Coating equipment and method applied to efficient coating of surface of optical film

Abstract

The invention belongs to the technical field of coating equipment, and particularly relates to coating equipment and method applied to efficient coating of the surface of an optical film. The coating equipment comprises a rack, the upper end of the rack is connected with a material receiving winding drum, the lower end of the rack is connected with a material discharging winding drum, and a driving motor used for driving the material receiving winding drum to rotate is installed on the rack; the coating mechanisms are arranged on the two sides of the optical film respectively; the coating mechanism comprises a connecting frame, a roller brush is rotationally connected into the connecting frame, a coating box is arranged below the roller brush, a sliding seat capable of doing reciprocating motion is slidably connected to the guide plate, a pair of supports are fixedly connected to the sliding seat, and a trowelling plate is connected to the supports and used for trowelling coating on the surface of the optical film; according to the coating device, through rotation of the roller brush, the surface of the optical film is coated with paint, meanwhile, the roller body can be driven to rotate, then the two trowelling plates are driven to automatically and horizontally reciprocate, and the paint coated on the surface of the optical film is automatically troweled.

Description

Technical Field

[0001] The present invention relates to the technical field of coating equipment, and in particular to coating equipment and a method for efficiently coating the surface of an optical film. Background Art

[0002] Optical film is an optical medium material with a very smooth surface. It is mainly used in the field of optoelectronics technology and is used to manufacture various optical instruments. When producing optical film, it is necessary to apply raw materials on both sides of the optical film.

[0003] Conventional optical film coating equipment performs coating operations through a coating roller structure. During the coating process, the optical film surface is sprayed with material through a spraying mechanism, and then the surface of the optical film is evenly coated by the rotation of the coating roller. However, spraying easily causes environmental pollution and waste of paint, and although the coating roller can coat evenly, it does not have the effect of smoothing. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a coating device and method for efficient coating on the surface of an optical film. The coating device is capable of coating and automatically smoothing the surface of the optical film, aiming to solve the problems in the background technology.

[0005] In order to achieve the above technical objectives, the specific technical scheme of the present invention is as follows: the coating equipment for efficient coating on the surface of an optical film proposed by the present invention comprises: a frame, wherein the upper end of the frame is connected to a material receiving reel, the lower end is connected to a material discharging reel, and a driving motor for driving the material receiving reel to rotate is installed on the frame; a coating mechanism is fixedly installed on the frame, and the coating mechanism is provided with a pair of and respectively arranged on both sides of the optical film, respectively used for coating the two sides of the optical film; the coating mechanism comprises a connecting frame, the connecting frame is fixedly connected to the frame, a roller brush is rotatably connected in the connecting frame, used for coating the surface of the optical film, and a paint box is arranged below the roller brush, the bottom surface of the roller brush contacts with the paint liquid in the paint box, and the side surface of the roller brush contacts with the optical film; a horizontally arranged guide plate is fixedly connected to the connecting frame, a slide seat capable of reciprocating movement is slidably connected to the guide plate, a pair of brackets are fixedly connected to the slide seat, a trowel plate is connected to the bracket, used for smoothing the paint on the surface of the optical film, and the trowel plate is arranged above the roller brush.

[0006] As a preferred technical solution of the present invention, the connecting frame is rotatably connected to a cylinder, a surface of the cylinder is provided with a pair of spiral grooves in opposite directions, the guide plate is provided with a sliding hole slidably connected to a sliding seat, and the sliding seat is connected to a sliding block slidably connected to the spiral groove, and when the cylinder rotates, the sliding seat is driven to move back and forth.

[0007] As a preferred technical solution of the present invention, a rotating motor for driving the drum to rotate is fixedly installed on the connecting frame, and the drum and the roller brush are connected through a pulley and a belt line transmission.

[0008] As a preferred technical solution of the present invention, a telescopic rod is connected between the bracket and the trowel plate, and a threaded rod is threadedly connected to the bracket, and one end of the threaded rod is rotatably connected to the trowel plate.

[0009] As a preferred technical solution of the present invention, an adjustment mechanism is installed on the connecting frame for adjusting the amount of paint applied by the roller brush on the surface of the optical film; the adjustment mechanism includes a fixed frame and a scraper, the fixed frame is fixedly connected to the connecting frame, and the scraper is in contact with the surface of the roller brush.

[0010] As a preferred technical solution of the present invention, a sliding rod is fixedly connected to the scraper, and the sliding rod is movably connected to the fixed frame; an adjusting block is threadedly connected to the surface of the sliding rod, and a first spring is connected between the adjusting block and the fixed frame; and a stopper is fixedly connected to the end of the sliding rod, and a second spring is connected between the stopper and the fixed frame, and the first spring and the second spring are respectively arranged on both sides of the fixed frame.

[0011] As a preferred technical solution of the present invention, a paint box and a controller are installed above the frame, a pair of feeding pipes are connected to the paint box, the ends of the feeding pipes are arranged in the paint box, the paint box adds paint into the paint box through the feeding pipes, and a liquid level sensor is provided in the paint box, a solenoid valve is installed on the feeding pipe, and the solenoid valve and the liquid level sensor are both electrically connected to the controller.

[0012] As a preferred technical solution of the present invention, a pair of drying mechanisms are installed on the frame, respectively used to dry the two sides of the optical film, and the drying mechanisms are arranged above the coating mechanism; wherein the drying mechanisms include a fan, a wind hood and a heating wire.

[0013] A method for efficiently coating an optical film surface comprises the following steps: Step 1: The receiving reel is driven by a driving motor to rotate, and the unwinding reel is driven to rotate when the receiving reel rotates, so as to rewind the optical device; Step 2: When winding, the rotating motor drives the drum and the roller brush to rotate at the same time. When the roller brush rotates, the paint is applied to the surface of the optical film, and when the drum rotates, the two smearing plates are driven to reciprocate to smooth the paint on the surface of the optical film; Step 3: After coating, the optical film is dried by a drying mechanism and then wound on a receiving reel.

[0014] The beneficial effects of the present invention are: 1. The coating of the present invention can apply the coating on the surface of the optical film through the rotation of the roller brush, and at the same time can drive the drum to rotate, thereby driving the two screed plates to automatically reciprocate horizontally, and automatically smooth the coating on the surface of the optical film, thereby improving the uniformity and flatness of the optical film coating.

[0015] 2. The present invention provides a paint box under the roller brush. When the roller brush rotates, the surface is stained with paint, and then the paint is applied to the surface of the optical film, thereby reducing the waste of paint. A liquid level sensor is provided in the paint box, and the paint box can automatically add paint to the paint box, thereby ensuring that the roller brush is in contact with the paint in the paint box.

[0016] 3. The adjustment mechanism of the present invention is provided with structures such as a scraper, a sliding rod, a first spring and a second spring. By adjusting the pressure between the scraper and the roller brush, the amount of paint attached to the surface of the roller brush is adjusted, thereby adjusting the amount of paint applied to the surface of the optical film. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a coating device for efficient coating on the surface of an optical film proposed in the present invention.

[0018] Figure 2 It is a front view schematic diagram of a coating device for efficient coating on the surface of an optical film proposed by the present invention.

[0019] Figure 3 It is a schematic structural diagram of the coating mechanism proposed in the present invention.

[0020] Figure 4 This is a schematic diagram of the coating mechanism proposed by the present invention from another angle.

[0021] Figure 5 This is a schematic structural diagram of the regulating mechanism proposed in the present invention.

[0022] Figure 6 for Figure 5 A partial enlarged view of point A in the middle.

[0023] In the figure: 1. frame; 2. unwinding reel; 3. receiving reel; 31. driving motor; 4. coating mechanism; 41. connecting frame; 42. adjusting mechanism; 421. fixing frame; 422. scraper; 423. slide bar; 424. adjusting block; 425. first spring; 426. second spring; 427. stopper; 43. roller brush; 44. cylinder; 45. spiral groove; 46. bracket; 47. trowel plate; 48. telescopic rod; 49. threaded rod; 410. guide plate; 411. slide hole; 412. coating box; 413. rotating motor; 414. slide seat; 415. slide block; 5. coating box; 51. feeding pipe; 52. solenoid valve; 6. controller; 7. drying mechanism. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Embodiment: This embodiment discloses a coating device for efficient coating on the surface of an optical film, such as Figure 1-Figure 6 As shown, it comprises: a frame 1, the upper end of the frame 1 is connected to a material receiving reel 3, and the lower end is connected to a material discharging reel 2. By arranging the material receiving reel 3 above the material discharging reel 2, the contamination of the smoothed optical film during the coating process is avoided; and a driving motor 31 for driving the material receiving reel 3 to rotate is installed on the frame 1. The driving motor 31 drives the material receiving reel 3 to rotate and drives the material discharging reel 2 to rotate synchronously at the same time; a coating mechanism 4 is fixedly installed on the frame 1. The coating mechanism 4 is provided with a pair of coating mechanisms 4 respectively arranged on both sides of the optical film, respectively used for coating the two sides of the optical film; a coating box 5 and a controller are installed above the frame 1. 6. A heater and an agitator are provided in the paint box 5 to ensure the fluidity of the paint, and a pair of feeding pipes 51 are connected to the paint box 5. The ends of the feeding pipes 51 are provided in the paint box 412. The paint box 5 adds paint to the paint box 412 through the feeding pipes 51. A liquid level sensor is provided in the paint box 412. A solenoid valve 52 is installed on the feeding pipe 51. The solenoid valve 52 and the liquid level sensor are both electrically connected to the controller 6. The liquid level of the paint in the paint box 412 is monitored by the liquid level sensor, and the controller 6 opens the solenoid valve 52, thereby adding paint to the paint box 412 in time, ensuring that there is enough paint in the paint box 412.

[0026] Preferably, a pair of drying mechanisms 7 are installed on the frame 1, which are used to dry the two sides of the optical film respectively, and the drying mechanism 7 is arranged above the coating mechanism 4; wherein the drying mechanism 7 includes a fan, a wind hood and an electric heating wire; the coated optical film is dried in time by the drying mechanism 7 so that it can be wound on the receiving reel 3.

[0027] like Figure 3-Figure 4 As shown, the coating mechanism 4 includes a connecting frame 41, which is fixedly connected to the frame 1. A roller brush 43 is rotatably connected inside the connecting frame 41 for coating the paint on the surface of the optical film. The surface of the roller brush 43 is provided with bristles, and a paint box 412 is provided below the roller brush 43. The bottom surface of the roller brush 43 is in contact with the paint liquid in the paint box 412, and the side surface of the roller brush 43 is in contact with the optical film. When the roller brush 43 rotates, the paint in the paint box 412 is attached to its surface, thereby coating the paint on the surface of the optical film. Coating in this way can reduce the waste of paint and reduce environmental pollution.

[0028] Among them, a horizontally arranged guide plate 410 is fixedly connected to the connecting frame 41, a slide seat 414 capable of reciprocating movement is slidably connected to the guide plate 410, a pair of brackets 46 are fixedly connected to the slide seat 414, a trowel plate 47 is connected to the bracket 46, and is used to smooth the paint on the surface of the optical film, the trowel plate 47 is in contact with the surface of the optical film, and the side of the trowel plate 47 in contact with the optical film is a smooth surface to avoid damage to the surface of the optical film, and the two trowel plates 47 can fully coat the optical surface when they reciprocate left and right; and the trowel plate 47 is arranged above the roller brush 43, a cylinder 44 is rotatably connected to the connecting frame 41, and a pair of spiral grooves 45 in opposite directions are arranged on the surface of the cylinder 44, and a sliding hole 45 slidably connected to the slide seat 414 is arranged on the guide plate 410 11, and the slide 414 is connected with a slider 415 which is slidably connected with the spiral groove 45, and the slide 414 is driven to move back and forth when the cylinder 44 rotates; a rotating motor 413 for driving the cylinder 44 to rotate is fixedly installed on the connecting frame 41, and the cylinder 44 and the roller brush 43 are connected through a pulley and a belt line transmission; in specific implementation: the rotating motor 413 drives the cylinder 44 and the roller brush 43 to rotate at the same time, and the roller brush 43 applies the paint on the surface of the optical film when it rotates, and when the cylinder 44 rotates, it drives the slide 414 to reciprocate left and right, and then drives the trowel plate 47 to reciprocate to smooth the paint on the surface of the optical film, thereby completing the work of coating and smoothing the surface of the optical film at one time, with high coating efficiency and good paint uniformity and flatness.

[0029] Preferably, a telescopic rod 48 is connected between the bracket 46 and the trowel plate 47, and a threaded rod 49 is threadedly connected to the bracket 46, one end of the threaded rod 49 is rotatably connected to the trowel plate 47; by rotating the threaded rod 49, the position of the trowel plate 47 can be adjusted, and the contact pressure between the trowel plate 47 and the optical film can be adjusted.

[0030] like Figure 5-Figure 6As shown, an adjustment mechanism 42 is installed on the connecting frame 41, which is used to adjust the amount of paint applied to the surface of the optical film by the roller brush 43; the adjustment mechanism 42 includes a fixed frame 421 and a scraper 422, the fixed frame 421 is fixedly connected to the connecting frame 41, and the scraper 422 is in contact with the surface of the roller brush 43; a sliding rod 423 is fixedly connected to the scraper 422, and the number of sliding rods 423 is set to a pair, and the sliding rod 423 is movably connected to the fixing frame 421; an adjustment block 424 is threadedly connected to the surface of the sliding rod 423, and a first spring 425 is connected between the adjustment block 424 and the fixing frame 421; and a stopper 427 is fixedly connected to the end of the sliding rod 423, and the stopper 427 is connected to the fixing frame 421 A second spring 426 is connected between the first spring 425 and the second spring 426, and the first spring 425 and the second spring 426 are respectively arranged on both sides of the fixed frame 421; in specific implementation: when the roller brush 43 rotates, the scraper 422 scrapes off a part of the paint on the surface of the roller brush 43, and the compression degree of the first spring 425 is adjusted by changing the position of the adjustment block 424, thereby adjusting the pressure on the scraper 422, thereby adjusting the pressure between the scraper 422 and the roller brush 43, the greater the pressure, the more paint the scraper 422 scrapes off on the surface of the roller brush 43; the smaller the pressure, the less paint the scraper 422 scrapes off on the surface of the roller brush 43; thereby adjusting the amount of paint on the surface of the optical film by the roller brush 43.

[0031] This embodiment also discloses a method for efficiently coating the surface of an optical film, based on the above-mentioned coating device, comprising the following steps: Step 1: The receiving reel 3 is driven to rotate by the driving motor 31, and the unwinding reel 2 is driven to rotate when the receiving reel 3 rotates, so as to rewind the optical fiber; Step 2: When winding, the rotating motor 413 drives the cylinder 44 and the roller brush 43 to rotate at the same time. When the roller brush 43 rotates, the paint is applied to the surface of the optical film, and when the cylinder 44 rotates, the two smearing plates 47 are driven to reciprocate to smooth the paint on the surface of the optical film; Step 3: After coating, the optical film is dried by a drying mechanism 7 and then wound onto a receiving reel 3 .

[0032] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, 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 coating device for efficient coating of optical film surface, characterized in that: include: A frame (1), wherein the upper end of the frame (1) is connected to a material receiving reel (3), the lower end of the frame (1) is connected to a material discharging reel (2), and a driving motor (31) for driving the material receiving reel (3) to rotate is installed on the frame (1); A coating mechanism (4) is fixedly mounted on the frame (1); the coating mechanism (4) is provided with a pair and is respectively arranged on two sides of the optical film, and is used to coat the two side surfaces of the optical film; The coating mechanism (4) comprises a connecting frame (41), the connecting frame (41) being fixedly connected to the frame (1), a roller brush (43) being rotatably connected inside the connecting frame (41) and being used for coating the coating on the surface of the optical film, and a coating box (412) being provided below the roller brush (43), the bottom surface of the roller brush (43) being in contact with the coating liquid in the coating box (412), and the side surface of the roller brush (43) being in contact with the optical film; The connecting frame (41) is fixedly connected to a horizontally arranged guide plate (410), the guide plate (410) is slidably connected to a slide seat (414) capable of reciprocating movement, the slide seat (414) is fixedly connected to a pair of brackets (46), the brackets (46) are connected to a trowel plate (47) for smoothing the paint on the surface of the optical film, and the trowel plate (47) is arranged above the roller brush (43).

2. The coating device for efficient coating on the surface of an optical film according to claim 1, characterized in that: The connecting frame (41) is rotatably connected to a cylinder (44), a surface of the cylinder (44) is provided with a pair of spiral grooves (45) in opposite directions, the guide plate (410) is provided with a sliding hole (411) slidably connected to a sliding seat (414), and the sliding seat (414) is connected to a sliding block (415) slidably connected to the spiral groove (45), and when the cylinder (44) rotates, the sliding seat (414) is driven to reciprocate.

3. The coating device for efficient coating on the surface of an optical film according to claim 2, characterized in that: A rotating motor (413) for driving the cylinder (44) to rotate is fixedly mounted on the connecting frame (41), and the cylinder (44) and the roller brush (43) are connected via a pulley and a belt line transmission.

4. The coating device for efficient coating on the surface of an optical film according to claim 3, characterized in that: A telescopic rod (48) is connected between the bracket (46) and the trowel plate (47), and a threaded rod (49) is threadedly connected to the bracket (46), and one end of the threaded rod (49) is rotatably connected to the trowel plate (47).

5. The coating device for efficient coating on the surface of an optical film according to claim 4, characterized in that: An adjusting mechanism (42) is installed on the connecting frame (41) for adjusting the amount of paint applied by the roller brush (43) on the surface of the optical film; the adjusting mechanism (42) comprises a fixing frame (421) and a scraper (422); the fixing frame (421) is fixedly connected to the connecting frame (41), and the scraper (422) is in contact with the surface of the roller brush (43).

6. The coating device for efficient coating on the surface of an optical film according to claim 5, characterized in that: The scraper (422) is fixedly connected to a slide bar (423), and the slide bar (423) is movably connected to a fixed frame (421); an adjusting block (424) is threadedly connected to the surface of the slide bar (423), and a first spring (425) is connected between the adjusting block (424) and the fixed frame (421); and a stopper (427) is fixedly connected to the end of the slide bar (423), and a second spring (426) is connected between the stopper (427) and the fixed frame (421), and the first spring (425) and the second spring (426) are respectively arranged on both sides of the fixed frame (421).

7. The coating device for efficient coating on the surface of an optical film according to claim 6, characterized in that: A paint box (5) and a controller (6) are installed above the frame (1); a pair of feeding pipes (51) are connected to the paint box (5); the ends of the feeding pipes (51) are arranged in the paint box (412); the paint box (5) adds paint into the paint box (412) through the feeding pipes (51); a liquid level sensor is arranged in the paint box (412); a solenoid valve (52) is installed on the feeding pipe (51); and both the solenoid valve (52) and the liquid level sensor are electrically connected to the controller (6).

8. The coating device for efficient coating on the surface of an optical film according to claim 7, characterized in that: A pair of drying mechanisms (7) are installed on the frame (1), respectively used to dry the two sides of the optical film, and the drying mechanisms (7) are arranged above the coating mechanism (4); wherein the drying mechanisms (7) include a fan, a wind hood and an electric heating wire.

9. A method for efficiently coating an optical film surface, using the coating device for efficiently coating an optical film surface as claimed in claim 8, characterized in that: The following steps are involved: Step 1: The receiving reel (3) is driven to rotate by a driving motor (31), and when the receiving reel (3) rotates, the unwinding reel (2) is driven to rotate, so that the optical device is wound up; Step 2: When winding, the rotating motor (413) drives the cylinder (44) and the roller brush (43) to rotate at the same time, and the roller brush (43) applies the paint on the surface of the optical film when rotating, and the cylinder (44) drives the two smearing plates (47) to reciprocate when rotating, so as to smooth the paint on the surface of the optical film; Step 3: After coating, the optical film is dried by a drying mechanism (7) and then wound onto a receiving reel (3).

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