Double-sided laminating production device for color printing packaging

Abstract

The invention discloses a double-sided film coating production device for color printing packaging, which comprises a rack, and the rack is provided with four winding assemblies, namely a paper unwinding assembly, a first film unwinding assembly, a second film unwinding assembly and a winding assembly; the first film laminating assembly and the second film laminating assembly are respectively used for sequentially carrying out hot press molding on a first film output by the first film unwinding assembly and a second film output by the second film unwinding assembly on two surfaces of punched paper to form composite paper; the winding assembly is used for winding and collecting the composite paper. According to the double-sided laminating production device for color printing packaging, paper is punched in advance, so that part of materials of a first film can enter through holes of the paper conveniently during primary hot pressing, the materials in the through holes can be connected with a second film during secondary hot pressing, the connection strength between layers of composite packaging paper is enhanced, delamination is prevented, and the product quality is guaranteed; the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of composite paper production, and in particular to a double-sided laminating production device for color printing packaging. Background Art

[0002] Double-sided lamination of paper means that a layer of plastic film is covered on both sides of the paper. Through heat pressing, adhesives and other effects, the plastic film and paper are tightly combined to form a composite paper that combines paper and plastic. After double-sided lamination of paper, both sides are protected by plastic film, which significantly improves the waterproof, moisture-proof, anti-fouling, wear-resistant, and folding-resistant properties. It can effectively protect the items in the package and extend the shelf life. It also makes the surface of the printed matter smoother and brighter, enhances the visual appeal of the package, and promotes product consumption. At the same time, the strength and toughness of the paper are improved, and it is not easy to be damaged or torn during transportation and storage, which extends the service life of the package. Therefore, double-sided lamination packaging composite paper is widely used in high-end gift packaging and other fields.

[0003] The existing double-sided lamination production equipment mainly connects the film and paper by heat pressing and adhesives. The films on both sides of the paper are separated. After a period of use, the film and paper are easily separated due to factors such as temperature and humidity changes, light, and adhesive aging. That is, stratification occurs, which affects the performance of the composite paper and shortens its service life.

[0004] Therefore, it is necessary to improve the double-sided lamination production device in the prior art. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects in the prior art and provide a double-sided lamination production device for color printing packaging, which can strengthen the connection strength between film and paper, avoid delamination, extend the service life and ensure the quality.

[0006] In order to achieve the above technical effects, the technical solution of the present invention is: a double-sided lamination production device for color printing packaging, comprising a frame, on which are arranged:

[0007] Four winding assemblies, namely a paper unwinding assembly, a first film unwinding assembly, a second film unwinding assembly and a winding assembly;

[0008] A punching assembly, a first laminating assembly and a second laminating assembly are sequentially distributed, wherein the punching assembly is used to punch holes in the paper output by the paper unwinding assembly, and the first laminating assembly and the second laminating assembly are respectively used to sequentially hot-press a first film output by the first film unwinding assembly and a second film output by the second film unwinding assembly onto two sides of the punched paper to form a composite paper;

[0009] The winding assembly is used for winding and collecting the composite paper.

[0010] Preferably, in order to increase the contact area between the composite paper formed after the paper is connected to the first film and the second film and to strengthen the connection strength, an indentation component is provided between the second laminating component and the second film unwinding component, for extruding the second film so that a dent corresponding to the through hole on the paper after punching is formed on the side where the second film is connected to the paper.

[0011] Preferably, in order to facilitate the first hot pressing molding, part of the material of the first film flows to the lower surface of the paper through the through holes on the paper after punching, and the first laminating assembly is used to hot press the first film on the top surface of the paper after punching.

[0012] Preferably, in order to be able to perform punching, indentation, primary hot pressing and secondary hot pressing simultaneously and improve production efficiency, the frame includes a fixed frame, a lifting unit arranged on the fixed frame and a movable frame connected to the output end of the lifting unit, the punching assembly, the first coating assembly, the second coating assembly and the indentation assembly respectively include an upper punching part and a lower punching part, an upper hot pressing plate and a lower pressure platform, an upper pressing plate and a lower hot pressing platform, and an upper indentation part and a lower indentation part all distributed in the vertical direction, the upper punching part, the upper hot pressing plate, the upper pressing plate and the upper indentation part are all connected to the movable frame, and the lower punching part, the lower pressure platform, the lower hot pressing platform and the lower indentation part are all connected to the fixed frame.

[0013] Preferably, in order to facilitate the removal of waste paper at the through holes when punching the paper, and to guide part of the material of the first film to flow downward through the through holes on the paper during a hot pressing, the first lower punching member and the lower pressure platform are both hollow structures, and the top surfaces are respectively provided with a first suction hole and a second suction hole that are connected to their own inner cavities and correspond to the through holes formed on the rear surface of the paper after punching, and the first lower punching member and the lower hot pressing platform are respectively connected to a first negative pressure pump and a second negative pressure pump.

[0014] Preferably, in order to prevent the sucked-out paper scraps from entering the first negative pressure pump and affecting the normal operation of the first negative pressure pump, the first lower punching member has a built-in filter.

[0015] Preferably, in order to cool the formed composite packaging paper and avoid the product sticking together and being scrapped due to over-high temperature during winding, an air cooling component connected to the output end of the first negative pressure pump is also included, which is used to blow air to cool the composite paper between the second coating component and the winding component.

[0016] Preferably, in order to achieve uniform cooling of both sides of the composite paper, the air cooling assembly includes hollow air cooling shells located on both sides of the composite paper conveying path, and air cooling holes are provided on one side of the air cooling shell adjacent to the composite paper conveying path.

[0017] Preferably, in order to facilitate the orderly conveying of paper, the first film and the second film, the winding assembly includes a winding motor, a winding roller coaxially connected to the output end of the winding motor and axially horizontal, and a conveying unit located between the winding roller and the second coating assembly, and the conveying unit includes two pressure rollers combined to form a composite pair of rollers, one of which is connected to a rotating unit.

[0018] Preferably, in order to facilitate the detection of the conveying speed and total conveying progress of the paper, the first film, the second film and the composite packaging paper so as to improve the production quality of the composite paper, the winding assembly also includes a Hall sensor for detecting the rotation angle of the pressure roller.

[0019] In summary, compared with the prior art, the double-sided lamination production device for color-printed packaging of the present invention punches holes in the paper in advance, so that part of the material of the first film can enter the through holes of the paper during the first hot pressing, so that during the second hot pressing, the material in the through holes can be connected to the second film, thereby enhancing the connection strength between the layers of the composite packaging paper, preventing delamination, ensuring product quality, and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 yes Figure 1 Side view of

[0022] Figure 3 It is a structural schematic diagram of another perspective of the present invention;

[0023] Figure 4 It is a cross-sectional structural schematic diagram of the present invention;

[0024] Figure 5 yes Figure 4 A magnified view of part A;

[0025] Figure 6 yes Figure 4 A magnified view of part B;

[0026] Figure 7 yes Figure 4 Enlarged view of part C;

[0027] Figure 8 yes Figure 4 A magnified view of the D portion;

[0028] Fig. 9 It is a schematic structural diagram of the upper punching member of the present invention;

[0029] Fig.10 It is a schematic structural diagram of the upper indentation member of the present invention;

[0030] Fig.11It is a structural schematic diagram of the frame of the present invention;

[0031] Fig.12 yes Fig.11 Explosion diagram of

[0032] Fig.13 It is a schematic structural diagram of the winding assembly of the present invention;

[0033] Fig.14 yes Fig.13 Explosion diagram of

[0034] Fig.15 is a structural schematic diagram of the winding assembly of the present invention from another perspective;

[0035] Fig.16 It is a schematic diagram of the structure of producing composite packaging paper according to the present invention;

[0036] Fig.17 It is a schematic diagram of the process of producing the composite packaging paper of the present invention;

[0037] In the figure: 1, frame; 11, fixed frame; 111, lower plate; 1111, lower support leg; 112, upper plate; 1121, first upper support leg; 1122, second upper support leg; 1123, third upper support leg; 1124, fourth upper support leg; 1125, upper bracket; 113, end frame; 114, guide sleeve; 12, lifting unit; 13, movable frame; 131, side frame; 1311, horizontal bar; 1312, vertical bar; 1313, oblique bar; 1314, connecting frame; 132, horizontal tube; 14, guide roller; 2, winding assembly; 201, paper unwinding assembly; 202, first film unwinding assembly; 203, second film unwinding assembly; 2 04, winding assembly; 21, winding motor; 211, plug sleeve; 212, third bolt; 213, third nut; 22, winding roller; 221, winding frame; 222, bracket; 223, slide; 23, pressure roller; 231, sliding roller seat; 24, rotating unit; 25, Hall sensor; 26, distance sensor; 27, guide roller; 28, bottom frame; 281, slide rail; 282, vertical plate; 2821, slide; 283, detection frame; 29, counterweight; 3, punching assembly; 31, upper punching member; 311, punching cover; 312, punching plate; 3121, punching cutting blade; 313, first bolt; 314, first nut; 3 2. Lower punching member; 321. Punching barrel; 3211. Punching notch; 3212. Punching convex frame; 3213. First negative pressure port; 3214. First connecting port; 322. Punching plate; 3221. Punching convex plate; 320. First suction hole; 33. First negative pressure pump; 34. Filter element; 341. Flanging; 4. First laminating assembly; 41. Upper hot pressing plate; 411. Upper hot pressing barrel; 412. Upper electric heating plate; 413. Upper heat insulation cover; 42. Lower pressure platform; 420. Second suction hole; 421. Pressure barrel; 4211. Pressure notch; 4212. Second negative pressure port; 4213. Second connecting port; 422. Pressure cover; 4221 , pressure-bearing convex plate; 43, second negative pressure pump; 5, second laminating assembly; 51, upper pressing plate; 52, lower hot pressing table; 521, lower hot pressing cover; 522, lower electric heating plate; 523, lower insulation cover; 6, indentation assembly; 61, upper indentation member; 611, indentation cover; 612, indentation plate; 6121, protrusion; 613, second bolt; 614, second nut; 62, lower indentation member; 7, air-cooling assembly; 71, air-cooling shell; 711, shell; 712, shell cover; 713, pillar; 710, air-cooling hole; 72, connecting pipe; 73, air pipe; 8, composite packaging paper; 81, paper layer; 82, first film layer; 83, second film layer. DETAILED DESCRIPTION

[0038] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0039] like Figure 1-Figure 17 As shown, a double-sided laminating production device for color printing packaging of the present invention comprises a frame 1, on which are arranged:

[0040] Four winding assemblies 2, namely a paper unwinding assembly 201, a first film unwinding assembly 202, a second film unwinding assembly 203 and a winding assembly 204;

[0041] The punching assembly 3, the first laminating assembly 4 and the second laminating assembly 5 are sequentially arranged, the punching assembly 3 is used to punch the paper output by the paper unwinding assembly 201, and the first laminating assembly 4 and the second laminating assembly 5 are respectively used to sequentially hot-press the first film output by the first film unwinding assembly 202 and the second film output by the second film unwinding assembly 203 onto the two sides of the punched paper to form a composite paper;

[0042] The winding assembly 204 is used for winding and collecting the composite paper.

[0043] In the production device of the invention, the paper unwinding component 201 is used to unwind paper, which forms a composite packaging paper 8, that is, the paper layer 81 of the product. The first film unwinding component 202 is used to unwind the first film, which forms a first film layer 82 of the composite packaging paper 8, and the first film layer 82 is stacked on one side of the paper layer 81. The second film unwinding component 203 is used to unwind the second film, which forms a second film layer 83 of the composite packaging paper 8, and the second film layer 83 is stacked on the other side of the paper layer 81. In this way, the composite packaging paper 8 is formed by combining the three-layer structure.

[0044] In specific operation, the paper is unrolled by the paper unwinding component 201 and conveyed to the punching component 3, which punches the paper so that a plurality of through holes are formed at multiple locations on the paper; the punched paper is conveyed to the first laminating component 4, and at the same time, the first film unwinding component 202 conveys the first film to the first laminating component 4, and the first film and paper are heat-pressed by the first laminating component 4, so that the first film is heat-pressed and formed on one side of the paper, forming a Fig.17 The structure shown on the upper left side, during the hot pressing process, part of the material of the first film flows through the through hole of the paper after being heated, and is solidified on the other side of the paper, and then the composite paper is transferred to the second laminating component 5; at the same time, the second film unwinding component 203 transfers the second film to the second laminating component 5, and the second laminating component 5 hot presses the second film on the other side of the paper. During the hot pressing process, since part of the material of the first film is previously formed on the other side of the paper through the first through hole, that is, the connecting surface between the second film and the paper, during the hot pressing process, the softened second film material is not only in contact with the paper, but also connected to the first film. After the hot pressing is completed, as shown in FIG. Fig.17As shown, the first film material formed at the through hole of the paper tightly connects the paper and the second film, and increases more mechanical connection points between the first film and the paper. At the same time, the first film layer 82 is connected to the second film layer 83, and the material enters the through hole to form a similar "anchoring" effect, thereby enhancing the adhesion between the first film layer 82, the second film layer 83 and the paper layer 81, thereby strengthening the connection strength between the layers, avoiding interference from external factors that cause the three-layer structure of the composite packaging paper 8 to delaminate, thereby improving the product quality of the composite packaging paper 8 and extending its service life.

[0045] Moreover, since through holes are formed at the paper, and part of the material of the first film passes through the through holes during the hot pressing process, and the final displayed color of the first film is different from the color of the paper, the final composite packaging paper 8, compared with the prior art, the first film material at the through holes can form certain pattern stripes. According to user needs, the number, size, shape, and distribution position of the through holes are determined by the punching component 3. Therefore, the punching component 3 forms different distributed through holes on the surface of the paper, and the composite packaging paper 8 produced by the present device can have a more three-dimensional sense than other packaging papers on the market. The material of the first film at the through holes enhances the display effect of graphics and texts, and enhances the visual appeal of the product, thereby helping to enhance the visual appeal of the color-printed packaging, helping to attract consumers' attention, and further enhancing the market competitiveness of the composite packaging paper 8.

[0046] A further improvement is that an indentation component 6 is provided between the second laminating component 5 and the second film unwinding component 203 for pressing the second film so that a dent corresponding to the through hole on the paper after punching is formed on the side of the second film connected to the paper.

[0047] By means of the creasing assembly 6, before the second film is connected to the punched and once hot-pressed paper, the side of the second film connected to the paper is processed in advance, such as Fig.17 As shown in the upper right side, a dent is formed on this surface of the paper. This is because during a heat pressing operation, part of the material of the first film passes through the through hole of the paper, forming a convex point on the side of the paper layer 81 facing away from the first film layer 82, and a dent is formed on the second film layer 83 to accommodate the convex point. At the same time, the contact area between the second film layer 83 and the first film passing through the through hole of the paper can be increased, thereby strengthening the bonding force between the first film layer 82 and the second film layer 83, further preventing delamination, and thus improving the product quality of the final composite packaging paper 8.

[0048] A further improvement is that the first laminating assembly 4 is used to heat-press the first film onto the top surface of the punched paper.

[0049] The above-mentioned design is more conducive to the first laminating component 4 hot-pressing the first film onto the surface of the paper. Part of the material of the first film passes through the through holes formed on the surface after the paper is punched and is formed on the other side of the paper. This is convenient for the subsequent processing of the second laminating component 5, increasing the contact area between the second film and the paper and the first film, strengthening the bonding force, preventing delamination, and thus improving the product quality of the composite packaging paper 8.

[0050] A further improvement is that the frame 1 includes a fixed frame 11, a lifting unit 12 arranged on the fixed frame 11 and a movable frame 13 connected to the output end of the lifting unit 12, the punching assembly 3, the first laminating assembly 4, the second laminating assembly 5 and the indentation assembly 6 respectively include an upper punching member 31 and a lower punching member 32, an upper hot pressing plate 41 and a lower pressure platform 42, an upper pressing plate 51 and a lower hot pressing platform 52, and an upper indentation member 61 and a lower indentation member 62 distributed along the vertical direction, the upper punching member 31, the upper hot pressing plate 41, the upper pressing plate 51 and the upper indentation member 61 are all connected to the movable frame 13, and the lower punching member 32, the lower pressure platform 42, the lower hot pressing platform 52 and the lower indentation member 62 are all connected to the fixed frame 11.

[0051] With the above design, the lifting unit 12 can drive the movable frame 13 to lift and move, so that the movable frame 13 drives the upper punching member 31, the upper hot pressing plate 41, the upper pressing plate 51 and the upper indentation member 61 to lift and move, which is convenient for punching, primary hot pressing, indentation and secondary hot pressing of materials at different positions (including paper, the first packaging film, and the second film). The first laminating component 4, the second laminating component 5 and the indentation component 6 respectively and synchronously process different positions of the material, thereby improving the product production efficiency. Since the movable frame 13 is only controlled by the lifting unit 12, it can drive the first laminating component 4, the second laminating component 5 and the indentation component 6 to move, thereby reducing the number of driving sources and reducing the cost required for the driving source.

[0052] Specifically, Figure 1-Figure 4 and Fig.11 , Fig.12 As shown, the fixed frame 11 of the rack 1 includes a lower plate 111, an upper plate 112 and an end frame 113. The lower plate 111 and the upper plate 112 are rectangular plates with the same length direction. The lower plate 111 can usually be fixed on the ground, and the two ends of the upper plate 112 are respectively fixed to the top of the lower plate 111 through two end frames 113. The projections of the two end frames 113 on the horizontal plane are U-shapes facing each other.

[0053] A vertical lower support leg 1111 is fixed on the lower plate 111, and the lower indentation member 62 is a horizontal rectangular plate fixed to the top of the lower support leg 1111. Figure 8As shown; the upper plate 112 is provided with a first upper support leg 1121, an upper bracket 1125, a second upper support leg 1122, a third upper support leg 1123 and a fourth upper support leg 1124, all of which are vertically arranged in sequence along its length direction, wherein the paper unwinding assembly 201, the first film unwinding assembly 202 and the winding assembly 204 are all arranged on the top of the first upper support leg 1121, the upper bracket 1125 and the fourth upper support leg 1124, and the lower punching member 32 and the lower pressure platform 42 are respectively fixed on the top of the second upper support leg 1122 and the third upper support leg 1123.

[0054] The second film unwinding assembly 203 is arranged above the lower plate 111, and the upper plate 112 is also provided with perforations for the second film unwinding assembly 203 to pass through the perforations after being indented by the indentation assembly 6, and then undergo a secondary heat pressing treatment with the composite paper.

[0055] The movable frame 13 includes side frames 131 distributed on both sides of the upper plate 112 along the width direction of the lower plate 111 and arranged vertically opposite each other, and a transverse tube 132 located directly above the upper plate 112 and axially parallel to the width direction of the upper plate 112. Both ends of the transverse tube 132 are fixedly connected to the two side frames 131 respectively.

[0056] The side frame 131 includes two horizontal cross bars 1311, two vertical vertical bars 1312, four inclined diagonal bars 1313 and four horizontal connecting frames 1314. Specifically, the two cross bars 1311 are distributed along their own length direction, the two vertical bars 1312 are distributed along their own length direction, the two cross bars 1311 and the two vertical bars 1312 are fixedly connected to the end of the cross tube 132, the ends of the two vertical bars 1312 away from the cross tube 132 are fixedly connected to the two connecting frames 1314, the ends of the two cross bars 1311 away from the cross tube 132 are fixedly connected to the remaining two connecting frames 1314 and the ends of the diagonal bars 1313, and the other ends of the diagonal bars 1313 are fixedly connected to the connecting frames 1314; the four connecting frames 1314 are respectively connected to the upper punching member 31, the upper ironing plate 41, the upper pressing plate 51 and the upper indentation member 61.

[0057] The lifting unit 12 includes a lifting cylinder, the cylinder barrel of which extends axially upward and the bottom end is fixed above the upper plate 112, and the piston rod is connected with a collar, which is fixedly sleeved outside the transverse tube 132. In this way, when the lifting cylinder is in operation, the two side frames 131 can be driven to move up and down through the transverse tube 132, and the upper punching member 31, the upper ironing plate 41, the upper pressing plate 51 and the upper indentation member 61 fixed between the two side frames 131 can be driven to move up and down.

[0058] In order to ensure the stable lifting movement of the side frame 131 and realize precise punching, hot pressing and indentation, the fixed frame 11 of the present invention also includes a sealing sleeve arranged outside the two vertical bars 1312 and two guide sleeves 114 relatively slidably connected to the vertical bars 1312. The two guide sleeves 114 extend in the vertical direction, one of which is fixedly connected to the upper plate 112, and the other is fixedly connected to the lower pressure platform 42. In this way, the positions of the two guide sleeves 114 are fixed to ensure that when the lifting unit 12 is in operation, the side frame 131 can drive the upper punching member 31, the upper hot pressing plate 41, the upper pressing plate 51 and the upper indentation member 61 to move stably up and down in the vertical direction.

[0059] The fixed frame 11 further includes a guide roller 14, which is provided with a plurality of guide rollers 14 and whose axial direction is parallel to the width direction of the lower plate 111. The guide rollers 14 are distributed everywhere, such as Figure 2 and Figure 3 As shown, the first location is adjacent to the discharge side of the punching assembly 3, the second location and the third location are adjacent to the feed side and the discharge side of the first laminating assembly 4 respectively, the fourth location is adjacent to the discharge side of the creasing assembly 6, and the fifth location is adjacent to the discharge side of the second laminating assembly 5. The guide roller 14 is used to conveniently guide the transmission direction of the paper, the first film and the second film, so that they pass through the punching assembly 3, the first laminating assembly 4, the creasing assembly 6 and the second laminating assembly 5 in an orderly manner.

[0060] A further improvement is that the first lower punching member 32 and the lower pressure platform 42 are both hollow structures, and the top surfaces are respectively provided with a first suction hole 320 and a second suction hole 420 which are connected to their own inner cavities and correspond to the through holes formed on the rear surface of the paper after punching; the first lower punching member 32 and the lower ironing platform 52 are respectively connected to the first negative pressure pump 33 and the second negative pressure pump 43; the first lower punching member 32 has a built-in filter member 34.

[0061] When the punching assembly 3 is in operation, the upper punching member 31 punches the paper, and the paper is pressed against the lower punching member 32. At the same time, the first negative pressure pump 33 is started to extract the air in the lower punching member 32. Through the flow of air, the waste material cut off from the paper is driven to enter the lower punching member 32 through the first suction hole 320. The filter member 34 can prevent waste paper scraps from entering the first negative pressure pump 33. In this way, the punched paper can form a through hole, thereby ensuring the punching quality of the paper.

[0062] When the first laminating assembly 4 is in operation, the upper pressing plate 41 moves downward, pressing the punched paper and the first film onto the lower pressure platform 42. At this time, the through hole on the paper is facing the second suction hole 420. The upper pressing plate 41 performs a pressing process on the first film above the paper, so that the paper melts and softens. While adhering to the top surface of the paper, the second negative pressure pump 43 starts to extract the air in the lower pressure platform 42, so that a certain negative pressure is formed in the lower pressure platform 42, which is conducive to the flow of air, drives the flow of air at the through hole of the paper, promotes the flow of the first film material, and makes the first film flow downward, pass through the first through hole, and be formed on the lower surface of the paper. In order to avoid the first film material from contacting the inner wall of the second suction hole 420, preferably, the aperture of the second suction hole 420 is larger than the aperture of the punched hole of the paper.

[0063] The specific structure of the punching assembly 3 is as follows: Figure 5 and Fig. 9 As shown, the upper punching member 31 of the punching assembly 3 includes a punching cover 311 pointing downward horizontally and a punching plate 312 that is sealed and fitted with the inner wall and the top wall of the punching cover 311 and is horizontal. The side of the punching cover 311 is fixedly connected to one of the connecting frames 1314 of the side frame 131. A punching cutting blade 3121 is fixed to the bottom surface of the punching plate 312, so that after the punching plate 312 moves downward, multiple through holes can be formed on the surface of the paper. The edge of the punching plate 312 is detachably fixedly connected by a first bolt 313 and a first nut 314 that are threaded together, so that the punching plate 312 can be replaced easily, and through holes with different shapes, sizes and distributions can be formed on the paper, thereby changing the display effect of the final composite packaging paper 8.

[0064] The lower punching member 32 includes a punching barrel 321 with an open top and fixed on the upper plate 112. Punching notches 3211 are arranged at the center positions of the four sides of the top of the punching barrel 321. The top cover of the punching barrel 321 is provided with a punching plate 322. The first suction hole 320 is formed on the punching plate 322. The circumferential outer edge of the punching plate 322 is sealed with the circumferential inner wall of the punching barrel 321, and punching convex plates 3221 are arranged in the center of the four sides. The thickness and width of the punching convex plates 3221 correspond to the depth and width of the punching notches 3211, so that the punching plate 322 is conveniently plugged in and matched with the punching barrel 321. In this way, it is convenient to replace the punching plate 322 according to the stamping plate 312. A first negative pressure port 3213 is provided at the bottom of the punching barrel 321. The first negative pressure pump 33 is fixed below the upper plate 112 and the input end is connected to the first negative pressure port 3213, so as to conveniently extract the air in the punching barrel 321 to form a certain negative pressure environment inside.

[0065] The filter element 34 is a filter barrel, and a flange 341 is provided on the top axial outer edge thereof, and a punching convex frame 3212 is provided on the circumferential inner wall of the punching convex frame 3212. The circumferential inner wall of the punching convex frame 3212 is sealed and fitted with the circumferential outer edge of the filter barrel, and the top is fitted with the flange 341. In this way, the filter element 34 and the punching barrel 321 are plugged in and matched, so that after running for a period of time, the punching plate 322 is opened, the filter element 34 is taken out, and the accumulated paper scraps are cleaned, and then the filter element 34 is installed in the punching barrel 321.

[0066] In order to prevent the first negative pressure pump 33 from operating at too high a power, which would cause the first suction hole 320 to have too large an adsorption force and cause paper deformation, a first connecting port 3214 is further provided at the top of the outer periphery of the punching barrel 321 , and the first connecting port 3214 is located above the punching convex frame 3212 .

[0067] The specific structure of the first film covering component 4 is as follows Figure 6 As shown, the upper ironing plate 41 includes a horizontal, open-top, flat upper ironing barrel 411, the inner bottom wall of which is fixed with a horizontal upper electric heating plate 412, the top fixed cover is arranged on the upper insulation cover 413, and the outer walls on both sides are fixedly connected to the connecting frame 1314 of the side frame 131.

[0068] The lower pressure-bearing platform 42 includes a pressure-bearing barrel 421 with an open top and fixed to the top of the second upper support leg 1122. Pressure-bearing notches 4211 are arranged at the center positions of the four sides of the top of the pressure-bearing barrel 421. The top cover of the pressure-bearing barrel 421 is provided with a pressure-bearing cover 422. The second suction hole 420 is formed on the pressure-bearing cover 422. The circumferential outer edge of the pressure-bearing cover 422 is sealed with the circumferential inner wall of the pressure-bearing barrel 421, and pressure-bearing convex plates 4211 are arranged in the center of the four sides. The thickness and width of the pressure-bearing convex plates 4221 correspond to the depth and width of the pressure notches 4221, so that the pressure-bearing cover 422 is conveniently plugged in and matched with the pressure-bearing barrel 421. In this way, it is convenient to replace the pressure cover 422 according to the stamping plate 312. A second negative pressure port 4212 is provided at the bottom of the pressure barrel 421. The second negative pressure pump 43 is fixed below the pressure barrel 421 and the input end is connected to the second negative pressure port 4212, so as to conveniently extract the air in the pressure barrel 421 and form a certain negative pressure environment inside.

[0069] In order to prevent the second negative pressure pump 43 from operating at too high a power, which would cause the second suction hole 420 to have too large a suction force and cause paper deformation, a second connecting port 4213 is further provided at the top of the outer periphery of the pressure barrel 421 .

[0070] When the first film and the punched paper pass between the upper pressing plate 41 and the lower pressure platform 42 of the first laminating assembly 4 and the through hole of the paper is aligned with the second suction hole 420 on the pressure cover 422, each winding assembly 2 stops running, and the lifting unit 12 drives the movable frame 13 to move downward, so that the paper and the first film are clamped between the pressure cover 422 and the upper pressing barrel 411, and the upper electric heating plate 412 is energized to heat the upper pressing barrel 411, so that the temperature of the first film increases, and while hot pressing is formed on the upper surface of the paper, the second negative pressure pump 43 is started to extract the air in the pressure barrel 421, so that negative pressure is formed at the pressure barrel 421 and the second suction hole 420, so that part of the material of the first film flows downward through the paper, and then the upper electric heating plate 412 stops heating, and the lifting unit 12 drives the movable frame 13 to move upward, so that the upper pressing plate 41 moves upward, which facilitates the paper and the first film to pass through the first laminating assembly 4.

[0071] The specific structure of the indentation component 6 is as follows Figure 8 and Fig.10 As shown, the upper indentation member 61 includes an indentation cover 611 pointing downward horizontally, and the two side walls of the indentation cover 611 are fixedly connected to the connecting frames 1314 of the two side frames 131, and the inner top wall and the circumferential inner wall are sealed with a horizontal indentation plate 612, and the bottom surface of the indentation plate 612 is integrally formed with a protrusion 6121, and the protrusion 6121 corresponds to the punching cutting edge 3121 one by one; the four side edges of the indentation plate 612 are detachably fixedly connected to the indentation cover 611 through a second bolt 613 and a second nut 614 connected by thread, so that the corresponding indentation plate 612 can be selected according to different stamping plates 312. The lower indentation member 62 is a rectangular plate, which is fixed above the lower plate 111 through the lower support leg 1111.

[0072] After adopting the above structure, while punching and primary hot pressing are being performed, the connecting frame 1314 of the side frame 131 drives the indentation plate 612 to move downward through the indentation cover 611, so that the bottom surface of the indentation plate 612 fits with the top surface of the second film, and the bottom surface of the second film fits with the top surface of the lower indentation member 62. The protrusion 6121 on the indentation plate 612 acts on the top surface of the second film, so that the top surface of the second film forms an indentation depression corresponding to the through hole on the paper, which is convenient for increasing the contact area between the second film, the first film and the paper during the secondary hot pressing, and increasing the interlayer connection force.

[0073] The specific structure of the second film covering component 5 is as follows Figure 7 As shown, the upper pressing plate 51 and the lower ironing platform 52 are both horizontally arranged and the upper pressing plate 51 is located directly above the lower ironing platform 52, and the two side walls of the upper pressing plate 51 are fixedly connected to the connecting frames 1314 of the two side frames 131; the lower ironing platform 52 includes a horizontal downward lower ironing cover 521, and the inner top wall of the lower ironing cover 521 is fixed with a horizontal lower electric heating plate 522, and the bottom fixed cover is provided with a lower insulation cover 523, and the lower insulation cover 523 is fixed above the third upper support leg 1123.

[0074] While punching, hot pressing and creasing are being performed, the connecting frame 1314 of the side frame 131 drives the upper pressing plate 51 to move downward, and clamps the second film after creasing and the first film connected by hot pressing and the paper between the upper pressing plate 51 and the lower hot pressing cover 521. The lower electric heating plate 522 is energized to heat the lower hot pressing cover 521, so that the second film located below the paper is hot pressed and formed on the bottom surface of the paper, and the second film is connected to the first film material through the through hole, forming a composite packaging paper 8 structure in which the first film layer 82, the paper layer 81 and the second film layer 83 are stacked and connected in sequence. After hot pressing and forming, the lifting unit 12 drives the movable frame 13 to move upward, and each winding assembly 2 runs synchronously, driving the material transmission and movement, so as to facilitate the provision of paper, the first film and the second film on the feeding side, and the formed composite packaging paper 8 is wound and collected by the winding assembly 204 on the discharging side.

[0075] A further improvement is that it also includes an air cooling component 7 connected to the output end of the first negative pressure pump 33, which is used for blowing air to cool the composite paper between the second coating component 5 and the winding component 204; the air cooling component 7 includes a hollow air cooling shell 71 located on both sides of the composite paper conveying path, and an air cooling hole 710 is provided on one side of the air cooling shell 71 adjacent to the composite paper conveying path.

[0076] The above structure facilitates the winding assembly 204 to output the sucked air to both sides of the composite wrapping paper 8 through the first negative pressure pump 33 before winding and collecting the composite wrapping paper 8, and cools the composite wrapping paper 8 by blowing air, so as to prevent the composite wrapping paper 8 from sticking together during the winding and collection process due to excessive temperature when hot-pressing the composite wrapping paper 8 on both sides, which eventually makes the product scrapped. Since the cold air used for cooling comes from the air extracted by the first negative pressure pump 33, the first negative pressure pump 33 can not only collect the excess paper waste in the filter element 34, but also cool the composite wrapping paper 8 after the subsequent secondary hot pressing, which is more energy-saving and environmentally friendly. When cooling, air is blown from both sides of the product to ensure that the heated composite wrapping paper 8 is cooled evenly, thereby ultimately improving the product molding quality.

[0077] Specifically, Figure 1-Figure 4 and Figure 7As shown, the air cooling assembly 7 includes two air cooling shells 71 arranged opposite to each other in the vertical direction, the length direction of the air cooling shells 71 is consistent with the width direction of the upper plate 112, the ends of the two air cooling shells 71 at the same position are fixedly connected through a connecting pipe 72, and the air cooling shell 71 located at the lower side is fixed to the upper side of the upper plate 112 through a support 713. Both air cooling shells 71 include a shell 711 with an open side and a shell cover 712 fixedly provided on the open side of the shell 711, and the air cooling hole 710 is formed on the shell cover 712. The shell 711 of the air cooling shell 71 located at the lower side is open at the top, and the shell 711 of the air cooling shell 71 located at the upper side is open at the bottom. The air cooling assembly 7 also includes an air delivery pipe 73, which is U-shaped, with the middle position located below the lower plate 111, and both ends extending upward and penetrating the lower plate 111, one end of which is fixedly connected to the output end of the first negative pressure pump 33, and the other end is fixedly connected to the bottom of the air cooling shell 71 located below. When installing the equipment, a groove can be pre-cut on the ground to facilitate the placement of the middle part of the air delivery pipe 73, and the lower plate 111 is fixed just above the groove position.

[0078] A further improvement is that the winding assembly 2 includes a winding motor 21, a winding roller 22 which is coaxially connected to the output end of the winding motor 21 and is axially horizontal, and a conveying unit located between the winding roller 22 and the second coating assembly 5, the conveying unit includes two pressure rollers 23 which are combined to form a composite pair of rollers, one of the pressure rollers 23 is connected to a rotating unit 24; the winding assembly 2 also includes a Hall sensor 25 for detecting the rotation angle of the pressure roller 23.

[0079] During the use of the device, the winding motor 21 keeps running, driving the winding roller 22 to keep rotating, and performs feeding and unwinding operations of paper, the first film and the second film and winding operations of the composite packaging paper 8, while the rotating unit 24 drives one of the pressure rollers 23 to rotate periodically, and drives the material passing through the two pressure rollers 23 through the friction force between the pressure rollers 23. The rotation angle of the pressure roller 23 is detected by the Hall sensor 25 to determine the conveying distance of the paper, the first film, the second film and the composite packaging paper 8, so as to ensure that the paper, the first film, the second film and the composite packaging paper 8 are conveyed a specific distance each time, thereby ensuring that the through holes on the secondary laminated paper can be aligned with the indentation on the second film, thereby improving the lamination quality of the product and avoiding the difference in conveying distance between the paper, the first film and the second film, which causes the through holes of the paper and the indentation of the second film to be misaligned.

[0080] The specific structure of the winding assembly 2 is as follows: Figure 13-Figure 15As shown, the winding assembly 2 also includes a horizontal base frame 28, wherein the base frame 28 of the paper unwinding assembly 201 is fixed to the top of the first upper support leg 1121, the base frame 28 of the first film unwinding assembly 202 is fixed to the top of the upper bracket 1125, the base frame 28 of the second film unwinding assembly 203 is fixed above the lower plate 111, and the base frame 28 of the winding assembly 204 is fixed to the top of the fourth upper support leg 1124.

[0081] The winding assembly 2 also includes a winding frame 221, and the winding motor 21 is fixed directly above the base frame 28. A slide rail 281 extending in a width direction parallel to the lower plate 111 is also fixed on the base frame 28. A slide groove 223 slidingly matched with the slide rail 281 is provided at the bottom of the winding frame 221, and a bracket 222 is provided at the top for the roller of the winding roller 22 to be placed from top to bottom. A sleeve 211 is fixed coaxially with the end of the winding motor 21 adjacent to the winding frame 221. The sleeve 211 is plug-fitted with the roller shaft of the winding roller 22 and is connected by a third bolt 212 and a third nut 213 connected by threads, so as to facilitate the disassembly and installation operations of the winding roller 22.

[0082] Two vertical plates 282 distributed along the width direction of the lower plate 111 and extending upward are fixed directly above the bottom frame 28, and the vertical plates 282 are located between the winding frame 221 and the first coating assembly 4. A guide roller 27 is arranged between the vertical plates 282 and the winding frame 221, and its axis is parallel to the width direction of the lower plate 111 and rotates around its own axis. The axis lines of the two pressure rollers 23 are parallel to the width direction of the lower plate 111 and both rotate around their own axis lines between the two vertical plates 282. Specifically, the two pressure rollers 23 are distributed along the vertical direction, and the axis line position of the pressure roller 23 located at the bottom is fixed. Both ends of the pressure roller 23 above are connected with sliding roller seats 231, and a sliding opening 2821 extending in the vertical direction is arranged on the vertical plate 282. The sliding roller seat 231 slides on the inner side of the sliding opening 2821. The rotating unit 24 is a rotating motor fixed on one of the sliding roller seats 231, and its output end is fixedly connected with the roller shaft of the pressure roller 23 coaxially. A counterweight block 29 is fixedly connected to the other sliding roller seat 231 to ensure that when the material passes between the two pressure rollers 23, the pressure roller 23 located above can apply uniform pressure in the axial direction. The Hall sensor 25 is arranged on the counterweight block 29.

[0083] A U-shaped detection frame 283 is also fixedly connected to one side of the two vertical plates 282 close to the guide roller 27. A downward distance sensor 26 is provided on the detection frame 283 for detecting the transmission pressure of the material (paper, first film, second film or composite packaging paper 8) between the guide roller 27 and the two composite roller pairs.

[0084] Specifically, the guide roller 27 and the pressure roller 23 located below are tangent to the same horizontal plane, and the distance sensor 26 is located directly above the horizontal plane. When the distance data detected by the distance sensor 26 is the distance between itself and the horizontal plane, it indicates that the material transmission tension is large. At this time, the winding motor 21 corresponding to the paper unwinding component 201, the first film unwinding component 202 and the second film unwinding component 203 needs to increase the rotation speed and increase the unwinding speed to avoid insufficient material supply and deformation caused by excessive material tension. Accordingly, the winding motor 21 corresponding to the winding component 204 reduces the rotation speed and reduces the winding and collection speed to avoid excessive pulling of the material, resulting in the through holes on the paper and the indentations on the second film being misaligned and unable to align when the material on the feed side is subjected to secondary hot pressing. That is, through the above structure, there is always excess material that needs to be transmitted between the guide roller 27 and the two pressure rollers 23 to achieve buffering and avoid excessive material transmission pressure between the winding components 2, which may cause deformation of the material. Therefore, the rotation of the pressure roller 23 is controlled by the rotating unit 24, and the friction force is used to enable the paper, the first film, the second film and the composite packaging paper 8 to be transmitted a specific distance during the operation of the equipment, so that during the secondary hot pressing process, the through holes formed on the paper can be aligned with the indentations formed on the second film. Then the winding motor 21 keeps running, the rotating unit 24 stops running, and the punching component 3, the first laminating component 4, the second laminating component 5 and the indentation component 6 perform punching, primary lamination, secondary lamination and indentation processing on different material positions at various locations through the lifting unit 12. After the processing is completed, the lifting unit 12 drives the movable frame 13 to move upward, and the winding components 2 run simultaneously again to transport the paper, the primary film, the secondary film and the composite packaging paper 8.

[0085] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A double-sided laminating production device for color-printed packaging, comprising a frame, characterized in that: The frame is provided with: Four winding assemblies, namely a paper unwinding assembly, a first film unwinding assembly, a second film unwinding assembly and a winding assembly; A punching assembly, a first laminating assembly and a second laminating assembly are sequentially distributed, wherein the punching assembly is used to punch holes in the paper output by the paper unwinding assembly, and the first laminating assembly and the second laminating assembly are respectively used to sequentially hot-press a first film output by the first film unwinding assembly and a second film output by the second film unwinding assembly onto two sides of the punched paper to form a composite paper; The winding assembly is used for winding and collecting the composite paper.

2. The double-sided film laminating production device for color printing packaging according to claim 1 is characterized in that: An indentation assembly is provided between the second film coating assembly and the second film unwinding assembly, and is used for pressing the second film so that a dent corresponding to the through hole on the paper after punching is formed on the side of the second film connected to the paper.

3. The double-sided film laminating production device for color printing packaging according to claim 2 is characterized in that: The first laminating assembly is used to heat-press the first film onto the top surface of the punched paper.

4. The double-sided film laminating production device for color printing packaging according to claim 3 is characterized in that: The frame includes a fixed frame, a lifting unit arranged on the fixed frame and a movable frame connected to the output end of the lifting unit, the punching assembly, the first laminating assembly, the second laminating assembly and the indentation assembly respectively include an upper punching member and a lower punching member, an upper hot pressing plate and a lower pressure platform, an upper pressing plate and a lower hot pressing platform, and an upper indentation member and a lower indentation member distributed in a vertical direction, the upper punching member, the upper hot pressing plate, the upper pressing plate and the upper indentation member are all connected to the movable frame, and the lower punching member, the lower pressure platform, the lower hot pressing platform and the lower indentation member are all connected to the fixed frame.

5. The double-sided film laminating production device for color printing packaging according to claim 4 is characterized in that: The first lower punching member and the lower pressure platform are both hollow structures, and the top surfaces are respectively provided with a first suction hole and a second suction hole which are connected to their own inner cavities and correspond to the through holes formed on the rear surface of the paper after punching. The first lower punching member and the lower ironing platform are respectively connected to a first negative pressure pump and a second negative pressure pump.

6. The double-sided film laminating production device for color printing packaging according to claim 5, characterized in that: The first lower punching member has a built-in filter.

7. The double-sided film laminating production device for color printing packaging according to claim 5, characterized in that: It also includes an air cooling component connected to the output end of the first negative pressure pump, which is used for blowing air to cool the composite paper between the second laminating component and the winding component.

8. The double-sided film laminating production device for color printing packaging according to claim 7, characterized in that: The air cooling assembly comprises a hollow air cooling shell located at both sides of the composite paper conveying path, and an air cooling hole is arranged on a side of the air cooling shell adjacent to the composite paper conveying path.

9. The double-sided film laminating production device for color printing packaging according to any one of claims 1 to 8, characterized in that: The winding assembly includes a winding motor, a winding roller coaxially connected to the output end of the winding motor and axially horizontal, and a conveying unit located between the winding roller and the second coating assembly, the conveying unit includes two pressure rollers combined to form a composite pair of rollers, one of which is connected to a rotating unit.

10. The double-sided film laminating production device for color printing packaging according to claim 9, characterized in that: The winding assembly also includes a Hall sensor for detecting a rotation angle of the pressure roller.

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