CN219236330U

CN219236330U - Automatic production line for flexible freight bags and flexible freight bags

Info

Publication number: CN219236330U
Application number: CN202122595881.4U
Authority: CN
Inventors: 张世权; 张志一
Original assignee: Shandong Juyi Tiangong Industrial Automation Co ltd
Current assignee: Shandong Juyi Tiangong Industrial Automation Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2023-06-23
Anticipated expiration: 2031-10-27

Abstract

The utility model provides an automatic flexible freight bag production line and a flexible freight bag, wherein the automatic flexible freight bag production line comprises a sewing device, the sewing device comprises an annular track and a main body tool, and the main body tool can circularly move on the annular track and sequentially pass through a feeding port blanking station (A), a bag body blanking sewing station (B), a bag body bag bottom sewing station (C), a bag body suspender sewing station (D) and a flexible freight bag separating station (E). According to the scheme, the main body tool is adopted to circularly move on the annular track, and the flexible freight bags are sewn at each station, so that the flexible freight bags can be automatically produced, and the manufacturing efficiency is remarkably improved. The flexible freight bag is manufactured by the flexible freight bag automatic production line.

Description

Automatic production line for flexible freight bags and flexible freight bags

Technical Field

The utility model relates to the field of automatic production lines, in particular to an automatic production line for manufacturing flexible freight bags and a flexible freight bag.

Background

The flexible transport packaging container is widely applied, and can realize unitization by being matched with a crane or a forklift. The production lines of common flexible freight bag production enterprises are all in a semi-automatic form, a large amount of personnel are required to intervene, the production efficiency is low, and the controllability of the production quality is poor. At present, no mature automatic flexible freight bag production line exists.

Therefore, in practice, it is needed to provide an automatic production line for flexible freight bags, which can realize full-automatic production, so as to reduce personnel intervention and improve production efficiency and quality.

Disclosure of Invention

The utility model aims to provide an automatic production line for flexible freight bags, which can realize full-automatic production so as to improve production efficiency.

In one aspect of the utility model, an automatic flexible freight bag production line is provided, which comprises a sewing device, wherein the sewing device comprises an annular rail and a main body tool, and the main body tool can circularly move on the annular rail and sequentially pass through a feeding port blanking station (A), a bag body blanking sewing station (B), a bag body bag bottom sewing station (C), a bag body suspender sewing station (D) and a flexible freight bag separating station (E). A feeding hole blanking station (A) is provided with a feeding hole blanking machine which provides a feeding hole and sleeves the feeding hole to the main body tool; a bag body blanking machine is arranged at a bag body blanking sewing station (B) and used for providing a bag body and sleeving the bag body to a main body tool, and a bag body feeding port sewing machine is also arranged and used for sewing the bag body and the feeding port; a bag body and bag bottom sewing machine is arranged at a bag body and bag bottom sewing station (C) and is used for sewing the bag body and the bag bottom; a bag body suspender sewing machine is arranged at a bag body suspender sewing station (D) and is used for sewing the bag body and the suspender to form a flexible freight bag; and (3) at a flexible freight bag separating station (E), a flexible freight bag separating machine is arranged, the flexible freight bag is separated from a main body tool, and the main body tool is moved to a feeding hole blanking station (A).

According to the scheme, the main body tool is adopted to circularly move on the annular track, and the flexible freight bags are sewn at each station, so that the flexible freight bags can be automatically produced, and the manufacturing efficiency is remarkably improved.

Optionally, the flexible freight bag automatic production line comprises a plurality of main body tools.

According to this scheme, can adopt a plurality of main part frock to support and process a plurality of flexible freight bags simultaneously, further improve manufacturing efficiency.

Optionally, a feed opening blanking station (a) is further provided with a feed opening sewing machine which hemms the upper end edge of the feed opening and sews the tie to the feed opening.

Optionally, at the bag body blanking sewing station (B), a bag body material opening sewing machine curls and sews the lower end edge of the bag body and the lower end edge of the material inlet.

Optionally, at a bag body and bag bottom sewing station (C), the bag body and bag bottom sewing machine hemms and sews the upper end edge of the bag body and the edge of the bag bottom in the bag bottom hanging strip assembly which is sewn in advance; the bag bottom hanging belt assembly comprises a bag bottom and a hanging belt sewn on the bag bottom, wherein a bag body reinforcing block and a bag bottom reinforcing block are sewn on the hanging belt in advance, the bag body reinforcing block is used for being sewn to the bag body, and the bag bottom reinforcing block is used for being sewn to the bag bottom.

According to the scheme, the bag body reinforcing block and the bag bottom reinforcing block are sewn on the hanging belt in advance, so that the manufacturing efficiency can be further improved.

Optionally, in the bag bottom sling assembly, the sling is also pre-sewn with a reinforcing belt and a sling cloth.

Optionally, at the bag body and bag bottom sewing station (C), a bag bottom transferring machine is further arranged, and the bag bottom hanging strip assembly which is sewn in advance is transferred to the main body tool.

Optionally, a strap positioning device is further arranged at the bag body strap sewing station (D) and used for straightening down the naturally-drooping strap so as to be attached to the bag body.

According to the scheme, the hanging strip which naturally sags is straightened downwards to be attached to the bag body, and the hanging strip and the bag body can be sewn, so that simple and reliable sewing can be realized.

Optionally, the main body tooling is capable of a swivel motion.

According to the scheme, the sewing machine at each station can be fixed during sewing, the sewing position can rotate relative to the sewing machine through the rotation of the main body tool, and the sewing processing at a plurality of different positions is realized, so that the structure is simplified.

Optionally, the upside of main part frock is cylindrical bearing structure, and rotation drive structure and removal actuating mechanism are installed to the downside, and rotation drive mechanism drives main part frock gyration motion, and removal actuating mechanism drives main part frock and removes along annular track.

Optionally, main part frock can switch between open state and shrink state, and the diameter of main part frock grow under open state, props bag body and the feed inlet on it tightly, and the diameter of main part frock diminishes under the shrink state and releases and props tight power and be convenient for separate flexible freight bag.

Optionally, the main body fixture comprises a plurality of tension sheets which can be expanded and contracted, and the tension sheets can be switched between a state of being far away from each other and a state of being close to each other by an electric push rod, so that the main body fixture can be switched between the expanded state and the contracted state.

Optionally, the flexible container automatic production line further comprises a detection device for stretching the flexible container, so that an operator can detect the inner surface and the outer surface of the flexible container visually or by using tools.

Optionally, the flexible container automatic production line further comprises a folding device for flattening and folding the flexible container for a plurality of times; the folding device comprises a conveying belt, and a pre-pressing conveying station, a folding station and a pushing station which are sequentially arranged along the conveying belt.

Optionally, the flexible container automatic production line further comprises a stacking device for stacking a plurality of folded flexible containers; the stacking device comprises a lifting station box assembly, wherein the lifting station box assembly comprises a plurality of station boxes aligned in the vertical direction, the station box assembly is configured to gradually fall from top to bottom, and one station box can be aligned with a pushing station of the folding device for receiving a flexible container in one step; the palletizing device further includes a plurality of ejector pins translatable together, which are simultaneously inserted into the plurality of station boxes, to simultaneously eject the plurality of flexible containers in a stacked state.

Optionally, the palletising apparatus comprises two said liftable station magazine assemblies, alternately for receiving and ejecting the flexible freight bags.

Optionally, the flexible container automatic production line further comprises a packing device for compressing the plurality of flexible containers and wrapping the upper wrapping cloth and the lower wrapping cloth on the outer sides of the flexible containers.

In another aspect of the present utility model, there is provided a flexible container made by the flexible container automated production line described above.

Drawings

FIG. 1 shows a schematic view of a flexible container manufactured by the flexible container automatic production line of the present utility model;

FIG. 2 shows a schematic bottom view of a flexible container manufactured by the flexible container automatic production line of the present utility model;

FIG. 3 shows a schematic composition of the automatic flexible freight bag production line of the present utility model;

FIG. 4 shows a perspective view of a sewing device in the automatic flexible freight bag production line of the present utility model;

fig. 5 shows a perspective view of a palletizing device in the flexible container automatic production line of the present utility model.

Reference numerals:

1 a feeding port; 2 hanging strips; 3, bag bottom; 4, bag body; 5 hanging the cloth; 6, bag body reinforcing blocks; 7, reinforcing the belt; 8, reinforcing blocks at the bottom of the bag; 9, banding; 10 labels; 100 sewing devices; 200 detection means; 300 folding means; 400 stacking devices; 500 packing devices; 101 a suspender sewing machine; 102, a bag blanking machine; 103, a hanging belt bag bottom sewing machine; 104 a feeding opening blanking machine; 105 feed opening sewing machine; 106, a bag body blanking machine; 107 bag body material inlet sewing machine; 108 a bag body and bag bottom sewing machine; 109 bag body suspender sewing machine; 110 flexible freight bag disengaging machine; a 111 circular track; 112 main body tooling; 113 bag bottom transfer machine; 114 a sling positioning device; 401 station box assembly; 402 station box; 403 a material returning frame; 404 material returning rods; 405 a first station box assembly; 406 a second station box assembly.

Detailed Description

In order to make the objects, aspects and advantages of the technical solution of the present utility model more clear, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiment of the present utility model. Unless otherwise indicated, terms used herein have the meaning common in the art. Like reference numerals in the drawings denote like parts.

Fig. 1 and 2 are schematic views showing a structure of a flexible container produced by an automatic flexible container production line according to the present utility model, wherein fig. 1 is a perspective view as a whole and fig. 2 is a partial perspective view from the bottom. The flexible freight bag mainly comprises a feeding hole 1, a hanging strip 2, a bag bottom 3 and a bag body 4, which can be made of PP materials. The feeding opening 1 and the bag body 4 are of hollow cylindrical structures, and the lower end of the feeding opening 1 is connected to the upper end of the bag body 4 to form an integrated hollow cylindrical structure. The lower end of the bag body 4 is closed by a circular bag bottom 3.

The number of the hanging strips 2 is two. The lower end parts of the two sides of each sling 2 are fixedly connected with the bag bottom 3, can be fixed along the diameter direction and form an included angle of 90 degrees, and are respectively reinforced and fixed by the bag bottom reinforcing blocks 8. The middle parts of both sides of each sling 2 are fixedly connected with the side surfaces of the bag body 4 respectively and extend along the axial direction of the bag body 4, and the middle parts of both sides of each sling 2 are fixedly reinforced with the bag body 4 through the bag body reinforcing blocks 6. The four lower ends of the two slings 2 are symmetrically arranged at the bag bottom 4 so that the four middle parts are evenly arranged at equal intervals around the bag body 4. The upper parts of the two hanging strips 2 are formed into an inverted U shape at the position near the outer side of the upper port of the feeding port 1, and a hanging handle belt 5 is arranged on the inverted U shape.

In addition, the outside of feed inlet 1 still sets up ribbon 9 for tie up feed inlet 1. A further reinforcing band 7 may be provided on the outer side of the overlapping portion of the strap 2, the bag body 4 and the bag body reinforcing block 6 to further enhance the coupling strength. A label 10 can be arranged on the outer side of the bag body 4 to play a role in marking or warning. FIG. 1 illustrates some exemplary dimensions of a flexible container, but these dimensions are for reference only and are not limiting of the utility model.

When the flexible freight bag is used, the material is filled into the flexible freight bag through the upper opening of the feeding opening 1; then, the feeding port 1 is tied up through the binding belt 9 to realize sealing; the flexible freight bag can be lifted by the hanging belt 2, and particularly, the freight bag is lifted at the position of the hanging handle belt 5 for transferring operation. Because the strength of the hanging belt 2 and the bag body 4 is reliable, and the strength of the connecting part between the hanging belt and the bag body is reliable, safe transportation can be realized.

Fig. 3 shows a schematic view of the automatic flexible container production line of the present utility model, which mainly includes a sewing device 100, a detecting device 200, a folding device 300, a palletizing device 400, and a packing device 500. The sewing device 100 is used for assembling the parts such as a feed port 1, a hanging strip 2, a bag bottom 3, a bag body 4 and the like into a flexible container; the detection device 200 is used for detecting the flexible freight bags; the folding device 300 is used for folding the flexible freight bag into a rectangle; the palletizing device 400 is used for palletizing a plurality of flexible containers; the bagging apparatus 500 is used to bag a plurality of bulk bags.

The sewing device 100 mainly includes: a hanging strip sewing machine 101 for preprocessing the hanging strip 2, and sewing hanging strip 5, bag body reinforcing block 6, reinforcing band 7, bag bottom reinforcing block 8 and other parts thereon; a bag bottom blanking machine 102 for blanking the bag bottom 3; a strap bag bottom sewing machine 103 for sewing and connecting the prefabricated strap 2 with the bag bottom 3 to obtain a strap bag bottom assembly; a loading port blanking machine 104 for blanking the loading port 1 to the tool main body; the feed opening sewing machine 105 is used for hemming and sewing the feed opening 1 and the binding belt 9; a bag body blanking machine 106 for blanking the bag body 4 to the tool main body; the bag body feed port sewing machine 107 is used for sewing and connecting the feed port 1 with the bag body 4 to form a bag body feed port assembly; the bag body and bag bottom sewing machine 108 is used for sewing and connecting the bag body and bag bottom assembly and the bag body and bag bottom assembly, in particular to sewing and connecting the bag body and the bag bottom; a bag body sling sewing machine 109 for sewing and connecting the sling 2 with the bag body 4 to obtain a finished container bag; and a flexible container disengaging machine 110 for disengaging the sewn flexible container from the main body tool.

Fig. 4 shows a perspective view of the sewing device 100 of the flexible container automatic production line of the present utility model.

The sewing device 100 has a material transporting device including an endless track 111 and a main body tool 112 capable of circulating along the endless track 111. The upper side of the main body tooling 112 is a cylindrical supporting structure for sleeving and supporting thereon the cylindrical feeding port 1 provided by the feeding port blanking machine 104 and the cylindrical bag body 4 provided by the bag body blanking machine 106. The lower side of the main body tooling 112 is provided with a driving mechanism, which comprises a rotation driving mechanism (such as a gear set mechanism) for driving the main body tooling 112 to perform rotation motion, and a movement driving mechanism (such as a gear rack mechanism) for driving the main body tooling 112 to move along the annular track 111. The utility model is not limited to the specific form of the rotary drive mechanism and the mobile drive mechanism, and any drive mechanism capable of realizing the corresponding movement form falls into the protection scope of the utility model. In addition, the main body tooling 112 may include a plurality of tension sheets that can be expanded and contracted, and can be switched between a state of being far away from each other and a state of being close to each other by the electric push rod, so that the main body tooling 112 is switched between an expanded state and a contracted state, the main body tooling 112 has a larger diameter in the expanded state to tightly support the bag body and the feeding port thereon, and has a smaller diameter in the contracted state to release the tightening force, so as to facilitate separation of the flexible container. The number of body tooling 112 may be plural to process multiple bulk bags simultaneously.

The main body tooling 112 circularly moves along the annular track 111 and sequentially passes through five stations: the bag body and bottom sewing machine comprises a feeding opening blanking station A, a bag body blanking sewing station B, a bag body and bottom sewing station C, a bag body suspender sewing station D and a flexible freight bag separating station E. Fig. 4 shows five main body tools 112 at each station.

The upper part of the feeding hole blanking station A is provided with a feeding hole blanking machine 104 which is used for outputting materials from a scroll in a flattening state, switching the materials into a cylinder shape above the main body tooling 112 and sleeving the materials on the main body tooling 112, and cutting the materials with a preset length through a hot melting device to form the feeding hole 1. An air claw is arranged below the feeding hole blanking machine 104 and is used for pulling the feeding hole 1 from top to bottom to enable the feeding hole 1 to advance to a desired position. A feed port sewing machine 105 is arranged at the side of the station a. On the one hand, the feed port sewing machine 105 is capable of hemming the upper end edge of the feed port 1 supported on the main body tooling 112 (the term "hemming" in the present utility model means that the sewing portion is folded first and then the sewing thread is applied to improve the sewing strength; preferably, the hemming may be performed after being folded twice and then the sewing thread is applied); on the other hand, the feed opening sewing machine 105 can move from top to bottom for sewing the band 9 at a position in the middle of the feed opening 1. After hemming and binding are completed, the air claw pulls the stitched feed opening 1 downwards to a proper position of the main body tooling 112, so that the air claw is convenient to be in butt joint with the subsequent bag body 4. Then, the main body tooling 112 moves to the next station B.

At the bag body blanking sewing station B, a bag body blanking machine 106 is arranged above the bag body blanking sewing station B and is used for outputting materials from a scroll in a flattening state, switching the materials into a cylinder shape above a main body tool 112 and sleeving the materials on the main body tool 112, and cutting the materials with a preset length through a hot melting device to form the bag body 4. An air claw is provided below the bag body blanking machine 106 for pulling the bag body 4 from the top down to advance to a desired position. A bag body feed port sewing machine 107 is arranged on the side of the station B. The bag body upper feed opening sewing machine 107 can perform hemming sewing on the bag body 4 and the feed opening 1, so that the lower end edge of the bag body 4 is in sewing connection with the lower end edge of the feed opening 1. Then, the main body tooling 112 moves to the next station C.

And a bag bottom transferring machine 113 is arranged above the bag body blanking and sewing station C and is used for transferring the prefabricated bag bottom hanging strip assembly onto the main body tool 112. A bag body and bottom sewing machine 108 is arranged at the side of the station C. The bag body and bag bottom sewing machine 108 is capable of hemming the bag body 4 and the bag bottom 3 so that the upper end edge of the bag body 4 is sewn and connected with the outer peripheral edge of the bag bottom 3. Then, the main body tooling 112 moves to the next station D.

Fig. 4 also shows a strap sewing machine 101, a bag bottom blanking machine 102 and a strap bag bottom sewing machine 103 for the prefabricated bag bottom strap assembly, which are arranged linearly, outside the annular track 111. The strap sewing machine 101 is used for processing and sewing the entire strap 2, sewing the strap 2 with the bag body reinforcing block 6, the reinforcing band 7 and the bag bottom reinforcing block 8 by using a plurality of sewing machines, and sewing the strap 2 with the handle cloth 5. The bag bottom blanking machine 102 is used for blanking a round bag bottom 3 from a roll of material, which has an annular cutting tool. The strap bottom sewing machine 103 is used to stitch the strap 2 to the bottom 3, and in particular to stitch the pre-sewn bottom reinforcement piece 8 on the strap 2 to a predetermined location on the bottom 3, as shown in fig. 2, to obtain the bottom strap assembly described above.

At the bag body sling sewing station D, a sling positioning device 114 is provided for straightening down the naturally drooping sling so as to attach to the bag body 4. A bag body strap sewing machine 109 is provided on the side of the station D. The bag body strap sewing machine 109 sews the bag body 4 and the strap 2, and particularly sews the pre-sewn bag body reinforcing block 6 and the reinforcing tape 7 on the strap 2 at a predetermined position on the bag body 4 as shown in fig. 2, thereby completing the assembly of the flexible container. Then, the main body tooling 112 moves to the next station E.

At the flexible container separating station E, a flexible container separating machine 110, which may specifically be a movable air jaw structure, is disposed above the flexible container separating machine for separating the assembled flexible container from the main body tooling 112, the separated flexible container can be transferred to the downstream detecting device 200 for detection, and the main body tooling 112 will circulate back to the feeding port blanking station a for the next working cycle.

The sewing machine of each station A, B, C keeps the position constant during sewing, the main body tooling 112 drives the material supported on the main body tooling to rotate, so that 360-degree sewing is realized, and meanwhile, the sewing machines can also move in the vertical direction and the direction towards/away from the main body tooling 112 so as to adapt to the diameter and the height change of a sewing position. The sewing machine at the station D can move in the vertical direction to form a sewing portion with a certain height, for example, fig. 4 shows a bag body sling sewing machine 109 that can move along an oblique line along an oblique bracket, and by rotating the main body tooling 112, four sling sections on the outer side of the bag body 4 can be aligned with the bag body sling sewing machine 109 respectively, so as to complete sewing. The utility model is not limited to the specific type and structure of the sewing machine, and various existing, developed and future sewing machines, such as the automatic production line for flexible freight bags provided by the utility model, fall into the protection scope.

The inspection device 200 in the flexible container automatic production line is used for stretching the flexible container and turning out the inner surface of the flexible container out of the outer surface, so that operators can detect the inner surface and the outer surface of the flexible container visually or by using tools, and the flexible container with manufacturing defects can be found. The detection items may include: whether the flexible freight bag is broken (including inner side, outer side, bag bottom, hanging belt, etc.); whether the stitching is firm or not, and whether the relative positions of all parts of the flexible freight bag are correct or not; whether the stitching is complete and beautiful, and has the stitching defects of no seam leakage, thread off and the like. The inspection device 200 may have two stations, i.e., two bulk bags may be inspected simultaneously; it is also possible to have a single station, i.e. to detect one flexible pouch at the same time. The inspected flexible freight bag is transported to a downstream folding device.

The folding device 300 in the flexible freight bag automatic production line is used for leveling the flexible freight bag and folding for many times to form a flat rectangle, so that the flexible freight bag is convenient to store and transport. In one embodiment, the folding device 300 may include a conveyor belt for continuously transporting flexible containers, and stations for pre-pressing, folding, pushing, etc. arranged in sequence along the conveyor belt. The prepressing conveying station is used for leveling the originally scattered flexible freight bags, so that the follow-up folding work is simple and accurate. In particular, the pre-pressing transfer station may be provided with two conveyor belts arranged opposite each other, the gap between the conveyor belts being gradually narrowed in the forward direction for flattening the flexible container during the transfer. The folding station includes a plurality of (e.g., five) flaps for folding a predetermined portion of the flexible container over an angle (e.g., approximately 180 degrees) along a predetermined fold line, for example, can be folded side-to-side, front-to-back, or diagonally. The turnover plate can be driven by the air cylinder to turn over a certain angle to drive the part of the flexible freight bag originally loaded on the turnover plate to turn over. The pushing station pushes the folded flexible freight bags outwards. The pushing station may be provided with a pushing platen which is driven by the air cylinder to move in a direction perpendicular to the conveyor belt to push the flexible container off the conveyor belt. The folding device can continuously and automatically fold a plurality of flexible freight bags, and compared with the traditional folding mode, the folding device remarkably improves the working efficiency, for example, can output a folded flexible freight bag every 20 seconds.

Palletizing apparatus 400 in a flexible container automated production line is used to place a defined number (e.g., 10) of flexible containers in a stack, aligned with one another. In one embodiment, palletizing apparatus 400, as shown in fig. 5, may employ a liftable station box assembly 401 comprising a plurality (e.g., 10) of vertically aligned station boxes 402. The station box assembly is configured to drop stepwise from top to bottom, with one station box being aligned with the push station of the folding device for receiving the folded flexible container for each step. After all of the station cartridges of the station cartridge assembly have received the bulk bag, the ejector frame 403 is operable to move. The reject frame 403 has a plurality of reject bars 404 parallel to each other corresponding to the number of station cartridges, and each reject bar 404 is insertable into the corresponding station cartridge 402 to push out the flexible freight bag therein horizontally. When the material returning frame 403 moves, all the material returning rods 404 are simultaneously inserted into the respective station boxes 402, and all the previously stored flexible bags are synchronously pushed out to a downstream packing device, so that stacking of a plurality of flexible bags is realized. In a preferred embodiment, and as further shown in fig. 5, the palletizer may employ a dual station mode, i.e., two identical station magazine assemblies, which alternately receive and eject flexible containers to achieve continuous operation. When the first station box assembly 405 descends to store the flexible freight bags step by step at the first horizontal position, the second station box assembly 406 performs pushing-out work at the lower position at the second horizontal position, and then moves upwards to the upper position for standby; after the first station box component 405 completes storage, it translates to the second horizontal position to push out, and meanwhile, the second station box component 406 translates to the first horizontal position to store, so as to realize uninterrupted operation in a circulating and reciprocating manner.

The packing device 500 in the flexible container automatic production line compresses and packs the stacked plurality of flexible containers, wraps the packaging material on the outside thereof, and then delivers the packaged flexible containers to the factory. In the packing device, the stacked plurality of flexible containers can be pressed to a predetermined height size by a pressing device. In addition, the flexible freight bags can be wrapped by adopting U-shaped upper wrapping cloth and U-shaped lower wrapping cloth from the upper side and the lower side respectively, so that the flexible freight bags are protected; thereafter, the upper and lower cloths and the pouch are fastened together by wrapping a fastener, such as a wrapping strip, around the outside of the upper and lower cloths and the pouch using a packer. The packing device can adopt the roller belt to continuously transmit the flexible freight bags, and can also adopt the roller tunnel structure to limit the position of the flexible freight bags in the process of transmitting the flexible freight bags. The roller tunnel structure is provided with roller belt devices on the upper, left and right surfaces, and forms a rectangular section tunnel with the roller belt at the lower side, so that the flexible freight bag can be limited and prevented from being scattered. In the packing device, continuous packing of the flexible freight bags can be realized by matching parameters such as the feeding speed of the upper wrapping cloth, the feeding speed of the lower wrapping cloth, the transmission speed of the roller belt, the action beat of the compacting device and the like.

The exemplary embodiments of the present utility model have been described in detail herein with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various changes and modifications may be made to the specific embodiments described above without departing from the spirit of the utility model, and various technical features and structures of the present utility model may be variously combined without departing from the scope of the present utility model, which is defined by the appended claims.

Claims

1. The automatic production line for the flexible freight bags is characterized by comprising a sewing device, wherein the sewing device comprises an annular rail and a main body tool, and the main body tool can circularly move on the annular rail and sequentially pass through a feeding port blanking station (A), a bag body blanking sewing station (B), a bag body bag bottom sewing station (C), a bag body suspender sewing station (D) and a flexible freight bag separating station (E);

a feeding hole blanking station (A) is provided with a feeding hole blanking machine which provides a feeding hole and sleeves the feeding hole to the main body tool;

a bag body blanking machine is arranged at a bag body blanking sewing station (B) and used for providing a bag body and sleeving the bag body to a main body tool, and a bag body feeding port sewing machine is also arranged and used for sewing the bag body and the feeding port;

a bag body and bag bottom sewing machine is arranged at a bag body and bag bottom sewing station (C) and is used for sewing the bag body and the bag bottom;

a bag body suspender sewing machine is arranged at a bag body suspender sewing station (D) and is used for sewing the bag body and the suspender to form a flexible freight bag;

and (3) at a flexible freight bag separating station (E), a flexible freight bag separating machine is arranged, the flexible freight bag is separated from a main body tool, and the main body tool is moved to a feeding hole blanking station (A).

2. The flexible container automatic production line according to claim 1, wherein,

the main body fixture comprises a plurality of main body fixtures.

3. The flexible container automatic production line according to claim 1, wherein,

and a feed port blanking station (A) is further provided with a feed port sewing machine which is used for hemming and sewing the upper end edge of the feed port and sewing the binding belt to the feed port.

4. The flexible container automatic production line according to claim 1, wherein,

and (3) at a bag body blanking sewing station (B), a bag body material inlet sewing machine hemms the lower end edge of the bag body and the lower end edge of the material inlet.

5. The flexible container automatic production line according to claim 1, wherein,

a bag bottom sewing station (C) of the bag body is arranged, and the upper end edge of the bag body and the edge of the bag bottom in the bag bottom hanging strip assembly which is sewn in advance are sewn by a bag bottom sewing machine;

the bag bottom hanging belt assembly comprises a bag bottom and a hanging belt sewn on the bag bottom, wherein a bag body reinforcing block and a bag bottom reinforcing block are sewn on the hanging belt in advance, the bag body reinforcing block is used for being sewn to the bag body, and the bag bottom reinforcing block is used for being sewn to the bag bottom.

6. The flexible container automatic production line according to claim 5, wherein,

in the bag bottom suspender assembly, a reinforcing belt and a hanging handle cloth are sewn in advance by the suspenders.

7. The flexible container automatic production line according to claim 5, wherein,

and (3) a bag bottom transferring machine is further arranged at the bag bottom sewing station (C) of the bag body and is used for transferring the pre-sewn bag bottom suspender assembly to the main body tool.

8. The flexible container automatic production line according to claim 1, wherein,

and a hanging strip positioning device is arranged at the bag body hanging strip sewing station (D) and used for straightening down the hanging strip which naturally sags so as to be attached to the bag body.

9. The flexible container automatic production line according to claim 1, wherein,

the main body tool can perform rotary motion.

10. The flexible container automatic production line according to claim 1, wherein,

the upper side of main part frock is cylindrical bearing structure, and rotation drive structure and removal actuating mechanism are installed to the downside, and rotation drive mechanism drive main part frock gyration motion, and removal actuating mechanism drive main part frock moves along annular track.

11. The flexible container automatic production line according to claim 1, wherein,

the main body tooling can be switched between an open state and a contracted state, the diameter of the main body tooling is enlarged in the open state, the bag body and the feeding port are tightly supported, and the diameter of the main body tooling is reduced in the contracted state, so that the tightening force is released, and the flexible freight bags are conveniently separated.

12. The flexible container automatic production line according to claim 11, wherein,

the main body tool comprises a plurality of tension sheets which can be expanded and contracted, and the tension sheets can be switched between a state of being far away from each other and a state of being close to each other through the electric push rod, so that the main body tool can be switched between the expanded state and the contracted state.

13. The flexible container automatic production line according to claim 1, further comprising:

and the detection device is used for stretching the flexible freight bag, so that operators can visually or detect the inner surface and the outer surface of the flexible freight bag by using tools.

14. The flexible container automatic production line according to claim 1, further comprising:

the folding device is used for flatly beating the flexible freight bag and folding the flexible freight bag for a plurality of times;

the folding device comprises a conveying belt, and a pre-pressing conveying station, a folding station and a pushing station which are sequentially arranged along the conveying belt.

15. The flexible container automatic production line according to claim 12, further comprising:

the stacking device is used for stacking a plurality of folded flexible containers;

the stacking device comprises a lifting station box assembly, wherein the lifting station box assembly comprises a plurality of station boxes aligned in the vertical direction, the station box assembly is configured to gradually fall from top to bottom, and one station box can be aligned with a pushing station of the folding device for receiving a flexible container in one step;

the palletizing device further includes a plurality of ejector pins translatable together, which are simultaneously inserted into the plurality of station boxes, to simultaneously eject the plurality of flexible containers in a stacked state.

16. The flexible container automatic production line according to claim 15, wherein,

the palletizing device comprises two liftable station box assemblies which are alternately used for receiving and pushing out the flexible freight bags.

17. The flexible container automatic production line according to claim 16, further comprising:

and the packing device is used for compressing the plurality of flexible freight bags and coating upper wrapping cloth and lower wrapping cloth on the outer sides of the flexible freight bags.

18. A flexible container, characterized in that it is manufactured by the flexible container automatic production line according to any one of claims 1 to 17.