A coating spraying device for aluminum-plastic film production

Abstract

The present invention belongs to the technical field of aluminum-plastic film, and discloses a coating spraying device for aluminum-plastic film production, including a mounting frame, wherein a leveling assembly and a dust removal assembly above the mounting frame are arranged inside the mounting frame, a limit assembly is arranged outside the dust removal assembly, a buffer assembly is connected to the top of the limit assembly, an adjustment assembly is connected to the upper end of the buffer assembly, and the upper end of the adjustment assembly is movably connected to the top of the mounting frame; the dust removal assembly includes a dust removal roller arranged above the dust removal assembly, and a plurality of dust removal scrapers evenly distributed are arranged on the outer surface of the dust removal roller. Due to the arrangement of the dust removal assembly, the present invention can ensure that the dust removal roller and the dust removal scraper on its surface will not follow the movement of the aluminum-plastic film in real time under the cooperation of the protection assembly, so that the dust removal scraper can scrape dust or foreign matter on the surface of the aluminum-plastic film, and at the same time ensure that the dust removal scraper can follow the movement of the aluminum-plastic film under unexpected conditions, so as to avoid the situation where the scraping force is too large and the aluminum-plastic film is damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum-plastic films, in particular to a coating spraying device for aluminum-plastic film production. Background Art

[0002] There are many indicators required for aluminum-plastic film, the most important of which is also different from ordinary composite films: extremely high barrier properties, good cold stamping formability, puncture resistance, electrolyte stability and electrical properties (including insulation). During the production process of aluminum-plastic film, a layer of glue needs to be coated on the surface of the aluminum foil, and then bonded to other hierarchical structures.

[0003] Aluminum-plastic film is usually stored in a roll. During coating processing, it needs to be removed from the winding roller and sent into the spraying system through a transmission mechanism. During the transmission process from the aluminum-plastic film roller to the spraying system, the aluminum-plastic film is usually in a horizontal state. It is inevitable that dust or foreign matter in the air will fall on the aluminum-plastic film. In addition, during the entire transmission process, the aluminum-plastic film is inevitably deflected due to external force or improper operation at the beginning of winding. The deflection after entering the spraying system through transmission will affect the spraying effect and may cause wrinkles in the aluminum-plastic film, thereby affecting the production quality of the aluminum-plastic film. Therefore, it is necessary to develop a spraying device to solve the problems existing in the above-mentioned technology. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a coating spraying device for aluminum-plastic film production, which has the advantage of ensuring the spraying effect.

[0005] Among them, in order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coating spraying device for aluminum-plastic film production, comprising a mounting frame, a leveling component and a dust removal component above the mounting frame are arranged inside the mounting frame, a limiting component is arranged outside the dust removal component, a buffer component is connected to the top of the limiting component, an adjustment component is connected to the upper end of the buffer component, and the upper end of the adjustment component is movably connected to the top of the mounting frame;

[0006] The dust removal assembly includes a dust removal roller arranged above the leveling assembly, a plurality of evenly distributed dust removal scrapers are arranged on the outer surface of the dust removal roller, an aluminum-plastic film is arranged between the dust removal scrapers and the leveling assembly, two left and right protection assemblies are fixedly sleeved inside the dust removal roller, and second limiting rods are fixedly sleeved inside the two protection assemblies, and both ends of the second limiting rods penetrate the protection assembly and the dust removal roller and are fixedly connected to the limiting assembly;

[0007] The protection assembly includes a first linkage ring fixedly sleeved inside the dust removal roller, a coaxial second linkage ring is arranged inside the first linkage ring, the second linkage ring is fixedly sleeved on the outer surface of the second limiting rod, and the inner diameter of the first linkage ring is greater than the outer diameter of the second linkage ring;

[0008] A plurality of evenly distributed first reeds and second reeds are arranged between the first linkage ring and the second linkage ring, the plurality of first reeds and second reeds correspond to each other, the plurality of first reeds and second reeds are alternately distributed and fit each other, the first reed is fixedly connected to the inside of the first linkage ring, and the second reed is fixedly connected to the outer surface of the second linkage ring;

[0009] A plurality of the dust removal scrapers correspond to the first reed and the second reed one by one, and after the first reed and the second reed recover their deformation, one of the dust removal scrapers is tightly fitted to the top of the aluminum-plastic film;

[0010] Preferably, the leveling assembly includes a leveling roller movably mounted inside the mounting frame and below the dust removal roller, a plurality of evenly distributed leveling strips are fixedly provided on the outer surface of the leveling roller, and the dust removal scraper and the leveling strips are respectively attached to the upper and lower sides of the aluminum-plastic film.

[0011] Preferably, the leveling strip is an arch with a symmetrical middle portion, the middle portion of the leveling strip is aligned with the center line of the aluminum-plastic film, and the length of the leveling strip is greater than the width of the aluminum-plastic film.

[0012] Preferably, the top of the leveling strip and the two ends of the aluminum-plastic film are not in the same horizontal plane.

[0013] Preferably, the limiting assembly includes limiting slide grooves opened on the left and right sides of the mounting frame, and a limiting slide is arranged inside the mounting frame. The two ends of the limiting slide are slidably engaged in the limiting slide grooves, and the lower end of the limiting slide is fixedly connected to the two ends of the second limiting rod, and the top of the limiting slide is connected to the lower end of the buffer assembly.

[0014] Preferably, the buffer assembly includes an adjustment linkage frame slidably engaged with the interior of the mounting frame, and both ends of the adjustment linkage frame are fixedly connected with a limiting slider slidably engaged with the interior of the limiting slide groove;

[0015] The bottom of the adjustment linkage frame is fixedly connected with two left and right buffer limit sleeves, the internal movable sleeve of the buffer limit sleeve is connected with a buffer limit rod, the lower end of the buffer limit rod passes through the buffer limit sleeve and is fixedly connected to the top of the limit slide; the buffer limit sleeve is provided with a buffer spring located at the top of the buffer limit rod, and the upper and lower ends of the buffer spring are respectively connected with the buffer limit sleeve and the buffer limit rod.

[0016] Preferably, the adjusting assembly includes an adjusting screw rod threadedly sleeved on the middle part of the adjusting linkage frame, the lower end of the adjusting screw rod passes through the adjusting linkage frame and is fixedly connected to an anti-slip block; the upper end of the adjusting screw rod passes through the adjusting linkage frame and is fixedly connected to a positioning rotating shaft, the positioning rotating shaft is movably sleeved on the upper end of the mounting frame, the upper end of the positioning rotating shaft passes through the mounting frame and is fixedly connected to an adjusting knob located at the top of the mounting frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Due to the arrangement of the dust removal assembly of the present invention, under the cooperation of the protection assembly, it can be ensured that the dust removal roller and the dust removal scraper on its surface will not follow the movement of the aluminum-plastic film in real time, so that the dust removal scraper can scrape off dust or foreign matter on the surface of the aluminum-plastic film, and at the same time ensure that the dust removal scraper can follow the movement of the aluminum-plastic film in an unexpected situation, thereby avoiding the situation where the scraping force is too strong and damages the aluminum-plastic film.

[0019] 2. Due to the setting of the leveling component of the present invention, the aluminum-plastic film can be clamped with the cooperation of the dust removal component, and the leveling bar and the dust removal scraper can be in real-time contact with the aluminum-plastic film. Furthermore, through the arc structure of the leveling bar, when it moves along the bottom of the aluminum-plastic film, the aluminum-plastic film can be stretched from the middle to both sides to reach a flat state.

[0020] 3. Due to the setting of the adjustment component of the present invention, the dust removal component can move up and down with the cooperation of the limit component and the buffer component, thereby changing the distance between the dust removal component and the leveling component, so that the two can clamp aluminum-plastic films of different thicknesses with appropriate force, effectively improving its scope of application.

[0021] 4. Due to the setting of the buffer spring of the present invention, under the restriction of the buffer limit sleeve and the buffer limit rod, through the elastic force of the buffer limit sleeve, when the dust removal assembly presses the aluminum-plastic film downward with the cooperation of the leveling assembly, once an unexpected situation occurs, it is ensured that the dust removal assembly can move up to avoid excessive clamping and causing the aluminum-plastic film to be torn off under the transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a front view of the present invention;

[0024] Figure 3 A sectional view of the side of the present invention;

[0025] Figure 4 It is a cross-sectional view of the front side of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the dust removal component of the present invention;

[0027] Figure 6 for Figure 5 A local enlarged schematic diagram of the middle A;

[0028] Figure 7 It is a structural schematic diagram of the leveling component of the present invention.

[0029] In the figure: 1. mounting frame; 2. leveling assembly; 21. leveling roller; 22. leveling strip; 23. first limiting rod; 3. dust removal assembly; 31. dust removal roller; 32. dust removal scraper; 33. protection assembly; 331. first linkage ring; 332. second linkage ring; 333. first spring; 334. second spring; 34. second limiting rod; 4. limiting assembly; 41. limiting slide; 42. limiting slide; 5. buffer assembly; 51. adjusting linkage frame; 52. buffer limiting sleeve; 53. buffer limiting rod; 54. buffer spring; 55. limiting slider; 6. adjusting assembly; 61. adjusting screw; 62. anti-slip block; 63. positioning rotating shaft; 64. adjusting knob. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 7 As shown, the present invention provides a coating spraying device for aluminum-plastic film production, comprising a mounting frame 1, a leveling component 2 and a dust removal component 3 above the mounting frame 1 are arranged inside, a limiting component 4 is arranged outside the dust removal component 3, a buffer component 5 is connected to the top of the limiting component 4, an upper end of the buffer component 5 is connected to an adjusting component 6, and the upper end of the adjusting component 6 is movably connected to the top of the mounting frame 1;

[0032] The dust removal component 3 includes a dust removal roller 31 arranged above the leveling component 2, and the outer surface of the dust removal roller 31 is provided with a plurality of evenly distributed dust removal scrapers 32, an aluminum-plastic film is arranged between the dust removal scrapers 32 and the leveling component 2, and the dust removal roller 31 is internally fixedly sleeved with two left and right protection components 33, and the two protection components 33 are internally fixedly sleeved with second limiting rods 34, and the two ends of the second limiting rods 34 penetrate the protection components 33 and the dust removal roller 31 and are fixedly connected to the limiting component 4; due to the arrangement of the dust removal component 3, with the cooperation of the protection component 33, it can be ensured that the dust removal roller 31 and the dust removal scrapers 32 on its surface will not follow the movement of the aluminum-plastic film in real time, so that the dust removal scrapers 32 can scrape off dust or foreign matter on the surface of the aluminum-plastic film, and at the same time ensure that the dust removal scrapers 32 can follow the movement of the aluminum-plastic film in an unexpected situation, so as to avoid the situation where the scraping force is too large and the aluminum-plastic film is damaged;

[0033] The protection assembly 33 includes a first linkage ring 331 fixedly sleeved inside the dust removal roller 31, a coaxial second linkage ring 332 is arranged inside the first linkage ring 331, the second linkage ring 332 is fixedly sleeved on the outer surface of the second limiting rod 34, and the inner diameter of the first linkage ring 331 is larger than the outer diameter of the second linkage ring 332;

[0034] A plurality of evenly distributed first reeds 333 and second reeds 334 are arranged between the first linkage ring 331 and the second linkage ring 332. The plurality of first reeds 333 and second reeds 334 correspond to each other one by one. The plurality of first reeds 333 and second reeds 334 are alternately distributed and fit each other. The first reeds 333 are fixedly connected to the inside of the first linkage ring 331, and the second reeds 334 are fixedly connected to the outer surface of the second linkage ring 332.

[0035] The plurality of dust removal scrapers 32 correspond to the first spring piece 333 and the second spring piece 334 one by one. After the first spring piece 333 and the second spring piece 334 recover their deformation, one of the dust removal scrapers 32 is tightly fitted with the top of the aluminum-plastic film. Due to the cooperation of the first spring piece 333 and the second spring piece 334, the first linkage ring 331 and the second linkage ring 332 can be kept stationary relative to each other under the action of the elastic force of the first spring piece 333 and the second spring piece 334, and then the dust removal roller 31 and the dust removal scrapers 32 on the surface thereof can be kept stationary under the restriction of the second limiting rod 34, thereby ensuring that the dust removal scrapers 32 can scrape dust off the surface of the continuously moving aluminum-plastic film; and the deformation of the first spring piece 333 and the second spring piece 334 can ensure that the first linkage ring 331 and the second linkage ring 332 can rotate relative to each other, thereby ensuring that the dust removal scrapers 32 can follow the movement of the aluminum-plastic film, thereby avoiding the situation where the scraping force is too large and the aluminum-plastic film is damaged.

[0036] like Figure 2As shown, the leveling assembly 2 includes a leveling roller 21 movably mounted inside the mounting frame 1 and below the dust removal roller 31, and a plurality of evenly distributed leveling strips 22 are fixedly disposed on the outer surface of the leveling roller 21, and the dust removal scraper 32 and the leveling strips 22 are respectively attached to the upper and lower sides of the aluminum-plastic film.

[0037] like Figure 7 As shown, the leveling strip 22 is an arch symmetrical in the middle, the middle of the leveling strip 22 is aligned with the center line of the aluminum-plastic film, and the length of the leveling strip 22 is greater than the width of the aluminum-plastic film; due to the setting of the leveling component 2, with the cooperation of the dust removal component 3, it is ensured that the aluminum-plastic film can be clamped, and it is ensured that the leveling strip 22 and the dust removal scraper 32 can be in real-time contact with the aluminum-plastic film, and then through the arc structure of the leveling strip 22, when it moves along the bottom of the aluminum-plastic film, the aluminum-plastic film can be stretched from the middle to both sides to make it reach a flat state.

[0038] like Figure 1 As shown, the top of the leveling strip 22 and the two ends of the aluminum-plastic film are not in the same horizontal plane; since the gap between the leveling component 2 and the dust removal component 3 for clamping the aluminum-plastic film is located above or below the two ends of the aluminum-plastic film, it can be ensured that the aluminum-plastic film after being clamped by the leveling component 2 and the dust removal component 3 has a certain tension relative to its two ends, thereby ensuring that the aluminum-plastic film can always maintain a tensioned state during the transmission process, thereby ensuring that the leveling strip 22 and the dust removal scraper 32 can achieve their respective functions.

[0039] like Figure 3 As shown, the limit assembly 4 includes a limit slide groove 41 opened on the left and right sides of the mounting frame 1, and a limit slide 42 is arranged inside the mounting frame 1. The two ends of the limit slide 42 are slidably engaged in the inside of the limit slide groove 41, and the lower end of the limit slide 42 is fixedly connected to the two ends of the second limit rod 34, and the top of the limit slide 42 is connected to the lower end of the buffer assembly 5.

[0040] like Figure 2 and Figure 4 As shown, the buffer assembly 5 includes an adjustment linkage frame 51 that is slidably engaged with the inside of the mounting frame 1, and both ends of the adjustment linkage frame 51 are fixedly connected with a limiting slider 55 that is slidably engaged with the inside of the limiting slide groove 41;

[0041] The bottom of the adjusting linkage frame 51 is fixedly connected with two left and right buffer limit sleeves 52, and the buffer limit sleeve 52 is movably sleeved with a buffer limit rod 53 inside, and the lower end of the buffer limit rod 53 passes through the buffer limit sleeve 52 and is fixedly connected to the top of the limit slide 42; the buffer limit sleeve 52 is provided with a buffer spring 54 located at the top of the buffer limit rod 53 inside, and the upper and lower ends of the buffer spring 54 are respectively connected to the buffer limit sleeve 52 and the buffer limit rod 53; due to the setting of the buffer spring 54, under the restriction of the buffer limit sleeve 52 and the buffer limit rod 53, through its elastic force, when the dust removal component 3 presses the aluminum-plastic film downward with the cooperation of the leveling component 2, once an unexpected situation occurs, it is ensured that the dust removal component 3 can move up to avoid the situation where the aluminum-plastic film is torn off under the transmission mechanism due to excessive clamping.

[0042] like Figure 3 and Figure 4 As shown, the adjusting assembly 6 includes an adjusting screw rod 61 threadedly sleeved on the middle part of the adjusting linkage frame 51, the lower end of the adjusting screw rod 61 penetrates the adjusting linkage frame 51 and is fixedly connected with an anti-slip block 62; the upper end of the adjusting screw rod 61 penetrates the adjusting linkage frame 51 and is fixedly connected with a positioning rotating shaft 63, the positioning rotating shaft 63 is movably sleeved on the upper end of the mounting frame 1, the upper end of the positioning rotating shaft 63 penetrates the mounting frame 1 and is fixedly connected with an adjusting knob 64 located at the top of the mounting frame 1; due to the setting of the adjusting assembly 6, the dust removal assembly 3 can be moved up and down with the cooperation of the limit assembly 4 and the buffer assembly 5, thereby changing the distance between the dust removal assembly 3 and the leveling assembly 2, so that the two can clamp aluminum-plastic films of different thicknesses with appropriate force, effectively improving its scope of application.

[0043] The working principle and use process of the present invention:

[0044] The aluminum-plastic film is passed through between the leveling component 2 and the dust removal component 3 and connected to the transmission component. With the continuous movement of the aluminum-plastic film, friction is generated between the upper and lower sides of the aluminum-plastic film and the dust removal scraper 32 and the leveling strip 22, and the dust removal roller 31 and the leveling roller 21 can be rotated with the cooperation of the second limit rod 34 and the like;

[0045] Due to the friction between the bottom of the aluminum-plastic film and the leveling strip 22, the leveling roller 21 can be driven to rotate, and then the leveling strip 22 on its surface continuously moves along the bottom surface of the aluminum-plastic film, and then due to the arc structure of the leveling strip 22, the aluminum-plastic film can be stretched from the middle to both sides to make it flat;

[0046] Due to the contact between the top of the aluminum-plastic film and the dust removal scraper 32, the dust removal roller 31 will not rotate with the aluminum-plastic film under the restriction of the protection component 33. At this time, due to the relative sliding between the aluminum-plastic film and the dust removal scraper 32, the dust removal scraper 32 can slide along the surface of the aluminum-plastic film, thereby scraping off dust and foreign matter attached to the top of the aluminum-plastic film during transmission;

[0047] Once there is a foreign object with large adhesion or other unexpected conditions occur, causing the dust scraper 32 to move with the aluminum-plastic film, the dust roller 31 rotates. Since the rotation of the dust roller 31 can drive the first springs 333 inside it to rotate through the first linkage ring 331, and since the second limiting rod 34 limits the second spring 334 through the second linkage ring 332, the first springs 333 and the second springs 334 are squeezed and deformed against each other, ensuring that the dust scraper 32 can smoothly move with the aluminum-plastic film to avoid damaging the aluminum-plastic film.

[0048] Since the first reeds 333 and the second reeds 334 correspond to the dust scraper 32 one by one, after the dust roller 31 recovers from the deformation of the first reed 333 and the second reed 334, the other adjacent dust scraper 32 adheres to the surface of the aluminum-plastic film when the dust roller 31 rotates, ensuring that there is always a dust scraper 32 adhered to the surface of the aluminum-plastic film, thereby ensuring that during the transmission of the aluminum-plastic film, there is always a dust scraper 32 to scrape away dust and foreign matter that falls from the top of the aluminum-plastic film;

[0049] Under the restriction of the anti-slip block 62 and the positioning rotating shaft 63, the adjusting knob 64 can be turned to drive the adjusting screw 61 to rotate, thereby ensuring that the buffer assembly 5 can stably move up and down under the restriction of the mounting frame 1 and the limiting slide groove 41, thereby driving the limiting slide 42 to move up and down smoothly, and the movement of the limiting slide 42 can drive the dust removal assembly 3 to move up and down, thereby adjusting the distance between the dust removal assembly 3 and the leveling assembly 2 to ensure that aluminum-plastic films of different thicknesses are clamped;

[0050] Under the elastic force of the buffer spring 54, when the dust removal assembly 3 presses the aluminum-plastic film downward with the cooperation of the leveling assembly 2, once an unexpected situation occurs, it is ensured that the dust removal assembly 3 can move upward to avoid excessive clamping that causes the aluminum-plastic film to be torn off under the transmission mechanism.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coating spraying device for aluminum-plastic film production, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with a leveling assembly (2) and a dust removal assembly (3) above it, a limit assembly (4) is provided on the outside of the dust removal assembly (3), the top of the limit assembly (4) is connected to a buffer assembly (5), the upper end of the buffer assembly (5) is connected to an adjustment assembly (6), and the upper end of the adjustment assembly (6) is movably connected to the top of the mounting frame (1); The dust removal component (3) comprises a dust removal roller (31) arranged above the leveling component (2); the outer surface of the dust removal roller (31) is provided with a plurality of evenly distributed dust removal scrapers (32); an aluminum-plastic film is provided between the dust removal scrapers (32) and the leveling component (2); the interior of the dust removal roller (31) is fixedly sleeved with two left and right protection components (33); the interiors of the two protection components (33) are fixedly sleeved with second limit rods (34); the two ends of the second limit rods (34) penetrate the protection components (33) and the dust removal roller (31) and are fixedly connected to the limit components (4); The protection component (33) comprises a first linkage ring (331) fixedly sleeved inside the dust removal roller (31); a coaxial second linkage ring (332) is arranged inside the first linkage ring (331); the second linkage ring (332) is fixedly sleeved on the outer surface of the second limiting rod (34); the inner diameter of the first linkage ring (331) is larger than the outer diameter of the second linkage ring (332); A plurality of evenly distributed first reeds (333) and second reeds (334) are arranged between the first linkage ring (331) and the second linkage ring (332); the plurality of first reeds (333) and second reeds (334) correspond to each other one by one; the plurality of first reeds (333) and second reeds (334) are alternately distributed and fit each other; the first reeds (333) are fixedly connected to the inside of the first linkage ring (331); and the second reeds (334) are fixedly connected to the outer surface of the second linkage ring (332); A plurality of the dust removal scrapers (32) correspond to the first reed (333) and the second reed (334) in a one-to-one manner; after the first reed (333) and the second reed (334) recover their deformation, one of the dust removal scrapers (32) is tightly fitted to the top of the aluminum-plastic film.

2. The coating spraying device for aluminum-plastic film production according to claim 1, characterized in that: The leveling assembly (2) comprises a leveling roller (21) movably mounted inside the mounting frame (1) and below the dust removal roller (31); a plurality of evenly distributed leveling strips (22) are fixedly disposed on the outer surface of the leveling roller (21); and the dust removal scraper (32) and the leveling strips (22) are respectively attached to the upper and lower sides of the aluminum-plastic film.

3. The coating spraying device for aluminum-plastic film production according to claim 2, characterized in that: The leveling strip (22) is an arch with a symmetrical middle portion, the middle portion of the leveling strip (22) is aligned with the center line of the aluminum-plastic film, and the length of the leveling strip (22) is greater than the width of the aluminum-plastic film.

4. The coating spraying device for aluminum-plastic film production according to claim 2, characterized in that: The top of the leveling strip (22) and the two ends of the aluminum-plastic film are not in the same horizontal plane.

5. The coating spraying device for aluminum-plastic film production according to claim 1, characterized in that: The limiting assembly (4) comprises limiting slide grooves (41) opened on the left and right sides of the interior of the mounting frame (1); a limiting slide bracket (42) is arranged inside the mounting frame (1); two ends of the limiting slide bracket (42) are slidably engaged in the interior of the limiting slide groove (41); the lower end of the limiting slide bracket (42) is fixedly connected to the two ends of the second limiting rod (34); and the top of the limiting slide bracket (42) is connected to the lower end of the buffer assembly (5).

6. A coating spraying device for aluminum-plastic film production according to claim 5, characterized in that: The buffer assembly (5) comprises an adjustment linkage frame (51) slidably engaged with the interior of the mounting frame (1), and both ends of the adjustment linkage frame (51) are fixedly connected with a limiting slider (55) slidably engaged with the interior of the limiting slide groove (41); The bottom of the adjustment linkage frame (51) is fixedly connected to two left and right buffer limit sleeves (52); the buffer limit sleeve (52) is movably sleeved with a buffer limit rod (53); the lower end of the buffer limit rod (53) passes through the buffer limit sleeve (52) and is fixedly connected to the top of the limit slide (42); the buffer limit sleeve (52) is provided with a buffer spring (54) located at the top of the buffer limit rod (53); the upper and lower ends of the buffer spring (54) are respectively connected to the buffer limit sleeve (52) and the buffer limit rod (53).

7. A coating spraying device for aluminum-plastic film production according to claim 6, characterized in that: The adjustment assembly (6) comprises an adjustment screw rod (61) threadedly sleeved on the middle part of the adjustment linkage frame (51); the lower end of the adjustment screw rod (61) passes through the adjustment linkage frame (51) and is fixedly connected to an anti-dropping block (62); the upper end of the adjustment screw rod (61) passes through the adjustment linkage frame (51) and is fixedly connected to a positioning rotation shaft (63); the positioning rotation shaft (63) is movably sleeved on the upper end of the mounting frame (1); the upper end of the positioning rotation shaft (63) passes through the mounting frame (1) and is fixedly connected to an adjustment knob (64) located at the top of the mounting frame (1).

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