Protective film curing device

By using vacuum-free pressure bonding and UV curing technology in the protective film curing device, the problem of fingerprints being imprinted on the surface of 3D flexible curved screen phones during the film application process has been solved, achieving a high yield rate and low cost film application effect.

CN117262337BActive Publication Date: 2026-01-16BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Patent Information

Application Number
CN202210682334.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-06-15
Publication Date
2026-01-16
Estimated Expiration
2042-06-15

AI Technical Summary

Technical Problem

In existing technologies, 3D flexible curved screen mobile phones are prone to fingerprint imprints due to vacuum pressure during the UV film lamination process, which affects the appearance yield and increases disassembly costs.

Method used

A protective film curing device is used to achieve vacuum-free pressure bonding and UV curing of the protective film through the cooperation of the bottom mold and the pressing component, avoiding fingerprints on the curved screen. The side pressing component and elastic support block ensure the bonding effect.

Benefits of technology

It improved the yield rate of electronic devices in terms of appearance, reduced the cost of screen protectors, and enhanced the user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a protective film curing device, which comprises a bottom die and a pressing assembly. The bottom die is provided with a positioning part for positioning an electronic device and protruding a curved screen of the electronic device from the bottom die. The pressing assembly is movably connected to the bottom die to approach and move away from the positioning part. The pressing assembly comprises a pressing film and a side pressing assembly. The pressing film is opposite to the positioning part. The side pressing assembly is connected to a driving part of the pressing film to press the protective film between the pressing film and the curved screen. The protective film curing device provided by the application effectively avoids the occurrence of top printing at the fingerprint position of the curved screen, and has the advantages of high appearance yield of the electronic device and low film pasting cost.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic equipment, in particular to a protective film curing device. BACKGROUND

[0002] In the related art, in order to protect the curved screen, the mobile phone with a 3D flexible curved screen is generally provided with a protective film. In the related art, a UV film with good scratch resistance is generally used, but the UV film has high hardness and large stress. After the protective film is attached by the film attaching machine, the edge of the protective film cannot be perfectly attached to the screen. Therefore, a 3D UV film vacuum fixture is used to attach the edge of the UV film and the UV film is cured by ultraviolet rays. However, after the edge of the UV film is cured by the vacuum fixture, the fingerprint position of the curved screen is easily affected by the vacuum pressure and is easily top printed, which seriously affects the appearance yield of the mobile phone and the user experience, and increases the disassembly cost. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present application provides a protective film curing device, which effectively avoids the top printing of the fingerprint position of the curved screen, has the advantages of high appearance yield of the electronic equipment, and low film attaching cost.

[0005] The protective film curing device according to the embodiment of the present application comprises a bottom die and a pressing assembly. The bottom die has a positioning portion. The positioning plate is used to position the electronic equipment and protrude the curved screen of the electronic equipment from the bottom die. The pressing assembly is movably connected with the bottom die so as to approach and move away from the positioning portion. The pressing assembly comprises a film pressing plate and a side pressing assembly. The film pressing plate is opposite to the positioning portion. The side pressing assembly is drivingly connected with the film pressing plate so as to press the protective film between the film pressing plate and the curved screen.

[0006] After the electronic equipment is initially attached with the protective film by the film attaching machine, the electronic equipment is first positioned in the positioning portion, and then pressed to the set position by the pressing assembly. The film pressing plate is driven by the side pressing assembly to press the protective film, so that the protective film is completely attached to the curved screen. Then, the protective film is irradiated by the UV light for a set time, so that the protective film is cured on the curved screen. In the curing process of the protective film, the vacuum operation is not required, and the fingerprint position of the curved screen is not affected by the vacuum pressure during the curing process. Therefore, the top printing is not easily generated, the appearance yield of the electronic equipment is high, the film attaching cost is low, and the user experience is good.

[0007] In some embodiments, the protective film curing device further comprises an irradiation curing device, which cooperates with the positioning portion to irradiate the arc edge of the protective film.

[0008] In some embodiments, the side pressing assembly is movably connected with the bottom mold in a left-right direction and / or a top-bottom direction, the left-right direction being perpendicular to the length direction of the curved edge of the protective film.

[0009] In some embodiments, the pressing film has a first end and a second end opposite to each other in the left-right direction, the left-right direction being perpendicular to the length direction of the curved edge of the protective film, the first end and / or the second end of the pressing film being rollably connected with the side pressing assembly.

[0010] In some embodiments, the protective film curing device further comprises a base, the bottom mold being pivotally connected with the base, a pivot axis of the bottom mold extending in a front-rear direction, the front-rear direction being consistent with the length direction of the curved edge of the protective film.

[0011] In some embodiments, the side pressing assembly comprises a pressing frame, two air cylinders and pressing members, the two air cylinders being mounted on the pressing frame, the two air cylinders being spaced apart in a left-right direction, the left-right direction being perpendicular to the length direction of the curved edge of the protective film, the two air cylinders being respectively located on two sides of the positioning part, the pressing members corresponding to the air cylinders, the pressing members being connected with pistons of the corresponding air cylinders, the two pressing members being respectively connected with the two ends of the pressing film.

[0012] In some embodiments, the side pressing assembly further comprises an adjusting assembly connecting the pistons and the pressing members, the adjusting assembly comprising a fixing member corresponding to the air cylinders, a guide column and a spring, the fixing member being connected with the piston of the corresponding air cylinder, the guide column being slidably connected with the fixing member, a lower end of the guide column being connected with the pressing member, the spring being sleeved on the guide column and located between the fixing member and the pressing member.

[0013] In some embodiments, an end of the piston connected with the pressing member is inclined towards the direction close to the positioning part.

[0014] In some embodiments, the pressing assembly further comprises a middle pressing member, the middle pressing member being mounted on the pressing frame and located between the two air cylinders, the middle pressing member being opposite to the positioning part so as to press the pressing film against the front surface of the protective film.

[0015] In some embodiments, the positioning part comprises a positioning groove provided on a top surface of the bottom mold, the positioning groove having a first side edge opposite to the curved edge of the curved screen, the top surface of the bottom mold being provided with an elastic supporting block opposite to the middle pressing member, the elastic supporting block being located on one side of the positioning groove along the length direction of the first side edge, a top surface of the elastic supporting block being higher than the front surface of the protective film.

[0016] In some embodiments, the positioning groove further has a second side connecting the two first sides, and the elastic supporting blocks are divided into two groups, the two groups of elastic supporting blocks being arranged on two sides of the positioning groove along the length direction of the first side, and each group of elastic supporting blocks comprises at least two elastic supporting blocks arranged at intervals along the length direction of the second side plate.

[0017] In some embodiments, the protective film curing device further comprises:

[0018] A housing having a curing cavity;

[0019] A rack located in the curing cavity, and the pressing frame being slidably connected with the rack; and

[0020] A driving device installed on the rack and drivingly connected with the pressing frame.

[0021] In some embodiments, the housing is provided with an operation port, and the housing is provided with a safety grating, and the installation grating is adjacent to the operation port.

[0022] In some embodiments, the pressing film comprises a TPU film. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a schematic view of a protective film curing device according to an embodiment of the present application.

[0024] Figure 2 FIG. 2 is a front view of a protective film curing device according to another embodiment of the present application.

[0025] Figure 3 FIG. 3 is a top view of a protective film curing device according to another embodiment of the present application.

[0026] Figure 4 FIG. 4 is a schematic view of a bottom mold of a protective film curing device according to another embodiment of the present application.

[0027] REFERENCE NUMERALS:

[0028] 100, protective film curing device; 1, bottom mold; 11, positioning groove; 2, pressing assembly; 21, pressing film; 22, air cylinder; 23, pressing part; 24, fixing part; 25, spring; 26, guide column; 27, linear bearing; 28, adjusting stud; 29, pressing frame; 3, elastic supporting block; 4, rack. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0030] The application will be described below Figures 1-4 The protective film curing device 100 according to the embodiment of the application is described.

[0031] The protective film curing device 100 according to the embodiment of the application comprises a bottom mold 1 and a pressing assembly 2. The bottom mold 1 has a positioning part for positioning the electronic device and protruding the curved screen of the electronic device from the bottom mold 1. As shown in the figure, taking a mobile phone as an example, after the mobile phone is positioned by the positioning part, the curved screen of the mobile phone is higher than the bottom mold 1. Figure 1

[0032] The pressing assembly 2 is movably connected to the bottom mold 1 so as to be close to and away from the positioning part, that is, the pressing assembly 2 is away from the bottom mold 1 so as to form a space between the bottom mold 1 and the pressing assembly 2 for taking and placing the electronic device, and the pressing assembly 2 is close to the bottom mold 1 so as to press the film 21 to press the front surface of the protective film.

[0033] The pressing assembly 2 comprises a pressing film 21 and a side pressing assembly, the pressing film 21 is opposite to the positioning part, and the side pressing assembly is drivingly connected to the pressing film 21 so as to press the protective film between the pressing film 21 and the curved screen. The side pressing assembly drives the pressing film 21 to further move downward, so that the pressing film 21 wraps and adheres to the protective film on the curved screen, thereby making each position of the protective film in contact with the curved screen.

[0034] According to the protective film curing device 100 according to the embodiment of the application, after the electronic device is preliminarily adhered with the protective film by the film adhering machine, the electronic device is first placed in the positioning part for positioning, then the pressing assembly 2 is pressed to the set position, and the side pressing assembly drives the pressing film 21 to press, so that the protective film is completely adhered to the curved screen, then the protective film is irradiated by the UV light (Ultraviolet Rays) for a set time, so that the curing of the protective film on the curved screen is realized. In the curing process of the protective film, vacuumizing operation is not needed, and the fingerprint position of the curved screen is not affected by the vacuum pressure during the curing, so that the top printing is not easy to occur, the appearance yield rate of the electronic device is high, the film adhering cost is low, and the user has a good use experience.

[0035] It should be noted that the pressing film 21 is a light-transmitting film, so that the light irradiated by the curing device can be irradiated to the protective film.

[0036] In some embodiments, the protective film curing device 100 further comprises an irradiation curing device cooperating with the positioning part so as to irradiate the arc edge of the protective film. The protective film is a UV film, and the irradiation curing device is used to irradiate the ultraviolet light to the curved surface area of the protective film, so as to realize the curing and maintenance of the curved surface area of the protective film, eliminate the stress of the protective film, and ensure the service life of the protective film.

[0037] ​In some embodiments, the side pressing assembly is movably connected with the bottom mold 1 in the left-right direction and / or the up-down direction, the left-right direction being perpendicular to the length direction of the arc edge of the protective film.

[0038] In this way, the pressing film 21 moves with the side pressing assembly in the left-right direction and / or the up-down direction, so as to adjust the pressure of the pressing film 21 on the protective film within the threshold range, thereby ensuring the pressing effect on the protective film.

[0039] In some embodiments, the pressing film 21 has a first end and a second end opposite to each other in the left-right direction, and the first end and / or the second end of the pressing film 21 is / are rollably connected with the side pressing assembly, the left-right direction being perpendicular to the length direction of the arc edge of the protective film.

[0040] The pressing film 21 can be adjusted in length in the left-right direction by rolling the first end and / or the second end of the pressing film 21 on the side pressing assembly, so as to adjust the tension of the pressing film 21 itself, and thus the pressure on the protective film when the pressing film 21 is pressed against the protective film of the electronic device, thereby further ensuring the pressing effect on the protective film.

[0041] In some embodiments, the protective film curing device 100 further comprises a base, and the bottom mold 1 is pivotally connected with the base, the pivot axis of the bottom mold 1 extending in the front-rear direction, the front-rear direction being consistent with the length direction of the arc edge of the protective film.

[0042] That is, the electronic device fixed on the positioning part can be flipped left and right, so as to press the pressing film 21 to press the at least one arc edge of the protective film on the electronic device, thereby better fitting the arc edge of the protective film on the arc edge of the curved screen, effectively ensuring that the protective film does not curl at the arc edge.

[0043] In some embodiments, as shown in Figures 1-3 the side pressing assembly comprises a pressing frame 29, two air cylinders 22 and two pressing members 23. The two air cylinders 22 are both mounted on the pressing frame 29, the two air cylinders 22 are spaced apart in a direction perpendicular to the arc edge of the protective film, and the two air cylinders 22 are respectively located on both sides of the positioning part. The pressing members 23 are in one-to-one correspondence with the air cylinders 22, the pressing members 23 are connected with the pistons of the corresponding air cylinders 22, and the two pressing members 23 are respectively connected with the two ends of the pressing film 21.

[0044] In this way, the two air cylinders 22 simultaneously drive the two ends of the pressing film 21 to press down below the front surface of the protective film, so as to tightly press the protective film on the arc edge of the curved screen by the pressing film 21.

[0045] Specifically, as shown in Figure 2 the two air cylinders 22 are mirror-symmetrically arranged, thereby ensuring the consistency of the movement of the two ends of the pressing film 21 in the up-down direction.

[0046] It should be noted that the specific curing method of the UV film is as follows: the mobile phone with the UV film attached is placed at the positioning portion of the bottom mold, the two air cylinders 22 drive the pressing film 21 to press down, so that the pressing film 21 wraps the arc edge of the curved screen of the mobile phone, and then UV light is irradiated to achieve the plasticity of the UV film on the curved surface, thereby completing the curing of the UV film on the curved screen. At the same time, the pressing of the pressing film 21 to the side surface of the UV film also effectively avoids the deformation of the front surface area of the UV film under pressure, thereby avoiding the occurrence of top printing.

[0047] In some embodiments, the side pressing assembly further comprises an adjusting assembly connecting the piston and the pressing piece 23, the adjusting assembly comprising a fixing piece 24 corresponding to the air cylinder 22, a guide column 26 and a spring 25, the fixing piece 24 being connected with the piston of the corresponding air cylinder 22, the guide column 26 being slidably connected with the corresponding fixing piece 24, the lower end of the guide column 26 being connected with the pressing piece 23, and the spring 25 being sleeved on the guide column 26 and located between the fixing piece 24 and the pressing piece 23.

[0048] Thus, the sliding cooperation of the guide column 26 and the fixing piece 24, combined with the elastic deformation of the spring 25, effectively buffers the tension of the pressing film 21 located between the two pressing pieces 23 during the pressing process, effectively avoids the scrapping of the pressing film 21 due to excessive tension, and further effectively reduces the replacement frequency of the pressing film 21 and the curing cost of the protective film.

[0049] Specifically, the pressing piece 23 is a pressing strip extending along the length direction of the arc edge, the pressing strip being located below the corresponding fixing piece 24 and spaced apart from the fixing piece 24, and the spring 25 being pressed between the pressing strip and the corresponding fixing piece 24.

[0050] In some embodiments, the adjusting assembly further comprises a linear bearing 27, the linear bearing 27 being installed on the fixing piece 24, and the guide column 26 being slidably connected with the linear bearing 27.

[0051] Thus, the sliding precision of the guide column 26 relative to the fixing piece 24 is further ensured, and the stable and accurate pressing of the pressing film 21 to the protective film is further ensured, and the yield rate of the film attachment of the electronic equipment is higher.

[0052] In some embodiments, as shown in Figure 2 and Figure 3 The air cylinder 22 is provided with an adjusting screw column 28 for adjusting the stroke of the piston.

[0053] The air cylinder 22 is a double-stroke air cylinder, the adjusting screw column 28 being connected with the upper end of the piston, and the adjusting screw column 28 being capable of adjusting the upper stroke of the piston to realize the adjustment of the lower stroke of the piston. Thus, by adjusting the adjusting screw column 28, the pressing stroke of the two ends of the pressing film 21 can be adjusted to realize the adjustment of the tension of the pressing film 21, and the scrapping of the pressing film 21 due to excessive tension can also be avoided, and the replacement frequency of the pressing film 21 and the curing cost of the protective film are further effectively reduced.

[0054] As Figure 2 shown, in some embodiments, the end of the piston connected with the pressing piece 23 is inclined towards the direction close to the positioning part.

[0055] At this time, the distance between the two ends of the pressing film 21 gradually decreases during the process of the two pistons driving the two ends of the pressing film 21 to press down, so that the pressing film 21 is more convenient to closely adhere to the arc edge of the curved screen, and then the protective film is tightly pressed on the arc edge of the curved screen, further ensuring the yield rate of the film pasting of the electronic device.

[0056] Alternatively, as Figure 1 shown, the moving direction of the piston can also be up and down.

[0057] In some embodiments, the pressing assembly 2 further comprises a middle pressing piece (not shown in the figure), which is installed on the pressing frame 29 and located between the two air cylinders 22, and the middle pressing piece is opposite to the positioning part so as to press the pressing film 21 on the front surface of the protective film.

[0058] That is, during the process of the side pressing assembly as a whole close to the bottom die 1, the middle pressing piece also moves downward at the same time, and when the side pressing assembly moves downward to the set position, the middle pressing piece presses the pressing film 21 on the front surface of the protective film, thereby ensuring the good adhesion of the front surface of the protective film to the front surface of the curved screen, effectively avoiding the residual bubbles, and further ensuring the yield rate of the film pasting of the electronic device.

[0059] In some embodiments, as Figure 4 shown, the positioning part comprises a positioning groove 11 arranged on the top surface of the bottom die 1, and the positioning groove 11 has a first side edge opposite to the arc edge of the curved screen, and the top surface of the bottom die 1 is provided with an elastic supporting block 3 opposite to the middle pressing piece, the elastic supporting block 3 is located on one side of the positioning groove 11 along the length direction of the first side edge, and the top surface of the elastic supporting block 3 is higher than the front surface of the protective film.

[0060] The middle pressing piece will extrude the elastic supporting block 3 during the process of pressing down, and when the middle pressing piece is in contact with the front surface of the curved screen, the support of the elastic supporting block 3 to the middle pressing piece will reduce the pressing force of the middle pressing piece to the front surface of the curved screen, especially the fingerprint area, thereby effectively avoiding the occurrence of top printing in the fingerprint area, effectively improving the appearance yield rate of the electronic device, and effectively reducing the film pasting cost.

[0061] Specifically, the positioning groove 11 also has a second side edge connecting the two first side edges, and the elastic supporting block 3 has two groups, and the two groups of elastic supporting blocks 3 are arranged on both sides of the positioning groove 11 along the length direction of the first side edge, and each group of elastic supporting blocks 3 comprises at least two elastic supporting blocks 3 arranged at intervals along the length direction of the second side plate.

[0062] Therefore, the support of the four elastic supporting blocks 3 to the middle pressing piece effectively averages the pressing force of the middle pressing piece to each position of the front surface of the curved screen, thereby further avoiding the generation of top printing on the front surface of the curved screen.

[0063] In some embodiments, the protective film curing device 100 further comprises a cabinet, a frame 4 and a driving device. The cabinet has a curing cavity, the frame 4 is located in the curing cavity, the pressing frame 29 is slidably connected with the frame 4, and the driving device is installed on the frame 4 and drivingly connected with the pressing frame 29.

[0064] The driving device can be a motor, and the pressing frame 29 reciprocally slides along the vertical direction relative to the frame 4 to realize the operation of the pressing frame 29 approaching and moving away from the bottom mold 1.

[0065] In some embodiments, the cabinet is provided with an operation port, and a safety light barrier is arranged on the cabinet and installed adjacent to the operation port.

[0066] The staff takes and places the electronic device to the positioning part through the operation port, and the installation light barrier can work when the protective film curing device 100 works, thereby alarming or stopping when the staff passes through the operation port, and the safety of the staff is ensured.

[0067] In some embodiments, the pressing film 21 comprises a TPU (Thermoplastic polyurethanes, thermoplastic polyurethane elastomer rubber) film. Thus, the pressing film 21 has a certain ductility, which further ensures the close fit of the pressing film 21 and the arc edge of the protective film during the pressing process of the pressing film 21, and further ensures the yield rate of the electronic device.

[0068] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0069] In addition, the terms "first", "second" are only for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0070] In the present application, unless specifically defined otherwise, the terms "mount", "connected", "connecting", "fixed", "unfixed", and the like should be construed broadly and can include fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or communication connections between each other; direct connections, or indirect connections via an intermediate medium; or internal communication between two elements or interaction between two elements. The specific meanings of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.

[0071] In the present application, unless specifically defined otherwise, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features via an intermediate medium. Moreover, the first feature "above", "over", and "on" the second feature can be directly above or obliquely above the second feature, or simply indicate that the first feature is higher than the second feature in horizontal height. The first feature "below", "under", and "under" the second feature can be directly below or obliquely below the second feature, or simply indicate that the first feature is lower than the second feature in horizontal height.

[0072] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0073] Although the above embodiments have been shown and described, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Changes, modifications, replacements, and variations of the above embodiments made by those skilled in the art are within the scope of the present application.

Claims

1. A protective film curing apparatus characterized by comprising: The protective film curing device comprises: a bottom mold having a positioning part for positioning an electronic device and protruding a curved screen of the electronic device out of the bottom mold; and a pressing assembly movably connected with the bottom mold to facilitate approaching and moving away from the positioning part, the pressing assembly comprising a pressing film opposite to the positioning part and a side pressing assembly drivenly connected with the pressing film to press a protective film between the pressing film and the curved screen; the pressing film has a first end and a second end opposite in left-right direction, the first end and / or the second end of the pressing film is rollably connected with the side pressing assembly, and the left-right direction is perpendicular to the length direction of the arc edge of the protective film.

2. The protective film curing device according to claim 1, wherein The protective film curing device further comprises an irradiation curing device matched with the positioning part to irradiate the arc edge of the protective film.

3. The protective film curing apparatus according to claim 1, wherein The side pressing assembly is movably connected with the bottom mold in left-right direction and / or up-down direction, and the left-right direction is perpendicular to the length direction of the arc edge of the protective film.

4. The protective film curing apparatus according to claim 1, wherein The protective film curing device further comprises a base, the bottom mold is pivotally connected with the base, and the pivot axis of the bottom mold extends in front-back direction, and the front-back direction is consistent with the length direction of the arc edge of the protective film.

5. The protective film curing apparatus according to claim 1, wherein The side pressing assembly comprises a pressing frame, two air cylinders and two pressing members, the two air cylinders are installed on the pressing frame, the two air cylinders are spaced apart in left-right direction, the left-right direction is perpendicular to the length direction of the arc edge of the protective film, the two air cylinders are respectively located on both sides of the positioning part, the pressing members are in one-to-one correspondence with the air cylinders, the pressing members are connected with the pistons of the corresponding air cylinders, and the two pressing members are respectively connected with the two ends of the pressing film.

6. The protective film curing apparatus according to claim 5, wherein The side pressing assembly further comprises an adjusting assembly connecting the pistons and the pressing members, the adjusting assembly comprises a fixing member in one-to-one correspondence with the air cylinders, a guide column and a spring, the fixing member is connected with the piston of the corresponding air cylinder, the guide column is slidably connected with the fixing member, the lower end of the guide column is connected with the pressing member, and the spring is sleeved on the guide column and located between the fixing member and the pressing member.

7. The protective film curing apparatus of claim 5, wherein The end of the piston connected with the pressing member is inclined towards the direction close to the positioning part.

8. The protective film curing apparatus of claim 5, wherein The pressing assembly further comprises a middle pressing member installed on the pressing frame and located between the two air cylinders, and the middle pressing member is opposite to the positioning part to press the front surface of the protective film.

9. The protective film curing apparatus according to claim 8, wherein The positioning part comprises a positioning groove arranged on the top surface of the bottom mold, the positioning groove has a first side edge opposite to the arc edge of the curved screen, the top surface of the bottom mold is provided with an elastic supporting block opposite to the middle pressing member, the elastic supporting block is located on one side of the positioning groove along the length direction of the first side edge, and the top surface of the elastic supporting block is higher than the front surface of the protective film.

10. The protective film curing apparatus according to claim 9, wherein The positioning groove further has a second side connecting the two first sides, and the elastic supporting blocks are divided into two groups, which are arranged on two sides of the positioning groove along the length direction of the first side, and each group of the elastic supporting blocks comprises at least two elastic supporting blocks arranged at intervals along the length direction of the second side.

11. The protective film curing apparatus of claim 5, wherein The protective film curing device further comprises: A casing having a curing cavity; A rack located in the curing cavity, the pressing frame being slidably connected with the rack; and A driving device installed on the rack and drivingly connected with the pressing frame.

12. The protective film curing apparatus according to claim 11, wherein An operation port is arranged on the casing, and a safety grating is arranged on the casing and adjacent to the operation port.

13. The protective film curing apparatus of claim 1, wherein The pressing film comprises a TPU film.

Citation Information

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