frames, outer walls at sides of the side frames are provided with sliding grooves, inner walls of the side grooves are slidably connected to the sliding frames, inner bottom wall of the sliding frames are fixedly connected to magnetic plates, inner bottom walls of the side frames are slidably connected to second support rods, outer walls at sides of the second support rods are fixedly connected to the sliding plates, outer walls at another sides of the second support rods are fixedly connected to cleaning plates, outer top walls at sides of the cleaning plates are fixedly connected to magnetic blocks, outer top walls at another sides of the cleaning plates are fixedly connected to cleaning grids, inner bottom walls at both sides of the support frame are fixedly connected to fixing rods, and outer walls of the fixing rods are fixedly connected to triangular plates.

[0008] Preferably, the triangular plates are arranged in linear arrays, the cleaning plates are arranged in right-angled trapezoidal shapes, discharge grooves are provided on outer top walls at sides of the cleaning plates, the discharge grooves are adapted to sizes of the triangular plates, and outer bottom walls of the side frames are fixedly connected with collection boxes, and the collection boxes are located directly below the discharge grooves.

[0009] Preferably, the cams are all in abutted connection with an outer top wall of the pressing plate, outer walls of the first support rods are sleeved with first springs, and end portions of the first springs are respectively fixedly connected to the pressing plate and the fixed plate, outer walls of the second support rods are sleeved with second springs, and end portions of the second springs are respectively fixedly connected to the side frames and the cleaning plates, the magnetic plates are adapted to sizes of the magnetic blocks, bottom portions of the cutting knives comprise conical arrangements, and the cleaning grids are inclined, and the cutting knives are adapted to sizes of the cleaning plates and the cleaning grids.

[0010] Preferably, inner bottom walls at both sides of the support frame are rotationally provided with rotating rods, and outer walls of the rotating rods are fixedly connected to gears, outer bottom walls of the sliding plates are fixedly connected to racks, and the gears are meshed with the racks, outer walls at both sides of the rotating rods are fixedly connected to connecting rods, and outer top walls of the connecting rods are fixedly connected to first arc-shaped plates.

[0011] Preferably, at four corners of inner bottom wall of the support frame are provided rectangular grooves, inner walls of the rectangular grooves are slidably connected to sliding blocks, and inner walls of the rectangular grooves are fixedly connected to third support rods, the sliding blocks are slidably connected to outer walls of the third support rods, the outer walls of the third support rods are sleeved with third springs, end portions of the third springs are respectively fixedly connected to the sliding blocks and the support frame, and outer walls of the sliding blocks are fixedly connected to second arc-shaped plates.

[0012] Preferably, outer bottom walls at sides of the second arc-shaped plates are fixedly connected pressing pads, outer walls at another sides of the second arc-shaped plates are provided with mounting grooves, inner walls of the mounting grooves are rotationally provided with rolling shafts, outer walls at sides of the first arc-shaped plates are provided with pushing grooves, inner walls of the pushing grooves are bonded with rubber pads, and the pushing grooves are adapted to sizes of the rolling shafts.

[0013] Preferably, the pressing pads are all highly adapted to height of the rolling shafts, the first arc-shaped plates are all in contact with inner walls of the second arc-shaped plates, the sliding frames are located above the collection boxes, the sliding frames are located obliquely above the cutting knives, and outer bottom walls at both sides of the fixed plate are provided with storage grooves, and the storage grooves are all adapted to sizes of the sliding frames.

[0014] Preferably, a transmission wheel group is installed on an outer side wall of the support frame and the workbench; a conveying groove is opened on outer top wall at one side of the workbench; a main transmission shaft is rotationally arranged on an inner side wall of the conveying groove; a driven shaft is rotationally arranged on another inner side wall of the conveying groove; a transmission belt is wound around outer walls of the main transmission shaft and the driven shaft; the main transmission shaft is fixedly connected to an inner bottom wall of the transmission wheel group; and the rotating roller is fixedly connected to a top inner wall of the transmission wheel group.Beneficial Effects

[0015] The present invention provides an improved packaging bag and a production device thereof, and gets following improvements and advantages compared to the prior art: I. The present invention is equipped with a support frame, cams, cutting knives, cleaning plates, cleaning grids, and sliding frames, so that each time the cams rotate one circle, the cutting knives moves up and down to complete the cutting process of packaging bags; when the cutting knives descend, both sides of the cleaning plates are pressed, so as to cause the cleaning plates and the cleaning grids to slide tightly against the cutting knives to scrape away impurities attached from the previous cut; and the sliding frames descend with the cutting knives, and magnetic plates at the bottom hold the cutting knives in place to ensure that the cleaning plates do not immediately return and contact the cutting knives when the cutting knives rise, which avoids the phenomenon of impurities being scraped off and falling onto packaging bags; only when the cutting knives continue to rise and lift the sliding frames can the magnetic plates of the sliding frames separate from the magnets on the cleaning plates, allowing the cleaning plates to reset and touch the bottom of the cutting knives; and when the cutting knives descend again to cut packaging bags, impurities are scraped off and cleaned again, ensuring cutting accuracy and efficiency while avoiding frequent cleaning or replacement of tools, which may cause uneven edges, burrs, or adhesion affecting the appearance and functionality of packaging bags, thereby enhancing the production quality. II. The present invention is provided with cleaning plates, cleaning grids, fixed rods, and triangular plates, so that the cleaning grids on both sides of the cleaning plates form a V-shape when close together, limiting the bottom of the cutting knives and ensuring the cutting knives accurately insert between the two cleaning plates upon descent, preventing blade collision; fixed triangular plates allow impurities on the cleaning plates to move smoothly to opposite sides of the triangular plates; when the cleaning plates reset, impurities are blocked by vertical edges of the triangular plates, allowing the impurities to fall into discharge grooves and be collected in collection boxes for unified processing, thus preventing excessive accumulation of impurities that could affect the cutting of packaging bags. III. The present invention is installed with gears, racks, first arc-shaped plates and second arc-shaped plates, pressing pads, and rolling shafts, so that through the linkage of the sliding plates, the gears, and the racks, every time the cutting knives rise and fall to cut packaging bags, the first arc-shaped plates and second arc-shaped plates apply pressure; as the arc-shaped plates descend, packaging bags are pressed against via the pressing pads and rolling shafts, keeping packaging bags taut for easier cutting; and pushing grooves of the first arc-shaped plates contact the rolling shafts, driving the rolling shafts to rotate, further applying force to packaging bags and ensuring smooth cutting, thereby improving the cutting and production efficiency of the packaging bags. IV. The present invention is provided with a rotating roller, a transmission wheel group, a main transmission shaft, and a driven shaft, so that through linkage, every time the rotating rollers rotate one circle, the main transmission shaft and the driven shaft to move the transmission belt a certain distance, facilitating the discharge process after cutting packaging bags and further enhancing the production quality of packaging bags. V. The present invention utilizes a V-shaped bottom design for the packaging bag body, breaking through the conventional triangular positions that result in paper breakage in paper bags; after the bag is formed, there are no crease lines on either side, enhancing the aesthetic appeal of bags and increasing load-bearing capacity thereof, thereby avoiding the common issue of adhesive failure at the bottom of conventional bags. Brief Description of the Drawings

[0016] The present invention will be further explained below in conjunction with accompanying drawings and embodiments. Figure 1 is a schematic diagram of an overall structure of the present invention. Figure 2 is a schematic diagram of a cross-sectional structure of a support frame connection structure of the present invention. Figure 3 is a schematic diagram of a cross-sectional structure of a cutting knife of the present invention in a cutting state. Figure 4 is a schematic diagram of a cross-sectional structure of a side frame connection structure of the present invention. Figure 5 is a schematic diagram of a cross-sectional structure of a cleaning plate connection structure of the present invention. Figure 6 is a schematic diagram of a triangular plate connection structure of the present invention. Figure 7 is a schematic diagram of the connection structure of an arc plate 2 before being pressed. Figure 8 is a schematic diagram of the connection structure of the arc plate 2 after being pressed. Figure 9 is a schematic diagram of a main transmission shaft connection structure of the present invention. Figure 10 is a schematic diagram of a bag body structure of a packaging bag of the present invention.

[0017] The markups in the drawings are indicated as follows: 1-workbench; 2-support frame; 3-side frames; 4-first support rods; 5-motor; 6-cam; 7-rotating roller; 8-pressing plate; 9-fixed plate; 10-transmission wheel group; 11-transmission belt; 12-first spring; 13-first arc-shaped plate; 14-cutting knives; 15-cleaning plate; 16-collection box; 17-sliding plate; 18-slide frame; 19-magnetic plate; 20-rack; 21-second support rod; 22-second spring; 23-magnetic block; 24-cleaning grid; 25-triangular plate; 26-discharge groove; 27-fixing rod; 28-rotating rod; 29-connecting rod; 30-gear; 31-pushing groove; 32-second arc-shaped plate; 33-pressing pad; 34-sliding block; 35-third support rod; 36-third spring; 37-rolling shaft; 38-main transmission shaft; and 39- driven shaft.Specific Embodiments of the Present invention

[0018] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention provides a packaging bag and a production device thereof through improvement. The technical solutions of the present invention are: As shown in figure 10, a packaging bag comprises a bag body, wherein bottom portions of the bag body comprise a V shape.

[0020] As shown in figures 1-9, a packaging bag production device comprises a workbench 1, wherein an outer top wall of the workbench 1 is fixedly connected to a support frame 2, an outer top wall of the support frame 2 is installed with a motor 5, one end portion of an output shaft of the motor 5 is connected to a rotating roller 7 through a coupling, an inner bottom wall of the support frame 2 is fixedly connected to a fixed plate 9, an outer top wall of the fixed plate 9 is provided with circular holes, inner walls of the circular holes are slidably connected to first support rods 4, outer top walls of the first support rods 4 are fixedly connected to a pressing plate 8, outer bottom walls of the first support rods 4 are installed with cutting knives 14, outer walls at both sides of the rotating roller 7 are installed with cams 6, and outer walls at both sides of bottom end portions of the fixed plate 9 are fixedly connected to side frames 3, outer walls at sides of the side frames 3 are provided with sliding grooves, inner walls of the side grooves are slidably connected to the sliding frames 18, inner bottom wall of the sliding frames 18 are fixedly connected to magnetic plates 19, inner bottom walls of the side frames 3 are slidably connected to second support rods 21, outer walls at sides of the second support rods 21 are fixedly connected to the sliding plates 17, outer walls at another sides of the second support rods 21 are fixedly connected to cleaning plates 15, outer top walls at sides of the cleaning plates 15 are fixedly connected to magnetic blocks 23, outer top walls at another sides of the cleaning plates 15 are fixedly connected to cleaning grids 24, inner bottom walls at both sides of the support frame 2 are fixedly connected to fixing rods 27, and outer walls of the fixing rods 27 are fixedly connected to triangular plates 25.

[0021] Further, the triangular plates 25 are arranged in linear arrays, the cleaning plates 15 are arranged in right-angled trapezoidal shapes, discharge grooves 26 are provided on outer top walls at sides of the cleaning plates 15, the discharge grooves 26 are adapted to sizes of the triangular plates 25, and outer bottom walls of the side frames 3 are fixedly connected with collection boxes 16, and the collection boxes 16 are located directly below the discharge grooves 26; the cams 6 are all in abutted connection with an outer top wall of the pressing plate 8, outer walls of the first support rods 4 are sleeved with first springs 12, and end portions of the first springs 12 are respectively fixedly connected to the pressing plate 8 and the fixed plate 9, outer walls of the second support rods 21 are sleeved with second springs 22, and end portions of the second springs 22 are respectively fixedly connected to the side frames 3 and the cleaning plates 15, the magnetic plates 19 are adapted to sizes of the magnetic blocks 23, bottom portions of the cutting knives 14 comprise conical arrangements, and the cleaning grids 24 are inclined, and the cutting knives 14 are adapted to sizes of the cleaning plates 15 and the cleaning grids 24; inner bottom walls at both sides of the support frame 2 are rotationally provided with rotating rods 28, and outer walls of the rotating rods 28 are fixedly connected to gears 30, outer bottom walls of the sliding plates 17 are fixedly connected to racks 20, and the gears 30 are meshed with the racks 20, outer walls at both sides of the rotating rods 28 are fixedly connected to connecting rods 29, and outer top walls of the connecting rods 29 are fixedly connected to first arc-shaped plates 13, which ensures that impurities remaining on the cleaning plates 15 can normally pass over the triangular plates 25 as the cleaning plates 15 move past the triangular plates 25; and when the cleaning plates 15 are reset, the impurities are blocked by the triangular plates 25, after the cleaning plates 15 are reset, the impurities are aligned with the discharge grooves 26 on the cleaning plates 15 and are directly collected and uniformly processed by the collection boxes 16 at bottom portions of the side frames 3 through the discharge grooves 26.

[0022] Further, at four corners of inner bottom wall of the support frame 2 are provided rectangular grooves, inner walls of the rectangular grooves are slidably connected to sliding blocks 34, and inner walls of the rectangular grooves are fixedly connected to third support rods 35, the sliding blocks 34 are slidably connected to outer walls of the third support rods 35, the outer walls of the third support rods 35 are sleeved with third springs 36, end portions of the third springs 36 are respectively fixedly connected to the sliding blocks 34 and the support frame 2, and outer walls of the sliding blocks 34 are fixedly connected to second arc-shaped plates 32; outer bottom walls at sides of the second arc-shaped plates 32 are fixedly connected pressing pads 33, outer walls at another sides of the second arc-shaped plates 32 are provided with mounting grooves, inner walls of the mounting grooves are rotationally provided with rolling shafts 37, outer walls at sides of the first arc-shaped plates 13 are provided with pushing grooves 31, inner walls of the pushing grooves 31 are bonded with rubber pads, and the pushing grooves 31 are adapted to sizes of the rolling shafts 37, so as to facilitate the cutting process of the cutting knives 14, when the cleaning plates 15 are reset after the cutting is completed, the first arc-shaped plates 13 are also reset, and the second arc-shaped plates 32 are also reset under the action of the third support rods 35 and the third springs 36 to release packaging bags, and continue to input new packaging bags to repeat the cutting.;

[0023] Further, the pressing pads 33 are all highly adapted to height of the rolling shafts 37, the first arc-shaped plates 13 are all in abutted connection with inner walls of the second arc-shaped plates 32, the sliding frames 18 are located above the collection boxes 16, the sliding frames 18 are located obliquely above the cutting knives 14, and outer bottom walls at both sides of the fixed plate 9 are provided with storage grooves, and the storage grooves are all adapted to sizes of the sliding frames 18; a transmission wheel group 10 is installed on an outer side wall of the support frame 2 and the workbench 1; a conveying groove is opened on outer top wall at one side of the workbench 1; a main transmission shaft 38 is rotationally arranged on an inner side wall of the conveying groove; a driven shaft 39 is rotationally arranged on another inner side wall of the conveying groove; a transmission belt 11 is wound around outer walls of the main transmission shaft 38 and the driven shaft 39; the main transmission shaft 38 is fixedly connected to an inner bottom wall of the transmission wheel group 10; and the rotating roller 7 is fixedly connected to a top inner wall of the transmission wheel group 10, so that each time the rotating roller 7 drives the cams 6 to rotate one circle, the cutting knives 14 complete lifting, descending, cutting and resetting, simultaneously, the transmission wheel group 10 also drives the main transmission shaft 38, the driven shaft 39 and the transmission belt 11 to rotate to transport the cut packaging bags, thereby further improving the synchronization of the cutting structure.

[0024] Working Principle: during the production cutting of packaging bags, packaging bags are placed on workbench 1, when positions that need to be cut are moved directly under the cutting knives 14, the motor 5 on the support frame 2 is activated, the motor 5 drives the rotating roller 7 to rotate, which in turn presses down on the pressing plate 8 via two cams 6, the pressing plate 8 lowers the first support rod 4 and cutting knives 14, allowing the cutting knives 14 to cut the packaging bags, the conical cutting knives 14 will press against cleaning plates 15 on both sides when the cutting knives 14 descend, the cleaning plates 15 align with the cleaning grids 24 near the corners of cutting knives 14 to clear any residual material fragments, coatings, or adhesives from the cutting knives 14, which ensures that impurities do not adhere to the cutting knives 14 during the cutting process, thus preventing negative effects; when cutting knives 14 descend to lowest positions thereof to cut packaging bags, the two cleaning plates 15 are pressed and slide outward, the second support rods 21 simultaneously press the sliding plates 17 to move, while the sliding frames 18 are also released and slide down on the side frames 3, the magnetic blocks 23 on the cleaning plates 15 connect with magnetic plates 19 at the bottom of sliding frames 18 through attraction, fixing the cleaning plates 15 in place by suction; once the cutting knives 14 have completed the cut, the cams 6 rotate back to original positions thereof, and the first springs 12 on outer walls of the first support rods 4 control the resetting of the cutting knives 14; and at this point, the cleaning plates 15 are still held in place by the magnetic plates 19 and cannot reset, preventing the cleaning plates 15 from clearing impurities off the cutting knives 14, which could cause impurities to fall onto packaging bags; as the cutting knives 14 continue to rise until contacting the top portions of sliding frames 18, the sliding frames 18 are risen accordingly, the magnetic plate 19 at the bottom of sliding frames 18 separates from the magnetic blocks 23 on the cleaning plates 15, at this time, the cleaning plates 15 are reset due to the action of the second springs 22 on outer walls of the second support rods 21, so as to abut against cutting edges at bottom portions of the cutting knives 14, which ensures that when the cutting knives 14 descend next time to cut packaging bags, the cutting knives will again be cleaned by cleaning plates 15 and cleaning grids 24, allowing impurities adhered to outer walls to drop onto the cleaning plates 15 and not affecting the next cutting effectiveness of the packaging bags.

[0025] After the cleaning plates 15 work with cleaning grids 24 to remove impurities adhered to the cutting knives 14, the impurities will fall onto cleaning plates 15, the cleaning grids 24 on both sides of the cleaning plates 15 form a V-shape as they approach each other, providing a limitation at the bottom of the cutting knives 14, ensuring that the cutting knives 14 descend precisely between the two cleaning plates 15 and preventing blade collision; whenever impurities are pushed and dropped onto the cleaning plates 15, impurities will pass through the triangular plates 25 connected by the fixed rod 27 at the bottom of the support frame 2 when the cleaning plates 15 are pressed and slide outward; the triangular plates 25 are arranged in right-triangle shapes and comprise sides connecting with the impurities being inclined, while opposite sides thereof are vertical, which ensures that the impurities resting on the cleaning plates 15 can normally pass over triangular plates 25 as the cleaning plates 15 move; when the cleaning plates 15 reset, impurities are blocked by the triangular plates 25, after the cleaning plates 15 are reset, the impurities are aligned with the discharge grooves 26 on the cleaning plates 15 and are directly collected and uniformly processed by the collection boxes 16 at bottom portions of the side frames 3 through the discharge grooves 26.

[0026] Each time the cleaning plates 15 slide outwards, the sliding plates 17 are driven to move, the gears 30 are rotated on the rotating rods 28 via racks 20, which drives the first arc-shaped plates 13 to rotate downward, as the first arc-shaped plates rotate, the second arc-shaped plates are pressed down 32, when the second arc-shaped plates 32 descend, packaging bags are pressed against on top of workbench 1 through the pressing pads 33 and fixed in place, as the first arc-shaped plates (13) continue to rotate, the pushing grooves 31 thereon connect with the rolling shafts 37 on the second arc-shaped plates 32, the rolling shafts 37 on both sides of the second arc-shaped plates 32 rotate in opposite directions, ensuring contact with packaging bags and continuously applying force to both sides while rotating, keeping packaging bags taut, which facilitates the cutting process of the cutting knives 14; after cutting is completed and the cleaning plates 15 reset, the first arc-shaped plates 13 also reset, and the second arc-shaped plates 32 release packaging bags under the influence of the third support rods 35 and the third springs 36, allowing new packaging bags to be inputted for repeated cutting.

[0027] The rotating roller 7 is connected to the main transmission shaft 38 on the workbench 1 through the transmission wheel group 10, each time the rotating roller 7 drives the cams 6 to rotate one full circle, completing the lifting, descending, cutting and resetting of cutting knives 14, the transmission wheel group 10 also rotates the main transmission shaft 38, the driven shaft 39, and the transmission belt 11 to convey the finished packaging bags, further enhancing the synchronization of the cutting structure; the packaging bag body uses a V-shaped bottom design, breaking through the conventional paper bag structure's triangular position rupture phenomenon; after bags are formed, there are no crease lines on either side, improving the aesthetics of bags, increasing load-bearing capacity thereof, and avoiding the common issue of glue failure at the bottom of conventional bags.

[0028] The technical means disclosed in the solutions of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Examples

Embodiment Construction

[0018]The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019]The present invention provides a packaging bag and a production device thereof through improvement. The technical solutions of the present invention are: As shown in figure 10, a packaging bag comprises a bag body, wherein bottom portions of the bag body comprise a V shape.

[0020]As shown in figures 1-9, a packaging bag production device comprises a workbench 1, wherein an outer top wall of the workbench 1 is fixedly connected to a support frame 2, an outer top wall of the support frame 2 is installe...

Claims

1. A packaging bag, comprising a bag body, wherein bottom portions of the bag body comprise a V-shaped arrangement.

2. A packaging bag production device, comprising a workbench (1), wherein an outer top wall of the workbench (1) is fixedly connected to a support frame (2), an outer top wall of the support frame (2) is installed with a motor (5), one end portion of an output shaft of the motor (5) is connected to a rotating roller (7) through a coupling, an inner bottom wall of the support frame (2) is fixedly connected to a fixed plate (9), an outer top wall of the fixed plate (9) is provided with circular holes, inner walls of the circular holes are slidably connected to first support rods (4), outer top walls of the first support rods (4) are fixedly connected to a pressing plate (8), outer bottom walls of the first support rods (4) are installed with cutting knives (14), outer walls at both sides of the rotating roller (7) are installed with cams (6), and outer walls at both sides of bottom end portions of the fixed plate (9) are fixedly connected to side frames (3), outer walls at sides of the side frames (3) are provided with sliding grooves, inner walls of the side grooves are slidably connected to the sliding frames (18), inner bottom wall of the sliding frames (18) are fixedly connected to magnetic plates (19), inner bottom walls of the side frames (3) are slidably connected to second support rods (21), outer walls at one side of the second support rods (21) are fixedly connected to the sliding plates (17), outer walls at another side of the second support rods (21) are fixedly connected to cleaning plates (15), outer top walls at one side of the cleaning plates (15) are fixedly connected to magnetic blocks (23), outer top walls at another side of the cleaning plates (15) are fixedly connected to cleaning grids (24), inner bottom walls at both sides of the support frame (2) are fixedly connected to fixing rods (27), and outer walls of the fixing rods (27) are fixedly connected to triangular plates (25).

3. The packaging bag production device according to claim 2, wherein the triangular plates (25) are arranged in linear arrays, the cleaning plates (15) are arranged in right-angled trapezoidal shapes, discharge grooves (26) are provided on outer top walls at sides of the cleaning plates (15), the discharge grooves (26) are adapted to sizes of the triangular plates (25), and outer bottom walls of the side frames (3) are fixedly connected with collection boxes (16), and the collection boxes (16) are located directly below the discharge grooves (26).

4. The packaging bag production device according to claim 2, wherein the cams (6) are all in abutted connection with an outer top wall of the pressing plate (8), outer walls of the first support rods (4) are sleeved with first springs (12), and end portions of the first springs (12) are respectively fixedly connected to the pressing plate (8) and the fixed plate (9), outer walls of the second support rods (21) are sleeved with second springs (22), and end portions of the second springs (22) are respectively fixedly connected to the side frames (3) and the cleaning plates (15), the magnetic plates (19) are adapted to sizes of the magnetic blocks (23), bottom portions of the cutting knives (14) have conical shapes, and the cleaning grids (24) are inclined, and the cutting knives (14) are adapted to sizes of the cleaning plates (15) and the cleaning grids (24).

5. The packaging bag production device according to claim 2, wherein inner bottom walls at both sides of the support frame (2) are rotationally provided with rotating rods (28), and outer walls of the rotating rods (28) are fixedly connected to gears (30), outer bottom walls of the sliding plates (17) are fixedly connected to racks (20), and the gears (30) are meshed with the racks (20), outer walls at both sides of the rotating rods (28) are fixedly connected to connecting rods (29), and outer top walls of the connecting rods (29) are fixedly connected to first arc-shaped plates (13).

6. The packaging bag production device according to claim 5, wherein at four corners of inner bottom wall of the support frame (2) are provided rectangular grooves, inner walls of the rectangular grooves are slidably connected to sliding blocks (34), and inner walls of the rectangular grooves are fixedly connected to third support rods (35), the sliding blocks (34) are slidably connected to outer walls of the third support rods (35), the outer walls of the third support rods (35) are sleeved with third springs (36), end portions of the third springs (36) are respectively fixedly connected to the sliding blocks (34) and the support frame (2), and outer walls of the sliding blocks (34) are fixedly connected to second arc-shaped plates (32).

7. The packaging bag production device according to 6, wherein outer bottom walls at sides of the second arc-shaped plates (32) are fixedly connected pressing pads (33), outer walls at another sides of the second arc-shaped plates (32) are provided with mounting grooves, inner walls of the mounting grooves are rotationally provided with rolling shafts (37), outer walls at sides of the first arc-shaped plates (13) are provided with pushing grooves (31), inner walls of the pushing grooves (31) are bonded with rubber pads, and the pushing grooves (31) are adapted to sizes of the rolling shafts (37).

8. The packaging bag production device according to 7, wherein the pressing pads (33) are all adapted to height of the rolling shafts (37), the first arc-shaped plates (13) are all in contact with inner walls of the second arc-shaped plates (32), the sliding frames (18) are located above the collection boxes (16), the sliding frames (18) are located obliquely above the cutting knives (14), and outer bottom walls at both sides of the fixed plate (9) are provided with storage grooves, and the storage grooves are all adapted to sizes of the sliding frames (18).

9. The packaging bag production device according to 2, wherein a transmission wheel group (10) is installed on an outer side wall of the support frame (2) and the workbench (1); a conveying groove is opened on an outer top wall at one side of the workbench (1); a main transmission shaft (38) is rotationally arranged on an inner side wall of the conveying groove; a driven shaft (39) is rotationally arranged on another inner side wall of the conveying groove; a transmission belt (11) is wound around outer walls of the main transmission shaft (38) and the driven shaft (39); the main transmission shaft (38) is fixedly connected to an inner bottom wall of the transmission wheel group (10); and the rotating roller (7) is fixedly connected to a top inner wall of the transmission wheel group (10).

Images