Online coating device based on optical film

Abstract

The utility model discloses an on-line coating device based on an optical film, which comprises a rack, a guide roller group, a first coating roller, a second coating roller, a coating supply pipe, a scraping mechanism, a guide plate and a scraper plate, and a gap for the optical film to pass through is formed between the first coating roller and the second coating roller; a plurality of coating nozzles are arranged on the coating supply pipe, the coating nozzles are used for spraying the coating onto a material guide plate which is obliquely arranged, and the material scraping mechanism can move in the length direction of the material guide plate; and the side part of the scraper plate is provided with a scraper blade part. The plurality of paint nozzles on the paint supply pipe are uniformly distributed above the material guide plate, so that the paint can be uniformly supplied at the initial stage; the scraping mechanism can reciprocate on the guide plate to scrape the coating, so that the uniform distribution of the coating on the guide plate is ensured; and the scraper blade part of the scraper plate is in contact with the surface of the second coating roller, so that the coating flowing to the surface of the second coating roller can be uniformly coated on the optical film to form a uniform coating.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical film coating device field especially based on online coating device of optical film. BACKGROUND

[0002] Optical film has wide application in display equipment, touch screen, lens and other optical fields, in order to improve the performance of optical film, different functional coating such as anti-reflection, anti-glare, anti-fingerprint, anti-static or brightening coating etc. is often coated on its surface, and these coating requires uniform coating thickness to ensure optical effect uniformity, meet the high-precision requirement of product.

[0003] In prior art, traditional optical film coating device is difficult to realize stable control of coating flow supply in coating process, leading to local accumulation or deficiency of coating on the surface of coating roller, thereby causing uneven coating distribution or unstable thickness etc., and making it difficult for coating to form uniform thin layer on the surface of optical film, affecting the optical performance of optical film and product quality.

[0004] Therefore, prior art has defects and needs improvement. UTILITY MODEL CONTENT

[0005] The utility model solves technical problems: provide a kind of online coating device based on optical film, coating is uniform, effectively improve the product quality.

[0006] To achieve this purpose, the utility model adopts the following technical scheme: a kind of online coating device based on optical film, including rack, guide roller group, first coating roller, second coating roller, coating supply pipe, material scraping mechanism, guide plate and scraper plate;

[0007] The guide roller group, the first coating roller and the second coating roller are sequentially arranged on the rack along the conveying direction of the optical film, the first coating roller and the second coating roller are respectively provided with a driving motor, and a gap for the optical film to pass through is formed between the first coating roller and the second coating roller.

[0008] The second coating roller is arranged on the rack through a mounting frame, and the coating supply pipe, the guide plate and the scraper plate are sequentially arranged on the mounting frame from top to bottom.

[0009] The coating supply pipe is provided with a plurality of coating nozzles along its length direction, the coating nozzles are used to spray the coating in the coating supply pipe on the guide plate below, the guide plate is inclined relative to the horizontal plane, and the height of the guide plate gradually decreases in the direction close to the second coating roller.

[0010] The scraping mechanism comprises a rodless cylinder and a scraping rod, the rodless cylinder is arranged on the top of the mounting frame, the movable end of the rodless cylinder is connected with the scraping rod, the bottom of the scraping rod is abutted with the guide plate, and the rodless cylinder is used to drive the scraping rod to move along the length direction of the guide plate.

[0011] The side of the scraper plate is provided with a scraping blade part, which is abutted on the surface of the second coating roller to uniformly smear the coating flowing onto the second coating roller.

[0012] The above technical scheme is adopted, and the online coating device based on the optical film sheet further comprises a gap adjusting mechanism, which is used to adjust the gap size between the first coating roller and the second coating roller.

[0013] The gap adjusting mechanism comprises a bearing seat, a push-pull cylinder, a sliding rail and a sliding block, the bearing seat is connected with the two shaft ends of the first coating roller, the sliding rail is arranged on the rack along the conveying direction of the optical film sheet, and the bottom of the bearing seat is connected with the sliding rail through the sliding block, so that the first coating roller can move along the extension direction of the sliding rail.

[0014] The end of the sliding rail is provided with a support seat, the push-pull cylinder is arranged on the support seat, the movable end of the push-pull cylinder is arranged towards the bearing seat, and the bearing seat is connected with the bearing seat through a connecting rod.

[0015] The above technical scheme is adopted, and the online coating device based on the optical film sheet further comprises a gap adjusting mechanism, which is used to adjust the gap size between the first coating roller and the second coating roller.

[0016] The above technical scheme is adopted, and the online coating device based on the optical film sheet further comprises a waste collecting box, which is arranged below the scraper plate to collect the coating scraped off from the surface of the second coating roller.

[0017] The above technical scheme is adopted, and the online coating device based on the optical film sheet further comprises an adjusting screw rod and a coating support;

[0018] The coating support is arranged at the side end of the mounting frame, the coating support is provided with a sliding groove channel, the end of the scraper plate is provided with a sliding seat, and the sliding seat can move along the sliding groove channel.

[0019] The adjusting screw rod penetrates through the coating support and is connected with the sliding seat, the adjusting screw rod is used to adjust the distance between the scraping blade part and the second coating roller, and the end of the adjusting screw rod is provided with a handle convenient for hand rotating adjustment.

[0020] Adopting the technical scheme, the online coating device based on the optical film sheet is characterized in that the coating support is provided with a positioning chute, and the side end of the material guide plate is arranged in the positioning chute.

[0021] Adopting the technical scheme, the online coating device based on the optical film sheet is characterized in that the first coating roller is a rubber roller, and the second coating roller is a steel roller.

[0022] Compared with the prior art, the online coating device based on the optical film sheet has the following beneficial effects:

[0023] The plurality of coating nozzles on the coating supply pipe are uniformly distributed above the material guide plate, so that the coating can be uniformly supplied in the initial stage, and local accumulation of the coating caused by single coating nozzle supply is avoided; meanwhile, the material guide plate is arranged to be inclined relative to the horizontal plane, so that the coating can be naturally flowed to the second coating roller by gravity, the flow resistance of the coating is reduced, and the coating is uniformly covered on the surface of the second coating roller; the rodless cylinder can drive the material scraping rod to move along the length direction of the material guide plate, the uniform distribution of the coating on the material guide plate is ensured by scraping the coating, and the generation of air bubbles is reduced, so that the uniformity and effect of the coating of the optical film sheet are improved; the scraping edge part of the scraper plate is in contact with the surface of the second coating roller, so that the coating flowed to the surface of the second coating roller is uniformly coated on the optical film sheet to form a uniform coating layer. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0025] The structures, proportions, sizes, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical substantial significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0027] Figure 2 It is a schematic diagram of the local structure of the present application;

[0028] Figure 3 It is a schematic diagram of the scraper plate and the flow guide plate mounting structure of the present application;

[0029] Figure 4 Structure diagram of gap adjusting mechanism of the utility model;

[0030] Figure 5 Structure diagram of scraper plate of the utility model. DETAILED DESCRIPTION

[0031] In order to make the utility model's utility model purpose, feature, advantage can be more obvious and easy to understand, below will combine the drawings in the utility model embodiment, to the technical scheme in the utility model embodiment clear, complete description, obviously, the following described embodiments only a part of the utility model embodiment, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without doing creative work belong to the scope of the utility model protection.

[0032] In the description of the utility model, it is understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed in the middle.

[0033] The technical scheme of the utility model will be further illustrated below by combining the drawings and through specific embodiments.

[0034] As Figures 1 to 5 shown, the utility model embodiment provides an online coating device based on optical film piece, including frame 1, guide roller group 2, first coating roller 31, second coating roller 32, coating supply pipe 4, material scraping mechanism 5, guide plate 6 and scraper plate 7;

[0035] The guide roller group 2, the first coating roller 31 and the second coating roller 32 are sequentially arranged on the rack 1 along the conveying direction of the optical film, the first coating roller 31 and the second coating roller 32 are respectively provided with a driving motor 30 at the end, and a gap for the optical film to pass through is formed between the first coating roller 31 and the second coating roller 32. The arrangement of the guide roller group 2 can make the optical film smoothly convey before entering the coating area, prevent the optical film from deviating or wrinkling during the conveying process, and meet the coating requirements of optical films with different thicknesses by adjusting the gap between the first coating roller 31 and the second coating roller 32. The driving motor 30 can drive the first coating roller 31 and the second coating roller 32 to rotate, thereby realizing the traction conveying of the optical film.

[0036] The second coating roller 32 is arranged on the rack 1 through the mounting frame 11, and the coating supply pipe 4, the guide plate 6 and the scraper plate 7 are sequentially arranged on the mounting frame 11 from top to bottom.

[0037] The coating supply pipe 4 is provided with a plurality of coating nozzles 40 along the length direction, the coating nozzles 40 are used to spray the coating in the coating supply pipe 4 on the guide plate 6 below, the guide plate 6 is arranged inclinedly relative to the horizontal plane, the height of the guide plate 6 gradually decreases along the direction close to the second coating roller 32, and the plurality of coating nozzles 40 are uniformly distributed in the length direction of the coating supply pipe 4, which can spray the coating to different positions of the guide plate 6, so that the coating realizes uniform feeding in the initial stage, avoids local accumulation of the coating caused by single coating nozzle 40, and the inclined arrangement of the guide plate 6 can reduce the flow resistance of the coating, so that the coating naturally flows downward under the action of gravity and gradually flows to the surface of the second coating roller 32.

[0038] The coating removing mechanism 5 includes a rodless cylinder 51 and a coating removing rod 52, the rodless cylinder 51 is arranged at the top of the mounting frame 11, the movable end of the rodless cylinder 51 is connected with the coating removing rod 52, the bottom of the coating removing rod 52 abuts against the guide plate 6, and the rodless cylinder 51 is used to drive the coating removing rod 52 to move along the length direction of the guide plate 6. The uniform scraping action of the coating removing rod 52 can not only make the coating uniformly distributed on the surface of the guide plate 6, but also effectively reduce the air bubbles in the coating, thereby improving the coating effect of the optical film.

[0039] The side of the scraper plate 7 is provided with a scraping edge 70, the scraping edge 70 abuts against the surface of the second coating roller 32 to uniformly smear the coating flowing to the second coating roller 32, thereby forming a uniform coating layer on the optical film.

[0040] As Figure 1 And Figure 4As shown, further, the gap adjusting mechanism 8 is used to adjust the gap size between the first coating roller 31 and the second coating roller 32, the gap adjusting mechanism 8 comprises a bearing seat 81, a push-pull cylinder 82, a slide rail 83 and a sliding block 84, the bearing seat 81 is connected with the two shaft ends of the first coating roller 31, the slide rail 83 is arranged on the rack 1 along the conveying direction of the optical film, the bottom of the bearing seat 81 is connected with the slide rail 83 through the sliding block 84, so that the first coating roller 31 can move along the extension direction of the slide rail 83, the end of the slide rail 83 is provided with a support seat 85, the push-pull cylinder 82 is arranged on the support seat 85, the movable end of the push-pull cylinder 82 is arranged towards the bearing seat 81 and is connected with the bearing seat 81 through a connecting rod, so that when the push-pull cylinder 82 acts, the bearing seat 81 can be driven to slide through the connecting rod, so as to quickly adjust the gap size between the first coating roller 31 and the second coating roller 32 without manual intervention, which effectively improves the production efficiency.

[0041] As shown in Figure 4 Further, the gap adjusting mechanism 8 further comprises a limiting screw rod 86, the limiting screw rod 86 is arranged transversely through the support seat 85, and the limiting screw rod 86 is provided with a buffer rubber pad 87 at one end close to the bearing seat 81. The limiting screw rod 86 can prevent the coating effect of the optical film from being affected due to the too large gap.

[0042] As shown in Figure 2 Further, the waste collecting box 9 is arranged below the scraper plate 7 to collect the coating scraped from the surface of the second coating roller 32. The waste collecting box 9 can reduce the waste of coating, and the user can recycle the coating according to the situation, thereby reducing the production cost and improving the resource utilization rate.

[0043] As shown in Figure 3As shown, further, the adjusting screw rod 12 and the paint support 13 are further included, the paint support 13 is arranged at the side end of the mounting frame 11, the paint support 13 is provided with a sliding groove channel 130, the end of the doctor blade 7 is provided with a sliding seat 71, the sliding seat 71 can move along the sliding groove channel 130, the adjusting screw rod 12 passes through the paint support 13 and is connected with the sliding seat 71, the adjusting screw rod 12 is used for adjusting the distance between the doctor blade part 70 and the second coating roller 32, the end of the adjusting screw rod 12 is provided with a handle 121 for facilitating hand rotation adjustment. The distance between the doctor blade part 70 and the second coating roller 32 will affect the thickness of the coating, the adjusting screw rod 12 can drive the sliding seat 71 to move along the sliding groove channel 130, so as to adjust the distance between the doctor blade part 70 and the second coating roller 32, and ensure that the thickness of the coating layer meets the requirements; the end of the adjusting screw rod 12 is provided with the handle 121, so that the operator can easily manually adjust without using additional tools.

[0044] As Figure 3 As shown, further, the paint support 13 is provided with a positioning inclined groove 131, and the side end of the guide plate 6 is arranged in the positioning inclined groove 131. The positioning inclined groove 131 is arranged, so that the guide plate 6 can keep a preset inclination angle, thereby smoothly guiding the paint to the second coating roller 32 along the inclined direction.

[0045] Further, the first coating roller 31 is a rubber roller, and the second coating roller 32 is a steel roller. The surface of the steel roller is smooth and not easy to adhere paint, so that the excess paint after coating is easier to clean, and the difficulty of cleaning and maintenance is reduced, and the rubber roller has a certain flexibility, which can closely adhere to the surface of the optical film during coating, so as to promote the uniform coating of the paint on the optical film.

[0046] The above-described and the above-described embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An online coating device based on optical films, characterized in that, It includes a frame, guide roller assembly, first coating roller, second coating roller, paint supply pipe, scraping mechanism, guide plate, and scraper blade; The guide roller group, the first coating roller and the second coating roller are sequentially arranged on the frame along the conveying direction of the optical film. The ends of the first coating roller and the second coating roller are respectively provided with drive motors, and a gap is formed between the first coating roller and the second coating roller for the optical film to pass through. The second coating roller is mounted on the frame, and the paint supply pipe, guide plate and scraper are arranged on the mounting frame from top to bottom respectively; The paint supply pipe is provided with a plurality of paint nozzles along its length. The paint nozzles are used to spray the paint in the paint supply pipe onto the guide plate below. The guide plate is inclined relative to the horizontal plane, and the height of the guide plate gradually decreases along the direction close to the second coating roller. The scraping mechanism includes a rodless cylinder and a scraping rod. The rodless cylinder is located on the top of the mounting frame, and its movable end is connected to the scraping rod. The bottom of the scraping rod abuts against the guide plate. The rodless cylinder is used to drive the scraping rod to move along the length direction of the guide plate. The side of the scraper blade is provided with a scraping edge, which abuts against the surface of the second coating roller to evenly spread the coating material flowing onto the second coating roller.

2. The online coating apparatus based on optical films according to claim 1, characterized in that, It also includes a gap adjustment mechanism, which is used to adjust the gap between the first coating roller and the second coating roller; The gap adjustment mechanism includes a bearing seat, a push-pull cylinder, a slide rail, and a slider. The bearing seat is sleeved and connected to the two shaft ends of the first coating roller. The slide rail extends along the conveying direction of the optical film and is mounted on the frame. The bottom of the bearing seat is connected to the slide rail through the slider, so that the first coating roller can move along the extension direction of the slide rail. The slide rail is provided with a support seat at its end, and the push-pull cylinder is provided on the support seat. The movable end of the push-pull cylinder is set towards the bearing seat and is connected to the bearing seat through a connecting rod.

3. The online coating apparatus based on optical films according to claim 2, characterized in that, The gap adjustment mechanism also includes a limiting screw, which is arranged laterally through the support base, and a buffer rubber pad is provided at one end of the limiting screw near the bearing seat.

4. The online coating apparatus based on optical films according to claim 1, characterized in that, It also includes a waste collection box located below the scraper blade for collecting paint scraped off the surface of the second coating roller.

5. The online coating apparatus based on optical films according to claim 1, characterized in that, It also includes an adjusting screw and a paint support; The paint support is located on the side of the mounting frame. The paint support is provided with a sliding groove channel. The end of the scraper is provided with a sliding block. The sliding block can move along the sliding groove channel. The adjusting screw passes through the coating support and is connected to the slide. The adjusting screw is used to adjust the distance between the scraper and the second coating roller. The end of the adjusting screw is provided with a handle for easy hand-held rotation adjustment.

6. The online coating apparatus based on optical films according to claim 5, characterized in that, The coating support is provided with a positioning groove, and the side end of the guide plate is located in the positioning groove.

7. The online coating apparatus based on optical films according to claim 1, characterized in that, The first coating roller is a rubber roller, and the second coating roller is a steel roller.

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