Coating device for middle-barrier aluminized polyethylene film

Abstract

The utility model provides a coating device for a middle-barrier aluminized polyethylene film, and belongs to the technical field of coating devices. Comprising a base, two side plates are fixed to one end of the upper end face of the base, a liquid conveying pipe and a coating roller which are vertically parallel are rotationally installed between the top ends of the two side plates, and a plurality of nozzles facing the coating roller are fixed to the lower end face of the liquid conveying pipe; a liftable pretreatment box is arranged at the end, away from the side plate, of the upper end face of the base, stand columns fixed to the base are arranged at the two ends of the pretreatment box in a matched mode, lifting plates extending downwards into the pretreatment box are fixed to the top ends of the two stand columns, and a plurality of horizontal first guide rollers are rotationally installed between the two lifting plates. According to the utility model, not only can the center barrier aluminized polyethylene film be uniformly coated so as to ensure the coating effect, but also the center barrier aluminized polyethylene film can be pretreated before coating, so that the coating efficiency can be effectively improved, and the overall use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of coating devices, and particularly relates to a coating device for a middle-barrier aluminized polyethylene film. Background Art

[0002] The middle-barrier aluminized polyethylene film is a composite material with excellent barrier properties and is widely used in the packaging of foods, medicines, and other products. It consists of a polyethylene substrate and an extremely thin metal aluminum layer plated on its surface, providing good gas and light barrier properties. To improve the performance of this film, such as enhancing water resistance, corrosion resistance, or improving surface printing effects, coating treatment is usually required on its surface.

[0003] Currently, when existing film materials are coated, they are generally coated using existing coating machines. However, when the middle-barrier aluminized polyethylene film is coated, in order to ensure the adhesion of the coating, the aluminized polyethylene film needs to be pretreated before coating. However, the existing coating devices do not have the function of pretreating the middle-barrier aluminized polyethylene film, resulting in the need to pretreat the middle-barrier aluminized polyethylene film in advance, which affects the coating efficiency.

[0004] Therefore, the present application provides a coating device for a middle-barrier aluminized polyethylene film to solve the above technical problems. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a coating device for a middle-barrier aluminized polyethylene film to solve the problem that the existing coating device does not have the function of pretreating the middle-barrier aluminized polyethylene film, resulting in the need to pretreat the middle-barrier aluminized polyethylene film in advance, which affects the coating efficiency.

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A coating device for a middle-barrier aluminized polyethylene film, comprising a base. One end of the upper end surface of the base is fixed with two side plates. Between the tops of the two side plates, a liquid delivery pipe and a coating roller are rotatably installed in parallel up and down. A plurality of nozzles facing the coating roller are fixed on the lower end surface of the liquid delivery pipe;

[0008] A liftable pretreatment box is arranged at the end of the upper end surface of the base far from the side plates. The two ends of the pretreatment box are matched with columns fixed on the base. At the top of each of the two columns, a hanging plate extending downward into the pretreatment box is fixed. A plurality of horizontal first guiding rollers are rotatably installed between the two hanging plates. Moreover, a cleaning box is fixed on the upper end surface of the base, and the cleaning box is located at the position between the pretreatment box and the side plates.

[0009] Optionally, the inside of the infusion tube is hollow and communicates with the nozzle, and one end of the infusion tube extends outside the side plate.

[0010] Optionally, vertical scrapers are also installed at the tops of the two side plates, and the lower ends of the scrapers are horizontally flush with the upper surface of the coating roller.

[0011] Optionally, the bottom of the pretreatment box is vertically inserted into the base, and two vertical limiting plates are symmetrically fixed, and a slot for placing the bottom of the pretreatment box is provided in the base, and the two limiting plates are respectively in sliding contact with the inner sides of both sides of the slot in the base.

[0012] Optionally, a driving rod is rotatably installed at the bottom of the slot in the base, two opposite threaded sections are symmetrically formed on the driving rod, and a slider is respectively threaded through each of them. The two sliders are symmetrically distributed in the slot of the base and slide against the bottom surface of the slot in the base.

[0013] Optionally, support rods are hingedly installed at the tops of the two sliders, and the tops of the two support rods are respectively movably installed at both ends of the lower end surface of the pretreatment box.

[0014] Optionally, the cleaning box is filled with cleaning water, the opening position at the top of the cleaning box is lower than the opening at the top of the pretreatment box, and a horizontal second guiding roller is rotatably installed in the middle of the opening of the cleaning box.

[0015] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0016] In the above solution, thanks to the cooperation of the side plate, the coating roller, the infusion tube and the scraper, the coating roller and the infusion tube can be used to coat the passing medium barrier aluminized polyethylene film, and then the scraper is used to evenly scrape the coating flat to complete the coating, and the coating effect is good.

[0017] In the above solution, thanks to the setting of the pretreatment box, the column and the first guiding roller, the pretreatment liquid can be filled in the pretreatment box, and the lifting of the pretreatment box can be controlled to immerse the medium barrier aluminized polyethylene film guided by the first guiding roller in the pretreatment liquid in the pretreatment box for pretreatment, so as to improve the adhesion during surface coating, and cooperate with the cleaning box to clean the medium barrier aluminized polyethylene film after pretreatment and then convey it to the coating roller for coating processing, realizing an integrated and rapid processing of coating and pretreatment, and greatly improving the coating efficiency.

[0018] To sum up, the present device can not only evenly coat the medium barrier aluminized polyethylene film to ensure the coating effect, but also preprocess the medium barrier aluminized polyethylene film before coating, effectively improving the coating efficiency and having a good overall use effect. Description of the Drawings

[0019] The attached drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present utility model, and together with the specification are further used to explain the principles of the present utility model and enable those skilled in the relevant art to implement and use the present utility model.

[0020] Figure 1 It is a schematic structural diagram of a coating device for a medium-barrier aluminized polyethylene film;

[0021] Figure 2 For the coating device of the medium-barrier aluminized polyethylene film Figure 1 An enlarged schematic diagram of the structure at A;

[0022] Figure 3 It is a schematic structural diagram of a pretreatment tank of a coating device for a medium-barrier aluminized polyethylene film;

[0023] Figure 4 It is a schematic diagram of the internal structure of a pretreatment tank of a coating device for a medium-barrier aluminized polyethylene film.

[0024] [Reference numerals]

[0025] 1. Base; 2. Side plate; 3. Coating roller; 4. Liquid infusion pipe; 401. Nozzle; 5. Scraper; 6. Pretreatment tank; 601. Limiting plate; 602. Driving rod; 603. Slide block; 604. Support rod; 7. Column; 701. Hanging plate; 702. First guiding roller; 8. Cleaning tank; 801. Second guiding roller.

[0026] As shown in the figure, in order to clearly implement the structure of the embodiments of the present utility model, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present utility model to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0027] The following describes in detail a coating device for a medium-barrier aluminized polyethylene film provided by the present utility model in combination with the attached drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also implement them in other alternative ways; and the attached drawings are only for more specific description of the embodiments and are not intended to specifically limit the present utility model.

[0028] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0029] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0030] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0031] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0032] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a coating device for a medium barrier aluminum-coated polyethylene film, comprising a base 1, two side panels 2 are fixed to one end of the upper end surface of the base 1, and a liquid infusion tube 4 and a coating roller 3 are rotatably installed between the top ends of the two side panels 2, and a plurality of nozzles 401 facing the coating roller 3 are fixed to the lower end surface of the liquid infusion tube 4. Specifically, the interior of the liquid infusion tube 4 is hollow and connected to the nozzle 401, and one end of the liquid infusion tube 4 extends out of the side panel 2, which can be used to connect to the coating material box for coating processing.

[0033] Meanwhile, vertical scrapers 5 are also installed at the tops of the two side plates 2, and the lower ends of the scrapers 5 are horizontally flush with the upper surface of the coating roller 3. Therefore, the surface coating of the middle barrier aluminized polyethylene film can be further scraped flat by the scrapers 5 to make it uniform, so as to improve the coating effect.

[0034] As Figure 1 , Figure 3 and Figure 4 shown, at one end of the upper end surface of the base 1 away from the side plate 2, a liftable pretreatment tank 6 is provided. Among them, the bottom of the pretreatment tank 6 is vertically inserted into the base 1, and two vertical limiting plates 601 are symmetrically fixed. A slot for the bottom of the pretreatment tank 6 to be placed is formed in the base 1. The two limiting plates 601 are respectively in sliding contact with the inner sides of both sides of the slot in the base 1. And a driving rod 602 is rotatably installed at the bottom of the slot in the base 1. Two opposite threaded sections are symmetrically formed on the driving rod 602, and each threaded section respectively penetrates through a slider 603. The two sliders 603 are symmetrically distributed in the slot of the base 1 and are in sliding contact with the bottom surface of the slot in the base 1. In addition, the tops of the two sliders 603 are respectively hinged with support rods 604, and the tops of the two support rods 604 are respectively movably installed at both ends of the lower end surface of the pretreatment tank 6. Therefore, by rotating the driving rod 602, the two sliders 603 can be controlled to move towards each other, and then the pretreatment tank 6 can be driven to lift through the support rods 604.

[0035] Meanwhile, both ends of the pretreatment tank 6 are cooperated with columns 7 fixed on the base 1. At the tops of the two columns 7, hanging plates 701 extending downward into the pretreatment tank 6 are fixed. A plurality of horizontal first guiding rollers 702 are rotatably installed between the two hanging plates 701, so that the first guiding rollers 702 can guide the coating device of the middle barrier aluminized polyethylene film to pass above the pretreatment tank 6. When the pretreatment tank 6 rises, the pretreatment liquid contained in the pretreatment tank 6 can be used to perform pretreatment processing on the middle barrier aluminized polyethylene film. Specifically in implementation, the pretreatment liquid can be an acidic liquid or an alkaline liquid, which is used to remove the oxide layer on the surface of the middle barrier aluminized polyethylene film to improve its adhesion effect during coating.

[0036] In addition, a cleaning tank 8 is also fixed on the upper end surface of the base 1, and the cleaning tank 8 is located at a position between the pretreatment tank 6 and the side plate 2. Specifically, the cleaning tank 8 is filled with cleaning water, the top opening position of the cleaning tank 8 is lower than the top opening of the pretreatment tank 6, and a horizontal second guiding roller 801 is rotatably installed in the middle of the opening of the cleaning tank 8.

[0037] The working principle provided by the present utility model for the coating device of the middle barrier aluminized polyethylene film. When in use, the middle barrier aluminized polyethylene film can be guided by the first guiding roller 702 to pass above the pretreatment tank 6. At this time, the driving rod 602 can be rotated to control the slider 603 and the support rod 604 to drive the pretreatment tank 6 to lift and lower, so that the middle barrier aluminized polyethylene film can be immersed in the lifted pretreatment tank 6. Then, by containing pretreatment liquid in the pretreatment tank 6, pretreatment processing can be carried out on the middle barrier aluminized polyethylene film to remove dirt and oxide film on its surface.

[0038] Meanwhile, the pretreated middle barrier aluminized polyethylene film can be cleaned through the cleaning tank 8 to remove the residual pretreatment liquid on its surface, and then it is transported to the coating roller 3, realizing integrated and rapid processing of coating and pretreatment, which can greatly improve the coating efficiency.

[0039] In summary, this device can not only uniformly coat the middle barrier aluminized polyethylene film to ensure the coating effect, but also carry out pretreatment processing on the middle barrier aluminized polyethylene film before coating, effectively improving the coating efficiency, and the overall use effect is good.

[0040] The present utility model covers any substitutions, modifications, equivalent methods and solutions made within the essence and scope of the present utility model. To enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the following preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without these detailed descriptions. In addition, well-known methods, processes, procedures, components and circuits are not described in detail to avoid unnecessary confusion to the essence of the present utility model.

[0041] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A coating device for a medium barrier aluminized polyethylene film, comprising a base (1), characterized in that: Two side plates (2) are fixed to one end of the upper end surface of the base (1); a liquid infusion tube (4) and a coating roller (3) are rotatably mounted between the top ends of the two side plates (2); and a plurality of nozzles (401) facing the coating roller (3) are fixed to the lower end surface of the liquid infusion tube (4); A liftable pre-treatment box (6) is provided at one end of the upper end surface of the base (1) away from the side plate (2), and columns (7) fixed to the base (1) are provided at both ends of the pre-treatment box (6), and hanging plates (701) extending downward into the pre-treatment box (6) are fixed to the tops of the two columns (7), and a plurality of horizontal first guide rollers (702) are rotatably mounted between the two hanging plates (701), and a cleaning box (8) is also fixed to the upper end surface of the base (1), and the cleaning box (8) is located between the pre-treatment box (6) and the side plate (2).

2. The coating device for medium barrier aluminized polyethylene film according to claim 1, characterized in that: The interior of the infusion tube (4) is hollow and communicates with the nozzle (401), and one end of the infusion tube (4) extends out of the side plate (2).

3. The coating device for the medium barrier aluminum-coated polyethylene film according to claim 2, characterized in that: A vertical scraper (5) is also installed on the top of the two side plates (2), and the lower end of the scraper (5) is flush with the upper surface of the coating roller (3).

4. The coating device for medium barrier aluminized polyethylene film according to claim 1, characterized in that: The bottom of the pretreatment box (6) is vertically inserted into the base (1), and two vertical limiting plates (601) are symmetrically fixed thereto. A slot is provided in the base (1) for the bottom of the pretreatment box (6) to be inserted therein, and the two limiting plates (601) are respectively slidably abutted against the inside of two sides of the slot in the base (1).

5. The coating device for medium barrier aluminized polyethylene film according to claim 4, characterized in that: A driving rod (602) is rotatably mounted at the bottom of the slot in the base (1); the driving rod (602) is symmetrically structured with two opposite threaded sections, each of which is threadedly penetrated by a slider (603); the two sliders (603) are symmetrically distributed in the slot of the base (1) and slidably abut against the bottom surface of the slot in the base (1).

6. The coating device for the medium barrier aluminum-coated polyethylene film according to claim 5, characterized in that: The top ends of the two sliding blocks (603) are both hingedly mounted with support rods (604), and the top ends of the two support rods (604) are movably mounted on the two ends of the lower end surface of the pretreatment box (6).

7. The coating device for medium barrier aluminized polyethylene film according to claim 1, characterized in that: The cleaning box (8) contains post-cleaning water, the top opening of the cleaning box (8) is located lower than the top opening of the pretreatment box (6), and a horizontal second guide roller (801) is rotatably mounted in the middle of the opening of the cleaning box (8).

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