A film applying device

Abstract

The present invention relates to the technical field of mechanical equipment and discloses a film pasting device. The film pasting device includes a base, a cover body and a carrying fixture. A first chamber is arranged inside the base, and an air extraction hole communicated with the first chamber is arranged on the side wall of the base; a second chamber is arranged inside the cover body, and an air vent hole communicated with the second chamber is arranged on the side wall of the cover body. The cover body can be covered on the base, and the first chamber and the second chamber are closed to form an accommodation chamber; the carrying fixture is arranged in the first chamber and above the air extraction hole. The carrying fixture is used for carrying the workpiece to be pasted with a film, and an air passing hole communicated with the first chamber is arranged on the carrying fixture. The film to be pasted is clamped between the base and the cover body and can be pasted on the workpiece to be pasted under the action of the pressure difference between the first chamber and the second chamber. The film pasting device can realize the automatic film pasting operation of VR lenses, effectively avoid contaminating the film and the lens during the film pasting process, and has high pasting efficiency and good pasting effect.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and particularly to a film pasting device. Background Art

[0002] Virtual Reality (VR) technology is a technology that comprehensively utilizes computer graphics systems and various reality and control interface devices to provide an immersive feeling in a three-dimensional environment generated on a computer and allowing interaction.

[0003] A virtual reality head-mounted display device, abbreviated as VR glasses, is a product that combines simulation technology with computer graphics human-computer interface technology, multimedia technology, sensing technology, network technology, and other technologies. It is a brand-new human-computer interaction means created with the aid of a computer and the latest sensor technology. VR glasses are a cross-era product that allows every enthusiast to experience with surprise and joy. The principle of VR glasses is similar to that of the human eye. The two lenses are equivalent to the two eyes of a person, but they are far less intelligent than the human eye. VR glasses usually split the content into two halves and achieve superimposed imaging through the lenses. The center of the human eye pupil, the center of the lens, and the center of the lens after splitting the screen should be controlled on a straight line. Therefore, it is necessary to adjust the "pupil distance" of the lens to coincide with the human eye pupil distance, and then use software to adjust the center of the screen to ensure that the three points are on a straight line, so as to obtain the best visual effect.

[0004] During the production process of VR glasses, it is necessary to paste a film on the glasses lenses. In the prior art, manual film pasting is usually used for pasting VR lenses. Since the requirement for cleanliness is very high during film pasting, in the traditional film pasting technology, extra dust will be introduced between the film and the lens during the manual film pasting process, affecting the quality of VR glasses. In addition, manual film pasting also affects the film pasting efficiency. After long-term work, the operator is prone to fatigue, affecting the film pasting quality.

[0005] Therefore, there is an urgent need to propose a film pasting device to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a film pasting device that can realize the automatic film pasting operation of VR lenses, effectively avoid the phenomenon of contamination of the film and the lens during the film pasting process, and has a relatively high fitting efficiency and a good fitting effect.

[0007] With the above concept, the technical solution adopted by the present invention is as follows:

[0008] A film pasting device includes:

[0009] A base, which is provided with a first chamber inside, and an air extraction hole communicating with the first chamber is provided on the side wall of the base to perform a vacuum pumping process on the first chamber;

[0010] A cover body is provided with a second chamber therein. An air vent communicating with the second chamber is provided on the side wall of the cover body to introduce positive-pressure gas into the second chamber. The cover body can be covered on the base, and the first chamber and the second chamber are closed to form an accommodation chamber.

[0011] A carrying fixture is arranged in the first chamber and above the air extraction hole. The carrying fixture is used for carrying the to-be-film-attached member. An air passing hole communicating with the first chamber is provided on the carrying fixture. The to-be-attached film is clamped between the base and the cover body and can be attached to the to-be-film-attached member under the action of the vacuum in the first chamber and the positive-pressure gas in the second chamber.

[0012] As a preferred solution of the film attaching device provided by the present invention, a carrying groove is provided on the carrying fixture, and the groove wall of the carrying groove can fit with the outer wall of the to-be-film-attached member.

[0013] As a preferred solution of the film attaching device provided by the present invention, the number of the carrying fixtures is multiple. The groove walls of the carrying grooves provided on different carrying fixtures have different curvatures, and multiple carrying fixtures are detachably connected to the first chamber selectively.

[0014] As a preferred solution of the film attaching device provided by the present invention, the carrying fixture is arranged in the first chamber with adjustable height.

[0015] As a preferred solution of the film attaching device provided by the present invention, at least one notch is provided at the edge of the carrying fixture, and the notch forms the air passing hole.

[0016] As a preferred solution of the film attaching device provided by the present invention, a first heating element is embedded in the base; and / or a second heating element is embedded in the cover body.

[0017] As a preferred solution of the film attaching device provided by the present invention, the film attaching device further includes a pre-pressing assembly. The pre-pressing assembly includes a pre-pressing head that is liftably arranged in the second chamber. The pre-pressing head is configured to press the central position of the to-be-attached film on the to-be-film-attached member.

[0018] As a preferred solution of the film attaching device provided by the present invention, a first rubber coating layer is provided on one side of the base where the first chamber is arranged; and / or

[0019] An annular protrusion is provided on the cover body, and the annular protrusion is arranged around the second chamber.

[0020] As a preferred embodiment of the film pasting device provided by the present invention, the volume of the second chamber is smaller than that of the first chamber.

[0021] As a preferred embodiment of the film pasting device provided by the present invention, a pressure sensor is further provided on the base, and the pressure sensor is used to detect the fitting pressure between the cover and the base; and / or

[0022] A vacuum gauge is further provided on the base, and the vacuum gauge is used to detect the vacuum degree in the first chamber.

[0023] The beneficial effects of the present invention are as follows:

[0024] The film pasting device proposed by the present invention includes a base, a cover and a carrying fixture. A first chamber is provided in the base, and an air extraction hole communicating with the first chamber is provided on the side wall of the base to perform vacuum pumping on the first chamber; a second chamber is provided in the cover, and an air vent hole communicating with the second chamber is provided on the side wall of the cover to introduce positive pressure gas into the second chamber. The cover can be covered on the base, and the first chamber and the second chamber are closed to form a containing chamber; the carrying fixture is arranged in the first chamber and above the air extraction hole, and the carrying fixture is used to carry the film to be pasted. An air passing hole communicating with the first chamber is provided on the carrying fixture. The film to be attached is clamped between the base and the cover, and can be attached to the film to be pasted under the action of the vacuum in the first chamber and the positive pressure gas in the second chamber. By performing vacuum pumping in the first chamber of the base and introducing positive pressure gas into the second chamber of the cover, the film to be pasted can be smoothly attached to the film to be pasted without setting additional smoothing parts, simplifying the structure of the film pasting device, reducing the manufacturing cost, and facilitating operation; in addition, the film pasting device can realize automatic film pasting operation on the film to be pasted, effectively avoiding the phenomenon of contaminating the film and the lens during the film pasting process, with high bonding efficiency and good bonding effect, without the need for manual operation, and can also reduce the labor cost. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the film pasting device provided by an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of the base of the film pasting device provided by an embodiment of the present invention;

[0027] Figure 3 is a schematic structural diagram of the cover of the film pasting device provided by an embodiment of the present invention.

[0028] In the figure:

[0029] 1 - base; 11 - first chamber; 12 - air extraction hole; 13 - vacuum gauge; 14 - pressure sensor;

[0030] 2 - Cover; 21 - Second chamber; 22 - Vent hole; 23 - Annular protrusion;

[0031] 3 - Carrying fixture; 31 - Carrying groove; 32 - Notch;

[0032] 4 - First heating element;

[0033] 5 - Second heating element;

[0034] 6 - Pre - pressing assembly; 61 - Pre - pressing head; 62 - Pre - pressing driving member. Detailed implementation manner

[0035] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only parts related to the present invention rather than all structures are shown in the drawings.

[0036] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0038] In the description of this embodiment, the orientation or positional relationship such as "above", "below", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0039] Figure 1 The structural schematic diagram of the film pasting device provided by the embodiment of the present invention is shown. Figure 2 The structural schematic diagram of the base 1 of the film pasting device provided by the embodiment of the present invention is shown. Figure 3 The structural schematic diagram of the cover body 2 of the film pasting device provided by the embodiment of the present invention is shown. As Figures 1 - 3 shown, this embodiment provides a film pasting device, which includes a base 1, a cover body 2 and a carrying fixture 3. Among them, a first chamber 11 is arranged in the base 1, and an air extraction hole 12 communicating with the first chamber 11 is arranged on the side wall of the base 1 to perform a vacuum pumping process on the first chamber 11; a second chamber 21 is arranged in the cover body 2, and an air vent hole 22 communicating with the second chamber 21 is arranged on the side wall of the cover body 2 to introduce positive pressure gas into the second chamber 21. The cover body 2 can be covered on the base 1, and the first chamber 11 and the second chamber 21 are closed to form an accommodation chamber; the carrying fixture 3 is arranged in the first chamber 11 and above the air extraction hole 12. The carrying fixture 3 is used to carry the workpiece to be pasted with a film. An air passing hole communicating with the first chamber 11 is arranged on the carrying fixture 3. The film to be pasted is clamped between the base 1 and the cover body 2, and can be pasted on the workpiece to be pasted under the action of the vacuum in the first chamber 11 and the positive pressure gas in the second chamber 21.

[0040] It should be noted that in this embodiment, the workpiece to be pasted with a film mainly refers to the lens of a VR glasses. Of course, in other embodiments, the workpiece to be pasted with a film can also be other workpieces that need to be pasted with a film on the surface.

[0041] For the film pasting device provided by this embodiment, by performing a vacuum pumping process in the first chamber 11 of the base 1 and introducing positive pressure gas into the second chamber 21 of the cover body 2, the workpiece to be pasted with a film can be flatly pasted on the workpiece to be pasted with a film without setting an additional flattening member, simplifying the structure of the film pasting device, reducing the manufacturing cost, and being convenient to operate; in addition, the film pasting device can realize the automatic film pasting operation on the workpiece to be pasted with a film, effectively avoiding the phenomenon of contaminating the film and the lens during the film pasting process, with a relatively high fitting efficiency and a good fitting effect, without the need for manual operation, and can also reduce the labor cost.

[0042] Optionally, in this embodiment, the air extraction hole 12 is communicated with a vacuum pump to perform a vacuum pumping process on the first chamber 11. The air vent hole 22 is communicated with a positive pressure gas storage tank to introduce positive pressure gas into the second chamber 21. Optionally, a pressure increasing valve, an electro-pneumatic proportional valve and a ball valve are arranged between the positive pressure gas storage tank and the air vent hole 22. The electro-pneumatic proportional valve can provide a stable output pressure, and the ball valve can adjust the size of the intake air volume.

[0043] The process of attaching the film to be attached to the part to be filmed is as follows: First, open the cover body 2 to expose the carrying fixture 3, then place the part to be filmed on the carrying fixture 3, and lay the film to be attached flat on the part to be filmed; Next, cover the cover body 2 on the base 1, and clamp the edge of the film to be attached between the base 1 and the cover body 2, so that the accommodation chamber is divided into a positive pressure space and a vacuum space with the film to be attached as the interface. Among them, a positive pressure space is formed between the film to be attached and the second chamber 21, and a vacuum space is formed between the film to be attached and the first chamber 11; Then, evacuate the vacuum space, and introduce positive pressure gas into the positive pressure space. Under the action of the pressure difference formed between the vacuum space and the positive pressure space, the film to be attached is extended and attached to the part to be filmed. Among them, the pressure of the positive pressure gas introduced into the positive pressure space is 0-2.0 Mpa.

[0044] Optionally, a vacuum gauge 13 is also provided on the base 1. The vacuum gauge 13 is used to detect the vacuum degree in the first chamber 11, so that the vacuum degree of the vacuum space is within a suitable range, avoiding the film to be attached being torn due to excessive vacuum degree, and at the same time avoiding the pressure difference formed between the vacuum space and the positive pressure space being too small due to too small vacuum degree, which affects the bonding effect.

[0045] Furthermore, the film attaching device further includes a lifting drive assembly (not shown in the figure). The output end of the lifting drive assembly is connected to the cover body 2 to drive the cover body 2 to lift, so as to realize the automatic closing and opening between the cover body 2 and the base 1. Among them, the lifting drive assembly can be a lifting motor or a lifting cylinder.

[0046] Optionally, a pressure sensor 14 is also provided on the base 1. The pressure sensor 14 is used to detect the fitting pressure between the cover body 2 and the base 1, so that the fitting pressure between the cover body 2 and the base 1 is within a suitable range, preventing the film to be attached from being crushed due to excessive fitting pressure, or preventing the accommodation chamber from leaking due to too small fitting pressure, which affects the fitting effect.

[0047] Furthermore, a circular protrusion 23 is also provided on the cover body 2. The circular protrusion 23 is arranged around the second chamber 21. After the cover body 2 and the base 1 are closed, the circular protrusion 23 can fix the film to be attached and can play a role in sealing the accommodation chamber. Optionally, the number of circular protrusions 23 is multiple, and the multiple circular protrusions 23 are arranged at intervals along the direction from the center to the edge of the second chamber 21.

[0048] Furthermore, a first rubber-coated layer is provided on one side of the base 1 where the first chamber 11 is provided, which plays a fixing role and also a sealing role after the cover body 2 and the base 1 are closed.

[0049] Optionally, at least one notch 32 is provided at the edge of the carrier fixture 3, and the notch 32 forms a vent hole communicating with the first chamber 11, so as to form the above-mentioned vacuum space between the bottom of the diaphragm to be attached and the first chamber 11. This design has a simple structure, is convenient for processing, and can improve processing efficiency.

[0050] Furthermore, a first heating element 4 is embedded in the base 1; and / or a second heating element 5 is embedded in the cover 2. By providing the first heating element 4 and the second heating element 5, the diaphragm to be attached can be heated when the workpiece to be laminated and the diaphragm to be attached are laminated, so as to increase the ductility of the diaphragm to be attached, so that the diaphragm to be attached can be smoothly attached to the workpiece to be laminated. In this embodiment, both the first heating element 4 and the second heating element 5 are electric heating rods, which are convenient to arrange, have high heating efficiency, and low manufacturing cost.

[0051] Optionally, the number of the first heating elements 4 is multiple, and the multiple first heating elements 4 are spaced and embedded in the base 1 to improve the heating efficiency of the first heating element 4 for the base 1 and ensure the uniformity of heating of each position of the base 1. Similarly, the number of the second heating elements 5 is multiple, and the multiple second heating elements 5 are spaced and embedded in the cover 2 to improve the heating efficiency of the second heating element 5 for the cover 2 and ensure the uniformity of heating of each position of the cover 2. The first heating element 4 and the second heating element 5 cooperate with each other to uniformly heat each position on the diaphragm to be attached.

[0052] Since the VR lens is usually in a curved shape, in order to stably carry the VR lens, in this embodiment, a carrying groove 31 is provided on the carrier fixture 3, and the groove wall of the carrying groove 31 can fit with the outer wall of the VR lens. On the one hand, it can stably carry the VR lens with a curved shape. On the other hand, it can also play a role in limiting and positioning the VR lens to ensure the fitting effect between the VR lens and the diaphragm to be attached.

[0053] It can be understood that the sizes of VR lenses of different specifications are different. In order to improve the versatility of the laminating device, the number of the carrier fixtures 3 is multiple, and the groove walls of the carrying grooves 31 provided on different carrier fixtures 3 have different curvatures. Multiple carrier fixtures 3 are detachably connected to the first chamber 11 one by one. When laminating VR lenses of different specifications, the corresponding carrier fixture 3 can be connected to the first chamber 11 so that the carrying groove 31 on the carrier fixture 3 is adapted to the VR lens to be laminated, thereby ensuring the fitting effect between the VR lens and the diaphragm to be attached; in addition, this design can also make the diaphragm to be attached smoothly transition at the edge of the VR lens, avoid wrinkles or bubbles during attachment, and ensure the fitting quality.

[0054] Optionally, the carrier fixture 3 is connected to the base 1 through a connecting member, with a stable connection and convenient disassembly and assembly. Among them, the connecting member can be a connecting bolt or a connecting screw.

[0055] Of course, in other embodiments, the carrier fixture 3 can also be snap-fitted into the first chamber 11. Specifically, an annular groove is provided on the chamber wall of the first chamber 11, and the edge of the carrier fixture 3 is snap-fitted into the annular groove, simultaneously realizing a stable connection between the carrier fixture 3 and the base 1.

[0056] Furthermore, the carrier fixture 3 is height-adjustably arranged in the first chamber 11 to adapt to the fitting height requirements between VR lenses of different specifications and the film to be attached. Specifically, a plurality of first connection holes are spaced apart in the vertical direction on the base 1, and a second connection hole is provided on the carrier fixture 3. The connecting member can pass through any one of the first connection holes and be screwed into the second connection hole to realize the adjustment of the height of the carrier fixture 3 in the first chamber 11.

[0057] In other embodiments, it can also be that a plurality of annular grooves are spaced apart in the vertical direction on the chamber wall of the first chamber 11, and the carrier fixture 3 is selectively snap-fitted into any one of the annular grooves to realize the adjustment of the height of the carrier fixture 3 in the first chamber 11.

[0058] Furthermore, the film laminating device further includes a pre-pressing assembly 6. The pre-pressing assembly 6 includes a pre-pressing head 61 that is liftably arranged in the second chamber 21. The pre-pressing head 61 is configured to press the central position of the film to be attached onto the film to be laminated. After closing the cover 2 and the base 1, first start the first heating element 4 and the second heating element 5 to perform a heating operation on the film to be attached for a preset time. Then, make the pre-pressing head 61 move downward, and after pressing the central position of the heated film to be attached onto the film to be laminated, evacuate the first chamber 11 and introduce positive pressure gas into the second chamber 21. This operation step can eliminate the bubbles at the starting point of the lamination, thereby ensuring the lamination effect between the film to be laminated and the film to be attached.

[0059] Furthermore, the pre-pressing assembly 6 further includes a pre-pressing driving member 62. The pre-pressing driving member 62 is arranged on the cover 2, and the output end of the pre-pressing driving member 62 is connected to the pre-pressing head 61 to drive the pre-pressing head 61 to lift in the vertical direction. In this embodiment, the pre-pressing driving member 62 is a slide table cylinder.

[0060] Optionally, a second rubber coating layer is provided at the end of the pre-pressing head 61 to prevent damage to the film to be attached when the pre-pressing head 61 presses it.

[0061] Furthermore, as Figure 2 and Figure 3As shown, the volume of the second chamber 21 is smaller than that of the first chamber 11. This design is beneficial to ensuring the gas pressure in the positive pressure space, reducing the consumption of positive pressure gas, and lowering the film application cost.

[0062] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A film laminating device, characterized in that, Comprising: A base (1) having a first chamber (11) therein, and an air extraction hole (12) communicating with the first chamber (11) is provided on the side wall of the base (1) to evacuate the first chamber (11). A cover body (2) having a second chamber (21) therein, and an air vent hole (22) communicating with the second chamber (21) is provided on the side wall of the cover body (2) to introduce positive pressure gas into the second chamber (21). The cover body (2) can be covered on the base (1), and the first chamber (11) and the second chamber (21) are closed to form an accommodation chamber. A carrier fixture (3) is disposed in the first chamber (11) and above the air extraction hole (12). The carrier fixture (3) is used to carry the component to be pasted with a film. An air passing hole communicating with the first chamber (11) is provided on the carrier fixture (3). The film to be attached is clamped between the base (1) and the cover body (2), and can be attached to the component to be pasted with a film under the action of the vacuum in the first chamber (11) and the positive pressure gas in the second chamber (21). A pre-pressing assembly (6), the pre-pressing assembly (6) includes a pre-pressing head (61) that is liftably disposed in the second chamber (21), and the pre-pressing head (61) is configured to press the central position of the film to be attached onto the component to be pasted with a film. A pressure sensor (14) is further provided on the base (1), and the pressure sensor (14) is used to detect the fitting pressure between the cover body (2) and the base (1). A vacuum gauge (13) is further provided on the base (1), and the vacuum gauge (13) is used to detect the vacuum degree in the first chamber (11).

2. The film laminating device according to claim 1, wherein A carrying groove (31) is provided on the carrier fixture (3), and the groove wall of the carrying groove (31) can be attached to the outer wall of the component to be pasted with a film.

3. The film laminating device according to claim 2, wherein, The number of the carrier fixtures (3) is multiple, and the groove walls of the carrying grooves (31) provided on different carrier fixtures (3) have different curvatures. Multiple carrier fixtures (3) are selectively and detachably connected to the first chamber (11).

4. The film laminating device according to claim 1, wherein The carrier fixture (3) is disposed in the first chamber (11) with adjustable height.

5. The film laminating device according to claim 1, wherein At least one notch (32) is provided at the edge of the carrier fixture (3), and the notch (32) forms the air passing hole.

6. The film sticking device according to claim 1, characterized in that, A first heating element (4) is embedded in the base (1); and / or a second heating element (5) is embedded in the cover body (2).

7. The film sticking device according to claim 1, characterized in that, A first rubber coating layer is provided on the side of the base (1) where the first chamber (11) is provided; and / or An annular protrusion (23) is provided on the cover body (2), and the annular protrusion (23) is provided around the second chamber (21).

8. The film laminating device according to claim 1, characterized in that, The volume of the second chamber (21) is smaller than the volume of the first chamber (11).

Images