Laminating machine for producing paper-plastic compound bag

Abstract

The utility model relates to the field of paper-plastic composite bag production, in particular to a laminating machine for paper-plastic composite bag production, which comprises an extrusion roller group for extruding kraft paper and a plastic film, a conveying roller group for conveying the kraft paper to the extrusion roller group, and a cleaning device positioned between the conveying roller group and the extrusion roller group, the cleaning device comprises a cleaning support, a scraping assembly and a dust sticking assembly, the scraping assembly and the dust sticking assembly are sequentially installed on the cleaning support in the moving direction of the kraft paper, the scraping assembly is used for conducting preliminary cleaning on impurities on the surface, making contact with the plastic film, of the kraft paper, and the dust sticking assembly is used for conducting secondary cleaning on the kraft paper surface subjected to preliminary cleaning. Impurities such as tiny chippings on the surface of kraft paper are doubly cleaned through the cleaning assembly and the bonding assembly, so that impurity residues at the bonding position of the kraft paper and a plastic film are reduced as much as possible, and the finished product quality of a paper-plastic composite bag is improved.

Description

Technical Field

[0001] The present application relates to the field of paper-plastic composite bag production, and in particular to a laminating machine for paper-plastic composite bag production. Background Art

[0002] Paper-plastic composite bags are usually made of kraft paper and plastic film. Due to the toughness of kraft paper and the characteristics of plastic film, paper-plastic composite bags have certain structural strength and waterproofness, so they are widely used in medical, chemical and food industries.

[0003] When producing paper-plastic composite bags, the laminating machine can glue kraft paper and plastic film with hot-melt glue to form a composite layer, and then roll up the laminated layer. The rolled composite layer will be cut, sewn and other processes to form the finished paper-plastic composite bag.

[0004] When kraft paper is pasted with plastic film, due to environmental factors and other factors, there may be impurities on the side where the kraft paper and the plastic film are pasted. If they are not removed in time, the impurities will remain between the kraft paper and the plastic film during bonding, causing the bonded composite layer to become uneven. At the very least, it will affect the flatness and aesthetics of the paper-plastic composite bag. At worst, it will affect the structural strength and sealing degree of the paper-plastic composite bag, affecting the quality of the finished product of the paper-plastic composite bag. Utility Model Content

[0005] In order to minimize the residual impurities at the pasting point of kraft paper and plastic film and improve the quality of the finished paper-plastic composite bag, the present application provides a laminating machine for the production of paper-plastic composite bags.

[0006] The present application provides a laminating machine for producing paper-plastic composite bags, which adopts the following technical solution:

[0007] A laminating machine for producing paper-plastic composite bags comprises an extrusion roller group for extruding kraft paper and plastic film and a conveying roller group for conveying the kraft paper to the extrusion roller group, and also comprises a cleaning device located between the conveying roller group and the extrusion roller group, the cleaning device comprising a cleaning bracket and a scraping component and a dust sticking component sequentially installed on the cleaning bracket along the moving direction of the kraft paper, the scraping component is used for preliminarily cleaning impurities on the surface of the kraft paper in contact with the plastic film, and the dust sticking component is used for secondary cleaning of the preliminarily cleaned kraft paper surface.

[0008] By adopting the above technical solution, the scraping component and the dust sticking component are used to double clean the impurities such as fine debris on the surface of the kraft paper, thereby minimizing the impurity residue at the adhesion point of the kraft paper and the plastic film, and improving the quality of the finished product of the paper-plastic composite bag.

[0009] Optionally, the scraping assembly includes a support roller and a first scraper located above the support roller, a gap is provided between the support roller and the first scraper for kraft paper to pass through, the bottom end of the first scraper is in sliding contact with the surface of the kraft paper, and the bottom end of the first scraper is a first inclined surface inclined from bottom to top in a direction away from the dust-sticking assembly.

[0010] By adopting the above technical solution, the first scraper and the first inclined surface can scrape away impurities on the surface of the kraft paper during the movement of the kraft paper. The support roller can support the kraft paper from which the impurities have been scraped. The scraped impurities can be guided away from the kraft paper by the first inclined surface, thereby reducing the amount of impurities flying around due to the scraping action.

[0011] Optionally, a dust hood is arranged above the first scraper, the opening of the dust hood is downward and facing the first inclined surface, a dust pipe is arranged above the dust hood, the dust pipe is connected to a dust collecting box, and an exhaust fan connected to the dust pipe is arranged in the dust collecting box.

[0012] By adopting the above technical solution, the impurities accumulated on the first inclined surface can be sucked into the dust hood in time by the exhaust fan, and enter the dust box through the dust suction pipe for collection, so as to prevent the impurities from flying and affecting the cleaning effect of the kraft paper.

[0013] Optionally, the first scraper is provided with a second scraper on both horizontal sides perpendicular to the moving direction of the kraft paper. The second scraper is arranged perpendicular to the first scraper, and a gap for the kraft paper to pass through is provided between the two second scrapers. The second scraper is in sliding contact with the kraft paper, and a second inclined surface is provided at the end of the second scraper away from the first scraper. The second inclined surface is arranged obliquely along the moving direction of the kraft paper in a direction away from the kraft paper.

[0014] By adopting the above technical solution, the edge of the kraft paper can be repaired by the second scraper, so that the impurities on the kraft paper can be further cleaned and the amount of impurities adhering to the kraft paper can be reduced.

[0015] Optionally, a chip collecting plate is provided below the second scraper, and a chip collecting groove is provided on the upper surface of the chip collecting plate facing the second scraper.

[0016] By adopting the above technical solution, the edge debris of the kraft paper scraped off by the second scraper can be collected through the chip collecting groove, so as to reduce the impact on the overall working environment.

[0017] Optionally, the first scraper is provided with an adjusting rail that is slidably connected to the second scraper, and the adjusting rail is horizontally arranged along a direction perpendicular to the movement of the kraft paper. The first scraper is rotatably connected to an adjusting screw, and the adjusting screw is arranged along the sliding direction of the second scraper. Adjusting bearings that are coaxially rotatably connected to the adjusting screw are installed at both ends of the adjusting rail, and the adjusting rail is threadedly connected to the adjusting screw.

[0018] By adopting the above technical solution, the second scraper is driven to slide by rotating the adjusting screw to adjust the distance between the two second scrapers, so that the position can be flexibly adjusted according to the size and position of the kraft paper.

[0019] Optionally, the dust-binding component includes an adhesive roller rotatably mounted on a cleaning bracket, the adhesive roller is located on the side of the support roller facing the extrusion roller group, the adhesive roller is located above the kraft paper, and a coaxial sleeve on the adhesive roller is provided with a silicone dust-removing sleeve that contacts the surface of the kraft paper and is used to adhere to debris on the surface of the kraft paper.

[0020] By adopting the above technical solution, the silicone dust removal rubber sleeve can adhere to the debris and impurities remaining on the kraft paper, thereby performing secondary cleaning of the kraft paper.

[0021] Optionally, a guide roller is arranged on the side of the bonding roller facing away from the supporting roller, and the supporting roller, bonding roller and guide roller are arranged in a "V" shape, and the guide roller is located obliquely above the extrusion roller group.

[0022] By adopting the above technical solution, through the arrangement of the guide roller and the support roller relative to the bonding roller, the contact area and proximity force between the kraft paper and the silicone dust removal sleeve can be increased during the movement, thereby increasing the adhesion strength of impurities on the kraft paper and further reducing the number of impurities on the kraft paper.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The scraping component and the dust sticking component are used to double clean the fine debris and other impurities on the surface of the kraft paper, thereby minimizing the impurity residue at the adhesion point between the kraft paper and the plastic film and improving the quality of the finished paper-plastic composite bag;

[0025] 2. The first scraper and the first inclined surface can scrape away impurities on the surface of the kraft paper during the movement of the kraft paper. The scraped impurities can be guided away from the kraft paper by the first inclined surface, thereby reducing the amount of impurities flying around due to the scraping action;

[0026] 3. The silicone dust removal sleeve can adhere to the debris and impurities remaining on the kraft paper, thereby performing a secondary cleaning of the kraft paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the positions of the scraping component and the dust sticking component in the embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the scraping component in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the connection between the first scraper and the second scraper in the embodiment of the present application.

[0031] Description of reference numerals:

[0032] 100, squeezing roller set; 200, conveying roller set; 300, cleaning device; 400, kraft paper;

[0033] 1. Cleaning bracket; 2. Scraping assembly; 21. Support roller; 22. First scraper; 221. First inclined plane; 23. Second scraper; 231. Second inclined plane; 24. Chip collecting plate; 241. Chip collecting groove; 25. Adjusting slide rail; 26. Adjusting screw; 27. Adjusting bearing; 28. Handle; 3. Dust sticking assembly; 31. Adhesive roller; 32. Silicone dust removal rubber sleeve; 33. Guide roller; 4. Dust suction assembly; 41. Dust hood; 42. Dust suction pipe; 43. Dust collecting box; 431. Air outlet; 44. Exhaust fan; 45. Filter. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] The embodiment of the present application discloses a laminating machine for producing paper-plastic composite bags.

[0037] Reference Figure 1 and Figure 2The laminating machine includes a squeezing roller group 100, a cleaning device 300 and a conveying roller group 200. When the kraft paper 400 moves on the laminating machine, it will pass through the conveying roller group 200, the cleaning device 300 and the squeezing roller group 100 in sequence. The conveying roller group 200 guides the kraft paper 400 to move in the direction close to the squeezing roller group 100, and tensions the kraft paper 400 to reduce the number of wrinkles of the kraft paper 400 when it moves. During the movement of the kraft paper 400, the cleaning device 300 is used to clean the surface of the kraft paper 400, and then the kraft paper 400 moves to the squeezing roller group 100 and is pasted and compounded with the plastic film. This can minimize the impurities remaining at the pasting point of the kraft paper 400 and the plastic film, and improve the quality of the finished paper-plastic composite bag.

[0038] When cleaning kraft paper 400, Figure 1 and Figure 2 As shown, the cleaning device 300 includes a cleaning bracket 1, a scraping component 2, a dust suction component 4 and a dust sticking component 3.

[0039] The scraping assembly 2 includes a support roller 21 , a first scraper 22 located above the support roller 21 , and two second scrapers 23 .

[0040] A gap is provided between the support roller 21 and the first scraper 22 for the kraft paper 400 to pass through. The bottom end of the first scraper 22 is a first inclined surface 221 inclined from bottom to top in a direction away from the adhesive assembly. The bottom end of the first scraper 22 is in sliding contact with the surface of the kraft paper 400 to facilitate scraping off impurities on the surface of the kraft paper 400 when the kraft paper 400 passes through.

[0041] The two second scrapers 23 are respectively located on both sides of the first scraper 22 along the direction perpendicular to the moving direction of the kraft paper 400. A gap is provided between the two second scrapers 23 for the kraft paper 400 to pass through, so that the second scrapers 23 slide and abut against the side of the kraft paper 400. The second scraper 23 is provided with a second inclined surface 231 at one end away from the first scraper 22. The second inclined surface 231 is arranged obliquely in the moving direction of the kraft paper 400 away from the kraft paper 400. When the kraft paper 400 moves, the second inclined surface 231 abuts against the side of the kraft paper 400 to repair the burrs, debris and other impurities on the side of the kraft paper 400, thereby further reducing the number of impurities adhering to the kraft paper 400.

[0042] In order to flexibly adjust the bonding strength between the two second scrapers 23 and the kraft paper 400, refer to Figure 2 and Figure 3The first scraper 22 is provided with an adjustment rail 25 slidably connected to the second scraper 23. The adjustment rail 25 is arranged horizontally in a direction perpendicular to the moving direction of the kraft paper 400, so that one of the second scrapers 23 can slide in a direction close to or away from the other second scraper 23. Adjustment bearings 27 coaxially rotatably connected to the adjustment screw 26 are installed at both ends of the adjustment rail 25 on the first scraper 22, so that the adjustment screw 26 is arranged along the sliding direction of the second scraper 23, and the second scraper 23 and the adjustment screw 26 are threadedly connected, and one end of the adjustment screw 26 is connected to a handle 28. By rotating the handle 28, the position and distance of the two second scrapers 23 can be adjusted, so as to flexibly adjust the cleaning force on the edge of the kraft paper 400.

[0043] The first scraper 22 and the second scraper 23 are preferably metal cutters, which can minimize damage to the kraft paper 400 while ensuring sharpness.

[0044] When the first scraper 22 scrapes the impurities on the surface of the kraft paper 400, the impurities are accumulated on the kraft paper 400 that has not been scraped. In order to collect these impurities, a dust collecting assembly 4 is arranged above the first scraper 22. Figure 2 and Figure 4 The dust collection assembly 4 includes a dust collection cover 41, a dust collection pipe 42, a dust collection box 43 and an exhaust fan 44.

[0045] The dust hood 41 is installed on the cleaning bracket 1 and is located above the first scraper 22. The dust hood 41 opens downward and faces the first inclined surface 221, so as to collect the impurities scraped off the first inclined surface 221 in time. One end of the dust suction pipe 42 is connected to the top of the dust hood 41, and the other end of the dust suction pipe 42 is connected to the dust box 43. The exhaust fan 44 is placed in the dust box 43, and the air outlet of the exhaust fan 44 faces the port of the dust suction pipe 42, so as to extract the impurities at the first scraper 22. The impurities enter the dust box 43 through the dust suction pipe 42, and then fall into the dust box 43 for collection. The top of the dust box 43 is provided with an air outlet 431 and a filter 45 is installed at the air outlet 431. The filter 45 can prevent the impurities in the dust box 43 from leaking and balance the air pressure in the dust box 43, so as to continuously suck the impurities at the first scraper 22 into the dust box 43.

[0046] In addition, since the impurities scraped off by the second scraper 23 will be away from the kraft paper 400, in order to collect the impurities scraped off by the second scraper 23, refer to Figure 3 and Figure 4 A chip collecting plate 24 is provided below the second scraper 23 . A chip collecting groove 241 is provided at the upper end surface of the chip collecting plate 24 facing the second scraper 23 , so that the scraped impurities can fall into the chip collecting groove 241 and be collected.

[0047] Reference Figure 1The bonding assembly includes a bonding roller 31 and a guide roller 33 rotatably mounted on the cleaning bracket 1. The bonding roller 31 and the guide roller 33 are arranged at intervals along the moving track of the kraft paper 400, and the station pipe is located between the support roller 21 and the guide roller 33. After the kraft paper 400 passes from above the support roller 21, it passes under the bonding roller 31 and above the guide roller 33 in turn. The bonding roller 31 and the guide roller 33 are both in contact with the kraft paper 400. The movement of the kraft paper 400 drives the bonding roller 31 and the guide roller 33 to rotate. The bonding roller 31 is coaxially sleeved with a silicone dust-removing rubber sleeve 32 in contact with the surface of the kraft paper 400. The silicone dust-removing rubber sleeve 32 is used to adhere to the debris on the surface of the kraft paper 400, so as to facilitate secondary cleaning of the fine paper scraps on the surface of the kraft paper 400.

[0048] In order to increase the contact area and strength between the silicone dust removal rubber sleeve 32 and the kraft paper 400, the support roller 21, the bonding roller 31 and the guide roller 33 are arranged in a "V" shape, and the guide roller 33 is located obliquely above the extrusion roller group 100, so that the silicone dust removal rubber sleeve 32 adheres to the area of ​​​​fine paper scraps and other impurities on the surface of the kraft paper 400, so as to increase the adhesion strength to the impurities on the kraft paper 400 and further reduce the number of impurities on the kraft paper 400.

[0049] The implementation principle of a laminating machine for producing paper-plastic composite bags in an embodiment of the present application is as follows: when the kraft paper 400 moves to the squeezing roller group 100 through the conveying roller group 200, the kraft paper 400 first passes through the second scraper 23 to repair the edge impurities, and then passes through the first scraper 22 to scrape off the surface impurities. At the same time, the exhaust fan 44 is turned on to promptly draw the impurities scraped off by the first scraper 22 into the dust collecting box 43 for collection. Then, the kraft paper 400 passes through the silicone dust removal rubber sleeve 32, which contacts the surface of the kraft paper 400 from which the impurities have just been scraped off, and adheres impurities such as fine paper scraps on the surface of the kraft paper 400, thereby minimizing the impurity residue at the bonding point of the kraft paper 400 and the plastic film, and improving the quality of the finished paper-plastic composite bag.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laminating machine for producing paper-plastic composite bags, comprising an extrusion roller group (100) for extruding kraft paper (400) and plastic film and a conveying roller group (200) for conveying the kraft paper (400) to the extrusion roller group (100), characterized in that: The invention also comprises a cleaning device (300) located between the conveying roller group (200) and the squeezing roller group (100), wherein the cleaning device (300) comprises a cleaning bracket (1) and a scraping component (2) and a dust-binding component (3) which are sequentially mounted on the cleaning bracket (1) along the moving direction of the kraft paper (400), wherein the scraping component (2) is used for performing preliminary cleaning of impurities on the surface of the kraft paper (400) in contact with the plastic film, and the dust-binding component (3) is used for performing secondary cleaning of the surface of the kraft paper (400) that has been preliminary cleaned.

2. A laminating machine for producing paper-plastic composite bags according to claim 1, characterized in that: The scraping assembly (2) comprises a supporting roller (21) and a first scraper (22) located above the supporting roller (21); a gap is provided between the supporting roller (21) and the first scraper (22) for the kraft paper (400) to pass through; the bottom end of the first scraper (22) is in sliding contact with the surface of the kraft paper (400); the bottom end of the first scraper (22) is a first inclined surface (221) inclined from bottom to top in a direction away from the dust sticking assembly (3).

3. A laminating machine for producing paper-plastic composite bags according to claim 2, characterized in that: A dust hood (41) is arranged above the first scraper (22), the dust hood (41) opens downward and faces the first inclined surface (221), a dust suction pipe (42) is arranged above the dust hood (41), the dust suction pipe (42) is connected to a dust collecting box (43), and an exhaust fan (44) connected to the dust suction pipe (42) is arranged in the dust collecting box (43).

4. A laminating machine for producing paper-plastic composite bags according to claim 2, characterized in that: The first scraper (22) is provided with second scrapers (23) on both sides of the horizontal plane perpendicular to the moving direction of the kraft paper (400). The second scraper (23) is arranged perpendicular to the first scraper (22). A gap is provided between the two second scrapers (23) for the kraft paper (400) to pass through. The second scraper (23) is in sliding contact with the kraft paper (400). A second inclined surface (231) is provided at one end of the second scraper (23) away from the first scraper (22). The second inclined surface (231) is arranged obliquely along the moving direction of the kraft paper (400) in a direction away from the kraft paper (400).

5. A laminating machine for producing paper-plastic composite bags according to claim 4, characterized in that: A chip collecting plate (24) is provided below the second scraper (23), and a chip collecting groove (241) is provided on the upper end surface of the chip collecting plate (24) directly facing the second scraper (23).

6. A laminating machine for producing paper-plastic composite bags according to claim 4, characterized in that: The first scraper (22) is provided with an adjusting slide rail (25) which is slidably connected to the second scraper (23); the adjusting slide rail (25) is arranged horizontally in a direction perpendicular to the moving direction of the kraft paper (400); the first scraper (22) is rotatably connected to an adjusting screw rod (26); the adjusting screw rod (26) is arranged in the sliding direction of the second scraper (23); adjusting bearings (27) which are coaxially rotatably connected to the adjusting screw rod (26) are installed at both ends of the adjusting slide rail (25); the adjusting slide rail (25) is threadedly connected to the adjusting screw rod (26).

7. The laminating machine for producing paper-plastic composite bags according to claim 2, characterized in that: The dust-binding component (3) comprises an adhesive roller (31) rotatably mounted on the cleaning bracket (1); the adhesive roller (31) is located on a side of the support roller (21) facing the squeezing roller group (100); the adhesive roller (31) is located above the kraft paper (400); and a coaxial sleeve on the adhesive roller (31) is provided with a silica gel dust-removing rubber sleeve (32) that contacts the surface of the kraft paper (400) and is used to adhere to debris on the surface of the kraft paper (400).

8. The laminating machine for producing paper-plastic composite bags according to claim 7, characterized in that: A guide roller (33) is provided on the side of the bonding roller (31) facing away from the support roller (21); the support roller (21), the bonding roller (31) and the guide roller (33) are arranged in a "V" shape; the guide roller (33) is located obliquely above the squeezing roller group (100).

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