Improved double-roller film sticking device

Abstract

The utility model discloses an improved double-roller film pasting device which comprises a positioning seat and a rolling piece located on the positioning seat, the rolling piece relatively moves from the starting end to the tail end of a positioning cavity through relative sliding between the positioning seat and the rolling piece, and a protective film positioned above a mobile phone is pressed while the rolling piece relatively moves. The rolling piece is of a double-roller structure, the axis of the first pressing roller is not parallel to the axis of the second pressing roller, and the second pressing roller is located in front of the first pressing roller; in the process that the rolling piece relatively moves from the starting end to the tail end of the mobile phone, the roller body of the second pressing roller located in the front makes contact with the protective film firstly, the roller body of the first pressing roller located in the rear makes contact with the protective film later, and the two pressing rollers are combined to roll the protective film. The first pressing roller and the second pressing roller are matched with each other, the problem of bubble residue caused by deformation of a single pressing roller in an existing product is solved, meanwhile, the problem of deflection of a protective film caused by a single inclined roller is avoided, and a good attaching effect is finally achieved.

Description

Technical field:

[0001] The utility model relates to the technical field of mobile phone film applicators, in particular to an improved double-roller film applicator. Background technology:

[0002] At present, the film applicators for mobile phone electronic products can be divided into the following types according to the film application method: scraper type, roller type and self-adhesive type. For the roller type film applicator, its working principle is as follows: a pressure roller is arranged on the film applicator. When in use, the relative movement between the pressure roller and the mobile phone positioning seat and the rolling effect generated by the pressure roller press the protective film onto the surface of the mobile phone screen. In the process of rolling, the pressure roller gradually crushes and discharges the air between the protective film and the mobile phone screen, thereby completing the film application.

[0003] For the rolling film applicator, according to the different movement modes, it can be divided into the following two modes:

[0004] The first method is that the pressure roller is relatively stationary, and the positioning seat drives the mobile phone to move. For example, see the utility model patent with Chinese patent application number: 202223437428.1, which discloses a film sticking box and a film sticking assembly, and the technical solution adopted is: the inner shell (positioning seat) is used relative to the base, and the pressing part (pressure roller) installed on the base rolls the mobile phone protective film in the inner shell to complete the film sticking.

[0005] The second method is that the positioning seat is relatively stationary, and the user directly pushes the pressure roller to move. For example, the utility model patent with Chinese patent number: 202222793757.3 discloses a roller film laminating device with accurate laminating position. The technical solution adopted is: install a pressure roller on the sliding bracket, and by pushing the sliding bracket to move, the pressure roller rolls the protective film on the surface of the mobile phone to complete the film laminating.

[0006] During the actual testing of the roller-type film applicator, the inventor found the following problems: no matter which structure of the roller-type film applicator is used, the defective rate after film application exceeds 5% (the defective rate of qualified products should be less than 2%). These poor film application conditions are: after film application, small bubbles will appear in the middle area near the end of the mobile phone film. In response to this undesirable situation, the inventor initially believed that it was caused by insufficient pressure from the pressure roller, but even if measures such as increasing the diameter of the pressure roller or reducing the interval between the pressure roller body and the mobile phone screen are taken, this undesirable situation will still occur, and at the same time, when applying the film, due to the increase in pressure from the pressure roller, a large force needs to be applied to the film, which is very unfriendly to female users. After continuous testing, the inventor found that an important reason for this undesirable situation is that it is caused by the deformation of the pressure roller during the film application process.

[0007] See Figure 1 , Figure 2As shown, when the existing rolling film applicator is working, the protective film 90 is positioned and placed above the mobile phone 95, and then the relative movement between the pressure roller 93 and the mobile phone 95 is manually realized. At the same time, in order to realize the tight pressing of the pressure roller 93 on the protective film, the pressure roller 93 is usually made of plastic material, which results in: when the film is applied, a large friction force will be generated between the pressure roller 93 and the protective film 90, and the friction force will cause the pressure roller 93 to produce a certain bending deformation in the axial direction. Although this deformation is very small, since the pressure roller has a certain length as a whole (the length of the pressure roller is generally greater than the width of the mobile phone screen), the deformation of the middle area of ​​the pressure roller will be more obvious, which directly leads to insufficient downward pressure generated in the middle area of ​​the pressure roller 93, so that the air between the protective film 90 and the mobile phone screen cannot be completely rolled out, and small bubbles 900 are easily left. Moreover, this undesirable situation will become more and more obvious with the repeated use of the film applicator, and the defective film application rate will also increase significantly.

[0008] In response to the above-mentioned problems, the applicant has also developed a rolling film applicator and proposed corresponding improved technical solutions, see the utility model patent applications with Chinese patent application numbers: 202421035675.5 and 202421036156.0. The technical solutions of the applications all use an inclined pressure roller. As the pressure roller continues to move downward relative to the mobile phone, the area between the protective film and the mobile phone that is not rolled by the pressure roller becomes smaller and smaller. The narrow area cannot form a space to accommodate bubbles. Under the continuous squeezing action of the pressure roller, the bubbles are finally discharged from the corners and no bubbles remain. Although this method solves the problem of residual bubbles, a new problem arises after the actual production of the product: the protective film will be offset during the bonding process with the mobile phone, resulting in inaccurate bonding position between the protective film and the mobile phone. One of the main reasons for this situation is the lateral thrust exerted on the protective film by the inclined pressure roller. See. Figure 3 As shown, when the inclined pressure roller 93 contacts the protective film 90, due to the inclination of the pressure roller 93, it will form a lateral thrust on the protective film 90. Under the action of the lateral thrust, the protective film will deflect laterally. At the same time, since the protective film 90 is usually positioned at three points (or four points) in the longitudinal direction, the lateral positioning force is not sufficient, and the probability of the protective film 90 deflecting is relatively high. Eventually, the protective film 90 may be positionally offset during the bonding process with the mobile phone 95. Since the conventional horizontal pressure roller does not generate a horizontal thrust on the protective film during the bonding process, this situation does not exist. Therefore, based on this situation, the inventors comprehensively consider the advantages and disadvantages of the inclined pressure roller and propose the following technical solution. Utility model content:

[0009] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved double-roller film laminating device which can greatly improve the film laminating yield rate.

[0010] To solve the above technical problems, the utility model adopts the following technical solutions: an improved double-roller film applicator, which includes: a positioning seat and a rolling member located on the positioning seat, the positioning seat is provided with a positioning cavity for accommodating and positioning a mobile phone, and the rolling member is relatively moved from the starting end to the end of the positioning cavity through relative sliding between the positioning seat and the rolling member, and while relatively moving, the protective film positioned above the mobile phone is pressed to complete the attachment of the protective film, and the rolling member adopts a double-roller structure, which includes: a first pressing roller and a second pressing roller, and the axes of the first pressing roller and the second pressing roller are not parallel, and the second pressing roller is located in front of the first pressing roller; that is, in the process of relative movement of the rolling member from the starting end to the end section of the mobile phone, the roller body of the second pressing roller located in the front first contacts the protective film and rolls at least a partial area of ​​the protective film, and the roller body of the first pressing roller located in the rear contacts the protective film later and rolls at least a partial area of ​​the protective film.

[0011] Furthermore, in the above technical solution, the axis of the first pressure roller is not perpendicular to the relative sliding direction between the positioning seat and the rolling element, and the axis of the second pressure roller is perpendicular to the relative sliding direction between the positioning seat and the rolling element. Alternatively, the axis of the first pressure roller is not perpendicular to the relative sliding direction between the positioning seat and the rolling element, and the axis of the second pressure roller is not perpendicular to the relative sliding direction between the positioning seat and the rolling element, that is, the first pressure roller and the second pressure roller are both inclined relative to the transverse width direction of the positioning cavity, and the first pressure roller and the second pressure roller are inclined in opposite directions. Alternatively, the axis of the first pressure roller is perpendicular to the relative sliding direction between the positioning seat and the rolling element, and the axis of the second pressure roller is not perpendicular to the relative sliding direction between the positioning seat and the rolling element.

[0012] Furthermore, in the above technical scheme, the lengths of the roller bodies of the first pressure roller and the second pressure roller are both smaller than the width of the positioning cavity, and at the same time, the width of the pressing area of ​​the roller bodies of the first pressure roller and the second pressure roller is not smaller than the width of the positioning cavity; the first pressure roller and the second pressure roller extend from both sides to the middle respectively, and the roller bodies of the first pressure roller and the second pressure roller are staggered in the middle area of ​​the corresponding positioning cavity, that is, in the process of relative movement of the rolling element from the starting end to the end section of the mobile phone, the roller body of the second pressure roller located in the front first contacts the protective film and rolls the left or right area of ​​the protective film, and the roller body of the first pressure roller located in the rear contacts the protective film later and rolls the right or left area of ​​the protective film, and the staggered area of ​​the roller bodies of the first pressure roller and the second pressure roller forms a secondary pressing on the middle area of ​​the protective film.

[0013] Furthermore, in the above technical solution, the front and rear sides of the positioning cavity in the positioning seat are respectively provided with a first positioning portion and a second positioning portion for positioning the protective film.

[0014] Furthermore, in the above technical solution, the angle formed between the axes of the first pressing roller and the second pressing roller is 3 to 45°.

[0015] Furthermore, in the above technical solution, the positioning seat can be pulled out and installed on a base, and the base includes a pull-out cavity that accommodates the positioning seat and is open at one end. The positioning seat is installed in the pull-out cavity, and a guide rail structure for pulling is provided between the positioning seat and the pull-out cavity; a pressure roller seat is provided on the base, and the first pressure roller and the second pressure roller in the rolling member are installed on the pressure roller seat. When the positioning seat is pulled out along the open end of the pull-out cavity, the positioning seat drives the mobile phone placed in the positioning cavity and the protective film positioned on the surface of the mobile phone to move from under the rolling member, and the rolling member rolls the protective film positioned on the mobile phone to complete the attachment of the protective film.

[0016] Furthermore, in the above technical solution, a handle for pulling is provided on one side of the positioning seat adjacent to the opening end of the pull-out cavity, and a cover body is pivotally connected to the base.

[0017] Furthermore, in the above technical solution, the rolling member can be slidably installed on the positioning seat, and slide rails or slide grooves are arranged on both sides of the positioning seat; the rolling member includes: a sliding seat and a first pressure roller and a second pressure roller installed on the sliding seat, and slide grooves or sliders that cooperate with the slide rails or slide grooves arranged on both sides of the positioning seat are arranged on both sides of the sliding seat; when the sliding seat is pushed to slide, the sliding seat drives the first pressure roller and the second pressure roller to move from above the protective film, and rolls the protective film positioned on the mobile phone to complete the attachment of the protective film.

[0018] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art: the utility model adopts a non-parallel dual-pressure roller structure, wherein at least one pressure roller is tilted (the axis of the pressure roller is not perpendicular to the relative sliding direction between the positioning seat and the rolling element), and the inclined pressure roller is used to discharge all bubbles generated when the protective film and the mobile phone are attached, and no bubbles are left. At the same time, another pressure roller is used to position and press the protective film, ensuring that the protective film will not deflect or shift laterally, ensuring the accurate alignment of the protective film and the mobile phone screen, and finally achieving a perfect attachment effect.

[0019] In addition, the new technical solution is applicable to various roller-type film applicators, and can directly improve the existing roller-type film applicators to further reduce the manufacturing costs. Description of the drawings:

[0020] Figure 1 This is a schematic diagram of the film laminating process of an existing rolling film laminating machine;

[0021] Figure 2 It is a schematic diagram of the deformation of the pressure roller in the existing rolling film laminating device during film laminating;

[0022] Figure 3 This is a schematic diagram of the displacement of the protective film when the inclined single pressure roller is laminating;

[0023] Figure 4 It is a structural schematic diagram of the utility model;

[0024] Figure 5 It is a three-dimensional diagram of the first embodiment of the utility model;

[0025] Figure 6 It is a three-dimensional diagram of the rolling element in the first embodiment of the utility model;

[0026] Figure 7 It is a bottom view of the rolling element in the first embodiment of the utility model;

[0027] Figure 8 This is a top view of the first embodiment of the utility model in which a mobile phone is placed after the sliding seat in the rolling member is removed;

[0028] Fig. 9 This is a schematic diagram of the working state structure of the first embodiment of the utility model;

[0029] Fig.10 This is a working principle diagram of the first embodiment of the utility model;

[0030] Fig.11 It is a three-dimensional diagram of the second embodiment of the utility model;

[0031] Fig.12 It is a three-dimensional diagram of the third embodiment of the utility model;

[0032] Fig.13 It is a top view of the fourth embodiment of the utility model;

[0033] Fig.14 This is a three-dimensional diagram of the positioning seat in the fourth embodiment of the utility model when it is pulled out;

[0034] Fig.15 This is a three-dimensional diagram of the cover body in the closed state in the fifth embodiment of the present utility model;

[0035] Fig.16 This is a three-dimensional diagram of the cover body in the open state in the fifth embodiment of the present utility model;

[0036] Fig.17 It is a structural schematic diagram of the sixth embodiment of the utility model;

[0037] Fig.18 It is a structural schematic diagram of Embodiment 7 of the present utility model;

[0038] Fig.19 It is a structural schematic diagram of Embodiment 8 of the present utility model;

[0039] Fig. 20 It is a structural schematic diagram of Embodiment 9 of the present utility model. Specific implementation method:

[0040] See Figure 4 As shown, the utility model is an improved double-roller film applicator, which at least comprises: a positioning seat 1 and a rolling member 4. The positioning seat 1 is provided with a positioning cavity 10 for accommodating and positioning a mobile phone. The rolling member 4 adopts a double-roller structure, which comprises: a first pressing roller 41 and a second pressing roller 42, wherein the second pressing roller 42 is located in front of the first pressing roller 41, and the axes of the first pressing roller 41 and the second pressing roller 42 are not parallel.

[0041] The rolling member 4 is located above the positioning seat 1, and the rolling member 4 can slide relative to the positioning seat 1. The relative sliding between the positioning seat 1 and the rolling member 4 allows the rolling member 4 to move from the starting end to the end of the positioning cavity 10. While moving relative to each other, the first pressing roller 41 and the second pressing roller 42 in the rolling member 4 press the protective film positioned above the mobile phone. Since the second pressing roller 42 is located in front of the first pressing roller 41, the roller body of the second pressing roller 42 located in the front will first contact the protective film and roll the protective film, and the roller body of the first pressing roller 41 located in the rear will then contact the protective film and roll the protective film. The two pressing rollers will roll the protective film in turn, and finally, the protective film will be attached to the mobile phone in the positioning cavity 10, thereby completing the attachment of the protective film.

[0042] In the present invention, the relative sliding between the rolling member 4 and the positioning seat 1 can be achieved in the following two ways: Method 1: the positioning seat 1 is stationary, and the rolling member 4 slides along the positioning seat 1; Method 2: the rolling member 4 is stationary, and the positioning seat 1 slides relative to the rolling member 4. The specific implementation will be described in detail later.

[0043] The utility model adopts a design in which the axes of the first pressing roller 41 and the second pressing roller 42 are not parallel, thereby ensuring that at least one pressing roller is in an inclined state. In this way, the advantages of the inclined pressing roller can be utilized to avoid residual bubbles after the protective film is bonded. At the same time, the other pressing roller can apply a pressing force to the protective film to avoid the lateral thrust formed by a single inclined pressing roller on the protective film, thereby ensuring the accuracy of the protective film being bonded to the mobile phone screen.

[0044] The utility model is described in detail below with reference to specific embodiments and drawings.

[0045] See Figures 5 to 7As shown, this is the first embodiment of the present utility model. The film applicator of the first embodiment includes: a positioning seat 1 and a rolling member 4 located on the positioning seat 1. The positioning seat 1 is provided with a positioning cavity 10 for accommodating and positioning the mobile phone. The mobile phone is positioned by the positioning cavity 10 to ensure that the mobile phone and the positioning seat 1 remain relatively fixed during the film application process. Under normal circumstances, the shape of the positioning cavity 10 matches the outer contour of the mobile phone to be filmed. A first positioning portion 11 and a second positioning portion 12 are respectively provided on the front and rear sides of the positioning cavity 10 in the longitudinal direction. When filming, the protective film will be positioned by the first positioning portion 11 and the second positioning portion 12 to ensure that the protective film is relatively positioned with the mobile phone. The first positioning portion 11 and the second positioning portion 12 can adopt structures such as a pin, a positioning pin, and a positioning buckle. Correspondingly, the protective film includes: a protective film body (finally fitted with the mobile phone screen) and a release film adhered to the upper surface of the protective film body, and the release film is provided with card holes or card slots corresponding to the first positioning portion 11 and the second positioning portion 12 at both ends, which is the same as the prior art and will not be repeated here.

[0046] In the first embodiment, the relative sliding between the rolling member 4 and the positioning seat 1 is as follows: the positioning seat 1 is stationary, and the rolling member 4 slides along the positioning seat 1. Specifically, in the first embodiment, the parallel side walls on the left and right sides of the positioning seat 1 are provided with slide grooves 13. The rolling member 4 comprises: a sliding seat 40 and a first pressure roller 41 and a second pressure roller 42 installed on the sliding seat 40. Side panels 43 are formed on both sides of the sliding seat 40, and sliders 431 cooperating with the slide grooves 13 are respectively provided on the relative inner walls of the two side panels 43. During installation, the spacing between the two side panels 43 of the sliding seat 40 corresponds to the width between the left and right side walls of the positioning seat 1, the sliding seat 40 clamps the positioning seat 1 through the two side panels 43, and the slider 431 falls into the slide groove 13 and cooperates with the slide groove 13 to realize the sliding of the sliding seat 40 along the positioning seat 1.

[0047] In order to maintain stable operation, two sliders 431 are provided on each side plate 43, and an entrance 131 is provided at the end of the slide groove 13, and the sliders 431 enter the slide groove 13 from the entrance 131. Of course, the two sliders 431 provided on each side plate 43 can also be directly combined into a strip-shaped slide bar.

[0048] The first pressing roller 41 and the second pressing roller 42 include: a roller body and a roller shaft. The roller body is usually made of a cylindrical plastic material, and the roller shaft is a metal shaft that passes through the roller body. The first pressing roller 41 and the second pressing roller 42 are installed between the two side plates 43. When the sliding seat 40 is installed on the positioning seat 1, the first pressing roller 41 and the second pressing roller 42 are located above the positioning seat 1. Shaft holes are opened on the opposite inner sides of the side plates 43 on both sides of the sliding seat 40, and the two ends of the roller shaft can be rotatably installed in the shaft holes on the two side plates 43.

[0049] like Figure 4 As shown, in a conventional film applicator, the roller length of the pressing roller is not less than the width of the mobile phone screen or the protective film, so that the protective film can be completely rolled on the surface of the mobile phone screen in the width direction to avoid omissions. Since a double-roller structure is adopted in the utility model, the first pressing roller 41 and the second pressing roller 42 will press the protective film in turn. If the first pressing roller 41 and the second pressing roller 42 still adopt a design in which the roller length is not less than the width of the mobile phone screen or the protective film, this will cause material waste. Therefore, in order to save roller material, this embodiment 1 adopts the following method:

[0050] Combination Figure 7 , Figure 8 As shown, in the first embodiment, the lengths of the roller bodies of the first pressing roller 41 and the second pressing roller 42 are both smaller than the width of the positioning cavity 10. At the same time, the width of the pressing area of ​​the roller bodies of the first pressing roller 41 and the second pressing roller 42 is not smaller than the width of the positioning cavity 10, that is, the total length of the roller bodies of the first pressing roller 41 and the second pressing roller 42 in the horizontal direction after they are combined is not smaller than the width of the positioning cavity 10, so that the first pressing roller 41 and the second pressing roller 42 can be combined with each other to achieve full rolling of the surface of the mobile phone screen.

[0051] The first pressing roller 41 and the second pressing roller 42 extend from the left and right sides to the middle respectively, and the roller bodies of the first pressing roller 41 and the second pressing roller 42 are staggered in the middle area of ​​the corresponding positioning cavity 10. With this design, firstly, the material of the roller body can be saved and the cost can be reduced; secondly, the first pressing roller 41 and the second pressing roller 42 cooperate with each other to also achieve the rolling of the protective film on the surface of the mobile phone screen in the width direction without omission. Finally, compared with the long pressing roller design, this shortened pressing roller body design can reduce the deformation of the roller body in the axial direction and avoid the problem of small bubbles remaining after bonding.

[0052] In order to realize the design that the axes of the first pressing roller 41 and the second pressing roller 42 are not parallel, in the first embodiment, the axis of the first pressing roller 41 is not perpendicular to the relative sliding direction between the positioning seat 1 and the rolling member 4. Figure 8 As shown, the width direction of the positioning cavity 10 is the horizontal X-axis, and the length direction of the positioning cavity 10 is the longitudinal Y-axis. The first pressing roller 41 is inclined at a certain angle relative to the X-axis; the axis of the second pressing roller 42 is perpendicular to the relative sliding direction between the positioning seat 1 and the rolling member 4, that is, the second pressing roller 42 is in a horizontal state parallel to the X-axis. The angle formed between the axis of the first pressing roller 41 and the axis of the second pressing roller 42 is 3 to 45°.

[0053] Since the inclination angle of the axis of the first pressing roller 41 is too large, the length of the first pressing roller 41 will increase, and the space required in the longitudinal direction will also increase, which will increase the length of the entire film applicator. Therefore, the angle between the axis of the first pressing roller 41 and the X-axis direction is preferably 5-25°, and the preferred embodiment is: 10°. The minimum spacing between the roller bodies of the first pressing roller 41 and the second pressing roller 42 is less than 10mm, and the preferred embodiment is: 2-3mm.

[0054] Combination Figures 8 to 10 As shown, when the first embodiment is used, the mobile phone 95 is placed in the positioning cavity 10 of the positioning seat 1, and the front and rear ends of the protective film 90 are suspended and positioned above the positioning cavity 10 by the first positioning portion 11 and the second positioning portion 12. Under the external force of the user, the sliding seat 40 of the rolling member 4 is pushed to slide along the positioning seat 1. In the process of the sliding seat 40 sliding relative to the positioning seat 1, the sliding seat 40 drives the first pressing roller 41 and the second pressing roller 42 to move relative to the positioning seat 1. That is, in the process of the rolling member 4 moving relative to the starting end of the mobile phone 95 to the end section, the roller body of the second pressing roller 42 located in the front first contacts the protective film. Since the axis of the second pressing roller 42 is perpendicular to the relative sliding direction between the positioning seat 1 and the rolling member 4, and the second pressing roller 42 is in a horizontal state, the roller body of the second pressing roller 42 will directly press the protective film 90 on the upper end of the screen of the mobile phone 95, and the protective film 90 and the mobile phone 95 form a precise pressing. As the sliding seat 40 moves, the second pressing roller 42 will perform a linear rolling on the right side area of ​​the protective film 90. At this time, since the roller length of the second pressing roller 42 does not fully extend to the entire width of the mobile phone 95, the second pressing roller 92 cannot press the left area of ​​the protective film 90. This unpressed area will be pressed by the first pressing roller 41 located at the rear.

[0055] The first pressing roller 41 is driven by the sliding seat 40, and its roller body contacts the protective film 90 and rolls the left area of ​​the protective film. The reason why the roller bodies of the first pressing roller 41 and the second pressing roller 42 form staggered areas is to ensure that there is no unpressed area left in the middle area of ​​the protective film.

[0056] In the process of the first pressing roller 41 and the second pressing roller 42 sequentially pressing the protective film 90, since the roller body length of the second pressing roller 42 is shorter than that of the current products, its axial deformation is smaller, and the problem of small bubbles caused by deformation in the existing products will not occur. If the air is squeezed to the unpressed area on the left during the rolling process, the first pressing roller 41 located at the rear will also completely squeeze out the air again. At the same time, since the second pressing roller 42 is horizontally arranged, the friction force formed by its pressing will not produce a lateral force component, so it will not produce a lateral thrust on the protective film 90, so that the protective film 90 can be accurately attached to the screen of the mobile phone 95, and the second pressing roller 42 produces enough pressing force on the protective film 90 to resist the lateral thrust generated by the first pressing roller 41 during the rolling process, ensuring that the protective film 90 will not be deflected during the pressing process.

[0057] The first pressing roller 41 on the left side is in an inclined state, so the first pressing roller 41 will first roll the screen of the mobile phone 95 from the left side of the upper side of the mobile phone 95, and then gradually roll down to the corner position on the left side of the lower side of the mobile phone 95. If bubbles are formed in the protective film 90 during the rolling process, these bubbles will be gradually squeezed by the first pressing roller 41 to the corner position on the left side of the lower side of the mobile phone 95. As the first pressing roller 41 continues to move downward relative to the mobile phone 95, the area between the protective film 90 and the screen of the mobile phone 95 that is not rolled by the first pressing roller 41 becomes smaller and smaller. The narrow area cannot form a space to accommodate bubbles. Under the continuous squeezing action of the first pressing roller 41, the bubbles are finally all discharged from the left corner position. Fig.10 As shown, with the operation of the second pressing roller 42 and the first pressing roller 41, the pressing area A gradually expands, and no bubbles remain, thereby achieving a perfect lamination effect.

[0058] In addition, the lengths of the roller bodies of the first pressing roller 41 and the second pressing roller 42 in the first embodiment are not required to be designed with equal lengths. In actual production, the lengths of the roller bodies of the first pressing roller 41 and the second pressing roller 42 can be set as needed. For example, in order to achieve a better film laminating effect and avoid residual bubbles, the first pressing roller 41 can be designed to be slightly longer so that the width of the area where the mobile phone screen is pressed is greater than the width of the pressing area of ​​the second pressing roller 42. The specific length is not limited, and it is only necessary to ensure that the roller bodies of the first pressing roller 41 and the second pressing roller 42 are staggered at one end facing each other, and ensure that the first pressing roller 41 and the second pressing roller 42 can achieve full rolling of the mobile phone screen surface after being combined with each other.

[0059] See Fig.11 As shown, this is the second embodiment of the utility model. It also includes: a positioning seat 1 and a rolling member 4 located on the positioning seat 1. The positioning seat 1 is provided with a positioning cavity 10. The front and rear sides of the positioning cavity 10 are respectively provided with a first positioning portion 11 and a second positioning portion 12.

[0060] The second embodiment also adopts the positioning seat 1 to remain stationary, and the rolling element 4 slides along the positioning seat 1. The difference from the first embodiment is that in the second embodiment, the side wall of the positioning cavity 10 is provided with a limiting block 101, and the periphery of the mobile phone 95 is limited by the limiting block 101, so that the mobile phone is positioned in the positioning cavity 10. The positioning seat 1 is formed with side panels 14 on the opposite sides, and a slide groove 13 is provided on the inner wall of the side panel 14. The rolling element 4 includes: a sliding seat 40 and a first pressing roller 41 and a second pressing roller 42 installed on the sliding seat 40. The sliding seat 40 is formed with side panels 43 on both sides, and the outer walls of the two side panels 43 are respectively provided with sliders 431 that cooperate with the slide groove 13. During installation, the spacing between the two side panels 43 of the sliding seat 40 corresponds to the spacing between the two side panels 14, the sliding seat 2 is clamped by the two side panels 14, and the slider 431 just falls into the slide groove 13, and cooperates with the slide groove 13 to realize the sliding of the sliding seat 40 along the positioning seat 1.

[0061] In the second embodiment, in order to facilitate pushing the rolling member 4 , a push plate 44 for applying force is integrally formed above the sliding seat 40 .

[0062] See Fig.12 As shown, this is the third embodiment of the utility model, which also includes: a positioning seat 1 and a rolling member 4 located on the positioning seat 1. A positioning cavity 10 is provided on the positioning seat 1, and the periphery of the mobile phone 95 is limited by a limit block 101 in the positioning cavity 10, so that the mobile phone is positioned in the positioning cavity 10. A first positioning portion 11 and a second positioning portion 12 are respectively provided on the front and rear sides of the positioning cavity 10. The rolling member 4 includes: a sliding seat 40 and a first pressing roller 41 and a second pressing roller 42 installed on the sliding seat 40. Side panels 43 are formed on both sides of the sliding seat 40, and the first pressing roller 41 and the second pressing roller 42 are installed between the two side panels 43.

[0063] The third embodiment also adopts the positioning seat 1 to remain stationary, and the rolling member 4 slides along the positioning seat 1. The difference between the first embodiment and the second embodiment is that: the positioning seat 1 is provided with slide rails 15 on opposite sides; the side plates 43 on both sides of the sliding seat 40 are respectively provided with slide grooves 402 that cooperate with the slide rails 15, and the sliding seat 40 slides along the positioning seat 1 through the cooperation of the slide grooves 402 and the slide rails 15, thereby driving the first pressing roller 41 and the second pressing roller 42 to press the protective film.

[0064] In the third embodiment, in order to facilitate pushing the sliding seat 40 , a pulling plate 45 is pivotally connected above the sliding seat 40 for applying force.

[0065] The working principles of the second and third embodiments are the same as those of the first embodiment, and will not be described in detail here.

[0066] See Fig.13 , Fig.14As shown, this is the fourth embodiment of the utility model. The method adopted in the fourth embodiment is that the rolling member 4 is relatively immobile, and the positioning seat 1 drives the mobile phone to move. Specifically, the positioning seat 1 can be pulled out and installed on a base 3, and the base 3 includes a pull-out cavity 30 with one end open for accommodating the positioning seat 1, and the positioning seat 1 is installed in the pull-out cavity 30. A guide rail structure for pulling is provided between the positioning seat 1 and the pull-out cavity 30.

[0067] Specifically, a pair of roller seats 31 are provided on the base 3 near the opening of the drawer cavity 30, and the first roller 41 and the second roller 42 in the rolling member 4 are installed between the two roller seats 31. When the positioning seat 1 is pulled out along the opening end of the drawer cavity 30, the positioning seat 1 drives the mobile phone placed in the positioning cavity 10 and the protective film positioned on the surface of the mobile phone to move from under the rolling member 4, and the rolling member 4 rolls the protective film covering the mobile phone to complete the attachment of the protective film.

[0068] In order to achieve relative sliding between the positioning seat 1 and the base 3, in the first embodiment, a linear track 300 is formed in the drawer cavity 30, and a track groove 100 is provided on the bottom surface of the positioning seat 1 to cooperate with the linear track 300. Under the action of external force, the positioning seat 1 can be pulled and slid in the drawer cavity 30 through the cooperation between the linear track 300 and the track groove 100, so that the first pressing roller 41 and the second pressing roller 42 are fixed relative to the base 3, and the positioning seat 1 drives the mobile phone and the protective film to move relative to the base 3, thereby completing the rolling film lamination.

[0069] The upper edge of the drawer cavity 30 is formed as a limit plate 301 , and the limit plate 301 is used to limit the positioning seat 1 in the drawer cavity 30 to prevent the positioning seat 1 from being separated from the drawer cavity 30 .

[0070] In order to facilitate the user to pull, the positioning seat 1 is provided with a handle 16 for pulling at one side of the opening end of the pull-out cavity 30. The user can pull the positioning seat 1 to move through the handle 16.

[0071] See Fig.15 , Fig.16 As shown, this is the fifth embodiment of the utility model. The fifth embodiment adds a cover plate 5 on the basis of the fourth embodiment. The cover plate 5 is pivotally connected to the base 3, and the specific structure is: the outer side surfaces of the two roller seats 31 on the base 3 are respectively provided with pins 311, and the pins 311 are used to install the cover body 5. The other structures are the same as those of the fourth embodiment.

[0072] When using Example 4 and Example 5, place the mobile phone in the positioning cavity 10, and position the mobile phone through the positioning cavity 10. A first positioning portion 11 and a second positioning portion 12 are provided in the upper and lower outer areas of the positioning cavity 10. The protective film is positioned by the first positioning portion 11 and the second positioning portion 12, and is suspended above the positioning cavity 10, waiting for the rolling of the rolling member 4. When the positioning seat 1 is pulled out along the pull-out cavity 30, the positioning seat 1 drives the mobile phone placed in the positioning cavity 10 and the protective film positioned on the surface of the mobile phone to pass under the second pressing roller 42 and the first pressing roller 41 in turn, and the second pressing roller 42 and the first pressing roller 41 will roll the protective film positioned on the mobile phone in turn. As the positioning seat 1 is pulled, the protective film is finally attached to the screen of the mobile phone.

[0073] In addition, in the first to third embodiments, a cover body can also be pivotally connected to the positioning seat 1, and the entire film applicator can be covered by the cover body to play a protective and aesthetic role.

[0074] In the above embodiment, the present invention does not limit the inclination direction of the first pressing roller 41. Fig.17 As shown, this is the sixth embodiment of the utility model, which is relatively Figure 4 In particular, the tilting direction of the first pressing roller 41 is changed, and changing the tilting direction of the first pressing roller 41 does not affect the final bonding effect.

[0075] In the first to sixth embodiments, the axis of the first roller 41 is not perpendicular to the relative sliding direction between the positioning seat 1 and the rolling member 4 (the first roller 41 is inclined relative to the X axis), and the axis of the second roller 42 is perpendicular to the relative sliding direction between the positioning seat 1 and the rolling member 4 (the second roller 42 is parallel to the X axis and is horizontal). Similarly, the opposite design can also be adopted. Fig.18 As shown, this is the seventh embodiment of the utility model. In the seventh embodiment, the axis of the first pressing roller 41 is perpendicular to the relative sliding direction between the positioning seat 1 and the rolling member 4 (the first pressing roller 41 is in a horizontal state), and the axis of the second pressing roller 42 is not perpendicular to the relative sliding direction between the positioning seat 1 and the rolling member 4 (the second pressing roller 42 is in an inclined state). This method can also achieve the film sticking effect of the utility model.

[0076] See Fig.19 , Fig. 20As shown, this is Embodiment 8 and Embodiment 9 of the utility model. Different from the previous embodiments, in these two embodiments, the axis of the first pressure roller 41 is not perpendicular to the relative sliding direction between the positioning seat 1 and the rolling member (the first pressure roller 41 is in an inclined state relative to the X-axis), and the axis of the second pressure roller 42 is not perpendicular to the relative sliding direction between the positioning seat 1 and the rolling member (the second pressure roller 42 is in an inclined state relative to the X-axis, and is also in an inclined state), that is, the first pressure roller 41 and the second pressure roller 42 are both in an inclined state, and the first pressure roller 41 and the second pressure roller 42 are in opposite inclination directions. Although no horizontal pressure roller is set for positioning in this embodiment, since the first pressure roller 41 and the second pressure roller 42 are in opposite inclination directions, during the bonding process, the lateral thrusts generated by the two pressure rollers on the protective film can offset each other, thereby ensuring that the protective film will not deflect.

[0077] After testing, the eighth and ninth embodiments have the best film laminating effects compared to the other embodiments. This is because, in the two embodiments, the first pressure roller 41 and the second pressure roller 42 both use inclined roller bodies, making full use of the advantages of the inclined rollers to completely eliminate bubble materials during film laminating. At the same time, the first pressure roller 41 and the second pressure roller 42 are designed with opposite inclination directions. During the laminating process, the two pressure rollers generate opposite lateral thrusts on the protective film, thereby offsetting the unknown lateral thrusts that may cause the protective film to deflect, and achieving a perfect film laminating effect.

[0078] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. Improved double-roller film applicator, the film applicator comprises: A positioning seat and a rolling piece located on the positioning seat, wherein the positioning seat is provided with a positioning cavity for accommodating and positioning a mobile phone, and the rolling piece is relatively moved from the starting end to the rear end of the positioning cavity through relative sliding between the positioning seat and the rolling piece, and the protective film positioned above the mobile phone is pressed while relatively moving to complete the attachment of the protective film, characterized in that: The rolling element adopts a double-roller structure, which includes: a first pressing roller and a second pressing roller, and the axes of the first pressing roller and the second pressing roller are not parallel, and the second pressing roller is located in front of the first pressing roller; that is, in the process of relative movement of the rolling element from the starting end to the end section of the mobile phone, the roller body of the second pressing roller located in the front first contacts the protective film and rolls at least a partial area of ​​the protective film, and the roller body of the first pressing roller located in the rear contacts the protective film later and rolls at least a partial area of ​​the protective film.

2. The improved double-roller film applicator according to claim 1 is characterized in that: The axis of the first pressing roller is not perpendicular to the relative sliding direction between the positioning seat and the rolling member, and the axis of the second pressing roller is perpendicular to the relative sliding direction between the positioning seat and the rolling member.

3. The improved double-roller film applicator according to claim 1 is characterized in that: The axis of the first pressure roller is not perpendicular to the relative sliding direction between the positioning seat and the rolling member, and the axis of the second pressure roller is not perpendicular to the relative sliding direction between the positioning seat and the rolling member; that is, the first pressure roller and the second pressure roller are both inclined relative to the transverse width direction of the positioning cavity, and the inclination directions of the first pressure roller and the second pressure roller are opposite.

4. The improved double-roller film applicator according to claim 1 is characterized in that: The axis of the first pressing roller is perpendicular to the relative sliding direction between the positioning seat and the rolling member, and the axis of the second pressing roller is not perpendicular to the relative sliding direction between the positioning seat and the rolling member.

5. The improved double-roller film applicator according to claim 1 is characterized in that: The lengths of the first pressing roller and the second pressing roller are both smaller than the width of the positioning cavity, and at the same time, the width of the pressing area of ​​the first pressing roller and the second pressing roller is not smaller than the width of the positioning cavity; The first pressing roller and the second pressing roller extend from both sides to the middle respectively, and the roller bodies of the first pressing roller and the second pressing roller are staggered in the middle area of ​​the corresponding positioning cavity, that is, in the process of relative movement of the rolling member from the starting end to the end section of the mobile phone, the roller body of the second pressing roller located in the front first contacts the protective film and rolls the left or right area of ​​the protective film, and the roller body of the first pressing roller located in the rear contacts the protective film later and rolls the right or left area of ​​the protective film, and the staggered area of ​​the roller bodies of the first pressing roller and the second pressing roller forms a secondary pressing on the middle area of ​​the protective film.

6. The improved double-roller film applicator according to claim 1, characterized in that: The front and rear sides of the positioning cavity in the positioning seat are respectively provided with a first positioning portion and a second positioning portion for positioning the protective film.

7. The improved double-roller film applicator according to claim 1 is characterized in that: The angle formed between the axes of the first pressing roller and the second pressing roller is 3-45°.

8. The improved double-roller film applicator according to any one of claims 1 to 7, characterized in that: The positioning seat can be pulled out and installed on a base, and the base includes a pull-out cavity with an opening at one end for accommodating the positioning seat. The positioning seat is installed in the pull-out cavity, and a guide rail structure for pulling out is provided between the positioning seat and the pull-out cavity; A pressure roller seat is provided on the base, and the first pressure roller and the second pressure roller in the rolling member are installed on the pressure roller seat. When the positioning seat is pulled out along the opening end of the pull-out cavity, the positioning seat drives the mobile phone placed in the positioning cavity and the protective film positioned on the surface of the mobile phone to move from under the rolling member, and the rolling member rolls the protective film positioned on the mobile phone to complete the attachment of the protective film.

9. The improved double-roller film applicator according to claim 8, characterized in that: A handle for pulling is arranged on one side of the positioning seat adjacent to the opening end of the pull-out cavity, and a cover body is pivotally connected to the base.

10. The improved double-roller film applicator according to any one of claims 1 to 7, characterized in that: The rolling element can be slidably mounted on the positioning seat, and the two sides of the positioning seat are provided with slide rails or slide grooves; the rolling element comprises: a sliding seat and a first pressing roller and a second pressing roller mounted on the sliding seat, and the two sides of the sliding seat are provided with slide grooves or sliders that cooperate with the slide rails or slide grooves provided on the two sides of the positioning seat; When the sliding seat is pushed to slide, the sliding seat drives the first pressing roller and the second pressing roller to move from above the protective film, and roll the protective film positioned on the mobile phone to complete the attachment of the protective film.

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