Inclined drawing film sticking device

Abstract

The utility model discloses an inclined drawing film pasting device which comprises a positioning seat, a base and a compression roller which is installed on the base and located above the positioning seat, the positioning seat can be installed on the base in a relative sliding mode, and a positioning cavity used for containing and positioning a mobile phone is formed in the positioning seat. The transverse direction and the longitudinal direction of the positioning cavity respectively correspond to the width direction and the length direction of the mobile phone, the axis of the compression roller is not parallel to the transverse direction of the positioning cavity, and the included angle between the axis of the compression roller and the transverse direction of the positioning cavity is 3-45 degrees; and under the drawing action of external force, the positioning seat slides along the base, so that the compression roller relatively moves from the starting end of the mobile phone positioned in the positioning cavity to the tail end, and rolls the protective film covering the upper part of the mobile phone while relatively moving, so as to complete the attachment of the protective film. Inclined rolling is adopted, no bubble remains during film pasting, the film pasting reject ratio is effectively reduced, and the film pasting operation convenience is improved.

Description

Technical field:

[0001] The utility model relates to the technical field of mobile phone film pasting, in particular to an inclined drawing film pasting device with double pressure rollers. Background technology:

[0002] The current film applicators can be divided into scraper type, roller type and pull-out type according to the film application method. For the roller type and pull-out type film applicators, their working principle is: a pressure roller is provided on the film applicator. When in use, the relative movement between the pressure roller and the mobile phone positioning seat causes the rolling effect of the pressure roller to adhere the protective film to the surface of the mobile phone screen. In the rolling process, the pressure roller gradually crushes and discharges the air between the protective film and the mobile phone screen, thereby achieving a perfect film application effect.

[0003] The difference between a pull-out film applicator and a roller-type film applicator is that the pressure roller of the pull-out film applicator is relatively stationary, while the positioning base drives the mobile phone to move. For example, see the utility model patent with Chinese patent application number: 202223437428.1, which discloses a film applicator box and film applicator assembly. The technical solution adopted is that the inner shell (positioning base) is used relative to the base, and the pressing member (pressure roller) installed on the base rolls the mobile phone protective film in the inner shell to complete the film application.

[0004] The inventor has also proposed corresponding improved technical solutions, but no matter how the improvement is made, the defective rate of this pull-out film applicator 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 rollers, but even if measures such as increasing the distance between the pressure rollers or reducing the distance between the pressure roller surface 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 rollers, the film needs to be applied with a greater force, which is very unfriendly to female users. After continuous testing, the inventor found that one of the important reasons for this undesirable situation is that the end edge of the film is fitted with the mobile phone screen in advance, making it difficult for the air bubbles to be discharged.

[0005] See Figure 1 、 Figure 2 This is a schematic diagram of a pull-out film applicator. It includes a positioning seat 91, a base 92, and a pressure roller 93. The positioning seat 91 is provided with a positioning cavity 910 for accommodating and positioning a mobile phone 95. The positioning seat 91 can be pulled out and mounted in a pull-out cavity 920 of the base 92. The base 92 is provided with pressure roller lugs 94. The pressure roller 93 is mounted between the two pressure roller lugs 94. The protective film 90 is positioned and mounted above the screen of the mobile phone 95.

[0006] When the pull-out film applicator is in operation, when the positioning seat 91 is pulled out along the pull-out cavity 920, the positioning seat 91 drives the mobile phone 95 placed in the positioning cavity 910 and the protective film 90 covering the surface of the mobile phone 95 to move from under the pressure roller 93 relative to the positioning seat 91. The pressure roller 93 rolls the protective film 90 covering the mobile phone 95 to complete the attachment of the protective film. As can be seen from this, in the current pull-out film applicator, the axis of the pressure roller 93 and the movement direction of the positioning seat 91 are mutually perpendicular.

[0007] See Figure 3 As shown, at the beginning of the film application (before the film application is half completed), the protective film 90 and the mobile phone screen can basically achieve perfect adhesion, and no bubbles are generated in the adhesion area. However, as the film application enters the second half, small bubbles 900 will appear in the middle area near the end of the mobile phone film. This situation is adopted because: under the pressure of the pressure roller 93, the end edge of the protective film 90 is adhered to the screen of the mobile phone 95 in advance, resulting in the small bubbles 900 being unable to be squeezed out by the pressure roller 93. At the same time, since the pressure roller 93 will produce slight deformation in the axial direction during the rolling process, the downward pressure generated by the middle area of ​​the pressure roller 93 is directly insufficient, 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 rate of film application will also increase significantly.

[0008] To address this issue, the inventor initially considered using a more rigid roller material and replacing the plastic material of the pressure roller with a harder material. However, this not only significantly increased product costs, but also resulted in suboptimal test results. After continuous testing, the inventor proposed 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 inclined pull-out film applicator which can greatly improve the film applicator yield rate.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions: an inclined pull-out film applicator, which includes: a positioning seat, a base, and a pressure roller installed on the base and located above the positioning seat. The positioning seat can be installed on the base relatively slidably, and the positioning seat is provided with a positioning cavity for accommodating and positioning the mobile phone. The transverse direction and longitudinal direction of the positioning cavity correspond to the width direction and length direction of the mobile phone respectively. The axis of the pressure roller is not parallel to the transverse direction of the positioning cavity, and the angle formed between the two is 3 to 45°; under the action of external force, the positioning seat slides along the base, causing the pressure roller to move relative to the starting end to the end end of the mobile phone in the positioning cavity, and while moving relative to each other, the protective film covering the mobile phone is pressed to complete the attachment of the protective film.

[0011] Furthermore, in the above technical solution, the angle formed between the axis of the pressing roller and the transverse direction of the positioning cavity is 5 to 25°.

[0012] Furthermore, in the above technical solution, the base has 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.

[0013] 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 pulling cavity.

[0014] Furthermore, in the above technical solution, a pair of upwardly protruding ear plates are formed on the base near the opening end of the drawing cavity, and both ends of the roller shaft of the pressure roller are rotatably mounted on the two ear plates.

[0015] Furthermore, in the above technical solution, a cover is pivotally connected to the base.

[0016] Furthermore, in the above technical solution, the pressing roller includes a first pressing roller and a second pressing roller parallel to each other.

[0017] Furthermore, in the above technical solution, the pressure roller is installed at an angle on the base, that is, the axis of the pressure roller is not perpendicular to the direction in which the positioning seat slides along the base; the lateral direction of the positioning cavity is perpendicular to the direction in which the positioning seat slides along the base.

[0018] Furthermore, in the above technical solution, the pressure roller is horizontally installed on the base, that is, the axis of the pressure roller is perpendicular to the direction in which the positioning seat slides along the base; the lateral direction of the positioning cavity is not perpendicular to the direction in which the positioning seat slides along the base.

[0019] Existing products use a vertical rolling method, that is, a horizontal roller is used to gradually roll from the upper side of the phone to the lower side of the phone. This is a vertical rolling method. However, the technical solution of the present invention breaks through the inherent design concept of existing products and adopts an inclined rolling method, that is, the axis of the roller is designed to be non-parallel to the lateral direction of the positioning cavity. In this way, the roller first rolls the phone screen from one corner of the upper side of the phone, and then gradually rolls downward to the other corner of the lower side of the phone. Even if bubbles form in the protective film during the rolling process, these bubbles will be gradually squeezed by the roller to the corner of the lower side of the phone. Because all bubbles will eventually be squeezed to the corner of the lower side of the phone, and as the roller continues to move downward relative to the phone, the area between the protective film and the phone that is not rolled by the roller becomes smaller and smaller. The narrow area cannot form any space to accommodate bubbles. Under the continuous squeezing action of the roller, all bubbles are finally expelled from the corner, and no bubbles remain, ultimately achieving a perfect fit.

[0020] According to tests, after adopting this technical solution, the film application failure rate of the utility model is less than 0.2%, and even after repeated use, the film application failure rate does not exceed 0.5%. At the same time, after adopting this technical solution, the external force required by the user to apply the film is reduced, making the film application operation more convenient. Description of the drawings:

[0021] Figure 1 This is a three-dimensional diagram of the existing pull-out film applicator

[0022] Figure 2 It is a three-dimensional diagram of the film-applying state of the existing pull-out film applicator;

[0023] Figure 3 This is a schematic diagram of the film laminating process of an existing pull-out film laminator;

[0024] Figure 4 This is a design principle diagram of the first embodiment of the present utility model;

[0025] Figure 5 It is a three-dimensional diagram of the first embodiment of the present utility model;

[0026] Figure 6 This is a front view of the first embodiment of the present utility model;

[0027] Figure 7 This is a three-dimensional diagram of the first embodiment of the present invention in the pulled-out state;

[0028] Figure 8 It is a three-dimensional diagram of the positioning seat in the first embodiment of the utility model;

[0029] Figure 9This is a schematic diagram of the film application process of the first embodiment of the present invention;

[0030] Figure 10 It is a three-dimensional diagram of the second embodiment of the present utility model;

[0031] Figure 11 This is a front view of the third embodiment of the present utility model;

[0032] Figure 12 This is a design principle diagram of the third embodiment of the present utility model. Specific implementation method:

[0033] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0034] This utility model uses an inclined pull-out film applicator, meaning the axis of the pressure roller is designed to be non-parallel to the transverse direction of the positioning cavity. This way, the pressure roller first rolls the phone screen from one corner on the upper side of the phone, then gradually rolls down to the other corner on the lower diagonal side of the phone. Even if bubbles form in the protective film during the rolling process, they are gradually squeezed by the pressure roller to the corner on the lower side of the phone. Under the continuous squeezing action of the pressure roller, the bubbles are finally expelled from the corner, leaving no bubbles, ultimately achieving a perfect fit.

[0035] See Figures 4 to 9 As shown in FIG, this is the first embodiment of the film applicator of the present invention. The film applicator of the first embodiment includes: a positioning seat 1, a base 2 and a pressing roller 4.

[0036] The positioning base 1 is provided with a positioning cavity 10 for accommodating and positioning a mobile phone. The shape of this cavity 10 matches the outer contour of the mobile phone to which the protective film is to be applied. During use, the mobile phone 5 is placed in the positioning cavity 10, and the positioning cavity 10 is used to position the mobile phone 5. Positioning protrusions 13 and 14 are provided on the upper and lower outer areas of the positioning cavity 10. These positioning protrusions 13 and 14 are used to position the protective film and are suspended above the positioning cavity 10, awaiting the pressing of the pressing roller 4.

[0037] The base 2 is used to support the positioning seat 1, and a relatively slidable mounting structure is adopted between the positioning seat 1 and the base 2. Specifically, the base 2 has a drawer cavity 20 that accommodates the positioning seat 1 and is open at one end. The positioning seat 1 is installed in the drawer cavity 20, and a guide rail structure for drawing is provided between the positioning seat 1 and the drawer cavity 20. The positioning seat 1 can be withdrawn along the open end of the drawer cavity 20 under the action of an external force.

[0038] As a preferred embodiment, in order to facilitate the user to apply force, the positioning seat 1 is provided with a handle portion 11 for pulling on one side adjacent to the opening end of the pulling cavity 20 .

[0039] As a preferred embodiment, the guide rail structure between the positioning seat 1 and the drawer cavity 20 can adopt the following structure: two parallel guide rails 23 are provided on the surface of the drawer cavity 20, and a slide groove 15 is provided on the bottom surface of the positioning seat 1 to cooperate with the guide rails 23. The slide groove 15 cooperates with the guide rails 23 to achieve the sliding cooperation between the positioning seat 1 and the drawer cavity 20. In order to improve the sliding accuracy of the positioning seat 1 along the base 2, a limit plate 22 is formed at the upper edge of the drawer cavity 20. The function of the limit plate 22 is to confine the positioning seat 1 in the drawer cavity 20 and prevent the positioning seat 1 from escaping from the drawer cavity 20.

[0040] The pressure roller 4 is mounted on the base 2 and positioned above the positioning seat 1. Specifically, the pressure roller 4 typically comprises a roller body 40 and a roller shaft 41. The roller body 40 is typically made of a cylindrical plastic material, and the roller shaft 41 is a metal shaft that passes through the roller body 40. A pair of upwardly projecting ear plates 21 are formed near the opening of the drawer chamber 20 on the base 2. The opposing inner sides of the ear plates 21 define shaft holes. The ends of the roller shaft 41 are rotatably mounted in the shaft holes of the two ear plates 21.

[0041] The outer side surfaces of the ear plates 21 are respectively provided with pins 211 , which can be used to install the cover body.

[0042] For better explanation, the present invention establishes an XY coordinate system based on the transverse direction and longitudinal direction of the positioning cavity 10, wherein the transverse direction of the positioning cavity 10 is the X-axis and the longitudinal direction is the Y-axis. That is, the transverse direction and the longitudinal direction of the positioning cavity 10 correspond to the directions of the width W and the length H of the mobile phone 5, respectively. The axis L of the pressure roller 4 of the present invention is not parallel to the transverse direction (X-axis) of the positioning cavity 10, and the angle formed between the two is 3 to 45 degrees. In other words, the axis L of the pressure roller 4 of the present invention is not perpendicular to the longitudinal direction (Y-axis) of the positioning cavity 10, and the angle formed between the two is 3 to 45 degrees.

[0043] Combine Figure 4 As shown, in order to achieve that the axis L of the pressure roller 4 is not parallel to the transverse direction (X-axis) of the positioning cavity 10, the present embodiment adopts the following structure: the positioning cavity 10 is still arranged in the same manner as the existing product, and the pressure roller 4 is installed on the base 2 at an angle relative to the positioning cavity 10, that is, the axis L of the pressure roller 4 is not perpendicular to the sliding direction F of the positioning seat 1 along the base 2; the transverse direction (X-axis) of the positioning cavity 10 is perpendicular to the sliding direction F of the positioning seat 1 along the base 2, or it can be said that the longitudinal direction (Y-axis) of the positioning cavity 10 is parallel to the sliding direction F of the positioning seat 1 along the base 2.

[0044] If the axis of the pressure roller 4 is tilted too much, the length of the pressure roller 4 will increase, and the space required in the longitudinal direction will also increase, which will increase the length of the entire film applicator. Therefore, in this embodiment, the angle formed between the axis L of the pressure roller 4 and the transverse direction of the positioning cavity 10 is preferably 5-25°, and the preferred embodiment is 10°.

[0045] Combine Figure 9 As shown, when the first embodiment is used, the mobile phone 5 is placed in the positioning cavity 10 of the positioning seat 1, and the protective film 6 is suspended and positioned above the positioning cavity 10 by the positioning protrusions 13 and 14. Under the action of the user's external force pulling the handle portion 11, the positioning seat 1 slides along the base 2, and the relative sliding direction of the pressure roller 4 is F. Under the action of this external force, the positioning seat 1 is pulled out along the open end of the pull-out cavity 20. During the movement of the positioning seat 1 relative to the base 2, the pressure roller 4 moves relative to the positioning seat 1, that is, the pressure roller 4 moves relative to the positioning seat 1, that is, the pressure roller 4 moves relative to the positioning seat 1 from the starting end of the mobile phone 5 located in the positioning cavity 10 to the end end, and while moving relative to each other, it rolls the protective film covering the top of the mobile phone. Because the pressure roller 4 is tilted relative to the positioning cavity 10 (that is, the axis L of the pressure roller 4 is not parallel to the transverse direction of the positioning cavity 10), the pressure roller 4 will first start rolling the screen of the mobile phone 5 from the right corner of the upper side of the mobile phone 5, and then gradually roll down to the left corner of the diagonal position of the lower side of the mobile phone 5. If bubbles are formed in the protective film 6 during the rolling process, these bubbles will be gradually squeezed by the pressing roller 4 to the left corner of the lower side of the mobile phone 5. As the pressing roller 4 continues to descend relative to the mobile phone 5, the area between the protective film and the screen of the mobile phone 5 that is not rolled by the pressing roller 4 becomes smaller and smaller. The narrow area cannot form a space to accommodate bubbles. Under the continuous squeezing action of the pressing roller 4, the bubbles are finally discharged from the left corner without any residual bubbles, and finally a perfect fitting effect is achieved.

[0046] See Figure 10 As shown, this is Example 2 of the present invention, which differs from Example 1 in that: in Example 2, a cover 3 is pivotally connected to the base 2. In conjunction with Example 1, the outer sides of the ear plates 21 are each provided with a pin 211, which engages with the pin hole in the cover 3, thereby forming a shaft-hole fit. The cover 3 can be placed over the base 2, thereby completely covering the positioning seat 1, thereby protecting the mobile phone and protective film. Alternatively, the pressure roller 4 can be directly connected to the cover 3 and then mounted on the base 2 through the cover 3.

[0047] See Figure 11 、 Figure 12As shown, this is Example 3 of the present invention, which is different from Example 1 in that: in order to achieve that the axis L of the pressure roller 4 is not parallel to the transverse direction (X-axis) of the positioning cavity 10, this Example 3 adopts the following structure: the pressure roller 4 is arranged in the same way as the existing product, that is, the pressure roller 4 is arranged horizontally, and the positioning cavity 10 is inclined relative to the pressure roller 4 on the positioning seat 1, that is, the axis L of the pressure roller 4 is perpendicular to the sliding direction F of the positioning seat 1 along the base 2; the transverse direction (X-axis) of the positioning cavity 10 is not perpendicular to the sliding direction F, or it can be said that the longitudinal direction (Y-axis) of the positioning cavity 10 is not parallel to the sliding direction F.

[0048] The difference between the third embodiment and the first embodiment is that the first embodiment adopts an inclined setting of the pressing roller 4, while the third embodiment adopts an inclined setting of the positioning cavity 10. The working principles of the two are the same and will not be described in detail here.

[0049] In addition, in the above-mentioned embodiments one, two, and three, the pressure roller 4 adopts a single pressure roller structure. In order to further improve the film-sticking effect, the present invention can also adopt a double pressure roller design, that is, the pressure roller 4 adopts a first pressure roller and a second pressure roller arranged parallel to each other. The double pressure roller design further improves the film-sticking effect and completely eliminates bubbles.

[0050] 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 based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. An inclined pull-out film applicator, the film applicator comprising: A positioning seat, a base, and a pressure roller mounted on the base and located above the positioning seat. The positioning seat can be relatively slidably mounted on the base, and a positioning cavity for accommodating and positioning a mobile phone is provided on the positioning seat, characterized in that: The transverse direction and the longitudinal direction of the positioning cavity correspond to the width direction and the length direction of the mobile phone respectively, the axis of the pressing roller is not parallel to the transverse direction of the positioning cavity, and the angle formed between the two is 3 to 45°; Under the action of external force, the positioning seat slides along the base, causing the pressure roller to move relatively from the starting end of the mobile phone in the positioning cavity to the tail end. While moving relatively, the pressure roller presses the protective film covering the top of the mobile phone to complete the attachment of the protective film.

2. The inclined pull-out film applicator according to claim 1, characterized in that: The angle formed between the axis of the pressing roller and the transverse direction of the positioning cavity is 5 to 25 degrees.

3. The inclined pull-out film applicator according to claim 1, characterized in that: The base has a draw-out cavity which accommodates the positioning seat and is open at one end. The positioning seat is installed in the draw-out cavity, and a guide rail structure for drawing and pulling is arranged between the positioning seat and the draw-out cavity.

4. The inclined pull-out film applicator according to claim 3, characterized in that: A handle for pulling is arranged on one side of the positioning seat adjacent to the opening end of the pulling cavity.

5. The inclined pull-out film applicator according to claim 3, characterized in that: The base is formed with a pair of upwardly protruding ear plates at a position adjacent to the opening end of the draw-out cavity, and the two ends of the roller shaft of the pressing roller are rotatably mounted on the two ear plates.

6. The inclined pull-out film applicator according to claim 1, characterized in that: A cover body is pivotally connected to the base.

7. The inclined pull-out film applicator according to claim 1, characterized in that: The pressing rollers include a first pressing roller and a second pressing roller which are parallel to each other.

8. The inclined pull-out film applicator according to any one of claims 1 to 7, characterized in that: The pressing roller is installed obliquely on the base, that is, the axis of the pressing roller is not perpendicular to the direction in which the positioning seat slides along the base; the lateral direction of the positioning cavity is perpendicular to the direction in which the positioning seat slides along the base.

9. The inclined pull-out film applicator according to any one of claims 1 to 7, characterized in that: The pressing roller is horizontally installed on the base, that is, the axis of the pressing roller is perpendicular to the direction in which the positioning seat slides along the base; the lateral direction of the positioning cavity is not perpendicular to the direction in which the positioning seat slides along the base.

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