Film pasting jig and film pasting equipment

Abstract

The utility model discloses a film sticking jig and film sticking equipment, the film sticking jig is provided with an accommodating space for placing a piece to be stuck with a film and a film body supporting part arranged around the accommodating space, and a plurality of exhaust grooves are formed in the peripheral wall of the film body supporting part and are communicated with the accommodating space. When the pasting operation is executed, gas between the film material and the piece to be pasted with the film escapes outwards along the exhaust grooves, the problems of bubbles and wrinkles of the film material are avoided, and the qualified rate of products is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of film pasting, and particularly relates to a film pasting fixture and a film pasting device. Background Art

[0002] In the field of consumer electronics, brittle materials such as glass, gemstone, and ceramic are commonly used as windows. With the increasing requirements of consumers for visual experience and feel, currently, concave and special-shaped windows are relatively common. For example, for the smart glasses of smart wearable electronic devices, their lenses are made of glass material, and the lenses are required to have a high concave curvature. However, to protect the safety of users and prevent the fragments from hurting the users' eyes when the lenses are broken, an explosion-proof film needs to be pasted on the lenses. In the prior art, generally, the explosion-proof film is covered on the lenses by creating a pressure difference. However, since the lenses are in a concave shape, during the process of pasting the explosion-proof film, the explosion-proof film will first cover the edge of the lens to form a sealed cavity, and the gas between the explosion-proof film and the lens cannot be discharged smoothly, resulting in problems such as bubbles and wrinkles in the product. Summary of the Utility Model

[0003] Aiming at the above defects or deficiencies, the utility model provides a film pasting fixture and a film pasting device, aiming to solve the technical problems of bubbles and wrinkles in the existing film pasting technology.

[0004] To achieve the above object, the utility model provides a film pasting fixture. The film pasting fixture includes a film pasting base, a placement space for a to-be-film-pasted part is arranged on the film pasting base, and a film body support part surrounding the placement space. A plurality of exhaust grooves are formed on the peripheral wall of the film body support part, and the plurality of exhaust grooves communicate with the placement space.

[0005] In an embodiment of the utility model, the part of the film body support part between two adjacent exhaust grooves is set as a support unit body, and a chamfered surface is formed at one end of the support unit body close to the placement space.

[0006] In an embodiment of the utility model, an anti-sticking layer is arranged on the surface of the film pasting fixture.

[0007] To achieve the above object, the utility model further provides a film pasting device. The film pasting device includes a film pasting upper cavity, a film pasting lower cavity, a first air inlet and exhaust device, a second air inlet and exhaust device, and a plurality of the above film pasting fixtures. The film pasting upper cavity is detachably arranged on the film pasting lower cavity, and a film material placement plate is arranged on the film pasting lower cavity. An upper cavity backing plate for cooperating with the film material placement plate to press is arranged on the film pasting upper cavity. The film pasting fixture is arranged in the film pasting lower cavity. The first air inlet and exhaust device communicates with the film pasting upper cavity, and the second air inlet and exhaust device communicates with the film pasting lower cavity.

[0008] In an embodiment of the present utility model, the film pasting device further includes a lifting device disposed in the lower film pasting cavity. The lifting device is drivingly connected to the film pasting fixture and can lift the film pasting fixture from the lower film pasting cavity to the upper film pasting cavity.

[0009] In an embodiment of the present utility model, the film pasting device further includes a first heating device disposed on the lower side of the film pasting fixture. The first heating device includes an elastic member and a heating plate. The elastic member can elastically press the heating plate against the film pasting fixture.

[0010] In an embodiment of the present utility model, the film pasting device includes a reinforcing plate connecting a plurality of film pasting fixtures.

[0011] In an embodiment of the present utility model, the film pasting device further includes a second heating device disposed in the upper film pasting cavity.

[0012] In an embodiment of the present utility model, the second heating device includes a plurality of first heaters and two second heaters. The first heaters are arranged opposite to the film pasting fixtures, and the two second heaters are respectively arranged corresponding to the two ends of the reinforcing plate.

[0013] In an embodiment of the present utility model, the first air inlet and exhaust device includes a plurality of air inlet pipes communicating with the upper film pasting cavity. The plurality of air inlet pipes are respectively arranged corresponding to the plurality of film pasting fixtures one by one.

[0014] In an embodiment of the present utility model, a control valve is arranged between the first air inlet and exhaust device and the upper film pasting cavity, and the opening degree of the control valve is adjustable.

[0015] Through the above technical solutions, the film pasting fixture provided by the embodiment of the present utility model has the following beneficial effects:

[0016] When using the above film pasting fixture to perform the pasting operation, first place the to-be-film-pasted part in the accommodating space, then lay the film material on the upper side of the film body supporting part, and finally press down the film material to make it adhere to the to-be-film-pasted part. Since a plurality of exhaust grooves are sequentially and spaced apart around the accommodating space on the film body supporting part, the film material and the film body supporting part are always in a non-sealed state. During the process of pressing down the film material, the gas between the film material and the to-be-film-pasted part escapes outward along the exhaust grooves, avoiding problems such as bubbles and wrinkles in the film material and ensuring the qualified rate of the product.

[0017] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide an understanding of the present utility model and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0019] Figure 1It is a schematic structural diagram of a film pasting fixture in an embodiment of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of a film pasting fixture and a first heating device in an embodiment of the present utility model;

[0021] Figure 3 It is a schematic diagram of a heating device in an embodiment of the present utility model;

[0022] Figure 4 It is another schematic diagram of a heating device in an embodiment of the present utility model;

[0023] Figure 5 It is a structural diagram of a heating device in an embodiment of the present utility model.

[0024] Description of reference numerals

[0025] 1 Film pasting fixture 11 Film pasting base

[0026] 12 Film body support part 123 Exhaust groove

[0027] 124 Support unit body 125 Chamfered surface

[0028] 13 Accommodation space 2 Film pasting station body

[0029] 21 Film pasting upper cavity 211 Upper cavity backing plate

[0030] 22 Film pasting lower cavity 221 Film material placement plate

[0031] 3 First air inlet and exhaust device 31 Air inlet pipe

[0032] 4 Second air inlet and exhaust device 5 Lifting device

[0033] 6 First heating device 61 Elastic member

[0034] 62 Heating plate 7 Substrate

[0035] 8 Second heating device 81 First heater

[0036] 82 Second heater 9 Reinforcing plate Detailed implementation manners

[0037] The following describes in detail the specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0038] The following describes the film pasting fixture 1 and the film pasting device of the present utility model with reference to the accompanying drawings.

[0039] AsFigure 1 As shown in the figure, the present utility model provides a film pasting fixture 1, wherein the film pasting fixture 1 includes:

[0040] A film pasting base 11, on which there is a receiving space 13 for placing the part to be pasted with film, and a film body supporting part 12 arranged around the receiving space 13. The film body supporting part 12 is used to support the film material, and a plurality of exhaust grooves 123 are formed on the peripheral wall of the film body supporting part 12, and the plurality of exhaust grooves 123 communicate with the receiving space 13.

[0041] When using the above-mentioned film pasting fixture 1 to perform the pasting operation, first place the part to be pasted with film in the receiving space 13, then lay the film material on the upper side of the film body supporting part, and finally press down the film material to make it fit on the part to be pasted with film. Since a plurality of exhaust grooves 123 are sequentially and spaced apart around the receiving space 13 on the film body supporting part 12, the space between the film material and the film body supporting part 12 is always in a non-sealed state. During the process of pressing down the film material, the gas between the film material and the part to be pasted with film escapes outward along the exhaust grooves 123, avoiding problems such as bubbles and wrinkles on the film material, and ensuring the qualified rate of the product.

[0042] In the embodiment of the present utility model, the part of the film body supporting part 12 between two adjacent exhaust grooves 123 is set as a supporting unit body 124, and a chamfer surface 125 is formed at one end of the supporting unit body 124 close to the receiving space 13. The chamfer surface 125 is inclined from the receiving space 13 towards the top end of the supporting unit body 124. The setting of the chamfer surface 125 can make the height difference between the receiving space 13 and the supporting unit body 124 transition smoothly. Bubbles are not easily generated at the edge of the part to be pasted with film close to the chamfer surface 125, and the film material can be smoothly pasted onto the edge of the part to be pasted with film, ensuring that the film material can completely cover the part to be pasted with film.

[0043] In the embodiment of the present utility model, the surface of the film pasting fixture 1 is covered with an anti-sticking layer. The setting of the anti-sticking layer makes the upper surface of the fixture smooth. On the one hand, it can prevent the part to be pasted with film from being scratched by the film pasting fixture 1, and on the other hand, it can prevent the film material from sticking to the supporting unit body 124, facilitating the removal of the product from the film pasting fixture 1 after the pasting operation is completed. Specifically, the material of the anti-sticking layer is preferably Teflon, which is suitable for the high-temperature film pasting environment. Of course, the present utility model is not limited thereto, and it is also possible to set the anti-sticking layer as other materials such as polytetrafluoroethylene and ceramic particles.

[0044] Such as Figures 3 to 5As shown in the figure, in order to achieve the above object, the present utility model further provides a film pasting device. The film pasting device includes a film pasting station body 2, a first air inlet and exhaust device 3, a second air inlet and exhaust device 4, and a plurality of the above-mentioned film pasting jigs 1. The film pasting station body 2 includes a film pasting upper cavity 21 and a film pasting lower cavity 22 which are oppositely arranged. The film pasting upper cavity 21 is movably arranged on the film pasting lower cavity 22. There is a film material placement plate 221 on the film pasting lower cavity 22, and an upper cavity backing plate 211 cooperating with the film material placement plate 221 is arranged on the film pasting upper cavity 21. The upper cavity backing plate 211 and the film material placement plate 221 can cooperate to clamp the film material. The film pasting jig 1 is arranged in the film pasting lower cavity 22. The first air inlet and exhaust device 3 is communicated with the film pasting upper cavity 21, and the second air inlet and exhaust device 4 is communicated with the film pasting lower cavity 22. The pasting of the film material is realized by creating a pressure difference. This process does not require a film pressing mechanism in contact with the film material and will not cause impact on the part to be pasted with film, especially suitable for pasting the film material on the part to be pasted with film (such as the lens of an MR glasses) with a curved concave special-shaped structure.

[0045] In an embodiment of the present utility model, the film pasting device further includes a lifting device 5 arranged in the film pasting lower cavity 22. The lifting device 5 is drivingly connected to the film pasting jig 1 and can lift the film pasting jig 1 from the film pasting lower cavity 22 into the film pasting upper cavity 21. After the film pasting jig 1 is lifted, the film pasting jig 1 contacts the film material, forming a greater pressure difference between the film pasting upper cavity 21 and the film pasting lower cavity 22, so that the film material can be more closely attached to the surface of the part to be pasted with film, thereby further preventing the generation of bubbles. In a specific embodiment of the present utility model, when the lifting device 5 lifts the film pasting jig 1 upward, the first air inlet and exhaust device 3 does not work, and the second air inlet and exhaust device 4 continues to evacuate the film pasting lower cavity 22. After the lifting device 5 lifts the film pasting jig 1 into the film pasting upper cavity 21, under the dual action of the pressure difference between the upper and lower film pasting cavities and the contact between the film pasting jig 1 and the film material, the space between the film material and the film pasting jig 1 is instantaneously compressed, and the air pressure in the film pasting lower cavity 22 can instantaneously drop, so that the film material is instantaneously attached to the surface of the part to be pasted with film and the generation of bubbles is prevented.

[0046] Specifically, a substrate 7 is arranged on the upper side of the lifting device 5, and a plurality of film pasting jigs 1 are sequentially arranged at intervals along the length direction of the substrate 7 to simultaneously realize the film pasting processing of multiple products, and each film pasting jig 1 can be individually disassembled, maintained or replaced.

[0047] As Figure 2 shown, in an embodiment of the present utility model, the film pasting device further includes a first heating device 6 arranged under the film pasting jig 1. The first heating device 6 includes an elastic member 61 and a heating plate 62. The elastic member 61 can elastically press the heating plate 62 against the film pasting jig 1. The heating plate 62 is used to heat the film pasting jig 1. By arranging the elastic member 61, the heating plate 62 can be in full contact with the film pasting base 11 of the film pasting jig 1 to ensure the heat transfer efficiency.

[0048] As Figure 4 shown, in the embodiment of the present utility model, a plurality of film pasting fixtures 1 are connected by a reinforcing plate 9, and as long as the reinforcing plate 9 is carried, a plurality of film pasting fixtures 1 can be carried at one time.

[0049] In the embodiment of the present utility model, the number of the first heating devices 6 is set corresponding to the number of the film pasting fixtures 1. The substrate 7 supports the first heating devices 6, and then the first heating devices 6 elastically support the film pasting fixtures 1. Even if the reinforcing plate 9 is deformed, each group of heating devices 6 can still be in contact with the film pasting fixtures 1 to ensure the uniformity of heat reception of each film pasting fixture 1. For example, if the reinforcing plate 9 is bent due to multiple transports and presents an arc with a high middle and low ends, the elastic compression amount of the first heating devices 6 at both ends is greater than that of the first heating devices 6 at the middle position, so that the multiple first heating devices 6 are all arranged in an arc shape in contact with the film pasting fixtures 1.

[0050] Specifically, the elastic member 61 includes a bottom plate and a plurality of compression springs arranged on the bottom plate, and the upper ends of the compression springs are connected to the heating plate 62. In addition, the elastic member 61 can also be set as an air spring or other telescopic structures.

[0051] In the embodiment of the present utility model, the film pasting device further includes a second heating device 8 arranged in the film pasting upper cavity 21. The second heating device 8 is used to heat and soften the film material to facilitate the complete adhesion of the film material on the to-be-film-pasted part. The second heating device 8 includes a plurality of first heaters 81 and two second heaters 82. The first heaters 81 are arranged opposite to the film pasting fixtures 1, and the two second heaters 82 are respectively arranged corresponding to both ends of the reinforcing plate 9. The heat radiation generated by the first heaters 81 diffuses outward from top to bottom. That is to say, in addition to the heat radiation of the first heaters 81 directly facing each film pasting fixture 1, each film pasting fixture 1 will also receive the heat radiation of the two first heaters 81 on the adjacent sides. For the film pasting fixtures 1 arranged at both ends of the reinforcing plate 9, the second heaters 82 are added to assist in heating, so as to ensure that all the film pasting fixtures 1 receive the same amount of heat, which is beneficial to controlling the effect of film material pasting and improving the product qualification rate.

[0052] In the embodiment of the present utility model, the first air inlet and outlet device 3 includes a plurality of air inlet pipes 31 communicated with the film pasting upper cavity 21. The plurality of air inlet pipes 31 are respectively arranged in one-to-one correspondence with the plurality of film pasting fixtures 1 to ensure that the air intake volume and air intake speed at the position points corresponding to each film pasting fixture 1 are the same, so that the pressure received by the film materials on each film pasting base 11 is always the same, ensuring the consistency of the adhesion between the film materials and the to-be-film-pasted parts in each product.

[0053] In the embodiment of the present utility model, a control valve is provided between the first air inlet and exhaust device 3 and the upper film attaching cavity 21, and the opening degree of the control valve is adjustable. By changing the opening degree of the control valve, the gas inlet speed can be controlled to adapt to the attaching requirements at different times.

[0054] In a specific embodiment of the present utility model, the film attaching device includes: a film attaching station body 2, a first air inlet and exhaust device 3, a second air inlet and exhaust device 4, a first heating device 6, a second heating device 8, a film attaching fixture 1, and a detection system. The structure of the film attaching station body 2 is as described above, and four film attaching fixtures 1 are arranged in sequence along the length direction of the substrate 7; corresponding to the four film attaching bases 11, the first air inlet and exhaust device 3 is provided with four air inlet pipes 31, the first heating device 6 is provided with four heating components, and the second heating device 8 is provided with four first heaters 81 and two second heaters 82; the detection system includes a fixture temperature measuring device for detecting the temperature of the film attaching fixture 1, a pressure detection device for measuring the pressure in the upper film attaching cavity 21 and the lower film attaching cavity 22, and a film temperature detection device for detecting the temperature of the film material. The operation process of using this film attaching device is as follows:

[0055] Place the workpiece to be film-attached in the accommodating space 13 of the film attaching fixture 1, and heat the film attaching fixture 1 through the first heating device 6. When the fixture temperature measuring device detects that the film attaching fixture 1 reaches 115 °C, place the film material on the film material placing plate 221 of the lower film attaching cavity 22, and make the upper cavity backing plate 211 of the upper film attaching cavity 21 press the film material on the film material placing plate 221. The first air inlet and exhaust device 3 and the second air inlet and exhaust device 4 evacuate the film attaching chamber, and at the same time remove dust. When the pressure detection device senses that the pressure in the film attaching chamber drops to 0.1 kPa, the second heating device 8 starts to heat the film material; when the film temperature detection device senses that the film material is heated to 150 °C, the lifting device 5 lifts the film attaching fixture 1 and the film material into the upper film attaching cavity 21, and the vacuum degree of the lower film attaching cavity 22 instantaneously drops to 0.05 kPa. The air inlet of the upper film attaching cavity 21 intakes air with a 30% valve. The area of the film material corresponding to the center position of the film attaching base 11 first drops and contacts the center of the workpiece to be film-attached. Under the simultaneous action of air intake and heating, the film material gradually adheres to the workpiece to be film-attached from the center to the periphery, and the gas between the film material and the workpiece to be film-attached is discharged from the exhaust groove 123; when the pressure detection device senses that the air pressure in the upper film attaching cavity 21 reaches 30 kPa, the film material attaching operation is completed at this time. Turn off the heating device, and then the air inlet of the upper film attaching cavity 21 intakes air with a 100% valve. After the air pressure in the upper film attaching cavity 21 reaches the standard atmospheric pressure, ensure for 10 - 30 s so that the pressure makes the film material and the workpiece to be film-attached contact more closely, and then the lower film attaching cavity 22 is inflated to break the vacuum state.

[0056] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0057] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0059] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A film pasting fixture, characterized in that, The film pasting fixture (1) includes: A film pasting base (11) provided with an accommodation space (13) for placing the component to be pasted with a film, and a film body support portion (12) disposed around the accommodation space (13). A plurality of exhaust grooves (123) are formed on the peripheral wall of the film body support portion (12), and the plurality of exhaust grooves (123) communicate with the accommodation space (13).

2. The film attaching fixture according to claim 1, wherein, The portion of the film body support portion (12) between two adjacent exhaust grooves (123) is defined as a support unit body (124), and a chamfer surface (125) is formed at one end of the support unit body (124) close to the accommodation space (13).

3. The film attaching fixture according to claim 1, wherein The surface of the film pasting fixture (1) is covered with an anti-adhesive layer.

4. A film laminating device, characterized in that, The film pasting device includes a film pasting upper cavity (21), a film pasting lower cavity (22), a first air inlet and exhaust device (3), a second air inlet and exhaust device (4), and a plurality of film pasting fixtures (1) according to any one of claims 1 to 3. The film pasting upper cavity (21) is disposed on the film pasting lower cavity (22) in an openable and closable manner, and a film material placement plate (221) is provided on the film pasting lower cavity (22). An upper cavity backing plate (211) for cooperating and pressing with the film material placement plate (221) is provided on the film pasting upper cavity (21). The film pasting fixture (1) is disposed in the film pasting lower cavity (22). The first air inlet and exhaust device (3) communicates with the film pasting upper cavity (21), and the second air inlet and exhaust device (4) communicates with the film pasting lower cavity (22).

5. The film laminating device according to claim 4, wherein, The film pasting device further includes a lifting device (5), and the lifting device (5) is drivingly connected to the film pasting fixture (1).

6. The film laminating device according to claim 4, wherein, The film pasting device further includes a first heating device (6) disposed below the film pasting fixture (1). The first heating device (6) includes an elastic member (61) and a heating plate (62). The elastic member (61) can elastically press the heating plate (62) onto the film pasting fixture (1).

7. The film laminating device according to claim 4, characterized in that, The film pasting device includes a reinforcing plate (9) connecting a plurality of the film pasting fixtures (1).

8. The film laminating device according to claim 7, characterized in that The film pasting device further includes a second heating device (8) disposed in the film pasting upper cavity (21).

9. The film laminating device according to claim 8, wherein, The second heating device (8) includes a plurality of first heaters (81) and two second heaters (82). The first heaters (81) are disposed opposite to the film pasting fixtures (1), and the two second heaters (82) are respectively disposed corresponding to both ends of the reinforcing plate (9).

10. The film pasting device according to claim 4, characterized in that, The first air inlet and exhaust device (3) includes a plurality of air inlet pipes (31) communicating with the film pasting upper cavity (21), and the plurality of air inlet pipes (31) are respectively disposed corresponding to a plurality of the film pasting fixtures (1) one by one.

11. The film laminating device according to claim 4, wherein, A control valve is disposed between the first air inlet and exhaust device (3) and the film pasting upper cavity (21), and the opening degree of the control valve is adjustable.

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