A PDP selective optical thin film coating device

Abstract

This invention provides a PDP selective optical thin film coating device, belonging to the field of optical coating technology. It includes a base plate, a frame on top of the base plate, an adjustment component for adjusting the tension of the device, and a coating component for coating. Through the adjustment component, a tension detector is fixedly installed on the tension roller. The tension detector can sense the pressure changes of the film on the tension roller in real time. When excessive film tension is detected, the output end of the telescopic cylinder drives the push rod downwards, which pulls the tension roller downwards, thereby reducing the film tension. This allows for timely adjustment based on the actual film tension, effectively avoiding the problem of uneven coating thickness caused by slight vibrations of the film under winding tension.

Description

Technical Field

[0001] This utility model relates to the field of optical coating technology, and more specifically, to a PDP selective optical thin film coating device. Background Technology

[0002] PDP selective optical thin film coating apparatus is a device used to coat optical thin films in specific areas or on designated surfaces. Selective optical coating can not only improve the optical performance of the device, but also greatly enhance its functionality and service life.

[0003] In the prior art, Chinese patent publication number CN223159494U discloses "an optical polyester film coating device, comprising: a main unit including a processing table, a connecting frame fixedly connected to the upper surface of the processing table, a connecting roller fixedly connected to the connecting frame, a first vertical plate symmetrically fixedly connected to the upper surface of the processing table, two first vertical plates rotatably connected to a connecting rod, a liquid storage tank fixedly connected to the lower surface of the processing table, and an infusion assembly jointly provided on the liquid storage tank and the connecting frame; and an operating unit including an optical polyester film body and two second vertical plates, the optical polyester film body being mounted on the connecting rod and the connecting roller. This invention, by activating an electric telescopic rod, the telescopic end of the electric telescopic rod drives the mounting plate and the coating roller to move, the coating roller abuts against the optical polyester film body, and the movement of the optical polyester film body can drive the coating roller to rotate, allowing the coating roller to evenly coat the optical polyester film body with coating liquid." However, the following defects still exist:

[0004] The current device relies entirely on the mechanical contact of the coating roller to spread the coating liquid. However, during the film winding process, the film tension causes slight vibrations, which can easily lead to uneven film thickness after coating, thus affecting the quality and performance of the film. Therefore, a PDP selective optical film coating device is proposed. Utility Model Content

[0005] The purpose of this invention is to address the problem that existing devices rely entirely on the mechanical contact of the coating roller to spread the coating liquid, and that the film will experience slight vibrations during the film winding process due to film tension. These vibrations can easily lead to uneven film thickness after coating, thus affecting the quality and performance of the film. This invention provides a PDP selective optical film coating device to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] The present invention is as follows: a PDP selective optical thin film coating device, including a base plate, a frame on the top of the base plate, an adjustment component for adjusting the tension of the device on the top of the frame, a coating component for coating on the top of the frame, and a drying component for drying the coated film on one side of the coating component.

[0008] The adjustment assembly includes two sets of upright plates symmetrically bolted to the top of the base plate. Each set of upright plates has a limit groove. Two sets of telescopic cylinders are symmetrically fixedly installed on the top of the base plate. Push rods are installed at the output ends of the two sets of telescopic cylinders. Tension rollers are slidably connected between the two sets of upright plates. The end of the tension roller is fixedly connected to the other end of the push rod.

[0009] As a preferred technical solution of this utility model, the coating assembly includes a storage box fixedly installed on the top of the frame, a transport pipe is installed at the output end of the storage box, multiple sets of nozzles are fixedly installed on the transport pipe, a support roller is connected to the inner side wall of the frame by a bearing, and a comma-shaped scraper is bolted to the inner side wall of the frame.

[0010] As a preferred technical solution of this utility model, the drying component includes a hot air blower fixedly installed on the top of the base plate, a bent pipe is installed at the output end of the hot air blower, an air collection box is fixedly installed at the other end of the bent pipe, and multiple sets of guide plates are rotatably installed on the inner side wall of the air collection box.

[0011] As a preferred technical solution of this utility model, a support frame is bolted to the top of the base plate, and a film feeding roller is rotatably connected to the support frame. The support frame is located on one side of the two sets of upright plates.

[0012] As a preferred technical solution of this utility model, a film-winding roller is rotatably connected to the frame, and the film-winding roller is located on one side of the support roller and below the air collection box.

[0013] As a preferred embodiment of this invention, the comma-shaped scraper is located on one side of the support roller, and the support roller is located below the multiple sets of nozzles.

[0014] As a preferred technical solution of this utility model, a slider is fixedly sleeved at the end of the tension roller, and protrusions are symmetrically arranged on the slider. A groove is opened on the outer side wall of the vertical plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. With the adjustment components in place, a tension detector is fixedly installed on the tension roller during use. The tension detector can sense the pressure changes generated by the film on the tension roller in real time. When the film tension is detected to be too high, the output end of the telescopic cylinder drives the push rod to move downward. The push rod will pull the tension roller downward, thereby reducing the tension of the film. It can be adjusted in time according to the actual tension of the film, effectively avoiding the problem of uneven coating thickness caused by the slight shaking of the film under the winding tension.

[0017] 2. With the coating assembly in place, during use, the optical film passes through the support roller, and the coating liquid in the storage box flows along the transport pipe. Finally, it is evenly sprayed onto the surface of the optical film through multiple sets of nozzles. The comma-shaped doctor blade has a specific shape and cutting edge. When the optical film carrying the initial coating liquid layer passes through the comma-shaped doctor blade, the cutting edge of the comma-shaped doctor blade will maintain a certain gap with the film surface. The excess coating liquid is scraped off through the scraping action, so that the coating liquid forms a uniform and smooth coating on the film surface, which greatly improves the coating quality. Attached Figure Description

[0018] Figure 1 A schematic diagram of the PDP selective optical thin film coating device provided by this utility model;

[0019] Figure 2 One of the side structural schematic diagrams of the PDP selective optical thin film coating device provided by this utility model;

[0020] Figure 3 A second side view of the PDP selective optical thin film coating device provided by this utility model;

[0021] Figure 4 One of the cross-sectional structural schematic diagrams of the PDP selective optical thin film coating device provided by this utility model;

[0022] Figure 5 The second schematic diagram of the cross-sectional structure of the PDP selective optical thin film coating device provided by this utility model.

[0023] The diagram shows: 1. Base plate; 2. Frame; 3. Adjustment assembly; 301. Vertical plate; 302. Limiting groove; 303. Telescopic cylinder; 304. Push rod; 305. Tension roller; 4. Coating assembly; 401. Storage box; 402. Transport pipe; 403. Nozzle; 404. Support roller; 405. Comma scraper; 5. Drying assembly; 501. Hot air blower; 502. Bend; 503. Air collection box; 6. Support frame; 7. Film release roller; 8. Film winding roller; 9. Slide chute; 10. Sliding block. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] like Figure 1 As shown, this embodiment proposes a PDP selective optical thin film coating device, including a base plate 1, a frame 2 is provided on the top of the base plate 1, an adjustment component 3 for adjusting the tension of the device is provided on the top of the frame 2, a coating component 4 for coating is provided on the top of the frame 2, and a drying component 5 for drying the coated film is provided on one side of the coating component 4.

[0029] like Figure 2 and Figure 3 As shown, the adjustment assembly 3 includes two sets of upright plates 301 symmetrically bolted to the top of the base plate 1. Each set of upright plates 301 has a limiting groove 302. Two sets of telescopic cylinders 303 are symmetrically fixedly installed on the top of the base plate 1. Push rods 304 are fitted onto the output ends of both sets of telescopic cylinders 303. A tension roller 305 is slidably connected between the two sets of upright plates 301, with one end of the tension roller 305 fixedly connected to the other end of the push rod 304. In use, a tension detector is fixedly installed on the tension roller 305. The tension detector can sense the pressure changes generated by the film on the tension roller 305 in real time. When excessive film tension is detected, the output end of the telescopic cylinder 303 drives the push rod 304 downwards, which in turn pulls the tension roller 305 downwards, thereby reducing the film tension. This allows for timely adjustment based on the actual film tension, effectively avoiding uneven coating thickness caused by slight vibrations in the film under winding tension.

[0030] like Figure 4 and Figure 5As shown, the coating assembly 4 includes a storage box 401 fixedly installed on the top of the frame 2. A transport pipe 402 is installed at the output end of the storage box 401. Multiple sets of nozzles 403 are fixedly installed on the transport pipe 402. A support roller 404 is connected to the inner wall of the frame 2 by a bearing. A comma-shaped doctor blade 405 is bolted to the inner wall of the frame 2. In use, the optical film passes through the support roller 404, and the coating liquid in the storage box 401 flows along the transport pipe 402. Finally, it is evenly sprayed onto the surface of the optical film through the multiple sets of nozzles 403. The comma-shaped doctor blade 405 has a specific shape and cutting edge. When the optical film carrying the initial coating liquid layer passes through the comma-shaped doctor blade 405, the cutting edge of the comma-shaped doctor blade 405 will maintain a certain gap with the film surface. The excess coating liquid is scraped off by the scraping action, so that the coating liquid forms a uniform and smooth coating on the film surface, which greatly improves the coating quality.

[0031] like Figure 2 and Figure 4 As shown, the drying assembly 5 includes a hot air blower 501 fixedly mounted to the top of the base plate 1. A bent pipe 502 is fitted to the output end of the hot air blower 501, and an air collection box 503 is fixedly mounted to the other end of the bent pipe 502. Multiple sets of guide plates are rotatably mounted on the inner wall of the air collection box 503. The hot air generated by the hot air blower 501 is transported to the air collection box 503 through the bent pipe 502. By adjusting the angle of the guide plates, the outflow direction and distribution range of the hot air can be changed, allowing the hot air to fully contact the film, accelerating the evaporation of the solvent in the coating liquid, and achieving rapid drying of the film.

[0032] like Figure 2 As shown, a support frame 6 is bolted to the top of the base plate 1, and a film feeding roller 7 is rotatably connected to the support frame 6. The support frame 6 is located on one side of the two sets of upright plates 301. Before starting the optical film coating operation, the rolled optical film to be coated is installed on the film feeding roller 7, and the support frame 6 provides a stable support platform for the film feeding roller 7.

[0033] like Figure 2 As shown, a film winding roller 8 is rotatably connected to the frame 2. The film winding roller 8 is located on one side of the support roller 404 and below the air collection box 503. The film passes sequentially through the tension roller 305, the support roller 404, and the comma doctor blade 405, and finally is continuously wound onto the film winding roller 8 to achieve automated winding.

[0034] like Figure 5 As shown, the comma-shaped doctor blade 405 is located on one side of the support roller 404, which is located below the multiple sets of nozzles 403. After the film is unfolded from the film-laying roller 7, it is conveyed onto the support roller 404. With the support of the support roller 404, the film can be accurately positioned within the spray range of the nozzles 403, ensuring that the coating liquid can be evenly sprayed onto the surface of the film. The comma-shaped doctor blade 405 makes the coating liquid form a uniform and smooth coating on the film surface.

[0035] like Figure 3 As shown, a slider 10 is fixedly sleeved at the end of the tension roller 305. Protrusions are symmetrically arranged on the slider 10, and a groove 9 is provided on the outer side wall of the vertical plate 301. The protrusions slide in the groove 9, which ensures the smooth movement of the tension roller 305 when adjusting the tension, reduces the additional tension fluctuations on the film caused by the unstable movement of the tension roller 305, and thus improves the operational stability of the entire coating equipment.

[0036] Specifically, in use, this PDP selective optical thin film coating device works as follows: after the film is unwound from the unwinding roller 7, it passes sequentially through the tension roller 305, the support roller 404, and the comma doctor blade 405, and finally is continuously wound onto the winding roller 8 for automated winding. A tension detector is fixedly installed on the tension roller 305, which can sense the pressure changes generated by the film on the tension roller 305 in real time. When excessive film tension is detected, the output end of the telescopic cylinder 303 drives the push rod 304 to move downward. The push rod 304 pulls the tension roller 305 downward, thereby reducing the film tension. This allows for timely adjustments based on the actual film tension. The adjustment effectively avoids the problem of uneven coating thickness caused by slight vibration of the film under winding tension. The optical film passes through the support roller 404, and the coating liquid in the storage box 401 flows along the transport pipe 402. Finally, it is evenly sprayed onto the surface of the optical film through multiple sets of nozzles 403. The comma doctor blade 405 has a specific shape and cutting edge. When the optical film carrying the initial coating liquid layer passes through the comma doctor blade 405, the cutting edge of the comma doctor blade 405 will maintain a certain gap with the film surface. The excess coating liquid is scraped off by the scraping action, so that the coating liquid forms a uniform and flat coating on the film surface, which greatly improves the coating quality.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A PDP selective optical thin film coating apparatus, comprising a base plate (1), characterized in that, The top of the base plate (1) is provided with a frame (2), the top of the frame (2) is provided with an adjustment component (3) for adjusting the tension of the device, the top of the frame (2) is provided with a coating component (4) for coating, and a drying component (5) for drying the coated film is provided on one side of the coating component (4). The adjustment assembly (3) includes two sets of upright plates (301) symmetrically bolted to the top of the base plate (1). Each set of upright plates (301) has a limit groove (302). Two sets of telescopic cylinders (303) are symmetrically fixedly installed on the top of the base plate (1). Each set of telescopic cylinders (303) has a push rod (304) installed at its output end. Tension rollers (305) are slidably connected between the two sets of upright plates (301). The end of the tension roller (305) is fixedly connected to the other end of the push rod (304).

2. The PDP selective optical thin film coating apparatus according to claim 1, characterized in that, The coating assembly (4) includes a storage box (401) fixedly installed on the top of the frame (2), a transport pipe (402) is installed at the output end of the storage box (401), a plurality of nozzles (403) are fixedly installed on the transport pipe (402), a support roller (404) is connected to the bearing on the inner side wall of the frame (2), and a comma scraper (405) is bolted to the inner side wall of the frame (2).

3. The PDP selective optical thin film coating apparatus according to claim 1, characterized in that, The drying assembly (5) includes a hot air blower (501) fixedly installed on the top of the base plate (1). A bend (502) is installed at the output end of the hot air blower (501). An air collection box (503) is fixedly installed at the other end of the bend (502). Multiple sets of guide plates are rotatably installed on the inner side wall of the air collection box (503).

4. The PDP selective optical thin film coating apparatus according to claim 1, characterized in that, A support frame (6) is bolted to the top of the base plate (1), and a film feeding roller (7) is rotatably connected to the support frame (6). The support frame (6) is located on one side of the two sets of upright plates (301).

5. The PDP selective optical thin film coating apparatus according to claim 3, characterized in that, A film-winding roller (8) is rotatably connected to the frame (2), and the film-winding roller (8) is located on one side of the support roller (404) and below the air collection box (503).

6. The PDP selective optical thin film coating apparatus according to claim 2, characterized in that, The comma scraper (405) is located on one side of the support roller (404), which is located below the multiple sets of nozzles (403).

7. The PDP selective optical thin film coating apparatus according to claim 1, characterized in that, The tension roller (305) is fixedly sleeved with a slider (10), and the slider (10) is symmetrically provided with protrusions. The outer side wall of the vertical plate (301) is provided with a groove (9).

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