Film assembly and film pasting device

Abstract

The invention relates to a film assembly and a film pasting device.The film assembly comprises a dust removal film, a tempered film and a release film which are attached layer by layer, the dust removal film comprises a stripping layer and a traction layer which are stacked, the stripping layer is attached to the side, back to the release film, of the tempered film, and the traction layer is arranged on the side, back to the tempered film, of the stripping layer; a crease is formed between the traction layer and one end of the stripping layer; one end of the release film is provided with a fixing part, the fixing part extends out of the edge, close to the position of the crease, of the tempered film, the side, facing the tempered film, of the fixing part is provided with an elastic pressing piece, the elastic pressing piece is provided with a fixed end and a free end, the fixed end is connected to the fixing part, and the free end abuts against the side, back to the stripping layer, of the traction layer; and the elastic pressing sheet is hung on the part of the dust removal film at the crease position. When the film assembly is used for pasting the film on the electronic equipment until the stripping layer is separated from the tempered film, the free end is hung on the edge of the side, back on to the release film, of the tempered film. The AB glue of the tempered film is not easy to crack, and the AB glue of the tempered film can be exhausted from bottom to top in sequence.

Description

Technical Field

[0001] The invention relates to the technical field of film pasting for electronic equipment, and in particular to a film assembly and a film pasting device. Background Art

[0002] Tempered film has the property of self-adhesion. This self-adhesion property is mainly reflected in that when a part of the tempered film is bonded to the screen of an electronic device, even without applying external force, the tempered film will continue to expand outward due to the stress of its own material and gravity until the tempered film and the screen of the electronic device are completely bonded.

[0003] When using tempered film to apply the film, it is usually necessary to align one end of the tempered film with the edge of one end of the electronic device screen, and then attach and stick the tempered film at that end to the end of the electronic device screen, and then release the tempered film. Under the effect of the tempered film's own weight and self-adhesive properties, the tempered film gradually adheres to the other end along the already attached end. During this bonding process, the air is automatically discharged to the area that has not been attached until the entire tempered film is completely attached to the electronic device screen. This film application method is difficult to complete manually with the naked eye, so auxiliary film application tools are generally used. For example, patent CN205554723U discloses a screen film applicator, patent CN218463959U discloses a film applicator with an exhaust chute and dust removal, and patent CN219029898U discloses a film applicator with a built-in tempered film and an exhaust chute and dust removal. In particular, the solutions recorded in patents CN205554723U and CN219029898U also disclose a dust removal film that is bonded to a tempered film, which realizes the function of removing dust from the mobile phone screen while the film is being applied. After the dust removal film is pulled out, the tempered film will gradually adhere to the mobile phone screen by relying on static electricity and the self-adhesive properties of the tempered film. However, during the self-adhesive adhesion process, the bubbles between the tempered film and the mobile phone screen gather from both ends of the mobile phone screen to the middle and are discharged from the edges, causing some bubbles to remain, resulting in poor film application. Based on this, in order to reduce the generation of bubbles during the film application process, this application will provide an improved film assembly. Summary of the invention

[0004] The present invention provides a film assembly and a film sticking device to solve the problem of bubbles generated during film sticking.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] In a first aspect of the present invention, the present invention provides a film assembly, comprising a dust removal film, a tempered film and a release film laminated layer by layer, the dust removal film comprising a peeling layer and a traction layer stacked on each other, the peeling layer being laminated to a side of the tempered film facing away from the release film, the traction layer being arranged on a side of the peeling layer facing away from the tempered film, and the traction layer and one end of the peeling layer forming a fold; a fixing portion is provided at one end of the release film, the fixing portion extends out from an edge of the tempered film close to the fold, the fixing portion is provided with an elastic pressing sheet facing the tempered film, and the elastic pressing sheet has a fixed The fixed end is connected to the fixed part, the free end is pressed against the side of the traction layer facing away from the peeling layer, and the elastic pressing piece is hooked to the part of the dust removal film located at the crease; wherein, when the film assembly is used for film pasting of electronic equipment, the screen of the electronic equipment is against the traction layer, the traction layer is pulled to make the peeling layer turn outward from the crease, so that the peeling layer moves from one end of the screen of the electronic equipment to the other end toward one side of the tempered film, until the peeling layer is separated from the tempered film, and the free end is hooked to the edge of one side of the tempered film facing away from the release film.

[0007] In one embodiment, the fixing portion and the release film are an integrally formed structure, the fixing portion is provided with a wire groove penetrating the fixing portion along the thickness direction of the fixing portion, and a portion of the fixing portion located in the area enclosed by the wire groove forms the elastic pressing sheet.

[0008] In one embodiment, the wire groove includes a first groove, a second groove and a third groove connected in sequence, the length extension direction of the second groove is parallel to the width direction of the tempered film, the first groove and the third groove are symmetrically arranged at both ends of the second groove and extend back to the tempered film, and the first groove and the third groove are respectively arranged at an angle with the second groove.

[0009] In one of the embodiments, a black frame area is provided at the edge of the tempered film, and after the peeling layer is separated from the tempered film, the free end is hooked to the black frame area.

[0010] In one of the embodiments, a mesh plate is extended from the black frame area to the middle area of ​​the tempered film, and the free end is hung on the area where the mesh plate is located.

[0011] In one of the embodiments, one end of the dust removal film is provided with two lugs whose width is smaller than that of the peeling layer and the traction layer, and the lugs extend out of the edge of the tempered film, and the relatively far ends of the two lugs are respectively connected to the peeling layer and the traction layer, and the other relatively close ends of the two lugs are connected to each other and form the fold at the connection position.

[0012] In one of the embodiments, one of the lugs and the peeling layer is an integrally formed structure, and the other lug is bonded to the traction layer.

[0013] In one of the embodiments, the fixing portion is provided with two positioning holes penetrating the fixing portion along the thickness direction of the fixing portion, the two positioning holes are arranged along the width direction of the tempered film, and the two positioning holes are located on both sides of the elastic pressing plate.

[0014] In one of the embodiments, at least one parameter of the shape and size of the two positioning holes is different.

[0015] In a second aspect, the present invention provides a film sticking device, comprising:

[0016] A main body, comprising an outer surface and an inner surface, wherein the main body is provided with a receiving space on one side of the inner surface;

[0017] The membrane assembly mentioned above is installed in the receiving space.

[0018] It can be seen from the above technical solutions that the embodiments of the present invention have at least the following advantages and positive effects:

[0019] Before the film assembly of the embodiment of the present invention is used for film application, the free end of the elastic pressing sheet presses against the side of the traction layer facing away from the peeling layer, and the elastic pressing sheet hangs on the part of the dust removal film located at the crease position, so that the peeling layer will not easily separate from the tempered film, and the AB glue of the tempered film will not easily crack, thereby improving the film application effect of the tempered film. In addition, when the film assembly is used for film application of electronic devices, especially after the peeling layer separates from the tempered film, the free end is hung on the edge of the side of the tempered film facing away from the release film, thereby raising the upper position of the tempered film, so that the AB glue of the tempered film can be exhausted sequentially from bottom to top, thereby solving the problem of the tempered film AB glue adsorbing the electronic device screen at the upper and lower ends at the same time and exhausting toward the middle, causing trapped air and bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a film sticking device according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 The exploded structural diagram of the film sticking device shown;

[0023] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the membrane assembly shown;

[0024] Figure 4 for Figure 2 A schematic diagram of a partially enlarged structure of a membrane assembly shown;

[0025] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 6 for Figure 2 A partial cross-sectional enlarged structural schematic diagram of the membrane assembly shown.

[0027] The following are the descriptions of the reference numerals:

[0028] 1-film sticking device; 100-main body; 101-receiving space; 110-outer surface; 120-inner surface; 130-frame; 140-positioning protrusion; 200-film assembly; 210-dust removal film; 211-peeling layer; 212-traction layer; 213-crease; 214-lug; 220-tempered film; 230-release film; 231-fixing part; 232-elastic pressing sheet; 233-fixed end; 234-free end; 235-wire slot; 2351-first slot; 2352-second slot; 2353-third slot; 236-positioning hole. DETAILED DESCRIPTION

[0029] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] See also Figures 1 to 6 The present invention provides a film sticking device 10, including a main body 100 and a film assembly 200. The main body 100 can be made of materials such as plastic, metal, and ceramic. The main body 100 includes an outer surface 110 and an inner surface 120 that are relatively arranged. The relative arrangement direction can be understood as the thickness direction of the main body 100. The main body 100 is provided with a receiving space 101 on the side where the inner surface 120 is located. In this embodiment, the inner surface 120 is provided with a frame 130 connected to the main body 100. After the frame 130 is connected to the main body 100, the receiving space 101 is enclosed. It can be understood that the receiving space 101 can also be formed in other ways. For example, a concave groove can be provided on the inner surface 110 to form the receiving space 101.

[0033] The receiving space 101 is used to receive electronic devices so as to apply a film to the screen of the electronic devices. It should be noted that the electronic devices may be smart terminals with screens such as smart phones and tablet computers.

[0034] The film assembly 200 is installed in the receiving space 101. The film assembly 200 includes a dust removal film 210, a tempered film 220 and a release film 230 which are laminated layer by layer. When the film assembly 200 is installed in the receiving space 101, the release film 230 should be installed toward the receiving space 101. After installation, the dust removal film 210 faces the outside so that the dust removal film 210 is attached to the screen of the electronic device when the film is attached. The dust removal film 210 includes a peeling layer 211 and a traction layer 212 which are stacked on each other. The peeling layer 211 is laminated to the side of the tempered film 220 which is away from the release film 230. The traction layer 212 is arranged on the side of the peeling layer 211 which is away from the tempered film 220. The traction layer 212 forms a fold 213 with one end of the peeling layer 211. A fixing portion 231 is provided at one end of the release film 230, and the fixing portion 231 extends out from the edge of the tempered film 220 near the fold 213. An elastic pressing sheet 232 is provided on the side of the fixing portion 231 facing the tempered film 220. The elastic pressing sheet 232 has a fixed end 233 and a free end 234. The fixed end 233 is connected to the fixing portion 231, and the free end 234 is pressed against the side of the traction layer 212 facing away from the peeling layer 211. The elastic pressing sheet 232 is hooked to the portion of the dust removal film 210 located at the fold 213. Among them, when the film assembly 200 is used to apply film to an electronic device, the screen of the electronic device is against the traction layer 212, and the traction layer 212 is pulled to make the peeling layer 211 turn outward from the crease 213, so that the peeling layer 211 moves from one end of the screen of the electronic device to the other end toward the side of the tempered film 220 until the peeling layer 211 is separated from the tempered film 220. At this time, the free end 234 is hung on the edge of the side of the tempered film 220 facing away from the release film 230.

[0035] Before the film assembly 200 of the embodiment of the present invention is used for film application, the free end 234 of the elastic pressing sheet 232 is pressed against the side of the traction layer 212 facing away from the peeling layer 211, and the elastic pressing sheet 232 is hooked to the part of the dust removal film 210 located at the fold 213, so that the peeling layer 211 will not easily separate from the tempered film 220, and the AB glue of the tempered film 220 will not easily crack, thereby improving the film application effect of the tempered film 220. In addition, when the film assembly 200 is used for film application of electronic equipment, especially after the peeling layer 211 separates from the tempered film 220, the free end 234 is hooked to the edge of the side of the tempered film 220 facing away from the release film 230, thereby raising the upper position of the tempered film 220, so that the AB glue of the tempered film 220 can be exhausted sequentially from bottom to top, thereby solving the problem that the AB glue of the tempered film 220 simultaneously adsorbs the electronic device screen and exhausts toward the middle, resulting in trapped air and bubbles. That is, the solution of the present invention can reduce or even eliminate the generation of bubbles when applying the film.

[0036] In one embodiment, the fixing portion 231 and the release film 230 are integrally formed. The fixing portion 231 is provided with a wire groove 235 penetrating the fixing portion 231 along the thickness direction of the fixing portion 231. The portion of the fixing portion 231 located in the area surrounded by the wire groove 235 forms an elastic pressing piece 232. With such a configuration, in order to obtain the elastic pressing piece 232, it is only necessary to open a wire groove on the fixing portion 231 and the release film 230 integrally formed by injection molding. There is no need to form the elastic pressing piece 232, and the subsequent installation process is also omitted, thereby greatly reducing the production cost. Figure 4 The wire groove 235 is shown to include a first groove 2351, a second groove 2352 and a third groove 2353 connected in sequence, the length extension direction of the second groove 2352 is parallel to the width direction of the tempered film 220, the first groove 2351 and the third groove 2353 are symmetrically arranged at both ends of the second groove 2352 and extend away from the tempered film 220, and the first groove 2351 and the third groove 2353 are respectively arranged at an angle to the second groove 2352. Of course, in other embodiments, the wire groove 235 can also be in other forms, for example, the wire groove 235 can also be a straight groove, for example, the wire groove 235 can only include the second groove 2352, and the position of the straight groove can also be understood as the aforementioned elastic pressing sheet 232, and when hanging, the fold 213 directly extends into the straight groove.

[0037] It should be noted that in addition to being formed by opening a groove, the elastic pressing piece 232 can also be formed by setting a spring sheet on the fixed part 231. At this time, the fixed part 231 should have good hardness and rigidity, so the fixed part 231 can be made of a plate spliced ​​with the release film 230.

[0038] In one embodiment, a black frame area is provided at the edge of the tempered film 220, and after the peeling layer 211 is separated from the tempered film 220, the free end 234 is hooked on the black frame area. On the one hand, the tempered film 220 with a black frame area can effectively improve the strength of the tempered film. On the other hand, since the free end 234 is not hooked on the inner area of ​​the tempered film 220 but on the black frame area, the film will not damage the screen. Furthermore, a mesh plate extends from the middle area of ​​the black frame area back to the tempered film 220, and the free end is hooked on the area where the mesh plate is located. The mesh plate is used to cover the array of earpiece holes on the front side of the screen for electronic devices with an earpiece on the screen side.

[0039] In one embodiment, two lugs 214 with a width smaller than that of the peeling layer 211 and the traction layer 212 are provided at one end of the dust removal film 210. The lugs 214 extend out of the edge of the tempered film 220. The relatively far ends of the two lugs 214 are respectively connected to the peeling layer 211 and the traction layer 212. The other relatively close ends of the two lugs 214 are connected to each other and form a fold 213 at the connection position. The provision of the two lugs 214 can increase the hanging area of ​​the elastic pressing sheet 232. If there are no two lugs 214, in order to prevent the elastic pressing sheet 232 from extending into the inner area of ​​the tempered film 220, the elastic pressing sheet 232 may be designed to be very short, only matching the width of the black frame area, and the dust removal film 210 cannot be hung, or it is easy to fall off.

[0040] In one embodiment, one lug 214 is integrally formed with the peeling layer 211, and the other lug 214 is bonded to the traction layer 212. The above design is only for the convenience of splicing the peeling layer 211 and the traction layer 212. In other embodiments, the peeling layer 211 and the traction layer 212 may also be designed as an integrally formed structure, in which case it is sufficient to form a fold 213 in the middle of the dust removal film 210.

[0041] In one embodiment, the fixing portion 231 is provided with two positioning holes 236 that penetrate the fixing portion 231 along the thickness direction of the fixing portion 231, and the two positioning holes 236 are arranged along the width direction of the tempered film 220, and the two positioning holes 236 are located on both sides of the elastic pressing plate 232. The two positioning holes 236 are used to match the two positioning protrusions 140 provided on the main body 100, so as to facilitate the fixing of the release film 230 when the film is applied. It should be understood that in other embodiments, other methods can also be used to fix the release film 230, for example, the method disclosed in patent CN218463959U of using an adhesive to fix the release film through a window can be referred to. Further, at least one parameter in the shape and size of the two positioning holes 236 can be designed to be different. In this way, the user will not put the film assembly 200 upside down when installing it into the receiving space 101 during the film application process.

[0042] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A membrane module, characterized in that: The invention comprises a dust removal film, a tempered film and a release film which are laminated layer by layer, wherein the dust removal film comprises a peeling layer and a traction layer which are laminated on each other, wherein the peeling layer is laminated on a side of the tempered film which faces away from the release film, and the traction layer is arranged on a side of the peeling layer which faces away from the tempered film, and a fold is formed between the traction layer and one end of the peeling layer; a fixing portion is arranged at one end of the release film, and the fixing portion extends out from an edge of the tempered film close to the fold; an elastic pressing sheet is arranged on a side of the fixing portion which faces the tempered film, and the elastic pressing sheet has a fixed end and a free end, and the fixed end The free end is connected to the fixing portion, and is pressed against a side of the traction layer facing away from the peeling layer, and the elastic pressing piece is hooked to a portion of the dust removal film located at the crease position; wherein, when the film assembly is used to apply a film to an electronic device, the screen of the electronic device is pressed against the traction layer, and the traction layer is pulled to turn the peeling layer outward from the crease, so that the peeling layer moves from one end of the screen of the electronic device to the other end toward one side of the tempered film, until the peeling layer is separated from the tempered film, and the free end is hooked to an edge of a side of the tempered film facing away from the release film.

2. The membrane module according to claim 1, characterized in that The fixing part and the release film are an integrally formed structure. The fixing part is provided with a wire groove penetrating the fixing part along the thickness direction of the fixing part. The part of the fixing part located in the area surrounded by the wire groove forms the elastic pressing sheet.

3. The membrane module according to claim 2, characterized in that The wire groove includes a first groove, a second groove and a third groove connected in sequence, the length extension direction of the second groove is parallel to the width direction of the tempered film, the first groove and the third groove are symmetrically arranged at both ends of the second groove and extend back to the tempered film, and the first groove and the third groove are respectively arranged at an angle with the second groove.

4. The membrane module according to claim 1, characterized in that A black frame area is provided at the edge of the tempered film, and after the peeling layer is separated from the tempered film, the free end is hooked on the black frame area.

5. The membrane module according to claim 4, characterized in that The black frame area extends a mesh plate from the middle area of ​​the tempered film, and the free end is hung on the area where the mesh plate is located.

6. The membrane module according to claim 1, characterized in that One end of the dust removal film is provided with two lugs with a width smaller than that of the peeling layer and the traction layer, and the lugs extend out of the edge of the tempered film. The relatively distant ends of the two lugs are respectively connected to the peeling layer and the traction layer, and the other relatively close ends of the two lugs are connected to each other and form the fold at the connection position.

7. The membrane module according to claim 6, characterized in that One of the lugs is an integrally formed structure with the peeling layer, and the other lug is bonded to the traction layer.

8. The membrane module according to claim 6, characterized in that The fixing portion is provided with two positioning holes penetrating the fixing portion along the thickness direction of the fixing portion, the two positioning holes are arranged along the width direction of the tempered film, and the two positioning holes are located on both sides of the elastic pressing sheet.

9. The membrane module according to claim 8, characterized in that At least one parameter of the shape and size of the two positioning holes is different.

10. A film sticking device, characterized in that: include: A main body, comprising an outer surface and an inner surface, wherein the main body is provided with a receiving space on one side of the inner surface; The membrane assembly according to any one of claims 1 to 9, mounted in the accommodation space.

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