A film pasting device for curved substrates

Abstract

The application discloses a film pasting device for curved surface substrates and relates to the field of jigs, which comprises an upper hydraulic press, the bottom end of the upper hydraulic press is fixedly connected with an upper cavity, a lower cavity is arranged below the upper cavity, the bottom end of the lower cavity is connected with a lower hydraulic press, the bottom end of the film material is provided with a support jig lower assembly, a substrate and a support jig upper assembly. When various film pasting operations are carried out on the surface of a curved surface substrate with large curvature, the body of the substrate can be wrapped by the film material; the jig is designed to be combined in a jig bearing area and a jig inclined side wall, so that jigs of different specifications can be matched with each other by simple combination, and the jigs can also be processed separately, thereby saving jig materials and processing costs; the whole surface of the substrate is designed to be supported, so that the substrate can not be deformed or cause film creases or film wrinkles and other product quality problems caused by deformation of the substrate during the film pasting process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film pasting, in particular to a film pasting device for curved substrates. BACKGROUND

[0002] The rapid development of the information age makes electronic display screens ubiquitous in life, especially the emergence of touch screens of electronic products such as computer display screens, tablet computers, mobile phones, etc. A product that can protect the screen without affecting the display effect and touch effect is needed. Therefore, a screen protection film is invented. The transparent silicone layer of the film body is pasted on the screen, which not only does not affect the display effect, but also can achieve the functions of scratch prevention, anti-glare, anti-peep, oil stain prevention, fingerprint prevention, etc. to protect the screen or achieve special display effect. In recent years, electronic display screens have developed from flat to curved, making the difficulty of film pasting greater and the process more complex. Therefore, a film pasting jig is needed to assist in film pasting.

[0003] The existing thermoforming film pasting jig design, such as the film pasting on the surface of large-curvature electronic products such as VR glasses glass shell and PC plastic VR glasses shell, generally takes the body position as the support force point on the jig without avoiding the design of the substrate body position and the design of the jig side wall slope to reduce the film material extension. The film material cannot be wrapped around the body position of the substrate during the film pasting process and is prone to breakage due to excessive thinness of the film material extension.

[0004] Therefore, a new film pasting device for curved substrates is provided to solve the above problems. SUMMARY

[0005] The purpose of the present application is to solve the problem that the existing jig does not avoid the design of the substrate body position and the design of the jig side wall slope to reduce the film material extension, which results in the film material being unable to wrap around the body position of the substrate and being prone to breakage due to excessive thinness of the film material extension. A film pasting device for curved substrates is provided.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a film pasting device for curved substrates, comprising an upper hydraulic machine, the bottom end of the upper hydraulic machine is fixedly connected with an upper cavity, the inner wall of the upper cavity is fixedly connected with a film material heating pipe, a lower cavity is arranged below the upper cavity, a film covering plate is placed at the top end of the lower cavity, a lower hydraulic machine is slidably connected to the bottom end of the lower cavity, and a square plate is fixedly connected to the top end. The above-mentioned device is used to attach the film material to the upper surface of the substrate. During film pasting, the film material is attached to the top end of the film covering plate; the square plate is used to place the substrate supported by the upper assembly and the lower assembly of the support jig.

[0007] As a further further scheme of the present application, the top end of the upper hydraulic machine is connected with the bottom end of the lower hydraulic machine with a controller, which is used to control the start and stop of the upper hydraulic machine and the lower hydraulic machine respectively.

[0008] As a further further scheme of the present application, the film material heating pipe is provided with a plurality of pipes, which are equidistantly distributed on the inner wall of the upper cavity.

[0009] As a further further scheme of the present application, the bottom end surface of the upper cavity is matched in size with the top end surface of the lower cavity.

[0010] As a further further scheme of the present application, the bottom end of the upper cavity and the top end of the lower cavity are provided with square holes of corresponding positions and same sizes, the square plate is matched in contour size with the square hole, the square hole allows the square plate to pass through, and the support jig upper assembly, the support jig lower assembly and the substrate are placed in the position in the middle of the top end of the square plate.

[0011] As a further further scheme of the present application, the bottom end of the lower cavity is provided with a circular hole for the top end of the lower hydraulic machine to pass through.

[0012] As a further further scheme of the present application, the top end of the support jig upper assembly is matched in shape and size with the substrate, and the length and width of the film material are greater than the length and width of the substrate respectively.

[0013] As a further further scheme of the present application, the support jig lower assembly and the support jig upper assembly are designed in a split type combination, and the support jig lower assembly and the support jig upper assembly have a combination gap therebetween.

[0014] As a further further scheme of the present application, the support jig upper assembly is detachably inserted into the support jig lower assembly, and the support jig lower assembly is located below the support jig upper assembly.

[0015] As a further further scheme of the present application, the side wall of the support jig lower assembly surrounds the outside of the side wall of the support jig upper assembly, and the side wall of the support jig lower assembly and the side wall of the support jig upper assembly form the gap therebetween.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The present application can wrap the substrate with the film material when carrying out various film pasting operations on the surface of the substrate with large curvature, and can ensure the film pasting effect; the tool is designed to be combined in a tool bearing area and a tool slope side wall, so that tools of different specifications can be matched and used by simple combination, and the tool can be processed individually, thereby saving tool material and processing cost; the whole surface of the substrate is designed to be supported, so that the substrate will not deform or cause film creases or film wrinkles during the film pasting process. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only a part of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings:

[0019] Fig. 1 It is a structural schematic diagram of the present application;

[0020] Fig. 2 It is an internal sectional view of two cavities of the present application;

[0021] Fig. 3 It is a schematic diagram of the relative positions of the tool combination, the substrate and the film material during the film pasting process of the present application.

[0022] In the figure: 1, upper hydraulic machine; 2, film material heating pipe; 3, upper cavity; 4, support tool lower combination; 5, film coating plate; 6, lower cavity; 7, lower hydraulic machine; 8, substrate; 9, film material; 10, support tool upper combination; 11, square plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] Please refer to Figs. 1-3In the embodiment of the present application, a film pasting device for curved substrates comprises an upper hydraulic press 1, the bottom end of the upper hydraulic press 1 is fixedly connected with an upper cavity 3, the inner wall of the upper cavity 3 is fixedly connected with a film material heating pipe 2, the lower side of the upper cavity 3 is provided with a lower cavity 6, the top end of the lower cavity 6 is placed with a film covering plate 5, the bottom end of the lower cavity 6 is slidably connected with a lower hydraulic press 7, the top end of the lower hydraulic press 7 is fixedly connected with a square plate 11, the film pasting device is used to paste a film material 9 on the upper surface of a substrate 8, when pasting the film, the film material 9 is pasted on the top end of the film covering plate 5, the square plate is used to place the substrate supported by the upper support jig assembly and the lower support jig assembly.

[0025] In the embodiment, when the film pasting device is used, the lower support jig assembly 10 and the upper support jig assembly 4 are combined and placed on the square plate 11, there is a gap between the lower support jig assembly 10 and the upper support jig assembly 4 after the combination, then the substrate 8 is placed above the upper support jig assembly 4, then the lower hydraulic press 7 is controlled to drive the square plate 11 to descend, after descending to the position, the height of the substrate 8 is lower than the top surface of the film covering plate 5, then the film material 9 is pasted on the film covering plate 5, then the upper hydraulic press 1 is driven to descend to close the upper cavity 3 and the lower cavity 6, after the closing is completed, the two cavities (the upper cavity 3 and the lower cavity 6) are vacuumized, because there is the film material 9 between the two cavities (the upper cavity 3 and the lower cavity 6), the two cavities are divided into two completely independent cavities, when the vacuum degree of the upper cavity 3 and the lower cavity 6 reaches the vacuum setting value, the film material heating pipe 2 is started to heat, the film material 9 is heated and reaches the film pasting setting temperature, then the lower hydraulic press 7 drives the two jig assembly (the upper support jig assembly 4 and the lower support jig assembly 10) and the substrate 8 above the square plate 11 to ascend at a constant speed to the film pasting setting position height, then the upper cavity 3 is opened to air pressure, the upper cavity 3 and the lower cavity 6 form a pressure difference, at this time, the internal air pressure of the upper cavity 3 is higher than that of the lower cavity 6, the film material 9 is pasted on the substrate 8, in the film pasting process of the substrate 8 and the film material 9, when the film material 9 is pasted on the substrate 8, the position of the substrate 8 where the film material 9 is pasted starts to tear, the gas in the upper cavity 3 can be exhausted along the gap between the upper support jig assembly 4 and the lower support jig assembly 10, after the film pasting is completed, the lower cavity 6 is broken to vacuum and balanced with the upper cavity 3, then the film material heating pipe 2 is closed, the upper hydraulic press 1 is driven to ascend to open the upper cavity 3, thus the whole process of the film pasting action is completed.

[0026] Please pay attention to Fig. 1 The top end of the upper hydraulic press 1 and the bottom end of the lower hydraulic press 7 are connected with a controller, it should be understood that the controller is used to control the start and stop of the upper hydraulic press 1 and the lower hydraulic press 7 respectively, so as to realize the film pasting action.

[0027] In this embodiment: the controller connected with the two hydraulic machines (the upper hydraulic machine 1 and the lower hydraulic machine 7) is used to control the corresponding lifting operation of the two hydraulic machines (the upper hydraulic machine 1 and the lower hydraulic machine 7).

[0028] Please refer to Fig. 2 , the film heating pipe 2 is provided with several, and is equidistantly distributed on the inner wall of the upper cavity 3.

[0029] In this embodiment: the setting of the film heating pipe 2 can ensure uniform heating of the film 9.

[0030] Please refer to Figs. 1-2 , the bottom end surface of the upper cavity 3 and the top end surface of the lower cavity 6 are matched in size.

[0031] In this embodiment: the matching of the size of the end surfaces of the two cavities close to each other can ensure the airtightness when the two cavities are attached, thereby ensuring the effect of attaching the film.

[0032] Please refer to Fig. 2 , the bottom end of the upper cavity 3 and the top end of the lower cavity 6 are provided with square holes of corresponding positions and same sizes, and the contour size of the square plate 11 matches the contour size of the square hole.

[0033] In this embodiment: the size of the square hole matches the size of the square plate 11, the square hole allows the square plate 11 to pass through, of course, also allows the jig lower assembly 10, the supporting jig upper assembly 4, the base material 8 and the film 9 to pass through, so as to facilitate the smooth operation of the film attaching operation.

[0034] Please refer to Figs. 1-2 , the bottom end of the lower cavity 6 is provided with a circular hole for the top end of the lower hydraulic machine 7 to pass through, the top end of the lower hydraulic machine 7 passes through the circular hole and is connected with the bottom of the square plate 11, and during the film attaching process, the supporting jig upper assembly 4, the supporting jig lower assembly 10 and the base material 8 are placed in the middle position of the top end of the square plate 11.

[0035] In this embodiment: the lower hydraulic machine 7 can drive the square plate 11 to rise or fall, and then use the air pressure to attach the film 9 to the surface of the base material 8 placed on the square plate 11.

[0036] Please refer to Fig. 3 , the top end shape size of the supporting jig upper assembly 4 matches the shape size of the base material 8, and the length and width of the film 9 are much larger than the length and width of the base material 8.

[0037] In this embodiment: the top end shape size of the supporting jig upper assembly 4 matches the shape size of the base material 8, so that the supporting jig upper assembly can stably bear the base material 8, and the length and width of the film 9 being larger than the base material 8 can ensure that the film 9 completely covers the base material 8.

[0038] Please refer to Fig. 3 , the support jig lower assembly 10 is designed as a side wall slope.

[0039] In this embodiment: if the jig side wall is designed as vertical, the film material 9 will stretch along the jig side wall when pasting the film, and because there is no support design, the stretching amount of the film material 9 will increase, the film material 9 will appear thinning problem leading to film material 9 breakage, and the support jig lower assembly 10 is designed as a side wall slope, the film material 9 will stretch along the slope side wall design when pasting the film, the slope design will support the film material 9, thereby reducing the stretching amount of the film material 9 in the jig side wall area, so that the film material 9 will not appear breakage or excessive stretching and thinning problem when wrapping the body.

[0040] Please refer to Fig. 3 , the support jig lower assembly 10 and the support jig upper assembly 4 are designed as a split assembly, the support jig upper assembly 4 can be detachably inserted into the support jig lower assembly 10, and the support jig lower assembly 10 is located below the support jig upper assembly 4.

[0041] In this embodiment: the jig assembly is designed as a split type, which is convenient for jig processing, and can be adjusted according to the stretching characteristics of the film material 9, the support jig lower assembly 10 is designed as different slope angles for matching, which does not need to re-cut and process the support jig upper assembly 4 at the same time, and in the case that the size of the base material 8 changes little, the size of the support jig upper assembly 4 can be changed alone, without changing the support jig lower assembly 10, thereby achieving the effect of saving jig material and processing cost.

[0042] Please refer to Fig. 3 , the support jig lower assembly 10 and the support jig upper assembly 4 have a combination gap therebetween. The side wall of the support jig lower assembly 10 surrounds the outside of the side wall of the support jig upper assembly 4, and the side wall of the support jig lower assembly 10 and the side wall of the support jig upper assembly 4 form the gap therebetween.

[0043] In this embodiment: the gap between the jig assemblies can play an exhaust role for the film material 9, and the residual air will be exhausted into the combination gap between the jigs. This design not only can improve the bubble and crease problems in film pasting through exhaust, but most importantly, the exhaust role of the film material 9 when wrapping the body of the base material 8 will not be affected by the exhaust of the gas, thereby achieving the wrapping and tightening effect of the film material 9 on the body of the base material 8 when pasting the film.

[0044] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A film laminating device for a curved substrate, characterized in that: The invention comprises an upper hydraulic press (1), the bottom end of the upper hydraulic press (1) is fixedly connected to an upper cavity (3), the inner wall of the upper cavity (3) is fixedly connected to a film material heating tube (2), a lower cavity (6) is provided below the upper cavity (3), a film-covering plate (5) is placed on the top of the lower cavity (6), the bottom end of the lower cavity (6) is slidably connected to a lower hydraulic press (7), and the top of the lower hydraulic press (7) is fixedly connected to a square plate (11); the film-sticking device is used to stick the film material (9) to the upper surface of the substrate (8); when sticking the film, the film material (9) is stuck to the top of the film-covering plate (5); the square plate (11) is used to place the substrate (8) supported by the upper assembly (4) of the support jig and the lower assembly (10) of the support jig; The upper support jig assembly (4) and the lower support jig assembly (10) are of split assembly design, the lower support jig assembly (10) is located below the upper support jig assembly (4), and a combination gap is provided between the upper support jig assembly (4) and the lower support jig assembly (10); The side wall of the support jig lower assembly (10) surrounds the outer side of the side wall of the support jig upper assembly (4), and the gap is formed between the side wall of the support jig lower assembly (10) and the side wall of the support jig upper assembly (4); The shape and size of the top end of the support fixture assembly (4) matches the shape and size of the substrate (8); the length and width of the membrane material (9) are respectively greater than the length and width of the substrate (8); The supporting fixture lower assembly (10) is designed with a side wall slope.

2. The film laminating device for curved substrates according to claim 1, characterized in that: The top end of the upper hydraulic press (1) and the bottom end of the lower hydraulic press (7) are connected to a controller, and the controller is used to control the start and stop of the upper hydraulic press (1) and the lower hydraulic press (7) respectively.

3. The film laminating device for curved substrates according to claim 1, characterized in that: A plurality of the film material heating tubes (2) are provided and are evenly distributed on the inner wall of the upper cavity (3).

4. The film laminating device for curved substrates according to claim 1, characterized in that: The bottom end surface of the upper cavity (3) matches the top end surface of the lower cavity (6) in size.

5. The film laminating device for curved substrates according to claim 1, characterized in that: The bottom end of the upper cavity (3) and the top end of the lower cavity (6) are provided with square holes of corresponding positions and the same size. The outline size of the square plate (11) matches the outline size of the square hole, and the square hole allows the square plate (11) to pass through. The upper assembly (4) of the supporting jig, the lower assembly (10) of the supporting jig, and the substrate (8) are placed in the middle of the top end of the square plate (11).

6. The film laminating device for curved substrates according to claim 5, characterized in that: The bottom end of the lower cavity (6) is provided with a circular hole for the top end of the lower hydraulic press (7) to pass through.

7. The film laminating device for curved substrates according to claim 1, characterized in that: The upper support fixture assembly (4) is detachably plugged into the lower support fixture assembly (10).

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