Composite device for food packaging bag printing

Abstract

The invention discloses a compounding device for food packaging bag printing, and relates to the technical field of packaging bag compounding. The device comprises a rack assembly, a set of unwinding rollers and multiple sets of composite rollers are vertically and rotatably installed on the left side of the rack assembly, the multiple sets of composite rollers are designed to incline outwards, a winding roller is vertically and rotatably installed on the right side of the rack assembly, and a bottom collecting assembly is fixedly installed in the middle of the rack assembly; a glue adding assembly is erected over the bottom collecting assembly, and a rolling assembly is arranged on the right side of the bottom collecting assembly. A vertical inclined rolling mode is adopted, pressing can be conducted from the lower portion of the composite packaging bag to the upper portion of the composite packaging bag, due to the inclined rolling design, uneven pressure of some areas can be avoided when materials are rolled, meanwhile, due to the design of vertical inclined rolling, air can be effectively discharged when passing through a roller, bubbles are reduced, and the production efficiency of the composite packaging bag is improved. And therefore, the compounding quality is improved, and more than five layers of packaging bags are compounded.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging bag lamination, and specifically relates to a lamination device for food packaging bag printing. Background Art

[0002] Food packaging bags are usually laminated from multiple material layers. These material layers need to ensure good protective, sealing, tear-resistant and other properties of the packaging bag, while also ensuring bright colors, clear patterns and easy-to-read text in appearance. The lamination technology, that is, combining different functional materials together by means of adhesives or hot pressing, etc., is one of the key processes to achieve these requirements.

[0003] In a Chinese patent (publication number: CN107599603B), a lamination device for food packaging bag printing is disclosed, including a lamination device main body, a leveling roller group, a smooth lamination table, a winding device, a lamination film, a lamination film roller, an electric heating tube, an anti-adhesive heat-resistant resin layer, a hot melt adhesive roller, a glue-transporting permeable cotton, a hot glue storage chamber, a straightener, a unwind device, a primary flattening roller, a connecting shell, an air pump, through holes, a smooth limiting layer, a limiting leveler. This patent and the prior art both use the horizontal roll pressing method to laminate the packaging bag. The horizontal roll pressing is usually suitable for the lamination of two material layers. Because its working principle is to apply uniform pressure on a plane, it is suitable for processing two relatively flat material layers. If three or more material layers need to be laminated, the contact and pressure distribution between multiple lamination layers become complex, resulting in difficulty in ensuring that each layer can be evenly and firmly adhered. At the same time, when laminating multiple layers, especially for 5-layer or 7-layer food packaging bags, due to too many layers, air bubbles are easily generated inside during one-time pressing, affecting the lamination quality. Summary of the Invention

[0004] The purpose of the present invention is: to solve the above problems, the present invention provides a lamination device for food packaging bag printing.

[0005] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0006] A lamination device for food packaging bag printing, including a frame assembly. On the left side of the frame assembly, a set of unwind rollers and multiple sets of lamination rollers are vertically and rotatably installed. The multiple sets of lamination rollers are designed to be inclined outward. On the right side of the frame assembly, a winding roller is vertically and rotatably installed. The winding roller is driven by a motor;

[0007] A bottom collecting component is fixedly installed in the middle of the frame component. The bottom collecting component can collect the bottom ends of multiple layers of packaging bags. A glue adding component is erected directly above the bottom collecting component. The glue adding component can add glue into the multiple layers of packaging bags. A rolling pressing component is arranged on the right side of the bottom collecting component. The rolling pressing component is designed obliquely. An upper sealing glue part is arranged at the top of the frame component. The upper sealing glue part is located on the left side of the rolling pressing component. Multiple groups of scraping blades are arranged at the bottom of the upper sealing glue part. The upper sealing glue part can reciprocally slide along the top of the multiple layers of packaging bags, and the scraping blades are inserted into the multiple layers of packaging bags.

[0008] Further, the bottom collecting component includes a fixed frame and a movable frame. The fixed frame is fixedly installed on the frame component. A first hydraulic cylinder is fixedly installed on the outer side of the fixed frame. The movable frame is fixedly installed on the telescopic end of the first hydraulic cylinder. Multiple groups of bottom collecting wheel discs are rotatably installed on the tops of the fixed frame and the movable frame.

[0009] Further, the rolling pressing component includes two swing frames. The two swing frames are installed in the frame component. A fixed pressing roller is rotatably installed between the two swing frames. Adjusting sliders are slidably connected inside the two swing frames. A second hydraulic cylinder is fixedly installed on the outer side of the swing frame. The telescopic end of the second hydraulic cylinder is fixedly installed on the adjusting slider. An adjusting pressing roller is rotatably installed between the two adjusting sliders.

[0010] Further, two guide rails are arranged at the top of the frame component. Stopping columns are arranged on both sides of the upper sealing glue part. Guide sliders are arranged on the outer sides of the stopping columns. The two guide sliders are respectively slidably connected in the two guide rails. A top spring is arranged between the guide slider and the inner wall of the guide rail. The swing frame can swing up and down.

[0011] Further, a driving motor is fixedly installed inside the frame component. A crank wheel is fixedly installed at the output end of the driving motor. A crank rod is hinged to the outer side of the crank wheel. A base is fixedly installed inside the frame component. A toothed rod is slidably connected inside the base. The end of the crank rod far from the crank wheel is hinged to the toothed rod. The lower swing frame is rotatably installed in the frame component. A swing wheel is fixedly installed on the outer side of the lower swing frame. The swing wheel meshes with the toothed rod.

[0012] Further, a stabilizing rail is arranged at the top of the frame component. The stabilizing rail is designed as an arc. The center of the arc coincides with the rotation center of the lower swing frame. A guide post is arranged on the outer side of the upper swing frame. The guide post is slidably connected in the stabilizing rail.

[0013] Further, the lengths of the fixed pressing roller and the adjusting pressing roller are greater than the width of the multiple layers of packaging bags.

[0014] Furthermore, the glue - adding assembly includes multiple groups of glue tanks erected directly above the bottom - closing assembly. A glue conveyor is fixedly installed at the outlet of the glue tank, and a glue - spraying head is arranged at the outlet of the glue conveyor. Multiple groups of glue - spraying heads are inserted into multiple layers of packaging bags, and their bottom ends are designed to incline inwards.

[0015] Furthermore, one ends of multiple groups of the scraping blades close to the rolling - pressing assembly incline inwards together.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention adopts the way of vertical - inclined rolling - pressing, which can roll and press from the lower direction to the upper direction of the composite packaging bag. The inclined rolling - pressing design helps to provide continuous and uniform pressure when the material passes through the rolling - pressing, avoiding uneven pressure in some areas. At the same time, the vertical - inclined rolling - pressing helps air to be effectively discharged when passing through the roller, reducing the generation of bubbles, thereby improving the composite quality and being applicable to the composite of packaging bags with more than five layers.

[0018] 2. By adopting the setting of the vertical - inclined composite roller in the present invention, multiple layers of packaging are fan - shaped unfolded. The bottom - closing assembly closes the bottom of the packaging bag, and the glue - adding assembly injects glue into multiple layers of packaging bags from the upper direction. Then, through the way of vertical - inclined rolling - pressing, the glue can be evenly distributed from bottom to top. Therefore, there is no need to set up a glue - spreading roller, and the equipment structure is compact.

[0019] 3. Through the setting of the upper glue - sealing part in the present invention, before glue - sealing, the upper glue - sealing part restricts the glue, so that there is a certain distance between the glue and the top of the packaging bag. During subsequent rolling - pressing, the glue can just be pressed to the top of multiple layers of packaging bags. At the same time, the bottom - closing height of the bottom - closing assembly is the same as the restricted distance of the upper glue - sealing part, ensuring that neither too much glue will be squeezed out from the top nor the bottom of the packaging bag, saving glue and having high composite quality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 is the structural distribution schematic diagram of the glue - applying assembly of the present invention;

[0022] Figure 3 is the driving - structure schematic diagram of the bottom - closing assembly and the rolling - pressing assembly of the present invention;

[0023] Figure 4 is the structural schematic diagram of the rolling - pressing assembly of the present invention;

[0024] Figure 5 is the structural schematic diagram of the upper glue - sealing part of the present invention;

[0025] Figure 6 is the distribution schematic diagram of the unwinding roller, the composite roller and the winding roller of the present invention.

[0026] Reference numerals: 1, unwinding roller; 2, compounding roller; 3, winding roller; 4, bottom collecting assembly; 41, fixing frame; 42, first hydraulic cylinder; 43, movable frame; 44, bottom collecting wheel disc; 5, roller pressing assembly; 51, swing frame; 52, swing wheel; 53, fixed pressing roller; 54, adjusting slider; 55, second hydraulic cylinder; 56, adjusting pressing roller; 57, guide post; 6, glue adding assembly; 61, glue tank; 62, glue conveyor; 63, glue spraying head; 7, guide rail; 8, upper glue sealing member; 81, scraping blade; 82, retaining post; 83, guiding slider; 84, top spring; 9, stabilizing rail; 10, crank wheel; 11, crank rod; 12, base; 13, toothed rod. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] Embodiment 1, as Figures 1-6 shown, a compounding device for printing food packaging bags includes a frame assembly. A set of unwinding rollers 1 and multiple sets of compounding rollers 2 are vertically and rotatably installed on the left side of the frame assembly. The multiple sets of compounding rollers 2 are designed to be inclined outwards. A winding roller 3 is vertically and rotatably installed on the right side of the frame assembly, and the winding roller 3 is driven by a motor;

[0029] A bottom collecting assembly 4 is fixedly installed in the middle of the frame assembly. The bottom collecting assembly 4 can gather the bottoms of multiple layers of packaging bags. A glue adding assembly 6 is installed above the bottom collecting assembly 4. The glue adding assembly 6 can add glue into multiple layers of packaging bags. A roller pressing assembly 5 is arranged on the right side of the bottom collecting assembly 4. The roller pressing assembly 5 is designed to be inclined. An upper glue sealing member 8 is arranged on the top of the frame assembly. The upper glue sealing member 8 is located on the left side of the roller pressing assembly 5. Multiple scraping blades 81 are arranged at the bottom of the upper glue sealing member 8. The upper glue sealing member 8 can reciprocally slide along the top of multiple layers of packaging bags, and the scraping blades 81 are inserted into multiple layers of packaging bags.

[0030] Further, one ends of the multiple scraping blades 81 close to the roller pressing assembly 5 are gathered inwards. Through this design, the scraping blades 81 can fit multiple layers of packaging bags better, and the glue scraping effect is better.

[0031] The middle layer is wound around the unwinding roller 1 and the winding roller 3, and the middle layer remains in a vertical state. The remaining outer layers are respectively wound around the compounding roller 2. Due to the outward inclination design of multiple sets of compounding rollers 2, the multi-layer packaging bags located on the left side of the rolling component 5 are distributed in a fan shape, with a large opening at the top and a small opening at the bottom. At the same time, when the fan-shaped multi-layer packaging bags pass through the bottom closing component 4, the bottom ends are tightly pressed together. The glue adding component 6 adds glue from above the multi-layer packaging bags. Since the multi-layer packaging bags are distributed in a fan shape and the opening at the top is large, the corresponding glue can be added between the corresponding composite films respectively, and a certain amount of glue is added. The glue deposits at the bottom of the multi-layer packaging bags. Subsequently, the multi-layer packaging bags with added glue pass through the rolling component 5. Due to the inclined design of the rolling component 5, it can roll and press from the bottom of the packaging bag upward, and squeeze the glue from bottom to top, which can expel the air bubbles between the multi-layer composite films and make the glue evenly distributed between the composite films. Through the rolling method of the present invention, there is no need to set up a coating roller. For a horizontal rolling equipment, for each additional layer of composite film, a set of coating rollers needs to be added, which will cause the equipment structure to be too bulky, and the coating roller will cause glue waste.

[0032] It should be noted that the contact height between the bottom closing component 4 and the bottom end of the multi-layer packaging bag is the same as the height of the scraping blade 81, and this height is preset so that when the subsequent packaging bag passes through the rolling component 5, the glue can be just squeezed to the edge of the packaging bag. Therefore, it can prevent glue waste, and there is no need to additionally set up a glue removing component, with high composite quality and glue saving. At the same time, during the composite process, the glue is squeezed from bottom to top, which easily causes the glue to be squeezed out from above. Therefore, through the setting of the upper glue sealing part 8 and the scraping blade 81, the glue can be limited, so that the glue can only reach a certain height upward. At the same time, the upper glue sealing part 8 can reciprocally slide along the top of the packaging bag, and can push and scrape the excess glue to the left, so that the glue enters the larger space on the left, and no glue waste will be caused.

[0033] Embodiment 2, on the basis of the above embodiment, further includes that the bottom closing component 4 includes a fixed frame 41 and a movable frame 43. The fixed frame 41 is fixedly installed on the frame assembly. A hydraulic cylinder 42 is fixedly installed on the outside of the fixed frame 41. The movable frame 43 is fixedly installed on the telescopic end of the hydraulic cylinder 42. Multiple sets of bottom closing wheel discs 44 are rotatably installed on the tops of the fixed frame 41 and the movable frame 43.

[0034] By controlling the operation of the hydraulic cylinder 42, the hydraulic cylinder 42 drives the movable frame 43 to approach the fixed frame 41, and the bottom ends of the multi-layer packaging bags are squeezed together through the bottom closing wheel discs 44. And the height of the bottom closing wheel discs 44 is the preset height. When the multi-layer packaging bags move, the bottom closing wheel discs 44 can roll and press the multi-layer packaging bags.

[0035] Embodiment 3, on the basis of the above embodiments, further includes that the rolling component 5 includes two groups of swing frames 51. The two groups of swing frames 51 are installed in the frame component. A fixed pressing roller 53 is rotatably installed between the two groups of swing frames 51. Adjusting sliders 54 are slidably connected inside the two groups of swing frames 51. A second hydraulic cylinder 55 is fixedly installed on the outside of the swing frame 51. The telescopic end of the second hydraulic cylinder 55 is fixedly installed on the adjusting slider 54. An adjusting pressing roller 56 is rotatably installed between the two groups of adjusting sliders 54.

[0036] By controlling the operation of the second hydraulic cylinder 55, the second hydraulic cylinder 55 drives the adjusting slider 54 to slide, and the adjusting slider 54 drives the adjusting pressing roller 56 to move, thereby being able to adjust the rolling distance.

[0037] Embodiment 4, on the basis of the above embodiments, further includes that two groups of guide rails 7 are arranged on the top of the frame component. Stopping columns 82 are arranged on both sides of the upper sealing member 8. Guide sliders 83 are arranged on the outside of the stopping columns 82. The two groups of guide sliders 83 are respectively slidably connected in the two groups of guide rails 7. A top spring 84 is arranged between the guide slider 83 and the inner wall of the guide rail 7, and the swing frame 51 can swing up and down.

[0038] Furthermore, the lengths of the fixed pressing roller 53 and the adjusting pressing roller 56 are greater than the width of the multi-layer packaging bag. Through this design, when the rolling component 5 swings up and down, it will not interfere with the packaging bag.

[0039] During the rolling process, control the swing frame 51 to swing up and down. When the swing frame 51 swings upward, the swing frame 51 drives the fixed pressing roller 53 and the adjusting pressing roller 56 to swing upward. At this time, the fixed pressing roller 53 and the adjusting pressing roller 56 move relative to the packaging bag, performing more effective rolling on the packaging bag. At the same time, the fixed pressing roller 53 and the adjusting pressing roller 56 push the upper sealing member 8 to slide to the left through the stopping column 82. The upper sealing member 8 pushes the glue to the left through the scraping blade 81, pushing the glue to a larger space so that the glue will not overflow. When the swing frame 51 swings downward, the second hydraulic cylinder 55 drives the adjusting slider 54 to slide, and the adjusting slider 54 drives the adjusting pressing roller 56 to move away from the fixed pressing roller 53. At this time, the packaging bag is not rolled, and the glue is not rolled upward. At the same time, the top spring 84 pushes the upper sealing member 8 to slide to the right, and the scraping blade 81 does not push the glue. Therefore, there is no need to additionally set a drive for the upper sealing member 8, and the glue will not overflow from the right side, and the upper sealing effect is good. It should be noted that the swinging speed of the swing frame 51 is much greater than the conveying speed of the packaging bag. During the reciprocating swinging process, there will be no situation of missed rolling, but instead, the multi-layer packaging bag can be rolled multiple times, and the composite quality is higher.

[0040] Embodiment 5. On the basis of the above embodiments, it further includes that a driving motor is fixedly installed inside the frame assembly. A crank wheel 10 is fixedly installed at the output end of the driving motor. A crank rod 11 is hinged to the outside of the crank wheel 10. A base 12 is fixedly installed inside the frame assembly. A toothed rod 13 is slidably connected inside the base 12. One end of the crank rod 11 away from the crank wheel 10 is hinged to the toothed rod 13. The lower swing frame 51 is rotatably installed in the frame assembly. A pendulum wheel 52 is fixedly installed on the outside of the lower swing frame 51. The pendulum wheel 52 meshes with the toothed rod 13.

[0041] By controlling the energization of the driving motor, the driving motor drives the crank wheel 10 to rotate. The crank wheel 10 drives the toothed rod 13 to reciprocate through the crank rod 11. The toothed rod 13 drives the lower swing frame 51 to swing up and down through the pendulum wheel 52.

[0042] Furthermore, a stabilizing rail 9 is provided at the top of the frame assembly. The stabilizing rail 9 is designed in an arc shape. The center of the arc coincides with the rotation center of the lower swing frame 51. A guide post 57 is provided on the outside of the upper swing frame 51. The guide post 57 is slidably connected in the stabilizing rail 9.

[0043] Embodiment 6. On the basis of the above embodiments, it further includes that the glue application assembly 6 includes multiple groups of glue tanks 61 erected directly above the bottom receiving assembly 4. A glue conveyor 62 is fixedly installed at the outlet of the glue tank 61. A glue spraying head 63 is provided at the outlet of the glue conveyor 62. Multiple groups of glue spraying heads 63 are all inserted into multiple layers of packaging bags, and the bottom ends are all designed to be inclined inward.

[0044] Through this design, the glue spraying head 63 can better extend between the packaging bag composite films, spray glue at the bottom of the packaging bag composite films, and there will be no excess glue remaining on the composite films in advance, and the glue application effect is better.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A composite device for food packaging bag printing, comprising a frame assembly, characterized in that, On the left side of the frame assembly, a set of unwinding rollers (1) and multiple sets of compound rollers (2) are vertically and rotatably installed. The multiple sets of compound rollers (2) are designed to be inclined outward. On the right side of the frame assembly, a winding roller (3) is vertically and rotatably installed, and the winding roller (3) is driven by a motor. In the middle of the frame assembly, a bottom collecting component (4) is fixedly installed. The bottom collecting component (4) can gather the bottom ends of multiple layers of packaging bags. Above the bottom collecting component (4), a glue adding component (6) is erected. The glue adding component (6) can add glue into the multiple layers of packaging bags. On the right side of the bottom collecting component (4), a rolling pressure component (5) is arranged. The rolling pressure component (5) is inclined. On the top of the frame assembly, an upper sealing glue part (8) is arranged. The upper sealing glue part (8) is located on the left side of the rolling pressure component (5). Multiple sets of scraping blades (81) are arranged at the bottom of the upper sealing glue part (8). The upper sealing glue part (8) can reciprocally slide along the top of the multiple layers of packaging bags, and the scraping blades (81) are inserted into the multiple layers of packaging bags.

2. The composite device for printing food packaging bags according to claim 1, characterized in that, The bottom collecting component (4) includes a fixed frame (41) and a movable frame (43). The fixed frame (41) is fixedly installed on the frame assembly. A hydraulic cylinder one (42) is fixedly installed on the outer side of the fixed frame (41). The movable frame (43) is fixedly installed on the telescopic end of the hydraulic cylinder one (42). Multiple sets of bottom collecting discs (44) are rotatably installed on the tops of both the fixed frame (41) and the movable frame (43).

3. The composite device for food packaging bag printing according to claim 1, characterized in that, The rolling pressure component (5) includes two swing frames (51). The two swing frames (51) are installed in the frame assembly. A fixed pressing roller (53) is rotatably installed between the two swing frames (51). Adjusting sliders (54) are slidably connected inside the two swing frames (51). A hydraulic cylinder two (55) is fixedly installed on the outer side of the swing frame (51). The telescopic end of the hydraulic cylinder two (55) is fixedly installed on the adjusting slider (54). An adjusting pressing roller (56) is rotatably installed between the two adjusting sliders (54).

4. The composite device for food packaging bag printing according to claim 3, characterized in that, Two guide rails (7) are arranged on the top of the frame assembly. Stopping columns (82) are arranged on both sides of the upper sealing glue part (8). Guide sliders (83) are arranged on the outer sides of the stopping columns (82). The two guide sliders (83) are respectively slidably connected in the two guide rails (7). A top spring (84) is arranged between the guide slider (83) and the inner wall of the guide rail (7). The swing frame (51) can swing up and down.

5. A composite device for food packaging bag printing according to claim 4, characterized in that, A driving motor is fixedly installed inside the frame assembly. The output end of the driving motor is fixedly installed with a crank wheel (10). A crank rod (11) is hinged to the outer side of the crank wheel (10). A base (12) is fixedly installed inside the frame assembly. A toothed rod (13) is slidably connected inside the base (12). The end of the crank rod (11) far away from the crank wheel (10) is hinged to the toothed rod (13). The lower swing frame (51) is rotatably installed in the frame assembly. A swing wheel (52) is fixedly installed on the outer side of the lower swing frame (51). The swing wheel (52) is meshed with the toothed rod (13).

6. The composite device for food packaging bag printing according to claim 5, characterized in that, A stabilizing rail (9) is provided at the top of the frame assembly. The stabilizing rail (9) is designed in an arc shape, and the center of the arc coincides with the rotation center of the lower swing frame (51). A guide post (57) is provided on the outer side of the upper swing frame (51), and the guide post (57) is slidably connected in the stabilizing rail (9).

7. The composite device for printing food packaging bags according to claim 6, wherein, The lengths of the fixed pressing roller (53) and the adjusting pressing roller (56) are greater than the width of the multi-layer packaging bag.

8. A composite device for food packaging bag printing according to claim 1, characterized in that, The glue adding assembly (6) includes multiple groups of glue tanks (61) erected directly above the bottom closing assembly (4). A glue conveyor (62) is fixedly installed at the outlet of the glue tank (61). A glue spraying head (63) is provided at the outlet of the glue conveyor (62). Multiple groups of glue spraying heads (63) are all inserted into the multi-layer packaging bag, and the bottom ends are all designed to incline inwards.

9. The composite device for food packaging bag printing according to claim 1, wherein, One ends of multiple groups of the scraping blades (81) close to the rolling and pressing assembly (5) are brought together inwards.

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