PE sheet coating device

Abstract

The utility model discloses a PE (Poly Ethylene) sheet coating device, which relates to the technical field of PE sheet production, and comprises a bottom plate, a winding roller, an unwinding roller, two guide rollers and a drying oven are fixedly arranged at the top of the bottom plate, a glue box is fixedly arranged at the top of the bottom plate, a glue coating roller is rotatably connected onto the glue box, the bottom of the glue coating roller is immersed in glue in the glue box, and the bottom of the glue coating roller is fixedly connected with the drying oven. A plurality of first scraping plates are annularly and rotationally connected through a first rotating rod and a first rotating cylinder at equal angles, and the scraping plates can be close to the peripheral surface of the glue spreading roller. During use, a glue layer attached to the surface of the glue spreader can be scraped and trimmed through the arranged first scrapers, so that the thickness of the glue layer attached to the surface of the glue spreader is more uniform, and the uniformity of the glue spread on the surface of a PE sheet by the glue spreader can be improved; and meanwhile, the phenomenon that the PE sheet is deformed and damaged due to the fact that the scraper makes direct contact with the PE sheet can be avoided, and the coating machining effect and reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PE sheet production, and particularly relates to a PE sheet coating device. Background Technique

[0002] PE sheet is a thermoplastic resin with high crystallinity and non-polarity, and has excellent properties of resisting most chemicals used in life and industry. This polymer does not absorb moisture and has good water vapor barrier properties, and can be used for packaging purposes. At the same time, it has good electrical properties, especially high insulation dielectric strength, making it very suitable for wire and cable, etc.

[0003] During the production and processing of PE sheets, glue needs to be evenly coated on the surface of the PE sheets, and then a protective film is made through drying, winding, curing and other processes to protect the surface of the PE sheets and improve the service life of the PE sheets.

[0004] The Chinese utility model patent with the patent application number CN202022620597.3 records a PE film coating device. Through the arranged scraper, when the glue surface of the PE film passes through the scraper and the U-shaped plate, the excess glue will be scraped off, and at the same time, the glue is evenly distributed on the PE film. This mechanism can effectively improve the uniformity of PE film coating and avoid the uneven distribution of glue from affecting the coating quality of the PE film. However, in the above device, the scraper is directly used to scrape and spread the glue on the glue surface of the PE film, and the scraper will generate a large shear pressure on the PE film, which is likely to cause the PE film to elongate, deform or even break, reducing the qualification rate and reliability of the PE film coating process. Content of the Utility Model

[0005] The purpose of this application is to provide a PE sheet coating device to solve the problem that the scraper directly scrapes and spreads the glue on the glue surface of the PE film in the above background technique, and the scraper will generate a large shear pressure on the PE film, which is likely to cause the PE film to elongate, deform or even break, reducing the qualification rate and reliability of the PE film coating process.

[0006] To achieve the above purpose, this application provides the following technical solution: A PE sheet coating device includes a bottom plate, on the top of the bottom plate, a winding roller, an unwinding roller, two guide rollers and an oven are fixedly installed. A glue tank is fixedly installed on the top of the bottom plate. A coating roller is rotatably connected to the glue tank. The bottom of the coating roller is immersed in the glue in the glue tank. It also includes a number of first scrapers rotatably connected in an annular shape at equal angles through a first rotating rod and a first rotating cylinder. The first scrapers can be close to the outer peripheral surface of the coating roller.

[0007] Preferably, it further includes a glue removing assembly provided at the top of the glue tank. The glue removing assembly is used to remove the glue remaining on the surface of the first squeegee. The advantage of this setting is that it can timely remove the glue remaining and adhering on the surface of the first squeegee, so as to prevent the trimming and scraping effect of the first squeegee on the glue on the surface of the coating roller from being reduced due to the glue adhering to the scraping surface of the first squeegee, and thus can effectively improve the uniformity of the glue coated on the surface of the PE sheet by the coating roller.

[0008] Preferably, the glue removing assembly includes a heating box fixedly connected to the top of the glue tank. An opening is provided on the side wall of the heating box close to the first squeegee. A hot air pipe is communicated with the front of the heating box. The rear end of the hot air pipe penetrates through the front side wall of the heating box and is fixedly connected to its rear inner wall. A plurality of air jet pipes are equidistantly communicated on the outer peripheral surface of the hot air pipe, and the plurality of air jet pipes are aligned with the opening. The advantage of this setting is that the hot air is blown onto the scraping surface of the first squeegee through the air jet pipes, so that the glue adhering to the scraping surface of the first squeegee can be quickly melted and flow to the bottom of the heating box, thus quickly completing the removal of the glue adhering to the scraping surface of the first squeegee and ensuring the effect and reliability of the coating process.

[0009] Preferably, the glue removing assembly further includes a second squeegee rotatably connected between the front and rear inner walls of the heating box through a second rotating rod and a second rotating cylinder. The rear end of the second rotating rod penetrates through the rear side wall of the heating box and is fixedly connected to the output shaft of the first motor. The advantage of this setting is that it can scrape the glue remaining on the scraping surfaces of several first squeegees, so as to cooperate with the air jet pipes to strengthen the removal effect of the glue remaining on the scraping surface of the first squeegee, and more reliably ensure the effect and reliability of the coating process of the device.

[0010] Preferably, the glue removing assembly further includes a fixing plate fixedly connected to the outer peripheral surface of the second rotating cylinder. A sliding groove is provided on the side surface of the fixing plate away from the second rotating cylinder. The second squeegee is slidably connected inside the sliding groove. A plurality of elastic members are fixedly connected between the side surface of the second squeegee and the inner side wall of the sliding groove. The advantage of this setting is that when the second squeegee rotates clockwise and the first squeegee rotates counterclockwise, the second squeegee can always tightly abut against the scraping surface of the first squeegee under the elastic force of the elastic members, so as to more thoroughly scrape the glue remaining on the scraping surface of the first squeegee.

[0011] Preferably, two groups of hydraulic cylinders are symmetrically and fixedly connected to the top of the bottom plate. The bottom of the glue tank is fixedly connected to the output ends of the two groups of hydraulic cylinders. The advantage of this setting is that it can adjust the height of the coating roller, so as to reliably perform coating processing on the surfaces of PE plates with different thicknesses, and improve the practicability of the device.

[0012] In summary, the technical effects and advantages of the present utility model:

[0013] 1. In the present utility model, a plurality of first scraping plates are provided to scrape and trim the glue layer attached to the surface of the glue coating roller, so that the thickness of the glue layer attached to the surface of the glue coating roller is more uniform. In this way, the uniformity of the glue coating roller in coating the glue on the surface of the PE sheet can be improved. At the same time, it can avoid the direct contact between the scraper and the PE sheet, resulting in deformation and damage of the PE sheet, and improve the effect and reliability of the coating process.

[0014] 2. In the present utility model, the glue removing assembly is provided to quickly and effectively remove the glue remaining on the scraping surfaces of the plurality of first scraping plates, so as to ensure that the first scraping plates can stably and reliably scrape and trim the glue layer attached to the outer peripheral surface of the glue coating roller, ensure the uniformity of the glue layer attached to the outer peripheral surface of the glue coating roller, and further improve the effect and reliability of the coating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is the first structural schematic diagram of a PE sheet coating device in an embodiment of the present application;

[0017] Figure 2 It is the second structural schematic diagram of a PE sheet coating device in an embodiment of the present application;

[0018] Figure 3 It is the first sectional structural schematic diagram of the glue tank in an embodiment of the present application;

[0019] Figure 4 It is the second sectional structural schematic diagram of the glue tank in an embodiment of the present application;

[0020] Figure 5 It is in an embodiment of the present application Figure 3 The enlarged schematic diagram of part A;

[0021] Figure 6 It is in an embodiment of the present application Figure 4 The enlarged schematic diagram of part B.

[0022] In the figure: 1, bottom plate; 2, winding roller; 3, unwinding roller; 4, guide roller; 5, oven; 6, glue tank; 61, glue coating roller; 7, first scraping plate; 8, glue removing assembly; 81, heating box; 82, hot air pipe; 83, air spraying pipe; 84, second scraping plate; 85, fixing plate; 86, elastic member; 9, hydraulic cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] Please refer to Figures 1-6 A PE sheet coating device as shown, which includes a bottom plate 1. A winding roller 2, an unwinding roller 3, two guide rollers 4 and an oven 5 are fixedly installed on the top of the bottom plate 1. A glue tank 6 is fixedly installed on the top of the bottom plate 1. A coating roller 61 is rotatably connected to the glue tank 6. The bottom of the coating roller 61 is immersed in the glue in the glue tank 6. It also includes a plurality of first scraping plates 7 rotatably connected in an annular shape at equal angles through a first rotating rod and a first rotating cylinder. The first scraping plates 7 can be close to the outer peripheral surface of the coating roller 61.

[0026] The PE sheet is wound around the outer peripheral surface of the unwinding roller 3. Then, the free ends of the PE sheet respectively bypass the bottom of the right guide roller 4, the top of the coating roller 61, the bottom of the left guide roller 4 and are wound around the outer peripheral surface of the winding roller 2. Then, the winding roller 2 rotates to drive the PE sheet to move. At the same time, the coating roller 61 rotates clockwise for coating processing.

[0027] Refer to Figure 1 and Figure 2 , and it also includes a glue removing assembly 8 arranged on the top of the glue tank 6. The glue removing assembly 8 is used to remove the residual glue on the surface of the first scraping plates 7.

[0028] Specifically, it can timely remove the residual glue attached to the surface of the first scraping plates 7, so as to prevent the trimming and scraping effect of the first scraping plates 7 on the glue on the surface of the coating roller 61 from being reduced due to the glue adhering to the scraping surface of the first scraping plates 7. In this way, the uniformity of the glue coated on the surface of the PE sheet by the coating roller 61 can be effectively improved.

[0029] Refer to Figures 3-6 , the glue removing assembly 8 includes a heating box 81 fixedly connected to the top of the glue tank 6. An opening is formed on the side wall of the heating box 81 close to the first scraping plates 7. A hot air pipe 82 is communicated with the front of the heating box 81. The rear end of the hot air pipe 82 penetrates through the front side wall of the heating box 81 and is fixedly connected to its rear inner wall. A plurality of air injection pipes 83 are equidistantly communicated on the outer peripheral surface of the hot air pipe 82, and the plurality of air injection pipes 83 are aligned with the opening.

[0030] Specifically, hot air is blown onto the glue scraping surface of the first scraper 7 through the air jet pipe 83, so that the glue adhering to the glue scraping surface of the first scraper 7 can be quickly melted and flow to the bottom of the heating box 81, thus quickly completing the removal of the glue adhering to the glue scraping surface of the first scraper 7, ensuring the effect and reliability of the coating process.

[0031] Reference Figures 3-6 , the glue removal assembly 8 further includes a second scraper 84 rotatably connected between the front and rear inner walls of the heating box 81 through a second rotating rod and a second rotating cylinder, and the rear end of the second rotating rod penetrates through the rear side wall of the heating box 81 and is fixedly connected to the output shaft of the first motor.

[0032] Specifically, it can scrape the residual glue on the glue scraping surfaces of several first scrapers 7, so as to cooperate with the air jet pipe 83 to strengthen the removal effect of the residual glue on the glue scraping surface of the first scraper 7, and more reliably ensure the effect and reliability of the coating process of the device.

[0033] Reference Figures 3-6 , the glue removal assembly 8 further includes a fixing plate 85 fixedly connected to the outer peripheral surface of the second rotating cylinder. A chute is provided on the side of the fixing plate 85 away from the second rotating cylinder, and the second scraper 84 is slidably connected inside the chute. A plurality of elastic members 86 are fixedly connected between the side surface of the second scraper 84 and the inner side wall of the chute.

[0034] Specifically, when the second scraper 84 rotates clockwise and the first scraper 7 rotates counterclockwise, the second scraper 84 can always tightly abut against the glue scraping surface of the first scraper 7 under the elastic force of the elastic members 86, so as to more thoroughly scrape the residual glue on the glue scraping surface of the first scraper 7.

[0035] Reference Figure 1 and Figure 2 , two groups of hydraulic cylinders 9 are symmetrically and fixedly connected to the top of the bottom plate 1, and the bottom of the glue tank 6 is fixedly connected to the output ends of the two groups of hydraulic cylinders 9.

[0036] Specifically, it can adjust the height of the glue applicator roller 61, so as to reliably coat the surfaces of PE plates with different thicknesses, improving the practicability of the device.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A PE sheet coating device, comprising a bottom plate (1), on the top of the bottom plate (1), a winding roller (2), an unwinding roller (3), two guide rollers (4) and an oven (5) are fixedly installed, and it is characterized in that: A glue tank (6) is fixedly installed at the top of the bottom plate (1). A glue coating roller (61) is rotatably connected to the glue tank (6). The bottom of the glue coating roller (61) is immersed in the glue in the glue tank (6). It further includes a plurality of first scraping plates (7) which are annularly rotatably connected at equal angles through a first rotating rod and a first rotating cylinder. The first scraping plates (7) can be close to the outer peripheral surface of the glue coating roller (61).

2. The PE sheet coating device according to claim 1, characterized in that: It further includes a glue removing assembly (8) arranged at the top of the glue tank (6). The glue removing assembly (8) is used for removing the glue remaining on the surface of the first scraping plates (7).

3. The PE sheet coating device according to claim 2, wherein: The glue removing assembly (8) includes a heating box (81) fixedly connected to the top of the glue tank (6). An opening is formed in the side wall of the heating box (81) close to the first scraping plates (7). A hot air pipe (82) is communicated with the front of the heating box (81). The rear end of the hot air pipe (82) penetrates through the front side wall of the heating box (81) and is fixedly connected to its inner wall at the rear side. A plurality of air injection pipes (83) are equidistantly communicated with the outer peripheral surface of the hot air pipe (82). The plurality of air injection pipes (83) are aligned with the opening.

4. The PE sheet coating device according to claim 3, characterized in that: The glue removing assembly (8) further includes a second scraping plate (84) rotatably connected between the front and rear inner walls of the heating box (81) through a second rotating rod and a second rotating cylinder. The rear end of the second rotating rod penetrates through the rear side wall of the heating box (81) and is fixedly connected to the output shaft of the first motor.

5. The PE sheet coating device according to claim 4, characterized in that: The glue removing assembly (8) further includes a fixing plate (85) fixedly connected to the outer peripheral surface of the second rotating cylinder. A sliding groove is formed in the side surface of the fixing plate (85) away from the second rotating cylinder. The second scraping plate (84) is slidably connected inside the sliding groove. A plurality of elastic members (86) are fixedly connected between the side surface of the second scraping plate (84) and the inner side wall of the sliding groove.

6. The PE sheet coating device according to claim 1, characterized in that: Two groups of hydraulic cylinders (9) are symmetrically and fixedly connected to the top of the bottom plate (1). The bottom of the glue tank (6) is fixedly connected to the output ends of the two groups of hydraulic cylinders (9).

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