Gluing device for aluminum plastic film

Abstract

The utility model discloses an aluminum-plastic film gluing device which comprises a glue tank, a glue spraying device and a glue spraying device, wherein the top of the glue tank is open; the dustproof cover detachably covers the top of the glue tank, the dustproof cover and the glue tank define a feeding port and a discharging port which are opposite to each other, and the length direction of the feeding port and the length direction of the discharging port are parallel and horizontal; and the gluing assembly is arranged between the glue groove and the dust cover and comprises a guide roller, a gluing roller and a glue scraping roller which are axially parallel and rotate around the axis of the glue scraping roller, the glue scraping roller is located between the gluing roller and the discharging port, and the guide roller is used for guiding the conveying direction of the aluminum foil so that the bottom face of the conveying track of the aluminum foil can be attached to the upper portion of the gluing roller and the upper portion of the glue scraping roller. According to the gluing device for the aluminum-plastic film, the dust cover covers the top of the glue groove, the possibility that dust enters the glue groove is reduced, the quality of glue liquid in the glue groove is guaranteed, the axis line position of the gluing roller is fixed, stable rotation is guaranteed, glue is smeared on aluminum foil, redundant glue on the surface of the aluminum foil is scraped off through the glue scraping roller, and therefore a glue layer with the uniform thickness is formed; and glue coating is improved.

Description

Technical Field

[0001] This utility model relates to the field of aluminum-plastic film production technology, and in particular to an adhesive coating device for aluminum-plastic film. Background Technology

[0002] Aluminum-plastic film is a type of film made by combining aluminum foil and plastic film with adhesives and other composite materials through a specific process. It has excellent properties such as barrier properties, moisture resistance, and weather resistance, and is therefore widely used in many fields such as construction, packaging, and electronics.

[0003] In the production process of aluminum-plastic film, an adhesive is applied to a layer of aluminum foil before it is bonded to a plastic film. To ensure a uniform coating amount, existing technologies, such as the Chinese utility model patent with publication number CN222174617U, disclose an adhesive coating device. By designing the adhesive roller to float on the adhesive liquid, the buoyancy supports the adhesive roller and roller seat, ensuring the contact area between the adhesive roller and the adhesive liquid, thereby ensuring a consistent coating amount and improving the coating quality.

[0004] However, in the above-mentioned coating device, the top of the glue tank is open, and dust can easily enter the glue tank, affecting the quality of the glue liquid and thus the quality of the glue layer formation on the film material surface. Moreover, since the coating roller floats on the glue liquid during the coating process, the up-and-down movement of the coating roller affects the flow of the glue liquid on the surface of the coating roller, resulting in uneven distribution of the glue liquid on the surface of the coating roller, which in turn affects the uniformity of the glue layer distribution on the film material, leaving room for further improvement in the coating quality.

[0005] Therefore, it is necessary to improve the existing adhesive application equipment. Utility Model Content

[0006] The purpose of this invention is to overcome the defects in the existing technology and provide an adhesive coating device for aluminum-plastic film that improves the coating quality.

[0007] To achieve the above-mentioned technical effects, the technical solution of this utility model is: an adhesive coating device for aluminum-plastic film, comprising:

[0008] A glue tank, the top of which is open;

[0009] A dust cover is detachably installed on the top of the glue tank and surrounds the glue tank to form a feed inlet and a discharge outlet facing each other. The feed inlet and the discharge outlet are parallel and horizontal in their length directions.

[0010] An adhesive coating assembly is disposed between the adhesive tank and the dust cover. The adhesive coating assembly includes a guide roller, an adhesive coating roller, and a scraper roller, all of which are axially parallel and rotate around their own centerlines. The axial directions of the guide roller, the adhesive coating roller, and the scraper roller are all parallel to the length direction of the feed inlet. The scraper roller is located between the adhesive coating roller and the discharge outlet. The guide roller is used to guide the conveying direction of the aluminum foil so that the bottom surface of the aluminum foil conveying trajectory is in contact with the upper part of the adhesive coating roller and the upper part of the scraper roller.

[0011] Preferably, in order to facilitate the scraping off of some of the adhesive material on the surface of the aluminum foil, the outer circumferential edge of the scraping roller is rough.

[0012] Preferably, in order to ensure the uniformity of adhesive distribution on the aluminum foil surface after application, the outer circumferential edge of the scraper roller is provided with receiving grooves closely arranged along the axial direction of the scraper roller. The extension trajectory of the receiving groove is arc-shaped and the center of the extension trajectory is located on the axis of the scraper roller. The two side walls of the receiving groove are arranged adjacent to each other.

[0013] Preferably, in order to further ensure the uniformity of adhesive distribution on the aluminum foil surface after coating, the extension trajectory of the receiving groove is semi-circular, and the openings of two adjacent receiving grooves face opposite directions.

[0014] Preferably, in order to reduce the wear of the scraper roller on the aluminum foil, the inner wall of the receiving groove is connected to the outer circumferential wall of the scraper roller by a circular arc transition.

[0015] Preferably, to facilitate maintenance of the scraper roller and the coating roller, both the scraper roller and the coating roller are detachably disposed between the glue tank and the dust cover.

[0016] Preferably, in order to facilitate the disassembly of the scraper roller and the coating roller while ensuring the stability of their positions after installation between the dust cover and the glue tank, two positioning components are provided on the inner walls at both ends of the glue tank and the inner walls at both ends of the dust cover, corresponding to the ends of the scraper roller shaft and the coating roller shaft. The positioning components on the inner wall of the glue tank and the positioning components on the inner wall of the dust cover cooperate with each other to fix the radial position of the coating roller and the scraper roller.

[0017] Preferably, in order to achieve radial positioning of the scraper roller and the coating roller, the positioning component includes an arcuate groove extending along the length direction parallel to the feed inlet.

[0018] Preferably, in order to reduce the frictional force experienced by the scraping roller and the coating roller when they rotate, a positioning roller is provided on the inner wall of the arc-shaped groove. The axial direction of the positioning roller is consistent with the length direction of the arc-shaped groove. The positioning roller rotates around its own axis on the arc-shaped groove, and the roller surface of the positioning roller protrudes from the curved surface of the inner wall of the arc-shaped groove.

[0019] Preferably, in order to facilitate the replenishment of adhesive into the glue tank, the glue tank is fixedly connected to a glue injection tube, and the glue injection tube is detachably connected to a sealing plug.

[0020] In summary, compared with the prior art, the adhesive coating device for aluminum-plastic film of this utility model reduces the possibility of dust entering the adhesive tank by covering the top of the adhesive tank with a dust cover, thus ensuring the quality of the adhesive liquid in the adhesive tank. The centerline position of the adhesive coating roller is fixed to ensure stable rotation and apply the adhesive to the aluminum foil. The excess adhesive on the surface of the aluminum foil is then scraped off by the adhesive scraper roller, thereby forming an adhesive layer with uniform thickness and improving the coating quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 yes Figure 1 An explosion diagram;

[0023] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0024] Figure 4 yes Figure 3 The front view;

[0025] Figure 5 This is a schematic diagram of the structure of the dust cover of this utility model;

[0026] Figure 6 This is a schematic diagram of the connection structure between the glue tank and the glue application assembly of this utility model;

[0027] Figure 7 yes Figure 6 An explosion diagram;

[0028] Figure 8 yes Figure 7 Enlarged view of part A;

[0029] In the diagram: 1. Glue tank; 11. Glue injection tube; 12. Sealing plug; 13. Lower flange; 14. Positioning sleeve; 15. Liquid level sensor; 2. Dust cover; 21. Upper flange; 22. Positioning column; 3. Guide roller; 31. Roller seat; 4. Glue application roller; 5. Glue scraper roller; 51. Receiving groove; 6. Positioning assembly; 61. Arc groove; 62. Positioning roller; 63. Support rod; 64. Flat plate; 65. Vertical plate; 7. Aluminum foil; 8. Bolt; 9. Nut. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0031] like Figures 1-8 As shown, the adhesive coating device for aluminum-plastic film of this utility model includes:

[0032] Glue tank 1, with an open top;

[0033] Dust cover 2, the dust cover 2 is detachably installed on the top of the glue tank 1 and surrounds the glue tank 1 to form a feed inlet and a discharge outlet facing each other. The feed inlet and the discharge outlet are parallel and horizontal in the length direction.

[0034] The glue coating assembly is located between the glue tank 1 and the dust cover 2. The glue coating assembly includes a guide roller 3, a glue coating roller 4, and a scraper roller 5, which are axially parallel and rotate around their own axis. The axial directions of the guide roller 3, the glue coating roller 4, and the scraper roller 5 are all parallel to the length direction of the feed inlet. The scraper roller 5 is located between the glue coating roller 4 and the discharge outlet. The guide roller 3 is used to guide the transmission direction of the aluminum foil 7 so that the bottom surface of the transmission trajectory of the aluminum foil 7 is in contact with the upper part of the glue coating roller 4 and the upper part of the scraper roller 5.

[0035] In this device, the dust cover 2 is detachably installed on the top of the glue tank 1, thereby reducing the chance of dust and impurities entering the glue tank 1 and ensuring the quality of the glue liquid in the glue tank 1. Furthermore, the dust cover 2 and the glue tank 1 enclose the inlet and outlet, making it convenient for the aluminum foil 7 to enter the space between the glue tank 1 and the dust cover 2 through the inlet. Then, under the guidance of the guide roller 3, it contacts the top of the coating roller 4. While the coating roller 4 rotates around its own axis, it picks up the glue liquid in the glue tank 1 and applies it to the bottom surface of the aluminum foil 7, so that a relatively thick glue layer is formed on the bottom surface of the aluminum foil 7. Then, through the traction of other guide rollers 3, the glue layer on the bottom surface of the aluminum foil 7 comes into contact with the scraping roller 5. The scraping roller 5 scrapes off part of the glue material in the glue layer on the bottom surface of the aluminum foil 7, causing the glue material to fall back into the glue tank 1. At the same time, the thickness of the glue layer on the bottom surface of the aluminum foil 7 is reduced, and after forming a glue layer with a reduced thickness, it is discharged through the outlet.

[0036] In this invention, the centerline position of the coating roller 4 is fixed, which avoids the increase of adhesive flow on its surface after the coating roller 4 moves, thus affecting the coating effect and improving the coating quality.

[0037] In this utility model, the outer edge of the top of the glue tank 1 is provided with a downward flange 13, which is a rectangular frame structure. The middle of both ends of the downward flange 13 is provided with a downwardly extending positioning sleeve 14. The bottom of the dust cover 2 is provided with an upward flange 21 at both ends. The two upward flanges 21 are U-shaped and face each other. The bottom of the upward flange 21 is provided with a positioning post 22 extending in the vertical direction. The positioning post 22 is inserted and matched with the positioning sleeve 14. Notches are provided on both sides of the bottom of the dust cover 2.

[0038] With the above structure, the positioning pin 22 and the positioning sleeve 14 can be inserted and matched to achieve precise docking between the dust cover 2 and the glue tank 1. After the two are docked, the inner wall of the notch at the bottom of both sides of the dust cover 2 and the lower flange 13 form the inlet and outlet for the aluminum foil 7 to be input and output.

[0039] To strengthen the connection between the dust cover 2 and the glue tank 1 and prevent the dust cover 2 from becoming loose, the four corners of the lower flange 13 and the corners of the two upper flanges 21 are fixedly connected by four pairs of threaded bolts 8 and nuts 9. This facilitates the disassembly and connection of the glue tank 1 and the dust cover 2, while ensuring the connection strength after they are connected.

[0040] To facilitate the periodic replenishment of adhesive into the glue tank 1, the glue tank 1 is fixedly connected to a glue injection tube 11. The glue injection tube 11 is detachably connected to a sealing plug 12. Specifically, one end of the glue injection tube 11 is fixedly connected to the top of the glue tank 1, and the other end is threadedly connected to the sealing plug 12. By opening the sealing plug 12, adhesive can be replenished into the glue tank 1 through the glue injection tube 11. The sealing plug 12 is used to seal the top of the glue injection tube 11, reducing the possibility of dust entering the glue tank 1.

[0041] To facilitate monitoring of the adhesive level in the adhesive tank 1, a downward-facing liquid level sensor 15 is fixed to the top of the inner wall of the adhesive tank 1.

[0042] The guide roller 3, coating roller 4, and scraper roller 5 are arranged close together to ensure the compactness of the device. Two guide rollers 3 are provided on the feeding side of the coating roller 4, and one guide roller 3 is provided between the coating roller 4 and the scraper roller 5 on the discharge side. The axes of the guide roller 3, coating roller 4, and scraper roller 5 are on the same horizontal plane. This ensures sufficient contact area between the aluminum foil 7 and the coating roller 4 during transport, allowing the coating roller 4 to apply the dipped adhesive to the bottom surface of the aluminum foil 7, forming a thick adhesive layer. Excess adhesive is then scraped off by the scraper roller 5. Roller seats 31 are provided at both ends of the guide roller 3, fixed to the inner walls of both ends of the adhesive trough 1. The roller shaft of the guide roller 3 rotates on the roller seats 31, ensuring stable rotation of the guide roller 3 around its own axis.

[0043] A further improvement is that the outer circumferential edge of the scraper roller 5 is roughened. Compared to a smooth outer circumferential edge design, the roughened surface is more effective at scraping off the adhesive from the bottom surface of the aluminum foil 7.

[0044] A further improvement is that the outer circumferential edge of the scraper roller 5 is provided with receiving grooves 51 arranged closely along the axial direction of the scraper roller 5. The extension trajectory of the receiving grooves 51 is arc-shaped and the center of the extension trajectory is located on the axis of the scraper roller 5. The two side walls of the receiving grooves 51 are arranged close together.

[0045] By adopting the above design, the number and distribution density of the receiving grooves 51 are increased by using closely distributed receiving grooves 51 and the side walls of the receiving grooves 51 being closely distributed. In addition, during the rotation of the scraper roller 5, the groove opening direction of the receiving grooves 51 changes. When the groove opening of the receiving groove 51 is upward, the roller surface of the scraper roller 5 squeezes the adhesive on the bottom surface of the aluminum foil 7, so that after the adhesive flows, part of it enters the receiving groove 51 on the side. When the groove opening of the receiving groove 51 is downward, the contained adhesive can be poured downward into the adhesive trough 1. During the scraping process, the adhesive also flows in the axial direction of the scraper roller 5, so that less adhesive is evenly applied to the bottom surface of the aluminum foil 7, ensuring the thickness and uniformity of the adhesive layer, and improving the quality of the final aluminum-plastic film product.

[0046] A further improvement is that the extension trajectory of the receiving groove 51 is semi-circular, and the openings of two adjacent receiving grooves 51 face opposite directions. With this design, the length of the receiving groove 51 can be increased to accommodate more adhesive material, while also promoting the flow of adhesive material on the bottom surface of the aluminum foil 7 along the axis of the scraper roller 5 during scraping, ensuring uniform distribution of adhesive material.

[0047] A further improvement is that the inner wall of the receiving groove 51 is connected to the outer circumferential wall of the scraper roller 5 by a circular arc transition.

[0048] This design avoids sharp corners at the opening of the receiving groove 51, which could easily scratch the aluminum foil 7. In addition, it increases the capacity and receiving area of ​​the receiving groove 51, as well as the spacing between the openings of adjacent receiving grooves 51, making it easier to accommodate more adhesive and facilitate the flow of adhesive into and out of the receiving groove 51.

[0049] A further improvement is that both the scraper roller 5 and the coating roller 4 can be detachably installed between the glue tank 1 and the dust cover 2.

[0050] With this design, it is convenient to periodically remove the scraper roller 5 and the coating roller 4, clean the debris remaining on the surface of the scraper roller 5 and the coating roller 4, ensure the smoothness of the two, and extend their service life.

[0051] A further improvement is that the inner walls at both ends of the glue tank 1 and the inner walls at both ends of the dust cover 2 are provided with two positioning components 6 corresponding to the ends of the roller shafts of the scraper roller 5 and the coating roller 4. The positioning components 6 on the inner wall of the glue tank 1 and the positioning components 6 on the inner wall of the dust cover 2 cooperate with each other to fix the radial position of the coating roller 4 and the scraper roller 5.

[0052] Specifically, two positioning components 6 are provided on the top of the inner walls at both ends of the glue tank 1 to position the lower ends of the two ends of the glue coating roller 4 and the lower ends of the two ends of the scraper roller 5. Two positioning components 6 are provided on the bottom of the inner walls at both ends of the dust cover 2. When the dust cover 2 is fixedly connected to the glue tank 1 by bolts 8 and nuts 9, the positioning components 6 at both ends of the dust cover 2 can position the upper ends of the two ends of the glue coating roller 4 and the upper ends of the scraper roller 5 respectively. In this way, it is convenient to install and disassemble the glue coating roller 4 and the scraper roller 5, and the stability of the position of the glue coating roller 4 and the scraper roller 5 when they are installed between the glue tank 1 and the dust cover 2 is ensured.

[0053] A further improvement is that the positioning component 6 includes an arcuate groove 61 extending along the length direction parallel to the feed inlet; a positioning roller 62 is provided on the inner wall of the arcuate groove 61, the axial direction of the positioning roller 62 is consistent with the length direction of the arcuate groove 61, the positioning roller 62 rotates around its own axis on the arcuate groove 61, and the roller surface of the positioning roller 62 protrudes from the curved surface of the inner wall of the arcuate groove 61.

[0054] Specifically, the inner diameter of the inner wall of the arc-shaped groove 61 is larger than the outer diameter of the roller shaft of the scraper roller 5 and the roller shaft of the coating roller 4. A positioning roller 62 is provided on the inner wall of the arc-shaped groove 61 in the same direction as its own length. The positioning roller 62 rotates around its own axis and protrudes from the curved surface of the inner wall of the arc-shaped groove 61. The cross-section of the inner wall of the arc-shaped groove 61 is semi-circular. A flat plate 64 is connected to the side of the arc-shaped groove 61 facing away from the groove opening through a support rod 63. A vertical plate 65 is fixedly connected to the flat plate 64. In the positioning component 6 corresponding to the glue tank 1, the vertical plate 65 is fixedly connected to the inner wall of the glue tank 1. In the positioning component 6 corresponding to the dust cover 2, the vertical plate 65 is fixedly connected to the inner wall of the dust cover 2.

[0055] With the above structure, the positioning roller 62 of the arc groove 61 on the inner wall of the glue tank 1 can support and position the lower part of the roller shaft of the coating roller 4 and the roller shaft of the scraper roller 5. When the dust cover 2 is fixedly connected to the glue tank 1, the positioning roller 62 connected to the arc groove 61 corresponding to the dust cover 2 can press down on the upper part of the roller shaft of the coating roller 4 and the roller shaft of the scraper roller 5 and position them. The openings of the upper and lower arc grooves 61 overlap, and the two arc grooves 61 combine to form a cylindrical channel with the coaxial center line of the coating roller 4 or the scraper roller 5. Inside the cylindrical channel, the roller surface of the positioning roller 62 is positioned with the roller shaft of the coating roller 4 or the roller shaft of the scraper roller 5. On the basis of ensuring the stability of the center line position of the coating roller 4 and the scraper roller 5, the positioning roller 62 rotates around its own center line, and the friction force on the coating roller 4 and the scraper roller 5 during rotation is reduced by rolling friction, thereby facilitating the smooth application and scraping of glue.

[0056] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A coating device for aluminum-plastic film, characterized in that, The application relates to a glue tank and a glue coating assembly. The glue tank (1) is provided with a dust cover (2) which is detachably arranged on the top of the glue tank (1) and forms a feeding port and a discharging port opposite to each other together with the glue tank (1), the length direction of the feeding port and the discharging port is parallel and horizontal. The glue coating assembly is arranged between the glue tank (1) and the dust cover (2), and comprises a guide roller (3), a glue coating roller (4) and a glue scraping roller (5) which are axially parallel and rotate around their own axial lines, the guide roller (3), the glue coating roller (4) and the glue scraping roller (5) are axially parallel to the length direction of the feeding port, the glue scraping roller (5) is located between the glue coating roller (4) and the discharging port, and the guide roller (3) is used for guiding the transmission direction of the aluminum foil (7) so that the bottom surface of the transmission track of the aluminum foil (7) is attached to the upper part of the glue coating roller (4) and the upper part of the glue scraping roller (5). The circumferential outer edge of the glue scraping roller (5) is a rough surface.

2. The apparatus for coating the aluminum-plastic film according to claim 1, wherein: The circumferential outer edge of the glue scraping roller (5) is provided with containing grooves (51) which are closely arranged along the axial direction of the glue scraping roller (5), the extending track of the containing grooves (51) is an arc shape and the center of the extending track is located on the axial line of the glue scraping roller (5), and the two opposite side walls of the containing grooves (51) are closely arranged.

3. The apparatus for coating the aluminum-plastic film according to claim 2, wherein: The extending track of the containing grooves (51) is a semicircular shape, and the grooves of the two adjacent containing grooves (51) are oppositely directed.

4. The apparatus for coating the aluminum-plastic film according to claim 3, wherein: The inner wall of the containing grooves (51) is connected to the circumferential outer wall of the glue scraping roller (5) in an arc transition mode.

5. The apparatus for coating the aluminum-plastic film according to claim 3, wherein: The glue scraping roller (5) and the glue coating roller (4) are detachably arranged between the glue tank (1) and the dust cover (2).

6. The apparatus for coating the aluminum-plastic film according to claim 1, wherein: The inner walls of the two ends of the glue tank (1) and the inner walls of the two ends of the dust cover (2) are provided with two positioning assemblies (6) corresponding to the roller shaft ends of the glue scraping roller (5) and the glue coating roller (4), the positioning assembly (6) on the inner wall of the glue tank (1) and the positioning assembly (6) on the inner wall of the dust cover (2) are matched with each other to fix the radial positions of the glue coating roller (4) and the glue scraping roller (5).

7. The apparatus for coating the aluminum-plastic film according to claim 6, wherein: The positioning assembly (6) comprises an arc-shaped groove (61) extending along the length direction parallel to the feeding port.

8. The apparatus for coating the aluminum-plastic film according to claim 7, wherein: The inner wall of the arc-shaped groove (61) is provided with a positioning roller (62), the axial direction of the positioning roller (62) is consistent with the length direction of the arc-shaped groove (61), the positioning roller (62) rotates around its own axial line on the arc-shaped groove (61), and the roller surface of the positioning roller (62) protrudes from the curved surface of the inner wall of the arc-shaped groove (61).

9. The apparatus for coating the aluminum-plastic film according to claim 8, wherein: The glue tank (1) is fixedly connected with a glue injection pipe (11), and the glue injection pipe (11) is detachably connected with a sealing plug (12).

10. The apparatus for coating the aluminum-plastic film according to any one of claims 1-9, wherein: ​

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