Film pasting device

Abstract

The utility model provides a film pasting device, which relates to the technical field of film pasting, and comprises a frame body, a first side of the frame body is provided with a positioning cavity, a second side of the frame body is provided with a hollow part communicated with the positioning cavity, the hollow part is provided with a pressing shaft fixedly connected with the frame body, and the pressing shaft is used for bending a film assembly towards one side close to electronic equipment. The first positioning assembly and the second positioning assembly are arranged on the second side of the frame body, the pressing shaft is arranged on the hollowed-out part, after the film assembly is installed in place, due to the existence of the pressing shaft, the film assembly can be bent towards the side close to the electronic equipment, and the bent part is attached to a screen of the electronic equipment firstly in the film pasting process; under the elastic action of the protective film, the area where the film assembly is attached to the screen of the electronic equipment is gradually expanded from the middle to the two sides, finally film pasting is achieved, air between the film assembly and the screen of the electronic equipment is emptied in the process, bubbles are prevented, and therefore the film pasting effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of film application technology, and in particular to a film application device. Background Technology

[0002] With the continuous development and innovation of technology, electronic products have become an indispensable part of people's lives. To prevent scratches and cracks, people often apply a tempered glass screen protector to the screen of electronic products. Most existing screen protectors consist of a tempered glass film and a release liner. To achieve a better application result, a screen protector applicator is usually needed. The application process generally includes: cleaning the screen of fine dust, stains, fingerprints, and other contaminants before application; removing the release liner; and then attaching the tempered glass film to the screen. However, existing screen protector applicators typically start from one end of the tempered glass film, which easily leads to air bubbles and a poor application result. Utility Model Content

[0003] This invention provides a film-applying device to solve the problem of poor film-applying effect in the prior art.

[0004] This utility model provides a film-applying device for applying film to a membrane assembly. The membrane assembly includes a positioning film, a protective film, a dust-removing film, and a pull strip. The film-applying device includes:

[0005] The frame has a positioning cavity on its first side and a hollow portion communicating with the positioning cavity on its second side. The hollow portion has a pressure shaft fixedly connected to the frame, which is used to bend the membrane assembly toward the side closer to the electronic device. A first positioning component is provided at the first end of the second side of the frame for positioning and engaging with the first end of the positioning membrane. A second positioning component is provided at the second end of the second side of the frame for positioning and engaging with the second end of the positioning membrane.

[0006] According to an embodiment of the present invention, a film-applying device is provided, wherein the first positioning component includes at least one first positioning post, and the position of the first positioning post corresponds one-to-one with the position of the positioning hole at the first end of the positioning film.

[0007] According to an embodiment of the present invention, a film-applying device is provided, wherein the second positioning component includes at least one second positioning post, and the position of the second positioning post corresponds one-to-one with the position of the positioning hole at the second end of the positioning film.

[0008] According to an embodiment of the present invention, a film-applying device is provided, wherein a first limiting groove is provided at the first end of the second side of the frame, and a first positioning post is located in the first limiting groove, and the first limiting groove is used to limit the first end of the positioning film.

[0009] According to an embodiment of the present invention, a film-applying device is provided, wherein a second limiting groove is provided at the second end of the second side of the frame, and a second positioning post is located in the second limiting groove, and the second limiting groove is used to limit the second end of the positioning film.

[0010] According to an embodiment of the present invention, a film-applying device is provided, wherein the pressure shaft is arranged along the width direction of the frame, and the side of the pressure shaft facing the positioning cavity has a contact portion for abutting against the positioning film, and the distance between at least one of the bottom wall of the first limiting groove and the bottom wall of the second limiting groove and the plane where the contact portion is located is greater than or equal to 0.1 cm and less than or equal to 1.5 cm.

[0011] According to an embodiment of the present invention, a film-applying device is provided in which an elastic pressure strip is provided in the contact portion, and the elastic pressure strip extends along the length direction of the pressure shaft.

[0012] According to an embodiment of the present invention, a film-applying device is provided in which a third limiting groove is provided at the first end of the second side of the frame, the third limiting groove is located on the side of the first limiting groove near the pressure shaft, and a step is formed between the first limiting groove and the third limiting groove.

[0013] According to an embodiment of the present invention, a film-applying device is provided, wherein the sidewall of the positioning cavity is provided with a plurality of positioning protrusions at intervals.

[0014] According to an embodiment of the present invention, a film-applying device is provided in which the pressure shaft divides the hollow portion into two openings, and the width of both openings is greater than the width of the positioning film.

[0015] According to an embodiment of the present invention, a film-applying device is provided, wherein the pressure shaft is an elastic pressure shaft.

[0016] According to an embodiment of the present invention, a film-applying device is provided, wherein the frame is provided with strip-shaped holes for the dust removal film and the pull strip to pass through.

[0017] The film application device provided in this embodiment of the utility model sets the first positioning component and the second positioning component on the second side of the frame, and sets the pressure shaft in the hollow part. After the film component is installed in place, the presence of the pressure shaft will cause the film component to bend towards the side closer to the electronic device. During the film application process, the bent part first adheres to the screen of the electronic device. Under the elasticity of the protective film, the area where the film component adheres to the screen of the electronic device gradually expands from the middle to both sides, and finally the film is applied. During this process, the air between the film component and the screen of the electronic device is vented to prevent air bubbles from forming, thereby improving the film application effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is one of the three-dimensional structural schematic diagrams of the film-applying device provided in the embodiments of this utility model;

[0020] Figure 2 This is the second three-dimensional structural schematic diagram of the film-applying device provided in this embodiment of the utility model;

[0021] Figure 3 This is the third three-dimensional structural schematic diagram of the film-applying device provided in this embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the main structure of the film-applying device with film components installed according to an embodiment of the present invention;

[0023] Figure 5 It is along Figure 4 A schematic diagram of the side view section structure made by section line AA in the diagram;

[0024] Figure 6 This is an exploded structural diagram of the membrane module provided in an embodiment of the present invention.

[0025] Figure label:

[0026] 10. Frame; 11. Positioning cavity; 12. Pressure shaft; 13. First limiting groove; 14. Second limiting groove; 15. Groove; 16. Third limiting groove; 17. Positioning protrusion; 18. Opening; 19. Strip hole;

[0027] 20. First positioning component; 21. First positioning post;

[0028] 30. Second positioning component; 31. Second positioning post;

[0029] 40. Membrane module; 41. Positioning membrane; 42. Protective membrane; 43. Dust removal membrane; 44. Tie strip;

[0030] 50. Electronic equipment. Detailed Implementation

[0031] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0032] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0034] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] The following is combined with Figures 1-6 This invention describes a film-applying device according to an embodiment of the present invention.

[0037] like Figure 6 As shown, the film-applying device of this utility model is used for applying film to a membrane assembly. The membrane assembly 40 includes a positioning film 41, a protective film 42, a dust removal film 43, and a pull strip 44. The positioning film 41, the protective film 42, and the dust removal film 43 are applied sequentially, and the pull strip 44 is connected to one end of the dust removal film 43 or is integrally formed.

[0038] like Figure 1 and Figure 2 As shown, the film application device includes a frame 10. The first side of the frame 10 has a positioning cavity 11. The positioning cavity 11 is used to accommodate the electronic device 50 and to position the electronic device 50, preventing relative movement between the electronic device 50 and the frame 10 during the film application process, which could cause misalignment of the applied protective film 42. The size and shape of the positioning cavity 11 are adapted to the size and shape of the electronic device 50. The frame 10 is a rectangular frame; however, the specific shape of the frame 10 is not limited to this and is determined according to the shape of the electronic device 50.

[0039] The second side of the frame 10 is provided with a cutout portion communicating with the positioning cavity 11. The cutout portion is used to allow the positioning film 41 to extend from the positioning cavity 11 to the second side of the frame 10, thereby realizing the bending installation of the film assembly 40. The cutout portion is provided with a pressure shaft 12 fixedly connected to the frame 10. The pressure shaft 12 is used to bend the film assembly 40 towards the side closer to the electronic device 50. The first end of the second side of the frame 10 is provided with a first positioning component 20 for positioning and engaging with the first end of the positioning film 41. The second end of the second side of the frame 10 is provided with a second positioning component 30 for positioning and engaging with the second end of the positioning film 41. The positioning film 41 is positioned by the cooperation of the first positioning component 20 and the second positioning component 30 to prevent relative movement between the film assembly 40 and the frame 10 during the film application process, which would cause the applied protective film 42 to be misaligned.

[0040] Once the membrane assembly 40 is fixed in place, pull the pull bar 44 by hand. The pull bar 44 causes the dust removal membrane 43 to separate from the protective membrane 42 and move closer to the strip hole 19 along the gap between the protective membrane 42 and the electronic device 50. Finally, the dust removal membrane 43 and the pull bar 44 are pulled out of the positioning cavity 11 through the strip hole 19.

[0041] It should be noted that the electronic device 50 in this utility model can be a tablet computer, mobile phone, iPad or other electronic device.

[0042] The film application device provided in this embodiment of the utility model, by setting the first positioning component 20 and the second positioning component 30 on the second side of the frame 10, and setting the pressure shaft 12 in the hollow part, after the film component 40 is installed in place, due to the presence of the pressure shaft 12, the film component 40 will bend towards the side closer to the electronic device 50. During the film application process, the bent part first adheres to the screen of the electronic device. Under the elastic action of the protective film 42, the area where the film component 40 adheres to the screen of the electronic device gradually expands from the middle to both sides, and finally the film is applied. During this process, the air between the film component 40 and the screen of the electronic device is vented to prevent air bubbles from forming, thereby improving the film application effect.

[0043] In this embodiment of the invention, the frame 10 is made of plastic to reduce its weight. Of course, the frame 10 can also be made of aluminum alloy or other materials. The edges of the frame 10 are rounded to improve user comfort when using the film application device.

[0044] In an embodiment of this utility model, the frame 10 is provided with a strip hole 19 for the dust removal membrane 43 and the pull strip 44 to pass through, and the strip hole 19 extends along the width direction of the frame 10.

[0045] In embodiments of this utility model, such as Figure 3 As shown, the frame 10 includes two long sidewalls and two short sidewalls, which together form a positioning cavity 11. The two short sidewalls are referred to as the first short sidewall and the second short sidewall, respectively. The first short sidewall is located at the first end of the frame 10, and the second short sidewall is located at the second end of the frame 10. A strip-shaped hole 19 is located on the second short sidewall and extends along the width of the frame 10. The width of the strip-shaped hole 19 is greater than or equal to the width of the dust removal membrane 43, and the height of the strip-shaped hole 19 is greater than or equal to the thickness of the dust removal membrane 43, so that the dust removal membrane 43 can be pulled out of the positioning cavity by the pull strip 44 through the strip-shaped hole 19.

[0046] In an embodiment of this utility model, the first positioning component 20 is located on the first short frame. The first positioning component 20 includes at least one first positioning post 21. Specifically, in this embodiment, the first positioning component 20 includes two first positioning posts 21, which are arranged at intervals along the width direction of the frame 10. The interval arrangement of the two first positioning posts 21 prevents relative rotation between the positioning film 41 and the first positioning post 21 during positioning, thus preventing misalignment of the protective film 42. The first end of the positioning film 41 is provided with at least one positioning hole. The number of positioning holes at the first end of the positioning film 41 is the same as the number of first positioning posts 21, and the positions of the first positioning posts 21 correspond one-to-one with the positions of the positioning holes at the first end of the positioning film 41. In another embodiment, the first positioning component 20 includes one first positioning post 21. In this case, the first positioning post 21 is a strip-shaped positioning post, extending along the width direction of the frame 10. Using a strip-shaped positioning post also prevents relative rotation between the first positioning post 21 and the positioning hole at the first end of the positioning film 41 during positioning, improving the stability of the film assembly 40. Of course, the number of first positioning posts 21 is not limited to this; it can also be three, four, or more.

[0047] Furthermore, in order to prevent the membrane assembly 40 from rotating relative to the positioning hole at the first end of the positioning membrane 41 during the positioning and engagement process, the cross-sectional shape of the first positioning post 21 is the same as the shape of the positioning hole, and both are non-circular.

[0048] Furthermore, for membrane modules 40 of the same model, the shapes of the positioning holes on the positioning membrane 41 may differ due to different manufacturers. To accommodate the positioning holes of different positioning membranes 41, the first positioning post 21 is detachably connected to the frame 10. Specifically, the frame 10 is provided with insertion holes, the number of which is the same as the number of first positioning posts 21, and the first positioning posts 21 are inserted into the corresponding insertion holes. In use, by replacing the first positioning posts 21 with different cross-sectional shapes, membrane modules 40 from different manufacturers can be adapted. Of course, the detachable connection between the first positioning post 21 and the frame 10 is not limited to an insertion connection; it can also be a screw connection or other detachable connection methods.

[0049] In embodiments of this utility model, such as Figure 1As shown, the second positioning component 30 is located on the second short frame. The second positioning component 30 includes at least one second positioning post 31. Specifically, in this embodiment, the second positioning component 30 includes two second positioning posts 31, which are arranged at intervals along the width direction of the frame 10. The interval arrangement of the two second positioning posts 31 prevents relative rotation between the positioning film 41 and the second positioning posts 31, thus preventing misalignment of the protective film 42. The second end of the positioning film 41 is provided with at least one positioning hole. The number of positioning holes at the second end of the positioning film 41 is the same as the number of second positioning posts 31, and the positions of the second positioning posts 31 correspond one-to-one with the positions of the positioning holes at the second end of the positioning film 41. In another embodiment, the second positioning component 30 includes one second positioning post 31. In this case, the second positioning post 31 is a strip-shaped positioning post that extends along the width direction of the frame 10. Using a strip-shaped positioning post also prevents relative rotation between the second positioning post 31 and the positioning hole at the second end of the positioning film 41 during the positioning process, improving the stability of the film component 40. Of course, the number of first positioning posts 21 is not limited to this; it can also be three, four, or more.

[0050] Furthermore, in order to prevent the membrane assembly 40 from rotating relative to the positioning hole at the second end of the positioning membrane 41 during the positioning and fitting process, the cross-sectional shape of the second positioning post 31 is the same as the shape of the positioning hole, and both are non-circular.

[0051] Furthermore, to accommodate the positioning holes of different positioning membranes 41, the second positioning post 31 is detachably connected to the frame 10. Specifically, the frame 10 is provided with insertion holes, the number of which is the same as the number of second positioning posts 31, and the second positioning posts 31 are inserted into the corresponding insertion holes. In use, by replacing the second positioning posts 31 with different cross-sectional shapes, membrane modules 40 from different manufacturers can be adapted. Of course, the detachable connection between the second positioning post 31 and the frame 10 is not limited to an insertion connection; it can also be a screw connection or other detachable connection methods.

[0052] In an embodiment of this utility model, the first positioning component 20 includes two first positioning posts 21, and the second positioning component 30 includes two second positioning posts 31, wherein the cross-sectional shapes of the two first positioning posts 21 are different. During the installation of the membrane component 40, if the membrane component 40 is misplaced, the two positioning holes at the first end of the positioning membrane 41 cannot engage with the two first positioning posts 21 due to the different cross-sectional shapes of the two first positioning posts 21. Similarly, when the cross-sectional shapes of the two second positioning posts 31 are different, the two positioning holes at the second end of the positioning membrane 41 cannot engage with the two second positioning posts 31. Only after the membrane component 40 is accurately placed in position can the positioning posts engage with the corresponding positioning holes.

[0053] In an embodiment of this utility model, a first limiting groove 13 is provided at the first end of the second side of the frame 10, and a first positioning post 21 is located within the first limiting groove 13. Specifically, the first positioning post 21 is located on the bottom wall of the first limiting groove 13. The first limiting groove 13 is used to limit the first end of the positioning film 41 to prevent the positioning film 41 from moving along the width direction of the frame 10. By cooperating with the first limiting groove 13 and the first positioning post 21, the positioning film 41 can be limited from multiple directions, which can effectively prevent the positioning film 41 from moving and improve the stability of the film assembly 40 during the film application process.

[0054] In embodiments of this utility model, such as Figure 1 As shown, a second limiting groove 14 is provided at the second end of the second side of the frame 10, and a second positioning post 31 is located within the second limiting groove 14. Specifically, the second positioning post 31 is located on the bottom wall of the second limiting groove 14. The second limiting groove 14 is used to limit the second end of the positioning film 41 to prevent the positioning film 41 from moving along the width direction of the frame 10. By cooperating with the second limiting groove 14 and the second positioning post 31, the positioning film 41 can be limited from multiple directions, effectively preventing the positioning film 41 from moving and further improving the stability of the film assembly 40 during the film application process.

[0055] In an embodiment of this utility model, the pressure shaft 12 is arranged along the width direction of the frame 10. The side of the pressure shaft 12 facing the positioning cavity 11 has a contact portion for abutting against the positioning membrane 41. The contact portion is used to contact the membrane assembly 40, so that the membrane assembly 40 bends towards the side closer to the electronic device 50. The distance between at least one of the bottom walls of the first limiting groove 13 and the second limiting groove 14 and the plane where the contact portion is located is greater than or equal to 0.1 cm and less than or equal to 1.5 cm. It should be noted that when the contact portion is provided with an elastic pressure strip, the distance here refers to the distance between the side of the elastic pressure strip facing the electronic device and the bottom wall of the limiting groove being greater than or equal to 0.1 cm and less than or equal to 1.5 cm. The distance mentioned above determines the degree of bending of the membrane assembly 40. When the distance is greater than 1.5cm, the membrane assembly 40 will bend too much, causing the protective film 42 to separate from the dust removal film 43, resulting in dust in the air entering the protective film, or even causing the protective film to dry out, thus preventing normal film application. When the distance is less than 0.1cm, the protective film 42 will not be able to expel air well during the application process to the electronic device screen, resulting in poor film application effect.

[0056] In an embodiment of this invention, an elastic pressure strip is provided at the contact portion, extending along the length of the pressure shaft 12. The elastic pressure strip is made of sponge, rubber, silicone, or other flexible materials. By using the elastic pressure strip to contact the membrane assembly 40, wear on the membrane assembly 40 can be avoided.

[0057] In embodiments of this utility model, such as Figure 2 As shown, the contact portion is provided with a groove 15, and the elastic strip is embedded in the groove 15. In order to ensure good contact between the elastic strip and the membrane assembly 40, the elastic strip protrudes relative to the edge of the groove 15.

[0058] In an embodiment of this utility model, a third limiting groove 16 is provided at the first end of the second side of the frame 10. Specifically, the third limiting groove 16 is located on the first short frame. The third limiting groove 16 is located on the side of the first limiting groove 13 near the pressure shaft 12. The first limiting groove 13 and the third limiting groove 16 are connected, and a step is formed between the first limiting groove 13 and the third limiting groove 16. The third limiting groove 16 is used to limit the first end of the dust removal membrane 43. After the membrane assembly 40 is installed in place, the first end of the dust removal membrane 43 abuts against the third limiting groove 16. By limiting the dust removal membrane 43 through the third limiting groove 16, the stability of the membrane assembly 40 is further improved, and the protective film 42 is prevented from shifting during the film application process.

[0059] In an embodiment of this invention, the sidewall of the positioning cavity 11 is provided with a plurality of positioning protrusions 17 at intervals. After the electronic device 50 is inserted into the positioning cavity 11, the positioning protrusions 17 abut against the electronic device 50, so that there is a gap between the electronic device 50 and the inner wall of the positioning cavity 11, which facilitates the removal of the electronic device 50 after the film is applied.

[0060] In an embodiment of this invention, a flexible coating is provided on the surface of the positioning protrusion 17. Specifically, the flexible coating can be applied to the surface of the positioning protrusion 17. The flexible coating can prevent the positioning protrusion 17 from directly contacting the electronic device housing, thus avoiding scratches on the housing surface. The flexible coating is made of rubber or silicone.

[0061] In an embodiment of this utility model, the pressure shaft 12 divides the hollowed-out portion into two openings 18, the width of which is greater than the width of the positioning film 41, so as to facilitate the film assembly 40 to extend out of the positioning cavity 11 through the openings 18.

[0062] In embodiments of this utility model, such as Figure 4 and Figure 5 As shown, the pressure shaft 12 is connected to the middle of the long frame and is perpendicular to the long frame. The position of the pressure shaft 12 determines the bending position of the film assembly 40. By setting the pressure shaft 12 in the middle of the frame 10, the middle of the protective film 42 can be first bonded to the screen of the electronic device, and the area where the film assembly 40 is bonded to the screen of the electronic device gradually expands from the middle to both sides. Of course, the pressure shaft 12 can also not be perpendicular to the long frame; the pressure shaft 12 and the long frame can form an acute angle greater than 45°.

[0063] In this embodiment of the invention, the pressure shaft 12 is an elastic pressure shaft, meaning that the material of the pressure shaft 12 is elastic. After the pull strip 44 is pulled out, pressing the pressure shaft by hand makes the membrane assembly 40 easier to bend and more convenient to fit with the screen of the electronic device.

[0064] The following is combined with Figures 1 to 6 A specific embodiment of this utility model is described, such as... Figures 1 to 6 As shown, the film application device includes a frame 10, which is a rectangular frame made of plastic, with rounded corners. The first side of the frame 10 has a positioning cavity 11, which is rectangular and serves to accommodate and position the electronic device 50. The size and shape of the positioning cavity 11 are adapted to the size and shape of the electronic device 50.

[0065] The second side of the frame 10 has a hollow section communicating with the positioning cavity 11. A pressure shaft 12, fixedly connected to the frame 10, is provided in the hollow section. The pressure shaft 12 is used to bend the membrane assembly 40 towards the side closer to the electronic device 50. The frame 10 includes two long sidewalls and two short sidewalls, which cooperate to form the positioning cavity 11. The first short sidewall is located at the first end of the frame 10, and the second short sidewall is located at the second end of the frame 10. A strip-shaped hole 19 is located on the second short sidewall and extends along the length of the second short sidewall.

[0066] The pressure shaft 12 has a strip-shaped structure, with both ends integrally formed with two long frame edges. To improve the connection strength between the pressure shaft 12 and the long frame edges, the two ends of the pressure shaft 12 are widened. The pressure shaft 12 divides the hollowed-out portion into two openings 18. The two openings 18 have the same shape and size, and their widths are both greater than the width of the positioning film 41. The two openings 18 are symmetrically arranged about the pressure shaft 12. The side of the pressure shaft 12 facing the positioning cavity 11 has a contact portion for abutting against the positioning film 41. The contact portion is provided with a groove 15, and an elastic pressure strip is embedded in the groove 15.

[0067] The first positioning component 20 is located on the first short frame. The first positioning component 20 includes two first positioning posts 21, which are arranged at intervals along the width direction of the frame 10. The number of positioning holes at the first end of the positioning film 41 is the same as the number of first positioning posts 21, and the positions of the first positioning posts 21 correspond one-to-one with the positions of the positioning holes at the first end of the positioning film 41. The cross-sectional shape of the first positioning post 21 is the same as the shape of the positioning hole, and both are non-circular.

[0068] The second positioning component 30 is located on the second short frame. The second positioning component 30 includes two second positioning posts 31, which are spaced apart along the width direction of the frame 10. The number of positioning holes at the second end of the positioning film 41 is the same as the number of second positioning posts 31, and the positions of the second positioning posts 31 correspond one-to-one with the positions of the positioning holes at the second end of the positioning film 41. The cross-sectional shape of the second positioning posts 31 is the same as the shape of the positioning holes, and both are non-circular. The cross-sectional shapes of the two first positioning posts 21 are different, and similarly, the cross-sectional shapes of the two second positioning posts 31 are different.

[0069] A first limiting groove 13 is provided at the first end of the second side of the frame 10, and a first positioning post 21 is located on the bottom wall of the first limiting groove 13. The first limiting groove 13 is used to limit the first end of the positioning film 41 to prevent the positioning film 41 from moving along the width direction of the frame 10. A second limiting groove 14 is provided at the second end of the second side of the frame 10, and a second positioning post 31 is located on the bottom wall of the second limiting groove 14. The second limiting groove 14 is used to limit the second end of the positioning film 41 to prevent the positioning film 41 from moving along the width direction of the frame 10.

[0070] The working principle of this film application device is as follows: First, the film assembly 40 is placed in the positioning cavity 11, so that both ends of the film assembly 40 extend to the second side of the frame 10 through the two openings 18. The second end of the positioning film 41 is positioned by the second positioning post 31, and the first end of the positioning film 41 is positioned by the first positioning post 21. Then, the pull bar 44 is pulled by hand, causing the dust removal film 43 to separate from the protective film 42 and move towards the strip hole 19 along the gap between the protective film 42 and the electronic device 50. Finally, the dust removal film 43 and the pull bar 44 are pulled out of the positioning cavity 11 through the strip hole 19. Due to the presence of the pressure shaft 12, the pressure shaft 12 causes the film assembly 40 to bend towards the side closer to the electronic device 50. The middle part of the film first adheres to the screen of the electronic device. Under the elastic action of the protective film 42, the area where the film assembly 40 adheres to the screen of the electronic device gradually expands from the middle to both sides, ultimately achieving film application.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A film-applying device, the film-applying device being used for applying film to a membrane assembly, the membrane assembly comprising a positioning film, a protective film, a dust-removing film, and a tension strip, characterized in that, The film application device includes: The frame has a positioning cavity on its first side and a hollow portion communicating with the positioning cavity on its second side. The hollow portion has a pressure shaft fixedly connected to the frame, which is used to bend the membrane assembly toward the side closer to the electronic device. A first positioning component is provided at the first end of the second side of the frame for positioning and engaging with the first end of the positioning membrane. A second positioning component is provided at the second end of the second side of the frame for positioning and engaging with the second end of the positioning membrane.

2. The film-applying device according to claim 1, characterized in that, The first positioning component includes at least one first positioning post, the position of which corresponds one-to-one with the position of the positioning hole at the first end of the positioning film.

3. The film-applying device according to claim 2, characterized in that, The second positioning component includes at least one second positioning post, the position of which corresponds one-to-one with the position of the positioning hole at the second end of the positioning film.

4. The film-applying device according to claim 3, characterized in that, A first limiting groove is provided at the first end of the second side of the frame, and the first positioning post is located in the first limiting groove. The first limiting groove is used to limit the first end of the positioning film.

5. The film-applying device according to claim 4, characterized in that, A second limiting groove is provided at the second end of the second side of the frame, and the second positioning post is located in the second limiting groove. The second limiting groove is used to limit the second end of the positioning film.

6. The film-applying device according to claim 5, characterized in that, The pressure shaft is arranged along the width direction of the frame, and the side of the pressure shaft facing the positioning cavity has a contact portion for abutting against the positioning film. The distance between at least one of the bottom walls of the first limiting groove and the bottom wall of the second limiting groove and the plane where the contact portion is located is greater than or equal to 0.1 cm and less than or equal to 1.5 cm.

7. The film-applying device according to claim 6, characterized in that, The contact portion is provided with an elastic pressure strip, which extends along the length direction of the pressure shaft.

8. The film-applying device according to claim 4, characterized in that, A third limiting groove is provided at the first end of the second side of the frame. The third limiting groove is located on the side of the first limiting groove near the pressure shaft, and a step is formed between the first limiting groove and the third limiting groove.

9. The film-applying device according to any one of claims 1 to 3, characterized in that, The sidewall of the positioning cavity is provided with multiple positioning protrusions at intervals.

10. The film-applying device according to any one of claims 1 to 3, characterized in that, The pressure shaft divides the hollowed-out portion into two openings, the width of which is greater than the width of the positioning film.

11. The film-applying device according to any one of claims 1 to 3, characterized in that, The pressure shaft is an elastic pressure shaft.

12. The film-applying device according to any one of claims 1 to 3, characterized in that, The frame is provided with strip-shaped holes for the dust removal membrane and the pull strip to pass through.

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