CN216001611U - Four-layer bag making device - Google Patents

Abstract

The utility model discloses a four-layer bag making device, which comprises a composite roller set and a heat sealing assembly, wherein the feeding side of the composite roller set is provided with an inner membrane discharging assembly and an outer membrane discharging assembly, the composite roller set comprises a composite compression roller, a folding part is arranged between the inner membrane discharging assembly and the composite roller set, the folding part is provided with two folding edges, and the two folding edges are intersected to form a V shape; the outer membrane discharging assembly and the composite roller set are sequentially provided with a dividing piece and two guide assemblies, the dividing piece divides the outer membrane into two parts, and the two guide assemblies are used for guiding the divided outer membrane to the two sides of the inner membrane between the turnover piece and the composite roller set. This four-layer bag system bag device utilizes a book piece to turn over the inner membrance and turns over, divides into two with the adventitia simultaneously through the partition member, is guided to the both sides of turning over an inner membrance by the guide subassembly, turns over to carry out the heat-seal after the inner membrance passes through the repressing roller group simultaneously with turning over, realizes the preparation of four-layer bag, reduces the process, raises the efficiency, and the cost is reduced has guaranteed the packing precision and the quality of product.

Description

Four-layer bag making device

Technical Field

The utility model belongs to the technical field of the system bag technique and specifically relates to a four-layer bag making device is related to.

Background

The bag making machine is a machine for making various plastic packaging bags or packaging bags made of other materials, the processing range of the bag making machine is various plastic packaging bags or packaging bags made of other materials with different sizes and thicknesses, and the plastic packaging bags are widely used in daily life, so the plastic packaging bags belong to a large number of consumables and need to be produced in large scale in batches.

In order to improve the packaging quality of the packaging bag and prevent the packaging bag from being broken and damaged, a four-layer bag is generally used, and the four-layer bag utilizes a high-strength outer layer to protect an inner layer made of high-toughness material paper, so that safe packaging and conveying are realized. Most of products manufactured by the bag making machine in the prior art are double-layer bags, so that the production of the four-layer bags needs to be realized through a plurality of processes and equipment, the production efficiency is reduced, and the production cost is increased due to the increase of production equipment; in addition, the production process is carried out in different batches, so that the precision of the prepared four-layer bag product is reduced, and the packaging quality is influenced.

Therefore, it is necessary to provide a four-layer bag making apparatus.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide an improve production efficiency, reduction in production cost and guarantee product quality's four-layer bag making device.

In order to realize the technical effects, the utility model adopts the technical scheme that: a four-layer bag making device comprises a composite roller set and a heat-sealing assembly, wherein an inner membrane discharging assembly and an outer membrane discharging assembly are arranged on the feeding side of the composite roller set, the composite roller set comprises two composite compression rollers which are parallel to each other in axial lead and are arranged close to each other, a turnover piece is arranged between the inner membrane discharging assembly and the composite roller set, the turnover piece is provided with two turnover edges for simultaneously winding an inner membrane, and the two turnover edges are intersected to form a V shape back to the composite roller set; the adventitia blowing subassembly with set gradually along the direction of transmission of adventitia between the compound roller set and cut apart into two parts with the adventitia and cut apart piece and two guide assembly, two guide assembly is used for guiding the adventitia after cutting apart extremely turn over a piece with the both sides of intima between the compound roller set.

When the four-layer bag making device in the technical scheme is used, the inner membrane discharging assembly and the outer membrane discharging assembly on the feeding side of the composite roller set simultaneously provide an inner membrane and an outer membrane respectively, and the inner membrane is wound on two folding edges of the folding pieces when passing through the folding pieces, so that the inner membrane is folded and passes through two composite compression rollers of the composite roller set; meanwhile, when the outer membrane passes through the dividing piece, the dividing piece divides the outer membrane into two outer membrane parts, the sum of the widths of the two outer membrane parts formed after division is equal to the width of the outer membrane before division, the two divided outer membrane parts are guided to the two sides of the inner membrane between the composite roller set and the turning piece by two guide assemblies respectively, namely the two outer membrane parts are positioned on the two sides of the turned inner membrane part, the outer membrane part, the turned inner membrane part and the outer membrane part which are distributed in sequence are extruded by two composite press rollers, and then the extruded membrane material is subjected to heat sealing treatment by the heat sealing assembly, so that a four-layer bag is formed. This four-layer bag system bag device provides inner membrance and adventitia simultaneously, turns over the intima, cuts apart the back to the adventitia simultaneously and guides the outer membrane of two divisions to the both sides of turning over the intima, then extrudees and heat-seal treatment, need not the preparation of multichannel equipment process, has not only improved production efficiency, has reduced manufacturing cost moreover, and because four layers of bags are produced on single device, consequently guaranteed the product precision, and then improved packaging quality.

Preferably, a folding roller is arranged between the folding piece and the composite roller set, the included angle between the axis of the folding roller and the included angle between the two folding edges is equal, the axis of the folding roller is intersected with the plane where the two folding edges are located, and the folding roller is arranged at the intersection of the two folding edges in a close proximity mode.

Through adopting above-mentioned technical scheme, utilize the coincide roller conveniently will turn over the both sides of rolling over the back inner membrance and close together, prevent to turn over and turn over the inner membrance and appear relative slip between its both sides wall in transmission process, so, be favorable to guaranteeing the precision that the inner membrance turned over and was handled before the heat-seal.

Preferably, the laminating roller with be provided with the laminating roller between the compound roller set, the axial lead of laminating roller with the axial lead of laminating roller is parallel, the laminating roller with the laminating roller branch is located the both sides of the transmission path of inner membrance after the coincide.

By adopting the technical scheme, the laminating roller and the laminating roller can extrude the turnover inner film from two sides of the turnover inner film, the two sides of the turnover inner film are close together, the turnover quality is guaranteed, certain tension is kept in the transmission process of the turnover inner film, and stable transmission is facilitated.

Preferably, a laminating roller is arranged between the laminating roller and the composite roller set, and the laminating roller are respectively arranged on two sides of the transmission path of the inner film after lamination.

By adopting the technical scheme, the turnover inner film is extruded again by the aid of the composite pressing roller, so that the two sides of the turnover inner film are ensured to be close to each other, and meanwhile, the turnover inner film keeps certain transmission tension, and transmission quality of the turnover inner film is ensured.

Preferably, a prepressing roller is arranged between the turnover piece and the inner film discharging assembly, the axial lead of the prepressing roller is equal to the included angle of the two turnover edges and is parallel to the plane where the two turnover edges are located, and the prepressing roller and the turnover piece are respectively arranged on two sides of the inner film transmission path before lamination.

By adopting the technical scheme, the pre-pressing roller and the turnover piece are utilized to extrude the inner film before turnover, so that the inner film can smoothly pass through the two turnover edges of the turnover piece while tension transmission of the inner film is ensured, and turnover is finished.

Preferably, an inner membrane traction roller is arranged between the turnover piece and the inner membrane emptying assembly and is used for being connected with an inner membrane tractor driving the inner membrane traction roller to rotate around the axis line of the inner membrane traction roller.

By adopting the technical scheme, the inner membrane tractor is utilized to drive the inner membrane traction roller to rotate around the axis line of the inner membrane traction roller, so that the inner membrane is driven to be transmitted to the turnover piece from the inner membrane discharging assembly to be turned over.

Preferably, the dividing surface of the dividing piece is perpendicular to the plane where the two turned edges are located; two the guide assembly all includes the adventitia that sets gradually along cutting apart back adventitia transmission path and transfers to piece and adventitia guide roll, the adventitia transfers to the piece and has the confession and cuts apart back adventitia around the accent that establishes to the limit, transfer to the limit with the contained angle of the cut apart face of piece is 45, the axial lead of adventitia guide roll with the axial lead of compound compression roller is parallel.

By adopting the technical scheme, after the outer membrane is divided into two outer membrane layers by the dividing piece, the two outer membrane layers are transmitted to the two sides of the inner membrane layer which is turned over before compounding by the guide rollers through the guide rollers and by utilizing the guide rollers to guide the transmission direction of the outer membrane layers.

Preferably, the outer film guide rollers are provided in plurality, and the plurality of outer film guide rollers include an inner guide roller 7ba disposed inside the divided outer film transport path and an outer guide roller 7bb disposed outside the divided outer film transport path.

By adopting the technical scheme, the number of the outer membrane guide rollers is increased, and the guide inner rollers and the guide outer rollers are used for respectively guiding and extruding the two sides of the segmented outer membrane, so that the outer membrane has certain transmission pressure, and stable transmission is ensured.

Preferably, an outer membrane traction roller is arranged between the dividing piece and the outer membrane feeding assembly and is used for connecting and driving an outer membrane tractor rotating around the axis line of the outer membrane traction roller.

By adopting the technical scheme, the outer membrane tractor is utilized to drive the outer membrane traction roller to rotate around the axial lead of the outer membrane traction roller, so that the outer membrane traction roller acts on the outer membrane, and the outer membrane provided by the outer membrane emptying assembly is transmitted to the cutting piece to be cut.

Preferably, the heat-seal assembly comprises a transverse heat-seal unit and a longitudinal heat-seal unit which are sequentially arranged, the transverse heat-seal unit is provided with two transverse heat-seal units in pairs and is respectively arranged at two sides of the composite rear film material, the two transverse heat-seal units respectively comprise two transverse heat-seal strips which are respectively arranged at two sides of the composite rear film material transmission path, the transverse heat-seal strips extend along the width direction perpendicular to the film material, the longitudinal heat-seal unit comprises two longitudinal heat-seal strips which are respectively arranged at two sides of the composite rear film material transmission path, and the longitudinal heat-seal strips extend along the width direction parallel to the film material.

By adopting the technical scheme, the transverse heat-sealing unit and the longitudinal heat-sealing unit are matched to operate, so that the outer layer film, the folded inner film and the outer layer film which are distributed in the way are bonded together in a heat-sealing manner, and a four-layer bag is formed. In the transverse heat-sealing unit, the two transverse heat-sealing strips move close to the film material, the side edges of the film material are subjected to heat sealing through heating, in the longitudinal heat-sealing unit, the two longitudinal heat-sealing strips move close to the film material, the heat sealing is carried out along the side edge direction perpendicular to the film material, and four layers of bags are formed.

Preferably, two of the transverse heat-sealing units are arranged on the feeding side of the longitudinal heat-sealing unit; and in the transverse heat sealing unit adjacent to the opening of the turnover inner film, a long-strip-shaped spacer is arranged between the two transverse heat sealing strips, and the spacer extends along the length direction parallel to the two transverse heat sealing strips and is arranged between two side walls of the turnover inner film.

Through adopting above-mentioned technical scheme, set up the spacer between the both sides wall of turning over the inner membrance, the both sides wall heat-seal that turns over the inner membrance in the heat-seal process is glued together, so, makes the four-layer bag that makes have the opening, conveniently packs.

Preferably, horizontal heat-seal unit with between the vertical heat-seal unit and horizontal heat-seal unit with it draws the pair roller to be provided with the heat-seal between the compound roller set, the heat-seal draws the pair roller and includes the heat-seal carry over pinch rolls that two roll surfaces laminated mutually, two it is connected with its heat-seal tractor around self axial lead pivoted to have at least one among the heat-seal carry over pinch rolls.

Through adopting above-mentioned technical scheme, utilize heat-seal tractor drive heat-seal carry over pinch rolls to rotate around its self axial lead, guarantee that the transmission pressure of coating material keeps unanimous before the heat-seal, realize the stable transport of coating material.

Preferably, the discharge side of heat-seal subassembly is provided with the cooling unit, the cooling unit includes two cooling strips, two the cooling strip is divided and is located the both sides of heat-seal back film material transmission path and along being on a parallel with the length direction of vertical heat-seal strip extends.

Through adopting above-mentioned technical scheme, when utilizing between two cooling strips of membrane material process cooling unit after the heat-seal, the membrane material removal is pressed close to the cooling strip, and on the one hand is cooled down the processing to the membrane material of heat-seal, increases the adhesive strength of four layers of bags behind the shaping, improves product packaging quality, and on the other hand, the cooling strip is filled in on the membrane material, can prevent the membrane material fold, flattens the membrane material, guarantees the planarization on wrapping bag surface.

Preferably, the cooling units are at least two and distributed along the transmission path of the heat-sealed film material.

Through adopting above-mentioned technical scheme, utilize a plurality of cooling units to realize having guaranteed the adhesive strength of four layers of bags to the temperature reduction many times of heat-seal back membrane material to get rid of the fold that produces when the heat-seal, guarantee the planarization on four layers of bags surfaces.

Preferably, the discharge side of the heat-seal assembly is provided with a color marker, and the color marker is arranged on one side of the film material transmission path after heat sealing.

By adopting the technical scheme, the film material after heat sealing (namely the four-layer bag after forming) can be marked by using the color marker, and the four-layer bag with the mark can be separated one by one in the subsequent treatment process.

Preferably, a cutter is arranged on the discharge side of the color marker and used for cutting the heat-sealed film material.

Through adopting above-mentioned technical scheme, utilize the cutterbar can part four layers of bags that the mark was handled with the color mark one by one, alleviate workman's work load, improve production efficiency.

To sum up, the utility model discloses four layers of bag system bag devices compares with prior art, utilizes a piece of turning over to turn over the intima, falls into two with the adventitia simultaneously through cutting apart the piece, is guided to the both sides of turning over an intima by the guide subassembly, and the intima that turns over with turns over carries out the heat-seal simultaneously through repressing the roller set after, realizes the preparation of four layers of bags, reduces the process, raises the efficiency, and the cost is reduced, has guaranteed the packing precision and the quality of product.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of another view angle of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 1;

FIG. 5 is an enlarged view of section C of FIG. 1;

FIG. 6 is an enlarged view of section D of FIG. 2;

FIG. 7 is a schematic view of a part of the structure of the feeding side of the composite roller set of the present invention;

FIG. 8 is an enlarged view of section E of FIG. 7;

fig. 9 is a partial schematic structural view of another view angle of the feed side of the composite roller set of the present invention;

FIG. 10 is a schematic structural view of the inner membrane discharge assembly of the present invention;

FIG. 11 is a schematic structural view of the outer membrane discharge assembly of the present invention;

fig. 12 is a schematic view of a four-layered bag made according to the present invention;

in the figure: 1. a composite roller set, 1a composite press roller, 2 heat-sealing components, 3 inner film discharging components, 3a inner film discharging roller, 3b inner film tension roller, 3c inner film reversing piece, 4 outer film discharging components, 4a outer film discharging roller, 4b outer film fixed tension roller, 4c outer film swinging tension roller, 4d outer film swinging arm, 4e outer film reversing piece, 5 folding piece, 5a folding edge, 6 dividing piece, 7 guiding components, 7a outer film reversing piece, 7b outer film guiding roller, 7ba. guiding inner roller, 7b guiding outer roller, 8 folding roller, 9 folding roller, 10 laminating press roller, 11 prepressing roller, 12 inner film traction roller, 13 outer film traction roller, 14 transverse heat-sealing unit, 14a transverse heat-sealing strip, 15 longitudinal heat-sealing unit, 15a longitudinal strip, 16 parting sheet, 17 heat-sealing traction roller, 17a heat-sealing traction roller, 18. the device comprises a cooling unit, 18a cooling strips, 19 color markers, 20 cutters, 21 edge cutting blades, 22 opening cutter blocks, 23 inner films, 24 outer films, 25 guide double rollers, 25a film material guide rollers, 26 discharge traction double rollers, 26a discharge traction roller, 27 outer film pre-separation rollers and 28 inner film pre-stacking rollers.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1-11, the utility model discloses a four-layer bag system bag device includes compound roller set 1 and heat-seal subassembly 2, the feed side of compound roller set 1 is provided with inner membrance blowing subassembly 3 and adventitia blowing subassembly 4, compound roller set 1 includes the compound compression roller 1a that two axial lead parallels and next-door neighbour set up, the axial lead level of compound compression roller 5a sets up, be provided with a book piece 5 between inner membrance blowing subassembly 3 and the compound roller set 1, it has two supplies the inner membrance to wind the turn-ups 5a of establishing simultaneously to turn over a book piece 5, two crossing V-arrangements (as shown in fig. 9) that form back to compound roller set 1 of turning-ups 5a, it cuts apart into the adventitia piece 6 (as shown in fig. 8) and two guide assembly 7 of two parts to set gradually the adventitia with the adventitia transmission direction of adventitia between adventitia blowing subassembly 4 and the compound roller set up in proper order, it is the blade to cut apart adventitia guide to turn over the both sides between a piece 5 and the compound roller set up the intima 1 for two guide assembly 7 after will cutting apart.

The utility model discloses a four layers of bag system bag device moves, provide inner membrance 23 and adventitia 24 respectively simultaneously by inner membrance blowing subassembly 3 and adventitia blowing subassembly 4, wherein inner membrance 23 is when turning over a 5 through turning over, turn over the both sides of a 5 and turn over hem 5a and compare in a bit, this point is located the central point on the inner membrance 23 width direction, and inner membrance 23 is simultaneously around establishing through two turning over hem 5a, turn over the back at two turning over hem 5a respectively, form and turn over a back inner membrance, through between two compound compression rollers 1a of compound roller set 1; meanwhile, after the outer membrane 24 output by the outer membrane feeding assembly 4 passes through the dividing piece 6 (blade), the outer membrane is divided into two outer membrane layers by the dividing piece 6, and the sum of the widths of the two outer membrane layers is equal to the width of the outer membrane 24 before division; the two outer layer films are respectively transmitted to the two sides of the turnover inner film on the feeding side of the composite roller set 1 through the two guide assemblies 7 and then enter between the two composite pressing rollers 1a, at the moment, a layer of outer layer film, the turnover inner film and the other side outer layer film are sequentially arranged between the two composite pressing rollers 1a from top to bottom, and then the outer layer film and the turnover inner film which are attached together are subjected to heat sealing through the heat sealing assembly 2, so that the outer layer film and the turnover inner film are bonded together to form a four-layer bag.

After adopting above-mentioned mode, only need single equipment can turn over inner membrance 23 simultaneously, adventitia 24 cuts apart, and will turn over the inner membrance after rolling over and the adventitia laminating after cutting apart and carry out the heat-seal together, form four layers of bags, not only reduced required process and device quantity, be favorable to improving work efficiency reduction in production cost, then four layers of bags produce on single equipment, inner membrance 23 and adventitia 24 are as raw materials for production, just handle simultaneously in same batch, guaranteed four layers of bag product precision that make, and then improved the packaging quality of product.

As shown in fig. 7 and 9, a folding roller 8, a laminating roller 9 and a repressing roller 10 are sequentially arranged between the turnover part 5 and the composite roller group 1 along the transmission path of the inner film 23, the axial lines of the folding roller 8, the laminating roller 9 and the repressing roller 10 are all parallel to the axial line of the composite pressing roller 1a, and the folding roller 8 is closely arranged at the intersection of two turnover edges 5 a; the laminating roller 8 and the laminating roller 10 are arranged on one side of the transmission path of the laminated inner film, and the laminating roller 9 is arranged on the other side of the transmission path of the laminated inner film; an inner film pre-laminating roller 28 and a pre-pressing roller 11 are sequentially arranged between the folding piece 5 and the inner film discharging assembly 3 along the transmission path of the inner film 23, the axial line of the inner film pre-laminating roller 28 and the axial line of the pre-pressing roller 11 both extend along the vertical direction, the inner film pre-laminating roller 28 is arranged on one side of the inner film transmission path before folding, which is adjacent to the folding piece 5, and the pre-pressing roller 11 is arranged on one side of the inner film transmission path before folding, which is opposite to the folding piece 5.

By adopting the design, the conveying direction of the inner film 23 is guided by the inner film pre-overlapping roller 28, and the inner film 23 is extruded by matching with the pre-pressing roller 11, so that the inner film 23 keeps certain tension, and the inner film 23 is conveniently and stably conveyed before being turned over; in addition, the prepressing roller 11 can tightly abut the inner film 23 on the turnover part 5 to enable the inner film to smoothly pass through two turnover edges 5a of the turnover part 5, so that the inner film 23 is turned over, then two side walls of the turnover inner film are tightly abutted together by utilizing a laminating roller 8 which is arranged close to the turnover part 5 to ensure stable transmission of the turnover inner film, and then two sides of the turnover inner film are extruded by matching with a laminating roller 9 and a repressing roller 10, so that the two side walls of the turnover inner film are tightly attached together, the turnover inner film has certain tension, stable transmission of the turnover inner film is ensured, and the manufacturing quality of the four-layer bag is improved.

As shown in figure 7, a traction roller 12 is arranged between the inner film pre-overlapping roller 28 and the inner film emptying assembly 3, and the inner film traction roller 12 is used for connecting an inner film tractor for driving the inner film tractor to rotate around the axis line of the inner film tractor.

When the equipment is used, the inner membrane traction roller 12 is connected with an inner membrane tractor, and the inner membrane traction roller 12 is driven by the inner membrane tractor to rotate around the axis line of the inner membrane traction roller to act on the inner membrane 23 to drive the inner membrane 23 to carry out transmission.

As shown in fig. 7 and 9, the dividing plane of the dividing piece 6 is perpendicular to the plane of the two turned edges 5 a; the two guide assemblies 7 respectively comprise an outer membrane direction adjusting piece 7a and an outer membrane guide roller 7b which are sequentially arranged along the transmission path of the divided outer membrane, the outer membrane direction adjusting piece 7a is provided with a direction adjusting side for winding the divided outer membrane, the included angle between the direction adjusting side and the dividing surface of the dividing piece 6 is 45 degrees, and the axial lead of the outer membrane guide roller 7b is parallel to the axial lead of the composite compression roller; the axis of the outer film guide roller 7b is parallel to the axis of the composite press roller 1a, a plurality of outer film guide rollers 7b are arranged, and the outer film guide rollers 7b comprise an inner guide roller 7ba arranged on the inner side of the split outer film transmission path and an outer guide roller 7bb arranged on the outer side; an outer film drawing roller 13 is arranged between the dividing piece 6 and the outer film feeding assembly, and the outer film drawing roller 13 is used for connecting an outer film tractor for driving the outer film drawing roller to rotate around the axis line of the outer film drawing roller; an outer film pre-separation roller 27 is arranged between the outer film traction roller 13 and the cutting piece 6, and the outer film pre-separation roller 27 is closely adjacent to the cutting edge of the cutting piece 6. The axis of the outer film drawing roll 13 and the axis of the outer film pre-separation roll 27 both extend in the horizontal direction.

When the device is used, the outer membrane tractor is connected with the outer membrane traction roller 13 to drive the outer membrane traction roller 13 to rotate around the axis of the outer membrane traction roller 13, the outer membrane 4 on the outer membrane emptying component 4 is transmitted to the outer membrane pre-separating roller 27, and the outer membrane 24 contacts with the cutting edge of the cutting piece 6 after passing through the outer membrane pre-separating roller 27, so that the outer membrane 24 is divided into two outer membrane layers. The outer film is wound on the direction adjusting edge of the outer film direction adjusting piece 7a, so that the outer film is transmitted along the vertical direction and then sequentially transmitted to the space between the two composite press rollers 1a of the composite roller set 1 through the outer film guide rollers 7. In the outer membrane guide roll 7, the guide inner roll 7ba and the guide outer roll 7bb are respectively abutted against the two sides of the outer membrane, so that the divided outer membrane keeps certain tension, the outer membrane is conveniently and stably transmitted to the composite roll set 1, the inner membrane is conveniently turned over for heat sealing, and a four-layer bag is formed.

As shown in fig. 1, 2, 4, 5 and 6, the heat-seal assembly 2 includes a transverse heat-seal unit 14 and a longitudinal heat-seal unit 15, which are arranged in this order along the film transport path; the two transverse heat-sealing units 14 are arranged in pairs and are respectively arranged on two sides of the composite film material, each transverse heat-sealing unit 14 comprises two transverse heat-sealing strips 14a which are respectively arranged on two sides of a transmission path of the composite film material, the transverse heat-sealing strips 14a extend along the width direction vertical to the film material, the longitudinal heat-sealing unit 15 comprises two longitudinal heat-sealing strips 15a which are respectively arranged on two sides of the transmission path of the composite film material, and the longitudinal heat-sealing strips 15a extend along the width direction parallel to the film material; the longitudinal heat-seal units 15 are provided in three, and are arranged side by side along the film material transfer path.

After the folded inner film and the two outer films pass through the compound roller set 1, firstly, two lateral heat sealing units 14 carry out heat sealing on two side edges of the film material, two lateral heat sealing strips 14a in the lateral heat sealing units 14 are close to each other and contact and heat two side walls of the film material, so that the folded inner film and the two outer films in the film material are bonded together after being heated; then, through the three longitudinal heat sealing units 15, the two longitudinal heat sealing strips 15 in the longitudinal heat sealing units 15 move close to each other and are attached to the film material, and the folded inner film and the two outer films in the film material are heated for multiple times along the direction perpendicular to the side edge of the film material, so that the folded inner film and the two outer films form a closed frame-shaped heat sealing area, and the four-layer bag is manufactured.

Two transverse heat-seal units 14 are arranged on the feed side of the longitudinal heat-seal unit 15; and the transverse heat sealing unit 14 is adjacent to the opening of the turnover inner film, a strip-shaped spacer 16 is arranged between the two transverse heat sealing strips 14a, and the spacer 16 extends along the length direction parallel to the two transverse heat sealing strips 14a and is arranged between the two side walls of the turnover inner film.

When the heat-seal treatment is performed by the transverse heat-seal unit 14, the two side walls of the folded inner film can be prevented from being bonded together by heat by the spacer 16 provided at the opening of the folded inner film and between the two transverse heat-seal bars 14a, and thus, a formed four-layer bag is ensured in which one side has an opening formed by folding the inner film 23 and remaining, as shown in fig. 12.

As shown in fig. 2, 7 and 9, a heat-sealing drawing double roller 17 is arranged between the transverse heat-sealing unit 14 and the longitudinal heat-sealing unit 15, and between the transverse heat-sealing unit 14 and the compound roller set 1, the heat-sealing drawing double roller 17 comprises two heat-sealing drawing rollers 17a with the roller surfaces attached, and at least one of the two heat-sealing drawing rollers 17a is connected with a heat-sealing puller for driving the heat-sealing drawing roller to rotate around the axis line of the heat-sealing drawing roller.

After the membrane material passes through compound roller set 1, utilize heat-seal tractor drive heat-seal carry over pinch rolls 17a to rotate around its axial lead and set up for two heat-seal carry over pinch rolls 17a act on the both sides of membrane material, drive the membrane material and transmit the removal, avoid the long distance transmission in-process, the traction transmission effort inconsistent that the membrane material received, influence the production of four layers of bags.

As shown in fig. 4 and 5, the feed side and the discharge side of the transverse heat-sealing unit 14 are each provided with a pair of guide rollers 25, the pair of guide rollers 25 includes two film guide rollers 25a disposed side by side and in close proximity, and the two film guide rollers 25a are disposed on both sides of the film transport path, respectively.

After adopting above-mentioned design, utilize two membrane material guide rolls 25a to make the membrane material keep certain tension before and after the heat-seal in transmission process, be favorable to realizing the stable transmission of membrane material.

As shown in fig. 6, a cooling unit 18 is arranged at the discharge side of the heat-seal assembly 2, the cooling unit 18 includes two cooling strips 18a, and the two cooling strips 18a are respectively arranged at two sides of the film material conveying path after heat-sealing and extend along the length direction parallel to the longitudinal heat-seal strip 15 a; the two cooling units 18 are arranged, and the two cooling units 18 are sequentially distributed side by side along the film material conveying path.

Because the four-layer bag is subjected to heat sealing treatment through the turnover inner film and the two outer films of the film material, the surface temperature of the four-layer bag is higher after heat sealing, the four-layer bag is influenced by transmission acting force in the transmission process, the four-layer bag is easy to deform, the firmness of the four-layer bag is influenced, and meanwhile, the surface of the four-layer bag is easy to deform, such as wrinkles. At the moment, the two cooling units 18 are used for cooling the heat-sealed film material, so that the temperature of the film material is reduced, the bonding strength of the folded inner film and the two outer film is ensured, and the firmness of the packaging bag is increased; moreover, after the two cooling strips 18 in the cooling unit 18 are close to each other and pressed on two sides of the film material, the film material can be flattened, so that wrinkles generated by heat sealing are eliminated, and the quality of the formed four-layer bag is ensured.

As shown in fig. 4, edge cutting blades 21 are arranged between the two transverse heat sealing units 14 and the guide pair rollers 25, and the cutting edges of the two edge cutting blades 21 intersect with the conveying paths on both sides of the film material, so that the edge cutting blades 21 can cut off the redundant side edges of the film material in the film material conveying process, and the four-layer bag produced by heat sealing is shaped, and the width of the four-layer bag is kept consistent.

As shown in fig. 3, the discharge side of the heat-seal assembly 2 is provided with an opening knife block 22, a color marker 19 and a cutter 20 in this order along the conveying direction of the film material; two opening knife blocks 22 are arranged, and the cutting edges of the two opening knife blocks 22 are arranged oppositely; the color marker 19 is arranged on one side of the film material transmission path after heat sealing; the cutter 20 is used to cut the heat-sealed film material.

After the film material is cooled, the film material is lifted and moved through the opening knife block 22, openings are formed in the side edges of the four layers of bags, then the color marker 19 marks one side surface of the four layers of bags, the four layers of bags are cut at the opening of the side edges of the four layers of bags through the cutter 20 along with the transmission of the four layers of bags, and the four layers of bags which are connected together are separated one by one, so that the workload of workers is reduced, the production efficiency of the four layers of bags is improved, and finally the four layers of bags as shown in fig. 12 are produced one by one at the output end of the device.

As shown in fig. 1 and 10, the inner film discharging assembly 3 includes an inner film discharging roller 3a, a plurality of inner film tension rollers 3b for winding the inner films 23 in a staggered manner are arranged on the discharging side of the inner film discharging roller 3a, an inner film reversing member 3c is arranged between the inner film tension rollers 3b and the inner film drawing roller 12, the inner film reversing member 3c has a reversing edge for winding the inner films 23, wherein the axial line of the inner film discharging roller 3a and the axial line of the inner film tension roller 3b both extend horizontally in the direction perpendicular to the axial line of the composite pressing roller 1a, and the included angle between the reversing edge and the axial line of the inner film discharging roller 3a and the axial line of the inner film drawing roller 12 is 45 °.

In the inner membrane emptying assembly 3, the inner membrane 23 is wound on an inner membrane emptying roller 3a, the inner membrane emptying roller 3a rotates to provide the inner membrane 23 required by four-layer bag production, the inner membrane 23 sequentially passes through the inner membrane tension rollers 3b in a staggered winding mode, the inner membrane tension rollers 3b enable the inner membrane 23 to keep certain tension, stable transmission of the inner membrane 23 is facilitated, the transmission direction of the inner membrane 23 is adjusted through the inner membrane reversing piece 3c, and the inner membrane traction roller 12 can be transmitted to the turnover piece 5 to be turned over after rotating.

As shown in fig. 1 and 11, the outer membrane discharging assembly 4 includes an outer membrane discharging roller 4a, a plurality of outer membrane fixed tension rollers 4b are arranged on the discharging side of the outer membrane discharging roller 4a, an outer membrane swing arm 4d is arranged below the outer membrane fixed tension rollers 4b, a plurality of outer membrane swing tension rollers 4c corresponding to the outer membrane fixed tension rollers 4b one by one are arranged on the outer membrane swing arm 4b, an outer membrane reversing piece 4e is arranged between the outer membrane swing arm 4b and the outer membrane traction roller 13, and the outer membrane reversing piece 4e has a reversing edge for the outer membrane 24 to wind; wherein the axial leads of the outer membrane emptying roller 4a, the outer membrane fixed tensioning roller 4b and the outer membrane swinging tensioning roller 4c are parallel to the axial lead of the composite press roller 1a, and the included angles between the reversing edge and the axial leads of the outer membrane emptying roller 4a and the outer membrane traction roller 13 are both 45 degrees.

In the outer membrane emptying component 4, an outer membrane 24 is wound on an outer membrane emptying roller 4a, the outer membrane emptying roller 4a rotates to provide the outer membrane 24 required by four-layer bag production, the outer membrane 24 is sequentially wound in a staggered manner through an outer membrane fixed tension roller 4b and an outer membrane swinging tension roller 4c, so that certain pressure is kept in the transmission process of the outer membrane 24, the outer membrane swinging arm 4b rotates to adjust the distance between the outer membrane fixed tension roller 4b and the outer membrane swinging tension roller 4c, the tension in the transmission process of the outer membrane 24 is adjusted to be kept in a proper range, and the outer membrane 24 is prevented from being broken and damaged due to overlarge tension; and then, the outer film 24 is wound on the reversing edge of the outer film reversing piece 4e, the transmission direction of the outer film is adjusted, the outer film can be wound on the outer film traction roller 13, the outer film 24 can be driven to be transmitted to the cutting piece 6 after the outer film traction roller 13 rotates, the outer film is divided into two outer films with the same width, and then the outer films and the folded inner film are subjected to heat sealing treatment to obtain the four-layer bag.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a four-layer bag system bag device, includes composite roller set (1) and heat-seal subassembly (2), the feed side of composite roller set (1) is provided with interior membrane blowing subassembly (3) and adventitia blowing subassembly (4), composite roller set (1) includes the parallel just compound compression roller of next-door neighbour's setting of two axial leads, its characterized in that:

a turnover piece (5) is arranged between the inner film discharging assembly (3) and the composite roller set (1), the turnover piece (5) is provided with two turnover edges (5 a) for simultaneously winding the inner film, and the two turnover edges (5 a) are intersected to form a V shape back to the composite roller set (1);

adventitia blowing subassembly (4) with set gradually between compound roller set (1) along the direction of transmission of adventitia and cut apart into two with the adventitia and cut apart piece (6) and two guide assembly (7), two guide assembly (7) are used for guiding the adventitia after cutting apart to turn over a piece (5) with the both sides of intimal between compound roller set (1).

2. The four-layer bag making apparatus of claim 1, wherein: the folding device is characterized in that a folding roller (8) is arranged between the folding piece (5) and the composite roller set (1), the axial lead of the folding roller (8) is equal to the included angle of the two folding edges (5 a) and is intersected with the plane where the two folding edges (5 a) are located, and the folding roller (8) is closely adjacent to the intersection position of the two folding edges (5 a).

3. The four-layer bag making apparatus of claim 2, wherein: the laminating roller set comprises a laminating roller (8), a laminating roller (9) and a composite roller set (1), wherein the laminating roller (9) is arranged between the laminating roller (8) and the composite roller set (1), the axis of the laminating roller (9) is parallel to the axis of the laminating roller (8), the laminating roller (9) and the laminating roller (8) are respectively arranged on two sides of a transmission path of an inner film after lamination, a laminating roller (10) is arranged between the laminating roller (8) and the composite roller set (1), and the laminating roller (10) and the laminating roller (9) are respectively arranged on two sides of the transmission path of the inner film after lamination.

4. The four-layer bag making apparatus of claim 1, wherein: a prepressing roller (11) is arranged between the turning piece (5) and the inner film discharging assembly (3), the included angle between the axial line of the prepressing roller (11) and the two turning edges (5 a) is equal, the included angle is parallel to the plane where the two turning edges (5 a) are located, the prepressing roller (11) and the turning piece (5) are respectively arranged on two sides of an inner film transmission path before superposition, an inner film traction roller (12) is arranged between the turning piece (5) and the inner film discharging assembly (3), and the inner film traction roller (12) is used for connecting an inner film tractor for driving the inner film traction roller to rotate around the axial line.

5. The four-layer bag making apparatus of claim 1, wherein: the dividing surface of the dividing piece (6) is vertical to the plane of the two turned edges (5 a); the two guide assemblies (7) respectively comprise an outer membrane direction adjusting piece (7 a) and outer membrane guide rollers (7 b) which are sequentially arranged along a transmission path of the divided outer membrane, the outer membrane direction adjusting piece (7 a) is provided with a direction adjusting side for winding the divided outer membrane, the included angle between the direction adjusting side and the dividing surface of the dividing piece (6) is 45 degrees, the axial line of the outer membrane guide rollers (7 b) is parallel to the axial line of the composite compression roller, the outer membrane guide rollers (7 b) are provided in plurality, and the outer membrane guide rollers (7 b) comprise an inner guide roller (7 ba) arranged on the inner side of the transmission path of the divided outer membrane and an outer guide roller (7 bb) arranged on the outer side of the transmission path of the divided outer membrane.

6. The four-layer bag making apparatus of claim 1, wherein: cut apart piece (6) with be provided with adventitia carry over pinch rolls (13) between the adventitia feed subassembly, adventitia carry over pinch rolls (13) are used for connecting its adventitia tractor around its axial lead pivoted of drive.

7. The four-layer bag making apparatus of claim 1, wherein: the heat-seal assembly (2) comprises a transverse heat-seal unit (14) and a longitudinal heat-seal unit (15) which are sequentially arranged, wherein the transverse heat-seal unit (14) is provided with two transverse heat-seal units in pairs and is respectively arranged at two sides of the composite rear film material, the two transverse heat-seal units (14) respectively comprise two transverse heat-seal strips (14 a) which are respectively arranged at two sides of a transmission path of the composite rear film material, the transverse heat-seal strips (14 a) extend along the width direction perpendicular to the film material, the longitudinal heat-seal unit (15) comprises two longitudinal heat-seal strips (15 a) which are respectively arranged at two sides of the transmission path of the composite rear film material, and the longitudinal heat-seal strips (15 a) extend along the width direction parallel to the film material.

8. The four-layer bag making apparatus of claim 7, wherein: two of the transverse heat-seal units (14) are arranged on the feeding side of the longitudinal heat-seal unit (15); in the transverse heat-sealing unit (14) adjacent to the opening of the turnover inner film, a strip-shaped spacer (16) is arranged between the two transverse heat-sealing strips (14 a), the spacer (16) extends in the length direction parallel to the two transverse heat-sealing strips (14 a) and is arranged between two side walls of the turnover inner film, heat-sealing traction double rollers (17) are arranged between the transverse heat-sealing unit (14) and the longitudinal heat-sealing unit (15) and between the transverse heat-sealing unit (14) and the composite roller set (1), the heat-sealing traction double rollers (17) comprise two heat-sealing traction rollers (17 a) with the roller surfaces attached to each other, and at least one of the two heat-sealing traction rollers (17 a) is connected with a heat-sealing tractor for driving the heat-sealing traction rollers to rotate around the axis of the heat-sealing traction rollers.

9. The four-layer bag making apparatus of claim 7, wherein: the material discharging side of the heat sealing assembly (2) is provided with a cooling unit (18), the cooling unit (18) comprises two cooling strips (18 a), the two cooling strips (18 a) are respectively arranged on two sides of a heat-sealed film material transmission path and extend along the length direction parallel to the longitudinal heat sealing strips (15 a), and at least two cooling units (18) are arranged and distributed along the heat-sealed film material transmission path.

10. The four-layer bag making apparatus of claim 1, wherein: the discharging side of the heat-sealing assembly (2) is provided with a color marker (19), the color marker (19) is arranged on one side of the film material transmission path after heat sealing, and the discharging side of the color marker (19) is provided with a cutter (20), and the cutter (20) is used for cutting the film material after heat sealing.

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