Coating device for producing PVC (polyvinyl chloride) film

Abstract

The utility model relates to the technical field of coating devices, in particular to a PVC (polyvinyl chloride) film production coating device which comprises a working platform, a first coating roller and a second coating roller, the first coating roller and the second coating roller are rotatably mounted on two sides of the top end of the working platform, are respectively connected with the upper surface and the lower surface of a PVC film in a rolling manner and are used for coating the upper surface and the lower surface of the PVC film; one end of the first coating roller and one end of the second coating roller are connected with a to-be-coated liquid feeding port through rotary joints correspondingly, the first coating roller and the second coating roller are each of a hollow structure, and a plurality of through holes are formed in the side wall of the first coating roller and the side wall of the second coating roller in a penetrating mode. The first coating roller and the second coating roller are rotationally arranged at the top end of the working platform, the upper surface and / or the lower surface of the PVC film can be evenly coated with liquid, abrasion is reduced, and meanwhile the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, specifically a coating equipment for PVC film production. Background Technology

[0002] In the production process of PVC film, the coating device is one of the core equipment. It is mainly used to uniformly coat the PVC paste resin or liquid formula onto the surface of the substrate (such as fabric, non-woven fabric, film, etc.) and form a functional or decorative coating after plasticization.

[0003] In the Chinese Patent Document Database, patent application number 202322382624.1 discloses a coating device for producing PVC floor film. It uses a coating brush to uniformly coat ink onto the surface of the PVC film. However, the friction between the coating brush and the PVC film is relatively large, which may cause wear and tear on both the coating brush and the PVC film, reducing the service life of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a PVC film production coating device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PVC film production coating device, comprising a working platform, a first coating roller and a second coating roller rotatably mounted on both sides of the top of the working platform, the first coating roller and the second coating roller being rolledly connected to the upper and lower surfaces of the PVC film respectively, for coating the upper and lower surfaces of the PVC film, one end of the first coating roller and the second coating roller being connected to the inlet of the liquid to be coated through a rotary joint, and both the first coating roller and the second coating roller having a hollow structure, with several through holes provided through the side walls of the first coating roller and the second coating roller.

[0006] Furthermore, a mounting bracket for support is provided on the outer side of the second coating roller, and the mounting bracket is rotatably connected to the second coating roller. A linear drive component for driving its lifting and lowering is provided on the mounting bracket.

[0007] Furthermore, a first guide roller and a second guide roller are rotatably mounted on the top of the work platform near the second coating roller, and the first guide roller and the second guide roller are axially parallel. A PVC film conveying channel is formed between the first guide roller and the second guide roller, and the first guide roller and the PVC film are rotatably connected to the upper and lower surfaces of the PVC film, respectively.

[0008] Furthermore, a third guide roller is rotatably disposed below the second coating roller, and the third guide roller abuts against the bottom of the PVC film and is rotatably connected to the PVC film.

[0009] Furthermore, the bottom of the work platform is fixed with a support leg, and a converging groove is recessed at the top edge of the work platform, with several collection ports penetrating through the bottom of the converging groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the PVC film production coating device rotates and sets a first coating roller and a second coating roller at the top of the working platform, and the first coating roller and the second coating roller are connected to the liquid inlet to be coated through a rotary joint, which can uniformly coat the liquid on the upper and lower surfaces of the PVC film, while reducing wear. By controlling the opening and closing of the rotary joint on the first coating roller or the second coating roller, single-sided coating or double-sided coating can also be performed as needed, which has strong applicability. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0013] Figure 3 This is a three-dimensional structural diagram of the second coating roller of this utility model;

[0014] In the diagram: 1. Working platform; 101. Support leg; 102. Manifold; 103. Collection port; 104. First support frame; 105. Second support frame; 106. Third support frame; 2. First coating roller; 3. Second coating roller; 301. Rotary joint; 4. Linear drive component; 5. Mounting frame; 6. First guide roller; 7. Second guide roller; 8. Third guide roller; 9. PVC film. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be noted that the terms "first," "second," etc., are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. The term "comprising" and any variations thereof in the specification, claims, and accompanying drawings of the present utility model are intended to cover non-exclusive inclusion.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Please see Figure 1-3 This utility model provides an embodiment of a PVC film production coating device, including a working platform 1, a first coating roller 2 and a second coating roller 3 rotatably mounted on both sides of the top of the working platform 1. The first coating roller 2 and the second coating roller 3 are respectively rolledly connected to the upper and lower surfaces of the PVC film 9 for coating the upper and lower surfaces of the PVC film 9. One end of the first coating roller 2 and the second coating roller 3 are respectively connected to the inlet of the liquid to be coated through a rotary joint 301. The specific structure of the rotary joint 301 is prior art and will not be described in detail here. It can automatically supply liquid to the first coating roller 2 and the second coating roller 3 without affecting the coating process. The rotation of the first coating roller 2 and the second coating roller 3 causes rolling friction between them and the PVC film 9, reducing wear. Both the first coating roller 2 and the second coating roller 3 are hollow structures with several through holes on their side walls. Liquid entering the first coating roller 2 and the second coating roller 3 is then evenly discharged through the through holes on the side walls, which can coat the upper and lower surfaces of the PVC film 9. Furthermore, by controlling the opening and closing of the rotary joint 301, one side of the PVC film 9 can be coated as needed, or both sides can be coated simultaneously to meet different usage requirements.

[0018] The first coating roller 2 is horizontally mounted on one side of the top of the work platform 1 via a first support frame 104. The first support frame 104 is specifically a vertical plate-like structure symmetrically mounted on both sides of the width of the work platform 1. The first coating roller 2 is rotatably mounted between the two vertical plates. The PVC film 9 passes over the first coating roller 2, allowing coating of its lower surface. The second coating roller 3 is horizontally mounted in the middle of the top of the work platform 1 via a second support frame 105. The second support frame 105 is specifically an inverted U-shaped structure with its opening facing downwards. A mounting bracket 5 is provided on the outer side of the second coating roller 3 for support, and the mounting bracket 5 is rotatably connected to the second coating roller 3. The mounting bracket 5 is equipped with a drive mechanism to lift it. The linear drive 4, which can be any type such as a cylinder or an electric push rod, is installed in pairs. The two linear drive 4 are symmetrically and vertically installed on both sides of the top of the second support frame 105. The output end of the linear drive 4 extends to the inside of the second support frame 105 and is fixed to the top of the mounting frame 5. The extension and retraction of the linear drive 4 pushes the second coating roller 3 and the mounting frame 5 to move up and down inside the second support frame 105. A tension sensor (not shown in the figure) can be installed on the shaft of the second coating roller 3. The PVC film 9 passes through the mounting frame 5 from below and coats its upper surface. At the same time, the vertical position of the second coating roller 3 can be automatically adjusted according to the detected tension to avoid damage to the PVC film 9.

[0019] A first guide roller 6 and a second guide roller 7 are rotatably mounted on the top of the working platform 1 near the second coating roller 3 via a third support frame 106. The first guide roller 6 and the second guide roller 7 are axially parallel. The third support frame 106 is specifically a vertical plate structure symmetrically installed on both sides of the width of the working platform 1. The first guide roller 6 and the second guide roller 7 are rotatably installed between the two vertical plates, forming a channel for conveying the PVC film 9. The first guide roller 6 and the PVC film 9 are rotatably connected to the upper and lower surfaces of the PVC film 9, respectively. After the PVC film 9 passes through the first coating roller 2 and the second coating roller 3 in sequence, it finally enters between the first guide roller 6 and the second guide roller 7. On the one hand, this can guide the PVC film 9 to be drawn out horizontally, making it convenient to enter the next process. On the other hand, it can perform secondary extrusion coating of the coated liquid, so that the liquid is evenly attached to the surface of the PVC film 9.

[0020] In this embodiment, a third guide roller 8 is rotatably arranged below the second coating roller 3. The third guide roller 8 is mounted on the mounting frame 5. During coating, the third guide roller 8 abuts against the bottom of the PVC film 9 and is rotatably connected to the PVC film 9 to prevent the second coating roller 3 from pressing the PVC film 9 to the lowest end and causing wear and scratches when it comes into contact with the working platform 1.

[0021] In this embodiment, support legs 101 are symmetrically fixed on both sides of the bottom width of the working platform 1. A confluence channel 102 is recessed at the top edge of the working platform 1. The confluence channel 102 is specifically a rectangular frame structure, and several collection ports 103 are provided through the bottom of the confluence channel 102. When in use, a collection tank (not shown in the figure) can be placed below the working platform 1. The liquid falling to the top of the working platform 1 flows into the confluence channel 102 and then falls into the collection tank through the collection ports 103, which facilitates the collection and treatment of excess liquid from multiple coatings.

[0022] Working principle: The rotary joints 301 at one end of the first coating roller 2 and the second coating roller 3 are both connected to the feed port of the liquid to be coated, and the liquid is fed into the first coating roller 2 and the second coating roller 3. The PVC film 9 first passes through the top of the first coating roller 2, and the bottom end of the PVC film 9 abuts against the top of the first coating roller 2, so that the lower surface of the PVC film 9 can be coated. Then the PVC film 9 passes between the second coating roller 3 and the third guide roller 8. The second coating roller 3 coats the upper surface of the PVC film 9. The mounting frame 5 is driven to rise and fall by the linear drive component 4, which drives the second coating roller 3 and the third guide roller 8 to rise and fall synchronously, and then drives the PVC film 9 to move up and down. The tension of the PVC film 9 can be adjusted as needed to prevent it from breaking. Finally, the PVC film 9 passes through the first guide roller 6 and the second guide roller 7. The upper and lower surfaces of the PVC film 9 are respectively rolled and connected with the first guide roller 6 and the second guide roller 7 to ensure uniform coating.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PVC film production coating apparatus, characterized in that: The device includes a working platform (1), a first coating roller (2) and a second coating roller (3) rotatably mounted on both sides of the top of the working platform (1). The first coating roller (2) and the second coating roller (3) are respectively connected to the upper and lower surfaces of the PVC film (9) for coating the upper and lower surfaces of the PVC film (9). One end of the first coating roller (2) and the second coating roller (3) are respectively connected to the inlet of the liquid to be coated through a rotary joint (301). The first coating roller (2) and the second coating roller (3) are both hollow structures. Several through holes are provided through the side walls of the first coating roller (2) and the second coating roller (3).

2. The PVC film production coating apparatus according to claim 1, characterized in that: The second coating roller (3) is provided with a mounting bracket (5) for support on its outer side, and the mounting bracket (5) is rotatably connected to the second coating roller (3). The mounting bracket (5) is provided with a linear drive (4) for driving its lifting and lowering.

3. The PVC film production coating apparatus according to claim 1, characterized in that: The first guide roller (6) and the second guide roller (7) are rotatably mounted on the top of the working platform (1) near the second coating roller (3), and the first guide roller (6) and the second guide roller (7) are axially parallel. A channel for conveying PVC film (9) is formed between the first guide roller (6) and the second guide roller (7), and the first guide roller (6) and the PVC film (9) are rotatably connected to the upper and lower surfaces of the PVC film (9) respectively.

4. The PVC film production coating apparatus according to claim 1, characterized in that: A third guide roller (8) is rotatably disposed below the second coating roller (3), and the third guide roller (8) abuts against the bottom of the PVC film (9) and is rotatably connected to the PVC film (9).

5. The PVC film production coating apparatus according to claim 1, characterized in that: The work platform (1) is fixed with a support leg (101) at the bottom. The top edge of the work platform (1) is recessed and a converging groove (102) is provided. Several collection ports (103) are provided through the bottom of the converging groove (102).

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