Film laminating apparatus for display panel

Abstract

The application discloses a kind of film device of display panel, including panel conveying mechanism, film material take-up mechanism, film stripping and laminating mechanism, first visual positioning component and second visual positioning component;Panel conveying mechanism is configured to be able to move between feeding and discharging station and laminating station, for carrying display panel;Film material take-up mechanism is used to send film material into film stripping station, and recycle film material base material after stripping protective film piece;Film stripping and laminating mechanism is configured to be able to move between laminating station and film stripping station, for stripping and adsorbing and fixing protective film piece in film stripping station, and for pressing and attaching protective film piece on display panel in laminating station;First visual positioning component is used for visual positioning to display panel;Second visual positioning component is used for visual positioning to protective film piece.The scheme of the present application can realize quickly, accurately and stably attaching protective film piece on display panel, improve laminating precision and efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of display manufacturing equipment, and specifically relates to a coating device for display panels. Background Technology

[0002] During the production process, display panels require a protective film to prevent scratches during movement and testing. The most common method of applying this film is manual, but this method suffers from poor precision and low efficiency. Therefore, the industry has developed automated film-applying machines for display panels. However, the accuracy and efficiency of existing automated film-applying machines still need further improvement. Summary of the Invention

[0003] In view of this, the present invention provides a coating apparatus for a display panel to solve the problem of how to improve coating accuracy and efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A display panel coating apparatus includes a support frame and a panel transport mechanism, a film receiving and discharging mechanism, a film peeling and coating mechanism, a first visual positioning component, and a second visual positioning component connected to the support frame.

[0006] The panel conveying mechanism is configured to move between the loading / unloading station and the lamination station to carry the display panel;

[0007] The membrane material receiving and dispensing mechanism is used to feed the membrane material, including the protective film and the membrane material substrate, into the film peeling station, and to collect the membrane material substrate after the protective film has been peeled off.

[0008] The film peeling and coating mechanism is configured to move between the coating station and the film peeling station, and is used to peel the protective film from the film substrate and adsorb and fix it at the film peeling station, and to press and attach the protective film to the display panel at the coating station.

[0009] The first visual positioning component is disposed between the loading / unloading station and the film coating station, and is used to perform visual positioning of the display panel loaded on the panel conveying mechanism;

[0010] The second visual positioning component is disposed between the film coating station and the film peeling station, and is used to perform visual positioning of the protective film adsorbed and fixed on the film peeling and coating mechanism.

[0011] The film material handling mechanism includes a film peeling platform, a feeding assembly, and a receiving assembly. The film peeling platform is located in the film peeling station, and the feeding assembly and the receiving assembly are respectively located on the sides of the film peeling platform. The feeding assembly conveys the film material from the first end of the film peeling platform onto the film peeling platform. The film peeling and coating mechanism peels off the protective film from the film material substrate on the film peeling platform and adheres and fixes it. The receiving assembly pulls the film material substrate after peeling off the protective film downwards along the second end of the film peeling platform and recycles it. The second end of the film peeling platform has a downward-sloping chamfered surface that is inclined towards the first end of the film peeling platform. A film peeling roller is arranged below the chamfered surface. The film material substrate is pulled out from the gap between the chamfered surface and the film peeling roller at the second end of the film peeling platform.

[0012] The film peeling and coating mechanism includes a first linear drive module, a first lifting module, a connecting plate, a swing assembly, a second lifting module, a protective film carrier, and a top pressure roller shaft. The first linear drive module is mounted on the support frame and connected between the coating station and the film peeling station. The first lifting module is movably connected to the first linear drive module. The connecting plate is connected to the output end of the first lifting module. The protective film carrier is located below the connecting plate and is connected to the connecting plate via the swing assembly. The swing assembly is configured to drive the protective film carrier to rotate relative to the connecting plate. The protective film carrier is used to adsorb and fix the protective film. The top pressure roller shaft is located on the side of the protective film carrier and is connected to the connecting plate via the second lifting module.

[0013] In a preferred embodiment, the panel conveying mechanism includes a third linear drive module and a panel platform. The third linear drive module is disposed on the support frame and connected between the loading / unloading station and the laminating station. The panel platform is movably connected to the third linear drive module. The panel platform is provided with a Q-axis drive module capable of driving the panel platform to rotate in the plane of the panel platform. The display panel is loaded on the panel platform.

[0014] In a preferred embodiment, a first ionizing air bar is connected to the side of the support frame located at the lamination station. The first ionizing air bar is used to remove static electricity and dust from the display panel loaded on the panel conveying mechanism.

[0015] In a preferred embodiment, a film-peeling air bar is provided below the film-peeling roller.

[0016] In a preferred embodiment, a second ion air bar is connected on the support frame between the film coating station and the film peeling station. The second ion air bar is used to remove static electricity and dust from the protective film adsorbed and fixed on the film peeling and coating mechanism.

[0017] In a preferred embodiment, the swing assembly includes a rotating module and a third lifting module. The first end of the protective film carrier is connected to the connecting plate via the third lifting module. The middle part of the protective film carrier is rotatably connected to the bottom of the connecting plate via the rotating module. The top pressure roller shaft is connected to the connecting plate via the second lifting module on the outer side of the second end adjacent to the protective film carrier.

[0018] In a preferred embodiment, the rotating module includes a bearing seat connected to the bottom of the connecting plate and a rotating shaft rotatably connected in the bearing seat, and the protective film stage is fixedly connected to the rotating shaft via a connecting block.

[0019] In a preferred embodiment, an auxiliary platform, flush with the protective film platform, is provided on the outer side of the second end of the protective film platform. The auxiliary platform is connected to the connecting plate via a second linear drive module. Driven by the second linear drive module, the auxiliary platform can slide to below the top pressure roller shaft and abut against the second end of the protective film platform. When the protective film is adsorbed and fixed on the protective film platform, one end of the protective film extends from the second end of the protective film platform and connects to the auxiliary platform.

[0020] In a preferred embodiment, the first visual positioning component includes a second bracket, a fourth linear drive module, a first CCD camera, and a second CCD camera. The second bracket is connected to the support frame and located between the loading / unloading station and the laminating station. The fourth linear drive module is connected to the second bracket. The first CCD camera is fixedly connected to the first end of the fourth linear drive module, and the second CCD camera is movably connected to the fourth linear drive module. The lenses of the first CCD camera and the second CCD camera face downwards and are higher than the upper surface of the panel conveying mechanism.

[0021] In a preferred embodiment, the second visual positioning component includes a fifth linear drive module, a third CCD camera, and a fourth CCD camera. The fifth linear drive module is connected to the support frame and located between the film coating station and the film peeling station. The third CCD camera is fixedly connected to the first end of the fifth linear drive module, and the fourth CCD camera is movably connected to the fifth linear drive module. The lenses of the third CCD camera and the fourth CCD camera face upward and are lower than the lower surface of the film peeling and coating mechanism.

[0022] The display panel coating device provided in this embodiment of the invention improves the film peeling and coating mechanism and the film material delivery mechanism, making the process of peeling and gripping the protective film and attaching the protective film more stable. Combined with the visual positioning component, the display panel and the protective film are visually positioned and precisely aligned. This enables the protective film to be attached to the display panel quickly, accurately and stably, improving the coating accuracy and efficiency of the automated coating equipment. Attached Figure Description

[0023] Figure 1 This is a top view of the coating device according to an embodiment of the present invention;

[0024] Figure 2 This is a perspective view of the coating device according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the panel transport mechanism according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the membrane material delivery and take-up mechanism according to an embodiment of the present invention;

[0027] Figure 5 Is it like this? Figure 4 An enlarged schematic diagram of part A in the middle;

[0028] Figure 6 This is a schematic diagram of the film peeling and coating mechanism according to an embodiment of the present invention;

[0029] Figure 7 This is a partial enlarged schematic diagram of the film peeling and coating mechanism according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the top pressure roller according to an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the auxiliary platform according to an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the structure of the first visual positioning component according to an embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of the structure of the second visual positioning component according to an embodiment of the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of the present invention shown in and described with reference to the drawings are merely exemplary, and the present invention is not limited to these embodiments.

[0035] It should be noted that the same or similar reference numerals in the accompanying drawings of the embodiments of the present invention correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship 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, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the invention are shown in the accompanying drawings, while other details that are not closely related to the invention are omitted.

[0037] This invention provides a coating device for a display panel, such as... Figures 1 to 11 As shown, the film coating device mainly includes a support frame 1 and a panel transport mechanism 2, a film feeding and unloading mechanism 3, a film peeling and coating mechanism 4, a first visual positioning component 5, and a second visual positioning component 6 connected to the support frame 1.

[0038] The panel conveying mechanism 2 is configured to move between the loading / unloading station 100 and the laminating station 200, and the panel conveying mechanism 2 is used to carry the display panel 10.

[0039] The membrane material receiving and releasing mechanism 3 is used to send the membrane material 7, which includes a protective film 71 and a membrane material substrate 72, into the film peeling station 300, and to collect the membrane material substrate 72 after the protective film 71 has been peeled off.

[0040] The film peeling and coating mechanism 4 is configured to move between the coating station 200 and the film peeling station 300. The film peeling and coating mechanism 4 is used to peel the protective film 71 from the film substrate 72 at the film peeling station 300 and adsorb and fix it, and to press and attach the protective film 71 onto the display panel 10 at the coating station 200.

[0041] The first visual positioning component 5 is disposed between the loading / unloading station 100 and the film coating station 200, and the first visual positioning component 5 is used to perform visual positioning on the display panel 10 loaded on the panel transport mechanism 2.

[0042] The second visual positioning component 6 is disposed between the film coating station 200 and the film peeling station 300. The second visual positioning component 6 is used to visually position the protective film 71 that is adsorbed and fixed on the film peeling and coating mechanism 4.

[0043] In this embodiment, see Figure 2 and Figure 3 As shown, the panel conveying mechanism 2 mainly includes a third linear drive module 21 and a panel platform 22. The third linear drive module 21 is disposed on the support frame 1 and connected between the loading / unloading station 100 and the laminating station 200. The panel platform 22 is movably connected to the third linear drive module 21, and the display panel 10 is mounted on the panel platform 22. Driven by the third linear drive module 21, the panel platform 22 can move between the loading / unloading station 100 and the laminating station 200. The panel platform 22 is a vacuum adsorption platform, which fixes the display panel 10 by vacuum adsorption.

[0044] Specifically, the third linear drive module 21 includes a cylinder 211, a lead screw 212, a sliding seat 213, and a guide rail 214. The lead screw 212 is connected to the output end of the cylinder 211, and the sliding seat 213 is connected to the lead screw 212 and slidably connected to the guide rail 214. The guide rail 214 extends from the loading / unloading station 100 and connects to the laminating station 200. The panel platform 22 is connected to the sliding seat 213, and a Q-axis drive module (not shown in the figures) capable of driving the panel platform 22 to rotate in its plane is provided in the panel platform 22.

[0045] Furthermore, a first ionizing air bar 23 is connected to the side of the support frame 1 located at the lamination station 200. The first ionizing air bar 23 is used to remove static electricity and dust from the display panel 10 mounted on the panel carrier 22. The first ionizing air bar 23 blows ion air to remove static electricity and dust from the display panel 10, avoiding static damage to the display panel 10 or the generation of air bubbles due to dust during the lamination process.

[0046] In this embodiment, see Figure 2 as well as Figure 4 and Figure 5As shown, the film material handling mechanism 3 includes a film peeling platform 31, a feeding component 32, and a receiving component 33. The film peeling platform 31 is disposed in the film peeling station 300, and the feeding component 32 and the receiving component 33 are respectively disposed on the side of the film peeling platform 31.

[0047] The feeding assembly 32 transports the film material 7 from the first end of the film peeling platform 31 onto the film peeling platform 31. The film peeling and coating mechanism 4 peels the protective film 71 from the film material substrate 72 on the film peeling platform 31 and adsorbs and fixes it. The receiving assembly 33 pulls the film material substrate 72, after the protective film 71 has been peeled off, downward along the second end of the film peeling platform 31 and recycles it.

[0048] It should be noted that, along the length of the membrane material 7, a plurality of independent protective films 71 are sequentially connected to the membrane material substrate 72, that is, the peeling and coating mechanism 4 peels off and adsorbs and fixes one protective film 71 at a time.

[0049] The second end of the film-peeling platform 31 has a downward-sloping chamfered surface 311 that is inclined toward the first end of the film-peeling platform 31. That is, the second end of the film-peeling platform 31 has a linear sharp corner extending along its width (the angle between the top plane and the chamfered surface). A film-peeling roller 312 is disposed below the chamfered surface 311. The film substrate 72 is pulled out from the gap between the chamfered surface 311 and the film-peeling roller 312 at the second end of the film-peeling platform 31. After the film 7 is conveyed onto the film-peeling platform 31, the film substrate 72 is pulled downward and backward from the gap between the chamfered surface 311 and the film-peeling roller 312 at the second end of the film-peeling platform 31. Thus, at the linear sharp corner, the protective film 71 and the film substrate 72 form a separation opening, which makes it easier for the film-peeling and coating mechanism 4 to peel off the protective film 71 and improve the efficiency of the overall coating operation.

[0050] In a preferred embodiment, the angle of the linear sharp corner is set to no more than 30°, that is, in the film peeling platform 31, the included angle between the top plane and the chamfered inclined surface 311 is no more than 30°.

[0051] Furthermore, a peeling air bar 313 is provided below the peeling roller 312. The peeling air bar 313 blows air towards the separation port between the protective film 71 and the film substrate 72, which on the one hand promotes the separation of the protective film 71 from the film substrate 72, and on the other hand blows the protective film 71 toward the peeling and coating mechanism 4 above, which makes the peeling and gripping process of the protective film 71 by the peeling and coating mechanism 4 more stable and smooth, so that the protective film 71 can be more stably adsorbed and fixed on the peeling and coating mechanism 4.

[0052] Specifically, in this embodiment, the feeding assembly 32 includes a feeding roller 321 and a plurality of first guide rollers 322. The feeding roller 321 is disposed on the first end side of the film peeling platform 31, and the plurality of first guide rollers 322 are sequentially arranged between the feeding roller 321 and the first end of the film peeling platform 31. The receiving assembly 33 includes a receiving roller 331 and a plurality of second guide rollers 332. The receiving roller 331 is disposed on the first end side of the film peeling platform 31 and located opposite to the feeding roller 321. The plurality of second guide rollers 332 are sequentially arranged below the film peeling platform 31 between the receiving roller 331 and the second end of the film peeling platform 31.

[0053] The film material 7 is wound around the unloading roller 321 and is transported from the first end of the peeling platform 31 to the peeling platform 31 by a plurality of first guide rollers 322. After the protective film 71 is peeled off, the film material substrate 72 is pulled downward along the second end of the peeling platform 31 and then transported to the take-up roller 331 and wound around the take-up roller 331 by a plurality of second guide rollers 332. At least the take-up roller 331 is configured to be able to rotate actively.

[0054] Furthermore, in this embodiment, a second ionizing air bar 34 is connected to the outer side of the second end of the film peeling platform 31 on the support frame 1. The second ionizing air bar 34 is used to remove static electricity and dust from the protective film 71 adsorbed and fixed on the film peeling and coating mechanism 4. That is, the second ionizing air bar 34 is located between the coating station 200 and the film peeling station 300. After the film peeling and coating mechanism 4 peels off and adsorbs and fixes the protective film 71 at the film peeling station 300, during the process of moving the protective film 71 to the coating station 200, when it passes above the second ionizing air bar 34, the second ionizing air bar 34 blows ion air to remove static electricity and dust from the protective film 71, avoiding static damage to the display panel 10 or the generation of air bubbles due to dust during the coating process.

[0055] In this embodiment, see Figure 2as well as Figures 6 to 9 As shown, the film peeling and coating mechanism 4 mainly includes a first linear drive module 41, a first lifting module 42, a connecting plate 43, a swing assembly 44, a second lifting module 45, a protective film platform 46, and a top pressure roller shaft 47.

[0056] The first linear drive module 41 is disposed on the support frame 1 and connected between the film coating station 200 and the film peeling station 300. The first lifting module 42 is movably connected to the first linear drive module 41, and the connecting plate 43 is connected to the output end of the first lifting module 42. Specifically, a first bracket 40 is connected to the support frame 1, and the first linear drive module 41 is connected to the first bracket 40 and extends from the opposite top of the film coating station 200 to the opposite top of the film peeling station 300.

[0057] The protective film platform 46 is located below the connecting plate 43. The protective film platform 46 is connected to the connecting plate 43 via a swing assembly 44, which is configured to drive the protective film platform 46 to rotate relative to the connecting plate 43. The protective film platform 46 is used to adsorb and fix the protective film 71. The top pressure roller shaft 47 is disposed on the side of the protective film platform 46 and connected to the connecting plate 43 via the second lifting module 45. The protective film platform 46 is a vacuum adsorption platform, which fixes the protective film 71 by vacuum adsorption.

[0058] During the peeling process, the swing assembly 44 drives the protective film platform 46 to a horizontal position, and the first lifting module 42 drives the protective film platform 46 to descend and press against the film material 7 on the peeling platform 31. The protective film 71 is peeled off and adsorbed by vacuum adsorption. Combined with the auxiliary peeling structure with the linear sharp edge formed at the second end of the peeling platform 31, the peeling and gripping process of the protective film 71 by the protective film platform 46 is more stable and smooth, so that the protective film 71 can be more stably adsorbed and fixed on the protective film platform 46.

[0059] During the lamination process, the swing assembly 44 drives the protective film platform 46 to tilt. The first lifting module 42 drives the protective film platform 46 to descend, causing its second end to press the protective film 71 onto the display panel 10. The second lifting module 45 drives the top pressure roller 47 to descend and press onto the display panel 10. The first linear drive module 41 drives the first lifting module 42 to move the protective film platform 46 and the top pressure roller 47 on the surface of the display panel 10. During the movement of the protective film platform 46, the protective film 71 gradually detaches from the protective film platform 46 and is pressed onto the display panel 10. The top pressure roller 47 rolls and presses the protective film 71 onto the display panel 10, making the protective film 71 adhere more tightly to the display panel 10. The protective film carrier 46 is tilted during the film application process. This allows the protective film 71 to detach from the carrier 46 more easily and attach to the display panel 10. It also prevents the first end of the carrier 46 from scratching the display panel 10 during the film application process, thereby improving the stability and efficiency of the film application process.

[0060] In this embodiment, the first lifting module 42 and the second lifting module 45 preferably use cylinders. In a preferred embodiment, an electro-proportional valve 43a is mounted on the connecting plate 43. The electro-proportional valve 43a is connected to the first lifting module 42 and the second lifting module 45 to precisely control the pressure of the protective film carrier 46 and the top pressure roller 47 pressing against the display panel 10, so as to avoid excessive pressure during the film coating process and damage to the display panel 10.

[0061] In the specific embodiment, the swing assembly 44 includes a rotating module 44a and a third lifting module 44b. The first end of the protective film carrier 46 is connected to the connecting plate 43 through the third lifting module 44b. The middle part of the protective film carrier 46 is rotatably connected to the bottom of the connecting plate 43 through the rotating module 44a. The top pressure roller shaft 47 is connected to the connecting plate 43 through the second lifting module 45 on the outer side of the second end adjacent to the protective film carrier 46.

[0062] Furthermore, in this embodiment, the rotating module 44a includes a bearing seat 441 connected to the bottom of the connecting plate 43 and a rotating shaft 442 rotatably connected in the bearing seat 441, and the protective film stage 46 is fixedly connected to the rotating shaft 442 through a connecting block 443.

[0063] In the specific embodiment, the output end of the second lifting module 45 is connected to a roller shaft fixing seat 45a, and the top pressure roller shaft 47 is rotatably connected in the roller shaft fixing seat 45a. The top pressure roller shaft 47 includes a first top pressure roller shaft 47a and a second top pressure roller shaft 47b, which are rotatably connected in the roller shaft fixing seat 45a and linked together. The first top pressure roller shaft 47a and the second top pressure roller shaft 47b are connected to each other from bottom to top in the roller shaft fixing seat 45a.

[0064] The connecting plate 43 has a fixed support plate 45b connected to its second end side. The second lifting module 45 is connected to the fixed support plate 45b, and its output end extends from below the fixed support plate 45b and connects to the roller fixing seat 45a. Furthermore, a plurality of guide posts 45c are slidably connected to the fixed support plate 45b, and the guide posts 45c pass through the fixed support plate 45b and are connected to the roller fixing seat 45a.

[0065] As a preferred embodiment, in this case, an auxiliary platform 48, flush with the protective film platform 46, is provided on the outer side of the second end of the protective film platform 46. The auxiliary platform 48 is connected to the connecting plate 43 via a second linear drive module 49. Specifically, the second linear drive module 49 is connected to the connecting plate 43, and the auxiliary platform 48 is connected to the second linear drive module 49 via a connecting bracket 49a. The auxiliary platform 48, driven by the second linear drive module 49, can slide below the top pressure roller shaft 47 and abut against the second end of the protective film platform 46. When the protective film 71 is adsorbed and fixed onto the protective film platform 46, one end of the protective film 71 extends from the second end of the protective film platform 46 and connects to the auxiliary platform 48. The auxiliary platform 48 is a vacuum adsorption platform.

[0066] During the film application process: First, the second linear drive module 49 drives the auxiliary platform 48 to move towards the second end away from the protective film platform 46, exposing the top pressure roller 47 above, with the portion of the protective film 71 originally connected to the auxiliary platform 48 located below the top pressure roller 47. Next, the protective film platform 46 is controlled to tilt downwards, causing the extended portion of the protective film 71 to adhere to the display panel 10. Then, the top pressure roller 47 is controlled to press down, pressing against the extended portion of the protective film 71, and the protective film platform 46 is driven to move laterally to continue film application. Thus, before the protective film platform 46 moves laterally to continue film application, one end of the protective film 71 is pressed down by the top pressure roller 47, achieving stable fixation and preventing displacement caused by the lateral movement of the protective film platform 46, further improving the accuracy of film application.

[0067] In this embodiment, see Figure 2 and Figure 10 As shown, the first visual positioning component 5 includes a second bracket 51, a fourth linear drive module 52, a first CCD camera 53, and a second CCD camera 54. The second bracket 51 is connected to the support frame 1 and located between the loading / unloading station 100 and the laminating station 200. The fourth linear drive module 52 is connected to the second bracket 51. The first CCD camera 53 is fixedly connected to the first end of the fourth linear drive module 52, and the second CCD camera 54 is movably connected to the fourth linear drive module 52. The lenses of the first CCD camera 53 and the second CCD camera 54 face downwards and are higher than the upper surface of the panel transport mechanism 2. After the display panel 10 is loaded at the loading / unloading station 100, the panel transport mechanism 2, during the process of moving the display panel 10 to the laminating station 200, acquires image information of the display panel 10 through the first CCD camera 53 and the second CCD camera 54 when passing under the first visual positioning component 5, thereby positioning the display panel 10.

[0068] In this embodiment, see Figure 2 and Figure 11As shown, the second visual positioning component 6 includes a fifth linear drive module 61, a third CCD camera 62, and a fourth CCD camera 63. The fifth linear drive module 61 is connected to the support frame 1 and located between the coating station 200 and the peeling station 300. The third CCD camera 62 is fixedly connected to the first end of the fifth linear drive module 61, and the fourth CCD camera 63 is movably connected to the fifth linear drive module 62. The lenses of the third CCD camera 62 and the fourth CCD camera 63 face upwards and are lower than the lower surface of the peeling and coating mechanism 4. After the peeling and coating mechanism 4 peels off and adsorbs the protective film 71 at the peeling station 300, during the process of moving the protective film 71 to the coating station 200, when it passes above the second visual positioning component 6, the third CCD camera 62 and the fourth CCD camera 63 acquire image information of the protective film 71, thereby positioning the protective film 71.

[0069] The film-coating apparatus provided in the above embodiment includes the following steps for attaching the protective film 71 to the display panel 10:

[0070] S1. Load the display panel 10 from the loading / unloading station 100 onto the panel carrier 22 of the panel conveying mechanism 2, and drive the panel carrier 22 toward the film coating station 200.

[0071] S2. When the panel platform 22 moves below the first visual positioning component 5, the first visual positioning component 5 positions the display panel 10 on the panel platform 22 using the image information obtained by the first CCD camera 53 and the second CCD camera 54.

[0072] S3. The panel platform 22 moves to the film coating station 200 and controls the first ion air bar 23 to blow ion air to remove static electricity and dust from the display panel 10.

[0073] S4. The membrane material receiving and releasing mechanism 3 is used to send the membrane material 7, including the protective film 71 and the membrane material substrate 72, into the film peeling station 300.

[0074] S5. The film peeling and coating mechanism 4 moves above the film peeling station 300. The swing component 44 drives the protective film platform 46 to a horizontal position. The first lifting module 42 drives the protective film platform 46 to descend and press against the film material 7 on the film peeling platform 31. The film is fixed by vacuum adsorption. Combined with the auxiliary film peeling structure with the linear sharp corner formed at the second end of the film peeling platform 31, the protective film 71 is peeled off and adsorbed. One end of the protective film 71 extends from the second end of the protective film platform 46 and is connected to the auxiliary platform 48.

[0075] S6. The film peeling and coating mechanism 4 moves the adsorbed and fixed protective film 71 toward the coating station 200; when it moves above the second ion air bar 34, it controls the second ion air bar 34 to blow ion air to remove static electricity and dust from the protective film 71; when it moves above the second visual positioning component 6, the second visual positioning component 6 positions the protective film 71 on the protective film stage 46 using the image information obtained by the third CCD camera 62 and the fourth CCD camera 63.

[0076] S7. The film peeling and coating mechanism 4 moves the protective film 71 to the coating station 200 and onto the display panel 10. Based on the positioning information obtained in steps S2 and S6, the position of the panel stage 22 is adjusted by the third linear drive module 21 and the Q-axis drive module, and / or the position of the protective film stage 46 is adjusted by the first linear drive module 41, so that the display panel 10 on the panel stage 22 and the protective film 71 on the protective film stage 46 are precisely aligned.

[0077] S8. The second linear drive module 49 drives the auxiliary platform 48 to move toward the second end away from the protective film platform 46, exposing the top pressure roller shaft 47 above, and the portion of the protective film 71 originally connected to the auxiliary platform 48 extends to be located below the top pressure roller shaft 47.

[0078] S9. The protective film platform 46 is tilted by the swing assembly 44. The first lifting module 42 drives the protective film platform 46 to descend so that its second end drives the extended portion of the protective film 71 to attach to the display panel 10. The second lifting module 45 drives the top pressure roller shaft 47 to descend and press against the extended portion of the protective film 71.

[0079] S10. The first linear drive module 41 drives the first lifting module 42 to move the protective film platform 46 and the top pressure roller shaft 47 on the surface of the display panel 10. During the movement of the protective film platform 46, the protective film 71 gradually falls off the protective film platform 46 and is pressed and attached to the display panel 10. The top pressure roller shaft 47 rolls and presses the protective film 71 on the display panel 10.

[0080] S11. After the protective film 71 is attached, drive the protective film platform 46 to rise and adjust it to a horizontal position, drive the top pressure roller shaft 47 to rise, and drive the auxiliary platform 48 to move below the top pressure roller shaft 47 and abut against the second end of the protective film platform 46.

[0081] S12. Drive the panel carrier 22 to move to the loading / unloading station 100 and unload the display panel 10 after the protective film 71 is attached.

[0082] In summary, the display panel coating device provided by the embodiments of the present invention improves the film peeling and coating mechanism and the film material receiving and placing mechanism, making the process of peeling and grasping the protective film and the process of attaching the protective film more stable. Combined with the visual positioning component, the display panel and the protective film are visually positioned and accurately aligned. This enables the protective film to be attached to the display panel quickly, accurately and stably, improving the coating accuracy and efficiency of the automated coating equipment.

[0083] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A coating device for a display panel, characterized in that, It includes a support frame and a panel transport mechanism, a film feeding and taking-up mechanism, a film peeling and coating mechanism, a first vision positioning component, and a second vision positioning component connected to the support frame; The panel conveying mechanism is configured to move between the loading / unloading station and the lamination station to carry the display panel; The membrane material receiving and dispensing mechanism is used to feed the membrane material, including the protective film and the membrane material substrate, into the film peeling station, and to collect the membrane material substrate after the protective film has been peeled off. The film peeling and coating mechanism is configured to move between the coating station and the film peeling station, and is used to peel the protective film from the film substrate and adsorb and fix it at the film peeling station, and to press and attach the protective film to the display panel at the coating station. The first visual positioning component is disposed between the loading / unloading station and the film coating station, and is used to perform visual positioning of the display panel loaded on the panel conveying mechanism; The second visual positioning component is disposed between the film coating station and the film peeling station, and is used to visually position the protective film adsorbed and fixed on the film peeling and coating mechanism; The film material handling mechanism includes a film peeling platform, a feeding assembly, and a receiving assembly. The film peeling platform is located in the film peeling station, and the feeding assembly and the receiving assembly are respectively located on the sides of the film peeling platform. The feeding assembly conveys the film material from the first end of the film peeling platform onto the film peeling platform. The film peeling and coating mechanism peels off the protective film from the film material substrate on the film peeling platform and adsorbs and fixes it. The receiving assembly pulls the film material substrate after peeling off the protective film downwards along the second end of the film peeling platform and recycles it. The second end of the film peeling platform has a downward-sloping chamfered surface that is inclined towards the first end of the film peeling platform. A film peeling roller is located below the chamfered surface. The film material substrate is pulled out from the gap between the chamfered surface and the film peeling roller at the second end of the film peeling platform. A film peeling air bar is located below the film peeling roller. The film peeling and coating mechanism includes a first linear drive module, a first lifting module, a connecting plate, a swing assembly, a second lifting module, a protective film platform, and a top pressure roller shaft. The first linear drive module is mounted on the support frame and connected between the coating station and the film peeling station. The first lifting module is movably connected to the first linear drive module. The connecting plate is connected to the output end of the first lifting module. The protective film platform is located below the connecting plate and is connected to the connecting plate via the swing assembly. The swing assembly is configured to drive the protective film platform to rotate relative to the connecting plate. The protective film platform is used to adsorb and fix the protective film. The top pressure roller shaft is located on the side of the protective film platform and connected to the connecting plate via the second lifting module. The swing assembly includes a rotating module and a third lifting module. The rotating module includes a bearing seat connected to the bottom of the connecting plate and a rotating shaft rotatably connected in the bearing seat. The first end of the protective film platform is connected to the connecting plate via the third lifting module. The middle part of the protective film platform is fixedly connected to the rotating shaft via a connecting block, thereby rotatably connecting to the bottom of the connecting plate. The top pressure roller shaft is connected to the connecting plate via the second lifting module on the outer side of the second end adjacent to the protective film platform. An auxiliary platform flush with the protective film platform is provided on the outer side of the second end of the protective film platform. The auxiliary platform is connected to the connecting plate via a second linear drive module. Driven by the second linear drive module, the auxiliary platform can slide to below the top pressure roller shaft and abut against the second end of the protective film platform. When the protective film is adsorbed and fixed on the protective film platform, one end of the protective film extends from the second end of the protective film platform and connects to the auxiliary platform. During the lamination process, the oscillating assembly drives the protective film platform to tilt, the second linear drive module drives the auxiliary platform to move towards a second end away from the protective film platform, and the top pressure roller shaft presses down to contact the display panel. The first linear drive module drives the first lifting module to move the protective film platform and the top pressure roller shaft synchronously on the surface of the display panel. During the movement of the protective film platform, the protective film gradually detaches from the protective film platform, and the top pressure roller shaft rolls and presses the protective film on the display panel. The protective film platform is tilted during lamination to allow the protective film to detach smoothly from the protective film platform while preventing the first end of the protective film platform from scratching the display panel.

2. The coating apparatus according to claim 1, characterized in that, The panel conveying mechanism includes a third linear drive module and a panel platform. The third linear drive module is disposed on the support frame and connected between the loading / unloading station and the laminating station. The panel platform is movably connected to the third linear drive module. The panel platform is provided with a Q-axis drive module capable of driving the panel platform to rotate in the surface of the panel platform. The display panel is loaded on the panel platform.

3. The coating apparatus according to claim 2, characterized in that, A first ionizing air bar is connected to the side of the support frame at the lamination station. The first ionizing air bar is used to remove static electricity and dust from the display panel loaded on the panel transport mechanism.

4. The coating apparatus according to claim 1, characterized in that, A second ion air bar is connected on the support frame between the film coating station and the film peeling station. The second ion air bar is used to remove static electricity and dust from the protective film that is adsorbed and fixed on the film peeling and coating mechanism.

5. The coating apparatus according to claim 1, characterized in that, The first visual positioning component includes a second bracket, a fourth linear drive module, a first CCD camera, and a second CCD camera. The second bracket is connected to the support frame and located between the loading / unloading station and the laminating station. The fourth linear drive module is connected to the second bracket. The first CCD camera is fixedly connected to the first end of the fourth linear drive module, and the second CCD camera is movably connected to the fourth linear drive module. The lenses of the first CCD camera and the second CCD camera face downwards and are higher than the upper surface of the panel conveying mechanism.

6. The coating apparatus according to claim 1, characterized in that, The second visual positioning component includes a fifth linear drive module, a third CCD camera, and a fourth CCD camera. The fifth linear drive module is connected to the support frame and located between the film coating station and the film peeling station. The third CCD camera is fixedly connected to the first end of the fifth linear drive module, and the fourth CCD camera is movably connected to the fifth linear drive module. The lenses of the third CCD camera and the fourth CCD camera face upward and are lower than the lower surface of the film peeling and coating mechanism.

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