Device and method for light-curing gluing of non-uniform-thickness ultra-thin glass

Abstract

The invention relates to an unequal-thickness ultra-thin glass photocuring gluing device and method. The problems that in the prior art, when unequal-thickness ultra-thin glass is glued, the gluing efficiency is low, and the uniformity of a glue layer is poor are solved. The light-curing gluing device for the non-uniform-thickness ultra-thin glass comprises a non-uniform-thickness ultra-thin glass supply unit, a gluing unit, a film covering unit, a rolling unit and a light-curing unit which are connected in sequence. According to the non-uniform-thickness ultra-thin glass photocuring gluing device, the gluing process is redesigned, the treatment process that the gluing unit, the film covering unit and the rolling unit are matched is adopted, efficient filling of a resin material in a groove of non-uniform-thickness ultra-thin glass is achieved, and the non-uniform-thickness ultra-thin glass is obtained. And meanwhile, a resin material in an intermediate product entering the photocuring unit has uniform thickness.

Description

Technical Field

[0001] The invention relates to the field of flexible display, and in particular to a device and method for photocuring glue coating on ultra-thin glass of unequal thickness. Background Art

[0002] At present, the cover plates used in foldable screen mobile phones are mostly film materials and flexible foldable ultra-thin glass. Although flexible foldable ultra-thin glass has excellent bending resistance, it is too thin and has poor impact resistance and explosion resistance. There are currently two solutions to solve the above performance defects: one is to coat the surface with one or more layers of flexible resin material, which can not only protect the ultra-thin glass well, but also has no effect on the bending performance; the other is non-uniform thickness ultra-thin glass, that is, the thickness of the glass in the middle bending zone is only 30-50μm, while the thickness of the non-bending zone is 70-200μm;

[0003] The uneven thickness ultra-thin glass has a bendable middle part, so there is a groove design in the middle part. The existence of the groove makes the uneven thickness ultra-thin glass unable to be directly attached to the display panel, and the groove needs to be filled with flexible resin material.

[0004] For example, CN114907019A discloses a coating device for non-uniform thickness flexible ultra-thin glass, including a high-precision glue dispensing device and a scraping coating device. The non-uniform thickness ultra-thin glass passes through the high-precision glue dispensing device and the scraping coating device in sequence. The non-uniform thickness ultra-thin glass includes a groove area and a non-groove area. The high-precision glue dispensing device fills the groove area with glue, and the scraping coating device coats the non-groove area and the filled groove area. However, the device disclosed in this scheme requires a high-precision industrial camera to scan and locate the groove area contour of the ultra-thin glass, and a high-precision glue dispensing system is used to fill the groove area with glue. A high-precision scraping coating device is required to coat the ultra-thin glass, which has the problem of low coating efficiency. Furthermore, the uniformity of the film layer of the coated product still needs to be further improved. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a device and method for photocuring glue coating on ultra-thin glass of unequal thickness, so as to solve the problems of low glue coating efficiency and poor glue layer uniformity in the current technology for coating ultra-thin glass of unequal thickness.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a device for photocuring and gluing non-uniform thickness ultra-thin glass, wherein the device for photocuring and gluing non-uniform thickness ultra-thin glass comprises a non-uniform thickness ultra-thin glass supply unit, a gluing unit, a coating unit, a rolling unit and a photocuring unit connected in sequence.

[0008] The device for photocuring glue coating on ultra-thin glass of non-uniform thickness provided by the present invention realizes efficient filling of resin material in grooves of ultra-thin glass of non-uniform thickness by redesigning the glue coating process and adopting a processing process in which a glue coating unit, a laminating unit and a rolling unit are coordinated, while making the resin material in the intermediate product entering the photocuring unit have a uniform thickness.

[0009] Furthermore, the glue coating unit uses a full-light curing material for filling, which has a low shrinkage rate, a good filling effect on ultra-thin glass grooves of non-uniform thickness, and a small overall thickness difference of the product.

[0010] As a preferred technical solution of the present invention, the non-uniform thickness ultra-thin glass supply unit includes a process film preparation sub-unit and a non-uniform thickness ultra-thin glass bonding sub-unit.

[0011] Preferably, the process film preparation subunit comprises a process film unloading device, a process film cutting device and a process film laminating frame and film tearing device which are arranged in sequence.

[0012] Preferably, the non-uniform thickness ultra-thin glass laminating subunit comprises a laminating machine, a non-uniform thickness ultra-thin glass storage device and a positioning device matched with the laminating machine.

[0013] As a preferred technical solution of the present invention, the laminating unit includes a release film roller laminating device.

[0014] As a preferred technical solution of the present invention, the rolling unit includes a double-roll rolling device.

[0015] As a preferred technical solution of the present invention, the light-curing glue coating device for ultra-thin glass of non-uniform thickness is equipped with an automatic material conveying unit.

[0016] As a preferred technical solution of the present invention, the photocuring coating device for non-uniform thickness ultra-thin glass is also equipped with a release film tearing device, a coating cutting device, a shipping film laminating device, a product collecting device and a shipping film receiving device after the photocuring unit.

[0017] Furthermore, the device provided by the present invention can realize a fully automated roll-to-roll process with high efficiency and low cost by cooperating with an automatic material conveying unit and release film tearing equipment, coating cutting equipment, shipping film laminating equipment, product collecting equipment and shipping film receiving equipment, without the problems of material stacking and overcapacity of a single station.

[0018] In a second aspect, the present invention provides a method for photocuring glue coating on ultra-thin glass of unequal thickness, comprising: using the device for photocuring glue coating on ultra-thin glass of unequal thickness as described in the first aspect, comprising:

[0019] The non-uniform thickness ultra-thin glass provided by the non-uniform thickness ultra-thin glass supply unit has one side with grooves coated with glue by a glue coating unit, and after coating with glue, it is coated with a release film provided by a coating unit, and then enters a rolling unit for rolling, and after rolling, enters a light curing unit for curing.

[0020] As a preferred technical solution of the present invention, the non-uniform thickness ultra-thin glass is arranged in a bonding frame of the process film.

[0021] Preferably, the glue used in the gluing is a light-curable flexible resin.

[0022] As a preferred technical solution of the present invention, the volume of the glue used in the gluing is greater than the volume of the groove.

[0023] Preferably, the release surface of the release film in the coating faces the non-uniform thickness ultra-thin glass adhesive coating surface.

[0024] As a preferred technical solution of the present invention, the photocuring glue coating method comprises:

[0025] The non-uniform thickness ultra-thin glass provided by the non-uniform thickness ultra-thin glass supply unit is coated with glue on one side of the glass containing the groove, and after coating, the glass is coated with a release film provided by the coating unit, and then the glass enters the rolling unit for rolling, and then enters the light curing unit for curing;

[0026] The non-uniform thickness ultra-thin glass is arranged in the bonding frame of the process film; the glue used in the coating is a light-cured flexible resin; the volume of the glue used in the coating is greater than the volume of the groove; the release surface of the release film in the coating faces the non-uniform thickness ultra-thin glass coating surface.

[0027] Compared with the prior art solutions, the present invention has the following beneficial effects:

[0028] (1) The fully automated roll-to-roll process is highly efficient and low-cost, without material accumulation or overcapacity at a single station.

[0029] (2) The product is filled with all-UV materials, which has low shrinkage and good filling effect on uneven ultra-thin glass grooves, and the overall thickness difference of the product is small.

[0030] (3) The combination of film curing and roller pressing can accurately control the thickness during film curing, so that the performance of the obtained product is consistent in the thickness direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of a device for photocuring glue coating on ultra-thin glass of unequal thickness provided in Example 1 of the present invention;

[0032] Figure 2 is a schematic diagram of ultra-thin glass of non-uniform thickness targeted by the present invention;

[0033] Figure 3 is a schematic diagram of a process membrane used in Example 1 of the present invention;

[0034] Figure 4 Schematic diagram of the process film laminating frame and film peeling device in Example 1 of the present invention;

[0035] Figure 5 is a state diagram of the process film after the release film of the process film in Example 1 of the present invention is torn off;

[0036] Figure 6 is a schematic diagram of bonding of a bonding device in Embodiment 1 of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of the product obtained after pasting in Example 1 of the present invention;

[0038] Figure 8 is a schematic diagram of a laminating unit in Example 1 of the present invention;

[0039] Fig. 9 is a schematic diagram of a rolling unit in Example 1 of the present invention;

[0040] Fig.10 is a schematic diagram of a release film tearing device in Example 1 of the present invention;

[0041] Fig.11 is a schematic diagram of the upper surface delivery film laminating device in Example 1 of the present invention;

[0042] Fig.12 Schematic diagram of the film tearing and collecting equipment of the process film in Example 1 of the present invention;

[0043] Fig.13 is a schematic diagram of a lower surface delivery film laminating device in Example 1 of the present invention;

[0044] Fig.14 is a schematic diagram of the product obtained after the shipping film is cut in Example 1 of the present invention;

[0045] Fig.15 It is a schematic diagram of the shipping film receiving equipment in Example 1 of the present invention.

[0046] In the figure: 1-process film unloading equipment, 1.1-process film unloading roller, 1.2-process film steering roller, 2-process film cutting equipment, 2.1-first positioning equipment, 3-process film laminating frame film tearing equipment, 3.1-easy-tear laminating material unloading roller, 3.2-easy-tear laminating material receiving roller, 3.3-easy-tear laminating holding manipulator, 4-laminating equipment, 4.1-grabbing equipment, 4.2-laminating roller, 4.3-laminating support roller, 4.4 second positioning equipment, 5-glue coating unit, 6-film coating unit, 6.1-release film unloading roller, 6.2-release film steering roller, 7-rolling unit, 7.1-first rolling roller, 7.2-second rolling roller, 8-light curing unit, 9-release film tearing equipment, 9.1-release film receiving roller, 9.2-release film guide roller, 10-coating Layer cutting equipment, 10.1-third positioning equipment, 11-upper surface shipping film laminating equipment, 11.1-upper surface shipping film feeding roller, 11.2-upper surface shipping film steering roller, 11.3-upper surface shipping film laminating roller, 12-process film tearing and collecting equipment, 12.1-process film collecting roller, 12.2-process film guiding roller, 13-lower surface shipping film laminating equipment, 13.1-lower surface shipping film feeding roller, 13.2-lower surface shipping film steering roller, 13.3-lower surface shipping film laminating roller, 14-shipping film cutting equipment, 14.1-fourth positioning equipment, 15-product collecting equipment, 15.1-fifth positioning equipment, 16-shipping film collecting equipment, 16.1-shipping film residual material collecting roller, 16.2-shipping film residual material guiding roller;

[0047] 100-process film, 101-process film base film, 102-process film adhesive layer, 103-process film release film, 110-fitting frame, 200-easy-tear sticker, 300-non-uniform thickness ultra-thin glass, 310-non-uniform thickness ultra-thin glass non-bending area, 320-non-uniform thickness ultra-thin glass bending area, 410-light-cured coating layer, 420-release film, 421-coating laser cutting edge, 500-upper surface shipping film, 600-lower surface shipping film.

[0048] The present invention is further described in detail below. However, the following examples are only simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims. The terms "first" and "second" are only used to distinguish in the description and have no special meaning. DETAILED DESCRIPTION

[0049] To better illustrate the present invention and facilitate understanding of the technical solution of the present invention, typical but non-limiting embodiments of the present invention are as follows:

[0050] Example 1

[0051] This embodiment provides a device for photocuring glue coating on ultra-thin glass of non-uniform thickness, such as Figure 1 As shown, the light-curing glue coating device for non-uniform thickness ultra-thin glass comprises a non-uniform thickness ultra-thin glass supply unit, a glue coating unit 5, a film coating unit 6, a rolling unit 7 and a light-curing unit 8 connected in sequence. The whole process from process film cutting to box packaging adopts automated production, which has high efficiency, low cost and good film uniformity.

[0052] For example, the non-uniform thickness ultra-thin glass 300 has a thickness of 30-50 μm in the middle bending zone and a thickness of 70-200 μm in the non-bending zone. Figure 2 As shown, it includes a non-bending area 310 of ultra-thin glass with unequal thickness and a bending area 320 of ultra-thin glass with unequal thickness;

[0053] The non-uniform thickness ultra-thin glass supply unit may adopt a commonly used supply system in the art, or may adopt a process film-assisted supply system.

[0054] Exemplarily, the non-uniform thickness ultra-thin glass supply unit includes a process film preparation sub-unit and a non-uniform thickness ultra-thin glass bonding sub-unit;

[0055] Specifically, the process film preparation subunit includes a process film unloading device 1, a process film cutting device 2 and a process film laminating frame film tearing device 3 which are arranged in sequence;

[0056] The process film unloading device 1 is unloading in the form of a roller group, specifically including a process film unloading roller 1.1 and a process film turning roller 1.2; the process film 100 used includes a process film base film 101, a process film adhesive layer 102 and a process film release film 103 on the adhesive layer, such as Figure 3 As shown; the process film 100 used is wound on the process film unwinding roller 1.1 and unwinded through the process film turning roller 1.2. At the same time, the surface of the process film can be maintained in a specific direction, thereby facilitating the subsequent process steps.

[0057] Among them, the process film cutting equipment 2 is a laser cutting equipment, which uses laser cutting to cut the process film release film on the process film 100 to form a bonding frame 110, so that the non-uniform thickness ultra-thin glass 300 can be accurately positioned and bonded to the process film 100. The size of the bonding frame 110 is slightly larger than the size of the non-uniform thickness ultra-thin glass 300.

[0058] Furthermore, in order to enable the process film cutting device 2 to accurately cut the process film 100 , a first positioning device 2 . 1 may be introduced to improve the cutting accuracy of the process film cutting device 2 .

[0059] The process film laminating frame film peeling device 3 includes an easy-to-tear adhesive material discharge roller 3.1, an easy-to-tear adhesive material receiving roller 3.2 and an easy-to-tear adhesive holding manipulator 3.3. Figure 4 As shown; after the laser cutting of the process film cutting device 2, the process film release film 103 is still attached to the process film adhesive layer 102 on the surface of the bonding frame 110. The easy-tear sticker 200 is grabbed from the easy-tear sticker roll by the easy-tear sticker holding robot 3.3, and then the easy-tear sticker 200 is bonded to the surface of the process film release film 103, and then the robot is moved to tear off the process film release film 103 in the cutting area and throw it away. The state diagram of the process film 100 after the process film release film 103 is torn off is shown in FIG. Figure 5 shown.

[0060] Specifically, the non-uniform thickness ultra-thin glass bonding subunit includes a bonding device 4, a non-uniform thickness ultra-thin glass storage device, and a second positioning device 4.4 that cooperates with the bonding device 4. Among them, the bonding device 4 includes a gripping device 4.1, a bonding roller 4.2, and a bonding support roller 4.3. During the bonding process, the bonding frame 110 on the process film 100 is gripped by the second positioning device 4.4 to position it, and then the gripping device 4.1 grabs the non-uniform thickness ultra-thin glass 300 through the non-uniform thickness ultra-thin glass storage device 4.2 and places it precisely in the bonding frame 110, and at the same time, it is bonded to the surface of the process film 100 through the bonding roller 4.2. During the bonding process, the bonding support roller 4.3 provides support to prevent the bonding roller 4.2 from excessively squeezing the material during the bonding process. The flat surface of the non-uniform thickness ultra-thin glass 300 is bonded to the process film adhesive layer 102, such as Figure 6 As shown, the structure of the intermediate product obtained after bonding is as follows Figure 7 shown.

[0061] Exemplarily, the grasping device 4.1 can be selected as a vacuum grasping device or other device commonly used in the field for grasping ultra-thin glass. Furthermore, in order to cooperate with mass production line preparation, it can be a vacuum mesh grasping device that matches the shape of the process film, thereby realizing the grasping of non-uniform thickness ultra-thin glass 300 in large quantities at one time.

[0062] Specifically, the coating unit 5 includes a coating machine, which is used to spread the photocurable coating with 100% active ingredients from the blade of the coating machine onto the non-uniform thickness ultra-thin glass 300 and the process film release film 103 .

[0063] In the present invention, the photocurable coating with 100% effective ingredients is a photocurable resin, namely, a prepolymer, a monomer and a necessary photoinitiator without any solvent and auxiliary agent.

[0064] Specifically, the laminating unit 6 includes a release film roller laminating device, including a release film unloading roller 6.1 and a release film turning roller 6.2, such as Figure 8As shown; during the lamination process, the release film 420 wrapped around the release film unloading roller 6.1 is directly contacted with the release surface of the release film 420 and the photocurable coating layer 410 through the release film turning roller 6.2, isolating the air during the curing process to achieve the purpose of solving the oxygen inhibition.

[0065] Specifically, the rolling unit 7 includes a pair of rolling devices, specifically two parallel rigid rollers, including a first rolling roller 7.1 and a second rolling roller 7.2, such as Fig. 9 As shown; during the rolling process, the non-uniform thickness ultra-thin glass 300 covered with a release film passes through two parallel rigid rollers, the gap between the rigid rollers is adjusted and fixed, and after the double-sided coated and glued ultra-thin glass 300 passes through the gap between the rigid rollers, the coating is limited to a specific thickness and a uniform film thickness is obtained. The gap between the rollers determines the thickness of the coating on the ultra-thin glass.

[0066] Among them, the gap width between the rollers is the thickness of the process film + the thickness of the ultra-thin glass - the thickness of the release film on the surface of the process film + the thickness of the covering release film + the thickness of the glue layer, wherein the thickness of the glue layer is the thickness of the uncured glue layer.

[0067] Specifically, the light curing unit 8 includes an ultraviolet light curing machine to cure the non-uniform thickness ultra-thin glass 30 after rolling.

[0068] Furthermore, the photocuring gluing device for the non-uniform thickness ultra-thin glass 300 is equipped with an automatic material conveying unit, such as a conveyor belt, to form an assembly line, thereby realizing a roll-to-roll production method. In order to ensure the roll-to-roll production method, after the photocuring is completed, a release film tearing device 9, a coating cutting device 10, a shipping film laminating device, a shipping film cutting device 14, a product collecting device 15 and a shipping film receiving device 16 can also be configured accordingly to further improve the entire production process.

[0069] The release film tearing device 9 includes a release film receiving roller 9.1 and a release film guide roller 9.2. Fig.10 As shown, during the film tearing process, the used release film is wound on the roller of the release film receiving roller 9.1, and the release film can be evenly torn off through the release film guide roller 9.2, and the film surface will not be stenciled due to the tearing of the film. The release film can be used again after being torn off.

[0070] The coating cutting device 10 is a laser cutting device, and a corresponding third positioning device 10.1 is also configured for precise cutting. During the cutting process, the third positioning device 10.1 is used to grab and position the non-uniform thickness ultra-thin glass 300, and the laser is controlled to expand around the edge of the ultra-thin glass to a certain size to cut the film layer to facilitate the separation of the non-uniform thickness ultra-thin glass 300 from the process film 100. For example, the range of coating laser cutting is detailed in Fig.11Coated laser cut edge 421.

[0071] The shipping film laminating device includes an upper surface shipping film laminating device 11 and a lower surface shipping film laminating device 13 .

[0072] The upper surface delivery film laminating device 11 is used to laminat the upper surface delivery film 500 on the cut non-uniform thickness ultra-thin glass 300, and specifically includes an upper surface delivery film unloading roller 11.1, an upper surface delivery film turning roller 11.2, and an upper surface delivery film laminating roller 11.3. Fig.11 As shown; during the bonding process, the upper surface shipping film 500 of the upper surface shipping film discharge roller 11.1 is discharged with the help of the upper surface shipping film turning roller 11.2, and then bonded by the upper surface shipping film bonding roller 11.3, thereby achieving the bonding of the upper surface shipping film 500 and the non-uniform thickness ultra-thin glass 300.

[0073] In order to laminate the shipping film on the other surface, after the shipping film is laminated on the upper surface, the remaining process film is removed by introducing the process film tearing and collecting device 12, which includes a process film collecting roller 12.1 and a process film guide roller 12.2. Fig.12 As shown; the remaining process film is torn off by the process film guide roller 12.2, and then collected by the process film receiving roller 12.1. During the tearing process, because the peeling force of the upper surface shipping film is greater than the peeling force of the process film, the asymmetric ultra-thin glass will adhere to the surface of the shipping film instead of being peeled off synchronously with the process film 100.

[0074] Afterwards, the lower surface shipping film laminating device 13 is used to laminat the lower surface shipping film 600. The lower surface shipping film laminating device 13 includes a lower surface shipping film unloading roller 13.1, a lower surface shipping film turning roller 13.2 and a lower surface shipping film laminating roller 13.3. Fig.13 As shown; during the laminating process, the lower surface delivery film 600 on the drum of the lower surface delivery film discharge roller 13.1 is laminated by the cooperation of the lower surface delivery film turning roller 13.2 and the lower surface delivery film laminating roller 13.3.

[0075] In order to facilitate the collection of products, after the shipping film is attached, the shipping film cutting device 14 is used to cut the product. The cutting method is laser cutting. In order to ensure the accuracy of cutting, the corresponding fourth positioning device 14.1 is configured to avoid unreasonable cutting of the product by the shipping film cutting device 14. The schematic diagram of the product after cutting is as follows: Fig.14 shown.

[0076] The collection of the cut products is carried out by the product collecting device 15. The product collecting device 15 can be selected as a collecting device with a vacuum suction cup, or it can be other devices in the field that can realize product collection, but it must be ensured that no damage is caused to the products. In order to facilitate the positioning of the products by the collecting device, a corresponding fifth positioning device 15.1 is also configured to achieve accurate suction of the products and placement in product placement devices such as cartons.

[0077] After the products are collected, the waste film with hollows after cutting still remains in the production line, which is collected by the shipping film collecting device 16, wherein the waste film is wound on the shipping film residual material collecting roller 16.1, and is collected by the shipping film residual material guide roller 16.2. Fig.15 shown.

[0078] The positioning device used above can be selected as a commonly used positioning device in this field, such as an industrial camera or other positioning device.

[0079] Based on the above-mentioned device for photocuring glue coating on ultra-thin glass of non-uniform thickness, the present invention further specifically provides a method for photocuring glue coating on ultra-thin glass of non-uniform thickness, which is as follows:

[0080] Example 2

[0081] The method for photocuring glue coating of non-uniform thickness ultra-thin glass comprises applying glue to a side of the non-uniform thickness ultra-thin glass containing a groove provided by a non-uniform thickness ultra-thin glass supply unit by using a glue coating unit, laminating the non-uniform thickness ultra-thin glass with a release film provided by a laminating unit after the glue coating, and then entering a rolling unit for rolling, and then entering a photocuring unit for curing after rolling;

[0082] The non-uniform thickness ultra-thin glass is arranged in the bonding frame of the process film; the glue used in the coating is a light-cured flexible resin; the volume of the glue used in the coating is greater than the volume of the groove; the release surface of the release film in the coating faces the non-uniform thickness ultra-thin glass coating surface.

[0083] For example, the photocurable flexible resin used can be selected from commonly used photocurable resins in the art, such as ultraviolet light curable resins, such as Changxing 6185, Changxing 615-100, Changxing 61365, DR-U168, SARTOMER CN2273, and the like.

[0084] Furthermore, after solidification, the collection of ultra-thin glass of non-uniform thickness after solidification can be achieved with the help of release film tearing equipment, coating cutting equipment, shipping film laminating equipment, shipping film cutting equipment, product collecting equipment and shipping film receiving equipment.

[0085] The specific process is as follows:

[0086] S1. Process film discharge: Because the ultra-thin glass is too thin and has poor support, it needs a substrate to support it. The process film can provide support for the ultra-thin glass of different thicknesses and adhere it to the process film material, making it difficult for the ultra-thin glass of different thicknesses to slide off while moving with the film material on the assembly line at a fixed speed. The process film is rolled up on the drum and discharged through the drive wheel.

[0087] S2. Process film laser cutting: Cut the release film on the process film into a bonding frame through laser cutting, so that the ultra-thin glass can be accurately positioned and bonded to the process film material.

[0088] S3, process film laminating frame tearing film: tear off the release film on the cut laminating frame. In this step, the robot clamps the easy-tear sticker, moves the robot to adhere the easy-tear sticker to the surface of the release film on the laminating frame, and the process film moves with the assembly line while tearing off the release film on the laminating frame, and then moves the robot to discard the torn release film on the laminating frame.

[0089] S4. Laminating ultra-thin glass of different thicknesses: Laminating ultra-thin glass of different thicknesses in the laminating frame on the process film. The laminating frame on the process film is captured by an industrial camera to position it, and then the laminating machine grabs the ultra-thin glass through a vacuum mesh box and places it precisely in the laminating frame, and at the same time, it is laminated to the surface of the process film through the laminating roller.

[0090] S5. Gluing: Apply the light-curing coating required for ultra-thin glass coating on the surface of the ultra-thin glass. The applied coating should be slightly larger than the required coating, and there is no need to specially control its film thickness and uniformity.

[0091] S6. Release film unloading: The release film is rolled up on a drum and unloaded through a driving wheel. The release film covers the surface of the ultra-thin glass, with the release surface of the release film facing the adhesive coating surface of the ultra-thin glass.

[0092] S7, Rolling: The ultra-thin glass covered with release film passes through two parallel rigid rollers. The gap between the rigid rollers has been adjusted and fixed. After the double-sided coated and glued ultra-thin glass passes through the gap between the rigid rollers, the coating is limited to a specific thickness and a uniform film thickness is obtained.

[0093] S8. Photocuring: The rolled ultra-thin glass passes through a photocuring machine. The material is cured under the action of light and because it does not come into contact with air, there is no oxygen inhibition and the material's performance in the thickness direction does not change.

[0094] S9, Release film tearing and collecting: The used release film is wound on the roller on the drive wheel through the drive wheel, and the release film can be evenly torn off through the guide wheel. The film surface will not be stenciled due to tearing the film. The release film can be used again after being torn off.

[0095] S10, coating laser cutting: The ultra-thin glass is grabbed and positioned by a high-precision industrial camera, and the laser is controlled to expand around the edge of the ultra-thin glass to a certain size to cut the film layer to facilitate the separation of the ultra-thin glass and the process film.

[0096] S11, upper surface shipping film unloading and laminating: a layer of shipping film is laminated on the coating surface, the shipping film is wound on the drum, unloaded through the driving wheel, and laminated through the roller.

[0097] S12, process film tearing: The used process film is wound on the roller of the driving wheel through the driving wheel, and the process film is evenly torn off through the guide wheel. Because the peeling force of the shipping film is greater than the peeling force of the process film, the ultra-thin glass will still adhere to the surface of the shipping film.

[0098] S13, unloading and laminating of the shipping film on the lower surface: a layer of shipping film is applied to the glass surface of the ultra-thin glass, the shipping film is wound on a drum, unloaded through a driving wheel, and laminated through a roller.

[0099] S14, Shipping film laser cutting: Laser cutting of double-sided shipping film around the edge of the product is performed, requiring the two layers of film to be easily separated after cutting.

[0100] S15. Product collection and packaging: A robot with a vacuum suction cup sucks up the coated and cut products and places them accurately in the grooves of the packaging material in the carton.

[0101] S16, shipping film collection: After the shipping film product is cut, it becomes a waste film with hollows, and the waste film is wound on the roller of the driving wheel.

[0102] Application Example 1

[0103] In this application example, the device and method provided in Example 1 are used to apply glue to ultra-thin glass of non-uniform thickness, wherein the thickness of the glass in the middle bending area is 40 μm, the thickness of the non-bending area is 100 μm, and the volume of the groove is 270 mm 3 ;

[0104] The photocurable material used is Changxing 615-100. The thickness of the photocurable material in the bending area after coating and before curing is 80 μm, while the thickness in the non-bending area is 20 μm.

[0105] The total thickness of the process film used is 175 μm, the thickness of the process film base film is 50 μm, the thickness of the process film adhesive layer is 25 μm, and the thickness of the process film release film is 100 μm;

[0106] The thickness of the release film was 50 μm.

[0107] Through testing of the cured product, it was found that the average thickness of the bending zone of the cured adhesive coating was 117μm (including glass), the average of the non-bending zone was 120μm, the extreme difference in thickness in the bending zone was 3μm, and the overall thickness extreme difference was 5μm; the transmittance was >92%, the haze was <0.3, the chromaticity coordinates b* <0.7, the coating elastic modulus was 11MPa, and the coating was bent 200,000 times on the outside at R1.5mm at -20℃ without delamination or breakage.

[0108] Further, in order to illustrate the difference between the present invention and the glue-dispensing coating and curing, the present invention carried out a single-factor variable comparison of the glue-coated products, specifically, the glue was coated by glue-dispensing, then scraped, and then photocured. The process ensured that the glass-related parameters were the same. The thickness of the glue layer after glue-dispensing and scraping was the same as the thickness of the bending zone and non-bending zone of the photocurable material after coating and before curing of the present invention. The average thickness of the bending zone of the obtained product after curing was 115 microns, and the average thickness of the non-bending zone was 120 microns. The extreme difference in thickness of the bending zone was 17 microns, and the overall thickness extreme difference was 22 microns, that is, the thickness uniformity was significantly deteriorated.

[0109] It can be seen from the results of the above embodiments that the device for photocuring glue coating on ultra-thin glass of non-uniform thickness provided by the present invention, by redesigning the glue coating process and adopting a processing process in which a glue coating unit, a coating unit and a rolling unit are coordinated, achieves efficient filling of resin materials in grooves of ultra-thin glass of non-uniform thickness, and at the same time makes the resin material in the intermediate product entering the photocuring unit have a uniform thickness.

[0110] It is stated that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must rely on the above detailed structural features to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of the components selected by the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0111] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0112] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0113] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A device for photocuring glue coating on ultra-thin glass of non-uniform thickness, characterized in that: The light-curing glue coating device for ultra-thin glass of non-uniform thickness comprises a non-uniform thickness ultra-thin glass supply unit, a glue coating unit (5), a film coating unit (6), a rolling unit (7) and a light-curing unit (8) which are connected in sequence.

2. The light-curing glue coating device for ultra-thin glass of non-uniform thickness as claimed in claim 1, characterized in that: The non-uniform thickness ultra-thin glass supply unit includes a process film preparation subunit and a non-uniform thickness ultra-thin glass bonding subunit; Preferably, the process film preparation subunit comprises a process film unloading device (1), a process film cutting device (2) and a process film laminating frame film tearing device (3) which are arranged in sequence; Preferably, the non-uniform thickness ultra-thin glass bonding subunit comprises a bonding device (4), a non-uniform thickness ultra-thin glass storage device and a second positioning device (4.4) matched with the bonding device (4).

3. The light-curing glue coating device for ultra-thin glass of non-uniform thickness as claimed in claim 1 or 2, characterized in that: The laminating unit (6) comprises a release film roller laminating device.

4. The light-curing glue coating device for ultra-thin glass of non-uniform thickness according to any one of claims 1 to 3, characterized in that: The rolling unit (7) comprises a double-roll rolling device.

5. The light-curing glue coating device for ultra-thin glass of non-uniform thickness as claimed in claim 1, characterized in that: The light-curing glue coating device for ultra-thin glass of non-uniform thickness is equipped with an automatic material conveying unit.

6. The light-curing glue coating device for ultra-thin glass of non-uniform thickness according to any one of claims 1 to 5, characterized in that: The photocuring glue coating device for non-uniform-thickness ultra-thin glass is further provided with a release film tearing device (9), a coating cutting device (10), a shipping film laminating device, a shipping film cutting device (14), a product collecting device (15) and a shipping film receiving device (16) after the photocuring unit (8).

7. A method for photocuring glue coating on ultra-thin glass of non-uniform thickness, characterized in that: The photocuring glue coating method comprises using the photocuring glue coating device for ultra-thin glass of non-uniform thickness as claimed in any one of claims 1 to 6, comprising: The non-uniform thickness ultra-thin glass (300) provided by the non-uniform thickness ultra-thin glass supply unit is coated with glue on one side containing the groove. After coating, the glass is coated with a release film (420) provided by the coating unit (6). The glass then enters a rolling unit (7) for rolling. After rolling, the glass enters a light curing unit (8) for curing.

8. The photocuring coating method according to claim 7, characterized in that: The non-uniform thickness ultra-thin glass (300) is arranged in a bonding frame (110) of the process film (100); Preferably, the glue used in the gluing is a light-curable flexible resin.

9. The photocuring coating method according to claim 7 or 8, characterized in that: The volume of glue used in the gluing is greater than the volume of the groove; Preferably, the release surface of the release film (420) in the coating faces the adhesive coating surface of the ultra-thin glass (300) of unequal thickness.

10. The photocuring coating method according to any one of claims 7 to 9, characterized in that: The photocuring glue coating method comprises: The non-uniform thickness ultra-thin glass (300) provided by the non-uniform thickness ultra-thin glass supply unit is coated with glue on one side containing the groove, and after coating, it is coated with a release film (420) provided by the coating unit (6), and then enters the rolling unit (7) for rolling, and after rolling, enters the light curing unit (8) for curing; The non-uniform thickness ultra-thin glass (300) is arranged in a bonding frame (110) of a process film (100); the glue used in the glue coating is a light-curing flexible resin; the volume of the glue used in the glue coating is greater than the volume of the groove; and the release surface of the release film (420) in the coating faces the glue coating surface of the non-uniform thickness ultra-thin glass (300).

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