Air bag attaching device for attaching special-shaped display screen

Abstract

The utility model relates to the field of curved screen laminating, in particular to an air bag laminating device for laminating a special-shaped display screen, which comprises an adsorption platform, a tension device and a laminating jig, and the laminating jig is used for being matched with the adsorption platform so as to laminate a flexible film on a product cover plate; the fitting jig comprises a base and an air bag attached to the base, a pressing cavity is jointly defined between the air bag and the base, and a fluid channel is formed in the base and used for conveying or releasing fluid into the pressing cavity, so that the air bag at least has an upwards-bulged convex form and a downwards-sunken concave form; wherein before the adsorption platform is in contact with the fitting jig, the air bag is kept in a convex shape; when the adsorption platform makes contact with the attaching jig, the air bag is pressed and gradually and smoothly transitions from the protruding shape to the inwards-concave shape, and therefore the flexible film is flexibly attached to the product cover plate. The tool is simple in structure, the flexible film can be gradually attached to a product cover plate from the middle to the periphery, and bubbles and wrinkles are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of curved screen laminating, in particular to an airbag laminating device for fitting special-shaped display screens. Background Art

[0002] With the development of flexible screens, flexible displays have emerged in more and more display fields. Because it can be bent and folded, various displays have also become curved, not just flat displays. A variety of flexible products have been born, but this also poses higher requirements for screen manufacturing and lamination. Because it is a curved surface, all conventional laminations can no longer meet the requirements. Therefore, a new method is needed to complete the lamination of the flexible film and the product cover plate. So this process is a particularly important link. In the previous laminations, they were all flat laminations, and there was no relatively mature curved surface lamination solution, or directly using the flat method for curved surface lamination, and large bubbles and wrinkles would occur in the products after lamination.

[0003] The Chinese utility model patent with the patent number CN211309077U discloses an inner curved surface film laminating device. This patent uses a heater to heat the film sheet so that the shape of the film sheet is consistent with the shape of the rubber mold and gradually approaches the inner curve of the casing; after the rubber mold is pressed against the inner curved surface of the casing, it is fully adapted to the inner curved surface of the casing to extrude the gas between the film sheet and the casing, and laminate the film sheet on the inner curved surface of the casing.

[0004] Although the above patent solves some problems existing in curved surface film lamination, this patent uses a heater to deform the film, with a complex structure, and also uses the flat lamination method during the lamination process, which is prone to large bubbles and wrinkles; in view of the defects of the current technology, this patent proposes an airbag lamination device for fitting special-shaped display screens, which can well solve this problem. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide an airbag lamination device for fitting special-shaped display screens, which changes the pressure inside the pressing cavity to change the shape of the airbag, so as to evenly press and laminate the flexible film on the product cover plate, and improve the lamination quality of the product cover plate.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The utility model provides an airbag laminating device for laminating special-shaped display screens, which is used to laminate a flexible film on a product cover plate; it includes: a laminating fixture, a tensioning device for fixing the flexible film, and a suction platform for fixing the product cover plate; the laminating fixture includes: a base and an airbag attached to the base, and a pressing cavity is jointly defined between the airbag and the base. By changing the pressure inside the pressing cavity, the airbag at least has a convex shape bulging upward and a concave shape sunken downward.

[0008] Wherein, during the contact process between the suction platform and the laminating fixture, the airbag is pressed and gradually and smoothly transitions from the convex shape to the concave shape, so as to flexibly laminate the flexible film on the product cover plate; and, when the airbag converts from the convex shape to the concave shape, the internal pressure of the pressing cavity remains unchanged to ensure the smoothness of the airbag surface.

[0009] Further, during the lamination process between the suction platform and the laminating fixture, the airbag starts to sink from the middle and gradually transitions to both sides, so as to laminate the flexible film on the product cover plate gradually from the middle to the periphery.

[0010] Further, before the laminating fixture laminates the flexible film on the product cover plate, the tensioning device tightens the flexible film with a constant tension; when the laminating fixture laminates the flexible film on the product cover plate, the tensioning device gradually relaxes the flexible film.

[0011] Further, the base is provided with a fluid channel adapted to convey or release fluid into the pressing cavity. Preferably, the fluid channel includes a first channel, and the outlet of the first channel is arranged in the middle of the pressing cavity; the fluid channel further includes a second channel, and the outlets of the second channel are respectively arranged on both sides of the pressing cavity; specifically, the outlet diameter of the first channel is D1, the outlet diameter of the second channel is D2, and D1≥3D2.

[0012] Further, the laminating fixture further includes a pressing frame, the periphery of the airbag has an outer edge portion extending outward, and the pressing frame is attached to the outer edge portion to fix the airbag on the base.

[0013] Further, a negative pressure device is arranged inside the suction platform to adsorb and fix the product cover plate when the product cover plate is placed on the surface of the suction platform.

[0014] Further, it further includes a driving device for driving the suction platform to move up and down.

[0015] Due to the adoption of the above technical solutions, the utility model has the following beneficial effects:

[0016] 1. The laminating device of the present utility model utilizes the deformation of the airbag to uniformly laminate the flexible film on the product cover plate, ensuring uniform lamination of the flexible film and the product cover plate. Specifically, a pressing cavity is jointly defined between the airbag and the base. By changing the pressure inside the pressing cavity, the airbag has at least one convex shape bulging upward and one concave shape sunken downward; when the adsorption platform contacts the laminating fixture, the airbag is pressed and gradually and smoothly transitions from the convex shape to the concave shape to flexibly laminate the flexible film onto the product cover plate; moreover, when the airbag converts from the convex shape to the concave shape, the internal pressure of the pressing cavity remains unchanged to ensure the smoothness of the airbag surface, so that it always maintains a uniform extrusion force on the product cover plate, thereby avoiding the problems of bubbles and wrinkles generated between the flexible film and the product cover plate during the lamination process and improving the lamination quality of the product cover plate.

[0017] 2. In addition, the base and the airbag that make up the laminating fixture in the present utility model have simple structures, are convenient for manufacturing and processing, and are also convenient for replacement, repair and adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present utility model and do not limit the present utility model.

[0019] Figure 1 It is a schematic structural diagram of the airbag laminating device in the present utility model.

[0020] Figure 2 It is an exploded schematic diagram of the airbag laminating device in the present utility model.

[0021] Figure 3 It is a schematic cross-sectional view of the airbag laminating device in the present utility model Figure 1 .

[0022] Figure 4 It is a schematic cross-sectional view of the airbag laminating device in the present utility model Figure 2 .

[0023] Figure 5 It is a schematic structural diagram of the base in the present utility model.

[0024] Figure 6 It is a schematic structural diagram of the airbag in the present utility model.

[0025] Reference numerals: 1 - adsorption platform; 11 - limiting part; 2 - product cover plate; 3 - tensioning device; 4 - flexible film; 5 - fitting jig; 51 - base; 511 - first channel; 511a - first outlet; 511b - first inlet; 512 - second channel; 512a - second outlet; 512b - second inlet; 52 - airbag; 53 - pressing frame; 54 - pressing cavity. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Generally, the components of the embodiments of the present utility model described and illustrated in the drawings here can be arranged and designed in various different configurations. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] It should be noted that: Similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] Unless otherwise defined, the technical terms or scientific terms used in this patent document shall have the ordinary meanings understood by those of ordinary skill in the art to which the present utility model belongs. The "first", "second" and similar terms used in the description of the present utility model patent specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a", "an" or "the" do not indicate a quantity limitation, but indicate that there is at least one. The terms such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. It is only for the convenience of describing the present utility model and simplifying the description, 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 utility model.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. 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 situations.

[0030] The following will describe in detail some embodiments of the present utility model with reference to the accompanying drawings. Without conflict, the features in the following embodiments can be combined with each other.

[0031] As Figures 1 - 6 shown, the present utility model provides an airbag laminating device for laminating special-shaped display screens, which is used to laminate a flexible film 4 on a product cover plate 2; the airbag laminating device in this embodiment can be used for large-sized curved screens with standardized dimensions and shapes; it can also perform film laminating operations on various special-shaped large-sized in-vehicle screens, etc., and has a wide range of applications. Specifically, it includes: a laminating fixture 5, a tensioning device 3 for fixing the flexible film 4, and a suction platform 1 for fixing the product cover plate 2; wherein the tensioning device 3 is arranged between the laminating fixture 5 and the suction platform 1. During the laminating process, the suction platform 1 drives the product cover plate 2 to move downward and abut against the laminating fixture 5 for lamination, so as to laminate the flexible film 4 on the product cover plate 2 and complete the film laminating work, which will be specifically described below.

[0032] Before the laminating fixture 5 laminates the flexible film 4 on the product cover plate 2, the tensioning device 3 tightens the flexible film 4 with a constant tension; when the flexible film 4 contacts the airbag 52, the tensioning device 3 relaxes the flexible film 4 to make the flexible film 4 arch towards the suction platform 1; when the laminating fixture 5 makes the flexible film 4 laminate on the product cover plate 2, the tensioning device 3 synchronously approaches the airbag 52. It further includes a motor (not shown in the figure), and the motor is used to control the tensioning device 3 to tighten or relax the flexible film 4. The motor or cylinder drives the two tensioning devices 3 arranged oppositely on both sides of the base 51 to move closer to or away from each other. It should be noted that the motor can adopt a commercially available linear motor or cooperate with a servo motor and a linkage mechanism or a worm mechanism, etc., to drive the tensioning device 3 to move horizontally to tighten or relax the flexible film 4; in addition, the tensioning device 3 can adopt a commercially available clip for fixing the flexible film 4, which has a clamping or loosening function; it can loosen the flexible film 4 after the flexible film 4 is laminated on the product cover plate 2; then fix and clamp another flexible film 4; and so on, and sequentially complete the film laminating work of the product cover plate 2.

[0033] Among them, the tensioning device 3 has two implementation schemes. In the first implementation scheme, the flexible film 4 is freely placed in the positioning groove between the two tensioning devices 3, and the position of the tensioning device 3 remains unchanged during the fitting process of the flexible film 4.

[0034] In the second implementation scheme, the tensioning device 3 tightly tensions the flexible film 4 with a constant tension before the fitting jig 5 presses the flexible film 4 onto the product cover plate 2. Before the flexible film 4 is attached to the product cover plate 2, the tensioning device 3 tightens the flexible film 4. When the flexible film 4 contacts the airbag 52, the tensioning device 3 relaxes the flexible film 4 to make the flexible film 4 arch towards the adsorption platform 1. When the fitting jig 5 makes the flexible film 4 fit the product cover plate 2, the tensioning device 3 synchronously approaches the airbag 52.

[0035] The adsorption platform 1 has a limiting portion 11 to guide the product cover plate 2 to be placed on the adsorption platform 1. Specifically, as Figures 1 - 4 shown, the limiting portion 11 is an arc-shaped bottom wall adapted to the shape of the product cover plate 2. During placement, the accuracy of the installation of the product cover plate 2 and the adsorption platform 1 can be ensured. In addition, a negative pressure device (not shown in the figure) is provided on the adsorption platform 1. The negative pressure device uses commercially available products, such as a vacuum pump, etc.; the negative pressure device is used to adsorb and fix the product cover plate 2 after the product cover plate 2 is placed on the adsorption platform 1. Preferably, a plurality of negative pressure holes are distributed on the arc-shaped bottom wall of the adsorption platform 1, which can increase the adsorption force of the bottom wall of the limiting portion 11 and make the adsorption force at each place the same, so as to fix the product cover plate 2 more firmly and evenly. Of course, the product cover plate 2 and the adsorption platform 1 can also be fixed by bonding or magnetic attraction. Preferably, the adsorption platform 1 is made of a metal material.

[0036] As Figures 1 - 6 shown, the fitting jig 5 includes: a base 51 and an airbag 52 attached to the base 51. The airbag 52 and the base 51 jointly define a pressing cavity 54. By changing the pressure inside the pressing cavity 54, the airbag 52 is made to have at least one convex shape bulging upwards and one concave shape sunken downwards, so as to gradually attach the flexible film 4 to the product cover plate 2.

[0037] Among them, during the contact process between the adsorption platform 1 and the fitting jig 5, the airbag 52 is pressed and gradually transitions smoothly from the convex shape to the concave shape, so as to flexibly attach the flexible film 4 to the product cover plate 2; and, when the airbag 52 converts from the convex shape to the concave shape, the internal pressure of the pressing cavity 54 remains unchanged to ensure the smoothness of the surface of the airbag 52, avoid generating bubbles or wrinkles during the fitting process, and ensure the fitting quality.

[0038] Further, during the process of the flexible film 4 abutting against the fitting fixture 5, the concave configuration is configured to gradually deform and sink from the middle to both sides, so as to gradually attach the flexible film 4 from the middle to the periphery on the product cover plate 2; in this embodiment, by using the airbag 52 to replace the traditional silicone extrusion deformation, the pressure on the product is smaller and the product will not be damaged by pressing; at the same time, the deformation and pressure of the airbag 52 are easy to control. When the flexible film 4 contacts the airbag 52, the airbag 52 can attach the flexible film 4 to the product cover plate 2 in a way of gradually attaching from the middle to the periphery according to the acting force between the adsorption platform 1 and the fitting fixture 5.

[0039] The airbag fitting device of this embodiment further includes a pressing frame 53. The pressing frame 53 presses the airbag 52 sealed on the base 51, and the airbag 52 and the base 51 enclose a pressing cavity 54. The sealing method is not limited here. The airbag 52 has an outer edge portion extending outward. The pressing frame 53 is attached to the outer edge portion to fix the airbag 52 on the base 51; since the airbag 52 itself has the property of deformation, when the edges around it are deformed by pressure, it can be used as a seal by itself; further, a groove is formed on the base 51, and a sealing protrusion embedded in the groove is formed on the bottom surface of the outer edge portion of the airbag 52, or a sealing strip is embedded in the groove to form a sealing structure to ensure the closure inside the pressing cavity 54.

[0040] A fluid channel communicating with the pressing cavity 54 is provided on the base 51 to convey or release fluid into the pressing cavity 54. Before the fitting fixture 5 attaches the flexible film 4 to the product cover plate 2, fluid is conveyed into the pressing cavity 54 through the fluid channel connecting to an external inflator to form a convex structure with an upward arch in the middle of the airbag 52. When the driving device drives the adsorption platform 1 to move downward, the highest point in the middle of the airbag 52 starts to contact the lowest point of the product cover plate 2. When the adsorption platform 1 continues to move downward, the fluid in the pressing cavity 54 flows out through the fluid channel, so that the airbag 52 starts to sink from the middle and gradually transitions to both sides, thereby gradually attaching the flexible film 4 from the middle to the periphery on the product cover plate 2; at the same time, it also ensures that the internal pressure of the pressing cavity 54 is the same to ensure the smoothness of the surface of the airbag 52 and the fitting quality.

[0041] Among them, the fluid channel includes a first channel 511. The outlet of the first channel 511 is provided in the middle of the pressing cavity 54, that is, at least a first outlet 511a is provided in the central area of the base 51. By conveying fluid into the pressing cavity 54 through the first outlet 511a provided in the middle, the airbag 52 can quickly form a convex shape bulging upward. When the adsorption platform 1 moves downward, the lowest point of the adsorption platform 1 contacts the highest point of the airbag 52, so that the middle parts of the flexible film 4 and the product cover plate 2 come into contact and fit first. When the adsorption platform 1 continues to move downward, the two sides of the flexible film 4 gradually fit with the product cover plate 2. Due to the good softness of the airbag 52, it can closely contact the flexible film 4, thereby reducing the generation of bubbles and wrinkles and not damaging the flexible film 4, ensuring the quality of film pasting.

[0042] The fluid channel further includes a second channel 512, that is, second outlets 512a are provided in other areas outside the middle area of the pressing cavity 54; preferably, the outlets of the second channel 512 are respectively provided on both sides of the pressing cavity 54, so that fluid can be quickly conveyed into the pressing cavity 54 to enable the airbag 52 to quickly form a convex shape; further, the fluid flow rate flowing out of the first outlet 511a is greater than the fluid flow rate flowing out of the second outlet 512a. With the above design, fluid can be conveyed into the pressing cavity 54 in a hierarchical manner, so that the upper surface of the airbag 52 forms an arched structure with a convex middle part. When the flexible film 4 is pasted on the product cover plate 2, the flexible film 4 can be better pasted on the product cover plate 2 in a way of gradually fitting from the middle to the periphery, ensuring the fitting quality of the flexible film 4 and the product cover plate 2.

[0043] Such as Figure 3 、 Figure 4 、 Figure 5As shown, further, there are 4 first outlets 511a arranged symmetrically in the up, down, left, and right directions in the central area; the second outlets 512a are symmetrically distributed on the left and right sides of the first outlets 511a; and there are 4 second outlets 512a on both sides of the first outlets 511a, and the 4 second outlets 512a are arranged in a row at equal intervals. In other embodiments, there can be 6, 8 or more second outlets 512a on both sides of the first outlets 511a, and the control of the fluid flow rate can be adjusted by the channel diameter or the flow rate valve, etc., which is not limited. In this embodiment, the fluid flow rate is adjusted by different diameters, and the first outlets 511a are larger than the second outlets 512a. Preferably, the diameter of the first outlets 511a is D1 and the diameter of the second outlets 512a is D2, and the ratio of D1 to D2 is as follows: D1≥3D2; preferably, D1 = 3.2 - 3.5D2. Within this ratio range, whether it is the deformation of the airbag 52 or the process of applying pressure to the flexible film 4 during later inflation, it can ensure uniform diffusion from the center to the periphery, and it does not affect the continuous and uniform application of pressure to the flexible film 4 from the middle to the periphery during the process of quickly filling the pressing cavity 54, effectively reducing the generation of bubbles and wrinkles.

[0044] Further, inlets are provided on the side surface and / or bottom surface of the base 51 for introducing fluid into the fluid channel. Here, the inlet corresponding to the first outlet 511a is the first inlet 511b, which is connected through the first fluid channel, and the first inlet 511b is provided on the side surface of the base 51; while the inlet corresponding to the second outlet 512a is the second inlet 512b, which is connected through the second fluid channel, and the second inlet 512b is provided on the bottom surface of the base 51. Separating the introduction of the fluid at the first outlets 511a and the second outlets 512a into different areas has two purposes. The first is to quickly fill the pressing cavity 54 with fluid, and the second is to facilitate adjustment when applying pressure to the flexible film 4.

[0045] Preferably, in this embodiment, the airbag 52 is made of a silicon capsule. In this embodiment, the type of the fluid is gas.

[0046] In this embodiment, by adjusting the flow rate of the fluid flowing out of the outlets and arranging the positions of the outlets, during the process of the bonding fixture 5 approaching the adsorption platform 1, fluid is continuously introduced into the pressing cavity 54, so that the volume of the pressing cavity 54 gradually increases, and the airbag 52 continuously and uniformly squeezes the flexible film 4 from the center to the periphery, and then gradually fits with the product cover plate 2.

[0047] The working process of this embodiment is as follows: continuously introduce gas into the pressing chamber 54, wherein, since the diameter of the first outlet 511a is greater than the diameter of the second outlet 512a, and the first outlet 511a is located in the central area of the base 51, the middle position of the airbag 52 will first bulge upward to connect with the flexible film 4, at which time the flexible film 4 is tightened by the tensioning device 3, and driven by the motor to reach a suitable position, and the product cover plate 2 moves close to the flexible film 4 under the drive of the adsorption platform 1; continue to ventilate the pressing chamber 54, since the amount of gas introduced into different areas of the pressing chamber 54 at the same time is different, the pressure applied by the airbag 52 to the flexible film 4 can be adjusted, and the airbag 52 undergoes a concave deformation after being pressurized, and the flexible film 4 gradually fits with the product cover plate 2 from the center to the surroundings. After fitting, the adsorption platform 1 moves away from the airbag 52 with the product cover plate 2 with the flexible film 4 attached, and the airbag 52 returns to the shape before the pressing.

[0048] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 ; The pressing frame 53 described in this embodiment forms a barrier at the circumferential edge of the airbag 52 to keep the deformation direction of the pressing cavity 54 consistent, and the airbag 52 is squeezed when the volume of the pressing cavity 54 increases beyond the height of the barrier of the pressing frame 53. In this embodiment, the thickness of the pressing frame 53 is equivalent to the height of the airbag 52 that has not been deformed. When fluid is filled to deform the airbag 52, there is a deformation barrier around the airbag 52, which effectively ensures that the main deformation direction of the flexible body is to deform in the direction in which it applies pressure to the flexible film 4; and when the airbag 52 applies pressure to the flexible film 4, the pressing frame 53 also has a limit on the circumferential deformation of the airbag 52, ensuring that it is evenly squeezed from the middle of the flexible film 4 to the surroundings, and then gradually fits with the product cover plate 2.

[0049] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 In this embodiment, the circumferential edge of the base 51 extends upward and protrudes from the surface of the base 51 to form a positioning boss for the installation and positioning of the airbag 52. In this way, during the assembly process, the airbag 52 is placed on the base 51, and the positioning can be achieved quickly during assembly. The pressing frame 53 can be directly compacted and sealed according to the installation and positioning of the airbag 52.

[0050] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. An airbag laminating device for laminating special-shaped display screens, which is used to laminate a flexible film on a product cover plate; characterized in that, Including: A fitting jig, a tensioning device for fixing a flexible film, and a suction platform for fixing a product cover plate; The fitting jig includes: A base and an airbag attached to the base. A pressing cavity is jointly defined between the airbag and the base. By changing the pressure inside the pressing cavity, the airbag has at least a convex shape bulging upward and a concave shape sunken downward; Wherein, during the contact between the suction platform and the fitting jig, the airbag is pressed and gradually transitions smoothly from the convex shape to the concave shape to flexibly attach the flexible film to the product cover plate; and When the airbag transitions from the convex shape to the concave shape, the internal pressure of the pressing cavity remains unchanged to ensure the smoothness of the surface of the airbag.

2. The airbag fitting device according to claim 1, wherein During the fitting process of the suction platform and the fitting jig, the airbag starts to concave from the middle and gradually transitions to both sides, thereby attaching the flexible film to the product cover plate gradually from the middle to the periphery.

3. The airbag fitting device according to claim 1, characterized in that, Before the fitting jig attaches the flexible film to the product cover plate, the tensioning device tightens the flexible film with a constant tension; when the fitting jig attaches the flexible film to the product cover plate, the tensioning device gradually relaxes the flexible film.

4. The airbag fitting device according to claim 1, characterized in that, The base is provided with a fluid channel adapted to convey or release fluid into the pressing cavity.

5. The airbag fitting device according to claim 4, characterized in that, The fluid channel includes a first channel, and the outlet of the first channel is arranged in the middle of the pressing cavity.

6. The airbag fitting device according to claim 5, characterized in that, The fluid channel further includes a second channel, and the outlets of the second channel are respectively arranged on both sides of the pressing cavity.

7. The airbag fitting device according to claim 6, characterized in that, The outlet diameter of the first channel is D1, the outlet diameter of the second channel is D2, and D1≥3D2.

8. The airbag fitting device according to claim 1, characterized in that, It further includes a pressing frame. The periphery of the airbag has an outer edge portion extending outward, and the pressing frame is attached to the outer edge portion to fix the airbag on the base.

9. The airbag fitting device according to claim 1, characterized in that, A negative pressure device is provided inside the suction platform to adsorb and fix the product cover plate when the product cover plate is placed on the surface of the suction platform.

10. The airbag fitting device according to claim 1, characterized in that, It further includes a driving device for driving the suction platform to move up and down.

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